Some syntax errors fixed. Syntax checking added. Release checklist created.

tools/clipboard_sync.sh

@@ -0,0 +1,105 @@
+#!/bin/bash
+
+# Fenrir X11 Clipboard Sync
+# Synchronizes between X11 clipboard and Fenrir clipboard file
+# Prevents loops using checksums and timestamps
+
+# Check for root privileges
+if [[ $(whoami) != "root" ]]; then
+    echo "Error: This script must be run as root to access Fenrir's clipboard file"
+    echo "Run with: sudo DISPLAY=:0 ./clipboard_sync.sh"
+    exit 1
+fi
+
+FENRIR_CLIPBOARD_FILE="${1:-/tmp/fenrirClipboard}"
+STATE_FILE="/var/tmp/.fenrir_clipboard_state"
+
+# Simple state tracking without complex locking
+get_file_checksum() {
+    if [[ -f "$FENRIR_CLIPBOARD_FILE" ]]; then
+        md5sum "$FENRIR_CLIPBOARD_FILE" 2>/dev/null | cut -d' ' -f1
+    else
+        echo ""
+    fi
+}
+
+get_clipboard_checksum() {
+    xclip -o -selection clipboard 2>/dev/null | md5sum | cut -d' ' -f1
+}
+
+# Initialize state
+rm -f "$STATE_FILE" 2>/dev/null
+
+echo "Starting Fenrir clipboard sync..."
+echo "Monitoring file: $FENRIR_CLIPBOARD_FILE"
+
+# Check dependencies
+if ! command -v xclip >/dev/null 2>&1; then
+    echo "Error: xclip is required but not installed"
+    echo "Install with: sudo apt install xclip"
+    exit 1
+fi
+
+if ! command -v inotifywait >/dev/null 2>&1; then
+    echo "Error: inotify-tools is required but not installed"
+    echo "Install with: sudo apt install inotify-tools"
+    exit 1
+fi
+
+# Create clipboard file if it doesn't exist
+touch "$FENRIR_CLIPBOARD_FILE"
+
+echo "Starting Fenrir clipboard sync..."
+
+while true; do
+    # Read last state
+    if [[ -f "$STATE_FILE" ]]; then
+        read -r LAST_FILE_CHECKSUM LAST_CLIPBOARD_CHECKSUM LAST_UPDATE_TIME < "$STATE_FILE"
+    else
+        LAST_FILE_CHECKSUM=""
+        LAST_CLIPBOARD_CHECKSUM=""
+        LAST_UPDATE_TIME="0"
+    fi
+    
+    # Get current checksums
+    CURRENT_FILE_CHECKSUM=$(get_file_checksum)
+    CURRENT_CLIPBOARD_CHECKSUM=$(get_clipboard_checksum)
+    CURRENT_TIME=$(date +%s)
+    
+    # Skip update if we just made one (prevent immediate loops)
+    TIME_SINCE_LAST=$((CURRENT_TIME - LAST_UPDATE_TIME))
+    if [[ $TIME_SINCE_LAST -lt 3 ]]; then
+        sleep 1
+        continue
+    fi
+    
+    # Clipboard changed
+    if [[ "$CURRENT_CLIPBOARD_CHECKSUM" != "$LAST_CLIPBOARD_CHECKSUM" ]]; then
+        echo "X11 clipboard changed, updating file..."
+        if xclip -o -selection clipboard > "$FENRIR_CLIPBOARD_FILE" 2>/dev/null; then
+            CURRENT_FILE_CHECKSUM=$(get_file_checksum)
+            echo "$CURRENT_FILE_CHECKSUM $CURRENT_CLIPBOARD_CHECKSUM $CURRENT_TIME" > "$STATE_FILE"
+            echo "File updated successfully"
+        else
+            echo "Failed to update file from clipboard"
+        fi
+        sleep 1
+        continue
+    fi
+    
+    # File changed
+    if [[ "$CURRENT_FILE_CHECKSUM" != "$LAST_FILE_CHECKSUM" ]]; then
+        echo "Fenrir clipboard file changed, updating X11 clipboard..."
+        if cat "$FENRIR_CLIPBOARD_FILE" | xclip -i -selection clipboard 2>/dev/null; then
+            CURRENT_CLIPBOARD_CHECKSUM=$(get_clipboard_checksum)
+            echo "$CURRENT_FILE_CHECKSUM $CURRENT_CLIPBOARD_CHECKSUM $CURRENT_TIME" > "$STATE_FILE"
+            echo "X11 clipboard updated successfully"
+        else
+            echo "Failed to update clipboard from file"
+        fi
+        sleep 1
+        continue
+    fi
+    
+    sleep 1
+done