2 * main.c - Point-to-Point Protocol main module
4 * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
18 * 3. The name "Carnegie Mellon University" must not be used to
19 * endorse or promote products derived from this software without
20 * prior written permission. For permission or any legal
21 * details, please contact
22 * Office of Technology Transfer
23 * Carnegie Mellon University
25 * Pittsburgh, PA 15213-3890
26 * (412) 268-4387, fax: (412) 268-7395
27 * tech-transfer@andrew.cmu.edu
29 * 4. Redistributions of any form whatsoever must retain the following
31 * "This product includes software developed by Computing Services
32 * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
34 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
35 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
36 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
37 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
38 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
39 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
40 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
42 * Copyright (c) 1999-2004 Paul Mackerras. All rights reserved.
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
48 * 1. Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
51 * 2. The name(s) of the authors of this software must not be used to
52 * endorse or promote products derived from this software without
53 * prior written permission.
55 * 3. Redistributions of any form whatsoever must retain the following
57 * "This product includes software developed by Paul Mackerras
58 * <paulus@samba.org>".
60 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
61 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
62 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
63 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
64 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
65 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
66 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
69 #define RCSID "$Id: main.c,v 1.156 2008/06/23 11:47:18 paulus Exp $"
84 #include <sys/param.h>
85 #include <sys/types.h>
88 #include <sys/resource.h>
90 #include <sys/socket.h>
91 #include <netinet/in.h>
92 #include <arpa/inet.h>
103 #include "chap-new.h"
107 #include "pathnames.h"
119 #endif /* IPX_CHANGE */
126 char ifname[MAXIFNAMELEN]; /* Interface name */
127 int ifunit; /* Interface unit number */
129 struct channel *the_channel;
131 char *progname; /* Name of this program */
132 char hostname[MAXNAMELEN]; /* Our hostname */
133 static char pidfilename[MAXPATHLEN]; /* name of pid file */
134 static char linkpidfile[MAXPATHLEN]; /* name of linkname pid file */
135 char ppp_devnam[MAXPATHLEN]; /* name of PPP tty (maybe ttypx) */
136 uid_t uid; /* Our real user-id */
137 struct notifier *pidchange = NULL;
138 struct notifier *phasechange = NULL;
139 struct notifier *exitnotify = NULL;
140 struct notifier *sigreceived = NULL;
141 struct notifier *fork_notifier = NULL;
143 int hungup; /* terminal has been hung up */
144 int privileged; /* we're running as real uid root */
145 int need_holdoff; /* need holdoff period before restarting */
146 int detached; /* have detached from terminal */
147 volatile int status; /* exit status for pppd */
148 int unsuccess; /* # unsuccessful connection attempts */
149 int do_callback; /* != 0 if we should do callback next */
150 int doing_callback; /* != 0 if we are doing callback */
151 int ppp_session_number; /* Session number, for channels with such a
152 concept (eg PPPoE) */
153 int childwait_done; /* have timed out waiting for children */
156 TDB_CONTEXT *pppdb; /* database for storing status etc. */
161 int (*holdoff_hook) __P((void)) = NULL;
162 int (*new_phase_hook) __P((int)) = NULL;
163 void (*snoop_recv_hook) __P((unsigned char *p, int len)) = NULL;
164 void (*snoop_send_hook) __P((unsigned char *p, int len)) = NULL;
166 static int conn_running; /* we have a [dis]connector running */
167 static int fd_loop; /* fd for getting demand-dial packets */
169 int fd_devnull; /* fd for /dev/null */
170 int devfd = -1; /* fd of underlying device */
171 int fd_ppp = -1; /* fd for talking PPP */
172 int phase; /* where the link is at */
181 static sigset_t signals_handled;
183 static sigjmp_buf sigjmp;
185 char **script_env; /* Env. variable values for scripts */
186 int s_env_nalloc; /* # words avail at script_env */
188 u_char outpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for outgoing packet */
189 u_char inpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for incoming packet */
191 static int n_children; /* # child processes still running */
192 static int got_sigchld; /* set if we have received a SIGCHLD */
194 int privopen; /* don't lock, open device as root */
196 char *no_ppp_msg = "Sorry - this system lacks PPP kernel support\n";
198 GIDSET_TYPE groups[NGROUPS_MAX];/* groups the user is in */
199 int ngroups; /* How many groups valid in groups */
201 static struct timeval start_time; /* Time when link was started. */
203 static struct pppd_stats old_link_stats;
204 struct pppd_stats link_stats;
205 unsigned link_connect_time;
206 int link_stats_valid;
211 bool bundle_terminating;
214 * We maintain a list of child process pids and
215 * functions to call when they exit.
220 void (*done) __P((void *));
223 struct subprocess *next;
226 static struct subprocess *children;
228 /* Prototypes for procedures local to this file. */
230 static void setup_signals __P((void));
231 static void create_pidfile __P((int pid));
232 static void create_linkpidfile __P((int pid));
233 static void cleanup __P((void));
234 static void get_input __P((void));
235 static void calltimeout __P((void));
236 static struct timeval *timeleft __P((struct timeval *));
237 static void kill_my_pg __P((int));
238 static void hup __P((int));
239 static void term __P((int));
240 static void chld __P((int));
241 static void toggle_debug __P((int));
242 static void open_ccp __P((int));
243 static void bad_signal __P((int));
244 static void holdoff_end __P((void *));
245 static void forget_child __P((int pid, int status));
246 static int reap_kids __P((void));
247 static void childwait_end __P((void *));
250 static void update_db_entry __P((void));
251 static void add_db_key __P((const char *));
252 static void delete_db_key __P((const char *));
253 static void cleanup_db __P((void));
256 static void handle_events __P((void));
257 void print_link_stats __P((void));
259 extern char *getlogin __P((void));
260 int main __P((int, char *[]));
264 #define O_NONBLOCK O_NDELAY
268 #define setlogmask(x)
272 * PPP Data Link Layer "protocol" table.
273 * One entry per supported protocol.
274 * The last entry must be NULL.
276 struct protent *protocols[] = {
307 struct protent *protp;
310 link_stats_valid = 0;
311 new_phase(PHASE_INITIALIZE);
315 /* Initialize syslog facilities */
318 if (gethostname(hostname, MAXNAMELEN) < 0 ) {
319 option_error("Couldn't get hostname: %m");
322 hostname[MAXNAMELEN-1] = 0;
324 /* make sure we don't create world or group writable files. */
325 umask(umask(0777) | 022);
328 privileged = uid == 0;
329 slprintf(numbuf, sizeof(numbuf), "%d", uid);
330 script_setenv("ORIG_UID", numbuf, 0);
332 ngroups = getgroups(NGROUPS_MAX, groups);
335 * Initialize magic number generator now so that protocols may
336 * use magic numbers in initialization.
341 * Initialize each protocol.
343 for (i = 0; (protp = protocols[i]) != NULL; ++i)
347 * Initialize the default channel.
354 * Parse, in order, the system options file, the user's options file,
355 * and the command line arguments.
357 if (!options_from_file(_PATH_SYSOPTIONS, !privileged, 0, 1)
358 || !options_from_user()
359 || !parse_args(argc-1, argv+1))
360 exit(EXIT_OPTION_ERROR);
361 devnam_fixed = 1; /* can no longer change device name */
364 * Work out the device name, if it hasn't already been specified,
365 * and parse the tty's options file.
367 if (the_channel->process_extra_options)
368 (*the_channel->process_extra_options)();
371 setlogmask(LOG_UPTO(LOG_DEBUG));
374 * Check that we are running as root.
376 if (geteuid() != 0) {
377 option_error("must be root to run %s, since it is not setuid-root",
382 if (!ppp_available()) {
383 option_error("%s", no_ppp_msg);
384 exit(EXIT_NO_KERNEL_SUPPORT);
388 * Check that the options given are valid and consistent.
391 if (!sys_check_options())
392 exit(EXIT_OPTION_ERROR);
393 auth_check_options();
394 #ifdef HAVE_MULTILINK
397 for (i = 0; (protp = protocols[i]) != NULL; ++i)
398 if (protp->check_options != NULL)
399 (*protp->check_options)();
400 if (the_channel->check_options)
401 (*the_channel->check_options)();
404 if (dump_options || dryrun) {
405 init_pr_log(NULL, LOG_INFO);
406 print_options(pr_log, NULL);
413 /* Make sure fds 0, 1, 2 are open to somewhere. */
414 fd_devnull = open(_PATH_DEVNULL, O_RDWR);
416 fatal("Couldn't open %s: %m", _PATH_DEVNULL);
417 while (fd_devnull <= 2) {
420 fatal("Critical shortage of file descriptors: dup failed: %m");
425 * Initialize system-dependent stuff.
430 pppdb = tdb_open(_PATH_PPPDB, 0, 0, O_RDWR|O_CREAT, 0644);
432 slprintf(db_key, sizeof(db_key), "pppd%d", getpid());
435 warn("Warning: couldn't open ppp database %s", _PATH_PPPDB);
437 warn("Warning: disabling multilink");
444 * Detach ourselves from the terminal, if required,
445 * and identify who is running us.
447 if (!nodetach && !updetach)
452 if (pw != NULL && pw->pw_name != NULL)
457 syslog(LOG_NOTICE, "pppd %s started by %s, uid %d", VERSION, p, uid);
458 script_setenv("PPPLOGNAME", p, 0);
461 script_setenv("DEVICE", devnam, 1);
462 slprintf(numbuf, sizeof(numbuf), "%d", getpid());
463 script_setenv("PPPD_PID", numbuf, 1);
467 create_linkpidfile(getpid());
472 * If we're doing dial-on-demand, set up the interface now.
476 * Open the loopback channel and set it up to be the ppp interface.
478 fd_loop = open_ppp_loopback();
481 * Configure the interface and mark it up, etc.
490 bundle_terminating = 0;
496 doing_callback = do_callback;
499 if (demand && !doing_callback) {
501 * Don't do anything until we see some activity.
503 new_phase(PHASE_DORMANT);
510 if (get_loop_output())
518 * Now we want to bring up the link.
521 info("Starting link");
524 gettimeofday(&start_time, NULL);
525 script_unsetenv("CONNECT_TIME");
526 script_unsetenv("BYTES_SENT");
527 script_unsetenv("BYTES_RCVD");
529 lcp_open(0); /* Start protocol */
531 while (phase != PHASE_DEAD) {
535 lcp_close(0, "User request");
537 bundle_terminating = 1;
538 if (phase == PHASE_MASTER)
539 mp_bundle_terminated();
542 if (phase == PHASE_NETWORK || phase == PHASE_RUNNING) {
543 ccp_fsm[0].flags = OPT_RESTART; /* clears OPT_SILENT */
544 (*ccp_protent.open)(0);
548 /* restore FSMs to original state */
551 if (!persist || asked_to_quit || (maxfail > 0 && unsuccess >= maxfail))
556 t = need_holdoff? holdoff: 0;
558 t = (*holdoff_hook)();
560 new_phase(PHASE_HOLDOFF);
561 TIMEOUT(holdoff_end, NULL, t);
565 new_phase(PHASE_DORMANT); /* allow signal to end holdoff */
566 } while (phase == PHASE_HOLDOFF);
572 /* Wait for scripts to finish */
574 if (n_children > 0) {
576 TIMEOUT(childwait_end, NULL, child_wait);
578 struct subprocess *chp;
579 dbglog("Waiting for %d child processes...", n_children);
580 for (chp = children; chp != NULL; chp = chp->next)
581 dbglog(" script %s, pid %d", chp->prog, chp->pid);
583 while (n_children > 0 && !childwait_done) {
585 if (kill_link && !childwait_done)
595 * handle_events - wait for something to happen and respond to it.
602 kill_link = open_ccp_flag = 0;
603 if (sigsetjmp(sigjmp, 1) == 0) {
604 sigprocmask(SIG_BLOCK, &signals_handled, NULL);
605 if (got_sighup || got_sigterm || got_sigusr2 || got_sigchld) {
606 sigprocmask(SIG_UNBLOCK, &signals_handled, NULL);
609 sigprocmask(SIG_UNBLOCK, &signals_handled, NULL);
610 wait_input(timeleft(&timo));
616 info("Hangup (SIGHUP)");
619 if (status != EXIT_HANGUP)
620 status = EXIT_USER_REQUEST;
623 info("Terminating on signal %d", got_sigterm);
627 status = EXIT_USER_REQUEST;
632 reap_kids(); /* Don't leave dead kids lying around */
641 * setup_signals - initialize signal handling.
649 * Compute mask of all interesting signals and install signal handlers
650 * for each. Only one signal handler may be active at a time. Therefore,
651 * all other signals should be masked when any handler is executing.
653 sigemptyset(&signals_handled);
654 sigaddset(&signals_handled, SIGHUP);
655 sigaddset(&signals_handled, SIGINT);
656 sigaddset(&signals_handled, SIGTERM);
657 sigaddset(&signals_handled, SIGCHLD);
658 sigaddset(&signals_handled, SIGUSR2);
660 #define SIGNAL(s, handler) do { \
661 sa.sa_handler = handler; \
662 if (sigaction(s, &sa, NULL) < 0) \
663 fatal("Couldn't establish signal handler (%d): %m", s); \
666 sa.sa_mask = signals_handled;
668 SIGNAL(SIGHUP, hup); /* Hangup */
669 SIGNAL(SIGINT, term); /* Interrupt */
670 SIGNAL(SIGTERM, term); /* Terminate */
671 SIGNAL(SIGCHLD, chld);
673 SIGNAL(SIGUSR1, toggle_debug); /* Toggle debug flag */
674 SIGNAL(SIGUSR2, open_ccp); /* Reopen CCP */
677 * Install a handler for other signals which would otherwise
678 * cause pppd to exit without cleaning up.
680 SIGNAL(SIGABRT, bad_signal);
681 SIGNAL(SIGALRM, bad_signal);
682 SIGNAL(SIGFPE, bad_signal);
683 SIGNAL(SIGILL, bad_signal);
684 SIGNAL(SIGPIPE, bad_signal);
685 SIGNAL(SIGQUIT, bad_signal);
686 SIGNAL(SIGSEGV, bad_signal);
688 SIGNAL(SIGBUS, bad_signal);
691 SIGNAL(SIGEMT, bad_signal);
694 SIGNAL(SIGPOLL, bad_signal);
697 SIGNAL(SIGPROF, bad_signal);
700 SIGNAL(SIGSYS, bad_signal);
703 SIGNAL(SIGTRAP, bad_signal);
706 SIGNAL(SIGVTALRM, bad_signal);
709 SIGNAL(SIGXCPU, bad_signal);
712 SIGNAL(SIGXFSZ, bad_signal);
716 * Apparently we can get a SIGPIPE when we call syslog, if
717 * syslogd has died and been restarted. Ignoring it seems
720 signal(SIGPIPE, SIG_IGN);
724 * set_ifunit - do things we need to do once we know which ppp
731 if (req_ifname[0] != '\0')
732 slprintf(ifname, sizeof(ifname), "%s", req_ifname);
734 slprintf(ifname, sizeof(ifname), "%s%d", PPP_DRV_NAME, ifunit);
735 info("Using interface %s", ifname);
736 script_setenv("IFNAME", ifname, iskey);
738 create_pidfile(getpid()); /* write pid to file */
739 create_linkpidfile(getpid());
744 * detach - detach us from the controlling terminal.
755 if (pipe(pipefd) == -1)
756 pipefd[0] = pipefd[1] = -1;
757 if ((pid = fork()) < 0) {
758 error("Couldn't detach (fork failed: %m)");
759 die(1); /* or just return? */
763 notify(pidchange, pid);
764 /* update pid files if they have been written already */
768 create_linkpidfile(pid);
769 exit(0); /* parent dies */
779 slprintf(numbuf, sizeof(numbuf), "%d", getpid());
780 script_setenv("PPPD_PID", numbuf, 1);
782 /* wait for parent to finish updating pid & lock files and die */
784 complete_read(pipefd[0], numbuf, 1);
789 * reopen_log - (re)open our connection to syslog.
794 openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
795 setlogmask(LOG_UPTO(LOG_INFO));
799 * Create a file containing our process ID.
807 slprintf(pidfilename, sizeof(pidfilename), "%s%s.pid",
808 _PATH_VARRUN, ifname);
809 if ((pidfile = fopen(pidfilename, "w")) != NULL) {
810 fprintf(pidfile, "%d\n", pid);
811 (void) fclose(pidfile);
813 error("Failed to create pid file %s: %m", pidfilename);
819 create_linkpidfile(pid)
824 if (linkname[0] == 0)
826 script_setenv("LINKNAME", linkname, 1);
827 slprintf(linkpidfile, sizeof(linkpidfile), "%sppp-%s.pid",
828 _PATH_VARRUN, linkname);
829 if ((pidfile = fopen(linkpidfile, "w")) != NULL) {
830 fprintf(pidfile, "%d\n", pid);
832 fprintf(pidfile, "%s\n", ifname);
833 (void) fclose(pidfile);
835 error("Failed to create pid file %s: %m", linkpidfile);
841 * remove_pidfile - remove our pid files
843 void remove_pidfiles()
845 if (pidfilename[0] != 0 && unlink(pidfilename) < 0 && errno != ENOENT)
846 warn("unable to delete pid file %s: %m", pidfilename);
848 if (linkpidfile[0] != 0 && unlink(linkpidfile) < 0 && errno != ENOENT)
849 warn("unable to delete pid file %s: %m", linkpidfile);
854 * holdoff_end - called via a timeout when the holdoff period ends.
860 new_phase(PHASE_DORMANT);
863 /* List of protocol names, to make our messages a little more informative. */
864 struct protocol_list {
867 } protocol_list[] = {
869 { 0x23, "OSI Network Layer" },
870 { 0x25, "Xerox NS IDP" },
871 { 0x27, "DECnet Phase IV" },
872 { 0x29, "Appletalk" },
873 { 0x2b, "Novell IPX" },
874 { 0x2d, "VJ compressed TCP/IP" },
875 { 0x2f, "VJ uncompressed TCP/IP" },
876 { 0x31, "Bridging PDU" },
877 { 0x33, "Stream Protocol ST-II" },
878 { 0x35, "Banyan Vines" },
879 { 0x39, "AppleTalk EDDP" },
880 { 0x3b, "AppleTalk SmartBuffered" },
881 { 0x3d, "Multi-Link" },
882 { 0x3f, "NETBIOS Framing" },
883 { 0x41, "Cisco Systems" },
884 { 0x43, "Ascom Timeplex" },
885 { 0x45, "Fujitsu Link Backup and Load Balancing (LBLB)" },
886 { 0x47, "DCA Remote Lan" },
887 { 0x49, "Serial Data Transport Protocol (PPP-SDTP)" },
888 { 0x4b, "SNA over 802.2" },
890 { 0x4f, "IP6 Header Compression" },
891 { 0x51, "KNX Bridging Data" },
892 { 0x53, "Encryption" },
893 { 0x55, "Individual Link Encryption" },
895 { 0x59, "PPP Muxing" },
896 { 0x5b, "Vendor-Specific Network Protocol" },
897 { 0x61, "RTP IPHC Full Header" },
898 { 0x63, "RTP IPHC Compressed TCP" },
899 { 0x65, "RTP IPHC Compressed non-TCP" },
900 { 0x67, "RTP IPHC Compressed UDP 8" },
901 { 0x69, "RTP IPHC Compressed RTP 8" },
902 { 0x6f, "Stampede Bridging" },
904 { 0xc1, "NTCITS IPI" },
905 { 0xfb, "single-link compression" },
906 { 0xfd, "Compressed Datagram" },
907 { 0x0201, "802.1d Hello Packets" },
908 { 0x0203, "IBM Source Routing BPDU" },
909 { 0x0205, "DEC LANBridge100 Spanning Tree" },
910 { 0x0207, "Cisco Discovery Protocol" },
911 { 0x0209, "Netcs Twin Routing" },
912 { 0x020b, "STP - Scheduled Transfer Protocol" },
913 { 0x020d, "EDP - Extreme Discovery Protocol" },
914 { 0x0211, "Optical Supervisory Channel Protocol" },
915 { 0x0213, "Optical Supervisory Channel Protocol" },
916 { 0x0231, "Luxcom" },
917 { 0x0233, "Sigma Network Systems" },
918 { 0x0235, "Apple Client Server Protocol" },
919 { 0x0281, "MPLS Unicast" },
920 { 0x0283, "MPLS Multicast" },
921 { 0x0285, "IEEE p1284.4 standard - data packets" },
922 { 0x0287, "ETSI TETRA Network Protocol Type 1" },
923 { 0x0289, "Multichannel Flow Treatment Protocol" },
924 { 0x2063, "RTP IPHC Compressed TCP No Delta" },
925 { 0x2065, "RTP IPHC Context State" },
926 { 0x2067, "RTP IPHC Compressed UDP 16" },
927 { 0x2069, "RTP IPHC Compressed RTP 16" },
928 { 0x4001, "Cray Communications Control Protocol" },
929 { 0x4003, "CDPD Mobile Network Registration Protocol" },
930 { 0x4005, "Expand accelerator protocol" },
931 { 0x4007, "ODSICP NCP" },
932 { 0x4009, "DOCSIS DLL" },
933 { 0x400B, "Cetacean Network Detection Protocol" },
934 { 0x4021, "Stacker LZS" },
935 { 0x4023, "RefTek Protocol" },
936 { 0x4025, "Fibre Channel" },
937 { 0x4027, "EMIT Protocols" },
938 { 0x405b, "Vendor-Specific Protocol (VSP)" },
939 { 0x8021, "Internet Protocol Control Protocol" },
940 { 0x8023, "OSI Network Layer Control Protocol" },
941 { 0x8025, "Xerox NS IDP Control Protocol" },
942 { 0x8027, "DECnet Phase IV Control Protocol" },
943 { 0x8029, "Appletalk Control Protocol" },
944 { 0x802b, "Novell IPX Control Protocol" },
945 { 0x8031, "Bridging NCP" },
946 { 0x8033, "Stream Protocol Control Protocol" },
947 { 0x8035, "Banyan Vines Control Protocol" },
948 { 0x803d, "Multi-Link Control Protocol" },
949 { 0x803f, "NETBIOS Framing Control Protocol" },
950 { 0x8041, "Cisco Systems Control Protocol" },
951 { 0x8043, "Ascom Timeplex" },
952 { 0x8045, "Fujitsu LBLB Control Protocol" },
953 { 0x8047, "DCA Remote Lan Network Control Protocol (RLNCP)" },
954 { 0x8049, "Serial Data Control Protocol (PPP-SDCP)" },
955 { 0x804b, "SNA over 802.2 Control Protocol" },
956 { 0x804d, "SNA Control Protocol" },
957 { 0x804f, "IP6 Header Compression Control Protocol" },
958 { 0x8051, "KNX Bridging Control Protocol" },
959 { 0x8053, "Encryption Control Protocol" },
960 { 0x8055, "Individual Link Encryption Control Protocol" },
961 { 0x8057, "IPv6 Control Protocol" },
962 { 0x8059, "PPP Muxing Control Protocol" },
963 { 0x805b, "Vendor-Specific Network Control Protocol (VSNCP)" },
964 { 0x806f, "Stampede Bridging Control Protocol" },
965 { 0x8073, "MP+ Control Protocol" },
966 { 0x80c1, "NTCITS IPI Control Protocol" },
967 { 0x80fb, "Single Link Compression Control Protocol" },
968 { 0x80fd, "Compression Control Protocol" },
969 { 0x8207, "Cisco Discovery Protocol Control" },
970 { 0x8209, "Netcs Twin Routing" },
971 { 0x820b, "STP - Control Protocol" },
972 { 0x820d, "EDPCP - Extreme Discovery Protocol Ctrl Prtcl" },
973 { 0x8235, "Apple Client Server Protocol Control" },
974 { 0x8281, "MPLSCP" },
975 { 0x8285, "IEEE p1284.4 standard - Protocol Control" },
976 { 0x8287, "ETSI TETRA TNP1 Control Protocol" },
977 { 0x8289, "Multichannel Flow Treatment Protocol" },
978 { 0xc021, "Link Control Protocol" },
979 { 0xc023, "Password Authentication Protocol" },
980 { 0xc025, "Link Quality Report" },
981 { 0xc027, "Shiva Password Authentication Protocol" },
982 { 0xc029, "CallBack Control Protocol (CBCP)" },
983 { 0xc02b, "BACP Bandwidth Allocation Control Protocol" },
985 { 0xc05b, "Vendor-Specific Authentication Protocol (VSAP)" },
986 { 0xc081, "Container Control Protocol" },
987 { 0xc223, "Challenge Handshake Authentication Protocol" },
988 { 0xc225, "RSA Authentication Protocol" },
989 { 0xc227, "Extensible Authentication Protocol" },
990 { 0xc229, "Mitsubishi Security Info Exch Ptcl (SIEP)" },
991 { 0xc26f, "Stampede Bridging Authorization Protocol" },
992 { 0xc281, "Proprietary Authentication Protocol" },
993 { 0xc283, "Proprietary Authentication Protocol" },
994 { 0xc481, "Proprietary Node ID Authentication Protocol" },
999 * protocol_name - find a name for a PPP protocol.
1002 protocol_name(proto)
1005 struct protocol_list *lp;
1007 for (lp = protocol_list; lp->proto != 0; ++lp)
1008 if (proto == lp->proto)
1014 * get_input - called when incoming data is available.
1022 struct protent *protp;
1024 p = inpacket_buf; /* point to beginning of packet buffer */
1026 len = read_packet(inpacket_buf);
1031 if (bundle_eof && multilink_master) {
1032 notice("Last channel has disconnected");
1033 mp_bundle_terminated();
1036 notice("Modem hangup");
1038 status = EXIT_HANGUP;
1039 lcp_lowerdown(0); /* serial link is no longer available */
1044 if (len < PPP_HDRLEN) {
1045 dbglog("received short packet:%.*B", len, p);
1049 dump_packet("rcvd", p, len);
1050 if (snoop_recv_hook) snoop_recv_hook(p, len);
1052 p += 2; /* Skip address and control */
1053 GETSHORT(protocol, p);
1057 * Toss all non-LCP packets unless LCP is OPEN.
1059 if (protocol != PPP_LCP && lcp_fsm[0].state != OPENED) {
1060 dbglog("Discarded non-LCP packet when LCP not open");
1065 * Until we get past the authentication phase, toss all packets
1066 * except LCP, LQR and authentication packets.
1068 if (phase <= PHASE_AUTHENTICATE
1069 && !(protocol == PPP_LCP || protocol == PPP_LQR
1070 || protocol == PPP_PAP || protocol == PPP_CHAP ||
1071 protocol == PPP_EAP)) {
1072 dbglog("discarding proto 0x%x in phase %d",
1078 * Upcall the proper protocol input routine.
1080 for (i = 0; (protp = protocols[i]) != NULL; ++i) {
1081 if (protp->protocol == protocol && protp->enabled_flag) {
1082 (*protp->input)(0, p, len);
1085 if (protocol == (protp->protocol & ~0x8000) && protp->enabled_flag
1086 && protp->datainput != NULL) {
1087 (*protp->datainput)(0, p, len);
1093 const char *pname = protocol_name(protocol);
1095 warn("Unsupported protocol '%s' (0x%x) received", pname, protocol);
1097 warn("Unsupported protocol 0x%x received", protocol);
1099 lcp_sprotrej(0, p - PPP_HDRLEN, len + PPP_HDRLEN);
1103 * ppp_send_config - configure the transmit-side characteristics of
1104 * the ppp interface. Returns -1, indicating an error, if the channel
1105 * send_config procedure called error() (or incremented error_count
1106 * itself), otherwise 0.
1109 ppp_send_config(unit, mtu, accm, pcomp, accomp)
1116 if (the_channel->send_config == NULL)
1119 (*the_channel->send_config)(mtu, accm, pcomp, accomp);
1120 return (error_count != errs)? -1: 0;
1124 * ppp_recv_config - configure the receive-side characteristics of
1125 * the ppp interface. Returns -1, indicating an error, if the channel
1126 * recv_config procedure called error() (or incremented error_count
1127 * itself), otherwise 0.
1130 ppp_recv_config(unit, mru, accm, pcomp, accomp)
1137 if (the_channel->recv_config == NULL)
1140 (*the_channel->recv_config)(mru, accm, pcomp, accomp);
1141 return (error_count != errs)? -1: 0;
1145 * new_phase - signal the start of a new phase of pppd's operation.
1153 (*new_phase_hook)(p);
1154 notify(phasechange, p);
1158 * die - clean up state and exit with the specified status.
1164 if (!doing_multilink || multilink_master)
1167 notify(exitnotify, status);
1168 syslog(LOG_INFO, "Exit.");
1173 * cleanup - restore anything which needs to be restored before we exit
1182 the_channel->disestablish_ppp(devfd);
1183 if (the_channel->cleanup)
1184 (*the_channel->cleanup)();
1198 * Print connect time and statistics.
1200 if (link_stats_valid) {
1201 int t = (link_connect_time + 5) / 6; /* 1/10ths of minutes */
1202 info("Connect time %d.%d minutes.", t/10, t%10);
1203 info("Sent %u bytes, received %u bytes.",
1204 link_stats.bytes_out, link_stats.bytes_in);
1205 link_stats_valid = 0;
1210 * reset_link_stats - "reset" stats when link goes up.
1216 if (!get_ppp_stats(u, &old_link_stats))
1218 gettimeofday(&start_time, NULL);
1222 * update_link_stats - get stats at link termination.
1225 update_link_stats(u)
1231 if (!get_ppp_stats(u, &link_stats)
1232 || gettimeofday(&now, NULL) < 0)
1234 link_connect_time = now.tv_sec - start_time.tv_sec;
1235 link_stats_valid = 1;
1237 link_stats.bytes_in -= old_link_stats.bytes_in;
1238 link_stats.bytes_out -= old_link_stats.bytes_out;
1239 link_stats.pkts_in -= old_link_stats.pkts_in;
1240 link_stats.pkts_out -= old_link_stats.pkts_out;
1242 slprintf(numbuf, sizeof(numbuf), "%u", link_connect_time);
1243 script_setenv("CONNECT_TIME", numbuf, 0);
1244 slprintf(numbuf, sizeof(numbuf), "%u", link_stats.bytes_out);
1245 script_setenv("BYTES_SENT", numbuf, 0);
1246 slprintf(numbuf, sizeof(numbuf), "%u", link_stats.bytes_in);
1247 script_setenv("BYTES_RCVD", numbuf, 0);
1252 struct timeval c_time; /* time at which to call routine */
1253 void *c_arg; /* argument to routine */
1254 void (*c_func) __P((void *)); /* routine */
1255 struct callout *c_next;
1258 static struct callout *callout = NULL; /* Callout list */
1259 static struct timeval timenow; /* Current time */
1262 * timeout - Schedule a timeout.
1265 timeout(func, arg, secs, usecs)
1266 void (*func) __P((void *));
1270 struct callout *newp, *p, **pp;
1275 if ((newp = (struct callout *) malloc(sizeof(struct callout))) == NULL)
1276 fatal("Out of memory in timeout()!");
1278 newp->c_func = func;
1279 gettimeofday(&timenow, NULL);
1280 newp->c_time.tv_sec = timenow.tv_sec + secs;
1281 newp->c_time.tv_usec = timenow.tv_usec + usecs;
1282 if (newp->c_time.tv_usec >= 1000000) {
1283 newp->c_time.tv_sec += newp->c_time.tv_usec / 1000000;
1284 newp->c_time.tv_usec %= 1000000;
1288 * Find correct place and link it in.
1290 for (pp = &callout; (p = *pp); pp = &p->c_next)
1291 if (newp->c_time.tv_sec < p->c_time.tv_sec
1292 || (newp->c_time.tv_sec == p->c_time.tv_sec
1293 && newp->c_time.tv_usec < p->c_time.tv_usec))
1301 * untimeout - Unschedule a timeout.
1304 untimeout(func, arg)
1305 void (*func) __P((void *));
1308 struct callout **copp, *freep;
1311 * Find first matching timeout and remove it from the list.
1313 for (copp = &callout; (freep = *copp); copp = &freep->c_next)
1314 if (freep->c_func == func && freep->c_arg == arg) {
1315 *copp = freep->c_next;
1316 free((char *) freep);
1323 * calltimeout - Call any timeout routines which are now due.
1330 while (callout != NULL) {
1333 if (gettimeofday(&timenow, NULL) < 0)
1334 fatal("Failed to get time of day: %m");
1335 if (!(p->c_time.tv_sec < timenow.tv_sec
1336 || (p->c_time.tv_sec == timenow.tv_sec
1337 && p->c_time.tv_usec <= timenow.tv_usec)))
1338 break; /* no, it's not time yet */
1340 callout = p->c_next;
1341 (*p->c_func)(p->c_arg);
1349 * timeleft - return the length of time until the next timeout is due.
1351 static struct timeval *
1353 struct timeval *tvp;
1355 if (callout == NULL)
1358 gettimeofday(&timenow, NULL);
1359 tvp->tv_sec = callout->c_time.tv_sec - timenow.tv_sec;
1360 tvp->tv_usec = callout->c_time.tv_usec - timenow.tv_usec;
1361 if (tvp->tv_usec < 0) {
1362 tvp->tv_usec += 1000000;
1365 if (tvp->tv_sec < 0)
1366 tvp->tv_sec = tvp->tv_usec = 0;
1373 * kill_my_pg - send a signal to our process group, and ignore it ourselves.
1374 * We assume that sig is currently blocked.
1380 struct sigaction act, oldact;
1381 struct subprocess *chp;
1385 * There might be other things in our process group that we
1386 * didn't start that would get hit if we did a kill(0), so
1387 * just send the signal individually to our children.
1389 for (chp = children; chp != NULL; chp = chp->next)
1391 kill(chp->pid, sig);
1395 /* We've done a setsid(), so we can just use a kill(0) */
1396 sigemptyset(&act.sa_mask); /* unnecessary in fact */
1397 act.sa_handler = SIG_IGN;
1401 * The kill() above made the signal pending for us, as well as
1402 * the rest of our process group, but we don't want it delivered
1403 * to us. It is blocked at the moment. Setting it to be ignored
1404 * will cause the pending signal to be discarded. If we did the
1405 * kill() after setting the signal to be ignored, it is unspecified
1406 * (by POSIX) whether the signal is immediately discarded or left
1407 * pending, and in fact Linux would leave it pending, and so it
1408 * would be delivered after the current signal handler exits,
1409 * leading to an infinite loop.
1411 sigaction(sig, &act, &oldact);
1412 sigaction(sig, &oldact, NULL);
1417 * hup - Catch SIGHUP signal.
1419 * Indicates that the physical layer has been disconnected.
1420 * We don't rely on this indication; if the user has sent this
1421 * signal, we just take the link down.
1427 /* can't log a message here, it can deadlock */
1430 /* Send the signal to the [dis]connector process(es) also */
1432 notify(sigreceived, sig);
1434 siglongjmp(sigjmp, 1);
1439 * term - Catch SIGTERM signal and SIGINT signal (^C/del).
1441 * Indicates that we should initiate a graceful disconnect and exit.
1448 /* can't log a message here, it can deadlock */
1451 /* Send the signal to the [dis]connector process(es) also */
1453 notify(sigreceived, sig);
1455 siglongjmp(sigjmp, 1);
1460 * chld - Catch SIGCHLD signal.
1461 * Sets a flag so we will call reap_kids in the mainline.
1469 siglongjmp(sigjmp, 1);
1474 * toggle_debug - Catch SIGUSR1 signal.
1476 * Toggle debug flag.
1485 setlogmask(LOG_UPTO(LOG_DEBUG));
1487 setlogmask(LOG_UPTO(LOG_WARNING));
1493 * open_ccp - Catch SIGUSR2 signal.
1495 * Try to (re)negotiate compression.
1504 siglongjmp(sigjmp, 1);
1509 * bad_signal - We've caught a fatal signal. Clean up state and exit.
1515 static int crashed = 0;
1520 error("Fatal signal %d", sig);
1522 kill_my_pg(SIGTERM);
1523 notify(sigreceived, sig);
1528 * safe_fork - Create a child process. The child closes all the
1529 * file descriptors that we don't want to leak to a script.
1530 * The parent waits for the child to do this before returning.
1531 * This also arranges for the specified fds to be dup'd to
1532 * fds 0, 1, 2 in the child.
1535 safe_fork(int infd, int outfd, int errfd)
1541 /* make sure fds 0, 1, 2 are occupied (probably not necessary) */
1542 while ((fd = dup(fd_devnull)) >= 0) {
1549 if (pipe(pipefd) == -1)
1550 pipefd[0] = pipefd[1] = -1;
1553 error("fork failed: %m");
1559 /* this read() blocks until the close(pipefd[1]) below */
1560 complete_read(pipefd[0], buf, 1);
1565 /* Executing in the child */
1571 /* make sure infd, outfd and errfd won't get tromped on below */
1572 if (infd == 1 || infd == 2)
1574 if (outfd == 0 || outfd == 2)
1576 if (errfd == 0 || errfd == 1)
1581 /* dup the in, out, err fds to 0, 1, 2 */
1591 if (the_channel->close)
1592 (*the_channel->close)();
1594 close(devfd); /* some plugins don't have a close function */
1604 notify(fork_notifier, 0);
1606 /* this close unblocks the read() call above in the parent */
1613 add_script_env(pos, newstring)
1617 if (pos + 1 >= s_env_nalloc) {
1618 int new_n = pos + 17;
1619 char **newenv = realloc(script_env, new_n * sizeof(char *));
1620 if (newenv == NULL) {
1621 free(newstring - 1);
1624 script_env = newenv;
1625 s_env_nalloc = new_n;
1627 script_env[pos] = newstring;
1628 script_env[pos + 1] = NULL;
1633 remove_script_env(pos)
1636 free(script_env[pos] - 1);
1637 while ((script_env[pos] = script_env[pos + 1]) != NULL)
1642 * update_system_environment - process the list of set/unset options
1643 * and update the system environment.
1646 update_system_environment()
1648 struct userenv *uep;
1650 for (uep = userenv_list; uep != NULL; uep = uep->ue_next) {
1652 setenv(uep->ue_name, uep->ue_value, 1);
1654 unsetenv(uep->ue_name);
1659 * device_script - run a program to talk to the specified fds
1660 * (e.g. to run the connector or disconnector script).
1661 * stderr gets connected to the log fd or to the _PATH_CONNERRS file.
1664 device_script(program, in, out, dont_wait)
1676 errfd = open(_PATH_CONNERRS, O_WRONLY | O_APPEND | O_CREAT, 0600);
1679 pid = safe_fork(in, out, errfd);
1681 if (pid != 0 && log_to_fd < 0)
1686 error("Failed to create child process: %m");
1691 record_child(pid, program, NULL, NULL, 1);
1694 while (waitpid(pid, &status, 0) < 0) {
1697 fatal("error waiting for (dis)connection process: %m");
1699 forget_child(pid, status);
1702 return (status == 0 ? 0 : -1);
1705 /* here we are executing in the child */
1709 if (getuid() != uid) {
1710 fprintf(stderr, "pppd: setuid failed\n");
1713 update_system_environment();
1714 execl("/bin/sh", "sh", "-c", program, (char *)0);
1715 perror("pppd: could not exec /bin/sh");
1722 * update_script_environment - process the list of set/unset options
1723 * and update the script environment. Note that we intentionally do
1724 * not update the TDB. These changes are layered on top right before
1725 * exec. It is not possible to use script_setenv() or
1726 * script_unsetenv() safely after this routine is run.
1729 update_script_environment()
1731 struct userenv *uep;
1733 for (uep = userenv_list; uep != NULL; uep = uep->ue_next) {
1735 char *p, *newstring;
1736 int nlen = strlen(uep->ue_name);
1738 for (i = 0; (p = script_env[i]) != NULL; i++) {
1739 if (strncmp(p, uep->ue_name, nlen) == 0 && p[nlen] == '=')
1742 if (uep->ue_isset) {
1743 nlen += strlen(uep->ue_value) + 2;
1744 newstring = malloc(nlen + 1);
1745 if (newstring == NULL)
1748 slprintf(newstring, nlen, "%s=%s", uep->ue_name, uep->ue_value);
1750 script_env[i] = newstring;
1752 add_script_env(i, newstring);
1753 } else if (p != NULL) {
1754 remove_script_env(i);
1760 * run_program - execute a program with given arguments,
1761 * but don't wait for it unless wait is non-zero.
1762 * If the program can't be executed, logs an error unless
1763 * must_exist is 0 and the program file doesn't exist.
1764 * Returns -1 if it couldn't fork, 0 if the file doesn't exist
1765 * or isn't an executable plain file, or the process ID of the child.
1766 * If done != NULL, (*done)(arg) will be called later (within
1767 * reap_kids) iff the return value is > 0.
1770 run_program(prog, args, must_exist, done, arg, wait)
1774 void (*done) __P((void *));
1782 * First check if the file exists and is executable.
1783 * We don't use access() because that would use the
1784 * real user-id, which might not be root, and the script
1785 * might be accessible only to root.
1788 if (stat(prog, &sbuf) < 0 || !S_ISREG(sbuf.st_mode)
1789 || (sbuf.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH)) == 0) {
1790 if (must_exist || errno != ENOENT)
1791 warn("Can't execute %s: %m", prog);
1795 pid = safe_fork(fd_devnull, fd_devnull, fd_devnull);
1797 error("Failed to create child process for %s: %m", prog);
1802 dbglog("Script %s started (pid %d)", prog, pid);
1803 record_child(pid, prog, done, arg, 0);
1805 while (waitpid(pid, &status, 0) < 0) {
1808 fatal("error waiting for script %s: %m", prog);
1810 forget_child(pid, status);
1815 /* Leave the current location */
1816 (void) setsid(); /* No controlling tty. */
1817 (void) umask (S_IRWXG|S_IRWXO);
1818 (void) chdir ("/"); /* no current directory. */
1819 setuid(0); /* set real UID = root */
1823 /* Force the priority back to zero if pppd is running higher. */
1824 if (setpriority (PRIO_PROCESS, 0, 0) < 0)
1825 warn("can't reset priority to 0: %m");
1828 /* run the program */
1829 update_script_environment();
1830 execve(prog, args, script_env);
1831 if (must_exist || errno != ENOENT) {
1832 /* have to reopen the log, there's nowhere else
1833 for the message to go. */
1835 syslog(LOG_ERR, "Can't execute %s: %m", prog);
1843 * record_child - add a child process to the list for reap_kids
1847 record_child(pid, prog, done, arg, killable)
1850 void (*done) __P((void *));
1854 struct subprocess *chp;
1858 chp = (struct subprocess *) malloc(sizeof(struct subprocess));
1860 warn("losing track of %s process", prog);
1866 chp->next = children;
1867 chp->killable = killable;
1873 * childwait_end - we got fed up waiting for the child processes to
1874 * exit, send them all a SIGTERM.
1880 struct subprocess *chp;
1882 for (chp = children; chp != NULL; chp = chp->next) {
1884 dbglog("sending SIGTERM to process %d", chp->pid);
1885 kill(chp->pid, SIGTERM);
1891 * forget_child - clean up after a dead child
1894 forget_child(pid, status)
1897 struct subprocess *chp, **prevp;
1899 for (prevp = &children; (chp = *prevp) != NULL; prevp = &chp->next) {
1900 if (chp->pid == pid) {
1906 if (WIFSIGNALED(status)) {
1907 warn("Child process %s (pid %d) terminated with signal %d",
1908 (chp? chp->prog: "??"), pid, WTERMSIG(status));
1910 dbglog("Script %s finished (pid %d), status = 0x%x",
1911 (chp? chp->prog: "??"), pid,
1912 WIFEXITED(status) ? WEXITSTATUS(status) : status);
1913 if (chp && chp->done)
1914 (*chp->done)(chp->arg);
1920 * reap_kids - get status from any dead child processes,
1921 * and log a message for abnormal terminations.
1928 if (n_children == 0)
1930 while ((pid = waitpid(-1, &status, WNOHANG)) != -1 && pid != 0) {
1931 forget_child(pid, status);
1934 if (errno == ECHILD)
1937 error("Error waiting for child process: %m");
1943 * add_notifier - add a new function to be called when something happens.
1946 add_notifier(notif, func, arg)
1947 struct notifier **notif;
1951 struct notifier *np;
1953 np = malloc(sizeof(struct notifier));
1955 novm("notifier struct");
1963 * remove_notifier - remove a function from the list of things to
1964 * be called when something happens.
1967 remove_notifier(notif, func, arg)
1968 struct notifier **notif;
1972 struct notifier *np;
1974 for (; (np = *notif) != 0; notif = &np->next) {
1975 if (np->func == func && np->arg == arg) {
1984 * notify - call a set of functions registered with add_notifier.
1988 struct notifier *notif;
1991 struct notifier *np;
1993 while ((np = notif) != 0) {
1995 (*np->func)(np->arg, val);
2000 * novm - log an error message saying we ran out of memory, and die.
2006 fatal("Virtual memory exhausted allocating %s\n", msg);
2010 * script_setenv - set an environment variable value to be used
2011 * for scripts that we run (e.g. ip-up, auth-up, etc.)
2014 script_setenv(var, value, iskey)
2018 size_t varl = strlen(var);
2019 size_t vl = varl + strlen(value) + 2;
2021 char *p, *newstring;
2023 newstring = (char *) malloc(vl+1);
2026 *newstring++ = iskey;
2027 slprintf(newstring, vl, "%s=%s", var, value);
2029 /* check if this variable is already set */
2030 if (script_env != 0) {
2031 for (i = 0; (p = script_env[i]) != 0; ++i) {
2032 if (strncmp(p, var, varl) == 0 && p[varl] == '=') {
2034 if (p[-1] && pppdb != NULL)
2038 script_env[i] = newstring;
2040 if (pppdb != NULL) {
2042 add_db_key(newstring);
2050 /* no space allocated for script env. ptrs. yet */
2052 script_env = malloc(16 * sizeof(char *));
2053 if (script_env == 0) {
2054 free(newstring - 1);
2060 if (!add_script_env(i, newstring))
2064 if (pppdb != NULL) {
2066 add_db_key(newstring);
2073 * script_unsetenv - remove a variable from the environment
2077 script_unsetenv(var)
2080 int vl = strlen(var);
2084 if (script_env == 0)
2086 for (i = 0; (p = script_env[i]) != 0; ++i) {
2087 if (strncmp(p, var, vl) == 0 && p[vl] == '=') {
2089 if (p[-1] && pppdb != NULL)
2092 remove_script_env(i);
2103 * Any arbitrary string used as a key for locking the database.
2104 * It doesn't matter what it is as long as all pppds use the same string.
2106 #define PPPD_LOCK_KEY "pppd lock"
2109 * lock_db - get an exclusive lock on the TDB database.
2110 * Used to ensure atomicity of various lookup/modify operations.
2117 key.dptr = PPPD_LOCK_KEY;
2118 key.dsize = strlen(key.dptr);
2119 tdb_chainlock(pppdb, key);
2124 * unlock_db - remove the exclusive lock obtained by lock_db.
2131 key.dptr = PPPD_LOCK_KEY;
2132 key.dsize = strlen(key.dptr);
2133 tdb_chainunlock(pppdb, key);
2139 * update_db_entry - update our entry in the database.
2148 if (script_env == NULL)
2151 for (i = 0; (p = script_env[i]) != 0; ++i)
2152 vlen += strlen(p) + 1;
2153 vbuf = malloc(vlen + 1);
2155 novm("database entry");
2157 for (i = 0; (p = script_env[i]) != 0; ++i)
2158 q += slprintf(q, vbuf + vlen - q, "%s;", p);
2161 key.dsize = strlen(db_key);
2164 if (tdb_store(pppdb, key, dbuf, TDB_REPLACE))
2165 error("tdb_store failed: %s", tdb_errorstr(pppdb));
2173 * add_db_key - add a key that we can use to look up our database entry.
2181 key.dptr = (char *) str;
2182 key.dsize = strlen(str);
2184 dbuf.dsize = strlen(db_key);
2185 if (tdb_store(pppdb, key, dbuf, TDB_REPLACE))
2186 error("tdb_store key failed: %s", tdb_errorstr(pppdb));
2190 * delete_db_key - delete a key for looking up our database entry.
2198 key.dptr = (char *) str;
2199 key.dsize = strlen(str);
2200 tdb_delete(pppdb, key);
2204 * cleanup_db - delete all the entries we put in the database.
2214 key.dsize = strlen(db_key);
2215 tdb_delete(pppdb, key);
2216 for (i = 0; (p = script_env[i]) != 0; ++i)
2220 #endif /* USE_TDB */