commit cb060bd08959295c992bed27961b982a124d8bd2
author Alex Deymo <deymo@chromium.org> Mon May 12 20:34:02 2014
committer chrome-internal-fetch <chrome-internal-fetch@google.com> Tue May 13 20:49:05 2014
tree a8a7796cc1ef8ffe0ac54db816b9f9b9ec4a27b2
parent 393967322f0ef38cdd43fc65131432e20213f406

bspatch: Add a sanity-check for malformed patches.

This patch adds an extra sanity-check for malformed patches. A
corrupted patch should be cached by update_engine before reaching
this step anyway.

BUG=chromium:372525
TEST=emerge-link bsdiff && chroot/build/link/usr/bin/bspatch foo bar malformed_patch
bspatch segfaults without the patch and shows the error message with it.

Change-Id: I8007b41cf3ab6558a99ffd6085e382f1c32f9bdf
Reviewed-on: https://chromium-review.googlesource.com/199377
Tested-by: Alex Deymo <deymo@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Alex Deymo <deymo@chromium.org>