I am trying to change the access policy on an existing bucket. I am using
Amazon S3 REST Wrapper by Joe Danziger. Using his cfc I can create, upload and
delete buckets and objects - everything works! I added a function getACL() that
will retrieve the ACL on a bucket (which works):
<cffunction name="getACL" access="public" output="false">
<cfargument name="bucketName" type="string" required="yes">
<cfset var dateTimeString = GetHTTPTimeString(Now())>
<!--- Create a canonical string to send based on operation requested --->
<cfset var cs = "GET\n\n\n#dateTimeString#\n/#arguments.bucketName#?acl">
<!--- Create a proper signature --->
<cfset var signature = createSignature(cs)>
<cfhttp method="GET" url="http://s3.amazonaws.com/#arguments.bucketName#?acl";>
<cfhttpparam type="header" name="Date" value="#dateTimeString#">
<cfhttpparam type="header" name="Authorization" value="AWS
variables.accessKeyId#:#signature#">
</cfhttp>
<cfreturn cfhttp.fileContent>
</cffunction>
Now I am trying to change the ACL:
<cffunction name="changeACL" access="public" output="false">
<cfargument name="bucketName" type="string" required="yes">
<cfargument name="acl" type="string" required="yes">
<cfset var dateTimeString = GetHTTPTimeString(Now())>
<!--- Create a canonical string to send based on operation requested --->
<cfset var cs =
"PUT\n\n\n\x-amz-acl:#arguments.acl#\ntext/plain\n0\n#dateTimeString#\n#arguments.bucketName#?acl">
<!--- Create a proper signature --->
<cfset var signature = createSignature(cs)>
<cfhttp method="PUT" url="http://s3.amazonaws.com/#arguments.bucketName#?acl";>
<!--- x-amz-acl is private, public-read, public-read-write or
authenticated-read --->
<cfhttpparam type="header" name="x-amz-acl" value="#arguments.acl#">
<cfhttpparam type="header" name="Content-Type" value="text/plain">
<cfhttpparam type="header" name="Content-Length" value="0">
<cfhttpparam type="header" name="Date" value="#dateTimeString#">
<cfhttpparam type="header" name="Authorization" value="AWS
#variables.accessKeyId#:#signature#">
</cfhttp>
<cfreturn cfhttp.fileContent> <!--- header --->
</cffunction>
I keep getting an error saying the signatures don't match - I'm thinking that
there's something wrong with the string "cs" not matching the header but I seem
to be hitting a brick wall with this one.
Any ideas?
Andrew.
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