Annotation of src/usr.bin/ssh/ssh-keygen.c, Revision 1.187
1.187 ! jmc 1: /* $OpenBSD: ssh-keygen.c,v 1.186 2010/04/16 01:47:26 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>
1.151 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"
1.179 djm 43: #include "ssh2.h"
1.32 markus 44:
1.177 markus 45: #ifdef ENABLE_PKCS11
46: #include "ssh-pkcs11.h"
1.106 djm 47: #endif
1.66 markus 48:
1.130 markus 49: /* Number of bits in the RSA/DSA key. This value can be set on the command line. */
50: #define DEFAULT_BITS 2048
51: #define DEFAULT_BITS_DSA 1024
52: u_int32_t bits = 0;
1.1 deraadt 53:
1.14 markus 54: /*
55: * Flag indicating that we just want to change the passphrase. This can be
56: * set on the command line.
57: */
1.1 deraadt 58: int change_passphrase = 0;
59:
1.14 markus 60: /*
61: * Flag indicating that we just want to change the comment. This can be set
62: * on the command line.
63: */
1.1 deraadt 64: int change_comment = 0;
65:
1.2 provos 66: int quiet = 0;
67:
1.169 grunk 68: int log_level = SYSLOG_LEVEL_INFO;
69:
1.119 djm 70: /* Flag indicating that we want to hash a known_hosts file */
71: int hash_hosts = 0;
72: /* Flag indicating that we want lookup a host in known_hosts file */
73: int find_host = 0;
74: /* Flag indicating that we want to delete a host from a known_hosts file */
75: int delete_host = 0;
76:
1.182 djm 77: /* Flag indicating that we want to show the contents of a certificate */
78: int show_cert = 0;
79:
1.8 markus 80: /* Flag indicating that we just want to see the key fingerprint */
81: int print_fingerprint = 0;
1.49 markus 82: int print_bubblebabble = 0;
1.8 markus 83:
1.10 markus 84: /* The identity file name, given on the command line or entered by the user. */
85: char identity_file[1024];
86: int have_identity = 0;
1.1 deraadt 87:
88: /* This is set to the passphrase if given on the command line. */
89: char *identity_passphrase = NULL;
90:
91: /* This is set to the new passphrase if given on the command line. */
92: char *identity_new_passphrase = NULL;
93:
94: /* This is set to the new comment if given on the command line. */
95: char *identity_comment = NULL;
96:
1.179 djm 97: /* Path to CA key when certifying keys. */
98: char *ca_key_path = NULL;
99:
1.186 djm 100: /* Certificate serial number */
101: long long cert_serial = 0;
102:
1.179 djm 103: /* Key type when certifying */
104: u_int cert_key_type = SSH2_CERT_TYPE_USER;
105:
106: /* "key ID" of signed key */
107: char *cert_key_id = NULL;
108:
109: /* Comma-separated list of principal names for certifying keys */
110: char *cert_principals = NULL;
111:
112: /* Validity period for certificates */
113: u_int64_t cert_valid_from = 0;
114: u_int64_t cert_valid_to = ~0ULL;
115:
1.186 djm 116: /* Certificate options */
117: #define CRITOPT_X_FWD (1)
118: #define CRITOPT_AGENT_FWD (1<<1)
119: #define CRITOPT_PORT_FWD (1<<2)
120: #define CRITOPT_PTY (1<<3)
121: #define CRITOPT_USER_RC (1<<4)
122: #define CRITOPT_DEFAULT (CRITOPT_X_FWD|CRITOPT_AGENT_FWD| \
123: CRITOPT_PORT_FWD|CRITOPT_PTY| \
124: CRITOPT_USER_RC)
125: u_int32_t critical_flags = CRITOPT_DEFAULT;
126: char *critical_command = NULL;
127: char *critical_src_addr = NULL;
1.179 djm 128:
1.19 markus 129: /* Dump public key file in format used by real and the original SSH 2 */
130: int convert_to_ssh2 = 0;
131: int convert_from_ssh2 = 0;
132: int print_public = 0;
1.105 jakob 133: int print_generic = 0;
1.33 markus 134:
1.87 djm 135: char *key_type_name = NULL;
1.19 markus 136:
1.10 markus 137: /* argv0 */
138: extern char *__progname;
1.1 deraadt 139:
1.19 markus 140: char hostname[MAXHOSTNAMELEN];
141:
1.115 djm 142: /* moduli.c */
1.124 avsm 143: int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *);
1.115 djm 144: int prime_test(FILE *, FILE *, u_int32_t, u_int32_t);
145:
1.63 itojun 146: static void
1.10 markus 147: ask_filename(struct passwd *pw, const char *prompt)
1.1 deraadt 148: {
1.12 markus 149: char buf[1024];
1.35 markus 150: char *name = NULL;
151:
1.92 stevesk 152: if (key_type_name == NULL)
1.40 markus 153: name = _PATH_SSH_CLIENT_ID_RSA;
1.140 deraadt 154: else {
1.92 stevesk 155: switch (key_type_from_name(key_type_name)) {
156: case KEY_RSA1:
157: name = _PATH_SSH_CLIENT_IDENTITY;
158: break;
1.186 djm 159: case KEY_DSA_CERT:
160: case KEY_DSA_CERT_V00:
1.92 stevesk 161: case KEY_DSA:
162: name = _PATH_SSH_CLIENT_ID_DSA;
163: break;
1.186 djm 164: case KEY_RSA_CERT:
165: case KEY_RSA_CERT_V00:
1.92 stevesk 166: case KEY_RSA:
167: name = _PATH_SSH_CLIENT_ID_RSA;
168: break;
169: default:
1.173 tobias 170: fprintf(stderr, "bad key type\n");
1.92 stevesk 171: exit(1);
172: break;
173: }
1.140 deraadt 174: }
1.35 markus 175: snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name);
1.37 markus 176: fprintf(stderr, "%s (%s): ", prompt, identity_file);
1.12 markus 177: if (fgets(buf, sizeof(buf), stdin) == NULL)
178: exit(1);
1.162 gilles 179: buf[strcspn(buf, "\n")] = '\0';
1.12 markus 180: if (strcmp(buf, "") != 0)
181: strlcpy(identity_file, buf, sizeof(identity_file));
182: have_identity = 1;
1.7 markus 183: }
184:
1.63 itojun 185: static Key *
1.61 markus 186: load_identity(char *filename)
1.19 markus 187: {
1.52 markus 188: char *pass;
189: Key *prv;
190:
1.55 markus 191: prv = key_load_private(filename, "", NULL);
1.52 markus 192: if (prv == NULL) {
1.61 markus 193: if (identity_passphrase)
194: pass = xstrdup(identity_passphrase);
195: else
1.65 markus 196: pass = read_passphrase("Enter passphrase: ",
197: RP_ALLOW_STDIN);
1.52 markus 198: prv = key_load_private(filename, pass, NULL);
1.19 markus 199: memset(pass, 0, strlen(pass));
200: xfree(pass);
201: }
1.52 markus 202: return prv;
1.19 markus 203: }
204:
1.32 markus 205: #define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
1.100 deraadt 206: #define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
1.32 markus 207: #define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
1.42 stevesk 208: #define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
1.19 markus 209:
1.63 itojun 210: static void
1.19 markus 211: do_convert_to_ssh2(struct passwd *pw)
212: {
1.59 markus 213: Key *k;
1.94 markus 214: u_int len;
1.36 markus 215: u_char *blob;
1.176 djm 216: char comment[61];
1.19 markus 217: struct stat st;
218:
219: if (!have_identity)
220: ask_filename(pw, "Enter file in which the key is");
221: if (stat(identity_file, &st) < 0) {
222: perror(identity_file);
223: exit(1);
224: }
1.59 markus 225: if ((k = key_load_public(identity_file, NULL)) == NULL) {
1.61 markus 226: if ((k = load_identity(identity_file)) == NULL) {
1.59 markus 227: fprintf(stderr, "load failed\n");
228: exit(1);
229: }
1.104 markus 230: }
231: if (k->type == KEY_RSA1) {
232: fprintf(stderr, "version 1 keys are not supported\n");
233: exit(1);
1.19 markus 234: }
1.81 markus 235: if (key_to_blob(k, &blob, &len) <= 0) {
236: fprintf(stderr, "key_to_blob failed\n");
237: exit(1);
238: }
1.176 djm 239: /* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
240: snprintf(comment, sizeof(comment),
241: "%u-bit %s, converted by %s@%s from OpenSSH",
1.59 markus 242: key_size(k), key_type(k),
1.19 markus 243: pw->pw_name, hostname);
1.176 djm 244:
245: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
246: fprintf(stdout, "Comment: \"%s\"\n", comment);
1.19 markus 247: dump_base64(stdout, blob, len);
1.32 markus 248: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
1.59 markus 249: key_free(k);
1.21 markus 250: xfree(blob);
1.19 markus 251: exit(0);
252: }
253:
1.63 itojun 254: static void
1.32 markus 255: buffer_get_bignum_bits(Buffer *b, BIGNUM *value)
256: {
1.116 avsm 257: u_int bignum_bits = buffer_get_int(b);
258: u_int bytes = (bignum_bits + 7) / 8;
1.53 markus 259:
1.32 markus 260: if (buffer_len(b) < bytes)
1.53 markus 261: fatal("buffer_get_bignum_bits: input buffer too small: "
262: "need %d have %d", bytes, buffer_len(b));
1.155 markus 263: if (BN_bin2bn(buffer_ptr(b), bytes, value) == NULL)
264: fatal("buffer_get_bignum_bits: BN_bin2bn failed");
1.32 markus 265: buffer_consume(b, bytes);
266: }
267:
1.63 itojun 268: static Key *
1.93 markus 269: do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
1.32 markus 270: {
271: Buffer b;
272: Key *key = NULL;
1.64 markus 273: char *type, *cipher;
1.69 stevesk 274: u_char *sig, data[] = "abcde12345";
1.62 markus 275: int magic, rlen, ktype, i1, i2, i3, i4;
1.64 markus 276: u_int slen;
1.62 markus 277: u_long e;
1.32 markus 278:
279: buffer_init(&b);
280: buffer_append(&b, blob, blen);
281:
1.160 stevesk 282: magic = buffer_get_int(&b);
1.32 markus 283: if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
284: error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC);
285: buffer_free(&b);
286: return NULL;
287: }
1.62 markus 288: i1 = buffer_get_int(&b);
1.32 markus 289: type = buffer_get_string(&b, NULL);
290: cipher = buffer_get_string(&b, NULL);
1.62 markus 291: i2 = buffer_get_int(&b);
292: i3 = buffer_get_int(&b);
293: i4 = buffer_get_int(&b);
1.158 stevesk 294: debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
1.32 markus 295: if (strcmp(cipher, "none") != 0) {
296: error("unsupported cipher %s", cipher);
297: xfree(cipher);
298: buffer_free(&b);
1.53 markus 299: xfree(type);
1.32 markus 300: return NULL;
301: }
302: xfree(cipher);
303:
1.53 markus 304: if (strstr(type, "dsa")) {
305: ktype = KEY_DSA;
306: } else if (strstr(type, "rsa")) {
307: ktype = KEY_RSA;
308: } else {
1.118 markus 309: buffer_free(&b);
1.53 markus 310: xfree(type);
1.32 markus 311: return NULL;
312: }
1.53 markus 313: key = key_new_private(ktype);
314: xfree(type);
315:
316: switch (key->type) {
317: case KEY_DSA:
318: buffer_get_bignum_bits(&b, key->dsa->p);
319: buffer_get_bignum_bits(&b, key->dsa->g);
320: buffer_get_bignum_bits(&b, key->dsa->q);
321: buffer_get_bignum_bits(&b, key->dsa->pub_key);
322: buffer_get_bignum_bits(&b, key->dsa->priv_key);
323: break;
324: case KEY_RSA:
1.160 stevesk 325: e = buffer_get_char(&b);
1.62 markus 326: debug("e %lx", e);
327: if (e < 30) {
328: e <<= 8;
329: e += buffer_get_char(&b);
330: debug("e %lx", e);
331: e <<= 8;
332: e += buffer_get_char(&b);
333: debug("e %lx", e);
334: }
335: if (!BN_set_word(key->rsa->e, e)) {
1.53 markus 336: buffer_free(&b);
337: key_free(key);
338: return NULL;
339: }
340: buffer_get_bignum_bits(&b, key->rsa->d);
341: buffer_get_bignum_bits(&b, key->rsa->n);
342: buffer_get_bignum_bits(&b, key->rsa->iqmp);
343: buffer_get_bignum_bits(&b, key->rsa->q);
344: buffer_get_bignum_bits(&b, key->rsa->p);
1.68 markus 345: rsa_generate_additional_parameters(key->rsa);
1.53 markus 346: break;
347: }
1.32 markus 348: rlen = buffer_len(&b);
1.85 deraadt 349: if (rlen != 0)
1.53 markus 350: error("do_convert_private_ssh2_from_blob: "
351: "remaining bytes in key blob %d", rlen);
1.32 markus 352: buffer_free(&b);
1.64 markus 353:
354: /* try the key */
355: key_sign(key, &sig, &slen, data, sizeof(data));
356: key_verify(key, sig, slen, data, sizeof(data));
357: xfree(sig);
1.32 markus 358: return key;
359: }
360:
1.137 dtucker 361: static int
362: get_line(FILE *fp, char *line, size_t len)
363: {
364: int c;
365: size_t pos = 0;
366:
367: line[0] = '\0';
368: while ((c = fgetc(fp)) != EOF) {
369: if (pos >= len - 1) {
370: fprintf(stderr, "input line too long.\n");
371: exit(1);
372: }
1.140 deraadt 373: switch (c) {
1.137 dtucker 374: case '\r':
375: c = fgetc(fp);
376: if (c != EOF && c != '\n' && ungetc(c, fp) == EOF) {
377: fprintf(stderr, "unget: %s\n", strerror(errno));
378: exit(1);
379: }
380: return pos;
381: case '\n':
382: return pos;
383: }
384: line[pos++] = c;
385: line[pos] = '\0';
386: }
1.157 stevesk 387: /* We reached EOF */
388: return -1;
1.137 dtucker 389: }
390:
1.63 itojun 391: static void
1.19 markus 392: do_convert_from_ssh2(struct passwd *pw)
393: {
394: Key *k;
395: int blen;
1.98 markus 396: u_int len;
1.137 dtucker 397: char line[1024];
1.80 stevesk 398: u_char blob[8096];
1.19 markus 399: char encoded[8096];
400: struct stat st;
1.32 markus 401: int escaped = 0, private = 0, ok;
1.19 markus 402: FILE *fp;
403:
404: if (!have_identity)
405: ask_filename(pw, "Enter file in which the key is");
406: if (stat(identity_file, &st) < 0) {
407: perror(identity_file);
408: exit(1);
409: }
410: fp = fopen(identity_file, "r");
411: if (fp == NULL) {
412: perror(identity_file);
413: exit(1);
414: }
415: encoded[0] = '\0';
1.137 dtucker 416: while ((blen = get_line(fp, line, sizeof(line))) != -1) {
417: if (line[blen - 1] == '\\')
1.25 markus 418: escaped++;
1.19 markus 419: if (strncmp(line, "----", 4) == 0 ||
420: strstr(line, ": ") != NULL) {
1.32 markus 421: if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
422: private = 1;
1.64 markus 423: if (strstr(line, " END ") != NULL) {
424: break;
425: }
1.60 markus 426: /* fprintf(stderr, "ignore: %s", line); */
1.19 markus 427: continue;
428: }
1.25 markus 429: if (escaped) {
430: escaped--;
1.60 markus 431: /* fprintf(stderr, "escaped: %s", line); */
1.25 markus 432: continue;
1.19 markus 433: }
434: strlcat(encoded, line, sizeof(encoded));
435: }
1.98 markus 436: len = strlen(encoded);
437: if (((len % 4) == 3) &&
438: (encoded[len-1] == '=') &&
439: (encoded[len-2] == '=') &&
440: (encoded[len-3] == '='))
441: encoded[len-3] = '\0';
1.91 stevesk 442: blen = uudecode(encoded, blob, sizeof(blob));
1.19 markus 443: if (blen < 0) {
444: fprintf(stderr, "uudecode failed.\n");
445: exit(1);
446: }
1.32 markus 447: k = private ?
448: do_convert_private_ssh2_from_blob(blob, blen) :
1.33 markus 449: key_from_blob(blob, blen);
1.32 markus 450: if (k == NULL) {
451: fprintf(stderr, "decode blob failed.\n");
452: exit(1);
453: }
454: ok = private ?
1.53 markus 455: (k->type == KEY_DSA ?
456: PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) :
457: PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) :
1.32 markus 458: key_write(k, stdout);
459: if (!ok) {
1.173 tobias 460: fprintf(stderr, "key write failed\n");
1.32 markus 461: exit(1);
462: }
1.19 markus 463: key_free(k);
1.90 markus 464: if (!private)
465: fprintf(stdout, "\n");
1.19 markus 466: fclose(fp);
467: exit(0);
468: }
469:
1.63 itojun 470: static void
1.19 markus 471: do_print_public(struct passwd *pw)
472: {
1.52 markus 473: Key *prv;
1.19 markus 474: struct stat st;
475:
476: if (!have_identity)
477: ask_filename(pw, "Enter file in which the key is");
478: if (stat(identity_file, &st) < 0) {
479: perror(identity_file);
480: exit(1);
481: }
1.61 markus 482: prv = load_identity(identity_file);
1.52 markus 483: if (prv == NULL) {
1.19 markus 484: fprintf(stderr, "load failed\n");
485: exit(1);
486: }
1.52 markus 487: if (!key_write(prv, stdout))
1.19 markus 488: fprintf(stderr, "key_write failed");
1.52 markus 489: key_free(prv);
1.19 markus 490: fprintf(stdout, "\n");
491: exit(0);
492: }
493:
1.66 markus 494: static void
1.178 djm 495: do_download(struct passwd *pw, char *pkcs11provider)
1.75 markus 496: {
1.177 markus 497: #ifdef ENABLE_PKCS11
1.97 markus 498: Key **keys = NULL;
1.177 markus 499: int i, nkeys;
1.75 markus 500:
1.177 markus 501: pkcs11_init(0);
502: nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys);
503: if (nkeys <= 0)
504: fatal("cannot read public key from pkcs11");
505: for (i = 0; i < nkeys; i++) {
1.97 markus 506: key_write(keys[i], stdout);
507: key_free(keys[i]);
508: fprintf(stdout, "\n");
509: }
510: xfree(keys);
1.177 markus 511: pkcs11_terminate();
1.75 markus 512: exit(0);
1.177 markus 513: #else
514: fatal("no pkcs11 support");
515: #endif /* ENABLE_PKCS11 */
1.75 markus 516: }
1.66 markus 517:
1.63 itojun 518: static void
1.8 markus 519: do_fingerprint(struct passwd *pw)
520: {
1.15 markus 521: FILE *f;
1.19 markus 522: Key *public;
1.167 grunk 523: char *comment = NULL, *cp, *ep, line[16*1024], *fp, *ra;
1.165 djm 524: int i, skip = 0, num = 0, invalid = 1;
1.84 stevesk 525: enum fp_rep rep;
526: enum fp_type fptype;
1.12 markus 527: struct stat st;
528:
1.52 markus 529: fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
530: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
1.49 markus 531:
1.12 markus 532: if (!have_identity)
533: ask_filename(pw, "Enter file in which the key is");
534: if (stat(identity_file, &st) < 0) {
535: perror(identity_file);
536: exit(1);
537: }
1.52 markus 538: public = key_load_public(identity_file, &comment);
539: if (public != NULL) {
540: fp = key_fingerprint(public, fptype, rep);
1.175 djm 541: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
1.170 grunk 542: printf("%u %s %s (%s)\n", key_size(public), fp, comment,
543: key_type(public));
1.169 grunk 544: if (log_level >= SYSLOG_LEVEL_VERBOSE)
545: printf("%s\n", ra);
1.33 markus 546: key_free(public);
547: xfree(comment);
1.167 grunk 548: xfree(ra);
1.49 markus 549: xfree(fp);
1.15 markus 550: exit(0);
551: }
1.144 markus 552: if (comment) {
1.52 markus 553: xfree(comment);
1.144 markus 554: comment = NULL;
555: }
1.15 markus 556:
557: f = fopen(identity_file, "r");
558: if (f != NULL) {
559: while (fgets(line, sizeof(line), f)) {
1.163 chl 560: if ((cp = strchr(line, '\n')) == NULL) {
1.165 djm 561: error("line %d too long: %.40s...",
562: num + 1, line);
1.15 markus 563: skip = 1;
564: continue;
565: }
566: num++;
567: if (skip) {
568: skip = 0;
569: continue;
570: }
1.163 chl 571: *cp = '\0';
1.15 markus 572:
573: /* Skip leading whitespace, empty and comment lines. */
574: for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
575: ;
576: if (!*cp || *cp == '\n' || *cp == '#')
1.158 stevesk 577: continue;
1.15 markus 578: i = strtol(cp, &ep, 10);
579: if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) {
580: int quoted = 0;
581: comment = cp;
1.101 deraadt 582: for (; *cp && (quoted || (*cp != ' ' &&
583: *cp != '\t')); cp++) {
1.15 markus 584: if (*cp == '\\' && cp[1] == '"')
585: cp++; /* Skip both */
586: else if (*cp == '"')
587: quoted = !quoted;
588: }
589: if (!*cp)
590: continue;
591: *cp++ = '\0';
592: }
593: ep = cp;
1.38 markus 594: public = key_new(KEY_RSA1);
595: if (key_read(public, &cp) != 1) {
596: cp = ep;
597: key_free(public);
598: public = key_new(KEY_UNSPEC);
599: if (key_read(public, &cp) != 1) {
600: key_free(public);
601: continue;
602: }
1.12 markus 603: }
1.38 markus 604: comment = *cp ? cp : comment;
1.52 markus 605: fp = key_fingerprint(public, fptype, rep);
1.175 djm 606: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
1.170 grunk 607: printf("%u %s %s (%s)\n", key_size(public), fp,
608: comment ? comment : "no comment", key_type(public));
1.169 grunk 609: if (log_level >= SYSLOG_LEVEL_VERBOSE)
610: printf("%s\n", ra);
1.167 grunk 611: xfree(ra);
1.49 markus 612: xfree(fp);
1.52 markus 613: key_free(public);
1.38 markus 614: invalid = 0;
1.12 markus 615: }
1.15 markus 616: fclose(f);
617: }
618: if (invalid) {
1.83 markus 619: printf("%s is not a public key file.\n", identity_file);
1.15 markus 620: exit(1);
1.12 markus 621: }
622: exit(0);
1.8 markus 623: }
624:
1.119 djm 625: static void
1.179 djm 626: printhost(FILE *f, const char *name, Key *public, int ca, int hash)
1.119 djm 627: {
1.166 djm 628: if (print_fingerprint) {
629: enum fp_rep rep;
630: enum fp_type fptype;
1.167 grunk 631: char *fp, *ra;
1.166 djm 632:
633: fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
634: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
635: fp = key_fingerprint(public, fptype, rep);
1.175 djm 636: ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART);
1.171 sthen 637: printf("%u %s %s (%s)\n", key_size(public), fp, name,
638: key_type(public));
639: if (log_level >= SYSLOG_LEVEL_VERBOSE)
640: printf("%s\n", ra);
1.167 grunk 641: xfree(ra);
1.166 djm 642: xfree(fp);
643: } else {
644: if (hash && (name = host_hash(name, NULL, 0)) == NULL)
645: fatal("hash_host failed");
1.179 djm 646: fprintf(f, "%s%s%s ", ca ? CA_MARKER : "", ca ? " " : "", name);
1.166 djm 647: if (!key_write(public, f))
648: fatal("key_write failed");
649: fprintf(f, "\n");
650: }
1.119 djm 651: }
652:
653: static void
654: do_known_hosts(struct passwd *pw, const char *name)
655: {
656: FILE *in, *out = stdout;
1.179 djm 657: Key *pub;
1.119 djm 658: char *cp, *cp2, *kp, *kp2;
659: char line[16*1024], tmp[MAXPATHLEN], old[MAXPATHLEN];
1.165 djm 660: int c, skip = 0, inplace = 0, num = 0, invalid = 0, has_unhashed = 0;
1.179 djm 661: int ca;
1.119 djm 662:
663: if (!have_identity) {
664: cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
665: if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
666: sizeof(identity_file))
667: fatal("Specified known hosts path too long");
668: xfree(cp);
669: have_identity = 1;
670: }
671: if ((in = fopen(identity_file, "r")) == NULL)
672: fatal("fopen: %s", strerror(errno));
673:
674: /*
675: * Find hosts goes to stdout, hash and deletions happen in-place
676: * A corner case is ssh-keygen -HF foo, which should go to stdout
677: */
678: if (!find_host && (hash_hosts || delete_host)) {
679: if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
680: strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
681: strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
682: strlcat(old, ".old", sizeof(old)) >= sizeof(old))
683: fatal("known_hosts path too long");
684: umask(077);
685: if ((c = mkstemp(tmp)) == -1)
686: fatal("mkstemp: %s", strerror(errno));
687: if ((out = fdopen(c, "w")) == NULL) {
688: c = errno;
689: unlink(tmp);
690: fatal("fdopen: %s", strerror(c));
691: }
692: inplace = 1;
693: }
694:
695: while (fgets(line, sizeof(line), in)) {
1.163 chl 696: if ((cp = strchr(line, '\n')) == NULL) {
1.165 djm 697: error("line %d too long: %.40s...", num + 1, line);
1.119 djm 698: skip = 1;
699: invalid = 1;
700: continue;
701: }
1.163 chl 702: num++;
1.119 djm 703: if (skip) {
704: skip = 0;
705: continue;
706: }
1.163 chl 707: *cp = '\0';
1.119 djm 708:
709: /* Skip leading whitespace, empty and comment lines. */
710: for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
711: ;
712: if (!*cp || *cp == '\n' || *cp == '#') {
713: if (inplace)
714: fprintf(out, "%s\n", cp);
715: continue;
716: }
1.179 djm 717: /* Check whether this is a CA key */
718: if (strncasecmp(cp, CA_MARKER, sizeof(CA_MARKER) - 1) == 0 &&
719: (cp[sizeof(CA_MARKER) - 1] == ' ' ||
720: cp[sizeof(CA_MARKER) - 1] == '\t')) {
721: ca = 1;
722: cp += sizeof(CA_MARKER);
723: } else
724: ca = 0;
725:
1.119 djm 726: /* Find the end of the host name portion. */
727: for (kp = cp; *kp && *kp != ' ' && *kp != '\t'; kp++)
728: ;
1.179 djm 729:
1.119 djm 730: if (*kp == '\0' || *(kp + 1) == '\0') {
731: error("line %d missing key: %.40s...",
732: num, line);
733: invalid = 1;
734: continue;
735: }
736: *kp++ = '\0';
737: kp2 = kp;
738:
1.179 djm 739: pub = key_new(KEY_RSA1);
740: if (key_read(pub, &kp) != 1) {
1.119 djm 741: kp = kp2;
1.179 djm 742: key_free(pub);
743: pub = key_new(KEY_UNSPEC);
744: if (key_read(pub, &kp) != 1) {
1.119 djm 745: error("line %d invalid key: %.40s...",
746: num, line);
1.179 djm 747: key_free(pub);
1.119 djm 748: invalid = 1;
749: continue;
750: }
751: }
752:
753: if (*cp == HASH_DELIM) {
754: if (find_host || delete_host) {
755: cp2 = host_hash(name, cp, strlen(cp));
756: if (cp2 == NULL) {
757: error("line %d: invalid hashed "
758: "name: %.64s...", num, line);
759: invalid = 1;
760: continue;
761: }
762: c = (strcmp(cp2, cp) == 0);
763: if (find_host && c) {
764: printf("# Host %s found: "
1.179 djm 765: "line %d type %s%s\n", name,
766: num, key_type(pub),
767: ca ? " (CA key)" : "");
768: printhost(out, cp, pub, ca, 0);
1.119 djm 769: }
1.179 djm 770: if (delete_host && !c && !ca)
771: printhost(out, cp, pub, ca, 0);
1.119 djm 772: } else if (hash_hosts)
1.179 djm 773: printhost(out, cp, pub, ca, 0);
1.119 djm 774: } else {
775: if (find_host || delete_host) {
776: c = (match_hostname(name, cp,
777: strlen(cp)) == 1);
778: if (find_host && c) {
779: printf("# Host %s found: "
1.179 djm 780: "line %d type %s%s\n", name,
781: num, key_type(pub),
782: ca ? " (CA key)" : "");
783: printhost(out, name, pub,
784: ca, hash_hosts && !ca);
1.119 djm 785: }
1.179 djm 786: if (delete_host && !c && !ca)
787: printhost(out, cp, pub, ca, 0);
1.119 djm 788: } else if (hash_hosts) {
1.121 deraadt 789: for (cp2 = strsep(&cp, ",");
1.119 djm 790: cp2 != NULL && *cp2 != '\0';
1.120 djm 791: cp2 = strsep(&cp, ",")) {
1.179 djm 792: if (ca) {
793: fprintf(stderr, "Warning: "
794: "ignoring CA key for host: "
795: "%.64s\n", cp2);
796: printhost(out, cp2, pub, ca, 0);
797: } else if (strcspn(cp2, "*?!") !=
798: strlen(cp2)) {
1.120 djm 799: fprintf(stderr, "Warning: "
800: "ignoring host name with "
801: "metacharacters: %.64s\n",
802: cp2);
1.179 djm 803: printhost(out, cp2, pub, ca, 0);
804: } else
805: printhost(out, cp2, pub, ca, 1);
1.120 djm 806: }
1.119 djm 807: has_unhashed = 1;
808: }
809: }
1.179 djm 810: key_free(pub);
1.119 djm 811: }
812: fclose(in);
813:
814: if (invalid) {
1.165 djm 815: fprintf(stderr, "%s is not a valid known_hosts file.\n",
1.119 djm 816: identity_file);
817: if (inplace) {
818: fprintf(stderr, "Not replacing existing known_hosts "
1.122 markus 819: "file because of errors\n");
1.119 djm 820: fclose(out);
821: unlink(tmp);
822: }
823: exit(1);
824: }
825:
826: if (inplace) {
827: fclose(out);
828:
829: /* Backup existing file */
830: if (unlink(old) == -1 && errno != ENOENT)
831: fatal("unlink %.100s: %s", old, strerror(errno));
832: if (link(identity_file, old) == -1)
833: fatal("link %.100s to %.100s: %s", identity_file, old,
834: strerror(errno));
835: /* Move new one into place */
836: if (rename(tmp, identity_file) == -1) {
837: error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
838: strerror(errno));
839: unlink(tmp);
840: unlink(old);
841: exit(1);
842: }
843:
844: fprintf(stderr, "%s updated.\n", identity_file);
845: fprintf(stderr, "Original contents retained as %s\n", old);
846: if (has_unhashed) {
847: fprintf(stderr, "WARNING: %s contains unhashed "
848: "entries\n", old);
849: fprintf(stderr, "Delete this file to ensure privacy "
1.128 djm 850: "of hostnames\n");
1.119 djm 851: }
852: }
853:
854: exit(0);
855: }
856:
1.13 deraadt 857: /*
858: * Perform changing a passphrase. The argument is the passwd structure
859: * for the current user.
860: */
1.63 itojun 861: static void
1.7 markus 862: do_change_passphrase(struct passwd *pw)
863: {
1.12 markus 864: char *comment;
865: char *old_passphrase, *passphrase1, *passphrase2;
866: struct stat st;
1.19 markus 867: Key *private;
1.12 markus 868:
869: if (!have_identity)
870: ask_filename(pw, "Enter file in which the key is");
871: if (stat(identity_file, &st) < 0) {
872: perror(identity_file);
873: exit(1);
874: }
875: /* Try to load the file with empty passphrase. */
1.52 markus 876: private = key_load_private(identity_file, "", &comment);
877: if (private == NULL) {
1.12 markus 878: if (identity_passphrase)
879: old_passphrase = xstrdup(identity_passphrase);
880: else
1.65 markus 881: old_passphrase =
882: read_passphrase("Enter old passphrase: ",
883: RP_ALLOW_STDIN);
884: private = key_load_private(identity_file, old_passphrase,
885: &comment);
1.52 markus 886: memset(old_passphrase, 0, strlen(old_passphrase));
887: xfree(old_passphrase);
888: if (private == NULL) {
1.12 markus 889: printf("Bad passphrase.\n");
890: exit(1);
891: }
892: }
893: printf("Key has comment '%s'\n", comment);
894:
895: /* Ask the new passphrase (twice). */
896: if (identity_new_passphrase) {
897: passphrase1 = xstrdup(identity_new_passphrase);
898: passphrase2 = NULL;
899: } else {
900: passphrase1 =
1.65 markus 901: read_passphrase("Enter new passphrase (empty for no "
902: "passphrase): ", RP_ALLOW_STDIN);
903: passphrase2 = read_passphrase("Enter same passphrase again: ",
1.86 deraadt 904: RP_ALLOW_STDIN);
1.12 markus 905:
906: /* Verify that they are the same. */
907: if (strcmp(passphrase1, passphrase2) != 0) {
908: memset(passphrase1, 0, strlen(passphrase1));
909: memset(passphrase2, 0, strlen(passphrase2));
910: xfree(passphrase1);
911: xfree(passphrase2);
912: printf("Pass phrases do not match. Try again.\n");
913: exit(1);
914: }
915: /* Destroy the other copy. */
916: memset(passphrase2, 0, strlen(passphrase2));
917: xfree(passphrase2);
918: }
919:
920: /* Save the file using the new passphrase. */
1.52 markus 921: if (!key_save_private(private, identity_file, passphrase1, comment)) {
1.56 markus 922: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 923: memset(passphrase1, 0, strlen(passphrase1));
924: xfree(passphrase1);
1.19 markus 925: key_free(private);
1.12 markus 926: xfree(comment);
927: exit(1);
928: }
929: /* Destroy the passphrase and the copy of the key in memory. */
930: memset(passphrase1, 0, strlen(passphrase1));
931: xfree(passphrase1);
1.19 markus 932: key_free(private); /* Destroys contents */
1.12 markus 933: xfree(comment);
1.1 deraadt 934:
1.12 markus 935: printf("Your identification has been saved with the new passphrase.\n");
936: exit(0);
1.1 deraadt 937: }
938:
1.105 jakob 939: /*
940: * Print the SSHFP RR.
941: */
1.138 jakob 942: static int
943: do_print_resource_record(struct passwd *pw, char *fname, char *hname)
1.105 jakob 944: {
945: Key *public;
946: char *comment = NULL;
947: struct stat st;
948:
1.138 jakob 949: if (fname == NULL)
1.105 jakob 950: ask_filename(pw, "Enter file in which the key is");
1.138 jakob 951: if (stat(fname, &st) < 0) {
952: if (errno == ENOENT)
953: return 0;
954: perror(fname);
1.105 jakob 955: exit(1);
956: }
1.138 jakob 957: public = key_load_public(fname, &comment);
1.105 jakob 958: if (public != NULL) {
1.116 avsm 959: export_dns_rr(hname, public, stdout, print_generic);
1.105 jakob 960: key_free(public);
961: xfree(comment);
1.138 jakob 962: return 1;
1.105 jakob 963: }
964: if (comment)
965: xfree(comment);
966:
1.138 jakob 967: printf("failed to read v2 public key from %s.\n", fname);
1.105 jakob 968: exit(1);
969: }
970:
1.13 deraadt 971: /*
972: * Change the comment of a private key file.
973: */
1.63 itojun 974: static void
1.2 provos 975: do_change_comment(struct passwd *pw)
1.1 deraadt 976: {
1.46 deraadt 977: char new_comment[1024], *comment, *passphrase;
1.52 markus 978: Key *private;
979: Key *public;
1.12 markus 980: struct stat st;
981: FILE *f;
1.46 deraadt 982: int fd;
1.12 markus 983:
984: if (!have_identity)
985: ask_filename(pw, "Enter file in which the key is");
986: if (stat(identity_file, &st) < 0) {
987: perror(identity_file);
988: exit(1);
989: }
1.52 markus 990: private = key_load_private(identity_file, "", &comment);
991: if (private == NULL) {
1.12 markus 992: if (identity_passphrase)
993: passphrase = xstrdup(identity_passphrase);
994: else if (identity_new_passphrase)
995: passphrase = xstrdup(identity_new_passphrase);
996: else
1.65 markus 997: passphrase = read_passphrase("Enter passphrase: ",
998: RP_ALLOW_STDIN);
1.12 markus 999: /* Try to load using the passphrase. */
1.52 markus 1000: private = key_load_private(identity_file, passphrase, &comment);
1001: if (private == NULL) {
1.12 markus 1002: memset(passphrase, 0, strlen(passphrase));
1003: xfree(passphrase);
1004: printf("Bad passphrase.\n");
1005: exit(1);
1006: }
1.52 markus 1007: } else {
1008: passphrase = xstrdup("");
1.12 markus 1009: }
1.52 markus 1010: if (private->type != KEY_RSA1) {
1011: fprintf(stderr, "Comments are only supported for RSA1 keys.\n");
1012: key_free(private);
1013: exit(1);
1.86 deraadt 1014: }
1.12 markus 1015: printf("Key now has comment '%s'\n", comment);
1016:
1017: if (identity_comment) {
1018: strlcpy(new_comment, identity_comment, sizeof(new_comment));
1019: } else {
1020: printf("Enter new comment: ");
1021: fflush(stdout);
1022: if (!fgets(new_comment, sizeof(new_comment), stdin)) {
1023: memset(passphrase, 0, strlen(passphrase));
1.19 markus 1024: key_free(private);
1.12 markus 1025: exit(1);
1026: }
1.162 gilles 1027: new_comment[strcspn(new_comment, "\n")] = '\0';
1.12 markus 1028: }
1029:
1030: /* Save the file using the new passphrase. */
1.52 markus 1031: if (!key_save_private(private, identity_file, passphrase, new_comment)) {
1.56 markus 1032: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 1033: memset(passphrase, 0, strlen(passphrase));
1034: xfree(passphrase);
1.19 markus 1035: key_free(private);
1.12 markus 1036: xfree(comment);
1037: exit(1);
1038: }
1039: memset(passphrase, 0, strlen(passphrase));
1040: xfree(passphrase);
1.52 markus 1041: public = key_from_private(private);
1.19 markus 1042: key_free(private);
1.12 markus 1043:
1044: strlcat(identity_file, ".pub", sizeof(identity_file));
1.46 deraadt 1045: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1046: if (fd == -1) {
1.12 markus 1047: printf("Could not save your public key in %s\n", identity_file);
1048: exit(1);
1049: }
1.46 deraadt 1050: f = fdopen(fd, "w");
1051: if (f == NULL) {
1.173 tobias 1052: printf("fdopen %s failed\n", identity_file);
1.46 deraadt 1053: exit(1);
1054: }
1.19 markus 1055: if (!key_write(public, f))
1.173 tobias 1056: fprintf(stderr, "write key failed\n");
1.19 markus 1057: key_free(public);
1058: fprintf(f, " %s\n", new_comment);
1.12 markus 1059: fclose(f);
1.1 deraadt 1060:
1.12 markus 1061: xfree(comment);
1.1 deraadt 1062:
1.12 markus 1063: printf("The comment in your key file has been changed.\n");
1064: exit(0);
1.1 deraadt 1065: }
1066:
1.179 djm 1067: static const char *
1.182 djm 1068: fmt_validity(u_int64_t valid_from, u_int64_t valid_to)
1.179 djm 1069: {
1070: char from[32], to[32];
1071: static char ret[64];
1072: time_t tt;
1073: struct tm *tm;
1074:
1075: *from = *to = '\0';
1.182 djm 1076: if (valid_from == 0 && valid_to == 0xffffffffffffffffULL)
1.179 djm 1077: return "forever";
1078:
1.182 djm 1079: if (valid_from != 0) {
1.179 djm 1080: /* XXX revisit INT_MAX in 2038 :) */
1.182 djm 1081: tt = valid_from > INT_MAX ? INT_MAX : valid_from;
1.179 djm 1082: tm = localtime(&tt);
1083: strftime(from, sizeof(from), "%Y-%m-%dT%H:%M:%S", tm);
1084: }
1.182 djm 1085: if (valid_to != 0xffffffffffffffffULL) {
1.179 djm 1086: /* XXX revisit INT_MAX in 2038 :) */
1.182 djm 1087: tt = valid_to > INT_MAX ? INT_MAX : valid_to;
1.179 djm 1088: tm = localtime(&tt);
1089: strftime(to, sizeof(to), "%Y-%m-%dT%H:%M:%S", tm);
1090: }
1091:
1.182 djm 1092: if (valid_from == 0) {
1.179 djm 1093: snprintf(ret, sizeof(ret), "before %s", to);
1094: return ret;
1095: }
1.182 djm 1096: if (valid_to == 0xffffffffffffffffULL) {
1.179 djm 1097: snprintf(ret, sizeof(ret), "after %s", from);
1098: return ret;
1099: }
1100:
1101: snprintf(ret, sizeof(ret), "from %s to %s", from, to);
1102: return ret;
1103: }
1104:
1105: static void
1.186 djm 1106: add_flag_option(Buffer *c, const char *name)
1.179 djm 1107: {
1108: debug3("%s: %s", __func__, name);
1109: buffer_put_cstring(c, name);
1110: buffer_put_string(c, NULL, 0);
1111: }
1112:
1113: static void
1.186 djm 1114: add_string_option(Buffer *c, const char *name, const char *value)
1.179 djm 1115: {
1116: Buffer b;
1117:
1118: debug3("%s: %s=%s", __func__, name, value);
1119: buffer_init(&b);
1120: buffer_put_cstring(&b, value);
1121:
1122: buffer_put_cstring(c, name);
1123: buffer_put_string(c, buffer_ptr(&b), buffer_len(&b));
1124:
1125: buffer_free(&b);
1126: }
1127:
1128: static void
1.186 djm 1129: prepare_options_buf(Buffer *c)
1.179 djm 1130: {
1131: buffer_clear(c);
1.186 djm 1132: if ((critical_flags & CRITOPT_X_FWD) != 0)
1133: add_flag_option(c, "permit-X11-forwarding");
1134: if ((critical_flags & CRITOPT_AGENT_FWD) != 0)
1135: add_flag_option(c, "permit-agent-forwarding");
1136: if ((critical_flags & CRITOPT_PORT_FWD) != 0)
1137: add_flag_option(c, "permit-port-forwarding");
1138: if ((critical_flags & CRITOPT_PTY) != 0)
1139: add_flag_option(c, "permit-pty");
1140: if ((critical_flags & CRITOPT_USER_RC) != 0)
1141: add_flag_option(c, "permit-user-rc");
1142: if (critical_command != NULL)
1143: add_string_option(c, "force-command", critical_command);
1144: if (critical_src_addr != NULL)
1145: add_string_option(c, "source-address", critical_src_addr);
1.179 djm 1146: }
1147:
1148: static void
1149: do_ca_sign(struct passwd *pw, int argc, char **argv)
1150: {
1151: int i, fd;
1152: u_int n;
1153: Key *ca, *public;
1154: char *otmp, *tmp, *cp, *out, *comment, **plist = NULL;
1155: FILE *f;
1.186 djm 1156: int v00 = 0; /* legacy keys */
1.179 djm 1157:
1158: tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
1159: if ((ca = load_identity(tmp)) == NULL)
1160: fatal("Couldn't load CA key \"%s\"", tmp);
1161: xfree(tmp);
1162:
1.186 djm 1163: if (key_type_name != NULL) {
1164: switch (key_type_from_name(key_type_name)) {
1165: case KEY_RSA_CERT_V00:
1166: case KEY_DSA_CERT_V00:
1167: v00 = 1;
1168: break;
1169: case KEY_UNSPEC:
1170: if (strcasecmp(key_type_name, "v00") == 0) {
1171: v00 = 1;
1172: break;
1173: } else if (strcasecmp(key_type_name, "v01") == 0)
1174: break;
1175: /* FALLTHROUGH */
1176: default:
1177: fprintf(stderr, "unknown key type %s\n", key_type_name);
1178: exit(1);
1179: }
1180: }
1181:
1.179 djm 1182: for (i = 0; i < argc; i++) {
1183: /* Split list of principals */
1184: n = 0;
1185: if (cert_principals != NULL) {
1186: otmp = tmp = xstrdup(cert_principals);
1187: plist = NULL;
1188: for (; (cp = strsep(&tmp, ",")) != NULL; n++) {
1189: plist = xrealloc(plist, n + 1, sizeof(*plist));
1190: if (*(plist[n] = xstrdup(cp)) == '\0')
1191: fatal("Empty principal name");
1192: }
1193: xfree(otmp);
1194: }
1195:
1196: tmp = tilde_expand_filename(argv[i], pw->pw_uid);
1197: if ((public = key_load_public(tmp, &comment)) == NULL)
1198: fatal("%s: unable to open \"%s\"", __func__, tmp);
1199: if (public->type != KEY_RSA && public->type != KEY_DSA)
1200: fatal("%s: key \"%s\" type %s cannot be certified",
1201: __func__, tmp, key_type(public));
1202:
1203: /* Prepare certificate to sign */
1.186 djm 1204: if (key_to_certified(public, v00) != 0)
1.179 djm 1205: fatal("Could not upgrade key %s to certificate", tmp);
1206: public->cert->type = cert_key_type;
1.186 djm 1207: public->cert->serial = (u_int64_t)cert_serial;
1.179 djm 1208: public->cert->key_id = xstrdup(cert_key_id);
1209: public->cert->nprincipals = n;
1210: public->cert->principals = plist;
1211: public->cert->valid_after = cert_valid_from;
1212: public->cert->valid_before = cert_valid_to;
1.186 djm 1213: prepare_options_buf(&public->cert->critical);
1.179 djm 1214: public->cert->signature_key = key_from_private(ca);
1215:
1216: if (key_certify(public, ca) != 0)
1217: fatal("Couldn't not certify key %s", tmp);
1218:
1219: if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0)
1220: *cp = '\0';
1221: xasprintf(&out, "%s-cert.pub", tmp);
1222: xfree(tmp);
1223:
1224: if ((fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
1225: fatal("Could not open \"%s\" for writing: %s", out,
1226: strerror(errno));
1227: if ((f = fdopen(fd, "w")) == NULL)
1228: fatal("%s: fdopen: %s", __func__, strerror(errno));
1229: if (!key_write(public, f))
1230: fatal("Could not write certified key to %s", out);
1231: fprintf(f, " %s\n", comment);
1232: fclose(f);
1233:
1.186 djm 1234: if (!quiet) {
1235: logit("Signed %s key %s: id \"%s\" serial %llu%s%s "
1236: "valid %s", key_cert_type(public),
1237: out, public->cert->key_id, public->cert->serial,
1.179 djm 1238: cert_principals != NULL ? " for " : "",
1239: cert_principals != NULL ? cert_principals : "",
1.182 djm 1240: fmt_validity(cert_valid_from, cert_valid_to));
1.186 djm 1241: }
1.179 djm 1242:
1243: key_free(public);
1244: xfree(out);
1245: }
1246: exit(0);
1247: }
1248:
1249: static u_int64_t
1250: parse_relative_time(const char *s, time_t now)
1251: {
1252: int64_t mul, secs;
1253:
1254: mul = *s == '-' ? -1 : 1;
1255:
1256: if ((secs = convtime(s + 1)) == -1)
1257: fatal("Invalid relative certificate time %s", s);
1258: if (mul == -1 && secs > now)
1259: fatal("Certificate time %s cannot be represented", s);
1260: return now + (u_int64_t)(secs * mul);
1261: }
1262:
1263: static u_int64_t
1264: parse_absolute_time(const char *s)
1265: {
1266: struct tm tm;
1267: time_t tt;
1.180 djm 1268: char buf[32], *fmt;
1.179 djm 1269:
1.180 djm 1270: /*
1271: * POSIX strptime says "The application shall ensure that there
1272: * is white-space or other non-alphanumeric characters between
1273: * any two conversion specifications" so arrange things this way.
1274: */
1275: switch (strlen(s)) {
1276: case 8:
1.184 djm 1277: fmt = "%Y-%m-%d";
1278: snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2s", s, s + 4, s + 6);
1.180 djm 1279: break;
1280: case 14:
1.184 djm 1281: fmt = "%Y-%m-%dT%H:%M:%S";
1282: snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2sT%.2s:%.2s:%.2s",
1.180 djm 1283: s, s + 4, s + 6, s + 8, s + 10, s + 12);
1284: break;
1285: default:
1.179 djm 1286: fatal("Invalid certificate time format %s", s);
1.180 djm 1287: }
1.179 djm 1288:
1289: bzero(&tm, sizeof(tm));
1.180 djm 1290: if (strptime(buf, fmt, &tm) == NULL)
1.179 djm 1291: fatal("Invalid certificate time %s", s);
1292: if ((tt = mktime(&tm)) < 0)
1293: fatal("Certificate time %s cannot be represented", s);
1294: return (u_int64_t)tt;
1295: }
1296:
1297: static void
1298: parse_cert_times(char *timespec)
1299: {
1300: char *from, *to;
1301: time_t now = time(NULL);
1302: int64_t secs;
1303:
1304: /* +timespec relative to now */
1305: if (*timespec == '+' && strchr(timespec, ':') == NULL) {
1306: if ((secs = convtime(timespec + 1)) == -1)
1307: fatal("Invalid relative certificate life %s", timespec);
1308: cert_valid_to = now + secs;
1309: /*
1310: * Backdate certificate one minute to avoid problems on hosts
1311: * with poorly-synchronised clocks.
1312: */
1313: cert_valid_from = ((now - 59)/ 60) * 60;
1314: return;
1315: }
1316:
1317: /*
1318: * from:to, where
1319: * from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
1320: * to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
1321: */
1322: from = xstrdup(timespec);
1323: to = strchr(from, ':');
1324: if (to == NULL || from == to || *(to + 1) == '\0')
1.181 djm 1325: fatal("Invalid certificate life specification %s", timespec);
1.179 djm 1326: *to++ = '\0';
1327:
1328: if (*from == '-' || *from == '+')
1329: cert_valid_from = parse_relative_time(from, now);
1330: else
1331: cert_valid_from = parse_absolute_time(from);
1332:
1333: if (*to == '-' || *to == '+')
1334: cert_valid_to = parse_relative_time(to, cert_valid_from);
1335: else
1336: cert_valid_to = parse_absolute_time(to);
1337:
1338: if (cert_valid_to <= cert_valid_from)
1339: fatal("Empty certificate validity interval");
1340: xfree(from);
1341: }
1342:
1343: static void
1.186 djm 1344: add_cert_option(char *opt)
1.179 djm 1345: {
1346: char *val;
1347:
1348: if (strcmp(opt, "clear") == 0)
1.186 djm 1349: critical_flags = 0;
1.179 djm 1350: else if (strcasecmp(opt, "no-x11-forwarding") == 0)
1.186 djm 1351: critical_flags &= ~CRITOPT_X_FWD;
1.179 djm 1352: else if (strcasecmp(opt, "permit-x11-forwarding") == 0)
1.186 djm 1353: critical_flags |= CRITOPT_X_FWD;
1.179 djm 1354: else if (strcasecmp(opt, "no-agent-forwarding") == 0)
1.186 djm 1355: critical_flags &= ~CRITOPT_AGENT_FWD;
1.179 djm 1356: else if (strcasecmp(opt, "permit-agent-forwarding") == 0)
1.186 djm 1357: critical_flags |= CRITOPT_AGENT_FWD;
1.179 djm 1358: else if (strcasecmp(opt, "no-port-forwarding") == 0)
1.186 djm 1359: critical_flags &= ~CRITOPT_PORT_FWD;
1.179 djm 1360: else if (strcasecmp(opt, "permit-port-forwarding") == 0)
1.186 djm 1361: critical_flags |= CRITOPT_PORT_FWD;
1.179 djm 1362: else if (strcasecmp(opt, "no-pty") == 0)
1.186 djm 1363: critical_flags &= ~CRITOPT_PTY;
1.179 djm 1364: else if (strcasecmp(opt, "permit-pty") == 0)
1.186 djm 1365: critical_flags |= CRITOPT_PTY;
1.179 djm 1366: else if (strcasecmp(opt, "no-user-rc") == 0)
1.186 djm 1367: critical_flags &= ~CRITOPT_USER_RC;
1.179 djm 1368: else if (strcasecmp(opt, "permit-user-rc") == 0)
1.186 djm 1369: critical_flags |= CRITOPT_USER_RC;
1.179 djm 1370: else if (strncasecmp(opt, "force-command=", 14) == 0) {
1371: val = opt + 14;
1372: if (*val == '\0')
1.186 djm 1373: fatal("Empty force-command option");
1374: if (critical_command != NULL)
1.179 djm 1375: fatal("force-command already specified");
1.186 djm 1376: critical_command = xstrdup(val);
1.179 djm 1377: } else if (strncasecmp(opt, "source-address=", 15) == 0) {
1378: val = opt + 15;
1379: if (*val == '\0')
1.186 djm 1380: fatal("Empty source-address option");
1381: if (critical_src_addr != NULL)
1.179 djm 1382: fatal("source-address already specified");
1383: if (addr_match_cidr_list(NULL, val) != 0)
1384: fatal("Invalid source-address list");
1.186 djm 1385: critical_src_addr = xstrdup(val);
1.179 djm 1386: } else
1.186 djm 1387: fatal("Unsupported certificate option \"%s\"", opt);
1.179 djm 1388: }
1389:
1.63 itojun 1390: static void
1.182 djm 1391: do_show_cert(struct passwd *pw)
1392: {
1393: Key *key;
1394: struct stat st;
1395: char *key_fp, *ca_fp;
1.186 djm 1396: Buffer options, option;
1.182 djm 1397: u_char *name, *data;
1.186 djm 1398: u_int i, dlen, v00;
1.182 djm 1399:
1400: if (!have_identity)
1401: ask_filename(pw, "Enter file in which the key is");
1402: if (stat(identity_file, &st) < 0) {
1403: perror(identity_file);
1404: exit(1);
1405: }
1406: if ((key = key_load_public(identity_file, NULL)) == NULL)
1407: fatal("%s is not a public key", identity_file);
1408: if (!key_is_cert(key))
1409: fatal("%s is not a certificate", identity_file);
1.186 djm 1410: v00 = key->type == KEY_RSA_CERT_V00 || key->type == KEY_DSA_CERT_V00;
1411:
1.182 djm 1412: key_fp = key_fingerprint(key, SSH_FP_MD5, SSH_FP_HEX);
1413: ca_fp = key_fingerprint(key->cert->signature_key,
1414: SSH_FP_MD5, SSH_FP_HEX);
1415:
1416: printf("%s:\n", identity_file);
1.186 djm 1417: printf(" Type: %s %s certificate\n", key_ssh_name(key),
1418: key_cert_type(key));
1419: printf(" Public key: %s %s\n", key_type(key), key_fp);
1420: printf(" Signing CA: %s %s\n",
1.182 djm 1421: key_type(key->cert->signature_key), ca_fp);
1.186 djm 1422: printf(" Key ID: \"%s\"\n", key->cert->key_id);
1423: if (!v00)
1424: printf(" Serial: %llu\n", key->cert->serial);
1.182 djm 1425: printf(" Valid: %s\n",
1426: fmt_validity(key->cert->valid_after, key->cert->valid_before));
1427: printf(" Principals: ");
1428: if (key->cert->nprincipals == 0)
1429: printf("(none)\n");
1430: else {
1431: for (i = 0; i < key->cert->nprincipals; i++)
1432: printf("\n %s",
1433: key->cert->principals[i]);
1434: printf("\n");
1435: }
1.186 djm 1436: printf(" Critical Options: ");
1437: if (buffer_len(&key->cert->critical) == 0)
1.182 djm 1438: printf("(none)\n");
1439: else {
1440: printf("\n");
1.186 djm 1441: buffer_init(&options);
1442: buffer_append(&options,
1443: buffer_ptr(&key->cert->critical),
1444: buffer_len(&key->cert->critical));
1445: buffer_init(&option);
1446: while (buffer_len(&options) != 0) {
1447: name = buffer_get_string(&options, NULL);
1448: data = buffer_get_string_ptr(&options, &dlen);
1449: buffer_append(&option, data, dlen);
1.182 djm 1450: printf(" %s", name);
1451: if (strcmp(name, "permit-X11-forwarding") == 0 ||
1452: strcmp(name, "permit-agent-forwarding") == 0 ||
1453: strcmp(name, "permit-port-forwarding") == 0 ||
1454: strcmp(name, "permit-pty") == 0 ||
1455: strcmp(name, "permit-user-rc") == 0)
1456: printf("\n");
1457: else if (strcmp(name, "force-command") == 0 ||
1458: strcmp(name, "source-address") == 0) {
1.186 djm 1459: data = buffer_get_string(&option, NULL);
1.182 djm 1460: printf(" %s\n", data);
1461: xfree(data);
1462: } else {
1.186 djm 1463: printf(" UNKNOWN OPTION (len %u)\n",
1464: buffer_len(&option));
1465: buffer_clear(&option);
1.182 djm 1466: }
1467: xfree(name);
1.186 djm 1468: if (buffer_len(&option) != 0)
1469: fatal("Option corrupt: extra data at end");
1470: }
1471: buffer_free(&option);
1472: buffer_free(&options);
1473: }
1474: if (!v00) {
1475: printf(" Extensions: ");
1476: if (buffer_len(&key->cert->extensions) == 0)
1477: printf("(none)\n");
1478: else {
1479: printf("\n");
1480: buffer_init(&options);
1481: buffer_append(&options,
1482: buffer_ptr(&key->cert->extensions),
1483: buffer_len(&key->cert->extensions));
1484: buffer_init(&option);
1485: while (buffer_len(&options) != 0) {
1486: name = buffer_get_string(&options, NULL);
1487: (void)buffer_get_string_ptr(&options, &dlen);
1488: printf(" %s UNKNOWN OPTION "
1489: "(len %u)\n", name, dlen);
1490: xfree(name);
1491: }
1492: buffer_free(&option);
1493: buffer_free(&options);
1.182 djm 1494: }
1495: }
1496: exit(0);
1497: }
1498:
1499: static void
1.10 markus 1500: usage(void)
1501: {
1.161 sobrado 1502: fprintf(stderr, "usage: %s [options]\n", __progname);
1.77 jakob 1503: fprintf(stderr, "Options:\n");
1.123 otto 1504: fprintf(stderr, " -a trials Number of trials for screening DH-GEX moduli.\n");
1505: fprintf(stderr, " -B Show bubblebabble digest of key file.\n");
1.77 jakob 1506: fprintf(stderr, " -b bits Number of bits in the key to create.\n");
1.123 otto 1507: fprintf(stderr, " -C comment Provide new comment.\n");
1.77 jakob 1508: fprintf(stderr, " -c Change comment in private and public key files.\n");
1.177 markus 1509: #ifdef ENABLE_PKCS11
1510: fprintf(stderr, " -D pkcs11 Download public key from pkcs11 token.\n");
1511: #endif
1.159 jmc 1512: fprintf(stderr, " -e Convert OpenSSH to RFC 4716 key file.\n");
1.123 otto 1513: fprintf(stderr, " -F hostname Find hostname in known hosts file.\n");
1.77 jakob 1514: fprintf(stderr, " -f filename Filename of the key file.\n");
1.123 otto 1515: fprintf(stderr, " -G file Generate candidates for DH-GEX moduli.\n");
1.105 jakob 1516: fprintf(stderr, " -g Use generic DNS resource record format.\n");
1.123 otto 1517: fprintf(stderr, " -H Hash names in known_hosts file.\n");
1.179 djm 1518: fprintf(stderr, " -h Generate host certificate instead of a user certificate.\n");
1519: fprintf(stderr, " -I key_id Key identifier to include in certificate.\n");
1.159 jmc 1520: fprintf(stderr, " -i Convert RFC 4716 to OpenSSH key file.\n");
1.182 djm 1521: fprintf(stderr, " -L Print the contents of a certificate.\n");
1.77 jakob 1522: fprintf(stderr, " -l Show fingerprint of key file.\n");
1.123 otto 1523: fprintf(stderr, " -M memory Amount of memory (MB) to use for generating DH-GEX moduli.\n");
1.179 djm 1524: fprintf(stderr, " -n name,... User/host principal names to include in certificate\n");
1.123 otto 1525: fprintf(stderr, " -N phrase Provide new passphrase.\n");
1.187 ! jmc 1526: fprintf(stderr, " -O option Specify a certificate option.\n");
1.123 otto 1527: fprintf(stderr, " -P phrase Provide old passphrase.\n");
1.77 jakob 1528: fprintf(stderr, " -p Change passphrase of private key file.\n");
1529: fprintf(stderr, " -q Quiet.\n");
1.123 otto 1530: fprintf(stderr, " -R hostname Remove host from known_hosts file.\n");
1531: fprintf(stderr, " -r hostname Print DNS resource record.\n");
1.179 djm 1532: fprintf(stderr, " -s ca_key Certify keys with CA key.\n");
1.123 otto 1533: fprintf(stderr, " -S start Start point (hex) for generating DH-GEX moduli.\n");
1534: fprintf(stderr, " -T file Screen candidates for DH-GEX moduli.\n");
1.77 jakob 1535: fprintf(stderr, " -t type Specify type of key to create.\n");
1.179 djm 1536: fprintf(stderr, " -V from:to Specify certificate validity interval.\n");
1.123 otto 1537: fprintf(stderr, " -v Verbose.\n");
1538: fprintf(stderr, " -W gen Generator to use for generating DH-GEX moduli.\n");
1539: fprintf(stderr, " -y Read private key file and print public key.\n");
1.187 ! jmc 1540: fprintf(stderr, " -z serial Specify a serial number.\n");
1.107 djm 1541:
1.12 markus 1542: exit(1);
1.10 markus 1543: }
1544:
1.13 deraadt 1545: /*
1546: * Main program for key management.
1547: */
1.2 provos 1548: int
1.156 deraadt 1549: main(int argc, char **argv)
1.1 deraadt 1550: {
1.87 djm 1551: char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
1.177 markus 1552: char out_file[MAXPATHLEN], *pkcs11provider = NULL;
1.119 djm 1553: char *rr_hostname = NULL;
1.46 deraadt 1554: Key *private, *public;
1.12 markus 1555: struct passwd *pw;
1556: struct stat st;
1.177 markus 1557: int opt, type, fd;
1.126 dtucker 1558: u_int32_t memory = 0, generator_wanted = 0, trials = 100;
1.107 djm 1559: int do_gen_candidates = 0, do_screen_candidates = 0;
1560: BIGNUM *start = NULL;
1.12 markus 1561: FILE *f;
1.125 avsm 1562: const char *errstr;
1.33 markus 1563:
1.12 markus 1564: extern int optind;
1565: extern char *optarg;
1.129 djm 1566:
1567: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
1568: sanitise_stdfd();
1.12 markus 1569:
1.26 markus 1570: SSLeay_add_all_algorithms();
1.156 deraadt 1571: log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
1.19 markus 1572:
1.14 markus 1573: /* we need this for the home * directory. */
1.12 markus 1574: pw = getpwuid(getuid());
1575: if (!pw) {
1576: printf("You don't exist, go away!\n");
1577: exit(1);
1578: }
1.19 markus 1579: if (gethostname(hostname, sizeof(hostname)) < 0) {
1580: perror("gethostname");
1581: exit(1);
1582: }
1.14 markus 1583:
1.182 djm 1584: while ((opt = getopt(argc, argv, "degiqpclBHLhvxXyF:b:f:t:D:I:P:N:n:"
1.186 djm 1585: "O:C:r:g:R:T:G:M:S:s:a:V:W:z:")) != -1) {
1.12 markus 1586: switch (opt) {
1587: case 'b':
1.142 deraadt 1588: bits = (u_int32_t)strtonum(optarg, 768, 32768, &errstr);
1.125 avsm 1589: if (errstr)
1590: fatal("Bits has bad value %s (%s)",
1591: optarg, errstr);
1.12 markus 1592: break;
1.119 djm 1593: case 'F':
1594: find_host = 1;
1595: rr_hostname = optarg;
1596: break;
1597: case 'H':
1598: hash_hosts = 1;
1599: break;
1.179 djm 1600: case 'I':
1601: cert_key_id = optarg;
1602: break;
1.119 djm 1603: case 'R':
1604: delete_host = 1;
1605: rr_hostname = optarg;
1606: break;
1.182 djm 1607: case 'L':
1608: show_cert = 1;
1609: break;
1.12 markus 1610: case 'l':
1611: print_fingerprint = 1;
1612: break;
1.49 markus 1613: case 'B':
1614: print_bubblebabble = 1;
1615: break;
1.179 djm 1616: case 'n':
1617: cert_principals = optarg;
1618: break;
1.12 markus 1619: case 'p':
1620: change_passphrase = 1;
1621: break;
1622: case 'c':
1623: change_comment = 1;
1624: break;
1625: case 'f':
1.124 avsm 1626: if (strlcpy(identity_file, optarg, sizeof(identity_file)) >=
1627: sizeof(identity_file))
1628: fatal("Identity filename too long");
1.12 markus 1629: have_identity = 1;
1630: break;
1.105 jakob 1631: case 'g':
1632: print_generic = 1;
1633: break;
1.12 markus 1634: case 'P':
1635: identity_passphrase = optarg;
1636: break;
1637: case 'N':
1638: identity_new_passphrase = optarg;
1639: break;
1.179 djm 1640: case 'O':
1.186 djm 1641: add_cert_option(optarg);
1.179 djm 1642: break;
1.12 markus 1643: case 'C':
1644: identity_comment = optarg;
1645: break;
1646: case 'q':
1647: quiet = 1;
1.20 deraadt 1648: break;
1.57 markus 1649: case 'e':
1.19 markus 1650: case 'x':
1.57 markus 1651: /* export key */
1.19 markus 1652: convert_to_ssh2 = 1;
1653: break;
1.179 djm 1654: case 'h':
1655: cert_key_type = SSH2_CERT_TYPE_HOST;
1.186 djm 1656: critical_flags = 0;
1.179 djm 1657: break;
1.57 markus 1658: case 'i':
1.19 markus 1659: case 'X':
1.57 markus 1660: /* import key */
1.19 markus 1661: convert_from_ssh2 = 1;
1662: break;
1663: case 'y':
1664: print_public = 1;
1.47 jakob 1665: break;
1.19 markus 1666: case 'd':
1.33 markus 1667: key_type_name = "dsa";
1.19 markus 1668: break;
1.179 djm 1669: case 's':
1670: ca_key_path = optarg;
1671: break;
1.33 markus 1672: case 't':
1673: key_type_name = optarg;
1674: break;
1.75 markus 1675: case 'D':
1.177 markus 1676: pkcs11provider = optarg;
1.66 markus 1677: break;
1.113 djm 1678: case 'v':
1679: if (log_level == SYSLOG_LEVEL_INFO)
1680: log_level = SYSLOG_LEVEL_DEBUG1;
1681: else {
1.117 deraadt 1682: if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
1.113 djm 1683: log_level < SYSLOG_LEVEL_DEBUG3)
1684: log_level++;
1685: }
1686: break;
1.105 jakob 1687: case 'r':
1.119 djm 1688: rr_hostname = optarg;
1.105 jakob 1689: break;
1.107 djm 1690: case 'W':
1.142 deraadt 1691: generator_wanted = (u_int32_t)strtonum(optarg, 1,
1692: UINT_MAX, &errstr);
1.124 avsm 1693: if (errstr)
1694: fatal("Desired generator has bad value: %s (%s)",
1695: optarg, errstr);
1.107 djm 1696: break;
1697: case 'a':
1.142 deraadt 1698: trials = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr);
1.124 avsm 1699: if (errstr)
1700: fatal("Invalid number of trials: %s (%s)",
1701: optarg, errstr);
1.107 djm 1702: break;
1703: case 'M':
1.142 deraadt 1704: memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr);
1.186 djm 1705: if (errstr)
1.124 avsm 1706: fatal("Memory limit is %s: %s", errstr, optarg);
1.107 djm 1707: break;
1708: case 'G':
1709: do_gen_candidates = 1;
1.124 avsm 1710: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
1711: sizeof(out_file))
1712: fatal("Output filename too long");
1.107 djm 1713: break;
1714: case 'T':
1715: do_screen_candidates = 1;
1.124 avsm 1716: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
1717: sizeof(out_file))
1718: fatal("Output filename too long");
1.107 djm 1719: break;
1720: case 'S':
1721: /* XXX - also compare length against bits */
1722: if (BN_hex2bn(&start, optarg) == 0)
1723: fatal("Invalid start point.");
1724: break;
1.179 djm 1725: case 'V':
1726: parse_cert_times(optarg);
1.186 djm 1727: break;
1728: case 'z':
1729: cert_serial = strtonum(optarg, 0, LLONG_MAX, &errstr);
1730: if (errstr)
1731: fatal("Invalid serial number: %s", errstr);
1.179 djm 1732: break;
1.12 markus 1733: case '?':
1734: default:
1735: usage();
1736: }
1737: }
1.113 djm 1738:
1739: /* reinit */
1.156 deraadt 1740: log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
1.113 djm 1741:
1.179 djm 1742: argv += optind;
1743: argc -= optind;
1744:
1745: if (ca_key_path != NULL) {
1746: if (argc < 1) {
1747: printf("Too few arguments.\n");
1748: usage();
1749: }
1750: } else if (argc > 0) {
1.12 markus 1751: printf("Too many arguments.\n");
1.87 djm 1752: usage();
1753: }
1.12 markus 1754: if (change_passphrase && change_comment) {
1755: printf("Can only have one of -p and -c.\n");
1.166 djm 1756: usage();
1757: }
1758: if (print_fingerprint && (delete_host || hash_hosts)) {
1759: printf("Cannot use -l with -D or -R.\n");
1.12 markus 1760: usage();
1.179 djm 1761: }
1762: if (ca_key_path != NULL) {
1763: if (cert_key_id == NULL)
1764: fatal("Must specify key id (-I) when certifying");
1765: do_ca_sign(pw, argc, argv);
1.12 markus 1766: }
1.182 djm 1767: if (show_cert)
1768: do_show_cert(pw);
1.119 djm 1769: if (delete_host || hash_hosts || find_host)
1770: do_known_hosts(pw, rr_hostname);
1.49 markus 1771: if (print_fingerprint || print_bubblebabble)
1.12 markus 1772: do_fingerprint(pw);
1773: if (change_passphrase)
1774: do_change_passphrase(pw);
1775: if (change_comment)
1776: do_change_comment(pw);
1.19 markus 1777: if (convert_to_ssh2)
1778: do_convert_to_ssh2(pw);
1779: if (convert_from_ssh2)
1780: do_convert_from_ssh2(pw);
1781: if (print_public)
1782: do_print_public(pw);
1.119 djm 1783: if (rr_hostname != NULL) {
1.138 jakob 1784: unsigned int n = 0;
1785:
1786: if (have_identity) {
1787: n = do_print_resource_record(pw,
1788: identity_file, rr_hostname);
1789: if (n == 0) {
1790: perror(identity_file);
1791: exit(1);
1792: }
1793: exit(0);
1794: } else {
1795:
1796: n += do_print_resource_record(pw,
1797: _PATH_HOST_RSA_KEY_FILE, rr_hostname);
1798: n += do_print_resource_record(pw,
1799: _PATH_HOST_DSA_KEY_FILE, rr_hostname);
1800:
1801: if (n == 0)
1802: fatal("no keys found.");
1803: exit(0);
1804: }
1.105 jakob 1805: }
1.177 markus 1806: if (pkcs11provider != NULL)
1807: do_download(pw, pkcs11provider);
1.107 djm 1808:
1809: if (do_gen_candidates) {
1810: FILE *out = fopen(out_file, "w");
1.111 djm 1811:
1.107 djm 1812: if (out == NULL) {
1813: error("Couldn't open modulus candidate file \"%s\": %s",
1814: out_file, strerror(errno));
1815: return (1);
1816: }
1.130 markus 1817: if (bits == 0)
1818: bits = DEFAULT_BITS;
1.107 djm 1819: if (gen_candidates(out, memory, bits, start) != 0)
1.131 stevesk 1820: fatal("modulus candidate generation failed");
1.107 djm 1821:
1822: return (0);
1823: }
1824:
1825: if (do_screen_candidates) {
1826: FILE *in;
1827: FILE *out = fopen(out_file, "w");
1828:
1829: if (have_identity && strcmp(identity_file, "-") != 0) {
1830: if ((in = fopen(identity_file, "r")) == NULL) {
1831: fatal("Couldn't open modulus candidate "
1.111 djm 1832: "file \"%s\": %s", identity_file,
1.107 djm 1833: strerror(errno));
1834: }
1835: } else
1836: in = stdin;
1837:
1838: if (out == NULL) {
1839: fatal("Couldn't open moduli file \"%s\": %s",
1840: out_file, strerror(errno));
1841: }
1842: if (prime_test(in, out, trials, generator_wanted) != 0)
1.131 stevesk 1843: fatal("modulus screening failed");
1.108 markus 1844: return (0);
1.75 markus 1845: }
1.12 markus 1846:
1847: arc4random_stir();
1848:
1.133 djm 1849: if (key_type_name == NULL)
1850: key_type_name = "rsa";
1851:
1.35 markus 1852: type = key_type_from_name(key_type_name);
1853: if (type == KEY_UNSPEC) {
1854: fprintf(stderr, "unknown key type %s\n", key_type_name);
1855: exit(1);
1.19 markus 1856: }
1.135 dtucker 1857: if (bits == 0)
1858: bits = (type == KEY_DSA) ? DEFAULT_BITS_DSA : DEFAULT_BITS;
1.134 dtucker 1859: if (type == KEY_DSA && bits != 1024)
1860: fatal("DSA keys must be 1024 bits");
1.33 markus 1861: if (!quiet)
1.35 markus 1862: printf("Generating public/private %s key pair.\n", key_type_name);
1.33 markus 1863: private = key_generate(type, bits);
1864: if (private == NULL) {
1.173 tobias 1865: fprintf(stderr, "key_generate failed\n");
1.33 markus 1866: exit(1);
1867: }
1868: public = key_from_private(private);
1.12 markus 1869:
1870: if (!have_identity)
1871: ask_filename(pw, "Enter file in which to save the key");
1872:
1.132 djm 1873: /* Create ~/.ssh directory if it doesn't already exist. */
1.40 markus 1874: snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR);
1.12 markus 1875: if (strstr(identity_file, dotsshdir) != NULL &&
1876: stat(dotsshdir, &st) < 0) {
1.29 djm 1877: if (mkdir(dotsshdir, 0700) < 0)
1.12 markus 1878: error("Could not create directory '%s'.", dotsshdir);
1879: else if (!quiet)
1880: printf("Created directory '%s'.\n", dotsshdir);
1881: }
1882: /* If the file already exists, ask the user to confirm. */
1883: if (stat(identity_file, &st) >= 0) {
1884: char yesno[3];
1885: printf("%s already exists.\n", identity_file);
1886: printf("Overwrite (y/n)? ");
1887: fflush(stdout);
1888: if (fgets(yesno, sizeof(yesno), stdin) == NULL)
1889: exit(1);
1890: if (yesno[0] != 'y' && yesno[0] != 'Y')
1891: exit(1);
1892: }
1893: /* Ask for a passphrase (twice). */
1894: if (identity_passphrase)
1895: passphrase1 = xstrdup(identity_passphrase);
1896: else if (identity_new_passphrase)
1897: passphrase1 = xstrdup(identity_new_passphrase);
1898: else {
1899: passphrase_again:
1900: passphrase1 =
1.65 markus 1901: read_passphrase("Enter passphrase (empty for no "
1902: "passphrase): ", RP_ALLOW_STDIN);
1903: passphrase2 = read_passphrase("Enter same passphrase again: ",
1904: RP_ALLOW_STDIN);
1.12 markus 1905: if (strcmp(passphrase1, passphrase2) != 0) {
1.65 markus 1906: /*
1907: * The passphrases do not match. Clear them and
1908: * retry.
1909: */
1.12 markus 1910: memset(passphrase1, 0, strlen(passphrase1));
1911: memset(passphrase2, 0, strlen(passphrase2));
1912: xfree(passphrase1);
1913: xfree(passphrase2);
1914: printf("Passphrases do not match. Try again.\n");
1915: goto passphrase_again;
1916: }
1917: /* Clear the other copy of the passphrase. */
1918: memset(passphrase2, 0, strlen(passphrase2));
1919: xfree(passphrase2);
1920: }
1921:
1922: if (identity_comment) {
1923: strlcpy(comment, identity_comment, sizeof(comment));
1924: } else {
1.172 stevesk 1925: /* Create default comment field for the passphrase. */
1.12 markus 1926: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
1927: }
1928:
1929: /* Save the key with the given passphrase and comment. */
1.52 markus 1930: if (!key_save_private(private, identity_file, passphrase1, comment)) {
1.56 markus 1931: printf("Saving the key failed: %s.\n", identity_file);
1.12 markus 1932: memset(passphrase1, 0, strlen(passphrase1));
1933: xfree(passphrase1);
1934: exit(1);
1935: }
1936: /* Clear the passphrase. */
1937: memset(passphrase1, 0, strlen(passphrase1));
1938: xfree(passphrase1);
1939:
1940: /* Clear the private key and the random number generator. */
1.33 markus 1941: key_free(private);
1.12 markus 1942: arc4random_stir();
1943:
1944: if (!quiet)
1945: printf("Your identification has been saved in %s.\n", identity_file);
1946:
1947: strlcat(identity_file, ".pub", sizeof(identity_file));
1.46 deraadt 1948: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1949: if (fd == -1) {
1.12 markus 1950: printf("Could not save your public key in %s\n", identity_file);
1.46 deraadt 1951: exit(1);
1952: }
1953: f = fdopen(fd, "w");
1954: if (f == NULL) {
1.173 tobias 1955: printf("fdopen %s failed\n", identity_file);
1.12 markus 1956: exit(1);
1957: }
1.19 markus 1958: if (!key_write(public, f))
1.173 tobias 1959: fprintf(stderr, "write key failed\n");
1.19 markus 1960: fprintf(f, " %s\n", comment);
1.12 markus 1961: fclose(f);
1962:
1963: if (!quiet) {
1.50 markus 1964: char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX);
1.167 grunk 1965: char *ra = key_fingerprint(public, SSH_FP_MD5,
1966: SSH_FP_RANDOMART);
1.19 markus 1967: printf("Your public key has been saved in %s.\n",
1968: identity_file);
1.12 markus 1969: printf("The key fingerprint is:\n");
1.50 markus 1970: printf("%s %s\n", fp, comment);
1.167 grunk 1971: printf("The key's randomart image is:\n");
1972: printf("%s\n", ra);
1973: xfree(ra);
1.50 markus 1974: xfree(fp);
1.12 markus 1975: }
1.19 markus 1976:
1977: key_free(public);
1.12 markus 1978: exit(0);
1.1 deraadt 1979: }
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