libhttpserver/src/httpserver/http_response.hpp at master · dkosyak/libhttpserver · GitHub

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This file is part of libhttpserver

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301

USA

#if !defined (_HTTPSERVER_HPP_INSIDE_) && !defined (HTTPSERVER_COMPILATION)

#error "Only <httpserver.hpp> or <httpserverpp> can be included directly."

#endif

#ifndef _HTTP_RESPONSE_HPP_

#define _HTTP_RESPONSE_HPP_

#include <map>

#include <utility>

#include <string>

#include <iosfwd>

#include <stdint.h>

#include <vector>

#include <iostream>

#include "httpserver/binders.hpp"

#include "httpserver/http_utils.hpp"

struct MHD_Connection;

struct MHD_Response;

namespace httpserver

{

class webserver;

class http_response_builder;

namespace details

{

struct http_response_ptr;

ssize_t cb(void*, uint64_t, char*, size_t);

struct cache_entry;

};

class bad_caching_attempt: public std::exception

{

virtual const char* what() const throw()

{

return "You cannot pass ce = 0x0 without key!";

}

};

typedef ssize_t(*cycle_callback_ptr)(char*, size_t);

/**

* Class representing an abstraction for an Http Response. It is used from classes using these apis to send information through http protocol.

**/

class http_response

{

public:

http_response(const http_response_builder& builder);

/**

* Copy constructor

* @param b The http_response object to copy attributes value from.

**/

http_response(const http_response& b):

content(b.content),

response_code(b.response_code),

autodelete(b.autodelete),

realm(b.realm),

opaque(b.opaque),

reload_nonce(b.reload_nonce),

fp(b.fp),

filename(b.filename),

headers(b.headers),

footers(b.footers),

cookies(b.cookies),

topics(b.topics),

keepalive_secs(b.keepalive_secs),

keepalive_msg(b.keepalive_msg),

send_topic(b.send_topic),

underlying_connection(b.underlying_connection),

ce(b.ce),

cycle_callback(b.cycle_callback),

get_raw_response(this, b._get_raw_response),

decorate_response(this, b._decorate_response),

enqueue_response(this, b._enqueue_response),

completed(b.completed),

ws(b.ws),

connection_id(b.connection_id),

_get_raw_response(b._get_raw_response),

_decorate_response(b._decorate_response),

_enqueue_response(b._enqueue_response)

{

}

http_response(): response_code(-1)

{

}

~http_response();

/**

* Method used to get the content from the response.

* @return the content in string form

**/

std::string get_content()

{

return this->content;

}

void get_content(std::string& result)

{

result = this->content;

}

/**

* Method used to get a specified header defined for the response

* @param key The header identification

* @return a string representing the value assumed by the header

**/

std::string get_header(const std::string& key)

{

return this->headers[key];

}

void get_header(const std::string& key, std::string& result)

{

result = this->headers[key];

}

/**

* Method used to get a specified footer defined for the response

* @param key The footer identification

* @return a string representing the value assumed by the footer

**/

std::string get_footer(const std::string& key)

{

return this->footers[key];

}

void get_footer(const std::string& key, std::string& result)

{

result = this->footers[key];

}

std::string get_cookie(const std::string& key)

{

return this->cookies[key];

}

void get_cookie(const std::string& key, std::string& result)

{

result = this->cookies[key];

}

/**

* Method used to get all headers passed with the request.

* @return a map<string,string> containing all headers.

**/

size_t get_headers(

std::map<std::string, std::string, http::header_comparator>& result

) const;

/**

* Method used to get all footers passed with the request.

* @return a map<string,string> containing all footers.

**/

size_t get_footers(

std::map<std::string, std::string, http::header_comparator>& result

) const;

size_t get_cookies(

std::map<std::string, std::string, http::header_comparator>& result

) const;

/**

* Method used to get the response code from the response

* @return The response code

**/

int get_response_code()

{

return this->response_code;

}

std::string get_realm() const

{

return this->realm;

}

void get_realm(std::string& result) const

{

result = this->realm;

}

std::string get_opaque() const

{

return this->opaque;

}

void get_opaque(std::string& result) const

{

result = this->opaque;

}

bool need_nonce_reload() const

{

return this->reload_nonce;

}

int get_switch_callback() const

{

return 0;

}

bool is_autodelete() const

{

return autodelete;

}

size_t get_topics(std::vector<std::string>& topics) const

{

typedef std::vector<std::string>::const_iterator topics_it;

for(topics_it it=this->topics.begin();it != this->topics.end();++it)

topics.push_back(*it);

return topics.size();

}

protected:

typedef details::binders::functor_two<MHD_Response**, webserver*, void> get_raw_response_t;

typedef details::binders::functor_one<MHD_Response*, void> decorate_response_t;

typedef details::binders::functor_two<MHD_Connection* ,MHD_Response*, int> enqueue_response_t;

std::string content;

int response_code;

bool autodelete;

std::string realm;

std::string opaque;

bool reload_nonce;

int fp;

std::string filename;

std::map<std::string, std::string, http::header_comparator> headers;

std::map<std::string, std::string, http::header_comparator> footers;

std::map<std::string, std::string, http::header_comparator> cookies;

std::vector<std::string> topics;

int keepalive_secs;

std::string keepalive_msg;

std::string send_topic;

struct MHD_Connection* underlying_connection;

details::cache_entry* ce;

cycle_callback_ptr cycle_callback;

const get_raw_response_t get_raw_response;

const decorate_response_t decorate_response;

const enqueue_response_t enqueue_response;

bool completed;

webserver* ws;

MHD_Connection* connection_id;

void get_raw_response_str(MHD_Response** res, webserver* ws = 0x0);

void get_raw_response_file(MHD_Response** res, webserver* ws = 0x0);

void get_raw_response_switch_r(MHD_Response** res, webserver* ws = 0x0);

void get_raw_response_lp_receive(MHD_Response** res,

webserver* ws = 0x0);

void get_raw_response_lp_send(MHD_Response** res, webserver* ws = 0x0);

void get_raw_response_cache(MHD_Response** res, webserver* ws = 0x0);

void get_raw_response_deferred(MHD_Response** res, webserver* ws = 0x0);

void decorate_response_str(MHD_Response* res);

void decorate_response_cache(MHD_Response* res);

void decorate_response_deferred(MHD_Response* res);

int enqueue_response_str(MHD_Connection* connection, MHD_Response* res);

int enqueue_response_basic(MHD_Connection* connection,

MHD_Response* res

);

int enqueue_response_digest(MHD_Connection* connection,

MHD_Response* res

);

friend class webserver;

friend struct details::http_response_ptr;

friend class http_response_builder;

friend void clone_response(const http_response& hr, http_response** dhr);

friend ssize_t details::cb(void* cls, uint64_t pos, char* buf, size_t max);

friend std::ostream &operator<< (std::ostream &os, const http_response &r);

private:

http_response& operator=(const http_response& b);

static ssize_t data_generator (void* cls, uint64_t pos, char* buf, size_t max);

void (http_response::*_get_raw_response)(MHD_Response**, webserver*);

void (http_response::*_decorate_response)(MHD_Response*);

int (http_response::*_enqueue_response)(MHD_Connection*, MHD_Response*);

};

std::ostream &operator<< (std::ostream &os, const http_response &r);

};

#endif

libhttpserver/src/httpserver/http_response.hpp at master · dkosyak/libhttpserver · GitHub

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