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Diffstat (limited to '')
| -rw-r--r-- | bin/check/named-checkconf.c | 671 |
1 files changed, 671 insertions, 0 deletions
diff --git a/bin/check/named-checkconf.c b/bin/check/named-checkconf.c new file mode 100644 index 0000000..29ff821 --- /dev/null +++ b/bin/check/named-checkconf.c @@ -0,0 +1,671 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + + +/*! \file */ + +#include <config.h> + +#include <errno.h> +#include <stdbool.h> +#include <stdlib.h> +#include <stdio.h> + +#include <isc/commandline.h> +#include <isc/dir.h> +#include <isc/entropy.h> +#include <isc/hash.h> +#include <isc/log.h> +#include <isc/mem.h> +#include <isc/print.h> +#include <isc/result.h> +#include <isc/string.h> +#include <isc/util.h> + +#include <isccfg/namedconf.h> + +#include <bind9/check.h> + +#include <dns/db.h> +#include <dns/fixedname.h> +#include <dns/log.h> +#include <dns/name.h> +#include <dns/rdataclass.h> +#include <dns/result.h> +#include <dns/rootns.h> +#include <dns/zone.h> + +#include "check-tool.h" + +static const char *program = "named-checkconf"; + +isc_log_t *logc = NULL; + +#define CHECK(r)\ + do { \ + result = (r); \ + if (result != ISC_R_SUCCESS) \ + goto cleanup; \ + } while (0) + +/*% usage */ +ISC_PLATFORM_NORETURN_PRE static void +usage(void) ISC_PLATFORM_NORETURN_POST; + +static void +usage(void) { + fprintf(stderr, "usage: %s [-hjvz] [-p [-x]] [-t directory] " + "[named.conf]\n", program); + exit(1); +} + +/*% directory callback */ +static isc_result_t +directory_callback(const char *clausename, const cfg_obj_t *obj, void *arg) { + isc_result_t result; + const char *directory; + + REQUIRE(strcasecmp("directory", clausename) == 0); + + UNUSED(arg); + UNUSED(clausename); + + /* + * Change directory. + */ + directory = cfg_obj_asstring(obj); + result = isc_dir_chdir(directory); + if (result != ISC_R_SUCCESS) { + cfg_obj_log(obj, logc, ISC_LOG_ERROR, + "change directory to '%s' failed: %s\n", + directory, isc_result_totext(result)); + return (result); + } + + return (ISC_R_SUCCESS); +} + +static bool +get_maps(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) { + int i; + for (i = 0;; i++) { + if (maps[i] == NULL) + return (false); + if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS) + return (true); + } +} + +static bool +get_checknames(const cfg_obj_t **maps, const cfg_obj_t **obj) { + const cfg_listelt_t *element; + const cfg_obj_t *checknames; + const cfg_obj_t *type; + const cfg_obj_t *value; + isc_result_t result; + int i; + + for (i = 0;; i++) { + if (maps[i] == NULL) + return (false); + checknames = NULL; + result = cfg_map_get(maps[i], "check-names", &checknames); + if (result != ISC_R_SUCCESS) + continue; + if (checknames != NULL && !cfg_obj_islist(checknames)) { + *obj = checknames; + return (true); + } + for (element = cfg_list_first(checknames); + element != NULL; + element = cfg_list_next(element)) { + value = cfg_listelt_value(element); + type = cfg_tuple_get(value, "type"); + if (strcasecmp(cfg_obj_asstring(type), "master") != 0) + continue; + *obj = cfg_tuple_get(value, "mode"); + return (true); + } + } +} + +static isc_result_t +configure_hint(const char *zfile, const char *zclass, isc_mem_t *mctx) { + isc_result_t result; + dns_db_t *db = NULL; + dns_rdataclass_t rdclass; + isc_textregion_t r; + + if (zfile == NULL) + return (ISC_R_FAILURE); + + DE_CONST(zclass, r.base); + r.length = strlen(zclass); + result = dns_rdataclass_fromtext(&rdclass, &r); + if (result != ISC_R_SUCCESS) + return (result); + + result = dns_rootns_create(mctx, rdclass, zfile, &db); + if (result != ISC_R_SUCCESS) + return (result); + + dns_db_detach(&db); + return (ISC_R_SUCCESS); +} + +/*% configure the zone */ +static isc_result_t +configure_zone(const char *vclass, const char *view, + const cfg_obj_t *zconfig, const cfg_obj_t *vconfig, + const cfg_obj_t *config, isc_mem_t *mctx) +{ + int i = 0; + isc_result_t result; + const char *zclass; + const char *zname; + const char *zfile = NULL; + const cfg_obj_t *maps[4]; + const cfg_obj_t *mastersobj = NULL; + const cfg_obj_t *inviewobj = NULL; + const cfg_obj_t *zoptions = NULL; + const cfg_obj_t *classobj = NULL; + const cfg_obj_t *typeobj = NULL; + const cfg_obj_t *fileobj = NULL; + const cfg_obj_t *dlzobj = NULL; + const cfg_obj_t *dbobj = NULL; + const cfg_obj_t *obj = NULL; + const cfg_obj_t *fmtobj = NULL; + dns_masterformat_t masterformat; + dns_ttl_t maxttl = 0; + + zone_options = DNS_ZONEOPT_CHECKNS | DNS_ZONEOPT_MANYERRORS; + + zname = cfg_obj_asstring(cfg_tuple_get(zconfig, "name")); + classobj = cfg_tuple_get(zconfig, "class"); + if (!cfg_obj_isstring(classobj)) + zclass = vclass; + else + zclass = cfg_obj_asstring(classobj); + + zoptions = cfg_tuple_get(zconfig, "options"); + maps[i++] = zoptions; + if (vconfig != NULL) + maps[i++] = cfg_tuple_get(vconfig, "options"); + if (config != NULL) { + cfg_map_get(config, "options", &obj); + if (obj != NULL) + maps[i++] = obj; + } + maps[i] = NULL; + + cfg_map_get(zoptions, "in-view", &inviewobj); + if (inviewobj != NULL) + return (ISC_R_SUCCESS); + + cfg_map_get(zoptions, "type", &typeobj); + if (typeobj == NULL) + return (ISC_R_FAILURE); + + /* + * Skip checks when using an alternate data source. + */ + cfg_map_get(zoptions, "database", &dbobj); + if (dbobj != NULL && + strcmp("rbt", cfg_obj_asstring(dbobj)) != 0 && + strcmp("rbt64", cfg_obj_asstring(dbobj)) != 0) + return (ISC_R_SUCCESS); + + cfg_map_get(zoptions, "dlz", &dlzobj); + if (dlzobj != NULL) + return (ISC_R_SUCCESS); + + cfg_map_get(zoptions, "file", &fileobj); + if (fileobj != NULL) + zfile = cfg_obj_asstring(fileobj); + + /* + * Check hints files for hint zones. + * Skip loading checks for any type other than + * master and redirect + */ + if (strcasecmp(cfg_obj_asstring(typeobj), "hint") == 0) + return (configure_hint(zfile, zclass, mctx)); + else if ((strcasecmp(cfg_obj_asstring(typeobj), "master") != 0) && + (strcasecmp(cfg_obj_asstring(typeobj), "redirect") != 0)) + return (ISC_R_SUCCESS); + + /* + * Is the redirect zone configured as a slave? + */ + if (strcasecmp(cfg_obj_asstring(typeobj), "redirect") == 0) { + cfg_map_get(zoptions, "masters", &mastersobj); + if (mastersobj != NULL) + return (ISC_R_SUCCESS); + } + + if (zfile == NULL) + return (ISC_R_FAILURE); + + obj = NULL; + if (get_maps(maps, "check-dup-records", &obj)) { + if (strcasecmp(cfg_obj_asstring(obj), "warn") == 0) { + zone_options |= DNS_ZONEOPT_CHECKDUPRR; + zone_options &= ~DNS_ZONEOPT_CHECKDUPRRFAIL; + } else if (strcasecmp(cfg_obj_asstring(obj), "fail") == 0) { + zone_options |= DNS_ZONEOPT_CHECKDUPRR; + zone_options |= DNS_ZONEOPT_CHECKDUPRRFAIL; + } else if (strcasecmp(cfg_obj_asstring(obj), "ignore") == 0) { + zone_options &= ~DNS_ZONEOPT_CHECKDUPRR; + zone_options &= ~DNS_ZONEOPT_CHECKDUPRRFAIL; + } else + INSIST(0); + } else { + zone_options |= DNS_ZONEOPT_CHECKDUPRR; + zone_options &= ~DNS_ZONEOPT_CHECKDUPRRFAIL; + } + + obj = NULL; + if (get_maps(maps, "check-mx", &obj)) { + if (strcasecmp(cfg_obj_asstring(obj), "warn") == 0) { + zone_options |= DNS_ZONEOPT_CHECKMX; + zone_options &= ~DNS_ZONEOPT_CHECKMXFAIL; + } else if (strcasecmp(cfg_obj_asstring(obj), "fail") == 0) { + zone_options |= DNS_ZONEOPT_CHECKMX; + zone_options |= DNS_ZONEOPT_CHECKMXFAIL; + } else if (strcasecmp(cfg_obj_asstring(obj), "ignore") == 0) { + zone_options &= ~DNS_ZONEOPT_CHECKMX; + zone_options &= ~DNS_ZONEOPT_CHECKMXFAIL; + } else + INSIST(0); + } else { + zone_options |= DNS_ZONEOPT_CHECKMX; + zone_options &= ~DNS_ZONEOPT_CHECKMXFAIL; + } + + obj = NULL; + if (get_maps(maps, "check-integrity", &obj)) { + if (cfg_obj_asboolean(obj)) + zone_options |= DNS_ZONEOPT_CHECKINTEGRITY; + else + zone_options &= ~DNS_ZONEOPT_CHECKINTEGRITY; + } else + zone_options |= DNS_ZONEOPT_CHECKINTEGRITY; + + obj = NULL; + if (get_maps(maps, "check-mx-cname", &obj)) { + if (strcasecmp(cfg_obj_asstring(obj), "warn") == 0) { + zone_options |= DNS_ZONEOPT_WARNMXCNAME; + zone_options &= ~DNS_ZONEOPT_IGNOREMXCNAME; + } else if (strcasecmp(cfg_obj_asstring(obj), "fail") == 0) { + zone_options &= ~DNS_ZONEOPT_WARNMXCNAME; + zone_options &= ~DNS_ZONEOPT_IGNOREMXCNAME; + } else if (strcasecmp(cfg_obj_asstring(obj), "ignore") == 0) { + zone_options |= DNS_ZONEOPT_WARNMXCNAME; + zone_options |= DNS_ZONEOPT_IGNOREMXCNAME; + } else + INSIST(0); + } else { + zone_options |= DNS_ZONEOPT_WARNMXCNAME; + zone_options &= ~DNS_ZONEOPT_IGNOREMXCNAME; + } + + obj = NULL; + if (get_maps(maps, "check-srv-cname", &obj)) { + if (strcasecmp(cfg_obj_asstring(obj), "warn") == 0) { + zone_options |= DNS_ZONEOPT_WARNSRVCNAME; + zone_options &= ~DNS_ZONEOPT_IGNORESRVCNAME; + } else if (strcasecmp(cfg_obj_asstring(obj), "fail") == 0) { + zone_options &= ~DNS_ZONEOPT_WARNSRVCNAME; + zone_options &= ~DNS_ZONEOPT_IGNORESRVCNAME; + } else if (strcasecmp(cfg_obj_asstring(obj), "ignore") == 0) { + zone_options |= DNS_ZONEOPT_WARNSRVCNAME; + zone_options |= DNS_ZONEOPT_IGNORESRVCNAME; + } else + INSIST(0); + } else { + zone_options |= DNS_ZONEOPT_WARNSRVCNAME; + zone_options &= ~DNS_ZONEOPT_IGNORESRVCNAME; + } + + obj = NULL; + if (get_maps(maps, "check-sibling", &obj)) { + if (cfg_obj_asboolean(obj)) + zone_options |= DNS_ZONEOPT_CHECKSIBLING; + else + zone_options &= ~DNS_ZONEOPT_CHECKSIBLING; + } + + obj = NULL; + if (get_maps(maps, "check-spf", &obj)) { + if (strcasecmp(cfg_obj_asstring(obj), "warn") == 0) { + zone_options |= DNS_ZONEOPT_CHECKSPF; + } else if (strcasecmp(cfg_obj_asstring(obj), "ignore") == 0) { + zone_options &= ~DNS_ZONEOPT_CHECKSPF; + } else + INSIST(0); + } else { + zone_options |= DNS_ZONEOPT_CHECKSPF; + } + + obj = NULL; + if (get_checknames(maps, &obj)) { + if (strcasecmp(cfg_obj_asstring(obj), "warn") == 0) { + zone_options |= DNS_ZONEOPT_CHECKNAMES; + zone_options &= ~DNS_ZONEOPT_CHECKNAMESFAIL; + } else if (strcasecmp(cfg_obj_asstring(obj), "fail") == 0) { + zone_options |= DNS_ZONEOPT_CHECKNAMES; + zone_options |= DNS_ZONEOPT_CHECKNAMESFAIL; + } else if (strcasecmp(cfg_obj_asstring(obj), "ignore") == 0) { + zone_options &= ~DNS_ZONEOPT_CHECKNAMES; + zone_options &= ~DNS_ZONEOPT_CHECKNAMESFAIL; + } else + INSIST(0); + } else { + zone_options |= DNS_ZONEOPT_CHECKNAMES; + zone_options |= DNS_ZONEOPT_CHECKNAMESFAIL; + } + + masterformat = dns_masterformat_text; + fmtobj = NULL; + if (get_maps(maps, "masterfile-format", &fmtobj)) { + const char *masterformatstr = cfg_obj_asstring(fmtobj); + if (strcasecmp(masterformatstr, "text") == 0) + masterformat = dns_masterformat_text; + else if (strcasecmp(masterformatstr, "raw") == 0) + masterformat = dns_masterformat_raw; + else if (strcasecmp(masterformatstr, "map") == 0) + masterformat = dns_masterformat_map; + else + INSIST(0); + } + + obj = NULL; + if (get_maps(maps, "max-zone-ttl", &obj)) { + maxttl = cfg_obj_asuint32(obj); + zone_options2 |= DNS_ZONEOPT2_CHECKTTL; + } + + result = load_zone(mctx, zname, zfile, masterformat, + zclass, maxttl, NULL); + if (result != ISC_R_SUCCESS) + fprintf(stderr, "%s/%s/%s: %s\n", view, zname, zclass, + dns_result_totext(result)); + return (result); +} + +/*% configure a view */ +static isc_result_t +configure_view(const char *vclass, const char *view, const cfg_obj_t *config, + const cfg_obj_t *vconfig, isc_mem_t *mctx) +{ + const cfg_listelt_t *element; + const cfg_obj_t *voptions; + const cfg_obj_t *zonelist; + isc_result_t result = ISC_R_SUCCESS; + isc_result_t tresult; + + voptions = NULL; + if (vconfig != NULL) + voptions = cfg_tuple_get(vconfig, "options"); + + zonelist = NULL; + if (voptions != NULL) + (void)cfg_map_get(voptions, "zone", &zonelist); + else + (void)cfg_map_get(config, "zone", &zonelist); + + for (element = cfg_list_first(zonelist); + element != NULL; + element = cfg_list_next(element)) + { + const cfg_obj_t *zconfig = cfg_listelt_value(element); + tresult = configure_zone(vclass, view, zconfig, vconfig, + config, mctx); + if (tresult != ISC_R_SUCCESS) + result = tresult; + } + return (result); +} + +static isc_result_t +config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass, + dns_rdataclass_t *classp) +{ + isc_textregion_t r; + + if (!cfg_obj_isstring(classobj)) { + *classp = defclass; + return (ISC_R_SUCCESS); + } + DE_CONST(cfg_obj_asstring(classobj), r.base); + r.length = strlen(r.base); + return (dns_rdataclass_fromtext(classp, &r)); +} + +/*% load zones from the configuration */ +static isc_result_t +load_zones_fromconfig(const cfg_obj_t *config, isc_mem_t *mctx) { + const cfg_listelt_t *element; + const cfg_obj_t *views; + const cfg_obj_t *vconfig; + isc_result_t result = ISC_R_SUCCESS; + isc_result_t tresult; + + views = NULL; + + (void)cfg_map_get(config, "view", &views); + for (element = cfg_list_first(views); + element != NULL; + element = cfg_list_next(element)) + { + const cfg_obj_t *classobj; + dns_rdataclass_t viewclass; + const char *vname; + char buf[sizeof("CLASS65535")]; + + vconfig = cfg_listelt_value(element); + if (vconfig == NULL) + continue; + + classobj = cfg_tuple_get(vconfig, "class"); + CHECK(config_getclass(classobj, dns_rdataclass_in, + &viewclass)); + if (dns_rdataclass_ismeta(viewclass)) + CHECK(ISC_R_FAILURE); + + dns_rdataclass_format(viewclass, buf, sizeof(buf)); + vname = cfg_obj_asstring(cfg_tuple_get(vconfig, "name")); + tresult = configure_view(buf, vname, config, vconfig, mctx); + if (tresult != ISC_R_SUCCESS) + result = tresult; + } + + if (views == NULL) { + tresult = configure_view("IN", "_default", config, NULL, mctx); + if (tresult != ISC_R_SUCCESS) + result = tresult; + } + +cleanup: + return (result); +} + +static void +output(void *closure, const char *text, int textlen) { + UNUSED(closure); + if (fwrite(text, 1, textlen, stdout) != (size_t)textlen) { + perror("fwrite"); + exit(1); + } +} + +/*% The main processing routine */ +int +main(int argc, char **argv) { + int c; + cfg_parser_t *parser = NULL; + cfg_obj_t *config = NULL; + const char *conffile = NULL; + isc_mem_t *mctx = NULL; + isc_result_t result; + int exit_status = 0; + isc_entropy_t *ectx = NULL; + bool load_zones = false; + bool print = false; + unsigned int flags = 0; + + isc_commandline_errprint = false; + + /* + * Process memory debugging argument first. + */ +#define CMDLINE_FLAGS "dhjm:t:pvxz" + while ((c = isc_commandline_parse(argc, argv, CMDLINE_FLAGS)) != -1) { + switch (c) { + case 'm': + if (strcasecmp(isc_commandline_argument, "record") == 0) + isc_mem_debugging |= ISC_MEM_DEBUGRECORD; + if (strcasecmp(isc_commandline_argument, "trace") == 0) + isc_mem_debugging |= ISC_MEM_DEBUGTRACE; + if (strcasecmp(isc_commandline_argument, "usage") == 0) + isc_mem_debugging |= ISC_MEM_DEBUGUSAGE; + if (strcasecmp(isc_commandline_argument, "size") == 0) + isc_mem_debugging |= ISC_MEM_DEBUGSIZE; + if (strcasecmp(isc_commandline_argument, "mctx") == 0) + isc_mem_debugging |= ISC_MEM_DEBUGCTX; + break; + default: + break; + } + } + isc_commandline_reset = true; + + RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS); + + while ((c = isc_commandline_parse(argc, argv, CMDLINE_FLAGS)) != EOF) { + switch (c) { + case 'd': + debug++; + break; + + case 'j': + nomerge = false; + break; + + case 'm': + break; + + case 't': + result = isc_dir_chroot(isc_commandline_argument); + if (result != ISC_R_SUCCESS) { + fprintf(stderr, "isc_dir_chroot: %s\n", + isc_result_totext(result)); + exit(1); + } + break; + + case 'p': + print = true; + break; + + case 'v': + printf(VERSION "\n"); + exit(0); + + case 'x': + flags |= CFG_PRINTER_XKEY; + break; + + case 'z': + load_zones = true; + docheckmx = false; + docheckns = false; + dochecksrv = false; + break; + + case '?': + if (isc_commandline_option != '?') + fprintf(stderr, "%s: invalid argument -%c\n", + program, isc_commandline_option); + /* FALLTHROUGH */ + case 'h': + usage(); + + default: + fprintf(stderr, "%s: unhandled option -%c\n", + program, isc_commandline_option); + exit(1); + } + } + + if (((flags & CFG_PRINTER_XKEY) != 0) && !print) { + fprintf(stderr, "%s: -x cannot be used without -p\n", program); + exit(1); + } + + if (isc_commandline_index + 1 < argc) + usage(); + if (argv[isc_commandline_index] != NULL) + conffile = argv[isc_commandline_index]; + if (conffile == NULL || conffile[0] == '\0') + conffile = NAMED_CONFFILE; + +#ifdef _WIN32 + InitSockets(); +#endif + + RUNTIME_CHECK(setup_logging(mctx, stdout, &logc) == ISC_R_SUCCESS); + + RUNTIME_CHECK(isc_entropy_create(mctx, &ectx) == ISC_R_SUCCESS); + RUNTIME_CHECK(isc_hash_create(mctx, ectx, DNS_NAME_MAXWIRE) + == ISC_R_SUCCESS); + + dns_result_register(); + + RUNTIME_CHECK(cfg_parser_create(mctx, logc, &parser) == ISC_R_SUCCESS); + + cfg_parser_setcallback(parser, directory_callback, NULL); + + if (cfg_parse_file(parser, conffile, &cfg_type_namedconf, &config) != + ISC_R_SUCCESS) + exit(1); + + result = bind9_check_namedconf(config, logc, mctx); + if (result != ISC_R_SUCCESS) + exit_status = 1; + + if (result == ISC_R_SUCCESS && load_zones) { + result = load_zones_fromconfig(config, mctx); + if (result != ISC_R_SUCCESS) + exit_status = 1; + } + + if (print && exit_status == 0) + cfg_printx(config, flags, output, NULL); + cfg_obj_destroy(parser, &config); + + cfg_parser_destroy(&parser); + + dns_name_destroy(); + + isc_log_destroy(&logc); + + isc_hash_destroy(); + isc_entropy_detach(&ectx); + + isc_mem_destroy(&mctx); + +#ifdef _WIN32 + DestroySockets(); +#endif + + return (exit_status); +} |