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66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/*-
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* SSLsplit - transparent SSL/TLS interception
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* https://www.roe.ch/SSLsplit
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*
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* Copyright (c) 2009-2019, Daniel Roethlisberger <daniel@roe.ch>.
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* All rights reserved.
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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 are met:
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* 1. 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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* 2. 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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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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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#include <string.h>
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/*
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* Various utility functions.
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*/
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/*
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* Returns a pointer to the first non-whitespace character in s.
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* Only space and tab characters are considered whitespace.
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*/
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char *
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util_skipws(const char *s)
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{
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return (char*) s + strspn(s, " \t");
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}
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/*
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* Returns the length of the first word in a given memory area.
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* Memory area may not be null-terminated, hence we cannot use string
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* manipulation functions.
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*/
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size_t
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util_get_first_word_len(char *mem, size_t size)
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{
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char *end;
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// @attention The detection order of ws chars is important: space, tab, cr, and nl
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if ((end = memchr(mem, ' ', size)) ||
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(end = memchr(mem, '\t', size)) ||
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(end = memchr(mem, '\r', size)) ||
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(end = memchr(mem, '\n', size)) ||
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(end = memchr(mem, '\0', size))) {
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return (size_t)(end - mem);
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}
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return size;
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}
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/* vim: set noet ft=c: */
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