Annotation of src/usr.bin/ssh/ssh.c, Revision 1.135
1.1 deraadt 1: /*
1.32 deraadt 2: * Author: Tatu Ylonen <ylo@cs.hut.fi>
3: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4: * All rights reserved
5: * Ssh client program. This program can be used to log into a remote machine.
6: * The software supports strong authentication, encryption, and forwarding
7: * of X11, TCP/IP, and authentication connections.
8: *
1.64 deraadt 9: * As far as I am concerned, the code I have written for this software
10: * can be used freely for any purpose. Any derived versions of this
11: * software must be clearly marked as such, and if the derived work is
12: * incompatible with the protocol description in the RFC file, it must be
13: * called by a name other than "ssh" or "Secure Shell".
14: *
15: * Copyright (c) 1999 Niels Provos. All rights reserved.
16: *
17: * Modified to work with SSL by Niels Provos <provos@citi.umich.edu>
18: * in Canada (German citizen).
19: *
20: * Redistribution and use in source and binary forms, with or without
21: * modification, are permitted provided that the following conditions
22: * are met:
23: * 1. Redistributions of source code must retain the above copyright
24: * notice, this list of conditions and the following disclaimer.
25: * 2. Redistributions in binary form must reproduce the above copyright
26: * notice, this list of conditions and the following disclaimer in the
27: * documentation and/or other materials provided with the distribution.
28: *
29: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
30: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
31: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
32: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
33: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
34: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
38: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.32 deraadt 39: */
1.1 deraadt 40:
41: #include "includes.h"
1.135 ! jakob 42: RCSID("$OpenBSD: ssh.c,v 1.134 2001/08/01 23:38:45 markus Exp $");
1.49 markus 43:
44: #include <openssl/evp.h>
1.72 markus 45: #include <openssl/err.h>
1.1 deraadt 46:
1.84 markus 47: #include "ssh.h"
48: #include "ssh1.h"
49: #include "ssh2.h"
50: #include "compat.h"
51: #include "cipher.h"
1.1 deraadt 52: #include "xmalloc.h"
53: #include "packet.h"
54: #include "buffer.h"
55: #include "uidswap.h"
1.123 markus 56: #include "channels.h"
1.49 markus 57: #include "key.h"
1.58 markus 58: #include "authfd.h"
1.49 markus 59: #include "authfile.h"
1.83 markus 60: #include "pathnames.h"
1.81 markus 61: #include "clientloop.h"
1.84 markus 62: #include "log.h"
63: #include "readconf.h"
64: #include "sshconnect.h"
65: #include "tildexpand.h"
1.89 markus 66: #include "dispatch.h"
1.84 markus 67: #include "misc.h"
1.95 markus 68: #include "kex.h"
69: #include "mac.h"
1.115 stevesk 70: #include "sshtty.h"
1.49 markus 71:
1.127 markus 72: #ifdef SMARTCARD
73: #include <openssl/engine.h>
74: #include "scard.h"
75: #endif
76:
1.49 markus 77: extern char *__progname;
1.1 deraadt 78:
1.37 markus 79: /* Flag indicating whether IPv4 or IPv6. This can be set on the command line.
80: Default value is AF_UNSPEC means both IPv4 and IPv6. */
81: int IPv4or6 = AF_UNSPEC;
82:
1.31 markus 83: /* Flag indicating whether debug mode is on. This can be set on the command line. */
1.1 deraadt 84: int debug_flag = 0;
85:
1.46 markus 86: /* Flag indicating whether a tty should be allocated */
1.1 deraadt 87: int tty_flag = 0;
1.79 markus 88: int no_tty_flag = 0;
89: int force_tty_flag = 0;
1.1 deraadt 90:
1.45 markus 91: /* don't exec a shell */
92: int no_shell_flag = 0;
93:
1.33 markus 94: /*
95: * Flag indicating that nothing should be read from stdin. This can be set
96: * on the command line.
97: */
1.1 deraadt 98: int stdin_null_flag = 0;
99:
1.33 markus 100: /*
101: * Flag indicating that ssh should fork after authentication. This is useful
102: * so that the pasphrase can be entered manually, and then ssh goes to the
103: * background.
104: */
1.1 deraadt 105: int fork_after_authentication_flag = 0;
106:
1.33 markus 107: /*
108: * General data structure for command line options and options configurable
109: * in configuration files. See readconf.h.
110: */
1.1 deraadt 111: Options options;
112:
1.33 markus 113: /*
114: * Name of the host we are connecting to. This is the name given on the
115: * command line, or the HostName specified for the user-supplied name in a
116: * configuration file.
117: */
1.1 deraadt 118: char *host;
119:
1.22 provos 120: /* socket address the host resolves to */
1.37 markus 121: struct sockaddr_storage hostaddr;
1.22 provos 122:
1.33 markus 123: /*
124: * Flag to indicate that we have received a window change signal which has
125: * not yet been processed. This will cause a message indicating the new
126: * window size to be sent to the server a little later. This is volatile
127: * because this is updated in a signal handler.
128: */
1.1 deraadt 129: volatile int received_window_change_signal = 0;
130:
1.112 markus 131: /* Private host keys. */
132: struct {
133: Key **keys;
134: int nkeys;
135: } sensitive_data;
1.1 deraadt 136:
1.10 dugsong 137: /* Original real UID. */
138: uid_t original_real_uid;
1.1 deraadt 139:
1.45 markus 140: /* command to be executed */
141: Buffer command;
142:
1.85 djm 143: /* Should we execute a command or invoke a subsystem? */
144: int subsystem_flag = 0;
145:
1.1 deraadt 146: /* Prints a help message to the user. This function never returns. */
147:
1.126 itojun 148: static void
1.93 itojun 149: usage(void)
1.1 deraadt 150: {
1.76 markus 151: fprintf(stderr, "Usage: %s [options] host [command]\n", __progname);
1.31 markus 152: fprintf(stderr, "Options:\n");
153: fprintf(stderr, " -l user Log in using this user name.\n");
1.93 itojun 154: fprintf(stderr, " -n Redirect input from " _PATH_DEVNULL ".\n");
1.53 markus 155: fprintf(stderr, " -A Enable authentication agent forwarding.\n");
1.120 markus 156: fprintf(stderr, " -a Disable authentication agent forwarding (default).\n");
1.9 dugsong 157: #ifdef AFS
1.31 markus 158: fprintf(stderr, " -k Disable Kerberos ticket and AFS token forwarding.\n");
159: #endif /* AFS */
1.88 stevesk 160: fprintf(stderr, " -X Enable X11 connection forwarding.\n");
1.120 markus 161: fprintf(stderr, " -x Disable X11 connection forwarding (default).\n");
1.99 deraadt 162: fprintf(stderr, " -i file Identity for public key authentication "
163: "(default: ~/.ssh/identity)\n");
1.135 ! jakob 164: #ifdef SMARTCARD
! 165: fprintf(stderr, " -I reader Set smartcard reader.\n");
! 166: #endif /* SMARTCARD */
1.31 markus 167: fprintf(stderr, " -t Tty; allocate a tty even if command is given.\n");
1.45 markus 168: fprintf(stderr, " -T Do not allocate a tty.\n");
1.31 markus 169: fprintf(stderr, " -v Verbose; display verbose debugging messages.\n");
1.66 markus 170: fprintf(stderr, " Multiple -v increases verbosity.\n");
1.31 markus 171: fprintf(stderr, " -V Display version number only.\n");
172: fprintf(stderr, " -P Don't allocate a privileged port.\n");
173: fprintf(stderr, " -q Quiet; don't display any warning messages.\n");
174: fprintf(stderr, " -f Fork into background after authentication.\n");
175: fprintf(stderr, " -e char Set escape character; ``none'' = disable (default: ~).\n");
176:
1.120 markus 177: fprintf(stderr, " -c cipher Select encryption algorithm\n");
1.102 stevesk 178: fprintf(stderr, " -m macs Specify MAC algorithms for protocol version 2.\n");
1.31 markus 179: fprintf(stderr, " -p port Connect to this port. Server must be on the same port.\n");
180: fprintf(stderr, " -L listen-port:host:port Forward local port to remote address\n");
181: fprintf(stderr, " -R listen-port:host:port Forward remote port to local address\n");
1.76 markus 182: fprintf(stderr, " These cause %s to listen for connections on a port, and\n", __progname);
1.31 markus 183: fprintf(stderr, " forward them to the other side by connecting to host:port.\n");
184: fprintf(stderr, " -C Enable compression.\n");
1.45 markus 185: fprintf(stderr, " -N Do not execute a shell or command.\n");
1.31 markus 186: fprintf(stderr, " -g Allow remote hosts to connect to forwarded ports.\n");
1.92 jakob 187: fprintf(stderr, " -1 Force protocol version 1.\n");
188: fprintf(stderr, " -2 Force protocol version 2.\n");
1.37 markus 189: fprintf(stderr, " -4 Use IPv4 only.\n");
190: fprintf(stderr, " -6 Use IPv6 only.\n");
1.31 markus 191: fprintf(stderr, " -o 'option' Process the option as if it was read from a configuration file.\n");
1.85 djm 192: fprintf(stderr, " -s Invoke command (mandatory) as SSH2 subsystem.\n");
1.120 markus 193: fprintf(stderr, " -b addr Local IP address.\n");
1.31 markus 194: exit(1);
1.1 deraadt 195: }
196:
1.32 deraadt 197: /*
198: * Connects to the given host using rsh (or prints an error message and exits
199: * if rsh is not available). This function never returns.
200: */
1.126 itojun 201: static void
1.31 markus 202: rsh_connect(char *host, char *user, Buffer * command)
1.1 deraadt 203: {
1.31 markus 204: char *args[10];
205: int i;
206:
207: log("Using rsh. WARNING: Connection will not be encrypted.");
208: /* Build argument list for rsh. */
209: i = 0;
210: args[i++] = _PATH_RSH;
211: /* host may have to come after user on some systems */
212: args[i++] = host;
213: if (user) {
214: args[i++] = "-l";
215: args[i++] = user;
216: }
217: if (buffer_len(command) > 0) {
218: buffer_append(command, "\0", 1);
219: args[i++] = buffer_ptr(command);
220: }
221: args[i++] = NULL;
222: if (debug_flag) {
223: for (i = 0; args[i]; i++) {
224: if (i != 0)
225: fprintf(stderr, " ");
226: fprintf(stderr, "%s", args[i]);
227: }
228: fprintf(stderr, "\n");
229: }
230: execv(_PATH_RSH, args);
231: perror(_PATH_RSH);
232: exit(1);
1.1 deraadt 233: }
234:
1.126 itojun 235: static int ssh_session(void);
236: static int ssh_session2(void);
237: static void load_public_identity_files(void);
1.45 markus 238:
1.32 deraadt 239: /*
240: * Main program for the ssh client.
241: */
1.2 provos 242: int
243: main(int ac, char **av)
1.1 deraadt 244: {
1.130 markus 245: int i, opt, exit_status, cerr;
1.35 markus 246: u_short fwd_port, fwd_host_port;
1.128 fgsch 247: char *p, *cp, buf[256];
1.31 markus 248: struct stat st;
1.98 markus 249: struct passwd *pw;
1.45 markus 250: int dummy;
1.31 markus 251: uid_t original_effective_uid;
252:
1.33 markus 253: /*
254: * Save the original real uid. It will be needed later (uid-swapping
255: * may clobber the real uid).
256: */
1.31 markus 257: original_real_uid = getuid();
258: original_effective_uid = geteuid();
259:
260: /* If we are installed setuid root be careful to not drop core. */
261: if (original_real_uid != original_effective_uid) {
262: struct rlimit rlim;
263: rlim.rlim_cur = rlim.rlim_max = 0;
264: if (setrlimit(RLIMIT_CORE, &rlim) < 0)
265: fatal("setrlimit failed: %.100s", strerror(errno));
1.1 deraadt 266: }
1.107 markus 267: /* Get user data. */
268: pw = getpwuid(original_real_uid);
269: if (!pw) {
270: log("You don't exist, go away!");
271: exit(1);
272: }
273: /* Take a copy of the returned structure. */
274: pw = pwcopy(pw);
275:
1.33 markus 276: /*
277: * Use uid-swapping to give up root privileges for the duration of
278: * option processing. We will re-instantiate the rights when we are
279: * ready to create the privileged port, and will permanently drop
280: * them when the port has been created (actually, when the connection
281: * has been made, as we may need to create the port several times).
282: */
1.107 markus 283: temporarily_use_uid(pw);
1.31 markus 284:
1.33 markus 285: /*
286: * Set our umask to something reasonable, as some files are created
287: * with the default umask. This will make them world-readable but
288: * writable only by the owner, which is ok for all files for which we
289: * don't set the modes explicitly.
290: */
1.31 markus 291: umask(022);
292:
293: /* Initialize option structure to indicate that no values have been set. */
294: initialize_options(&options);
295:
296: /* Parse command-line arguments. */
297: host = NULL;
298:
1.128 fgsch 299: again:
300: while ((opt = getopt(ac, av,
1.129 markus 301: "1246ab:c:e:fgi:kl:m:no:p:qstvxACD:I:L:NPR:TVX")) != -1) {
1.31 markus 302: switch (opt) {
1.91 jakob 303: case '1':
304: options.protocol = SSH_PROTO_1;
305: break;
1.47 markus 306: case '2':
307: options.protocol = SSH_PROTO_2;
308: break;
1.37 markus 309: case '4':
310: IPv4or6 = AF_INET;
311: break;
312: case '6':
313: IPv4or6 = AF_INET6;
314: break;
1.31 markus 315: case 'n':
316: stdin_null_flag = 1;
317: break;
318: case 'f':
319: fork_after_authentication_flag = 1;
320: stdin_null_flag = 1;
321: break;
322: case 'x':
323: options.forward_x11 = 0;
324: break;
325: case 'X':
326: options.forward_x11 = 1;
327: break;
328: case 'g':
329: options.gateway_ports = 1;
330: break;
331: case 'P':
332: options.use_privileged_port = 0;
333: break;
334: case 'a':
335: options.forward_agent = 0;
1.53 markus 336: break;
337: case 'A':
338: options.forward_agent = 1;
1.31 markus 339: break;
1.9 dugsong 340: #ifdef AFS
1.31 markus 341: case 'k':
342: options.kerberos_tgt_passing = 0;
343: options.afs_token_passing = 0;
344: break;
1.1 deraadt 345: #endif
1.31 markus 346: case 'i':
347: if (stat(optarg, &st) < 0) {
1.128 fgsch 348: fprintf(stderr, "Warning: Identity file %s "
349: "does not exist.\n", optarg);
1.31 markus 350: break;
351: }
1.128 fgsch 352: if (options.num_identity_files >=
353: SSH_MAX_IDENTITY_FILES)
354: fatal("Too many identity files specified "
355: "(max %d)", SSH_MAX_IDENTITY_FILES);
356: options.identity_files[options.num_identity_files++] =
357: xstrdup(optarg);
1.31 markus 358: break;
1.127 markus 359: case 'I':
360: #ifdef SMARTCARD
1.133 markus 361: options.smartcard_device = xstrdup(optarg);
1.127 markus 362: #else
363: fprintf(stderr, "no support for smartcards.\n");
364: #endif
365: break;
1.31 markus 366: case 't':
1.79 markus 367: if (tty_flag)
368: force_tty_flag = 1;
1.31 markus 369: tty_flag = 1;
370: break;
371: case 'v':
1.66 markus 372: if (0 == debug_flag) {
373: debug_flag = 1;
374: options.log_level = SYSLOG_LEVEL_DEBUG1;
375: } else if (options.log_level < SYSLOG_LEVEL_DEBUG3) {
376: options.log_level++;
377: break;
1.128 fgsch 378: } else
1.103 millert 379: fatal("Too high debugging level.");
1.66 markus 380: /* fallthrough */
1.31 markus 381: case 'V':
1.96 deraadt 382: fprintf(stderr,
383: "%s, SSH protocols %d.%d/%d.%d, OpenSSL 0x%8.8lx\n",
1.46 markus 384: SSH_VERSION,
385: PROTOCOL_MAJOR_1, PROTOCOL_MINOR_1,
1.96 deraadt 386: PROTOCOL_MAJOR_2, PROTOCOL_MINOR_2,
387: SSLeay());
1.31 markus 388: if (opt == 'V')
389: exit(0);
390: break;
391: case 'q':
392: options.log_level = SYSLOG_LEVEL_QUIET;
393: break;
394: case 'e':
395: if (optarg[0] == '^' && optarg[2] == 0 &&
1.128 fgsch 396: (u_char) optarg[1] >= 64 &&
397: (u_char) optarg[1] < 128)
1.78 markus 398: options.escape_char = (u_char) optarg[1] & 31;
1.31 markus 399: else if (strlen(optarg) == 1)
1.78 markus 400: options.escape_char = (u_char) optarg[0];
1.31 markus 401: else if (strcmp(optarg, "none") == 0)
1.119 stevesk 402: options.escape_char = SSH_ESCAPECHAR_NONE;
1.31 markus 403: else {
1.128 fgsch 404: fprintf(stderr, "Bad escape character '%s'.\n",
405: optarg);
1.31 markus 406: exit(1);
407: }
408: break;
409: case 'c':
1.49 markus 410: if (ciphers_valid(optarg)) {
411: /* SSH2 only */
412: options.ciphers = xstrdup(optarg);
1.51 markus 413: options.cipher = SSH_CIPHER_ILLEGAL;
1.49 markus 414: } else {
415: /* SSH1 only */
1.74 markus 416: options.cipher = cipher_number(optarg);
417: if (options.cipher == -1) {
1.128 fgsch 418: fprintf(stderr,
419: "Unknown cipher type '%s'\n",
420: optarg);
1.49 markus 421: exit(1);
422: }
1.128 fgsch 423: if (options.cipher == SSH_CIPHER_3DES)
1.74 markus 424: options.ciphers = "3des-cbc";
1.128 fgsch 425: else if (options.cipher == SSH_CIPHER_BLOWFISH)
1.74 markus 426: options.ciphers = "blowfish-cbc";
1.128 fgsch 427: else
1.74 markus 428: options.ciphers = (char *)-1;
1.95 markus 429: }
430: break;
431: case 'm':
432: if (mac_valid(optarg))
433: options.macs = xstrdup(optarg);
434: else {
1.128 fgsch 435: fprintf(stderr, "Unknown mac type '%s'\n",
436: optarg);
1.95 markus 437: exit(1);
1.31 markus 438: }
439: break;
440: case 'p':
1.113 stevesk 441: options.port = a2port(optarg);
442: if (options.port == 0) {
1.109 markus 443: fprintf(stderr, "Bad port '%s'\n", optarg);
444: exit(1);
445: }
1.31 markus 446: break;
447: case 'l':
448: options.user = optarg;
449: break;
450: case 'R':
1.37 markus 451: if (sscanf(optarg, "%hu/%255[^/]/%hu", &fwd_port, buf,
452: &fwd_host_port) != 3 &&
453: sscanf(optarg, "%hu:%255[^:]:%hu", &fwd_port, buf,
454: &fwd_host_port) != 3) {
1.128 fgsch 455: fprintf(stderr,
456: "Bad forwarding specification '%s'.\n",
457: optarg);
1.31 markus 458: usage();
459: /* NOTREACHED */
460: }
1.128 fgsch 461: add_remote_forward(&options, fwd_port, buf,
462: fwd_host_port);
1.31 markus 463: break;
464: case 'L':
1.37 markus 465: if (sscanf(optarg, "%hu/%255[^/]/%hu", &fwd_port, buf,
466: &fwd_host_port) != 3 &&
467: sscanf(optarg, "%hu:%255[^:]:%hu", &fwd_port, buf,
468: &fwd_host_port) != 3) {
1.128 fgsch 469: fprintf(stderr,
470: "Bad forwarding specification '%s'.\n",
471: optarg);
1.31 markus 472: usage();
473: /* NOTREACHED */
474: }
1.128 fgsch 475: add_local_forward(&options, fwd_port, buf,
476: fwd_host_port);
1.31 markus 477: break;
1.108 markus 478:
479: case 'D':
1.113 stevesk 480: fwd_port = a2port(optarg);
481: if (fwd_port == 0) {
1.128 fgsch 482: fprintf(stderr, "Bad dynamic port '%s'\n",
483: optarg);
1.109 markus 484: exit(1);
485: }
1.108 markus 486: add_local_forward(&options, fwd_port, "socks4", 0);
487: break;
488:
1.31 markus 489: case 'C':
490: options.compression = 1;
491: break;
1.45 markus 492: case 'N':
493: no_shell_flag = 1;
494: no_tty_flag = 1;
495: break;
496: case 'T':
497: no_tty_flag = 1;
498: break;
1.31 markus 499: case 'o':
500: dummy = 1;
1.128 fgsch 501: if (process_config_line(&options, host ? host : "",
502: optarg, "command-line", 0, &dummy) != 0)
1.31 markus 503: exit(1);
504: break;
1.85 djm 505: case 's':
506: subsystem_flag = 1;
1.117 markus 507: break;
508: case 'b':
509: options.bind_address = optarg;
1.85 djm 510: break;
1.31 markus 511: default:
512: usage();
1.1 deraadt 513: }
1.31 markus 514: }
515:
1.128 fgsch 516: ac -= optind;
517: av += optind;
518:
519: if (ac > 0 && !host && **av != '-') {
520: if (strchr(*av, '@')) {
521: p = xstrdup(*av);
522: cp = strchr(p, '@');
523: if (cp == NULL || cp == p)
524: usage();
525: options.user = p;
526: *cp = '\0';
527: host = ++cp;
528: } else
529: host = *av;
530: ac--, av++;
531: if (ac > 0) {
532: optind = 0;
533: optreset = 1;
534: goto again;
535: }
536: }
537:
1.31 markus 538: /* Check that we got a host name. */
539: if (!host)
540: usage();
541:
1.54 markus 542: SSLeay_add_all_algorithms();
1.72 markus 543: ERR_load_crypto_strings();
1.31 markus 544:
545: /* Initialize the command to execute on remote host. */
546: buffer_init(&command);
1.1 deraadt 547:
1.33 markus 548: /*
549: * Save the command to execute on the remote host in a buffer. There
550: * is no limit on the length of the command, except by the maximum
551: * packet size. Also sets the tty flag if there is no command.
552: */
1.128 fgsch 553: if (!ac) {
1.31 markus 554: /* No command specified - execute shell on a tty. */
555: tty_flag = 1;
1.85 djm 556: if (subsystem_flag) {
1.128 fgsch 557: fprintf(stderr,
558: "You must specify a subsystem to invoke.\n");
1.85 djm 559: usage();
560: }
1.31 markus 561: } else {
1.128 fgsch 562: /* A command has been specified. Store it into the buffer. */
563: for (i = 0; i < ac; i++) {
564: if (i)
1.31 markus 565: buffer_append(&command, " ", 1);
566: buffer_append(&command, av[i], strlen(av[i]));
567: }
568: }
569:
570: /* Cannot fork to background if no command. */
1.63 markus 571: if (fork_after_authentication_flag && buffer_len(&command) == 0 && !no_shell_flag)
1.31 markus 572: fatal("Cannot fork into background without a command to execute.");
573:
574: /* Allocate a tty by default if no command specified. */
575: if (buffer_len(&command) == 0)
576: tty_flag = 1;
577:
1.75 markus 578: /* Force no tty*/
579: if (no_tty_flag)
580: tty_flag = 0;
1.31 markus 581: /* Do not allocate a tty if stdin is not a tty. */
1.79 markus 582: if (!isatty(fileno(stdin)) && !force_tty_flag) {
1.31 markus 583: if (tty_flag)
1.103 millert 584: log("Pseudo-terminal will not be allocated because stdin is not a terminal.");
1.31 markus 585: tty_flag = 0;
586: }
1.45 markus 587:
1.101 markus 588: /*
589: * Initialize "log" output. Since we are the client all output
590: * actually goes to stderr.
591: */
1.111 markus 592: log_init(av[0], options.log_level == -1 ? SYSLOG_LEVEL_INFO : options.log_level,
593: SYSLOG_FACILITY_USER, 1);
1.31 markus 594:
595: /* Read per-user configuration file. */
1.83 markus 596: snprintf(buf, sizeof buf, "%.100s/%.100s", pw->pw_dir, _PATH_SSH_USER_CONFFILE);
1.31 markus 597: read_config_file(buf, host, &options);
598:
599: /* Read systemwide configuration file. */
1.83 markus 600: read_config_file(_PATH_HOST_CONFIG_FILE, host, &options);
1.31 markus 601:
602: /* Fill configuration defaults. */
603: fill_default_options(&options);
604:
605: /* reinit */
1.101 markus 606: log_init(av[0], options.log_level, SYSLOG_FACILITY_USER, 1);
1.31 markus 607:
608: if (options.user == NULL)
609: options.user = xstrdup(pw->pw_name);
610:
611: if (options.hostname != NULL)
612: host = options.hostname;
613:
614: /* Disable rhosts authentication if not running as root. */
615: if (original_effective_uid != 0 || !options.use_privileged_port) {
1.77 markus 616: debug("Rhosts Authentication disabled, "
1.71 markus 617: "originating port will not be trusted.");
1.31 markus 618: options.rhosts_authentication = 0;
619: }
1.33 markus 620: /*
621: * If using rsh has been selected, exec it now (without trying
622: * anything else). Note that we must release privileges first.
623: */
1.31 markus 624: if (options.use_rsh) {
1.33 markus 625: /*
626: * Restore our superuser privileges. This must be done
627: * before permanently setting the uid.
628: */
1.31 markus 629: restore_uid();
630:
631: /* Switch to the original uid permanently. */
1.107 markus 632: permanently_set_uid(pw);
1.31 markus 633:
634: /* Execute rsh. */
635: rsh_connect(host, options.user, &command);
636: fatal("rsh_connect returned");
637: }
638: /* Restore our superuser privileges. */
639: restore_uid();
640:
1.77 markus 641: /* Open a connection to the remote host. */
1.31 markus 642:
1.130 markus 643: cerr = ssh_connect(host, &hostaddr, options.port,
1.77 markus 644: options.connection_attempts,
645: original_effective_uid != 0 || !options.use_privileged_port,
1.107 markus 646: pw, options.proxy_command);
1.31 markus 647:
1.33 markus 648: /*
649: * If we successfully made the connection, load the host private key
650: * in case we will need it later for combined rsa-rhosts
651: * authentication. This must be done before releasing extra
652: * privileges, because the file is only readable by root.
653: */
1.112 markus 654: sensitive_data.nkeys = 0;
655: sensitive_data.keys = NULL;
1.130 markus 656: if (!cerr && (options.rhosts_rsa_authentication ||
1.112 markus 657: options.hostbased_authentication)) {
658: sensitive_data.nkeys = 3;
659: sensitive_data.keys = xmalloc(sensitive_data.nkeys*sizeof(Key));
660: sensitive_data.keys[0] = key_load_private_type(KEY_RSA1,
1.105 markus 661: _PATH_HOST_KEY_FILE, "", NULL);
1.112 markus 662: sensitive_data.keys[1] = key_load_private_type(KEY_DSA,
663: _PATH_HOST_DSA_KEY_FILE, "", NULL);
664: sensitive_data.keys[2] = key_load_private_type(KEY_RSA,
665: _PATH_HOST_RSA_KEY_FILE, "", NULL);
1.31 markus 666: }
1.33 markus 667: /*
668: * Get rid of any extra privileges that we may have. We will no
669: * longer need them. Also, extra privileges could make it very hard
670: * to read identity files and other non-world-readable files from the
671: * user's home directory if it happens to be on a NFS volume where
672: * root is mapped to nobody.
673: */
674:
675: /*
676: * Note that some legacy systems need to postpone the following call
677: * to permanently_set_uid() until the private hostkey is destroyed
678: * with RSA_free(). Otherwise the calling user could ptrace() the
679: * process, read the private hostkey and impersonate the host.
680: * OpenBSD does not allow ptracing of setuid processes.
681: */
1.107 markus 682: permanently_set_uid(pw);
1.31 markus 683:
1.33 markus 684: /*
685: * Now that we are back to our own permissions, create ~/.ssh
686: * directory if it doesn\'t already exist.
687: */
1.83 markus 688: snprintf(buf, sizeof buf, "%.100s/%.100s", pw->pw_dir, _PATH_SSH_USER_DIR);
1.31 markus 689: if (stat(buf, &st) < 0)
1.57 djm 690: if (mkdir(buf, 0700) < 0)
1.31 markus 691: error("Could not create directory '%.200s'.", buf);
692:
693: /* Check if the connection failed, and try "rsh" if appropriate. */
1.130 markus 694: if (cerr) {
695: if (!options.fallback_to_rsh)
696: exit(1);
1.31 markus 697: if (options.port != 0)
1.130 markus 698: log("Secure connection to %.100s on port %hu refused; "
699: "reverting to insecure method",
700: host, options.port);
1.31 markus 701: else
1.130 markus 702: log("Secure connection to %.100s refused; "
703: "reverting to insecure method.", host);
1.31 markus 704:
1.130 markus 705: rsh_connect(host, options.user, &command);
706: fatal("rsh_connect returned");
1.31 markus 707: }
1.104 markus 708: /* load options.identity_files */
709: load_public_identity_files();
710:
711: /* Expand ~ in known host file names. */
712: /* XXX mem-leaks: */
1.72 markus 713: options.system_hostfile =
714: tilde_expand_filename(options.system_hostfile, original_real_uid);
715: options.user_hostfile =
716: tilde_expand_filename(options.user_hostfile, original_real_uid);
717: options.system_hostfile2 =
718: tilde_expand_filename(options.system_hostfile2, original_real_uid);
719: options.user_hostfile2 =
720: tilde_expand_filename(options.user_hostfile2, original_real_uid);
1.31 markus 721:
722: /* Log into the remote system. This never returns if the login fails. */
1.112 markus 723: ssh_login(sensitive_data.keys, sensitive_data.nkeys,
724: host, (struct sockaddr *)&hostaddr, pw);
1.31 markus 725:
1.112 markus 726: /* We no longer need the private host keys. Clear them now. */
727: if (sensitive_data.nkeys != 0) {
728: for (i = 0; i < sensitive_data.nkeys; i++) {
729: if (sensitive_data.keys[i] != NULL) {
730: /* Destroys contents safely */
731: debug3("clear hostkey %d", i);
732: key_free(sensitive_data.keys[i]);
733: sensitive_data.keys[i] = NULL;
734: }
735: }
736: xfree(sensitive_data.keys);
1.134 markus 737: }
738: for (i = 0; i < options.num_identity_files; i++) {
739: if (options.identity_files[i]) {
740: xfree(options.identity_files[i]);
741: options.identity_files[i] = NULL;
742: }
743: if (options.identity_keys[i]) {
744: key_free(options.identity_keys[i]);
745: options.identity_keys[i] = NULL;
746: }
1.112 markus 747: }
1.31 markus 748:
1.45 markus 749: exit_status = compat20 ? ssh_session2() : ssh_session();
750: packet_close();
751: return exit_status;
752: }
753:
1.126 itojun 754: static void
1.50 markus 755: x11_get_proto(char *proto, int proto_len, char *data, int data_len)
756: {
757: char line[512];
758: FILE *f;
759: int got_data = 0, i;
760:
1.55 markus 761: if (options.xauth_location) {
762: /* Try to get Xauthority information for the display. */
1.93 itojun 763: snprintf(line, sizeof line, "%.100s list %.200s 2>" _PATH_DEVNULL,
1.55 markus 764: options.xauth_location, getenv("DISPLAY"));
765: f = popen(line, "r");
766: if (f && fgets(line, sizeof(line), f) &&
767: sscanf(line, "%*s %s %s", proto, data) == 2)
768: got_data = 1;
769: if (f)
770: pclose(f);
771: }
1.50 markus 772: /*
773: * If we didn't get authentication data, just make up some
774: * data. The forwarding code will check the validity of the
775: * response anyway, and substitute this data. The X11
776: * server, however, will ignore this fake data and use
777: * whatever authentication mechanisms it was using otherwise
778: * for the local connection.
779: */
780: if (!got_data) {
781: u_int32_t rand = 0;
782:
783: strlcpy(proto, "MIT-MAGIC-COOKIE-1", proto_len);
784: for (i = 0; i < 16; i++) {
785: if (i % 4 == 0)
786: rand = arc4random();
787: snprintf(data + 2 * i, data_len - 2 * i, "%02x", rand & 0xff);
788: rand >>= 8;
789: }
790: }
791: }
792:
1.126 itojun 793: static void
1.70 markus 794: ssh_init_forwarding(void)
795: {
1.86 markus 796: int success = 0;
1.70 markus 797: int i;
1.86 markus 798:
1.70 markus 799: /* Initiate local TCP/IP port forwardings. */
800: for (i = 0; i < options.num_local_forwards; i++) {
801: debug("Connections to local port %d forwarded to remote address %.200s:%d",
802: options.local_forwards[i].port,
803: options.local_forwards[i].host,
804: options.local_forwards[i].host_port);
1.86 markus 805: success += channel_request_local_forwarding(
1.70 markus 806: options.local_forwards[i].port,
807: options.local_forwards[i].host,
808: options.local_forwards[i].host_port,
809: options.gateway_ports);
810: }
1.86 markus 811: if (i > 0 && success == 0)
812: error("Could not request local forwarding.");
1.70 markus 813:
814: /* Initiate remote TCP/IP port forwardings. */
815: for (i = 0; i < options.num_remote_forwards; i++) {
816: debug("Connections to remote port %d forwarded to local address %.200s:%d",
817: options.remote_forwards[i].port,
818: options.remote_forwards[i].host,
819: options.remote_forwards[i].host_port);
820: channel_request_remote_forwarding(
821: options.remote_forwards[i].port,
822: options.remote_forwards[i].host,
823: options.remote_forwards[i].host_port);
824: }
825: }
826:
1.126 itojun 827: static void
1.70 markus 828: check_agent_present(void)
829: {
830: if (options.forward_agent) {
831: /* Clear agent forwarding if we don\'t have an agent. */
832: int authfd = ssh_get_authentication_socket();
833: if (authfd < 0)
834: options.forward_agent = 0;
835: else
836: ssh_close_authentication_socket(authfd);
837: }
838: }
839:
1.126 itojun 840: static int
1.45 markus 841: ssh_session(void)
842: {
843: int type;
844: int plen;
845: int interactive = 0;
846: int have_tty = 0;
847: struct winsize ws;
848: char *cp;
849:
1.31 markus 850: /* Enable compression if requested. */
851: if (options.compression) {
852: debug("Requesting compression at level %d.", options.compression_level);
853:
854: if (options.compression_level < 1 || options.compression_level > 9)
855: fatal("Compression level must be from 1 (fast) to 9 (slow, best).");
856:
857: /* Send the request. */
858: packet_start(SSH_CMSG_REQUEST_COMPRESSION);
859: packet_put_int(options.compression_level);
860: packet_send();
861: packet_write_wait();
862: type = packet_read(&plen);
863: if (type == SSH_SMSG_SUCCESS)
864: packet_start_compression(options.compression_level);
865: else if (type == SSH_SMSG_FAILURE)
866: log("Warning: Remote host refused compression.");
867: else
868: packet_disconnect("Protocol error waiting for compression response.");
869: }
870: /* Allocate a pseudo tty if appropriate. */
871: if (tty_flag) {
872: debug("Requesting pty.");
873:
874: /* Start the packet. */
875: packet_start(SSH_CMSG_REQUEST_PTY);
876:
877: /* Store TERM in the packet. There is no limit on the
878: length of the string. */
879: cp = getenv("TERM");
880: if (!cp)
881: cp = "";
1.124 markus 882: packet_put_cstring(cp);
1.31 markus 883:
884: /* Store window size in the packet. */
885: if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) < 0)
886: memset(&ws, 0, sizeof(ws));
887: packet_put_int(ws.ws_row);
888: packet_put_int(ws.ws_col);
889: packet_put_int(ws.ws_xpixel);
890: packet_put_int(ws.ws_ypixel);
891:
892: /* Store tty modes in the packet. */
1.115 stevesk 893: tty_make_modes(fileno(stdin), NULL);
1.31 markus 894:
895: /* Send the packet, and wait for it to leave. */
896: packet_send();
897: packet_write_wait();
898:
899: /* Read response from the server. */
900: type = packet_read(&plen);
1.43 markus 901: if (type == SSH_SMSG_SUCCESS) {
1.31 markus 902: interactive = 1;
1.45 markus 903: have_tty = 1;
1.43 markus 904: } else if (type == SSH_SMSG_FAILURE)
1.31 markus 905: log("Warning: Remote host failed or refused to allocate a pseudo tty.");
906: else
907: packet_disconnect("Protocol error waiting for pty request response.");
908: }
909: /* Request X11 forwarding if enabled and DISPLAY is set. */
910: if (options.forward_x11 && getenv("DISPLAY") != NULL) {
1.50 markus 911: char proto[512], data[512];
912: /* Get reasonable local authentication information. */
913: x11_get_proto(proto, sizeof proto, data, sizeof data);
914: /* Request forwarding with authentication spoofing. */
1.31 markus 915: debug("Requesting X11 forwarding with authentication spoofing.");
1.50 markus 916: x11_request_forwarding_with_spoofing(0, proto, data);
1.31 markus 917:
918: /* Read response from the server. */
919: type = packet_read(&plen);
920: if (type == SSH_SMSG_SUCCESS) {
921: interactive = 1;
1.50 markus 922: } else if (type == SSH_SMSG_FAILURE) {
1.31 markus 923: log("Warning: Remote host denied X11 forwarding.");
1.50 markus 924: } else {
1.31 markus 925: packet_disconnect("Protocol error waiting for X11 forwarding");
1.50 markus 926: }
1.31 markus 927: }
928: /* Tell the packet module whether this is an interactive session. */
1.80 markus 929: packet_set_interactive(interactive);
1.31 markus 930:
931: /* Request authentication agent forwarding if appropriate. */
1.70 markus 932: check_agent_present();
933:
1.31 markus 934: if (options.forward_agent) {
935: debug("Requesting authentication agent forwarding.");
936: auth_request_forwarding();
937:
938: /* Read response from the server. */
939: type = packet_read(&plen);
940: packet_integrity_check(plen, 0, type);
941: if (type != SSH_SMSG_SUCCESS)
942: log("Warning: Remote host denied authentication agent forwarding.");
943: }
944:
1.70 markus 945: /* Initiate port forwardings. */
946: ssh_init_forwarding();
1.34 markus 947:
948: /* If requested, let ssh continue in the background. */
1.48 markus 949: if (fork_after_authentication_flag)
1.34 markus 950: if (daemon(1, 1) < 0)
951: fatal("daemon() failed: %.200s", strerror(errno));
1.31 markus 952:
1.33 markus 953: /*
954: * If a command was specified on the command line, execute the
955: * command now. Otherwise request the server to start a shell.
956: */
1.31 markus 957: if (buffer_len(&command) > 0) {
958: int len = buffer_len(&command);
959: if (len > 900)
960: len = 900;
961: debug("Sending command: %.*s", len, buffer_ptr(&command));
962: packet_start(SSH_CMSG_EXEC_CMD);
963: packet_put_string(buffer_ptr(&command), buffer_len(&command));
964: packet_send();
965: packet_write_wait();
966: } else {
967: debug("Requesting shell.");
968: packet_start(SSH_CMSG_EXEC_SHELL);
969: packet_send();
970: packet_write_wait();
971: }
972:
973: /* Enter the interactive session. */
1.119 stevesk 974: return client_loop(have_tty, tty_flag ?
975: options.escape_char : SSH_ESCAPECHAR_NONE, 0);
1.45 markus 976: }
977:
1.126 itojun 978: static void
1.89 markus 979: client_subsystem_reply(int type, int plen, void *ctxt)
980: {
981: int id, len;
982:
983: id = packet_get_int();
984: len = buffer_len(&command);
1.100 markus 985: if (len > 900)
986: len = 900;
1.89 markus 987: packet_done();
988: if (type == SSH2_MSG_CHANNEL_FAILURE)
989: fatal("Request for subsystem '%.*s' failed on channel %d",
990: len, buffer_ptr(&command), id);
991: }
992:
1.126 itojun 993: static void
1.70 markus 994: ssh_session2_callback(int id, void *arg)
1.45 markus 995: {
996: int len;
1.80 markus 997: int interactive = 0;
1.115 stevesk 998: struct termios tio;
1.80 markus 999:
1.87 deraadt 1000: debug("client_init id %d arg %ld", id, (long)arg);
1.31 markus 1001:
1.45 markus 1002: if (tty_flag) {
1003: struct winsize ws;
1004: char *cp;
1005: cp = getenv("TERM");
1006: if (!cp)
1007: cp = "";
1008: /* Store window size in the packet. */
1009: if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) < 0)
1010: memset(&ws, 0, sizeof(ws));
1011:
1012: channel_request_start(id, "pty-req", 0);
1013: packet_put_cstring(cp);
1014: packet_put_int(ws.ws_col);
1015: packet_put_int(ws.ws_row);
1016: packet_put_int(ws.ws_xpixel);
1017: packet_put_int(ws.ws_ypixel);
1.115 stevesk 1018: tio = get_saved_tio();
1019: tty_make_modes(/*ignored*/ 0, &tio);
1.45 markus 1020: packet_send();
1.80 markus 1021: interactive = 1;
1.45 markus 1022: /* XXX wait for reply */
1023: }
1.50 markus 1024: if (options.forward_x11 &&
1025: getenv("DISPLAY") != NULL) {
1026: char proto[512], data[512];
1027: /* Get reasonable local authentication information. */
1028: x11_get_proto(proto, sizeof proto, data, sizeof data);
1029: /* Request forwarding with authentication spoofing. */
1030: debug("Requesting X11 forwarding with authentication spoofing.");
1031: x11_request_forwarding_with_spoofing(id, proto, data);
1.80 markus 1032: interactive = 1;
1.50 markus 1033: /* XXX wait for reply */
1034: }
1035:
1.70 markus 1036: check_agent_present();
1037: if (options.forward_agent) {
1038: debug("Requesting authentication agent forwarding.");
1039: channel_request_start(id, "auth-agent-req@openssh.com", 0);
1040: packet_send();
1041: }
1042:
1.45 markus 1043: len = buffer_len(&command);
1044: if (len > 0) {
1045: if (len > 900)
1046: len = 900;
1.85 djm 1047: if (subsystem_flag) {
1048: debug("Sending subsystem: %.*s", len, buffer_ptr(&command));
1.89 markus 1049: channel_request_start(id, "subsystem", /*want reply*/ 1);
1050: /* register callback for reply */
1051: /* XXX we asume that client_loop has already been called */
1052: dispatch_set(SSH2_MSG_CHANNEL_FAILURE, &client_subsystem_reply);
1053: dispatch_set(SSH2_MSG_CHANNEL_SUCCESS, &client_subsystem_reply);
1.85 djm 1054: } else {
1055: debug("Sending command: %.*s", len, buffer_ptr(&command));
1056: channel_request_start(id, "exec", 0);
1057: }
1.100 markus 1058: packet_put_string(buffer_ptr(&command), buffer_len(&command));
1.45 markus 1059: packet_send();
1060: } else {
1061: channel_request(id, "shell", 0);
1062: }
1063: /* channel_callback(id, SSH2_MSG_OPEN_CONFIGMATION, client_init, 0); */
1.90 markus 1064:
1.45 markus 1065: /* register different callback, etc. XXX */
1.80 markus 1066: packet_set_interactive(interactive);
1.45 markus 1067: }
1068:
1.126 itojun 1069: static int
1.106 markus 1070: ssh_session2_command(void)
1.45 markus 1071: {
1.118 markus 1072: Channel *c;
1073: int window, packetmax, in, out, err;
1.60 markus 1074:
1.62 markus 1075: if (stdin_null_flag) {
1.93 itojun 1076: in = open(_PATH_DEVNULL, O_RDONLY);
1.62 markus 1077: } else {
1078: in = dup(STDIN_FILENO);
1079: }
1.60 markus 1080: out = dup(STDOUT_FILENO);
1081: err = dup(STDERR_FILENO);
1.45 markus 1082:
1083: if (in < 0 || out < 0 || err < 0)
1.62 markus 1084: fatal("dup() in/out/err failed");
1.45 markus 1085:
1.69 markus 1086: /* enable nonblocking unless tty */
1087: if (!isatty(in))
1088: set_nonblock(in);
1089: if (!isatty(out))
1090: set_nonblock(out);
1091: if (!isatty(err))
1092: set_nonblock(err);
1093:
1.65 markus 1094: window = CHAN_SES_WINDOW_DEFAULT;
1095: packetmax = CHAN_SES_PACKET_DEFAULT;
1096: if (!tty_flag) {
1.45 markus 1097: window *= 2;
1.65 markus 1098: packetmax *=2;
1.45 markus 1099: }
1.118 markus 1100: c = channel_new(
1.45 markus 1101: "session", SSH_CHANNEL_OPENING, in, out, err,
1.65 markus 1102: window, packetmax, CHAN_EXTENDED_WRITE,
1.69 markus 1103: xstrdup("client-session"), /*nonblock*/0);
1.118 markus 1104: if (c == NULL)
1105: fatal("ssh_session2_command: channel_new failed");
1.45 markus 1106:
1.118 markus 1107: debug3("ssh_session2_command: channel_new: %d", c->self);
1.106 markus 1108:
1.122 markus 1109: channel_send_open(c->self);
1.118 markus 1110: channel_register_callback(c->self, SSH2_MSG_CHANNEL_OPEN_CONFIRMATION,
1.70 markus 1111: ssh_session2_callback, (void *)0);
1.106 markus 1112:
1.118 markus 1113: return c->self;
1.106 markus 1114: }
1115:
1.126 itojun 1116: static int
1.106 markus 1117: ssh_session2(void)
1118: {
1119: int id;
1120:
1121: /* XXX should be pre-session */
1122: ssh_init_forwarding();
1123:
1124: id = no_shell_flag ? -1 : ssh_session2_command();
1125:
1126: /* If requested, let ssh continue in the background. */
1127: if (fork_after_authentication_flag)
1128: if (daemon(1, 1) < 0)
1129: fatal("daemon() failed: %.200s", strerror(errno));
1.31 markus 1130:
1.119 stevesk 1131: return client_loop(tty_flag, tty_flag ?
1132: options.escape_char : SSH_ESCAPECHAR_NONE, id);
1.72 markus 1133: }
1134:
1.126 itojun 1135: static void
1.104 markus 1136: load_public_identity_files(void)
1137: {
1138: char *filename;
1139: Key *public;
1.131 millert 1140: int i = 0;
1.104 markus 1141:
1.127 markus 1142: #ifdef SMARTCARD
1.133 markus 1143: if (options.smartcard_device != NULL &&
1.127 markus 1144: options.num_identity_files + 1 < SSH_MAX_IDENTITY_FILES &&
1.132 jakob 1145: (public = sc_get_key(options.smartcard_device)) != NULL ) {
1.127 markus 1146: Key *new;
1147:
1.131 millert 1148: if (options.num_identity_files + 2 > SSH_MAX_IDENTITY_FILES)
1149: options.num_identity_files = SSH_MAX_IDENTITY_FILES - 2;
1150: memmove(&options.identity_files[2], &options.identity_files[0],
1151: sizeof(char *) * options.num_identity_files);
1152: options.num_identity_files += 2;
1153: i = 2;
1154:
1.127 markus 1155: /* XXX ssh1 vs ssh2 */
1156: new = key_new(KEY_RSA);
1157: new->flags = KEY_FLAG_EXT;
1158: BN_copy(new->rsa->n, public->rsa->n);
1159: BN_copy(new->rsa->e, public->rsa->e);
1160: RSA_set_method(new->rsa, sc_get_engine());
1.131 millert 1161: options.identity_keys[0] = new;
1162: options.identity_files[0] = xstrdup("smartcard rsa key");;
1.127 markus 1163:
1164: new = key_new(KEY_RSA1);
1165: new->flags = KEY_FLAG_EXT;
1166: BN_copy(new->rsa->n, public->rsa->n);
1167: BN_copy(new->rsa->e, public->rsa->e);
1168: RSA_set_method(new->rsa, sc_get_engine());
1.131 millert 1169: options.identity_keys[1] = new;
1170: options.identity_files[1] = xstrdup("smartcard rsa1 key");
1.127 markus 1171:
1172: key_free(public);
1173: }
1174: #endif
1.131 millert 1175: for (; i < options.num_identity_files; i++) {
1176: filename = tilde_expand_filename(options.identity_files[i],
1177: original_real_uid);
1178: public = key_load_public(filename, NULL);
1179: debug("identity file %s type %d", filename,
1180: public ? public->type : -1);
1181: xfree(options.identity_files[i]);
1182: options.identity_files[i] = filename;
1183: options.identity_keys[i] = public;
1184: }
1.1 deraadt 1185: }
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