[cups/f18] Prevent stringpool damage leading to memory leaks (bug #974048).

[Tim Waugh]

commit 1e7802c0b08f3abee4865eec57fc55c59afe4f4c
Author: Tim Waugh <twaugh at redhat.com>
Date:   Thu Jun 13 11:58:55 2013 +0100

    Prevent stringpool damage leading to memory leaks (bug #974048).
    
    Resolves: rhbz#974048

 cups-stringpool-setprinterattr.patch |   64 ++++++++++++++++++++++++++++++++++
 cups.spec                            |    9 ++++-
 2 files changed, 71 insertions(+), 2 deletions(-)
---
diff --git a/cups-stringpool-setprinterattr.patch b/cups-stringpool-setprinterattr.patch
new file mode 100644
index 0000000..ab3028a
--- /dev/null
+++ b/cups-stringpool-setprinterattr.patch
@@ -0,0 +1,64 @@
+diff -up cups-1.5.4/scheduler/printers.c.stringpool-setprinterattr cups-1.5.4/scheduler/printers.c
+--- cups-1.5.4/scheduler/printers.c.stringpool-setprinterattr	2013-06-13 10:40:43.607590350 +0100
++++ cups-1.5.4/scheduler/printers.c	2013-06-13 10:53:31.134919727 +0100
+@@ -2053,6 +2053,7 @@ cupsdSetPrinterAttr(
+   ipp_attribute_t	*attr;		/* Attribute */
+   int			i,		/* Looping var */
+ 			count;		/* Number of values */
++  char			*value_dup;	/* Copy of attribute value string */
+   char			*ptr,		/* Pointer into value */
+ 			*start,		/* Start of value */
+ 			quote;		/* Quote character */
+@@ -2121,16 +2122,24 @@ cupsdSetPrinterAttr(
+       return;
+     }
+ 
+-    for (i = 0; i < count; i ++)
++    if ((value_dup = strdup(value)) == NULL)
+     {
+-      if ((ptr = strchr(value, ',')) != NULL)
++      cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to copy attribute value.");
++      return;
++    }
++
++    for (i = 0, start = value_dup; i < count; i ++)
++    {
++      if ((ptr = strchr(start, ',')) != NULL)
+         *ptr++ = '\0';
+ 
+-      attr->values[i].integer = strtol(value, NULL, 10);
++      attr->values[i].integer = strtol(start, NULL, 10);
+ 
+       if (ptr)
+-        value = ptr;
++        start = ptr;
+     }
++
++    free(value_dup);
+   }
+   else
+   {
+@@ -2171,7 +2180,13 @@ cupsdSetPrinterAttr(
+       return;
+     }
+ 
+-    for (i = 0, quote = '\0', ptr = value; i < count; i ++)
++    if ((value_dup = strdup(value)) == NULL)
++    {
++      cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to copy attribute value.");
++      return;
++    }
++
++    for (i = 0, quote = '\0', ptr = value_dup; i < count; i ++)
+     {
+       for (start = ptr; *ptr; ptr ++)
+       {
+@@ -2199,6 +2214,8 @@ cupsdSetPrinterAttr(
+ 
+       attr->values[i].string.text = _cupsStrAlloc(start);
+     }
++
++    free(value_dup);
+   }
+ }
+ 
diff --git a/cups.spec b/cups.spec
index e734893..1cf2be5 100644
--- a/cups.spec
+++ b/cups.spec
@@ -12,7 +12,7 @@
 Summary: Common Unix Printing System
 Name: cups
 Version: 1.5.4
-Release: 27%{?dist}
+Release: 28%{?dist}
 License: GPLv2
 Group: System Environment/Daemons
 Source: http://ftp.easysw.com/pub/cups/%{version}/cups-%{version}-source.tar.bz2
@@ -79,13 +79,13 @@ Patch43: cups-str4194.patch
 Patch44: cups-r10638.patch
 Patch45: cups-r10642.patch
 Patch46: cups-str4190.patch
-
 Patch47: cups-str4223.patch
 
 Patch48: cups-str4125.patch
 Patch49: cups-str4140.patch
 Patch50: cups-str4187.patch
 Patch51: cups-str4205.patch
+Patch52: cups-stringpool-setprinterattr.patch
 
 Patch100: cups-lspp.patch
 
@@ -346,6 +346,8 @@ Sends IPP requests to the specified URI and tests and/or displays the results.
 %patch50 -p1 -b .str4187
 # Don't set auth-info-required all of the time (STR #4205)
 %patch51 -p1 -b .str4205
+# Prevent stringpool damage leading to memory leaks (bug #974048).
+%patch52 -p1 -b .stringpool-setprinterattr
 
 %if %lspp
 # LSPP support.
@@ -763,6 +765,9 @@ rm -f %{cups_serverbin}/backend/smb
 %{_mandir}/man5/ipptoolfile.5.gz
 
 %changelog
+* Thu Jun 13 2013 Tim Waugh <twaugh at redhat.com> 1:1.5.4-28
+- Prevent stringpool damage leading to memory leaks (bug #974048).
+
 * Tue Apr 23 2013 Tim Waugh <twaugh at redhat.com> 1:1.5.4-27
 - dnssd backend: don't crash if avahi gives a callback with no TXT
   record (bug #927040).