123 lines
2.4 KiB
C
123 lines
2.4 KiB
C
/* $OpenBSD: imsg_util.c,v 1.22 2023/12/12 15:52:58 claudio Exp $ */
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/*
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* Copyright (c) 2010-2013 Reyk Floeter <reyk@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/queue.h>
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <event.h>
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#include "iked.h"
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/*
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* Extending the imsg buffer API for internal use
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*/
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struct ibuf *
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ibuf_new(const void *data, size_t len)
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{
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struct ibuf *buf;
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if ((buf = ibuf_dynamic(len,
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IKED_MSGBUF_MAX)) == NULL)
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return (NULL);
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if (len == 0)
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return (buf);
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if (data == NULL) {
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if (ibuf_add_zero(buf, len) != 0) {
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ibuf_free(buf);
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return (NULL);
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}
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} else {
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if (ibuf_add(buf, data, len) != 0) {
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ibuf_free(buf);
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return (NULL);
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}
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}
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return (buf);
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}
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struct ibuf *
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ibuf_static(void)
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{
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return ibuf_open(IKED_MSGBUF_MAX);
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}
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size_t
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ibuf_length(struct ibuf *buf)
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{
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if (buf == NULL)
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return (0);
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return (ibuf_size(buf));
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}
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struct ibuf *
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ibuf_getdata(struct ibuf *buf, size_t len)
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{
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struct ibuf tmp;
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if (ibuf_get_ibuf(buf, len, &tmp) == -1)
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return (NULL);
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return (ibuf_new(ibuf_data(&tmp), ibuf_size(&tmp)));
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}
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struct ibuf *
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ibuf_dup(struct ibuf *buf)
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{
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if (buf == NULL)
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return (NULL);
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return (ibuf_new(ibuf_data(buf), ibuf_size(buf)));
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}
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struct ibuf *
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ibuf_random(size_t len)
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{
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struct ibuf *buf;
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void *ptr;
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if ((buf = ibuf_open(len)) == NULL)
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return (NULL);
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if ((ptr = ibuf_reserve(buf, len)) == NULL) {
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ibuf_free(buf);
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return (NULL);
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}
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arc4random_buf(ptr, len);
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return (buf);
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}
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int
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ibuf_setsize(struct ibuf *buf, size_t len)
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{
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if (len > buf->size)
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return (-1);
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buf->wpos = len;
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return (0);
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}
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