X-Git-Url: http://www.dolda2000.com/gitweb/?a=blobdiff_plain;f=src%2Fssl-gnutls.c;h=ba4cf0232aa4be76be73cc0318e1690ddebcbb2e;hb=2daf44115026999612b7a4a48cf35bfa711c35c4;hp=e27d31462e2b738836987379dd6e51d05737cfd8;hpb=26902200a8061d8e9211e5104abbf2acc84ed7b9;p=ashd.git

diff --git a/src/ssl-gnutls.c b/src/ssl-gnutls.c
index e27d314..ba4cf02 100644
--- a/src/ssl-gnutls.c
+++ b/src/ssl-gnutls.c
@@ -67,8 +67,6 @@ struct sslconn {
     struct charbuf in;
 };
 
-static gnutls_dh_params_t dhparams;
-
 static int tlsblock(int fd, gnutls_session_t sess, time_t to)
 {
     if(gnutls_record_get_direction(sess))
@@ -260,6 +258,23 @@ out:
     free(pd);
 }
 
+static gnutls_dh_params_t dhparams(void)
+{
+    static int inited = 0;
+    static gnutls_dh_params_t pars;
+    int ret;
+    
+    if(!inited) {
+	if(((ret = gnutls_dh_params_init(&pars)) != 0) ||
+	   ((ret = gnutls_dh_params_generate2(pars, 2048)) != 0)) {
+	    flog(LOG_ERR, "GnuTLS could not generate Diffie-Hellman parameters: %s", gnutls_strerror(ret));
+	    exit(1);
+	}
+	inited = 1;
+    }
+    return(pars);
+}
+
 static void init(void)
 {
     static int inited = 0;
@@ -272,11 +287,6 @@ static void init(void)
 	flog(LOG_ERR, "could not initialize GnuTLS: %s", gnutls_strerror(ret));
 	exit(1);
     }
-    if(((ret = gnutls_dh_params_init(&dhparams)) != 0) ||
-       ((ret = gnutls_dh_params_generate2(dhparams, 2048)) != 0)) {
-	flog(LOG_ERR, "GnuTLS could not generate Diffie-Hellman parameters: %s", gnutls_strerror(ret));
-	exit(1);
-    }
 }
 
 static struct namedcreds *readncreds(char *file)
@@ -346,7 +356,7 @@ static struct namedcreds *readncreds(char *file)
 	flog(LOG_ERR, "ssl: could not use certificate from %s: %s", file, gnutls_strerror(ret));
 	exit(1);
     }
-    gnutls_certificate_set_dh_params(nc->creds, dhparams);
+    gnutls_certificate_set_dh_params(nc->creds, dhparams());
     return(nc);
 }
 
@@ -398,11 +408,24 @@ void handlegnussl(int argc, char **argp, char **argv)
 	    printf("\tcrl=CRL-FILE    [no default]\n");
 	    printf("\t\tThe name of a file to read revocation lists from.\n");
 	    printf("\t\tMay be given multiple times.\n");
+	    printf("\tncert=CERT-FILE [no default]\n");
+	    printf("\t\tThe name of a file to read a named certificate from,\n");
+	    printf("\t\tfor use with SNI-enabled clients.\n");
+	    printf("\t\tMay be given multiple times.\n");
+	    printf("\tncertdir=DIR    [no default]\n");
+	    printf("\t\tRead all *.crt files in the given directory as if they\n");
+	    printf("\t\twere given with `ncert' options.\n");
+	    printf("\t\tMay be given multiple times.\n");
 	    printf("\tport=PORT       [443]\n");
 	    printf("\t\tThe TCP port to listen on.\n");
 	    printf("\n");
 	    printf("\tAll X.509 data files must be PEM-encoded.\n");
-	    printf("\tSee the manpage for information on specifying multiple\n\tcertificates to support SNI operation.\n");
+	    printf("\tIf any certificates were given with `ncert' options, they will be\n");
+	    printf("\tused if a client explicitly names one of them with a\n");
+	    printf("\tserver-name indication. If a client indicates no server name,\n");
+	    printf("\tor if a server-name indication does not match any given\n");
+	    printf("\tcertificate, the certificate given with the `cert' option will\n");
+	    printf("\tbe used instead.\n");
 	    exit(0);
 	} else if(!strcmp(argp[i], "cert")) {
 	    crtfile = argv[i];
@@ -445,17 +468,17 @@ void handlegnussl(int argc, char **argp, char **argv)
 	flog(LOG_ERR, "ssl: needs certificate file at the very least");
 	exit(1);
     }
+    if((fd = listensock6(port)) < 0) {
+	flog(LOG_ERR, "could not listen on IPv6 port (port %i): %s", port, strerror(errno));
+	exit(1);
+    }
     if(keyfile == NULL)
 	keyfile = crtfile;
     if((ret = gnutls_certificate_set_x509_key_file(creds, crtfile, keyfile, GNUTLS_X509_FMT_PEM)) != 0) {
 	flog(LOG_ERR, "ssl: could not load certificate or key: %s", gnutls_strerror(ret));
 	exit(1);
     }
-    gnutls_certificate_set_dh_params(creds, dhparams);
-    if((fd = listensock6(port)) < 0) {
-	flog(LOG_ERR, "could not listen on IPv6 port (port %i): %s", port, strerror(errno));
-	exit(1);
-    }
+    gnutls_certificate_set_dh_params(creds, dhparams());
     bufadd(ncreds, NULL);
     omalloc(pd);
     pd->fd = fd;