/* Parse /etc/hosts in multi mode with a trailing long line (bug 21915). Copyright (C) 2017-2023 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; if not, see . */ #include #include #include #include #include #include #include #include #include #include struct support_chroot *chroot_env; #define X10 "XXXXXXXXXX" #define X100 X10 X10 X10 X10 X10 X10 X10 X10 X10 X10 #define X1000 X100 X100 X100 X100 X100 X100 X100 X100 X100 X100 static void prepare (int argc, char **argv) { chroot_env = support_chroot_create ((struct support_chroot_configuration) { .resolv_conf = "", .hosts = "127.0.0.1 localhost localhost.localdomain\n" "::1 localhost localhost.localdomain\n" "192.0.2.1 example.com\n" "#" X1000 X100 "\n", .host_conf = "multi on\n", }); } static int do_test (void) { support_become_root (); if (!support_can_chroot ()) return EXIT_UNSUPPORTED; __nss_configure_lookup ("hosts", "files"); if (dlopen (LIBNSS_FILES_SO, RTLD_LAZY) == NULL) FAIL_EXIT1 ("could not load " LIBNSS_DNS_SO ": %s", dlerror ()); xchroot (chroot_env->path_chroot); errno = ERANGE; h_errno = NETDB_INTERNAL; check_hostent ("gethostbyname example.com", gethostbyname ("example.com"), "name: example.com\n" "address: 192.0.2.1\n"); errno = ERANGE; h_errno = NETDB_INTERNAL; check_hostent ("gethostbyname2 AF_INET example.com", gethostbyname2 ("example.com", AF_INET), "name: example.com\n" "address: 192.0.2.1\n"); { struct addrinfo hints = { .ai_family = AF_UNSPEC, .ai_socktype = SOCK_STREAM, .ai_protocol = IPPROTO_TCP, }; errno = ERANGE; h_errno = NETDB_INTERNAL; struct addrinfo *ai; int ret = getaddrinfo ("example.com", "80", &hints, &ai); check_addrinfo ("example.com AF_UNSPEC", ai, ret, "address: STREAM/TCP 192.0.2.1 80\n"); if (ret == 0) freeaddrinfo (ai); hints.ai_family = AF_INET; errno = ERANGE; h_errno = NETDB_INTERNAL; ret = getaddrinfo ("example.com", "80", &hints, &ai); check_addrinfo ("example.com AF_INET", ai, ret, "address: STREAM/TCP 192.0.2.1 80\n"); if (ret == 0) freeaddrinfo (ai); } support_chroot_free (chroot_env); return 0; } #define PREPARE prepare #include