emehta-contrib/os_testproc.c

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2012-04-17 20:09:50 +00:00
/*
* Copyright (c) 2009 Jilles Tjoelker, et al
* Rights to this code are as documented in doc/LICENSE.
*
* Reads data from a child process via a pipe.
*/
#include "atheme.h"
#include "datastream.h"
#ifndef _WIN32
DECLARE_MODULE_V1
(
"contrib/os_testproc", false, _modinit, _moddeinit,
PACKAGE_STRING,
"Atheme Development Group <http://www.atheme.org>"
);
struct testprocdata
{
char dest[NICKLEN];
connection_t *pip;
};
static struct testprocdata procdata;
static void os_cmd_testproc(sourceinfo_t *si, int parc, char *parv[]);
command_t os_testproc = { "TESTPROC", "Does something with child processes.",
AC_NONE, 0, os_cmd_testproc, { .path = "contrib/testproc" } };
void _modinit(module_t *m)
{
service_named_bind_command("operserv", &os_testproc);
}
void _moddeinit(module_unload_intent_t intent)
{
if (procdata.pip != NULL)
connection_close_soon(procdata.pip);
service_named_unbind_command("operserv", &os_testproc);
}
static void testproc_recvqhandler(connection_t *cptr)
{
char buf[BUFSIZE];
int count;
user_t *u;
if (cptr != procdata.pip)
{
slog(LG_INFO, "testproc_recvqhandler(): called with unexpected fd %d", cptr->fd);
return;
}
count = recvq_getline(cptr, buf, sizeof buf - 1);
if (count <= 0)
return;
if (buf[count - 1] == '\n')
count--;
if (count > 0 && buf[count - 1] == '\r')
count--;
if (count == 0)
buf[count++] = ' ';
buf[count] = '\0';
u = user_find(procdata.dest);
if (u != NULL)
notice(service_find("operserv")->me->nick, u->nick, "%s", buf);
}
static void testproc_closehandler(connection_t *cptr)
{
if (cptr != procdata.pip)
{
slog(LG_INFO, "testproc_closehandler(): called with unexpected fd %d", cptr->fd);
return;
}
slog(LG_DEBUG, "testproc_closehandler(): fd %d closed", cptr->fd);
procdata.pip = NULL;
}
static void os_cmd_testproc(sourceinfo_t *si, int parc, char *parv[])
{
int pipes[2];
if (si->su == NULL)
{
command_fail(si, fault_noprivs, _("\2%s\2 can only be executed via IRC."), "TESTPROC");
return;
}
if (procdata.pip != NULL)
{
command_fail(si, fault_toomany, "Another TESTPROC is still in progress");
return;
}
if (pipe(pipes) == -1)
{
command_fail(si, fault_toomany, "Failed to create pipe");
return;
}
switch (fork())
{
case -1:
close(pipes[0]);
close(pipes[1]);
command_fail(si, fault_toomany, "Failed to fork");
return;
case 0:
connection_close_all_fds();
close(pipes[0]);
dup2(pipes[1], 1);
dup2(pipes[1], 2);
close(pipes[1]);
execl("/bin/sh", "sh", "-c", "echo hi; sleep 1; echo hi 2; sleep 0.5; echo hi 3; sleep 4; echo hi 4", (char *)NULL);
(void)write(2, "Failed to exec /bin/sh\n", 23);
_exit(255);
break;
default:
close(pipes[1]);
procdata.pip = connection_add("testproc pipe", pipes[0], 0, recvq_put, NULL);
procdata.pip->recvq_handler = testproc_recvqhandler;
procdata.pip->close_handler = testproc_closehandler;
mowgli_strlcpy(procdata.dest, CLIENT_NAME(si->su), sizeof procdata.dest);
break;
}
}
#endif
/* vim:cinoptions=>s,e0,n0,f0,{0,}0,^0,=s,ps,t0,c3,+s,(2s,us,)20,*30,gs,hs
* vim:ts=8
* vim:sw=8
* vim:noexpandtab
*/