signer.c revision 3de75141d2e042a1db4c58b397ea4fc905cecf6e
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews/*
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews * Copyright (C) 1999, 2000 Internet Software Consortium.
0dfc0745c4ec343c687adf752a8e04231b0aadb6Tinderbox User *
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews * Permission to use, copy, modify, and distribute this software for any
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews * purpose with or without fee is hereby granted, provided that the above
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews * copyright notice and this permission notice appear in all copies.
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews *
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
bf8267aa453e5d2a735ed732a043b77a0b355b20Mark Andrews * SOFTWARE.
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews */
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews#include <config.h>
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews#include <stdlib.h>
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <isc/commandline.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <isc/mem.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <isc/string.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <isc/util.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/db.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/dbiterator.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/dnssec.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/keyvalues.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/log.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/nxt.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/rdata.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/rdatalist.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/rdataset.h>
20914534e691755ddcc3b3a5e8d10e910270a3d9Jeremy C. Reed#include <dns/rdatasetiter.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/rdatastruct.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/rdatatype.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/result.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/secalg.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/time.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dns/zone.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#include <dst/result.h>
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#define PROGRAM "signer"
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉/*#define USE_ZONESTATUS*/
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉#define BUFSIZE 2048
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrewstypedef struct signer_key_struct signer_key_t;
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrewstypedef struct signer_array_struct signer_array_t;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉struct signer_key_struct {
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews dst_key_t *key;
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews isc_boolean_t isdefault;
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews ISC_LINK(signer_key_t) link;
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews};
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrewsstruct signer_array_struct {
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews unsigned char array[BUFSIZE];
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews ISC_LINK(signer_array_t) link;
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews};
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrewsstatic ISC_LIST(signer_key_t) keylist;
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrewsstatic isc_stdtime_t starttime = 0, endtime = 0, now;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static int cycle = -1;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static int verbose;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static isc_boolean_t tryverify = ISC_FALSE;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static isc_mem_t *mctx = NULL;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static inline void
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉fatal(char *message) {
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 fprintf(stderr, "%s: %s\n", PROGRAM, message);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 exit(1);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉}
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static inline void
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉check_result(isc_result_t result, char *message) {
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 if (result != ISC_R_SUCCESS) {
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 fprintf(stderr, "%s: %s: %s\n", PROGRAM, message,
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_result_totext(result));
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 exit(1);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 }
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉}
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static void
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉vbprintf(int level, const char *fmt, ...) {
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 va_list ap;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 if (level > verbose)
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 return;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 va_start(ap, fmt);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 fprintf(stderr, "%s: ", PROGRAM);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 vfprintf(stderr, fmt, ap);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 va_end(ap);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉}
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉/* Not thread-safe! */
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static char *
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉nametostr(dns_name_t *name) {
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_buffer_t b;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_region_t r;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 static char data[1025];
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_buffer_init(&b, data, sizeof(data));
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 dns_name_totext(name, ISC_FALSE, &b);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_buffer_usedregion(&b, &r);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 r.base[r.length] = 0;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 return (char *) r.base;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉}
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉/* Not thread-safe! */
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static char *
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉typetostr(const dns_rdatatype_t type) {
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_buffer_t b;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_region_t r;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 static char data[10];
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_buffer_init(&b, data, sizeof(data));
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 dns_rdatatype_totext(type, &b);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_buffer_usedregion(&b, &r);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 r.base[r.length] = 0;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 return (char *) r.base;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉}
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉/* Not thread-safe! */
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static char *
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉algtostr(const dns_secalg_t alg) {
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_buffer_t b;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_region_t r;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 static char data[10];
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_buffer_init(&b, data, sizeof(data));
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 dns_secalg_totext(alg, &b);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 isc_buffer_usedregion(&b, &r);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 r.base[r.length] = 0;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 return (char *) r.base;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉}
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static inline void
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉set_bit(unsigned char *array, unsigned int index, unsigned int bit) {
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 unsigned int byte, shift, mask;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 byte = array[index / 8];
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 shift = 7 - (index % 8);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 mask = 1 << shift;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 if (bit)
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 array[index / 8] |= mask;
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 else
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉 array[index / 8] &= (~mask & 0xFF);
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉}
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉
d8680445d6212d5552ea8a22fd2f9951b11c4b10Tatuya JINMEI 神明達哉static void
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrewssignwithkey(dns_name_t *name, dns_rdataset_t *rdataset, dns_rdata_t *rdata,
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews dst_key_t *key, isc_buffer_t *b)
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews{
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews isc_result_t result;
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt dns_rdata_init(rdata);
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt result = dns_dnssec_sign(name, rdataset, key, &starttime, &endtime,
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt mctx, b, rdata);
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt check_result(result, "dns_dnssec_sign()");
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt if (tryverify) {
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt result = dns_dnssec_verify(name, rdataset, key,
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt ISC_TRUE, mctx, rdata);
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt if (result == ISC_R_SUCCESS)
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt vbprintf(3, "\tsignature verified\n");
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt else
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt vbprintf(3, "\tsignature failed to verify\n");
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt }
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt}
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt
597642c0baaf66172ca44104ed5a18957a969748Evan Huntstatic inline isc_boolean_t
597642c0baaf66172ca44104ed5a18957a969748Evan Huntissigningkey(signer_key_t *key) {
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt return (key->isdefault);
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt}
597642c0baaf66172ca44104ed5a18957a969748Evan Hunt
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Huntstatic inline isc_boolean_t
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Huntiszonekey(signer_key_t *key, dns_db_t *db) {
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt char origin[1024];
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt isc_buffer_t b;
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt isc_result_t result;
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt isc_buffer_init(&b, origin, sizeof(origin));
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt result = dns_name_totext(dns_db_origin(db), ISC_FALSE, &b);
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt check_result(result, "dns_name_totext()");
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt return (ISC_TF(strcasecmp(dst_key_name(key->key), origin) == 0 &&
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt (dst_key_flags(key->key) & DNS_KEYFLAG_OWNERMASK) ==
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt DNS_KEYOWNER_ZONE));
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt}
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt/*
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt * Finds the key that generated a SIG, if possible. First look at the keys
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt * that we've loaded already, and then see if there's a key on disk.
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Hunt */
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Huntstatic signer_key_t *
e11a0c114cdaf8f7e7832e9f1a011138248093a6Evan Huntkeythatsigned(dns_rdata_sig_t *sig) {
a39a5f4d816ca7d3f43106712ca668dd1ab31d69Mark Andrews char *keyname;
3635d8f9104e70e141a8f191a0e6c1502ceed2f3Mark Andrews isc_result_t result;
dst_key_t *pubkey = NULL, *privkey = NULL;
signer_key_t *key;
keyname = nametostr(&sig->signer);
key = ISC_LIST_HEAD(keylist);
while (key != NULL) {
if (sig->keyid == dst_key_id(key->key) &&
sig->algorithm == dst_key_alg(key->key) &&
strcasecmp(keyname, dst_key_name(key->key)) == 0)
return key;
key = ISC_LIST_NEXT(key, link);
}
result = dst_key_fromfile(keyname, sig->keyid, sig->algorithm,
DST_TYPE_PUBLIC, mctx, &pubkey);
if (result != ISC_R_SUCCESS)
return (NULL);
key = isc_mem_get(mctx, sizeof(signer_key_t));
if (key == NULL)
check_result(ISC_R_FAILURE, "isc_mem_get");
result = dst_key_fromfile(keyname, sig->keyid, sig->algorithm,
DST_TYPE_PRIVATE, mctx, &privkey);
if (result == ISC_R_SUCCESS) {
key->key = privkey;
dst_key_free(pubkey);
}
else
key->key = pubkey;
key->isdefault = ISC_FALSE;
ISC_LIST_APPEND(keylist, key, link);
return key;
}
/*
* Check to see if we expect to find a key at this name. If we see a SIG
* and can't find the signing key that we expect to find, we drop the sig.
* I'm not sure if this is completely correct, but it seems to work.
*/
static isc_boolean_t
expecttofindkey(dns_name_t *name, dns_db_t *db, dns_dbversion_t *version) {
unsigned int options = DNS_DBFIND_NOWILD;
dns_fixedname_t fname;
isc_result_t result;
dns_fixedname_init(&fname);
result = dns_db_find(db, name, version, dns_rdatatype_key, options,
0, NULL, dns_fixedname_name(&fname), NULL, NULL);
switch (result) {
case ISC_R_SUCCESS:
case DNS_R_NXDOMAIN:
case DNS_R_NXRRSET:
return ISC_TRUE;
case DNS_R_DELEGATION:
case DNS_R_CNAME:
case DNS_R_DNAME:
return ISC_FALSE;
default:
check_result(result, "dns_db_find");
return ISC_FALSE; /* removes a warning */
}
}
static inline isc_boolean_t
setverifies(dns_name_t *name, dns_rdataset_t *set, signer_key_t *key,
dns_rdata_t *sig)
{
isc_result_t result;
result = dns_dnssec_verify(name, set, key->key, ISC_FALSE, mctx, sig);
return (ISC_TF(result == ISC_R_SUCCESS));
}
#define allocbufferandrdata \
isc_buffer_t b; \
trdata = isc_mem_get(mctx, sizeof(dns_rdata_t)); \
tdata = isc_mem_get(mctx, sizeof(signer_array_t)); \
ISC_LIST_APPEND(arraylist, tdata, link); \
if (trdata == NULL || tdata == NULL) \
check_result(ISC_R_FAILURE, "isc_mem_get"); \
isc_buffer_init(&b, tdata->array, sizeof(tdata->array));
/*
* Signs a set. Goes through contortions to decide if each SIG should
* be dropped or retained, and then determines if any new SIGs need to
* be generated.
*/
static void
signset(dns_db_t *db, dns_dbversion_t *version, dns_dbnode_t *node,
dns_name_t *name, dns_rdataset_t *set)
{
dns_rdatalist_t siglist;
dns_rdataset_t sigset, oldsigset;
dns_rdata_t oldsigrdata;
dns_rdata_t *trdata;
dns_rdata_sig_t sig;
signer_key_t *key;
isc_result_t result;
isc_boolean_t notsigned = ISC_TRUE, nosigs = ISC_FALSE;
isc_boolean_t wassignedby[256], nowsignedby[256];
signer_array_t *tdata;
ISC_LIST(signer_array_t) arraylist;
int i;
ISC_LIST_INIT(siglist.rdata);
ISC_LIST_INIT(arraylist);
for (i = 0; i < 256; i++)
wassignedby[i] = nowsignedby[i] = ISC_FALSE;
dns_rdataset_init(&oldsigset);
result = dns_db_findrdataset(db, node, version, dns_rdatatype_sig,
set->type, 0, &oldsigset, NULL);
if (result == ISC_R_NOTFOUND) {
result = ISC_R_SUCCESS;
nosigs = ISC_TRUE;
}
check_result(result, "dns_db_findrdataset()");
vbprintf(1, "%s/%s:\n", nametostr(name), typetostr(set->type));
if (!nosigs) {
result = dns_rdataset_first(&oldsigset);
while (result == ISC_R_SUCCESS) {
isc_boolean_t expired, future;
isc_boolean_t keep = ISC_FALSE, resign = ISC_FALSE;
dns_rdataset_current(&oldsigset, &oldsigrdata);
result = dns_rdata_tostruct(&oldsigrdata, &sig, mctx);
check_result(result, "dns_rdata_tostruct");
expired = ISC_TF(now + cycle > sig.timeexpire);
future = ISC_TF(now < sig.timesigned);
key = keythatsigned(&sig);
if (sig.timesigned > sig.timeexpire) {
/* sig is dropped and not replaced */
vbprintf(2, "\tsig by %s/%s/%d dropped - "
"invalid validity period\n",
nametostr(&sig.signer),
algtostr(sig.algorithm),
sig.keyid);
}
else if (key == NULL && !future &&
expecttofindkey(&sig.signer, db, version))
{
/* sig is dropped and not replaced */
vbprintf(2, "\tsig by %s/%s/%d dropped - "
"private key not found\n",
nametostr(&sig.signer),
algtostr(sig.algorithm),
sig.keyid);
}
else if (key == NULL || future) {
vbprintf(2, "\tsig by %s/%s/%d %s - "
"key not found\n",
expired ? "retained" : "dropped",
nametostr(&sig.signer),
algtostr(sig.algorithm),
sig.keyid);
if (!expired)
keep = ISC_TRUE;
}
else if (issigningkey(key)) {
if (!expired &&
setverifies(name, set, key, &oldsigrdata))
{
vbprintf(2,
"\tsig by %s/%s/%d retained\n",
nametostr(&sig.signer),
algtostr(sig.algorithm),
sig.keyid);
keep = ISC_TRUE;
wassignedby[sig.algorithm] = ISC_TRUE;
}
else {
vbprintf(2,
"\tsig by %s/%s/%d dropped - "
"%s\n",
nametostr(&sig.signer),
algtostr(sig.algorithm),
sig.keyid,
expired ? "expired" :
"failed to verify");
wassignedby[sig.algorithm] = ISC_TRUE;
resign = ISC_TRUE;
}
}
else if (iszonekey(key, db)) {
if (!expired &&
setverifies(name, set, key, &oldsigrdata))
{
vbprintf(2,
"\tsig by %s/%s/%d retained\n",
nametostr(&sig.signer),
algtostr(sig.algorithm),
sig.keyid);
keep = ISC_TRUE;
wassignedby[sig.algorithm] = ISC_TRUE;
nowsignedby[sig.algorithm] = ISC_TRUE;
}
else {
vbprintf(2,
"\tsig by %s/%s/%d "
"dropped - %s\n",
nametostr(&sig.signer),
algtostr(sig.algorithm),
sig.keyid,
expired ? "expired" :
"failed to verify");
wassignedby[sig.algorithm] = ISC_TRUE;
if (dst_key_isprivate(key->key))
resign = ISC_TRUE;
}
}
else if (!expired) {
vbprintf(2, "\tsig by %s/%s/%d retained\n",
nametostr(&sig.signer),
algtostr(sig.algorithm),
sig.keyid);
keep = ISC_TRUE;
}
else {
vbprintf(2, "\tsig by %s/%s/%d expired\n",
nametostr(&sig.signer),
algtostr(sig.algorithm),
sig.keyid);
}
if (keep) {
allocbufferandrdata;
result = dns_rdata_fromstruct(trdata,
set->rdclass,
dns_rdatatype_sig,
&sig, &b);
nowsignedby[sig.algorithm] = ISC_TRUE;
ISC_LIST_APPEND(siglist.rdata, trdata, link);
}
else if (resign) {
allocbufferandrdata;
vbprintf(1, "\tresigning with key %s/%s/%d\n",
dst_key_name(key->key),
algtostr(dst_key_alg(key->key)),
dst_key_id(key->key));
signwithkey(name, set, trdata, key->key, &b);
nowsignedby[sig.algorithm] = ISC_TRUE;
ISC_LIST_APPEND(siglist.rdata, trdata, link);
}
dns_rdata_freestruct(&sig);
result = dns_rdataset_next(&oldsigset);
}
if (result == ISC_R_NOMORE)
result = ISC_R_SUCCESS;
check_result(result, "dns_db_dns_rdataset_first()/next()");
dns_rdataset_disassociate(&oldsigset);
}
for (i = 0; i < 256; i++)
if (wassignedby[i] != 0) {
notsigned = ISC_FALSE;
break;
}
key = ISC_LIST_HEAD(keylist);
while (key != NULL) {
int alg = dst_key_alg(key->key);
if (key->isdefault &&
(notsigned || (wassignedby[alg] && !nowsignedby[alg])))
{
allocbufferandrdata;
vbprintf(1, "\tsigning with key %s/%s/%d\n",
dst_key_name(key->key),
algtostr(dst_key_alg(key->key)),
dst_key_id(key->key));
signwithkey(name, set, trdata, key->key, &b);
ISC_LIST_APPEND(siglist.rdata, trdata, link);
}
key = ISC_LIST_NEXT(key, link);
}
if (!ISC_LIST_EMPTY(siglist.rdata)) {
siglist.rdclass = set->rdclass;
siglist.type = dns_rdatatype_sig;
siglist.covers = set->type;
if (endtime - starttime < set->ttl)
siglist.ttl = endtime - starttime;
else
siglist.ttl = set->ttl;
dns_rdataset_init(&sigset);
result = dns_rdatalist_tordataset(&siglist, &sigset);
check_result(result, "dns_rdatalist_tordataset");
result = dns_db_addrdataset(db, node, version, 0, &sigset,
0, NULL);
if (result == DNS_R_UNCHANGED)
result = ISC_R_SUCCESS;
check_result(result, "dns_db_addrdataset");
dns_rdataset_disassociate(&sigset);
}
else if (!nosigs) {
#if 0
/*
* If this is compiled in, running a signed set through the
* signer with no private keys causes DNS_R_BADDB to occur
* later. This is bad.
*/
result = dns_db_deleterdataset(db, node, version,
dns_rdatatype_sig, set->type);
if (result == ISC_R_NOTFOUND)
result = ISC_R_SUCCESS;
check_result(result, "dns_db_deleterdataset");
#endif
fatal("File is currently signed but no private keys were "
"found. This won't work.");
}
trdata = ISC_LIST_HEAD(siglist.rdata);
while (trdata != NULL) {
dns_rdata_t *next = ISC_LIST_NEXT(trdata, link);
isc_mem_put(mctx, trdata, sizeof(dns_rdata_t));
trdata = next;
}
tdata = ISC_LIST_HEAD(arraylist);
while (tdata != NULL) {
signer_array_t *next = ISC_LIST_NEXT(tdata, link);
isc_mem_put(mctx, tdata, sizeof(signer_array_t));
tdata = next;
}
}
#ifndef USE_ZONESTATUS
/* Determine if a KEY set contains a null key */
static isc_boolean_t
hasnullkey(dns_rdataset_t *rdataset) {
isc_result_t result;
dns_rdata_t rdata;
isc_boolean_t found = ISC_FALSE;
result = dns_rdataset_first(rdataset);
while (result == ISC_R_SUCCESS) {
dst_key_t *key = NULL;
dns_rdataset_current(rdataset, &rdata);
result = dns_dnssec_keyfromrdata(dns_rootname,
&rdata, mctx, &key);
check_result(result, "dns_dnssec_keyfromrdata()");
if (dst_key_isnullkey(key))
found = ISC_TRUE;
dst_key_free(key);
if (found == ISC_TRUE)
return (ISC_TRUE);
result = dns_rdataset_next(rdataset);
}
if (result != ISC_R_NOMORE)
check_result(result, "iteration over keys");
return (ISC_FALSE);
}
#endif
/*
* Looks for signatures of the zone keys by the parent, and imports them
* if found.
*/
static void
importparentsig(dns_db_t *db, dns_dbversion_t *version, dns_dbnode_t *node,
dns_name_t *name, dns_rdataset_t *set)
{
unsigned char filename[256];
isc_buffer_t b;
isc_region_t r;
dns_db_t *newdb = NULL;
dns_dbnode_t *newnode = NULL;
dns_rdataset_t newset, sigset;
dns_rdata_t rdata, newrdata;
isc_result_t result;
isc_buffer_init(&b, filename, sizeof(filename) - 10);
result = dns_name_totext(name, ISC_FALSE, &b);
check_result(result, "dns_name_totext()");
isc_buffer_usedregion(&b, &r);
strcpy((char *)r.base + r.length, "signedkey");
result = dns_db_create(mctx, "rbt", name, ISC_FALSE, dns_db_class(db),
0, NULL, &newdb);
check_result(result, "dns_db_create()");
result = dns_db_load(newdb, (char *)filename);
if (result != ISC_R_SUCCESS)
goto failure;
result = dns_db_findnode(newdb, name, ISC_FALSE, &newnode);
if (result != ISC_R_SUCCESS)
goto failure;
dns_rdataset_init(&newset);
dns_rdataset_init(&sigset);
result = dns_db_findrdataset(newdb, newnode, NULL, dns_rdatatype_key,
0, 0, &newset, &sigset);
if (result != ISC_R_SUCCESS)
goto failure;
if (dns_rdataset_count(set) != dns_rdataset_count(&newset))
goto failure;
dns_rdata_init(&rdata);
dns_rdata_init(&newrdata);
result = dns_rdataset_first(set);
check_result(result, "dns_rdata_first()");
for (; result == ISC_R_SUCCESS; result = dns_rdataset_next(set)) {
dns_rdataset_current(set, &rdata);
result = dns_rdataset_first(&newset);
check_result(result, "dns_rdata_first()");
for (;
result == ISC_R_SUCCESS;
result = dns_rdataset_next(&newset))
{
dns_rdataset_current(&newset, &newrdata);
if (dns_rdata_compare(&rdata, &newrdata) == 0)
break;
}
if (result != ISC_R_SUCCESS)
break;
}
if (result != ISC_R_NOMORE)
goto failure;
vbprintf(2, "found the parent's signature of our zone key\n");
result = dns_db_addrdataset(db, node, version, 0, &sigset, 0, NULL);
check_result(result, "dns_db_addrdataset");
dns_rdataset_disassociate(&newset);
dns_rdataset_disassociate(&sigset);
failure:
if (newnode != NULL)
dns_db_detachnode(newdb, &newnode);
if (newdb != NULL)
dns_db_detach(&newdb);
}
/*
* Looks for our signatures of child keys. If present, inform the caller,
* who will set the zone status (KEY) bit in the NXT record.
*/
static isc_boolean_t
haschildkey(dns_db_t *db, dns_name_t *name) {
unsigned char filename[256];
isc_buffer_t b;
isc_region_t r;
dns_db_t *newdb = NULL;
dns_dbnode_t *newnode = NULL;
dns_rdataset_t set, sigset;
dns_rdata_t sigrdata;
isc_result_t result;
isc_boolean_t found = ISC_FALSE;
dns_rdata_sig_t sig;
signer_key_t *key;
isc_buffer_init(&b, filename, sizeof(filename) - 10);
result = dns_name_totext(name, ISC_FALSE, &b);
check_result(result, "dns_name_totext()");
isc_buffer_usedregion(&b, &r);
strcpy((char *)r.base + r.length, "signedkey");
result = dns_db_create(mctx, "rbt", name, ISC_FALSE, dns_db_class(db),
0, NULL, &newdb);
check_result(result, "dns_db_create()");
result = dns_db_load(newdb, (char *)filename);
if (result != ISC_R_SUCCESS)
goto failure;
result = dns_db_findnode(newdb, name, ISC_FALSE, &newnode);
if (result != ISC_R_SUCCESS)
goto failure;
dns_rdataset_init(&set);
dns_rdataset_init(&sigset);
result = dns_db_findrdataset(newdb, newnode, NULL, dns_rdatatype_key,
0, 0, &set, &sigset);
if (result != ISC_R_SUCCESS)
goto failure;
if (!dns_rdataset_isassociated(&set) ||
!dns_rdataset_isassociated(&sigset))
goto disfail;
result = dns_rdataset_first(&sigset);
check_result(result, "dns_rdataset_first()");
dns_rdata_init(&sigrdata);
for (; result == ISC_R_SUCCESS; result = dns_rdataset_next(&sigset)) {
dns_rdataset_current(&sigset, &sigrdata);
result = dns_rdata_tostruct(&sigrdata, &sig, mctx);
if (result != ISC_R_SUCCESS)
goto disfail;
key = keythatsigned(&sig);
dns_rdata_freestruct(&sig);
if (key == NULL)
goto disfail;
result = dns_dnssec_verify(name, &set, key->key,
ISC_FALSE, mctx, &sigrdata);
if (result == ISC_R_SUCCESS) {
found = ISC_TRUE;
break;
}
}
disfail:
if (dns_rdataset_isassociated(&set))
dns_rdataset_disassociate(&set);
if (dns_rdataset_isassociated(&sigset))
dns_rdataset_disassociate(&sigset);
failure:
if (newnode != NULL)
dns_db_detachnode(newdb, &newnode);
if (newdb != NULL)
dns_db_detach(&newdb);
return (found);
}
/*
* Signs all records at a name. This mostly just signs each set individually,
* but also adds the SIG bit to any NXTs generated earlier, deals with
* parent/child KEY signatures, and handles other exceptional cases.
*/
static void
signname(dns_db_t *db, dns_dbversion_t *version, dns_dbnode_t *node,
dns_name_t *name, isc_boolean_t atorigin)
{
isc_result_t result;
dns_rdata_t rdata;
dns_rdataset_t rdataset;
dns_rdatasetiter_t *rdsiter;
isc_boolean_t isdelegation = ISC_FALSE;
isc_boolean_t childkey = ISC_FALSE;
static int warnwild = 0;
if (dns_name_iswildcard(name)) {
if (warnwild++ == 0)
fprintf(stderr, "%s: warning: BIND 9 doesn't "
"handle wildcards in secure zones\n", PROGRAM);
else
fprintf(stderr, "%s: warning: wildcard name seen: %s\n",
PROGRAM, nametostr(name));
}
if (!atorigin) {
dns_rdataset_t nsset;
dns_rdataset_init(&nsset);
result = dns_db_findrdataset(db, node, version,
dns_rdatatype_ns, 0, 0, &nsset,
NULL);
/* Is this a delegation point? */
if (result == ISC_R_SUCCESS) {
isdelegation = ISC_TRUE;
dns_rdataset_disassociate(&nsset);
}
}
dns_rdataset_init(&rdataset);
rdsiter = NULL;
result = dns_db_allrdatasets(db, node, version, 0, &rdsiter);
check_result(result, "dns_db_allrdatasets()");
result = dns_rdatasetiter_first(rdsiter);
while (result == ISC_R_SUCCESS) {
dns_rdatasetiter_current(rdsiter, &rdataset);
/* If this is a SIG set, skip it. */
if (rdataset.type == dns_rdatatype_sig)
goto skip;
/*
* If this is a KEY set at the apex, look for a signedkey file.
*/
if (rdataset.type == dns_rdatatype_key && atorigin) {
importparentsig(db, version, node, name, &rdataset);
goto skip;
}
/*
* If this name is a delegation point, skip all records
* except an NXT set, unless we're using null keys, in
* which case we need to check for a null key and add one
* if it's not present.
*/
if (isdelegation) {
switch (rdataset.type) {
case dns_rdatatype_nxt:
childkey = haschildkey(db, name);
break;
#ifndef USE_ZONESTATUS
case dns_rdatatype_key:
if (hasnullkey(&rdataset))
break;
goto skip;
#endif
default:
goto skip;
}
}
/*
* There probably should be a dns_nxtsetbit, but it can get
* complicated if we need to extend the length of the
* bit set. In this case, since the NXT bit is set and
* SIG < NXT and KEY < NXT, the easy way works.
*/
if (rdataset.type == dns_rdatatype_nxt) {
unsigned char *nxt_bits;
dns_name_t nxtname;
isc_region_t r, r2;
unsigned char keydata[4];
dst_key_t *dstkey;
isc_buffer_t b;
result = dns_rdataset_first(&rdataset);
check_result(result, "dns_rdataset_first()");
dns_rdataset_current(&rdataset, &rdata);
dns_rdata_toregion(&rdata, &r);
dns_name_init(&nxtname, NULL);
dns_name_fromregion(&nxtname, &r);
dns_name_toregion(&nxtname, &r2);
nxt_bits = r.base + r2.length;
set_bit(nxt_bits, dns_rdatatype_sig, 1);
#ifdef USE_ZONESTATUS
if (isdelegation && childkey) {
set_bit(nxt_bits, dns_rdatatype_key, 1);
vbprintf(2, "found a child key for %s, "
"setting KEY bit in NXT\n",
nametostr(name));
}
#else
if (isdelegation && !childkey) {
dns_rdataset_t keyset;
dns_rdatalist_t keyrdatalist;
dns_rdata_t keyrdata;
dns_rdataset_init(&keyset);
result = dns_db_findrdataset(db, node, version,
dns_rdatatype_key,
0, 0, &keyset,
NULL);
if (result == ISC_R_SUCCESS &&
hasnullkey(&keyset))
goto alreadyhavenullkey;
if (result == ISC_R_NOTFOUND)
result = ISC_R_SUCCESS;
check_result(result, "dns_db_findrdataset");
if (dns_rdataset_isassociated(&keyset))
dns_rdataset_disassociate(&keyset);
vbprintf(2, "no child key for %s, "
"adding null key\n",
nametostr(name));
dns_rdatalist_init(&keyrdatalist);
dstkey = NULL;
result = dst_key_generate("", DNS_KEYALG_DSA,
0, 0,
DNS_KEYTYPE_NOKEY,
DNS_KEYPROTO_DNSSEC,
mctx, &dstkey);
check_result(result, "dst_key_generate");
isc_buffer_init(&b, keydata, sizeof keydata);
result = dst_key_todns(dstkey, &b);
dst_key_free(dstkey);
isc_buffer_usedregion(&b, &r);
dns_rdata_fromregion(&keyrdata,
rdataset.rdclass,
dns_rdatatype_key, &r);
ISC_LIST_APPEND(keyrdatalist.rdata, &keyrdata,
link);
keyrdatalist.rdclass = rdataset.rdclass;
keyrdatalist.type = dns_rdatatype_key;
keyrdatalist.covers = 0;
keyrdatalist.ttl = rdataset.ttl;
result =
dns_rdatalist_tordataset(&keyrdatalist,
&keyset);
check_result(result,
"dns_rdatalist_tordataset");
dns_db_addrdataset(db, node, version, 0,
&keyset, DNS_DBADD_MERGE,
NULL);
set_bit(nxt_bits, dns_rdatatype_key, 1);
signset(db, version, node, name, &keyset);
dns_rdataset_disassociate(&keyset);
alreadyhavenullkey:
;
}
#endif
}
signset(db, version, node, name, &rdataset);
skip:
dns_rdataset_disassociate(&rdataset);
result = dns_rdatasetiter_next(rdsiter);
}
if (result != ISC_R_NOMORE)
fatal("rdataset iteration failed");
dns_rdatasetiter_destroy(&rdsiter);
}
static inline isc_boolean_t
active_node(dns_db_t *db, dns_dbversion_t *version, dns_dbnode_t *node) {
dns_rdatasetiter_t *rdsiter;
isc_boolean_t active = ISC_FALSE;
isc_result_t result;
dns_rdataset_t rdataset;
dns_rdataset_init(&rdataset);
rdsiter = NULL;
result = dns_db_allrdatasets(db, node, version, 0, &rdsiter);
check_result(result, "dns_db_allrdatasets()");
result = dns_rdatasetiter_first(rdsiter);
while (result == ISC_R_SUCCESS) {
dns_rdatasetiter_current(rdsiter, &rdataset);
if (rdataset.type != dns_rdatatype_nxt)
active = ISC_TRUE;
dns_rdataset_disassociate(&rdataset);
if (!active)
result = dns_rdatasetiter_next(rdsiter);
else
result = ISC_R_NOMORE;
}
if (result != ISC_R_NOMORE)
fatal("rdataset iteration failed");
dns_rdatasetiter_destroy(&rdsiter);
if (!active) {
/*
* Make sure there is no NXT record for this node.
*/
result = dns_db_deleterdataset(db, node, version,
dns_rdatatype_nxt, 0);
if (result == DNS_R_UNCHANGED)
result = ISC_R_SUCCESS;
check_result(result, "dns_db_deleterdataset");
}
return (active);
}
static inline isc_result_t
next_active(dns_db_t *db, dns_dbversion_t *version, dns_dbiterator_t *dbiter,
dns_name_t *name, dns_dbnode_t **nodep)
{
isc_result_t result;
isc_boolean_t active;
do {
active = ISC_FALSE;
result = dns_dbiterator_current(dbiter, nodep, name);
if (result == ISC_R_SUCCESS) {
active = active_node(db, version, *nodep);
if (!active) {
dns_db_detachnode(db, nodep);
result = dns_dbiterator_next(dbiter);
}
}
} while (result == ISC_R_SUCCESS && !active);
return (result);
}
static inline isc_result_t
next_nonglue(dns_db_t *db, dns_dbversion_t *version, dns_dbiterator_t *dbiter,
dns_name_t *name, dns_dbnode_t **nodep, dns_name_t *origin,
dns_name_t *lastcut)
{
isc_result_t result;
do {
result = next_active(db, version, dbiter, name, nodep);
if (result == ISC_R_SUCCESS) {
if (dns_name_issubdomain(name, origin) &&
(lastcut == NULL ||
!dns_name_issubdomain(name, lastcut)))
return (ISC_R_SUCCESS);
dns_db_detachnode(db, nodep);
result = dns_dbiterator_next(dbiter);
}
} while (result == ISC_R_SUCCESS);
return (result);
}
/*
* Generates NXTs and SIGs for each non-glue name in the zone.
*/
static void
signzone(dns_db_t *db, dns_dbversion_t *version) {
isc_result_t result, nxtresult;
dns_dbnode_t *node, *nextnode, *curnode;
dns_fixedname_t fname, fnextname, fcurname;
dns_name_t *name, *nextname, *target, *curname, *lastcut;
dns_dbiterator_t *dbiter;
isc_boolean_t atorigin = ISC_TRUE;
dns_name_t *origin;
dns_rdataset_t soaset;
dns_rdata_t soarr;
dns_rdata_soa_t soa;
dns_ttl_t zonettl;
dns_fixedname_init(&fname);
name = dns_fixedname_name(&fname);
dns_fixedname_init(&fnextname);
nextname = dns_fixedname_name(&fnextname);
dns_fixedname_init(&fcurname);
curname = dns_fixedname_name(&fcurname);
origin = dns_db_origin(db);
dns_rdataset_init(&soaset);
result = dns_db_find(db, origin, version, dns_rdatatype_soa,
0, 0, NULL, name, &soaset, NULL);
check_result(result, "dns_db_find");
result = dns_rdataset_first(&soaset);
check_result(result, "dns_rdataset_first");
dns_rdataset_current(&soaset, &soarr);
result = dns_rdata_tostruct(&soarr, &soa, mctx);
check_result(result, "dns_rdataset_tostruct");
zonettl = soa.minimum;
dns_rdata_freestruct(&soa);
dns_rdataset_disassociate(&soaset);
lastcut = NULL;
dbiter = NULL;
result = dns_db_createiterator(db, ISC_FALSE, &dbiter);
check_result(result, "dns_db_createiterator()");
result = dns_dbiterator_first(dbiter);
node = NULL;
dns_name_clone(origin, name);
result = next_nonglue(db, version, dbiter, name, &node, origin,
lastcut);
while (result == ISC_R_SUCCESS) {
nextnode = NULL;
curnode = NULL;
dns_dbiterator_current(dbiter, &curnode, curname);
if (!atorigin) {
dns_rdatasetiter_t *rdsiter = NULL;
dns_rdataset_t set;
dns_rdataset_init(&set);
result = dns_db_allrdatasets(db, curnode, version,
0, &rdsiter);
check_result(result, "dns_db_allrdatasets");
result = dns_rdatasetiter_first(rdsiter);
while (result == ISC_R_SUCCESS) {
dns_rdatasetiter_current(rdsiter, &set);
if (set.type == dns_rdatatype_ns) {
dns_rdataset_disassociate(&set);
break;
}
dns_rdataset_disassociate(&set);
result = dns_rdatasetiter_next(rdsiter);
}
if (result != ISC_R_SUCCESS && result != ISC_R_NOMORE)
fatal("rdataset iteration failed");
if (result == ISC_R_SUCCESS) {
if (lastcut != NULL)
dns_name_free(lastcut, mctx);
else {
lastcut = isc_mem_get(mctx,
sizeof(dns_name_t));
if (lastcut == NULL)
fatal("allocation failure");
}
dns_name_init(lastcut, NULL);
result = dns_name_dup(curname, mctx, lastcut);
check_result(result, "dns_name_dup");
}
dns_rdatasetiter_destroy(&rdsiter);
}
result = dns_dbiterator_next(dbiter);
if (result == ISC_R_SUCCESS)
result = next_nonglue(db, version, dbiter, nextname,
&nextnode, origin, lastcut);
if (result == ISC_R_SUCCESS)
target = nextname;
else if (result == ISC_R_NOMORE)
target = origin;
else {
target = NULL; /* Make compiler happy. */
fatal("db iteration failed");
}
nxtresult = dns_buildnxt(db, version, node, target, zonettl);
check_result(nxtresult, "dns_buildnxt()");
signname(db, version, node, curname, atorigin);
atorigin = ISC_FALSE;
dns_db_detachnode(db, &node);
dns_db_detachnode(db, &curnode);
node = nextnode;
}
if (result != ISC_R_NOMORE)
fatal("db iteration failed");
if (lastcut != NULL) {
dns_name_free(lastcut, mctx);
isc_mem_put(mctx, lastcut, sizeof(dns_name_t));
}
dns_dbiterator_destroy(&dbiter);
}
static void
loadzone(char *file, char *origin, dns_zone_t **zone) {
isc_buffer_t b, b2;
unsigned char namedata[1024];
int len;
dns_name_t name;
isc_result_t result;
len = strlen(origin);
isc_buffer_init(&b, origin, len);
isc_buffer_add(&b, len);
isc_buffer_init(&b2, namedata, sizeof(namedata));
dns_name_init(&name, NULL);
result = dns_name_fromtext(&name, &b, dns_rootname, ISC_FALSE, &b2);
check_result(result, "dns_name_fromtext()");
result = dns_zone_create(zone, mctx);
check_result(result, "dns_zone_create()");
dns_zone_settype(*zone, dns_zone_master);
result = dns_zone_setdbtype(*zone, "rbt");
check_result(result, "dns_zone_setdbtype()");
result = dns_zone_setdatabase(*zone, file);
check_result(result, "dns_zone_setdatabase()");
result = dns_zone_setorigin(*zone, &name);
check_result(result, "dns_zone_origin()");
dns_zone_setclass(*zone, dns_rdataclass_in); /* XXX */
result = dns_zone_load(*zone);
check_result(result, "dns_zone_load()");
}
static void
getdb(dns_zone_t *zone, dns_db_t **db, dns_dbversion_t **version) {
isc_result_t result;
*db = NULL;
result = dns_zone_getdb(zone, db);
check_result(result, "dns_zone_getdb()");
result = dns_db_newversion(*db, version);
check_result(result, "dns_db_newversion()");
}
/*
* Finds all public zone keys in the zone, and attempts to load the
* private keys from disk.
*/
static void
loadzonekeys(dns_db_t *db, dns_dbversion_t *version) {
dns_name_t *origin;
dns_dbnode_t *node;
isc_result_t result;
dst_key_t *keys[20];
unsigned int nkeys, i;
origin = dns_db_origin(db);
node = NULL;
result = dns_db_findnode(db, origin, ISC_FALSE, &node);
check_result(result, "dns_db_findnode()");
result = dns_dnssec_findzonekeys(db, version, node, origin, mctx,
20, keys, &nkeys);
if (result == ISC_R_NOTFOUND)
result = ISC_R_SUCCESS;
check_result(result, "dns_dnssec_findzonekeys()");
for (i = 0; i < nkeys; i++) {
signer_key_t *key;
key = isc_mem_get(mctx, sizeof(signer_key_t));
if (key == NULL)
check_result(ISC_R_FAILURE, "isc_mem_get(key)");
key->key = keys[i];
key->isdefault = ISC_FALSE;
ISC_LIST_APPEND(keylist, key, link);
}
dns_db_detachnode(db, &node);
}
static void
dumpzone(dns_zone_t *zone, char *filename) {
isc_result_t result;
FILE *fp;
fp = fopen(filename, "w");
if (fp == NULL) {
fprintf(stderr, "%s: failure opening %s\n", PROGRAM, filename);
exit(-1);
}
result = dns_zone_dumptostream(zone, fp);
check_result(result, "dns_zone_dump");
fclose(fp);
}
static isc_stdtime_t
strtotime(char *str, isc_int64_t now, isc_int64_t base) {
isc_int64_t val, offset;
isc_result_t result;
char *endp = "";
if (str[0] == '+') {
offset = strtol(str + 1, &endp, 0);
val = base + offset;
}
else if (strncmp(str, "now+", 4) == 0) {
offset = strtol(str + 4, &endp, 0);
val = now + offset;
}
else {
result = dns_time64_fromtext(str, &val);
check_result(result, "dns_time64_fromtext()");
}
if (*endp != '\0')
check_result(ISC_R_FAILURE, "strtol()");
return ((isc_stdtime_t) val);
}
static void
usage() {
fprintf(stderr, "Usage:\n");
fprintf(stderr, "\tsigner [options] zonefile [keys]\n");
fprintf(stderr, "\n");
fprintf(stderr, "Options: (default value in parenthesis) \n");
fprintf(stderr, "\t-s YYYYMMDDHHMMSS|+offset:\n");
fprintf(stderr, "\t\tSIG start time - absolute|offset (now)\n");
fprintf(stderr, "\t-e YYYYMMDDHHMMSS|+offset|\"now\"+offset]:\n");
fprintf(stderr, "\t\tSIG end time - absolute|from start|from now (now + 30 days)\n");
fprintf(stderr, "\t-c ttl:\n");
fprintf(stderr, "\t\tcycle period - regenerate "
"if < cycle from end ( (end-start)/4 )\n");
fprintf(stderr, "\t-v level:\n");
fprintf(stderr, "\t\tverbose level (0)\n");
fprintf(stderr, "\t-o origin:\n");
fprintf(stderr, "\t\tzone origin (name of zonefile)\n");
fprintf(stderr, "\t-f outfile:\n");
fprintf(stderr, "\t\tfile the signed zone is written in " \
"(zonefile + .signed)\n");
fprintf(stderr, "\t-a:\n");
fprintf(stderr, "\t\tverify generated signatures "
"(if currently valid)\n");
fprintf(stderr, "\n");
fprintf(stderr, "Signing Keys: ");
fprintf(stderr, "(default: all zone keys that have private keys)\n");
fprintf(stderr, "\tkeyfile (Kname+alg+id)\n");
exit(0);
}
static void
setup_logging(int level, isc_log_t **logp) {
isc_result_t result;
isc_logdestination_t destination;
isc_logconfig_t *logconfig;
isc_log_t *log = 0;
RUNTIME_CHECK(isc_log_create(mctx, &log, &logconfig)
== ISC_R_SUCCESS);
isc_log_setcontext(log);
dns_log_init(log);
dns_log_setcontext(log);
/*
* Set up a channel similar to default_stderr except:
* - the logging level is passed in
* - the logging level is printed
* - no time stamp is printed
*/
destination.file.stream = stderr;
destination.file.name = NULL;
destination.file.versions = ISC_LOG_ROLLNEVER;
destination.file.maximum_size = 0;
result = isc_log_createchannel(logconfig, "stderr",
ISC_LOG_TOFILEDESC,
level,
&destination,
ISC_LOG_PRINTLEVEL);
check_result(result, "isc_log_createchannel()");
RUNTIME_CHECK(isc_log_usechannel(logconfig, "stderr",
NULL, NULL) == ISC_R_SUCCESS);
*logp = log;
}
int
main(int argc, char *argv[]) {
int i, ch;
char *startstr = NULL, *endstr = NULL;
char *origin = NULL, *file = NULL, *output = NULL;
char *endp;
dns_zone_t *zone;
dns_db_t *db;
dns_dbversion_t *version;
signer_key_t *key;
isc_result_t result;
isc_log_t *log = NULL;
int loglevel;
dns_result_register();
result = isc_mem_create(0, 0, &mctx);
check_result(result, "isc_mem_create()");
while ((ch = isc_commandline_parse(argc, argv, "s:e:c:v:o:f:ah"))
!= -1) {
switch (ch) {
case 's':
startstr = isc_mem_strdup(mctx,
isc_commandline_argument);
if (startstr == NULL)
check_result(ISC_R_FAILURE,
"isc_mem_strdup()");
break;
case 'e':
endstr = isc_mem_strdup(mctx,
isc_commandline_argument);
if (endstr == NULL)
check_result(ISC_R_FAILURE,
"isc_mem_strdup()");
break;
case 'c':
endp = NULL;
cycle = strtol(isc_commandline_argument, &endp, 0);
if (*endp != '\0')
check_result(ISC_R_FAILURE, "strtol()");
break;
case 'v':
endp = NULL;
verbose = strtol(isc_commandline_argument, &endp, 0);
if (*endp != '\0')
check_result(ISC_R_FAILURE, "strtol()");
break;
case 'o':
origin = isc_mem_strdup(mctx,
isc_commandline_argument);
if (origin == NULL)
check_result(ISC_R_FAILURE,
"isc_mem_strdup()");
break;
case 'f':
output = isc_mem_strdup(mctx,
isc_commandline_argument);
if (output == NULL)
check_result(ISC_R_FAILURE,
"isc_mem_strdup()");
break;
case 'a':
tryverify = ISC_TRUE;
break;
case 'h':
default:
usage();
}
}
isc_stdtime_get(&now);
if (startstr != NULL) {
starttime = strtotime(startstr, now, now);
isc_mem_free(mctx, startstr);
}
else
starttime = now;
if (endstr != NULL) {
endtime = strtotime(endstr, now, starttime);
isc_mem_free(mctx, endstr);
}
else
endtime = starttime + (30 * 24 * 60 * 60);
if (cycle == -1) {
cycle = (endtime - starttime) / 4;
}
switch (verbose) {
case 0:
/*
* We want to see warnings about things like out-of-zone
* data in the master file even when not verbose.
*/
loglevel = ISC_LOG_WARNING;
break;
case 1:
loglevel = ISC_LOG_INFO;
break;
default:
loglevel = ISC_LOG_DEBUG(verbose - 2 + 1);
break;
}
setup_logging(loglevel, &log);
argc -= isc_commandline_index;
argv += isc_commandline_index;
if (argc < 1)
usage();
file = isc_mem_strdup(mctx, argv[0]);
if (file == NULL)
check_result(ISC_R_FAILURE, "isc_mem_strdup()");
argc -= 1;
argv += 1;
if (output == NULL) {
output = isc_mem_allocate(mctx,
strlen(file) + strlen(".signed") + 1);
if (output == NULL)
check_result(ISC_R_FAILURE, "isc_mem_allocate()");
sprintf(output, "%s.signed", file);
}
if (origin == NULL) {
origin = isc_mem_allocate(mctx, strlen(file) + 2);
if (origin == NULL)
check_result(ISC_R_FAILURE, "isc_mem_allocate()");
strcpy(origin, file);
if (file[strlen(file) - 1] != '.')
strcat(origin, ".");
}
zone = NULL;
loadzone(file, origin, &zone);
db = NULL;
version = NULL;
getdb(zone, &db, &version);
ISC_LIST_INIT(keylist);
loadzonekeys(db, version);
if (argc == 0) {
signer_key_t *key;
key = ISC_LIST_HEAD(keylist);
while (key != NULL) {
key->isdefault = ISC_TRUE;
key = ISC_LIST_NEXT(key, link);
}
}
else {
for (i = 0; i < argc; i++) {
isc_uint16_t id;
int alg;
char *namestr = NULL;
isc_buffer_t b;
isc_buffer_init(&b, argv[i], strlen(argv[i]));
isc_buffer_add(&b, strlen(argv[i]));
result = dst_key_parsefilename(&b, mctx, &namestr,
&id, &alg, NULL);
if (result != ISC_R_SUCCESS)
usage();
key = ISC_LIST_HEAD(keylist);
while (key != NULL) {
dst_key_t *dkey = key->key;
if (dst_key_id(dkey) == id &&
dst_key_alg(dkey) == alg &&
strcasecmp(namestr,
dst_key_name(dkey)) == 0)
{
key->isdefault = ISC_TRUE;
if (!dst_key_isprivate(dkey))
check_result
(DST_R_NOTPRIVATEKEY,
"key specify");
break;
}
key = ISC_LIST_NEXT(key, link);
}
if (key == NULL) {
dst_key_t *dkey = NULL;
result = dst_key_fromfile(namestr, id, alg,
DST_TYPE_PRIVATE,
mctx, &dkey);
check_result (result, "dst_key_fromfile");
key = isc_mem_get(mctx, sizeof(signer_key_t));
if (key == NULL)
check_result(ISC_R_FAILURE,
"isc_mem_get");
key->key = dkey;
key->isdefault = ISC_TRUE;
ISC_LIST_APPEND(keylist, key, link);
}
isc_mem_put(mctx, namestr, strlen(namestr) + 1);
}
}
signzone(db, version);
/*
* Should we update the SOA serial?
*/
dns_db_closeversion(db, &version, ISC_TRUE);
dumpzone(zone, output);
dns_db_detach(&db);
dns_zone_detach(&zone);
key = ISC_LIST_HEAD(keylist);
while (key != NULL) {
signer_key_t *next = ISC_LIST_NEXT(key, link);
dst_key_free(key->key);
isc_mem_put(mctx, key, sizeof(signer_key_t));
key = next;
}
isc_mem_free(mctx, origin);
isc_mem_free(mctx, file);
isc_mem_free(mctx, output);
if (log != NULL)
isc_log_destroy(&log);
/* isc_mem_stats(mctx, stdout);*/
isc_mem_destroy(&mctx);
return (0);
}