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/* $OpenBSD: check_send_expect.c,v 1.2 2007/01/08 20:46:18 reyk Exp $ */
/*
* Copyright (c) 2006 Pierre-Yves Ritschard <pyr@spootnik.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/param.h>
#include <net/if.h>
#include <limits.h>
#include <event.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <fnmatch.h>
#include "hostated.h"
void se_validate(struct ctl_tcp_event *);
void se_read(int, short, void *);
void
se_validate(struct ctl_tcp_event *cte)
{
u_char *b;
/*
* ensure string is nul-terminated.
*/
b = buf_reserve(cte->buf, 1);
if (b == NULL)
fatal("out of memory");
*b = '\0';
if (fnmatch(cte->table->exbuf, cte->buf->buf, 0) == 0)
cte->host->up = HOST_UP;
else
cte->host->up = HOST_DOWN;
/*
* go back to original position.
*/
cte->buf->wpos--;
}
void
se_read(int s, short event, void *arg)
{
ssize_t br;
char rbuf[SMALL_READ_BUF_SIZE];
struct timeval tv;
struct timeval tv_now;
struct ctl_tcp_event *cte = arg;
if (event == EV_TIMEOUT) {
cte->host->up = HOST_DOWN;
buf_free(cte->buf);
hce_notify_done(cte->host, "se_read: timeout");
return;
}
br = read(s, rbuf, sizeof(rbuf));
log_debug("se_read: %d bytes read", br);
if (br == 0) {
cte->host->up = HOST_DOWN;
se_validate(cte);
buf_free(cte->buf);
hce_notify_done(cte->host, "se_read: connection closed");
} else if (br == -1) {
cte->host->up = HOST_DOWN;
buf_free(cte->buf);
hce_notify_done(cte->host, "se_read: read failed");
} else {
buf_add(cte->buf, rbuf, br);
bcopy(&cte->table->timeout, &tv, sizeof(tv));
if (gettimeofday(&tv_now, NULL))
fatal("se_read: gettimeofday");
timersub(&tv_now, &cte->tv_start, &tv_now);
timersub(&tv, &tv_now, &tv);
se_validate(cte);
if (cte->host->up == HOST_UP) {
buf_free(cte->buf);
hce_notify_done(cte->host, NULL);
} else
event_once(s, EV_READ|EV_TIMEOUT, se_read, cte, &tv);
}
}
void
start_send_expect(struct ctl_tcp_event *cte)
{
int bs;
int pos;
int len;
char *req;
struct timeval tv;
struct timeval tv_now;
req = cte->table->sendbuf;
pos = 0;
len = strlen(req);
if (len) {
do {
bs = write(cte->s, req + pos, len);
if (bs <= 0) {
log_warnx("send_se_data: cannot send");
cte->host->up = HOST_DOWN;
hce_notify_done(cte->host,
"start_send_expect: write");
return;
}
pos += bs;
len -= bs;
} while (len > 0);
}
if ((cte->buf = buf_dynamic(SMALL_READ_BUF_SIZE, UINT_MAX)) == NULL)
fatalx("send_se_data: cannot create dynamic buffer");
log_debug("start_send_expect: reading");
bcopy(&cte->table->timeout, &tv, sizeof(tv));
if (gettimeofday(&tv_now, NULL))
fatal("start_send_expect: gettimeofday");
timersub(&tv_now, &cte->tv_start, &tv_now);
timersub(&tv, &tv_now, &tv);
event_once(cte->s, EV_READ|EV_TIMEOUT, se_read, cte, &tv);
}
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