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/* $OpenBSD: acu.c,v 1.17 2009/10/27 23:59:44 deraadt Exp $ */
/* $NetBSD: acu.c,v 1.4 1996/12/29 10:34:03 cgd Exp $ */
/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "tip.h"
static acu_t *acu = NULL;
static int conflag;
static void acuabort(int);
static acu_t *acutype(char *);
static jmp_buf jmpbuf;
/*
* Establish connection for tip
*
* If DU is true, we should dial an ACU whose type is AT.
* The phone numbers are in PN, and the call unit is in CU.
*
* If the PN is an '@', then we consult the PHONES file for
* the phone numbers. This file is /etc/phones, unless overridden
* by an exported shell variable.
*
* The data base files must be in the format:
* host-name[ \t]*phone-number
* with the possibility of multiple phone numbers
* for a single host acting as a rotary (in the order
* found in the file).
*/
char *
con(void)
{
char *cp = PN;
char *phnum, string[256];
FILE *fp;
volatile int tried = 0;
if (!DU) { /* regular connect message */
if (CM != NULL)
parwrite(FD, CM, size(CM));
logent(value(HOST), "", DV, "call completed");
return (NULL);
}
/*
* @ =>'s use data base in PHONES environment variable
* otherwise, use /etc/phones
*/
signal(SIGINT, acuabort);
signal(SIGQUIT, acuabort);
if (setjmp(jmpbuf)) {
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
printf("\ncall aborted\n");
logent(value(HOST), "", "", "call aborted");
if (acu != NULL) {
setboolean(value(VERBOSE), FALSE);
if (conflag)
disconnect(NULL);
else
(*acu->acu_abort)();
}
return ("interrupt");
}
if ((acu = acutype(AT)) == NULL)
return ("unknown ACU type");
if (*cp != '@') {
while (*cp) {
phnum = cp;
cp += strcspn(cp, ",");
if (*cp != '\0')
*cp++ = '\0';
if (strlen(phnum) == 0)
continue;
conflag = (*acu->acu_dialer)(phnum, CU);
if (conflag)
break;
logent(value(HOST), phnum, acu->acu_name, "call failed");
tried++;
}
} else {
if ((fp = fopen(PH, "r")) == NULL) {
printf("%s: ", PH);
return ("can't open phone number file");
}
while (fgets(string, sizeof(string), fp) != NULL) {
cp = &string[strcspn(string, " \t\n")];
if (*cp != '\0')
*cp++ = '\0';
if (strcmp(string, value(HOST)) != 0)
continue;
cp += strspn(cp, " \t\n");
phnum = cp;
*(cp + strcspn(cp, ",\n")) = '\0';
if (strlen(phnum) == 0)
continue;
conflag = (*acu->acu_dialer)(phnum, CU);
if (conflag)
break;
logent(value(HOST), phnum, acu->acu_name, "call failed");
tried++;
}
fclose(fp);
}
if (conflag) {
if (CM != NULL)
parwrite(FD, CM, size(CM));
logent(value(HOST), phnum, acu->acu_name, "call completed");
return (NULL);
} else if (!tried) {
logent(value(HOST), "", acu->acu_name, "missing phone number");
return ("missing phone number");
} else {
(*acu->acu_abort)();
return ("call failed");
}
}
void
disconnect(char *reason)
{
if (!conflag) {
logent(value(HOST), "", DV, "call terminated");
return;
}
if (reason == NULL) {
logent(value(HOST), "", acu->acu_name, "call terminated");
if (boolean(value(VERBOSE)))
printf("\r\ndisconnecting...");
} else
logent(value(HOST), "", acu->acu_name, reason);
(*acu->acu_disconnect)();
}
static void
acuabort(int s)
{
signal(s, SIG_IGN);
longjmp(jmpbuf, 1);
}
static acu_t *
acutype(char *s)
{
acu_t *p;
extern acu_t acutable[];
for (p = acutable; p->acu_name != '\0'; p++)
if (!strcmp(s, p->acu_name))
return (p);
return (NULL);
}
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