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POjavascript / php - porting amazon awis example from php to javascript
 

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  1. POjavascript / php - porting amazon awis example from php to javascript
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    <p>Hi I'm trying to convert the PHP Code example for an AWIS request found here:</p> <p><a href="http://aws.amazon.com/code/AWIS/402" rel="nofollow">http://aws.amazon.com/code/AWIS/402</a></p> <p>to javascript / jquery. I feel like I'm very close, but I'm getting an "unauthorized" 401 response. I would love to get this up and running, and I was wondering if anyone could tell me what I'm doing wrong, or point me in the direction of an example using javascript. </p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;title&gt;AWIS&lt;/title&gt; &lt;script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="http://crypto-js.googlecode.com/files/2.3.0-crypto-sha256-hmac.js"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="http://crypto-js.googlecode.com/files/2.3.0-crypto-min.js"&gt;&lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="output"&gt;&lt;/div&gt; &lt;script&gt; var actionName = 'UrlInfo'; var responseGroupName = 'Rank,LinksInCount'; var serviceHost = 'awis.amazonaws.com'; var count = 10; var startNum = 1; var sigVersion = '2'; var hashVersion = 'HmacSHA256'; var accessKeyID = 'XXXAJA664T37BDNPSXXX'; var accessKey = 'XXXoImq0sZ4J/vYRewLuNjPFXYQ809DfLmzcpXXX'; var site = 'http://site.com'; function getURLInfo(){ var queryParams = buildQueryParams(); var sig = generateSignature(queryParams); var requestURL = 'http://' + serviceHost + '/?' + queryParams + '&amp;Signature=' + sig; console.log('requestURL:' + requestURL); $.ajax({ type: 'GET', url: requestURL, dataType: 'xml', crossDomain: true, error: function(jqXHR,textStatus, errorThrown){ console.log(textStatus + "|" + errorThrown) }, success: function(data, textStatus, jqXHR){ console.log(data); } }); } function ISODateString(d){ function pad(n){return n&lt;10 ? '0'+n : n} return d.getUTCFullYear()+'-' + pad(d.getUTCMonth()+1)+'-' + pad(d.getUTCDate())+'T' + pad(d.getUTCHours())+':' + pad(d.getUTCMinutes())+':' + pad(d.getUTCSeconds())+'.000Z' } function getTimeStamp(){ var d = new Date(); var now = ISODateString(d); //var hardcoded_time = "2011-10-28T16:33:03.000Z"; //USE THIS TO TEST BETWEEN SAMPLE PHP AND JS return now; } function buildQueryParams(){ var params = {}; params.AWSAccessKeyId = accessKeyID; params.Action = actionName; params.Count = count; params.ResponseGroup = responseGroupName; params.SignatureMethod = hashVersion; params.SignatureVersion = sigVersion; params.Start = startNum; params.Timestamp = getTimeStamp(); params.Url = site; paramString = $.param(params); return paramString; } function generateSignature(sigParams){ var sign = "GET\n" + serviceHost + "\n/\n" + sigParams; console.log("SIGN: \n" + sign); var sigHash = Crypto.HMAC(Crypto.SHA256, sign, accessKey, { asString: true }); console.log("HMAC:" + sigHash); var sigBytes = Crypto.charenc.Binary.stringToBytes(sigHash); var sig64 = Crypto.util.bytesToBase64(sigBytes); console.log("BASE 64: " + sig64); var sigEnc = encodeURIComponent(sig64); console.log("ENCODED URL: " + sigEnc) return sigEnc; } function awisResponse(response){ console.log(response); } getURLInfo(); &lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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    1. COAs to your last question, wouldn't it generally be a bad idea to have a secret key sitting on the client?
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    2. COAlso... am I missing the part where you're doing the base64 encoding?
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    3. COYes and yes. I've modified the encoding for base64 - but I still can't seem to get in. As for the access key - I don't really understand how you would accomplish this any other way. Even if I use PHP, the key has to reside in the code somewhere, right? What's the best way to retrieve the access key value?
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