From 75fb8e55aa08813169d93020574fcbb7b2a1f5f0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tim=20R=C3=BChsen?= <tim.ruehsen@gmx.de>
Date: Wed, 12 Jul 2017 17:02:34 +0200
Subject: [PATCH] [libpsl] Add fuzzers for conditional code paths (#712)

Libpsl can either be built with libicu, libidn2, libidn or with
basic internal code. Each built uses different code paths via
conditional compilation. To cover all these paths during fuzzing
and regression testing, new fuzzer targets are added by this commit.
---
 projects/libpsl/Dockerfile |  2 ++
 projects/libpsl/build.sh   | 32 ++++++++++++++++++++++++++++----
 2 files changed, 30 insertions(+), 4 deletions(-)

diff --git a/projects/libpsl/Dockerfile b/projects/libpsl/Dockerfile
index 93280eea7..dbf703d8a 100644
--- a/projects/libpsl/Dockerfile
+++ b/projects/libpsl/Dockerfile
@@ -35,6 +35,8 @@ RUN apt-get update && apt-get install -y \
 
 RUN git clone --depth=1 --recursive https://git.savannah.gnu.org/git/libunistring.git
 RUN git clone --depth=1 --recursive https://gitlab.com/libidn/libidn2.git
+RUN git clone --depth=1 https://git.savannah.gnu.org/git/libidn.git
+RUN wget http://download.icu-project.org/files/icu4c/59.1/icu4c-59_1-src.tgz && tar xvfz icu4c-59_1-src.tgz
 
 RUN git clone --depth=1 --recursive https://github.com/rockdaboot/libpsl.git
 
diff --git a/projects/libpsl/build.sh b/projects/libpsl/build.sh
index 967e2ff7b..d1b2420d2 100755
--- a/projects/libpsl/build.sh
+++ b/projects/libpsl/build.sh
@@ -20,12 +20,27 @@ export PKG_CONFIG_PATH=$DEPS_PATH/lib/pkgconfig
 export CPPFLAGS="-I$DEPS_PATH/include"
 export LDFLAGS="-L$DEPS_PATH/lib"
 
+cd $SRC/icu/source
+./configure --disable-shared --enable-static --disable-extras --disable-icuio --disable-layoutex \
+  --disable-tests --disable-samples --with-data-packaging=static --prefix=$DEPS_PATH
+# ugly hack to avoid build error
+echo '#include <locale.h>' >>i18n/digitlst.h
+make -j$(nproc)
+make install
+
 cd $SRC/libunistring
 ./autogen.sh
 ./configure --enable-static --disable-shared --prefix=$DEPS_PATH
 make -j$(nproc)
 make install
 
+cd $SRC/libidn
+make CFGFLAGS="--enable-static --disable-shared --disable-doc --prefix=$DEPS_PATH"
+make clean
+make -j1
+make -j$(nproc) check
+make install
+
 cd $SRC/libidn2
 ./bootstrap
 ./configure --enable-static --disable-shared --disable-doc --disable-gcc-warnings --prefix=$DEPS_PATH
@@ -38,12 +53,21 @@ export ASAN_OPTIONS=detect_leaks=0
 
 cd $SRC/libpsl
 ./autogen.sh
-./configure --enable-static --disable-shared --disable-gtk-doc --enable-runtime=libidn2 --enable-builtin=libidn2 --prefix=$DEPS_PATH
-make -j$(nproc)
-make -j$(nproc) check
+export CXXFLAGS="$CXXFLAGS -L$DEPS_PATH/lib/"
+for build in libicu libidn2 libidn none; do
+  if test $build = "none"; then
+    BUILD_FLAGS="--disable-runtime --disable-builtin"
+  else
+    BUILD_FLAGS="--enable-runtime=$build --enable-builtin=$build"
+  fi
+  LIBS="-lstdc++" ./configure --enable-static --disable-shared --disable-gtk-doc $BUILD_FLAGS --prefix=$DEPS_PATH
+  make clean
+  make -j$(nproc)
+  make -j$(nproc) check
+  make -C fuzz oss-fuzz
+done
 
 cd fuzz
-CXXFLAGS="$CXXFLAGS -L$DEPS_PATH/lib/" make oss-fuzz
 find . -name '*_fuzzer.dict' -exec cp -v '{}' $OUT ';'
 find . -name '*_fuzzer.options' -exec cp -v '{}' $OUT ';'