diff options
| -rw-r--r-- | src/network/res_query.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/network/res_query.c b/src/network/res_query.c index 2f4da2e2..506dc231 100644 --- a/src/network/res_query.c +++ b/src/network/res_query.c @@ -1,3 +1,4 @@ +#define _BSD_SOURCE #include <resolv.h> #include <netdb.h> @@ -6,7 +7,20 @@ int res_query(const char *name, int class, int type, unsigned char *dest, int le unsigned char q[280]; int ql = __res_mkquery(0, name, class, type, 0, 0, 0, q, sizeof q); if (ql < 0) return ql; - return __res_send(q, ql, dest, len); + int r = __res_send(q, ql, dest, len); + if (r<12) { + h_errno = TRY_AGAIN; + return -1; + } + if ((dest[3] & 15) == 3) { + h_errno = HOST_NOT_FOUND; + return -1; + } + if ((dest[3] & 15) == 0 && !dest[6] && !dest[7]) { + h_errno = NO_DATA; + return -1; + } + return r; } weak_alias(res_query, res_search); |