/* * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the Apache License 2.0 (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include #include "internal/nelem.h" #include "internal/cryptlib.h" /* for ossl_sleep() */ #include "ssltestlib.h" #include "testutil.h" #include "e_os.h" #ifdef OPENSSL_SYS_UNIX # include # ifndef OPENSSL_NO_KTLS # include # include # include # include # include # include # endif #endif static int tls_dump_new(BIO *bi); static int tls_dump_free(BIO *a); static int tls_dump_read(BIO *b, char *out, int outl); static int tls_dump_write(BIO *b, const char *in, int inl); static long tls_dump_ctrl(BIO *b, int cmd, long num, void *ptr); static int tls_dump_gets(BIO *bp, char *buf, int size); static int tls_dump_puts(BIO *bp, const char *str); /* Choose a sufficiently large type likely to be unused for this custom BIO */ #define BIO_TYPE_TLS_DUMP_FILTER (0x80 | BIO_TYPE_FILTER) #define BIO_TYPE_MEMPACKET_TEST 0x81 #define BIO_TYPE_ALWAYS_RETRY 0x82 static BIO_METHOD *method_tls_dump = NULL; static BIO_METHOD *meth_mem = NULL; static BIO_METHOD *meth_always_retry = NULL; /* Note: Not thread safe! */ const BIO_METHOD *bio_f_tls_dump_filter(void) { if (method_tls_dump == NULL) { method_tls_dump = BIO_meth_new(BIO_TYPE_TLS_DUMP_FILTER, "TLS dump filter"); if ( method_tls_dump == NULL || !BIO_meth_set_write(method_tls_dump, tls_dump_write) || !BIO_meth_set_read(method_tls_dump, tls_dump_read) || !BIO_meth_set_puts(method_tls_dump, tls_dump_puts) || !BIO_meth_set_gets(method_tls_dump, tls_dump_gets) || !BIO_meth_set_ctrl(method_tls_dump, tls_dump_ctrl) || !BIO_meth_set_create(method_tls_dump, tls_dump_new) || !BIO_meth_set_destroy(method_tls_dump, tls_dump_free)) return NULL; } return method_tls_dump; } void bio_f_tls_dump_filter_free(void) { BIO_meth_free(method_tls_dump); } static int tls_dump_new(BIO *bio) { BIO_set_init(bio, 1); return 1; } static int tls_dump_free(BIO *bio) { BIO_set_init(bio, 0); return 1; } static void copy_flags(BIO *bio) { int flags; BIO *next = BIO_next(bio); flags = BIO_test_flags(next, BIO_FLAGS_SHOULD_RETRY | BIO_FLAGS_RWS); BIO_clear_flags(bio, BIO_FLAGS_SHOULD_RETRY | BIO_FLAGS_RWS); BIO_set_flags(bio, flags); } #define RECORD_CONTENT_TYPE 0 #define RECORD_VERSION_HI 1 #define RECORD_VERSION_LO 2 #define RECORD_EPOCH_HI 3 #define RECORD_EPOCH_LO 4 #define RECORD_SEQUENCE_START 5 #define RECORD_SEQUENCE_END 10 #define RECORD_LEN_HI 11 #define RECORD_LEN_LO 12 #define MSG_TYPE 0 #define MSG_LEN_HI 1 #define MSG_LEN_MID 2 #define MSG_LEN_LO 3 #define MSG_SEQ_HI 4 #define MSG_SEQ_LO 5 #define MSG_FRAG_OFF_HI 6 #define MSG_FRAG_OFF_MID 7 #define MSG_FRAG_OFF_LO 8 #define MSG_FRAG_LEN_HI 9 #define MSG_FRAG_LEN_MID 10 #define MSG_FRAG_LEN_LO 11 static void dump_data(const char *data, int len) { int rem, i, content, reclen, msglen, fragoff, fraglen, epoch; unsigned char *rec; printf("---- START OF PACKET ----\n"); rem = len; rec = (unsigned char *)data; while (rem > 0) { if (rem != len) printf("*\n"); printf("*---- START OF RECORD ----\n"); if (rem < DTLS1_RT_HEADER_LENGTH) { printf("*---- RECORD TRUNCATED ----\n"); break; } content = rec[RECORD_CONTENT_TYPE]; printf("** Record Content-type: %d\n", content); printf("** Record Version: %02x%02x\n", rec[RECORD_VERSION_HI], rec[RECORD_VERSION_LO]); epoch = (rec[RECORD_EPOCH_HI] << 8) | rec[RECORD_EPOCH_LO]; printf("** Record Epoch: %d\n", epoch); printf("** Record Sequence: "); for (i = RECORD_SEQUENCE_START; i <= RECORD_SEQUENCE_END; i++) printf("%02x", rec[i]); reclen = (rec[RECORD_LEN_HI] << 8) | rec[RECORD_LEN_LO]; printf("\n** Record Length: %d\n", reclen); /* Now look at message */ rec += DTLS1_RT_HEADER_LENGTH; rem -= DTLS1_RT_HEADER_LENGTH; if (content == SSL3_RT_HANDSHAKE) { printf("**---- START OF HANDSHAKE MESSAGE FRAGMENT ----\n"); if (epoch > 0) { printf("**---- HANDSHAKE MESSAGE FRAGMENT ENCRYPTED ----\n"); } else if (rem < DTLS1_HM_HEADER_LENGTH || reclen < DTLS1_HM_HEADER_LENGTH) { printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n"); } else { printf("*** Message Type: %d\n", rec[MSG_TYPE]); msglen = (rec[MSG_LEN_HI] << 16) | (rec[MSG_LEN_MID] << 8) | rec[MSG_LEN_LO]; printf("*** Message Length: %d\n", msglen); printf("*** Message sequence: %d\n", (rec[MSG_SEQ_HI] << 8) | rec[MSG_SEQ_LO]); fragoff = (rec[MSG_FRAG_OFF_HI] << 16) | (rec[MSG_FRAG_OFF_MID] << 8) | rec[MSG_FRAG_OFF_LO]; printf("*** Message Fragment offset: %d\n", fragoff); fraglen = (rec[MSG_FRAG_LEN_HI] << 16) | (rec[MSG_FRAG_LEN_MID] << 8) | rec[MSG_FRAG_LEN_LO]; printf("*** Message Fragment len: %d\n", fraglen); if (fragoff + fraglen > msglen) printf("***---- HANDSHAKE MESSAGE FRAGMENT INVALID ----\n"); else if (reclen < fraglen) printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n"); else printf("**---- END OF HANDSHAKE MESSAGE FRAGMENT ----\n"); } } if (rem < reclen) { printf("*---- RECORD TRUNCATED ----\n"); rem = 0; } else { rec += reclen; rem -= reclen; printf("*---- END OF RECORD ----\n"); } } printf("---- END OF PACKET ----\n\n"); fflush(stdout); } static int tls_dump_read(BIO *bio, char *out, int outl) { int ret; BIO *next = BIO_next(bio); ret = BIO_read(next, out, outl); copy_flags(bio); if (ret > 0) { dump_data(out, ret); } return ret; } static int tls_dump_write(BIO *bio, const char *in, int inl) { int ret; BIO *next = BIO_next(bio); ret = BIO_write(next, in, inl); copy_flags(bio); return ret; } static long tls_dump_ctrl(BIO *bio, int cmd, long num, void *ptr) { long ret; BIO *next = BIO_next(bio); if (next == NULL) return 0; switch (cmd) { case BIO_CTRL_DUP: ret = 0L; break; default: ret = BIO_ctrl(next, cmd, num, ptr); break; } return ret; } static int tls_dump_gets(BIO *bio, char *buf, int size) { /* We don't support this - not needed anyway */ return -1; } static int tls_dump_puts(BIO *bio, const char *str) { return tls_dump_write(bio, str, strlen(str)); } struct mempacket_st { unsigned char *data; int len; unsigned int num; unsigned int type; }; static void mempacket_free(MEMPACKET *pkt) { if (pkt->data != NULL) OPENSSL_free(pkt->data); OPENSSL_free(pkt); } typedef struct mempacket_test_ctx_st { STACK_OF(MEMPACKET) *pkts; unsigned int epoch; unsigned int currrec; unsigned int currpkt; unsigned int lastpkt; unsigned int injected; unsigned int noinject; unsigned int dropepoch; int droprec; int duprec; } MEMPACKET_TEST_CTX; static int mempacket_test_new(BIO *bi); static int mempacket_test_free(BIO *a); static int mempacket_test_read(BIO *b, char *out, int outl); static int mempacket_test_write(BIO *b, const char *in, int inl); static long mempacket_test_ctrl(BIO *b, int cmd, long num, void *ptr); static int mempacket_test_gets(BIO *bp, char *buf, int size); static int mempacket_test_puts(BIO *bp, const char *str); const BIO_METHOD *bio_s_mempacket_test(void) { if (meth_mem == NULL) { if (!TEST_ptr(meth_mem = BIO_meth_new(BIO_TYPE_MEMPACKET_TEST, "Mem Packet Test")) || !TEST_true(BIO_meth_set_write(meth_mem, mempacket_test_write)) || !TEST_true(BIO_meth_set_read(meth_mem, mempacket_test_read)) || !TEST_true(BIO_meth_set_puts(meth_mem, mempacket_test_puts)) || !TEST_true(BIO_meth_set_gets(meth_mem, mempacket_test_gets)) || !TEST_true(BIO_meth_set_ctrl(meth_mem, mempacket_test_ctrl)) || !TEST_true(BIO_meth_set_create(meth_mem, mempacket_test_new)) || !TEST_true(BIO_meth_set_destroy(meth_mem, mempacket_test_free))) return NULL; } return meth_mem; } void bio_s_mempacket_test_free(void) { BIO_meth_free(meth_mem); } static int mempacket_test_new(BIO *bio) { MEMPACKET_TEST_CTX *ctx; if (!TEST_ptr(ctx = OPENSSL_zalloc(sizeof(*ctx)))) return 0; if (!TEST_ptr(ctx->pkts = sk_MEMPACKET_new_null())) { OPENSSL_free(ctx); return 0; } ctx->dropepoch = 0; ctx->droprec = -1; BIO_set_init(bio, 1); BIO_set_data(bio, ctx); return 1; } static int mempacket_test_free(BIO *bio) { MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio); sk_MEMPACKET_pop_free(ctx->pkts, mempacket_free); OPENSSL_free(ctx); BIO_set_data(bio, NULL); BIO_set_init(bio, 0); return 1; } /* Record Header values */ #define EPOCH_HI 3 #define EPOCH_LO 4 #define RECORD_SEQUENCE 10 #define RECORD_LEN_HI 11 #define RECORD_LEN_LO 12 #define STANDARD_PACKET 0 static int mempacket_test_read(BIO *bio, char *out, int outl) { MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio); MEMPACKET *thispkt; unsigned char *rec; int rem; unsigned int seq, offset, len, epoch; BIO_clear_retry_flags(bio); thispkt = sk_MEMPACKET_value(ctx->pkts, 0); if (thispkt == NULL || thispkt->num != ctx->currpkt) { /* Probably run out of data */ BIO_set_retry_read(bio); return -1; } (void)sk_MEMPACKET_shift(ctx->pkts); ctx->currpkt++; if (outl > thispkt->len) outl = thispkt->len; if (thispkt->type != INJECT_PACKET_IGNORE_REC_SEQ && (ctx->injected || ctx->droprec >= 0)) { /* * Overwrite the record sequence number. We strictly number them in * the order received. Since we are actually a reliable transport * we know that there won't be any re-ordering. We overwrite to deal * with any packets that have been injected */ for (rem = thispkt->len, rec = thispkt->data; rem > 0; rem -= len) { if (rem < DTLS1_RT_HEADER_LENGTH) return -1; epoch = (rec[EPOCH_HI] << 8) | rec[EPOCH_LO]; if (epoch != ctx->epoch) { ctx->epoch = epoch; ctx->currrec = 0; } seq = ctx->currrec; offset = 0; do { rec[RECORD_SEQUENCE - offset] = seq & 0xFF; seq >>= 8; offset++; } while (seq > 0); len = ((rec[RECORD_LEN_HI] << 8) | rec[RECORD_LEN_LO]) + DTLS1_RT_HEADER_LENGTH; if (rem < (int)len) return -1; if (ctx->droprec == (int)ctx->currrec && ctx->dropepoch == epoch) { if (rem > (int)len) memmove(rec, rec + len, rem - len); outl -= len; ctx->droprec = -1; if (outl == 0) BIO_set_retry_read(bio); } else { rec += len; } ctx->currrec++; } } memcpy(out, thispkt->data, outl); mempacket_free(thispkt); return outl; } int mempacket_test_inject(BIO *bio, const char *in, int inl, int pktnum, int type) { MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio); MEMPACKET *thispkt = NULL, *looppkt, *nextpkt, *allpkts[3]; int i, duprec; const unsigned char *inu = (const unsigned char *)in; size_t len = ((inu[RECORD_LEN_HI] << 8) | inu[RECORD_LEN_LO]) + DTLS1_RT_HEADER_LENGTH; if (ctx == NULL) return -1; if ((size_t)inl < len) return -1; if ((size_t)inl == len) duprec = 0; else duprec = ctx->duprec > 0; /* We don't support arbitrary injection when duplicating records */ if (duprec && pktnum != -1) return -1; /* We only allow injection before we've started writing any data */ if (pktnum >= 0) { if (ctx->noinject) return -1; ctx->injected = 1; } else { ctx->noinject = 1; } for (i = 0; i < (duprec ? 3 : 1); i++) { if (!TEST_ptr(allpkts[i] = OPENSSL_malloc(sizeof(*thispkt)))) goto err; thispkt = allpkts[i]; if (!TEST_ptr(thispkt->data = OPENSSL_malloc(inl))) goto err; /* * If we are duplicating the packet, we duplicate it three times. The * first two times we drop the first record if there are more than one. * In this way we know that libssl will not be able to make progress * until it receives the last packet, and hence will be forced to * buffer these records. */ if (duprec && i != 2) { memcpy(thispkt->data, in + len, inl - len); thispkt->len = inl - len; } else { memcpy(thispkt->data, in, inl); thispkt->len = inl; } thispkt->num = (pktnum >= 0) ? (unsigned int)pktnum : ctx->lastpkt + i; thispkt->type = type; } for(i = 0; (looppkt = sk_MEMPACKET_value(ctx->pkts, i)) != NULL; i++) { /* Check if we found the right place to insert this packet */ if (looppkt->num > thispkt->num) { if (sk_MEMPACKET_insert(ctx->pkts, thispkt, i) == 0) goto err; /* If we're doing up front injection then we're done */ if (pktnum >= 0) return inl; /* * We need to do some accounting on lastpkt. We increment it first, * but it might now equal the value of injected packets, so we need * to skip over those */ ctx->lastpkt++; do { i++; nextpkt = sk_MEMPACKET_value(ctx->pkts, i); if (nextpkt != NULL && nextpkt->num == ctx->lastpkt) ctx->lastpkt++; else return inl; } while(1); } else if (looppkt->num == thispkt->num) { if (!ctx->noinject) { /* We injected two packets with the same packet number! */ goto err; } ctx->lastpkt++; thispkt->num++; } } /* * We didn't find any packets with a packet number equal to or greater than * this one, so we just add it onto the end */ for (i = 0; i < (duprec ? 3 : 1); i++) { thispkt = allpkts[i]; if (!sk_MEMPACKET_push(ctx->pkts, thispkt)) goto err; if (pktnum < 0) ctx->lastpkt++; } return inl; err: for (i = 0; i < (ctx->duprec > 0 ? 3 : 1); i++) mempacket_free(allpkts[i]); return -1; } static int mempacket_test_write(BIO *bio, const char *in, int inl) { return mempacket_test_inject(bio, in, inl, -1, STANDARD_PACKET); } static long mempacket_test_ctrl(BIO *bio, int cmd, long num, void *ptr) { long ret = 1; MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio); MEMPACKET *thispkt; switch (cmd) { case BIO_CTRL_EOF: ret = (long)(sk_MEMPACKET_num(ctx->pkts) == 0); break; case BIO_CTRL_GET_CLOSE: ret = BIO_get_shutdown(bio); break; case BIO_CTRL_SET_CLOSE: BIO_set_shutdown(bio, (int)num); break; case BIO_CTRL_WPENDING: ret = 0L; break; case BIO_CTRL_PENDING: thispkt = sk_MEMPACKET_value(ctx->pkts, 0); if (thispkt == NULL) ret = 0; else ret = thispkt->len; break; case BIO_CTRL_FLUSH: ret = 1; break; case MEMPACKET_CTRL_SET_DROP_EPOCH: ctx->dropepoch = (unsigned int)num; break; case MEMPACKET_CTRL_SET_DROP_REC: ctx->droprec = (int)num; break; case MEMPACKET_CTRL_GET_DROP_REC: ret = ctx->droprec; break; case MEMPACKET_CTRL_SET_DUPLICATE_REC: ctx->duprec = (int)num; break; case BIO_CTRL_RESET: case BIO_CTRL_DUP: case BIO_CTRL_PUSH: case BIO_CTRL_POP: default: ret = 0; break; } return ret; } static int mempacket_test_gets(BIO *bio, char *buf, int size) { /* We don't support this - not needed anyway */ return -1; } static int mempacket_test_puts(BIO *bio, const char *str) { return mempacket_test_write(bio, str, strlen(str)); } static int always_retry_new(BIO *bi); static int always_retry_free(BIO *a); static int always_retry_read(BIO *b, char *out, int outl); static int always_retry_write(BIO *b, const char *in, int inl); static long always_retry_ctrl(BIO *b, int cmd, long num, void *ptr); static int always_retry_gets(BIO *bp, char *buf, int size); static int always_retry_puts(BIO *bp, const char *str); const BIO_METHOD *bio_s_always_retry(void) { if (meth_always_retry == NULL) { if (!TEST_ptr(meth_always_retry = BIO_meth_new(BIO_TYPE_ALWAYS_RETRY, "Always Retry")) || !TEST_true(BIO_meth_set_write(meth_always_retry, always_retry_write)) || !TEST_true(BIO_meth_set_read(meth_always_retry, always_retry_read)) || !TEST_true(BIO_meth_set_puts(meth_always_retry, always_retry_puts)) || !TEST_true(BIO_meth_set_gets(meth_always_retry, always_retry_gets)) || !TEST_true(BIO_meth_set_ctrl(meth_always_retry, always_retry_ctrl)) || !TEST_true(BIO_meth_set_create(meth_always_retry, always_retry_new)) || !TEST_true(BIO_meth_set_destroy(meth_always_retry, always_retry_free))) return NULL; } return meth_always_retry; } void bio_s_always_retry_free(void) { BIO_meth_free(meth_always_retry); } static int always_retry_new(BIO *bio) { BIO_set_init(bio, 1); return 1; } static int always_retry_free(BIO *bio) { BIO_set_data(bio, NULL); BIO_set_init(bio, 0); return 1; } static int always_retry_read(BIO *bio, char *out, int outl) { BIO_set_retry_read(bio); return -1; } static int always_retry_write(BIO *bio, const char *in, int inl) { BIO_set_retry_write(bio); return -1; } static long always_retry_ctrl(BIO *bio, int cmd, long num, void *ptr) { long ret = 1; switch (cmd) { case BIO_CTRL_FLUSH: BIO_set_retry_write(bio); /* fall through */ case BIO_CTRL_EOF: case BIO_CTRL_RESET: case BIO_CTRL_DUP: case BIO_CTRL_PUSH: case BIO_CTRL_POP: default: ret = 0; break; } return ret; } static int always_retry_gets(BIO *bio, char *buf, int size) { BIO_set_retry_read(bio); return -1; } static int always_retry_puts(BIO *bio, const char *str) { BIO_set_retry_write(bio); return -1; } int create_ssl_ctx_pair(OPENSSL_CTX *libctx, const SSL_METHOD *sm, const SSL_METHOD *cm, int min_proto_version, int max_proto_version, SSL_CTX **sctx, SSL_CTX **cctx, char *certfile, char *privkeyfile) { SSL_CTX *serverctx = NULL; SSL_CTX *clientctx = NULL; if (*sctx != NULL) serverctx = *sctx; else if (!TEST_ptr(serverctx = SSL_CTX_new_with_libctx(libctx, NULL, sm))) goto err; if (cctx != NULL) { if (*cctx != NULL) clientctx = *cctx; else if (!TEST_ptr(clientctx = SSL_CTX_new_with_libctx(libctx, NULL, cm))) goto err; } if ((min_proto_version > 0 && !TEST_true(SSL_CTX_set_min_proto_version(serverctx, min_proto_version))) || (max_proto_version > 0 && !TEST_true(SSL_CTX_set_max_proto_version(serverctx, max_proto_version)))) goto err; if (clientctx != NULL && ((min_proto_version > 0 && !TEST_true(SSL_CTX_set_min_proto_version(clientctx, min_proto_version))) || (max_proto_version > 0 && !TEST_true(SSL_CTX_set_max_proto_version(clientctx, max_proto_version))))) goto err; if (certfile != NULL && privkeyfile != NULL) { if (!TEST_int_eq(SSL_CTX_use_certificate_file(serverctx, certfile, SSL_FILETYPE_PEM), 1) || !TEST_int_eq(SSL_CTX_use_PrivateKey_file(serverctx, privkeyfile, SSL_FILETYPE_PEM), 1) || !TEST_int_eq(SSL_CTX_check_private_key(serverctx), 1)) goto err; } #ifndef OPENSSL_NO_DH SSL_CTX_set_dh_auto(serverctx, 1); #endif *sctx = serverctx; if (cctx != NULL) *cctx = clientctx; return 1; err: SSL_CTX_free(serverctx); SSL_CTX_free(clientctx); return 0; } #define MAXLOOPS 1000000 #if !defined(OPENSSL_NO_KTLS) && !defined(OPENSSL_NO_SOCK) static int set_nb(int fd) { int flags; flags = fcntl(fd,F_GETFL,0); if (flags == -1) return flags; flags = fcntl(fd, F_SETFL, flags | O_NONBLOCK); return flags; } int create_test_sockets(int *cfd, int *sfd) { struct sockaddr_in sin; const char *host = "127.0.0.1"; int cfd_connected = 0, ret = 0; socklen_t slen = sizeof(sin); int afd = -1; *cfd = -1; *sfd = -1; memset ((char *) &sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_addr.s_addr = inet_addr(host); afd = socket(AF_INET, SOCK_STREAM, 0); if (afd < 0) return 0; if (bind(afd, (struct sockaddr*)&sin, sizeof(sin)) < 0) goto out; if (getsockname(afd, (struct sockaddr*)&sin, &slen) < 0) goto out; if (listen(afd, 1) < 0) goto out; *cfd = socket(AF_INET, SOCK_STREAM, 0); if (*cfd < 0) goto out; if (set_nb(afd) == -1) goto out; while (*sfd == -1 || !cfd_connected ) { *sfd = accept(afd, NULL, 0); if (*sfd == -1 && errno != EAGAIN) goto out; if (!cfd_connected && connect(*cfd, (struct sockaddr*)&sin, sizeof(sin)) < 0) goto out; else cfd_connected = 1; } if (set_nb(*cfd) == -1 || set_nb(*sfd) == -1) goto out; ret = 1; goto success; out: if (*cfd != -1) close(*cfd); if (*sfd != -1) close(*sfd); success: if (afd != -1) close(afd); return ret; } int create_ssl_objects2(SSL_CTX *serverctx, SSL_CTX *clientctx, SSL **sssl, SSL **cssl, int sfd, int cfd) { SSL *serverssl = NULL, *clientssl = NULL; BIO *s_to_c_bio = NULL, *c_to_s_bio = NULL; if (*sssl != NULL) serverssl = *sssl; else if (!TEST_ptr(serverssl = SSL_new(serverctx))) goto error; if (*cssl != NULL) clientssl = *cssl; else if (!TEST_ptr(clientssl = SSL_new(clientctx))) goto error; if (!TEST_ptr(s_to_c_bio = BIO_new_socket(sfd, BIO_NOCLOSE)) || !TEST_ptr(c_to_s_bio = BIO_new_socket(cfd, BIO_NOCLOSE))) goto error; SSL_set_bio(clientssl, c_to_s_bio, c_to_s_bio); SSL_set_bio(serverssl, s_to_c_bio, s_to_c_bio); *sssl = serverssl; *cssl = clientssl; return 1; error: SSL_free(serverssl); SSL_free(clientssl); BIO_free(s_to_c_bio); BIO_free(c_to_s_bio); return 0; } #endif /* * NOTE: Transfers control of the BIOs - this function will free them on error */ int create_ssl_objects(SSL_CTX *serverctx, SSL_CTX *clientctx, SSL **sssl, SSL **cssl, BIO *s_to_c_fbio, BIO *c_to_s_fbio) { SSL *serverssl = NULL, *clientssl = NULL; BIO *s_to_c_bio = NULL, *c_to_s_bio = NULL; if (*sssl != NULL) serverssl = *sssl; else if (!TEST_ptr(serverssl = SSL_new(serverctx))) goto error; if (*cssl != NULL) clientssl = *cssl; else if (!TEST_ptr(clientssl = SSL_new(clientctx))) goto error; if (SSL_is_dtls(clientssl)) { if (!TEST_ptr(s_to_c_bio = BIO_new(bio_s_mempacket_test())) || !TEST_ptr(c_to_s_bio = BIO_new(bio_s_mempacket_test()))) goto error; } else { if (!TEST_ptr(s_to_c_bio = BIO_new(BIO_s_mem())) || !TEST_ptr(c_to_s_bio = BIO_new(BIO_s_mem()))) goto error; } if (s_to_c_fbio != NULL && !TEST_ptr(s_to_c_bio = BIO_push(s_to_c_fbio, s_to_c_bio))) goto error; if (c_to_s_fbio != NULL && !TEST_ptr(c_to_s_bio = BIO_push(c_to_s_fbio, c_to_s_bio))) goto error; /* Set Non-blocking IO behaviour */ BIO_set_mem_eof_return(s_to_c_bio, -1); BIO_set_mem_eof_return(c_to_s_bio, -1); /* Up ref these as we are passing them to two SSL objects */ SSL_set_bio(serverssl, c_to_s_bio, s_to_c_bio); BIO_up_ref(s_to_c_bio); BIO_up_ref(c_to_s_bio); SSL_set_bio(clientssl, s_to_c_bio, c_to_s_bio); *sssl = serverssl; *cssl = clientssl; return 1; error: SSL_free(serverssl); SSL_free(clientssl); BIO_free(s_to_c_bio); BIO_free(c_to_s_bio); BIO_free(s_to_c_fbio); BIO_free(c_to_s_fbio); return 0; } /* * Create an SSL connection, but does not read any post-handshake * NewSessionTicket messages. * If |read| is set and we're using DTLS then we will attempt to SSL_read on * the connection once we've completed one half of it, to ensure any retransmits * get triggered. * We stop the connection attempt (and return a failure value) if either peer * has SSL_get_error() return the value in the |want| parameter. The connection * attempt could be restarted by a subsequent call to this function. */ int create_bare_ssl_connection(SSL *serverssl, SSL *clientssl, int want, int read) { int retc = -1, rets = -1, err, abortctr = 0; int clienterr = 0, servererr = 0; int isdtls = SSL_is_dtls(serverssl); do { err = SSL_ERROR_WANT_WRITE; while (!clienterr && retc <= 0 && err == SSL_ERROR_WANT_WRITE) { retc = SSL_connect(clientssl); if (retc <= 0) err = SSL_get_error(clientssl, retc); } if (!clienterr && retc <= 0 && err != SSL_ERROR_WANT_READ) { TEST_info("SSL_connect() failed %d, %d", retc, err); if (want != SSL_ERROR_SSL) TEST_openssl_errors(); clienterr = 1; } if (want != SSL_ERROR_NONE && err == want) return 0; err = SSL_ERROR_WANT_WRITE; while (!servererr && rets <= 0 && err == SSL_ERROR_WANT_WRITE) { rets = SSL_accept(serverssl); if (rets <= 0) err = SSL_get_error(serverssl, rets); } if (!servererr && rets <= 0 && err != SSL_ERROR_WANT_READ && err != SSL_ERROR_WANT_X509_LOOKUP) { TEST_info("SSL_accept() failed %d, %d", rets, err); if (want != SSL_ERROR_SSL) TEST_openssl_errors(); servererr = 1; } if (want != SSL_ERROR_NONE && err == want) return 0; if (clienterr && servererr) return 0; if (isdtls && read) { unsigned char buf[20]; /* Trigger any retransmits that may be appropriate */ if (rets > 0 && retc <= 0) { if (SSL_read(serverssl, buf, sizeof(buf)) > 0) { /* We don't expect this to succeed! */ TEST_info("Unexpected SSL_read() success!"); return 0; } } if (retc > 0 && rets <= 0) { if (SSL_read(clientssl, buf, sizeof(buf)) > 0) { /* We don't expect this to succeed! */ TEST_info("Unexpected SSL_read() success!"); return 0; } } } if (++abortctr == MAXLOOPS) { TEST_info("No progress made"); return 0; } if (isdtls && abortctr <= 50 && (abortctr % 10) == 0) { /* * It looks like we're just spinning. Pause for a short period to * give the DTLS timer a chance to do something. We only do this for * the first few times to prevent hangs. */ ossl_sleep(50); } } while (retc <=0 || rets <= 0); return 1; } /* * Create an SSL connection including any post handshake NewSessionTicket * messages. */ int create_ssl_connection(SSL *serverssl, SSL *clientssl, int want) { int i; unsigned char buf; size_t readbytes; if (!create_bare_ssl_connection(serverssl, clientssl, want, 1)) return 0; /* * We attempt to read some data on the client side which we expect to fail. * This will ensure we have received the NewSessionTicket in TLSv1.3 where * appropriate. We do this twice because there are 2 NewSessionTickets. */ for (i = 0; i < 2; i++) { if (SSL_read_ex(clientssl, &buf, sizeof(buf), &readbytes) > 0) { if (!TEST_ulong_eq(readbytes, 0)) return 0; } else if (!TEST_int_eq(SSL_get_error(clientssl, 0), SSL_ERROR_WANT_READ)) { return 0; } } return 1; } void shutdown_ssl_connection(SSL *serverssl, SSL *clientssl) { SSL_shutdown(clientssl); SSL_shutdown(serverssl); SSL_free(serverssl); SSL_free(clientssl); }