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Beating my head with query to Amazon AWS with coldfusion

Posted on 2014-12-01
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Last Modified: 2014-12-29
I have been beating my head senseless for sometime now with trying to query amazon's aws.  When I run my code I get an error stating that the signature is invalid so now I turn to you Experts for your valued help.

Here is my code.

 <cffunction name="awsurl" returntype="string" access="public" output="No">
 <cfargument name="Query" type="string" required="true" />
 <cfargument name="AWSAccessKeyId" type="string" required="true"  default="AKIAJxxxxxxxx"/>
 <cfargument name="SecretKey" type="string" required="true" default="xxxxxxxxxxxxx>
 <cfargument name="Host" type="string" default="ec2.amazonaws.com" />
 <cfargument name="Methord" type="string" default="GET" />
 <cfargument name="URI" type="string" default="/" />
 <cfargument name="SignatureVersion" type="string" default="2" />
 <cfargument name="Version" type="date" default="2012-04-01" />
 <cfargument name="http" type="string" default="https" hint="https|http" />
 
 <!--- add common values --->
 <cfset local.Time = dateConvert("local2Utc",now())>
 <cfset local.Time = "#DateFormat(local.Time,'yyyy-mm-dd')#T#TimeFormat(local.Time,'HH:mm:ss')#">
 <cfset arguments.Query = "#arguments.Query#&Timestamp=#local.Time#&SignatureVersion=#arguments.SignatureVersion#&Version=#arguments.Version#&SignatureMethod=HmacSHA256">
 
 <!--- sort QueryString --->
 <cfset arguments.Query = ListToArray(arguments.Query,'&')>
 <cfset ArraySort(arguments.Query,'text')>
 <!--- prepend AccessKeyID --->
 <cfset ArrayPrepend(arguments.Query, "AWSAccessKeyId=#arguments.AWSAccessKeyId#")>
<!--- url encode each values --->
 <cfset local.SortedString = ArrayNew(1)>
 <cfloop from="1" to="#ArrayLen(arguments.Query)#" index="local.i">
 <cfset local.value = arguments.Query[local.i]>
 <cfif listlen(local.value,'=') gt 1>
 <cfset ArrayAppend(local.SortedString,"#listfirst(local.value,'=')#=#reservedEncod(listlast(local.value,'='))#")>
 <cfelse>
 <cfset ArrayAppend(local.SortedString,"#local.value#")>
 </cfif>
 </cfloop>
<!--- create signature string --->
 <cfset local.toEncode = "#arguments.Methord##chr(10)##arguments.Host##chr(10)##arguments.URI##chr(10)##ArrayToList(local.SortedString,'&')#">
 <cfoutput><pre>#local.toEncode#</pre></cfoutput>
 <!--- encode Signature String --->
 <cfset local.Signature = URLEncodedFormat(ToBase64(HMAC_SHA256(local.toEncode,arguments.SecretKey)))>
 
 <cfset arguments.Query = ArrayToList(arguments.Query,'&')>
 <cfset arguments.Query = "#arguments.http#://#arguments.Host##arguments.URI#?#arguments.Query#&Signature=#local.Signature#">
 <cfreturn arguments.Query>
</cffunction>
<!--- ********************************************************************* --->
<cffunction name="reservedEncod" returntype="string" access="public" output="no">
 <cfargument name="string" type="string" required="true" />
 
 <cfset local.reserved = "!|##|$|&|'|(|)|*|+|,|/|:|;|=|?|@|[|]| ">
 <cfloop list="#local.reserved#" index="local.i" delimiters="|">
 <cfif find(local.i,arguments.string)>
 <cfset arguments.string = replace(arguments.string,local.i, "%#ucase(FormatBaseN(Asc(local.i),'16'))#", 'all')>
 </cfif>
 </cfloop>
 <cfreturn arguments.string>
</cffunction>
<!--- ********************************************************************* --->
<cffunction name="HMAC_SHA256" returntype="binary" access="public" output="no">
 <cfargument name="signMessage" type="string" required="true" />
 <cfargument name="signKey" type="string" required="true" />
 <cfset local.jMsg = JavaCast("string",arguments.signMessage).getBytes("iso-8859-1") />
 <cfset local.jKey = JavaCast("string",arguments.signKey).getBytes("iso-8859-1") />
 <cfset local.key = createObject("java","javax.crypto.spec.SecretKeySpec") />
 <cfset local.mac = createObject("java","javax.crypto.Mac") />
 <cfset local.key = local.key.init(local.jKey,"HmacSHA256") />
 <cfset local.mac = local.mac.getInstance(local.key.getAlgorithm()) />
 <cfset local.mac.init(local.key) />
 <cfset local.mac.update(local.jMsg) />
 <cfreturn local.mac.doFinal() />
</cffunction>
0
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Question by:jriver12
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13 Comments
 

Author Comment

by:jriver12
ID: 40474233
Also have tried with JavaScript:
<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />
        <meta name="format-detection" content="telephone=no" />
        <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
        <title>Amazon</title>
</head>

<body>



   
<div class="container">







</div>




<script src="jquery.js"></script>
<script src="jquery.xdomainajax.js"></script>

<script>

$(document).ready(function(){

 
$.ajax({
    url: 'http://ecs.amazonaws.com/onca/xml?'+
      'AWSAccessKeyId=xxxxxxxxxxxx'+
      '&AssociateTag=xxxxxxxx'+
      '&Keywords=B004C5P522'+
      '&Operation=ItemSearch'+
      '&SearchIndex=Billards-Sports-Miscellaneous-Billard-Sumsang'+
      '&Service=AWSECommerceService'+
      '&Timestamp=2014-07-17T17%3A47%3A17.000Z'+
      '&Signature=xxxxxxxxxxx,
    type: 'get',
    dataType: "xml",
    success: function(res) {
        console.log(res.responseText);

        var xml = $.parseXML(res.responseText);
        var $tmp = $( xml );
        var tmp2 = $tmp.find( "head" );
        $('.container').append(tmp2.text()+'<br>');


    },
      error: function(){
            alert('failed')
      }
});


});
</script>

</body>
</html>
0
 

Author Comment

by:jriver12
ID: 40474314
my third attempt see attached. (error with complex variables)
amazonint3.txt
0
 
LVL 25

Accepted Solution

by:
dgrafx earned 2000 total points
ID: 40476395
one thing to check is if it is expiring too soon.
add some minutes to the time stamp.

also look at this: http://www.petefreitag.com/item/833.cfm
0
Not sure which OpenStack Certification to get?

So you’ve realized you might want to get certified in OpenStack, but you’re not sure what the benefits might be or even which one you should take. You know there are several certification courses you can choose from, but how do you know which one is right for you?

 

Author Comment

by:jriver12
ID: 40476532
got it working using this method(attached) however it is only returning the first few of 100/1000 results.  I need to view and return all and am hitting a wall. any suggestions would be great.
EEF2.txt
0
 
LVL 25

Expert Comment

by:dgrafx
ID: 40476552
0
 

Author Comment

by:jriver12
ID: 40476559
Thanks for the pointer but Im not using php, I'm Using ColdFusion.

Not to mention I am clueless on php.
0
 
LVL 25

Expert Comment

by:dgrafx
ID: 40476773
yes - i know you are on CF.
you are typically hard pressed to find CF code examples - especially from large companies - so we usually read through PHP or whatever and glean what we can understand.
note that you don't need to understand everything - just looking for clues ...
0
 
LVL 58

Expert Comment

by:Gary
ID: 40521174
I've requested that this question be deleted for the following reason:

The question has either no comments or not enough useful information to be called an "answer".
0
 
LVL 25

Expert Comment

by:dgrafx
ID: 40521175
I would say that I answered his question - see this post: http:#a40476395 but poster then asked for help with the number of records it returned - which was not in the original question.
I did try to provide more help but admittedly did not provide a lot of useful additional info.

Thanks ...
0
 

Author Comment

by:jriver12
ID: 40521666
Points have been awarded for answer.  Dgrafx is correct in declaring that an answer was provided which helped in resolving initial issue.
0
 
LVL 25

Expert Comment

by:dgrafx
ID: 40521997
Thanks !
0
 

Author Comment

by:jriver12
ID: 40522009
Thank you for your assistance, excuse my delay.
0

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