Updated version and assets for release v22.06

Included test to cover usage and paths.
Closes #894

.env.example.complete

@@ -42,7 +42,7 @@ APP_TIMEZONE=UTC
 # overrides can be made. Defaults to disabled.
 APP_THEME=false
 
-# Trusted Proxies
+# Trusted proxies
 # Used to indicate trust of systems that proxy to the application so
 # certain header values (Such as "X-Forwarded-For") can be used from the
 # incoming proxy request to provide origin detail.
@@ -58,6 +58,13 @@ DB_DATABASE=database_database
 DB_USERNAME=database_username
 DB_PASSWORD=database_user_password
 
+# MySQL specific connection options
+# Path to Certificate Authority (CA) certificate file for your MySQL instance.
+# When this option is used host name identity verification will be performed
+# which checks the hostname, used by the client, against names within the
+# certificate itself (Common Name or Subject Alternative Name).
+MYSQL_ATTR_SSL_CA="/path/to/ca.pem"
+
 # Mail system to use
 # Can be 'smtp' or 'sendmail'
 MAIL_DRIVER=smtp
@@ -100,8 +107,7 @@ MEMCACHED_SERVERS=127.0.0.1:11211:100
 REDIS_SERVERS=127.0.0.1:6379:0
 
 # Queue driver to use
-# Queue not really currently used but may be configurable in the future.
-# Would advise not to change this for now.
+# Can be 'sync', 'database' or 'redis'
 QUEUE_CONNECTION=sync
 
 # Storage system to use
@@ -134,9 +140,13 @@ STORAGE_S3_ENDPOINT=https://my-custom-s3-compatible.service.com:8001
 STORAGE_URL=false
 
 # Authentication method to use
-# Can be 'standard', 'ldap' or 'saml2'
+# Can be 'standard', 'ldap', 'saml2' or 'oidc'
 AUTH_METHOD=standard
 
+# Automatically initiate login via external auth system if it's the only auth method.
+# Works with saml2 or oidc auth methods.
+AUTH_AUTO_INITIATE=false
+
 # Social authentication configuration
 # All disabled by default.
 # Refer to https://www.bookstackapp.com/docs/admin/third-party-auth/
@@ -217,6 +227,7 @@ LDAP_DUMP_USER_DETAILS=false
 LDAP_USER_TO_GROUPS=false
 LDAP_GROUP_ATTRIBUTE="memberOf"
 LDAP_REMOVE_FROM_GROUPS=false
+LDAP_DUMP_USER_GROUPS=false
 
 # SAML authentication configuration
 # Refer to https://www.bookstackapp.com/docs/admin/saml2-auth/
@@ -242,6 +253,7 @@ SAML2_GROUP_ATTRIBUTE=group
 SAML2_REMOVE_FROM_GROUPS=false
 
 # OpenID Connect authentication configuration
+# Refer to https://www.bookstackapp.com/docs/admin/oidc-auth/
 OIDC_NAME=SSO
 OIDC_DISPLAY_NAME_CLAIMS=name
 OIDC_CLIENT_ID=null
@@ -266,7 +278,7 @@ AVATAR_URL=
 # Enable diagrams.net integration
 # Can simply be true/false to enable/disable the integration.
 # Alternatively, It can be URL to the diagrams.net instance you want to use.
-# For URLs, The following URL parameters should be included: embed=1&proto=json&spin=1
+# For URLs, The following URL parameters should be included: embed=1&proto=json&spin=1&configure=1
 DRAWIO=true
 
 # Default item listing view
@@ -297,6 +309,11 @@ RECYCLE_BIN_LIFETIME=30
 # Maximum file size, in megabytes, that can be uploaded to the system.
 FILE_UPLOAD_SIZE_LIMIT=50
 
+# Export Page Size
+# Primarily used to determine page size of PDF exports.
+# Can be 'a4' or 'letter'.
+EXPORT_PAGE_SIZE=a4
+
 # Allow <script> tags in page content
 # Note, if set to 'true' the page editor may still escape scripts.
 ALLOW_CONTENT_SCRIPTS=false
@@ -319,6 +336,13 @@ ALLOW_UNTRUSTED_SERVER_FETCHING=false
 # Setting this option will also auto-adjust cookies to be SameSite=None.
 ALLOWED_IFRAME_HOSTS=null
 
+# A list of sources/hostnames that can be loaded within iframes within BookStack.
+# Space separated if multiple. BookStack host domain is auto-inferred.
+# Can be set to a lone "*" to allow all sources for iframe content (Not advised).
+# Defaults to a set of common services.
+# Current host and source for the "DRAWIO" setting will be auto-appended to the sources configured.
+ALLOWED_IFRAME_SOURCES="https://*.draw.io https://*.youtube.com https://*.youtube-nocookie.com https://*.vimeo.com"
+
 # The default and maximum item-counts for listing API requests.
 API_DEFAULT_ITEM_COUNT=100
 API_MAX_ITEM_COUNT=500

.github/FUNDING.yml

@@ -1,3 +1,4 @@
 # These are supported funding model platforms
 
 github: [ssddanbrown]
+ko_fi: ssddanbrown

.github/ISSUE_TEMPLATE/api_request.yml

@@ -1,6 +1,5 @@
 name: New API Endpoint or API Ability
 description: Request a new endpoint or API feature be added
-title: "[API Request]: "
 labels: [":nut_and_bolt: API Request"]
 body:
   - type: textarea

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,6 +1,5 @@
 name: Bug Report
 description: Create a report to help us improve or fix things
-title: "[Bug Report]: "
 labels: [":bug: Bug"]
 body:
   - type: textarea
@@ -36,6 +35,15 @@ body:
       description: Provide any additional context and screenshots here to help us solve this issue
     validations:
       required: false
+  - type: input
+    id: browserdetails
+    attributes:
+      label: Browser Details
+      description: |
+        If this is an issue that occurs when using the BookStack interface, please provide details of the browser used which presents the reported issue.
+      placeholder: (eg. Firefox 97 (64-bit) on Windows 11)
+    validations:
+      required: false
   - type: input
     id: bsversion
     attributes:

.github/ISSUE_TEMPLATE/config.yml

@@ -1,9 +1,13 @@
 blank_issues_enabled: false
 contact_links:
-  - name: Discord chat support
+  - name: Discord Chat Support
     url: https://discord.gg/ztkBqR2
-    about: Realtime support / chat with the community and the team.
+    about: Realtime support & chat with the BookStack community and the team.
 
   - name: Debugging & Common Issues
     url: https://www.bookstackapp.com/docs/admin/debugging/
-    about: Find details on how to debug issues and view common issues with thier resolutions.
+    about: Find details on how to debug issues and view common issues with their resolutions.
+
+  - name: Official Support Plans
+    url: https://www.bookstackapp.com/support/
+    about: View our official support plans that offer assured support for business.

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -1,6 +1,5 @@
 name: Feature Request
-description: Request a new language to be added to CrowdIn for you to translate
-title: "[Feature Request]: "
+description: Request a new feature or idea to be added to BookStack
 labels: [":hammer: Feature Request"]
 body:
   - type: textarea
@@ -13,8 +12,41 @@ body:
   - type: textarea
     id: benefits
     attributes:
-      label: Describe the benefits this feature would bring to BookStack users
-      description: Explain the measurable benefits this feature would achieve for existing BookStack users
+      label: Describe the benefits this would bring to existing BookStack users
+      description: |
+        Explain the measurable benefits this feature would achieve for existing BookStack users.
+        These benefits should details outcomes in terms of what this request solves/achieves, and should not be specific to implementation.
+        This helps us understand the core desired goal so that a variety of potential implementations could be explored.
+        This field is important. Lack if input here may lead to early issue closure.
+    validations:
+      required: true
+  - type: textarea
+    id: already_achieved
+    attributes:
+      label: Can the goal of this request already be achieved via other means?
+      description: |
+        Yes/No. If yes, please describe how the requested approach fits in with the existing method.
+    validations:
+      required: true
+  - type: checkboxes
+    id: confirm-search
+    attributes:
+      label: Have you searched for an existing open/closed issue?
+      description: |
+        To help us keep these issues under control, please ensure you have first [searched our issue list](https://github.com/BookStackApp/BookStack/issues?q=is%3Aissue) for any existing issues that cover the fundemental benefit/goal of your request.
+      options:
+        - label: I have searched for existing issues and none cover my fundemental request
+          required: true
+  - type: dropdown
+    id: existing_usage
+    attributes:
+      label: How long have you been using BookStack?
+      options:
+        - Not using yet, just scoping
+        - 0 to 6 months
+        - 6 months to 1 year
+        - 1 to 5 years
+        - Over 5 years
     validations:
       required: true
   - type: textarea

.github/ISSUE_TEMPLATE/language_request.yml

@@ -1,6 +1,5 @@
 name: Language Request
-description: Request a new language to be added to CrowdIn for you to translate
-title: "[Language Request]: "
+description: Request a new language to be added to Crowdin for you to translate
 labels: [":earth_africa: Translations"]
 assignees:
   - ssddanbrown
@@ -24,7 +23,7 @@ body:
         This issue template is to request a new language be added to our [Crowdin translation management project](https://crowdin.com/project/bookstack).
         Please don't use this template to request a new language that you are not prepared to provide translations for.
       options:
-        - label: I confirm I'm offering to help translate for this new language via CrowdIn.
+        - label: I confirm I'm offering to help translate for this new language via Crowdin.
           required: true
   - type: markdown
     attributes:

.github/ISSUE_TEMPLATE/support_request.yml

@@ -1,6 +1,5 @@
 name: Support Request
 description: Request support for a specific problem you have not been able to solve yourself
-title: "[Support Request]: "
 labels: [":dog2: Support"]
 body:
   - type: checkboxes

.github/translators.txt

@@ -126,7 +126,7 @@ Zenahr Barzani (Zenahr) :: German; Japanese; Dutch; German Informal
 tatsuya.info :: Japanese
 fadiapp :: Arabic
 Jakub Bouček (jakubboucek) :: Czech
-Marco (cdrfun) :: German
+Marco (cdrfun) :: German; German Informal
 10935336 :: Chinese Simplified
 孟繁阳 (FanyangMeng) :: Chinese Simplified
 Andrej Močan (andrejm) :: Slovenian
@@ -158,14 +158,14 @@ HenrijsS :: Latvian
 Pascal R-B (pborgner) :: German
 Boris (Ginfred) :: Russian
 Jonas Anker Rasmussen (jonasanker) :: Danish
-Gerwin de Keijzer (gdekeijzer) :: Dutch; German; German Informal
+Gerwin de Keijzer (gdekeijzer) :: Dutch; German Informal; German
 kometchtech :: Japanese
 Auri (Atalonica) :: Catalan
 Francesco Franchina (ffranchina) :: Italian
 Aimrane Kds (aimrane.kds) :: Arabic
 whenwesober :: Indonesian
 Rem (remkovdhoef) :: Dutch
-syn7ax69 :: Bulgarian; Turkish
+syn7ax69 :: Bulgarian; Turkish; German
 Blaade :: French
 Behzad HosseinPoor (behzad.hp) :: Persian
 Ole Aldric (Swoy) :: Norwegian Bokmal
@@ -199,3 +199,62 @@ M Nafis Al Mukhdi (mnafisalmukhdi1) :: Indonesian
 sulfo :: Danish
 Raukze :: German
 zygimantus :: Lithuanian
+marinkaberg :: Russian
+Vitaliy (gviabcua) :: Ukrainian
+mannycarreiro :: Portuguese
+Thiago Rafael Pereira de Carvalho (thiago.rafael) :: Portuguese, Brazilian
+Ken Roger Bolgnes (kenbo124) :: Norwegian Bokmal
+Nguyen Hung Phuong (hnwolf) :: Vietnamese
+Umut ERGENE (umutergene67) :: Turkish
+Tomáš Batelka (Vofy) :: Czech
+Mundo Racional (ismael.mesquita) :: Portuguese, Brazilian
+Zarik (3apuk) :: Russian
+Ali Shaatani (a.shaatani) :: Arabic
+ChacMaster :: Portuguese, Brazilian
+Saeed (saeed205) :: Persian
+Julesdevops :: French
+peter cerny (posli.to.semka) :: Slovak
+Pavel Karlin (pavelkarlin) :: Russian
+SmokingCrop :: Dutch
+Maciej Lebiest (Szwendacz) :: Polish
+DiscordDigital :: German; German Informal
+Gábor Marton (dodver) :: Hungarian
+Jasell :: Swedish
+Ghost_chu (ghostchu) :: Chinese Simplified
+Ravid Shachar (ravidshachar) :: Hebrew
+Helga Guchshenskaya (guchshenskaya) :: Russian
+daniel chou (chou0214) :: Chinese Traditional
+Manolis PATRIARCHE (m.patriarche) :: French
+Mohammed Haboubi (haboubi92) :: Arabic
+roncallyt :: Portuguese, Brazilian
+goegol :: Dutch
+msevgen :: Turkish
+Khroners :: French
+MASOUD HOSSEINY (masoudme) :: Persian
+Thomerson Roncally (roncallyt) :: Portuguese, Brazilian
+metaarch :: Bulgarian
+Xabi (xabikip) :: Basque
+pedromcsousa :: Portuguese
+Nir Louk (looknear) :: Hebrew
+Alex (qianmengnet) :: Chinese Simplified
+stothew :: German
+sgenc :: Turkish
+Shukrullo (vodiylik) :: Uzbek
+William W. (Nevnt) :: Chinese Traditional
+eamaro :: Portuguese
+Ypsilon-dev :: Arabic
+Hieu Vuong Trung (vuongtrunghieu) :: Vietnamese
+David Clubb (davidoclubb) :: Welsh
+welles freire (wellesximenes) :: Portuguese, Brazilian
+Magnus Jensen (MagnusHJensen) :: Danish
+Hesley Magno (hesleymagno) :: Portuguese, Brazilian
+Éric Gaspar (erga) :: French
+Fr3shlama :: German
+DSR :: Spanish, Argentina
+Andrii Bodnar (andrii-bodnar) :: Ukrainian
+Younes el Anjri (younesea28) :: Dutch
+Guclu Ozturk (gucluoz) :: Turkish
+Atmis :: French
+redjack666 :: Chinese Traditional
+Ashita007 :: Russian
+lihaorr :: Chinese Simplified

.github/workflows/phpstan.yml

@@ -1,19 +1,14 @@
 name: phpstan
 
-on:
-  push:
-    branches-ignore:
-      - l10n_master
-  pull_request:
-    branches-ignore:
-      - l10n_master
+on: [push, pull_request]
 
 jobs:
   build:
+    if: ${{ github.ref != 'refs/heads/l10n_development' }}
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        php: ['7.3']
+        php: ['7.4']
     steps:
     - uses: actions/checkout@v1
 

.github/workflows/phpunit.yml

@@ -1,19 +1,14 @@
 name: phpunit
 
-on:
-  push:
-    branches-ignore:
-      - l10n_master
-  pull_request:
-    branches-ignore:
-      - l10n_master
+on: [push, pull_request]
 
 jobs:
   build:
+    if: ${{ github.ref != 'refs/heads/l10n_development' }}
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        php: ['7.3', '7.4', '8.0', '8.1']
+        php: ['7.4', '8.0', '8.1']
     steps:
     - uses: actions/checkout@v1
 
@@ -36,7 +31,7 @@ jobs:
 
     - name: Start Database
       run: |
-        sudo /etc/init.d/mysql start
+        sudo systemctl start mysql
 
     - name: Setup Database
       run: |

.github/workflows/test-migrations.yml

@@ -1,19 +1,14 @@
 name: test-migrations
 
-on:
-  push:
-    branches-ignore:
-      - l10n_master
-  pull_request:
-    branches-ignore:
-      - l10n_master
+on: [push, pull_request]
 
 jobs:
   build:
+    if: ${{ github.ref != 'refs/heads/l10n_development' }}
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        php: ['7.3', '7.4', '8.0', '8.1']
+        php: ['7.4', '8.0', '8.1']
     steps:
       - uses: actions/checkout@v1
 
@@ -36,7 +31,7 @@ jobs:
 
       - name: Start MySQL
         run: |
-          sudo /etc/init.d/mysql start
+          sudo systemctl start mysql
 
       - name: Create database & user
         run: |

app/Actions/ActivityLogger.php

@@ -0,0 +1,115 @@
+<?php
+
+namespace BookStack\Actions;
+
+use BookStack\Auth\Permissions\PermissionService;
+use BookStack\Entities\Models\Entity;
+use BookStack\Interfaces\Loggable;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Facades\Log;
+
+class ActivityLogger
+{
+    protected $permissionService;
+
+    public function __construct(PermissionService $permissionService)
+    {
+        $this->permissionService = $permissionService;
+    }
+
+    /**
+     * Add a generic activity event to the database.
+     *
+     * @param string|Loggable $detail
+     */
+    public function add(string $type, $detail = '')
+    {
+        $detailToStore = ($detail instanceof Loggable) ? $detail->logDescriptor() : $detail;
+
+        $activity = $this->newActivityForUser($type);
+        $activity->detail = $detailToStore;
+
+        if ($detail instanceof Entity) {
+            $activity->entity_id = $detail->id;
+            $activity->entity_type = $detail->getMorphClass();
+        }
+
+        $activity->save();
+        $this->setNotification($type);
+        $this->dispatchWebhooks($type, $detail);
+    }
+
+    /**
+     * Get a new activity instance for the current user.
+     */
+    protected function newActivityForUser(string $type): Activity
+    {
+        $ip = request()->ip() ?? '';
+
+        return (new Activity())->forceFill([
+            'type'     => strtolower($type),
+            'user_id'  => user()->id,
+            'ip'       => config('app.env') === 'demo' ? '127.0.0.1' : $ip,
+        ]);
+    }
+
+    /**
+     * Removes the entity attachment from each of its activities
+     * and instead uses the 'extra' field with the entities name.
+     * Used when an entity is deleted.
+     */
+    public function removeEntity(Entity $entity)
+    {
+        $entity->activity()->update([
+            'detail'       => $entity->name,
+            'entity_id'    => null,
+            'entity_type'  => null,
+        ]);
+    }
+
+    /**
+     * Flashes a notification message to the session if an appropriate message is available.
+     */
+    protected function setNotification(string $type): void
+    {
+        $notificationTextKey = 'activities.' . $type . '_notification';
+        if (trans()->has($notificationTextKey)) {
+            $message = trans($notificationTextKey);
+            session()->flash('success', $message);
+        }
+    }
+
+    /**
+     * @param string|Loggable $detail
+     */
+    protected function dispatchWebhooks(string $type, $detail): void
+    {
+        $webhooks = Webhook::query()
+            ->whereHas('trackedEvents', function (Builder $query) use ($type) {
+                $query->where('event', '=', $type)
+                    ->orWhere('event', '=', 'all');
+            })
+            ->where('active', '=', true)
+            ->get();
+
+        foreach ($webhooks as $webhook) {
+            dispatch(new DispatchWebhookJob($webhook, $type, $detail));
+        }
+    }
+
+    /**
+     * Log out a failed login attempt, Providing the given username
+     * as part of the message if the '%u' string is used.
+     */
+    public function logFailedLogin(string $username)
+    {
+        $message = config('logging.failed_login.message');
+        if (!$message) {
+            return;
+        }
+
+        $message = str_replace('%u', $username, $message);
+        $channel = config('logging.failed_login.channel');
+        Log::channel($channel)->warning($message);
+    }
+}

app/Actions/ActivityQueries.php

@@ -0,0 +1,112 @@
+<?php
+
+namespace BookStack\Actions;
+
+use BookStack\Auth\Permissions\PermissionService;
+use BookStack\Auth\User;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Entity;
+use BookStack\Entities\Models\Page;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\Relation;
+
+class ActivityQueries
+{
+    protected $permissionService;
+
+    public function __construct(PermissionService $permissionService)
+    {
+        $this->permissionService = $permissionService;
+    }
+
+    /**
+     * Gets the latest activity.
+     */
+    public function latest(int $count = 20, int $page = 0): array
+    {
+        $activityList = $this->permissionService
+            ->filterRestrictedEntityRelations(Activity::query(), 'activities', 'entity_id', 'entity_type')
+            ->orderBy('created_at', 'desc')
+            ->with(['user', 'entity'])
+            ->skip($count * $page)
+            ->take($count)
+            ->get();
+
+        return $this->filterSimilar($activityList);
+    }
+
+    /**
+     * Gets the latest activity for an entity, Filtering out similar
+     * items to prevent a message activity list.
+     */
+    public function entityActivity(Entity $entity, int $count = 20, int $page = 1): array
+    {
+        /** @var array<string, int[]> $queryIds */
+        $queryIds = [$entity->getMorphClass() => [$entity->id]];
+
+        if ($entity instanceof Book) {
+            $queryIds[(new Chapter())->getMorphClass()] = $entity->chapters()->scopes('visible')->pluck('id');
+        }
+        if ($entity instanceof Book || $entity instanceof Chapter) {
+            $queryIds[(new Page())->getMorphClass()] = $entity->pages()->scopes('visible')->pluck('id');
+        }
+
+        $query = Activity::query();
+        $query->where(function (Builder $query) use ($queryIds) {
+            foreach ($queryIds as $morphClass => $idArr) {
+                $query->orWhere(function (Builder $innerQuery) use ($morphClass, $idArr) {
+                    $innerQuery->where('entity_type', '=', $morphClass)
+                        ->whereIn('entity_id', $idArr);
+                });
+            }
+        });
+
+        $activity = $query->orderBy('created_at', 'desc')
+            ->with(['entity' => function (Relation $query) {
+                $query->withTrashed();
+            }, 'user.avatar'])
+            ->skip($count * ($page - 1))
+            ->take($count)
+            ->get();
+
+        return $this->filterSimilar($activity);
+    }
+
+    /**
+     * Get the latest activity for a user, Filtering out similar items.
+     */
+    public function userActivity(User $user, int $count = 20, int $page = 0): array
+    {
+        $activityList = $this->permissionService
+            ->filterRestrictedEntityRelations(Activity::query(), 'activities', 'entity_id', 'entity_type')
+            ->orderBy('created_at', 'desc')
+            ->where('user_id', '=', $user->id)
+            ->skip($count * $page)
+            ->take($count)
+            ->get();
+
+        return $this->filterSimilar($activityList);
+    }
+
+    /**
+     * Filters out similar activity.
+     *
+     * @param Activity[] $activities
+     */
+    protected function filterSimilar(iterable $activities): array
+    {
+        $newActivity = [];
+        $previousItem = null;
+
+        foreach ($activities as $activityItem) {
+            if (!$previousItem || !$activityItem->isSimilarTo($previousItem)) {
+                $newActivity[] = $activityItem;
+            }
+
+            $previousItem = $activityItem;
+        }
+
+        return $newActivity;
+    }
+}

app/Actions/ActivityService.php

@@ -1,200 +0,0 @@
-<?php
-
-namespace BookStack\Actions;
-
-use BookStack\Auth\Permissions\PermissionService;
-use BookStack\Auth\User;
-use BookStack\Entities\Models\Chapter;
-use BookStack\Entities\Models\Entity;
-use BookStack\Entities\Models\Page;
-use BookStack\Interfaces\Loggable;
-use Illuminate\Database\Eloquent\Builder;
-use Illuminate\Database\Eloquent\Relations\Relation;
-use Illuminate\Support\Facades\Log;
-
-class ActivityService
-{
-    protected $activity;
-    protected $permissionService;
-
-    public function __construct(Activity $activity, PermissionService $permissionService)
-    {
-        $this->activity = $activity;
-        $this->permissionService = $permissionService;
-    }
-
-    /**
-     * Add activity data to database for an entity.
-     */
-    public function addForEntity(Entity $entity, string $type)
-    {
-        $activity = $this->newActivityForUser($type);
-        $entity->activity()->save($activity);
-        $this->setNotification($type);
-    }
-
-    /**
-     * Add a generic activity event to the database.
-     *
-     * @param string|Loggable $detail
-     */
-    public function add(string $type, $detail = '')
-    {
-        if ($detail instanceof Loggable) {
-            $detail = $detail->logDescriptor();
-        }
-
-        $activity = $this->newActivityForUser($type);
-        $activity->detail = $detail;
-        $activity->save();
-        $this->setNotification($type);
-    }
-
-    /**
-     * Get a new activity instance for the current user.
-     */
-    protected function newActivityForUser(string $type): Activity
-    {
-        $ip = request()->ip() ?? '';
-
-        return $this->activity->newInstance()->forceFill([
-            'type'     => strtolower($type),
-            'user_id'  => user()->id,
-            'ip'       => config('app.env') === 'demo' ? '127.0.0.1' : $ip,
-        ]);
-    }
-
-    /**
-     * Removes the entity attachment from each of its activities
-     * and instead uses the 'extra' field with the entities name.
-     * Used when an entity is deleted.
-     */
-    public function removeEntity(Entity $entity)
-    {
-        $entity->activity()->update([
-            'detail'       => $entity->name,
-            'entity_id'    => null,
-            'entity_type'  => null,
-        ]);
-    }
-
-    /**
-     * Gets the latest activity.
-     */
-    public function latest(int $count = 20, int $page = 0): array
-    {
-        $activityList = $this->permissionService
-            ->filterRestrictedEntityRelations($this->activity->newQuery(), 'activities', 'entity_id', 'entity_type')
-            ->orderBy('created_at', 'desc')
-            ->with(['user', 'entity'])
-            ->skip($count * $page)
-            ->take($count)
-            ->get();
-
-        return $this->filterSimilar($activityList);
-    }
-
-    /**
-     * Gets the latest activity for an entity, Filtering out similar
-     * items to prevent a message activity list.
-     */
-    public function entityActivity(Entity $entity, int $count = 20, int $page = 1): array
-    {
-        /** @var [string => int[]] $queryIds */
-        $queryIds = [$entity->getMorphClass() => [$entity->id]];
-
-        if ($entity->isA('book')) {
-            $queryIds[(new Chapter())->getMorphClass()] = $entity->chapters()->visible()->pluck('id');
-        }
-        if ($entity->isA('book') || $entity->isA('chapter')) {
-            $queryIds[(new Page())->getMorphClass()] = $entity->pages()->visible()->pluck('id');
-        }
-
-        $query = $this->activity->newQuery();
-        $query->where(function (Builder $query) use ($queryIds) {
-            foreach ($queryIds as $morphClass => $idArr) {
-                $query->orWhere(function (Builder $innerQuery) use ($morphClass, $idArr) {
-                    $innerQuery->where('entity_type', '=', $morphClass)
-                        ->whereIn('entity_id', $idArr);
-                });
-            }
-        });
-
-        $activity = $query->orderBy('created_at', 'desc')
-            ->with(['entity' => function (Relation $query) {
-                $query->withTrashed();
-            }, 'user.avatar'])
-            ->skip($count * ($page - 1))
-            ->take($count)
-            ->get();
-
-        return $this->filterSimilar($activity);
-    }
-
-    /**
-     * Get latest activity for a user, Filtering out similar items.
-     */
-    public function userActivity(User $user, int $count = 20, int $page = 0): array
-    {
-        $activityList = $this->permissionService
-            ->filterRestrictedEntityRelations($this->activity->newQuery(), 'activities', 'entity_id', 'entity_type')
-            ->orderBy('created_at', 'desc')
-            ->where('user_id', '=', $user->id)
-            ->skip($count * $page)
-            ->take($count)
-            ->get();
-
-        return $this->filterSimilar($activityList);
-    }
-
-    /**
-     * Filters out similar activity.
-     *
-     * @param Activity[] $activities
-     *
-     * @return array
-     */
-    protected function filterSimilar(iterable $activities): array
-    {
-        $newActivity = [];
-        $previousItem = null;
-
-        foreach ($activities as $activityItem) {
-            if (!$previousItem || !$activityItem->isSimilarTo($previousItem)) {
-                $newActivity[] = $activityItem;
-            }
-
-            $previousItem = $activityItem;
-        }
-
-        return $newActivity;
-    }
-
-    /**
-     * Flashes a notification message to the session if an appropriate message is available.
-     */
-    protected function setNotification(string $type)
-    {
-        $notificationTextKey = 'activities.' . $type . '_notification';
-        if (trans()->has($notificationTextKey)) {
-            $message = trans($notificationTextKey);
-            session()->flash('success', $message);
-        }
-    }
-
-    /**
-     * Log out a failed login attempt, Providing the given username
-     * as part of the message if the '%u' string is used.
-     */
-    public function logFailedLogin(string $username)
-    {
-        $message = config('logging.failed_login.message');
-        if (!$message) {
-            return;
-        }
-
-        $message = str_replace('%u', $username, $message);
-        $channel = config('logging.failed_login.channel');
-        Log::channel($channel)->warning($message);
-    }
-}

app/Actions/ActivityType.php

@@ -16,11 +16,13 @@ class ActivityType
     const CHAPTER_MOVE = 'chapter_move';
 
     const BOOK_CREATE = 'book_create';
+    const BOOK_CREATE_FROM_CHAPTER = 'book_create_from_chapter';
     const BOOK_UPDATE = 'book_update';
     const BOOK_DELETE = 'book_delete';
     const BOOK_SORT = 'book_sort';
 
     const BOOKSHELF_CREATE = 'bookshelf_create';
+    const BOOKSHELF_CREATE_FROM_BOOK = 'bookshelf_create_from_book';
     const BOOKSHELF_UPDATE = 'bookshelf_update';
     const BOOKSHELF_DELETE = 'bookshelf_delete';
 
@@ -53,4 +55,16 @@ class ActivityType
 
     const MFA_SETUP_METHOD = 'mfa_setup_method';
     const MFA_REMOVE_METHOD = 'mfa_remove_method';
+
+    const WEBHOOK_CREATE = 'webhook_create';
+    const WEBHOOK_UPDATE = 'webhook_update';
+    const WEBHOOK_DELETE = 'webhook_delete';
+
+    /**
+     * Get all the possible values.
+     */
+    public static function all(): array
+    {
+        return (new \ReflectionClass(static::class))->getConstants();
+    }
 }

app/Actions/CommentRepo.php

@@ -45,7 +45,7 @@ class CommentRepo
         $comment->parent_id = $parent_id;
 
         $entity->comments()->save($comment);
-        ActivityService::addForEntity($entity, ActivityType::COMMENTED_ON);
+        ActivityService::add(ActivityType::COMMENTED_ON, $entity);
 
         return $comment;
     }

app/Actions/DispatchWebhookJob.php

@@ -0,0 +1,82 @@
+<?php
+
+namespace BookStack\Actions;
+
+use BookStack\Auth\User;
+use BookStack\Facades\Theme;
+use BookStack\Interfaces\Loggable;
+use BookStack\Theming\ThemeEvents;
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Foundation\Bus\Dispatchable;
+use Illuminate\Queue\InteractsWithQueue;
+use Illuminate\Queue\SerializesModels;
+use Illuminate\Support\Facades\Http;
+use Illuminate\Support\Facades\Log;
+
+class DispatchWebhookJob implements ShouldQueue
+{
+    use Dispatchable;
+    use InteractsWithQueue;
+    use Queueable;
+    use SerializesModels;
+
+    protected Webhook $webhook;
+    protected string $event;
+    protected User $initiator;
+    protected int $initiatedTime;
+
+    /**
+     * @var string|Loggable
+     */
+    protected $detail;
+
+    /**
+     * Create a new job instance.
+     *
+     * @return void
+     */
+    public function __construct(Webhook $webhook, string $event, $detail)
+    {
+        $this->webhook = $webhook;
+        $this->event = $event;
+        $this->detail = $detail;
+        $this->initiator = user();
+        $this->initiatedTime = time();
+    }
+
+    /**
+     * Execute the job.
+     *
+     * @return void
+     */
+    public function handle()
+    {
+        $themeResponse = Theme::dispatch(ThemeEvents::WEBHOOK_CALL_BEFORE, $this->event, $this->webhook, $this->detail, $this->initiator, $this->initiatedTime);
+        $webhookData = $themeResponse ?? WebhookFormatter::getDefault($this->event, $this->webhook, $this->detail, $this->initiator, $this->initiatedTime)->format();
+        $lastError = null;
+
+        try {
+            $response = Http::asJson()
+                ->withOptions(['allow_redirects' => ['strict' => true]])
+                ->timeout($this->webhook->timeout)
+                ->post($this->webhook->endpoint, $webhookData);
+        } catch (\Exception $exception) {
+            $lastError = $exception->getMessage();
+            Log::error("Webhook call to endpoint {$this->webhook->endpoint} failed with error \"{$lastError}\"");
+        }
+
+        if (isset($response) && $response->failed()) {
+            $lastError = "Response status from endpoint was {$response->status()}";
+            Log::error("Webhook call to endpoint {$this->webhook->endpoint} failed with status {$response->status()}");
+        }
+
+        $this->webhook->last_called_at = now();
+        if ($lastError) {
+            $this->webhook->last_errored_at = now();
+            $this->webhook->last_error = $lastError;
+        }
+
+        $this->webhook->save();
+    }
+}

app/Actions/TagRepo.php

@@ -28,10 +28,10 @@ class TagRepo
                 'name',
                 ($searchTerm || $nameFilter) ? 'value' : DB::raw('COUNT(distinct value) as `values`'),
                 DB::raw('COUNT(id) as usages'),
-                DB::raw('SUM(IF(entity_type = \'BookStack\\\\Page\', 1, 0)) as page_count'),
-                DB::raw('SUM(IF(entity_type = \'BookStack\\\\Chapter\', 1, 0)) as chapter_count'),
-                DB::raw('SUM(IF(entity_type = \'BookStack\\\\Book\', 1, 0)) as book_count'),
-                DB::raw('SUM(IF(entity_type = \'BookStack\\\\BookShelf\', 1, 0)) as shelf_count'),
+                DB::raw('SUM(IF(entity_type = \'page\', 1, 0)) as page_count'),
+                DB::raw('SUM(IF(entity_type = \'chapter\', 1, 0)) as chapter_count'),
+                DB::raw('SUM(IF(entity_type = \'book\', 1, 0)) as book_count'),
+                DB::raw('SUM(IF(entity_type = \'bookshelf\', 1, 0)) as shelf_count'),
             ])
             ->orderBy($nameFilter ? 'value' : 'name');
 

app/Actions/Webhook.php

@@ -0,0 +1,85 @@
+<?php
+
+namespace BookStack\Actions;
+
+use BookStack\Interfaces\Loggable;
+use Carbon\Carbon;
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+/**
+ * @property int        $id
+ * @property string     $name
+ * @property string     $endpoint
+ * @property Collection $trackedEvents
+ * @property bool       $active
+ * @property int        $timeout
+ * @property string     $last_error
+ * @property Carbon     $last_called_at
+ * @property Carbon     $last_errored_at
+ */
+class Webhook extends Model implements Loggable
+{
+    protected $fillable = ['name', 'endpoint', 'timeout'];
+
+    use HasFactory;
+
+    protected $casts = [
+        'last_called_at'  => 'datetime',
+        'last_errored_at' => 'datetime',
+    ];
+
+    /**
+     * Define the tracked event relation a webhook.
+     */
+    public function trackedEvents(): HasMany
+    {
+        return $this->hasMany(WebhookTrackedEvent::class);
+    }
+
+    /**
+     * Update the tracked events for a webhook from the given list of event types.
+     */
+    public function updateTrackedEvents(array $events): void
+    {
+        $this->trackedEvents()->delete();
+
+        $eventsToStore = array_intersect($events, array_values(ActivityType::all()));
+        if (in_array('all', $events)) {
+            $eventsToStore = ['all'];
+        }
+
+        $trackedEvents = [];
+        foreach ($eventsToStore as $event) {
+            $trackedEvents[] = new WebhookTrackedEvent(['event' => $event]);
+        }
+
+        $this->trackedEvents()->saveMany($trackedEvents);
+    }
+
+    /**
+     * Check if this webhook tracks the given event.
+     */
+    public function tracksEvent(string $event): bool
+    {
+        return $this->trackedEvents->pluck('event')->contains($event);
+    }
+
+    /**
+     * Get a URL for this webhook within the settings interface.
+     */
+    public function getUrl(string $path = ''): string
+    {
+        return url('/settings/webhooks/' . $this->id . '/' . ltrim($path, '/'));
+    }
+
+    /**
+     * Get the string descriptor for this item.
+     */
+    public function logDescriptor(): string
+    {
+        return "({$this->id}) {$this->name}";
+    }
+}

app/Actions/WebhookFormatter.php

@@ -0,0 +1,124 @@
+<?php
+
+namespace BookStack\Actions;
+
+use BookStack\Auth\User;
+use BookStack\Entities\Models\Entity;
+use BookStack\Entities\Models\Page;
+use BookStack\Interfaces\Loggable;
+use BookStack\Model;
+use Illuminate\Support\Carbon;
+
+class WebhookFormatter
+{
+    protected Webhook $webhook;
+    protected string $event;
+    protected User $initiator;
+    protected int $initiatedTime;
+
+    /**
+     * @var string|Loggable
+     */
+    protected $detail;
+
+    /**
+     * @var array{condition: callable(string, Model):bool, format: callable(Model):void}[]
+     */
+    protected $modelFormatters = [];
+
+    public function __construct(string $event, Webhook $webhook, $detail, User $initiator, int $initiatedTime)
+    {
+        $this->webhook = $webhook;
+        $this->event = $event;
+        $this->initiator = $initiator;
+        $this->initiatedTime = $initiatedTime;
+        $this->detail = is_object($detail) ? clone $detail : $detail;
+    }
+
+    public function format(): array
+    {
+        $data = [
+            'event'                    => $this->event,
+            'text'                     => $this->formatText(),
+            'triggered_at'             => Carbon::createFromTimestampUTC($this->initiatedTime)->toISOString(),
+            'triggered_by'             => $this->initiator->attributesToArray(),
+            'triggered_by_profile_url' => $this->initiator->getProfileUrl(),
+            'webhook_id'               => $this->webhook->id,
+            'webhook_name'             => $this->webhook->name,
+        ];
+
+        if (method_exists($this->detail, 'getUrl')) {
+            $data['url'] = $this->detail->getUrl();
+        }
+
+        if ($this->detail instanceof Model) {
+            $data['related_item'] = $this->formatModel();
+        }
+
+        return $data;
+    }
+
+    /**
+     * @param callable(string, Model):bool $condition
+     * @param callable(Model):void         $format
+     */
+    public function addModelFormatter(callable $condition, callable $format): void
+    {
+        $this->modelFormatters[] = [
+            'condition' => $condition,
+            'format'    => $format,
+        ];
+    }
+
+    public function addDefaultModelFormatters(): void
+    {
+        // Load entity owner, creator, updater details
+        $this->addModelFormatter(
+            fn ($event, $model) => ($model instanceof Entity),
+            fn ($model) => $model->load(['ownedBy', 'createdBy', 'updatedBy'])
+        );
+
+        // Load revision detail for page update and create events
+        $this->addModelFormatter(
+            fn ($event, $model) => ($model instanceof Page && ($event === ActivityType::PAGE_CREATE || $event === ActivityType::PAGE_UPDATE)),
+            fn ($model) => $model->load('currentRevision')
+        );
+    }
+
+    protected function formatModel(): array
+    {
+        /** @var Model $model */
+        $model = $this->detail;
+        $model->unsetRelations();
+
+        foreach ($this->modelFormatters as $formatter) {
+            if ($formatter['condition']($this->event, $model)) {
+                $formatter['format']($model);
+            }
+        }
+
+        return $model->toArray();
+    }
+
+    protected function formatText(): string
+    {
+        $textParts = [
+            $this->initiator->name,
+            trans('activities.' . $this->event),
+        ];
+
+        if ($this->detail instanceof Entity) {
+            $textParts[] = '"' . $this->detail->name . '"';
+        }
+
+        return implode(' ', $textParts);
+    }
+
+    public static function getDefault(string $event, Webhook $webhook, $detail, User $initiator, int $initiatedTime): self
+    {
+        $instance = new self($event, $webhook, $detail, $initiator, $initiatedTime);
+        $instance->addDefaultModelFormatters();
+
+        return $instance;
+    }
+}

app/Actions/WebhookTrackedEvent.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace BookStack\Actions;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * @property int    $id
+ * @property int    $webhook_id
+ * @property string $event
+ */
+class WebhookTrackedEvent extends Model
+{
+    protected $fillable = ['event'];
+
+    use HasFactory;
+}

app/Api/ApiDocsGenerator.php

@@ -3,11 +3,13 @@
 namespace BookStack\Api;
 
 use BookStack\Http\Controllers\Api\ApiController;
+use Exception;
 use Illuminate\Contracts\Container\BindingResolutionException;
 use Illuminate\Support\Collection;
 use Illuminate\Support\Facades\Cache;
 use Illuminate\Support\Facades\Route;
 use Illuminate\Support\Str;
+use Illuminate\Validation\Rules\Password;
 use ReflectionClass;
 use ReflectionException;
 use ReflectionMethod;
@@ -100,11 +102,37 @@ class ApiDocsGenerator
             $this->controllerClasses[$className] = $class;
         }
 
-        $rules = $class->getValdationRules()[$methodName] ?? [];
+        $rules = collect($class->getValidationRules()[$methodName] ?? [])->map(function ($validations) {
+            return array_map(function ($validation) {
+                return $this->getValidationAsString($validation);
+            }, $validations);
+        })->toArray();
 
         return empty($rules) ? null : $rules;
     }
 
+    /**
+     * Convert the given validation message to a readable string.
+     */
+    protected function getValidationAsString($validation): string
+    {
+        if (is_string($validation)) {
+            return $validation;
+        }
+
+        if (is_object($validation) && method_exists($validation, '__toString')) {
+            return strval($validation);
+        }
+
+        if ($validation instanceof Password) {
+            return 'min:8';
+        }
+
+        $class = get_class($validation);
+
+        throw new Exception("Cannot provide string representation of rule for class: {$class}");
+    }
+
     /**
      * Parse out the description text from a class method comment.
      */

app/Api/ListingResponseBuilder.php

@@ -2,8 +2,10 @@
 
 namespace BookStack\Api;
 
+use BookStack\Model;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 
 class ListingResponseBuilder
@@ -12,6 +14,11 @@ class ListingResponseBuilder
     protected $request;
     protected $fields;
 
+    /**
+     * @var array<callable>
+     */
+    protected $resultModifiers = [];
+
     protected $filterOperators = [
         'eq'   => '=',
         'ne'   => '!=',
@@ -24,6 +31,7 @@ class ListingResponseBuilder
 
     /**
      * ListingResponseBuilder constructor.
+     * The given fields will be forced visible within the model results.
      */
     public function __construct(Builder $query, Request $request, array $fields)
     {
@@ -35,12 +43,16 @@ class ListingResponseBuilder
     /**
      * Get the response from this builder.
      */
-    public function toResponse()
+    public function toResponse(): JsonResponse
     {
         $filteredQuery = $this->filterQuery($this->query);
 
         $total = $filteredQuery->count();
-        $data = $this->fetchData($filteredQuery);
+        $data = $this->fetchData($filteredQuery)->each(function ($model) {
+            foreach ($this->resultModifiers as $modifier) {
+                $modifier($model);
+            }
+        });
 
         return response()->json([
             'data'  => $data,
@@ -49,7 +61,17 @@ class ListingResponseBuilder
     }
 
     /**
-     * Fetch the data to return in the response.
+     * Add a callback to modify each element of the results.
+     *
+     * @param (callable(Model)) $modifier
+     */
+    public function modifyResults($modifier): void
+    {
+        $this->resultModifiers[] = $modifier;
+    }
+
+    /**
+     * Fetch the data to return within the response.
      */
     protected function fetchData(Builder $query): Collection
     {

app/Auth/Access/ExternalBaseUserProvider.php

@@ -4,6 +4,7 @@ namespace BookStack\Auth\Access;
 
 use Illuminate\Contracts\Auth\Authenticatable;
 use Illuminate\Contracts\Auth\UserProvider;
+use Illuminate\Database\Eloquent\Model;
 
 class ExternalBaseUserProvider implements UserProvider
 {
@@ -16,8 +17,6 @@ class ExternalBaseUserProvider implements UserProvider
 
     /**
      * LdapUserProvider constructor.
-     *
-     * @param $model
      */
     public function __construct(string $model)
     {
@@ -27,7 +26,7 @@ class ExternalBaseUserProvider implements UserProvider
     /**
      * Create a new instance of the model.
      *
-     * @return \Illuminate\Database\Eloquent\Model
+     * @return Model
      */
     public function createModel()
     {
@@ -41,7 +40,7 @@ class ExternalBaseUserProvider implements UserProvider
      *
      * @param mixed $identifier
      *
-     * @return \Illuminate\Contracts\Auth\Authenticatable|null
+     * @return Authenticatable|null
      */
     public function retrieveById($identifier)
     {
@@ -54,7 +53,7 @@ class ExternalBaseUserProvider implements UserProvider
      * @param mixed  $identifier
      * @param string $token
      *
-     * @return \Illuminate\Contracts\Auth\Authenticatable|null
+     * @return Authenticatable|null
      */
     public function retrieveByToken($identifier, $token)
     {
@@ -64,8 +63,8 @@ class ExternalBaseUserProvider implements UserProvider
     /**
      * Update the "remember me" token for the given user in storage.
      *
-     * @param \Illuminate\Contracts\Auth\Authenticatable $user
-     * @param string                                     $token
+     * @param Authenticatable $user
+     * @param string          $token
      *
      * @return void
      */
@@ -79,7 +78,7 @@ class ExternalBaseUserProvider implements UserProvider
      *
      * @param array $credentials
      *
-     * @return \Illuminate\Contracts\Auth\Authenticatable|null
+     * @return Authenticatable|null
      */
     public function retrieveByCredentials(array $credentials)
     {
@@ -94,8 +93,8 @@ class ExternalBaseUserProvider implements UserProvider
     /**
      * Validate a user against the given credentials.
      *
-     * @param \Illuminate\Contracts\Auth\Authenticatable $user
-     * @param array                                      $credentials
+     * @param Authenticatable $user
+     * @param array           $credentials
      *
      * @return bool
      */

app/Auth/Access/GroupSyncService.php

@@ -28,10 +28,8 @@ class GroupSyncService
      */
     protected function externalIdMatchesGroupNames(string $externalId, array $groupNames): bool
     {
-        $externalAuthIds = explode(',', strtolower($externalId));
-
-        foreach ($externalAuthIds as $externalAuthId) {
-            if (in_array(trim($externalAuthId), $groupNames)) {
+        foreach ($this->parseRoleExternalAuthId($externalId) as $externalAuthId) {
+            if (in_array($externalAuthId, $groupNames)) {
                 return true;
             }
         }
@@ -39,6 +37,18 @@ class GroupSyncService
         return false;
     }
 
+    protected function parseRoleExternalAuthId(string $externalId): array
+    {
+        $inputIds = preg_split('/(?<!\\\),/', $externalId);
+        $cleanIds = [];
+
+        foreach ($inputIds as $inputId) {
+            $cleanIds[] = str_replace('\,', ',', trim($inputId));
+        }
+
+        return $cleanIds;
+    }
+
     /**
      * Match an array of group names to BookStack system roles.
      * Formats group names to be lower-case and hyphenated.

app/Auth/Access/Guards/LdapSessionGuard.php

@@ -5,6 +5,7 @@ namespace BookStack\Auth\Access\Guards;
 use BookStack\Auth\Access\LdapService;
 use BookStack\Auth\Access\RegistrationService;
 use BookStack\Auth\User;
+use BookStack\Exceptions\JsonDebugException;
 use BookStack\Exceptions\LdapException;
 use BookStack\Exceptions\LoginAttemptEmailNeededException;
 use BookStack\Exceptions\LoginAttemptException;
@@ -15,7 +16,7 @@ use Illuminate\Support\Str;
 
 class LdapSessionGuard extends ExternalBaseSessionGuard
 {
-    protected $ldapService;
+    protected LdapService $ldapService;
 
     /**
      * LdapSessionGuard constructor.
@@ -59,8 +60,9 @@ class LdapSessionGuard extends ExternalBaseSessionGuard
      * @param array $credentials
      * @param bool  $remember
      *
+     * @throws LdapException*@throws \BookStack\Exceptions\JsonDebugException
      * @throws LoginAttemptException
-     * @throws LdapException
+     * @throws JsonDebugException
      *
      * @return bool
      */
@@ -84,7 +86,7 @@ class LdapSessionGuard extends ExternalBaseSessionGuard
             try {
                 $user = $this->createNewFromLdapAndCreds($userDetails, $credentials);
             } catch (UserRegistrationException $exception) {
-                throw new LoginAttemptException($exception->message);
+                throw new LoginAttemptException($exception->getMessage());
             }
         }
 

app/Auth/Access/LdapService.php

@@ -15,12 +15,17 @@ use Illuminate\Support\Facades\Log;
  */
 class LdapService
 {
-    protected $ldap;
-    protected $groupSyncService;
+    protected Ldap $ldap;
+    protected GroupSyncService $groupSyncService;
+    protected UserAvatars $userAvatars;
+
+    /**
+     * @var resource
+     */
     protected $ldapConnection;
-    protected $userAvatars;
-    protected $config;
-    protected $enabled;
+
+    protected array $config;
+    protected bool $enabled;
 
     /**
      * LdapService constructor.
@@ -165,7 +170,7 @@ class LdapService
      * Bind the system user to the LDAP connection using the given credentials
      * otherwise anonymous access is attempted.
      *
-     * @param $connection
+     * @param resource $connection
      *
      * @throws LdapException
      */
@@ -274,6 +279,7 @@ class LdapService
      * Get the groups a user is a part of on ldap.
      *
      * @throws LdapException
+     * @throws JsonDebugException
      */
     public function getUserGroups(string $userName): array
     {
@@ -285,8 +291,17 @@ class LdapService
         }
 
         $userGroups = $this->groupFilter($user);
+        $allGroups = $this->getGroupsRecursive($userGroups, []);
 
-        return $this->getGroupsRecursive($userGroups, []);
+        if ($this->config['dump_user_groups']) {
+            throw new JsonDebugException([
+                'details_from_ldap'             => $user,
+                'parsed_direct_user_groups'     => $userGroups,
+                'parsed_recursive_user_groups'  => $allGroups,
+            ]);
+        }
+
+        return $allGroups;
     }
 
     /**
@@ -369,6 +384,7 @@ class LdapService
      * Sync the LDAP groups to the user roles for the current user.
      *
      * @throws LdapException
+     * @throws JsonDebugException
      */
     public function syncGroups(User $user, string $username)
     {

app/Auth/Access/Oidc/OidcException.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace BookStack\Auth\Access\Oidc;
+
+use Exception;
+
+class OidcException extends Exception
+{
+}

app/Auth/Access/Oidc/OidcIssuerDiscoveryException.php

@@ -2,6 +2,8 @@
 
 namespace BookStack\Auth\Access\Oidc;
 
-class OidcIssuerDiscoveryException extends \Exception
+use Exception;
+
+class OidcIssuerDiscoveryException extends Exception
 {
 }

app/Auth/Access/Oidc/OidcJwtSigningKey.php

@@ -41,16 +41,18 @@ class OidcJwtSigningKey
     protected function loadFromPath(string $path)
     {
         try {
-            $this->key = PublicKeyLoader::load(
+            $key = PublicKeyLoader::load(
                 file_get_contents($path)
-            )->withPadding(RSA::SIGNATURE_PKCS1);
+            );
         } catch (\Exception $exception) {
             throw new OidcInvalidKeyException("Failed to load key from file path with error: {$exception->getMessage()}");
         }
 
-        if (!($this->key instanceof RSA)) {
+        if (!$key instanceof RSA) {
             throw new OidcInvalidKeyException('Key loaded from file path is not an RSA key as expected');
         }
+
+        $this->key = $key->withPadding(RSA::SIGNATURE_PKCS1);
     }
 
     /**
@@ -58,8 +60,11 @@ class OidcJwtSigningKey
      */
     protected function loadFromJwkArray(array $jwk)
     {
-        if ($jwk['alg'] !== 'RS256') {
-            throw new OidcInvalidKeyException("Only RS256 keys are currently supported. Found key using {$jwk['alg']}");
+        // 'alg' is optional for a JWK, but we will still attempt to validate if
+        // it exists otherwise presume it will be compatible.
+        $alg = $jwk['alg'] ?? null;
+        if ($jwk['kty'] !== 'RSA' || !(is_null($alg) || $alg === 'RS256')) {
+            throw new OidcInvalidKeyException("Only RS256 keys are currently supported. Found key using {$alg}");
         }
 
         if (empty($jwk['use'])) {
@@ -81,14 +86,19 @@ class OidcJwtSigningKey
         $n = strtr($jwk['n'] ?? '', '-_', '+/');
 
         try {
-            /** @var RSA $key */
-            $this->key = PublicKeyLoader::load([
+            $key = PublicKeyLoader::load([
                 'e' => new BigInteger(base64_decode($jwk['e']), 256),
                 'n' => new BigInteger(base64_decode($n), 256),
-            ])->withPadding(RSA::SIGNATURE_PKCS1);
+            ]);
         } catch (\Exception $exception) {
             throw new OidcInvalidKeyException("Failed to load key from JWK parameters with error: {$exception->getMessage()}");
         }
+
+        if (!$key instanceof RSA) {
+            throw new OidcInvalidKeyException('Key loaded from file path is not an RSA key as expected');
+        }
+
+        $this->key = $key->withPadding(RSA::SIGNATURE_PKCS1);
     }
 
     /**

app/Auth/Access/Oidc/OidcProviderSettings.php

@@ -164,7 +164,9 @@ class OidcProviderSettings
     protected function filterKeys(array $keys): array
     {
         return array_filter($keys, function (array $key) {
-            return $key['kty'] === 'RSA' && $key['use'] === 'sig' && $key['alg'] === 'RS256';
+            $alg = $key['alg'] ?? null;
+
+            return $key['kty'] === 'RSA' && $key['use'] === 'sig' && (is_null($alg) || $alg === 'RS256');
         });
     }
 

app/Auth/Access/Oidc/OidcService.php

@@ -7,14 +7,12 @@ use BookStack\Auth\Access\LoginService;
 use BookStack\Auth\Access\RegistrationService;
 use BookStack\Auth\User;
 use BookStack\Exceptions\JsonDebugException;
-use BookStack\Exceptions\OpenIdConnectException;
 use BookStack\Exceptions\StoppedAuthenticationException;
 use BookStack\Exceptions\UserRegistrationException;
 use function config;
-use Exception;
 use Illuminate\Support\Facades\Cache;
 use League\OAuth2\Client\OptionProvider\HttpBasicAuthOptionProvider;
-use Psr\Http\Client\ClientExceptionInterface;
+use League\OAuth2\Client\Provider\Exception\IdentityProviderException;
 use Psr\Http\Client\ClientInterface as HttpClient;
 use function trans;
 use function url;
@@ -25,9 +23,9 @@ use function url;
  */
 class OidcService
 {
-    protected $registrationService;
-    protected $loginService;
-    protected $httpClient;
+    protected RegistrationService $registrationService;
+    protected LoginService $loginService;
+    protected HttpClient $httpClient;
 
     /**
      * OpenIdService constructor.
@@ -42,6 +40,8 @@ class OidcService
     /**
      * Initiate an authorization flow.
      *
+     * @throws OidcException
+     *
      * @return array{url: string, state: string}
      */
     public function login(): array
@@ -57,14 +57,15 @@ class OidcService
 
     /**
      * Process the Authorization response from the authorization server and
-     * return the matching, or new if registration active, user matched to
-     * the authorization server.
-     * Returns null if not authenticated.
+     * return the matching, or new if registration active, user matched to the
+     * authorization server. Throws if the user cannot be auth if not authenticated.
      *
-     * @throws Exception
-     * @throws ClientExceptionInterface
+     * @throws JsonDebugException
+     * @throws OidcException
+     * @throws StoppedAuthenticationException
+     * @throws IdentityProviderException
      */
-    public function processAuthorizeResponse(?string $authorizationCode): ?User
+    public function processAuthorizeResponse(?string $authorizationCode): User
     {
         $settings = $this->getProviderSettings();
         $provider = $this->getProvider($settings);
@@ -78,8 +79,7 @@ class OidcService
     }
 
     /**
-     * @throws OidcIssuerDiscoveryException
-     * @throws ClientExceptionInterface
+     * @throws OidcException
      */
     protected function getProviderSettings(): OidcProviderSettings
     {
@@ -100,7 +100,11 @@ class OidcService
 
         // Run discovery
         if ($config['discover'] ?? false) {
-            $settings->discoverFromIssuer($this->httpClient, Cache::store(null), 15);
+            try {
+                $settings->discoverFromIssuer($this->httpClient, Cache::store(null), 15);
+            } catch (OidcIssuerDiscoveryException $exception) {
+                throw new OidcException('OIDC Discovery Error: ' . $exception->getMessage());
+            }
         }
 
         $settings->validate();
@@ -161,9 +165,8 @@ class OidcService
      * Processes a received access token for a user. Login the user when
      * they exist, optionally registering them automatically.
      *
-     * @throws OpenIdConnectException
+     * @throws OidcException
      * @throws JsonDebugException
-     * @throws UserRegistrationException
      * @throws StoppedAuthenticationException
      */
     protected function processAccessTokenCallback(OidcAccessToken $accessToken, OidcProviderSettings $settings): User
@@ -182,28 +185,28 @@ class OidcService
         try {
             $idToken->validate($settings->clientId);
         } catch (OidcInvalidTokenException $exception) {
-            throw new OpenIdConnectException("ID token validate failed with error: {$exception->getMessage()}");
+            throw new OidcException("ID token validate failed with error: {$exception->getMessage()}");
         }
 
         $userDetails = $this->getUserDetails($idToken);
         $isLoggedIn = auth()->check();
 
         if (empty($userDetails['email'])) {
-            throw new OpenIdConnectException(trans('errors.oidc_no_email_address'));
+            throw new OidcException(trans('errors.oidc_no_email_address'));
         }
 
         if ($isLoggedIn) {
-            throw new OpenIdConnectException(trans('errors.oidc_already_logged_in'), '/login');
+            throw new OidcException(trans('errors.oidc_already_logged_in'));
         }
 
-        $user = $this->registrationService->findOrRegister(
-            $userDetails['name'],
-            $userDetails['email'],
-            $userDetails['external_id']
-        );
-
-        if ($user === null) {
-            throw new OpenIdConnectException(trans('errors.oidc_user_not_registered', ['name' => $userDetails['external_id']]), '/login');
+        try {
+            $user = $this->registrationService->findOrRegister(
+                $userDetails['name'],
+                $userDetails['email'],
+                $userDetails['external_id']
+            );
+        } catch (UserRegistrationException $exception) {
+            throw new OidcException($exception->getMessage());
         }
 
         $this->loginService->login($user, 'oidc');

app/Auth/Access/RegistrationService.php

@@ -96,7 +96,8 @@ class RegistrationService
         }
 
         // Create the user
-        $newUser = $this->userRepo->registerNew($userData, $emailConfirmed);
+        $newUser = $this->userRepo->createWithoutActivity($userData, $emailConfirmed);
+        $newUser->attachDefaultRole();
 
         // Assign social account if given
         if ($socialAccount) {

app/Auth/Access/SocialAuthService.php

@@ -12,6 +12,7 @@ use Illuminate\Support\Str;
 use Laravel\Socialite\Contracts\Factory as Socialite;
 use Laravel\Socialite\Contracts\Provider;
 use Laravel\Socialite\Contracts\User as SocialUser;
+use Laravel\Socialite\Two\GoogleProvider;
 use SocialiteProviders\Manager\SocialiteWasCalled;
 use Symfony\Component\HttpFoundation\RedirectResponse;
 
@@ -278,7 +279,7 @@ class SocialAuthService
     {
         $driver = $this->socialite->driver($driverName);
 
-        if ($driverName === 'google' && config('services.google.select_account')) {
+        if ($driver instanceof GoogleProvider && config('services.google.select_account')) {
             $driver->with(['prompt' => 'select_account']);
         }
 

app/Auth/Permissions/PermissionService.php

@@ -602,25 +602,35 @@ class PermissionService
 
     /**
      * Filter items that have entities set as a polymorphic relation.
+     * For simplicity, this will not return results attached to draft pages.
+     * Draft pages should never really have related items though.
      *
      * @param Builder|QueryBuilder $query
      */
     public function filterRestrictedEntityRelations($query, string $tableName, string $entityIdColumn, string $entityTypeColumn, string $action = 'view')
     {
         $tableDetails = ['tableName' => $tableName, 'entityIdColumn' => $entityIdColumn, 'entityTypeColumn' => $entityTypeColumn];
+        $pageMorphClass = (new Page())->getMorphClass();
 
-        $q = $query->where(function ($query) use ($tableDetails, $action) {
-            $query->whereExists(function ($permissionQuery) use (&$tableDetails, $action) {
-                /** @var Builder $permissionQuery */
-                $permissionQuery->select(['role_id'])->from('joint_permissions')
-                    ->whereColumn('joint_permissions.entity_id', '=', $tableDetails['tableName'] . '.' . $tableDetails['entityIdColumn'])
-                    ->whereColumn('joint_permissions.entity_type', '=', $tableDetails['tableName'] . '.' . $tableDetails['entityTypeColumn'])
-                    ->where('action', '=', $action)
-                    ->whereIn('role_id', $this->getCurrentUserRoles())
-                    ->where(function (QueryBuilder $query) {
-                        $this->addJointHasPermissionCheck($query, $this->currentUser()->id);
-                    });
-            });
+        $q = $query->whereExists(function ($permissionQuery) use (&$tableDetails, $action) {
+            /** @var Builder $permissionQuery */
+            $permissionQuery->select(['role_id'])->from('joint_permissions')
+                ->whereColumn('joint_permissions.entity_id', '=', $tableDetails['tableName'] . '.' . $tableDetails['entityIdColumn'])
+                ->whereColumn('joint_permissions.entity_type', '=', $tableDetails['tableName'] . '.' . $tableDetails['entityTypeColumn'])
+                ->where('joint_permissions.action', '=', $action)
+                ->whereIn('joint_permissions.role_id', $this->getCurrentUserRoles())
+                ->where(function (QueryBuilder $query) {
+                    $this->addJointHasPermissionCheck($query, $this->currentUser()->id);
+                });
+        })->where(function ($query) use ($tableDetails, $pageMorphClass) {
+            /** @var Builder $query */
+            $query->where($tableDetails['entityTypeColumn'], '!=', $pageMorphClass)
+                ->orWhereExists(function (QueryBuilder $query) use ($tableDetails, $pageMorphClass) {
+                    $query->select('id')->from('pages')
+                        ->whereColumn('pages.id', '=', $tableDetails['tableName'] . '.' . $tableDetails['entityIdColumn'])
+                        ->where($tableDetails['tableName'] . '.' . $tableDetails['entityTypeColumn'], '=', $pageMorphClass)
+                        ->where('pages.draft', '=', false);
+                });
         });
 
         $this->clean();
@@ -634,25 +644,39 @@ class PermissionService
      */
     public function filterRelatedEntity(string $entityClass, Builder $query, string $tableName, string $entityIdColumn): Builder
     {
-        $tableDetails = ['tableName' => $tableName, 'entityIdColumn' => $entityIdColumn];
-        $morphClass = app($entityClass)->getMorphClass();
+        $fullEntityIdColumn = $tableName . '.' . $entityIdColumn;
+        $instance = new $entityClass();
+        $morphClass = $instance->getMorphClass();
 
-        $q = $query->where(function ($query) use ($tableDetails, $morphClass) {
-            $query->where(function ($query) use (&$tableDetails, $morphClass) {
-                $query->whereExists(function ($permissionQuery) use (&$tableDetails, $morphClass) {
-                    /** @var Builder $permissionQuery */
-                    $permissionQuery->select('id')->from('joint_permissions')
-                        ->whereColumn('joint_permissions.entity_id', '=', $tableDetails['tableName'] . '.' . $tableDetails['entityIdColumn'])
-                        ->where('entity_type', '=', $morphClass)
-                        ->where('action', '=', 'view')
-                        ->whereIn('role_id', $this->getCurrentUserRoles())
-                        ->where(function (QueryBuilder $query) {
-                            $this->addJointHasPermissionCheck($query, $this->currentUser()->id);
-                        });
+        $existsQuery = function ($permissionQuery) use ($fullEntityIdColumn, $morphClass) {
+            /** @var Builder $permissionQuery */
+            $permissionQuery->select('joint_permissions.role_id')->from('joint_permissions')
+                ->whereColumn('joint_permissions.entity_id', '=', $fullEntityIdColumn)
+                ->where('joint_permissions.entity_type', '=', $morphClass)
+                ->where('joint_permissions.action', '=', 'view')
+                ->whereIn('joint_permissions.role_id', $this->getCurrentUserRoles())
+                ->where(function (QueryBuilder $query) {
+                    $this->addJointHasPermissionCheck($query, $this->currentUser()->id);
                 });
-            })->orWhere($tableDetails['entityIdColumn'], '=', 0);
+        };
+
+        $q = $query->where(function ($query) use ($existsQuery, $fullEntityIdColumn) {
+            $query->whereExists($existsQuery)
+                ->orWhere($fullEntityIdColumn, '=', 0);
         });
 
+        if ($instance instanceof Page) {
+            // Prevent visibility of non-owned draft pages
+            $q->whereExists(function (QueryBuilder $query) use ($fullEntityIdColumn) {
+                $query->select('id')->from('pages')
+                    ->whereColumn('pages.id', '=', $fullEntityIdColumn)
+                    ->where(function (QueryBuilder $query) {
+                        $query->where('pages.draft', '=', false)
+                            ->orWhere('pages.owned_by', '=', $this->currentUser()->id);
+                    });
+            });
+        }
+
         $this->clean();
 
         return $q;
@@ -666,9 +690,9 @@ class PermissionService
      */
     protected function addJointHasPermissionCheck($query, int $userIdToCheck)
     {
-        $query->where('has_permission', '=', true)->orWhere(function ($query) use ($userIdToCheck) {
-            $query->where('has_permission_own', '=', true)
-                ->where('owned_by', '=', $userIdToCheck);
+        $query->where('joint_permissions.has_permission', '=', true)->orWhere(function ($query) use ($userIdToCheck) {
+            $query->where('joint_permissions.has_permission_own', '=', true)
+                ->where('joint_permissions.owned_by', '=', $userIdToCheck);
         });
     }
 

app/Auth/Permissions/RolePermission.php

@@ -4,6 +4,7 @@ namespace BookStack\Auth\Permissions;
 
 use BookStack\Auth\Role;
 use BookStack\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 
 /**
  * @property int $id
@@ -13,19 +14,15 @@ class RolePermission extends Model
     /**
      * The roles that belong to the permission.
      */
-    public function roles()
+    public function roles(): BelongsToMany
     {
         return $this->belongsToMany(Role::class, 'permission_role', 'permission_id', 'role_id');
     }
 
     /**
      * Get the permission object by name.
-     *
-     * @param $name
-     *
-     * @return mixed
      */
-    public static function getByName($name)
+    public static function getByName(string $name): ?RolePermission
     {
         return static::where('name', '=', $name)->first();
     }

app/Auth/Queries/AllUsersPaginatedAndSorted.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace BookStack\Auth\Queries;
+
+use BookStack\Auth\User;
+use Illuminate\Pagination\LengthAwarePaginator;
+
+/**
+ * Get all the users with their permissions in a paginated format.
+ * Note: Due to the use of email search this should only be used when
+ * user is assumed to be trusted. (Admin users).
+ * Email search can be abused to extract email addresses.
+ */
+class AllUsersPaginatedAndSorted
+{
+    /**
+     * @param array{sort: string, order: string, search: string} $sortData
+     */
+    public function run(int $count, array $sortData): LengthAwarePaginator
+    {
+        $sort = $sortData['sort'];
+
+        $query = User::query()->select(['*'])
+            ->scopes(['withLastActivityAt'])
+            ->with(['roles', 'avatar'])
+            ->withCount('mfaValues')
+            ->orderBy($sort, $sortData['order']);
+
+        if ($sortData['search']) {
+            $term = '%' . $sortData['search'] . '%';
+            $query->where(function ($query) use ($term) {
+                $query->where('name', 'like', $term)
+                    ->orWhere('email', 'like', $term);
+            });
+        }
+
+        return $query->paginate($count);
+    }
+}

app/Auth/Queries/UserContentCounts.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace BookStack\Auth\Queries;
+
+use BookStack\Auth\User;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Bookshelf;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Page;
+
+/**
+ * Get asset created counts for the given user.
+ */
+class UserContentCounts
+{
+    /**
+     * @return array{pages: int, chapters: int, books: int, shelves: int}
+     */
+    public function run(User $user): array
+    {
+        $createdBy = ['created_by' => $user->id];
+
+        return [
+            'pages'    => Page::visible()->where($createdBy)->count(),
+            'chapters' => Chapter::visible()->where($createdBy)->count(),
+            'books'    => Book::visible()->where($createdBy)->count(),
+            'shelves'  => Bookshelf::visible()->where($createdBy)->count(),
+        ];
+    }
+}

app/Auth/Queries/UserRecentlyCreatedContent.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace BookStack\Auth\Queries;
+
+use BookStack\Auth\User;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Bookshelf;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Page;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Collection;
+
+/**
+ * Get the recently created content for the provided user.
+ */
+class UserRecentlyCreatedContent
+{
+    /**
+     * @return array{pages: Collection, chapters: Collection, books: Collection, shelves: Collection}
+     */
+    public function run(User $user, int $count): array
+    {
+        $query = function (Builder $query) use ($user, $count) {
+            return $query->orderBy('created_at', 'desc')
+                ->where('created_by', '=', $user->id)
+                ->take($count)
+                ->get();
+        };
+
+        return [
+            'pages'    => $query(Page::visible()->where('draft', '=', false)),
+            'chapters' => $query(Chapter::visible()),
+            'books'    => $query(Book::visible()),
+            'shelves'  => $query(Bookshelf::visible()),
+        ];
+    }
+}

app/Auth/Role.php

@@ -28,6 +28,8 @@ class Role extends Model implements Loggable
 
     protected $fillable = ['display_name', 'description', 'external_auth_id'];
 
+    protected $hidden = ['pivot'];
+
     /**
      * The roles that belong to the role.
      */

app/Auth/User.php

@@ -72,22 +72,20 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
      */
     protected $hidden = [
         'password', 'remember_token', 'system_name', 'email_confirmed', 'external_auth_id', 'email',
-        'created_at', 'updated_at', 'image_id',
+        'created_at', 'updated_at', 'image_id', 'roles', 'avatar', 'user_id',
     ];
 
     /**
      * This holds the user's permissions when loaded.
-     *
-     * @var ?Collection
      */
-    protected $permissions;
+    protected ?Collection $permissions;
 
     /**
      * This holds the default user when loaded.
      *
      * @var null|User
      */
-    protected static $defaultUser = null;
+    protected static ?User $defaultUser = null;
 
     /**
      * Returns the default public user.
@@ -146,7 +144,7 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
      */
     public function attachDefaultRole(): void
     {
-        $roleId = setting('registration-role');
+        $roleId = intval(setting('registration-role'));
         if ($roleId && $this->roles()->where('id', '=', $roleId)->count() === 0) {
             $this->roles()->attach($roleId);
         }

app/Auth/UserRepo.php

@@ -2,31 +2,29 @@
 
 namespace BookStack\Auth;
 
-use Activity;
+use BookStack\Actions\ActivityType;
+use BookStack\Auth\Access\UserInviteService;
 use BookStack\Entities\EntityProvider;
-use BookStack\Entities\Models\Book;
-use BookStack\Entities\Models\Bookshelf;
-use BookStack\Entities\Models\Chapter;
-use BookStack\Entities\Models\Page;
-use BookStack\Exceptions\NotFoundException;
+use BookStack\Exceptions\NotifyException;
 use BookStack\Exceptions\UserUpdateException;
+use BookStack\Facades\Activity;
 use BookStack\Uploads\UserAvatars;
 use Exception;
-use Illuminate\Database\Eloquent\Builder;
-use Illuminate\Database\Eloquent\Collection;
-use Illuminate\Pagination\LengthAwarePaginator;
 use Illuminate\Support\Facades\Log;
+use Illuminate\Support\Str;
 
 class UserRepo
 {
-    protected $userAvatar;
+    protected UserAvatars $userAvatar;
+    protected UserInviteService $inviteService;
 
     /**
      * UserRepo constructor.
      */
-    public function __construct(UserAvatars $userAvatar)
+    public function __construct(UserAvatars $userAvatar, UserInviteService $inviteService)
     {
         $this->userAvatar = $userAvatar;
+        $this->inviteService = $inviteService;
     }
 
     /**
@@ -54,67 +52,164 @@ class UserRepo
     }
 
     /**
-     * Get all the users with their permissions.
+     * Create a new basic instance of user with the given pre-validated data.
+     *
+     * @param array{name: string, email: string, password: ?string, external_auth_id: ?string, language: ?string, roles: ?array} $data
      */
-    public function getAllUsers(): Collection
+    public function createWithoutActivity(array $data, bool $emailConfirmed = false): User
     {
-        return User::query()->with('roles', 'avatar')->orderBy('name', 'asc')->get();
-    }
+        $user = new User();
+        $user->name = $data['name'];
+        $user->email = $data['email'];
+        $user->password = bcrypt(empty($data['password']) ? Str::random(32) : $data['password']);
+        $user->email_confirmed = $emailConfirmed;
+        $user->external_auth_id = $data['external_auth_id'] ?? '';
 
-    /**
-     * Get all the users with their permissions in a paginated format.
-     */
-    public function getAllUsersPaginatedAndSorted(int $count, array $sortData): LengthAwarePaginator
-    {
-        $sort = $sortData['sort'];
+        $user->refreshSlug();
+        $user->save();
 
-        $query = User::query()->select(['*'])
-            ->withLastActivityAt()
-            ->with(['roles', 'avatar'])
-            ->withCount('mfaValues')
-            ->orderBy($sort, $sortData['order']);
-
-        if ($sortData['search']) {
-            $term = '%' . $sortData['search'] . '%';
-            $query->where(function ($query) use ($term) {
-                $query->where('name', 'like', $term)
-                    ->orWhere('email', 'like', $term);
-            });
+        if (!empty($data['language'])) {
+            setting()->putUser($user, 'language', $data['language']);
         }
 
-        return $query->paginate($count);
-    }
+        if (isset($data['roles'])) {
+            $this->setUserRoles($user, $data['roles']);
+        }
 
-    /**
-     * Creates a new user and attaches a role to them.
-     */
-    public function registerNew(array $data, bool $emailConfirmed = false): User
-    {
-        $user = $this->create($data, $emailConfirmed);
-        $user->attachDefaultRole();
         $this->downloadAndAssignUserAvatar($user);
 
         return $user;
     }
 
     /**
-     * Assign a user to a system-level role.
+     * As per "createWithoutActivity" but records a "create" activity.
      *
-     * @throws NotFoundException
+     * @param array{name: string, email: string, password: ?string, external_auth_id: ?string, language: ?string, roles: ?array} $data
      */
-    public function attachSystemRole(User $user, string $systemRoleName)
+    public function create(array $data, bool $sendInvite = false): User
     {
-        $role = Role::getSystemRole($systemRoleName);
-        if (is_null($role)) {
-            throw new NotFoundException("Role '{$systemRoleName}' not found");
+        $user = $this->createWithoutActivity($data, true);
+
+        if ($sendInvite) {
+            $this->inviteService->sendInvitation($user);
+        }
+
+        Activity::add(ActivityType::USER_CREATE, $user);
+
+        return $user;
+    }
+
+    /**
+     * Update the given user with the given data.
+     *
+     * @param array{name: ?string, email: ?string, external_auth_id: ?string, password: ?string, roles: ?array<int>, language: ?string} $data
+     *
+     * @throws UserUpdateException
+     */
+    public function update(User $user, array $data, bool $manageUsersAllowed): User
+    {
+        if (!empty($data['name'])) {
+            $user->name = $data['name'];
+            $user->refreshSlug();
+        }
+
+        if (!empty($data['email']) && $manageUsersAllowed) {
+            $user->email = $data['email'];
+        }
+
+        if (!empty($data['external_auth_id']) && $manageUsersAllowed) {
+            $user->external_auth_id = $data['external_auth_id'];
+        }
+
+        if (isset($data['roles']) && $manageUsersAllowed) {
+            $this->setUserRoles($user, $data['roles']);
+        }
+
+        if (!empty($data['password'])) {
+            $user->password = bcrypt($data['password']);
+        }
+
+        if (!empty($data['language'])) {
+            setting()->putUser($user, 'language', $data['language']);
+        }
+
+        $user->save();
+        Activity::add(ActivityType::USER_UPDATE, $user);
+
+        return $user;
+    }
+
+    /**
+     * Remove the given user from storage, Delete all related content.
+     *
+     * @throws Exception
+     */
+    public function destroy(User $user, ?int $newOwnerId = null)
+    {
+        $this->ensureDeletable($user);
+
+        $user->socialAccounts()->delete();
+        $user->apiTokens()->delete();
+        $user->favourites()->delete();
+        $user->mfaValues()->delete();
+        $user->delete();
+
+        // Delete user profile images
+        $this->userAvatar->destroyAllForUser($user);
+
+        if (!empty($newOwnerId)) {
+            $newOwner = User::query()->find($newOwnerId);
+            if (!is_null($newOwner)) {
+                $this->migrateOwnership($user, $newOwner);
+            }
+        }
+
+        Activity::add(ActivityType::USER_DELETE, $user);
+    }
+
+    /**
+     * @throws NotifyException
+     */
+    protected function ensureDeletable(User $user): void
+    {
+        if ($this->isOnlyAdmin($user)) {
+            throw new NotifyException(trans('errors.users_cannot_delete_only_admin'), $user->getEditUrl());
+        }
+
+        if ($user->system_name === 'public') {
+            throw new NotifyException(trans('errors.users_cannot_delete_guest'), $user->getEditUrl());
+        }
+    }
+
+    /**
+     * Migrate ownership of items in the system from one user to another.
+     */
+    protected function migrateOwnership(User $fromUser, User $toUser)
+    {
+        $entities = (new EntityProvider())->all();
+        foreach ($entities as $instance) {
+            $instance->newQuery()->where('owned_by', '=', $fromUser->id)
+                ->update(['owned_by' => $toUser->id]);
+        }
+    }
+
+    /**
+     * Get an avatar image for a user and set it as their avatar.
+     * Returns early if avatars disabled or not set in config.
+     */
+    protected function downloadAndAssignUserAvatar(User $user): void
+    {
+        try {
+            $this->userAvatar->fetchAndAssignToUser($user);
+        } catch (Exception $e) {
+            Log::error('Failed to save user avatar image');
         }
-        $user->attachRole($role);
     }
 
     /**
      * Checks if the give user is the only admin.
      */
-    public function isOnlyAdmin(User $user): bool
+    protected function isOnlyAdmin(User $user): bool
     {
         if (!$user->hasSystemRole('admin')) {
             return false;
@@ -133,7 +228,7 @@ class UserRepo
      *
      * @throws UserUpdateException
      */
-    public function setUserRoles(User $user, array $roles)
+    protected function setUserRoles(User $user, array $roles)
     {
         if ($this->demotingLastAdmin($user, $roles)) {
             throw new UserUpdateException(trans('errors.role_cannot_remove_only_admin'), $user->getEditUrl());
@@ -157,125 +252,4 @@ class UserRepo
 
         return false;
     }
-
-    /**
-     * Create a new basic instance of user.
-     */
-    public function create(array $data, bool $emailConfirmed = false): User
-    {
-        $details = [
-            'name'             => $data['name'],
-            'email'            => $data['email'],
-            'password'         => bcrypt($data['password']),
-            'email_confirmed'  => $emailConfirmed,
-            'external_auth_id' => $data['external_auth_id'] ?? '',
-        ];
-
-        $user = new User();
-        $user->forceFill($details);
-        $user->refreshSlug();
-        $user->save();
-
-        return $user;
-    }
-
-    /**
-     * Remove the given user from storage, Delete all related content.
-     *
-     * @throws Exception
-     */
-    public function destroy(User $user, ?int $newOwnerId = null)
-    {
-        $user->socialAccounts()->delete();
-        $user->apiTokens()->delete();
-        $user->favourites()->delete();
-        $user->mfaValues()->delete();
-        $user->delete();
-
-        // Delete user profile images
-        $this->userAvatar->destroyAllForUser($user);
-
-        if (!empty($newOwnerId)) {
-            $newOwner = User::query()->find($newOwnerId);
-            if (!is_null($newOwner)) {
-                $this->migrateOwnership($user, $newOwner);
-            }
-        }
-    }
-
-    /**
-     * Migrate ownership of items in the system from one user to another.
-     */
-    protected function migrateOwnership(User $fromUser, User $toUser)
-    {
-        $entities = (new EntityProvider())->all();
-        foreach ($entities as $instance) {
-            $instance->newQuery()->where('owned_by', '=', $fromUser->id)
-                ->update(['owned_by' => $toUser->id]);
-        }
-    }
-
-    /**
-     * Get the latest activity for a user.
-     */
-    public function getActivity(User $user, int $count = 20, int $page = 0): array
-    {
-        return Activity::userActivity($user, $count, $page);
-    }
-
-    /**
-     * Get the recently created content for this given user.
-     */
-    public function getRecentlyCreated(User $user, int $count = 20): array
-    {
-        $query = function (Builder $query) use ($user, $count) {
-            return $query->orderBy('created_at', 'desc')
-                ->where('created_by', '=', $user->id)
-                ->take($count)
-                ->get();
-        };
-
-        return [
-            'pages'    => $query(Page::visible()->where('draft', '=', false)),
-            'chapters' => $query(Chapter::visible()),
-            'books'    => $query(Book::visible()),
-            'shelves'  => $query(Bookshelf::visible()),
-        ];
-    }
-
-    /**
-     * Get asset created counts for the give user.
-     */
-    public function getAssetCounts(User $user): array
-    {
-        $createdBy = ['created_by' => $user->id];
-
-        return [
-            'pages'       => Page::visible()->where($createdBy)->count(),
-            'chapters'    => Chapter::visible()->where($createdBy)->count(),
-            'books'       => Book::visible()->where($createdBy)->count(),
-            'shelves'     => Bookshelf::visible()->where($createdBy)->count(),
-        ];
-    }
-
-    /**
-     * Get the roles in the system that are assignable to a user.
-     */
-    public function getAllRoles(): Collection
-    {
-        return Role::query()->orderBy('display_name', 'asc')->get();
-    }
-
-    /**
-     * Get an avatar image for a user and set it as their avatar.
-     * Returns early if avatars disabled or not set in config.
-     */
-    public function downloadAndAssignUserAvatar(User $user): void
-    {
-        try {
-            $this->userAvatar->fetchAndAssignToUser($user);
-        } catch (Exception $e) {
-            Log::error('Failed to save user avatar image');
-        }
-    }
 }

app/Config/app.php

@@ -57,6 +57,13 @@ return [
     // Space separated if multiple. BookStack host domain is auto-inferred.
     'iframe_hosts' => env('ALLOWED_IFRAME_HOSTS', null),
 
+    // A list of sources/hostnames that can be loaded within iframes within BookStack.
+    // Space separated if multiple. BookStack host domain is auto-inferred.
+    // Can be set to a lone "*" to allow all sources for iframe content (Not advised).
+    // Defaults to a set of common services.
+    // Current host and source for the "DRAWIO" setting will be auto-appended to the sources configured.
+    'iframe_sources' => env('ALLOWED_IFRAME_SOURCES', 'https://*.draw.io https://*.youtube.com https://*.youtube-nocookie.com https://*.vimeo.com'),
+
     // Application timezone for back-end date functions.
     'timezone' => env('APP_TIMEZONE', 'UTC'),
 
@@ -64,7 +71,7 @@ return [
     'locale' => env('APP_LANG', 'en'),
 
     // Locales available
-    'locales' => ['en', 'ar', 'bg', 'bs', 'ca', 'cs', 'da', 'de', 'de_informal', 'es', 'es_AR', 'et', 'fa', 'fr', 'he', 'hr', 'hu', 'id', 'it', 'ja', 'ko', 'lt', 'lv', 'nl', 'nb', 'pt', 'pt_BR', 'sk', 'sl', 'sv', 'pl',  'ru', 'th', 'tr', 'uk', 'vi', 'zh_CN', 'zh_TW'],
+    'locales' => ['en', 'ar', 'bg', 'bs', 'ca', 'cs', 'cy', 'da', 'de', 'de_informal', 'es', 'es_AR', 'et', 'eu', 'fa', 'fr', 'he', 'hr', 'hu', 'id', 'it', 'ja', 'ko', 'lt', 'lv', 'nl', 'nb', 'pt', 'pt_BR', 'sk', 'sl', 'sv', 'pl',  'ru', 'th', 'tr', 'uk', 'uz', 'vi', 'zh_CN', 'zh_TW'],
 
     //  Application Fallback Locale
     'fallback_locale' => 'en',

app/Config/auth.php

@@ -13,6 +13,10 @@ return [
     // Options: standard, ldap, saml2, oidc
     'method' => env('AUTH_METHOD', 'standard'),
 
+    // Automatically initiate login via external auth system if it's the sole auth method.
+    // Works with saml2 or oidc auth methods.
+    'auto_initiate' => env('AUTH_AUTO_INITIATE', false),
+
     // Authentication Defaults
     // This option controls the default authentication "guard" and password
     // reset options for your application.

app/Config/dompdf.php

@@ -7,6 +7,10 @@
  * Configuration should be altered via the `.env` file or environment variables.
  * Do not edit this file unless you're happy to maintain any changes yourself.
  */
+$dompdfPaperSizeMap = [
+    'a4'     => 'a4',
+    'letter' => 'letter',
+];
 
 return [
 
@@ -150,7 +154,7 @@ return [
          *
          * @see CPDF_Adapter::PAPER_SIZES for valid sizes ('letter', 'legal', 'A4', etc.)
          */
-        'default_paper_size' => 'a4',
+        'default_paper_size' => $dompdfPaperSizeMap[env('EXPORT_PAGE_SIZE', 'a4')] ?? 'a4',
 
         /**
          * The default font family.

app/Config/queue.php

@@ -11,7 +11,7 @@
 return [
 
     // Default driver to use for the queue
-    // Options: null, sync, redis
+    // Options: sync, database, redis
     'default' => env('QUEUE_CONNECTION', 'sync'),
 
     // Queue connection configuration

app/Config/services.php

@@ -119,6 +119,7 @@ return [
     'ldap' => [
         'server'                 => env('LDAP_SERVER', false),
         'dump_user_details'      => env('LDAP_DUMP_USER_DETAILS', false),
+        'dump_user_groups'       => env('LDAP_DUMP_USER_GROUPS', false),
         'dn'                     => env('LDAP_DN', false),
         'pass'                   => env('LDAP_PASS', false),
         'base_dn'                => env('LDAP_BASE_DN', false),

app/Config/session.php

@@ -72,7 +72,7 @@ return [
     // to the server if the browser has a HTTPS connection. This will keep
     // the cookie from being sent to you if it can not be done securely.
     'secure' => env('SESSION_SECURE_COOKIE', null)
-        ?? Str::startsWith(env('APP_URL'), 'https:'),
+        ?? Str::startsWith(env('APP_URL', ''), 'https:'),
 
     // HTTP Access Only
     // Setting this value to true will prevent JavaScript from accessing the

app/Config/snappy.php

@@ -7,6 +7,10 @@
  * Configuration should be altered via the `.env` file or environment variables.
  * Do not edit this file unless you're happy to maintain any changes yourself.
  */
+$snappyPaperSizeMap = [
+    'a4'     => 'A4',
+    'letter' => 'Letter',
+];
 
 return [
     'pdf' => [
@@ -14,7 +18,8 @@ return [
         'binary'  => file_exists(base_path('wkhtmltopdf')) ? base_path('wkhtmltopdf') : env('WKHTMLTOPDF', false),
         'timeout' => false,
         'options' => [
-            'outline' => true,
+            'outline'   => true,
+            'page-size' => $snappyPaperSizeMap[env('EXPORT_PAGE_SIZE', 'a4')] ?? 'A4',
         ],
         'env'     => [],
     ],

app/Console/Commands/CreateAdmin.php

@@ -2,8 +2,14 @@
 
 namespace BookStack\Console\Commands;
 
+use BookStack\Auth\Role;
 use BookStack\Auth\UserRepo;
+use BookStack\Exceptions\NotFoundException;
 use Illuminate\Console\Command;
+use Illuminate\Support\Facades\Validator;
+use Illuminate\Support\Str;
+use Illuminate\Validation\Rules\Password;
+use Illuminate\Validation\Rules\Unique;
 use Symfony\Component\Console\Command\Command as SymfonyCommand;
 
 class CreateAdmin extends Command
@@ -16,7 +22,8 @@ class CreateAdmin extends Command
     protected $signature = 'bookstack:create-admin
                             {--email= : The email address for the new admin user}
                             {--name= : The name of the new admin user}
-                            {--password= : The password to assign to the new admin user}';
+                            {--password= : The password to assign to the new admin user}
+                            {--external-auth-id= : The external authentication system id for the new admin user (SAML2/LDAP/OIDC)}';
 
     /**
      * The console command description.
@@ -39,51 +46,47 @@ class CreateAdmin extends Command
     /**
      * Execute the console command.
      *
-     * @throws \BookStack\Exceptions\NotFoundException
+     * @throws NotFoundException
      *
      * @return mixed
      */
     public function handle()
     {
-        $email = trim($this->option('email'));
-        if (empty($email)) {
-            $email = $this->ask('Please specify an email address for the new admin user');
+        $details = $this->snakeCaseOptions();
+
+        if (empty($details['email'])) {
+            $details['email'] = $this->ask('Please specify an email address for the new admin user');
         }
-        if (mb_strlen($email) < 5 || !filter_var($email, FILTER_VALIDATE_EMAIL)) {
-            $this->error('Invalid email address provided');
+
+        if (empty($details['name'])) {
+            $details['name'] = $this->ask('Please specify a name for the new admin user');
+        }
+
+        if (empty($details['password'])) {
+            if (empty($details['external_auth_id'])) {
+                $details['password'] = $this->ask('Please specify a password for the new admin user (8 characters min)');
+            } else {
+                $details['password'] = Str::random(32);
+            }
+        }
+
+        $validator = Validator::make($details, [
+            'email'            => ['required', 'email', 'min:5', new Unique('users', 'email')],
+            'name'             => ['required', 'min:2'],
+            'password'         => ['required_without:external_auth_id', Password::default()],
+            'external_auth_id' => ['required_without:password'],
+        ]);
+
+        if ($validator->fails()) {
+            foreach ($validator->errors()->all() as $error) {
+                $this->error($error);
+            }
 
             return SymfonyCommand::FAILURE;
         }
 
-        if ($this->userRepo->getByEmail($email) !== null) {
-            $this->error('A user with the provided email already exists!');
-
-            return SymfonyCommand::FAILURE;
-        }
-
-        $name = trim($this->option('name'));
-        if (empty($name)) {
-            $name = $this->ask('Please specify an name for the new admin user');
-        }
-        if (mb_strlen($name) < 2) {
-            $this->error('Invalid name provided');
-
-            return SymfonyCommand::FAILURE;
-        }
-
-        $password = trim($this->option('password'));
-        if (empty($password)) {
-            $password = $this->secret('Please specify a password for the new admin user');
-        }
-        if (mb_strlen($password) < 5) {
-            $this->error('Invalid password provided, Must be at least 5 characters');
-
-            return SymfonyCommand::FAILURE;
-        }
-
-        $user = $this->userRepo->create(['email' => $email, 'name' => $name, 'password' => $password]);
-        $this->userRepo->attachSystemRole($user, 'admin');
-        $this->userRepo->downloadAndAssignUserAvatar($user);
+        $user = $this->userRepo->createWithoutActivity($validator->validated());
+        $user->attachRole(Role::getSystemRole('admin'));
         $user->email_confirmed = true;
         $user->save();
 
@@ -91,4 +94,14 @@ class CreateAdmin extends Command
 
         return SymfonyCommand::SUCCESS;
     }
+
+    protected function snakeCaseOptions(): array
+    {
+        $returnOpts = [];
+        foreach ($this->options() as $key => $value) {
+            $returnOpts[str_replace('-', '_', $key)] = $value;
+        }
+
+        return $returnOpts;
+    }
 }

app/Console/Commands/DeleteUsers.php

@@ -15,8 +15,6 @@ class DeleteUsers extends Command
      */
     protected $signature = 'bookstack:delete-users';
 
-    protected $user;
-
     protected $userRepo;
 
     /**
@@ -26,9 +24,8 @@ class DeleteUsers extends Command
      */
     protected $description = 'Delete users that are not "admin" or system users';
 
-    public function __construct(User $user, UserRepo $userRepo)
+    public function __construct(UserRepo $userRepo)
     {
-        $this->user = $user;
         $this->userRepo = $userRepo;
         parent::__construct();
     }
@@ -38,8 +35,8 @@ class DeleteUsers extends Command
         $confirm = $this->ask('This will delete all users from the system that are not "admin" or system users. Are you sure you want to continue? (Type "yes" to continue)');
         $numDeleted = 0;
         if (strtolower(trim($confirm)) === 'yes') {
-            $totalUsers = $this->user->count();
-            $users = $this->user->where('system_name', '=', null)->with('roles')->get();
+            $totalUsers = User::query()->count();
+            $users = User::query()->whereNull('system_name')->with('roles')->get();
             foreach ($users as $user) {
                 if ($user->hasSystemRole('admin')) {
                     // don't delete users with "admin" role

app/Console/Commands/RegenerateSearch.php

@@ -49,7 +49,7 @@ class RegenerateSearch extends Command
             DB::setDefaultConnection($this->option('database'));
         }
 
-        $this->searchIndex->indexAllEntities(function (Entity $model, int $processed, int $total) {
+        $this->searchIndex->indexAllEntities(function (Entity $model, int $processed, int $total): void {
             $this->info('Indexed ' . class_basename($model) . ' entries (' . $processed . '/' . $total . ')');
         });
 

app/Entities/Models/Book.php

@@ -79,53 +79,43 @@ class Book extends Entity implements HasCoverImage
 
     /**
      * Get all pages within this book.
-     *
-     * @return HasMany
      */
-    public function pages()
+    public function pages(): HasMany
     {
         return $this->hasMany(Page::class);
     }
 
     /**
      * Get the direct child pages of this book.
-     *
-     * @return HasMany
      */
-    public function directPages()
+    public function directPages(): HasMany
     {
         return $this->pages()->where('chapter_id', '=', '0');
     }
 
     /**
      * Get all chapters within this book.
-     *
-     * @return HasMany
      */
-    public function chapters()
+    public function chapters(): HasMany
     {
         return $this->hasMany(Chapter::class);
     }
 
     /**
      * Get the shelves this book is contained within.
-     *
-     * @return BelongsToMany
      */
-    public function shelves()
+    public function shelves(): BelongsToMany
     {
         return $this->belongsToMany(Bookshelf::class, 'bookshelves_books', 'book_id', 'bookshelf_id');
     }
 
     /**
      * Get the direct child items within this book.
-     *
-     * @return Collection
      */
     public function getDirectChildren(): Collection
     {
-        $pages = $this->directPages()->visible()->get();
-        $chapters = $this->chapters()->visible()->get();
+        $pages = $this->directPages()->scopes('visible')->get();
+        $chapters = $this->chapters()->scopes('visible')->get();
 
         return $pages->concat($chapters)->sortBy('priority')->sortByDesc('draft');
     }

app/Entities/Models/Bookshelf.php

@@ -37,7 +37,7 @@ class Bookshelf extends Entity implements HasCoverImage
      */
     public function visibleBooks(): BelongsToMany
     {
-        return $this->books()->visible();
+        return $this->books()->scopes('visible');
     }
 
     /**

app/Entities/Models/Chapter.php

@@ -18,11 +18,13 @@ class Chapter extends BookChild
 
     public $searchFactor = 1.2;
 
-    protected $fillable = ['name', 'description', 'priority', 'book_id'];
+    protected $fillable = ['name', 'description', 'priority'];
     protected $hidden = ['restricted', 'pivot', 'deleted_at'];
 
     /**
      * Get the pages that this chapter contains.
+     *
+     * @return HasMany<Page>
      */
     public function pages(string $dir = 'ASC'): HasMany
     {
@@ -50,7 +52,8 @@ class Chapter extends BookChild
      */
     public function getVisiblePages(): Collection
     {
-        return $this->pages()->visible()
+        return $this->pages()
+        ->scopes('visible')
         ->orderBy('draft', 'desc')
         ->orderBy('priority', 'asc')
         ->get();

app/Entities/Models/Deletion.php

@@ -3,16 +3,23 @@
 namespace BookStack\Entities\Models;
 
 use BookStack\Auth\User;
+use BookStack\Interfaces\Deletable;
 use BookStack\Interfaces\Loggable;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\MorphTo;
 
 /**
- * @property Model $deletable
+ * @property int       $id
+ * @property int       $deleted_by
+ * @property string    $deletable_type
+ * @property int       $deletable_id
+ * @property Deletable $deletable
  */
 class Deletion extends Model implements Loggable
 {
+    protected $hidden = [];
+
     /**
      * Get the related deletable record.
      */
@@ -58,7 +65,7 @@ class Deletion extends Model implements Loggable
     /**
      * Get a URL for this specific deletion.
      */
-    public function getUrl($path): string
+    public function getUrl(string $path = 'restore'): string
     {
         return url("/settings/recycle-bin/{$this->id}/" . ltrim($path, '/'));
     }

app/Entities/Models/Entity.php

@@ -12,7 +12,9 @@ use BookStack\Auth\Permissions\JointPermission;
 use BookStack\Entities\Tools\SearchIndex;
 use BookStack\Entities\Tools\SlugGenerator;
 use BookStack\Facades\Permissions;
+use BookStack\Interfaces\Deletable;
 use BookStack\Interfaces\Favouritable;
+use BookStack\Interfaces\Loggable;
 use BookStack\Interfaces\Sluggable;
 use BookStack\Interfaces\Viewable;
 use BookStack\Model;
@@ -34,6 +36,7 @@ use Illuminate\Database\Eloquent\SoftDeletes;
  * @property string     $slug
  * @property Carbon     $created_at
  * @property Carbon     $updated_at
+ * @property Carbon     $deleted_at
  * @property int        $created_by
  * @property int        $updated_by
  * @property bool       $restricted
@@ -44,7 +47,7 @@ use Illuminate\Database\Eloquent\SoftDeletes;
  * @method static Builder withLastView()
  * @method static Builder withViewCount()
  */
-abstract class Entity extends Model implements Sluggable, Favouritable, Viewable
+abstract class Entity extends Model implements Sluggable, Favouritable, Viewable, Deletable, Loggable
 {
     use SoftDeletes;
     use HasCreatorAndUpdater;
@@ -120,11 +123,11 @@ abstract class Entity extends Model implements Sluggable, Favouritable, Viewable
             return true;
         }
 
-        if (($entity->isA('chapter') || $entity->isA('page')) && $this->isA('book')) {
+        if (($entity instanceof BookChild) && $this instanceof Book) {
             return $entity->book_id === $this->id;
         }
 
-        if ($entity->isA('page') && $this->isA('chapter')) {
+        if ($entity instanceof Page && $this instanceof Chapter) {
             return $entity->chapter_id === $this->id;
         }
 
@@ -210,6 +213,8 @@ abstract class Entity extends Model implements Sluggable, Favouritable, Viewable
     /**
      * Check if this instance or class is a certain type of entity.
      * Examples of $type are 'page', 'book', 'chapter'.
+     *
+     * @deprecated Use instanceof instead.
      */
     public static function isA(string $type): bool
     {
@@ -318,4 +323,12 @@ abstract class Entity extends Model implements Sluggable, Favouritable, Viewable
             ->where('user_id', '=', user()->id)
             ->exists();
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function logDescriptor(): string
+    {
+        return "({$this->id}) {$this->name}";
+    }
 }

app/Entities/Models/Page.php

@@ -10,19 +10,23 @@ use Illuminate\Database\Eloquent\Collection;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
 
 /**
  * Class Page.
  *
- * @property int        $chapter_id
- * @property string     $html
- * @property string     $markdown
- * @property string     $text
- * @property bool       $template
- * @property bool       $draft
- * @property int        $revision_count
- * @property Chapter    $chapter
- * @property Collection $attachments
+ * @property int          $chapter_id
+ * @property string       $html
+ * @property string       $markdown
+ * @property string       $text
+ * @property bool         $template
+ * @property bool         $draft
+ * @property int          $revision_count
+ * @property string       $editor
+ * @property Chapter      $chapter
+ * @property Collection   $attachments
+ * @property Collection   $revisions
+ * @property PageRevision $currentRevision
  */
 class Page extends BookChild
 {
@@ -82,6 +86,19 @@ class Page extends BookChild
             ->orderBy('id', 'desc');
     }
 
+    /**
+     * Get the current revision for the page if existing.
+     *
+     * @return PageRevision|null
+     */
+    public function currentRevision(): HasOne
+    {
+        return $this->hasOne(PageRevision::class)
+            ->where('type', '=', 'version')
+            ->orderBy('created_at', 'desc')
+            ->orderBy('id', 'desc');
+    }
+
     /**
      * Get all revision instances assigned to this page.
      * Includes all types of revisions.
@@ -117,16 +134,6 @@ class Page extends BookChild
         return url('/' . implode('/', $parts));
     }
 
-    /**
-     * Get the current revision for the page if existing.
-     *
-     * @return PageRevision|null
-     */
-    public function getCurrentRevision()
-    {
-        return $this->revisions()->first();
-    }
-
     /**
      * Get this page for JSON display.
      */

app/Entities/Models/PageRevision.php

@@ -10,7 +10,9 @@ use Illuminate\Database\Eloquent\Relations\BelongsTo;
 /**
  * Class PageRevision.
  *
+ * @property mixed  $id
  * @property int    $page_id
+ * @property string $name
  * @property string $slug
  * @property string $book_slug
  * @property int    $created_by
@@ -20,13 +22,15 @@ use Illuminate\Database\Eloquent\Relations\BelongsTo;
  * @property string $summary
  * @property string $markdown
  * @property string $html
+ * @property string $text
  * @property int    $revision_number
  * @property Page   $page
  * @property-read ?User $createdBy
  */
 class PageRevision extends Model
 {
-    protected $fillable = ['name', 'html', 'text', 'markdown', 'summary'];
+    protected $fillable = ['name', 'text', 'summary'];
+    protected $hidden = ['html', 'markdown', 'restricted', 'text'];
 
     /**
      * Get the user that created the page revision.
@@ -46,27 +50,16 @@ class PageRevision extends Model
 
     /**
      * Get the url for this revision.
-     *
-     * @param null|string $path
-     *
-     * @return string
      */
-    public function getUrl($path = null)
+    public function getUrl(string $path = ''): string
     {
-        $url = $this->page->getUrl() . '/revisions/' . $this->id;
-        if ($path) {
-            return $url . '/' . trim($path, '/');
-        }
-
-        return $url;
+        return $this->page->getUrl('/revisions/' . $this->id . '/' . ltrim($path, '/'));
     }
 
     /**
      * Get the previous revision for the same page if existing.
-     *
-     * @return \BookStack\Entities\PageRevision|null
      */
-    public function getPrevious()
+    public function getPrevious(): ?PageRevision
     {
         $id = static::newQuery()->where('page_id', '=', $this->page_id)
             ->where('id', '<', $this->id)
@@ -84,11 +77,9 @@ class PageRevision extends Model
      * Included here to align with entities in similar use cases.
      * (Yup, Bit of an awkward hack).
      *
-     * @param $type
-     *
-     * @return bool
+     * @deprecated Use instanceof instead.
      */
-    public static function isA($type)
+    public static function isA(string $type): bool
     {
         return $type === 'revision';
     }

app/Entities/Repos/BaseRepo.php

@@ -11,8 +11,8 @@ use Illuminate\Http\UploadedFile;
 
 class BaseRepo
 {
-    protected $tagRepo;
-    protected $imageRepo;
+    protected TagRepo $tagRepo;
+    protected ImageRepo $imageRepo;
 
     public function __construct(TagRepo $tagRepo, ImageRepo $imageRepo)
     {
@@ -58,6 +58,7 @@ class BaseRepo
 
         if (isset($input['tags'])) {
             $this->tagRepo->saveTagsToEntity($entity, $input['tags']);
+            $entity->touch();
         }
 
         $entity->rebuildPermissions();
@@ -67,10 +68,12 @@ class BaseRepo
     /**
      * Update the given items' cover image, or clear it.
      *
+     * @param Entity&HasCoverImage $entity
+     *
      * @throws ImageUploadException
      * @throws \Exception
      */
-    public function updateCoverImage(HasCoverImage $entity, ?UploadedFile $coverImage, bool $removeImage = false)
+    public function updateCoverImage($entity, ?UploadedFile $coverImage, bool $removeImage = false)
     {
         if ($coverImage) {
             $this->imageRepo->destroyImage($entity->cover);

app/Entities/Repos/BookRepo.php

@@ -91,7 +91,8 @@ class BookRepo
     {
         $book = new Book();
         $this->baseRepo->create($book, $input);
-        Activity::addForEntity($book, ActivityType::BOOK_CREATE);
+        $this->baseRepo->updateCoverImage($book, $input['image'] ?? null);
+        Activity::add(ActivityType::BOOK_CREATE, $book);
 
         return $book;
     }
@@ -102,7 +103,12 @@ class BookRepo
     public function update(Book $book, array $input): Book
     {
         $this->baseRepo->update($book, $input);
-        Activity::addForEntity($book, ActivityType::BOOK_UPDATE);
+
+        if (array_key_exists('image', $input)) {
+            $this->baseRepo->updateCoverImage($book, $input['image'], $input['image'] === null);
+        }
+
+        Activity::add(ActivityType::BOOK_UPDATE, $book);
 
         return $book;
     }
@@ -127,7 +133,7 @@ class BookRepo
     {
         $trashCan = new TrashCan();
         $trashCan->softDestroyBook($book);
-        Activity::addForEntity($book, ActivityType::BOOK_DELETE);
+        Activity::add(ActivityType::BOOK_DELETE, $book);
 
         $trashCan->autoClearOld();
     }

app/Entities/Repos/BookshelfRepo.php

@@ -6,12 +6,10 @@ use BookStack\Actions\ActivityType;
 use BookStack\Entities\Models\Book;
 use BookStack\Entities\Models\Bookshelf;
 use BookStack\Entities\Tools\TrashCan;
-use BookStack\Exceptions\ImageUploadException;
 use BookStack\Exceptions\NotFoundException;
 use BookStack\Facades\Activity;
 use Exception;
 use Illuminate\Contracts\Pagination\LengthAwarePaginator;
-use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Collection;
 
 class BookshelfRepo
@@ -89,8 +87,9 @@ class BookshelfRepo
     {
         $shelf = new Bookshelf();
         $this->baseRepo->create($shelf, $input);
+        $this->baseRepo->updateCoverImage($shelf, $input['image'] ?? null);
         $this->updateBooks($shelf, $bookIds);
-        Activity::addForEntity($shelf, ActivityType::BOOKSHELF_CREATE);
+        Activity::add(ActivityType::BOOKSHELF_CREATE, $shelf);
 
         return $shelf;
     }
@@ -106,14 +105,17 @@ class BookshelfRepo
             $this->updateBooks($shelf, $bookIds);
         }
 
-        Activity::addForEntity($shelf, ActivityType::BOOKSHELF_UPDATE);
+        if (array_key_exists('image', $input)) {
+            $this->baseRepo->updateCoverImage($shelf, $input['image'], $input['image'] === null);
+        }
+
+        Activity::add(ActivityType::BOOKSHELF_UPDATE, $shelf);
 
         return $shelf;
     }
 
     /**
-     * Update which books are assigned to this shelf by
-     * syncing the given book ids.
+     * Update which books are assigned to this shelf by syncing the given book ids.
      * Function ensures the books are visible to the current user and existing.
      */
     protected function updateBooks(Bookshelf $shelf, array $bookIds)
@@ -132,17 +134,6 @@ class BookshelfRepo
         $shelf->books()->sync($syncData);
     }
 
-    /**
-     * Update the given shelf cover image, or clear it.
-     *
-     * @throws ImageUploadException
-     * @throws Exception
-     */
-    public function updateCoverImage(Bookshelf $shelf, ?UploadedFile $coverImage, bool $removeImage = false)
-    {
-        $this->baseRepo->updateCoverImage($shelf, $coverImage, $removeImage);
-    }
-
     /**
      * Copy down the permissions of the given shelf to all child books.
      */
@@ -177,7 +168,7 @@ class BookshelfRepo
     {
         $trashCan = new TrashCan();
         $trashCan->softDestroyShelf($shelf);
-        Activity::addForEntity($shelf, ActivityType::BOOKSHELF_DELETE);
+        Activity::add(ActivityType::BOOKSHELF_DELETE, $shelf);
         $trashCan->autoClearOld();
     }
 }

app/Entities/Repos/ChapterRepo.php

@@ -5,10 +5,12 @@ namespace BookStack\Entities\Repos;
 use BookStack\Actions\ActivityType;
 use BookStack\Entities\Models\Book;
 use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Entity;
 use BookStack\Entities\Tools\BookContents;
 use BookStack\Entities\Tools\TrashCan;
 use BookStack\Exceptions\MoveOperationException;
 use BookStack\Exceptions\NotFoundException;
+use BookStack\Exceptions\PermissionsException;
 use BookStack\Facades\Activity;
 use Exception;
 
@@ -49,7 +51,7 @@ class ChapterRepo
         $chapter->book_id = $parentBook->id;
         $chapter->priority = (new BookContents($parentBook))->getLastPriority() + 1;
         $this->baseRepo->create($chapter, $input);
-        Activity::addForEntity($chapter, ActivityType::CHAPTER_CREATE);
+        Activity::add(ActivityType::CHAPTER_CREATE, $chapter);
 
         return $chapter;
     }
@@ -60,7 +62,7 @@ class ChapterRepo
     public function update(Chapter $chapter, array $input): Chapter
     {
         $this->baseRepo->update($chapter, $input);
-        Activity::addForEntity($chapter, ActivityType::CHAPTER_UPDATE);
+        Activity::add(ActivityType::CHAPTER_UPDATE, $chapter);
 
         return $chapter;
     }
@@ -74,7 +76,7 @@ class ChapterRepo
     {
         $trashCan = new TrashCan();
         $trashCan->softDestroyChapter($chapter);
-        Activity::addForEntity($chapter, ActivityType::CHAPTER_DELETE);
+        Activity::add(ActivityType::CHAPTER_DELETE, $chapter);
         $trashCan->autoClearOld();
     }
 
@@ -84,27 +86,43 @@ class ChapterRepo
      * 'book:<id>' (book:5).
      *
      * @throws MoveOperationException
+     * @throws PermissionsException
      */
     public function move(Chapter $chapter, string $parentIdentifier): Book
     {
-        $stringExploded = explode(':', $parentIdentifier);
-        $entityType = $stringExploded[0];
-        $entityId = intval($stringExploded[1]);
-
-        if ($entityType !== 'book') {
-            throw new MoveOperationException('Chapters can only be moved into books');
+        $parent = $this->findParentByIdentifier($parentIdentifier);
+        if (is_null($parent)) {
+            throw new MoveOperationException('Book to move chapter into not found');
         }
 
-        /** @var Book $parent */
-        $parent = Book::visible()->where('id', '=', $entityId)->first();
-        if ($parent === null) {
-            throw new MoveOperationException('Book to move chapter into not found');
+        if (!userCan('chapter-create', $parent)) {
+            throw new PermissionsException('User does not have permission to create a chapter within the chosen book');
         }
 
         $chapter->changeBook($parent->id);
         $chapter->rebuildPermissions();
-        Activity::addForEntity($chapter, ActivityType::CHAPTER_MOVE);
+        Activity::add(ActivityType::CHAPTER_MOVE, $chapter);
 
         return $parent;
     }
+
+    /**
+     * Find a page parent entity via an identifier string in the format:
+     * {type}:{id}
+     * Example: (book:5).
+     *
+     * @throws MoveOperationException
+     */
+    public function findParentByIdentifier(string $identifier): ?Book
+    {
+        $stringExploded = explode(':', $identifier);
+        $entityType = $stringExploded[0];
+        $entityId = intval($stringExploded[1]);
+
+        if ($entityType !== 'book') {
+            throw new MoveOperationException('Chapters can only be in books');
+        }
+
+        return Book::visible()->where('id', '=', $entityId)->first();
+    }
 }

app/Entities/Repos/DeletionRepo.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace BookStack\Entities\Repos;
+
+use BookStack\Actions\ActivityType;
+use BookStack\Entities\Models\Deletion;
+use BookStack\Entities\Tools\TrashCan;
+use BookStack\Facades\Activity;
+
+class DeletionRepo
+{
+    private TrashCan $trashCan;
+
+    public function __construct(TrashCan $trashCan)
+    {
+        $this->trashCan = $trashCan;
+    }
+
+    public function restore(int $id): int
+    {
+        /** @var Deletion $deletion */
+        $deletion = Deletion::query()->findOrFail($id);
+        Activity::add(ActivityType::RECYCLE_BIN_RESTORE, $deletion);
+
+        return $this->trashCan->restoreFromDeletion($deletion);
+    }
+
+    public function destroy(int $id): int
+    {
+        /** @var Deletion $deletion */
+        $deletion = Deletion::query()->findOrFail($id);
+        Activity::add(ActivityType::RECYCLE_BIN_DESTROY, $deletion);
+
+        return $this->trashCan->destroyFromDeletion($deletion);
+    }
+}

app/Entities/Repos/PageRepo.php

@@ -10,6 +10,7 @@ use BookStack\Entities\Models\Page;
 use BookStack\Entities\Models\PageRevision;
 use BookStack\Entities\Tools\BookContents;
 use BookStack\Entities\Tools\PageContent;
+use BookStack\Entities\Tools\PageEditorData;
 use BookStack\Entities\Tools\TrashCan;
 use BookStack\Exceptions\MoveOperationException;
 use BookStack\Exceptions\NotFoundException;
@@ -69,9 +70,10 @@ class PageRepo
      */
     public function getByOldSlug(string $bookSlug, string $pageSlug): ?Page
     {
+        /** @var ?PageRevision $revision */
         $revision = PageRevision::query()
             ->whereHas('page', function (Builder $query) {
-                $query->visible();
+                $query->scopes('visible');
             })
             ->where('slug', '=', $pageSlug)
             ->where('type', '=', 'version')
@@ -80,7 +82,7 @@ class PageRepo
             ->with('page')
             ->first();
 
-        return $revision ? $revision->page : null;
+        return $revision->page ?? null;
     }
 
     /**
@@ -170,7 +172,7 @@ class PageRepo
         $draft->indexForSearch();
         $draft->refresh();
 
-        Activity::addForEntity($draft, ActivityType::PAGE_CREATE);
+        Activity::add(ActivityType::PAGE_CREATE, $draft);
 
         return $draft;
     }
@@ -204,7 +206,7 @@ class PageRepo
             $this->savePageRevision($page, $summary);
         }
 
-        Activity::addForEntity($page, ActivityType::PAGE_UPDATE);
+        Activity::add(ActivityType::PAGE_UPDATE, $page);
 
         return $page;
     }
@@ -216,11 +218,25 @@ class PageRepo
         }
 
         $pageContent = new PageContent($page);
-        if (!empty($input['markdown'] ?? '')) {
+        $currentEditor = $page->editor ?: PageEditorData::getSystemDefaultEditor();
+        $newEditor = $currentEditor;
+
+        $haveInput = isset($input['markdown']) || isset($input['html']);
+        $inputEmpty = empty($input['markdown']) && empty($input['html']);
+
+        if ($haveInput && $inputEmpty) {
+            $pageContent->setNewHTML('');
+        } elseif (!empty($input['markdown']) && is_string($input['markdown'])) {
+            $newEditor = 'markdown';
             $pageContent->setNewMarkdown($input['markdown']);
         } elseif (isset($input['html'])) {
+            $newEditor = 'wysiwyg';
             $pageContent->setNewHTML($input['html']);
         }
+
+        if ($newEditor !== $currentEditor && userCan('editor-change')) {
+            $page->editor = $newEditor;
+        }
     }
 
     /**
@@ -228,8 +244,12 @@ class PageRepo
      */
     protected function savePageRevision(Page $page, string $summary = null): PageRevision
     {
-        $revision = new PageRevision($page->getAttributes());
+        $revision = new PageRevision();
 
+        $revision->name = $page->name;
+        $revision->html = $page->html;
+        $revision->markdown = $page->markdown;
+        $revision->text = $page->text;
         $revision->page_id = $page->id;
         $revision->slug = $page->slug;
         $revision->book_slug = $page->book->slug;
@@ -259,10 +279,15 @@ class PageRepo
             return $page;
         }
 
-        // Otherwise save the data to a revision
+        // Otherwise, save the data to a revision
         $draft = $this->getPageRevisionToUpdate($page);
         $draft->fill($input);
-        if (setting('app-editor') !== 'markdown') {
+
+        if (!empty($input['markdown'])) {
+            $draft->markdown = $input['markdown'];
+            $draft->html = '';
+        } else {
+            $draft->html = $input['html'];
             $draft->markdown = '';
         }
 
@@ -280,7 +305,7 @@ class PageRepo
     {
         $trashCan = new TrashCan();
         $trashCan->softDestroyPage($page);
-        Activity::addForEntity($page, ActivityType::PAGE_DELETE);
+        Activity::add(ActivityType::PAGE_DELETE, $page);
         $trashCan->autoClearOld();
     }
 
@@ -290,6 +315,8 @@ class PageRepo
     public function restoreRevision(Page $page, int $revisionId): Page
     {
         $page->revision_count++;
+
+        /** @var PageRevision $revision */
         $revision = $page->revisions()->where('id', '=', $revisionId)->first();
 
         $page->fill($revision->toArray());
@@ -309,7 +336,7 @@ class PageRepo
         $summary = trans('entities.pages_revision_restored_from', ['id' => strval($revisionId), 'summary' => $revision->summary]);
         $this->savePageRevision($page, $summary);
 
-        Activity::addForEntity($page, ActivityType::PAGE_RESTORE);
+        Activity::add(ActivityType::PAGE_RESTORE, $page);
 
         return $page;
     }
@@ -325,7 +352,7 @@ class PageRepo
     public function move(Page $page, string $parentIdentifier): Entity
     {
         $parent = $this->findParentByIdentifier($parentIdentifier);
-        if ($parent === null) {
+        if (is_null($parent)) {
             throw new MoveOperationException('Book or chapter to move page into not found');
         }
 
@@ -334,59 +361,23 @@ class PageRepo
         }
 
         $page->chapter_id = ($parent instanceof Chapter) ? $parent->id : null;
-        $page->changeBook($parent instanceof Book ? $parent->id : $parent->book->id);
+        $newBookId = ($parent instanceof Chapter) ? $parent->book->id : $parent->id;
+        $page->changeBook($newBookId);
         $page->rebuildPermissions();
 
-        Activity::addForEntity($page, ActivityType::PAGE_MOVE);
+        Activity::add(ActivityType::PAGE_MOVE, $page);
 
         return $parent;
     }
 
     /**
-     * Copy an existing page in the system.
-     * Optionally providing a new parent via string identifier and a new name.
-     *
-     * @throws MoveOperationException
-     * @throws PermissionsException
-     */
-    public function copy(Page $page, string $parentIdentifier = null, string $newName = null): Page
-    {
-        $parent = $parentIdentifier ? $this->findParentByIdentifier($parentIdentifier) : $page->getParent();
-        if ($parent === null) {
-            throw new MoveOperationException('Book or chapter to move page into not found');
-        }
-
-        if (!userCan('page-create', $parent)) {
-            throw new PermissionsException('User does not have permission to create a page within the new parent');
-        }
-
-        $copyPage = $this->getNewDraftPage($parent);
-        $pageData = $page->getAttributes();
-
-        // Update name
-        if (!empty($newName)) {
-            $pageData['name'] = $newName;
-        }
-
-        // Copy tags from previous page if set
-        if ($page->tags) {
-            $pageData['tags'] = [];
-            foreach ($page->tags as $tag) {
-                $pageData['tags'][] = ['name' => $tag->name, 'value' => $tag->value];
-            }
-        }
-
-        return $this->publishDraft($copyPage, $pageData);
-    }
-
-    /**
-     * Find a page parent entity via a identifier string in the format:
+     * Find a page parent entity via an identifier string in the format:
      * {type}:{id}
      * Example: (book:5).
      *
      * @throws MoveOperationException
      */
-    protected function findParentByIdentifier(string $identifier): ?Entity
+    public function findParentByIdentifier(string $identifier): ?Entity
     {
         $stringExploded = explode(':', $identifier);
         $entityType = $stringExploded[0];
@@ -401,23 +392,6 @@ class PageRepo
         return $parentClass::visible()->where('id', '=', $entityId)->first();
     }
 
-    /**
-     * Change the page's parent to the given entity.
-     */
-    protected function changeParent(Page $page, Entity $parent)
-    {
-        $book = ($parent instanceof Book) ? $parent : $parent->book;
-        $page->chapter_id = ($parent instanceof Chapter) ? $parent->id : 0;
-        $page->save();
-
-        if ($page->book->id !== $book->id) {
-            $page->changeBook($book->id);
-        }
-
-        $page->load('book');
-        $book->rebuildPermissions();
-    }
-
     /**
      * Get a page revision to update for the given page.
      * Checks for an existing revisions before providing a fresh one.
@@ -467,6 +441,7 @@ class PageRepo
     {
         $parent = $page->getParent();
         if ($parent instanceof Chapter) {
+            /** @var ?Page $lastPage */
             $lastPage = $parent->pages('desc')->first();
 
             return $lastPage ? $lastPage->priority + 1 : 0;

app/Entities/Tools/BookContents.php

@@ -7,7 +7,6 @@ use BookStack\Entities\Models\BookChild;
 use BookStack\Entities\Models\Chapter;
 use BookStack\Entities\Models\Entity;
 use BookStack\Entities\Models\Page;
-use BookStack\Exceptions\SortOperationException;
 use Illuminate\Support\Collection;
 
 class BookContents
@@ -67,7 +66,7 @@ class BookContents
         $all->each(function (Entity $entity) use ($renderPages) {
             $entity->setRelation('book', $this->book);
 
-            if ($renderPages && $entity->isA('page')) {
+            if ($renderPages && $entity instanceof Page) {
                 $entity->html = (new PageContent($entity))->render();
             }
         });
@@ -107,111 +106,209 @@ class BookContents
     }
 
     /**
-     * Sort the books content using the given map.
-     * The map is a single-dimension collection of objects in the following format:
-     *   {
-     *     +"id": "294" (ID of item)
-     *     +"sort": 1 (Sort order index)
-     *     +"parentChapter": false (ID of parent chapter, as string, or false)
-     *     +"type": "page" (Entity type of item)
-     *     +"book": "1" (Id of book to place item in)
-     *   }.
-     *
+     * Sort the books content using the given sort map.
      * Returns a list of books that were involved in the operation.
      *
-     * @throws SortOperationException
+     * @returns Book[]
      */
-    public function sortUsingMap(Collection $sortMap): Collection
+    public function sortUsingMap(BookSortMap $sortMap): array
     {
         // Load models into map
-        $this->loadModelsIntoSortMap($sortMap);
-        $booksInvolved = $this->getBooksInvolvedInSort($sortMap);
+        $modelMap = $this->loadModelsFromSortMap($sortMap);
+
+        // Sort our changes from our map to be chapters first
+        // Since they need to be process to ensure book alignment for child page changes.
+        $sortMapItems = $sortMap->all();
+        usort($sortMapItems, function (BookSortMapItem $itemA, BookSortMapItem $itemB) {
+            $aScore = $itemA->type === 'page' ? 2 : 1;
+            $bScore = $itemB->type === 'page' ? 2 : 1;
+
+            return $aScore - $bScore;
+        });
 
         // Perform the sort
-        $sortMap->each(function ($mapItem) {
-            $this->applySortUpdates($mapItem);
-        });
+        foreach ($sortMapItems as $item) {
+            $this->applySortUpdates($item, $modelMap);
+        }
 
-        // Update permissions and activity.
-        $booksInvolved->each(function (Book $book) {
+        /** @var Book[] $booksInvolved */
+        $booksInvolved = array_values(array_filter($modelMap, function (string $key) {
+            return strpos($key, 'book:') === 0;
+        }, ARRAY_FILTER_USE_KEY));
+
+        // Update permissions of books involved
+        foreach ($booksInvolved as $book) {
             $book->rebuildPermissions();
-        });
+        }
 
         return $booksInvolved;
     }
 
     /**
      * Using the given sort map item, detect changes for the related model
-     * and update it if required.
+     * and update it if required. Changes where permissions are lacking will
+     * be skipped and not throw an error.
+     *
+     * @param array<string, Entity> $modelMap
      */
-    protected function applySortUpdates(\stdClass $sortMapItem)
+    protected function applySortUpdates(BookSortMapItem $sortMapItem, array $modelMap): void
     {
         /** @var BookChild $model */
-        $model = $sortMapItem->model;
+        $model = $modelMap[$sortMapItem->type . ':' . $sortMapItem->id] ?? null;
+        if (!$model) {
+            return;
+        }
 
-        $priorityChanged = intval($model->priority) !== intval($sortMapItem->sort);
-        $bookChanged = intval($model->book_id) !== intval($sortMapItem->book);
-        $chapterChanged = ($sortMapItem->type === 'page') && intval($model->chapter_id) !== $sortMapItem->parentChapter;
+        $priorityChanged = $model->priority !== $sortMapItem->sort;
+        $bookChanged = $model->book_id !== $sortMapItem->parentBookId;
+        $chapterChanged = ($model instanceof Page) && $model->chapter_id !== $sortMapItem->parentChapterId;
 
+        // Stop if there's no change
+        if (!$priorityChanged && !$bookChanged && !$chapterChanged) {
+            return;
+        }
+
+        $currentParentKey = 'book:' . $model->book_id;
+        if ($model instanceof Page && $model->chapter_id) {
+            $currentParentKey = 'chapter:' . $model->chapter_id;
+        }
+
+        $currentParent = $modelMap[$currentParentKey] ?? null;
+        /** @var Book $newBook */
+        $newBook = $modelMap['book:' . $sortMapItem->parentBookId] ?? null;
+        /** @var ?Chapter $newChapter */
+        $newChapter = $sortMapItem->parentChapterId ? ($modelMap['chapter:' . $sortMapItem->parentChapterId] ?? null) : null;
+
+        if (!$this->isSortChangePermissible($sortMapItem, $model, $currentParent, $newBook, $newChapter)) {
+            return;
+        }
+
+        // Action the required changes
         if ($bookChanged) {
-            $model->changeBook($sortMapItem->book);
+            $model->changeBook($newBook->id);
         }
 
         if ($chapterChanged) {
-            $model->chapter_id = intval($sortMapItem->parentChapter);
-            $model->save();
+            $model->chapter_id = $newChapter->id ?? 0;
         }
 
         if ($priorityChanged) {
-            $model->priority = intval($sortMapItem->sort);
+            $model->priority = $sortMapItem->sort;
+        }
+
+        if ($chapterChanged || $priorityChanged) {
             $model->save();
         }
     }
 
+    /**
+     * Check if the current user has permissions to apply the given sorting change.
+     * Is quite complex since items can gain a different parent change. Acts as a:
+     * - Update of old parent element (Change of content/order).
+     * - Update of sorted/moved element.
+     * - Deletion of element (Relative to parent upon move).
+     * - Creation of element within parent (Upon move to new parent).
+     */
+    protected function isSortChangePermissible(BookSortMapItem $sortMapItem, BookChild $model, ?Entity $currentParent, ?Entity $newBook, ?Entity $newChapter): bool
+    {
+        // Stop if we can't see the current parent or new book.
+        if (!$currentParent || !$newBook) {
+            return false;
+        }
+
+        $hasNewParent = $newBook->id !== $model->book_id || ($model instanceof Page && $model->chapter_id !== ($sortMapItem->parentChapterId ?? 0));
+        if ($model instanceof Chapter) {
+            $hasPermission = userCan('book-update', $currentParent)
+                && userCan('book-update', $newBook)
+                && userCan('chapter-update', $model)
+                && (!$hasNewParent || userCan('chapter-create', $newBook))
+                && (!$hasNewParent || userCan('chapter-delete', $model));
+
+            if (!$hasPermission) {
+                return false;
+            }
+        }
+
+        if ($model instanceof Page) {
+            $parentPermission = ($currentParent instanceof Chapter) ? 'chapter-update' : 'book-update';
+            $hasCurrentParentPermission = userCan($parentPermission, $currentParent);
+
+            // This needs to check if there was an intended chapter location in the original sort map
+            // rather than inferring from the $newChapter since that variable may be null
+            // due to other reasons (Visibility).
+            $newParent = $sortMapItem->parentChapterId ? $newChapter : $newBook;
+            if (!$newParent) {
+                return false;
+            }
+
+            $hasPageEditPermission = userCan('page-update', $model);
+            $newParentInRightLocation = ($newParent instanceof Book || $newParent->book_id === $newBook->id);
+            $newParentPermission = ($newParent instanceof Chapter) ? 'chapter-update' : 'book-update';
+            $hasNewParentPermission = userCan($newParentPermission, $newParent);
+
+            $hasDeletePermissionIfMoving = (!$hasNewParent || userCan('page-delete', $model));
+            $hasCreatePermissionIfMoving = (!$hasNewParent || userCan('page-create', $newParent));
+
+            $hasPermission = $hasCurrentParentPermission
+                && $newParentInRightLocation
+                && $hasNewParentPermission
+                && $hasPageEditPermission
+                && $hasDeletePermissionIfMoving
+                && $hasCreatePermissionIfMoving;
+
+            if (!$hasPermission) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
     /**
      * Load models from the database into the given sort map.
-     */
-    protected function loadModelsIntoSortMap(Collection $sortMap): void
-    {
-        $keyMap = $sortMap->keyBy(function (\stdClass $sortMapItem) {
-            return  $sortMapItem->type . ':' . $sortMapItem->id;
-        });
-        $pageIds = $sortMap->where('type', '=', 'page')->pluck('id');
-        $chapterIds = $sortMap->where('type', '=', 'chapter')->pluck('id');
-
-        $pages = Page::visible()->whereIn('id', $pageIds)->get();
-        $chapters = Chapter::visible()->whereIn('id', $chapterIds)->get();
-
-        foreach ($pages as $page) {
-            $sortItem = $keyMap->get('page:' . $page->id);
-            $sortItem->model = $page;
-        }
-
-        foreach ($chapters as $chapter) {
-            $sortItem = $keyMap->get('chapter:' . $chapter->id);
-            $sortItem->model = $chapter;
-        }
-    }
-
-    /**
-     * Get the books involved in a sort.
-     * The given sort map should have its models loaded first.
      *
-     * @throws SortOperationException
+     * @return array<string, Entity>
      */
-    protected function getBooksInvolvedInSort(Collection $sortMap): Collection
+    protected function loadModelsFromSortMap(BookSortMap $sortMap): array
     {
-        $bookIdsInvolved = collect([$this->book->id]);
-        $bookIdsInvolved = $bookIdsInvolved->concat($sortMap->pluck('book'));
-        $bookIdsInvolved = $bookIdsInvolved->concat($sortMap->pluck('model.book_id'));
-        $bookIdsInvolved = $bookIdsInvolved->unique()->toArray();
+        $modelMap = [];
+        $ids = [
+            'chapter' => [],
+            'page'    => [],
+            'book'    => [],
+        ];
 
-        $books = Book::hasPermission('update')->whereIn('id', $bookIdsInvolved)->get();
-
-        if (count($books) !== count($bookIdsInvolved)) {
-            throw new SortOperationException('Could not find all books requested in sort operation');
+        foreach ($sortMap->all() as $sortMapItem) {
+            $ids[$sortMapItem->type][] = $sortMapItem->id;
+            $ids['book'][] = $sortMapItem->parentBookId;
+            if ($sortMapItem->parentChapterId) {
+                $ids['chapter'][] = $sortMapItem->parentChapterId;
+            }
         }
 
-        return $books;
+        $pages = Page::visible()->whereIn('id', array_unique($ids['page']))->get(Page::$listAttributes);
+        /** @var Page $page */
+        foreach ($pages as $page) {
+            $modelMap['page:' . $page->id] = $page;
+            $ids['book'][] = $page->book_id;
+            if ($page->chapter_id) {
+                $ids['chapter'][] = $page->chapter_id;
+            }
+        }
+
+        $chapters = Chapter::visible()->whereIn('id', array_unique($ids['chapter']))->get();
+        /** @var Chapter $chapter */
+        foreach ($chapters as $chapter) {
+            $modelMap['chapter:' . $chapter->id] = $chapter;
+            $ids['book'][] = $chapter->book_id;
+        }
+
+        $books = Book::visible()->whereIn('id', array_unique($ids['book']))->get();
+        /** @var Book $book */
+        foreach ($books as $book) {
+            $modelMap['book:' . $book->id] = $book;
+        }
+
+        return $modelMap;
     }
 }

app/Entities/Tools/BookSortMap.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace BookStack\Entities\Tools;
+
+class BookSortMap
+{
+    /**
+     * @var BookSortMapItem[]
+     */
+    protected $mapData = [];
+
+    public function addItem(BookSortMapItem $mapItem): void
+    {
+        $this->mapData[] = $mapItem;
+    }
+
+    /**
+     * @return BookSortMapItem[]
+     */
+    public function all(): array
+    {
+        return $this->mapData;
+    }
+
+    public static function fromJson(string $json): self
+    {
+        $map = new BookSortMap();
+        $mapData = json_decode($json);
+
+        foreach ($mapData as $mapDataItem) {
+            $item = new BookSortMapItem(
+                intval($mapDataItem->id),
+                intval($mapDataItem->sort),
+                $mapDataItem->parentChapter ? intval($mapDataItem->parentChapter) : null,
+                $mapDataItem->type,
+                intval($mapDataItem->book)
+            );
+
+            $map->addItem($item);
+        }
+
+        return $map;
+    }
+}

app/Entities/Tools/BookSortMapItem.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace BookStack\Entities\Tools;
+
+class BookSortMapItem
+{
+    /**
+     * @var int
+     */
+    public $id;
+
+    /**
+     * @var int
+     */
+    public $sort;
+
+    /**
+     * @var ?int
+     */
+    public $parentChapterId;
+
+    /**
+     * @var string
+     */
+    public $type;
+
+    /**
+     * @var int
+     */
+    public $parentBookId;
+
+    public function __construct(int $id, int $sort, ?int $parentChapterId, string $type, int $parentBookId)
+    {
+        $this->id = $id;
+        $this->sort = $sort;
+        $this->parentChapterId = $parentChapterId;
+        $this->type = $type;
+        $this->parentBookId = $parentBookId;
+    }
+}

app/Entities/Tools/Cloner.php

@@ -0,0 +1,149 @@
+<?php
+
+namespace BookStack\Entities\Tools;
+
+use BookStack\Actions\Tag;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Entity;
+use BookStack\Entities\Models\Page;
+use BookStack\Entities\Repos\BookRepo;
+use BookStack\Entities\Repos\ChapterRepo;
+use BookStack\Entities\Repos\PageRepo;
+use BookStack\Uploads\Image;
+use BookStack\Uploads\ImageService;
+use Illuminate\Http\UploadedFile;
+
+class Cloner
+{
+    protected PageRepo $pageRepo;
+    protected ChapterRepo $chapterRepo;
+    protected BookRepo $bookRepo;
+    protected ImageService $imageService;
+
+    public function __construct(PageRepo $pageRepo, ChapterRepo $chapterRepo, BookRepo $bookRepo, ImageService $imageService)
+    {
+        $this->pageRepo = $pageRepo;
+        $this->chapterRepo = $chapterRepo;
+        $this->bookRepo = $bookRepo;
+        $this->imageService = $imageService;
+    }
+
+    /**
+     * Clone the given page into the given parent using the provided name.
+     */
+    public function clonePage(Page $original, Entity $parent, string $newName): Page
+    {
+        $copyPage = $this->pageRepo->getNewDraftPage($parent);
+        $pageData = $this->entityToInputData($original);
+        $pageData['name'] = $newName;
+
+        return $this->pageRepo->publishDraft($copyPage, $pageData);
+    }
+
+    /**
+     * Clone the given page into the given parent using the provided name.
+     * Clones all child pages.
+     */
+    public function cloneChapter(Chapter $original, Book $parent, string $newName): Chapter
+    {
+        $chapterDetails = $this->entityToInputData($original);
+        $chapterDetails['name'] = $newName;
+
+        $copyChapter = $this->chapterRepo->create($chapterDetails, $parent);
+
+        if (userCan('page-create', $copyChapter)) {
+            /** @var Page $page */
+            foreach ($original->getVisiblePages() as $page) {
+                $this->clonePage($page, $copyChapter, $page->name);
+            }
+        }
+
+        return $copyChapter;
+    }
+
+    /**
+     * Clone the given book.
+     * Clones all child chapters & pages.
+     */
+    public function cloneBook(Book $original, string $newName): Book
+    {
+        $bookDetails = $this->entityToInputData($original);
+        $bookDetails['name'] = $newName;
+
+        $copyBook = $this->bookRepo->create($bookDetails);
+
+        $directChildren = $original->getDirectChildren();
+        foreach ($directChildren as $child) {
+            if ($child instanceof Chapter && userCan('chapter-create', $copyBook)) {
+                $this->cloneChapter($child, $copyBook, $child->name);
+            }
+
+            if ($child instanceof Page && !$child->draft && userCan('page-create', $copyBook)) {
+                $this->clonePage($child, $copyBook, $child->name);
+            }
+        }
+
+        return $copyBook;
+    }
+
+    /**
+     * Convert an entity to a raw data array of input data.
+     *
+     * @return array<string, mixed>
+     */
+    public function entityToInputData(Entity $entity): array
+    {
+        $inputData = $entity->getAttributes();
+        $inputData['tags'] = $this->entityTagsToInputArray($entity);
+
+        // Add a cover to the data if existing on the original entity
+        if ($entity->cover instanceof Image) {
+            $uploadedFile = $this->imageToUploadedFile($entity->cover);
+            $inputData['image'] = $uploadedFile;
+        }
+
+        return $inputData;
+    }
+
+    /**
+     * Copy the permission settings from the source entity to the target entity.
+     */
+    public function copyEntityPermissions(Entity $sourceEntity, Entity $targetEntity): void
+    {
+        $targetEntity->restricted = $sourceEntity->restricted;
+        $permissions = $sourceEntity->permissions()->get(['role_id', 'action'])->toArray();
+        $targetEntity->permissions()->delete();
+        $targetEntity->permissions()->createMany($permissions);
+        $targetEntity->rebuildPermissions();
+    }
+
+    /**
+     * Convert an image instance to an UploadedFile instance to mimic
+     * a file being uploaded.
+     */
+    protected function imageToUploadedFile(Image $image): ?UploadedFile
+    {
+        $imgData = $this->imageService->getImageData($image);
+        $tmpImgFilePath = tempnam(sys_get_temp_dir(), 'bs_cover_clone_');
+        file_put_contents($tmpImgFilePath, $imgData);
+
+        return new UploadedFile($tmpImgFilePath, basename($image->path));
+    }
+
+    /**
+     * Convert the tags on the given entity to the raw format
+     * that's used for incoming request data.
+     */
+    protected function entityTagsToInputArray(Entity $entity): array
+    {
+        $tags = [];
+
+        /** @var Tag $tag */
+        foreach ($entity->tags as $tag) {
+            $tags[] = ['name' => $tag->name, 'value' => $tag->value];
+        }
+
+        return $tags;
+    }
+}

app/Entities/Tools/ExportFormatter.php

@@ -7,21 +7,27 @@ use BookStack\Entities\Models\Chapter;
 use BookStack\Entities\Models\Page;
 use BookStack\Entities\Tools\Markdown\HtmlToMarkdown;
 use BookStack\Uploads\ImageService;
-use DomPDF;
+use BookStack\Util\CspService;
+use DOMDocument;
+use DOMElement;
+use DOMXPath;
 use Exception;
-use SnappyPDF;
 use Throwable;
 
 class ExportFormatter
 {
-    protected $imageService;
+    protected ImageService $imageService;
+    protected PdfGenerator $pdfGenerator;
+    protected CspService $cspService;
 
     /**
      * ExportService constructor.
      */
-    public function __construct(ImageService $imageService)
+    public function __construct(ImageService $imageService, PdfGenerator $pdfGenerator, CspService $cspService)
     {
         $this->imageService = $imageService;
+        $this->pdfGenerator = $pdfGenerator;
+        $this->cspService = $cspService;
     }
 
     /**
@@ -33,9 +39,10 @@ class ExportFormatter
     public function pageToContainedHtml(Page $page)
     {
         $page->html = (new PageContent($page))->render();
-        $pageHtml = view('pages.export', [
-            'page'   => $page,
-            'format' => 'html',
+        $pageHtml = view('exports.page', [
+            'page'       => $page,
+            'format'     => 'html',
+            'cspContent' => $this->cspService->getCspMetaTagValue(),
         ])->render();
 
         return $this->containHtml($pageHtml);
@@ -52,10 +59,11 @@ class ExportFormatter
         $pages->each(function ($page) {
             $page->html = (new PageContent($page))->render();
         });
-        $html = view('chapters.export', [
-            'chapter' => $chapter,
-            'pages'   => $pages,
-            'format'  => 'html',
+        $html = view('exports.chapter', [
+            'chapter'    => $chapter,
+            'pages'      => $pages,
+            'format'     => 'html',
+            'cspContent' => $this->cspService->getCspMetaTagValue(),
         ])->render();
 
         return $this->containHtml($html);
@@ -69,10 +77,11 @@ class ExportFormatter
     public function bookToContainedHtml(Book $book)
     {
         $bookTree = (new BookContents($book))->getTree(false, true);
-        $html = view('books.export', [
+        $html = view('exports.book', [
             'book'         => $book,
             'bookChildren' => $bookTree,
             'format'       => 'html',
+            'cspContent'   => $this->cspService->getCspMetaTagValue(),
         ])->render();
 
         return $this->containHtml($html);
@@ -86,9 +95,10 @@ class ExportFormatter
     public function pageToPdf(Page $page)
     {
         $page->html = (new PageContent($page))->render();
-        $html = view('pages.export', [
+        $html = view('exports.page', [
             'page'   => $page,
             'format' => 'pdf',
+            'engine' => $this->pdfGenerator->getActiveEngine(),
         ])->render();
 
         return $this->htmlToPdf($html);
@@ -106,10 +116,11 @@ class ExportFormatter
             $page->html = (new PageContent($page))->render();
         });
 
-        $html = view('chapters.export', [
+        $html = view('exports.chapter', [
             'chapter' => $chapter,
             'pages'   => $pages,
             'format'  => 'pdf',
+            'engine'  => $this->pdfGenerator->getActiveEngine(),
         ])->render();
 
         return $this->htmlToPdf($html);
@@ -123,10 +134,11 @@ class ExportFormatter
     public function bookToPdf(Book $book)
     {
         $bookTree = (new BookContents($book))->getTree(false, true);
-        $html = view('books.export', [
+        $html = view('exports.book', [
             'book'         => $book,
             'bookChildren' => $bookTree,
             'format'       => 'pdf',
+            'engine'       => $this->pdfGenerator->getActiveEngine(),
         ])->render();
 
         return $this->htmlToPdf($html);
@@ -139,16 +151,61 @@ class ExportFormatter
      */
     protected function htmlToPdf(string $html): string
     {
-        $containedHtml = $this->containHtml($html);
-        $useWKHTML = config('snappy.pdf.binary') !== false && config('app.allow_untrusted_server_fetching') === true;
-        if ($useWKHTML) {
-            $pdf = SnappyPDF::loadHTML($containedHtml);
-            $pdf->setOption('print-media-type', true);
-        } else {
-            $pdf = DomPDF::loadHTML($containedHtml);
+        $html = $this->containHtml($html);
+        $html = $this->replaceIframesWithLinks($html);
+        $html = $this->openDetailElements($html);
+
+        return $this->pdfGenerator->fromHtml($html);
+    }
+
+    /**
+     * Within the given HTML content, Open any detail blocks.
+     */
+    protected function openDetailElements(string $html): string
+    {
+        libxml_use_internal_errors(true);
+
+        $doc = new DOMDocument();
+        $doc->loadHTML(mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'));
+        $xPath = new DOMXPath($doc);
+
+        $details = $xPath->query('//details');
+        /** @var DOMElement $detail */
+        foreach ($details as $detail) {
+            $detail->setAttribute('open', 'open');
         }
 
-        return $pdf->output();
+        return $doc->saveHTML();
+    }
+
+    /**
+     * Within the given HTML content, replace any iframe elements
+     * with anchor links within paragraph blocks.
+     */
+    protected function replaceIframesWithLinks(string $html): string
+    {
+        libxml_use_internal_errors(true);
+
+        $doc = new DOMDocument();
+        $doc->loadHTML(mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'));
+        $xPath = new DOMXPath($doc);
+
+        $iframes = $xPath->query('//iframe');
+        /** @var DOMElement $iframe */
+        foreach ($iframes as $iframe) {
+            $link = $iframe->getAttribute('src');
+            if (strpos($link, '//') === 0) {
+                $link = 'https:' . $link;
+            }
+
+            $anchor = $doc->createElement('a', $link);
+            $anchor->setAttribute('href', $link);
+            $paragraph = $doc->createElement('p');
+            $paragraph->appendChild($anchor);
+            $iframe->parentNode->replaceChild($paragraph, $iframe);
+        }
+
+        return $doc->saveHTML();
     }
 
     /**
@@ -269,7 +326,7 @@ class ExportFormatter
             $text .= $this->pageToMarkdown($page) . "\n\n";
         }
 
-        return $text;
+        return trim($text);
     }
 
     /**
@@ -281,12 +338,12 @@ class ExportFormatter
         $text = '# ' . $book->name . "\n\n";
         foreach ($bookTree as $bookChild) {
             if ($bookChild instanceof Chapter) {
-                $text .= $this->chapterToMarkdown($bookChild);
+                $text .= $this->chapterToMarkdown($bookChild) . "\n\n";
             } else {
-                $text .= $this->pageToMarkdown($bookChild);
+                $text .= $this->pageToMarkdown($bookChild) . "\n\n";
             }
         }
 
-        return $text;
+        return trim($text);
     }
 }

app/Entities/Tools/HierarchyTransformer.php

@@ -0,0 +1,87 @@
+<?php
+
+namespace BookStack\Entities\Tools;
+
+use BookStack\Actions\ActivityType;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Bookshelf;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Page;
+use BookStack\Entities\Repos\BookRepo;
+use BookStack\Entities\Repos\BookshelfRepo;
+use BookStack\Facades\Activity;
+
+class HierarchyTransformer
+{
+    protected BookRepo $bookRepo;
+    protected BookshelfRepo $shelfRepo;
+    protected Cloner $cloner;
+    protected TrashCan $trashCan;
+
+    public function __construct(BookRepo $bookRepo, BookshelfRepo $shelfRepo, Cloner $cloner, TrashCan $trashCan)
+    {
+        $this->bookRepo = $bookRepo;
+        $this->shelfRepo = $shelfRepo;
+        $this->cloner = $cloner;
+        $this->trashCan = $trashCan;
+    }
+
+    /**
+     * Transform a chapter into a book.
+     * Does not check permissions, check before calling.
+     */
+    public function transformChapterToBook(Chapter $chapter): Book
+    {
+        $inputData = $this->cloner->entityToInputData($chapter);
+        $book = $this->bookRepo->create($inputData);
+        $this->cloner->copyEntityPermissions($chapter, $book);
+
+        /** @var Page $page */
+        foreach ($chapter->pages as $page) {
+            $page->chapter_id = 0;
+            $page->changeBook($book->id);
+        }
+
+        $this->trashCan->destroyEntity($chapter);
+
+        Activity::add(ActivityType::BOOK_CREATE_FROM_CHAPTER, $book);
+
+        return $book;
+    }
+
+    /**
+     * Transform a book into a shelf.
+     * Does not check permissions, check before calling.
+     */
+    public function transformBookToShelf(Book $book): Bookshelf
+    {
+        $inputData = $this->cloner->entityToInputData($book);
+        $shelf = $this->shelfRepo->create($inputData, []);
+        $this->cloner->copyEntityPermissions($book, $shelf);
+
+        $shelfBookSyncData = [];
+
+        /** @var Chapter $chapter */
+        foreach ($book->chapters as $index => $chapter) {
+            $newBook = $this->transformChapterToBook($chapter);
+            $shelfBookSyncData[$newBook->id] = ['order' => $index];
+            if (!$newBook->restricted) {
+                $this->cloner->copyEntityPermissions($shelf, $newBook);
+            }
+        }
+
+        if ($book->directPages->count() > 0) {
+            $book->name .= ' ' . trans('entities.pages');
+            $shelfBookSyncData[$book->id] = ['order' => count($shelfBookSyncData) + 1];
+            $book->save();
+        } else {
+            $this->trashCan->destroyEntity($book);
+        }
+
+        $shelf->books()->sync($shelfBookSyncData);
+
+        Activity::add(ActivityType::BOOKSHELF_CREATE_FROM_BOOK, $shelf);
+
+        return $shelf;
+    }
+}

app/Entities/Tools/Markdown/CheckboxConverter.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace BookStack\Entities\Tools\Markdown;
+
+use League\HTMLToMarkdown\Converter\ConverterInterface;
+use League\HTMLToMarkdown\ElementInterface;
+
+class CheckboxConverter implements ConverterInterface
+{
+    public function convert(ElementInterface $element): string
+    {
+        if (strtolower($element->getAttribute('type')) === 'checkbox') {
+            $isChecked = $element->getAttribute('checked') === 'checked';
+
+            return $isChecked ? ' [x] ' : ' [ ] ';
+        }
+
+        return $element->getValue();
+    }
+
+    /**
+     * @return string[]
+     */
+    public function getSupportedTags(): array
+    {
+        return ['input'];
+    }
+}

app/Entities/Tools/Markdown/CustomDivConverter.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace BookStack\Entities\Tools\Markdown;
+
+use League\HTMLToMarkdown\Converter\DivConverter;
+use League\HTMLToMarkdown\ElementInterface;
+
+class CustomDivConverter extends DivConverter
+{
+    public function convert(ElementInterface $element): string
+    {
+        // Clean up draw.io diagrams
+        $drawIoDiagram = $element->getAttribute('drawio-diagram');
+        if ($drawIoDiagram) {
+            return "<div drawio-diagram=\"{$drawIoDiagram}\">{$element->getValue()}</div>\n\n";
+        }
+
+        return parent::convert($element);
+    }
+}

app/Entities/Tools/Markdown/CustomImageConverter.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace BookStack\Entities\Tools\Markdown;
+
+use League\HTMLToMarkdown\Converter\ImageConverter;
+use League\HTMLToMarkdown\ElementInterface;
+
+class CustomImageConverter extends ImageConverter
+{
+    public function convert(ElementInterface $element): string
+    {
+        $parent = $element->getParent();
+
+        // Remain as HTML if within diagram block.
+        $withinDrawing = $parent && !empty($parent->getAttribute('drawio-diagram'));
+        if ($withinDrawing) {
+            $src = e($element->getAttribute('src'));
+            $alt = e($element->getAttribute('alt'));
+
+            return "<img src=\"{$src}\" alt=\"{$alt}\"/>";
+        }
+
+        return parent::convert($element);
+    }
+}

app/Entities/Tools/Markdown/CustomParagraphConverter.php

@@ -9,7 +9,7 @@ class CustomParagraphConverter extends ParagraphConverter
 {
     public function convert(ElementInterface $element): string
     {
-        $class = $element->getAttribute('class');
+        $class = e($element->getAttribute('class'));
         if (strpos($class, 'callout') !== false) {
             return "<{$element->getTagName()} class=\"{$class}\">{$element->getValue()}</{$element->getTagName()}>\n\n";
         }

app/Entities/Tools/Markdown/HtmlToMarkdown.php

@@ -5,12 +5,10 @@ namespace BookStack\Entities\Tools\Markdown;
 use League\HTMLToMarkdown\Converter\BlockquoteConverter;
 use League\HTMLToMarkdown\Converter\CodeConverter;
 use League\HTMLToMarkdown\Converter\CommentConverter;
-use League\HTMLToMarkdown\Converter\DivConverter;
 use League\HTMLToMarkdown\Converter\EmphasisConverter;
 use League\HTMLToMarkdown\Converter\HardBreakConverter;
 use League\HTMLToMarkdown\Converter\HeaderConverter;
 use League\HTMLToMarkdown\Converter\HorizontalRuleConverter;
-use League\HTMLToMarkdown\Converter\ImageConverter;
 use League\HTMLToMarkdown\Converter\LinkConverter;
 use League\HTMLToMarkdown\Converter\ListBlockConverter;
 use League\HTMLToMarkdown\Converter\ListItemConverter;
@@ -21,7 +19,7 @@ use League\HTMLToMarkdown\HtmlConverter;
 
 class HtmlToMarkdown
 {
-    protected $html;
+    protected string $html;
 
     public function __construct(string $html)
     {
@@ -75,18 +73,20 @@ class HtmlToMarkdown
         $environment->addConverter(new BlockquoteConverter());
         $environment->addConverter(new CodeConverter());
         $environment->addConverter(new CommentConverter());
-        $environment->addConverter(new DivConverter());
+        $environment->addConverter(new CustomDivConverter());
         $environment->addConverter(new EmphasisConverter());
         $environment->addConverter(new HardBreakConverter());
         $environment->addConverter(new HeaderConverter());
         $environment->addConverter(new HorizontalRuleConverter());
-        $environment->addConverter(new ImageConverter());
+        $environment->addConverter(new CustomImageConverter());
         $environment->addConverter(new LinkConverter());
         $environment->addConverter(new ListBlockConverter());
         $environment->addConverter(new ListItemConverter());
         $environment->addConverter(new CustomParagraphConverter());
         $environment->addConverter(new PreformattedConverter());
         $environment->addConverter(new TextConverter());
+        $environment->addConverter(new CheckboxConverter());
+        $environment->addConverter(new SpacedTagFallbackConverter());
 
         return $environment;
     }

app/Entities/Tools/Markdown/MarkdownToHtml.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace BookStack\Entities\Tools\Markdown;
+
+use BookStack\Facades\Theme;
+use BookStack\Theming\ThemeEvents;
+use League\CommonMark\Block\Element\ListItem;
+use League\CommonMark\CommonMarkConverter;
+use League\CommonMark\Environment;
+use League\CommonMark\Extension\Table\TableExtension;
+use League\CommonMark\Extension\TaskList\TaskListExtension;
+
+class MarkdownToHtml
+{
+    protected string $markdown;
+
+    public function __construct(string $markdown)
+    {
+        $this->markdown = $markdown;
+    }
+
+    public function convert(): string
+    {
+        $environment = Environment::createCommonMarkEnvironment();
+        $environment->addExtension(new TableExtension());
+        $environment->addExtension(new TaskListExtension());
+        $environment->addExtension(new CustomStrikeThroughExtension());
+        $environment = Theme::dispatch(ThemeEvents::COMMONMARK_ENVIRONMENT_CONFIGURE, $environment) ?? $environment;
+        $converter = new CommonMarkConverter([], $environment);
+
+        $environment->addBlockRenderer(ListItem::class, new CustomListItemRenderer(), 10);
+
+        return $converter->convertToHtml($this->markdown);
+    }
+}

app/Entities/Tools/Markdown/SpacedTagFallbackConverter.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace BookStack\Entities\Tools\Markdown;
+
+use League\HTMLToMarkdown\Converter\ConverterInterface;
+use League\HTMLToMarkdown\ElementInterface;
+
+/**
+ * For certain defined tags, add additional spacing upon the retained HTML content
+ * to separate it out from anything that may be markdown soon afterwards or within.
+ */
+class SpacedTagFallbackConverter implements ConverterInterface
+{
+    public function convert(ElementInterface $element): string
+    {
+        return \html_entity_decode($element->getChildrenAsString()) . "\n\n";
+    }
+
+    public function getSupportedTags(): array
+    {
+        return ['summary', 'iframe'];
+    }
+}

app/Entities/Tools/NextPreviousContentLocator.php

@@ -64,7 +64,7 @@ class NextPreviousContentLocator
         /** @var Entity $item */
         foreach ($bookTree->all() as $item) {
             $flatOrdered->push($item);
-            $childPages = $item->visible_pages ?? [];
+            $childPages = $item->getAttribute('visible_pages') ?? [];
             $flatOrdered = $flatOrdered->concat($childPages);
         }
 

app/Entities/Tools/PageContent.php

@@ -3,27 +3,21 @@
 namespace BookStack\Entities\Tools;
 
 use BookStack\Entities\Models\Page;
-use BookStack\Entities\Tools\Markdown\CustomListItemRenderer;
-use BookStack\Entities\Tools\Markdown\CustomStrikeThroughExtension;
+use BookStack\Entities\Tools\Markdown\MarkdownToHtml;
 use BookStack\Exceptions\ImageUploadException;
-use BookStack\Facades\Theme;
-use BookStack\Theming\ThemeEvents;
 use BookStack\Uploads\ImageRepo;
 use BookStack\Uploads\ImageService;
 use BookStack\Util\HtmlContentFilter;
 use DOMDocument;
+use DOMElement;
+use DOMNode;
 use DOMNodeList;
 use DOMXPath;
 use Illuminate\Support\Str;
-use League\CommonMark\Block\Element\ListItem;
-use League\CommonMark\CommonMarkConverter;
-use League\CommonMark\Environment;
-use League\CommonMark\Extension\Table\TableExtension;
-use League\CommonMark\Extension\TaskList\TaskListExtension;
 
 class PageContent
 {
-    protected $page;
+    protected Page $page;
 
     /**
      * PageContent constructor.
@@ -51,28 +45,11 @@ class PageContent
     {
         $markdown = $this->extractBase64ImagesFromMarkdown($markdown);
         $this->page->markdown = $markdown;
-        $html = $this->markdownToHtml($markdown);
+        $html = (new MarkdownToHtml($markdown))->convert();
         $this->page->html = $this->formatHtml($html);
         $this->page->text = $this->toPlainText();
     }
 
-    /**
-     * Convert the given Markdown content to a HTML string.
-     */
-    protected function markdownToHtml(string $markdown): string
-    {
-        $environment = Environment::createCommonMarkEnvironment();
-        $environment->addExtension(new TableExtension());
-        $environment->addExtension(new TaskListExtension());
-        $environment->addExtension(new CustomStrikeThroughExtension());
-        $environment = Theme::dispatch(ThemeEvents::COMMONMARK_ENVIRONMENT_CONFIGURE, $environment) ?? $environment;
-        $converter = new CommonMarkConverter([], $environment);
-
-        $environment->addBlockRenderer(ListItem::class, new CustomListItemRenderer(), 10);
-
-        return $converter->convertToHtml($markdown);
-    }
-
     /**
      * Convert all base64 image data to saved images.
      */
@@ -107,15 +84,35 @@ class PageContent
 
     /**
      * Convert all inline base64 content to uploaded image files.
+     * Regex is used to locate the start of data-uri definitions then
+     * manual looping over content is done to parse the whole data uri.
+     * Attempting to capture the whole data uri using regex can cause PHP
+     * PCRE limits to be hit with larger, multi-MB, files.
      */
     protected function extractBase64ImagesFromMarkdown(string $markdown)
     {
         $matches = [];
-        preg_match_all('/!\[.*?]\(.*?(data:image\/.*?)[)"\s]/', $markdown, $matches);
+        $contentLength = strlen($markdown);
+        $replacements = [];
+        preg_match_all('/!\[.*?]\(.*?(data:image\/.{1,6};base64,)/', $markdown, $matches, PREG_OFFSET_CAPTURE);
 
-        foreach ($matches[1] as $base64Match) {
-            $newUrl = $this->base64ImageUriToUploadedImageUrl($base64Match);
-            $markdown = str_replace($base64Match, $newUrl, $markdown);
+        foreach ($matches[1] as $base64MatchPair) {
+            [$dataUri, $index] = $base64MatchPair;
+
+            for ($i = strlen($dataUri) + $index; $i < $contentLength; $i++) {
+                $char = $markdown[$i];
+                if ($char === ')' || $char === ' ' || $char === "\n" || $char === '"') {
+                    break;
+                }
+                $dataUri .= $char;
+            }
+
+            $newUrl = $this->base64ImageUriToUploadedImageUrl($dataUri);
+            $replacements[] = [$dataUri, $newUrl];
+        }
+
+        foreach ($replacements as [$dataUri, $newUrl]) {
+            $markdown = str_replace($dataUri, $newUrl, $markdown);
         }
 
         return $markdown;
@@ -156,7 +153,7 @@ class PageContent
     /**
      * Parse a base64 image URI into the data and extension.
      *
-     * @return array{extension: array, data: string}
+     * @return array{extension: string, data: string}
      */
     protected function parseBase64ImageUri(string $uri): array
     {
@@ -193,6 +190,15 @@ class PageContent
             }
         }
 
+        // Set ids on nested header nodes
+        $nestedHeaders = $xPath->query('//body//*//h1|//body//*//h2|//body//*//h3|//body//*//h4|//body//*//h5|//body//*//h6');
+        foreach ($nestedHeaders as $nestedHeader) {
+            [$oldId, $newId] = $this->setUniqueId($nestedHeader, $idMap);
+            if ($newId && $newId !== $oldId) {
+                $this->updateLinks($xPath, '#' . $oldId, '#' . $newId);
+            }
+        }
+
         // Ensure no duplicate ids within child items
         $idElems = $xPath->query('//body//*//*[@id]');
         foreach ($idElems as $domElem) {
@@ -208,6 +214,9 @@ class PageContent
             $html .= $doc->saveHTML($childNode);
         }
 
+        // Perform required string-level tweaks
+        $html = str_replace(' ', '&nbsp;', $html);
+
         return $html;
     }
 
@@ -228,9 +237,9 @@ class PageContent
      * A map for existing ID's should be passed in to check for current existence.
      * Returns a pair of strings in the format [old_id, new_id].
      */
-    protected function setUniqueId(\DOMNode $element, array &$idMap): array
+    protected function setUniqueId(DOMNode $element, array &$idMap): array
     {
-        if (get_class($element) !== 'DOMElement') {
+        if (!$element instanceof DOMElement) {
             return ['', ''];
         }
 
@@ -242,7 +251,7 @@ class PageContent
             return [$existingId, $existingId];
         }
 
-        // Create an unique id for the element
+        // Create a unique id for the element
         // Uses the content as a basis to ensure output is the same every time
         // the same content is passed through.
         $contentId = 'bkmrk-' . mb_substr(strtolower(preg_replace('/\s+/', '-', trim($element->nodeValue))), 0, 20);
@@ -312,7 +321,7 @@ class PageContent
      */
     protected function headerNodesToLevelList(DOMNodeList $nodeList): array
     {
-        $tree = collect($nodeList)->map(function ($header) {
+        $tree = collect($nodeList)->map(function (DOMElement $header) {
             $text = trim(str_replace("\xc2\xa0", '', $header->nodeValue));
             $text = mb_substr($text, 0, 100);
 

app/Entities/Tools/PageEditActivity.php

@@ -9,7 +9,7 @@ use Illuminate\Database\Eloquent\Builder;
 
 class PageEditActivity
 {
-    protected $page;
+    protected Page $page;
 
     /**
      * PageEditActivity constructor.

app/Entities/Tools/PageEditorData.php

@@ -0,0 +1,115 @@
+<?php
+
+namespace BookStack\Entities\Tools;
+
+use BookStack\Entities\Models\Page;
+use BookStack\Entities\Repos\PageRepo;
+use BookStack\Entities\Tools\Markdown\HtmlToMarkdown;
+use BookStack\Entities\Tools\Markdown\MarkdownToHtml;
+
+class PageEditorData
+{
+    protected Page $page;
+    protected PageRepo $pageRepo;
+    protected string $requestedEditor;
+
+    protected array $viewData;
+    protected array $warnings;
+
+    public function __construct(Page $page, PageRepo $pageRepo, string $requestedEditor)
+    {
+        $this->page = $page;
+        $this->pageRepo = $pageRepo;
+        $this->requestedEditor = $requestedEditor;
+
+        $this->viewData = $this->build();
+    }
+
+    public function getViewData(): array
+    {
+        return $this->viewData;
+    }
+
+    public function getWarnings(): array
+    {
+        return $this->warnings;
+    }
+
+    protected function build(): array
+    {
+        $page = clone $this->page;
+        $isDraft = boolval($this->page->draft);
+        $templates = $this->pageRepo->getTemplates(10);
+        $draftsEnabled = auth()->check();
+
+        $isDraftRevision = false;
+        $this->warnings = [];
+        $editActivity = new PageEditActivity($page);
+
+        if ($editActivity->hasActiveEditing()) {
+            $this->warnings[] = $editActivity->activeEditingMessage();
+        }
+
+        // Check for a current draft version for this user
+        $userDraft = $this->pageRepo->getUserDraft($page);
+        if ($userDraft !== null) {
+            $page->forceFill($userDraft->only(['name', 'html', 'markdown']));
+            $isDraftRevision = true;
+            $this->warnings[] = $editActivity->getEditingActiveDraftMessage($userDraft);
+        }
+
+        $editorType = $this->getEditorType($page);
+        $this->updateContentForEditor($page, $editorType);
+
+        return [
+            'page'            => $page,
+            'book'            => $page->book,
+            'isDraft'         => $isDraft,
+            'isDraftRevision' => $isDraftRevision,
+            'draftsEnabled'   => $draftsEnabled,
+            'templates'       => $templates,
+            'editor'          => $editorType,
+        ];
+    }
+
+    protected function updateContentForEditor(Page $page, string $editorType): void
+    {
+        $isHtml = !empty($page->html) && empty($page->markdown);
+
+        // HTML to markdown-clean conversion
+        if ($editorType === 'markdown' && $isHtml && $this->requestedEditor === 'markdown-clean') {
+            $page->markdown = (new HtmlToMarkdown($page->html))->convert();
+        }
+
+        // Markdown to HTML conversion if we don't have HTML
+        if ($editorType === 'wysiwyg' && !$isHtml) {
+            $page->html = (new MarkdownToHtml($page->markdown))->convert();
+        }
+    }
+
+    /**
+     * Get the type of editor to show for editing the given page.
+     * Defaults based upon the current content of the page otherwise will fall back
+     * to system default but will take a requested type (if provided) if permissions allow.
+     */
+    protected function getEditorType(Page $page): string
+    {
+        $editorType = $page->editor ?: self::getSystemDefaultEditor();
+
+        // Use requested editor if valid and if we have permission
+        $requestedType = explode('-', $this->requestedEditor)[0];
+        if (($requestedType === 'markdown' || $requestedType === 'wysiwyg') && userCan('editor-change')) {
+            $editorType = $requestedType;
+        }
+
+        return $editorType;
+    }
+
+    /**
+     * Get the configured system default editor.
+     */
+    public static function getSystemDefaultEditor(): string
+    {
+        return setting('app-editor') === 'markdown' ? 'markdown' : 'wysiwyg';
+    }
+}

app/Entities/Tools/PdfGenerator.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace BookStack\Entities\Tools;
+
+use Barryvdh\DomPDF\Facade as DomPDF;
+use Barryvdh\Snappy\Facades\SnappyPdf;
+
+class PdfGenerator
+{
+    const ENGINE_DOMPDF = 'dompdf';
+    const ENGINE_WKHTML = 'wkhtml';
+
+    /**
+     * Generate PDF content from the given HTML content.
+     */
+    public function fromHtml(string $html): string
+    {
+        if ($this->getActiveEngine() === self::ENGINE_WKHTML) {
+            $pdf = SnappyPDF::loadHTML($html);
+            $pdf->setOption('print-media-type', true);
+        } else {
+            $pdf = DomPDF::loadHTML($html);
+        }
+
+        return $pdf->output();
+    }
+
+    /**
+     * Get the currently active PDF engine.
+     * Returns the value of an `ENGINE_` const on this class.
+     */
+    public function getActiveEngine(): string
+    {
+        $useWKHTML = config('snappy.pdf.binary') !== false && config('app.allow_untrusted_server_fetching') === true;
+
+        return $useWKHTML ? self::ENGINE_WKHTML : self::ENGINE_DOMPDF;
+    }
+}

app/Entities/Tools/PermissionsUpdater.php

@@ -35,7 +35,7 @@ class PermissionsUpdater
         $entity->save();
         $entity->rebuildPermissions();
 
-        Activity::addForEntity($entity, ActivityType::PERMISSIONS_UPDATE);
+        Activity::add(ActivityType::PERMISSIONS_UPDATE, $entity);
     }
 
     /**

app/Entities/Tools/SearchIndex.php

@@ -9,6 +9,7 @@ use BookStack\Entities\Models\Page;
 use BookStack\Entities\Models\SearchTerm;
 use DOMDocument;
 use DOMNode;
+use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Support\Collection;
 
 class SearchIndex
@@ -67,7 +68,7 @@ class SearchIndex
      * - The number that have been processed so far.
      * - The total number of that model to be processed.
      *
-     * @param callable(Entity, int, int)|null $progressCallback
+     * @param callable(Entity, int, int):void|null $progressCallback
      */
     public function indexAllEntities(?callable $progressCallback = null)
     {
@@ -76,7 +77,9 @@ class SearchIndex
         foreach ($this->entityProvider->all() as $entityModel) {
             $indexContentField = $entityModel instanceof Page ? 'html' : 'description';
             $selectFields = ['id', 'name', $indexContentField];
-            $total = $entityModel->newQuery()->withTrashed()->count();
+            /** @var Builder<Entity> $query */
+            $query = $entityModel->newQuery();
+            $total = $query->withTrashed()->count();
             $chunkSize = 250;
             $processed = 0;
 
@@ -144,6 +147,8 @@ class SearchIndex
         ];
 
         $html = '<body>' . $html . '</body>';
+        $html = str_ireplace(['<br>', '<br />', '<br/>'], "\n", $html);
+
         libxml_use_internal_errors(true);
         $doc = new DOMDocument();
         $doc->loadHTML(mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'));
@@ -223,7 +228,7 @@ class SearchIndex
         if ($entity instanceof Page) {
             $bodyTermsMap = $this->generateTermScoreMapFromHtml($entity->html);
         } else {
-            $bodyTermsMap = $this->generateTermScoreMapFromText($entity->description ?? '', $entity->searchFactor);
+            $bodyTermsMap = $this->generateTermScoreMapFromText($entity->getAttribute('description') ?? '', $entity->searchFactor);
         }
 
         $mergedScoreMap = $this->mergeTermScoreMaps($nameTermsMap, $bodyTermsMap, $tagTermsMap);

app/Entities/Tools/SearchResultsFormatter.php

@@ -57,17 +57,17 @@ class SearchResultsFormatter
     protected function highlightTagsContainingTerms(array $tags, array $terms): void
     {
         foreach ($tags as $tag) {
-            $tagName = strtolower($tag->name);
-            $tagValue = strtolower($tag->value);
+            $tagName = mb_strtolower($tag->name);
+            $tagValue = mb_strtolower($tag->value);
 
             foreach ($terms as $term) {
-                $termLower = strtolower($term);
+                $termLower = mb_strtolower($term);
 
-                if (strpos($tagName, $termLower) !== false) {
+                if (mb_strpos($tagName, $termLower) !== false) {
                     $tag->setAttribute('highlight_name', true);
                 }
 
-                if (strpos($tagValue, $termLower) !== false) {
+                if (mb_strpos($tagValue, $termLower) !== false) {
                     $tag->setAttribute('highlight_value', true);
                 }
             }
@@ -84,17 +84,17 @@ class SearchResultsFormatter
     protected function getMatchPositions(string $text, array $terms): array
     {
         $matchRefs = [];
-        $text = strtolower($text);
+        $text = mb_strtolower($text);
 
         foreach ($terms as $term) {
             $offset = 0;
-            $term = strtolower($term);
-            $pos = strpos($text, $term, $offset);
+            $term = mb_strtolower($term);
+            $pos = mb_strpos($text, $term, $offset);
             while ($pos !== false) {
-                $end = $pos + strlen($term);
+                $end = $pos + mb_strlen($term);
                 $matchRefs[$pos] = $end;
                 $offset = $end;
-                $pos = strpos($text, $term, $offset);
+                $pos = mb_strpos($text, $term, $offset);
             }
         }
 
@@ -141,7 +141,7 @@ class SearchResultsFormatter
      */
     protected function formatTextUsingMatchPositions(array $matchPositions, string $originalText, int $targetLength): string
     {
-        $maxEnd = strlen($originalText);
+        $maxEnd = mb_strlen($originalText);
         $fetchAll = ($targetLength === 0);
         $contextLength = ($fetchAll ? 0 : 32);
 
@@ -165,7 +165,7 @@ class SearchResultsFormatter
                 $contextStart = $start;
                 // Trims off '$startDiff' number of characters to bring it back to the start
                 // if this current match zone.
-                $content = substr($content, 0, strlen($content) + $startDiff);
+                $content = mb_substr($content, 0, mb_strlen($content) + $startDiff);
                 $contentTextLength += $startDiff;
             }
 
@@ -176,16 +176,16 @@ class SearchResultsFormatter
             } elseif ($fetchAll) {
                 // Or fill in gap since the previous match
                 $fillLength = $contextStart - $lastEnd;
-                $content .= e(substr($originalText, $lastEnd, $fillLength));
+                $content .= e(mb_substr($originalText, $lastEnd, $fillLength));
                 $contentTextLength += $fillLength;
             }
 
             // Add our content including the bolded matching text
-            $content .= e(substr($originalText, $contextStart, $start - $contextStart));
+            $content .= e(mb_substr($originalText, $contextStart, $start - $contextStart));
             $contentTextLength += $start - $contextStart;
-            $content .= '<strong>' . e(substr($originalText, $start, $end - $start)) . '</strong>';
+            $content .= '<strong>' . e(mb_substr($originalText, $start, $end - $start)) . '</strong>';
             $contentTextLength += $end - $start;
-            $content .= e(substr($originalText, $end, $contextEnd - $end));
+            $content .= e(mb_substr($originalText, $end, $contextEnd - $end));
             $contentTextLength += $contextEnd - $end;
 
             // Update our last end position
@@ -204,7 +204,7 @@ class SearchResultsFormatter
 
         // Just copy out the content if we haven't moved along anywhere.
         if ($lastEnd === 0) {
-            $content = e(substr($originalText, 0, $targetLength));
+            $content = e(mb_substr($originalText, 0, $targetLength));
             $contentTextLength = $targetLength;
             $lastEnd = $targetLength;
         }
@@ -213,7 +213,7 @@ class SearchResultsFormatter
         $remainder = $targetLength - $contentTextLength;
         if ($remainder > 10) {
             $padEndLength = min($maxEnd - $lastEnd, $remainder);
-            $content .= e(substr($originalText, $lastEnd, $padEndLength));
+            $content .= e(mb_substr($originalText, $lastEnd, $padEndLength));
             $lastEnd += $padEndLength;
             $contentTextLength += $padEndLength;
         }
@@ -223,7 +223,7 @@ class SearchResultsFormatter
         $firstStart = $firstStart ?: 0;
         if (!$fetchAll && $remainder > 10 && $firstStart !== 0) {
             $padStart = max(0, $firstStart - $remainder);
-            $content = ($padStart === 0 ? '' : '...') . e(substr($originalText, $padStart, $firstStart - $padStart)) . substr($content, 4);
+            $content = ($padStart === 0 ? '' : '...') . e(mb_substr($originalText, $padStart, $firstStart - $padStart)) . mb_substr($content, 4);
         }
 
         // Add ellipsis if we're not at the end

app/Entities/Tools/SearchRunner.php

@@ -9,6 +9,7 @@ use BookStack\Entities\Models\BookChild;
 use BookStack\Entities\Models\Entity;
 use BookStack\Entities\Models\Page;
 use BookStack\Entities\Models\SearchTerm;
+use Illuminate\Database\Connection;
 use Illuminate\Database\Eloquent\Builder as EloquentBuilder;
 use Illuminate\Database\Eloquent\Collection as EloquentCollection;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
@@ -144,13 +145,13 @@ class SearchRunner
 
         if ($entityModelInstance instanceof BookChild) {
             $relations['book'] = function (BelongsTo $query) {
-                $query->visible();
+                $query->scopes('visible');
             };
         }
 
         if ($entityModelInstance instanceof Page) {
             $relations['chapter'] = function (BelongsTo $query) {
-                $query->visible();
+                $query->scopes('visible');
             };
         }
 
@@ -356,8 +357,10 @@ class SearchRunner
                     // We have to do a raw sql query for this since otherwise PDO will quote the value and MySQL will
                     // search the value as a string which prevents being able to do number-based operations
                     // on the tag values. We ensure it has a numeric value and then cast it just to be sure.
-                    $tagValue = (float) trim($query->getConnection()->getPdo()->quote($tagValue), "'");
-                    $query->whereRaw("value ${tagOperator} ${tagValue}");
+                    /** @var Connection $connection */
+                    $connection = $query->getConnection();
+                    $tagValue = (float) trim($connection->getPdo()->quote($tagValue), "'");
+                    $query->whereRaw("value {$tagOperator} {$tagValue}");
                 } else {
                     $query->where('value', $tagOperator, $tagValue);
                 }

app/Entities/Tools/SiblingFetcher.php

@@ -5,6 +5,7 @@ namespace BookStack\Entities\Tools;
 use BookStack\Entities\EntityProvider;
 use BookStack\Entities\Models\Book;
 use BookStack\Entities\Models\Bookshelf;
+use BookStack\Entities\Models\Chapter;
 use BookStack\Entities\Models\Page;
 use Illuminate\Support\Collection;
 
@@ -24,7 +25,7 @@ class SiblingFetcher
         }
 
         // Page in book or chapter
-        if (($entity instanceof Page && !$entity->chapter) || $entity->isA('chapter')) {
+        if (($entity instanceof Page && !$entity->chapter) || $entity instanceof Chapter) {
             $entities = $entity->book->getDirectChildren();
         }
 

app/Entities/Tools/TrashCan.php

@@ -15,15 +15,19 @@ use BookStack\Facades\Activity;
 use BookStack\Uploads\AttachmentService;
 use BookStack\Uploads\ImageService;
 use Exception;
+use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Support\Carbon;
 
 class TrashCan
 {
     /**
      * Send a shelf to the recycle bin.
+     *
+     * @throws NotifyException
      */
     public function softDestroyShelf(Bookshelf $shelf)
     {
+        $this->ensureDeletable($shelf);
         Deletion::createForEntity($shelf);
         $shelf->delete();
     }
@@ -35,6 +39,7 @@ class TrashCan
      */
     public function softDestroyBook(Book $book)
     {
+        $this->ensureDeletable($book);
         Deletion::createForEntity($book);
 
         foreach ($book->pages as $page) {
@@ -56,6 +61,7 @@ class TrashCan
     public function softDestroyChapter(Chapter $chapter, bool $recordDelete = true)
     {
         if ($recordDelete) {
+            $this->ensureDeletable($chapter);
             Deletion::createForEntity($chapter);
         }
 
@@ -76,19 +82,47 @@ class TrashCan
     public function softDestroyPage(Page $page, bool $recordDelete = true)
     {
         if ($recordDelete) {
+            $this->ensureDeletable($page);
             Deletion::createForEntity($page);
         }
 
-        // Check if set as custom homepage & remove setting if not used or throw error if active
-        $customHome = setting('app-homepage', '0:');
-        if (intval($page->id) === intval(explode(':', $customHome)[0])) {
-            if (setting('app-homepage-type') === 'page') {
-                throw new NotifyException(trans('errors.page_custom_home_deletion'), $page->getUrl());
+        $page->delete();
+    }
+
+    /**
+     * Ensure the given entity is deletable.
+     * Is not for permissions, but logical conditions within the application.
+     * Will throw if not deletable.
+     *
+     * @throws NotifyException
+     */
+    protected function ensureDeletable(Entity $entity): void
+    {
+        $customHomeId = intval(explode(':', setting('app-homepage', '0:'))[0]);
+        $customHomeActive = setting('app-homepage-type') === 'page';
+        $removeCustomHome = false;
+
+        // Check custom homepage usage for pages
+        if ($entity instanceof Page && $entity->id === $customHomeId) {
+            if ($customHomeActive) {
+                throw new NotifyException(trans('errors.page_custom_home_deletion'), $entity->getUrl());
             }
-            setting()->remove('app-homepage');
+            $removeCustomHome = true;
         }
 
-        $page->delete();
+        // Check custom homepage usage within chapters or books
+        if ($entity instanceof Chapter || $entity instanceof Book) {
+            if ($entity->pages()->where('id', '=', $customHomeId)->exists()) {
+                if ($customHomeActive) {
+                    throw new NotifyException(trans('errors.page_custom_home_deletion'), $entity->getUrl());
+                }
+                $removeCustomHome = true;
+            }
+        }
+
+        if ($removeCustomHome) {
+            setting()->remove('app-homepage');
+        }
     }
 
     /**
@@ -141,11 +175,9 @@ class TrashCan
     {
         $count = 0;
         $pages = $chapter->pages()->withTrashed()->get();
-        if (count($pages)) {
-            foreach ($pages as $page) {
-                $this->destroyPage($page);
-                $count++;
-            }
+        foreach ($pages as $page) {
+            $this->destroyPage($page);
+            $count++;
         }
 
         $this->destroyCommonRelations($chapter);
@@ -183,9 +215,10 @@ class TrashCan
     {
         $counts = [];
 
-        /** @var Entity $instance */
         foreach ((new EntityProvider())->all() as $key => $instance) {
-            $counts[$key] = $instance->newQuery()->onlyTrashed()->count();
+            /** @var Builder<Entity> $query */
+            $query = $instance->newQuery();
+            $counts[$key] = $query->onlyTrashed()->count();
         }
 
         return $counts;
@@ -235,13 +268,15 @@ class TrashCan
     {
         $shouldRestore = true;
         $restoreCount = 0;
-        $parent = $deletion->deletable->getParent();
 
-        if ($parent && $parent->trashed()) {
-            $shouldRestore = false;
+        if ($deletion->deletable instanceof Entity) {
+            $parent = $deletion->deletable->getParent();
+            if ($parent && $parent->trashed()) {
+                $shouldRestore = false;
+            }
         }
 
-        if ($shouldRestore) {
+        if ($deletion->deletable instanceof Entity && $shouldRestore) {
             $restoreCount = $this->restoreEntity($deletion->deletable);
         }
 
@@ -309,7 +344,7 @@ class TrashCan
      *
      * @throws Exception
      */
-    protected function destroyEntity(Entity $entity): int
+    public function destroyEntity(Entity $entity): int
     {
         if ($entity instanceof Page) {
             return $this->destroyPage($entity);
@@ -342,9 +377,9 @@ class TrashCan
         $entity->deletions()->delete();
         $entity->favourites()->delete();
 
-        if ($entity instanceof HasCoverImage && $entity->cover) {
+        if ($entity instanceof HasCoverImage && $entity->cover()->exists()) {
             $imageService = app()->make(ImageService::class);
-            $imageService->destroy($entity->cover);
+            $imageService->destroy($entity->cover()->first());
         }
     }
 }

app/Exceptions/Handler.php

@@ -4,6 +4,7 @@ namespace BookStack\Exceptions;
 
 use Exception;
 use Illuminate\Auth\AuthenticationException;
+use Illuminate\Database\Eloquent\ModelNotFoundException;
 use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
@@ -20,6 +21,7 @@ class Handler extends ExceptionHandler
      */
     protected $dontReport = [
         NotFoundException::class,
+        StoppedAuthenticationException::class,
     ];
 
     /**
@@ -75,15 +77,20 @@ class Handler extends ExceptionHandler
     /**
      * Render an exception when the API is in use.
      */
-    protected function renderApiException(Exception $e): JsonResponse
+    protected function renderApiException(Throwable $e): JsonResponse
     {
-        $code = $e->getCode() === 0 ? 500 : $e->getCode();
+        $code = 500;
         $headers = [];
+
         if ($e instanceof HttpException) {
             $code = $e->getStatusCode();
             $headers = $e->getHeaders();
         }
 
+        if ($e instanceof ModelNotFoundException) {
+            $code = 404;
+        }
+
         $responseData = [
             'error' => [
                 'message' => $e->getMessage(),
@@ -95,6 +102,10 @@ class Handler extends ExceptionHandler
             $code = $e->status;
         }
 
+        if (method_exists($e, 'getStatus')) {
+            $code = $e->getStatus();
+        }
+
         $responseData['error']['code'] = $code;
 
         return new JsonResponse($responseData, $code, $headers);

app/Exceptions/JsonDebugException.php

@@ -3,24 +3,29 @@
 namespace BookStack\Exceptions;
 
 use Exception;
+use Illuminate\Http\JsonResponse;
 
 class JsonDebugException extends Exception
 {
-    protected $data;
+    protected array $data;
 
     /**
      * JsonDebugException constructor.
      */
-    public function __construct($data)
+    public function __construct(array $data)
     {
         $this->data = $data;
+        parent::__construct();
     }
 
     /**
-     * Covert this exception into a response.
+     * Convert this exception into a response.
+     * We add a manual data conversion to UTF8 to ensure any binary data is presentable as a JSON string.
      */
-    public function render()
+    public function render(): JsonResponse
     {
-        return response()->json($this->data);
+        $cleaned = mb_convert_encoding($this->data, 'UTF-8');
+
+        return response()->json($cleaned);
     }
 }

app/Exceptions/NotifyException.php

@@ -9,17 +9,24 @@ class NotifyException extends Exception implements Responsable
 {
     public $message;
     public $redirectLocation;
+    protected $status;
 
-    /**
-     * NotifyException constructor.
-     */
-    public function __construct(string $message, string $redirectLocation = '/')
+    public function __construct(string $message, string $redirectLocation = '/', int $status = 500)
     {
         $this->message = $message;
         $this->redirectLocation = $redirectLocation;
+        $this->status = $status;
         parent::__construct();
     }
 
+    /**
+     * Get the desired status code for this exception.
+     */
+    public function getStatus(): int
+    {
+        return $this->status;
+    }
+
     /**
      * Send the response for this type of exception.
      *
@@ -29,6 +36,11 @@ class NotifyException extends Exception implements Responsable
     {
         $message = $this->getMessage();
 
+        // Front-end JSON handling. API-side handling managed via handler.
+        if ($request->wantsJson()) {
+            return response()->json(['error' => $message], 403);
+        }
+
         if (!empty($message)) {
             session()->flash('error', $message);
         }

app/Exceptions/OpenIdConnectException.php

@@ -1,7 +0,0 @@
-<?php
-
-namespace BookStack\Exceptions;
-
-class OpenIdConnectException extends NotifyException
-{
-}

app/Exceptions/SortOperationException.php

@@ -1,9 +0,0 @@
-<?php
-
-namespace BookStack\Exceptions;
-
-use Exception;
-
-class SortOperationException extends Exception
-{
-}

app/Facades/Activity.php

@@ -4,6 +4,9 @@ namespace BookStack\Facades;
 
 use Illuminate\Support\Facades\Facade;
 
+/**
+ * @see \BookStack\Actions\ActivityLogger
+ */
 class Activity extends Facade
 {
     /**

app/Http/Controllers/Api/ApiController.php

@@ -15,10 +15,14 @@ abstract class ApiController extends Controller
      * Provide a paginated listing JSON response in a standard format
      * taking into account any pagination parameters passed by the user.
      */
-    protected function apiListingResponse(Builder $query, array $fields): JsonResponse
+    protected function apiListingResponse(Builder $query, array $fields, array $modifiers = []): JsonResponse
     {
         $listing = new ListingResponseBuilder($query, request(), $fields);
 
+        foreach ($modifiers as $modifier) {
+            $listing->modifyResults($modifier);
+        }
+
         return $listing->toResponse();
     }
 
@@ -26,7 +30,7 @@ abstract class ApiController extends Controller
      * Get the validation rules for this controller.
      * Defaults to a $rules property but can be a rules() method.
      */
-    public function getValdationRules(): array
+    public function getValidationRules(): array
     {
         if (method_exists($this, 'rules')) {
             return $this->rules();

app/Http/Controllers/Api/AttachmentApiController.php

@@ -87,14 +87,33 @@ class AttachmentApiController extends ApiController
             'markdown' => $attachment->markdownLink(),
         ]);
 
-        if (!$attachment->external) {
-            $attachmentContents = $this->attachmentService->getAttachmentFromStorage($attachment);
-            $attachment->setAttribute('content', base64_encode($attachmentContents));
-        } else {
+        // Simply return a JSON response of the attachment for link-based attachments
+        if ($attachment->external) {
             $attachment->setAttribute('content', $attachment->path);
+
+            return response()->json($attachment);
         }
 
-        return response()->json($attachment);
+        // Build and split our core JSON, at point of content.
+        $splitter = 'CONTENT_SPLIT_LOCATION_' . time() . '_' . rand(1, 40000);
+        $attachment->setAttribute('content', $splitter);
+        $json = $attachment->toJson();
+        $jsonParts = explode($splitter, $json);
+        // Get a stream for the file data from storage
+        $stream = $this->attachmentService->streamAttachmentFromStorage($attachment);
+
+        return response()->stream(function () use ($jsonParts, $stream) {
+            // Output the pre-content JSON data
+            echo $jsonParts[0];
+
+            // Stream out our attachment data as base64 content
+            stream_filter_append($stream, 'convert.base64-encode', STREAM_FILTER_READ);
+            fpassthru($stream);
+            fclose($stream);
+
+            // Output our post-content JSON data
+            echo $jsonParts[1];
+        }, 200, ['Content-Type' => 'application/json']);
     }
 
     /**

app/Http/Controllers/Api/BookApiController.php

@@ -11,19 +11,6 @@ class BookApiController extends ApiController
 {
     protected $bookRepo;
 
-    protected $rules = [
-        'create' => [
-            'name'        => ['required', 'string', 'max:255'],
-            'description' => ['string', 'max:1000'],
-            'tags'        => ['array'],
-        ],
-        'update' => [
-            'name'        => ['string', 'min:1', 'max:255'],
-            'description' => ['string', 'max:1000'],
-            'tags'        => ['array'],
-        ],
-    ];
-
     public function __construct(BookRepo $bookRepo)
     {
         $this->bookRepo = $bookRepo;
@@ -37,19 +24,21 @@ class BookApiController extends ApiController
         $books = Book::visible();
 
         return $this->apiListingResponse($books, [
-            'id', 'name', 'slug', 'description', 'created_at', 'updated_at', 'created_by', 'updated_by', 'owned_by', 'image_id',
+            'id', 'name', 'slug', 'description', 'created_at', 'updated_at', 'created_by', 'updated_by', 'owned_by',
         ]);
     }
 
     /**
      * Create a new book in the system.
+     * The cover image of a book can be set by sending a file via an 'image' property within a 'multipart/form-data' request.
+     * If the 'image' property is null then the book cover image will be removed.
      *
      * @throws ValidationException
      */
     public function create(Request $request)
     {
         $this->checkPermission('book-create-all');
-        $requestData = $this->validate($request, $this->rules['create']);
+        $requestData = $this->validate($request, $this->rules()['create']);
 
         $book = $this->bookRepo->create($requestData);
 
@@ -68,6 +57,8 @@ class BookApiController extends ApiController
 
     /**
      * Update the details of a single book.
+     * The cover image of a book can be set by sending a file via an 'image' property within a 'multipart/form-data' request.
+     * If the 'image' property is null then the book cover image will be removed.
      *
      * @throws ValidationException
      */
@@ -76,7 +67,7 @@ class BookApiController extends ApiController
         $book = Book::visible()->findOrFail($id);
         $this->checkOwnablePermission('book-update', $book);
 
-        $requestData = $this->validate($request, $this->rules['update']);
+        $requestData = $this->validate($request, $this->rules()['update']);
         $book = $this->bookRepo->update($book, $requestData);
 
         return response()->json($book);
@@ -97,4 +88,22 @@ class BookApiController extends ApiController
 
         return response('', 204);
     }
+
+    protected function rules(): array
+    {
+        return [
+            'create' => [
+                'name'        => ['required', 'string', 'max:255'],
+                'description' => ['string', 'max:1000'],
+                'tags'        => ['array'],
+                'image'       => array_merge(['nullable'], $this->getImageValidationRules()),
+            ],
+            'update' => [
+                'name'        => ['string', 'min:1', 'max:255'],
+                'description' => ['string', 'max:1000'],
+                'tags'        => ['array'],
+                'image'       => array_merge(['nullable'], $this->getImageValidationRules()),
+            ],
+        ];
+    }
 }

app/Http/Controllers/Api/BookExportApiController.php

@@ -26,7 +26,7 @@ class BookExportApiController extends ApiController
         $book = Book::visible()->findOrFail($id);
         $pdfContent = $this->exportFormatter->bookToPdf($book);
 
-        return $this->downloadResponse($pdfContent, $book->slug . '.pdf');
+        return $this->download()->directly($pdfContent, $book->slug . '.pdf');
     }
 
     /**
@@ -39,7 +39,7 @@ class BookExportApiController extends ApiController
         $book = Book::visible()->findOrFail($id);
         $htmlContent = $this->exportFormatter->bookToContainedHtml($book);
 
-        return $this->downloadResponse($htmlContent, $book->slug . '.html');
+        return $this->download()->directly($htmlContent, $book->slug . '.html');
     }
 
     /**
@@ -50,7 +50,7 @@ class BookExportApiController extends ApiController
         $book = Book::visible()->findOrFail($id);
         $textContent = $this->exportFormatter->bookToPlainText($book);
 
-        return $this->downloadResponse($textContent, $book->slug . '.txt');
+        return $this->download()->directly($textContent, $book->slug . '.txt');
     }
 
     /**
@@ -61,6 +61,6 @@ class BookExportApiController extends ApiController
         $book = Book::visible()->findOrFail($id);
         $markdown = $this->exportFormatter->bookToMarkdown($book);
 
-        return $this->downloadResponse($markdown, $book->slug . '.md');
+        return $this->download()->directly($markdown, $book->slug . '.md');
     }
 }