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authorPatsy Franklin <pfrankli@redhat.com>2019-01-30 18:49:27 -0500
committerPatsy Franklin <patsy@redhat.com>2019-02-08 14:38:27 -0500
commit11eb21c4659ae0bde83bcd070bc9a0f94fb3576b (patch)
tree466403279df7abfb57f823a245a0112e719c9f63 /nss
parente47d82c99a6db060419b421768aced76bea92997 (diff)
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nss: Add tst-nss-files-hosts-long test [BZ #21915]
When the /etc/hosts file has a line longer than 1028 characters getent ahostsv4 and ahostsv6 will fail. This test performs a getent call on a /etc/hosts file that contains a very long line (greater than 1028) using the test-in-container framework.
Diffstat (limited to 'nss')
-rw-r--r--nss/Makefile3
-rw-r--r--nss/tst-nss-files-hosts-long.c45
-rw-r--r--nss/tst-nss-files-hosts-long.root/etc/hosts8
3 files changed, 55 insertions, 1 deletions
diff --git a/nss/Makefile b/nss/Makefile
index e66e01d..a8caa8a 100644
--- a/nss/Makefile
+++ b/nss/Makefile
@@ -60,7 +60,8 @@ tests = test-netdb test-digits-dots tst-nss-getpwent bug17079 \
xtests = bug-erange
tests-container = \
- tst-nss-test3
+ tst-nss-test3 \
+ tst-nss-files-hosts-long
# Tests which need libdl
ifeq (yes,$(build-shared))
diff --git a/nss/tst-nss-files-hosts-long.c b/nss/tst-nss-files-hosts-long.c
new file mode 100644
index 0000000..32f849e
--- /dev/null
+++ b/nss/tst-nss-files-hosts-long.c
@@ -0,0 +1,45 @@
+/* Test getent doesn't fail with long /etc/hosts lines (Bug 21915).
+ Copyright (C) 2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+/* This test runs getent twice to parse a /etc/hosts with a very
+ long line. Prior to fixing this parser this would crash getent. */
+
+#include <stdlib.h>
+#include <nss.h>
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+ int ret;
+
+ /* Run getent to fetch the IPv4 address for host test4.
+ This forces /etc/hosts to be parsed. */
+ ret = system("getent ahostsv4 test4");
+ if (ret != 0)
+ FAIL_EXIT1("ahostsv4 failed");
+
+ /* Likewise for IPv6. */
+ ret = system("getent ahostsv6 test6");
+ if (ret != 0)
+ FAIL_EXIT1("ahostsv6 failed");
+
+ exit (0);
+}
+
+#include <support/test-driver.c>
diff --git a/nss/tst-nss-files-hosts-long.root/etc/hosts b/nss/tst-nss-files-hosts-long.root/etc/hosts
new file mode 100644
index 0000000..db33f42
--- /dev/null
+++ b/nss/tst-nss-files-hosts-long.root/etc/hosts
@@ -0,0 +1,8 @@
+# This data is valid and short.
+192.168.1.1 test4.example.com test4
+::2 test6.example.com test6
+
+# Long line data is arbitrary and not specifically chosen.
+# They key issue is that it should be long to trigger the parser failure.
+192.168.2.2 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.ru
+#aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa