2 * $Id: auth.c,v 1.71 2009-11-30 15:30:47 franklahm Exp $
4 * Copyright (c) 1990,1993 Regents of The University of Michigan.
5 * All Rights Reserved. See COPYRIGHT.
10 #endif /* HAVE_CONFIG_H */
17 #endif /* HAVE_UNISTD_H */
18 #include <sys/types.h>
19 #include <sys/param.h>
21 #include <netatalk/endian.h>
22 #include <atalk/afp.h>
23 #include <atalk/compat.h>
24 #include <atalk/util.h>
31 #include <atalk/logger.h>
32 #include <atalk/server_ipc.h>
33 #include <atalk/uuid.h>
37 #include <arpa/inet.h>
41 extern void afp_get_cmdline( int *ac, char ***av );
51 #ifdef HAVE_NFSv4_ACLS
56 static int afp_version_index;
60 #if defined( sun ) && !defined( __svr4__ ) || defined( ultrix )
63 #define GROUPS_SIZE sizeof(int)
65 #else /* sun __svr4__ ultrix */
68 #define GROUPS_SIZE sizeof(gid_t)
69 #endif /* sun ultrix */
74 * These numbers are scattered throughout the code.
76 static struct afp_versions afp_versions[] = {
78 { "AFPVersion 1.1", 11 },
79 { "AFPVersion 2.0", 20 },
80 { "AFPVersion 2.1", 21 },
90 static struct uam_mod uam_modules = {NULL, NULL, &uam_modules, &uam_modules};
91 static struct uam_obj uam_login = {"", "", 0, {{NULL, NULL, NULL, NULL }}, &uam_login,
93 static struct uam_obj uam_changepw = {"", "", 0, {{NULL, NULL, NULL, NULL}}, &uam_changepw,
96 static struct uam_obj *afp_uam = NULL;
99 void status_versions( char *data, const ASP asp, const DSI *dsi)
103 int len, num, i, count = 0;
105 memcpy(&status, start + AFPSTATUS_VERSOFF, sizeof(status));
106 num = sizeof( afp_versions ) / sizeof( afp_versions[ 0 ] );
108 for ( i = 0; i < num; i++ ) {
110 if ( !asp && (afp_versions[ i ].av_number <= 21)) continue;
111 #endif /* ! NO_DDP */
112 if ( !dsi && (afp_versions[ i ].av_number >= 22)) continue;
115 data += ntohs( status );
118 for ( i = 0; i < num; i++ ) {
120 if ( !asp && (afp_versions[ i ].av_number <= 21)) continue;
121 #endif /* ! NO_DDP */
122 if ( !dsi && (afp_versions[ i ].av_number >= 22)) continue;
123 len = strlen( afp_versions[ i ].av_name );
125 memcpy( data, afp_versions[ i ].av_name , len );
128 status = htons( data - start );
129 memcpy(start + AFPSTATUS_UAMSOFF, &status, sizeof(status));
132 void status_uams(char *data, const char *authlist)
136 struct uam_obj *uams;
139 memcpy(&status, start + AFPSTATUS_UAMSOFF, sizeof(status));
141 while ((uams = uams->uam_prev) != &uam_login) {
142 if (strstr(authlist, uams->uam_path))
146 data += ntohs( status );
148 while ((uams = uams->uam_prev) != &uam_login) {
149 if (strstr(authlist, uams->uam_path)) {
150 LOG(log_info, logtype_afpd, "uam: \"%s\" available", uams->uam_name);
151 len = strlen( uams->uam_name);
153 memcpy( data, uams->uam_name, len );
159 status = htons(data - start);
160 memcpy(start + AFPSTATUS_ICONOFF, &status, sizeof(status));
163 /* handle errors by closing the connection. this is only needed
164 * by the afp_* functions. */
165 static int send_reply(const AFPObj *obj, const int err)
167 if ((err == AFP_OK) || (err == AFPERR_AUTHCONT))
170 obj->reply(obj->handle, err);
176 static int afp_errpwdexpired(AFPObj *obj _U_, char *ibuf _U_, size_t ibuflen _U_,
177 char *rbuf _U_, size_t *rbuflen)
180 return AFPERR_PWDEXPR;
183 static int afp_null_nolog(AFPObj *obj _U_, char *ibuf _U_, size_t ibuflen _U_,
184 char *rbuf _U_, size_t *rbuflen)
187 return( AFPERR_NOOP );
190 static int set_auth_switch(int expired)
196 * BF: expired password handling
197 * to allow the user to change his/her password we have to allow login
198 * but every following call except for FPChangePassword will be thrown
199 * away with an AFPERR_PWDEXPR error. (thanks to Leland Wallace from Apple
200 * for clarifying this)
203 for (i=0; i<=0xff; i++) {
204 uam_afpserver_action(i, UAM_AFPSERVER_PREAUTH, afp_errpwdexpired, NULL);
206 uam_afpserver_action(AFP_LOGOUT, UAM_AFPSERVER_PREAUTH, afp_logout, NULL);
207 uam_afpserver_action(AFP_CHANGEPW, UAM_AFPSERVER_PREAUTH, afp_changepw, NULL);
210 afp_switch = postauth_switch;
211 switch (afp_version) {
213 #ifdef HAVE_NFSv4_ACLS
214 uam_afpserver_action(AFP_GETACL, UAM_AFPSERVER_POSTAUTH, afp_getacl, NULL);
215 uam_afpserver_action(AFP_SETACL, UAM_AFPSERVER_POSTAUTH, afp_setacl, NULL);
216 uam_afpserver_action(AFP_ACCESS, UAM_AFPSERVER_POSTAUTH, afp_access, NULL);
218 uam_afpserver_action(AFP_GETEXTATTR, UAM_AFPSERVER_POSTAUTH, afp_getextattr, NULL);
219 uam_afpserver_action(AFP_SETEXTATTR, UAM_AFPSERVER_POSTAUTH, afp_setextattr, NULL);
220 uam_afpserver_action(AFP_REMOVEATTR, UAM_AFPSERVER_POSTAUTH, afp_remextattr, NULL);
221 uam_afpserver_action(AFP_LISTEXTATTR, UAM_AFPSERVER_POSTAUTH, afp_listextattr, NULL);
223 uam_afpserver_action(AFP_SYNCDIR, UAM_AFPSERVER_POSTAUTH, afp_syncdir, NULL);
224 uam_afpserver_action(AFP_SYNCFORK, UAM_AFPSERVER_POSTAUTH, afp_syncfork, NULL);
225 uam_afpserver_action(AFP_SPOTLIGHT_PRIVATE, UAM_AFPSERVER_POSTAUTH, afp_null_nolog, NULL);
226 uam_afpserver_action(AFP_ENUMERATE_EXT2, UAM_AFPSERVER_POSTAUTH, afp_enumerate_ext2, NULL);
228 uam_afpserver_action(AFP_ENUMERATE_EXT, UAM_AFPSERVER_POSTAUTH, afp_enumerate_ext, NULL);
229 uam_afpserver_action(AFP_BYTELOCK_EXT, UAM_AFPSERVER_POSTAUTH, afp_bytelock_ext, NULL);
230 /* catsearch_ext uses the same packet as catsearch FIXME double check this, it wasn't true for enue
232 uam_afpserver_action(AFP_CATSEARCH_EXT, UAM_AFPSERVER_POSTAUTH, afp_catsearch_ext, NULL);
233 uam_afpserver_action(AFP_GETSESSTOKEN, UAM_AFPSERVER_POSTAUTH, afp_getsession, NULL);
234 uam_afpserver_action(AFP_READ_EXT, UAM_AFPSERVER_POSTAUTH, afp_read_ext, NULL);
235 uam_afpserver_action(AFP_WRITE_EXT, UAM_AFPSERVER_POSTAUTH, afp_write_ext, NULL);
236 uam_afpserver_action(AFP_DISCTOLDSESS, UAM_AFPSERVER_POSTAUTH, afp_disconnect, NULL);
240 * If first connection to a server is done in classic AFP2.2 version is used
241 * but OSX uses AFP3.x FPzzz command !
243 uam_afpserver_action(AFP_ZZZ, UAM_AFPSERVER_POSTAUTH, afp_zzz, NULL);
251 static int login(AFPObj *obj, struct passwd *pwd, void (*logout)(void), int expired)
255 #endif /* ADMIN_GRP */
258 set_processname("afpd");
261 if ( pwd->pw_uid == 0 ) { /* don't allow root login */
262 LOG(log_error, logtype_afpd, "login: root login denied!" );
263 return AFPERR_NOTAUTH;
266 LOG(log_info, logtype_afpd, "login %s (uid %d, gid %d) %s", pwd->pw_name,
267 pwd->pw_uid, pwd->pw_gid , afp_versions[afp_version_index].av_name);
270 if (obj->proto == AFPPROTO_ASP) {
271 ASP asp = obj->handle;
272 int addr_net = ntohs( asp->asp_sat.sat_addr.s_net );
273 int addr_node = asp->asp_sat.sat_addr.s_node;
275 if (obj->options.authprintdir) {
276 if(addr_net && addr_node) { /* Do we have a valid Appletalk address? */
279 int mypid = getpid();
280 struct stat stat_buf;
282 sprintf(nodename, "%s/net%d.%dnode%d", obj->options.authprintdir,
283 addr_net / 256, addr_net % 256, addr_node);
284 LOG(log_info, logtype_afpd, "registering %s (uid %d) on %u.%u as %s",
285 pwd->pw_name, pwd->pw_uid, addr_net, addr_node, nodename);
287 if (stat(nodename, &stat_buf) == 0) { /* file exists */
288 if (S_ISREG(stat_buf.st_mode)) { /* normal file */
290 fp = fopen(nodename, "w");
291 fprintf(fp, "%s:%d\n", pwd->pw_name, mypid);
293 chown( nodename, pwd->pw_uid, -1 );
294 } else { /* somebody is messing with us */
295 LOG(log_error, logtype_afpd, "print authfile %s is not a normal file, it will not be modified", nodename );
297 } else { /* file 'nodename' does not exist */
298 fp = fopen(nodename, "w");
299 fprintf(fp, "%s:%d\n", pwd->pw_name, mypid);
301 chown( nodename, pwd->pw_uid, -1 );
303 } /* if (addr_net && addr_node ) */
304 } /* if (options->authprintdir) */
305 } /* if (obj->proto == AFPPROTO_ASP) */
308 if (initgroups( pwd->pw_name, pwd->pw_gid ) < 0) {
310 LOG(log_info, logtype_afpd, "running with uid %d", geteuid());
311 #else /* RUN_AS_USER */
312 LOG(log_error, logtype_afpd, "login: %s", strerror(errno));
313 return AFPERR_BADUAM;
314 #endif /* RUN_AS_USER */
318 /* Basically if the user is in the admin group, we stay root */
320 if (( ngroups = getgroups( 0, NULL )) < 0 ) {
321 LOG(log_error, logtype_afpd, "login: %s getgroups: %s", pwd->pw_name, strerror(errno) );
322 return AFPERR_BADUAM;
325 if ( NULL == (groups = calloc(ngroups, GROUPS_SIZE)) ) {
326 LOG(log_error, logtype_afpd, "login: %s calloc: %d", ngroups);
327 return AFPERR_BADUAM;
330 if (( ngroups = getgroups( ngroups, groups )) < 0 ) {
331 LOG(log_error, logtype_afpd, "login: %s getgroups: %s", pwd->pw_name, strerror(errno) );
332 return AFPERR_BADUAM;
336 LOG(log_debug, logtype_afpd, "obj->options.admingid == %d", obj->options.admingid);
338 if (obj->options.admingid != 0) {
340 for (i = 0; i < ngroups; i++) {
341 if (groups[i] == obj->options.admingid) admin = 1;
346 LOG(log_info, logtype_afpd, "admin login -- %s", pwd->pw_name );
349 #endif /* ADMIN_GRP */
352 struct DSI *dsi = obj->handle;
359 afp_get_cmdline( &argc, &argv );
361 hp = gethostbyaddr( (char *) &dsi->client.sin_addr,
362 sizeof( struct in_addr ),
363 dsi->client.sin_family );
366 clientname = hp->h_name;
368 clientname = inet_ntoa( dsi->client.sin_addr );
370 sprintf( hostname, "%s@%s", pwd->pw_name, clientname );
372 if( sia_become_user( NULL, argc, argv, hostname, pwd->pw_name,
373 NULL, FALSE, NULL, NULL,
374 SIA_BEU_REALLOGIN ) != SIASUCCESS )
375 return AFPERR_BADUAM;
377 LOG(log_info, logtype_afpd, "session from %s (%s)", hostname,
378 inet_ntoa( dsi->client.sin_addr ) );
380 if (setegid( pwd->pw_gid ) < 0 || seteuid( pwd->pw_uid ) < 0) {
381 LOG(log_error, logtype_afpd, "login: %s %s", pwd->pw_name, strerror(errno) );
382 return AFPERR_BADUAM;
386 if (setegid( pwd->pw_gid ) < 0 || seteuid( pwd->pw_uid ) < 0) {
387 LOG(log_error, logtype_afpd, "login: %s %s", pwd->pw_name, strerror(errno) );
388 return AFPERR_BADUAM;
393 #define GROUPSTR_BUFSIZE 1024
394 char groupsstr[GROUPSTR_BUFSIZE];
396 int j = GROUPSTR_BUFSIZE;
398 int n = snprintf(groupsstr, GROUPSTR_BUFSIZE, "%u", groups[0]);
402 for (int i = 1; i < ngroups; i++) {
403 n = snprintf(s, j, ", %u", groups[i]);
406 LOG(log_debug, logtype_afpd, "login: group string buffer overflow");
412 LOG(log_debug, logtype_afpd, "login: %u supplementary groups: %s", ngroups, groupsstr);
415 /* There's probably a better way to do this, but for now, we just play root */
420 #endif /* ADMIN_GRP */
423 set_auth_switch(expired);
424 /* save our euid, we need it for preexec_close */
425 obj->uid = geteuid();
426 obj->logout = logout;
430 save_uidgid ( &obj->uidgid );
436 /* ---------------------- */
437 int afp_zzz ( /* Function 122 */
439 char *ibuf _U_, size_t ibuflen _U_,
440 char *rbuf, size_t *rbuflen)
446 retdata = obj->options.sleep /120;
450 *rbuflen = sizeof(retdata);
451 retdata = htonl(retdata);
452 memcpy(rbuf, &retdata, sizeof(retdata));
455 rbuf += sizeof(retdata);
459 /* ---------------------- */
460 static int create_session_token(AFPObj *obj)
464 /* use 8 bytes for token as OSX, don't know if it helps */
465 if ( sizeof(pid_t) > SESSIONTOKEN_LEN) {
466 LOG(log_error, logtype_afpd, "sizeof(pid_t) > %u", SESSIONTOKEN_LEN );
470 if ( NULL == (obj->sinfo.sessiontoken = malloc(SESSIONTOKEN_LEN)) )
473 memset(obj->sinfo.sessiontoken, 0, SESSIONTOKEN_LEN);
474 obj->sinfo.sessiontoken_len = SESSIONTOKEN_LEN;
476 memcpy(obj->sinfo.sessiontoken, &pid, sizeof(pid_t));
481 static int create_session_key(AFPObj *obj)
483 /* create session key */
484 if (obj->sinfo.sessionkey == NULL) {
485 if (NULL == (obj->sinfo.sessionkey = malloc(SESSIONKEY_LEN)) )
487 uam_random_string(obj, obj->sinfo.sessionkey, SESSIONKEY_LEN);
488 obj->sinfo.sessionkey_len = SESSIONKEY_LEN;
494 /* ---------------------- */
497 char *ibuf, size_t ibuflen,
498 char *rbuf, size_t *rbuflen)
510 if (ibuflen < 2 + sizeof(type)) {
517 memcpy(&type, ibuf, sizeof(type));
519 ibuf += sizeof(type);
520 ibuflen -= sizeof(type);
522 if ( obj->sinfo.sessiontoken == NULL ) {
523 if ( create_session_token( obj ) )
531 case 0: /* old version ?*/
532 tklen = obj->sinfo.sessiontoken_len;
533 token = obj->sinfo.sessiontoken;
535 case 1: /* disconnect */
536 case 2: /* reconnect update id */
537 if (ibuflen >= sizeof(idlen)) {
538 memcpy(&idlen, ibuf, sizeof(idlen));
539 idlen = ntohl(idlen);
540 ibuf += sizeof(idlen);
541 ibuflen -= sizeof(idlen);
542 if (ibuflen < idlen) {
545 /* memcpy (id, ibuf, idlen) */
546 tklen = obj->sinfo.sessiontoken_len;
547 token = obj->sinfo.sessiontoken;
554 memcpy( &idlen, ibuf, sizeof(idlen));
555 idlen = ntohl(idlen);
556 ibuf += sizeof(idlen);
557 ibuflen -= sizeof(idlen);
558 ibuf += sizeof(boottime);
559 ibuflen -= sizeof(boottime);
560 if (ibuflen < idlen || idlen > (90-10)) {
563 server_ipc_write(IPC_GETSESSION, idlen+8, p );
564 tklen = obj->sinfo.sessiontoken_len;
565 token = obj->sinfo.sessiontoken;
568 case 8: /* Panther Kerberos Token */
569 tklen = obj->sinfo.cryptedkey_len;
570 token = obj->sinfo.cryptedkey;
582 memcpy(rbuf, &tp, sizeof(tklen));
583 rbuf += sizeof(tklen);
584 *rbuflen += sizeof(tklen);
586 memcpy(rbuf, token, tklen);
592 /* ---------------------- */
593 int afp_disconnect(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
605 /* check for guest user */
606 if ( 0 == (strcasecmp(obj->username, obj->options.guest)) ) {
611 memcpy(&type, ibuf, sizeof(type));
613 ibuf += sizeof(type);
615 memcpy(&tklen, ibuf, sizeof(tklen));
616 tklen = ntohl(tklen);
617 ibuf += sizeof(tklen);
619 if ( sizeof(pid_t) > SESSIONTOKEN_LEN) {
620 LOG(log_error, logtype_afpd, "sizeof(pid_t) > %u", SESSIONTOKEN_LEN );
623 if (tklen != SESSIONTOKEN_LEN) {
626 tklen = sizeof(pid_t);
627 memcpy(&token, ibuf, tklen);
629 /* our stuff is pid + zero pad */
631 for (i = tklen; i < SESSIONTOKEN_LEN; i++, ibuf++) {
637 /* killed old session, not easy */
638 server_ipc_write(IPC_KILLTOKEN, tklen, &token);
641 return AFPERR_SESSCLOS; /* was AFP_OK */
644 /* ---------------------- */
645 static int get_version(AFPObj *obj, char *ibuf, size_t ibuflen, size_t len)
649 if (!len || len > ibuflen)
650 return AFPERR_BADVERS;
652 num = sizeof( afp_versions ) / sizeof( afp_versions[ 0 ]);
653 for ( i = 0; i < num; i++ ) {
654 if ( strncmp( ibuf, afp_versions[ i ].av_name , len ) == 0 ) {
655 afp_version = afp_versions[ i ].av_number;
656 afp_version_index = i;
660 if ( i == num ) /* An inappropo version */
661 return AFPERR_BADVERS ;
663 if (afp_version >= 30 && obj->proto != AFPPROTO_DSI)
664 return AFPERR_BADVERS ;
667 if (afp_version >= 30 && sizeof(off_t) != 8) {
668 LOG(log_error, logtype_afpd, "get_version: no LARGE_FILE support recompile!" );
669 return AFPERR_BADVERS ;
675 /* ---------------------- */
676 int afp_login(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
678 struct passwd *pwd = NULL;
685 return send_reply(obj, AFPERR_SHUTDOWN );
688 return send_reply(obj, AFPERR_BADVERS );
691 len = (unsigned char) *ibuf++;
694 i = get_version(obj, ibuf, ibuflen, len);
696 return send_reply(obj, i );
699 return send_reply(obj, AFPERR_BADUAM);
704 len = (unsigned char) *ibuf++;
707 if (!len || len > ibuflen)
708 return send_reply(obj, AFPERR_BADUAM);
710 if (NULL == (afp_uam = auth_uamfind(UAM_SERVER_LOGIN, ibuf, len)) )
711 return send_reply(obj, AFPERR_BADUAM);
715 if (AFP_OK != (i = create_session_key(obj)) )
716 return send_reply(obj, i);
718 i = afp_uam->u.uam_login.login(obj, &pwd, ibuf, ibuflen, rbuf, rbuflen);
720 if (!pwd || ( i != AFP_OK && i != AFPERR_PWDEXPR))
721 return send_reply(obj, i);
723 return send_reply(obj, login(obj, pwd, afp_uam->u.uam_login.logout, ((i==AFPERR_PWDEXPR)?1:0)));
726 /* ---------------------- */
727 int afp_login_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
729 struct passwd *pwd = NULL;
739 return send_reply(obj, AFPERR_SHUTDOWN );
742 return send_reply(obj, AFPERR_BADVERS );
748 len = (unsigned char) *ibuf;
752 i = get_version(obj, ibuf, ibuflen, len);
754 return send_reply(obj, i );
757 return send_reply(obj, AFPERR_BADUAM);
762 len = (unsigned char) *ibuf;
766 if (!len || len > ibuflen)
767 return send_reply(obj, AFPERR_BADUAM);
769 if ((afp_uam = auth_uamfind(UAM_SERVER_LOGIN, ibuf, len)) == NULL)
770 return send_reply(obj, AFPERR_BADUAM);
774 if (!afp_uam->u.uam_login.login_ext) {
775 LOG(log_error, logtype_afpd, "login_ext: uam %s not AFP 3 ready!", afp_uam->uam_name );
776 return send_reply(obj, AFPERR_BADUAM);
779 if (ibuflen <= 1 +sizeof(len16))
780 return send_reply(obj, AFPERR_PARAM);
786 return send_reply(obj, AFPERR_PARAM);
788 memcpy(&len16, ibuf, sizeof(len16));
789 ibuf += sizeof(len16);
790 ibuflen -= sizeof(len16);
793 return send_reply(obj, AFPERR_PARAM);
797 /* directory service name */
799 return send_reply(obj, AFPERR_PARAM);
808 return send_reply(obj, AFPERR_PARAM);
809 len = (unsigned char) *ibuf;
814 /* With "No User Authen" it is equal */
815 if (ibuflen < sizeof(len16))
816 return send_reply(obj, AFPERR_PARAM);
817 memcpy(&len16, ibuf, sizeof(len16));
818 ibuf += sizeof(len16);
819 ibuflen -= sizeof(len16);
823 return send_reply(obj, AFPERR_PARAM);
827 LOG(log_error, logtype_afpd, "login_ext: directory service path not null!" );
828 return send_reply(obj, AFPERR_PARAM);
835 if (ibuflen && ((unsigned long) ibuf & 1)) { /* pad character */
840 if (AFP_OK != (i = create_session_key(obj)) ) {
841 return send_reply(obj, i);
844 /* FIXME user name are in UTF8 */
845 i = afp_uam->u.uam_login.login_ext(obj, username, &pwd, ibuf, ibuflen, rbuf, rbuflen);
847 if (!pwd || ( i != AFP_OK && i != AFPERR_PWDEXPR))
848 return send_reply(obj, i);
850 return send_reply(obj, login(obj, pwd, afp_uam->u.uam_login.logout, ((i==AFPERR_PWDEXPR)?1:0)));
853 /* ---------------------- */
854 int afp_logincont(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
856 struct passwd *pwd = NULL;
859 if ( afp_uam == NULL || afp_uam->u.uam_login.logincont == NULL || ibuflen < 2 ) {
861 return send_reply(obj, AFPERR_NOTAUTH );
864 ibuf += 2; ibuflen -= 2;
865 err = afp_uam->u.uam_login.logincont(obj, &pwd, ibuf, ibuflen,
867 if (!pwd || ( err != AFP_OK && err != AFPERR_PWDEXPR))
868 return send_reply(obj, err);
870 return send_reply(obj, login(obj, pwd, afp_uam->u.uam_login.logout, ((err==AFPERR_PWDEXPR)?1:0)));
874 int afp_logout(AFPObj *obj, char *ibuf _U_, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen _U_)
876 LOG(log_info, logtype_afpd, "logout %s", obj->username);
884 /* change password --
885 * NOTE: an FPLogin must already have completed successfully for this
886 * to work. this also does a little pre-processing before it hands
889 int afp_changepw(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
891 char username[MACFILELEN + 1], *start = ibuf;
900 /* check if password change is allowed, OS-X ignores the flag.
901 * we shouldn't trust the client on this anyway.
902 * not sure about the "right" error code, NOOP for now */
903 if (!(obj->options.passwdbits & PASSWD_SET))
906 /* make sure we can deal w/ this uam */
907 len = (unsigned char) *ibuf++;
908 if ((uam = auth_uamfind(UAM_SERVER_CHANGEPW, ibuf, len)) == NULL)
909 return AFPERR_BADUAM;
912 if ((len + 1) & 1) /* pad byte */
915 if ( afp_version < 30) {
916 len = (unsigned char) *ibuf++;
917 if ( len > sizeof(username) - 1) {
920 memcpy(username, ibuf, len);
921 username[ len ] = '\0';
923 if ((len + 1) & 1) /* pad byte */
926 /* AFP > 3.0 doesn't pass the username, APF 3.1 specs page 124 */
927 if ( ibuf[0] != '\0' || ibuf[1] != '\0')
930 len = MIN(sizeof(username), strlen(obj->username));
931 memcpy(username, obj->username, len);
932 username[ len ] = '\0';
936 LOG(log_info, logtype_afpd, "changing password for <%s>", username);
938 if (( pwd = uam_getname( obj, username, sizeof(username))) == NULL )
941 /* send it off to the uam. we really don't use ibuflen right now. */
942 if (ibuflen < (size_t)(ibuf - start))
945 ibuflen -= (ibuf - start);
946 ret = uam->u.uam_changepw(obj, username, pwd, ibuf, ibuflen,
948 LOG(log_info, logtype_afpd, "password change %s.",
949 (ret == AFPERR_AUTHCONT) ? "continued" :
950 (ret ? "failed" : "succeeded"));
959 int afp_getuserinfo(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
965 LOG(log_debug, logtype_afpd, "begin afp_getuserinfo:");
970 ibuf += sizeof(id); /* userid is not used in AFP 2.0 */
971 memcpy(&bitmap, ibuf, sizeof(bitmap));
972 bitmap = ntohs(bitmap);
974 /* deal with error cases. we don't have to worry about
975 * AFPERR_ACCESS or AFPERR_NOITEM as geteuid and getegid always
979 if ((bitmap & USERIBIT_ALL) != bitmap)
980 return AFPERR_BITMAP;
982 /* copy the bitmap back to reply buffer */
983 memcpy(rbuf, ibuf, sizeof(bitmap));
984 rbuf += sizeof(bitmap);
985 *rbuflen = sizeof(bitmap);
987 /* copy the user/group info */
988 if (bitmap & USERIBIT_USER) {
989 id = htonl(geteuid());
990 memcpy(rbuf, &id, sizeof(id));
992 *rbuflen += sizeof(id);
995 if (bitmap & USERIBIT_GROUP) {
996 id = htonl(getegid());
997 memcpy(rbuf, &id, sizeof(id));
999 *rbuflen += sizeof(id);
1002 #ifdef HAVE_NFSv4_ACLS
1003 if (bitmap & USERIBIT_UUID) {
1008 if ( ! (obj->options.flags & OPTION_UUID))
1009 return AFPERR_BITMAP;
1010 LOG(log_debug, logtype_afpd, "afp_getuserinfo: get UUID for \'%s\'", obj->username);
1011 ret = getuuidfromname( obj->username, UUID_USER, uuid);
1013 LOG(log_info, logtype_afpd, "afp_getuserinfo: error getting UUID !");
1014 return AFPERR_NOITEM;
1016 if (0 == (uuid_bin2string( uuid, &uuidstring))) {
1017 LOG(log_debug, logtype_afpd, "afp_getuserinfo: got UUID: %s", uuidstring);
1020 memcpy(rbuf, uuid, UUID_BINSIZE);
1021 rbuf += UUID_BINSIZE;
1022 *rbuflen += UUID_BINSIZE;
1026 LOG(log_debug, logtype_afpd, "END afp_getuserinfo:");
1030 #define UAM_LIST(type) (((type) == UAM_SERVER_LOGIN || (type) == UAM_SERVER_LOGIN_EXT) ? &uam_login : \
1031 (((type) == UAM_SERVER_CHANGEPW) ? \
1032 &uam_changepw : NULL))
1034 /* just do a linked list search. this could be sped up with a hashed
1035 * list, but i doubt anyone's going to have enough uams to matter. */
1036 struct uam_obj *auth_uamfind(const int type, const char *name,
1039 struct uam_obj *prev, *start;
1041 if (!name || !(start = UAM_LIST(type)))
1045 while ((prev = prev->uam_prev) != start)
1046 if (strndiacasecmp(prev->uam_name, name, len) == 0)
1052 int auth_register(const int type, struct uam_obj *uam)
1054 struct uam_obj *start;
1056 if (!uam || !uam->uam_name || (*uam->uam_name == '\0'))
1059 if (!(start = UAM_LIST(type)))
1060 return 1; /* we don't know what to do with it, caller must free it */
1062 uam_attach(start, uam);
1066 /* load all of the modules */
1067 int auth_load(const char *path, const char *list)
1069 char name[MAXPATHLEN + 1], buf[MAXPATHLEN + 1], *p;
1070 struct uam_mod *mod;
1074 if (!path || !*path || !list || (len = strlen(path)) > sizeof(name) - 2)
1077 strlcpy(buf, list, sizeof(buf));
1078 if ((p = strtok(buf, ",")) == NULL)
1082 if (name[len - 1] != '/') {
1088 strlcpy(name + len, p, sizeof(name) - len);
1089 LOG(log_debug, logtype_afpd, "uam: loading (%s)", name);
1091 if ((stat(name, &st) == 0) && (mod = uam_load(name, p))) {
1093 if (stat(name, &st) == 0) {
1094 if ((mod = uam_load(name, p))) {
1095 uam_attach(&uam_modules, mod);
1096 LOG(log_info, logtype_afpd, "uam: %s loaded", p);
1098 LOG(log_info, logtype_afpd, "uam: %s load failure",p);
1101 LOG(log_info, logtype_afpd, "uam: uam not found (status=%d)", stat(name, &st));
1103 p = strtok(NULL, ",");
1109 /* get rid of all of the uams */
1110 void auth_unload(void)
1112 struct uam_mod *mod, *prev, *start = &uam_modules;
1114 prev = start->uam_prev;
1115 while ((mod = prev) != start) {
1116 prev = prev->uam_prev;