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freebsd-dev/usr.sbin/ppp/modem.c
Brian Somers fdf6117177 o Remove some unused #includes. 
o Make sure our ipcp throughput timer is stopped before being nuked
  with a memset.
o Don't initialise struct async & struct hdlc twice in modem_Create().
o Clarify some comments.
1998-04-21 01:02:32 +00:00

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/*
* PPP Modem handling module
*
* Written by Toshiharu OHNO (tony-o@iij.ad.jp)
*
* Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the Internet Initiative Japan, Inc. The name of the
* IIJ may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: modem.c,v 1.77.2.54 1998/04/20 00:20:37 brian Exp $
*
* TODO:
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/tty.h>
#include <unistd.h>
#ifdef __OpenBSD__
#else
#include <libutil.h>
#endif
#include "command.h"
#include "mbuf.h"
#include "log.h"
#include "defs.h"
#include "id.h"
#include "timer.h"
#include "fsm.h"
#include "lqr.h"
#include "hdlc.h"
#include "lcp.h"
#include "modem.h"
#include "throughput.h"
#include "async.h"
#include "iplist.h"
#include "slcompress.h"
#include "ipcp.h"
#include "filter.h"
#include "descriptor.h"
#include "ccp.h"
#include "link.h"
#include "physical.h"
#include "mp.h"
#include "bundle.h"
#include "prompt.h"
#include "chat.h"
#include "auth.h"
#include "chap.h"
#include "datalink.h"
#include "systems.h"
#ifndef O_NONBLOCK
#ifdef O_NDELAY
#define O_NONBLOCK O_NDELAY
#endif
#endif
static void modem_DescriptorWrite(struct descriptor *, struct bundle *,
const fd_set *);
static void modem_DescriptorRead(struct descriptor *, struct bundle *,
const fd_set *);
static int modem_UpdateSet(struct descriptor *, fd_set *, fd_set *, fd_set *,
int *);
struct physical *
modem_Create(struct datalink *dl, int type)
{
struct physical *p;
p = (struct physical *)malloc(sizeof(struct physical));
if (!p)
return NULL;
p->link.type = PHYSICAL_LINK;
p->link.name = dl->name;
p->link.len = sizeof *p;
throughput_init(&p->link.throughput);
memset(&p->Timer, '\0', sizeof p->Timer);
memset(p->link.Queue, '\0', sizeof p->link.Queue);
memset(p->link.proto_in, '\0', sizeof p->link.proto_in);
memset(p->link.proto_out, '\0', sizeof p->link.proto_out);
p->desc.type = PHYSICAL_DESCRIPTOR;
p->desc.UpdateSet = modem_UpdateSet;
p->desc.IsSet = Physical_IsSet;
p->desc.Read = modem_DescriptorRead;
p->desc.Write = modem_DescriptorWrite;
p->type = type;
hdlc_Init(&p->hdlc);
async_Init(&p->async);
p->fd = -1;
p->mbits = 0;
p->dev_is_modem = 0;
p->out = NULL;
p->connect_count = 0;
p->dl = dl;
*p->name.full = '\0';
p->name.base = p->name.full;
p->Utmp = 0;
p->cfg.rts_cts = MODEM_CTSRTS;
p->cfg.speed = MODEM_SPEED;
p->cfg.parity = CS8;
strncpy(p->cfg.devlist, MODEM_LIST, sizeof p->cfg.devlist - 1);
p->cfg.devlist[sizeof p->cfg.devlist - 1] = '\0';
lcp_Init(&p->link.lcp, dl->bundle, &p->link, &dl->fsmp);
ccp_Init(&p->link.ccp, dl->bundle, &p->link, &dl->fsmp);
return p;
}
/* XXX-ML this should probably change when we add support for other
types of devices */
#define Online(modem) ((modem)->mbits & TIOCM_CD)
static void modem_LogicalClose(struct physical *);
static struct speeds {
int nspeed;
speed_t speed;
} speeds[] = {
#ifdef B50
{ 50, B50, },
#endif
#ifdef B75
{ 75, B75, },
#endif
#ifdef B110
{ 110, B110, },
#endif
#ifdef B134
{ 134, B134, },
#endif
#ifdef B150
{ 150, B150, },
#endif
#ifdef B200
{ 200, B200, },
#endif
#ifdef B300
{ 300, B300, },
#endif
#ifdef B600
{ 600, B600, },
#endif
#ifdef B1200
{ 1200, B1200, },
#endif
#ifdef B1800
{ 1800, B1800, },
#endif
#ifdef B2400
{ 2400, B2400, },
#endif
#ifdef B4800
{ 4800, B4800, },
#endif
#ifdef B9600
{ 9600, B9600, },
#endif
#ifdef B19200
{ 19200, B19200, },
#endif
#ifdef B38400
{ 38400, B38400, },
#endif
#ifndef _POSIX_SOURCE
#ifdef B7200
{ 7200, B7200, },
#endif
#ifdef B14400
{ 14400, B14400, },
#endif
#ifdef B28800
{ 28800, B28800, },
#endif
#ifdef B57600
{ 57600, B57600, },
#endif
#ifdef B76800
{ 76800, B76800, },
#endif
#ifdef B115200
{ 115200, B115200, },
#endif
#ifdef B230400
{ 230400, B230400, },
#endif
#ifdef EXTA
{ 19200, EXTA, },
#endif
#ifdef EXTB
{ 38400, EXTB, },
#endif
#endif /* _POSIX_SOURCE */
{ 0, 0 }
};
static int
SpeedToInt(speed_t speed)
{
struct speeds *sp;
for (sp = speeds; sp->nspeed; sp++) {
if (sp->speed == speed) {
return (sp->nspeed);
}
}
return 0;
}
speed_t
IntToSpeed(int nspeed)
{
struct speeds *sp;
for (sp = speeds; sp->nspeed; sp++) {
if (sp->nspeed == nspeed) {
return (sp->speed);
}
}
return B0;
}
static void
modem_SetDevice(struct physical *physical, const char *name)
{
strncpy(physical->name.full, name, sizeof physical->name.full - 1);
physical->name.full[sizeof physical->name.full - 1] = '\0';
physical->name.base = strncmp(physical->name.full, "/dev/", 5) ?
physical->name.full : physical->name.full + 5;
}
/*
* modem_Timeout() watches DCD signal and notifies if it's status is changed.
*
*/
static void
modem_Timeout(void *data)
{
struct physical *modem = data;
int ombits = modem->mbits;
int change;
StopTimer(&modem->Timer);
StartTimer(&modem->Timer);
if (modem->dev_is_modem) {
if (modem->fd >= 0) {
if (ioctl(modem->fd, TIOCMGET, &modem->mbits) < 0) {
LogPrintf(LogPHASE, "ioctl error (%s)!\n", strerror(errno));
datalink_Down(modem->dl, 0);
return;
}
} else
modem->mbits = 0;
change = ombits ^ modem->mbits;
if (change & TIOCM_CD) {
if (modem->mbits & TIOCM_CD) {
LogPrintf(LogDEBUG, "modem_Timeout: offline -> online\n");
/*
* In -dedicated mode, start packet mode immediately after we've
* detected carrier.
*/
} else {
LogPrintf(LogDEBUG, "modem_Timeout: online -> offline\n");
LogPrintf(LogPHASE, "%s: Carrier lost\n", modem->link.name);
datalink_Down(modem->dl, 0);
}
}
else
LogPrintf(LogDEBUG, "modem_Timeout: Still %sline\n",
Online(modem) ? "on" : "off");
} else if (!Online(modem)) {
/* mbits was set to zero in modem_Open() */
modem->mbits = TIOCM_CD;
}
}
static void
modem_StartTimer(struct bundle *bundle, struct physical *modem)
{
struct pppTimer *ModemTimer;
ModemTimer = &modem->Timer;
StopTimer(ModemTimer);
ModemTimer->load = SECTICKS;
ModemTimer->func = modem_Timeout;
ModemTimer->name = "modem CD";
ModemTimer->arg = modem;
LogPrintf(LogDEBUG, "ModemTimer using modem_Timeout() - %p\n", modem_Timeout);
StartTimer(ModemTimer);
}
static struct parity {
const char *name;
const char *name1;
int set;
} validparity[] = {
{ "even", "P_EVEN", CS7 | PARENB },
{ "odd", "P_ODD", CS7 | PARENB | PARODD },
{ "none", "P_ZERO", CS8 },
{ NULL, 0 },
};
static int
GetParityValue(const char *str)
{
struct parity *pp;
for (pp = validparity; pp->name; pp++) {
if (strcasecmp(pp->name, str) == 0 ||
strcasecmp(pp->name1, str) == 0) {
return pp->set;
}
}
return (-1);
}
int
modem_SetParity(struct physical *modem, const char *str)
{
struct termios rstio;
int val;
val = GetParityValue(str);
if (val > 0) {
modem->cfg.parity = val;
tcgetattr(modem->fd, &rstio);
rstio.c_cflag &= ~(CSIZE | PARODD | PARENB);
rstio.c_cflag |= val;
tcsetattr(modem->fd, TCSADRAIN, &rstio);
return 0;
}
LogPrintf(LogWARN, "modem_SetParity: %s: Invalid parity\n", str);
return -1;
}
static int
OpenConnection(char *host, char *port)
{
struct sockaddr_in dest;
int sock;
struct hostent *hp;
struct servent *sp;
dest.sin_family = AF_INET;
dest.sin_addr.s_addr = inet_addr(host);
if (dest.sin_addr.s_addr == INADDR_NONE) {
hp = gethostbyname(host);
if (hp) {
memcpy(&dest.sin_addr.s_addr, hp->h_addr_list[0], 4);
} else {
LogPrintf(LogWARN, "OpenConnection: unknown host: %s\n", host);
return (-1);
}
}
dest.sin_port = htons(atoi(port));
if (dest.sin_port == 0) {
sp = getservbyname(port, "tcp");
if (sp) {
dest.sin_port = sp->s_port;
} else {
LogPrintf(LogWARN, "OpenConnection: unknown service: %s\n", port);
return (-1);
}
}
LogPrintf(LogPHASE, "Connecting to %s:%s\n", host, port);
sock = socket(PF_INET, SOCK_STREAM, 0);
if (sock < 0) {
return (sock);
}
if (connect(sock, (struct sockaddr *)&dest, sizeof dest) < 0) {
LogPrintf(LogWARN, "OpenConnection: connection failed.\n");
return (-1);
}
LogPrintf(LogDEBUG, "OpenConnection: modem fd is %d.\n", sock);
return (sock);
}
static int
modem_lock(struct physical *modem, int tunno)
{
int res;
FILE *lockfile;
char fn[MAXPATHLEN];
if (*modem->name.full != '/')
return 0;
if (modem->type != PHYS_STDIN &&
(res = ID0uu_lock(modem->name.base)) != UU_LOCK_OK) {
if (res == UU_LOCK_INUSE)
LogPrintf(LogPHASE, "Modem %s is in use\n", modem->name.full);
else
LogPrintf(LogPHASE, "Modem %s is in use: uu_lock: %s\n",
modem->name.full, uu_lockerr(res));
return (-1);
}
snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, modem->name.base);
lockfile = ID0fopen(fn, "w");
if (lockfile != NULL) {
fprintf(lockfile, "tun%d\n", tunno);
fclose(lockfile);
}
#ifndef RELEASE_CRUNCH
else
LogPrintf(LogALERT, "Warning: Can't create %s: %s\n", fn, strerror(errno));
#endif
return 0;
}
static void
modem_Unlock(struct physical *modem)
{
char fn[MAXPATHLEN];
if (*modem->name.full != '/')
return;
snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, modem->name.base);
#ifndef RELEASE_CRUNCH
if (ID0unlink(fn) == -1)
LogPrintf(LogALERT, "Warning: Can't remove %s: %s\n", fn, strerror(errno));
#else
ID0unlink(fn);
#endif
if (modem->type != PHYS_STDIN && ID0uu_unlock(modem->name.base) == -1)
LogPrintf(LogALERT, "Warning: Can't uu_unlock %s\n", fn);
}
static void
modem_Found(struct physical *modem, struct bundle *bundle)
{
throughput_start(&modem->link.throughput, "modem throughput",
Enabled(bundle, OPT_THROUGHPUT));
modem->connect_count++;
LogPrintf(LogPHASE, "Connected!\n");
}
int
modem_Open(struct physical *modem, struct bundle *bundle)
{
struct termios rstio;
int oldflag;
char *host, *port;
char *cp;
char tmpDeviceList[sizeof modem->cfg.devlist];
char *tmpDevice;
if (modem->fd >= 0)
LogPrintf(LogDEBUG, "modem_Open: Modem is already open!\n");
/* We're going back into "term" mode */
else if (modem->type == PHYS_STDIN) {
if (isatty(STDIN_FILENO)) {
LogPrintf(LogDEBUG, "modem_Open(direct): Modem is a tty\n");
modem_SetDevice(modem, ttyname(STDIN_FILENO));
if (modem_lock(modem, bundle->unit) == -1) {
close(STDIN_FILENO);
return -1;
}
modem->fd = STDIN_FILENO;
modem_Found(modem, bundle);
} else {
LogPrintf(LogDEBUG, "modem_Open(direct): Modem is not a tty\n");
modem_SetDevice(modem, "");
/* We don't call modem_Timeout() with this type of connection */
modem_Found(modem, bundle);
return modem->fd = STDIN_FILENO;
}
} else {
strncpy(tmpDeviceList, modem->cfg.devlist, sizeof tmpDeviceList - 1);
tmpDeviceList[sizeof tmpDeviceList - 1] = '\0';
for(tmpDevice=strtok(tmpDeviceList, ", "); tmpDevice && modem->fd < 0;
tmpDevice=strtok(NULL,", ")) {
modem_SetDevice(modem, tmpDevice);
if (*modem->name.full == '/') {
if (modem_lock(modem, bundle->unit) != -1) {
modem->fd = ID0open(modem->name.full, O_RDWR | O_NONBLOCK);
if (modem->fd < 0) {
LogPrintf(LogERROR, "modem_Open failed: %s: %s\n", modem->name.full,
strerror(errno));
modem_Unlock(modem);
} else {
modem_Found(modem, bundle);
LogPrintf(LogDEBUG, "modem_Open: Modem is %s\n", modem->name.full);
}
}
} else {
/* PPP over TCP */
/*
* XXX: Fix me - this should be another sort of link (similar to a
* physical
*/
cp = strchr(modem->name.full, ':');
if (cp) {
*cp = '\0';
host = modem->name.full;
port = cp + 1;
if (*host && *port) {
modem->fd = OpenConnection(host, port);
*cp = ':'; /* Don't destroy name.full */
if (modem->fd < 0)
return (-1);
modem_Found(modem, bundle);
LogPrintf(LogDEBUG, "modem_Open: Modem is socket %s\n",
modem->name.full);
} else {
*cp = ':'; /* Don't destroy name.full */
LogPrintf(LogERROR, "Invalid host:port: \"%s\"\n",
modem->name.full);
return (-1);
}
} else {
LogPrintf(LogERROR, "Device (%s) must begin with a '/' or be a"
" host:port pair\n", modem->name.full);
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 (get): fd = %d, iflag = %lx, "
"oflag = %lx, cflag = %lx\n", modem->fd, 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 (modem->type != PHYS_DEDICATED)
rstio.c_cflag |= HUPCL;
if (modem->type != PHYS_STDIN) {
/* Change tty speed when we're not in -direct mode */
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 = %lx, oflag = %lx, cflag = %lx\n",
rstio.c_iflag, rstio.c_oflag, rstio.c_cflag);
if (ioctl(modem->fd, TIOCMGET, &modem->mbits) == -1)
if (modem->type != PHYS_STDIN) {
LogPrintf(LogERROR, "modem_Open: Cannot get modem status: %s\n",
strerror(errno));
modem_LogicalClose(modem);
return (-1);
} else
modem->mbits = TIOCM_CD;
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);
}
fcntl(modem->fd, F_SETFL, oldflag & ~O_NONBLOCK);
/* We do the timer only for ttys */
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 termios rstio;
int oldflag;
LogPrintf(LogDEBUG, "Entering modem_Raw\n");
if (!isatty(modem->fd) || Physical_IsSync(modem))
return 0;
if (modem->type != PHYS_STDIN && 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 (modem->type != PHYS_DEDICATED)
rstio.c_cflag |= HUPCL;
tcsetattr(modem->fd, TCSADRAIN, &rstio);
oldflag = fcntl(modem->fd, F_GETFL, 0);
if (oldflag < 0)
return (-1);
fcntl(modem->fd, F_SETFL, oldflag | O_NONBLOCK);
modem_Timeout(modem);
return 0;
}
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;
StopTimer(&modem->Timer);
bundle_SetTtyCommandMode(modem->dl->bundle, modem->dl);
throughput_stop(&modem->link.throughput);
throughput_log(&modem->link.throughput, LogPHASE, "Modem");
}
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); */
}
LogPrintf(LogPHASE, "%s disconnected!\n", modem->link.name);
}
}
void
modem_Close(struct physical *modem)
{
if (modem->fd < 0)
return;
LogPrintf(LogDEBUG, "Close modem\n");
if (!isatty(modem->fd)) {
modem_PhysicalClose(modem);
*modem->name.full = '\0';
modem->name.base = modem->name.full;
return;
}
if (modem->fd >= 0) {
tcflush(modem->fd, TCIOFLUSH);
modem_Unraw(modem);
modem_LogicalClose(modem);
}
}
void
modem_Destroy(struct physical *modem)
{
modem_Close(modem);
free(modem);
}
static void
modem_LogicalClose(struct physical *modem)
{
LogPrintf(LogDEBUG, "modem_LogicalClose\n");
if (modem->fd >= 0) {
Physical_Logout(modem);
modem_PhysicalClose(modem);
modem_Unlock(modem);
}
*modem->name.full = '\0';
modem->name.base = modem->name.full;
}
static void
modem_DescriptorWrite(struct descriptor *d, struct bundle *bundle,
const fd_set *fdset)
{
struct physical *modem = descriptor2physical(d);
int nb, nw;
if (modem->out == NULL)
modem->out = link_Dequeue(&modem->link);
if (modem->out) {
nb = modem->out->cnt;
nw = write(modem->fd, MBUF_CTOP(modem->out), nb);
LogPrintf(LogDEBUG, "modem_DescriptorWrite: wrote: %d(%d) to %d\n",
nw, nb, modem->fd);
if (nw > 0) {
modem->out->cnt -= nw;
modem->out->offset += nw;
if (modem->out->cnt == 0)
modem->out = mbfree(modem->out);
} else if (nw < 0) {
if (errno != EAGAIN) {
LogPrintf(LogERROR, "modem write (%d): %s\n", modem->fd,
strerror(errno));
datalink_Down(modem->dl, 0);
}
}
}
}
int
modem_ShowStatus(struct cmdargs const *arg)
{
struct physical *modem = arg->cx->physical;
#ifdef TIOCOUTQ
int nb;
#endif
prompt_Printf(arg->prompt, "Name: %s\n", modem->link.name);
prompt_Printf(arg->prompt, " State: ");
if (modem->fd >= 0)
if (isatty(modem->fd))
prompt_Printf(arg->prompt, "open, %s carrier\n",
Online(modem) ? "with" : "no");
else
prompt_Printf(arg->prompt, "open\n");
else
prompt_Printf(arg->prompt, "closed\n");
prompt_Printf(arg->prompt, " Device: %s\n",
*modem->name.full ? modem->name.full :
modem->type == PHYS_STDIN ? "stdin" : "N/A");
prompt_Printf(arg->prompt, " Link Type: %s\n", mode2Nam(modem->type));
prompt_Printf(arg->prompt, " Connect Count: %d\n",
modem->connect_count);
#ifdef TIOCOUTQ
if (modem->fd >= 0 && ioctl(modem->fd, TIOCOUTQ, &nb) >= 0)
prompt_Printf(arg->prompt, " Physical outq: %d\n", nb);
#endif
prompt_Printf(arg->prompt, " Queued Packets: %d\n",
link_QueueLen(&modem->link));
prompt_Printf(arg->prompt, " Phone Number: %s\n", arg->cx->phone.chosen);
prompt_Printf(arg->prompt, "\nDefaults:\n");
prompt_Printf(arg->prompt, " Device List: %s\n", modem->cfg.devlist);
prompt_Printf(arg->prompt, " Characteristics: ");
if (Physical_IsSync(arg->cx->physical))
prompt_Printf(arg->prompt, "sync");
else
prompt_Printf(arg->prompt, "%dbps", modem->cfg.speed);
switch (modem->cfg.parity & CSIZE) {
case CS7:
prompt_Printf(arg->prompt, ", cs7");
break;
case CS8:
prompt_Printf(arg->prompt, ", cs8");
break;
}
if (modem->cfg.parity & PARENB) {
if (modem->cfg.parity & PARODD)
prompt_Printf(arg->prompt, ", odd parity");
else
prompt_Printf(arg->prompt, ", even parity");
} else
prompt_Printf(arg->prompt, ", no parity");
prompt_Printf(arg->prompt, ", CTS/RTS %s\n",
(modem->cfg.rts_cts ? "on" : "off"));
prompt_Printf(arg->prompt, "\n");
throughput_disp(&modem->link.throughput, arg->prompt);
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;}
#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;
/* something to read from modem */
if (p->link.lcp.fsm.state <= ST_CLOSED)
nointr_usleep(10000);
n = Physical_Read(p, rbuff, sizeof rbuff);
if (p->type == PHYS_STDIN && n <= 0)
datalink_Down(p->dl, 0);
else
LogDumpBuff(LogASYNC, "ReadFromModem", rbuff, n);
if (p->link.lcp.fsm.state <= ST_CLOSED) {
/* In -dedicated mode, we just discard input until LCP is started */
if (p->type != PHYS_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(p->dl, 0, 1);
} else
bundle_WriteTermPrompt(p->dl->bundle, p->dl, rbuff, n);
}
} 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);
}
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