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faff8ba349
* Initial plan * fix: format shell scripts with shfmt (convert tabs to 2 spaces) Co-authored-by: kuhyx <147418882+kuhyx@users.noreply.github.com> * feat: enhance shell-check workflow for PR pre-merge validation - Add pull_request_target trigger to check PRs from forks - Add explicit failure message with instructions - Create BRANCH_PROTECTION.md with setup guide - Ensure workflow runs on all PRs targeting main/master Co-authored-by: kuhyx <147418882+kuhyx@users.noreply.github.com> * refactor: improve workflow security and remove redundant exit code - Remove pull_request_target to avoid executing untrusted fork code - Remove redundant exit 1 from failure step - Update documentation to reflect changes - Standard pull_request trigger handles forks securely Co-authored-by: kuhyx <147418882+kuhyx@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: kuhyx <147418882+kuhyx@users.noreply.github.com>
103 lines
3.0 KiB
Bash
Executable File
103 lines
3.0 KiB
Bash
Executable File
#!/system/bin/sh
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# Android Guardian Service - runs at boot
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# This service:
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# 1. Monitors and protects the hosts file
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# 2. Blocks installation of forbidden apps
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# 3. Prevents module from being disabled via Magisk UI
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# 4. Can only be stopped via ADB with the correct command
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MODDIR=${0%/*}
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GUARDIAN_DIR="/data/adb/android_guardian"
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LOG_FILE="$GUARDIAN_DIR/guardian.log"
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BLOCKED_APPS_FILE="$GUARDIAN_DIR/blocked_apps.txt"
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CONTROL_FILE="$GUARDIAN_DIR/control"
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HOSTS_BACKUP="$GUARDIAN_DIR/hosts.backup"
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MODULE_DIR="/data/adb/modules/android_guardian"
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DISABLE_FILE="$MODULE_DIR/disable"
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REMOVE_FILE="$MODULE_DIR/remove"
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# Ensure guardian directory exists
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mkdir -p "$GUARDIAN_DIR"
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log() {
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*" >> "$LOG_FILE"
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}
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# Initialize control file if not exists
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[ ! -f "$CONTROL_FILE" ] && echo "ENABLED" > "$CONTROL_FILE"
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log "=== Android Guardian starting ==="
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# Function to check if guardian is enabled (via ADB control, not Magisk UI)
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is_enabled() {
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[ "$(cat "$CONTROL_FILE" 2> /dev/null)" = "ENABLED" ]
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}
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# Function to protect module from being disabled via Magisk UI
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protect_module() {
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# Remove disable file if someone tried to disable via Magisk
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if [ -f "$DISABLE_FILE" ]; then
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log "Module disable attempt detected via Magisk UI! Re-enabling..."
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rm -f "$DISABLE_FILE"
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log "Module re-enabled"
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fi
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# Remove remove file if someone tried to uninstall via Magisk
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if [ -f "$REMOVE_FILE" ]; then
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log "Module removal attempt detected via Magisk UI! Blocking..."
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rm -f "$REMOVE_FILE"
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log "Module removal blocked"
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fi
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}
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# Function to restore hosts file if tampered
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protect_hosts() {
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if [ -f "$HOSTS_BACKUP" ]; then
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current_hash=$(md5sum /system/etc/hosts 2> /dev/null | cut -d' ' -f1)
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backup_hash=$(md5sum "$HOSTS_BACKUP" 2> /dev/null | cut -d' ' -f1)
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if [ "$current_hash" != "$backup_hash" ]; then
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log "Hosts file tampering detected! Restoring..."
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cp "$HOSTS_BACKUP" "$MODDIR/system/etc/hosts"
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log "Hosts file restored"
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fi
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fi
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}
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# Function to uninstall blocked apps
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check_blocked_apps() {
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if [ ! -f "$BLOCKED_APPS_FILE" ]; then
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return
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fi
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while IFS= read -r package || [ -n "$package" ]; do
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# Skip comments and empty lines
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case "$package" in
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\#* | "") continue ;;
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esac
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# Check if package is installed
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if pm list packages 2> /dev/null | grep -q "package:$package"; then
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log "Blocked app detected: $package - Uninstalling..."
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pm uninstall "$package" 2> /dev/null && log "Uninstalled: $package" || log "Failed to uninstall: $package"
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fi
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done < "$BLOCKED_APPS_FILE"
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}
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# Main monitoring loop - runs every 5 seconds for faster protection
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while true; do
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# ALWAYS protect module from UI disabling (even if guardian is "disabled" via ADB)
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# This ensures only ADB can control the guardian
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protect_module
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if is_enabled; then
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protect_hosts
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check_blocked_apps
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fi
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# Check every 5 seconds (faster response to disable attempts)
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sleep 5
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done &
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log "Guardian service started (PID: $!)"
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