diff options
| -rw-r--r-- | contrib/librdns/resolver.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/contrib/librdns/resolver.c b/contrib/librdns/resolver.c index b38e90514..522ec0d9c 100644 --- a/contrib/librdns/resolver.c +++ b/contrib/librdns/resolver.c @@ -605,6 +605,33 @@ rdns_make_request_full ( return NULL; } + if (cur_name[0] == '.') { + /* Skip dots at the begin */ + unsigned int ndots = strspn (cur_name, "."); + + cur_name += ndots; + clen -= ndots; + + if (clen == 0) { + rdns_warn ("got empty name to resolve"); + rdns_request_free (req); + return NULL; + } + } + + if (cur_name[clen - 1] == '.') { + /* Skip trailing dots */ + while (clen >= 1 && cur_name[clen - 1] == '.') { + clen --; + } + + if (clen == 0) { + rdns_warn ("got empty name to resolve"); + rdns_request_free (req); + return NULL; + } + } + if (last_name == NULL && queries == 1 && clen < MAX_FAKE_NAME) { /* We allocate structure in the static space */ idx = (struct rdns_fake_reply_idx *)align_ptr (fake_buf, 16); |