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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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 GRPC_CORE_LIB_HTTP_PARSER_H
#define GRPC_CORE_LIB_HTTP_PARSER_H
#include <grpc/slice.h>
#include <grpc/support/port_platform.h>
#include "src/core/lib/debug/trace.h"
#include "src/core/lib/iomgr/error.h"
/* Maximum length of a header string of the form 'Key: Value\r\n' */
#define GRPC_HTTP_PARSER_MAX_HEADER_LENGTH 4096
/* A single header to be passed in a request */
typedef struct grpc_http_header {
char *key;
char *value;
} grpc_http_header;
typedef enum {
GRPC_HTTP_FIRST_LINE,
GRPC_HTTP_HEADERS,
GRPC_HTTP_BODY
} grpc_http_parser_state;
typedef enum {
GRPC_HTTP_HTTP10,
GRPC_HTTP_HTTP11,
GRPC_HTTP_HTTP20,
} grpc_http_version;
typedef enum {
GRPC_HTTP_RESPONSE,
GRPC_HTTP_REQUEST,
} grpc_http_type;
/* A request */
typedef struct grpc_http_request {
/* Method of the request (e.g. GET, POST) */
char *method;
/* The path of the resource to fetch */
char *path;
/* HTTP version to use */
grpc_http_version version;
/* Headers attached to the request */
size_t hdr_count;
grpc_http_header *hdrs;
/* Body: length and contents; contents are NOT null-terminated */
size_t body_length;
char *body;
} grpc_http_request;
/* A response */
typedef struct grpc_http_response {
/* HTTP status code */
int status;
/* Headers: count and key/values */
size_t hdr_count;
grpc_http_header *hdrs;
/* Body: length and contents; contents are NOT null-terminated */
size_t body_length;
char *body;
} grpc_http_response;
typedef struct {
grpc_http_parser_state state;
grpc_http_type type;
union {
grpc_http_response *response;
grpc_http_request *request;
void *request_or_response;
} http;
size_t body_capacity;
size_t hdr_capacity;
uint8_t cur_line[GRPC_HTTP_PARSER_MAX_HEADER_LENGTH];
size_t cur_line_length;
size_t cur_line_end_length;
} grpc_http_parser;
void grpc_http_parser_init(grpc_http_parser *parser, grpc_http_type type,
void *request_or_response);
void grpc_http_parser_destroy(grpc_http_parser *parser);
/* Sets \a start_of_body to the offset in \a slice of the start of the body. */
grpc_error *grpc_http_parser_parse(grpc_http_parser *parser, grpc_slice slice,
size_t *start_of_body);
grpc_error *grpc_http_parser_eof(grpc_http_parser *parser);
void grpc_http_request_destroy(grpc_http_request *request);
void grpc_http_response_destroy(grpc_http_response *response);
extern grpc_tracer_flag grpc_http1_trace;
#endif /* GRPC_CORE_LIB_HTTP_PARSER_H */
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