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/* $OpenBSD: imsg_util.c,v 1.22 2023/12/12 15:52:58 claudio Exp $ */
/*
* Copyright (c) 2010-2013 Reyk Floeter <reyk@openbsd.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/queue.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <event.h>
#include "iked.h"
/*
* Extending the imsg buffer API for internal use
*/
struct ibuf *
ibuf_new(const void *data, size_t len)
{
struct ibuf *buf;
if ((buf = ibuf_dynamic(len,
IKED_MSGBUF_MAX)) == NULL)
return (NULL);
if (len == 0)
return (buf);
if (data == NULL) {
if (ibuf_add_zero(buf, len) != 0) {
ibuf_free(buf);
return (NULL);
}
} else {
if (ibuf_add(buf, data, len) != 0) {
ibuf_free(buf);
return (NULL);
}
}
return (buf);
}
struct ibuf *
ibuf_static(void)
{
return ibuf_open(IKED_MSGBUF_MAX);
}
size_t
ibuf_length(struct ibuf *buf)
{
if (buf == NULL)
return (0);
return (ibuf_size(buf));
}
struct ibuf *
ibuf_getdata(struct ibuf *buf, size_t len)
{
struct ibuf tmp;
if (ibuf_get_ibuf(buf, len, &tmp) == -1)
return (NULL);
return (ibuf_new(ibuf_data(&tmp), ibuf_size(&tmp)));
}
struct ibuf *
ibuf_dup(struct ibuf *buf)
{
if (buf == NULL)
return (NULL);
return (ibuf_new(ibuf_data(buf), ibuf_size(buf)));
}
struct ibuf *
ibuf_random(size_t len)
{
struct ibuf *buf;
void *ptr;
if ((buf = ibuf_open(len)) == NULL)
return (NULL);
if ((ptr = ibuf_reserve(buf, len)) == NULL) {
ibuf_free(buf);
return (NULL);
}
arc4random_buf(ptr, len);
return (buf);
}
int
ibuf_setsize(struct ibuf *buf, size_t len)
{
if (len > buf->size)
return (-1);
buf->wpos = len;
return (0);
}
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