FreeBSD-5.3/usr.sbin/ppp/datalink.c
/*-
* Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/usr.sbin/ppp/datalink.c,v 1.75 2003/03/26 02:03:08 brian Exp $
*/
#include <sys/param.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/uio.h>
#include <termios.h>
#include "layer.h"
#include "mbuf.h"
#include "log.h"
#include "defs.h"
#include "timer.h"
#include "fsm.h"
#include "descriptor.h"
#include "lqr.h"
#include "hdlc.h"
#include "lcp.h"
#include "async.h"
#include "throughput.h"
#include "ccp.h"
#include "link.h"
#include "physical.h"
#include "iplist.h"
#include "slcompress.h"
#include "ncpaddr.h"
#include "ipcp.h"
#include "filter.h"
#include "mp.h"
#ifndef NORADIUS
#include "radius.h"
#endif
#include "ipv6cp.h"
#include "ncp.h"
#include "bundle.h"
#include "chat.h"
#include "auth.h"
#include "prompt.h"
#include "proto.h"
#include "pap.h"
#include "chap.h"
#include "command.h"
#include "cbcp.h"
#include "datalink.h"
static void datalink_LoginDone(struct datalink *);
static void datalink_NewState(struct datalink *, int);
static void
datalink_OpenTimeout(void *v)
{
struct datalink *dl = (struct datalink *)v;
timer_Stop(&dl->dial.timer);
if (dl->state == DATALINK_OPENING)
log_Printf(LogCHAT, "%s: Redial timer expired.\n", dl->name);
}
static int
datalink_StartDialTimer(struct datalink *dl, int Timeout)
{
int result = Timeout;
timer_Stop(&dl->dial.timer);
if (Timeout < 0)
result = (random() % DIAL_TIMEOUT) + 1;
dl->dial.timer.load = result ? result * SECTICKS : 1;
dl->dial.timer.func = datalink_OpenTimeout;
dl->dial.timer.name = "dial";
dl->dial.timer.arg = dl;
timer_Start(&dl->dial.timer);
if (dl->state == DATALINK_OPENING)
log_Printf(LogPHASE, "%s: Enter pause (%d) for redialing.\n",
dl->name, result);
return result;
}
static void
datalink_HangupDone(struct datalink *dl)
{
if (dl->physical->type == PHYS_DEDICATED && !dl->bundle->CleaningUp &&
dl->physical->fd != -1) {
/* Don't close our device if the link is dedicated */
datalink_LoginDone(dl);
return;
}
chat_Finish(&dl->chat);
physical_Close(dl->physical);
dl->phone.chosen = "N/A";
if (dl->cbcp.required) {
log_Printf(LogPHASE, "Call peer back on %s\n", dl->cbcp.fsm.phone);
dl->cfg.callback.opmask = 0;
strncpy(dl->cfg.phone.list, dl->cbcp.fsm.phone,
sizeof dl->cfg.phone.list - 1);
dl->cfg.phone.list[sizeof dl->cfg.phone.list - 1] = '\0';
dl->phone.alt = dl->phone.next = NULL;
dl->reconnect_tries = dl->cfg.reconnect.max;
dl->dial.tries = dl->cfg.dial.max;
dl->dial.incs = 0;
dl->script.run = 1;
dl->script.packetmode = 1;
if (!physical_SetMode(dl->physical, PHYS_BACKGROUND))
log_Printf(LogERROR, "Oops - can't change mode to BACKGROUND (gulp) !\n");
bundle_LinksRemoved(dl->bundle);
/* if dial.timeout is < 0 (random), we don't override fsm.delay */
if (dl->cbcp.fsm.delay < dl->cfg.dial.timeout)
dl->cbcp.fsm.delay = dl->cfg.dial.timeout;
datalink_StartDialTimer(dl, dl->cbcp.fsm.delay);
cbcp_Down(&dl->cbcp);
datalink_NewState(dl, DATALINK_OPENING);
if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
bundle_Phase(dl->bundle) == PHASE_TERMINATE)
bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
} else if (dl->bundle->CleaningUp ||
(dl->physical->type == PHYS_DIRECT) ||
((!dl->dial.tries || (dl->dial.tries < 0 && !dl->reconnect_tries)) &&
!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)))) {
datalink_NewState(dl, DATALINK_CLOSED);
dl->dial.tries = -1;
dl->dial.incs = 0;
dl->reconnect_tries = 0;
bundle_LinkClosed(dl->bundle, dl);
if (!dl->bundle->CleaningUp &&
!(dl->physical->type & (PHYS_DIRECT|PHYS_BACKGROUND|PHYS_FOREGROUND)))
datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
} else {
datalink_NewState(dl, DATALINK_OPENING);
if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
bundle_Phase(dl->bundle) == PHASE_TERMINATE)
bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
if (dl->dial.tries < 0) {
datalink_StartDialTimer(dl, dl->cfg.reconnect.timeout);
dl->dial.tries = dl->cfg.dial.max;
dl->dial.incs = 0;
dl->reconnect_tries--;
log_Printf(LogCHAT, "%s: Reconnect try %d of %d\n",
dl->name, dl->cfg.reconnect.max - dl->reconnect_tries,
dl->cfg.reconnect.max);
bundle_Notify(dl->bundle, EX_RECONNECT);
} else {
if (dl->phone.next == NULL)
datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
else
datalink_StartDialTimer(dl, dl->cfg.dial.next_timeout);
bundle_Notify(dl->bundle, EX_REDIAL);
}
}
}
const char *
datalink_ChoosePhoneNumber(struct datalink *dl)
{
char *phone;
if (dl->phone.alt == NULL) {
if (dl->phone.next == NULL) {
strncpy(dl->phone.list, dl->cfg.phone.list, sizeof dl->phone.list - 1);
dl->phone.list[sizeof dl->phone.list - 1] = '\0';
if (*dl->phone.list == '\0')
return "";
dl->phone.next = dl->phone.list;
}
dl->phone.alt = strsep(&dl->phone.next, ":");
}
phone = strsep(&dl->phone.alt, "|");
dl->phone.chosen = *phone ? phone : "[NONE]";
if (*phone)
log_Printf(LogCHAT, "Phone: %s\n", phone);
return phone;
}
static void
datalink_LoginDone(struct datalink *dl)
{
chat_Finish(&dl->chat);
if (!dl->script.packetmode) {
dl->dial.tries = -1;
dl->dial.incs = 0;
datalink_NewState(dl, DATALINK_READY);
} else if (!physical_Raw(dl->physical)) {
dl->dial.tries = 0;
log_Printf(LogWARN, "datalink_LoginDone: Not connected.\n");
if (dl->script.run) {
datalink_NewState(dl, DATALINK_LOGOUT);
if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
log_Printf(LogWARN, "Invalid logout script\n");
} else {
physical_StopDeviceTimer(dl->physical);
if (dl->physical->type == PHYS_DEDICATED)
/* force a redial timeout */
physical_Close(dl->physical);
datalink_HangupDone(dl);
}
} else {
dl->dial.tries = -1;
dl->dial.incs = 0;
hdlc_Init(&dl->physical->hdlc, &dl->physical->link.lcp);
async_Setup(&dl->physical->async);
lcp_Setup(&dl->physical->link.lcp, dl->state == DATALINK_READY ?
0 : dl->physical->link.lcp.cfg.openmode);
ccp_Setup(&dl->physical->link.ccp);
datalink_NewState(dl, DATALINK_LCP);
fsm_Up(&dl->physical->link.lcp.fsm);
fsm_Open(&dl->physical->link.lcp.fsm);
}
}
static int
datalink_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e,
int *n)
{
struct datalink *dl = descriptor2datalink(d);
int result;
result = 0;
switch (dl->state) {
case DATALINK_CLOSED:
if ((dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED|PHYS_BACKGROUND|
PHYS_FOREGROUND|PHYS_DDIAL)) &&
!dl->bundle->CleaningUp)
/*
* Our first time in - DEDICATED & DDIAL never come down, and
* DIRECT, FOREGROUND & BACKGROUND get deleted when they enter
* DATALINK_CLOSED. Go to DATALINK_OPENING via datalink_Up()
* and fall through.
*/
datalink_Up(dl, 1, 1);
else
break;
/* FALLTHROUGH */
case DATALINK_OPENING:
if (dl->dial.timer.state != TIMER_RUNNING) {
if (--dl->dial.tries < 0)
dl->dial.tries = 0;
if (physical_Open(dl->physical, dl->bundle) >= 0) {
log_WritePrompts(dl, "%s: Entering terminal mode on %s\r\n"
"Type `~?' for help\r\n", dl->name,
dl->physical->name.full);
if (dl->script.run) {
datalink_NewState(dl, DATALINK_DIAL);
if (!chat_Setup(&dl->chat, dl->cfg.script.dial,
*dl->cfg.script.dial ?
datalink_ChoosePhoneNumber(dl) : ""))
log_Printf(LogWARN, "Invalid dial script\n");
if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
dl->cfg.dial.max)
log_Printf(LogCHAT, "%s: Dial attempt %u of %d\n",
dl->name, dl->cfg.dial.max - dl->dial.tries,
dl->cfg.dial.max);
} else
datalink_NewState(dl, DATALINK_CARRIER);
return datalink_UpdateSet(d, r, w, e, n);
} else {
if (!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
dl->cfg.dial.max)
log_Printf(LogCHAT, "Failed to open device (attempt %u of %d)\n",
dl->cfg.dial.max - dl->dial.tries, dl->cfg.dial.max);
else
log_Printf(LogCHAT, "Failed to open device\n");
if (dl->bundle->CleaningUp ||
(!(dl->physical->type & (PHYS_DDIAL|PHYS_DEDICATED)) &&
dl->cfg.dial.max && dl->dial.tries == 0)) {
datalink_NewState(dl, DATALINK_CLOSED);
dl->reconnect_tries = 0;
dl->dial.tries = -1;
log_WritePrompts(dl, "Failed to open %s\n",
dl->physical->name.full);
bundle_LinkClosed(dl->bundle, dl);
}
if (!dl->bundle->CleaningUp) {
int timeout;
timeout = datalink_StartDialTimer(dl, datalink_GetDialTimeout(dl));
bundle_Notify(dl->bundle, EX_REDIAL);
log_WritePrompts(dl, "Failed to open %s, pause %d seconds\n",
dl->physical->name.full, timeout);
}
}
}
break;
case DATALINK_CARRIER:
/* Wait for carrier on the device */
switch (physical_AwaitCarrier(dl->physical)) {
case CARRIER_PENDING:
log_Printf(LogDEBUG, "Waiting for carrier\n");
return 0; /* A device timer is running to wake us up again */
case CARRIER_OK:
if (dl->script.run) {
datalink_NewState(dl, DATALINK_LOGIN);
if (!chat_Setup(&dl->chat, dl->cfg.script.login, NULL))
log_Printf(LogWARN, "Invalid login script\n");
} else
datalink_LoginDone(dl);
return datalink_UpdateSet(d, r, w, e, n);
case CARRIER_LOST:
physical_Offline(dl->physical); /* Is this required ? */
if (dl->script.run) {
datalink_NewState(dl, DATALINK_HANGUP);
if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
log_Printf(LogWARN, "Invalid hangup script\n");
return datalink_UpdateSet(d, r, w, e, n);
} else {
datalink_HangupDone(dl);
return 0; /* Maybe bundle_CleanDatalinks() has something to do */
}
}
case DATALINK_HANGUP:
case DATALINK_DIAL:
case DATALINK_LOGOUT:
case DATALINK_LOGIN:
result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n);
switch (dl->chat.state) {
case CHAT_DONE:
/* script succeeded */
switch(dl->state) {
case DATALINK_HANGUP:
datalink_HangupDone(dl);
break;
case DATALINK_DIAL:
datalink_NewState(dl, DATALINK_CARRIER);
return datalink_UpdateSet(d, r, w, e, n);
case DATALINK_LOGOUT:
datalink_NewState(dl, DATALINK_HANGUP);
physical_Offline(dl->physical);
if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
log_Printf(LogWARN, "Invalid hangup script\n");
return datalink_UpdateSet(d, r, w, e, n);
case DATALINK_LOGIN:
dl->phone.alt = NULL;
datalink_LoginDone(dl);
return datalink_UpdateSet(d, r, w, e, n);
}
break;
case CHAT_FAILED:
/* Going down - script failed */
log_Printf(LogWARN, "Chat script failed\n");
switch(dl->state) {
case DATALINK_HANGUP:
datalink_HangupDone(dl);
break;
case DATALINK_DIAL:
case DATALINK_LOGOUT:
case DATALINK_LOGIN:
datalink_NewState(dl, DATALINK_HANGUP);
physical_Offline(dl->physical);
if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
log_Printf(LogWARN, "Invalid hangup script\n");
return datalink_UpdateSet(d, r, w, e, n);
}
break;
}
break;
case DATALINK_READY:
case DATALINK_LCP:
case DATALINK_AUTH:
case DATALINK_CBCP:
case DATALINK_OPEN:
result = descriptor_UpdateSet(&dl->chap.desc, r, w, e, n) +
descriptor_UpdateSet(&dl->physical->desc, r, w, e, n);
break;
}
return result;
}
int
datalink_RemoveFromSet(struct datalink *dl, fd_set *r, fd_set *w, fd_set *e)
{
return physical_RemoveFromSet(dl->physical, r, w, e);
}
static int
datalink_IsSet(struct fdescriptor *d, const fd_set *fdset)
{
struct datalink *dl = descriptor2datalink(d);
switch (dl->state) {
case DATALINK_CLOSED:
case DATALINK_OPENING:
break;
case DATALINK_HANGUP:
case DATALINK_DIAL:
case DATALINK_LOGOUT:
case DATALINK_LOGIN:
return descriptor_IsSet(&dl->chat.desc, fdset);
case DATALINK_READY:
case DATALINK_LCP:
case DATALINK_AUTH:
case DATALINK_CBCP:
case DATALINK_OPEN:
return descriptor_IsSet(&dl->chap.desc, fdset) ? 1 :
descriptor_IsSet(&dl->physical->desc, fdset);
}
return 0;
}
static void
datalink_Read(struct fdescriptor *d, struct bundle *bundle, const fd_set *fdset)
{
struct datalink *dl = descriptor2datalink(d);
switch (dl->state) {
case DATALINK_CLOSED:
case DATALINK_OPENING:
break;
case DATALINK_HANGUP:
case DATALINK_DIAL:
case DATALINK_LOGOUT:
case DATALINK_LOGIN:
descriptor_Read(&dl->chat.desc, bundle, fdset);
break;
case DATALINK_READY:
case DATALINK_LCP:
case DATALINK_AUTH:
case DATALINK_CBCP:
case DATALINK_OPEN:
if (descriptor_IsSet(&dl->chap.desc, fdset))
descriptor_Read(&dl->chap.desc, bundle, fdset);
if (descriptor_IsSet(&dl->physical->desc, fdset))
descriptor_Read(&dl->physical->desc, bundle, fdset);
break;
}
}
static int
datalink_Write(struct fdescriptor *d, struct bundle *bundle,
const fd_set *fdset)
{
struct datalink *dl = descriptor2datalink(d);
int result = 0;
switch (dl->state) {
case DATALINK_CLOSED:
case DATALINK_OPENING:
break;
case DATALINK_HANGUP:
case DATALINK_DIAL:
case DATALINK_LOGOUT:
case DATALINK_LOGIN:
if ((result = descriptor_Write(&dl->chat.desc, bundle, fdset)) == -1) {
datalink_ComeDown(dl, CLOSE_NORMAL);
result = 0;
}
break;
case DATALINK_READY:
case DATALINK_LCP:
case DATALINK_AUTH:
case DATALINK_CBCP:
case DATALINK_OPEN:
if (descriptor_IsSet(&dl->chap.desc, fdset))
switch (descriptor_Write(&dl->chap.desc, bundle, fdset)) {
case -1:
datalink_ComeDown(dl, CLOSE_NORMAL);
break;
case 1:
result++;
}
if (descriptor_IsSet(&dl->physical->desc, fdset))
switch (descriptor_Write(&dl->physical->desc, bundle, fdset)) {
case -1:
datalink_ComeDown(dl, CLOSE_NORMAL);
break;
case 1:
result++;
}
break;
}
return result;
}
void
datalink_ComeDown(struct datalink *dl, int how)
{
int stayonline;
if (how == CLOSE_LCP)
datalink_DontHangup(dl);
else if (how == CLOSE_STAYDOWN)
datalink_StayDown(dl);
stayonline = dl->stayonline;
dl->stayonline = 0;
if (dl->state >= DATALINK_READY && stayonline) {
physical_StopDeviceTimer(dl->physical);
datalink_NewState(dl, DATALINK_READY);
} else if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) {
physical_Offline(dl->physical);
if (dl->script.run && dl->state != DATALINK_OPENING) {
if (dl->state == DATALINK_LOGOUT) {
datalink_NewState(dl, DATALINK_HANGUP);
if (!chat_Setup(&dl->chat, dl->cfg.script.hangup, NULL))
log_Printf(LogWARN, "Invalid hangup script\n");
} else {
datalink_NewState(dl, DATALINK_LOGOUT);
if (!chat_Setup(&dl->chat, dl->cfg.script.logout, NULL))
log_Printf(LogWARN, "Invalid logout script\n");
}
} else
datalink_HangupDone(dl);
}
}
static void
datalink_LayerStart(void *v, struct fsm *fp)
{
/* The given FSM is about to start up ! */
struct datalink *dl = (struct datalink *)v;
if (fp->proto == PROTO_LCP)
(*dl->parent->LayerStart)(dl->parent->object, fp);
}
static void
datalink_LayerUp(void *v, struct fsm *fp)
{
/* The given fsm is now up */
struct datalink *dl = (struct datalink *)v;
struct lcp *lcp = &dl->physical->link.lcp;
if (fp->proto == PROTO_LCP) {
datalink_GotAuthname(dl, "");
lcp->auth_ineed = lcp->want_auth;
lcp->auth_iwait = lcp->his_auth;
if (lcp->his_auth || lcp->want_auth) {
if (bundle_Phase(dl->bundle) != PHASE_NETWORK)
bundle_NewPhase(dl->bundle, PHASE_AUTHENTICATE);
log_Printf(LogPHASE, "%s: his = %s, mine = %s\n", dl->name,
Auth2Nam(lcp->his_auth, lcp->his_authtype),
Auth2Nam(lcp->want_auth, lcp->want_authtype));
if (lcp->his_auth == PROTO_PAP)
auth_StartReq(&dl->pap);
if (lcp->want_auth == PROTO_CHAP)
auth_StartReq(&dl->chap.auth);
} else
datalink_AuthOk(dl);
} else if (fp->proto == PROTO_CCP)
(*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.ccp.fsm);
}
static void
datalink_AuthReInit(struct datalink *dl)
{
auth_StopTimer(&dl->pap);
auth_StopTimer(&dl->chap.auth);
chap_ReInit(&dl->chap);
}
void
datalink_GotAuthname(struct datalink *dl, const char *name)
{
strncpy(dl->peer.authname, name, sizeof dl->peer.authname - 1);
dl->peer.authname[sizeof dl->peer.authname - 1] = '\0';
}
void
datalink_NCPUp(struct datalink *dl)
{
int ccpok = ccp_SetOpenMode(&dl->physical->link.ccp);
if (dl->physical->link.lcp.want_mrru && dl->physical->link.lcp.his_mrru) {
/* we've authenticated in multilink mode ! */
switch (mp_Up(&dl->bundle->ncp.mp, dl)) {
case MP_LINKSENT:
/* We've handed the link off to another ppp (well, we will soon) ! */
return;
case MP_UP:
/* First link in the bundle */
auth_Select(dl->bundle, dl->peer.authname);
bundle_CalculateBandwidth(dl->bundle);
/* FALLTHROUGH */
case MP_ADDED:
/* We're in multilink mode ! */
dl->physical->link.ccp.fsm.open_mode = OPEN_PASSIVE; /* override */
bundle_CalculateBandwidth(dl->bundle);
break;
case MP_FAILED:
datalink_AuthNotOk(dl);
return;
}
} else if (bundle_Phase(dl->bundle) == PHASE_NETWORK) {
log_Printf(LogPHASE, "%s: Already in NETWORK phase\n", dl->name);
datalink_NewState(dl, DATALINK_OPEN);
bundle_CalculateBandwidth(dl->bundle);
(*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
return;
} else {
dl->bundle->ncp.mp.peer = dl->peer;
ncp_SetLink(&dl->bundle->ncp, &dl->physical->link);
auth_Select(dl->bundle, dl->peer.authname);
}
if (ccpok) {
fsm_Up(&dl->physical->link.ccp.fsm);
fsm_Open(&dl->physical->link.ccp.fsm);
}
datalink_NewState(dl, DATALINK_OPEN);
bundle_NewPhase(dl->bundle, PHASE_NETWORK);
(*dl->parent->LayerUp)(dl->parent->object, &dl->physical->link.lcp.fsm);
}
void
datalink_CBCPComplete(struct datalink *dl)
{
datalink_NewState(dl, DATALINK_LCP);
datalink_AuthReInit(dl);
fsm_Close(&dl->physical->link.lcp.fsm);
}
void
datalink_CBCPFailed(struct datalink *dl)
{
cbcp_Down(&dl->cbcp);
datalink_CBCPComplete(dl);
}
void
datalink_AuthOk(struct datalink *dl)
{
if ((dl->physical->link.lcp.his_callback.opmask &
CALLBACK_BIT(CALLBACK_CBCP) ||
dl->physical->link.lcp.want_callback.opmask &
CALLBACK_BIT(CALLBACK_CBCP)) &&
!(dl->physical->link.lcp.want_callback.opmask &
CALLBACK_BIT(CALLBACK_AUTH))) {
/* We must have agreed CBCP if AUTH isn't there any more */
datalink_NewState(dl, DATALINK_CBCP);
cbcp_Up(&dl->cbcp);
} else if (dl->physical->link.lcp.want_callback.opmask) {
/* It's not CBCP */
log_Printf(LogPHASE, "%s: Shutdown and await peer callback\n", dl->name);
datalink_NewState(dl, DATALINK_LCP);
datalink_AuthReInit(dl);
fsm_Close(&dl->physical->link.lcp.fsm);
} else
switch (dl->physical->link.lcp.his_callback.opmask) {
case 0:
datalink_NCPUp(dl);
break;
case CALLBACK_BIT(CALLBACK_AUTH):
auth_SetPhoneList(dl->peer.authname, dl->cbcp.fsm.phone,
sizeof dl->cbcp.fsm.phone);
if (*dl->cbcp.fsm.phone == '\0' || !strcmp(dl->cbcp.fsm.phone, "*")) {
log_Printf(LogPHASE, "%s: %s cannot be called back\n", dl->name,
dl->peer.authname);
*dl->cbcp.fsm.phone = '\0';
} else {
char *ptr = strchr(dl->cbcp.fsm.phone, ',');
if (ptr)
*ptr = '\0'; /* Call back on the first number */
log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
dl->cbcp.fsm.phone);
dl->cbcp.required = 1;
}
dl->cbcp.fsm.delay = 0;
datalink_NewState(dl, DATALINK_LCP);
datalink_AuthReInit(dl);
fsm_Close(&dl->physical->link.lcp.fsm);
break;
case CALLBACK_BIT(CALLBACK_E164):
strncpy(dl->cbcp.fsm.phone, dl->physical->link.lcp.his_callback.msg,
sizeof dl->cbcp.fsm.phone - 1);
dl->cbcp.fsm.phone[sizeof dl->cbcp.fsm.phone - 1] = '\0';
log_Printf(LogPHASE, "%s: Calling peer back on %s\n", dl->name,
dl->cbcp.fsm.phone);
dl->cbcp.required = 1;
dl->cbcp.fsm.delay = 0;
datalink_NewState(dl, DATALINK_LCP);
datalink_AuthReInit(dl);
fsm_Close(&dl->physical->link.lcp.fsm);
break;
default:
log_Printf(LogPHASE, "%s: Oops - Should have NAK'd peer callback !\n",
dl->name);
datalink_NewState(dl, DATALINK_LCP);
datalink_AuthReInit(dl);
fsm_Close(&dl->physical->link.lcp.fsm);
break;
}
}
void
datalink_AuthNotOk(struct datalink *dl)
{
datalink_NewState(dl, DATALINK_LCP);
datalink_AuthReInit(dl);
fsm_Close(&dl->physical->link.lcp.fsm);
}
static void
datalink_LayerDown(void *v, struct fsm *fp)
{
/* The given FSM has been told to come down */
struct datalink *dl = (struct datalink *)v;
if (fp->proto == PROTO_LCP) {
switch (dl->state) {
case DATALINK_OPEN:
peerid_Init(&dl->peer);
fsm2initial(&dl->physical->link.ccp.fsm);
datalink_NewState(dl, DATALINK_LCP); /* before parent TLD */
(*dl->parent->LayerDown)(dl->parent->object, fp);
/* FALLTHROUGH (just in case) */
case DATALINK_CBCP:
if (!dl->cbcp.required)
cbcp_Down(&dl->cbcp);
/* FALLTHROUGH (just in case) */
case DATALINK_AUTH:
timer_Stop(&dl->pap.authtimer);
timer_Stop(&dl->chap.auth.authtimer);
}
datalink_NewState(dl, DATALINK_LCP);
datalink_AuthReInit(dl);
}
}
static void
datalink_LayerFinish(void *v, struct fsm *fp)
{
/* The given fsm is now down */
struct datalink *dl = (struct datalink *)v;
if (fp->proto == PROTO_LCP) {
fsm2initial(fp);
(*dl->parent->LayerFinish)(dl->parent->object, fp);
datalink_ComeDown(dl, CLOSE_NORMAL);
} else if (fp->state == ST_CLOSED && fp->open_mode == OPEN_PASSIVE)
fsm_Open(fp); /* CCP goes to ST_STOPPED */
}
struct datalink *
datalink_Create(const char *name, struct bundle *bundle, int type)
{
struct datalink *dl;
dl = (struct datalink *)malloc(sizeof(struct datalink));
if (dl == NULL)
return dl;
dl->desc.type = DATALINK_DESCRIPTOR;
dl->desc.UpdateSet = datalink_UpdateSet;
dl->desc.IsSet = datalink_IsSet;
dl->desc.Read = datalink_Read;
dl->desc.Write = datalink_Write;
dl->state = DATALINK_CLOSED;
*dl->cfg.script.dial = '\0';
*dl->cfg.script.login = '\0';
*dl->cfg.script.logout = '\0';
*dl->cfg.script.hangup = '\0';
*dl->cfg.phone.list = '\0';
*dl->phone.list = '\0';
dl->phone.next = NULL;
dl->phone.alt = NULL;
dl->phone.chosen = "N/A";
dl->stayonline = 0;
dl->script.run = 1;
dl->script.packetmode = 1;
mp_linkInit(&dl->mp);
dl->bundle = bundle;
dl->next = NULL;
memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
dl->dial.tries = 0;
dl->cfg.dial.max = 1;
dl->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
dl->cfg.dial.timeout = DIAL_TIMEOUT;
dl->cfg.dial.inc = 0;
dl->cfg.dial.maxinc = 10;
dl->reconnect_tries = 0;
dl->cfg.reconnect.max = 0;
dl->cfg.reconnect.timeout = RECONNECT_TIMEOUT;
dl->cfg.callback.opmask = 0;
dl->cfg.cbcp.delay = 0;
*dl->cfg.cbcp.phone = '\0';
dl->cfg.cbcp.fsmretry = DEF_FSMRETRY;
dl->name = strdup(name);
peerid_Init(&dl->peer);
dl->parent = &bundle->fsm;
dl->fsmp.LayerStart = datalink_LayerStart;
dl->fsmp.LayerUp = datalink_LayerUp;
dl->fsmp.LayerDown = datalink_LayerDown;
dl->fsmp.LayerFinish = datalink_LayerFinish;
dl->fsmp.object = dl;
if ((dl->physical = physical_Create(dl, type)) == NULL) {
free(dl->name);
free(dl);
return NULL;
}
pap_Init(&dl->pap, dl->physical);
chap_Init(&dl->chap, dl->physical);
cbcp_Init(&dl->cbcp, dl->physical);
memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
chat_Init(&dl->chat, dl->physical);
log_Printf(LogPHASE, "%s: Created in %s state\n",
dl->name, datalink_State(dl));
return dl;
}
struct datalink *
datalink_Clone(struct datalink *odl, const char *name)
{
struct datalink *dl;
dl = (struct datalink *)malloc(sizeof(struct datalink));
if (dl == NULL)
return dl;
dl->desc.type = DATALINK_DESCRIPTOR;
dl->desc.UpdateSet = datalink_UpdateSet;
dl->desc.IsSet = datalink_IsSet;
dl->desc.Read = datalink_Read;
dl->desc.Write = datalink_Write;
dl->state = DATALINK_CLOSED;
memcpy(&dl->cfg, &odl->cfg, sizeof dl->cfg);
mp_linkInit(&dl->mp);
*dl->phone.list = '\0';
dl->phone.next = NULL;
dl->phone.alt = NULL;
dl->phone.chosen = "N/A";
dl->bundle = odl->bundle;
dl->next = NULL;
memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
dl->dial.tries = 0;
dl->reconnect_tries = 0;
dl->name = strdup(name);
peerid_Init(&dl->peer);
dl->parent = odl->parent;
memcpy(&dl->fsmp, &odl->fsmp, sizeof dl->fsmp);
dl->fsmp.object = dl;
if ((dl->physical = physical_Create(dl, PHYS_INTERACTIVE)) == NULL) {
free(dl->name);
free(dl);
return NULL;
}
pap_Init(&dl->pap, dl->physical);
dl->pap.cfg = odl->pap.cfg;
chap_Init(&dl->chap, dl->physical);
dl->chap.auth.cfg = odl->chap.auth.cfg;
memcpy(&dl->physical->cfg, &odl->physical->cfg, sizeof dl->physical->cfg);
memcpy(&dl->physical->link.lcp.cfg, &odl->physical->link.lcp.cfg,
sizeof dl->physical->link.lcp.cfg);
memcpy(&dl->physical->link.ccp.cfg, &odl->physical->link.ccp.cfg,
sizeof dl->physical->link.ccp.cfg);
memcpy(&dl->physical->async.cfg, &odl->physical->async.cfg,
sizeof dl->physical->async.cfg);
cbcp_Init(&dl->cbcp, dl->physical);
memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
chat_Init(&dl->chat, dl->physical);
log_Printf(LogPHASE, "%s: Cloned in %s state\n",
dl->name, datalink_State(dl));
return dl;
}
struct datalink *
datalink_Destroy(struct datalink *dl)
{
struct datalink *result;
if (dl->state != DATALINK_CLOSED) {
log_Printf(LogERROR, "Oops, destroying a datalink in state %s\n",
datalink_State(dl));
switch (dl->state) {
case DATALINK_HANGUP:
case DATALINK_DIAL:
case DATALINK_LOGIN:
chat_Finish(&dl->chat); /* Gotta blat the timers ! */
break;
}
}
chat_Destroy(&dl->chat);
timer_Stop(&dl->dial.timer);
result = dl->next;
physical_Destroy(dl->physical);
free(dl->name);
free(dl);
return result;
}
void
datalink_Up(struct datalink *dl, int runscripts, int packetmode)
{
if (!Enabled(dl->bundle, OPT_FORCE_SCRIPTS) &&
(dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED)))
/* Ignore scripts */
runscripts = 0;
switch (dl->state) {
case DATALINK_CLOSED:
if (bundle_Phase(dl->bundle) == PHASE_DEAD ||
bundle_Phase(dl->bundle) == PHASE_TERMINATE)
bundle_NewPhase(dl->bundle, PHASE_ESTABLISH);
datalink_NewState(dl, DATALINK_OPENING);
dl->reconnect_tries =
dl->physical->type == PHYS_DIRECT ? 0 : dl->cfg.reconnect.max;
dl->dial.tries = dl->cfg.dial.max;
dl->script.run = runscripts;
dl->script.packetmode = packetmode;
break;
case DATALINK_OPENING:
if (!dl->script.run && runscripts)
dl->script.run = 1;
/* FALLTHROUGH */
case DATALINK_DIAL:
case DATALINK_LOGIN:
case DATALINK_READY:
if (!dl->script.packetmode && packetmode) {
dl->script.packetmode = 1;
if (dl->state == DATALINK_READY) {
dl->script.run = 0;
datalink_NewState(dl, DATALINK_CARRIER);
}
}
break;
}
}
void
datalink_Close(struct datalink *dl, int how)
{
/* Please close */
switch (dl->state) {
case DATALINK_OPEN:
peerid_Init(&dl->peer);
fsm2initial(&dl->physical->link.ccp.fsm);
/* FALLTHROUGH */
case DATALINK_CBCP:
case DATALINK_AUTH:
case DATALINK_LCP:
datalink_AuthReInit(dl);
if (how == CLOSE_LCP)
datalink_DontHangup(dl);
else if (how == CLOSE_STAYDOWN)
datalink_StayDown(dl);
fsm_Close(&dl->physical->link.lcp.fsm);
break;
default:
datalink_ComeDown(dl, how);
}
}
void
datalink_Down(struct datalink *dl, int how)
{
/* Carrier is lost */
switch (dl->state) {
case DATALINK_OPEN:
peerid_Init(&dl->peer);
fsm2initial(&dl->physical->link.ccp.fsm);
/* FALLTHROUGH */
case DATALINK_CBCP:
case DATALINK_AUTH:
case DATALINK_LCP:
fsm2initial(&dl->physical->link.lcp.fsm);
if (dl->state == DATALINK_OPENING)
return; /* we're doing a callback... */
/* FALLTHROUGH */
default:
datalink_ComeDown(dl, how);
}
}
void
datalink_StayDown(struct datalink *dl)
{
dl->dial.tries = -1;
dl->reconnect_tries = 0;
dl->stayonline = 0;
}
void
datalink_DontHangup(struct datalink *dl)
{
dl->dial.tries = -1;
dl->reconnect_tries = 0;
dl->stayonline = dl->state >= DATALINK_LCP ? 1 : 0;
}
int
datalink_Show(struct cmdargs const *arg)
{
prompt_Printf(arg->prompt, "Name: %s\n", arg->cx->name);
prompt_Printf(arg->prompt, " State: %s\n",
datalink_State(arg->cx));
prompt_Printf(arg->prompt, " Peer name: ");
if (*arg->cx->peer.authname)
prompt_Printf(arg->prompt, "%s\n", arg->cx->peer.authname);
else if (arg->cx->state == DATALINK_OPEN)
prompt_Printf(arg->prompt, "None requested\n");
else
prompt_Printf(arg->prompt, "N/A\n");
prompt_Printf(arg->prompt, " Discriminator: %s\n",
mp_Enddisc(arg->cx->peer.enddisc.class,
arg->cx->peer.enddisc.address,
arg->cx->peer.enddisc.len));
prompt_Printf(arg->prompt, "\nDefaults:\n");
prompt_Printf(arg->prompt, " Phone List: %s\n",
arg->cx->cfg.phone.list);
if (arg->cx->cfg.dial.max)
prompt_Printf(arg->prompt, " Dial tries: %d, delay ",
arg->cx->cfg.dial.max);
else
prompt_Printf(arg->prompt, " Dial tries: infinite, delay ");
if (arg->cx->cfg.dial.next_timeout >= 0)
prompt_Printf(arg->prompt, "%ds/", arg->cx->cfg.dial.next_timeout);
else
prompt_Printf(arg->prompt, "random/");
if (arg->cx->cfg.dial.timeout >= 0)
prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.dial.timeout);
else
prompt_Printf(arg->prompt, "random\n");
prompt_Printf(arg->prompt, " Reconnect tries: %d, delay ",
arg->cx->cfg.reconnect.max);
if (arg->cx->cfg.reconnect.timeout > 0)
prompt_Printf(arg->prompt, "%ds\n", arg->cx->cfg.reconnect.timeout);
else
prompt_Printf(arg->prompt, "random\n");
prompt_Printf(arg->prompt, " Callback %s ", arg->cx->physical->type ==
PHYS_DIRECT ? "accepted: " : "requested:");
if (!arg->cx->cfg.callback.opmask)
prompt_Printf(arg->prompt, "none\n");
else {
int comma = 0;
if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_NONE)) {
prompt_Printf(arg->prompt, "none");
comma = 1;
}
if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_AUTH)) {
prompt_Printf(arg->prompt, "%sauth", comma ? ", " : "");
comma = 1;
}
if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_E164)) {
prompt_Printf(arg->prompt, "%sE.164", comma ? ", " : "");
if (arg->cx->physical->type != PHYS_DIRECT)
prompt_Printf(arg->prompt, " (%s)", arg->cx->cfg.callback.msg);
comma = 1;
}
if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
prompt_Printf(arg->prompt, "%scbcp\n", comma ? ", " : "");
prompt_Printf(arg->prompt, " CBCP: delay: %ds\n",
arg->cx->cfg.cbcp.delay);
prompt_Printf(arg->prompt, " phone: ");
if (!strcmp(arg->cx->cfg.cbcp.phone, "*")) {
if (arg->cx->physical->type & PHYS_DIRECT)
prompt_Printf(arg->prompt, "Caller decides\n");
else
prompt_Printf(arg->prompt, "Dialback server decides\n");
} else
prompt_Printf(arg->prompt, "%s\n", arg->cx->cfg.cbcp.phone);
prompt_Printf(arg->prompt, " timeout: %lds\n",
arg->cx->cfg.cbcp.fsmretry);
} else
prompt_Printf(arg->prompt, "\n");
}
prompt_Printf(arg->prompt, " Dial Script: %s\n",
arg->cx->cfg.script.dial);
prompt_Printf(arg->prompt, " Login Script: %s\n",
arg->cx->cfg.script.login);
prompt_Printf(arg->prompt, " Logout Script: %s\n",
arg->cx->cfg.script.logout);
prompt_Printf(arg->prompt, " Hangup Script: %s\n",
arg->cx->cfg.script.hangup);
return 0;
}
int
datalink_SetReconnect(struct cmdargs const *arg)
{
if (arg->argc == arg->argn+2) {
arg->cx->cfg.reconnect.timeout = atoi(arg->argv[arg->argn]);
arg->cx->cfg.reconnect.max = atoi(arg->argv[arg->argn+1]);
return 0;
}
return -1;
}
int
datalink_SetRedial(struct cmdargs const *arg)
{
const char *sep, *osep;
int timeout, inc, maxinc, tries;
if (arg->argc == arg->argn+1 || arg->argc == arg->argn+2) {
if (strncasecmp(arg->argv[arg->argn], "random", 6) == 0 &&
(arg->argv[arg->argn][6] == '\0' || arg->argv[arg->argn][6] == '.')) {
arg->cx->cfg.dial.timeout = -1;
randinit();
} else {
timeout = atoi(arg->argv[arg->argn]);
if (timeout >= 0)
arg->cx->cfg.dial.timeout = timeout;
else {
log_Printf(LogWARN, "Invalid redial timeout\n");
return -1;
}
}
sep = strchr(arg->argv[arg->argn], '+');
if (sep) {
inc = atoi(++sep);
osep = sep;
if (inc >= 0)
arg->cx->cfg.dial.inc = inc;
else {
log_Printf(LogWARN, "Invalid timeout increment\n");
return -1;
}
sep = strchr(sep, '-');
if (sep) {
maxinc = atoi(++sep);
if (maxinc >= 0)
arg->cx->cfg.dial.maxinc = maxinc;
else {
log_Printf(LogWARN, "Invalid maximum timeout increments\n");
return -1;
}
} else {
/* Default timeout increment */
arg->cx->cfg.dial.maxinc = 10;
sep = osep;
}
} else {
/* Default timeout increment & max increment */
arg->cx->cfg.dial.inc = 0;
arg->cx->cfg.dial.maxinc = 10;
sep = arg->argv[arg->argn];
}
sep = strchr(sep, '.');
if (sep) {
if (strcasecmp(++sep, "random") == 0) {
arg->cx->cfg.dial.next_timeout = -1;
randinit();
} else {
timeout = atoi(sep);
if (timeout >= 0)
arg->cx->cfg.dial.next_timeout = timeout;
else {
log_Printf(LogWARN, "Invalid next redial timeout\n");
return -1;
}
}
} else
/* Default next timeout */
arg->cx->cfg.dial.next_timeout = DIAL_NEXT_TIMEOUT;
if (arg->argc == arg->argn+2) {
tries = atoi(arg->argv[arg->argn+1]);
if (tries >= 0) {
arg->cx->cfg.dial.max = tries;
} else {
log_Printf(LogWARN, "Invalid retry value\n");
return 1;
}
}
return 0;
}
return -1;
}
static const char * const states[] = {
"closed",
"opening",
"hangup",
"dial",
"carrier",
"logout",
"login",
"ready",
"lcp",
"auth",
"cbcp",
"open"
};
const char *
datalink_State(struct datalink *dl)
{
if (dl->state < 0 || dl->state >= sizeof states / sizeof states[0])
return "unknown";
return states[dl->state];
}
static void
datalink_NewState(struct datalink *dl, int state)
{
if (state != dl->state) {
if (state >= 0 && state < sizeof states / sizeof states[0]) {
log_Printf(LogPHASE, "%s: %s -> %s\n", dl->name, datalink_State(dl),
states[state]);
dl->state = state;
} else
log_Printf(LogERROR, "%s: Can't enter state %d !\n", dl->name, state);
}
}
struct datalink *
iov2datalink(struct bundle *bundle, struct iovec *iov, int *niov, int maxiov,
int fd, int *auxfd, int *nauxfd)
{
struct datalink *dl, *cdl;
struct fsm_retry copy;
char *oname;
dl = (struct datalink *)iov[(*niov)++].iov_base;
dl->name = iov[*niov].iov_base;
if (dl->name[DATALINK_MAXNAME-1]) {
dl->name[DATALINK_MAXNAME-1] = '\0';
if (strlen(dl->name) == DATALINK_MAXNAME - 1)
log_Printf(LogWARN, "Datalink name truncated to \"%s\"\n", dl->name);
}
/* Make sure the name is unique ! */
oname = NULL;
do {
for (cdl = bundle->links; cdl; cdl = cdl->next)
if (!strcasecmp(dl->name, cdl->name)) {
if (oname)
free(datalink_NextName(dl));
else
oname = datalink_NextName(dl);
break; /* Keep renaming 'till we have no conflicts */
}
} while (cdl);
if (oname) {
log_Printf(LogPHASE, "Rename link %s to %s\n", oname, dl->name);
free(oname);
} else {
dl->name = strdup(dl->name);
free(iov[*niov].iov_base);
}
(*niov)++;
dl->desc.type = DATALINK_DESCRIPTOR;
dl->desc.UpdateSet = datalink_UpdateSet;
dl->desc.IsSet = datalink_IsSet;
dl->desc.Read = datalink_Read;
dl->desc.Write = datalink_Write;
mp_linkInit(&dl->mp);
*dl->phone.list = '\0';
dl->phone.next = NULL;
dl->phone.alt = NULL;
dl->phone.chosen = "N/A";
dl->bundle = bundle;
dl->next = NULL;
memset(&dl->dial.timer, '\0', sizeof dl->dial.timer);
dl->dial.tries = 0;
dl->reconnect_tries = 0;
dl->parent = &bundle->fsm;
dl->fsmp.LayerStart = datalink_LayerStart;
dl->fsmp.LayerUp = datalink_LayerUp;
dl->fsmp.LayerDown = datalink_LayerDown;
dl->fsmp.LayerFinish = datalink_LayerFinish;
dl->fsmp.object = dl;
dl->physical = iov2physical(dl, iov, niov, maxiov, fd, auxfd, nauxfd);
if (!dl->physical) {
free(dl->name);
free(dl);
dl = NULL;
} else {
copy = dl->pap.cfg.fsm;
pap_Init(&dl->pap, dl->physical);
dl->pap.cfg.fsm = copy;
copy = dl->chap.auth.cfg.fsm;
chap_Init(&dl->chap, dl->physical);
dl->chap.auth.cfg.fsm = copy;
cbcp_Init(&dl->cbcp, dl->physical);
memset(&dl->chat, '\0', sizeof dl->chat); /* Force buf{start,end} reset */
chat_Init(&dl->chat, dl->physical);
log_Printf(LogPHASE, "%s: Transferred in %s state\n",
dl->name, datalink_State(dl));
}
return dl;
}
int
datalink2iov(struct datalink *dl, struct iovec *iov, int *niov, int maxiov,
int *auxfd, int *nauxfd)
{
/* If `dl' is NULL, we're allocating before a Fromiov() */
int link_fd;
if (dl) {
timer_Stop(&dl->dial.timer);
/* The following is purely for the sake of paranoia */
cbcp_Down(&dl->cbcp);
timer_Stop(&dl->pap.authtimer);
timer_Stop(&dl->chap.auth.authtimer);
}
if (*niov >= maxiov - 1) {
log_Printf(LogERROR, "Toiov: No room for datalink !\n");
if (dl) {
free(dl->name);
free(dl);
}
return -1;
}
iov[*niov].iov_base = (void *)dl;
iov[(*niov)++].iov_len = sizeof *dl;
iov[*niov].iov_base = dl ? realloc(dl->name, DATALINK_MAXNAME) : NULL;
iov[(*niov)++].iov_len = DATALINK_MAXNAME;
link_fd = physical2iov(dl ? dl->physical : NULL, iov, niov, maxiov, auxfd,
nauxfd);
if (link_fd == -1 && dl) {
free(dl->name);
free(dl);
}
return link_fd;
}
void
datalink_Rename(struct datalink *dl, const char *name)
{
free(dl->name);
dl->physical->link.name = dl->name = strdup(name);
}
char *
datalink_NextName(struct datalink *dl)
{
int f, n;
char *name, *oname;
n = strlen(dl->name);
name = (char *)malloc(n+3);
for (f = n - 1; f >= 0; f--)
if (!isdigit(dl->name[f]))
break;
n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name);
sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1);
oname = dl->name;
dl->name = name;
/* our physical link name isn't updated (it probably isn't created yet) */
return oname;
}
int
datalink_SetMode(struct datalink *dl, int mode)
{
if (!physical_SetMode(dl->physical, mode))
return 0;
if (dl->physical->type & (PHYS_DIRECT|PHYS_DEDICATED))
dl->script.run = 0;
if (dl->physical->type == PHYS_DIRECT)
dl->reconnect_tries = 0;
if (mode & (PHYS_DDIAL|PHYS_BACKGROUND|PHYS_FOREGROUND) &&
dl->state <= DATALINK_READY)
datalink_Up(dl, 1, 1);
return 1;
}
int
datalink_GetDialTimeout(struct datalink *dl)
{
int result = dl->cfg.dial.timeout + dl->dial.incs * dl->cfg.dial.inc;
if (dl->dial.incs < dl->cfg.dial.maxinc)
dl->dial.incs++;
return result;
}