[dnsmasq/f17] Allocate dhcp_buff-ers also if daemon->ra_contexts to prevent SIGSEGV (#920300)

[Tomas Hozza]

commit d62cdde5d551d8f3c73ff8080ebc99afbea6e25c
Author: Tomas Hozza <thozza(a)redhat.com&gt;
Date:   Fri Mar 15 11:41:41 2013 +0100

    Allocate dhcp_buff-ers also if daemon->ra_contexts to prevent SIGSEGV (#920300)
    
    Signed-off-by: Tomas Hozza <thozza(a)redhat.com&gt;

 ...-dhcp_buff-ers-also-if-deamon-ra_contexts.patch |   37 ++++++++++++++++++++
 dnsmasq.spec                                       |    9 ++++-
 2 files changed, 45 insertions(+), 1 deletions(-)
---
diff --git a/dnsmasq-2.65-Allocate-dhcp_buff-ers-also-if-deamon-ra_contexts.patch
b/dnsmasq-2.65-Allocate-dhcp_buff-ers-also-if-deamon-ra_contexts.patch
new file mode 100644
index 0000000..3f6005f
--- /dev/null
+++ b/dnsmasq-2.65-Allocate-dhcp_buff-ers-also-if-deamon-ra_contexts.patch
@@ -0,0 +1,37 @@
+From c2845b1f4047c7441bae46c8651ab6a6df9d832c Mon Sep 17 00:00:00 2001
+From: Tomas Hozza <thozza(a)redhat.com&gt;
+Date: Fri, 15 Mar 2013 10:55:55 +0100
+Subject: [PATCH] Allocate dhcp_buff-ers also if deamon->ra_contexts
+
+Allocate dhcp_buff and prevent SIGSEGV.
+
+Signed-off-by: Tomas Hozza <thozza(a)redhat.com&gt;
+---
+ dnsmasq-2.65/src/dnsmasq.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/dnsmasq-2.65/src/dnsmasq.c b/dnsmasq-2.65/src/dnsmasq.c
+index 02055e9..d61810b 100644
+--- a/dnsmasq-2.65/src/dnsmasq.c
++++ b/dnsmasq-2.65/src/dnsmasq.c
+@@ -152,13 +152,16 @@ int main (int argc, char **argv)
+   now = dnsmasq_time();
+   
+ #ifdef HAVE_DHCP
+-  if (daemon->dhcp || daemon->dhcp6)
++  if (daemon->dhcp || daemon->dhcp6 || daemon->ra_contexts)
+     {
+       /* Note that order matters here, we must call lease_init before
+ 	 creating any file descriptors which shouldn't be leaked
+ 	 to the lease-script init process. We need to call common_init
+ 	 before lease_init to allocate buffers it uses.*/
+       dhcp_common_init();
++    }
++  if (daemon->dhcp || daemon->dhcp6)
++    {
+       lease_init(now);
+   
+       if (daemon->dhcp)
+-- 
+1.8.1.4
+
diff --git a/dnsmasq.spec b/dnsmasq.spec
index f5083c4..e56b0d8 100644
--- a/dnsmasq.spec
+++ b/dnsmasq.spec
@@ -11,7 +11,7 @@
 
 Name:           dnsmasq
 Version:        2.65
-Release:        4%{?extraversion}%{?dist}
+Release:        5%{?extraversion}%{?dist}
 Summary:        A lightweight DHCP/caching DNS server
 
 Group:          System Environment/Daemons
@@ -24,6 +24,9 @@ Source1:        %{name}.service
 Patch0:         %{name}-2.65-Correct-behaviour-for-TCP-queries-to-allowed-address.patch
 #
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=e25db1f273920d5...
 Patch1:         %{name}-2.65-Handle-wrong-interface-for-locally-routed-packets.patch
+# Code has been completely rewritten in new version
+# http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2013q1/006967.html
+Patch2:         %{name}-2.65-Allocate-dhcp_buff-ers-also-if-deamon-ra_contexts.patch
 
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
@@ -60,6 +63,7 @@ query/remove a DHCP server's leases.
 
 %patch0 -p1 -b .CVE-2013-0198
 %patch1 -p1 -b .local_queries
+%patch2 -p2 -b .SIGSEGV
 
 # use /var/lib/dnsmasq instead of /var/lib/misc
 for file in dnsmasq.conf.example man/dnsmasq.8 man/es/dnsmasq.8 src/config.h; do
@@ -146,6 +150,9 @@ fi
 %{_mandir}/man1/dhcp_*
 
 %changelog
+* Fri Mar 15 2013 Tomas Hozza <thozza(a)redhat.com&gt; - 2.65-5
+- Allocate dhcp_buff-ers also if daemon->ra_contexts to prevent SIGSEGV (#920300)
+
 * Thu Jan 31 2013 Tomas Hozza <thozza(a)redhat.com&gt; - 2.65-4
 - Handle locally-routed DNS Queries (#904940)