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@atuttle
Created January 28, 2013 19:11
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Upload files to Amazon S3 with ColdFusion. This is heavily based on code from Joe Danziger's s3.cfc: http://amazons3.riaforge.org/
<cffunction name="uploadToAmazonS3">
<cfargument name="fileName" required="true" />
<cfargument name="contentType" required="true" />
<cfargument name="data" required="true" />
<cfargument name="acl" default="public-read" />
<cfargument name="storageClass" default="STANDARD" />
<cfargument name="HTTPtimeout" default="300" />
<cfargument name="bucket" default="#getProperty('EmailAttachmentS3Bucket')#" />
<cfargument name="accessKeyId" default="#getProperty('EmailAttachmentS3AccessKeyId')#" />
<cfargument name="secretKey" default="#getProperty('EmailAttachmentS3SecretKey')#" />
<cfset var dateTimeString = GetHTTPTimeString(Now())>
<!--- authorization stuff --->
<cfset var cs = "PUT\n\n#arguments.contentType#\n#dateTimeString#\nx-amz-acl:#arguments.acl#\nx-amz-storage-class:#arguments.storageClass#\n/#arguments.bucket#/#arguments.fileName#">
<cfset var signature = createSignature(cs, arguments.secretKey)>
<cfset var url = "http://s3.amazonaws.com/#arguments.bucket#/#arguments.fileName#" />
<cfhttp method="PUT" url="#url#" timeout="#arguments.HTTPtimeout#">
<cfhttpparam type="header" name="Authorization" value="AWS #arguments.accessKeyId#:#signature#">
<cfhttpparam type="header" name="Content-Type" value="#arguments.contentType#">
<cfhttpparam type="header" name="Date" value="#dateTimeString#">
<cfhttpparam type="header" name="x-amz-acl" value="#arguments.acl#">
<cfhttpparam type="header" name="x-amz-storage-class" value="#arguments.storageClass#">
<cfhttpparam type="body" value="#arguments.data#">
</cfhttp>
</cffunction>
<cffunction name="HMAC_SHA1" returntype="binary" access="private" output="false" hint="NSA SHA-1 Algorithm">
<cfargument name="signKey" type="string" required="true" />
<cfargument name="signMessage" type="string" required="true" />
<cfset var jMsg = JavaCast("string",arguments.signMessage).getBytes("iso-8859-1") />
<cfset var jKey = JavaCast("string",arguments.signKey).getBytes("iso-8859-1") />
<cfset var key = createObject("java","javax.crypto.spec.SecretKeySpec") />
<cfset var mac = createObject("java","javax.crypto.Mac") />
<cfset key = key.init(jKey,"HmacSHA1") />
<cfset mac = mac.getInstance(key.getAlgorithm()) />
<cfset mac.init(key) />
<cfset mac.update(jMsg) />
<cfreturn mac.doFinal() />
</cffunction>
<cffunction name="createSignature" returntype="string" access="public" output="false">
<cfargument name="in" required="true" />
<cfargument name="secretKey" required="true" />
<!--- Replace "\n" with "chr(10) to get a correct digest --->
<cfset var fixedData = replace(arguments.in,"\n", chr(10), "all") />
<!--- Calculate the hash of the information --->
<cfset var digest = HMAC_SHA1(arguments.secretKey,fixedData) />
<!--- fix the returned data to be a proper signature --->
<cfset var signature = ToBase64(digest) />
<cfreturn signature />
</cffunction>
@drutledge
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This is a great, simple API implementation. Perfect for simple scenarios or to use as a starting point for more complex projects. Thanks for posting!

@robenr
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robenr commented Nov 7, 2015

From Version 9.0.1 Coldfusion natively supports file upload to Amazon s3

<cfset s3bucket = "s3://yourbuketname/">
<cffile action="upload" filefield="filename" destination="#s3bucket#" nameconflict="makeunique" charset="utf-8" />

@laurencehoess
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Because S3 doesn't recognize directories, you will need to put the file name in the destination and remove the filefield.

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