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/*-
* tirc -- client for the Internet Relay Chat
*
* Copyright (c) 1996, 1997, 1998
* Matthias Buelow. All rights reserved.
*
* See the file ``COPYRIGHT'' for the usage and distribution
* license and warranty disclaimer.
*/
#ifndef lint
static char rcsid[] = "$Id: system.c,v 1.14 1998/02/02 03:41:29 mkb Exp $";
#endif
#include "tirc.h"
#ifdef HAVE_STRING_H
#include <string.h>
#elif defined(HAVE_MEMORY_H)
#include <memory.h>
#endif
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#include "compat.h"
#include "tty.h"
#include "colour.h"
struct pmsg_entry {
char *pme_target;
char *pme_text;
TAILQ_ENTRY(pmsg_entry) pme_entries;
};
extern int errno;
extern char ppre[];
int syspipe;
int systempid;
char *s_target;
TAILQ_HEAD(, pmsg_entry) pmsg_list;
/*
* Initialize this layer.
*/
void
init_system()
{
syspipe = 0;
TAILQ_INIT(&pmsg_list);
}
/*
* Forks, calls a process in background and attaches its output to a pipe
* which will be read in doirc() and copied into the current window.
*/
void
irc_system(cmd)
char *cmd;
{
int pfd[2];
char *shell;
static char sh[] = "/bin/sh";
char *s_cmd;
if (cmd == NULL || !strlen(cmd))
return;
if (syspipe > 0) {
iw_printf(COLI_TEXT, "%sYou've already a process running, \
multiple processes are not supported\n", ppre);
return;
}
/* Output is routed to irc? */
if (!strncmp(cmd, "-msg ", 5)) {
s_target = chkmem(Strdup(strtok(skipws(cmd+4), " \t")));
s_cmd = strtok(NULL, "");
if (s_target == NULL || s_cmd == NULL) {
iw_printf(COLI_TEXT, "%sNot enough parameters\n", ppre);
if (s_target != NULL)
free(s_target);
return;
}
}
else {
s_target = NULL;
s_cmd = cmd;
}
if (pipe(pfd) < 0) {
iw_printf(COLI_WARN, "%s%sCannot create pipe: %s%s\n", TBOLD,
ppre, Strerror(errno), TBOLD);
free(s_target);
return;
}
if (dg_allocbuffer(pfd[0]) < 0) {
iw_printf(COLI_WARN, "%s%sdg_allocbuffer failed, closing \
pipe%s\n", TBOLD, ppre, TBOLD);
close(pfd[0]);
close(pfd[1]);
free(s_target);
return;
}
syspipe = pfd[0];
if ((systempid = fork()) < 0) {
iw_printf(COLI_WARN, "%s%sCannot fork(): %s%s\n", TBOLD, ppre,
Strerror(errno), TBOLD);
free(s_target);
return;
}
else if (!systempid) {
/* Executing child process. */
close(pfd[0]);
dup2(pfd[1], STDOUT_FILENO);
dup2(pfd[1], STDERR_FILENO);
close(pfd[1]);
shell = getenv("SHELL");
if (shell == NULL)
shell = sh;
execl(shell, shell, "-c", s_cmd, NULL);
fprintf(stderr, "Cannot execl() %s: %s\n", shell,
Strerror(errno));
_exit(-1);
}
/* Parent process. */
close(pfd[1]);
iw_printf(COLI_TEXT, "%sforked: %d\n", ppre, systempid);
}
/*
* Send the specified signal to the spawned background process.
*/
void
irc_kill(sig)
int sig;
{
if (syspipe > 0) {
if (kill(systempid, sig) < 0)
iw_printf(COLI_WARN, "%sKilling process %d with \
signal %d failed: %s\n", ppre, systempid, sig, Strerror(errno));
}
else
iw_printf(COLI_TEXT, "%sNo spawned process\n", ppre);
}
void
system_printline(line)
char *line;
{
struct iw_msg msg;
if (s_target == NULL) {
msg.iwm_text = line;
msg.iwm_type = IMT_CTRL;
msg.iwm_chn = NULL;
msg.iwm_chint = COLI_TEXT;
dispose_msg(&msg);
}
else {
/* Store on outgoing privmsgs list */
struct pmsg_entry *pme = chkmem(malloc(sizeof *pme));
pme->pme_target = chkmem(Strdup(s_target));
pme->pme_text = chkmem(Strdup(line));
TAILQ_INSERT_TAIL(&pmsg_list, pme, pme_entries);
}
}
/*
* Return the status of the pmsg queue.
*/
int
system_out_waiting()
{
return (pmsg_list.tqh_first != NULL);
}
/*
* Send the next waiting privmsg from the queue if at least 1 second
* passed since last call and add an additional delay every 10 lines.
*/
void
system_sendpmsg()
{
struct pmsg_entry *pme = pmsg_list.tqh_first;
time_t now = time(NULL);
static time_t last;
static int numl;
if (pme != NULL && now > last) {
privmsg(pme->pme_target, pme->pme_text, 0);
free(pme->pme_text);
free(pme->pme_target);
TAILQ_REMOVE(&pmsg_list, pme, pme_entries);
free(pme);
last = now;
if (++numl > 10) {
numl = 0;
last += 3; /* 3 sec delay */
}
}
}
/*
* Clear the queue.
*/
void
system_dequeue()
{
struct pmsg_entry *pme, *pme_next;
for (pme = pmsg_list.tqh_first; pme != NULL; pme = pme_next) {
pme_next = pme->pme_entries.tqe_next;
free(pme->pme_target);
free(pme->pme_text);
TAILQ_REMOVE(&pmsg_list, pme, pme_entries);
free(pme);
}
TAILQ_INIT(&pmsg_list);
}
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