Annotation of src/usr.bin/ssh/ssh-keygen.c, Revision 1.322
1.322 ! djm 1: /* $OpenBSD: ssh-keygen.c,v 1.321 2018/09/13 02:08:33 djm Exp $ */
1.1 deraadt 2: /*
1.13 deraadt 3: * Author: Tatu Ylonen <ylo@cs.hut.fi>
4: * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5: * All rights reserved
6: * Identity and host key generation and maintenance.
1.31 deraadt 7: *
8: * As far as I am concerned, the code I have written for this software
9: * can be used freely for any purpose. Any derived versions of this
10: * software must be clearly marked as such, and if the derived work is
11: * incompatible with the protocol description in the RFC file, it must be
12: * called by a name other than "ssh" or "Secure Shell".
1.13 deraadt 13: */
1.1 deraadt 14:
1.136 stevesk 15: #include <sys/types.h>
1.174 dtucker 16: #include <sys/socket.h>
1.136 stevesk 17: #include <sys/stat.h>
1.19 markus 18:
19: #include <openssl/evp.h>
20: #include <openssl/pem.h>
1.145 stevesk 21:
1.148 stevesk 22: #include <errno.h>
1.147 stevesk 23: #include <fcntl.h>
1.248 djm 24: #include <netdb.h>
1.145 stevesk 25: #include <pwd.h>
1.153 stevesk 26: #include <stdio.h>
1.152 stevesk 27: #include <stdlib.h>
1.150 stevesk 28: #include <string.h>
1.149 stevesk 29: #include <unistd.h>
1.253 deraadt 30: #include <limits.h>
1.294 djm 31: #include <locale.h>
1.1 deraadt 32:
33: #include "xmalloc.h"
1.252 djm 34: #include "sshkey.h"
1.19 markus 35: #include "authfile.h"
36: #include "uuencode.h"
1.252 djm 37: #include "sshbuf.h"
1.40 markus 38: #include "pathnames.h"
1.41 markus 39: #include "log.h"
1.114 djm 40: #include "misc.h"
1.119 djm 41: #include "match.h"
42: #include "hostfile.h"
1.146 stevesk 43: #include "dns.h"
1.223 djm 44: #include "ssh.h"
1.179 djm 45: #include "ssh2.h"
1.252 djm 46: #include "ssherr.h"
1.223 djm 47: #include "atomicio.h"
48: #include "krl.h"
1.251 djm 49: #include "digest.h"
1.294 djm 50: #include "utf8.h"
1.305 djm 51: #include "authfd.h"
1.32 markus 52:
1.177 markus 53: #ifdef ENABLE_PKCS11
54: #include "ssh-pkcs11.h"
1.106 djm 55: #endif
1.66 markus 56:
1.273 djm 57: #ifdef WITH_OPENSSL
58: # define DEFAULT_KEY_TYPE_NAME "rsa"
59: #else
60: # define DEFAULT_KEY_TYPE_NAME "ed25519"
61: #endif
62:
1.130 markus 63: /* Number of bits in the RSA/DSA key. This value can be set on the command line. */
64: #define DEFAULT_BITS 2048
65: #define DEFAULT_BITS_DSA 1024
1.203 naddy 66: #define DEFAULT_BITS_ECDSA 256
1.130 markus 67: u_int32_t bits = 0;
1.1 deraadt 68:
1.14 markus 69: /*
70: * Flag indicating that we just want to change the passphrase. This can be
71: * set on the command line.
72: */
1.1 deraadt 73: int change_passphrase = 0;
74:
1.14 markus 75: /*
76: * Flag indicating that we just want to change the comment. This can be set
77: * on the command line.
78: */
1.1 deraadt 79: int change_comment = 0;
80:
1.2 provos 81: int quiet = 0;
82:
1.169 grunk 83: int log_level = SYSLOG_LEVEL_INFO;
84:
1.119 djm 85: /* Flag indicating that we want to hash a known_hosts file */
86: int hash_hosts = 0;
87: /* Flag indicating that we want lookup a host in known_hosts file */
88: int find_host = 0;
89: /* Flag indicating that we want to delete a host from a known_hosts file */
90: int delete_host = 0;
91:
1.182 djm 92: /* Flag indicating that we want to show the contents of a certificate */
93: int show_cert = 0;
94:
1.8 markus 95: /* Flag indicating that we just want to see the key fingerprint */
96: int print_fingerprint = 0;
1.49 markus 97: int print_bubblebabble = 0;
1.8 markus 98:
1.251 djm 99: /* Hash algorithm to use for fingerprints. */
100: int fingerprint_hash = SSH_FP_HASH_DEFAULT;
101:
1.10 markus 102: /* The identity file name, given on the command line or entered by the user. */
103: char identity_file[1024];
104: int have_identity = 0;
1.1 deraadt 105:
106: /* This is set to the passphrase if given on the command line. */
107: char *identity_passphrase = NULL;
108:
109: /* This is set to the new passphrase if given on the command line. */
110: char *identity_new_passphrase = NULL;
111:
112: /* This is set to the new comment if given on the command line. */
113: char *identity_comment = NULL;
114:
1.179 djm 115: /* Path to CA key when certifying keys. */
116: char *ca_key_path = NULL;
117:
1.305 djm 118: /* Prefer to use agent keys for CA signing */
119: int prefer_agent = 0;
120:
1.186 djm 121: /* Certificate serial number */
1.220 djm 122: unsigned long long cert_serial = 0;
1.186 djm 123:
1.179 djm 124: /* Key type when certifying */
125: u_int cert_key_type = SSH2_CERT_TYPE_USER;
126:
127: /* "key ID" of signed key */
128: char *cert_key_id = NULL;
129:
130: /* Comma-separated list of principal names for certifying keys */
131: char *cert_principals = NULL;
132:
133: /* Validity period for certificates */
134: u_int64_t cert_valid_from = 0;
135: u_int64_t cert_valid_to = ~0ULL;
136:
1.186 djm 137: /* Certificate options */
1.190 djm 138: #define CERTOPT_X_FWD (1)
139: #define CERTOPT_AGENT_FWD (1<<1)
140: #define CERTOPT_PORT_FWD (1<<2)
141: #define CERTOPT_PTY (1<<3)
142: #define CERTOPT_USER_RC (1<<4)
143: #define CERTOPT_DEFAULT (CERTOPT_X_FWD|CERTOPT_AGENT_FWD| \
144: CERTOPT_PORT_FWD|CERTOPT_PTY|CERTOPT_USER_RC)
145: u_int32_t certflags_flags = CERTOPT_DEFAULT;
146: char *certflags_command = NULL;
147: char *certflags_src_addr = NULL;
1.179 djm 148:
1.300 djm 149: /* Arbitrary extensions specified by user */
150: struct cert_userext {
151: char *key;
152: char *val;
153: int crit;
154: };
155: struct cert_userext *cert_userext;
156: size_t ncert_userext;
157:
1.193 djm 158: /* Conversion to/from various formats */
159: int convert_to = 0;
160: int convert_from = 0;
161: enum {
162: FMT_RFC4716,
163: FMT_PKCS8,
164: FMT_PEM
165: } convert_format = FMT_RFC4716;
1.19 markus 166: int print_public = 0;
1.105 jakob 167: int print_generic = 0;
1.33 markus 168:
1.87 djm 169: char *key_type_name = NULL;
1.19 markus 170:
1.197 djm 171: /* Load key from this PKCS#11 provider */
172: char *pkcs11provider = NULL;
1.193 djm 173:
1.237 markus 174: /* Use new OpenSSH private key format when writing SSH2 keys instead of PEM */
1.319 djm 175: int use_new_format = 1;
1.237 markus 176:
177: /* Cipher for new-format private keys */
178: char *new_format_cipher = NULL;
179:
180: /*
181: * Number of KDF rounds to derive new format keys /
182: * number of primality trials when screening moduli.
183: */
184: int rounds = 0;
185:
1.10 markus 186: /* argv0 */
187: extern char *__progname;
1.1 deraadt 188:
1.248 djm 189: char hostname[NI_MAXHOST];
1.19 markus 190:
1.274 djm 191: #ifdef WITH_OPENSSL
1.115 djm 192: /* moduli.c */
1.124 avsm 193: int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *);
1.215 dtucker 194: int prime_test(FILE *, FILE *, u_int32_t, u_int32_t, char *, unsigned long,
195: unsigned long);
1.274 djm 196: #endif
1.115 djm 197:
1.63 itojun 198: static void
1.255 djm 199: type_bits_valid(int type, const char *name, u_int32_t *bitsp)
1.206 stevesk 200: {
1.271 djm 201: #ifdef WITH_OPENSSL
1.255 djm 202: u_int maxbits, nid;
1.271 djm 203: #endif
1.206 stevesk 204:
1.269 djm 205: if (type == KEY_UNSPEC)
206: fatal("unknown key type %s", key_type_name);
1.209 djm 207: if (*bitsp == 0) {
1.271 djm 208: #ifdef WITH_OPENSSL
1.206 stevesk 209: if (type == KEY_DSA)
1.209 djm 210: *bitsp = DEFAULT_BITS_DSA;
1.255 djm 211: else if (type == KEY_ECDSA) {
212: if (name != NULL &&
213: (nid = sshkey_ecdsa_nid_from_name(name)) > 0)
214: *bitsp = sshkey_curve_nid_to_bits(nid);
215: if (*bitsp == 0)
216: *bitsp = DEFAULT_BITS_ECDSA;
1.291 dtucker 217: } else
1.271 djm 218: #endif
1.209 djm 219: *bitsp = DEFAULT_BITS;
1.206 stevesk 220: }
1.271 djm 221: #ifdef WITH_OPENSSL
1.206 stevesk 222: maxbits = (type == KEY_DSA) ?
223: OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS;
1.269 djm 224: if (*bitsp > maxbits)
225: fatal("key bits exceeds maximum %d", maxbits);
1.303 djm 226: switch (type) {
227: case KEY_DSA:
228: if (*bitsp != 1024)
229: fatal("Invalid DSA key length: must be 1024 bits");
230: break;
231: case KEY_RSA:
232: if (*bitsp < SSH_RSA_MINIMUM_MODULUS_SIZE)
233: fatal("Invalid RSA key length: minimum is %d bits",
234: SSH_RSA_MINIMUM_MODULUS_SIZE);
235: break;
236: case KEY_ECDSA:
237: if (sshkey_ecdsa_bits_to_nid(*bitsp) == -1)
238: fatal("Invalid ECDSA key length: valid lengths are "
239: "256, 384 or 521 bits");
240: }
1.246 markus 241: #endif
1.206 stevesk 242: }
243:
244: static void
1.10 markus 245: ask_filename(struct passwd *pw, const char *prompt)
1.1 deraadt 246: {
1.12 markus 247: char buf[1024];
1.35 markus 248: char *name = NULL;
249:
1.92 stevesk 250: if (key_type_name == NULL)
1.40 markus 251: name = _PATH_SSH_CLIENT_ID_RSA;
1.140 deraadt 252: else {
1.252 djm 253: switch (sshkey_type_from_name(key_type_name)) {
1.186 djm 254: case KEY_DSA_CERT:
1.92 stevesk 255: case KEY_DSA:
256: name = _PATH_SSH_CLIENT_ID_DSA;
257: break;
1.200 djm 258: case KEY_ECDSA_CERT:
259: case KEY_ECDSA:
260: name = _PATH_SSH_CLIENT_ID_ECDSA;
261: break;
1.186 djm 262: case KEY_RSA_CERT:
1.92 stevesk 263: case KEY_RSA:
264: name = _PATH_SSH_CLIENT_ID_RSA;
265: break;
1.238 markus 266: case KEY_ED25519:
267: case KEY_ED25519_CERT:
268: name = _PATH_SSH_CLIENT_ID_ED25519;
269: break;
1.313 markus 270: case KEY_XMSS:
271: case KEY_XMSS_CERT:
272: name = _PATH_SSH_CLIENT_ID_XMSS;
273: break;
1.92 stevesk 274: default:
1.269 djm 275: fatal("bad key type");
1.92 stevesk 276: }
1.140 deraadt 277: }
1.269 djm 278: snprintf(identity_file, sizeof(identity_file),
279: "%s/%s", pw->pw_dir, name);
280: printf("%s (%s): ", prompt, identity_file);
281: fflush(stdout);
1.12 markus 282: if (fgets(buf, sizeof(buf), stdin) == NULL)
283: exit(1);
1.162 gilles 284: buf[strcspn(buf, "\n")] = '\0';
1.12 markus 285: if (strcmp(buf, "") != 0)
286: strlcpy(identity_file, buf, sizeof(identity_file));
287: have_identity = 1;
1.7 markus 288: }
289:
1.252 djm 290: static struct sshkey *
1.61 markus 291: load_identity(char *filename)
1.19 markus 292: {
1.52 markus 293: char *pass;
1.252 djm 294: struct sshkey *prv;
295: int r;
1.52 markus 296:
1.252 djm 297: if ((r = sshkey_load_private(filename, "", &prv, NULL)) == 0)
298: return prv;
299: if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
300: fatal("Load key \"%s\": %s", filename, ssh_err(r));
301: if (identity_passphrase)
302: pass = xstrdup(identity_passphrase);
303: else
304: pass = read_passphrase("Enter passphrase: ", RP_ALLOW_STDIN);
305: r = sshkey_load_private(filename, pass, &prv, NULL);
306: explicit_bzero(pass, strlen(pass));
307: free(pass);
308: if (r != 0)
309: fatal("Load key \"%s\": %s", filename, ssh_err(r));
1.52 markus 310: return prv;
1.19 markus 311: }
312:
1.32 markus 313: #define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
1.100 deraadt 314: #define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
1.32 markus 315: #define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
1.42 stevesk 316: #define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
1.19 markus 317:
1.246 markus 318: #ifdef WITH_OPENSSL
1.63 itojun 319: static void
1.252 djm 320: do_convert_to_ssh2(struct passwd *pw, struct sshkey *k)
1.19 markus 321: {
1.252 djm 322: size_t len;
1.36 markus 323: u_char *blob;
1.176 djm 324: char comment[61];
1.252 djm 325: int r;
1.19 markus 326:
1.269 djm 327: if ((r = sshkey_to_blob(k, &blob, &len)) != 0)
328: fatal("key_to_blob failed: %s", ssh_err(r));
1.176 djm 329: /* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
330: snprintf(comment, sizeof(comment),
331: "%u-bit %s, converted by %s@%s from OpenSSH",
1.252 djm 332: sshkey_size(k), sshkey_type(k),
1.19 markus 333: pw->pw_name, hostname);
1.176 djm 334:
335: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
336: fprintf(stdout, "Comment: \"%s\"\n", comment);
1.19 markus 337: dump_base64(stdout, blob, len);
1.32 markus 338: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
1.252 djm 339: sshkey_free(k);
1.227 djm 340: free(blob);
1.19 markus 341: exit(0);
342: }
343:
1.63 itojun 344: static void
1.252 djm 345: do_convert_to_pkcs8(struct sshkey *k)
1.193 djm 346: {
1.252 djm 347: switch (sshkey_type_plain(k->type)) {
1.193 djm 348: case KEY_RSA:
349: if (!PEM_write_RSA_PUBKEY(stdout, k->rsa))
350: fatal("PEM_write_RSA_PUBKEY failed");
351: break;
352: case KEY_DSA:
353: if (!PEM_write_DSA_PUBKEY(stdout, k->dsa))
354: fatal("PEM_write_DSA_PUBKEY failed");
355: break;
1.200 djm 356: case KEY_ECDSA:
357: if (!PEM_write_EC_PUBKEY(stdout, k->ecdsa))
358: fatal("PEM_write_EC_PUBKEY failed");
359: break;
1.193 djm 360: default:
1.252 djm 361: fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
1.193 djm 362: }
363: exit(0);
364: }
365:
366: static void
1.252 djm 367: do_convert_to_pem(struct sshkey *k)
1.193 djm 368: {
1.252 djm 369: switch (sshkey_type_plain(k->type)) {
1.193 djm 370: case KEY_RSA:
371: if (!PEM_write_RSAPublicKey(stdout, k->rsa))
372: fatal("PEM_write_RSAPublicKey failed");
373: break;
374: default:
1.252 djm 375: fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
1.193 djm 376: }
377: exit(0);
378: }
379:
380: static void
381: do_convert_to(struct passwd *pw)
382: {
1.252 djm 383: struct sshkey *k;
1.193 djm 384: struct stat st;
1.252 djm 385: int r;
1.193 djm 386:
387: if (!have_identity)
388: ask_filename(pw, "Enter file in which the key is");
389: if (stat(identity_file, &st) < 0)
390: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.252 djm 391: if ((r = sshkey_load_public(identity_file, &k, NULL)) != 0)
392: k = load_identity(identity_file);
1.193 djm 393: switch (convert_format) {
394: case FMT_RFC4716:
395: do_convert_to_ssh2(pw, k);
396: break;
397: case FMT_PKCS8:
398: do_convert_to_pkcs8(k);
399: break;
400: case FMT_PEM:
401: do_convert_to_pem(k);
402: break;
403: default:
404: fatal("%s: unknown key format %d", __func__, convert_format);
405: }
406: exit(0);
407: }
408:
1.252 djm 409: /*
410: * This is almost exactly the bignum1 encoding, but with 32 bit for length
411: * instead of 16.
412: */
1.193 djm 413: static void
1.252 djm 414: buffer_get_bignum_bits(struct sshbuf *b, BIGNUM *value)
1.32 markus 415: {
1.252 djm 416: u_int bytes, bignum_bits;
417: int r;
1.53 markus 418:
1.252 djm 419: if ((r = sshbuf_get_u32(b, &bignum_bits)) != 0)
420: fatal("%s: buffer error: %s", __func__, ssh_err(r));
421: bytes = (bignum_bits + 7) / 8;
422: if (sshbuf_len(b) < bytes)
423: fatal("%s: input buffer too small: need %d have %zu",
424: __func__, bytes, sshbuf_len(b));
425: if (BN_bin2bn(sshbuf_ptr(b), bytes, value) == NULL)
426: fatal("%s: BN_bin2bn failed", __func__);
427: if ((r = sshbuf_consume(b, bytes)) != 0)
428: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.32 markus 429: }
430:
1.252 djm 431: static struct sshkey *
1.93 markus 432: do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
1.32 markus 433: {
1.252 djm 434: struct sshbuf *b;
435: struct sshkey *key = NULL;
1.64 markus 436: char *type, *cipher;
1.252 djm 437: u_char e1, e2, e3, *sig = NULL, data[] = "abcde12345";
438: int r, rlen, ktype;
439: u_int magic, i1, i2, i3, i4;
440: size_t slen;
1.62 markus 441: u_long e;
1.321 djm 442: BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;
443: BIGNUM *dsa_pub_key = NULL, *dsa_priv_key = NULL;
444: BIGNUM *rsa_n = NULL, *rsa_e = NULL, *rsa_d = NULL;
445: BIGNUM *rsa_p = NULL, *rsa_q = NULL, *rsa_iqmp = NULL;
1.252 djm 446: if ((b = sshbuf_from(blob, blen)) == NULL)
447: fatal("%s: sshbuf_from failed", __func__);
448: if ((r = sshbuf_get_u32(b, &magic)) != 0)
449: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.32 markus 450:
451: if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
1.252 djm 452: error("bad magic 0x%x != 0x%x", magic,
453: SSH_COM_PRIVATE_KEY_MAGIC);
454: sshbuf_free(b);
1.32 markus 455: return NULL;
456: }
1.252 djm 457: if ((r = sshbuf_get_u32(b, &i1)) != 0 ||
458: (r = sshbuf_get_cstring(b, &type, NULL)) != 0 ||
459: (r = sshbuf_get_cstring(b, &cipher, NULL)) != 0 ||
460: (r = sshbuf_get_u32(b, &i2)) != 0 ||
461: (r = sshbuf_get_u32(b, &i3)) != 0 ||
462: (r = sshbuf_get_u32(b, &i4)) != 0)
463: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.158 stevesk 464: debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
1.32 markus 465: if (strcmp(cipher, "none") != 0) {
466: error("unsupported cipher %s", cipher);
1.227 djm 467: free(cipher);
1.252 djm 468: sshbuf_free(b);
1.227 djm 469: free(type);
1.32 markus 470: return NULL;
471: }
1.227 djm 472: free(cipher);
1.32 markus 473:
1.53 markus 474: if (strstr(type, "dsa")) {
475: ktype = KEY_DSA;
476: } else if (strstr(type, "rsa")) {
477: ktype = KEY_RSA;
478: } else {
1.252 djm 479: sshbuf_free(b);
1.227 djm 480: free(type);
1.32 markus 481: return NULL;
482: }
1.322 ! djm 483: if ((key = sshkey_new(ktype)) == NULL)
! 484: fatal("sshkey_new failed");
1.227 djm 485: free(type);
1.53 markus 486:
487: switch (key->type) {
488: case KEY_DSA:
1.321 djm 489: if ((dsa_p = BN_new()) == NULL ||
490: (dsa_q = BN_new()) == NULL ||
491: (dsa_g = BN_new()) == NULL ||
492: (dsa_pub_key = BN_new()) == NULL ||
493: (dsa_priv_key = BN_new()) == NULL)
494: fatal("%s: BN_new", __func__);
495: buffer_get_bignum_bits(b, dsa_p);
496: buffer_get_bignum_bits(b, dsa_g);
497: buffer_get_bignum_bits(b, dsa_q);
498: buffer_get_bignum_bits(b, dsa_pub_key);
499: buffer_get_bignum_bits(b, dsa_priv_key);
500: if (!DSA_set0_pqg(key->dsa, dsa_p, dsa_q, dsa_g))
501: fatal("%s: DSA_set0_pqg failed", __func__);
502: dsa_p = dsa_q = dsa_g = NULL; /* transferred */
503: if (!DSA_set0_key(key->dsa, dsa_pub_key, dsa_priv_key))
504: fatal("%s: DSA_set0_key failed", __func__);
505: dsa_pub_key = dsa_priv_key = NULL; /* transferred */
1.53 markus 506: break;
507: case KEY_RSA:
1.252 djm 508: if ((r = sshbuf_get_u8(b, &e1)) != 0 ||
509: (e1 < 30 && (r = sshbuf_get_u8(b, &e2)) != 0) ||
510: (e1 < 30 && (r = sshbuf_get_u8(b, &e3)) != 0))
511: fatal("%s: buffer error: %s", __func__, ssh_err(r));
512: e = e1;
1.62 markus 513: debug("e %lx", e);
514: if (e < 30) {
515: e <<= 8;
1.252 djm 516: e += e2;
1.62 markus 517: debug("e %lx", e);
518: e <<= 8;
1.252 djm 519: e += e3;
1.62 markus 520: debug("e %lx", e);
521: }
1.321 djm 522: if ((rsa_e = BN_new()) == NULL)
523: fatal("%s: BN_new", __func__);
524: if (!BN_set_word(rsa_e, e)) {
525: BN_clear_free(rsa_e);
1.252 djm 526: sshbuf_free(b);
527: sshkey_free(key);
1.53 markus 528: return NULL;
529: }
1.321 djm 530: if ((rsa_n = BN_new()) == NULL ||
531: (rsa_d = BN_new()) == NULL ||
532: (rsa_p = BN_new()) == NULL ||
533: (rsa_q = BN_new()) == NULL ||
534: (rsa_iqmp = BN_new()) == NULL)
535: fatal("%s: BN_new", __func__);
536: buffer_get_bignum_bits(b, rsa_d);
537: buffer_get_bignum_bits(b, rsa_n);
538: buffer_get_bignum_bits(b, rsa_iqmp);
539: buffer_get_bignum_bits(b, rsa_q);
540: buffer_get_bignum_bits(b, rsa_p);
541: if (!RSA_set0_key(key->rsa, rsa_n, rsa_e, rsa_d))
542: fatal("%s: RSA_set0_key failed", __func__);
543: rsa_n = rsa_e = rsa_d = NULL; /* transferred */
544: if (!RSA_set0_factors(key->rsa, rsa_p, rsa_q))
545: fatal("%s: RSA_set0_factors failed", __func__);
546: rsa_p = rsa_q = NULL; /* transferred */
547: if ((r = ssh_rsa_complete_crt_parameters(key, rsa_iqmp)) != 0)
1.252 djm 548: fatal("generate RSA parameters failed: %s", ssh_err(r));
1.321 djm 549: BN_clear_free(rsa_iqmp);
1.53 markus 550: break;
551: }
1.252 djm 552: rlen = sshbuf_len(b);
1.85 deraadt 553: if (rlen != 0)
1.53 markus 554: error("do_convert_private_ssh2_from_blob: "
555: "remaining bytes in key blob %d", rlen);
1.252 djm 556: sshbuf_free(b);
1.64 markus 557:
558: /* try the key */
1.285 markus 559: if (sshkey_sign(key, &sig, &slen, data, sizeof(data), NULL, 0) != 0 ||
1.309 djm 560: sshkey_verify(key, sig, slen, data, sizeof(data), NULL, 0) != 0) {
1.252 djm 561: sshkey_free(key);
562: free(sig);
563: return NULL;
564: }
1.227 djm 565: free(sig);
1.32 markus 566: return key;
567: }
568:
1.137 dtucker 569: static int
570: get_line(FILE *fp, char *line, size_t len)
571: {
572: int c;
573: size_t pos = 0;
574:
575: line[0] = '\0';
576: while ((c = fgetc(fp)) != EOF) {
1.269 djm 577: if (pos >= len - 1)
578: fatal("input line too long.");
1.140 deraadt 579: switch (c) {
1.137 dtucker 580: case '\r':
581: c = fgetc(fp);
1.269 djm 582: if (c != EOF && c != '\n' && ungetc(c, fp) == EOF)
583: fatal("unget: %s", strerror(errno));
1.137 dtucker 584: return pos;
585: case '\n':
586: return pos;
587: }
588: line[pos++] = c;
589: line[pos] = '\0';
590: }
1.157 stevesk 591: /* We reached EOF */
592: return -1;
1.137 dtucker 593: }
594:
1.63 itojun 595: static void
1.252 djm 596: do_convert_from_ssh2(struct passwd *pw, struct sshkey **k, int *private)
1.19 markus 597: {
1.252 djm 598: int r, blen, escaped = 0;
1.98 markus 599: u_int len;
1.137 dtucker 600: char line[1024];
1.80 stevesk 601: u_char blob[8096];
1.19 markus 602: char encoded[8096];
603: FILE *fp;
604:
1.191 djm 605: if ((fp = fopen(identity_file, "r")) == NULL)
606: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.19 markus 607: encoded[0] = '\0';
1.137 dtucker 608: while ((blen = get_line(fp, line, sizeof(line))) != -1) {
1.228 djm 609: if (blen > 0 && line[blen - 1] == '\\')
1.25 markus 610: escaped++;
1.19 markus 611: if (strncmp(line, "----", 4) == 0 ||
612: strstr(line, ": ") != NULL) {
1.32 markus 613: if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
1.193 djm 614: *private = 1;
1.64 markus 615: if (strstr(line, " END ") != NULL) {
616: break;
617: }
1.60 markus 618: /* fprintf(stderr, "ignore: %s", line); */
1.19 markus 619: continue;
620: }
1.25 markus 621: if (escaped) {
622: escaped--;
1.60 markus 623: /* fprintf(stderr, "escaped: %s", line); */
1.25 markus 624: continue;
1.19 markus 625: }
626: strlcat(encoded, line, sizeof(encoded));
627: }
1.98 markus 628: len = strlen(encoded);
629: if (((len % 4) == 3) &&
630: (encoded[len-1] == '=') &&
631: (encoded[len-2] == '=') &&
632: (encoded[len-3] == '='))
633: encoded[len-3] = '\0';
1.91 stevesk 634: blen = uudecode(encoded, blob, sizeof(blob));
1.269 djm 635: if (blen < 0)
636: fatal("uudecode failed.");
1.252 djm 637: if (*private)
638: *k = do_convert_private_ssh2_from_blob(blob, blen);
1.269 djm 639: else if ((r = sshkey_from_blob(blob, blen, k)) != 0)
640: fatal("decode blob failed: %s", ssh_err(r));
1.193 djm 641: fclose(fp);
642: }
643:
644: static void
1.252 djm 645: do_convert_from_pkcs8(struct sshkey **k, int *private)
1.193 djm 646: {
647: EVP_PKEY *pubkey;
648: FILE *fp;
649:
650: if ((fp = fopen(identity_file, "r")) == NULL)
651: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
652: if ((pubkey = PEM_read_PUBKEY(fp, NULL, NULL, NULL)) == NULL) {
653: fatal("%s: %s is not a recognised public key format", __func__,
654: identity_file);
655: }
656: fclose(fp);
1.321 djm 657: switch (EVP_PKEY_base_id(pubkey)) {
1.193 djm 658: case EVP_PKEY_RSA:
1.252 djm 659: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
660: fatal("sshkey_new failed");
1.193 djm 661: (*k)->type = KEY_RSA;
662: (*k)->rsa = EVP_PKEY_get1_RSA(pubkey);
663: break;
664: case EVP_PKEY_DSA:
1.252 djm 665: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
666: fatal("sshkey_new failed");
1.193 djm 667: (*k)->type = KEY_DSA;
668: (*k)->dsa = EVP_PKEY_get1_DSA(pubkey);
669: break;
1.200 djm 670: case EVP_PKEY_EC:
1.252 djm 671: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
672: fatal("sshkey_new failed");
1.200 djm 673: (*k)->type = KEY_ECDSA;
674: (*k)->ecdsa = EVP_PKEY_get1_EC_KEY(pubkey);
1.252 djm 675: (*k)->ecdsa_nid = sshkey_ecdsa_key_to_nid((*k)->ecdsa);
1.200 djm 676: break;
1.193 djm 677: default:
678: fatal("%s: unsupported pubkey type %d", __func__,
1.321 djm 679: EVP_PKEY_base_id(pubkey));
1.193 djm 680: }
681: EVP_PKEY_free(pubkey);
682: return;
683: }
684:
685: static void
1.252 djm 686: do_convert_from_pem(struct sshkey **k, int *private)
1.193 djm 687: {
688: FILE *fp;
689: RSA *rsa;
690:
691: if ((fp = fopen(identity_file, "r")) == NULL)
692: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
693: if ((rsa = PEM_read_RSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
1.252 djm 694: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
695: fatal("sshkey_new failed");
1.193 djm 696: (*k)->type = KEY_RSA;
697: (*k)->rsa = rsa;
698: fclose(fp);
699: return;
700: }
701: fatal("%s: unrecognised raw private key format", __func__);
702: }
703:
704: static void
705: do_convert_from(struct passwd *pw)
706: {
1.252 djm 707: struct sshkey *k = NULL;
708: int r, private = 0, ok = 0;
1.193 djm 709: struct stat st;
710:
711: if (!have_identity)
712: ask_filename(pw, "Enter file in which the key is");
713: if (stat(identity_file, &st) < 0)
714: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
715:
716: switch (convert_format) {
717: case FMT_RFC4716:
718: do_convert_from_ssh2(pw, &k, &private);
719: break;
720: case FMT_PKCS8:
721: do_convert_from_pkcs8(&k, &private);
722: break;
723: case FMT_PEM:
724: do_convert_from_pem(&k, &private);
725: break;
726: default:
727: fatal("%s: unknown key format %d", __func__, convert_format);
728: }
729:
1.260 djm 730: if (!private) {
1.252 djm 731: if ((r = sshkey_write(k, stdout)) == 0)
732: ok = 1;
1.193 djm 733: if (ok)
734: fprintf(stdout, "\n");
1.260 djm 735: } else {
1.193 djm 736: switch (k->type) {
737: case KEY_DSA:
738: ok = PEM_write_DSAPrivateKey(stdout, k->dsa, NULL,
739: NULL, 0, NULL, NULL);
740: break;
1.200 djm 741: case KEY_ECDSA:
742: ok = PEM_write_ECPrivateKey(stdout, k->ecdsa, NULL,
743: NULL, 0, NULL, NULL);
744: break;
1.193 djm 745: case KEY_RSA:
746: ok = PEM_write_RSAPrivateKey(stdout, k->rsa, NULL,
747: NULL, 0, NULL, NULL);
748: break;
749: default:
750: fatal("%s: unsupported key type %s", __func__,
1.252 djm 751: sshkey_type(k));
1.193 djm 752: }
753: }
754:
1.269 djm 755: if (!ok)
756: fatal("key write failed");
1.252 djm 757: sshkey_free(k);
1.19 markus 758: exit(0);
759: }
1.246 markus 760: #endif
1.19 markus 761:
1.63 itojun 762: static void
1.19 markus 763: do_print_public(struct passwd *pw)
764: {
1.252 djm 765: struct sshkey *prv;
1.19 markus 766: struct stat st;
1.252 djm 767: int r;
1.19 markus 768:
769: if (!have_identity)
770: ask_filename(pw, "Enter file in which the key is");
1.269 djm 771: if (stat(identity_file, &st) < 0)
772: fatal("%s: %s", identity_file, strerror(errno));
1.61 markus 773: prv = load_identity(identity_file);
1.252 djm 774: if ((r = sshkey_write(prv, stdout)) != 0)
1.304 markus 775: error("sshkey_write failed: %s", ssh_err(r));
1.252 djm 776: sshkey_free(prv);
1.19 markus 777: fprintf(stdout, "\n");
778: exit(0);
779: }
780:
1.66 markus 781: static void
1.197 djm 782: do_download(struct passwd *pw)
1.75 markus 783: {
1.177 markus 784: #ifdef ENABLE_PKCS11
1.252 djm 785: struct sshkey **keys = NULL;
1.177 markus 786: int i, nkeys;
1.252 djm 787: enum sshkey_fp_rep rep;
1.251 djm 788: int fptype;
1.221 djm 789: char *fp, *ra;
1.222 djm 790:
1.251 djm 791: fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
792: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
1.75 markus 793:
1.177 markus 794: pkcs11_init(0);
795: nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys);
796: if (nkeys <= 0)
797: fatal("cannot read public key from pkcs11");
798: for (i = 0; i < nkeys; i++) {
1.221 djm 799: if (print_fingerprint) {
1.252 djm 800: fp = sshkey_fingerprint(keys[i], fptype, rep);
801: ra = sshkey_fingerprint(keys[i], fingerprint_hash,
1.221 djm 802: SSH_FP_RANDOMART);
1.259 djm 803: if (fp == NULL || ra == NULL)
804: fatal("%s: sshkey_fingerprint fail", __func__);
1.252 djm 805: printf("%u %s %s (PKCS11 key)\n", sshkey_size(keys[i]),
806: fp, sshkey_type(keys[i]));
1.221 djm 807: if (log_level >= SYSLOG_LEVEL_VERBOSE)
808: printf("%s\n", ra);
1.227 djm 809: free(ra);
810: free(fp);
1.221 djm 811: } else {
1.252 djm 812: (void) sshkey_write(keys[i], stdout); /* XXX check */
1.221 djm 813: fprintf(stdout, "\n");
814: }
1.252 djm 815: sshkey_free(keys[i]);
1.97 markus 816: }
1.227 djm 817: free(keys);
1.177 markus 818: pkcs11_terminate();
1.75 markus 819: exit(0);
1.177 markus 820: #else
821: fatal("no pkcs11 support");
822: #endif /* ENABLE_PKCS11 */
1.75 markus 823: }
1.66 markus 824:
1.279 djm 825: static struct sshkey *
826: try_read_key(char **cpp)
827: {
828: struct sshkey *ret;
829: int r;
830:
831: if ((ret = sshkey_new(KEY_UNSPEC)) == NULL)
832: fatal("sshkey_new failed");
833: if ((r = sshkey_read(ret, cpp)) == 0)
834: return ret;
835: /* Not a key */
836: sshkey_free(ret);
837: return NULL;
838: }
839:
1.63 itojun 840: static void
1.279 djm 841: fingerprint_one_key(const struct sshkey *public, const char *comment)
1.8 markus 842: {
1.279 djm 843: char *fp = NULL, *ra = NULL;
1.252 djm 844: enum sshkey_fp_rep rep;
1.251 djm 845: int fptype;
1.12 markus 846:
1.251 djm 847: fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
848: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
1.279 djm 849: fp = sshkey_fingerprint(public, fptype, rep);
850: ra = sshkey_fingerprint(public, fingerprint_hash, SSH_FP_RANDOMART);
851: if (fp == NULL || ra == NULL)
852: fatal("%s: sshkey_fingerprint failed", __func__);
1.294 djm 853: mprintf("%u %s %s (%s)\n", sshkey_size(public), fp,
1.279 djm 854: comment ? comment : "no comment", sshkey_type(public));
855: if (log_level >= SYSLOG_LEVEL_VERBOSE)
856: printf("%s\n", ra);
857: free(ra);
858: free(fp);
859: }
860:
861: static void
862: fingerprint_private(const char *path)
863: {
864: struct stat st;
865: char *comment = NULL;
866: struct sshkey *public = NULL;
867: int r;
868:
869: if (stat(identity_file, &st) < 0)
870: fatal("%s: %s", path, strerror(errno));
1.280 djm 871: if ((r = sshkey_load_public(path, &public, &comment)) != 0) {
872: debug("load public \"%s\": %s", path, ssh_err(r));
873: if ((r = sshkey_load_private(path, NULL,
874: &public, &comment)) != 0) {
875: debug("load private \"%s\": %s", path, ssh_err(r));
876: fatal("%s is not a key file.", path);
877: }
878: }
879:
1.279 djm 880: fingerprint_one_key(public, comment);
881: sshkey_free(public);
882: free(comment);
883: }
884:
885: static void
886: do_fingerprint(struct passwd *pw)
887: {
888: FILE *f;
889: struct sshkey *public = NULL;
1.317 markus 890: char *comment = NULL, *cp, *ep, *line = NULL;
891: size_t linesize = 0;
1.279 djm 892: int i, invalid = 1;
893: const char *path;
1.289 djm 894: u_long lnum = 0;
1.279 djm 895:
1.12 markus 896: if (!have_identity)
897: ask_filename(pw, "Enter file in which the key is");
1.279 djm 898: path = identity_file;
1.15 markus 899:
1.279 djm 900: if (strcmp(identity_file, "-") == 0) {
901: f = stdin;
902: path = "(stdin)";
903: } else if ((f = fopen(path, "r")) == NULL)
904: fatal("%s: %s: %s", __progname, path, strerror(errno));
905:
1.317 markus 906: while (getline(&line, &linesize, f) != -1) {
907: lnum++;
1.279 djm 908: cp = line;
909: cp[strcspn(cp, "\n")] = '\0';
910: /* Trim leading space and comments */
911: cp = line + strspn(line, " \t");
912: if (*cp == '#' || *cp == '\0')
913: continue;
1.191 djm 914:
1.279 djm 915: /*
916: * Input may be plain keys, private keys, authorized_keys
917: * or known_hosts.
918: */
919:
920: /*
921: * Try private keys first. Assume a key is private if
922: * "SSH PRIVATE KEY" appears on the first line and we're
923: * not reading from stdin (XXX support private keys on stdin).
924: */
925: if (lnum == 1 && strcmp(identity_file, "-") != 0 &&
1.280 djm 926: strstr(cp, "PRIVATE KEY") != NULL) {
1.317 markus 927: free(line);
1.279 djm 928: fclose(f);
929: fingerprint_private(path);
930: exit(0);
931: }
932:
933: /*
934: * If it's not a private key, then this must be prepared to
935: * accept a public key prefixed with a hostname or options.
936: * Try a bare key first, otherwise skip the leading stuff.
937: */
938: if ((public = try_read_key(&cp)) == NULL) {
939: i = strtol(cp, &ep, 10);
940: if (i == 0 || ep == NULL ||
941: (*ep != ' ' && *ep != '\t')) {
942: int quoted = 0;
943:
944: comment = cp;
945: for (; *cp && (quoted || (*cp != ' ' &&
946: *cp != '\t')); cp++) {
947: if (*cp == '\\' && cp[1] == '"')
948: cp++; /* Skip both */
949: else if (*cp == '"')
950: quoted = !quoted;
951: }
952: if (!*cp)
953: continue;
954: *cp++ = '\0';
955: }
1.191 djm 956: }
1.279 djm 957: /* Retry after parsing leading hostname/key options */
958: if (public == NULL && (public = try_read_key(&cp)) == NULL) {
1.289 djm 959: debug("%s:%lu: not a public key", path, lnum);
1.191 djm 960: continue;
961: }
962:
1.279 djm 963: /* Find trailing comment, if any */
964: for (; *cp == ' ' || *cp == '\t'; cp++)
1.191 djm 965: ;
1.279 djm 966: if (*cp != '\0' && *cp != '#')
1.191 djm 967: comment = cp;
1.279 djm 968:
969: fingerprint_one_key(public, comment);
1.252 djm 970: sshkey_free(public);
1.279 djm 971: invalid = 0; /* One good key in the file is sufficient */
1.15 markus 972: }
1.191 djm 973: fclose(f);
1.317 markus 974: free(line);
1.191 djm 975:
1.269 djm 976: if (invalid)
1.279 djm 977: fatal("%s is not a public key file.", path);
1.12 markus 978: exit(0);
1.8 markus 979: }
980:
1.119 djm 981: static void
1.206 stevesk 982: do_gen_all_hostkeys(struct passwd *pw)
983: {
984: struct {
985: char *key_type;
986: char *key_type_display;
987: char *path;
988: } key_types[] = {
1.267 djm 989: #ifdef WITH_OPENSSL
1.206 stevesk 990: { "rsa", "RSA" ,_PATH_HOST_RSA_KEY_FILE },
991: { "dsa", "DSA", _PATH_HOST_DSA_KEY_FILE },
992: { "ecdsa", "ECDSA",_PATH_HOST_ECDSA_KEY_FILE },
1.267 djm 993: #endif /* WITH_OPENSSL */
1.238 markus 994: { "ed25519", "ED25519",_PATH_HOST_ED25519_KEY_FILE },
1.313 markus 995: #ifdef WITH_XMSS
996: { "xmss", "XMSS",_PATH_HOST_XMSS_KEY_FILE },
997: #endif /* WITH_XMSS */
1.206 stevesk 998: { NULL, NULL, NULL }
999: };
1000:
1001: int first = 0;
1002: struct stat st;
1.252 djm 1003: struct sshkey *private, *public;
1.307 djm 1004: char comment[1024], *prv_tmp, *pub_tmp, *prv_file, *pub_file;
1.252 djm 1005: int i, type, fd, r;
1.206 stevesk 1006: FILE *f;
1007:
1008: for (i = 0; key_types[i].key_type; i++) {
1.307 djm 1009: public = private = NULL;
1010: prv_tmp = pub_tmp = prv_file = pub_file = NULL;
1011:
1012: xasprintf(&prv_file, "%s%s",
1013: identity_file, key_types[i].path);
1014:
1015: /* Check whether private key exists and is not zero-length */
1016: if (stat(prv_file, &st) == 0) {
1017: if (st.st_size != 0)
1018: goto next;
1019: } else if (errno != ENOENT) {
1.269 djm 1020: error("Could not stat %s: %s", key_types[i].path,
1.206 stevesk 1021: strerror(errno));
1.307 djm 1022: goto failnext;
1.206 stevesk 1023: }
1024:
1.307 djm 1025: /*
1026: * Private key doesn't exist or is invalid; proceed with
1027: * key generation.
1028: */
1029: xasprintf(&prv_tmp, "%s%s.XXXXXXXXXX",
1030: identity_file, key_types[i].path);
1031: xasprintf(&pub_tmp, "%s%s.pub.XXXXXXXXXX",
1032: identity_file, key_types[i].path);
1033: xasprintf(&pub_file, "%s%s.pub",
1034: identity_file, key_types[i].path);
1035:
1.206 stevesk 1036: if (first == 0) {
1037: first = 1;
1038: printf("%s: generating new host keys: ", __progname);
1039: }
1040: printf("%s ", key_types[i].key_type_display);
1041: fflush(stdout);
1.252 djm 1042: type = sshkey_type_from_name(key_types[i].key_type);
1.307 djm 1043: if ((fd = mkstemp(prv_tmp)) == -1) {
1044: error("Could not save your public key in %s: %s",
1045: prv_tmp, strerror(errno));
1046: goto failnext;
1047: }
1048: close(fd); /* just using mkstemp() to generate/reserve a name */
1.206 stevesk 1049: bits = 0;
1.255 djm 1050: type_bits_valid(type, NULL, &bits);
1.252 djm 1051: if ((r = sshkey_generate(type, bits, &private)) != 0) {
1.304 markus 1052: error("sshkey_generate failed: %s", ssh_err(r));
1.307 djm 1053: goto failnext;
1.206 stevesk 1054: }
1.252 djm 1055: if ((r = sshkey_from_private(private, &public)) != 0)
1056: fatal("sshkey_from_private failed: %s", ssh_err(r));
1.206 stevesk 1057: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name,
1058: hostname);
1.307 djm 1059: if ((r = sshkey_save_private(private, prv_tmp, "",
1.252 djm 1060: comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 1061: error("Saving key \"%s\" failed: %s",
1.307 djm 1062: prv_tmp, ssh_err(r));
1063: goto failnext;
1.206 stevesk 1064: }
1.307 djm 1065: if ((fd = mkstemp(pub_tmp)) == -1) {
1066: error("Could not save your public key in %s: %s",
1067: pub_tmp, strerror(errno));
1068: goto failnext;
1.206 stevesk 1069: }
1.307 djm 1070: (void)fchmod(fd, 0644);
1.206 stevesk 1071: f = fdopen(fd, "w");
1072: if (f == NULL) {
1.307 djm 1073: error("fdopen %s failed: %s", pub_tmp, strerror(errno));
1.250 doug 1074: close(fd);
1.307 djm 1075: goto failnext;
1.206 stevesk 1076: }
1.254 djm 1077: if ((r = sshkey_write(public, f)) != 0) {
1.269 djm 1078: error("write key failed: %s", ssh_err(r));
1.250 doug 1079: fclose(f);
1.307 djm 1080: goto failnext;
1081: }
1082: fprintf(f, " %s\n", comment);
1083: if (ferror(f) != 0) {
1084: error("write key failed: %s", strerror(errno));
1085: fclose(f);
1086: goto failnext;
1087: }
1088: if (fclose(f) != 0) {
1089: error("key close failed: %s", strerror(errno));
1090: goto failnext;
1091: }
1092:
1093: /* Rename temporary files to their permanent locations. */
1094: if (rename(pub_tmp, pub_file) != 0) {
1095: error("Unable to move %s into position: %s",
1096: pub_file, strerror(errno));
1097: goto failnext;
1098: }
1099: if (rename(prv_tmp, prv_file) != 0) {
1100: error("Unable to move %s into position: %s",
1101: key_types[i].path, strerror(errno));
1102: failnext:
1.206 stevesk 1103: first = 0;
1.307 djm 1104: goto next;
1.206 stevesk 1105: }
1.307 djm 1106: next:
1107: sshkey_free(private);
1.252 djm 1108: sshkey_free(public);
1.307 djm 1109: free(prv_tmp);
1110: free(pub_tmp);
1111: free(prv_file);
1112: free(pub_file);
1.206 stevesk 1113: }
1114: if (first != 0)
1115: printf("\n");
1116: }
1117:
1.256 djm 1118: struct known_hosts_ctx {
1.257 djm 1119: const char *host; /* Hostname searched for in find/delete case */
1120: FILE *out; /* Output file, stdout for find_hosts case */
1121: int has_unhashed; /* When hashing, original had unhashed hosts */
1122: int found_key; /* For find/delete, host was found */
1123: int invalid; /* File contained invalid items; don't delete */
1.256 djm 1124: };
1125:
1126: static int
1127: known_hosts_hash(struct hostkey_foreach_line *l, void *_ctx)
1.119 djm 1128: {
1.256 djm 1129: struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
1130: char *hashed, *cp, *hosts, *ohosts;
1131: int has_wild = l->hosts && strcspn(l->hosts, "*?!") != strlen(l->hosts);
1.298 dtucker 1132: int was_hashed = l->hosts && l->hosts[0] == HASH_DELIM;
1.256 djm 1133:
1.262 djm 1134: switch (l->status) {
1135: case HKF_STATUS_OK:
1136: case HKF_STATUS_MATCHED:
1137: /*
1138: * Don't hash hosts already already hashed, with wildcard
1139: * characters or a CA/revocation marker.
1140: */
1.296 djm 1141: if (was_hashed || has_wild || l->marker != MRK_NONE) {
1.262 djm 1142: fprintf(ctx->out, "%s\n", l->line);
1143: if (has_wild && !find_host) {
1.297 dtucker 1144: logit("%s:%lu: ignoring host name "
1.269 djm 1145: "with wildcard: %.64s", l->path,
1.262 djm 1146: l->linenum, l->hosts);
1147: }
1148: return 0;
1149: }
1150: /*
1151: * Split any comma-separated hostnames from the host list,
1152: * hash and store separately.
1153: */
1154: ohosts = hosts = xstrdup(l->hosts);
1155: while ((cp = strsep(&hosts, ",")) != NULL && *cp != '\0') {
1.299 djm 1156: lowercase(cp);
1.262 djm 1157: if ((hashed = host_hash(cp, NULL, 0)) == NULL)
1158: fatal("hash_host failed");
1159: fprintf(ctx->out, "%s %s\n", hashed, l->rawkey);
1160: ctx->has_unhashed = 1;
1161: }
1162: free(ohosts);
1163: return 0;
1164: case HKF_STATUS_INVALID:
1165: /* Retain invalid lines, but mark file as invalid. */
1.256 djm 1166: ctx->invalid = 1;
1.297 dtucker 1167: logit("%s:%lu: invalid line", l->path, l->linenum);
1.262 djm 1168: /* FALLTHROUGH */
1169: default:
1.256 djm 1170: fprintf(ctx->out, "%s\n", l->line);
1171: return 0;
1172: }
1.262 djm 1173: /* NOTREACHED */
1174: return -1;
1.256 djm 1175: }
1176:
1177: static int
1178: known_hosts_find_delete(struct hostkey_foreach_line *l, void *_ctx)
1179: {
1180: struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
1.272 djm 1181: enum sshkey_fp_rep rep;
1182: int fptype;
1183: char *fp;
1184:
1185: fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
1186: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
1.256 djm 1187:
1.262 djm 1188: if (l->status == HKF_STATUS_MATCHED) {
1.256 djm 1189: if (delete_host) {
1190: if (l->marker != MRK_NONE) {
1191: /* Don't remove CA and revocation lines */
1192: fprintf(ctx->out, "%s\n", l->line);
1193: } else {
1194: /*
1195: * Hostname matches and has no CA/revoke
1196: * marker, delete it by *not* writing the
1197: * line to ctx->out.
1198: */
1199: ctx->found_key = 1;
1200: if (!quiet)
1.297 dtucker 1201: printf("# Host %s found: line %lu\n",
1.256 djm 1202: ctx->host, l->linenum);
1203: }
1204: return 0;
1205: } else if (find_host) {
1206: ctx->found_key = 1;
1207: if (!quiet) {
1.297 dtucker 1208: printf("# Host %s found: line %lu %s\n",
1.256 djm 1209: ctx->host,
1210: l->linenum, l->marker == MRK_CA ? "CA" :
1211: (l->marker == MRK_REVOKE ? "REVOKED" : ""));
1212: }
1213: if (hash_hosts)
1214: known_hosts_hash(l, ctx);
1.272 djm 1215: else if (print_fingerprint) {
1216: fp = sshkey_fingerprint(l->key, fptype, rep);
1.294 djm 1217: mprintf("%s %s %s %s\n", ctx->host,
1.272 djm 1218: sshkey_type(l->key), fp, l->comment);
1219: free(fp);
1220: } else
1.256 djm 1221: fprintf(ctx->out, "%s\n", l->line);
1222: return 0;
1223: }
1224: } else if (delete_host) {
1225: /* Retain non-matching hosts when deleting */
1226: if (l->status == HKF_STATUS_INVALID) {
1227: ctx->invalid = 1;
1.297 dtucker 1228: logit("%s:%lu: invalid line", l->path, l->linenum);
1.256 djm 1229: }
1230: fprintf(ctx->out, "%s\n", l->line);
1.166 djm 1231: }
1.256 djm 1232: return 0;
1.119 djm 1233: }
1234:
1235: static void
1236: do_known_hosts(struct passwd *pw, const char *name)
1237: {
1.258 deraadt 1238: char *cp, tmp[PATH_MAX], old[PATH_MAX];
1.257 djm 1239: int r, fd, oerrno, inplace = 0;
1.256 djm 1240: struct known_hosts_ctx ctx;
1.272 djm 1241: u_int foreach_options;
1.119 djm 1242:
1243: if (!have_identity) {
1244: cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
1245: if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
1246: sizeof(identity_file))
1247: fatal("Specified known hosts path too long");
1.227 djm 1248: free(cp);
1.119 djm 1249: have_identity = 1;
1250: }
1251:
1.256 djm 1252: memset(&ctx, 0, sizeof(ctx));
1253: ctx.out = stdout;
1254: ctx.host = name;
1255:
1.119 djm 1256: /*
1257: * Find hosts goes to stdout, hash and deletions happen in-place
1258: * A corner case is ssh-keygen -HF foo, which should go to stdout
1259: */
1260: if (!find_host && (hash_hosts || delete_host)) {
1261: if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
1262: strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
1263: strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
1264: strlcat(old, ".old", sizeof(old)) >= sizeof(old))
1265: fatal("known_hosts path too long");
1266: umask(077);
1.256 djm 1267: if ((fd = mkstemp(tmp)) == -1)
1.119 djm 1268: fatal("mkstemp: %s", strerror(errno));
1.256 djm 1269: if ((ctx.out = fdopen(fd, "w")) == NULL) {
1270: oerrno = errno;
1.119 djm 1271: unlink(tmp);
1.256 djm 1272: fatal("fdopen: %s", strerror(oerrno));
1.119 djm 1273: }
1.257 djm 1274: inplace = 1;
1.119 djm 1275: }
1.256 djm 1276: /* XXX support identity_file == "-" for stdin */
1.272 djm 1277: foreach_options = find_host ? HKF_WANT_MATCH : 0;
1278: foreach_options |= print_fingerprint ? HKF_WANT_PARSE_KEY : 0;
1.316 djm 1279: if ((r = hostkeys_foreach(identity_file, (find_host || !hash_hosts) ?
1.315 djm 1280: known_hosts_find_delete : known_hosts_hash, &ctx, name, NULL,
1281: foreach_options)) != 0) {
1.284 deraadt 1282: if (inplace)
1283: unlink(tmp);
1.256 djm 1284: fatal("%s: hostkeys_foreach failed: %s", __func__, ssh_err(r));
1.284 deraadt 1285: }
1.119 djm 1286:
1.257 djm 1287: if (inplace)
1.256 djm 1288: fclose(ctx.out);
1.119 djm 1289:
1.256 djm 1290: if (ctx.invalid) {
1.269 djm 1291: error("%s is not a valid known_hosts file.", identity_file);
1.257 djm 1292: if (inplace) {
1.269 djm 1293: error("Not replacing existing known_hosts "
1294: "file because of errors");
1.119 djm 1295: unlink(tmp);
1296: }
1297: exit(1);
1.256 djm 1298: } else if (delete_host && !ctx.found_key) {
1.269 djm 1299: logit("Host %s not found in %s", name, identity_file);
1.277 djm 1300: if (inplace)
1301: unlink(tmp);
1.257 djm 1302: } else if (inplace) {
1.119 djm 1303: /* Backup existing file */
1304: if (unlink(old) == -1 && errno != ENOENT)
1305: fatal("unlink %.100s: %s", old, strerror(errno));
1306: if (link(identity_file, old) == -1)
1307: fatal("link %.100s to %.100s: %s", identity_file, old,
1308: strerror(errno));
1309: /* Move new one into place */
1310: if (rename(tmp, identity_file) == -1) {
1311: error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
1312: strerror(errno));
1313: unlink(tmp);
1314: unlink(old);
1315: exit(1);
1316: }
1317:
1.269 djm 1318: printf("%s updated.\n", identity_file);
1319: printf("Original contents retained as %s\n", old);
1.256 djm 1320: if (ctx.has_unhashed) {
1.269 djm 1321: logit("WARNING: %s contains unhashed entries", old);
1322: logit("Delete this file to ensure privacy "
1323: "of hostnames");
1.119 djm 1324: }
1325: }
1326:
1.256 djm 1327: exit (find_host && !ctx.found_key);
1.119 djm 1328: }
1329:
1.13 deraadt 1330: /*
1331: * Perform changing a passphrase. The argument is the passwd structure
1332: * for the current user.
1333: */
1.63 itojun 1334: static void
1.7 markus 1335: do_change_passphrase(struct passwd *pw)
1336: {
1.12 markus 1337: char *comment;
1338: char *old_passphrase, *passphrase1, *passphrase2;
1339: struct stat st;
1.252 djm 1340: struct sshkey *private;
1341: int r;
1.12 markus 1342:
1343: if (!have_identity)
1344: ask_filename(pw, "Enter file in which the key is");
1.269 djm 1345: if (stat(identity_file, &st) < 0)
1346: fatal("%s: %s", identity_file, strerror(errno));
1.12 markus 1347: /* Try to load the file with empty passphrase. */
1.252 djm 1348: r = sshkey_load_private(identity_file, "", &private, &comment);
1349: if (r == SSH_ERR_KEY_WRONG_PASSPHRASE) {
1.12 markus 1350: if (identity_passphrase)
1351: old_passphrase = xstrdup(identity_passphrase);
1352: else
1.65 markus 1353: old_passphrase =
1354: read_passphrase("Enter old passphrase: ",
1355: RP_ALLOW_STDIN);
1.252 djm 1356: r = sshkey_load_private(identity_file, old_passphrase,
1357: &private, &comment);
1.240 djm 1358: explicit_bzero(old_passphrase, strlen(old_passphrase));
1.227 djm 1359: free(old_passphrase);
1.252 djm 1360: if (r != 0)
1361: goto badkey;
1362: } else if (r != 0) {
1363: badkey:
1.269 djm 1364: fatal("Failed to load key %s: %s", identity_file, ssh_err(r));
1.12 markus 1365: }
1.266 djm 1366: if (comment)
1.294 djm 1367: mprintf("Key has comment '%s'\n", comment);
1.12 markus 1368:
1369: /* Ask the new passphrase (twice). */
1370: if (identity_new_passphrase) {
1371: passphrase1 = xstrdup(identity_new_passphrase);
1372: passphrase2 = NULL;
1373: } else {
1374: passphrase1 =
1.65 markus 1375: read_passphrase("Enter new passphrase (empty for no "
1376: "passphrase): ", RP_ALLOW_STDIN);
1377: passphrase2 = read_passphrase("Enter same passphrase again: ",
1.86 deraadt 1378: RP_ALLOW_STDIN);
1.12 markus 1379:
1380: /* Verify that they are the same. */
1381: if (strcmp(passphrase1, passphrase2) != 0) {
1.240 djm 1382: explicit_bzero(passphrase1, strlen(passphrase1));
1383: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 1384: free(passphrase1);
1385: free(passphrase2);
1.12 markus 1386: printf("Pass phrases do not match. Try again.\n");
1387: exit(1);
1388: }
1389: /* Destroy the other copy. */
1.240 djm 1390: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 1391: free(passphrase2);
1.12 markus 1392: }
1393:
1394: /* Save the file using the new passphrase. */
1.252 djm 1395: if ((r = sshkey_save_private(private, identity_file, passphrase1,
1396: comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 1397: error("Saving key \"%s\" failed: %s.",
1.252 djm 1398: identity_file, ssh_err(r));
1.240 djm 1399: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 1400: free(passphrase1);
1.252 djm 1401: sshkey_free(private);
1.227 djm 1402: free(comment);
1.12 markus 1403: exit(1);
1404: }
1405: /* Destroy the passphrase and the copy of the key in memory. */
1.240 djm 1406: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 1407: free(passphrase1);
1.252 djm 1408: sshkey_free(private); /* Destroys contents */
1.227 djm 1409: free(comment);
1.1 deraadt 1410:
1.12 markus 1411: printf("Your identification has been saved with the new passphrase.\n");
1412: exit(0);
1.1 deraadt 1413: }
1414:
1.105 jakob 1415: /*
1416: * Print the SSHFP RR.
1417: */
1.138 jakob 1418: static int
1419: do_print_resource_record(struct passwd *pw, char *fname, char *hname)
1.105 jakob 1420: {
1.252 djm 1421: struct sshkey *public;
1.105 jakob 1422: char *comment = NULL;
1423: struct stat st;
1.252 djm 1424: int r;
1.105 jakob 1425:
1.138 jakob 1426: if (fname == NULL)
1.229 djm 1427: fatal("%s: no filename", __func__);
1.138 jakob 1428: if (stat(fname, &st) < 0) {
1429: if (errno == ENOENT)
1430: return 0;
1.269 djm 1431: fatal("%s: %s", fname, strerror(errno));
1.105 jakob 1432: }
1.269 djm 1433: if ((r = sshkey_load_public(fname, &public, &comment)) != 0)
1434: fatal("Failed to read v2 public key from \"%s\": %s.",
1.252 djm 1435: fname, ssh_err(r));
1436: export_dns_rr(hname, public, stdout, print_generic);
1437: sshkey_free(public);
1438: free(comment);
1439: return 1;
1.105 jakob 1440: }
1441:
1.13 deraadt 1442: /*
1443: * Change the comment of a private key file.
1444: */
1.63 itojun 1445: static void
1.2 provos 1446: do_change_comment(struct passwd *pw)
1.1 deraadt 1447: {
1.46 deraadt 1448: char new_comment[1024], *comment, *passphrase;
1.252 djm 1449: struct sshkey *private;
1450: struct sshkey *public;
1.12 markus 1451: struct stat st;
1452: FILE *f;
1.252 djm 1453: int r, fd;
1.12 markus 1454:
1455: if (!have_identity)
1456: ask_filename(pw, "Enter file in which the key is");
1.269 djm 1457: if (stat(identity_file, &st) < 0)
1458: fatal("%s: %s", identity_file, strerror(errno));
1.252 djm 1459: if ((r = sshkey_load_private(identity_file, "",
1460: &private, &comment)) == 0)
1461: passphrase = xstrdup("");
1.269 djm 1462: else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
1463: fatal("Cannot load private key \"%s\": %s.",
1.252 djm 1464: identity_file, ssh_err(r));
1.269 djm 1465: else {
1.12 markus 1466: if (identity_passphrase)
1467: passphrase = xstrdup(identity_passphrase);
1468: else if (identity_new_passphrase)
1469: passphrase = xstrdup(identity_new_passphrase);
1470: else
1.65 markus 1471: passphrase = read_passphrase("Enter passphrase: ",
1472: RP_ALLOW_STDIN);
1.12 markus 1473: /* Try to load using the passphrase. */
1.252 djm 1474: if ((r = sshkey_load_private(identity_file, passphrase,
1475: &private, &comment)) != 0) {
1.240 djm 1476: explicit_bzero(passphrase, strlen(passphrase));
1.227 djm 1477: free(passphrase);
1.269 djm 1478: fatal("Cannot load private key \"%s\": %s.",
1.252 djm 1479: identity_file, ssh_err(r));
1.12 markus 1480: }
1481: }
1.283 halex 1482:
1.313 markus 1483: if (private->type != KEY_ED25519 && private->type != KEY_XMSS &&
1484: !use_new_format) {
1.302 djm 1485: error("Comments are only supported for keys stored in "
1.283 halex 1486: "the new format (-o).");
1.268 tobias 1487: explicit_bzero(passphrase, strlen(passphrase));
1.252 djm 1488: sshkey_free(private);
1.52 markus 1489: exit(1);
1.86 deraadt 1490: }
1.293 millert 1491: if (comment)
1492: printf("Key now has comment '%s'\n", comment);
1493: else
1494: printf("Key now has no comment\n");
1.12 markus 1495:
1496: if (identity_comment) {
1497: strlcpy(new_comment, identity_comment, sizeof(new_comment));
1498: } else {
1499: printf("Enter new comment: ");
1500: fflush(stdout);
1501: if (!fgets(new_comment, sizeof(new_comment), stdin)) {
1.240 djm 1502: explicit_bzero(passphrase, strlen(passphrase));
1.252 djm 1503: sshkey_free(private);
1.12 markus 1504: exit(1);
1505: }
1.162 gilles 1506: new_comment[strcspn(new_comment, "\n")] = '\0';
1.12 markus 1507: }
1508:
1509: /* Save the file using the new passphrase. */
1.252 djm 1510: if ((r = sshkey_save_private(private, identity_file, passphrase,
1511: new_comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 1512: error("Saving key \"%s\" failed: %s",
1.252 djm 1513: identity_file, ssh_err(r));
1.240 djm 1514: explicit_bzero(passphrase, strlen(passphrase));
1.227 djm 1515: free(passphrase);
1.252 djm 1516: sshkey_free(private);
1.227 djm 1517: free(comment);
1.12 markus 1518: exit(1);
1519: }
1.240 djm 1520: explicit_bzero(passphrase, strlen(passphrase));
1.227 djm 1521: free(passphrase);
1.252 djm 1522: if ((r = sshkey_from_private(private, &public)) != 0)
1.304 markus 1523: fatal("sshkey_from_private failed: %s", ssh_err(r));
1.252 djm 1524: sshkey_free(private);
1.12 markus 1525:
1526: strlcat(identity_file, ".pub", sizeof(identity_file));
1.46 deraadt 1527: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1.269 djm 1528: if (fd == -1)
1529: fatal("Could not save your public key in %s", identity_file);
1.46 deraadt 1530: f = fdopen(fd, "w");
1.269 djm 1531: if (f == NULL)
1532: fatal("fdopen %s failed: %s", identity_file, strerror(errno));
1.252 djm 1533: if ((r = sshkey_write(public, f)) != 0)
1.269 djm 1534: fatal("write key failed: %s", ssh_err(r));
1.252 djm 1535: sshkey_free(public);
1.19 markus 1536: fprintf(f, " %s\n", new_comment);
1.12 markus 1537: fclose(f);
1.1 deraadt 1538:
1.227 djm 1539: free(comment);
1.1 deraadt 1540:
1.12 markus 1541: printf("The comment in your key file has been changed.\n");
1542: exit(0);
1.1 deraadt 1543: }
1544:
1.179 djm 1545: static void
1.252 djm 1546: add_flag_option(struct sshbuf *c, const char *name)
1.179 djm 1547: {
1.252 djm 1548: int r;
1549:
1.179 djm 1550: debug3("%s: %s", __func__, name);
1.252 djm 1551: if ((r = sshbuf_put_cstring(c, name)) != 0 ||
1552: (r = sshbuf_put_string(c, NULL, 0)) != 0)
1553: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.179 djm 1554: }
1555:
1556: static void
1.252 djm 1557: add_string_option(struct sshbuf *c, const char *name, const char *value)
1.179 djm 1558: {
1.252 djm 1559: struct sshbuf *b;
1560: int r;
1.179 djm 1561:
1562: debug3("%s: %s=%s", __func__, name, value);
1.252 djm 1563: if ((b = sshbuf_new()) == NULL)
1564: fatal("%s: sshbuf_new failed", __func__);
1565: if ((r = sshbuf_put_cstring(b, value)) != 0 ||
1566: (r = sshbuf_put_cstring(c, name)) != 0 ||
1567: (r = sshbuf_put_stringb(c, b)) != 0)
1568: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.179 djm 1569:
1.252 djm 1570: sshbuf_free(b);
1.179 djm 1571: }
1572:
1.190 djm 1573: #define OPTIONS_CRITICAL 1
1574: #define OPTIONS_EXTENSIONS 2
1.179 djm 1575: static void
1.252 djm 1576: prepare_options_buf(struct sshbuf *c, int which)
1.179 djm 1577: {
1.300 djm 1578: size_t i;
1579:
1.252 djm 1580: sshbuf_reset(c);
1.196 djm 1581: if ((which & OPTIONS_CRITICAL) != 0 &&
1582: certflags_command != NULL)
1583: add_string_option(c, "force-command", certflags_command);
1.190 djm 1584: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.210 djm 1585: (certflags_flags & CERTOPT_X_FWD) != 0)
1586: add_flag_option(c, "permit-X11-forwarding");
1587: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.190 djm 1588: (certflags_flags & CERTOPT_AGENT_FWD) != 0)
1.186 djm 1589: add_flag_option(c, "permit-agent-forwarding");
1.190 djm 1590: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1591: (certflags_flags & CERTOPT_PORT_FWD) != 0)
1.186 djm 1592: add_flag_option(c, "permit-port-forwarding");
1.190 djm 1593: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1594: (certflags_flags & CERTOPT_PTY) != 0)
1.186 djm 1595: add_flag_option(c, "permit-pty");
1.190 djm 1596: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1597: (certflags_flags & CERTOPT_USER_RC) != 0)
1.186 djm 1598: add_flag_option(c, "permit-user-rc");
1.190 djm 1599: if ((which & OPTIONS_CRITICAL) != 0 &&
1600: certflags_src_addr != NULL)
1601: add_string_option(c, "source-address", certflags_src_addr);
1.300 djm 1602: for (i = 0; i < ncert_userext; i++) {
1603: if ((cert_userext[i].crit && (which & OPTIONS_EXTENSIONS)) ||
1604: (!cert_userext[i].crit && (which & OPTIONS_CRITICAL)))
1605: continue;
1606: if (cert_userext[i].val == NULL)
1607: add_flag_option(c, cert_userext[i].key);
1608: else {
1609: add_string_option(c, cert_userext[i].key,
1610: cert_userext[i].val);
1611: }
1612: }
1.179 djm 1613: }
1614:
1.252 djm 1615: static struct sshkey *
1.197 djm 1616: load_pkcs11_key(char *path)
1617: {
1618: #ifdef ENABLE_PKCS11
1.252 djm 1619: struct sshkey **keys = NULL, *public, *private = NULL;
1620: int r, i, nkeys;
1.197 djm 1621:
1.252 djm 1622: if ((r = sshkey_load_public(path, &public, NULL)) != 0)
1623: fatal("Couldn't load CA public key \"%s\": %s",
1624: path, ssh_err(r));
1.197 djm 1625:
1626: nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, &keys);
1627: debug3("%s: %d keys", __func__, nkeys);
1628: if (nkeys <= 0)
1629: fatal("cannot read public key from pkcs11");
1630: for (i = 0; i < nkeys; i++) {
1.252 djm 1631: if (sshkey_equal_public(public, keys[i])) {
1.197 djm 1632: private = keys[i];
1633: continue;
1634: }
1.252 djm 1635: sshkey_free(keys[i]);
1.197 djm 1636: }
1.227 djm 1637: free(keys);
1.252 djm 1638: sshkey_free(public);
1.197 djm 1639: return private;
1640: #else
1641: fatal("no pkcs11 support");
1642: #endif /* ENABLE_PKCS11 */
1643: }
1644:
1.305 djm 1645: /* Signer for sshkey_certify_custom that uses the agent */
1646: static int
1647: agent_signer(const struct sshkey *key, u_char **sigp, size_t *lenp,
1648: const u_char *data, size_t datalen,
1649: const char *alg, u_int compat, void *ctx)
1650: {
1651: int *agent_fdp = (int *)ctx;
1652:
1653: return ssh_agent_sign(*agent_fdp, key, sigp, lenp,
1654: data, datalen, alg, compat);
1655: }
1656:
1.179 djm 1657: static void
1658: do_ca_sign(struct passwd *pw, int argc, char **argv)
1659: {
1.305 djm 1660: int r, i, fd, found, agent_fd = -1;
1.179 djm 1661: u_int n;
1.252 djm 1662: struct sshkey *ca, *public;
1.281 djm 1663: char valid[64], *otmp, *tmp, *cp, *out, *comment, **plist = NULL;
1.179 djm 1664: FILE *f;
1.305 djm 1665: struct ssh_identitylist *agent_ids;
1666: size_t j;
1.186 djm 1667:
1.246 markus 1668: #ifdef ENABLE_PKCS11
1.197 djm 1669: pkcs11_init(1);
1.246 markus 1670: #endif
1.197 djm 1671: tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
1672: if (pkcs11provider != NULL) {
1.305 djm 1673: /* If a PKCS#11 token was specified then try to use it */
1.197 djm 1674: if ((ca = load_pkcs11_key(tmp)) == NULL)
1675: fatal("No PKCS#11 key matching %s found", ca_key_path);
1.305 djm 1676: } else if (prefer_agent) {
1677: /*
1678: * Agent signature requested. Try to use agent after making
1679: * sure the public key specified is actually present in the
1680: * agent.
1681: */
1682: if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)
1683: fatal("Cannot load CA public key %s: %s",
1684: tmp, ssh_err(r));
1685: if ((r = ssh_get_authentication_socket(&agent_fd)) != 0)
1686: fatal("Cannot use public key for CA signature: %s",
1687: ssh_err(r));
1688: if ((r = ssh_fetch_identitylist(agent_fd, &agent_ids)) != 0)
1689: fatal("Retrieve agent key list: %s", ssh_err(r));
1690: found = 0;
1691: for (j = 0; j < agent_ids->nkeys; j++) {
1692: if (sshkey_equal(ca, agent_ids->keys[j])) {
1693: found = 1;
1694: break;
1695: }
1696: }
1697: if (!found)
1698: fatal("CA key %s not found in agent", tmp);
1699: ssh_free_identitylist(agent_ids);
1700: ca->flags |= SSHKEY_FLAG_EXT;
1701: } else {
1702: /* CA key is assumed to be a private key on the filesystem */
1.252 djm 1703: ca = load_identity(tmp);
1.305 djm 1704: }
1.227 djm 1705: free(tmp);
1.197 djm 1706:
1.290 djm 1707: if (key_type_name != NULL &&
1708: sshkey_type_from_name(key_type_name) != ca->type) {
1709: fatal("CA key type %s doesn't match specified %s",
1710: sshkey_ssh_name(ca), key_type_name);
1711: }
1712:
1.179 djm 1713: for (i = 0; i < argc; i++) {
1714: /* Split list of principals */
1715: n = 0;
1716: if (cert_principals != NULL) {
1717: otmp = tmp = xstrdup(cert_principals);
1718: plist = NULL;
1719: for (; (cp = strsep(&tmp, ",")) != NULL; n++) {
1.270 deraadt 1720: plist = xreallocarray(plist, n + 1, sizeof(*plist));
1.179 djm 1721: if (*(plist[n] = xstrdup(cp)) == '\0')
1722: fatal("Empty principal name");
1723: }
1.227 djm 1724: free(otmp);
1.179 djm 1725: }
1.312 djm 1726: if (n > SSHKEY_CERT_MAX_PRINCIPALS)
1727: fatal("Too many certificate principals specified");
1.179 djm 1728:
1729: tmp = tilde_expand_filename(argv[i], pw->pw_uid);
1.252 djm 1730: if ((r = sshkey_load_public(tmp, &public, &comment)) != 0)
1731: fatal("%s: unable to open \"%s\": %s",
1732: __func__, tmp, ssh_err(r));
1.200 djm 1733: if (public->type != KEY_RSA && public->type != KEY_DSA &&
1.313 markus 1734: public->type != KEY_ECDSA && public->type != KEY_ED25519 &&
1735: public->type != KEY_XMSS)
1.179 djm 1736: fatal("%s: key \"%s\" type %s cannot be certified",
1.252 djm 1737: __func__, tmp, sshkey_type(public));
1.179 djm 1738:
1739: /* Prepare certificate to sign */
1.275 djm 1740: if ((r = sshkey_to_certified(public)) != 0)
1.252 djm 1741: fatal("Could not upgrade key %s to certificate: %s",
1742: tmp, ssh_err(r));
1.179 djm 1743: public->cert->type = cert_key_type;
1.186 djm 1744: public->cert->serial = (u_int64_t)cert_serial;
1.179 djm 1745: public->cert->key_id = xstrdup(cert_key_id);
1746: public->cert->nprincipals = n;
1747: public->cert->principals = plist;
1748: public->cert->valid_after = cert_valid_from;
1749: public->cert->valid_before = cert_valid_to;
1.275 djm 1750: prepare_options_buf(public->cert->critical, OPTIONS_CRITICAL);
1751: prepare_options_buf(public->cert->extensions,
1752: OPTIONS_EXTENSIONS);
1.252 djm 1753: if ((r = sshkey_from_private(ca,
1754: &public->cert->signature_key)) != 0)
1.304 markus 1755: fatal("sshkey_from_private (ca key): %s", ssh_err(r));
1.179 djm 1756:
1.305 djm 1757: if (agent_fd != -1 && (ca->flags & SSHKEY_FLAG_EXT) != 0) {
1758: if ((r = sshkey_certify_custom(public, ca,
1759: key_type_name, agent_signer, &agent_fd)) != 0)
1760: fatal("Couldn't certify key %s via agent: %s",
1761: tmp, ssh_err(r));
1762: } else {
1763: if ((sshkey_certify(public, ca, key_type_name)) != 0)
1764: fatal("Couldn't certify key %s: %s",
1765: tmp, ssh_err(r));
1766: }
1.179 djm 1767:
1768: if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0)
1769: *cp = '\0';
1770: xasprintf(&out, "%s-cert.pub", tmp);
1.227 djm 1771: free(tmp);
1.179 djm 1772:
1773: if ((fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
1774: fatal("Could not open \"%s\" for writing: %s", out,
1775: strerror(errno));
1776: if ((f = fdopen(fd, "w")) == NULL)
1777: fatal("%s: fdopen: %s", __func__, strerror(errno));
1.252 djm 1778: if ((r = sshkey_write(public, f)) != 0)
1779: fatal("Could not write certified key to %s: %s",
1780: out, ssh_err(r));
1.179 djm 1781: fprintf(f, " %s\n", comment);
1782: fclose(f);
1783:
1.186 djm 1784: if (!quiet) {
1.282 djm 1785: sshkey_format_cert_validity(public->cert,
1.281 djm 1786: valid, sizeof(valid));
1.186 djm 1787: logit("Signed %s key %s: id \"%s\" serial %llu%s%s "
1.282 djm 1788: "valid %s", sshkey_cert_type(public),
1.205 djm 1789: out, public->cert->key_id,
1790: (unsigned long long)public->cert->serial,
1.179 djm 1791: cert_principals != NULL ? " for " : "",
1792: cert_principals != NULL ? cert_principals : "",
1.281 djm 1793: valid);
1.186 djm 1794: }
1.179 djm 1795:
1.252 djm 1796: sshkey_free(public);
1.227 djm 1797: free(out);
1.179 djm 1798: }
1.246 markus 1799: #ifdef ENABLE_PKCS11
1.197 djm 1800: pkcs11_terminate();
1.246 markus 1801: #endif
1.179 djm 1802: exit(0);
1803: }
1804:
1805: static u_int64_t
1806: parse_relative_time(const char *s, time_t now)
1807: {
1808: int64_t mul, secs;
1809:
1810: mul = *s == '-' ? -1 : 1;
1811:
1812: if ((secs = convtime(s + 1)) == -1)
1813: fatal("Invalid relative certificate time %s", s);
1814: if (mul == -1 && secs > now)
1815: fatal("Certificate time %s cannot be represented", s);
1816: return now + (u_int64_t)(secs * mul);
1817: }
1818:
1819: static void
1820: parse_cert_times(char *timespec)
1821: {
1822: char *from, *to;
1823: time_t now = time(NULL);
1824: int64_t secs;
1825:
1826: /* +timespec relative to now */
1827: if (*timespec == '+' && strchr(timespec, ':') == NULL) {
1828: if ((secs = convtime(timespec + 1)) == -1)
1829: fatal("Invalid relative certificate life %s", timespec);
1830: cert_valid_to = now + secs;
1831: /*
1832: * Backdate certificate one minute to avoid problems on hosts
1833: * with poorly-synchronised clocks.
1834: */
1835: cert_valid_from = ((now - 59)/ 60) * 60;
1836: return;
1837: }
1838:
1839: /*
1840: * from:to, where
1.308 djm 1841: * from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "always"
1842: * to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "forever"
1.179 djm 1843: */
1844: from = xstrdup(timespec);
1845: to = strchr(from, ':');
1846: if (to == NULL || from == to || *(to + 1) == '\0')
1.181 djm 1847: fatal("Invalid certificate life specification %s", timespec);
1.179 djm 1848: *to++ = '\0';
1849:
1850: if (*from == '-' || *from == '+')
1851: cert_valid_from = parse_relative_time(from, now);
1.308 djm 1852: else if (strcmp(from, "always") == 0)
1853: cert_valid_from = 0;
1.314 djm 1854: else if (parse_absolute_time(from, &cert_valid_from) != 0)
1855: fatal("Invalid from time \"%s\"", from);
1.179 djm 1856:
1857: if (*to == '-' || *to == '+')
1.235 djm 1858: cert_valid_to = parse_relative_time(to, now);
1.308 djm 1859: else if (strcmp(to, "forever") == 0)
1860: cert_valid_to = ~(u_int64_t)0;
1.314 djm 1861: else if (parse_absolute_time(to, &cert_valid_to) != 0)
1862: fatal("Invalid to time \"%s\"", to);
1.179 djm 1863:
1864: if (cert_valid_to <= cert_valid_from)
1865: fatal("Empty certificate validity interval");
1.227 djm 1866: free(from);
1.179 djm 1867: }
1868:
1869: static void
1.186 djm 1870: add_cert_option(char *opt)
1.179 djm 1871: {
1.300 djm 1872: char *val, *cp;
1873: int iscrit = 0;
1.179 djm 1874:
1.208 stevesk 1875: if (strcasecmp(opt, "clear") == 0)
1.190 djm 1876: certflags_flags = 0;
1.179 djm 1877: else if (strcasecmp(opt, "no-x11-forwarding") == 0)
1.190 djm 1878: certflags_flags &= ~CERTOPT_X_FWD;
1.179 djm 1879: else if (strcasecmp(opt, "permit-x11-forwarding") == 0)
1.190 djm 1880: certflags_flags |= CERTOPT_X_FWD;
1.179 djm 1881: else if (strcasecmp(opt, "no-agent-forwarding") == 0)
1.190 djm 1882: certflags_flags &= ~CERTOPT_AGENT_FWD;
1.179 djm 1883: else if (strcasecmp(opt, "permit-agent-forwarding") == 0)
1.190 djm 1884: certflags_flags |= CERTOPT_AGENT_FWD;
1.179 djm 1885: else if (strcasecmp(opt, "no-port-forwarding") == 0)
1.190 djm 1886: certflags_flags &= ~CERTOPT_PORT_FWD;
1.179 djm 1887: else if (strcasecmp(opt, "permit-port-forwarding") == 0)
1.190 djm 1888: certflags_flags |= CERTOPT_PORT_FWD;
1.179 djm 1889: else if (strcasecmp(opt, "no-pty") == 0)
1.190 djm 1890: certflags_flags &= ~CERTOPT_PTY;
1.179 djm 1891: else if (strcasecmp(opt, "permit-pty") == 0)
1.190 djm 1892: certflags_flags |= CERTOPT_PTY;
1.179 djm 1893: else if (strcasecmp(opt, "no-user-rc") == 0)
1.190 djm 1894: certflags_flags &= ~CERTOPT_USER_RC;
1.179 djm 1895: else if (strcasecmp(opt, "permit-user-rc") == 0)
1.190 djm 1896: certflags_flags |= CERTOPT_USER_RC;
1.179 djm 1897: else if (strncasecmp(opt, "force-command=", 14) == 0) {
1898: val = opt + 14;
1899: if (*val == '\0')
1.186 djm 1900: fatal("Empty force-command option");
1.190 djm 1901: if (certflags_command != NULL)
1.179 djm 1902: fatal("force-command already specified");
1.190 djm 1903: certflags_command = xstrdup(val);
1.179 djm 1904: } else if (strncasecmp(opt, "source-address=", 15) == 0) {
1905: val = opt + 15;
1906: if (*val == '\0')
1.186 djm 1907: fatal("Empty source-address option");
1.190 djm 1908: if (certflags_src_addr != NULL)
1.179 djm 1909: fatal("source-address already specified");
1910: if (addr_match_cidr_list(NULL, val) != 0)
1911: fatal("Invalid source-address list");
1.190 djm 1912: certflags_src_addr = xstrdup(val);
1.300 djm 1913: } else if (strncasecmp(opt, "extension:", 10) == 0 ||
1914: (iscrit = (strncasecmp(opt, "critical:", 9) == 0))) {
1915: val = xstrdup(strchr(opt, ':') + 1);
1916: if ((cp = strchr(val, '=')) != NULL)
1917: *cp++ = '\0';
1918: cert_userext = xreallocarray(cert_userext, ncert_userext + 1,
1919: sizeof(*cert_userext));
1920: cert_userext[ncert_userext].key = val;
1921: cert_userext[ncert_userext].val = cp == NULL ?
1922: NULL : xstrdup(cp);
1923: cert_userext[ncert_userext].crit = iscrit;
1924: ncert_userext++;
1.179 djm 1925: } else
1.186 djm 1926: fatal("Unsupported certificate option \"%s\"", opt);
1.179 djm 1927: }
1928:
1.63 itojun 1929: static void
1.275 djm 1930: show_options(struct sshbuf *optbuf, int in_critical)
1.192 djm 1931: {
1.245 djm 1932: char *name, *arg;
1.252 djm 1933: struct sshbuf *options, *option = NULL;
1934: int r;
1935:
1936: if ((options = sshbuf_fromb(optbuf)) == NULL)
1937: fatal("%s: sshbuf_fromb failed", __func__);
1938: while (sshbuf_len(options) != 0) {
1939: sshbuf_free(option);
1940: option = NULL;
1941: if ((r = sshbuf_get_cstring(options, &name, NULL)) != 0 ||
1942: (r = sshbuf_froms(options, &option)) != 0)
1943: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.192 djm 1944: printf(" %s", name);
1.275 djm 1945: if (!in_critical &&
1.192 djm 1946: (strcmp(name, "permit-X11-forwarding") == 0 ||
1947: strcmp(name, "permit-agent-forwarding") == 0 ||
1948: strcmp(name, "permit-port-forwarding") == 0 ||
1949: strcmp(name, "permit-pty") == 0 ||
1950: strcmp(name, "permit-user-rc") == 0))
1951: printf("\n");
1.275 djm 1952: else if (in_critical &&
1.192 djm 1953: (strcmp(name, "force-command") == 0 ||
1954: strcmp(name, "source-address") == 0)) {
1.252 djm 1955: if ((r = sshbuf_get_cstring(option, &arg, NULL)) != 0)
1956: fatal("%s: buffer error: %s",
1957: __func__, ssh_err(r));
1.245 djm 1958: printf(" %s\n", arg);
1959: free(arg);
1.192 djm 1960: } else {
1.252 djm 1961: printf(" UNKNOWN OPTION (len %zu)\n",
1962: sshbuf_len(option));
1963: sshbuf_reset(option);
1.192 djm 1964: }
1.227 djm 1965: free(name);
1.252 djm 1966: if (sshbuf_len(option) != 0)
1.192 djm 1967: fatal("Option corrupt: extra data at end");
1968: }
1.252 djm 1969: sshbuf_free(option);
1970: sshbuf_free(options);
1.192 djm 1971: }
1972:
1973: static void
1.278 djm 1974: print_cert(struct sshkey *key)
1.182 djm 1975: {
1.281 djm 1976: char valid[64], *key_fp, *ca_fp;
1.275 djm 1977: u_int i;
1.186 djm 1978:
1.252 djm 1979: key_fp = sshkey_fingerprint(key, fingerprint_hash, SSH_FP_DEFAULT);
1980: ca_fp = sshkey_fingerprint(key->cert->signature_key,
1.251 djm 1981: fingerprint_hash, SSH_FP_DEFAULT);
1.259 djm 1982: if (key_fp == NULL || ca_fp == NULL)
1983: fatal("%s: sshkey_fingerprint fail", __func__);
1.281 djm 1984: sshkey_format_cert_validity(key->cert, valid, sizeof(valid));
1.182 djm 1985:
1.252 djm 1986: printf(" Type: %s %s certificate\n", sshkey_ssh_name(key),
1987: sshkey_cert_type(key));
1988: printf(" Public key: %s %s\n", sshkey_type(key), key_fp);
1.186 djm 1989: printf(" Signing CA: %s %s\n",
1.252 djm 1990: sshkey_type(key->cert->signature_key), ca_fp);
1.186 djm 1991: printf(" Key ID: \"%s\"\n", key->cert->key_id);
1.275 djm 1992: printf(" Serial: %llu\n", (unsigned long long)key->cert->serial);
1.281 djm 1993: printf(" Valid: %s\n", valid);
1.182 djm 1994: printf(" Principals: ");
1995: if (key->cert->nprincipals == 0)
1996: printf("(none)\n");
1997: else {
1998: for (i = 0; i < key->cert->nprincipals; i++)
1999: printf("\n %s",
2000: key->cert->principals[i]);
2001: printf("\n");
2002: }
1.186 djm 2003: printf(" Critical Options: ");
1.252 djm 2004: if (sshbuf_len(key->cert->critical) == 0)
1.182 djm 2005: printf("(none)\n");
2006: else {
2007: printf("\n");
1.275 djm 2008: show_options(key->cert->critical, 1);
1.186 djm 2009: }
1.275 djm 2010: printf(" Extensions: ");
2011: if (sshbuf_len(key->cert->extensions) == 0)
2012: printf("(none)\n");
2013: else {
2014: printf("\n");
2015: show_options(key->cert->extensions, 0);
1.182 djm 2016: }
1.278 djm 2017: }
2018:
2019: static void
2020: do_show_cert(struct passwd *pw)
2021: {
2022: struct sshkey *key = NULL;
2023: struct stat st;
2024: int r, is_stdin = 0, ok = 0;
2025: FILE *f;
1.317 markus 2026: char *cp, *line = NULL;
1.278 djm 2027: const char *path;
1.317 markus 2028: size_t linesize = 0;
1.289 djm 2029: u_long lnum = 0;
1.278 djm 2030:
2031: if (!have_identity)
2032: ask_filename(pw, "Enter file in which the key is");
2033: if (strcmp(identity_file, "-") != 0 && stat(identity_file, &st) < 0)
2034: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
2035:
2036: path = identity_file;
2037: if (strcmp(path, "-") == 0) {
2038: f = stdin;
2039: path = "(stdin)";
2040: is_stdin = 1;
2041: } else if ((f = fopen(identity_file, "r")) == NULL)
2042: fatal("fopen %s: %s", identity_file, strerror(errno));
2043:
1.317 markus 2044: while (getline(&line, &linesize, f) != -1) {
2045: lnum++;
1.278 djm 2046: sshkey_free(key);
2047: key = NULL;
2048: /* Trim leading space and comments */
2049: cp = line + strspn(line, " \t");
2050: if (*cp == '#' || *cp == '\0')
2051: continue;
2052: if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
1.304 markus 2053: fatal("sshkey_new");
1.278 djm 2054: if ((r = sshkey_read(key, &cp)) != 0) {
2055: error("%s:%lu: invalid key: %s", path,
2056: lnum, ssh_err(r));
2057: continue;
2058: }
2059: if (!sshkey_is_cert(key)) {
2060: error("%s:%lu is not a certificate", path, lnum);
2061: continue;
2062: }
2063: ok = 1;
2064: if (!is_stdin && lnum == 1)
2065: printf("%s:\n", path);
2066: else
2067: printf("%s:%lu:\n", path, lnum);
2068: print_cert(key);
2069: }
1.317 markus 2070: free(line);
1.278 djm 2071: sshkey_free(key);
2072: fclose(f);
2073: exit(ok ? 0 : 1);
1.182 djm 2074: }
2075:
1.246 markus 2076: #ifdef WITH_OPENSSL
1.182 djm 2077: static void
1.223 djm 2078: load_krl(const char *path, struct ssh_krl **krlp)
2079: {
1.252 djm 2080: struct sshbuf *krlbuf;
2081: int r, fd;
1.223 djm 2082:
1.252 djm 2083: if ((krlbuf = sshbuf_new()) == NULL)
2084: fatal("sshbuf_new failed");
1.223 djm 2085: if ((fd = open(path, O_RDONLY)) == -1)
2086: fatal("open %s: %s", path, strerror(errno));
1.252 djm 2087: if ((r = sshkey_load_file(fd, krlbuf)) != 0)
2088: fatal("Unable to load KRL: %s", ssh_err(r));
1.223 djm 2089: close(fd);
2090: /* XXX check sigs */
1.252 djm 2091: if ((r = ssh_krl_from_blob(krlbuf, krlp, NULL, 0)) != 0 ||
1.223 djm 2092: *krlp == NULL)
1.252 djm 2093: fatal("Invalid KRL file: %s", ssh_err(r));
2094: sshbuf_free(krlbuf);
1.223 djm 2095: }
2096:
2097: static void
1.320 djm 2098: hash_to_blob(const char *cp, u_char **blobp, size_t *lenp,
2099: const char *file, u_long lnum)
2100: {
2101: char *tmp;
2102: size_t tlen;
2103: struct sshbuf *b;
2104: int r;
2105:
2106: if (strncmp(cp, "SHA256:", 7) != 0)
2107: fatal("%s:%lu: unsupported hash algorithm", file, lnum);
2108: cp += 7;
2109:
2110: /*
2111: * OpenSSH base64 hashes omit trailing '='
2112: * characters; put them back for decode.
2113: */
2114: tlen = strlen(cp);
2115: tmp = xmalloc(tlen + 4 + 1);
2116: strlcpy(tmp, cp, tlen + 1);
2117: while ((tlen % 4) != 0) {
2118: tmp[tlen++] = '=';
2119: tmp[tlen] = '\0';
2120: }
2121: if ((b = sshbuf_new()) == NULL)
2122: fatal("%s: sshbuf_new failed", __func__);
2123: if ((r = sshbuf_b64tod(b, tmp)) != 0)
2124: fatal("%s:%lu: decode hash failed: %s", file, lnum, ssh_err(r));
2125: free(tmp);
2126: *lenp = sshbuf_len(b);
2127: *blobp = xmalloc(*lenp);
2128: memcpy(*blobp, sshbuf_ptr(b), *lenp);
2129: sshbuf_free(b);
2130: }
2131:
2132: static void
1.261 djm 2133: update_krl_from_file(struct passwd *pw, const char *file, int wild_ca,
1.252 djm 2134: const struct sshkey *ca, struct ssh_krl *krl)
1.223 djm 2135: {
1.252 djm 2136: struct sshkey *key = NULL;
1.223 djm 2137: u_long lnum = 0;
1.317 markus 2138: char *path, *cp, *ep, *line = NULL;
1.320 djm 2139: u_char *blob = NULL;
2140: size_t blen = 0, linesize = 0;
1.223 djm 2141: unsigned long long serial, serial2;
1.320 djm 2142: int i, was_explicit_key, was_sha1, was_sha256, was_hash, r;
1.223 djm 2143: FILE *krl_spec;
2144:
2145: path = tilde_expand_filename(file, pw->pw_uid);
2146: if (strcmp(path, "-") == 0) {
2147: krl_spec = stdin;
2148: free(path);
2149: path = xstrdup("(standard input)");
2150: } else if ((krl_spec = fopen(path, "r")) == NULL)
2151: fatal("fopen %s: %s", path, strerror(errno));
2152:
2153: if (!quiet)
2154: printf("Revoking from %s\n", path);
1.317 markus 2155: while (getline(&line, &linesize, krl_spec) != -1) {
2156: lnum++;
1.320 djm 2157: was_explicit_key = was_sha1 = was_sha256 = was_hash = 0;
1.223 djm 2158: cp = line + strspn(line, " \t");
2159: /* Trim trailing space, comments and strip \n */
2160: for (i = 0, r = -1; cp[i] != '\0'; i++) {
2161: if (cp[i] == '#' || cp[i] == '\n') {
2162: cp[i] = '\0';
2163: break;
2164: }
2165: if (cp[i] == ' ' || cp[i] == '\t') {
2166: /* Remember the start of a span of whitespace */
2167: if (r == -1)
2168: r = i;
2169: } else
2170: r = -1;
2171: }
2172: if (r != -1)
2173: cp[r] = '\0';
2174: if (*cp == '\0')
2175: continue;
2176: if (strncasecmp(cp, "serial:", 7) == 0) {
1.261 djm 2177: if (ca == NULL && !wild_ca) {
1.231 djm 2178: fatal("revoking certificates by serial number "
1.223 djm 2179: "requires specification of a CA key");
2180: }
2181: cp += 7;
2182: cp = cp + strspn(cp, " \t");
2183: errno = 0;
2184: serial = strtoull(cp, &ep, 0);
2185: if (*cp == '\0' || (*ep != '\0' && *ep != '-'))
2186: fatal("%s:%lu: invalid serial \"%s\"",
2187: path, lnum, cp);
2188: if (errno == ERANGE && serial == ULLONG_MAX)
2189: fatal("%s:%lu: serial out of range",
2190: path, lnum);
2191: serial2 = serial;
2192: if (*ep == '-') {
2193: cp = ep + 1;
2194: errno = 0;
2195: serial2 = strtoull(cp, &ep, 0);
2196: if (*cp == '\0' || *ep != '\0')
2197: fatal("%s:%lu: invalid serial \"%s\"",
2198: path, lnum, cp);
2199: if (errno == ERANGE && serial2 == ULLONG_MAX)
2200: fatal("%s:%lu: serial out of range",
2201: path, lnum);
2202: if (serial2 <= serial)
2203: fatal("%s:%lu: invalid serial range "
2204: "%llu:%llu", path, lnum,
2205: (unsigned long long)serial,
2206: (unsigned long long)serial2);
2207: }
2208: if (ssh_krl_revoke_cert_by_serial_range(krl,
2209: ca, serial, serial2) != 0) {
2210: fatal("%s: revoke serial failed",
2211: __func__);
2212: }
2213: } else if (strncasecmp(cp, "id:", 3) == 0) {
1.261 djm 2214: if (ca == NULL && !wild_ca) {
1.232 djm 2215: fatal("revoking certificates by key ID "
1.223 djm 2216: "requires specification of a CA key");
2217: }
2218: cp += 3;
2219: cp = cp + strspn(cp, " \t");
2220: if (ssh_krl_revoke_cert_by_key_id(krl, ca, cp) != 0)
2221: fatal("%s: revoke key ID failed", __func__);
1.320 djm 2222: } else if (strncasecmp(cp, "hash:", 5) == 0) {
2223: cp += 5;
2224: cp = cp + strspn(cp, " \t");
2225: hash_to_blob(cp, &blob, &blen, file, lnum);
2226: r = ssh_krl_revoke_key_sha256(krl, blob, blen);
1.223 djm 2227: } else {
2228: if (strncasecmp(cp, "key:", 4) == 0) {
2229: cp += 4;
2230: cp = cp + strspn(cp, " \t");
2231: was_explicit_key = 1;
2232: } else if (strncasecmp(cp, "sha1:", 5) == 0) {
2233: cp += 5;
2234: cp = cp + strspn(cp, " \t");
2235: was_sha1 = 1;
1.320 djm 2236: } else if (strncasecmp(cp, "sha256:", 7) == 0) {
2237: cp += 7;
2238: cp = cp + strspn(cp, " \t");
2239: was_sha256 = 1;
1.223 djm 2240: /*
2241: * Just try to process the line as a key.
2242: * Parsing will fail if it isn't.
2243: */
2244: }
1.252 djm 2245: if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
1.304 markus 2246: fatal("sshkey_new");
1.252 djm 2247: if ((r = sshkey_read(key, &cp)) != 0)
2248: fatal("%s:%lu: invalid key: %s",
2249: path, lnum, ssh_err(r));
1.223 djm 2250: if (was_explicit_key)
2251: r = ssh_krl_revoke_key_explicit(krl, key);
1.320 djm 2252: else if (was_sha1) {
2253: if (sshkey_fingerprint_raw(key,
2254: SSH_DIGEST_SHA1, &blob, &blen) != 0) {
2255: fatal("%s:%lu: fingerprint failed",
2256: file, lnum);
2257: }
2258: r = ssh_krl_revoke_key_sha1(krl, blob, blen);
2259: } else if (was_sha256) {
2260: if (sshkey_fingerprint_raw(key,
2261: SSH_DIGEST_SHA256, &blob, &blen) != 0) {
2262: fatal("%s:%lu: fingerprint failed",
2263: file, lnum);
2264: }
2265: r = ssh_krl_revoke_key_sha256(krl, blob, blen);
2266: } else
1.223 djm 2267: r = ssh_krl_revoke_key(krl, key);
2268: if (r != 0)
1.252 djm 2269: fatal("%s: revoke key failed: %s",
2270: __func__, ssh_err(r));
1.320 djm 2271: freezero(blob, blen);
2272: blob = NULL;
2273: blen = 0;
1.252 djm 2274: sshkey_free(key);
1.223 djm 2275: }
2276: }
2277: if (strcmp(path, "-") != 0)
2278: fclose(krl_spec);
1.317 markus 2279: free(line);
1.226 djm 2280: free(path);
1.223 djm 2281: }
2282:
2283: static void
2284: do_gen_krl(struct passwd *pw, int updating, int argc, char **argv)
2285: {
2286: struct ssh_krl *krl;
2287: struct stat sb;
1.252 djm 2288: struct sshkey *ca = NULL;
1.261 djm 2289: int fd, i, r, wild_ca = 0;
1.223 djm 2290: char *tmp;
1.252 djm 2291: struct sshbuf *kbuf;
1.223 djm 2292:
2293: if (*identity_file == '\0')
2294: fatal("KRL generation requires an output file");
2295: if (stat(identity_file, &sb) == -1) {
2296: if (errno != ENOENT)
2297: fatal("Cannot access KRL \"%s\": %s",
2298: identity_file, strerror(errno));
2299: if (updating)
2300: fatal("KRL \"%s\" does not exist", identity_file);
2301: }
2302: if (ca_key_path != NULL) {
1.261 djm 2303: if (strcasecmp(ca_key_path, "none") == 0)
2304: wild_ca = 1;
2305: else {
2306: tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
2307: if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)
2308: fatal("Cannot load CA public key %s: %s",
2309: tmp, ssh_err(r));
2310: free(tmp);
2311: }
1.223 djm 2312: }
2313:
2314: if (updating)
2315: load_krl(identity_file, &krl);
2316: else if ((krl = ssh_krl_init()) == NULL)
2317: fatal("couldn't create KRL");
2318:
2319: if (cert_serial != 0)
2320: ssh_krl_set_version(krl, cert_serial);
2321: if (identity_comment != NULL)
2322: ssh_krl_set_comment(krl, identity_comment);
2323:
2324: for (i = 0; i < argc; i++)
1.261 djm 2325: update_krl_from_file(pw, argv[i], wild_ca, ca, krl);
1.223 djm 2326:
1.252 djm 2327: if ((kbuf = sshbuf_new()) == NULL)
2328: fatal("sshbuf_new failed");
2329: if (ssh_krl_to_blob(krl, kbuf, NULL, 0) != 0)
1.223 djm 2330: fatal("Couldn't generate KRL");
2331: if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
2332: fatal("open %s: %s", identity_file, strerror(errno));
1.318 markus 2333: if (atomicio(vwrite, fd, sshbuf_mutable_ptr(kbuf), sshbuf_len(kbuf)) !=
1.252 djm 2334: sshbuf_len(kbuf))
1.223 djm 2335: fatal("write %s: %s", identity_file, strerror(errno));
2336: close(fd);
1.252 djm 2337: sshbuf_free(kbuf);
1.223 djm 2338: ssh_krl_free(krl);
1.286 mmcc 2339: sshkey_free(ca);
1.223 djm 2340: }
2341:
2342: static void
2343: do_check_krl(struct passwd *pw, int argc, char **argv)
2344: {
2345: int i, r, ret = 0;
2346: char *comment;
2347: struct ssh_krl *krl;
1.252 djm 2348: struct sshkey *k;
1.223 djm 2349:
2350: if (*identity_file == '\0')
2351: fatal("KRL checking requires an input file");
2352: load_krl(identity_file, &krl);
2353: for (i = 0; i < argc; i++) {
1.252 djm 2354: if ((r = sshkey_load_public(argv[i], &k, &comment)) != 0)
2355: fatal("Cannot load public key %s: %s",
2356: argv[i], ssh_err(r));
1.223 djm 2357: r = ssh_krl_check_key(krl, k);
2358: printf("%s%s%s%s: %s\n", argv[i],
2359: *comment ? " (" : "", comment, *comment ? ")" : "",
2360: r == 0 ? "ok" : "REVOKED");
2361: if (r != 0)
2362: ret = 1;
1.252 djm 2363: sshkey_free(k);
1.223 djm 2364: free(comment);
2365: }
2366: ssh_krl_free(krl);
2367: exit(ret);
2368: }
1.246 markus 2369: #endif
1.223 djm 2370:
2371: static void
1.10 markus 2372: usage(void)
2373: {
1.243 deraadt 2374: fprintf(stderr,
1.302 djm 2375: "usage: ssh-keygen [-q] [-b bits] [-t dsa | ecdsa | ed25519 | rsa]\n"
1.243 deraadt 2376: " [-N new_passphrase] [-C comment] [-f output_keyfile]\n"
2377: " ssh-keygen -p [-P old_passphrase] [-N new_passphrase] [-f keyfile]\n"
2378: " ssh-keygen -i [-m key_format] [-f input_keyfile]\n"
2379: " ssh-keygen -e [-m key_format] [-f input_keyfile]\n"
2380: " ssh-keygen -y [-f input_keyfile]\n"
2381: " ssh-keygen -c [-P passphrase] [-C comment] [-f keyfile]\n"
1.265 naddy 2382: " ssh-keygen -l [-v] [-E fingerprint_hash] [-f input_keyfile]\n"
1.302 djm 2383: " ssh-keygen -B [-f input_keyfile]\n");
1.177 markus 2384: #ifdef ENABLE_PKCS11
1.243 deraadt 2385: fprintf(stderr,
2386: " ssh-keygen -D pkcs11\n");
1.177 markus 2387: #endif
1.243 deraadt 2388: fprintf(stderr,
2389: " ssh-keygen -F hostname [-f known_hosts_file] [-l]\n"
2390: " ssh-keygen -H [-f known_hosts_file]\n"
2391: " ssh-keygen -R hostname [-f known_hosts_file]\n"
2392: " ssh-keygen -r hostname [-f input_keyfile] [-g]\n"
1.274 djm 2393: #ifdef WITH_OPENSSL
1.243 deraadt 2394: " ssh-keygen -G output_file [-v] [-b bits] [-M memory] [-S start_point]\n"
2395: " ssh-keygen -T output_file -f input_file [-v] [-a rounds] [-J num_lines]\n"
2396: " [-j start_line] [-K checkpt] [-W generator]\n"
1.274 djm 2397: #endif
1.305 djm 2398: " ssh-keygen -s ca_key -I certificate_identity [-h] [-U]\n"
2399: " [-D pkcs11_provider] [-n principals] [-O option]\n"
2400: " [-V validity_interval] [-z serial_number] file ...\n"
1.243 deraadt 2401: " ssh-keygen -L [-f input_keyfile]\n"
2402: " ssh-keygen -A\n"
2403: " ssh-keygen -k -f krl_file [-u] [-s ca_public] [-z version_number]\n"
2404: " file ...\n"
2405: " ssh-keygen -Q -f krl_file file ...\n");
1.12 markus 2406: exit(1);
1.10 markus 2407: }
2408:
1.13 deraadt 2409: /*
2410: * Main program for key management.
2411: */
1.2 provos 2412: int
1.156 deraadt 2413: main(int argc, char **argv)
1.1 deraadt 2414: {
1.253 deraadt 2415: char dotsshdir[PATH_MAX], comment[1024], *passphrase1, *passphrase2;
1.274 djm 2416: char *rr_hostname = NULL, *ep, *fp, *ra;
1.252 djm 2417: struct sshkey *private, *public;
1.12 markus 2418: struct passwd *pw;
2419: struct stat st;
1.252 djm 2420: int r, opt, type, fd;
1.274 djm 2421: int gen_all_hostkeys = 0, gen_krl = 0, update_krl = 0, check_krl = 0;
2422: FILE *f;
2423: const char *errstr;
2424: #ifdef WITH_OPENSSL
2425: /* Moduli generation/screening */
2426: char out_file[PATH_MAX], *checkpoint = NULL;
1.237 markus 2427: u_int32_t memory = 0, generator_wanted = 0;
1.107 djm 2428: int do_gen_candidates = 0, do_screen_candidates = 0;
1.215 dtucker 2429: unsigned long start_lineno = 0, lines_to_process = 0;
1.107 djm 2430: BIGNUM *start = NULL;
1.274 djm 2431: #endif
1.33 markus 2432:
1.12 markus 2433: extern int optind;
2434: extern char *optarg;
1.129 djm 2435:
1.288 dtucker 2436: ssh_malloc_init(); /* must be called before any mallocs */
1.129 djm 2437: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
2438: sanitise_stdfd();
1.12 markus 2439:
1.201 djm 2440: OpenSSL_add_all_algorithms();
1.156 deraadt 2441: log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
1.294 djm 2442:
2443: setlocale(LC_CTYPE, "");
1.19 markus 2444:
1.14 markus 2445: /* we need this for the home * directory. */
1.12 markus 2446: pw = getpwuid(getuid());
1.269 djm 2447: if (!pw)
2448: fatal("No user exists for uid %lu", (u_long)getuid());
2449: if (gethostname(hostname, sizeof(hostname)) < 0)
2450: fatal("gethostname: %s", strerror(errno));
1.14 markus 2451:
1.305 djm 2452: /* Remaining characters: Ydw */
2453: while ((opt = getopt(argc, argv, "ABHLQUXceghiklopquvxy"
1.251 djm 2454: "C:D:E:F:G:I:J:K:M:N:O:P:R:S:T:V:W:Z:"
2455: "a:b:f:g:j:m:n:r:s:t:z:")) != -1) {
1.12 markus 2456: switch (opt) {
1.206 stevesk 2457: case 'A':
2458: gen_all_hostkeys = 1;
2459: break;
1.12 markus 2460: case 'b':
1.313 markus 2461: bits = (u_int32_t)strtonum(optarg, 10, 32768, &errstr);
1.125 avsm 2462: if (errstr)
2463: fatal("Bits has bad value %s (%s)",
2464: optarg, errstr);
1.12 markus 2465: break;
1.251 djm 2466: case 'E':
2467: fingerprint_hash = ssh_digest_alg_by_name(optarg);
2468: if (fingerprint_hash == -1)
2469: fatal("Invalid hash algorithm \"%s\"", optarg);
2470: break;
1.119 djm 2471: case 'F':
2472: find_host = 1;
2473: rr_hostname = optarg;
2474: break;
2475: case 'H':
2476: hash_hosts = 1;
2477: break;
1.179 djm 2478: case 'I':
2479: cert_key_id = optarg;
2480: break;
1.119 djm 2481: case 'R':
2482: delete_host = 1;
2483: rr_hostname = optarg;
2484: break;
1.182 djm 2485: case 'L':
2486: show_cert = 1;
2487: break;
1.12 markus 2488: case 'l':
2489: print_fingerprint = 1;
2490: break;
1.49 markus 2491: case 'B':
2492: print_bubblebabble = 1;
2493: break;
1.193 djm 2494: case 'm':
2495: if (strcasecmp(optarg, "RFC4716") == 0 ||
2496: strcasecmp(optarg, "ssh2") == 0) {
2497: convert_format = FMT_RFC4716;
2498: break;
2499: }
2500: if (strcasecmp(optarg, "PKCS8") == 0) {
2501: convert_format = FMT_PKCS8;
2502: break;
2503: }
2504: if (strcasecmp(optarg, "PEM") == 0) {
2505: convert_format = FMT_PEM;
1.319 djm 2506: use_new_format = 0;
1.193 djm 2507: break;
2508: }
2509: fatal("Unsupported conversion format \"%s\"", optarg);
1.179 djm 2510: case 'n':
2511: cert_principals = optarg;
2512: break;
1.237 markus 2513: case 'o':
1.319 djm 2514: /* no-op; new format is already the default */
1.237 markus 2515: break;
1.12 markus 2516: case 'p':
2517: change_passphrase = 1;
2518: break;
2519: case 'c':
2520: change_comment = 1;
2521: break;
2522: case 'f':
1.274 djm 2523: if (strlcpy(identity_file, optarg,
2524: sizeof(identity_file)) >= sizeof(identity_file))
1.124 avsm 2525: fatal("Identity filename too long");
1.12 markus 2526: have_identity = 1;
2527: break;
1.105 jakob 2528: case 'g':
2529: print_generic = 1;
2530: break;
1.12 markus 2531: case 'P':
2532: identity_passphrase = optarg;
2533: break;
2534: case 'N':
2535: identity_new_passphrase = optarg;
2536: break;
1.223 djm 2537: case 'Q':
2538: check_krl = 1;
2539: break;
1.179 djm 2540: case 'O':
1.186 djm 2541: add_cert_option(optarg);
1.179 djm 2542: break;
1.237 markus 2543: case 'Z':
2544: new_format_cipher = optarg;
2545: break;
1.12 markus 2546: case 'C':
2547: identity_comment = optarg;
2548: break;
2549: case 'q':
2550: quiet = 1;
1.20 deraadt 2551: break;
1.57 markus 2552: case 'e':
1.19 markus 2553: case 'x':
1.57 markus 2554: /* export key */
1.193 djm 2555: convert_to = 1;
1.19 markus 2556: break;
1.179 djm 2557: case 'h':
2558: cert_key_type = SSH2_CERT_TYPE_HOST;
1.190 djm 2559: certflags_flags = 0;
1.179 djm 2560: break;
1.223 djm 2561: case 'k':
2562: gen_krl = 1;
2563: break;
1.57 markus 2564: case 'i':
1.19 markus 2565: case 'X':
1.57 markus 2566: /* import key */
1.193 djm 2567: convert_from = 1;
1.19 markus 2568: break;
2569: case 'y':
2570: print_public = 1;
2571: break;
1.179 djm 2572: case 's':
2573: ca_key_path = optarg;
2574: break;
1.33 markus 2575: case 't':
2576: key_type_name = optarg;
2577: break;
1.75 markus 2578: case 'D':
1.177 markus 2579: pkcs11provider = optarg;
1.305 djm 2580: break;
2581: case 'U':
2582: prefer_agent = 1;
1.66 markus 2583: break;
1.223 djm 2584: case 'u':
2585: update_krl = 1;
2586: break;
1.113 djm 2587: case 'v':
2588: if (log_level == SYSLOG_LEVEL_INFO)
2589: log_level = SYSLOG_LEVEL_DEBUG1;
2590: else {
1.117 deraadt 2591: if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
1.113 djm 2592: log_level < SYSLOG_LEVEL_DEBUG3)
2593: log_level++;
2594: }
2595: break;
1.105 jakob 2596: case 'r':
1.119 djm 2597: rr_hostname = optarg;
1.105 jakob 2598: break;
1.107 djm 2599: case 'a':
1.237 markus 2600: rounds = (int)strtonum(optarg, 1, INT_MAX, &errstr);
1.124 avsm 2601: if (errstr)
1.237 markus 2602: fatal("Invalid number: %s (%s)",
1.124 avsm 2603: optarg, errstr);
1.107 djm 2604: break;
1.274 djm 2605: case 'V':
2606: parse_cert_times(optarg);
2607: break;
2608: case 'z':
2609: errno = 0;
2610: cert_serial = strtoull(optarg, &ep, 10);
2611: if (*optarg < '0' || *optarg > '9' || *ep != '\0' ||
2612: (errno == ERANGE && cert_serial == ULLONG_MAX))
2613: fatal("Invalid serial number \"%s\"", optarg);
1.107 djm 2614: break;
1.274 djm 2615: #ifdef WITH_OPENSSL
2616: /* Moduli generation/screening */
1.107 djm 2617: case 'G':
2618: do_gen_candidates = 1;
1.124 avsm 2619: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2620: sizeof(out_file))
2621: fatal("Output filename too long");
1.107 djm 2622: break;
1.274 djm 2623: case 'J':
2624: lines_to_process = strtoul(optarg, NULL, 10);
1.292 dtucker 2625: break;
1.274 djm 2626: case 'j':
2627: start_lineno = strtoul(optarg, NULL, 10);
1.292 dtucker 2628: break;
1.211 dtucker 2629: case 'K':
1.253 deraadt 2630: if (strlen(optarg) >= PATH_MAX)
1.211 dtucker 2631: fatal("Checkpoint filename too long");
2632: checkpoint = xstrdup(optarg);
2633: break;
1.274 djm 2634: case 'M':
2635: memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX,
2636: &errstr);
2637: if (errstr)
2638: fatal("Memory limit is %s: %s", errstr, optarg);
2639: break;
1.107 djm 2640: case 'S':
2641: /* XXX - also compare length against bits */
2642: if (BN_hex2bn(&start, optarg) == 0)
2643: fatal("Invalid start point.");
2644: break;
1.274 djm 2645: case 'T':
2646: do_screen_candidates = 1;
2647: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2648: sizeof(out_file))
2649: fatal("Output filename too long");
1.186 djm 2650: break;
1.274 djm 2651: case 'W':
2652: generator_wanted = (u_int32_t)strtonum(optarg, 1,
2653: UINT_MAX, &errstr);
2654: if (errstr != NULL)
2655: fatal("Desired generator invalid: %s (%s)",
2656: optarg, errstr);
1.179 djm 2657: break;
1.274 djm 2658: #endif /* WITH_OPENSSL */
1.12 markus 2659: case '?':
2660: default:
2661: usage();
2662: }
2663: }
1.113 djm 2664:
2665: /* reinit */
1.156 deraadt 2666: log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
1.113 djm 2667:
1.179 djm 2668: argv += optind;
2669: argc -= optind;
2670:
2671: if (ca_key_path != NULL) {
1.223 djm 2672: if (argc < 1 && !gen_krl) {
1.269 djm 2673: error("Too few arguments.");
1.179 djm 2674: usage();
2675: }
1.223 djm 2676: } else if (argc > 0 && !gen_krl && !check_krl) {
1.269 djm 2677: error("Too many arguments.");
1.87 djm 2678: usage();
2679: }
1.12 markus 2680: if (change_passphrase && change_comment) {
1.269 djm 2681: error("Can only have one of -p and -c.");
1.166 djm 2682: usage();
2683: }
2684: if (print_fingerprint && (delete_host || hash_hosts)) {
1.269 djm 2685: error("Cannot use -l with -H or -R.");
1.12 markus 2686: usage();
1.223 djm 2687: }
1.246 markus 2688: #ifdef WITH_OPENSSL
1.223 djm 2689: if (gen_krl) {
2690: do_gen_krl(pw, update_krl, argc, argv);
2691: return (0);
2692: }
2693: if (check_krl) {
2694: do_check_krl(pw, argc, argv);
2695: return (0);
1.179 djm 2696: }
1.246 markus 2697: #endif
1.179 djm 2698: if (ca_key_path != NULL) {
2699: if (cert_key_id == NULL)
2700: fatal("Must specify key id (-I) when certifying");
2701: do_ca_sign(pw, argc, argv);
1.12 markus 2702: }
1.182 djm 2703: if (show_cert)
2704: do_show_cert(pw);
1.119 djm 2705: if (delete_host || hash_hosts || find_host)
2706: do_known_hosts(pw, rr_hostname);
1.221 djm 2707: if (pkcs11provider != NULL)
2708: do_download(pw);
1.49 markus 2709: if (print_fingerprint || print_bubblebabble)
1.12 markus 2710: do_fingerprint(pw);
2711: if (change_passphrase)
2712: do_change_passphrase(pw);
2713: if (change_comment)
2714: do_change_comment(pw);
1.246 markus 2715: #ifdef WITH_OPENSSL
1.193 djm 2716: if (convert_to)
2717: do_convert_to(pw);
2718: if (convert_from)
2719: do_convert_from(pw);
1.246 markus 2720: #endif
1.19 markus 2721: if (print_public)
2722: do_print_public(pw);
1.119 djm 2723: if (rr_hostname != NULL) {
1.138 jakob 2724: unsigned int n = 0;
2725:
2726: if (have_identity) {
2727: n = do_print_resource_record(pw,
2728: identity_file, rr_hostname);
1.269 djm 2729: if (n == 0)
2730: fatal("%s: %s", identity_file, strerror(errno));
1.138 jakob 2731: exit(0);
2732: } else {
2733:
2734: n += do_print_resource_record(pw,
2735: _PATH_HOST_RSA_KEY_FILE, rr_hostname);
2736: n += do_print_resource_record(pw,
2737: _PATH_HOST_DSA_KEY_FILE, rr_hostname);
1.214 djm 2738: n += do_print_resource_record(pw,
2739: _PATH_HOST_ECDSA_KEY_FILE, rr_hostname);
1.244 logan 2740: n += do_print_resource_record(pw,
2741: _PATH_HOST_ED25519_KEY_FILE, rr_hostname);
1.313 markus 2742: n += do_print_resource_record(pw,
2743: _PATH_HOST_XMSS_KEY_FILE, rr_hostname);
1.138 jakob 2744: if (n == 0)
2745: fatal("no keys found.");
2746: exit(0);
2747: }
1.105 jakob 2748: }
1.107 djm 2749:
1.274 djm 2750: #ifdef WITH_OPENSSL
1.107 djm 2751: if (do_gen_candidates) {
2752: FILE *out = fopen(out_file, "w");
1.111 djm 2753:
1.107 djm 2754: if (out == NULL) {
2755: error("Couldn't open modulus candidate file \"%s\": %s",
2756: out_file, strerror(errno));
2757: return (1);
2758: }
1.130 markus 2759: if (bits == 0)
2760: bits = DEFAULT_BITS;
1.107 djm 2761: if (gen_candidates(out, memory, bits, start) != 0)
1.131 stevesk 2762: fatal("modulus candidate generation failed");
1.107 djm 2763:
2764: return (0);
2765: }
2766:
2767: if (do_screen_candidates) {
2768: FILE *in;
1.225 djm 2769: FILE *out = fopen(out_file, "a");
1.107 djm 2770:
2771: if (have_identity && strcmp(identity_file, "-") != 0) {
2772: if ((in = fopen(identity_file, "r")) == NULL) {
2773: fatal("Couldn't open modulus candidate "
1.111 djm 2774: "file \"%s\": %s", identity_file,
1.107 djm 2775: strerror(errno));
2776: }
2777: } else
2778: in = stdin;
2779:
2780: if (out == NULL) {
2781: fatal("Couldn't open moduli file \"%s\": %s",
2782: out_file, strerror(errno));
2783: }
1.237 markus 2784: if (prime_test(in, out, rounds == 0 ? 100 : rounds,
2785: generator_wanted, checkpoint,
1.215 dtucker 2786: start_lineno, lines_to_process) != 0)
1.131 stevesk 2787: fatal("modulus screening failed");
1.108 markus 2788: return (0);
1.75 markus 2789: }
1.274 djm 2790: #endif
1.12 markus 2791:
1.206 stevesk 2792: if (gen_all_hostkeys) {
2793: do_gen_all_hostkeys(pw);
2794: return (0);
2795: }
2796:
1.133 djm 2797: if (key_type_name == NULL)
1.273 djm 2798: key_type_name = DEFAULT_KEY_TYPE_NAME;
1.133 djm 2799:
1.252 djm 2800: type = sshkey_type_from_name(key_type_name);
1.255 djm 2801: type_bits_valid(type, key_type_name, &bits);
1.206 stevesk 2802:
1.33 markus 2803: if (!quiet)
1.252 djm 2804: printf("Generating public/private %s key pair.\n",
2805: key_type_name);
1.269 djm 2806: if ((r = sshkey_generate(type, bits, &private)) != 0)
1.304 markus 2807: fatal("sshkey_generate failed");
1.269 djm 2808: if ((r = sshkey_from_private(private, &public)) != 0)
1.304 markus 2809: fatal("sshkey_from_private failed: %s\n", ssh_err(r));
1.12 markus 2810:
2811: if (!have_identity)
2812: ask_filename(pw, "Enter file in which to save the key");
2813:
1.132 djm 2814: /* Create ~/.ssh directory if it doesn't already exist. */
1.188 djm 2815: snprintf(dotsshdir, sizeof dotsshdir, "%s/%s",
2816: pw->pw_dir, _PATH_SSH_USER_DIR);
2817: if (strstr(identity_file, dotsshdir) != NULL) {
2818: if (stat(dotsshdir, &st) < 0) {
2819: if (errno != ENOENT) {
2820: error("Could not stat %s: %s", dotsshdir,
2821: strerror(errno));
2822: } else if (mkdir(dotsshdir, 0700) < 0) {
2823: error("Could not create directory '%s': %s",
2824: dotsshdir, strerror(errno));
2825: } else if (!quiet)
2826: printf("Created directory '%s'.\n", dotsshdir);
2827: }
1.12 markus 2828: }
2829: /* If the file already exists, ask the user to confirm. */
2830: if (stat(identity_file, &st) >= 0) {
2831: char yesno[3];
2832: printf("%s already exists.\n", identity_file);
2833: printf("Overwrite (y/n)? ");
2834: fflush(stdout);
2835: if (fgets(yesno, sizeof(yesno), stdin) == NULL)
2836: exit(1);
2837: if (yesno[0] != 'y' && yesno[0] != 'Y')
2838: exit(1);
2839: }
2840: /* Ask for a passphrase (twice). */
2841: if (identity_passphrase)
2842: passphrase1 = xstrdup(identity_passphrase);
2843: else if (identity_new_passphrase)
2844: passphrase1 = xstrdup(identity_new_passphrase);
2845: else {
2846: passphrase_again:
2847: passphrase1 =
1.65 markus 2848: read_passphrase("Enter passphrase (empty for no "
2849: "passphrase): ", RP_ALLOW_STDIN);
2850: passphrase2 = read_passphrase("Enter same passphrase again: ",
2851: RP_ALLOW_STDIN);
1.12 markus 2852: if (strcmp(passphrase1, passphrase2) != 0) {
1.65 markus 2853: /*
2854: * The passphrases do not match. Clear them and
2855: * retry.
2856: */
1.240 djm 2857: explicit_bzero(passphrase1, strlen(passphrase1));
2858: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 2859: free(passphrase1);
2860: free(passphrase2);
1.12 markus 2861: printf("Passphrases do not match. Try again.\n");
2862: goto passphrase_again;
2863: }
2864: /* Clear the other copy of the passphrase. */
1.240 djm 2865: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 2866: free(passphrase2);
1.12 markus 2867: }
2868:
2869: if (identity_comment) {
2870: strlcpy(comment, identity_comment, sizeof(comment));
2871: } else {
1.172 stevesk 2872: /* Create default comment field for the passphrase. */
1.12 markus 2873: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
2874: }
2875:
2876: /* Save the key with the given passphrase and comment. */
1.252 djm 2877: if ((r = sshkey_save_private(private, identity_file, passphrase1,
2878: comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 2879: error("Saving key \"%s\" failed: %s",
1.252 djm 2880: identity_file, ssh_err(r));
1.240 djm 2881: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 2882: free(passphrase1);
1.12 markus 2883: exit(1);
2884: }
2885: /* Clear the passphrase. */
1.240 djm 2886: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 2887: free(passphrase1);
1.12 markus 2888:
2889: /* Clear the private key and the random number generator. */
1.252 djm 2890: sshkey_free(private);
1.12 markus 2891:
2892: if (!quiet)
2893: printf("Your identification has been saved in %s.\n", identity_file);
2894:
2895: strlcat(identity_file, ".pub", sizeof(identity_file));
1.269 djm 2896: if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
2897: fatal("Unable to save public key to %s: %s",
2898: identity_file, strerror(errno));
2899: if ((f = fdopen(fd, "w")) == NULL)
2900: fatal("fdopen %s failed: %s", identity_file, strerror(errno));
1.252 djm 2901: if ((r = sshkey_write(public, f)) != 0)
1.269 djm 2902: error("write key failed: %s", ssh_err(r));
1.19 markus 2903: fprintf(f, " %s\n", comment);
1.311 djm 2904: if (ferror(f) || fclose(f) != 0)
2905: fatal("write public failed: %s", strerror(errno));
1.12 markus 2906:
2907: if (!quiet) {
1.259 djm 2908: fp = sshkey_fingerprint(public, fingerprint_hash,
1.251 djm 2909: SSH_FP_DEFAULT);
1.259 djm 2910: ra = sshkey_fingerprint(public, fingerprint_hash,
1.167 grunk 2911: SSH_FP_RANDOMART);
1.259 djm 2912: if (fp == NULL || ra == NULL)
2913: fatal("sshkey_fingerprint failed");
1.19 markus 2914: printf("Your public key has been saved in %s.\n",
2915: identity_file);
1.12 markus 2916: printf("The key fingerprint is:\n");
1.50 markus 2917: printf("%s %s\n", fp, comment);
1.167 grunk 2918: printf("The key's randomart image is:\n");
2919: printf("%s\n", ra);
1.227 djm 2920: free(ra);
2921: free(fp);
1.12 markus 2922: }
1.19 markus 2923:
1.252 djm 2924: sshkey_free(public);
1.12 markus 2925: exit(0);
1.1 deraadt 2926: }
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