Develop Reference

InvalidToken Error when using Rest API for Downloading file in an S3 AWS bucket in Android

I am trying to use the Rest Api with temporary credentials to download images stored in an S3 bucket in AWS from my Android App. I need to use the rest API instead of the TransferUtility method included in the Android AWS SDK, because I want to use an image downloader for better performance. According to the official AWS docs, I need to add an Authorization header to the HTTP Get request, that is conform like this:
Authorization = "AWS" + " " + AWSAccessKeyId + ":" + Signature;
Signature = Base64( HMAC-SHA1( YourSecretAccessKeyID, UTF-8-Encoding-Of( StringToSign ) ) );
StringToSign = HTTP-Verb + "\n" +
Content-MD5 + "\n" +
Content-Type + "\n" +
Date + "\n" +
CanonicalizedAmzHeaders +
CanonicalizedResource;
https://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthentication.html#RESTAuthenticationConstructingCanonicalizedAmzHeaders
So, I obtain the Authorization header like this:
public String AuthorizationHeader (String dirToImageInBucket) throws UnsupportedEncodingException {
final AWSMobileClient mobileClient = AWSMobileClient.defaultMobileClient();
IdentityManager iM = mobileClient.getIdentityManager();
AWSCredentialsProvider sCredProvider= iM.getCredentialsProvider();
String secretKey = sCredProvider.getCredentials().getAWSSecretKey();
String awsAccessKeyId = sCredProvider.getCredentials().getAWSAccessKeyId();
Mac hmac = null;
hmac = Mac.getInstance("HmacSHA1");
hmac.init(new SecretKeySpec(secretKey.getBytes("UTF-8"), "HmacSHA1"));
Date dateT = new Date();
#SuppressLint("SimpleDateFormat") DateFormat dateFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss Z");
String date = dateFormat.format(dateT);
String token = "x-amz-security-token:" + Login_Related.geToken(activity) +"\nx-amz-date:" +date+"\n";
String stringToSign = "GET" + "\n\n\n" + date + "\n" + token + "/" + dirToImageInBucket;
String signature = ( Base64.encodeToString(hmac.doFinal(stringToSign.getBytes("UTF-8")), Base64.DEFAULT)).replaceAll("\n", "");
return "AWS" + " " + awsAccessKeyId + ":" + signature;
}
Then I add the "Authorization" header returned by the previous method to the HTTP GET request, and also I include the headers x-amz-date and x-amz-security-token in the request (with the values of date and temporary access token respectively). I am currently testing the request on Postman to test if I can download the image by adding the mentioned headers to GET request of the image URL, and every time I send it, I get the response :
<Error>
<Code>InvalidToken</Code>
<Message>The provided token is malformed or otherwise invalid.</Message>
<Token-0>eyJraWQiOiJ4TFYxcVZiNG1IY3IrSWUxS....
I am sure I am using the right token, since the others http requests in my app are working properly with that token. Can anyone please help me realize what am I missing or doing wrong? Thanks.
Edited to include the token method:
static public String geToken(Activity act) {
AWSMobileClient.initializeMobileClientIfNecessary(act.getApplicationContext());
final AWSMobileClient mobileClient = AWSMobileClient.defaultMobileClient();
IdentityManager iM = mobileClient.getIdentityManager();
IdentityProvider iP = iM.getCurrentIdentityProvider();
token = iP.refreshToken();
System.out.println("x-amz-security-token check this token: " + token);
return token;
}

Payu payement error "Some error occurred, Try again!"

I have integrated payu into my android app through official docs at
https://www.payumoney.com/dev-guide/mobilecheckout/android.html#prereq .
The problem i'm facing is that my code works perfectly with test credentials, and fails when i use credentials of my live account that i want to integrate in the app.
public void makePayment(View view) {
String phone = "8882434664";
String productName = "product_name";
String firstName = "piyush";
String txnId = "0nf7" + System.currentTimeMillis();
String email = "piyush.jain#payu.in";
String sUrl = "https://test.payumoney.com/mobileapp/payumoney/success.php";
String fUrl = "https://test.payumoney.com/mobileapp/payumoney/failure.php";
String udf1 = "";
String udf2 = "";
String udf3 = "";
String udf4 = "";
String udf5 = "";
boolean isDebug = true;
String key = "2fcU3pmI";
String merchantId = "4947182";// These credentials are from https://test.payumoney.com/
String salt = "BxA24L2F7Z"; // THIS WORKS
/* String key = "yX8OvWy1"; //These credentials are from https://www.payumoney.com/
String merchantId = "5826688"; //THIS DOESN'T WORK
String salt = "0vciMJBbaa"; //ERROR: "some error occurred, Try again"
*/
PayUmoneySdkInitilizer.PaymentParam.Builder builder = new PayUmoneySdkInitilizer.PaymentParam.Builder();
builder.setAmount(getAmount())
.setTnxId(txnId)
.setPhone(phone)
.setProductName(productName)
.setFirstName(firstName)
.setEmail(email)
.setsUrl(sUrl)
.setfUrl(fUrl)
.setUdf1(udf1)
.setUdf2(udf2)
.setUdf3(udf3)
.setUdf4(udf4)
.setUdf5(udf5)
.setIsDebug(isDebug) //Also can someone clarify if this should be true/false for live mode
.setKey(key)
.setMerchantId(merchantId);
PayUmoneySdkInitilizer.PaymentParam paymentParam = builder.build();
String hash = hashCal(key + "|" + txnId + "|" + getAmount() + "|" + productName + "|"
+ firstName + "|" + email + "|" + udf1 + "|" + udf2 + "|" + udf3 + "|" + udf4 + "|" + udf5 + "|" + salt);
Log.d("app_activity123", hash);
paymentParam.setMerchantHash(hash);
PayUmoneySdkInitilizer.startPaymentActivityForResult(MyActivity.this, paymentParam);
}
Extra Info: Test credentials weren't working initially. I had to contact the payu support team to activate the account after which the code was working fine. My employer said he has activated the live account so i don't know what is the issue here.
There are no other issues like mine here, the closest one is here PayuMoney Integration in Android : Some error occured! Try again and it is unanswered.

setIsDebug(boolean) you need to pass false as parameter in this method to use live payment and true when testing in live mode.
I've set it to false and used Real Merchant id,salt and key and it worked, no errors.
Hope this helps someone.

Debug into PayUmoneyActivity
ErrorResponse contains the actual error.
It may be hash mismatch or wrong key.
#override
public void onFailureResponse(ErrorResponse response, String tag) {
mProgressDialog.dismiss();
Toast.makeText(context, "Some error occured",
Toast.LENGTH_SHORT).show();
finish();
}
this method in PayUmoneyActivity does not show error from errorresponse. just the general error. which is very problematic to debug.

I think your problem is in the line
'PayUmoneySdkInitilizer.startPaymentActivityForResult(MyActivity.this, paymentParam);'.
The official document states that you have to start transaction by using
'PayUmoneyFlowManager.startPayUMoneyFlow(paymentParam,this, R.style.AppTheme_default, false);'

Amazon SNS& android titanium '=' is unencoded [duplicate]

Now I simplify the problem.
I try to directly copy and paste the query to confrim it use %3D instead of '='
var xhrSNS = Ti.Network.createHTTPClient({
onload :function(e) {
Ti.API.info("test Post query:" + JSON.stringify(e));
Ti.API.info(this.responseText);
},
onerror : function(e){
Ti.API.debug("test Create PlatForm Endpoint registerPush error:" + e.error);
Ti.API.info(this.responseText);
}
});
getUrl = "http://sns.ap-northeast-1.amazonaws.com?AWSAccessKeyId=AAAAAAAAAAAAAAA&Action=CreatePlatformEndpoint&PlatformApplicationArn=arn%3Aaws%3Asns%3Aap-northeast-1%3A776188326341%3Aapp%2FGCM%2Fmyapp&SignatureMethod=HmacSHA256&SignatureVersion=2&Timestamp=2016-04-03T15%3A05%3A51.465Z&Token=APA91bEiaB-902cRmwwgCwoqi2jRIJzzTIZNB7XduELuBKit_WF29tN5twrVW5t1BHpj07ARgwjzoc-I5xVur5K6I6ZQcnoErguUyi-VBHvuI5eY9HS4jq1J6KbIC05Etoe8indjpY9X&Version=2010-03-31&Signature=DzxQpP%2BcALS91C53eia6ZkBhxg3lQ32ctqiEmqKwwLA%3D";
xhrSNS.open('GET',getUrl);
xhrSNS.send();
Please see the last letter of getUrl, it surely use '%3D'.
But return is the same.
It makes a complaint that sentence include '=' delimiter.
[DEBUG] test Create PlatForm Endpoint registerPush error:400 : Bad Request
[INFO] <ErrorResponse xmlns="http://webservices.amazon.com/AWSFault/2005-15-09">
[INFO] <Error>
[INFO] <Type>Sender</Type>
[INFO] <Code>MalformedQueryString</Code>
[INFO] <Message>AWSAccessKeyId=AAAAAAAAAAAAAAA&Action=CreatePlatformEndpoint&PlatformApplicationArn=arn%3Aaws%3Asns%3Aap-northeast-1%3A776188326341%3Aapp%2FGCM%2Fmyapp&SignatureMethod=HmacSHA256&SignatureVersion=2&Timestamp=2016-04-03T15%3A05%3A51.465Z&Token=APA91bEiaB-902cRmwwgCwoqi2jRIJzzTIZNB7XduELuBKit_WF29tN5twrVW5t1BHpj07ARgwjzoc-I5xVur5K6I6ZQcnoErguUyi-VBHvuI5eY9HS4jq1J6KbIC05Etoe8indjpY9X&Version=2010-03-31&Signature=DzxQpP%2BcALS91C53eia6ZkBhxg3lQ32ctqiEmqKwwLA= is not valid; the value of a query string parameter may not contain a '=' delimiter</Message>
-----------------------------adding until here-----------------
I am using Amazon SNS API
I made url like this it works well on browser.
http://sns.ap-northeast-1.amazonaws.com?AWSAccessKeyId=AAAAAAAAAAAAA&Action=CreatePlatformEndpoint&PlatformApplicationArn=arn%3Aaws%3Asns%3Aap-northeast-1%3A776188326341%3Aapp%2FGCM%2Fmyapp&SignatureMethod=HmacSHA256&SignatureVersion=2&Timestamp=2016-04-01T21%3A06%3A29.861Z&Token=APA91bEiaB-902cRmwwgCwoqi2jRIJzzTIZNB7XduELuBKit_WF29tN5twrVW5t1BHpj07ARgwjzoc-I5xVur5K6I6ZQcnoErguUyi-VBHvuI5eY9HS4jq1J6KbIC05Etoe8indjpY9X&Version=2010-03-31&Signature=Dt9tXa0Rjl%2Ff6YxZ4JaPfsm%2BT%2BMX03gS712nIKKekAI%3D
However if I try from Android.
This returns 400 bad request.
<ErrorResponse xmlns="http://webservices.amazon.com/AWSFault/2005-15-09">
<Error>
<Type>Sender</Type>
<Code>MalformedQueryString</Code>
<Message>AWSAccessKeyId=AAAAAAAAAAAAA&Action=CreatePlatformEndpoint&PlatformApplicationArn=arn%3Aaws%3Asns%3Aap-northeast-1%3A776188326341%3Aapp%2FGCM%2Fmyapp&SignatureMethod=HmacSHA256&SignatureVersion=2&Timestamp=2016-04-01T21%3A06%3A29.861Z&Token=APA91bEiaB-902cRmwwgCwoqi2jRIJzzTIZNB7XduELuBKit_WF29tN5twrVW5t1BHpj07ARgwjzoc-I5xVur5K6I6ZQcnoErguUyi-VBHvuI5eY9HS4jq1J6KbIC05Etoe8indjpY9X&Version=2010-03-31&Signature=Dt9tXa0Rjl%2Ff6YxZ4JaPfsm%2BT%2BMX03gS712nIWUekAI=
is not valid; the value of a query string parameter may not contain a '=' delimiter</Message>
</Error>
<RequestId>5b40d988-af34-577a-8839-96f04a217dec</RequestId>
</ErrorResponse>
I think
the value of a query string parameter may not contain a '=' delimiter
is the cause of problem though, I cant figure out how to fix it.
The same code works on iPhone.
it doesn't work only from android.
I made URL strings from this function
var array = {
PlatformApplicationArn : Ti.App.global.androidArn
};
awsObj = getSignature("CreatePlatformEndpoint",date,awsUrl,event.registrationId,array);
var getUrl = "http://" + awsUrl + '?' + awsObj.str_para + "&Signature=" + awsObj.encodedString;
Ti.API.info('GETurl :' + getUrl);
xhrSNS.open('GET',getUrl);
function getSignature(action,date,awsUrl,token,array){
Ti.include('/jssha/jssha256.js');
var base = {
Action:action,
AWSAccessKeyId : Ti.App.global.awsAccessKey,
SignatureMethod : "HmacSHA256",
SignatureVersion :2,
Token: token,
Timestamp : date,
Version : "2010-03-31",
};
para = arrayMerge(array,base);
var para_array = [];
for(var pname in para){
para_array.push(pname + "=" + encodeURIComponent(para[pname]));
}
para_array.sort();
var str_para = para_array.join('&');
var str_signature = "GET" + "\n" + awsUrl + "\n" + "/" + "\n" + str_para;
console.log("str_signature:" + str_signature);
HMAC_SHA256_init(Ti.App.global.awsSecretKey);
HMAC_SHA256_write(str_signature);
var array_hash = HMAC_SHA256_finalize();
var str_hash = "";
for (var i = 0; i < array_hash.length; i++) {
str_hash += String.fromCharCode(array_hash[i]);
}
var awsObj = new Object();
awsObj.encodedString = encodeURIComponent(base64encode(str_hash));
Ti.API.info("awsObj.encodedString:" + awsObj.encodedString); // I have confirmed encodedString is correct here.
awsObj.str_para = str_para;
return awsObj;
}

URL in browser: Signature=Dt9tXa0Rjl%2Ff6YxZ4JaPfsm%2BT%2BMX03gS712nIKKekAI%3D
URL in Android: Signature=Dt9tXa0Rjl%2Ff6YxZ4JaPfsm%2BT%2BMX03gS712nIWUekAI=

How to get the device contact using phonegap 2.0.0?

Am developing a android application using phonegap(Cordova 2.0.0). I need the retrieve the device contacts. I have tried with code given this doc
http://docs.phonegap.com/en/2.0.0/cordova_contacts_contacts.md.html#Contacts
my code as follows
$("#shareoptions3").live('click',function(){
var options = new ContactFindOptions();
options.multiple = true;
var fields = ["displayName","phoneNumbers"];//["displayName", "name","phoneNumbers"];
navigator.contacts.find(fields, onContactSuccess, onContactError, options);
});
function onContactSuccess(contacts) {//alert(contacts.length);
for (var i=0; i<contacts.length; i++) {
// display phone numbers
for (var j=0; j<contacts[i].phoneNumbers.length; j++) {
alert("Type: " + contacts[i].phoneNumbers[j].type + "\n" +
"Value: " + contacts[i].phoneNumbers[j].value + "\n" +
"Preferred: " + contacts[i].phoneNumbers[j].pref);
}
}
};
// onError: Failed to get the contacts
//
function onContactError(contactError) {
console.log('Error in getting contacts!');
}
I am getting message in Logcat like this :
Error in success callback: Contacts3 = TypeError: Cannot read property 'length' of null at file:///android_asset/www/JS/cordova-2.0.0.js:258
Please help me to sort out this problem.

One of your contact may not have a telephone number, and that is why you'll get a null value instead of a phone number.
So, in your for loop, one of the contacts[i].phoneNumbers.length wil generate an error.
I suggest you to first check if the phoneNumbers is null or not, before displaying / alerting it, by using:
if(contacts[i].phoneNumbers != null)
In the end, you may try something like this:
$("#shareoptions3").live('click',function(){
var options = new ContactFindOptions();
options.multiple = true;
var fields = ["displayName","phoneNumbers"];//["displayName", "name","phoneNumbers"];
navigator.contacts.find(fields, onContactSuccess, onContactError, options);
});
function onContactSuccess(contacts) {//alert(contacts.length);
for (var i=0; i<contacts.length; i++) {
// display phone numbers
if(contacts[i].phoneNumbers != null) // Checking if not null
for (var j=0; j<contacts[i].phoneNumbers.length; j++) {
alert("Type: " + contacts[i].phoneNumbers[j].type + "\n" +
"Value: " + contacts[i].phoneNumbers[j].value + "\n" +
"Preferred: " + contacts[i].phoneNumbers[j].pref);
}
}
};
// onError: Failed to get the contacts
//
function onContactError(contactError) {
console.log('Error in getting contacts!');
}
Hope this helps, let me know if this works for you.

How can I write a regular expression for this in android?

I am having a string(number) with special characters. I want to search for a sub-string(comprising of digits only) & also I want to detect the starting index & ending index of matching sub-string in the string.
For example: main string: (+91)-1231212 1231
Sub-string to search: 1212
Currently I am using the following code to do this but in place of 1212,it searched for 12312. For other cases, it works fine.
String sss0 = "1212";
String sss1 = "(+91)-1231212 1231";
sss0 = sss0.replaceAll("[^\\d]","");
System.out.println("*************************"+sss0);
String ptn = "" + sss0.charAt(0);
for(int jj=0; jj<sss0.length()-1; jj++){
ptn += "[^" + sss0.charAt(jj) + sss0.charAt(jj+1) + "]*?" + sss0.charAt(jj+1);
}
System.out.println("ptn: " + ptn);
Pattern p300 = Pattern.compile(ptn);
Matcher m300 = p300.matcher(sss1);
if(m300.find()){
System.out.println("start, stop: " + m300.start() + "," + (m300.end()-1 ));
System.out.println("substring: " + sss1.substring(m300.start(), m300.end()));
}
Please help me. Thanks in advance.

Try this :
int start = sss1.indexOf(sss0);
if(start != -1) {
System.out.println("Start : " + start);
System.out.println("End : " + start.length()); //maybe add +1 here depending on what you mean by end index.
}
You can also put this in a loop to find all occurences of the substring.

pseudocode:
pattern = ""
foreach char c in sss0:
pattern += c + "[^0-9]*"
found_substring = match(pattern, sss1)
the idea being to intersperse the literal characters you're looking for with the pattern that you're willing to skip over.