Free generated supp data after handshake completion, add comment regarding use of...
[openssl.git] / apps / s_server.c
index bf61a8d09eefb9482576017b09ac22e777b90a84..44acb1e79aee4c035de3051e5c2ef48f0ea990bb 100644 (file)
@@ -225,6 +225,20 @@ static DH *get_dh512(void);
 static void s_server_init(void);
 #endif
 
+#ifndef OPENSSL_NO_TLSEXT
+
+static const unsigned char auth_ext_data[]={TLSEXT_AUTHZDATAFORMAT_dtcp};
+
+static unsigned char *generated_supp_data = NULL;
+
+static unsigned char *most_recent_supplemental_data = NULL;
+static size_t most_recent_supplemental_data_length = 0;
+
+static int client_provided_server_authz = 0;
+static int client_provided_client_authz = 0;
+
+#endif
+
 #ifndef OPENSSL_NO_DH
 static unsigned char dh512_p[]={
        0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
@@ -316,10 +330,29 @@ static int cert_chain = 0;
 #endif
 
 #ifndef OPENSSL_NO_TLSEXT
-static BIO *authz_in = NULL;
-static const char *s_authz_file = NULL;
+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);
+
 static BIO *serverinfo_in = NULL;
 static const char *s_serverinfo_file = NULL;
+
+static int c_auth = 0;
+static int c_auth_require_reneg = 0;
 #endif
 
 #ifndef OPENSSL_NO_PSK
@@ -480,10 +513,12 @@ static void sv_usage(void)
        BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
        BIO_printf(bio_err," -cert arg     - certificate file to use\n");
        BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
-       BIO_printf(bio_err," -authz arg   -  binary authz file for certificate\n");
 #ifndef OPENSSL_NO_TLSEXT
        BIO_printf(bio_err," -serverinfo arg - PEM serverinfo file for certificate\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");
 #endif
+    BIO_printf(bio_err," -no_resumption_on_reneg - set SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION flag\n");
        BIO_printf(bio_err," -crl_check    - check the peer certificate has not been revoked by its CA.\n" \
                           "                 The CRL(s) are appended to the certificate file\n");
        BIO_printf(bio_err," -crl_check_all - check the peer certificate has not been revoked by its CA\n" \
@@ -578,6 +613,7 @@ static void sv_usage(void)
        BIO_printf(bio_err," -nextprotoneg arg - set the advertised protocols for the NPN extension (comma-separated list)\n");
 # endif
         BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
+       BIO_printf(bio_err," -alpn arg  - set the advertised protocols for the ALPN extension (comma-separated list)\n");
 #endif
        BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
        BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
@@ -932,7 +968,48 @@ static int next_proto_cb(SSL *s, const unsigned char **data, unsigned int *len,
        return SSL_TLSEXT_ERR_OK;
        }
 # endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
-#endif
+
+/* This the context that we pass to alpn_cb */
+typedef struct tlsextalpnctx_st {
+       unsigned char *data;
+       unsigned short len;
+} tlsextalpnctx;
+
+static int alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
+       {
+       tlsextalpnctx *alpn_ctx = arg;
+
+       if (!s_quiet)
+               {
+               /* We can assume that |in| is syntactically valid. */
+               unsigned i;
+               BIO_printf(bio_s_out, "ALPN protocols advertised by the client: ");
+               for (i = 0; i < inlen; )
+                       {
+                       if (i)
+                               BIO_write(bio_s_out, ", ", 2);
+                       BIO_write(bio_s_out, &in[i + 1], in[i]);
+                       i += in[i] + 1;
+                       }
+               BIO_write(bio_s_out, "\n", 1);
+               }
+
+       if (SSL_select_next_proto((unsigned char**) out, outlen, alpn_ctx->data, alpn_ctx->len, in, inlen) !=
+           OPENSSL_NPN_NEGOTIATED)
+               {
+               return SSL_TLSEXT_ERR_NOACK;
+               }
+
+       if (!s_quiet)
+               {
+               BIO_printf(bio_s_out, "ALPN protocols selected: ");
+               BIO_write(bio_s_out, *out, *outlen);
+               BIO_write(bio_s_out, "\n", 1);
+               }
+
+       return SSL_TLSEXT_ERR_OK;
+       }
+#endif  /* ndef OPENSSL_NO_TLSEXT */
 
 static int not_resumable_sess_cb(SSL *s, int is_forward_secure)
        {
@@ -981,6 +1058,7 @@ int MAIN(int argc, char *argv[])
        EVP_PKEY *s_key = NULL, *s_dkey = NULL;
        int no_cache = 0, ext_cache = 0;
        int rev = 0, naccept = -1;
+       int c_no_resumption_on_reneg = 0;
 #ifndef OPENSSL_NO_TLSEXT
        EVP_PKEY *s_key2 = NULL;
        X509 *s_cert2 = NULL;
@@ -988,6 +1066,8 @@ int MAIN(int argc, char *argv[])
 # ifndef OPENSSL_NO_NEXTPROTONEG
        const char *next_proto_neg_in = NULL;
        tlsextnextprotoctx next_proto;
+       const char *alpn_in = NULL;
+       tlsextalpnctx alpn_ctx = { NULL, 0};
 # endif
 #endif
 #ifndef OPENSSL_NO_PSK
@@ -1093,17 +1173,24 @@ int MAIN(int argc, char *argv[])
                else if (strcmp(*argv,"-crl_download") == 0)
                        crl_download = 1;
 #ifndef OPENSSL_NO_TLSEXT
-               else if (strcmp(*argv,"-authz") == 0)
-                       {
-                       if (--argc < 1) goto bad;
-                       s_authz_file = *(++argv);
-                       }
                else if (strcmp(*argv,"-serverinfo") == 0)
                        {
                        if (--argc < 1) goto bad;
                        s_serverinfo_file = *(++argv);
                        }
+               else if (strcmp(*argv,"-auth") == 0)
+                       {
+                       c_auth = 1;
+                       }
 #endif
+               else if (strcmp(*argv, "-no_resumption_on_reneg") == 0)
+                       {
+                       c_no_resumption_on_reneg = 1;
+                       }
+               else if (strcmp(*argv,"-auth_require_reneg") == 0)
+                       {
+                       c_auth_require_reneg = 1;
+                       }
                else if (strcmp(*argv,"-certform") == 0)
                        {
                        if (--argc < 1) goto bad;
@@ -1438,6 +1525,11 @@ int MAIN(int argc, char *argv[])
                        if (--argc < 1) goto bad;
                        next_proto_neg_in = *(++argv);
                        }
+               else if (strcmp(*argv,"-alpn") == 0)
+                       {
+                       if (--argc < 1) goto bad;
+                       alpn_in = *(++argv);
+                       }
 # endif
 #endif
 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
@@ -1565,7 +1657,8 @@ bad:
 #endif /* OPENSSL_NO_TLSEXT */
                }
 
-#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) 
+#if !defined(OPENSSL_NO_TLSEXT)
+# if !defined(OPENSSL_NO_NEXTPROTONEG) 
        if (next_proto_neg_in)
                {
                unsigned short len;
@@ -1578,6 +1671,16 @@ bad:
                {
                next_proto.data = NULL;
                }
+# endif
+       alpn_ctx.data = NULL;
+       if (alpn_in)
+               {
+               unsigned short len;
+               alpn_ctx.data = next_protos_parse(&len, alpn_in);
+               if (alpn_ctx.data == NULL)
+                       goto end;
+               alpn_ctx.len = len;
+               }
 #endif
 
        if (crl_file)
@@ -1812,6 +1915,8 @@ bad:
        if (next_proto.data)
                SSL_CTX_set_next_protos_advertised_cb(ctx, next_proto_cb, &next_proto);
 # endif
+       if (alpn_ctx.data)
+               SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx);
 #endif 
 
 #ifndef OPENSSL_NO_DH
@@ -1858,14 +1963,20 @@ bad:
                }
 #endif
 
+       if (c_no_resumption_on_reneg)
+               SSL_CTX_set_options(ctx, SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION);
        if (!set_cert_key_stuff(ctx, s_cert, s_key, s_chain, build_chain))
                goto end;
 #ifndef OPENSSL_NO_TLSEXT
-       if (s_authz_file != NULL && !SSL_CTX_use_authz_file(ctx, s_authz_file))
-               goto end;
        if (s_serverinfo_file != NULL
            && !SSL_CTX_use_serverinfo_file(ctx, s_serverinfo_file))
                goto end;
+       if (c_auth)
+               {
+               SSL_CTX_set_custom_srv_ext(ctx, TLSEXT_TYPE_client_authz, authz_tlsext_cb, authz_tlsext_generate_cb, bio_err);
+               SSL_CTX_set_custom_srv_ext(ctx, TLSEXT_TYPE_server_authz, authz_tlsext_cb, authz_tlsext_generate_cb, bio_err);
+               SSL_CTX_set_srv_supp_data(ctx, TLSEXT_SUPPLEMENTALDATATYPE_authz_data, auth_suppdata_generate_cb, suppdata_cb, bio_err);
+               }
 #endif
 #ifndef OPENSSL_NO_TLSEXT
        if (ctx2 && !set_cert_key_stuff(ctx2,s_cert2,s_key2, NULL, build_chain))
@@ -2043,10 +2154,12 @@ end:
                X509_free(s_cert2);
        if (s_key2)
                EVP_PKEY_free(s_key2);
-       if (authz_in != NULL)
-               BIO_free(authz_in);
        if (serverinfo_in != NULL)
                BIO_free(serverinfo_in);
+       if (next_proto.data)
+               OPENSSL_free(next_proto.data);
+       if (alpn_ctx.data)
+               OPENSSL_free(alpn_ctx.data);
 #endif
        ssl_excert_free(exc);
        if (ssl_args)
@@ -2293,7 +2406,7 @@ static int sv_body(char *hostname, int s, int stype, unsigned char *context)
 
                        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 (i <= 0) continue;
@@ -2562,6 +2675,13 @@ static int init_ssl_connection(SSL *con)
                        i=SSL_accept(con);
                }
 #endif
+       /*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;
+               }
+
        if (i <= 0)
                {
                if (BIO_sock_should_retry(i))
@@ -2603,8 +2723,10 @@ static int init_ssl_connection(SSL *con)
                BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
        str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
        ssl_print_sigalgs(bio_s_out, con);
+#ifndef OPENSSL_NO_EC
        ssl_print_point_formats(bio_s_out, con);
        ssl_print_curves(bio_s_out, con, 0);
+#endif
        BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
 
 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
@@ -2947,7 +3069,9 @@ static int www_body(char *hostname, int s, int stype, unsigned char *context)
                                BIO_puts(io,"\n");
                                }
                        ssl_print_sigalgs(io, con);
+#ifndef OPENSSL_NO_EC
                        ssl_print_curves(io, con, 0);
+#endif
                        BIO_printf(io,(SSL_cache_hit(con)
                                ?"---\nReused, "
                                :"---\nNew, "));
@@ -3444,3 +3568,77 @@ static void free_sessions(void)
                }
        first = NULL;
        }
+
+#ifndef OPENSSL_NO_TLSEXT
+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)
+               client_provided_server_authz
+                 = memchr(in,  TLSEXT_AUTHZDATAFORMAT_dtcp, inlen) != NULL;
+
+       if (TLSEXT_TYPE_client_authz == ext_type)
+               client_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)
+       {
+       if (c_auth && client_provided_client_authz && client_provided_server_authz)
+               {
+               /*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;
+                       }
+               }
+       /* 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)
+               {
+               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 && client_provided_client_authz && client_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, "1234512345", 10);
+                       *out = generated_supp_data;
+                       *outlen = 10;
+                       return 1;
+                       }
+               }
+       /* no supplemental data to send */
+       return -1;
+       }
+#endif
+