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Diffstat (limited to 'webcam/com/marstonstudio/UploadPostHelper.as')
| -rw-r--r-- | webcam/com/marstonstudio/UploadPostHelper.as | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/webcam/com/marstonstudio/UploadPostHelper.as b/webcam/com/marstonstudio/UploadPostHelper.as new file mode 100644 index 0000000..857bc42 --- /dev/null +++ b/webcam/com/marstonstudio/UploadPostHelper.as @@ -0,0 +1,158 @@ +package com.marstonstudio +{ + + import flash.events.*; + import flash.net.*; + import flash.utils.ByteArray; + import flash.utils.Endian; + + /** + * Take a fileName, byteArray, and parameters object as input and return ByteArray post data suitable for a UrlRequest as output + * + * @see http://marstonstudio.com/?p=36 + * @see http://www.w3.org/TR/html4/interact/forms.html + * @see http://www.jooce.com/blog/?p=143 + * @see http://www.jooce.com/blog/wp%2Dcontent/uploads/2007/06/uploadFile.txt + * @see http://blog.je2050.de/2006/05/01/save-bytearray-to-file-with-php/ + * + * @author Jonathan Marston + * @version 2007.08.19 + * + * This work is licensed under a Creative Commons Attribution NonCommercial ShareAlike 3.0 License. + * @see http://creativecommons.org/licenses/by-nc-sa/3.0/ + * + */ + public class UploadPostHelper { + + /** + * Boundary used to break up different parts of the http POST body + */ + private static var _boundary:String = ""; + + /** + * Get the boundary for the post. + * Must be passed as part of the contentType of the UrlRequest + */ + public static function getBoundary():String { + + if(_boundary.length == 0) { + for (var i:int = 0; i < 0x20; i++ ) { + _boundary += String.fromCharCode( int( 97 + Math.random() * 25 ) ); + } + } + + return _boundary; + } + + /** + * Create post data to send in a UrlRequest + */ + public static function getPostData(fileName:String, byteArray:ByteArray, parameters:Object = null):ByteArray { + + var i: int; + var bytes:String; + + var postData:ByteArray = new ByteArray(); + postData.endian = Endian.BIG_ENDIAN; + + //add Filename to parameters + if(parameters == null) { + parameters = new Object(); + } + parameters.Filename = fileName; + + //add parameters to postData + for(var name:String in parameters) { + postData = BOUNDARY(postData); + postData = LINEBREAK(postData); + bytes = 'Content-Disposition: form-data; name="' + name + '"'; + for ( i = 0; i < bytes.length; i++ ) { + postData.writeByte( bytes.charCodeAt(i) ); + } + postData = LINEBREAK(postData); + postData = LINEBREAK(postData); + postData.writeUTFBytes(parameters[name]); + postData = LINEBREAK(postData); + } + + //add Filedata to postData + postData = BOUNDARY(postData); + postData = LINEBREAK(postData); + bytes = 'Content-Disposition: form-data; name="Filedata"; filename="'; + for ( i = 0; i < bytes.length; i++ ) { + postData.writeByte( bytes.charCodeAt(i) ); + } + postData.writeUTFBytes(fileName); + postData = QUOTATIONMARK(postData); + postData = LINEBREAK(postData); + bytes = 'Content-Type: application/octet-stream'; + for ( i = 0; i < bytes.length; i++ ) { + postData.writeByte( bytes.charCodeAt(i) ); + } + postData = LINEBREAK(postData); + postData = LINEBREAK(postData); + postData.writeBytes(byteArray, 0, byteArray.length); + postData = LINEBREAK(postData); + + //add upload filed to postData + postData = LINEBREAK(postData); + postData = BOUNDARY(postData); + postData = LINEBREAK(postData); + bytes = 'Content-Disposition: form-data; name="Upload"'; + for ( i = 0; i < bytes.length; i++ ) { + postData.writeByte( bytes.charCodeAt(i) ); + } + postData = LINEBREAK(postData); + postData = LINEBREAK(postData); + bytes = 'Submit Query'; + for ( i = 0; i < bytes.length; i++ ) { + postData.writeByte( bytes.charCodeAt(i) ); + } + postData = LINEBREAK(postData); + + //closing boundary + postData = BOUNDARY(postData); + postData = DOUBLEDASH(postData); + + return postData; + } + + /** + * Add a boundary to the PostData with leading doubledash + */ + private static function BOUNDARY(p:ByteArray):ByteArray { + var l:int = UploadPostHelper.getBoundary().length; + + p = DOUBLEDASH(p); + for (var i:int = 0; i < l; i++ ) { + p.writeByte( _boundary.charCodeAt( i ) ); + } + return p; + } + + /** + * Add one linebreak + */ + private static function LINEBREAK(p:ByteArray):ByteArray { + p.writeShort(0x0d0a); + return p; + } + + /** + * Add quotation mark + */ + private static function QUOTATIONMARK(p:ByteArray):ByteArray { + p.writeByte(0x22); + return p; + } + + /** + * Add Double Dash + */ + private static function DOUBLEDASH(p:ByteArray):ByteArray { + p.writeShort(0x2d2d); + return p; + } + + } +}
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