expat: security bump to version 2.2.1

Fixes:

- CVE-2017-9233 - External entity infinite loop DoS. See:
  https://libexpat.github.io/doc/cve-2017-9233/

- CVE-2016-9063 -- Detect integer overflow

And further more:

- Fix regression from fix to CVE-2016-0718 cutting off longer tag names.

- Extend fix for CVE-2016-5300 (use getrandom() if available).

- Extend fix for CVE-2012-0876 (Change hash algorithm to William Ahern's
  version of SipHash).

Also add an upstream patch to fix detection of getrandom().

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/expat/0001-configure.ac-Fix-mis-detection-of-getrandom-on-Debia.patch

@@ -0,0 +1,29 @@
+From 602e6c78ca750c082b72f8cdf4a38839b312959f Mon Sep 17 00:00:00 2001
+From: Sebastian Pipping <sebastian@pipping.org>
+Date: Sun, 18 Jun 2017 18:55:10 +0200
+Subject: [PATCH] configure.ac: Fix mis-detection of getrandom on Debian
+ GNU/kFreeBSD (#50)
+
+There is no such thing but we need to link (not just compile) to realize.
+
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+---
+ expat/configure.ac | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/expat/configure.ac b/expat/configure.ac
+index 1357c9a..444c002 100644
+--- a/expat/configure.ac
++++ b/expat/configure.ac
+@@ -130,7 +130,7 @@ AC_LINK_IFELSE([AC_LANG_SOURCE([
+ 
+ 
+ AC_MSG_CHECKING([for getrandom (Linux 3.17+, glibc 2.25+)])
+-AC_COMPILE_IFELSE([AC_LANG_SOURCE([
++AC_LINK_IFELSE([AC_LANG_SOURCE([
+   #include <stdlib.h>  /* for NULL */
+   #include <sys/random.h>
+   int main() {
+-- 
+2.11.0
+

package/expat/expat.hash

@@ -1,5 +1,5 @@
-# From https://sourceforge.net/projects/expat/files/expat/2.2.0/
-md5	2f47841c829facb346eb6e3fab5212e2	expat-2.2.0.tar.bz2
-sha1	8453bc52324be4c796fd38742ec48470eef358b3	expat-2.2.0.tar.bz2
+# From https://sourceforge.net/projects/expat/files/expat/2.2.1/
+md5	d9c3baeab58774cefc2f04faf29f2cf8	expat-2.2.1.tar.bz2
+sha1	f45eb724f182776a9cacec9ed70d549e87198987	expat-2.2.1.tar.bz2
 # Calculated based on the hashes above
-sha256	d9e50ff2d19b3538bd2127902a89987474e1a4db8e43a66a4d1a712ab9a504ff	expat-2.2.0.tar.bz2
+sha256	1868cadae4c82a018e361e2b2091de103cd820aaacb0d6cfa49bd2cd83978885	expat-2.2.1.tar.bz2

package/expat/expat.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-EXPAT_VERSION = 2.2.0
+EXPAT_VERSION = 2.2.1
 EXPAT_SITE = http://downloads.sourceforge.net/project/expat/expat/$(EXPAT_VERSION)
 EXPAT_SOURCE = expat-$(EXPAT_VERSION).tar.bz2
 EXPAT_INSTALL_STAGING = YES
@@ -14,6 +14,8 @@ EXPAT_DEPENDENCIES = host-pkgconf
 HOST_EXPAT_DEPENDENCIES = host-pkgconf
 EXPAT_LICENSE = MIT
 EXPAT_LICENSE_FILES = COPYING
+# for 0001-configure.ac-Fix-mis-detection-of-getrandom-on-Debia.patch
+EXPAT_AUTORECONF = YES
 
 $(eval $(autotools-package))
 $(eval $(host-autotools-package))