bundle.c revision 42321
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 * 2642321Sbrian * $Id: bundle.c,v 1.42 1998/12/14 19:24:28 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 bp = mbuf_Alloc(n, MB_IPIN); 62936285Sbrian memcpy(MBUF_CTOP(bp), tun.data, n); 63036285Sbrian ip_Input(bundle, bp); 63136285Sbrian log_Printf(LogDEBUG, "Looped back packet addressed to myself\n"); 63236285Sbrian } 63336285Sbrian return; 63436285Sbrian } else 63536285Sbrian log_Printf(LogDEBUG, "Oops - forwarding packet addressed to myself\n"); 63636285Sbrian } 63736285Sbrian 63836285Sbrian /* 63936285Sbrian * Process on-demand dialup. Output packets are queued within tunnel 64036285Sbrian * device until IPCP is opened. 64136285Sbrian */ 64236285Sbrian 64336285Sbrian if (bundle_Phase(bundle) == PHASE_DEAD) { 64436285Sbrian /* 64536285Sbrian * Note, we must be in AUTO mode :-/ otherwise our interface should 64636285Sbrian * *not* be UP and we can't receive data 64736285Sbrian */ 64836285Sbrian if ((pri = PacketCheck(bundle, tun.data, n, &bundle->filter.dial)) >= 0) 64937955Sbrian bundle_Open(bundle, NULL, PHYS_AUTO, 0); 65036285Sbrian else 65136285Sbrian /* 65236285Sbrian * Drop the packet. If we were to queue it, we'd just end up with 65336285Sbrian * a pile of timed-out data in our output queue by the time we get 65436285Sbrian * around to actually dialing. We'd also prematurely reach the 65536285Sbrian * threshold at which we stop select()ing to read() the tun 65636285Sbrian * device - breaking auto-dial. 65736285Sbrian */ 65836285Sbrian return; 65936285Sbrian } 66036285Sbrian 66136285Sbrian pri = PacketCheck(bundle, tun.data, n, &bundle->filter.out); 66236285Sbrian if (pri >= 0) { 66336285Sbrian#ifndef NOALIAS 66437191Sbrian if (bundle->AliasEnabled) { 66537191Sbrian PacketAliasOut(tun.data, sizeof tun.data); 66636285Sbrian n = ntohs(((struct ip *)tun.data)->ip_len); 66736285Sbrian } 66836285Sbrian#endif 66938557Sbrian ip_Enqueue(&bundle->ncp.ipcp, pri, tun.data, n); 67036285Sbrian } 67136285Sbrian } 67236285Sbrian} 67336285Sbrian 67437141Sbrianstatic int 67536285Sbrianbundle_DescriptorWrite(struct descriptor *d, struct bundle *bundle, 67636285Sbrian const fd_set *fdset) 67736285Sbrian{ 67836285Sbrian struct datalink *dl; 67937141Sbrian int result = 0; 68036285Sbrian 68136285Sbrian /* This is not actually necessary as struct mpserver doesn't Write() */ 68236285Sbrian if (descriptor_IsSet(&bundle->ncp.mp.server.desc, fdset)) 68336285Sbrian descriptor_Write(&bundle->ncp.mp.server.desc, bundle, fdset); 68436285Sbrian 68536285Sbrian for (dl = bundle->links; dl; dl = dl->next) 68636285Sbrian if (descriptor_IsSet(&dl->desc, fdset)) 68737141Sbrian result += descriptor_Write(&dl->desc, bundle, fdset); 68837141Sbrian 68937141Sbrian return result; 69036285Sbrian} 69136285Sbrian 69236709Sbrianvoid 69336452Sbrianbundle_LockTun(struct bundle *bundle) 69436452Sbrian{ 69536452Sbrian FILE *lockfile; 69636452Sbrian char pidfile[MAXPATHLEN]; 69736285Sbrian 69836452Sbrian snprintf(pidfile, sizeof pidfile, "%stun%d.pid", _PATH_VARRUN, bundle->unit); 69936452Sbrian lockfile = ID0fopen(pidfile, "w"); 70036452Sbrian if (lockfile != NULL) { 70136452Sbrian fprintf(lockfile, "%d\n", (int)getpid()); 70236452Sbrian fclose(lockfile); 70336452Sbrian } 70436452Sbrian#ifndef RELEASE_CRUNCH 70536452Sbrian else 70636452Sbrian log_Printf(LogERROR, "Warning: Can't create %s: %s\n", 70736452Sbrian pidfile, strerror(errno)); 70836452Sbrian#endif 70936452Sbrian} 71036452Sbrian 71136452Sbrianstatic void 71236452Sbrianbundle_UnlockTun(struct bundle *bundle) 71336452Sbrian{ 71436452Sbrian char pidfile[MAXPATHLEN]; 71536452Sbrian 71636452Sbrian snprintf(pidfile, sizeof pidfile, "%stun%d.pid", _PATH_VARRUN, bundle->unit); 71736452Sbrian ID0unlink(pidfile); 71836452Sbrian} 71936452Sbrian 72036285Sbrianstruct bundle * 72136467Sbrianbundle_Create(const char *prefix, int type, const char **argv) 72236285Sbrian{ 72336285Sbrian int s, enoentcount, err; 72440561Sbrian const char *ifname; 72536285Sbrian struct ifreq ifrq; 72636285Sbrian static struct bundle bundle; /* there can be only one */ 72736285Sbrian 72840561Sbrian if (bundle.iface != NULL) { /* Already allocated ! */ 72937019Sbrian log_Printf(LogALERT, "bundle_Create: There's only one BUNDLE !\n"); 73036285Sbrian return NULL; 73136285Sbrian } 73236285Sbrian 73336285Sbrian err = ENOENT; 73436285Sbrian enoentcount = 0; 73536285Sbrian for (bundle.unit = 0; ; bundle.unit++) { 73636285Sbrian snprintf(bundle.dev.Name, sizeof bundle.dev.Name, "%s%d", 73736285Sbrian prefix, bundle.unit); 73836285Sbrian bundle.dev.fd = ID0open(bundle.dev.Name, O_RDWR); 73936285Sbrian if (bundle.dev.fd >= 0) 74036285Sbrian break; 74136285Sbrian else if (errno == ENXIO) { 74236285Sbrian err = errno; 74336285Sbrian break; 74436285Sbrian } else if (errno == ENOENT) { 74536285Sbrian if (++enoentcount > 2) 74636285Sbrian break; 74736285Sbrian } else 74836285Sbrian err = errno; 74936285Sbrian } 75036285Sbrian 75136285Sbrian if (bundle.dev.fd < 0) { 75236285Sbrian log_Printf(LogWARN, "No available tunnel devices found (%s).\n", 75336285Sbrian strerror(err)); 75436285Sbrian return NULL; 75536285Sbrian } 75636285Sbrian 75736285Sbrian log_SetTun(bundle.unit); 75836467Sbrian bundle.argv = argv; 75940679Sbrian bundle.argv0 = argv[0]; 76040679Sbrian bundle.argv1 = argv[1]; 76136285Sbrian 76236285Sbrian s = socket(AF_INET, SOCK_DGRAM, 0); 76336285Sbrian if (s < 0) { 76436285Sbrian log_Printf(LogERROR, "bundle_Create: socket(): %s\n", strerror(errno)); 76536285Sbrian close(bundle.dev.fd); 76636285Sbrian return NULL; 76736285Sbrian } 76836285Sbrian 76940561Sbrian ifname = strrchr(bundle.dev.Name, '/'); 77040561Sbrian if (ifname == NULL) 77140561Sbrian ifname = bundle.dev.Name; 77236285Sbrian else 77340561Sbrian ifname++; 77436285Sbrian 77540561Sbrian bundle.iface = iface_Create(ifname); 77640561Sbrian if (bundle.iface == NULL) { 77740561Sbrian close(s); 77840561Sbrian close(bundle.dev.fd); 77940561Sbrian return NULL; 78040561Sbrian } 78140561Sbrian 78236285Sbrian /* 78336285Sbrian * Now, bring up the interface. 78436285Sbrian */ 78536285Sbrian memset(&ifrq, '\0', sizeof ifrq); 78640561Sbrian strncpy(ifrq.ifr_name, ifname, sizeof ifrq.ifr_name - 1); 78736285Sbrian ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0'; 78836285Sbrian if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { 78937019Sbrian log_Printf(LogERROR, "bundle_Create: ioctl(SIOCGIFFLAGS): %s\n", 79036285Sbrian strerror(errno)); 79136285Sbrian close(s); 79240561Sbrian iface_Destroy(bundle.iface); 79340561Sbrian bundle.iface = NULL; 79436285Sbrian close(bundle.dev.fd); 79536285Sbrian return NULL; 79636285Sbrian } 79736285Sbrian ifrq.ifr_flags |= IFF_UP; 79836285Sbrian if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { 79937019Sbrian log_Printf(LogERROR, "bundle_Create: ioctl(SIOCSIFFLAGS): %s\n", 80036285Sbrian strerror(errno)); 80136285Sbrian close(s); 80240561Sbrian iface_Destroy(bundle.iface); 80340561Sbrian bundle.iface = NULL; 80436285Sbrian close(bundle.dev.fd); 80536285Sbrian return NULL; 80636285Sbrian } 80736285Sbrian 80836285Sbrian close(s); 80936285Sbrian 81040561Sbrian log_Printf(LogPHASE, "Using interface: %s\n", ifname); 81136285Sbrian 81240561Sbrian bundle.ifSpeed = 0; 81336285Sbrian 81436285Sbrian bundle.routing_seq = 0; 81536285Sbrian bundle.phase = PHASE_DEAD; 81636285Sbrian bundle.CleaningUp = 0; 81737191Sbrian bundle.AliasEnabled = 0; 81836285Sbrian 81936285Sbrian bundle.fsm.LayerStart = bundle_LayerStart; 82036285Sbrian bundle.fsm.LayerUp = bundle_LayerUp; 82136285Sbrian bundle.fsm.LayerDown = bundle_LayerDown; 82236285Sbrian bundle.fsm.LayerFinish = bundle_LayerFinish; 82336285Sbrian bundle.fsm.object = &bundle; 82436285Sbrian 82536285Sbrian bundle.cfg.idle_timeout = NCP_IDLE_TIMEOUT; 82636285Sbrian *bundle.cfg.auth.name = '\0'; 82736285Sbrian *bundle.cfg.auth.key = '\0'; 82836285Sbrian bundle.cfg.opt = OPT_SROUTES | OPT_IDCHECK | OPT_LOOPBACK | 82936285Sbrian OPT_THROUGHPUT | OPT_UTMP; 83036285Sbrian *bundle.cfg.label = '\0'; 83136285Sbrian bundle.cfg.mtu = DEF_MTU; 83236285Sbrian bundle.cfg.autoload.max.packets = 0; 83336285Sbrian bundle.cfg.autoload.max.timeout = 0; 83436285Sbrian bundle.cfg.autoload.min.packets = 0; 83536285Sbrian bundle.cfg.autoload.min.timeout = 0; 83638544Sbrian bundle.cfg.choked.timeout = CHOKED_TIMEOUT; 83736928Sbrian bundle.phys_type.all = type; 83836928Sbrian bundle.phys_type.open = 0; 83936285Sbrian 84036285Sbrian bundle.links = datalink_Create("deflink", &bundle, type); 84136285Sbrian if (bundle.links == NULL) { 84237019Sbrian log_Printf(LogALERT, "Cannot create data link: %s\n", strerror(errno)); 84340561Sbrian iface_Destroy(bundle.iface); 84440561Sbrian bundle.iface = NULL; 84536285Sbrian close(bundle.dev.fd); 84636285Sbrian return NULL; 84736285Sbrian } 84836285Sbrian 84936285Sbrian bundle.desc.type = BUNDLE_DESCRIPTOR; 85036285Sbrian bundle.desc.UpdateSet = bundle_UpdateSet; 85136285Sbrian bundle.desc.IsSet = bundle_IsSet; 85236285Sbrian bundle.desc.Read = bundle_DescriptorRead; 85336285Sbrian bundle.desc.Write = bundle_DescriptorWrite; 85436285Sbrian 85536285Sbrian mp_Init(&bundle.ncp.mp, &bundle); 85636285Sbrian 85736285Sbrian /* Send over the first physical link by default */ 85836285Sbrian ipcp_Init(&bundle.ncp.ipcp, &bundle, &bundle.links->physical->link, 85936285Sbrian &bundle.fsm); 86036285Sbrian 86136285Sbrian memset(&bundle.filter, '\0', sizeof bundle.filter); 86236285Sbrian bundle.filter.in.fragok = bundle.filter.in.logok = 1; 86336285Sbrian bundle.filter.in.name = "IN"; 86436285Sbrian bundle.filter.out.fragok = bundle.filter.out.logok = 1; 86536285Sbrian bundle.filter.out.name = "OUT"; 86636285Sbrian bundle.filter.dial.name = "DIAL"; 86736285Sbrian bundle.filter.dial.logok = 1; 86836285Sbrian bundle.filter.alive.name = "ALIVE"; 86936285Sbrian bundle.filter.alive.logok = 1; 87036285Sbrian memset(&bundle.idle.timer, '\0', sizeof bundle.idle.timer); 87136285Sbrian bundle.idle.done = 0; 87236285Sbrian bundle.notify.fd = -1; 87336285Sbrian memset(&bundle.autoload.timer, '\0', sizeof bundle.autoload.timer); 87436285Sbrian bundle.autoload.done = 0; 87536285Sbrian bundle.autoload.running = 0; 87638544Sbrian memset(&bundle.choked.timer, '\0', sizeof bundle.choked.timer); 87736285Sbrian 87836285Sbrian /* Clean out any leftover crud */ 87940561Sbrian iface_Clear(bundle.iface, IFACE_CLEAR_ALL); 88036285Sbrian 88136452Sbrian bundle_LockTun(&bundle); 88236452Sbrian 88336285Sbrian return &bundle; 88436285Sbrian} 88536285Sbrian 88636285Sbrianstatic void 88736285Sbrianbundle_DownInterface(struct bundle *bundle) 88836285Sbrian{ 88936285Sbrian struct ifreq ifrq; 89036285Sbrian int s; 89136285Sbrian 89236285Sbrian route_IfDelete(bundle, 1); 89336285Sbrian 89436285Sbrian s = ID0socket(AF_INET, SOCK_DGRAM, 0); 89536285Sbrian if (s < 0) { 89636285Sbrian log_Printf(LogERROR, "bundle_DownInterface: socket: %s\n", strerror(errno)); 89736285Sbrian return; 89836285Sbrian } 89936285Sbrian 90036285Sbrian memset(&ifrq, '\0', sizeof ifrq); 90140561Sbrian strncpy(ifrq.ifr_name, bundle->iface->name, sizeof ifrq.ifr_name - 1); 90236285Sbrian ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0'; 90336285Sbrian if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { 90436285Sbrian log_Printf(LogERROR, "bundle_DownInterface: ioctl(SIOCGIFFLAGS): %s\n", 90536285Sbrian strerror(errno)); 90636285Sbrian close(s); 90736285Sbrian return; 90836285Sbrian } 90936285Sbrian ifrq.ifr_flags &= ~IFF_UP; 91036285Sbrian if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { 91136285Sbrian log_Printf(LogERROR, "bundle_DownInterface: ioctl(SIOCSIFFLAGS): %s\n", 91236285Sbrian strerror(errno)); 91336285Sbrian close(s); 91436285Sbrian return; 91536285Sbrian } 91636285Sbrian close(s); 91736285Sbrian} 91836285Sbrian 91936285Sbrianvoid 92036285Sbrianbundle_Destroy(struct bundle *bundle) 92136285Sbrian{ 92236285Sbrian struct datalink *dl; 92336285Sbrian 92436285Sbrian /* 92536285Sbrian * Clean up the interface. We don't need to timer_Stop()s, mp_Down(), 92636285Sbrian * ipcp_CleanInterface() and bundle_DownInterface() unless we're getting 92736285Sbrian * out under exceptional conditions such as a descriptor exception. 92836285Sbrian */ 92936285Sbrian timer_Stop(&bundle->idle.timer); 93038544Sbrian timer_Stop(&bundle->choked.timer); 93136285Sbrian timer_Stop(&bundle->autoload.timer); 93236285Sbrian mp_Down(&bundle->ncp.mp); 93336285Sbrian ipcp_CleanInterface(&bundle->ncp.ipcp); 93436285Sbrian bundle_DownInterface(bundle); 93536452Sbrian 93636285Sbrian /* Again, these are all DATALINK_CLOSED unless we're abending */ 93736285Sbrian dl = bundle->links; 93836285Sbrian while (dl) 93936285Sbrian dl = datalink_Destroy(dl); 94036285Sbrian 94136452Sbrian close(bundle->dev.fd); 94236452Sbrian bundle_UnlockTun(bundle); 94336452Sbrian 94436285Sbrian /* In case we never made PHASE_NETWORK */ 94536285Sbrian bundle_Notify(bundle, EX_ERRDEAD); 94636285Sbrian 94740561Sbrian iface_Destroy(bundle->iface); 94840561Sbrian bundle->iface = NULL; 94936285Sbrian} 95036285Sbrian 95136285Sbrianstruct rtmsg { 95236285Sbrian struct rt_msghdr m_rtm; 95336285Sbrian char m_space[64]; 95436285Sbrian}; 95536285Sbrian 95636285Sbrianint 95736285Sbrianbundle_SetRoute(struct bundle *bundle, int cmd, struct in_addr dst, 95837927Sbrian struct in_addr gateway, struct in_addr mask, int bang, int ssh) 95936285Sbrian{ 96036285Sbrian struct rtmsg rtmes; 96136285Sbrian int s, nb, wb; 96236285Sbrian char *cp; 96336285Sbrian const char *cmdstr; 96436285Sbrian struct sockaddr_in rtdata; 96536285Sbrian int result = 1; 96636285Sbrian 96736285Sbrian if (bang) 96836285Sbrian cmdstr = (cmd == RTM_ADD ? "Add!" : "Delete!"); 96936285Sbrian else 97036285Sbrian cmdstr = (cmd == RTM_ADD ? "Add" : "Delete"); 97136285Sbrian s = ID0socket(PF_ROUTE, SOCK_RAW, 0); 97236285Sbrian if (s < 0) { 97336285Sbrian log_Printf(LogERROR, "bundle_SetRoute: socket(): %s\n", strerror(errno)); 97436285Sbrian return result; 97536285Sbrian } 97636285Sbrian memset(&rtmes, '\0', sizeof rtmes); 97736285Sbrian rtmes.m_rtm.rtm_version = RTM_VERSION; 97836285Sbrian rtmes.m_rtm.rtm_type = cmd; 97936285Sbrian rtmes.m_rtm.rtm_addrs = RTA_DST; 98036285Sbrian rtmes.m_rtm.rtm_seq = ++bundle->routing_seq; 98136285Sbrian rtmes.m_rtm.rtm_pid = getpid(); 98236285Sbrian rtmes.m_rtm.rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC; 98336285Sbrian 98440665Sbrian if (cmd == RTM_ADD || cmd == RTM_CHANGE) { 98540665Sbrian if (bundle->ncp.ipcp.cfg.sendpipe > 0) { 98640665Sbrian rtmes.m_rtm.rtm_rmx.rmx_sendpipe = bundle->ncp.ipcp.cfg.sendpipe; 98740665Sbrian rtmes.m_rtm.rtm_inits |= RTV_SPIPE; 98840665Sbrian } 98940665Sbrian if (bundle->ncp.ipcp.cfg.recvpipe > 0) { 99040665Sbrian rtmes.m_rtm.rtm_rmx.rmx_recvpipe = bundle->ncp.ipcp.cfg.recvpipe; 99140665Sbrian rtmes.m_rtm.rtm_inits |= RTV_RPIPE; 99240665Sbrian } 99340665Sbrian } 99440665Sbrian 99536285Sbrian memset(&rtdata, '\0', sizeof rtdata); 99636285Sbrian rtdata.sin_len = sizeof rtdata; 99736285Sbrian rtdata.sin_family = AF_INET; 99836285Sbrian rtdata.sin_port = 0; 99936285Sbrian rtdata.sin_addr = dst; 100036285Sbrian 100136285Sbrian cp = rtmes.m_space; 100236285Sbrian memcpy(cp, &rtdata, rtdata.sin_len); 100336285Sbrian cp += rtdata.sin_len; 100436285Sbrian if (cmd == RTM_ADD) { 100536285Sbrian if (gateway.s_addr == INADDR_ANY) { 100642321Sbrian if (!ssh) 100742321Sbrian log_Printf(LogERROR, "bundle_SetRoute: Cannot add a route with" 100842321Sbrian " destination 0.0.0.0\n"); 100940561Sbrian close(s); 101040561Sbrian return result; 101136285Sbrian } else { 101236285Sbrian rtdata.sin_addr = gateway; 101336285Sbrian memcpy(cp, &rtdata, rtdata.sin_len); 101436285Sbrian cp += rtdata.sin_len; 101536285Sbrian rtmes.m_rtm.rtm_addrs |= RTA_GATEWAY; 101636285Sbrian } 101736285Sbrian } 101836285Sbrian 101936285Sbrian if (dst.s_addr == INADDR_ANY) 102036285Sbrian mask.s_addr = INADDR_ANY; 102136285Sbrian 102236285Sbrian if (cmd == RTM_ADD || dst.s_addr == INADDR_ANY) { 102336285Sbrian rtdata.sin_addr = mask; 102436285Sbrian memcpy(cp, &rtdata, rtdata.sin_len); 102536285Sbrian cp += rtdata.sin_len; 102636285Sbrian rtmes.m_rtm.rtm_addrs |= RTA_NETMASK; 102736285Sbrian } 102836285Sbrian 102936285Sbrian nb = cp - (char *) &rtmes; 103036285Sbrian rtmes.m_rtm.rtm_msglen = nb; 103136285Sbrian wb = ID0write(s, &rtmes, nb); 103236285Sbrian if (wb < 0) { 103336285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute failure:\n"); 103436285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Cmd = %s\n", cmdstr); 103536285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Dst = %s\n", inet_ntoa(dst)); 103636285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Gateway = %s\n", inet_ntoa(gateway)); 103736285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Mask = %s\n", inet_ntoa(mask)); 103836285Sbrianfailed: 103936285Sbrian if (cmd == RTM_ADD && (rtmes.m_rtm.rtm_errno == EEXIST || 104036285Sbrian (rtmes.m_rtm.rtm_errno == 0 && errno == EEXIST))) { 104136285Sbrian if (!bang) { 104236285Sbrian log_Printf(LogWARN, "Add route failed: %s already exists\n", 104340665Sbrian dst.s_addr == 0 ? "default" : inet_ntoa(dst)); 104436285Sbrian result = 0; /* Don't add to our dynamic list */ 104536285Sbrian } else { 104636285Sbrian rtmes.m_rtm.rtm_type = cmd = RTM_CHANGE; 104736285Sbrian if ((wb = ID0write(s, &rtmes, nb)) < 0) 104836285Sbrian goto failed; 104936285Sbrian } 105036285Sbrian } else if (cmd == RTM_DELETE && 105136285Sbrian (rtmes.m_rtm.rtm_errno == ESRCH || 105236285Sbrian (rtmes.m_rtm.rtm_errno == 0 && errno == ESRCH))) { 105336285Sbrian if (!bang) 105436285Sbrian log_Printf(LogWARN, "Del route failed: %s: Non-existent\n", 105536285Sbrian inet_ntoa(dst)); 105637927Sbrian } else if (rtmes.m_rtm.rtm_errno == 0) { 105737927Sbrian if (!ssh || errno != ENETUNREACH) 105837927Sbrian log_Printf(LogWARN, "%s route failed: %s: errno: %s\n", cmdstr, 105937927Sbrian inet_ntoa(dst), strerror(errno)); 106037927Sbrian } else 106136285Sbrian log_Printf(LogWARN, "%s route failed: %s: %s\n", 106237927Sbrian cmdstr, inet_ntoa(dst), strerror(rtmes.m_rtm.rtm_errno)); 106336285Sbrian } 106436285Sbrian log_Printf(LogDEBUG, "wrote %d: cmd = %s, dst = %x, gateway = %x\n", 106536285Sbrian wb, cmdstr, (unsigned)dst.s_addr, (unsigned)gateway.s_addr); 106636285Sbrian close(s); 106736285Sbrian 106836285Sbrian return result; 106936285Sbrian} 107036285Sbrian 107136285Sbrianvoid 107236285Sbrianbundle_LinkClosed(struct bundle *bundle, struct datalink *dl) 107336285Sbrian{ 107436285Sbrian /* 107536285Sbrian * Our datalink has closed. 107636285Sbrian * CleanDatalinks() (called from DoLoop()) will remove closed 107736465Sbrian * BACKGROUND and DIRECT links. 107836285Sbrian * If it's the last data link, enter phase DEAD. 107936285Sbrian * 108036285Sbrian * NOTE: dl may not be in our list (bundle_SendDatalink()) ! 108136285Sbrian */ 108236285Sbrian 108336285Sbrian struct datalink *odl; 108436285Sbrian int other_links; 108536285Sbrian 108638200Sbrian log_SetTtyCommandMode(dl); 108738200Sbrian 108836285Sbrian other_links = 0; 108936285Sbrian for (odl = bundle->links; odl; odl = odl->next) 109036285Sbrian if (odl != dl && odl->state != DATALINK_CLOSED) 109136285Sbrian other_links++; 109236285Sbrian 109336285Sbrian if (!other_links) { 109436465Sbrian if (dl->physical->type != PHYS_AUTO) /* Not in -auto mode */ 109536285Sbrian bundle_DownInterface(bundle); 109637060Sbrian fsm2initial(&bundle->ncp.ipcp.fsm); 109736285Sbrian bundle_NewPhase(bundle, PHASE_DEAD); 109836314Sbrian bundle_StopIdleTimer(bundle); 109936285Sbrian bundle_StopAutoLoadTimer(bundle); 110036285Sbrian bundle->autoload.running = 0; 110136285Sbrian } else 110236285Sbrian bundle->autoload.running = 1; 110336285Sbrian} 110436285Sbrian 110536285Sbrianvoid 110637955Sbrianbundle_Open(struct bundle *bundle, const char *name, int mask, int force) 110736285Sbrian{ 110836285Sbrian /* 110936285Sbrian * Please open the given datalink, or all if name == NULL 111036285Sbrian */ 111136285Sbrian struct datalink *dl; 111236285Sbrian 111336285Sbrian timer_Stop(&bundle->autoload.timer); 111436285Sbrian for (dl = bundle->links; dl; dl = dl->next) 111536285Sbrian if (name == NULL || !strcasecmp(dl->name, name)) { 111637955Sbrian if ((mask & dl->physical->type) && 111737955Sbrian (dl->state == DATALINK_CLOSED || 111837955Sbrian (force && dl->state == DATALINK_OPENING && 111937955Sbrian dl->dial_timer.state == TIMER_RUNNING))) { 112037955Sbrian if (force) 112137955Sbrian timer_Stop(&dl->dial_timer); 112236285Sbrian datalink_Up(dl, 1, 1); 112336465Sbrian if (mask == PHYS_AUTO) 112436465Sbrian /* Only one AUTO link at a time (see the AutoLoad timer) */ 112536285Sbrian break; 112636285Sbrian } 112736285Sbrian if (name != NULL) 112836285Sbrian break; 112936285Sbrian } 113036285Sbrian} 113136285Sbrian 113236285Sbrianstruct datalink * 113336285Sbrianbundle2datalink(struct bundle *bundle, const char *name) 113436285Sbrian{ 113536285Sbrian struct datalink *dl; 113636285Sbrian 113736285Sbrian if (name != NULL) { 113836285Sbrian for (dl = bundle->links; dl; dl = dl->next) 113936285Sbrian if (!strcasecmp(dl->name, name)) 114036285Sbrian return dl; 114136285Sbrian } else if (bundle->links && !bundle->links->next) 114236285Sbrian return bundle->links; 114336285Sbrian 114436285Sbrian return NULL; 114536285Sbrian} 114636285Sbrian 114736285Sbrianint 114836285Sbrianbundle_FillQueues(struct bundle *bundle) 114936285Sbrian{ 115036285Sbrian int total; 115136285Sbrian 115236285Sbrian if (bundle->ncp.mp.active) 115336285Sbrian total = mp_FillQueues(bundle); 115436285Sbrian else { 115536285Sbrian struct datalink *dl; 115636285Sbrian int add; 115736285Sbrian 115836285Sbrian for (total = 0, dl = bundle->links; dl; dl = dl->next) 115936285Sbrian if (dl->state == DATALINK_OPEN) { 116036285Sbrian add = link_QueueLen(&dl->physical->link); 116136285Sbrian if (add == 0 && dl->physical->out == NULL) 116236285Sbrian add = ip_FlushPacket(&dl->physical->link, bundle); 116336285Sbrian total += add; 116436285Sbrian } 116536285Sbrian } 116636285Sbrian 116738557Sbrian return total + ip_QueueLen(&bundle->ncp.ipcp); 116836285Sbrian} 116936285Sbrian 117036285Sbrianint 117136285Sbrianbundle_ShowLinks(struct cmdargs const *arg) 117236285Sbrian{ 117336285Sbrian struct datalink *dl; 117436285Sbrian 117536285Sbrian for (dl = arg->bundle->links; dl; dl = dl->next) { 117636316Sbrian prompt_Printf(arg->prompt, "Name: %s [%s, %s]", 117736316Sbrian dl->name, mode2Nam(dl->physical->type), datalink_State(dl)); 117836285Sbrian if (dl->physical->link.throughput.rolling && dl->state == DATALINK_OPEN) 117936316Sbrian prompt_Printf(arg->prompt, " weight %d, %d bytes/sec", 118036285Sbrian dl->mp.weight, 118136285Sbrian dl->physical->link.throughput.OctetsPerSecond); 118236285Sbrian prompt_Printf(arg->prompt, "\n"); 118336285Sbrian } 118436285Sbrian 118536285Sbrian return 0; 118636285Sbrian} 118736285Sbrian 118836285Sbrianstatic const char * 118936285Sbrianoptval(struct bundle *bundle, int bit) 119036285Sbrian{ 119136285Sbrian return (bundle->cfg.opt & bit) ? "enabled" : "disabled"; 119236285Sbrian} 119336285Sbrian 119436285Sbrianint 119536285Sbrianbundle_ShowStatus(struct cmdargs const *arg) 119636285Sbrian{ 119736285Sbrian int remaining; 119836285Sbrian 119936285Sbrian prompt_Printf(arg->prompt, "Phase %s\n", bundle_PhaseName(arg->bundle)); 120040679Sbrian prompt_Printf(arg->prompt, " Title: %s\n", arg->bundle->argv[0]); 120136285Sbrian prompt_Printf(arg->prompt, " Device: %s\n", arg->bundle->dev.Name); 120236285Sbrian prompt_Printf(arg->prompt, " Interface: %s @ %lubps\n", 120340561Sbrian arg->bundle->iface->name, arg->bundle->ifSpeed); 120436285Sbrian 120536285Sbrian prompt_Printf(arg->prompt, "\nDefaults:\n"); 120636285Sbrian prompt_Printf(arg->prompt, " Label: %s\n", arg->bundle->cfg.label); 120736285Sbrian prompt_Printf(arg->prompt, " Auth name: %s\n", 120836285Sbrian arg->bundle->cfg.auth.name); 120936285Sbrian prompt_Printf(arg->prompt, " Auto Load: Up after %ds of >= %d packets\n", 121036285Sbrian arg->bundle->cfg.autoload.max.timeout, 121136285Sbrian arg->bundle->cfg.autoload.max.packets); 121236285Sbrian prompt_Printf(arg->prompt, " Down after %ds of <= %d" 121336285Sbrian " packets\n", arg->bundle->cfg.autoload.min.timeout, 121436285Sbrian arg->bundle->cfg.autoload.min.packets); 121536285Sbrian if (arg->bundle->autoload.timer.state == TIMER_RUNNING) 121636285Sbrian prompt_Printf(arg->prompt, " %ds remaining 'till " 121736285Sbrian "a link comes %s\n", 121836285Sbrian bundle_RemainingAutoLoadTime(arg->bundle), 121936285Sbrian arg->bundle->autoload.comingup ? "up" : "down"); 122036285Sbrian else 122136285Sbrian prompt_Printf(arg->prompt, " %srunning with %d" 122236285Sbrian " packets queued\n", arg->bundle->autoload.running ? 122338557Sbrian "" : "not ", ip_QueueLen(&arg->bundle->ncp.ipcp)); 122436285Sbrian 122538544Sbrian prompt_Printf(arg->prompt, " Choked Timer: %ds\n", 122638544Sbrian arg->bundle->cfg.choked.timeout); 122736285Sbrian prompt_Printf(arg->prompt, " Idle Timer: "); 122836285Sbrian if (arg->bundle->cfg.idle_timeout) { 122936285Sbrian prompt_Printf(arg->prompt, "%ds", arg->bundle->cfg.idle_timeout); 123036285Sbrian remaining = bundle_RemainingIdleTime(arg->bundle); 123136285Sbrian if (remaining != -1) 123236285Sbrian prompt_Printf(arg->prompt, " (%ds remaining)", remaining); 123336285Sbrian prompt_Printf(arg->prompt, "\n"); 123436285Sbrian } else 123536285Sbrian prompt_Printf(arg->prompt, "disabled\n"); 123636285Sbrian prompt_Printf(arg->prompt, " MTU: "); 123736285Sbrian if (arg->bundle->cfg.mtu) 123836285Sbrian prompt_Printf(arg->prompt, "%d\n", arg->bundle->cfg.mtu); 123936285Sbrian else 124036285Sbrian prompt_Printf(arg->prompt, "unspecified\n"); 124136285Sbrian 124240665Sbrian prompt_Printf(arg->prompt, " sendpipe: "); 124340665Sbrian if (arg->bundle->ncp.ipcp.cfg.sendpipe > 0) 124440665Sbrian prompt_Printf(arg->prompt, "%ld\n", arg->bundle->ncp.ipcp.cfg.sendpipe); 124540665Sbrian else 124640665Sbrian prompt_Printf(arg->prompt, "unspecified\n"); 124740665Sbrian prompt_Printf(arg->prompt, " recvpipe: "); 124840665Sbrian if (arg->bundle->ncp.ipcp.cfg.recvpipe > 0) 124940665Sbrian prompt_Printf(arg->prompt, "%ld\n", arg->bundle->ncp.ipcp.cfg.recvpipe); 125040665Sbrian else 125140665Sbrian prompt_Printf(arg->prompt, "unspecified\n"); 125240665Sbrian 125336285Sbrian prompt_Printf(arg->prompt, " Sticky Routes: %s\n", 125436285Sbrian optval(arg->bundle, OPT_SROUTES)); 125536285Sbrian prompt_Printf(arg->prompt, " ID check: %s\n", 125636285Sbrian optval(arg->bundle, OPT_IDCHECK)); 125736285Sbrian prompt_Printf(arg->prompt, " Loopback: %s\n", 125836285Sbrian optval(arg->bundle, OPT_LOOPBACK)); 125936285Sbrian prompt_Printf(arg->prompt, " PasswdAuth: %s\n", 126036285Sbrian optval(arg->bundle, OPT_PASSWDAUTH)); 126136285Sbrian prompt_Printf(arg->prompt, " Proxy: %s\n", 126236285Sbrian optval(arg->bundle, OPT_PROXY)); 126340665Sbrian prompt_Printf(arg->prompt, " Proxyall: %s\n", 126440665Sbrian optval(arg->bundle, OPT_PROXYALL)); 126536285Sbrian prompt_Printf(arg->prompt, " Throughput: %s\n", 126636285Sbrian optval(arg->bundle, OPT_THROUGHPUT)); 126736285Sbrian prompt_Printf(arg->prompt, " Utmp Logging: %s\n", 126836285Sbrian optval(arg->bundle, OPT_UTMP)); 126940561Sbrian prompt_Printf(arg->prompt, " Iface-Alias: %s\n", 127040561Sbrian optval(arg->bundle, OPT_IFACEALIAS)); 127136285Sbrian 127236285Sbrian return 0; 127336285Sbrian} 127436285Sbrian 127536285Sbrianstatic void 127636285Sbrianbundle_IdleTimeout(void *v) 127736285Sbrian{ 127836285Sbrian struct bundle *bundle = (struct bundle *)v; 127936285Sbrian 128036285Sbrian log_Printf(LogPHASE, "Idle timer expired.\n"); 128136285Sbrian bundle_StopIdleTimer(bundle); 128237007Sbrian bundle_Close(bundle, NULL, CLOSE_STAYDOWN); 128336285Sbrian} 128436285Sbrian 128536285Sbrian/* 128636285Sbrian * Start Idle timer. If timeout is reached, we call bundle_Close() to 128736285Sbrian * close LCP and link. 128836285Sbrian */ 128936285Sbrianvoid 129036285Sbrianbundle_StartIdleTimer(struct bundle *bundle) 129136285Sbrian{ 129236285Sbrian timer_Stop(&bundle->idle.timer); 129336928Sbrian if ((bundle->phys_type.open & (PHYS_DEDICATED|PHYS_DDIAL)) != 129436928Sbrian bundle->phys_type.open && bundle->cfg.idle_timeout) { 129536285Sbrian bundle->idle.timer.func = bundle_IdleTimeout; 129636285Sbrian bundle->idle.timer.name = "idle"; 129736285Sbrian bundle->idle.timer.load = bundle->cfg.idle_timeout * SECTICKS; 129836285Sbrian bundle->idle.timer.arg = bundle; 129936285Sbrian timer_Start(&bundle->idle.timer); 130036285Sbrian bundle->idle.done = time(NULL) + bundle->cfg.idle_timeout; 130136285Sbrian } 130236285Sbrian} 130336285Sbrian 130436285Sbrianvoid 130536285Sbrianbundle_SetIdleTimer(struct bundle *bundle, int value) 130636285Sbrian{ 130736285Sbrian bundle->cfg.idle_timeout = value; 130836285Sbrian if (bundle_LinkIsUp(bundle)) 130936285Sbrian bundle_StartIdleTimer(bundle); 131036285Sbrian} 131136285Sbrian 131236285Sbrianvoid 131336285Sbrianbundle_StopIdleTimer(struct bundle *bundle) 131436285Sbrian{ 131536285Sbrian timer_Stop(&bundle->idle.timer); 131636285Sbrian bundle->idle.done = 0; 131736285Sbrian} 131836285Sbrian 131936285Sbrianstatic int 132036285Sbrianbundle_RemainingIdleTime(struct bundle *bundle) 132136285Sbrian{ 132236285Sbrian if (bundle->idle.done) 132336285Sbrian return bundle->idle.done - time(NULL); 132436285Sbrian return -1; 132536285Sbrian} 132636285Sbrian 132736285Sbrianint 132836285Sbrianbundle_IsDead(struct bundle *bundle) 132936285Sbrian{ 133036285Sbrian return !bundle->links || (bundle->phase == PHASE_DEAD && bundle->CleaningUp); 133136285Sbrian} 133236285Sbrian 133336285Sbrianstatic struct datalink * 133436285Sbrianbundle_DatalinkLinkout(struct bundle *bundle, struct datalink *dl) 133536285Sbrian{ 133636285Sbrian struct datalink **dlp; 133736285Sbrian 133836314Sbrian for (dlp = &bundle->links; *dlp; dlp = &(*dlp)->next) 133936314Sbrian if (*dlp == dl) { 134036314Sbrian *dlp = dl->next; 134136314Sbrian dl->next = NULL; 134236314Sbrian bundle_LinksRemoved(bundle); 134336314Sbrian return dl; 134436314Sbrian } 134536285Sbrian 134636285Sbrian return NULL; 134736285Sbrian} 134836285Sbrian 134936285Sbrianstatic void 135036285Sbrianbundle_DatalinkLinkin(struct bundle *bundle, struct datalink *dl) 135136285Sbrian{ 135236285Sbrian struct datalink **dlp = &bundle->links; 135336285Sbrian 135436285Sbrian while (*dlp) 135536285Sbrian dlp = &(*dlp)->next; 135636285Sbrian 135736285Sbrian *dlp = dl; 135836285Sbrian dl->next = NULL; 135936285Sbrian 136036285Sbrian bundle_LinkAdded(bundle, dl); 136136285Sbrian} 136236285Sbrian 136336285Sbrianvoid 136436285Sbrianbundle_CleanDatalinks(struct bundle *bundle) 136536285Sbrian{ 136636285Sbrian struct datalink **dlp = &bundle->links; 136736285Sbrian int found = 0; 136836285Sbrian 136936285Sbrian while (*dlp) 137036285Sbrian if ((*dlp)->state == DATALINK_CLOSED && 137136465Sbrian (*dlp)->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND)) { 137236285Sbrian *dlp = datalink_Destroy(*dlp); 137336285Sbrian found++; 137436285Sbrian } else 137536285Sbrian dlp = &(*dlp)->next; 137636285Sbrian 137736285Sbrian if (found) 137836285Sbrian bundle_LinksRemoved(bundle); 137936285Sbrian} 138036285Sbrian 138136285Sbrianint 138236285Sbrianbundle_DatalinkClone(struct bundle *bundle, struct datalink *dl, 138336285Sbrian const char *name) 138436285Sbrian{ 138536285Sbrian if (bundle2datalink(bundle, name)) { 138636285Sbrian log_Printf(LogWARN, "Clone: %s: name already exists\n", name); 138736285Sbrian return 0; 138836285Sbrian } 138936285Sbrian 139036285Sbrian bundle_DatalinkLinkin(bundle, datalink_Clone(dl, name)); 139136285Sbrian return 1; 139236285Sbrian} 139336285Sbrian 139436285Sbrianvoid 139536285Sbrianbundle_DatalinkRemove(struct bundle *bundle, struct datalink *dl) 139636285Sbrian{ 139736285Sbrian dl = bundle_DatalinkLinkout(bundle, dl); 139836285Sbrian if (dl) 139936285Sbrian datalink_Destroy(dl); 140036285Sbrian} 140136285Sbrian 140236285Sbrianvoid 140336285Sbrianbundle_SetLabel(struct bundle *bundle, const char *label) 140436285Sbrian{ 140536285Sbrian if (label) 140636285Sbrian strncpy(bundle->cfg.label, label, sizeof bundle->cfg.label - 1); 140736285Sbrian else 140836285Sbrian *bundle->cfg.label = '\0'; 140936285Sbrian} 141036285Sbrian 141136285Sbrianconst char * 141236285Sbrianbundle_GetLabel(struct bundle *bundle) 141336285Sbrian{ 141436285Sbrian return *bundle->cfg.label ? bundle->cfg.label : NULL; 141536285Sbrian} 141636285Sbrian 141736285Sbrianvoid 141836285Sbrianbundle_ReceiveDatalink(struct bundle *bundle, int s, struct sockaddr_un *sun) 141936285Sbrian{ 142036285Sbrian char cmsgbuf[sizeof(struct cmsghdr) + sizeof(int)]; 142136285Sbrian struct cmsghdr *cmsg = (struct cmsghdr *)cmsgbuf; 142236285Sbrian struct msghdr msg; 142336285Sbrian struct iovec iov[SCATTER_SEGMENTS]; 142436285Sbrian struct datalink *dl; 142536285Sbrian int niov, link_fd, expect, f; 142636450Sbrian pid_t pid; 142736285Sbrian 142836285Sbrian log_Printf(LogPHASE, "Receiving datalink\n"); 142936285Sbrian 143036285Sbrian /* Create our scatter/gather array */ 143136285Sbrian niov = 1; 143236285Sbrian iov[0].iov_len = strlen(Version) + 1; 143336285Sbrian iov[0].iov_base = (char *)malloc(iov[0].iov_len); 143436450Sbrian if (datalink2iov(NULL, iov, &niov, sizeof iov / sizeof *iov, 0) == -1) { 143536345Sbrian close(s); 143636285Sbrian return; 143736345Sbrian } 143836285Sbrian 143936450Sbrian pid = getpid(); 144036450Sbrian write(s, &pid, sizeof pid); 144136450Sbrian 144236285Sbrian for (f = expect = 0; f < niov; f++) 144336285Sbrian expect += iov[f].iov_len; 144436285Sbrian 144536285Sbrian /* Set up our message */ 144636285Sbrian cmsg->cmsg_len = sizeof cmsgbuf; 144736285Sbrian cmsg->cmsg_level = SOL_SOCKET; 144836345Sbrian cmsg->cmsg_type = 0; 144936285Sbrian 145036285Sbrian memset(&msg, '\0', sizeof msg); 145136285Sbrian msg.msg_name = (caddr_t)sun; 145236285Sbrian msg.msg_namelen = sizeof *sun; 145336285Sbrian msg.msg_iov = iov; 145436285Sbrian msg.msg_iovlen = niov; 145536285Sbrian msg.msg_control = cmsgbuf; 145636285Sbrian msg.msg_controllen = sizeof cmsgbuf; 145736285Sbrian 145836285Sbrian log_Printf(LogDEBUG, "Expecting %d scatter/gather bytes\n", expect); 145936285Sbrian f = expect + 100; 146036285Sbrian setsockopt(s, SOL_SOCKET, SO_RCVBUF, &f, sizeof f); 146136285Sbrian if ((f = recvmsg(s, &msg, MSG_WAITALL)) != expect) { 146236285Sbrian if (f == -1) 146336285Sbrian log_Printf(LogERROR, "Failed recvmsg: %s\n", strerror(errno)); 146436285Sbrian else 146536285Sbrian log_Printf(LogERROR, "Failed recvmsg: Got %d, not %d\n", f, expect); 146636285Sbrian while (niov--) 146736285Sbrian free(iov[niov].iov_base); 146836345Sbrian close(s); 146936285Sbrian return; 147036285Sbrian } 147136285Sbrian 147236345Sbrian write(s, "!", 1); /* ACK */ 147337054Sbrian close(s); 147436285Sbrian 147537054Sbrian if (cmsg->cmsg_type != SCM_RIGHTS) { 147637054Sbrian log_Printf(LogERROR, "Recvmsg: no descriptor received !\n"); 147737054Sbrian while (niov--) 147837054Sbrian free(iov[niov].iov_base); 147937054Sbrian return; 148036345Sbrian } 148136285Sbrian 148237054Sbrian /* We've successfully received an open file descriptor through our socket */ 148337054Sbrian log_Printf(LogDEBUG, "Receiving device descriptor\n"); 148437054Sbrian link_fd = *(int *)CMSG_DATA(cmsg); 148537054Sbrian 148636285Sbrian if (strncmp(Version, iov[0].iov_base, iov[0].iov_len)) { 148736285Sbrian log_Printf(LogWARN, "Cannot receive datalink, incorrect version" 148836285Sbrian " (\"%.*s\", not \"%s\")\n", (int)iov[0].iov_len, 148937188Sbrian (char *)iov[0].iov_base, Version); 149036285Sbrian close(link_fd); 149136285Sbrian while (niov--) 149236285Sbrian free(iov[niov].iov_base); 149336285Sbrian return; 149436285Sbrian } 149536285Sbrian 149636285Sbrian niov = 1; 149736285Sbrian dl = iov2datalink(bundle, iov, &niov, sizeof iov / sizeof *iov, link_fd); 149836285Sbrian if (dl) { 149936285Sbrian bundle_DatalinkLinkin(bundle, dl); 150036285Sbrian datalink_AuthOk(dl); 150136285Sbrian } else 150236285Sbrian close(link_fd); 150336285Sbrian 150436285Sbrian free(iov[0].iov_base); 150536285Sbrian} 150636285Sbrian 150736285Sbrianvoid 150836285Sbrianbundle_SendDatalink(struct datalink *dl, int s, struct sockaddr_un *sun) 150936285Sbrian{ 151036285Sbrian char cmsgbuf[sizeof(struct cmsghdr) + sizeof(int)], ack; 151136285Sbrian struct cmsghdr *cmsg = (struct cmsghdr *)cmsgbuf; 151236285Sbrian struct msghdr msg; 151336285Sbrian struct iovec iov[SCATTER_SEGMENTS]; 151436452Sbrian int niov, link_fd, f, expect, newsid; 151536450Sbrian pid_t newpid; 151636285Sbrian 151736285Sbrian log_Printf(LogPHASE, "Transmitting datalink %s\n", dl->name); 151836285Sbrian 151936314Sbrian bundle_LinkClosed(dl->bundle, dl); 152036285Sbrian bundle_DatalinkLinkout(dl->bundle, dl); 152136285Sbrian 152236285Sbrian /* Build our scatter/gather array */ 152336285Sbrian iov[0].iov_len = strlen(Version) + 1; 152436285Sbrian iov[0].iov_base = strdup(Version); 152536285Sbrian niov = 1; 152636285Sbrian 152736450Sbrian read(s, &newpid, sizeof newpid); 152836450Sbrian link_fd = datalink2iov(dl, iov, &niov, sizeof iov / sizeof *iov, newpid); 152936285Sbrian 153036285Sbrian if (link_fd != -1) { 153136345Sbrian memset(&msg, '\0', sizeof msg); 153236285Sbrian 153336285Sbrian msg.msg_name = (caddr_t)sun; 153436285Sbrian msg.msg_namelen = sizeof *sun; 153536285Sbrian msg.msg_iov = iov; 153636285Sbrian msg.msg_iovlen = niov; 153736285Sbrian 153836452Sbrian cmsg->cmsg_len = sizeof cmsgbuf; 153936452Sbrian cmsg->cmsg_level = SOL_SOCKET; 154036452Sbrian cmsg->cmsg_type = SCM_RIGHTS; 154136452Sbrian *(int *)CMSG_DATA(cmsg) = link_fd; 154236452Sbrian msg.msg_control = cmsgbuf; 154336452Sbrian msg.msg_controllen = sizeof cmsgbuf; 154436345Sbrian 154536285Sbrian for (f = expect = 0; f < niov; f++) 154636285Sbrian expect += iov[f].iov_len; 154736285Sbrian 154836285Sbrian log_Printf(LogDEBUG, "Sending %d bytes in scatter/gather array\n", expect); 154936285Sbrian 155036285Sbrian f = expect + SOCKET_OVERHEAD; 155136285Sbrian setsockopt(s, SOL_SOCKET, SO_SNDBUF, &f, sizeof f); 155236285Sbrian if (sendmsg(s, &msg, 0) == -1) 155336285Sbrian log_Printf(LogERROR, "Failed sendmsg: %s\n", strerror(errno)); 155436285Sbrian /* We must get the ACK before closing the descriptor ! */ 155536285Sbrian read(s, &ack, 1); 155636345Sbrian 155736452Sbrian newsid = tcgetpgrp(link_fd) == getpgrp(); 155836285Sbrian close(link_fd); 155936452Sbrian if (newsid) 156036452Sbrian bundle_setsid(dl->bundle, 1); 156136285Sbrian } 156236450Sbrian close(s); 156336285Sbrian 156436285Sbrian while (niov--) 156536285Sbrian free(iov[niov].iov_base); 156636285Sbrian} 156736285Sbrian 156836285Sbrianint 156936285Sbrianbundle_RenameDatalink(struct bundle *bundle, struct datalink *ndl, 157036285Sbrian const char *name) 157136285Sbrian{ 157236285Sbrian struct datalink *dl; 157336285Sbrian 157436285Sbrian if (!strcasecmp(ndl->name, name)) 157536285Sbrian return 1; 157636285Sbrian 157736285Sbrian for (dl = bundle->links; dl; dl = dl->next) 157836285Sbrian if (!strcasecmp(dl->name, name)) 157936285Sbrian return 0; 158036285Sbrian 158136285Sbrian datalink_Rename(ndl, name); 158236285Sbrian return 1; 158336285Sbrian} 158436285Sbrian 158536285Sbrianint 158636285Sbrianbundle_SetMode(struct bundle *bundle, struct datalink *dl, int mode) 158736285Sbrian{ 158836285Sbrian int omode; 158936285Sbrian 159036285Sbrian omode = dl->physical->type; 159136285Sbrian if (omode == mode) 159236285Sbrian return 1; 159336285Sbrian 159436928Sbrian if (mode == PHYS_AUTO && !(bundle->phys_type.all & PHYS_AUTO)) 159536928Sbrian /* First auto link */ 159636285Sbrian if (bundle->ncp.ipcp.peer_ip.s_addr == INADDR_ANY) { 159736928Sbrian log_Printf(LogWARN, "You must `set ifaddr' or `open' before" 159836928Sbrian " changing mode to %s\n", mode2Nam(mode)); 159936285Sbrian return 0; 160036285Sbrian } 160136285Sbrian 160236285Sbrian if (!datalink_SetMode(dl, mode)) 160336285Sbrian return 0; 160436285Sbrian 160536928Sbrian if (mode == PHYS_AUTO && !(bundle->phys_type.all & PHYS_AUTO) && 160636928Sbrian bundle->phase != PHASE_NETWORK) 160736928Sbrian /* First auto link, we need an interface */ 160836285Sbrian ipcp_InterfaceUp(&bundle->ncp.ipcp); 160936285Sbrian 161036285Sbrian /* Regenerate phys_type and adjust autoload & idle timers */ 161136285Sbrian bundle_LinksRemoved(bundle); 161236285Sbrian 161336285Sbrian return 1; 161436285Sbrian} 161536452Sbrian 161636452Sbrianvoid 161736452Sbrianbundle_setsid(struct bundle *bundle, int holdsession) 161836452Sbrian{ 161936452Sbrian /* 162036452Sbrian * Lose the current session. This means getting rid of our pid 162136452Sbrian * too so that the tty device will really go away, and any getty 162236452Sbrian * etc will be allowed to restart. 162336452Sbrian */ 162436452Sbrian pid_t pid, orig; 162536452Sbrian int fds[2]; 162636452Sbrian char done; 162736452Sbrian struct datalink *dl; 162836452Sbrian 162936452Sbrian orig = getpid(); 163036452Sbrian if (pipe(fds) == -1) { 163136452Sbrian log_Printf(LogERROR, "pipe: %s\n", strerror(errno)); 163236452Sbrian return; 163336452Sbrian } 163436452Sbrian switch ((pid = fork())) { 163536452Sbrian case -1: 163636452Sbrian log_Printf(LogERROR, "fork: %s\n", strerror(errno)); 163736452Sbrian close(fds[0]); 163836452Sbrian close(fds[1]); 163936452Sbrian return; 164036452Sbrian case 0: 164136452Sbrian close(fds[0]); 164236452Sbrian read(fds[1], &done, 1); /* uu_locks are mine ! */ 164336452Sbrian close(fds[1]); 164436452Sbrian if (pipe(fds) == -1) { 164536452Sbrian log_Printf(LogERROR, "pipe(2): %s\n", strerror(errno)); 164636452Sbrian return; 164736452Sbrian } 164836452Sbrian switch ((pid = fork())) { 164936452Sbrian case -1: 165037019Sbrian log_Printf(LogERROR, "fork(2): %s\n", strerror(errno)); 165136452Sbrian close(fds[0]); 165236452Sbrian close(fds[1]); 165336452Sbrian return; 165436452Sbrian case 0: 165536452Sbrian close(fds[0]); 165636452Sbrian bundle_LockTun(bundle); /* update pid */ 165736452Sbrian read(fds[1], &done, 1); /* uu_locks are mine ! */ 165836452Sbrian close(fds[1]); 165936452Sbrian setsid(); 166036452Sbrian log_Printf(LogPHASE, "%d -> %d: %s session control\n", 166136452Sbrian (int)orig, (int)getpid(), 166236452Sbrian holdsession ? "Passed" : "Dropped"); 166341799Sbrian timer_InitService(0); /* Start the Timer Service */ 166436452Sbrian break; 166536452Sbrian default: 166636452Sbrian close(fds[1]); 166736452Sbrian /* Give away all our modem locks (to the final process) */ 166836452Sbrian for (dl = bundle->links; dl; dl = dl->next) 166936452Sbrian if (dl->state != DATALINK_CLOSED) 167036452Sbrian modem_ChangedPid(dl->physical, pid); 167136452Sbrian write(fds[0], "!", 1); /* done */ 167236452Sbrian close(fds[0]); 167336452Sbrian exit(0); 167436452Sbrian break; 167536452Sbrian } 167636452Sbrian break; 167736452Sbrian default: 167836452Sbrian close(fds[1]); 167936452Sbrian /* Give away all our modem locks (to the intermediate process) */ 168036452Sbrian for (dl = bundle->links; dl; dl = dl->next) 168136452Sbrian if (dl->state != DATALINK_CLOSED) 168236452Sbrian modem_ChangedPid(dl->physical, pid); 168336452Sbrian write(fds[0], "!", 1); /* done */ 168436452Sbrian close(fds[0]); 168536452Sbrian if (holdsession) { 168636452Sbrian int fd, status; 168736452Sbrian 168836452Sbrian timer_TermService(); 168936452Sbrian signal(SIGPIPE, SIG_DFL); 169036452Sbrian signal(SIGALRM, SIG_DFL); 169136452Sbrian signal(SIGHUP, SIG_DFL); 169236452Sbrian signal(SIGTERM, SIG_DFL); 169336452Sbrian signal(SIGINT, SIG_DFL); 169436452Sbrian signal(SIGQUIT, SIG_DFL); 169536452Sbrian for (fd = getdtablesize(); fd >= 0; fd--) 169636452Sbrian close(fd); 169736452Sbrian setuid(geteuid()); 169836452Sbrian /* 169936452Sbrian * Reap the intermediate process. As we're not exiting but the 170036452Sbrian * intermediate is, we don't want it to become defunct. 170136452Sbrian */ 170236452Sbrian waitpid(pid, &status, 0); 170336467Sbrian /* Tweak our process arguments.... */ 170436467Sbrian bundle->argv[0] = "session owner"; 170536467Sbrian bundle->argv[1] = NULL; 170636452Sbrian /* 170736452Sbrian * Hang around for a HUP. This should happen as soon as the 170836452Sbrian * ppp that we passed our ctty descriptor to closes it. 170936452Sbrian * NOTE: If this process dies, the passed descriptor becomes 171036452Sbrian * invalid and will give a select() error by setting one 171136452Sbrian * of the error fds, aborting the other ppp. We don't 171236452Sbrian * want that to happen ! 171336452Sbrian */ 171436452Sbrian pause(); 171536452Sbrian } 171636452Sbrian exit(0); 171736452Sbrian break; 171836452Sbrian } 171936452Sbrian} 172040622Sbrian 172140622Sbrianint 172240622Sbrianbundle_HighestState(struct bundle *bundle) 172340622Sbrian{ 172440622Sbrian struct datalink *dl; 172540622Sbrian int result = DATALINK_CLOSED; 172640622Sbrian 172740622Sbrian for (dl = bundle->links; dl; dl = dl->next) 172840622Sbrian if (result < dl->state) 172940622Sbrian result = dl->state; 173040622Sbrian 173140622Sbrian return result; 173240622Sbrian} 173341654Sbrian 173441654Sbrianint 173541654Sbrianbundle_Exception(struct bundle *bundle, int fd) 173641654Sbrian{ 173741654Sbrian struct datalink *dl; 173841654Sbrian 173941654Sbrian for (dl = bundle->links; dl; dl = dl->next) 174041654Sbrian if (dl->physical->fd == fd) { 174141654Sbrian datalink_Down(dl, CLOSE_NORMAL); 174241654Sbrian return 1; 174341654Sbrian } 174441654Sbrian 174541654Sbrian return 0; 174641654Sbrian} 1747