import OpenSSL-1.0.1c

1 files changed, 493 insertions, 0 deletions

diff --git a/src/lib/libssl/d1_srtp.c b/src/lib/libssl/d1_srtp.c
new file mode 100644
index 0000000000..928935bd8b
--- /dev/null
+++ b/src/lib/libssl/d1_srtp.c
@@ -0,0 +1,493 @@
+/* ssl/t1_lib.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * 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.
+*/
+
+#ifndef OPENSSL_NO_SRTP
+
+#include <stdio.h>
+#include <openssl/objects.h>
+#include "ssl_locl.h"
+#include "srtp.h"
+
+
+static SRTP_PROTECTION_PROFILE srtp_known_profiles[]=
+    {
+    {
+    "SRTP_AES128_CM_SHA1_80",
+    SRTP_AES128_CM_SHA1_80,
+    },
+    {
+    "SRTP_AES128_CM_SHA1_32",
+    SRTP_AES128_CM_SHA1_32,
+    },
+#if 0
+    {
+    "SRTP_NULL_SHA1_80",
+    SRTP_NULL_SHA1_80,
+    },
+    {
+    "SRTP_NULL_SHA1_32",
+    SRTP_NULL_SHA1_32,
+    },
+#endif
+    {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);
+        }
+
+
+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;
+        }
+
+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 < 5)
+                        {
+                        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(2, p);
+                s2n(s->srtp_profile->id,p);
+                *p++ = 0;
+                }
+        *len=5;
+    
+        return 0;
+        }
+    
+
+int ssl_parse_serverhello_use_srtp_ext(SSL *s, unsigned char *d, int len,int *al)
+        {
+        unsigned id;
+        int i;
+        int ct;
+
+        STACK_OF(SRTP_PROTECTION_PROFILE) *clnt;
+        SRTP_PROTECTION_PROFILE *prof;
+
+        if(len!=5)
+                {
+                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, ct);
+        if(ct!=2)
+                {
+                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;
+        }
+
+
+#endif