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djm@openbsd.orga4fc2532018-10-19 03:12:42 +00001/* $OpenBSD: ssh-keygen.c,v 1.323 2018/10/19 03:12:42 djm Exp $ */
Damien Millerd4a8b7e1999-10-27 13:42:43 +10002/*
Damien Miller95def091999-11-25 00:26:21 +11003 * Author: Tatu Ylonen <ylo@cs.hut.fi>
4 * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5 * All rights reserved
Damien Miller95def091999-11-25 00:26:21 +11006 * Identity and host key generation and maintenance.
Damien Millere4340be2000-09-16 13:29:08 +11007 *
8 * As far as I am concerned, the code I have written for this software
9 * can be used freely for any purpose. Any derived versions of this
10 * software must be clearly marked as such, and if the derived work is
11 * incompatible with the protocol description in the RFC file, it must be
12 * called by a name other than "ssh" or "Secure Shell".
Damien Miller95def091999-11-25 00:26:21 +110013 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100014
15#include "includes.h"
Damien Millerf17883e2006-03-15 11:45:54 +110016
17#include <sys/types.h>
Damien Millere3b60b52006-07-10 21:08:03 +100018#include <sys/socket.h>
Damien Millerf17883e2006-03-15 11:45:54 +110019#include <sys/stat.h>
Damien Millerd4a8b7e1999-10-27 13:42:43 +100020
Damien Miller72ef7c12015-01-15 02:21:31 +110021#ifdef WITH_OPENSSL
Damien Millereba71ba2000-04-29 23:57:08 +100022#include <openssl/evp.h>
23#include <openssl/pem.h>
Darren Tuckerbfaaf962008-02-28 19:13:52 +110024#include "openbsd-compat/openssl-compat.h"
Damien Miller72ef7c12015-01-15 02:21:31 +110025#endif
Damien Millereba71ba2000-04-29 23:57:08 +100026
Darren Tucker39972492006-07-12 22:22:46 +100027#include <errno.h>
Damien Miller57cf6382006-07-10 21:13:46 +100028#include <fcntl.h>
Damien Millerb8fe89c2006-07-24 14:51:00 +100029#include <netdb.h>
Darren Tucker2ee50c52006-07-11 18:55:05 +100030#ifdef HAVE_PATHS_H
31# include <paths.h>
32#endif
Damien Miller9f2abc42006-07-10 20:53:08 +100033#include <pwd.h>
Damien Millerded319c2006-09-01 15:38:36 +100034#include <stdarg.h>
Damien Millera7a73ee2006-08-05 11:37:59 +100035#include <stdio.h>
Damien Millere7a1e5c2006-08-05 11:34:19 +100036#include <stdlib.h>
Damien Millere3476ed2006-07-24 14:13:33 +100037#include <string.h>
Damien Millere6b3b612006-07-24 14:01:23 +100038#include <unistd.h>
deraadt@openbsd.org2ae4f332015-01-16 06:40:12 +000039#include <limits.h>
djm@openbsd.orga287c5a2017-02-10 03:36:40 +000040#include <locale.h>
Damien Miller4d3b2f32018-07-12 14:49:14 +100041#include <time.h>
Damien Miller9f2abc42006-07-10 20:53:08 +100042
Damien Millerd4a8b7e1999-10-27 13:42:43 +100043#include "xmalloc.h"
djm@openbsd.org1129dcf2015-01-15 09:40:00 +000044#include "sshkey.h"
Damien Millereba71ba2000-04-29 23:57:08 +100045#include "authfile.h"
46#include "uuencode.h"
djm@openbsd.org1129dcf2015-01-15 09:40:00 +000047#include "sshbuf.h"
Ben Lindstrom226cfa02001-01-22 05:34:40 +000048#include "pathnames.h"
49#include "log.h"
Darren Tuckere608ca22004-05-13 16:15:47 +100050#include "misc.h"
Damien Miller4b42d7f2005-03-01 21:48:35 +110051#include "match.h"
52#include "hostfile.h"
Damien Miller69996102006-07-10 20:53:31 +100053#include "dns.h"
Damien Millerf3747bf2013-01-18 11:44:04 +110054#include "ssh.h"
Damien Miller0a80ca12010-02-27 07:55:05 +110055#include "ssh2.h"
djm@openbsd.org1129dcf2015-01-15 09:40:00 +000056#include "ssherr.h"
Damien Miller7ea845e2010-02-12 09:21:02 +110057#include "ssh-pkcs11.h"
Damien Millerf3747bf2013-01-18 11:44:04 +110058#include "atomicio.h"
59#include "krl.h"
djm@openbsd.org56d1c832014-12-21 22:27:55 +000060#include "digest.h"
djm@openbsd.orga287c5a2017-02-10 03:36:40 +000061#include "utf8.h"
djm@openbsd.orga98339e2017-06-28 01:09:22 +000062#include "authfd.h"
Ben Lindstromcd392282001-07-04 03:44:03 +000063
djm@openbsd.orgd1958792015-05-28 04:40:13 +000064#ifdef WITH_OPENSSL
65# define DEFAULT_KEY_TYPE_NAME "rsa"
66#else
67# define DEFAULT_KEY_TYPE_NAME "ed25519"
68#endif
69
Damien Miller3f54a9f2005-11-05 14:52:18 +110070/* Number of bits in the RSA/DSA key. This value can be set on the command line. */
71#define DEFAULT_BITS 2048
72#define DEFAULT_BITS_DSA 1024
Damien Miller6e9f6802010-09-10 11:17:38 +100073#define DEFAULT_BITS_ECDSA 256
Damien Miller3f54a9f2005-11-05 14:52:18 +110074u_int32_t bits = 0;
Damien Millerd4a8b7e1999-10-27 13:42:43 +100075
Damien Miller5428f641999-11-25 11:54:57 +110076/*
77 * Flag indicating that we just want to change the passphrase. This can be
78 * set on the command line.
79 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100080int change_passphrase = 0;
81
Damien Miller5428f641999-11-25 11:54:57 +110082/*
83 * Flag indicating that we just want to change the comment. This can be set
84 * on the command line.
85 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100086int change_comment = 0;
87
88int quiet = 0;
89
Darren Tucker35c45532008-06-13 04:43:15 +100090int log_level = SYSLOG_LEVEL_INFO;
91
Damien Miller4b42d7f2005-03-01 21:48:35 +110092/* Flag indicating that we want to hash a known_hosts file */
93int hash_hosts = 0;
94/* Flag indicating that we want lookup a host in known_hosts file */
95int find_host = 0;
96/* Flag indicating that we want to delete a host from a known_hosts file */
97int delete_host = 0;
98
Damien Millerf2b70ca2010-03-05 07:39:35 +110099/* Flag indicating that we want to show the contents of a certificate */
100int show_cert = 0;
101
Damien Miller10f6f6b1999-11-17 17:29:08 +1100102/* Flag indicating that we just want to see the key fingerprint */
103int print_fingerprint = 0;
Ben Lindstrom8fd372b2001-03-12 03:02:17 +0000104int print_bubblebabble = 0;
Damien Miller10f6f6b1999-11-17 17:29:08 +1100105
djm@openbsd.org56d1c832014-12-21 22:27:55 +0000106/* Hash algorithm to use for fingerprints. */
107int fingerprint_hash = SSH_FP_HASH_DEFAULT;
108
Damien Miller431f66b1999-11-21 18:31:57 +1100109/* The identity file name, given on the command line or entered by the user. */
110char identity_file[1024];
111int have_identity = 0;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000112
113/* This is set to the passphrase if given on the command line. */
114char *identity_passphrase = NULL;
115
116/* This is set to the new passphrase if given on the command line. */
117char *identity_new_passphrase = NULL;
118
119/* This is set to the new comment if given on the command line. */
120char *identity_comment = NULL;
121
Damien Miller0a80ca12010-02-27 07:55:05 +1100122/* Path to CA key when certifying keys. */
123char *ca_key_path = NULL;
124
djm@openbsd.orga98339e2017-06-28 01:09:22 +0000125/* Prefer to use agent keys for CA signing */
126int prefer_agent = 0;
127
Damien Miller4e270b02010-04-16 15:56:21 +1000128/* Certificate serial number */
Damien Miller55aca022012-12-03 11:25:30 +1100129unsigned long long cert_serial = 0;
Damien Miller4e270b02010-04-16 15:56:21 +1000130
Damien Miller0a80ca12010-02-27 07:55:05 +1100131/* Key type when certifying */
132u_int cert_key_type = SSH2_CERT_TYPE_USER;
133
134/* "key ID" of signed key */
135char *cert_key_id = NULL;
136
137/* Comma-separated list of principal names for certifying keys */
138char *cert_principals = NULL;
139
140/* Validity period for certificates */
141u_int64_t cert_valid_from = 0;
142u_int64_t cert_valid_to = ~0ULL;
143
Damien Miller4e270b02010-04-16 15:56:21 +1000144/* Certificate options */
Damien Millerd0e4a8e2010-05-21 14:58:32 +1000145#define CERTOPT_X_FWD (1)
146#define CERTOPT_AGENT_FWD (1<<1)
147#define CERTOPT_PORT_FWD (1<<2)
148#define CERTOPT_PTY (1<<3)
149#define CERTOPT_USER_RC (1<<4)
150#define CERTOPT_DEFAULT (CERTOPT_X_FWD|CERTOPT_AGENT_FWD| \
151 CERTOPT_PORT_FWD|CERTOPT_PTY|CERTOPT_USER_RC)
152u_int32_t certflags_flags = CERTOPT_DEFAULT;
153char *certflags_command = NULL;
154char *certflags_src_addr = NULL;
Damien Miller0a80ca12010-02-27 07:55:05 +1100155
djm@openbsd.org249516e2017-04-29 04:12:25 +0000156/* Arbitrary extensions specified by user */
157struct cert_userext {
158 char *key;
159 char *val;
160 int crit;
161};
162struct cert_userext *cert_userext;
163size_t ncert_userext;
164
Damien Miller44b25042010-07-02 13:35:01 +1000165/* Conversion to/from various formats */
166int convert_to = 0;
167int convert_from = 0;
168enum {
169 FMT_RFC4716,
170 FMT_PKCS8,
171 FMT_PEM
172} convert_format = FMT_RFC4716;
Damien Millereba71ba2000-04-29 23:57:08 +1000173int print_public = 0;
Damien Miller37876e92003-05-15 10:19:46 +1000174int print_generic = 0;
Damien Miller0bc1bd82000-11-13 22:57:25 +1100175
Damien Millera41c8b12002-01-22 23:05:08 +1100176char *key_type_name = NULL;
Damien Millereba71ba2000-04-29 23:57:08 +1000177
Damien Miller757f34e2010-08-05 13:05:31 +1000178/* Load key from this PKCS#11 provider */
179char *pkcs11provider = NULL;
Damien Miller44b25042010-07-02 13:35:01 +1000180
Damien Millerbcd00ab2013-12-07 10:41:55 +1100181/* Use new OpenSSH private key format when writing SSH2 keys instead of PEM */
djm@openbsd.orged7bd5d2018-08-08 01:16:01 +0000182int use_new_format = 1;
Damien Millerbcd00ab2013-12-07 10:41:55 +1100183
184/* Cipher for new-format private keys */
185char *new_format_cipher = NULL;
186
187/*
188 * Number of KDF rounds to derive new format keys /
189 * number of primality trials when screening moduli.
190 */
191int rounds = 0;
192
Damien Miller431f66b1999-11-21 18:31:57 +1100193/* argv0 */
194extern char *__progname;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000195
Damien Millere5c0d522014-07-03 21:24:19 +1000196char hostname[NI_MAXHOST];
Damien Millereba71ba2000-04-29 23:57:08 +1000197
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +0000198#ifdef WITH_OPENSSL
Darren Tucker770fc012004-05-13 16:24:32 +1000199/* moduli.c */
Damien Millerb089fb52005-05-26 12:16:18 +1000200int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *);
Damien Millerdfceafe2012-07-06 13:44:19 +1000201int prime_test(FILE *, FILE *, u_int32_t, u_int32_t, char *, unsigned long,
202 unsigned long);
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +0000203#endif
Darren Tucker770fc012004-05-13 16:24:32 +1000204
Ben Lindstrombba81212001-06-25 05:01:22 +0000205static void
djm@openbsd.org7efb4552015-01-18 13:22:28 +0000206type_bits_valid(int type, const char *name, u_int32_t *bitsp)
Damien Miller58f1baf2011-05-05 14:06:15 +1000207{
Damien Miller72ef7c12015-01-15 02:21:31 +1100208#ifdef WITH_OPENSSL
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +0000209 u_int maxbits, nid;
Damien Miller72ef7c12015-01-15 02:21:31 +1100210#endif
Damien Miller58f1baf2011-05-05 14:06:15 +1000211
djm@openbsd.org3038a192015-04-17 13:19:22 +0000212 if (type == KEY_UNSPEC)
213 fatal("unknown key type %s", key_type_name);
Damien Miller884b63a2011-05-05 14:14:52 +1000214 if (*bitsp == 0) {
Damien Miller773dda22015-01-30 23:10:17 +1100215#ifdef WITH_OPENSSL
Damien Miller58f1baf2011-05-05 14:06:15 +1000216 if (type == KEY_DSA)
Damien Miller884b63a2011-05-05 14:14:52 +1000217 *bitsp = DEFAULT_BITS_DSA;
djm@openbsd.org7efb4552015-01-18 13:22:28 +0000218 else if (type == KEY_ECDSA) {
219 if (name != NULL &&
220 (nid = sshkey_ecdsa_nid_from_name(name)) > 0)
221 *bitsp = sshkey_curve_nid_to_bits(nid);
222 if (*bitsp == 0)
223 *bitsp = DEFAULT_BITS_ECDSA;
Damien Miller773dda22015-01-30 23:10:17 +1100224 } else
225#endif
Damien Miller884b63a2011-05-05 14:14:52 +1000226 *bitsp = DEFAULT_BITS;
Damien Miller58f1baf2011-05-05 14:06:15 +1000227 }
Damien Miller72ef7c12015-01-15 02:21:31 +1100228#ifdef WITH_OPENSSL
Damien Miller58f1baf2011-05-05 14:06:15 +1000229 maxbits = (type == KEY_DSA) ?
230 OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS;
djm@openbsd.org3038a192015-04-17 13:19:22 +0000231 if (*bitsp > maxbits)
232 fatal("key bits exceeds maximum %d", maxbits);
djm@openbsd.orgbd636f42017-05-07 23:15:59 +0000233 switch (type) {
234 case KEY_DSA:
235 if (*bitsp != 1024)
236 fatal("Invalid DSA key length: must be 1024 bits");
237 break;
238 case KEY_RSA:
239 if (*bitsp < SSH_RSA_MINIMUM_MODULUS_SIZE)
240 fatal("Invalid RSA key length: minimum is %d bits",
241 SSH_RSA_MINIMUM_MODULUS_SIZE);
242 break;
243 case KEY_ECDSA:
244 if (sshkey_ecdsa_bits_to_nid(*bitsp) == -1)
245 fatal("Invalid ECDSA key length: valid lengths are "
246 "256, 384 or 521 bits");
247 }
Damien Miller1f0311c2014-05-15 14:24:09 +1000248#endif
Damien Miller58f1baf2011-05-05 14:06:15 +1000249}
250
251static void
Damien Miller431f66b1999-11-21 18:31:57 +1100252ask_filename(struct passwd *pw, const char *prompt)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000253{
Damien Miller95def091999-11-25 00:26:21 +1100254 char buf[1024];
Damien Millere39cacc2000-11-29 12:18:44 +1100255 char *name = NULL;
256
Damien Miller993dd552002-02-19 15:22:47 +1100257 if (key_type_name == NULL)
Ben Lindstrom226cfa02001-01-22 05:34:40 +0000258 name = _PATH_SSH_CLIENT_ID_RSA;
Damien Miller90967402006-03-26 14:07:26 +1100259 else {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000260 switch (sshkey_type_from_name(key_type_name)) {
Damien Miller4e270b02010-04-16 15:56:21 +1000261 case KEY_DSA_CERT:
Damien Miller993dd552002-02-19 15:22:47 +1100262 case KEY_DSA:
263 name = _PATH_SSH_CLIENT_ID_DSA;
264 break;
Damien Millerdd190dd2010-11-11 14:17:02 +1100265#ifdef OPENSSL_HAS_ECC
Damien Millereb8b60e2010-08-31 22:41:14 +1000266 case KEY_ECDSA_CERT:
267 case KEY_ECDSA:
268 name = _PATH_SSH_CLIENT_ID_ECDSA;
269 break;
Damien Millerdd190dd2010-11-11 14:17:02 +1100270#endif
Damien Miller4e270b02010-04-16 15:56:21 +1000271 case KEY_RSA_CERT:
Damien Miller993dd552002-02-19 15:22:47 +1100272 case KEY_RSA:
273 name = _PATH_SSH_CLIENT_ID_RSA;
274 break;
Damien Miller5be9d9e2013-12-07 11:24:01 +1100275 case KEY_ED25519:
276 case KEY_ED25519_CERT:
277 name = _PATH_SSH_CLIENT_ID_ED25519;
278 break;
markus@openbsd.org1b11ea72018-02-23 15:58:37 +0000279 case KEY_XMSS:
280 case KEY_XMSS_CERT:
281 name = _PATH_SSH_CLIENT_ID_XMSS;
282 break;
Damien Miller993dd552002-02-19 15:22:47 +1100283 default:
djm@openbsd.org3038a192015-04-17 13:19:22 +0000284 fatal("bad key type");
Damien Miller993dd552002-02-19 15:22:47 +1100285 }
Damien Miller90967402006-03-26 14:07:26 +1100286 }
djm@openbsd.org3038a192015-04-17 13:19:22 +0000287 snprintf(identity_file, sizeof(identity_file),
288 "%s/%s", pw->pw_dir, name);
289 printf("%s (%s): ", prompt, identity_file);
290 fflush(stdout);
Damien Miller95def091999-11-25 00:26:21 +1100291 if (fgets(buf, sizeof(buf), stdin) == NULL)
292 exit(1);
Damien Miller14b017d2007-09-17 16:09:15 +1000293 buf[strcspn(buf, "\n")] = '\0';
Damien Miller95def091999-11-25 00:26:21 +1100294 if (strcmp(buf, "") != 0)
295 strlcpy(identity_file, buf, sizeof(identity_file));
296 have_identity = 1;
Damien Miller10f6f6b1999-11-17 17:29:08 +1100297}
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000298
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000299static struct sshkey *
Ben Lindstromd78ae762001-06-05 20:35:09 +0000300load_identity(char *filename)
Damien Millereba71ba2000-04-29 23:57:08 +1000301{
Ben Lindstromd0fca422001-03-26 13:44:06 +0000302 char *pass;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000303 struct sshkey *prv;
304 int r;
Ben Lindstromd0fca422001-03-26 13:44:06 +0000305
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000306 if ((r = sshkey_load_private(filename, "", &prv, NULL)) == 0)
307 return prv;
308 if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
309 fatal("Load key \"%s\": %s", filename, ssh_err(r));
310 if (identity_passphrase)
311 pass = xstrdup(identity_passphrase);
312 else
313 pass = read_passphrase("Enter passphrase: ", RP_ALLOW_STDIN);
314 r = sshkey_load_private(filename, pass, &prv, NULL);
315 explicit_bzero(pass, strlen(pass));
316 free(pass);
317 if (r != 0)
318 fatal("Load key \"%s\": %s", filename, ssh_err(r));
Ben Lindstromd0fca422001-03-26 13:44:06 +0000319 return prv;
Damien Millereba71ba2000-04-29 23:57:08 +1000320}
321
Damien Miller874d77b2000-10-14 16:23:11 +1100322#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
Ben Lindstromcb72e4f2002-06-21 00:41:51 +0000323#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
Damien Miller874d77b2000-10-14 16:23:11 +1100324#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
Kevin Stevesef4eea92001-02-05 12:42:17 +0000325#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
Damien Millereba71ba2000-04-29 23:57:08 +1000326
Damien Miller1f0311c2014-05-15 14:24:09 +1000327#ifdef WITH_OPENSSL
Ben Lindstrombba81212001-06-25 05:01:22 +0000328static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000329do_convert_to_ssh2(struct passwd *pw, struct sshkey *k)
Damien Millereba71ba2000-04-29 23:57:08 +1000330{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000331 size_t len;
Ben Lindstrom46c16222000-12-22 01:43:59 +0000332 u_char *blob;
Darren Tuckerd04758d2010-01-12 19:41:57 +1100333 char comment[61];
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000334 int r;
Damien Millereba71ba2000-04-29 23:57:08 +1000335
djm@openbsd.org3038a192015-04-17 13:19:22 +0000336 if ((r = sshkey_to_blob(k, &blob, &len)) != 0)
337 fatal("key_to_blob failed: %s", ssh_err(r));
Darren Tuckerd04758d2010-01-12 19:41:57 +1100338 /* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
339 snprintf(comment, sizeof(comment),
340 "%u-bit %s, converted by %s@%s from OpenSSH",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000341 sshkey_size(k), sshkey_type(k),
Damien Millereba71ba2000-04-29 23:57:08 +1000342 pw->pw_name, hostname);
Darren Tuckerd04758d2010-01-12 19:41:57 +1100343
344 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
345 fprintf(stdout, "Comment: \"%s\"\n", comment);
Damien Millereba71ba2000-04-29 23:57:08 +1000346 dump_base64(stdout, blob, len);
Damien Miller874d77b2000-10-14 16:23:11 +1100347 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000348 sshkey_free(k);
Darren Tuckera627d422013-06-02 07:31:17 +1000349 free(blob);
Damien Millereba71ba2000-04-29 23:57:08 +1000350 exit(0);
351}
352
Ben Lindstrombba81212001-06-25 05:01:22 +0000353static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000354do_convert_to_pkcs8(struct sshkey *k)
Damien Miller44b25042010-07-02 13:35:01 +1000355{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000356 switch (sshkey_type_plain(k->type)) {
Damien Miller44b25042010-07-02 13:35:01 +1000357 case KEY_RSA:
358 if (!PEM_write_RSA_PUBKEY(stdout, k->rsa))
359 fatal("PEM_write_RSA_PUBKEY failed");
360 break;
361 case KEY_DSA:
362 if (!PEM_write_DSA_PUBKEY(stdout, k->dsa))
363 fatal("PEM_write_DSA_PUBKEY failed");
364 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000365#ifdef OPENSSL_HAS_ECC
Damien Millereb8b60e2010-08-31 22:41:14 +1000366 case KEY_ECDSA:
367 if (!PEM_write_EC_PUBKEY(stdout, k->ecdsa))
368 fatal("PEM_write_EC_PUBKEY failed");
369 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000370#endif
Damien Miller44b25042010-07-02 13:35:01 +1000371 default:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000372 fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
Damien Miller44b25042010-07-02 13:35:01 +1000373 }
374 exit(0);
375}
376
377static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000378do_convert_to_pem(struct sshkey *k)
Damien Miller44b25042010-07-02 13:35:01 +1000379{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000380 switch (sshkey_type_plain(k->type)) {
Damien Miller44b25042010-07-02 13:35:01 +1000381 case KEY_RSA:
382 if (!PEM_write_RSAPublicKey(stdout, k->rsa))
383 fatal("PEM_write_RSAPublicKey failed");
384 break;
Damien Miller44b25042010-07-02 13:35:01 +1000385 default:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000386 fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
Damien Miller44b25042010-07-02 13:35:01 +1000387 }
388 exit(0);
389}
390
391static void
392do_convert_to(struct passwd *pw)
393{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000394 struct sshkey *k;
Damien Miller44b25042010-07-02 13:35:01 +1000395 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000396 int r;
Damien Miller44b25042010-07-02 13:35:01 +1000397
398 if (!have_identity)
399 ask_filename(pw, "Enter file in which the key is");
400 if (stat(identity_file, &st) < 0)
401 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000402 if ((r = sshkey_load_public(identity_file, &k, NULL)) != 0)
403 k = load_identity(identity_file);
Damien Miller44b25042010-07-02 13:35:01 +1000404 switch (convert_format) {
405 case FMT_RFC4716:
406 do_convert_to_ssh2(pw, k);
407 break;
408 case FMT_PKCS8:
409 do_convert_to_pkcs8(k);
410 break;
411 case FMT_PEM:
412 do_convert_to_pem(k);
413 break;
414 default:
415 fatal("%s: unknown key format %d", __func__, convert_format);
416 }
417 exit(0);
418}
419
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000420/*
421 * This is almost exactly the bignum1 encoding, but with 32 bit for length
422 * instead of 16.
423 */
Damien Miller44b25042010-07-02 13:35:01 +1000424static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000425buffer_get_bignum_bits(struct sshbuf *b, BIGNUM *value)
Damien Miller874d77b2000-10-14 16:23:11 +1100426{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000427 u_int bytes, bignum_bits;
428 int r;
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000429
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000430 if ((r = sshbuf_get_u32(b, &bignum_bits)) != 0)
431 fatal("%s: buffer error: %s", __func__, ssh_err(r));
432 bytes = (bignum_bits + 7) / 8;
433 if (sshbuf_len(b) < bytes)
434 fatal("%s: input buffer too small: need %d have %zu",
435 __func__, bytes, sshbuf_len(b));
436 if (BN_bin2bn(sshbuf_ptr(b), bytes, value) == NULL)
437 fatal("%s: BN_bin2bn failed", __func__);
438 if ((r = sshbuf_consume(b, bytes)) != 0)
439 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Miller874d77b2000-10-14 16:23:11 +1100440}
441
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000442static struct sshkey *
Ben Lindstrom90fd8142002-02-26 18:09:42 +0000443do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
Damien Miller874d77b2000-10-14 16:23:11 +1100444{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000445 struct sshbuf *b;
446 struct sshkey *key = NULL;
Damien Miller874d77b2000-10-14 16:23:11 +1100447 char *type, *cipher;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000448 u_char e1, e2, e3, *sig = NULL, data[] = "abcde12345";
449 int r, rlen, ktype;
450 u_int magic, i1, i2, i3, i4;
451 size_t slen;
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000452 u_long e;
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000453 BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;
454 BIGNUM *dsa_pub_key = NULL, *dsa_priv_key = NULL;
455 BIGNUM *rsa_n = NULL, *rsa_e = NULL, *rsa_d = NULL;
456 BIGNUM *rsa_p = NULL, *rsa_q = NULL, *rsa_iqmp = NULL;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000457 if ((b = sshbuf_from(blob, blen)) == NULL)
458 fatal("%s: sshbuf_from failed", __func__);
459 if ((r = sshbuf_get_u32(b, &magic)) != 0)
460 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Miller874d77b2000-10-14 16:23:11 +1100461
Damien Miller874d77b2000-10-14 16:23:11 +1100462 if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000463 error("bad magic 0x%x != 0x%x", magic,
464 SSH_COM_PRIVATE_KEY_MAGIC);
465 sshbuf_free(b);
Damien Miller874d77b2000-10-14 16:23:11 +1100466 return NULL;
467 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000468 if ((r = sshbuf_get_u32(b, &i1)) != 0 ||
469 (r = sshbuf_get_cstring(b, &type, NULL)) != 0 ||
470 (r = sshbuf_get_cstring(b, &cipher, NULL)) != 0 ||
471 (r = sshbuf_get_u32(b, &i2)) != 0 ||
472 (r = sshbuf_get_u32(b, &i3)) != 0 ||
473 (r = sshbuf_get_u32(b, &i4)) != 0)
474 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Miller80163902007-01-05 16:30:16 +1100475 debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
Damien Miller874d77b2000-10-14 16:23:11 +1100476 if (strcmp(cipher, "none") != 0) {
477 error("unsupported cipher %s", cipher);
Darren Tuckera627d422013-06-02 07:31:17 +1000478 free(cipher);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000479 sshbuf_free(b);
Darren Tuckera627d422013-06-02 07:31:17 +1000480 free(type);
Damien Miller874d77b2000-10-14 16:23:11 +1100481 return NULL;
482 }
Darren Tuckera627d422013-06-02 07:31:17 +1000483 free(cipher);
Damien Miller874d77b2000-10-14 16:23:11 +1100484
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000485 if (strstr(type, "dsa")) {
486 ktype = KEY_DSA;
487 } else if (strstr(type, "rsa")) {
488 ktype = KEY_RSA;
489 } else {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000490 sshbuf_free(b);
Darren Tuckera627d422013-06-02 07:31:17 +1000491 free(type);
Damien Miller874d77b2000-10-14 16:23:11 +1100492 return NULL;
493 }
djm@openbsd.org6da046f2018-09-14 04:17:44 +0000494 if ((key = sshkey_new(ktype)) == NULL)
495 fatal("sshkey_new failed");
Darren Tuckera627d422013-06-02 07:31:17 +1000496 free(type);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000497
498 switch (key->type) {
499 case KEY_DSA:
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000500 if ((dsa_p = BN_new()) == NULL ||
501 (dsa_q = BN_new()) == NULL ||
502 (dsa_g = BN_new()) == NULL ||
503 (dsa_pub_key = BN_new()) == NULL ||
504 (dsa_priv_key = BN_new()) == NULL)
505 fatal("%s: BN_new", __func__);
506 buffer_get_bignum_bits(b, dsa_p);
507 buffer_get_bignum_bits(b, dsa_g);
508 buffer_get_bignum_bits(b, dsa_q);
509 buffer_get_bignum_bits(b, dsa_pub_key);
510 buffer_get_bignum_bits(b, dsa_priv_key);
511 if (!DSA_set0_pqg(key->dsa, dsa_p, dsa_q, dsa_g))
512 fatal("%s: DSA_set0_pqg failed", __func__);
513 dsa_p = dsa_q = dsa_g = NULL; /* transferred */
514 if (!DSA_set0_key(key->dsa, dsa_pub_key, dsa_priv_key))
515 fatal("%s: DSA_set0_key failed", __func__);
516 dsa_pub_key = dsa_priv_key = NULL; /* transferred */
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000517 break;
518 case KEY_RSA:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000519 if ((r = sshbuf_get_u8(b, &e1)) != 0 ||
520 (e1 < 30 && (r = sshbuf_get_u8(b, &e2)) != 0) ||
521 (e1 < 30 && (r = sshbuf_get_u8(b, &e3)) != 0))
522 fatal("%s: buffer error: %s", __func__, ssh_err(r));
523 e = e1;
Ben Lindstrom34f91882001-06-25 04:47:54 +0000524 debug("e %lx", e);
525 if (e < 30) {
526 e <<= 8;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000527 e += e2;
Ben Lindstrom34f91882001-06-25 04:47:54 +0000528 debug("e %lx", e);
529 e <<= 8;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000530 e += e3;
Ben Lindstrom34f91882001-06-25 04:47:54 +0000531 debug("e %lx", e);
532 }
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000533 if ((rsa_e = BN_new()) == NULL)
534 fatal("%s: BN_new", __func__);
535 if (!BN_set_word(rsa_e, e)) {
536 BN_clear_free(rsa_e);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000537 sshbuf_free(b);
538 sshkey_free(key);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000539 return NULL;
540 }
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000541 if ((rsa_n = BN_new()) == NULL ||
542 (rsa_d = BN_new()) == NULL ||
543 (rsa_p = BN_new()) == NULL ||
544 (rsa_q = BN_new()) == NULL ||
545 (rsa_iqmp = BN_new()) == NULL)
546 fatal("%s: BN_new", __func__);
547 buffer_get_bignum_bits(b, rsa_d);
548 buffer_get_bignum_bits(b, rsa_n);
549 buffer_get_bignum_bits(b, rsa_iqmp);
550 buffer_get_bignum_bits(b, rsa_q);
551 buffer_get_bignum_bits(b, rsa_p);
552 if (!RSA_set0_key(key->rsa, rsa_n, rsa_e, rsa_d))
553 fatal("%s: RSA_set0_key failed", __func__);
554 rsa_n = rsa_e = rsa_d = NULL; /* transferred */
555 if (!RSA_set0_factors(key->rsa, rsa_p, rsa_q))
556 fatal("%s: RSA_set0_factors failed", __func__);
557 rsa_p = rsa_q = NULL; /* transferred */
558 if ((r = ssh_rsa_complete_crt_parameters(key, rsa_iqmp)) != 0)
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000559 fatal("generate RSA parameters failed: %s", ssh_err(r));
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000560 BN_clear_free(rsa_iqmp);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000561 break;
562 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000563 rlen = sshbuf_len(b);
Ben Lindstrom1c37c6a2001-12-06 18:00:18 +0000564 if (rlen != 0)
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000565 error("do_convert_private_ssh2_from_blob: "
566 "remaining bytes in key blob %d", rlen);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000567 sshbuf_free(b);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000568
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000569 /* try the key */
markus@openbsd.org76c9fbb2015-12-04 16:41:28 +0000570 if (sshkey_sign(key, &sig, &slen, data, sizeof(data), NULL, 0) != 0 ||
djm@openbsd.org04c7e282017-12-18 02:25:15 +0000571 sshkey_verify(key, sig, slen, data, sizeof(data), NULL, 0) != 0) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000572 sshkey_free(key);
573 free(sig);
574 return NULL;
575 }
Darren Tuckera627d422013-06-02 07:31:17 +1000576 free(sig);
Damien Miller874d77b2000-10-14 16:23:11 +1100577 return key;
578}
579
Damien Miller8056a9d2006-03-15 12:05:40 +1100580static int
581get_line(FILE *fp, char *line, size_t len)
582{
583 int c;
584 size_t pos = 0;
585
586 line[0] = '\0';
587 while ((c = fgetc(fp)) != EOF) {
djm@openbsd.org3038a192015-04-17 13:19:22 +0000588 if (pos >= len - 1)
589 fatal("input line too long.");
Damien Miller90967402006-03-26 14:07:26 +1100590 switch (c) {
Damien Miller8056a9d2006-03-15 12:05:40 +1100591 case '\r':
592 c = fgetc(fp);
djm@openbsd.org3038a192015-04-17 13:19:22 +0000593 if (c != EOF && c != '\n' && ungetc(c, fp) == EOF)
594 fatal("unget: %s", strerror(errno));
Damien Miller8056a9d2006-03-15 12:05:40 +1100595 return pos;
596 case '\n':
597 return pos;
598 }
599 line[pos++] = c;
600 line[pos] = '\0';
601 }
Damien Miller6c7439f2007-01-05 16:29:55 +1100602 /* We reached EOF */
603 return -1;
Damien Miller8056a9d2006-03-15 12:05:40 +1100604}
605
Ben Lindstrombba81212001-06-25 05:01:22 +0000606static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000607do_convert_from_ssh2(struct passwd *pw, struct sshkey **k, int *private)
Damien Millereba71ba2000-04-29 23:57:08 +1000608{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000609 int r, blen, escaped = 0;
Ben Lindstrom155b9812002-04-02 20:26:26 +0000610 u_int len;
Damien Miller8056a9d2006-03-15 12:05:40 +1100611 char line[1024];
Ben Lindstrom9e0ddd42001-09-18 05:41:19 +0000612 u_char blob[8096];
Damien Millereba71ba2000-04-29 23:57:08 +1000613 char encoded[8096];
Damien Millereba71ba2000-04-29 23:57:08 +1000614 FILE *fp;
615
Damien Millerba3420a2010-06-26 09:39:07 +1000616 if ((fp = fopen(identity_file, "r")) == NULL)
617 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
Damien Millereba71ba2000-04-29 23:57:08 +1000618 encoded[0] = '\0';
Damien Miller8056a9d2006-03-15 12:05:40 +1100619 while ((blen = get_line(fp, line, sizeof(line))) != -1) {
Damien Miller746d1a62013-07-18 16:13:02 +1000620 if (blen > 0 && line[blen - 1] == '\\')
Damien Miller30c3d422000-05-09 11:02:59 +1000621 escaped++;
Damien Millereba71ba2000-04-29 23:57:08 +1000622 if (strncmp(line, "----", 4) == 0 ||
623 strstr(line, ": ") != NULL) {
Damien Miller874d77b2000-10-14 16:23:11 +1100624 if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
Damien Miller44b25042010-07-02 13:35:01 +1000625 *private = 1;
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000626 if (strstr(line, " END ") != NULL) {
627 break;
628 }
Ben Lindstrom30358602001-04-24 16:59:28 +0000629 /* fprintf(stderr, "ignore: %s", line); */
Damien Millereba71ba2000-04-29 23:57:08 +1000630 continue;
631 }
Damien Miller30c3d422000-05-09 11:02:59 +1000632 if (escaped) {
633 escaped--;
Ben Lindstrom30358602001-04-24 16:59:28 +0000634 /* fprintf(stderr, "escaped: %s", line); */
Damien Miller30c3d422000-05-09 11:02:59 +1000635 continue;
Damien Millereba71ba2000-04-29 23:57:08 +1000636 }
Damien Millereba71ba2000-04-29 23:57:08 +1000637 strlcat(encoded, line, sizeof(encoded));
638 }
Ben Lindstrom155b9812002-04-02 20:26:26 +0000639 len = strlen(encoded);
640 if (((len % 4) == 3) &&
641 (encoded[len-1] == '=') &&
642 (encoded[len-2] == '=') &&
643 (encoded[len-3] == '='))
644 encoded[len-3] = '\0';
Damien Miller4a8ed542002-01-22 23:33:31 +1100645 blen = uudecode(encoded, blob, sizeof(blob));
djm@openbsd.org3038a192015-04-17 13:19:22 +0000646 if (blen < 0)
647 fatal("uudecode failed.");
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000648 if (*private)
649 *k = do_convert_private_ssh2_from_blob(blob, blen);
djm@openbsd.org3038a192015-04-17 13:19:22 +0000650 else if ((r = sshkey_from_blob(blob, blen, k)) != 0)
651 fatal("decode blob failed: %s", ssh_err(r));
Damien Miller44b25042010-07-02 13:35:01 +1000652 fclose(fp);
653}
654
655static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000656do_convert_from_pkcs8(struct sshkey **k, int *private)
Damien Miller44b25042010-07-02 13:35:01 +1000657{
658 EVP_PKEY *pubkey;
659 FILE *fp;
660
661 if ((fp = fopen(identity_file, "r")) == NULL)
662 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
663 if ((pubkey = PEM_read_PUBKEY(fp, NULL, NULL, NULL)) == NULL) {
664 fatal("%s: %s is not a recognised public key format", __func__,
665 identity_file);
666 }
667 fclose(fp);
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000668 switch (EVP_PKEY_base_id(pubkey)) {
Damien Miller44b25042010-07-02 13:35:01 +1000669 case EVP_PKEY_RSA:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000670 if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
671 fatal("sshkey_new failed");
Damien Miller44b25042010-07-02 13:35:01 +1000672 (*k)->type = KEY_RSA;
673 (*k)->rsa = EVP_PKEY_get1_RSA(pubkey);
674 break;
675 case EVP_PKEY_DSA:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000676 if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
677 fatal("sshkey_new failed");
Damien Miller44b25042010-07-02 13:35:01 +1000678 (*k)->type = KEY_DSA;
679 (*k)->dsa = EVP_PKEY_get1_DSA(pubkey);
680 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000681#ifdef OPENSSL_HAS_ECC
Damien Millereb8b60e2010-08-31 22:41:14 +1000682 case EVP_PKEY_EC:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000683 if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
684 fatal("sshkey_new failed");
Damien Millereb8b60e2010-08-31 22:41:14 +1000685 (*k)->type = KEY_ECDSA;
686 (*k)->ecdsa = EVP_PKEY_get1_EC_KEY(pubkey);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000687 (*k)->ecdsa_nid = sshkey_ecdsa_key_to_nid((*k)->ecdsa);
Damien Millereb8b60e2010-08-31 22:41:14 +1000688 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000689#endif
Damien Miller44b25042010-07-02 13:35:01 +1000690 default:
691 fatal("%s: unsupported pubkey type %d", __func__,
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000692 EVP_PKEY_base_id(pubkey));
Damien Miller44b25042010-07-02 13:35:01 +1000693 }
694 EVP_PKEY_free(pubkey);
695 return;
696}
697
698static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000699do_convert_from_pem(struct sshkey **k, int *private)
Damien Miller44b25042010-07-02 13:35:01 +1000700{
701 FILE *fp;
702 RSA *rsa;
Damien Miller44b25042010-07-02 13:35:01 +1000703
704 if ((fp = fopen(identity_file, "r")) == NULL)
705 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
706 if ((rsa = PEM_read_RSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000707 if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
708 fatal("sshkey_new failed");
Damien Miller44b25042010-07-02 13:35:01 +1000709 (*k)->type = KEY_RSA;
710 (*k)->rsa = rsa;
711 fclose(fp);
712 return;
713 }
Damien Miller44b25042010-07-02 13:35:01 +1000714 fatal("%s: unrecognised raw private key format", __func__);
715}
716
717static void
718do_convert_from(struct passwd *pw)
719{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000720 struct sshkey *k = NULL;
721 int r, private = 0, ok = 0;
Damien Miller44b25042010-07-02 13:35:01 +1000722 struct stat st;
723
724 if (!have_identity)
725 ask_filename(pw, "Enter file in which the key is");
726 if (stat(identity_file, &st) < 0)
727 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
728
729 switch (convert_format) {
730 case FMT_RFC4716:
731 do_convert_from_ssh2(pw, &k, &private);
732 break;
733 case FMT_PKCS8:
734 do_convert_from_pkcs8(&k, &private);
735 break;
736 case FMT_PEM:
737 do_convert_from_pem(&k, &private);
738 break;
739 default:
740 fatal("%s: unknown key format %d", __func__, convert_format);
741 }
742
djm@openbsd.org7a2c3682015-01-30 00:59:19 +0000743 if (!private) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000744 if ((r = sshkey_write(k, stdout)) == 0)
745 ok = 1;
Damien Miller44b25042010-07-02 13:35:01 +1000746 if (ok)
747 fprintf(stdout, "\n");
djm@openbsd.org7a2c3682015-01-30 00:59:19 +0000748 } else {
Damien Miller44b25042010-07-02 13:35:01 +1000749 switch (k->type) {
750 case KEY_DSA:
751 ok = PEM_write_DSAPrivateKey(stdout, k->dsa, NULL,
752 NULL, 0, NULL, NULL);
753 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000754#ifdef OPENSSL_HAS_ECC
Damien Millereb8b60e2010-08-31 22:41:14 +1000755 case KEY_ECDSA:
756 ok = PEM_write_ECPrivateKey(stdout, k->ecdsa, NULL,
757 NULL, 0, NULL, NULL);
758 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000759#endif
Damien Miller44b25042010-07-02 13:35:01 +1000760 case KEY_RSA:
761 ok = PEM_write_RSAPrivateKey(stdout, k->rsa, NULL,
762 NULL, 0, NULL, NULL);
763 break;
764 default:
765 fatal("%s: unsupported key type %s", __func__,
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000766 sshkey_type(k));
Damien Miller44b25042010-07-02 13:35:01 +1000767 }
768 }
769
djm@openbsd.org3038a192015-04-17 13:19:22 +0000770 if (!ok)
771 fatal("key write failed");
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000772 sshkey_free(k);
Damien Millereba71ba2000-04-29 23:57:08 +1000773 exit(0);
774}
Damien Miller1f0311c2014-05-15 14:24:09 +1000775#endif
Damien Millereba71ba2000-04-29 23:57:08 +1000776
Ben Lindstrombba81212001-06-25 05:01:22 +0000777static void
Damien Millereba71ba2000-04-29 23:57:08 +1000778do_print_public(struct passwd *pw)
779{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000780 struct sshkey *prv;
Damien Millereba71ba2000-04-29 23:57:08 +1000781 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000782 int r;
Damien Millereba71ba2000-04-29 23:57:08 +1000783
784 if (!have_identity)
785 ask_filename(pw, "Enter file in which the key is");
djm@openbsd.org3038a192015-04-17 13:19:22 +0000786 if (stat(identity_file, &st) < 0)
787 fatal("%s: %s", identity_file, strerror(errno));
Ben Lindstromd78ae762001-06-05 20:35:09 +0000788 prv = load_identity(identity_file);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000789 if ((r = sshkey_write(prv, stdout)) != 0)
markus@openbsd.org7da5df12017-05-30 14:16:41 +0000790 error("sshkey_write failed: %s", ssh_err(r));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000791 sshkey_free(prv);
Damien Millereba71ba2000-04-29 23:57:08 +1000792 fprintf(stdout, "\n");
793 exit(0);
794}
795
Ben Lindstromcd392282001-07-04 03:44:03 +0000796static void
Damien Miller757f34e2010-08-05 13:05:31 +1000797do_download(struct passwd *pw)
Ben Lindstromcd392282001-07-04 03:44:03 +0000798{
Damien Miller7ea845e2010-02-12 09:21:02 +1100799#ifdef ENABLE_PKCS11
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000800 struct sshkey **keys = NULL;
Damien Miller7ea845e2010-02-12 09:21:02 +1100801 int i, nkeys;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000802 enum sshkey_fp_rep rep;
djm@openbsd.org56d1c832014-12-21 22:27:55 +0000803 int fptype;
Damien Millerec77c952013-01-09 15:58:00 +1100804 char *fp, *ra;
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000805
djm@openbsd.org56d1c832014-12-21 22:27:55 +0000806 fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
807 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
Damien Miller1422c082013-01-09 16:44:54 +1100808
Damien Miller7ea845e2010-02-12 09:21:02 +1100809 pkcs11_init(0);
810 nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys);
811 if (nkeys <= 0)
812 fatal("cannot read public key from pkcs11");
813 for (i = 0; i < nkeys; i++) {
Damien Millerec77c952013-01-09 15:58:00 +1100814 if (print_fingerprint) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000815 fp = sshkey_fingerprint(keys[i], fptype, rep);
816 ra = sshkey_fingerprint(keys[i], fingerprint_hash,
Damien Millerec77c952013-01-09 15:58:00 +1100817 SSH_FP_RANDOMART);
djm@openbsd.org9ce86c92015-01-28 22:36:00 +0000818 if (fp == NULL || ra == NULL)
819 fatal("%s: sshkey_fingerprint fail", __func__);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000820 printf("%u %s %s (PKCS11 key)\n", sshkey_size(keys[i]),
821 fp, sshkey_type(keys[i]));
Damien Millerec77c952013-01-09 15:58:00 +1100822 if (log_level >= SYSLOG_LEVEL_VERBOSE)
823 printf("%s\n", ra);
Darren Tuckera627d422013-06-02 07:31:17 +1000824 free(ra);
825 free(fp);
Damien Millerec77c952013-01-09 15:58:00 +1100826 } else {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000827 (void) sshkey_write(keys[i], stdout); /* XXX check */
Damien Millerec77c952013-01-09 15:58:00 +1100828 fprintf(stdout, "\n");
829 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000830 sshkey_free(keys[i]);
Ben Lindstrom0936a5b2002-03-26 03:17:42 +0000831 }
Darren Tuckera627d422013-06-02 07:31:17 +1000832 free(keys);
Damien Miller7ea845e2010-02-12 09:21:02 +1100833 pkcs11_terminate();
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000834 exit(0);
Damien Miller7ea845e2010-02-12 09:21:02 +1100835#else
836 fatal("no pkcs11 support");
837#endif /* ENABLE_PKCS11 */
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000838}
Ben Lindstromcd392282001-07-04 03:44:03 +0000839
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000840static struct sshkey *
841try_read_key(char **cpp)
842{
843 struct sshkey *ret;
844 int r;
845
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000846 if ((ret = sshkey_new(KEY_UNSPEC)) == NULL)
847 fatal("sshkey_new failed");
848 if ((r = sshkey_read(ret, cpp)) == 0)
849 return ret;
850 /* Not a key */
851 sshkey_free(ret);
852 return NULL;
853}
854
855static void
856fingerprint_one_key(const struct sshkey *public, const char *comment)
857{
858 char *fp = NULL, *ra = NULL;
859 enum sshkey_fp_rep rep;
860 int fptype;
861
862 fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
863 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
864 fp = sshkey_fingerprint(public, fptype, rep);
865 ra = sshkey_fingerprint(public, fingerprint_hash, SSH_FP_RANDOMART);
866 if (fp == NULL || ra == NULL)
867 fatal("%s: sshkey_fingerprint failed", __func__);
djm@openbsd.orga287c5a2017-02-10 03:36:40 +0000868 mprintf("%u %s %s (%s)\n", sshkey_size(public), fp,
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000869 comment ? comment : "no comment", sshkey_type(public));
870 if (log_level >= SYSLOG_LEVEL_VERBOSE)
871 printf("%s\n", ra);
872 free(ra);
873 free(fp);
874}
875
876static void
877fingerprint_private(const char *path)
878{
879 struct stat st;
880 char *comment = NULL;
881 struct sshkey *public = NULL;
882 int r;
883
884 if (stat(identity_file, &st) < 0)
885 fatal("%s: %s", path, strerror(errno));
djm@openbsd.orgbcb7bc72015-11-18 08:37:28 +0000886 if ((r = sshkey_load_public(path, &public, &comment)) != 0) {
887 debug("load public \"%s\": %s", path, ssh_err(r));
888 if ((r = sshkey_load_private(path, NULL,
889 &public, &comment)) != 0) {
890 debug("load private \"%s\": %s", path, ssh_err(r));
891 fatal("%s is not a key file.", path);
892 }
893 }
894
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000895 fingerprint_one_key(public, comment);
896 sshkey_free(public);
897 free(comment);
898}
899
Ben Lindstrombba81212001-06-25 05:01:22 +0000900static void
Damien Miller10f6f6b1999-11-17 17:29:08 +1100901do_fingerprint(struct passwd *pw)
902{
Damien Miller98c7ad62000-03-09 21:27:49 +1100903 FILE *f;
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000904 struct sshkey *public = NULL;
markus@openbsd.org7f906352018-06-06 18:29:18 +0000905 char *comment = NULL, *cp, *ep, *line = NULL;
906 size_t linesize = 0;
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000907 int i, invalid = 1;
908 const char *path;
djm@openbsd.org1a31d022016-05-02 08:49:03 +0000909 u_long lnum = 0;
Damien Miller10f6f6b1999-11-17 17:29:08 +1100910
Damien Miller95def091999-11-25 00:26:21 +1100911 if (!have_identity)
912 ask_filename(pw, "Enter file in which the key is");
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000913 path = identity_file;
Damien Miller98c7ad62000-03-09 21:27:49 +1100914
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000915 if (strcmp(identity_file, "-") == 0) {
916 f = stdin;
917 path = "(stdin)";
918 } else if ((f = fopen(path, "r")) == NULL)
919 fatal("%s: %s: %s", __progname, path, strerror(errno));
Damien Miller98c7ad62000-03-09 21:27:49 +1100920
markus@openbsd.org7f906352018-06-06 18:29:18 +0000921 while (getline(&line, &linesize, f) != -1) {
922 lnum++;
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000923 cp = line;
924 cp[strcspn(cp, "\n")] = '\0';
925 /* Trim leading space and comments */
926 cp = line + strspn(line, " \t");
927 if (*cp == '#' || *cp == '\0')
928 continue;
929
930 /*
931 * Input may be plain keys, private keys, authorized_keys
932 * or known_hosts.
933 */
934
935 /*
936 * Try private keys first. Assume a key is private if
937 * "SSH PRIVATE KEY" appears on the first line and we're
938 * not reading from stdin (XXX support private keys on stdin).
939 */
940 if (lnum == 1 && strcmp(identity_file, "-") != 0 &&
djm@openbsd.orgbcb7bc72015-11-18 08:37:28 +0000941 strstr(cp, "PRIVATE KEY") != NULL) {
markus@openbsd.org7f906352018-06-06 18:29:18 +0000942 free(line);
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000943 fclose(f);
944 fingerprint_private(path);
945 exit(0);
946 }
947
948 /*
949 * If it's not a private key, then this must be prepared to
950 * accept a public key prefixed with a hostname or options.
951 * Try a bare key first, otherwise skip the leading stuff.
952 */
953 if ((public = try_read_key(&cp)) == NULL) {
954 i = strtol(cp, &ep, 10);
955 if (i == 0 || ep == NULL ||
956 (*ep != ' ' && *ep != '\t')) {
957 int quoted = 0;
958
959 comment = cp;
960 for (; *cp && (quoted || (*cp != ' ' &&
961 *cp != '\t')); cp++) {
962 if (*cp == '\\' && cp[1] == '"')
963 cp++; /* Skip both */
964 else if (*cp == '"')
965 quoted = !quoted;
966 }
967 if (!*cp)
968 continue;
969 *cp++ = '\0';
970 }
971 }
972 /* Retry after parsing leading hostname/key options */
973 if (public == NULL && (public = try_read_key(&cp)) == NULL) {
djm@openbsd.org1a31d022016-05-02 08:49:03 +0000974 debug("%s:%lu: not a public key", path, lnum);
Damien Millerba3420a2010-06-26 09:39:07 +1000975 continue;
Damien Miller95def091999-11-25 00:26:21 +1100976 }
Damien Millerba3420a2010-06-26 09:39:07 +1000977
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000978 /* Find trailing comment, if any */
979 for (; *cp == ' ' || *cp == '\t'; cp++)
Damien Millerba3420a2010-06-26 09:39:07 +1000980 ;
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000981 if (*cp != '\0' && *cp != '#')
Damien Millerba3420a2010-06-26 09:39:07 +1000982 comment = cp;
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000983
984 fingerprint_one_key(public, comment);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000985 sshkey_free(public);
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000986 invalid = 0; /* One good key in the file is sufficient */
Damien Miller95def091999-11-25 00:26:21 +1100987 }
Damien Millerba3420a2010-06-26 09:39:07 +1000988 fclose(f);
markus@openbsd.org7f906352018-06-06 18:29:18 +0000989 free(line);
Damien Millerba3420a2010-06-26 09:39:07 +1000990
djm@openbsd.org3038a192015-04-17 13:19:22 +0000991 if (invalid)
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000992 fatal("%s is not a public key file.", path);
Damien Miller95def091999-11-25 00:26:21 +1100993 exit(0);
Damien Miller10f6f6b1999-11-17 17:29:08 +1100994}
995
Damien Miller4b42d7f2005-03-01 21:48:35 +1100996static void
Damien Miller58f1baf2011-05-05 14:06:15 +1000997do_gen_all_hostkeys(struct passwd *pw)
998{
999 struct {
1000 char *key_type;
1001 char *key_type_display;
1002 char *path;
1003 } key_types[] = {
djm@openbsd.org5c27e3b2015-03-23 06:06:38 +00001004#ifdef WITH_OPENSSL
Damien Miller58f1baf2011-05-05 14:06:15 +10001005 { "rsa", "RSA" ,_PATH_HOST_RSA_KEY_FILE },
1006 { "dsa", "DSA", _PATH_HOST_DSA_KEY_FILE },
Damien Millerb56e4932012-02-06 07:41:27 +11001007#ifdef OPENSSL_HAS_ECC
Damien Miller58f1baf2011-05-05 14:06:15 +10001008 { "ecdsa", "ECDSA",_PATH_HOST_ECDSA_KEY_FILE },
djm@openbsd.org5c27e3b2015-03-23 06:06:38 +00001009#endif /* OPENSSL_HAS_ECC */
1010#endif /* WITH_OPENSSL */
Damien Miller5be9d9e2013-12-07 11:24:01 +11001011 { "ed25519", "ED25519",_PATH_HOST_ED25519_KEY_FILE },
markus@openbsd.org1b11ea72018-02-23 15:58:37 +00001012#ifdef WITH_XMSS
1013 { "xmss", "XMSS",_PATH_HOST_XMSS_KEY_FILE },
1014#endif /* WITH_XMSS */
Damien Miller58f1baf2011-05-05 14:06:15 +10001015 { NULL, NULL, NULL }
1016 };
1017
1018 int first = 0;
1019 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001020 struct sshkey *private, *public;
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001021 char comment[1024], *prv_tmp, *pub_tmp, *prv_file, *pub_file;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001022 int i, type, fd, r;
Damien Miller58f1baf2011-05-05 14:06:15 +10001023 FILE *f;
1024
1025 for (i = 0; key_types[i].key_type; i++) {
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001026 public = private = NULL;
1027 prv_tmp = pub_tmp = prv_file = pub_file = NULL;
1028
1029 xasprintf(&prv_file, "%s%s",
1030 identity_file, key_types[i].path);
1031
1032 /* Check whether private key exists and is not zero-length */
1033 if (stat(prv_file, &st) == 0) {
1034 if (st.st_size != 0)
1035 goto next;
1036 } else if (errno != ENOENT) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001037 error("Could not stat %s: %s", key_types[i].path,
Damien Miller58f1baf2011-05-05 14:06:15 +10001038 strerror(errno));
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001039 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001040 }
1041
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001042 /*
1043 * Private key doesn't exist or is invalid; proceed with
1044 * key generation.
1045 */
1046 xasprintf(&prv_tmp, "%s%s.XXXXXXXXXX",
1047 identity_file, key_types[i].path);
1048 xasprintf(&pub_tmp, "%s%s.pub.XXXXXXXXXX",
1049 identity_file, key_types[i].path);
1050 xasprintf(&pub_file, "%s%s.pub",
1051 identity_file, key_types[i].path);
1052
Damien Miller58f1baf2011-05-05 14:06:15 +10001053 if (first == 0) {
1054 first = 1;
1055 printf("%s: generating new host keys: ", __progname);
1056 }
1057 printf("%s ", key_types[i].key_type_display);
1058 fflush(stdout);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001059 type = sshkey_type_from_name(key_types[i].key_type);
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001060 if ((fd = mkstemp(prv_tmp)) == -1) {
1061 error("Could not save your public key in %s: %s",
1062 prv_tmp, strerror(errno));
1063 goto failnext;
1064 }
1065 close(fd); /* just using mkstemp() to generate/reserve a name */
Damien Miller58f1baf2011-05-05 14:06:15 +10001066 bits = 0;
djm@openbsd.org7efb4552015-01-18 13:22:28 +00001067 type_bits_valid(type, NULL, &bits);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001068 if ((r = sshkey_generate(type, bits, &private)) != 0) {
markus@openbsd.org7da5df12017-05-30 14:16:41 +00001069 error("sshkey_generate failed: %s", ssh_err(r));
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001070 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001071 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001072 if ((r = sshkey_from_private(private, &public)) != 0)
1073 fatal("sshkey_from_private failed: %s", ssh_err(r));
Damien Miller58f1baf2011-05-05 14:06:15 +10001074 snprintf(comment, sizeof comment, "%s@%s", pw->pw_name,
1075 hostname);
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001076 if ((r = sshkey_save_private(private, prv_tmp, "",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001077 comment, use_new_format, new_format_cipher, rounds)) != 0) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001078 error("Saving key \"%s\" failed: %s",
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001079 prv_tmp, ssh_err(r));
1080 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001081 }
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001082 if ((fd = mkstemp(pub_tmp)) == -1) {
1083 error("Could not save your public key in %s: %s",
1084 pub_tmp, strerror(errno));
1085 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001086 }
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001087 (void)fchmod(fd, 0644);
Damien Miller58f1baf2011-05-05 14:06:15 +10001088 f = fdopen(fd, "w");
1089 if (f == NULL) {
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001090 error("fdopen %s failed: %s", pub_tmp, strerror(errno));
doug@openbsd.org7df88182014-08-21 01:08:52 +00001091 close(fd);
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001092 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001093 }
djm@openbsd.orgbb8b4422015-01-16 15:55:07 +00001094 if ((r = sshkey_write(public, f)) != 0) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001095 error("write key failed: %s", ssh_err(r));
doug@openbsd.org7df88182014-08-21 01:08:52 +00001096 fclose(f);
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001097 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001098 }
1099 fprintf(f, " %s\n", comment);
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001100 if (ferror(f) != 0) {
1101 error("write key failed: %s", strerror(errno));
1102 fclose(f);
1103 goto failnext;
1104 }
1105 if (fclose(f) != 0) {
1106 error("key close failed: %s", strerror(errno));
1107 goto failnext;
1108 }
Damien Miller58f1baf2011-05-05 14:06:15 +10001109
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001110 /* Rename temporary files to their permanent locations. */
1111 if (rename(pub_tmp, pub_file) != 0) {
1112 error("Unable to move %s into position: %s",
1113 pub_file, strerror(errno));
1114 goto failnext;
1115 }
1116 if (rename(prv_tmp, prv_file) != 0) {
1117 error("Unable to move %s into position: %s",
1118 key_types[i].path, strerror(errno));
1119 failnext:
1120 first = 0;
1121 goto next;
1122 }
1123 next:
1124 sshkey_free(private);
1125 sshkey_free(public);
1126 free(prv_tmp);
1127 free(pub_tmp);
1128 free(prv_file);
1129 free(pub_file);
Damien Miller58f1baf2011-05-05 14:06:15 +10001130 }
1131 if (first != 0)
1132 printf("\n");
1133}
1134
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001135struct known_hosts_ctx {
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001136 const char *host; /* Hostname searched for in find/delete case */
1137 FILE *out; /* Output file, stdout for find_hosts case */
1138 int has_unhashed; /* When hashing, original had unhashed hosts */
1139 int found_key; /* For find/delete, host was found */
1140 int invalid; /* File contained invalid items; don't delete */
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001141};
1142
1143static int
1144known_hosts_hash(struct hostkey_foreach_line *l, void *_ctx)
Damien Miller4b42d7f2005-03-01 21:48:35 +11001145{
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001146 struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
1147 char *hashed, *cp, *hosts, *ohosts;
1148 int has_wild = l->hosts && strcspn(l->hosts, "*?!") != strlen(l->hosts);
dtucker@openbsd.org18501152017-03-06 02:03:20 +00001149 int was_hashed = l->hosts && l->hosts[0] == HASH_DELIM;
Darren Tucker0f7e9102008-06-08 12:54:29 +10001150
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001151 switch (l->status) {
1152 case HKF_STATUS_OK:
1153 case HKF_STATUS_MATCHED:
1154 /*
1155 * Don't hash hosts already already hashed, with wildcard
1156 * characters or a CA/revocation marker.
1157 */
djm@openbsd.org12d37672017-03-03 06:13:11 +00001158 if (was_hashed || has_wild || l->marker != MRK_NONE) {
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001159 fprintf(ctx->out, "%s\n", l->line);
1160 if (has_wild && !find_host) {
dtucker@openbsd.orgd0723702017-03-06 00:44:51 +00001161 logit("%s:%lu: ignoring host name "
djm@openbsd.org3038a192015-04-17 13:19:22 +00001162 "with wildcard: %.64s", l->path,
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001163 l->linenum, l->hosts);
1164 }
1165 return 0;
1166 }
1167 /*
1168 * Split any comma-separated hostnames from the host list,
1169 * hash and store separately.
1170 */
1171 ohosts = hosts = xstrdup(l->hosts);
1172 while ((cp = strsep(&hosts, ",")) != NULL && *cp != '\0') {
djm@openbsd.orgdb259722017-03-10 04:26:06 +00001173 lowercase(cp);
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001174 if ((hashed = host_hash(cp, NULL, 0)) == NULL)
1175 fatal("hash_host failed");
1176 fprintf(ctx->out, "%s %s\n", hashed, l->rawkey);
1177 ctx->has_unhashed = 1;
1178 }
1179 free(ohosts);
1180 return 0;
1181 case HKF_STATUS_INVALID:
1182 /* Retain invalid lines, but mark file as invalid. */
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001183 ctx->invalid = 1;
dtucker@openbsd.orgd0723702017-03-06 00:44:51 +00001184 logit("%s:%lu: invalid line", l->path, l->linenum);
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001185 /* FALLTHROUGH */
1186 default:
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001187 fprintf(ctx->out, "%s\n", l->line);
1188 return 0;
Darren Tucker0f7e9102008-06-08 12:54:29 +10001189 }
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001190 /* NOTREACHED */
1191 return -1;
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001192}
1193
1194static int
1195known_hosts_find_delete(struct hostkey_foreach_line *l, void *_ctx)
1196{
1197 struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001198 enum sshkey_fp_rep rep;
1199 int fptype;
1200 char *fp;
1201
1202 fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
1203 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001204
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001205 if (l->status == HKF_STATUS_MATCHED) {
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001206 if (delete_host) {
1207 if (l->marker != MRK_NONE) {
1208 /* Don't remove CA and revocation lines */
1209 fprintf(ctx->out, "%s\n", l->line);
1210 } else {
1211 /*
1212 * Hostname matches and has no CA/revoke
1213 * marker, delete it by *not* writing the
1214 * line to ctx->out.
1215 */
1216 ctx->found_key = 1;
1217 if (!quiet)
dtucker@openbsd.orgd0723702017-03-06 00:44:51 +00001218 printf("# Host %s found: line %lu\n",
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001219 ctx->host, l->linenum);
1220 }
1221 return 0;
1222 } else if (find_host) {
1223 ctx->found_key = 1;
1224 if (!quiet) {
dtucker@openbsd.orgd0723702017-03-06 00:44:51 +00001225 printf("# Host %s found: line %lu %s\n",
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001226 ctx->host,
1227 l->linenum, l->marker == MRK_CA ? "CA" :
1228 (l->marker == MRK_REVOKE ? "REVOKED" : ""));
1229 }
1230 if (hash_hosts)
1231 known_hosts_hash(l, ctx);
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001232 else if (print_fingerprint) {
1233 fp = sshkey_fingerprint(l->key, fptype, rep);
djm@openbsd.orga287c5a2017-02-10 03:36:40 +00001234 mprintf("%s %s %s %s\n", ctx->host,
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001235 sshkey_type(l->key), fp, l->comment);
1236 free(fp);
1237 } else
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001238 fprintf(ctx->out, "%s\n", l->line);
1239 return 0;
1240 }
1241 } else if (delete_host) {
1242 /* Retain non-matching hosts when deleting */
1243 if (l->status == HKF_STATUS_INVALID) {
1244 ctx->invalid = 1;
dtucker@openbsd.orgd0723702017-03-06 00:44:51 +00001245 logit("%s:%lu: invalid line", l->path, l->linenum);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001246 }
1247 fprintf(ctx->out, "%s\n", l->line);
1248 }
1249 return 0;
Damien Miller4b42d7f2005-03-01 21:48:35 +11001250}
1251
1252static void
1253do_known_hosts(struct passwd *pw, const char *name)
1254{
deraadt@openbsd.orgd2099de2015-01-19 00:32:54 +00001255 char *cp, tmp[PATH_MAX], old[PATH_MAX];
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001256 int r, fd, oerrno, inplace = 0;
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001257 struct known_hosts_ctx ctx;
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001258 u_int foreach_options;
Damien Miller4b42d7f2005-03-01 21:48:35 +11001259
1260 if (!have_identity) {
1261 cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
1262 if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
1263 sizeof(identity_file))
1264 fatal("Specified known hosts path too long");
Darren Tuckera627d422013-06-02 07:31:17 +10001265 free(cp);
Damien Miller4b42d7f2005-03-01 21:48:35 +11001266 have_identity = 1;
1267 }
Damien Miller4b42d7f2005-03-01 21:48:35 +11001268
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001269 memset(&ctx, 0, sizeof(ctx));
1270 ctx.out = stdout;
1271 ctx.host = name;
1272
Damien Miller4b42d7f2005-03-01 21:48:35 +11001273 /*
1274 * Find hosts goes to stdout, hash and deletions happen in-place
1275 * A corner case is ssh-keygen -HF foo, which should go to stdout
1276 */
1277 if (!find_host && (hash_hosts || delete_host)) {
1278 if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
1279 strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
1280 strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
1281 strlcat(old, ".old", sizeof(old)) >= sizeof(old))
1282 fatal("known_hosts path too long");
1283 umask(077);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001284 if ((fd = mkstemp(tmp)) == -1)
Damien Miller4b42d7f2005-03-01 21:48:35 +11001285 fatal("mkstemp: %s", strerror(errno));
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001286 if ((ctx.out = fdopen(fd, "w")) == NULL) {
1287 oerrno = errno;
Damien Miller4b42d7f2005-03-01 21:48:35 +11001288 unlink(tmp);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001289 fatal("fdopen: %s", strerror(oerrno));
Damien Miller4b42d7f2005-03-01 21:48:35 +11001290 }
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001291 inplace = 1;
Damien Miller4b42d7f2005-03-01 21:48:35 +11001292 }
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001293 /* XXX support identity_file == "-" for stdin */
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001294 foreach_options = find_host ? HKF_WANT_MATCH : 0;
1295 foreach_options |= print_fingerprint ? HKF_WANT_PARSE_KEY : 0;
djm@openbsd.org01b048c2018-06-01 04:21:29 +00001296 if ((r = hostkeys_foreach(identity_file, (find_host || !hash_hosts) ?
djm@openbsd.org3e088aa2018-06-01 03:51:34 +00001297 known_hosts_find_delete : known_hosts_hash, &ctx, name, NULL,
1298 foreach_options)) != 0) {
deraadt@openbsd.org6da413c2015-11-28 06:50:52 +00001299 if (inplace)
1300 unlink(tmp);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001301 fatal("%s: hostkeys_foreach failed: %s", __func__, ssh_err(r));
deraadt@openbsd.org6da413c2015-11-28 06:50:52 +00001302 }
Damien Miller4b42d7f2005-03-01 21:48:35 +11001303
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001304 if (inplace)
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001305 fclose(ctx.out);
Damien Miller0a80ca12010-02-27 07:55:05 +11001306
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001307 if (ctx.invalid) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001308 error("%s is not a valid known_hosts file.", identity_file);
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001309 if (inplace) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001310 error("Not replacing existing known_hosts "
1311 "file because of errors");
Damien Miller4b42d7f2005-03-01 21:48:35 +11001312 unlink(tmp);
1313 }
1314 exit(1);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001315 } else if (delete_host && !ctx.found_key) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001316 logit("Host %s not found in %s", name, identity_file);
djm@openbsd.orgc8376432015-08-19 23:17:51 +00001317 if (inplace)
1318 unlink(tmp);
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001319 } else if (inplace) {
Damien Miller4b42d7f2005-03-01 21:48:35 +11001320 /* Backup existing file */
1321 if (unlink(old) == -1 && errno != ENOENT)
1322 fatal("unlink %.100s: %s", old, strerror(errno));
1323 if (link(identity_file, old) == -1)
1324 fatal("link %.100s to %.100s: %s", identity_file, old,
1325 strerror(errno));
1326 /* Move new one into place */
1327 if (rename(tmp, identity_file) == -1) {
1328 error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
1329 strerror(errno));
1330 unlink(tmp);
1331 unlink(old);
1332 exit(1);
1333 }
1334
djm@openbsd.org3038a192015-04-17 13:19:22 +00001335 printf("%s updated.\n", identity_file);
1336 printf("Original contents retained as %s\n", old);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001337 if (ctx.has_unhashed) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001338 logit("WARNING: %s contains unhashed entries", old);
1339 logit("Delete this file to ensure privacy "
1340 "of hostnames");
Damien Miller4b42d7f2005-03-01 21:48:35 +11001341 }
1342 }
1343
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001344 exit (find_host && !ctx.found_key);
Damien Miller4b42d7f2005-03-01 21:48:35 +11001345}
1346
Damien Miller95def091999-11-25 00:26:21 +11001347/*
1348 * Perform changing a passphrase. The argument is the passwd structure
1349 * for the current user.
1350 */
Ben Lindstrombba81212001-06-25 05:01:22 +00001351static void
Damien Miller10f6f6b1999-11-17 17:29:08 +11001352do_change_passphrase(struct passwd *pw)
1353{
Damien Miller95def091999-11-25 00:26:21 +11001354 char *comment;
1355 char *old_passphrase, *passphrase1, *passphrase2;
1356 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001357 struct sshkey *private;
1358 int r;
Damien Miller10f6f6b1999-11-17 17:29:08 +11001359
Damien Miller95def091999-11-25 00:26:21 +11001360 if (!have_identity)
1361 ask_filename(pw, "Enter file in which the key is");
djm@openbsd.org3038a192015-04-17 13:19:22 +00001362 if (stat(identity_file, &st) < 0)
1363 fatal("%s: %s", identity_file, strerror(errno));
Damien Miller95def091999-11-25 00:26:21 +11001364 /* Try to load the file with empty passphrase. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001365 r = sshkey_load_private(identity_file, "", &private, &comment);
1366 if (r == SSH_ERR_KEY_WRONG_PASSPHRASE) {
Damien Miller95def091999-11-25 00:26:21 +11001367 if (identity_passphrase)
1368 old_passphrase = xstrdup(identity_passphrase);
1369 else
Ben Lindstrom949974b2001-06-25 05:20:31 +00001370 old_passphrase =
1371 read_passphrase("Enter old passphrase: ",
1372 RP_ALLOW_STDIN);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001373 r = sshkey_load_private(identity_file, old_passphrase,
1374 &private, &comment);
Damien Millera5103f42014-02-04 11:20:14 +11001375 explicit_bzero(old_passphrase, strlen(old_passphrase));
Darren Tuckera627d422013-06-02 07:31:17 +10001376 free(old_passphrase);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001377 if (r != 0)
1378 goto badkey;
1379 } else if (r != 0) {
1380 badkey:
djm@openbsd.org3038a192015-04-17 13:19:22 +00001381 fatal("Failed to load key %s: %s", identity_file, ssh_err(r));
Damien Miller95def091999-11-25 00:26:21 +11001382 }
djm@openbsd.orgf43d1722015-02-26 20:45:47 +00001383 if (comment)
djm@openbsd.orga287c5a2017-02-10 03:36:40 +00001384 mprintf("Key has comment '%s'\n", comment);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001385
Damien Miller95def091999-11-25 00:26:21 +11001386 /* Ask the new passphrase (twice). */
1387 if (identity_new_passphrase) {
1388 passphrase1 = xstrdup(identity_new_passphrase);
1389 passphrase2 = NULL;
1390 } else {
1391 passphrase1 =
Ben Lindstrom949974b2001-06-25 05:20:31 +00001392 read_passphrase("Enter new passphrase (empty for no "
1393 "passphrase): ", RP_ALLOW_STDIN);
1394 passphrase2 = read_passphrase("Enter same passphrase again: ",
Damien Miller9f0f5c62001-12-21 14:45:46 +11001395 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +11001396
1397 /* Verify that they are the same. */
1398 if (strcmp(passphrase1, passphrase2) != 0) {
Damien Millera5103f42014-02-04 11:20:14 +11001399 explicit_bzero(passphrase1, strlen(passphrase1));
1400 explicit_bzero(passphrase2, strlen(passphrase2));
Darren Tuckera627d422013-06-02 07:31:17 +10001401 free(passphrase1);
1402 free(passphrase2);
Damien Miller95def091999-11-25 00:26:21 +11001403 printf("Pass phrases do not match. Try again.\n");
1404 exit(1);
1405 }
1406 /* Destroy the other copy. */
Damien Millera5103f42014-02-04 11:20:14 +11001407 explicit_bzero(passphrase2, strlen(passphrase2));
Darren Tuckera627d422013-06-02 07:31:17 +10001408 free(passphrase2);
Damien Miller95def091999-11-25 00:26:21 +11001409 }
1410
1411 /* Save the file using the new passphrase. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001412 if ((r = sshkey_save_private(private, identity_file, passphrase1,
1413 comment, use_new_format, new_format_cipher, rounds)) != 0) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001414 error("Saving key \"%s\" failed: %s.",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001415 identity_file, ssh_err(r));
Damien Millera5103f42014-02-04 11:20:14 +11001416 explicit_bzero(passphrase1, strlen(passphrase1));
Darren Tuckera627d422013-06-02 07:31:17 +10001417 free(passphrase1);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001418 sshkey_free(private);
Darren Tuckera627d422013-06-02 07:31:17 +10001419 free(comment);
Damien Miller95def091999-11-25 00:26:21 +11001420 exit(1);
1421 }
1422 /* Destroy the passphrase and the copy of the key in memory. */
Damien Millera5103f42014-02-04 11:20:14 +11001423 explicit_bzero(passphrase1, strlen(passphrase1));
Darren Tuckera627d422013-06-02 07:31:17 +10001424 free(passphrase1);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001425 sshkey_free(private); /* Destroys contents */
Darren Tuckera627d422013-06-02 07:31:17 +10001426 free(comment);
Damien Miller95def091999-11-25 00:26:21 +11001427
1428 printf("Your identification has been saved with the new passphrase.\n");
1429 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001430}
1431
Damien Miller37876e92003-05-15 10:19:46 +10001432/*
1433 * Print the SSHFP RR.
1434 */
Damien Millercb314822006-03-26 13:48:01 +11001435static int
1436do_print_resource_record(struct passwd *pw, char *fname, char *hname)
Damien Miller37876e92003-05-15 10:19:46 +10001437{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001438 struct sshkey *public;
Damien Miller37876e92003-05-15 10:19:46 +10001439 char *comment = NULL;
1440 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001441 int r;
Damien Miller37876e92003-05-15 10:19:46 +10001442
Damien Millercb314822006-03-26 13:48:01 +11001443 if (fname == NULL)
Damien Miller5bb88332013-07-18 16:13:37 +10001444 fatal("%s: no filename", __func__);
Damien Millercb314822006-03-26 13:48:01 +11001445 if (stat(fname, &st) < 0) {
1446 if (errno == ENOENT)
1447 return 0;
djm@openbsd.org3038a192015-04-17 13:19:22 +00001448 fatal("%s: %s", fname, strerror(errno));
Damien Miller37876e92003-05-15 10:19:46 +10001449 }
djm@openbsd.org3038a192015-04-17 13:19:22 +00001450 if ((r = sshkey_load_public(fname, &public, &comment)) != 0)
1451 fatal("Failed to read v2 public key from \"%s\": %s.",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001452 fname, ssh_err(r));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001453 export_dns_rr(hname, public, stdout, print_generic);
1454 sshkey_free(public);
1455 free(comment);
1456 return 1;
Damien Miller37876e92003-05-15 10:19:46 +10001457}
Damien Miller37876e92003-05-15 10:19:46 +10001458
Damien Miller95def091999-11-25 00:26:21 +11001459/*
1460 * Change the comment of a private key file.
1461 */
Ben Lindstrombba81212001-06-25 05:01:22 +00001462static void
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001463do_change_comment(struct passwd *pw)
1464{
Ben Lindstrom5fc62702001-03-09 18:19:24 +00001465 char new_comment[1024], *comment, *passphrase;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001466 struct sshkey *private;
1467 struct sshkey *public;
Damien Miller95def091999-11-25 00:26:21 +11001468 struct stat st;
1469 FILE *f;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001470 int r, fd;
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001471
Damien Miller95def091999-11-25 00:26:21 +11001472 if (!have_identity)
1473 ask_filename(pw, "Enter file in which the key is");
djm@openbsd.org3038a192015-04-17 13:19:22 +00001474 if (stat(identity_file, &st) < 0)
1475 fatal("%s: %s", identity_file, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001476 if ((r = sshkey_load_private(identity_file, "",
1477 &private, &comment)) == 0)
1478 passphrase = xstrdup("");
djm@openbsd.org3038a192015-04-17 13:19:22 +00001479 else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
1480 fatal("Cannot load private key \"%s\": %s.",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001481 identity_file, ssh_err(r));
djm@openbsd.org3038a192015-04-17 13:19:22 +00001482 else {
Damien Miller95def091999-11-25 00:26:21 +11001483 if (identity_passphrase)
1484 passphrase = xstrdup(identity_passphrase);
1485 else if (identity_new_passphrase)
1486 passphrase = xstrdup(identity_new_passphrase);
1487 else
Ben Lindstrom949974b2001-06-25 05:20:31 +00001488 passphrase = read_passphrase("Enter passphrase: ",
1489 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +11001490 /* Try to load using the passphrase. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001491 if ((r = sshkey_load_private(identity_file, passphrase,
1492 &private, &comment)) != 0) {
Damien Millera5103f42014-02-04 11:20:14 +11001493 explicit_bzero(passphrase, strlen(passphrase));
Darren Tuckera627d422013-06-02 07:31:17 +10001494 free(passphrase);
djm@openbsd.org3038a192015-04-17 13:19:22 +00001495 fatal("Cannot load private key \"%s\": %s.",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001496 identity_file, ssh_err(r));
Damien Miller95def091999-11-25 00:26:21 +11001497 }
1498 }
halex@openbsd.org4d906252015-11-20 23:04:01 +00001499
markus@openbsd.org1b11ea72018-02-23 15:58:37 +00001500 if (private->type != KEY_ED25519 && private->type != KEY_XMSS &&
1501 !use_new_format) {
djm@openbsd.org873d3e72017-04-30 23:18:44 +00001502 error("Comments are only supported for keys stored in "
halex@openbsd.org4d906252015-11-20 23:04:01 +00001503 "the new format (-o).");
tobias@openbsd.org704d8c82015-03-31 11:06:49 +00001504 explicit_bzero(passphrase, strlen(passphrase));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001505 sshkey_free(private);
Ben Lindstromd0fca422001-03-26 13:44:06 +00001506 exit(1);
Damien Miller9f0f5c62001-12-21 14:45:46 +11001507 }
millert@openbsd.orge40269b2017-02-08 20:32:43 +00001508 if (comment)
1509 printf("Key now has comment '%s'\n", comment);
1510 else
1511 printf("Key now has no comment\n");
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001512
Damien Miller95def091999-11-25 00:26:21 +11001513 if (identity_comment) {
1514 strlcpy(new_comment, identity_comment, sizeof(new_comment));
1515 } else {
1516 printf("Enter new comment: ");
1517 fflush(stdout);
1518 if (!fgets(new_comment, sizeof(new_comment), stdin)) {
Damien Millera5103f42014-02-04 11:20:14 +11001519 explicit_bzero(passphrase, strlen(passphrase));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001520 sshkey_free(private);
Damien Miller95def091999-11-25 00:26:21 +11001521 exit(1);
1522 }
Damien Miller14b017d2007-09-17 16:09:15 +10001523 new_comment[strcspn(new_comment, "\n")] = '\0';
Damien Miller95def091999-11-25 00:26:21 +11001524 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001525
Damien Miller95def091999-11-25 00:26:21 +11001526 /* Save the file using the new passphrase. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001527 if ((r = sshkey_save_private(private, identity_file, passphrase,
1528 new_comment, use_new_format, new_format_cipher, rounds)) != 0) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001529 error("Saving key \"%s\" failed: %s",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001530 identity_file, ssh_err(r));
Damien Millera5103f42014-02-04 11:20:14 +11001531 explicit_bzero(passphrase, strlen(passphrase));
Darren Tuckera627d422013-06-02 07:31:17 +10001532 free(passphrase);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001533 sshkey_free(private);
Darren Tuckera627d422013-06-02 07:31:17 +10001534 free(comment);
Damien Miller95def091999-11-25 00:26:21 +11001535 exit(1);
1536 }
Damien Millera5103f42014-02-04 11:20:14 +11001537 explicit_bzero(passphrase, strlen(passphrase));
Darren Tuckera627d422013-06-02 07:31:17 +10001538 free(passphrase);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001539 if ((r = sshkey_from_private(private, &public)) != 0)
markus@openbsd.org7da5df12017-05-30 14:16:41 +00001540 fatal("sshkey_from_private failed: %s", ssh_err(r));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001541 sshkey_free(private);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001542
Damien Miller95def091999-11-25 00:26:21 +11001543 strlcat(identity_file, ".pub", sizeof(identity_file));
Ben Lindstrom5fc62702001-03-09 18:19:24 +00001544 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
djm@openbsd.org3038a192015-04-17 13:19:22 +00001545 if (fd == -1)
1546 fatal("Could not save your public key in %s", identity_file);
Ben Lindstrom5fc62702001-03-09 18:19:24 +00001547 f = fdopen(fd, "w");
djm@openbsd.org3038a192015-04-17 13:19:22 +00001548 if (f == NULL)
1549 fatal("fdopen %s failed: %s", identity_file, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001550 if ((r = sshkey_write(public, f)) != 0)
djm@openbsd.org3038a192015-04-17 13:19:22 +00001551 fatal("write key failed: %s", ssh_err(r));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001552 sshkey_free(public);
Damien Millereba71ba2000-04-29 23:57:08 +10001553 fprintf(f, " %s\n", new_comment);
Damien Miller95def091999-11-25 00:26:21 +11001554 fclose(f);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001555
Darren Tuckera627d422013-06-02 07:31:17 +10001556 free(comment);
Damien Miller95def091999-11-25 00:26:21 +11001557
1558 printf("The comment in your key file has been changed.\n");
1559 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001560}
1561
Damien Miller0a80ca12010-02-27 07:55:05 +11001562static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001563add_flag_option(struct sshbuf *c, const char *name)
Damien Miller0a80ca12010-02-27 07:55:05 +11001564{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001565 int r;
1566
Damien Miller0a80ca12010-02-27 07:55:05 +11001567 debug3("%s: %s", __func__, name);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001568 if ((r = sshbuf_put_cstring(c, name)) != 0 ||
1569 (r = sshbuf_put_string(c, NULL, 0)) != 0)
1570 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Miller0a80ca12010-02-27 07:55:05 +11001571}
1572
1573static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001574add_string_option(struct sshbuf *c, const char *name, const char *value)
Damien Miller0a80ca12010-02-27 07:55:05 +11001575{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001576 struct sshbuf *b;
1577 int r;
Damien Miller0a80ca12010-02-27 07:55:05 +11001578
1579 debug3("%s: %s=%s", __func__, name, value);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001580 if ((b = sshbuf_new()) == NULL)
1581 fatal("%s: sshbuf_new failed", __func__);
1582 if ((r = sshbuf_put_cstring(b, value)) != 0 ||
1583 (r = sshbuf_put_cstring(c, name)) != 0 ||
1584 (r = sshbuf_put_stringb(c, b)) != 0)
1585 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Miller0a80ca12010-02-27 07:55:05 +11001586
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001587 sshbuf_free(b);
Damien Miller0a80ca12010-02-27 07:55:05 +11001588}
1589
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001590#define OPTIONS_CRITICAL 1
1591#define OPTIONS_EXTENSIONS 2
Damien Miller0a80ca12010-02-27 07:55:05 +11001592static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001593prepare_options_buf(struct sshbuf *c, int which)
Damien Miller0a80ca12010-02-27 07:55:05 +11001594{
djm@openbsd.org249516e2017-04-29 04:12:25 +00001595 size_t i;
1596
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001597 sshbuf_reset(c);
Damien Miller1da63882010-08-05 13:03:51 +10001598 if ((which & OPTIONS_CRITICAL) != 0 &&
1599 certflags_command != NULL)
1600 add_string_option(c, "force-command", certflags_command);
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001601 if ((which & OPTIONS_EXTENSIONS) != 0 &&
Damien Miller2ce12ef2011-05-05 14:17:18 +10001602 (certflags_flags & CERTOPT_X_FWD) != 0)
1603 add_flag_option(c, "permit-X11-forwarding");
1604 if ((which & OPTIONS_EXTENSIONS) != 0 &&
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001605 (certflags_flags & CERTOPT_AGENT_FWD) != 0)
Damien Miller4e270b02010-04-16 15:56:21 +10001606 add_flag_option(c, "permit-agent-forwarding");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001607 if ((which & OPTIONS_EXTENSIONS) != 0 &&
1608 (certflags_flags & CERTOPT_PORT_FWD) != 0)
Damien Miller4e270b02010-04-16 15:56:21 +10001609 add_flag_option(c, "permit-port-forwarding");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001610 if ((which & OPTIONS_EXTENSIONS) != 0 &&
1611 (certflags_flags & CERTOPT_PTY) != 0)
Damien Miller4e270b02010-04-16 15:56:21 +10001612 add_flag_option(c, "permit-pty");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001613 if ((which & OPTIONS_EXTENSIONS) != 0 &&
1614 (certflags_flags & CERTOPT_USER_RC) != 0)
Damien Miller4e270b02010-04-16 15:56:21 +10001615 add_flag_option(c, "permit-user-rc");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001616 if ((which & OPTIONS_CRITICAL) != 0 &&
1617 certflags_src_addr != NULL)
1618 add_string_option(c, "source-address", certflags_src_addr);
djm@openbsd.org249516e2017-04-29 04:12:25 +00001619 for (i = 0; i < ncert_userext; i++) {
1620 if ((cert_userext[i].crit && (which & OPTIONS_EXTENSIONS)) ||
1621 (!cert_userext[i].crit && (which & OPTIONS_CRITICAL)))
1622 continue;
1623 if (cert_userext[i].val == NULL)
1624 add_flag_option(c, cert_userext[i].key);
1625 else {
1626 add_string_option(c, cert_userext[i].key,
1627 cert_userext[i].val);
1628 }
1629 }
Damien Miller0a80ca12010-02-27 07:55:05 +11001630}
1631
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001632static struct sshkey *
Damien Miller757f34e2010-08-05 13:05:31 +10001633load_pkcs11_key(char *path)
1634{
1635#ifdef ENABLE_PKCS11
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001636 struct sshkey **keys = NULL, *public, *private = NULL;
1637 int r, i, nkeys;
Damien Miller757f34e2010-08-05 13:05:31 +10001638
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001639 if ((r = sshkey_load_public(path, &public, NULL)) != 0)
1640 fatal("Couldn't load CA public key \"%s\": %s",
1641 path, ssh_err(r));
Damien Miller757f34e2010-08-05 13:05:31 +10001642
1643 nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, &keys);
1644 debug3("%s: %d keys", __func__, nkeys);
1645 if (nkeys <= 0)
1646 fatal("cannot read public key from pkcs11");
1647 for (i = 0; i < nkeys; i++) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001648 if (sshkey_equal_public(public, keys[i])) {
Damien Miller757f34e2010-08-05 13:05:31 +10001649 private = keys[i];
1650 continue;
1651 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001652 sshkey_free(keys[i]);
Damien Miller757f34e2010-08-05 13:05:31 +10001653 }
Darren Tuckera627d422013-06-02 07:31:17 +10001654 free(keys);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001655 sshkey_free(public);
Damien Miller757f34e2010-08-05 13:05:31 +10001656 return private;
1657#else
1658 fatal("no pkcs11 support");
1659#endif /* ENABLE_PKCS11 */
1660}
1661
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001662/* Signer for sshkey_certify_custom that uses the agent */
1663static int
1664agent_signer(const struct sshkey *key, u_char **sigp, size_t *lenp,
1665 const u_char *data, size_t datalen,
1666 const char *alg, u_int compat, void *ctx)
1667{
1668 int *agent_fdp = (int *)ctx;
1669
1670 return ssh_agent_sign(*agent_fdp, key, sigp, lenp,
1671 data, datalen, alg, compat);
1672}
1673
Damien Miller0a80ca12010-02-27 07:55:05 +11001674static void
1675do_ca_sign(struct passwd *pw, int argc, char **argv)
1676{
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001677 int r, i, fd, found, agent_fd = -1;
Damien Miller0a80ca12010-02-27 07:55:05 +11001678 u_int n;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001679 struct sshkey *ca, *public;
djm@openbsd.org499cf362015-11-19 01:08:55 +00001680 char valid[64], *otmp, *tmp, *cp, *out, *comment, **plist = NULL;
Damien Miller0a80ca12010-02-27 07:55:05 +11001681 FILE *f;
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001682 struct ssh_identitylist *agent_ids;
1683 size_t j;
Damien Miller4e270b02010-04-16 15:56:21 +10001684
Damien Miller1f0311c2014-05-15 14:24:09 +10001685#ifdef ENABLE_PKCS11
Damien Miller757f34e2010-08-05 13:05:31 +10001686 pkcs11_init(1);
Damien Miller1f0311c2014-05-15 14:24:09 +10001687#endif
Damien Miller757f34e2010-08-05 13:05:31 +10001688 tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
1689 if (pkcs11provider != NULL) {
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001690 /* If a PKCS#11 token was specified then try to use it */
Damien Miller757f34e2010-08-05 13:05:31 +10001691 if ((ca = load_pkcs11_key(tmp)) == NULL)
1692 fatal("No PKCS#11 key matching %s found", ca_key_path);
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001693 } else if (prefer_agent) {
1694 /*
1695 * Agent signature requested. Try to use agent after making
1696 * sure the public key specified is actually present in the
1697 * agent.
1698 */
1699 if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)
1700 fatal("Cannot load CA public key %s: %s",
1701 tmp, ssh_err(r));
1702 if ((r = ssh_get_authentication_socket(&agent_fd)) != 0)
1703 fatal("Cannot use public key for CA signature: %s",
1704 ssh_err(r));
1705 if ((r = ssh_fetch_identitylist(agent_fd, &agent_ids)) != 0)
1706 fatal("Retrieve agent key list: %s", ssh_err(r));
1707 found = 0;
1708 for (j = 0; j < agent_ids->nkeys; j++) {
1709 if (sshkey_equal(ca, agent_ids->keys[j])) {
1710 found = 1;
1711 break;
1712 }
1713 }
1714 if (!found)
1715 fatal("CA key %s not found in agent", tmp);
1716 ssh_free_identitylist(agent_ids);
1717 ca->flags |= SSHKEY_FLAG_EXT;
1718 } else {
1719 /* CA key is assumed to be a private key on the filesystem */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001720 ca = load_identity(tmp);
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001721 }
Darren Tuckera627d422013-06-02 07:31:17 +10001722 free(tmp);
Damien Miller757f34e2010-08-05 13:05:31 +10001723
djm@openbsd.org57464e32016-05-02 09:36:42 +00001724 if (key_type_name != NULL &&
1725 sshkey_type_from_name(key_type_name) != ca->type) {
1726 fatal("CA key type %s doesn't match specified %s",
1727 sshkey_ssh_name(ca), key_type_name);
1728 }
1729
Damien Miller0a80ca12010-02-27 07:55:05 +11001730 for (i = 0; i < argc; i++) {
1731 /* Split list of principals */
1732 n = 0;
1733 if (cert_principals != NULL) {
1734 otmp = tmp = xstrdup(cert_principals);
1735 plist = NULL;
1736 for (; (cp = strsep(&tmp, ",")) != NULL; n++) {
deraadt@openbsd.org657a5fb2015-04-24 01:36:00 +00001737 plist = xreallocarray(plist, n + 1, sizeof(*plist));
Damien Miller0a80ca12010-02-27 07:55:05 +11001738 if (*(plist[n] = xstrdup(cp)) == '\0')
1739 fatal("Empty principal name");
1740 }
Darren Tuckera627d422013-06-02 07:31:17 +10001741 free(otmp);
Damien Miller0a80ca12010-02-27 07:55:05 +11001742 }
djm@openbsd.orgca613242018-02-10 05:48:46 +00001743 if (n > SSHKEY_CERT_MAX_PRINCIPALS)
1744 fatal("Too many certificate principals specified");
Damien Miller0a80ca12010-02-27 07:55:05 +11001745
1746 tmp = tilde_expand_filename(argv[i], pw->pw_uid);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001747 if ((r = sshkey_load_public(tmp, &public, &comment)) != 0)
1748 fatal("%s: unable to open \"%s\": %s",
1749 __func__, tmp, ssh_err(r));
Damien Millereb8b60e2010-08-31 22:41:14 +10001750 if (public->type != KEY_RSA && public->type != KEY_DSA &&
markus@openbsd.org1b11ea72018-02-23 15:58:37 +00001751 public->type != KEY_ECDSA && public->type != KEY_ED25519 &&
1752 public->type != KEY_XMSS)
Damien Miller0a80ca12010-02-27 07:55:05 +11001753 fatal("%s: key \"%s\" type %s cannot be certified",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001754 __func__, tmp, sshkey_type(public));
Damien Miller0a80ca12010-02-27 07:55:05 +11001755
1756 /* Prepare certificate to sign */
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00001757 if ((r = sshkey_to_certified(public)) != 0)
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001758 fatal("Could not upgrade key %s to certificate: %s",
1759 tmp, ssh_err(r));
Damien Miller0a80ca12010-02-27 07:55:05 +11001760 public->cert->type = cert_key_type;
Damien Miller4e270b02010-04-16 15:56:21 +10001761 public->cert->serial = (u_int64_t)cert_serial;
Damien Miller0a80ca12010-02-27 07:55:05 +11001762 public->cert->key_id = xstrdup(cert_key_id);
1763 public->cert->nprincipals = n;
1764 public->cert->principals = plist;
1765 public->cert->valid_after = cert_valid_from;
1766 public->cert->valid_before = cert_valid_to;
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00001767 prepare_options_buf(public->cert->critical, OPTIONS_CRITICAL);
1768 prepare_options_buf(public->cert->extensions,
1769 OPTIONS_EXTENSIONS);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001770 if ((r = sshkey_from_private(ca,
1771 &public->cert->signature_key)) != 0)
markus@openbsd.org7da5df12017-05-30 14:16:41 +00001772 fatal("sshkey_from_private (ca key): %s", ssh_err(r));
Damien Miller0a80ca12010-02-27 07:55:05 +11001773
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001774 if (agent_fd != -1 && (ca->flags & SSHKEY_FLAG_EXT) != 0) {
1775 if ((r = sshkey_certify_custom(public, ca,
1776 key_type_name, agent_signer, &agent_fd)) != 0)
1777 fatal("Couldn't certify key %s via agent: %s",
1778 tmp, ssh_err(r));
1779 } else {
1780 if ((sshkey_certify(public, ca, key_type_name)) != 0)
1781 fatal("Couldn't certify key %s: %s",
1782 tmp, ssh_err(r));
1783 }
Damien Miller0a80ca12010-02-27 07:55:05 +11001784
1785 if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0)
1786 *cp = '\0';
1787 xasprintf(&out, "%s-cert.pub", tmp);
Darren Tuckera627d422013-06-02 07:31:17 +10001788 free(tmp);
Damien Miller0a80ca12010-02-27 07:55:05 +11001789
1790 if ((fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
1791 fatal("Could not open \"%s\" for writing: %s", out,
1792 strerror(errno));
1793 if ((f = fdopen(fd, "w")) == NULL)
1794 fatal("%s: fdopen: %s", __func__, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001795 if ((r = sshkey_write(public, f)) != 0)
1796 fatal("Could not write certified key to %s: %s",
1797 out, ssh_err(r));
Damien Miller0a80ca12010-02-27 07:55:05 +11001798 fprintf(f, " %s\n", comment);
1799 fclose(f);
1800
Damien Miller4e270b02010-04-16 15:56:21 +10001801 if (!quiet) {
djm@openbsd.org964ab3e2015-11-19 01:12:32 +00001802 sshkey_format_cert_validity(public->cert,
djm@openbsd.org499cf362015-11-19 01:08:55 +00001803 valid, sizeof(valid));
Damien Miller4e270b02010-04-16 15:56:21 +10001804 logit("Signed %s key %s: id \"%s\" serial %llu%s%s "
djm@openbsd.org964ab3e2015-11-19 01:12:32 +00001805 "valid %s", sshkey_cert_type(public),
Damien Miller821de0a2011-01-11 17:20:29 +11001806 out, public->cert->key_id,
1807 (unsigned long long)public->cert->serial,
Damien Miller0a80ca12010-02-27 07:55:05 +11001808 cert_principals != NULL ? " for " : "",
1809 cert_principals != NULL ? cert_principals : "",
djm@openbsd.org499cf362015-11-19 01:08:55 +00001810 valid);
Damien Miller4e270b02010-04-16 15:56:21 +10001811 }
Damien Miller0a80ca12010-02-27 07:55:05 +11001812
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001813 sshkey_free(public);
Darren Tuckera627d422013-06-02 07:31:17 +10001814 free(out);
Damien Miller0a80ca12010-02-27 07:55:05 +11001815 }
Damien Miller1f0311c2014-05-15 14:24:09 +10001816#ifdef ENABLE_PKCS11
Damien Miller757f34e2010-08-05 13:05:31 +10001817 pkcs11_terminate();
Damien Miller1f0311c2014-05-15 14:24:09 +10001818#endif
Damien Miller0a80ca12010-02-27 07:55:05 +11001819 exit(0);
1820}
1821
1822static u_int64_t
1823parse_relative_time(const char *s, time_t now)
1824{
1825 int64_t mul, secs;
1826
1827 mul = *s == '-' ? -1 : 1;
1828
1829 if ((secs = convtime(s + 1)) == -1)
1830 fatal("Invalid relative certificate time %s", s);
1831 if (mul == -1 && secs > now)
1832 fatal("Certificate time %s cannot be represented", s);
1833 return now + (u_int64_t)(secs * mul);
1834}
1835
Damien Miller0a80ca12010-02-27 07:55:05 +11001836static void
1837parse_cert_times(char *timespec)
1838{
1839 char *from, *to;
1840 time_t now = time(NULL);
1841 int64_t secs;
1842
1843 /* +timespec relative to now */
1844 if (*timespec == '+' && strchr(timespec, ':') == NULL) {
1845 if ((secs = convtime(timespec + 1)) == -1)
1846 fatal("Invalid relative certificate life %s", timespec);
1847 cert_valid_to = now + secs;
1848 /*
1849 * Backdate certificate one minute to avoid problems on hosts
1850 * with poorly-synchronised clocks.
1851 */
1852 cert_valid_from = ((now - 59)/ 60) * 60;
1853 return;
1854 }
1855
1856 /*
1857 * from:to, where
djm@openbsd.org@openbsd.orgd52131a2017-11-03 05:14:04 +00001858 * from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "always"
1859 * to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "forever"
Damien Miller0a80ca12010-02-27 07:55:05 +11001860 */
1861 from = xstrdup(timespec);
1862 to = strchr(from, ':');
1863 if (to == NULL || from == to || *(to + 1) == '\0')
Damien Miller910f2092010-03-04 14:17:22 +11001864 fatal("Invalid certificate life specification %s", timespec);
Damien Miller0a80ca12010-02-27 07:55:05 +11001865 *to++ = '\0';
1866
1867 if (*from == '-' || *from == '+')
1868 cert_valid_from = parse_relative_time(from, now);
djm@openbsd.org@openbsd.orgd52131a2017-11-03 05:14:04 +00001869 else if (strcmp(from, "always") == 0)
1870 cert_valid_from = 0;
djm@openbsd.orgbf0fbf22018-03-12 00:52:01 +00001871 else if (parse_absolute_time(from, &cert_valid_from) != 0)
1872 fatal("Invalid from time \"%s\"", from);
Damien Miller0a80ca12010-02-27 07:55:05 +11001873
1874 if (*to == '-' || *to == '+')
Damien Miller5b01b0d2013-10-23 16:31:31 +11001875 cert_valid_to = parse_relative_time(to, now);
djm@openbsd.org@openbsd.orgd52131a2017-11-03 05:14:04 +00001876 else if (strcmp(to, "forever") == 0)
1877 cert_valid_to = ~(u_int64_t)0;
djm@openbsd.orgbf0fbf22018-03-12 00:52:01 +00001878 else if (parse_absolute_time(to, &cert_valid_to) != 0)
1879 fatal("Invalid to time \"%s\"", to);
Damien Miller0a80ca12010-02-27 07:55:05 +11001880
1881 if (cert_valid_to <= cert_valid_from)
1882 fatal("Empty certificate validity interval");
Darren Tuckera627d422013-06-02 07:31:17 +10001883 free(from);
Damien Miller0a80ca12010-02-27 07:55:05 +11001884}
1885
1886static void
Damien Miller4e270b02010-04-16 15:56:21 +10001887add_cert_option(char *opt)
Damien Miller0a80ca12010-02-27 07:55:05 +11001888{
djm@openbsd.org249516e2017-04-29 04:12:25 +00001889 char *val, *cp;
1890 int iscrit = 0;
Damien Miller0a80ca12010-02-27 07:55:05 +11001891
Damien Miller044f4a62011-05-05 14:14:08 +10001892 if (strcasecmp(opt, "clear") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001893 certflags_flags = 0;
Damien Miller0a80ca12010-02-27 07:55:05 +11001894 else if (strcasecmp(opt, "no-x11-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001895 certflags_flags &= ~CERTOPT_X_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001896 else if (strcasecmp(opt, "permit-x11-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001897 certflags_flags |= CERTOPT_X_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001898 else if (strcasecmp(opt, "no-agent-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001899 certflags_flags &= ~CERTOPT_AGENT_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001900 else if (strcasecmp(opt, "permit-agent-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001901 certflags_flags |= CERTOPT_AGENT_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001902 else if (strcasecmp(opt, "no-port-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001903 certflags_flags &= ~CERTOPT_PORT_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001904 else if (strcasecmp(opt, "permit-port-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001905 certflags_flags |= CERTOPT_PORT_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001906 else if (strcasecmp(opt, "no-pty") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001907 certflags_flags &= ~CERTOPT_PTY;
Damien Miller0a80ca12010-02-27 07:55:05 +11001908 else if (strcasecmp(opt, "permit-pty") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001909 certflags_flags |= CERTOPT_PTY;
Damien Miller0a80ca12010-02-27 07:55:05 +11001910 else if (strcasecmp(opt, "no-user-rc") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001911 certflags_flags &= ~CERTOPT_USER_RC;
Damien Miller0a80ca12010-02-27 07:55:05 +11001912 else if (strcasecmp(opt, "permit-user-rc") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001913 certflags_flags |= CERTOPT_USER_RC;
Damien Miller0a80ca12010-02-27 07:55:05 +11001914 else if (strncasecmp(opt, "force-command=", 14) == 0) {
1915 val = opt + 14;
1916 if (*val == '\0')
Damien Miller4e270b02010-04-16 15:56:21 +10001917 fatal("Empty force-command option");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001918 if (certflags_command != NULL)
Damien Miller0a80ca12010-02-27 07:55:05 +11001919 fatal("force-command already specified");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001920 certflags_command = xstrdup(val);
Damien Miller0a80ca12010-02-27 07:55:05 +11001921 } else if (strncasecmp(opt, "source-address=", 15) == 0) {
1922 val = opt + 15;
1923 if (*val == '\0')
Damien Miller4e270b02010-04-16 15:56:21 +10001924 fatal("Empty source-address option");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001925 if (certflags_src_addr != NULL)
Damien Miller0a80ca12010-02-27 07:55:05 +11001926 fatal("source-address already specified");
1927 if (addr_match_cidr_list(NULL, val) != 0)
1928 fatal("Invalid source-address list");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001929 certflags_src_addr = xstrdup(val);
djm@openbsd.org249516e2017-04-29 04:12:25 +00001930 } else if (strncasecmp(opt, "extension:", 10) == 0 ||
1931 (iscrit = (strncasecmp(opt, "critical:", 9) == 0))) {
1932 val = xstrdup(strchr(opt, ':') + 1);
1933 if ((cp = strchr(val, '=')) != NULL)
1934 *cp++ = '\0';
1935 cert_userext = xreallocarray(cert_userext, ncert_userext + 1,
1936 sizeof(*cert_userext));
1937 cert_userext[ncert_userext].key = val;
1938 cert_userext[ncert_userext].val = cp == NULL ?
1939 NULL : xstrdup(cp);
1940 cert_userext[ncert_userext].crit = iscrit;
1941 ncert_userext++;
Damien Miller0a80ca12010-02-27 07:55:05 +11001942 } else
Damien Miller4e270b02010-04-16 15:56:21 +10001943 fatal("Unsupported certificate option \"%s\"", opt);
Damien Miller0a80ca12010-02-27 07:55:05 +11001944}
1945
Ben Lindstrombba81212001-06-25 05:01:22 +00001946static void
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00001947show_options(struct sshbuf *optbuf, int in_critical)
Damien Millerd834d352010-06-26 09:48:02 +10001948{
Damien Miller633de332014-05-15 13:48:26 +10001949 char *name, *arg;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001950 struct sshbuf *options, *option = NULL;
1951 int r;
Damien Millerd834d352010-06-26 09:48:02 +10001952
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001953 if ((options = sshbuf_fromb(optbuf)) == NULL)
1954 fatal("%s: sshbuf_fromb failed", __func__);
1955 while (sshbuf_len(options) != 0) {
1956 sshbuf_free(option);
1957 option = NULL;
1958 if ((r = sshbuf_get_cstring(options, &name, NULL)) != 0 ||
1959 (r = sshbuf_froms(options, &option)) != 0)
1960 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Millerd834d352010-06-26 09:48:02 +10001961 printf(" %s", name);
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00001962 if (!in_critical &&
Damien Millerd834d352010-06-26 09:48:02 +10001963 (strcmp(name, "permit-X11-forwarding") == 0 ||
1964 strcmp(name, "permit-agent-forwarding") == 0 ||
1965 strcmp(name, "permit-port-forwarding") == 0 ||
1966 strcmp(name, "permit-pty") == 0 ||
1967 strcmp(name, "permit-user-rc") == 0))
1968 printf("\n");
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00001969 else if (in_critical &&
Damien Millerd834d352010-06-26 09:48:02 +10001970 (strcmp(name, "force-command") == 0 ||
1971 strcmp(name, "source-address") == 0)) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001972 if ((r = sshbuf_get_cstring(option, &arg, NULL)) != 0)
1973 fatal("%s: buffer error: %s",
1974 __func__, ssh_err(r));
Damien Miller633de332014-05-15 13:48:26 +10001975 printf(" %s\n", arg);
1976 free(arg);
Damien Millerd834d352010-06-26 09:48:02 +10001977 } else {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001978 printf(" UNKNOWN OPTION (len %zu)\n",
1979 sshbuf_len(option));
1980 sshbuf_reset(option);
Damien Millerd834d352010-06-26 09:48:02 +10001981 }
Darren Tuckera627d422013-06-02 07:31:17 +10001982 free(name);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001983 if (sshbuf_len(option) != 0)
Damien Millerd834d352010-06-26 09:48:02 +10001984 fatal("Option corrupt: extra data at end");
1985 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001986 sshbuf_free(option);
1987 sshbuf_free(options);
Damien Millerd834d352010-06-26 09:48:02 +10001988}
1989
1990static void
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00001991print_cert(struct sshkey *key)
Damien Millerf2b70ca2010-03-05 07:39:35 +11001992{
djm@openbsd.org499cf362015-11-19 01:08:55 +00001993 char valid[64], *key_fp, *ca_fp;
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00001994 u_int i;
Damien Miller4e270b02010-04-16 15:56:21 +10001995
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001996 key_fp = sshkey_fingerprint(key, fingerprint_hash, SSH_FP_DEFAULT);
1997 ca_fp = sshkey_fingerprint(key->cert->signature_key,
djm@openbsd.org56d1c832014-12-21 22:27:55 +00001998 fingerprint_hash, SSH_FP_DEFAULT);
djm@openbsd.org9ce86c92015-01-28 22:36:00 +00001999 if (key_fp == NULL || ca_fp == NULL)
2000 fatal("%s: sshkey_fingerprint fail", __func__);
djm@openbsd.org499cf362015-11-19 01:08:55 +00002001 sshkey_format_cert_validity(key->cert, valid, sizeof(valid));
Damien Millerf2b70ca2010-03-05 07:39:35 +11002002
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002003 printf(" Type: %s %s certificate\n", sshkey_ssh_name(key),
2004 sshkey_cert_type(key));
2005 printf(" Public key: %s %s\n", sshkey_type(key), key_fp);
djm@openbsd.orga4fc2532018-10-19 03:12:42 +00002006 printf(" Signing CA: %s %s (using %s)\n",
2007 sshkey_type(key->cert->signature_key), ca_fp,
2008 key->cert->signature_type);
Damien Miller4e270b02010-04-16 15:56:21 +10002009 printf(" Key ID: \"%s\"\n", key->cert->key_id);
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00002010 printf(" Serial: %llu\n", (unsigned long long)key->cert->serial);
djm@openbsd.org499cf362015-11-19 01:08:55 +00002011 printf(" Valid: %s\n", valid);
Damien Millerf2b70ca2010-03-05 07:39:35 +11002012 printf(" Principals: ");
2013 if (key->cert->nprincipals == 0)
2014 printf("(none)\n");
2015 else {
2016 for (i = 0; i < key->cert->nprincipals; i++)
2017 printf("\n %s",
2018 key->cert->principals[i]);
2019 printf("\n");
2020 }
Damien Miller4e270b02010-04-16 15:56:21 +10002021 printf(" Critical Options: ");
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002022 if (sshbuf_len(key->cert->critical) == 0)
Damien Millerf2b70ca2010-03-05 07:39:35 +11002023 printf("(none)\n");
2024 else {
2025 printf("\n");
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00002026 show_options(key->cert->critical, 1);
Damien Millerf2b70ca2010-03-05 07:39:35 +11002027 }
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00002028 printf(" Extensions: ");
2029 if (sshbuf_len(key->cert->extensions) == 0)
2030 printf("(none)\n");
2031 else {
2032 printf("\n");
2033 show_options(key->cert->extensions, 0);
Damien Miller4e270b02010-04-16 15:56:21 +10002034 }
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002035}
2036
2037static void
2038do_show_cert(struct passwd *pw)
2039{
2040 struct sshkey *key = NULL;
2041 struct stat st;
2042 int r, is_stdin = 0, ok = 0;
2043 FILE *f;
markus@openbsd.org7f906352018-06-06 18:29:18 +00002044 char *cp, *line = NULL;
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002045 const char *path;
markus@openbsd.org7f906352018-06-06 18:29:18 +00002046 size_t linesize = 0;
djm@openbsd.org1a31d022016-05-02 08:49:03 +00002047 u_long lnum = 0;
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002048
2049 if (!have_identity)
2050 ask_filename(pw, "Enter file in which the key is");
2051 if (strcmp(identity_file, "-") != 0 && stat(identity_file, &st) < 0)
2052 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
2053
2054 path = identity_file;
2055 if (strcmp(path, "-") == 0) {
2056 f = stdin;
2057 path = "(stdin)";
2058 is_stdin = 1;
2059 } else if ((f = fopen(identity_file, "r")) == NULL)
2060 fatal("fopen %s: %s", identity_file, strerror(errno));
2061
markus@openbsd.org7f906352018-06-06 18:29:18 +00002062 while (getline(&line, &linesize, f) != -1) {
2063 lnum++;
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002064 sshkey_free(key);
2065 key = NULL;
2066 /* Trim leading space and comments */
2067 cp = line + strspn(line, " \t");
2068 if (*cp == '#' || *cp == '\0')
2069 continue;
2070 if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
markus@openbsd.org7da5df12017-05-30 14:16:41 +00002071 fatal("sshkey_new");
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002072 if ((r = sshkey_read(key, &cp)) != 0) {
2073 error("%s:%lu: invalid key: %s", path,
2074 lnum, ssh_err(r));
2075 continue;
2076 }
2077 if (!sshkey_is_cert(key)) {
2078 error("%s:%lu is not a certificate", path, lnum);
2079 continue;
2080 }
2081 ok = 1;
2082 if (!is_stdin && lnum == 1)
2083 printf("%s:\n", path);
2084 else
2085 printf("%s:%lu:\n", path, lnum);
2086 print_cert(key);
2087 }
markus@openbsd.org7f906352018-06-06 18:29:18 +00002088 free(line);
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002089 sshkey_free(key);
2090 fclose(f);
2091 exit(ok ? 0 : 1);
Damien Millerf2b70ca2010-03-05 07:39:35 +11002092}
2093
2094static void
Damien Millerf3747bf2013-01-18 11:44:04 +11002095load_krl(const char *path, struct ssh_krl **krlp)
2096{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002097 struct sshbuf *krlbuf;
2098 int r, fd;
Damien Millerf3747bf2013-01-18 11:44:04 +11002099
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002100 if ((krlbuf = sshbuf_new()) == NULL)
2101 fatal("sshbuf_new failed");
Damien Millerf3747bf2013-01-18 11:44:04 +11002102 if ((fd = open(path, O_RDONLY)) == -1)
2103 fatal("open %s: %s", path, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002104 if ((r = sshkey_load_file(fd, krlbuf)) != 0)
2105 fatal("Unable to load KRL: %s", ssh_err(r));
Damien Millerf3747bf2013-01-18 11:44:04 +11002106 close(fd);
2107 /* XXX check sigs */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002108 if ((r = ssh_krl_from_blob(krlbuf, krlp, NULL, 0)) != 0 ||
Damien Millerf3747bf2013-01-18 11:44:04 +11002109 *krlp == NULL)
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002110 fatal("Invalid KRL file: %s", ssh_err(r));
2111 sshbuf_free(krlbuf);
Damien Millerf3747bf2013-01-18 11:44:04 +11002112}
2113
2114static void
djm@openbsd.org9405c622018-09-12 01:21:34 +00002115hash_to_blob(const char *cp, u_char **blobp, size_t *lenp,
2116 const char *file, u_long lnum)
2117{
2118 char *tmp;
2119 size_t tlen;
2120 struct sshbuf *b;
2121 int r;
2122
2123 if (strncmp(cp, "SHA256:", 7) != 0)
2124 fatal("%s:%lu: unsupported hash algorithm", file, lnum);
2125 cp += 7;
2126
2127 /*
2128 * OpenSSH base64 hashes omit trailing '='
2129 * characters; put them back for decode.
2130 */
2131 tlen = strlen(cp);
2132 tmp = xmalloc(tlen + 4 + 1);
2133 strlcpy(tmp, cp, tlen + 1);
2134 while ((tlen % 4) != 0) {
2135 tmp[tlen++] = '=';
2136 tmp[tlen] = '\0';
2137 }
2138 if ((b = sshbuf_new()) == NULL)
2139 fatal("%s: sshbuf_new failed", __func__);
2140 if ((r = sshbuf_b64tod(b, tmp)) != 0)
2141 fatal("%s:%lu: decode hash failed: %s", file, lnum, ssh_err(r));
2142 free(tmp);
2143 *lenp = sshbuf_len(b);
2144 *blobp = xmalloc(*lenp);
2145 memcpy(*blobp, sshbuf_ptr(b), *lenp);
2146 sshbuf_free(b);
2147}
2148
2149static void
djm@openbsd.org669aee92015-01-30 01:10:33 +00002150update_krl_from_file(struct passwd *pw, const char *file, int wild_ca,
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002151 const struct sshkey *ca, struct ssh_krl *krl)
Damien Millerf3747bf2013-01-18 11:44:04 +11002152{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002153 struct sshkey *key = NULL;
Damien Millerf3747bf2013-01-18 11:44:04 +11002154 u_long lnum = 0;
markus@openbsd.org7f906352018-06-06 18:29:18 +00002155 char *path, *cp, *ep, *line = NULL;
djm@openbsd.org9405c622018-09-12 01:21:34 +00002156 u_char *blob = NULL;
2157 size_t blen = 0, linesize = 0;
Damien Millerf3747bf2013-01-18 11:44:04 +11002158 unsigned long long serial, serial2;
djm@openbsd.org9405c622018-09-12 01:21:34 +00002159 int i, was_explicit_key, was_sha1, was_sha256, was_hash, r;
Damien Millerf3747bf2013-01-18 11:44:04 +11002160 FILE *krl_spec;
2161
2162 path = tilde_expand_filename(file, pw->pw_uid);
2163 if (strcmp(path, "-") == 0) {
2164 krl_spec = stdin;
2165 free(path);
2166 path = xstrdup("(standard input)");
2167 } else if ((krl_spec = fopen(path, "r")) == NULL)
2168 fatal("fopen %s: %s", path, strerror(errno));
2169
2170 if (!quiet)
2171 printf("Revoking from %s\n", path);
markus@openbsd.org7f906352018-06-06 18:29:18 +00002172 while (getline(&line, &linesize, krl_spec) != -1) {
2173 lnum++;
djm@openbsd.org9405c622018-09-12 01:21:34 +00002174 was_explicit_key = was_sha1 = was_sha256 = was_hash = 0;
Damien Millerf3747bf2013-01-18 11:44:04 +11002175 cp = line + strspn(line, " \t");
2176 /* Trim trailing space, comments and strip \n */
2177 for (i = 0, r = -1; cp[i] != '\0'; i++) {
2178 if (cp[i] == '#' || cp[i] == '\n') {
2179 cp[i] = '\0';
2180 break;
2181 }
2182 if (cp[i] == ' ' || cp[i] == '\t') {
2183 /* Remember the start of a span of whitespace */
2184 if (r == -1)
2185 r = i;
2186 } else
2187 r = -1;
2188 }
2189 if (r != -1)
2190 cp[r] = '\0';
2191 if (*cp == '\0')
2192 continue;
2193 if (strncasecmp(cp, "serial:", 7) == 0) {
djm@openbsd.org669aee92015-01-30 01:10:33 +00002194 if (ca == NULL && !wild_ca) {
Damien Millerd234afb2013-08-21 02:42:58 +10002195 fatal("revoking certificates by serial number "
Damien Millerf3747bf2013-01-18 11:44:04 +11002196 "requires specification of a CA key");
2197 }
2198 cp += 7;
2199 cp = cp + strspn(cp, " \t");
2200 errno = 0;
2201 serial = strtoull(cp, &ep, 0);
2202 if (*cp == '\0' || (*ep != '\0' && *ep != '-'))
2203 fatal("%s:%lu: invalid serial \"%s\"",
2204 path, lnum, cp);
2205 if (errno == ERANGE && serial == ULLONG_MAX)
2206 fatal("%s:%lu: serial out of range",
2207 path, lnum);
2208 serial2 = serial;
2209 if (*ep == '-') {
2210 cp = ep + 1;
2211 errno = 0;
2212 serial2 = strtoull(cp, &ep, 0);
2213 if (*cp == '\0' || *ep != '\0')
2214 fatal("%s:%lu: invalid serial \"%s\"",
2215 path, lnum, cp);
2216 if (errno == ERANGE && serial2 == ULLONG_MAX)
2217 fatal("%s:%lu: serial out of range",
2218 path, lnum);
2219 if (serial2 <= serial)
2220 fatal("%s:%lu: invalid serial range "
2221 "%llu:%llu", path, lnum,
2222 (unsigned long long)serial,
2223 (unsigned long long)serial2);
2224 }
2225 if (ssh_krl_revoke_cert_by_serial_range(krl,
2226 ca, serial, serial2) != 0) {
2227 fatal("%s: revoke serial failed",
2228 __func__);
2229 }
2230 } else if (strncasecmp(cp, "id:", 3) == 0) {
djm@openbsd.org669aee92015-01-30 01:10:33 +00002231 if (ca == NULL && !wild_ca) {
Damien Millerd5d9d7b2013-08-21 02:43:27 +10002232 fatal("revoking certificates by key ID "
Damien Millerf3747bf2013-01-18 11:44:04 +11002233 "requires specification of a CA key");
2234 }
2235 cp += 3;
2236 cp = cp + strspn(cp, " \t");
2237 if (ssh_krl_revoke_cert_by_key_id(krl, ca, cp) != 0)
2238 fatal("%s: revoke key ID failed", __func__);
djm@openbsd.org9405c622018-09-12 01:21:34 +00002239 } else if (strncasecmp(cp, "hash:", 5) == 0) {
2240 cp += 5;
2241 cp = cp + strspn(cp, " \t");
2242 hash_to_blob(cp, &blob, &blen, file, lnum);
2243 r = ssh_krl_revoke_key_sha256(krl, blob, blen);
Damien Millerf3747bf2013-01-18 11:44:04 +11002244 } else {
2245 if (strncasecmp(cp, "key:", 4) == 0) {
2246 cp += 4;
2247 cp = cp + strspn(cp, " \t");
2248 was_explicit_key = 1;
2249 } else if (strncasecmp(cp, "sha1:", 5) == 0) {
2250 cp += 5;
2251 cp = cp + strspn(cp, " \t");
2252 was_sha1 = 1;
djm@openbsd.org9405c622018-09-12 01:21:34 +00002253 } else if (strncasecmp(cp, "sha256:", 7) == 0) {
2254 cp += 7;
2255 cp = cp + strspn(cp, " \t");
2256 was_sha256 = 1;
Damien Millerf3747bf2013-01-18 11:44:04 +11002257 /*
2258 * Just try to process the line as a key.
2259 * Parsing will fail if it isn't.
2260 */
2261 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002262 if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
markus@openbsd.org7da5df12017-05-30 14:16:41 +00002263 fatal("sshkey_new");
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002264 if ((r = sshkey_read(key, &cp)) != 0)
2265 fatal("%s:%lu: invalid key: %s",
2266 path, lnum, ssh_err(r));
Damien Millerf3747bf2013-01-18 11:44:04 +11002267 if (was_explicit_key)
2268 r = ssh_krl_revoke_key_explicit(krl, key);
djm@openbsd.org9405c622018-09-12 01:21:34 +00002269 else if (was_sha1) {
2270 if (sshkey_fingerprint_raw(key,
2271 SSH_DIGEST_SHA1, &blob, &blen) != 0) {
2272 fatal("%s:%lu: fingerprint failed",
2273 file, lnum);
2274 }
2275 r = ssh_krl_revoke_key_sha1(krl, blob, blen);
2276 } else if (was_sha256) {
2277 if (sshkey_fingerprint_raw(key,
2278 SSH_DIGEST_SHA256, &blob, &blen) != 0) {
2279 fatal("%s:%lu: fingerprint failed",
2280 file, lnum);
2281 }
2282 r = ssh_krl_revoke_key_sha256(krl, blob, blen);
2283 } else
Damien Millerf3747bf2013-01-18 11:44:04 +11002284 r = ssh_krl_revoke_key(krl, key);
2285 if (r != 0)
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002286 fatal("%s: revoke key failed: %s",
2287 __func__, ssh_err(r));
djm@openbsd.org9405c622018-09-12 01:21:34 +00002288 freezero(blob, blen);
2289 blob = NULL;
2290 blen = 0;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002291 sshkey_free(key);
Damien Millerf3747bf2013-01-18 11:44:04 +11002292 }
2293 }
2294 if (strcmp(path, "-") != 0)
2295 fclose(krl_spec);
markus@openbsd.org7f906352018-06-06 18:29:18 +00002296 free(line);
Damien Miller0d6771b2013-04-23 15:23:24 +10002297 free(path);
Damien Millerf3747bf2013-01-18 11:44:04 +11002298}
2299
2300static void
2301do_gen_krl(struct passwd *pw, int updating, int argc, char **argv)
2302{
2303 struct ssh_krl *krl;
2304 struct stat sb;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002305 struct sshkey *ca = NULL;
djm@openbsd.org669aee92015-01-30 01:10:33 +00002306 int fd, i, r, wild_ca = 0;
Damien Millerf3747bf2013-01-18 11:44:04 +11002307 char *tmp;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002308 struct sshbuf *kbuf;
Damien Millerf3747bf2013-01-18 11:44:04 +11002309
2310 if (*identity_file == '\0')
2311 fatal("KRL generation requires an output file");
2312 if (stat(identity_file, &sb) == -1) {
2313 if (errno != ENOENT)
2314 fatal("Cannot access KRL \"%s\": %s",
2315 identity_file, strerror(errno));
2316 if (updating)
2317 fatal("KRL \"%s\" does not exist", identity_file);
2318 }
2319 if (ca_key_path != NULL) {
djm@openbsd.org669aee92015-01-30 01:10:33 +00002320 if (strcasecmp(ca_key_path, "none") == 0)
2321 wild_ca = 1;
2322 else {
2323 tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
2324 if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)
2325 fatal("Cannot load CA public key %s: %s",
2326 tmp, ssh_err(r));
2327 free(tmp);
2328 }
Damien Millerf3747bf2013-01-18 11:44:04 +11002329 }
2330
2331 if (updating)
2332 load_krl(identity_file, &krl);
2333 else if ((krl = ssh_krl_init()) == NULL)
2334 fatal("couldn't create KRL");
2335
2336 if (cert_serial != 0)
2337 ssh_krl_set_version(krl, cert_serial);
2338 if (identity_comment != NULL)
2339 ssh_krl_set_comment(krl, identity_comment);
2340
2341 for (i = 0; i < argc; i++)
djm@openbsd.org669aee92015-01-30 01:10:33 +00002342 update_krl_from_file(pw, argv[i], wild_ca, ca, krl);
Damien Millerf3747bf2013-01-18 11:44:04 +11002343
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002344 if ((kbuf = sshbuf_new()) == NULL)
2345 fatal("sshbuf_new failed");
2346 if (ssh_krl_to_blob(krl, kbuf, NULL, 0) != 0)
Damien Millerf3747bf2013-01-18 11:44:04 +11002347 fatal("Couldn't generate KRL");
2348 if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
2349 fatal("open %s: %s", identity_file, strerror(errno));
markus@openbsd.org49f47e62018-07-09 21:59:10 +00002350 if (atomicio(vwrite, fd, sshbuf_mutable_ptr(kbuf), sshbuf_len(kbuf)) !=
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002351 sshbuf_len(kbuf))
Damien Millerf3747bf2013-01-18 11:44:04 +11002352 fatal("write %s: %s", identity_file, strerror(errno));
2353 close(fd);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002354 sshbuf_free(kbuf);
Damien Millerf3747bf2013-01-18 11:44:04 +11002355 ssh_krl_free(krl);
mmcc@openbsd.org89540b62015-12-11 02:31:47 +00002356 sshkey_free(ca);
Damien Millerf3747bf2013-01-18 11:44:04 +11002357}
2358
2359static void
2360do_check_krl(struct passwd *pw, int argc, char **argv)
2361{
2362 int i, r, ret = 0;
2363 char *comment;
2364 struct ssh_krl *krl;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002365 struct sshkey *k;
Damien Millerf3747bf2013-01-18 11:44:04 +11002366
2367 if (*identity_file == '\0')
2368 fatal("KRL checking requires an input file");
2369 load_krl(identity_file, &krl);
2370 for (i = 0; i < argc; i++) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002371 if ((r = sshkey_load_public(argv[i], &k, &comment)) != 0)
2372 fatal("Cannot load public key %s: %s",
2373 argv[i], ssh_err(r));
Damien Millerf3747bf2013-01-18 11:44:04 +11002374 r = ssh_krl_check_key(krl, k);
2375 printf("%s%s%s%s: %s\n", argv[i],
2376 *comment ? " (" : "", comment, *comment ? ")" : "",
2377 r == 0 ? "ok" : "REVOKED");
2378 if (r != 0)
2379 ret = 1;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002380 sshkey_free(k);
Damien Millerf3747bf2013-01-18 11:44:04 +11002381 free(comment);
2382 }
2383 ssh_krl_free(krl);
2384 exit(ret);
2385}
2386
2387static void
Damien Miller431f66b1999-11-21 18:31:57 +11002388usage(void)
2389{
Damien Millerf0858de2014-04-20 13:01:30 +10002390 fprintf(stderr,
djm@openbsd.org873d3e72017-04-30 23:18:44 +00002391 "usage: ssh-keygen [-q] [-b bits] [-t dsa | ecdsa | ed25519 | rsa]\n"
Damien Millerf0858de2014-04-20 13:01:30 +10002392 " [-N new_passphrase] [-C comment] [-f output_keyfile]\n"
2393 " ssh-keygen -p [-P old_passphrase] [-N new_passphrase] [-f keyfile]\n"
2394 " ssh-keygen -i [-m key_format] [-f input_keyfile]\n"
2395 " ssh-keygen -e [-m key_format] [-f input_keyfile]\n"
2396 " ssh-keygen -y [-f input_keyfile]\n"
2397 " ssh-keygen -c [-P passphrase] [-C comment] [-f keyfile]\n"
naddy@openbsd.org6288e3a2015-02-24 15:24:05 +00002398 " ssh-keygen -l [-v] [-E fingerprint_hash] [-f input_keyfile]\n"
djm@openbsd.org873d3e72017-04-30 23:18:44 +00002399 " ssh-keygen -B [-f input_keyfile]\n");
Damien Miller7ea845e2010-02-12 09:21:02 +11002400#ifdef ENABLE_PKCS11
Damien Millerf0858de2014-04-20 13:01:30 +10002401 fprintf(stderr,
2402 " ssh-keygen -D pkcs11\n");
Damien Miller7ea845e2010-02-12 09:21:02 +11002403#endif
Damien Millerf0858de2014-04-20 13:01:30 +10002404 fprintf(stderr,
2405 " ssh-keygen -F hostname [-f known_hosts_file] [-l]\n"
2406 " ssh-keygen -H [-f known_hosts_file]\n"
2407 " ssh-keygen -R hostname [-f known_hosts_file]\n"
2408 " ssh-keygen -r hostname [-f input_keyfile] [-g]\n"
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002409#ifdef WITH_OPENSSL
Damien Millerf0858de2014-04-20 13:01:30 +10002410 " ssh-keygen -G output_file [-v] [-b bits] [-M memory] [-S start_point]\n"
2411 " ssh-keygen -T output_file -f input_file [-v] [-a rounds] [-J num_lines]\n"
2412 " [-j start_line] [-K checkpt] [-W generator]\n"
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002413#endif
djm@openbsd.orga98339e2017-06-28 01:09:22 +00002414 " ssh-keygen -s ca_key -I certificate_identity [-h] [-U]\n"
2415 " [-D pkcs11_provider] [-n principals] [-O option]\n"
2416 " [-V validity_interval] [-z serial_number] file ...\n"
Damien Millerf0858de2014-04-20 13:01:30 +10002417 " ssh-keygen -L [-f input_keyfile]\n"
2418 " ssh-keygen -A\n"
2419 " ssh-keygen -k -f krl_file [-u] [-s ca_public] [-z version_number]\n"
2420 " file ...\n"
2421 " ssh-keygen -Q -f krl_file file ...\n");
Damien Miller95def091999-11-25 00:26:21 +11002422 exit(1);
Damien Miller431f66b1999-11-21 18:31:57 +11002423}
2424
Damien Miller95def091999-11-25 00:26:21 +11002425/*
2426 * Main program for key management.
2427 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +10002428int
Damien Millerdf8b7db2007-01-05 16:22:57 +11002429main(int argc, char **argv)
Damien Millerd4a8b7e1999-10-27 13:42:43 +10002430{
deraadt@openbsd.org2ae4f332015-01-16 06:40:12 +00002431 char dotsshdir[PATH_MAX], comment[1024], *passphrase1, *passphrase2;
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002432 char *rr_hostname = NULL, *ep, *fp, *ra;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002433 struct sshkey *private, *public;
Damien Miller95def091999-11-25 00:26:21 +11002434 struct passwd *pw;
Damien Miller95def091999-11-25 00:26:21 +11002435 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002436 int r, opt, type, fd;
Damien Millerf3747bf2013-01-18 11:44:04 +11002437 int gen_all_hostkeys = 0, gen_krl = 0, update_krl = 0, check_krl = 0;
Damien Miller95def091999-11-25 00:26:21 +11002438 FILE *f;
Damien Miller02e754f2005-05-26 12:19:39 +10002439 const char *errstr;
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002440#ifdef WITH_OPENSSL
2441 /* Moduli generation/screening */
2442 char out_file[PATH_MAX], *checkpoint = NULL;
2443 u_int32_t memory = 0, generator_wanted = 0;
2444 int do_gen_candidates = 0, do_screen_candidates = 0;
2445 unsigned long start_lineno = 0, lines_to_process = 0;
2446 BIGNUM *start = NULL;
2447#endif
Damien Miller0bc1bd82000-11-13 22:57:25 +11002448
Damien Miller95def091999-11-25 00:26:21 +11002449 extern int optind;
2450 extern char *optarg;
Damien Millerd4a8b7e1999-10-27 13:42:43 +10002451
dtucker@openbsd.orgffb1e7e2016-02-15 09:47:49 +00002452 ssh_malloc_init(); /* must be called before any mallocs */
Darren Tuckerce321d82005-10-03 18:11:24 +10002453 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
2454 sanitise_stdfd();
2455
Darren Tucker9ac56e92007-01-14 10:19:59 +11002456 __progname = ssh_get_progname(argv[0]);
Damien Millerf9b625c2000-07-09 22:42:32 +10002457
Damien Miller72ef7c12015-01-15 02:21:31 +11002458#ifdef WITH_OPENSSL
Damien Miller4314c2b2010-09-10 11:12:09 +10002459 OpenSSL_add_all_algorithms();
Damien Miller72ef7c12015-01-15 02:21:31 +11002460#endif
Damien Millerdf8b7db2007-01-05 16:22:57 +11002461 log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
Darren Tucker019cefe2003-08-02 22:40:07 +10002462
Kevin Steves3a881912002-07-20 19:05:40 +00002463 seed_rng();
Damien Millereba71ba2000-04-29 23:57:08 +10002464
djm@openbsd.orga287c5a2017-02-10 03:36:40 +00002465 msetlocale();
2466
Damien Miller5428f641999-11-25 11:54:57 +11002467 /* we need this for the home * directory. */
Damien Miller95def091999-11-25 00:26:21 +11002468 pw = getpwuid(getuid());
djm@openbsd.org3038a192015-04-17 13:19:22 +00002469 if (!pw)
2470 fatal("No user exists for uid %lu", (u_long)getuid());
2471 if (gethostname(hostname, sizeof(hostname)) < 0)
2472 fatal("gethostname: %s", strerror(errno));
Damien Miller5428f641999-11-25 11:54:57 +11002473
djm@openbsd.orga98339e2017-06-28 01:09:22 +00002474 /* Remaining characters: Ydw */
2475 while ((opt = getopt(argc, argv, "ABHLQUXceghiklopquvxy"
djm@openbsd.org56d1c832014-12-21 22:27:55 +00002476 "C:D:E:F:G:I:J:K:M:N:O:P:R:S:T:V:W:Z:"
2477 "a:b:f:g:j:m:n:r:s:t:z:")) != -1) {
Damien Miller95def091999-11-25 00:26:21 +11002478 switch (opt) {
Damien Miller58f1baf2011-05-05 14:06:15 +10002479 case 'A':
2480 gen_all_hostkeys = 1;
2481 break;
Damien Miller95def091999-11-25 00:26:21 +11002482 case 'b':
markus@openbsd.org1b11ea72018-02-23 15:58:37 +00002483 bits = (u_int32_t)strtonum(optarg, 10, 32768, &errstr);
Damien Miller02e754f2005-05-26 12:19:39 +10002484 if (errstr)
2485 fatal("Bits has bad value %s (%s)",
2486 optarg, errstr);
Damien Miller95def091999-11-25 00:26:21 +11002487 break;
djm@openbsd.org56d1c832014-12-21 22:27:55 +00002488 case 'E':
2489 fingerprint_hash = ssh_digest_alg_by_name(optarg);
2490 if (fingerprint_hash == -1)
2491 fatal("Invalid hash algorithm \"%s\"", optarg);
2492 break;
Damien Miller4b42d7f2005-03-01 21:48:35 +11002493 case 'F':
2494 find_host = 1;
2495 rr_hostname = optarg;
2496 break;
2497 case 'H':
2498 hash_hosts = 1;
2499 break;
Damien Miller0a80ca12010-02-27 07:55:05 +11002500 case 'I':
2501 cert_key_id = optarg;
2502 break;
Damien Miller4b42d7f2005-03-01 21:48:35 +11002503 case 'R':
2504 delete_host = 1;
2505 rr_hostname = optarg;
2506 break;
Damien Millerf2b70ca2010-03-05 07:39:35 +11002507 case 'L':
2508 show_cert = 1;
2509 break;
Damien Miller95def091999-11-25 00:26:21 +11002510 case 'l':
2511 print_fingerprint = 1;
2512 break;
Ben Lindstrom8fd372b2001-03-12 03:02:17 +00002513 case 'B':
2514 print_bubblebabble = 1;
2515 break;
Damien Miller44b25042010-07-02 13:35:01 +10002516 case 'm':
2517 if (strcasecmp(optarg, "RFC4716") == 0 ||
2518 strcasecmp(optarg, "ssh2") == 0) {
2519 convert_format = FMT_RFC4716;
2520 break;
2521 }
2522 if (strcasecmp(optarg, "PKCS8") == 0) {
2523 convert_format = FMT_PKCS8;
2524 break;
2525 }
2526 if (strcasecmp(optarg, "PEM") == 0) {
2527 convert_format = FMT_PEM;
djm@openbsd.orged7bd5d2018-08-08 01:16:01 +00002528 use_new_format = 0;
Damien Miller44b25042010-07-02 13:35:01 +10002529 break;
2530 }
2531 fatal("Unsupported conversion format \"%s\"", optarg);
Damien Miller0a80ca12010-02-27 07:55:05 +11002532 case 'n':
2533 cert_principals = optarg;
2534 break;
Damien Millerbcd00ab2013-12-07 10:41:55 +11002535 case 'o':
djm@openbsd.orged7bd5d2018-08-08 01:16:01 +00002536 /* no-op; new format is already the default */
Damien Millerbcd00ab2013-12-07 10:41:55 +11002537 break;
Damien Miller95def091999-11-25 00:26:21 +11002538 case 'p':
2539 change_passphrase = 1;
2540 break;
Damien Miller95def091999-11-25 00:26:21 +11002541 case 'c':
2542 change_comment = 1;
2543 break;
Damien Miller95def091999-11-25 00:26:21 +11002544 case 'f':
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002545 if (strlcpy(identity_file, optarg,
2546 sizeof(identity_file)) >= sizeof(identity_file))
Damien Millerb089fb52005-05-26 12:16:18 +10002547 fatal("Identity filename too long");
Damien Miller95def091999-11-25 00:26:21 +11002548 have_identity = 1;
2549 break;
Damien Miller37876e92003-05-15 10:19:46 +10002550 case 'g':
2551 print_generic = 1;
2552 break;
Damien Miller95def091999-11-25 00:26:21 +11002553 case 'P':
2554 identity_passphrase = optarg;
2555 break;
Damien Miller95def091999-11-25 00:26:21 +11002556 case 'N':
2557 identity_new_passphrase = optarg;
2558 break;
Damien Millerf3747bf2013-01-18 11:44:04 +11002559 case 'Q':
2560 check_krl = 1;
2561 break;
Damien Miller0a80ca12010-02-27 07:55:05 +11002562 case 'O':
Damien Miller4e270b02010-04-16 15:56:21 +10002563 add_cert_option(optarg);
Damien Miller0a80ca12010-02-27 07:55:05 +11002564 break;
Damien Millerbcd00ab2013-12-07 10:41:55 +11002565 case 'Z':
2566 new_format_cipher = optarg;
2567 break;
Damien Miller95def091999-11-25 00:26:21 +11002568 case 'C':
2569 identity_comment = optarg;
2570 break;
Damien Miller95def091999-11-25 00:26:21 +11002571 case 'q':
2572 quiet = 1;
2573 break;
Ben Lindstrom5a707822001-04-22 17:15:46 +00002574 case 'e':
Damien Millereba71ba2000-04-29 23:57:08 +10002575 case 'x':
Ben Lindstrom5a707822001-04-22 17:15:46 +00002576 /* export key */
Damien Miller44b25042010-07-02 13:35:01 +10002577 convert_to = 1;
Damien Millereba71ba2000-04-29 23:57:08 +10002578 break;
Damien Miller0a80ca12010-02-27 07:55:05 +11002579 case 'h':
2580 cert_key_type = SSH2_CERT_TYPE_HOST;
Damien Millerd0e4a8e2010-05-21 14:58:32 +10002581 certflags_flags = 0;
Damien Miller0a80ca12010-02-27 07:55:05 +11002582 break;
Damien Millerf3747bf2013-01-18 11:44:04 +11002583 case 'k':
2584 gen_krl = 1;
2585 break;
Ben Lindstrom5a707822001-04-22 17:15:46 +00002586 case 'i':
Damien Millereba71ba2000-04-29 23:57:08 +10002587 case 'X':
Ben Lindstrom5a707822001-04-22 17:15:46 +00002588 /* import key */
Damien Miller44b25042010-07-02 13:35:01 +10002589 convert_from = 1;
Damien Millereba71ba2000-04-29 23:57:08 +10002590 break;
Damien Millereba71ba2000-04-29 23:57:08 +10002591 case 'y':
2592 print_public = 1;
2593 break;
Damien Miller0a80ca12010-02-27 07:55:05 +11002594 case 's':
2595 ca_key_path = optarg;
2596 break;
Damien Miller0bc1bd82000-11-13 22:57:25 +11002597 case 't':
2598 key_type_name = optarg;
Damien Miller0bc1bd82000-11-13 22:57:25 +11002599 break;
Ben Lindstrom8282d6a2001-08-06 21:44:05 +00002600 case 'D':
Damien Miller7ea845e2010-02-12 09:21:02 +11002601 pkcs11provider = optarg;
Ben Lindstromcd392282001-07-04 03:44:03 +00002602 break;
djm@openbsd.orga98339e2017-06-28 01:09:22 +00002603 case 'U':
2604 prefer_agent = 1;
2605 break;
Damien Millerf3747bf2013-01-18 11:44:04 +11002606 case 'u':
2607 update_krl = 1;
2608 break;
Darren Tucker06930c72003-12-31 11:34:51 +11002609 case 'v':
2610 if (log_level == SYSLOG_LEVEL_INFO)
2611 log_level = SYSLOG_LEVEL_DEBUG1;
2612 else {
Darren Tuckerfc959702004-07-17 16:12:08 +10002613 if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
Darren Tucker06930c72003-12-31 11:34:51 +11002614 log_level < SYSLOG_LEVEL_DEBUG3)
2615 log_level++;
2616 }
2617 break;
Damien Miller37876e92003-05-15 10:19:46 +10002618 case 'r':
Damien Miller4b42d7f2005-03-01 21:48:35 +11002619 rr_hostname = optarg;
Damien Miller37876e92003-05-15 10:19:46 +10002620 break;
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002621 case 'a':
2622 rounds = (int)strtonum(optarg, 1, INT_MAX, &errstr);
2623 if (errstr)
2624 fatal("Invalid number: %s (%s)",
2625 optarg, errstr);
2626 break;
2627 case 'V':
2628 parse_cert_times(optarg);
2629 break;
2630 case 'z':
2631 errno = 0;
2632 cert_serial = strtoull(optarg, &ep, 10);
2633 if (*optarg < '0' || *optarg > '9' || *ep != '\0' ||
2634 (errno == ERANGE && cert_serial == ULLONG_MAX))
2635 fatal("Invalid serial number \"%s\"", optarg);
2636 break;
2637#ifdef WITH_OPENSSL
2638 /* Moduli generation/screening */
Darren Tucker019cefe2003-08-02 22:40:07 +10002639 case 'G':
2640 do_gen_candidates = 1;
Damien Millerb089fb52005-05-26 12:16:18 +10002641 if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2642 sizeof(out_file))
2643 fatal("Output filename too long");
Darren Tucker019cefe2003-08-02 22:40:07 +10002644 break;
Darren Tucker0bb29802016-09-12 11:07:00 +10002645 case 'J':
2646 lines_to_process = strtoul(optarg, NULL, 10);
dtucker@openbsd.org7b63cf62016-09-12 03:29:16 +00002647 break;
Darren Tucker0bb29802016-09-12 11:07:00 +10002648 case 'j':
2649 start_lineno = strtoul(optarg, NULL, 10);
dtucker@openbsd.org7b63cf62016-09-12 03:29:16 +00002650 break;
Damien Miller390d0562011-10-18 16:05:19 +11002651 case 'K':
deraadt@openbsd.org2ae4f332015-01-16 06:40:12 +00002652 if (strlen(optarg) >= PATH_MAX)
Damien Miller390d0562011-10-18 16:05:19 +11002653 fatal("Checkpoint filename too long");
2654 checkpoint = xstrdup(optarg);
2655 break;
Darren Tuckerd8c3cfb2016-09-12 13:30:50 +10002656 case 'M':
2657 memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX,
2658 &errstr);
2659 if (errstr)
2660 fatal("Memory limit is %s: %s", errstr, optarg);
2661 break;
Darren Tucker019cefe2003-08-02 22:40:07 +10002662 case 'S':
2663 /* XXX - also compare length against bits */
2664 if (BN_hex2bn(&start, optarg) == 0)
2665 fatal("Invalid start point.");
2666 break;
Darren Tuckeraf48d542016-09-12 13:52:17 +10002667 case 'T':
2668 do_screen_candidates = 1;
2669 if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2670 sizeof(out_file))
2671 fatal("Output filename too long");
2672 break;
Darren Tucker43cceff2016-09-12 13:55:37 +10002673 case 'W':
2674 generator_wanted = (u_int32_t)strtonum(optarg, 1,
2675 UINT_MAX, &errstr);
Darren Tucker70508962016-09-12 13:57:28 +10002676 if (errstr != NULL)
2677 fatal("Desired generator invalid: %s (%s)",
2678 optarg, errstr);
Darren Tucker43cceff2016-09-12 13:55:37 +10002679 break;
Damien Miller72ef7c12015-01-15 02:21:31 +11002680#endif /* WITH_OPENSSL */
Damien Miller95def091999-11-25 00:26:21 +11002681 case '?':
2682 default:
2683 usage();
2684 }
2685 }
Darren Tucker06930c72003-12-31 11:34:51 +11002686
2687 /* reinit */
Damien Millerdf8b7db2007-01-05 16:22:57 +11002688 log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
Darren Tucker06930c72003-12-31 11:34:51 +11002689
Damien Miller0a80ca12010-02-27 07:55:05 +11002690 argv += optind;
2691 argc -= optind;
2692
2693 if (ca_key_path != NULL) {
Damien Millerf3747bf2013-01-18 11:44:04 +11002694 if (argc < 1 && !gen_krl) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00002695 error("Too few arguments.");
Damien Miller0a80ca12010-02-27 07:55:05 +11002696 usage();
2697 }
Damien Millerf3747bf2013-01-18 11:44:04 +11002698 } else if (argc > 0 && !gen_krl && !check_krl) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00002699 error("Too many arguments.");
Damien Miller95def091999-11-25 00:26:21 +11002700 usage();
2701 }
2702 if (change_passphrase && change_comment) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00002703 error("Can only have one of -p and -c.");
Damien Miller95def091999-11-25 00:26:21 +11002704 usage();
2705 }
Darren Tucker0f7e9102008-06-08 12:54:29 +10002706 if (print_fingerprint && (delete_host || hash_hosts)) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00002707 error("Cannot use -l with -H or -R.");
Darren Tucker0f7e9102008-06-08 12:54:29 +10002708 usage();
2709 }
Damien Millerf3747bf2013-01-18 11:44:04 +11002710 if (gen_krl) {
2711 do_gen_krl(pw, update_krl, argc, argv);
2712 return (0);
2713 }
2714 if (check_krl) {
2715 do_check_krl(pw, argc, argv);
2716 return (0);
2717 }
Damien Miller0a80ca12010-02-27 07:55:05 +11002718 if (ca_key_path != NULL) {
2719 if (cert_key_id == NULL)
2720 fatal("Must specify key id (-I) when certifying");
2721 do_ca_sign(pw, argc, argv);
2722 }
Damien Millerf2b70ca2010-03-05 07:39:35 +11002723 if (show_cert)
2724 do_show_cert(pw);
Damien Miller4b42d7f2005-03-01 21:48:35 +11002725 if (delete_host || hash_hosts || find_host)
2726 do_known_hosts(pw, rr_hostname);
Damien Millerec77c952013-01-09 15:58:00 +11002727 if (pkcs11provider != NULL)
2728 do_download(pw);
Ben Lindstrom8fd372b2001-03-12 03:02:17 +00002729 if (print_fingerprint || print_bubblebabble)
Damien Miller95def091999-11-25 00:26:21 +11002730 do_fingerprint(pw);
Damien Miller95def091999-11-25 00:26:21 +11002731 if (change_passphrase)
2732 do_change_passphrase(pw);
Damien Miller4a10d2e2002-03-11 22:53:29 +11002733 if (change_comment)
2734 do_change_comment(pw);
Damien Miller1f0311c2014-05-15 14:24:09 +10002735#ifdef WITH_OPENSSL
Damien Miller44b25042010-07-02 13:35:01 +10002736 if (convert_to)
2737 do_convert_to(pw);
2738 if (convert_from)
2739 do_convert_from(pw);
Damien Miller1f0311c2014-05-15 14:24:09 +10002740#endif
Damien Millereba71ba2000-04-29 23:57:08 +10002741 if (print_public)
2742 do_print_public(pw);
Damien Miller4b42d7f2005-03-01 21:48:35 +11002743 if (rr_hostname != NULL) {
Damien Millercb314822006-03-26 13:48:01 +11002744 unsigned int n = 0;
2745
2746 if (have_identity) {
2747 n = do_print_resource_record(pw,
2748 identity_file, rr_hostname);
djm@openbsd.org3038a192015-04-17 13:19:22 +00002749 if (n == 0)
2750 fatal("%s: %s", identity_file, strerror(errno));
Damien Millercb314822006-03-26 13:48:01 +11002751 exit(0);
2752 } else {
2753
2754 n += do_print_resource_record(pw,
2755 _PATH_HOST_RSA_KEY_FILE, rr_hostname);
2756 n += do_print_resource_record(pw,
2757 _PATH_HOST_DSA_KEY_FILE, rr_hostname);
Damien Miller3bde12a2012-06-20 21:51:11 +10002758 n += do_print_resource_record(pw,
2759 _PATH_HOST_ECDSA_KEY_FILE, rr_hostname);
Damien Miller16cd3922014-05-15 13:45:58 +10002760 n += do_print_resource_record(pw,
2761 _PATH_HOST_ED25519_KEY_FILE, rr_hostname);
markus@openbsd.org1b11ea72018-02-23 15:58:37 +00002762 n += do_print_resource_record(pw,
2763 _PATH_HOST_XMSS_KEY_FILE, rr_hostname);
Damien Millercb314822006-03-26 13:48:01 +11002764 if (n == 0)
2765 fatal("no keys found.");
2766 exit(0);
2767 }
Damien Miller37876e92003-05-15 10:19:46 +10002768 }
Damien Miller95def091999-11-25 00:26:21 +11002769
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002770#ifdef WITH_OPENSSL
Darren Tucker019cefe2003-08-02 22:40:07 +10002771 if (do_gen_candidates) {
2772 FILE *out = fopen(out_file, "w");
Damien Miller787b2ec2003-11-21 23:56:47 +11002773
Darren Tucker019cefe2003-08-02 22:40:07 +10002774 if (out == NULL) {
2775 error("Couldn't open modulus candidate file \"%s\": %s",
2776 out_file, strerror(errno));
2777 return (1);
2778 }
Damien Miller3f54a9f2005-11-05 14:52:18 +11002779 if (bits == 0)
2780 bits = DEFAULT_BITS;
Darren Tucker019cefe2003-08-02 22:40:07 +10002781 if (gen_candidates(out, memory, bits, start) != 0)
Damien Miller15d72a02005-11-05 15:07:33 +11002782 fatal("modulus candidate generation failed");
Darren Tucker019cefe2003-08-02 22:40:07 +10002783
2784 return (0);
2785 }
2786
2787 if (do_screen_candidates) {
2788 FILE *in;
Damien Miller78d22712013-02-12 11:03:36 +11002789 FILE *out = fopen(out_file, "a");
Darren Tucker019cefe2003-08-02 22:40:07 +10002790
2791 if (have_identity && strcmp(identity_file, "-") != 0) {
2792 if ((in = fopen(identity_file, "r")) == NULL) {
2793 fatal("Couldn't open modulus candidate "
Damien Millera8e06ce2003-11-21 23:48:55 +11002794 "file \"%s\": %s", identity_file,
Darren Tucker019cefe2003-08-02 22:40:07 +10002795 strerror(errno));
2796 }
2797 } else
2798 in = stdin;
2799
2800 if (out == NULL) {
2801 fatal("Couldn't open moduli file \"%s\": %s",
2802 out_file, strerror(errno));
2803 }
Damien Millerbcd00ab2013-12-07 10:41:55 +11002804 if (prime_test(in, out, rounds == 0 ? 100 : rounds,
2805 generator_wanted, checkpoint,
Damien Millerdfceafe2012-07-06 13:44:19 +10002806 start_lineno, lines_to_process) != 0)
Damien Miller15d72a02005-11-05 15:07:33 +11002807 fatal("modulus screening failed");
Darren Tuckerf4220e62003-08-21 16:44:07 +10002808 return (0);
Darren Tucker019cefe2003-08-02 22:40:07 +10002809 }
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002810#endif
Darren Tucker019cefe2003-08-02 22:40:07 +10002811
Damien Miller58f1baf2011-05-05 14:06:15 +10002812 if (gen_all_hostkeys) {
2813 do_gen_all_hostkeys(pw);
2814 return (0);
2815 }
2816
Damien Millerf14be5c2005-11-05 15:15:49 +11002817 if (key_type_name == NULL)
djm@openbsd.orgd1958792015-05-28 04:40:13 +00002818 key_type_name = DEFAULT_KEY_TYPE_NAME;
Damien Millerf14be5c2005-11-05 15:15:49 +11002819
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002820 type = sshkey_type_from_name(key_type_name);
djm@openbsd.org7efb4552015-01-18 13:22:28 +00002821 type_bits_valid(type, key_type_name, &bits);
Damien Miller58f1baf2011-05-05 14:06:15 +10002822
Darren Tucker3af2ac52005-11-29 13:10:24 +11002823 if (!quiet)
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002824 printf("Generating public/private %s key pair.\n",
2825 key_type_name);
djm@openbsd.org3038a192015-04-17 13:19:22 +00002826 if ((r = sshkey_generate(type, bits, &private)) != 0)
markus@openbsd.org7da5df12017-05-30 14:16:41 +00002827 fatal("sshkey_generate failed");
djm@openbsd.org3038a192015-04-17 13:19:22 +00002828 if ((r = sshkey_from_private(private, &public)) != 0)
markus@openbsd.org7da5df12017-05-30 14:16:41 +00002829 fatal("sshkey_from_private failed: %s\n", ssh_err(r));
Damien Miller95def091999-11-25 00:26:21 +11002830
2831 if (!have_identity)
2832 ask_filename(pw, "Enter file in which to save the key");
2833
Damien Miller788f2122005-11-05 15:14:59 +11002834 /* Create ~/.ssh directory if it doesn't already exist. */
Damien Miller50af79b2010-05-10 11:52:00 +10002835 snprintf(dotsshdir, sizeof dotsshdir, "%s/%s",
2836 pw->pw_dir, _PATH_SSH_USER_DIR);
2837 if (strstr(identity_file, dotsshdir) != NULL) {
2838 if (stat(dotsshdir, &st) < 0) {
2839 if (errno != ENOENT) {
2840 error("Could not stat %s: %s", dotsshdir,
2841 strerror(errno));
2842 } else if (mkdir(dotsshdir, 0700) < 0) {
2843 error("Could not create directory '%s': %s",
2844 dotsshdir, strerror(errno));
2845 } else if (!quiet)
2846 printf("Created directory '%s'.\n", dotsshdir);
2847 }
Damien Miller95def091999-11-25 00:26:21 +11002848 }
2849 /* If the file already exists, ask the user to confirm. */
2850 if (stat(identity_file, &st) >= 0) {
2851 char yesno[3];
2852 printf("%s already exists.\n", identity_file);
2853 printf("Overwrite (y/n)? ");
2854 fflush(stdout);
2855 if (fgets(yesno, sizeof(yesno), stdin) == NULL)
2856 exit(1);
2857 if (yesno[0] != 'y' && yesno[0] != 'Y')
2858 exit(1);
2859 }
2860 /* Ask for a passphrase (twice). */
2861 if (identity_passphrase)
2862 passphrase1 = xstrdup(identity_passphrase);
2863 else if (identity_new_passphrase)
2864 passphrase1 = xstrdup(identity_new_passphrase);
2865 else {
2866passphrase_again:
2867 passphrase1 =
Ben Lindstrom949974b2001-06-25 05:20:31 +00002868 read_passphrase("Enter passphrase (empty for no "
2869 "passphrase): ", RP_ALLOW_STDIN);
2870 passphrase2 = read_passphrase("Enter same passphrase again: ",
2871 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +11002872 if (strcmp(passphrase1, passphrase2) != 0) {
Ben Lindstrom949974b2001-06-25 05:20:31 +00002873 /*
2874 * The passphrases do not match. Clear them and
2875 * retry.
2876 */
Damien Millera5103f42014-02-04 11:20:14 +11002877 explicit_bzero(passphrase1, strlen(passphrase1));
2878 explicit_bzero(passphrase2, strlen(passphrase2));
Darren Tuckera627d422013-06-02 07:31:17 +10002879 free(passphrase1);
2880 free(passphrase2);
Damien Miller95def091999-11-25 00:26:21 +11002881 printf("Passphrases do not match. Try again.\n");
2882 goto passphrase_again;
2883 }
2884 /* Clear the other copy of the passphrase. */
Damien Millera5103f42014-02-04 11:20:14 +11002885 explicit_bzero(passphrase2, strlen(passphrase2));
Darren Tuckera627d422013-06-02 07:31:17 +10002886 free(passphrase2);
Damien Miller95def091999-11-25 00:26:21 +11002887 }
2888
Damien Miller95def091999-11-25 00:26:21 +11002889 if (identity_comment) {
2890 strlcpy(comment, identity_comment, sizeof(comment));
2891 } else {
Darren Tuckere15fb092008-11-11 16:31:43 +11002892 /* Create default comment field for the passphrase. */
Damien Miller95def091999-11-25 00:26:21 +11002893 snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
2894 }
2895
2896 /* Save the key with the given passphrase and comment. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002897 if ((r = sshkey_save_private(private, identity_file, passphrase1,
2898 comment, use_new_format, new_format_cipher, rounds)) != 0) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00002899 error("Saving key \"%s\" failed: %s",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002900 identity_file, ssh_err(r));
Damien Millera5103f42014-02-04 11:20:14 +11002901 explicit_bzero(passphrase1, strlen(passphrase1));
Darren Tuckera627d422013-06-02 07:31:17 +10002902 free(passphrase1);
Damien Miller95def091999-11-25 00:26:21 +11002903 exit(1);
2904 }
2905 /* Clear the passphrase. */
Damien Millera5103f42014-02-04 11:20:14 +11002906 explicit_bzero(passphrase1, strlen(passphrase1));
Darren Tuckera627d422013-06-02 07:31:17 +10002907 free(passphrase1);
Damien Miller95def091999-11-25 00:26:21 +11002908
2909 /* Clear the private key and the random number generator. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002910 sshkey_free(private);
Damien Miller95def091999-11-25 00:26:21 +11002911
2912 if (!quiet)
2913 printf("Your identification has been saved in %s.\n", identity_file);
2914
Damien Miller95def091999-11-25 00:26:21 +11002915 strlcat(identity_file, ".pub", sizeof(identity_file));
djm@openbsd.org3038a192015-04-17 13:19:22 +00002916 if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
2917 fatal("Unable to save public key to %s: %s",
2918 identity_file, strerror(errno));
2919 if ((f = fdopen(fd, "w")) == NULL)
2920 fatal("fdopen %s failed: %s", identity_file, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002921 if ((r = sshkey_write(public, f)) != 0)
djm@openbsd.org3038a192015-04-17 13:19:22 +00002922 error("write key failed: %s", ssh_err(r));
Damien Millereba71ba2000-04-29 23:57:08 +10002923 fprintf(f, " %s\n", comment);
djm@openbsd.orgb56ac062018-02-10 05:43:26 +00002924 if (ferror(f) || fclose(f) != 0)
2925 fatal("write public failed: %s", strerror(errno));
Damien Miller95def091999-11-25 00:26:21 +11002926
2927 if (!quiet) {
djm@openbsd.org9ce86c92015-01-28 22:36:00 +00002928 fp = sshkey_fingerprint(public, fingerprint_hash,
djm@openbsd.org56d1c832014-12-21 22:27:55 +00002929 SSH_FP_DEFAULT);
djm@openbsd.org9ce86c92015-01-28 22:36:00 +00002930 ra = sshkey_fingerprint(public, fingerprint_hash,
Darren Tucker9c16ac92008-06-13 04:40:35 +10002931 SSH_FP_RANDOMART);
djm@openbsd.org9ce86c92015-01-28 22:36:00 +00002932 if (fp == NULL || ra == NULL)
2933 fatal("sshkey_fingerprint failed");
Damien Millereba71ba2000-04-29 23:57:08 +10002934 printf("Your public key has been saved in %s.\n",
2935 identity_file);
Damien Miller95def091999-11-25 00:26:21 +11002936 printf("The key fingerprint is:\n");
Ben Lindstromcfccef92001-03-13 04:57:58 +00002937 printf("%s %s\n", fp, comment);
Darren Tucker9c16ac92008-06-13 04:40:35 +10002938 printf("The key's randomart image is:\n");
2939 printf("%s\n", ra);
Darren Tuckera627d422013-06-02 07:31:17 +10002940 free(ra);
2941 free(fp);
Damien Miller95def091999-11-25 00:26:21 +11002942 }
Damien Millereba71ba2000-04-29 23:57:08 +10002943
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002944 sshkey_free(public);
Damien Miller95def091999-11-25 00:26:21 +11002945 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10002946}