2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/param.h>
30 #include <sys/socket.h>
31 #include <netinet/in.h>
33 #include <net/if_tun.h> /* For TUNS* ioctls */
34 #include <net/route.h>
35 #include <netinet/in_systm.h>
36 #include <netinet/ip.h>
66 #include "throughput.h"
67 #include "slcompress.h"
72 #include "descriptor.h"
101 #define SCATTER_SEGMENTS 7 /* version, datalink, name, physical,
102 throughput, throughput, device */
104 #define SEND_MAXFD 3 /* Max file descriptors passed through
105 the local domain socket */
107 static int bundle_RemainingIdleTime(struct bundle *);
109 static const char * const PhaseNames[] = {
110 "Dead", "Establish", "Authenticate", "Network", "Terminate"
114 bundle_PhaseName(struct bundle *bundle)
116 return bundle->phase <= PHASE_TERMINATE ?
117 PhaseNames[bundle->phase] : "unknown";
121 bundle_NewPhase(struct bundle *bundle, u_int new)
123 if (new == bundle->phase)
126 if (new <= PHASE_TERMINATE)
127 log_Printf(LogPHASE, "bundle: %s\n", PhaseNames[new]);
133 MPPE_MasterKeyValid = 0;
135 log_DisplayPrompts();
138 case PHASE_ESTABLISH:
142 case PHASE_AUTHENTICATE:
144 log_DisplayPrompts();
148 if (ncp_fsmStart(&bundle->ncp, bundle)) {
150 log_DisplayPrompts();
152 log_Printf(LogPHASE, "bundle: All NCPs are disabled\n");
153 bundle_Close(bundle, NULL, CLOSE_STAYDOWN);
157 case PHASE_TERMINATE:
159 mp_Down(&bundle->ncp.mp);
160 log_DisplayPrompts();
166 bundle_LayerStart(void *v, struct fsm *fp)
168 /* The given FSM is about to start up ! */
173 bundle_Notify(struct bundle *bundle, char c)
175 if (bundle->notify.fd != -1) {
178 ret = write(bundle->notify.fd, &c, 1);
179 if (c != EX_REDIAL && c != EX_RECONNECT) {
181 log_Printf(LogCHAT, "Parent notified of %s\n",
182 c == EX_NORMAL ? "success" : "failure");
184 log_Printf(LogERROR, "Failed to notify parent of success\n");
185 close(bundle->notify.fd);
186 bundle->notify.fd = -1;
188 log_Printf(LogCHAT, "Parent notified of %s\n", ex_desc(c));
190 log_Printf(LogERROR, "Failed to notify parent of %s\n", ex_desc(c));
195 bundle_ClearQueues(void *v)
197 struct bundle *bundle = (struct bundle *)v;
200 log_Printf(LogPHASE, "Clearing choked output queue\n");
201 timer_Stop(&bundle->choked.timer);
206 * We've had a full queue for PACKET_DEL_SECS seconds without being
207 * able to get rid of any of the packets. We've probably given up
208 * on the redials at this point, and the queued data has almost
209 * definitely been timed out by the layer above. As this is preventing
210 * us from reading the TUN_NAME device (we don't want to buffer stuff
211 * indefinitely), we may as well nuke this data and start with a clean
214 * Unfortunately, this has the side effect of shafting any compression
215 * dictionaries in use (causing the relevant RESET_REQ/RESET_ACK).
218 ncp_DeleteQueues(&bundle->ncp);
219 for (dl = bundle->links; dl; dl = dl->next)
220 physical_DeleteQueue(dl->physical);
224 bundle_LinkAdded(struct bundle *bundle, struct datalink *dl)
226 bundle->phys_type.all |= dl->physical->type;
227 if (dl->state == DATALINK_OPEN)
228 bundle->phys_type.open |= dl->physical->type;
231 if ((bundle->phys_type.open & (PHYS_DEDICATED|PHYS_DDIAL))
232 != bundle->phys_type.open && bundle->session.timer.state == TIMER_STOPPED)
233 if (bundle->radius.sessiontime)
234 bundle_StartSessionTimer(bundle, 0);
237 if ((bundle->phys_type.open & (PHYS_DEDICATED|PHYS_DDIAL))
238 != bundle->phys_type.open && bundle->idle.timer.state == TIMER_STOPPED)
239 /* We may need to start our idle timer */
240 bundle_StartIdleTimer(bundle, 0);
244 bundle_LinksRemoved(struct bundle *bundle)
248 bundle->phys_type.all = bundle->phys_type.open = 0;
249 for (dl = bundle->links; dl; dl = dl->next)
250 bundle_LinkAdded(bundle, dl);
252 bundle_CalculateBandwidth(bundle);
253 mp_CheckAutoloadTimer(&bundle->ncp.mp);
255 if ((bundle->phys_type.open & (PHYS_DEDICATED|PHYS_DDIAL))
256 == bundle->phys_type.open) {
258 if (bundle->radius.sessiontime)
259 bundle_StopSessionTimer(bundle);
261 bundle_StopIdleTimer(bundle);
266 bundle_LayerUp(void *v, struct fsm *fp)
269 * The given fsm is now up
270 * If it's an LCP, adjust our phys_mode.open value and check the
272 * If it's the first NCP, calculate our bandwidth
273 * If it's the first NCP, set our ``upat'' time
274 * If it's the first NCP, start the idle timer.
275 * If it's an NCP, tell our -background parent to go away.
276 * If it's the first NCP, start the autoload timer
278 struct bundle *bundle = (struct bundle *)v;
280 if (fp->proto == PROTO_LCP) {
281 struct physical *p = link2physical(fp->link);
283 bundle_LinkAdded(bundle, p->dl);
284 mp_CheckAutoloadTimer(&bundle->ncp.mp);
285 } else if (isncp(fp->proto)) {
286 if (ncp_LayersOpen(&fp->bundle->ncp) == 1) {
287 bundle_CalculateBandwidth(fp->bundle);
290 if (bundle->radius.sessiontime)
291 bundle_StartSessionTimer(bundle, 0);
293 bundle_StartIdleTimer(bundle, 0);
294 mp_CheckAutoloadTimer(&fp->bundle->ncp.mp);
296 bundle_Notify(bundle, EX_NORMAL);
297 } else if (fp->proto == PROTO_CCP)
298 bundle_CalculateBandwidth(fp->bundle); /* Against ccp_MTUOverhead */
302 bundle_LayerDown(void *v, struct fsm *fp)
305 * The given FSM has been told to come down.
306 * If it's our last NCP, stop the idle timer.
307 * If it's our last NCP, clear our ``upat'' value.
308 * If it's our last NCP, stop the autoload timer
309 * If it's an LCP, adjust our phys_type.open value and any timers.
310 * If it's an LCP and we're in multilink mode, adjust our tun
311 * If it's the last LCP, down all NCPs
312 * speed and make sure our minimum sequence number is adjusted.
315 struct bundle *bundle = (struct bundle *)v;
317 if (isncp(fp->proto)) {
318 if (ncp_LayersOpen(&fp->bundle->ncp) == 0) {
320 if (bundle->radius.sessiontime)
321 bundle_StopSessionTimer(bundle);
323 bundle_StopIdleTimer(bundle);
325 mp_StopAutoloadTimer(&bundle->ncp.mp);
327 } else if (fp->proto == PROTO_LCP) {
329 struct datalink *lost;
332 bundle_LinksRemoved(bundle); /* adjust timers & phys_type values */
336 for (dl = bundle->links; dl; dl = dl->next) {
337 if (fp == &dl->physical->link.lcp.fsm)
339 else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP)
343 if (bundle->ncp.mp.active) {
344 bundle_CalculateBandwidth(bundle);
347 mp_LinkLost(&bundle->ncp.mp, lost);
349 log_Printf(LogALERT, "Oops, lost an unrecognised datalink (%s) !\n",
353 if (!others_active) {
354 /* Down the NCPs. We don't expect to get fsm_Close()d ourself ! */
355 ncp2initial(&bundle->ncp);
356 mp_Down(&bundle->ncp.mp);
362 bundle_LayerFinish(void *v, struct fsm *fp)
364 /* The given fsm is now down (fp cannot be NULL)
366 * If it's the last NCP, fsm_Close all LCPs
367 * If it's the last NCP, bring any MP layer down
370 struct bundle *bundle = (struct bundle *)v;
373 if (isncp(fp->proto) && !ncp_LayersUnfinished(&bundle->ncp)) {
374 if (bundle_Phase(bundle) != PHASE_DEAD)
375 bundle_NewPhase(bundle, PHASE_TERMINATE);
376 for (dl = bundle->links; dl; dl = dl->next)
377 if (dl->state == DATALINK_OPEN)
378 datalink_Close(dl, CLOSE_STAYDOWN);
380 mp_Down(&bundle->ncp.mp);
385 bundle_Close(struct bundle *bundle, const char *name, int how)
388 * Please close the given datalink.
389 * If name == NULL or name is the last datalink, fsm_Close all NCPs
391 * If it isn't the last datalink, just Close that datalink.
394 struct datalink *dl, *this_dl;
400 for (dl = bundle->links; dl; dl = dl->next) {
401 if (name && !strcasecmp(name, dl->name))
403 if (name == NULL || this_dl == dl) {
406 datalink_DontHangup(dl);
409 datalink_StayDown(dl);
412 } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP)
416 if (name && this_dl == NULL) {
417 log_Printf(LogWARN, "%s: Invalid datalink name\n", name);
421 if (!others_active) {
423 if (bundle->radius.sessiontime)
424 bundle_StopSessionTimer(bundle);
426 bundle_StopIdleTimer(bundle);
427 if (ncp_LayersUnfinished(&bundle->ncp))
428 ncp_Close(&bundle->ncp);
430 ncp2initial(&bundle->ncp);
431 mp_Down(&bundle->ncp.mp);
432 for (dl = bundle->links; dl; dl = dl->next)
433 datalink_Close(dl, how);
435 } else if (this_dl && this_dl->state != DATALINK_CLOSED &&
436 this_dl->state != DATALINK_HANGUP)
437 datalink_Close(this_dl, how);
441 bundle_Down(struct bundle *bundle, int how)
445 for (dl = bundle->links; dl; dl = dl->next)
446 datalink_Down(dl, how);
450 bundle_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n)
452 struct bundle *bundle = descriptor2bundle(d);
460 /* If there are aren't many packets queued, look for some more. */
461 for (nlinks = 0, dl = bundle->links; dl; dl = dl->next)
465 queued = r ? ncp_FillPhysicalQueues(&bundle->ncp, bundle) :
466 ncp_QueueLen(&bundle->ncp);
468 if (r && (bundle->phase == PHASE_NETWORK ||
469 bundle->phys_type.all & PHYS_AUTO)) {
470 /* enough surplus so that we can tell if we're getting swamped */
471 ifqueue = nlinks > bundle->cfg.ifqueue ? nlinks : bundle->cfg.ifqueue;
472 if (queued < ifqueue) {
473 /* Not enough - select() for more */
474 if (bundle->choked.timer.state == TIMER_RUNNING)
475 timer_Stop(&bundle->choked.timer); /* Not needed any more */
476 FD_SET(bundle->dev.fd, r);
477 if (*n < bundle->dev.fd + 1)
478 *n = bundle->dev.fd + 1;
479 log_Printf(LogTIMER, "%s: fdset(r) %d\n", TUN_NAME, bundle->dev.fd);
481 } else if (bundle->choked.timer.state == TIMER_STOPPED) {
482 bundle->choked.timer.func = bundle_ClearQueues;
483 bundle->choked.timer.name = "output choke";
484 bundle->choked.timer.load = bundle->cfg.choked.timeout * SECTICKS;
485 bundle->choked.timer.arg = bundle;
486 timer_Start(&bundle->choked.timer);
492 result += descriptor_UpdateSet(&bundle->radius.desc, r, w, e, n);
495 /* Which links need a select() ? */
496 for (dl = bundle->links; dl; dl = dl->next)
497 result += descriptor_UpdateSet(&dl->desc, r, w, e, n);
500 * This *MUST* be called after the datalink UpdateSet()s as it
501 * might be ``holding'' one of the datalinks (death-row) and
502 * wants to be able to de-select() it from the descriptor set.
504 result += descriptor_UpdateSet(&bundle->ncp.mp.server.desc, r, w, e, n);
510 bundle_IsSet(struct fdescriptor *d, const fd_set *fdset)
512 struct bundle *bundle = descriptor2bundle(d);
515 for (dl = bundle->links; dl; dl = dl->next)
516 if (descriptor_IsSet(&dl->desc, fdset))
520 if (descriptor_IsSet(&bundle->radius.desc, fdset))
524 if (descriptor_IsSet(&bundle->ncp.mp.server.desc, fdset))
527 return FD_ISSET(bundle->dev.fd, fdset);
531 bundle_DescriptorRead(struct fdescriptor *d, struct bundle *bundle,
538 if (descriptor_IsSet(&bundle->ncp.mp.server.desc, fdset))
539 descriptor_Read(&bundle->ncp.mp.server.desc, bundle, fdset);
541 for (dl = bundle->links; dl; dl = dl->next)
542 if (descriptor_IsSet(&dl->desc, fdset))
543 descriptor_Read(&dl->desc, bundle, fdset);
546 if (descriptor_IsSet(&bundle->radius.desc, fdset))
547 descriptor_Read(&bundle->radius.desc, bundle, fdset);
550 if (FD_ISSET(bundle->dev.fd, fdset)) {
556 if (bundle->dev.header) {
557 data = (u_char *)&tun;
561 sz = sizeof tun.data;
564 /* something to read from tun */
566 n = read(bundle->dev.fd, data, sz);
568 log_Printf(LogWARN, "%s: read: %s\n", bundle->dev.Name, strerror(errno));
572 if (bundle->dev.header) {
573 n -= sz - sizeof tun.data;
575 log_Printf(LogERROR, "%s: read: Got only %d bytes of data !\n",
576 bundle->dev.Name, n);
579 af = ntohl(tun.header.family);
581 if (af != AF_INET && af != AF_INET6)
585 /* XXX: Should be maintaining drop/family counts ! */
590 if (af == AF_INET && ((struct ip *)tun.data)->ip_dst.s_addr ==
591 bundle->ncp.ipcp.my_ip.s_addr) {
592 /* we've been asked to send something addressed *to* us :( */
593 if (Enabled(bundle, OPT_LOOPBACK)) {
594 pri = PacketCheck(bundle, af, tun.data, n, &bundle->filter.in,
597 n += sz - sizeof tun.data;
598 write(bundle->dev.fd, data, n);
599 log_Printf(LogDEBUG, "Looped back packet addressed to myself\n");
603 log_Printf(LogDEBUG, "Oops - forwarding packet addressed to myself\n");
607 * Process on-demand dialup. Output packets are queued within the tunnel
608 * device until the appropriate NCP is opened.
611 if (bundle_Phase(bundle) == PHASE_DEAD) {
613 * Note, we must be in AUTO mode :-/ otherwise our interface should
614 * *not* be UP and we can't receive data
616 pri = PacketCheck(bundle, af, tun.data, n, &bundle->filter.dial,
619 bundle_Open(bundle, NULL, PHYS_AUTO, 0);
622 * Drop the packet. If we were to queue it, we'd just end up with
623 * a pile of timed-out data in our output queue by the time we get
624 * around to actually dialing. We'd also prematurely reach the
625 * threshold at which we stop select()ing to read() the tun
626 * device - breaking auto-dial.
632 pri = PacketCheck(bundle, af, tun.data, n, &bundle->filter.out,
635 /* Prepend the number of seconds timeout given in the filter */
636 tun.header.timeout = secs;
637 ncp_Enqueue(&bundle->ncp, af, pri, (char *)&tun, n + sizeof tun.header);
643 bundle_DescriptorWrite(struct fdescriptor *d, struct bundle *bundle,
649 /* This is not actually necessary as struct mpserver doesn't Write() */
650 if (descriptor_IsSet(&bundle->ncp.mp.server.desc, fdset))
651 if (descriptor_Write(&bundle->ncp.mp.server.desc, bundle, fdset) == 1)
654 for (dl = bundle->links; dl; dl = dl->next)
655 if (descriptor_IsSet(&dl->desc, fdset))
656 switch (descriptor_Write(&dl->desc, bundle, fdset)) {
658 datalink_ComeDown(dl, CLOSE_NORMAL);
668 bundle_LockTun(struct bundle *bundle)
671 char pidfile[PATH_MAX];
673 snprintf(pidfile, sizeof pidfile, "%stun%d.pid", _PATH_VARRUN, bundle->unit);
674 lockfile = ID0fopen(pidfile, "w");
675 if (lockfile != NULL) {
676 fprintf(lockfile, "%d\n", (int)getpid());
679 #ifndef RELEASE_CRUNCH
681 log_Printf(LogERROR, "Warning: Can't create %s: %s\n",
682 pidfile, strerror(errno));
687 bundle_UnlockTun(struct bundle *bundle)
689 char pidfile[PATH_MAX];
691 snprintf(pidfile, sizeof pidfile, "%stun%d.pid", _PATH_VARRUN, bundle->unit);
696 bundle_Create(const char *prefix, int type, int unit)
698 static struct bundle bundle; /* there can be only one */
699 int enoentcount, err, minunit, maxunit;
701 #if defined(__FreeBSD__) && !defined(NOKLDLOAD)
704 #if defined(TUNSIFMODE) || defined(TUNSLMODE) || defined(TUNSIFHEAD)
708 if (bundle.iface != NULL) { /* Already allocated ! */
709 log_Printf(LogALERT, "bundle_Create: There's only one BUNDLE !\n");
722 #if defined(__FreeBSD__) && !defined(NOKLDLOAD)
725 for (bundle.unit = minunit; bundle.unit != maxunit; bundle.unit++) {
726 snprintf(bundle.dev.Name, sizeof bundle.dev.Name, "%s%d",
727 prefix, bundle.unit);
728 bundle.dev.fd = ID0open(bundle.dev.Name, O_RDWR);
729 if (bundle.dev.fd >= 0)
731 else if (errno == ENXIO || errno == ENOENT) {
732 #if defined(__FreeBSD__) && !defined(NOKLDLOAD)
733 if (bundle.unit == minunit && !kldtried++) {
735 * Attempt to load the tunnel interface KLD if it isn't loaded
738 if (loadmodules(LOAD_VERBOSLY, "if_tun", NULL))
743 if (errno != ENOENT || ++enoentcount > 2) {
751 if (bundle.dev.fd < 0) {
753 log_Printf(LogWARN, "No available tunnel devices found (%s)\n",
756 log_Printf(LogWARN, "%s%d: %s\n", prefix, unit, strerror(err));
760 log_SetTun(bundle.unit);
762 ifname = strrchr(bundle.dev.Name, '/');
764 ifname = bundle.dev.Name;
768 bundle.iface = iface_Create(ifname);
769 if (bundle.iface == NULL) {
770 close(bundle.dev.fd);
775 /* Make sure we're POINTOPOINT & IFF_MULTICAST */
776 iff = IFF_POINTOPOINT | IFF_MULTICAST;
777 if (ID0ioctl(bundle.dev.fd, TUNSIFMODE, &iff) < 0)
778 log_Printf(LogERROR, "bundle_Create: ioctl(TUNSIFMODE): %s\n",
783 /* Make sure we're not prepending sockaddrs */
785 if (ID0ioctl(bundle.dev.fd, TUNSLMODE, &iff) < 0)
786 log_Printf(LogERROR, "bundle_Create: ioctl(TUNSLMODE): %s\n",
791 /* We want the address family please ! */
793 if (ID0ioctl(bundle.dev.fd, TUNSIFHEAD, &iff) < 0) {
794 log_Printf(LogERROR, "bundle_Create: ioctl(TUNSIFHEAD): %s\n",
796 bundle.dev.header = 0;
798 bundle.dev.header = 1;
801 /* Always present for OpenBSD */
802 bundle.dev.header = 1;
805 * If TUNSIFHEAD isn't available and we're not OpenBSD, assume
806 * everything's AF_INET (hopefully the tun device won't pass us
809 bundle.dev.header = 0;
813 log_Printf(LogPHASE, "Using interface: %s\n", ifname);
815 bundle.bandwidth = 0;
816 bundle.routing_seq = 0;
817 bundle.phase = PHASE_DEAD;
818 bundle.CleaningUp = 0;
819 bundle.NatEnabled = 0;
821 bundle.fsm.LayerStart = bundle_LayerStart;
822 bundle.fsm.LayerUp = bundle_LayerUp;
823 bundle.fsm.LayerDown = bundle_LayerDown;
824 bundle.fsm.LayerFinish = bundle_LayerFinish;
825 bundle.fsm.object = &bundle;
827 bundle.cfg.idle.timeout = NCP_IDLE_TIMEOUT;
828 bundle.cfg.idle.min_timeout = 0;
829 *bundle.cfg.auth.name = '\0';
830 *bundle.cfg.auth.key = '\0';
831 bundle.cfg.opt = OPT_IDCHECK | OPT_LOOPBACK | OPT_SROUTES | OPT_TCPMSSFIXUP |
832 OPT_THROUGHPUT | OPT_UTMP;
834 bundle.cfg.opt |= OPT_IPCP;
835 if (probe.ipv6_available)
836 bundle.cfg.opt |= OPT_IPV6CP;
838 *bundle.cfg.label = '\0';
839 bundle.cfg.ifqueue = DEF_IFQUEUE;
840 bundle.cfg.choked.timeout = CHOKED_TIMEOUT;
841 bundle.phys_type.all = type;
842 bundle.phys_type.open = 0;
845 bundle.links = datalink_Create("deflink", &bundle, type);
846 if (bundle.links == NULL) {
847 log_Printf(LogALERT, "Cannot create data link: %s\n", strerror(errno));
848 iface_Destroy(bundle.iface);
850 close(bundle.dev.fd);
854 bundle.desc.type = BUNDLE_DESCRIPTOR;
855 bundle.desc.UpdateSet = bundle_UpdateSet;
856 bundle.desc.IsSet = bundle_IsSet;
857 bundle.desc.Read = bundle_DescriptorRead;
858 bundle.desc.Write = bundle_DescriptorWrite;
860 ncp_Init(&bundle.ncp, &bundle);
862 memset(&bundle.filter, '\0', sizeof bundle.filter);
863 bundle.filter.in.fragok = bundle.filter.in.logok = 1;
864 bundle.filter.in.name = "IN";
865 bundle.filter.out.fragok = bundle.filter.out.logok = 1;
866 bundle.filter.out.name = "OUT";
867 bundle.filter.dial.name = "DIAL";
868 bundle.filter.dial.logok = 1;
869 bundle.filter.alive.name = "ALIVE";
870 bundle.filter.alive.logok = 1;
873 for (i = 0; i < MAXFILTERS; i++) {
874 bundle.filter.in.rule[i].f_action = A_NONE;
875 bundle.filter.out.rule[i].f_action = A_NONE;
876 bundle.filter.dial.rule[i].f_action = A_NONE;
877 bundle.filter.alive.rule[i].f_action = A_NONE;
880 memset(&bundle.idle.timer, '\0', sizeof bundle.idle.timer);
881 bundle.idle.done = 0;
882 bundle.notify.fd = -1;
883 memset(&bundle.choked.timer, '\0', sizeof bundle.choked.timer);
885 radius_Init(&bundle.radius);
888 /* Clean out any leftover crud */
889 iface_Clear(bundle.iface, &bundle.ncp, 0, IFACE_CLEAR_ALL);
891 bundle_LockTun(&bundle);
897 bundle_DownInterface(struct bundle *bundle)
899 route_IfDelete(bundle, 1);
900 iface_ClearFlags(bundle->iface->name, IFF_UP);
904 bundle_Destroy(struct bundle *bundle)
909 * Clean up the interface. We don't really need to do the timer_Stop()s,
910 * mp_Down(), iface_Clear() and bundle_DownInterface() unless we're getting
911 * out under exceptional conditions such as a descriptor exception.
913 timer_Stop(&bundle->idle.timer);
914 timer_Stop(&bundle->choked.timer);
915 mp_Down(&bundle->ncp.mp);
916 iface_Clear(bundle->iface, &bundle->ncp, 0, IFACE_CLEAR_ALL);
917 bundle_DownInterface(bundle);
920 /* Tell the radius server the bad news */
921 radius_Destroy(&bundle->radius);
924 /* Again, these are all DATALINK_CLOSED unless we're abending */
927 dl = datalink_Destroy(dl);
929 ncp_Destroy(&bundle->ncp);
931 close(bundle->dev.fd);
932 bundle_UnlockTun(bundle);
934 /* In case we never made PHASE_NETWORK */
935 bundle_Notify(bundle, EX_ERRDEAD);
937 iface_Destroy(bundle->iface);
938 bundle->iface = NULL;
942 bundle_LinkClosed(struct bundle *bundle, struct datalink *dl)
945 * Our datalink has closed.
946 * CleanDatalinks() (called from DoLoop()) will remove closed
947 * BACKGROUND, FOREGROUND and DIRECT links.
948 * If it's the last data link, enter phase DEAD.
950 * NOTE: dl may not be in our list (bundle_SendDatalink()) !
953 struct datalink *odl;
956 log_SetTtyCommandMode(dl);
959 for (odl = bundle->links; odl; odl = odl->next)
960 if (odl != dl && odl->state != DATALINK_CLOSED)
964 if (dl->physical->type != PHYS_AUTO) /* Not in -auto mode */
965 bundle_DownInterface(bundle);
966 ncp2initial(&bundle->ncp);
967 mp_Down(&bundle->ncp.mp);
968 bundle_NewPhase(bundle, PHASE_DEAD);
970 if (bundle->radius.sessiontime)
971 bundle_StopSessionTimer(bundle);
973 bundle_StopIdleTimer(bundle);
978 bundle_Open(struct bundle *bundle, const char *name, int mask, int force)
981 * Please open the given datalink, or all if name == NULL
985 for (dl = bundle->links; dl; dl = dl->next)
986 if (name == NULL || !strcasecmp(dl->name, name)) {
987 if ((mask & dl->physical->type) &&
988 (dl->state == DATALINK_CLOSED ||
989 (force && dl->state == DATALINK_OPENING &&
990 dl->dial.timer.state == TIMER_RUNNING) ||
991 dl->state == DATALINK_READY)) {
992 timer_Stop(&dl->dial.timer); /* We're finished with this */
993 datalink_Up(dl, 1, 1);
994 if (mask & PHYS_AUTO)
995 break; /* Only one AUTO link at a time */
1003 bundle2datalink(struct bundle *bundle, const char *name)
1005 struct datalink *dl;
1008 for (dl = bundle->links; dl; dl = dl->next)
1009 if (!strcasecmp(dl->name, name))
1011 } else if (bundle->links && !bundle->links->next)
1012 return bundle->links;
1018 bundle_ShowLinks(struct cmdargs const *arg)
1020 struct datalink *dl;
1021 struct pppThroughput *t;
1022 unsigned long long octets;
1025 for (dl = arg->bundle->links; dl; dl = dl->next) {
1026 octets = MAX(dl->physical->link.stats.total.in.OctetsPerSecond,
1027 dl->physical->link.stats.total.out.OctetsPerSecond);
1029 prompt_Printf(arg->prompt, "Name: %s [%s, %s]",
1030 dl->name, mode2Nam(dl->physical->type), datalink_State(dl));
1031 if (dl->physical->link.stats.total.rolling && dl->state == DATALINK_OPEN)
1032 prompt_Printf(arg->prompt, " bandwidth %d, %llu bps (%llu bytes/sec)",
1033 dl->mp.bandwidth ? dl->mp.bandwidth :
1034 physical_GetSpeed(dl->physical),
1035 octets * 8, octets);
1036 prompt_Printf(arg->prompt, "\n");
1039 t = &arg->bundle->ncp.mp.link.stats.total;
1040 octets = MAX(t->in.OctetsPerSecond, t->out.OctetsPerSecond);
1041 secs = t->downtime ? 0 : throughput_uptime(t);
1042 if (secs > t->SamplePeriod)
1043 secs = t->SamplePeriod;
1045 prompt_Printf(arg->prompt, "Currently averaging %llu bps (%llu bytes/sec)"
1046 " over the last %d secs\n", octets * 8, octets, secs);
1052 optval(struct bundle *bundle, int bit)
1054 return (bundle->cfg.opt & bit) ? "enabled" : "disabled";
1058 bundle_ShowStatus(struct cmdargs const *arg)
1062 prompt_Printf(arg->prompt, "Phase %s\n", bundle_PhaseName(arg->bundle));
1063 prompt_Printf(arg->prompt, " Device: %s\n", arg->bundle->dev.Name);
1064 prompt_Printf(arg->prompt, " Interface: %s @ %lubps",
1065 arg->bundle->iface->name, arg->bundle->bandwidth);
1067 if (arg->bundle->upat) {
1068 int secs = bundle_Uptime(arg->bundle);
1070 prompt_Printf(arg->prompt, ", up time %d:%02d:%02d", secs / 3600,
1071 (secs / 60) % 60, secs % 60);
1073 prompt_Printf(arg->prompt, "\n Queued: %lu of %u\n",
1074 (unsigned long)ncp_QueueLen(&arg->bundle->ncp),
1075 arg->bundle->cfg.ifqueue);
1077 prompt_Printf(arg->prompt, "\nDefaults:\n");
1078 prompt_Printf(arg->prompt, " Label: %s\n",
1079 arg->bundle->cfg.label);
1080 prompt_Printf(arg->prompt, " Auth name: %s\n",
1081 arg->bundle->cfg.auth.name);
1082 prompt_Printf(arg->prompt, " Diagnostic socket: ");
1083 if (*server.cfg.sockname != '\0') {
1084 prompt_Printf(arg->prompt, "%s", server.cfg.sockname);
1085 if (server.cfg.mask != (mode_t)-1)
1086 prompt_Printf(arg->prompt, ", mask 0%03o", (int)server.cfg.mask);
1087 prompt_Printf(arg->prompt, "%s\n", server.fd == -1 ? " (not open)" : "");
1088 } else if (server.cfg.port != 0)
1089 prompt_Printf(arg->prompt, "TCP port %d%s\n", server.cfg.port,
1090 server.fd == -1 ? " (not open)" : "");
1092 prompt_Printf(arg->prompt, "none\n");
1094 prompt_Printf(arg->prompt, " Choked Timer: %ds\n",
1095 arg->bundle->cfg.choked.timeout);
1098 radius_Show(&arg->bundle->radius, arg->prompt);
1101 prompt_Printf(arg->prompt, " Idle Timer: ");
1102 if (arg->bundle->cfg.idle.timeout) {
1103 prompt_Printf(arg->prompt, "%ds", arg->bundle->cfg.idle.timeout);
1104 if (arg->bundle->cfg.idle.min_timeout)
1105 prompt_Printf(arg->prompt, ", min %ds",
1106 arg->bundle->cfg.idle.min_timeout);
1107 remaining = bundle_RemainingIdleTime(arg->bundle);
1108 if (remaining != -1)
1109 prompt_Printf(arg->prompt, " (%ds remaining)", remaining);
1110 prompt_Printf(arg->prompt, "\n");
1112 prompt_Printf(arg->prompt, "disabled\n");
1114 prompt_Printf(arg->prompt, " Filter Decap: %-20.20s",
1115 optval(arg->bundle, OPT_FILTERDECAP));
1116 prompt_Printf(arg->prompt, " ID check: %s\n",
1117 optval(arg->bundle, OPT_IDCHECK));
1118 prompt_Printf(arg->prompt, " Iface-Alias: %-20.20s",
1119 optval(arg->bundle, OPT_IFACEALIAS));
1121 prompt_Printf(arg->prompt, " IPCP: %s\n",
1122 optval(arg->bundle, OPT_IPCP));
1123 prompt_Printf(arg->prompt, " IPV6CP: %-20.20s",
1124 optval(arg->bundle, OPT_IPV6CP));
1126 prompt_Printf(arg->prompt, " Keep-Session: %s\n",
1127 optval(arg->bundle, OPT_KEEPSESSION));
1128 prompt_Printf(arg->prompt, " Loopback: %-20.20s",
1129 optval(arg->bundle, OPT_LOOPBACK));
1130 prompt_Printf(arg->prompt, " PasswdAuth: %s\n",
1131 optval(arg->bundle, OPT_PASSWDAUTH));
1132 prompt_Printf(arg->prompt, " Proxy: %-20.20s",
1133 optval(arg->bundle, OPT_PROXY));
1134 prompt_Printf(arg->prompt, " Proxyall: %s\n",
1135 optval(arg->bundle, OPT_PROXYALL));
1136 prompt_Printf(arg->prompt, " Sticky Routes: %-20.20s",
1137 optval(arg->bundle, OPT_SROUTES));
1138 prompt_Printf(arg->prompt, " TCPMSS Fixup: %s\n",
1139 optval(arg->bundle, OPT_TCPMSSFIXUP));
1140 prompt_Printf(arg->prompt, " Throughput: %-20.20s",
1141 optval(arg->bundle, OPT_THROUGHPUT));
1142 prompt_Printf(arg->prompt, " Utmp Logging: %s\n",
1143 optval(arg->bundle, OPT_UTMP));
1149 bundle_IdleTimeout(void *v)
1151 struct bundle *bundle = (struct bundle *)v;
1153 log_Printf(LogPHASE, "Idle timer expired\n");
1154 bundle_StopIdleTimer(bundle);
1155 bundle_Close(bundle, NULL, CLOSE_STAYDOWN);
1159 * Start Idle timer. If timeout is reached, we call bundle_Close() to
1160 * close LCP and link.
1163 bundle_StartIdleTimer(struct bundle *bundle, unsigned secs)
1165 timer_Stop(&bundle->idle.timer);
1166 if ((bundle->phys_type.open & (PHYS_DEDICATED|PHYS_DDIAL)) !=
1167 bundle->phys_type.open && bundle->cfg.idle.timeout) {
1168 time_t now = time(NULL);
1171 secs = bundle->cfg.idle.timeout;
1173 /* We want at least `secs' */
1174 if (bundle->cfg.idle.min_timeout > secs && bundle->upat) {
1175 int up = now - bundle->upat;
1177 if ((long long)bundle->cfg.idle.min_timeout - up > (long long)secs)
1178 /* Only increase from the current `remaining' value */
1179 secs = bundle->cfg.idle.min_timeout - up;
1181 bundle->idle.timer.func = bundle_IdleTimeout;
1182 bundle->idle.timer.name = "idle";
1183 bundle->idle.timer.load = secs * SECTICKS;
1184 bundle->idle.timer.arg = bundle;
1185 timer_Start(&bundle->idle.timer);
1186 bundle->idle.done = now + secs;
1191 bundle_SetIdleTimer(struct bundle *bundle, int timeout, int min_timeout)
1193 bundle->cfg.idle.timeout = timeout;
1194 if (min_timeout >= 0)
1195 bundle->cfg.idle.min_timeout = min_timeout;
1196 if (ncp_LayersOpen(&bundle->ncp))
1197 bundle_StartIdleTimer(bundle, 0);
1201 bundle_StopIdleTimer(struct bundle *bundle)
1203 timer_Stop(&bundle->idle.timer);
1204 bundle->idle.done = 0;
1208 bundle_RemainingIdleTime(struct bundle *bundle)
1210 if (bundle->idle.done)
1211 return bundle->idle.done - time(NULL);
1218 bundle_SessionTimeout(void *v)
1220 struct bundle *bundle = (struct bundle *)v;
1222 log_Printf(LogPHASE, "Session-Timeout timer expired\n");
1223 bundle_StopSessionTimer(bundle);
1224 bundle_Close(bundle, NULL, CLOSE_STAYDOWN);
1228 bundle_StartSessionTimer(struct bundle *bundle, unsigned secs)
1230 timer_Stop(&bundle->session.timer);
1231 if ((bundle->phys_type.open & (PHYS_DEDICATED|PHYS_DDIAL)) !=
1232 bundle->phys_type.open && bundle->radius.sessiontime) {
1233 time_t now = time(NULL);
1236 secs = bundle->radius.sessiontime;
1238 bundle->session.timer.func = bundle_SessionTimeout;
1239 bundle->session.timer.name = "session";
1240 bundle->session.timer.load = secs * SECTICKS;
1241 bundle->session.timer.arg = bundle;
1242 timer_Start(&bundle->session.timer);
1243 bundle->session.done = now + secs;
1248 bundle_StopSessionTimer(struct bundle *bundle)
1250 timer_Stop(&bundle->session.timer);
1251 bundle->session.done = 0;
1257 bundle_IsDead(struct bundle *bundle)
1259 return !bundle->links || (bundle->phase == PHASE_DEAD && bundle->CleaningUp);
1262 static struct datalink *
1263 bundle_DatalinkLinkout(struct bundle *bundle, struct datalink *dl)
1265 struct datalink **dlp;
1267 for (dlp = &bundle->links; *dlp; dlp = &(*dlp)->next)
1271 bundle_LinksRemoved(bundle);
1279 bundle_DatalinkLinkin(struct bundle *bundle, struct datalink *dl)
1281 struct datalink **dlp = &bundle->links;
1284 dlp = &(*dlp)->next;
1289 bundle_LinkAdded(bundle, dl);
1290 mp_CheckAutoloadTimer(&bundle->ncp.mp);
1294 bundle_CleanDatalinks(struct bundle *bundle)
1296 struct datalink **dlp = &bundle->links;
1300 if ((*dlp)->state == DATALINK_CLOSED &&
1301 (*dlp)->physical->type &
1302 (PHYS_DIRECT|PHYS_BACKGROUND|PHYS_FOREGROUND)) {
1303 *dlp = datalink_Destroy(*dlp);
1306 dlp = &(*dlp)->next;
1309 bundle_LinksRemoved(bundle);
1313 bundle_DatalinkClone(struct bundle *bundle, struct datalink *dl,
1316 if (bundle2datalink(bundle, name)) {
1317 log_Printf(LogWARN, "Clone: %s: name already exists\n", name);
1321 bundle_DatalinkLinkin(bundle, datalink_Clone(dl, name));
1326 bundle_DatalinkRemove(struct bundle *bundle, struct datalink *dl)
1328 dl = bundle_DatalinkLinkout(bundle, dl);
1330 datalink_Destroy(dl);
1334 bundle_SetLabel(struct bundle *bundle, const char *label)
1337 strncpy(bundle->cfg.label, label, sizeof bundle->cfg.label - 1);
1339 *bundle->cfg.label = '\0';
1343 bundle_GetLabel(struct bundle *bundle)
1345 return *bundle->cfg.label ? bundle->cfg.label : NULL;
1351 struct iovec iov[SCATTER_SEGMENTS];
1352 int niov, expect, f;
1354 iov[0].iov_len = strlen(Version) + 1;
1355 iov[0].iov_base = NULL;
1357 if (datalink2iov(NULL, iov, &niov, SCATTER_SEGMENTS, NULL, NULL) == -1) {
1358 log_Printf(LogERROR, "Cannot determine space required for link\n");
1362 for (f = expect = 0; f < niov; f++)
1363 expect += iov[f].iov_len;
1369 bundle_ReceiveDatalink(struct bundle *bundle, int s)
1371 char cmsgbuf[sizeof(struct cmsghdr) + sizeof(int) * SEND_MAXFD];
1372 int niov, expect, f, *fd, nfd, onfd, got;
1373 struct iovec iov[SCATTER_SEGMENTS];
1374 struct cmsghdr *cmsg;
1376 struct datalink *dl;
1379 log_Printf(LogPHASE, "Receiving datalink\n");
1382 * Create our scatter/gather array - passing NULL gets the space
1383 * allocation requirement rather than actually flattening the
1386 iov[0].iov_len = strlen(Version) + 1;
1387 iov[0].iov_base = NULL;
1389 if (datalink2iov(NULL, iov, &niov, SCATTER_SEGMENTS, NULL, NULL) == -1) {
1390 log_Printf(LogERROR, "Cannot determine space required for link\n");
1394 /* Allocate the scatter/gather array for recvmsg() */
1395 for (f = expect = 0; f < niov; f++) {
1396 if ((iov[f].iov_base = malloc(iov[f].iov_len)) == NULL) {
1397 log_Printf(LogERROR, "Cannot allocate space to receive link\n");
1401 expect += iov[f].iov_len;
1404 /* Set up our message */
1405 cmsg = (struct cmsghdr *)cmsgbuf;
1406 cmsg->cmsg_len = sizeof cmsgbuf;
1407 cmsg->cmsg_level = SOL_SOCKET;
1408 cmsg->cmsg_type = 0;
1410 memset(&msg, '\0', sizeof msg);
1411 msg.msg_name = NULL;
1412 msg.msg_namelen = 0;
1414 msg.msg_iovlen = 1; /* Only send the version at the first pass */
1415 msg.msg_control = cmsgbuf;
1416 msg.msg_controllen = sizeof cmsgbuf;
1418 log_Printf(LogDEBUG, "Expecting %u scatter/gather bytes\n",
1419 (unsigned)iov[0].iov_len);
1421 if ((got = recvmsg(s, &msg, MSG_WAITALL)) != iov[0].iov_len) {
1423 log_Printf(LogERROR, "Failed recvmsg: %s\n", strerror(errno));
1425 log_Printf(LogERROR, "Failed recvmsg: Got %d, not %u\n",
1426 got, (unsigned)iov[0].iov_len);
1428 free(iov[niov].iov_base);
1432 if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
1433 log_Printf(LogERROR, "Recvmsg: no descriptors received !\n");
1435 free(iov[niov].iov_base);
1439 fd = (int *)CMSG_DATA(cmsg);
1440 nfd = ((caddr_t)cmsg + cmsg->cmsg_len - (caddr_t)fd) / sizeof(int);
1443 log_Printf(LogERROR, "Recvmsg: %d descriptor%s received (too few) !\n",
1444 nfd, nfd == 1 ? "" : "s");
1448 free(iov[niov].iov_base);
1453 * We've successfully received two or more open file descriptors
1454 * through our socket, plus a version string. Make sure it's the
1455 * correct version, and drop the connection if it's not.
1457 if (strncmp(Version, iov[0].iov_base, iov[0].iov_len)) {
1458 log_Printf(LogWARN, "Cannot receive datalink, incorrect version"
1459 " (\"%.*s\", not \"%s\")\n", (int)iov[0].iov_len,
1460 (char *)iov[0].iov_base, Version);
1464 free(iov[niov].iov_base);
1469 * Everything looks good. Send the other side our process id so that
1470 * they can transfer lock ownership, and wait for them to send the
1474 if ((got = write(fd[1], &pid, sizeof pid)) != sizeof pid) {
1476 log_Printf(LogERROR, "Failed write: %s\n", strerror(errno));
1478 log_Printf(LogERROR, "Failed write: Got %d, not %d\n", got,
1483 free(iov[niov].iov_base);
1487 if ((got = readv(fd[1], iov + 1, niov - 1)) != expect) {
1489 log_Printf(LogERROR, "Failed write: %s\n", strerror(errno));
1491 log_Printf(LogERROR, "Failed write: Got %d, not %d\n", got, expect);
1495 free(iov[niov].iov_base);
1500 onfd = nfd; /* We've got this many in our array */
1501 nfd -= 2; /* Don't include p->fd and our reply descriptor */
1502 niov = 1; /* Skip the version id */
1503 dl = iov2datalink(bundle, iov, &niov, sizeof iov / sizeof *iov, fd[0],
1508 log_Printf(LogERROR, "bundle_ReceiveDatalink: Failed to handle %d "
1509 "auxiliary file descriptors (%d remain)\n", onfd, nfd);
1510 datalink_Destroy(dl);
1515 bundle_DatalinkLinkin(bundle, dl);
1516 datalink_AuthOk(dl);
1517 bundle_CalculateBandwidth(dl->bundle);
1526 free(iov[0].iov_base);
1530 bundle_SendDatalink(struct datalink *dl, int s, struct sockaddr_un *sun)
1532 char cmsgbuf[CMSG_SPACE(sizeof(int) * SEND_MAXFD)];
1533 const char *constlock;
1535 struct cmsghdr *cmsg;
1537 struct iovec iov[SCATTER_SEGMENTS];
1538 int niov, f, expect, newsid, fd[SEND_MAXFD], nfd, reply[2], got;
1541 log_Printf(LogPHASE, "Transmitting datalink %s\n", dl->name);
1543 /* Record the base device name for a lock transfer later */
1544 constlock = physical_LockedDevice(dl->physical);
1546 lock = alloca(strlen(constlock) + 1);
1547 strcpy(lock, constlock);
1551 bundle_LinkClosed(dl->bundle, dl);
1552 bundle_DatalinkLinkout(dl->bundle, dl);
1554 /* Build our scatter/gather array */
1555 iov[0].iov_len = strlen(Version) + 1;
1556 iov[0].iov_base = strdup(Version);
1560 fd[0] = datalink2iov(dl, iov, &niov, SCATTER_SEGMENTS, fd + 2, &nfd);
1562 if (fd[0] != -1 && socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, reply) != -1) {
1564 * fd[1] is used to get the peer process id back, then to confirm that
1565 * we've transferred any device locks to that process id.
1569 nfd += 2; /* Include fd[0] and fd[1] */
1570 memset(&msg, '\0', sizeof msg);
1572 msg.msg_name = NULL;
1573 msg.msg_namelen = 0;
1575 * Only send the version to start... We used to send the whole lot, but
1576 * this caused problems with our RECVBUF size as a single link is about
1577 * 22k ! This way, we should bump into no limits.
1581 msg.msg_control = cmsgbuf;
1582 msg.msg_controllen = CMSG_SPACE(sizeof(int) * nfd);
1585 cmsg = (struct cmsghdr *)cmsgbuf;
1586 cmsg->cmsg_len = msg.msg_controllen;
1587 cmsg->cmsg_level = SOL_SOCKET;
1588 cmsg->cmsg_type = SCM_RIGHTS;
1590 for (f = 0; f < nfd; f++)
1591 *((int *)CMSG_DATA(cmsg) + f) = fd[f];
1593 for (f = 1, expect = 0; f < niov; f++)
1594 expect += iov[f].iov_len;
1596 if (setsockopt(reply[0], SOL_SOCKET, SO_SNDBUF, &expect, sizeof(int)) == -1)
1597 log_Printf(LogERROR, "setsockopt(SO_RCVBUF, %d): %s\n", expect,
1599 if (setsockopt(reply[1], SOL_SOCKET, SO_RCVBUF, &expect, sizeof(int)) == -1)
1600 log_Printf(LogERROR, "setsockopt(SO_RCVBUF, %d): %s\n", expect,
1603 log_Printf(LogDEBUG, "Sending %d descriptor%s and %u bytes in scatter"
1604 "/gather array\n", nfd, nfd == 1 ? "" : "s",
1605 (unsigned)iov[0].iov_len);
1607 if ((got = sendmsg(s, &msg, 0)) == -1)
1608 log_Printf(LogERROR, "Failed sendmsg: %s: %s\n",
1609 sun->sun_path, strerror(errno));
1610 else if (got != iov[0].iov_len)
1611 log_Printf(LogERROR, "%s: Failed initial sendmsg: Only sent %d of %u\n",
1612 sun->sun_path, got, (unsigned)iov[0].iov_len);
1614 /* We must get the ACK before closing the descriptor ! */
1617 if ((got = read(reply[0], &newpid, sizeof newpid)) == sizeof newpid) {
1618 log_Printf(LogDEBUG, "Received confirmation from pid %d\n",
1620 if (lock && (res = ID0uu_lock_txfr(lock, newpid)) != UU_LOCK_OK)
1621 log_Printf(LogERROR, "uu_lock_txfr: %s\n", uu_lockerr(res));
1623 log_Printf(LogDEBUG, "Transmitting link (%d bytes)\n", expect);
1624 if ((got = writev(reply[0], iov + 1, niov - 1)) != expect) {
1626 log_Printf(LogERROR, "%s: Failed writev: %s\n",
1627 sun->sun_path, strerror(errno));
1629 log_Printf(LogERROR, "%s: Failed writev: Wrote %d of %d\n",
1630 sun->sun_path, got, expect);
1632 } else if (got == -1)
1633 log_Printf(LogERROR, "%s: Failed socketpair read: %s\n",
1634 sun->sun_path, strerror(errno));
1636 log_Printf(LogERROR, "%s: Failed socketpair read: Got %d of %d\n",
1637 sun->sun_path, got, (int)(sizeof newpid));
1643 newsid = Enabled(dl->bundle, OPT_KEEPSESSION) ||
1644 tcgetpgrp(fd[0]) == getpgrp();
1648 bundle_setsid(dl->bundle, got != -1);
1653 free(iov[niov].iov_base);
1657 bundle_RenameDatalink(struct bundle *bundle, struct datalink *ndl,
1660 struct datalink *dl;
1662 if (!strcasecmp(ndl->name, name))
1665 for (dl = bundle->links; dl; dl = dl->next)
1666 if (!strcasecmp(dl->name, name))
1669 datalink_Rename(ndl, name);
1674 bundle_SetMode(struct bundle *bundle, struct datalink *dl, int mode)
1678 omode = dl->physical->type;
1682 if (mode == PHYS_AUTO && !(bundle->phys_type.all & PHYS_AUTO))
1683 /* First auto link */
1684 if (bundle->ncp.ipcp.peer_ip.s_addr == INADDR_ANY) {
1685 log_Printf(LogWARN, "You must `set ifaddr' or `open' before"
1686 " changing mode to %s\n", mode2Nam(mode));
1690 if (!datalink_SetMode(dl, mode))
1693 if (mode == PHYS_AUTO && !(bundle->phys_type.all & PHYS_AUTO) &&
1694 bundle->phase != PHASE_NETWORK)
1695 /* First auto link, we need an interface */
1696 ipcp_InterfaceUp(&bundle->ncp.ipcp);
1698 /* Regenerate phys_type and adjust idle timer */
1699 bundle_LinksRemoved(bundle);
1705 bundle_setsid(struct bundle *bundle, int holdsession)
1708 * Lose the current session. This means getting rid of our pid
1709 * too so that the tty device will really go away, and any getty
1710 * etc will be allowed to restart.
1715 struct datalink *dl;
1717 if (!holdsession && bundle_IsDead(bundle)) {
1719 * No need to lose our session after all... we're going away anyway
1721 * We should really stop the timer and pause if holdsession is set and
1722 * the bundle's dead, but that leaves other resources lying about :-(
1728 if (pipe(fds) == -1) {
1729 log_Printf(LogERROR, "pipe: %s\n", strerror(errno));
1732 switch ((pid = fork())) {
1734 log_Printf(LogERROR, "fork: %s\n", strerror(errno));
1740 read(fds[0], &done, 1); /* uu_locks are mine ! */
1742 if (pipe(fds) == -1) {
1743 log_Printf(LogERROR, "pipe(2): %s\n", strerror(errno));
1746 switch ((pid = fork())) {
1748 log_Printf(LogERROR, "fork(2): %s\n", strerror(errno));
1754 bundle_LockTun(bundle); /* update pid */
1755 read(fds[0], &done, 1); /* uu_locks are mine ! */
1758 bundle_ChangedPID(bundle);
1759 log_Printf(LogDEBUG, "%d -> %d: %s session control\n",
1760 (int)orig, (int)getpid(),
1761 holdsession ? "Passed" : "Dropped");
1762 timer_InitService(0); /* Start the Timer Service */
1766 /* Give away all our physical locks (to the final process) */
1767 for (dl = bundle->links; dl; dl = dl->next)
1768 if (dl->state != DATALINK_CLOSED)
1769 physical_ChangedPid(dl->physical, pid);
1770 write(fds[1], "!", 1); /* done */
1778 /* Give away all our physical locks (to the intermediate process) */
1779 for (dl = bundle->links; dl; dl = dl->next)
1780 if (dl->state != DATALINK_CLOSED)
1781 physical_ChangedPid(dl->physical, pid);
1782 write(fds[1], "!", 1); /* done */
1787 timer_TermService();
1788 signal(SIGPIPE, SIG_DFL);
1789 signal(SIGALRM, SIG_DFL);
1790 signal(SIGHUP, SIG_DFL);
1791 signal(SIGTERM, SIG_DFL);
1792 signal(SIGINT, SIG_DFL);
1793 signal(SIGQUIT, SIG_DFL);
1794 for (fd = getdtablesize(); fd >= 0; fd--)
1797 * Reap the intermediate process. As we're not exiting but the
1798 * intermediate is, we don't want it to become defunct.
1800 waitpid(pid, &status, 0);
1801 /* Tweak our process arguments.... */
1802 SetTitle("session owner");
1804 setuid(ID0realuid());
1807 * Hang around for a HUP. This should happen as soon as the
1808 * ppp that we passed our ctty descriptor to closes it.
1809 * NOTE: If this process dies, the passed descriptor becomes
1810 * invalid and will give a select() error by setting one
1811 * of the error fds, aborting the other ppp. We don't
1812 * want that to happen !
1822 bundle_HighestState(struct bundle *bundle)
1824 struct datalink *dl;
1825 int result = DATALINK_CLOSED;
1827 for (dl = bundle->links; dl; dl = dl->next)
1828 if (result < dl->state)
1835 bundle_Exception(struct bundle *bundle, int fd)
1837 struct datalink *dl;
1839 for (dl = bundle->links; dl; dl = dl->next)
1840 if (dl->physical->fd == fd) {
1841 datalink_Down(dl, CLOSE_NORMAL);
1849 bundle_AdjustFilters(struct bundle *bundle, struct ncpaddr *local,
1850 struct ncpaddr *remote)
1852 filter_AdjustAddr(&bundle->filter.in, local, remote, NULL);
1853 filter_AdjustAddr(&bundle->filter.out, local, remote, NULL);
1854 filter_AdjustAddr(&bundle->filter.dial, local, remote, NULL);
1855 filter_AdjustAddr(&bundle->filter.alive, local, remote, NULL);
1859 bundle_AdjustDNS(struct bundle *bundle)
1861 struct in_addr *dns = bundle->ncp.ipcp.ns.dns;
1863 filter_AdjustAddr(&bundle->filter.in, NULL, NULL, dns);
1864 filter_AdjustAddr(&bundle->filter.out, NULL, NULL, dns);
1865 filter_AdjustAddr(&bundle->filter.dial, NULL, NULL, dns);
1866 filter_AdjustAddr(&bundle->filter.alive, NULL, NULL, dns);
1870 bundle_CalculateBandwidth(struct bundle *bundle)
1872 struct datalink *dl;
1873 int sp, overhead, maxoverhead;
1875 bundle->bandwidth = 0;
1876 bundle->iface->mtu = 0;
1879 for (dl = bundle->links; dl; dl = dl->next) {
1880 overhead = ccp_MTUOverhead(&dl->physical->link.ccp);
1881 if (maxoverhead < overhead)
1882 maxoverhead = overhead;
1883 if (dl->state == DATALINK_OPEN) {
1884 if ((sp = dl->mp.bandwidth) == 0 &&
1885 (sp = physical_GetSpeed(dl->physical)) == 0)
1886 log_Printf(LogDEBUG, "%s: %s: Cannot determine bandwidth\n",
1887 dl->name, dl->physical->name.full);
1889 bundle->bandwidth += sp;
1890 if (!bundle->ncp.mp.active) {
1891 bundle->iface->mtu = dl->physical->link.lcp.his_mru;
1897 if (bundle->bandwidth == 0)
1898 bundle->bandwidth = 115200; /* Shrug */
1900 if (bundle->ncp.mp.active) {
1901 bundle->iface->mtu = bundle->ncp.mp.peer_mrru;
1902 overhead = ccp_MTUOverhead(&bundle->ncp.mp.link.ccp);
1903 if (maxoverhead < overhead)
1904 maxoverhead = overhead;
1905 } else if (!bundle->iface->mtu)
1906 bundle->iface->mtu = DEF_MRU;
1909 if (bundle->radius.valid && bundle->radius.mtu &&
1910 bundle->radius.mtu < bundle->iface->mtu) {
1911 log_Printf(LogLCP, "Reducing MTU to radius value %lu\n",
1912 bundle->radius.mtu);
1913 bundle->iface->mtu = bundle->radius.mtu;
1918 log_Printf(LogLCP, "Reducing MTU from %d to %d (CCP requirement)\n",
1919 bundle->iface->mtu, bundle->iface->mtu - maxoverhead);
1920 bundle->iface->mtu -= maxoverhead;
1923 tun_configure(bundle);
1925 route_UpdateMTU(bundle);
1929 bundle_AutoAdjust(struct bundle *bundle, int percent, int what)
1931 struct datalink *dl, *choice, *otherlinkup;
1933 choice = otherlinkup = NULL;
1934 for (dl = bundle->links; dl; dl = dl->next)
1935 if (dl->physical->type == PHYS_AUTO) {
1936 if (dl->state == DATALINK_OPEN) {
1937 if (what == AUTO_DOWN) {
1939 otherlinkup = choice;
1942 } else if (dl->state == DATALINK_CLOSED) {
1943 if (what == AUTO_UP) {
1948 /* An auto link in an intermediate state - forget it for the moment */
1952 } else if (dl->state == DATALINK_OPEN && what == AUTO_DOWN)
1956 if (what == AUTO_UP) {
1957 log_Printf(LogPHASE, "%d%% saturation -> Opening link ``%s''\n",
1958 percent, choice->name);
1959 datalink_Up(choice, 1, 1);
1960 mp_CheckAutoloadTimer(&bundle->ncp.mp);
1961 } else if (otherlinkup) { /* Only bring the second-last link down */
1962 log_Printf(LogPHASE, "%d%% saturation -> Closing link ``%s''\n",
1963 percent, choice->name);
1964 datalink_Close(choice, CLOSE_STAYDOWN);
1965 mp_CheckAutoloadTimer(&bundle->ncp.mp);
1971 bundle_WantAutoloadTimer(struct bundle *bundle)
1973 struct datalink *dl;
1974 int autolink, opened;
1976 if (bundle->phase == PHASE_NETWORK) {
1977 for (autolink = opened = 0, dl = bundle->links; dl; dl = dl->next)
1978 if (dl->physical->type == PHYS_AUTO) {
1979 if (++autolink == 2 || (autolink == 1 && opened))
1980 /* Two auto links or one auto and one open in NETWORK phase */
1982 } else if (dl->state == DATALINK_OPEN) {
1985 /* One auto and one open link in NETWORK phase */
1994 bundle_ChangedPID(struct bundle *bundle)
1997 ioctl(bundle->dev.fd, TUNSIFPID, 0);
2002 bundle_Uptime(struct bundle *bundle)
2005 return time(NULL) - bundle->upat;