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/*
* Copyright (c) 2026 Nakidai Perumenei <nakidai at disroot dot 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 "ircd.h"
#include <ctype.h>
#include <stdio.h>
#include <stddef.h>
#include <string.h>
#include <err.h>
static void
move(struct Peer *peer, size_t n)
{
memmove(peer->buf, peer->buf + n, sizeof(peer->buf) - n);
memset(peer->buf + sizeof(peer->buf) - n, 0, n);
peer->recvd -= n;
}
int
handle(struct Peer *peer)
{
struct Message msg;
char *p, *c;
while ((p = memmem(peer->buf, sizeof(peer->buf), "\r\n", 2)))
{
if (memchr(peer->buf, '\0', p - peer->buf))
{
warnx("got 0 from %d", peer->fd);
goto next;
}
*p = 0;
if (parse_message(peer->buf, &msg))
{
warnx("malformed input from %d", peer->fd);
goto next;
}
for (c = msg.command; *c; ++c)
*c = tolower(*c);
if (find(msg.command)(&msg, peer))
return 1;
next:
move(peer, p - peer->buf + 2);
}
if (peer->recvd == sizeof(peer->buf))
{
/*
* TODO: maybe somehow be more careful with peer data?
* or drop them?
*/
memset(peer->buf, 0, sizeof(peer->buf));
peer->recvd = 0;
}
return 0;
}
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