/* snifftest.c * * Copyright (C) 2006-2024 wolfSSL Inc. * * This file is part of wolfSSL. * * wolfSSL is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * wolfSSL is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA */ #ifdef HAVE_CONFIG_H #include #endif #include #include #include #include #include #ifdef WOLFSSL_SNIFFER_STORE_DATA_CB #include #endif #ifdef THREADED_SNIFFTEST #include #endif /* Build Options: * THREADED_SNIFFTEST: Enable threaded version of the sniffer test */ /* For windows tests force sniffer build option on */ #ifdef _WIN32 #define WOLFSSL_SNIFFER #endif #ifndef WOLFSSL_SNIFFER #ifndef NO_MAIN_DRIVER /* blank build */ #include #include int main(void) { printf("do ./configure --enable-sniffer to enable build support\n"); return EXIT_SUCCESS; } #endif /* !NO_MAIN_DRIVER */ #else /* do a full build */ #ifdef _MSC_VER /* builds on *nix too, for scanf device and port */ #define _CRT_SECURE_NO_WARNINGS #endif #include /* pcap stuff */ #include /* printf */ #include /* EXIT_SUCCESS */ #include /* strcmp */ #include /* signal */ #include /* isprint */ #include #ifndef _WIN32 #include /* AF_INET */ #include #include #endif typedef unsigned char byte; enum { ETHER_IF_FRAME_LEN = 14, /* ethernet interface frame length */ NULL_IF_FRAME_LEN = 4, /* no link interface frame length */ }; /* A TLS record can be 16k and change. The chain is broken up into 2K chunks. * This covers the TLS record, plus a chunk for TCP/IP headers. */ #ifndef CHAIN_INPUT_CHUNK_SIZE #define CHAIN_INPUT_CHUNK_SIZE 2048 #elif (CHAIN_INPUT_CHUNK_SIZE < 256) #undef CHAIN_INPUT_CHUNK_SIZE #define CHAIN_INPUT_CHUNK_SIZE 256 #elif (CHAIN_INPUT_CHUNK_SIZE > 16384) #undef CHAIN_INPUT_CHUNK_SIZE #define CHAIN_INPUT_CHUNK_SIZE 16384 #endif #define CHAIN_INPUT_COUNT ((16384 / CHAIN_INPUT_CHUNK_SIZE) + 1) #ifndef STORE_DATA_BLOCK_SZ #define STORE_DATA_BLOCK_SZ 1024 #endif #if defined(HAVE_ECC) && !defined(NO_ECC_SECP) && (!defined(NO_ECC256) || defined(HAVE_ALL_CURVES)) #define DEFAULT_SERVER_EPH_KEY_ECC "../../certs/statickeys/ecc-secp256r1.pem" #else #define DEFAULT_SERVER_EPH_KEY_ECC "" #endif #ifndef NO_DH #define DEFAULT_SERVER_EPH_KEY_DH "../../certs/statickeys/dh-ffdhe2048.pem" #else #define DEFAULT_SERVER_EPH_KEY_DH "" #endif #ifdef HAVE_CURVE25519 #define DEFAULT_SERVER_EPH_KEY_X25519 "../../certs/statickeys/x25519.pem" #else #define DEFAULT_SERVER_EPH_KEY_X25519 "" #endif #ifndef DEFAULT_SERVER_EPH_KEY #define DEFAULT_SERVER_EPH_KEY \ DEFAULT_SERVER_EPH_KEY_ECC "," \ DEFAULT_SERVER_EPH_KEY_DH "," \ DEFAULT_SERVER_EPH_KEY_X25519 #endif #define DEFAULT_SERVER_KEY_RSA "../../certs/server-key.pem" #define DEFAULT_SERVER_KEY_ECC "../../certs/ecc-key.pem" #ifndef DEFAULT_SERVER_KEY #ifndef NO_RSA #define DEFAULT_SERVER_KEY DEFAULT_SERVER_KEY_RSA #elif defined(HAVE_ECC) #define DEFAULT_SERVER_KEY DEFAULT_SERVER_KEY_ECC #endif #endif #define DEFAULT_SERVER_IP "127.0.0.1" #define DEFAULT_SERVER_PORT (443) #ifdef WOLFSSL_SNIFFER_WATCH static const byte rsaHash[] = { 0x3d, 0x4a, 0x60, 0xfc, 0xbf, 0xe5, 0x4d, 0x3e, 0x85, 0x62, 0xf2, 0xfc, 0xdb, 0x0d, 0x51, 0xdd, 0xcd, 0xc2, 0x53, 0x81, 0x1a, 0x67, 0x31, 0xa0, 0x7f, 0xd2, 0x11, 0x74, 0xbf, 0xea, 0xc9, 0xc5 }; static const byte eccHash[] = { 0x9e, 0x45, 0xb6, 0xf8, 0xc6, 0x5d, 0x60, 0x90, 0x40, 0x8f, 0xd2, 0x0e, 0xb1, 0x59, 0xe7, 0xbd, 0xb0, 0x9b, 0x3c, 0x7a, 0x3a, 0xbe, 0x13, 0x52, 0x07, 0x4f, 0x1a, 0x64, 0x45, 0xe0, 0x13, 0x34 }; #endif static pcap_t* pcap = NULL; static pcap_if_t* alldevs = NULL; static struct bpf_program pcap_fp; static void FreeAll(void) { if (pcap) { pcap_freecode(&pcap_fp); pcap_close(pcap); } if (alldevs) pcap_freealldevs(alldevs); #ifndef _WIN32 ssl_FreeSniffer(); #endif } #ifdef WOLFSSL_SNIFFER_STATS static void DumpStats(void) { SSLStats sslStats; ssl_ReadStatistics(&sslStats); printf("SSL Stats (sslStandardConns):%lu\n", sslStats.sslStandardConns); printf("SSL Stats (sslClientAuthConns):%lu\n", sslStats.sslClientAuthConns); printf("SSL Stats (sslResumedConns):%lu\n", sslStats.sslResumedConns); printf("SSL Stats (sslEphemeralMisses):%lu\n", sslStats.sslEphemeralMisses); printf("SSL Stats (sslResumptionInserts):%lu\n", sslStats.sslResumptionInserts); printf("SSL Stats (sslResumeMisses):%lu\n", sslStats.sslResumeMisses); printf("SSL Stats (sslCiphersUnsupported):%lu\n", sslStats.sslCiphersUnsupported); printf("SSL Stats (sslKeysUnmatched):%lu\n", sslStats.sslKeysUnmatched); printf("SSL Stats (sslKeyFails):%lu\n", sslStats.sslKeyFails); printf("SSL Stats (sslDecodeFails):%lu\n", sslStats.sslDecodeFails); printf("SSL Stats (sslAlerts):%lu\n", sslStats.sslAlerts); printf("SSL Stats (sslDecryptedBytes):%lu\n", sslStats.sslDecryptedBytes); printf("SSL Stats (sslEncryptedBytes):%lu\n", sslStats.sslEncryptedBytes); printf("SSL Stats (sslEncryptedPackets):%lu\n", sslStats.sslEncryptedPackets); printf("SSL Stats (sslDecryptedPackets):%lu\n", sslStats.sslDecryptedPackets); printf("SSL Stats (sslKeyMatches):%lu\n", sslStats.sslKeyMatches); printf("SSL Stats (sslEncryptedConns):%lu\n", sslStats.sslEncryptedConns); } #endif /* WOLFSSL_SNIFFER_STATS */ static void sig_handler(const int sig) { printf("SIGINT handled = %d.\n", sig); FreeAll(); #ifdef WOLFSSL_SNIFFER_STATS DumpStats(); #endif if (sig) exit(EXIT_SUCCESS); } static void err_sys(const char* msg) { fprintf(stderr, "%s\n", msg); if (msg) exit(EXIT_FAILURE); } #ifdef _WIN32 #define SNPRINTF _snprintf #else #define SNPRINTF snprintf #endif static char* iptos(const struct in_addr* addr) { static char output[32]; byte *p = (byte*)&addr->s_addr; snprintf(output, sizeof(output), "%d.%d.%d.%d", p[0], p[1], p[2], p[3]); return output; } static const char* ip6tos(const struct in6_addr* addr) { static char output[42]; return inet_ntop(AF_INET6, addr, output, 42); } #if defined(WOLFSSL_SNIFFER_STORE_DATA_CB) || defined(WOLFSSL_SNIFFER_CHAIN_INPUT) static inline unsigned int min(unsigned int a, unsigned int b) { return a > b ? b : a; } #endif #ifdef WOLFSSL_SNIFFER_WATCH static int myWatchCb(void* vSniffer, const unsigned char* certHash, unsigned int certHashSz, const unsigned char* certChain, unsigned int certChainSz, void* ctx, char* error) { const char* certName = NULL; (void)certChain; (void)certChainSz; (void)ctx; if (certHashSz == sizeof(rsaHash) && XMEMCMP(certHash, rsaHash, certHashSz) == 0) { certName = DEFAULT_SERVER_KEY_RSA; } if (certHashSz == sizeof(eccHash) && XMEMCMP(certHash, eccHash, certHashSz) == 0) { certName = DEFAULT_SERVER_KEY_ECC; } if (certName == NULL) { /* don't return error if key is not loaded */ printf("Warning: No matching key found for cert hash\n"); return 0; } return ssl_SetWatchKey_file(vSniffer, certName, FILETYPE_PEM, NULL, error); } #endif /* WOLFSSL_SNIFFER_WATCH */ #ifdef WOLFSSL_SNIFFER_STORE_DATA_CB static int myStoreDataCb(const unsigned char* decryptBuf, unsigned int decryptBufSz, unsigned int decryptBufOffset, void* ctx) { byte** data = (byte**)ctx; unsigned int qty; if (data == NULL) return -1; if (decryptBufSz < decryptBufOffset) return -1; qty = min(decryptBufSz - decryptBufOffset, STORE_DATA_BLOCK_SZ); if (*data == NULL) { byte* tmpData; tmpData = (byte*)XREALLOC(*data, decryptBufSz + 1, NULL, DYNAMIC_TYPE_TMP_BUFFER); if (tmpData == NULL) { XFREE(*data, NULL, DYNAMIC_TYPE_TMP_BUFFER); *data = NULL; return -1; } *data = tmpData; } XMEMCPY(*data + decryptBufOffset, decryptBuf + decryptBufOffset, qty); return qty; } #endif /* WOLFSSL_SNIFFER_STORE_DATA_CB */ /* try and load as both static ephemeral and private key */ /* only fail if no key is loaded */ /* Allow comma separated list of files */ static int load_key(const char* name, const char* server, int port, const char* keyFiles, const char* passwd, char* err) { int ret = -1; int loadCount = 0; char *keyFile, *ptr = NULL; keyFile = XSTRTOK((char*)keyFiles, ",", &ptr); while (keyFile != NULL) { #ifdef WOLFSSL_STATIC_EPHEMERAL #ifdef HAVE_SNI ret = ssl_SetNamedEphemeralKey(name, server, port, keyFile, FILETYPE_PEM, passwd, err); #else ret = ssl_SetEphemeralKey(server, port, keyFile, FILETYPE_PEM, passwd, err); #endif if (ret == 0) loadCount++; #endif #ifdef HAVE_SNI ret = ssl_SetNamedPrivateKey(name, server, port, keyFile, FILETYPE_PEM, passwd, err); #else ret = ssl_SetPrivateKey(server, port, keyFile, FILETYPE_PEM, passwd, err); #endif if (ret == 0) loadCount++; if (loadCount == 0) { printf("Failed loading private key %s: ret %d\n", keyFile, ret); printf("Please run directly from wolfSSL root dir\n"); ret = -1; } else { ret = 0; } keyFile = XSTRTOK(NULL, ",", &ptr); } (void)name; return ret; } static void TrimNewLine(char* str) { word32 strSz = 0; if (str) strSz = (word32)XSTRLEN(str); if (strSz > 0 && (str[strSz-1] == '\n' || str[strSz-1] == '\r')) str[strSz-1] = '\0'; } static void show_appinfo(void) { printf("snifftest %s\n", LIBWOLFSSL_VERSION_STRING); /* list enabled sniffer features */ printf("sniffer features: " #ifdef WOLFSSL_SNIFFER_STATS "stats, " #endif #ifdef WOLFSSL_SNIFFER_WATCH "watch, " #endif #ifdef WOLFSSL_SNIFFER_STORE_DATA_CB "store_data_cb " #endif #ifdef WOLFSSL_SNIFFER_CHAIN_INPUT "chain_input " #endif #ifdef WOLFSSL_SNIFFER_KEY_CALLBACK "key_callback " #endif #ifdef DEBUG_SNIFFER "debug " #endif #ifdef WOLFSSL_TLS13 "tls_v13 " #endif #ifndef WOLFSSL_NO_TLS12 "tls_v12 " #endif #ifdef HAVE_SESSION_TICKET "session_ticket " #endif #ifdef WOLFSSL_STATIC_EPHEMERAL "static_ephemeral " #endif #ifdef WOLFSSL_ENCRYPTED_KEYS "encrypted_keys " #endif #ifdef HAVE_SNI "sni " #endif #ifdef HAVE_EXTENDED_MASTER "extended_master " #endif #ifdef HAVE_MAX_FRAGMENT "max fragment " #endif #ifdef WOLFSSL_ASYNC_CRYPT "async_crypt " #endif #ifndef NO_RSA "rsa " #endif #if !defined(NO_DH) && defined(WOLFSSL_DH_EXTRA) "dh " #endif #ifdef HAVE_ECC "ecc " #endif #ifdef HAVE_CURVE448 "x448 " #endif #ifdef HAVE_CURVE22519 "x22519 " #endif #ifdef WOLFSSL_STATIC_RSA "rsa_static " #endif #ifdef WOLFSSL_STATIC_DH "dh_static " #endif #ifdef WOLFSSL_SNIFFER_KEYLOGFILE "ssl_keylog_file " #endif /* WOLFSSL_SNIFFER_KEYLOGFILE */ "\n\n" ); } typedef struct SnifferPacket { byte* packet; int length; int lastRet; int packetNumber; #ifdef THREADED_SNIFFTEST struct SnifferPacket* next; struct SnifferPacket* prev; int placeholder; #endif } SnifferPacket; #ifdef WOLFSSL_ASYNC_CRYPT static THREAD_LS_T SnifferPacket asyncQueue[WOLF_ASYNC_MAX_PENDING]; /* returns index to queue */ static int SnifferAsyncQueueAdd(int lastRet, void* chain, int chainSz, int isChain, int packetNumber) { int ret, i, length; byte* packet; #ifdef WOLFSSL_SNIFFER_CHAIN_INPUT if (isChain) { struct iovec* vchain = (struct iovec*)chain; length = 0; for (i = 0; i < chainSz; i++) length += vchain[i].iov_len; packet = (byte*)vchain[0].iov_base; } else #endif { packet = (byte*)chain; length = chainSz; } /* find first free idx */ ret = MEMORY_E; for (i=0; ilockCount = 0; pthread_mutex_init(&s->mutex, NULL); pthread_cond_init(&s->cond, NULL); return 0; } static int wm_SemFree(wm_Sem *s) { pthread_mutex_destroy(&s->mutex); pthread_cond_destroy(&s->cond); return 0; } static int wm_SemLock(wm_Sem *s) { pthread_mutex_lock(&s->mutex); while (s->lockCount > 0) pthread_cond_wait(&s->cond, &s->mutex); s->lockCount++; pthread_mutex_unlock(&s->mutex); return 0; } static int wm_SemUnlock(wm_Sem *s) { pthread_mutex_lock(&s->mutex); s->lockCount--; pthread_cond_signal(&s->cond); pthread_mutex_unlock(&s->mutex); return 0; } typedef struct SnifferWorker { SnifferPacket *head; /* head for doubly-linked list of sniffer packets */ SnifferPacket *tail; /* tail for doubly-linked list of sniffer packets */ wm_Sem sem; pthread_t tid; char *server; char *keyFilesSrc; char *passwd; int port; int hadBadPacket; /* track if sniffer worker saw bad packet */ int unused; int id; int shutdown; } SnifferWorker; static int ssl_Init_SnifferWorker(SnifferWorker* worker, int port, const char* server, const char* keyFilesSrc, const char* passwd, int id) { wm_SemInit(&worker->sem); worker->server = (char*)server; worker->keyFilesSrc = (char*)keyFilesSrc; worker->passwd = (char*)passwd; worker->port = port; worker->unused = 0; worker->shutdown = 0; worker ->id = id; worker->head = (SnifferPacket*)XMALLOC(sizeof(SnifferPacket), NULL, DYNAMIC_TYPE_TMP_BUFFER); if (worker->head == NULL) { return MEMORY_E; } XMEMSET(worker->head, 0, sizeof(SnifferPacket)); worker->tail = worker->head; worker->head->packet = NULL; worker->head->next = NULL; worker->head->prev = NULL; worker->head->placeholder = 1; return 0; } static void ssl_Free_SnifferWorker(SnifferWorker* worker) { wm_SemFree(&worker->sem); if (worker->head) { XFREE(worker->head, NULL, DYNAMIC_TYPE_TMP_BUFFER); worker->head = NULL; } } static int SnifferWorkerPacketAdd(SnifferWorker* worker, int lastRet, byte* packet, int length, int packetNumber) { SnifferPacket* newEntry; newEntry = (SnifferPacket*)XMALLOC(sizeof(SnifferPacket), NULL, DYNAMIC_TYPE_TMP_BUFFER); if (newEntry == NULL) { return MEMORY_E; } XMEMSET(newEntry, 0, sizeof(SnifferPacket)); newEntry->packet = (byte*)XMALLOC(length, NULL, DYNAMIC_TYPE_TMP_BUFFER); if (newEntry->packet == NULL) { XFREE(newEntry, NULL, DYNAMIC_TYPE_TMP_BUFFER); return MEMORY_E; } /* Set newEntry fields to input values */ XMEMCPY(newEntry->packet, packet, length); newEntry->length = length; newEntry->lastRet = lastRet; newEntry->packetNumber = packetNumber; newEntry->placeholder = 0; /* Create worker head if null */ if (worker->head == NULL) { worker->head = (SnifferPacket*)XMALLOC(sizeof(SnifferPacket), NULL, DYNAMIC_TYPE_TMP_BUFFER); XMEMSET(worker->head, 0, sizeof(SnifferPacket)); worker->tail = worker->head; worker->head->packet = NULL; worker->head->next = NULL; worker->head->prev = NULL; worker->head->placeholder = 1; } if (worker->head->placeholder) { /* First packet added to be to SnifferWorker linked list, * set head and tail to the new packet */ XFREE(worker->head, NULL, DYNAMIC_TYPE_TMP_BUFFER); newEntry->next = NULL; newEntry->prev = NULL; worker->head = newEntry; worker->tail = newEntry; } else { /* Add packet to SnifferWorker linked list and move tail */ newEntry->prev = worker->tail; newEntry->next = NULL; worker->tail->next = newEntry; worker->tail = newEntry; } return 0; } #endif /* THREADED_SNIFFTEST */ static int DecodePacket(byte* packet, int length, int packetNumber, char err[]) { int ret, j; int hadBadPacket = 0; int isChain = 0; int chainSz; void* chain; byte* data = NULL; /* pointer to decrypted data */ SSLInfo sslInfo; #ifdef WOLFSSL_SNIFFER_CHAIN_INPUT struct iovec chains[CHAIN_INPUT_COUNT]; unsigned int remainder; j = 0; chainSz = 0; isChain = 1; remainder = length; do { unsigned int chunkSz = min(remainder, CHAIN_INPUT_CHUNK_SIZE); chains[chainSz].iov_base = (void*)(packet + j); chains[chainSz].iov_len = chunkSz; j += chunkSz; remainder -= chunkSz; chainSz++; } while (j < (int)length); chain = (void*)chains; #else chain = (void*)packet; chainSz = length; #endif #if defined(DEBUG_SNIFFER) printf("Packet Number: %d\n", packetNumber); #endif /* decode packet */ #ifdef WOLFSSL_ASYNC_CRYPT /* For async call the original API again with same data, * or call with different sessions for multiple concurrent * stream processing */ ret = ssl_DecodePacketAsync(chain, chainSz, isChain, &data, err, &sslInfo, NULL); /* WC_PENDING_E: Hardware is processing or stream is blocked * (waiting on WC_PENDING_E) */ if (ret == WC_PENDING_E) { /* add to queue, for later processing */ #ifdef DEBUG_SNIFFER printf("Steam is pending, queue packet %d\n", packetNumber); #endif ret = SnifferAsyncQueueAdd(ret, chain, chainSz, isChain, packetNumber); if (ret >= 0) { ret = 0; /* mark event just added */ } } #elif defined(WOLFSSL_SNIFFER_CHAIN_INPUT) && \ defined(WOLFSSL_SNIFFER_STORE_DATA_CB) ret = ssl_DecodePacketWithChainSessionInfoStoreData(chain, chainSz, &data, &sslInfo, err); #elif defined(WOLFSSL_SNIFFER_CHAIN_INPUT) (void)sslInfo; ret = ssl_DecodePacketWithChain(chain, chainSz, &data, err); #elif defined(WOLFSSL_SNIFFER_STORE_DATA_CB) ret = ssl_DecodePacketWithSessionInfoStoreData(packet, length, &data, &sslInfo, err); #else ret = ssl_DecodePacketWithSessionInfo(packet, length, &data, &sslInfo, err); #endif if (ret < 0) { printf("ssl_Decode ret = %d, %s on packet number %d\n", ret, err, packetNumber); hadBadPacket = 1; } if (data != NULL && ret > 0) { /* Convert non-printable data to periods. */ for (j = 0; j < ret; j++) { if (isprint(data[j]) || isspace(data[j])) continue; data[j] = '.'; } data[ret] = 0; printf("SSL App Data(%d:%d):%s\n", packetNumber, ret, data); ssl_FreeZeroDecodeBuffer(&data, ret, err); } (void)isChain; (void)chain; (void)chainSz; return hadBadPacket; } #ifdef THREADED_SNIFFTEST static void* snifferWorker(void* arg) { SnifferWorker* worker = (SnifferWorker*)arg; char err[PCAP_ERRBUF_SIZE]; ssl_InitSniffer_ex2(worker->id); ssl_Trace("./tracefile.txt", err); ssl_EnableRecovery(1, -1, err); #ifdef WOLFSSL_SNIFFER_WATCH ssl_SetWatchKeyCallback(myWatchCb, err); #endif #ifdef WOLFSSL_SNIFFER_STORE_DATA_CB ssl_SetStoreDataCallback(myStoreDataCb); #endif load_key(NULL, worker->server, worker->port, worker->keyFilesSrc, worker->passwd, err); /* continue processing the workers packets and keep expecting them * until the shutdown flag is set */ while (!worker->shutdown) { while (worker->head) { int ret = 0; byte* packet; int length; int packetNumber; #ifdef WOLFSSL_ASYNC_CRYPT SSLInfo sslInfo; byte* data; int queueSz = 0; /* poll hardware and attempt to process items in queue. If * returns > 0 then data pointer has decrypted something */ SnifferAsyncPollQueue(&data, err, &sslInfo, &queueSz); if (queueSz >= WOLF_ASYNC_MAX_PENDING) { /* queue full, poll again */ continue; } #endif /* Shutdown worker if it was not utilized */ if (worker->unused) { XFREE(worker->head, NULL, DYNAMIC_TYPE_TMP_BUFFER); worker->head = NULL; break; } /* get lock */ wm_SemLock(&worker->sem); /* get packet for current worker head */ packet = worker->head->packet; length = worker->head->length; packetNumber = worker->head->packetNumber; wm_SemUnlock(&worker->sem); if (packet == NULL) { continue; } /* Decode Packet, ret value will indicate whether a * bad packet was encountered */ ret = DecodePacket(packet, length, packetNumber, err); if (ret) { worker->hadBadPacket = 1; } /* get lock */ wm_SemLock(&worker->sem); XFREE(worker->head->packet, NULL, DYNAMIC_TYPE_TMP_BUFFER); worker->head->packet = NULL; if (worker->head->next) { /* Move head and free */ worker->head = worker->head->next; XFREE(worker->head->prev, NULL, DYNAMIC_TYPE_TMP_BUFFER); worker->head->prev = NULL; } else { /* No other packets in list. Keep looping until more packets * arrive or worker is shutdown. */ XFREE(worker->head, NULL, DYNAMIC_TYPE_TMP_BUFFER); worker->head = NULL; } wm_SemUnlock(&worker->sem); } /* while (worker->head) */ if (worker->unused) { break; } } /* while (worker->head) */ /* Thread cleanup */ ssl_FreeSniffer(); #if defined(HAVE_ECC) && defined(FP_ECC) wc_ecc_fp_free(); #endif return NULL; } #endif /* THREADED_SNIFFTEST */ int main(int argc, char** argv) { int ret = 0; int hadBadPacket = 0; int inum = 0; int saveFile = 0; int i = 0, defDev = 0; int packetNumber = 0; int frame = ETHER_IF_FRAME_LEN; char err[PCAP_ERRBUF_SIZE]; char filter[32]; const char *keyFilesSrc = NULL; #ifdef WOLFSSL_SNIFFER_KEYLOGFILE const char *sslKeyLogFile = NULL; #endif /* WOLFSSL_SNIFFER_KEYLOGFILE */ char keyFilesBuf[MAX_FILENAME_SZ]; char keyFilesUser[MAX_FILENAME_SZ]; const char *server = DEFAULT_SERVER_IP; int port = DEFAULT_SERVER_PORT; const char *sniName = NULL; const char *passwd = NULL; pcap_if_t *d; pcap_addr_t *a; #ifdef THREADED_SNIFFTEST int workerThreadCount; #ifdef HAVE_SESSION_TICKET /* Multiple threads on resume not yet supported */ workerThreadCount = 1; #else workerThreadCount = 5; #endif #endif show_appinfo(); signal(SIGINT, sig_handler); #ifndef THREADED_SNIFFTEST #ifndef _WIN32 ssl_InitSniffer(); /* dll load on Windows */ #endif ssl_Trace("./tracefile.txt", err); ssl_EnableRecovery(1, -1, err); #ifdef WOLFSSL_SNIFFER_WATCH ssl_SetWatchKeyCallback(myWatchCb, err); #endif #ifdef WOLFSSL_SNIFFER_STORE_DATA_CB ssl_SetStoreDataCallback(myStoreDataCb); #endif #endif if (argc == 1) { char cmdLineArg[128]; /* normal case, user chooses device and port */ if (pcap_findalldevs(&alldevs, err) == -1) err_sys("Error in pcap_findalldevs"); for (d = alldevs; d; d=d->next) { printf("%d. %s", ++i, d->name); if (strcmp(d->name, "lo0") == 0) { defDev = i; } if (d->description) printf(" (%s)\n", d->description); else printf(" (No description available)\n"); } if (i == 0) err_sys("No interfaces found! Make sure pcap or WinPcap is" " installed correctly and you have sufficient permissions"); printf("Enter the interface number (1-%d) [default: %d]: ", i, defDev); XMEMSET(cmdLineArg, 0, sizeof(cmdLineArg)); if (XFGETS(cmdLineArg, sizeof(cmdLineArg), stdin)) inum = XATOI(cmdLineArg); if (inum == 0) inum = defDev; else if (inum < 1 || inum > i) err_sys("Interface number out of range"); /* Jump to the selected adapter */ for (d = alldevs, i = 0; i < inum - 1; d = d->next, i++); pcap = pcap_create(d->name, err); if (pcap == NULL) printf("pcap_create failed %s\n", err); /* print out addresses for selected interface */ for (a = d->addresses; a; a = a->next) { if (a->addr->sa_family == AF_INET) { server = iptos(&((struct sockaddr_in *)a->addr)->sin_addr); printf("server = %s\n", server); } else if (a->addr->sa_family == AF_INET6) { server = ip6tos(&((struct sockaddr_in6 *)a->addr)->sin6_addr); printf("server = %s\n", server); } } if (server == NULL) err_sys("Unable to get device IPv4 or IPv6 address"); ret = pcap_set_snaplen(pcap, 65536); if (ret != 0) printf("pcap_set_snaplen failed %s\n", pcap_geterr(pcap)); ret = pcap_set_timeout(pcap, 1000); if (ret != 0) printf("pcap_set_timeout failed %s\n", pcap_geterr(pcap)); ret = pcap_set_buffer_size(pcap, 1000000); if (ret != 0) printf("pcap_set_buffer_size failed %s\n", pcap_geterr(pcap)); ret = pcap_set_promisc(pcap, 1); if (ret != 0) printf("pcap_set_promisc failed %s\n", pcap_geterr(pcap)); ret = pcap_activate(pcap); if (ret != 0) printf("pcap_activate failed %s\n", pcap_geterr(pcap)); printf("Enter the port to scan [default: 11111]: "); XMEMSET(cmdLineArg, 0, sizeof(cmdLineArg)); if (XFGETS(cmdLineArg, sizeof(cmdLineArg), stdin)) { port = XATOI(cmdLineArg); } if (port <= 0) port = 11111; SNPRINTF(filter, sizeof(filter), "tcp and port %d", port); ret = pcap_compile(pcap, &pcap_fp, filter, 0, 0); if (ret != 0) printf("pcap_compile failed %s\n", pcap_geterr(pcap)); ret = pcap_setfilter(pcap, &pcap_fp); if (ret != 0) printf("pcap_setfilter failed %s\n", pcap_geterr(pcap)); /* optionally enter the private key to use */ #if defined(WOLFSSL_STATIC_EPHEMERAL) && defined(DEFAULT_SERVER_EPH_KEY) keyFilesSrc = DEFAULT_SERVER_EPH_KEY; #else keyFilesSrc = DEFAULT_SERVER_KEY; #endif printf("Enter the server key [default: %s]: ", keyFilesSrc); XMEMSET(keyFilesBuf, 0, sizeof(keyFilesBuf)); XMEMSET(keyFilesUser, 0, sizeof(keyFilesUser)); if (XFGETS(keyFilesUser, sizeof(keyFilesUser), stdin)) { TrimNewLine(keyFilesUser); if (XSTRLEN(keyFilesUser) > 0) { keyFilesSrc = keyFilesUser; } } XSTRNCPY(keyFilesBuf, keyFilesSrc, sizeof(keyFilesBuf)); /* optionally enter a named key (SNI) */ #if !defined(WOLFSSL_SNIFFER_WATCH) && defined(HAVE_SNI) printf("Enter alternate SNI [default: none]: "); XMEMSET(cmdLineArg, 0, sizeof(cmdLineArg)); if (XFGETS(cmdLineArg, sizeof(cmdLineArg), stdin)) { TrimNewLine(cmdLineArg); if (XSTRLEN(cmdLineArg) > 0) { sniName = cmdLineArg; } } #endif /* !WOLFSSL_SNIFFER_WATCH && HAVE_SNI */ /* get IPv4 or IPv6 addresses for selected interface */ for (a = d->addresses; a; a = a->next) { server = NULL; if (a->addr->sa_family == AF_INET) { server = iptos(&((struct sockaddr_in *)a->addr)->sin_addr); } else if (a->addr->sa_family == AF_INET6) { server = ip6tos(&((struct sockaddr_in6 *)a->addr)->sin6_addr); } if (server) { XSTRNCPY(keyFilesBuf, keyFilesSrc, sizeof(keyFilesBuf)); ret = load_key(sniName, server, port, keyFilesBuf, NULL, err); if (ret != 0) { exit(EXIT_FAILURE); } } } } else { char *pcapFile = NULL; for (i = 1; i < argc; i++) { if (strcmp(argv[i], "-pcap") == 0 && i + 1 < argc) { pcapFile = argv[++i]; } else if (strcmp(argv[i], "-key") == 0 && i + 1 < argc) { keyFilesSrc = argv[++i]; } else if (strcmp(argv[i], "-server") == 0 && i + 1 < argc) { server = argv[++i]; } else if (strcmp(argv[i], "-port") == 0 && i + 1 < argc) { port = XATOI(argv[++i]); } else if (strcmp(argv[i], "-password") == 0 && i + 1 < argc) { passwd = argv[++i]; } #if defined(WOLFSSL_SNIFFER_KEYLOGFILE) else if (strcmp(argv[i], "-keylogfile") == 0 && i + 1 < argc) { sslKeyLogFile = argv[++i]; } #endif /* WOLFSSL_SNIFFER_KEYLOGFILE */ #if defined(THREADED_SNIFFTEST) else if (strcmp(argv[i], "-threads") == 0 && i + 1 < argc) { workerThreadCount = XATOI(argv[++i]); } #endif /* THREADED_SNIFFTEST */ else { fprintf(stderr, "Invalid option or missing argument: %s\n", argv[i]); fprintf(stderr, "Usage: %s -pcap pcap_arg -key key_arg" " [-password password_arg] [-server server_arg] [-port port_arg]" #if defined(WOLFSSL_SNIFFER_KEYLOGFILE) " [-keylogfile keylogfile_arg]" #endif /* WOLFSSL_SNIFFER_KEYLOGFILE */ #if defined(THREADED_SNIFFTEST) " [-threads threads_arg]" #endif /* THREADED_SNIFFTEST */ "\n", argv[0]); exit(EXIT_FAILURE); } } if (!pcapFile) { fprintf(stderr, "Error: -pcap option is required.\n"); exit(EXIT_FAILURE); } #if defined(WOLFSSL_SNIFFER_KEYLOGFILE) /* If we offer keylog support, then user must provide EITHER a pubkey * OR a keylog file but NOT both */ if ((!keyFilesSrc && !sslKeyLogFile) || (keyFilesSrc && sslKeyLogFile)) { fprintf(stderr, "Error: either -key OR -keylogfile option required but NOT both.\n"); exit(EXIT_FAILURE); } #else if (!keyFilesSrc) { fprintf(stderr, "Error: -key option is required.\n"); exit(EXIT_FAILURE); } #endif saveFile = 1; pcap = pcap_open_offline(pcapFile , err); if (pcap == NULL) { fprintf(stderr, "pcap_open_offline failed %s\n", err); err_sys(err); } else { #if defined(WOLFSSL_SNIFFER_KEYLOGFILE) if (sslKeyLogFile != NULL) { ret = ssl_LoadSecretsFromKeyLogFile(sslKeyLogFile, err); if (ret != 0) { fprintf(stderr, "ERROR=%d, unable to load secrets from keylog file\n",ret); err_sys(err); } ret = ssl_CreateKeyLogSnifferServer(server, port, err); if (ret != 0) { fprintf(stderr, "ERROR=%d, unable to create keylog sniffer server\n",ret); err_sys(err); } } else #endif /* WOLFSSL_SNIFFER_KEYLOGFILE */ { ret = load_key(NULL, server, port, keyFilesSrc, passwd, err); if (ret != 0) { fprintf(stderr, "Failed to load key\n"); err_sys(err); } } /* Only let through TCP/IP packets */ ret = pcap_compile(pcap, &pcap_fp, "(ip6 or ip) and tcp", 0, 0); if (ret != 0) { fprintf(stderr, "pcap_compile failed %s\n", pcap_geterr(pcap)); exit(EXIT_FAILURE); } ret = pcap_setfilter(pcap, &pcap_fp); if (ret != 0) { fprintf(stderr, "pcap_setfilter failed %s\n", pcap_geterr(pcap)); exit(EXIT_FAILURE); } } } if (ret != 0) err_sys(err); if (pcap_datalink(pcap) == DLT_NULL) frame = NULL_IF_FRAME_LEN; #ifdef THREADED_SNIFFTEST SnifferWorker workers[workerThreadCount]; int used[workerThreadCount]; XMEMSET(used, 0, sizeof(used)); XMEMSET(&workers, 0, sizeof(workers)); for (i=0; i 0 * then data pointer has decrypted something */ SnifferAsyncPollQueue(&data, err, &sslInfo, &queueSz); if (queueSz >= WOLF_ASYNC_MAX_PENDING) { /* queue full, poll again */ continue; } #endif ret = 0; /* reset status */ if (data == NULL) { /* grab next pcap packet */ packetNumber++; packet = pcap_next(pcap, &header); } if (packet) { if (header.caplen > 40) { /* min ip(20) + min tcp(20) */ packet += frame; header.caplen -= frame; } else { /* packet doesn't contain minimum ip/tcp header */ continue; } #ifdef THREADED_SNIFFTEST XMEMSET(&info, 0, sizeof(SnifferStreamInfo)); ret = ssl_DecodePacket_GetStream(&info, packet, header.caplen, err); /* calculate SnifferStreamInfo checksum */ infoSum = 0; infoPtr = (uint8_t*)&info; for (i=0; i<(int)sizeof(SnifferStreamInfo); i++) { infoSum += infoPtr[i]; } /* determine thread to handle stream */ threadNum = infoSum % workerThreadCount; used[threadNum] = 1; #ifdef DEBUG_SNIFFER printf("Sending packet %d to thread number %d\n", packetNumber, threadNum); #endif /* get lock on thread mutex */ wm_SemLock(&workers[threadNum].sem); /* add the packet to the worker's linked list */ if (SnifferWorkerPacketAdd(&workers[threadNum], ret, (byte*)packet, header.caplen, packetNumber)) { printf("Unable to add packet %d to worker", packetNumber); break; } wm_SemUnlock(&workers[threadNum].sem); #else /* Decode Packet, ret value will indicate whether a * bad packet was encountered */ hadBadPacket = DecodePacket((byte*)packet, header.caplen, packetNumber,err); #endif } /* check if we are done reading file */ if (packet == NULL && data == NULL && saveFile) { #ifdef WOLFSSL_ASYNC_CRYPT /* if items pending still then keep processing */ if (queueSz > 0) continue; #endif break; } } #ifdef THREADED_SNIFFTEST for (i=0; i