Document extension clash.
[openssl.git] / apps / s_client.c
index b7e4fbb40831639b5f22afbd5a935539f84bcc9d..9efea79aaf58100e34b2247d78b4c57672d86cbb 100644 (file)
@@ -203,7 +203,6 @@ static int c_debug=0;
 #ifndef OPENSSL_NO_TLSEXT
 static int c_tlsextdebug=0;
 static int c_status_req=0;
-static int c_proof_debug=0;
 #endif
 static int c_msg=0;
 static int c_showcerts=0;
@@ -215,7 +214,8 @@ static void sc_usage(void);
 static void print_stuff(BIO *berr,SSL *con,int full);
 #ifndef OPENSSL_NO_TLSEXT
 static int ocsp_resp_cb(SSL *s, void *arg);
-static int audit_proof_cb(SSL *s, void *arg);
+static int c_auth = 0;
+static int c_auth_require_reneg = 0;
 #endif
 static BIO *bio_c_out=NULL;
 static BIO *bio_c_msg=NULL;
@@ -223,6 +223,37 @@ static int c_quiet=0;
 static int c_ign_eof=0;
 static int c_brief=0;
 
+#ifndef OPENSSL_NO_TLSEXT
+
+static unsigned char *generated_supp_data = NULL;
+
+static const unsigned char *most_recent_supplemental_data = NULL;
+static size_t most_recent_supplemental_data_length = 0;
+
+static int server_provided_server_authz = 0;
+static int server_provided_client_authz = 0;
+
+static const unsigned char auth_ext_data[]={TLSEXT_AUTHZDATAFORMAT_dtcp};
+
+static int suppdata_cb(SSL *s, unsigned short supp_data_type,
+                      const unsigned char *in,
+                      unsigned short inlen, int *al,
+                      void *arg);
+
+static int auth_suppdata_generate_cb(SSL *s, unsigned short supp_data_type,
+                                    const unsigned char **out,
+                                    unsigned short *outlen, void *arg);
+
+static int authz_tlsext_generate_cb(SSL *s, unsigned short ext_type,
+                                   const unsigned char **out, unsigned short *outlen,
+                                   void *arg);
+
+static int authz_tlsext_cb(SSL *s, unsigned short ext_type,
+                          const unsigned char *in,
+                          unsigned short inlen, int *al,
+                          void *arg);
+#endif
+
 #ifndef OPENSSL_NO_PSK
 /* Default PSK identity and key */
 static char *psk_identity="Client_identity";
@@ -350,6 +381,7 @@ static void sc_usage(void)
        BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
        BIO_printf(bio_err,"                 only \"smtp\", \"pop3\", \"imap\", \"ftp\" and \"xmpp\"\n");
        BIO_printf(bio_err,"                 are supported.\n");
+       BIO_printf(bio_err," -xmpphost host - When used with \"-starttls xmpp\" specifies the virtual host.\n");
 #ifndef OPENSSL_NO_ENGINE
        BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
 #endif
@@ -361,14 +393,13 @@ static void sc_usage(void)
        BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
        BIO_printf(bio_err," -status           - request certificate status from server\n");
        BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
-       BIO_printf(bio_err," -proof_debug      - request an audit proof and print its hex dump\n");
+       BIO_printf(bio_err," -serverinfo types - send empty ClientHello extensions (comma-separated numbers)\n");
+       BIO_printf(bio_err," -auth               - send and receive RFC 5878 TLS auth extensions and supplemental data\n");
+       BIO_printf(bio_err," -auth_require_reneg - Do not send TLS auth extensions until renegotiation\n");
 # ifndef OPENSSL_NO_NEXTPROTONEG
        BIO_printf(bio_err," -nextprotoneg arg - enable NPN extension, considering named protocols supported (comma-separated list)\n");
        BIO_printf(bio_err," -alpn arg         - enable ALPN extension, considering named protocols supported (comma-separated list)\n");
 # endif
-#ifndef OPENSSL_NO_TLSEXT
-       BIO_printf(bio_err," -serverinfo types - send empty ClientHello extensions (comma-separated numbers)\n");
-#endif
 #endif
        BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
        BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
@@ -595,6 +626,7 @@ int MAIN(int argc, char **argv)
        short port=PORT;
        int full_log=1;
        char *host=SSL_HOST_NAME;
+       char *xmpphost = NULL;
        char *cert_file=NULL,*key_file=NULL,*chain_file=NULL;
        int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
        char *passarg = NULL, *pass = NULL;
@@ -726,6 +758,11 @@ static char *jpake_secret = NULL;
                        if (!extract_host_port(*(++argv),&host,NULL,&port))
                                goto bad;
                        }
+               else if (strcmp(*argv,"-xmpphost") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       xmpphost= *(++argv);
+                       }
                else if (strcmp(*argv,"-verify") == 0)
                        {
                        verify=SSL_VERIFY_PEER;
@@ -816,8 +853,10 @@ static char *jpake_secret = NULL;
                        c_tlsextdebug=1;
                else if (strcmp(*argv,"-status") == 0)
                        c_status_req=1;
-               else if (strcmp(*argv,"-proof_debug") == 0)
-                       c_proof_debug=1;
+               else if (strcmp(*argv,"-auth") == 0)
+                       c_auth = 1;
+               else if (strcmp(*argv,"-auth_require_reneg") == 0)
+                       c_auth_require_reneg = 1;
 #endif
 #ifdef WATT32
                else if (strcmp(*argv,"-wdebug") == 0)
@@ -1329,6 +1368,7 @@ bad:
                        goto end;
                        }
                SSL_CTX_set_alpn_protos(ctx, alpn, alpn_len);
+               OPENSSL_free(alpn);
                }
 #endif
 #ifndef OPENSSL_NO_TLSEXT
@@ -1391,9 +1431,12 @@ bad:
                }
 
 #endif
-       if (c_proof_debug)
-               SSL_CTX_set_tlsext_authz_server_audit_proof_cb(ctx,
-                                                              audit_proof_cb);
+       if (c_auth)
+               {
+               SSL_CTX_set_custom_cli_ext(ctx, TLSEXT_TYPE_client_authz, authz_tlsext_generate_cb, authz_tlsext_cb, bio_err);
+               SSL_CTX_set_custom_cli_ext(ctx, TLSEXT_TYPE_server_authz, authz_tlsext_generate_cb, authz_tlsext_cb, bio_err);
+               SSL_CTX_set_cli_supp_data(ctx, TLSEXT_SUPPLEMENTALDATATYPE_authz_data, suppdata_cb, auth_suppdata_generate_cb, bio_err);
+               }
 #endif
 
        con=SSL_new(ctx);
@@ -1669,14 +1712,18 @@ SSL_set_tlsext_status_ids(con, ids);
                int seen = 0;
                BIO_printf(sbio,"<stream:stream "
                    "xmlns:stream='http://etherx.jabber.org/streams' "
-                   "xmlns='jabber:client' to='%s' version='1.0'>", host);
+                   "xmlns='jabber:client' to='%s' version='1.0'>", xmpphost ?
+                          xmpphost : host);
                seen = BIO_read(sbio,mbuf,BUFSIZZ);
                mbuf[seen] = 0;
-               while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
+               while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'") &&
+                               !strstr(mbuf, "<starttls xmlns=\"urn:ietf:params:xml:ns:xmpp-tls\""))
                        {
-                       if (strstr(mbuf, "/stream:features>"))
-                               goto shut;
                        seen = BIO_read(sbio,mbuf,BUFSIZZ);
+
+                       if (seen <= 0)
+                               goto shut;
+
                        mbuf[seen] = 0;
                        }
                BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
@@ -1734,6 +1781,13 @@ SSL_set_tlsext_status_ids(con, ids);
                                                "CONNECTION ESTABLISHED\n");
                                        print_ssl_summary(bio_err, con);
                                        }
+                               /*handshake is complete - free the generated supp data allocated in the callback */
+                               if (generated_supp_data)
+                                       {
+                                       OPENSSL_free(generated_supp_data);
+                                       generated_supp_data = NULL;
+                                       }
+
                                print_stuff(bio_c_out,con,full_log);
                                if (full_log > 0) full_log--;
 
@@ -1854,7 +1908,7 @@ SSL_set_tlsext_status_ids(con, ids);
 
                if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
                        {
-                       BIO_printf(bio_err,"TIMEOUT occured\n");
+                       BIO_printf(bio_err,"TIMEOUT occurred\n");
                        }
 
                if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
@@ -2383,26 +2437,74 @@ static int ocsp_resp_cb(SSL *s, void *arg)
        return 1;
        }
 
-static int audit_proof_cb(SSL *s, void *arg)
+static int authz_tlsext_cb(SSL *s, unsigned short ext_type,
+                          const unsigned char *in,
+                          unsigned short inlen, int *al,
+                          void *arg)
+       {
+       if (TLSEXT_TYPE_server_authz == ext_type)
+               server_provided_server_authz
+                 = (memchr(in, TLSEXT_AUTHZDATAFORMAT_dtcp, inlen) != NULL);
+
+       if (TLSEXT_TYPE_client_authz == ext_type)
+               server_provided_client_authz
+                 = (memchr(in, TLSEXT_AUTHZDATAFORMAT_dtcp, inlen) != NULL);
+
+       return 1;
+       }
+
+static int authz_tlsext_generate_cb(SSL *s, unsigned short ext_type,
+                                   const unsigned char **out, unsigned short *outlen,
+                                   void *arg)
        {
-       const unsigned char *proof;
-       size_t proof_len;
-       size_t i;
-       SSL_SESSION *sess = SSL_get_session(s);
-
-       proof = SSL_SESSION_get_tlsext_authz_server_audit_proof(sess,
-                                                               &proof_len);
-       if (proof != NULL)
+       if (c_auth)
                {
-               BIO_printf(bio_c_out, "Audit proof: ");
-               for (i = 0; i < proof_len; ++i)
-                       BIO_printf(bio_c_out, "%02X", proof[i]);
-               BIO_printf(bio_c_out, "\n");
+               /*if auth_require_reneg flag is set, only send extensions if
+                 renegotiation has occurred */
+               if (!c_auth_require_reneg || (c_auth_require_reneg && SSL_num_renegotiations(s)))
+                       {
+                       *out = auth_ext_data;
+                       *outlen = 1;
+                       return 1;
+                       }
                }
-       else
+       /* no auth extension to send */
+       return -1;
+       }
+
+static int suppdata_cb(SSL *s, unsigned short supp_data_type,
+                      const unsigned char *in,
+                      unsigned short inlen, int *al,
+                      void *arg)
+       {
+       if (supp_data_type == TLSEXT_SUPPLEMENTALDATATYPE_authz_data)
                {
-               BIO_printf(bio_c_out, "No audit proof found.\n");
+               most_recent_supplemental_data = in;
+               most_recent_supplemental_data_length = inlen;
                }
        return 1;
        }
+
+static int auth_suppdata_generate_cb(SSL *s, unsigned short supp_data_type,
+                                    const unsigned char **out,
+                                    unsigned short *outlen, void *arg)
+       {
+       if (c_auth && server_provided_client_authz && server_provided_server_authz)
+               {
+               /*if auth_require_reneg flag is set, only send supplemental data if
+                 renegotiation has occurred */
+               if (!c_auth_require_reneg
+                   || (c_auth_require_reneg && SSL_num_renegotiations(s)))
+                       {
+                       generated_supp_data = OPENSSL_malloc(10);
+                       memcpy(generated_supp_data, "5432154321", 10);
+                       *out = generated_supp_data;
+                       *outlen = 10;
+                       return 1;
+                       }
+               }
+       /* no supplemental data to send */
+       return -1;
+       }
+
 #endif