bundle.c revision 40679
136285Sbrian/*- 236285Sbrian * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org> 336285Sbrian * All rights reserved. 436285Sbrian * 536285Sbrian * Redistribution and use in source and binary forms, with or without 636285Sbrian * modification, are permitted provided that the following conditions 736285Sbrian * are met: 836285Sbrian * 1. Redistributions of source code must retain the above copyright 936285Sbrian * notice, this list of conditions and the following disclaimer. 1036285Sbrian * 2. Redistributions in binary form must reproduce the above copyright 1136285Sbrian * notice, this list of conditions and the following disclaimer in the 1236285Sbrian * documentation and/or other materials provided with the distribution. 1336285Sbrian * 1436285Sbrian * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1536285Sbrian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1636285Sbrian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1736285Sbrian * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1836285Sbrian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1936285Sbrian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2036285Sbrian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2136285Sbrian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2236285Sbrian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2336285Sbrian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2436285Sbrian * SUCH DAMAGE. 2536285Sbrian * 2640679Sbrian * $Id: bundle.c,v 1.38 1998/10/26 19:07:38 brian Exp $ 2736285Sbrian */ 2836285Sbrian 2936452Sbrian#include <sys/param.h> 3036285Sbrian#include <sys/socket.h> 3136285Sbrian#include <netinet/in.h> 3236285Sbrian#include <net/if.h> 3336285Sbrian#include <arpa/inet.h> 3436285Sbrian#include <net/route.h> 3536285Sbrian#include <net/if_dl.h> 3636285Sbrian#include <netinet/in_systm.h> 3736285Sbrian#include <netinet/ip.h> 3836285Sbrian#include <sys/un.h> 3936285Sbrian 4036285Sbrian#include <errno.h> 4136285Sbrian#include <fcntl.h> 4236285Sbrian#include <paths.h> 4336285Sbrian#include <stdio.h> 4436285Sbrian#include <stdlib.h> 4536285Sbrian#include <string.h> 4636285Sbrian#include <sys/ioctl.h> 4736285Sbrian#include <sys/uio.h> 4836345Sbrian#include <sys/wait.h> 4936285Sbrian#include <termios.h> 5036285Sbrian#include <unistd.h> 5136285Sbrian 5239395Sbrian#ifndef NOALIAS 5339395Sbrian#ifdef __OpenBSD__ 5439395Sbrian#include "alias.h" 5539395Sbrian#else 5639395Sbrian#include <alias.h> 5739395Sbrian#endif 5839395Sbrian#endif 5937009Sbrian#include "defs.h" 6036285Sbrian#include "command.h" 6136285Sbrian#include "mbuf.h" 6236285Sbrian#include "log.h" 6336285Sbrian#include "id.h" 6436285Sbrian#include "timer.h" 6536285Sbrian#include "fsm.h" 6636285Sbrian#include "iplist.h" 6736285Sbrian#include "lqr.h" 6836285Sbrian#include "hdlc.h" 6936285Sbrian#include "throughput.h" 7036285Sbrian#include "slcompress.h" 7136285Sbrian#include "ipcp.h" 7236285Sbrian#include "filter.h" 7336285Sbrian#include "descriptor.h" 7436285Sbrian#include "route.h" 7536285Sbrian#include "lcp.h" 7636285Sbrian#include "ccp.h" 7736285Sbrian#include "link.h" 7836285Sbrian#include "mp.h" 7936285Sbrian#include "bundle.h" 8036285Sbrian#include "async.h" 8136285Sbrian#include "physical.h" 8236285Sbrian#include "modem.h" 8336285Sbrian#include "auth.h" 8436285Sbrian#include "lcpproto.h" 8536285Sbrian#include "chap.h" 8636285Sbrian#include "tun.h" 8736285Sbrian#include "prompt.h" 8836285Sbrian#include "chat.h" 8938174Sbrian#include "cbcp.h" 9036285Sbrian#include "datalink.h" 9136285Sbrian#include "ip.h" 9240561Sbrian#include "iface.h" 9336285Sbrian 9436285Sbrian#define SCATTER_SEGMENTS 4 /* version, datalink, name, physical */ 9536285Sbrian#define SOCKET_OVERHEAD 100 /* additional buffer space for large */ 9636285Sbrian /* {recv,send}msg() calls */ 9736285Sbrian 9836285Sbrianstatic int bundle_RemainingIdleTime(struct bundle *); 9936285Sbrianstatic int bundle_RemainingAutoLoadTime(struct bundle *); 10036285Sbrian 10136285Sbrianstatic const char *PhaseNames[] = { 10236285Sbrian "Dead", "Establish", "Authenticate", "Network", "Terminate" 10336285Sbrian}; 10436285Sbrian 10536285Sbrianconst char * 10636285Sbrianbundle_PhaseName(struct bundle *bundle) 10736285Sbrian{ 10836285Sbrian return bundle->phase <= PHASE_TERMINATE ? 10936285Sbrian PhaseNames[bundle->phase] : "unknown"; 11036285Sbrian} 11136285Sbrian 11236285Sbrianvoid 11336285Sbrianbundle_NewPhase(struct bundle *bundle, u_int new) 11436285Sbrian{ 11536285Sbrian if (new == bundle->phase) 11636285Sbrian return; 11736285Sbrian 11836285Sbrian if (new <= PHASE_TERMINATE) 11936285Sbrian log_Printf(LogPHASE, "bundle: %s\n", PhaseNames[new]); 12036285Sbrian 12136285Sbrian switch (new) { 12236285Sbrian case PHASE_DEAD: 12336314Sbrian log_DisplayPrompts(); 12436285Sbrian bundle->phase = new; 12536285Sbrian break; 12636285Sbrian 12736285Sbrian case PHASE_ESTABLISH: 12836285Sbrian bundle->phase = new; 12936285Sbrian break; 13036285Sbrian 13136285Sbrian case PHASE_AUTHENTICATE: 13236285Sbrian bundle->phase = new; 13336314Sbrian log_DisplayPrompts(); 13436285Sbrian break; 13536285Sbrian 13636285Sbrian case PHASE_NETWORK: 13736285Sbrian ipcp_Setup(&bundle->ncp.ipcp); 13836285Sbrian fsm_Up(&bundle->ncp.ipcp.fsm); 13936285Sbrian fsm_Open(&bundle->ncp.ipcp.fsm); 14036285Sbrian bundle->phase = new; 14136314Sbrian log_DisplayPrompts(); 14236285Sbrian break; 14336285Sbrian 14436285Sbrian case PHASE_TERMINATE: 14536285Sbrian bundle->phase = new; 14636285Sbrian mp_Down(&bundle->ncp.mp); 14736314Sbrian log_DisplayPrompts(); 14836285Sbrian break; 14936285Sbrian } 15036285Sbrian} 15136285Sbrian 15236285Sbrianstatic void 15336285Sbrianbundle_LayerStart(void *v, struct fsm *fp) 15436285Sbrian{ 15536285Sbrian /* The given FSM is about to start up ! */ 15636285Sbrian} 15736285Sbrian 15836285Sbrian 15936285Sbrianstatic void 16036285Sbrianbundle_Notify(struct bundle *bundle, char c) 16136285Sbrian{ 16236285Sbrian if (bundle->notify.fd != -1) { 16336285Sbrian if (write(bundle->notify.fd, &c, 1) == 1) 16436285Sbrian log_Printf(LogPHASE, "Parent notified of success.\n"); 16536285Sbrian else 16636285Sbrian log_Printf(LogPHASE, "Failed to notify parent of success.\n"); 16736285Sbrian close(bundle->notify.fd); 16836285Sbrian bundle->notify.fd = -1; 16936285Sbrian } 17036285Sbrian} 17136285Sbrian 17238544Sbrianstatic void 17338544Sbrianbundle_ClearQueues(void *v) 17438544Sbrian{ 17538544Sbrian struct bundle *bundle = (struct bundle *)v; 17638544Sbrian struct datalink *dl; 17738544Sbrian 17838544Sbrian log_Printf(LogPHASE, "Clearing choked output queue\n"); 17938544Sbrian timer_Stop(&bundle->choked.timer); 18038544Sbrian 18138544Sbrian /* 18238544Sbrian * Emergency time: 18338544Sbrian * 18438544Sbrian * We've had a full queue for PACKET_DEL_SECS seconds without being 18538544Sbrian * able to get rid of any of the packets. We've probably given up 18638544Sbrian * on the redials at this point, and the queued data has almost 18738544Sbrian * definitely been timed out by the layer above. As this is preventing 18838544Sbrian * us from reading the TUN_NAME device (we don't want to buffer stuff 18938544Sbrian * indefinitely), we may as well nuke this data and start with a clean 19038544Sbrian * slate ! 19138544Sbrian * 19238544Sbrian * Unfortunately, this has the side effect of shafting any compression 19338544Sbrian * dictionaries in use (causing the relevant RESET_REQ/RESET_ACK). 19438544Sbrian */ 19538544Sbrian 19638557Sbrian ip_DeleteQueue(&bundle->ncp.ipcp); 19738544Sbrian mp_DeleteQueue(&bundle->ncp.mp); 19838544Sbrian for (dl = bundle->links; dl; dl = dl->next) 19938544Sbrian physical_DeleteQueue(dl->physical); 20038544Sbrian} 20138544Sbrian 20236285Sbrianstatic void 20336285Sbrianbundle_AutoLoadTimeout(void *v) 20436285Sbrian{ 20536285Sbrian struct bundle *bundle = (struct bundle *)v; 20636285Sbrian 20736285Sbrian if (bundle->autoload.comingup) { 20836285Sbrian log_Printf(LogPHASE, "autoload: Another link is required\n"); 20936285Sbrian /* bundle_Open() stops the timer */ 21037955Sbrian bundle_Open(bundle, NULL, PHYS_AUTO, 0); 21136285Sbrian } else { 21236285Sbrian struct datalink *dl, *last; 21336285Sbrian 21436285Sbrian timer_Stop(&bundle->autoload.timer); 21536285Sbrian for (last = NULL, dl = bundle->links; dl; dl = dl->next) 21636465Sbrian if (dl->physical->type == PHYS_AUTO && dl->state == DATALINK_OPEN) 21736285Sbrian last = dl; 21836285Sbrian 21936285Sbrian if (last) 22037007Sbrian datalink_Close(last, CLOSE_STAYDOWN); 22136285Sbrian } 22236285Sbrian} 22336285Sbrian 22436285Sbrianstatic void 22536285Sbrianbundle_StartAutoLoadTimer(struct bundle *bundle, int up) 22636285Sbrian{ 22736285Sbrian struct datalink *dl; 22836285Sbrian 22936285Sbrian timer_Stop(&bundle->autoload.timer); 23036285Sbrian 23136285Sbrian if (bundle->CleaningUp || bundle->phase != PHASE_NETWORK) { 23236285Sbrian dl = NULL; 23336285Sbrian bundle->autoload.running = 0; 23436285Sbrian } else if (up) { 23536285Sbrian for (dl = bundle->links; dl; dl = dl->next) 23636465Sbrian if (dl->state == DATALINK_CLOSED && dl->physical->type == PHYS_AUTO) { 23736285Sbrian if (bundle->cfg.autoload.max.timeout) { 23836285Sbrian bundle->autoload.timer.func = bundle_AutoLoadTimeout; 23936285Sbrian bundle->autoload.timer.name = "autoload up"; 24036285Sbrian bundle->autoload.timer.load = 24136285Sbrian bundle->cfg.autoload.max.timeout * SECTICKS; 24236285Sbrian bundle->autoload.timer.arg = bundle; 24336285Sbrian timer_Start(&bundle->autoload.timer); 24436285Sbrian bundle->autoload.done = time(NULL) + bundle->cfg.autoload.max.timeout; 24536285Sbrian } else 24636285Sbrian bundle_AutoLoadTimeout(bundle); 24736285Sbrian break; 24836285Sbrian } 24936285Sbrian bundle->autoload.running = (dl || bundle->cfg.autoload.min.timeout) ? 1 : 0; 25036285Sbrian } else { 25136285Sbrian int nlinks; 25236285Sbrian struct datalink *adl; 25336285Sbrian 25436285Sbrian for (nlinks = 0, adl = NULL, dl = bundle->links; dl; dl = dl->next) 25536285Sbrian if (dl->state == DATALINK_OPEN) { 25636465Sbrian if (dl->physical->type == PHYS_AUTO) 25736285Sbrian adl = dl; 25836285Sbrian if (++nlinks > 1 && adl) { 25936285Sbrian if (bundle->cfg.autoload.min.timeout) { 26036285Sbrian bundle->autoload.timer.func = bundle_AutoLoadTimeout; 26136285Sbrian bundle->autoload.timer.name = "autoload down"; 26236285Sbrian bundle->autoload.timer.load = 26336285Sbrian bundle->cfg.autoload.min.timeout * SECTICKS; 26436285Sbrian bundle->autoload.timer.arg = bundle; 26536285Sbrian timer_Start(&bundle->autoload.timer); 26636285Sbrian bundle->autoload.done = 26736285Sbrian time(NULL) + bundle->cfg.autoload.min.timeout; 26836285Sbrian } 26936285Sbrian break; 27036285Sbrian } 27136285Sbrian } 27236285Sbrian 27336285Sbrian bundle->autoload.running = 1; 27436285Sbrian } 27536285Sbrian 27636285Sbrian bundle->autoload.comingup = up ? 1 : 0; 27736285Sbrian} 27836285Sbrian 27936285Sbrianstatic void 28036285Sbrianbundle_StopAutoLoadTimer(struct bundle *bundle) 28136285Sbrian{ 28236285Sbrian timer_Stop(&bundle->autoload.timer); 28336285Sbrian bundle->autoload.done = 0; 28436285Sbrian} 28536285Sbrian 28636285Sbrianstatic int 28736285Sbrianbundle_RemainingAutoLoadTime(struct bundle *bundle) 28836285Sbrian{ 28936285Sbrian if (bundle->autoload.done) 29036285Sbrian return bundle->autoload.done - time(NULL); 29136285Sbrian return -1; 29236285Sbrian} 29336285Sbrian 29436928Sbrianstatic void 29536928Sbrianbundle_LinkAdded(struct bundle *bundle, struct datalink *dl) 29636928Sbrian{ 29736928Sbrian bundle->phys_type.all |= dl->physical->type; 29836928Sbrian if (dl->state == DATALINK_OPEN) 29936928Sbrian bundle->phys_type.open |= dl->physical->type; 30036285Sbrian 30136928Sbrian /* Note: We only re-add links that are DATALINK_OPEN */ 30236928Sbrian if (dl->physical->type == PHYS_AUTO && 30336928Sbrian bundle->autoload.timer.state == TIMER_STOPPED && 30436928Sbrian dl->state != DATALINK_OPEN && 30536928Sbrian bundle->phase == PHASE_NETWORK) 30636928Sbrian bundle->autoload.running = 1; 30736928Sbrian 30836928Sbrian if ((bundle->phys_type.open & (PHYS_DEDICATED|PHYS_DDIAL)) 30936928Sbrian != bundle->phys_type.open && bundle->idle.timer.state == TIMER_STOPPED) 31036928Sbrian /* We may need to start our idle timer */ 31136928Sbrian bundle_StartIdleTimer(bundle); 31236928Sbrian} 31336928Sbrian 31438174Sbrianvoid 31536928Sbrianbundle_LinksRemoved(struct bundle *bundle) 31636928Sbrian{ 31736928Sbrian struct datalink *dl; 31836928Sbrian 31936928Sbrian bundle->phys_type.all = bundle->phys_type.open = 0; 32036928Sbrian for (dl = bundle->links; dl; dl = dl->next) 32136928Sbrian bundle_LinkAdded(bundle, dl); 32236928Sbrian 32336928Sbrian if ((bundle->phys_type.open & (PHYS_DEDICATED|PHYS_DDIAL)) 32436928Sbrian == bundle->phys_type.open) 32536928Sbrian bundle_StopIdleTimer(bundle); 32636928Sbrian} 32736928Sbrian 32836928Sbrianstatic void 32936285Sbrianbundle_LayerUp(void *v, struct fsm *fp) 33036285Sbrian{ 33136285Sbrian /* 33236285Sbrian * The given fsm is now up 33336928Sbrian * If it's an LCP, adjust our phys_mode.open value. 33436285Sbrian * If it's an LCP set our mtu (if we're multilink, add up the link 33536285Sbrian * speeds and set the MRRU) and start our autoload timer. 33636285Sbrian * If it's an NCP, tell our -background parent to go away. 33736285Sbrian * If it's the first NCP, start the idle timer. 33836285Sbrian */ 33936285Sbrian struct bundle *bundle = (struct bundle *)v; 34036285Sbrian 34136285Sbrian if (fp->proto == PROTO_LCP) { 34236928Sbrian struct physical *p = link2physical(fp->link); 34336928Sbrian 34436928Sbrian bundle_LinkAdded(bundle, p->dl); 34536285Sbrian if (bundle->ncp.mp.active) { 34636285Sbrian struct datalink *dl; 34736285Sbrian 34840561Sbrian bundle->ifSpeed = 0; 34936285Sbrian for (dl = bundle->links; dl; dl = dl->next) 35036285Sbrian if (dl->state == DATALINK_OPEN) 35140561Sbrian bundle->ifSpeed += modem_Speed(dl->physical); 35236285Sbrian tun_configure(bundle, bundle->ncp.mp.peer_mrru); 35336285Sbrian bundle->autoload.running = 1; 35436285Sbrian } else { 35540561Sbrian bundle->ifSpeed = modem_Speed(p); 35636285Sbrian tun_configure(bundle, fsm2lcp(fp)->his_mru); 35736285Sbrian } 35836285Sbrian } else if (fp->proto == PROTO_IPCP) { 35936285Sbrian bundle_StartIdleTimer(bundle); 36036285Sbrian bundle_Notify(bundle, EX_NORMAL); 36136285Sbrian } 36236285Sbrian} 36336285Sbrian 36436285Sbrianstatic void 36536285Sbrianbundle_LayerDown(void *v, struct fsm *fp) 36636285Sbrian{ 36736285Sbrian /* 36836285Sbrian * The given FSM has been told to come down. 36936285Sbrian * If it's our last NCP, stop the idle timer. 37036928Sbrian * If it's an LCP, adjust our phys_type.open value and any timers. 37136312Sbrian * If it's an LCP and we're in multilink mode, adjust our tun 37236312Sbrian * speed and make sure our minimum sequence number is adjusted. 37336285Sbrian */ 37436285Sbrian 37536285Sbrian struct bundle *bundle = (struct bundle *)v; 37636285Sbrian 37736285Sbrian if (fp->proto == PROTO_IPCP) 37836285Sbrian bundle_StopIdleTimer(bundle); 37936928Sbrian else if (fp->proto == PROTO_LCP) { 38036928Sbrian bundle_LinksRemoved(bundle); /* adjust timers & phys_type values */ 38136928Sbrian if (bundle->ncp.mp.active) { 38236928Sbrian struct datalink *dl; 38336928Sbrian struct datalink *lost; 38436285Sbrian 38540561Sbrian bundle->ifSpeed = 0; 38636928Sbrian lost = NULL; 38736928Sbrian for (dl = bundle->links; dl; dl = dl->next) 38836928Sbrian if (fp == &dl->physical->link.lcp.fsm) 38936928Sbrian lost = dl; 39036928Sbrian else if (dl->state == DATALINK_OPEN) 39140561Sbrian bundle->ifSpeed += modem_Speed(dl->physical); 39236312Sbrian 39340561Sbrian if (bundle->ifSpeed) 39436928Sbrian /* Don't configure down to a speed of 0 */ 39536928Sbrian tun_configure(bundle, bundle->ncp.mp.link.lcp.his_mru); 39636312Sbrian 39736928Sbrian if (lost) 39836928Sbrian mp_LinkLost(&bundle->ncp.mp, lost); 39936928Sbrian else 40037019Sbrian log_Printf(LogALERT, "Oops, lost an unrecognised datalink (%s) !\n", 40136928Sbrian fp->link->name); 40236928Sbrian } 40336285Sbrian } 40436285Sbrian} 40536285Sbrian 40636285Sbrianstatic void 40736285Sbrianbundle_LayerFinish(void *v, struct fsm *fp) 40836285Sbrian{ 40936285Sbrian /* The given fsm is now down (fp cannot be NULL) 41036285Sbrian * 41136285Sbrian * If it's the last LCP, fsm_Down all NCPs 41236285Sbrian * If it's the last NCP, fsm_Close all LCPs 41336285Sbrian */ 41436285Sbrian 41536285Sbrian struct bundle *bundle = (struct bundle *)v; 41636285Sbrian struct datalink *dl; 41736285Sbrian 41836285Sbrian if (fp->proto == PROTO_IPCP) { 41936285Sbrian if (bundle_Phase(bundle) != PHASE_DEAD) 42036285Sbrian bundle_NewPhase(bundle, PHASE_TERMINATE); 42136285Sbrian for (dl = bundle->links; dl; dl = dl->next) 42237007Sbrian datalink_Close(dl, CLOSE_NORMAL); 42337060Sbrian fsm2initial(fp); 42436285Sbrian } else if (fp->proto == PROTO_LCP) { 42536285Sbrian int others_active; 42636285Sbrian 42736285Sbrian others_active = 0; 42836285Sbrian for (dl = bundle->links; dl; dl = dl->next) 42936285Sbrian if (fp != &dl->physical->link.lcp.fsm && 43036285Sbrian dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) 43136285Sbrian others_active++; 43236285Sbrian 43337060Sbrian if (!others_active) 43437060Sbrian fsm2initial(&bundle->ncp.ipcp.fsm); 43536285Sbrian } 43636285Sbrian} 43736285Sbrian 43836285Sbrianint 43936285Sbrianbundle_LinkIsUp(const struct bundle *bundle) 44036285Sbrian{ 44136285Sbrian return bundle->ncp.ipcp.fsm.state == ST_OPENED; 44236285Sbrian} 44336285Sbrian 44436285Sbrianvoid 44537007Sbrianbundle_Close(struct bundle *bundle, const char *name, int how) 44636285Sbrian{ 44736285Sbrian /* 44836285Sbrian * Please close the given datalink. 44936285Sbrian * If name == NULL or name is the last datalink, fsm_Close all NCPs 45036285Sbrian * (except our MP) 45136285Sbrian * If it isn't the last datalink, just Close that datalink. 45236285Sbrian */ 45336285Sbrian 45436285Sbrian struct datalink *dl, *this_dl; 45536285Sbrian int others_active; 45636285Sbrian 45736285Sbrian others_active = 0; 45836285Sbrian this_dl = NULL; 45936285Sbrian 46036285Sbrian for (dl = bundle->links; dl; dl = dl->next) { 46136285Sbrian if (name && !strcasecmp(name, dl->name)) 46236285Sbrian this_dl = dl; 46336285Sbrian if (name == NULL || this_dl == dl) { 46437007Sbrian switch (how) { 46537007Sbrian case CLOSE_LCP: 46637007Sbrian datalink_DontHangup(dl); 46737007Sbrian /* fall through */ 46837007Sbrian case CLOSE_STAYDOWN: 46937007Sbrian datalink_StayDown(dl); 47037007Sbrian break; 47137007Sbrian } 47236285Sbrian } else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) 47336285Sbrian others_active++; 47436285Sbrian } 47536285Sbrian 47636285Sbrian if (name && this_dl == NULL) { 47736285Sbrian log_Printf(LogWARN, "%s: Invalid datalink name\n", name); 47836285Sbrian return; 47936285Sbrian } 48036285Sbrian 48136285Sbrian if (!others_active) { 48236285Sbrian bundle_StopIdleTimer(bundle); 48336285Sbrian bundle_StopAutoLoadTimer(bundle); 48436285Sbrian if (bundle->ncp.ipcp.fsm.state > ST_CLOSED || 48536285Sbrian bundle->ncp.ipcp.fsm.state == ST_STARTING) 48636285Sbrian fsm_Close(&bundle->ncp.ipcp.fsm); 48736285Sbrian else { 48837060Sbrian fsm2initial(&bundle->ncp.ipcp.fsm); 48936285Sbrian for (dl = bundle->links; dl; dl = dl->next) 49037007Sbrian datalink_Close(dl, how); 49136285Sbrian } 49236285Sbrian } else if (this_dl && this_dl->state != DATALINK_CLOSED && 49336285Sbrian this_dl->state != DATALINK_HANGUP) 49437007Sbrian datalink_Close(this_dl, how); 49536285Sbrian} 49636285Sbrian 49736285Sbrianvoid 49837018Sbrianbundle_Down(struct bundle *bundle, int how) 49936285Sbrian{ 50036285Sbrian struct datalink *dl; 50136285Sbrian 50236285Sbrian for (dl = bundle->links; dl; dl = dl->next) 50337018Sbrian datalink_Down(dl, how); 50436285Sbrian} 50536285Sbrian 50636285Sbrianstatic int 50736285Sbrianbundle_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n) 50836285Sbrian{ 50936285Sbrian struct bundle *bundle = descriptor2bundle(d); 51036285Sbrian struct datalink *dl; 51136285Sbrian int result, want, queued, nlinks; 51236285Sbrian 51336285Sbrian result = 0; 51436285Sbrian 51536285Sbrian /* If there are aren't many packets queued, look for some more. */ 51636285Sbrian for (nlinks = 0, dl = bundle->links; dl; dl = dl->next) 51736285Sbrian nlinks++; 51836285Sbrian 51936285Sbrian if (nlinks) { 52038557Sbrian queued = r ? bundle_FillQueues(bundle) : ip_QueueLen(&bundle->ncp.ipcp); 52136285Sbrian if (bundle->autoload.running) { 52236285Sbrian if (queued < bundle->cfg.autoload.max.packets) { 52336285Sbrian if (queued > bundle->cfg.autoload.min.packets) 52436285Sbrian bundle_StopAutoLoadTimer(bundle); 52536285Sbrian else if (bundle->autoload.timer.state != TIMER_RUNNING || 52636285Sbrian bundle->autoload.comingup) 52736285Sbrian bundle_StartAutoLoadTimer(bundle, 0); 52836285Sbrian } else if (bundle->autoload.timer.state != TIMER_RUNNING || 52936285Sbrian !bundle->autoload.comingup) 53036285Sbrian bundle_StartAutoLoadTimer(bundle, 1); 53136285Sbrian } 53236285Sbrian 53336928Sbrian if (r && (bundle->phase == PHASE_NETWORK || 53436928Sbrian bundle->phys_type.all & PHYS_AUTO)) { 53536285Sbrian /* enough surplus so that we can tell if we're getting swamped */ 53636285Sbrian want = bundle->cfg.autoload.max.packets + nlinks * 2; 53736285Sbrian /* but at least 20 packets ! */ 53836285Sbrian if (want < 20) 53936285Sbrian want = 20; 54036285Sbrian if (queued < want) { 54136285Sbrian /* Not enough - select() for more */ 54238544Sbrian if (bundle->choked.timer.state == TIMER_RUNNING) 54338544Sbrian timer_Stop(&bundle->choked.timer); /* Not needed any more */ 54436285Sbrian FD_SET(bundle->dev.fd, r); 54536285Sbrian if (*n < bundle->dev.fd + 1) 54636285Sbrian *n = bundle->dev.fd + 1; 54736452Sbrian log_Printf(LogTIMER, "%s: fdset(r) %d\n", TUN_NAME, bundle->dev.fd); 54836285Sbrian result++; 54938544Sbrian } else if (bundle->choked.timer.state == TIMER_STOPPED) { 55038544Sbrian bundle->choked.timer.func = bundle_ClearQueues; 55138544Sbrian bundle->choked.timer.name = "output choke"; 55238544Sbrian bundle->choked.timer.load = bundle->cfg.choked.timeout * SECTICKS; 55338544Sbrian bundle->choked.timer.arg = bundle; 55438544Sbrian timer_Start(&bundle->choked.timer); 55536285Sbrian } 55636285Sbrian } 55736285Sbrian } 55836285Sbrian 55936714Sbrian /* Which links need a select() ? */ 56036714Sbrian for (dl = bundle->links; dl; dl = dl->next) 56136714Sbrian result += descriptor_UpdateSet(&dl->desc, r, w, e, n); 56236714Sbrian 56336285Sbrian /* 56436285Sbrian * This *MUST* be called after the datalink UpdateSet()s as it 56536285Sbrian * might be ``holding'' one of the datalinks (death-row) and 56636285Sbrian * wants to be able to de-select() it from the descriptor set. 56736285Sbrian */ 56836314Sbrian result += descriptor_UpdateSet(&bundle->ncp.mp.server.desc, r, w, e, n); 56936285Sbrian 57036285Sbrian return result; 57136285Sbrian} 57236285Sbrian 57336285Sbrianstatic int 57436285Sbrianbundle_IsSet(struct descriptor *d, const fd_set *fdset) 57536285Sbrian{ 57636285Sbrian struct bundle *bundle = descriptor2bundle(d); 57736285Sbrian struct datalink *dl; 57836285Sbrian 57936285Sbrian for (dl = bundle->links; dl; dl = dl->next) 58036285Sbrian if (descriptor_IsSet(&dl->desc, fdset)) 58136285Sbrian return 1; 58236285Sbrian 58336285Sbrian if (descriptor_IsSet(&bundle->ncp.mp.server.desc, fdset)) 58436285Sbrian return 1; 58536285Sbrian 58636285Sbrian return FD_ISSET(bundle->dev.fd, fdset); 58736285Sbrian} 58836285Sbrian 58936285Sbrianstatic void 59036285Sbrianbundle_DescriptorRead(struct descriptor *d, struct bundle *bundle, 59136285Sbrian const fd_set *fdset) 59236285Sbrian{ 59336285Sbrian struct datalink *dl; 59436285Sbrian 59536285Sbrian if (descriptor_IsSet(&bundle->ncp.mp.server.desc, fdset)) 59636285Sbrian descriptor_Read(&bundle->ncp.mp.server.desc, bundle, fdset); 59736285Sbrian 59836285Sbrian for (dl = bundle->links; dl; dl = dl->next) 59936285Sbrian if (descriptor_IsSet(&dl->desc, fdset)) 60036285Sbrian descriptor_Read(&dl->desc, bundle, fdset); 60136285Sbrian 60236285Sbrian if (FD_ISSET(bundle->dev.fd, fdset)) { 60336285Sbrian struct tun_data tun; 60436285Sbrian int n, pri; 60536285Sbrian 60636285Sbrian /* something to read from tun */ 60736285Sbrian n = read(bundle->dev.fd, &tun, sizeof tun); 60836285Sbrian if (n < 0) { 60937019Sbrian log_Printf(LogWARN, "read from %s: %s\n", TUN_NAME, strerror(errno)); 61036285Sbrian return; 61136285Sbrian } 61236285Sbrian n -= sizeof tun - sizeof tun.data; 61336285Sbrian if (n <= 0) { 61437019Sbrian log_Printf(LogERROR, "read from %s: Only %d bytes read ?\n", TUN_NAME, n); 61536285Sbrian return; 61636285Sbrian } 61736285Sbrian if (!tun_check_header(tun, AF_INET)) 61836285Sbrian return; 61936285Sbrian 62036285Sbrian if (((struct ip *)tun.data)->ip_dst.s_addr == 62136285Sbrian bundle->ncp.ipcp.my_ip.s_addr) { 62236285Sbrian /* we've been asked to send something addressed *to* us :( */ 62336285Sbrian if (Enabled(bundle, OPT_LOOPBACK)) { 62436285Sbrian pri = PacketCheck(bundle, tun.data, n, &bundle->filter.in); 62536285Sbrian if (pri >= 0) { 62636285Sbrian struct mbuf *bp; 62736285Sbrian 62836285Sbrian#ifndef NOALIAS 62937191Sbrian if (bundle->AliasEnabled) { 63037191Sbrian PacketAliasIn(tun.data, sizeof tun.data); 63136285Sbrian n = ntohs(((struct ip *)tun.data)->ip_len); 63236285Sbrian } 63336285Sbrian#endif 63436285Sbrian bp = mbuf_Alloc(n, MB_IPIN); 63536285Sbrian memcpy(MBUF_CTOP(bp), tun.data, n); 63636285Sbrian ip_Input(bundle, bp); 63736285Sbrian log_Printf(LogDEBUG, "Looped back packet addressed to myself\n"); 63836285Sbrian } 63936285Sbrian return; 64036285Sbrian } else 64136285Sbrian log_Printf(LogDEBUG, "Oops - forwarding packet addressed to myself\n"); 64236285Sbrian } 64336285Sbrian 64436285Sbrian /* 64536285Sbrian * Process on-demand dialup. Output packets are queued within tunnel 64636285Sbrian * device until IPCP is opened. 64736285Sbrian */ 64836285Sbrian 64936285Sbrian if (bundle_Phase(bundle) == PHASE_DEAD) { 65036285Sbrian /* 65136285Sbrian * Note, we must be in AUTO mode :-/ otherwise our interface should 65236285Sbrian * *not* be UP and we can't receive data 65336285Sbrian */ 65436285Sbrian if ((pri = PacketCheck(bundle, tun.data, n, &bundle->filter.dial)) >= 0) 65537955Sbrian bundle_Open(bundle, NULL, PHYS_AUTO, 0); 65636285Sbrian else 65736285Sbrian /* 65836285Sbrian * Drop the packet. If we were to queue it, we'd just end up with 65936285Sbrian * a pile of timed-out data in our output queue by the time we get 66036285Sbrian * around to actually dialing. We'd also prematurely reach the 66136285Sbrian * threshold at which we stop select()ing to read() the tun 66236285Sbrian * device - breaking auto-dial. 66336285Sbrian */ 66436285Sbrian return; 66536285Sbrian } 66636285Sbrian 66736285Sbrian pri = PacketCheck(bundle, tun.data, n, &bundle->filter.out); 66836285Sbrian if (pri >= 0) { 66936285Sbrian#ifndef NOALIAS 67037191Sbrian if (bundle->AliasEnabled) { 67137191Sbrian PacketAliasOut(tun.data, sizeof tun.data); 67236285Sbrian n = ntohs(((struct ip *)tun.data)->ip_len); 67336285Sbrian } 67436285Sbrian#endif 67538557Sbrian ip_Enqueue(&bundle->ncp.ipcp, pri, tun.data, n); 67636285Sbrian } 67736285Sbrian } 67836285Sbrian} 67936285Sbrian 68037141Sbrianstatic int 68136285Sbrianbundle_DescriptorWrite(struct descriptor *d, struct bundle *bundle, 68236285Sbrian const fd_set *fdset) 68336285Sbrian{ 68436285Sbrian struct datalink *dl; 68537141Sbrian int result = 0; 68636285Sbrian 68736285Sbrian /* This is not actually necessary as struct mpserver doesn't Write() */ 68836285Sbrian if (descriptor_IsSet(&bundle->ncp.mp.server.desc, fdset)) 68936285Sbrian descriptor_Write(&bundle->ncp.mp.server.desc, bundle, fdset); 69036285Sbrian 69136285Sbrian for (dl = bundle->links; dl; dl = dl->next) 69236285Sbrian if (descriptor_IsSet(&dl->desc, fdset)) 69337141Sbrian result += descriptor_Write(&dl->desc, bundle, fdset); 69437141Sbrian 69537141Sbrian return result; 69636285Sbrian} 69736285Sbrian 69836709Sbrianvoid 69936452Sbrianbundle_LockTun(struct bundle *bundle) 70036452Sbrian{ 70136452Sbrian FILE *lockfile; 70236452Sbrian char pidfile[MAXPATHLEN]; 70336285Sbrian 70436452Sbrian snprintf(pidfile, sizeof pidfile, "%stun%d.pid", _PATH_VARRUN, bundle->unit); 70536452Sbrian lockfile = ID0fopen(pidfile, "w"); 70636452Sbrian if (lockfile != NULL) { 70736452Sbrian fprintf(lockfile, "%d\n", (int)getpid()); 70836452Sbrian fclose(lockfile); 70936452Sbrian } 71036452Sbrian#ifndef RELEASE_CRUNCH 71136452Sbrian else 71236452Sbrian log_Printf(LogERROR, "Warning: Can't create %s: %s\n", 71336452Sbrian pidfile, strerror(errno)); 71436452Sbrian#endif 71536452Sbrian} 71636452Sbrian 71736452Sbrianstatic void 71836452Sbrianbundle_UnlockTun(struct bundle *bundle) 71936452Sbrian{ 72036452Sbrian char pidfile[MAXPATHLEN]; 72136452Sbrian 72236452Sbrian snprintf(pidfile, sizeof pidfile, "%stun%d.pid", _PATH_VARRUN, bundle->unit); 72336452Sbrian ID0unlink(pidfile); 72436452Sbrian} 72536452Sbrian 72636285Sbrianstruct bundle * 72736467Sbrianbundle_Create(const char *prefix, int type, const char **argv) 72836285Sbrian{ 72936285Sbrian int s, enoentcount, err; 73040561Sbrian const char *ifname; 73136285Sbrian struct ifreq ifrq; 73236285Sbrian static struct bundle bundle; /* there can be only one */ 73336285Sbrian 73440561Sbrian if (bundle.iface != NULL) { /* Already allocated ! */ 73537019Sbrian log_Printf(LogALERT, "bundle_Create: There's only one BUNDLE !\n"); 73636285Sbrian return NULL; 73736285Sbrian } 73836285Sbrian 73936285Sbrian err = ENOENT; 74036285Sbrian enoentcount = 0; 74136285Sbrian for (bundle.unit = 0; ; bundle.unit++) { 74236285Sbrian snprintf(bundle.dev.Name, sizeof bundle.dev.Name, "%s%d", 74336285Sbrian prefix, bundle.unit); 74436285Sbrian bundle.dev.fd = ID0open(bundle.dev.Name, O_RDWR); 74536285Sbrian if (bundle.dev.fd >= 0) 74636285Sbrian break; 74736285Sbrian else if (errno == ENXIO) { 74836285Sbrian err = errno; 74936285Sbrian break; 75036285Sbrian } else if (errno == ENOENT) { 75136285Sbrian if (++enoentcount > 2) 75236285Sbrian break; 75336285Sbrian } else 75436285Sbrian err = errno; 75536285Sbrian } 75636285Sbrian 75736285Sbrian if (bundle.dev.fd < 0) { 75836285Sbrian log_Printf(LogWARN, "No available tunnel devices found (%s).\n", 75936285Sbrian strerror(err)); 76036285Sbrian return NULL; 76136285Sbrian } 76236285Sbrian 76336285Sbrian log_SetTun(bundle.unit); 76436467Sbrian bundle.argv = argv; 76540679Sbrian bundle.argv0 = argv[0]; 76640679Sbrian bundle.argv1 = argv[1]; 76736285Sbrian 76836285Sbrian s = socket(AF_INET, SOCK_DGRAM, 0); 76936285Sbrian if (s < 0) { 77036285Sbrian log_Printf(LogERROR, "bundle_Create: socket(): %s\n", strerror(errno)); 77136285Sbrian close(bundle.dev.fd); 77236285Sbrian return NULL; 77336285Sbrian } 77436285Sbrian 77540561Sbrian ifname = strrchr(bundle.dev.Name, '/'); 77640561Sbrian if (ifname == NULL) 77740561Sbrian ifname = bundle.dev.Name; 77836285Sbrian else 77940561Sbrian ifname++; 78036285Sbrian 78140561Sbrian bundle.iface = iface_Create(ifname); 78240561Sbrian if (bundle.iface == NULL) { 78340561Sbrian close(s); 78440561Sbrian close(bundle.dev.fd); 78540561Sbrian return NULL; 78640561Sbrian } 78740561Sbrian 78836285Sbrian /* 78936285Sbrian * Now, bring up the interface. 79036285Sbrian */ 79136285Sbrian memset(&ifrq, '\0', sizeof ifrq); 79240561Sbrian strncpy(ifrq.ifr_name, ifname, sizeof ifrq.ifr_name - 1); 79336285Sbrian ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0'; 79436285Sbrian if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { 79537019Sbrian log_Printf(LogERROR, "bundle_Create: ioctl(SIOCGIFFLAGS): %s\n", 79636285Sbrian strerror(errno)); 79736285Sbrian close(s); 79840561Sbrian iface_Destroy(bundle.iface); 79940561Sbrian bundle.iface = NULL; 80036285Sbrian close(bundle.dev.fd); 80136285Sbrian return NULL; 80236285Sbrian } 80336285Sbrian ifrq.ifr_flags |= IFF_UP; 80436285Sbrian if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { 80537019Sbrian log_Printf(LogERROR, "bundle_Create: ioctl(SIOCSIFFLAGS): %s\n", 80636285Sbrian strerror(errno)); 80736285Sbrian close(s); 80840561Sbrian iface_Destroy(bundle.iface); 80940561Sbrian bundle.iface = NULL; 81036285Sbrian close(bundle.dev.fd); 81136285Sbrian return NULL; 81236285Sbrian } 81336285Sbrian 81436285Sbrian close(s); 81536285Sbrian 81640561Sbrian log_Printf(LogPHASE, "Using interface: %s\n", ifname); 81736285Sbrian 81840561Sbrian bundle.ifSpeed = 0; 81936285Sbrian 82036285Sbrian bundle.routing_seq = 0; 82136285Sbrian bundle.phase = PHASE_DEAD; 82236285Sbrian bundle.CleaningUp = 0; 82337191Sbrian bundle.AliasEnabled = 0; 82436285Sbrian 82536285Sbrian bundle.fsm.LayerStart = bundle_LayerStart; 82636285Sbrian bundle.fsm.LayerUp = bundle_LayerUp; 82736285Sbrian bundle.fsm.LayerDown = bundle_LayerDown; 82836285Sbrian bundle.fsm.LayerFinish = bundle_LayerFinish; 82936285Sbrian bundle.fsm.object = &bundle; 83036285Sbrian 83136285Sbrian bundle.cfg.idle_timeout = NCP_IDLE_TIMEOUT; 83236285Sbrian *bundle.cfg.auth.name = '\0'; 83336285Sbrian *bundle.cfg.auth.key = '\0'; 83436285Sbrian bundle.cfg.opt = OPT_SROUTES | OPT_IDCHECK | OPT_LOOPBACK | 83536285Sbrian OPT_THROUGHPUT | OPT_UTMP; 83636285Sbrian *bundle.cfg.label = '\0'; 83736285Sbrian bundle.cfg.mtu = DEF_MTU; 83836285Sbrian bundle.cfg.autoload.max.packets = 0; 83936285Sbrian bundle.cfg.autoload.max.timeout = 0; 84036285Sbrian bundle.cfg.autoload.min.packets = 0; 84136285Sbrian bundle.cfg.autoload.min.timeout = 0; 84238544Sbrian bundle.cfg.choked.timeout = CHOKED_TIMEOUT; 84336928Sbrian bundle.phys_type.all = type; 84436928Sbrian bundle.phys_type.open = 0; 84536285Sbrian 84636285Sbrian bundle.links = datalink_Create("deflink", &bundle, type); 84736285Sbrian if (bundle.links == NULL) { 84837019Sbrian log_Printf(LogALERT, "Cannot create data link: %s\n", strerror(errno)); 84940561Sbrian iface_Destroy(bundle.iface); 85040561Sbrian bundle.iface = NULL; 85136285Sbrian close(bundle.dev.fd); 85236285Sbrian return NULL; 85336285Sbrian } 85436285Sbrian 85536285Sbrian bundle.desc.type = BUNDLE_DESCRIPTOR; 85636285Sbrian bundle.desc.UpdateSet = bundle_UpdateSet; 85736285Sbrian bundle.desc.IsSet = bundle_IsSet; 85836285Sbrian bundle.desc.Read = bundle_DescriptorRead; 85936285Sbrian bundle.desc.Write = bundle_DescriptorWrite; 86036285Sbrian 86136285Sbrian mp_Init(&bundle.ncp.mp, &bundle); 86236285Sbrian 86336285Sbrian /* Send over the first physical link by default */ 86436285Sbrian ipcp_Init(&bundle.ncp.ipcp, &bundle, &bundle.links->physical->link, 86536285Sbrian &bundle.fsm); 86636285Sbrian 86736285Sbrian memset(&bundle.filter, '\0', sizeof bundle.filter); 86836285Sbrian bundle.filter.in.fragok = bundle.filter.in.logok = 1; 86936285Sbrian bundle.filter.in.name = "IN"; 87036285Sbrian bundle.filter.out.fragok = bundle.filter.out.logok = 1; 87136285Sbrian bundle.filter.out.name = "OUT"; 87236285Sbrian bundle.filter.dial.name = "DIAL"; 87336285Sbrian bundle.filter.dial.logok = 1; 87436285Sbrian bundle.filter.alive.name = "ALIVE"; 87536285Sbrian bundle.filter.alive.logok = 1; 87636285Sbrian memset(&bundle.idle.timer, '\0', sizeof bundle.idle.timer); 87736285Sbrian bundle.idle.done = 0; 87836285Sbrian bundle.notify.fd = -1; 87936285Sbrian memset(&bundle.autoload.timer, '\0', sizeof bundle.autoload.timer); 88036285Sbrian bundle.autoload.done = 0; 88136285Sbrian bundle.autoload.running = 0; 88238544Sbrian memset(&bundle.choked.timer, '\0', sizeof bundle.choked.timer); 88336285Sbrian 88436285Sbrian /* Clean out any leftover crud */ 88540561Sbrian iface_Clear(bundle.iface, IFACE_CLEAR_ALL); 88636285Sbrian 88736452Sbrian bundle_LockTun(&bundle); 88836452Sbrian 88936285Sbrian return &bundle; 89036285Sbrian} 89136285Sbrian 89236285Sbrianstatic void 89336285Sbrianbundle_DownInterface(struct bundle *bundle) 89436285Sbrian{ 89536285Sbrian struct ifreq ifrq; 89636285Sbrian int s; 89736285Sbrian 89836285Sbrian route_IfDelete(bundle, 1); 89936285Sbrian 90036285Sbrian s = ID0socket(AF_INET, SOCK_DGRAM, 0); 90136285Sbrian if (s < 0) { 90236285Sbrian log_Printf(LogERROR, "bundle_DownInterface: socket: %s\n", strerror(errno)); 90336285Sbrian return; 90436285Sbrian } 90536285Sbrian 90636285Sbrian memset(&ifrq, '\0', sizeof ifrq); 90740561Sbrian strncpy(ifrq.ifr_name, bundle->iface->name, sizeof ifrq.ifr_name - 1); 90836285Sbrian ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0'; 90936285Sbrian if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { 91036285Sbrian log_Printf(LogERROR, "bundle_DownInterface: ioctl(SIOCGIFFLAGS): %s\n", 91136285Sbrian strerror(errno)); 91236285Sbrian close(s); 91336285Sbrian return; 91436285Sbrian } 91536285Sbrian ifrq.ifr_flags &= ~IFF_UP; 91636285Sbrian if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { 91736285Sbrian log_Printf(LogERROR, "bundle_DownInterface: ioctl(SIOCSIFFLAGS): %s\n", 91836285Sbrian strerror(errno)); 91936285Sbrian close(s); 92036285Sbrian return; 92136285Sbrian } 92236285Sbrian close(s); 92336285Sbrian} 92436285Sbrian 92536285Sbrianvoid 92636285Sbrianbundle_Destroy(struct bundle *bundle) 92736285Sbrian{ 92836285Sbrian struct datalink *dl; 92936285Sbrian 93036285Sbrian /* 93136285Sbrian * Clean up the interface. We don't need to timer_Stop()s, mp_Down(), 93236285Sbrian * ipcp_CleanInterface() and bundle_DownInterface() unless we're getting 93336285Sbrian * out under exceptional conditions such as a descriptor exception. 93436285Sbrian */ 93536285Sbrian timer_Stop(&bundle->idle.timer); 93638544Sbrian timer_Stop(&bundle->choked.timer); 93736285Sbrian timer_Stop(&bundle->autoload.timer); 93836285Sbrian mp_Down(&bundle->ncp.mp); 93936285Sbrian ipcp_CleanInterface(&bundle->ncp.ipcp); 94036285Sbrian bundle_DownInterface(bundle); 94136452Sbrian 94236285Sbrian /* Again, these are all DATALINK_CLOSED unless we're abending */ 94336285Sbrian dl = bundle->links; 94436285Sbrian while (dl) 94536285Sbrian dl = datalink_Destroy(dl); 94636285Sbrian 94736452Sbrian close(bundle->dev.fd); 94836452Sbrian bundle_UnlockTun(bundle); 94936452Sbrian 95036285Sbrian /* In case we never made PHASE_NETWORK */ 95136285Sbrian bundle_Notify(bundle, EX_ERRDEAD); 95236285Sbrian 95340561Sbrian iface_Destroy(bundle->iface); 95440561Sbrian bundle->iface = NULL; 95536285Sbrian} 95636285Sbrian 95736285Sbrianstruct rtmsg { 95836285Sbrian struct rt_msghdr m_rtm; 95936285Sbrian char m_space[64]; 96036285Sbrian}; 96136285Sbrian 96236285Sbrianint 96336285Sbrianbundle_SetRoute(struct bundle *bundle, int cmd, struct in_addr dst, 96437927Sbrian struct in_addr gateway, struct in_addr mask, int bang, int ssh) 96536285Sbrian{ 96636285Sbrian struct rtmsg rtmes; 96736285Sbrian int s, nb, wb; 96836285Sbrian char *cp; 96936285Sbrian const char *cmdstr; 97036285Sbrian struct sockaddr_in rtdata; 97136285Sbrian int result = 1; 97236285Sbrian 97336285Sbrian if (bang) 97436285Sbrian cmdstr = (cmd == RTM_ADD ? "Add!" : "Delete!"); 97536285Sbrian else 97636285Sbrian cmdstr = (cmd == RTM_ADD ? "Add" : "Delete"); 97736285Sbrian s = ID0socket(PF_ROUTE, SOCK_RAW, 0); 97836285Sbrian if (s < 0) { 97936285Sbrian log_Printf(LogERROR, "bundle_SetRoute: socket(): %s\n", strerror(errno)); 98036285Sbrian return result; 98136285Sbrian } 98236285Sbrian memset(&rtmes, '\0', sizeof rtmes); 98336285Sbrian rtmes.m_rtm.rtm_version = RTM_VERSION; 98436285Sbrian rtmes.m_rtm.rtm_type = cmd; 98536285Sbrian rtmes.m_rtm.rtm_addrs = RTA_DST; 98636285Sbrian rtmes.m_rtm.rtm_seq = ++bundle->routing_seq; 98736285Sbrian rtmes.m_rtm.rtm_pid = getpid(); 98836285Sbrian rtmes.m_rtm.rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC; 98936285Sbrian 99040665Sbrian if (cmd == RTM_ADD || cmd == RTM_CHANGE) { 99140665Sbrian if (bundle->ncp.ipcp.cfg.sendpipe > 0) { 99240665Sbrian rtmes.m_rtm.rtm_rmx.rmx_sendpipe = bundle->ncp.ipcp.cfg.sendpipe; 99340665Sbrian rtmes.m_rtm.rtm_inits |= RTV_SPIPE; 99440665Sbrian } 99540665Sbrian if (bundle->ncp.ipcp.cfg.recvpipe > 0) { 99640665Sbrian rtmes.m_rtm.rtm_rmx.rmx_recvpipe = bundle->ncp.ipcp.cfg.recvpipe; 99740665Sbrian rtmes.m_rtm.rtm_inits |= RTV_RPIPE; 99840665Sbrian } 99940665Sbrian } 100040665Sbrian 100136285Sbrian memset(&rtdata, '\0', sizeof rtdata); 100236285Sbrian rtdata.sin_len = sizeof rtdata; 100336285Sbrian rtdata.sin_family = AF_INET; 100436285Sbrian rtdata.sin_port = 0; 100536285Sbrian rtdata.sin_addr = dst; 100636285Sbrian 100736285Sbrian cp = rtmes.m_space; 100836285Sbrian memcpy(cp, &rtdata, rtdata.sin_len); 100936285Sbrian cp += rtdata.sin_len; 101036285Sbrian if (cmd == RTM_ADD) { 101136285Sbrian if (gateway.s_addr == INADDR_ANY) { 101240561Sbrian log_Printf(LogERROR, "bundle_SetRoute: Cannot add a route with" 101340561Sbrian " destination 0.0.0.0\n"); 101440561Sbrian close(s); 101540561Sbrian return result; 101636285Sbrian } else { 101736285Sbrian rtdata.sin_addr = gateway; 101836285Sbrian memcpy(cp, &rtdata, rtdata.sin_len); 101936285Sbrian cp += rtdata.sin_len; 102036285Sbrian rtmes.m_rtm.rtm_addrs |= RTA_GATEWAY; 102136285Sbrian } 102236285Sbrian } 102336285Sbrian 102436285Sbrian if (dst.s_addr == INADDR_ANY) 102536285Sbrian mask.s_addr = INADDR_ANY; 102636285Sbrian 102736285Sbrian if (cmd == RTM_ADD || dst.s_addr == INADDR_ANY) { 102836285Sbrian rtdata.sin_addr = mask; 102936285Sbrian memcpy(cp, &rtdata, rtdata.sin_len); 103036285Sbrian cp += rtdata.sin_len; 103136285Sbrian rtmes.m_rtm.rtm_addrs |= RTA_NETMASK; 103236285Sbrian } 103336285Sbrian 103436285Sbrian nb = cp - (char *) &rtmes; 103536285Sbrian rtmes.m_rtm.rtm_msglen = nb; 103636285Sbrian wb = ID0write(s, &rtmes, nb); 103736285Sbrian if (wb < 0) { 103836285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute failure:\n"); 103936285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Cmd = %s\n", cmdstr); 104036285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Dst = %s\n", inet_ntoa(dst)); 104136285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Gateway = %s\n", inet_ntoa(gateway)); 104236285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Mask = %s\n", inet_ntoa(mask)); 104336285Sbrianfailed: 104436285Sbrian if (cmd == RTM_ADD && (rtmes.m_rtm.rtm_errno == EEXIST || 104536285Sbrian (rtmes.m_rtm.rtm_errno == 0 && errno == EEXIST))) { 104636285Sbrian if (!bang) { 104736285Sbrian log_Printf(LogWARN, "Add route failed: %s already exists\n", 104840665Sbrian dst.s_addr == 0 ? "default" : inet_ntoa(dst)); 104936285Sbrian result = 0; /* Don't add to our dynamic list */ 105036285Sbrian } else { 105136285Sbrian rtmes.m_rtm.rtm_type = cmd = RTM_CHANGE; 105236285Sbrian if ((wb = ID0write(s, &rtmes, nb)) < 0) 105336285Sbrian goto failed; 105436285Sbrian } 105536285Sbrian } else if (cmd == RTM_DELETE && 105636285Sbrian (rtmes.m_rtm.rtm_errno == ESRCH || 105736285Sbrian (rtmes.m_rtm.rtm_errno == 0 && errno == ESRCH))) { 105836285Sbrian if (!bang) 105936285Sbrian log_Printf(LogWARN, "Del route failed: %s: Non-existent\n", 106036285Sbrian inet_ntoa(dst)); 106137927Sbrian } else if (rtmes.m_rtm.rtm_errno == 0) { 106237927Sbrian if (!ssh || errno != ENETUNREACH) 106337927Sbrian log_Printf(LogWARN, "%s route failed: %s: errno: %s\n", cmdstr, 106437927Sbrian inet_ntoa(dst), strerror(errno)); 106537927Sbrian } else 106636285Sbrian log_Printf(LogWARN, "%s route failed: %s: %s\n", 106737927Sbrian cmdstr, inet_ntoa(dst), strerror(rtmes.m_rtm.rtm_errno)); 106836285Sbrian } 106936285Sbrian log_Printf(LogDEBUG, "wrote %d: cmd = %s, dst = %x, gateway = %x\n", 107036285Sbrian wb, cmdstr, (unsigned)dst.s_addr, (unsigned)gateway.s_addr); 107136285Sbrian close(s); 107236285Sbrian 107336285Sbrian return result; 107436285Sbrian} 107536285Sbrian 107636285Sbrianvoid 107736285Sbrianbundle_LinkClosed(struct bundle *bundle, struct datalink *dl) 107836285Sbrian{ 107936285Sbrian /* 108036285Sbrian * Our datalink has closed. 108136285Sbrian * CleanDatalinks() (called from DoLoop()) will remove closed 108236465Sbrian * BACKGROUND and DIRECT links. 108336285Sbrian * If it's the last data link, enter phase DEAD. 108436285Sbrian * 108536285Sbrian * NOTE: dl may not be in our list (bundle_SendDatalink()) ! 108636285Sbrian */ 108736285Sbrian 108836285Sbrian struct datalink *odl; 108936285Sbrian int other_links; 109036285Sbrian 109138200Sbrian log_SetTtyCommandMode(dl); 109238200Sbrian 109336285Sbrian other_links = 0; 109436285Sbrian for (odl = bundle->links; odl; odl = odl->next) 109536285Sbrian if (odl != dl && odl->state != DATALINK_CLOSED) 109636285Sbrian other_links++; 109736285Sbrian 109836285Sbrian if (!other_links) { 109936465Sbrian if (dl->physical->type != PHYS_AUTO) /* Not in -auto mode */ 110036285Sbrian bundle_DownInterface(bundle); 110137060Sbrian fsm2initial(&bundle->ncp.ipcp.fsm); 110236285Sbrian bundle_NewPhase(bundle, PHASE_DEAD); 110336314Sbrian bundle_StopIdleTimer(bundle); 110436285Sbrian bundle_StopAutoLoadTimer(bundle); 110536285Sbrian bundle->autoload.running = 0; 110636285Sbrian } else 110736285Sbrian bundle->autoload.running = 1; 110836285Sbrian} 110936285Sbrian 111036285Sbrianvoid 111137955Sbrianbundle_Open(struct bundle *bundle, const char *name, int mask, int force) 111236285Sbrian{ 111336285Sbrian /* 111436285Sbrian * Please open the given datalink, or all if name == NULL 111536285Sbrian */ 111636285Sbrian struct datalink *dl; 111736285Sbrian 111836285Sbrian timer_Stop(&bundle->autoload.timer); 111936285Sbrian for (dl = bundle->links; dl; dl = dl->next) 112036285Sbrian if (name == NULL || !strcasecmp(dl->name, name)) { 112137955Sbrian if ((mask & dl->physical->type) && 112237955Sbrian (dl->state == DATALINK_CLOSED || 112337955Sbrian (force && dl->state == DATALINK_OPENING && 112437955Sbrian dl->dial_timer.state == TIMER_RUNNING))) { 112537955Sbrian if (force) 112637955Sbrian timer_Stop(&dl->dial_timer); 112736285Sbrian datalink_Up(dl, 1, 1); 112836465Sbrian if (mask == PHYS_AUTO) 112936465Sbrian /* Only one AUTO link at a time (see the AutoLoad timer) */ 113036285Sbrian break; 113136285Sbrian } 113236285Sbrian if (name != NULL) 113336285Sbrian break; 113436285Sbrian } 113536285Sbrian} 113636285Sbrian 113736285Sbrianstruct datalink * 113836285Sbrianbundle2datalink(struct bundle *bundle, const char *name) 113936285Sbrian{ 114036285Sbrian struct datalink *dl; 114136285Sbrian 114236285Sbrian if (name != NULL) { 114336285Sbrian for (dl = bundle->links; dl; dl = dl->next) 114436285Sbrian if (!strcasecmp(dl->name, name)) 114536285Sbrian return dl; 114636285Sbrian } else if (bundle->links && !bundle->links->next) 114736285Sbrian return bundle->links; 114836285Sbrian 114936285Sbrian return NULL; 115036285Sbrian} 115136285Sbrian 115236285Sbrianint 115336285Sbrianbundle_FillQueues(struct bundle *bundle) 115436285Sbrian{ 115536285Sbrian int total; 115636285Sbrian 115736285Sbrian if (bundle->ncp.mp.active) 115836285Sbrian total = mp_FillQueues(bundle); 115936285Sbrian else { 116036285Sbrian struct datalink *dl; 116136285Sbrian int add; 116236285Sbrian 116336285Sbrian for (total = 0, dl = bundle->links; dl; dl = dl->next) 116436285Sbrian if (dl->state == DATALINK_OPEN) { 116536285Sbrian add = link_QueueLen(&dl->physical->link); 116636285Sbrian if (add == 0 && dl->physical->out == NULL) 116736285Sbrian add = ip_FlushPacket(&dl->physical->link, bundle); 116836285Sbrian total += add; 116936285Sbrian } 117036285Sbrian } 117136285Sbrian 117238557Sbrian return total + ip_QueueLen(&bundle->ncp.ipcp); 117336285Sbrian} 117436285Sbrian 117536285Sbrianint 117636285Sbrianbundle_ShowLinks(struct cmdargs const *arg) 117736285Sbrian{ 117836285Sbrian struct datalink *dl; 117936285Sbrian 118036285Sbrian for (dl = arg->bundle->links; dl; dl = dl->next) { 118136316Sbrian prompt_Printf(arg->prompt, "Name: %s [%s, %s]", 118236316Sbrian dl->name, mode2Nam(dl->physical->type), datalink_State(dl)); 118336285Sbrian if (dl->physical->link.throughput.rolling && dl->state == DATALINK_OPEN) 118436316Sbrian prompt_Printf(arg->prompt, " weight %d, %d bytes/sec", 118536285Sbrian dl->mp.weight, 118636285Sbrian dl->physical->link.throughput.OctetsPerSecond); 118736285Sbrian prompt_Printf(arg->prompt, "\n"); 118836285Sbrian } 118936285Sbrian 119036285Sbrian return 0; 119136285Sbrian} 119236285Sbrian 119336285Sbrianstatic const char * 119436285Sbrianoptval(struct bundle *bundle, int bit) 119536285Sbrian{ 119636285Sbrian return (bundle->cfg.opt & bit) ? "enabled" : "disabled"; 119736285Sbrian} 119836285Sbrian 119936285Sbrianint 120036285Sbrianbundle_ShowStatus(struct cmdargs const *arg) 120136285Sbrian{ 120236285Sbrian int remaining; 120336285Sbrian 120436285Sbrian prompt_Printf(arg->prompt, "Phase %s\n", bundle_PhaseName(arg->bundle)); 120540679Sbrian prompt_Printf(arg->prompt, " Title: %s\n", arg->bundle->argv[0]); 120636285Sbrian prompt_Printf(arg->prompt, " Device: %s\n", arg->bundle->dev.Name); 120736285Sbrian prompt_Printf(arg->prompt, " Interface: %s @ %lubps\n", 120840561Sbrian arg->bundle->iface->name, arg->bundle->ifSpeed); 120936285Sbrian 121036285Sbrian prompt_Printf(arg->prompt, "\nDefaults:\n"); 121136285Sbrian prompt_Printf(arg->prompt, " Label: %s\n", arg->bundle->cfg.label); 121236285Sbrian prompt_Printf(arg->prompt, " Auth name: %s\n", 121336285Sbrian arg->bundle->cfg.auth.name); 121436285Sbrian prompt_Printf(arg->prompt, " Auto Load: Up after %ds of >= %d packets\n", 121536285Sbrian arg->bundle->cfg.autoload.max.timeout, 121636285Sbrian arg->bundle->cfg.autoload.max.packets); 121736285Sbrian prompt_Printf(arg->prompt, " Down after %ds of <= %d" 121836285Sbrian " packets\n", arg->bundle->cfg.autoload.min.timeout, 121936285Sbrian arg->bundle->cfg.autoload.min.packets); 122036285Sbrian if (arg->bundle->autoload.timer.state == TIMER_RUNNING) 122136285Sbrian prompt_Printf(arg->prompt, " %ds remaining 'till " 122236285Sbrian "a link comes %s\n", 122336285Sbrian bundle_RemainingAutoLoadTime(arg->bundle), 122436285Sbrian arg->bundle->autoload.comingup ? "up" : "down"); 122536285Sbrian else 122636285Sbrian prompt_Printf(arg->prompt, " %srunning with %d" 122736285Sbrian " packets queued\n", arg->bundle->autoload.running ? 122838557Sbrian "" : "not ", ip_QueueLen(&arg->bundle->ncp.ipcp)); 122936285Sbrian 123038544Sbrian prompt_Printf(arg->prompt, " Choked Timer: %ds\n", 123138544Sbrian arg->bundle->cfg.choked.timeout); 123236285Sbrian prompt_Printf(arg->prompt, " Idle Timer: "); 123336285Sbrian if (arg->bundle->cfg.idle_timeout) { 123436285Sbrian prompt_Printf(arg->prompt, "%ds", arg->bundle->cfg.idle_timeout); 123536285Sbrian remaining = bundle_RemainingIdleTime(arg->bundle); 123636285Sbrian if (remaining != -1) 123736285Sbrian prompt_Printf(arg->prompt, " (%ds remaining)", remaining); 123836285Sbrian prompt_Printf(arg->prompt, "\n"); 123936285Sbrian } else 124036285Sbrian prompt_Printf(arg->prompt, "disabled\n"); 124136285Sbrian prompt_Printf(arg->prompt, " MTU: "); 124236285Sbrian if (arg->bundle->cfg.mtu) 124336285Sbrian prompt_Printf(arg->prompt, "%d\n", arg->bundle->cfg.mtu); 124436285Sbrian else 124536285Sbrian prompt_Printf(arg->prompt, "unspecified\n"); 124636285Sbrian 124740665Sbrian prompt_Printf(arg->prompt, " sendpipe: "); 124840665Sbrian if (arg->bundle->ncp.ipcp.cfg.sendpipe > 0) 124940665Sbrian prompt_Printf(arg->prompt, "%ld\n", arg->bundle->ncp.ipcp.cfg.sendpipe); 125040665Sbrian else 125140665Sbrian prompt_Printf(arg->prompt, "unspecified\n"); 125240665Sbrian prompt_Printf(arg->prompt, " recvpipe: "); 125340665Sbrian if (arg->bundle->ncp.ipcp.cfg.recvpipe > 0) 125440665Sbrian prompt_Printf(arg->prompt, "%ld\n", arg->bundle->ncp.ipcp.cfg.recvpipe); 125540665Sbrian else 125640665Sbrian prompt_Printf(arg->prompt, "unspecified\n"); 125740665Sbrian 125836285Sbrian prompt_Printf(arg->prompt, " Sticky Routes: %s\n", 125936285Sbrian optval(arg->bundle, OPT_SROUTES)); 126036285Sbrian prompt_Printf(arg->prompt, " ID check: %s\n", 126136285Sbrian optval(arg->bundle, OPT_IDCHECK)); 126236285Sbrian prompt_Printf(arg->prompt, " Loopback: %s\n", 126336285Sbrian optval(arg->bundle, OPT_LOOPBACK)); 126436285Sbrian prompt_Printf(arg->prompt, " PasswdAuth: %s\n", 126536285Sbrian optval(arg->bundle, OPT_PASSWDAUTH)); 126636285Sbrian prompt_Printf(arg->prompt, " Proxy: %s\n", 126736285Sbrian optval(arg->bundle, OPT_PROXY)); 126840665Sbrian prompt_Printf(arg->prompt, " Proxyall: %s\n", 126940665Sbrian optval(arg->bundle, OPT_PROXYALL)); 127036285Sbrian prompt_Printf(arg->prompt, " Throughput: %s\n", 127136285Sbrian optval(arg->bundle, OPT_THROUGHPUT)); 127236285Sbrian prompt_Printf(arg->prompt, " Utmp Logging: %s\n", 127336285Sbrian optval(arg->bundle, OPT_UTMP)); 127440561Sbrian prompt_Printf(arg->prompt, " Iface-Alias: %s\n", 127540561Sbrian optval(arg->bundle, OPT_IFACEALIAS)); 127636285Sbrian 127736285Sbrian return 0; 127836285Sbrian} 127936285Sbrian 128036285Sbrianstatic void 128136285Sbrianbundle_IdleTimeout(void *v) 128236285Sbrian{ 128336285Sbrian struct bundle *bundle = (struct bundle *)v; 128436285Sbrian 128536285Sbrian log_Printf(LogPHASE, "Idle timer expired.\n"); 128636285Sbrian bundle_StopIdleTimer(bundle); 128737007Sbrian bundle_Close(bundle, NULL, CLOSE_STAYDOWN); 128836285Sbrian} 128936285Sbrian 129036285Sbrian/* 129136285Sbrian * Start Idle timer. If timeout is reached, we call bundle_Close() to 129236285Sbrian * close LCP and link. 129336285Sbrian */ 129436285Sbrianvoid 129536285Sbrianbundle_StartIdleTimer(struct bundle *bundle) 129636285Sbrian{ 129736285Sbrian timer_Stop(&bundle->idle.timer); 129836928Sbrian if ((bundle->phys_type.open & (PHYS_DEDICATED|PHYS_DDIAL)) != 129936928Sbrian bundle->phys_type.open && bundle->cfg.idle_timeout) { 130036285Sbrian bundle->idle.timer.func = bundle_IdleTimeout; 130136285Sbrian bundle->idle.timer.name = "idle"; 130236285Sbrian bundle->idle.timer.load = bundle->cfg.idle_timeout * SECTICKS; 130336285Sbrian bundle->idle.timer.arg = bundle; 130436285Sbrian timer_Start(&bundle->idle.timer); 130536285Sbrian bundle->idle.done = time(NULL) + bundle->cfg.idle_timeout; 130636285Sbrian } 130736285Sbrian} 130836285Sbrian 130936285Sbrianvoid 131036285Sbrianbundle_SetIdleTimer(struct bundle *bundle, int value) 131136285Sbrian{ 131236285Sbrian bundle->cfg.idle_timeout = value; 131336285Sbrian if (bundle_LinkIsUp(bundle)) 131436285Sbrian bundle_StartIdleTimer(bundle); 131536285Sbrian} 131636285Sbrian 131736285Sbrianvoid 131836285Sbrianbundle_StopIdleTimer(struct bundle *bundle) 131936285Sbrian{ 132036285Sbrian timer_Stop(&bundle->idle.timer); 132136285Sbrian bundle->idle.done = 0; 132236285Sbrian} 132336285Sbrian 132436285Sbrianstatic int 132536285Sbrianbundle_RemainingIdleTime(struct bundle *bundle) 132636285Sbrian{ 132736285Sbrian if (bundle->idle.done) 132836285Sbrian return bundle->idle.done - time(NULL); 132936285Sbrian return -1; 133036285Sbrian} 133136285Sbrian 133236285Sbrianint 133336285Sbrianbundle_IsDead(struct bundle *bundle) 133436285Sbrian{ 133536285Sbrian return !bundle->links || (bundle->phase == PHASE_DEAD && bundle->CleaningUp); 133636285Sbrian} 133736285Sbrian 133836285Sbrianstatic struct datalink * 133936285Sbrianbundle_DatalinkLinkout(struct bundle *bundle, struct datalink *dl) 134036285Sbrian{ 134136285Sbrian struct datalink **dlp; 134236285Sbrian 134336314Sbrian for (dlp = &bundle->links; *dlp; dlp = &(*dlp)->next) 134436314Sbrian if (*dlp == dl) { 134536314Sbrian *dlp = dl->next; 134636314Sbrian dl->next = NULL; 134736314Sbrian bundle_LinksRemoved(bundle); 134836314Sbrian return dl; 134936314Sbrian } 135036285Sbrian 135136285Sbrian return NULL; 135236285Sbrian} 135336285Sbrian 135436285Sbrianstatic void 135536285Sbrianbundle_DatalinkLinkin(struct bundle *bundle, struct datalink *dl) 135636285Sbrian{ 135736285Sbrian struct datalink **dlp = &bundle->links; 135836285Sbrian 135936285Sbrian while (*dlp) 136036285Sbrian dlp = &(*dlp)->next; 136136285Sbrian 136236285Sbrian *dlp = dl; 136336285Sbrian dl->next = NULL; 136436285Sbrian 136536285Sbrian bundle_LinkAdded(bundle, dl); 136636285Sbrian} 136736285Sbrian 136836285Sbrianvoid 136936285Sbrianbundle_CleanDatalinks(struct bundle *bundle) 137036285Sbrian{ 137136285Sbrian struct datalink **dlp = &bundle->links; 137236285Sbrian int found = 0; 137336285Sbrian 137436285Sbrian while (*dlp) 137536285Sbrian if ((*dlp)->state == DATALINK_CLOSED && 137636465Sbrian (*dlp)->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND)) { 137736285Sbrian *dlp = datalink_Destroy(*dlp); 137836285Sbrian found++; 137936285Sbrian } else 138036285Sbrian dlp = &(*dlp)->next; 138136285Sbrian 138236285Sbrian if (found) 138336285Sbrian bundle_LinksRemoved(bundle); 138436285Sbrian} 138536285Sbrian 138636285Sbrianint 138736285Sbrianbundle_DatalinkClone(struct bundle *bundle, struct datalink *dl, 138836285Sbrian const char *name) 138936285Sbrian{ 139036285Sbrian if (bundle2datalink(bundle, name)) { 139136285Sbrian log_Printf(LogWARN, "Clone: %s: name already exists\n", name); 139236285Sbrian return 0; 139336285Sbrian } 139436285Sbrian 139536285Sbrian bundle_DatalinkLinkin(bundle, datalink_Clone(dl, name)); 139636285Sbrian return 1; 139736285Sbrian} 139836285Sbrian 139936285Sbrianvoid 140036285Sbrianbundle_DatalinkRemove(struct bundle *bundle, struct datalink *dl) 140136285Sbrian{ 140236285Sbrian dl = bundle_DatalinkLinkout(bundle, dl); 140336285Sbrian if (dl) 140436285Sbrian datalink_Destroy(dl); 140536285Sbrian} 140636285Sbrian 140736285Sbrianvoid 140836285Sbrianbundle_SetLabel(struct bundle *bundle, const char *label) 140936285Sbrian{ 141036285Sbrian if (label) 141136285Sbrian strncpy(bundle->cfg.label, label, sizeof bundle->cfg.label - 1); 141236285Sbrian else 141336285Sbrian *bundle->cfg.label = '\0'; 141436285Sbrian} 141536285Sbrian 141636285Sbrianconst char * 141736285Sbrianbundle_GetLabel(struct bundle *bundle) 141836285Sbrian{ 141936285Sbrian return *bundle->cfg.label ? bundle->cfg.label : NULL; 142036285Sbrian} 142136285Sbrian 142236285Sbrianvoid 142336285Sbrianbundle_ReceiveDatalink(struct bundle *bundle, int s, struct sockaddr_un *sun) 142436285Sbrian{ 142536285Sbrian char cmsgbuf[sizeof(struct cmsghdr) + sizeof(int)]; 142636285Sbrian struct cmsghdr *cmsg = (struct cmsghdr *)cmsgbuf; 142736285Sbrian struct msghdr msg; 142836285Sbrian struct iovec iov[SCATTER_SEGMENTS]; 142936285Sbrian struct datalink *dl; 143036285Sbrian int niov, link_fd, expect, f; 143136450Sbrian pid_t pid; 143236285Sbrian 143336285Sbrian log_Printf(LogPHASE, "Receiving datalink\n"); 143436285Sbrian 143536285Sbrian /* Create our scatter/gather array */ 143636285Sbrian niov = 1; 143736285Sbrian iov[0].iov_len = strlen(Version) + 1; 143836285Sbrian iov[0].iov_base = (char *)malloc(iov[0].iov_len); 143936450Sbrian if (datalink2iov(NULL, iov, &niov, sizeof iov / sizeof *iov, 0) == -1) { 144036345Sbrian close(s); 144136285Sbrian return; 144236345Sbrian } 144336285Sbrian 144436450Sbrian pid = getpid(); 144536450Sbrian write(s, &pid, sizeof pid); 144636450Sbrian 144736285Sbrian for (f = expect = 0; f < niov; f++) 144836285Sbrian expect += iov[f].iov_len; 144936285Sbrian 145036285Sbrian /* Set up our message */ 145136285Sbrian cmsg->cmsg_len = sizeof cmsgbuf; 145236285Sbrian cmsg->cmsg_level = SOL_SOCKET; 145336345Sbrian cmsg->cmsg_type = 0; 145436285Sbrian 145536285Sbrian memset(&msg, '\0', sizeof msg); 145636285Sbrian msg.msg_name = (caddr_t)sun; 145736285Sbrian msg.msg_namelen = sizeof *sun; 145836285Sbrian msg.msg_iov = iov; 145936285Sbrian msg.msg_iovlen = niov; 146036285Sbrian msg.msg_control = cmsgbuf; 146136285Sbrian msg.msg_controllen = sizeof cmsgbuf; 146236285Sbrian 146336285Sbrian log_Printf(LogDEBUG, "Expecting %d scatter/gather bytes\n", expect); 146436285Sbrian f = expect + 100; 146536285Sbrian setsockopt(s, SOL_SOCKET, SO_RCVBUF, &f, sizeof f); 146636285Sbrian if ((f = recvmsg(s, &msg, MSG_WAITALL)) != expect) { 146736285Sbrian if (f == -1) 146836285Sbrian log_Printf(LogERROR, "Failed recvmsg: %s\n", strerror(errno)); 146936285Sbrian else 147036285Sbrian log_Printf(LogERROR, "Failed recvmsg: Got %d, not %d\n", f, expect); 147136285Sbrian while (niov--) 147236285Sbrian free(iov[niov].iov_base); 147336345Sbrian close(s); 147436285Sbrian return; 147536285Sbrian } 147636285Sbrian 147736345Sbrian write(s, "!", 1); /* ACK */ 147837054Sbrian close(s); 147936285Sbrian 148037054Sbrian if (cmsg->cmsg_type != SCM_RIGHTS) { 148137054Sbrian log_Printf(LogERROR, "Recvmsg: no descriptor received !\n"); 148237054Sbrian while (niov--) 148337054Sbrian free(iov[niov].iov_base); 148437054Sbrian return; 148536345Sbrian } 148636285Sbrian 148737054Sbrian /* We've successfully received an open file descriptor through our socket */ 148837054Sbrian log_Printf(LogDEBUG, "Receiving device descriptor\n"); 148937054Sbrian link_fd = *(int *)CMSG_DATA(cmsg); 149037054Sbrian 149136285Sbrian if (strncmp(Version, iov[0].iov_base, iov[0].iov_len)) { 149236285Sbrian log_Printf(LogWARN, "Cannot receive datalink, incorrect version" 149336285Sbrian " (\"%.*s\", not \"%s\")\n", (int)iov[0].iov_len, 149437188Sbrian (char *)iov[0].iov_base, Version); 149536285Sbrian close(link_fd); 149636285Sbrian while (niov--) 149736285Sbrian free(iov[niov].iov_base); 149836285Sbrian return; 149936285Sbrian } 150036285Sbrian 150136285Sbrian niov = 1; 150236285Sbrian dl = iov2datalink(bundle, iov, &niov, sizeof iov / sizeof *iov, link_fd); 150336285Sbrian if (dl) { 150436285Sbrian bundle_DatalinkLinkin(bundle, dl); 150536285Sbrian datalink_AuthOk(dl); 150636285Sbrian } else 150736285Sbrian close(link_fd); 150836285Sbrian 150936285Sbrian free(iov[0].iov_base); 151036285Sbrian} 151136285Sbrian 151236285Sbrianvoid 151336285Sbrianbundle_SendDatalink(struct datalink *dl, int s, struct sockaddr_un *sun) 151436285Sbrian{ 151536285Sbrian char cmsgbuf[sizeof(struct cmsghdr) + sizeof(int)], ack; 151636285Sbrian struct cmsghdr *cmsg = (struct cmsghdr *)cmsgbuf; 151736285Sbrian struct msghdr msg; 151836285Sbrian struct iovec iov[SCATTER_SEGMENTS]; 151936452Sbrian int niov, link_fd, f, expect, newsid; 152036450Sbrian pid_t newpid; 152136285Sbrian 152236285Sbrian log_Printf(LogPHASE, "Transmitting datalink %s\n", dl->name); 152336285Sbrian 152436314Sbrian bundle_LinkClosed(dl->bundle, dl); 152536285Sbrian bundle_DatalinkLinkout(dl->bundle, dl); 152636285Sbrian 152736285Sbrian /* Build our scatter/gather array */ 152836285Sbrian iov[0].iov_len = strlen(Version) + 1; 152936285Sbrian iov[0].iov_base = strdup(Version); 153036285Sbrian niov = 1; 153136285Sbrian 153236450Sbrian read(s, &newpid, sizeof newpid); 153336450Sbrian link_fd = datalink2iov(dl, iov, &niov, sizeof iov / sizeof *iov, newpid); 153436285Sbrian 153536285Sbrian if (link_fd != -1) { 153636345Sbrian memset(&msg, '\0', sizeof msg); 153736285Sbrian 153836285Sbrian msg.msg_name = (caddr_t)sun; 153936285Sbrian msg.msg_namelen = sizeof *sun; 154036285Sbrian msg.msg_iov = iov; 154136285Sbrian msg.msg_iovlen = niov; 154236285Sbrian 154336452Sbrian cmsg->cmsg_len = sizeof cmsgbuf; 154436452Sbrian cmsg->cmsg_level = SOL_SOCKET; 154536452Sbrian cmsg->cmsg_type = SCM_RIGHTS; 154636452Sbrian *(int *)CMSG_DATA(cmsg) = link_fd; 154736452Sbrian msg.msg_control = cmsgbuf; 154836452Sbrian msg.msg_controllen = sizeof cmsgbuf; 154936345Sbrian 155036285Sbrian for (f = expect = 0; f < niov; f++) 155136285Sbrian expect += iov[f].iov_len; 155236285Sbrian 155336285Sbrian log_Printf(LogDEBUG, "Sending %d bytes in scatter/gather array\n", expect); 155436285Sbrian 155536285Sbrian f = expect + SOCKET_OVERHEAD; 155636285Sbrian setsockopt(s, SOL_SOCKET, SO_SNDBUF, &f, sizeof f); 155736285Sbrian if (sendmsg(s, &msg, 0) == -1) 155836285Sbrian log_Printf(LogERROR, "Failed sendmsg: %s\n", strerror(errno)); 155936285Sbrian /* We must get the ACK before closing the descriptor ! */ 156036285Sbrian read(s, &ack, 1); 156136345Sbrian 156236452Sbrian newsid = tcgetpgrp(link_fd) == getpgrp(); 156336285Sbrian close(link_fd); 156436452Sbrian if (newsid) 156536452Sbrian bundle_setsid(dl->bundle, 1); 156636285Sbrian } 156736450Sbrian close(s); 156836285Sbrian 156936285Sbrian while (niov--) 157036285Sbrian free(iov[niov].iov_base); 157136285Sbrian} 157236285Sbrian 157336285Sbrianint 157436285Sbrianbundle_RenameDatalink(struct bundle *bundle, struct datalink *ndl, 157536285Sbrian const char *name) 157636285Sbrian{ 157736285Sbrian struct datalink *dl; 157836285Sbrian 157936285Sbrian if (!strcasecmp(ndl->name, name)) 158036285Sbrian return 1; 158136285Sbrian 158236285Sbrian for (dl = bundle->links; dl; dl = dl->next) 158336285Sbrian if (!strcasecmp(dl->name, name)) 158436285Sbrian return 0; 158536285Sbrian 158636285Sbrian datalink_Rename(ndl, name); 158736285Sbrian return 1; 158836285Sbrian} 158936285Sbrian 159036285Sbrianint 159136285Sbrianbundle_SetMode(struct bundle *bundle, struct datalink *dl, int mode) 159236285Sbrian{ 159336285Sbrian int omode; 159436285Sbrian 159536285Sbrian omode = dl->physical->type; 159636285Sbrian if (omode == mode) 159736285Sbrian return 1; 159836285Sbrian 159936928Sbrian if (mode == PHYS_AUTO && !(bundle->phys_type.all & PHYS_AUTO)) 160036928Sbrian /* First auto link */ 160136285Sbrian if (bundle->ncp.ipcp.peer_ip.s_addr == INADDR_ANY) { 160236928Sbrian log_Printf(LogWARN, "You must `set ifaddr' or `open' before" 160336928Sbrian " changing mode to %s\n", mode2Nam(mode)); 160436285Sbrian return 0; 160536285Sbrian } 160636285Sbrian 160736285Sbrian if (!datalink_SetMode(dl, mode)) 160836285Sbrian return 0; 160936285Sbrian 161036928Sbrian if (mode == PHYS_AUTO && !(bundle->phys_type.all & PHYS_AUTO) && 161136928Sbrian bundle->phase != PHASE_NETWORK) 161236928Sbrian /* First auto link, we need an interface */ 161336285Sbrian ipcp_InterfaceUp(&bundle->ncp.ipcp); 161436285Sbrian 161536285Sbrian /* Regenerate phys_type and adjust autoload & idle timers */ 161636285Sbrian bundle_LinksRemoved(bundle); 161736285Sbrian 161836285Sbrian return 1; 161936285Sbrian} 162036452Sbrian 162136452Sbrianvoid 162236452Sbrianbundle_setsid(struct bundle *bundle, int holdsession) 162336452Sbrian{ 162436452Sbrian /* 162536452Sbrian * Lose the current session. This means getting rid of our pid 162636452Sbrian * too so that the tty device will really go away, and any getty 162736452Sbrian * etc will be allowed to restart. 162836452Sbrian */ 162936452Sbrian pid_t pid, orig; 163036452Sbrian int fds[2]; 163136452Sbrian char done; 163236452Sbrian struct datalink *dl; 163336452Sbrian 163436452Sbrian orig = getpid(); 163536452Sbrian if (pipe(fds) == -1) { 163636452Sbrian log_Printf(LogERROR, "pipe: %s\n", strerror(errno)); 163736452Sbrian return; 163836452Sbrian } 163936452Sbrian switch ((pid = fork())) { 164036452Sbrian case -1: 164136452Sbrian log_Printf(LogERROR, "fork: %s\n", strerror(errno)); 164236452Sbrian close(fds[0]); 164336452Sbrian close(fds[1]); 164436452Sbrian return; 164536452Sbrian case 0: 164636452Sbrian close(fds[0]); 164736452Sbrian read(fds[1], &done, 1); /* uu_locks are mine ! */ 164836452Sbrian close(fds[1]); 164936452Sbrian if (pipe(fds) == -1) { 165036452Sbrian log_Printf(LogERROR, "pipe(2): %s\n", strerror(errno)); 165136452Sbrian return; 165236452Sbrian } 165336452Sbrian switch ((pid = fork())) { 165436452Sbrian case -1: 165537019Sbrian log_Printf(LogERROR, "fork(2): %s\n", strerror(errno)); 165636452Sbrian close(fds[0]); 165736452Sbrian close(fds[1]); 165836452Sbrian return; 165936452Sbrian case 0: 166036452Sbrian close(fds[0]); 166136452Sbrian bundle_LockTun(bundle); /* update pid */ 166236452Sbrian read(fds[1], &done, 1); /* uu_locks are mine ! */ 166336452Sbrian close(fds[1]); 166436452Sbrian setsid(); 166536452Sbrian log_Printf(LogPHASE, "%d -> %d: %s session control\n", 166636452Sbrian (int)orig, (int)getpid(), 166736452Sbrian holdsession ? "Passed" : "Dropped"); 166837061Sbrian timer_InitService(); 166936452Sbrian break; 167036452Sbrian default: 167136452Sbrian close(fds[1]); 167236452Sbrian /* Give away all our modem locks (to the final process) */ 167336452Sbrian for (dl = bundle->links; dl; dl = dl->next) 167436452Sbrian if (dl->state != DATALINK_CLOSED) 167536452Sbrian modem_ChangedPid(dl->physical, pid); 167636452Sbrian write(fds[0], "!", 1); /* done */ 167736452Sbrian close(fds[0]); 167836452Sbrian exit(0); 167936452Sbrian break; 168036452Sbrian } 168136452Sbrian break; 168236452Sbrian default: 168336452Sbrian close(fds[1]); 168436452Sbrian /* Give away all our modem locks (to the intermediate process) */ 168536452Sbrian for (dl = bundle->links; dl; dl = dl->next) 168636452Sbrian if (dl->state != DATALINK_CLOSED) 168736452Sbrian modem_ChangedPid(dl->physical, pid); 168836452Sbrian write(fds[0], "!", 1); /* done */ 168936452Sbrian close(fds[0]); 169036452Sbrian if (holdsession) { 169136452Sbrian int fd, status; 169236452Sbrian 169336452Sbrian timer_TermService(); 169436452Sbrian signal(SIGPIPE, SIG_DFL); 169536452Sbrian signal(SIGALRM, SIG_DFL); 169636452Sbrian signal(SIGHUP, SIG_DFL); 169736452Sbrian signal(SIGTERM, SIG_DFL); 169836452Sbrian signal(SIGINT, SIG_DFL); 169936452Sbrian signal(SIGQUIT, SIG_DFL); 170036452Sbrian for (fd = getdtablesize(); fd >= 0; fd--) 170136452Sbrian close(fd); 170236452Sbrian setuid(geteuid()); 170336452Sbrian /* 170436452Sbrian * Reap the intermediate process. As we're not exiting but the 170536452Sbrian * intermediate is, we don't want it to become defunct. 170636452Sbrian */ 170736452Sbrian waitpid(pid, &status, 0); 170836467Sbrian /* Tweak our process arguments.... */ 170936467Sbrian bundle->argv[0] = "session owner"; 171036467Sbrian bundle->argv[1] = NULL; 171136452Sbrian /* 171236452Sbrian * Hang around for a HUP. This should happen as soon as the 171336452Sbrian * ppp that we passed our ctty descriptor to closes it. 171436452Sbrian * NOTE: If this process dies, the passed descriptor becomes 171536452Sbrian * invalid and will give a select() error by setting one 171636452Sbrian * of the error fds, aborting the other ppp. We don't 171736452Sbrian * want that to happen ! 171836452Sbrian */ 171936452Sbrian pause(); 172036452Sbrian } 172136452Sbrian exit(0); 172236452Sbrian break; 172336452Sbrian } 172436452Sbrian} 172540622Sbrian 172640622Sbrianint 172740622Sbrianbundle_HighestState(struct bundle *bundle) 172840622Sbrian{ 172940622Sbrian struct datalink *dl; 173040622Sbrian int result = DATALINK_CLOSED; 173140622Sbrian 173240622Sbrian for (dl = bundle->links; dl; dl = dl->next) 173340622Sbrian if (result < dl->state) 173440622Sbrian result = dl->state; 173540622Sbrian 173640622Sbrian return result; 173740622Sbrian} 1738