dnssec-revoke.c revision 747abb4993e03b8812514e4476bff67f5248c717
/*
* Copyright (C) 2009 Internet Systems Consortium, Inc. ("ISC")
*
* Permission to use, copy, modify, and/or 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 ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC 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.
*/
/* $Id: dnssec-revoke.c,v 1.7 2009/08/28 03:13:08 each Exp $ */
/*! \file */
#include <config.h>
#include <libgen.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>
#include "dnssectool.h"
const char *program = "dnssec-revoke";
int verbose;
static isc_mem_t *mctx = NULL;
static void
usage(void) {
fprintf(stderr, "Usage:\n");
fprintf(stderr, " %s [options] keyfile\n\n", program);
fprintf(stderr, "Version: %s\n", VERSION);
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, "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;
char *filename = NULL, *dir = NULL;
char newname[1024], oldname[1024];
char keystr[KEY_FORMATSIZE];
char *endp;
int ch;
isc_entropy_t *ectx = NULL;
dst_key_t *key = NULL;
isc_uint32_t flags;
isc_buffer_t buf;
isc_boolean_t force = ISC_FALSE;
isc_boolean_t remove = ISC_FALSE;
if (argc == 1)
usage();
result = isc_mem_create(0, 0, &mctx);
if (result != ISC_R_SUCCESS)
fatal("Out of memory");
dns_result_register();
isc_commandline_errprint = ISC_FALSE;
while ((ch = isc_commandline_parse(argc, argv, "fK:rhv:")) != -1) {
switch (ch) {
case 'f':
force = ISC_TRUE;
break;
case 'K':
dir = isc_commandline_argument;
break;
case 'r':
remove = ISC_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);
/* Falls into */
case 'h':
usage();
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 {
isc_file_splitpath(mctx, argv[isc_commandline_index],
&dir, &filename);
}
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_init(mctx, ectx,
ISC_ENTROPY_BLOCKING | ISC_ENTROPY_GOODONLY);
if (result != ISC_R_SUCCESS)
fatal("Could not initialize dst");
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 (verbose > 2) {
char keystr[KEY_FORMATSIZE];
key_format(key, keystr, sizeof(keystr));
fprintf(stderr, "%s: %s\n", program, keystr);
}
flags = dst_key_flags(key);
if ((flags & DNS_KEYFLAG_REVOKE) == 0) {
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) {
key_format(key, keystr, sizeof(keystr));
fatal("Failed to write key %s: %s", keystr,
isc_result_totext(result));
}
printf("%s\n", newname);
isc_buffer_clear(&buf);
dst_key_buildfilename(key, DST_TYPE_PRIVATE, 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 (remove && 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;
if (access(oldname, F_OK) == 0)
unlink(oldname);
isc_buffer_clear(&buf);
dst_key_buildfilename(key, DST_TYPE_PUBLIC, dir, &buf);
if (access(oldname, F_OK) == 0)
unlink(oldname);
}
} else {
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);
isc_mem_free(mctx, dir);
isc_mem_destroy(&mctx);
return (0);
}