add a prototype python script for GPG Key management in Pisi. Being adopted from apt-key script in apt. A step in Package Signing ;)

scripts/package-signing/pisi-key.py

@@ -0,0 +1,157 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+#
+# pisi-key script adopted from apt-key
+#
+# Author : Serdar Dalgic - serdar AT pardus DOT org DOT tr
+# Any comments are welcomed
+#
+# TODO:
+# * a python wrapper for GPG can be used instead of using python's subprocess module
+# * Fill in rest of the functions
+# WARNING!! Still a prototype
+#
+
+import sys
+import subprocess
+
+# We don't use a secret keyring, of course, but gpg panics and
+# implodes if there isn't one available
+GPG = 'gpg --ignore-time-conflict --no-options --no-default-keyring \
+        --secret-keyring /etc/pisi/secring.gpg --trustdb-name /etc/pisi/trustdb.gpg'
+
+MASTER_KEYRING = ''
+ARCHIVE_KEYRING_URI = ''
+# MASTER_KEYRING = '/usr/share/keyrings/pardus-master-keyring.gpg'
+# ARCHIVE_KEYRING_URI = 'http://ftp.pardus.org.tr/pardus/pardus-archive-keyring.gpg'
+
+ARCHIVE_KEYRING=/usr/share/keyrings/pardus-archive-keyring.gpg
+REMOVED_KEYS=/usr/share/keyrings/pardus-archive-removed-keys.gpg
+
+def addKey(GPGcommand, keyfile):
+    cmd = GPGcommand + ' --quiet --batch --import %s' % keyfile
+    pipe = subprocess.call(cmd.split(), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    return pipe.wait() == 0
+
+def removeKey():
+    pass
+
+def update():
+    pass
+
+def net_update():
+    pass
+
+def list_keys():
+    pass
+
+def list_fingerprints():
+    pass
+
+def export():
+    pass
+
+def exportAll():
+    pass
+
+def printUsage():
+    """
+        Prints usage information of application and exits.
+    """
+
+    print "Usage: pisi-key [--keyring file] [command] [arguments]"
+    print
+    print "Manage pisi's list of trusted keys"
+    print
+    print "  pisi-key add <file>          - add the key contained in <file> ('-' for stdin)"
+    print "  pisi-key del <keyid>         - remove the key <keyid>"
+    print "  pisi-key export <keyid>      - output the key <keyid>"
+    print "  pisi-key exportall           - output all trusted keys"
+    print "  pisi-key update              - update keys using the keyring package"
+    print "  pisi-key net-update          - update keys using the network"
+    print "  pisi-key list                - list keys"
+    print "  pisi-key finger              - list fingerprints"
+    print "  pisi-key adv                 - pass advanced options to gpg (download key)"
+    print
+    print "If no specific keyring file is given the command applies to all keyring files."
+    sys.exit(1)
+
+if __name__ == '__main__':
+
+    if len(sys.argv) < 2:
+        printUsage()
+        sys.exit(1)
+
+    argc=1
+    #FIXME:: check whether gnupg is installed on the system or not!!
+
+    # Determine on which keyring we want to work
+    # if sys.argv[1] == '--keyring':
+    if sys.argv[argc] == '--keyring':
+        # keyring is the TRUSTEDFILE
+        #FIXME:: check whether keyrings are accessible
+        argc += 1 # becomes 2
+        keyring = sys.argv[argc]
+        argc += 1 # becomes 3
+        operation = sys.argv[argc]
+        argc += 1 # becomes 4
+    elif:
+        # otherwise use the default
+        keyring = '/etc/pisi/trusted.gpg'
+        operation = sys.argv[argc]
+        argc += 1 # becomes 2
+
+    GPG += ' --keyring %s --primary-keyring %s' % (keyring, keyring)
+
+    #TRUSTEDPARTS is not implemented.
+
+    if operation == 'add':
+        # add the key
+        keyfile = sys.argv[argc]
+        # check whether key_path is alive ('-' can be used for stdin)
+        addKey(GPG, keyfile)
+
+    elif operation == 'del':
+        # remove the key
+        removeKey()
+
+    elif operation == 'update':
+        # update keys using the keyring package
+        update()
+
+    elif operation == 'net-update':
+        # update keys using the network
+        net_update()
+
+    elif operation == 'list':
+        # list keys
+        GPG += ' --batch --list-keys'
+        list_keys()
+
+    elif operation == 'finger':
+        # list fingerprints
+        GPG += ' --batch --fingerprint'
+        list_fingerprints()
+
+    elif operation == 'export':
+        # output the key with the <keyid>
+        keyid = sys.argv[argc]
+        argc += 1 #increment argc
+        GPG += ' --armor --export %s' % keyid
+        export()
+
+    elif operation == 'exportall':
+        # output all trusted keys
+        GPG += ' --armor --export'
+        exportAll()
+
+    elif operation == 'adv':
+        adv_command = GPG + ' ' + sys.args[3:]
+        print 'Executing: ' + adv_command
+        # TODO: execute
+        pass
+    else:
+        printUsage()
+        sys.exit(1)
+
+