/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012
* Jonathan Schleifer <js@webkeks.org>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#import "OFObject.h"
@class OFString;
@class OFDictionary;
@class OFURL;
@class OFHTTPRequest;
@class OFHTTPRequestResult;
@class OFTCPSocket;
@class OFDataArray;
typedef enum of_http_request_type_t {
OF_HTTP_REQUEST_TYPE_GET,
OF_HTTP_REQUEST_TYPE_POST,
OF_HTTP_REQUEST_TYPE_HEAD
} of_http_request_type_t;
/**
* \brief A delegate for OFHTTPRequests.
*/
#ifndef OF_HTTP_REQUEST_M
@protocol OFHTTPRequestDelegate <OFObject>
#else
@protocol OFHTTPRequestDelegate
#endif
#ifdef OF_HAVE_OPTIONAL_PROTOCOLS
@optional
#endif
/**
* \brief A callback which is called when an OFHTTPRequest creates a socket.
*
* This is useful if the connection is using HTTPS and the server requires a
* client certificate. This callback can then be used to tell the TLS socket
* about the certificate. Another use case is to tell the socket about a SOCKS5
* proxy it should use for this connection.
*
* \param request The OFHTTPRequest that created a socket
* \param socket The socket created by the OFHTTPRequest
*/
- (void)request: (OFHTTPRequest*)request
didCreateSocket: (OFTCPSocket*)socket;
/**
* \brief A callback which is called when an OFHTTPRequest received headers.
*
* \param request The OFHTTPRequest which received the headers
* \param headers The headers received
* \param statusCode The status code received
*/
- (void)request: (OFHTTPRequest*)request
didReceiveHeaders: (OFDictionary*)headers
withStatusCode: (int)statusCode;
/**
* \brief A callback which is called when an OFHTTPRequest received data.
*
* This is useful for example if you want to update a status display.
*
* \param request The OFHTTPRequest which received data
* \param data The data the OFHTTPRequest received
* \param length The length of the data received, in bytes
*/
- (void)request: (OFHTTPRequest*)request
didReceiveData: (const char*)data
withLength: (size_t)length;
/**
* \brief A callback which is called when an OFHTTPRequest will follow a
* redirect.
*
* If you want to get the headers and data for each redirect, set the number of
* redirects to 0 and perform a new OFHTTPRequest for each redirect. However,
* this callback will not be called then and you have to look at the status code
* to detect a redirect.
*
* This callback will only be called if the OFHTTPRequest will follow a
* redirect. If the maximum number of redirects has been reached already, this
* callback will not be called.
*
* \param request The OFHTTPRequest which will follow a redirect
* \param URL The URL to which it will follow a redirect
* \return A boolean whether the OFHTTPRequest should follow the redirect
*/
- (BOOL)request: (OFHTTPRequest*)request
willFollowRedirectTo: (OFURL*)URL;
@end
/**
* \brief A class for storing and performing HTTP requests.
*/
@interface OFHTTPRequest: OFObject
{
OFURL *URL;
of_http_request_type_t requestType;
OFString *queryString;
OFDictionary *headers;
BOOL redirectsFromHTTPSToHTTPAllowed;
id <OFHTTPRequestDelegate> delegate;
BOOL storesData;
}
#ifdef OF_HAVE_PROPERTIES
@property (copy) OFURL *URL;
@property of_http_request_type_t requestType;
@property (copy) OFString *queryString;
@property (copy) OFDictionary *headers;
@property BOOL redirectsFromHTTPSToHTTPAllowed;
@property (assign) id <OFHTTPRequestDelegate> delegate;
@property BOOL storesData;
#endif
/**
* \brief Creates a new OFHTTPRequest.
*
* \return A new, autoreleased OFHTTPRequest
*/
+ request;
/**
* \brief Creates a new OFHTTPRequest with the specified URL.
*
* \param URL The URL for the request
* \return A new, autoreleased OFHTTPRequest
*/
+ requestWithURL: (OFURL*)URL;
/**
* \brief Initializes an already allocated OFHTTPRequest with the specified URL.
*
* \param URL The URL for the request
* \return An initialized OFHTTPRequest
*/
- initWithURL: (OFURL*)URL;
/**
* \brief Sets the URL of the HTTP request.
*
* \param URL The URL of the HTTP request
*/
- (void)setURL: (OFURL*)URL;
/**
* \brief Returns the URL of the HTTP request.
*
* \return The URL of the HTTP request
*/
- (OFURL*)URL;
/**
* \brief Sets the request type of the HTTP request.
*
* \param requestType The request type of the HTTP request
*/
- (void)setRequestType: (of_http_request_type_t)requestType;
/**
* \brief Returns the request type of the HTTP request.
*
* \return The request type of the HTTP request
*/
- (of_http_request_type_t)requestType;
/**
* \brief Sets the query string of the HTTP request.
*
* \param queryString The query string of the HTTP request
*/
- (void)setQueryString: (OFString*)queryString;
/**
* \brief Returns the query string of the HTTP request.
*
* \return The query string of the HTTP request
*/
- (OFString*)queryString;
/**
* \brief Sets a dictionary with headers for the HTTP request.
*
* \param headers A dictionary with headers for the HTTP request
*/
- (void)setHeaders: (OFDictionary*)headers;
/**
* \brief Retrusn a dictionary with headers for the HTTP request.
*
* \return A dictionary with headers for the HTTP request.
*/
- (OFDictionary*)headers;
/**
* \brief Sets whether redirects from HTTPS to HTTP are allowed.
*
* \param allowed Whether redirects from HTTPS to HTTP are allowed
*/
- (void)setRedirectsFromHTTPSToHTTPAllowed: (BOOL)allowed;
/**
* \brief Returns whether redirects from HTTPS to HTTP will be allowed
*
* \return Whether redirects from HTTPS to HTTP will be allowed
*/
- (BOOL)redirectsFromHTTPSToHTTPAllowed;
/**
* \brief Sets the delegate of the HTTP request.
*
* \param delegate The delegate of the HTTP request
*/
- (void)setDelegate: (id <OFHTTPRequestDelegate>)delegate;
/**
* \brief Returns the delegate of the HTTP reqeust.
*
* \return The delegate of the HTTP request
*/
- (id <OFHTTPRequestDelegate>)delegate;
/**
* \brief Sets whether an OFDataArray with the data should be created.
*
* Setting this to NO is only useful if you are using the delegate to handle the
* data.
*
* \param storesData Whether to store the data in an OFDataArray
*/
- (void)setStoresData: (BOOL)storesData;
/**
* \brief Returns whether an OFDataArray with the date should be created.
*
* \return Whether an OFDataArray with the data should be created
*/
- (BOOL)storesData;
/**
* \brief Performs the HTTP request and returns an OFHTTPRequestResult.
*
* \return An OFHTTPRequestResult with the result of the HTTP request
*/
- (OFHTTPRequestResult*)perform;
/**
* \brief Performs the HTTP request and returns an OFHTTPRequestResult.
*
* \param redirects The maximum number of redirects after which no further
* attempt is done to follow the redirect, but instead the
* redirect is returned as an OFHTTPRequest
* \return An OFHTTPRequestResult with the result of the HTTP request
*/
- (OFHTTPRequestResult*)performWithRedirects: (size_t)redirects;
@end
/**
* \brief A class for storing the result of an HTTP request.
*/
@interface OFHTTPRequestResult: OFObject
{
short statusCode;
OFDataArray *data;
OFDictionary *headers;
}
#ifdef OF_HAVE_PROPERTIES
@property (readonly) short statusCode;
@property (readonly, copy) OFDictionary *headers;
@property (readonly, retain) OFDataArray *data;
#endif
- initWithStatusCode: (short)status
headers: (OFDictionary*)headers
data: (OFDataArray*)data;
/**
* \brief Returns the state code of the result of the HTTP request.
*
* \return The status code of the result of the HTTP request
*/
- (short)statusCode;
/**
* \brief Returns the headers of the result of the HTTP request.
*
* \return The headers of the result of the HTTP request
*/
- (OFDictionary*)headers;
/**
* \brief Returns the data received for the HTTP request.
*
* Returns nil if storesData was set to NO.
*
* \return The data received for the HTTP request
*/
- (OFDataArray*)data;
@end
@interface OFObject (OFHTTPRequestDelegate) <OFHTTPRequestDelegate>
@end
extern Class of_http_request_tls_socket_class;