Glibc built with GCC 4.5 will notice a buffer overflow in the handling of OLD_GNU magic bytes and kill us. Apply a Fedora patch scavenged by Emil Karlson to avoid this happening; closes bug #317139.

(Portage version: 2.2_rc67/cvs/Linux x86_64)

3 files changed, 110 insertions, 1 deletions

diff --git a/app-arch/tar/ChangeLog b/app-arch/tar/ChangeLog
index 18d82f212691..629a855a6e46 100644
--- a/app-arch/tar/ChangeLog
+++ b/app-arch/tar/ChangeLog
@@ -1,6 +1,14 @@
 # ChangeLog for app-arch/tar
 # Copyright 1999-2010 Gentoo Foundation; Distributed under the GPL v2
-# $Header: /var/cvsroot/gentoo-x86/app-arch/tar/ChangeLog,v 1.142 2010/03/10 13:55:50 vapier Exp $
+# $Header: /var/cvsroot/gentoo-x86/app-arch/tar/ChangeLog,v 1.143 2010/04/25 16:44:23 chainsaw Exp $
+
+*tar-1.23-r1 (25 Apr 2010)
+
+  25 Apr 2010; <chainsaw@gentoo.org> +tar-1.23-r1.ebuild,
+  +files/tar-1.23-strncpy.patch:
+  Glibc built with GCC 4.5 will notice a buffer overflow in the handling of
+  OLD_GNU magic bytes and kill us. Apply a Fedora patch scavenged by Emil
+  Karlson to avoid this happening; closes bug #317139.
 
 *tar-1.23 (10 Mar 2010)
 
diff --git a/app-arch/tar/files/tar-1.23-strncpy.patch b/app-arch/tar/files/tar-1.23-strncpy.patch
new file mode 100644
index 000000000000..c4939268c219
--- /dev/null
+++ b/app-arch/tar/files/tar-1.23-strncpy.patch
@@ -0,0 +1,32 @@
+diff -uNr tar-1.23.ORIG//src/create.c tar-1.23/src/create.c
+--- tar-1.23.ORIG//src/create.c	2010-04-25 17:36:03.553606076 +0100
++++ tar-1.23/src/create.c	2010-04-25 17:36:16.294605862 +0100
+@@ -575,7 +575,10 @@
+   GNAME_TO_CHARS (tmpname, header->header.gname);
+   free (tmpname);
+ 
+-  strcpy (header->header.magic, OLDGNU_MAGIC);
++  /* OLDGNU_MAGIC is string with 7 chars + NULL */
++  strncpy (header->header.magic, OLDGNU_MAGIC, sizeof(header->header.magic));
++  strncpy (header->header.version, OLDGNU_MAGIC+sizeof(header->header.magic),
++           sizeof(header->header.version));
+   header->header.typeflag = type;
+   finish_header (st, header, -1);
+ 
+@@ -910,9 +913,13 @@
+       break;
+ 
+     case OLDGNU_FORMAT:
+-    case GNU_FORMAT:   /*FIXME?*/
+-      /* Overwrite header->header.magic and header.version in one blow.  */
+-      strcpy (header->header.magic, OLDGNU_MAGIC);
++    case GNU_FORMAT:
++      /* OLDGNU_MAGIC is string with 7 chars + NULL */
++      strncpy (header->header.magic, OLDGNU_MAGIC,
++               sizeof(header->header.magic));
++      strncpy (header->header.version,
++               OLDGNU_MAGIC+sizeof(header->header.magic),
++               sizeof(header->header.version));
+       break;
+ 
+     case POSIX_FORMAT:
diff --git a/app-arch/tar/tar-1.23-r1.ebuild b/app-arch/tar/tar-1.23-r1.ebuild
new file mode 100644
index 000000000000..03bac74a9a0a
--- /dev/null
+++ b/app-arch/tar/tar-1.23-r1.ebuild
@@ -0,0 +1,69 @@
+# Copyright 1999-2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/app-arch/tar/tar-1.23-r1.ebuild,v 1.1 2010/04/25 16:44:23 chainsaw Exp $
+
+inherit flag-o-matic eutils
+
+DESCRIPTION="Use this to make tarballs :)"
+HOMEPAGE="http://www.gnu.org/software/tar/"
+SRC_URI="http://ftp.gnu.org/gnu/tar/${P}.tar.bz2
+	ftp://alpha.gnu.org/gnu/tar/${P}.tar.bz2
+	mirror://gnu/tar/${P}.tar.bz2"
+
+LICENSE="GPL-3"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~x86-fbsd"
+IUSE="nls static userland_GNU"
+
+RDEPEND=""
+DEPEND="${RDEPEND}
+	nls? ( >=sys-devel/gettext-0.10.35 )"
+
+src_unpack() {
+	unpack ${A}
+	cd "${S}"
+
+	epatch "${FILESDIR}"/${P}-strncpy.patch #317139
+
+	if ! use userland_GNU ; then
+		sed -i \
+			-e 's:/backup\.sh:/gbackup.sh:' \
+			scripts/{backup,dump-remind,restore}.in \
+			|| die "sed non-GNU"
+	fi
+}
+
+src_compile() {
+	local myconf
+	use static && append-ldflags -static
+	use userland_GNU || myconf="--program-prefix=g"
+	# Work around bug in sandbox #67051
+	gl_cv_func_chown_follows_symlink=yes \
+	econf \
+		--enable-backup-scripts \
+		--bindir=/bin \
+		--libexecdir=/usr/sbin \
+		$(use_enable nls) \
+		${myconf} || die
+	emake || die "emake failed"
+}
+
+src_install() {
+	local p=""
+	use userland_GNU || p=g
+
+	emake DESTDIR="${D}" install || die "make install failed"
+
+	if [[ -z ${p} ]] ; then
+		# a nasty yet required piece of baggage
+		exeinto /etc
+		doexe "${FILESDIR}"/rmt || die
+	fi
+
+	dodoc AUTHORS ChangeLog* NEWS README* THANKS
+	newman "${FILESDIR}"/tar.1 ${p}tar.1
+	mv "${D}"/usr/sbin/${p}backup{,-tar}
+	mv "${D}"/usr/sbin/${p}restore{,-tar}
+
+	rm -f "${D}"/usr/$(get_libdir)/charset.alias
+}