--- /dev/null
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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
+ */
+
+/*
+ * Unit test for Cisco DTLS1_BAD_VER session resume, as used by
+ * AnyConnect VPN protocol.
+ *
+ * This is designed to exercise the code paths in
+ * http://git.infradead.org/users/dwmw2/openconnect.git/blob/HEAD:/dtls.c
+ * which have frequently been affected by regressions in DTLS1_BAD_VER
+ * support.
+ *
+ * Note that unlike other SSL tests, we don't test against our own SSL
+ * server method. Firstly because we don't have one; we *only* support
+ * DTLS1_BAD_VER as a client. And secondly because even if that were
+ * fixed up it's the wrong thing to test against — because if changes
+ * are made in generic DTLS code which don't take DTLS1_BAD_VER into
+ * account, there's plenty of scope for making those changes such that
+ * they break *both* the client and the server in the same way.
+ *
+ * So we handle the server side manually. In a session resume there isn't
+ * much to be done anyway.
+ */
+#include <string.h>
+
+#include <openssl/opensslconf.h>
+#include <openssl/bio.h>
+#include <openssl/crypto.h>
+#include <openssl/evp.h>
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+#include <openssl/rand.h>
+#include <openssl/kdf.h>
+
+#include "ssl/packet_locl.h"
+#include "e_os.h" /* for OSSL_NELEM() */
+
+/* For DTLS1_BAD_VER packets the MAC doesn't include the handshake header */
+#define MAC_OFFSET (DTLS1_RT_HEADER_LENGTH + DTLS1_HM_HEADER_LENGTH)
+
+static unsigned char client_random[SSL3_RANDOM_SIZE];
+static unsigned char server_random[SSL3_RANDOM_SIZE];
+
+/* These are all generated locally, sized purely according to our own whim */
+static unsigned char session_id[32];
+static unsigned char master_secret[48];
+static unsigned char cookie[20];
+
+/* We've hard-coded the cipher suite; we know it's 104 bytes */
+static unsigned char key_block[104];
+#define mac_key (key_block + 20)
+#define dec_key (key_block + 40)
+#define enc_key (key_block + 56)
+
+static EVP_MD_CTX *handshake_md;
+
+static int do_PRF(const void *seed1, int seed1_len,
+ const void *seed2, int seed2_len,
+ const void *seed3, int seed3_len,
+ unsigned char *out, int olen)
+{
+ EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_TLS1_PRF, NULL);
+ size_t outlen = olen;
+
+ /* No error handling. If it all screws up, the test will fail anyway */
+ EVP_PKEY_derive_init(pctx);
+ EVP_PKEY_CTX_set_tls1_prf_md(pctx, EVP_md5_sha1());
+ EVP_PKEY_CTX_set1_tls1_prf_secret(pctx, master_secret, sizeof(master_secret));
+ EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed1, seed1_len);
+ EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed2, seed2_len);
+ EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed3, seed3_len);
+ EVP_PKEY_derive(pctx, out, &outlen);
+ EVP_PKEY_CTX_free(pctx);
+ return 1;
+}
+
+static SSL_SESSION *client_session(void)
+{
+ static unsigned char session_asn1[] = {
+ 0x30, 0x5F, /* SEQUENCE, length 0x5F */
+ 0x02, 0x01, 0x01, /* INTEGER, SSL_SESSION_ASN1_VERSION */
+ 0x02, 0x02, 0x01, 0x00, /* INTEGER, DTLS1_BAD_VER */
+ 0x04, 0x02, 0x00, 0x2F, /* OCTET_STRING, AES128-SHA */
+ 0x04, 0x20, /* OCTET_STRING, session id */
+#define SS_SESSID_OFS 15 /* Session ID goes here */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x04, 0x30, /* OCTET_STRING, master secret */
+#define SS_SECRET_OFS 49 /* Master secret goes here */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ };
+ const unsigned char *p = session_asn1;
+
+ /* Copy the randomly-generated fields into the above ASN1 */
+ memcpy(session_asn1 + SS_SESSID_OFS, session_id, sizeof(session_id));
+ memcpy(session_asn1 + SS_SECRET_OFS, master_secret, sizeof(master_secret));
+
+ return d2i_SSL_SESSION(NULL, &p, sizeof(session_asn1));
+}
+
+/* PACKET_equal() doesn't quite do what we need. Provide a version that
+ * does, in a form that can easily be moved to ssl_locl.h if anyone else
+ * cares to come up with a better name and use it too... */
+__owur static ossl_inline int PACKET_starts(PACKET *pkt, const void *ptr,
+ size_t num)
+{
+ if (PACKET_remaining(pkt) < num)
+ return 0;
+ if (CRYPTO_memcmp(pkt->curr, ptr, num) != 0)
+ return 0;
+
+ packet_forward(pkt, num);
+ return 1;
+}
+
+/* Returns 1 for initial ClientHello, 2 for ClientHello with cookie */
+static int validate_client_hello(BIO *wbio)
+{
+ PACKET pkt;
+ long len;
+ unsigned char *data;
+ int cookie_found = 0;
+ unsigned int u;
+
+ len = BIO_get_mem_data(wbio, (char **)&data);
+ if (!PACKET_buf_init(&pkt, data, len))
+ return 0;
+
+ /* Check record header type */
+ if (!PACKET_get_1(&pkt, &u) || u != SSL3_RT_HANDSHAKE)
+ return 0;
+ /* Version */
+ if (!PACKET_get_net_2(&pkt, &u) || u != DTLS1_BAD_VER)
+ return 0;
+ /* Skip the rest of the record header */
+ if (!PACKET_forward(&pkt, DTLS1_RT_HEADER_LENGTH - 3))
+ return 0;
+
+ /* Check it's a ClientHello */
+ if (!PACKET_get_1(&pkt, &u) || u != SSL3_MT_CLIENT_HELLO)
+ return 0;
+ /* Skip the rest of the handshake message header */
+ if (!PACKET_forward(&pkt, DTLS1_HM_HEADER_LENGTH - 1))
+ return 0;
+
+ /* Check client version */
+ if (!PACKET_get_net_2(&pkt, &u) || u != DTLS1_BAD_VER)
+ return 0;
+
+ /* Store random */
+ if (!PACKET_copy_bytes(&pkt, client_random, SSL3_RANDOM_SIZE))
+ return 0;
+
+ /* Check session id length and content */
+ if (!PACKET_get_1(&pkt, &u))
+ return 0;
+ if (u != sizeof(session_id) || !PACKET_starts(&pkt, session_id, u))
+ return 0;
+
+ /* Check cookie */
+ if (!PACKET_get_1(&pkt, &u))
+ return 0;
+ if (u) {
+ if (u != sizeof(cookie) || !PACKET_starts(&pkt, cookie, u))
+ return 0;
+ cookie_found = 1;
+ }
+
+ /* Skip ciphers */
+ if (!PACKET_get_net_2(&pkt, &u) || !PACKET_forward(&pkt, u))
+ return 0;
+
+ /* Skip compression */
+ if (!PACKET_get_1(&pkt, &u) || !PACKET_forward(&pkt, u))
+ return 0;
+
+ /* Skip extensions */
+ if (!PACKET_get_net_2(&pkt, &u) || !PACKET_forward(&pkt, u))
+ return 0;
+
+ /* Now we are at the end */
+ if (PACKET_remaining(&pkt))
+ return 0;
+
+ /* Update handshake MAC for second ClientHello (with cookie) */
+ if (cookie_found && !EVP_DigestUpdate(handshake_md, data + MAC_OFFSET,
+ len - MAC_OFFSET))
+ printf("EVP_DigestUpdate() failed\n");
+
+ (void)BIO_reset(wbio);
+
+ return 1 + cookie_found;
+}
+
+static int send_hello_verify(BIO *rbio)
+{
+ static unsigned char hello_verify[] = {
+ 0x16, /* Handshake */
+ 0x01, 0x00, /* DTLS1_BAD_VER */
+ 0x00, 0x00, /* Epoch 0 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Seq# 0 */
+ 0x00, 0x23, /* Length */
+ 0x03, /* Hello Verify */
+ 0x00, 0x00, 0x17, /* Length */
+ 0x00, 0x00, /* Seq# 0 */
+ 0x00, 0x00, 0x00, /* Fragment offset */
+ 0x00, 0x00, 0x17, /* Fragment length */
+ 0x01, 0x00, /* DTLS1_BAD_VER */
+ 0x14, /* Cookie length */
+#define HV_COOKIE_OFS 28 /* Cookie goes here */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ };
+
+ memcpy(hello_verify + HV_COOKIE_OFS, cookie, sizeof(cookie));
+
+ BIO_write(rbio, hello_verify, sizeof(hello_verify));
+
+ return 1;
+}
+
+static int send_server_hello(BIO *rbio)
+{
+ static unsigned char server_hello[] = {
+ 0x16, /* Handshake */
+ 0x01, 0x00, /* DTLS1_BAD_VER */
+ 0x00, 0x00, /* Epoch 0 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* Seq# 1 */
+ 0x00, 0x52, /* Length */
+ 0x02, /* Server Hello */
+ 0x00, 0x00, 0x46, /* Length */
+ 0x00, 0x01, /* Seq# */
+ 0x00, 0x00, 0x00, /* Fragment offset */
+ 0x00, 0x00, 0x46, /* Fragment length */
+ 0x01, 0x00, /* DTLS1_BAD_VER */
+#define SH_RANDOM_OFS 27 /* Server random goes here */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x20, /* Session ID length */
+#define SH_SESSID_OFS 60 /* Session ID goes here */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x2f, /* Cipher suite AES128-SHA */
+ 0x00, /* Compression null */
+ };
+ static unsigned char change_cipher_spec[] = {
+ 0x14, /* Change Cipher Spec */
+ 0x01, 0x00, /* DTLS1_BAD_VER */
+ 0x00, 0x00, /* Epoch 0 */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, /* Seq# 2 */
+ 0x00, 0x03, /* Length */
+ 0x01, 0x00, 0x02, /* Message */
+ };
+
+ memcpy(server_hello + SH_RANDOM_OFS, server_random, sizeof(server_random));
+ memcpy(server_hello + SH_SESSID_OFS, session_id, sizeof(session_id));
+
+ if (!EVP_DigestUpdate(handshake_md, server_hello + MAC_OFFSET,
+ sizeof(server_hello) - MAC_OFFSET))
+ printf("EVP_DigestUpdate() failed\n");
+
+ BIO_write(rbio, server_hello, sizeof(server_hello));
+ BIO_write(rbio, change_cipher_spec, sizeof(change_cipher_spec));
+
+ return 1;
+}
+
+/* Create header, HMAC, pad, encrypt and send a record */
+static int send_record(BIO *rbio, unsigned char type, unsigned long seqnr,
+ const void *msg, size_t len)
+{
+ /* Note that the order of the record header fields on the wire,
+ * and in the HMAC, is different. So we just keep them in separate
+ * variables and handle them individually. */
+ static unsigned char epoch[2] = { 0x00, 0x01 };
+ static unsigned char seq[6] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ static unsigned char ver[2] = { 0x01, 0x00 }; /* DTLS1_BAD_VER */
+ unsigned char lenbytes[2];
+ HMAC_CTX *ctx;
+ EVP_CIPHER_CTX *enc_ctx;
+ unsigned char iv[16];
+ unsigned char pad;
+ unsigned char *enc;
+
+#ifdef SIXTY_FOUR_BIT_LONG
+ seq[0] = (seqnr >> 40) & 0xff;
+ seq[1] = (seqnr >> 32) & 0xff;
+#endif
+ seq[2] = (seqnr >> 24) & 0xff;
+ seq[3] = (seqnr >> 16) & 0xff;
+ seq[4] = (seqnr >> 8) & 0xff;
+ seq[5] = seqnr & 0xff;
+
+ pad = 15 - ((len + SHA_DIGEST_LENGTH) % 16);
+ enc = OPENSSL_malloc(len + SHA_DIGEST_LENGTH + 1 + pad);
+ if (enc == NULL)
+ return 0;
+
+ /* Copy record to encryption buffer */
+ memcpy(enc, msg, len);
+
+ /* Append HMAC to data */
+ ctx = HMAC_CTX_new();
+ HMAC_Init_ex(ctx, mac_key, 20, EVP_sha1(), NULL);
+ HMAC_Update(ctx, epoch, 2);
+ HMAC_Update(ctx, seq, 6);
+ HMAC_Update(ctx, &type, 1);
+ HMAC_Update(ctx, ver, 2); /* Version */
+ lenbytes[0] = len >> 8;
+ lenbytes[1] = len & 0xff;
+ HMAC_Update(ctx, lenbytes, 2); /* Length */
+ HMAC_Update(ctx, enc, len); /* Finally the data itself */
+ HMAC_Final(ctx, enc + len, NULL);
+ HMAC_CTX_free(ctx);
+
+ /* Append padding bytes */
+ len += SHA_DIGEST_LENGTH;
+ do {
+ enc[len++] = pad;
+ } while (len % 16);
+
+ /* Generate IV, and encrypt */
+ RAND_bytes(iv, sizeof(iv));
+ enc_ctx = EVP_CIPHER_CTX_new();
+ EVP_CipherInit_ex(enc_ctx, EVP_aes_128_cbc(), NULL, enc_key, iv, 1);
+ EVP_Cipher(enc_ctx, enc, enc, len);
+ EVP_CIPHER_CTX_free(enc_ctx);
+
+ /* Finally write header (from fragmented variables), IV and encrypted record */
+ BIO_write(rbio, &type, 1);
+ BIO_write(rbio, ver, 2);
+ BIO_write(rbio, epoch, 2);
+ BIO_write(rbio, seq, 6);
+ lenbytes[0] = (len + sizeof(iv)) >> 8;
+ lenbytes[1] = (len + sizeof(iv)) & 0xff;
+ BIO_write(rbio, lenbytes, 2);
+
+ BIO_write(rbio, iv, sizeof(iv));
+ BIO_write(rbio, enc, len);
+
+ OPENSSL_free(enc);
+ return 1;
+}
+
+static int send_finished(SSL *s, BIO *rbio)
+{
+ static unsigned char finished_msg[DTLS1_HM_HEADER_LENGTH +
+ TLS1_FINISH_MAC_LENGTH] = {
+ 0x14, /* Finished */
+ 0x00, 0x00, 0x0c, /* Length */
+ 0x00, 0x03, /* Seq# 3 */
+ 0x00, 0x00, 0x00, /* Fragment offset */
+ 0x00, 0x00, 0x0c, /* Fragment length */
+ /* Finished MAC (12 bytes) */
+ };
+ unsigned char handshake_hash[EVP_MAX_MD_SIZE];
+
+ /* Derive key material */
+ do_PRF(TLS_MD_KEY_EXPANSION_CONST, TLS_MD_KEY_EXPANSION_CONST_SIZE,
+ server_random, SSL3_RANDOM_SIZE,
+ client_random, SSL3_RANDOM_SIZE,
+ key_block, sizeof(key_block));
+
+ /* Generate Finished MAC */
+ if (!EVP_DigestFinal_ex(handshake_md, handshake_hash, NULL))
+ printf("EVP_DigestFinal_ex() failed\n");
+
+ do_PRF(TLS_MD_SERVER_FINISH_CONST, TLS_MD_SERVER_FINISH_CONST_SIZE,
+ handshake_hash, EVP_MD_CTX_size(handshake_md),
+ NULL, 0,
+ finished_msg + DTLS1_HM_HEADER_LENGTH, TLS1_FINISH_MAC_LENGTH);
+
+ return send_record(rbio, SSL3_RT_HANDSHAKE, 0,
+ finished_msg, sizeof(finished_msg));
+}
+
+static int validate_ccs(BIO *wbio)
+{
+ PACKET pkt;
+ long len;
+ unsigned char *data;
+ unsigned int u;
+
+ len = BIO_get_mem_data(wbio, (char **)&data);
+ if (!PACKET_buf_init(&pkt, data, len))
+ return 0;
+
+ /* Check record header type */
+ if (!PACKET_get_1(&pkt, &u) || u != SSL3_RT_CHANGE_CIPHER_SPEC)
+ return 0;
+ /* Version */
+ if (!PACKET_get_net_2(&pkt, &u) || u != DTLS1_BAD_VER)
+ return 0;
+ /* Skip the rest of the record header */
+ if (!PACKET_forward(&pkt, DTLS1_RT_HEADER_LENGTH - 3))
+ return 0;
+
+ /* Check ChangeCipherSpec message */
+ if (!PACKET_get_1(&pkt, &u) || u != SSL3_MT_CCS)
+ return 0;
+ /* A DTLS1_BAD_VER ChangeCipherSpec also contains the
+ * handshake sequence number (which is 2 here) */
+ if (!PACKET_get_net_2(&pkt, &u) || u != 0x0002)
+ return 0;
+
+ /* Now check the Finished packet */
+ if (!PACKET_get_1(&pkt, &u) || u != SSL3_RT_HANDSHAKE)
+ return 0;
+ if (!PACKET_get_net_2(&pkt, &u) || u != DTLS1_BAD_VER)
+ return 0;
+
+ /* Check epoch is now 1 */
+ if (!PACKET_get_net_2(&pkt, &u) || u != 0x0001)
+ return 0;
+
+ /* That'll do for now. If OpenSSL accepted *our* Finished packet
+ * then it's evidently remembered that DTLS1_BAD_VER doesn't
+ * include the handshake header in the MAC. There's not a lot of
+ * point in implementing decryption here, just to check that it
+ * continues to get it right for one more packet. */
+
+ return 1;
+}
+
+#define NODROP(x) { x##UL, 0 }
+#define DROP(x) { x##UL, 1 }
+
+static struct {
+ unsigned long seq;
+ int drop;
+} tests[] = {
+ NODROP(1), NODROP(3), NODROP(2),
+ NODROP(0x1234), NODROP(0x1230), NODROP(0x1235),
+ NODROP(0xffff), NODROP(0x10001), NODROP(0xfffe), NODROP(0x10000),
+ DROP(0x10001), DROP(0xff), NODROP(0x100000), NODROP(0x800000), NODROP(0x7fffe1),
+ NODROP(0xffffff), NODROP(0x1000000), NODROP(0xfffffe), DROP(0xffffff), NODROP(0x1000010),
+ NODROP(0xfffffd), NODROP(0x1000011), DROP(0x12), NODROP(0x1000012),
+ NODROP(0x1ffffff), NODROP(0x2000000), DROP(0x1ff00fe), NODROP(0x2000001),
+ NODROP(0x20fffff), NODROP(0x2105500), DROP(0x20ffffe), NODROP(0x21054ff),
+ NODROP(0x211ffff), DROP(0x2110000), NODROP(0x2120000)
+ /* The last test should be NODROP, because a DROP wouldn't get tested. */
+};
+
+int main(int argc, char *argv[])
+{
+ SSL_SESSION *sess;
+ SSL_CTX *ctx;
+ SSL *con;
+ BIO *rbio;
+ BIO *wbio;
+ BIO *err;
+ int testresult = 0;
+ int ret;
+ int i;
+
+ err = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT);
+
+ CRYPTO_set_mem_debug(1);
+ CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
+
+ RAND_bytes(session_id, sizeof(session_id));
+ RAND_bytes(master_secret, sizeof(master_secret));
+ RAND_bytes(cookie, sizeof(cookie));
+ RAND_bytes(server_random + 4, sizeof(server_random) - 4);
+ time((void *)server_random);
+
+ sess = client_session();
+ if (sess == NULL) {
+ printf("Failed to generate SSL_SESSION\n");
+ goto end;
+ }
+
+ handshake_md = EVP_MD_CTX_new();
+ if (handshake_md == NULL ||
+ !EVP_DigestInit_ex(handshake_md, EVP_md5_sha1(), NULL)) {
+ printf("Failed to initialise handshake_md\n");
+ goto end;
+ }
+
+ ctx = SSL_CTX_new(DTLS_client_method());
+ if (ctx == NULL) {
+ printf("Failed to allocate SSL_CTX\n");
+ goto end_md;
+ }
+ if (!SSL_CTX_set_min_proto_version(ctx, DTLS1_BAD_VER)) {
+ printf("SSL_CTX_set_min_proto_version() failed\n");
+ goto end_ctx;
+ }
+ if (!SSL_CTX_set_max_proto_version(ctx, DTLS1_BAD_VER)) {
+ printf("SSL_CTX_set_max_proto_version() failed\n");
+ goto end_ctx;
+ }
+
+ if (!SSL_CTX_set_cipher_list(ctx, "AES128-SHA")) {
+ printf("SSL_CTX_set_cipher_list() failed\n");
+ goto end_ctx;
+ }
+
+ con = SSL_new(ctx);
+ if (!SSL_set_session(con, sess)) {
+ printf("SSL_set_session() failed\n");
+ goto end_con;
+ }
+ SSL_SESSION_free(sess);
+
+ rbio = BIO_new(BIO_s_mem());
+ wbio = BIO_new(BIO_s_mem());
+
+ BIO_set_nbio(rbio, 1);
+ BIO_set_nbio(wbio, 1);
+
+ SSL_set_bio(con, rbio, wbio);
+ SSL_set_connect_state(con);
+
+ /* Send initial ClientHello */
+ ret = SSL_do_handshake(con);
+ if (ret > 0 || SSL_get_error(con, ret) != SSL_ERROR_WANT_READ) {
+ printf("Unexpected handshake result at initial call!\n");
+ goto end_con;
+ }
+
+ if (validate_client_hello(wbio) != 1) {
+ printf("Initial ClientHello failed validation\n");
+ goto end_con;
+ }
+ if (send_hello_verify(rbio) != 1) {
+ printf("Failed to send HelloVerify\n");
+ goto end_con;
+ }
+ ret = SSL_do_handshake(con);
+ if (ret > 0 || SSL_get_error(con, ret) != SSL_ERROR_WANT_READ) {
+ printf("Unexpected handshake result after HelloVerify!\n");
+ goto end_con;
+ }
+ if (validate_client_hello(wbio) != 2) {
+ printf("Second ClientHello failed validation\n");
+ goto end_con;
+ }
+ if (send_server_hello(rbio) != 1) {
+ printf("Failed to send ServerHello\n");
+ goto end_con;
+ }
+ ret = SSL_do_handshake(con);
+ if (ret > 0 || SSL_get_error(con, ret) != SSL_ERROR_WANT_READ) {
+ printf("Unexpected handshake result after ServerHello!\n");
+ goto end_con;
+ }
+ if (send_finished(con, rbio) != 1) {
+ printf("Failed to send Finished\n");
+ goto end_con;
+ }
+ ret = SSL_do_handshake(con);
+ if (ret < 1) {
+ printf("Handshake not successful after Finished!\n");
+ goto end_con;
+ }
+ if (validate_ccs(wbio) != 1) {
+ printf("Failed to validate client CCS/Finished\n");
+ goto end_con;
+ }
+
+ /* While we're here and crafting packets by hand, we might as well do a
+ bit of a stress test on the DTLS record replay handling. Not Cisco-DTLS
+ specific but useful anyway for the general case. It's been broken
+ before, and in fact was broken even for a basic 0, 2, 1 test case
+ when this test was first added.... */
+ for (i = 0; i < (int)OSSL_NELEM(tests); i++) {
+ unsigned long recv_buf[2];
+
+ if (send_record(rbio, SSL3_RT_APPLICATION_DATA, tests[i].seq,
+ &tests[i].seq, sizeof(unsigned long)) != 1) {
+ printf("Failed to send data seq #0x%lx (%d)\n",
+ tests[i].seq, i);
+ goto end_con;
+ }
+
+ if (tests[i].drop)
+ continue;
+
+ ret = SSL_read(con, recv_buf, 2 * sizeof(unsigned long));
+ if (ret != sizeof(unsigned long)) {
+ printf("SSL_read failed or wrong size on seq#0x%lx (%d)\n",
+ tests[i].seq, i);
+ goto end_con;
+ }
+ if (recv_buf[0] != tests[i].seq) {
+ printf("Wrong data packet received (0x%lx not 0x%lx) at packet %d\n",
+ recv_buf[0], tests[i].seq, i);
+ goto end_con;
+ }
+ }
+ if (tests[i-1].drop) {
+ printf("Error: last test cannot be DROP()\n");
+ goto end_con;
+ }
+ testresult=1;
+
+ end_con:
+ SSL_free(con);
+ end_ctx:
+ SSL_CTX_free(ctx);
+ end_md:
+ EVP_MD_CTX_free(handshake_md);
+ end:
+ ERR_print_errors_fp(stderr);
+
+ if (!testresult) {
+ printf("Cisco BadDTLS test: FAILED\n");
+ }
+
+
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
+ if (CRYPTO_mem_leaks(err) <= 0)
+ testresult = 0;
+#endif
+ BIO_free(err);
+
+ return testresult?0:1;
+}
projects / openssl.git / commitdiff