[gstreamer] several updates + add new "typefind" target (#938)

* gstreamer: build glib ourselves

Allows having full backtraces of leaks amongst other things

* gstreamer: Don't build orc

it's still too problematic

* gstreamer: Add new typefind fuzzing target

Covers just the typefind element, which has a lot of parsing code within

2 files changed, 32 insertions, 6 deletions

diff --git a/projects/gstreamer/Dockerfile b/projects/gstreamer/Dockerfile
index da67b6f8a..4df66ca4c 100644
--- a/projects/gstreamer/Dockerfile
+++ b/projects/gstreamer/Dockerfile
@@ -23,13 +23,14 @@ MAINTAINER bilboed@bilboed.com
 RUN sed -i '/^#\sdeb-src /s/^#//' "/etc/apt/sources.list" && \
    apt-get update && \
    apt-get install -y make autoconf automake libtool build-essential \
-    autopoint pkg-config bison flex gettext libglib2.0-dev libffi-dev liblzma-dev \
-    libvorbis-dev libtheora-dev libogg-dev git-annex
+    autopoint pkg-config bison flex gettext libffi-dev liblzma-dev \
+    libvorbis-dev libtheora-dev libogg-dev zlib1g-dev
+
+ADD https://ftp.gnome.org/pub/gnome/sources/glib/2.54/glib-2.54.2.tar.xz $SRC
 
 # Checkout all development repositories
 #RUN for i in orc  gstreamer gst-plugins-base gst-plugins-good gst-plugins-bad gst-plugins-ugly gst-libav; do git clone --depth 1 --recursive https://anongit.freedesktop.org/git/gstreamer/$i $i; done  
 RUN \
-  git clone --depth 1 --recursive https://anongit.freedesktop.org/git/gstreamer/orc orc && \
   git clone --depth 1 --recursive https://anongit.freedesktop.org/git/gstreamer/gstreamer gstreamer && \
   git clone --depth 1 --recursive https://anongit.freedesktop.org/git/gstreamer/gst-plugins-base gst-plugins-base && \
   git clone --depth 1 --recursive https://anongit.freedesktop.org/git/gstreamer/gst-ci gst-ci
diff --git a/projects/gstreamer/build.sh b/projects/gstreamer/build.sh
index dc1a5c4f9..3c0f07d35 100755
--- a/projects/gstreamer/build.sh
+++ b/projects/gstreamer/build.sh
@@ -21,12 +21,19 @@ PREFIX=$WORK/prefix
 PLUGIN_DIR=$PREFIX/lib/gstreamer-1.0
 export PKG_CONFIG_PATH=$PREFIX/lib/pkgconfig
 mkdir -p $PREFIX
+export PATH=$PREFIX/bin:$PATH
 cd $WORK
 
 # Minimize gst-debug level/code
 export CFLAGS="$CFLAGS -DGST_LEVEL_MAX=2"
 
-for i in orc gstreamer gst-plugins-base;
+tar xvJf $SRC/glib-2.54.2.tar.xz
+cd glib-2.54.2
+./configure --prefix=$PREFIX --enable-static --disable-shared --disable-libmount --with-pcre=internal && make -j$(nproc) && make install
+cd ..
+
+
+for i in gstreamer gst-plugins-base;
 do
     mkdir -p $i
     cd $i
@@ -39,12 +46,12 @@ do
 done
 
 #finally build the binary \o/
-BUILD_CFLAGS="$CFLAGS `pkg-config --static --cflags glib-2.0 gstreamer-1.0 gstreamer-pbutils-1.0 gstreamer-video-1.0 gstreamer-audio-1.0 gstreamer-app-1.0 orc-0.4`"
+BUILD_CFLAGS="$CFLAGS `pkg-config --static --cflags glib-2.0 gstreamer-1.0 gstreamer-pbutils-1.0 gstreamer-video-1.0 gstreamer-audio-1.0 gstreamer-app-1.0`"
 
 # List of dependencies libraries we grab from pkg-config
 # Should also include dependencies of dependencies (ex: libvorbis depends on libogg)
 
-PKG_DEPS="glib-2.0 gstreamer-1.0 gstreamer-pbutils-1.0 gstreamer-video-1.0 gstreamer-audio-1.0 orc-0.4 \
+PKG_DEPS="glib-2.0 gstreamer-1.0 gstreamer-pbutils-1.0 gstreamer-video-1.0 gstreamer-audio-1.0 \
   gstreamer-riff-1.0 gstreamer-tag-1.0 gstreamer-app-1.0 zlib \
   ogg vorbis vorbisenc theoraenc theoradec theora"
 
@@ -95,3 +102,21 @@ echo ">>>> Installing OGG corpus"
 echo
 
 cp $SRC/*_seed_corpus.zip $OUT
+
+echo ">>>> BUILDING typefind.o"
+echo
+
+$CC $CFLAGS $BUILD_CFLAGS -c $SRC/gst-ci/fuzzing/typefind.c -o $SRC/gst-ci/fuzzing/typefind.o
+
+echo
+echo ">>>> LINKING"
+echo
+
+$CXX $CXXFLAGS \
+      -o $OUT/typefind \
+      $PREDEPS_LDFLAGS \
+      $SRC/gst-ci/fuzzing/typefind.o \
+      $PLUGINS \
+      $BUILD_LDFLAGS \
+      $LIB_FUZZING_ENGINE \
+      -Wl,-Bdynamic