diff options
Diffstat (limited to 'ssl/d1_srvr.c')
-rw-r--r-- | ssl/d1_srvr.c | 1506 |
1 files changed, 763 insertions, 743 deletions
diff --git a/ssl/d1_srvr.c b/ssl/d1_srvr.c index 059385c310..0eabf41d26 100644 --- a/ssl/d1_srvr.c +++ b/ssl/d1_srvr.c @@ -1,7 +1,7 @@ /* ssl/d1_srvr.c */ -/* +/* * DTLS implementation written by Nagendra Modadugu - * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. + * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. */ /* ==================================================================== * Copyright (c) 1999-2007 The OpenSSL Project. All rights reserved. @@ -11,7 +11,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * 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 @@ -62,21 +62,21 @@ * 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: @@ -91,10 +91,10 @@ * 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 + * 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 @@ -106,7 +106,7 @@ * 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 @@ -123,815 +123,835 @@ #include <openssl/md5.h> #include <openssl/bn.h> #ifndef OPENSSL_NO_DH -#include <openssl/dh.h> +# 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 == DTLS1_VERSION) - return(DTLSv1_server_method()); - else if (ver == DTLS1_2_VERSION) - return(DTLSv1_2_server_method()); - else - return(NULL); - } +{ + 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) + 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; +{ + 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)]; + unsigned char sctpauthkey[64]; + char labelbuffer[sizeof(DTLS1_SCTP_AUTH_LABEL)]; #endif - RAND_add(&Time,sizeof(Time),0); - ERR_clear_error(); - clear_sys_error(); + 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; - 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; + listen = s->d1->listen; - /* init things to blank */ - s->in_handshake++; - if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); + /* init things to blank */ + s->in_handshake++; + if (!SSL_in_init(s) || SSL_in_before(s)) + SSL_clear(s); - s->d1->listen = listen; + 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); + /* + * 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); - } - + 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++; - } + /* + * 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; - goto end; - } - if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) - { - BUF_MEM_free(buf); - ret= -1; - goto end; - } - s->init_buf=buf; - } - - if (!ssl3_setup_buffers(s)) - { - ret= -1; - 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 :-) - */ + 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; + goto end; + } + if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH)) { + BUF_MEM_free(buf); + ret = -1; + goto end; + } + s->init_buf = buf; + } + + if (!ssl3_setup_buffers(s)) { + ret = -1; + 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))) + if (!BIO_dgram_is_sctp(SSL_get_wbio(s))) #endif - if (!ssl_init_wbio_buffer(s,1)) { ret= -1; goto end; } - - ssl3_init_finished_mac(s); - s->state=SSL3_ST_SR_CLNT_HELLO_A; - s->ctx->stats.sess_accept++; - } - 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_record_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; - - ssl3_init_finished_mac(s); - 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; - - /* Reflect ClientHello sequence to remain stateless while listening */ - if (listen) - { - memcpy(s->s3->write_sequence, s->s3->read_sequence, sizeof(s->s3->write_sequence)); - } - - /* 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) - ssl3_init_finished_mac(s); - break; - + if (!ssl_init_wbio_buffer(s, 1)) { + ret = -1; + goto end; + } + + ssl3_init_finished_mac(s); + s->state = SSL3_ST_SR_CLNT_HELLO_A; + s->ctx->stats.sess_accept++; + } 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_record_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; + + ssl3_init_finished_mac(s); + 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; + + /* + * Reflect ClientHello sequence to remain stateless while + * listening + */ + if (listen) { + memcpy(s->s3->write_sequence, s->s3->read_sequence, + sizeof(s->s3->write_sequence)); + } + + /* 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) + ssl3_init_finished_mac(s); + 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; + 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; + 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) - { + 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); - - SSL_export_keying_material(s, sctpauthkey, - sizeof(sctpauthkey), labelbuffer, - sizeof(labelbuffer), NULL, 0, 0); - - BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY, + /* + * 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); + + SSL_export_keying_material(s, sctpauthkey, + sizeof(sctpauthkey), labelbuffer, + sizeof(labelbuffer), NULL, 0, 0); + + 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; + 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; + 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; + } 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; - } + 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; + } else + skip = 1; - s->state=SSL3_ST_SW_KEY_EXCH_A; + 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 */ + 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) + || ((alg_k & SSL_kPSK) && s->ctx->psk_identity_hint) #endif - || (alg_k & (SSL_kDHE|SSL_kDHr|SSL_kDHd)) - || (alg_k & SSL_kECDHE) - || ((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; + || (alg_k & (SSL_kDHE | SSL_kDHr | SSL_kDHd)) + || (alg_k & SSL_kECDHE) + || ((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; - } + 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; + } 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 + 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 + 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; + 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); - - SSL_export_keying_material(s, sctpauthkey, - sizeof(sctpauthkey), labelbuffer, - sizeof(labelbuffer), NULL, 0, 0); - - BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY, - sizeof(sctpauthkey), sctpauthkey); + /* + * 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); + + SSL_export_keying_material(s, sctpauthkey, + sizeof(sctpauthkey), labelbuffer, + sizeof(labelbuffer), NULL, 0, 0); + + 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 |