Add ctrl and macro so we can determine if peer support secure renegotiation.
[openssl.git] / ssl / ssl_lib.c
index ccfe399bbe879e4a81580de85e9c1b9a63c99424..39bd9d7cf04bcaf304729df1812db1013f18b395 100644 (file)
 #ifndef OPENSSL_NO_DH
 #include <openssl/dh.h>
 #endif
+#ifndef OPENSSL_NO_ENGINE
+#include <openssl/engine.h>
+#endif
 
 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
 
@@ -256,7 +259,8 @@ int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
        ctx->method=meth;
 
        sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
-               &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
+               &(ctx->cipher_list_by_id),
+               meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
        if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
                {
                SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
@@ -457,7 +461,7 @@ int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
                }
 
        CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
-       p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
+       p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
        CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
        return (p != NULL);
        }
@@ -482,6 +486,16 @@ int SSL_set_trust(SSL *s, int trust)
        return X509_VERIFY_PARAM_set_trust(s->param, trust);
        }
 
+int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
+       {
+       return X509_VERIFY_PARAM_set1(ctx->param, vpm);
+       }
+
+int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
+       {
+       return X509_VERIFY_PARAM_set1(ssl->param, vpm);
+       }
+
 void SSL_free(SSL *s)
        {
        int i;
@@ -542,8 +556,9 @@ void SSL_free(SSL *s)
        if (s->cert != NULL) ssl_cert_free(s->cert);
        /* Free up if allocated */
 
-       if (s->ctx) SSL_CTX_free(s->ctx);
 #ifndef OPENSSL_NO_TLSEXT
+       if (s->tlsext_hostname)
+               OPENSSL_free(s->tlsext_hostname);
        if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
 #ifndef OPENSSL_NO_EC
        if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
@@ -564,6 +579,8 @@ void SSL_free(SSL *s)
 
        if (s->method != NULL) s->method->ssl_free(s);
 
+       if (s->ctx) SSL_CTX_free(s->ctx);
+
 #ifndef        OPENSSL_NO_KRB5
        if (s->kssl_ctx != NULL)
                kssl_ctx_free(s->kssl_ctx);
@@ -1033,7 +1050,8 @@ long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
                s->max_cert_list=larg;
                return(l);
        case SSL_CTRL_SET_MTU:
-               if (SSL_version(s) == DTLS1_VERSION)
+               if (SSL_version(s) == DTLS1_VERSION ||
+                   SSL_version(s) == DTLS1_BAD_VER)
                        {
                        s->d1->mtu = larg;
                        return larg;
@@ -1044,6 +1062,10 @@ long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
                        return 0;
                s->max_send_fragment = larg;
                return 1;
+       case SSL_CTRL_GET_RI_SUPPORT:
+               if (s->s3)
+                       return s->s3->send_connection_binding;
+               else return 0;
        default:
                return(s->method->ssl_ctrl(s,cmd,larg,parg));
                }
@@ -1062,7 +1084,7 @@ long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
                }
        }
 
-struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
+LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
        {
        return ctx->sessions;
        }
@@ -1105,7 +1127,7 @@ long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
                return(ctx->session_cache_mode);
 
        case SSL_CTRL_SESS_NUMBER:
-               return(ctx->sessions->num_items);
+               return(lh_SSL_SESSION_num_items(ctx->sessions));
        case SSL_CTRL_SESS_CONNECT:
                return(ctx->stats.sess_connect);
        case SSL_CTRL_SESS_CONNECT_GOOD:
@@ -1339,16 +1361,34 @@ int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
                j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
                p+=j;
                }
+       /* If p == q, no ciphers and caller indicates an error, otherwise
+        * add MCSV
+        */
+       if (p != q)
+               {
+               static SSL_CIPHER msvc =
+                       {
+                       0, NULL, SSL3_CK_MCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
+                       };
+               j = put_cb ? put_cb(&msvc,p) : ssl_put_cipher_by_char(s,&msvc,p);
+               p+=j;
+#ifdef OPENSSL_RI_DEBUG
+               fprintf(stderr, "MCSV sent by client\n");
+#endif
+               }
+
        return(p-q);
        }
 
 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
                                               STACK_OF(SSL_CIPHER) **skp)
        {
-       SSL_CIPHER *c;
+       const SSL_CIPHER *c;
        STACK_OF(SSL_CIPHER) *sk;
        int i,n;
 
+       s->s3->send_connection_binding = 0;
+
        n=ssl_put_cipher_by_char(s,NULL,NULL);
        if ((num%n) != 0)
                {
@@ -1365,6 +1405,19 @@ STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
 
        for (i=0; i<num; i+=n)
                {
+               /* Check for MCSV */
+               if ((n != 3 || !p[0]) &&
+                       (p[n-2] == ((SSL3_CK_MCSV >> 8) & 0xff)) &&
+                       (p[n-1] == (SSL3_CK_MCSV & 0xff)))
+                       {
+                       s->s3->send_connection_binding = 1;
+                       p += n;
+#ifdef OPENSSL_RI_DEBUG
+                       fprintf(stderr, "MCSV received by server\n");
+#endif
+                       continue;
+                       }
+
                c=ssl_get_cipher_by_char(s,p);
                p+=n;
                if (c != NULL)
@@ -1410,7 +1463,7 @@ int SSL_get_servername_type(const SSL *s)
        }
 #endif
 
-unsigned long SSL_SESSION_hash(const SSL_SESSION *a)
+static unsigned long ssl_session_hash(const SSL_SESSION *a)
        {
        unsigned long l;
 
@@ -1427,7 +1480,7 @@ unsigned long SSL_SESSION_hash(const SSL_SESSION *a)
  * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
  * able to construct an SSL_SESSION that will collide with any existing session
  * with a matching session ID. */
-int SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
+static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
        {
        if (a->ssl_version != b->ssl_version)
                return(1);
@@ -1440,13 +1493,13 @@ int SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
  * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
  * variable. The reason is that the functions aren't static, they're exposed via
  * ssl.h. */
-static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
-static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
+static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
+static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
 
 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
        {
        SSL_CTX *ret=NULL;
-       
+
        if (meth == NULL)
                {
                SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
@@ -1515,15 +1568,14 @@ SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
        ret->app_gen_cookie_cb=0;
        ret->app_verify_cookie_cb=0;
 
-       ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
-                       LHASH_COMP_FN(SSL_SESSION_cmp));
+       ret->sessions=lh_SSL_SESSION_new();
        if (ret->sessions == NULL) goto err;
        ret->cert_store=X509_STORE_new();
        if (ret->cert_store == NULL) goto err;
 
        ssl_create_cipher_list(ret->method,
                &ret->cipher_list,&ret->cipher_list_by_id,
-               SSL_DEFAULT_CIPHER_LIST);
+               meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
        if (ret->cipher_list == NULL
            || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
                {
@@ -1579,6 +1631,45 @@ SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
        ret->psk_client_callback=NULL;
        ret->psk_server_callback=NULL;
 #endif
+#ifndef OPENSSL_NO_BUF_FREELISTS
+       ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
+       ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
+       if (!ret->rbuf_freelist)
+               goto err;
+       ret->rbuf_freelist->chunklen = 0;
+       ret->rbuf_freelist->len = 0;
+       ret->rbuf_freelist->head = NULL;
+       ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
+       if (!ret->wbuf_freelist)
+               {
+               OPENSSL_free(ret->rbuf_freelist);
+               goto err;
+               }
+       ret->wbuf_freelist->chunklen = 0;
+       ret->wbuf_freelist->len = 0;
+       ret->wbuf_freelist->head = NULL;
+#endif
+#ifndef OPENSSL_NO_ENGINE
+       ret->client_cert_engine = NULL;
+#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
+#define eng_strx(x)    #x
+#define eng_str(x)     eng_strx(x)
+       /* Use specific client engine automatically... ignore errors */
+       {
+       ENGINE *eng;
+       eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
+       if (!eng)
+               {
+               ERR_clear_error();
+               ENGINE_load_builtin_engines();
+               eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
+               }
+       if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
+               ERR_clear_error();
+       }
+#endif
+#endif
+
        return(ret);
 err:
        SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
@@ -1592,6 +1683,20 @@ static void SSL_COMP_free(SSL_COMP *comp)
     { OPENSSL_free(comp); }
 #endif
 
+#ifndef OPENSSL_NO_BUF_FREELISTS
+static void
+ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
+       {
+       SSL3_BUF_FREELIST_ENTRY *ent, *next;
+       for (ent = list->head; ent; ent = next)
+               {
+               next = ent->next;
+               OPENSSL_free(ent);
+               }
+       OPENSSL_free(list);
+       }
+#endif
+
 void SSL_CTX_free(SSL_CTX *a)
        {
        int i;
@@ -1629,7 +1734,7 @@ void SSL_CTX_free(SSL_CTX *a)
        CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
 
        if (a->sessions != NULL)
-               lh_free(a->sessions);
+               lh_SSL_SESSION_free(a->sessions);
 
        if (a->cert_store != NULL)
                X509_STORE_free(a->cert_store);
@@ -1654,6 +1759,18 @@ void SSL_CTX_free(SSL_CTX *a)
        if (a->psk_identity_hint)
                OPENSSL_free(a->psk_identity_hint);
 #endif
+#ifndef OPENSSL_NO_ENGINE
+       if (a->client_cert_engine)
+               ENGINE_finish(a->client_cert_engine);
+#endif
+
+#ifndef OPENSSL_NO_BUF_FREELISTS
+       if (a->wbuf_freelist)
+               ssl_buf_freelist_free(a->wbuf_freelist);
+       if (a->rbuf_freelist)
+               ssl_buf_freelist_free(a->rbuf_freelist);
+#endif
+
        OPENSSL_free(a);
        }
 
@@ -1684,7 +1801,7 @@ void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
        X509_VERIFY_PARAM_set_depth(ctx->param, depth);
        }
 
-void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
+void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
        {
        CERT_PKEY *cpk;
        int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
@@ -1896,7 +2013,9 @@ void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
 #define ku_reject(x, usage) \
        (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
 
-int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs)
+#ifndef OPENSSL_NO_EC
+
+int ssl_check_srvr_ecc_cert_and_alg(X509 *x, const SSL_CIPHER *cs)
        {
        unsigned long alg_k, alg_a;
        EVP_PKEY *pkey = NULL;
@@ -1967,6 +2086,8 @@ int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs)
        return 1;  /* all checks are ok */
        }
 
+#endif
+
 /* THIS NEEDS CLEANING UP */
 X509 *ssl_get_server_send_cert(SSL *s)
        {
@@ -2042,7 +2163,7 @@ X509 *ssl_get_server_send_cert(SSL *s)
        return(c->pkeys[i].x509);
        }
 
-EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
+EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher)
        {
        unsigned long alg_a;
        CERT *c;
@@ -2294,8 +2415,10 @@ SSL_METHOD *ssl_bad_method(int ver)
 
 const char *SSL_get_version(const SSL *s)
        {
-       if (s->version == TLS1_VERSION)
-               return("TLSv1");
+       if (s->version == TLS1_1_VERSION)
+               return("TLSv1.1");
+       else if (s->version == SSL3_VERSION)
+               return("SSLv3");
        else if (s->version == SSL3_VERSION)
                return("SSLv3");
        else if (s->version == SSL2_VERSION)
@@ -2480,7 +2603,7 @@ EVP_PKEY *SSL_get_privatekey(SSL *s)
                return(NULL);
        }
 
-SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
+const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
        {
        if ((s->session != NULL) && (s->session->cipher != NULL))
                return(s->session->cipher);
@@ -2895,7 +3018,7 @@ void SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int con
  * vairable, freeing  EVP_MD_CTX previously stored in that variable, if
  * any. If EVP_MD pointer is passed, initializes ctx with this md
  * Returns newly allocated ctx;
- */ 
+ */
 
 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) 
 {
@@ -2917,3 +3040,6 @@ void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
 
 IMPLEMENT_STACK_OF(SSL_CIPHER)
 IMPLEMENT_STACK_OF(SSL_COMP)
+IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
+                                   ssl_cipher_id);
+