865f46b255
Reapply643f9a0581.64d318ea98was a mismerge during fake rebase. Let's reapply it. Changes include: Added ACL per interface, proxy protocol and bug fixes. Announcement: https://nlnetlabs.nl/news/2022/Oct/13/unbound-1.17.0-released/ Merge commit '643f9a0581e8aac7eb790ced1164748939829826' into main
1035 lines
34 KiB
C
1035 lines
34 KiB
C
/*
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* smallapp/unbound-checkconf.c - config file checker for unbound.conf file.
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*
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* Copyright (c) 2007, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* The config checker checks for syntax and other errors in the unbound.conf
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* file, and can be used to check for errors before the server is started
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* or sigHUPped.
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* Exit status 1 means an error.
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*/
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#include "config.h"
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#include <ctype.h>
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#include "util/log.h"
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#include "util/config_file.h"
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#include "util/module.h"
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#include "util/net_help.h"
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#include "util/regional.h"
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#include "iterator/iterator.h"
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#include "iterator/iter_fwd.h"
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#include "iterator/iter_hints.h"
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#include "validator/validator.h"
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#include "services/localzone.h"
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#include "services/listen_dnsport.h"
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#include "services/view.h"
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#include "services/authzone.h"
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#include "respip/respip.h"
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#include "sldns/sbuffer.h"
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#include "sldns/str2wire.h"
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#endif
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#ifdef HAVE_PWD_H
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#include <pwd.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#ifdef HAVE_GLOB_H
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#include <glob.h>
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#endif
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#ifdef WITH_PYTHONMODULE
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#include "pythonmod/pythonmod.h"
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#endif
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#ifdef CLIENT_SUBNET
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#include "edns-subnet/subnet-whitelist.h"
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#endif
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/** Give checkconf usage, and exit (1). */
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static void
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usage(void)
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{
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printf("Usage: local-unbound-checkconf [file]\n");
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printf(" Checks unbound configuration file for errors.\n");
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printf("file if omitted %s is used.\n", CONFIGFILE);
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printf("-o option print value of option to stdout.\n");
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printf("-f output full pathname with chroot applied, eg. with -o pidfile.\n");
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printf("-h show this usage help.\n");
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printf("Version %s\n", PACKAGE_VERSION);
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printf("BSD licensed, see LICENSE in source package for details.\n");
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printf("Report bugs to %s\n", PACKAGE_BUGREPORT);
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exit(1);
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}
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/**
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* Print given option to stdout
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* @param cfg: config
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* @param opt: option name without trailing :.
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* This is different from config_set_option.
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* @param final: if final pathname with chroot applied has to be printed.
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*/
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static void
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print_option(struct config_file* cfg, const char* opt, int final)
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{
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if(strcmp(opt, "pidfile") == 0 && final) {
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char *p = fname_after_chroot(cfg->pidfile, cfg, 1);
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if(!p) fatal_exit("out of memory");
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printf("%s\n", p);
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free(p);
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return;
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}
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if(strcmp(opt, "auto-trust-anchor-file") == 0 && final) {
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struct config_strlist* s = cfg->auto_trust_anchor_file_list;
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for(; s; s=s->next) {
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char *p = fname_after_chroot(s->str, cfg, 1);
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if(!p) fatal_exit("out of memory");
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printf("%s\n", p);
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free(p);
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}
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return;
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}
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if(!config_get_option(cfg, opt, config_print_func, stdout))
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fatal_exit("cannot print option '%s'", opt);
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}
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/** check if module works with config */
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static void
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check_mod(struct config_file* cfg, struct module_func_block* fb)
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{
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struct module_env env;
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memset(&env, 0, sizeof(env));
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env.cfg = cfg;
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env.scratch = regional_create();
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env.scratch_buffer = sldns_buffer_new(BUFSIZ);
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if(!env.scratch || !env.scratch_buffer)
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fatal_exit("out of memory");
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if(!edns_known_options_init(&env))
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fatal_exit("out of memory");
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if(!(*fb->init)(&env, 0)) {
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fatal_exit("bad config for %s module", fb->name);
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}
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(*fb->deinit)(&env, 0);
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sldns_buffer_free(env.scratch_buffer);
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regional_destroy(env.scratch);
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edns_known_options_delete(&env);
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}
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/** true if addr is a localhost address, 127.0.0.1 or ::1 (with maybe "@port"
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* after it) */
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static int
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str_addr_is_localhost(const char* a)
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{
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if(strncmp(a, "127.", 4) == 0) return 1;
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if(strncmp(a, "::1", 3) == 0) return 1;
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return 0;
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}
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/** check do-not-query-localhost */
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static void
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donotquerylocalhostcheck(struct config_file* cfg)
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{
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if(cfg->donotquery_localhost) {
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struct config_stub* p;
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struct config_strlist* s;
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for(p=cfg->forwards; p; p=p->next) {
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for(s=p->addrs; s; s=s->next) {
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if(str_addr_is_localhost(s->str)) {
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fprintf(stderr, "unbound-checkconf: warning: forward-addr: '%s' is specified for forward-zone: '%s', but do-not-query-localhost: yes means that the address will not be used for lookups.\n",
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s->str, p->name);
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}
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}
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}
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for(p=cfg->stubs; p; p=p->next) {
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for(s=p->addrs; s; s=s->next) {
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if(str_addr_is_localhost(s->str)) {
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fprintf(stderr, "unbound-checkconf: warning: stub-addr: '%s' is specified for stub-zone: '%s', but do-not-query-localhost: yes means that the address will not be used for lookups.\n",
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s->str, p->name);
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}
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}
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}
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}
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}
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/** check localzones */
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static void
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localzonechecks(struct config_file* cfg)
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{
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struct local_zones* zs;
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if(!(zs = local_zones_create()))
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fatal_exit("out of memory");
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if(!local_zones_apply_cfg(zs, cfg))
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fatal_exit("failed local-zone, local-data configuration");
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local_zones_delete(zs);
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}
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/** checks for acl and views */
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static void
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acl_view_tag_checks(struct config_file* cfg, struct views* views)
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{
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int d;
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struct sockaddr_storage a;
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socklen_t alen;
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struct config_str2list* acl;
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struct config_str3list* s3;
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struct config_strbytelist* sb;
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/* acl_view */
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for(acl=cfg->acl_view; acl; acl = acl->next) {
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struct view* v;
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if(!netblockstrtoaddr(acl->str, UNBOUND_DNS_PORT, &a, &alen,
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&d)) {
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fatal_exit("cannot parse access-control-view "
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"address %s %s", acl->str, acl->str2);
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}
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v = views_find_view(views, acl->str2, 0);
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if(!v) {
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fatal_exit("cannot find view for "
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"access-control-view: %s %s",
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acl->str, acl->str2);
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}
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lock_rw_unlock(&v->lock);
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}
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/* acl_tags */
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for(sb=cfg->acl_tags; sb; sb = sb->next) {
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if(!netblockstrtoaddr(sb->str, UNBOUND_DNS_PORT, &a, &alen,
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&d)) {
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fatal_exit("cannot parse access-control-tags "
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"address %s", sb->str);
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}
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}
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/* acl_tag_actions */
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for(s3=cfg->acl_tag_actions; s3; s3 = s3->next) {
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enum localzone_type t;
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if(!netblockstrtoaddr(s3->str, UNBOUND_DNS_PORT, &a, &alen,
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&d)) {
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fatal_exit("cannot parse access-control-tag-actions "
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"address %s %s %s",
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s3->str, s3->str2, s3->str3);
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}
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if(find_tag_id(cfg, s3->str2) == -1) {
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fatal_exit("cannot parse tag %s (define-tag it), "
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"for access-control-tag-actions: %s %s %s",
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s3->str2, s3->str, s3->str2, s3->str3);
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}
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if(!local_zone_str2type(s3->str3, &t)) {
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fatal_exit("cannot parse access control action type %s"
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" for access-control-tag-actions: %s %s %s",
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s3->str3, s3->str, s3->str2, s3->str3);
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}
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}
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/* acl_tag_datas */
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for(s3=cfg->acl_tag_datas; s3; s3 = s3->next) {
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char buf[65536];
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uint8_t rr[LDNS_RR_BUF_SIZE];
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size_t len = sizeof(rr);
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int res;
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if(!netblockstrtoaddr(s3->str, UNBOUND_DNS_PORT, &a, &alen,
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&d)) {
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fatal_exit("cannot parse access-control-tag-datas address %s %s '%s'",
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s3->str, s3->str2, s3->str3);
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}
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if(find_tag_id(cfg, s3->str2) == -1) {
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fatal_exit("cannot parse tag %s (define-tag it), "
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"for access-control-tag-datas: %s %s '%s'",
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s3->str2, s3->str, s3->str2, s3->str3);
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}
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/* '.' is sufficient for validation, and it makes the call to
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* sldns_wirerr_get_type() simpler below. */
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snprintf(buf, sizeof(buf), "%s %s", ".", s3->str3);
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res = sldns_str2wire_rr_buf(buf, rr, &len, NULL, 3600, NULL,
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0, NULL, 0);
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if(res != 0) {
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fatal_exit("cannot parse rr data [char %d] parse error %s, for access-control-tag-datas: %s %s '%s'",
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(int)LDNS_WIREPARSE_OFFSET(res)-2,
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sldns_get_errorstr_parse(res),
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s3->str, s3->str2, s3->str3);
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}
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}
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}
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/** check view and response-ip configuration */
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static void
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view_and_respipchecks(struct config_file* cfg)
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{
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struct views* views = NULL;
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struct respip_set* respip = NULL;
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int ignored = 0;
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if(!(views = views_create()))
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fatal_exit("Could not create views: out of memory");
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if(!(respip = respip_set_create()))
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fatal_exit("Could not create respip set: out of memory");
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if(!views_apply_cfg(views, cfg))
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fatal_exit("Could not set up views");
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if(!respip_global_apply_cfg(respip, cfg))
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fatal_exit("Could not setup respip set");
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if(!respip_views_apply_cfg(views, cfg, &ignored))
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fatal_exit("Could not setup per-view respip sets");
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acl_view_tag_checks(cfg, views);
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views_delete(views);
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respip_set_delete(respip);
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}
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/** emit warnings for IP in hosts */
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static void
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warn_hosts(const char* typ, struct config_stub* list)
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{
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struct sockaddr_storage a;
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socklen_t alen;
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struct config_stub* s;
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struct config_strlist* h;
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for(s=list; s; s=s->next) {
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for(h=s->hosts; h; h=h->next) {
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if(extstrtoaddr(h->str, &a, &alen, UNBOUND_DNS_PORT)) {
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fprintf(stderr, "unbound-checkconf: warning:"
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" %s %s: \"%s\" is an IP%s address, "
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"and when looked up as a host name "
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"during use may not resolve.\n",
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s->name, typ, h->str,
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addr_is_ip6(&a, alen)?"6":"4");
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}
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}
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}
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}
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/** check interface strings */
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static void
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interfacechecks(struct config_file* cfg)
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{
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int d;
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struct sockaddr_storage a;
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socklen_t alen;
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int i, j, i2, j2;
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char*** resif = NULL;
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int* num_resif = NULL;
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char portbuf[32];
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snprintf(portbuf, sizeof(portbuf), "%d", cfg->port);
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if(cfg->num_ifs != 0) {
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resif = (char***)calloc(cfg->num_ifs, sizeof(char**));
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if(!resif) fatal_exit("malloc failure");
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num_resif = (int*)calloc(cfg->num_ifs, sizeof(int));
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if(!num_resif) fatal_exit("malloc failure");
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}
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for(i=0; i<cfg->num_ifs; i++) {
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/* search for duplicates in IP or ifname arguments */
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for(i2=0; i2<i; i2++) {
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if(strcmp(cfg->ifs[i], cfg->ifs[i2]) == 0) {
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fatal_exit("interface: %s present twice, "
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"cannot bind same ports twice.",
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cfg->ifs[i]);
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}
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}
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if(!resolve_interface_names(&cfg->ifs[i], 1, NULL, &resif[i],
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&num_resif[i])) {
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fatal_exit("could not resolve interface names, for %s",
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cfg->ifs[i]);
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}
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/* check for port combinations that are not supported */
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if(if_is_pp2(resif[i][0], portbuf, cfg->proxy_protocol_port)) {
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if(if_is_dnscrypt(resif[i][0], portbuf,
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cfg->dnscrypt_port)) {
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fatal_exit("PROXYv2 and DNSCrypt combination not "
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"supported!");
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} else if(if_is_https(resif[i][0], portbuf,
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cfg->https_port)) {
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fatal_exit("PROXYv2 and DoH combination not "
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"supported!");
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}
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}
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/* search for duplicates in the returned addresses */
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for(j=0; j<num_resif[i]; j++) {
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if(!extstrtoaddr(resif[i][j], &a, &alen, cfg->port)) {
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if(strcmp(cfg->ifs[i], resif[i][j]) != 0)
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fatal_exit("cannot parse interface address '%s' from the interface specified as '%s'",
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resif[i][j], cfg->ifs[i]);
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else
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fatal_exit("cannot parse interface specified as '%s'",
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cfg->ifs[i]);
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}
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for(i2=0; i2<i; i2++) {
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for(j2=0; j2<num_resif[i2]; j2++) {
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if(strcmp(resif[i][j], resif[i2][j2])
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== 0) {
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char info1[1024], info2[1024];
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if(strcmp(cfg->ifs[i], resif[i][j]) != 0)
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snprintf(info1, sizeof(info1), "address %s from interface: %s", resif[i][j], cfg->ifs[i]);
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else snprintf(info1, sizeof(info1), "interface: %s", cfg->ifs[i]);
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if(strcmp(cfg->ifs[i2], resif[i2][j2]) != 0)
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snprintf(info2, sizeof(info2), "address %s from interface: %s", resif[i2][j2], cfg->ifs[i2]);
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else snprintf(info2, sizeof(info2), "interface: %s", cfg->ifs[i2]);
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fatal_exit("%s present twice, cannot bind the same ports twice. The first entry is %s and the second is %s", resif[i][j], info2, info1);
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}
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}
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}
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}
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}
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for(i=0; i<cfg->num_ifs; i++) {
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config_del_strarray(resif[i], num_resif[i]);
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}
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free(resif);
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free(num_resif);
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for(i=0; i<cfg->num_out_ifs; i++) {
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if(!ipstrtoaddr(cfg->out_ifs[i], UNBOUND_DNS_PORT, &a, &alen) &&
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!netblockstrtoaddr(cfg->out_ifs[i], UNBOUND_DNS_PORT, &a, &alen, &d)) {
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fatal_exit("cannot parse outgoing-interface "
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"specified as '%s'", cfg->out_ifs[i]);
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}
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for(j=0; j<cfg->num_out_ifs; j++) {
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if(i!=j && strcmp(cfg->out_ifs[i], cfg->out_ifs[j])==0)
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fatal_exit("outgoing-interface: %s present "
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"twice, cannot bind same ports twice.",
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cfg->out_ifs[i]);
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}
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}
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}
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/** check interface-automatic-ports */
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static void
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ifautomaticportschecks(char* ifautomaticports)
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{
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char* now = ifautomaticports;
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while(now && *now) {
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char* after;
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int extraport;
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while(isspace((unsigned char)*now))
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now++;
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if(!*now)
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break;
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after = now;
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extraport = (int)strtol(now, &after, 10);
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if(extraport < 0 || extraport > 65535)
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fatal_exit("interface-automatic-ports: port out of range at position %d in '%s'", (int)(now-ifautomaticports)+1, ifautomaticports);
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if(extraport == 0 && now == after)
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fatal_exit("interface-automatic-ports: parse error at position %d in '%s'", (int)(now-ifautomaticports)+1, ifautomaticports);
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now = after;
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}
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}
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/** check acl ips */
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static void
|
|
aclchecks(struct config_file* cfg)
|
|
{
|
|
int d;
|
|
struct sockaddr_storage a;
|
|
socklen_t alen;
|
|
struct config_str2list* acl;
|
|
for(acl=cfg->acls; acl; acl = acl->next) {
|
|
if(!netblockstrtoaddr(acl->str, UNBOUND_DNS_PORT, &a, &alen,
|
|
&d)) {
|
|
fatal_exit("cannot parse access control address %s %s",
|
|
acl->str, acl->str2);
|
|
}
|
|
}
|
|
}
|
|
|
|
/** check tcp connection limit ips */
|
|
static void
|
|
tcpconnlimitchecks(struct config_file* cfg)
|
|
{
|
|
int d;
|
|
struct sockaddr_storage a;
|
|
socklen_t alen;
|
|
struct config_str2list* tcl;
|
|
for(tcl=cfg->tcp_connection_limits; tcl; tcl = tcl->next) {
|
|
if(!netblockstrtoaddr(tcl->str, UNBOUND_DNS_PORT, &a, &alen,
|
|
&d)) {
|
|
fatal_exit("cannot parse tcp connection limit address %s %s",
|
|
tcl->str, tcl->str2);
|
|
}
|
|
}
|
|
}
|
|
|
|
/** true if fname is a file */
|
|
static int
|
|
is_file(const char* fname)
|
|
{
|
|
struct stat buf;
|
|
if(stat(fname, &buf) < 0) {
|
|
if(errno==EACCES) {
|
|
printf("warning: no search permission for one of the directories in path: %s\n", fname);
|
|
return 1;
|
|
}
|
|
perror(fname);
|
|
return 0;
|
|
}
|
|
if(S_ISDIR(buf.st_mode)) {
|
|
printf("%s is not a file\n", fname);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/** true if fname is a directory */
|
|
static int
|
|
is_dir(const char* fname)
|
|
{
|
|
struct stat buf;
|
|
if(stat(fname, &buf) < 0) {
|
|
if(errno==EACCES) {
|
|
printf("warning: no search permission for one of the directories in path: %s\n", fname);
|
|
return 1;
|
|
}
|
|
perror(fname);
|
|
return 0;
|
|
}
|
|
if(!(S_ISDIR(buf.st_mode))) {
|
|
printf("%s is not a directory\n", fname);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/** get base dir of a fname */
|
|
static char*
|
|
basedir(char* fname)
|
|
{
|
|
char* rev;
|
|
if(!fname) fatal_exit("out of memory");
|
|
rev = strrchr(fname, '/');
|
|
if(!rev) return NULL;
|
|
if(fname == rev) return NULL;
|
|
rev[0] = 0;
|
|
return fname;
|
|
}
|
|
|
|
/** check chroot for a file string */
|
|
static void
|
|
check_chroot_string(const char* desc, char** ss,
|
|
const char* chrootdir, struct config_file* cfg)
|
|
{
|
|
char* str = *ss;
|
|
if(str && str[0]) {
|
|
*ss = fname_after_chroot(str, cfg, 1);
|
|
if(!*ss) fatal_exit("out of memory");
|
|
if(!is_file(*ss)) {
|
|
if(chrootdir && chrootdir[0])
|
|
fatal_exit("%s: \"%s\" does not exist in "
|
|
"chrootdir %s", desc, str, chrootdir);
|
|
else
|
|
fatal_exit("%s: \"%s\" does not exist",
|
|
desc, str);
|
|
}
|
|
/* put in a new full path for continued checking */
|
|
free(str);
|
|
}
|
|
}
|
|
|
|
/** check file list, every file must be inside the chroot location */
|
|
static void
|
|
check_chroot_filelist(const char* desc, struct config_strlist* list,
|
|
const char* chrootdir, struct config_file* cfg)
|
|
{
|
|
struct config_strlist* p;
|
|
for(p=list; p; p=p->next) {
|
|
check_chroot_string(desc, &p->str, chrootdir, cfg);
|
|
}
|
|
}
|
|
|
|
/** check file list, with wildcard processing */
|
|
static void
|
|
check_chroot_filelist_wild(const char* desc, struct config_strlist* list,
|
|
const char* chrootdir, struct config_file* cfg)
|
|
{
|
|
struct config_strlist* p;
|
|
for(p=list; p; p=p->next) {
|
|
#ifdef HAVE_GLOB
|
|
if(strchr(p->str, '*') || strchr(p->str, '[') ||
|
|
strchr(p->str, '?') || strchr(p->str, '{') ||
|
|
strchr(p->str, '~')) {
|
|
char* s = p->str;
|
|
/* adjust whole pattern for chroot and check later */
|
|
p->str = fname_after_chroot(p->str, cfg, 1);
|
|
free(s);
|
|
} else
|
|
#endif /* HAVE_GLOB */
|
|
check_chroot_string(desc, &p->str, chrootdir, cfg);
|
|
}
|
|
}
|
|
|
|
#ifdef CLIENT_SUBNET
|
|
/** check ECS configuration */
|
|
static void
|
|
ecs_conf_checks(struct config_file* cfg)
|
|
{
|
|
struct ecs_whitelist* whitelist = NULL;
|
|
if(!(whitelist = ecs_whitelist_create()))
|
|
fatal_exit("Could not create ednssubnet whitelist: out of memory");
|
|
if(!ecs_whitelist_apply_cfg(whitelist, cfg))
|
|
fatal_exit("Could not setup ednssubnet whitelist");
|
|
ecs_whitelist_delete(whitelist);
|
|
}
|
|
#endif /* CLIENT_SUBNET */
|
|
|
|
/** check that the modules exist, are compiled in */
|
|
static void
|
|
check_modules_exist(const char* module_conf)
|
|
{
|
|
const char** names = module_list_avail();
|
|
const char* s = module_conf;
|
|
while(*s) {
|
|
int i = 0;
|
|
int is_ok = 0;
|
|
while(*s && isspace((unsigned char)*s))
|
|
s++;
|
|
if(!*s) break;
|
|
while(names[i]) {
|
|
if(strncmp(names[i], s, strlen(names[i])) == 0) {
|
|
is_ok = 1;
|
|
break;
|
|
}
|
|
i++;
|
|
}
|
|
if(is_ok == 0) {
|
|
char n[64];
|
|
size_t j;
|
|
n[0]=0;
|
|
n[sizeof(n)-1]=0;
|
|
for(j=0; j<sizeof(n)-1; j++) {
|
|
if(!s[j] || isspace((unsigned char)s[j])) {
|
|
n[j] = 0;
|
|
break;
|
|
}
|
|
n[j] = s[j];
|
|
}
|
|
fatal_exit("module_conf lists module '%s' but that "
|
|
"module is not available.", n);
|
|
}
|
|
s += strlen(names[i]);
|
|
}
|
|
}
|
|
|
|
/** check configuration for errors */
|
|
static void
|
|
morechecks(struct config_file* cfg)
|
|
{
|
|
warn_hosts("stub-host", cfg->stubs);
|
|
warn_hosts("forward-host", cfg->forwards);
|
|
interfacechecks(cfg);
|
|
ifautomaticportschecks(cfg->if_automatic_ports);
|
|
aclchecks(cfg);
|
|
tcpconnlimitchecks(cfg);
|
|
|
|
if(cfg->verbosity < 0)
|
|
fatal_exit("verbosity value < 0");
|
|
if(cfg->num_threads <= 0 || cfg->num_threads > 10000)
|
|
fatal_exit("num_threads value weird");
|
|
if(!cfg->do_ip4 && !cfg->do_ip6)
|
|
fatal_exit("ip4 and ip6 are both disabled, pointless");
|
|
if(!cfg->do_ip4 && cfg->prefer_ip4)
|
|
fatal_exit("cannot prefer and disable ip4, pointless");
|
|
if(!cfg->do_ip6 && cfg->prefer_ip6)
|
|
fatal_exit("cannot prefer and disable ip6, pointless");
|
|
if(!cfg->do_udp && !cfg->do_tcp)
|
|
fatal_exit("udp and tcp are both disabled, pointless");
|
|
if(cfg->edns_buffer_size > cfg->msg_buffer_size)
|
|
fatal_exit("edns-buffer-size larger than msg-buffer-size, "
|
|
"answers will not fit in processing buffer");
|
|
#ifdef UB_ON_WINDOWS
|
|
w_config_adjust_directory(cfg);
|
|
#endif
|
|
if(cfg->chrootdir && cfg->chrootdir[0] &&
|
|
cfg->chrootdir[strlen(cfg->chrootdir)-1] == '/')
|
|
fatal_exit("chootdir %s has trailing slash '/' please remove.",
|
|
cfg->chrootdir);
|
|
if(cfg->chrootdir && cfg->chrootdir[0] &&
|
|
!is_dir(cfg->chrootdir)) {
|
|
fatal_exit("bad chroot directory");
|
|
}
|
|
if(cfg->directory && cfg->directory[0]) {
|
|
char* ad = fname_after_chroot(cfg->directory, cfg, 0);
|
|
if(!ad) fatal_exit("out of memory");
|
|
if(!is_dir(ad)) fatal_exit("bad chdir directory");
|
|
free(ad);
|
|
}
|
|
if( (cfg->chrootdir && cfg->chrootdir[0]) ||
|
|
(cfg->directory && cfg->directory[0])) {
|
|
if(cfg->pidfile && cfg->pidfile[0]) {
|
|
char* ad = (cfg->pidfile[0]=='/')?strdup(cfg->pidfile):
|
|
fname_after_chroot(cfg->pidfile, cfg, 1);
|
|
char* bd = basedir(ad);
|
|
if(bd && !is_dir(bd))
|
|
fatal_exit("pidfile directory does not exist");
|
|
free(ad);
|
|
}
|
|
if(cfg->logfile && cfg->logfile[0]) {
|
|
char* ad = fname_after_chroot(cfg->logfile, cfg, 1);
|
|
char* bd = basedir(ad);
|
|
if(bd && !is_dir(bd))
|
|
fatal_exit("logfile directory does not exist");
|
|
free(ad);
|
|
}
|
|
}
|
|
|
|
check_chroot_filelist("file with root-hints",
|
|
cfg->root_hints, cfg->chrootdir, cfg);
|
|
check_chroot_filelist("trust-anchor-file",
|
|
cfg->trust_anchor_file_list, cfg->chrootdir, cfg);
|
|
check_chroot_filelist("auto-trust-anchor-file",
|
|
cfg->auto_trust_anchor_file_list, cfg->chrootdir, cfg);
|
|
check_chroot_filelist_wild("trusted-keys-file",
|
|
cfg->trusted_keys_file_list, cfg->chrootdir, cfg);
|
|
#ifdef USE_IPSECMOD
|
|
if(cfg->ipsecmod_enabled && strstr(cfg->module_conf, "ipsecmod")) {
|
|
/* only check hook if enabled */
|
|
check_chroot_string("ipsecmod-hook", &cfg->ipsecmod_hook,
|
|
cfg->chrootdir, cfg);
|
|
}
|
|
#endif
|
|
/* remove chroot setting so that modules are not stripping pathnames*/
|
|
free(cfg->chrootdir);
|
|
cfg->chrootdir = NULL;
|
|
|
|
/* check that the modules listed in module_conf exist */
|
|
check_modules_exist(cfg->module_conf);
|
|
|
|
/* Respip is known to *not* work with dns64. */
|
|
if(strcmp(cfg->module_conf, "iterator") != 0
|
|
&& strcmp(cfg->module_conf, "validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip dns64 validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip dns64 iterator") != 0
|
|
#ifdef WITH_PYTHONMODULE
|
|
&& strcmp(cfg->module_conf, "python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python respip iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python respip validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "validator python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 python validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 validator python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python dns64 iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python dns64 validator iterator") != 0
|
|
#endif
|
|
#ifdef WITH_DYNLIBMODULE
|
|
&& strcmp(cfg->module_conf, "dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib dynlib dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python dynlib dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python dynlib dynlib dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib respip iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib dynlib validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib dynlib dynlib validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python dynlib validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python dynlib dynlib validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python dynlib dynlib dynlib validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib respip validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "validator dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 dynlib validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 validator dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib dns64 iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib dns64 validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib dns64 cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib dns64 validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 dynlib cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 dynlib validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib respip cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib respip validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "cachedb dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip cachedb dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "validator cachedb dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip validator cachedb dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "validator dynlib cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip validator dynlib cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib subnetcache iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib respip subnetcache iterator") != 0
|
|
&& strcmp(cfg->module_conf, "subnetcache dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip subnetcache dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib subnetcache validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib respip subnetcache validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "subnetcache dynlib validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip subnetcache dynlib validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "subnetcache validator dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip subnetcache validator dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib ipsecmod iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib ipsecmod respip iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod dynlib respip iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod respip validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib ipsecmod validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dynlib ipsecmod respip validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod dynlib validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod dynlib respip validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod validator dynlib iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod respip validator dynlib iterator") != 0
|
|
#endif
|
|
#ifdef USE_CACHEDB
|
|
&& strcmp(cfg->module_conf, "validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 cachedb iterator") != 0
|
|
#endif
|
|
#if defined(WITH_PYTHONMODULE) && defined(USE_CACHEDB)
|
|
&& strcmp(cfg->module_conf, "python dns64 cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python dns64 validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 python cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 python validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python respip cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python respip validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "cachedb python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip cachedb python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "validator cachedb python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip validator cachedb python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "validator python cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip validator python cachedb iterator") != 0
|
|
#endif
|
|
#if defined(CLIENT_SUBNET) && defined(USE_CACHEDB)
|
|
&& strcmp(cfg->module_conf, "respip subnetcache validator cachedb iterator") != 0
|
|
&& strcmp(cfg->module_conf, "subnetcache validator cachedb iterator") != 0
|
|
#endif
|
|
#ifdef CLIENT_SUBNET
|
|
&& strcmp(cfg->module_conf, "subnetcache iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip subnetcache iterator") != 0
|
|
&& strcmp(cfg->module_conf, "subnetcache validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip subnetcache validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 subnetcache iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 subnetcache validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 subnetcache respip iterator") != 0
|
|
&& strcmp(cfg->module_conf, "dns64 subnetcache respip validator iterator") != 0
|
|
#endif
|
|
#if defined(WITH_PYTHONMODULE) && defined(CLIENT_SUBNET)
|
|
&& strcmp(cfg->module_conf, "python subnetcache iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python respip subnetcache iterator") != 0
|
|
&& strcmp(cfg->module_conf, "subnetcache python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip subnetcache python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python subnetcache validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python respip subnetcache validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "subnetcache python validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip subnetcache python validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "subnetcache validator python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "respip subnetcache validator python iterator") != 0
|
|
#endif
|
|
#ifdef USE_IPSECMOD
|
|
&& strcmp(cfg->module_conf, "ipsecmod iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod respip iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod respip validator iterator") != 0
|
|
#endif
|
|
#if defined(WITH_PYTHONMODULE) && defined(USE_IPSECMOD)
|
|
&& strcmp(cfg->module_conf, "python ipsecmod iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python ipsecmod respip iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod python respip iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod respip validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python ipsecmod validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "python ipsecmod respip validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod python validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod python respip validator iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod validator python iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipsecmod respip validator python iterator") != 0
|
|
#endif
|
|
#ifdef USE_IPSET
|
|
&& strcmp(cfg->module_conf, "validator ipset iterator") != 0
|
|
&& strcmp(cfg->module_conf, "validator ipset respip iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipset iterator") != 0
|
|
&& strcmp(cfg->module_conf, "ipset respip iterator") != 0
|
|
#endif
|
|
) {
|
|
fatal_exit("module conf '%s' is not known to work",
|
|
cfg->module_conf);
|
|
}
|
|
|
|
#ifdef HAVE_GETPWNAM
|
|
if(cfg->username && cfg->username[0]) {
|
|
if(getpwnam(cfg->username) == NULL)
|
|
fatal_exit("user '%s' does not exist.", cfg->username);
|
|
# ifdef HAVE_ENDPWENT
|
|
endpwent();
|
|
# endif
|
|
}
|
|
#endif
|
|
if(cfg->remote_control_enable && options_remote_is_address(cfg)
|
|
&& cfg->control_use_cert) {
|
|
check_chroot_string("server-key-file", &cfg->server_key_file,
|
|
cfg->chrootdir, cfg);
|
|
check_chroot_string("server-cert-file", &cfg->server_cert_file,
|
|
cfg->chrootdir, cfg);
|
|
if(!is_file(cfg->control_key_file))
|
|
fatal_exit("control-key-file: \"%s\" does not exist",
|
|
cfg->control_key_file);
|
|
if(!is_file(cfg->control_cert_file))
|
|
fatal_exit("control-cert-file: \"%s\" does not exist",
|
|
cfg->control_cert_file);
|
|
}
|
|
|
|
donotquerylocalhostcheck(cfg);
|
|
localzonechecks(cfg);
|
|
view_and_respipchecks(cfg);
|
|
#ifdef CLIENT_SUBNET
|
|
ecs_conf_checks(cfg);
|
|
#endif
|
|
}
|
|
|
|
/** check forwards */
|
|
static void
|
|
check_fwd(struct config_file* cfg)
|
|
{
|
|
struct iter_forwards* fwd = forwards_create();
|
|
if(!fwd || !forwards_apply_cfg(fwd, cfg)) {
|
|
fatal_exit("Could not set forward zones");
|
|
}
|
|
forwards_delete(fwd);
|
|
}
|
|
|
|
/** check hints */
|
|
static void
|
|
check_hints(struct config_file* cfg)
|
|
{
|
|
struct iter_hints* hints = hints_create();
|
|
if(!hints || !hints_apply_cfg(hints, cfg)) {
|
|
fatal_exit("Could not set root or stub hints");
|
|
}
|
|
hints_delete(hints);
|
|
}
|
|
|
|
/** check auth zones */
|
|
static void
|
|
check_auth(struct config_file* cfg)
|
|
{
|
|
int is_rpz = 0;
|
|
struct auth_zones* az = auth_zones_create();
|
|
if(!az || !auth_zones_apply_cfg(az, cfg, 0, &is_rpz, NULL, NULL)) {
|
|
fatal_exit("Could not setup authority zones");
|
|
}
|
|
auth_zones_delete(az);
|
|
}
|
|
|
|
/** check config file */
|
|
static void
|
|
checkconf(const char* cfgfile, const char* opt, int final)
|
|
{
|
|
char oldwd[4096];
|
|
struct config_file* cfg = config_create();
|
|
if(!cfg)
|
|
fatal_exit("out of memory");
|
|
oldwd[0] = 0;
|
|
if(!getcwd(oldwd, sizeof(oldwd))) {
|
|
log_err("cannot getcwd: %s", strerror(errno));
|
|
oldwd[0] = 0;
|
|
}
|
|
if(!config_read(cfg, cfgfile, NULL)) {
|
|
/* config_read prints messages to stderr */
|
|
config_delete(cfg);
|
|
exit(1);
|
|
}
|
|
if(oldwd[0] && chdir(oldwd) == -1)
|
|
log_err("cannot chdir(%s): %s", oldwd, strerror(errno));
|
|
if(opt) {
|
|
print_option(cfg, opt, final);
|
|
config_delete(cfg);
|
|
return;
|
|
}
|
|
morechecks(cfg);
|
|
check_mod(cfg, iter_get_funcblock());
|
|
check_mod(cfg, val_get_funcblock());
|
|
#ifdef WITH_PYTHONMODULE
|
|
if(strstr(cfg->module_conf, "python"))
|
|
check_mod(cfg, pythonmod_get_funcblock());
|
|
#endif
|
|
check_fwd(cfg);
|
|
check_hints(cfg);
|
|
check_auth(cfg);
|
|
printf("unbound-checkconf: no errors in %s\n", cfgfile);
|
|
config_delete(cfg);
|
|
}
|
|
|
|
/** getopt global, in case header files fail to declare it. */
|
|
extern int optind;
|
|
/** getopt global, in case header files fail to declare it. */
|
|
extern char* optarg;
|
|
|
|
/** Main routine for checkconf */
|
|
int main(int argc, char* argv[])
|
|
{
|
|
int c;
|
|
int final = 0;
|
|
const char* f;
|
|
const char* opt = NULL;
|
|
const char* cfgfile = CONFIGFILE;
|
|
checklock_start();
|
|
log_ident_set("unbound-checkconf");
|
|
log_init(NULL, 0, NULL);
|
|
#ifdef USE_WINSOCK
|
|
/* use registry config file in preference to compiletime location */
|
|
if(!(cfgfile=w_lookup_reg_str("Software\\Unbound", "ConfigFile")))
|
|
cfgfile = CONFIGFILE;
|
|
#endif /* USE_WINSOCK */
|
|
/* parse the options */
|
|
while( (c=getopt(argc, argv, "fho:")) != -1) {
|
|
switch(c) {
|
|
case 'f':
|
|
final = 1;
|
|
break;
|
|
case 'o':
|
|
opt = optarg;
|
|
break;
|
|
case '?':
|
|
case 'h':
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
if(argc != 0 && argc != 1)
|
|
usage();
|
|
if(argc == 1)
|
|
f = argv[0];
|
|
else f = cfgfile;
|
|
checkconf(f, opt, final);
|
|
checklock_stop();
|
|
return 0;
|
|
}
|