1014 lines
24 KiB
C
1014 lines
24 KiB
C
/*
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* PPP Modem handling module
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*
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* Written by Toshiharu OHNO (tony-o@iij.ad.jp)
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*
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* Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the Internet Initiative Japan, Inc. The name of the
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* IIJ may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: modem.c,v 1.77.2.22 1998/02/17 19:29:00 brian Exp $
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*
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* TODO:
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <unistd.h>
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#include <utmp.h>
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#ifdef __OpenBSD__
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#include <util.h>
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#else
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#include <libutil.h>
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#endif
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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 "id.h"
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#include "timer.h"
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#include "fsm.h"
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#include "hdlc.h"
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#include "lcp.h"
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#include "ip.h"
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#include "modem.h"
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#include "loadalias.h"
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#include "vars.h"
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#include "main.h"
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#include "throughput.h"
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#include "async.h"
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#include "bundle.h"
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#include "link.h"
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#include "descriptor.h"
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#include "physical.h"
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#include "prompt.h"
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#include "chat.h"
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#include "datalink.h"
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#ifndef O_NONBLOCK
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#ifdef O_NDELAY
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#define O_NONBLOCK O_NDELAY
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#endif
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#endif
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static void modem_StartOutput(struct link *);
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static int modem_IsActive(struct link *);
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static void modem_Hangup(struct link *, int);
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static void modem_Destroy(struct link *);
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static void modem_DescriptorRead(struct descriptor *, struct bundle *,
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const fd_set *);
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static int modem_UpdateSet(struct descriptor *, fd_set *, fd_set *, fd_set *,
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int *);
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struct physical *
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modem_Create(const char *name)
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{
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struct physical *p;
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p = (struct physical *)malloc(sizeof(struct physical));
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if (!p)
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return NULL;
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memset(p, '\0', sizeof *p);
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p->link.type = PHYSICAL_LINK;
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p->link.name = strdup(name);
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p->link.len = sizeof *p;
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p->link.StartOutput = modem_StartOutput;
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p->link.IsActive = modem_IsActive;
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p->link.Close = modem_Hangup;
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p->link.Destroy = modem_Destroy;
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p->fd = -1;
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p->cfg.rts_cts = MODEM_CTSRTS;
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p->cfg.speed = MODEM_SPEED;
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p->cfg.parity = CS8;
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p->desc.type = PHYSICAL_DESCRIPTOR;
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p->desc.UpdateSet = modem_UpdateSet;
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p->desc.IsSet = Physical_IsSet;
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p->desc.Read = modem_DescriptorRead;
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p->desc.Write = Physical_DescriptorWrite;
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return p;
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}
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/* XXX-ML this should probably change when we add support for other
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types of devices */
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#define Online(modem) ((modem)->mbits & TIOCM_CD)
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static void modem_LogicalClose(struct physical *);
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static struct speeds {
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int nspeed;
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speed_t speed;
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} speeds[] = {
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#ifdef B50
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{ 50, B50, },
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#endif
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#ifdef B75
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{ 75, B75, },
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#endif
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#ifdef B110
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{ 110, B110, },
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#endif
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#ifdef B134
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{ 134, B134, },
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#endif
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#ifdef B150
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{ 150, B150, },
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#endif
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#ifdef B200
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{ 200, B200, },
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#endif
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#ifdef B300
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{ 300, B300, },
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#endif
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#ifdef B600
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{ 600, B600, },
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#endif
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#ifdef B1200
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{ 1200, B1200, },
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#endif
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#ifdef B1800
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{ 1800, B1800, },
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#endif
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#ifdef B2400
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{ 2400, B2400, },
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#endif
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#ifdef B4800
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{ 4800, B4800, },
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#endif
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#ifdef B9600
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{ 9600, B9600, },
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#endif
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#ifdef B19200
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{ 19200, B19200, },
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#endif
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#ifdef B38400
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{ 38400, B38400, },
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#endif
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#ifndef _POSIX_SOURCE
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#ifdef B7200
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{ 7200, B7200, },
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#endif
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#ifdef B14400
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{ 14400, B14400, },
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#endif
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#ifdef B28800
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{ 28800, B28800, },
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#endif
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#ifdef B57600
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{ 57600, B57600, },
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#endif
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#ifdef B76800
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{ 76800, B76800, },
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#endif
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#ifdef B115200
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{ 115200, B115200, },
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#endif
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#ifdef B230400
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{ 230400, B230400, },
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#endif
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#ifdef EXTA
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{ 19200, EXTA, },
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#endif
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#ifdef EXTB
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{ 38400, EXTB, },
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#endif
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#endif /* _POSIX_SOURCE */
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{ 0, 0 }
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};
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static int
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SpeedToInt(speed_t speed)
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{
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struct speeds *sp;
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for (sp = speeds; sp->nspeed; sp++) {
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if (sp->speed == speed) {
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return (sp->nspeed);
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}
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}
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return 0;
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}
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speed_t
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IntToSpeed(int nspeed)
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{
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struct speeds *sp;
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for (sp = speeds; sp->nspeed; sp++) {
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if (sp->nspeed == nspeed) {
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return (sp->speed);
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}
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}
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return B0;
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}
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struct timeoutArg {
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struct bundle *bundle;
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struct physical *modem;
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};
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/*
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* modem_Timeout() watches DCD signal and notifies if it's status is changed.
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*
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*/
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static void
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modem_Timeout(void *data)
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{
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struct timeoutArg *to = data;
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int ombits = to->modem->mbits;
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int change;
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StopTimer(&to->modem->link.Timer);
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StartTimer(&to->modem->link.Timer);
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if (to->modem->abort) {
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/* Something went horribly wrong */
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to->modem->abort = 0;
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link_Close(&to->modem->link, to->bundle, 0, 0);
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} else if (to->modem->dev_is_modem) {
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if (to->modem->fd >= 0) {
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if (ioctl(to->modem->fd, TIOCMGET, &to->modem->mbits) < 0) {
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LogPrintf(LogPHASE, "ioctl error (%s)!\n", strerror(errno));
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link_Close(&to->modem->link, to->bundle, 0, 0);
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return;
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}
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} else
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to->modem->mbits = 0;
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change = ombits ^ to->modem->mbits;
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if (change & TIOCM_CD) {
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if (to->modem->mbits & TIOCM_CD) {
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LogPrintf(LogDEBUG, "modem_Timeout: offline -> online\n");
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/*
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* In dedicated mode, start packet mode immediate after we detected
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* carrier.
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*/
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#if 0
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/*
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* Dedicated links should never have datalink::script.run set, and should
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* always have datalink::script.packetmode set - therefore we're going to
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* go into packet mode immediately.
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*/
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#ifdef notyet
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if (to->modem->is_dedicated)
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PacketMode(to->bundle, VarOpenMode);
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#else
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if (mode & MODE_DEDICATED)
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PacketMode(to->bundle, VarOpenMode);
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#endif
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#endif
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} else {
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LogPrintf(LogDEBUG, "modem_Timeout: online -> offline\n");
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link_Close(&to->modem->link, to->bundle, 0, 0);
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}
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}
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else
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LogPrintf(LogDEBUG, "modem_Timeout: Still %sline\n",
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Online(to->modem) ? "on" : "off");
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} else if (!Online(to->modem)) {
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/* mbits was set to zero in modem_Open() */
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to->modem->mbits = TIOCM_CD;
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}
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}
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static void
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modem_StartTimer(struct bundle *bundle, struct physical *modem)
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{
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struct pppTimer *ModemTimer;
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static struct timeoutArg to;
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to.modem = modem;
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to.bundle = bundle;
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ModemTimer = &modem->link.Timer;
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StopTimer(ModemTimer);
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ModemTimer->state = TIMER_STOPPED;
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ModemTimer->load = SECTICKS;
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ModemTimer->func = modem_Timeout;
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ModemTimer->arg = &to;
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LogPrintf(LogDEBUG, "ModemTimer using modem_Timeout() - %p\n", modem_Timeout);
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StartTimer(ModemTimer);
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}
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static struct parity {
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const char *name;
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const char *name1;
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int set;
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} validparity[] = {
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{ "even", "P_EVEN", CS7 | PARENB },
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{ "odd", "P_ODD", CS7 | PARENB | PARODD },
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{ "none", "P_ZERO", CS8 },
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{ NULL, 0 },
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};
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static int
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GetParityValue(const char *str)
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{
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struct parity *pp;
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for (pp = validparity; pp->name; pp++) {
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if (strcasecmp(pp->name, str) == 0 ||
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strcasecmp(pp->name1, str) == 0) {
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return pp->set;
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}
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}
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return (-1);
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}
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int
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modem_SetParity(struct physical *modem, const char *str)
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{
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struct termios rstio;
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int val;
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val = GetParityValue(str);
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if (val > 0) {
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modem->cfg.parity = val;
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tcgetattr(modem->fd, &rstio);
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rstio.c_cflag &= ~(CSIZE | PARODD | PARENB);
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rstio.c_cflag |= val;
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tcsetattr(modem->fd, TCSADRAIN, &rstio);
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return 0;
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}
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LogPrintf(LogWARN, "modem_SetParity: %s: Invalid parity\n", str);
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return -1;
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}
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static int
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OpenConnection(char *host, char *port)
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{
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struct sockaddr_in dest;
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int sock;
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struct hostent *hp;
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struct servent *sp;
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dest.sin_family = AF_INET;
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dest.sin_addr.s_addr = inet_addr(host);
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if (dest.sin_addr.s_addr == INADDR_NONE) {
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hp = gethostbyname(host);
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if (hp) {
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memcpy(&dest.sin_addr.s_addr, hp->h_addr_list[0], 4);
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} else {
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LogPrintf(LogWARN, "OpenConnection: unknown host: %s\n", host);
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return (-1);
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}
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}
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dest.sin_port = htons(atoi(port));
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if (dest.sin_port == 0) {
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sp = getservbyname(port, "tcp");
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if (sp) {
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dest.sin_port = sp->s_port;
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} else {
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LogPrintf(LogWARN, "OpenConnection: unknown service: %s\n", port);
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return (-1);
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}
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}
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LogPrintf(LogPHASE, "Connecting to %s:%s\n", host, port);
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sock = socket(PF_INET, SOCK_STREAM, 0);
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if (sock < 0) {
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return (sock);
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}
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if (connect(sock, (struct sockaddr *)&dest, sizeof dest) < 0) {
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LogPrintf(LogWARN, "OpenConnection: connection failed.\n");
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return (-1);
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}
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LogPrintf(LogDEBUG, "OpenConnection: modem fd is %d.\n", sock);
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return (sock);
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}
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static int
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modem_lock(struct physical *modem, int tunno)
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{
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int res;
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FILE *lockfile;
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char fn[MAXPATHLEN];
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if (*VarDevice != '/')
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return 0;
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if (
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#ifdef notyet
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!modem->is_direct &&
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#else
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!(mode & MODE_DIRECT) &&
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#endif
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(res = ID0uu_lock(VarBaseDevice)) != UU_LOCK_OK) {
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if (res == UU_LOCK_INUSE)
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LogPrintf(LogPHASE, "Modem %s is in use\n", VarDevice);
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else
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LogPrintf(LogPHASE, "Modem %s is in use: uu_lock: %s\n",
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VarDevice, uu_lockerr(res));
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return (-1);
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}
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snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, VarBaseDevice);
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lockfile = ID0fopen(fn, "w");
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if (lockfile != NULL) {
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fprintf(lockfile, "tun%d\n", tunno);
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fclose(lockfile);
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}
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#ifndef RELEASE_CRUNCH
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else
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LogPrintf(LogALERT, "Warning: Can't create %s: %s\n", fn, strerror(errno));
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#endif
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return 0;
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}
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static void
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modem_Unlock(struct physical *modem)
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{
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char fn[MAXPATHLEN];
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if (*VarDevice != '/')
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return;
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snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, VarBaseDevice);
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#ifndef RELEASE_CRUNCH
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if (ID0unlink(fn) == -1)
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LogPrintf(LogALERT, "Warning: Can't remove %s: %s\n", fn, strerror(errno));
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#else
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ID0unlink(fn);
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#endif
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if (
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#ifdef notyet
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!modem->is_direct &&
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#else
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!(mode & MODE_DIRECT) &&
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#endif
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ID0uu_unlock(VarBaseDevice) == -1)
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LogPrintf(LogALERT, "Warning: Can't uu_unlock %s\n", fn);
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}
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static void
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modem_Found(struct physical *modem)
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{
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throughput_start(&modem->link.throughput);
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modem->connect_count++;
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LogPrintf(LogPHASE, "Connected!\n");
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}
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|
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void
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modem_SetDeviceName(struct physical *modem, const char *name)
|
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{
|
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if (name == NULL)
|
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name = "";
|
|
|
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if (link_IsActive(&modem->link))
|
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LogPrintf(LogWARN,
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"Cannot change device to \"%s\" when \"%s\" is open\n",
|
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name, Physical_GetDevice(modem));
|
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else
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Physical_SetDevice(modem, name);
|
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}
|
|
|
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int
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modem_Open(struct physical *modem, struct bundle *bundle)
|
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{
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struct termios rstio;
|
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int oldflag;
|
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char *host, *port;
|
|
char *cp;
|
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char tmpDeviceList[sizeof VarDeviceList];
|
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char *tmpDevice;
|
|
|
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if (modem->fd >= 0)
|
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LogPrintf(LogDEBUG, "modem_Open: Modem is already open!\n");
|
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/* We're going back into "term" mode */
|
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else if (
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#ifdef notyet
|
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modem->is_direct
|
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#else
|
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mode & MODE_DIRECT
|
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#endif
|
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) {
|
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if (isatty(STDIN_FILENO)) {
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LogPrintf(LogDEBUG, "modem_Open(direct): Modem is a tty\n");
|
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modem_SetDeviceName(modem, ttyname(STDIN_FILENO));
|
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if (modem_lock(modem, bundle->unit) == -1) {
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close(STDIN_FILENO);
|
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return -1;
|
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}
|
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modem->fd = STDIN_FILENO;
|
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modem_Found(modem);
|
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} else {
|
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LogPrintf(LogDEBUG, "modem_Open(direct): Modem is not a tty\n");
|
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modem_SetDeviceName(modem, NULL);
|
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/* We don't call modem_Timeout() with this type of connection */
|
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modem_Found(modem);
|
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return modem->fd = STDIN_FILENO;
|
|
}
|
|
} else {
|
|
strncpy(tmpDeviceList, VarDeviceList, sizeof tmpDeviceList - 1);
|
|
tmpDeviceList[sizeof tmpDeviceList - 1] = '\0';
|
|
|
|
for(tmpDevice=strtok(tmpDeviceList, ","); tmpDevice && (modem->fd < 0);
|
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tmpDevice=strtok(NULL,",")) {
|
|
strncpy(VarDevice, tmpDevice, sizeof VarDevice - 1);
|
|
VarDevice[sizeof VarDevice - 1]= '\0';
|
|
VarBaseDevice = strrchr(VarDevice, '/');
|
|
VarBaseDevice = VarBaseDevice ? VarBaseDevice + 1 : "";
|
|
|
|
if (strncmp(VarDevice, "/dev/", 5) == 0) {
|
|
if (modem_lock(modem, bundle->unit) == -1) {
|
|
modem->fd = -1;
|
|
}
|
|
else {
|
|
modem->fd = ID0open(VarDevice, O_RDWR | O_NONBLOCK);
|
|
if (modem->fd < 0) {
|
|
LogPrintf(LogERROR, "modem_Open failed: %s: %s\n", VarDevice,
|
|
strerror(errno));
|
|
modem_Unlock(modem);
|
|
modem->fd = -1;
|
|
}
|
|
else {
|
|
modem_Found(modem);
|
|
LogPrintf(LogDEBUG, "modem_Open: Modem is %s\n", VarDevice);
|
|
}
|
|
}
|
|
} else {
|
|
/* PPP over TCP */
|
|
cp = strchr(VarDevice, ':');
|
|
if (cp) {
|
|
*cp = '\0';
|
|
host = VarDevice;
|
|
port = cp + 1;
|
|
if (*host && *port) {
|
|
modem->fd = OpenConnection(host, port);
|
|
*cp = ':'; /* Don't destroy VarDevice */
|
|
if (modem->fd < 0)
|
|
return (-1);
|
|
modem_Found(modem);
|
|
LogPrintf(LogDEBUG, "modem_Open: Modem is socket %s\n", VarDevice);
|
|
} else {
|
|
*cp = ':'; /* Don't destroy VarDevice */
|
|
LogPrintf(LogERROR, "Invalid host:port: \"%s\"\n", VarDevice);
|
|
return (-1);
|
|
}
|
|
} else {
|
|
LogPrintf(LogERROR,
|
|
"Device (%s) must be in /dev or be a host:port pair\n",
|
|
VarDevice);
|
|
return (-1);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (modem->fd < 0)
|
|
return modem->fd;
|
|
}
|
|
|
|
/*
|
|
* If we are working on tty device, change it's mode into the one desired
|
|
* for further operation. In this implementation, we assume that modem is
|
|
* configuted to use CTS/RTS flow control.
|
|
*/
|
|
modem->mbits = 0;
|
|
modem->dev_is_modem = isatty(modem->fd) || Physical_IsSync(modem);
|
|
if (Physical_IsSync(modem))
|
|
nointr_sleep(1);
|
|
if (modem->dev_is_modem && !Physical_IsSync(modem)) {
|
|
tcgetattr(modem->fd, &rstio);
|
|
modem->ios = rstio;
|
|
LogPrintf(LogDEBUG, "modem_Open: modem = %d\n", modem->fd);
|
|
LogPrintf(LogDEBUG, "modem_Open: modem (get): iflag = %x, oflag = %x,"
|
|
" cflag = %x\n", rstio.c_iflag, rstio.c_oflag, rstio.c_cflag);
|
|
cfmakeraw(&rstio);
|
|
if (modem->cfg.rts_cts)
|
|
rstio.c_cflag |= CLOCAL | CCTS_OFLOW | CRTS_IFLOW;
|
|
else {
|
|
rstio.c_cflag |= CLOCAL;
|
|
rstio.c_iflag |= IXOFF;
|
|
}
|
|
rstio.c_iflag |= IXON;
|
|
if (
|
|
#ifdef notyet
|
|
!modem->is_dedicated
|
|
#else
|
|
!(mode & MODE_DEDICATED)
|
|
#endif
|
|
)
|
|
rstio.c_cflag |= HUPCL;
|
|
if (
|
|
#ifdef notyet
|
|
!modem->is_direct
|
|
#else
|
|
!(mode & MODE_DIRECT)
|
|
#endif
|
|
) {
|
|
|
|
/*
|
|
* If we are working as direct mode, don't change tty speed.
|
|
*/
|
|
rstio.c_cflag &= ~(CSIZE | PARODD | PARENB);
|
|
rstio.c_cflag |= modem->cfg.parity;
|
|
if (cfsetspeed(&rstio, IntToSpeed(modem->cfg.speed)) == -1) {
|
|
LogPrintf(LogWARN, "Unable to set modem speed (modem %d to %d)\n",
|
|
modem->fd, modem->cfg.speed);
|
|
}
|
|
}
|
|
tcsetattr(modem->fd, TCSADRAIN, &rstio);
|
|
LogPrintf(LogDEBUG, "modem (put): iflag = %x, oflag = %x, cflag = %x\n",
|
|
rstio.c_iflag, rstio.c_oflag, rstio.c_cflag);
|
|
|
|
if (
|
|
#ifdef notyet
|
|
!modem->is_direct
|
|
#else
|
|
!(mode & MODE_DIRECT)
|
|
#endif
|
|
)
|
|
if (ioctl(modem->fd, TIOCMGET, &modem->mbits)) {
|
|
LogPrintf(LogERROR, "modem_Open: Cannot get modem status: %s\n",
|
|
strerror(errno));
|
|
modem_LogicalClose(modem);
|
|
return (-1);
|
|
}
|
|
LogPrintf(LogDEBUG, "modem_Open: modem control = %o\n", modem->mbits);
|
|
|
|
oldflag = fcntl(modem->fd, F_GETFL, 0);
|
|
if (oldflag < 0) {
|
|
LogPrintf(LogERROR, "modem_Open: Cannot get modem flags: %s\n",
|
|
strerror(errno));
|
|
modem_LogicalClose(modem);
|
|
return (-1);
|
|
}
|
|
(void) fcntl(modem->fd, F_SETFL, oldflag & ~O_NONBLOCK);
|
|
}
|
|
modem_StartTimer(bundle, modem);
|
|
|
|
return (modem->fd);
|
|
}
|
|
|
|
int
|
|
modem_Speed(struct physical *modem)
|
|
{
|
|
struct termios rstio;
|
|
|
|
tcgetattr(modem->fd, &rstio);
|
|
return (SpeedToInt(cfgetispeed(&rstio)));
|
|
}
|
|
|
|
/*
|
|
* Put modem tty line into raw mode which is necessary in packet mode operation
|
|
*/
|
|
int
|
|
modem_Raw(struct physical *modem, struct bundle *bundle)
|
|
{
|
|
struct timeoutArg to;
|
|
struct termios rstio;
|
|
int oldflag;
|
|
|
|
LogPrintf(LogDEBUG, "Entering modem_Raw\n");
|
|
|
|
if (!isatty(modem->fd) || Physical_IsSync(modem))
|
|
return 0;
|
|
|
|
if (
|
|
#ifdef notyet
|
|
!modem->is_direct &&
|
|
#else
|
|
!(mode & MODE_DIRECT) &&
|
|
#endif
|
|
modem->fd >= 0 && !Online(modem)) {
|
|
LogPrintf(LogDEBUG, "modem_Raw: modem = %d, mbits = %x\n",
|
|
modem->fd, modem->mbits);
|
|
}
|
|
tcgetattr(modem->fd, &rstio);
|
|
cfmakeraw(&rstio);
|
|
if (modem->cfg.rts_cts)
|
|
rstio.c_cflag |= CLOCAL | CCTS_OFLOW | CRTS_IFLOW;
|
|
else
|
|
rstio.c_cflag |= CLOCAL;
|
|
|
|
if (
|
|
#ifdef notyet
|
|
!modem->is_dedicated
|
|
#else
|
|
!(mode & MODE_DEDICATED)
|
|
#endif
|
|
)
|
|
rstio.c_cflag |= HUPCL;
|
|
tcsetattr(modem->fd, TCSADRAIN, &rstio);
|
|
oldflag = fcntl(modem->fd, F_GETFL, 0);
|
|
if (oldflag < 0)
|
|
return (-1);
|
|
(void) fcntl(modem->fd, F_SETFL, oldflag | O_NONBLOCK);
|
|
|
|
to.modem = modem;
|
|
to.bundle = bundle;
|
|
modem_Timeout(&to);
|
|
|
|
return Online(modem) ? 0 : -1;
|
|
}
|
|
|
|
static void
|
|
modem_Unraw(struct physical *modem)
|
|
{
|
|
int oldflag;
|
|
|
|
if (isatty(modem->fd) && !Physical_IsSync(modem)) {
|
|
tcsetattr(modem->fd, TCSAFLUSH, &modem->ios);
|
|
oldflag = fcntl(modem->fd, F_GETFL, 0);
|
|
if (oldflag < 0)
|
|
return;
|
|
(void) fcntl(modem->fd, F_SETFL, oldflag & ~O_NONBLOCK);
|
|
}
|
|
}
|
|
|
|
static void
|
|
modem_PhysicalClose(struct physical *modem)
|
|
{
|
|
LogPrintf(LogDEBUG, "modem_PhysicalClose\n");
|
|
close(modem->fd);
|
|
modem->fd = -1;
|
|
throughput_log(&modem->link.throughput, LogPHASE, "Modem");
|
|
}
|
|
|
|
static int force_hack;
|
|
|
|
static void
|
|
modem_Hangup(struct link *l, int dedicated_force)
|
|
{
|
|
/* We're about to close (pre hangup script) */
|
|
struct physical *modem = (struct physical *)l;
|
|
|
|
force_hack = dedicated_force;
|
|
if (modem->fd >= 0) {
|
|
StopTimer(&modem->link.Timer);
|
|
throughput_stop(&modem->link.throughput);
|
|
|
|
if (prompt_IsTermMode(&prompt))
|
|
prompt_TtyCommandMode(&prompt);
|
|
}
|
|
}
|
|
|
|
void
|
|
modem_Offline(struct physical *modem)
|
|
{
|
|
if (modem->fd >= 0) {
|
|
struct termios tio;
|
|
|
|
modem->mbits &= ~TIOCM_DTR;
|
|
if (isatty(modem->fd) && Online(modem)) {
|
|
tcgetattr(modem->fd, &tio);
|
|
if (cfsetspeed(&tio, B0) == -1)
|
|
LogPrintf(LogWARN, "Unable to set modem to speed 0\n");
|
|
else
|
|
tcsetattr(modem->fd, TCSANOW, &tio);
|
|
/* nointr_sleep(1); */
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
modem_Close(struct physical *modem)
|
|
{
|
|
LogPrintf(LogDEBUG, "Close modem (%s)\n",
|
|
modem->fd >= 0 ? "open" : "closed");
|
|
|
|
if (modem->fd < 0)
|
|
return;
|
|
|
|
modem_Offline(modem);
|
|
|
|
if (!isatty(modem->fd)) {
|
|
modem_PhysicalClose(modem);
|
|
return;
|
|
}
|
|
|
|
if (modem->fd >= 0) {
|
|
if (force_hack ||
|
|
#ifdef notyet
|
|
!modem->is_dedicated
|
|
#else
|
|
!(mode & MODE_DEDICATED)
|
|
#endif
|
|
) {
|
|
tcflush(modem->fd, TCIOFLUSH);
|
|
modem_Unraw(modem);
|
|
modem_LogicalClose(modem);
|
|
} else {
|
|
/*
|
|
* If we are working as dedicated mode, never close it until we are
|
|
* directed to quit program.
|
|
*/
|
|
modem->mbits |= TIOCM_DTR;
|
|
ioctl(modem->fd, TIOCMSET, &modem->mbits);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
modem_Destroy(struct link *l)
|
|
{
|
|
struct physical *p;
|
|
|
|
p = link2physical(l);
|
|
if (p->fd != -1)
|
|
modem_Close(p);
|
|
free(l->name);
|
|
free(p);
|
|
}
|
|
|
|
static void
|
|
modem_LogicalClose(struct physical *modem)
|
|
{
|
|
LogPrintf(LogDEBUG, "modem_LogicalClose\n");
|
|
if (modem->fd >= 0) {
|
|
if (Utmp) {
|
|
ID0logout(VarBaseDevice);
|
|
Utmp = 0;
|
|
}
|
|
modem_PhysicalClose(modem);
|
|
modem_Unlock(modem);
|
|
}
|
|
}
|
|
|
|
static void
|
|
modem_StartOutput(struct link *l)
|
|
{
|
|
struct physical *modem = (struct physical *)l;
|
|
int nb, nw;
|
|
|
|
if (modem->out == NULL) {
|
|
if (link_QueueLen(l) == 0)
|
|
IpStartOutput(l);
|
|
|
|
modem->out = link_Dequeue(l);
|
|
}
|
|
|
|
if (modem->out) {
|
|
nb = modem->out->cnt;
|
|
nw = write(modem->fd, MBUF_CTOP(modem->out), nb);
|
|
LogPrintf(LogDEBUG, "modem_StartOutput: wrote: %d(%d) to %d\n",
|
|
nw, nb, modem->fd);
|
|
if (nw > 0) {
|
|
LogDumpBuff(LogDEBUG, "modem_StartOutput: modem write",
|
|
MBUF_CTOP(modem->out), nw);
|
|
modem->out->cnt -= nw;
|
|
modem->out->offset += nw;
|
|
if (modem->out->cnt == 0) {
|
|
modem->out = mbfree(modem->out);
|
|
LogPrintf(LogDEBUG, "modem_StartOutput: mbfree\n");
|
|
}
|
|
} else if (nw < 0) {
|
|
if (errno != EAGAIN) {
|
|
LogPrintf(LogERROR, "modem write (%d): %s\n", modem->fd,
|
|
strerror(errno));
|
|
modem->abort = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
modem_IsActive(struct link *l)
|
|
{
|
|
return ((struct physical *)l)->fd >= 0;
|
|
}
|
|
|
|
int
|
|
modem_ShowStatus(struct cmdargs const *arg)
|
|
{
|
|
const char *dev;
|
|
#ifdef TIOCOUTQ
|
|
int nb;
|
|
#endif
|
|
|
|
dev = *VarDevice ? VarDevice : "network";
|
|
|
|
prompt_Printf(&prompt, "device: %s speed: ", dev);
|
|
if (Physical_IsSync(arg->cx->physical))
|
|
prompt_Printf(&prompt, "sync\n");
|
|
else
|
|
prompt_Printf(&prompt, "%d\n", arg->cx->physical->cfg.speed);
|
|
|
|
switch (arg->cx->physical->cfg.parity & CSIZE) {
|
|
case CS7:
|
|
prompt_Printf(&prompt, "cs7, ");
|
|
break;
|
|
case CS8:
|
|
prompt_Printf(&prompt, "cs8, ");
|
|
break;
|
|
}
|
|
if (arg->cx->physical->cfg.parity & PARENB) {
|
|
if (arg->cx->physical->cfg.parity & PARODD)
|
|
prompt_Printf(&prompt, "odd parity, ");
|
|
else
|
|
prompt_Printf(&prompt, "even parity, ");
|
|
} else
|
|
prompt_Printf(&prompt, "no parity, ");
|
|
|
|
prompt_Printf(&prompt, "CTS/RTS %s.\n",
|
|
(arg->cx->physical->cfg.rts_cts ? "on" : "off"));
|
|
|
|
if (LogIsKept(LogDEBUG))
|
|
prompt_Printf(&prompt, "fd = %d, modem control = %o\n",
|
|
arg->cx->physical->fd, arg->cx->physical->mbits);
|
|
prompt_Printf(&prompt, "connect count: %d\n",
|
|
arg->cx->physical->connect_count);
|
|
#ifdef TIOCOUTQ
|
|
if (arg->cx->physical->fd >= 0)
|
|
if (ioctl(arg->cx->physical->fd, TIOCOUTQ, &nb) >= 0)
|
|
prompt_Printf(&prompt, "outq: %d\n", nb);
|
|
else
|
|
prompt_Printf(&prompt, "outq: ioctl probe failed: %s\n", strerror(errno));
|
|
#endif
|
|
prompt_Printf(&prompt, "outqlen: %d\n",
|
|
link_QueueLen(&arg->cx->physical->link));
|
|
prompt_Printf(&prompt, "DialScript = %s\n", arg->cx->cfg.script.dial);
|
|
prompt_Printf(&prompt, "LoginScript = %s\n", arg->cx->cfg.script.login);
|
|
prompt_Printf(&prompt, "PhoneNumber(s) = %s\n", arg->cx->cfg.script.hangup);
|
|
|
|
prompt_Printf(&prompt, "\n");
|
|
throughput_disp(&arg->cx->physical->link.throughput);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Dummy linker functions, to keep this quiet. Might end up a full
|
|
regression test later, right now it is just to be able to track
|
|
external symbols. */
|
|
#ifdef TESTMAIN
|
|
int main(void) {}
|
|
|
|
void LogPrintf(int i, const char *a, ...) {}
|
|
int LogIsKept(int garble) { return 0; }
|
|
int Physical_IsSync(struct physical *phys) {return 0;}
|
|
int DoChat(struct physical *a, char *b) {return 0;}
|
|
|
|
int mode;
|
|
|
|
#endif
|
|
|
|
static void
|
|
modem_DescriptorRead(struct descriptor *d, struct bundle *bundle,
|
|
const fd_set *fdset)
|
|
{
|
|
struct physical *p = descriptor2physical(d);
|
|
u_char rbuff[MAX_MRU], *cp;
|
|
int n;
|
|
|
|
LogPrintf(LogDEBUG, "descriptor2physical; %p -> %p\n", d, p);
|
|
|
|
/* something to read from modem */
|
|
if (LcpInfo.fsm.state <= ST_CLOSED)
|
|
nointr_usleep(10000);
|
|
|
|
n = Physical_Read(p, rbuff, sizeof rbuff);
|
|
if ((mode & MODE_DIRECT) && n <= 0)
|
|
link_Close(&p->link, bundle, 0, 1);
|
|
else
|
|
LogDumpBuff(LogASYNC, "ReadFromModem", rbuff, n);
|
|
|
|
if (LcpInfo.fsm.state <= ST_CLOSED) {
|
|
/* In dedicated mode, we just discard input until LCP is started */
|
|
if (!(mode & MODE_DEDICATED)) {
|
|
cp = HdlcDetect(p, rbuff, n);
|
|
if (cp) {
|
|
/* LCP packet is detected. Turn ourselves into packet mode */
|
|
if (cp != rbuff) {
|
|
/* XXX missing return value checks */
|
|
Physical_Write(p, rbuff, cp - rbuff);
|
|
Physical_Write(p, "\r\n", 2);
|
|
}
|
|
datalink_Up(bundle2datalink(bundle, p->link.name), 0, 1);
|
|
} else
|
|
prompt_Printf(&prompt, "%.*s", n, rbuff);
|
|
}
|
|
} else if (n > 0)
|
|
async_Input(bundle, rbuff, n, p);
|
|
}
|
|
|
|
static int
|
|
modem_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n)
|
|
{
|
|
return Physical_UpdateSet(d, r, w, e, n, 0);
|
|
}
|