Annotation of src/usr.bin/ssh/ssh-keygen.c, Revision 1.302
1.302 ! djm 1: /* $OpenBSD: ssh-keygen.c,v 1.301 2017/04/30 23:10:43 djm Exp $ */
1.1 deraadt 2: /*
1.13 deraadt 3: * Author: Tatu Ylonen <ylo@cs.hut.fi>
4: * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5: * All rights reserved
6: * Identity and host key generation and maintenance.
1.31 deraadt 7: *
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".
1.13 deraadt 13: */
1.1 deraadt 14:
1.136 stevesk 15: #include <sys/types.h>
1.174 dtucker 16: #include <sys/socket.h>
1.136 stevesk 17: #include <sys/stat.h>
1.19 markus 18:
19: #include <openssl/evp.h>
20: #include <openssl/pem.h>
1.145 stevesk 21:
1.148 stevesk 22: #include <errno.h>
1.147 stevesk 23: #include <fcntl.h>
1.248 djm 24: #include <netdb.h>
1.145 stevesk 25: #include <pwd.h>
1.153 stevesk 26: #include <stdio.h>
1.152 stevesk 27: #include <stdlib.h>
1.150 stevesk 28: #include <string.h>
1.149 stevesk 29: #include <unistd.h>
1.253 deraadt 30: #include <limits.h>
1.294 djm 31: #include <locale.h>
1.1 deraadt 32:
33: #include "xmalloc.h"
1.252 djm 34: #include "sshkey.h"
1.53 markus 35: #include "rsa.h"
1.19 markus 36: #include "authfile.h"
37: #include "uuencode.h"
1.252 djm 38: #include "sshbuf.h"
1.40 markus 39: #include "pathnames.h"
1.41 markus 40: #include "log.h"
1.114 djm 41: #include "misc.h"
1.119 djm 42: #include "match.h"
43: #include "hostfile.h"
1.146 stevesk 44: #include "dns.h"
1.223 djm 45: #include "ssh.h"
1.179 djm 46: #include "ssh2.h"
1.252 djm 47: #include "ssherr.h"
1.223 djm 48: #include "atomicio.h"
49: #include "krl.h"
1.251 djm 50: #include "digest.h"
1.294 djm 51: #include "utf8.h"
1.32 markus 52:
1.177 markus 53: #ifdef ENABLE_PKCS11
54: #include "ssh-pkcs11.h"
1.106 djm 55: #endif
1.66 markus 56:
1.273 djm 57: #ifdef WITH_OPENSSL
58: # define DEFAULT_KEY_TYPE_NAME "rsa"
59: #else
60: # define DEFAULT_KEY_TYPE_NAME "ed25519"
61: #endif
62:
1.130 markus 63: /* Number of bits in the RSA/DSA key. This value can be set on the command line. */
64: #define DEFAULT_BITS 2048
65: #define DEFAULT_BITS_DSA 1024
1.203 naddy 66: #define DEFAULT_BITS_ECDSA 256
1.130 markus 67: u_int32_t bits = 0;
1.1 deraadt 68:
1.14 markus 69: /*
70: * Flag indicating that we just want to change the passphrase. This can be
71: * set on the command line.
72: */
1.1 deraadt 73: int change_passphrase = 0;
74:
1.14 markus 75: /*
76: * Flag indicating that we just want to change the comment. This can be set
77: * on the command line.
78: */
1.1 deraadt 79: int change_comment = 0;
80:
1.2 provos 81: int quiet = 0;
82:
1.169 grunk 83: int log_level = SYSLOG_LEVEL_INFO;
84:
1.119 djm 85: /* Flag indicating that we want to hash a known_hosts file */
86: int hash_hosts = 0;
87: /* Flag indicating that we want lookup a host in known_hosts file */
88: int find_host = 0;
89: /* Flag indicating that we want to delete a host from a known_hosts file */
90: int delete_host = 0;
91:
1.182 djm 92: /* Flag indicating that we want to show the contents of a certificate */
93: int show_cert = 0;
94:
1.8 markus 95: /* Flag indicating that we just want to see the key fingerprint */
96: int print_fingerprint = 0;
1.49 markus 97: int print_bubblebabble = 0;
1.8 markus 98:
1.251 djm 99: /* Hash algorithm to use for fingerprints. */
100: int fingerprint_hash = SSH_FP_HASH_DEFAULT;
101:
1.10 markus 102: /* The identity file name, given on the command line or entered by the user. */
103: char identity_file[1024];
104: int have_identity = 0;
1.1 deraadt 105:
106: /* This is set to the passphrase if given on the command line. */
107: char *identity_passphrase = NULL;
108:
109: /* This is set to the new passphrase if given on the command line. */
110: char *identity_new_passphrase = NULL;
111:
112: /* This is set to the new comment if given on the command line. */
113: char *identity_comment = NULL;
114:
1.179 djm 115: /* Path to CA key when certifying keys. */
116: char *ca_key_path = NULL;
117:
1.186 djm 118: /* Certificate serial number */
1.220 djm 119: unsigned long long cert_serial = 0;
1.186 djm 120:
1.179 djm 121: /* Key type when certifying */
122: u_int cert_key_type = SSH2_CERT_TYPE_USER;
123:
124: /* "key ID" of signed key */
125: char *cert_key_id = NULL;
126:
127: /* Comma-separated list of principal names for certifying keys */
128: char *cert_principals = NULL;
129:
130: /* Validity period for certificates */
131: u_int64_t cert_valid_from = 0;
132: u_int64_t cert_valid_to = ~0ULL;
133:
1.186 djm 134: /* Certificate options */
1.190 djm 135: #define CERTOPT_X_FWD (1)
136: #define CERTOPT_AGENT_FWD (1<<1)
137: #define CERTOPT_PORT_FWD (1<<2)
138: #define CERTOPT_PTY (1<<3)
139: #define CERTOPT_USER_RC (1<<4)
140: #define CERTOPT_DEFAULT (CERTOPT_X_FWD|CERTOPT_AGENT_FWD| \
141: CERTOPT_PORT_FWD|CERTOPT_PTY|CERTOPT_USER_RC)
142: u_int32_t certflags_flags = CERTOPT_DEFAULT;
143: char *certflags_command = NULL;
144: char *certflags_src_addr = NULL;
1.179 djm 145:
1.300 djm 146: /* Arbitrary extensions specified by user */
147: struct cert_userext {
148: char *key;
149: char *val;
150: int crit;
151: };
152: struct cert_userext *cert_userext;
153: size_t ncert_userext;
154:
1.193 djm 155: /* Conversion to/from various formats */
156: int convert_to = 0;
157: int convert_from = 0;
158: enum {
159: FMT_RFC4716,
160: FMT_PKCS8,
161: FMT_PEM
162: } convert_format = FMT_RFC4716;
1.19 markus 163: int print_public = 0;
1.105 jakob 164: int print_generic = 0;
1.33 markus 165:
1.87 djm 166: char *key_type_name = NULL;
1.19 markus 167:
1.197 djm 168: /* Load key from this PKCS#11 provider */
169: char *pkcs11provider = NULL;
1.193 djm 170:
1.237 markus 171: /* Use new OpenSSH private key format when writing SSH2 keys instead of PEM */
172: int use_new_format = 0;
173:
174: /* Cipher for new-format private keys */
175: char *new_format_cipher = NULL;
176:
177: /*
178: * Number of KDF rounds to derive new format keys /
179: * number of primality trials when screening moduli.
180: */
181: int rounds = 0;
182:
1.10 markus 183: /* argv0 */
184: extern char *__progname;
1.1 deraadt 185:
1.248 djm 186: char hostname[NI_MAXHOST];
1.19 markus 187:
1.274 djm 188: #ifdef WITH_OPENSSL
1.115 djm 189: /* moduli.c */
1.124 avsm 190: int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *);
1.215 dtucker 191: int prime_test(FILE *, FILE *, u_int32_t, u_int32_t, char *, unsigned long,
192: unsigned long);
1.274 djm 193: #endif
1.115 djm 194:
1.63 itojun 195: static void
1.255 djm 196: type_bits_valid(int type, const char *name, u_int32_t *bitsp)
1.206 stevesk 197: {
1.271 djm 198: #ifdef WITH_OPENSSL
1.255 djm 199: u_int maxbits, nid;
1.271 djm 200: #endif
1.206 stevesk 201:
1.269 djm 202: if (type == KEY_UNSPEC)
203: fatal("unknown key type %s", key_type_name);
1.209 djm 204: if (*bitsp == 0) {
1.271 djm 205: #ifdef WITH_OPENSSL
1.206 stevesk 206: if (type == KEY_DSA)
1.209 djm 207: *bitsp = DEFAULT_BITS_DSA;
1.255 djm 208: else if (type == KEY_ECDSA) {
209: if (name != NULL &&
210: (nid = sshkey_ecdsa_nid_from_name(name)) > 0)
211: *bitsp = sshkey_curve_nid_to_bits(nid);
212: if (*bitsp == 0)
213: *bitsp = DEFAULT_BITS_ECDSA;
1.291 dtucker 214: } else
1.271 djm 215: #endif
1.209 djm 216: *bitsp = DEFAULT_BITS;
1.206 stevesk 217: }
1.271 djm 218: #ifdef WITH_OPENSSL
1.206 stevesk 219: maxbits = (type == KEY_DSA) ?
220: OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS;
1.269 djm 221: if (*bitsp > maxbits)
222: fatal("key bits exceeds maximum %d", maxbits);
1.209 djm 223: if (type == KEY_DSA && *bitsp != 1024)
1.206 stevesk 224: fatal("DSA keys must be 1024 bits");
1.276 djm 225: else if (type != KEY_ECDSA && type != KEY_ED25519 && *bitsp < 1024)
226: fatal("Key must at least be 1024 bits");
1.252 djm 227: else if (type == KEY_ECDSA && sshkey_ecdsa_bits_to_nid(*bitsp) == -1)
1.206 stevesk 228: fatal("Invalid ECDSA key length - valid lengths are "
229: "256, 384 or 521 bits");
1.246 markus 230: #endif
1.206 stevesk 231: }
232:
233: static void
1.10 markus 234: ask_filename(struct passwd *pw, const char *prompt)
1.1 deraadt 235: {
1.12 markus 236: char buf[1024];
1.35 markus 237: char *name = NULL;
238:
1.92 stevesk 239: if (key_type_name == NULL)
1.40 markus 240: name = _PATH_SSH_CLIENT_ID_RSA;
1.140 deraadt 241: else {
1.252 djm 242: switch (sshkey_type_from_name(key_type_name)) {
1.186 djm 243: case KEY_DSA_CERT:
1.92 stevesk 244: case KEY_DSA:
245: name = _PATH_SSH_CLIENT_ID_DSA;
246: break;
1.200 djm 247: case KEY_ECDSA_CERT:
248: case KEY_ECDSA:
249: name = _PATH_SSH_CLIENT_ID_ECDSA;
250: break;
1.186 djm 251: case KEY_RSA_CERT:
1.92 stevesk 252: case KEY_RSA:
253: name = _PATH_SSH_CLIENT_ID_RSA;
254: break;
1.238 markus 255: case KEY_ED25519:
256: case KEY_ED25519_CERT:
257: name = _PATH_SSH_CLIENT_ID_ED25519;
258: break;
1.92 stevesk 259: default:
1.269 djm 260: fatal("bad key type");
1.92 stevesk 261: }
1.140 deraadt 262: }
1.269 djm 263: snprintf(identity_file, sizeof(identity_file),
264: "%s/%s", pw->pw_dir, name);
265: printf("%s (%s): ", prompt, identity_file);
266: fflush(stdout);
1.12 markus 267: if (fgets(buf, sizeof(buf), stdin) == NULL)
268: exit(1);
1.162 gilles 269: buf[strcspn(buf, "\n")] = '\0';
1.12 markus 270: if (strcmp(buf, "") != 0)
271: strlcpy(identity_file, buf, sizeof(identity_file));
272: have_identity = 1;
1.7 markus 273: }
274:
1.252 djm 275: static struct sshkey *
1.61 markus 276: load_identity(char *filename)
1.19 markus 277: {
1.52 markus 278: char *pass;
1.252 djm 279: struct sshkey *prv;
280: int r;
1.52 markus 281:
1.252 djm 282: if ((r = sshkey_load_private(filename, "", &prv, NULL)) == 0)
283: return prv;
284: if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
285: fatal("Load key \"%s\": %s", filename, ssh_err(r));
286: if (identity_passphrase)
287: pass = xstrdup(identity_passphrase);
288: else
289: pass = read_passphrase("Enter passphrase: ", RP_ALLOW_STDIN);
290: r = sshkey_load_private(filename, pass, &prv, NULL);
291: explicit_bzero(pass, strlen(pass));
292: free(pass);
293: if (r != 0)
294: fatal("Load key \"%s\": %s", filename, ssh_err(r));
1.52 markus 295: return prv;
1.19 markus 296: }
297:
1.32 markus 298: #define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
1.100 deraadt 299: #define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
1.32 markus 300: #define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
1.42 stevesk 301: #define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
1.19 markus 302:
1.246 markus 303: #ifdef WITH_OPENSSL
1.63 itojun 304: static void
1.252 djm 305: do_convert_to_ssh2(struct passwd *pw, struct sshkey *k)
1.19 markus 306: {
1.252 djm 307: size_t len;
1.36 markus 308: u_char *blob;
1.176 djm 309: char comment[61];
1.252 djm 310: int r;
1.19 markus 311:
1.269 djm 312: if ((r = sshkey_to_blob(k, &blob, &len)) != 0)
313: fatal("key_to_blob failed: %s", ssh_err(r));
1.176 djm 314: /* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
315: snprintf(comment, sizeof(comment),
316: "%u-bit %s, converted by %s@%s from OpenSSH",
1.252 djm 317: sshkey_size(k), sshkey_type(k),
1.19 markus 318: pw->pw_name, hostname);
1.176 djm 319:
320: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
321: fprintf(stdout, "Comment: \"%s\"\n", comment);
1.19 markus 322: dump_base64(stdout, blob, len);
1.32 markus 323: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
1.252 djm 324: sshkey_free(k);
1.227 djm 325: free(blob);
1.19 markus 326: exit(0);
327: }
328:
1.63 itojun 329: static void
1.252 djm 330: do_convert_to_pkcs8(struct sshkey *k)
1.193 djm 331: {
1.252 djm 332: switch (sshkey_type_plain(k->type)) {
1.193 djm 333: case KEY_RSA:
334: if (!PEM_write_RSA_PUBKEY(stdout, k->rsa))
335: fatal("PEM_write_RSA_PUBKEY failed");
336: break;
337: case KEY_DSA:
338: if (!PEM_write_DSA_PUBKEY(stdout, k->dsa))
339: fatal("PEM_write_DSA_PUBKEY failed");
340: break;
1.200 djm 341: case KEY_ECDSA:
342: if (!PEM_write_EC_PUBKEY(stdout, k->ecdsa))
343: fatal("PEM_write_EC_PUBKEY failed");
344: break;
1.193 djm 345: default:
1.252 djm 346: fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
1.193 djm 347: }
348: exit(0);
349: }
350:
351: static void
1.252 djm 352: do_convert_to_pem(struct sshkey *k)
1.193 djm 353: {
1.252 djm 354: switch (sshkey_type_plain(k->type)) {
1.193 djm 355: case KEY_RSA:
356: if (!PEM_write_RSAPublicKey(stdout, k->rsa))
357: fatal("PEM_write_RSAPublicKey failed");
358: break;
359: #if notyet /* OpenSSH 0.9.8 lacks this function */
360: case KEY_DSA:
361: if (!PEM_write_DSAPublicKey(stdout, k->dsa))
362: fatal("PEM_write_DSAPublicKey failed");
363: break;
364: #endif
1.200 djm 365: /* XXX ECDSA? */
1.193 djm 366: default:
1.252 djm 367: fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
1.193 djm 368: }
369: exit(0);
370: }
371:
372: static void
373: do_convert_to(struct passwd *pw)
374: {
1.252 djm 375: struct sshkey *k;
1.193 djm 376: struct stat st;
1.252 djm 377: int r;
1.193 djm 378:
379: if (!have_identity)
380: ask_filename(pw, "Enter file in which the key is");
381: if (stat(identity_file, &st) < 0)
382: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.252 djm 383: if ((r = sshkey_load_public(identity_file, &k, NULL)) != 0)
384: k = load_identity(identity_file);
1.193 djm 385: switch (convert_format) {
386: case FMT_RFC4716:
387: do_convert_to_ssh2(pw, k);
388: break;
389: case FMT_PKCS8:
390: do_convert_to_pkcs8(k);
391: break;
392: case FMT_PEM:
393: do_convert_to_pem(k);
394: break;
395: default:
396: fatal("%s: unknown key format %d", __func__, convert_format);
397: }
398: exit(0);
399: }
400:
1.252 djm 401: /*
402: * This is almost exactly the bignum1 encoding, but with 32 bit for length
403: * instead of 16.
404: */
1.193 djm 405: static void
1.252 djm 406: buffer_get_bignum_bits(struct sshbuf *b, BIGNUM *value)
1.32 markus 407: {
1.252 djm 408: u_int bytes, bignum_bits;
409: int r;
1.53 markus 410:
1.252 djm 411: if ((r = sshbuf_get_u32(b, &bignum_bits)) != 0)
412: fatal("%s: buffer error: %s", __func__, ssh_err(r));
413: bytes = (bignum_bits + 7) / 8;
414: if (sshbuf_len(b) < bytes)
415: fatal("%s: input buffer too small: need %d have %zu",
416: __func__, bytes, sshbuf_len(b));
417: if (BN_bin2bn(sshbuf_ptr(b), bytes, value) == NULL)
418: fatal("%s: BN_bin2bn failed", __func__);
419: if ((r = sshbuf_consume(b, bytes)) != 0)
420: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.32 markus 421: }
422:
1.252 djm 423: static struct sshkey *
1.93 markus 424: do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
1.32 markus 425: {
1.252 djm 426: struct sshbuf *b;
427: struct sshkey *key = NULL;
1.64 markus 428: char *type, *cipher;
1.252 djm 429: u_char e1, e2, e3, *sig = NULL, data[] = "abcde12345";
430: int r, rlen, ktype;
431: u_int magic, i1, i2, i3, i4;
432: size_t slen;
1.62 markus 433: u_long e;
1.32 markus 434:
1.252 djm 435: if ((b = sshbuf_from(blob, blen)) == NULL)
436: fatal("%s: sshbuf_from failed", __func__);
437: if ((r = sshbuf_get_u32(b, &magic)) != 0)
438: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.32 markus 439:
440: if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
1.252 djm 441: error("bad magic 0x%x != 0x%x", magic,
442: SSH_COM_PRIVATE_KEY_MAGIC);
443: sshbuf_free(b);
1.32 markus 444: return NULL;
445: }
1.252 djm 446: if ((r = sshbuf_get_u32(b, &i1)) != 0 ||
447: (r = sshbuf_get_cstring(b, &type, NULL)) != 0 ||
448: (r = sshbuf_get_cstring(b, &cipher, NULL)) != 0 ||
449: (r = sshbuf_get_u32(b, &i2)) != 0 ||
450: (r = sshbuf_get_u32(b, &i3)) != 0 ||
451: (r = sshbuf_get_u32(b, &i4)) != 0)
452: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.158 stevesk 453: debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
1.32 markus 454: if (strcmp(cipher, "none") != 0) {
455: error("unsupported cipher %s", cipher);
1.227 djm 456: free(cipher);
1.252 djm 457: sshbuf_free(b);
1.227 djm 458: free(type);
1.32 markus 459: return NULL;
460: }
1.227 djm 461: free(cipher);
1.32 markus 462:
1.53 markus 463: if (strstr(type, "dsa")) {
464: ktype = KEY_DSA;
465: } else if (strstr(type, "rsa")) {
466: ktype = KEY_RSA;
467: } else {
1.252 djm 468: sshbuf_free(b);
1.227 djm 469: free(type);
1.32 markus 470: return NULL;
471: }
1.252 djm 472: if ((key = sshkey_new_private(ktype)) == NULL)
473: fatal("key_new_private failed");
1.227 djm 474: free(type);
1.53 markus 475:
476: switch (key->type) {
477: case KEY_DSA:
1.252 djm 478: buffer_get_bignum_bits(b, key->dsa->p);
479: buffer_get_bignum_bits(b, key->dsa->g);
480: buffer_get_bignum_bits(b, key->dsa->q);
481: buffer_get_bignum_bits(b, key->dsa->pub_key);
482: buffer_get_bignum_bits(b, key->dsa->priv_key);
1.53 markus 483: break;
484: case KEY_RSA:
1.252 djm 485: if ((r = sshbuf_get_u8(b, &e1)) != 0 ||
486: (e1 < 30 && (r = sshbuf_get_u8(b, &e2)) != 0) ||
487: (e1 < 30 && (r = sshbuf_get_u8(b, &e3)) != 0))
488: fatal("%s: buffer error: %s", __func__, ssh_err(r));
489: e = e1;
1.62 markus 490: debug("e %lx", e);
491: if (e < 30) {
492: e <<= 8;
1.252 djm 493: e += e2;
1.62 markus 494: debug("e %lx", e);
495: e <<= 8;
1.252 djm 496: e += e3;
1.62 markus 497: debug("e %lx", e);
498: }
499: if (!BN_set_word(key->rsa->e, e)) {
1.252 djm 500: sshbuf_free(b);
501: sshkey_free(key);
1.53 markus 502: return NULL;
503: }
1.252 djm 504: buffer_get_bignum_bits(b, key->rsa->d);
505: buffer_get_bignum_bits(b, key->rsa->n);
506: buffer_get_bignum_bits(b, key->rsa->iqmp);
507: buffer_get_bignum_bits(b, key->rsa->q);
508: buffer_get_bignum_bits(b, key->rsa->p);
509: if ((r = rsa_generate_additional_parameters(key->rsa)) != 0)
510: fatal("generate RSA parameters failed: %s", ssh_err(r));
1.53 markus 511: break;
512: }
1.252 djm 513: rlen = sshbuf_len(b);
1.85 deraadt 514: if (rlen != 0)
1.53 markus 515: error("do_convert_private_ssh2_from_blob: "
516: "remaining bytes in key blob %d", rlen);
1.252 djm 517: sshbuf_free(b);
1.64 markus 518:
519: /* try the key */
1.285 markus 520: if (sshkey_sign(key, &sig, &slen, data, sizeof(data), NULL, 0) != 0 ||
1.252 djm 521: sshkey_verify(key, sig, slen, data, sizeof(data), 0) != 0) {
522: sshkey_free(key);
523: free(sig);
524: return NULL;
525: }
1.227 djm 526: free(sig);
1.32 markus 527: return key;
528: }
529:
1.137 dtucker 530: static int
531: get_line(FILE *fp, char *line, size_t len)
532: {
533: int c;
534: size_t pos = 0;
535:
536: line[0] = '\0';
537: while ((c = fgetc(fp)) != EOF) {
1.269 djm 538: if (pos >= len - 1)
539: fatal("input line too long.");
1.140 deraadt 540: switch (c) {
1.137 dtucker 541: case '\r':
542: c = fgetc(fp);
1.269 djm 543: if (c != EOF && c != '\n' && ungetc(c, fp) == EOF)
544: fatal("unget: %s", strerror(errno));
1.137 dtucker 545: return pos;
546: case '\n':
547: return pos;
548: }
549: line[pos++] = c;
550: line[pos] = '\0';
551: }
1.157 stevesk 552: /* We reached EOF */
553: return -1;
1.137 dtucker 554: }
555:
1.63 itojun 556: static void
1.252 djm 557: do_convert_from_ssh2(struct passwd *pw, struct sshkey **k, int *private)
1.19 markus 558: {
1.252 djm 559: int r, blen, escaped = 0;
1.98 markus 560: u_int len;
1.137 dtucker 561: char line[1024];
1.80 stevesk 562: u_char blob[8096];
1.19 markus 563: char encoded[8096];
564: FILE *fp;
565:
1.191 djm 566: if ((fp = fopen(identity_file, "r")) == NULL)
567: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.19 markus 568: encoded[0] = '\0';
1.137 dtucker 569: while ((blen = get_line(fp, line, sizeof(line))) != -1) {
1.228 djm 570: if (blen > 0 && line[blen - 1] == '\\')
1.25 markus 571: escaped++;
1.19 markus 572: if (strncmp(line, "----", 4) == 0 ||
573: strstr(line, ": ") != NULL) {
1.32 markus 574: if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
1.193 djm 575: *private = 1;
1.64 markus 576: if (strstr(line, " END ") != NULL) {
577: break;
578: }
1.60 markus 579: /* fprintf(stderr, "ignore: %s", line); */
1.19 markus 580: continue;
581: }
1.25 markus 582: if (escaped) {
583: escaped--;
1.60 markus 584: /* fprintf(stderr, "escaped: %s", line); */
1.25 markus 585: continue;
1.19 markus 586: }
587: strlcat(encoded, line, sizeof(encoded));
588: }
1.98 markus 589: len = strlen(encoded);
590: if (((len % 4) == 3) &&
591: (encoded[len-1] == '=') &&
592: (encoded[len-2] == '=') &&
593: (encoded[len-3] == '='))
594: encoded[len-3] = '\0';
1.91 stevesk 595: blen = uudecode(encoded, blob, sizeof(blob));
1.269 djm 596: if (blen < 0)
597: fatal("uudecode failed.");
1.252 djm 598: if (*private)
599: *k = do_convert_private_ssh2_from_blob(blob, blen);
1.269 djm 600: else if ((r = sshkey_from_blob(blob, blen, k)) != 0)
601: fatal("decode blob failed: %s", ssh_err(r));
1.193 djm 602: fclose(fp);
603: }
604:
605: static void
1.252 djm 606: do_convert_from_pkcs8(struct sshkey **k, int *private)
1.193 djm 607: {
608: EVP_PKEY *pubkey;
609: FILE *fp;
610:
611: if ((fp = fopen(identity_file, "r")) == NULL)
612: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
613: if ((pubkey = PEM_read_PUBKEY(fp, NULL, NULL, NULL)) == NULL) {
614: fatal("%s: %s is not a recognised public key format", __func__,
615: identity_file);
616: }
617: fclose(fp);
618: switch (EVP_PKEY_type(pubkey->type)) {
619: case EVP_PKEY_RSA:
1.252 djm 620: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
621: fatal("sshkey_new failed");
1.193 djm 622: (*k)->type = KEY_RSA;
623: (*k)->rsa = EVP_PKEY_get1_RSA(pubkey);
624: break;
625: case EVP_PKEY_DSA:
1.252 djm 626: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
627: fatal("sshkey_new failed");
1.193 djm 628: (*k)->type = KEY_DSA;
629: (*k)->dsa = EVP_PKEY_get1_DSA(pubkey);
630: break;
1.200 djm 631: case EVP_PKEY_EC:
1.252 djm 632: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
633: fatal("sshkey_new failed");
1.200 djm 634: (*k)->type = KEY_ECDSA;
635: (*k)->ecdsa = EVP_PKEY_get1_EC_KEY(pubkey);
1.252 djm 636: (*k)->ecdsa_nid = sshkey_ecdsa_key_to_nid((*k)->ecdsa);
1.200 djm 637: break;
1.193 djm 638: default:
639: fatal("%s: unsupported pubkey type %d", __func__,
640: EVP_PKEY_type(pubkey->type));
641: }
642: EVP_PKEY_free(pubkey);
643: return;
644: }
645:
646: static void
1.252 djm 647: do_convert_from_pem(struct sshkey **k, int *private)
1.193 djm 648: {
649: FILE *fp;
650: RSA *rsa;
651: #ifdef notyet
652: DSA *dsa;
653: #endif
654:
655: if ((fp = fopen(identity_file, "r")) == NULL)
656: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
657: if ((rsa = PEM_read_RSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
1.252 djm 658: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
659: fatal("sshkey_new failed");
1.193 djm 660: (*k)->type = KEY_RSA;
661: (*k)->rsa = rsa;
662: fclose(fp);
663: return;
664: }
665: #if notyet /* OpenSSH 0.9.8 lacks this function */
666: rewind(fp);
667: if ((dsa = PEM_read_DSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
1.252 djm 668: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
669: fatal("sshkey_new failed");
1.193 djm 670: (*k)->type = KEY_DSA;
671: (*k)->dsa = dsa;
672: fclose(fp);
673: return;
674: }
1.200 djm 675: /* XXX ECDSA */
1.193 djm 676: #endif
677: fatal("%s: unrecognised raw private key format", __func__);
678: }
679:
680: static void
681: do_convert_from(struct passwd *pw)
682: {
1.252 djm 683: struct sshkey *k = NULL;
684: int r, private = 0, ok = 0;
1.193 djm 685: struct stat st;
686:
687: if (!have_identity)
688: ask_filename(pw, "Enter file in which the key is");
689: if (stat(identity_file, &st) < 0)
690: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
691:
692: switch (convert_format) {
693: case FMT_RFC4716:
694: do_convert_from_ssh2(pw, &k, &private);
695: break;
696: case FMT_PKCS8:
697: do_convert_from_pkcs8(&k, &private);
698: break;
699: case FMT_PEM:
700: do_convert_from_pem(&k, &private);
701: break;
702: default:
703: fatal("%s: unknown key format %d", __func__, convert_format);
704: }
705:
1.260 djm 706: if (!private) {
1.252 djm 707: if ((r = sshkey_write(k, stdout)) == 0)
708: ok = 1;
1.193 djm 709: if (ok)
710: fprintf(stdout, "\n");
1.260 djm 711: } else {
1.193 djm 712: switch (k->type) {
713: case KEY_DSA:
714: ok = PEM_write_DSAPrivateKey(stdout, k->dsa, NULL,
715: NULL, 0, NULL, NULL);
716: break;
1.200 djm 717: case KEY_ECDSA:
718: ok = PEM_write_ECPrivateKey(stdout, k->ecdsa, NULL,
719: NULL, 0, NULL, NULL);
720: break;
1.193 djm 721: case KEY_RSA:
722: ok = PEM_write_RSAPrivateKey(stdout, k->rsa, NULL,
723: NULL, 0, NULL, NULL);
724: break;
725: default:
726: fatal("%s: unsupported key type %s", __func__,
1.252 djm 727: sshkey_type(k));
1.193 djm 728: }
729: }
730:
1.269 djm 731: if (!ok)
732: fatal("key write failed");
1.252 djm 733: sshkey_free(k);
1.19 markus 734: exit(0);
735: }
1.246 markus 736: #endif
1.19 markus 737:
1.63 itojun 738: static void
1.19 markus 739: do_print_public(struct passwd *pw)
740: {
1.252 djm 741: struct sshkey *prv;
1.19 markus 742: struct stat st;
1.252 djm 743: int r;
1.19 markus 744:
745: if (!have_identity)
746: ask_filename(pw, "Enter file in which the key is");
1.269 djm 747: if (stat(identity_file, &st) < 0)
748: fatal("%s: %s", identity_file, strerror(errno));
1.61 markus 749: prv = load_identity(identity_file);
1.252 djm 750: if ((r = sshkey_write(prv, stdout)) != 0)
1.269 djm 751: error("key_write failed: %s", ssh_err(r));
1.252 djm 752: sshkey_free(prv);
1.19 markus 753: fprintf(stdout, "\n");
754: exit(0);
755: }
756:
1.66 markus 757: static void
1.197 djm 758: do_download(struct passwd *pw)
1.75 markus 759: {
1.177 markus 760: #ifdef ENABLE_PKCS11
1.252 djm 761: struct sshkey **keys = NULL;
1.177 markus 762: int i, nkeys;
1.252 djm 763: enum sshkey_fp_rep rep;
1.251 djm 764: int fptype;
1.221 djm 765: char *fp, *ra;
1.222 djm 766:
1.251 djm 767: fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
768: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
1.75 markus 769:
1.177 markus 770: pkcs11_init(0);
771: nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys);
772: if (nkeys <= 0)
773: fatal("cannot read public key from pkcs11");
774: for (i = 0; i < nkeys; i++) {
1.221 djm 775: if (print_fingerprint) {
1.252 djm 776: fp = sshkey_fingerprint(keys[i], fptype, rep);
777: ra = sshkey_fingerprint(keys[i], fingerprint_hash,
1.221 djm 778: SSH_FP_RANDOMART);
1.259 djm 779: if (fp == NULL || ra == NULL)
780: fatal("%s: sshkey_fingerprint fail", __func__);
1.252 djm 781: printf("%u %s %s (PKCS11 key)\n", sshkey_size(keys[i]),
782: fp, sshkey_type(keys[i]));
1.221 djm 783: if (log_level >= SYSLOG_LEVEL_VERBOSE)
784: printf("%s\n", ra);
1.227 djm 785: free(ra);
786: free(fp);
1.221 djm 787: } else {
1.252 djm 788: (void) sshkey_write(keys[i], stdout); /* XXX check */
1.221 djm 789: fprintf(stdout, "\n");
790: }
1.252 djm 791: sshkey_free(keys[i]);
1.97 markus 792: }
1.227 djm 793: free(keys);
1.177 markus 794: pkcs11_terminate();
1.75 markus 795: exit(0);
1.177 markus 796: #else
797: fatal("no pkcs11 support");
798: #endif /* ENABLE_PKCS11 */
1.75 markus 799: }
1.66 markus 800:
1.279 djm 801: static struct sshkey *
802: try_read_key(char **cpp)
803: {
804: struct sshkey *ret;
805: int r;
806:
807: if ((ret = sshkey_new(KEY_UNSPEC)) == NULL)
808: fatal("sshkey_new failed");
809: if ((r = sshkey_read(ret, cpp)) == 0)
810: return ret;
811: /* Not a key */
812: sshkey_free(ret);
813: return NULL;
814: }
815:
1.63 itojun 816: static void
1.279 djm 817: fingerprint_one_key(const struct sshkey *public, const char *comment)
1.8 markus 818: {
1.279 djm 819: char *fp = NULL, *ra = NULL;
1.252 djm 820: enum sshkey_fp_rep rep;
1.251 djm 821: int fptype;
1.12 markus 822:
1.251 djm 823: fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
824: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
1.279 djm 825: fp = sshkey_fingerprint(public, fptype, rep);
826: ra = sshkey_fingerprint(public, fingerprint_hash, SSH_FP_RANDOMART);
827: if (fp == NULL || ra == NULL)
828: fatal("%s: sshkey_fingerprint failed", __func__);
1.294 djm 829: mprintf("%u %s %s (%s)\n", sshkey_size(public), fp,
1.279 djm 830: comment ? comment : "no comment", sshkey_type(public));
831: if (log_level >= SYSLOG_LEVEL_VERBOSE)
832: printf("%s\n", ra);
833: free(ra);
834: free(fp);
835: }
836:
837: static void
838: fingerprint_private(const char *path)
839: {
840: struct stat st;
841: char *comment = NULL;
842: struct sshkey *public = NULL;
843: int r;
844:
845: if (stat(identity_file, &st) < 0)
846: fatal("%s: %s", path, strerror(errno));
1.280 djm 847: if ((r = sshkey_load_public(path, &public, &comment)) != 0) {
848: debug("load public \"%s\": %s", path, ssh_err(r));
849: if ((r = sshkey_load_private(path, NULL,
850: &public, &comment)) != 0) {
851: debug("load private \"%s\": %s", path, ssh_err(r));
852: fatal("%s is not a key file.", path);
853: }
854: }
855:
1.279 djm 856: fingerprint_one_key(public, comment);
857: sshkey_free(public);
858: free(comment);
859: }
860:
861: static void
862: do_fingerprint(struct passwd *pw)
863: {
864: FILE *f;
865: struct sshkey *public = NULL;
1.287 djm 866: char *comment = NULL, *cp, *ep, line[SSH_MAX_PUBKEY_BYTES];
1.279 djm 867: int i, invalid = 1;
868: const char *path;
1.289 djm 869: u_long lnum = 0;
1.279 djm 870:
1.12 markus 871: if (!have_identity)
872: ask_filename(pw, "Enter file in which the key is");
1.279 djm 873: path = identity_file;
1.15 markus 874:
1.279 djm 875: if (strcmp(identity_file, "-") == 0) {
876: f = stdin;
877: path = "(stdin)";
878: } else if ((f = fopen(path, "r")) == NULL)
879: fatal("%s: %s: %s", __progname, path, strerror(errno));
880:
881: while (read_keyfile_line(f, path, line, sizeof(line), &lnum) == 0) {
882: cp = line;
883: cp[strcspn(cp, "\n")] = '\0';
884: /* Trim leading space and comments */
885: cp = line + strspn(line, " \t");
886: if (*cp == '#' || *cp == '\0')
887: continue;
1.191 djm 888:
1.279 djm 889: /*
890: * Input may be plain keys, private keys, authorized_keys
891: * or known_hosts.
892: */
893:
894: /*
895: * Try private keys first. Assume a key is private if
896: * "SSH PRIVATE KEY" appears on the first line and we're
897: * not reading from stdin (XXX support private keys on stdin).
898: */
899: if (lnum == 1 && strcmp(identity_file, "-") != 0 &&
1.280 djm 900: strstr(cp, "PRIVATE KEY") != NULL) {
1.279 djm 901: fclose(f);
902: fingerprint_private(path);
903: exit(0);
904: }
905:
906: /*
907: * If it's not a private key, then this must be prepared to
908: * accept a public key prefixed with a hostname or options.
909: * Try a bare key first, otherwise skip the leading stuff.
910: */
911: if ((public = try_read_key(&cp)) == NULL) {
912: i = strtol(cp, &ep, 10);
913: if (i == 0 || ep == NULL ||
914: (*ep != ' ' && *ep != '\t')) {
915: int quoted = 0;
916:
917: comment = cp;
918: for (; *cp && (quoted || (*cp != ' ' &&
919: *cp != '\t')); cp++) {
920: if (*cp == '\\' && cp[1] == '"')
921: cp++; /* Skip both */
922: else if (*cp == '"')
923: quoted = !quoted;
924: }
925: if (!*cp)
926: continue;
927: *cp++ = '\0';
928: }
1.191 djm 929: }
1.279 djm 930: /* Retry after parsing leading hostname/key options */
931: if (public == NULL && (public = try_read_key(&cp)) == NULL) {
1.289 djm 932: debug("%s:%lu: not a public key", path, lnum);
1.191 djm 933: continue;
934: }
935:
1.279 djm 936: /* Find trailing comment, if any */
937: for (; *cp == ' ' || *cp == '\t'; cp++)
1.191 djm 938: ;
1.279 djm 939: if (*cp != '\0' && *cp != '#')
1.191 djm 940: comment = cp;
1.279 djm 941:
942: fingerprint_one_key(public, comment);
1.252 djm 943: sshkey_free(public);
1.279 djm 944: invalid = 0; /* One good key in the file is sufficient */
1.15 markus 945: }
1.191 djm 946: fclose(f);
947:
1.269 djm 948: if (invalid)
1.279 djm 949: fatal("%s is not a public key file.", path);
1.12 markus 950: exit(0);
1.8 markus 951: }
952:
1.119 djm 953: static void
1.206 stevesk 954: do_gen_all_hostkeys(struct passwd *pw)
955: {
956: struct {
957: char *key_type;
958: char *key_type_display;
959: char *path;
960: } key_types[] = {
1.267 djm 961: #ifdef WITH_OPENSSL
1.206 stevesk 962: { "rsa", "RSA" ,_PATH_HOST_RSA_KEY_FILE },
963: { "dsa", "DSA", _PATH_HOST_DSA_KEY_FILE },
964: { "ecdsa", "ECDSA",_PATH_HOST_ECDSA_KEY_FILE },
1.267 djm 965: #endif /* WITH_OPENSSL */
1.238 markus 966: { "ed25519", "ED25519",_PATH_HOST_ED25519_KEY_FILE },
1.206 stevesk 967: { NULL, NULL, NULL }
968: };
969:
970: int first = 0;
971: struct stat st;
1.252 djm 972: struct sshkey *private, *public;
1.206 stevesk 973: char comment[1024];
1.252 djm 974: int i, type, fd, r;
1.206 stevesk 975: FILE *f;
976:
977: for (i = 0; key_types[i].key_type; i++) {
978: if (stat(key_types[i].path, &st) == 0)
979: continue;
980: if (errno != ENOENT) {
1.269 djm 981: error("Could not stat %s: %s", key_types[i].path,
1.206 stevesk 982: strerror(errno));
983: first = 0;
984: continue;
985: }
986:
987: if (first == 0) {
988: first = 1;
989: printf("%s: generating new host keys: ", __progname);
990: }
991: printf("%s ", key_types[i].key_type_display);
992: fflush(stdout);
1.252 djm 993: type = sshkey_type_from_name(key_types[i].key_type);
1.206 stevesk 994: strlcpy(identity_file, key_types[i].path, sizeof(identity_file));
995: bits = 0;
1.255 djm 996: type_bits_valid(type, NULL, &bits);
1.252 djm 997: if ((r = sshkey_generate(type, bits, &private)) != 0) {
1.269 djm 998: error("key_generate failed: %s", ssh_err(r));
1.206 stevesk 999: first = 0;
1000: continue;
1001: }
1.252 djm 1002: if ((r = sshkey_from_private(private, &public)) != 0)
1003: fatal("sshkey_from_private failed: %s", ssh_err(r));
1.206 stevesk 1004: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name,
1005: hostname);
1.252 djm 1006: if ((r = sshkey_save_private(private, identity_file, "",
1007: comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 1008: error("Saving key \"%s\" failed: %s",
1009: identity_file, ssh_err(r));
1.252 djm 1010: sshkey_free(private);
1011: sshkey_free(public);
1.206 stevesk 1012: first = 0;
1013: continue;
1014: }
1.252 djm 1015: sshkey_free(private);
1.206 stevesk 1016: strlcat(identity_file, ".pub", sizeof(identity_file));
1017: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1018: if (fd == -1) {
1.269 djm 1019: error("Could not save your public key in %s",
1.206 stevesk 1020: identity_file);
1.252 djm 1021: sshkey_free(public);
1.206 stevesk 1022: first = 0;
1023: continue;
1024: }
1025: f = fdopen(fd, "w");
1026: if (f == NULL) {
1.269 djm 1027: error("fdopen %s failed", identity_file);
1.250 doug 1028: close(fd);
1.252 djm 1029: sshkey_free(public);
1.206 stevesk 1030: first = 0;
1031: continue;
1032: }
1.254 djm 1033: if ((r = sshkey_write(public, f)) != 0) {
1.269 djm 1034: error("write key failed: %s", ssh_err(r));
1.250 doug 1035: fclose(f);
1.252 djm 1036: sshkey_free(public);
1.206 stevesk 1037: first = 0;
1038: continue;
1039: }
1040: fprintf(f, " %s\n", comment);
1041: fclose(f);
1.252 djm 1042: sshkey_free(public);
1.206 stevesk 1043:
1044: }
1045: if (first != 0)
1046: printf("\n");
1047: }
1048:
1.256 djm 1049: struct known_hosts_ctx {
1.257 djm 1050: const char *host; /* Hostname searched for in find/delete case */
1051: FILE *out; /* Output file, stdout for find_hosts case */
1052: int has_unhashed; /* When hashing, original had unhashed hosts */
1053: int found_key; /* For find/delete, host was found */
1054: int invalid; /* File contained invalid items; don't delete */
1.256 djm 1055: };
1056:
1057: static int
1058: known_hosts_hash(struct hostkey_foreach_line *l, void *_ctx)
1.119 djm 1059: {
1.256 djm 1060: struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
1061: char *hashed, *cp, *hosts, *ohosts;
1062: int has_wild = l->hosts && strcspn(l->hosts, "*?!") != strlen(l->hosts);
1.298 dtucker 1063: int was_hashed = l->hosts && l->hosts[0] == HASH_DELIM;
1.256 djm 1064:
1.262 djm 1065: switch (l->status) {
1066: case HKF_STATUS_OK:
1067: case HKF_STATUS_MATCHED:
1068: /*
1069: * Don't hash hosts already already hashed, with wildcard
1070: * characters or a CA/revocation marker.
1071: */
1.296 djm 1072: if (was_hashed || has_wild || l->marker != MRK_NONE) {
1.262 djm 1073: fprintf(ctx->out, "%s\n", l->line);
1074: if (has_wild && !find_host) {
1.297 dtucker 1075: logit("%s:%lu: ignoring host name "
1.269 djm 1076: "with wildcard: %.64s", l->path,
1.262 djm 1077: l->linenum, l->hosts);
1078: }
1079: return 0;
1080: }
1081: /*
1082: * Split any comma-separated hostnames from the host list,
1083: * hash and store separately.
1084: */
1085: ohosts = hosts = xstrdup(l->hosts);
1086: while ((cp = strsep(&hosts, ",")) != NULL && *cp != '\0') {
1.299 djm 1087: lowercase(cp);
1.262 djm 1088: if ((hashed = host_hash(cp, NULL, 0)) == NULL)
1089: fatal("hash_host failed");
1090: fprintf(ctx->out, "%s %s\n", hashed, l->rawkey);
1091: ctx->has_unhashed = 1;
1092: }
1093: free(ohosts);
1094: return 0;
1095: case HKF_STATUS_INVALID:
1096: /* Retain invalid lines, but mark file as invalid. */
1.256 djm 1097: ctx->invalid = 1;
1.297 dtucker 1098: logit("%s:%lu: invalid line", l->path, l->linenum);
1.262 djm 1099: /* FALLTHROUGH */
1100: default:
1.256 djm 1101: fprintf(ctx->out, "%s\n", l->line);
1102: return 0;
1103: }
1.262 djm 1104: /* NOTREACHED */
1105: return -1;
1.256 djm 1106: }
1107:
1108: static int
1109: known_hosts_find_delete(struct hostkey_foreach_line *l, void *_ctx)
1110: {
1111: struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
1.272 djm 1112: enum sshkey_fp_rep rep;
1113: int fptype;
1114: char *fp;
1115:
1116: fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
1117: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
1.256 djm 1118:
1.262 djm 1119: if (l->status == HKF_STATUS_MATCHED) {
1.256 djm 1120: if (delete_host) {
1121: if (l->marker != MRK_NONE) {
1122: /* Don't remove CA and revocation lines */
1123: fprintf(ctx->out, "%s\n", l->line);
1124: } else {
1125: /*
1126: * Hostname matches and has no CA/revoke
1127: * marker, delete it by *not* writing the
1128: * line to ctx->out.
1129: */
1130: ctx->found_key = 1;
1131: if (!quiet)
1.297 dtucker 1132: printf("# Host %s found: line %lu\n",
1.256 djm 1133: ctx->host, l->linenum);
1134: }
1135: return 0;
1136: } else if (find_host) {
1137: ctx->found_key = 1;
1138: if (!quiet) {
1.297 dtucker 1139: printf("# Host %s found: line %lu %s\n",
1.256 djm 1140: ctx->host,
1141: l->linenum, l->marker == MRK_CA ? "CA" :
1142: (l->marker == MRK_REVOKE ? "REVOKED" : ""));
1143: }
1144: if (hash_hosts)
1145: known_hosts_hash(l, ctx);
1.272 djm 1146: else if (print_fingerprint) {
1147: fp = sshkey_fingerprint(l->key, fptype, rep);
1.294 djm 1148: mprintf("%s %s %s %s\n", ctx->host,
1.272 djm 1149: sshkey_type(l->key), fp, l->comment);
1150: free(fp);
1151: } else
1.256 djm 1152: fprintf(ctx->out, "%s\n", l->line);
1153: return 0;
1154: }
1155: } else if (delete_host) {
1156: /* Retain non-matching hosts when deleting */
1157: if (l->status == HKF_STATUS_INVALID) {
1158: ctx->invalid = 1;
1.297 dtucker 1159: logit("%s:%lu: invalid line", l->path, l->linenum);
1.256 djm 1160: }
1161: fprintf(ctx->out, "%s\n", l->line);
1.166 djm 1162: }
1.256 djm 1163: return 0;
1.119 djm 1164: }
1165:
1166: static void
1167: do_known_hosts(struct passwd *pw, const char *name)
1168: {
1.258 deraadt 1169: char *cp, tmp[PATH_MAX], old[PATH_MAX];
1.257 djm 1170: int r, fd, oerrno, inplace = 0;
1.256 djm 1171: struct known_hosts_ctx ctx;
1.272 djm 1172: u_int foreach_options;
1.119 djm 1173:
1174: if (!have_identity) {
1175: cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
1176: if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
1177: sizeof(identity_file))
1178: fatal("Specified known hosts path too long");
1.227 djm 1179: free(cp);
1.119 djm 1180: have_identity = 1;
1181: }
1182:
1.256 djm 1183: memset(&ctx, 0, sizeof(ctx));
1184: ctx.out = stdout;
1185: ctx.host = name;
1186:
1.119 djm 1187: /*
1188: * Find hosts goes to stdout, hash and deletions happen in-place
1189: * A corner case is ssh-keygen -HF foo, which should go to stdout
1190: */
1191: if (!find_host && (hash_hosts || delete_host)) {
1192: if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
1193: strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
1194: strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
1195: strlcat(old, ".old", sizeof(old)) >= sizeof(old))
1196: fatal("known_hosts path too long");
1197: umask(077);
1.256 djm 1198: if ((fd = mkstemp(tmp)) == -1)
1.119 djm 1199: fatal("mkstemp: %s", strerror(errno));
1.256 djm 1200: if ((ctx.out = fdopen(fd, "w")) == NULL) {
1201: oerrno = errno;
1.119 djm 1202: unlink(tmp);
1.256 djm 1203: fatal("fdopen: %s", strerror(oerrno));
1.119 djm 1204: }
1.257 djm 1205: inplace = 1;
1.119 djm 1206: }
1207:
1.256 djm 1208: /* XXX support identity_file == "-" for stdin */
1.272 djm 1209: foreach_options = find_host ? HKF_WANT_MATCH : 0;
1210: foreach_options |= print_fingerprint ? HKF_WANT_PARSE_KEY : 0;
1.256 djm 1211: if ((r = hostkeys_foreach(identity_file,
1212: hash_hosts ? known_hosts_hash : known_hosts_find_delete, &ctx,
1.284 deraadt 1213: name, NULL, foreach_options)) != 0) {
1214: if (inplace)
1215: unlink(tmp);
1.256 djm 1216: fatal("%s: hostkeys_foreach failed: %s", __func__, ssh_err(r));
1.284 deraadt 1217: }
1.119 djm 1218:
1.257 djm 1219: if (inplace)
1.256 djm 1220: fclose(ctx.out);
1.119 djm 1221:
1.256 djm 1222: if (ctx.invalid) {
1.269 djm 1223: error("%s is not a valid known_hosts file.", identity_file);
1.257 djm 1224: if (inplace) {
1.269 djm 1225: error("Not replacing existing known_hosts "
1226: "file because of errors");
1.119 djm 1227: unlink(tmp);
1228: }
1229: exit(1);
1.256 djm 1230: } else if (delete_host && !ctx.found_key) {
1.269 djm 1231: logit("Host %s not found in %s", name, identity_file);
1.277 djm 1232: if (inplace)
1233: unlink(tmp);
1.257 djm 1234: } else if (inplace) {
1.119 djm 1235: /* Backup existing file */
1236: if (unlink(old) == -1 && errno != ENOENT)
1237: fatal("unlink %.100s: %s", old, strerror(errno));
1238: if (link(identity_file, old) == -1)
1239: fatal("link %.100s to %.100s: %s", identity_file, old,
1240: strerror(errno));
1241: /* Move new one into place */
1242: if (rename(tmp, identity_file) == -1) {
1243: error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
1244: strerror(errno));
1245: unlink(tmp);
1246: unlink(old);
1247: exit(1);
1248: }
1249:
1.269 djm 1250: printf("%s updated.\n", identity_file);
1251: printf("Original contents retained as %s\n", old);
1.256 djm 1252: if (ctx.has_unhashed) {
1.269 djm 1253: logit("WARNING: %s contains unhashed entries", old);
1254: logit("Delete this file to ensure privacy "
1255: "of hostnames");
1.119 djm 1256: }
1257: }
1258:
1.256 djm 1259: exit (find_host && !ctx.found_key);
1.119 djm 1260: }
1261:
1.13 deraadt 1262: /*
1263: * Perform changing a passphrase. The argument is the passwd structure
1264: * for the current user.
1265: */
1.63 itojun 1266: static void
1.7 markus 1267: do_change_passphrase(struct passwd *pw)
1268: {
1.12 markus 1269: char *comment;
1270: char *old_passphrase, *passphrase1, *passphrase2;
1271: struct stat st;
1.252 djm 1272: struct sshkey *private;
1273: int r;
1.12 markus 1274:
1275: if (!have_identity)
1276: ask_filename(pw, "Enter file in which the key is");
1.269 djm 1277: if (stat(identity_file, &st) < 0)
1278: fatal("%s: %s", identity_file, strerror(errno));
1.12 markus 1279: /* Try to load the file with empty passphrase. */
1.252 djm 1280: r = sshkey_load_private(identity_file, "", &private, &comment);
1281: if (r == SSH_ERR_KEY_WRONG_PASSPHRASE) {
1.12 markus 1282: if (identity_passphrase)
1283: old_passphrase = xstrdup(identity_passphrase);
1284: else
1.65 markus 1285: old_passphrase =
1286: read_passphrase("Enter old passphrase: ",
1287: RP_ALLOW_STDIN);
1.252 djm 1288: r = sshkey_load_private(identity_file, old_passphrase,
1289: &private, &comment);
1.240 djm 1290: explicit_bzero(old_passphrase, strlen(old_passphrase));
1.227 djm 1291: free(old_passphrase);
1.252 djm 1292: if (r != 0)
1293: goto badkey;
1294: } else if (r != 0) {
1295: badkey:
1.269 djm 1296: fatal("Failed to load key %s: %s", identity_file, ssh_err(r));
1.12 markus 1297: }
1.266 djm 1298: if (comment)
1.294 djm 1299: mprintf("Key has comment '%s'\n", comment);
1.12 markus 1300:
1301: /* Ask the new passphrase (twice). */
1302: if (identity_new_passphrase) {
1303: passphrase1 = xstrdup(identity_new_passphrase);
1304: passphrase2 = NULL;
1305: } else {
1306: passphrase1 =
1.65 markus 1307: read_passphrase("Enter new passphrase (empty for no "
1308: "passphrase): ", RP_ALLOW_STDIN);
1309: passphrase2 = read_passphrase("Enter same passphrase again: ",
1.86 deraadt 1310: RP_ALLOW_STDIN);
1.12 markus 1311:
1312: /* Verify that they are the same. */
1313: if (strcmp(passphrase1, passphrase2) != 0) {
1.240 djm 1314: explicit_bzero(passphrase1, strlen(passphrase1));
1315: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 1316: free(passphrase1);
1317: free(passphrase2);
1.12 markus 1318: printf("Pass phrases do not match. Try again.\n");
1319: exit(1);
1320: }
1321: /* Destroy the other copy. */
1.240 djm 1322: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 1323: free(passphrase2);
1.12 markus 1324: }
1325:
1326: /* Save the file using the new passphrase. */
1.252 djm 1327: if ((r = sshkey_save_private(private, identity_file, passphrase1,
1328: comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 1329: error("Saving key \"%s\" failed: %s.",
1.252 djm 1330: identity_file, ssh_err(r));
1.240 djm 1331: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 1332: free(passphrase1);
1.252 djm 1333: sshkey_free(private);
1.227 djm 1334: free(comment);
1.12 markus 1335: exit(1);
1336: }
1337: /* Destroy the passphrase and the copy of the key in memory. */
1.240 djm 1338: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 1339: free(passphrase1);
1.252 djm 1340: sshkey_free(private); /* Destroys contents */
1.227 djm 1341: free(comment);
1.1 deraadt 1342:
1.12 markus 1343: printf("Your identification has been saved with the new passphrase.\n");
1344: exit(0);
1.1 deraadt 1345: }
1346:
1.105 jakob 1347: /*
1348: * Print the SSHFP RR.
1349: */
1.138 jakob 1350: static int
1351: do_print_resource_record(struct passwd *pw, char *fname, char *hname)
1.105 jakob 1352: {
1.252 djm 1353: struct sshkey *public;
1.105 jakob 1354: char *comment = NULL;
1355: struct stat st;
1.252 djm 1356: int r;
1.105 jakob 1357:
1.138 jakob 1358: if (fname == NULL)
1.229 djm 1359: fatal("%s: no filename", __func__);
1.138 jakob 1360: if (stat(fname, &st) < 0) {
1361: if (errno == ENOENT)
1362: return 0;
1.269 djm 1363: fatal("%s: %s", fname, strerror(errno));
1.105 jakob 1364: }
1.269 djm 1365: if ((r = sshkey_load_public(fname, &public, &comment)) != 0)
1366: fatal("Failed to read v2 public key from \"%s\": %s.",
1.252 djm 1367: fname, ssh_err(r));
1368: export_dns_rr(hname, public, stdout, print_generic);
1369: sshkey_free(public);
1370: free(comment);
1371: return 1;
1.105 jakob 1372: }
1373:
1.13 deraadt 1374: /*
1375: * Change the comment of a private key file.
1376: */
1.63 itojun 1377: static void
1.2 provos 1378: do_change_comment(struct passwd *pw)
1.1 deraadt 1379: {
1.46 deraadt 1380: char new_comment[1024], *comment, *passphrase;
1.252 djm 1381: struct sshkey *private;
1382: struct sshkey *public;
1.12 markus 1383: struct stat st;
1384: FILE *f;
1.252 djm 1385: int r, fd;
1.12 markus 1386:
1387: if (!have_identity)
1388: ask_filename(pw, "Enter file in which the key is");
1.269 djm 1389: if (stat(identity_file, &st) < 0)
1390: fatal("%s: %s", identity_file, strerror(errno));
1.252 djm 1391: if ((r = sshkey_load_private(identity_file, "",
1392: &private, &comment)) == 0)
1393: passphrase = xstrdup("");
1.269 djm 1394: else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
1395: fatal("Cannot load private key \"%s\": %s.",
1.252 djm 1396: identity_file, ssh_err(r));
1.269 djm 1397: else {
1.12 markus 1398: if (identity_passphrase)
1399: passphrase = xstrdup(identity_passphrase);
1400: else if (identity_new_passphrase)
1401: passphrase = xstrdup(identity_new_passphrase);
1402: else
1.65 markus 1403: passphrase = read_passphrase("Enter passphrase: ",
1404: RP_ALLOW_STDIN);
1.12 markus 1405: /* Try to load using the passphrase. */
1.252 djm 1406: if ((r = sshkey_load_private(identity_file, passphrase,
1407: &private, &comment)) != 0) {
1.240 djm 1408: explicit_bzero(passphrase, strlen(passphrase));
1.227 djm 1409: free(passphrase);
1.269 djm 1410: fatal("Cannot load private key \"%s\": %s.",
1.252 djm 1411: identity_file, ssh_err(r));
1.12 markus 1412: }
1413: }
1.283 halex 1414:
1.302 ! djm 1415: if (private->type != KEY_ED25519 && !use_new_format) {
! 1416: error("Comments are only supported for keys stored in "
1.283 halex 1417: "the new format (-o).");
1.268 tobias 1418: explicit_bzero(passphrase, strlen(passphrase));
1.252 djm 1419: sshkey_free(private);
1.52 markus 1420: exit(1);
1.86 deraadt 1421: }
1.293 millert 1422: if (comment)
1423: printf("Key now has comment '%s'\n", comment);
1424: else
1425: printf("Key now has no comment\n");
1.12 markus 1426:
1427: if (identity_comment) {
1428: strlcpy(new_comment, identity_comment, sizeof(new_comment));
1429: } else {
1430: printf("Enter new comment: ");
1431: fflush(stdout);
1432: if (!fgets(new_comment, sizeof(new_comment), stdin)) {
1.240 djm 1433: explicit_bzero(passphrase, strlen(passphrase));
1.252 djm 1434: sshkey_free(private);
1.12 markus 1435: exit(1);
1436: }
1.162 gilles 1437: new_comment[strcspn(new_comment, "\n")] = '\0';
1.12 markus 1438: }
1439:
1440: /* Save the file using the new passphrase. */
1.252 djm 1441: if ((r = sshkey_save_private(private, identity_file, passphrase,
1442: new_comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 1443: error("Saving key \"%s\" failed: %s",
1.252 djm 1444: identity_file, ssh_err(r));
1.240 djm 1445: explicit_bzero(passphrase, strlen(passphrase));
1.227 djm 1446: free(passphrase);
1.252 djm 1447: sshkey_free(private);
1.227 djm 1448: free(comment);
1.12 markus 1449: exit(1);
1450: }
1.240 djm 1451: explicit_bzero(passphrase, strlen(passphrase));
1.227 djm 1452: free(passphrase);
1.252 djm 1453: if ((r = sshkey_from_private(private, &public)) != 0)
1454: fatal("key_from_private failed: %s", ssh_err(r));
1455: sshkey_free(private);
1.12 markus 1456:
1457: strlcat(identity_file, ".pub", sizeof(identity_file));
1.46 deraadt 1458: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1.269 djm 1459: if (fd == -1)
1460: fatal("Could not save your public key in %s", identity_file);
1.46 deraadt 1461: f = fdopen(fd, "w");
1.269 djm 1462: if (f == NULL)
1463: fatal("fdopen %s failed: %s", identity_file, strerror(errno));
1.252 djm 1464: if ((r = sshkey_write(public, f)) != 0)
1.269 djm 1465: fatal("write key failed: %s", ssh_err(r));
1.252 djm 1466: sshkey_free(public);
1.19 markus 1467: fprintf(f, " %s\n", new_comment);
1.12 markus 1468: fclose(f);
1.1 deraadt 1469:
1.227 djm 1470: free(comment);
1.1 deraadt 1471:
1.12 markus 1472: printf("The comment in your key file has been changed.\n");
1473: exit(0);
1.1 deraadt 1474: }
1475:
1.179 djm 1476: static void
1.252 djm 1477: add_flag_option(struct sshbuf *c, const char *name)
1.179 djm 1478: {
1.252 djm 1479: int r;
1480:
1.179 djm 1481: debug3("%s: %s", __func__, name);
1.252 djm 1482: if ((r = sshbuf_put_cstring(c, name)) != 0 ||
1483: (r = sshbuf_put_string(c, NULL, 0)) != 0)
1484: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.179 djm 1485: }
1486:
1487: static void
1.252 djm 1488: add_string_option(struct sshbuf *c, const char *name, const char *value)
1.179 djm 1489: {
1.252 djm 1490: struct sshbuf *b;
1491: int r;
1.179 djm 1492:
1493: debug3("%s: %s=%s", __func__, name, value);
1.252 djm 1494: if ((b = sshbuf_new()) == NULL)
1495: fatal("%s: sshbuf_new failed", __func__);
1496: if ((r = sshbuf_put_cstring(b, value)) != 0 ||
1497: (r = sshbuf_put_cstring(c, name)) != 0 ||
1498: (r = sshbuf_put_stringb(c, b)) != 0)
1499: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.179 djm 1500:
1.252 djm 1501: sshbuf_free(b);
1.179 djm 1502: }
1503:
1.190 djm 1504: #define OPTIONS_CRITICAL 1
1505: #define OPTIONS_EXTENSIONS 2
1.179 djm 1506: static void
1.252 djm 1507: prepare_options_buf(struct sshbuf *c, int which)
1.179 djm 1508: {
1.300 djm 1509: size_t i;
1510:
1.252 djm 1511: sshbuf_reset(c);
1.196 djm 1512: if ((which & OPTIONS_CRITICAL) != 0 &&
1513: certflags_command != NULL)
1514: add_string_option(c, "force-command", certflags_command);
1.190 djm 1515: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.210 djm 1516: (certflags_flags & CERTOPT_X_FWD) != 0)
1517: add_flag_option(c, "permit-X11-forwarding");
1518: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.190 djm 1519: (certflags_flags & CERTOPT_AGENT_FWD) != 0)
1.186 djm 1520: add_flag_option(c, "permit-agent-forwarding");
1.190 djm 1521: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1522: (certflags_flags & CERTOPT_PORT_FWD) != 0)
1.186 djm 1523: add_flag_option(c, "permit-port-forwarding");
1.190 djm 1524: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1525: (certflags_flags & CERTOPT_PTY) != 0)
1.186 djm 1526: add_flag_option(c, "permit-pty");
1.190 djm 1527: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1528: (certflags_flags & CERTOPT_USER_RC) != 0)
1.186 djm 1529: add_flag_option(c, "permit-user-rc");
1.190 djm 1530: if ((which & OPTIONS_CRITICAL) != 0 &&
1531: certflags_src_addr != NULL)
1532: add_string_option(c, "source-address", certflags_src_addr);
1.300 djm 1533: for (i = 0; i < ncert_userext; i++) {
1534: if ((cert_userext[i].crit && (which & OPTIONS_EXTENSIONS)) ||
1535: (!cert_userext[i].crit && (which & OPTIONS_CRITICAL)))
1536: continue;
1537: if (cert_userext[i].val == NULL)
1538: add_flag_option(c, cert_userext[i].key);
1539: else {
1540: add_string_option(c, cert_userext[i].key,
1541: cert_userext[i].val);
1542: }
1543: }
1.179 djm 1544: }
1545:
1.252 djm 1546: static struct sshkey *
1.197 djm 1547: load_pkcs11_key(char *path)
1548: {
1549: #ifdef ENABLE_PKCS11
1.252 djm 1550: struct sshkey **keys = NULL, *public, *private = NULL;
1551: int r, i, nkeys;
1.197 djm 1552:
1.252 djm 1553: if ((r = sshkey_load_public(path, &public, NULL)) != 0)
1554: fatal("Couldn't load CA public key \"%s\": %s",
1555: path, ssh_err(r));
1.197 djm 1556:
1557: nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, &keys);
1558: debug3("%s: %d keys", __func__, nkeys);
1559: if (nkeys <= 0)
1560: fatal("cannot read public key from pkcs11");
1561: for (i = 0; i < nkeys; i++) {
1.252 djm 1562: if (sshkey_equal_public(public, keys[i])) {
1.197 djm 1563: private = keys[i];
1564: continue;
1565: }
1.252 djm 1566: sshkey_free(keys[i]);
1.197 djm 1567: }
1.227 djm 1568: free(keys);
1.252 djm 1569: sshkey_free(public);
1.197 djm 1570: return private;
1571: #else
1572: fatal("no pkcs11 support");
1573: #endif /* ENABLE_PKCS11 */
1574: }
1575:
1.179 djm 1576: static void
1577: do_ca_sign(struct passwd *pw, int argc, char **argv)
1578: {
1.252 djm 1579: int r, i, fd;
1.179 djm 1580: u_int n;
1.252 djm 1581: struct sshkey *ca, *public;
1.281 djm 1582: char valid[64], *otmp, *tmp, *cp, *out, *comment, **plist = NULL;
1.179 djm 1583: FILE *f;
1.186 djm 1584:
1.246 markus 1585: #ifdef ENABLE_PKCS11
1.197 djm 1586: pkcs11_init(1);
1.246 markus 1587: #endif
1.197 djm 1588: tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
1589: if (pkcs11provider != NULL) {
1590: if ((ca = load_pkcs11_key(tmp)) == NULL)
1591: fatal("No PKCS#11 key matching %s found", ca_key_path);
1.252 djm 1592: } else
1593: ca = load_identity(tmp);
1.227 djm 1594: free(tmp);
1.197 djm 1595:
1.290 djm 1596: if (key_type_name != NULL &&
1597: sshkey_type_from_name(key_type_name) != ca->type) {
1598: fatal("CA key type %s doesn't match specified %s",
1599: sshkey_ssh_name(ca), key_type_name);
1600: }
1601:
1.179 djm 1602: for (i = 0; i < argc; i++) {
1603: /* Split list of principals */
1604: n = 0;
1605: if (cert_principals != NULL) {
1606: otmp = tmp = xstrdup(cert_principals);
1607: plist = NULL;
1608: for (; (cp = strsep(&tmp, ",")) != NULL; n++) {
1.270 deraadt 1609: plist = xreallocarray(plist, n + 1, sizeof(*plist));
1.179 djm 1610: if (*(plist[n] = xstrdup(cp)) == '\0')
1611: fatal("Empty principal name");
1612: }
1.227 djm 1613: free(otmp);
1.179 djm 1614: }
1615:
1616: tmp = tilde_expand_filename(argv[i], pw->pw_uid);
1.252 djm 1617: if ((r = sshkey_load_public(tmp, &public, &comment)) != 0)
1618: fatal("%s: unable to open \"%s\": %s",
1619: __func__, tmp, ssh_err(r));
1.200 djm 1620: if (public->type != KEY_RSA && public->type != KEY_DSA &&
1.238 markus 1621: public->type != KEY_ECDSA && public->type != KEY_ED25519)
1.179 djm 1622: fatal("%s: key \"%s\" type %s cannot be certified",
1.252 djm 1623: __func__, tmp, sshkey_type(public));
1.179 djm 1624:
1625: /* Prepare certificate to sign */
1.275 djm 1626: if ((r = sshkey_to_certified(public)) != 0)
1.252 djm 1627: fatal("Could not upgrade key %s to certificate: %s",
1628: tmp, ssh_err(r));
1.179 djm 1629: public->cert->type = cert_key_type;
1.186 djm 1630: public->cert->serial = (u_int64_t)cert_serial;
1.179 djm 1631: public->cert->key_id = xstrdup(cert_key_id);
1632: public->cert->nprincipals = n;
1633: public->cert->principals = plist;
1634: public->cert->valid_after = cert_valid_from;
1635: public->cert->valid_before = cert_valid_to;
1.275 djm 1636: prepare_options_buf(public->cert->critical, OPTIONS_CRITICAL);
1637: prepare_options_buf(public->cert->extensions,
1638: OPTIONS_EXTENSIONS);
1.252 djm 1639: if ((r = sshkey_from_private(ca,
1640: &public->cert->signature_key)) != 0)
1641: fatal("key_from_private (ca key): %s", ssh_err(r));
1.179 djm 1642:
1.290 djm 1643: if ((r = sshkey_certify(public, ca, key_type_name)) != 0)
1644: fatal("Couldn't certify key %s: %s", tmp, ssh_err(r));
1.179 djm 1645:
1646: if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0)
1647: *cp = '\0';
1648: xasprintf(&out, "%s-cert.pub", tmp);
1.227 djm 1649: free(tmp);
1.179 djm 1650:
1651: if ((fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
1652: fatal("Could not open \"%s\" for writing: %s", out,
1653: strerror(errno));
1654: if ((f = fdopen(fd, "w")) == NULL)
1655: fatal("%s: fdopen: %s", __func__, strerror(errno));
1.252 djm 1656: if ((r = sshkey_write(public, f)) != 0)
1657: fatal("Could not write certified key to %s: %s",
1658: out, ssh_err(r));
1.179 djm 1659: fprintf(f, " %s\n", comment);
1660: fclose(f);
1661:
1.186 djm 1662: if (!quiet) {
1.282 djm 1663: sshkey_format_cert_validity(public->cert,
1.281 djm 1664: valid, sizeof(valid));
1.186 djm 1665: logit("Signed %s key %s: id \"%s\" serial %llu%s%s "
1.282 djm 1666: "valid %s", sshkey_cert_type(public),
1.205 djm 1667: out, public->cert->key_id,
1668: (unsigned long long)public->cert->serial,
1.179 djm 1669: cert_principals != NULL ? " for " : "",
1670: cert_principals != NULL ? cert_principals : "",
1.281 djm 1671: valid);
1.186 djm 1672: }
1.179 djm 1673:
1.252 djm 1674: sshkey_free(public);
1.227 djm 1675: free(out);
1.179 djm 1676: }
1.246 markus 1677: #ifdef ENABLE_PKCS11
1.197 djm 1678: pkcs11_terminate();
1.246 markus 1679: #endif
1.179 djm 1680: exit(0);
1681: }
1682:
1683: static u_int64_t
1684: parse_relative_time(const char *s, time_t now)
1685: {
1686: int64_t mul, secs;
1687:
1688: mul = *s == '-' ? -1 : 1;
1689:
1690: if ((secs = convtime(s + 1)) == -1)
1691: fatal("Invalid relative certificate time %s", s);
1692: if (mul == -1 && secs > now)
1693: fatal("Certificate time %s cannot be represented", s);
1694: return now + (u_int64_t)(secs * mul);
1695: }
1696:
1697: static u_int64_t
1698: parse_absolute_time(const char *s)
1699: {
1700: struct tm tm;
1701: time_t tt;
1.180 djm 1702: char buf[32], *fmt;
1.179 djm 1703:
1.180 djm 1704: /*
1.282 djm 1705: * POSIX strptime says "The application shall ensure that there
1.180 djm 1706: * is white-space or other non-alphanumeric characters between
1707: * any two conversion specifications" so arrange things this way.
1708: */
1709: switch (strlen(s)) {
1710: case 8:
1.184 djm 1711: fmt = "%Y-%m-%d";
1712: snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2s", s, s + 4, s + 6);
1.180 djm 1713: break;
1714: case 14:
1.184 djm 1715: fmt = "%Y-%m-%dT%H:%M:%S";
1716: snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2sT%.2s:%.2s:%.2s",
1.180 djm 1717: s, s + 4, s + 6, s + 8, s + 10, s + 12);
1718: break;
1719: default:
1.179 djm 1720: fatal("Invalid certificate time format %s", s);
1.180 djm 1721: }
1.179 djm 1722:
1.239 tedu 1723: memset(&tm, 0, sizeof(tm));
1.180 djm 1724: if (strptime(buf, fmt, &tm) == NULL)
1.179 djm 1725: fatal("Invalid certificate time %s", s);
1726: if ((tt = mktime(&tm)) < 0)
1727: fatal("Certificate time %s cannot be represented", s);
1728: return (u_int64_t)tt;
1729: }
1730:
1731: static void
1732: parse_cert_times(char *timespec)
1733: {
1734: char *from, *to;
1735: time_t now = time(NULL);
1736: int64_t secs;
1737:
1738: /* +timespec relative to now */
1739: if (*timespec == '+' && strchr(timespec, ':') == NULL) {
1740: if ((secs = convtime(timespec + 1)) == -1)
1741: fatal("Invalid relative certificate life %s", timespec);
1742: cert_valid_to = now + secs;
1743: /*
1744: * Backdate certificate one minute to avoid problems on hosts
1745: * with poorly-synchronised clocks.
1746: */
1747: cert_valid_from = ((now - 59)/ 60) * 60;
1748: return;
1749: }
1750:
1751: /*
1752: * from:to, where
1753: * from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
1754: * to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
1755: */
1756: from = xstrdup(timespec);
1757: to = strchr(from, ':');
1758: if (to == NULL || from == to || *(to + 1) == '\0')
1.181 djm 1759: fatal("Invalid certificate life specification %s", timespec);
1.179 djm 1760: *to++ = '\0';
1761:
1762: if (*from == '-' || *from == '+')
1763: cert_valid_from = parse_relative_time(from, now);
1764: else
1765: cert_valid_from = parse_absolute_time(from);
1766:
1767: if (*to == '-' || *to == '+')
1.235 djm 1768: cert_valid_to = parse_relative_time(to, now);
1.179 djm 1769: else
1770: cert_valid_to = parse_absolute_time(to);
1771:
1772: if (cert_valid_to <= cert_valid_from)
1773: fatal("Empty certificate validity interval");
1.227 djm 1774: free(from);
1.179 djm 1775: }
1776:
1777: static void
1.186 djm 1778: add_cert_option(char *opt)
1.179 djm 1779: {
1.300 djm 1780: char *val, *cp;
1781: int iscrit = 0;
1.179 djm 1782:
1.208 stevesk 1783: if (strcasecmp(opt, "clear") == 0)
1.190 djm 1784: certflags_flags = 0;
1.179 djm 1785: else if (strcasecmp(opt, "no-x11-forwarding") == 0)
1.190 djm 1786: certflags_flags &= ~CERTOPT_X_FWD;
1.179 djm 1787: else if (strcasecmp(opt, "permit-x11-forwarding") == 0)
1.190 djm 1788: certflags_flags |= CERTOPT_X_FWD;
1.179 djm 1789: else if (strcasecmp(opt, "no-agent-forwarding") == 0)
1.190 djm 1790: certflags_flags &= ~CERTOPT_AGENT_FWD;
1.179 djm 1791: else if (strcasecmp(opt, "permit-agent-forwarding") == 0)
1.190 djm 1792: certflags_flags |= CERTOPT_AGENT_FWD;
1.179 djm 1793: else if (strcasecmp(opt, "no-port-forwarding") == 0)
1.190 djm 1794: certflags_flags &= ~CERTOPT_PORT_FWD;
1.179 djm 1795: else if (strcasecmp(opt, "permit-port-forwarding") == 0)
1.190 djm 1796: certflags_flags |= CERTOPT_PORT_FWD;
1.179 djm 1797: else if (strcasecmp(opt, "no-pty") == 0)
1.190 djm 1798: certflags_flags &= ~CERTOPT_PTY;
1.179 djm 1799: else if (strcasecmp(opt, "permit-pty") == 0)
1.190 djm 1800: certflags_flags |= CERTOPT_PTY;
1.179 djm 1801: else if (strcasecmp(opt, "no-user-rc") == 0)
1.190 djm 1802: certflags_flags &= ~CERTOPT_USER_RC;
1.179 djm 1803: else if (strcasecmp(opt, "permit-user-rc") == 0)
1.190 djm 1804: certflags_flags |= CERTOPT_USER_RC;
1.179 djm 1805: else if (strncasecmp(opt, "force-command=", 14) == 0) {
1806: val = opt + 14;
1807: if (*val == '\0')
1.186 djm 1808: fatal("Empty force-command option");
1.190 djm 1809: if (certflags_command != NULL)
1.179 djm 1810: fatal("force-command already specified");
1.190 djm 1811: certflags_command = xstrdup(val);
1.179 djm 1812: } else if (strncasecmp(opt, "source-address=", 15) == 0) {
1813: val = opt + 15;
1814: if (*val == '\0')
1.186 djm 1815: fatal("Empty source-address option");
1.190 djm 1816: if (certflags_src_addr != NULL)
1.179 djm 1817: fatal("source-address already specified");
1818: if (addr_match_cidr_list(NULL, val) != 0)
1819: fatal("Invalid source-address list");
1.190 djm 1820: certflags_src_addr = xstrdup(val);
1.300 djm 1821: } else if (strncasecmp(opt, "extension:", 10) == 0 ||
1822: (iscrit = (strncasecmp(opt, "critical:", 9) == 0))) {
1823: val = xstrdup(strchr(opt, ':') + 1);
1824: if ((cp = strchr(val, '=')) != NULL)
1825: *cp++ = '\0';
1826: cert_userext = xreallocarray(cert_userext, ncert_userext + 1,
1827: sizeof(*cert_userext));
1828: cert_userext[ncert_userext].key = val;
1829: cert_userext[ncert_userext].val = cp == NULL ?
1830: NULL : xstrdup(cp);
1831: cert_userext[ncert_userext].crit = iscrit;
1832: ncert_userext++;
1.179 djm 1833: } else
1.186 djm 1834: fatal("Unsupported certificate option \"%s\"", opt);
1.179 djm 1835: }
1836:
1.63 itojun 1837: static void
1.275 djm 1838: show_options(struct sshbuf *optbuf, int in_critical)
1.192 djm 1839: {
1.245 djm 1840: char *name, *arg;
1.252 djm 1841: struct sshbuf *options, *option = NULL;
1842: int r;
1843:
1844: if ((options = sshbuf_fromb(optbuf)) == NULL)
1845: fatal("%s: sshbuf_fromb failed", __func__);
1846: while (sshbuf_len(options) != 0) {
1847: sshbuf_free(option);
1848: option = NULL;
1849: if ((r = sshbuf_get_cstring(options, &name, NULL)) != 0 ||
1850: (r = sshbuf_froms(options, &option)) != 0)
1851: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.192 djm 1852: printf(" %s", name);
1.275 djm 1853: if (!in_critical &&
1.192 djm 1854: (strcmp(name, "permit-X11-forwarding") == 0 ||
1855: strcmp(name, "permit-agent-forwarding") == 0 ||
1856: strcmp(name, "permit-port-forwarding") == 0 ||
1857: strcmp(name, "permit-pty") == 0 ||
1858: strcmp(name, "permit-user-rc") == 0))
1859: printf("\n");
1.275 djm 1860: else if (in_critical &&
1.192 djm 1861: (strcmp(name, "force-command") == 0 ||
1862: strcmp(name, "source-address") == 0)) {
1.252 djm 1863: if ((r = sshbuf_get_cstring(option, &arg, NULL)) != 0)
1864: fatal("%s: buffer error: %s",
1865: __func__, ssh_err(r));
1.245 djm 1866: printf(" %s\n", arg);
1867: free(arg);
1.192 djm 1868: } else {
1.252 djm 1869: printf(" UNKNOWN OPTION (len %zu)\n",
1870: sshbuf_len(option));
1871: sshbuf_reset(option);
1.192 djm 1872: }
1.227 djm 1873: free(name);
1.252 djm 1874: if (sshbuf_len(option) != 0)
1.192 djm 1875: fatal("Option corrupt: extra data at end");
1876: }
1.252 djm 1877: sshbuf_free(option);
1878: sshbuf_free(options);
1.192 djm 1879: }
1880:
1881: static void
1.278 djm 1882: print_cert(struct sshkey *key)
1.182 djm 1883: {
1.281 djm 1884: char valid[64], *key_fp, *ca_fp;
1.275 djm 1885: u_int i;
1.186 djm 1886:
1.252 djm 1887: key_fp = sshkey_fingerprint(key, fingerprint_hash, SSH_FP_DEFAULT);
1888: ca_fp = sshkey_fingerprint(key->cert->signature_key,
1.251 djm 1889: fingerprint_hash, SSH_FP_DEFAULT);
1.259 djm 1890: if (key_fp == NULL || ca_fp == NULL)
1891: fatal("%s: sshkey_fingerprint fail", __func__);
1.281 djm 1892: sshkey_format_cert_validity(key->cert, valid, sizeof(valid));
1.182 djm 1893:
1.252 djm 1894: printf(" Type: %s %s certificate\n", sshkey_ssh_name(key),
1895: sshkey_cert_type(key));
1896: printf(" Public key: %s %s\n", sshkey_type(key), key_fp);
1.186 djm 1897: printf(" Signing CA: %s %s\n",
1.252 djm 1898: sshkey_type(key->cert->signature_key), ca_fp);
1.186 djm 1899: printf(" Key ID: \"%s\"\n", key->cert->key_id);
1.275 djm 1900: printf(" Serial: %llu\n", (unsigned long long)key->cert->serial);
1.281 djm 1901: printf(" Valid: %s\n", valid);
1.182 djm 1902: printf(" Principals: ");
1903: if (key->cert->nprincipals == 0)
1904: printf("(none)\n");
1905: else {
1906: for (i = 0; i < key->cert->nprincipals; i++)
1907: printf("\n %s",
1908: key->cert->principals[i]);
1909: printf("\n");
1910: }
1.186 djm 1911: printf(" Critical Options: ");
1.252 djm 1912: if (sshbuf_len(key->cert->critical) == 0)
1.182 djm 1913: printf("(none)\n");
1914: else {
1915: printf("\n");
1.275 djm 1916: show_options(key->cert->critical, 1);
1.186 djm 1917: }
1.275 djm 1918: printf(" Extensions: ");
1919: if (sshbuf_len(key->cert->extensions) == 0)
1920: printf("(none)\n");
1921: else {
1922: printf("\n");
1923: show_options(key->cert->extensions, 0);
1.182 djm 1924: }
1.278 djm 1925: }
1926:
1927: static void
1928: do_show_cert(struct passwd *pw)
1929: {
1930: struct sshkey *key = NULL;
1931: struct stat st;
1932: int r, is_stdin = 0, ok = 0;
1933: FILE *f;
1.287 djm 1934: char *cp, line[SSH_MAX_PUBKEY_BYTES];
1.278 djm 1935: const char *path;
1.289 djm 1936: u_long lnum = 0;
1.278 djm 1937:
1938: if (!have_identity)
1939: ask_filename(pw, "Enter file in which the key is");
1940: if (strcmp(identity_file, "-") != 0 && stat(identity_file, &st) < 0)
1941: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1942:
1943: path = identity_file;
1944: if (strcmp(path, "-") == 0) {
1945: f = stdin;
1946: path = "(stdin)";
1947: is_stdin = 1;
1948: } else if ((f = fopen(identity_file, "r")) == NULL)
1949: fatal("fopen %s: %s", identity_file, strerror(errno));
1950:
1951: while (read_keyfile_line(f, path, line, sizeof(line), &lnum) == 0) {
1952: sshkey_free(key);
1953: key = NULL;
1954: /* Trim leading space and comments */
1955: cp = line + strspn(line, " \t");
1956: if (*cp == '#' || *cp == '\0')
1957: continue;
1958: if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
1959: fatal("key_new");
1960: if ((r = sshkey_read(key, &cp)) != 0) {
1961: error("%s:%lu: invalid key: %s", path,
1962: lnum, ssh_err(r));
1963: continue;
1964: }
1965: if (!sshkey_is_cert(key)) {
1966: error("%s:%lu is not a certificate", path, lnum);
1967: continue;
1968: }
1969: ok = 1;
1970: if (!is_stdin && lnum == 1)
1971: printf("%s:\n", path);
1972: else
1973: printf("%s:%lu:\n", path, lnum);
1974: print_cert(key);
1975: }
1976: sshkey_free(key);
1977: fclose(f);
1978: exit(ok ? 0 : 1);
1.182 djm 1979: }
1980:
1.246 markus 1981: #ifdef WITH_OPENSSL
1.182 djm 1982: static void
1.223 djm 1983: load_krl(const char *path, struct ssh_krl **krlp)
1984: {
1.252 djm 1985: struct sshbuf *krlbuf;
1986: int r, fd;
1.223 djm 1987:
1.252 djm 1988: if ((krlbuf = sshbuf_new()) == NULL)
1989: fatal("sshbuf_new failed");
1.223 djm 1990: if ((fd = open(path, O_RDONLY)) == -1)
1991: fatal("open %s: %s", path, strerror(errno));
1.252 djm 1992: if ((r = sshkey_load_file(fd, krlbuf)) != 0)
1993: fatal("Unable to load KRL: %s", ssh_err(r));
1.223 djm 1994: close(fd);
1995: /* XXX check sigs */
1.252 djm 1996: if ((r = ssh_krl_from_blob(krlbuf, krlp, NULL, 0)) != 0 ||
1.223 djm 1997: *krlp == NULL)
1.252 djm 1998: fatal("Invalid KRL file: %s", ssh_err(r));
1999: sshbuf_free(krlbuf);
1.223 djm 2000: }
2001:
2002: static void
1.261 djm 2003: update_krl_from_file(struct passwd *pw, const char *file, int wild_ca,
1.252 djm 2004: const struct sshkey *ca, struct ssh_krl *krl)
1.223 djm 2005: {
1.252 djm 2006: struct sshkey *key = NULL;
1.223 djm 2007: u_long lnum = 0;
2008: char *path, *cp, *ep, line[SSH_MAX_PUBKEY_BYTES];
2009: unsigned long long serial, serial2;
2010: int i, was_explicit_key, was_sha1, r;
2011: FILE *krl_spec;
2012:
2013: path = tilde_expand_filename(file, pw->pw_uid);
2014: if (strcmp(path, "-") == 0) {
2015: krl_spec = stdin;
2016: free(path);
2017: path = xstrdup("(standard input)");
2018: } else if ((krl_spec = fopen(path, "r")) == NULL)
2019: fatal("fopen %s: %s", path, strerror(errno));
2020:
2021: if (!quiet)
2022: printf("Revoking from %s\n", path);
2023: while (read_keyfile_line(krl_spec, path, line, sizeof(line),
2024: &lnum) == 0) {
2025: was_explicit_key = was_sha1 = 0;
2026: cp = line + strspn(line, " \t");
2027: /* Trim trailing space, comments and strip \n */
2028: for (i = 0, r = -1; cp[i] != '\0'; i++) {
2029: if (cp[i] == '#' || cp[i] == '\n') {
2030: cp[i] = '\0';
2031: break;
2032: }
2033: if (cp[i] == ' ' || cp[i] == '\t') {
2034: /* Remember the start of a span of whitespace */
2035: if (r == -1)
2036: r = i;
2037: } else
2038: r = -1;
2039: }
2040: if (r != -1)
2041: cp[r] = '\0';
2042: if (*cp == '\0')
2043: continue;
2044: if (strncasecmp(cp, "serial:", 7) == 0) {
1.261 djm 2045: if (ca == NULL && !wild_ca) {
1.231 djm 2046: fatal("revoking certificates by serial number "
1.223 djm 2047: "requires specification of a CA key");
2048: }
2049: cp += 7;
2050: cp = cp + strspn(cp, " \t");
2051: errno = 0;
2052: serial = strtoull(cp, &ep, 0);
2053: if (*cp == '\0' || (*ep != '\0' && *ep != '-'))
2054: fatal("%s:%lu: invalid serial \"%s\"",
2055: path, lnum, cp);
2056: if (errno == ERANGE && serial == ULLONG_MAX)
2057: fatal("%s:%lu: serial out of range",
2058: path, lnum);
2059: serial2 = serial;
2060: if (*ep == '-') {
2061: cp = ep + 1;
2062: errno = 0;
2063: serial2 = strtoull(cp, &ep, 0);
2064: if (*cp == '\0' || *ep != '\0')
2065: fatal("%s:%lu: invalid serial \"%s\"",
2066: path, lnum, cp);
2067: if (errno == ERANGE && serial2 == ULLONG_MAX)
2068: fatal("%s:%lu: serial out of range",
2069: path, lnum);
2070: if (serial2 <= serial)
2071: fatal("%s:%lu: invalid serial range "
2072: "%llu:%llu", path, lnum,
2073: (unsigned long long)serial,
2074: (unsigned long long)serial2);
2075: }
2076: if (ssh_krl_revoke_cert_by_serial_range(krl,
2077: ca, serial, serial2) != 0) {
2078: fatal("%s: revoke serial failed",
2079: __func__);
2080: }
2081: } else if (strncasecmp(cp, "id:", 3) == 0) {
1.261 djm 2082: if (ca == NULL && !wild_ca) {
1.232 djm 2083: fatal("revoking certificates by key ID "
1.223 djm 2084: "requires specification of a CA key");
2085: }
2086: cp += 3;
2087: cp = cp + strspn(cp, " \t");
2088: if (ssh_krl_revoke_cert_by_key_id(krl, ca, cp) != 0)
2089: fatal("%s: revoke key ID failed", __func__);
2090: } else {
2091: if (strncasecmp(cp, "key:", 4) == 0) {
2092: cp += 4;
2093: cp = cp + strspn(cp, " \t");
2094: was_explicit_key = 1;
2095: } else if (strncasecmp(cp, "sha1:", 5) == 0) {
2096: cp += 5;
2097: cp = cp + strspn(cp, " \t");
2098: was_sha1 = 1;
2099: } else {
2100: /*
2101: * Just try to process the line as a key.
2102: * Parsing will fail if it isn't.
2103: */
2104: }
1.252 djm 2105: if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
1.223 djm 2106: fatal("key_new");
1.252 djm 2107: if ((r = sshkey_read(key, &cp)) != 0)
2108: fatal("%s:%lu: invalid key: %s",
2109: path, lnum, ssh_err(r));
1.223 djm 2110: if (was_explicit_key)
2111: r = ssh_krl_revoke_key_explicit(krl, key);
2112: else if (was_sha1)
2113: r = ssh_krl_revoke_key_sha1(krl, key);
2114: else
2115: r = ssh_krl_revoke_key(krl, key);
2116: if (r != 0)
1.252 djm 2117: fatal("%s: revoke key failed: %s",
2118: __func__, ssh_err(r));
2119: sshkey_free(key);
1.223 djm 2120: }
2121: }
2122: if (strcmp(path, "-") != 0)
2123: fclose(krl_spec);
1.226 djm 2124: free(path);
1.223 djm 2125: }
2126:
2127: static void
2128: do_gen_krl(struct passwd *pw, int updating, int argc, char **argv)
2129: {
2130: struct ssh_krl *krl;
2131: struct stat sb;
1.252 djm 2132: struct sshkey *ca = NULL;
1.261 djm 2133: int fd, i, r, wild_ca = 0;
1.223 djm 2134: char *tmp;
1.252 djm 2135: struct sshbuf *kbuf;
1.223 djm 2136:
2137: if (*identity_file == '\0')
2138: fatal("KRL generation requires an output file");
2139: if (stat(identity_file, &sb) == -1) {
2140: if (errno != ENOENT)
2141: fatal("Cannot access KRL \"%s\": %s",
2142: identity_file, strerror(errno));
2143: if (updating)
2144: fatal("KRL \"%s\" does not exist", identity_file);
2145: }
2146: if (ca_key_path != NULL) {
1.261 djm 2147: if (strcasecmp(ca_key_path, "none") == 0)
2148: wild_ca = 1;
2149: else {
2150: tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
2151: if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)
2152: fatal("Cannot load CA public key %s: %s",
2153: tmp, ssh_err(r));
2154: free(tmp);
2155: }
1.223 djm 2156: }
2157:
2158: if (updating)
2159: load_krl(identity_file, &krl);
2160: else if ((krl = ssh_krl_init()) == NULL)
2161: fatal("couldn't create KRL");
2162:
2163: if (cert_serial != 0)
2164: ssh_krl_set_version(krl, cert_serial);
2165: if (identity_comment != NULL)
2166: ssh_krl_set_comment(krl, identity_comment);
2167:
2168: for (i = 0; i < argc; i++)
1.261 djm 2169: update_krl_from_file(pw, argv[i], wild_ca, ca, krl);
1.223 djm 2170:
1.252 djm 2171: if ((kbuf = sshbuf_new()) == NULL)
2172: fatal("sshbuf_new failed");
2173: if (ssh_krl_to_blob(krl, kbuf, NULL, 0) != 0)
1.223 djm 2174: fatal("Couldn't generate KRL");
2175: if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
2176: fatal("open %s: %s", identity_file, strerror(errno));
1.252 djm 2177: if (atomicio(vwrite, fd, (void *)sshbuf_ptr(kbuf), sshbuf_len(kbuf)) !=
2178: sshbuf_len(kbuf))
1.223 djm 2179: fatal("write %s: %s", identity_file, strerror(errno));
2180: close(fd);
1.252 djm 2181: sshbuf_free(kbuf);
1.223 djm 2182: ssh_krl_free(krl);
1.286 mmcc 2183: sshkey_free(ca);
1.223 djm 2184: }
2185:
2186: static void
2187: do_check_krl(struct passwd *pw, int argc, char **argv)
2188: {
2189: int i, r, ret = 0;
2190: char *comment;
2191: struct ssh_krl *krl;
1.252 djm 2192: struct sshkey *k;
1.223 djm 2193:
2194: if (*identity_file == '\0')
2195: fatal("KRL checking requires an input file");
2196: load_krl(identity_file, &krl);
2197: for (i = 0; i < argc; i++) {
1.252 djm 2198: if ((r = sshkey_load_public(argv[i], &k, &comment)) != 0)
2199: fatal("Cannot load public key %s: %s",
2200: argv[i], ssh_err(r));
1.223 djm 2201: r = ssh_krl_check_key(krl, k);
2202: printf("%s%s%s%s: %s\n", argv[i],
2203: *comment ? " (" : "", comment, *comment ? ")" : "",
2204: r == 0 ? "ok" : "REVOKED");
2205: if (r != 0)
2206: ret = 1;
1.252 djm 2207: sshkey_free(k);
1.223 djm 2208: free(comment);
2209: }
2210: ssh_krl_free(krl);
2211: exit(ret);
2212: }
1.246 markus 2213: #endif
1.223 djm 2214:
2215: static void
1.10 markus 2216: usage(void)
2217: {
1.243 deraadt 2218: fprintf(stderr,
1.302 ! djm 2219: "usage: ssh-keygen [-q] [-b bits] [-t dsa | ecdsa | ed25519 | rsa]\n"
1.243 deraadt 2220: " [-N new_passphrase] [-C comment] [-f output_keyfile]\n"
2221: " ssh-keygen -p [-P old_passphrase] [-N new_passphrase] [-f keyfile]\n"
2222: " ssh-keygen -i [-m key_format] [-f input_keyfile]\n"
2223: " ssh-keygen -e [-m key_format] [-f input_keyfile]\n"
2224: " ssh-keygen -y [-f input_keyfile]\n"
2225: " ssh-keygen -c [-P passphrase] [-C comment] [-f keyfile]\n"
1.265 naddy 2226: " ssh-keygen -l [-v] [-E fingerprint_hash] [-f input_keyfile]\n"
1.302 ! djm 2227: " ssh-keygen -B [-f input_keyfile]\n");
1.177 markus 2228: #ifdef ENABLE_PKCS11
1.243 deraadt 2229: fprintf(stderr,
2230: " ssh-keygen -D pkcs11\n");
1.177 markus 2231: #endif
1.243 deraadt 2232: fprintf(stderr,
2233: " ssh-keygen -F hostname [-f known_hosts_file] [-l]\n"
2234: " ssh-keygen -H [-f known_hosts_file]\n"
2235: " ssh-keygen -R hostname [-f known_hosts_file]\n"
2236: " ssh-keygen -r hostname [-f input_keyfile] [-g]\n"
1.274 djm 2237: #ifdef WITH_OPENSSL
1.243 deraadt 2238: " ssh-keygen -G output_file [-v] [-b bits] [-M memory] [-S start_point]\n"
2239: " ssh-keygen -T output_file -f input_file [-v] [-a rounds] [-J num_lines]\n"
2240: " [-j start_line] [-K checkpt] [-W generator]\n"
1.274 djm 2241: #endif
1.243 deraadt 2242: " ssh-keygen -s ca_key -I certificate_identity [-h] [-n principals]\n"
2243: " [-O option] [-V validity_interval] [-z serial_number] file ...\n"
2244: " ssh-keygen -L [-f input_keyfile]\n"
2245: " ssh-keygen -A\n"
2246: " ssh-keygen -k -f krl_file [-u] [-s ca_public] [-z version_number]\n"
2247: " file ...\n"
2248: " ssh-keygen -Q -f krl_file file ...\n");
1.12 markus 2249: exit(1);
1.10 markus 2250: }
2251:
1.13 deraadt 2252: /*
2253: * Main program for key management.
2254: */
1.2 provos 2255: int
1.156 deraadt 2256: main(int argc, char **argv)
1.1 deraadt 2257: {
1.253 deraadt 2258: char dotsshdir[PATH_MAX], comment[1024], *passphrase1, *passphrase2;
1.274 djm 2259: char *rr_hostname = NULL, *ep, *fp, *ra;
1.252 djm 2260: struct sshkey *private, *public;
1.12 markus 2261: struct passwd *pw;
2262: struct stat st;
1.252 djm 2263: int r, opt, type, fd;
1.274 djm 2264: int gen_all_hostkeys = 0, gen_krl = 0, update_krl = 0, check_krl = 0;
2265: FILE *f;
2266: const char *errstr;
2267: #ifdef WITH_OPENSSL
2268: /* Moduli generation/screening */
2269: char out_file[PATH_MAX], *checkpoint = NULL;
1.237 markus 2270: u_int32_t memory = 0, generator_wanted = 0;
1.107 djm 2271: int do_gen_candidates = 0, do_screen_candidates = 0;
1.215 dtucker 2272: unsigned long start_lineno = 0, lines_to_process = 0;
1.107 djm 2273: BIGNUM *start = NULL;
1.274 djm 2274: #endif
1.33 markus 2275:
1.12 markus 2276: extern int optind;
2277: extern char *optarg;
1.129 djm 2278:
1.288 dtucker 2279: ssh_malloc_init(); /* must be called before any mallocs */
1.129 djm 2280: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
2281: sanitise_stdfd();
1.12 markus 2282:
1.201 djm 2283: OpenSSL_add_all_algorithms();
1.156 deraadt 2284: log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
1.294 djm 2285:
2286: setlocale(LC_CTYPE, "");
1.19 markus 2287:
1.14 markus 2288: /* we need this for the home * directory. */
1.12 markus 2289: pw = getpwuid(getuid());
1.269 djm 2290: if (!pw)
2291: fatal("No user exists for uid %lu", (u_long)getuid());
2292: if (gethostname(hostname, sizeof(hostname)) < 0)
2293: fatal("gethostname: %s", strerror(errno));
1.14 markus 2294:
1.251 djm 2295: /* Remaining characters: UYdw */
1.237 markus 2296: while ((opt = getopt(argc, argv, "ABHLQXceghiklopquvxy"
1.251 djm 2297: "C:D:E:F:G:I:J:K:M:N:O:P:R:S:T:V:W:Z:"
2298: "a:b:f:g:j:m:n:r:s:t:z:")) != -1) {
1.12 markus 2299: switch (opt) {
1.206 stevesk 2300: case 'A':
2301: gen_all_hostkeys = 1;
2302: break;
1.12 markus 2303: case 'b':
1.202 markus 2304: bits = (u_int32_t)strtonum(optarg, 256, 32768, &errstr);
1.125 avsm 2305: if (errstr)
2306: fatal("Bits has bad value %s (%s)",
2307: optarg, errstr);
1.12 markus 2308: break;
1.251 djm 2309: case 'E':
2310: fingerprint_hash = ssh_digest_alg_by_name(optarg);
2311: if (fingerprint_hash == -1)
2312: fatal("Invalid hash algorithm \"%s\"", optarg);
2313: break;
1.119 djm 2314: case 'F':
2315: find_host = 1;
2316: rr_hostname = optarg;
2317: break;
2318: case 'H':
2319: hash_hosts = 1;
2320: break;
1.179 djm 2321: case 'I':
2322: cert_key_id = optarg;
2323: break;
1.119 djm 2324: case 'R':
2325: delete_host = 1;
2326: rr_hostname = optarg;
2327: break;
1.182 djm 2328: case 'L':
2329: show_cert = 1;
2330: break;
1.12 markus 2331: case 'l':
2332: print_fingerprint = 1;
2333: break;
1.49 markus 2334: case 'B':
2335: print_bubblebabble = 1;
2336: break;
1.193 djm 2337: case 'm':
2338: if (strcasecmp(optarg, "RFC4716") == 0 ||
2339: strcasecmp(optarg, "ssh2") == 0) {
2340: convert_format = FMT_RFC4716;
2341: break;
2342: }
2343: if (strcasecmp(optarg, "PKCS8") == 0) {
2344: convert_format = FMT_PKCS8;
2345: break;
2346: }
2347: if (strcasecmp(optarg, "PEM") == 0) {
2348: convert_format = FMT_PEM;
2349: break;
2350: }
2351: fatal("Unsupported conversion format \"%s\"", optarg);
1.179 djm 2352: case 'n':
2353: cert_principals = optarg;
2354: break;
1.237 markus 2355: case 'o':
2356: use_new_format = 1;
2357: break;
1.12 markus 2358: case 'p':
2359: change_passphrase = 1;
2360: break;
2361: case 'c':
2362: change_comment = 1;
2363: break;
2364: case 'f':
1.274 djm 2365: if (strlcpy(identity_file, optarg,
2366: sizeof(identity_file)) >= sizeof(identity_file))
1.124 avsm 2367: fatal("Identity filename too long");
1.12 markus 2368: have_identity = 1;
2369: break;
1.105 jakob 2370: case 'g':
2371: print_generic = 1;
2372: break;
1.12 markus 2373: case 'P':
2374: identity_passphrase = optarg;
2375: break;
2376: case 'N':
2377: identity_new_passphrase = optarg;
2378: break;
1.223 djm 2379: case 'Q':
2380: check_krl = 1;
2381: break;
1.179 djm 2382: case 'O':
1.186 djm 2383: add_cert_option(optarg);
1.179 djm 2384: break;
1.237 markus 2385: case 'Z':
2386: new_format_cipher = optarg;
2387: break;
1.12 markus 2388: case 'C':
2389: identity_comment = optarg;
2390: break;
2391: case 'q':
2392: quiet = 1;
1.20 deraadt 2393: break;
1.57 markus 2394: case 'e':
1.19 markus 2395: case 'x':
1.57 markus 2396: /* export key */
1.193 djm 2397: convert_to = 1;
1.19 markus 2398: break;
1.179 djm 2399: case 'h':
2400: cert_key_type = SSH2_CERT_TYPE_HOST;
1.190 djm 2401: certflags_flags = 0;
1.179 djm 2402: break;
1.223 djm 2403: case 'k':
2404: gen_krl = 1;
2405: break;
1.57 markus 2406: case 'i':
1.19 markus 2407: case 'X':
1.57 markus 2408: /* import key */
1.193 djm 2409: convert_from = 1;
1.19 markus 2410: break;
2411: case 'y':
2412: print_public = 1;
2413: break;
1.179 djm 2414: case 's':
2415: ca_key_path = optarg;
2416: break;
1.33 markus 2417: case 't':
2418: key_type_name = optarg;
2419: break;
1.75 markus 2420: case 'D':
1.177 markus 2421: pkcs11provider = optarg;
1.66 markus 2422: break;
1.223 djm 2423: case 'u':
2424: update_krl = 1;
2425: break;
1.113 djm 2426: case 'v':
2427: if (log_level == SYSLOG_LEVEL_INFO)
2428: log_level = SYSLOG_LEVEL_DEBUG1;
2429: else {
1.117 deraadt 2430: if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
1.113 djm 2431: log_level < SYSLOG_LEVEL_DEBUG3)
2432: log_level++;
2433: }
2434: break;
1.105 jakob 2435: case 'r':
1.119 djm 2436: rr_hostname = optarg;
1.105 jakob 2437: break;
1.107 djm 2438: case 'a':
1.237 markus 2439: rounds = (int)strtonum(optarg, 1, INT_MAX, &errstr);
1.124 avsm 2440: if (errstr)
1.237 markus 2441: fatal("Invalid number: %s (%s)",
1.124 avsm 2442: optarg, errstr);
1.107 djm 2443: break;
1.274 djm 2444: case 'V':
2445: parse_cert_times(optarg);
2446: break;
2447: case 'z':
2448: errno = 0;
2449: cert_serial = strtoull(optarg, &ep, 10);
2450: if (*optarg < '0' || *optarg > '9' || *ep != '\0' ||
2451: (errno == ERANGE && cert_serial == ULLONG_MAX))
2452: fatal("Invalid serial number \"%s\"", optarg);
1.107 djm 2453: break;
1.274 djm 2454: #ifdef WITH_OPENSSL
2455: /* Moduli generation/screening */
1.107 djm 2456: case 'G':
2457: do_gen_candidates = 1;
1.124 avsm 2458: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2459: sizeof(out_file))
2460: fatal("Output filename too long");
1.107 djm 2461: break;
1.274 djm 2462: case 'J':
2463: lines_to_process = strtoul(optarg, NULL, 10);
1.292 dtucker 2464: break;
1.274 djm 2465: case 'j':
2466: start_lineno = strtoul(optarg, NULL, 10);
1.292 dtucker 2467: break;
1.211 dtucker 2468: case 'K':
1.253 deraadt 2469: if (strlen(optarg) >= PATH_MAX)
1.211 dtucker 2470: fatal("Checkpoint filename too long");
2471: checkpoint = xstrdup(optarg);
2472: break;
1.274 djm 2473: case 'M':
2474: memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX,
2475: &errstr);
2476: if (errstr)
2477: fatal("Memory limit is %s: %s", errstr, optarg);
2478: break;
1.107 djm 2479: case 'S':
2480: /* XXX - also compare length against bits */
2481: if (BN_hex2bn(&start, optarg) == 0)
2482: fatal("Invalid start point.");
2483: break;
1.274 djm 2484: case 'T':
2485: do_screen_candidates = 1;
2486: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2487: sizeof(out_file))
2488: fatal("Output filename too long");
1.186 djm 2489: break;
1.274 djm 2490: case 'W':
2491: generator_wanted = (u_int32_t)strtonum(optarg, 1,
2492: UINT_MAX, &errstr);
2493: if (errstr != NULL)
2494: fatal("Desired generator invalid: %s (%s)",
2495: optarg, errstr);
1.179 djm 2496: break;
1.274 djm 2497: #endif /* WITH_OPENSSL */
1.12 markus 2498: case '?':
2499: default:
2500: usage();
2501: }
2502: }
1.113 djm 2503:
2504: /* reinit */
1.156 deraadt 2505: log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
1.113 djm 2506:
1.179 djm 2507: argv += optind;
2508: argc -= optind;
2509:
2510: if (ca_key_path != NULL) {
1.223 djm 2511: if (argc < 1 && !gen_krl) {
1.269 djm 2512: error("Too few arguments.");
1.179 djm 2513: usage();
2514: }
1.223 djm 2515: } else if (argc > 0 && !gen_krl && !check_krl) {
1.269 djm 2516: error("Too many arguments.");
1.87 djm 2517: usage();
2518: }
1.12 markus 2519: if (change_passphrase && change_comment) {
1.269 djm 2520: error("Can only have one of -p and -c.");
1.166 djm 2521: usage();
2522: }
2523: if (print_fingerprint && (delete_host || hash_hosts)) {
1.269 djm 2524: error("Cannot use -l with -H or -R.");
1.12 markus 2525: usage();
1.223 djm 2526: }
1.246 markus 2527: #ifdef WITH_OPENSSL
1.223 djm 2528: if (gen_krl) {
2529: do_gen_krl(pw, update_krl, argc, argv);
2530: return (0);
2531: }
2532: if (check_krl) {
2533: do_check_krl(pw, argc, argv);
2534: return (0);
1.179 djm 2535: }
1.246 markus 2536: #endif
1.179 djm 2537: if (ca_key_path != NULL) {
2538: if (cert_key_id == NULL)
2539: fatal("Must specify key id (-I) when certifying");
2540: do_ca_sign(pw, argc, argv);
1.12 markus 2541: }
1.182 djm 2542: if (show_cert)
2543: do_show_cert(pw);
1.119 djm 2544: if (delete_host || hash_hosts || find_host)
2545: do_known_hosts(pw, rr_hostname);
1.221 djm 2546: if (pkcs11provider != NULL)
2547: do_download(pw);
1.49 markus 2548: if (print_fingerprint || print_bubblebabble)
1.12 markus 2549: do_fingerprint(pw);
2550: if (change_passphrase)
2551: do_change_passphrase(pw);
2552: if (change_comment)
2553: do_change_comment(pw);
1.246 markus 2554: #ifdef WITH_OPENSSL
1.193 djm 2555: if (convert_to)
2556: do_convert_to(pw);
2557: if (convert_from)
2558: do_convert_from(pw);
1.246 markus 2559: #endif
1.19 markus 2560: if (print_public)
2561: do_print_public(pw);
1.119 djm 2562: if (rr_hostname != NULL) {
1.138 jakob 2563: unsigned int n = 0;
2564:
2565: if (have_identity) {
2566: n = do_print_resource_record(pw,
2567: identity_file, rr_hostname);
1.269 djm 2568: if (n == 0)
2569: fatal("%s: %s", identity_file, strerror(errno));
1.138 jakob 2570: exit(0);
2571: } else {
2572:
2573: n += do_print_resource_record(pw,
2574: _PATH_HOST_RSA_KEY_FILE, rr_hostname);
2575: n += do_print_resource_record(pw,
2576: _PATH_HOST_DSA_KEY_FILE, rr_hostname);
1.214 djm 2577: n += do_print_resource_record(pw,
2578: _PATH_HOST_ECDSA_KEY_FILE, rr_hostname);
1.244 logan 2579: n += do_print_resource_record(pw,
2580: _PATH_HOST_ED25519_KEY_FILE, rr_hostname);
1.138 jakob 2581: if (n == 0)
2582: fatal("no keys found.");
2583: exit(0);
2584: }
1.105 jakob 2585: }
1.107 djm 2586:
1.274 djm 2587: #ifdef WITH_OPENSSL
1.107 djm 2588: if (do_gen_candidates) {
2589: FILE *out = fopen(out_file, "w");
1.111 djm 2590:
1.107 djm 2591: if (out == NULL) {
2592: error("Couldn't open modulus candidate file \"%s\": %s",
2593: out_file, strerror(errno));
2594: return (1);
2595: }
1.130 markus 2596: if (bits == 0)
2597: bits = DEFAULT_BITS;
1.107 djm 2598: if (gen_candidates(out, memory, bits, start) != 0)
1.131 stevesk 2599: fatal("modulus candidate generation failed");
1.107 djm 2600:
2601: return (0);
2602: }
2603:
2604: if (do_screen_candidates) {
2605: FILE *in;
1.225 djm 2606: FILE *out = fopen(out_file, "a");
1.107 djm 2607:
2608: if (have_identity && strcmp(identity_file, "-") != 0) {
2609: if ((in = fopen(identity_file, "r")) == NULL) {
2610: fatal("Couldn't open modulus candidate "
1.111 djm 2611: "file \"%s\": %s", identity_file,
1.107 djm 2612: strerror(errno));
2613: }
2614: } else
2615: in = stdin;
2616:
2617: if (out == NULL) {
2618: fatal("Couldn't open moduli file \"%s\": %s",
2619: out_file, strerror(errno));
2620: }
1.237 markus 2621: if (prime_test(in, out, rounds == 0 ? 100 : rounds,
2622: generator_wanted, checkpoint,
1.215 dtucker 2623: start_lineno, lines_to_process) != 0)
1.131 stevesk 2624: fatal("modulus screening failed");
1.108 markus 2625: return (0);
1.75 markus 2626: }
1.274 djm 2627: #endif
1.12 markus 2628:
1.206 stevesk 2629: if (gen_all_hostkeys) {
2630: do_gen_all_hostkeys(pw);
2631: return (0);
2632: }
2633:
1.133 djm 2634: if (key_type_name == NULL)
1.273 djm 2635: key_type_name = DEFAULT_KEY_TYPE_NAME;
1.133 djm 2636:
1.252 djm 2637: type = sshkey_type_from_name(key_type_name);
1.255 djm 2638: type_bits_valid(type, key_type_name, &bits);
1.206 stevesk 2639:
1.33 markus 2640: if (!quiet)
1.252 djm 2641: printf("Generating public/private %s key pair.\n",
2642: key_type_name);
1.269 djm 2643: if ((r = sshkey_generate(type, bits, &private)) != 0)
2644: fatal("key_generate failed");
2645: if ((r = sshkey_from_private(private, &public)) != 0)
2646: fatal("key_from_private failed: %s\n", ssh_err(r));
1.12 markus 2647:
2648: if (!have_identity)
2649: ask_filename(pw, "Enter file in which to save the key");
2650:
1.132 djm 2651: /* Create ~/.ssh directory if it doesn't already exist. */
1.188 djm 2652: snprintf(dotsshdir, sizeof dotsshdir, "%s/%s",
2653: pw->pw_dir, _PATH_SSH_USER_DIR);
2654: if (strstr(identity_file, dotsshdir) != NULL) {
2655: if (stat(dotsshdir, &st) < 0) {
2656: if (errno != ENOENT) {
2657: error("Could not stat %s: %s", dotsshdir,
2658: strerror(errno));
2659: } else if (mkdir(dotsshdir, 0700) < 0) {
2660: error("Could not create directory '%s': %s",
2661: dotsshdir, strerror(errno));
2662: } else if (!quiet)
2663: printf("Created directory '%s'.\n", dotsshdir);
2664: }
1.12 markus 2665: }
2666: /* If the file already exists, ask the user to confirm. */
2667: if (stat(identity_file, &st) >= 0) {
2668: char yesno[3];
2669: printf("%s already exists.\n", identity_file);
2670: printf("Overwrite (y/n)? ");
2671: fflush(stdout);
2672: if (fgets(yesno, sizeof(yesno), stdin) == NULL)
2673: exit(1);
2674: if (yesno[0] != 'y' && yesno[0] != 'Y')
2675: exit(1);
2676: }
2677: /* Ask for a passphrase (twice). */
2678: if (identity_passphrase)
2679: passphrase1 = xstrdup(identity_passphrase);
2680: else if (identity_new_passphrase)
2681: passphrase1 = xstrdup(identity_new_passphrase);
2682: else {
2683: passphrase_again:
2684: passphrase1 =
1.65 markus 2685: read_passphrase("Enter passphrase (empty for no "
2686: "passphrase): ", RP_ALLOW_STDIN);
2687: passphrase2 = read_passphrase("Enter same passphrase again: ",
2688: RP_ALLOW_STDIN);
1.12 markus 2689: if (strcmp(passphrase1, passphrase2) != 0) {
1.65 markus 2690: /*
2691: * The passphrases do not match. Clear them and
2692: * retry.
2693: */
1.240 djm 2694: explicit_bzero(passphrase1, strlen(passphrase1));
2695: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 2696: free(passphrase1);
2697: free(passphrase2);
1.12 markus 2698: printf("Passphrases do not match. Try again.\n");
2699: goto passphrase_again;
2700: }
2701: /* Clear the other copy of the passphrase. */
1.240 djm 2702: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 2703: free(passphrase2);
1.12 markus 2704: }
2705:
2706: if (identity_comment) {
2707: strlcpy(comment, identity_comment, sizeof(comment));
2708: } else {
1.172 stevesk 2709: /* Create default comment field for the passphrase. */
1.12 markus 2710: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
2711: }
2712:
2713: /* Save the key with the given passphrase and comment. */
1.252 djm 2714: if ((r = sshkey_save_private(private, identity_file, passphrase1,
2715: comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 2716: error("Saving key \"%s\" failed: %s",
1.252 djm 2717: identity_file, ssh_err(r));
1.240 djm 2718: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 2719: free(passphrase1);
1.12 markus 2720: exit(1);
2721: }
2722: /* Clear the passphrase. */
1.240 djm 2723: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 2724: free(passphrase1);
1.12 markus 2725:
2726: /* Clear the private key and the random number generator. */
1.252 djm 2727: sshkey_free(private);
1.12 markus 2728:
2729: if (!quiet)
2730: printf("Your identification has been saved in %s.\n", identity_file);
2731:
2732: strlcat(identity_file, ".pub", sizeof(identity_file));
1.269 djm 2733: if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
2734: fatal("Unable to save public key to %s: %s",
2735: identity_file, strerror(errno));
2736: if ((f = fdopen(fd, "w")) == NULL)
2737: fatal("fdopen %s failed: %s", identity_file, strerror(errno));
1.252 djm 2738: if ((r = sshkey_write(public, f)) != 0)
1.269 djm 2739: error("write key failed: %s", ssh_err(r));
1.19 markus 2740: fprintf(f, " %s\n", comment);
1.12 markus 2741: fclose(f);
2742:
2743: if (!quiet) {
1.259 djm 2744: fp = sshkey_fingerprint(public, fingerprint_hash,
1.251 djm 2745: SSH_FP_DEFAULT);
1.259 djm 2746: ra = sshkey_fingerprint(public, fingerprint_hash,
1.167 grunk 2747: SSH_FP_RANDOMART);
1.259 djm 2748: if (fp == NULL || ra == NULL)
2749: fatal("sshkey_fingerprint failed");
1.19 markus 2750: printf("Your public key has been saved in %s.\n",
2751: identity_file);
1.12 markus 2752: printf("The key fingerprint is:\n");
1.50 markus 2753: printf("%s %s\n", fp, comment);
1.167 grunk 2754: printf("The key's randomart image is:\n");
2755: printf("%s\n", ra);
1.227 djm 2756: free(ra);
2757: free(fp);
1.12 markus 2758: }
1.19 markus 2759:
1.252 djm 2760: sshkey_free(public);
1.12 markus 2761: exit(0);
1.1 deraadt 2762: }
![[BACK]](/icons/back.gif){kind=icon}
Return to ssh-keygen.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh