Annotation of src/usr.bin/ssh/ssh.c, Revision 1.139
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"
1.139 ! markus 42: RCSID("$OpenBSD: ssh.c,v 1.138 2001/08/11 22:51:27 jakob 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"
1.137 jakob 75: #endif
1.127 markus 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:
1.139 ! markus 113: /* optional user configfile */
! 114: char *config = NULL;
! 115:
1.33 markus 116: /*
117: * Name of the host we are connecting to. This is the name given on the
118: * command line, or the HostName specified for the user-supplied name in a
119: * configuration file.
120: */
1.1 deraadt 121: char *host;
122:
1.22 provos 123: /* socket address the host resolves to */
1.37 markus 124: struct sockaddr_storage hostaddr;
1.22 provos 125:
1.33 markus 126: /*
127: * Flag to indicate that we have received a window change signal which has
128: * not yet been processed. This will cause a message indicating the new
129: * window size to be sent to the server a little later. This is volatile
130: * because this is updated in a signal handler.
131: */
1.1 deraadt 132: volatile int received_window_change_signal = 0;
133:
1.112 markus 134: /* Private host keys. */
135: struct {
136: Key **keys;
137: int nkeys;
138: } sensitive_data;
1.1 deraadt 139:
1.10 dugsong 140: /* Original real UID. */
141: uid_t original_real_uid;
1.1 deraadt 142:
1.45 markus 143: /* command to be executed */
144: Buffer command;
145:
1.85 djm 146: /* Should we execute a command or invoke a subsystem? */
147: int subsystem_flag = 0;
148:
1.1 deraadt 149: /* Prints a help message to the user. This function never returns. */
150:
1.126 itojun 151: static void
1.93 itojun 152: usage(void)
1.1 deraadt 153: {
1.76 markus 154: fprintf(stderr, "Usage: %s [options] host [command]\n", __progname);
1.31 markus 155: fprintf(stderr, "Options:\n");
156: fprintf(stderr, " -l user Log in using this user name.\n");
1.93 itojun 157: fprintf(stderr, " -n Redirect input from " _PATH_DEVNULL ".\n");
1.139 ! markus 158: fprintf(stderr, " -F config Config file (default: ~/%s).\n",
! 159: _PATH_SSH_USER_CONFFILE);
1.53 markus 160: fprintf(stderr, " -A Enable authentication agent forwarding.\n");
1.120 markus 161: fprintf(stderr, " -a Disable authentication agent forwarding (default).\n");
1.9 dugsong 162: #ifdef AFS
1.31 markus 163: fprintf(stderr, " -k Disable Kerberos ticket and AFS token forwarding.\n");
164: #endif /* AFS */
1.88 stevesk 165: fprintf(stderr, " -X Enable X11 connection forwarding.\n");
1.120 markus 166: fprintf(stderr, " -x Disable X11 connection forwarding (default).\n");
1.99 deraadt 167: fprintf(stderr, " -i file Identity for public key authentication "
168: "(default: ~/.ssh/identity)\n");
1.135 jakob 169: #ifdef SMARTCARD
170: fprintf(stderr, " -I reader Set smartcard reader.\n");
1.137 jakob 171: #endif
1.31 markus 172: fprintf(stderr, " -t Tty; allocate a tty even if command is given.\n");
1.45 markus 173: fprintf(stderr, " -T Do not allocate a tty.\n");
1.31 markus 174: fprintf(stderr, " -v Verbose; display verbose debugging messages.\n");
1.66 markus 175: fprintf(stderr, " Multiple -v increases verbosity.\n");
1.31 markus 176: fprintf(stderr, " -V Display version number only.\n");
177: fprintf(stderr, " -P Don't allocate a privileged port.\n");
178: fprintf(stderr, " -q Quiet; don't display any warning messages.\n");
179: fprintf(stderr, " -f Fork into background after authentication.\n");
180: fprintf(stderr, " -e char Set escape character; ``none'' = disable (default: ~).\n");
181:
1.120 markus 182: fprintf(stderr, " -c cipher Select encryption algorithm\n");
1.102 stevesk 183: fprintf(stderr, " -m macs Specify MAC algorithms for protocol version 2.\n");
1.31 markus 184: fprintf(stderr, " -p port Connect to this port. Server must be on the same port.\n");
185: fprintf(stderr, " -L listen-port:host:port Forward local port to remote address\n");
186: fprintf(stderr, " -R listen-port:host:port Forward remote port to local address\n");
1.76 markus 187: fprintf(stderr, " These cause %s to listen for connections on a port, and\n", __progname);
1.31 markus 188: fprintf(stderr, " forward them to the other side by connecting to host:port.\n");
189: fprintf(stderr, " -C Enable compression.\n");
1.45 markus 190: fprintf(stderr, " -N Do not execute a shell or command.\n");
1.31 markus 191: fprintf(stderr, " -g Allow remote hosts to connect to forwarded ports.\n");
1.92 jakob 192: fprintf(stderr, " -1 Force protocol version 1.\n");
193: fprintf(stderr, " -2 Force protocol version 2.\n");
1.37 markus 194: fprintf(stderr, " -4 Use IPv4 only.\n");
195: fprintf(stderr, " -6 Use IPv6 only.\n");
1.31 markus 196: fprintf(stderr, " -o 'option' Process the option as if it was read from a configuration file.\n");
1.85 djm 197: fprintf(stderr, " -s Invoke command (mandatory) as SSH2 subsystem.\n");
1.120 markus 198: fprintf(stderr, " -b addr Local IP address.\n");
1.31 markus 199: exit(1);
1.1 deraadt 200: }
201:
1.32 deraadt 202: /*
203: * Connects to the given host using rsh (or prints an error message and exits
204: * if rsh is not available). This function never returns.
205: */
1.126 itojun 206: static void
1.31 markus 207: rsh_connect(char *host, char *user, Buffer * command)
1.1 deraadt 208: {
1.31 markus 209: char *args[10];
210: int i;
211:
212: log("Using rsh. WARNING: Connection will not be encrypted.");
213: /* Build argument list for rsh. */
214: i = 0;
215: args[i++] = _PATH_RSH;
216: /* host may have to come after user on some systems */
217: args[i++] = host;
218: if (user) {
219: args[i++] = "-l";
220: args[i++] = user;
221: }
222: if (buffer_len(command) > 0) {
223: buffer_append(command, "\0", 1);
224: args[i++] = buffer_ptr(command);
225: }
226: args[i++] = NULL;
227: if (debug_flag) {
228: for (i = 0; args[i]; i++) {
229: if (i != 0)
230: fprintf(stderr, " ");
231: fprintf(stderr, "%s", args[i]);
232: }
233: fprintf(stderr, "\n");
234: }
235: execv(_PATH_RSH, args);
236: perror(_PATH_RSH);
237: exit(1);
1.1 deraadt 238: }
239:
1.126 itojun 240: static int ssh_session(void);
241: static int ssh_session2(void);
242: static void load_public_identity_files(void);
1.45 markus 243:
1.32 deraadt 244: /*
245: * Main program for the ssh client.
246: */
1.2 provos 247: int
248: main(int ac, char **av)
1.1 deraadt 249: {
1.130 markus 250: int i, opt, exit_status, cerr;
1.35 markus 251: u_short fwd_port, fwd_host_port;
1.128 fgsch 252: char *p, *cp, buf[256];
1.31 markus 253: struct stat st;
1.98 markus 254: struct passwd *pw;
1.45 markus 255: int dummy;
1.31 markus 256: uid_t original_effective_uid;
257:
1.33 markus 258: /*
259: * Save the original real uid. It will be needed later (uid-swapping
260: * may clobber the real uid).
261: */
1.31 markus 262: original_real_uid = getuid();
263: original_effective_uid = geteuid();
264:
265: /* If we are installed setuid root be careful to not drop core. */
266: if (original_real_uid != original_effective_uid) {
267: struct rlimit rlim;
268: rlim.rlim_cur = rlim.rlim_max = 0;
269: if (setrlimit(RLIMIT_CORE, &rlim) < 0)
270: fatal("setrlimit failed: %.100s", strerror(errno));
1.1 deraadt 271: }
1.107 markus 272: /* Get user data. */
273: pw = getpwuid(original_real_uid);
274: if (!pw) {
275: log("You don't exist, go away!");
276: exit(1);
277: }
278: /* Take a copy of the returned structure. */
279: pw = pwcopy(pw);
280:
1.33 markus 281: /*
282: * Use uid-swapping to give up root privileges for the duration of
283: * option processing. We will re-instantiate the rights when we are
284: * ready to create the privileged port, and will permanently drop
285: * them when the port has been created (actually, when the connection
286: * has been made, as we may need to create the port several times).
287: */
1.107 markus 288: temporarily_use_uid(pw);
1.31 markus 289:
1.33 markus 290: /*
291: * Set our umask to something reasonable, as some files are created
292: * with the default umask. This will make them world-readable but
293: * writable only by the owner, which is ok for all files for which we
294: * don't set the modes explicitly.
295: */
1.31 markus 296: umask(022);
297:
298: /* Initialize option structure to indicate that no values have been set. */
299: initialize_options(&options);
300:
301: /* Parse command-line arguments. */
302: host = NULL;
303:
1.128 fgsch 304: again:
305: while ((opt = getopt(ac, av,
1.139 ! markus 306: "1246ab:c:e:fgi:kl:m:no:p:qstvxACD:F:I:L:NPR:TVX")) != -1) {
1.31 markus 307: switch (opt) {
1.91 jakob 308: case '1':
309: options.protocol = SSH_PROTO_1;
310: break;
1.47 markus 311: case '2':
312: options.protocol = SSH_PROTO_2;
313: break;
1.37 markus 314: case '4':
315: IPv4or6 = AF_INET;
316: break;
317: case '6':
318: IPv4or6 = AF_INET6;
319: break;
1.31 markus 320: case 'n':
321: stdin_null_flag = 1;
322: break;
323: case 'f':
324: fork_after_authentication_flag = 1;
325: stdin_null_flag = 1;
326: break;
327: case 'x':
328: options.forward_x11 = 0;
329: break;
330: case 'X':
331: options.forward_x11 = 1;
332: break;
333: case 'g':
334: options.gateway_ports = 1;
335: break;
336: case 'P':
337: options.use_privileged_port = 0;
338: break;
339: case 'a':
340: options.forward_agent = 0;
1.53 markus 341: break;
342: case 'A':
343: options.forward_agent = 1;
1.31 markus 344: break;
1.9 dugsong 345: #ifdef AFS
1.31 markus 346: case 'k':
347: options.kerberos_tgt_passing = 0;
348: options.afs_token_passing = 0;
349: break;
1.1 deraadt 350: #endif
1.31 markus 351: case 'i':
352: if (stat(optarg, &st) < 0) {
1.128 fgsch 353: fprintf(stderr, "Warning: Identity file %s "
354: "does not exist.\n", optarg);
1.31 markus 355: break;
356: }
1.128 fgsch 357: if (options.num_identity_files >=
358: SSH_MAX_IDENTITY_FILES)
359: fatal("Too many identity files specified "
360: "(max %d)", SSH_MAX_IDENTITY_FILES);
361: options.identity_files[options.num_identity_files++] =
362: xstrdup(optarg);
1.31 markus 363: break;
1.127 markus 364: case 'I':
365: #ifdef SMARTCARD
1.133 markus 366: options.smartcard_device = xstrdup(optarg);
1.137 jakob 367: #else
1.127 markus 368: fprintf(stderr, "no support for smartcards.\n");
1.137 jakob 369: #endif
1.127 markus 370: break;
1.31 markus 371: case 't':
1.79 markus 372: if (tty_flag)
373: force_tty_flag = 1;
1.31 markus 374: tty_flag = 1;
375: break;
376: case 'v':
1.66 markus 377: if (0 == debug_flag) {
378: debug_flag = 1;
379: options.log_level = SYSLOG_LEVEL_DEBUG1;
380: } else if (options.log_level < SYSLOG_LEVEL_DEBUG3) {
381: options.log_level++;
382: break;
1.128 fgsch 383: } else
1.103 millert 384: fatal("Too high debugging level.");
1.66 markus 385: /* fallthrough */
1.31 markus 386: case 'V':
1.96 deraadt 387: fprintf(stderr,
388: "%s, SSH protocols %d.%d/%d.%d, OpenSSL 0x%8.8lx\n",
1.46 markus 389: SSH_VERSION,
390: PROTOCOL_MAJOR_1, PROTOCOL_MINOR_1,
1.96 deraadt 391: PROTOCOL_MAJOR_2, PROTOCOL_MINOR_2,
392: SSLeay());
1.31 markus 393: if (opt == 'V')
394: exit(0);
395: break;
396: case 'q':
397: options.log_level = SYSLOG_LEVEL_QUIET;
398: break;
399: case 'e':
400: if (optarg[0] == '^' && optarg[2] == 0 &&
1.128 fgsch 401: (u_char) optarg[1] >= 64 &&
402: (u_char) optarg[1] < 128)
1.78 markus 403: options.escape_char = (u_char) optarg[1] & 31;
1.31 markus 404: else if (strlen(optarg) == 1)
1.78 markus 405: options.escape_char = (u_char) optarg[0];
1.31 markus 406: else if (strcmp(optarg, "none") == 0)
1.119 stevesk 407: options.escape_char = SSH_ESCAPECHAR_NONE;
1.31 markus 408: else {
1.128 fgsch 409: fprintf(stderr, "Bad escape character '%s'.\n",
410: optarg);
1.31 markus 411: exit(1);
412: }
413: break;
414: case 'c':
1.49 markus 415: if (ciphers_valid(optarg)) {
416: /* SSH2 only */
417: options.ciphers = xstrdup(optarg);
1.51 markus 418: options.cipher = SSH_CIPHER_ILLEGAL;
1.49 markus 419: } else {
420: /* SSH1 only */
1.74 markus 421: options.cipher = cipher_number(optarg);
422: if (options.cipher == -1) {
1.128 fgsch 423: fprintf(stderr,
424: "Unknown cipher type '%s'\n",
425: optarg);
1.49 markus 426: exit(1);
427: }
1.128 fgsch 428: if (options.cipher == SSH_CIPHER_3DES)
1.74 markus 429: options.ciphers = "3des-cbc";
1.128 fgsch 430: else if (options.cipher == SSH_CIPHER_BLOWFISH)
1.74 markus 431: options.ciphers = "blowfish-cbc";
1.128 fgsch 432: else
1.74 markus 433: options.ciphers = (char *)-1;
1.95 markus 434: }
435: break;
436: case 'm':
437: if (mac_valid(optarg))
438: options.macs = xstrdup(optarg);
439: else {
1.128 fgsch 440: fprintf(stderr, "Unknown mac type '%s'\n",
441: optarg);
1.95 markus 442: exit(1);
1.31 markus 443: }
444: break;
445: case 'p':
1.113 stevesk 446: options.port = a2port(optarg);
447: if (options.port == 0) {
1.109 markus 448: fprintf(stderr, "Bad port '%s'\n", optarg);
449: exit(1);
450: }
1.31 markus 451: break;
452: case 'l':
453: options.user = optarg;
454: break;
455: case 'R':
1.37 markus 456: if (sscanf(optarg, "%hu/%255[^/]/%hu", &fwd_port, buf,
457: &fwd_host_port) != 3 &&
458: sscanf(optarg, "%hu:%255[^:]:%hu", &fwd_port, buf,
459: &fwd_host_port) != 3) {
1.128 fgsch 460: fprintf(stderr,
461: "Bad forwarding specification '%s'.\n",
462: optarg);
1.31 markus 463: usage();
464: /* NOTREACHED */
465: }
1.128 fgsch 466: add_remote_forward(&options, fwd_port, buf,
467: fwd_host_port);
1.31 markus 468: break;
469: case 'L':
1.37 markus 470: if (sscanf(optarg, "%hu/%255[^/]/%hu", &fwd_port, buf,
471: &fwd_host_port) != 3 &&
472: sscanf(optarg, "%hu:%255[^:]:%hu", &fwd_port, buf,
473: &fwd_host_port) != 3) {
1.128 fgsch 474: fprintf(stderr,
475: "Bad forwarding specification '%s'.\n",
476: optarg);
1.31 markus 477: usage();
478: /* NOTREACHED */
479: }
1.128 fgsch 480: add_local_forward(&options, fwd_port, buf,
481: fwd_host_port);
1.31 markus 482: break;
1.108 markus 483:
484: case 'D':
1.113 stevesk 485: fwd_port = a2port(optarg);
486: if (fwd_port == 0) {
1.128 fgsch 487: fprintf(stderr, "Bad dynamic port '%s'\n",
488: optarg);
1.109 markus 489: exit(1);
490: }
1.108 markus 491: add_local_forward(&options, fwd_port, "socks4", 0);
492: break;
493:
1.31 markus 494: case 'C':
495: options.compression = 1;
496: break;
1.45 markus 497: case 'N':
498: no_shell_flag = 1;
499: no_tty_flag = 1;
500: break;
501: case 'T':
502: no_tty_flag = 1;
503: break;
1.31 markus 504: case 'o':
505: dummy = 1;
1.128 fgsch 506: if (process_config_line(&options, host ? host : "",
507: optarg, "command-line", 0, &dummy) != 0)
1.31 markus 508: exit(1);
509: break;
1.85 djm 510: case 's':
511: subsystem_flag = 1;
1.117 markus 512: break;
513: case 'b':
514: options.bind_address = optarg;
1.85 djm 515: break;
1.139 ! markus 516: case 'F':
! 517: config = optarg;
! 518: break;
1.31 markus 519: default:
520: usage();
1.1 deraadt 521: }
1.31 markus 522: }
523:
1.128 fgsch 524: ac -= optind;
525: av += optind;
526:
527: if (ac > 0 && !host && **av != '-') {
528: if (strchr(*av, '@')) {
529: p = xstrdup(*av);
530: cp = strchr(p, '@');
531: if (cp == NULL || cp == p)
532: usage();
533: options.user = p;
534: *cp = '\0';
535: host = ++cp;
536: } else
537: host = *av;
538: ac--, av++;
539: if (ac > 0) {
540: optind = 0;
541: optreset = 1;
542: goto again;
543: }
544: }
545:
1.31 markus 546: /* Check that we got a host name. */
547: if (!host)
548: usage();
549:
1.54 markus 550: SSLeay_add_all_algorithms();
1.72 markus 551: ERR_load_crypto_strings();
1.31 markus 552:
553: /* Initialize the command to execute on remote host. */
554: buffer_init(&command);
1.1 deraadt 555:
1.33 markus 556: /*
557: * Save the command to execute on the remote host in a buffer. There
558: * is no limit on the length of the command, except by the maximum
559: * packet size. Also sets the tty flag if there is no command.
560: */
1.128 fgsch 561: if (!ac) {
1.31 markus 562: /* No command specified - execute shell on a tty. */
563: tty_flag = 1;
1.85 djm 564: if (subsystem_flag) {
1.128 fgsch 565: fprintf(stderr,
566: "You must specify a subsystem to invoke.\n");
1.85 djm 567: usage();
568: }
1.31 markus 569: } else {
1.128 fgsch 570: /* A command has been specified. Store it into the buffer. */
571: for (i = 0; i < ac; i++) {
572: if (i)
1.31 markus 573: buffer_append(&command, " ", 1);
574: buffer_append(&command, av[i], strlen(av[i]));
575: }
576: }
577:
578: /* Cannot fork to background if no command. */
1.63 markus 579: if (fork_after_authentication_flag && buffer_len(&command) == 0 && !no_shell_flag)
1.31 markus 580: fatal("Cannot fork into background without a command to execute.");
581:
582: /* Allocate a tty by default if no command specified. */
583: if (buffer_len(&command) == 0)
584: tty_flag = 1;
585:
1.75 markus 586: /* Force no tty*/
587: if (no_tty_flag)
588: tty_flag = 0;
1.31 markus 589: /* Do not allocate a tty if stdin is not a tty. */
1.79 markus 590: if (!isatty(fileno(stdin)) && !force_tty_flag) {
1.31 markus 591: if (tty_flag)
1.103 millert 592: log("Pseudo-terminal will not be allocated because stdin is not a terminal.");
1.31 markus 593: tty_flag = 0;
594: }
1.45 markus 595:
1.101 markus 596: /*
597: * Initialize "log" output. Since we are the client all output
598: * actually goes to stderr.
599: */
1.111 markus 600: log_init(av[0], options.log_level == -1 ? SYSLOG_LEVEL_INFO : options.log_level,
601: SYSLOG_FACILITY_USER, 1);
1.31 markus 602:
1.139 ! markus 603: /*
! 604: * Read per-user configuration file. Ignore the system wide config
! 605: * file if the user specifies a config file on the command line.
! 606: */
! 607: if (config != NULL) {
! 608: read_config_file(config, host, &options);
! 609: } else {
! 610: snprintf(buf, sizeof buf, "%.100s/%.100s", pw->pw_dir,
! 611: _PATH_SSH_USER_CONFFILE);
! 612:
! 613: /* Read systemwide configuration file. */
! 614: read_config_file(_PATH_HOST_CONFIG_FILE, host, &options);
! 615: read_config_file(buf, host, &options);
! 616: }
1.31 markus 617:
618: /* Fill configuration defaults. */
619: fill_default_options(&options);
620:
621: /* reinit */
1.101 markus 622: log_init(av[0], options.log_level, SYSLOG_FACILITY_USER, 1);
1.31 markus 623:
624: if (options.user == NULL)
625: options.user = xstrdup(pw->pw_name);
626:
627: if (options.hostname != NULL)
628: host = options.hostname;
629:
630: /* Disable rhosts authentication if not running as root. */
631: if (original_effective_uid != 0 || !options.use_privileged_port) {
1.77 markus 632: debug("Rhosts Authentication disabled, "
1.71 markus 633: "originating port will not be trusted.");
1.31 markus 634: options.rhosts_authentication = 0;
635: }
1.33 markus 636: /*
637: * If using rsh has been selected, exec it now (without trying
638: * anything else). Note that we must release privileges first.
639: */
1.31 markus 640: if (options.use_rsh) {
1.33 markus 641: /*
642: * Restore our superuser privileges. This must be done
643: * before permanently setting the uid.
644: */
1.31 markus 645: restore_uid();
646:
647: /* Switch to the original uid permanently. */
1.107 markus 648: permanently_set_uid(pw);
1.31 markus 649:
650: /* Execute rsh. */
651: rsh_connect(host, options.user, &command);
652: fatal("rsh_connect returned");
653: }
654: /* Restore our superuser privileges. */
655: restore_uid();
656:
1.77 markus 657: /* Open a connection to the remote host. */
1.31 markus 658:
1.130 markus 659: cerr = ssh_connect(host, &hostaddr, options.port,
1.77 markus 660: options.connection_attempts,
661: original_effective_uid != 0 || !options.use_privileged_port,
1.107 markus 662: pw, options.proxy_command);
1.31 markus 663:
1.33 markus 664: /*
665: * If we successfully made the connection, load the host private key
666: * in case we will need it later for combined rsa-rhosts
667: * authentication. This must be done before releasing extra
668: * privileges, because the file is only readable by root.
669: */
1.112 markus 670: sensitive_data.nkeys = 0;
671: sensitive_data.keys = NULL;
1.130 markus 672: if (!cerr && (options.rhosts_rsa_authentication ||
1.112 markus 673: options.hostbased_authentication)) {
674: sensitive_data.nkeys = 3;
675: sensitive_data.keys = xmalloc(sensitive_data.nkeys*sizeof(Key));
676: sensitive_data.keys[0] = key_load_private_type(KEY_RSA1,
1.105 markus 677: _PATH_HOST_KEY_FILE, "", NULL);
1.112 markus 678: sensitive_data.keys[1] = key_load_private_type(KEY_DSA,
679: _PATH_HOST_DSA_KEY_FILE, "", NULL);
680: sensitive_data.keys[2] = key_load_private_type(KEY_RSA,
681: _PATH_HOST_RSA_KEY_FILE, "", NULL);
1.31 markus 682: }
1.33 markus 683: /*
684: * Get rid of any extra privileges that we may have. We will no
685: * longer need them. Also, extra privileges could make it very hard
686: * to read identity files and other non-world-readable files from the
687: * user's home directory if it happens to be on a NFS volume where
688: * root is mapped to nobody.
689: */
690:
691: /*
692: * Note that some legacy systems need to postpone the following call
693: * to permanently_set_uid() until the private hostkey is destroyed
694: * with RSA_free(). Otherwise the calling user could ptrace() the
695: * process, read the private hostkey and impersonate the host.
696: * OpenBSD does not allow ptracing of setuid processes.
697: */
1.107 markus 698: permanently_set_uid(pw);
1.31 markus 699:
1.33 markus 700: /*
701: * Now that we are back to our own permissions, create ~/.ssh
702: * directory if it doesn\'t already exist.
703: */
1.138 jakob 704: snprintf(buf, sizeof buf, "%.100s%s%.100s", pw->pw_dir, strcmp(pw->pw_dir, "/") ? "/" : "", _PATH_SSH_USER_DIR);
1.31 markus 705: if (stat(buf, &st) < 0)
1.57 djm 706: if (mkdir(buf, 0700) < 0)
1.31 markus 707: error("Could not create directory '%.200s'.", buf);
708:
709: /* Check if the connection failed, and try "rsh" if appropriate. */
1.130 markus 710: if (cerr) {
711: if (!options.fallback_to_rsh)
712: exit(1);
1.31 markus 713: if (options.port != 0)
1.130 markus 714: log("Secure connection to %.100s on port %hu refused; "
715: "reverting to insecure method",
716: host, options.port);
1.31 markus 717: else
1.130 markus 718: log("Secure connection to %.100s refused; "
719: "reverting to insecure method.", host);
1.31 markus 720:
1.130 markus 721: rsh_connect(host, options.user, &command);
722: fatal("rsh_connect returned");
1.31 markus 723: }
1.104 markus 724: /* load options.identity_files */
725: load_public_identity_files();
726:
727: /* Expand ~ in known host file names. */
728: /* XXX mem-leaks: */
1.72 markus 729: options.system_hostfile =
730: tilde_expand_filename(options.system_hostfile, original_real_uid);
731: options.user_hostfile =
732: tilde_expand_filename(options.user_hostfile, original_real_uid);
733: options.system_hostfile2 =
734: tilde_expand_filename(options.system_hostfile2, original_real_uid);
735: options.user_hostfile2 =
736: tilde_expand_filename(options.user_hostfile2, original_real_uid);
1.31 markus 737:
738: /* Log into the remote system. This never returns if the login fails. */
1.112 markus 739: ssh_login(sensitive_data.keys, sensitive_data.nkeys,
740: host, (struct sockaddr *)&hostaddr, pw);
1.31 markus 741:
1.112 markus 742: /* We no longer need the private host keys. Clear them now. */
743: if (sensitive_data.nkeys != 0) {
744: for (i = 0; i < sensitive_data.nkeys; i++) {
745: if (sensitive_data.keys[i] != NULL) {
746: /* Destroys contents safely */
747: debug3("clear hostkey %d", i);
748: key_free(sensitive_data.keys[i]);
749: sensitive_data.keys[i] = NULL;
750: }
751: }
752: xfree(sensitive_data.keys);
1.134 markus 753: }
754: for (i = 0; i < options.num_identity_files; i++) {
755: if (options.identity_files[i]) {
756: xfree(options.identity_files[i]);
757: options.identity_files[i] = NULL;
758: }
759: if (options.identity_keys[i]) {
760: key_free(options.identity_keys[i]);
761: options.identity_keys[i] = NULL;
762: }
1.112 markus 763: }
1.31 markus 764:
1.45 markus 765: exit_status = compat20 ? ssh_session2() : ssh_session();
766: packet_close();
767: return exit_status;
768: }
769:
1.126 itojun 770: static void
1.50 markus 771: x11_get_proto(char *proto, int proto_len, char *data, int data_len)
772: {
773: char line[512];
774: FILE *f;
775: int got_data = 0, i;
776:
1.55 markus 777: if (options.xauth_location) {
778: /* Try to get Xauthority information for the display. */
1.93 itojun 779: snprintf(line, sizeof line, "%.100s list %.200s 2>" _PATH_DEVNULL,
1.55 markus 780: options.xauth_location, getenv("DISPLAY"));
781: f = popen(line, "r");
782: if (f && fgets(line, sizeof(line), f) &&
783: sscanf(line, "%*s %s %s", proto, data) == 2)
784: got_data = 1;
785: if (f)
786: pclose(f);
787: }
1.50 markus 788: /*
789: * If we didn't get authentication data, just make up some
790: * data. The forwarding code will check the validity of the
791: * response anyway, and substitute this data. The X11
792: * server, however, will ignore this fake data and use
793: * whatever authentication mechanisms it was using otherwise
794: * for the local connection.
795: */
796: if (!got_data) {
797: u_int32_t rand = 0;
798:
799: strlcpy(proto, "MIT-MAGIC-COOKIE-1", proto_len);
800: for (i = 0; i < 16; i++) {
801: if (i % 4 == 0)
802: rand = arc4random();
803: snprintf(data + 2 * i, data_len - 2 * i, "%02x", rand & 0xff);
804: rand >>= 8;
805: }
806: }
807: }
808:
1.126 itojun 809: static void
1.70 markus 810: ssh_init_forwarding(void)
811: {
1.86 markus 812: int success = 0;
1.70 markus 813: int i;
1.86 markus 814:
1.70 markus 815: /* Initiate local TCP/IP port forwardings. */
816: for (i = 0; i < options.num_local_forwards; i++) {
817: debug("Connections to local port %d forwarded to remote address %.200s:%d",
818: options.local_forwards[i].port,
819: options.local_forwards[i].host,
820: options.local_forwards[i].host_port);
1.86 markus 821: success += channel_request_local_forwarding(
1.70 markus 822: options.local_forwards[i].port,
823: options.local_forwards[i].host,
824: options.local_forwards[i].host_port,
825: options.gateway_ports);
826: }
1.86 markus 827: if (i > 0 && success == 0)
828: error("Could not request local forwarding.");
1.70 markus 829:
830: /* Initiate remote TCP/IP port forwardings. */
831: for (i = 0; i < options.num_remote_forwards; i++) {
832: debug("Connections to remote port %d forwarded to local address %.200s:%d",
833: options.remote_forwards[i].port,
834: options.remote_forwards[i].host,
835: options.remote_forwards[i].host_port);
836: channel_request_remote_forwarding(
837: options.remote_forwards[i].port,
838: options.remote_forwards[i].host,
839: options.remote_forwards[i].host_port);
840: }
841: }
842:
1.126 itojun 843: static void
1.70 markus 844: check_agent_present(void)
845: {
846: if (options.forward_agent) {
847: /* Clear agent forwarding if we don\'t have an agent. */
848: int authfd = ssh_get_authentication_socket();
849: if (authfd < 0)
850: options.forward_agent = 0;
851: else
852: ssh_close_authentication_socket(authfd);
853: }
854: }
855:
1.126 itojun 856: static int
1.45 markus 857: ssh_session(void)
858: {
859: int type;
860: int plen;
861: int interactive = 0;
862: int have_tty = 0;
863: struct winsize ws;
864: char *cp;
865:
1.31 markus 866: /* Enable compression if requested. */
867: if (options.compression) {
868: debug("Requesting compression at level %d.", options.compression_level);
869:
870: if (options.compression_level < 1 || options.compression_level > 9)
871: fatal("Compression level must be from 1 (fast) to 9 (slow, best).");
872:
873: /* Send the request. */
874: packet_start(SSH_CMSG_REQUEST_COMPRESSION);
875: packet_put_int(options.compression_level);
876: packet_send();
877: packet_write_wait();
878: type = packet_read(&plen);
879: if (type == SSH_SMSG_SUCCESS)
880: packet_start_compression(options.compression_level);
881: else if (type == SSH_SMSG_FAILURE)
882: log("Warning: Remote host refused compression.");
883: else
884: packet_disconnect("Protocol error waiting for compression response.");
885: }
886: /* Allocate a pseudo tty if appropriate. */
887: if (tty_flag) {
888: debug("Requesting pty.");
889:
890: /* Start the packet. */
891: packet_start(SSH_CMSG_REQUEST_PTY);
892:
893: /* Store TERM in the packet. There is no limit on the
894: length of the string. */
895: cp = getenv("TERM");
896: if (!cp)
897: cp = "";
1.124 markus 898: packet_put_cstring(cp);
1.31 markus 899:
900: /* Store window size in the packet. */
901: if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) < 0)
902: memset(&ws, 0, sizeof(ws));
903: packet_put_int(ws.ws_row);
904: packet_put_int(ws.ws_col);
905: packet_put_int(ws.ws_xpixel);
906: packet_put_int(ws.ws_ypixel);
907:
908: /* Store tty modes in the packet. */
1.115 stevesk 909: tty_make_modes(fileno(stdin), NULL);
1.31 markus 910:
911: /* Send the packet, and wait for it to leave. */
912: packet_send();
913: packet_write_wait();
914:
915: /* Read response from the server. */
916: type = packet_read(&plen);
1.43 markus 917: if (type == SSH_SMSG_SUCCESS) {
1.31 markus 918: interactive = 1;
1.45 markus 919: have_tty = 1;
1.43 markus 920: } else if (type == SSH_SMSG_FAILURE)
1.31 markus 921: log("Warning: Remote host failed or refused to allocate a pseudo tty.");
922: else
923: packet_disconnect("Protocol error waiting for pty request response.");
924: }
925: /* Request X11 forwarding if enabled and DISPLAY is set. */
926: if (options.forward_x11 && getenv("DISPLAY") != NULL) {
1.50 markus 927: char proto[512], data[512];
928: /* Get reasonable local authentication information. */
929: x11_get_proto(proto, sizeof proto, data, sizeof data);
930: /* Request forwarding with authentication spoofing. */
1.31 markus 931: debug("Requesting X11 forwarding with authentication spoofing.");
1.50 markus 932: x11_request_forwarding_with_spoofing(0, proto, data);
1.31 markus 933:
934: /* Read response from the server. */
935: type = packet_read(&plen);
936: if (type == SSH_SMSG_SUCCESS) {
937: interactive = 1;
1.50 markus 938: } else if (type == SSH_SMSG_FAILURE) {
1.31 markus 939: log("Warning: Remote host denied X11 forwarding.");
1.50 markus 940: } else {
1.31 markus 941: packet_disconnect("Protocol error waiting for X11 forwarding");
1.50 markus 942: }
1.31 markus 943: }
944: /* Tell the packet module whether this is an interactive session. */
1.80 markus 945: packet_set_interactive(interactive);
1.31 markus 946:
947: /* Request authentication agent forwarding if appropriate. */
1.70 markus 948: check_agent_present();
949:
1.31 markus 950: if (options.forward_agent) {
951: debug("Requesting authentication agent forwarding.");
952: auth_request_forwarding();
953:
954: /* Read response from the server. */
955: type = packet_read(&plen);
956: packet_integrity_check(plen, 0, type);
957: if (type != SSH_SMSG_SUCCESS)
958: log("Warning: Remote host denied authentication agent forwarding.");
959: }
960:
1.70 markus 961: /* Initiate port forwardings. */
962: ssh_init_forwarding();
1.34 markus 963:
964: /* If requested, let ssh continue in the background. */
1.48 markus 965: if (fork_after_authentication_flag)
1.34 markus 966: if (daemon(1, 1) < 0)
967: fatal("daemon() failed: %.200s", strerror(errno));
1.31 markus 968:
1.33 markus 969: /*
970: * If a command was specified on the command line, execute the
971: * command now. Otherwise request the server to start a shell.
972: */
1.31 markus 973: if (buffer_len(&command) > 0) {
974: int len = buffer_len(&command);
975: if (len > 900)
976: len = 900;
977: debug("Sending command: %.*s", len, buffer_ptr(&command));
978: packet_start(SSH_CMSG_EXEC_CMD);
979: packet_put_string(buffer_ptr(&command), buffer_len(&command));
980: packet_send();
981: packet_write_wait();
982: } else {
983: debug("Requesting shell.");
984: packet_start(SSH_CMSG_EXEC_SHELL);
985: packet_send();
986: packet_write_wait();
987: }
988:
989: /* Enter the interactive session. */
1.119 stevesk 990: return client_loop(have_tty, tty_flag ?
991: options.escape_char : SSH_ESCAPECHAR_NONE, 0);
1.45 markus 992: }
993:
1.126 itojun 994: static void
1.89 markus 995: client_subsystem_reply(int type, int plen, void *ctxt)
996: {
997: int id, len;
998:
999: id = packet_get_int();
1000: len = buffer_len(&command);
1.100 markus 1001: if (len > 900)
1002: len = 900;
1.89 markus 1003: packet_done();
1004: if (type == SSH2_MSG_CHANNEL_FAILURE)
1005: fatal("Request for subsystem '%.*s' failed on channel %d",
1006: len, buffer_ptr(&command), id);
1007: }
1008:
1.126 itojun 1009: static void
1.70 markus 1010: ssh_session2_callback(int id, void *arg)
1.45 markus 1011: {
1012: int len;
1.80 markus 1013: int interactive = 0;
1.115 stevesk 1014: struct termios tio;
1.80 markus 1015:
1.87 deraadt 1016: debug("client_init id %d arg %ld", id, (long)arg);
1.31 markus 1017:
1.45 markus 1018: if (tty_flag) {
1019: struct winsize ws;
1020: char *cp;
1021: cp = getenv("TERM");
1022: if (!cp)
1023: cp = "";
1024: /* Store window size in the packet. */
1025: if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) < 0)
1026: memset(&ws, 0, sizeof(ws));
1027:
1028: channel_request_start(id, "pty-req", 0);
1029: packet_put_cstring(cp);
1030: packet_put_int(ws.ws_col);
1031: packet_put_int(ws.ws_row);
1032: packet_put_int(ws.ws_xpixel);
1033: packet_put_int(ws.ws_ypixel);
1.115 stevesk 1034: tio = get_saved_tio();
1035: tty_make_modes(/*ignored*/ 0, &tio);
1.45 markus 1036: packet_send();
1.80 markus 1037: interactive = 1;
1.45 markus 1038: /* XXX wait for reply */
1039: }
1.50 markus 1040: if (options.forward_x11 &&
1041: getenv("DISPLAY") != NULL) {
1042: char proto[512], data[512];
1043: /* Get reasonable local authentication information. */
1044: x11_get_proto(proto, sizeof proto, data, sizeof data);
1045: /* Request forwarding with authentication spoofing. */
1046: debug("Requesting X11 forwarding with authentication spoofing.");
1047: x11_request_forwarding_with_spoofing(id, proto, data);
1.80 markus 1048: interactive = 1;
1.50 markus 1049: /* XXX wait for reply */
1050: }
1051:
1.70 markus 1052: check_agent_present();
1053: if (options.forward_agent) {
1054: debug("Requesting authentication agent forwarding.");
1055: channel_request_start(id, "auth-agent-req@openssh.com", 0);
1056: packet_send();
1057: }
1058:
1.45 markus 1059: len = buffer_len(&command);
1060: if (len > 0) {
1061: if (len > 900)
1062: len = 900;
1.85 djm 1063: if (subsystem_flag) {
1064: debug("Sending subsystem: %.*s", len, buffer_ptr(&command));
1.89 markus 1065: channel_request_start(id, "subsystem", /*want reply*/ 1);
1066: /* register callback for reply */
1067: /* XXX we asume that client_loop has already been called */
1068: dispatch_set(SSH2_MSG_CHANNEL_FAILURE, &client_subsystem_reply);
1069: dispatch_set(SSH2_MSG_CHANNEL_SUCCESS, &client_subsystem_reply);
1.85 djm 1070: } else {
1071: debug("Sending command: %.*s", len, buffer_ptr(&command));
1072: channel_request_start(id, "exec", 0);
1073: }
1.100 markus 1074: packet_put_string(buffer_ptr(&command), buffer_len(&command));
1.45 markus 1075: packet_send();
1076: } else {
1077: channel_request(id, "shell", 0);
1078: }
1079: /* channel_callback(id, SSH2_MSG_OPEN_CONFIGMATION, client_init, 0); */
1.90 markus 1080:
1.45 markus 1081: /* register different callback, etc. XXX */
1.80 markus 1082: packet_set_interactive(interactive);
1.45 markus 1083: }
1084:
1.126 itojun 1085: static int
1.106 markus 1086: ssh_session2_command(void)
1.45 markus 1087: {
1.118 markus 1088: Channel *c;
1089: int window, packetmax, in, out, err;
1.60 markus 1090:
1.62 markus 1091: if (stdin_null_flag) {
1.93 itojun 1092: in = open(_PATH_DEVNULL, O_RDONLY);
1.62 markus 1093: } else {
1094: in = dup(STDIN_FILENO);
1095: }
1.60 markus 1096: out = dup(STDOUT_FILENO);
1097: err = dup(STDERR_FILENO);
1.45 markus 1098:
1099: if (in < 0 || out < 0 || err < 0)
1.62 markus 1100: fatal("dup() in/out/err failed");
1.45 markus 1101:
1.69 markus 1102: /* enable nonblocking unless tty */
1103: if (!isatty(in))
1104: set_nonblock(in);
1105: if (!isatty(out))
1106: set_nonblock(out);
1107: if (!isatty(err))
1108: set_nonblock(err);
1109:
1.65 markus 1110: window = CHAN_SES_WINDOW_DEFAULT;
1111: packetmax = CHAN_SES_PACKET_DEFAULT;
1112: if (!tty_flag) {
1.45 markus 1113: window *= 2;
1.65 markus 1114: packetmax *=2;
1.45 markus 1115: }
1.118 markus 1116: c = channel_new(
1.45 markus 1117: "session", SSH_CHANNEL_OPENING, in, out, err,
1.65 markus 1118: window, packetmax, CHAN_EXTENDED_WRITE,
1.69 markus 1119: xstrdup("client-session"), /*nonblock*/0);
1.118 markus 1120: if (c == NULL)
1121: fatal("ssh_session2_command: channel_new failed");
1.45 markus 1122:
1.118 markus 1123: debug3("ssh_session2_command: channel_new: %d", c->self);
1.106 markus 1124:
1.122 markus 1125: channel_send_open(c->self);
1.118 markus 1126: channel_register_callback(c->self, SSH2_MSG_CHANNEL_OPEN_CONFIRMATION,
1.70 markus 1127: ssh_session2_callback, (void *)0);
1.106 markus 1128:
1.118 markus 1129: return c->self;
1.106 markus 1130: }
1131:
1.126 itojun 1132: static int
1.106 markus 1133: ssh_session2(void)
1134: {
1135: int id;
1136:
1137: /* XXX should be pre-session */
1138: ssh_init_forwarding();
1139:
1140: id = no_shell_flag ? -1 : ssh_session2_command();
1141:
1142: /* If requested, let ssh continue in the background. */
1143: if (fork_after_authentication_flag)
1144: if (daemon(1, 1) < 0)
1145: fatal("daemon() failed: %.200s", strerror(errno));
1.31 markus 1146:
1.119 stevesk 1147: return client_loop(tty_flag, tty_flag ?
1148: options.escape_char : SSH_ESCAPECHAR_NONE, id);
1.72 markus 1149: }
1150:
1.126 itojun 1151: static void
1.104 markus 1152: load_public_identity_files(void)
1153: {
1154: char *filename;
1155: Key *public;
1.131 millert 1156: int i = 0;
1.104 markus 1157:
1.127 markus 1158: #ifdef SMARTCARD
1.133 markus 1159: if (options.smartcard_device != NULL &&
1.127 markus 1160: options.num_identity_files + 1 < SSH_MAX_IDENTITY_FILES &&
1.132 jakob 1161: (public = sc_get_key(options.smartcard_device)) != NULL ) {
1.127 markus 1162: Key *new;
1163:
1.131 millert 1164: if (options.num_identity_files + 2 > SSH_MAX_IDENTITY_FILES)
1165: options.num_identity_files = SSH_MAX_IDENTITY_FILES - 2;
1166: memmove(&options.identity_files[2], &options.identity_files[0],
1167: sizeof(char *) * options.num_identity_files);
1168: options.num_identity_files += 2;
1169: i = 2;
1170:
1.127 markus 1171: /* XXX ssh1 vs ssh2 */
1172: new = key_new(KEY_RSA);
1173: new->flags = KEY_FLAG_EXT;
1174: BN_copy(new->rsa->n, public->rsa->n);
1175: BN_copy(new->rsa->e, public->rsa->e);
1176: RSA_set_method(new->rsa, sc_get_engine());
1.131 millert 1177: options.identity_keys[0] = new;
1178: options.identity_files[0] = xstrdup("smartcard rsa key");;
1.127 markus 1179:
1180: new = key_new(KEY_RSA1);
1181: new->flags = KEY_FLAG_EXT;
1182: BN_copy(new->rsa->n, public->rsa->n);
1183: BN_copy(new->rsa->e, public->rsa->e);
1184: RSA_set_method(new->rsa, sc_get_engine());
1.131 millert 1185: options.identity_keys[1] = new;
1186: options.identity_files[1] = xstrdup("smartcard rsa1 key");
1.127 markus 1187:
1188: key_free(public);
1189: }
1.136 jakob 1190: #endif /* SMARTCARD */
1.131 millert 1191: for (; i < options.num_identity_files; i++) {
1192: filename = tilde_expand_filename(options.identity_files[i],
1193: original_real_uid);
1194: public = key_load_public(filename, NULL);
1195: debug("identity file %s type %d", filename,
1196: public ? public->type : -1);
1197: xfree(options.identity_files[i]);
1198: options.identity_files[i] = filename;
1199: options.identity_keys[i] = public;
1200: }
1.1 deraadt 1201: }
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