media-libs/openjpeg: backport upstream fix for CVE-2021-29338

The fix is split across two commits upstream, considered merging them
but decided against it.

Bug: https://bugs.gentoo.org/783513
Fixes: CVE-2021-29338
Signed-off-by: Thomas Bracht Laumann Jespersen <t@laumann.xyz>
Closes: https://github.com/gentoo/gentoo/pull/25142
Signed-off-by: Joonas Niilola <juippis@gentoo.org>

3 files changed, 251 insertions, 0 deletions

diff --git a/media-libs/openjpeg/files/openjpeg-2.4.0-r3-avoid-mult-overflow.patch b/media-libs/openjpeg/files/openjpeg-2.4.0-r3-avoid-mult-overflow.patch
new file mode 100644
index 000000000000..3733a1b94545
--- /dev/null
+++ b/media-libs/openjpeg/files/openjpeg-2.4.0-r3-avoid-mult-overflow.patch
@@ -0,0 +1,52 @@
+Upstream: https://github.com/uclouvain/openjpeg/commit/1daaa0b909aebdf71be36238d16dfbec83c494ed
+Bug: https://bugs.gentoo.org/783513
+CVE-2021-29338
+--- a/src/bin/jp2/opj_compress.c
++++ b/src/bin/jp2/opj_compress.c
+@@ -1967,7 +1967,7 @@ int main(int argc, char **argv)
+                 goto fin;
+             }
+             for (i = 0; i < num_images; i++) {
+-                dirptr->filename[i] = dirptr->filename_buf + i * OPJ_PATH_LEN;
++                dirptr->filename[i] = dirptr->filename_buf + (size_t)i * OPJ_PATH_LEN;
+             }
+         }
+         if (load_images(dirptr, img_fol.imgdirpath) == 1) {
+--- a/src/bin/jp2/opj_decompress.c
++++ b/src/bin/jp2/opj_decompress.c
+@@ -1367,7 +1367,6 @@ int main(int argc, char **argv)
+     if (img_fol.set_imgdir == 1) {
+         int it_image;
+         num_images = get_num_images(img_fol.imgdirpath);
+-
+         dirptr = (dircnt_t*)calloc(1, sizeof(dircnt_t));
+         if (!dirptr) {
+             destroy_parameters(&parameters);
+@@ -1387,7 +1386,8 @@ int main(int argc, char **argv)
+             goto fin;
+         }
+         for (it_image = 0; it_image < num_images; it_image++) {
+-            dirptr->filename[it_image] = dirptr->filename_buf + it_image * OPJ_PATH_LEN;
++            dirptr->filename[it_image] = dirptr->filename_buf + (size_t)it_image *
++                                         OPJ_PATH_LEN;
+         }
+ 
+         if (load_images(dirptr, img_fol.imgdirpath) == 1) {
+--- a/src/bin/jp2/opj_dump.c
++++ b/src/bin/jp2/opj_dump.c
+@@ -529,13 +529,13 @@ int main(int argc, char *argv[])
+         }
+ 
+         for (it_image = 0; it_image < num_images; it_image++) {
+-            dirptr->filename[it_image] = dirptr->filename_buf + it_image * OPJ_PATH_LEN;
++            dirptr->filename[it_image] = dirptr->filename_buf + (size_t)it_image *
++                                         OPJ_PATH_LEN;
+         }
+ 
+         if (load_images(dirptr, img_fol.imgdirpath) == 1) {
+             goto fails;
+         }
+-
+         if (num_images == 0) {
+             fprintf(stdout, "Folder is empty\n");
+             goto fails;
diff --git a/media-libs/openjpeg/files/openjpeg-2.4.0-r3-fix-integer-overflow.patch b/media-libs/openjpeg/files/openjpeg-2.4.0-r3-fix-integer-overflow.patch
new file mode 100644
index 000000000000..6ceb5be8f6d1
--- /dev/null
+++ b/media-libs/openjpeg/files/openjpeg-2.4.0-r3-fix-integer-overflow.patch
@@ -0,0 +1,57 @@
+opj_compress/opj_uncompress: fix integer overflow in num_images
+CVE-2021-29338
+Bug 783513
+Upstream: https://github.com/uclouvain/openjpeg/commit/79c7d7af598b778c3cdcb455df23d50efc95eb3c
+--- a/src/bin/jp2/opj_compress.c
++++ b/src/bin/jp2/opj_compress.c
+@@ -1959,9 +1959,9 @@ int main(int argc, char **argv)
+         num_images = get_num_images(img_fol.imgdirpath);
+         dirptr = (dircnt_t*)malloc(sizeof(dircnt_t));
+         if (dirptr) {
+-            dirptr->filename_buf = (char*)malloc(num_images * OPJ_PATH_LEN * sizeof(
++            dirptr->filename_buf = (char*)calloc(num_images, OPJ_PATH_LEN * sizeof(
+                     char)); /* Stores at max 10 image file names*/
+-            dirptr->filename = (char**) malloc(num_images * sizeof(char*));
++            dirptr->filename = (char**) calloc(num_images, sizeof(char*));
+             if (!dirptr->filename_buf) {
+                 ret = 0;
+                 goto fin;
+--- a/src/bin/jp2/opj_decompress.c
++++ b/src/bin/jp2/opj_decompress.c
+@@ -1374,14 +1374,13 @@ int main(int argc, char **argv)
+             return EXIT_FAILURE;
+         }
+         /* Stores at max 10 image file names */
+-        dirptr->filename_buf = (char*)malloc(sizeof(char) *
+-                                             (size_t)num_images * OPJ_PATH_LEN);
++        dirptr->filename_buf = calloc((size_t) num_images, sizeof(char) * OPJ_PATH_LEN);
+         if (!dirptr->filename_buf) {
+             failed = 1;
+             goto fin;
+         }
+ 
+-        dirptr->filename = (char**) malloc((size_t)num_images * sizeof(char*));
++        dirptr->filename = (char**) calloc((size_t) num_images, sizeof(char*));
+ 
+         if (!dirptr->filename) {
+             failed = 1;
+--- a/src/bin/jp2/opj_dump.c
++++ b/src/bin/jp2/opj_dump.c
+@@ -515,13 +515,14 @@ int main(int argc, char *argv[])
+         if (!dirptr) {
+             return EXIT_FAILURE;
+         }
+-        dirptr->filename_buf = (char*)malloc((size_t)num_images * OPJ_PATH_LEN * sizeof(
+-                char)); /* Stores at max 10 image file names*/
++        /* Stores at max 10 image file names*/
++        dirptr->filename_buf = (char*) calloc((size_t) num_images,
++                                              OPJ_PATH_LEN * sizeof(char));
+         if (!dirptr->filename_buf) {
+             free(dirptr);
+             return EXIT_FAILURE;
+         }
+-        dirptr->filename = (char**) malloc((size_t)num_images * sizeof(char*));
++        dirptr->filename = (char**) calloc((size_t) num_images, sizeof(char*));
+ 
+         if (!dirptr->filename) {
+             goto fails;
diff --git a/media-libs/openjpeg/openjpeg-2.4.0-r3.ebuild b/media-libs/openjpeg/openjpeg-2.4.0-r3.ebuild
new file mode 100644
index 000000000000..7405a4c46f4e
--- /dev/null
+++ b/media-libs/openjpeg/openjpeg-2.4.0-r3.ebuild
@@ -0,0 +1,142 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+CMAKE_ECLASS=cmake
+inherit cmake-multilib flag-o-matic
+
+# Make sure that test data are not newer than release;
+# otherwise we will see "Found-But-No-Test" test failures!
+MY_TESTDATA_COMMIT="cd724fb1f93e6af41ebc68c4904f4bf2a4cd1e60"
+
+DESCRIPTION="Open-source JPEG 2000 library"
+HOMEPAGE="https://www.openjpeg.org"
+SRC_URI="https://github.com/uclouvain/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz
+	test? ( https://github.com/uclouvain/openjpeg-data/archive/${MY_TESTDATA_COMMIT}.tar.gz -> ${PN}-data_20201130.tar.gz )"
+
+LICENSE="BSD-2"
+SLOT="2/7" # based on SONAME
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE="doc static-libs test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	media-libs/lcms:2
+	media-libs/libpng:0=
+	media-libs/tiff:0
+	sys-libs/zlib:="
+DEPEND="${RDEPEND}"
+BDEPEND="
+	doc? ( app-doc/doxygen )"
+
+DOCS=( AUTHORS.md CHANGELOG.md NEWS.md README.md THANKS.md )
+
+PATCHES=(
+	"${FILESDIR}/${PN}-2.4.0-r1-gnuinstalldirs.patch" # bug 667150
+	"${FILESDIR}/${PN}-2.4.0-r2-fix-segfault.patch" # bug 832007
+	"${FILESDIR}/${PN}-2.4.0-r3-fix-integer-overflow.patch" # bug 783513
+	"${FILESDIR}/${PN}-2.4.0-r3-avoid-mult-overflow.patch" # bug 783513
+)
+
+src_prepare() {
+	if use test; then
+		mv "${WORKDIR}"/openjpeg-data-${MY_TESTDATA_COMMIT} "${WORKDIR}"/data ||
+			die "Failed to rename test data"
+	fi
+
+	cmake_src_prepare
+}
+
+multilib_src_configure() {
+	local mycmakeargs=(
+		-DBUILD_PKGCONFIG_FILES=ON # always build pkgconfig files, bug #539834
+		-DBUILD_TESTING="$(multilib_native_usex test)"
+		-DBUILD_DOC=$(multilib_native_usex doc ON OFF)
+		-DBUILD_CODEC=$(multilib_is_native_abi && echo ON || echo OFF)
+		-DBUILD_STATIC_LIBS=$(usex static-libs)
+	)
+
+	# Cheat a little bit and force disabling fixed point magic
+	# The test suite is extremely fragile to small changes
+	# bug 715130, bug 715422
+	# https://github.com/uclouvain/openjpeg/issues/1017
+	multilib_is_native_abi && use test && append-cflags "-ffp-contract=off"
+
+	cmake_src_configure
+}
+
+multilib_src_test() {
+	if ! multilib_is_native_abi ; then
+		elog "Cannot run tests for non-multilib abi."
+		return 0
+	fi
+
+	local myctestargs=
+
+	pushd "${BUILD_DIR}" > /dev/null || die
+	[[ -e CTestTestfile.cmake ]] || die "Test suite not available! Check source!"
+
+	[[ -n ${TEST_VERBOSE} ]] && myctestargs+=( --extra-verbose --output-on-failure )
+
+	echo ctest "${myctestargs[@]}" "$@"
+	if ctest "${myctestargs[@]}" "$@" ; then
+		einfo "Tests succeeded."
+		popd > /dev/null || die
+		return 0
+	else
+		local FAILEDTEST_LOG="${BUILD_DIR}/Testing/Temporary/LastTestsFailed.log"
+
+		if [[ ! -f "${FAILEDTEST_LOG}" ]] ; then
+			# Should never happen
+			die "Cannot analyze test failures: LastTestsFailed.log is missing!"
+		fi
+
+		echo ""
+		einfo "Note: Upstream is maintaining a list of known test failures."
+		einfo "We will now compare our test results against this list and sort out any known failure."
+
+		local KNOWN_FAILURES_LIST="${T}/known_failures_compiled.txt"
+		cat "${S}/tools/travis-ci/knownfailures-all.txt" > "${KNOWN_FAILURES_LIST}" || die
+
+		local ARCH_SPECIFIC_FAILURES=
+		if use amd64 ; then
+			ARCH_SPECIFIC_FAILURES="$(find "${S}/tools/travis-ci/" -name 'knownfailures-*x86_64*.txt' -print0 | sort -z | tail -z -n 1 | tr -d '\0')"
+		elif use x86 || use arm || use arm64; then
+			ARCH_SPECIFIC_FAILURES="$(find "${S}/tools/travis-ci/" -name 'knownfailures-*i386*.txt' -print0 | sort -z | tail -z -n 1 | tr -d '\0')"
+		fi
+
+		if [[ -f "${ARCH_SPECIFIC_FAILURES}" ]] ; then
+			einfo "Adding architecture specific failures (${ARCH_SPECIFIC_FAILURES}) to known failures list ..."
+			cat "${ARCH_SPECIFIC_FAILURES}" >> "${KNOWN_FAILURES_LIST}" || die
+		fi
+
+		# Logic copied from $S/tools/travis-ci/run.sh
+		local FAILEDTEST=
+		local FAILURES_LOG="${BUILD_DIR}/Testing/Temporary/failures.txt"
+		local HAS_UNKNOWN_TEST_FAILURES=0
+
+		echo ""
+
+		awk -F: '{ print $2 }' "${FAILEDTEST_LOG}" > "${FAILURES_LOG}"
+		while read FAILEDTEST; do
+			# is this failure known?
+			if grep -x "${FAILEDTEST}" "${KNOWN_FAILURES_LIST}" > /dev/null; then
+				ewarn "Test '${FAILEDTEST}' is known to fail, ignoring ..."
+				continue
+			fi
+
+			eerror "New/unknown test failure found: '${FAILEDTEST}'"
+			HAS_UNKNOWN_TEST_FAILURES=1
+		done < "${FAILURES_LOG}"
+
+		if [[ ${HAS_UNKNOWN_TEST_FAILURES} -ne 0 ]]; then
+			die "Test suite failed. New/unknown test failure(s) found!"
+		else
+			echo ""
+			einfo "Test suite passed. No new/unknown test failure(s) found!"
+		fi
+
+		return 0
+	fi
+}