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Try4 fuzz decode receive #305
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583a682
Add cmake directives
sescandor fc60268
It compiles
sescandor fcbbfd9
Fix issue with address token length being undefined.
sescandor adc0f26
Fix issue with missing cipher suites
sescandor b3de41f
For now, make the save session ticket callback no longer do anything …
sescandor e79c404
Clean up
sescandor d49a4d0
Fix assert failures for handshake properties
sescandor e640cbe
Initialize handshake properties to NULL before each use; Make a new t…
sescandor 62ca172
Remember to free allocated memory in the fuzz target
sescandor 3055894
Use proper quic function to clean up the connection.
sescandor a26f68c
Remember to free the address info structure after using getaddrinfo
sescandor 23b9bbc
Add corpus for the decode_receive fuzz target
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corpus_decode_receive/68f0f55b44dbd52da6634b03aabe8e9747aae89f
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#include <picotls.h> | ||
#include <stdio.h> | ||
#include <netdb.h> | ||
#include "quicly.h" | ||
#include "quicly/defaults.h" | ||
#include "quicly/frame.h" | ||
#include "../deps/picotls/include/picotls/openssl.h" | ||
|
||
void __sanitizer_cov_trace_pc(void) | ||
{ | ||
} | ||
|
||
int save_session_ticket_cb(ptls_save_ticket_t *_self, ptls_t *tls, ptls_iovec_t src) | ||
{ | ||
return 0; | ||
} | ||
|
||
static int on_client_hello_cb(ptls_on_client_hello_t *_self, ptls_t *tls, ptls_on_client_hello_parameters_t *params) | ||
{ | ||
return 0; | ||
} | ||
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||
static ptls_key_exchange_algorithm_t *key_exchanges[128]; | ||
static ptls_cipher_suite_t *cipher_suites[128]; | ||
|
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static ptls_save_ticket_t save_session_ticket = {save_session_ticket_cb}; | ||
static ptls_on_client_hello_t on_client_hello = {on_client_hello_cb}; | ||
|
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) | ||
{ | ||
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||
ptls_context_t tlsctx = {.random_bytes = ptls_openssl_random_bytes, | ||
.get_time = &ptls_get_time, | ||
.key_exchanges = key_exchanges, | ||
.cipher_suites = ptls_openssl_cipher_suites, | ||
.require_dhe_on_psk = 1 , | ||
.save_ticket = &save_session_ticket, | ||
.on_client_hello = &on_client_hello}; | ||
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||
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int ret; | ||
quicly_context_t ctx; | ||
ctx = quicly_spec_context; | ||
ctx.tls = &tlsctx; | ||
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quicly_decoded_packet_t p; | ||
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struct sockaddr sa; | ||
socklen_t salen; | ||
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quicly_conn_t *conn = NULL; | ||
quicly_cid_plaintext_t next_cid; | ||
const char* host = "127.0.0.1"; | ||
const char* port = "4422"; | ||
ptls_iovec_t *resumption_token = (ptls_iovec_t *)malloc(sizeof(ptls_iovec_t)); | ||
ptls_handshake_properties_t hs_properties = (ptls_handshake_properties_t){{{{NULL}}}}; | ||
quicly_transport_parameters_t resumed_transport_params; | ||
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struct addrinfo hint, *res; | ||
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memset(&hint, 0, sizeof(hint)); | ||
hint.ai_family = AF_INET; | ||
hint.ai_socktype = SOCK_DGRAM; | ||
hint.ai_protocol = IPPROTO_UDP; | ||
hint.ai_flags = AI_ADDRCONFIG | AI_NUMERICSERV | AI_PASSIVE; | ||
getaddrinfo(host, port, &hint, &res); | ||
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memcpy(&sa, res->ai_addr, res->ai_addrlen); | ||
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resumption_token->len = 0; | ||
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hs_properties.additional_extensions = NULL; | ||
hs_properties.collect_extension = NULL; | ||
hs_properties.collected_extensions = NULL; | ||
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ret = quicly_connect(&conn, &ctx, host, &sa, NULL, &next_cid, *resumption_token, &hs_properties, &resumed_transport_params); | ||
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ret = quicly_decode_packet(&ctx, &p, Data, Size); | ||
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if (ret != Size) | ||
goto Exit; | ||
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quicly_receive(conn, NULL, &sa, &p); | ||
|
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Exit: | ||
freeaddrinfo(res); | ||
free(resumption_token); | ||
quicly_free(conn); | ||
|
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return 0; | ||
} |
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I do not think we need a pointer (with allocate memory), as the only use of the value in relation to other functions is passing the value of the pointer in
quicly_connect
. This can beptls_iovec_t resumption_token = ptls_iovec_init(NULL, 0)
.