2007-02-08 16:47:06 +00:00
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/*
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* util/net_help.h - network help functions
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*
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* Copyright (c) 2007, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* This file contains functions to perform network related tasks.
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*/
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#ifndef NET_HELP_H
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#define NET_HELP_H
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2007-04-03 09:29:09 +00:00
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/** DNS constants for uint16_t style flag manipulation. host byteorder. */
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/** AA flag */
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#define BIT_AA 0x0400
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/** RD flag */
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#define BIT_RD 0x0100
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/** CD flag */
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#define BIT_CD 0x0010
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/** QR flag */
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#define BIT_QR 0x8000
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2007-02-08 16:47:06 +00:00
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/**
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* See if string is ip4 or ip6.
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* @param str: IP specification.
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* @return: true if string addr is an ip6 specced address.
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*/
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int str_is_ip6(const char* str);
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2007-02-26 14:49:11 +00:00
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/**
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* Write (blocking) to a nonblocking socket.
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* @param s: fd.
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* @param buf: data buffer.
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* @param size: length of data to send.
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* @return: 0 on error. errno is set.
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*/
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int
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write_socket(int s, const void *buf, size_t size);
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2007-03-01 15:50:57 +00:00
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/**
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* Set fd nonblocking.
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* @param s: file descriptor.
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* @return: 0 on error (error is printed to log).
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*/
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int fd_set_nonblock(int s);
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2007-03-26 10:33:41 +00:00
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/**
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* See if number is a power of 2.
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* @param num: the value.
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* @return: true if the number is a power of 2.
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*/
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int is_pow2(size_t num);
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2007-04-17 14:03:33 +00:00
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/**
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* Write iov vector into a buffer.
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* @param buffer: to write data into.
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* @param iov: iov vector
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* @param iovlen: length of iov vector
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*/
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void write_iov_buffer(ldns_buffer* buffer, struct iovec* iov, size_t iovlen);
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2007-02-08 16:47:06 +00:00
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#endif /* NET_HELP_H */
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