[asterisk-commits] jpeeler: branch 1.6.0 r231928 - in /branches/1.6.0: ./ main/channel.c

[SVN commits to the Asterisk project]

Author: jpeeler
Date: Tue Dec  1 15:57:45 2009
New Revision: 231928

URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=231928
Log:
Merged revisions 231927 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/trunk

................
  r231927 | jpeeler | 2009-12-01 15:54:21 -0600 (Tue, 01 Dec 2009) | 19 lines
  
  Merged revisions 231911 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.4
  
  ........
    r231911 | jpeeler | 2009-12-01 15:29:31 -0600 (Tue, 01 Dec 2009) | 12 lines
    
    Fix crash with invalid frame data
    
    The crash was happening as a result of a frame containing an invalid data
    pointer, but was set with data length of zero. The few times the issue was
    reproduced it _seemed_ that the frame was queued properly, that is the data
    pointer was set to NULL. I never could reproduce the crash so as a last resort
    the crash has been fixed, but a check in __ast_read has been added to give as
    much information about the source of problematic frames in the future.
    
    (closes issue #16058)
    Reported by: atis
  ........
................

Modified:
    branches/1.6.0/   (props changed)
    branches/1.6.0/main/channel.c

Propchange: branches/1.6.0/
------------------------------------------------------------------------------
Binary property 'trunk-merged' - no diff available.

Modified: branches/1.6.0/main/channel.c
URL: http://svnview.digium.com/svn/asterisk/branches/1.6.0/main/channel.c?view=diff&rev=231928&r1=231927&r2=231928
==============================================================================
--- branches/1.6.0/main/channel.c (original)
+++ branches/1.6.0/main/channel.c Tue Dec  1 15:57:45 2009
@@ -3018,6 +3018,17 @@
 		ast_frame_dump(chan->name, f, "<<");
 	chan->fin = FRAMECOUNT_INC(chan->fin);
 
+	if (f && f->datalen == 0 && f->data) {
+		/* fix invalid pointer */
+		f->data = NULL;
+#ifdef AST_DEVMODE
+		ast_log(LOG_ERROR, "Found frame with src '%s' on channel '%s' with datalen zero, but non-null data pointer!\n", f->src, chan->name);
+		ast_frame_dump(chan->name, f, "<<");
+#else
+		ast_debug(3, "Found frame with src '%s' on channel '%s' with datalen zero, but non-null data pointer!\n", f->src, chan->name);
+#endif
+	}
+
 done:
 	if (chan->music_state && chan->generator && chan->generator->digit && f && f->frametype == AST_FRAME_DTMF_END)
 		chan->generator->digit(chan, f->subclass);