Annotation of src/usr.bin/ssh/ssh-keygen.c, Revision 1.239
1.239 ! tedu 1: /* $OpenBSD: ssh-keygen.c,v 1.238 2013/12/06 13:39:49 markus 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>
1.151 stevesk 18: #include <sys/param.h>
1.19 markus 19:
20: #include <openssl/evp.h>
21: #include <openssl/pem.h>
1.145 stevesk 22:
1.148 stevesk 23: #include <errno.h>
1.147 stevesk 24: #include <fcntl.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>
1.1 deraadt 30:
31: #include "xmalloc.h"
1.19 markus 32: #include "key.h"
1.53 markus 33: #include "rsa.h"
1.19 markus 34: #include "authfile.h"
35: #include "uuencode.h"
1.32 markus 36: #include "buffer.h"
1.40 markus 37: #include "pathnames.h"
1.41 markus 38: #include "log.h"
1.114 djm 39: #include "misc.h"
1.119 djm 40: #include "match.h"
41: #include "hostfile.h"
1.146 stevesk 42: #include "dns.h"
1.223 djm 43: #include "ssh.h"
1.179 djm 44: #include "ssh2.h"
1.223 djm 45: #include "atomicio.h"
46: #include "krl.h"
1.32 markus 47:
1.177 markus 48: #ifdef ENABLE_PKCS11
49: #include "ssh-pkcs11.h"
1.106 djm 50: #endif
1.66 markus 51:
1.130 markus 52: /* Number of bits in the RSA/DSA key. This value can be set on the command line. */
53: #define DEFAULT_BITS 2048
54: #define DEFAULT_BITS_DSA 1024
1.203 naddy 55: #define DEFAULT_BITS_ECDSA 256
1.130 markus 56: u_int32_t bits = 0;
1.1 deraadt 57:
1.14 markus 58: /*
59: * Flag indicating that we just want to change the passphrase. This can be
60: * set on the command line.
61: */
1.1 deraadt 62: int change_passphrase = 0;
63:
1.14 markus 64: /*
65: * Flag indicating that we just want to change the comment. This can be set
66: * on the command line.
67: */
1.1 deraadt 68: int change_comment = 0;
69:
1.2 provos 70: int quiet = 0;
71:
1.169 grunk 72: int log_level = SYSLOG_LEVEL_INFO;
73:
1.119 djm 74: /* Flag indicating that we want to hash a known_hosts file */
75: int hash_hosts = 0;
76: /* Flag indicating that we want lookup a host in known_hosts file */
77: int find_host = 0;
78: /* Flag indicating that we want to delete a host from a known_hosts file */
79: int delete_host = 0;
80:
1.182 djm 81: /* Flag indicating that we want to show the contents of a certificate */
82: int show_cert = 0;
83:
1.8 markus 84: /* Flag indicating that we just want to see the key fingerprint */
85: int print_fingerprint = 0;
1.49 markus 86: int print_bubblebabble = 0;
1.8 markus 87:
1.10 markus 88: /* The identity file name, given on the command line or entered by the user. */
89: char identity_file[1024];
90: int have_identity = 0;
1.1 deraadt 91:
92: /* This is set to the passphrase if given on the command line. */
93: char *identity_passphrase = NULL;
94:
95: /* This is set to the new passphrase if given on the command line. */
96: char *identity_new_passphrase = NULL;
97:
98: /* This is set to the new comment if given on the command line. */
99: char *identity_comment = NULL;
100:
1.179 djm 101: /* Path to CA key when certifying keys. */
102: char *ca_key_path = NULL;
103:
1.186 djm 104: /* Certificate serial number */
1.220 djm 105: unsigned long long cert_serial = 0;
1.186 djm 106:
1.179 djm 107: /* Key type when certifying */
108: u_int cert_key_type = SSH2_CERT_TYPE_USER;
109:
110: /* "key ID" of signed key */
111: char *cert_key_id = NULL;
112:
113: /* Comma-separated list of principal names for certifying keys */
114: char *cert_principals = NULL;
115:
116: /* Validity period for certificates */
117: u_int64_t cert_valid_from = 0;
118: u_int64_t cert_valid_to = ~0ULL;
119:
1.186 djm 120: /* Certificate options */
1.190 djm 121: #define CERTOPT_X_FWD (1)
122: #define CERTOPT_AGENT_FWD (1<<1)
123: #define CERTOPT_PORT_FWD (1<<2)
124: #define CERTOPT_PTY (1<<3)
125: #define CERTOPT_USER_RC (1<<4)
126: #define CERTOPT_DEFAULT (CERTOPT_X_FWD|CERTOPT_AGENT_FWD| \
127: CERTOPT_PORT_FWD|CERTOPT_PTY|CERTOPT_USER_RC)
128: u_int32_t certflags_flags = CERTOPT_DEFAULT;
129: char *certflags_command = NULL;
130: char *certflags_src_addr = NULL;
1.179 djm 131:
1.193 djm 132: /* Conversion to/from various formats */
133: int convert_to = 0;
134: int convert_from = 0;
135: enum {
136: FMT_RFC4716,
137: FMT_PKCS8,
138: FMT_PEM
139: } convert_format = FMT_RFC4716;
1.19 markus 140: int print_public = 0;
1.105 jakob 141: int print_generic = 0;
1.33 markus 142:
1.87 djm 143: char *key_type_name = NULL;
1.19 markus 144:
1.197 djm 145: /* Load key from this PKCS#11 provider */
146: char *pkcs11provider = NULL;
1.193 djm 147:
1.237 markus 148: /* Use new OpenSSH private key format when writing SSH2 keys instead of PEM */
149: int use_new_format = 0;
150:
151: /* Cipher for new-format private keys */
152: char *new_format_cipher = NULL;
153:
154: /*
155: * Number of KDF rounds to derive new format keys /
156: * number of primality trials when screening moduli.
157: */
158: int rounds = 0;
159:
1.10 markus 160: /* argv0 */
161: extern char *__progname;
1.1 deraadt 162:
1.19 markus 163: char hostname[MAXHOSTNAMELEN];
164:
1.115 djm 165: /* moduli.c */
1.124 avsm 166: int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *);
1.215 dtucker 167: int prime_test(FILE *, FILE *, u_int32_t, u_int32_t, char *, unsigned long,
168: unsigned long);
1.115 djm 169:
1.63 itojun 170: static void
1.209 djm 171: type_bits_valid(int type, u_int32_t *bitsp)
1.206 stevesk 172: {
173: u_int maxbits;
174:
175: if (type == KEY_UNSPEC) {
176: fprintf(stderr, "unknown key type %s\n", key_type_name);
177: exit(1);
178: }
1.209 djm 179: if (*bitsp == 0) {
1.206 stevesk 180: if (type == KEY_DSA)
1.209 djm 181: *bitsp = DEFAULT_BITS_DSA;
1.206 stevesk 182: else if (type == KEY_ECDSA)
1.209 djm 183: *bitsp = DEFAULT_BITS_ECDSA;
1.206 stevesk 184: else
1.209 djm 185: *bitsp = DEFAULT_BITS;
1.206 stevesk 186: }
187: maxbits = (type == KEY_DSA) ?
188: OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS;
1.209 djm 189: if (*bitsp > maxbits) {
1.206 stevesk 190: fprintf(stderr, "key bits exceeds maximum %d\n", maxbits);
191: exit(1);
192: }
1.209 djm 193: if (type == KEY_DSA && *bitsp != 1024)
1.206 stevesk 194: fatal("DSA keys must be 1024 bits");
1.238 markus 195: else if (type != KEY_ECDSA && type != KEY_ED25519 && *bitsp < 768)
1.206 stevesk 196: fatal("Key must at least be 768 bits");
1.209 djm 197: else if (type == KEY_ECDSA && key_ecdsa_bits_to_nid(*bitsp) == -1)
1.206 stevesk 198: fatal("Invalid ECDSA key length - valid lengths are "
199: "256, 384 or 521 bits");
200: }
201:
202: static void
1.10 markus 203: ask_filename(struct passwd *pw, const char *prompt)
1.1 deraadt 204: {
1.12 markus 205: char buf[1024];
1.35 markus 206: char *name = NULL;
207:
1.92 stevesk 208: if (key_type_name == NULL)
1.40 markus 209: name = _PATH_SSH_CLIENT_ID_RSA;
1.140 deraadt 210: else {
1.92 stevesk 211: switch (key_type_from_name(key_type_name)) {
212: case KEY_RSA1:
213: name = _PATH_SSH_CLIENT_IDENTITY;
214: break;
1.186 djm 215: case KEY_DSA_CERT:
216: case KEY_DSA_CERT_V00:
1.92 stevesk 217: case KEY_DSA:
218: name = _PATH_SSH_CLIENT_ID_DSA;
219: break;
1.200 djm 220: case KEY_ECDSA_CERT:
221: case KEY_ECDSA:
222: name = _PATH_SSH_CLIENT_ID_ECDSA;
223: break;
1.186 djm 224: case KEY_RSA_CERT:
225: case KEY_RSA_CERT_V00:
1.92 stevesk 226: case KEY_RSA:
227: name = _PATH_SSH_CLIENT_ID_RSA;
228: break;
1.238 markus 229: case KEY_ED25519:
230: case KEY_ED25519_CERT:
231: name = _PATH_SSH_CLIENT_ID_ED25519;
232: break;
1.92 stevesk 233: default:
1.173 tobias 234: fprintf(stderr, "bad key type\n");
1.92 stevesk 235: exit(1);
236: break;
237: }
1.140 deraadt 238: }
1.35 markus 239: snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name);
1.37 markus 240: fprintf(stderr, "%s (%s): ", prompt, identity_file);
1.12 markus 241: if (fgets(buf, sizeof(buf), stdin) == NULL)
242: exit(1);
1.162 gilles 243: buf[strcspn(buf, "\n")] = '\0';
1.12 markus 244: if (strcmp(buf, "") != 0)
245: strlcpy(identity_file, buf, sizeof(identity_file));
246: have_identity = 1;
1.7 markus 247: }
248:
1.63 itojun 249: static Key *
1.61 markus 250: load_identity(char *filename)
1.19 markus 251: {
1.52 markus 252: char *pass;
253: Key *prv;
254:
1.55 markus 255: prv = key_load_private(filename, "", NULL);
1.52 markus 256: if (prv == NULL) {
1.61 markus 257: if (identity_passphrase)
258: pass = xstrdup(identity_passphrase);
259: else
1.65 markus 260: pass = read_passphrase("Enter passphrase: ",
261: RP_ALLOW_STDIN);
1.52 markus 262: prv = key_load_private(filename, pass, NULL);
1.19 markus 263: memset(pass, 0, strlen(pass));
1.227 djm 264: free(pass);
1.19 markus 265: }
1.52 markus 266: return prv;
1.19 markus 267: }
268:
1.32 markus 269: #define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
1.100 deraadt 270: #define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
1.32 markus 271: #define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
1.42 stevesk 272: #define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
1.19 markus 273:
1.63 itojun 274: static void
1.193 djm 275: do_convert_to_ssh2(struct passwd *pw, Key *k)
1.19 markus 276: {
1.94 markus 277: u_int len;
1.36 markus 278: u_char *blob;
1.176 djm 279: char comment[61];
1.19 markus 280:
1.213 djm 281: if (k->type == KEY_RSA1) {
282: fprintf(stderr, "version 1 keys are not supported\n");
283: exit(1);
284: }
1.81 markus 285: if (key_to_blob(k, &blob, &len) <= 0) {
286: fprintf(stderr, "key_to_blob failed\n");
287: exit(1);
288: }
1.176 djm 289: /* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
290: snprintf(comment, sizeof(comment),
291: "%u-bit %s, converted by %s@%s from OpenSSH",
1.59 markus 292: key_size(k), key_type(k),
1.19 markus 293: pw->pw_name, hostname);
1.176 djm 294:
295: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
296: fprintf(stdout, "Comment: \"%s\"\n", comment);
1.19 markus 297: dump_base64(stdout, blob, len);
1.32 markus 298: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
1.59 markus 299: key_free(k);
1.227 djm 300: free(blob);
1.19 markus 301: exit(0);
302: }
303:
1.63 itojun 304: static void
1.193 djm 305: do_convert_to_pkcs8(Key *k)
306: {
307: switch (key_type_plain(k->type)) {
1.213 djm 308: case KEY_RSA1:
1.193 djm 309: case KEY_RSA:
310: if (!PEM_write_RSA_PUBKEY(stdout, k->rsa))
311: fatal("PEM_write_RSA_PUBKEY failed");
312: break;
313: case KEY_DSA:
314: if (!PEM_write_DSA_PUBKEY(stdout, k->dsa))
315: fatal("PEM_write_DSA_PUBKEY failed");
316: break;
1.200 djm 317: case KEY_ECDSA:
318: if (!PEM_write_EC_PUBKEY(stdout, k->ecdsa))
319: fatal("PEM_write_EC_PUBKEY failed");
320: break;
1.193 djm 321: default:
322: fatal("%s: unsupported key type %s", __func__, key_type(k));
323: }
324: exit(0);
325: }
326:
327: static void
328: do_convert_to_pem(Key *k)
329: {
330: switch (key_type_plain(k->type)) {
1.213 djm 331: case KEY_RSA1:
1.193 djm 332: case KEY_RSA:
333: if (!PEM_write_RSAPublicKey(stdout, k->rsa))
334: fatal("PEM_write_RSAPublicKey failed");
335: break;
336: #if notyet /* OpenSSH 0.9.8 lacks this function */
337: case KEY_DSA:
338: if (!PEM_write_DSAPublicKey(stdout, k->dsa))
339: fatal("PEM_write_DSAPublicKey failed");
340: break;
341: #endif
1.200 djm 342: /* XXX ECDSA? */
1.193 djm 343: default:
344: fatal("%s: unsupported key type %s", __func__, key_type(k));
345: }
346: exit(0);
347: }
348:
349: static void
350: do_convert_to(struct passwd *pw)
351: {
352: Key *k;
353: struct stat st;
354:
355: if (!have_identity)
356: ask_filename(pw, "Enter file in which the key is");
357: if (stat(identity_file, &st) < 0)
358: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
359: if ((k = key_load_public(identity_file, NULL)) == NULL) {
360: if ((k = load_identity(identity_file)) == NULL) {
361: fprintf(stderr, "load failed\n");
362: exit(1);
363: }
364: }
365:
366: switch (convert_format) {
367: case FMT_RFC4716:
368: do_convert_to_ssh2(pw, k);
369: break;
370: case FMT_PKCS8:
371: do_convert_to_pkcs8(k);
372: break;
373: case FMT_PEM:
374: do_convert_to_pem(k);
375: break;
376: default:
377: fatal("%s: unknown key format %d", __func__, convert_format);
378: }
379: exit(0);
380: }
381:
382: static void
1.32 markus 383: buffer_get_bignum_bits(Buffer *b, BIGNUM *value)
384: {
1.116 avsm 385: u_int bignum_bits = buffer_get_int(b);
386: u_int bytes = (bignum_bits + 7) / 8;
1.53 markus 387:
1.32 markus 388: if (buffer_len(b) < bytes)
1.53 markus 389: fatal("buffer_get_bignum_bits: input buffer too small: "
390: "need %d have %d", bytes, buffer_len(b));
1.155 markus 391: if (BN_bin2bn(buffer_ptr(b), bytes, value) == NULL)
392: fatal("buffer_get_bignum_bits: BN_bin2bn failed");
1.32 markus 393: buffer_consume(b, bytes);
394: }
395:
1.63 itojun 396: static Key *
1.93 markus 397: do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
1.32 markus 398: {
399: Buffer b;
400: Key *key = NULL;
1.64 markus 401: char *type, *cipher;
1.69 stevesk 402: u_char *sig, data[] = "abcde12345";
1.62 markus 403: int magic, rlen, ktype, i1, i2, i3, i4;
1.64 markus 404: u_int slen;
1.62 markus 405: u_long e;
1.32 markus 406:
407: buffer_init(&b);
408: buffer_append(&b, blob, blen);
409:
1.160 stevesk 410: magic = buffer_get_int(&b);
1.32 markus 411: if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
412: error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC);
413: buffer_free(&b);
414: return NULL;
415: }
1.62 markus 416: i1 = buffer_get_int(&b);
1.32 markus 417: type = buffer_get_string(&b, NULL);
418: cipher = buffer_get_string(&b, NULL);
1.62 markus 419: i2 = buffer_get_int(&b);
420: i3 = buffer_get_int(&b);
421: i4 = buffer_get_int(&b);
1.158 stevesk 422: debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
1.32 markus 423: if (strcmp(cipher, "none") != 0) {
424: error("unsupported cipher %s", cipher);
1.227 djm 425: free(cipher);
1.32 markus 426: buffer_free(&b);
1.227 djm 427: free(type);
1.32 markus 428: return NULL;
429: }
1.227 djm 430: free(cipher);
1.32 markus 431:
1.53 markus 432: if (strstr(type, "dsa")) {
433: ktype = KEY_DSA;
434: } else if (strstr(type, "rsa")) {
435: ktype = KEY_RSA;
436: } else {
1.118 markus 437: buffer_free(&b);
1.227 djm 438: free(type);
1.32 markus 439: return NULL;
440: }
1.53 markus 441: key = key_new_private(ktype);
1.227 djm 442: free(type);
1.53 markus 443:
444: switch (key->type) {
445: case KEY_DSA:
446: buffer_get_bignum_bits(&b, key->dsa->p);
447: buffer_get_bignum_bits(&b, key->dsa->g);
448: buffer_get_bignum_bits(&b, key->dsa->q);
449: buffer_get_bignum_bits(&b, key->dsa->pub_key);
450: buffer_get_bignum_bits(&b, key->dsa->priv_key);
451: break;
452: case KEY_RSA:
1.160 stevesk 453: e = buffer_get_char(&b);
1.62 markus 454: debug("e %lx", e);
455: if (e < 30) {
456: e <<= 8;
457: e += buffer_get_char(&b);
458: debug("e %lx", e);
459: e <<= 8;
460: e += buffer_get_char(&b);
461: debug("e %lx", e);
462: }
463: if (!BN_set_word(key->rsa->e, e)) {
1.53 markus 464: buffer_free(&b);
465: key_free(key);
466: return NULL;
467: }
468: buffer_get_bignum_bits(&b, key->rsa->d);
469: buffer_get_bignum_bits(&b, key->rsa->n);
470: buffer_get_bignum_bits(&b, key->rsa->iqmp);
471: buffer_get_bignum_bits(&b, key->rsa->q);
472: buffer_get_bignum_bits(&b, key->rsa->p);
1.68 markus 473: rsa_generate_additional_parameters(key->rsa);
1.53 markus 474: break;
475: }
1.32 markus 476: rlen = buffer_len(&b);
1.85 deraadt 477: if (rlen != 0)
1.53 markus 478: error("do_convert_private_ssh2_from_blob: "
479: "remaining bytes in key blob %d", rlen);
1.32 markus 480: buffer_free(&b);
1.64 markus 481:
482: /* try the key */
483: key_sign(key, &sig, &slen, data, sizeof(data));
484: key_verify(key, sig, slen, data, sizeof(data));
1.227 djm 485: free(sig);
1.32 markus 486: return key;
487: }
488:
1.137 dtucker 489: static int
490: get_line(FILE *fp, char *line, size_t len)
491: {
492: int c;
493: size_t pos = 0;
494:
495: line[0] = '\0';
496: while ((c = fgetc(fp)) != EOF) {
497: if (pos >= len - 1) {
498: fprintf(stderr, "input line too long.\n");
499: exit(1);
500: }
1.140 deraadt 501: switch (c) {
1.137 dtucker 502: case '\r':
503: c = fgetc(fp);
504: if (c != EOF && c != '\n' && ungetc(c, fp) == EOF) {
505: fprintf(stderr, "unget: %s\n", strerror(errno));
506: exit(1);
507: }
508: return pos;
509: case '\n':
510: return pos;
511: }
512: line[pos++] = c;
513: line[pos] = '\0';
514: }
1.157 stevesk 515: /* We reached EOF */
516: return -1;
1.137 dtucker 517: }
518:
1.63 itojun 519: static void
1.193 djm 520: do_convert_from_ssh2(struct passwd *pw, Key **k, int *private)
1.19 markus 521: {
522: int blen;
1.98 markus 523: u_int len;
1.137 dtucker 524: char line[1024];
1.80 stevesk 525: u_char blob[8096];
1.19 markus 526: char encoded[8096];
1.193 djm 527: int escaped = 0;
1.19 markus 528: FILE *fp;
529:
1.191 djm 530: if ((fp = fopen(identity_file, "r")) == NULL)
531: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.19 markus 532: encoded[0] = '\0';
1.137 dtucker 533: while ((blen = get_line(fp, line, sizeof(line))) != -1) {
1.228 djm 534: if (blen > 0 && line[blen - 1] == '\\')
1.25 markus 535: escaped++;
1.19 markus 536: if (strncmp(line, "----", 4) == 0 ||
537: strstr(line, ": ") != NULL) {
1.32 markus 538: if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
1.193 djm 539: *private = 1;
1.64 markus 540: if (strstr(line, " END ") != NULL) {
541: break;
542: }
1.60 markus 543: /* fprintf(stderr, "ignore: %s", line); */
1.19 markus 544: continue;
545: }
1.25 markus 546: if (escaped) {
547: escaped--;
1.60 markus 548: /* fprintf(stderr, "escaped: %s", line); */
1.25 markus 549: continue;
1.19 markus 550: }
551: strlcat(encoded, line, sizeof(encoded));
552: }
1.98 markus 553: len = strlen(encoded);
554: if (((len % 4) == 3) &&
555: (encoded[len-1] == '=') &&
556: (encoded[len-2] == '=') &&
557: (encoded[len-3] == '='))
558: encoded[len-3] = '\0';
1.91 stevesk 559: blen = uudecode(encoded, blob, sizeof(blob));
1.19 markus 560: if (blen < 0) {
561: fprintf(stderr, "uudecode failed.\n");
562: exit(1);
563: }
1.193 djm 564: *k = *private ?
1.32 markus 565: do_convert_private_ssh2_from_blob(blob, blen) :
1.33 markus 566: key_from_blob(blob, blen);
1.193 djm 567: if (*k == NULL) {
1.32 markus 568: fprintf(stderr, "decode blob failed.\n");
569: exit(1);
570: }
1.193 djm 571: fclose(fp);
572: }
573:
574: static void
575: do_convert_from_pkcs8(Key **k, int *private)
576: {
577: EVP_PKEY *pubkey;
578: FILE *fp;
579:
580: if ((fp = fopen(identity_file, "r")) == NULL)
581: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
582: if ((pubkey = PEM_read_PUBKEY(fp, NULL, NULL, NULL)) == NULL) {
583: fatal("%s: %s is not a recognised public key format", __func__,
584: identity_file);
585: }
586: fclose(fp);
587: switch (EVP_PKEY_type(pubkey->type)) {
588: case EVP_PKEY_RSA:
589: *k = key_new(KEY_UNSPEC);
590: (*k)->type = KEY_RSA;
591: (*k)->rsa = EVP_PKEY_get1_RSA(pubkey);
592: break;
593: case EVP_PKEY_DSA:
594: *k = key_new(KEY_UNSPEC);
595: (*k)->type = KEY_DSA;
596: (*k)->dsa = EVP_PKEY_get1_DSA(pubkey);
597: break;
1.200 djm 598: case EVP_PKEY_EC:
599: *k = key_new(KEY_UNSPEC);
600: (*k)->type = KEY_ECDSA;
601: (*k)->ecdsa = EVP_PKEY_get1_EC_KEY(pubkey);
1.204 djm 602: (*k)->ecdsa_nid = key_ecdsa_key_to_nid((*k)->ecdsa);
1.200 djm 603: break;
1.193 djm 604: default:
605: fatal("%s: unsupported pubkey type %d", __func__,
606: EVP_PKEY_type(pubkey->type));
607: }
608: EVP_PKEY_free(pubkey);
609: return;
610: }
611:
612: static void
613: do_convert_from_pem(Key **k, int *private)
614: {
615: FILE *fp;
616: RSA *rsa;
617: #ifdef notyet
618: DSA *dsa;
619: #endif
620:
621: if ((fp = fopen(identity_file, "r")) == NULL)
622: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
623: if ((rsa = PEM_read_RSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
624: *k = key_new(KEY_UNSPEC);
625: (*k)->type = KEY_RSA;
626: (*k)->rsa = rsa;
627: fclose(fp);
628: return;
629: }
630: #if notyet /* OpenSSH 0.9.8 lacks this function */
631: rewind(fp);
632: if ((dsa = PEM_read_DSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
633: *k = key_new(KEY_UNSPEC);
634: (*k)->type = KEY_DSA;
635: (*k)->dsa = dsa;
636: fclose(fp);
637: return;
638: }
1.200 djm 639: /* XXX ECDSA */
1.193 djm 640: #endif
641: fatal("%s: unrecognised raw private key format", __func__);
642: }
643:
644: static void
645: do_convert_from(struct passwd *pw)
646: {
647: Key *k = NULL;
1.195 djm 648: int private = 0, ok = 0;
1.193 djm 649: struct stat st;
650:
651: if (!have_identity)
652: ask_filename(pw, "Enter file in which the key is");
653: if (stat(identity_file, &st) < 0)
654: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
655:
656: switch (convert_format) {
657: case FMT_RFC4716:
658: do_convert_from_ssh2(pw, &k, &private);
659: break;
660: case FMT_PKCS8:
661: do_convert_from_pkcs8(&k, &private);
662: break;
663: case FMT_PEM:
664: do_convert_from_pem(&k, &private);
665: break;
666: default:
667: fatal("%s: unknown key format %d", __func__, convert_format);
668: }
669:
670: if (!private)
671: ok = key_write(k, stdout);
672: if (ok)
673: fprintf(stdout, "\n");
674: else {
675: switch (k->type) {
676: case KEY_DSA:
677: ok = PEM_write_DSAPrivateKey(stdout, k->dsa, NULL,
678: NULL, 0, NULL, NULL);
679: break;
1.200 djm 680: case KEY_ECDSA:
681: ok = PEM_write_ECPrivateKey(stdout, k->ecdsa, NULL,
682: NULL, 0, NULL, NULL);
683: break;
1.193 djm 684: case KEY_RSA:
685: ok = PEM_write_RSAPrivateKey(stdout, k->rsa, NULL,
686: NULL, 0, NULL, NULL);
687: break;
688: default:
689: fatal("%s: unsupported key type %s", __func__,
690: key_type(k));
691: }
692: }
693:
1.32 markus 694: if (!ok) {
1.173 tobias 695: fprintf(stderr, "key write failed\n");
1.32 markus 696: exit(1);
697: }
1.19 markus 698: key_free(k);
699: exit(0);
700: }
701:
1.63 itojun 702: static void
1.19 markus 703: do_print_public(struct passwd *pw)
704: {
1.52 markus 705: Key *prv;
1.19 markus 706: struct stat st;
707:
708: if (!have_identity)
709: ask_filename(pw, "Enter file in which the key is");
710: if (stat(identity_file, &st) < 0) {
711: perror(identity_file);
712: exit(1);
713: }
1.61 markus 714: prv = load_identity(identity_file);
1.52 markus 715: if (prv == NULL) {
1.19 markus 716: fprintf(stderr, "load failed\n");
717: exit(1);
718: }
1.52 markus 719: if (!key_write(prv, stdout))
1.19 markus 720: fprintf(stderr, "key_write failed");
1.52 markus 721: key_free(prv);
1.19 markus 722: fprintf(stdout, "\n");
723: exit(0);
724: }
725:
1.66 markus 726: static void
1.197 djm 727: do_download(struct passwd *pw)
1.75 markus 728: {
1.177 markus 729: #ifdef ENABLE_PKCS11
1.97 markus 730: Key **keys = NULL;
1.177 markus 731: int i, nkeys;
1.221 djm 732: enum fp_rep rep;
733: enum fp_type fptype;
734: char *fp, *ra;
1.222 djm 735:
736: fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
737: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
1.75 markus 738:
1.177 markus 739: pkcs11_init(0);
740: nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys);
741: if (nkeys <= 0)
742: fatal("cannot read public key from pkcs11");
743: for (i = 0; i < nkeys; i++) {
1.221 djm 744: if (print_fingerprint) {
745: fp = key_fingerprint(keys[i], fptype, rep);
746: ra = key_fingerprint(keys[i], SSH_FP_MD5,
747: SSH_FP_RANDOMART);
748: printf("%u %s %s (PKCS11 key)\n", key_size(keys[i]),
749: fp, key_type(keys[i]));
750: if (log_level >= SYSLOG_LEVEL_VERBOSE)
751: printf("%s\n", ra);
1.227 djm 752: free(ra);
753: free(fp);
1.221 djm 754: } else {
755: key_write(keys[i], stdout);
756: fprintf(stdout, "\n");
757: }
1.97 markus 758: key_free(keys[i]);
759: }
1.227 djm 760: free(keys);
1.177 markus 761: pkcs11_terminate();
1.75 markus 762: exit(0);
1.177 markus 763: #else
764: fatal("no pkcs11 support");
765: #endif /* ENABLE_PKCS11 */
1.75 markus 766: }
1.66 markus 767:
1.63 itojun 768: static void
1.8 markus 769: do_fingerprint(struct passwd *pw)
770: {
1.15 markus 771: FILE *f;
1.19 markus 772: Key *public;
1.167 grunk 773: char *comment = NULL, *cp, *ep, line[16*1024], *fp, *ra;
1.165 djm 774: int i, skip = 0, num = 0, invalid = 1;
1.84 stevesk 775: enum fp_rep rep;
776: enum fp_type fptype;
1.12 markus 777: struct stat st;
778:
1.52 markus 779: fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
780: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
1.49 markus 781:
1.12 markus 782: if (!have_identity)
783: ask_filename(pw, "Enter file in which the key is");
784: if (stat(identity_file, &st) < 0) {
785: perror(identity_file);
786: exit(1);
787: }
1.52 markus 788: public = key_load_public(identity_file, &comment);
789: if (public != NULL) {
790: fp = key_fingerprint(public, fptype, rep);
1.175 djm 791: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
1.170 grunk 792: printf("%u %s %s (%s)\n", key_size(public), fp, comment,
793: key_type(public));
1.169 grunk 794: if (log_level >= SYSLOG_LEVEL_VERBOSE)
795: printf("%s\n", ra);
1.33 markus 796: key_free(public);
1.227 djm 797: free(comment);
798: free(ra);
799: free(fp);
1.15 markus 800: exit(0);
801: }
1.144 markus 802: if (comment) {
1.227 djm 803: free(comment);
1.144 markus 804: comment = NULL;
805: }
1.15 markus 806:
1.191 djm 807: if ((f = fopen(identity_file, "r")) == NULL)
808: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
809:
810: while (fgets(line, sizeof(line), f)) {
811: if ((cp = strchr(line, '\n')) == NULL) {
812: error("line %d too long: %.40s...",
813: num + 1, line);
814: skip = 1;
815: continue;
816: }
817: num++;
818: if (skip) {
819: skip = 0;
820: continue;
821: }
822: *cp = '\0';
823:
824: /* Skip leading whitespace, empty and comment lines. */
825: for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
826: ;
827: if (!*cp || *cp == '\n' || *cp == '#')
828: continue;
829: i = strtol(cp, &ep, 10);
830: if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) {
831: int quoted = 0;
832: comment = cp;
833: for (; *cp && (quoted || (*cp != ' ' &&
834: *cp != '\t')); cp++) {
835: if (*cp == '\\' && cp[1] == '"')
836: cp++; /* Skip both */
837: else if (*cp == '"')
838: quoted = !quoted;
1.15 markus 839: }
1.191 djm 840: if (!*cp)
1.15 markus 841: continue;
1.191 djm 842: *cp++ = '\0';
843: }
844: ep = cp;
845: public = key_new(KEY_RSA1);
846: if (key_read(public, &cp) != 1) {
847: cp = ep;
848: key_free(public);
849: public = key_new(KEY_UNSPEC);
1.38 markus 850: if (key_read(public, &cp) != 1) {
851: key_free(public);
1.191 djm 852: continue;
1.12 markus 853: }
854: }
1.191 djm 855: comment = *cp ? cp : comment;
856: fp = key_fingerprint(public, fptype, rep);
857: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
858: printf("%u %s %s (%s)\n", key_size(public), fp,
859: comment ? comment : "no comment", key_type(public));
860: if (log_level >= SYSLOG_LEVEL_VERBOSE)
861: printf("%s\n", ra);
1.227 djm 862: free(ra);
863: free(fp);
1.191 djm 864: key_free(public);
865: invalid = 0;
1.15 markus 866: }
1.191 djm 867: fclose(f);
868:
1.15 markus 869: if (invalid) {
1.83 markus 870: printf("%s is not a public key file.\n", identity_file);
1.15 markus 871: exit(1);
1.12 markus 872: }
873: exit(0);
1.8 markus 874: }
875:
1.119 djm 876: static void
1.206 stevesk 877: do_gen_all_hostkeys(struct passwd *pw)
878: {
879: struct {
880: char *key_type;
881: char *key_type_display;
882: char *path;
883: } key_types[] = {
884: { "rsa1", "RSA1", _PATH_HOST_KEY_FILE },
885: { "rsa", "RSA" ,_PATH_HOST_RSA_KEY_FILE },
886: { "dsa", "DSA", _PATH_HOST_DSA_KEY_FILE },
887: { "ecdsa", "ECDSA",_PATH_HOST_ECDSA_KEY_FILE },
1.238 markus 888: { "ed25519", "ED25519",_PATH_HOST_ED25519_KEY_FILE },
1.206 stevesk 889: { NULL, NULL, NULL }
890: };
891:
892: int first = 0;
893: struct stat st;
894: Key *private, *public;
895: char comment[1024];
896: int i, type, fd;
897: FILE *f;
898:
899: for (i = 0; key_types[i].key_type; i++) {
900: if (stat(key_types[i].path, &st) == 0)
901: continue;
902: if (errno != ENOENT) {
903: printf("Could not stat %s: %s", key_types[i].path,
904: strerror(errno));
905: first = 0;
906: continue;
907: }
908:
909: if (first == 0) {
910: first = 1;
911: printf("%s: generating new host keys: ", __progname);
912: }
913: printf("%s ", key_types[i].key_type_display);
914: fflush(stdout);
915: type = key_type_from_name(key_types[i].key_type);
916: strlcpy(identity_file, key_types[i].path, sizeof(identity_file));
917: bits = 0;
918: type_bits_valid(type, &bits);
919: private = key_generate(type, bits);
920: if (private == NULL) {
921: fprintf(stderr, "key_generate failed\n");
922: first = 0;
923: continue;
924: }
925: public = key_from_private(private);
926: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name,
927: hostname);
1.237 markus 928: if (!key_save_private(private, identity_file, "", comment,
929: use_new_format, new_format_cipher, rounds)) {
1.206 stevesk 930: printf("Saving the key failed: %s.\n", identity_file);
931: key_free(private);
932: key_free(public);
933: first = 0;
934: continue;
935: }
936: key_free(private);
937: strlcat(identity_file, ".pub", sizeof(identity_file));
938: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
939: if (fd == -1) {
940: printf("Could not save your public key in %s\n",
941: identity_file);
942: key_free(public);
943: first = 0;
944: continue;
945: }
946: f = fdopen(fd, "w");
947: if (f == NULL) {
948: printf("fdopen %s failed\n", identity_file);
949: key_free(public);
950: first = 0;
951: continue;
952: }
953: if (!key_write(public, f)) {
954: fprintf(stderr, "write key failed\n");
955: key_free(public);
956: first = 0;
957: continue;
958: }
959: fprintf(f, " %s\n", comment);
960: fclose(f);
961: key_free(public);
962:
963: }
964: if (first != 0)
965: printf("\n");
966: }
967:
968: static void
1.179 djm 969: printhost(FILE *f, const char *name, Key *public, int ca, int hash)
1.119 djm 970: {
1.166 djm 971: if (print_fingerprint) {
972: enum fp_rep rep;
973: enum fp_type fptype;
1.167 grunk 974: char *fp, *ra;
1.166 djm 975:
976: fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
977: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
978: fp = key_fingerprint(public, fptype, rep);
1.175 djm 979: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
1.171 sthen 980: printf("%u %s %s (%s)\n", key_size(public), fp, name,
981: key_type(public));
982: if (log_level >= SYSLOG_LEVEL_VERBOSE)
983: printf("%s\n", ra);
1.227 djm 984: free(ra);
985: free(fp);
1.166 djm 986: } else {
987: if (hash && (name = host_hash(name, NULL, 0)) == NULL)
988: fatal("hash_host failed");
1.179 djm 989: fprintf(f, "%s%s%s ", ca ? CA_MARKER : "", ca ? " " : "", name);
1.166 djm 990: if (!key_write(public, f))
991: fatal("key_write failed");
992: fprintf(f, "\n");
993: }
1.119 djm 994: }
995:
996: static void
997: do_known_hosts(struct passwd *pw, const char *name)
998: {
999: FILE *in, *out = stdout;
1.179 djm 1000: Key *pub;
1.119 djm 1001: char *cp, *cp2, *kp, *kp2;
1002: char line[16*1024], tmp[MAXPATHLEN], old[MAXPATHLEN];
1.165 djm 1003: int c, skip = 0, inplace = 0, num = 0, invalid = 0, has_unhashed = 0;
1.179 djm 1004: int ca;
1.233 mikeb 1005: int found_key = 0;
1.119 djm 1006:
1007: if (!have_identity) {
1008: cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
1009: if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
1010: sizeof(identity_file))
1011: fatal("Specified known hosts path too long");
1.227 djm 1012: free(cp);
1.119 djm 1013: have_identity = 1;
1014: }
1015: if ((in = fopen(identity_file, "r")) == NULL)
1.191 djm 1016: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.119 djm 1017:
1018: /*
1019: * Find hosts goes to stdout, hash and deletions happen in-place
1020: * A corner case is ssh-keygen -HF foo, which should go to stdout
1021: */
1022: if (!find_host && (hash_hosts || delete_host)) {
1023: if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
1024: strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
1025: strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
1026: strlcat(old, ".old", sizeof(old)) >= sizeof(old))
1027: fatal("known_hosts path too long");
1028: umask(077);
1029: if ((c = mkstemp(tmp)) == -1)
1030: fatal("mkstemp: %s", strerror(errno));
1031: if ((out = fdopen(c, "w")) == NULL) {
1032: c = errno;
1033: unlink(tmp);
1034: fatal("fdopen: %s", strerror(c));
1035: }
1036: inplace = 1;
1037: }
1038:
1039: while (fgets(line, sizeof(line), in)) {
1.163 chl 1040: if ((cp = strchr(line, '\n')) == NULL) {
1.165 djm 1041: error("line %d too long: %.40s...", num + 1, line);
1.119 djm 1042: skip = 1;
1043: invalid = 1;
1044: continue;
1045: }
1.163 chl 1046: num++;
1.119 djm 1047: if (skip) {
1048: skip = 0;
1049: continue;
1050: }
1.163 chl 1051: *cp = '\0';
1.119 djm 1052:
1053: /* Skip leading whitespace, empty and comment lines. */
1054: for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
1055: ;
1056: if (!*cp || *cp == '\n' || *cp == '#') {
1057: if (inplace)
1058: fprintf(out, "%s\n", cp);
1059: continue;
1060: }
1.179 djm 1061: /* Check whether this is a CA key */
1062: if (strncasecmp(cp, CA_MARKER, sizeof(CA_MARKER) - 1) == 0 &&
1063: (cp[sizeof(CA_MARKER) - 1] == ' ' ||
1064: cp[sizeof(CA_MARKER) - 1] == '\t')) {
1065: ca = 1;
1066: cp += sizeof(CA_MARKER);
1067: } else
1068: ca = 0;
1069:
1.119 djm 1070: /* Find the end of the host name portion. */
1071: for (kp = cp; *kp && *kp != ' ' && *kp != '\t'; kp++)
1072: ;
1.179 djm 1073:
1.119 djm 1074: if (*kp == '\0' || *(kp + 1) == '\0') {
1075: error("line %d missing key: %.40s...",
1076: num, line);
1077: invalid = 1;
1078: continue;
1079: }
1080: *kp++ = '\0';
1081: kp2 = kp;
1082:
1.179 djm 1083: pub = key_new(KEY_RSA1);
1084: if (key_read(pub, &kp) != 1) {
1.119 djm 1085: kp = kp2;
1.179 djm 1086: key_free(pub);
1087: pub = key_new(KEY_UNSPEC);
1088: if (key_read(pub, &kp) != 1) {
1.119 djm 1089: error("line %d invalid key: %.40s...",
1090: num, line);
1.179 djm 1091: key_free(pub);
1.119 djm 1092: invalid = 1;
1093: continue;
1094: }
1095: }
1096:
1097: if (*cp == HASH_DELIM) {
1098: if (find_host || delete_host) {
1099: cp2 = host_hash(name, cp, strlen(cp));
1100: if (cp2 == NULL) {
1101: error("line %d: invalid hashed "
1102: "name: %.64s...", num, line);
1103: invalid = 1;
1104: continue;
1105: }
1106: c = (strcmp(cp2, cp) == 0);
1107: if (find_host && c) {
1.233 mikeb 1108: if (!quiet)
1109: printf("# Host %s found: "
1110: "line %d type %s%s\n", name,
1111: num, key_type(pub),
1112: ca ? " (CA key)" : "");
1.179 djm 1113: printhost(out, cp, pub, ca, 0);
1.233 mikeb 1114: found_key = 1;
1.119 djm 1115: }
1.217 djm 1116: if (delete_host) {
1117: if (!c && !ca)
1118: printhost(out, cp, pub, ca, 0);
1119: else
1120: printf("# Host %s found: "
1121: "line %d type %s\n", name,
1122: num, key_type(pub));
1123: }
1.119 djm 1124: } else if (hash_hosts)
1.179 djm 1125: printhost(out, cp, pub, ca, 0);
1.119 djm 1126: } else {
1127: if (find_host || delete_host) {
1128: c = (match_hostname(name, cp,
1129: strlen(cp)) == 1);
1130: if (find_host && c) {
1.233 mikeb 1131: if (!quiet)
1132: printf("# Host %s found: "
1133: "line %d type %s%s\n", name,
1134: num, key_type(pub),
1135: ca ? " (CA key)" : "");
1.179 djm 1136: printhost(out, name, pub,
1137: ca, hash_hosts && !ca);
1.233 mikeb 1138: found_key = 1;
1.119 djm 1139: }
1.217 djm 1140: if (delete_host) {
1141: if (!c && !ca)
1142: printhost(out, cp, pub, ca, 0);
1143: else
1144: printf("# Host %s found: "
1145: "line %d type %s\n", name,
1146: num, key_type(pub));
1147: }
1.119 djm 1148: } else if (hash_hosts) {
1.121 deraadt 1149: for (cp2 = strsep(&cp, ",");
1.119 djm 1150: cp2 != NULL && *cp2 != '\0';
1.120 djm 1151: cp2 = strsep(&cp, ",")) {
1.179 djm 1152: if (ca) {
1153: fprintf(stderr, "Warning: "
1154: "ignoring CA key for host: "
1155: "%.64s\n", cp2);
1156: printhost(out, cp2, pub, ca, 0);
1157: } else if (strcspn(cp2, "*?!") !=
1158: strlen(cp2)) {
1.120 djm 1159: fprintf(stderr, "Warning: "
1160: "ignoring host name with "
1161: "metacharacters: %.64s\n",
1162: cp2);
1.179 djm 1163: printhost(out, cp2, pub, ca, 0);
1164: } else
1165: printhost(out, cp2, pub, ca, 1);
1.120 djm 1166: }
1.119 djm 1167: has_unhashed = 1;
1168: }
1169: }
1.179 djm 1170: key_free(pub);
1.119 djm 1171: }
1172: fclose(in);
1173:
1174: if (invalid) {
1.165 djm 1175: fprintf(stderr, "%s is not a valid known_hosts file.\n",
1.119 djm 1176: identity_file);
1177: if (inplace) {
1178: fprintf(stderr, "Not replacing existing known_hosts "
1.122 markus 1179: "file because of errors\n");
1.119 djm 1180: fclose(out);
1181: unlink(tmp);
1182: }
1183: exit(1);
1184: }
1185:
1186: if (inplace) {
1187: fclose(out);
1188:
1189: /* Backup existing file */
1190: if (unlink(old) == -1 && errno != ENOENT)
1191: fatal("unlink %.100s: %s", old, strerror(errno));
1192: if (link(identity_file, old) == -1)
1193: fatal("link %.100s to %.100s: %s", identity_file, old,
1194: strerror(errno));
1195: /* Move new one into place */
1196: if (rename(tmp, identity_file) == -1) {
1197: error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
1198: strerror(errno));
1199: unlink(tmp);
1200: unlink(old);
1201: exit(1);
1202: }
1203:
1204: fprintf(stderr, "%s updated.\n", identity_file);
1205: fprintf(stderr, "Original contents retained as %s\n", old);
1206: if (has_unhashed) {
1207: fprintf(stderr, "WARNING: %s contains unhashed "
1208: "entries\n", old);
1209: fprintf(stderr, "Delete this file to ensure privacy "
1.128 djm 1210: "of hostnames\n");
1.119 djm 1211: }
1212: }
1213:
1.233 mikeb 1214: exit (find_host && !found_key);
1.119 djm 1215: }
1216:
1.13 deraadt 1217: /*
1218: * Perform changing a passphrase. The argument is the passwd structure
1219: * for the current user.
1220: */
1.63 itojun 1221: static void
1.7 markus 1222: do_change_passphrase(struct passwd *pw)
1223: {
1.12 markus 1224: char *comment;
1225: char *old_passphrase, *passphrase1, *passphrase2;
1226: struct stat st;
1.19 markus 1227: Key *private;
1.12 markus 1228:
1229: if (!have_identity)
1230: ask_filename(pw, "Enter file in which the key is");
1231: if (stat(identity_file, &st) < 0) {
1232: perror(identity_file);
1233: exit(1);
1234: }
1235: /* Try to load the file with empty passphrase. */
1.52 markus 1236: private = key_load_private(identity_file, "", &comment);
1237: if (private == NULL) {
1.12 markus 1238: if (identity_passphrase)
1239: old_passphrase = xstrdup(identity_passphrase);
1240: else
1.65 markus 1241: old_passphrase =
1242: read_passphrase("Enter old passphrase: ",
1243: RP_ALLOW_STDIN);
1244: private = key_load_private(identity_file, old_passphrase,
1245: &comment);
1.52 markus 1246: memset(old_passphrase, 0, strlen(old_passphrase));
1.227 djm 1247: free(old_passphrase);
1.52 markus 1248: if (private == NULL) {
1.12 markus 1249: printf("Bad passphrase.\n");
1250: exit(1);
1251: }
1252: }
1253: printf("Key has comment '%s'\n", comment);
1254:
1255: /* Ask the new passphrase (twice). */
1256: if (identity_new_passphrase) {
1257: passphrase1 = xstrdup(identity_new_passphrase);
1258: passphrase2 = NULL;
1259: } else {
1260: passphrase1 =
1.65 markus 1261: read_passphrase("Enter new passphrase (empty for no "
1262: "passphrase): ", RP_ALLOW_STDIN);
1263: passphrase2 = read_passphrase("Enter same passphrase again: ",
1.86 deraadt 1264: RP_ALLOW_STDIN);
1.12 markus 1265:
1266: /* Verify that they are the same. */
1267: if (strcmp(passphrase1, passphrase2) != 0) {
1268: memset(passphrase1, 0, strlen(passphrase1));
1269: memset(passphrase2, 0, strlen(passphrase2));
1.227 djm 1270: free(passphrase1);
1271: free(passphrase2);
1.12 markus 1272: printf("Pass phrases do not match. Try again.\n");
1273: exit(1);
1274: }
1275: /* Destroy the other copy. */
1276: memset(passphrase2, 0, strlen(passphrase2));
1.227 djm 1277: free(passphrase2);
1.12 markus 1278: }
1279:
1280: /* Save the file using the new passphrase. */
1.237 markus 1281: if (!key_save_private(private, identity_file, passphrase1, comment,
1282: use_new_format, new_format_cipher, rounds)) {
1.56 markus 1283: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 1284: memset(passphrase1, 0, strlen(passphrase1));
1.227 djm 1285: free(passphrase1);
1.19 markus 1286: key_free(private);
1.227 djm 1287: free(comment);
1.12 markus 1288: exit(1);
1289: }
1290: /* Destroy the passphrase and the copy of the key in memory. */
1291: memset(passphrase1, 0, strlen(passphrase1));
1.227 djm 1292: free(passphrase1);
1.19 markus 1293: key_free(private); /* Destroys contents */
1.227 djm 1294: free(comment);
1.1 deraadt 1295:
1.12 markus 1296: printf("Your identification has been saved with the new passphrase.\n");
1297: exit(0);
1.1 deraadt 1298: }
1299:
1.105 jakob 1300: /*
1301: * Print the SSHFP RR.
1302: */
1.138 jakob 1303: static int
1304: do_print_resource_record(struct passwd *pw, char *fname, char *hname)
1.105 jakob 1305: {
1306: Key *public;
1307: char *comment = NULL;
1308: struct stat st;
1309:
1.138 jakob 1310: if (fname == NULL)
1.229 djm 1311: fatal("%s: no filename", __func__);
1.138 jakob 1312: if (stat(fname, &st) < 0) {
1313: if (errno == ENOENT)
1314: return 0;
1315: perror(fname);
1.105 jakob 1316: exit(1);
1317: }
1.138 jakob 1318: public = key_load_public(fname, &comment);
1.105 jakob 1319: if (public != NULL) {
1.116 avsm 1320: export_dns_rr(hname, public, stdout, print_generic);
1.105 jakob 1321: key_free(public);
1.227 djm 1322: free(comment);
1.138 jakob 1323: return 1;
1.105 jakob 1324: }
1325: if (comment)
1.227 djm 1326: free(comment);
1.105 jakob 1327:
1.138 jakob 1328: printf("failed to read v2 public key from %s.\n", fname);
1.105 jakob 1329: exit(1);
1330: }
1331:
1.13 deraadt 1332: /*
1333: * Change the comment of a private key file.
1334: */
1.63 itojun 1335: static void
1.2 provos 1336: do_change_comment(struct passwd *pw)
1.1 deraadt 1337: {
1.46 deraadt 1338: char new_comment[1024], *comment, *passphrase;
1.52 markus 1339: Key *private;
1340: Key *public;
1.12 markus 1341: struct stat st;
1342: FILE *f;
1.46 deraadt 1343: int fd;
1.12 markus 1344:
1345: if (!have_identity)
1346: ask_filename(pw, "Enter file in which the key is");
1347: if (stat(identity_file, &st) < 0) {
1348: perror(identity_file);
1349: exit(1);
1350: }
1.52 markus 1351: private = key_load_private(identity_file, "", &comment);
1352: if (private == NULL) {
1.12 markus 1353: if (identity_passphrase)
1354: passphrase = xstrdup(identity_passphrase);
1355: else if (identity_new_passphrase)
1356: passphrase = xstrdup(identity_new_passphrase);
1357: else
1.65 markus 1358: passphrase = read_passphrase("Enter passphrase: ",
1359: RP_ALLOW_STDIN);
1.12 markus 1360: /* Try to load using the passphrase. */
1.52 markus 1361: private = key_load_private(identity_file, passphrase, &comment);
1362: if (private == NULL) {
1.12 markus 1363: memset(passphrase, 0, strlen(passphrase));
1.227 djm 1364: free(passphrase);
1.12 markus 1365: printf("Bad passphrase.\n");
1366: exit(1);
1367: }
1.52 markus 1368: } else {
1369: passphrase = xstrdup("");
1.12 markus 1370: }
1.52 markus 1371: if (private->type != KEY_RSA1) {
1372: fprintf(stderr, "Comments are only supported for RSA1 keys.\n");
1373: key_free(private);
1374: exit(1);
1.86 deraadt 1375: }
1.12 markus 1376: printf("Key now has comment '%s'\n", comment);
1377:
1378: if (identity_comment) {
1379: strlcpy(new_comment, identity_comment, sizeof(new_comment));
1380: } else {
1381: printf("Enter new comment: ");
1382: fflush(stdout);
1383: if (!fgets(new_comment, sizeof(new_comment), stdin)) {
1384: memset(passphrase, 0, strlen(passphrase));
1.19 markus 1385: key_free(private);
1.12 markus 1386: exit(1);
1387: }
1.162 gilles 1388: new_comment[strcspn(new_comment, "\n")] = '\0';
1.12 markus 1389: }
1390:
1391: /* Save the file using the new passphrase. */
1.237 markus 1392: if (!key_save_private(private, identity_file, passphrase, new_comment,
1393: use_new_format, new_format_cipher, rounds)) {
1.56 markus 1394: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 1395: memset(passphrase, 0, strlen(passphrase));
1.227 djm 1396: free(passphrase);
1.19 markus 1397: key_free(private);
1.227 djm 1398: free(comment);
1.12 markus 1399: exit(1);
1400: }
1401: memset(passphrase, 0, strlen(passphrase));
1.227 djm 1402: free(passphrase);
1.52 markus 1403: public = key_from_private(private);
1.19 markus 1404: key_free(private);
1.12 markus 1405:
1406: strlcat(identity_file, ".pub", sizeof(identity_file));
1.46 deraadt 1407: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1408: if (fd == -1) {
1.12 markus 1409: printf("Could not save your public key in %s\n", identity_file);
1410: exit(1);
1411: }
1.46 deraadt 1412: f = fdopen(fd, "w");
1413: if (f == NULL) {
1.173 tobias 1414: printf("fdopen %s failed\n", identity_file);
1.46 deraadt 1415: exit(1);
1416: }
1.19 markus 1417: if (!key_write(public, f))
1.173 tobias 1418: fprintf(stderr, "write key failed\n");
1.19 markus 1419: key_free(public);
1420: fprintf(f, " %s\n", new_comment);
1.12 markus 1421: fclose(f);
1.1 deraadt 1422:
1.227 djm 1423: free(comment);
1.1 deraadt 1424:
1.12 markus 1425: printf("The comment in your key file has been changed.\n");
1426: exit(0);
1.1 deraadt 1427: }
1428:
1.179 djm 1429: static const char *
1.182 djm 1430: fmt_validity(u_int64_t valid_from, u_int64_t valid_to)
1.179 djm 1431: {
1432: char from[32], to[32];
1433: static char ret[64];
1434: time_t tt;
1435: struct tm *tm;
1436:
1437: *from = *to = '\0';
1.182 djm 1438: if (valid_from == 0 && valid_to == 0xffffffffffffffffULL)
1.179 djm 1439: return "forever";
1440:
1.182 djm 1441: if (valid_from != 0) {
1.179 djm 1442: /* XXX revisit INT_MAX in 2038 :) */
1.182 djm 1443: tt = valid_from > INT_MAX ? INT_MAX : valid_from;
1.179 djm 1444: tm = localtime(&tt);
1445: strftime(from, sizeof(from), "%Y-%m-%dT%H:%M:%S", tm);
1446: }
1.182 djm 1447: if (valid_to != 0xffffffffffffffffULL) {
1.179 djm 1448: /* XXX revisit INT_MAX in 2038 :) */
1.182 djm 1449: tt = valid_to > INT_MAX ? INT_MAX : valid_to;
1.179 djm 1450: tm = localtime(&tt);
1451: strftime(to, sizeof(to), "%Y-%m-%dT%H:%M:%S", tm);
1452: }
1453:
1.182 djm 1454: if (valid_from == 0) {
1.179 djm 1455: snprintf(ret, sizeof(ret), "before %s", to);
1456: return ret;
1457: }
1.182 djm 1458: if (valid_to == 0xffffffffffffffffULL) {
1.179 djm 1459: snprintf(ret, sizeof(ret), "after %s", from);
1460: return ret;
1461: }
1462:
1463: snprintf(ret, sizeof(ret), "from %s to %s", from, to);
1464: return ret;
1465: }
1466:
1467: static void
1.186 djm 1468: add_flag_option(Buffer *c, const char *name)
1.179 djm 1469: {
1470: debug3("%s: %s", __func__, name);
1471: buffer_put_cstring(c, name);
1472: buffer_put_string(c, NULL, 0);
1473: }
1474:
1475: static void
1.186 djm 1476: add_string_option(Buffer *c, const char *name, const char *value)
1.179 djm 1477: {
1478: Buffer b;
1479:
1480: debug3("%s: %s=%s", __func__, name, value);
1481: buffer_init(&b);
1482: buffer_put_cstring(&b, value);
1483:
1484: buffer_put_cstring(c, name);
1485: buffer_put_string(c, buffer_ptr(&b), buffer_len(&b));
1486:
1487: buffer_free(&b);
1488: }
1489:
1.190 djm 1490: #define OPTIONS_CRITICAL 1
1491: #define OPTIONS_EXTENSIONS 2
1.179 djm 1492: static void
1.190 djm 1493: prepare_options_buf(Buffer *c, int which)
1.179 djm 1494: {
1495: buffer_clear(c);
1.196 djm 1496: if ((which & OPTIONS_CRITICAL) != 0 &&
1497: certflags_command != NULL)
1498: add_string_option(c, "force-command", certflags_command);
1.190 djm 1499: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.210 djm 1500: (certflags_flags & CERTOPT_X_FWD) != 0)
1501: add_flag_option(c, "permit-X11-forwarding");
1502: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.190 djm 1503: (certflags_flags & CERTOPT_AGENT_FWD) != 0)
1.186 djm 1504: add_flag_option(c, "permit-agent-forwarding");
1.190 djm 1505: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1506: (certflags_flags & CERTOPT_PORT_FWD) != 0)
1.186 djm 1507: add_flag_option(c, "permit-port-forwarding");
1.190 djm 1508: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1509: (certflags_flags & CERTOPT_PTY) != 0)
1.186 djm 1510: add_flag_option(c, "permit-pty");
1.190 djm 1511: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1512: (certflags_flags & CERTOPT_USER_RC) != 0)
1.186 djm 1513: add_flag_option(c, "permit-user-rc");
1.190 djm 1514: if ((which & OPTIONS_CRITICAL) != 0 &&
1515: certflags_src_addr != NULL)
1516: add_string_option(c, "source-address", certflags_src_addr);
1.179 djm 1517: }
1518:
1.197 djm 1519: static Key *
1520: load_pkcs11_key(char *path)
1521: {
1522: #ifdef ENABLE_PKCS11
1523: Key **keys = NULL, *public, *private = NULL;
1524: int i, nkeys;
1525:
1526: if ((public = key_load_public(path, NULL)) == NULL)
1527: fatal("Couldn't load CA public key \"%s\"", path);
1528:
1529: nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, &keys);
1530: debug3("%s: %d keys", __func__, nkeys);
1531: if (nkeys <= 0)
1532: fatal("cannot read public key from pkcs11");
1533: for (i = 0; i < nkeys; i++) {
1534: if (key_equal_public(public, keys[i])) {
1535: private = keys[i];
1536: continue;
1537: }
1538: key_free(keys[i]);
1539: }
1.227 djm 1540: free(keys);
1.197 djm 1541: key_free(public);
1542: return private;
1543: #else
1544: fatal("no pkcs11 support");
1545: #endif /* ENABLE_PKCS11 */
1546: }
1547:
1.179 djm 1548: static void
1549: do_ca_sign(struct passwd *pw, int argc, char **argv)
1550: {
1551: int i, fd;
1552: u_int n;
1553: Key *ca, *public;
1554: char *otmp, *tmp, *cp, *out, *comment, **plist = NULL;
1555: FILE *f;
1.186 djm 1556: int v00 = 0; /* legacy keys */
1.179 djm 1557:
1.186 djm 1558: if (key_type_name != NULL) {
1559: switch (key_type_from_name(key_type_name)) {
1560: case KEY_RSA_CERT_V00:
1561: case KEY_DSA_CERT_V00:
1562: v00 = 1;
1563: break;
1564: case KEY_UNSPEC:
1565: if (strcasecmp(key_type_name, "v00") == 0) {
1566: v00 = 1;
1567: break;
1568: } else if (strcasecmp(key_type_name, "v01") == 0)
1569: break;
1570: /* FALLTHROUGH */
1571: default:
1572: fprintf(stderr, "unknown key type %s\n", key_type_name);
1573: exit(1);
1574: }
1575: }
1576:
1.197 djm 1577: pkcs11_init(1);
1578: tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
1579: if (pkcs11provider != NULL) {
1580: if ((ca = load_pkcs11_key(tmp)) == NULL)
1581: fatal("No PKCS#11 key matching %s found", ca_key_path);
1582: } else if ((ca = load_identity(tmp)) == NULL)
1583: fatal("Couldn't load CA key \"%s\"", tmp);
1.227 djm 1584: free(tmp);
1.197 djm 1585:
1.179 djm 1586: for (i = 0; i < argc; i++) {
1587: /* Split list of principals */
1588: n = 0;
1589: if (cert_principals != NULL) {
1590: otmp = tmp = xstrdup(cert_principals);
1591: plist = NULL;
1592: for (; (cp = strsep(&tmp, ",")) != NULL; n++) {
1593: plist = xrealloc(plist, n + 1, sizeof(*plist));
1594: if (*(plist[n] = xstrdup(cp)) == '\0')
1595: fatal("Empty principal name");
1596: }
1.227 djm 1597: free(otmp);
1.179 djm 1598: }
1599:
1600: tmp = tilde_expand_filename(argv[i], pw->pw_uid);
1601: if ((public = key_load_public(tmp, &comment)) == NULL)
1602: fatal("%s: unable to open \"%s\"", __func__, tmp);
1.200 djm 1603: if (public->type != KEY_RSA && public->type != KEY_DSA &&
1.238 markus 1604: public->type != KEY_ECDSA && public->type != KEY_ED25519)
1.179 djm 1605: fatal("%s: key \"%s\" type %s cannot be certified",
1606: __func__, tmp, key_type(public));
1607:
1608: /* Prepare certificate to sign */
1.186 djm 1609: if (key_to_certified(public, v00) != 0)
1.179 djm 1610: fatal("Could not upgrade key %s to certificate", tmp);
1611: public->cert->type = cert_key_type;
1.186 djm 1612: public->cert->serial = (u_int64_t)cert_serial;
1.179 djm 1613: public->cert->key_id = xstrdup(cert_key_id);
1614: public->cert->nprincipals = n;
1615: public->cert->principals = plist;
1616: public->cert->valid_after = cert_valid_from;
1617: public->cert->valid_before = cert_valid_to;
1.190 djm 1618: if (v00) {
1619: prepare_options_buf(&public->cert->critical,
1620: OPTIONS_CRITICAL|OPTIONS_EXTENSIONS);
1621: } else {
1622: prepare_options_buf(&public->cert->critical,
1623: OPTIONS_CRITICAL);
1624: prepare_options_buf(&public->cert->extensions,
1625: OPTIONS_EXTENSIONS);
1626: }
1.179 djm 1627: public->cert->signature_key = key_from_private(ca);
1628:
1629: if (key_certify(public, ca) != 0)
1630: fatal("Couldn't not certify key %s", tmp);
1631:
1632: if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0)
1633: *cp = '\0';
1634: xasprintf(&out, "%s-cert.pub", tmp);
1.227 djm 1635: free(tmp);
1.179 djm 1636:
1637: if ((fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
1638: fatal("Could not open \"%s\" for writing: %s", out,
1639: strerror(errno));
1640: if ((f = fdopen(fd, "w")) == NULL)
1641: fatal("%s: fdopen: %s", __func__, strerror(errno));
1642: if (!key_write(public, f))
1643: fatal("Could not write certified key to %s", out);
1644: fprintf(f, " %s\n", comment);
1645: fclose(f);
1646:
1.186 djm 1647: if (!quiet) {
1648: logit("Signed %s key %s: id \"%s\" serial %llu%s%s "
1649: "valid %s", key_cert_type(public),
1.205 djm 1650: out, public->cert->key_id,
1651: (unsigned long long)public->cert->serial,
1.179 djm 1652: cert_principals != NULL ? " for " : "",
1653: cert_principals != NULL ? cert_principals : "",
1.182 djm 1654: fmt_validity(cert_valid_from, cert_valid_to));
1.186 djm 1655: }
1.179 djm 1656:
1657: key_free(public);
1.227 djm 1658: free(out);
1.179 djm 1659: }
1.197 djm 1660: pkcs11_terminate();
1.179 djm 1661: exit(0);
1662: }
1663:
1664: static u_int64_t
1665: parse_relative_time(const char *s, time_t now)
1666: {
1667: int64_t mul, secs;
1668:
1669: mul = *s == '-' ? -1 : 1;
1670:
1671: if ((secs = convtime(s + 1)) == -1)
1672: fatal("Invalid relative certificate time %s", s);
1673: if (mul == -1 && secs > now)
1674: fatal("Certificate time %s cannot be represented", s);
1675: return now + (u_int64_t)(secs * mul);
1676: }
1677:
1678: static u_int64_t
1679: parse_absolute_time(const char *s)
1680: {
1681: struct tm tm;
1682: time_t tt;
1.180 djm 1683: char buf[32], *fmt;
1.179 djm 1684:
1.180 djm 1685: /*
1686: * POSIX strptime says "The application shall ensure that there
1687: * is white-space or other non-alphanumeric characters between
1688: * any two conversion specifications" so arrange things this way.
1689: */
1690: switch (strlen(s)) {
1691: case 8:
1.184 djm 1692: fmt = "%Y-%m-%d";
1693: snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2s", s, s + 4, s + 6);
1.180 djm 1694: break;
1695: case 14:
1.184 djm 1696: fmt = "%Y-%m-%dT%H:%M:%S";
1697: snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2sT%.2s:%.2s:%.2s",
1.180 djm 1698: s, s + 4, s + 6, s + 8, s + 10, s + 12);
1699: break;
1700: default:
1.179 djm 1701: fatal("Invalid certificate time format %s", s);
1.180 djm 1702: }
1.179 djm 1703:
1.239 ! tedu 1704: memset(&tm, 0, sizeof(tm));
1.180 djm 1705: if (strptime(buf, fmt, &tm) == NULL)
1.179 djm 1706: fatal("Invalid certificate time %s", s);
1707: if ((tt = mktime(&tm)) < 0)
1708: fatal("Certificate time %s cannot be represented", s);
1709: return (u_int64_t)tt;
1710: }
1711:
1712: static void
1713: parse_cert_times(char *timespec)
1714: {
1715: char *from, *to;
1716: time_t now = time(NULL);
1717: int64_t secs;
1718:
1719: /* +timespec relative to now */
1720: if (*timespec == '+' && strchr(timespec, ':') == NULL) {
1721: if ((secs = convtime(timespec + 1)) == -1)
1722: fatal("Invalid relative certificate life %s", timespec);
1723: cert_valid_to = now + secs;
1724: /*
1725: * Backdate certificate one minute to avoid problems on hosts
1726: * with poorly-synchronised clocks.
1727: */
1728: cert_valid_from = ((now - 59)/ 60) * 60;
1729: return;
1730: }
1731:
1732: /*
1733: * from:to, where
1734: * from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
1735: * to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
1736: */
1737: from = xstrdup(timespec);
1738: to = strchr(from, ':');
1739: if (to == NULL || from == to || *(to + 1) == '\0')
1.181 djm 1740: fatal("Invalid certificate life specification %s", timespec);
1.179 djm 1741: *to++ = '\0';
1742:
1743: if (*from == '-' || *from == '+')
1744: cert_valid_from = parse_relative_time(from, now);
1745: else
1746: cert_valid_from = parse_absolute_time(from);
1747:
1748: if (*to == '-' || *to == '+')
1.235 djm 1749: cert_valid_to = parse_relative_time(to, now);
1.179 djm 1750: else
1751: cert_valid_to = parse_absolute_time(to);
1752:
1753: if (cert_valid_to <= cert_valid_from)
1754: fatal("Empty certificate validity interval");
1.227 djm 1755: free(from);
1.179 djm 1756: }
1757:
1758: static void
1.186 djm 1759: add_cert_option(char *opt)
1.179 djm 1760: {
1761: char *val;
1762:
1.208 stevesk 1763: if (strcasecmp(opt, "clear") == 0)
1.190 djm 1764: certflags_flags = 0;
1.179 djm 1765: else if (strcasecmp(opt, "no-x11-forwarding") == 0)
1.190 djm 1766: certflags_flags &= ~CERTOPT_X_FWD;
1.179 djm 1767: else if (strcasecmp(opt, "permit-x11-forwarding") == 0)
1.190 djm 1768: certflags_flags |= CERTOPT_X_FWD;
1.179 djm 1769: else if (strcasecmp(opt, "no-agent-forwarding") == 0)
1.190 djm 1770: certflags_flags &= ~CERTOPT_AGENT_FWD;
1.179 djm 1771: else if (strcasecmp(opt, "permit-agent-forwarding") == 0)
1.190 djm 1772: certflags_flags |= CERTOPT_AGENT_FWD;
1.179 djm 1773: else if (strcasecmp(opt, "no-port-forwarding") == 0)
1.190 djm 1774: certflags_flags &= ~CERTOPT_PORT_FWD;
1.179 djm 1775: else if (strcasecmp(opt, "permit-port-forwarding") == 0)
1.190 djm 1776: certflags_flags |= CERTOPT_PORT_FWD;
1.179 djm 1777: else if (strcasecmp(opt, "no-pty") == 0)
1.190 djm 1778: certflags_flags &= ~CERTOPT_PTY;
1.179 djm 1779: else if (strcasecmp(opt, "permit-pty") == 0)
1.190 djm 1780: certflags_flags |= CERTOPT_PTY;
1.179 djm 1781: else if (strcasecmp(opt, "no-user-rc") == 0)
1.190 djm 1782: certflags_flags &= ~CERTOPT_USER_RC;
1.179 djm 1783: else if (strcasecmp(opt, "permit-user-rc") == 0)
1.190 djm 1784: certflags_flags |= CERTOPT_USER_RC;
1.179 djm 1785: else if (strncasecmp(opt, "force-command=", 14) == 0) {
1786: val = opt + 14;
1787: if (*val == '\0')
1.186 djm 1788: fatal("Empty force-command option");
1.190 djm 1789: if (certflags_command != NULL)
1.179 djm 1790: fatal("force-command already specified");
1.190 djm 1791: certflags_command = xstrdup(val);
1.179 djm 1792: } else if (strncasecmp(opt, "source-address=", 15) == 0) {
1793: val = opt + 15;
1794: if (*val == '\0')
1.186 djm 1795: fatal("Empty source-address option");
1.190 djm 1796: if (certflags_src_addr != NULL)
1.179 djm 1797: fatal("source-address already specified");
1798: if (addr_match_cidr_list(NULL, val) != 0)
1799: fatal("Invalid source-address list");
1.190 djm 1800: certflags_src_addr = xstrdup(val);
1.179 djm 1801: } else
1.186 djm 1802: fatal("Unsupported certificate option \"%s\"", opt);
1.179 djm 1803: }
1804:
1.63 itojun 1805: static void
1.192 djm 1806: show_options(const Buffer *optbuf, int v00, int in_critical)
1807: {
1.228 djm 1808: char *name;
1809: u_char *data;
1.192 djm 1810: u_int dlen;
1811: Buffer options, option;
1812:
1813: buffer_init(&options);
1814: buffer_append(&options, buffer_ptr(optbuf), buffer_len(optbuf));
1815:
1816: buffer_init(&option);
1817: while (buffer_len(&options) != 0) {
1818: name = buffer_get_string(&options, NULL);
1819: data = buffer_get_string_ptr(&options, &dlen);
1820: buffer_append(&option, data, dlen);
1821: printf(" %s", name);
1822: if ((v00 || !in_critical) &&
1823: (strcmp(name, "permit-X11-forwarding") == 0 ||
1824: strcmp(name, "permit-agent-forwarding") == 0 ||
1825: strcmp(name, "permit-port-forwarding") == 0 ||
1826: strcmp(name, "permit-pty") == 0 ||
1827: strcmp(name, "permit-user-rc") == 0))
1828: printf("\n");
1829: else if ((v00 || in_critical) &&
1830: (strcmp(name, "force-command") == 0 ||
1831: strcmp(name, "source-address") == 0)) {
1832: data = buffer_get_string(&option, NULL);
1833: printf(" %s\n", data);
1.227 djm 1834: free(data);
1.192 djm 1835: } else {
1836: printf(" UNKNOWN OPTION (len %u)\n",
1837: buffer_len(&option));
1838: buffer_clear(&option);
1839: }
1.227 djm 1840: free(name);
1.192 djm 1841: if (buffer_len(&option) != 0)
1842: fatal("Option corrupt: extra data at end");
1843: }
1844: buffer_free(&option);
1845: buffer_free(&options);
1846: }
1847:
1848: static void
1.182 djm 1849: do_show_cert(struct passwd *pw)
1850: {
1851: Key *key;
1852: struct stat st;
1853: char *key_fp, *ca_fp;
1.192 djm 1854: u_int i, v00;
1.182 djm 1855:
1856: if (!have_identity)
1857: ask_filename(pw, "Enter file in which the key is");
1.191 djm 1858: if (stat(identity_file, &st) < 0)
1859: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.182 djm 1860: if ((key = key_load_public(identity_file, NULL)) == NULL)
1861: fatal("%s is not a public key", identity_file);
1862: if (!key_is_cert(key))
1863: fatal("%s is not a certificate", identity_file);
1.186 djm 1864: v00 = key->type == KEY_RSA_CERT_V00 || key->type == KEY_DSA_CERT_V00;
1865:
1.182 djm 1866: key_fp = key_fingerprint(key, SSH_FP_MD5, SSH_FP_HEX);
1867: ca_fp = key_fingerprint(key->cert->signature_key,
1868: SSH_FP_MD5, SSH_FP_HEX);
1869:
1870: printf("%s:\n", identity_file);
1.186 djm 1871: printf(" Type: %s %s certificate\n", key_ssh_name(key),
1872: key_cert_type(key));
1873: printf(" Public key: %s %s\n", key_type(key), key_fp);
1874: printf(" Signing CA: %s %s\n",
1.182 djm 1875: key_type(key->cert->signature_key), ca_fp);
1.186 djm 1876: printf(" Key ID: \"%s\"\n", key->cert->key_id);
1.205 djm 1877: if (!v00) {
1878: printf(" Serial: %llu\n",
1879: (unsigned long long)key->cert->serial);
1880: }
1.182 djm 1881: printf(" Valid: %s\n",
1882: fmt_validity(key->cert->valid_after, key->cert->valid_before));
1883: printf(" Principals: ");
1884: if (key->cert->nprincipals == 0)
1885: printf("(none)\n");
1886: else {
1887: for (i = 0; i < key->cert->nprincipals; i++)
1888: printf("\n %s",
1889: key->cert->principals[i]);
1890: printf("\n");
1891: }
1.186 djm 1892: printf(" Critical Options: ");
1893: if (buffer_len(&key->cert->critical) == 0)
1.182 djm 1894: printf("(none)\n");
1895: else {
1896: printf("\n");
1.192 djm 1897: show_options(&key->cert->critical, v00, 1);
1.186 djm 1898: }
1899: if (!v00) {
1900: printf(" Extensions: ");
1901: if (buffer_len(&key->cert->extensions) == 0)
1902: printf("(none)\n");
1903: else {
1904: printf("\n");
1.192 djm 1905: show_options(&key->cert->extensions, v00, 0);
1.182 djm 1906: }
1907: }
1908: exit(0);
1909: }
1910:
1911: static void
1.223 djm 1912: load_krl(const char *path, struct ssh_krl **krlp)
1913: {
1914: Buffer krlbuf;
1915: int fd;
1916:
1917: buffer_init(&krlbuf);
1918: if ((fd = open(path, O_RDONLY)) == -1)
1919: fatal("open %s: %s", path, strerror(errno));
1920: if (!key_load_file(fd, path, &krlbuf))
1921: fatal("Unable to load KRL");
1922: close(fd);
1923: /* XXX check sigs */
1924: if (ssh_krl_from_blob(&krlbuf, krlp, NULL, 0) != 0 ||
1925: *krlp == NULL)
1926: fatal("Invalid KRL file");
1927: buffer_free(&krlbuf);
1928: }
1929:
1930: static void
1931: update_krl_from_file(struct passwd *pw, const char *file, const Key *ca,
1932: struct ssh_krl *krl)
1933: {
1934: Key *key = NULL;
1935: u_long lnum = 0;
1936: char *path, *cp, *ep, line[SSH_MAX_PUBKEY_BYTES];
1937: unsigned long long serial, serial2;
1938: int i, was_explicit_key, was_sha1, r;
1939: FILE *krl_spec;
1940:
1941: path = tilde_expand_filename(file, pw->pw_uid);
1942: if (strcmp(path, "-") == 0) {
1943: krl_spec = stdin;
1944: free(path);
1945: path = xstrdup("(standard input)");
1946: } else if ((krl_spec = fopen(path, "r")) == NULL)
1947: fatal("fopen %s: %s", path, strerror(errno));
1948:
1949: if (!quiet)
1950: printf("Revoking from %s\n", path);
1951: while (read_keyfile_line(krl_spec, path, line, sizeof(line),
1952: &lnum) == 0) {
1953: was_explicit_key = was_sha1 = 0;
1954: cp = line + strspn(line, " \t");
1955: /* Trim trailing space, comments and strip \n */
1956: for (i = 0, r = -1; cp[i] != '\0'; i++) {
1957: if (cp[i] == '#' || cp[i] == '\n') {
1958: cp[i] = '\0';
1959: break;
1960: }
1961: if (cp[i] == ' ' || cp[i] == '\t') {
1962: /* Remember the start of a span of whitespace */
1963: if (r == -1)
1964: r = i;
1965: } else
1966: r = -1;
1967: }
1968: if (r != -1)
1969: cp[r] = '\0';
1970: if (*cp == '\0')
1971: continue;
1972: if (strncasecmp(cp, "serial:", 7) == 0) {
1973: if (ca == NULL) {
1.231 djm 1974: fatal("revoking certificates by serial number "
1.223 djm 1975: "requires specification of a CA key");
1976: }
1977: cp += 7;
1978: cp = cp + strspn(cp, " \t");
1979: errno = 0;
1980: serial = strtoull(cp, &ep, 0);
1981: if (*cp == '\0' || (*ep != '\0' && *ep != '-'))
1982: fatal("%s:%lu: invalid serial \"%s\"",
1983: path, lnum, cp);
1984: if (errno == ERANGE && serial == ULLONG_MAX)
1985: fatal("%s:%lu: serial out of range",
1986: path, lnum);
1987: serial2 = serial;
1988: if (*ep == '-') {
1989: cp = ep + 1;
1990: errno = 0;
1991: serial2 = strtoull(cp, &ep, 0);
1992: if (*cp == '\0' || *ep != '\0')
1993: fatal("%s:%lu: invalid serial \"%s\"",
1994: path, lnum, cp);
1995: if (errno == ERANGE && serial2 == ULLONG_MAX)
1996: fatal("%s:%lu: serial out of range",
1997: path, lnum);
1998: if (serial2 <= serial)
1999: fatal("%s:%lu: invalid serial range "
2000: "%llu:%llu", path, lnum,
2001: (unsigned long long)serial,
2002: (unsigned long long)serial2);
2003: }
2004: if (ssh_krl_revoke_cert_by_serial_range(krl,
2005: ca, serial, serial2) != 0) {
2006: fatal("%s: revoke serial failed",
2007: __func__);
2008: }
2009: } else if (strncasecmp(cp, "id:", 3) == 0) {
2010: if (ca == NULL) {
1.232 djm 2011: fatal("revoking certificates by key ID "
1.223 djm 2012: "requires specification of a CA key");
2013: }
2014: cp += 3;
2015: cp = cp + strspn(cp, " \t");
2016: if (ssh_krl_revoke_cert_by_key_id(krl, ca, cp) != 0)
2017: fatal("%s: revoke key ID failed", __func__);
2018: } else {
2019: if (strncasecmp(cp, "key:", 4) == 0) {
2020: cp += 4;
2021: cp = cp + strspn(cp, " \t");
2022: was_explicit_key = 1;
2023: } else if (strncasecmp(cp, "sha1:", 5) == 0) {
2024: cp += 5;
2025: cp = cp + strspn(cp, " \t");
2026: was_sha1 = 1;
2027: } else {
2028: /*
2029: * Just try to process the line as a key.
2030: * Parsing will fail if it isn't.
2031: */
2032: }
2033: if ((key = key_new(KEY_UNSPEC)) == NULL)
2034: fatal("key_new");
2035: if (key_read(key, &cp) != 1)
2036: fatal("%s:%lu: invalid key", path, lnum);
2037: if (was_explicit_key)
2038: r = ssh_krl_revoke_key_explicit(krl, key);
2039: else if (was_sha1)
2040: r = ssh_krl_revoke_key_sha1(krl, key);
2041: else
2042: r = ssh_krl_revoke_key(krl, key);
2043: if (r != 0)
2044: fatal("%s: revoke key failed", __func__);
2045: key_free(key);
2046: }
2047: }
2048: if (strcmp(path, "-") != 0)
2049: fclose(krl_spec);
1.226 djm 2050: free(path);
1.223 djm 2051: }
2052:
2053: static void
2054: do_gen_krl(struct passwd *pw, int updating, int argc, char **argv)
2055: {
2056: struct ssh_krl *krl;
2057: struct stat sb;
2058: Key *ca = NULL;
2059: int fd, i;
2060: char *tmp;
2061: Buffer kbuf;
2062:
2063: if (*identity_file == '\0')
2064: fatal("KRL generation requires an output file");
2065: if (stat(identity_file, &sb) == -1) {
2066: if (errno != ENOENT)
2067: fatal("Cannot access KRL \"%s\": %s",
2068: identity_file, strerror(errno));
2069: if (updating)
2070: fatal("KRL \"%s\" does not exist", identity_file);
2071: }
2072: if (ca_key_path != NULL) {
2073: tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
2074: if ((ca = key_load_public(tmp, NULL)) == NULL)
2075: fatal("Cannot load CA public key %s", tmp);
1.227 djm 2076: free(tmp);
1.223 djm 2077: }
2078:
2079: if (updating)
2080: load_krl(identity_file, &krl);
2081: else if ((krl = ssh_krl_init()) == NULL)
2082: fatal("couldn't create KRL");
2083:
2084: if (cert_serial != 0)
2085: ssh_krl_set_version(krl, cert_serial);
2086: if (identity_comment != NULL)
2087: ssh_krl_set_comment(krl, identity_comment);
2088:
2089: for (i = 0; i < argc; i++)
2090: update_krl_from_file(pw, argv[i], ca, krl);
2091:
2092: buffer_init(&kbuf);
2093: if (ssh_krl_to_blob(krl, &kbuf, NULL, 0) != 0)
2094: fatal("Couldn't generate KRL");
2095: if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
2096: fatal("open %s: %s", identity_file, strerror(errno));
2097: if (atomicio(vwrite, fd, buffer_ptr(&kbuf), buffer_len(&kbuf)) !=
2098: buffer_len(&kbuf))
2099: fatal("write %s: %s", identity_file, strerror(errno));
2100: close(fd);
2101: buffer_free(&kbuf);
2102: ssh_krl_free(krl);
1.226 djm 2103: if (ca != NULL)
2104: key_free(ca);
1.223 djm 2105: }
2106:
2107: static void
2108: do_check_krl(struct passwd *pw, int argc, char **argv)
2109: {
2110: int i, r, ret = 0;
2111: char *comment;
2112: struct ssh_krl *krl;
2113: Key *k;
2114:
2115: if (*identity_file == '\0')
2116: fatal("KRL checking requires an input file");
2117: load_krl(identity_file, &krl);
2118: for (i = 0; i < argc; i++) {
2119: if ((k = key_load_public(argv[i], &comment)) == NULL)
2120: fatal("Cannot load public key %s", argv[i]);
2121: r = ssh_krl_check_key(krl, k);
2122: printf("%s%s%s%s: %s\n", argv[i],
2123: *comment ? " (" : "", comment, *comment ? ")" : "",
2124: r == 0 ? "ok" : "REVOKED");
2125: if (r != 0)
2126: ret = 1;
2127: key_free(k);
2128: free(comment);
2129: }
2130: ssh_krl_free(krl);
2131: exit(ret);
2132: }
2133:
2134: static void
1.10 markus 2135: usage(void)
2136: {
1.161 sobrado 2137: fprintf(stderr, "usage: %s [options]\n", __progname);
1.77 jakob 2138: fprintf(stderr, "Options:\n");
1.206 stevesk 2139: fprintf(stderr, " -A Generate non-existent host keys for all key types.\n");
1.237 markus 2140: fprintf(stderr, " -a number Number of KDF rounds for new key format or moduli primality tests.\n");
1.123 otto 2141: fprintf(stderr, " -B Show bubblebabble digest of key file.\n");
1.77 jakob 2142: fprintf(stderr, " -b bits Number of bits in the key to create.\n");
1.123 otto 2143: fprintf(stderr, " -C comment Provide new comment.\n");
1.77 jakob 2144: fprintf(stderr, " -c Change comment in private and public key files.\n");
1.177 markus 2145: #ifdef ENABLE_PKCS11
2146: fprintf(stderr, " -D pkcs11 Download public key from pkcs11 token.\n");
2147: #endif
1.193 djm 2148: fprintf(stderr, " -e Export OpenSSH to foreign format key file.\n");
1.123 otto 2149: fprintf(stderr, " -F hostname Find hostname in known hosts file.\n");
1.77 jakob 2150: fprintf(stderr, " -f filename Filename of the key file.\n");
1.123 otto 2151: fprintf(stderr, " -G file Generate candidates for DH-GEX moduli.\n");
1.105 jakob 2152: fprintf(stderr, " -g Use generic DNS resource record format.\n");
1.123 otto 2153: fprintf(stderr, " -H Hash names in known_hosts file.\n");
1.179 djm 2154: fprintf(stderr, " -h Generate host certificate instead of a user certificate.\n");
2155: fprintf(stderr, " -I key_id Key identifier to include in certificate.\n");
1.193 djm 2156: fprintf(stderr, " -i Import foreign format to OpenSSH key file.\n");
1.216 jmc 2157: fprintf(stderr, " -J number Screen this number of moduli lines.\n");
1.215 dtucker 2158: fprintf(stderr, " -j number Start screening moduli at specified line.\n");
1.212 jmc 2159: fprintf(stderr, " -K checkpt Write checkpoints to this file.\n");
1.223 djm 2160: fprintf(stderr, " -k Generate a KRL file.\n");
1.182 djm 2161: fprintf(stderr, " -L Print the contents of a certificate.\n");
1.77 jakob 2162: fprintf(stderr, " -l Show fingerprint of key file.\n");
1.194 jmc 2163: fprintf(stderr, " -M memory Amount of memory (MB) to use for generating DH-GEX moduli.\n");
1.193 djm 2164: fprintf(stderr, " -m key_fmt Conversion format for -e/-i (PEM|PKCS8|RFC4716).\n");
1.194 jmc 2165: fprintf(stderr, " -N phrase Provide new passphrase.\n");
1.179 djm 2166: fprintf(stderr, " -n name,... User/host principal names to include in certificate\n");
1.187 jmc 2167: fprintf(stderr, " -O option Specify a certificate option.\n");
1.237 markus 2168: fprintf(stderr, " -o Enforce new private key format.\n");
1.123 otto 2169: fprintf(stderr, " -P phrase Provide old passphrase.\n");
1.77 jakob 2170: fprintf(stderr, " -p Change passphrase of private key file.\n");
1.223 djm 2171: fprintf(stderr, " -Q Test whether key(s) are revoked in KRL.\n");
1.77 jakob 2172: fprintf(stderr, " -q Quiet.\n");
1.123 otto 2173: fprintf(stderr, " -R hostname Remove host from known_hosts file.\n");
2174: fprintf(stderr, " -r hostname Print DNS resource record.\n");
1.194 jmc 2175: fprintf(stderr, " -S start Start point (hex) for generating DH-GEX moduli.\n");
1.179 djm 2176: fprintf(stderr, " -s ca_key Certify keys with CA key.\n");
1.123 otto 2177: fprintf(stderr, " -T file Screen candidates for DH-GEX moduli.\n");
1.77 jakob 2178: fprintf(stderr, " -t type Specify type of key to create.\n");
1.224 jmc 2179: fprintf(stderr, " -u Update KRL rather than creating a new one.\n");
1.179 djm 2180: fprintf(stderr, " -V from:to Specify certificate validity interval.\n");
1.123 otto 2181: fprintf(stderr, " -v Verbose.\n");
2182: fprintf(stderr, " -W gen Generator to use for generating DH-GEX moduli.\n");
2183: fprintf(stderr, " -y Read private key file and print public key.\n");
1.187 jmc 2184: fprintf(stderr, " -z serial Specify a serial number.\n");
1.237 markus 2185: fprintf(stderr, " -Z cipher Specify a cipher for new private key format.\n");
1.107 djm 2186:
1.12 markus 2187: exit(1);
1.10 markus 2188: }
2189:
1.13 deraadt 2190: /*
2191: * Main program for key management.
2192: */
1.2 provos 2193: int
1.156 deraadt 2194: main(int argc, char **argv)
1.1 deraadt 2195: {
1.87 djm 2196: char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
1.211 dtucker 2197: char *checkpoint = NULL;
1.223 djm 2198: char out_file[MAXPATHLEN], *ep, *rr_hostname = NULL;
1.46 deraadt 2199: Key *private, *public;
1.12 markus 2200: struct passwd *pw;
2201: struct stat st;
1.177 markus 2202: int opt, type, fd;
1.237 markus 2203: u_int32_t memory = 0, generator_wanted = 0;
1.107 djm 2204: int do_gen_candidates = 0, do_screen_candidates = 0;
1.223 djm 2205: int gen_all_hostkeys = 0, gen_krl = 0, update_krl = 0, check_krl = 0;
1.215 dtucker 2206: unsigned long start_lineno = 0, lines_to_process = 0;
1.107 djm 2207: BIGNUM *start = NULL;
1.12 markus 2208: FILE *f;
1.125 avsm 2209: const char *errstr;
1.33 markus 2210:
1.12 markus 2211: extern int optind;
2212: extern char *optarg;
1.129 djm 2213:
2214: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
2215: sanitise_stdfd();
1.12 markus 2216:
1.201 djm 2217: OpenSSL_add_all_algorithms();
1.156 deraadt 2218: log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
1.19 markus 2219:
1.14 markus 2220: /* we need this for the home * directory. */
1.12 markus 2221: pw = getpwuid(getuid());
2222: if (!pw) {
1.230 djm 2223: printf("No user exists for uid %lu\n", (u_long)getuid());
1.12 markus 2224: exit(1);
2225: }
1.19 markus 2226: if (gethostname(hostname, sizeof(hostname)) < 0) {
2227: perror("gethostname");
2228: exit(1);
2229: }
1.14 markus 2230:
1.237 markus 2231: /* Remaining characters: EUYdw */
2232: while ((opt = getopt(argc, argv, "ABHLQXceghiklopquvxy"
2233: "C:D:F:G:I:J:K:M:N:O:P:R:S:T:V:W:Z:a:b:f:g:j:m:n:r:s:t:z:")) != -1) {
1.12 markus 2234: switch (opt) {
1.206 stevesk 2235: case 'A':
2236: gen_all_hostkeys = 1;
2237: break;
1.12 markus 2238: case 'b':
1.202 markus 2239: bits = (u_int32_t)strtonum(optarg, 256, 32768, &errstr);
1.125 avsm 2240: if (errstr)
2241: fatal("Bits has bad value %s (%s)",
2242: optarg, errstr);
1.12 markus 2243: break;
1.119 djm 2244: case 'F':
2245: find_host = 1;
2246: rr_hostname = optarg;
2247: break;
2248: case 'H':
2249: hash_hosts = 1;
2250: break;
1.179 djm 2251: case 'I':
2252: cert_key_id = optarg;
2253: break;
1.215 dtucker 2254: case 'J':
2255: lines_to_process = strtoul(optarg, NULL, 10);
2256: break;
2257: case 'j':
2258: start_lineno = strtoul(optarg, NULL, 10);
2259: break;
1.119 djm 2260: case 'R':
2261: delete_host = 1;
2262: rr_hostname = optarg;
2263: break;
1.182 djm 2264: case 'L':
2265: show_cert = 1;
2266: break;
1.12 markus 2267: case 'l':
2268: print_fingerprint = 1;
2269: break;
1.49 markus 2270: case 'B':
2271: print_bubblebabble = 1;
2272: break;
1.193 djm 2273: case 'm':
2274: if (strcasecmp(optarg, "RFC4716") == 0 ||
2275: strcasecmp(optarg, "ssh2") == 0) {
2276: convert_format = FMT_RFC4716;
2277: break;
2278: }
2279: if (strcasecmp(optarg, "PKCS8") == 0) {
2280: convert_format = FMT_PKCS8;
2281: break;
2282: }
2283: if (strcasecmp(optarg, "PEM") == 0) {
2284: convert_format = FMT_PEM;
2285: break;
2286: }
2287: fatal("Unsupported conversion format \"%s\"", optarg);
1.179 djm 2288: case 'n':
2289: cert_principals = optarg;
2290: break;
1.237 markus 2291: case 'o':
2292: use_new_format = 1;
2293: break;
1.12 markus 2294: case 'p':
2295: change_passphrase = 1;
2296: break;
2297: case 'c':
2298: change_comment = 1;
2299: break;
2300: case 'f':
1.124 avsm 2301: if (strlcpy(identity_file, optarg, sizeof(identity_file)) >=
2302: sizeof(identity_file))
2303: fatal("Identity filename too long");
1.12 markus 2304: have_identity = 1;
2305: break;
1.105 jakob 2306: case 'g':
2307: print_generic = 1;
2308: break;
1.12 markus 2309: case 'P':
2310: identity_passphrase = optarg;
2311: break;
2312: case 'N':
2313: identity_new_passphrase = optarg;
2314: break;
1.223 djm 2315: case 'Q':
2316: check_krl = 1;
2317: break;
1.179 djm 2318: case 'O':
1.186 djm 2319: add_cert_option(optarg);
1.179 djm 2320: break;
1.237 markus 2321: case 'Z':
2322: new_format_cipher = optarg;
2323: break;
1.12 markus 2324: case 'C':
2325: identity_comment = optarg;
2326: break;
2327: case 'q':
2328: quiet = 1;
1.20 deraadt 2329: break;
1.57 markus 2330: case 'e':
1.19 markus 2331: case 'x':
1.57 markus 2332: /* export key */
1.193 djm 2333: convert_to = 1;
1.19 markus 2334: break;
1.179 djm 2335: case 'h':
2336: cert_key_type = SSH2_CERT_TYPE_HOST;
1.190 djm 2337: certflags_flags = 0;
1.179 djm 2338: break;
1.223 djm 2339: case 'k':
2340: gen_krl = 1;
2341: break;
1.57 markus 2342: case 'i':
1.19 markus 2343: case 'X':
1.57 markus 2344: /* import key */
1.193 djm 2345: convert_from = 1;
1.19 markus 2346: break;
2347: case 'y':
2348: print_public = 1;
2349: break;
1.179 djm 2350: case 's':
2351: ca_key_path = optarg;
2352: break;
1.33 markus 2353: case 't':
2354: key_type_name = optarg;
2355: break;
1.75 markus 2356: case 'D':
1.177 markus 2357: pkcs11provider = optarg;
1.66 markus 2358: break;
1.223 djm 2359: case 'u':
2360: update_krl = 1;
2361: break;
1.113 djm 2362: case 'v':
2363: if (log_level == SYSLOG_LEVEL_INFO)
2364: log_level = SYSLOG_LEVEL_DEBUG1;
2365: else {
1.117 deraadt 2366: if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
1.113 djm 2367: log_level < SYSLOG_LEVEL_DEBUG3)
2368: log_level++;
2369: }
2370: break;
1.105 jakob 2371: case 'r':
1.119 djm 2372: rr_hostname = optarg;
1.105 jakob 2373: break;
1.107 djm 2374: case 'W':
1.142 deraadt 2375: generator_wanted = (u_int32_t)strtonum(optarg, 1,
2376: UINT_MAX, &errstr);
1.124 avsm 2377: if (errstr)
2378: fatal("Desired generator has bad value: %s (%s)",
2379: optarg, errstr);
1.107 djm 2380: break;
2381: case 'a':
1.237 markus 2382: rounds = (int)strtonum(optarg, 1, INT_MAX, &errstr);
1.124 avsm 2383: if (errstr)
1.237 markus 2384: fatal("Invalid number: %s (%s)",
1.124 avsm 2385: optarg, errstr);
1.107 djm 2386: break;
2387: case 'M':
1.142 deraadt 2388: memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr);
1.186 djm 2389: if (errstr)
1.124 avsm 2390: fatal("Memory limit is %s: %s", errstr, optarg);
1.107 djm 2391: break;
2392: case 'G':
2393: do_gen_candidates = 1;
1.124 avsm 2394: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2395: sizeof(out_file))
2396: fatal("Output filename too long");
1.107 djm 2397: break;
2398: case 'T':
2399: do_screen_candidates = 1;
1.124 avsm 2400: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2401: sizeof(out_file))
2402: fatal("Output filename too long");
1.107 djm 2403: break;
1.211 dtucker 2404: case 'K':
2405: if (strlen(optarg) >= MAXPATHLEN)
2406: fatal("Checkpoint filename too long");
2407: checkpoint = xstrdup(optarg);
2408: break;
1.107 djm 2409: case 'S':
2410: /* XXX - also compare length against bits */
2411: if (BN_hex2bn(&start, optarg) == 0)
2412: fatal("Invalid start point.");
2413: break;
1.179 djm 2414: case 'V':
2415: parse_cert_times(optarg);
1.186 djm 2416: break;
2417: case 'z':
1.219 djm 2418: errno = 0;
2419: cert_serial = strtoull(optarg, &ep, 10);
2420: if (*optarg < '0' || *optarg > '9' || *ep != '\0' ||
2421: (errno == ERANGE && cert_serial == ULLONG_MAX))
2422: fatal("Invalid serial number \"%s\"", optarg);
1.179 djm 2423: break;
1.12 markus 2424: case '?':
2425: default:
2426: usage();
2427: }
2428: }
1.113 djm 2429:
2430: /* reinit */
1.156 deraadt 2431: log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
1.113 djm 2432:
1.179 djm 2433: argv += optind;
2434: argc -= optind;
2435:
2436: if (ca_key_path != NULL) {
1.223 djm 2437: if (argc < 1 && !gen_krl) {
1.179 djm 2438: printf("Too few arguments.\n");
2439: usage();
2440: }
1.223 djm 2441: } else if (argc > 0 && !gen_krl && !check_krl) {
1.12 markus 2442: printf("Too many arguments.\n");
1.87 djm 2443: usage();
2444: }
1.12 markus 2445: if (change_passphrase && change_comment) {
2446: printf("Can only have one of -p and -c.\n");
1.166 djm 2447: usage();
2448: }
2449: if (print_fingerprint && (delete_host || hash_hosts)) {
1.221 djm 2450: printf("Cannot use -l with -H or -R.\n");
1.12 markus 2451: usage();
1.223 djm 2452: }
2453: if (gen_krl) {
2454: do_gen_krl(pw, update_krl, argc, argv);
2455: return (0);
2456: }
2457: if (check_krl) {
2458: do_check_krl(pw, argc, argv);
2459: return (0);
1.179 djm 2460: }
2461: if (ca_key_path != NULL) {
2462: if (cert_key_id == NULL)
2463: fatal("Must specify key id (-I) when certifying");
2464: do_ca_sign(pw, argc, argv);
1.12 markus 2465: }
1.182 djm 2466: if (show_cert)
2467: do_show_cert(pw);
1.119 djm 2468: if (delete_host || hash_hosts || find_host)
2469: do_known_hosts(pw, rr_hostname);
1.221 djm 2470: if (pkcs11provider != NULL)
2471: do_download(pw);
1.49 markus 2472: if (print_fingerprint || print_bubblebabble)
1.12 markus 2473: do_fingerprint(pw);
2474: if (change_passphrase)
2475: do_change_passphrase(pw);
2476: if (change_comment)
2477: do_change_comment(pw);
1.193 djm 2478: if (convert_to)
2479: do_convert_to(pw);
2480: if (convert_from)
2481: do_convert_from(pw);
1.19 markus 2482: if (print_public)
2483: do_print_public(pw);
1.119 djm 2484: if (rr_hostname != NULL) {
1.138 jakob 2485: unsigned int n = 0;
2486:
2487: if (have_identity) {
2488: n = do_print_resource_record(pw,
2489: identity_file, rr_hostname);
2490: if (n == 0) {
2491: perror(identity_file);
2492: exit(1);
2493: }
2494: exit(0);
2495: } else {
2496:
2497: n += do_print_resource_record(pw,
2498: _PATH_HOST_RSA_KEY_FILE, rr_hostname);
2499: n += do_print_resource_record(pw,
2500: _PATH_HOST_DSA_KEY_FILE, rr_hostname);
1.214 djm 2501: n += do_print_resource_record(pw,
2502: _PATH_HOST_ECDSA_KEY_FILE, rr_hostname);
1.138 jakob 2503:
2504: if (n == 0)
2505: fatal("no keys found.");
2506: exit(0);
2507: }
1.105 jakob 2508: }
1.107 djm 2509:
2510: if (do_gen_candidates) {
2511: FILE *out = fopen(out_file, "w");
1.111 djm 2512:
1.107 djm 2513: if (out == NULL) {
2514: error("Couldn't open modulus candidate file \"%s\": %s",
2515: out_file, strerror(errno));
2516: return (1);
2517: }
1.130 markus 2518: if (bits == 0)
2519: bits = DEFAULT_BITS;
1.107 djm 2520: if (gen_candidates(out, memory, bits, start) != 0)
1.131 stevesk 2521: fatal("modulus candidate generation failed");
1.107 djm 2522:
2523: return (0);
2524: }
2525:
2526: if (do_screen_candidates) {
2527: FILE *in;
1.225 djm 2528: FILE *out = fopen(out_file, "a");
1.107 djm 2529:
2530: if (have_identity && strcmp(identity_file, "-") != 0) {
2531: if ((in = fopen(identity_file, "r")) == NULL) {
2532: fatal("Couldn't open modulus candidate "
1.111 djm 2533: "file \"%s\": %s", identity_file,
1.107 djm 2534: strerror(errno));
2535: }
2536: } else
2537: in = stdin;
2538:
2539: if (out == NULL) {
2540: fatal("Couldn't open moduli file \"%s\": %s",
2541: out_file, strerror(errno));
2542: }
1.237 markus 2543: if (prime_test(in, out, rounds == 0 ? 100 : rounds,
2544: generator_wanted, checkpoint,
1.215 dtucker 2545: start_lineno, lines_to_process) != 0)
1.131 stevesk 2546: fatal("modulus screening failed");
1.108 markus 2547: return (0);
1.75 markus 2548: }
1.12 markus 2549:
1.206 stevesk 2550: if (gen_all_hostkeys) {
2551: do_gen_all_hostkeys(pw);
2552: return (0);
2553: }
2554:
1.133 djm 2555: if (key_type_name == NULL)
2556: key_type_name = "rsa";
2557:
1.35 markus 2558: type = key_type_from_name(key_type_name);
1.206 stevesk 2559: type_bits_valid(type, &bits);
2560:
1.33 markus 2561: if (!quiet)
1.35 markus 2562: printf("Generating public/private %s key pair.\n", key_type_name);
1.33 markus 2563: private = key_generate(type, bits);
2564: if (private == NULL) {
1.173 tobias 2565: fprintf(stderr, "key_generate failed\n");
1.33 markus 2566: exit(1);
2567: }
2568: public = key_from_private(private);
1.12 markus 2569:
2570: if (!have_identity)
2571: ask_filename(pw, "Enter file in which to save the key");
2572:
1.132 djm 2573: /* Create ~/.ssh directory if it doesn't already exist. */
1.188 djm 2574: snprintf(dotsshdir, sizeof dotsshdir, "%s/%s",
2575: pw->pw_dir, _PATH_SSH_USER_DIR);
2576: if (strstr(identity_file, dotsshdir) != NULL) {
2577: if (stat(dotsshdir, &st) < 0) {
2578: if (errno != ENOENT) {
2579: error("Could not stat %s: %s", dotsshdir,
2580: strerror(errno));
2581: } else if (mkdir(dotsshdir, 0700) < 0) {
2582: error("Could not create directory '%s': %s",
2583: dotsshdir, strerror(errno));
2584: } else if (!quiet)
2585: printf("Created directory '%s'.\n", dotsshdir);
2586: }
1.12 markus 2587: }
2588: /* If the file already exists, ask the user to confirm. */
2589: if (stat(identity_file, &st) >= 0) {
2590: char yesno[3];
2591: printf("%s already exists.\n", identity_file);
2592: printf("Overwrite (y/n)? ");
2593: fflush(stdout);
2594: if (fgets(yesno, sizeof(yesno), stdin) == NULL)
2595: exit(1);
2596: if (yesno[0] != 'y' && yesno[0] != 'Y')
2597: exit(1);
2598: }
2599: /* Ask for a passphrase (twice). */
2600: if (identity_passphrase)
2601: passphrase1 = xstrdup(identity_passphrase);
2602: else if (identity_new_passphrase)
2603: passphrase1 = xstrdup(identity_new_passphrase);
2604: else {
2605: passphrase_again:
2606: passphrase1 =
1.65 markus 2607: read_passphrase("Enter passphrase (empty for no "
2608: "passphrase): ", RP_ALLOW_STDIN);
2609: passphrase2 = read_passphrase("Enter same passphrase again: ",
2610: RP_ALLOW_STDIN);
1.12 markus 2611: if (strcmp(passphrase1, passphrase2) != 0) {
1.65 markus 2612: /*
2613: * The passphrases do not match. Clear them and
2614: * retry.
2615: */
1.12 markus 2616: memset(passphrase1, 0, strlen(passphrase1));
2617: memset(passphrase2, 0, strlen(passphrase2));
1.227 djm 2618: free(passphrase1);
2619: free(passphrase2);
1.12 markus 2620: printf("Passphrases do not match. Try again.\n");
2621: goto passphrase_again;
2622: }
2623: /* Clear the other copy of the passphrase. */
2624: memset(passphrase2, 0, strlen(passphrase2));
1.227 djm 2625: free(passphrase2);
1.12 markus 2626: }
2627:
2628: if (identity_comment) {
2629: strlcpy(comment, identity_comment, sizeof(comment));
2630: } else {
1.172 stevesk 2631: /* Create default comment field for the passphrase. */
1.12 markus 2632: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
2633: }
2634:
2635: /* Save the key with the given passphrase and comment. */
1.237 markus 2636: if (!key_save_private(private, identity_file, passphrase1, comment,
2637: use_new_format, new_format_cipher, rounds)) {
1.56 markus 2638: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 2639: memset(passphrase1, 0, strlen(passphrase1));
1.227 djm 2640: free(passphrase1);
1.12 markus 2641: exit(1);
2642: }
2643: /* Clear the passphrase. */
2644: memset(passphrase1, 0, strlen(passphrase1));
1.227 djm 2645: free(passphrase1);
1.12 markus 2646:
2647: /* Clear the private key and the random number generator. */
1.33 markus 2648: key_free(private);
1.12 markus 2649:
2650: if (!quiet)
2651: printf("Your identification has been saved in %s.\n", identity_file);
2652:
2653: strlcat(identity_file, ".pub", sizeof(identity_file));
1.46 deraadt 2654: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
2655: if (fd == -1) {
1.12 markus 2656: printf("Could not save your public key in %s\n", identity_file);
1.46 deraadt 2657: exit(1);
2658: }
2659: f = fdopen(fd, "w");
2660: if (f == NULL) {
1.173 tobias 2661: printf("fdopen %s failed\n", identity_file);
1.12 markus 2662: exit(1);
2663: }
1.19 markus 2664: if (!key_write(public, f))
1.173 tobias 2665: fprintf(stderr, "write key failed\n");
1.19 markus 2666: fprintf(f, " %s\n", comment);
1.12 markus 2667: fclose(f);
2668:
2669: if (!quiet) {
1.50 markus 2670: char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX);
1.167 grunk 2671: char *ra = key_fingerprint(public, SSH_FP_MD5,
2672: SSH_FP_RANDOMART);
1.19 markus 2673: printf("Your public key has been saved in %s.\n",
2674: identity_file);
1.12 markus 2675: printf("The key fingerprint is:\n");
1.50 markus 2676: printf("%s %s\n", fp, comment);
1.167 grunk 2677: printf("The key's randomart image is:\n");
2678: printf("%s\n", ra);
1.227 djm 2679: free(ra);
2680: free(fp);
1.12 markus 2681: }
1.19 markus 2682:
2683: key_free(public);
1.12 markus 2684: exit(0);
1.1 deraadt 2685: }
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