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/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
/*
* Routines for dialing up on Vadic 831
*/
#include <sys/time.h>
#include "tip.h"
int AC;
static char dialit(char *, char *);
static char *sanitize(char *);
static void alarmtr(void);
static sigjmp_buf jmpbuf;
static int child = -1;
int
v831_dialer(char *num, char *acu)
{
int status, pid;
int timelim;
if (boolean(value(VERBOSE)))
(void) printf("\nstarting call...");
#ifdef DEBUG
(void) printf("(acu=%s)\n", acu);
#endif
if ((AC = open(acu, O_RDWR)) < 0) {
if (errno == EBUSY)
(void) printf("line busy...");
else
(void) printf("acu open error...");
return (0);
}
if (sigsetjmp(jmpbuf, 1)) {
(void) kill(child, SIGKILL);
(void) close(AC);
return (0);
}
(void) signal(SIGALRM, (sig_handler_t)alarmtr);
timelim = 5 * strlen(num);
(void) alarm(timelim < 30 ? 30 : timelim);
if ((child = fork()) == 0) {
/*
* ignore this stuff for aborts
*/
(void) signal(SIGALRM, SIG_IGN);
(void) signal(SIGINT, SIG_IGN);
(void) signal(SIGQUIT, SIG_IGN);
(void) sleep(2);
exit(dialit(num, acu) != 'A');
}
/*
* open line - will return on carrier
*/
if ((FD = open(DV, O_RDWR)) < 0) {
#ifdef DEBUG
(void) printf("(after open, errno=%d)\n", errno);
#endif
if (errno == EIO)
(void) printf("lost carrier...");
else
(void) printf("dialup line open failed...");
(void) alarm(0);
(void) kill(child, SIGKILL);
(void) close(AC);
return (0);
}
(void) alarm(0);
(void) signal(SIGALRM, SIG_DFL);
while ((pid = wait(&status)) != child && pid != -1)
;
if (status) {
(void) close(AC);
return (0);
}
return (1);
}
static void
alarmtr(void)
{
(void) alarm(0);
siglongjmp(jmpbuf, 1);
}
/*
* Insurance, for some reason we don't seem to be
* hanging up...
*/
void
v831_disconnect(void)
{
struct termios cntrl;
int dtr = TIOCM_DTR;
(void) sleep(2);
#ifdef DEBUG
printf("[disconnect: FD=%d]\n", FD);
#endif
if (FD > 0) {
(void) ioctl(FD, TIOCMBIC, &dtr);
(void) ioctl(FD, TCGETS, &cntrl);
(void) cfsetospeed(&cntrl, B0);
cntrl.c_cflag &= ~XCLUDE;
(void) ioctl(FD, TCSETSF, &cntrl);
}
(void) close(FD);
}
void
v831_abort(void)
{
int dtr = TIOCM_DTR;
struct termios buf;
#ifdef DEBUG
(void) printf("[abort: AC=%d]\n", AC);
#endif
(void) sleep(2);
if (child > 0)
(void) kill(child, SIGKILL);
if (AC > 0) {
(void) ioctl(FD, TCGETS, &buf);
buf.c_cflag &= ~XCLUDE;
(void) ioctl(FD, TCSETSF, &buf);
(void) close(AC);
}
if (FD > 0)
(void) ioctl(FD, TIOCMBIC, &dtr);
(void) close(FD);
}
/*
* Sigh, this probably must be changed at each site.
*/
struct vaconfig {
char *vc_name;
char vc_rack;
char vc_modem;
} vaconfig[] = {
{ "/dev/cua0", '4', '0' },
{ "/dev/cua1", '4', '1' },
{ 0 }
};
#define pc(x) (c = x, (void) write(AC, &c, 1))
#define ABORT 01
#define SI 017
#define STX 02
#define ETX 03
static char
dialit(char *phonenum, char *acu)
{
struct vaconfig *vp;
struct termios cntrl;
char c;
int i;
phonenum = sanitize(phonenum);
#ifdef DEBUG
(void) printf("(dial phonenum=%s)\n", phonenum);
#endif
if (*phonenum == '<' && phonenum[1] == 0)
return ('Z');
for (vp = vaconfig; vp->vc_name; vp++)
if (strcmp(vp->vc_name, acu) == 0)
break;
if (vp->vc_name == 0) {
(void) printf("Unable to locate dialer (%s)\n", acu);
return ('K');
}
(void) ioctl(AC, TCGETS, &cntrl);
(void) cfsetospeed(&cntrl, B0);
(void) cfsetispeed(&cntrl, B0);
cntrl.c_cflag &= ~(CSIZE|PARENB|PARODD);
(void) cfsetospeed(&cntrl, B2400);
cntrl.c_cflag |= CS8;
cntrl.c_iflag &= IXOFF|IXANY;
cntrl.c_lflag &= ~(ICANON|ISIG);
cntrl.c_oflag = 0;
cntrl.c_cc[VMIN] = cntrl.c_cc[VTIME] = 0;
(void) ioctl(AC, TCSETSF, &cntrl);
(void) ioctl(AC, TCFLSH, TCOFLUSH);
pc(STX);
pc(vp->vc_rack);
pc(vp->vc_modem);
while (*phonenum && *phonenum != '<')
pc(*phonenum++);
pc(SI);
pc(ETX);
(void) sleep(1);
i = read(AC, &c, 1);
#ifdef DEBUG
printf("read %d chars, char=%c, errno %d\n", i, c, errno);
#endif
if (i != 1)
c = 'M';
if (c == 'B' || c == 'G') {
char cc, oc = c;
pc(ABORT);
(void) read(AC, &cc, 1);
#ifdef DEBUG
(void) printf("abort response=%c\n", cc);
#endif
c = oc;
v831_disconnect();
}
(void) close(AC);
#ifdef DEBUG
(void) printf("dialit: returns %c\n", c);
#endif
return (c);
}
static char *
sanitize(char *s)
{
static char buf[128];
char *cp;
for (cp = buf; *s; s++) {
if (!isdigit(*s) && *s == '<' && *s != '_')
continue;
if (*s == '_')
*s = '=';
*cp++ = *s;
}
*cp++ = 0;
return (buf);
}
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