diff options
Diffstat (limited to 'ssl/d1_srvr.c')
| -rw-r--r-- | ssl/d1_srvr.c | 985 |
1 files changed, 0 insertions, 985 deletions
diff --git a/ssl/d1_srvr.c b/ssl/d1_srvr.c deleted file mode 100644 index 8502b242e51c..000000000000 --- a/ssl/d1_srvr.c +++ /dev/null @@ -1,985 +0,0 @@ -/* ssl/d1_srvr.c */ -/* - * DTLS implementation written by Nagendra Modadugu - * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. - */ -/* ==================================================================== - * Copyright (c) 1999-2007 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * openssl-core@OpenSSL.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). - * - */ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * All rights reserved. - * - * This package is an SSL implementation written - * by Eric Young (eay@cryptsoft.com). - * The implementation was written so as to conform with Netscapes SSL. - * - * This library is free for commercial and non-commercial use as long as - * the following conditions are aheared to. The following conditions - * apply to all code found in this distribution, be it the RC4, RSA, - * lhash, DES, etc., code; not just the SSL code. The SSL documentation - * included with this distribution is covered by the same copyright terms - * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * - * Copyright remains Eric Young's, and as such any Copyright notices in - * the code are not to be removed. - * If this package is used in a product, Eric Young should be given attribution - * as the author of the parts of the library used. - * This can be in the form of a textual message at program startup or - * in documentation (online or textual) provided with the package. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * "This product includes cryptographic software written by - * Eric Young (eay@cryptsoft.com)" - * The word 'cryptographic' can be left out if the rouines from the library - * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from - * the apps directory (application code) you must include an acknowledgement: - * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * - * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * The licence and distribution terms for any publically available version or - * derivative of this code cannot be changed. i.e. this code cannot simply be - * copied and put under another distribution licence - * [including the GNU Public Licence.] - */ - -#include <stdio.h> -#include "ssl_locl.h" -#include <openssl/buffer.h> -#include <openssl/rand.h> -#include <openssl/objects.h> -#include <openssl/evp.h> -#include <openssl/x509.h> -#include <openssl/md5.h> -#include <openssl/bn.h> -#ifndef OPENSSL_NO_DH -# include <openssl/dh.h> -#endif - -static const SSL_METHOD *dtls1_get_server_method(int ver); -static int dtls1_send_hello_verify_request(SSL *s); - -static const SSL_METHOD *dtls1_get_server_method(int ver) -{ - if (ver == DTLS_ANY_VERSION) - return DTLS_server_method(); - else if (ver == DTLS1_VERSION) - return DTLSv1_server_method(); - else if (ver == DTLS1_2_VERSION) - return DTLSv1_2_server_method(); - else - return NULL; -} - -IMPLEMENT_dtls1_meth_func(DTLS1_VERSION, - DTLSv1_server_method, - dtls1_accept, - ssl_undefined_function, - dtls1_get_server_method, DTLSv1_enc_data) - -IMPLEMENT_dtls1_meth_func(DTLS1_2_VERSION, - DTLSv1_2_server_method, - dtls1_accept, - ssl_undefined_function, - dtls1_get_server_method, DTLSv1_2_enc_data) - -IMPLEMENT_dtls1_meth_func(DTLS_ANY_VERSION, - DTLS_server_method, - dtls1_accept, - ssl_undefined_function, - dtls1_get_server_method, DTLSv1_2_enc_data) - -int dtls1_accept(SSL *s) -{ - BUF_MEM *buf; - unsigned long Time = (unsigned long)time(NULL); - void (*cb) (const SSL *ssl, int type, int val) = NULL; - unsigned long alg_k; - int ret = -1; - int new_state, state, skip = 0; - int listen; -#ifndef OPENSSL_NO_SCTP - unsigned char sctpauthkey[64]; - char labelbuffer[sizeof(DTLS1_SCTP_AUTH_LABEL)]; -#endif - - RAND_add(&Time, sizeof(Time), 0); - ERR_clear_error(); - clear_sys_error(); - - if (s->info_callback != NULL) - cb = s->info_callback; - else if (s->ctx->info_callback != NULL) - cb = s->ctx->info_callback; - - listen = s->d1->listen; - - /* init things to blank */ - s->in_handshake++; - if (!SSL_in_init(s) || SSL_in_before(s)) - SSL_clear(s); - - s->d1->listen = listen; -#ifndef OPENSSL_NO_SCTP - /* - * Notify SCTP BIO socket to enter handshake mode and prevent stream - * identifier other than 0. Will be ignored if no SCTP is used. - */ - BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE, - s->in_handshake, NULL); -#endif - - if (s->cert == NULL) { - SSLerr(SSL_F_DTLS1_ACCEPT, SSL_R_NO_CERTIFICATE_SET); - return (-1); - } -#ifndef OPENSSL_NO_HEARTBEATS - /* - * If we're awaiting a HeartbeatResponse, pretend we already got and - * don't await it anymore, because Heartbeats don't make sense during - * handshakes anyway. - */ - if (s->tlsext_hb_pending) { - dtls1_stop_timer(s); - s->tlsext_hb_pending = 0; - s->tlsext_hb_seq++; - } -#endif - - for (;;) { - state = s->state; - - switch (s->state) { - case SSL_ST_RENEGOTIATE: - s->renegotiate = 1; - /* s->state=SSL_ST_ACCEPT; */ - - case SSL_ST_BEFORE: - case SSL_ST_ACCEPT: - case SSL_ST_BEFORE | SSL_ST_ACCEPT: - case SSL_ST_OK | SSL_ST_ACCEPT: - - s->server = 1; - if (cb != NULL) - cb(s, SSL_CB_HANDSHAKE_START, 1); - - if ((s->version & 0xff00) != (DTLS1_VERSION & 0xff00)) { - SSLerr(SSL_F_DTLS1_ACCEPT, ERR_R_INTERNAL_ERROR); - return -1; - } - s->type = SSL_ST_ACCEPT; - - if (s->init_buf == NULL) { - if ((buf = BUF_MEM_new()) == NULL) { - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } - if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH)) { - BUF_MEM_free(buf); - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } - s->init_buf = buf; - } - - if (!ssl3_setup_buffers(s)) { - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } - - s->init_num = 0; - s->d1->change_cipher_spec_ok = 0; - /* - * Should have been reset by ssl3_get_finished, too. - */ - s->s3->change_cipher_spec = 0; - - if (s->state != SSL_ST_RENEGOTIATE) { - /* - * Ok, we now need to push on a buffering BIO so that the - * output is sent in a way that TCP likes :-) ...but not with - * SCTP :-) - */ -#ifndef OPENSSL_NO_SCTP - if (!BIO_dgram_is_sctp(SSL_get_wbio(s))) -#endif - if (!ssl_init_wbio_buffer(s, 1)) { - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } - - if (!ssl3_init_finished_mac(s)) { - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } - - s->state = SSL3_ST_SR_CLNT_HELLO_A; - s->ctx->stats.sess_accept++; - } else if (!s->s3->send_connection_binding && - !(s->options & - SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION)) { - /* - * Server attempting to renegotiate with client that doesn't - * support secure renegotiation. - */ - SSLerr(SSL_F_DTLS1_ACCEPT, - SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED); - ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } else { - /* - * s->state == SSL_ST_RENEGOTIATE, we will just send a - * HelloRequest - */ - s->ctx->stats.sess_accept_renegotiate++; - s->state = SSL3_ST_SW_HELLO_REQ_A; - } - - break; - - case SSL3_ST_SW_HELLO_REQ_A: - case SSL3_ST_SW_HELLO_REQ_B: - - s->shutdown = 0; - dtls1_clear_sent_buffer(s); - dtls1_start_timer(s); - ret = ssl3_send_hello_request(s); - if (ret <= 0) - goto end; - s->s3->tmp.next_state = SSL3_ST_SR_CLNT_HELLO_A; - s->state = SSL3_ST_SW_FLUSH; - s->init_num = 0; - - if (!ssl3_init_finished_mac(s)) { - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } - break; - - case SSL3_ST_SW_HELLO_REQ_C: - s->state = SSL_ST_OK; - break; - - case SSL3_ST_SR_CLNT_HELLO_A: - case SSL3_ST_SR_CLNT_HELLO_B: - case SSL3_ST_SR_CLNT_HELLO_C: - - s->shutdown = 0; - ret = ssl3_get_client_hello(s); - if (ret <= 0) - goto end; - dtls1_stop_timer(s); - - if (ret == 1 && (SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE)) - s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A; - else - s->state = SSL3_ST_SW_SRVR_HELLO_A; - - s->init_num = 0; - - /* If we're just listening, stop here */ - if (listen && s->state == SSL3_ST_SW_SRVR_HELLO_A) { - ret = 2; - s->d1->listen = 0; - /* - * Set expected sequence numbers to continue the handshake. - */ - s->d1->handshake_read_seq = 2; - s->d1->handshake_write_seq = 1; - s->d1->next_handshake_write_seq = 1; - goto end; - } - - break; - - case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A: - case DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B: - - ret = dtls1_send_hello_verify_request(s); - if (ret <= 0) - goto end; - s->state = SSL3_ST_SW_FLUSH; - s->s3->tmp.next_state = SSL3_ST_SR_CLNT_HELLO_A; - - /* HelloVerifyRequest resets Finished MAC */ - if (s->version != DTLS1_BAD_VER) - if (!ssl3_init_finished_mac(s)) { - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } - break; - -#ifndef OPENSSL_NO_SCTP - case DTLS1_SCTP_ST_SR_READ_SOCK: - - if (BIO_dgram_sctp_msg_waiting(SSL_get_rbio(s))) { - s->s3->in_read_app_data = 2; - s->rwstate = SSL_READING; - BIO_clear_retry_flags(SSL_get_rbio(s)); - BIO_set_retry_read(SSL_get_rbio(s)); - ret = -1; - goto end; - } - - s->state = SSL3_ST_SR_FINISHED_A; - break; - - case DTLS1_SCTP_ST_SW_WRITE_SOCK: - ret = BIO_dgram_sctp_wait_for_dry(SSL_get_wbio(s)); - if (ret < 0) - goto end; - - if (ret == 0) { - if (s->d1->next_state != SSL_ST_OK) { - s->s3->in_read_app_data = 2; - s->rwstate = SSL_READING; - BIO_clear_retry_flags(SSL_get_rbio(s)); - BIO_set_retry_read(SSL_get_rbio(s)); - ret = -1; - goto end; - } - } - - s->state = s->d1->next_state; - break; -#endif - - case SSL3_ST_SW_SRVR_HELLO_A: - case SSL3_ST_SW_SRVR_HELLO_B: - s->renegotiate = 2; - dtls1_start_timer(s); - ret = ssl3_send_server_hello(s); - if (ret <= 0) - goto end; - - if (s->hit) { -#ifndef OPENSSL_NO_SCTP - /* - * Add new shared key for SCTP-Auth, will be ignored if no - * SCTP used. - */ - snprintf((char *)labelbuffer, sizeof(DTLS1_SCTP_AUTH_LABEL), - DTLS1_SCTP_AUTH_LABEL); - - if (SSL_export_keying_material(s, sctpauthkey, - sizeof(sctpauthkey), labelbuffer, - sizeof(labelbuffer), NULL, 0, 0) <= 0) { - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } - - BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY, - sizeof(sctpauthkey), sctpauthkey); -#endif -#ifndef OPENSSL_NO_TLSEXT - if (s->tlsext_ticket_expected) - s->state = SSL3_ST_SW_SESSION_TICKET_A; - else - s->state = SSL3_ST_SW_CHANGE_A; -#else - s->state = SSL3_ST_SW_CHANGE_A; -#endif - } else - s->state = SSL3_ST_SW_CERT_A; - s->init_num = 0; - break; - - case SSL3_ST_SW_CERT_A: - case SSL3_ST_SW_CERT_B: - /* Check if it is anon DH or normal PSK */ - if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) - && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) { - dtls1_start_timer(s); - ret = ssl3_send_server_certificate(s); - if (ret <= 0) - goto end; -#ifndef OPENSSL_NO_TLSEXT - if (s->tlsext_status_expected) - s->state = SSL3_ST_SW_CERT_STATUS_A; - else - s->state = SSL3_ST_SW_KEY_EXCH_A; - } else { - skip = 1; - s->state = SSL3_ST_SW_KEY_EXCH_A; - } -#else - } else - skip = 1; - - s->state = SSL3_ST_SW_KEY_EXCH_A; -#endif - s->init_num = 0; - break; - - case SSL3_ST_SW_KEY_EXCH_A: - case SSL3_ST_SW_KEY_EXCH_B: - alg_k = s->s3->tmp.new_cipher->algorithm_mkey; - - /* - * clear this, it may get reset by - * send_server_key_exchange - */ - s->s3->tmp.use_rsa_tmp = 0; - - /* - * only send if a DH key exchange or RSA but we have a sign only - * certificate - */ - if (0 - /* - * PSK: send ServerKeyExchange if PSK identity hint if - * provided - */ -#ifndef OPENSSL_NO_PSK - || ((alg_k & SSL_kPSK) && s->ctx->psk_identity_hint) -#endif - || (alg_k & SSL_kDHE) - || (alg_k & SSL_kEECDH) - || ((alg_k & SSL_kRSA) - && (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL - || (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) - && EVP_PKEY_size(s->cert->pkeys - [SSL_PKEY_RSA_ENC].privatekey) * - 8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher) - ) - ) - ) - ) { - dtls1_start_timer(s); - ret = ssl3_send_server_key_exchange(s); - if (ret <= 0) - goto end; - } else - skip = 1; - - s->state = SSL3_ST_SW_CERT_REQ_A; - s->init_num = 0; - break; - - case SSL3_ST_SW_CERT_REQ_A: - case SSL3_ST_SW_CERT_REQ_B: - if ( /* don't request cert unless asked for it: */ - !(s->verify_mode & SSL_VERIFY_PEER) || - /* - * if SSL_VERIFY_CLIENT_ONCE is set, don't request cert - * during re-negotiation: - */ - ((s->session->peer != NULL) && - (s->verify_mode & SSL_VERIFY_CLIENT_ONCE)) || - /* - * never request cert in anonymous ciphersuites (see - * section "Certificate request" in SSL 3 drafts and in - * RFC 2246): - */ - ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) && - /* - * ... except when the application insists on - * verification (against the specs, but s3_clnt.c accepts - * this for SSL 3) - */ - !(s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)) || - /* - * never request cert in Kerberos ciphersuites - */ - (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) - /* - * With normal PSK Certificates and Certificate Requests - * are omitted - */ - || (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) { - /* no cert request */ - skip = 1; - s->s3->tmp.cert_request = 0; - s->state = SSL3_ST_SW_SRVR_DONE_A; -#ifndef OPENSSL_NO_SCTP - if (BIO_dgram_is_sctp(SSL_get_wbio(s))) { - s->d1->next_state = SSL3_ST_SW_SRVR_DONE_A; - s->state = DTLS1_SCTP_ST_SW_WRITE_SOCK; - } -#endif - } else { - s->s3->tmp.cert_request = 1; - dtls1_start_timer(s); - ret = ssl3_send_certificate_request(s); - if (ret <= 0) - goto end; -#ifndef NETSCAPE_HANG_BUG - s->state = SSL3_ST_SW_SRVR_DONE_A; -# ifndef OPENSSL_NO_SCTP - if (BIO_dgram_is_sctp(SSL_get_wbio(s))) { - s->d1->next_state = SSL3_ST_SW_SRVR_DONE_A; - s->state = DTLS1_SCTP_ST_SW_WRITE_SOCK; - } -# endif -#else - s->state = SSL3_ST_SW_FLUSH; - s->s3->tmp.next_state = SSL3_ST_SR_CERT_A; -# ifndef OPENSSL_NO_SCTP - if (BIO_dgram_is_sctp(SSL_get_wbio(s))) { - s->d1->next_state = s->s3->tmp.next_state; - s->s3->tmp.next_state = DTLS1_SCTP_ST_SW_WRITE_SOCK; - } -# endif -#endif - s->init_num = 0; - } - break; - - case SSL3_ST_SW_SRVR_DONE_A: - case SSL3_ST_SW_SRVR_DONE_B: - dtls1_start_timer(s); - ret = ssl3_send_server_done(s); - if (ret <= 0) - goto end; - s->s3->tmp.next_state = SSL3_ST_SR_CERT_A; - s->state = SSL3_ST_SW_FLUSH; - s->init_num = 0; - break; - - case SSL3_ST_SW_FLUSH: - s->rwstate = SSL_WRITING; - if (BIO_flush(s->wbio) <= 0) { - /* - * If the write error was fatal, stop trying - */ - if (!BIO_should_retry(s->wbio)) { - s->rwstate = SSL_NOTHING; - s->state = s->s3->tmp.next_state; - } - - ret = -1; - goto end; - } - s->rwstate = SSL_NOTHING; - s->state = s->s3->tmp.next_state; - break; - - case SSL3_ST_SR_CERT_A: - case SSL3_ST_SR_CERT_B: - if (s->s3->tmp.cert_request) { - ret = ssl3_get_client_certificate(s); - if (ret <= 0) - goto end; - } - s->init_num = 0; - s->state = SSL3_ST_SR_KEY_EXCH_A; - break; - - case SSL3_ST_SR_KEY_EXCH_A: - case SSL3_ST_SR_KEY_EXCH_B: - ret = ssl3_get_client_key_exchange(s); - if (ret <= 0) - goto end; -#ifndef OPENSSL_NO_SCTP - /* - * Add new shared key for SCTP-Auth, will be ignored if no SCTP - * used. - */ - snprintf((char *)labelbuffer, sizeof(DTLS1_SCTP_AUTH_LABEL), - DTLS1_SCTP_AUTH_LABEL); - - if (SSL_export_keying_material(s, sctpauthkey, - sizeof(sctpauthkey), labelbuffer, - sizeof(labelbuffer), NULL, 0, 0) <= 0) { - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } - - BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY, - sizeof(sctpauthkey), sctpauthkey); -#endif - - s->state = SSL3_ST_SR_CERT_VRFY_A; - s->init_num = 0; - - if (ret == 2) { - /* - * For the ECDH ciphersuites when the client sends its ECDH - * pub key in a certificate, the CertificateVerify message is - * not sent. - */ - s->state = SSL3_ST_SR_FINISHED_A; - s->init_num = 0; - } else if (SSL_USE_SIGALGS(s)) { - s->state = SSL3_ST_SR_CERT_VRFY_A; - s->init_num = 0; - if (!s->session->peer) - break; - /* - * For sigalgs freeze the handshake buffer at this point and - * digest cached records. - */ - if (!s->s3->handshake_buffer) { - SSLerr(SSL_F_DTLS1_ACCEPT, ERR_R_INTERNAL_ERROR); - s->state = SSL_ST_ERR; - return -1; - } - s->s3->flags |= TLS1_FLAGS_KEEP_HANDSHAKE; - if (!ssl3_digest_cached_records(s)) { - s->state = SSL_ST_ERR; - return -1; - } - } else { - s->state = SSL3_ST_SR_CERT_VRFY_A; - s->init_num = 0; - - /* - * We need to get hashes here so if there is a client cert, - * it can be verified - */ - s->method->ssl3_enc->cert_verify_mac(s, - NID_md5, - &(s->s3-> - tmp.cert_verify_md - [0])); - s->method->ssl3_enc->cert_verify_mac(s, NID_sha1, - &(s->s3-> - tmp.cert_verify_md - [MD5_DIGEST_LENGTH])); - } - break; - - case SSL3_ST_SR_CERT_VRFY_A: - case SSL3_ST_SR_CERT_VRFY_B: - ret = ssl3_get_cert_verify(s); - if (ret <= 0) - goto end; -#ifndef OPENSSL_NO_SCTP - if (BIO_dgram_is_sctp(SSL_get_wbio(s)) && - state == SSL_ST_RENEGOTIATE) - s->state = DTLS1_SCTP_ST_SR_READ_SOCK; - else -#endif - s->state = SSL3_ST_SR_FINISHED_A; - s->init_num = 0; - break; - - case SSL3_ST_SR_FINISHED_A: - case SSL3_ST_SR_FINISHED_B: - /* - * Enable CCS. Receiving a CCS clears the flag, so make - * sure not to re-enable it to ban duplicates. This *should* be the - * first time we have received one - but we check anyway to be - * cautious. - * s->s3->change_cipher_spec is set when a CCS is - * processed in d1_pkt.c, and remains set until - * the client's Finished message is read. - */ - if (!s->s3->change_cipher_spec) - s->d1->change_cipher_spec_ok = 1; - ret = ssl3_get_finished(s, SSL3_ST_SR_FINISHED_A, - SSL3_ST_SR_FINISHED_B); - if (ret <= 0) - goto end; - dtls1_stop_timer(s); - if (s->hit) - s->state = SSL_ST_OK; -#ifndef OPENSSL_NO_TLSEXT - else if (s->tlsext_ticket_expected) - s->state = SSL3_ST_SW_SESSION_TICKET_A; -#endif - else - s->state = SSL3_ST_SW_CHANGE_A; - s->init_num = 0; - break; - -#ifndef OPENSSL_NO_TLSEXT - case SSL3_ST_SW_SESSION_TICKET_A: - case SSL3_ST_SW_SESSION_TICKET_B: - ret = ssl3_send_newsession_ticket(s); - if (ret <= 0) - goto end; - s->state = SSL3_ST_SW_CHANGE_A; - s->init_num = 0; - break; - - case SSL3_ST_SW_CERT_STATUS_A: - case SSL3_ST_SW_CERT_STATUS_B: - ret = ssl3_send_cert_status(s); - if (ret <= 0) - goto end; - s->state = SSL3_ST_SW_KEY_EXCH_A; - s->init_num = 0; - break; - -#endif - - case SSL3_ST_SW_CHANGE_A: - case SSL3_ST_SW_CHANGE_B: - - s->session->cipher = s->s3->tmp.new_cipher; - if (!s->method->ssl3_enc->setup_key_block(s)) { - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } - - ret = dtls1_send_change_cipher_spec(s, - SSL3_ST_SW_CHANGE_A, - SSL3_ST_SW_CHANGE_B); - - if (ret <= 0) - goto end; - -#ifndef OPENSSL_NO_SCTP - if (!s->hit) { - /* - * Change to new shared key of SCTP-Auth, will be ignored if - * no SCTP used. - */ - BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY, - 0, NULL); - } -#endif - - s->state = SSL3_ST_SW_FINISHED_A; - s->init_num = 0; - - if (!s->method->ssl3_enc->change_cipher_state(s, - SSL3_CHANGE_CIPHER_SERVER_WRITE)) - { - ret = -1; - s->state = SSL_ST_ERR; - goto end; - } - - dtls1_reset_seq_numbers(s, SSL3_CC_WRITE); - break; - - case SSL3_ST_SW_FINISHED_A: - case SSL3_ST_SW_FINISHED_B: - ret = ssl3_send_finished(s, - SSL3_ST_SW_FINISHED_A, - SSL3_ST_SW_FINISHED_B, - s->method-> - ssl3_enc->server_finished_label, - s->method-> - ssl3_enc->server_finished_label_len); - if (ret <= 0) - goto end; - s->state = SSL3_ST_SW_FLUSH; - if (s->hit) { - s->s3->tmp.next_state = SSL3_ST_SR_FINISHED_A; - -#ifndef OPENSSL_NO_SCTP - /* - * Change to new shared key of SCTP-Auth, will be ignored if - * no SCTP used. - */ - BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY, - 0, NULL); -#endif - } else { - s->s3->tmp.next_state = SSL_ST_OK; -#ifndef OPENSSL_NO_SCTP - if (BIO_dgram_is_sctp(SSL_get_wbio(s))) { - s->d1->next_state = s->s3->tmp.next_state; - s->s3->tmp.next_state = DTLS1_SCTP_ST_SW_WRITE_SOCK; - } -#endif - } - s->init_num = 0; - break; - - case SSL_ST_OK: - /* clean a few things up */ - ssl3_cleanup_key_block(s); - -#if 0 - BUF_MEM_free(s->init_buf); - s->init_buf = NULL; -#endif - - /* remove buffering on output */ - ssl_free_wbio_buffer(s); - - s->init_num = 0; - - if (s->renegotiate == 2) { /* skipped if we just sent a - * HelloRequest */ - s->renegotiate = 0; - s->new_session = 0; - - ssl_update_cache(s, SSL_SESS_CACHE_SERVER); - - s->ctx->stats.sess_accept_good++; - /* s->server=1; */ - s->handshake_func = dtls1_accept; - - if (cb != NULL) - cb(s, SSL_CB_HANDSHAKE_DONE, 1); - } - - ret = 1; - - /* done handshaking, next message is client hello */ - s->d1->handshake_read_seq = 0; - /* next message is server hello */ - s->d1->handshake_write_seq = 0; - s->d1->next_handshake_write_seq = 0; - dtls1_clear_received_buffer(s); - goto end; - /* break; */ - - case SSL_ST_ERR: - default: - SSLerr(SSL_F_DTLS1_ACCEPT, SSL_R_UNKNOWN_STATE); - ret = -1; - goto end; - /* break; */ - } - - if (!s->s3->tmp.reuse_message && !skip) { - if (s->debug) { - if ((ret = BIO_flush(s->wbio)) <= 0) - goto end; - } - - if ((cb != NULL) && (s->state != state)) { - new_state = s->state; - s->state = state; - cb(s, SSL_CB_ACCEPT_LOOP, 1); - s->state = new_state; - } - } - skip = 0; - } - end: - /* BIO_flush(s->wbio); */ - - s->in_handshake--; -#ifndef OPENSSL_NO_SCTP - /* - * Notify SCTP BIO socket to leave handshake mode and prevent stream - * identifier other than 0. Will be ignored if no SCTP is used. - */ - BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE, - s->in_handshake, NULL); -#endif - - if (cb != NULL) - cb(s, SSL_CB_ACCEPT_EXIT, ret); - return (ret); -} - -int dtls1_send_hello_verify_request(SSL *s) -{ - unsigned int msg_len; - unsigned char *msg, *buf, *p; - - if (s->state == DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A) { - buf = (unsigned char *)s->init_buf->data; - - msg = p = &(buf[DTLS1_HM_HEADER_LENGTH]); - /* Always use DTLS 1.0 version: see RFC 6347 */ - *(p++) = DTLS1_VERSION >> 8; - *(p++) = DTLS1_VERSION & 0xFF; - - if (s->ctx->app_gen_cookie_cb == NULL || - s->ctx->app_gen_cookie_cb(s, s->d1->cookie, - &(s->d1->cookie_len)) == 0) { - SSLerr(SSL_F_DTLS1_SEND_HELLO_VERIFY_REQUEST, - ERR_R_INTERNAL_ERROR); - s->state = SSL_ST_ERR; - return 0; - } - - *(p++) = (unsigned char)s->d1->cookie_len; - memcpy(p, s->d1->cookie, s->d1->cookie_len); - p += s->d1->cookie_len; - msg_len = p - msg; - - dtls1_set_message_header(s, buf, - DTLS1_MT_HELLO_VERIFY_REQUEST, msg_len, 0, - msg_len); - - s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B; - /* number of bytes to write */ - s->init_num = p - buf; - s->init_off = 0; - } - - /* s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B */ - return (dtls1_do_write(s, SSL3_RT_HANDSHAKE)); -} |