Simplify rust project setup. (#3830)

* Simplify rust project setup.

- Add rust and cargo-fuzz in base builder.
- Set RUSTC_BOOSTRAP to make ASan available.
- Set RUSTFLAGS and C,CXXFLAGS properly.

infra/base-images/base-builder/Dockerfile

@@ -15,14 +15,16 @@
 ################################################################################
 
 FROM gcr.io/oss-fuzz-base/base-clang
-RUN apt-get install -y git \
-    subversion \
-    jq \
-    python3 \
-    zip \
-    make \
+RUN apt-get update && apt-get install -y \
     binutils-dev \
-    libc6-dev-i386
+    curl \
+    git \
+    jq \
+    libc6-dev-i386 \
+    make \
+    python3 \
+    subversion \
+    zip
 
 # Download and install the latest stable Go.
 ADD https://storage.googleapis.com/golang/getgo/installer_linux $SRC/
@@ -41,6 +43,13 @@ ENV PATH $PATH:/root/.go/bin:$GOPATH/bin
 RUN go get -u github.com/mdempsky/go114-fuzz-build && \
     ln -s $GOPATH/bin/go114-fuzz-build $GOPATH/bin/go-fuzz
 
+# Install Rust and cargo-fuzz for libFuzzer instrumentation.
+ENV CARGO_HOME=/rust
+ENV RUSTUP_HOME=/rust/rustup
+ENV PATH=$PATH:/rust/bin
+RUN curl https://sh.rustup.rs | sh -s -- -y --default-toolchain=nightly
+RUN cargo install cargo-fuzz
+
 # Default build flags for various sanitizers.
 ENV SANITIZER_FLAGS_address "-fsanitize=address -fsanitize-address-use-after-scope"
 

infra/base-images/base-builder/compile

@@ -63,8 +63,24 @@ if [ $FUZZING_ENGINE = "none" ]; then
   export COVERAGE_FLAGS=
 fi
 
-export CFLAGS="$CFLAGS $SANITIZER_FLAGS $COVERAGE_FLAGS"
-export CXXFLAGS="$CFLAGS $CXXFLAGS_EXTRA"
+if [[ $FUZZING_LANGUAGE == "rust" ]]; then
+  # Rust does not support sanitizers and coverage flags via CFLAGS/CXXFLAGS.
+  # Instead, use RUSTFLAGS.
+  # FIXME: Support code coverage once support is in.
+  # See https://github.com/rust-lang/rust/issues/34701.
+  export RUSTFLAGS="--cfg fuzzing -Zsanitizer=${SANITIZER} -Cdebuginfo=1 -Cforce-frame-pointers"
+
+  # Add Rust libfuzzer flags.
+  # See https://github.com/rust-fuzz/libfuzzer/blob/master/build.rs#L12.
+  export CUSTOM_LIBFUZZER_PATH="$LIB_FUZZING_ENGINE_DEPRECATED"
+  export CUSTOM_LIBFUZZER_STD_CXX=c++
+
+  # Set RUSTC_BOOTSTRAP to get nightly features like sanitizers.
+  export RUSTC_BOOTSTRAP=1
+else
+  export CFLAGS="$CFLAGS $SANITIZER_FLAGS $COVERAGE_FLAGS"
+  export CXXFLAGS="$CFLAGS $CXXFLAGS_EXTRA"
+fi
 
 echo "CC=$CC"
 echo "CXX=$CXX"

projects/ecc-diff-fuzzer/Dockerfile

@@ -17,8 +17,6 @@
 FROM gcr.io/oss-fuzz-base/base-builder
 MAINTAINER p.antoine@catenacyber.fr
 RUN apt-get update && apt-get install -y make cmake bzip2 autoconf automake gettext libtool python nodejs npm
-ENV CARGO_HOME=/rust RUSTUP_HOME=/rust/rustup PATH=$PATH:/rust/bin
-RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
 RUN rustup target add i686-unknown-linux-gnu
 RUN npm install -g browserify
 RUN npm install elliptic

projects/libra/Dockerfile

@@ -21,10 +21,6 @@ MAINTAINER davidwg@fb.com
 # install other tools we might need
 RUN apt-get update && apt-get install -y cmake curl
 
-# install rust and cargo-fuzz
-ENV CARGO_HOME=/rust RUSTUP_HOME=/rust/rustup PATH=$PATH:/rust/bin
-RUN curl https://sh.rustup.rs | sh -s -- -y 
-
 # get libra
 RUN git clone --depth 1 https://github.com/libra/libra $SRC/libra
 WORKDIR $SRC/libra

projects/libra/build.sh

@@ -56,9 +56,6 @@ export CUSTOM_LIBFUZZER_PATH="$LIB_FUZZING_ENGINE_DEPRECATED"
 export CUSTOM_LIBFUZZER_STD_CXX=c++
 # export CUSTOM_LIBFUZZER_STD_CXX=none 
 
-# RUSTC_BOOTSTRAP: to get some nightly features like ASAN
-export RUSTC_BOOTSTRAP=1 
-
 # export fuzzing flags
 RUSTFLAGS="$RUSTFLAGS --cfg fuzzing"          # used to change code logic
 RUSTFLAGS="$RUSTFLAGS -Cdebug-assertions"     # to get debug_assert in rust

projects/mp4parse-rust/Dockerfile

@@ -18,10 +18,6 @@ FROM gcr.io/oss-fuzz-base/base-builder
 MAINTAINER mgregan@mozilla.com
 RUN apt-get update && apt-get install -y make autoconf automake libtool curl cmake python llvm-dev libclang-dev clang
 
-ENV CARGO_HOME=/rust RUSTUP_HOME=/rust/rustup PATH=$PATH:/rust/bin
-RUN curl https://sh.rustup.rs | sh -s -- -y --default-toolchain=nightly
-RUN cargo install cargo-fuzz
-
 RUN git clone --depth 1 https://github.com/mozilla/mp4parse-rust mp4parse-rust
 WORKDIR mp4parse-rust
 

projects/serde_json/Dockerfile

@@ -17,10 +17,6 @@ FROM gcr.io/oss-fuzz-base/base-builder
 MAINTAINER david@adalogics.com
 RUN apt-get update && apt-get install -y make autoconf automake libtool curl cmake python llvm-dev libclang-dev clang
 
-ENV CARGO_HOME=/rust RUSTUP_HOME=/rust/rustup PATH=$PATH:/rust/bin
-RUN curl https://sh.rustup.rs | sh -s -- -y --default-toolchain=nightly
-RUN cargo install cargo-fuzz
-
 RUN git clone --depth 1 https://github.com/serde-rs/json json
 WORKDIR $SRC
 

projects/wasmtime/Dockerfile

@@ -18,10 +18,6 @@ FROM gcr.io/oss-fuzz-base/base-builder
 MAINTAINER foote@fastly.com
 RUN apt-get update && apt-get install -y make autoconf automake libtool curl cmake python llvm-dev libclang-dev clang
 
-ENV CARGO_HOME=/rust RUSTUP_HOME=/rust/rustup PATH=$PATH:/rust/bin
-RUN curl https://sh.rustup.rs | sh -s -- -y --default-toolchain=nightly
-RUN cargo install cargo-fuzz
-
 RUN git clone --depth 1 https://github.com/bytecodealliance/wasmtime wasmtime
 WORKDIR wasmtime
 RUN git submodule update --init --recursive