Reorganization to hopefully prevent git conflicts.

modules/nick/nick.sh

@@ -4,8 +4,35 @@
 user=$1
 shift
 shift
-if [[ "$user" =~ $allowList ]]; then
-    ./modules/do/do.sh "$1" "#$channel" "does a magical gesture and turns into ${1}!"
-    nick $1
-    sed -i bot.cfg -e "s/nick=.*/nick=\"$1\"/"
+
+newNick="$1"
+
+# Validate that user is authorized
+if [[ ! "$user" =~ $allowList ]]; then
+    exit 0
 fi
+
+# Validate IRC nickname format (RFC 2812)
+# Nicknames can contain: a-z A-Z 0-9 _ - [ ] { } \ | ^
+if [[ -z "$newNick" ]]; then
+    msg "#$channel" "$user: Please provide a nickname."
+    exit 0
+fi
+
+if ! [[ "$newNick" =~ ^[a-zA-Z0-9_\[\]\{\}\\|\^-]+$ ]]; then
+    msg "#$channel" "$user: Invalid nickname format. Only alphanumeric and _-[]{}\\|^ allowed."
+    exit 0
+fi
+
+if [[ ${#newNick} -gt 30 ]]; then
+    msg "#$channel" "$user: Nickname too long (max 30 characters)."
+    exit 0
+fi
+
+# Change the nick
+./modules/do/do.sh "$newNick" "#$channel" "does a magical gesture and turns into ${newNick}!"
+nick "$newNick"
+
+# Safely update config file - escape forward slashes for sed
+escapedNick="${newNick//\//\\/}"
+sed -i "s/^nick=.*/nick=\"${escapedNick}\"/" bot.cfg