mirror of https://github.com/google/oss-fuzz.git
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/* Copyright 2021 Google LLC
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/*
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* We convert addr2line.c into a header file to make convenient for fuzzing.
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* We do this for several of the binutils applications when creating
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* the binutils fuzzers.
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*/
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#include "fuzz_addr2line.h"
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/* for precondition checks */
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#include "ada_addr2line.h"
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/*
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* Preconditions that should be met so we won't run into bfd_fatal calls.
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* The fuzz_slurp_symtab and fuzz_preconditions_check implement simplified
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* versions of process_file and slurp_symtab of addr2line that only incorporates
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* the logic resulting in bfd_fatal calls.
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* If fuzz_preconditions_check returns 1, it means process_file should be
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* good to be called and there won't be any bfd_fatal call.
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*/
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int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
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int
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LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
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{
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char filename[256];
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sprintf(filename, "/tmp/libfuzzer.%d", getpid());
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FILE *fp = fopen(filename, "wb");
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if (!fp) {
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return 0;
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}
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fwrite(data, size, 1, fp);
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fclose(fp);
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program_name = filename;
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char **c2 = malloc(sizeof(char*)*6);
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char *c2_1 = strdup("AAABC");
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char *c2_2 = strdup("BBC");
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char *c2_3 = strdup("0xbeefbeef");
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char *c2_4 = strdup("0xcafebabe");
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char *c2_5 = strdup("5123423");
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c2[0] = c2_1;
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c2[1] = c2_2;
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c2[2] = c2_3;
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c2[3] = c2_4;
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c2[4] = c2_5;
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c2[5] = NULL;
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naddr = 2;
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addr = c2;
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// Main fuzz entrypoint in addr2line.c
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if (fuzz_preconditions_check(filename, NULL) == 1) {
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process_file(filename, NULL, NULL);
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}
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free(c2);
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free(c2_1);
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free(c2_2);
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free(c2_3);
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free(c2_4);
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free(c2_5);
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unlink(filename);
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return 0;
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}
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