diff options
| -rw-r--r-- | source4/libcli/resolve/dns_ex.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/source4/libcli/resolve/dns_ex.c b/source4/libcli/resolve/dns_ex.c index 9467521394..4f46235a9f 100644 --- a/source4/libcli/resolve/dns_ex.c +++ b/source4/libcli/resolve/dns_ex.c @@ -393,6 +393,12 @@ static void run_child_dns_lookup(struct dns_ex_state *state, int fd) c = get_a_aaaa_records(state, state->name.name, state->port); } + /* This line in critical - if we return without writing to the + * pipe, this is the signal that the name did not exist */ + if (c.count == 0) { + goto done; + } + addrs = talloc_strdup(state, ""); if (!addrs) { goto done; @@ -521,6 +527,9 @@ static void pipe_handler(struct tevent_context *ev, struct tevent_fd *fde, } if (ret <= 0) { + /* The check for ret == 0 here is important, if the + * name does not exist, then no bytes are written to + * the pipe */ DEBUG(3,("dns child failed to find name '%s' of type %s\n", state->name.name, (state->flags & RESOLVE_NAME_FLAG_DNS_SRV)?"SRV":"A")); composite_error(c, NT_STATUS_OBJECT_NAME_NOT_FOUND); |