376 lines
10 KiB
C
376 lines
10 KiB
C
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/*-
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* Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id$
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*/
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#include <sys/param.h>
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#include <netinet/in.h>
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#include <alias.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include "command.h"
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#include "mbuf.h"
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#include "log.h"
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#include "defs.h"
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#include "loadalias.h"
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#include "vars.h"
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#include "timer.h"
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#include "fsm.h"
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#include "lcp.h"
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#include "descriptor.h"
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#include "hdlc.h"
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#include "async.h"
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#include "throughput.h"
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#include "link.h"
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#include "physical.h"
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#include "bundle.h"
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#include "chat.h"
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#include "datalink.h"
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#include "ccp.h"
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#include "main.h"
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#include "modem.h"
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#include "iplist.h"
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#include "ipcp.h"
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static void
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datalink_OpenTimeout(void *v)
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{
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struct datalink *dl = (struct datalink *)v;
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StopTimer(&dl->dial_timer);
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if (dl->state == DATALINK_OPENING)
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LogPrintf(LogPHASE, "%s: Redial timer expired.\n", dl->name);
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}
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static void
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datalink_StartDialTimer(struct datalink *dl, int Timeout)
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{
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StopTimer(&dl->dial_timer);
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if (Timeout) {
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dl->dial_timer.state = TIMER_STOPPED;
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if (Timeout > 0)
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dl->dial_timer.load = Timeout * SECTICKS;
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else
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dl->dial_timer.load = (random() % REDIAL_PERIOD) * SECTICKS;
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dl->dial_timer.func = datalink_OpenTimeout;
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dl->dial_timer.arg = dl;
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StartTimer(&dl->dial_timer);
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if (dl->state == DATALINK_OPENING)
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LogPrintf(LogPHASE, "%s: Enter pause (%d) for redialing.\n",
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dl->name, Timeout);
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}
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}
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static void
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datalink_HangupDone(struct datalink *dl)
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{
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modem_Close(dl->physical);
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if (!dl->dial_tries || (dl->dial_tries < 0 && !dl->reconnect_tries)) {
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LogPrintf(LogPHASE, "%s: Entering CLOSED state\n", dl->name);
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dl->state = DATALINK_CLOSED;
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dl->dial_tries = -1;
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dl->reconnect_tries = 0;
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bundle_LinkClosed(dl->bundle, dl);
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} else {
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LogPrintf(LogPHASE, "%s: Entering OPENING state\n", dl->name);
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dl->state = DATALINK_OPENING;
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}
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if (VarNextPhone == NULL)
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datalink_StartDialTimer(dl, VarRedialTimeout);
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else
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datalink_StartDialTimer(dl, VarRedialNextTimeout);
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}
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static int
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datalink_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e,
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int *n)
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{
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struct datalink *dl = descriptor2datalink(d);
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int result;
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switch (dl->state) {
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case DATALINK_CLOSED:
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return 0;
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case DATALINK_OPENING:
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if (dl->dial_timer.state != TIMER_RUNNING) {
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if (--dl->dial_tries < 0)
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dl->dial_tries = 0;
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if (modem_Open(dl->physical, dl->bundle) >= 0) {
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LogPrintf(LogPHASE, "%s: Entering DIAL state\n", dl->name);
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dl->state = DATALINK_DIAL;
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chat_Init(&dl->chat, dl->physical, VarDialScript, 1);
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if (!(mode & MODE_DDIAL) && VarDialTries)
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LogPrintf(LogCHAT, "%s: Dial attempt %u of %d\n",
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dl->name, VarDialTries - dl->dial_tries, VarDialTries);
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} else {
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if (!(mode & MODE_DDIAL) && VarDialTries)
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LogPrintf(LogCHAT, "Failed to open modem (attempt %u of %d)\n",
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VarDialTries - dl->dial_tries, VarDialTries);
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else
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LogPrintf(LogCHAT, "Failed to open modem\n");
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if (!(mode & MODE_DDIAL) && VarDialTries && dl->dial_tries == 0) {
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LogPrintf(LogPHASE, "%s: Entering CLOSED state\n", dl->name);
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dl->state = DATALINK_CLOSED;
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dl->reconnect_tries = 0;
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dl->dial_tries = -1;
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if (mode & MODE_BACKGROUND)
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CleaningUp = 1;
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} else
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datalink_StartDialTimer(dl, VarRedialTimeout);
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}
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}
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return 0;
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case DATALINK_HANGUP:
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case DATALINK_DIAL:
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case DATALINK_LOGIN:
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result = descriptor_UpdateSet(&dl->chat.desc, r, w, e, n);
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switch (dl->chat.state) {
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case CHAT_DONE:
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/* script succeeded */
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switch(dl->state) {
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case DATALINK_HANGUP:
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datalink_HangupDone(dl);
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break;
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case DATALINK_DIAL:
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LogPrintf(LogPHASE, "%s: Entering LOGIN state\n", dl->name);
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dl->state = DATALINK_LOGIN;
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chat_Init(&dl->chat, dl->physical, VarLoginScript, 0);
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break;
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case DATALINK_LOGIN:
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dl->dial_tries = 0;
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if (modem_Raw(dl->physical, dl->bundle) < 0) {
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LogPrintf(LogWARN, "PacketMode: Not connected.\n");
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LogPrintf(LogPHASE, "%s: Entering HANGUP state\n", dl->name);
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dl->state = DATALINK_HANGUP;
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modem_Offline(dl->physical);
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chat_Init(&dl->chat, dl->physical, VarHangupScript, 1);
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} else {
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LogPrintf(LogPHASE, "%s: Entering OPEN state\n", dl->name);
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dl->state = DATALINK_OPEN;
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dl->dial_tries = -1;
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PacketMode(dl->bundle, VarOpenMode);
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}
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break;
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}
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break;
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case CHAT_FAILED:
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/* Going down - script failed */
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LogPrintf(LogWARN, "Chat script failed\n");
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switch(dl->state) {
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case DATALINK_HANGUP:
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datalink_HangupDone(dl);
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break;
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case DATALINK_DIAL:
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case DATALINK_LOGIN:
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LogPrintf(LogPHASE, "%s: Entering HANGUP state\n", dl->name);
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dl->state = DATALINK_HANGUP;
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modem_Offline(dl->physical);
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chat_Init(&dl->chat, dl->physical, VarHangupScript, 1);
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break;
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}
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break;
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}
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break;
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case DATALINK_OPEN:
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result = descriptor_UpdateSet(&dl->physical->desc, r, w, e, n);
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break;
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}
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return result;
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}
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static int
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datalink_IsSet(struct descriptor *d, fd_set *fdset)
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{
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struct datalink *dl = descriptor2datalink(d);
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switch (dl->state) {
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case DATALINK_CLOSED:
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break;
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case DATALINK_HANGUP:
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case DATALINK_DIAL:
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case DATALINK_LOGIN:
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return descriptor_IsSet(&dl->chat.desc, fdset);
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case DATALINK_OPEN:
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return descriptor_IsSet(&dl->physical->desc, fdset);
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}
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return 0;
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}
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static void
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datalink_Read(struct descriptor *d, struct bundle *bundle, const fd_set *fdset)
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{
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struct datalink *dl = descriptor2datalink(d);
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switch (dl->state) {
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case DATALINK_CLOSED:
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break;
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case DATALINK_HANGUP:
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case DATALINK_DIAL:
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case DATALINK_LOGIN:
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descriptor_Read(&dl->chat.desc, bundle, fdset);
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break;
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case DATALINK_OPEN:
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descriptor_Read(&dl->physical->desc, bundle, fdset);
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break;
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}
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}
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static void
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datalink_Write(struct descriptor *d, const fd_set *fdset)
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{
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struct datalink *dl = descriptor2datalink(d);
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switch (dl->state) {
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case DATALINK_CLOSED:
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break;
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case DATALINK_HANGUP:
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case DATALINK_DIAL:
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case DATALINK_LOGIN:
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descriptor_Write(&dl->chat.desc, fdset);
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break;
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case DATALINK_OPEN:
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descriptor_Write(&dl->physical->desc, fdset);
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break;
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}
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}
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struct datalink *
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datalink_Create(const char *name, struct bundle *bundle)
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{
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struct datalink *dl;
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dl = (struct datalink *)malloc(sizeof(struct datalink));
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if (dl == NULL)
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return dl;
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dl->desc.type = DATALINK_DESCRIPTOR;
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dl->desc.next = NULL;
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dl->desc.UpdateSet = datalink_UpdateSet;
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dl->desc.IsSet = datalink_IsSet;
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dl->desc.Read = datalink_Read;
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dl->desc.Write = datalink_Write;
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dl->state = DATALINK_CLOSED;
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dl->bundle = bundle;
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dl->next = NULL;
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memset(&dl->dial_timer, '\0', sizeof dl->dial_timer);
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dl->dial_tries = 0;
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dl->name = strdup(name);
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if ((dl->physical = modem_Create(dl->name)) == NULL) {
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free(dl->name);
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free(dl);
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return NULL;
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}
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IpcpDefAddress();
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LcpInit(dl->bundle, dl->physical);
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CcpInit(dl->bundle, &dl->physical->link);
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LogPrintf(LogPHASE, "%s: Entering CLOSED state\n", dl->name);
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return dl;
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}
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struct datalink *
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datalink_Destroy(struct datalink *dl)
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{
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struct datalink *result;
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if (dl->state != DATALINK_CLOSED)
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LogPrintf(LogERROR, "Oops, destroying a datalink in state %d\n", dl->state);
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result = dl->next;
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chat_Destroy(&dl->chat);
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link_Destroy(&dl->physical->link);
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free(dl->name);
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free(dl);
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return result;
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}
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void
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datalink_Up(struct datalink *dl)
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{
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if (dl->state == DATALINK_CLOSED) {
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LogPrintf(LogPHASE, "%s: Entering OPENING state\n", dl->name);
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dl->state = DATALINK_OPENING;
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dl->reconnect_tries = VarReconnectTries;
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dl->dial_tries = VarDialTries;
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}
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}
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void
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datalink_Close(struct datalink *dl, int stay)
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{
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/* Please close */
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FsmClose(&CcpInfo.fsm);
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FsmClose(&LcpInfo.fsm);
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if (stay) {
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dl->dial_tries = -1;
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dl->reconnect_tries = 0;
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}
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}
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void
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datalink_Down(struct datalink *dl, int stay)
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{
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/* Carrier is lost */
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LogPrintf(LogPHASE, "datalink_Down: %sstay down\n", stay ? "" : "don't ");
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FsmDown(&CcpInfo.fsm);
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FsmClose(&CcpInfo.fsm);
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FsmDown(&LcpInfo.fsm);
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if (CleaningUp || stay)
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FsmClose(&LcpInfo.fsm);
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else
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FsmOpen(&CcpInfo.fsm);
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if (dl->state != DATALINK_CLOSED && dl->state != DATALINK_HANGUP) {
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LogPrintf(LogPHASE, "%s: Entering HANGUP state\n", dl->name);
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dl->state = DATALINK_HANGUP;
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modem_Offline(dl->physical);
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chat_Init(&dl->chat, dl->physical, VarHangupScript, 1);
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}
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if (stay) {
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dl->dial_tries = -1;
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dl->reconnect_tries = 0;
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}
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
datalink_StayDown(struct datalink *dl)
|
||
|
|
{
|
||
|
|
dl->reconnect_tries = 0;
|
||
|
|
}
|