Durant mes années d’expériences j'ai rencontre plusieurs problèmes bloquant, mais celui là était parmi les pires.
Un de mes clients nous a demandé d'utiliser AMAZON S3 comme espace de stockage des fichiers, bien sûre SalesForce vous propose une API déjà prête pour ce genre de manipulation, MAIS PAS POUR FRANKFURT.
Pour ceux qui n'ont pas encore rencontre ce problème, FRANKFURT utilise un nouveau algorithme de sécurité beaucoup plus compliqué et qui se base sur plusieurs cryptage.
Et Comme je suis quelqu'un qui pense que partager une information, entre dans le cadre de l'amélioration des compétences, VOICI LA SOLUTION :)
public class amazon{
public amazon(){}
public void sendTXTToAmazon(Blob b,String docname,String bucket){
Datetime currentDate = DateTimeHelper.getGMTDate(Datetime.now());
/* Send to Amazon S3 */
HttpRequest req = new HttpRequest();
AWSAccess__c CS = AWSAccess__c.getOrgDefaults();
string amz_content_sha256 = EncodingUtil.convertToHex(Crypto.generateDigest('SHA-256', b));
/*Set HTTPRequest Method*/
req.setMethod('PUT');
/*Set HTTPRequest header properties*/
req.setHeader('content-type', 'text/plain;charset=utf-8');
req.setHeader('Content-Length',String.valueOf(b.size()));
req.setHeader('Host','s3-eu-central-1.amazonaws.com');
req.setHeader('Connection','keep-alive');
req.setEndpoint('https://s3-eu-central-1.amazonaws.com/'+bucket+'/'+docname);
req.setHeader('x-amz-content-sha256',amz_content_sha256);
req.setHeader('x-amz-storage-class','REDUCED_REDUNDANCY');
String todayformat = currentDate.format('yyyyMMdd');
req.setHeader('Date',currentDate.format('EEE, d MMM yyyy HH:mm:ss Z'));
req.setHeader('x-amz-date',currentDate.format('yyyyMMdd')+'T'+currentDate.format('HHmmss')+'Z');
String key = 'AWS4' +CS.secret__c;
Blob DateKey = Crypto.generateMac('hmacSHA256',Blob.valueOf(todayformat),Blob.valueOf(key));
Blob DateRegionKey = Crypto.generateMac('hmacSHA256',Blob.valueOf('eu-central-1'),DateKey);
Blob DateRegionServiceKey = Crypto.generateMac('hmacSHA256',Blob.valueOf('s3'),DateRegionKey);
Blob SigningKey = Crypto.generateMac('hmacSHA256',Blob.valueOf('aws4_request'),DateRegionServiceKey);
String canonical = 'PUT\n'+
'/'+bucket+'/'+docname+'\n\n'+
'date:' + currentDate.format('EEE, d MMM yyyy HH:mm:ss Z')+'\n'+
'host:s3-eu-central-1.amazonaws.com\n'+
'x-amz-content-sha256:'+amz_content_sha256+'\n'+
'x-amz-date:'+currentDate.format('yyyyMMdd')+'T'+currentDate.format('HHmmss')+'Z'+'\n'+
'x-amz-storage-class:REDUCED_REDUNDANCY\n\n'+
'date;host;x-amz-content-sha256;x-amz-date;x-amz-storage-class\n'
+amz_content_sha256;
Blob canonicalsign = Crypto.generateDigest('SHA-256', Blob.valueOf(canonical));
Blob StringToSign = Blob.valueOf('AWS4-HMAC-SHA256\n'+
currentDate.format('yyyyMMdd')+'T'+currentDate.format('HHmmss')+'Z'+'\n'+
currentDate.format('yyyyMMdd')+'/eu-central-1/s3/aws4_request\n'+
EncodingUtil.convertToHex(canonicalsign));
Blob bsig = Crypto.generateMac('hmacSHA256',StringToSign,SigningKey);
req.setHeader('Authorization', 'AWS4-HMAC-SHA256 Credential='+CS.Key__c+'/'+todayformat+'/eu-central-1/s3/aws4_request,SignedHeaders=date;host;x-amz-content-sha256;x-amz-date;x-amz-storage-class,Signature='+EncodingUtil.convertToHex(bsig));
String docBody = EncodingUtil.convertToHex(b);
/*Set the HTTPRequest body */
req.setBodyAsBlob(b);
Http http = new Http();
try {
HTTPResponse res = http.send(req);
System.debug(res.getBody());
//System.debug(res.toString());
System.debug('STATUS:'+res.getStatus());
System.debug('STATUS_CODE:'+res.getStatusCode());
} catch(System.CalloutException e) {
System.debug('erreur : '+e);
}
}
public void sendPDFToAmazon(Blob b,String docname,String bucket){
Datetime currentDate = DateTimeHelper.getGMTDate(Datetime.now());
/* Send to Amazon S3 */
HttpRequest req = new HttpRequest();
AWSAccess__c CS = AWSAccess__c.getOrgDefaults();
string amz_content_sha256 = EncodingUtil.convertToHex(Crypto.generateDigest('SHA-256', b));
/*Set HTTPRequest Method*/
req.setMethod('PUT');
/*Set HTTPRequest header properties*/
req.setHeader('content-type', 'application/pdf');
req.setHeader('Content-Length',String.valueOf(b.size()));
req.setHeader('Host','s3-eu-central-1.amazonaws.com');
req.setHeader('Connection','keep-alive');
req.setEndpoint('https://s3-eu-central-1.amazonaws.com/'+bucket+'/'+docname);
req.setHeader('x-amz-content-sha256',amz_content_sha256);
req.setHeader('x-amz-storage-class','REDUCED_REDUNDANCY');
String todayformat = currentDate.format('yyyyMMdd');
req.setHeader('Date',currentDate.format('EEE, d MMM yyyy HH:mm:ss Z'));
req.setHeader('x-amz-date',currentDate.format('yyyyMMdd')+'T'+currentDate.format('HHmmss')+'Z');
String key = 'AWS4' +CS.secret__c;
Blob DateKey = Crypto.generateMac('hmacSHA256',Blob.valueOf(todayformat),Blob.valueOf(key));
Blob DateRegionKey = Crypto.generateMac('hmacSHA256',Blob.valueOf('eu-central-1'),DateKey);
Blob DateRegionServiceKey = Crypto.generateMac('hmacSHA256',Blob.valueOf('s3'),DateRegionKey);
Blob SigningKey = Crypto.generateMac('hmacSHA256',Blob.valueOf('aws4_request'),DateRegionServiceKey);
String canonical = 'PUT\n'+
'/'+bucket+'/'+docname+'\n\n'+
'date:' + currentDate.format('EEE, d MMM yyyy HH:mm:ss Z')+'\n'+
'host:s3-eu-central-1.amazonaws.com\n'+
'x-amz-content-sha256:'+amz_content_sha256+'\n'+
'x-amz-date:'+currentDate.format('yyyyMMdd')+'T'+currentDate.format('HHmmss')+'Z'+'\n'+
'x-amz-storage-class:REDUCED_REDUNDANCY\n\n'+
'date;host;x-amz-content-sha256;x-amz-date;x-amz-storage-class\n'
+amz_content_sha256;
Blob canonicalsign = Crypto.generateDigest('SHA-256', Blob.valueOf(canonical));
Blob StringToSign = Blob.valueOf('AWS4-HMAC-SHA256\n'+
currentDate.format('yyyyMMdd')+'T'+currentDate.format('HHmmss')+'Z'+'\n'+
currentDate.format('yyyyMMdd')+'/eu-central-1/s3/aws4_request\n'+
EncodingUtil.convertToHex(canonicalsign));
Blob bsig = Crypto.generateMac('hmacSHA256',StringToSign,SigningKey);
req.setHeader('Authorization', 'AWS4-HMAC-SHA256 Credential='+CS.Key__c+'/'+todayformat+'/eu-central-1/s3/aws4_request,SignedHeaders=date;host;x-amz-content-sha256;x-amz-date;x-amz-storage-class,Signature='+EncodingUtil.convertToHex(bsig));
String docBody = EncodingUtil.convertToHex(b);
/*Set the HTTPRequest body */
req.setBodyAsBlob(b);
Http http = new Http();
try {
HTTPResponse res = http.send(req);
System.debug(res.getBody());
//System.debug(res.toString());
System.debug('STATUS:'+res.getStatus());
System.debug('STATUS_CODE:'+res.getStatusCode());
} catch(System.CalloutException e) {
System.debug('erreur : '+e);
MailingHelper.sendToAdminMail('Erreur SEND PDF Amazon : '+docname, e.getMessage());
}
}
public string GetObjectUrl(String docname,String bucket){
String url;
Datetime currentDate = DateTimeHelper.getGMTDate(Datetime.now());
string exipredFormat = '1600';
String todayformat = currentDate.format('yyyyMMdd');
AWSAccess__c CS = AWSAccess__c.getOrgDefaults();
String key = 'AWS4' +CS.secret__c;
Blob DateKey = Crypto.generateMac('hmacSHA256',Blob.valueOf(todayformat),Blob.valueOf(key));
Blob DateRegionKey = Crypto.generateMac('hmacSHA256',Blob.valueOf('eu-central-1'),DateKey);
Blob DateRegionServiceKey = Crypto.generateMac('hmacSHA256',Blob.valueOf('s3'),DateRegionKey);
Blob SigningKey = Crypto.generateMac('hmacSHA256',Blob.valueOf('aws4_request'),DateRegionServiceKey);
String canonical = 'GET\n'+
'/'+docname+'\n'+
'X-Amz-Algorithm=AWS4-HMAC-SHA256&'+
'X-Amz-Credential='+CS.Key__c+'%2F'+todayformat+'%2Feu-central-1%2Fs3%2Faws4_request&'+
'X-Amz-Date='+todayformat+'T'+currentDate.format('HHmmss')+'Z&'+
'X-Amz-Expires='+exipredFormat+'&X-Amz-SignedHeaders=host\n'+
'host:'+bucket+'.s3.amazonaws.com\n\n'+
'host\n'+
'UNSIGNED-PAYLOAD';
system.debug(canonical);
Blob canonicalsign = Crypto.generateDigest('SHA-256', Blob.valueOf(canonical));
Blob StringToSign = Blob.valueOf('AWS4-HMAC-SHA256\n'+
todayformat+'T'+currentDate.format('HHmmss')+'Z'+'\n'+
todayformat+'/eu-central-1/s3/aws4_request\n'+
EncodingUtil.convertToHex(canonicalsign));
system.debug(StringToSign);
Blob bsig = Crypto.generateMac('hmacSHA256',StringToSign,SigningKey);
url = 'https://'+bucket+'.s3.amazonaws.com/'+docname+'?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential='+CS.Key__c+'/'+todayformat+'/eu-central-1/s3/aws4_request&X-Amz-Date='+todayformat+'T'+currentDate.format('HHmmss')+'Z&X-Amz-Expires='+exipredFormat+'&X-Amz-SignedHeaders=host&X-Amz-Signature='+EncodingUtil.convertToHex(bsig);
return url;
}
}
Heureux de répondre à toute question .
Espérons que cela aidera quelqu'un.
