Document "openssl s_server" -crl_check* options
[openssl.git] / apps / s_server.c
index 28501eb43a2fea35c556083d8556b158f90cba1e..a7a728c268978df397fadf0a46186ba472c39a4b 100644 (file)
@@ -179,6 +179,7 @@ typedef unsigned int u_int;
 #include <openssl/x509.h>
 #include <openssl/ssl.h>
 #include <openssl/rand.h>
+#include <openssl/ocsp.h>
 #ifndef OPENSSL_NO_DH
 #include <openssl/dh.h>
 #endif
@@ -281,6 +282,11 @@ static int www=0;
 
 static BIO *bio_s_out=NULL;
 static int s_debug=0;
+#ifndef OPENSSL_NO_TLSEXT
+static int s_tlsextdebug=0;
+static int s_tlsextstatus=0;
+static int cert_status_cb(SSL *s, void *arg);
+#endif
 static int s_msg=0;
 static int s_quiet=0;
 
@@ -314,7 +320,7 @@ static unsigned int psk_server_cb(SSL *ssl, const char *identity,
                }
        if (s_debug)
                BIO_printf(bio_s_out,"identity_len=%d identity=%s\n",
-                       identity ? strlen(identity) : 0, identity);
+                       identity ? (int)strlen(identity) : 0, identity);
 
        /* here we could lookup the given identity e.g. from a database */
        if (strcmp(identity, psk_identity) != 0)
@@ -402,6 +408,11 @@ 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+       BIO_printf(bio_err," -crl_check    - check the peer certificate has not been revoked by its CA.\n" \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+       BIO_printf(bio_err," -crl_check_all - check the peer certificate has not been revoked by its CA\n" \
+                          "                 or any other CRL in the CA chain. CRL(s) are appened to the\n" \
+                          "                 the certificate file.\n");
        BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
        BIO_printf(bio_err," -key arg      - Private Key file to use, in cert file if\n");
        BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
@@ -471,6 +482,8 @@ static void sv_usage(void)
        BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT2);
        BIO_printf(bio_err," -key2 arg     - Private Key file to use for servername, in cert file if\n");
        BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT2);
+       BIO_printf(bio_err," -tlsextdebug  - hex dump of all TLS extensions received\n");
+       BIO_printf(bio_err," -no_ticket    - disable use of RFC4507bis session tickets\n");
 #endif
        }
 
@@ -659,6 +672,152 @@ static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
                }
        return SSL_TLSEXT_ERR_OK;
 }
+
+/* Structure passed to cert status callback */
+
+typedef struct tlsextstatusctx_st {
+   /* Default responder to use */
+   char *host, *path, *port;
+   int use_ssl;
+   int timeout;
+   BIO *err;
+   int verbose;
+} tlsextstatusctx;
+
+static tlsextstatusctx tlscstatp = {NULL, NULL, NULL, 0, -1, NULL, 0};
+
+/* Certificate Status callback. This is called when a client includes a
+ * certificate status request extension.
+ *
+ * This is a simplified version. It examines certificates each time and
+ * makes one OCSP responder query for each request.
+ *
+ * A full version would store details such as the OCSP certificate IDs and
+ * minimise the number of OCSP responses by caching them until they were
+ * considered "expired".
+ */
+
+static int cert_status_cb(SSL *s, void *arg)
+       {
+       tlsextstatusctx *srctx = arg;
+       BIO *err = srctx->err;
+       char *host, *port, *path;
+       int use_ssl;
+       unsigned char *rspder = NULL;
+       int rspderlen;
+       STACK *aia = NULL;
+       X509 *x = NULL;
+       X509_STORE_CTX inctx;
+       X509_OBJECT obj;
+       OCSP_REQUEST *req = NULL;
+       OCSP_RESPONSE *resp = NULL;
+       OCSP_CERTID *id = NULL;
+       STACK_OF(X509_EXTENSION) *exts;
+       int ret = SSL_TLSEXT_ERR_NOACK;
+       int i;
+#if 0
+STACK_OF(OCSP_RESPID) *ids;
+SSL_get_tlsext_status_ids(s, &ids);
+BIO_printf(err, "cert_status: received %d ids\n", sk_OCSP_RESPID_num(ids));
+#endif
+       if (srctx->verbose)
+               BIO_puts(err, "cert_status: callback called\n");
+       /* Build up OCSP query from server certificate */
+       x = SSL_get_certificate(s);
+       aia = X509_get1_ocsp(x);
+       if (aia)
+               {
+               if (!OCSP_parse_url(sk_value(aia, 0),
+                       &host, &port, &path, &use_ssl))
+                       {
+                       BIO_puts(err, "cert_status: can't parse AIA URL\n");
+                       goto err;
+                       }
+               if (srctx->verbose)
+                       BIO_printf(err, "cert_status: AIA URL: %s\n",
+                                       sk_value(aia, 0));
+               }
+       else
+               {
+               if (!srctx->host)
+                       {
+                       BIO_puts(srctx->err, "cert_status: no AIA and no default responder URL\n");
+                       goto done;
+                       }
+               host = srctx->host;
+               path = srctx->path;
+               port = srctx->port;
+               use_ssl = srctx->use_ssl;
+               }
+               
+       if (!X509_STORE_CTX_init(&inctx,
+                               SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)),
+                               NULL, NULL))
+               goto err;
+       if (X509_STORE_get_by_subject(&inctx,X509_LU_X509,
+                               X509_get_issuer_name(x),&obj) <= 0)
+               {
+               BIO_puts(err, "cert_status: Can't retrieve issuer certificate.\n");
+               X509_STORE_CTX_cleanup(&inctx);
+               goto done;
+               }
+       req = OCSP_REQUEST_new();
+       if (!req)
+               goto err;
+       id = OCSP_cert_to_id(NULL, x, obj.data.x509);
+       X509_free(obj.data.x509);
+       X509_STORE_CTX_cleanup(&inctx);
+       if (!id)
+               goto err;
+       if (!OCSP_request_add0_id(req, id))
+               goto err;
+       id = NULL;
+       /* Add any extensions to the request */
+       SSL_get_tlsext_status_exts(s, &exts);
+       for (i = 0; i < sk_X509_EXTENSION_num(exts); i++)
+               {
+               X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
+               if (!OCSP_REQUEST_add_ext(req, ext, -1))
+                       goto err;
+               }
+       resp = process_responder(err, req, host, path, port, use_ssl,
+                                       srctx->timeout);
+       if (!resp)
+               {
+               BIO_puts(err, "cert_status: error querying responder\n");
+               goto done;
+               }
+       rspderlen = i2d_OCSP_RESPONSE(resp, &rspder);
+       if (rspderlen <= 0)
+               goto err;
+       SSL_set_tlsext_status_ocsp_resp(s, rspder, rspderlen);
+       if (srctx->verbose)
+               {
+               BIO_puts(err, "cert_status: ocsp response sent:\n");
+               OCSP_RESPONSE_print(err, resp, 2);
+               }
+       ret = SSL_TLSEXT_ERR_OK;
+       done:
+       if (ret != SSL_TLSEXT_ERR_OK)
+               ERR_print_errors(err);
+       if (aia)
+               {
+               OPENSSL_free(host);
+               OPENSSL_free(path);
+               OPENSSL_free(port);
+               X509_email_free(aia);
+               }
+       if (id)
+               OCSP_CERTID_free(id);
+       if (req)
+               OCSP_REQUEST_free(req);
+       if (resp)
+               OCSP_RESPONSE_free(resp);
+       return ret;
+       err:
+       ret = SSL_TLSEXT_ERR_ALERT_FATAL;
+       goto done;
+       }
 #endif
 
 int MAIN(int, char **);
@@ -838,7 +997,7 @@ int MAIN(int argc, char *argv[])
                        {
                        vflags |= X509_V_FLAG_CRL_CHECK;
                        }
-               else if (strcmp(*argv,"-crl_check") == 0)
+               else if (strcmp(*argv,"-crl_check_all") == 0)
                        {
                        vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
                        }
@@ -869,6 +1028,37 @@ int MAIN(int argc, char *argv[])
                        }
                else if (strcmp(*argv,"-debug") == 0)
                        { s_debug=1; }
+#ifndef OPENSSL_NO_TLSEXT
+               else if (strcmp(*argv,"-tlsextdebug") == 0)
+                       s_tlsextdebug=1;
+               else if (strcmp(*argv,"-status") == 0)
+                       s_tlsextstatus=1;
+               else if (strcmp(*argv,"-status_verbose") == 0)
+                       {
+                       s_tlsextstatus=1;
+                       tlscstatp.verbose = 1;
+                       }
+               else if (!strcmp(*argv, "-status_timeout"))
+                       {
+                       s_tlsextstatus=1;
+                        if (--argc < 1) goto bad;
+                       tlscstatp.timeout = atoi(*(++argv));
+                       }
+               else if (!strcmp(*argv, "-status_url"))
+                       {
+                       s_tlsextstatus=1;
+                        if (--argc < 1) goto bad;
+                       if (!OCSP_parse_url(*(++argv),
+                                       &tlscstatp.host,
+                                       &tlscstatp.port,
+                                       &tlscstatp.path,
+                                       &tlscstatp.use_ssl))
+                               {
+                               BIO_printf(bio_err, "Error parsing URL\n");
+                               goto bad;
+                               }
+                       }
+#endif
                else if (strcmp(*argv,"-msg") == 0)
                        { s_msg=1; }
                else if (strcmp(*argv,"-hack") == 0)
@@ -922,6 +1112,10 @@ int MAIN(int argc, char *argv[])
                        { off|=SSL_OP_NO_TLSv1; }
                else if (strcmp(*argv,"-no_comp") == 0)
                        { off|=SSL_OP_NO_COMPRESSION; }
+#ifndef OPENSSL_NO_TLSEXT
+               else if (strcmp(*argv,"-no_ticket") == 0)
+                       { off|=SSL_OP_NO_TICKET; }
+#endif
 #ifndef OPENSSL_NO_SSL2
                else if (strcmp(*argv,"-ssl2") == 0)
                        { meth=SSLv2_server_method(); }
@@ -1447,6 +1641,7 @@ bad:
                }
 
        BIO_printf(bio_s_out,"ACCEPT\n");
+       (void)BIO_flush(bio_s_out);
        if (www)
                do_server(port,socket_type,&accept_socket,www_body, context);
        else
@@ -1540,6 +1735,19 @@ static int sv_body(char *hostname, int s, unsigned char *context)
 
        if (con == NULL) {
                con=SSL_new(ctx);
+#ifndef OPENSSL_NO_TLSEXT
+       if (s_tlsextdebug)
+               {
+               SSL_set_tlsext_debug_callback(con, tlsext_cb);
+               SSL_set_tlsext_debug_arg(con, bio_s_out);
+               }
+       if (s_tlsextstatus)
+               {
+               SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb);
+               tlscstatp.err = bio_err;
+               SSL_CTX_set_tlsext_status_arg(ctx, &tlscstatp);
+               }
+#endif
 #ifndef OPENSSL_NO_KRB5
                if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
                         {
@@ -1554,6 +1762,11 @@ static int sv_body(char *hostname, int s, unsigned char *context)
                                                 strlen((char *)context));
        }
        SSL_clear(con);
+#if 0
+#ifdef TLSEXT_TYPE_opaque_prf_input
+       SSL_set_tlsext_opaque_prf_input(con, "Test server", 11);
+#endif
+#endif
 
        if (SSL_version(con) == DTLS1_VERSION)
                {
@@ -1609,6 +1822,13 @@ static int sv_body(char *hostname, int s, unsigned char *context)
                SSL_set_msg_callback(con, msg_cb);
                SSL_set_msg_callback_arg(con, bio_s_out);
                }
+#ifndef OPENSSL_NO_TLSEXT
+       if (s_tlsextdebug)
+               {
+               SSL_set_tlsext_debug_callback(con, tlsext_cb);
+               SSL_set_tlsext_debug_arg(con, bio_s_out);
+               }
+#endif
 
        width=s+1;
        for (;;)
@@ -1988,6 +2208,13 @@ static int www_body(char *hostname, int s, unsigned char *context)
        if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
 
        if ((con=SSL_new(ctx)) == NULL) goto err;
+#ifndef OPENSSL_NO_TLSEXT
+               if (s_tlsextdebug)
+                       {
+                       SSL_set_tlsext_debug_callback(con, tlsext_cb);
+                       SSL_set_tlsext_debug_arg(con, bio_s_out);
+                       }
+#endif
 #ifndef OPENSSL_NO_KRB5
        if ((con->kssl_ctx = kssl_ctx_new()) != NULL)
                {