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/*
* 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 <inttypes.h>
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
#include <isc/buffer.h>
#include <isc/commandline.h>
#include <isc/entropy.h>
#include <isc/file.h>
#include <isc/hash.h>
#include <isc/mem.h>
#include <isc/print.h>
#include <isc/string.h>
#include <isc/util.h>
#include <dns/keyvalues.h>
#include <dns/result.h>
#include <dst/dst.h>
#ifdef PKCS11CRYPTO
#include <pk11/result.h>
#endif
#include "dnssectool.h"
const char *program = "dnssec-revoke";
int verbose;
static isc_mem_t *mctx = NULL;
ISC_PLATFORM_NORETURN_PRE static void
usage(void) ISC_PLATFORM_NORETURN_POST;
static void
usage(void) {
fprintf(stderr, "Usage:\n");
fprintf(stderr, " %s [options] keyfile\n\n", program);
fprintf(stderr, "Version: %s\n", VERSION);
#if defined(PKCS11CRYPTO)
fprintf(stderr, " -E engine: specify PKCS#11 provider "
"(default: %s)\n", PK11_LIB_LOCATION);
#elif defined(USE_PKCS11)
fprintf(stderr, " -E engine: specify OpenSSL engine "
"(default \"pkcs11\")\n");
#else
fprintf(stderr, " -E engine: specify OpenSSL engine\n");
#endif
fprintf(stderr, " -f: force overwrite\n");
fprintf(stderr, " -K directory: use directory for key files\n");
fprintf(stderr, " -h: help\n");
fprintf(stderr, " -r: remove old keyfiles after "
"creating revoked version\n");
fprintf(stderr, " -v level: set level of verbosity\n");
fprintf(stderr, " -V: print version information\n");
fprintf(stderr, "Output:\n");
fprintf(stderr, " K<name>+<alg>+<new id>.key, "
"K<name>+<alg>+<new id>.private\n");
exit (-1);
}
int
main(int argc, char **argv) {
isc_result_t result;
#ifdef USE_PKCS11
const char *engine = PKCS11_ENGINE;
#else
const char *engine = NULL;
#endif
char const *filename = NULL;
char *dir = NULL;
char newname[1024], oldname[1024];
char keystr[DST_KEY_FORMATSIZE];
char *endp;
int ch;
isc_entropy_t *ectx = NULL;
dst_key_t *key = NULL;
uint32_t flags;
isc_buffer_t buf;
bool force = false;
bool removefile = false;
bool id = false;
if (argc == 1)
usage();
result = isc_mem_create(0, 0, &mctx);
if (result != ISC_R_SUCCESS)
fatal("Out of memory");
#ifdef PKCS11CRYPTO
pk11_result_register();
#endif
dns_result_register();
isc_commandline_errprint = false;
while ((ch = isc_commandline_parse(argc, argv, "E:fK:rRhv:V")) != -1) {
switch (ch) {
case 'E':
engine = isc_commandline_argument;
break;
case 'f':
force = true;
break;
case 'K':
/*
* We don't have to copy it here, but do it to
* simplify cleanup later
*/
dir = isc_mem_strdup(mctx, isc_commandline_argument);
if (dir == NULL) {
fatal("Failed to allocate memory for "
"directory");
}
break;
case 'r':
removefile = true;
break;
case 'R':
id = true;
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);
}
}
if (argc < isc_commandline_index + 1 ||
argv[isc_commandline_index] == NULL)
fatal("The key file name was not specified");
if (argc > isc_commandline_index + 1)
fatal("Extraneous arguments");
if (dir != NULL) {
filename = argv[isc_commandline_index];
} else {
result = isc_file_splitpath(mctx, argv[isc_commandline_index],
&dir, &filename);
if (result != ISC_R_SUCCESS)
fatal("cannot process filename %s: %s",
argv[isc_commandline_index],
isc_result_totext(result));
if (strcmp(dir, ".") == 0) {
isc_mem_free(mctx, dir);
dir = NULL;
}
}
if (ectx == NULL)
setup_entropy(mctx, NULL, &ectx);
result = isc_hash_create(mctx, ectx, DNS_NAME_MAXWIRE);
if (result != ISC_R_SUCCESS)
fatal("Could not initialize hash");
result = dst_lib_init2(mctx, ectx, engine,
ISC_ENTROPY_BLOCKING | ISC_ENTROPY_GOODONLY);
if (result != ISC_R_SUCCESS)
fatal("Could not initialize dst: %s",
isc_result_totext(result));
isc_entropy_stopcallbacksources(ectx);
result = dst_key_fromnamedfile(filename, dir,
DST_TYPE_PUBLIC|DST_TYPE_PRIVATE,
mctx, &key);
if (result != ISC_R_SUCCESS)
fatal("Invalid keyfile name %s: %s",
filename, isc_result_totext(result));
if (id) {
fprintf(stdout, "%u\n", dst_key_rid(key));
goto cleanup;
}
dst_key_format(key, keystr, sizeof(keystr));
if (verbose > 2)
fprintf(stderr, "%s: %s\n", program, keystr);
if (force)
set_keyversion(key);
else
check_keyversion(key, keystr);
flags = dst_key_flags(key);
if ((flags & DNS_KEYFLAG_REVOKE) == 0) {
isc_stdtime_t now;
if ((flags & DNS_KEYFLAG_KSK) == 0)
fprintf(stderr, "%s: warning: Key is not flagged "
"as a KSK. Revoking a ZSK is "
"legal, but undefined.\n",
program);
isc_stdtime_get(&now);
dst_key_settime(key, DST_TIME_REVOKE, now);
dst_key_setflags(key, flags | DNS_KEYFLAG_REVOKE);
isc_buffer_init(&buf, newname, sizeof(newname));
dst_key_buildfilename(key, DST_TYPE_PUBLIC, dir, &buf);
if (access(newname, F_OK) == 0 && !force) {
fatal("Key file %s already exists; "
"use -f to force overwrite", newname);
}
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));
}
isc_buffer_clear(&buf);
dst_key_buildfilename(key, 0, dir, &buf);
printf("%s\n", newname);
/*
* Remove old key file, if told to (and if
* it isn't the same as the new file)
*/
if (removefile && dst_key_alg(key) != DST_ALG_RSAMD5) {
isc_buffer_init(&buf, oldname, sizeof(oldname));
dst_key_setflags(key, flags & ~DNS_KEYFLAG_REVOKE);
dst_key_buildfilename(key, DST_TYPE_PRIVATE, dir, &buf);
if (strcmp(oldname, newname) == 0)
goto cleanup;
(void)unlink(oldname);
isc_buffer_clear(&buf);
dst_key_buildfilename(key, DST_TYPE_PUBLIC, dir, &buf);
(void)unlink(oldname);
}
} else {
dst_key_format(key, keystr, sizeof(keystr));
fatal("Key %s is already revoked", keystr);
}
cleanup:
dst_key_free(&key);
dst_lib_destroy();
isc_hash_destroy();
cleanup_entropy(&ectx);
if (verbose > 10)
isc_mem_stats(mctx, stdout);
if (dir != NULL)
isc_mem_free(mctx, dir);
isc_mem_destroy(&mctx);
return (0);
}
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