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1853d1ef | 1 | /* |
2 | * Copyright 2002 Niels Provos <provos@citi.umich.edu> | |
3 | * Copyright 2002 Markus Friedl <markus@openbsd.org> | |
4 | * All rights reserved. | |
5 | * | |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions | |
8 | * are met: | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * 2. Redistributions in binary form must reproduce the above copyright | |
12 | * notice, this list of conditions and the following disclaimer in the | |
13 | * documentation and/or other materials provided with the distribution. | |
14 | * | |
15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
16 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
17 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
18 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
20 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
21 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
22 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
24 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
25 | */ | |
26 | ||
27 | #include "includes.h" | |
1c590258 | 28 | RCSID("$OpenBSD: monitor_wrap.c,v 1.28 2003/07/22 13:35:22 markus Exp $"); |
1853d1ef | 29 | |
30 | #include <openssl/bn.h> | |
31 | #include <openssl/dh.h> | |
32 | ||
33 | #include "ssh.h" | |
34 | #include "dh.h" | |
35 | #include "kex.h" | |
36 | #include "auth.h" | |
92e15201 | 37 | #include "auth-options.h" |
1853d1ef | 38 | #include "buffer.h" |
39 | #include "bufaux.h" | |
40 | #include "packet.h" | |
41 | #include "mac.h" | |
42 | #include "log.h" | |
43 | #include "zlib.h" | |
44 | #include "monitor.h" | |
45 | #include "monitor_wrap.h" | |
46 | #include "xmalloc.h" | |
47 | #include "atomicio.h" | |
48 | #include "monitor_fdpass.h" | |
49 | #include "getput.h" | |
7fceb20d | 50 | #include "servconf.h" |
1853d1ef | 51 | |
52 | #include "auth.h" | |
53 | #include "channels.h" | |
54 | #include "session.h" | |
55 | ||
56 | /* Imports */ | |
57 | extern int compat20; | |
58 | extern Newkeys *newkeys[]; | |
59 | extern z_stream incoming_stream; | |
60 | extern z_stream outgoing_stream; | |
b5a28cbc | 61 | extern struct monitor *pmonitor; |
1853d1ef | 62 | extern Buffer input, output; |
7fceb20d | 63 | extern ServerOptions options; |
1853d1ef | 64 | |
65 | void | |
66 | mm_request_send(int socket, enum monitor_reqtype type, Buffer *m) | |
67 | { | |
1853d1ef | 68 | u_int mlen = buffer_len(m); |
405a0d43 | 69 | u_char buf[5]; |
1853d1ef | 70 | |
1588c277 | 71 | debug3("%s entering: type %d", __func__, type); |
1853d1ef | 72 | |
73 | PUT_32BIT(buf, mlen + 1); | |
7203d6bb | 74 | buf[4] = (u_char) type; /* 1st byte of payload is mesg-type */ |
dc54438a | 75 | if (atomicio(vwrite, socket, buf, sizeof(buf)) != sizeof(buf)) |
1588c277 | 76 | fatal("%s: write", __func__); |
dc54438a | 77 | if (atomicio(vwrite, socket, buffer_ptr(m), mlen) != mlen) |
1588c277 | 78 | fatal("%s: write", __func__); |
1853d1ef | 79 | } |
80 | ||
81 | void | |
82 | mm_request_receive(int socket, Buffer *m) | |
83 | { | |
84 | u_char buf[4]; | |
1853d1ef | 85 | u_int msg_len; |
405a0d43 | 86 | ssize_t res; |
1853d1ef | 87 | |
1588c277 | 88 | debug3("%s entering", __func__); |
1853d1ef | 89 | |
90 | res = atomicio(read, socket, buf, sizeof(buf)); | |
91 | if (res != sizeof(buf)) { | |
92 | if (res == 0) | |
93 | fatal_cleanup(); | |
1588c277 | 94 | fatal("%s: read: %ld", __func__, (long)res); |
1853d1ef | 95 | } |
96 | msg_len = GET_32BIT(buf); | |
97 | if (msg_len > 256 * 1024) | |
1588c277 | 98 | fatal("%s: read: bad msg_len %d", __func__, msg_len); |
1853d1ef | 99 | buffer_clear(m); |
100 | buffer_append_space(m, msg_len); | |
101 | res = atomicio(read, socket, buffer_ptr(m), msg_len); | |
102 | if (res != msg_len) | |
1588c277 | 103 | fatal("%s: read: %ld != msg_len", __func__, (long)res); |
1853d1ef | 104 | } |
105 | ||
106 | void | |
107 | mm_request_receive_expect(int socket, enum monitor_reqtype type, Buffer *m) | |
108 | { | |
109 | u_char rtype; | |
110 | ||
1588c277 | 111 | debug3("%s entering: type %d", __func__, type); |
1853d1ef | 112 | |
113 | mm_request_receive(socket, m); | |
114 | rtype = buffer_get_char(m); | |
115 | if (rtype != type) | |
1588c277 | 116 | fatal("%s: read: rtype %d != type %d", __func__, |
1853d1ef | 117 | rtype, type); |
118 | } | |
119 | ||
120 | DH * | |
121 | mm_choose_dh(int min, int nbits, int max) | |
122 | { | |
123 | BIGNUM *p, *g; | |
124 | int success = 0; | |
125 | Buffer m; | |
126 | ||
127 | buffer_init(&m); | |
128 | buffer_put_int(&m, min); | |
129 | buffer_put_int(&m, nbits); | |
130 | buffer_put_int(&m, max); | |
131 | ||
b5a28cbc | 132 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_MODULI, &m); |
1853d1ef | 133 | |
1588c277 | 134 | debug3("%s: waiting for MONITOR_ANS_MODULI", __func__); |
b5a28cbc | 135 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_MODULI, &m); |
1853d1ef | 136 | |
137 | success = buffer_get_char(&m); | |
138 | if (success == 0) | |
1588c277 | 139 | fatal("%s: MONITOR_ANS_MODULI failed", __func__); |
1853d1ef | 140 | |
141 | if ((p = BN_new()) == NULL) | |
1588c277 | 142 | fatal("%s: BN_new failed", __func__); |
1853d1ef | 143 | if ((g = BN_new()) == NULL) |
1588c277 | 144 | fatal("%s: BN_new failed", __func__); |
1853d1ef | 145 | buffer_get_bignum2(&m, p); |
146 | buffer_get_bignum2(&m, g); | |
147 | ||
1588c277 | 148 | debug3("%s: remaining %d", __func__, buffer_len(&m)); |
1853d1ef | 149 | buffer_free(&m); |
150 | ||
151 | return (dh_new_group(g, p)); | |
152 | } | |
153 | ||
154 | int | |
155 | mm_key_sign(Key *key, u_char **sigp, u_int *lenp, u_char *data, u_int datalen) | |
156 | { | |
b5a28cbc | 157 | Kex *kex = *pmonitor->m_pkex; |
1853d1ef | 158 | Buffer m; |
159 | ||
1588c277 | 160 | debug3("%s entering", __func__); |
1853d1ef | 161 | |
162 | buffer_init(&m); | |
163 | buffer_put_int(&m, kex->host_key_index(key)); | |
164 | buffer_put_string(&m, data, datalen); | |
165 | ||
b5a28cbc | 166 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SIGN, &m); |
1853d1ef | 167 | |
1588c277 | 168 | debug3("%s: waiting for MONITOR_ANS_SIGN", __func__); |
b5a28cbc | 169 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SIGN, &m); |
1853d1ef | 170 | *sigp = buffer_get_string(&m, lenp); |
171 | buffer_free(&m); | |
172 | ||
173 | return (0); | |
174 | } | |
175 | ||
176 | struct passwd * | |
177 | mm_getpwnamallow(const char *login) | |
178 | { | |
179 | Buffer m; | |
180 | struct passwd *pw; | |
181 | u_int pwlen; | |
182 | ||
1588c277 | 183 | debug3("%s entering", __func__); |
1853d1ef | 184 | |
185 | buffer_init(&m); | |
186 | buffer_put_cstring(&m, login); | |
187 | ||
b5a28cbc | 188 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PWNAM, &m); |
1853d1ef | 189 | |
1588c277 | 190 | debug3("%s: waiting for MONITOR_ANS_PWNAM", __func__); |
b5a28cbc | 191 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PWNAM, &m); |
1853d1ef | 192 | |
193 | if (buffer_get_char(&m) == 0) { | |
194 | buffer_free(&m); | |
195 | return (NULL); | |
196 | } | |
197 | pw = buffer_get_string(&m, &pwlen); | |
198 | if (pwlen != sizeof(struct passwd)) | |
1588c277 | 199 | fatal("%s: struct passwd size mismatch", __func__); |
1853d1ef | 200 | pw->pw_name = buffer_get_string(&m, NULL); |
201 | pw->pw_passwd = buffer_get_string(&m, NULL); | |
202 | pw->pw_gecos = buffer_get_string(&m, NULL); | |
7b18c353 | 203 | #ifdef HAVE_PW_CLASS_IN_PASSWD |
1853d1ef | 204 | pw->pw_class = buffer_get_string(&m, NULL); |
7b18c353 | 205 | #endif |
1853d1ef | 206 | pw->pw_dir = buffer_get_string(&m, NULL); |
207 | pw->pw_shell = buffer_get_string(&m, NULL); | |
208 | buffer_free(&m); | |
209 | ||
210 | return (pw); | |
211 | } | |
212 | ||
343288b8 | 213 | char *mm_auth2_read_banner(void) |
94a73cdc | 214 | { |
215 | Buffer m; | |
216 | char *banner; | |
217 | ||
1588c277 | 218 | debug3("%s entering", __func__); |
94a73cdc | 219 | |
220 | buffer_init(&m); | |
b5a28cbc | 221 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTH2_READ_BANNER, &m); |
94a73cdc | 222 | buffer_clear(&m); |
223 | ||
b5a28cbc | 224 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUTH2_READ_BANNER, &m); |
94a73cdc | 225 | banner = buffer_get_string(&m, NULL); |
226 | buffer_free(&m); | |
7203d6bb | 227 | |
94a73cdc | 228 | return (banner); |
229 | } | |
230 | ||
1853d1ef | 231 | /* Inform the privileged process about service and style */ |
232 | ||
233 | void | |
234 | mm_inform_authserv(char *service, char *style) | |
235 | { | |
236 | Buffer m; | |
237 | ||
1588c277 | 238 | debug3("%s entering", __func__); |
1853d1ef | 239 | |
240 | buffer_init(&m); | |
241 | buffer_put_cstring(&m, service); | |
242 | buffer_put_cstring(&m, style ? style : ""); | |
243 | ||
b5a28cbc | 244 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHSERV, &m); |
1853d1ef | 245 | |
246 | buffer_free(&m); | |
247 | } | |
248 | ||
249 | /* Do the password authentication */ | |
250 | int | |
251 | mm_auth_password(Authctxt *authctxt, char *password) | |
252 | { | |
253 | Buffer m; | |
254 | int authenticated = 0; | |
255 | ||
1588c277 | 256 | debug3("%s entering", __func__); |
1853d1ef | 257 | |
258 | buffer_init(&m); | |
259 | buffer_put_cstring(&m, password); | |
b5a28cbc | 260 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHPASSWORD, &m); |
1853d1ef | 261 | |
1588c277 | 262 | debug3("%s: waiting for MONITOR_ANS_AUTHPASSWORD", __func__); |
b5a28cbc | 263 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUTHPASSWORD, &m); |
1853d1ef | 264 | |
265 | authenticated = buffer_get_int(&m); | |
266 | ||
267 | buffer_free(&m); | |
268 | ||
269 | debug3("%s: user %sauthenticated", | |
1588c277 | 270 | __func__, authenticated ? "" : "not "); |
1853d1ef | 271 | return (authenticated); |
272 | } | |
273 | ||
274 | int | |
275 | mm_user_key_allowed(struct passwd *pw, Key *key) | |
276 | { | |
277 | return (mm_key_allowed(MM_USERKEY, NULL, NULL, key)); | |
278 | } | |
279 | ||
280 | int | |
281 | mm_hostbased_key_allowed(struct passwd *pw, char *user, char *host, | |
282 | Key *key) | |
283 | { | |
284 | return (mm_key_allowed(MM_HOSTKEY, user, host, key)); | |
285 | } | |
286 | ||
287 | int | |
288 | mm_auth_rhosts_rsa_key_allowed(struct passwd *pw, char *user, | |
289 | char *host, Key *key) | |
290 | { | |
291 | int ret; | |
292 | ||
293 | key->type = KEY_RSA; /* XXX hack for key_to_blob */ | |
294 | ret = mm_key_allowed(MM_RSAHOSTKEY, user, host, key); | |
295 | key->type = KEY_RSA1; | |
296 | return (ret); | |
297 | } | |
298 | ||
299 | static void | |
300 | mm_send_debug(Buffer *m) | |
301 | { | |
302 | char *msg; | |
303 | ||
304 | while (buffer_len(m)) { | |
305 | msg = buffer_get_string(m, NULL); | |
1588c277 | 306 | debug3("%s: Sending debug: %s", __func__, msg); |
1853d1ef | 307 | packet_send_debug("%s", msg); |
308 | xfree(msg); | |
309 | } | |
310 | } | |
311 | ||
312 | int | |
313 | mm_key_allowed(enum mm_keytype type, char *user, char *host, Key *key) | |
314 | { | |
315 | Buffer m; | |
316 | u_char *blob; | |
317 | u_int len; | |
92e15201 | 318 | int allowed = 0, have_forced = 0; |
1853d1ef | 319 | |
1588c277 | 320 | debug3("%s entering", __func__); |
1853d1ef | 321 | |
322 | /* Convert the key to a blob and the pass it over */ | |
323 | if (!key_to_blob(key, &blob, &len)) | |
324 | return (0); | |
325 | ||
326 | buffer_init(&m); | |
327 | buffer_put_int(&m, type); | |
328 | buffer_put_cstring(&m, user ? user : ""); | |
329 | buffer_put_cstring(&m, host ? host : ""); | |
330 | buffer_put_string(&m, blob, len); | |
331 | xfree(blob); | |
332 | ||
b5a28cbc | 333 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYALLOWED, &m); |
1853d1ef | 334 | |
1588c277 | 335 | debug3("%s: waiting for MONITOR_ANS_KEYALLOWED", __func__); |
b5a28cbc | 336 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYALLOWED, &m); |
1853d1ef | 337 | |
338 | allowed = buffer_get_int(&m); | |
339 | ||
92e15201 | 340 | /* fake forced command */ |
341 | auth_clear_options(); | |
342 | have_forced = buffer_get_int(&m); | |
343 | forced_command = have_forced ? xstrdup("true") : NULL; | |
344 | ||
1853d1ef | 345 | /* Send potential debug messages */ |
346 | mm_send_debug(&m); | |
347 | ||
348 | buffer_free(&m); | |
349 | ||
350 | return (allowed); | |
351 | } | |
352 | ||
353 | /* | |
354 | * This key verify needs to send the key type along, because the | |
355 | * privileged parent makes the decision if the key is allowed | |
356 | * for authentication. | |
357 | */ | |
358 | ||
359 | int | |
360 | mm_key_verify(Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen) | |
361 | { | |
362 | Buffer m; | |
363 | u_char *blob; | |
364 | u_int len; | |
365 | int verified = 0; | |
366 | ||
1588c277 | 367 | debug3("%s entering", __func__); |
1853d1ef | 368 | |
369 | /* Convert the key to a blob and the pass it over */ | |
370 | if (!key_to_blob(key, &blob, &len)) | |
371 | return (0); | |
372 | ||
373 | buffer_init(&m); | |
374 | buffer_put_string(&m, blob, len); | |
375 | buffer_put_string(&m, sig, siglen); | |
376 | buffer_put_string(&m, data, datalen); | |
377 | xfree(blob); | |
378 | ||
b5a28cbc | 379 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYVERIFY, &m); |
1853d1ef | 380 | |
1588c277 | 381 | debug3("%s: waiting for MONITOR_ANS_KEYVERIFY", __func__); |
b5a28cbc | 382 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYVERIFY, &m); |
1853d1ef | 383 | |
384 | verified = buffer_get_int(&m); | |
385 | ||
386 | buffer_free(&m); | |
387 | ||
388 | return (verified); | |
389 | } | |
390 | ||
391 | /* Export key state after authentication */ | |
392 | Newkeys * | |
393 | mm_newkeys_from_blob(u_char *blob, int blen) | |
394 | { | |
395 | Buffer b; | |
396 | u_int len; | |
397 | Newkeys *newkey = NULL; | |
398 | Enc *enc; | |
399 | Mac *mac; | |
400 | Comp *comp; | |
401 | ||
1588c277 | 402 | debug3("%s: %p(%d)", __func__, blob, blen); |
1853d1ef | 403 | #ifdef DEBUG_PK |
404 | dump_base64(stderr, blob, blen); | |
405 | #endif | |
406 | buffer_init(&b); | |
407 | buffer_append(&b, blob, blen); | |
408 | ||
409 | newkey = xmalloc(sizeof(*newkey)); | |
410 | enc = &newkey->enc; | |
411 | mac = &newkey->mac; | |
412 | comp = &newkey->comp; | |
413 | ||
414 | /* Enc structure */ | |
415 | enc->name = buffer_get_string(&b, NULL); | |
416 | buffer_get(&b, &enc->cipher, sizeof(enc->cipher)); | |
417 | enc->enabled = buffer_get_int(&b); | |
418 | enc->block_size = buffer_get_int(&b); | |
419 | enc->key = buffer_get_string(&b, &enc->key_len); | |
420 | enc->iv = buffer_get_string(&b, &len); | |
421 | if (len != enc->block_size) | |
bb0640b2 | 422 | fatal("%s: bad ivlen: expected %u != %u", __func__, |
1853d1ef | 423 | enc->block_size, len); |
424 | ||
425 | if (enc->name == NULL || cipher_by_name(enc->name) != enc->cipher) | |
1588c277 | 426 | fatal("%s: bad cipher name %s or pointer %p", __func__, |
1853d1ef | 427 | enc->name, enc->cipher); |
428 | ||
429 | /* Mac structure */ | |
430 | mac->name = buffer_get_string(&b, NULL); | |
431 | if (mac->name == NULL || mac_init(mac, mac->name) == -1) | |
1588c277 | 432 | fatal("%s: can not init mac %s", __func__, mac->name); |
1853d1ef | 433 | mac->enabled = buffer_get_int(&b); |
434 | mac->key = buffer_get_string(&b, &len); | |
435 | if (len > mac->key_len) | |
bb0640b2 | 436 | fatal("%s: bad mac key length: %u > %d", __func__, len, |
1853d1ef | 437 | mac->key_len); |
438 | mac->key_len = len; | |
439 | ||
440 | /* Comp structure */ | |
441 | comp->type = buffer_get_int(&b); | |
442 | comp->enabled = buffer_get_int(&b); | |
443 | comp->name = buffer_get_string(&b, NULL); | |
444 | ||
445 | len = buffer_len(&b); | |
446 | if (len != 0) | |
bb0640b2 | 447 | error("newkeys_from_blob: remaining bytes in blob %u", len); |
1853d1ef | 448 | buffer_free(&b); |
449 | return (newkey); | |
450 | } | |
451 | ||
452 | int | |
453 | mm_newkeys_to_blob(int mode, u_char **blobp, u_int *lenp) | |
454 | { | |
455 | Buffer b; | |
456 | int len; | |
1853d1ef | 457 | Enc *enc; |
458 | Mac *mac; | |
459 | Comp *comp; | |
460 | Newkeys *newkey = newkeys[mode]; | |
461 | ||
1588c277 | 462 | debug3("%s: converting %p", __func__, newkey); |
1853d1ef | 463 | |
464 | if (newkey == NULL) { | |
1588c277 | 465 | error("%s: newkey == NULL", __func__); |
1853d1ef | 466 | return 0; |
467 | } | |
468 | enc = &newkey->enc; | |
469 | mac = &newkey->mac; | |
470 | comp = &newkey->comp; | |
471 | ||
472 | buffer_init(&b); | |
473 | /* Enc structure */ | |
474 | buffer_put_cstring(&b, enc->name); | |
475 | /* The cipher struct is constant and shared, you export pointer */ | |
476 | buffer_append(&b, &enc->cipher, sizeof(enc->cipher)); | |
477 | buffer_put_int(&b, enc->enabled); | |
478 | buffer_put_int(&b, enc->block_size); | |
479 | buffer_put_string(&b, enc->key, enc->key_len); | |
480 | packet_get_keyiv(mode, enc->iv, enc->block_size); | |
481 | buffer_put_string(&b, enc->iv, enc->block_size); | |
482 | ||
483 | /* Mac structure */ | |
484 | buffer_put_cstring(&b, mac->name); | |
485 | buffer_put_int(&b, mac->enabled); | |
486 | buffer_put_string(&b, mac->key, mac->key_len); | |
487 | ||
488 | /* Comp structure */ | |
489 | buffer_put_int(&b, comp->type); | |
490 | buffer_put_int(&b, comp->enabled); | |
491 | buffer_put_cstring(&b, comp->name); | |
492 | ||
493 | len = buffer_len(&b); | |
1853d1ef | 494 | if (lenp != NULL) |
495 | *lenp = len; | |
eb9f2fab | 496 | if (blobp != NULL) { |
497 | *blobp = xmalloc(len); | |
498 | memcpy(*blobp, buffer_ptr(&b), len); | |
499 | } | |
500 | memset(buffer_ptr(&b), 0, len); | |
501 | buffer_free(&b); | |
1853d1ef | 502 | return len; |
503 | } | |
504 | ||
505 | static void | |
506 | mm_send_kex(Buffer *m, Kex *kex) | |
507 | { | |
508 | buffer_put_string(m, kex->session_id, kex->session_id_len); | |
509 | buffer_put_int(m, kex->we_need); | |
510 | buffer_put_int(m, kex->hostkey_type); | |
511 | buffer_put_int(m, kex->kex_type); | |
512 | buffer_put_string(m, buffer_ptr(&kex->my), buffer_len(&kex->my)); | |
513 | buffer_put_string(m, buffer_ptr(&kex->peer), buffer_len(&kex->peer)); | |
514 | buffer_put_int(m, kex->flags); | |
515 | buffer_put_cstring(m, kex->client_version_string); | |
516 | buffer_put_cstring(m, kex->server_version_string); | |
517 | } | |
518 | ||
519 | void | |
b5a28cbc | 520 | mm_send_keystate(struct monitor *pmonitor) |
1853d1ef | 521 | { |
522 | Buffer m; | |
523 | u_char *blob, *p; | |
524 | u_int bloblen, plen; | |
ffd7b36b | 525 | u_int32_t seqnr, packets; |
526 | u_int64_t blocks; | |
1853d1ef | 527 | |
528 | buffer_init(&m); | |
529 | ||
530 | if (!compat20) { | |
531 | u_char iv[24]; | |
9459414c | 532 | u_char *key; |
533 | u_int ivlen, keylen; | |
1853d1ef | 534 | |
535 | buffer_put_int(&m, packet_get_protocol_flags()); | |
536 | ||
537 | buffer_put_int(&m, packet_get_ssh1_cipher()); | |
538 | ||
9459414c | 539 | debug3("%s: Sending ssh1 KEY+IV", __func__); |
540 | keylen = packet_get_encryption_key(NULL); | |
541 | key = xmalloc(keylen+1); /* add 1 if keylen == 0 */ | |
542 | keylen = packet_get_encryption_key(key); | |
543 | buffer_put_string(&m, key, keylen); | |
544 | memset(key, 0, keylen); | |
545 | xfree(key); | |
546 | ||
1853d1ef | 547 | ivlen = packet_get_keyiv_len(MODE_OUT); |
548 | packet_get_keyiv(MODE_OUT, iv, ivlen); | |
549 | buffer_put_string(&m, iv, ivlen); | |
550 | ivlen = packet_get_keyiv_len(MODE_OUT); | |
551 | packet_get_keyiv(MODE_IN, iv, ivlen); | |
552 | buffer_put_string(&m, iv, ivlen); | |
553 | goto skip; | |
554 | } else { | |
555 | /* Kex for rekeying */ | |
b5a28cbc | 556 | mm_send_kex(&m, *pmonitor->m_pkex); |
1853d1ef | 557 | } |
558 | ||
559 | debug3("%s: Sending new keys: %p %p", | |
1588c277 | 560 | __func__, newkeys[MODE_OUT], newkeys[MODE_IN]); |
1853d1ef | 561 | |
562 | /* Keys from Kex */ | |
563 | if (!mm_newkeys_to_blob(MODE_OUT, &blob, &bloblen)) | |
1588c277 | 564 | fatal("%s: conversion of newkeys failed", __func__); |
1853d1ef | 565 | |
566 | buffer_put_string(&m, blob, bloblen); | |
567 | xfree(blob); | |
568 | ||
569 | if (!mm_newkeys_to_blob(MODE_IN, &blob, &bloblen)) | |
1588c277 | 570 | fatal("%s: conversion of newkeys failed", __func__); |
1853d1ef | 571 | |
572 | buffer_put_string(&m, blob, bloblen); | |
573 | xfree(blob); | |
574 | ||
ffd7b36b | 575 | packet_get_state(MODE_OUT, &seqnr, &blocks, &packets); |
576 | buffer_put_int(&m, seqnr); | |
577 | buffer_put_int64(&m, blocks); | |
578 | buffer_put_int(&m, packets); | |
806e4c11 | 579 | packet_get_state(MODE_IN, &seqnr, &blocks, &packets); |
ffd7b36b | 580 | buffer_put_int(&m, seqnr); |
581 | buffer_put_int64(&m, blocks); | |
582 | buffer_put_int(&m, packets); | |
1853d1ef | 583 | |
1588c277 | 584 | debug3("%s: New keys have been sent", __func__); |
1853d1ef | 585 | skip: |
586 | /* More key context */ | |
587 | plen = packet_get_keycontext(MODE_OUT, NULL); | |
588 | p = xmalloc(plen+1); | |
589 | packet_get_keycontext(MODE_OUT, p); | |
590 | buffer_put_string(&m, p, plen); | |
591 | xfree(p); | |
592 | ||
593 | plen = packet_get_keycontext(MODE_IN, NULL); | |
594 | p = xmalloc(plen+1); | |
595 | packet_get_keycontext(MODE_IN, p); | |
596 | buffer_put_string(&m, p, plen); | |
597 | xfree(p); | |
598 | ||
599 | /* Compression state */ | |
1588c277 | 600 | debug3("%s: Sending compression state", __func__); |
1853d1ef | 601 | buffer_put_string(&m, &outgoing_stream, sizeof(outgoing_stream)); |
602 | buffer_put_string(&m, &incoming_stream, sizeof(incoming_stream)); | |
603 | ||
604 | /* Network I/O buffers */ | |
605 | buffer_put_string(&m, buffer_ptr(&input), buffer_len(&input)); | |
606 | buffer_put_string(&m, buffer_ptr(&output), buffer_len(&output)); | |
607 | ||
b5a28cbc | 608 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYEXPORT, &m); |
1588c277 | 609 | debug3("%s: Finished sending state", __func__); |
1853d1ef | 610 | |
611 | buffer_free(&m); | |
612 | } | |
613 | ||
614 | int | |
615 | mm_pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen) | |
616 | { | |
617 | Buffer m; | |
661e45a0 | 618 | char *p; |
1853d1ef | 619 | int success = 0; |
620 | ||
621 | buffer_init(&m); | |
b5a28cbc | 622 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTY, &m); |
1853d1ef | 623 | |
1588c277 | 624 | debug3("%s: waiting for MONITOR_ANS_PTY", __func__); |
b5a28cbc | 625 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PTY, &m); |
1853d1ef | 626 | |
627 | success = buffer_get_int(&m); | |
628 | if (success == 0) { | |
1588c277 | 629 | debug3("%s: pty alloc failed", __func__); |
1853d1ef | 630 | buffer_free(&m); |
631 | return (0); | |
632 | } | |
633 | p = buffer_get_string(&m, NULL); | |
634 | buffer_free(&m); | |
635 | ||
636 | strlcpy(namebuf, p, namebuflen); /* Possible truncation */ | |
637 | xfree(p); | |
638 | ||
b5a28cbc | 639 | *ptyfd = mm_receive_fd(pmonitor->m_recvfd); |
640 | *ttyfd = mm_receive_fd(pmonitor->m_recvfd); | |
1853d1ef | 641 | |
642 | /* Success */ | |
643 | return (1); | |
644 | } | |
645 | ||
646 | void | |
647 | mm_session_pty_cleanup2(void *session) | |
648 | { | |
649 | Session *s = session; | |
650 | Buffer m; | |
651 | ||
652 | if (s->ttyfd == -1) | |
653 | return; | |
654 | buffer_init(&m); | |
655 | buffer_put_cstring(&m, s->tty); | |
b5a28cbc | 656 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTYCLEANUP, &m); |
1853d1ef | 657 | buffer_free(&m); |
658 | ||
659 | /* closed dup'ed master */ | |
660 | if (close(s->ptymaster) < 0) | |
661 | error("close(s->ptymaster): %s", strerror(errno)); | |
662 | ||
663 | /* unlink pty from session */ | |
664 | s->ttyfd = -1; | |
665 | } | |
666 | ||
ad200abb | 667 | #ifdef USE_PAM |
668 | void | |
669 | mm_start_pam(char *user) | |
670 | { | |
671 | Buffer m; | |
672 | ||
1588c277 | 673 | debug3("%s entering", __func__); |
7fceb20d | 674 | if (!options.use_pam) |
675 | fatal("UsePAM=no, but ended up in %s anyway", __func__); | |
ad200abb | 676 | |
677 | buffer_init(&m); | |
678 | buffer_put_cstring(&m, user); | |
679 | ||
b5a28cbc | 680 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_START, &m); |
ad200abb | 681 | |
682 | buffer_free(&m); | |
683 | } | |
05114c74 | 684 | |
685 | void * | |
686 | mm_sshpam_init_ctx(Authctxt *authctxt) | |
687 | { | |
688 | Buffer m; | |
689 | int success; | |
690 | ||
691 | debug3("%s", __func__); | |
692 | buffer_init(&m); | |
693 | buffer_put_cstring(&m, authctxt->user); | |
694 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_INIT_CTX, &m); | |
695 | debug3("%s: waiting for MONITOR_ANS_PAM_INIT_CTX", __func__); | |
696 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_INIT_CTX, &m); | |
697 | success = buffer_get_int(&m); | |
698 | if (success == 0) { | |
699 | debug3("%s: pam_init_ctx failed", __func__); | |
700 | buffer_free(&m); | |
701 | return (NULL); | |
702 | } | |
703 | buffer_free(&m); | |
704 | return (authctxt); | |
705 | } | |
706 | ||
707 | int | |
708 | mm_sshpam_query(void *ctx, char **name, char **info, | |
709 | u_int *num, char ***prompts, u_int **echo_on) | |
710 | { | |
711 | Buffer m; | |
712 | int i, ret; | |
713 | ||
714 | debug3("%s", __func__); | |
715 | buffer_init(&m); | |
716 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_QUERY, &m); | |
717 | debug3("%s: waiting for MONITOR_ANS_PAM_QUERY", __func__); | |
718 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_QUERY, &m); | |
719 | ret = buffer_get_int(&m); | |
720 | debug3("%s: pam_query returned %d", __func__, ret); | |
721 | *name = buffer_get_string(&m, NULL); | |
722 | *info = buffer_get_string(&m, NULL); | |
723 | *num = buffer_get_int(&m); | |
724 | *prompts = xmalloc((*num + 1) * sizeof(char *)); | |
725 | *echo_on = xmalloc((*num + 1) * sizeof(u_int)); | |
726 | for (i = 0; i < *num; ++i) { | |
727 | (*prompts)[i] = buffer_get_string(&m, NULL); | |
728 | (*echo_on)[i] = buffer_get_int(&m); | |
729 | } | |
730 | buffer_free(&m); | |
731 | return (ret); | |
732 | } | |
733 | ||
734 | int | |
735 | mm_sshpam_respond(void *ctx, u_int num, char **resp) | |
736 | { | |
737 | Buffer m; | |
738 | int i, ret; | |
739 | ||
740 | debug3("%s", __func__); | |
741 | buffer_init(&m); | |
742 | buffer_put_int(&m, num); | |
743 | for (i = 0; i < num; ++i) | |
744 | buffer_put_cstring(&m, resp[i]); | |
745 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_RESPOND, &m); | |
746 | debug3("%s: waiting for MONITOR_ANS_PAM_RESPOND", __func__); | |
747 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_RESPOND, &m); | |
748 | ret = buffer_get_int(&m); | |
749 | debug3("%s: pam_respond returned %d", __func__, ret); | |
750 | buffer_free(&m); | |
751 | return (ret); | |
752 | } | |
753 | ||
754 | void | |
755 | mm_sshpam_free_ctx(void *ctxtp) | |
756 | { | |
757 | Buffer m; | |
758 | ||
759 | debug3("%s", __func__); | |
760 | buffer_init(&m); | |
761 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_FREE_CTX, &m); | |
762 | debug3("%s: waiting for MONITOR_ANS_PAM_FREE_CTX", __func__); | |
763 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_FREE_CTX, &m); | |
764 | buffer_free(&m); | |
765 | } | |
ad200abb | 766 | #endif /* USE_PAM */ |
767 | ||
1853d1ef | 768 | /* Request process termination */ |
769 | ||
770 | void | |
771 | mm_terminate(void) | |
772 | { | |
773 | Buffer m; | |
774 | ||
775 | buffer_init(&m); | |
b5a28cbc | 776 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_TERM, &m); |
1853d1ef | 777 | buffer_free(&m); |
778 | } | |
779 | ||
780 | int | |
781 | mm_ssh1_session_key(BIGNUM *num) | |
782 | { | |
783 | int rsafail; | |
784 | Buffer m; | |
785 | ||
786 | buffer_init(&m); | |
787 | buffer_put_bignum2(&m, num); | |
b5a28cbc | 788 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSKEY, &m); |
1853d1ef | 789 | |
b5a28cbc | 790 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SESSKEY, &m); |
1853d1ef | 791 | |
792 | rsafail = buffer_get_int(&m); | |
793 | buffer_get_bignum2(&m, num); | |
794 | ||
795 | buffer_free(&m); | |
796 | ||
797 | return (rsafail); | |
798 | } | |
799 | ||
800 | static void | |
801 | mm_chall_setup(char **name, char **infotxt, u_int *numprompts, | |
802 | char ***prompts, u_int **echo_on) | |
803 | { | |
7203d6bb | 804 | *name = xstrdup(""); |
805 | *infotxt = xstrdup(""); | |
1853d1ef | 806 | *numprompts = 1; |
343288b8 | 807 | *prompts = xmalloc(*numprompts * sizeof(char *)); |
1853d1ef | 808 | *echo_on = xmalloc(*numprompts * sizeof(u_int)); |
809 | (*echo_on)[0] = 0; | |
810 | } | |
811 | ||
812 | int | |
813 | mm_bsdauth_query(void *ctx, char **name, char **infotxt, | |
814 | u_int *numprompts, char ***prompts, u_int **echo_on) | |
815 | { | |
816 | Buffer m; | |
6d6c25e3 | 817 | u_int success; |
1853d1ef | 818 | char *challenge; |
819 | ||
1588c277 | 820 | debug3("%s: entering", __func__); |
1853d1ef | 821 | |
822 | buffer_init(&m); | |
b5a28cbc | 823 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHQUERY, &m); |
1853d1ef | 824 | |
b5a28cbc | 825 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_BSDAUTHQUERY, |
1853d1ef | 826 | &m); |
6d6c25e3 | 827 | success = buffer_get_int(&m); |
828 | if (success == 0) { | |
1588c277 | 829 | debug3("%s: no challenge", __func__); |
1853d1ef | 830 | buffer_free(&m); |
831 | return (-1); | |
832 | } | |
833 | ||
834 | /* Get the challenge, and format the response */ | |
835 | challenge = buffer_get_string(&m, NULL); | |
836 | buffer_free(&m); | |
837 | ||
838 | mm_chall_setup(name, infotxt, numprompts, prompts, echo_on); | |
839 | (*prompts)[0] = challenge; | |
840 | ||
1588c277 | 841 | debug3("%s: received challenge: %s", __func__, challenge); |
1853d1ef | 842 | |
843 | return (0); | |
844 | } | |
845 | ||
846 | int | |
847 | mm_bsdauth_respond(void *ctx, u_int numresponses, char **responses) | |
848 | { | |
849 | Buffer m; | |
850 | int authok; | |
851 | ||
1588c277 | 852 | debug3("%s: entering", __func__); |
1853d1ef | 853 | if (numresponses != 1) |
854 | return (-1); | |
855 | ||
856 | buffer_init(&m); | |
857 | buffer_put_cstring(&m, responses[0]); | |
b5a28cbc | 858 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHRESPOND, &m); |
1853d1ef | 859 | |
b5a28cbc | 860 | mm_request_receive_expect(pmonitor->m_recvfd, |
1853d1ef | 861 | MONITOR_ANS_BSDAUTHRESPOND, &m); |
862 | ||
863 | authok = buffer_get_int(&m); | |
864 | buffer_free(&m); | |
865 | ||
866 | return ((authok == 0) ? -1 : 0); | |
867 | } | |
868 | ||
869 | int | |
870 | mm_skey_query(void *ctx, char **name, char **infotxt, | |
871 | u_int *numprompts, char ***prompts, u_int **echo_on) | |
872 | { | |
873 | Buffer m; | |
6d6c25e3 | 874 | int len; |
875 | u_int success; | |
1853d1ef | 876 | char *p, *challenge; |
877 | ||
1588c277 | 878 | debug3("%s: entering", __func__); |
1853d1ef | 879 | |
880 | buffer_init(&m); | |
b5a28cbc | 881 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYQUERY, &m); |
1853d1ef | 882 | |
b5a28cbc | 883 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SKEYQUERY, |
1853d1ef | 884 | &m); |
6d6c25e3 | 885 | success = buffer_get_int(&m); |
886 | if (success == 0) { | |
1588c277 | 887 | debug3("%s: no challenge", __func__); |
1853d1ef | 888 | buffer_free(&m); |
889 | return (-1); | |
890 | } | |
891 | ||
892 | /* Get the challenge, and format the response */ | |
893 | challenge = buffer_get_string(&m, NULL); | |
894 | buffer_free(&m); | |
895 | ||
1588c277 | 896 | debug3("%s: received challenge: %s", __func__, challenge); |
1853d1ef | 897 | |
898 | mm_chall_setup(name, infotxt, numprompts, prompts, echo_on); | |
899 | ||
900 | len = strlen(challenge) + strlen(SKEY_PROMPT) + 1; | |
901 | p = xmalloc(len); | |
902 | strlcpy(p, challenge, len); | |
903 | strlcat(p, SKEY_PROMPT, len); | |
904 | (*prompts)[0] = p; | |
905 | xfree(challenge); | |
906 | ||
907 | return (0); | |
908 | } | |
909 | ||
910 | int | |
911 | mm_skey_respond(void *ctx, u_int numresponses, char **responses) | |
912 | { | |
913 | Buffer m; | |
914 | int authok; | |
915 | ||
1588c277 | 916 | debug3("%s: entering", __func__); |
1853d1ef | 917 | if (numresponses != 1) |
918 | return (-1); | |
919 | ||
920 | buffer_init(&m); | |
921 | buffer_put_cstring(&m, responses[0]); | |
b5a28cbc | 922 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYRESPOND, &m); |
1853d1ef | 923 | |
b5a28cbc | 924 | mm_request_receive_expect(pmonitor->m_recvfd, |
1853d1ef | 925 | MONITOR_ANS_SKEYRESPOND, &m); |
926 | ||
927 | authok = buffer_get_int(&m); | |
928 | buffer_free(&m); | |
929 | ||
930 | return ((authok == 0) ? -1 : 0); | |
931 | } | |
932 | ||
933 | void | |
934 | mm_ssh1_session_id(u_char session_id[16]) | |
935 | { | |
936 | Buffer m; | |
937 | int i; | |
938 | ||
1588c277 | 939 | debug3("%s entering", __func__); |
1853d1ef | 940 | |
941 | buffer_init(&m); | |
942 | for (i = 0; i < 16; i++) | |
943 | buffer_put_char(&m, session_id[i]); | |
944 | ||
b5a28cbc | 945 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSID, &m); |
1853d1ef | 946 | buffer_free(&m); |
947 | } | |
948 | ||
949 | int | |
950 | mm_auth_rsa_key_allowed(struct passwd *pw, BIGNUM *client_n, Key **rkey) | |
951 | { | |
952 | Buffer m; | |
953 | Key *key; | |
954 | u_char *blob; | |
955 | u_int blen; | |
92e15201 | 956 | int allowed = 0, have_forced = 0; |
1853d1ef | 957 | |
1588c277 | 958 | debug3("%s entering", __func__); |
1853d1ef | 959 | |
960 | buffer_init(&m); | |
961 | buffer_put_bignum2(&m, client_n); | |
962 | ||
b5a28cbc | 963 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSAKEYALLOWED, &m); |
964 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSAKEYALLOWED, &m); | |
1853d1ef | 965 | |
966 | allowed = buffer_get_int(&m); | |
967 | ||
92e15201 | 968 | /* fake forced command */ |
969 | auth_clear_options(); | |
970 | have_forced = buffer_get_int(&m); | |
971 | forced_command = have_forced ? xstrdup("true") : NULL; | |
972 | ||
1853d1ef | 973 | if (allowed && rkey != NULL) { |
974 | blob = buffer_get_string(&m, &blen); | |
975 | if ((key = key_from_blob(blob, blen)) == NULL) | |
1588c277 | 976 | fatal("%s: key_from_blob failed", __func__); |
1853d1ef | 977 | *rkey = key; |
978 | xfree(blob); | |
979 | } | |
980 | mm_send_debug(&m); | |
981 | buffer_free(&m); | |
982 | ||
983 | return (allowed); | |
984 | } | |
985 | ||
986 | BIGNUM * | |
987 | mm_auth_rsa_generate_challenge(Key *key) | |
988 | { | |
989 | Buffer m; | |
990 | BIGNUM *challenge; | |
991 | u_char *blob; | |
992 | u_int blen; | |
993 | ||
1588c277 | 994 | debug3("%s entering", __func__); |
1853d1ef | 995 | |
996 | if ((challenge = BN_new()) == NULL) | |
1588c277 | 997 | fatal("%s: BN_new failed", __func__); |
1853d1ef | 998 | |
999 | key->type = KEY_RSA; /* XXX cheat for key_to_blob */ | |
1000 | if (key_to_blob(key, &blob, &blen) == 0) | |
1588c277 | 1001 | fatal("%s: key_to_blob failed", __func__); |
1853d1ef | 1002 | key->type = KEY_RSA1; |
1003 | ||
1004 | buffer_init(&m); | |
1005 | buffer_put_string(&m, blob, blen); | |
1006 | xfree(blob); | |
1007 | ||
b5a28cbc | 1008 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSACHALLENGE, &m); |
1009 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSACHALLENGE, &m); | |
1853d1ef | 1010 | |
1011 | buffer_get_bignum2(&m, challenge); | |
1012 | buffer_free(&m); | |
1013 | ||
1014 | return (challenge); | |
1015 | } | |
1016 | ||
1017 | int | |
1018 | mm_auth_rsa_verify_response(Key *key, BIGNUM *p, u_char response[16]) | |
1019 | { | |
1020 | Buffer m; | |
1021 | u_char *blob; | |
1022 | u_int blen; | |
1023 | int success = 0; | |
1024 | ||
1588c277 | 1025 | debug3("%s entering", __func__); |
1853d1ef | 1026 | |
1027 | key->type = KEY_RSA; /* XXX cheat for key_to_blob */ | |
1028 | if (key_to_blob(key, &blob, &blen) == 0) | |
1588c277 | 1029 | fatal("%s: key_to_blob failed", __func__); |
1853d1ef | 1030 | key->type = KEY_RSA1; |
1031 | ||
1032 | buffer_init(&m); | |
1033 | buffer_put_string(&m, blob, blen); | |
1034 | buffer_put_string(&m, response, 16); | |
1035 | xfree(blob); | |
1036 | ||
b5a28cbc | 1037 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSARESPONSE, &m); |
1038 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSARESPONSE, &m); | |
1853d1ef | 1039 | |
1040 | success = buffer_get_int(&m); | |
1041 | buffer_free(&m); | |
1042 | ||
1043 | return (success); | |
1044 | } | |
696f6bef | 1045 | |
1046 | #ifdef KRB5 | |
1047 | int | |
1048 | mm_auth_krb5(void *ctx, void *argp, char **userp, void *resp) | |
1049 | { | |
1050 | krb5_data *tkt, *reply; | |
1051 | Buffer m; | |
1052 | int success; | |
1053 | ||
1054 | debug3("%s entering", __func__); | |
1055 | tkt = (krb5_data *) argp; | |
1056 | reply = (krb5_data *) resp; | |
1057 | ||
1058 | buffer_init(&m); | |
1059 | buffer_put_string(&m, tkt->data, tkt->length); | |
1060 | ||
1061 | mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KRB5, &m); | |
1062 | mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KRB5, &m); | |
1063 | ||
1064 | success = buffer_get_int(&m); | |
1065 | if (success) { | |
1066 | u_int len; | |
1067 | ||
1068 | *userp = buffer_get_string(&m, NULL); | |
1069 | reply->data = buffer_get_string(&m, &len); | |
1070 | reply->length = len; | |
1071 | } else { | |
1072 | memset(reply, 0, sizeof(*reply)); | |
1073 | *userp = NULL; | |
1074 | } | |
1075 | ||
1076 | buffer_free(&m); | |
1077 | return (success); | |
1078 | } | |
1079 | #endif |