Patcher from Dani Church, removed coreutils-gnu dependance and fixed init script.

[ussd-widget] / ussd4all / rtcom / rtcompatcher.py

diff --git a/ussd4all/rtcom/rtcompatcher.py b/ussd4all/rtcom/rtcompatcher.py
new file mode 100644 (file)
index 0000000..450defe
--- /dev/null
+++ b/ussd4all/rtcom/rtcompatcher.py
@@ -0,0 +1,98 @@
+#!/usr/bin/python
+
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published
+## by the Free Software Foundation; version 2 and higer.
+##
+## Dani Church 2010
+
+import hashlib
+
+patch_config = {
+    'known_md5sums': [
+        '5a51e4fbb38dac338e4444e6b713e9b3',
+        '44d6b8258fb4fb9c849162704120ba53',
+    ],
+    'check_ranges': [
+        (194380, 'f04f2de920b08de2'),
+        (195340, 'f04f2de920b08de2'),
+    ],
+    'patch_ranges': [
+        (194380, '0010a0e3001097e5'),
+        (195340, '0010a0e3001097e5'),
+    ],
+}
+
+class Patcher:
+    known_md5sums = []
+    check_ranges = []
+    patch_ranges = []
+
+    def __init__(self, config):
+        self.known_md5sums = config['known_md5sums']
+        self.check_ranges = config['check_ranges']
+        self.patch_ranges = config['patch_ranges']
+
+    def check_md5sum(self, filename):
+        md5 = hashlib.md5()
+        f = open(filename, 'rb')
+        while True:
+            d = f.read(8096)
+            if not d: break
+            md5.update(d)
+        f.close()
+
+        md5sum = md5.hexdigest()
+        for known_sum in self.known_md5sums:
+            if md5sum == known_sum: return True
+
+        return False
+
+    def check_data(self, filename):
+        f = open(filename, 'rb')
+
+        for seek, hexbytes in self.check_ranges:
+            bytes = hexbytes.decode('hex')
+            f.seek(seek)
+            actual = f.read(len(bytes))
+            if actual != bytes:
+                f.close()
+                return False
+
+        f.close()
+        return True
+        
+    def patch_file(self, filename):
+        f = open(filename, 'r+b')
+
+        for seek, hexbytes in self.patch_ranges:
+            bytes = hexbytes.decode('hex')
+            f.seek(seek)
+            f.write(bytes)
+
+        f.close()
+
+if __name__ == '__main__':
+    import sys, os, shutil
+
+    library = '/usr/lib/librtcom-call-ui.so.0.0.0'
+
+    if os.access(library+'.orig', os.F_OK):
+        print "It looks like %s has already been patched. Aborting." % (library,)
+        sys.exit(1)
+
+    patcher = Patcher(patch_config)
+
+    if not patcher.check_md5sum(library):
+        if not patcher.check_data(library):
+            print "Your %s is not recognized. So I won't patch it." % (library,)
+            sys.exit(1)
+        if len(sys.argv) > 1 and sys.argv[1] == '--force':
+            print "Patching an unrecognized %s. Please test your system before rebooting." % (library,)
+        else:
+           message = "Your %s is not recognized, but it seems to match the patterns.\nRun '%s --force' to try patching anyway, but understand that\nTHIS MAY BREAK YOUR SYSTEM.  If you do, test your system thoroughly before rebooting." % (library,library,sys.argv[0])
+           subprocess.call(["dbus-send --type=method_call --dest=org.freedesktop.Notifications /org/freedesktop/Notifications org.freedesktop.Notifications.SystemNoteDialog string:\""+message+"\" uint32:0 string:\"OK\""],shell=True)
+           sys.exit(1)
+
+    shutil.copy2(library, library+'.orig')
+    patcher.patch_file(library)