2 * auth.c - PPP authentication and phase control.
4 * Copyright (c) 1993 The Australian National University.
7 * Redistribution and use in source and binary forms are permitted
8 * provided that the above copyright notice and this paragraph are
9 * duplicated in all such forms and that any documentation,
10 * advertising materials, and other materials related to such
11 * distribution and use acknowledge that the software was developed
12 * by the Australian National University. The name of the University
13 * may not be used to endorse or promote products derived from this
14 * software without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
17 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
19 * Copyright (c) 1989 Carnegie Mellon University.
20 * All rights reserved.
22 * Redistribution and use in source and binary forms are permitted
23 * provided that the above copyright notice and this paragraph are
24 * duplicated in all such forms and that any documentation,
25 * advertising materials, and other materials related to such
26 * distribution and use acknowledge that the software was developed
27 * by Carnegie Mellon University. The name of the
28 * University may not be used to endorse or promote products derived
29 * from this software without specific prior written permission.
30 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
31 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
32 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
35 #define RCSID "$Id: auth.c,v 1.6 2006/11/24 03:33:52 andylin Exp $"
44 #include <sys/types.h>
46 #include <sys/socket.h>
50 #if defined(_PATH_LASTLOG) && defined(_linux_)
55 #include <netinet/in.h>
56 #include <arpa/inet.h>
62 #include <security/pam_appl.h>
68 #define PW_PPP PW_LOGIN
81 #include "pathnames.h"
83 static const char rcsid[] = RCSID;
84 #if defined(ONE_AND_ONE)
85 extern int auth_again; //defined in main.c
90 /* Bits in scan_authfile return value */
91 #define NONWILD_SERVER 1
92 #define NONWILD_CLIENT 2
94 #define ISWILD(word) (word[0] == '*' && word[1] == 0)
96 //#if !defined(INCLUDE_EMBHTTPD)
99 #if defined(ODM_LANG_LLL)
100 extern int ppp_session;
101 extern int got_ppp_down;
104 /* The name by which the peer authenticated itself to us. */
105 char peer_authname[MAXNAMELEN];
107 /* Records which authentication operations haven't completed yet. */
108 static int auth_pending[NUM_PPP];
110 /* Set if we have successfully called plogin() */
111 static int logged_in;
113 /* List of addresses which the peer may use. */
114 static struct permitted_ip *addresses[NUM_PPP];
116 /* Wordlist giving addresses which the peer may use
117 without authenticating itself. */
118 static struct wordlist *noauth_addrs;
120 /* Extra options to apply, from the secrets file entry for the peer. */
121 static struct wordlist *extra_options;
123 /* Number of network protocols which we have opened. */
124 static int num_np_open;
126 /* Number of network protocols which have come up. */
127 static int num_np_up;
129 /* Set if we got the contents of passwd[] from the pap-secrets file. */
130 static int passwd_from_file;
132 /* Set if we require authentication only because we have a default route. */
133 static bool default_auth;
135 /* Hook to enable a plugin to control the idle time limit */
136 int (*idle_time_hook) __P((struct ppp_idle *)) = NULL;
138 /* Hook for a plugin to say whether we can possibly authenticate any peer */
139 int (*pap_check_hook) __P((void)) = NULL;
141 /* Hook for a plugin to check the PAP user and password */
142 int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
143 struct wordlist **paddrs,
144 struct wordlist **popts)) = NULL;
146 /* Hook for a plugin to know about the PAP user logout */
147 void (*pap_logout_hook) __P((void)) = NULL;
149 /* Hook for a plugin to get the PAP password for authenticating us */
150 int (*pap_passwd_hook) __P((char *user, char *passwd)) = NULL;
153 * This is used to ensure that we don't start an auth-up/down
154 * script while one is already running.
161 static enum script_state auth_state = s_down;
162 static enum script_state auth_script_state = s_down;
163 static pid_t auth_script_pid = 0;
165 static int used_login; /* peer authenticated against login database */
170 bool uselogin = 0; /* Use /etc/passwd for checking PAP */
171 bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */
172 bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */
173 bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */
174 bool usehostname = 0; /* Use hostname for our_name */
175 bool auth_required = 0; /* Always require authentication from peer */
176 bool allow_any_ip = 0; /* Allow peer to use any IP address */
177 bool explicit_remote = 0; /* User specified explicit remote name */
178 char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
180 static char *uafname; /* name of most recent +ua file */
182 /* Bits in auth_pending[] */
183 #define PAP_WITHPEER 1
185 #define CHAP_WITHPEER 4
188 extern char *crypt __P((const char *, const char *));
190 /* Prototypes for procedures local to this file. */
192 static void network_phase __P((int));
193 static void check_idle __P((void *));
195 static void check_link __P((void *));
196 static void check_lan_link __P((void *));
197 static void connect_time_expired __P((void *));
198 static int plogin __P((char *, char *, char **));
199 static void plogout __P((void));
200 static int null_login __P((int));
201 static int get_pap_passwd __P((char *));
202 static int have_pap_secret __P((int *));
203 static int have_chap_secret __P((char *, char *, int, int *));
204 static int ip_addr_check __P((u_int32_t, struct permitted_ip *));
205 static int scan_authfile __P((FILE *, char *, char *, char *,
206 struct wordlist **, struct wordlist **,
208 static void free_wordlist __P((struct wordlist *));
209 static void auth_script __P((char *));
210 static void auth_script_done __P((void *));
211 static void set_allowed_addrs __P((int, struct wordlist *, struct wordlist *));
212 static int some_ip_ok __P((struct wordlist *));
213 static int setupapfile __P((char **));
214 static int privgroup __P((char **));
215 static int set_noauth_addr __P((char **));
216 static void check_access __P((FILE *, char *));
217 static int wordlist_count __P((struct wordlist *));
220 * Authentication-related options.
222 option_t auth_options[] = {
223 { "auth", o_bool, &auth_required,
224 "Require authentication from peer", OPT_PRIO | 1 },
225 { "noauth", o_bool, &auth_required,
226 "Don't require peer to authenticate", OPT_PRIOSUB | OPT_PRIV,
228 { "require-pap", o_bool, &lcp_wantoptions[0].neg_upap,
229 "Require PAP authentication from peer",
230 OPT_PRIOSUB | 1, &auth_required },
231 { "+pap", o_bool, &lcp_wantoptions[0].neg_upap,
232 "Require PAP authentication from peer",
233 OPT_ALIAS | OPT_PRIOSUB | 1, &auth_required },
234 { "require-chap", o_bool, &lcp_wantoptions[0].neg_chap,
235 "Require CHAP authentication from peer",
236 OPT_PRIOSUB | 1, &auth_required },
237 { "+chap", o_bool, &lcp_wantoptions[0].neg_chap,
238 "Require CHAP authentication from peer",
239 OPT_ALIAS | OPT_PRIOSUB | 1, &auth_required },
241 { "refuse-pap", o_bool, &refuse_pap,
242 "Don't agree to auth to peer with PAP", 1 },
243 { "-pap", o_bool, &refuse_pap,
244 "Don't allow PAP authentication with peer", OPT_ALIAS | 1 },
246 { "refuse-chap", o_bool, &refuse_chap,
247 "Don't agree to auth to peer with CHAP", 1 },
248 { "-chap", o_bool, &refuse_chap,
249 "Don't allow CHAP authentication with peer", OPT_ALIAS | 1 },
251 { "name", o_string, our_name,
252 "Set local name for authentication",
253 OPT_PRIO | OPT_PRIV | OPT_STATIC, NULL, MAXNAMELEN },
255 { "+ua", o_special, (void *)setupapfile,
256 "Get PAP user and password from file",
257 OPT_PRIO | OPT_A2STRVAL, &uafname },
259 { "user", o_string, user,
260 "Set name for auth with peer", OPT_PRIO | OPT_STATIC, NULL, MAXNAMELEN },
262 { "password", o_string, passwd,
263 "Password for authenticating us to the peer",
264 OPT_PRIO | OPT_STATIC | OPT_HIDE, NULL, MAXSECRETLEN },
266 { "usehostname", o_bool, &usehostname,
267 "Must use hostname for authentication", 1 },
269 { "remotename", o_string, remote_name,
270 "Set remote name for authentication", OPT_PRIO | OPT_STATIC,
271 &explicit_remote, MAXNAMELEN },
273 { "login", o_bool, &uselogin,
274 "Use system password database for PAP", 1 },
276 { "papcrypt", o_bool, &cryptpap,
277 "PAP passwords are encrypted", 1 },
279 { "privgroup", o_special, (void *)privgroup,
280 "Allow group members to use privileged options", OPT_PRIV | OPT_A2LIST },
282 { "allow-ip", o_special, (void *)set_noauth_addr,
283 "Set IP address(es) which can be used without authentication",
284 OPT_PRIV | OPT_A2LIST },
290 * setupapfile - specifies UPAP info for authenticating with peer.
298 char u[MAXNAMELEN], p[MAXSECRETLEN];
301 lcp_allowoptions[0].neg_upap = 1;
303 /* open user info file */
304 fname = strdup(*argv);
306 novm("+ua file name");
308 ufile = fopen(fname, "r");
311 option_error("unable to open user login data file %s", fname);
314 check_access(ufile, fname);
318 if (fgets(u, MAXNAMELEN - 1, ufile) == NULL || fgets(p, MAXSECRETLEN - 1, ufile) == NULL){
319 option_error("unable to read user login data file %s", fname);
324 /* get rid of newlines */
326 if (l > 0 && u[l-1] == '\n')
329 if (l > 0 && p[l-1] == '\n')
332 if (override_value("user", option_priority, fname))
333 strlcpy(user, u, sizeof(user));
334 if (override_value("passwd", option_priority, fname))
335 strlcpy(passwd, p, sizeof(passwd));
342 * privgroup - allow members of the group to have privileged access.
353 option_error("group %s is unknown", *argv);
356 for (i = 0; i < ngroups; ++i) {
357 if (groups[i] == g->gr_gid) {
367 * set_noauth_addr - set address(es) that can be used without authentication.
368 * Equivalent to specifying an entry like `"" * "" addr' in pap-secrets.
371 set_noauth_addr(argv)
375 int l = strlen(addr) + 1;
378 wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l);
380 novm("allow-ip argument");
381 wp->word = (char *) (wp + 1);
382 wp->next = noauth_addrs;
383 BCOPY(addr, wp->word, l);
390 * An Open on LCP has requested a change from Dead to Establish phase.
391 * Do what's necessary to bring the physical layer up.
400 * LCP has terminated the link; go to the Dead phase and take the
401 * physical layer down.
404 link_terminated(unit)
407 if (phase == PHASE_DEAD)
409 if (pap_logout_hook) {
415 new_phase(PHASE_DEAD);
416 notice("Connection terminated.");
420 * LCP has gone down; it will either die or try to re-establish.
427 struct protent *protp;
430 if (auth_script_state == s_up && auth_script_pid == 0) {
431 update_link_stats(unit);
432 auth_script_state = s_down;
433 auth_script(_PATH_AUTHDOWN);
435 for (i = 0; (protp = protocols[i]) != NULL; ++i) {
436 if (!protp->enabled_flag)
438 if (protp->protocol != PPP_LCP && protp->lowerdown != NULL)
439 (*protp->lowerdown)(unit);
440 if (protp->protocol < 0xC000 && protp->close != NULL)
441 (*protp->close)(unit, "LCP down");
445 if (phase != PHASE_DEAD)
446 new_phase(PHASE_TERMINATE);
449 /*==== add by Andrew to limit the times of authentication ====*/
450 int isRetriesTimesOut(unit)
453 lcp_options *ho = &lcp_hisoptions[unit];
457 chap_state *cstate = &chap[unit];
458 if(cstate->retries <= 0)
460 } else if (ho->neg_upap) {
461 upap_state *u = &upap[unit];
462 if(u->us_retries <= 0)
470 * The link is established.
471 * Proceed to the Dead, Authenticate or Network phase as appropriate.
474 link_established(unit)
478 lcp_options *wo = &lcp_wantoptions[unit];
479 lcp_options *go = &lcp_gotoptions[unit];
480 lcp_options *ho = &lcp_hisoptions[unit];
482 struct protent *protp;
485 /*==== add by Andrew to limit the times of authentication ====*/
486 //#if defined (PPP_AUTH_LIMIT)
488 if(isRetriesTimesOut(unit)) {
489 //system("echo '0:the times of retry is exhausted' > /var/pppmesg");
490 lcp_close(unit, "retries times is out");
491 status = EXIT_PEER_AUTH_FAILED;
492 #ifdef BBB_XML_API //Wilson add, (04/18/2005)
494 fp = fopen("/var/pppStatus", "w+");
499 #endif //endif BBB_XML_API
500 #if defined(ODM_LANG_LLL)
502 if (ppp_session == PPPOE){
503 wsnfp = fopen("/var/btaolstatus", "w");
505 fprintf(wsnfp, "%d", 2);
508 sprintf(cmd,"kill -9 %d",glbppppid);
512 //sprintf(cmd,"echo 1 > /var/af_%s",req_name);
514 sprintf(cmd,"kill -9 %d",glbppppid);
519 #endif//PPP_AUTH_LIMIT
523 * Tell higher-level protocols that LCP is up.
525 for (i = 0; (protp = protocols[i]) != NULL; ++i)
526 if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL)
527 (*protp->lowerup)(unit);
529 if (auth_required && !(go->neg_chap || go->neg_upap)) {
531 * We wanted the peer to authenticate itself, and it refused:
532 * if we have some address(es) it can use without auth, fine,
533 * otherwise treat it as though it authenticated with PAP using
534 * a username * of "" and a password of "". If that's not OK,
537 if (noauth_addrs != NULL) {
538 set_allowed_addrs(unit, NULL, NULL);
539 } else if (!wo->neg_upap || uselogin || !null_login(unit)) {
540 warn("peer refused to authenticate: terminating link");
541 lcp_close(unit, "peer refused to authenticate");
542 status = EXIT_PEER_AUTH_FAILED;
547 new_phase(PHASE_AUTHENTICATE);
551 ChapAuthPeer(unit, our_name, go->chap_mdtype);
553 } else if (go->neg_upap) {
558 ChapAuthWithPeer(unit, user, ho->chap_mdtype);
559 auth |= CHAP_WITHPEER;
560 } else if (ho->neg_upap) {
561 // Ported from 2.10.1--06/02/2003 continue Auth for Null Password
562 // if (passwd[0] == 0) {
563 // passwd_from_file = 1;
564 // if (!get_pap_passwd(passwd))
565 // error("No secret found for PAP login");
567 upap_authwithpeer(unit, user, passwd);
568 auth |= PAP_WITHPEER;
570 auth_pending[unit] = auth;
577 * Proceed to the network phase.
583 lcp_options *go = &lcp_gotoptions[unit];
586 * If the peer had to authenticate, run the auth-up script now.
588 if (go->neg_chap || go->neg_upap) {
590 if (auth_script_state == s_down && auth_script_pid == 0) {
591 auth_script_state = s_up;
592 auth_script(_PATH_AUTHUP);
598 * If we negotiated callback, do it now.
601 new_phase(PHASE_CALLBACK);
602 (*cbcp_protent.open)(unit);
608 * Process extra options from the secrets file
613 options_from_list(extra_options, 1);
614 free_wordlist(extra_options);
625 struct protent *protp;
627 new_phase(PHASE_NETWORK);
629 #ifdef HAVE_MULTILINK
631 if (mp_join_bundle()) {
632 if (updetach && !nodetach)
637 #endif /* HAVE_MULTILINK */
641 set_filters(&pass_filter, &active_filter);
643 for (i = 0; (protp = protocols[i]) != NULL; ++i) {
644 if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {
646 if (protp->protocol != PPP_CCP)
651 if (num_np_open == 0)
653 lcp_close(0, "No network protocols running");
657 * The peer has failed to authenticate himself using `protocol'.
660 auth_peer_fail(unit, protocol)
664 * Authentication failure: take the link down
666 lcp_close(unit, "Authentication failed");
667 status = EXIT_PEER_AUTH_FAILED;
671 * The peer has been successfully authenticated using `protocol'.
674 auth_peer_success(unit, protocol, name, namelen)
689 warn("auth_peer_success: unknown protocol %x", protocol);
694 * Save the authenticated name of the peer for later.
696 if (namelen > sizeof(peer_authname) - 1)
697 namelen = sizeof(peer_authname) - 1;
698 BCOPY(name, peer_authname, namelen);
699 peer_authname[namelen] = 0;
700 script_setenv("PEERNAME", peer_authname, 0);
703 * If there is no more authentication still to be done,
704 * proceed to the network (or callback) phase.
706 if ((auth_pending[unit] &= ~bit) == 0)
711 * We have failed to authenticate ourselves to the peer using `protocol'.
714 auth_withpeer_fail(unit, protocol)
717 if (passwd_from_file)
718 BZERO(passwd, MAXSECRETLEN);
720 * We've failed to authenticate ourselves to our peer.
721 * Some servers keep sending CHAP challenges, but there
722 * is no point in persisting without any way to get updated
723 * authentication secrets.
725 lcp_close(unit, "Failed to authenticate ourselves to peer");
726 #if defined(ONE_AND_ONE)
727 if(isp_1n1 && is1n1) {
728 upap_state *u = &upap[unit];
729 if(u->us_1n1stage==1) {
732 status = EXIT_AUTH_TOPEER_FAILED;
733 printf("PPP: Authentication failed.\n");
734 create_msg(BCM_PPPOE_AUTH_FAILED);
735 syslog(LOG_ERR,"User name and password authentication failed.\n");
738 status = EXIT_AUTH_TOPEER_FAILED;
739 printf("PPP: Authentication failed.\n");
740 create_msg(BCM_PPPOE_AUTH_FAILED);
741 syslog(LOG_ERR,"User name and password authentication failed.\n");
744 status = EXIT_AUTH_TOPEER_FAILED;
746 // if ((strlen(user) > 0) || autoscanP2) {
747 printf("PPP: Authentication failed.\n");
748 create_msg(BCM_PPPOE_AUTH_FAILED);
749 //syslog(LOG_ERR,"User name and password authentication failed.\n");
750 syslog(LOG_ERR,"PPP Authentication Failed\n");
752 //#ifdef BBB_XML_API //Wilson add, (04/18/2005)
753 #if defined(SUPPORT_XML_API) //Wilson add, (03/14/2006)
755 fp = fopen("/var/pppStatus", "w+");
760 #endif //end#if defined(BBB_XML_API) || defined(SUPPORT_XML_API) //Wilson add, (03/14/2006)
761 #if defined(SUPPORT_TR69C) //Wilson add, (09/01/2006)
763 char filePath[128]={0,};
764 sprintf(filePath, "/var/%s_LastError", session_path);
765 fd = fopen(filePath, "w+");
767 fprintf(fd, "ERROR_AUTHENTICATION_FAILURE");
770 #endif //endif SUPPORT_TR69C
771 //marked by Charles 07/03/2003 to allow continous retry
777 * We have successfully authenticated ourselves with the peer using `protocol'.
780 auth_withpeer_success(unit, protocol)
788 syslog(LOG_NOTICE,"PPP Authentication Successful\n");
791 if (passwd_from_file)
792 BZERO(passwd, MAXSECRETLEN);
794 syslog(LOG_NOTICE,"PPP Authentication Successful\n");
797 warn("auth_withpeer_success: unknown protocol %x", protocol);
802 * If there is no more authentication still being done,
803 * proceed to the network (or callback) phase.
805 if ((auth_pending[unit] &= ~bit) == 0)
811 * np_up - a network protocol has come up.
819 if (num_np_up == 0) {
821 * At this point we consider that the link has come up successfully.
825 new_phase(PHASE_RUNNING);
827 if (idle_time_hook != 0)
828 tlim = (*idle_time_hook)(NULL);
830 tlim = idle_time_limit;
832 TIMEOUT(check_idle, NULL, tlim);
835 TIMEOUT(check_link, NULL, 3);
839 TIMEOUT(check_lan_link, NULL, 5);
842 * Set a timeout to close the connection once the maximum
843 * connect time has expired.
846 TIMEOUT(connect_time_expired, 0, maxconnect);
849 * Detach now, if the updetach option was given.
851 if (updetach && !nodetach)
858 * np_down - a network protocol has gone down.
864 if (--num_np_up == 0) {
865 UNTIMEOUT(check_idle, NULL);
867 UNTIMEOUT(check_link, NULL);
869 UNTIMEOUT(check_lan_link, NULL);
870 new_phase(PHASE_NETWORK);
875 * np_finished - a network protocol has finished using the link.
878 np_finished(unit, proto)
881 if (--num_np_open <= 0) {
882 /* no further use for the link: shut up shop. */
883 lcp_close(0, "No network protocols running");
888 * check_idle - check whether the link has been idle for long
889 * enough that we can shut it down.
895 struct ppp_idle idle;
898 #if defined(SUPPORT_TR69C) //Wilson add, (09/01/2006)
900 char filePath[128]={0,};
903 if (!get_idle_time(0, &idle))
905 if (idle_time_hook != 0) {
906 tlim = idle_time_hook(&idle);
908 tlim = idle_time_limit - idle.xmit_idle;
909 /***************************************************
910 * idle timer will only consider LAN-->WAN traffic *
911 * comment it according Brcm patch *
912 * Andrew(02/12/2004) *
913 ***************************************************/
914 //itime = MIN(idle.xmit_idle, idle.recv_idle);
915 //tlim = idle_time_limit - itime;
916 /***************************************************/
919 /* link is idle: shut it down. */
920 notice("Terminating connection due to lack of activity.");
921 lcp_close(0, "Link inactive");
923 status = EXIT_IDLE_TIMEOUT;
926 sprintf(oldsession, "%s", "");
927 #if defined(SUPPORT_TR69C) //Wilson add, (09/01/2006)
928 sprintf(filePath, "/var/%s_LastError", session_path);
929 fp = fopen(filePath, "w+");
931 fprintf(fp, "ERROR_IDLE_DISCONNECT");
934 #endif //endif SUPPORT_TR69C
936 TIMEOUT(check_idle, NULL, tlim);
945 if ((fd=fopen("/var/run/wanup", "r"))) {
956 sprintf(path, "%s/%s/%s", "/proc/var/fyi/wan", session_path, "wanup");
957 //printf("=== %s ===\n", path);
959 if (fd=fopen(path, "r")) {
962 //printf("data=%x\n", data[0]);
963 if (strstr(data, "1"))
979 /* link is idle: shut it down. */
980 notice("Terminating connection due to link down.");
981 lcp_close(0, "Link down");
983 status = EXIT_IDLE_TIMEOUT;
985 UNTIMEOUT(check_link, NULL);
986 TIMEOUT(check_link, NULL, 3);
990 int lan_pending_cur=0;
991 int lan_pending_max=36;
998 if ((fd=fopen("/var/run/ethup", "r"))) {
1003 else if ((fd=fopen("/var/run/usbup", "r"))) {
1007 }else if ((fd=fopen("/var/run/wlup", "r"))) { //Paul add, 8/22/2006 check wlan is enabled or not
1023 if (!lan_link_up()) {
1025 //printf("LAN link down %d ....\n", lan_pending_cur);
1026 if (lan_pending_cur >= lan_pending_max) {
1027 /* link is idle: shut it down. */
1029 notice("Terminating connection due to link down.");
1030 lcp_close(0, "Link down");
1032 status = EXIT_IDLE_TIMEOUT;
1034 UNTIMEOUT(check_lan_link, NULL);
1035 TIMEOUT(check_lan_link, NULL, 5);
1037 //printf("LAN link up ....\n");
1039 UNTIMEOUT(check_lan_link, NULL);
1040 TIMEOUT(check_lan_link, NULL, 5);
1045 * connect_time_expired - log a message and close the connection.
1048 connect_time_expired(arg)
1051 info("Connect time expired");
1052 lcp_close(0, "Connect time expired"); /* Close connection */
1053 status = EXIT_CONNECT_TIME;
1057 * auth_check_options - called to check authentication options.
1060 auth_check_options()
1062 lcp_options *wo = &lcp_wantoptions[0];
1066 /* Default our_name to hostname, and user to our_name */
1067 if (our_name[0] == 0 || usehostname)
1068 strlcpy(our_name, hostname, sizeof(our_name));
1070 strlcpy(user, our_name, sizeof(user));
1073 * If we have a default route, require the peer to authenticate
1074 * unless the noauth option was given or the real user is root.
1076 if (!auth_required && !allow_any_ip && have_route_to(0) && !privileged) {
1081 /* If authentication is required, ask peer for CHAP or PAP. */
1082 if (auth_required) {
1084 if (!wo->neg_chap && !wo->neg_upap) {
1094 * Check whether we have appropriate secrets to use
1095 * to authenticate the peer.
1098 can_auth = wo->neg_upap && (uselogin || have_pap_secret(&lacks_ip));
1099 if (!can_auth && wo->neg_chap) {
1100 can_auth = have_chap_secret((explicit_remote? remote_name: NULL),
1101 our_name, 1, &lacks_ip);
1104 if (auth_required && !can_auth && noauth_addrs == NULL) {
1107 "By default the remote system is required to authenticate itself");
1109 "(because this system has a default route to the internet)");
1110 } else if (explicit_remote)
1112 "The remote system (%s) is required to authenticate itself",
1116 "The remote system is required to authenticate itself");
1118 "but I couldn't find any suitable secret (password) for it to use to do so.");
1121 "(None of the available passwords would let it use an IP address.)");
1128 * auth_reset - called when LCP is starting negotiations to recheck
1129 * authentication options, i.e. whether we have appropriate secrets
1130 * to use for authenticating ourselves and/or the peer.
1136 lcp_options *go = &lcp_gotoptions[unit];
1137 lcp_options *ao = &lcp_allowoptions[0];
1139 // Ported from 2.10.1---Jack Suen 06/02/2003 Let Null Password also to do Auth State
1140 ao->neg_upap = !refuse_pap;
1141 ao->neg_chap = !refuse_chap;
1144 ao->neg_upap = !refuse_pap && (passwd[0] != 0 || get_pap_passwd(NULL));
1145 ao->neg_chap = !refuse_chap
1147 || have_chap_secret(user, (explicit_remote? remote_name: NULL),
1150 if (go->neg_upap && !uselogin && !have_pap_secret(NULL))
1153 if (!have_chap_secret((explicit_remote? remote_name: NULL),
1161 * check_passwd - Check the user name and passwd against the PAP secrets
1162 * file. If requested, also check against the system password database,
1163 * and login the user if OK.
1166 * UPAP_AUTHNAK: Authentication failed.
1167 * UPAP_AUTHACK: Authentication succeeded.
1168 * In either case, msg points to an appropriate message.
1171 check_passwd(unit, auser, userlen, apasswd, passwdlen, msg)
1182 struct wordlist *addrs = NULL, *opts = NULL;
1183 char passwd[256], user[256];
1184 char secret[MAXWORDLEN];
1185 static int attempts = 0;
1188 * Make copies of apasswd and auser, then null-terminate them.
1189 * If there are unprintable characters in the password, make
1192 slprintf(passwd, sizeof(passwd), "%.*v", passwdlen, apasswd);
1193 slprintf(user, sizeof(user), "%.*v", userlen, auser);
1197 * Check if a plugin wants to handle this.
1199 if (pap_auth_hook) {
1200 ret = (*pap_auth_hook)(user, passwd, msg, &addrs, &opts);
1203 set_allowed_addrs(unit, addrs, opts);
1204 BZERO(passwd, sizeof(passwd));
1206 free_wordlist(addrs);
1207 return ret? UPAP_AUTHACK: UPAP_AUTHNAK;
1212 * Open the file of pap secrets and scan for a suitable secret
1213 * for authenticating this user.
1215 filename = _PATH_UPAPFILE;
1216 addrs = opts = NULL;
1218 f = fopen(filename, "r");
1220 error("Can't open PAP password file %s: %m", filename);
1223 check_access(f, filename);
1224 if (scan_authfile(f, user, our_name, secret, &addrs, &opts, filename) < 0) {
1225 warn("no PAP secret found for %s", user);
1228 * If the secret is "@login", it means to check
1229 * the password against the login database.
1231 int login_secret = strcmp(secret, "@login") == 0;
1233 if (uselogin || login_secret) {
1234 /* login option or secret is @login */
1235 ret = plogin(user, passwd, msg);
1236 if (ret == UPAP_AUTHNAK)
1237 warn("PAP login failure for %s", user);
1241 if (secret[0] != 0 && !login_secret) {
1242 /* password given in pap-secrets - must match */
1243 if ((cryptpap || strcmp(passwd, secret) != 0)
1244 && strcmp(crypt(passwd, secret), secret) != 0) {
1246 warn("PAP authentication failure for %s", user);
1253 if (ret == UPAP_AUTHNAK) {
1255 *msg = "Login incorrect";
1257 * XXX can we ever get here more than once??
1258 * Frustrate passwd stealer programs.
1259 * Allow 10 tries, but start backing off after 3 (stolen from login).
1260 * On 10'th, drop the connection.
1262 if (attempts++ >= 10) {
1263 warn("%d LOGIN FAILURES ON %s, %s", attempts, devnam, user);
1264 lcp_close(unit, "login failed");
1267 sleep((u_int) (attempts - 3) * 5);
1269 free_wordlist(opts);
1272 attempts = 0; /* Reset count */
1275 set_allowed_addrs(unit, addrs, opts);
1279 free_wordlist(addrs);
1280 BZERO(passwd, sizeof(passwd));
1281 BZERO(secret, sizeof(secret));
1287 * This function is needed for PAM.
1291 /* Static variables used to communicate between the conversation function
1292 * and the server_login function
1294 static char *PAM_username;
1295 static char *PAM_password;
1296 static int PAM_error = 0;
1297 static pam_handle_t *pamh = NULL;
1299 /* PAM conversation function
1300 * Here we assume (for now, at least) that echo on means login name, and
1301 * echo off means password.
1304 static int PAM_conv (int num_msg, const struct pam_message **msg,
1305 struct pam_response **resp, void *appdata_ptr)
1308 struct pam_response *reply = NULL;
1310 #define COPY_STRING(s) (s) ? strdup(s) : NULL
1312 reply = malloc(sizeof(struct pam_response) * num_msg);
1313 if (!reply) return PAM_CONV_ERR;
1315 for (replies = 0; replies < num_msg; replies++) {
1316 switch (msg[replies]->msg_style) {
1317 case PAM_PROMPT_ECHO_ON:
1318 reply[replies].resp_retcode = PAM_SUCCESS;
1319 reply[replies].resp = COPY_STRING(PAM_username);
1320 /* PAM frees resp */
1322 case PAM_PROMPT_ECHO_OFF:
1323 reply[replies].resp_retcode = PAM_SUCCESS;
1324 reply[replies].resp = COPY_STRING(PAM_password);
1325 /* PAM frees resp */
1330 /* ignore it, but pam still wants a NULL response... */
1331 reply[replies].resp_retcode = PAM_SUCCESS;
1332 reply[replies].resp = NULL;
1335 /* Must be an error of some sort... */
1338 return PAM_CONV_ERR;
1345 static struct pam_conv PAM_conversation = {
1349 #endif /* USE_PAM */
1352 * plogin - Check the user name and password against the system
1353 * password database, and login the user if OK.
1356 * UPAP_AUTHNAK: Login failed.
1357 * UPAP_AUTHACK: Login succeeded.
1358 * In either case, msg points to an appropriate message.
1361 static int plogin(user, passwd, msg)
1371 pam_error = pam_start ("ppp", user, &PAM_conversation, &pamh);
1372 if (pam_error != PAM_SUCCESS) {
1373 *msg = (char *) pam_strerror (pamh, pam_error);
1375 return UPAP_AUTHNAK;
1378 * Define the fields for the credential validation
1381 PAM_username = user;
1382 PAM_password = passwd;
1384 pam_set_item (pamh, PAM_TTY, devnam); /* this might be useful to some modules */
1389 pam_error = pam_authenticate (pamh, PAM_SILENT);
1390 if (pam_error == PAM_SUCCESS && !PAM_error) {
1391 pam_error = pam_acct_mgmt (pamh, PAM_SILENT);
1392 if (pam_error == PAM_SUCCESS)
1393 pam_open_session (pamh, PAM_SILENT);
1396 *msg = (char *) pam_strerror (pamh, pam_error);
1401 reopen_log(); /* apparently the PAM stuff does closelog() */
1402 PAM_username = NULL;
1403 PAM_password = NULL;
1404 if (pam_error != PAM_SUCCESS)
1405 return UPAP_AUTHNAK;
1406 #else /* #ifdef USE_PAM */
1409 * Use the non-PAM methods directly
1414 struct spwd *getspnam();
1416 struct passwd *pw = getpwnam(user);
1420 return (UPAP_AUTHNAK);
1423 spwd = getspnam(user);
1426 /* check the age of the password entry */
1427 long now = time(NULL) / 86400L;
1429 if ((spwd->sp_expire > 0 && now >= spwd->sp_expire)
1430 || ((spwd->sp_max >= 0 && spwd->sp_max < 10000)
1431 && spwd->sp_lstchg >= 0
1432 && now >= spwd->sp_lstchg + spwd->sp_max)) {
1433 warn("Password for %s has expired", user);
1434 return (UPAP_AUTHNAK);
1436 pw->pw_passwd = spwd->sp_pwdp;
1441 * If no passwd, don't let them login.
1443 if (pw->pw_passwd == NULL || strlen(pw->pw_passwd) < 2
1444 || strcmp(crypt(passwd, pw->pw_passwd), pw->pw_passwd) != 0)
1445 return (UPAP_AUTHNAK);
1447 #endif /* #ifdef USE_PAM */
1450 * Write a wtmp entry for this user.
1454 if (strncmp(tty, "/dev/", 5) == 0)
1456 logwtmp(tty, user, remote_name); /* Add wtmp login entry */
1458 #if defined(_PATH_LASTLOG) && !defined(USE_PAM)
1459 if (pw != (struct passwd *)NULL) {
1463 if ((fd = open(_PATH_LASTLOG, O_RDWR, 0)) >= 0) {
1464 (void)lseek(fd, (off_t)(pw->pw_uid * sizeof(ll)), SEEK_SET);
1465 memset((void *)&ll, 0, sizeof(ll));
1466 (void)time(&ll.ll_time);
1467 (void)strncpy(ll.ll_line, tty, sizeof(ll.ll_line));
1468 (void)write(fd, (char *)&ll, sizeof(ll));
1472 #endif /* _PATH_LASTLOG and not USE_PAM */
1474 info("user %s logged in", user);
1477 return (UPAP_AUTHACK);
1481 * plogout - Logout the user.
1490 pam_error = pam_close_session (pamh, PAM_SILENT);
1491 pam_end (pamh, pam_error);
1494 /* Apparently the pam stuff does closelog(). */
1496 #else /* ! USE_PAM */
1500 if (strncmp(tty, "/dev/", 5) == 0)
1502 logwtmp(tty, "", ""); /* Wipe out utmp logout entry */
1503 #endif /* ! USE_PAM */
1509 * null_login - Check if a username of "" and a password of "" are
1510 * acceptable, and iff so, set the list of acceptable IP addresses
1520 struct wordlist *addrs, *opts;
1521 char secret[MAXWORDLEN];
1524 * Open the file of pap secrets and scan for a suitable secret.
1526 filename = _PATH_UPAPFILE;
1528 f = fopen(filename, "r");
1531 check_access(f, filename);
1533 i = scan_authfile(f, "", our_name, secret, &addrs, &opts, filename);
1534 ret = i >= 0 && secret[0] == 0;
1535 BZERO(secret, sizeof(secret));
1538 set_allowed_addrs(unit, addrs, opts);
1540 free_wordlist(opts);
1542 free_wordlist(addrs);
1550 * get_pap_passwd - get a password for authenticating ourselves with
1551 * our peer using PAP. Returns 1 on success, 0 if no suitable password
1553 * Assumes passwd points to MAXSECRETLEN bytes of space (if non-null).
1556 get_pap_passwd(passwd)
1562 char secret[MAXWORDLEN];
1565 * Check whether a plugin wants to supply this.
1567 if (pap_passwd_hook) {
1568 ret = (*pap_passwd_hook)(user, passwd);
1573 filename = _PATH_UPAPFILE;
1574 f = fopen(filename, "r");
1577 check_access(f, filename);
1578 ret = scan_authfile(f, user,
1579 (remote_name[0]? remote_name: NULL),
1580 secret, NULL, NULL, filename);
1585 strlcpy(passwd, secret, MAXSECRETLEN);
1586 BZERO(secret, sizeof(secret));
1592 * have_pap_secret - check whether we have a PAP file with any
1593 * secrets that we could possibly use for authenticating the peer.
1596 have_pap_secret(lacks_ipp)
1602 struct wordlist *addrs;
1604 /* let the plugin decide, if there is one */
1605 if (pap_check_hook) {
1606 ret = (*pap_check_hook)();
1611 filename = _PATH_UPAPFILE;
1612 f = fopen(filename, "r");
1616 ret = scan_authfile(f, (explicit_remote? remote_name: NULL), our_name, NULL, &addrs, NULL, filename);
1618 if (ret >= 0 && !some_ip_ok(addrs)) {
1624 free_wordlist(addrs);
1631 * have_chap_secret - check whether we have a CHAP file with a
1632 * secret that we could possibly use for authenticating `client'
1633 * on `server'. Either can be the null string, meaning we don't
1634 * know the identity yet.
1637 have_chap_secret(client, server, need_ip, lacks_ipp)
1646 struct wordlist *addrs;
1648 filename = _PATH_CHAPFILE;
1649 f = fopen(filename, "r");
1653 if (client != NULL && client[0] == 0)
1655 else if (server != NULL && server[0] == 0)
1658 ret = scan_authfile(f, client, server, NULL, &addrs, NULL, filename);
1660 if (ret >= 0 && need_ip && !some_ip_ok(addrs)) {
1666 free_wordlist(addrs);
1673 * get_secret - open the CHAP secret file and return the secret
1674 * for authenticating the given client on the given server.
1675 * (We could be either client or server).
1678 get_secret(unit, client, server, secret, secret_len, am_server)
1689 struct wordlist *addrs, *opts;
1690 char secbuf[MAXWORDLEN];
1692 if (!am_server && passwd[0] != 0) {
1693 strlcpy(secbuf, passwd, sizeof(secbuf));
1695 filename = _PATH_CHAPFILE;
1699 f = fopen(filename, "r");
1701 error("Can't open chap secret file %s: %m", filename);
1704 check_access(f, filename);
1706 ret = scan_authfile(f, client, server, secbuf, &addrs, &opts, filename);
1712 set_allowed_addrs(unit, addrs, opts);
1714 free_wordlist(opts);
1716 free_wordlist(addrs);
1719 len = strlen(secbuf);
1720 if (len > MAXSECRETLEN) {
1721 error("Secret for %s on %s is too long", client, server);
1724 BCOPY(secbuf, secret, len);
1725 BZERO(secbuf, sizeof(secbuf));
1732 * set_allowed_addrs() - set the list of allowed addresses.
1733 * Also looks for `--' indicating options to apply for this peer
1734 * and leaves the following words in extra_options.
1737 set_allowed_addrs(unit, addrs, opts)
1739 struct wordlist *addrs;
1740 struct wordlist *opts;
1743 struct wordlist *ap, **plink;
1744 struct permitted_ip *ip;
1745 char *ptr_word, *ptr_mask;
1748 u_int32_t a, mask, ah, offset;
1749 struct ipcp_options *wo = &ipcp_wantoptions[unit];
1750 u_int32_t suggested_ip = 0;
1752 if (addresses[unit] != NULL)
1753 free(addresses[unit]);
1754 addresses[unit] = NULL;
1755 if (extra_options != NULL)
1756 free_wordlist(extra_options);
1757 extra_options = opts;
1760 * Count the number of IP addresses given.
1762 n = wordlist_count(addrs) + wordlist_count(noauth_addrs);
1765 ip = (struct permitted_ip *) malloc((n + 1) * sizeof(struct permitted_ip));
1769 /* temporarily append the noauth_addrs list to addrs */
1770 for (plink = &addrs; *plink != NULL; plink = &(*plink)->next)
1772 *plink = noauth_addrs;
1775 for (ap = addrs; ap != NULL; ap = ap->next) {
1776 /* "-" means no addresses authorized, "*" means any address allowed */
1777 ptr_word = ap->word;
1778 if (strcmp(ptr_word, "-") == 0)
1780 if (strcmp(ptr_word, "*") == 0) {
1782 ip[n].base = ip[n].mask = 0;
1788 if (*ptr_word == '!') {
1793 mask = ~ (u_int32_t) 0;
1795 ptr_mask = strchr (ptr_word, '/');
1796 if (ptr_mask != NULL) {
1800 bit_count = (int) strtol (ptr_mask+1, &endp, 10);
1801 if (bit_count <= 0 || bit_count > 32) {
1802 warn("invalid address length %v in auth. address list",
1806 bit_count = 32 - bit_count; /* # bits in host part */
1808 offset = ifunit + 1;
1812 warn("invalid address length syntax: %v", ptr_mask+1);
1819 hp = gethostbyname(ptr_word);
1820 if (hp != NULL && hp->h_addrtype == AF_INET) {
1821 a = *(u_int32_t *)hp->h_addr;
1823 np = getnetbyname (ptr_word);
1824 if (np != NULL && np->n_addrtype == AF_INET) {
1825 a = htonl (*(u_int32_t *)np->n_net);
1826 if (ptr_mask == NULL) {
1827 /* calculate appropriate mask for net */
1830 mask = IN_CLASSA_NET;
1831 else if (IN_CLASSB(ah))
1832 mask = IN_CLASSB_NET;
1833 else if (IN_CLASSC(ah))
1834 mask = IN_CLASSC_NET;
1837 a = inet_addr (ptr_word);
1841 if (ptr_mask != NULL)
1844 if (a == (u_int32_t)-1L) {
1845 warn("unknown host %s in auth. address list", ap->word);
1849 if (offset >= ~mask) {
1850 warn("interface unit %d too large for subnet %v",
1854 a = htonl((ntohl(a) & mask) + offset);
1855 mask = ~(u_int32_t)0;
1857 ip[n].mask = htonl(mask);
1858 ip[n].base = a & ip[n].mask;
1860 if (~mask == 0 && suggested_ip == 0)
1865 ip[n].permit = 0; /* make the last entry forbid all addresses */
1866 ip[n].base = 0; /* to terminate the list */
1869 addresses[unit] = ip;
1872 * If the address given for the peer isn't authorized, or if
1873 * the user hasn't given one, AND there is an authorized address
1874 * which is a single host, then use that if we find one.
1876 if (suggested_ip != 0
1877 && (wo->hisaddr == 0 || !auth_ip_addr(unit, wo->hisaddr))) {
1878 wo->hisaddr = suggested_ip;
1880 * Do we insist on this address? No, if there are other
1881 * addresses authorized than the suggested one.
1884 wo->accept_remote = 1;
1889 * auth_ip_addr - check whether the peer is authorized to use
1890 * a given IP address. Returns 1 if authorized, 0 otherwise.
1893 auth_ip_addr(unit, addr)
1899 /* don't allow loopback or multicast address */
1900 if (bad_ip_adrs(addr))
1903 if (addresses[unit] != NULL) {
1904 ok = ip_addr_check(addr, addresses[unit]);
1909 return 0; /* no addresses authorized */
1910 return allow_any_ip || privileged || !have_route_to(addr);
1914 ip_addr_check(addr, addrs)
1916 struct permitted_ip *addrs;
1919 if ((addr & addrs->mask) == addrs->base)
1920 return addrs->permit;
1924 * bad_ip_adrs - return 1 if the IP address is one we don't want
1925 * to use, such as an address in the loopback net or a multicast address.
1926 * addr is in network byte order.
1933 return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET
1934 || IN_MULTICAST(addr) || IN_BADCLASS(addr);
1938 * some_ip_ok - check a wordlist to see if it authorizes any
1943 struct wordlist *addrs;
1945 for (; addrs != 0; addrs = addrs->next) {
1946 if (addrs->word[0] == '-')
1948 if (addrs->word[0] != '!')
1949 return 1; /* some IP address is allowed */
1955 * check_access - complain if a secret file has too-liberal permissions.
1958 check_access(f, filename)
1964 if (fstat(fileno(f), &sbuf) < 0) {
1965 warn("cannot stat secret file %s: %m", filename);
1966 } else if ((sbuf.st_mode & (S_IRWXG | S_IRWXO)) != 0) {
1967 warn("Warning - secret file %s has world and/or group access",
1974 * scan_authfile - Scan an authorization file for a secret suitable
1975 * for authenticating `client' on `server'. The return value is -1
1976 * if no secret is found, otherwise >= 0. The return value has
1977 * NONWILD_CLIENT set if the secret didn't have "*" for the client, and
1978 * NONWILD_SERVER set if the secret didn't have "*" for the server.
1979 * Any following words on the line up to a "--" (i.e. address authorization
1980 * info) are placed in a wordlist and returned in *addrs. Any
1981 * following words (extra options) are placed in a wordlist and
1982 * returned in *opts.
1983 * We assume secret is NULL or points to MAXWORDLEN bytes of space.
1986 scan_authfile(f, client, server, secret, addrs, opts, filename)
1991 struct wordlist **addrs;
1992 struct wordlist **opts;
1996 int got_flag, best_flag;
1998 struct wordlist *ap, *addr_list, *alist, **app;
1999 char word[MAXWORDLEN];
2000 char atfile[MAXWORDLEN];
2001 char lsecret[MAXWORDLEN];
2008 if (!getword(f, word, &newline, filename))
2009 return -1; /* file is empty??? */
2014 * Skip until we find a word at the start of a line.
2016 while (!newline && getword(f, word, &newline, filename))
2019 break; /* got to end of file */
2022 * Got a client - check if it's a match or a wildcard.
2025 if (client != NULL && strcmp(word, client) != 0 && !ISWILD(word)) {
2030 got_flag = NONWILD_CLIENT;
2033 * Now get a server and check if it matches.
2035 if (!getword(f, word, &newline, filename))
2039 if (!ISWILD(word)) {
2040 if (server != NULL && strcmp(word, server) != 0)
2042 got_flag |= NONWILD_SERVER;
2046 * Got some sort of a match - see if it's better than what
2049 if (got_flag <= best_flag)
2055 if (!getword(f, word, &newline, filename))
2060 if (secret != NULL) {
2062 * Special syntax: @/pathname means read secret from file.
2064 if (word[0] == '@' && word[1] == '/') {
2065 strlcpy(atfile, word+1, sizeof(atfile));
2066 if ((sf = fopen(atfile, "r")) == NULL) {
2067 warn("can't open indirect secret file %s", atfile);
2070 check_access(sf, atfile);
2071 if (!getword(sf, word, &xxx, atfile)) {
2072 warn("no secret in indirect secret file %s", atfile);
2078 strlcpy(lsecret, word, sizeof(lsecret));
2082 * Now read address authorization info and make a wordlist.
2086 if (!getword(f, word, &newline, filename) || newline)
2088 ap = (struct wordlist *)
2089 malloc(sizeof(struct wordlist) + strlen(word) + 1);
2091 novm("authorized addresses");
2092 ap->word = (char *) (ap + 1);
2093 strcpy(ap->word, word);
2100 * This is the best so far; remember it.
2102 best_flag = got_flag;
2104 free_wordlist(addr_list);
2107 strlcpy(secret, lsecret, MAXWORDLEN);
2113 /* scan for a -- word indicating the start of options */
2114 for (app = &addr_list; (ap = *app) != NULL; app = &ap->next)
2115 if (strcmp(ap->word, "--") == 0)
2117 /* ap = start of options */
2119 ap = ap->next; /* first option */
2120 free(*app); /* free the "--" word */
2121 *app = NULL; /* terminate addr list */
2125 else if (ap != NULL)
2129 else if (addr_list != NULL)
2130 free_wordlist(addr_list);
2136 * wordlist_count - return the number of items in a wordlist
2140 struct wordlist *wp;
2144 for (n = 0; wp != NULL; wp = wp->next)
2150 * free_wordlist - release memory allocated for a wordlist.
2154 struct wordlist *wp;
2156 struct wordlist *next;
2158 while (wp != NULL) {
2166 * auth_script_done - called when the auth-up or auth-down script
2170 auth_script_done(arg)
2173 auth_script_pid = 0;
2174 switch (auth_script_state) {
2176 if (auth_state == s_down) {
2177 auth_script_state = s_down;
2178 auth_script(_PATH_AUTHDOWN);
2182 if (auth_state == s_up) {
2183 auth_script_state = s_up;
2184 auth_script(_PATH_AUTHUP);
2191 * auth_script - execute a script with arguments
2192 * interface-name peer-name real-user tty speed
2204 if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL)
2205 user_name = pw->pw_name;
2207 slprintf(struid, sizeof(struid), "%d", getuid());
2210 slprintf(strspeed, sizeof(strspeed), "%d", baud_rate);
2214 argv[2] = peer_authname;
2215 argv[3] = user_name;
2220 auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL);