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| author | Ulrich Drepper <drepper@redhat.com> | 2008-05-19 17:34:14 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2008-05-19 17:34:14 +0000 |
| commit | 5908f779e76e24827c0c6f38f2b7a0f857333bcb (patch) | |
| tree | fe2afd890ce08267486077d80eee52935e854c3d | |
| parent | 528741cb6c7218e7f2f764fa10aa7e67699eadaa (diff) | |
| download | glibc-5908f779e76e24827c0c6f38f2b7a0f857333bcb.tar.gz glibc-5908f779e76e24827c0c6f38f2b7a0f857333bcb.tar.xz glibc-5908f779e76e24827c0c6f38f2b7a0f857333bcb.zip | |
* resolv/res_query.c (__libc_res_nquery): In case one of two
answer was too short don't try to read that answer's header. * resolv/res_send.c (send_dg): In case of timeout and there are two queries and one has been answered, return value indicating success.
| -rw-r--r-- | ChangeLog | 9 | ||||
| -rw-r--r-- | resolv/res_query.c | 15 | ||||
| -rw-r--r-- | resolv/res_send.c | 7 |
3 files changed, 31 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index da8b1b4a22..f054e8a46c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,12 @@ +2008-05-19 Ulrich Drepper <drepper@redhat.com> + + * resolv/res_query.c (__libc_res_nquery): In case one of two + answer was too short don't try to read that answer's header. + + * resolv/res_send.c (send_dg): In case of timeout and there are + two queries and one has been answered, return value indicating + success. + 2008-05-18 Ulrich Drepper <drepper@redhat.com> * nscd/cache.c (cache_add): Take additional parameter specifying diff --git a/resolv/res_query.c b/resolv/res_query.c index a8e8d7b739..3d2f2fe3a9 100644 --- a/resolv/res_query.c +++ b/resolv/res_query.c @@ -224,6 +224,21 @@ __libc_res_nquery(res_state statp, tests of HP2. */ HEADER *hp2 = answerp2 ? (HEADER *) *answerp2 : hp; + if (n < sizeof (HEADER) && nanswerp2 != NULL + && *nanswerp2 > sizeof (HEADER)) + { + /* Special case of partial answer. */ + assert (hp != hp2); + hp = hp2; + } + else if (nanswerp2 != NULL + && *nanswerp2 < sizeof (HEADER) && n > sizeof (HEADER)) + { + /* Special case of partial answer. */ + assert (hp != hp2); + hp2 = hp; + } + if ((hp->rcode != NOERROR || ntohs(hp->ancount) == 0) && (hp2->rcode != NOERROR || ntohs(hp2->ancount) == 0)) { #ifdef DEBUG diff --git a/resolv/res_send.c b/resolv/res_send.c index b3dbd702a2..e67ef1c676 100644 --- a/resolv/res_send.c +++ b/resolv/res_send.c @@ -975,6 +975,8 @@ send_dg(res_state statp, int recvresp2 = buf2 == NULL; pfd[0].fd = EXT(statp).nssocks[ns]; pfd[0].events = POLLOUT; + if (resplen2 != NULL) + *resplen2 = 0; wait: if (need_recompute) { recompute_resend: @@ -1001,6 +1003,11 @@ send_dg(res_state statp, if (n == 0) { Dprint(statp->options & RES_DEBUG, (stdout, ";; timeout sending\n")); + if (recvresp1) + return resplen; + if (buf2 != NULL && recvresp2) + return 1; + *gotsomewhere = 1; return (0); } |