New script crypt.py

diff --git a/python/crypt.py b/python/crypt.py
new file mode 100644 (file)
index 0000000..59f75fc
--- /dev/null
+++ b/python/crypt.py
@@ -0,0 +1,87 @@
+#!/usr/bin/python
+# ==============================================================
+# crypt.py written 08/2008 by blackpenguin <nlissne@linux01.org>
+# ==============================================================
+# License     : Public Domain
+# Description : encrypt/decrypt PRIVMSGs in WeeChat using openssl
+#
+# Version     : 0.02
+#
+# This plugin uses openssl to encrypt/decrypt messages you send
+# or receive with weechat. Due to the very simple method 
+# used it should be easy to port this plugin to any other 
+# IRC client. 
+#
+# The default encryption algorithm is blowfish, but you can
+# easily change it to any other cipher your openssl offers.
+# Read output of "openssl -h" to find out, which ciphers are
+# supported (also depends on your kernel)
+CIPHER="blowfish"
+# 
+# To activate encryption for a given server.user just
+# put a file called "cryptkey.server.user" into 
+# your weechat-directory, containing the passphrase
+# to use for encryption/decryption 
+# example: if you have exchanged a secret key with me,
+# you would put it in a file called 
+# cryptkey.freenode.blackpenguin in your weechat_dir
+#
+# Of course, you need to share this keyfile with the 
+# remote side in another secure way (i.e. sending
+# pgp-encrypted mail)
+#
+# I might implement a /crypt command to activate/deactivate
+# encryption later, but for now the method used works for me.
+#
+# HISTORY:
+# version 0.01 initial version
+#
+# version 0.02 switched from os.environ["HOME"] + "/.weechat" 
+#              to get_info("weechat_dir")
+
+import weechat, string, os
+
+
+def decrypt(server, args):
+  pre, middle, message = string.split(args, ":", 2)
+  midstr=middle.split(" ")
+  username=midstr[-2]
+  if os.path.exists(weechat_dir + "/cryptkey." + server + "." + username):
+    cin, cout = os.popen2("openssl enc -d -a -" + CIPHER + " -pass file:" + weechat_dir + "/cryptkey." + server + "." + username + " 2>/dev/null")
+    cin.write(message.replace("|","\n"))
+    cin.close()
+    decrypted = cout.read()
+    sts = cout.close()
+    if decrypted == "":
+      return pre + ":" + middle + ":" + message
+    return pre + ":" + middle + ":" + chr(3) + "04* crypted * " + chr(15) + decrypted 
+  else:
+    return pre + ":" + middle + ":" + message
+    
+def encrypt(server, args):
+  pre, message = string.split(args, ":", 1)
+  prestr=pre.split(" ")
+  username=prestr[-2]
+  if os.path.exists(weechat_dir + "/cryptkey."  + server + "." + username):
+    cin, cout = os.popen2("openssl enc -a -" + CIPHER + " -pass file:" + weechat_dir + "/cryptkey." + server + "." + username + " 2>/dev/null")
+    cin.write(message)
+    cin.close()
+    encrypted = cout.read()
+    encrypted = encrypted.replace("\n","|")
+    cout.close()
+    weechat.print_infobar(0,"* sent encrypted * ")
+    return pre + ":" + encrypted
+  else:
+    weechat.remove_infobar(0)
+    return pre + ":" + message
+
+
+
+# register the plugin
+weechat.register("crypt", "0.02", "", "encrypt/decrypt PRIVMSGs")
+weechat_dir = weechat.get_info("weechat_dir")
+
+# register the modifiers
+weechat.add_modifier("irc_in", "privmsg", "decrypt")
+weechat.add_modifier("irc_out", "privmsg", "encrypt")
+