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- /* Copyright (c) 2016-2019, The Tor Project, Inc. */
- /* See LICENSE for licensing information */
- #define CONSDIFF_PRIVATE
- #include "orconfig.h"
- #include "core/or/or.h"
- #include "feature/dircommon/consdiff.h"
- #include "test/fuzz/fuzzing.h"
- static int
- mock_consensus_compute_digest_(const char *c, size_t len,
- consensus_digest_t *d)
- {
- (void)c;
- (void)len;
- memset(d->sha3_256, 3, sizeof(d->sha3_256));
- return 0;
- }
- int
- fuzz_init(void)
- {
- MOCK(consensus_compute_digest, mock_consensus_compute_digest_);
- MOCK(consensus_compute_digest_as_signed, mock_consensus_compute_digest_);
- return 0;
- }
- int
- fuzz_cleanup(void)
- {
- UNMOCK(consensus_compute_digest);
- UNMOCK(consensus_compute_digest_as_signed);
- return 0;
- }
- int
- fuzz_main(const uint8_t *stdin_buf, size_t data_size)
- {
- #define SEP "=====\n"
- #define SEPLEN strlen(SEP)
- const uint8_t *separator = tor_memmem(stdin_buf, data_size, SEP, SEPLEN);
- if (! separator)
- return 0;
- size_t c1_len = separator - stdin_buf;
- const char *c1 = (const char *)stdin_buf;
- size_t c2_len = data_size - c1_len - SEPLEN;
- const char *c2 = (const char *)separator + SEPLEN;
- const char *cp = memchr(c1, 0, c1_len);
- if (cp)
- c1_len = cp - c1;
- cp = memchr(c2, 0, c2_len);
- if (cp)
- c2_len = cp - c2;
- char *c3 = consensus_diff_generate(c1, c1_len, c2, c2_len);
- if (c3) {
- char *c4 = consensus_diff_apply(c1, c1_len, c3, strlen(c3));
- tor_assert(c4);
- int equal = (c2_len == strlen(c4)) && fast_memeq(c2, c4, c2_len);
- if (! equal) {
- //printf("%s\n", escaped(c1));
- //printf("%s\n", escaped(c2));
- printf("%s\n", escaped(c3));
- printf("%s\n", escaped(c4));
- }
- tor_assert(equal);
- tor_free(c3);
- tor_free(c4);
- }
- return 0;
- }
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