Annotation of src/usr.bin/ssh/auth2.c, Revision 1.51
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"
1.51 ! markus 26: RCSID("$OpenBSD: auth2.c,v 1.50 2001/04/04 20:32:56 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"
1.45 djm 33: #include "sshpty.h"
1.1 markus 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 "key.h"
1.32 markus 45: #include "cipher.h"
46: #include "kex.h"
1.29 markus 47: #include "pathnames.h"
1.1 markus 48: #include "uidswap.h"
1.10 markus 49: #include "auth-options.h"
1.43 markus 50: #include "misc.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);
1.21 markus 75: int user_key_allowed(struct passwd *pw, Key *key);
1.18 markus 76: char *authmethods_get(void);
1.1 markus 77:
1.18 markus 78: /* auth */
1.25 markus 79: void userauth_banner(void);
1.49 markus 80: void userauth_reply(Authctxt *authctxt, int authenticated);
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},
1.40 markus 93: {"password",
94: userauth_passwd,
95: &options.password_authentication},
1.18 markus 96: {"keyboard-interactive",
97: userauth_kbdint,
98: &options.kbd_interactive_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:
1.1 markus 117: dispatch_init(&protocol_error);
118: dispatch_set(SSH2_MSG_SERVICE_REQUEST, &input_service_request);
1.18 markus 119: dispatch_run(DISPATCH_BLOCK, &authctxt->success, authctxt);
1.48 markus 120: do_authenticated(authctxt);
1.1 markus 121: }
122:
123: void
1.15 markus 124: protocol_error(int type, int plen, void *ctxt)
1.1 markus 125: {
126: log("auth: protocol error: type %d plen %d", type, plen);
127: packet_start(SSH2_MSG_UNIMPLEMENTED);
128: packet_put_int(0);
129: packet_send();
130: packet_write_wait();
131: }
132:
133: void
1.15 markus 134: input_service_request(int type, int plen, void *ctxt)
1.1 markus 135: {
1.18 markus 136: Authctxt *authctxt = ctxt;
1.23 markus 137: u_int len;
1.1 markus 138: int accept = 0;
139: char *service = packet_get_string(&len);
140: packet_done();
141:
1.18 markus 142: if (authctxt == NULL)
143: fatal("input_service_request: no authctxt");
144:
1.1 markus 145: if (strcmp(service, "ssh-userauth") == 0) {
1.18 markus 146: if (!authctxt->success) {
1.1 markus 147: accept = 1;
148: /* now we can handle user-auth requests */
149: dispatch_set(SSH2_MSG_USERAUTH_REQUEST, &input_userauth_request);
150: }
151: }
152: /* XXX all other service requests are denied */
153:
154: if (accept) {
155: packet_start(SSH2_MSG_SERVICE_ACCEPT);
156: packet_put_cstring(service);
157: packet_send();
158: packet_write_wait();
159: } else {
160: debug("bad service request %s", service);
161: packet_disconnect("bad service request %s", service);
162: }
163: xfree(service);
164: }
165:
166: void
1.15 markus 167: input_userauth_request(int type, int plen, void *ctxt)
1.1 markus 168: {
1.18 markus 169: Authctxt *authctxt = ctxt;
170: Authmethod *m = NULL;
1.28 markus 171: char *user, *service, *method, *style = NULL;
1.1 markus 172: int authenticated = 0;
173:
1.18 markus 174: if (authctxt == NULL)
175: fatal("input_userauth_request: no authctxt");
1.1 markus 176:
1.18 markus 177: user = packet_get_string(NULL);
178: service = packet_get_string(NULL);
179: method = packet_get_string(NULL);
1.1 markus 180: debug("userauth-request for user %s service %s method %s", user, service, method);
1.24 markus 181: debug("attempt %d failures %d", authctxt->attempt, authctxt->failures);
1.1 markus 182:
1.28 markus 183: if ((style = strchr(user, ':')) != NULL)
184: *style++ = 0;
185:
1.36 stevesk 186: if (authctxt->attempt++ == 0) {
1.18 markus 187: /* setup auth context */
188: struct passwd *pw = NULL;
189: pw = getpwnam(user);
190: if (pw && allowed_user(pw) && strcmp(service, "ssh-connection")==0) {
191: authctxt->pw = pwcopy(pw);
192: authctxt->valid = 1;
193: debug2("input_userauth_request: setting up authctxt for %s", user);
194: } else {
195: log("input_userauth_request: illegal user %s", user);
196: }
1.42 markus 197: setproctitle("%s", pw ? user : "unknown");
1.18 markus 198: authctxt->user = xstrdup(user);
199: authctxt->service = xstrdup(service);
1.28 markus 200: authctxt->style = style ? xstrdup(style) : NULL; /* currently unused */
1.18 markus 201: } else if (authctxt->valid) {
202: if (strcmp(user, authctxt->user) != 0 ||
203: strcmp(service, authctxt->service) != 0) {
204: log("input_userauth_request: missmatch: (%s,%s)!=(%s,%s)",
205: user, service, authctxt->user, authctxt->service);
206: authctxt->valid = 0;
1.1 markus 207: }
208: }
1.28 markus 209: /* reset state */
210: dispatch_set(SSH2_MSG_USERAUTH_INFO_RESPONSE, &protocol_error);
211: authctxt->postponed = 0;
1.47 markus 212: #ifdef BSD_AUTH
213: if (authctxt->as) {
214: auth_close(authctxt->as);
215: authctxt->as = NULL;
216: }
217: #endif
1.18 markus 218:
1.28 markus 219: /* try to authenticate user */
1.18 markus 220: m = authmethod_lookup(method);
221: if (m != NULL) {
222: debug2("input_userauth_request: try method %s", method);
223: authenticated = m->userauth(authctxt);
224: }
1.49 markus 225: userauth_finish(authctxt, authenticated, method);
226:
227: xfree(service);
228: xfree(user);
229: xfree(method);
230: }
231:
232: void
233: userauth_finish(Authctxt *authctxt, int authenticated, char *method)
234: {
1.28 markus 235: if (!authctxt->valid && authenticated)
236: fatal("INTERNAL ERROR: authenticated invalid user %s",
237: authctxt->user);
1.18 markus 238:
239: /* Special handling for root */
1.41 markus 240: if (authenticated && authctxt->pw->pw_uid == 0 &&
241: !auth_root_allowed(method))
1.3 markus 242: authenticated = 0;
243:
1.18 markus 244: /* Log before sending the reply */
1.28 markus 245: auth_log(authctxt, authenticated, method, " ssh2");
246:
247: if (!authctxt->postponed)
248: userauth_reply(authctxt, authenticated);
1.18 markus 249: }
250:
1.25 markus 251: void
252: userauth_banner(void)
253: {
254: struct stat st;
255: char *banner = NULL;
256: off_t len, n;
257: int fd;
258:
259: if (options.banner == NULL || (datafellows & SSH_BUG_BANNER))
260: return;
1.50 markus 261: if ((fd = open(options.banner, O_RDONLY)) < 0)
1.25 markus 262: return;
263: if (fstat(fd, &st) < 0)
264: goto done;
265: len = st.st_size;
266: banner = xmalloc(len + 1);
267: if ((n = read(fd, banner, len)) < 0)
268: goto done;
269: banner[n] = '\0';
270: packet_start(SSH2_MSG_USERAUTH_BANNER);
271: packet_put_cstring(banner);
272: packet_put_cstring(""); /* language, unused */
273: packet_send();
274: debug("userauth_banner: sent");
275: done:
276: if (banner)
277: xfree(banner);
278: close(fd);
279: return;
280: }
1.18 markus 281:
1.36 stevesk 282: void
1.18 markus 283: userauth_reply(Authctxt *authctxt, int authenticated)
284: {
1.24 markus 285: char *methods;
1.28 markus 286:
1.3 markus 287: /* XXX todo: check if multiple auth methods are needed */
1.39 markus 288: if (authenticated == 1) {
1.1 markus 289: /* turn off userauth */
290: dispatch_set(SSH2_MSG_USERAUTH_REQUEST, &protocol_error);
291: packet_start(SSH2_MSG_USERAUTH_SUCCESS);
292: packet_send();
293: packet_write_wait();
294: /* now we can break out */
1.18 markus 295: authctxt->success = 1;
1.28 markus 296: } else {
297: if (authctxt->failures++ > AUTH_FAIL_MAX)
1.36 stevesk 298: packet_disconnect(AUTH_FAIL_MSG, authctxt->user);
1.24 markus 299: methods = authmethods_get();
1.1 markus 300: packet_start(SSH2_MSG_USERAUTH_FAILURE);
1.18 markus 301: packet_put_cstring(methods);
302: packet_put_char(0); /* XXX partial success, unused */
1.1 markus 303: packet_send();
304: packet_write_wait();
1.18 markus 305: xfree(methods);
1.1 markus 306: }
307: }
308:
309: int
1.18 markus 310: userauth_none(Authctxt *authctxt)
1.1 markus 311: {
1.18 markus 312: /* disable method "none", only allowed one time */
313: Authmethod *m = authmethod_lookup("none");
314: if (m != NULL)
315: m->enabled = NULL;
1.1 markus 316: packet_done();
1.25 markus 317: userauth_banner();
1.47 markus 318: return authctxt->valid ? auth_password(authctxt, "") : 0;
1.1 markus 319: }
1.18 markus 320:
1.1 markus 321: int
1.18 markus 322: userauth_passwd(Authctxt *authctxt)
1.1 markus 323: {
324: char *password;
325: int authenticated = 0;
326: int change;
1.23 markus 327: u_int len;
1.1 markus 328: change = packet_get_char();
329: if (change)
330: log("password change not supported");
331: password = packet_get_string(&len);
332: packet_done();
1.18 markus 333: if (authctxt->valid &&
1.47 markus 334: auth_password(authctxt, password) == 1)
1.1 markus 335: authenticated = 1;
336: memset(password, 0, len);
337: xfree(password);
338: return authenticated;
339: }
1.18 markus 340:
341: int
342: userauth_kbdint(Authctxt *authctxt)
343: {
344: int authenticated = 0;
345: char *lang = NULL;
346: char *devs = NULL;
347:
348: lang = packet_get_string(NULL);
349: devs = packet_get_string(NULL);
350: packet_done();
351:
352: debug("keyboard-interactive language %s devs %s", lang, devs);
1.28 markus 353:
1.34 markus 354: if (options.challenge_reponse_authentication)
355: authenticated = auth2_challenge(authctxt, devs);
1.28 markus 356:
1.18 markus 357: xfree(lang);
358: xfree(devs);
359: return authenticated;
360: }
361:
1.1 markus 362: int
1.18 markus 363: userauth_pubkey(Authctxt *authctxt)
1.1 markus 364: {
365: Buffer b;
366: Key *key;
367: char *pkalg, *pkblob, *sig;
1.23 markus 368: u_int alen, blen, slen;
1.21 markus 369: int have_sig, pktype;
1.1 markus 370: int authenticated = 0;
371:
1.18 markus 372: if (!authctxt->valid) {
373: debug2("userauth_pubkey: disabled because of invalid user");
1.8 markus 374: return 0;
375: }
1.1 markus 376: have_sig = packet_get_char();
1.22 markus 377: if (datafellows & SSH_BUG_PKAUTH) {
378: debug2("userauth_pubkey: SSH_BUG_PKAUTH");
379: /* no explicit pkalg given */
380: pkblob = packet_get_string(&blen);
381: buffer_init(&b);
382: buffer_append(&b, pkblob, blen);
383: /* so we have to extract the pkalg from the pkblob */
384: pkalg = buffer_get_string(&b, &alen);
385: buffer_free(&b);
386: } else {
387: pkalg = packet_get_string(&alen);
388: pkblob = packet_get_string(&blen);
389: }
1.21 markus 390: pktype = key_type_from_name(pkalg);
391: if (pktype == KEY_UNSPEC) {
1.22 markus 392: /* this is perfectly legal */
393: log("userauth_pubkey: unsupported public key algorithm: %s", pkalg);
1.1 markus 394: xfree(pkalg);
1.22 markus 395: xfree(pkblob);
1.1 markus 396: return 0;
397: }
1.21 markus 398: key = key_from_blob(pkblob, blen);
1.2 markus 399: if (key != NULL) {
400: if (have_sig) {
401: sig = packet_get_string(&slen);
402: packet_done();
403: buffer_init(&b);
1.20 markus 404: if (datafellows & SSH_OLD_SESSIONID) {
405: buffer_append(&b, session_id2, session_id2_len);
406: } else {
1.11 markus 407: buffer_put_string(&b, session_id2, session_id2_len);
408: }
1.9 markus 409: /* reconstruct packet */
1.2 markus 410: buffer_put_char(&b, SSH2_MSG_USERAUTH_REQUEST);
1.18 markus 411: buffer_put_cstring(&b, authctxt->user);
1.9 markus 412: buffer_put_cstring(&b,
1.22 markus 413: datafellows & SSH_BUG_PKSERVICE ?
1.9 markus 414: "ssh-userauth" :
1.18 markus 415: authctxt->service);
1.22 markus 416: if (datafellows & SSH_BUG_PKAUTH) {
417: buffer_put_char(&b, have_sig);
418: } else {
419: buffer_put_cstring(&b, "publickey");
420: buffer_put_char(&b, have_sig);
421: buffer_put_cstring(&b, key_ssh_name(key));
422: }
1.9 markus 423: buffer_put_string(&b, pkblob, blen);
1.21 markus 424: #ifdef DEBUG_PK
1.2 markus 425: buffer_dump(&b);
1.1 markus 426: #endif
1.2 markus 427: /* test for correct signature */
1.21 markus 428: if (user_key_allowed(authctxt->pw, key) &&
429: key_verify(key, sig, slen, buffer_ptr(&b), buffer_len(&b)) == 1)
1.2 markus 430: authenticated = 1;
431: buffer_clear(&b);
432: xfree(sig);
433: } else {
1.18 markus 434: debug("test whether pkalg/pkblob are acceptable");
1.2 markus 435: packet_done();
1.18 markus 436:
1.2 markus 437: /* XXX fake reply and always send PK_OK ? */
1.6 markus 438: /*
439: * XXX this allows testing whether a user is allowed
440: * to login: if you happen to have a valid pubkey this
441: * message is sent. the message is NEVER sent at all
442: * if a user is not allowed to login. is this an
443: * issue? -markus
444: */
1.21 markus 445: if (user_key_allowed(authctxt->pw, key)) {
1.2 markus 446: packet_start(SSH2_MSG_USERAUTH_PK_OK);
447: packet_put_string(pkalg, alen);
448: packet_put_string(pkblob, blen);
449: packet_send();
450: packet_write_wait();
1.38 markus 451: authctxt->postponed = 1;
1.2 markus 452: }
1.1 markus 453: }
1.17 markus 454: if (authenticated != 1)
455: auth_clear_options();
1.2 markus 456: key_free(key);
1.1 markus 457: }
1.21 markus 458: debug2("userauth_pubkey: authenticated %d pkalg %s", authenticated, pkalg);
1.1 markus 459: xfree(pkalg);
460: xfree(pkblob);
461: return authenticated;
462: }
463:
1.18 markus 464: /* get current user */
1.1 markus 465:
466: struct passwd*
467: auth_get_user(void)
468: {
1.18 markus 469: return (x_authctxt != NULL && x_authctxt->valid) ? x_authctxt->pw : NULL;
1.1 markus 470: }
471:
1.18 markus 472: #define DELIM ","
473:
474: char *
475: authmethods_get(void)
1.1 markus 476: {
1.18 markus 477: Authmethod *method = NULL;
1.23 markus 478: u_int size = 0;
1.18 markus 479: char *list;
1.1 markus 480:
1.18 markus 481: for (method = authmethods; method->name != NULL; method++) {
482: if (strcmp(method->name, "none") == 0)
483: continue;
484: if (method->enabled != NULL && *(method->enabled) != 0) {
485: if (size != 0)
486: size += strlen(DELIM);
487: size += strlen(method->name);
1.1 markus 488: }
1.18 markus 489: }
490: size++; /* trailing '\0' */
491: list = xmalloc(size);
492: list[0] = '\0';
493:
494: for (method = authmethods; method->name != NULL; method++) {
495: if (strcmp(method->name, "none") == 0)
496: continue;
497: if (method->enabled != NULL && *(method->enabled) != 0) {
498: if (list[0] != '\0')
499: strlcat(list, DELIM, size);
500: strlcat(list, method->name, size);
1.1 markus 501: }
502: }
1.18 markus 503: return list;
504: }
505:
506: Authmethod *
507: authmethod_lookup(const char *name)
508: {
509: Authmethod *method = NULL;
510: if (name != NULL)
511: for (method = authmethods; method->name != NULL; method++)
512: if (method->enabled != NULL &&
513: *(method->enabled) != 0 &&
514: strcmp(name, method->name) == 0)
515: return method;
516: debug2("Unrecognized authentication method name: %s", name ? name : "NULL");
517: return NULL;
1.1 markus 518: }
519:
520: /* return 1 if user allows given key */
521: int
1.21 markus 522: user_key_allowed(struct passwd *pw, Key *key)
1.1 markus 523: {
1.31 markus 524: char line[8192], file[MAXPATHLEN];
1.1 markus 525: int found_key = 0;
526: FILE *f;
1.23 markus 527: u_long linenum = 0;
1.1 markus 528: struct stat st;
529: Key *found;
530:
1.18 markus 531: if (pw == NULL)
532: return 0;
533:
1.1 markus 534: /* Temporarily use the user's uid. */
1.51 ! markus 535: temporarily_use_uid(pw);
1.1 markus 536:
537: /* The authorized keys. */
538: snprintf(file, sizeof file, "%.500s/%.100s", pw->pw_dir,
1.29 markus 539: _PATH_SSH_USER_PERMITTED_KEYS2);
1.1 markus 540:
541: /* Fail quietly if file does not exist */
542: if (stat(file, &st) < 0) {
543: /* Restore the privileged uid. */
544: restore_uid();
545: return 0;
546: }
547: /* Open the file containing the authorized keys. */
548: f = fopen(file, "r");
549: if (!f) {
550: /* Restore the privileged uid. */
551: restore_uid();
552: return 0;
553: }
554: if (options.strict_modes) {
555: int fail = 0;
556: char buf[1024];
557: /* Check open file in order to avoid open/stat races */
558: if (fstat(fileno(f), &st) < 0 ||
559: (st.st_uid != 0 && st.st_uid != pw->pw_uid) ||
560: (st.st_mode & 022) != 0) {
1.16 markus 561: snprintf(buf, sizeof buf,
562: "%s authentication refused for %.100s: "
563: "bad ownership or modes for '%s'.",
564: key_type(key), pw->pw_name, file);
1.1 markus 565: fail = 1;
566: } else {
1.29 markus 567: /* Check path to _PATH_SSH_USER_PERMITTED_KEYS */
1.1 markus 568: int i;
569: static const char *check[] = {
1.29 markus 570: "", _PATH_SSH_USER_DIR, NULL
1.1 markus 571: };
572: for (i = 0; check[i]; i++) {
573: snprintf(line, sizeof line, "%.500s/%.100s",
574: pw->pw_dir, check[i]);
575: if (stat(line, &st) < 0 ||
576: (st.st_uid != 0 && st.st_uid != pw->pw_uid) ||
577: (st.st_mode & 022) != 0) {
578: snprintf(buf, sizeof buf,
1.16 markus 579: "%s authentication refused for %.100s: "
1.1 markus 580: "bad ownership or modes for '%s'.",
1.16 markus 581: key_type(key), pw->pw_name, line);
1.1 markus 582: fail = 1;
583: break;
584: }
585: }
586: }
587: if (fail) {
588: fclose(f);
1.44 deraadt 589: log("%s", buf);
1.1 markus 590: restore_uid();
591: return 0;
592: }
593: }
594: found_key = 0;
1.16 markus 595: found = key_new(key->type);
1.1 markus 596:
597: while (fgets(line, sizeof(line), f)) {
1.10 markus 598: char *cp, *options = NULL;
1.1 markus 599: linenum++;
600: /* Skip leading whitespace, empty and comment lines. */
601: for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
602: ;
603: if (!*cp || *cp == '\n' || *cp == '#')
604: continue;
1.10 markus 605:
1.21 markus 606: if (key_read(found, &cp) == -1) {
1.10 markus 607: /* no key? check if there are options for this key */
608: int quoted = 0;
1.21 markus 609: debug2("user_key_allowed: check options: '%s'", cp);
1.10 markus 610: options = cp;
611: for (; *cp && (quoted || (*cp != ' ' && *cp != '\t')); cp++) {
612: if (*cp == '\\' && cp[1] == '"')
613: cp++; /* Skip both */
614: else if (*cp == '"')
615: quoted = !quoted;
616: }
617: /* Skip remaining whitespace. */
618: for (; *cp == ' ' || *cp == '\t'; cp++)
619: ;
1.21 markus 620: if (key_read(found, &cp) == -1) {
621: debug2("user_key_allowed: advance: '%s'", cp);
1.10 markus 622: /* still no key? advance to next line*/
623: continue;
624: }
625: }
626: if (key_equal(found, key) &&
1.30 markus 627: auth_parse_options(pw, options, file, linenum) == 1) {
1.1 markus 628: found_key = 1;
629: debug("matching key found: file %s, line %ld",
630: file, linenum);
631: break;
632: }
633: }
634: restore_uid();
635: fclose(f);
636: key_free(found);
1.46 markus 637: if (!found_key)
638: debug2("key not found");
1.1 markus 639: return found_key;
640: }
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