dnssec-makekeyset.c revision a9bc95f22ef2dd4a12e79be99412c9f18b814a5d
/*
* Copyright (C) 1999, 2000 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#include <config.h>
#include <stdlib.h>
#include <isc/commandline.h>
#include <isc/mem.h>
#include <isc/string.h>
#include <isc/util.h>
#include <dns/db.h>
#include <dns/dnssec.h>
#include <dns/fixedname.h>
#include <dns/log.h>
#include <dns/rdata.h>
#include <dns/rdatalist.h>
#include <dns/rdataset.h>
#include <dns/result.h>
#include <dns/secalg.h>
#include <dns/time.h>
#define PROGRAM "dnssec-makekeyset"
#define BUFSIZE 2048
typedef struct keynode keynode_t;
struct keynode {
dst_key_t *key;
ISC_LINK(keynode_t) link;
};
typedef ISC_LIST(keynode_t) keylist_t;
static isc_stdtime_t starttime = 0, endtime = 0, now;
static int ttl = -1;
static int verbose;
static isc_mem_t *mctx = NULL;
static keylist_t keylist;
static void
fatal(char *format, ...) {
va_list args;
fprintf(stderr, "%s: ", PROGRAM);
va_start(args, format);
vfprintf(stderr, format, args);
va_end(args);
fprintf(stderr, "\n");
exit(1);
}
static inline void
check_result(isc_result_t result, char *message) {
if (result != ISC_R_SUCCESS) {
fatal("%s: %s\n", message, isc_result_totext(result));
exit(1);
}
}
/* Not thread-safe! */
static char *
nametostr(dns_name_t *name) {
isc_buffer_t b;
isc_region_t r;
isc_result_t result;
static char data[1025];
isc_buffer_init(&b, data, sizeof(data));
result = dns_name_totext(name, ISC_FALSE, &b);
check_result(result, "dns_name_totext()");
isc_buffer_usedregion(&b, &r);
r.base[r.length] = 0;
return (char *) r.base;
}
/* Not thread-safe! */
static char *
algtostr(const dns_secalg_t alg) {
isc_buffer_t b;
isc_region_t r;
isc_result_t result;
static char data[10];
isc_buffer_init(&b, data, sizeof(data));
result = dns_secalg_totext(alg, &b);
check_result(result, "dns_secalg_totext()");
isc_buffer_usedregion(&b, &r);
r.base[r.length] = 0;
return (char *) r.base;
}
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);
if (result != ISC_R_SUCCESS)
fatal("time %s must be numeric", str);
}
if (*endp != '\0')
fatal("time value %s is invalid", str);
return ((isc_stdtime_t) val);
}
static void
usage(void) {
fprintf(stderr, "Usage:\n");
fprintf(stderr, "\t%s [options] keys\n", PROGRAM);
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-t ttl\n");
fprintf(stderr, "\t-v level:\n");
fprintf(stderr, "\t\tverbose level (0)\n");
fprintf(stderr, "\n");
fprintf(stderr, "keys:\n");
fprintf(stderr, "\tkeyfile (Kname+alg+id)\n");
exit(0);
}
int
main(int argc, char *argv[]) {
int i, ch;
char *startstr = NULL, *endstr = NULL;
dns_fixedname_t fdomain;
dns_name_t *domain = NULL;
char *output = NULL;
char *endp;
unsigned char *data;
dns_db_t *db;
dns_dbnode_t *node;
dns_dbversion_t *version;
dst_key_t *key = NULL;
dns_rdata_t *rdata;
dns_rdatalist_t rdatalist, sigrdatalist;
dns_rdataset_t rdataset, sigrdataset;
isc_result_t result;
isc_buffer_t b;
isc_region_t r;
isc_log_t *log = NULL;
isc_logconfig_t *logconfig;
keynode_t *keynode;
dns_fixedname_t fsavedname;
dns_name_t *savedname = NULL;
dns_result_register();
result = isc_mem_create(0, 0, &mctx);
if (result != ISC_R_SUCCESS)
fatal("failed to create memory context: %s",
isc_result_totext(result));
while ((ch = isc_commandline_parse(argc, argv, "s:e:t:v:")) != -1)
{
switch (ch) {
case 's':
startstr = isc_mem_strdup(mctx,
isc_commandline_argument);
if (startstr == NULL)
fatal("out of memory");
break;
case 'e':
endstr = isc_mem_strdup(mctx,
isc_commandline_argument);
if (endstr == NULL)
fatal("out of memory");
break;
case 't':
endp = NULL;
ttl = strtol(isc_commandline_argument, &endp, 0);
if (*endp != '\0')
fatal("TTL must be numeric");
break;
case 'v':
endp = NULL;
verbose = strtol(isc_commandline_argument, &endp, 0);
if (*endp != '\0')
fatal("verbose level must be numeric");
break;
default:
usage();
}
}
argc -= isc_commandline_index;
argv += isc_commandline_index;
if (argc < 1)
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 (ttl == -1) {
ttl = 3600;
fprintf(stderr, "%s: TTL not specified, assuming 3600\n",
PROGRAM);
}
if (verbose > 0) {
RUNTIME_CHECK(isc_log_create(mctx, &log, &logconfig)
== ISC_R_SUCCESS);
isc_log_setcontext(log);
dns_log_init(log);
dns_log_setcontext(log);
RUNTIME_CHECK(isc_log_usechannel(logconfig, "default_stderr",
NULL, NULL) == ISC_R_SUCCESS);
}
dns_rdatalist_init(&rdatalist);
rdatalist.rdclass = dns_rdataclass_in;
rdatalist.type = dns_rdatatype_key;
rdatalist.covers = 0;
rdatalist.ttl = ttl;
ISC_LIST_INIT(keylist);
for (i = 0; i < argc; i++) {
isc_uint16_t id;
int alg;
dns_fixedname_t fname;
dns_name_t *name;
char namestr[1025];
isc_buffer_init(&b, argv[i], strlen(argv[i]));
isc_buffer_add(&b, strlen(argv[i]));
dns_fixedname_init(&fname);
name = dns_fixedname_name(&fname);
result = dst_key_parsefilename(&b, mctx, name, &id, &alg, NULL);
if (result != ISC_R_SUCCESS)
fatal("%s is not a valid key filename", argv[i]);
strncpy(namestr, nametostr(name), sizeof(namestr) - 1);
namestr[sizeof(namestr) - 1] = 0;
if (savedname == NULL) {
fsavedname = fname;
savedname = dns_fixedname_name(&fsavedname);
}
else {
if (!dns_name_equal(savedname, name) != 0)
fatal("all keys must have the same owner - %s "
"and %s do not match",
nametostr(savedname), namestr);
}
if (output == NULL) {
output = isc_mem_allocate(mctx,
strlen(namestr) +
strlen("keyset") + 1);
if (output == NULL)
fatal("out of memory");
strcpy(output, namestr);
strcat(output, "keyset");
}
if (domain == NULL) {
dns_fixedname_init(&fdomain);
domain = dns_fixedname_name(&fdomain);
isc_buffer_init(&b, namestr, strlen(namestr));
isc_buffer_add(&b, strlen(namestr));
result = dns_name_fromtext(domain, &b, dns_rootname,
ISC_FALSE, NULL);
if (result != ISC_R_SUCCESS)
fatal("%s is not a valid name: %s",
namestr, isc_result_totext(result));
}
key = NULL;
result = dst_key_fromfile(name, id, alg, DST_TYPE_PUBLIC,
mctx, &key);
check_result(result, "dst_key_fromfile");
if (dst_key_iszonekey(key)) {
dst_key_t *zonekey = NULL;
result = dst_key_fromfile(name, id, alg,
DST_TYPE_PRIVATE, mctx,
&zonekey);
if (result != ISC_R_SUCCESS)
fatal("failed to read key %s/%s/%d: %s",
namestr, id, algtostr(alg),
isc_result_totext(result));
keynode = isc_mem_get(mctx, sizeof (keynode_t));
if (keynode == NULL)
fatal("out of memory");
keynode->key = zonekey;
ISC_LINK_INIT(keynode, link);
ISC_LIST_APPEND(keylist, keynode, link);
}
rdata = isc_mem_get(mctx, sizeof(dns_rdata_t));
if (rdata == NULL)
fatal("out of memory");
data = isc_mem_get(mctx, BUFSIZE);
if (data == NULL)
fatal("out of memory");
isc_buffer_init(&b, data, BUFSIZE);
result = dst_key_todns(key, &b);
if (result != ISC_R_SUCCESS)
fatal("failed to convert key %s/%s/%d "
"to a DNS KEY: %s",
namestr, id, algtostr(alg),
isc_result_totext(result));
isc_buffer_usedregion(&b, &r);
dns_rdata_fromregion(rdata, dns_rdataclass_in,
dns_rdatatype_key, &r);
ISC_LIST_APPEND(rdatalist.rdata, rdata, link);
dst_key_free(&key);
}
dns_rdataset_init(&rdataset);
result = dns_rdatalist_tordataset(&rdatalist, &rdataset);
check_result(result, "dns_rdatalist_tordataset()");
dns_rdatalist_init(&sigrdatalist);
sigrdatalist.rdclass = dns_rdataclass_in;
sigrdatalist.type = dns_rdatatype_sig;
sigrdatalist.covers = dns_rdatatype_key;
sigrdatalist.ttl = ttl;
if (ISC_LIST_EMPTY(keylist))
fprintf(stderr,
"%s: no private zone key found; not self-signing\n",
PROGRAM);
for (keynode = ISC_LIST_HEAD(keylist);
keynode != NULL;
keynode = ISC_LIST_NEXT(keynode, link))
{
rdata = isc_mem_get(mctx, sizeof(dns_rdata_t));
if (rdata == NULL)
fatal("out of memory");
data = isc_mem_get(mctx, BUFSIZE);
if (data == NULL)
fatal("out of memory");
isc_buffer_init(&b, data, BUFSIZE);
result = dns_dnssec_sign(domain, &rdataset, keynode->key,
&starttime, &endtime, mctx, &b,
rdata);
if (result != ISC_R_SUCCESS)
fatal("failed to sign keyset with key %s/%s/%d: %s",
nametostr(dst_key_name(keynode->key)),
algtostr(dst_key_alg(keynode->key)),
dst_key_id(keynode->key),
isc_result_totext(result));
ISC_LIST_APPEND(sigrdatalist.rdata, rdata, link);
dns_rdataset_init(&sigrdataset);
result = dns_rdatalist_tordataset(&sigrdatalist, &sigrdataset);
check_result(result, "dns_rdatalist_tordataset()");
}
db = NULL;
result = dns_db_create(mctx, "rbt", domain, ISC_FALSE,
dns_rdataclass_in, 0, NULL, &db);
if (result != ISC_R_SUCCESS)
fatal("failed to create a database for %s", nametostr(domain));
version = NULL;
dns_db_newversion(db, &version);
node = NULL;
result = dns_db_findnode(db, domain, ISC_TRUE, &node);
check_result(result, "dns_db_findnode()");
dns_db_addrdataset(db, node, version, 0, &rdataset, 0, NULL);
if (!ISC_LIST_EMPTY(keylist))
dns_db_addrdataset(db, node, version, 0, &sigrdataset, 0,
NULL);
dns_db_detachnode(db, &node);
dns_db_closeversion(db, &version, ISC_TRUE);
result = dns_db_dump(db, version, output);
if (result != ISC_R_SUCCESS)
fatal("failed to write database for %s to %s",
nametostr(domain), output);
dns_db_detach(&db);
dns_rdataset_disassociate(&rdataset);
while (!ISC_LIST_EMPTY(rdatalist.rdata)) {
rdata = ISC_LIST_HEAD(rdatalist.rdata);
ISC_LIST_UNLINK(rdatalist.rdata, rdata, link);
isc_mem_put(mctx, rdata->data, BUFSIZE);
isc_mem_put(mctx, rdata, sizeof *rdata);
}
while (!ISC_LIST_EMPTY(sigrdatalist.rdata)) {
rdata = ISC_LIST_HEAD(sigrdatalist.rdata);
ISC_LIST_UNLINK(sigrdatalist.rdata, rdata, link);
isc_mem_put(mctx, rdata->data, BUFSIZE);
isc_mem_put(mctx, rdata, sizeof *rdata);
}
while (!ISC_LIST_EMPTY(keylist)) {
keynode = ISC_LIST_HEAD(keylist);
ISC_LIST_UNLINK(keylist, keynode, link);
dst_key_free(&keynode->key);
isc_mem_put(mctx, keynode, sizeof(keynode_t));
}
if (log != NULL)
isc_log_destroy(&log);
isc_mem_free(mctx, output);
isc_mem_destroy(&mctx);
return (0);
}