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https://github.com/archlinuxarm/PKGBUILDs.git
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113 lines
4 KiB
Diff
113 lines
4 KiB
Diff
From 3fdcecc87eb381ef300719e419d5863dd8a64a97 Mon Sep 17 00:00:00 2001
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From: Lennart Poettering <lennart@poettering.net>
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Date: Mon, 5 Jan 2015 16:23:21 +0100
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Subject: [PATCH] nss-myhostname: always will in canonical hostname field when
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resolving addresses to hostnames
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https://bugs.freedesktop.org/show_bug.cgi?id=87634
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---
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src/nss-myhostname/nss-myhostname.c | 36 +++++++++++++++++++-----------------
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1 file changed, 19 insertions(+), 17 deletions(-)
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diff --git a/src/nss-myhostname/nss-myhostname.c b/src/nss-myhostname/nss-myhostname.c
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index dcf7c1f..a939bb2 100644
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--- a/src/nss-myhostname/nss-myhostname.c
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+++ b/src/nss-myhostname/nss-myhostname.c
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@@ -38,7 +38,7 @@
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/* We use 127.0.0.2 as IPv4 address. This has the advantage over
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* 127.0.0.1 that it can be translated back to the local hostname. For
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* IPv6 we use ::1 which unfortunately will not translate back to the
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- * hostname but instead something like "localhost6" or so. */
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+ * hostname but instead something like "localhost" or so. */
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#define LOCALADDRESS_IPV4 (htonl(0x7F000002))
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#define LOCALADDRESS_IPV6 &in6addr_loopback
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@@ -415,6 +415,7 @@ enum nss_status _nss_myhostname_gethostbyaddr2_r(
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_cleanup_free_ char *hn = NULL;
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int n_addresses = 0;
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struct local_address *a;
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+ bool additional_from_hostname = false;
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unsigned n;
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assert(addr);
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@@ -436,7 +437,6 @@ enum nss_status _nss_myhostname_gethostbyaddr2_r(
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}
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if (af == AF_INET) {
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-
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if ((*(uint32_t*) addr) == LOCALADDRESS_IPV4)
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goto found;
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@@ -450,10 +450,10 @@ enum nss_status _nss_myhostname_gethostbyaddr2_r(
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assert(af == AF_INET6);
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if (memcmp(addr, LOCALADDRESS_IPV6, 16) == 0) {
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- additional = "localhost";
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+ canonical = "localhost";
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+ additional_from_hostname = true;
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goto found;
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}
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-
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}
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n_addresses = local_addresses(NULL, 0, AF_UNSPEC, &addresses);
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@@ -462,18 +462,8 @@ enum nss_status _nss_myhostname_gethostbyaddr2_r(
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if (af != a->family)
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continue;
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- if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0) {
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-
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- hn = gethostname_malloc();
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- if (!hn) {
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- *errnop = ENOMEM;
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- *h_errnop = NO_RECOVERY;
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- return NSS_STATUS_TRYAGAIN;
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- }
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-
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- canonical = hn;
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+ if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0)
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goto found;
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- }
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}
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}
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@@ -487,7 +477,6 @@ enum nss_status _nss_myhostname_gethostbyaddr2_r(
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continue;
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if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0) {
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-
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canonical = "gateway";
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goto found;
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}
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@@ -500,6 +489,20 @@ enum nss_status _nss_myhostname_gethostbyaddr2_r(
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return NSS_STATUS_NOTFOUND;
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found:
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+ if (!canonical || (!additional && additional_from_hostname)) {
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+ hn = gethostname_malloc();
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+ if (!hn) {
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+ *errnop = ENOMEM;
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+ *h_errnop = NO_RECOVERY;
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+ return NSS_STATUS_TRYAGAIN;
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+ }
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+
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+ if (!canonical)
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+ canonical = hn;
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+
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+ if (!additional && additional_from_hostname)
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+ additional = hn;
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+ }
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return fill_in_hostent(
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canonical, additional,
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@@ -511,7 +514,6 @@ found:
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errnop, h_errnop,
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ttlp,
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NULL);
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-
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}
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NSS_GETHOSTBYNAME_FALLBACKS(myhostname);
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--
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2.3.0
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