From a984987efa2e80601bea6fb44ab28c786850acd4 Mon Sep 17 00:00:00 2001
From: Leonardo Arena <rnalrd@gmail.com>
Date: Thu, 18 Mar 2010 07:51:25 +0000
Subject: main/heimdal: filter invalid enctypes instead of rejecting (cherry
 picked from commit 265b5747b9dd90b6a6f06b2b8f60618083ebd61b)

---
 main/heimdal/APKBUILD                              |  7 +++-
 .../return-invalid-enctype-for-weak-crypto.patch   | 48 ++++++++++++++++++++++
 2 files changed, 53 insertions(+), 2 deletions(-)
 create mode 100644 main/heimdal/return-invalid-enctype-for-weak-crypto.patch

diff --git a/main/heimdal/APKBUILD b/main/heimdal/APKBUILD
index 139539e1..e98d9cf0 100644
--- a/main/heimdal/APKBUILD
+++ b/main/heimdal/APKBUILD
@@ -2,7 +2,7 @@
 # Contributor: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=heimdal
 pkgver=1.3.1
-pkgrel=3
+pkgrel=4
 pkgdesc="An implementation of Kerberos 5"
 url="http://www.h5l.org/"
 license="BSD"
@@ -22,6 +22,7 @@ source="http://www.h5l.org/dist/src/$pkgname-$pkgver.tar.gz
 100-check-com_err-pthread.patch
 heimdal-c++-safe-krb5_cccol_cursor.patch
 heimdal-locate_plugin-header.patch
+return-invalid-enctype-for-weak-crypto.patch
 "
 
 # krb5.h needs com_err.h
@@ -41,6 +42,7 @@ prepare() {
 	patch -Np1 -i ../100-check-com_err-pthread.patch || return 1
 	patch -Np1 -i ../heimdal-c++-safe-krb5_cccol_cursor.patch || return 1
 	patch -Np1 -i ../heimdal-locate_plugin-header.patch || return 1
+	patch -Np1 -i ../return-invalid-enctype-for-weak-crypto.patch || return 1
 
 	# name clash with ruserpass in netdb.h
 	sed -i -e 's/ruserpass/ruserpw/g' appl/ftp/ftp/*.[ch] || return 1
@@ -176,4 +178,5 @@ md5sums="4ce17deae040a3519e542f48fd901f21  heimdal-1.3.1.tar.gz
 8208ae8c0b6ff5ab4f64af1693e9e396  014_all_heimdal-path.patch
 e73205200f9641b5d969427ffb04282a  100-check-com_err-pthread.patch
 7ebff9a320f18ed62f5fcb68c8fc18b8  heimdal-c++-safe-krb5_cccol_cursor.patch
-248ab80b44568171e432a23524f4fe39  heimdal-locate_plugin-header.patch"
+248ab80b44568171e432a23524f4fe39  heimdal-locate_plugin-header.patch
+a8342f77a1aedb4f332983bcbf141827  return-invalid-enctype-for-weak-crypto.patch"
diff --git a/main/heimdal/return-invalid-enctype-for-weak-crypto.patch b/main/heimdal/return-invalid-enctype-for-weak-crypto.patch
new file mode 100644
index 00000000..c8ce39fe
--- /dev/null
+++ b/main/heimdal/return-invalid-enctype-for-weak-crypto.patch
@@ -0,0 +1,48 @@
+--- a/lib/krb5/context.c
++++ b/lib/krb5/context.c
+@@ -825,23 +825,33 @@ KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+ krb5_set_default_in_tkt_etypes(krb5_context context,
+ 			       const krb5_enctype *etypes)
+ {
++    krb5_error_code ret;
+     krb5_enctype *p = NULL;
+-    int i;
++    unsigned int n, m;
+
+     if(etypes) {
+-	for (i = 0; etypes[i]; ++i) {
+-	    krb5_error_code ret;
+-	    ret = krb5_enctype_valid(context, etypes[i]);
+-	    if (ret)
+-		return ret;
+-	}
+-	++i;
+-	ALLOC(p, i);
++	for (n = 0; etypes[n]; n++)
++	    ;
++	n++;
++	ALLOC(p, n);
+ 	if(!p) {
+-	    krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
++	    krb5_set_error_message (context, ENOMEM,
++				    N_("malloc: out of memory", ""));
+ 	    return ENOMEM;
+ 	}
+-	memmove(p, etypes, i * sizeof(krb5_enctype));
++	for (n = 0, m = 0; etypes[n]; n++) {
++	    ret = krb5_enctype_valid(context, etypes[n]);
++	    if (ret)
++		continue;
++	    p[m++] = etypes[n];
++	}
++	p[m] = ETYPE_NULL;
++	if (m == 0) {
++	    free(p);
++	    krb5_set_error_message (context, KRB5_PROG_ETYPE_NOSUPP,
++				    N_("no valid enctype set", ""));
++	    return KRB5_PROG_ETYPE_NOSUPP;
++	}
+     }
+     if(context->etypes)
+ 	free(context->etypes);
+
-- 
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