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/*-
* Copyright 2012 Matthew Endsley
* All rights reserved
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted providing that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef HTTP_HTTP_H
#define HTTP_HTTP_H
#if defined(__cplusplus)
extern "C" {
#endif
/**
* Callbacks for handling response data.
* realloc_scratch - reallocate memory, cannot fail. There will only
* be one scratch buffer. Implemnentation may take
* advantage of this fact.
* body - handle HTTP response body data
* header - handle an HTTP header key/value pair
* code - handle the HTTP status code for the response
*/
struct http_funcs {
void* (*realloc_scratch)(void* opaque, void* ptr, int size);
void (*body)(void* opaque, const char* data, int size);
void (*header)(void* opaque, const char* key, int nkey, const char* value, int nvalue);
void (*code)(void* opqaue, int code);
};
struct http_roundtripper {
struct http_funcs funcs;
void *opaque;
char *scratch;
int code;
int parsestate;
int contentlength;
int state;
int nscratch;
int nkey;
int nvalue;
int chunked;
};
/**
* Initializes a rountripper with the specified response functions. This must
* be called before the rt object is used.
*/
void http_init(struct http_roundtripper* rt, struct http_funcs, void* opaque);
/**
* Frees any scratch memory allocated during parsing.
*/
void http_free(struct http_roundtripper* rt);
/**
* Parses a block of HTTP response data. Returns zero if the parser reached the
* end of the response, or an error was encountered. Use http_iserror to check
* for the presence of an error. Returns non-zero if more data is required for
* the response.
*/
int http_data(struct http_roundtripper* rt, const char* data, int size, int* read);
/**
* Returns non-zero if a completed parser encounted an error. If http_data did
* not return non-zero, the results of this function are undefined.
*/
int http_iserror(struct http_roundtripper* rt);
#if defined(__cplusplus)
}
#endif
#endif
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