fix signature check crash

0001-Fix-possible-crash-when-using-openssl-for-digital-si.patch

@@ -0,0 +1,27 @@
+From a38556c13b132c2e3b275fac0d2e2f0f32895036 Mon Sep 17 00:00:00 2001
+Message-Id: <a38556c13b132c2e3b275fac0d2e2f0f32895036.1590932097.git.mjg@fedoraproject.org>
+From: Paul Gardiner <paul.gardiner@artifex.com>
+Date: Tue, 12 May 2020 17:21:18 +0100
+Subject: [PATCH] Fix possible crash when using openssl for digital signature
+ support.
+
+---
+ source/helpers/pkcs7/pkcs7-openssl.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/source/helpers/pkcs7/pkcs7-openssl.c b/source/helpers/pkcs7/pkcs7-openssl.c
+index dfb99bb8c..a0a15fbd5 100644
+--- a/source/helpers/pkcs7/pkcs7-openssl.c
++++ b/source/helpers/pkcs7/pkcs7-openssl.c
+@@ -606,7 +606,7 @@ static char *x509_get_name_entry_string(fz_context *ctx, X509_NAME *name, int ni
+ 	int idx = X509_NAME_get_index_by_NID(name, nid, -1);
+ 	X509_NAME_ENTRY *entry = X509_NAME_get_entry(name, idx);
+ 	ASN1_STRING *data = X509_NAME_ENTRY_get_data(entry);
+-	return fz_strdup(ctx, (const char *)ASN1_STRING_get0_data(data));
++	return data ? fz_strdup(ctx, (const char *)ASN1_STRING_get0_data(data)) : NULL;
+ }
+ 
+ static pdf_pkcs7_designated_name *x509_designated_name(fz_context *ctx, X509 *x509)
+-- 
+2.27.0.rc1.210.gb37d18b052
+

mupdf.spec

@@ -1,6 +1,6 @@
 Name:           mupdf
 Version:        1.17.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        A lightweight PDF viewer and toolkit
 License:        AGPLv3+
 URL:            http://mupdf.com/
@@ -23,6 +23,7 @@ Provides:       bundled(freeglut-devel) = 3.0.0
 Provides:       bundled(mujs-devel) = 1.0.5
 Patch0:         0001-fix-build-on-big-endian.patch
 Patch1:         0001-fix-build-with-gcc-10.patch
+Patch2:         0001-Fix-possible-crash-when-using-openssl-for-digital-si.patch
 
 %description
 MuPDF is a lightweight PDF viewer and toolkit written in portable C.
@@ -56,6 +57,7 @@ do
 done
 %patch0 -p1 -d thirdparty/lcms2
 %patch1 -p1 -d thirdparty/freeglut
+%patch2 -p1
 echo > user.make "\
   USE_SYSTEM_FREETYPE := yes
   USE_SYSTEM_HARFBUZZ := yes
@@ -102,6 +104,9 @@ cd %{buildroot}/%{_bindir} && ln -s %{name}-x11 %{name}
 %{_libdir}/lib%{name}*.a
 
 %changelog
+* Sun May 31 2020 Michael J Gruber <mjg@fedoraproject.org> - 1.17.0-2
+- fix signature check crash
+
 * Mon May 11 2020 Michael J Gruber <mjg@fedoraproject.org> - 1.17.0-1
 - rebase to 1.17.0 (bz #1831652)