Fix so that recvauth will work even if a null cachename is passed in

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@2555 dc483132-0cff-0310-8789-dd5450dbe970

diff --git a/src/lib/krb5/krb/recvauth.c b/src/lib/krb5/krb/recvauth.c
index 0eeb5be0691baeed7316066d6977e8626ca64001..559e0aa1688e63fecd5110562ca7e2d3299a5e70 100644 (file)
--- a/src/lib/krb5/krb/recvauth.c
+++ b/src/lib/krb5/krb/recvauth.c
@@ -68,14 +68,14 @@ krb5_recvauth(/* IN */
        krb5_ticket     **ticket;
        krb5_authenticator      **authent;
 {
-       krb5_error_code retval, problem;
-       krb5_data       inbuf;
+       krb5_error_code         retval, problem;
+       krb5_data               inbuf;
        krb5_tkt_authent        *authdat;
        krb5_data               outbuf;
-       krb5_rcache rcache;
+       krb5_rcache             rcache;
        krb5_octet              response;
-       krb5_data       *server_name;
-       char *cachename;
+       krb5_data               *server_name, null_server;
+       char                    *cachename;
        extern krb5_deltat krb5_clockskew;
        static char             *rc_base = "rc_";
        
@@ -154,14 +154,21 @@ krb5_recvauth(/* IN */
                problem = krb5_rc_resolve_type(&rcache,
                                               rc_type ? rc_type : "dfl");
        cachename = NULL;
-       server_name = krb5_princ_component(server, 0);
+       if (server) {
+           server_name = krb5_princ_component(server, 0);
+       } else {
+           null_server.data = "default";
+           null_server.length = 7;
+           server_name = &null_server;
+       }
+       
        if (!problem && !(cachename = malloc(server_name->length+1+strlen(rc_base))))
-               problem = ENOMEM;
+           problem = ENOMEM;
        if (!problem) {
-               strcpy(cachename, rc_base ? rc_base : "rc_");
-               strncat(cachename, server_name->data, server_name->length);
-               cachename[server_name->length+strlen(rc_base)] = '\0';
-               problem = krb5_rc_resolve(rcache, cachename);
+           strcpy(cachename, rc_base ? rc_base : "rc_");
+           strncat(cachename, server_name->data, server_name->length);
+           cachename[server_name->length+strlen(rc_base)] = '\0';
+           problem = krb5_rc_resolve(rcache, cachename);
        }
        if (!problem) {
                if (krb5_rc_recover(rcache))