From bbc1aa0a9da1c25c5db91602e3f56fd6bd375108 Mon Sep 17 00:00:00 2001
From: Guido Vranken <guidovranken@users.noreply.github.com>
Date: Fri, 22 Jan 2021 16:06:02 +0100
Subject: [PATCH] [wolfssl] Add Botan to Cryptofuzz-based fuzzers for comparing
 outputs against (#5037)

* [wolfssl] Add Botan to Cryptofuzz-based fuzzers for comparing outputs against

* [wolfssl] Build Botan module in oracle mode

For more information see:
https://github.com/guidovranken/cryptofuzz/tree/master/modules/botan#using-botan-as-an-oracle
---
 projects/wolfssl/Dockerfile |  1 +
 projects/wolfssl/build.sh   | 21 +++++++++++++++++++--
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/projects/wolfssl/Dockerfile b/projects/wolfssl/Dockerfile
index ed5e04631..39742cc7e 100644
--- a/projects/wolfssl/Dockerfile
+++ b/projects/wolfssl/Dockerfile
@@ -22,6 +22,7 @@ RUN git clone --depth 1 https://github.com/wolfSSL/wolfssh.git
 RUN git clone --depth 1 https://github.com/guidovranken/fuzzing-headers.git
 RUN git clone --depth 1 https://github.com/guidovranken/wolf-ssl-ssh-fuzzers
 RUN git clone --depth 1 https://github.com/guidovranken/cryptofuzz
+RUN git clone --depth 1 https://github.com/randombit/botan.git
 RUN wget https://dl.bintray.com/boostorg/release/1.74.0/source/boost_1_74_0.tar.bz2
 RUN git clone https://github.com/wolfssl/oss-fuzz-targets --depth 1 $SRC/fuzz-targets
 
diff --git a/projects/wolfssl/build.sh b/projects/wolfssl/build.sh
index aefa68372..c70005a34 100755
--- a/projects/wolfssl/build.sh
+++ b/projects/wolfssl/build.sh
@@ -78,6 +78,19 @@ then
     echo -n '--operations=BignumCalc,DH_GenerateKeyPair,DH_Derive,ECC_GenerateKeyPair,ECC_PrivateToPublic,ECC_ValidatePubkey,ECDSA_Verify,ECDSA_Sign' >>extra_options.h
     echo -n '"' >>extra_options.h
 
+    # Build Botan
+    export CXXFLAGS="$CXXFLAGS -DCRYPTOFUZZ_BOTAN_IS_ORACLE"
+    cd $SRC/botan
+    if [[ $CFLAGS != *-m32* ]]
+    then
+        ./configure.py --cc-bin=$CXX --cc-abi-flags="$CXXFLAGS" --disable-shared --disable-modules=locking_allocator --build-targets=static --without-documentation
+    else
+        ./configure.py --cpu=x86_32 --cc-bin=$CXX --cc-abi-flags="$CXXFLAGS" --disable-shared --disable-modules=locking_allocator --build-targets=static --without-documentation
+    fi
+    make -j$(nproc)
+    export LIBBOTAN_A_PATH="$SRC/botan/libbotan-3.a"
+    export BOTAN_INCLUDE_PATH="$SRC/botan/build/include"
+
     # Build sp-math-all fuzzer
     cp -R $SRC/cryptofuzz/ $SRC/cryptofuzz-sp-math-all/
     cp -R $SRC/wolfssl/ $SRC/wolfssl-sp-math-all/
@@ -86,11 +99,13 @@ then
     CFLAGS="$CFLAGS -DHAVE_AES_ECB -DWOLFSSL_DES_ECB -DHAVE_ECC_SECPR2 -DHAVE_ECC_SECPR3 -DHAVE_ECC_BRAINPOOL -DHAVE_ECC_KOBLITZ -DWOLFSSL_ECDSA_SET_K -DWOLFSSL_ECDSA_SET_K_ONE_LOOP"
     ./configure $WOLFCRYPT_CONFIGURE_PARAMS --enable-sp-math-all
     make -j$(nproc)
-    export CXXFLAGS="$CXXFLAGS -DCRYPTOFUZZ_NO_OPENSSL -DCRYPTOFUZZ_WOLFCRYPT"
+    export CXXFLAGS="$CXXFLAGS -DCRYPTOFUZZ_NO_OPENSSL -DCRYPTOFUZZ_WOLFCRYPT -DCRYPTOFUZZ_BOTAN"
     export WOLFCRYPT_LIBWOLFSSL_A_PATH="$SRC/wolfssl-sp-math-all/src/.libs/libwolfssl.a"
     export WOLFCRYPT_INCLUDE_PATH="$SRC/wolfssl-sp-math-all/"
     cd $SRC/cryptofuzz-sp-math-all/modules/wolfcrypt
     make -j$(nproc)
+    cd $SRC/cryptofuzz-sp-math-all/modules/botan
+    make -j$(nproc)
     cd $SRC/cryptofuzz-sp-math-all/
     LIBFUZZER_LINK="$LIB_FUZZING_ENGINE" make -B -j$(nproc)
     cp cryptofuzz $OUT/cryptofuzz-sp-math-all
@@ -107,11 +122,13 @@ then
     CFLAGS="$CFLAGS -DHAVE_AES_ECB -DWOLFSSL_DES_ECB -DHAVE_ECC_SECPR2 -DHAVE_ECC_SECPR3 -DHAVE_ECC_BRAINPOOL -DHAVE_ECC_KOBLITZ -DWOLFSSL_ECDSA_SET_K -DWOLFSSL_ECDSA_SET_K_ONE_LOOP"
     ./configure $WOLFCRYPT_CONFIGURE_PARAMS --disable-fastmath
     make -j$(nproc)
-    export CXXFLAGS="$CXXFLAGS -DCRYPTOFUZZ_NO_OPENSSL -DCRYPTOFUZZ_WOLFCRYPT"
+    export CXXFLAGS="$CXXFLAGS -DCRYPTOFUZZ_NO_OPENSSL -DCRYPTOFUZZ_WOLFCRYPT -DCRYPTOFUZZ_BOTAN"
     export WOLFCRYPT_LIBWOLFSSL_A_PATH="$SRC/wolfssl-disable-fastmath/src/.libs/libwolfssl.a"
     export WOLFCRYPT_INCLUDE_PATH="$SRC/wolfssl-disable-fastmath/"
     cd $SRC/cryptofuzz-disable-fastmath/modules/wolfcrypt
     make -j$(nproc)
+    cd $SRC/cryptofuzz-disable-fastmath/modules/botan
+    make -j$(nproc)
     cd $SRC/cryptofuzz-disable-fastmath/
     LIBFUZZER_LINK="$LIB_FUZZING_ENGINE" make -B -j$(nproc)
     cp cryptofuzz $OUT/cryptofuzz-disable-fastmath