/* ssl/d1_clnt.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.
* 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
* 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:
* 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
* 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
#include <stdio.h>
#include "ssl_locl.h"
#ifndef OPENSSL_NO_KRB5
-#include "kssl_lcl.h"
+# include "kssl_lcl.h"
#endif
#include <openssl/buffer.h>
#include <openssl/rand.h>
#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_client_method(int ver);
static int dtls1_get_hello_verify(SSL *s);
static const SSL_METHOD *dtls1_get_client_method(int ver)
- {
- if (ver == DTLS1_VERSION || ver == DTLS1_BAD_VER)
- return(DTLSv1_client_method());
- else
- return(NULL);
- }
+{
+ if (ver == DTLS1_VERSION || ver == DTLS1_BAD_VER)
+ return (DTLSv1_client_method());
+ else
+ return (NULL);
+}
IMPLEMENT_dtls1_meth_func(DTLSv1_client_method,
- ssl_undefined_function,
- dtls1_connect,
- dtls1_get_client_method)
+ ssl_undefined_function,
+ dtls1_connect, dtls1_get_client_method)
int dtls1_connect(SSL *s)
- {
- BUF_MEM *buf=NULL;
- unsigned long Time=(unsigned long)time(NULL);
- void (*cb)(const SSL *ssl,int type,int val)=NULL;
- int ret= -1;
- int new_state,state,skip=0;
+{
+ BUF_MEM *buf = NULL;
+ unsigned long Time = (unsigned long)time(NULL);
+ void (*cb) (const SSL *ssl, int type, int val) = NULL;
+ int ret = -1;
+ int new_state, state, skip = 0;
#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;
-
- s->in_handshake++;
- if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
+ s->in_handshake++;
+ if (!SSL_in_init(s) || SSL_in_before(s))
+ SSL_clear(s);
#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
#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_CONNECT;
- s->ctx->stats.sess_connect_renegotiate++;
- /* break */
- case SSL_ST_BEFORE:
- case SSL_ST_CONNECT:
- case SSL_ST_BEFORE|SSL_ST_CONNECT:
- case SSL_ST_OK|SSL_ST_CONNECT:
-
- s->server=0;
- if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
-
- if ((s->version & 0xff00 ) != (DTLS1_VERSION & 0xff00) &&
- (s->version & 0xff00 ) != (DTLS1_BAD_VER & 0xff00))
- {
- SSLerr(SSL_F_DTLS1_CONNECT, ERR_R_INTERNAL_ERROR);
- ret = -1;
- goto end;
- }
-
- /* s->version=SSL3_VERSION; */
- s->type=SSL_ST_CONNECT;
-
- 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))
- {
- ret= -1;
- goto end;
- }
- s->init_buf=buf;
- buf=NULL;
- }
-
- if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
-
- /* setup buffing BIO */
- if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
-
- /* don't push the buffering BIO quite yet */
-
- s->state=SSL3_ST_CW_CLNT_HELLO_A;
- s->ctx->stats.sess_connect++;
- s->init_num=0;
- /* mark client_random uninitialized */
- memset(s->s3->client_random,0,sizeof(s->s3->client_random));
- s->d1->send_cookie = 0;
- s->hit = 0;
- break;
+ for (;;) {
+ state = s->state;
+
+ switch (s->state) {
+ case SSL_ST_RENEGOTIATE:
+ s->renegotiate = 1;
+ s->state = SSL_ST_CONNECT;
+ s->ctx->stats.sess_connect_renegotiate++;
+ /* break */
+ case SSL_ST_BEFORE:
+ case SSL_ST_CONNECT:
+ case SSL_ST_BEFORE | SSL_ST_CONNECT:
+ case SSL_ST_OK | SSL_ST_CONNECT:
+
+ s->server = 0;
+ if (cb != NULL)
+ cb(s, SSL_CB_HANDSHAKE_START, 1);
+
+ if ((s->version & 0xff00) != (DTLS1_VERSION & 0xff00) &&
+ (s->version & 0xff00) != (DTLS1_BAD_VER & 0xff00)) {
+ SSLerr(SSL_F_DTLS1_CONNECT, ERR_R_INTERNAL_ERROR);
+ ret = -1;
+ goto end;
+ }
+
+ /* s->version=SSL3_VERSION; */
+ s->type = SSL_ST_CONNECT;
+
+ 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)) {
+ ret = -1;
+ goto end;
+ }
+ s->init_buf = buf;
+ buf = NULL;
+ }
+
+ if (!ssl3_setup_buffers(s)) {
+ ret = -1;
+ goto end;
+ }
+
+ /* setup buffing BIO */
+ if (!ssl_init_wbio_buffer(s, 0)) {
+ ret = -1;
+ goto end;
+ }
+
+ /* don't push the buffering BIO quite yet */
+
+ s->state = SSL3_ST_CW_CLNT_HELLO_A;
+ s->ctx->stats.sess_connect++;
+ s->init_num = 0;
+ /* mark client_random uninitialized */
+ memset(s->s3->client_random, 0, sizeof(s->s3->client_random));
+ s->d1->send_cookie = 0;
+ s->hit = 0;
+ s->d1->change_cipher_spec_ok = 0;
+ /*
+ * Should have been reset by ssl3_get_finished, too.
+ */
+ s->s3->change_cipher_spec = 0;
+ break;
#ifndef OPENSSL_NO_SCTP
- case DTLS1_SCTP_ST_CR_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=s->s3->tmp.next_state;
- break;
-
- case DTLS1_SCTP_ST_CW_WRITE_SOCK:
- /* read app data until dry event */
-
- ret = BIO_dgram_sctp_wait_for_dry(SSL_get_wbio(s));
- if (ret < 0) goto end;
-
- if (ret == 0)
- {
- 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_CR_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 = s->s3->tmp.next_state;
+ break;
+
+ case DTLS1_SCTP_ST_CW_WRITE_SOCK:
+ /* read app data until dry event */
+
+ ret = BIO_dgram_sctp_wait_for_dry(SSL_get_wbio(s));
+ if (ret < 0)
+ goto end;
+
+ if (ret == 0) {
+ 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_CW_CLNT_HELLO_A:
- case SSL3_ST_CW_CLNT_HELLO_B:
+ case SSL3_ST_CW_CLNT_HELLO_A:
+ case SSL3_ST_CW_CLNT_HELLO_B:
- s->shutdown=0;
+ s->shutdown = 0;
- /* every DTLS ClientHello resets Finished MAC */
- ssl3_init_finished_mac(s);
+ /* every DTLS ClientHello resets Finished MAC */
+ ssl3_init_finished_mac(s);
- dtls1_start_timer(s);
- ret=dtls1_client_hello(s);
- if (ret <= 0) goto end;
+ dtls1_start_timer(s);
+ ret = dtls1_client_hello(s);
+ if (ret <= 0)
+ goto end;
- if ( s->d1->send_cookie)
- {
- s->state=SSL3_ST_CW_FLUSH;
- s->s3->tmp.next_state=SSL3_ST_CR_SRVR_HELLO_A;
- }
- else
- s->state=SSL3_ST_CR_SRVR_HELLO_A;
+ if (s->d1->send_cookie) {
+ s->state = SSL3_ST_CW_FLUSH;
+ s->s3->tmp.next_state = SSL3_ST_CR_SRVR_HELLO_A;
+ } else
+ s->state = SSL3_ST_CR_SRVR_HELLO_A;
- s->init_num=0;
+ s->init_num = 0;
#ifndef OPENSSL_NO_SCTP
- /* Disable buffering for SCTP */
- if (!BIO_dgram_is_sctp(SSL_get_wbio(s)))
- {
+ /* Disable buffering for SCTP */
+ if (!BIO_dgram_is_sctp(SSL_get_wbio(s))) {
#endif
- /* turn on buffering for the next lot of output */
- if (s->bbio != s->wbio)
- s->wbio=BIO_push(s->bbio,s->wbio);
+ /*
+ * turn on buffering for the next lot of output
+ */
+ if (s->bbio != s->wbio)
+ s->wbio = BIO_push(s->bbio, s->wbio);
#ifndef OPENSSL_NO_SCTP
- }
+ }
#endif
- break;
+ break;
- case SSL3_ST_CR_SRVR_HELLO_A:
- case SSL3_ST_CR_SRVR_HELLO_B:
- ret=ssl3_get_server_hello(s);
- if (ret <= 0) goto end;
- else
- {
- if (s->hit)
- {
+ case SSL3_ST_CR_SRVR_HELLO_A:
+ case SSL3_ST_CR_SRVR_HELLO_B:
+ ret = ssl3_get_server_hello(s);
+ if (ret <= 0)
+ goto end;
+ else {
+ 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,
- 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_CR_FINISHED_A;
- }
- else
- s->state=DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A;
- }
- s->init_num=0;
- break;
-
- case DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A:
- case DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B:
-
- ret = dtls1_get_hello_verify(s);
- if ( ret <= 0)
- goto end;
- dtls1_stop_timer(s);
- if ( s->d1->send_cookie) /* start again, with a cookie */
- s->state=SSL3_ST_CW_CLNT_HELLO_A;
- else
- s->state = SSL3_ST_CR_CERT_A;
- s->init_num = 0;
- break;
-
- case SSL3_ST_CR_CERT_A:
- case SSL3_ST_CR_CERT_B:
+ s->state = SSL3_ST_CR_FINISHED_A;
+ } else
+ s->state = DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A;
+ }
+ s->init_num = 0;
+ break;
+
+ case DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A:
+ case DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B:
+
+ ret = dtls1_get_hello_verify(s);
+ if (ret <= 0)
+ goto end;
+ dtls1_stop_timer(s);
+ if (s->d1->send_cookie) /* start again, with a cookie */
+ s->state = SSL3_ST_CW_CLNT_HELLO_A;
+ else
+ s->state = SSL3_ST_CR_CERT_A;
+ s->init_num = 0;
+ break;
+
+ case SSL3_ST_CR_CERT_A:
+ case SSL3_ST_CR_CERT_B:
+ /* Check if it is anon DH or PSK */
+ if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
+ !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) {
+ ret = ssl3_get_server_certificate(s);
+ if (ret <= 0)
+ goto end;
#ifndef OPENSSL_NO_TLSEXT
- ret=ssl3_check_finished(s);
- if (ret <= 0) goto end;
- if (ret == 2)
- {
- s->hit = 1;
- if (s->tlsext_ticket_expected)
- s->state=SSL3_ST_CR_SESSION_TICKET_A;
- else
- s->state=SSL3_ST_CR_FINISHED_A;
- s->init_num=0;
- break;
- }
-#endif
- /* Check if it is anon DH or PSK */
- if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
- !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
- {
- ret=ssl3_get_server_certificate(s);
- if (ret <= 0) goto end;
-#ifndef OPENSSL_NO_TLSEXT
- if (s->tlsext_status_expected)
- s->state=SSL3_ST_CR_CERT_STATUS_A;
- else
- s->state=SSL3_ST_CR_KEY_EXCH_A;
- }
- else
- {
- skip = 1;
- s->state=SSL3_ST_CR_KEY_EXCH_A;
- }
+ if (s->tlsext_status_expected)
+ s->state = SSL3_ST_CR_CERT_STATUS_A;
+ else
+ s->state = SSL3_ST_CR_KEY_EXCH_A;
+ } else {
+ skip = 1;
+ s->state = SSL3_ST_CR_KEY_EXCH_A;
+ }
#else
- }
- else
- skip=1;
+ } else
+ skip = 1;
- s->state=SSL3_ST_CR_KEY_EXCH_A;
+ s->state = SSL3_ST_CR_KEY_EXCH_A;
#endif
- s->init_num=0;
- break;
-
- case SSL3_ST_CR_KEY_EXCH_A:
- case SSL3_ST_CR_KEY_EXCH_B:
- ret=ssl3_get_key_exchange(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CR_CERT_REQ_A;
- s->init_num=0;
-
- /* at this point we check that we have the
- * required stuff from the server */
- if (!ssl3_check_cert_and_algorithm(s))
- {
- ret= -1;
- goto end;
- }
- break;
-
- case SSL3_ST_CR_CERT_REQ_A:
- case SSL3_ST_CR_CERT_REQ_B:
- ret=ssl3_get_certificate_request(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CR_SRVR_DONE_A;
- s->init_num=0;
- break;
-
- case SSL3_ST_CR_SRVR_DONE_A:
- case SSL3_ST_CR_SRVR_DONE_B:
- ret=ssl3_get_server_done(s);
- if (ret <= 0) goto end;
- dtls1_stop_timer(s);
- if (s->s3->tmp.cert_req)
- s->s3->tmp.next_state=SSL3_ST_CW_CERT_A;
- else
- s->s3->tmp.next_state=SSL3_ST_CW_KEY_EXCH_A;
- s->init_num=0;
-
-#ifndef OPENSSL_NO_SCTP
- if (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
- state == SSL_ST_RENEGOTIATE)
- s->state=DTLS1_SCTP_ST_CR_READ_SOCK;
- else
-#endif
- s->state=s->s3->tmp.next_state;
- break;
-
- case SSL3_ST_CW_CERT_A:
- case SSL3_ST_CW_CERT_B:
- case SSL3_ST_CW_CERT_C:
- case SSL3_ST_CW_CERT_D:
- dtls1_start_timer(s);
- ret=dtls1_send_client_certificate(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CW_KEY_EXCH_A;
- s->init_num=0;
- break;
-
- case SSL3_ST_CW_KEY_EXCH_A:
- case SSL3_ST_CW_KEY_EXCH_B:
- dtls1_start_timer(s);
- ret=dtls1_send_client_key_exchange(s);
- if (ret <= 0) goto end;
+ s->init_num = 0;
+ break;
+
+ case SSL3_ST_CR_KEY_EXCH_A:
+ case SSL3_ST_CR_KEY_EXCH_B:
+ ret = ssl3_get_key_exchange(s);
+ if (ret <= 0)
+ goto end;
+ s->state = SSL3_ST_CR_CERT_REQ_A;
+ s->init_num = 0;
+
+ /*
+ * at this point we check that we have the required stuff from
+ * the server
+ */
+ if (!ssl3_check_cert_and_algorithm(s)) {
+ ret = -1;
+ goto end;
+ }
+ break;
+
+ case SSL3_ST_CR_CERT_REQ_A:
+ case SSL3_ST_CR_CERT_REQ_B:
+ ret = ssl3_get_certificate_request(s);
+ if (ret <= 0)
+ goto end;
+ s->state = SSL3_ST_CR_SRVR_DONE_A;
+ s->init_num = 0;
+ break;
+
+ case SSL3_ST_CR_SRVR_DONE_A:
+ case SSL3_ST_CR_SRVR_DONE_B:
+ ret = ssl3_get_server_done(s);
+ if (ret <= 0)
+ goto end;
+ dtls1_stop_timer(s);
+ if (s->s3->tmp.cert_req)
+ s->s3->tmp.next_state = SSL3_ST_CW_CERT_A;
+ else
+ s->s3->tmp.next_state = SSL3_ST_CW_KEY_EXCH_A;
+ s->init_num = 0;
#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);
+ if (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
+ state == SSL_ST_RENEGOTIATE)
+ s->state = DTLS1_SCTP_ST_CR_READ_SOCK;
+ else
#endif
+ s->state = s->s3->tmp.next_state;
+ break;
+
+ case SSL3_ST_CW_CERT_A:
+ case SSL3_ST_CW_CERT_B:
+ case SSL3_ST_CW_CERT_C:
+ case SSL3_ST_CW_CERT_D:
+ dtls1_start_timer(s);
+ ret = dtls1_send_client_certificate(s);
+ if (ret <= 0)
+ goto end;
+ s->state = SSL3_ST_CW_KEY_EXCH_A;
+ s->init_num = 0;
+ break;
+
+ case SSL3_ST_CW_KEY_EXCH_A:
+ case SSL3_ST_CW_KEY_EXCH_B:
+ dtls1_start_timer(s);
+ ret = dtls1_send_client_key_exchange(s);
+ if (ret <= 0)
+ goto end;
- /* EAY EAY EAY need to check for DH fix cert
- * sent back */
- /* For TLS, cert_req is set to 2, so a cert chain
- * of nothing is sent, but no verify packet is sent */
- if (s->s3->tmp.cert_req == 1)
- {
- s->state=SSL3_ST_CW_CERT_VRFY_A;
- }
- else
- {
#ifndef OPENSSL_NO_SCTP
- if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
- {
- s->d1->next_state=SSL3_ST_CW_CHANGE_A;
- s->state=DTLS1_SCTP_ST_CW_WRITE_SOCK;
- }
- else
+ /*
+ * 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_CW_CHANGE_A;
- s->s3->change_cipher_spec=0;
- }
-
- s->init_num=0;
- break;
-
- case SSL3_ST_CW_CERT_VRFY_A:
- case SSL3_ST_CW_CERT_VRFY_B:
- dtls1_start_timer(s);
- ret=dtls1_send_client_verify(s);
- if (ret <= 0) goto end;
+
+ /*
+ * EAY EAY EAY need to check for DH fix cert sent back
+ */
+ /*
+ * For TLS, cert_req is set to 2, so a cert chain of nothing is
+ * sent, but no verify packet is sent
+ */
+ if (s->s3->tmp.cert_req == 1) {
+ s->state = SSL3_ST_CW_CERT_VRFY_A;
+ } else {
#ifndef OPENSSL_NO_SCTP
- if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
- {
- s->d1->next_state=SSL3_ST_CW_CHANGE_A;
- s->state=DTLS1_SCTP_ST_CW_WRITE_SOCK;
- }
- else
+ if (BIO_dgram_is_sctp(SSL_get_wbio(s))) {
+ s->d1->next_state = SSL3_ST_CW_CHANGE_A;
+ s->state = DTLS1_SCTP_ST_CW_WRITE_SOCK;
+ } else
#endif
- s->state=SSL3_ST_CW_CHANGE_A;
- s->init_num=0;
- s->s3->change_cipher_spec=0;
- break;
-
- case SSL3_ST_CW_CHANGE_A:
- case SSL3_ST_CW_CHANGE_B:
- if (!s->hit)
- dtls1_start_timer(s);
- ret=dtls1_send_change_cipher_spec(s,
- SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
- if (ret <= 0) goto end;
-
+ s->state = SSL3_ST_CW_CHANGE_A;
+ }
+
+ s->init_num = 0;
+ break;
+
+ case SSL3_ST_CW_CERT_VRFY_A:
+ case SSL3_ST_CW_CERT_VRFY_B:
+ dtls1_start_timer(s);
+ ret = dtls1_send_client_verify(s);
+ if (ret <= 0)
+ goto end;
#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);
+ if (BIO_dgram_is_sctp(SSL_get_wbio(s))) {
+ s->d1->next_state = SSL3_ST_CW_CHANGE_A;
+ s->state = DTLS1_SCTP_ST_CW_WRITE_SOCK;
+ } else
#endif
-
- s->state=SSL3_ST_CW_FINISHED_A;
- s->init_num=0;
-
- s->session->cipher=s->s3->tmp.new_cipher;
+ s->state = SSL3_ST_CW_CHANGE_A;
+ s->init_num = 0;
+ break;
+
+ case SSL3_ST_CW_CHANGE_A:
+ case SSL3_ST_CW_CHANGE_B:
+ if (!s->hit)
+ dtls1_start_timer(s);
+ ret = dtls1_send_change_cipher_spec(s,
+ SSL3_ST_CW_CHANGE_A,
+ SSL3_ST_CW_CHANGE_B);
+ if (ret <= 0)
+ goto end;
+
+ s->state = SSL3_ST_CW_FINISHED_A;
+ s->init_num = 0;
+
+ s->session->cipher = s->s3->tmp.new_cipher;
#ifdef OPENSSL_NO_COMP
- s->session->compress_meth=0;
+ s->session->compress_meth = 0;
#else
- if (s->s3->tmp.new_compression == NULL)
- s->session->compress_meth=0;
- else
- s->session->compress_meth=
- s->s3->tmp.new_compression->id;
+ if (s->s3->tmp.new_compression == NULL)
+ s->session->compress_meth = 0;
+ else
+ s->session->compress_meth = s->s3->tmp.new_compression->id;
#endif
- if (!s->method->ssl3_enc->setup_key_block(s))
- {
- ret= -1;
- goto end;
- }
-
- if (!s->method->ssl3_enc->change_cipher_state(s,
- SSL3_CHANGE_CIPHER_CLIENT_WRITE))
- {
- ret= -1;
- goto end;
- }
-
- dtls1_reset_seq_numbers(s, SSL3_CC_WRITE);
- break;
-
- case SSL3_ST_CW_FINISHED_A:
- case SSL3_ST_CW_FINISHED_B:
- if (!s->hit)
- dtls1_start_timer(s);
- ret=dtls1_send_finished(s,
- SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
- s->method->ssl3_enc->client_finished_label,
- s->method->ssl3_enc->client_finished_label_len);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CW_FLUSH;
-
- /* clear flags */
- s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
- if (s->hit)
- {
- s->s3->tmp.next_state=SSL_ST_OK;
+ if (!s->method->ssl3_enc->setup_key_block(s)) {
+ ret = -1;
+ goto end;
+ }
+
+ if (!s->method->ssl3_enc->change_cipher_state(s,
+ SSL3_CHANGE_CIPHER_CLIENT_WRITE))
+ {
+ ret = -1;
+ goto end;
+ }
#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_CW_WRITE_SOCK;
- }
+ 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
- if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
- {
- s->state=SSL_ST_OK;
+
+ dtls1_reset_seq_numbers(s, SSL3_CC_WRITE);
+ break;
+
+ case SSL3_ST_CW_FINISHED_A:
+ case SSL3_ST_CW_FINISHED_B:
+ if (!s->hit)
+ dtls1_start_timer(s);
+ ret = dtls1_send_finished(s,
+ SSL3_ST_CW_FINISHED_A,
+ SSL3_ST_CW_FINISHED_B,
+ s->method->
+ ssl3_enc->client_finished_label,
+ s->method->
+ ssl3_enc->client_finished_label_len);
+ if (ret <= 0)
+ goto end;
+ s->state = SSL3_ST_CW_FLUSH;
+
+ /* clear flags */
+ s->s3->flags &= ~SSL3_FLAGS_POP_BUFFER;
+ if (s->hit) {
+ 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 = SSL_ST_OK;
- s->state=DTLS1_SCTP_ST_CW_WRITE_SOCK;
- }
+ 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_CW_WRITE_SOCK;
+ }
#endif
- s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
- s->s3->delay_buf_pop_ret=0;
- }
- }
- else
- {
+ if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) {
+ s->state = SSL_ST_OK;
+#ifndef OPENSSL_NO_SCTP
+ if (BIO_dgram_is_sctp(SSL_get_wbio(s))) {
+ s->d1->next_state = SSL_ST_OK;
+ s->state = DTLS1_SCTP_ST_CW_WRITE_SOCK;
+ }
+#endif
+ s->s3->flags |= SSL3_FLAGS_POP_BUFFER;
+ s->s3->delay_buf_pop_ret = 0;
+ }
+ } else {
+#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
+
#ifndef OPENSSL_NO_TLSEXT
- /* Allow NewSessionTicket if ticket expected */
- if (s->tlsext_ticket_expected)
- s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
- else
+ /*
+ * Allow NewSessionTicket if ticket expected
+ */
+ if (s->tlsext_ticket_expected)
+ s->s3->tmp.next_state = SSL3_ST_CR_SESSION_TICKET_A;
+ else
#endif
-
- s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
- }
- s->init_num=0;
- break;
+
+ s->s3->tmp.next_state = SSL3_ST_CR_FINISHED_A;
+ }
+ s->init_num = 0;
+ break;
#ifndef OPENSSL_NO_TLSEXT
- case SSL3_ST_CR_SESSION_TICKET_A:
- case SSL3_ST_CR_SESSION_TICKET_B:
- ret=ssl3_get_new_session_ticket(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CR_FINISHED_A;
- s->init_num=0;
- break;
-
- case SSL3_ST_CR_CERT_STATUS_A:
- case SSL3_ST_CR_CERT_STATUS_B:
- ret=ssl3_get_cert_status(s);
- if (ret <= 0) goto end;
- s->state=SSL3_ST_CR_KEY_EXCH_A;
- s->init_num=0;
- break;
+ case SSL3_ST_CR_SESSION_TICKET_A:
+ case SSL3_ST_CR_SESSION_TICKET_B:
+ ret = ssl3_get_new_session_ticket(s);
+ if (ret <= 0)
+ goto end;
+ s->state = SSL3_ST_CR_FINISHED_A;
+ s->init_num = 0;
+ break;
+
+ case SSL3_ST_CR_CERT_STATUS_A:
+ case SSL3_ST_CR_CERT_STATUS_B:
+ ret = ssl3_get_cert_status(s);
+ if (ret <= 0)
+ goto end;
+ s->state = SSL3_ST_CR_KEY_EXCH_A;
+ s->init_num = 0;
+ break;
#endif
- case SSL3_ST_CR_FINISHED_A:
- case SSL3_ST_CR_FINISHED_B:
- s->d1->change_cipher_spec_ok = 1;
- ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
- SSL3_ST_CR_FINISHED_B);
- if (ret <= 0) goto end;
- dtls1_stop_timer(s);
+ case SSL3_ST_CR_FINISHED_A:
+ case SSL3_ST_CR_FINISHED_B:
+ s->d1->change_cipher_spec_ok = 1;
+ ret = ssl3_get_finished(s, SSL3_ST_CR_FINISHED_A,
+ SSL3_ST_CR_FINISHED_B);
+ if (ret <= 0)
+ goto end;
+ dtls1_stop_timer(s);
- if (s->hit)
- s->state=SSL3_ST_CW_CHANGE_A;
- else
- s->state=SSL_ST_OK;
+ if (s->hit)
+ s->state = SSL3_ST_CW_CHANGE_A;
+ else
+ s->state = SSL_ST_OK;
#ifndef OPENSSL_NO_SCTP
- if (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
- state == SSL_ST_RENEGOTIATE)
- {
- s->d1->next_state=s->state;
- s->state=DTLS1_SCTP_ST_CW_WRITE_SOCK;
- }
+ if (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
+ state == SSL_ST_RENEGOTIATE) {
+ s->d1->next_state = s->state;
+ s->state = DTLS1_SCTP_ST_CW_WRITE_SOCK;
+ }
#endif
- s->init_num=0;
- break;
-
- case SSL3_ST_CW_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 SSL_ST_OK:
- /* clean a few things up */
- ssl3_cleanup_key_block(s);
+ s->init_num = 0;
+ break;
+
+ case SSL3_ST_CW_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 SSL_ST_OK:
+ /* clean a few things up */
+ ssl3_cleanup_key_block(s);
#if 0
- if (s->init_buf != NULL)
- {
- BUF_MEM_free(s->init_buf);
- s->init_buf=NULL;
- }
+ if (s->init_buf != NULL) {
+ BUF_MEM_free(s->init_buf);
+ s->init_buf = NULL;
+ }
#endif
- /* If we are not 'joining' the last two packets,
- * remove the buffering now */
- if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
- ssl_free_wbio_buffer(s);
- /* else do it later in ssl3_write */
-
- s->init_num=0;
- s->renegotiate=0;
- s->new_session=0;
-
- ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
- if (s->hit) s->ctx->stats.sess_hit++;
-
- ret=1;
- /* s->server=0; */
- s->handshake_func=dtls1_connect;
- s->ctx->stats.sess_connect_good++;
-
- if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
-
- /* done with handshaking */
- s->d1->handshake_read_seq = 0;
- s->d1->next_handshake_write_seq = 0;
- goto end;
- /* break; */
-
- default:
- SSLerr(SSL_F_DTLS1_CONNECT,SSL_R_UNKNOWN_STATE);
- ret= -1;
- goto end;
- /* break; */
- }
-
- /* did we do anything */
- 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_CONNECT_LOOP,1);
- s->state=new_state;
- }
- }
- skip=0;
- }
-end:
- s->in_handshake--;
-
+ /*
+ * If we are not 'joining' the last two packets, remove the
+ * buffering now
+ */
+ if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
+ ssl_free_wbio_buffer(s);
+ /* else do it later in ssl3_write */
+
+ s->init_num = 0;
+ s->renegotiate = 0;
+ s->new_session = 0;
+
+ ssl_update_cache(s, SSL_SESS_CACHE_CLIENT);
+ if (s->hit)
+ s->ctx->stats.sess_hit++;
+
+ ret = 1;
+ /* s->server=0; */
+ s->handshake_func = dtls1_connect;
+ s->ctx->stats.sess_connect_good++;
+
+ if (cb != NULL)
+ cb(s, SSL_CB_HANDSHAKE_DONE, 1);
+
+ /* done with handshaking */
+ s->d1->handshake_read_seq = 0;
+ s->d1->next_handshake_write_seq = 0;
+ goto end;
+ /* break; */
+
+ default:
+ SSLerr(SSL_F_DTLS1_CONNECT, SSL_R_UNKNOWN_STATE);
+ ret = -1;
+ goto end;
+ /* break; */
+ }
+
+ /* did we do anything */
+ 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_CONNECT_LOOP, 1);
+ s->state = new_state;
+ }
+ }
+ skip = 0;
+ }
+ end:
+ s->in_handshake--;
+
#ifndef OPENSSL_NO_SCTP
- /* Notify SCTP BIO socket to leave handshake
- * mode and allow 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 leave handshake mode and allow 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 (buf != NULL)
- BUF_MEM_free(buf);
- if (cb != NULL)
- cb(s,SSL_CB_CONNECT_EXIT,ret);
- return(ret);
- }
+ if (buf != NULL)
+ BUF_MEM_free(buf);
+ if (cb != NULL)
+ cb(s, SSL_CB_CONNECT_EXIT, ret);
+ return (ret);
+}
int dtls1_client_hello(SSL *s)
- {
- unsigned char *buf;
- unsigned char *p,*d;
- unsigned int i,j;
- unsigned long Time,l;
- SSL_COMP *comp;
-
- buf=(unsigned char *)s->init_buf->data;
- if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
- {
- SSL_SESSION *sess = s->session;
- if ((s->session == NULL) ||
- (s->session->ssl_version != s->version) ||
+{
+ unsigned char *buf;
+ unsigned char *p, *d;
+ unsigned int i, j;
+ unsigned long l;
+ SSL_COMP *comp;
+
+ buf = (unsigned char *)s->init_buf->data;
+ if (s->state == SSL3_ST_CW_CLNT_HELLO_A) {
+ SSL_SESSION *sess = s->session;
+ if ((s->session == NULL) || (s->session->ssl_version != s->version) ||
#ifdef OPENSSL_NO_TLSEXT
- !sess->session_id_length ||
+ !sess->session_id_length ||
#else
- (!sess->session_id_length && !sess->tlsext_tick) ||
+ (!sess->session_id_length && !sess->tlsext_tick) ||
#endif
- (s->session->not_resumable))
- {
- if (!ssl_get_new_session(s,0))
- goto err;
- }
- /* else use the pre-loaded session */
-
- p=s->s3->client_random;
-
- /* if client_random is initialized, reuse it, we are
- * required to use same upon reply to HelloVerify */
- for (i=0;p[i]=='\0' && i<sizeof(s->s3->client_random);i++) ;
- if (i==sizeof(s->s3->client_random))
- {
- Time=(unsigned long)time(NULL); /* Time */
- l2n(Time,p);
- RAND_pseudo_bytes(p,sizeof(s->s3->client_random)-4);
- }
-
- /* Do the message type and length last */
- d=p= &(buf[DTLS1_HM_HEADER_LENGTH]);
-
- *(p++)=s->version>>8;
- *(p++)=s->version&0xff;
- s->client_version=s->version;
-
- /* Random stuff */
- memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
- p+=SSL3_RANDOM_SIZE;
-
- /* Session ID */
- if (s->new_session)
- i=0;
- else
- i=s->session->session_id_length;
- *(p++)=i;
- if (i != 0)
- {
- if (i > sizeof s->session->session_id)
- {
- SSLerr(SSL_F_DTLS1_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
- goto err;
- }
- memcpy(p,s->session->session_id,i);
- p+=i;
- }
-
- /* cookie stuff */
- if ( s->d1->cookie_len > sizeof(s->d1->cookie))
- {
- SSLerr(SSL_F_DTLS1_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
- goto err;
- }
- *(p++) = s->d1->cookie_len;
- memcpy(p, s->d1->cookie, s->d1->cookie_len);
- p += s->d1->cookie_len;
-
- /* Ciphers supported */
- i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
- if (i == 0)
- {
- SSLerr(SSL_F_DTLS1_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
- goto err;
- }
- s2n(i,p);
- p+=i;
-
- /* COMPRESSION */
- if (s->ctx->comp_methods == NULL)
- j=0;
- else
- j=sk_SSL_COMP_num(s->ctx->comp_methods);
- *(p++)=1+j;
- for (i=0; i<j; i++)
- {
- comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
- *(p++)=comp->id;
- }
- *(p++)=0; /* Add the NULL method */
+ (s->session->not_resumable)) {
+ if (!ssl_get_new_session(s, 0))
+ goto err;
+ }
+ /* else use the pre-loaded session */
+
+ p = s->s3->client_random;
+
+ /*
+ * if client_random is initialized, reuse it, we are required to use
+ * same upon reply to HelloVerify
+ */
+ for (i = 0; p[i] == '\0' && i < sizeof(s->s3->client_random); i++) ;
+ if (i == sizeof(s->s3->client_random))
+ ssl_fill_hello_random(s, 0, p, sizeof(s->s3->client_random));
+
+ /* Do the message type and length last */
+ d = p = &(buf[DTLS1_HM_HEADER_LENGTH]);
+
+ *(p++) = s->version >> 8;
+ *(p++) = s->version & 0xff;
+ s->client_version = s->version;
+
+ /* Random stuff */
+ memcpy(p, s->s3->client_random, SSL3_RANDOM_SIZE);
+ p += SSL3_RANDOM_SIZE;
+
+ /* Session ID */
+ if (s->new_session)
+ i = 0;
+ else
+ i = s->session->session_id_length;
+ *(p++) = i;
+ if (i != 0) {
+ if (i > sizeof s->session->session_id) {
+ SSLerr(SSL_F_DTLS1_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+ memcpy(p, s->session->session_id, i);
+ p += i;
+ }
+
+ /* cookie stuff */
+ if (s->d1->cookie_len > sizeof(s->d1->cookie)) {
+ SSLerr(SSL_F_DTLS1_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+ *(p++) = s->d1->cookie_len;
+ memcpy(p, s->d1->cookie, s->d1->cookie_len);
+ p += s->d1->cookie_len;
+
+ /* Ciphers supported */
+ i = ssl_cipher_list_to_bytes(s, SSL_get_ciphers(s), &(p[2]), 0);
+ if (i == 0) {
+ SSLerr(SSL_F_DTLS1_CLIENT_HELLO, SSL_R_NO_CIPHERS_AVAILABLE);
+ goto err;
+ }
+ s2n(i, p);
+ p += i;
+
+ /* COMPRESSION */
+ if (s->ctx->comp_methods == NULL)
+ j = 0;
+ else
+ j = sk_SSL_COMP_num(s->ctx->comp_methods);
+ *(p++) = 1 + j;
+ for (i = 0; i < j; i++) {
+ comp = sk_SSL_COMP_value(s->ctx->comp_methods, i);
+ *(p++) = comp->id;
+ }
+ *(p++) = 0; /* Add the NULL method */
#ifndef OPENSSL_NO_TLSEXT
- if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
- {
- SSLerr(SSL_F_DTLS1_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
- goto err;
- }
-#endif
+ /* TLS extensions */
+ if (ssl_prepare_clienthello_tlsext(s) <= 0) {
+ SSLerr(SSL_F_DTLS1_CLIENT_HELLO, SSL_R_CLIENTHELLO_TLSEXT);
+ goto err;
+ }
+ if ((p =
+ ssl_add_clienthello_tlsext(s, p,
+ buf + SSL3_RT_MAX_PLAIN_LENGTH)) ==
+ NULL) {
+ SSLerr(SSL_F_DTLS1_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+#endif
- l=(p-d);
- d=buf;
+ l = (p - d);
+ d = buf;
- d = dtls1_set_message_header(s, d, SSL3_MT_CLIENT_HELLO, l, 0, l);
+ d = dtls1_set_message_header(s, d, SSL3_MT_CLIENT_HELLO, l, 0, l);
- s->state=SSL3_ST_CW_CLNT_HELLO_B;
- /* number of bytes to write */
- s->init_num=p-buf;
- s->init_off=0;
+ s->state = SSL3_ST_CW_CLNT_HELLO_B;
+ /* number of bytes to write */
+ s->init_num = p - buf;
+ s->init_off = 0;
- /* buffer the message to handle re-xmits */
- dtls1_buffer_message(s, 0);
- }
+ /* buffer the message to handle re-xmits */
+ dtls1_buffer_message(s, 0);
+ }
- /* SSL3_ST_CW_CLNT_HELLO_B */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-err:
- return(-1);
- }
+ /* SSL3_ST_CW_CLNT_HELLO_B */
+ return (dtls1_do_write(s, SSL3_RT_HANDSHAKE));
+ err:
+ return (-1);
+}
static int dtls1_get_hello_verify(SSL *s)
- {
- int n, al, ok = 0;
- unsigned char *data;
- unsigned int cookie_len;
-
- n=s->method->ssl_get_message(s,
- DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A,
- DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B,
- -1,
- s->max_cert_list,
- &ok);
-
- if (!ok) return((int)n);
-
- if (s->s3->tmp.message_type != DTLS1_MT_HELLO_VERIFY_REQUEST)
- {
- s->d1->send_cookie = 0;
- s->s3->tmp.reuse_message=1;
- return(1);
- }
-
- data = (unsigned char *)s->init_msg;
-
- if ((data[0] != (s->version>>8)) || (data[1] != (s->version&0xff)))
- {
- SSLerr(SSL_F_DTLS1_GET_HELLO_VERIFY,SSL_R_WRONG_SSL_VERSION);
- s->version=(s->version&0xff00)|data[1];
- al = SSL_AD_PROTOCOL_VERSION;
- goto f_err;
- }
- data+=2;
-
- cookie_len = *(data++);
- if ( cookie_len > sizeof(s->d1->cookie))
- {
- al=SSL_AD_ILLEGAL_PARAMETER;
- goto f_err;
- }
-
- memcpy(s->d1->cookie, data, cookie_len);
- s->d1->cookie_len = cookie_len;
-
- s->d1->send_cookie = 1;
- return 1;
-
-f_err:
- ssl3_send_alert(s, SSL3_AL_FATAL, al);
- return -1;
- }
+{
+ int n, al, ok = 0;
+ unsigned char *data;
+ unsigned int cookie_len;
+
+ n = s->method->ssl_get_message(s,
+ DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A,
+ DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B,
+ -1, s->max_cert_list, &ok);
+
+ if (!ok)
+ return ((int)n);
+
+ if (s->s3->tmp.message_type != DTLS1_MT_HELLO_VERIFY_REQUEST) {
+ s->d1->send_cookie = 0;
+ s->s3->tmp.reuse_message = 1;
+ return (1);
+ }
+
+ data = (unsigned char *)s->init_msg;
+
+ if ((data[0] != (s->version >> 8)) || (data[1] != (s->version & 0xff))) {
+ SSLerr(SSL_F_DTLS1_GET_HELLO_VERIFY, SSL_R_WRONG_SSL_VERSION);
+ s->version = (s->version & 0xff00) | data[1];
+ al = SSL_AD_PROTOCOL_VERSION;
+ goto f_err;
+ }
+ data += 2;
+
+ cookie_len = *(data++);
+ if (cookie_len > sizeof(s->d1->cookie)) {
+ al = SSL_AD_ILLEGAL_PARAMETER;
+ goto f_err;
+ }
+
+ memcpy(s->d1->cookie, data, cookie_len);
+ s->d1->cookie_len = cookie_len;
+
+ s->d1->send_cookie = 1;
+ return 1;
+
+ f_err:
+ ssl3_send_alert(s, SSL3_AL_FATAL, al);
+ return -1;
+}
int dtls1_send_client_key_exchange(SSL *s)
- {
- unsigned char *p,*d;
- int n;
- unsigned long alg_k;
+{
+ unsigned char *p, *d;
+ int n;
+ unsigned long alg_k;
#ifndef OPENSSL_NO_RSA
- unsigned char *q;
- EVP_PKEY *pkey=NULL;
+ unsigned char *q;
+ EVP_PKEY *pkey = NULL;
#endif
#ifndef OPENSSL_NO_KRB5
- KSSL_ERR kssl_err;
-#endif /* OPENSSL_NO_KRB5 */
+ KSSL_ERR kssl_err;
+#endif /* OPENSSL_NO_KRB5 */
#ifndef OPENSSL_NO_ECDH
- EC_KEY *clnt_ecdh = NULL;
- const EC_POINT *srvr_ecpoint = NULL;
- EVP_PKEY *srvr_pub_pkey = NULL;
- unsigned char *encodedPoint = NULL;
- int encoded_pt_len = 0;
- BN_CTX * bn_ctx = NULL;
+ EC_KEY *clnt_ecdh = NULL;
+ const EC_POINT *srvr_ecpoint = NULL;
+ EVP_PKEY *srvr_pub_pkey = NULL;
+ unsigned char *encodedPoint = NULL;
+ int encoded_pt_len = 0;
+ BN_CTX *bn_ctx = NULL;
#endif
- if (s->state == SSL3_ST_CW_KEY_EXCH_A)
- {
- d=(unsigned char *)s->init_buf->data;
- p= &(d[DTLS1_HM_HEADER_LENGTH]);
-
- alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
+ if (s->state == SSL3_ST_CW_KEY_EXCH_A) {
+ d = (unsigned char *)s->init_buf->data;
+ p = &(d[DTLS1_HM_HEADER_LENGTH]);
+
+ alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
- /* Fool emacs indentation */
- if (0) {}
+ /* Fool emacs indentation */
+ if (0) {
+ }
#ifndef OPENSSL_NO_RSA
- else if (alg_k & SSL_kRSA)
- {
- RSA *rsa;
- unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
-
- if (s->session->sess_cert->peer_rsa_tmp != NULL)
- rsa=s->session->sess_cert->peer_rsa_tmp;
- else
- {
- pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
- if ((pkey == NULL) ||
- (pkey->type != EVP_PKEY_RSA) ||
- (pkey->pkey.rsa == NULL))
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
- goto err;
- }
- rsa=pkey->pkey.rsa;
- EVP_PKEY_free(pkey);
- }
-
- tmp_buf[0]=s->client_version>>8;
- tmp_buf[1]=s->client_version&0xff;
- if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
- goto err;
-
- s->session->master_key_length=sizeof tmp_buf;
-
- q=p;
- /* Fix buf for TLS and [incidentally] DTLS */
- if (s->version > SSL3_VERSION)
- p+=2;
- n=RSA_public_encrypt(sizeof tmp_buf,
- tmp_buf,p,rsa,RSA_PKCS1_PADDING);
-#ifdef PKCS1_CHECK
- if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
- if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
-#endif
- if (n <= 0)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
- goto err;
- }
-
- /* Fix buf for TLS and [incidentally] DTLS */
- if (s->version > SSL3_VERSION)
- {
- s2n(n,q);
- n+=2;
- }
-
- s->session->master_key_length=
- s->method->ssl3_enc->generate_master_secret(s,
- s->session->master_key,
- tmp_buf,sizeof tmp_buf);
- OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
- }
+ else if (alg_k & SSL_kRSA) {
+ RSA *rsa;
+ unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
+
+ if (s->session->sess_cert == NULL) {
+ /*
+ * We should always have a server certificate with SSL_kRSA.
+ */
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+
+ if (s->session->sess_cert->peer_rsa_tmp != NULL)
+ rsa = s->session->sess_cert->peer_rsa_tmp;
+ else {
+ pkey =
+ X509_get_pubkey(s->session->
+ sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].
+ x509);
+ if ((pkey == NULL) || (pkey->type != EVP_PKEY_RSA)
+ || (pkey->pkey.rsa == NULL)) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+ rsa = pkey->pkey.rsa;
+ EVP_PKEY_free(pkey);
+ }
+
+ tmp_buf[0] = s->client_version >> 8;
+ tmp_buf[1] = s->client_version & 0xff;
+ if (RAND_bytes(&(tmp_buf[2]), sizeof tmp_buf - 2) <= 0)
+ goto err;
+
+ s->session->master_key_length = sizeof tmp_buf;
+
+ q = p;
+ /* Fix buf for TLS and [incidentally] DTLS */
+ if (s->version > SSL3_VERSION)
+ p += 2;
+ n = RSA_public_encrypt(sizeof tmp_buf,
+ tmp_buf, p, rsa, RSA_PKCS1_PADDING);
+# ifdef PKCS1_CHECK
+ if (s->options & SSL_OP_PKCS1_CHECK_1)
+ p[1]++;
+ if (s->options & SSL_OP_PKCS1_CHECK_2)
+ tmp_buf[0] = 0x70;
+# endif
+ if (n <= 0) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ SSL_R_BAD_RSA_ENCRYPT);
+ goto err;
+ }
+
+ /* Fix buf for TLS and [incidentally] DTLS */
+ if (s->version > SSL3_VERSION) {
+ s2n(n, q);
+ n += 2;
+ }
+
+ s->session->master_key_length =
+ s->method->ssl3_enc->generate_master_secret(s,
+ s->
+ session->master_key,
+ tmp_buf,
+ sizeof tmp_buf);
+ OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
+ }
#endif
#ifndef OPENSSL_NO_KRB5
- else if (alg_k & SSL_kKRB5)
- {
- krb5_error_code krb5rc;
- KSSL_CTX *kssl_ctx = s->kssl_ctx;
- /* krb5_data krb5_ap_req; */
- krb5_data *enc_ticket;
- krb5_data authenticator, *authp = NULL;
- EVP_CIPHER_CTX ciph_ctx;
- const EVP_CIPHER *enc = NULL;
- unsigned char iv[EVP_MAX_IV_LENGTH];
- unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
- unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
- + EVP_MAX_IV_LENGTH];
- int padl, outl = sizeof(epms);
-
- EVP_CIPHER_CTX_init(&ciph_ctx);
-
-#ifdef KSSL_DEBUG
- printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
- alg_k, SSL_kKRB5);
-#endif /* KSSL_DEBUG */
-
- authp = NULL;
-#ifdef KRB5SENDAUTH
- if (KRB5SENDAUTH) authp = &authenticator;
-#endif /* KRB5SENDAUTH */
-
- krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
- &kssl_err);
- enc = kssl_map_enc(kssl_ctx->enctype);
- if (enc == NULL)
- goto err;
-#ifdef KSSL_DEBUG
- {
- printf("kssl_cget_tkt rtn %d\n", krb5rc);
- if (krb5rc && kssl_err.text)
- printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
- }
-#endif /* KSSL_DEBUG */
-
- if (krb5rc)
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,
- SSL_AD_HANDSHAKE_FAILURE);
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
- kssl_err.reason);
- goto err;
- }
-
- /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
- ** in place of RFC 2712 KerberosWrapper, as in:
- **
- ** Send ticket (copy to *p, set n = length)
- ** n = krb5_ap_req.length;
- ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
- ** if (krb5_ap_req.data)
- ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
- **
- ** Now using real RFC 2712 KerberosWrapper
- ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
- ** Note: 2712 "opaque" types are here replaced
- ** with a 2-byte length followed by the value.
- ** Example:
- ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
- ** Where "xx xx" = length bytes. Shown here with
- ** optional authenticator omitted.
- */
-
- /* KerberosWrapper.Ticket */
- s2n(enc_ticket->length,p);
- memcpy(p, enc_ticket->data, enc_ticket->length);
- p+= enc_ticket->length;
- n = enc_ticket->length + 2;
-
- /* KerberosWrapper.Authenticator */
- if (authp && authp->length)
- {
- s2n(authp->length,p);
- memcpy(p, authp->data, authp->length);
- p+= authp->length;
- n+= authp->length + 2;
-
- free(authp->data);
- authp->data = NULL;
- authp->length = 0;
- }
- else
- {
- s2n(0,p);/* null authenticator length */
- n+=2;
- }
-
- if (RAND_bytes(tmp_buf,sizeof tmp_buf) <= 0)
- goto err;
-
- /* 20010420 VRS. Tried it this way; failed.
- ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
- ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
- ** kssl_ctx->length);
- ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
- */
-
- memset(iv, 0, sizeof iv); /* per RFC 1510 */
- EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
- kssl_ctx->key,iv);
- EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
- sizeof tmp_buf);
- EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
- outl += padl;
- if (outl > (int)sizeof epms)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
- goto err;
- }
- EVP_CIPHER_CTX_cleanup(&ciph_ctx);
-
- /* KerberosWrapper.EncryptedPreMasterSecret */
- s2n(outl,p);
- memcpy(p, epms, outl);
- p+=outl;
- n+=outl + 2;
-
- s->session->master_key_length=
- s->method->ssl3_enc->generate_master_secret(s,
- s->session->master_key,
- tmp_buf, sizeof tmp_buf);
-
- OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
- OPENSSL_cleanse(epms, outl);
- }
+ else if (alg_k & SSL_kKRB5) {
+ krb5_error_code krb5rc;
+ KSSL_CTX *kssl_ctx = s->kssl_ctx;
+ /* krb5_data krb5_ap_req; */
+ krb5_data *enc_ticket;
+ krb5_data authenticator, *authp = NULL;
+ EVP_CIPHER_CTX ciph_ctx;
+ const EVP_CIPHER *enc = NULL;
+ unsigned char iv[EVP_MAX_IV_LENGTH];
+ unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
+ unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH + EVP_MAX_IV_LENGTH];
+ int padl, outl = sizeof(epms);
+
+ EVP_CIPHER_CTX_init(&ciph_ctx);
+
+# ifdef KSSL_DEBUG
+ printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
+ alg_k, SSL_kKRB5);
+# endif /* KSSL_DEBUG */
+
+ authp = NULL;
+# ifdef KRB5SENDAUTH
+ if (KRB5SENDAUTH)
+ authp = &authenticator;
+# endif /* KRB5SENDAUTH */
+
+ krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp, &kssl_err);
+ enc = kssl_map_enc(kssl_ctx->enctype);
+ if (enc == NULL)
+ goto err;
+# ifdef KSSL_DEBUG
+ {
+ printf("kssl_cget_tkt rtn %d\n", krb5rc);
+ if (krb5rc && kssl_err.text)
+ printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
+ }
+# endif /* KSSL_DEBUG */
+
+ if (krb5rc) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, kssl_err.reason);
+ goto err;
+ }
+
+ /*-
+ * 20010406 VRS - Earlier versions used KRB5 AP_REQ
+ ** in place of RFC 2712 KerberosWrapper, as in:
+ **
+ ** Send ticket (copy to *p, set n = length)
+ ** n = krb5_ap_req.length;
+ ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
+ ** if (krb5_ap_req.data)
+ ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
+ **
+ ** Now using real RFC 2712 KerberosWrapper
+ ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
+ ** Note: 2712 "opaque" types are here replaced
+ ** with a 2-byte length followed by the value.
+ ** Example:
+ ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
+ ** Where "xx xx" = length bytes. Shown here with
+ ** optional authenticator omitted.
+ */
+
+ /* KerberosWrapper.Ticket */
+ s2n(enc_ticket->length, p);
+ memcpy(p, enc_ticket->data, enc_ticket->length);
+ p += enc_ticket->length;
+ n = enc_ticket->length + 2;
+
+ /* KerberosWrapper.Authenticator */
+ if (authp && authp->length) {
+ s2n(authp->length, p);
+ memcpy(p, authp->data, authp->length);
+ p += authp->length;
+ n += authp->length + 2;
+
+ free(authp->data);
+ authp->data = NULL;
+ authp->length = 0;
+ } else {
+ s2n(0, p); /* null authenticator length */
+ n += 2;
+ }
+
+ if (RAND_bytes(tmp_buf, sizeof tmp_buf) <= 0)
+ goto err;
+
+ /*-
+ * 20010420 VRS. Tried it this way; failed.
+ * EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
+ * EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
+ * kssl_ctx->length);
+ * EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
+ */
+
+ memset(iv, 0, sizeof iv); /* per RFC 1510 */
+ EVP_EncryptInit_ex(&ciph_ctx, enc, NULL, kssl_ctx->key, iv);
+ EVP_EncryptUpdate(&ciph_ctx, epms, &outl, tmp_buf,
+ sizeof tmp_buf);
+ EVP_EncryptFinal_ex(&ciph_ctx, &(epms[outl]), &padl);
+ outl += padl;
+ if (outl > (int)sizeof epms) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+ EVP_CIPHER_CTX_cleanup(&ciph_ctx);
+
+ /* KerberosWrapper.EncryptedPreMasterSecret */
+ s2n(outl, p);
+ memcpy(p, epms, outl);
+ p += outl;
+ n += outl + 2;
+
+ s->session->master_key_length =
+ s->method->ssl3_enc->generate_master_secret(s,
+ s->
+ session->master_key,
+ tmp_buf,
+ sizeof tmp_buf);
+
+ OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
+ OPENSSL_cleanse(epms, outl);
+ }
#endif
#ifndef OPENSSL_NO_DH
- else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
- {
- DH *dh_srvr,*dh_clnt;
-
- if (s->session->sess_cert->peer_dh_tmp != NULL)
- dh_srvr=s->session->sess_cert->peer_dh_tmp;
- else
- {
- /* we get them from the cert */
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
- goto err;
- }
-
- /* generate a new random key */
- if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
- goto err;
- }
- if (!DH_generate_key(dh_clnt))
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
- goto err;
- }
-
- /* use the 'p' output buffer for the DH key, but
- * make sure to clear it out afterwards */
-
- n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
-
- if (n <= 0)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
- goto err;
- }
-
- /* generate master key from the result */
- s->session->master_key_length=
- s->method->ssl3_enc->generate_master_secret(s,
- s->session->master_key,p,n);
- /* clean up */
- memset(p,0,n);
-
- /* send off the data */
- n=BN_num_bytes(dh_clnt->pub_key);
- s2n(n,p);
- BN_bn2bin(dh_clnt->pub_key,p);
- n+=2;
-
- DH_free(dh_clnt);
-
- /* perhaps clean things up a bit EAY EAY EAY EAY*/
- }
+ else if (alg_k & (SSL_kEDH | SSL_kDHr | SSL_kDHd)) {
+ DH *dh_srvr, *dh_clnt;
+
+ if (s->session->sess_cert == NULL) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ SSL_R_UNEXPECTED_MESSAGE);
+ goto err;
+ }
+
+ if (s->session->sess_cert->peer_dh_tmp != NULL)
+ dh_srvr = s->session->sess_cert->peer_dh_tmp;
+ else {
+ /* we get them from the cert */
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
+ goto err;
+ }
+
+ /* generate a new random key */
+ if ((dh_clnt = DHparams_dup(dh_srvr)) == NULL) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
+ goto err;
+ }
+ if (!DH_generate_key(dh_clnt)) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
+ goto err;
+ }
+
+ /*
+ * use the 'p' output buffer for the DH key, but make sure to
+ * clear it out afterwards
+ */
+
+ n = DH_compute_key(p, dh_srvr->pub_key, dh_clnt);
+
+ if (n <= 0) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
+ goto err;
+ }
+
+ /* generate master key from the result */
+ s->session->master_key_length =
+ s->method->ssl3_enc->generate_master_secret(s,
+ s->
+ session->master_key,
+ p, n);
+ /* clean up */
+ memset(p, 0, n);
+
+ /* send off the data */
+ n = BN_num_bytes(dh_clnt->pub_key);
+ s2n(n, p);
+ BN_bn2bin(dh_clnt->pub_key, p);
+ n += 2;
+
+ DH_free(dh_clnt);
+
+ /* perhaps clean things up a bit EAY EAY EAY EAY */
+ }
#endif
-#ifndef OPENSSL_NO_ECDH
- else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
- {
- const EC_GROUP *srvr_group = NULL;
- EC_KEY *tkey;
- int ecdh_clnt_cert = 0;
- int field_size = 0;
-
- /* Did we send out the client's
- * ECDH share for use in premaster
- * computation as part of client certificate?
- * If so, set ecdh_clnt_cert to 1.
- */
- if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
- {
- /* XXX: For now, we do not support client
- * authentication using ECDH certificates.
- * To add such support, one needs to add
- * code that checks for appropriate
- * conditions and sets ecdh_clnt_cert to 1.
- * For example, the cert have an ECC
- * key on the same curve as the server's
- * and the key should be authorized for
- * key agreement.
- *
- * One also needs to add code in ssl3_connect
- * to skip sending the certificate verify
- * message.
- *
- * if ((s->cert->key->privatekey != NULL) &&
- * (s->cert->key->privatekey->type ==
- * EVP_PKEY_EC) && ...)
- * ecdh_clnt_cert = 1;
- */
- }
-
- if (s->session->sess_cert->peer_ecdh_tmp != NULL)
- {
- tkey = s->session->sess_cert->peer_ecdh_tmp;
- }
- else
- {
- /* Get the Server Public Key from Cert */
- srvr_pub_pkey = X509_get_pubkey(s->session-> \
- sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
- if ((srvr_pub_pkey == NULL) ||
- (srvr_pub_pkey->type != EVP_PKEY_EC) ||
- (srvr_pub_pkey->pkey.ec == NULL))
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
- tkey = srvr_pub_pkey->pkey.ec;
- }
-
- srvr_group = EC_KEY_get0_group(tkey);
- srvr_ecpoint = EC_KEY_get0_public_key(tkey);
-
- if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
- if ((clnt_ecdh=EC_KEY_new()) == NULL)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
- goto err;
- }
- if (ecdh_clnt_cert)
- {
- /* Reuse key info from our certificate
- * We only need our private key to perform
- * the ECDH computation.
- */
- const BIGNUM *priv_key;
- tkey = s->cert->key->privatekey->pkey.ec;
- priv_key = EC_KEY_get0_private_key(tkey);
- if (priv_key == NULL)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
- goto err;
- }
- }
- else
- {
- /* Generate a new ECDH key pair */
- if (!(EC_KEY_generate_key(clnt_ecdh)))
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
- goto err;
- }
- }
-
- /* use the 'p' output buffer for the ECDH key, but
- * make sure to clear it out afterwards
- */
-
- field_size = EC_GROUP_get_degree(srvr_group);
- if (field_size <= 0)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_ECDH_LIB);
- goto err;
- }
- n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
- if (n <= 0)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_ECDH_LIB);
- goto err;
- }
-
- /* generate master key from the result */
- s->session->master_key_length = s->method->ssl3_enc \
- -> generate_master_secret(s,
- s->session->master_key,
- p, n);
-
- memset(p, 0, n); /* clean up */
-
- if (ecdh_clnt_cert)
- {
- /* Send empty client key exch message */
- n = 0;
- }
- else
- {
- /* First check the size of encoding and
- * allocate memory accordingly.
- */
- encoded_pt_len =
- EC_POINT_point2oct(srvr_group,
- EC_KEY_get0_public_key(clnt_ecdh),
- POINT_CONVERSION_UNCOMPRESSED,
- NULL, 0, NULL);
-
- encodedPoint = (unsigned char *)
- OPENSSL_malloc(encoded_pt_len *
- sizeof(unsigned char));
- bn_ctx = BN_CTX_new();
- if ((encodedPoint == NULL) ||
- (bn_ctx == NULL))
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- /* Encode the public key */
- n = EC_POINT_point2oct(srvr_group,
- EC_KEY_get0_public_key(clnt_ecdh),
- POINT_CONVERSION_UNCOMPRESSED,
- encodedPoint, encoded_pt_len, bn_ctx);
-
- *p = n; /* length of encoded point */
- /* Encoded point will be copied here */
- p += 1;
- /* copy the point */
- memcpy((unsigned char *)p, encodedPoint, n);
- /* increment n to account for length field */
- n += 1;
- }
-
- /* Free allocated memory */
- BN_CTX_free(bn_ctx);
- if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
- if (clnt_ecdh != NULL)
- EC_KEY_free(clnt_ecdh);
- EVP_PKEY_free(srvr_pub_pkey);
- }
-#endif /* !OPENSSL_NO_ECDH */
+#ifndef OPENSSL_NO_ECDH
+ else if (alg_k & (SSL_kEECDH | SSL_kECDHr | SSL_kECDHe)) {
+ const EC_GROUP *srvr_group = NULL;
+ EC_KEY *tkey;
+ int ecdh_clnt_cert = 0;
+ int field_size = 0;
+
+ if (s->session->sess_cert == NULL) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ SSL_R_UNEXPECTED_MESSAGE);
+ goto err;
+ }
+
+ /*
+ * Did we send out the client's ECDH share for use in premaster
+ * computation as part of client certificate? If so, set
+ * ecdh_clnt_cert to 1.
+ */
+ if ((alg_k & (SSL_kECDHr | SSL_kECDHe)) && (s->cert != NULL)) {
+ /*
+ * XXX: For now, we do not support client authentication
+ * using ECDH certificates. To add such support, one needs to
+ * add code that checks for appropriate conditions and sets
+ * ecdh_clnt_cert to 1. For example, the cert have an ECC key
+ * on the same curve as the server's and the key should be
+ * authorized for key agreement. One also needs to add code
+ * in ssl3_connect to skip sending the certificate verify
+ * message. if ((s->cert->key->privatekey != NULL) &&
+ * (s->cert->key->privatekey->type == EVP_PKEY_EC) && ...)
+ * ecdh_clnt_cert = 1;
+ */
+ }
+
+ if (s->session->sess_cert->peer_ecdh_tmp != NULL) {
+ tkey = s->session->sess_cert->peer_ecdh_tmp;
+ } else {
+ /* Get the Server Public Key from Cert */
+ srvr_pub_pkey =
+ X509_get_pubkey(s->session->
+ sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
+ if ((srvr_pub_pkey == NULL)
+ || (srvr_pub_pkey->type != EVP_PKEY_EC)
+ || (srvr_pub_pkey->pkey.ec == NULL)) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+
+ tkey = srvr_pub_pkey->pkey.ec;
+ }
+
+ srvr_group = EC_KEY_get0_group(tkey);
+ srvr_ecpoint = EC_KEY_get0_public_key(tkey);
+
+ if ((srvr_group == NULL) || (srvr_ecpoint == NULL)) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+
+ if ((clnt_ecdh = EC_KEY_new()) == NULL) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ if (!EC_KEY_set_group(clnt_ecdh, srvr_group)) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_EC_LIB);
+ goto err;
+ }
+ if (ecdh_clnt_cert) {
+ /*
+ * Reuse key info from our certificate We only need our
+ * private key to perform the ECDH computation.
+ */
+ const BIGNUM *priv_key;
+ tkey = s->cert->key->privatekey->pkey.ec;
+ priv_key = EC_KEY_get0_private_key(tkey);
+ if (priv_key == NULL) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if (!EC_KEY_set_private_key(clnt_ecdh, priv_key)) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_EC_LIB);
+ goto err;
+ }
+ } else {
+ /* Generate a new ECDH key pair */
+ if (!(EC_KEY_generate_key(clnt_ecdh))) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_ECDH_LIB);
+ goto err;
+ }
+ }
+
+ /*
+ * use the 'p' output buffer for the ECDH key, but make sure to
+ * clear it out afterwards
+ */
+
+ field_size = EC_GROUP_get_degree(srvr_group);
+ if (field_size <= 0) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
+ goto err;
+ }
+ n = ECDH_compute_key(p, (field_size + 7) / 8, srvr_ecpoint,
+ clnt_ecdh, NULL);
+ if (n <= 0) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
+ goto err;
+ }
+
+ /* generate master key from the result */
+ s->session->master_key_length =
+ s->method->ssl3_enc->generate_master_secret(s,
+ s->
+ session->master_key,
+ p, n);
+
+ memset(p, 0, n); /* clean up */
+
+ if (ecdh_clnt_cert) {
+ /* Send empty client key exch message */
+ n = 0;
+ } else {
+ /*
+ * First check the size of encoding and allocate memory
+ * accordingly.
+ */
+ encoded_pt_len =
+ EC_POINT_point2oct(srvr_group,
+ EC_KEY_get0_public_key(clnt_ecdh),
+ POINT_CONVERSION_UNCOMPRESSED,
+ NULL, 0, NULL);
+
+ encodedPoint = (unsigned char *)
+ OPENSSL_malloc(encoded_pt_len * sizeof(unsigned char));
+ bn_ctx = BN_CTX_new();
+ if ((encodedPoint == NULL) || (bn_ctx == NULL)) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ /* Encode the public key */
+ n = EC_POINT_point2oct(srvr_group,
+ EC_KEY_get0_public_key(clnt_ecdh),
+ POINT_CONVERSION_UNCOMPRESSED,
+ encodedPoint, encoded_pt_len, bn_ctx);
+
+ *p = n; /* length of encoded point */
+ /* Encoded point will be copied here */
+ p += 1;
+ /* copy the point */
+ memcpy((unsigned char *)p, encodedPoint, n);
+ /* increment n to account for length field */
+ n += 1;
+ }
+
+ /* Free allocated memory */
+ BN_CTX_free(bn_ctx);
+ if (encodedPoint != NULL)
+ OPENSSL_free(encodedPoint);
+ if (clnt_ecdh != NULL)
+ EC_KEY_free(clnt_ecdh);
+ EVP_PKEY_free(srvr_pub_pkey);
+ }
+#endif /* !OPENSSL_NO_ECDH */
#ifndef OPENSSL_NO_PSK
- else if (alg_k & SSL_kPSK)
- {
- char identity[PSK_MAX_IDENTITY_LEN];
- unsigned char *t = NULL;
- unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
- unsigned int pre_ms_len = 0, psk_len = 0;
- int psk_err = 1;
-
- n = 0;
- if (s->psk_client_callback == NULL)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_PSK_NO_CLIENT_CB);
- goto err;
- }
-
- psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
- identity, PSK_MAX_IDENTITY_LEN,
- psk_or_pre_ms, sizeof(psk_or_pre_ms));
- if (psk_len > PSK_MAX_PSK_LEN)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_INTERNAL_ERROR);
- goto psk_err;
- }
- else if (psk_len == 0)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
- SSL_R_PSK_IDENTITY_NOT_FOUND);
- goto psk_err;
- }
-
- /* create PSK pre_master_secret */
- pre_ms_len = 2+psk_len+2+psk_len;
- t = psk_or_pre_ms;
- memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
- s2n(psk_len, t);
- memset(t, 0, psk_len);
- t+=psk_len;
- s2n(psk_len, t);
-
- if (s->session->psk_identity_hint != NULL)
- OPENSSL_free(s->session->psk_identity_hint);
- s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
- if (s->ctx->psk_identity_hint != NULL &&
- s->session->psk_identity_hint == NULL)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_MALLOC_FAILURE);
- goto psk_err;
- }
-
- if (s->session->psk_identity != NULL)
- OPENSSL_free(s->session->psk_identity);
- s->session->psk_identity = BUF_strdup(identity);
- if (s->session->psk_identity == NULL)
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
- ERR_R_MALLOC_FAILURE);
- goto psk_err;
- }
-
- s->session->master_key_length =
- s->method->ssl3_enc->generate_master_secret(s,
- s->session->master_key,
- psk_or_pre_ms, pre_ms_len);
- n = strlen(identity);
- s2n(n, p);
- memcpy(p, identity, n);
- n+=2;
- psk_err = 0;
- psk_err:
- OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
- OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
- if (psk_err != 0)
- {
- ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
- goto err;
- }
- }
+ else if (alg_k & SSL_kPSK) {
+ char identity[PSK_MAX_IDENTITY_LEN];
+ unsigned char *t = NULL;
+ unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN * 2 + 4];
+ unsigned int pre_ms_len = 0, psk_len = 0;
+ int psk_err = 1;
+
+ n = 0;
+ if (s->psk_client_callback == NULL) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ SSL_R_PSK_NO_CLIENT_CB);
+ goto err;
+ }
+
+ psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
+ identity, PSK_MAX_IDENTITY_LEN,
+ psk_or_pre_ms,
+ sizeof(psk_or_pre_ms));
+ if (psk_len > PSK_MAX_PSK_LEN) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto psk_err;
+ } else if (psk_len == 0) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ SSL_R_PSK_IDENTITY_NOT_FOUND);
+ goto psk_err;
+ }
+
+ /* create PSK pre_master_secret */
+ pre_ms_len = 2 + psk_len + 2 + psk_len;
+ t = psk_or_pre_ms;
+ memmove(psk_or_pre_ms + psk_len + 4, psk_or_pre_ms, psk_len);
+ s2n(psk_len, t);
+ memset(t, 0, psk_len);
+ t += psk_len;
+ s2n(psk_len, t);
+
+ if (s->session->psk_identity_hint != NULL)
+ OPENSSL_free(s->session->psk_identity_hint);
+ s->session->psk_identity_hint =
+ BUF_strdup(s->ctx->psk_identity_hint);
+ if (s->ctx->psk_identity_hint != NULL
+ && s->session->psk_identity_hint == NULL) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_MALLOC_FAILURE);
+ goto psk_err;
+ }
+
+ if (s->session->psk_identity != NULL)
+ OPENSSL_free(s->session->psk_identity);
+ s->session->psk_identity = BUF_strdup(identity);
+ if (s->session->psk_identity == NULL) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_MALLOC_FAILURE);
+ goto psk_err;
+ }
+
+ s->session->master_key_length =
+ s->method->ssl3_enc->generate_master_secret(s,
+ s->
+ session->master_key,
+ psk_or_pre_ms,
+ pre_ms_len);
+ n = strlen(identity);
+ s2n(n, p);
+ memcpy(p, identity, n);
+ n += 2;
+ psk_err = 0;
+ psk_err:
+ OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
+ OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
+ if (psk_err != 0) {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+ goto err;
+ }
+ }
#endif
- else
- {
- ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
- goto err;
- }
-
- d = dtls1_set_message_header(s, d,
- SSL3_MT_CLIENT_KEY_EXCHANGE, n, 0, n);
- /*
- *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
- l2n3(n,d);
- l2n(s->d1->handshake_write_seq,d);
- s->d1->handshake_write_seq++;
- */
-
- s->state=SSL3_ST_CW_KEY_EXCH_B;
- /* number of bytes to write */
- s->init_num=n+DTLS1_HM_HEADER_LENGTH;
- s->init_off=0;
-
- /* buffer the message to handle re-xmits */
- dtls1_buffer_message(s, 0);
- }
-
- /* SSL3_ST_CW_KEY_EXCH_B */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-err:
+ else {
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
+ ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
+
+ d = dtls1_set_message_header(s, d,
+ SSL3_MT_CLIENT_KEY_EXCHANGE, n, 0, n);
+ /*-
+ *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
+ l2n3(n,d);
+ l2n(s->d1->handshake_write_seq,d);
+ s->d1->handshake_write_seq++;
+ */
+
+ s->state = SSL3_ST_CW_KEY_EXCH_B;
+ /* number of bytes to write */
+ s->init_num = n + DTLS1_HM_HEADER_LENGTH;
+ s->init_off = 0;
+
+ /* buffer the message to handle re-xmits */
+ dtls1_buffer_message(s, 0);
+ }
+
+ /* SSL3_ST_CW_KEY_EXCH_B */
+ return (dtls1_do_write(s, SSL3_RT_HANDSHAKE));
+ err:
#ifndef OPENSSL_NO_ECDH
- BN_CTX_free(bn_ctx);
- if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
- if (clnt_ecdh != NULL)
- EC_KEY_free(clnt_ecdh);
- EVP_PKEY_free(srvr_pub_pkey);
+ BN_CTX_free(bn_ctx);
+ if (encodedPoint != NULL)
+ OPENSSL_free(encodedPoint);
+ if (clnt_ecdh != NULL)
+ EC_KEY_free(clnt_ecdh);
+ EVP_PKEY_free(srvr_pub_pkey);
#endif
- return(-1);
- }
+ return (-1);
+}
int dtls1_send_client_verify(SSL *s)
- {
- unsigned char *p,*d;
- unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
- EVP_PKEY *pkey;
+{
+ unsigned char *p, *d;
+ unsigned char data[MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH];
+ EVP_PKEY *pkey;
#ifndef OPENSSL_NO_RSA
- unsigned u=0;
+ unsigned u = 0;
#endif
- unsigned long n;
+ unsigned long n;
#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
- int j;
+ int j;
#endif
- if (s->state == SSL3_ST_CW_CERT_VRFY_A)
- {
- d=(unsigned char *)s->init_buf->data;
- p= &(d[DTLS1_HM_HEADER_LENGTH]);
- pkey=s->cert->key->privatekey;
+ if (s->state == SSL3_ST_CW_CERT_VRFY_A) {
+ d = (unsigned char *)s->init_buf->data;
+ p = &(d[DTLS1_HM_HEADER_LENGTH]);
+ pkey = s->cert->key->privatekey;
- s->method->ssl3_enc->cert_verify_mac(s,
- NID_sha1,
- &(data[MD5_DIGEST_LENGTH]));
+ s->method->ssl3_enc->cert_verify_mac(s,
+ NID_sha1,
+ &(data[MD5_DIGEST_LENGTH]));
#ifndef OPENSSL_NO_RSA
- if (pkey->type == EVP_PKEY_RSA)
- {
- s->method->ssl3_enc->cert_verify_mac(s,
- NID_md5,
- &(data[0]));
- if (RSA_sign(NID_md5_sha1, data,
- MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
- &(p[2]), &u, pkey->pkey.rsa) <= 0 )
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
- goto err;
- }
- s2n(u,p);
- n=u+2;
- }
- else
+ if (pkey->type == EVP_PKEY_RSA) {
+ s->method->ssl3_enc->cert_verify_mac(s, NID_md5, &(data[0]));
+ if (RSA_sign(NID_md5_sha1, data,
+ MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH,
+ &(p[2]), &u, pkey->pkey.rsa) <= 0) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY, ERR_R_RSA_LIB);
+ goto err;
+ }
+ s2n(u, p);
+ n = u + 2;
+ } else
#endif
#ifndef OPENSSL_NO_DSA
- if (pkey->type == EVP_PKEY_DSA)
- {
- if (!DSA_sign(pkey->save_type,
- &(data[MD5_DIGEST_LENGTH]),
- SHA_DIGEST_LENGTH,&(p[2]),
- (unsigned int *)&j,pkey->pkey.dsa))
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
- goto err;
- }
- s2n(j,p);
- n=j+2;
- }
- else
+ if (pkey->type == EVP_PKEY_DSA) {
+ if (!DSA_sign(pkey->save_type,
+ &(data[MD5_DIGEST_LENGTH]),
+ SHA_DIGEST_LENGTH, &(p[2]),
+ (unsigned int *)&j, pkey->pkey.dsa)) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY, ERR_R_DSA_LIB);
+ goto err;
+ }
+ s2n(j, p);
+ n = j + 2;
+ } else
#endif
#ifndef OPENSSL_NO_ECDSA
- if (pkey->type == EVP_PKEY_EC)
- {
- if (!ECDSA_sign(pkey->save_type,
- &(data[MD5_DIGEST_LENGTH]),
- SHA_DIGEST_LENGTH,&(p[2]),
- (unsigned int *)&j,pkey->pkey.ec))
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY,
- ERR_R_ECDSA_LIB);
- goto err;
- }
- s2n(j,p);
- n=j+2;
- }
- else
+ if (pkey->type == EVP_PKEY_EC) {
+ if (!ECDSA_sign(pkey->save_type,
+ &(data[MD5_DIGEST_LENGTH]),
+ SHA_DIGEST_LENGTH, &(p[2]),
+ (unsigned int *)&j, pkey->pkey.ec)) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY, ERR_R_ECDSA_LIB);
+ goto err;
+ }
+ s2n(j, p);
+ n = j + 2;
+ } else
#endif
- {
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
- goto err;
- }
+ {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
+ goto err;
+ }
- d = dtls1_set_message_header(s, d,
- SSL3_MT_CERTIFICATE_VERIFY, n, 0, n) ;
+ d = dtls1_set_message_header(s, d,
+ SSL3_MT_CERTIFICATE_VERIFY, n, 0, n);
- s->init_num=(int)n+DTLS1_HM_HEADER_LENGTH;
- s->init_off=0;
+ s->init_num = (int)n + DTLS1_HM_HEADER_LENGTH;
+ s->init_off = 0;
- /* buffer the message to handle re-xmits */
- dtls1_buffer_message(s, 0);
+ /* buffer the message to handle re-xmits */
+ dtls1_buffer_message(s, 0);
- s->state = SSL3_ST_CW_CERT_VRFY_B;
- }
+ s->state = SSL3_ST_CW_CERT_VRFY_B;
+ }
- /* s->state = SSL3_ST_CW_CERT_VRFY_B */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-err:
- return(-1);
- }
+ /* s->state = SSL3_ST_CW_CERT_VRFY_B */
+ return (dtls1_do_write(s, SSL3_RT_HANDSHAKE));
+ err:
+ return (-1);
+}
int dtls1_send_client_certificate(SSL *s)
- {
- X509 *x509=NULL;
- EVP_PKEY *pkey=NULL;
- int i;
- unsigned long l;
-
- if (s->state == SSL3_ST_CW_CERT_A)
- {
- if ((s->cert == NULL) ||
- (s->cert->key->x509 == NULL) ||
- (s->cert->key->privatekey == NULL))
- s->state=SSL3_ST_CW_CERT_B;
- else
- s->state=SSL3_ST_CW_CERT_C;
- }
-
- /* We need to get a client cert */
- if (s->state == SSL3_ST_CW_CERT_B)
- {
- /* If we get an error, we need to
- * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
- * We then get retied later */
- i=0;
- i = ssl_do_client_cert_cb(s, &x509, &pkey);
- if (i < 0)
- {
- s->rwstate=SSL_X509_LOOKUP;
- return(-1);
- }
- s->rwstate=SSL_NOTHING;
- if ((i == 1) && (pkey != NULL) && (x509 != NULL))
- {
- s->state=SSL3_ST_CW_CERT_B;
- if ( !SSL_use_certificate(s,x509) ||
- !SSL_use_PrivateKey(s,pkey))
- i=0;
- }
- else if (i == 1)
- {
- i=0;
- SSLerr(SSL_F_DTLS1_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
- }
-
- if (x509 != NULL) X509_free(x509);
- if (pkey != NULL) EVP_PKEY_free(pkey);
- if (i == 0)
- {
- if (s->version == SSL3_VERSION)
- {
- s->s3->tmp.cert_req=0;
- ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
- return(1);
- }
- else
- {
- s->s3->tmp.cert_req=2;
- }
- }
-
- /* Ok, we have a cert */
- s->state=SSL3_ST_CW_CERT_C;
- }
-
- if (s->state == SSL3_ST_CW_CERT_C)
- {
- s->state=SSL3_ST_CW_CERT_D;
- l=dtls1_output_cert_chain(s,
- (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
- s->init_num=(int)l;
- s->init_off=0;
-
- /* set header called by dtls1_output_cert_chain() */
-
- /* buffer the message to handle re-xmits */
- dtls1_buffer_message(s, 0);
- }
- /* SSL3_ST_CW_CERT_D */
- return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
- }
-
-
+{
+ X509 *x509 = NULL;
+ EVP_PKEY *pkey = NULL;
+ int i;
+ unsigned long l;
+
+ if (s->state == SSL3_ST_CW_CERT_A) {
+ if ((s->cert == NULL) ||
+ (s->cert->key->x509 == NULL) ||
+ (s->cert->key->privatekey == NULL))
+ s->state = SSL3_ST_CW_CERT_B;
+ else
+ s->state = SSL3_ST_CW_CERT_C;
+ }
+
+ /* We need to get a client cert */
+ if (s->state == SSL3_ST_CW_CERT_B) {
+ /*
+ * If we get an error, we need to ssl->rwstate=SSL_X509_LOOKUP;
+ * return(-1); We then get retied later
+ */
+ i = 0;
+ i = ssl_do_client_cert_cb(s, &x509, &pkey);
+ if (i < 0) {
+ s->rwstate = SSL_X509_LOOKUP;
+ return (-1);
+ }
+ s->rwstate = SSL_NOTHING;
+ if ((i == 1) && (pkey != NULL) && (x509 != NULL)) {
+ s->state = SSL3_ST_CW_CERT_B;
+ if (!SSL_use_certificate(s, x509) || !SSL_use_PrivateKey(s, pkey))
+ i = 0;
+ } else if (i == 1) {
+ i = 0;
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_CERTIFICATE,
+ SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
+ }
+
+ if (x509 != NULL)
+ X509_free(x509);
+ if (pkey != NULL)
+ EVP_PKEY_free(pkey);
+ if (i == 0) {
+ if (s->version == SSL3_VERSION) {
+ s->s3->tmp.cert_req = 0;
+ ssl3_send_alert(s, SSL3_AL_WARNING, SSL_AD_NO_CERTIFICATE);
+ return (1);
+ } else {
+ s->s3->tmp.cert_req = 2;
+ }
+ }
+
+ /* Ok, we have a cert */
+ s->state = SSL3_ST_CW_CERT_C;
+ }
+
+ if (s->state == SSL3_ST_CW_CERT_C) {
+ s->state = SSL3_ST_CW_CERT_D;
+ l = dtls1_output_cert_chain(s,
+ (s->s3->tmp.cert_req ==
+ 2) ? NULL : s->cert->key->x509);
+ if (!l) {
+ SSLerr(SSL_F_DTLS1_SEND_CLIENT_CERTIFICATE, ERR_R_INTERNAL_ERROR);
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ return 0;
+ }
+ s->init_num = (int)l;
+ s->init_off = 0;
+
+ /* set header called by dtls1_output_cert_chain() */
+
+ /* buffer the message to handle re-xmits */
+ dtls1_buffer_message(s, 0);
+ }
+ /* SSL3_ST_CW_CERT_D */
+ return (dtls1_do_write(s, SSL3_RT_HANDSHAKE));
+}
projects / openssl.git / blobdiff