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/*
 +----------------------------------------------------------------------+
 | Swoole                                                               |
 +----------------------------------------------------------------------+
 | This source file is subject to version 2.0 of the Apache license,    |
 | that is bundled with this package in the file LICENSE, and is        |
 | available through the world-wide-web at the following url:           |
 | http://www.apache.org/licenses/LICENSE-2.0.html                      |
 | If you did not receive a copy of the Apache2.0 license and are unable|
 | to obtain it through the world-wide-web, please send a note to       |
 | license@php.net so we can mail you a copy immediately.               |
 +----------------------------------------------------------------------+
 | Author: Tianfeng Han  <mikan.tenny@gmail.com>                        |
 +----------------------------------------------------------------------+
 */

#ifndef SW_HTTP_H_
#define SW_HTTP_H_

#include "swoole.h"

SW_EXTERN_C_BEGIN

enum swHttp_version
{
    SW_HTTP_VERSION_10 = 1,
    SW_HTTP_VERSION_11,
};

enum swHttp_method
{
    SW_HTTP_DELETE = 1, SW_HTTP_GET, SW_HTTP_HEAD, SW_HTTP_POST, SW_HTTP_PUT, SW_HTTP_PATCH,
    /* pathological */
    SW_HTTP_CONNECT, SW_HTTP_OPTIONS, SW_HTTP_TRACE,
    /* webdav */
    SW_HTTP_COPY, SW_HTTP_LOCK, SW_HTTP_MKCOL, SW_HTTP_MOVE, SW_HTTP_PROPFIND, SW_HTTP_PROPPATCH, SW_HTTP_UNLOCK,
    /* subversion */
    SW_HTTP_REPORT, SW_HTTP_MKACTIVITY, SW_HTTP_CHECKOUT, SW_HTTP_MERGE,
    /* upnp */
    SW_HTTP_MSEARCH, SW_HTTP_NOTIFY, SW_HTTP_SUBSCRIBE, SW_HTTP_UNSUBSCRIBE,
    /* proxy */
    SW_HTTP_PURGE,
    /* Http2 */
    SW_HTTP_PRI,
};

enum swHttp_status_code
{
    SW_HTTP_CONTINUE = 100,
    SW_HTTP_SWITCHING_PROTOCOLS = 101,
    SW_HTTP_PROCESSING = 102,

    SW_HTTP_OK = 200,
    SW_HTTP_CREATED = 201,
    SW_HTTP_ACCEPTED = 202,
    SW_HTTP_NO_CONTENT = 204,
    SW_HTTP_PARTIAL_CONTENT = 206,

    SW_HTTP_SPECIAL_RESPONSE = 300,
    SW_HTTP_MOVED_PERMANENTLY = 301,
    SW_HTTP_MOVED_TEMPORARILY = 302,
    SW_HTTP_SEE_OTHER = 303,
    SW_HTTP_NOT_MODIFIED = 304,
    SW_HTTP_TEMPORARY_REDIRECT = 307,
    SW_HTTP_PERMANENT_REDIRECT = 308,

    SW_HTTP_BAD_REQUEST = 400,
    SW_HTTP_UNAUTHORIZED = 401,
    SW_HTTP_FORBIDDEN = 403,
    SW_HTTP_NOT_FOUND = 404,
    SW_HTTP_NOT_ALLOWED = 405,
    SW_HTTP_REQUEST_TIME_OUT = 408,
    SW_HTTP_CONFLICT = 409,
    SW_HTTP_LENGTH_REQUIRED = 411,
    SW_HTTP_PRECONDITION_FAILED = 412,
    SW_HTTP_REQUEST_ENTITY_TOO_LARGE = 413,
    SW_HTTP_REQUEST_URI_TOO_LARGE = 414,
    SW_HTTP_UNSUPPORTED_MEDIA_TYPE = 415,
    SW_HTTP_RANGE_NOT_SATISFIABLE = 416,
    SW_HTTP_MISDIRECTED_REQUEST = 421,
    SW_HTTP_TOO_MANY_REQUESTS = 429,

    SW_HTTP_INTERNAL_SERVER_ERROR = 500,
    SW_HTTP_NOT_IMPLEMENTED = 501,
    SW_HTTP_BAD_GATEWAY = 502,
    SW_HTTP_SERVICE_UNAVAILABLE = 503,
    SW_HTTP_GATEWAY_TIME_OUT = 504,
    SW_HTTP_VERSION_NOT_SUPPORTED = 505,
    SW_HTTP_INSUFFICIENT_STORAGE = 507
};

typedef struct _swHttpRequest
{
    uint8_t method;
    uint8_t offset;
    uint8_t version;
    uint8_t opcode;
    uint8_t excepted;
    uint8_t keep_alive;

    uint32_t url_offset;
    uint32_t url_length;

    uint32_t header_length;
    uint32_t content_length;
    swString *buffer;

} swHttpRequest;

int swHttp_get_method(const char *method_str, int method_len);
const char* swHttp_get_method_string(int method);
const char *swHttp_get_status_message(int code);

size_t swHttp_url_decode(char *str, size_t len);
char* swHttp_url_encode(char const *str, size_t len);

int swHttpRequest_get_protocol(swHttpRequest *request);
int swHttpRequest_get_header_info(swHttpRequest *request);
int swHttpRequest_get_header_length(swHttpRequest *request);
void swHttpRequest_free(swConnection *conn);

static inline void swHttpRequest_clean(swHttpRequest *request)
{
    memset(request, 0, offsetof(swHttpRequest, buffer));
}

int swHttp_static_handler(swServer *serv, swHttpRequest *request, swConnection *conn);
int swHttp_static_handler_add_location(swServer *serv, const char *location, size_t length);

#ifdef SW_HTTP_100_CONTINUE
int swHttpRequest_has_expect_header(swHttpRequest *request);
#endif

#ifdef SW_USE_HTTP2
ssize_t swHttpMix_get_package_length(swProtocol *protocol, swSocket *conn, char *data, uint32_t length);
uint8_t swHttpMix_get_package_length_size(swSocket *conn);
int swHttpMix_dispatch_frame(swProtocol *protocol, swSocket *conn, char *data, uint32_t length);
#endif

SW_EXTERN_C_END

#endif /* SW_HTTP_H_ */
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