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flickr.call.methods.pas
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// Copyright (c) 2015, Jordi Corbilla
// 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 this library 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 HOLDER 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.
unit flickr.call.methods;
interface
uses
Generics.collections, flickr.lib.options.agent;
type
ICallMethod = interface
function getURLmethod(method : string) : string;
function getURLmethodParams(method : string; params : TDictionary<string, string>) : string;
end;
TCallMethod = Class(TinterfacedObject, ICallMethod)
private
FApi_key : string;
FAuth_token : string;
FSecret : string;
FToken_Secret : string;
public
class function New(optionsAgent : IOptionsAgent): ICallMethod;
constructor Create(optionsAgent : IOptionsAgent);
function getURLmethodParams(method : string; params : TDictionary<string, string>) : string;
function getURLmethod(method : string) : string;
End;
implementation
uses
flickr.signature, HTTPApp, NetEncoding, flickr.Dictionary.sorting;
{ TCallMethod }
constructor TCallMethod.Create(optionsAgent : IOptionsAgent);
begin
FApi_key := optionsAgent.flickrApiKey;
FAuth_token := optionsAgent.userToken;
FSecret := optionsAgent.secret;
FToken_secret := optionsAgent.userTokenSecret;
end;
function TCallMethod.getURLmethod(method: string): string;
var
baseURL, paramURL, encodedURL, returnURL : string;
ConsumerSecret : string;
TokenSecret : string;
timeStamp : string;
begin
//Generate request access token needs to generate:
baseURL := 'https://api.flickr.com/services/rest';
baseURL := String(TNetEncoding.URL.Encode(baseURL));
timeStamp := TSignature.getTimeStamp();
paramURL := 'format=rest';
paramURL := paramURL + '&method=' + method;
paramURL := paramURL + '&oauth_consumer_key=' + Fapi_key;
paramURL := paramURL + '&oauth_nonce=' + TSignature.getOAuthNonce(timeStamp);
paramURL := paramURL + '&oauth_signature_method=HMAC-SHA1';
paramURL := paramURL + '&oauth_timestamp=' + timeStamp;
paramURL := paramURL + '&oauth_token=' + Fauth_token;
paramURL := paramURL + '&oauth_version=1.0';
paramURL := String(TNetEncoding.URL.Encode(paramURL));
//Encode this to get the signature
encodedURL := 'GET&' + baseURL + '&' + paramURL;
//Example encoded URL:
ConsumerSecret := String(TNetEncoding.URL.Encode(Fsecret));
TokenSecret := String(TNetEncoding.URL.Encode(Ftoken_secret));
ConsumerSecret := ConsumerSecret + '&' + TokenSecret;
returnURL := 'https://api.flickr.com/services/rest';
returnURL := returnURL + '?oauth_nonce=' + TSignature.getOAuthNonce(timeStamp);
returnURL := returnURL + '&format=rest';
returnURL := returnURL + '&oauth_consumer_key=' + Fapi_key;
returnURL := returnURL + '&oauth_timestamp=' + timeStamp;
returnURL := returnURL + '&oauth_signature_method=HMAC-SHA1';
returnURL := returnURL + '&oauth_version=1.0';
returnURL := returnURL + '&oauth_token=' + Fauth_token;
returnURL := returnURL + '&oauth_signature=' + TSignature.getOAuthSignature(encodedURL, ConsumerSecret);
returnURL := returnURL + '&method=' + method;
result := returnURL;
end;
function TCallMethod.getURLmethodParams(method: string; params: TDictionary<string, string>): string;
var
baseURL, paramURL, encodedURL, returnURL : string;
ConsumerSecret : string;
TokenSecret : string;
timeStamp : string;
keys : string;
sortedArray : TArray<String>;
begin
//Generate request access token needs to generate:
baseURL := 'https://api.flickr.com/services/rest';
baseURL := String(TNetEncoding.URL.Encode(baseURL));
timeStamp := TSignature.getTimeStamp();
paramURL := 'format=rest';
paramURL := paramURL + '&method=' + method;
paramURL := paramURL + '&oauth_consumer_key=' + Fapi_key;
paramURL := paramURL + '&oauth_nonce=' + TSignature.getOAuthNonce(timeStamp);
paramURL := paramURL + '&oauth_signature_method=HMAC-SHA1';
paramURL := paramURL + '&oauth_timestamp=' + timeStamp;
paramURL := paramURL + '&oauth_token=' + Fauth_token;
paramURL := paramURL + '&oauth_version=1.0';
sortedArray := TDictionarySorting.getSortedKey(params);
for keys in sortedArray do
paramURL := paramURL + '&' + keys + '=' + params.Items[keys];
paramURL := String(TNetEncoding.URL.Encode(paramURL));
//Encode this to get the signature
encodedURL := 'GET&' + baseURL + '&' + paramURL;
//Example encoded URL:
ConsumerSecret := String(TNetEncoding.URL.Encode(Fsecret));
TokenSecret := String(TNetEncoding.URL.Encode(Ftoken_secret));
ConsumerSecret := ConsumerSecret + '&' + TokenSecret;
returnURL := 'https://api.flickr.com/services/rest';
returnURL := returnURL + '?oauth_nonce=' + TSignature.getOAuthNonce(timeStamp);
returnURL := returnURL + '&format=rest';
returnURL := returnURL + '&oauth_consumer_key=' + Fapi_key;
returnURL := returnURL + '&oauth_timestamp=' + timeStamp;
returnURL := returnURL + '&oauth_signature_method=HMAC-SHA1';
returnURL := returnURL + '&oauth_version=1.0';
returnURL := returnURL + '&oauth_token=' + Fauth_token;
returnURL := returnURL + '&oauth_signature=' + TSignature.getOAuthSignature(encodedURL, ConsumerSecret);
for keys in sortedArray do
returnURL := returnURL + '&' + keys + '=' + params.Items[keys];
returnURL := returnURL + '&method=' + method;
result := returnURL;
end;
class function TCallMethod.New(optionsAgent : IOptionsAgent): ICallMethod;
begin
result := TCallMethod.create(optionsAgent);
end;
end.