Uninstall script

uninstall.sh

@@ -0,0 +1,86 @@
+#!/bin/sh
+#
+#     8b,dPPYba,    ,adPPYba,   8b      db      d8
+#     88P'    "8a  a8"     "8a  `8b    d88b    d8'
+#     88       d8  8b       d8   `8b  d8'`8b  d8'
+#     88b,   ,a8"  "8a,   ,a8"    `8bd8'  `8bd8'
+#     88`YbbdP"'    `"YbbdP"'       YP      YP
+#     88
+#     88    Zero-configuration Rack server
+#           for Mac OS X -- http://pow.cx/
+#
+#
+#     You're reading the uinstallation script for Pow.
+#     See the full annotated source: http://pow.cx/docs/
+#
+#     Uninstall Pow by running this command:
+#     curl get.pow.cx/uninstall.sh | sh
+
+
+# Set up the environment.
+
+      set -e
+      POW_ROOT="$HOME/Library/Application Support/Pow"
+      POW_CURRENT_PATH="$POW_ROOT/Current"
+      POW_VERSIONS_PATH="$POW_ROOT/Versions"
+      POWD_PLIST_PATH="$HOME/Library/LaunchAgents/cx.pow.powd.plist"
+      FIREWALL_PLIST_PATH="/Library/LaunchDaemons/cx.pow.firewall.plist"
+
+
+# Fail fast if Pow isn't present.
+
+      if [[ ! -d "$POW_CURRENT_PATH" ]] && [[ ! -a "$POWD_PLIST_PATH" ]] && [[ ! -a "$FIREWALL_PLIST_PATH" ]]; then
+        echo "error: can't find Pow" >&2
+        exit 1
+      fi
+
+
+# Make sure we really want to uninstall.
+
+      read -p "Sorry to see you go. Uninstall Pow [y/n]? " answer
+      case $answer in
+        y* ) break  ;;
+        *  ) exit 1 ;;
+      esac
+
+
+# Remove the Versions directory and the Current symlink.
+
+      rm -fr "$POW_VERSIONS_PATH"
+      rm -f "$POW_CURRENT_PATH"
+
+
+# Unload cx.pow.powd from launchctl and remove the plist.
+
+      launchctl unload "$POWD_PLIST_PATH" 2>/dev/null || true
+      rm -f "$POWD_PLIST_PATH"
+
+
+# Read the firewall plist, if possible, to figure out what ports are in use.
+
+      if [[ -a "$FIREWALL_PLIST_PATH" ]]; then
+        ports=($(ruby -e'puts $<.read.scan(/fwd .*?,([\d]+).*?dst-port ([\d]+)/)' "$FIREWALL_PLIST_PATH"))
+
+        HTTP_PORT=${ports[0]}
+        DST_PORT=${ports[1]}
+      fi
+
+
+# Assume reasonable defaults otherwise.
+
+      [[ -z "$HTTP_PORT" ]] && HTTP_PORT=20559
+      [[ -z "$DST_PORT" ]] && DST_PORT=80
+
+
+# Try to find the ipfw rule and delete it.
+
+      RULE=$(sudo ipfw show | (grep ",$HTTP_PORT .* dst-port $DST_PORT in" || true) | cut -f 1 -d " ")
+      [[ -n "$RULE" ]] && sudo ipfw del "$RULE"
+
+
+# Unload the firewall plist and remove it.
+
+      sudo launchctl unload "$FIREWALL_PLIST_PATH" 2>/dev/null || true
+      sudo rm -f "$FIREWALL_PLIST_PATH"
+
+      echo "*** Uninstalled"