-/* ssl/t1_lib.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved.
*
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
-/* ====================================================================
- * Copyright (c) 1998-2006 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).
+
+/*
+ * DTLS code by Eric Rescorla <ekr@rtfm.com>
*
+ * Copyright (C) 2006, Network Resonance, Inc. Copyright (C) 2011, RTFM, Inc.
*/
-/*
- DTLS code by Eric Rescorla <ekr@rtfm.com>
-
- Copyright (C) 2006, Network Resonance, Inc.
- Copyright (C) 2011, RTFM, Inc.
-*/
-
-#ifndef OPENSSL_NO_SRTP
#include <stdio.h>
#include <openssl/objects.h>
#include "ssl_locl.h"
-#include "srtp.h"
+#ifndef OPENSSL_NO_SRTP
-static SRTP_PROTECTION_PROFILE srtp_known_profiles[]=
+static SRTP_PROTECTION_PROFILE srtp_known_profiles[] = {
{
+ "SRTP_AES128_CM_SHA1_80",
+ SRTP_AES128_CM_SHA1_80,
+ },
{
- "SRTP_AES128_CM_SHA1_80",
- SRTP_AES128_CM_SHA1_80,
- },
+ "SRTP_AES128_CM_SHA1_32",
+ SRTP_AES128_CM_SHA1_32,
+ },
{
- "SRTP_AES128_CM_SHA1_32",
- SRTP_AES128_CM_SHA1_32,
- },
-#if 0
+ "SRTP_AEAD_AES_128_GCM",
+ SRTP_AEAD_AES_128_GCM,
+ },
{
- "SRTP_NULL_SHA1_80",
- SRTP_NULL_SHA1_80,
- },
- {
- "SRTP_NULL_SHA1_32",
- SRTP_NULL_SHA1_32,
- },
-#endif
+ "SRTP_AEAD_AES_256_GCM",
+ SRTP_AEAD_AES_256_GCM,
+ },
{0}
- };
+};
static int find_profile_by_name(char *profile_name,
- SRTP_PROTECTION_PROFILE **pptr,unsigned len)
- {
- SRTP_PROTECTION_PROFILE *p;
-
- p=srtp_known_profiles;
- while(p->name)
- {
- if((len == strlen(p->name)) && !strncmp(p->name,profile_name,
- len))
- {
- *pptr=p;
- return 0;
- }
-
- p++;
- }
-
- return 1;
- }
-
-static int find_profile_by_num(unsigned profile_num,
- SRTP_PROTECTION_PROFILE **pptr)
- {
- SRTP_PROTECTION_PROFILE *p;
-
- p=srtp_known_profiles;
- while(p->name)
- {
- if(p->id == profile_num)
- {
- *pptr=p;
- return 0;
- }
- p++;
- }
-
- return 1;
- }
-
-static int ssl_ctx_make_profiles(const char *profiles_string,STACK_OF(SRTP_PROTECTION_PROFILE) **out)
- {
- STACK_OF(SRTP_PROTECTION_PROFILE) *profiles;
-
- char *col;
- char *ptr=(char *)profiles_string;
-
- SRTP_PROTECTION_PROFILE *p;
-
- if(!(profiles=sk_SRTP_PROTECTION_PROFILE_new_null()))
- {
- SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES, SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES);
- return 1;
- }
-
- do
- {
- col=strchr(ptr,':');
-
- if(!find_profile_by_name(ptr,&p,
- col ? col-ptr : (int)strlen(ptr)))
- {
- sk_SRTP_PROTECTION_PROFILE_push(profiles,p);
- }
- else
- {
- SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES,SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE);
- return 1;
- }
-
- if(col) ptr=col+1;
- } while (col);
-
- *out=profiles;
-
- return 0;
- }
-
-int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx,const char *profiles)
- {
- return ssl_ctx_make_profiles(profiles,&ctx->srtp_profiles);
- }
-
-int SSL_set_tlsext_use_srtp(SSL *s,const char *profiles)
- {
- return ssl_ctx_make_profiles(profiles,&s->srtp_profiles);
- }
-
+ SRTP_PROTECTION_PROFILE **pptr, size_t len)
+{
+ SRTP_PROTECTION_PROFILE *p;
+
+ p = srtp_known_profiles;
+ while (p->name) {
+ if ((len == strlen(p->name))
+ && strncmp(p->name, profile_name, len) == 0) {
+ *pptr = p;
+ return 0;
+ }
+
+ p++;
+ }
+
+ return 1;
+}
+
+static int ssl_ctx_make_profiles(const char *profiles_string,
+ STACK_OF(SRTP_PROTECTION_PROFILE) **out)
+{
+ STACK_OF(SRTP_PROTECTION_PROFILE) *profiles;
+
+ char *col;
+ char *ptr = (char *)profiles_string;
+ SRTP_PROTECTION_PROFILE *p;
+
+ if ((profiles = sk_SRTP_PROTECTION_PROFILE_new_null()) == NULL) {
+ SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES,
+ SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES);
+ return 1;
+ }
+
+ do {
+ col = strchr(ptr, ':');
+
+ if (!find_profile_by_name(ptr, &p, col ? (size_t)(col - ptr)
+ : strlen(ptr))) {
+ if (sk_SRTP_PROTECTION_PROFILE_find(profiles, p) >= 0) {
+ SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES,
+ SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
+ goto err;
+ }
+
+ if (!sk_SRTP_PROTECTION_PROFILE_push(profiles, p)) {
+ SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES,
+ SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES);
+ goto err;
+ }
+ } else {
+ SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES,
+ SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE);
+ goto err;
+ }
+
+ if (col)
+ ptr = col + 1;
+ } while (col);
+
+ sk_SRTP_PROTECTION_PROFILE_free(*out);
+
+ *out = profiles;
+
+ return 0;
+ err:
+ sk_SRTP_PROTECTION_PROFILE_free(profiles);
+ return 1;
+}
+
+int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx, const char *profiles)
+{
+ return ssl_ctx_make_profiles(profiles, &ctx->srtp_profiles);
+}
+
+int SSL_set_tlsext_use_srtp(SSL *s, const char *profiles)
+{
+ return ssl_ctx_make_profiles(profiles, &s->srtp_profiles);
+}
STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(SSL *s)
- {
- if(s != NULL)
- {
- if(s->srtp_profiles != NULL)
- {
- return s->srtp_profiles;
- }
- else if((s->ctx != NULL) &&
- (s->ctx->srtp_profiles != NULL))
- {
- return s->ctx->srtp_profiles;
- }
- }
-
- return NULL;
- }
+{
+ if (s != NULL) {
+ if (s->srtp_profiles != NULL) {
+ return s->srtp_profiles;
+ } else if ((s->ctx != NULL) && (s->ctx->srtp_profiles != NULL)) {
+ return s->ctx->srtp_profiles;
+ }
+ }
+
+ return NULL;
+}
SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(SSL *s)
- {
- return s->srtp_profile;
- }
-
-/* Note: this function returns 0 length if there are no
- profiles specified */
-int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen)
- {
- int ct=0;
- int i;
- STACK_OF(SRTP_PROTECTION_PROFILE) *clnt=0;
- SRTP_PROTECTION_PROFILE *prof;
-
- clnt=SSL_get_srtp_profiles(s);
- ct=sk_SRTP_PROTECTION_PROFILE_num(clnt); /* -1 if clnt == 0 */
-
- if(p)
- {
- if(ct==0)
- {
- SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_USE_SRTP_EXT,SSL_R_EMPTY_SRTP_PROTECTION_PROFILE_LIST);
- return 1;
- }
-
- if((2 + ct*2 + 1) > maxlen)
- {
- SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_USE_SRTP_EXT,SSL_R_SRTP_PROTECTION_PROFILE_LIST_TOO_LONG);
- return 1;
- }
-
- /* Add the length */
- s2n(ct * 2, p);
- for(i=0;i<ct;i++)
- {
- prof=sk_SRTP_PROTECTION_PROFILE_value(clnt,i);
- s2n(prof->id,p);
- }
-
- /* Add an empty use_mki value */
- *p++ = 0;
- }
-
- *len=2 + ct*2 + 1;
-
- return 0;
- }
-
-
-int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len,int *al)
- {
- SRTP_PROTECTION_PROFILE *cprof,*sprof;
- STACK_OF(SRTP_PROTECTION_PROFILE) *clnt=0,*srvr;
- int ct;
- int mki_len;
- int i,j;
- int id;
- int ret;
-
- /* Length value + the MKI length */
- if(len < 3)
- {
- SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
- *al=SSL_AD_DECODE_ERROR;
- return 1;
- }
-
- /* Pull off the length of the cipher suite list */
- n2s(d, ct);
- len -= 2;
-
- /* Check that it is even */
- if(ct%2)
- {
- SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
- *al=SSL_AD_DECODE_ERROR;
- return 1;
- }
-
- /* Check that lengths are consistent */
- if(len < (ct + 1))
- {
- SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
- *al=SSL_AD_DECODE_ERROR;
- return 1;
- }
-
-
- clnt=sk_SRTP_PROTECTION_PROFILE_new_null();
-
- while(ct)
- {
- n2s(d,id);
- ct-=2;
- len-=2;
-
- if(!find_profile_by_num(id,&cprof))
- {
- sk_SRTP_PROTECTION_PROFILE_push(clnt,cprof);
- }
- else
- {
- ; /* Ignore */
- }
- }
-
- /* Now extract the MKI value as a sanity check, but discard it for now */
- mki_len = *d;
- d++; len--;
-
- if (mki_len != len)
- {
- SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_MKI_VALUE);
- *al=SSL_AD_DECODE_ERROR;
- return 1;
- }
-
- srvr=SSL_get_srtp_profiles(s);
-
- /* Pick our most preferred profile. If no profiles have been
- configured then the outer loop doesn't run
- (sk_SRTP_PROTECTION_PROFILE_num() = -1)
- and so we just return without doing anything */
- for(i=0;i<sk_SRTP_PROTECTION_PROFILE_num(srvr);i++)
- {
- sprof=sk_SRTP_PROTECTION_PROFILE_value(srvr,i);
-
- for(j=0;j<sk_SRTP_PROTECTION_PROFILE_num(clnt);j++)
- {
- cprof=sk_SRTP_PROTECTION_PROFILE_value(clnt,j);
-
- if(cprof->id==sprof->id)
- {
- s->srtp_profile=sprof;
- *al=0;
- ret=0;
- goto done;
- }
- }
- }
-
- ret=0;
-
-done:
- if(clnt) sk_SRTP_PROTECTION_PROFILE_free(clnt);
-
- return ret;
- }
-
-int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen)
- {
- if(p)
- {
- if(maxlen < 3)
- {
- SSLerr(SSL_F_SSL_ADD_SERVERHELLO_USE_SRTP_EXT,SSL_R_SRTP_PROTECTION_PROFILE_LIST_TOO_LONG);
- return 1;
- }
-
- if(s->srtp_profile==0)
- {
- SSLerr(SSL_F_SSL_ADD_SERVERHELLO_USE_SRTP_EXT,SSL_R_USE_SRTP_NOT_NEGOTIATED);
- return 1;
- }
-
- s2n(s->srtp_profile->id,p);
- *p++ = 0;
- }
- *len=3;
-
- return 0;
- }
-
-
-int ssl_parse_serverhello_use_srtp_ext(SSL *s, unsigned char *d, int len,int *al)
- {
- unsigned id;
- int i;
- STACK_OF(SRTP_PROTECTION_PROFILE) *clnt;
- SRTP_PROTECTION_PROFILE *prof;
-
- if(len!=3)
- {
- SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
- *al=SSL_AD_DECODE_ERROR;
- return 1;
- }
-
- n2s(d,id);
- if (*d) /* Must be no MKI, since we never offer one */
- {
- SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_MKI_VALUE);
- *al=SSL_AD_ILLEGAL_PARAMETER;
- return 1;
- }
-
- clnt=SSL_get_srtp_profiles(s);
-
- /* Throw an error if the server gave us an unsolicited extension */
- if (clnt == NULL)
- {
- SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT,SSL_R_NO_SRTP_PROFILES);
- *al=SSL_AD_DECODE_ERROR;
- return 1;
- }
-
- /* Check to see if the server gave us something we support
- (and presumably offered)
- */
- for(i=0;i<sk_SRTP_PROTECTION_PROFILE_num(clnt);i++)
- {
- prof=sk_SRTP_PROTECTION_PROFILE_value(clnt,i);
-
- if(prof->id == id)
- {
- s->srtp_profile=prof;
- *al=0;
- return 0;
- }
- }
-
- SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
- *al=SSL_AD_DECODE_ERROR;
- return 1;
- }
-
-
+{
+ return s->srtp_profile;
+}
#endif
projects / openssl.git / blobdiff