Annotation of src/usr.bin/ssh/ssh-keygen.c, Revision 1.325
1.325 ! djm 1: /* $OpenBSD: ssh-keygen.c,v 1.324 2019/01/22 20:48:01 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
1.1 deraadt 67:
1.325 ! djm 68: static int quiet = 0;
1.182 djm 69:
1.8 markus 70: /* Flag indicating that we just want to see the key fingerprint */
1.325 ! djm 71: static int print_fingerprint = 0;
! 72: static int print_bubblebabble = 0;
1.8 markus 73:
1.251 djm 74: /* Hash algorithm to use for fingerprints. */
1.325 ! djm 75: static int fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.251 djm 76:
1.10 markus 77: /* The identity file name, given on the command line or entered by the user. */
1.325 ! djm 78: static char identity_file[1024];
! 79: static int have_identity = 0;
1.1 deraadt 80:
81: /* This is set to the passphrase if given on the command line. */
1.325 ! djm 82: static char *identity_passphrase = NULL;
1.1 deraadt 83:
84: /* This is set to the new passphrase if given on the command line. */
1.325 ! djm 85: static char *identity_new_passphrase = NULL;
1.186 djm 86:
1.179 djm 87: /* Key type when certifying */
1.325 ! djm 88: static u_int cert_key_type = SSH2_CERT_TYPE_USER;
1.179 djm 89:
90: /* "key ID" of signed key */
1.325 ! djm 91: static char *cert_key_id = NULL;
1.179 djm 92:
93: /* Comma-separated list of principal names for certifying keys */
1.325 ! djm 94: static char *cert_principals = NULL;
1.179 djm 95:
96: /* Validity period for certificates */
1.325 ! djm 97: static u_int64_t cert_valid_from = 0;
! 98: static u_int64_t cert_valid_to = ~0ULL;
1.179 djm 99:
1.186 djm 100: /* Certificate options */
1.190 djm 101: #define CERTOPT_X_FWD (1)
102: #define CERTOPT_AGENT_FWD (1<<1)
103: #define CERTOPT_PORT_FWD (1<<2)
104: #define CERTOPT_PTY (1<<3)
105: #define CERTOPT_USER_RC (1<<4)
106: #define CERTOPT_DEFAULT (CERTOPT_X_FWD|CERTOPT_AGENT_FWD| \
107: CERTOPT_PORT_FWD|CERTOPT_PTY|CERTOPT_USER_RC)
1.325 ! djm 108: static u_int32_t certflags_flags = CERTOPT_DEFAULT;
! 109: static char *certflags_command = NULL;
! 110: static char *certflags_src_addr = NULL;
1.179 djm 111:
1.300 djm 112: /* Arbitrary extensions specified by user */
113: struct cert_userext {
114: char *key;
115: char *val;
116: int crit;
117: };
1.325 ! djm 118: static struct cert_userext *cert_userext;
! 119: static size_t ncert_userext;
1.300 djm 120:
1.193 djm 121: /* Conversion to/from various formats */
122: enum {
123: FMT_RFC4716,
124: FMT_PKCS8,
125: FMT_PEM
126: } convert_format = FMT_RFC4716;
1.33 markus 127:
1.325 ! djm 128: static char *key_type_name = NULL;
1.19 markus 129:
1.197 djm 130: /* Load key from this PKCS#11 provider */
1.325 ! djm 131: static char *pkcs11provider = NULL;
1.193 djm 132:
1.237 markus 133: /* Use new OpenSSH private key format when writing SSH2 keys instead of PEM */
1.325 ! djm 134: static int use_new_format = 1;
1.237 markus 135:
136: /* Cipher for new-format private keys */
1.325 ! djm 137: static char *new_format_cipher = NULL;
1.237 markus 138:
139: /*
140: * Number of KDF rounds to derive new format keys /
141: * number of primality trials when screening moduli.
142: */
1.325 ! djm 143: static int rounds = 0;
1.237 markus 144:
1.10 markus 145: /* argv0 */
146: extern char *__progname;
1.1 deraadt 147:
1.325 ! djm 148: static char hostname[NI_MAXHOST];
1.19 markus 149:
1.274 djm 150: #ifdef WITH_OPENSSL
1.115 djm 151: /* moduli.c */
1.124 avsm 152: int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *);
1.215 dtucker 153: int prime_test(FILE *, FILE *, u_int32_t, u_int32_t, char *, unsigned long,
154: unsigned long);
1.274 djm 155: #endif
1.115 djm 156:
1.63 itojun 157: static void
1.255 djm 158: type_bits_valid(int type, const char *name, u_int32_t *bitsp)
1.206 stevesk 159: {
1.271 djm 160: #ifdef WITH_OPENSSL
1.255 djm 161: u_int maxbits, nid;
1.271 djm 162: #endif
1.206 stevesk 163:
1.269 djm 164: if (type == KEY_UNSPEC)
165: fatal("unknown key type %s", key_type_name);
1.209 djm 166: if (*bitsp == 0) {
1.271 djm 167: #ifdef WITH_OPENSSL
1.206 stevesk 168: if (type == KEY_DSA)
1.209 djm 169: *bitsp = DEFAULT_BITS_DSA;
1.255 djm 170: else if (type == KEY_ECDSA) {
171: if (name != NULL &&
172: (nid = sshkey_ecdsa_nid_from_name(name)) > 0)
173: *bitsp = sshkey_curve_nid_to_bits(nid);
174: if (*bitsp == 0)
175: *bitsp = DEFAULT_BITS_ECDSA;
1.291 dtucker 176: } else
1.271 djm 177: #endif
1.209 djm 178: *bitsp = DEFAULT_BITS;
1.206 stevesk 179: }
1.271 djm 180: #ifdef WITH_OPENSSL
1.206 stevesk 181: maxbits = (type == KEY_DSA) ?
182: OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS;
1.269 djm 183: if (*bitsp > maxbits)
184: fatal("key bits exceeds maximum %d", maxbits);
1.303 djm 185: switch (type) {
186: case KEY_DSA:
187: if (*bitsp != 1024)
188: fatal("Invalid DSA key length: must be 1024 bits");
189: break;
190: case KEY_RSA:
191: if (*bitsp < SSH_RSA_MINIMUM_MODULUS_SIZE)
192: fatal("Invalid RSA key length: minimum is %d bits",
193: SSH_RSA_MINIMUM_MODULUS_SIZE);
194: break;
195: case KEY_ECDSA:
196: if (sshkey_ecdsa_bits_to_nid(*bitsp) == -1)
197: fatal("Invalid ECDSA key length: valid lengths are "
198: "256, 384 or 521 bits");
199: }
1.246 markus 200: #endif
1.206 stevesk 201: }
202:
203: static void
1.10 markus 204: ask_filename(struct passwd *pw, const char *prompt)
1.1 deraadt 205: {
1.12 markus 206: char buf[1024];
1.35 markus 207: char *name = NULL;
208:
1.92 stevesk 209: if (key_type_name == NULL)
1.40 markus 210: name = _PATH_SSH_CLIENT_ID_RSA;
1.140 deraadt 211: else {
1.252 djm 212: switch (sshkey_type_from_name(key_type_name)) {
1.186 djm 213: case KEY_DSA_CERT:
1.92 stevesk 214: case KEY_DSA:
215: name = _PATH_SSH_CLIENT_ID_DSA;
216: break;
1.200 djm 217: case KEY_ECDSA_CERT:
218: case KEY_ECDSA:
219: name = _PATH_SSH_CLIENT_ID_ECDSA;
220: break;
1.186 djm 221: case KEY_RSA_CERT:
1.92 stevesk 222: case KEY_RSA:
223: name = _PATH_SSH_CLIENT_ID_RSA;
224: break;
1.238 markus 225: case KEY_ED25519:
226: case KEY_ED25519_CERT:
227: name = _PATH_SSH_CLIENT_ID_ED25519;
228: break;
1.313 markus 229: case KEY_XMSS:
230: case KEY_XMSS_CERT:
231: name = _PATH_SSH_CLIENT_ID_XMSS;
232: break;
1.92 stevesk 233: default:
1.269 djm 234: fatal("bad key type");
1.92 stevesk 235: }
1.140 deraadt 236: }
1.269 djm 237: snprintf(identity_file, sizeof(identity_file),
238: "%s/%s", pw->pw_dir, name);
239: printf("%s (%s): ", prompt, identity_file);
240: fflush(stdout);
1.12 markus 241: if (fgets(buf, sizeof(buf), stdin) == NULL)
242: exit(1);
1.162 gilles 243: buf[strcspn(buf, "\n")] = '\0';
1.12 markus 244: if (strcmp(buf, "") != 0)
245: strlcpy(identity_file, buf, sizeof(identity_file));
246: have_identity = 1;
1.7 markus 247: }
248:
1.252 djm 249: static struct sshkey *
1.61 markus 250: load_identity(char *filename)
1.19 markus 251: {
1.52 markus 252: char *pass;
1.252 djm 253: struct sshkey *prv;
254: int r;
1.52 markus 255:
1.252 djm 256: if ((r = sshkey_load_private(filename, "", &prv, NULL)) == 0)
257: return prv;
258: if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
259: fatal("Load key \"%s\": %s", filename, ssh_err(r));
260: if (identity_passphrase)
261: pass = xstrdup(identity_passphrase);
262: else
263: pass = read_passphrase("Enter passphrase: ", RP_ALLOW_STDIN);
264: r = sshkey_load_private(filename, pass, &prv, NULL);
265: explicit_bzero(pass, strlen(pass));
266: free(pass);
267: if (r != 0)
268: fatal("Load key \"%s\": %s", filename, ssh_err(r));
1.52 markus 269: return prv;
1.19 markus 270: }
271:
1.32 markus 272: #define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
1.100 deraadt 273: #define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
1.32 markus 274: #define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
1.42 stevesk 275: #define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
1.19 markus 276:
1.246 markus 277: #ifdef WITH_OPENSSL
1.63 itojun 278: static void
1.252 djm 279: do_convert_to_ssh2(struct passwd *pw, struct sshkey *k)
1.19 markus 280: {
1.252 djm 281: size_t len;
1.36 markus 282: u_char *blob;
1.176 djm 283: char comment[61];
1.252 djm 284: int r;
1.19 markus 285:
1.269 djm 286: if ((r = sshkey_to_blob(k, &blob, &len)) != 0)
287: fatal("key_to_blob failed: %s", ssh_err(r));
1.176 djm 288: /* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
289: snprintf(comment, sizeof(comment),
290: "%u-bit %s, converted by %s@%s from OpenSSH",
1.252 djm 291: sshkey_size(k), sshkey_type(k),
1.19 markus 292: pw->pw_name, hostname);
1.176 djm 293:
294: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
295: fprintf(stdout, "Comment: \"%s\"\n", comment);
1.19 markus 296: dump_base64(stdout, blob, len);
1.32 markus 297: fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
1.252 djm 298: sshkey_free(k);
1.227 djm 299: free(blob);
1.19 markus 300: exit(0);
301: }
302:
1.63 itojun 303: static void
1.252 djm 304: do_convert_to_pkcs8(struct sshkey *k)
1.193 djm 305: {
1.252 djm 306: switch (sshkey_type_plain(k->type)) {
1.193 djm 307: case KEY_RSA:
308: if (!PEM_write_RSA_PUBKEY(stdout, k->rsa))
309: fatal("PEM_write_RSA_PUBKEY failed");
310: break;
311: case KEY_DSA:
312: if (!PEM_write_DSA_PUBKEY(stdout, k->dsa))
313: fatal("PEM_write_DSA_PUBKEY failed");
314: break;
1.200 djm 315: case KEY_ECDSA:
316: if (!PEM_write_EC_PUBKEY(stdout, k->ecdsa))
317: fatal("PEM_write_EC_PUBKEY failed");
318: break;
1.193 djm 319: default:
1.252 djm 320: fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
1.193 djm 321: }
322: exit(0);
323: }
324:
325: static void
1.252 djm 326: do_convert_to_pem(struct sshkey *k)
1.193 djm 327: {
1.252 djm 328: switch (sshkey_type_plain(k->type)) {
1.193 djm 329: case KEY_RSA:
330: if (!PEM_write_RSAPublicKey(stdout, k->rsa))
331: fatal("PEM_write_RSAPublicKey failed");
332: break;
333: default:
1.252 djm 334: fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
1.193 djm 335: }
336: exit(0);
337: }
338:
339: static void
340: do_convert_to(struct passwd *pw)
341: {
1.252 djm 342: struct sshkey *k;
1.193 djm 343: struct stat st;
1.252 djm 344: int r;
1.193 djm 345:
346: if (!have_identity)
347: ask_filename(pw, "Enter file in which the key is");
348: if (stat(identity_file, &st) < 0)
349: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.252 djm 350: if ((r = sshkey_load_public(identity_file, &k, NULL)) != 0)
351: k = load_identity(identity_file);
1.193 djm 352: switch (convert_format) {
353: case FMT_RFC4716:
354: do_convert_to_ssh2(pw, k);
355: break;
356: case FMT_PKCS8:
357: do_convert_to_pkcs8(k);
358: break;
359: case FMT_PEM:
360: do_convert_to_pem(k);
361: break;
362: default:
363: fatal("%s: unknown key format %d", __func__, convert_format);
364: }
365: exit(0);
366: }
367:
1.252 djm 368: /*
369: * This is almost exactly the bignum1 encoding, but with 32 bit for length
370: * instead of 16.
371: */
1.193 djm 372: static void
1.252 djm 373: buffer_get_bignum_bits(struct sshbuf *b, BIGNUM *value)
1.32 markus 374: {
1.252 djm 375: u_int bytes, bignum_bits;
376: int r;
1.53 markus 377:
1.252 djm 378: if ((r = sshbuf_get_u32(b, &bignum_bits)) != 0)
379: fatal("%s: buffer error: %s", __func__, ssh_err(r));
380: bytes = (bignum_bits + 7) / 8;
381: if (sshbuf_len(b) < bytes)
382: fatal("%s: input buffer too small: need %d have %zu",
383: __func__, bytes, sshbuf_len(b));
384: if (BN_bin2bn(sshbuf_ptr(b), bytes, value) == NULL)
385: fatal("%s: BN_bin2bn failed", __func__);
386: if ((r = sshbuf_consume(b, bytes)) != 0)
387: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.32 markus 388: }
389:
1.252 djm 390: static struct sshkey *
1.93 markus 391: do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
1.32 markus 392: {
1.252 djm 393: struct sshbuf *b;
394: struct sshkey *key = NULL;
1.64 markus 395: char *type, *cipher;
1.252 djm 396: u_char e1, e2, e3, *sig = NULL, data[] = "abcde12345";
397: int r, rlen, ktype;
398: u_int magic, i1, i2, i3, i4;
399: size_t slen;
1.62 markus 400: u_long e;
1.321 djm 401: BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;
402: BIGNUM *dsa_pub_key = NULL, *dsa_priv_key = NULL;
403: BIGNUM *rsa_n = NULL, *rsa_e = NULL, *rsa_d = NULL;
404: BIGNUM *rsa_p = NULL, *rsa_q = NULL, *rsa_iqmp = NULL;
1.252 djm 405: if ((b = sshbuf_from(blob, blen)) == NULL)
406: fatal("%s: sshbuf_from failed", __func__);
407: if ((r = sshbuf_get_u32(b, &magic)) != 0)
408: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.32 markus 409:
410: if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
1.252 djm 411: error("bad magic 0x%x != 0x%x", magic,
412: SSH_COM_PRIVATE_KEY_MAGIC);
413: sshbuf_free(b);
1.32 markus 414: return NULL;
415: }
1.252 djm 416: if ((r = sshbuf_get_u32(b, &i1)) != 0 ||
417: (r = sshbuf_get_cstring(b, &type, NULL)) != 0 ||
418: (r = sshbuf_get_cstring(b, &cipher, NULL)) != 0 ||
419: (r = sshbuf_get_u32(b, &i2)) != 0 ||
420: (r = sshbuf_get_u32(b, &i3)) != 0 ||
421: (r = sshbuf_get_u32(b, &i4)) != 0)
422: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.158 stevesk 423: debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
1.32 markus 424: if (strcmp(cipher, "none") != 0) {
425: error("unsupported cipher %s", cipher);
1.227 djm 426: free(cipher);
1.252 djm 427: sshbuf_free(b);
1.227 djm 428: free(type);
1.32 markus 429: return NULL;
430: }
1.227 djm 431: free(cipher);
1.32 markus 432:
1.53 markus 433: if (strstr(type, "dsa")) {
434: ktype = KEY_DSA;
435: } else if (strstr(type, "rsa")) {
436: ktype = KEY_RSA;
437: } else {
1.252 djm 438: sshbuf_free(b);
1.227 djm 439: free(type);
1.32 markus 440: return NULL;
441: }
1.322 djm 442: if ((key = sshkey_new(ktype)) == NULL)
443: fatal("sshkey_new failed");
1.227 djm 444: free(type);
1.53 markus 445:
446: switch (key->type) {
447: case KEY_DSA:
1.321 djm 448: if ((dsa_p = BN_new()) == NULL ||
449: (dsa_q = BN_new()) == NULL ||
450: (dsa_g = BN_new()) == NULL ||
451: (dsa_pub_key = BN_new()) == NULL ||
452: (dsa_priv_key = BN_new()) == NULL)
453: fatal("%s: BN_new", __func__);
454: buffer_get_bignum_bits(b, dsa_p);
455: buffer_get_bignum_bits(b, dsa_g);
456: buffer_get_bignum_bits(b, dsa_q);
457: buffer_get_bignum_bits(b, dsa_pub_key);
458: buffer_get_bignum_bits(b, dsa_priv_key);
459: if (!DSA_set0_pqg(key->dsa, dsa_p, dsa_q, dsa_g))
460: fatal("%s: DSA_set0_pqg failed", __func__);
461: dsa_p = dsa_q = dsa_g = NULL; /* transferred */
462: if (!DSA_set0_key(key->dsa, dsa_pub_key, dsa_priv_key))
463: fatal("%s: DSA_set0_key failed", __func__);
464: dsa_pub_key = dsa_priv_key = NULL; /* transferred */
1.53 markus 465: break;
466: case KEY_RSA:
1.252 djm 467: if ((r = sshbuf_get_u8(b, &e1)) != 0 ||
468: (e1 < 30 && (r = sshbuf_get_u8(b, &e2)) != 0) ||
469: (e1 < 30 && (r = sshbuf_get_u8(b, &e3)) != 0))
470: fatal("%s: buffer error: %s", __func__, ssh_err(r));
471: e = e1;
1.62 markus 472: debug("e %lx", e);
473: if (e < 30) {
474: e <<= 8;
1.252 djm 475: e += e2;
1.62 markus 476: debug("e %lx", e);
477: e <<= 8;
1.252 djm 478: e += e3;
1.62 markus 479: debug("e %lx", e);
480: }
1.321 djm 481: if ((rsa_e = BN_new()) == NULL)
482: fatal("%s: BN_new", __func__);
483: if (!BN_set_word(rsa_e, e)) {
484: BN_clear_free(rsa_e);
1.252 djm 485: sshbuf_free(b);
486: sshkey_free(key);
1.53 markus 487: return NULL;
488: }
1.321 djm 489: if ((rsa_n = BN_new()) == NULL ||
490: (rsa_d = BN_new()) == NULL ||
491: (rsa_p = BN_new()) == NULL ||
492: (rsa_q = BN_new()) == NULL ||
493: (rsa_iqmp = BN_new()) == NULL)
494: fatal("%s: BN_new", __func__);
495: buffer_get_bignum_bits(b, rsa_d);
496: buffer_get_bignum_bits(b, rsa_n);
497: buffer_get_bignum_bits(b, rsa_iqmp);
498: buffer_get_bignum_bits(b, rsa_q);
499: buffer_get_bignum_bits(b, rsa_p);
500: if (!RSA_set0_key(key->rsa, rsa_n, rsa_e, rsa_d))
501: fatal("%s: RSA_set0_key failed", __func__);
502: rsa_n = rsa_e = rsa_d = NULL; /* transferred */
503: if (!RSA_set0_factors(key->rsa, rsa_p, rsa_q))
504: fatal("%s: RSA_set0_factors failed", __func__);
505: rsa_p = rsa_q = NULL; /* transferred */
506: if ((r = ssh_rsa_complete_crt_parameters(key, rsa_iqmp)) != 0)
1.252 djm 507: fatal("generate RSA parameters failed: %s", ssh_err(r));
1.321 djm 508: BN_clear_free(rsa_iqmp);
1.53 markus 509: break;
510: }
1.252 djm 511: rlen = sshbuf_len(b);
1.85 deraadt 512: if (rlen != 0)
1.53 markus 513: error("do_convert_private_ssh2_from_blob: "
514: "remaining bytes in key blob %d", rlen);
1.252 djm 515: sshbuf_free(b);
1.64 markus 516:
517: /* try the key */
1.285 markus 518: if (sshkey_sign(key, &sig, &slen, data, sizeof(data), NULL, 0) != 0 ||
1.309 djm 519: sshkey_verify(key, sig, slen, data, sizeof(data), NULL, 0) != 0) {
1.252 djm 520: sshkey_free(key);
521: free(sig);
522: return NULL;
523: }
1.227 djm 524: free(sig);
1.32 markus 525: return key;
526: }
527:
1.137 dtucker 528: static int
529: get_line(FILE *fp, char *line, size_t len)
530: {
531: int c;
532: size_t pos = 0;
533:
534: line[0] = '\0';
535: while ((c = fgetc(fp)) != EOF) {
1.269 djm 536: if (pos >= len - 1)
537: fatal("input line too long.");
1.140 deraadt 538: switch (c) {
1.137 dtucker 539: case '\r':
540: c = fgetc(fp);
1.269 djm 541: if (c != EOF && c != '\n' && ungetc(c, fp) == EOF)
542: fatal("unget: %s", strerror(errno));
1.137 dtucker 543: return pos;
544: case '\n':
545: return pos;
546: }
547: line[pos++] = c;
548: line[pos] = '\0';
549: }
1.157 stevesk 550: /* We reached EOF */
551: return -1;
1.137 dtucker 552: }
553:
1.63 itojun 554: static void
1.252 djm 555: do_convert_from_ssh2(struct passwd *pw, struct sshkey **k, int *private)
1.19 markus 556: {
1.252 djm 557: int r, blen, escaped = 0;
1.98 markus 558: u_int len;
1.137 dtucker 559: char line[1024];
1.80 stevesk 560: u_char blob[8096];
1.19 markus 561: char encoded[8096];
562: FILE *fp;
563:
1.191 djm 564: if ((fp = fopen(identity_file, "r")) == NULL)
565: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
1.19 markus 566: encoded[0] = '\0';
1.137 dtucker 567: while ((blen = get_line(fp, line, sizeof(line))) != -1) {
1.228 djm 568: if (blen > 0 && line[blen - 1] == '\\')
1.25 markus 569: escaped++;
1.19 markus 570: if (strncmp(line, "----", 4) == 0 ||
571: strstr(line, ": ") != NULL) {
1.32 markus 572: if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
1.193 djm 573: *private = 1;
1.64 markus 574: if (strstr(line, " END ") != NULL) {
575: break;
576: }
1.60 markus 577: /* fprintf(stderr, "ignore: %s", line); */
1.19 markus 578: continue;
579: }
1.25 markus 580: if (escaped) {
581: escaped--;
1.60 markus 582: /* fprintf(stderr, "escaped: %s", line); */
1.25 markus 583: continue;
1.19 markus 584: }
585: strlcat(encoded, line, sizeof(encoded));
586: }
1.98 markus 587: len = strlen(encoded);
588: if (((len % 4) == 3) &&
589: (encoded[len-1] == '=') &&
590: (encoded[len-2] == '=') &&
591: (encoded[len-3] == '='))
592: encoded[len-3] = '\0';
1.91 stevesk 593: blen = uudecode(encoded, blob, sizeof(blob));
1.269 djm 594: if (blen < 0)
595: fatal("uudecode failed.");
1.252 djm 596: if (*private)
597: *k = do_convert_private_ssh2_from_blob(blob, blen);
1.269 djm 598: else if ((r = sshkey_from_blob(blob, blen, k)) != 0)
599: fatal("decode blob failed: %s", ssh_err(r));
1.193 djm 600: fclose(fp);
601: }
602:
603: static void
1.252 djm 604: do_convert_from_pkcs8(struct sshkey **k, int *private)
1.193 djm 605: {
606: EVP_PKEY *pubkey;
607: FILE *fp;
608:
609: if ((fp = fopen(identity_file, "r")) == NULL)
610: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
611: if ((pubkey = PEM_read_PUBKEY(fp, NULL, NULL, NULL)) == NULL) {
612: fatal("%s: %s is not a recognised public key format", __func__,
613: identity_file);
614: }
615: fclose(fp);
1.321 djm 616: switch (EVP_PKEY_base_id(pubkey)) {
1.193 djm 617: case EVP_PKEY_RSA:
1.252 djm 618: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
619: fatal("sshkey_new failed");
1.193 djm 620: (*k)->type = KEY_RSA;
621: (*k)->rsa = EVP_PKEY_get1_RSA(pubkey);
622: break;
623: case EVP_PKEY_DSA:
1.252 djm 624: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
625: fatal("sshkey_new failed");
1.193 djm 626: (*k)->type = KEY_DSA;
627: (*k)->dsa = EVP_PKEY_get1_DSA(pubkey);
628: break;
1.200 djm 629: case EVP_PKEY_EC:
1.252 djm 630: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
631: fatal("sshkey_new failed");
1.200 djm 632: (*k)->type = KEY_ECDSA;
633: (*k)->ecdsa = EVP_PKEY_get1_EC_KEY(pubkey);
1.252 djm 634: (*k)->ecdsa_nid = sshkey_ecdsa_key_to_nid((*k)->ecdsa);
1.200 djm 635: break;
1.193 djm 636: default:
637: fatal("%s: unsupported pubkey type %d", __func__,
1.321 djm 638: EVP_PKEY_base_id(pubkey));
1.193 djm 639: }
640: EVP_PKEY_free(pubkey);
641: return;
642: }
643:
644: static void
1.252 djm 645: do_convert_from_pem(struct sshkey **k, int *private)
1.193 djm 646: {
647: FILE *fp;
648: RSA *rsa;
649:
650: if ((fp = fopen(identity_file, "r")) == NULL)
651: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
652: if ((rsa = PEM_read_RSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
1.252 djm 653: if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
654: fatal("sshkey_new failed");
1.193 djm 655: (*k)->type = KEY_RSA;
656: (*k)->rsa = rsa;
657: fclose(fp);
658: return;
659: }
660: fatal("%s: unrecognised raw private key format", __func__);
661: }
662:
663: static void
664: do_convert_from(struct passwd *pw)
665: {
1.252 djm 666: struct sshkey *k = NULL;
667: int r, private = 0, ok = 0;
1.193 djm 668: struct stat st;
669:
670: if (!have_identity)
671: ask_filename(pw, "Enter file in which the key is");
672: if (stat(identity_file, &st) < 0)
673: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
674:
675: switch (convert_format) {
676: case FMT_RFC4716:
677: do_convert_from_ssh2(pw, &k, &private);
678: break;
679: case FMT_PKCS8:
680: do_convert_from_pkcs8(&k, &private);
681: break;
682: case FMT_PEM:
683: do_convert_from_pem(&k, &private);
684: break;
685: default:
686: fatal("%s: unknown key format %d", __func__, convert_format);
687: }
688:
1.260 djm 689: if (!private) {
1.252 djm 690: if ((r = sshkey_write(k, stdout)) == 0)
691: ok = 1;
1.193 djm 692: if (ok)
693: fprintf(stdout, "\n");
1.260 djm 694: } else {
1.193 djm 695: switch (k->type) {
696: case KEY_DSA:
697: ok = PEM_write_DSAPrivateKey(stdout, k->dsa, NULL,
698: NULL, 0, NULL, NULL);
699: break;
1.200 djm 700: case KEY_ECDSA:
701: ok = PEM_write_ECPrivateKey(stdout, k->ecdsa, NULL,
702: NULL, 0, NULL, NULL);
703: break;
1.193 djm 704: case KEY_RSA:
705: ok = PEM_write_RSAPrivateKey(stdout, k->rsa, NULL,
706: NULL, 0, NULL, NULL);
707: break;
708: default:
709: fatal("%s: unsupported key type %s", __func__,
1.252 djm 710: sshkey_type(k));
1.193 djm 711: }
712: }
713:
1.269 djm 714: if (!ok)
715: fatal("key write failed");
1.252 djm 716: sshkey_free(k);
1.19 markus 717: exit(0);
718: }
1.246 markus 719: #endif
1.19 markus 720:
1.63 itojun 721: static void
1.19 markus 722: do_print_public(struct passwd *pw)
723: {
1.252 djm 724: struct sshkey *prv;
1.19 markus 725: struct stat st;
1.252 djm 726: int r;
1.19 markus 727:
728: if (!have_identity)
729: ask_filename(pw, "Enter file in which the key is");
1.269 djm 730: if (stat(identity_file, &st) < 0)
731: fatal("%s: %s", identity_file, strerror(errno));
1.61 markus 732: prv = load_identity(identity_file);
1.252 djm 733: if ((r = sshkey_write(prv, stdout)) != 0)
1.304 markus 734: error("sshkey_write failed: %s", ssh_err(r));
1.252 djm 735: sshkey_free(prv);
1.19 markus 736: fprintf(stdout, "\n");
737: exit(0);
738: }
739:
1.66 markus 740: static void
1.197 djm 741: do_download(struct passwd *pw)
1.75 markus 742: {
1.177 markus 743: #ifdef ENABLE_PKCS11
1.252 djm 744: struct sshkey **keys = NULL;
1.177 markus 745: int i, nkeys;
1.252 djm 746: enum sshkey_fp_rep rep;
1.251 djm 747: int fptype;
1.221 djm 748: char *fp, *ra;
1.222 djm 749:
1.251 djm 750: fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
751: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
1.75 markus 752:
1.177 markus 753: pkcs11_init(0);
754: nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys);
755: if (nkeys <= 0)
756: fatal("cannot read public key from pkcs11");
757: for (i = 0; i < nkeys; i++) {
1.221 djm 758: if (print_fingerprint) {
1.252 djm 759: fp = sshkey_fingerprint(keys[i], fptype, rep);
760: ra = sshkey_fingerprint(keys[i], fingerprint_hash,
1.221 djm 761: SSH_FP_RANDOMART);
1.259 djm 762: if (fp == NULL || ra == NULL)
763: fatal("%s: sshkey_fingerprint fail", __func__);
1.252 djm 764: printf("%u %s %s (PKCS11 key)\n", sshkey_size(keys[i]),
765: fp, sshkey_type(keys[i]));
1.325 ! djm 766: if (log_level_get() >= SYSLOG_LEVEL_VERBOSE)
1.221 djm 767: printf("%s\n", ra);
1.227 djm 768: free(ra);
769: free(fp);
1.221 djm 770: } else {
1.252 djm 771: (void) sshkey_write(keys[i], stdout); /* XXX check */
1.221 djm 772: fprintf(stdout, "\n");
773: }
1.252 djm 774: sshkey_free(keys[i]);
1.97 markus 775: }
1.227 djm 776: free(keys);
1.177 markus 777: pkcs11_terminate();
1.75 markus 778: exit(0);
1.177 markus 779: #else
780: fatal("no pkcs11 support");
781: #endif /* ENABLE_PKCS11 */
1.75 markus 782: }
1.66 markus 783:
1.279 djm 784: static struct sshkey *
785: try_read_key(char **cpp)
786: {
787: struct sshkey *ret;
788: int r;
789:
790: if ((ret = sshkey_new(KEY_UNSPEC)) == NULL)
791: fatal("sshkey_new failed");
792: if ((r = sshkey_read(ret, cpp)) == 0)
793: return ret;
794: /* Not a key */
795: sshkey_free(ret);
796: return NULL;
797: }
798:
1.63 itojun 799: static void
1.279 djm 800: fingerprint_one_key(const struct sshkey *public, const char *comment)
1.8 markus 801: {
1.279 djm 802: char *fp = NULL, *ra = NULL;
1.252 djm 803: enum sshkey_fp_rep rep;
1.251 djm 804: int fptype;
1.12 markus 805:
1.251 djm 806: fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
807: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
1.279 djm 808: fp = sshkey_fingerprint(public, fptype, rep);
809: ra = sshkey_fingerprint(public, fingerprint_hash, SSH_FP_RANDOMART);
810: if (fp == NULL || ra == NULL)
811: fatal("%s: sshkey_fingerprint failed", __func__);
1.294 djm 812: mprintf("%u %s %s (%s)\n", sshkey_size(public), fp,
1.279 djm 813: comment ? comment : "no comment", sshkey_type(public));
1.325 ! djm 814: if (log_level_get() >= SYSLOG_LEVEL_VERBOSE)
1.279 djm 815: printf("%s\n", ra);
816: free(ra);
817: free(fp);
818: }
819:
820: static void
821: fingerprint_private(const char *path)
822: {
823: struct stat st;
824: char *comment = NULL;
825: struct sshkey *public = NULL;
826: int r;
827:
828: if (stat(identity_file, &st) < 0)
829: fatal("%s: %s", path, strerror(errno));
1.280 djm 830: if ((r = sshkey_load_public(path, &public, &comment)) != 0) {
831: debug("load public \"%s\": %s", path, ssh_err(r));
832: if ((r = sshkey_load_private(path, NULL,
833: &public, &comment)) != 0) {
834: debug("load private \"%s\": %s", path, ssh_err(r));
835: fatal("%s is not a key file.", path);
836: }
837: }
838:
1.279 djm 839: fingerprint_one_key(public, comment);
840: sshkey_free(public);
841: free(comment);
842: }
843:
844: static void
845: do_fingerprint(struct passwd *pw)
846: {
847: FILE *f;
848: struct sshkey *public = NULL;
1.317 markus 849: char *comment = NULL, *cp, *ep, *line = NULL;
850: size_t linesize = 0;
1.279 djm 851: int i, invalid = 1;
852: const char *path;
1.289 djm 853: u_long lnum = 0;
1.279 djm 854:
1.12 markus 855: if (!have_identity)
856: ask_filename(pw, "Enter file in which the key is");
1.279 djm 857: path = identity_file;
1.15 markus 858:
1.279 djm 859: if (strcmp(identity_file, "-") == 0) {
860: f = stdin;
861: path = "(stdin)";
862: } else if ((f = fopen(path, "r")) == NULL)
863: fatal("%s: %s: %s", __progname, path, strerror(errno));
864:
1.317 markus 865: while (getline(&line, &linesize, f) != -1) {
866: lnum++;
1.279 djm 867: cp = line;
868: cp[strcspn(cp, "\n")] = '\0';
869: /* Trim leading space and comments */
870: cp = line + strspn(line, " \t");
871: if (*cp == '#' || *cp == '\0')
872: continue;
1.191 djm 873:
1.279 djm 874: /*
875: * Input may be plain keys, private keys, authorized_keys
876: * or known_hosts.
877: */
878:
879: /*
880: * Try private keys first. Assume a key is private if
881: * "SSH PRIVATE KEY" appears on the first line and we're
882: * not reading from stdin (XXX support private keys on stdin).
883: */
884: if (lnum == 1 && strcmp(identity_file, "-") != 0 &&
1.280 djm 885: strstr(cp, "PRIVATE KEY") != NULL) {
1.317 markus 886: free(line);
1.279 djm 887: fclose(f);
888: fingerprint_private(path);
889: exit(0);
890: }
891:
892: /*
893: * If it's not a private key, then this must be prepared to
894: * accept a public key prefixed with a hostname or options.
895: * Try a bare key first, otherwise skip the leading stuff.
896: */
897: if ((public = try_read_key(&cp)) == NULL) {
898: i = strtol(cp, &ep, 10);
899: if (i == 0 || ep == NULL ||
900: (*ep != ' ' && *ep != '\t')) {
901: int quoted = 0;
902:
903: comment = cp;
904: for (; *cp && (quoted || (*cp != ' ' &&
905: *cp != '\t')); cp++) {
906: if (*cp == '\\' && cp[1] == '"')
907: cp++; /* Skip both */
908: else if (*cp == '"')
909: quoted = !quoted;
910: }
911: if (!*cp)
912: continue;
913: *cp++ = '\0';
914: }
1.191 djm 915: }
1.279 djm 916: /* Retry after parsing leading hostname/key options */
917: if (public == NULL && (public = try_read_key(&cp)) == NULL) {
1.289 djm 918: debug("%s:%lu: not a public key", path, lnum);
1.191 djm 919: continue;
920: }
921:
1.279 djm 922: /* Find trailing comment, if any */
923: for (; *cp == ' ' || *cp == '\t'; cp++)
1.191 djm 924: ;
1.279 djm 925: if (*cp != '\0' && *cp != '#')
1.191 djm 926: comment = cp;
1.279 djm 927:
928: fingerprint_one_key(public, comment);
1.252 djm 929: sshkey_free(public);
1.279 djm 930: invalid = 0; /* One good key in the file is sufficient */
1.15 markus 931: }
1.191 djm 932: fclose(f);
1.317 markus 933: free(line);
1.191 djm 934:
1.269 djm 935: if (invalid)
1.279 djm 936: fatal("%s is not a public key file.", path);
1.12 markus 937: exit(0);
1.8 markus 938: }
939:
1.119 djm 940: static void
1.206 stevesk 941: do_gen_all_hostkeys(struct passwd *pw)
942: {
943: struct {
944: char *key_type;
945: char *key_type_display;
946: char *path;
947: } key_types[] = {
1.267 djm 948: #ifdef WITH_OPENSSL
1.206 stevesk 949: { "rsa", "RSA" ,_PATH_HOST_RSA_KEY_FILE },
950: { "dsa", "DSA", _PATH_HOST_DSA_KEY_FILE },
951: { "ecdsa", "ECDSA",_PATH_HOST_ECDSA_KEY_FILE },
1.267 djm 952: #endif /* WITH_OPENSSL */
1.238 markus 953: { "ed25519", "ED25519",_PATH_HOST_ED25519_KEY_FILE },
1.313 markus 954: #ifdef WITH_XMSS
955: { "xmss", "XMSS",_PATH_HOST_XMSS_KEY_FILE },
956: #endif /* WITH_XMSS */
1.206 stevesk 957: { NULL, NULL, NULL }
958: };
959:
1.325 ! djm 960: u_int bits = 0;
1.206 stevesk 961: int first = 0;
962: struct stat st;
1.252 djm 963: struct sshkey *private, *public;
1.307 djm 964: char comment[1024], *prv_tmp, *pub_tmp, *prv_file, *pub_file;
1.252 djm 965: int i, type, fd, r;
1.206 stevesk 966: FILE *f;
967:
968: for (i = 0; key_types[i].key_type; i++) {
1.307 djm 969: public = private = NULL;
970: prv_tmp = pub_tmp = prv_file = pub_file = NULL;
971:
972: xasprintf(&prv_file, "%s%s",
973: identity_file, key_types[i].path);
974:
975: /* Check whether private key exists and is not zero-length */
976: if (stat(prv_file, &st) == 0) {
977: if (st.st_size != 0)
978: goto next;
979: } else if (errno != ENOENT) {
1.269 djm 980: error("Could not stat %s: %s", key_types[i].path,
1.206 stevesk 981: strerror(errno));
1.307 djm 982: goto failnext;
1.206 stevesk 983: }
984:
1.307 djm 985: /*
986: * Private key doesn't exist or is invalid; proceed with
987: * key generation.
988: */
989: xasprintf(&prv_tmp, "%s%s.XXXXXXXXXX",
990: identity_file, key_types[i].path);
991: xasprintf(&pub_tmp, "%s%s.pub.XXXXXXXXXX",
992: identity_file, key_types[i].path);
993: xasprintf(&pub_file, "%s%s.pub",
994: identity_file, key_types[i].path);
995:
1.206 stevesk 996: if (first == 0) {
997: first = 1;
998: printf("%s: generating new host keys: ", __progname);
999: }
1000: printf("%s ", key_types[i].key_type_display);
1001: fflush(stdout);
1.252 djm 1002: type = sshkey_type_from_name(key_types[i].key_type);
1.307 djm 1003: if ((fd = mkstemp(prv_tmp)) == -1) {
1004: error("Could not save your public key in %s: %s",
1005: prv_tmp, strerror(errno));
1006: goto failnext;
1007: }
1008: close(fd); /* just using mkstemp() to generate/reserve a name */
1.206 stevesk 1009: bits = 0;
1.255 djm 1010: type_bits_valid(type, NULL, &bits);
1.252 djm 1011: if ((r = sshkey_generate(type, bits, &private)) != 0) {
1.304 markus 1012: error("sshkey_generate failed: %s", ssh_err(r));
1.307 djm 1013: goto failnext;
1.206 stevesk 1014: }
1.252 djm 1015: if ((r = sshkey_from_private(private, &public)) != 0)
1016: fatal("sshkey_from_private failed: %s", ssh_err(r));
1.206 stevesk 1017: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name,
1018: hostname);
1.307 djm 1019: if ((r = sshkey_save_private(private, prv_tmp, "",
1.252 djm 1020: comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 1021: error("Saving key \"%s\" failed: %s",
1.307 djm 1022: prv_tmp, ssh_err(r));
1023: goto failnext;
1.206 stevesk 1024: }
1.307 djm 1025: if ((fd = mkstemp(pub_tmp)) == -1) {
1026: error("Could not save your public key in %s: %s",
1027: pub_tmp, strerror(errno));
1028: goto failnext;
1.206 stevesk 1029: }
1.307 djm 1030: (void)fchmod(fd, 0644);
1.206 stevesk 1031: f = fdopen(fd, "w");
1032: if (f == NULL) {
1.307 djm 1033: error("fdopen %s failed: %s", pub_tmp, strerror(errno));
1.250 doug 1034: close(fd);
1.307 djm 1035: goto failnext;
1.206 stevesk 1036: }
1.254 djm 1037: if ((r = sshkey_write(public, f)) != 0) {
1.269 djm 1038: error("write key failed: %s", ssh_err(r));
1.250 doug 1039: fclose(f);
1.307 djm 1040: goto failnext;
1041: }
1042: fprintf(f, " %s\n", comment);
1043: if (ferror(f) != 0) {
1044: error("write key failed: %s", strerror(errno));
1045: fclose(f);
1046: goto failnext;
1047: }
1048: if (fclose(f) != 0) {
1049: error("key close failed: %s", strerror(errno));
1050: goto failnext;
1051: }
1052:
1053: /* Rename temporary files to their permanent locations. */
1054: if (rename(pub_tmp, pub_file) != 0) {
1055: error("Unable to move %s into position: %s",
1056: pub_file, strerror(errno));
1057: goto failnext;
1058: }
1059: if (rename(prv_tmp, prv_file) != 0) {
1060: error("Unable to move %s into position: %s",
1061: key_types[i].path, strerror(errno));
1062: failnext:
1.206 stevesk 1063: first = 0;
1.307 djm 1064: goto next;
1.206 stevesk 1065: }
1.307 djm 1066: next:
1067: sshkey_free(private);
1.252 djm 1068: sshkey_free(public);
1.307 djm 1069: free(prv_tmp);
1070: free(pub_tmp);
1071: free(prv_file);
1072: free(pub_file);
1.206 stevesk 1073: }
1074: if (first != 0)
1075: printf("\n");
1076: }
1077:
1.256 djm 1078: struct known_hosts_ctx {
1.257 djm 1079: const char *host; /* Hostname searched for in find/delete case */
1080: FILE *out; /* Output file, stdout for find_hosts case */
1081: int has_unhashed; /* When hashing, original had unhashed hosts */
1082: int found_key; /* For find/delete, host was found */
1083: int invalid; /* File contained invalid items; don't delete */
1.325 ! djm 1084: int hash_hosts; /* Hash hostnames as we go */
! 1085: int find_host; /* Search for specific hostname */
! 1086: int delete_host; /* Delete host from known_hosts */
1.256 djm 1087: };
1088:
1089: static int
1090: known_hosts_hash(struct hostkey_foreach_line *l, void *_ctx)
1.119 djm 1091: {
1.256 djm 1092: struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
1093: char *hashed, *cp, *hosts, *ohosts;
1094: int has_wild = l->hosts && strcspn(l->hosts, "*?!") != strlen(l->hosts);
1.298 dtucker 1095: int was_hashed = l->hosts && l->hosts[0] == HASH_DELIM;
1.256 djm 1096:
1.262 djm 1097: switch (l->status) {
1098: case HKF_STATUS_OK:
1099: case HKF_STATUS_MATCHED:
1100: /*
1101: * Don't hash hosts already already hashed, with wildcard
1102: * characters or a CA/revocation marker.
1103: */
1.296 djm 1104: if (was_hashed || has_wild || l->marker != MRK_NONE) {
1.262 djm 1105: fprintf(ctx->out, "%s\n", l->line);
1.325 ! djm 1106: if (has_wild && !ctx->find_host) {
1.297 dtucker 1107: logit("%s:%lu: ignoring host name "
1.269 djm 1108: "with wildcard: %.64s", l->path,
1.262 djm 1109: l->linenum, l->hosts);
1110: }
1111: return 0;
1112: }
1113: /*
1114: * Split any comma-separated hostnames from the host list,
1115: * hash and store separately.
1116: */
1117: ohosts = hosts = xstrdup(l->hosts);
1118: while ((cp = strsep(&hosts, ",")) != NULL && *cp != '\0') {
1.299 djm 1119: lowercase(cp);
1.262 djm 1120: if ((hashed = host_hash(cp, NULL, 0)) == NULL)
1121: fatal("hash_host failed");
1122: fprintf(ctx->out, "%s %s\n", hashed, l->rawkey);
1123: ctx->has_unhashed = 1;
1124: }
1125: free(ohosts);
1126: return 0;
1127: case HKF_STATUS_INVALID:
1128: /* Retain invalid lines, but mark file as invalid. */
1.256 djm 1129: ctx->invalid = 1;
1.297 dtucker 1130: logit("%s:%lu: invalid line", l->path, l->linenum);
1.262 djm 1131: /* FALLTHROUGH */
1132: default:
1.256 djm 1133: fprintf(ctx->out, "%s\n", l->line);
1134: return 0;
1135: }
1.262 djm 1136: /* NOTREACHED */
1137: return -1;
1.256 djm 1138: }
1139:
1140: static int
1141: known_hosts_find_delete(struct hostkey_foreach_line *l, void *_ctx)
1142: {
1143: struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
1.272 djm 1144: enum sshkey_fp_rep rep;
1145: int fptype;
1146: char *fp;
1147:
1148: fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
1149: rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
1.256 djm 1150:
1.262 djm 1151: if (l->status == HKF_STATUS_MATCHED) {
1.325 ! djm 1152: if (ctx->delete_host) {
1.256 djm 1153: if (l->marker != MRK_NONE) {
1154: /* Don't remove CA and revocation lines */
1155: fprintf(ctx->out, "%s\n", l->line);
1156: } else {
1157: /*
1158: * Hostname matches and has no CA/revoke
1159: * marker, delete it by *not* writing the
1160: * line to ctx->out.
1161: */
1162: ctx->found_key = 1;
1163: if (!quiet)
1.297 dtucker 1164: printf("# Host %s found: line %lu\n",
1.256 djm 1165: ctx->host, l->linenum);
1166: }
1167: return 0;
1.325 ! djm 1168: } else if (ctx->find_host) {
1.256 djm 1169: ctx->found_key = 1;
1170: if (!quiet) {
1.297 dtucker 1171: printf("# Host %s found: line %lu %s\n",
1.256 djm 1172: ctx->host,
1173: l->linenum, l->marker == MRK_CA ? "CA" :
1174: (l->marker == MRK_REVOKE ? "REVOKED" : ""));
1175: }
1.325 ! djm 1176: if (ctx->hash_hosts)
1.256 djm 1177: known_hosts_hash(l, ctx);
1.272 djm 1178: else if (print_fingerprint) {
1179: fp = sshkey_fingerprint(l->key, fptype, rep);
1.294 djm 1180: mprintf("%s %s %s %s\n", ctx->host,
1.272 djm 1181: sshkey_type(l->key), fp, l->comment);
1182: free(fp);
1183: } else
1.256 djm 1184: fprintf(ctx->out, "%s\n", l->line);
1185: return 0;
1186: }
1.325 ! djm 1187: } else if (ctx->delete_host) {
1.256 djm 1188: /* Retain non-matching hosts when deleting */
1189: if (l->status == HKF_STATUS_INVALID) {
1190: ctx->invalid = 1;
1.297 dtucker 1191: logit("%s:%lu: invalid line", l->path, l->linenum);
1.256 djm 1192: }
1193: fprintf(ctx->out, "%s\n", l->line);
1.166 djm 1194: }
1.256 djm 1195: return 0;
1.119 djm 1196: }
1197:
1198: static void
1.325 ! djm 1199: do_known_hosts(struct passwd *pw, const char *name, int find_host,
! 1200: int delete_host, int hash_hosts)
1.119 djm 1201: {
1.258 deraadt 1202: char *cp, tmp[PATH_MAX], old[PATH_MAX];
1.257 djm 1203: int r, fd, oerrno, inplace = 0;
1.256 djm 1204: struct known_hosts_ctx ctx;
1.272 djm 1205: u_int foreach_options;
1.119 djm 1206:
1207: if (!have_identity) {
1208: cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
1209: if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
1210: sizeof(identity_file))
1211: fatal("Specified known hosts path too long");
1.227 djm 1212: free(cp);
1.119 djm 1213: have_identity = 1;
1214: }
1215:
1.256 djm 1216: memset(&ctx, 0, sizeof(ctx));
1217: ctx.out = stdout;
1218: ctx.host = name;
1.325 ! djm 1219: ctx.hash_hosts = hash_hosts;
! 1220: ctx.find_host = find_host;
! 1221: ctx.delete_host = delete_host;
1.256 djm 1222:
1.119 djm 1223: /*
1224: * Find hosts goes to stdout, hash and deletions happen in-place
1225: * A corner case is ssh-keygen -HF foo, which should go to stdout
1226: */
1227: if (!find_host && (hash_hosts || delete_host)) {
1228: if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
1229: strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
1230: strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
1231: strlcat(old, ".old", sizeof(old)) >= sizeof(old))
1232: fatal("known_hosts path too long");
1233: umask(077);
1.256 djm 1234: if ((fd = mkstemp(tmp)) == -1)
1.119 djm 1235: fatal("mkstemp: %s", strerror(errno));
1.256 djm 1236: if ((ctx.out = fdopen(fd, "w")) == NULL) {
1237: oerrno = errno;
1.119 djm 1238: unlink(tmp);
1.256 djm 1239: fatal("fdopen: %s", strerror(oerrno));
1.119 djm 1240: }
1.257 djm 1241: inplace = 1;
1.119 djm 1242: }
1.256 djm 1243: /* XXX support identity_file == "-" for stdin */
1.272 djm 1244: foreach_options = find_host ? HKF_WANT_MATCH : 0;
1245: foreach_options |= print_fingerprint ? HKF_WANT_PARSE_KEY : 0;
1.316 djm 1246: if ((r = hostkeys_foreach(identity_file, (find_host || !hash_hosts) ?
1.315 djm 1247: known_hosts_find_delete : known_hosts_hash, &ctx, name, NULL,
1248: foreach_options)) != 0) {
1.284 deraadt 1249: if (inplace)
1250: unlink(tmp);
1.256 djm 1251: fatal("%s: hostkeys_foreach failed: %s", __func__, ssh_err(r));
1.284 deraadt 1252: }
1.119 djm 1253:
1.257 djm 1254: if (inplace)
1.256 djm 1255: fclose(ctx.out);
1.119 djm 1256:
1.256 djm 1257: if (ctx.invalid) {
1.269 djm 1258: error("%s is not a valid known_hosts file.", identity_file);
1.257 djm 1259: if (inplace) {
1.269 djm 1260: error("Not replacing existing known_hosts "
1261: "file because of errors");
1.119 djm 1262: unlink(tmp);
1263: }
1264: exit(1);
1.256 djm 1265: } else if (delete_host && !ctx.found_key) {
1.269 djm 1266: logit("Host %s not found in %s", name, identity_file);
1.277 djm 1267: if (inplace)
1268: unlink(tmp);
1.257 djm 1269: } else if (inplace) {
1.119 djm 1270: /* Backup existing file */
1271: if (unlink(old) == -1 && errno != ENOENT)
1272: fatal("unlink %.100s: %s", old, strerror(errno));
1273: if (link(identity_file, old) == -1)
1274: fatal("link %.100s to %.100s: %s", identity_file, old,
1275: strerror(errno));
1276: /* Move new one into place */
1277: if (rename(tmp, identity_file) == -1) {
1278: error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
1279: strerror(errno));
1280: unlink(tmp);
1281: unlink(old);
1282: exit(1);
1283: }
1284:
1.269 djm 1285: printf("%s updated.\n", identity_file);
1286: printf("Original contents retained as %s\n", old);
1.256 djm 1287: if (ctx.has_unhashed) {
1.269 djm 1288: logit("WARNING: %s contains unhashed entries", old);
1289: logit("Delete this file to ensure privacy "
1290: "of hostnames");
1.119 djm 1291: }
1292: }
1293:
1.256 djm 1294: exit (find_host && !ctx.found_key);
1.119 djm 1295: }
1296:
1.13 deraadt 1297: /*
1298: * Perform changing a passphrase. The argument is the passwd structure
1299: * for the current user.
1300: */
1.63 itojun 1301: static void
1.7 markus 1302: do_change_passphrase(struct passwd *pw)
1303: {
1.12 markus 1304: char *comment;
1305: char *old_passphrase, *passphrase1, *passphrase2;
1306: struct stat st;
1.252 djm 1307: struct sshkey *private;
1308: int r;
1.12 markus 1309:
1310: if (!have_identity)
1311: ask_filename(pw, "Enter file in which the key is");
1.269 djm 1312: if (stat(identity_file, &st) < 0)
1313: fatal("%s: %s", identity_file, strerror(errno));
1.12 markus 1314: /* Try to load the file with empty passphrase. */
1.252 djm 1315: r = sshkey_load_private(identity_file, "", &private, &comment);
1316: if (r == SSH_ERR_KEY_WRONG_PASSPHRASE) {
1.12 markus 1317: if (identity_passphrase)
1318: old_passphrase = xstrdup(identity_passphrase);
1319: else
1.65 markus 1320: old_passphrase =
1321: read_passphrase("Enter old passphrase: ",
1322: RP_ALLOW_STDIN);
1.252 djm 1323: r = sshkey_load_private(identity_file, old_passphrase,
1324: &private, &comment);
1.240 djm 1325: explicit_bzero(old_passphrase, strlen(old_passphrase));
1.227 djm 1326: free(old_passphrase);
1.252 djm 1327: if (r != 0)
1328: goto badkey;
1329: } else if (r != 0) {
1330: badkey:
1.269 djm 1331: fatal("Failed to load key %s: %s", identity_file, ssh_err(r));
1.12 markus 1332: }
1.266 djm 1333: if (comment)
1.294 djm 1334: mprintf("Key has comment '%s'\n", comment);
1.12 markus 1335:
1336: /* Ask the new passphrase (twice). */
1337: if (identity_new_passphrase) {
1338: passphrase1 = xstrdup(identity_new_passphrase);
1339: passphrase2 = NULL;
1340: } else {
1341: passphrase1 =
1.65 markus 1342: read_passphrase("Enter new passphrase (empty for no "
1343: "passphrase): ", RP_ALLOW_STDIN);
1344: passphrase2 = read_passphrase("Enter same passphrase again: ",
1.86 deraadt 1345: RP_ALLOW_STDIN);
1.12 markus 1346:
1347: /* Verify that they are the same. */
1348: if (strcmp(passphrase1, passphrase2) != 0) {
1.240 djm 1349: explicit_bzero(passphrase1, strlen(passphrase1));
1350: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 1351: free(passphrase1);
1352: free(passphrase2);
1.12 markus 1353: printf("Pass phrases do not match. Try again.\n");
1354: exit(1);
1355: }
1356: /* Destroy the other copy. */
1.240 djm 1357: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 1358: free(passphrase2);
1.12 markus 1359: }
1360:
1361: /* Save the file using the new passphrase. */
1.252 djm 1362: if ((r = sshkey_save_private(private, identity_file, passphrase1,
1363: comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 1364: error("Saving key \"%s\" failed: %s.",
1.252 djm 1365: identity_file, ssh_err(r));
1.240 djm 1366: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 1367: free(passphrase1);
1.252 djm 1368: sshkey_free(private);
1.227 djm 1369: free(comment);
1.12 markus 1370: exit(1);
1371: }
1372: /* Destroy the passphrase and the copy of the key in memory. */
1.240 djm 1373: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 1374: free(passphrase1);
1.252 djm 1375: sshkey_free(private); /* Destroys contents */
1.227 djm 1376: free(comment);
1.1 deraadt 1377:
1.12 markus 1378: printf("Your identification has been saved with the new passphrase.\n");
1379: exit(0);
1.1 deraadt 1380: }
1381:
1.105 jakob 1382: /*
1383: * Print the SSHFP RR.
1384: */
1.138 jakob 1385: static int
1.325 ! djm 1386: do_print_resource_record(struct passwd *pw, char *fname, char *hname,
! 1387: int print_generic)
1.105 jakob 1388: {
1.252 djm 1389: struct sshkey *public;
1.105 jakob 1390: char *comment = NULL;
1391: struct stat st;
1.252 djm 1392: int r;
1.105 jakob 1393:
1.138 jakob 1394: if (fname == NULL)
1.229 djm 1395: fatal("%s: no filename", __func__);
1.138 jakob 1396: if (stat(fname, &st) < 0) {
1397: if (errno == ENOENT)
1398: return 0;
1.269 djm 1399: fatal("%s: %s", fname, strerror(errno));
1.105 jakob 1400: }
1.269 djm 1401: if ((r = sshkey_load_public(fname, &public, &comment)) != 0)
1402: fatal("Failed to read v2 public key from \"%s\": %s.",
1.252 djm 1403: fname, ssh_err(r));
1404: export_dns_rr(hname, public, stdout, print_generic);
1405: sshkey_free(public);
1406: free(comment);
1407: return 1;
1.105 jakob 1408: }
1409:
1.13 deraadt 1410: /*
1411: * Change the comment of a private key file.
1412: */
1.63 itojun 1413: static void
1.325 ! djm 1414: do_change_comment(struct passwd *pw, const char *identity_comment)
1.1 deraadt 1415: {
1.46 deraadt 1416: char new_comment[1024], *comment, *passphrase;
1.252 djm 1417: struct sshkey *private;
1418: struct sshkey *public;
1.12 markus 1419: struct stat st;
1420: FILE *f;
1.252 djm 1421: int r, fd;
1.12 markus 1422:
1423: if (!have_identity)
1424: ask_filename(pw, "Enter file in which the key is");
1.269 djm 1425: if (stat(identity_file, &st) < 0)
1426: fatal("%s: %s", identity_file, strerror(errno));
1.252 djm 1427: if ((r = sshkey_load_private(identity_file, "",
1428: &private, &comment)) == 0)
1429: passphrase = xstrdup("");
1.269 djm 1430: else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
1431: fatal("Cannot load private key \"%s\": %s.",
1.252 djm 1432: identity_file, ssh_err(r));
1.269 djm 1433: else {
1.12 markus 1434: if (identity_passphrase)
1435: passphrase = xstrdup(identity_passphrase);
1436: else if (identity_new_passphrase)
1437: passphrase = xstrdup(identity_new_passphrase);
1438: else
1.65 markus 1439: passphrase = read_passphrase("Enter passphrase: ",
1440: RP_ALLOW_STDIN);
1.12 markus 1441: /* Try to load using the passphrase. */
1.252 djm 1442: if ((r = sshkey_load_private(identity_file, passphrase,
1443: &private, &comment)) != 0) {
1.240 djm 1444: explicit_bzero(passphrase, strlen(passphrase));
1.227 djm 1445: free(passphrase);
1.269 djm 1446: fatal("Cannot load private key \"%s\": %s.",
1.252 djm 1447: identity_file, ssh_err(r));
1.12 markus 1448: }
1449: }
1.283 halex 1450:
1.313 markus 1451: if (private->type != KEY_ED25519 && private->type != KEY_XMSS &&
1452: !use_new_format) {
1.302 djm 1453: error("Comments are only supported for keys stored in "
1.283 halex 1454: "the new format (-o).");
1.268 tobias 1455: explicit_bzero(passphrase, strlen(passphrase));
1.252 djm 1456: sshkey_free(private);
1.52 markus 1457: exit(1);
1.86 deraadt 1458: }
1.293 millert 1459: if (comment)
1460: printf("Key now has comment '%s'\n", comment);
1461: else
1462: printf("Key now has no comment\n");
1.12 markus 1463:
1464: if (identity_comment) {
1465: strlcpy(new_comment, identity_comment, sizeof(new_comment));
1466: } else {
1467: printf("Enter new comment: ");
1468: fflush(stdout);
1469: if (!fgets(new_comment, sizeof(new_comment), stdin)) {
1.240 djm 1470: explicit_bzero(passphrase, strlen(passphrase));
1.252 djm 1471: sshkey_free(private);
1.12 markus 1472: exit(1);
1473: }
1.162 gilles 1474: new_comment[strcspn(new_comment, "\n")] = '\0';
1.12 markus 1475: }
1476:
1477: /* Save the file using the new passphrase. */
1.252 djm 1478: if ((r = sshkey_save_private(private, identity_file, passphrase,
1479: new_comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 1480: error("Saving key \"%s\" failed: %s",
1.252 djm 1481: identity_file, ssh_err(r));
1.240 djm 1482: explicit_bzero(passphrase, strlen(passphrase));
1.227 djm 1483: free(passphrase);
1.252 djm 1484: sshkey_free(private);
1.227 djm 1485: free(comment);
1.12 markus 1486: exit(1);
1487: }
1.240 djm 1488: explicit_bzero(passphrase, strlen(passphrase));
1.227 djm 1489: free(passphrase);
1.252 djm 1490: if ((r = sshkey_from_private(private, &public)) != 0)
1.304 markus 1491: fatal("sshkey_from_private failed: %s", ssh_err(r));
1.252 djm 1492: sshkey_free(private);
1.12 markus 1493:
1494: strlcat(identity_file, ".pub", sizeof(identity_file));
1.46 deraadt 1495: fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1.269 djm 1496: if (fd == -1)
1497: fatal("Could not save your public key in %s", identity_file);
1.46 deraadt 1498: f = fdopen(fd, "w");
1.269 djm 1499: if (f == NULL)
1500: fatal("fdopen %s failed: %s", identity_file, strerror(errno));
1.252 djm 1501: if ((r = sshkey_write(public, f)) != 0)
1.269 djm 1502: fatal("write key failed: %s", ssh_err(r));
1.252 djm 1503: sshkey_free(public);
1.19 markus 1504: fprintf(f, " %s\n", new_comment);
1.12 markus 1505: fclose(f);
1.1 deraadt 1506:
1.227 djm 1507: free(comment);
1.1 deraadt 1508:
1.12 markus 1509: printf("The comment in your key file has been changed.\n");
1510: exit(0);
1.1 deraadt 1511: }
1512:
1.179 djm 1513: static void
1.252 djm 1514: add_flag_option(struct sshbuf *c, const char *name)
1.179 djm 1515: {
1.252 djm 1516: int r;
1517:
1.179 djm 1518: debug3("%s: %s", __func__, name);
1.252 djm 1519: if ((r = sshbuf_put_cstring(c, name)) != 0 ||
1520: (r = sshbuf_put_string(c, NULL, 0)) != 0)
1521: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.179 djm 1522: }
1523:
1524: static void
1.252 djm 1525: add_string_option(struct sshbuf *c, const char *name, const char *value)
1.179 djm 1526: {
1.252 djm 1527: struct sshbuf *b;
1528: int r;
1.179 djm 1529:
1530: debug3("%s: %s=%s", __func__, name, value);
1.252 djm 1531: if ((b = sshbuf_new()) == NULL)
1532: fatal("%s: sshbuf_new failed", __func__);
1533: if ((r = sshbuf_put_cstring(b, value)) != 0 ||
1534: (r = sshbuf_put_cstring(c, name)) != 0 ||
1535: (r = sshbuf_put_stringb(c, b)) != 0)
1536: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.179 djm 1537:
1.252 djm 1538: sshbuf_free(b);
1.179 djm 1539: }
1540:
1.190 djm 1541: #define OPTIONS_CRITICAL 1
1542: #define OPTIONS_EXTENSIONS 2
1.179 djm 1543: static void
1.252 djm 1544: prepare_options_buf(struct sshbuf *c, int which)
1.179 djm 1545: {
1.300 djm 1546: size_t i;
1547:
1.252 djm 1548: sshbuf_reset(c);
1.196 djm 1549: if ((which & OPTIONS_CRITICAL) != 0 &&
1550: certflags_command != NULL)
1551: add_string_option(c, "force-command", certflags_command);
1.190 djm 1552: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.210 djm 1553: (certflags_flags & CERTOPT_X_FWD) != 0)
1554: add_flag_option(c, "permit-X11-forwarding");
1555: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1.190 djm 1556: (certflags_flags & CERTOPT_AGENT_FWD) != 0)
1.186 djm 1557: add_flag_option(c, "permit-agent-forwarding");
1.190 djm 1558: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1559: (certflags_flags & CERTOPT_PORT_FWD) != 0)
1.186 djm 1560: add_flag_option(c, "permit-port-forwarding");
1.190 djm 1561: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1562: (certflags_flags & CERTOPT_PTY) != 0)
1.186 djm 1563: add_flag_option(c, "permit-pty");
1.190 djm 1564: if ((which & OPTIONS_EXTENSIONS) != 0 &&
1565: (certflags_flags & CERTOPT_USER_RC) != 0)
1.186 djm 1566: add_flag_option(c, "permit-user-rc");
1.190 djm 1567: if ((which & OPTIONS_CRITICAL) != 0 &&
1568: certflags_src_addr != NULL)
1569: add_string_option(c, "source-address", certflags_src_addr);
1.300 djm 1570: for (i = 0; i < ncert_userext; i++) {
1571: if ((cert_userext[i].crit && (which & OPTIONS_EXTENSIONS)) ||
1572: (!cert_userext[i].crit && (which & OPTIONS_CRITICAL)))
1573: continue;
1574: if (cert_userext[i].val == NULL)
1575: add_flag_option(c, cert_userext[i].key);
1576: else {
1577: add_string_option(c, cert_userext[i].key,
1578: cert_userext[i].val);
1579: }
1580: }
1.179 djm 1581: }
1582:
1.252 djm 1583: static struct sshkey *
1.197 djm 1584: load_pkcs11_key(char *path)
1585: {
1586: #ifdef ENABLE_PKCS11
1.252 djm 1587: struct sshkey **keys = NULL, *public, *private = NULL;
1588: int r, i, nkeys;
1.197 djm 1589:
1.252 djm 1590: if ((r = sshkey_load_public(path, &public, NULL)) != 0)
1591: fatal("Couldn't load CA public key \"%s\": %s",
1592: path, ssh_err(r));
1.197 djm 1593:
1594: nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, &keys);
1595: debug3("%s: %d keys", __func__, nkeys);
1596: if (nkeys <= 0)
1597: fatal("cannot read public key from pkcs11");
1598: for (i = 0; i < nkeys; i++) {
1.252 djm 1599: if (sshkey_equal_public(public, keys[i])) {
1.197 djm 1600: private = keys[i];
1601: continue;
1602: }
1.252 djm 1603: sshkey_free(keys[i]);
1.197 djm 1604: }
1.227 djm 1605: free(keys);
1.252 djm 1606: sshkey_free(public);
1.197 djm 1607: return private;
1608: #else
1609: fatal("no pkcs11 support");
1610: #endif /* ENABLE_PKCS11 */
1611: }
1612:
1.305 djm 1613: /* Signer for sshkey_certify_custom that uses the agent */
1614: static int
1615: agent_signer(const struct sshkey *key, u_char **sigp, size_t *lenp,
1616: const u_char *data, size_t datalen,
1617: const char *alg, u_int compat, void *ctx)
1618: {
1619: int *agent_fdp = (int *)ctx;
1620:
1621: return ssh_agent_sign(*agent_fdp, key, sigp, lenp,
1622: data, datalen, alg, compat);
1623: }
1624:
1.179 djm 1625: static void
1.325 ! djm 1626: do_ca_sign(struct passwd *pw, const char *ca_key_path, int prefer_agent,
! 1627: unsigned long long cert_serial, int argc, char **argv)
1.179 djm 1628: {
1.305 djm 1629: int r, i, fd, found, agent_fd = -1;
1.179 djm 1630: u_int n;
1.252 djm 1631: struct sshkey *ca, *public;
1.281 djm 1632: char valid[64], *otmp, *tmp, *cp, *out, *comment, **plist = NULL;
1.179 djm 1633: FILE *f;
1.305 djm 1634: struct ssh_identitylist *agent_ids;
1635: size_t j;
1.186 djm 1636:
1.246 markus 1637: #ifdef ENABLE_PKCS11
1.197 djm 1638: pkcs11_init(1);
1.246 markus 1639: #endif
1.197 djm 1640: tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
1641: if (pkcs11provider != NULL) {
1.305 djm 1642: /* If a PKCS#11 token was specified then try to use it */
1.197 djm 1643: if ((ca = load_pkcs11_key(tmp)) == NULL)
1644: fatal("No PKCS#11 key matching %s found", ca_key_path);
1.305 djm 1645: } else if (prefer_agent) {
1646: /*
1647: * Agent signature requested. Try to use agent after making
1648: * sure the public key specified is actually present in the
1649: * agent.
1650: */
1651: if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)
1652: fatal("Cannot load CA public key %s: %s",
1653: tmp, ssh_err(r));
1654: if ((r = ssh_get_authentication_socket(&agent_fd)) != 0)
1655: fatal("Cannot use public key for CA signature: %s",
1656: ssh_err(r));
1657: if ((r = ssh_fetch_identitylist(agent_fd, &agent_ids)) != 0)
1658: fatal("Retrieve agent key list: %s", ssh_err(r));
1659: found = 0;
1660: for (j = 0; j < agent_ids->nkeys; j++) {
1661: if (sshkey_equal(ca, agent_ids->keys[j])) {
1662: found = 1;
1663: break;
1664: }
1665: }
1666: if (!found)
1667: fatal("CA key %s not found in agent", tmp);
1668: ssh_free_identitylist(agent_ids);
1669: ca->flags |= SSHKEY_FLAG_EXT;
1670: } else {
1671: /* CA key is assumed to be a private key on the filesystem */
1.252 djm 1672: ca = load_identity(tmp);
1.305 djm 1673: }
1.227 djm 1674: free(tmp);
1.197 djm 1675:
1.290 djm 1676: if (key_type_name != NULL &&
1677: sshkey_type_from_name(key_type_name) != ca->type) {
1678: fatal("CA key type %s doesn't match specified %s",
1679: sshkey_ssh_name(ca), key_type_name);
1680: }
1681:
1.179 djm 1682: for (i = 0; i < argc; i++) {
1683: /* Split list of principals */
1684: n = 0;
1685: if (cert_principals != NULL) {
1686: otmp = tmp = xstrdup(cert_principals);
1687: plist = NULL;
1688: for (; (cp = strsep(&tmp, ",")) != NULL; n++) {
1.270 deraadt 1689: plist = xreallocarray(plist, n + 1, sizeof(*plist));
1.179 djm 1690: if (*(plist[n] = xstrdup(cp)) == '\0')
1691: fatal("Empty principal name");
1692: }
1.227 djm 1693: free(otmp);
1.179 djm 1694: }
1.312 djm 1695: if (n > SSHKEY_CERT_MAX_PRINCIPALS)
1696: fatal("Too many certificate principals specified");
1.179 djm 1697:
1698: tmp = tilde_expand_filename(argv[i], pw->pw_uid);
1.252 djm 1699: if ((r = sshkey_load_public(tmp, &public, &comment)) != 0)
1700: fatal("%s: unable to open \"%s\": %s",
1701: __func__, tmp, ssh_err(r));
1.200 djm 1702: if (public->type != KEY_RSA && public->type != KEY_DSA &&
1.313 markus 1703: public->type != KEY_ECDSA && public->type != KEY_ED25519 &&
1704: public->type != KEY_XMSS)
1.179 djm 1705: fatal("%s: key \"%s\" type %s cannot be certified",
1.252 djm 1706: __func__, tmp, sshkey_type(public));
1.179 djm 1707:
1708: /* Prepare certificate to sign */
1.275 djm 1709: if ((r = sshkey_to_certified(public)) != 0)
1.252 djm 1710: fatal("Could not upgrade key %s to certificate: %s",
1711: tmp, ssh_err(r));
1.179 djm 1712: public->cert->type = cert_key_type;
1.186 djm 1713: public->cert->serial = (u_int64_t)cert_serial;
1.179 djm 1714: public->cert->key_id = xstrdup(cert_key_id);
1715: public->cert->nprincipals = n;
1716: public->cert->principals = plist;
1717: public->cert->valid_after = cert_valid_from;
1718: public->cert->valid_before = cert_valid_to;
1.275 djm 1719: prepare_options_buf(public->cert->critical, OPTIONS_CRITICAL);
1720: prepare_options_buf(public->cert->extensions,
1721: OPTIONS_EXTENSIONS);
1.252 djm 1722: if ((r = sshkey_from_private(ca,
1723: &public->cert->signature_key)) != 0)
1.304 markus 1724: fatal("sshkey_from_private (ca key): %s", ssh_err(r));
1.179 djm 1725:
1.305 djm 1726: if (agent_fd != -1 && (ca->flags & SSHKEY_FLAG_EXT) != 0) {
1727: if ((r = sshkey_certify_custom(public, ca,
1728: key_type_name, agent_signer, &agent_fd)) != 0)
1729: fatal("Couldn't certify key %s via agent: %s",
1730: tmp, ssh_err(r));
1731: } else {
1732: if ((sshkey_certify(public, ca, key_type_name)) != 0)
1733: fatal("Couldn't certify key %s: %s",
1734: tmp, ssh_err(r));
1735: }
1.179 djm 1736:
1737: if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0)
1738: *cp = '\0';
1739: xasprintf(&out, "%s-cert.pub", tmp);
1.227 djm 1740: free(tmp);
1.179 djm 1741:
1742: if ((fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
1743: fatal("Could not open \"%s\" for writing: %s", out,
1744: strerror(errno));
1745: if ((f = fdopen(fd, "w")) == NULL)
1746: fatal("%s: fdopen: %s", __func__, strerror(errno));
1.252 djm 1747: if ((r = sshkey_write(public, f)) != 0)
1748: fatal("Could not write certified key to %s: %s",
1749: out, ssh_err(r));
1.179 djm 1750: fprintf(f, " %s\n", comment);
1751: fclose(f);
1752:
1.186 djm 1753: if (!quiet) {
1.282 djm 1754: sshkey_format_cert_validity(public->cert,
1.281 djm 1755: valid, sizeof(valid));
1.186 djm 1756: logit("Signed %s key %s: id \"%s\" serial %llu%s%s "
1.282 djm 1757: "valid %s", sshkey_cert_type(public),
1.205 djm 1758: out, public->cert->key_id,
1759: (unsigned long long)public->cert->serial,
1.179 djm 1760: cert_principals != NULL ? " for " : "",
1761: cert_principals != NULL ? cert_principals : "",
1.281 djm 1762: valid);
1.186 djm 1763: }
1.179 djm 1764:
1.252 djm 1765: sshkey_free(public);
1.227 djm 1766: free(out);
1.179 djm 1767: }
1.246 markus 1768: #ifdef ENABLE_PKCS11
1.197 djm 1769: pkcs11_terminate();
1.246 markus 1770: #endif
1.179 djm 1771: exit(0);
1772: }
1773:
1774: static u_int64_t
1775: parse_relative_time(const char *s, time_t now)
1776: {
1777: int64_t mul, secs;
1778:
1779: mul = *s == '-' ? -1 : 1;
1780:
1781: if ((secs = convtime(s + 1)) == -1)
1782: fatal("Invalid relative certificate time %s", s);
1783: if (mul == -1 && secs > now)
1784: fatal("Certificate time %s cannot be represented", s);
1785: return now + (u_int64_t)(secs * mul);
1786: }
1787:
1788: static void
1789: parse_cert_times(char *timespec)
1790: {
1791: char *from, *to;
1792: time_t now = time(NULL);
1793: int64_t secs;
1794:
1795: /* +timespec relative to now */
1796: if (*timespec == '+' && strchr(timespec, ':') == NULL) {
1797: if ((secs = convtime(timespec + 1)) == -1)
1798: fatal("Invalid relative certificate life %s", timespec);
1799: cert_valid_to = now + secs;
1800: /*
1801: * Backdate certificate one minute to avoid problems on hosts
1802: * with poorly-synchronised clocks.
1803: */
1804: cert_valid_from = ((now - 59)/ 60) * 60;
1805: return;
1806: }
1807:
1808: /*
1809: * from:to, where
1.308 djm 1810: * from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "always"
1811: * to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "forever"
1.179 djm 1812: */
1813: from = xstrdup(timespec);
1814: to = strchr(from, ':');
1815: if (to == NULL || from == to || *(to + 1) == '\0')
1.181 djm 1816: fatal("Invalid certificate life specification %s", timespec);
1.179 djm 1817: *to++ = '\0';
1818:
1819: if (*from == '-' || *from == '+')
1820: cert_valid_from = parse_relative_time(from, now);
1.308 djm 1821: else if (strcmp(from, "always") == 0)
1822: cert_valid_from = 0;
1.314 djm 1823: else if (parse_absolute_time(from, &cert_valid_from) != 0)
1824: fatal("Invalid from time \"%s\"", from);
1.179 djm 1825:
1826: if (*to == '-' || *to == '+')
1.235 djm 1827: cert_valid_to = parse_relative_time(to, now);
1.308 djm 1828: else if (strcmp(to, "forever") == 0)
1829: cert_valid_to = ~(u_int64_t)0;
1.314 djm 1830: else if (parse_absolute_time(to, &cert_valid_to) != 0)
1831: fatal("Invalid to time \"%s\"", to);
1.179 djm 1832:
1833: if (cert_valid_to <= cert_valid_from)
1834: fatal("Empty certificate validity interval");
1.227 djm 1835: free(from);
1.179 djm 1836: }
1837:
1838: static void
1.186 djm 1839: add_cert_option(char *opt)
1.179 djm 1840: {
1.300 djm 1841: char *val, *cp;
1842: int iscrit = 0;
1.179 djm 1843:
1.208 stevesk 1844: if (strcasecmp(opt, "clear") == 0)
1.190 djm 1845: certflags_flags = 0;
1.179 djm 1846: else if (strcasecmp(opt, "no-x11-forwarding") == 0)
1.190 djm 1847: certflags_flags &= ~CERTOPT_X_FWD;
1.179 djm 1848: else if (strcasecmp(opt, "permit-x11-forwarding") == 0)
1.190 djm 1849: certflags_flags |= CERTOPT_X_FWD;
1.179 djm 1850: else if (strcasecmp(opt, "no-agent-forwarding") == 0)
1.190 djm 1851: certflags_flags &= ~CERTOPT_AGENT_FWD;
1.179 djm 1852: else if (strcasecmp(opt, "permit-agent-forwarding") == 0)
1.190 djm 1853: certflags_flags |= CERTOPT_AGENT_FWD;
1.179 djm 1854: else if (strcasecmp(opt, "no-port-forwarding") == 0)
1.190 djm 1855: certflags_flags &= ~CERTOPT_PORT_FWD;
1.179 djm 1856: else if (strcasecmp(opt, "permit-port-forwarding") == 0)
1.190 djm 1857: certflags_flags |= CERTOPT_PORT_FWD;
1.179 djm 1858: else if (strcasecmp(opt, "no-pty") == 0)
1.190 djm 1859: certflags_flags &= ~CERTOPT_PTY;
1.179 djm 1860: else if (strcasecmp(opt, "permit-pty") == 0)
1.190 djm 1861: certflags_flags |= CERTOPT_PTY;
1.179 djm 1862: else if (strcasecmp(opt, "no-user-rc") == 0)
1.190 djm 1863: certflags_flags &= ~CERTOPT_USER_RC;
1.179 djm 1864: else if (strcasecmp(opt, "permit-user-rc") == 0)
1.190 djm 1865: certflags_flags |= CERTOPT_USER_RC;
1.179 djm 1866: else if (strncasecmp(opt, "force-command=", 14) == 0) {
1867: val = opt + 14;
1868: if (*val == '\0')
1.186 djm 1869: fatal("Empty force-command option");
1.190 djm 1870: if (certflags_command != NULL)
1.179 djm 1871: fatal("force-command already specified");
1.190 djm 1872: certflags_command = xstrdup(val);
1.179 djm 1873: } else if (strncasecmp(opt, "source-address=", 15) == 0) {
1874: val = opt + 15;
1875: if (*val == '\0')
1.186 djm 1876: fatal("Empty source-address option");
1.190 djm 1877: if (certflags_src_addr != NULL)
1.179 djm 1878: fatal("source-address already specified");
1879: if (addr_match_cidr_list(NULL, val) != 0)
1880: fatal("Invalid source-address list");
1.190 djm 1881: certflags_src_addr = xstrdup(val);
1.300 djm 1882: } else if (strncasecmp(opt, "extension:", 10) == 0 ||
1883: (iscrit = (strncasecmp(opt, "critical:", 9) == 0))) {
1884: val = xstrdup(strchr(opt, ':') + 1);
1885: if ((cp = strchr(val, '=')) != NULL)
1886: *cp++ = '\0';
1887: cert_userext = xreallocarray(cert_userext, ncert_userext + 1,
1888: sizeof(*cert_userext));
1889: cert_userext[ncert_userext].key = val;
1890: cert_userext[ncert_userext].val = cp == NULL ?
1891: NULL : xstrdup(cp);
1892: cert_userext[ncert_userext].crit = iscrit;
1893: ncert_userext++;
1.179 djm 1894: } else
1.186 djm 1895: fatal("Unsupported certificate option \"%s\"", opt);
1.179 djm 1896: }
1897:
1.63 itojun 1898: static void
1.275 djm 1899: show_options(struct sshbuf *optbuf, int in_critical)
1.192 djm 1900: {
1.245 djm 1901: char *name, *arg;
1.252 djm 1902: struct sshbuf *options, *option = NULL;
1903: int r;
1904:
1905: if ((options = sshbuf_fromb(optbuf)) == NULL)
1906: fatal("%s: sshbuf_fromb failed", __func__);
1907: while (sshbuf_len(options) != 0) {
1908: sshbuf_free(option);
1909: option = NULL;
1910: if ((r = sshbuf_get_cstring(options, &name, NULL)) != 0 ||
1911: (r = sshbuf_froms(options, &option)) != 0)
1912: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.192 djm 1913: printf(" %s", name);
1.275 djm 1914: if (!in_critical &&
1.192 djm 1915: (strcmp(name, "permit-X11-forwarding") == 0 ||
1916: strcmp(name, "permit-agent-forwarding") == 0 ||
1917: strcmp(name, "permit-port-forwarding") == 0 ||
1918: strcmp(name, "permit-pty") == 0 ||
1919: strcmp(name, "permit-user-rc") == 0))
1920: printf("\n");
1.275 djm 1921: else if (in_critical &&
1.192 djm 1922: (strcmp(name, "force-command") == 0 ||
1923: strcmp(name, "source-address") == 0)) {
1.252 djm 1924: if ((r = sshbuf_get_cstring(option, &arg, NULL)) != 0)
1925: fatal("%s: buffer error: %s",
1926: __func__, ssh_err(r));
1.245 djm 1927: printf(" %s\n", arg);
1928: free(arg);
1.192 djm 1929: } else {
1.252 djm 1930: printf(" UNKNOWN OPTION (len %zu)\n",
1931: sshbuf_len(option));
1932: sshbuf_reset(option);
1.192 djm 1933: }
1.227 djm 1934: free(name);
1.252 djm 1935: if (sshbuf_len(option) != 0)
1.192 djm 1936: fatal("Option corrupt: extra data at end");
1937: }
1.252 djm 1938: sshbuf_free(option);
1939: sshbuf_free(options);
1.192 djm 1940: }
1941:
1942: static void
1.278 djm 1943: print_cert(struct sshkey *key)
1.182 djm 1944: {
1.281 djm 1945: char valid[64], *key_fp, *ca_fp;
1.275 djm 1946: u_int i;
1.186 djm 1947:
1.252 djm 1948: key_fp = sshkey_fingerprint(key, fingerprint_hash, SSH_FP_DEFAULT);
1949: ca_fp = sshkey_fingerprint(key->cert->signature_key,
1.251 djm 1950: fingerprint_hash, SSH_FP_DEFAULT);
1.259 djm 1951: if (key_fp == NULL || ca_fp == NULL)
1952: fatal("%s: sshkey_fingerprint fail", __func__);
1.281 djm 1953: sshkey_format_cert_validity(key->cert, valid, sizeof(valid));
1.182 djm 1954:
1.252 djm 1955: printf(" Type: %s %s certificate\n", sshkey_ssh_name(key),
1956: sshkey_cert_type(key));
1957: printf(" Public key: %s %s\n", sshkey_type(key), key_fp);
1.323 djm 1958: printf(" Signing CA: %s %s (using %s)\n",
1959: sshkey_type(key->cert->signature_key), ca_fp,
1960: key->cert->signature_type);
1.186 djm 1961: printf(" Key ID: \"%s\"\n", key->cert->key_id);
1.275 djm 1962: printf(" Serial: %llu\n", (unsigned long long)key->cert->serial);
1.281 djm 1963: printf(" Valid: %s\n", valid);
1.182 djm 1964: printf(" Principals: ");
1965: if (key->cert->nprincipals == 0)
1966: printf("(none)\n");
1967: else {
1968: for (i = 0; i < key->cert->nprincipals; i++)
1969: printf("\n %s",
1970: key->cert->principals[i]);
1971: printf("\n");
1972: }
1.186 djm 1973: printf(" Critical Options: ");
1.252 djm 1974: if (sshbuf_len(key->cert->critical) == 0)
1.182 djm 1975: printf("(none)\n");
1976: else {
1977: printf("\n");
1.275 djm 1978: show_options(key->cert->critical, 1);
1.186 djm 1979: }
1.275 djm 1980: printf(" Extensions: ");
1981: if (sshbuf_len(key->cert->extensions) == 0)
1982: printf("(none)\n");
1983: else {
1984: printf("\n");
1985: show_options(key->cert->extensions, 0);
1.182 djm 1986: }
1.278 djm 1987: }
1988:
1989: static void
1990: do_show_cert(struct passwd *pw)
1991: {
1992: struct sshkey *key = NULL;
1993: struct stat st;
1994: int r, is_stdin = 0, ok = 0;
1995: FILE *f;
1.317 markus 1996: char *cp, *line = NULL;
1.278 djm 1997: const char *path;
1.317 markus 1998: size_t linesize = 0;
1.289 djm 1999: u_long lnum = 0;
1.278 djm 2000:
2001: if (!have_identity)
2002: ask_filename(pw, "Enter file in which the key is");
2003: if (strcmp(identity_file, "-") != 0 && stat(identity_file, &st) < 0)
2004: fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
2005:
2006: path = identity_file;
2007: if (strcmp(path, "-") == 0) {
2008: f = stdin;
2009: path = "(stdin)";
2010: is_stdin = 1;
2011: } else if ((f = fopen(identity_file, "r")) == NULL)
2012: fatal("fopen %s: %s", identity_file, strerror(errno));
2013:
1.317 markus 2014: while (getline(&line, &linesize, f) != -1) {
2015: lnum++;
1.278 djm 2016: sshkey_free(key);
2017: key = NULL;
2018: /* Trim leading space and comments */
2019: cp = line + strspn(line, " \t");
2020: if (*cp == '#' || *cp == '\0')
2021: continue;
2022: if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
1.304 markus 2023: fatal("sshkey_new");
1.278 djm 2024: if ((r = sshkey_read(key, &cp)) != 0) {
2025: error("%s:%lu: invalid key: %s", path,
2026: lnum, ssh_err(r));
2027: continue;
2028: }
2029: if (!sshkey_is_cert(key)) {
2030: error("%s:%lu is not a certificate", path, lnum);
2031: continue;
2032: }
2033: ok = 1;
2034: if (!is_stdin && lnum == 1)
2035: printf("%s:\n", path);
2036: else
2037: printf("%s:%lu:\n", path, lnum);
2038: print_cert(key);
2039: }
1.317 markus 2040: free(line);
1.278 djm 2041: sshkey_free(key);
2042: fclose(f);
2043: exit(ok ? 0 : 1);
1.182 djm 2044: }
2045:
1.246 markus 2046: #ifdef WITH_OPENSSL
1.182 djm 2047: static void
1.223 djm 2048: load_krl(const char *path, struct ssh_krl **krlp)
2049: {
1.252 djm 2050: struct sshbuf *krlbuf;
2051: int r, fd;
1.223 djm 2052:
1.252 djm 2053: if ((krlbuf = sshbuf_new()) == NULL)
2054: fatal("sshbuf_new failed");
1.223 djm 2055: if ((fd = open(path, O_RDONLY)) == -1)
2056: fatal("open %s: %s", path, strerror(errno));
1.252 djm 2057: if ((r = sshkey_load_file(fd, krlbuf)) != 0)
2058: fatal("Unable to load KRL: %s", ssh_err(r));
1.223 djm 2059: close(fd);
2060: /* XXX check sigs */
1.252 djm 2061: if ((r = ssh_krl_from_blob(krlbuf, krlp, NULL, 0)) != 0 ||
1.223 djm 2062: *krlp == NULL)
1.252 djm 2063: fatal("Invalid KRL file: %s", ssh_err(r));
2064: sshbuf_free(krlbuf);
1.223 djm 2065: }
2066:
2067: static void
1.320 djm 2068: hash_to_blob(const char *cp, u_char **blobp, size_t *lenp,
2069: const char *file, u_long lnum)
2070: {
2071: char *tmp;
2072: size_t tlen;
2073: struct sshbuf *b;
2074: int r;
2075:
2076: if (strncmp(cp, "SHA256:", 7) != 0)
2077: fatal("%s:%lu: unsupported hash algorithm", file, lnum);
2078: cp += 7;
2079:
2080: /*
2081: * OpenSSH base64 hashes omit trailing '='
2082: * characters; put them back for decode.
2083: */
2084: tlen = strlen(cp);
2085: tmp = xmalloc(tlen + 4 + 1);
2086: strlcpy(tmp, cp, tlen + 1);
2087: while ((tlen % 4) != 0) {
2088: tmp[tlen++] = '=';
2089: tmp[tlen] = '\0';
2090: }
2091: if ((b = sshbuf_new()) == NULL)
2092: fatal("%s: sshbuf_new failed", __func__);
2093: if ((r = sshbuf_b64tod(b, tmp)) != 0)
2094: fatal("%s:%lu: decode hash failed: %s", file, lnum, ssh_err(r));
2095: free(tmp);
2096: *lenp = sshbuf_len(b);
2097: *blobp = xmalloc(*lenp);
2098: memcpy(*blobp, sshbuf_ptr(b), *lenp);
2099: sshbuf_free(b);
2100: }
2101:
2102: static void
1.261 djm 2103: update_krl_from_file(struct passwd *pw, const char *file, int wild_ca,
1.252 djm 2104: const struct sshkey *ca, struct ssh_krl *krl)
1.223 djm 2105: {
1.252 djm 2106: struct sshkey *key = NULL;
1.223 djm 2107: u_long lnum = 0;
1.317 markus 2108: char *path, *cp, *ep, *line = NULL;
1.320 djm 2109: u_char *blob = NULL;
2110: size_t blen = 0, linesize = 0;
1.223 djm 2111: unsigned long long serial, serial2;
1.320 djm 2112: int i, was_explicit_key, was_sha1, was_sha256, was_hash, r;
1.223 djm 2113: FILE *krl_spec;
2114:
2115: path = tilde_expand_filename(file, pw->pw_uid);
2116: if (strcmp(path, "-") == 0) {
2117: krl_spec = stdin;
2118: free(path);
2119: path = xstrdup("(standard input)");
2120: } else if ((krl_spec = fopen(path, "r")) == NULL)
2121: fatal("fopen %s: %s", path, strerror(errno));
2122:
2123: if (!quiet)
2124: printf("Revoking from %s\n", path);
1.317 markus 2125: while (getline(&line, &linesize, krl_spec) != -1) {
2126: lnum++;
1.320 djm 2127: was_explicit_key = was_sha1 = was_sha256 = was_hash = 0;
1.223 djm 2128: cp = line + strspn(line, " \t");
2129: /* Trim trailing space, comments and strip \n */
2130: for (i = 0, r = -1; cp[i] != '\0'; i++) {
2131: if (cp[i] == '#' || cp[i] == '\n') {
2132: cp[i] = '\0';
2133: break;
2134: }
2135: if (cp[i] == ' ' || cp[i] == '\t') {
2136: /* Remember the start of a span of whitespace */
2137: if (r == -1)
2138: r = i;
2139: } else
2140: r = -1;
2141: }
2142: if (r != -1)
2143: cp[r] = '\0';
2144: if (*cp == '\0')
2145: continue;
2146: if (strncasecmp(cp, "serial:", 7) == 0) {
1.261 djm 2147: if (ca == NULL && !wild_ca) {
1.231 djm 2148: fatal("revoking certificates by serial number "
1.223 djm 2149: "requires specification of a CA key");
2150: }
2151: cp += 7;
2152: cp = cp + strspn(cp, " \t");
2153: errno = 0;
2154: serial = strtoull(cp, &ep, 0);
2155: if (*cp == '\0' || (*ep != '\0' && *ep != '-'))
2156: fatal("%s:%lu: invalid serial \"%s\"",
2157: path, lnum, cp);
2158: if (errno == ERANGE && serial == ULLONG_MAX)
2159: fatal("%s:%lu: serial out of range",
2160: path, lnum);
2161: serial2 = serial;
2162: if (*ep == '-') {
2163: cp = ep + 1;
2164: errno = 0;
2165: serial2 = strtoull(cp, &ep, 0);
2166: if (*cp == '\0' || *ep != '\0')
2167: fatal("%s:%lu: invalid serial \"%s\"",
2168: path, lnum, cp);
2169: if (errno == ERANGE && serial2 == ULLONG_MAX)
2170: fatal("%s:%lu: serial out of range",
2171: path, lnum);
2172: if (serial2 <= serial)
2173: fatal("%s:%lu: invalid serial range "
2174: "%llu:%llu", path, lnum,
2175: (unsigned long long)serial,
2176: (unsigned long long)serial2);
2177: }
2178: if (ssh_krl_revoke_cert_by_serial_range(krl,
2179: ca, serial, serial2) != 0) {
2180: fatal("%s: revoke serial failed",
2181: __func__);
2182: }
2183: } else if (strncasecmp(cp, "id:", 3) == 0) {
1.261 djm 2184: if (ca == NULL && !wild_ca) {
1.232 djm 2185: fatal("revoking certificates by key ID "
1.223 djm 2186: "requires specification of a CA key");
2187: }
2188: cp += 3;
2189: cp = cp + strspn(cp, " \t");
2190: if (ssh_krl_revoke_cert_by_key_id(krl, ca, cp) != 0)
2191: fatal("%s: revoke key ID failed", __func__);
1.320 djm 2192: } else if (strncasecmp(cp, "hash:", 5) == 0) {
2193: cp += 5;
2194: cp = cp + strspn(cp, " \t");
2195: hash_to_blob(cp, &blob, &blen, file, lnum);
2196: r = ssh_krl_revoke_key_sha256(krl, blob, blen);
1.223 djm 2197: } else {
2198: if (strncasecmp(cp, "key:", 4) == 0) {
2199: cp += 4;
2200: cp = cp + strspn(cp, " \t");
2201: was_explicit_key = 1;
2202: } else if (strncasecmp(cp, "sha1:", 5) == 0) {
2203: cp += 5;
2204: cp = cp + strspn(cp, " \t");
2205: was_sha1 = 1;
1.320 djm 2206: } else if (strncasecmp(cp, "sha256:", 7) == 0) {
2207: cp += 7;
2208: cp = cp + strspn(cp, " \t");
2209: was_sha256 = 1;
1.223 djm 2210: /*
2211: * Just try to process the line as a key.
2212: * Parsing will fail if it isn't.
2213: */
2214: }
1.252 djm 2215: if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
1.304 markus 2216: fatal("sshkey_new");
1.252 djm 2217: if ((r = sshkey_read(key, &cp)) != 0)
2218: fatal("%s:%lu: invalid key: %s",
2219: path, lnum, ssh_err(r));
1.223 djm 2220: if (was_explicit_key)
2221: r = ssh_krl_revoke_key_explicit(krl, key);
1.320 djm 2222: else if (was_sha1) {
2223: if (sshkey_fingerprint_raw(key,
2224: SSH_DIGEST_SHA1, &blob, &blen) != 0) {
2225: fatal("%s:%lu: fingerprint failed",
2226: file, lnum);
2227: }
2228: r = ssh_krl_revoke_key_sha1(krl, blob, blen);
2229: } else if (was_sha256) {
2230: if (sshkey_fingerprint_raw(key,
2231: SSH_DIGEST_SHA256, &blob, &blen) != 0) {
2232: fatal("%s:%lu: fingerprint failed",
2233: file, lnum);
2234: }
2235: r = ssh_krl_revoke_key_sha256(krl, blob, blen);
2236: } else
1.223 djm 2237: r = ssh_krl_revoke_key(krl, key);
2238: if (r != 0)
1.252 djm 2239: fatal("%s: revoke key failed: %s",
2240: __func__, ssh_err(r));
1.320 djm 2241: freezero(blob, blen);
2242: blob = NULL;
2243: blen = 0;
1.252 djm 2244: sshkey_free(key);
1.223 djm 2245: }
2246: }
2247: if (strcmp(path, "-") != 0)
2248: fclose(krl_spec);
1.317 markus 2249: free(line);
1.226 djm 2250: free(path);
1.223 djm 2251: }
2252:
2253: static void
1.325 ! djm 2254: do_gen_krl(struct passwd *pw, int updating, const char *ca_key_path,
! 2255: unsigned long long krl_version, const char *krl_comment,
! 2256: int argc, char **argv)
1.223 djm 2257: {
2258: struct ssh_krl *krl;
2259: struct stat sb;
1.252 djm 2260: struct sshkey *ca = NULL;
1.261 djm 2261: int fd, i, r, wild_ca = 0;
1.223 djm 2262: char *tmp;
1.252 djm 2263: struct sshbuf *kbuf;
1.223 djm 2264:
2265: if (*identity_file == '\0')
2266: fatal("KRL generation requires an output file");
2267: if (stat(identity_file, &sb) == -1) {
2268: if (errno != ENOENT)
2269: fatal("Cannot access KRL \"%s\": %s",
2270: identity_file, strerror(errno));
2271: if (updating)
2272: fatal("KRL \"%s\" does not exist", identity_file);
2273: }
2274: if (ca_key_path != NULL) {
1.261 djm 2275: if (strcasecmp(ca_key_path, "none") == 0)
2276: wild_ca = 1;
2277: else {
2278: tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
2279: if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)
2280: fatal("Cannot load CA public key %s: %s",
2281: tmp, ssh_err(r));
2282: free(tmp);
2283: }
1.223 djm 2284: }
2285:
2286: if (updating)
2287: load_krl(identity_file, &krl);
2288: else if ((krl = ssh_krl_init()) == NULL)
2289: fatal("couldn't create KRL");
2290:
1.325 ! djm 2291: if (krl_version != 0)
! 2292: ssh_krl_set_version(krl, krl_version);
! 2293: if (krl_comment != NULL)
! 2294: ssh_krl_set_comment(krl, krl_comment);
1.223 djm 2295:
2296: for (i = 0; i < argc; i++)
1.261 djm 2297: update_krl_from_file(pw, argv[i], wild_ca, ca, krl);
1.223 djm 2298:
1.252 djm 2299: if ((kbuf = sshbuf_new()) == NULL)
2300: fatal("sshbuf_new failed");
2301: if (ssh_krl_to_blob(krl, kbuf, NULL, 0) != 0)
1.223 djm 2302: fatal("Couldn't generate KRL");
2303: if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
2304: fatal("open %s: %s", identity_file, strerror(errno));
1.318 markus 2305: if (atomicio(vwrite, fd, sshbuf_mutable_ptr(kbuf), sshbuf_len(kbuf)) !=
1.252 djm 2306: sshbuf_len(kbuf))
1.223 djm 2307: fatal("write %s: %s", identity_file, strerror(errno));
2308: close(fd);
1.252 djm 2309: sshbuf_free(kbuf);
1.223 djm 2310: ssh_krl_free(krl);
1.286 mmcc 2311: sshkey_free(ca);
1.223 djm 2312: }
2313:
2314: static void
2315: do_check_krl(struct passwd *pw, int argc, char **argv)
2316: {
2317: int i, r, ret = 0;
2318: char *comment;
2319: struct ssh_krl *krl;
1.252 djm 2320: struct sshkey *k;
1.223 djm 2321:
2322: if (*identity_file == '\0')
2323: fatal("KRL checking requires an input file");
2324: load_krl(identity_file, &krl);
2325: for (i = 0; i < argc; i++) {
1.252 djm 2326: if ((r = sshkey_load_public(argv[i], &k, &comment)) != 0)
2327: fatal("Cannot load public key %s: %s",
2328: argv[i], ssh_err(r));
1.223 djm 2329: r = ssh_krl_check_key(krl, k);
2330: printf("%s%s%s%s: %s\n", argv[i],
2331: *comment ? " (" : "", comment, *comment ? ")" : "",
2332: r == 0 ? "ok" : "REVOKED");
2333: if (r != 0)
2334: ret = 1;
1.252 djm 2335: sshkey_free(k);
1.223 djm 2336: free(comment);
2337: }
2338: ssh_krl_free(krl);
2339: exit(ret);
2340: }
1.246 markus 2341: #endif
1.223 djm 2342:
2343: static void
1.10 markus 2344: usage(void)
2345: {
1.243 deraadt 2346: fprintf(stderr,
1.324 djm 2347: "usage: ssh-keygen [-q] [-b bits] [-t dsa | ecdsa | ed25519 | rsa] [-m format]\n"
1.243 deraadt 2348: " [-N new_passphrase] [-C comment] [-f output_keyfile]\n"
1.324 djm 2349: " ssh-keygen -p [-P old_passphrase] [-N new_passphrase] [-m format]\n"
2350: " [-f keyfile]\n"
1.243 deraadt 2351: " ssh-keygen -i [-m key_format] [-f input_keyfile]\n"
2352: " ssh-keygen -e [-m key_format] [-f input_keyfile]\n"
2353: " ssh-keygen -y [-f input_keyfile]\n"
2354: " ssh-keygen -c [-P passphrase] [-C comment] [-f keyfile]\n"
1.265 naddy 2355: " ssh-keygen -l [-v] [-E fingerprint_hash] [-f input_keyfile]\n"
1.302 djm 2356: " ssh-keygen -B [-f input_keyfile]\n");
1.177 markus 2357: #ifdef ENABLE_PKCS11
1.243 deraadt 2358: fprintf(stderr,
2359: " ssh-keygen -D pkcs11\n");
1.177 markus 2360: #endif
1.243 deraadt 2361: fprintf(stderr,
2362: " ssh-keygen -F hostname [-f known_hosts_file] [-l]\n"
2363: " ssh-keygen -H [-f known_hosts_file]\n"
2364: " ssh-keygen -R hostname [-f known_hosts_file]\n"
2365: " ssh-keygen -r hostname [-f input_keyfile] [-g]\n"
1.274 djm 2366: #ifdef WITH_OPENSSL
1.243 deraadt 2367: " ssh-keygen -G output_file [-v] [-b bits] [-M memory] [-S start_point]\n"
2368: " ssh-keygen -T output_file -f input_file [-v] [-a rounds] [-J num_lines]\n"
2369: " [-j start_line] [-K checkpt] [-W generator]\n"
1.274 djm 2370: #endif
1.305 djm 2371: " ssh-keygen -s ca_key -I certificate_identity [-h] [-U]\n"
2372: " [-D pkcs11_provider] [-n principals] [-O option]\n"
2373: " [-V validity_interval] [-z serial_number] file ...\n"
1.243 deraadt 2374: " ssh-keygen -L [-f input_keyfile]\n"
2375: " ssh-keygen -A\n"
2376: " ssh-keygen -k -f krl_file [-u] [-s ca_public] [-z version_number]\n"
2377: " file ...\n"
2378: " ssh-keygen -Q -f krl_file file ...\n");
1.12 markus 2379: exit(1);
1.10 markus 2380: }
2381:
1.13 deraadt 2382: /*
2383: * Main program for key management.
2384: */
1.2 provos 2385: int
1.156 deraadt 2386: main(int argc, char **argv)
1.1 deraadt 2387: {
1.253 deraadt 2388: char dotsshdir[PATH_MAX], comment[1024], *passphrase1, *passphrase2;
1.274 djm 2389: char *rr_hostname = NULL, *ep, *fp, *ra;
1.252 djm 2390: struct sshkey *private, *public;
1.12 markus 2391: struct passwd *pw;
2392: struct stat st;
1.252 djm 2393: int r, opt, type, fd;
1.325 ! djm 2394: int change_passphrase = 0, change_comment = 0, show_cert = 0;
! 2395: int find_host = 0, delete_host = 0, hash_hosts = 0;
1.274 djm 2396: int gen_all_hostkeys = 0, gen_krl = 0, update_krl = 0, check_krl = 0;
1.325 ! djm 2397: int prefer_agent = 0, convert_to = 0, convert_from = 0;
! 2398: int print_public = 0, print_generic = 0;
! 2399: unsigned long long cert_serial = 0;
! 2400: char *identity_comment = NULL, *ca_key_path = NULL;
! 2401: u_int bits = 0;
1.274 djm 2402: FILE *f;
2403: const char *errstr;
1.325 ! djm 2404: int log_level = SYSLOG_LEVEL_INFO;
1.274 djm 2405: #ifdef WITH_OPENSSL
2406: /* Moduli generation/screening */
2407: char out_file[PATH_MAX], *checkpoint = NULL;
1.237 markus 2408: u_int32_t memory = 0, generator_wanted = 0;
1.107 djm 2409: int do_gen_candidates = 0, do_screen_candidates = 0;
1.215 dtucker 2410: unsigned long start_lineno = 0, lines_to_process = 0;
1.107 djm 2411: BIGNUM *start = NULL;
1.274 djm 2412: #endif
1.33 markus 2413:
1.12 markus 2414: extern int optind;
2415: extern char *optarg;
1.129 djm 2416:
1.288 dtucker 2417: ssh_malloc_init(); /* must be called before any mallocs */
1.129 djm 2418: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
2419: sanitise_stdfd();
1.12 markus 2420:
1.201 djm 2421: OpenSSL_add_all_algorithms();
1.156 deraadt 2422: log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
1.294 djm 2423:
2424: setlocale(LC_CTYPE, "");
1.19 markus 2425:
1.14 markus 2426: /* we need this for the home * directory. */
1.12 markus 2427: pw = getpwuid(getuid());
1.269 djm 2428: if (!pw)
2429: fatal("No user exists for uid %lu", (u_long)getuid());
2430: if (gethostname(hostname, sizeof(hostname)) < 0)
2431: fatal("gethostname: %s", strerror(errno));
1.14 markus 2432:
1.305 djm 2433: /* Remaining characters: Ydw */
2434: while ((opt = getopt(argc, argv, "ABHLQUXceghiklopquvxy"
1.251 djm 2435: "C:D:E:F:G:I:J:K:M:N:O:P:R:S:T:V:W:Z:"
2436: "a:b:f:g:j:m:n:r:s:t:z:")) != -1) {
1.12 markus 2437: switch (opt) {
1.206 stevesk 2438: case 'A':
2439: gen_all_hostkeys = 1;
2440: break;
1.12 markus 2441: case 'b':
1.313 markus 2442: bits = (u_int32_t)strtonum(optarg, 10, 32768, &errstr);
1.125 avsm 2443: if (errstr)
2444: fatal("Bits has bad value %s (%s)",
2445: optarg, errstr);
1.12 markus 2446: break;
1.251 djm 2447: case 'E':
2448: fingerprint_hash = ssh_digest_alg_by_name(optarg);
2449: if (fingerprint_hash == -1)
2450: fatal("Invalid hash algorithm \"%s\"", optarg);
2451: break;
1.119 djm 2452: case 'F':
2453: find_host = 1;
2454: rr_hostname = optarg;
2455: break;
2456: case 'H':
2457: hash_hosts = 1;
2458: break;
1.179 djm 2459: case 'I':
2460: cert_key_id = optarg;
2461: break;
1.119 djm 2462: case 'R':
2463: delete_host = 1;
2464: rr_hostname = optarg;
2465: break;
1.182 djm 2466: case 'L':
2467: show_cert = 1;
2468: break;
1.12 markus 2469: case 'l':
2470: print_fingerprint = 1;
2471: break;
1.49 markus 2472: case 'B':
2473: print_bubblebabble = 1;
2474: break;
1.193 djm 2475: case 'm':
2476: if (strcasecmp(optarg, "RFC4716") == 0 ||
2477: strcasecmp(optarg, "ssh2") == 0) {
2478: convert_format = FMT_RFC4716;
2479: break;
2480: }
2481: if (strcasecmp(optarg, "PKCS8") == 0) {
2482: convert_format = FMT_PKCS8;
2483: break;
2484: }
2485: if (strcasecmp(optarg, "PEM") == 0) {
2486: convert_format = FMT_PEM;
1.319 djm 2487: use_new_format = 0;
1.193 djm 2488: break;
2489: }
2490: fatal("Unsupported conversion format \"%s\"", optarg);
1.179 djm 2491: case 'n':
2492: cert_principals = optarg;
2493: break;
1.237 markus 2494: case 'o':
1.319 djm 2495: /* no-op; new format is already the default */
1.237 markus 2496: break;
1.12 markus 2497: case 'p':
2498: change_passphrase = 1;
2499: break;
2500: case 'c':
2501: change_comment = 1;
2502: break;
2503: case 'f':
1.274 djm 2504: if (strlcpy(identity_file, optarg,
2505: sizeof(identity_file)) >= sizeof(identity_file))
1.124 avsm 2506: fatal("Identity filename too long");
1.12 markus 2507: have_identity = 1;
2508: break;
1.105 jakob 2509: case 'g':
2510: print_generic = 1;
2511: break;
1.12 markus 2512: case 'P':
2513: identity_passphrase = optarg;
2514: break;
2515: case 'N':
2516: identity_new_passphrase = optarg;
2517: break;
1.223 djm 2518: case 'Q':
2519: check_krl = 1;
2520: break;
1.179 djm 2521: case 'O':
1.186 djm 2522: add_cert_option(optarg);
1.179 djm 2523: break;
1.237 markus 2524: case 'Z':
2525: new_format_cipher = optarg;
2526: break;
1.12 markus 2527: case 'C':
2528: identity_comment = optarg;
2529: break;
2530: case 'q':
2531: quiet = 1;
1.20 deraadt 2532: break;
1.57 markus 2533: case 'e':
1.19 markus 2534: case 'x':
1.57 markus 2535: /* export key */
1.193 djm 2536: convert_to = 1;
1.19 markus 2537: break;
1.179 djm 2538: case 'h':
2539: cert_key_type = SSH2_CERT_TYPE_HOST;
1.190 djm 2540: certflags_flags = 0;
1.179 djm 2541: break;
1.223 djm 2542: case 'k':
2543: gen_krl = 1;
2544: break;
1.57 markus 2545: case 'i':
1.19 markus 2546: case 'X':
1.57 markus 2547: /* import key */
1.193 djm 2548: convert_from = 1;
1.19 markus 2549: break;
2550: case 'y':
2551: print_public = 1;
2552: break;
1.179 djm 2553: case 's':
2554: ca_key_path = optarg;
2555: break;
1.33 markus 2556: case 't':
2557: key_type_name = optarg;
2558: break;
1.75 markus 2559: case 'D':
1.177 markus 2560: pkcs11provider = optarg;
1.305 djm 2561: break;
2562: case 'U':
2563: prefer_agent = 1;
1.66 markus 2564: break;
1.223 djm 2565: case 'u':
2566: update_krl = 1;
2567: break;
1.113 djm 2568: case 'v':
2569: if (log_level == SYSLOG_LEVEL_INFO)
2570: log_level = SYSLOG_LEVEL_DEBUG1;
2571: else {
1.117 deraadt 2572: if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
1.113 djm 2573: log_level < SYSLOG_LEVEL_DEBUG3)
2574: log_level++;
2575: }
2576: break;
1.105 jakob 2577: case 'r':
1.119 djm 2578: rr_hostname = optarg;
1.105 jakob 2579: break;
1.107 djm 2580: case 'a':
1.237 markus 2581: rounds = (int)strtonum(optarg, 1, INT_MAX, &errstr);
1.124 avsm 2582: if (errstr)
1.237 markus 2583: fatal("Invalid number: %s (%s)",
1.124 avsm 2584: optarg, errstr);
1.107 djm 2585: break;
1.274 djm 2586: case 'V':
2587: parse_cert_times(optarg);
2588: break;
2589: case 'z':
2590: errno = 0;
2591: cert_serial = strtoull(optarg, &ep, 10);
2592: if (*optarg < '0' || *optarg > '9' || *ep != '\0' ||
2593: (errno == ERANGE && cert_serial == ULLONG_MAX))
2594: fatal("Invalid serial number \"%s\"", optarg);
1.107 djm 2595: break;
1.274 djm 2596: #ifdef WITH_OPENSSL
2597: /* Moduli generation/screening */
1.107 djm 2598: case 'G':
2599: do_gen_candidates = 1;
1.124 avsm 2600: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2601: sizeof(out_file))
2602: fatal("Output filename too long");
1.107 djm 2603: break;
1.274 djm 2604: case 'J':
2605: lines_to_process = strtoul(optarg, NULL, 10);
1.292 dtucker 2606: break;
1.274 djm 2607: case 'j':
2608: start_lineno = strtoul(optarg, NULL, 10);
1.292 dtucker 2609: break;
1.211 dtucker 2610: case 'K':
1.253 deraadt 2611: if (strlen(optarg) >= PATH_MAX)
1.211 dtucker 2612: fatal("Checkpoint filename too long");
2613: checkpoint = xstrdup(optarg);
2614: break;
1.274 djm 2615: case 'M':
2616: memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX,
2617: &errstr);
2618: if (errstr)
2619: fatal("Memory limit is %s: %s", errstr, optarg);
2620: break;
1.107 djm 2621: case 'S':
2622: /* XXX - also compare length against bits */
2623: if (BN_hex2bn(&start, optarg) == 0)
2624: fatal("Invalid start point.");
2625: break;
1.274 djm 2626: case 'T':
2627: do_screen_candidates = 1;
2628: if (strlcpy(out_file, optarg, sizeof(out_file)) >=
2629: sizeof(out_file))
2630: fatal("Output filename too long");
1.186 djm 2631: break;
1.274 djm 2632: case 'W':
2633: generator_wanted = (u_int32_t)strtonum(optarg, 1,
2634: UINT_MAX, &errstr);
2635: if (errstr != NULL)
2636: fatal("Desired generator invalid: %s (%s)",
2637: optarg, errstr);
1.179 djm 2638: break;
1.274 djm 2639: #endif /* WITH_OPENSSL */
1.12 markus 2640: case '?':
2641: default:
2642: usage();
2643: }
2644: }
1.113 djm 2645:
2646: /* reinit */
1.156 deraadt 2647: log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
1.113 djm 2648:
1.179 djm 2649: argv += optind;
2650: argc -= optind;
2651:
2652: if (ca_key_path != NULL) {
1.223 djm 2653: if (argc < 1 && !gen_krl) {
1.269 djm 2654: error("Too few arguments.");
1.179 djm 2655: usage();
2656: }
1.223 djm 2657: } else if (argc > 0 && !gen_krl && !check_krl) {
1.269 djm 2658: error("Too many arguments.");
1.87 djm 2659: usage();
2660: }
1.12 markus 2661: if (change_passphrase && change_comment) {
1.269 djm 2662: error("Can only have one of -p and -c.");
1.166 djm 2663: usage();
2664: }
2665: if (print_fingerprint && (delete_host || hash_hosts)) {
1.269 djm 2666: error("Cannot use -l with -H or -R.");
1.12 markus 2667: usage();
1.223 djm 2668: }
1.246 markus 2669: #ifdef WITH_OPENSSL
1.223 djm 2670: if (gen_krl) {
1.325 ! djm 2671: do_gen_krl(pw, update_krl, ca_key_path,
! 2672: cert_serial, identity_comment, argc, argv);
1.223 djm 2673: return (0);
2674: }
2675: if (check_krl) {
2676: do_check_krl(pw, argc, argv);
2677: return (0);
1.179 djm 2678: }
1.246 markus 2679: #endif
1.179 djm 2680: if (ca_key_path != NULL) {
2681: if (cert_key_id == NULL)
2682: fatal("Must specify key id (-I) when certifying");
1.325 ! djm 2683: do_ca_sign(pw, ca_key_path, prefer_agent, cert_serial,
! 2684: argc, argv);
1.12 markus 2685: }
1.182 djm 2686: if (show_cert)
2687: do_show_cert(pw);
1.325 ! djm 2688: if (delete_host || hash_hosts || find_host) {
! 2689: do_known_hosts(pw, rr_hostname, find_host,
! 2690: delete_host, hash_hosts);
! 2691: }
1.221 djm 2692: if (pkcs11provider != NULL)
2693: do_download(pw);
1.49 markus 2694: if (print_fingerprint || print_bubblebabble)
1.12 markus 2695: do_fingerprint(pw);
2696: if (change_passphrase)
2697: do_change_passphrase(pw);
2698: if (change_comment)
1.325 ! djm 2699: do_change_comment(pw, identity_comment);
1.246 markus 2700: #ifdef WITH_OPENSSL
1.193 djm 2701: if (convert_to)
2702: do_convert_to(pw);
2703: if (convert_from)
2704: do_convert_from(pw);
1.246 markus 2705: #endif
1.19 markus 2706: if (print_public)
2707: do_print_public(pw);
1.119 djm 2708: if (rr_hostname != NULL) {
1.138 jakob 2709: unsigned int n = 0;
2710:
2711: if (have_identity) {
1.325 ! djm 2712: n = do_print_resource_record(pw, identity_file,
! 2713: rr_hostname, print_generic);
1.269 djm 2714: if (n == 0)
2715: fatal("%s: %s", identity_file, strerror(errno));
1.138 jakob 2716: exit(0);
2717: } else {
2718:
2719: n += do_print_resource_record(pw,
1.325 ! djm 2720: _PATH_HOST_RSA_KEY_FILE, rr_hostname,
! 2721: print_generic);
1.138 jakob 2722: n += do_print_resource_record(pw,
1.325 ! djm 2723: _PATH_HOST_DSA_KEY_FILE, rr_hostname,
! 2724: print_generic);
1.214 djm 2725: n += do_print_resource_record(pw,
1.325 ! djm 2726: _PATH_HOST_ECDSA_KEY_FILE, rr_hostname,
! 2727: print_generic);
1.244 logan 2728: n += do_print_resource_record(pw,
1.325 ! djm 2729: _PATH_HOST_ED25519_KEY_FILE, rr_hostname,
! 2730: print_generic);
1.313 markus 2731: n += do_print_resource_record(pw,
1.325 ! djm 2732: _PATH_HOST_XMSS_KEY_FILE, rr_hostname,
! 2733: print_generic);
1.138 jakob 2734: if (n == 0)
2735: fatal("no keys found.");
2736: exit(0);
2737: }
1.105 jakob 2738: }
1.107 djm 2739:
1.274 djm 2740: #ifdef WITH_OPENSSL
1.107 djm 2741: if (do_gen_candidates) {
2742: FILE *out = fopen(out_file, "w");
1.111 djm 2743:
1.107 djm 2744: if (out == NULL) {
2745: error("Couldn't open modulus candidate file \"%s\": %s",
2746: out_file, strerror(errno));
2747: return (1);
2748: }
1.130 markus 2749: if (bits == 0)
2750: bits = DEFAULT_BITS;
1.107 djm 2751: if (gen_candidates(out, memory, bits, start) != 0)
1.131 stevesk 2752: fatal("modulus candidate generation failed");
1.107 djm 2753:
2754: return (0);
2755: }
2756:
2757: if (do_screen_candidates) {
2758: FILE *in;
1.225 djm 2759: FILE *out = fopen(out_file, "a");
1.107 djm 2760:
2761: if (have_identity && strcmp(identity_file, "-") != 0) {
2762: if ((in = fopen(identity_file, "r")) == NULL) {
2763: fatal("Couldn't open modulus candidate "
1.111 djm 2764: "file \"%s\": %s", identity_file,
1.107 djm 2765: strerror(errno));
2766: }
2767: } else
2768: in = stdin;
2769:
2770: if (out == NULL) {
2771: fatal("Couldn't open moduli file \"%s\": %s",
2772: out_file, strerror(errno));
2773: }
1.237 markus 2774: if (prime_test(in, out, rounds == 0 ? 100 : rounds,
2775: generator_wanted, checkpoint,
1.215 dtucker 2776: start_lineno, lines_to_process) != 0)
1.131 stevesk 2777: fatal("modulus screening failed");
1.108 markus 2778: return (0);
1.75 markus 2779: }
1.274 djm 2780: #endif
1.12 markus 2781:
1.206 stevesk 2782: if (gen_all_hostkeys) {
2783: do_gen_all_hostkeys(pw);
2784: return (0);
2785: }
2786:
1.133 djm 2787: if (key_type_name == NULL)
1.273 djm 2788: key_type_name = DEFAULT_KEY_TYPE_NAME;
1.133 djm 2789:
1.252 djm 2790: type = sshkey_type_from_name(key_type_name);
1.255 djm 2791: type_bits_valid(type, key_type_name, &bits);
1.206 stevesk 2792:
1.33 markus 2793: if (!quiet)
1.252 djm 2794: printf("Generating public/private %s key pair.\n",
2795: key_type_name);
1.269 djm 2796: if ((r = sshkey_generate(type, bits, &private)) != 0)
1.304 markus 2797: fatal("sshkey_generate failed");
1.269 djm 2798: if ((r = sshkey_from_private(private, &public)) != 0)
1.304 markus 2799: fatal("sshkey_from_private failed: %s\n", ssh_err(r));
1.12 markus 2800:
2801: if (!have_identity)
2802: ask_filename(pw, "Enter file in which to save the key");
2803:
1.132 djm 2804: /* Create ~/.ssh directory if it doesn't already exist. */
1.188 djm 2805: snprintf(dotsshdir, sizeof dotsshdir, "%s/%s",
2806: pw->pw_dir, _PATH_SSH_USER_DIR);
2807: if (strstr(identity_file, dotsshdir) != NULL) {
2808: if (stat(dotsshdir, &st) < 0) {
2809: if (errno != ENOENT) {
2810: error("Could not stat %s: %s", dotsshdir,
2811: strerror(errno));
2812: } else if (mkdir(dotsshdir, 0700) < 0) {
2813: error("Could not create directory '%s': %s",
2814: dotsshdir, strerror(errno));
2815: } else if (!quiet)
2816: printf("Created directory '%s'.\n", dotsshdir);
2817: }
1.12 markus 2818: }
2819: /* If the file already exists, ask the user to confirm. */
2820: if (stat(identity_file, &st) >= 0) {
2821: char yesno[3];
2822: printf("%s already exists.\n", identity_file);
2823: printf("Overwrite (y/n)? ");
2824: fflush(stdout);
2825: if (fgets(yesno, sizeof(yesno), stdin) == NULL)
2826: exit(1);
2827: if (yesno[0] != 'y' && yesno[0] != 'Y')
2828: exit(1);
2829: }
2830: /* Ask for a passphrase (twice). */
2831: if (identity_passphrase)
2832: passphrase1 = xstrdup(identity_passphrase);
2833: else if (identity_new_passphrase)
2834: passphrase1 = xstrdup(identity_new_passphrase);
2835: else {
2836: passphrase_again:
2837: passphrase1 =
1.65 markus 2838: read_passphrase("Enter passphrase (empty for no "
2839: "passphrase): ", RP_ALLOW_STDIN);
2840: passphrase2 = read_passphrase("Enter same passphrase again: ",
2841: RP_ALLOW_STDIN);
1.12 markus 2842: if (strcmp(passphrase1, passphrase2) != 0) {
1.65 markus 2843: /*
2844: * The passphrases do not match. Clear them and
2845: * retry.
2846: */
1.240 djm 2847: explicit_bzero(passphrase1, strlen(passphrase1));
2848: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 2849: free(passphrase1);
2850: free(passphrase2);
1.12 markus 2851: printf("Passphrases do not match. Try again.\n");
2852: goto passphrase_again;
2853: }
2854: /* Clear the other copy of the passphrase. */
1.240 djm 2855: explicit_bzero(passphrase2, strlen(passphrase2));
1.227 djm 2856: free(passphrase2);
1.12 markus 2857: }
2858:
2859: if (identity_comment) {
2860: strlcpy(comment, identity_comment, sizeof(comment));
2861: } else {
1.172 stevesk 2862: /* Create default comment field for the passphrase. */
1.12 markus 2863: snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
2864: }
2865:
2866: /* Save the key with the given passphrase and comment. */
1.252 djm 2867: if ((r = sshkey_save_private(private, identity_file, passphrase1,
2868: comment, use_new_format, new_format_cipher, rounds)) != 0) {
1.269 djm 2869: error("Saving key \"%s\" failed: %s",
1.252 djm 2870: identity_file, ssh_err(r));
1.240 djm 2871: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 2872: free(passphrase1);
1.12 markus 2873: exit(1);
2874: }
2875: /* Clear the passphrase. */
1.240 djm 2876: explicit_bzero(passphrase1, strlen(passphrase1));
1.227 djm 2877: free(passphrase1);
1.12 markus 2878:
2879: /* Clear the private key and the random number generator. */
1.252 djm 2880: sshkey_free(private);
1.12 markus 2881:
2882: if (!quiet)
2883: printf("Your identification has been saved in %s.\n", identity_file);
2884:
2885: strlcat(identity_file, ".pub", sizeof(identity_file));
1.269 djm 2886: if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
2887: fatal("Unable to save public key to %s: %s",
2888: identity_file, strerror(errno));
2889: if ((f = fdopen(fd, "w")) == NULL)
2890: fatal("fdopen %s failed: %s", identity_file, strerror(errno));
1.252 djm 2891: if ((r = sshkey_write(public, f)) != 0)
1.269 djm 2892: error("write key failed: %s", ssh_err(r));
1.19 markus 2893: fprintf(f, " %s\n", comment);
1.311 djm 2894: if (ferror(f) || fclose(f) != 0)
2895: fatal("write public failed: %s", strerror(errno));
1.12 markus 2896:
2897: if (!quiet) {
1.259 djm 2898: fp = sshkey_fingerprint(public, fingerprint_hash,
1.251 djm 2899: SSH_FP_DEFAULT);
1.259 djm 2900: ra = sshkey_fingerprint(public, fingerprint_hash,
1.167 grunk 2901: SSH_FP_RANDOMART);
1.259 djm 2902: if (fp == NULL || ra == NULL)
2903: fatal("sshkey_fingerprint failed");
1.19 markus 2904: printf("Your public key has been saved in %s.\n",
2905: identity_file);
1.12 markus 2906: printf("The key fingerprint is:\n");
1.50 markus 2907: printf("%s %s\n", fp, comment);
1.167 grunk 2908: printf("The key's randomart image is:\n");
2909: printf("%s\n", ra);
1.227 djm 2910: free(ra);
2911: free(fp);
1.12 markus 2912: }
1.19 markus 2913:
1.252 djm 2914: sshkey_free(public);
1.12 markus 2915: exit(0);
1.1 deraadt 2916: }
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