diff options
Diffstat (limited to 'bin/dnssec/dnssec-revoke.c')
| -rw-r--r-- | bin/dnssec/dnssec-revoke.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/bin/dnssec/dnssec-revoke.c b/bin/dnssec/dnssec-revoke.c new file mode 100644 index 0000000..93ee20c --- /dev/null +++ b/bin/dnssec/dnssec-revoke.c @@ -0,0 +1,263 @@ +/* + * 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 <inttypes.h> +#include <stdbool.h> +#include <stdlib.h> +#include <unistd.h> + +#include <isc/attributes.h> +#include <isc/buffer.h> +#include <isc/commandline.h> +#include <isc/file.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/keyvalues.h> + +#include <dst/dst.h> + +#include "dnssectool.h" + +const char *program = "dnssec-revoke"; + +static isc_mem_t *mctx = NULL; + +noreturn static void +usage(void); + +static void +usage(void) { + fprintf(stderr, "Usage:\n"); + fprintf(stderr, " %s [options] keyfile\n\n", program); + fprintf(stderr, "Version: %s\n", PACKAGE_VERSION); + fprintf(stderr, " -E engine: specify OpenSSL engine\n"); + fprintf(stderr, " -f: force overwrite\n"); + fprintf(stderr, " -h: help\n"); + fprintf(stderr, " -K directory: use directory for key files\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; + const char *engine = NULL; + char const *filename = NULL; + char *dir = NULL; + char newname[1024], oldname[1024]; + char keystr[DST_KEY_FORMATSIZE]; + char *endp; + int ch; + 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(); + } + + isc_mem_create(&mctx); + + 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); + 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; + } + } + + result = dst_lib_init(mctx, engine); + if (result != ISC_R_SUCCESS) { + fatal("Could not initialize dst: %s", + isc_result_totext(result)); + } + + 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) { + 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(); + if (verbose > 10) { + isc_mem_stats(mctx, stdout); + } + if (dir != NULL) { + isc_mem_free(mctx, dir); + } + isc_mem_destroy(&mctx); + + return (0); +} |