- if (path[0] != '/') {
- *error = bad_path;
- return NULL;
- }
- auth_fixpath(path);
-
- /* First try it w/o doing a hostname lookup... */
- *hpp = get_hostent((const char *)&addr, sizeof(addr), AF_INET);
- exp = export_find(*hpp, path);
-
- if (!exp) {
- /* Ok, that didn't fly. Try it with a reverse lookup. */
- free (*hpp);
- *hpp = gethostbyaddr((const char *)&addr, sizeof(addr),
- AF_INET);
- if (!(*hpp)) {
- *error = no_entry;
- *hpp = get_hostent((const char *)&addr, sizeof(addr), AF_INET);
- return NULL;
- } else {
- /* must make sure the hostent is authorative. */
- char **sp;
- struct hostent *forward = NULL;
- char *tmpname;
-
- *hpp = hostent_dup (*hpp);
- tmpname = xstrdup((*hpp)->h_name);
- if (tmpname) {
- forward = gethostbyname(tmpname);
- free(tmpname);
- }
- if (forward) {
- /* now make sure the "addr" is in the list */
- for (sp = forward->h_addr_list ; *sp ; sp++) {
- if (memcmp(*sp, &addr, forward->h_length)==0)
- break;
- }
-
- if (!*sp) {
- /* it was a FAKE */
- *error = faked_hostent;
- return NULL;
- }
- free (*hpp);
- *hpp = hostent_dup (forward);
- }
- else {
- /* never heard of it. misconfigured DNS? */
- *error = no_forward_dns;
- return NULL;
- }
- }