Annotation of src/usr.bin/ssh/auth2.c, Revision 1.34
1.1 markus 1: /*
2: * Copyright (c) 2000 Markus Friedl. All rights reserved.
3: *
4: * Redistribution and use in source and binary forms, with or without
5: * modification, are permitted provided that the following conditions
6: * are met:
7: * 1. Redistributions of source code must retain the above copyright
8: * notice, this list of conditions and the following disclaimer.
9: * 2. Redistributions in binary form must reproduce the above copyright
10: * notice, this list of conditions and the following disclaimer in the
11: * documentation and/or other materials provided with the distribution.
12: *
13: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: */
1.14 deraadt 24:
1.1 markus 25: #include "includes.h"
1.34 ! markus 26: RCSID("$OpenBSD: auth2.c,v 1.33 2001/01/22 08:32:53 markus Exp $");
1.1 markus 27:
28: #include <openssl/evp.h>
29:
1.32 markus 30: #include "ssh2.h"
1.1 markus 31: #include "xmalloc.h"
32: #include "rsa.h"
33: #include "pty.h"
34: #include "packet.h"
35: #include "buffer.h"
1.32 markus 36: #include "log.h"
1.1 markus 37: #include "servconf.h"
38: #include "compat.h"
39: #include "channels.h"
40: #include "bufaux.h"
41: #include "auth.h"
42: #include "session.h"
43: #include "dispatch.h"
44: #include "auth.h"
45: #include "key.h"
1.32 markus 46: #include "cipher.h"
47: #include "kex.h"
1.29 markus 48: #include "pathnames.h"
1.1 markus 49: #include "uidswap.h"
1.10 markus 50: #include "auth-options.h"
1.1 markus 51:
52: /* import */
53: extern ServerOptions options;
1.23 markus 54: extern u_char *session_id2;
1.1 markus 55: extern int session_id2_len;
56:
1.18 markus 57: static Authctxt *x_authctxt = NULL;
58: static int one = 1;
59:
60: typedef struct Authmethod Authmethod;
61: struct Authmethod {
62: char *name;
63: int (*userauth)(Authctxt *authctxt);
64: int *enabled;
65: };
66:
1.1 markus 67: /* protocol */
68:
1.15 markus 69: void input_service_request(int type, int plen, void *ctxt);
70: void input_userauth_request(int type, int plen, void *ctxt);
71: void protocol_error(int type, int plen, void *ctxt);
1.1 markus 72:
73: /* helper */
1.18 markus 74: Authmethod *authmethod_lookup(const char *name);
75: struct passwd *pwcopy(struct passwd *pw);
1.21 markus 76: int user_key_allowed(struct passwd *pw, Key *key);
1.18 markus 77: char *authmethods_get(void);
1.1 markus 78:
1.18 markus 79: /* auth */
1.25 markus 80: void userauth_banner(void);
1.18 markus 81: int userauth_none(Authctxt *authctxt);
82: int userauth_passwd(Authctxt *authctxt);
83: int userauth_pubkey(Authctxt *authctxt);
84: int userauth_kbdint(Authctxt *authctxt);
85:
86: Authmethod authmethods[] = {
87: {"none",
88: userauth_none,
89: &one},
90: {"publickey",
91: userauth_pubkey,
1.21 markus 92: &options.pubkey_authentication},
1.18 markus 93: {"keyboard-interactive",
94: userauth_kbdint,
95: &options.kbd_interactive_authentication},
96: {"password",
97: userauth_passwd,
98: &options.password_authentication},
99: {NULL, NULL, NULL}
1.1 markus 100: };
101:
102: /*
1.18 markus 103: * loop until authctxt->success == TRUE
1.1 markus 104: */
105:
106: void
107: do_authentication2()
108: {
1.28 markus 109: Authctxt *authctxt = authctxt_new();
110:
1.18 markus 111: x_authctxt = authctxt; /*XXX*/
112:
1.34 ! markus 113: /* challenge-reponse is implemented via keyboard interactive */
! 114: if (options.challenge_reponse_authentication)
! 115: options.kbd_interactive_authentication = 1;
! 116:
1.26 markus 117: #ifdef AFS
118: /* If machine has AFS, set process authentication group. */
119: if (k_hasafs()) {
120: k_setpag();
121: k_unlog();
122: }
1.5 djm 123: #endif
1.1 markus 124: dispatch_init(&protocol_error);
125: dispatch_set(SSH2_MSG_SERVICE_REQUEST, &input_service_request);
1.18 markus 126: dispatch_run(DISPATCH_BLOCK, &authctxt->success, authctxt);
1.28 markus 127: do_authenticated2(authctxt);
1.1 markus 128: }
129:
130: void
1.15 markus 131: protocol_error(int type, int plen, void *ctxt)
1.1 markus 132: {
133: log("auth: protocol error: type %d plen %d", type, plen);
134: packet_start(SSH2_MSG_UNIMPLEMENTED);
135: packet_put_int(0);
136: packet_send();
137: packet_write_wait();
138: }
139:
140: void
1.15 markus 141: input_service_request(int type, int plen, void *ctxt)
1.1 markus 142: {
1.18 markus 143: Authctxt *authctxt = ctxt;
1.23 markus 144: u_int len;
1.1 markus 145: int accept = 0;
146: char *service = packet_get_string(&len);
147: packet_done();
148:
1.18 markus 149: if (authctxt == NULL)
150: fatal("input_service_request: no authctxt");
151:
1.1 markus 152: if (strcmp(service, "ssh-userauth") == 0) {
1.18 markus 153: if (!authctxt->success) {
1.1 markus 154: accept = 1;
155: /* now we can handle user-auth requests */
156: dispatch_set(SSH2_MSG_USERAUTH_REQUEST, &input_userauth_request);
157: }
158: }
159: /* XXX all other service requests are denied */
160:
161: if (accept) {
162: packet_start(SSH2_MSG_SERVICE_ACCEPT);
163: packet_put_cstring(service);
164: packet_send();
165: packet_write_wait();
166: } else {
167: debug("bad service request %s", service);
168: packet_disconnect("bad service request %s", service);
169: }
170: xfree(service);
171: }
172:
173: void
1.15 markus 174: input_userauth_request(int type, int plen, void *ctxt)
1.1 markus 175: {
1.18 markus 176: Authctxt *authctxt = ctxt;
177: Authmethod *m = NULL;
1.28 markus 178: char *user, *service, *method, *style = NULL;
1.1 markus 179: int authenticated = 0;
180:
1.18 markus 181: if (authctxt == NULL)
182: fatal("input_userauth_request: no authctxt");
1.1 markus 183:
1.18 markus 184: user = packet_get_string(NULL);
185: service = packet_get_string(NULL);
186: method = packet_get_string(NULL);
1.1 markus 187: debug("userauth-request for user %s service %s method %s", user, service, method);
1.24 markus 188: debug("attempt %d failures %d", authctxt->attempt, authctxt->failures);
1.1 markus 189:
1.28 markus 190: if ((style = strchr(user, ':')) != NULL)
191: *style++ = 0;
192:
1.24 markus 193: if (authctxt->attempt++ == 0) {
1.18 markus 194: /* setup auth context */
195: struct passwd *pw = NULL;
196: setproctitle("%s", user);
197: pw = getpwnam(user);
198: if (pw && allowed_user(pw) && strcmp(service, "ssh-connection")==0) {
199: authctxt->pw = pwcopy(pw);
200: authctxt->valid = 1;
201: debug2("input_userauth_request: setting up authctxt for %s", user);
202: } else {
203: log("input_userauth_request: illegal user %s", user);
204: }
205: authctxt->user = xstrdup(user);
206: authctxt->service = xstrdup(service);
1.28 markus 207: authctxt->style = style ? xstrdup(style) : NULL; /* currently unused */
1.18 markus 208: } else if (authctxt->valid) {
209: if (strcmp(user, authctxt->user) != 0 ||
210: strcmp(service, authctxt->service) != 0) {
211: log("input_userauth_request: missmatch: (%s,%s)!=(%s,%s)",
212: user, service, authctxt->user, authctxt->service);
213: authctxt->valid = 0;
1.1 markus 214: }
215: }
1.28 markus 216: /* reset state */
217: dispatch_set(SSH2_MSG_USERAUTH_INFO_RESPONSE, &protocol_error);
218: authctxt->postponed = 0;
1.18 markus 219:
1.28 markus 220: /* try to authenticate user */
1.18 markus 221: m = authmethod_lookup(method);
222: if (m != NULL) {
223: debug2("input_userauth_request: try method %s", method);
224: authenticated = m->userauth(authctxt);
225: }
1.28 markus 226: if (!authctxt->valid && authenticated)
227: fatal("INTERNAL ERROR: authenticated invalid user %s",
228: authctxt->user);
1.18 markus 229:
230: /* Special handling for root */
1.28 markus 231: if (authenticated && authctxt->pw->pw_uid == 0 && !auth_root_allowed())
1.3 markus 232: authenticated = 0;
233:
1.18 markus 234: /* Log before sending the reply */
1.28 markus 235: auth_log(authctxt, authenticated, method, " ssh2");
236:
237: if (!authctxt->postponed)
238: userauth_reply(authctxt, authenticated);
1.18 markus 239:
240: xfree(service);
241: xfree(user);
242: xfree(method);
243: }
244:
1.25 markus 245: void
246: userauth_banner(void)
247: {
248: struct stat st;
249: char *banner = NULL;
250: off_t len, n;
251: int fd;
252:
253: if (options.banner == NULL || (datafellows & SSH_BUG_BANNER))
254: return;
255: if ((fd = open(options.banner, O_RDONLY)) < 0) {
256: error("userauth_banner: open %s failed: %s",
257: options.banner, strerror(errno));
258: return;
259: }
260: if (fstat(fd, &st) < 0)
261: goto done;
262: len = st.st_size;
263: banner = xmalloc(len + 1);
264: if ((n = read(fd, banner, len)) < 0)
265: goto done;
266: banner[n] = '\0';
267: packet_start(SSH2_MSG_USERAUTH_BANNER);
268: packet_put_cstring(banner);
269: packet_put_cstring(""); /* language, unused */
270: packet_send();
271: debug("userauth_banner: sent");
272: done:
273: if (banner)
274: xfree(banner);
275: close(fd);
276: return;
277: }
1.18 markus 278:
279: void
280: userauth_reply(Authctxt *authctxt, int authenticated)
281: {
1.24 markus 282: char *methods;
1.28 markus 283:
1.3 markus 284: /* XXX todo: check if multiple auth methods are needed */
1.28 markus 285: if (authenticated) {
1.1 markus 286: /* turn off userauth */
287: dispatch_set(SSH2_MSG_USERAUTH_REQUEST, &protocol_error);
288: packet_start(SSH2_MSG_USERAUTH_SUCCESS);
289: packet_send();
290: packet_write_wait();
291: /* now we can break out */
1.18 markus 292: authctxt->success = 1;
1.28 markus 293: } else {
294: if (authctxt->failures++ > AUTH_FAIL_MAX)
295: packet_disconnect(AUTH_FAIL_MSG, authctxt->user);
1.24 markus 296: methods = authmethods_get();
1.1 markus 297: packet_start(SSH2_MSG_USERAUTH_FAILURE);
1.18 markus 298: packet_put_cstring(methods);
299: packet_put_char(0); /* XXX partial success, unused */
1.1 markus 300: packet_send();
301: packet_write_wait();
1.18 markus 302: xfree(methods);
1.1 markus 303: }
304: }
305:
306: int
1.18 markus 307: userauth_none(Authctxt *authctxt)
1.1 markus 308: {
1.18 markus 309: /* disable method "none", only allowed one time */
310: Authmethod *m = authmethod_lookup("none");
311: if (m != NULL)
312: m->enabled = NULL;
1.1 markus 313: packet_done();
1.25 markus 314: userauth_banner();
1.18 markus 315: return authctxt->valid ? auth_password(authctxt->pw, "") : 0;
1.1 markus 316: }
1.18 markus 317:
1.1 markus 318: int
1.18 markus 319: userauth_passwd(Authctxt *authctxt)
1.1 markus 320: {
321: char *password;
322: int authenticated = 0;
323: int change;
1.23 markus 324: u_int len;
1.1 markus 325: change = packet_get_char();
326: if (change)
327: log("password change not supported");
328: password = packet_get_string(&len);
329: packet_done();
1.18 markus 330: if (authctxt->valid &&
331: auth_password(authctxt->pw, password) == 1)
1.1 markus 332: authenticated = 1;
333: memset(password, 0, len);
334: xfree(password);
335: return authenticated;
336: }
1.18 markus 337:
338: int
339: userauth_kbdint(Authctxt *authctxt)
340: {
341: int authenticated = 0;
342: char *lang = NULL;
343: char *devs = NULL;
344:
345: lang = packet_get_string(NULL);
346: devs = packet_get_string(NULL);
347: packet_done();
348:
349: debug("keyboard-interactive language %s devs %s", lang, devs);
1.28 markus 350:
1.34 ! markus 351: if (options.challenge_reponse_authentication)
! 352: authenticated = auth2_challenge(authctxt, devs);
1.28 markus 353:
1.18 markus 354: xfree(lang);
355: xfree(devs);
356: return authenticated;
357: }
358:
1.1 markus 359: int
1.18 markus 360: userauth_pubkey(Authctxt *authctxt)
1.1 markus 361: {
362: Buffer b;
363: Key *key;
364: char *pkalg, *pkblob, *sig;
1.23 markus 365: u_int alen, blen, slen;
1.21 markus 366: int have_sig, pktype;
1.1 markus 367: int authenticated = 0;
368:
1.18 markus 369: if (!authctxt->valid) {
370: debug2("userauth_pubkey: disabled because of invalid user");
1.8 markus 371: return 0;
372: }
1.1 markus 373: have_sig = packet_get_char();
1.22 markus 374: if (datafellows & SSH_BUG_PKAUTH) {
375: debug2("userauth_pubkey: SSH_BUG_PKAUTH");
376: /* no explicit pkalg given */
377: pkblob = packet_get_string(&blen);
378: buffer_init(&b);
379: buffer_append(&b, pkblob, blen);
380: /* so we have to extract the pkalg from the pkblob */
381: pkalg = buffer_get_string(&b, &alen);
382: buffer_free(&b);
383: } else {
384: pkalg = packet_get_string(&alen);
385: pkblob = packet_get_string(&blen);
386: }
1.21 markus 387: pktype = key_type_from_name(pkalg);
388: if (pktype == KEY_UNSPEC) {
1.22 markus 389: /* this is perfectly legal */
390: log("userauth_pubkey: unsupported public key algorithm: %s", pkalg);
1.1 markus 391: xfree(pkalg);
1.22 markus 392: xfree(pkblob);
1.1 markus 393: return 0;
394: }
1.21 markus 395: key = key_from_blob(pkblob, blen);
1.2 markus 396: if (key != NULL) {
397: if (have_sig) {
398: sig = packet_get_string(&slen);
399: packet_done();
400: buffer_init(&b);
1.20 markus 401: if (datafellows & SSH_OLD_SESSIONID) {
402: buffer_append(&b, session_id2, session_id2_len);
403: } else {
1.11 markus 404: buffer_put_string(&b, session_id2, session_id2_len);
405: }
1.9 markus 406: /* reconstruct packet */
1.2 markus 407: buffer_put_char(&b, SSH2_MSG_USERAUTH_REQUEST);
1.18 markus 408: buffer_put_cstring(&b, authctxt->user);
1.9 markus 409: buffer_put_cstring(&b,
1.22 markus 410: datafellows & SSH_BUG_PKSERVICE ?
1.9 markus 411: "ssh-userauth" :
1.18 markus 412: authctxt->service);
1.22 markus 413: if (datafellows & SSH_BUG_PKAUTH) {
414: buffer_put_char(&b, have_sig);
415: } else {
416: buffer_put_cstring(&b, "publickey");
417: buffer_put_char(&b, have_sig);
418: buffer_put_cstring(&b, key_ssh_name(key));
419: }
1.9 markus 420: buffer_put_string(&b, pkblob, blen);
1.21 markus 421: #ifdef DEBUG_PK
1.2 markus 422: buffer_dump(&b);
1.1 markus 423: #endif
1.2 markus 424: /* test for correct signature */
1.21 markus 425: if (user_key_allowed(authctxt->pw, key) &&
426: key_verify(key, sig, slen, buffer_ptr(&b), buffer_len(&b)) == 1)
1.2 markus 427: authenticated = 1;
428: buffer_clear(&b);
429: xfree(sig);
430: } else {
1.18 markus 431: debug("test whether pkalg/pkblob are acceptable");
1.2 markus 432: packet_done();
1.18 markus 433:
1.2 markus 434: /* XXX fake reply and always send PK_OK ? */
1.6 markus 435: /*
436: * XXX this allows testing whether a user is allowed
437: * to login: if you happen to have a valid pubkey this
438: * message is sent. the message is NEVER sent at all
439: * if a user is not allowed to login. is this an
440: * issue? -markus
441: */
1.21 markus 442: if (user_key_allowed(authctxt->pw, key)) {
1.2 markus 443: packet_start(SSH2_MSG_USERAUTH_PK_OK);
444: packet_put_string(pkalg, alen);
445: packet_put_string(pkblob, blen);
446: packet_send();
447: packet_write_wait();
448: authenticated = -1;
449: }
1.1 markus 450: }
1.17 markus 451: if (authenticated != 1)
452: auth_clear_options();
1.2 markus 453: key_free(key);
1.1 markus 454: }
1.21 markus 455: debug2("userauth_pubkey: authenticated %d pkalg %s", authenticated, pkalg);
1.1 markus 456: xfree(pkalg);
457: xfree(pkblob);
458: return authenticated;
459: }
460:
1.18 markus 461: /* get current user */
1.1 markus 462:
463: struct passwd*
464: auth_get_user(void)
465: {
1.18 markus 466: return (x_authctxt != NULL && x_authctxt->valid) ? x_authctxt->pw : NULL;
1.1 markus 467: }
468:
1.18 markus 469: #define DELIM ","
470:
471: char *
472: authmethods_get(void)
1.1 markus 473: {
1.18 markus 474: Authmethod *method = NULL;
1.23 markus 475: u_int size = 0;
1.18 markus 476: char *list;
1.1 markus 477:
1.18 markus 478: for (method = authmethods; method->name != NULL; method++) {
479: if (strcmp(method->name, "none") == 0)
480: continue;
481: if (method->enabled != NULL && *(method->enabled) != 0) {
482: if (size != 0)
483: size += strlen(DELIM);
484: size += strlen(method->name);
1.1 markus 485: }
1.18 markus 486: }
487: size++; /* trailing '\0' */
488: list = xmalloc(size);
489: list[0] = '\0';
490:
491: for (method = authmethods; method->name != NULL; method++) {
492: if (strcmp(method->name, "none") == 0)
493: continue;
494: if (method->enabled != NULL && *(method->enabled) != 0) {
495: if (list[0] != '\0')
496: strlcat(list, DELIM, size);
497: strlcat(list, method->name, size);
1.1 markus 498: }
499: }
1.18 markus 500: return list;
501: }
502:
503: Authmethod *
504: authmethod_lookup(const char *name)
505: {
506: Authmethod *method = NULL;
507: if (name != NULL)
508: for (method = authmethods; method->name != NULL; method++)
509: if (method->enabled != NULL &&
510: *(method->enabled) != 0 &&
511: strcmp(name, method->name) == 0)
512: return method;
513: debug2("Unrecognized authentication method name: %s", name ? name : "NULL");
514: return NULL;
1.1 markus 515: }
516:
517: /* return 1 if user allows given key */
518: int
1.21 markus 519: user_key_allowed(struct passwd *pw, Key *key)
1.1 markus 520: {
1.31 markus 521: char line[8192], file[MAXPATHLEN];
1.1 markus 522: int found_key = 0;
523: FILE *f;
1.23 markus 524: u_long linenum = 0;
1.1 markus 525: struct stat st;
526: Key *found;
527:
1.18 markus 528: if (pw == NULL)
529: return 0;
530:
1.1 markus 531: /* Temporarily use the user's uid. */
532: temporarily_use_uid(pw->pw_uid);
533:
534: /* The authorized keys. */
535: snprintf(file, sizeof file, "%.500s/%.100s", pw->pw_dir,
1.29 markus 536: _PATH_SSH_USER_PERMITTED_KEYS2);
1.1 markus 537:
538: /* Fail quietly if file does not exist */
539: if (stat(file, &st) < 0) {
540: /* Restore the privileged uid. */
541: restore_uid();
542: return 0;
543: }
544: /* Open the file containing the authorized keys. */
545: f = fopen(file, "r");
546: if (!f) {
547: /* Restore the privileged uid. */
548: restore_uid();
549: return 0;
550: }
551: if (options.strict_modes) {
552: int fail = 0;
553: char buf[1024];
554: /* Check open file in order to avoid open/stat races */
555: if (fstat(fileno(f), &st) < 0 ||
556: (st.st_uid != 0 && st.st_uid != pw->pw_uid) ||
557: (st.st_mode & 022) != 0) {
1.16 markus 558: snprintf(buf, sizeof buf,
559: "%s authentication refused for %.100s: "
560: "bad ownership or modes for '%s'.",
561: key_type(key), pw->pw_name, file);
1.1 markus 562: fail = 1;
563: } else {
1.29 markus 564: /* Check path to _PATH_SSH_USER_PERMITTED_KEYS */
1.1 markus 565: int i;
566: static const char *check[] = {
1.29 markus 567: "", _PATH_SSH_USER_DIR, NULL
1.1 markus 568: };
569: for (i = 0; check[i]; i++) {
570: snprintf(line, sizeof line, "%.500s/%.100s",
571: pw->pw_dir, check[i]);
572: if (stat(line, &st) < 0 ||
573: (st.st_uid != 0 && st.st_uid != pw->pw_uid) ||
574: (st.st_mode & 022) != 0) {
575: snprintf(buf, sizeof buf,
1.16 markus 576: "%s authentication refused for %.100s: "
1.1 markus 577: "bad ownership or modes for '%s'.",
1.16 markus 578: key_type(key), pw->pw_name, line);
1.1 markus 579: fail = 1;
580: break;
581: }
582: }
583: }
584: if (fail) {
585: fclose(f);
1.12 todd 586: log("%s",buf);
1.1 markus 587: restore_uid();
588: return 0;
589: }
590: }
591: found_key = 0;
1.16 markus 592: found = key_new(key->type);
1.1 markus 593:
594: while (fgets(line, sizeof(line), f)) {
1.10 markus 595: char *cp, *options = NULL;
1.1 markus 596: linenum++;
597: /* Skip leading whitespace, empty and comment lines. */
598: for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
599: ;
600: if (!*cp || *cp == '\n' || *cp == '#')
601: continue;
1.10 markus 602:
1.21 markus 603: if (key_read(found, &cp) == -1) {
1.10 markus 604: /* no key? check if there are options for this key */
605: int quoted = 0;
1.21 markus 606: debug2("user_key_allowed: check options: '%s'", cp);
1.10 markus 607: options = cp;
608: for (; *cp && (quoted || (*cp != ' ' && *cp != '\t')); cp++) {
609: if (*cp == '\\' && cp[1] == '"')
610: cp++; /* Skip both */
611: else if (*cp == '"')
612: quoted = !quoted;
613: }
614: /* Skip remaining whitespace. */
615: for (; *cp == ' ' || *cp == '\t'; cp++)
616: ;
1.21 markus 617: if (key_read(found, &cp) == -1) {
618: debug2("user_key_allowed: advance: '%s'", cp);
1.10 markus 619: /* still no key? advance to next line*/
620: continue;
621: }
622: }
623: if (key_equal(found, key) &&
1.30 markus 624: auth_parse_options(pw, options, file, linenum) == 1) {
1.1 markus 625: found_key = 1;
626: debug("matching key found: file %s, line %ld",
627: file, linenum);
628: break;
629: }
630: }
631: restore_uid();
632: fclose(f);
633: key_free(found);
634: return found_key;
635: }
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