bundle.c revision 40665
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 * 2640665Sbrian * $Id: bundle.c,v 1.37 1998/10/24 01:08:45 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; 76536285Sbrian 76636285Sbrian s = socket(AF_INET, SOCK_DGRAM, 0); 76736285Sbrian if (s < 0) { 76836285Sbrian log_Printf(LogERROR, "bundle_Create: socket(): %s\n", strerror(errno)); 76936285Sbrian close(bundle.dev.fd); 77036285Sbrian return NULL; 77136285Sbrian } 77236285Sbrian 77340561Sbrian ifname = strrchr(bundle.dev.Name, '/'); 77440561Sbrian if (ifname == NULL) 77540561Sbrian ifname = bundle.dev.Name; 77636285Sbrian else 77740561Sbrian ifname++; 77836285Sbrian 77940561Sbrian bundle.iface = iface_Create(ifname); 78040561Sbrian if (bundle.iface == NULL) { 78140561Sbrian close(s); 78240561Sbrian close(bundle.dev.fd); 78340561Sbrian return NULL; 78440561Sbrian } 78540561Sbrian 78636285Sbrian /* 78736285Sbrian * Now, bring up the interface. 78836285Sbrian */ 78936285Sbrian memset(&ifrq, '\0', sizeof ifrq); 79040561Sbrian strncpy(ifrq.ifr_name, ifname, sizeof ifrq.ifr_name - 1); 79136285Sbrian ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0'; 79236285Sbrian if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { 79337019Sbrian log_Printf(LogERROR, "bundle_Create: ioctl(SIOCGIFFLAGS): %s\n", 79436285Sbrian strerror(errno)); 79536285Sbrian close(s); 79640561Sbrian iface_Destroy(bundle.iface); 79740561Sbrian bundle.iface = NULL; 79836285Sbrian close(bundle.dev.fd); 79936285Sbrian return NULL; 80036285Sbrian } 80136285Sbrian ifrq.ifr_flags |= IFF_UP; 80236285Sbrian if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { 80337019Sbrian log_Printf(LogERROR, "bundle_Create: ioctl(SIOCSIFFLAGS): %s\n", 80436285Sbrian strerror(errno)); 80536285Sbrian close(s); 80640561Sbrian iface_Destroy(bundle.iface); 80740561Sbrian bundle.iface = NULL; 80836285Sbrian close(bundle.dev.fd); 80936285Sbrian return NULL; 81036285Sbrian } 81136285Sbrian 81236285Sbrian close(s); 81336285Sbrian 81440561Sbrian log_Printf(LogPHASE, "Using interface: %s\n", ifname); 81536285Sbrian 81640561Sbrian bundle.ifSpeed = 0; 81736285Sbrian 81836285Sbrian bundle.routing_seq = 0; 81936285Sbrian bundle.phase = PHASE_DEAD; 82036285Sbrian bundle.CleaningUp = 0; 82137191Sbrian bundle.AliasEnabled = 0; 82236285Sbrian 82336285Sbrian bundle.fsm.LayerStart = bundle_LayerStart; 82436285Sbrian bundle.fsm.LayerUp = bundle_LayerUp; 82536285Sbrian bundle.fsm.LayerDown = bundle_LayerDown; 82636285Sbrian bundle.fsm.LayerFinish = bundle_LayerFinish; 82736285Sbrian bundle.fsm.object = &bundle; 82836285Sbrian 82936285Sbrian bundle.cfg.idle_timeout = NCP_IDLE_TIMEOUT; 83036285Sbrian *bundle.cfg.auth.name = '\0'; 83136285Sbrian *bundle.cfg.auth.key = '\0'; 83236285Sbrian bundle.cfg.opt = OPT_SROUTES | OPT_IDCHECK | OPT_LOOPBACK | 83336285Sbrian OPT_THROUGHPUT | OPT_UTMP; 83436285Sbrian *bundle.cfg.label = '\0'; 83536285Sbrian bundle.cfg.mtu = DEF_MTU; 83636285Sbrian bundle.cfg.autoload.max.packets = 0; 83736285Sbrian bundle.cfg.autoload.max.timeout = 0; 83836285Sbrian bundle.cfg.autoload.min.packets = 0; 83936285Sbrian bundle.cfg.autoload.min.timeout = 0; 84038544Sbrian bundle.cfg.choked.timeout = CHOKED_TIMEOUT; 84136928Sbrian bundle.phys_type.all = type; 84236928Sbrian bundle.phys_type.open = 0; 84336285Sbrian 84436285Sbrian bundle.links = datalink_Create("deflink", &bundle, type); 84536285Sbrian if (bundle.links == NULL) { 84637019Sbrian log_Printf(LogALERT, "Cannot create data link: %s\n", strerror(errno)); 84740561Sbrian iface_Destroy(bundle.iface); 84840561Sbrian bundle.iface = NULL; 84936285Sbrian close(bundle.dev.fd); 85036285Sbrian return NULL; 85136285Sbrian } 85236285Sbrian 85336285Sbrian bundle.desc.type = BUNDLE_DESCRIPTOR; 85436285Sbrian bundle.desc.UpdateSet = bundle_UpdateSet; 85536285Sbrian bundle.desc.IsSet = bundle_IsSet; 85636285Sbrian bundle.desc.Read = bundle_DescriptorRead; 85736285Sbrian bundle.desc.Write = bundle_DescriptorWrite; 85836285Sbrian 85936285Sbrian mp_Init(&bundle.ncp.mp, &bundle); 86036285Sbrian 86136285Sbrian /* Send over the first physical link by default */ 86236285Sbrian ipcp_Init(&bundle.ncp.ipcp, &bundle, &bundle.links->physical->link, 86336285Sbrian &bundle.fsm); 86436285Sbrian 86536285Sbrian memset(&bundle.filter, '\0', sizeof bundle.filter); 86636285Sbrian bundle.filter.in.fragok = bundle.filter.in.logok = 1; 86736285Sbrian bundle.filter.in.name = "IN"; 86836285Sbrian bundle.filter.out.fragok = bundle.filter.out.logok = 1; 86936285Sbrian bundle.filter.out.name = "OUT"; 87036285Sbrian bundle.filter.dial.name = "DIAL"; 87136285Sbrian bundle.filter.dial.logok = 1; 87236285Sbrian bundle.filter.alive.name = "ALIVE"; 87336285Sbrian bundle.filter.alive.logok = 1; 87436285Sbrian memset(&bundle.idle.timer, '\0', sizeof bundle.idle.timer); 87536285Sbrian bundle.idle.done = 0; 87636285Sbrian bundle.notify.fd = -1; 87736285Sbrian memset(&bundle.autoload.timer, '\0', sizeof bundle.autoload.timer); 87836285Sbrian bundle.autoload.done = 0; 87936285Sbrian bundle.autoload.running = 0; 88038544Sbrian memset(&bundle.choked.timer, '\0', sizeof bundle.choked.timer); 88136285Sbrian 88236285Sbrian /* Clean out any leftover crud */ 88340561Sbrian iface_Clear(bundle.iface, IFACE_CLEAR_ALL); 88436285Sbrian 88536452Sbrian bundle_LockTun(&bundle); 88636452Sbrian 88736285Sbrian return &bundle; 88836285Sbrian} 88936285Sbrian 89036285Sbrianstatic void 89136285Sbrianbundle_DownInterface(struct bundle *bundle) 89236285Sbrian{ 89336285Sbrian struct ifreq ifrq; 89436285Sbrian int s; 89536285Sbrian 89636285Sbrian route_IfDelete(bundle, 1); 89736285Sbrian 89836285Sbrian s = ID0socket(AF_INET, SOCK_DGRAM, 0); 89936285Sbrian if (s < 0) { 90036285Sbrian log_Printf(LogERROR, "bundle_DownInterface: socket: %s\n", strerror(errno)); 90136285Sbrian return; 90236285Sbrian } 90336285Sbrian 90436285Sbrian memset(&ifrq, '\0', sizeof ifrq); 90540561Sbrian strncpy(ifrq.ifr_name, bundle->iface->name, sizeof ifrq.ifr_name - 1); 90636285Sbrian ifrq.ifr_name[sizeof ifrq.ifr_name - 1] = '\0'; 90736285Sbrian if (ID0ioctl(s, SIOCGIFFLAGS, &ifrq) < 0) { 90836285Sbrian log_Printf(LogERROR, "bundle_DownInterface: ioctl(SIOCGIFFLAGS): %s\n", 90936285Sbrian strerror(errno)); 91036285Sbrian close(s); 91136285Sbrian return; 91236285Sbrian } 91336285Sbrian ifrq.ifr_flags &= ~IFF_UP; 91436285Sbrian if (ID0ioctl(s, SIOCSIFFLAGS, &ifrq) < 0) { 91536285Sbrian log_Printf(LogERROR, "bundle_DownInterface: ioctl(SIOCSIFFLAGS): %s\n", 91636285Sbrian strerror(errno)); 91736285Sbrian close(s); 91836285Sbrian return; 91936285Sbrian } 92036285Sbrian close(s); 92136285Sbrian} 92236285Sbrian 92336285Sbrianvoid 92436285Sbrianbundle_Destroy(struct bundle *bundle) 92536285Sbrian{ 92636285Sbrian struct datalink *dl; 92736285Sbrian 92836285Sbrian /* 92936285Sbrian * Clean up the interface. We don't need to timer_Stop()s, mp_Down(), 93036285Sbrian * ipcp_CleanInterface() and bundle_DownInterface() unless we're getting 93136285Sbrian * out under exceptional conditions such as a descriptor exception. 93236285Sbrian */ 93336285Sbrian timer_Stop(&bundle->idle.timer); 93438544Sbrian timer_Stop(&bundle->choked.timer); 93536285Sbrian timer_Stop(&bundle->autoload.timer); 93636285Sbrian mp_Down(&bundle->ncp.mp); 93736285Sbrian ipcp_CleanInterface(&bundle->ncp.ipcp); 93836285Sbrian bundle_DownInterface(bundle); 93936452Sbrian 94036285Sbrian /* Again, these are all DATALINK_CLOSED unless we're abending */ 94136285Sbrian dl = bundle->links; 94236285Sbrian while (dl) 94336285Sbrian dl = datalink_Destroy(dl); 94436285Sbrian 94536452Sbrian close(bundle->dev.fd); 94636452Sbrian bundle_UnlockTun(bundle); 94736452Sbrian 94836285Sbrian /* In case we never made PHASE_NETWORK */ 94936285Sbrian bundle_Notify(bundle, EX_ERRDEAD); 95036285Sbrian 95140561Sbrian iface_Destroy(bundle->iface); 95240561Sbrian bundle->iface = NULL; 95336285Sbrian} 95436285Sbrian 95536285Sbrianstruct rtmsg { 95636285Sbrian struct rt_msghdr m_rtm; 95736285Sbrian char m_space[64]; 95836285Sbrian}; 95936285Sbrian 96036285Sbrianint 96136285Sbrianbundle_SetRoute(struct bundle *bundle, int cmd, struct in_addr dst, 96237927Sbrian struct in_addr gateway, struct in_addr mask, int bang, int ssh) 96336285Sbrian{ 96436285Sbrian struct rtmsg rtmes; 96536285Sbrian int s, nb, wb; 96636285Sbrian char *cp; 96736285Sbrian const char *cmdstr; 96836285Sbrian struct sockaddr_in rtdata; 96936285Sbrian int result = 1; 97036285Sbrian 97136285Sbrian if (bang) 97236285Sbrian cmdstr = (cmd == RTM_ADD ? "Add!" : "Delete!"); 97336285Sbrian else 97436285Sbrian cmdstr = (cmd == RTM_ADD ? "Add" : "Delete"); 97536285Sbrian s = ID0socket(PF_ROUTE, SOCK_RAW, 0); 97636285Sbrian if (s < 0) { 97736285Sbrian log_Printf(LogERROR, "bundle_SetRoute: socket(): %s\n", strerror(errno)); 97836285Sbrian return result; 97936285Sbrian } 98036285Sbrian memset(&rtmes, '\0', sizeof rtmes); 98136285Sbrian rtmes.m_rtm.rtm_version = RTM_VERSION; 98236285Sbrian rtmes.m_rtm.rtm_type = cmd; 98336285Sbrian rtmes.m_rtm.rtm_addrs = RTA_DST; 98436285Sbrian rtmes.m_rtm.rtm_seq = ++bundle->routing_seq; 98536285Sbrian rtmes.m_rtm.rtm_pid = getpid(); 98636285Sbrian rtmes.m_rtm.rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC; 98736285Sbrian 98840665Sbrian if (cmd == RTM_ADD || cmd == RTM_CHANGE) { 98940665Sbrian if (bundle->ncp.ipcp.cfg.sendpipe > 0) { 99040665Sbrian rtmes.m_rtm.rtm_rmx.rmx_sendpipe = bundle->ncp.ipcp.cfg.sendpipe; 99140665Sbrian rtmes.m_rtm.rtm_inits |= RTV_SPIPE; 99240665Sbrian } 99340665Sbrian if (bundle->ncp.ipcp.cfg.recvpipe > 0) { 99440665Sbrian rtmes.m_rtm.rtm_rmx.rmx_recvpipe = bundle->ncp.ipcp.cfg.recvpipe; 99540665Sbrian rtmes.m_rtm.rtm_inits |= RTV_RPIPE; 99640665Sbrian } 99740665Sbrian } 99840665Sbrian 99936285Sbrian memset(&rtdata, '\0', sizeof rtdata); 100036285Sbrian rtdata.sin_len = sizeof rtdata; 100136285Sbrian rtdata.sin_family = AF_INET; 100236285Sbrian rtdata.sin_port = 0; 100336285Sbrian rtdata.sin_addr = dst; 100436285Sbrian 100536285Sbrian cp = rtmes.m_space; 100636285Sbrian memcpy(cp, &rtdata, rtdata.sin_len); 100736285Sbrian cp += rtdata.sin_len; 100836285Sbrian if (cmd == RTM_ADD) { 100936285Sbrian if (gateway.s_addr == INADDR_ANY) { 101040561Sbrian log_Printf(LogERROR, "bundle_SetRoute: Cannot add a route with" 101140561Sbrian " destination 0.0.0.0\n"); 101240561Sbrian close(s); 101340561Sbrian return result; 101436285Sbrian } else { 101536285Sbrian rtdata.sin_addr = gateway; 101636285Sbrian memcpy(cp, &rtdata, rtdata.sin_len); 101736285Sbrian cp += rtdata.sin_len; 101836285Sbrian rtmes.m_rtm.rtm_addrs |= RTA_GATEWAY; 101936285Sbrian } 102036285Sbrian } 102136285Sbrian 102236285Sbrian if (dst.s_addr == INADDR_ANY) 102336285Sbrian mask.s_addr = INADDR_ANY; 102436285Sbrian 102536285Sbrian if (cmd == RTM_ADD || dst.s_addr == INADDR_ANY) { 102636285Sbrian rtdata.sin_addr = mask; 102736285Sbrian memcpy(cp, &rtdata, rtdata.sin_len); 102836285Sbrian cp += rtdata.sin_len; 102936285Sbrian rtmes.m_rtm.rtm_addrs |= RTA_NETMASK; 103036285Sbrian } 103136285Sbrian 103236285Sbrian nb = cp - (char *) &rtmes; 103336285Sbrian rtmes.m_rtm.rtm_msglen = nb; 103436285Sbrian wb = ID0write(s, &rtmes, nb); 103536285Sbrian if (wb < 0) { 103636285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute failure:\n"); 103736285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Cmd = %s\n", cmdstr); 103836285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Dst = %s\n", inet_ntoa(dst)); 103936285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Gateway = %s\n", inet_ntoa(gateway)); 104036285Sbrian log_Printf(LogTCPIP, "bundle_SetRoute: Mask = %s\n", inet_ntoa(mask)); 104136285Sbrianfailed: 104236285Sbrian if (cmd == RTM_ADD && (rtmes.m_rtm.rtm_errno == EEXIST || 104336285Sbrian (rtmes.m_rtm.rtm_errno == 0 && errno == EEXIST))) { 104436285Sbrian if (!bang) { 104536285Sbrian log_Printf(LogWARN, "Add route failed: %s already exists\n", 104640665Sbrian dst.s_addr == 0 ? "default" : inet_ntoa(dst)); 104736285Sbrian result = 0; /* Don't add to our dynamic list */ 104836285Sbrian } else { 104936285Sbrian rtmes.m_rtm.rtm_type = cmd = RTM_CHANGE; 105036285Sbrian if ((wb = ID0write(s, &rtmes, nb)) < 0) 105136285Sbrian goto failed; 105236285Sbrian } 105336285Sbrian } else if (cmd == RTM_DELETE && 105436285Sbrian (rtmes.m_rtm.rtm_errno == ESRCH || 105536285Sbrian (rtmes.m_rtm.rtm_errno == 0 && errno == ESRCH))) { 105636285Sbrian if (!bang) 105736285Sbrian log_Printf(LogWARN, "Del route failed: %s: Non-existent\n", 105836285Sbrian inet_ntoa(dst)); 105937927Sbrian } else if (rtmes.m_rtm.rtm_errno == 0) { 106037927Sbrian if (!ssh || errno != ENETUNREACH) 106137927Sbrian log_Printf(LogWARN, "%s route failed: %s: errno: %s\n", cmdstr, 106237927Sbrian inet_ntoa(dst), strerror(errno)); 106337927Sbrian } else 106436285Sbrian log_Printf(LogWARN, "%s route failed: %s: %s\n", 106537927Sbrian cmdstr, inet_ntoa(dst), strerror(rtmes.m_rtm.rtm_errno)); 106636285Sbrian } 106736285Sbrian log_Printf(LogDEBUG, "wrote %d: cmd = %s, dst = %x, gateway = %x\n", 106836285Sbrian wb, cmdstr, (unsigned)dst.s_addr, (unsigned)gateway.s_addr); 106936285Sbrian close(s); 107036285Sbrian 107136285Sbrian return result; 107236285Sbrian} 107336285Sbrian 107436285Sbrianvoid 107536285Sbrianbundle_LinkClosed(struct bundle *bundle, struct datalink *dl) 107636285Sbrian{ 107736285Sbrian /* 107836285Sbrian * Our datalink has closed. 107936285Sbrian * CleanDatalinks() (called from DoLoop()) will remove closed 108036465Sbrian * BACKGROUND and DIRECT links. 108136285Sbrian * If it's the last data link, enter phase DEAD. 108236285Sbrian * 108336285Sbrian * NOTE: dl may not be in our list (bundle_SendDatalink()) ! 108436285Sbrian */ 108536285Sbrian 108636285Sbrian struct datalink *odl; 108736285Sbrian int other_links; 108836285Sbrian 108938200Sbrian log_SetTtyCommandMode(dl); 109038200Sbrian 109136285Sbrian other_links = 0; 109236285Sbrian for (odl = bundle->links; odl; odl = odl->next) 109336285Sbrian if (odl != dl && odl->state != DATALINK_CLOSED) 109436285Sbrian other_links++; 109536285Sbrian 109636285Sbrian if (!other_links) { 109736465Sbrian if (dl->physical->type != PHYS_AUTO) /* Not in -auto mode */ 109836285Sbrian bundle_DownInterface(bundle); 109937060Sbrian fsm2initial(&bundle->ncp.ipcp.fsm); 110036285Sbrian bundle_NewPhase(bundle, PHASE_DEAD); 110136314Sbrian bundle_StopIdleTimer(bundle); 110236285Sbrian bundle_StopAutoLoadTimer(bundle); 110336285Sbrian bundle->autoload.running = 0; 110436285Sbrian } else 110536285Sbrian bundle->autoload.running = 1; 110636285Sbrian} 110736285Sbrian 110836285Sbrianvoid 110937955Sbrianbundle_Open(struct bundle *bundle, const char *name, int mask, int force) 111036285Sbrian{ 111136285Sbrian /* 111236285Sbrian * Please open the given datalink, or all if name == NULL 111336285Sbrian */ 111436285Sbrian struct datalink *dl; 111536285Sbrian 111636285Sbrian timer_Stop(&bundle->autoload.timer); 111736285Sbrian for (dl = bundle->links; dl; dl = dl->next) 111836285Sbrian if (name == NULL || !strcasecmp(dl->name, name)) { 111937955Sbrian if ((mask & dl->physical->type) && 112037955Sbrian (dl->state == DATALINK_CLOSED || 112137955Sbrian (force && dl->state == DATALINK_OPENING && 112237955Sbrian dl->dial_timer.state == TIMER_RUNNING))) { 112337955Sbrian if (force) 112437955Sbrian timer_Stop(&dl->dial_timer); 112536285Sbrian datalink_Up(dl, 1, 1); 112636465Sbrian if (mask == PHYS_AUTO) 112736465Sbrian /* Only one AUTO link at a time (see the AutoLoad timer) */ 112836285Sbrian break; 112936285Sbrian } 113036285Sbrian if (name != NULL) 113136285Sbrian break; 113236285Sbrian } 113336285Sbrian} 113436285Sbrian 113536285Sbrianstruct datalink * 113636285Sbrianbundle2datalink(struct bundle *bundle, const char *name) 113736285Sbrian{ 113836285Sbrian struct datalink *dl; 113936285Sbrian 114036285Sbrian if (name != NULL) { 114136285Sbrian for (dl = bundle->links; dl; dl = dl->next) 114236285Sbrian if (!strcasecmp(dl->name, name)) 114336285Sbrian return dl; 114436285Sbrian } else if (bundle->links && !bundle->links->next) 114536285Sbrian return bundle->links; 114636285Sbrian 114736285Sbrian return NULL; 114836285Sbrian} 114936285Sbrian 115036285Sbrianint 115136285Sbrianbundle_FillQueues(struct bundle *bundle) 115236285Sbrian{ 115336285Sbrian int total; 115436285Sbrian 115536285Sbrian if (bundle->ncp.mp.active) 115636285Sbrian total = mp_FillQueues(bundle); 115736285Sbrian else { 115836285Sbrian struct datalink *dl; 115936285Sbrian int add; 116036285Sbrian 116136285Sbrian for (total = 0, dl = bundle->links; dl; dl = dl->next) 116236285Sbrian if (dl->state == DATALINK_OPEN) { 116336285Sbrian add = link_QueueLen(&dl->physical->link); 116436285Sbrian if (add == 0 && dl->physical->out == NULL) 116536285Sbrian add = ip_FlushPacket(&dl->physical->link, bundle); 116636285Sbrian total += add; 116736285Sbrian } 116836285Sbrian } 116936285Sbrian 117038557Sbrian return total + ip_QueueLen(&bundle->ncp.ipcp); 117136285Sbrian} 117236285Sbrian 117336285Sbrianint 117436285Sbrianbundle_ShowLinks(struct cmdargs const *arg) 117536285Sbrian{ 117636285Sbrian struct datalink *dl; 117736285Sbrian 117836285Sbrian for (dl = arg->bundle->links; dl; dl = dl->next) { 117936316Sbrian prompt_Printf(arg->prompt, "Name: %s [%s, %s]", 118036316Sbrian dl->name, mode2Nam(dl->physical->type), datalink_State(dl)); 118136285Sbrian if (dl->physical->link.throughput.rolling && dl->state == DATALINK_OPEN) 118236316Sbrian prompt_Printf(arg->prompt, " weight %d, %d bytes/sec", 118336285Sbrian dl->mp.weight, 118436285Sbrian dl->physical->link.throughput.OctetsPerSecond); 118536285Sbrian prompt_Printf(arg->prompt, "\n"); 118636285Sbrian } 118736285Sbrian 118836285Sbrian return 0; 118936285Sbrian} 119036285Sbrian 119136285Sbrianstatic const char * 119236285Sbrianoptval(struct bundle *bundle, int bit) 119336285Sbrian{ 119436285Sbrian return (bundle->cfg.opt & bit) ? "enabled" : "disabled"; 119536285Sbrian} 119636285Sbrian 119736285Sbrianint 119836285Sbrianbundle_ShowStatus(struct cmdargs const *arg) 119936285Sbrian{ 120036285Sbrian int remaining; 120136285Sbrian 120236285Sbrian prompt_Printf(arg->prompt, "Phase %s\n", bundle_PhaseName(arg->bundle)); 120336285Sbrian prompt_Printf(arg->prompt, " Device: %s\n", arg->bundle->dev.Name); 120436285Sbrian prompt_Printf(arg->prompt, " Interface: %s @ %lubps\n", 120540561Sbrian arg->bundle->iface->name, arg->bundle->ifSpeed); 120636285Sbrian 120736285Sbrian prompt_Printf(arg->prompt, "\nDefaults:\n"); 120836285Sbrian prompt_Printf(arg->prompt, " Label: %s\n", arg->bundle->cfg.label); 120936285Sbrian prompt_Printf(arg->prompt, " Auth name: %s\n", 121036285Sbrian arg->bundle->cfg.auth.name); 121136285Sbrian prompt_Printf(arg->prompt, " Auto Load: Up after %ds of >= %d packets\n", 121236285Sbrian arg->bundle->cfg.autoload.max.timeout, 121336285Sbrian arg->bundle->cfg.autoload.max.packets); 121436285Sbrian prompt_Printf(arg->prompt, " Down after %ds of <= %d" 121536285Sbrian " packets\n", arg->bundle->cfg.autoload.min.timeout, 121636285Sbrian arg->bundle->cfg.autoload.min.packets); 121736285Sbrian if (arg->bundle->autoload.timer.state == TIMER_RUNNING) 121836285Sbrian prompt_Printf(arg->prompt, " %ds remaining 'till " 121936285Sbrian "a link comes %s\n", 122036285Sbrian bundle_RemainingAutoLoadTime(arg->bundle), 122136285Sbrian arg->bundle->autoload.comingup ? "up" : "down"); 122236285Sbrian else 122336285Sbrian prompt_Printf(arg->prompt, " %srunning with %d" 122436285Sbrian " packets queued\n", arg->bundle->autoload.running ? 122538557Sbrian "" : "not ", ip_QueueLen(&arg->bundle->ncp.ipcp)); 122636285Sbrian 122738544Sbrian prompt_Printf(arg->prompt, " Choked Timer: %ds\n", 122838544Sbrian arg->bundle->cfg.choked.timeout); 122936285Sbrian prompt_Printf(arg->prompt, " Idle Timer: "); 123036285Sbrian if (arg->bundle->cfg.idle_timeout) { 123136285Sbrian prompt_Printf(arg->prompt, "%ds", arg->bundle->cfg.idle_timeout); 123236285Sbrian remaining = bundle_RemainingIdleTime(arg->bundle); 123336285Sbrian if (remaining != -1) 123436285Sbrian prompt_Printf(arg->prompt, " (%ds remaining)", remaining); 123536285Sbrian prompt_Printf(arg->prompt, "\n"); 123636285Sbrian } else 123736285Sbrian prompt_Printf(arg->prompt, "disabled\n"); 123836285Sbrian prompt_Printf(arg->prompt, " MTU: "); 123936285Sbrian if (arg->bundle->cfg.mtu) 124036285Sbrian prompt_Printf(arg->prompt, "%d\n", arg->bundle->cfg.mtu); 124136285Sbrian else 124236285Sbrian prompt_Printf(arg->prompt, "unspecified\n"); 124336285Sbrian 124440665Sbrian prompt_Printf(arg->prompt, " sendpipe: "); 124540665Sbrian if (arg->bundle->ncp.ipcp.cfg.sendpipe > 0) 124640665Sbrian prompt_Printf(arg->prompt, "%ld\n", arg->bundle->ncp.ipcp.cfg.sendpipe); 124740665Sbrian else 124840665Sbrian prompt_Printf(arg->prompt, "unspecified\n"); 124940665Sbrian prompt_Printf(arg->prompt, " recvpipe: "); 125040665Sbrian if (arg->bundle->ncp.ipcp.cfg.recvpipe > 0) 125140665Sbrian prompt_Printf(arg->prompt, "%ld\n", arg->bundle->ncp.ipcp.cfg.recvpipe); 125240665Sbrian else 125340665Sbrian prompt_Printf(arg->prompt, "unspecified\n"); 125440665Sbrian 125536285Sbrian prompt_Printf(arg->prompt, " Sticky Routes: %s\n", 125636285Sbrian optval(arg->bundle, OPT_SROUTES)); 125736285Sbrian prompt_Printf(arg->prompt, " ID check: %s\n", 125836285Sbrian optval(arg->bundle, OPT_IDCHECK)); 125936285Sbrian prompt_Printf(arg->prompt, " Loopback: %s\n", 126036285Sbrian optval(arg->bundle, OPT_LOOPBACK)); 126136285Sbrian prompt_Printf(arg->prompt, " PasswdAuth: %s\n", 126236285Sbrian optval(arg->bundle, OPT_PASSWDAUTH)); 126336285Sbrian prompt_Printf(arg->prompt, " Proxy: %s\n", 126436285Sbrian optval(arg->bundle, OPT_PROXY)); 126540665Sbrian prompt_Printf(arg->prompt, " Proxyall: %s\n", 126640665Sbrian optval(arg->bundle, OPT_PROXYALL)); 126736285Sbrian prompt_Printf(arg->prompt, " Throughput: %s\n", 126836285Sbrian optval(arg->bundle, OPT_THROUGHPUT)); 126936285Sbrian prompt_Printf(arg->prompt, " Utmp Logging: %s\n", 127036285Sbrian optval(arg->bundle, OPT_UTMP)); 127140561Sbrian prompt_Printf(arg->prompt, " Iface-Alias: %s\n", 127240561Sbrian optval(arg->bundle, OPT_IFACEALIAS)); 127336285Sbrian 127436285Sbrian return 0; 127536285Sbrian} 127636285Sbrian 127736285Sbrianstatic void 127836285Sbrianbundle_IdleTimeout(void *v) 127936285Sbrian{ 128036285Sbrian struct bundle *bundle = (struct bundle *)v; 128136285Sbrian 128236285Sbrian log_Printf(LogPHASE, "Idle timer expired.\n"); 128336285Sbrian bundle_StopIdleTimer(bundle); 128437007Sbrian bundle_Close(bundle, NULL, CLOSE_STAYDOWN); 128536285Sbrian} 128636285Sbrian 128736285Sbrian/* 128836285Sbrian * Start Idle timer. If timeout is reached, we call bundle_Close() to 128936285Sbrian * close LCP and link. 129036285Sbrian */ 129136285Sbrianvoid 129236285Sbrianbundle_StartIdleTimer(struct bundle *bundle) 129336285Sbrian{ 129436285Sbrian timer_Stop(&bundle->idle.timer); 129536928Sbrian if ((bundle->phys_type.open & (PHYS_DEDICATED|PHYS_DDIAL)) != 129636928Sbrian bundle->phys_type.open && bundle->cfg.idle_timeout) { 129736285Sbrian bundle->idle.timer.func = bundle_IdleTimeout; 129836285Sbrian bundle->idle.timer.name = "idle"; 129936285Sbrian bundle->idle.timer.load = bundle->cfg.idle_timeout * SECTICKS; 130036285Sbrian bundle->idle.timer.arg = bundle; 130136285Sbrian timer_Start(&bundle->idle.timer); 130236285Sbrian bundle->idle.done = time(NULL) + bundle->cfg.idle_timeout; 130336285Sbrian } 130436285Sbrian} 130536285Sbrian 130636285Sbrianvoid 130736285Sbrianbundle_SetIdleTimer(struct bundle *bundle, int value) 130836285Sbrian{ 130936285Sbrian bundle->cfg.idle_timeout = value; 131036285Sbrian if (bundle_LinkIsUp(bundle)) 131136285Sbrian bundle_StartIdleTimer(bundle); 131236285Sbrian} 131336285Sbrian 131436285Sbrianvoid 131536285Sbrianbundle_StopIdleTimer(struct bundle *bundle) 131636285Sbrian{ 131736285Sbrian timer_Stop(&bundle->idle.timer); 131836285Sbrian bundle->idle.done = 0; 131936285Sbrian} 132036285Sbrian 132136285Sbrianstatic int 132236285Sbrianbundle_RemainingIdleTime(struct bundle *bundle) 132336285Sbrian{ 132436285Sbrian if (bundle->idle.done) 132536285Sbrian return bundle->idle.done - time(NULL); 132636285Sbrian return -1; 132736285Sbrian} 132836285Sbrian 132936285Sbrianint 133036285Sbrianbundle_IsDead(struct bundle *bundle) 133136285Sbrian{ 133236285Sbrian return !bundle->links || (bundle->phase == PHASE_DEAD && bundle->CleaningUp); 133336285Sbrian} 133436285Sbrian 133536285Sbrianstatic struct datalink * 133636285Sbrianbundle_DatalinkLinkout(struct bundle *bundle, struct datalink *dl) 133736285Sbrian{ 133836285Sbrian struct datalink **dlp; 133936285Sbrian 134036314Sbrian for (dlp = &bundle->links; *dlp; dlp = &(*dlp)->next) 134136314Sbrian if (*dlp == dl) { 134236314Sbrian *dlp = dl->next; 134336314Sbrian dl->next = NULL; 134436314Sbrian bundle_LinksRemoved(bundle); 134536314Sbrian return dl; 134636314Sbrian } 134736285Sbrian 134836285Sbrian return NULL; 134936285Sbrian} 135036285Sbrian 135136285Sbrianstatic void 135236285Sbrianbundle_DatalinkLinkin(struct bundle *bundle, struct datalink *dl) 135336285Sbrian{ 135436285Sbrian struct datalink **dlp = &bundle->links; 135536285Sbrian 135636285Sbrian while (*dlp) 135736285Sbrian dlp = &(*dlp)->next; 135836285Sbrian 135936285Sbrian *dlp = dl; 136036285Sbrian dl->next = NULL; 136136285Sbrian 136236285Sbrian bundle_LinkAdded(bundle, dl); 136336285Sbrian} 136436285Sbrian 136536285Sbrianvoid 136636285Sbrianbundle_CleanDatalinks(struct bundle *bundle) 136736285Sbrian{ 136836285Sbrian struct datalink **dlp = &bundle->links; 136936285Sbrian int found = 0; 137036285Sbrian 137136285Sbrian while (*dlp) 137236285Sbrian if ((*dlp)->state == DATALINK_CLOSED && 137336465Sbrian (*dlp)->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND)) { 137436285Sbrian *dlp = datalink_Destroy(*dlp); 137536285Sbrian found++; 137636285Sbrian } else 137736285Sbrian dlp = &(*dlp)->next; 137836285Sbrian 137936285Sbrian if (found) 138036285Sbrian bundle_LinksRemoved(bundle); 138136285Sbrian} 138236285Sbrian 138336285Sbrianint 138436285Sbrianbundle_DatalinkClone(struct bundle *bundle, struct datalink *dl, 138536285Sbrian const char *name) 138636285Sbrian{ 138736285Sbrian if (bundle2datalink(bundle, name)) { 138836285Sbrian log_Printf(LogWARN, "Clone: %s: name already exists\n", name); 138936285Sbrian return 0; 139036285Sbrian } 139136285Sbrian 139236285Sbrian bundle_DatalinkLinkin(bundle, datalink_Clone(dl, name)); 139336285Sbrian return 1; 139436285Sbrian} 139536285Sbrian 139636285Sbrianvoid 139736285Sbrianbundle_DatalinkRemove(struct bundle *bundle, struct datalink *dl) 139836285Sbrian{ 139936285Sbrian dl = bundle_DatalinkLinkout(bundle, dl); 140036285Sbrian if (dl) 140136285Sbrian datalink_Destroy(dl); 140236285Sbrian} 140336285Sbrian 140436285Sbrianvoid 140536285Sbrianbundle_SetLabel(struct bundle *bundle, const char *label) 140636285Sbrian{ 140736285Sbrian if (label) 140836285Sbrian strncpy(bundle->cfg.label, label, sizeof bundle->cfg.label - 1); 140936285Sbrian else 141036285Sbrian *bundle->cfg.label = '\0'; 141136285Sbrian} 141236285Sbrian 141336285Sbrianconst char * 141436285Sbrianbundle_GetLabel(struct bundle *bundle) 141536285Sbrian{ 141636285Sbrian return *bundle->cfg.label ? bundle->cfg.label : NULL; 141736285Sbrian} 141836285Sbrian 141936285Sbrianvoid 142036285Sbrianbundle_ReceiveDatalink(struct bundle *bundle, int s, struct sockaddr_un *sun) 142136285Sbrian{ 142236285Sbrian char cmsgbuf[sizeof(struct cmsghdr) + sizeof(int)]; 142336285Sbrian struct cmsghdr *cmsg = (struct cmsghdr *)cmsgbuf; 142436285Sbrian struct msghdr msg; 142536285Sbrian struct iovec iov[SCATTER_SEGMENTS]; 142636285Sbrian struct datalink *dl; 142736285Sbrian int niov, link_fd, expect, f; 142836450Sbrian pid_t pid; 142936285Sbrian 143036285Sbrian log_Printf(LogPHASE, "Receiving datalink\n"); 143136285Sbrian 143236285Sbrian /* Create our scatter/gather array */ 143336285Sbrian niov = 1; 143436285Sbrian iov[0].iov_len = strlen(Version) + 1; 143536285Sbrian iov[0].iov_base = (char *)malloc(iov[0].iov_len); 143636450Sbrian if (datalink2iov(NULL, iov, &niov, sizeof iov / sizeof *iov, 0) == -1) { 143736345Sbrian close(s); 143836285Sbrian return; 143936345Sbrian } 144036285Sbrian 144136450Sbrian pid = getpid(); 144236450Sbrian write(s, &pid, sizeof pid); 144336450Sbrian 144436285Sbrian for (f = expect = 0; f < niov; f++) 144536285Sbrian expect += iov[f].iov_len; 144636285Sbrian 144736285Sbrian /* Set up our message */ 144836285Sbrian cmsg->cmsg_len = sizeof cmsgbuf; 144936285Sbrian cmsg->cmsg_level = SOL_SOCKET; 145036345Sbrian cmsg->cmsg_type = 0; 145136285Sbrian 145236285Sbrian memset(&msg, '\0', sizeof msg); 145336285Sbrian msg.msg_name = (caddr_t)sun; 145436285Sbrian msg.msg_namelen = sizeof *sun; 145536285Sbrian msg.msg_iov = iov; 145636285Sbrian msg.msg_iovlen = niov; 145736285Sbrian msg.msg_control = cmsgbuf; 145836285Sbrian msg.msg_controllen = sizeof cmsgbuf; 145936285Sbrian 146036285Sbrian log_Printf(LogDEBUG, "Expecting %d scatter/gather bytes\n", expect); 146136285Sbrian f = expect + 100; 146236285Sbrian setsockopt(s, SOL_SOCKET, SO_RCVBUF, &f, sizeof f); 146336285Sbrian if ((f = recvmsg(s, &msg, MSG_WAITALL)) != expect) { 146436285Sbrian if (f == -1) 146536285Sbrian log_Printf(LogERROR, "Failed recvmsg: %s\n", strerror(errno)); 146636285Sbrian else 146736285Sbrian log_Printf(LogERROR, "Failed recvmsg: Got %d, not %d\n", f, expect); 146836285Sbrian while (niov--) 146936285Sbrian free(iov[niov].iov_base); 147036345Sbrian close(s); 147136285Sbrian return; 147236285Sbrian } 147336285Sbrian 147436345Sbrian write(s, "!", 1); /* ACK */ 147537054Sbrian close(s); 147636285Sbrian 147737054Sbrian if (cmsg->cmsg_type != SCM_RIGHTS) { 147837054Sbrian log_Printf(LogERROR, "Recvmsg: no descriptor received !\n"); 147937054Sbrian while (niov--) 148037054Sbrian free(iov[niov].iov_base); 148137054Sbrian return; 148236345Sbrian } 148336285Sbrian 148437054Sbrian /* We've successfully received an open file descriptor through our socket */ 148537054Sbrian log_Printf(LogDEBUG, "Receiving device descriptor\n"); 148637054Sbrian link_fd = *(int *)CMSG_DATA(cmsg); 148737054Sbrian 148836285Sbrian if (strncmp(Version, iov[0].iov_base, iov[0].iov_len)) { 148936285Sbrian log_Printf(LogWARN, "Cannot receive datalink, incorrect version" 149036285Sbrian " (\"%.*s\", not \"%s\")\n", (int)iov[0].iov_len, 149137188Sbrian (char *)iov[0].iov_base, Version); 149236285Sbrian close(link_fd); 149336285Sbrian while (niov--) 149436285Sbrian free(iov[niov].iov_base); 149536285Sbrian return; 149636285Sbrian } 149736285Sbrian 149836285Sbrian niov = 1; 149936285Sbrian dl = iov2datalink(bundle, iov, &niov, sizeof iov / sizeof *iov, link_fd); 150036285Sbrian if (dl) { 150136285Sbrian bundle_DatalinkLinkin(bundle, dl); 150236285Sbrian datalink_AuthOk(dl); 150336285Sbrian } else 150436285Sbrian close(link_fd); 150536285Sbrian 150636285Sbrian free(iov[0].iov_base); 150736285Sbrian} 150836285Sbrian 150936285Sbrianvoid 151036285Sbrianbundle_SendDatalink(struct datalink *dl, int s, struct sockaddr_un *sun) 151136285Sbrian{ 151236285Sbrian char cmsgbuf[sizeof(struct cmsghdr) + sizeof(int)], ack; 151336285Sbrian struct cmsghdr *cmsg = (struct cmsghdr *)cmsgbuf; 151436285Sbrian struct msghdr msg; 151536285Sbrian struct iovec iov[SCATTER_SEGMENTS]; 151636452Sbrian int niov, link_fd, f, expect, newsid; 151736450Sbrian pid_t newpid; 151836285Sbrian 151936285Sbrian log_Printf(LogPHASE, "Transmitting datalink %s\n", dl->name); 152036285Sbrian 152136314Sbrian bundle_LinkClosed(dl->bundle, dl); 152236285Sbrian bundle_DatalinkLinkout(dl->bundle, dl); 152336285Sbrian 152436285Sbrian /* Build our scatter/gather array */ 152536285Sbrian iov[0].iov_len = strlen(Version) + 1; 152636285Sbrian iov[0].iov_base = strdup(Version); 152736285Sbrian niov = 1; 152836285Sbrian 152936450Sbrian read(s, &newpid, sizeof newpid); 153036450Sbrian link_fd = datalink2iov(dl, iov, &niov, sizeof iov / sizeof *iov, newpid); 153136285Sbrian 153236285Sbrian if (link_fd != -1) { 153336345Sbrian memset(&msg, '\0', sizeof msg); 153436285Sbrian 153536285Sbrian msg.msg_name = (caddr_t)sun; 153636285Sbrian msg.msg_namelen = sizeof *sun; 153736285Sbrian msg.msg_iov = iov; 153836285Sbrian msg.msg_iovlen = niov; 153936285Sbrian 154036452Sbrian cmsg->cmsg_len = sizeof cmsgbuf; 154136452Sbrian cmsg->cmsg_level = SOL_SOCKET; 154236452Sbrian cmsg->cmsg_type = SCM_RIGHTS; 154336452Sbrian *(int *)CMSG_DATA(cmsg) = link_fd; 154436452Sbrian msg.msg_control = cmsgbuf; 154536452Sbrian msg.msg_controllen = sizeof cmsgbuf; 154636345Sbrian 154736285Sbrian for (f = expect = 0; f < niov; f++) 154836285Sbrian expect += iov[f].iov_len; 154936285Sbrian 155036285Sbrian log_Printf(LogDEBUG, "Sending %d bytes in scatter/gather array\n", expect); 155136285Sbrian 155236285Sbrian f = expect + SOCKET_OVERHEAD; 155336285Sbrian setsockopt(s, SOL_SOCKET, SO_SNDBUF, &f, sizeof f); 155436285Sbrian if (sendmsg(s, &msg, 0) == -1) 155536285Sbrian log_Printf(LogERROR, "Failed sendmsg: %s\n", strerror(errno)); 155636285Sbrian /* We must get the ACK before closing the descriptor ! */ 155736285Sbrian read(s, &ack, 1); 155836345Sbrian 155936452Sbrian newsid = tcgetpgrp(link_fd) == getpgrp(); 156036285Sbrian close(link_fd); 156136452Sbrian if (newsid) 156236452Sbrian bundle_setsid(dl->bundle, 1); 156336285Sbrian } 156436450Sbrian close(s); 156536285Sbrian 156636285Sbrian while (niov--) 156736285Sbrian free(iov[niov].iov_base); 156836285Sbrian} 156936285Sbrian 157036285Sbrianint 157136285Sbrianbundle_RenameDatalink(struct bundle *bundle, struct datalink *ndl, 157236285Sbrian const char *name) 157336285Sbrian{ 157436285Sbrian struct datalink *dl; 157536285Sbrian 157636285Sbrian if (!strcasecmp(ndl->name, name)) 157736285Sbrian return 1; 157836285Sbrian 157936285Sbrian for (dl = bundle->links; dl; dl = dl->next) 158036285Sbrian if (!strcasecmp(dl->name, name)) 158136285Sbrian return 0; 158236285Sbrian 158336285Sbrian datalink_Rename(ndl, name); 158436285Sbrian return 1; 158536285Sbrian} 158636285Sbrian 158736285Sbrianint 158836285Sbrianbundle_SetMode(struct bundle *bundle, struct datalink *dl, int mode) 158936285Sbrian{ 159036285Sbrian int omode; 159136285Sbrian 159236285Sbrian omode = dl->physical->type; 159336285Sbrian if (omode == mode) 159436285Sbrian return 1; 159536285Sbrian 159636928Sbrian if (mode == PHYS_AUTO && !(bundle->phys_type.all & PHYS_AUTO)) 159736928Sbrian /* First auto link */ 159836285Sbrian if (bundle->ncp.ipcp.peer_ip.s_addr == INADDR_ANY) { 159936928Sbrian log_Printf(LogWARN, "You must `set ifaddr' or `open' before" 160036928Sbrian " changing mode to %s\n", mode2Nam(mode)); 160136285Sbrian return 0; 160236285Sbrian } 160336285Sbrian 160436285Sbrian if (!datalink_SetMode(dl, mode)) 160536285Sbrian return 0; 160636285Sbrian 160736928Sbrian if (mode == PHYS_AUTO && !(bundle->phys_type.all & PHYS_AUTO) && 160836928Sbrian bundle->phase != PHASE_NETWORK) 160936928Sbrian /* First auto link, we need an interface */ 161036285Sbrian ipcp_InterfaceUp(&bundle->ncp.ipcp); 161136285Sbrian 161236285Sbrian /* Regenerate phys_type and adjust autoload & idle timers */ 161336285Sbrian bundle_LinksRemoved(bundle); 161436285Sbrian 161536285Sbrian return 1; 161636285Sbrian} 161736452Sbrian 161836452Sbrianvoid 161936452Sbrianbundle_setsid(struct bundle *bundle, int holdsession) 162036452Sbrian{ 162136452Sbrian /* 162236452Sbrian * Lose the current session. This means getting rid of our pid 162336452Sbrian * too so that the tty device will really go away, and any getty 162436452Sbrian * etc will be allowed to restart. 162536452Sbrian */ 162636452Sbrian pid_t pid, orig; 162736452Sbrian int fds[2]; 162836452Sbrian char done; 162936452Sbrian struct datalink *dl; 163036452Sbrian 163136452Sbrian orig = getpid(); 163236452Sbrian if (pipe(fds) == -1) { 163336452Sbrian log_Printf(LogERROR, "pipe: %s\n", strerror(errno)); 163436452Sbrian return; 163536452Sbrian } 163636452Sbrian switch ((pid = fork())) { 163736452Sbrian case -1: 163836452Sbrian log_Printf(LogERROR, "fork: %s\n", strerror(errno)); 163936452Sbrian close(fds[0]); 164036452Sbrian close(fds[1]); 164136452Sbrian return; 164236452Sbrian case 0: 164336452Sbrian close(fds[0]); 164436452Sbrian read(fds[1], &done, 1); /* uu_locks are mine ! */ 164536452Sbrian close(fds[1]); 164636452Sbrian if (pipe(fds) == -1) { 164736452Sbrian log_Printf(LogERROR, "pipe(2): %s\n", strerror(errno)); 164836452Sbrian return; 164936452Sbrian } 165036452Sbrian switch ((pid = fork())) { 165136452Sbrian case -1: 165237019Sbrian log_Printf(LogERROR, "fork(2): %s\n", strerror(errno)); 165336452Sbrian close(fds[0]); 165436452Sbrian close(fds[1]); 165536452Sbrian return; 165636452Sbrian case 0: 165736452Sbrian close(fds[0]); 165836452Sbrian bundle_LockTun(bundle); /* update pid */ 165936452Sbrian read(fds[1], &done, 1); /* uu_locks are mine ! */ 166036452Sbrian close(fds[1]); 166136452Sbrian setsid(); 166236452Sbrian log_Printf(LogPHASE, "%d -> %d: %s session control\n", 166336452Sbrian (int)orig, (int)getpid(), 166436452Sbrian holdsession ? "Passed" : "Dropped"); 166537061Sbrian timer_InitService(); 166636452Sbrian break; 166736452Sbrian default: 166836452Sbrian close(fds[1]); 166936452Sbrian /* Give away all our modem locks (to the final process) */ 167036452Sbrian for (dl = bundle->links; dl; dl = dl->next) 167136452Sbrian if (dl->state != DATALINK_CLOSED) 167236452Sbrian modem_ChangedPid(dl->physical, pid); 167336452Sbrian write(fds[0], "!", 1); /* done */ 167436452Sbrian close(fds[0]); 167536452Sbrian exit(0); 167636452Sbrian break; 167736452Sbrian } 167836452Sbrian break; 167936452Sbrian default: 168036452Sbrian close(fds[1]); 168136452Sbrian /* Give away all our modem locks (to the intermediate process) */ 168236452Sbrian for (dl = bundle->links; dl; dl = dl->next) 168336452Sbrian if (dl->state != DATALINK_CLOSED) 168436452Sbrian modem_ChangedPid(dl->physical, pid); 168536452Sbrian write(fds[0], "!", 1); /* done */ 168636452Sbrian close(fds[0]); 168736452Sbrian if (holdsession) { 168836452Sbrian int fd, status; 168936452Sbrian 169036452Sbrian timer_TermService(); 169136452Sbrian signal(SIGPIPE, SIG_DFL); 169236452Sbrian signal(SIGALRM, SIG_DFL); 169336452Sbrian signal(SIGHUP, SIG_DFL); 169436452Sbrian signal(SIGTERM, SIG_DFL); 169536452Sbrian signal(SIGINT, SIG_DFL); 169636452Sbrian signal(SIGQUIT, SIG_DFL); 169736452Sbrian for (fd = getdtablesize(); fd >= 0; fd--) 169836452Sbrian close(fd); 169936452Sbrian setuid(geteuid()); 170036452Sbrian /* 170136452Sbrian * Reap the intermediate process. As we're not exiting but the 170236452Sbrian * intermediate is, we don't want it to become defunct. 170336452Sbrian */ 170436452Sbrian waitpid(pid, &status, 0); 170536467Sbrian /* Tweak our process arguments.... */ 170636467Sbrian bundle->argv[0] = "session owner"; 170736467Sbrian bundle->argv[1] = NULL; 170836452Sbrian /* 170936452Sbrian * Hang around for a HUP. This should happen as soon as the 171036452Sbrian * ppp that we passed our ctty descriptor to closes it. 171136452Sbrian * NOTE: If this process dies, the passed descriptor becomes 171236452Sbrian * invalid and will give a select() error by setting one 171336452Sbrian * of the error fds, aborting the other ppp. We don't 171436452Sbrian * want that to happen ! 171536452Sbrian */ 171636452Sbrian pause(); 171736452Sbrian } 171836452Sbrian exit(0); 171936452Sbrian break; 172036452Sbrian } 172136452Sbrian} 172240622Sbrian 172340622Sbrianint 172440622Sbrianbundle_HighestState(struct bundle *bundle) 172540622Sbrian{ 172640622Sbrian struct datalink *dl; 172740622Sbrian int result = DATALINK_CLOSED; 172840622Sbrian 172940622Sbrian for (dl = bundle->links; dl; dl = dl->next) 173040622Sbrian if (result < dl->state) 173140622Sbrian result = dl->state; 173240622Sbrian 173340622Sbrian return result; 173440622Sbrian} 1735