| 1 | #!/bin/bash -eu
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| 2 | # Copyright 2017-2018 Glenn Randers-Pehrson
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| 3 | # Copyright 2016 Google Inc.
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| 4 | #
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| 5 | # Licensed under the Apache License, Version 2.0 (the "License");
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| 6 | # you may not use this file except in compliance with the License.
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| 7 | # You may obtain a copy of the License at
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| 8 | #
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| 9 | # http://www.apache.org/licenses/LICENSE-2.0
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| 10 | #
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| 11 | # Unless required by applicable law or agreed to in writing, software
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| 12 | # distributed under the License is distributed on an "AS IS" BASIS,
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| 13 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 14 | # See the License for the specific language governing permissions and
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| 15 | # limitations under the License.
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| 16 | #
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| 17 | # Last changed in libpng 1.6.35 [July 15, 2018]
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| 18 | #
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| 19 | # Revisions by Glenn Randers-Pehrson, 2017:
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| 20 | # 1. Build only the library, not the tools (changed "make -j$(nproc) all" to
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| 21 | # "make -j$(nproc) libpng16.la").
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| 22 | # 2. Disabled WARNING and WRITE options in pnglibconf.dfa.
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| 23 | # 3. Build zlib alongside libpng
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| 24 | ################################################################################
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| 25 |
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| 26 | # Disable logging via library build configuration control.
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| 27 | cat scripts/pnglibconf.dfa | \
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| 28 | sed -e "s/option STDIO/option STDIO disabled/" \
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| 29 | -e "s/option WARNING /option WARNING disabled/" \
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| 30 | -e "s/option WRITE enables WRITE_INT_FUNCTIONS/option WRITE disabled/" \
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| 31 | > scripts/pnglibconf.dfa.temp
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| 32 | mv scripts/pnglibconf.dfa.temp scripts/pnglibconf.dfa
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| 33 |
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| 34 | # build the libpng library.
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| 35 | autoreconf -f -i
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| 36 | ./configure --with-libpng-prefix=OSS_FUZZ_
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| 37 | make -j$(nproc) clean
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| 38 | make -j$(nproc) libpng16.la
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| 39 |
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| 40 | # build libpng_read_fuzzer.
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| 41 | $CXX $CXXFLAGS -std=c++11 -I. \
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| 42 | $SRC/libpng/contrib/oss-fuzz/libpng_read_fuzzer.cc \
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| 43 | -o $OUT/libpng_read_fuzzer \
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| 44 | -lFuzzingEngine .libs/libpng16.a -lz
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| 45 |
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| 46 | # add seed corpus.
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| 47 | find $SRC/libpng -name "*.png" | grep -v crashers | \
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| 48 | xargs zip $OUT/libpng_read_fuzzer_seed_corpus.zip
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| 49 |
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| 50 | cp $SRC/libpng/contrib/oss-fuzz/*.dict \
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| 51 | $SRC/libpng/contrib/oss-fuzz/*.options $OUT/
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