switch returns

Enhance API call robustness and user feedback in misc/tools.func: add explicit handling for HTTP 401 (authentication) and 000/no-response cases, provide clearer error messages and actionable guidance (e.g. export GITHUB_TOKEN, check network/DNS), and preserve retry/backoff logic. Adjusted curl invocation/error capture to avoid echoing sentinel values and updated messages for 403/404/other HTTP errors. Changes touch github_api_call, codeberg_api_call, get_latest_gh_tag, check_for_gh_release, and fetch_and_deploy_gh_release to fail earlier and clean up temp files on errors.

CHANGELOG.md

@@ -409,6 +409,10 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
 ## 2026-02-25
 
+### 🆕 New Scripts
+
+  - Zerobyte ([#12321](https://github.com/community-scripts/ProxmoxVE/pull/12321))
+
 ### 🚀 Updated Scripts
 
   - #### 🐞 Bug Fixes

misc/tools.func

@@ -783,16 +783,25 @@ github_api_call() {
 
   for attempt in $(seq 1 $max_retries); do
     local http_code
-    http_code=$(curl -fsSL -w "%{http_code}" -o "$output_file" \
+    http_code=$(curl -sSL -w "%{http_code}" -o "$output_file" \
       -H "Accept: application/vnd.github+json" \
       -H "X-GitHub-Api-Version: 2022-11-28" \
       "${header_args[@]}" \
-      "$url" 2>/dev/null || echo "000")
+      "$url" 2>/dev/null) || true
 
     case "$http_code" in
     200)
       return 0
       ;;
+    401)
+      msg_error "GitHub API authentication failed (HTTP 401)."
+      if [[ -n "${GITHUB_TOKEN:-}" ]]; then
+        msg_error "Your GITHUB_TOKEN appears to be invalid or expired."
+      else
+        msg_error "The repository may require authentication. Try: export GITHUB_TOKEN=\"ghp_your_token\""
+      fi
+      return 1
+      ;;
     403)
       # Rate limit - check if we can retry
       if [[ $attempt -lt $max_retries ]]; then
@@ -801,11 +810,22 @@ github_api_call() {
         retry_delay=$((retry_delay * 2))
         continue
       fi
-      msg_error "GitHub API rate limit exceeded. Set GITHUB_TOKEN to increase limits."
+      msg_error "GitHub API rate limit exceeded (HTTP 403)."
+      msg_error "To increase the limit, export a GitHub token before running the script:"
+      msg_error "  export GITHUB_TOKEN=\"ghp_your_token_here\""
       return 1
       ;;
     404)
-      msg_error "GitHub API endpoint not found: $url"
+      msg_error "GitHub repository or release not found (HTTP 404): $url"
+      return 1
+      ;;
+    000 | "")
+      if [[ $attempt -lt $max_retries ]]; then
+        sleep "$retry_delay"
+        continue
+      fi
+      msg_error "GitHub API connection failed (no response)."
+      msg_error "Check your network/DNS: curl -sSL https://api.github.com/rate_limit"
       return 1
       ;;
     *)
@@ -813,7 +833,7 @@ github_api_call() {
         sleep "$retry_delay"
         continue
       fi
-      msg_error "GitHub API call failed with HTTP $http_code"
+      msg_error "GitHub API call failed (HTTP $http_code)."
       return 1
       ;;
     esac
@@ -833,14 +853,18 @@ codeberg_api_call() {
 
   for attempt in $(seq 1 $max_retries); do
     local http_code
-    http_code=$(curl -fsSL -w "%{http_code}" -o "$output_file" \
+    http_code=$(curl -sSL -w "%{http_code}" -o "$output_file" \
       -H "Accept: application/json" \
-      "$url" 2>/dev/null || echo "000")
+      "$url" 2>/dev/null) || true
 
     case "$http_code" in
     200)
       return 0
       ;;
+    401)
+      msg_error "Codeberg API authentication failed (HTTP 401)."
+      return 1
+      ;;
     403)
       # Rate limit - retry
       if [[ $attempt -lt $max_retries ]]; then
@@ -849,11 +873,20 @@ codeberg_api_call() {
         retry_delay=$((retry_delay * 2))
         continue
       fi
-      msg_error "Codeberg API rate limit exceeded."
+      msg_error "Codeberg API rate limit exceeded (HTTP 403)."
       return 1
       ;;
     404)
-      msg_error "Codeberg API endpoint not found: $url"
+      msg_error "Codeberg repository or release not found (HTTP 404): $url"
+      return 1
+      ;;
+    000 | "")
+      if [[ $attempt -lt $max_retries ]]; then
+        sleep "$retry_delay"
+        continue
+      fi
+      msg_error "Codeberg API connection failed (no response)."
+      msg_error "Check your network/DNS: curl -sSL https://codeberg.org"
       return 1
       ;;
     *)
@@ -861,7 +894,7 @@ codeberg_api_call() {
         sleep "$retry_delay"
         continue
       fi
-      msg_error "Codeberg API call failed with HTTP $http_code"
+      msg_error "Codeberg API call failed (HTTP $http_code)."
       return 1
       ;;
     esac
@@ -1441,7 +1474,7 @@ get_latest_github_release() {
 
   if ! github_api_call "https://api.github.com/repos/${repo}/releases/latest" "$temp_file"; then
     rm -f "$temp_file"
-    return 1
+    return 0
   fi
 
   local version
@@ -1449,7 +1482,8 @@ get_latest_github_release() {
   rm -f "$temp_file"
 
   if [[ -z "$version" ]]; then
-    return 1
+    msg_error "Could not determine latest version for ${repo}"
+    return 0
   fi
 
   echo "$version"
@@ -1466,7 +1500,7 @@ get_latest_codeberg_release() {
   # Codeberg API: get all releases and pick the first non-draft/non-prerelease
   if ! codeberg_api_call "https://codeberg.org/api/v1/repos/${repo}/releases" "$temp_file"; then
     rm -f "$temp_file"
-    return 1
+    return 0
   fi
 
   local version
@@ -1480,7 +1514,8 @@ get_latest_codeberg_release() {
   rm -f "$temp_file"
 
   if [[ -z "$version" ]]; then
-    return 1
+    msg_error "Could not determine latest version for ${repo}"
+    return 0
   fi
 
   echo "$version"
@@ -1567,13 +1602,34 @@ get_latest_gh_tag() {
     "${header_args[@]}" \
     "https://api.github.com/repos/${repo}/tags?per_page=100" 2>/dev/null) || true
 
+  if [[ "$http_code" == "401" ]]; then
+    msg_error "GitHub API authentication failed (HTTP 401)."
+    if [[ -n "${GITHUB_TOKEN:-}" ]]; then
+      msg_error "Your GITHUB_TOKEN appears to be invalid or expired."
+    else
+      msg_error "The repository may require authentication. Try: export GITHUB_TOKEN=\"ghp_your_token\""
+    fi
+    rm -f /tmp/gh_tags.json
+    return 1
+  fi
+
   if [[ "$http_code" == "403" ]]; then
-    msg_warn "GitHub API rate limit exceeded while fetching tags for ${repo}"
+    msg_error "GitHub API rate limit exceeded (HTTP 403)."
+    msg_error "To increase the limit, export a GitHub token before running the script:"
+    msg_error "  export GITHUB_TOKEN=\"ghp_your_token_here\""
+    rm -f /tmp/gh_tags.json
+    return 1
+  fi
+
+  if [[ "$http_code" == "000" || -z "$http_code" ]]; then
+    msg_error "GitHub API connection failed (no response)."
+    msg_error "Check your network/DNS: curl -sSL https://api.github.com/rate_limit"
     rm -f /tmp/gh_tags.json
     return 1
   fi
 
   if [[ "$http_code" != "200" ]] || [[ ! -s /tmp/gh_tags.json ]]; then
+    msg_error "Unable to fetch tags for ${repo} (HTTP ${http_code})"
     rm -f /tmp/gh_tags.json
     return 1
   fi
@@ -1659,6 +1715,15 @@ check_for_gh_release() {
 
     if [[ "$http_code" == "200" ]] && [[ -s /tmp/gh_check.json ]]; then
       releases_json="[$(</tmp/gh_check.json)]"
+    elif [[ "$http_code" == "401" ]]; then
+      msg_error "GitHub API authentication failed (HTTP 401)."
+      if [[ -n "${GITHUB_TOKEN:-}" ]]; then
+        msg_error "Your GITHUB_TOKEN appears to be invalid or expired."
+      else
+        msg_error "The repository may require authentication. Try: export GITHUB_TOKEN=\"ghp_your_token\""
+      fi
+      rm -f /tmp/gh_check.json
+      return 1
     elif [[ "$http_code" == "403" ]]; then
       msg_error "GitHub API rate limit exceeded (HTTP 403)."
       msg_error "To increase the limit, export a GitHub token before running the script:"
@@ -1679,12 +1744,26 @@ check_for_gh_release() {
 
     if [[ "$http_code" == "200" ]] && [[ -s /tmp/gh_check.json ]]; then
       releases_json=$(</tmp/gh_check.json)
+    elif [[ "$http_code" == "401" ]]; then
+      msg_error "GitHub API authentication failed (HTTP 401)."
+      if [[ -n "${GITHUB_TOKEN:-}" ]]; then
+        msg_error "Your GITHUB_TOKEN appears to be invalid or expired."
+      else
+        msg_error "The repository may require authentication. Try: export GITHUB_TOKEN=\"ghp_your_token\""
+      fi
+      rm -f /tmp/gh_check.json
+      return 1
     elif [[ "$http_code" == "403" ]]; then
       msg_error "GitHub API rate limit exceeded (HTTP 403)."
       msg_error "To increase the limit, export a GitHub token before running the script:"
       msg_error "  export GITHUB_TOKEN=\"ghp_your_token_here\""
       rm -f /tmp/gh_check.json
       return 1
+    elif [[ "$http_code" == "000" || -z "$http_code" ]]; then
+      msg_error "GitHub API connection failed (no response)."
+      msg_error "Check your network/DNS: curl -sSL https://api.github.com/rate_limit"
+      rm -f /tmp/gh_check.json
+      return 1
     else
       msg_error "Unable to fetch releases for ${app} (HTTP ${http_code})"
       rm -f /tmp/gh_check.json
@@ -2608,12 +2687,22 @@ function fetch_and_deploy_gh_release() {
   done
 
   if ! $success; then
-    if [[ "$http_code" == "403" ]]; then
+    if [[ "$http_code" == "401" ]]; then
+      msg_error "GitHub API authentication failed (HTTP 401)."
+      if [[ -n "${GITHUB_TOKEN:-}" ]]; then
+        msg_error "Your GITHUB_TOKEN appears to be invalid or expired."
+      else
+        msg_error "The repository may require authentication. Try: export GITHUB_TOKEN=\"ghp_your_token\""
+      fi
+    elif [[ "$http_code" == "403" ]]; then
       msg_error "GitHub API rate limit exceeded (HTTP 403)."
       msg_error "To increase the limit, export a GitHub token before running the script:"
       msg_error "  export GITHUB_TOKEN=\"ghp_your_token_here\""
+    elif [[ "$http_code" == "000" || -z "$http_code" ]]; then
+      msg_error "GitHub API connection failed (no response)."
+      msg_error "Check your network/DNS: curl -sSL https://api.github.com/rate_limit"
     else
-      msg_error "Failed to fetch release metadata from $api_url after $max_retries attempts (HTTP $http_code)"
+      msg_error "Failed to fetch release metadata (HTTP $http_code)"
     fi
     return 1
   fi