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1#!/bin/bash -eu
2# Copyright 2019 Google Inc.
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#      http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15#
16################################################################################
17
18# Ignore memory leaks from python scripts invoked in the build
19export ASAN_OPTIONS="detect_leaks=0"
20export MSAN_OPTIONS="halt_on_error=0:exitcode=0:report_umrs=0"
21
22# Remove -pthread from CFLAGS, this trips up ./configure
23# which thinks pthreads are available without any CLI flags
24CFLAGS=${CFLAGS//"-pthread"/}
25
26FLAGS=()
27case $SANITIZER in
28  address)
29    FLAGS+=("--with-address-sanitizer")
30    ;;
31  memory)
32    FLAGS+=("--with-memory-sanitizer")
33    # installing ensurepip takes a while with MSAN instrumentation, so
34    # we disable it here
35    FLAGS+=("--without-ensurepip")
36    # -msan-keep-going is needed to allow MSAN's halt_on_error to function
37    FLAGS+=("CFLAGS=-mllvm -msan-keep-going=1")
38    ;;
39  undefined)
40    FLAGS+=("--with-undefined-behavior-sanitizer")
41    ;;
42esac
43
44export CPYTHON_INSTALL_PATH=$SRC/cpython-install
45rm -rf $CPYTHON_INSTALL_PATH
46mkdir $CPYTHON_INSTALL_PATH
47
48cd $SRC/cpython
49cp $SRC/python-library-fuzzers/python_coverage.h Python/
50
51# Patch the interpreter to record code coverage
52sed -i '1 s/^.*$/#include "python_coverage.h"/g' Python/ceval.c
53sed -i 's/case TARGET\(.*\): {/\0\nfuzzer_record_code_coverage(f->f_code, f->f_lasti);/g' Python/ceval.c
54
55./configure "${FLAGS[@]:-}" --prefix=$CPYTHON_INSTALL_PATH
56make -j$(nproc)
57make install
58
59cp -R $CPYTHON_INSTALL_PATH $OUT/
60
61cd $SRC/python-library-fuzzers
62make
63
64cp $SRC/python-library-fuzzers/fuzzer-html $OUT/
65cp $SRC/python-library-fuzzers/html.py $OUT/
66zip -j $OUT/fuzzer-html_seed_corpus.zip corp-html/*
67
68cp $SRC/python-library-fuzzers/fuzzer-email $OUT/
69cp $SRC/python-library-fuzzers/email.py $OUT/
70zip -j $OUT/fuzzer-email_seed_corpus.zip corp-email/*
71
72cp $SRC/python-library-fuzzers/fuzzer-httpclient $OUT/
73cp $SRC/python-library-fuzzers/httpclient.py $OUT/
74zip -j $OUT/fuzzer-httpclient_seed_corpus.zip corp-httpclient/*
75
76cp $SRC/python-library-fuzzers/fuzzer-json $OUT/
77cp $SRC/python-library-fuzzers/json.py $OUT/
78zip -j $OUT/fuzzer-json_seed_corpus.zip corp-json/*
79
80cp $SRC/python-library-fuzzers/fuzzer-difflib $OUT/
81cp $SRC/python-library-fuzzers/difflib.py $OUT/
82zip -j $OUT/fuzzer-difflib_seed_corpus.zip corp-difflib/*
83
84cp $SRC/python-library-fuzzers/fuzzer-csv $OUT/
85cp $SRC/python-library-fuzzers/csv.py $OUT/
86zip -j $OUT/fuzzer-csv_seed_corpus.zip corp-csv/*
87
88cp $SRC/python-library-fuzzers/fuzzer-decode $OUT/
89cp $SRC/python-library-fuzzers/decode.py $OUT/
90zip -j $OUT/fuzzer-decode_seed_corpus.zip corp-decode/*
91cp $SRC/python-library-fuzzers/fuzzer-decode.dict $OUT/
92