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authorAllan McRae <allan@archlinux.org>2013-10-25 14:25:38 +1000
committerAllan McRae <allan@archlinux.org>2013-10-25 14:28:32 +1000
commit894f3f1049135dcbeaab8f18690973663ef3147c (patch)
tree5be512d821ae330cb5cc88fb44f74b6184a34626 /sysdeps/posix/getaddrinfo.c
parentb85545a67110b236676aec8000f52d8385465660 (diff)
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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/getaddrinfo.c')
-rw-r--r--sysdeps/posix/getaddrinfo.c13
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
{