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229 lines
5.3 KiB
C
229 lines
5.3 KiB
C
/*
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* Written by Eivind Eklund <eivind@yes.no>
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* for Yes Interactive
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*
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* Copyright (C) 1998, Yes Interactive. All rights reserved.
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*
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* Redistribution and use in any form is permitted. Redistribution in
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* source form should include the above copyright and this set of
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* conditions, because large sections american law seems to have been
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* created by a bunch of jerks on drugs that are now illegal, forcing
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* me to include this copyright-stuff instead of placing this in the
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* public domain. The name of of 'Yes Interactive' or 'Eivind Eklund'
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* may not be used to endorse or promote products derived from this
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* 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: physical.c,v 1.3 1998/05/23 22:24:47 brian Exp $
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*
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*/
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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 <time.h>
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#include <unistd.h>
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#include <utmp.h>
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#include <sys/tty.h>
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#include "defs.h"
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#include "mbuf.h"
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#include "timer.h"
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#include "lqr.h"
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#include "hdlc.h"
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#include "throughput.h"
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#include "fsm.h"
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#include "lcp.h"
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#include "async.h"
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#include "ccp.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 "log.h"
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#include "id.h"
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/* External calls - should possibly be moved inline */
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extern int IntToSpeed(int);
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int
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physical_GetFD(struct physical *phys) {
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return phys->fd;
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}
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int
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physical_IsATTY(struct physical *phys) {
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return isatty(phys->fd);
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}
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int
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physical_IsSync(struct physical *phys) {
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return phys->cfg.speed == 0;
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}
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const char *physical_GetDevice(struct physical *phys)
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{
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return phys->name.full;
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}
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void
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physical_SetDeviceList(struct physical *p, int argc, const char *const *argv)
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{
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int f, pos;
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p->cfg.devlist[sizeof p->cfg.devlist - 1] = '\0';
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for (f = 0, pos = 0; f < argc && pos < sizeof p->cfg.devlist - 1; f++) {
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if (pos)
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p->cfg.devlist[pos++] = ' ';
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strncpy(p->cfg.devlist + pos, argv[f], sizeof p->cfg.devlist - pos - 1);
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pos += strlen(p->cfg.devlist + pos);
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}
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}
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int
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physical_SetSpeed(struct physical *phys, int speed) {
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if (IntToSpeed(speed) != B0) {
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phys->cfg.speed = speed;
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return 1;
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} else {
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return 0;
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}
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}
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void
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physical_SetSync(struct physical *phys) {
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phys->cfg.speed = 0;
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}
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int
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physical_SetRtsCts(struct physical *phys, int enable) {
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phys->cfg.rts_cts = enable ? 1 : 0;
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return 1;
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}
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/* Encapsulation for a read on the FD. Avoids some exposure, and
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concentrates control. */
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ssize_t
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physical_Read(struct physical *phys, void *buf, size_t nbytes) {
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return read(phys->fd, buf, nbytes);
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}
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ssize_t
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physical_Write(struct physical *phys, const void *buf, size_t nbytes) {
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return write(phys->fd, buf, nbytes);
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}
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int
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physical_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e,
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int *n, int force)
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{
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struct physical *p = descriptor2physical(d);
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int sets;
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sets = 0;
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if (p->fd >= 0) {
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if (r) {
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FD_SET(p->fd, r);
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log_Printf(LogTIMER, "%s: fdset(r) %d\n", p->link.name, p->fd);
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sets++;
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}
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if (e) {
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FD_SET(p->fd, e);
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log_Printf(LogTIMER, "%s: fdset(e) %d\n", p->link.name, p->fd);
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sets++;
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}
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if (w && (force || link_QueueLen(&p->link) || p->out)) {
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FD_SET(p->fd, w);
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log_Printf(LogTIMER, "%s: fdset(w) %d\n", p->link.name, p->fd);
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sets++;
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}
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if (sets && *n < p->fd + 1)
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*n = p->fd + 1;
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}
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return sets;
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}
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int
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physical_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e)
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{
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int sets;
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sets = 0;
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if (p->fd >= 0) {
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if (r && FD_ISSET(p->fd, r)) {
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FD_CLR(p->fd, r);
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log_Printf(LogTIMER, "%s: fdunset(r) %d\n", p->link.name, p->fd);
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sets++;
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}
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if (e && FD_ISSET(p->fd, e)) {
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FD_CLR(p->fd, e);
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log_Printf(LogTIMER, "%s: fdunset(e) %d\n", p->link.name, p->fd);
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sets++;
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}
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if (w && FD_ISSET(p->fd, w)) {
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FD_CLR(p->fd, w);
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log_Printf(LogTIMER, "%s: fdunset(w) %d\n", p->link.name, p->fd);
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sets++;
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}
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}
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return sets;
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}
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int
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physical_IsSet(struct descriptor *d, const fd_set *fdset)
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{
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struct physical *p = descriptor2physical(d);
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return p->fd >= 0 && FD_ISSET(p->fd, fdset);
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}
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void
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physical_Login(struct physical *phys, const char *name)
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{
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if (phys->type == PHYS_DIRECT && physical_IsATTY(phys)) {
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if (phys->Utmp)
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log_Printf(LogERROR, "Oops, already logged in on %s\n", phys->name.base);
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else {
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struct utmp ut;
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const char *connstr;
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memset(&ut, 0, sizeof ut);
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time(&ut.ut_time);
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strncpy(ut.ut_name, name, sizeof ut.ut_name);
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strncpy(ut.ut_line, phys->name.base, sizeof ut.ut_line);
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if ((connstr = getenv("CONNECT")))
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/* mgetty sets this to the connection speed */
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strncpy(ut.ut_host, connstr, sizeof ut.ut_host);
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ID0login(&ut);
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phys->Utmp = 1;
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}
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}
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}
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void
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physical_Logout(struct physical *phys)
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{
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if (phys->Utmp) {
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ID0logout(phys->name.base);
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phys->Utmp = 0;
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}
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}
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int
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physical_SetMode(struct physical *p, int mode)
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{
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if (p->type & (PHYS_DIRECT|PHYS_DEDICATED)
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|| mode & (PHYS_DIRECT|PHYS_DEDICATED)) {
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log_Printf(LogWARN, "%s: Cannot change mode %s to %s\n", p->link.name,
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mode2Nam(p->type), mode2Nam(mode));
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return 0;
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}
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p->type = mode;
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return 1;
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}
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