diff options
Diffstat (limited to 'openssl/ssl/d1_lib.c')
| -rw-r--r-- | openssl/ssl/d1_lib.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/openssl/ssl/d1_lib.c b/openssl/ssl/d1_lib.c new file mode 100644 index 000000000..3568e97a8 --- /dev/null +++ b/openssl/ssl/d1_lib.c @@ -0,0 +1,211 @@ +/* ssl/d1_lib.c */ +/* + * DTLS implementation written by Nagendra Modadugu + * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. + */ +/* ==================================================================== + * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include <stdio.h> +#include <openssl/objects.h> +#include "ssl_locl.h" + +const char dtls1_version_str[]="DTLSv1" OPENSSL_VERSION_PTEXT; + +SSL3_ENC_METHOD DTLSv1_enc_data={ + dtls1_enc, + tls1_mac, + tls1_setup_key_block, + tls1_generate_master_secret, + tls1_change_cipher_state, + tls1_final_finish_mac, + TLS1_FINISH_MAC_LENGTH, + tls1_cert_verify_mac, + TLS_MD_CLIENT_FINISH_CONST,TLS_MD_CLIENT_FINISH_CONST_SIZE, + TLS_MD_SERVER_FINISH_CONST,TLS_MD_SERVER_FINISH_CONST_SIZE, + tls1_alert_code, + }; + +long dtls1_default_timeout(void) + { + /* 2 hours, the 24 hours mentioned in the DTLSv1 spec + * is way too long for http, the cache would over fill */ + return(60*60*2); + } + +IMPLEMENT_dtls1_meth_func(dtlsv1_base_method, + ssl_undefined_function, + ssl_undefined_function, + ssl_bad_method) + +int dtls1_new(SSL *s) + { + DTLS1_STATE *d1; + + if (!ssl3_new(s)) return(0); + if ((d1=OPENSSL_malloc(sizeof *d1)) == NULL) return (0); + memset(d1,0, sizeof *d1); + + /* d1->handshake_epoch=0; */ +#if defined(OPENSSL_SYS_VMS) || defined(VMS_TEST) + d1->bitmap.length=64; +#else + d1->bitmap.length=sizeof(d1->bitmap.map) * 8; +#endif + pq_64bit_init(&(d1->bitmap.map)); + pq_64bit_init(&(d1->bitmap.max_seq_num)); + + d1->next_bitmap.length = d1->bitmap.length; + pq_64bit_init(&(d1->next_bitmap.map)); + pq_64bit_init(&(d1->next_bitmap.max_seq_num)); + + d1->unprocessed_rcds.q=pqueue_new(); + d1->processed_rcds.q=pqueue_new(); + d1->buffered_messages = pqueue_new(); + d1->sent_messages=pqueue_new(); + + if ( s->server) + { + d1->cookie_len = sizeof(s->d1->cookie); + } + + if( ! d1->unprocessed_rcds.q || ! d1->processed_rcds.q + || ! d1->buffered_messages || ! d1->sent_messages) + { + if ( d1->unprocessed_rcds.q) pqueue_free(d1->unprocessed_rcds.q); + if ( d1->processed_rcds.q) pqueue_free(d1->processed_rcds.q); + if ( d1->buffered_messages) pqueue_free(d1->buffered_messages); + if ( d1->sent_messages) pqueue_free(d1->sent_messages); + OPENSSL_free(d1); + return (0); + } + + s->d1=d1; + s->method->ssl_clear(s); + return(1); + } + +void dtls1_free(SSL *s) + { + pitem *item = NULL; + hm_fragment *frag = NULL; + + ssl3_free(s); + + while( (item = pqueue_pop(s->d1->unprocessed_rcds.q)) != NULL) + { + OPENSSL_free(item->data); + pitem_free(item); + } + pqueue_free(s->d1->unprocessed_rcds.q); + + while( (item = pqueue_pop(s->d1->processed_rcds.q)) != NULL) + { + OPENSSL_free(item->data); + pitem_free(item); + } + pqueue_free(s->d1->processed_rcds.q); + + while( (item = pqueue_pop(s->d1->buffered_messages)) != NULL) + { + frag = (hm_fragment *)item->data; + OPENSSL_free(frag->fragment); + OPENSSL_free(frag); + pitem_free(item); + } + pqueue_free(s->d1->buffered_messages); + + while ( (item = pqueue_pop(s->d1->sent_messages)) != NULL) + { + frag = (hm_fragment *)item->data; + OPENSSL_free(frag->fragment); + OPENSSL_free(frag); + pitem_free(item); + } + pqueue_free(s->d1->sent_messages); + + pq_64bit_free(&(s->d1->bitmap.map)); + pq_64bit_free(&(s->d1->bitmap.max_seq_num)); + + pq_64bit_free(&(s->d1->next_bitmap.map)); + pq_64bit_free(&(s->d1->next_bitmap.max_seq_num)); + + OPENSSL_free(s->d1); + } + +void dtls1_clear(SSL *s) + { + ssl3_clear(s); + s->version=DTLS1_VERSION; + } + +/* + * As it's impossible to use stream ciphers in "datagram" mode, this + * simple filter is designed to disengage them in DTLS. Unfortunately + * there is no universal way to identify stream SSL_CIPHER, so we have + * to explicitly list their SSL_* codes. Currently RC4 is the only one + * available, but if new ones emerge, they will have to be added... + */ +SSL_CIPHER *dtls1_get_cipher(unsigned int u) + { + SSL_CIPHER *ciph = ssl3_get_cipher(u); + + if (ciph != NULL) + { + if ((ciph->algorithms&SSL_ENC_MASK) == SSL_RC4) + return NULL; + } + + return ciph; + } |