Solved

Beating my head with query to Amazon AWS with coldfusion

Posted on 2014-12-01
13
131 Views
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
Comment
Question by:jriver12
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 6
  • 5
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 500 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
DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

 

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

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This is an updated version of a post made on my blog over 3 years ago. It is unfortunately, still very relevant as we continue to see both SQLi (SQL injection) and XSS (cross site scripting) attacks hitting some of the most recognizable website and …
The Confluence of Individual Knowledge and the Collective Intelligence At this writing (summer 2013) the term API (http://dictionary.reference.com/browse/API?s=t) has made its way into the popular lexicon of the English language.  A few years ago, …
The purpose of this video is to demonstrate how to set up the WordPress backend so that each page automatically generates a Mailchimp signup form in the sidebar. This will be demonstrated using a Windows 8 PC. Tools Used are Photoshop, Awesome…

749 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question