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Diffstat (limited to '')
| -rw-r--r-- | bin/dnssec/dnssec-importkey.c | 477 |
1 files changed, 477 insertions, 0 deletions
diff --git a/bin/dnssec/dnssec-importkey.c b/bin/dnssec/dnssec-importkey.c new file mode 100644 index 0000000..441f7c3 --- /dev/null +++ b/bin/dnssec/dnssec-importkey.c @@ -0,0 +1,477 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * SPDX-License-Identifier: MPL-2.0 + * + * 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 https://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + +/*! \file */ + +#include <stdbool.h> +#include <stdlib.h> + +#include <isc/attributes.h> +#include <isc/buffer.h> +#include <isc/commandline.h> +#include <isc/hash.h> +#include <isc/mem.h> +#include <isc/print.h> +#include <isc/result.h> +#include <isc/string.h> +#include <isc/util.h> + +#include <dns/callbacks.h> +#include <dns/db.h> +#include <dns/dbiterator.h> +#include <dns/ds.h> +#include <dns/fixedname.h> +#include <dns/keyvalues.h> +#include <dns/log.h> +#include <dns/master.h> +#include <dns/name.h> +#include <dns/rdata.h> +#include <dns/rdataclass.h> +#include <dns/rdataset.h> +#include <dns/rdatasetiter.h> +#include <dns/rdatatype.h> + +#include <dst/dst.h> + +#include "dnssectool.h" + +const char *program = "dnssec-importkey"; + +static dns_rdataclass_t rdclass; +static dns_fixedname_t fixed; +static dns_name_t *name = NULL; +static isc_mem_t *mctx = NULL; +static bool setpub = false, setdel = false; +static bool setttl = false; +static isc_stdtime_t pub = 0, del = 0; +static dns_ttl_t ttl = 0; +static isc_stdtime_t syncadd = 0, syncdel = 0; +static bool setsyncadd = false; +static bool setsyncdel = false; + +static isc_result_t +initname(char *setname) { + isc_result_t result; + isc_buffer_t buf; + + name = dns_fixedname_initname(&fixed); + + isc_buffer_init(&buf, setname, strlen(setname)); + isc_buffer_add(&buf, strlen(setname)); + result = dns_name_fromtext(name, &buf, dns_rootname, 0, NULL); + return (result); +} + +static void +db_load_from_stream(dns_db_t *db, FILE *fp) { + isc_result_t result; + dns_rdatacallbacks_t callbacks; + + dns_rdatacallbacks_init(&callbacks); + result = dns_db_beginload(db, &callbacks); + if (result != ISC_R_SUCCESS) { + fatal("dns_db_beginload failed: %s", isc_result_totext(result)); + } + + result = dns_master_loadstream(fp, name, name, rdclass, 0, &callbacks, + mctx); + if (result != ISC_R_SUCCESS) { + fatal("can't load from input: %s", isc_result_totext(result)); + } + + result = dns_db_endload(db, &callbacks); + if (result != ISC_R_SUCCESS) { + fatal("dns_db_endload failed: %s", isc_result_totext(result)); + } +} + +static isc_result_t +loadset(const char *filename, dns_rdataset_t *rdataset) { + isc_result_t result; + dns_db_t *db = NULL; + dns_dbnode_t *node = NULL; + char setname[DNS_NAME_FORMATSIZE]; + + dns_name_format(name, setname, sizeof(setname)); + + result = dns_db_create(mctx, "rbt", name, dns_dbtype_zone, rdclass, 0, + NULL, &db); + if (result != ISC_R_SUCCESS) { + fatal("can't create database"); + } + + if (strcmp(filename, "-") == 0) { + db_load_from_stream(db, stdin); + filename = "input"; + } else { + result = dns_db_load(db, filename, dns_masterformat_text, + DNS_MASTER_NOTTL); + if (result != ISC_R_SUCCESS && result != DNS_R_SEENINCLUDE) { + fatal("can't load %s: %s", filename, + isc_result_totext(result)); + } + } + + result = dns_db_findnode(db, name, false, &node); + if (result != ISC_R_SUCCESS) { + fatal("can't find %s node in %s", setname, filename); + } + + result = dns_db_findrdataset(db, node, NULL, dns_rdatatype_dnskey, 0, 0, + rdataset, NULL); + + if (result == ISC_R_NOTFOUND) { + fatal("no DNSKEY RR for %s in %s", setname, filename); + } else if (result != ISC_R_SUCCESS) { + fatal("dns_db_findrdataset"); + } + + if (node != NULL) { + dns_db_detachnode(db, &node); + } + if (db != NULL) { + dns_db_detach(&db); + } + return (result); +} + +static void +loadkey(char *filename, unsigned char *key_buf, unsigned int key_buf_size, + dns_rdata_t *rdata) { + isc_result_t result; + dst_key_t *key = NULL; + isc_buffer_t keyb; + isc_region_t r; + + dns_rdata_init(rdata); + + isc_buffer_init(&keyb, key_buf, key_buf_size); + + result = dst_key_fromnamedfile(filename, NULL, DST_TYPE_PUBLIC, mctx, + &key); + if (result != ISC_R_SUCCESS) { + fatal("invalid keyfile name %s: %s", filename, + isc_result_totext(result)); + } + + if (verbose > 2) { + char keystr[DST_KEY_FORMATSIZE]; + + dst_key_format(key, keystr, sizeof(keystr)); + fprintf(stderr, "%s: %s\n", program, keystr); + } + + result = dst_key_todns(key, &keyb); + if (result != ISC_R_SUCCESS) { + fatal("can't decode key"); + } + + isc_buffer_usedregion(&keyb, &r); + dns_rdata_fromregion(rdata, dst_key_class(key), dns_rdatatype_dnskey, + &r); + + rdclass = dst_key_class(key); + + name = dns_fixedname_initname(&fixed); + dns_name_copy(dst_key_name(key), name); + + dst_key_free(&key); +} + +static void +emit(const char *dir, dns_rdata_t *rdata) { + isc_result_t result; + char keystr[DST_KEY_FORMATSIZE]; + char pubname[1024]; + char priname[1024]; + isc_buffer_t buf; + dst_key_t *key = NULL, *tmp = NULL; + + isc_buffer_init(&buf, rdata->data, rdata->length); + isc_buffer_add(&buf, rdata->length); + result = dst_key_fromdns(name, rdclass, &buf, mctx, &key); + if (result != ISC_R_SUCCESS) { + fatal("dst_key_fromdns: %s", isc_result_totext(result)); + } + + isc_buffer_init(&buf, pubname, sizeof(pubname)); + result = dst_key_buildfilename(key, DST_TYPE_PUBLIC, dir, &buf); + if (result != ISC_R_SUCCESS) { + fatal("Failed to build public key filename: %s", + isc_result_totext(result)); + } + isc_buffer_init(&buf, priname, sizeof(priname)); + result = dst_key_buildfilename(key, DST_TYPE_PRIVATE, dir, &buf); + if (result != ISC_R_SUCCESS) { + fatal("Failed to build private key filename: %s", + isc_result_totext(result)); + } + + result = dst_key_fromfile( + dst_key_name(key), dst_key_id(key), dst_key_alg(key), + DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, dir, mctx, &tmp); + if (result == ISC_R_SUCCESS) { + if (dst_key_isprivate(tmp) && !dst_key_isexternal(tmp)) { + fatal("Private key already exists in %s", priname); + } + dst_key_free(&tmp); + } + + dst_key_setexternal(key, true); + if (setpub) { + dst_key_settime(key, DST_TIME_PUBLISH, pub); + } + if (setdel) { + dst_key_settime(key, DST_TIME_DELETE, del); + } + if (setsyncadd) { + dst_key_settime(key, DST_TIME_SYNCPUBLISH, syncadd); + } + if (setsyncdel) { + dst_key_settime(key, DST_TIME_SYNCDELETE, syncdel); + } + + if (setttl) { + dst_key_setttl(key, ttl); + } + + result = dst_key_tofile(key, DST_TYPE_PUBLIC | DST_TYPE_PRIVATE, dir); + if (result != ISC_R_SUCCESS) { + dst_key_format(key, keystr, sizeof(keystr)); + fatal("Failed to write key %s: %s", keystr, + isc_result_totext(result)); + } + printf("%s\n", pubname); + + isc_buffer_clear(&buf); + result = dst_key_buildfilename(key, DST_TYPE_PRIVATE, dir, &buf); + if (result != ISC_R_SUCCESS) { + fatal("Failed to build private key filename: %s", + isc_result_totext(result)); + } + printf("%s\n", priname); + dst_key_free(&key); +} + +noreturn static void +usage(void); + +static void +usage(void) { + fprintf(stderr, "Usage:\n"); + fprintf(stderr, " %s options [-K dir] keyfile\n\n", program); + fprintf(stderr, " %s options -f file [keyname]\n\n", program); + fprintf(stderr, "Version: %s\n", PACKAGE_VERSION); + fprintf(stderr, "Options:\n"); + fprintf(stderr, " -f file: read key from zone file\n"); + fprintf(stderr, " -K <directory>: directory in which to store " + "the key files\n"); + fprintf(stderr, " -L ttl: set default key TTL\n"); + fprintf(stderr, " -v <verbose level>\n"); + fprintf(stderr, " -V: print version information\n"); + fprintf(stderr, " -h: print usage and exit\n"); + fprintf(stderr, "Timing options:\n"); + fprintf(stderr, " -P date/[+-]offset/none: set/unset key " + "publication date\n"); + fprintf(stderr, " -P sync date/[+-]offset/none: set/unset " + "CDS and CDNSKEY publication date\n"); + fprintf(stderr, " -D date/[+-]offset/none: set/unset key " + "deletion date\n"); + fprintf(stderr, " -D sync date/[+-]offset/none: set/unset " + "CDS and CDNSKEY deletion date\n"); + + exit(-1); +} + +int +main(int argc, char **argv) { + char *classname = NULL; + char *filename = NULL, *dir = NULL, *namestr; + char *endp; + int ch; + isc_result_t result; + isc_log_t *log = NULL; + dns_rdataset_t rdataset; + dns_rdata_t rdata; + isc_stdtime_t now; + + dns_rdata_init(&rdata); + isc_stdtime_get(&now); + + if (argc == 1) { + usage(); + } + + isc_mem_create(&mctx); + + isc_commandline_errprint = false; + +#define CMDLINE_FLAGS "D:f:hK:L:P:v:V" + while ((ch = isc_commandline_parse(argc, argv, CMDLINE_FLAGS)) != -1) { + switch (ch) { + case 'D': + /* -Dsync ? */ + if (isoptarg("sync", argv, usage)) { + if (setsyncdel) { + fatal("-D sync specified more than " + "once"); + } + + syncdel = strtotime(isc_commandline_argument, + now, now, &setsyncdel); + break; + } + /* -Ddnskey ? */ + (void)isoptarg("dnskey", argv, usage); + if (setdel) { + fatal("-D specified more than once"); + } + + del = strtotime(isc_commandline_argument, now, now, + &setdel); + break; + case 'K': + dir = isc_commandline_argument; + if (strlen(dir) == 0U) { + fatal("directory must be non-empty string"); + } + break; + case 'L': + ttl = strtottl(isc_commandline_argument); + setttl = true; + break; + case 'P': + /* -Psync ? */ + if (isoptarg("sync", argv, usage)) { + if (setsyncadd) { + fatal("-P sync specified more than " + "once"); + } + + syncadd = strtotime(isc_commandline_argument, + now, now, &setsyncadd); + break; + } + /* -Pdnskey ? */ + (void)isoptarg("dnskey", argv, usage); + if (setpub) { + fatal("-P specified more than once"); + } + + pub = strtotime(isc_commandline_argument, now, now, + &setpub); + break; + case 'f': + filename = isc_commandline_argument; + break; + case 'v': + verbose = strtol(isc_commandline_argument, &endp, 0); + if (*endp != '\0') { + fatal("-v must be followed by a number"); + } + break; + case '?': + if (isc_commandline_option != '?') { + fprintf(stderr, "%s: invalid argument -%c\n", + program, isc_commandline_option); + } + FALLTHROUGH; + case 'h': + /* Does not return. */ + usage(); + + case 'V': + /* Does not return. */ + version(program); + + default: + fprintf(stderr, "%s: unhandled option -%c\n", program, + isc_commandline_option); + exit(1); + } + } + + rdclass = strtoclass(classname); + + if (argc < isc_commandline_index + 1 && filename == NULL) { + fatal("the key file name was not specified"); + } + if (argc > isc_commandline_index + 1) { + fatal("extraneous arguments"); + } + + result = dst_lib_init(mctx, NULL); + if (result != ISC_R_SUCCESS) { + fatal("could not initialize dst: %s", + isc_result_totext(result)); + } + + setup_logging(mctx, &log); + + dns_rdataset_init(&rdataset); + + if (filename != NULL) { + if (argc < isc_commandline_index + 1) { + /* using filename as zone name */ + namestr = filename; + } else { + namestr = argv[isc_commandline_index]; + } + + result = initname(namestr); + if (result != ISC_R_SUCCESS) { + fatal("could not initialize name %s", namestr); + } + + result = loadset(filename, &rdataset); + + if (result != ISC_R_SUCCESS) { + fatal("could not load DNSKEY set: %s\n", + isc_result_totext(result)); + } + + for (result = dns_rdataset_first(&rdataset); + result == ISC_R_SUCCESS; + result = dns_rdataset_next(&rdataset)) + { + dns_rdata_init(&rdata); + dns_rdataset_current(&rdataset, &rdata); + emit(dir, &rdata); + } + } else { + unsigned char key_buf[DST_KEY_MAXSIZE]; + + loadkey(argv[isc_commandline_index], key_buf, DST_KEY_MAXSIZE, + &rdata); + + emit(dir, &rdata); + } + + if (dns_rdataset_isassociated(&rdataset)) { + dns_rdataset_disassociate(&rdataset); + } + cleanup_logging(&log); + dst_lib_destroy(); + if (verbose > 10) { + isc_mem_stats(mctx, stdout); + } + isc_mem_destroy(&mctx); + + fflush(stdout); + if (ferror(stdout)) { + fprintf(stderr, "write error\n"); + return (1); + } else { + return (0); + } +} |