95 lines
3.2 KiB
C
95 lines
3.2 KiB
C
/*
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* nghttp2 - HTTP/2.0 C Library
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*
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* Copyright (c) 2012 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef NGHTTP2_HELPER_H
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#define NGHTTP2_HELPER_H
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <nghttp2/nghttp2.h>
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#define nghttp2_min(A, B) ((A) < (B) ? (A) : (B))
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#define nghttp2_max(A, B) ((A) > (B) ? (A) : (B))
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/*
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* Copies 2 byte unsigned integer |n| in host byte order to |buf| in
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* network byte order.
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*/
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void nghttp2_put_uint16be(uint8_t *buf, uint16_t n);
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/*
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* Copies 4 byte unsigned integer |n| in host byte order to |buf| in
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* network byte order.
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*/
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void nghttp2_put_uint32be(uint8_t *buf, uint32_t n);
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/*
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* Retrieves 2 byte unsigned integer stored in |data| in network byte
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* order and returns it in host byte order.
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*/
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uint16_t nghttp2_get_uint16(const uint8_t *data);
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/*
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* Retrieves 4 byte unsigned integer stored in |data| in network byte
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* order and returns it in host byte order.
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*/
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uint32_t nghttp2_get_uint32(const uint8_t *data);
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/*
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* Ensures that buffer |*buf_ptr| with |*buflen_ptr| length has at
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* least |min_length| bytes. If |min_length| > |*buflen_ptr|,
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* allocates new buffer having at least |min_length| bytes and assigns
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* its pointer to |*buf_ptr| and allocated number of bytes to
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* |*buflen_ptr|. The memory pointed by |*buf_ptr| previously is
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* freed. No memory copy is done between old and new buffer.
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* |*buf_ptr| and |*buflen_ptr| are only updated iff this function
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* succeeds.
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*
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* This function returns 0 if it succeeds, or one of the following
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* negative error codes:
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*
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* NGHTTP2_ERR_NOMEM
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* Out of memory.
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*/
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int nghttp2_reserve_buffer(uint8_t **buf_ptr, size_t *buflen_ptr,
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size_t min_length);
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/*
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* Allocates |n| bytes of memory and copy the meory region pointed by
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* |src| with the length |n| bytes into it. Returns the allocated memory.
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*
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* This function returns pointer to allocated memory, or one of the
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* following negative error codes:
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*
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* NGHTTP2_ERR_NOMEM
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* Out of memory.
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*/
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void* nghttp2_memdup(const void* src, size_t n);
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void nghttp2_downcase(uint8_t *s, size_t len);
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#endif /* NGHTTP2_HELPER_H */
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