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record header fuzz

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This commit is contained in:
JacobBarthelmeh
2014-08-12 11:56:20 -06:00
parent 58caf70dc9
commit a18602951b
2 changed files with 13 additions and 1 deletions
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3
cyassl/ssl.h
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@@ -935,7 +935,8 @@ enum fuzzer_type {
FUZZ_HMAC = 0, FUZZ_HMAC = 0,
FUZZ_ENCRYPT = 1, FUZZ_ENCRYPT = 1,
FUZZ_SIGNATURE = 2, FUZZ_SIGNATURE = 2,
FUZZ_HASH = 3 FUZZ_HASH = 3,
FUZZ_HEAD = 4
}; };
typedef int (*CallbackFuzzer)(const unsigned char* buf, int sz, int type, typedef int (*CallbackFuzzer)(const unsigned char* buf, int sz, int type,

11
src/internal.c
View File

@@ -2959,6 +2959,11 @@ static int GetRecordHeader(CYASSL* ssl, const byte* input, word32* inOutIdx,
RecordLayerHeader* rh, word16 *size) RecordLayerHeader* rh, word16 *size)
{ {
if (!ssl->options.dtls) { if (!ssl->options.dtls) {
#ifdef HAVE_FUZZER
if (ssl->fuzzerCb)
ssl->fuzzerCb(input + *inOutIdx, RECORD_HEADER_SZ, FUZZ_HEAD,
ssl->ctx);
#endif
XMEMCPY(rh, input + *inOutIdx, RECORD_HEADER_SZ); XMEMCPY(rh, input + *inOutIdx, RECORD_HEADER_SZ);
*inOutIdx += RECORD_HEADER_SZ; *inOutIdx += RECORD_HEADER_SZ;
ato16(rh->length, size); ato16(rh->length, size);
@@ -2974,6 +2979,12 @@ static int GetRecordHeader(CYASSL* ssl, const byte* input, word32* inOutIdx,
*inOutIdx += 4; /* advance past rest of seq */ *inOutIdx += 4; /* advance past rest of seq */
ato16(input + *inOutIdx, size); ato16(input + *inOutIdx, size);
*inOutIdx += LENGTH_SZ; *inOutIdx += LENGTH_SZ;
#ifdef HAVE_FUZZER
if (ssl->fuzzerCb)
ssl->fuzzerCb(input + *inOutIdx - LENGTH_SZ - 8 - ENUM_LEN -
VERSION_SZ, ENUM_LEN + VERSION_SZ + 8 + LENGTH_SZ,
FUZZ_HEAD, ssl->ctx);
#endif
#endif #endif
} }