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Date:      Thu, 21 Apr 2011 08:35:38 GMT
From:      Marcin Cieslak <saper@saper.info>
To:        FreeBSD-gnats-submit@FreeBSD.org
Cc:        akosela@andykosela.com
Subject:   ports/156544: [PATCH] x11/rxvt-devel: don't crash on paste from non-ICCCM clients
Message-ID:  <201104210835.p3L8ZcgS030656@radziecki.saper.info>
Resent-Message-ID: <201104210840.p3L8eAWK079873@freefall.freebsd.org>

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>Number:         156544
>Category:       ports
>Synopsis:       [PATCH] x11/rxvt-devel: don't crash on paste from non-ICCCM clients
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Thu Apr 21 08:40:10 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Marcin Cieslak
>Release:        FreeBSD 9.0-CURRENT amd64
>Organization:
http://saper.info
>Environment:
System: FreeBSD radziecki.saper.info 9.0-CURRENT FreeBSD 9.0-CURRENT #1 r219785M: Mon Mar 21 11:40:40 CET
>Description:

Some clients that are sending NONE as property
in their ConvertSelection request:

         ............REQUEST: ConvertSelection
             sequence number: 012c
              request length: 0006
                   requestor: WIN 0260000d
                   selection: <PRIMARY>
                      target: <STRING>
                    property: <NONE>
                        time: CurrentTime
                                 ..............EVENT: SelectionRequest
                                     sequence number: 0208
                                                time: CurrentTime
                                               owner: WIN 02400008
                                           requestor: WIN 0260000d
                                           selection: <PRIMARY>
                                              target: <STRING>
                                            property: <NONE>
                                 ..............ERROR: Atom
                                 ....SYNTHETIC EVENT: SelectionNotify
                                     sequence number: 012c
                                                time: CurrentTime
                                           requestor: WIN 0260000d
                                           selection: <PRIMARY>
                                              target: <STRING>
                                            property: <NONE>

Receipt of SelectionRequest with <NONE> property
causes rxvt derivatives to crash with BadAtom error.

ICCCM says, that only obsolete clients should behave like this, and
t recommends that clients owning selection should use
the target atom as the property name.
(see http://tronche.com/gui/x/icccm/sec-2.html#s-2.2)

xterm is handling this, but rxvt and derivatives do not.

Submitted for x11/rxvt-unicode as
http://www.freebsd.org/cgi/query-pr.cgi?pr=156509
Submitted for x11/rxvt as
http://www.freebsd.org/cgi/query-pr.cgi?pr=156542

Submitted upstream:

(rxvt)
https://sourceforge.net/tracker/?func=detail&aid=3289852&group_id=221&atid=100221

(rxvt-unicode)
http://thread.gmane.org/gmane.comp.terminal-emulators.rxvt-unicode.general/958

Added file(s):
 
- files/patch-screen.c

Port maintainer (akosela@andykosela.com) is cc'd.

Generated with FreeBSD Port Tools 0.99
>How-To-Repeat:

Paste from rxvt into comms/syncterm or one of the clients
described in:

http://michael.toren.net/mirrors/doc/X-copy+paste.txt

>Fix:

--- rxvt-devel-2.7.10_5.patch begins here ---
diff -ruN --exclude=CVS /usr/ports/x11/rxvt-devel.orig/files/patch-src-screen.c /usr/ports/x11/rxvt-devel/files/patch-src-screen.c
--- /usr/ports/x11/rxvt-devel.orig/files/patch-src-screen.c	2011-04-21 10:30:24.000000000 +0200
+++ /usr/ports/x11/rxvt-devel/files/patch-src-screen.c	2011-04-21 10:32:15.000000000 +0200
@@ -1,11 +1,62 @@
 --- src/screen.c.orig	2003-03-23 17:56:06.000000000 +0100
-+++ src/screen.c	2008-01-04 16:45:00.000000000 +0100
-@@ -3548,7 +3548,7 @@
++++ src/screen.c	2011-04-19 23:27:32.000000000 +0200
+@@ -3520,6 +3520,7 @@
+     Atom32          target_list[3];
+ #endif
+     Atom            target;
++    Atom            property;
+     XTextProperty   ct;
+     XICCEncodingStyle style;
+     char           *cl[2], dummy[1];
+@@ -3532,6 +3533,15 @@
+     ev.target = rq->target;
+     ev.time = rq->time;
+ 
++	/* ICCCM: 2.2. Responsibilities of the Selection Owner   
++	 * SelectionRequest:
++	 * If the specified property is None , the requestor
++	 * an obsolete client. Owners are encouraged
++	 * to support these clients by using the specified
++	 * target atom as the property name to be used for
++	 * the reply.
++	 */
++	property = (rq->property == 0) ? rq->target : rq->property;
+     if (rq->target == r->h->xa[XA_TARGETS]) {
+ 	target_list[0] = (Atom32) r->h->xa[XA_TARGETS];
+ 	target_list[1] = (Atom32) XA_STRING;
+@@ -3539,7 +3549,7 @@
+ #ifdef USE_XIM
+ 	target_list[3] = (Atom32) r->h->xa[XA_COMPOUND_TEXT];
+ #endif
+-	XChangeProperty(r->Xdisplay, rq->requestor, rq->property, XA_ATOM,
++	XChangeProperty(r->Xdisplay, rq->requestor, property, XA_ATOM,
+ 			(8 * sizeof(target_list[0])), PropModeReplace,
+ 			(unsigned char *)target_list,
+ 			(sizeof(target_list) / sizeof(target_list[0])));
+@@ -3547,10 +3557,10 @@
+     } else if (rq->target == r->h->xa[XA_MULTIPLE]) {
  	/* TODO: Handle MULTIPLE */
      } else if (rq->target == r->h->xa[XA_TIMESTAMP] && r->selection.text) {
- 	XChangeProperty(r->Xdisplay, rq->requestor, rq->property, XA_INTEGER,
+-	XChangeProperty(r->Xdisplay, rq->requestor, rq->property, XA_INTEGER,
 -			(8 * sizeof(Time)), PropModeReplace,
++	XChangeProperty(r->Xdisplay, rq->requestor, property, XA_INTEGER,
 +			32, PropModeReplace,
  			(unsigned char *)&r->h->selection_time, 1);
- 	ev.property = rq->property;
+-	ev.property = rq->property;
++	ev.property = property;
      } else if (rq->target == XA_STRING
+ 	       || rq->target == r->h->xa[XA_COMPOUND_TEXT]
+ 	       || rq->target == r->h->xa[XA_TEXT]) {
+@@ -3588,10 +3598,10 @@
+ 	    ct.value = (unsigned char *)cl[0];
+ 	    ct.nitems = selectlen;
+ 	}
+-	XChangeProperty(r->Xdisplay, rq->requestor, rq->property,
++	XChangeProperty(r->Xdisplay, rq->requestor, property,
+ 			target, 8, PropModeReplace,
+ 			ct.value, (int)ct.nitems);
+-	ev.property = rq->property;
++	ev.property = property;
+ #ifdef USE_XIM
+ 	if (freect)
+ 	    XFree(ct.value);
--- rxvt-devel-2.7.10_5.patch ends here ---

>Release-Note:
>Audit-Trail:
>Unformatted:



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