Index: cadaver-0.23.3/src/cadaver.c
===================================================================
--- cadaver-0.23.3.orig/src/cadaver.c	2008-10-29 12:35:33.000000000 +0300
+++ cadaver-0.23.3/src/cadaver.c	2014-12-11 15:48:55.970459932 +0300
@@ -99,6 +99,8 @@
 
 int tolerant; /* tolerate DAV-enabledness failure */
 
+int forcecert;
+
 /* Current output state */
 static enum out_state {
     out_none, /* not doing anything */
@@ -129,6 +131,7 @@
 "  Port defaults to 80, path defaults to '/'\n"
 "Options:\n"
 "  -t, --tolerant            Allow cd/open into non-WebDAV enabled collection.\n"
+"  -F, --forcecert           Do not stop on certificate errors (DANGEROUS!).\n"
 "  -r, --rcfile=FILE         Read script from FILE instead of ~/.cadaverrc.\n"
 "  -p, --proxy=PROXY[:PORT]  Use proxy host PROXY and optional proxy port PORT.\n"
 "  -V, --version             Display version information.\n"
@@ -209,6 +212,11 @@
     ne_ssl_cert_validity(c, from, to);
     printf(_("Certificate is valid from %s to %s\n"), from, to);
 
+    if (forcecert) {
+        printf(_("Forced certificate acceptance by commandline key.\n"));
+        return 0;
+    }
+
     if (isatty(STDIN_FILENO)) {
 	printf(_("Do you wish to accept the certificate? (y/n) "));
 	return !yesno();
@@ -440,16 +448,18 @@
 	{ "help", no_argument, NULL, 'h' },
 	{ "proxy", required_argument, NULL, 'p' },
 	{ "tolerant", no_argument, NULL, 't' },
+	{ "forcecert", no_argument, NULL, 'F' },
 	{ "rcfile", required_argument, NULL, 'r' },
 	{ 0, 0, 0, 0 }
     };
     int optc;
-    while ((optc = getopt_long(argc, argv, "ehtp:r:V", opts, NULL)) != -1) {
+    while ((optc = getopt_long(argc, argv, "ehtFp:r:V", opts, NULL)) != -1) {
 	switch (optc) {
 	case 'h': usage(); exit(-1);
 	case 'V': execute_about(); exit(-1);
 	case 'p': set_proxy(optarg); break;
 	case 't': tolerant = 1; break;
+	case 'F': forcecert = 1; break;
 	case 'r': rcfile = strdup(optarg); break;
 	case '?': 
 	default: