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| author | Allan McRae <allan@archlinux.org> | 2013-10-25 14:25:38 +1000 |
|---|---|---|
| committer | Allan McRae <allan@archlinux.org> | 2013-10-25 14:28:32 +1000 |
| commit | 894f3f1049135dcbeaab8f18690973663ef3147c (patch) | |
| tree | 5be512d821ae330cb5cc88fb44f74b6184a34626 /sysdeps/posix | |
| parent | b85545a67110b236676aec8000f52d8385465660 (diff) | |
| download | glibc-894f3f1049135dcbeaab8f18690973663ef3147c.tar.gz glibc-894f3f1049135dcbeaab8f18690973663ef3147c.tar.xz glibc-894f3f1049135dcbeaab8f18690973663ef3147c.zip | |
Fix incorrect getaddrinfo assertion trigger
[BZ #9954] With the following /etc/hosts: 127.0.0.1 www.my-domain.es 127.0.1.1 www.my-domain.es 192.168.0.1 www.my-domain.es Using getaddrinfo() on www.my-domain.es, trigger the following assertion: ../sysdeps/posix/getaddrinfo.c:1473: rfc3484_sort: Assertion `src->results[i].native == -1 || src->results[i].native == a1_native' failed. This is due to two different bugs: - In rfc3484_sort() rule 7, src->results[i].native is assigned even if src->results[i].index is -1, meaning that no interface is associated. - In getaddrinfo() the source IP address used with the lo interface needs a special case, as it can be any IP within 127.X.Y.Z.
Diffstat (limited to 'sysdeps/posix')
| -rw-r--r-- | sysdeps/posix/getaddrinfo.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c index 0f4b88514f..e6ce4cfd63 100644 --- a/sysdeps/posix/getaddrinfo.c +++ b/sysdeps/posix/getaddrinfo.c @@ -1666,13 +1666,13 @@ rfc3484_sort (const void *p1, const void *p2, void *arg) /* Fill in the results in all the records. */ for (int i = 0; i < src->nresults; ++i) - if (src->results[i].index == a1_index) + if (a1_index != -1 && src->results[i].index == a1_index) { assert (src->results[i].native == -1 || src->results[i].native == a1_native); src->results[i].native = a1_native; } - else if (src->results[i].index == a2_index) + else if (a2_index != -1 && src->results[i].index == a2_index) { assert (src->results[i].native == -1 || src->results[i].native == a2_native); @@ -2532,7 +2532,14 @@ getaddrinfo (const char *name, const char *service, tmp.addr[0] = 0; tmp.addr[1] = 0; tmp.addr[2] = htonl (0xffff); - tmp.addr[3] = sinp->sin_addr.s_addr; + /* Special case for lo interface, the source address + being possibly different than the interface + address. */ + if ((ntohl(sinp->sin_addr.s_addr) & 0xff000000) + == 0x7f000000) + tmp.addr[3] = htonl(0x7f000001); + else + tmp.addr[3] = sinp->sin_addr.s_addr; } else { |