diff options
Diffstat (limited to 'ssl/d1_srtp.c')
-rw-r--r-- | ssl/d1_srtp.c | 93 |
1 files changed, 31 insertions, 62 deletions
diff --git a/ssl/d1_srtp.c b/ssl/d1_srtp.c index ab9c41922c..535539ba3b 100644 --- a/ssl/d1_srtp.c +++ b/ssl/d1_srtp.c @@ -168,25 +168,6 @@ static int find_profile_by_name(char *profile_name, 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; @@ -209,11 +190,19 @@ static int ssl_ctx_make_profiles(const char *profiles_string,STACK_OF(SRTP_PROTE if(!find_profile_by_name(ptr,&p, col ? col-ptr : (int)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); + sk_SRTP_PROTECTION_PROFILE_free(profiles); + return 1; + } + sk_SRTP_PROTECTION_PROFILE_push(profiles,p); } else { SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES,SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE); + sk_SRTP_PROTECTION_PROFILE_free(profiles); return 1; } @@ -305,13 +294,12 @@ int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int max 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; + SRTP_PROTECTION_PROFILE *sprof; + STACK_OF(SRTP_PROTECTION_PROFILE) *srvr; int ct; int mki_len; - int i,j; - int id; - int ret; + int i, srtp_pref; + unsigned int id; /* Length value + the MKI length */ if(len < 3) @@ -341,22 +329,32 @@ int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len,int *al return 1; } + srvr=SSL_get_srtp_profiles(s); + s->srtp_profile = NULL; + /* Search all profiles for a match initially */ + srtp_pref = sk_SRTP_PROTECTION_PROFILE_num(srvr); - clnt=sk_SRTP_PROTECTION_PROFILE_new_null(); - while(ct) { n2s(d,id); ct-=2; len-=2; - if(!find_profile_by_num(id,&cprof)) + /* + * Only look for match in profiles of higher preference than + * current match. + * If no profiles have been have been configured then this + * does nothing. + */ + for (i = 0; i < srtp_pref; i++) { - sk_SRTP_PROTECTION_PROFILE_push(clnt,cprof); - } - else - { - ; /* Ignore */ + sprof = sk_SRTP_PROTECTION_PROFILE_value(srvr, i); + if (sprof->id == id) + { + s->srtp_profile = sprof; + srtp_pref = i; + break; + } } } @@ -371,36 +369,7 @@ int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len,int *al 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; + return 0; } int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen) |