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tests: add a fuzzer for the json parser and dumper
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30
src/fuzz/fuzz-json.c
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30
src/fuzz/fuzz-json.c
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@ -0,0 +1,30 @@
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/* SPDX-License-Identifier: LGPL-2.1+ */
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#include "alloc-util.h"
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#include "fd-util.h"
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#include "fuzz.h"
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#include "json.h"
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int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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_cleanup_free_ char *out = NULL; /* out should be freed after g */
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size_t out_size;
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_cleanup_fclose_ FILE *f = NULL, *g = NULL;
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_cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
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if (size == 0)
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return 0;
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f = fmemopen((char*) data, size, "re");
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assert_se(f);
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if (json_parse_file(f, NULL, &v, NULL, NULL) < 0)
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return 0;
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g = open_memstream(&out, &out_size);
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assert_se(g);
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json_variant_dump(v, 0, g, NULL);
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json_variant_dump(v, JSON_FORMAT_PRETTY|JSON_FORMAT_COLOR|JSON_FORMAT_SOURCE, g, NULL);
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return 0;
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}
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@ -37,6 +37,10 @@ fuzzers += [
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libsystemd_network],
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[]],
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[['src/fuzz/fuzz-json.c'],
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[libshared],
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[]],
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[['src/fuzz/fuzz-unit-file.c'],
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[libcore,
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libshared],
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@ -48,5 +48,8 @@ zip -jqr $OUT/fuzz-dns-packet_seed_corpus.zip $df/packet
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install -Dt $OUT/src/shared/ $build/src/shared/libsystemd-shared-*.so
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wget -O $OUT/fuzz-json_seed_corpus.zip https://storage.googleapis.com/skia-fuzzer/oss-fuzz/skjson_seed_corpus.zip
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wget -O $OUT/fuzz-json.dict https://raw.githubusercontent.com/rc0r/afl-fuzz/master/dictionaries/json.dict
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find $build -maxdepth 1 -type f -executable -name "fuzz-*" -exec mv {} $OUT \;
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cp src/fuzz/*.options $OUT
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