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// ImageShackAction.cs
//
// GNOME Do is the legal property of its developers, whose names are too
// numerous to list here. Please refer to the COPYRIGHT file distributed with
// this source distribution.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along with
// this program. If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
using Do.Addins;
using Do.Universe;
using Mono.Unix;
namespace ImageShack
{
public class ImageShackAction : AbstractAction, IConfigurable
{
public override string Name
{
get { return Catalog.GetString ("Upload to ImageShack"); }
}
public override string Description
{
get { return Catalog.GetString ("Uploads the image to ImageShack."); }
}
public override string Icon
{
get { return "imageshack.png@" + GetType ().Assembly.FullName; }
}
public override Type[] SupportedItemTypes
{
get {
return new Type[] {
typeof (IFileItem)
};
}
}
public override bool SupportsItem (IItem item)
{
if (item is FileItem) {
if ((item as FileItem).MimeType.StartsWith ("image/")) {
return true;
}
}
return false;
}
public Gtk.Bin GetConfiguration ()
{
return new ImageShackConfig();
}
public override IItem[] Perform (IItem[] items, IItem[] modifierItems)
{
try {
List<IItem> returnItems = new List<IItem> ();
StringBuilder notificationUrlList = new StringBuilder();
notificationUrlList.AppendLine (Catalog.GetString ("Image urls: "));
foreach (IItem item in items) {
FileItem fileItem = item as FileItem;
string fileValidationError = ValidateFileForUpload (fileItem.Path);
if (fileValidationError != null) {
returnItems.Add (new TextItem (fileValidationError + " - " + fileItem.Path ));
continue;
}
NotificationBridge.ShowMessage (
Catalog.GetString ("ImageShack"),
Catalog.GetString ("Do is uploading your image... Please wait a moment..."),
fileItem.Path);
string url = PostToImageShack (fileItem.Path, fileItem.MimeType);
notificationUrlList.AppendLine (url);
returnItems.Add (new TextItem (url));
}
/*
NotificationBridge.ShowMessage (
Catalog.GetString ("ImageShack"),
notificationUrlList.ToString ());
*/
return returnItems.ToArray ();
}
catch (Exception e) {
Console.Error.WriteLine (Catalog.GetString ("ImageShack exception: ") + e.Message);
return new IItem[] { new TextItem (Catalog.GetString ("An error occured while uploading to ImageShack.")) };
}
}
private static string ValidateFileForUpload (string file)
{
FileInfo fi = new FileInfo(file);
long fileSize = fi.Length;
// 1.5MB limit
if (fileSize > 1572864) {
return Catalog.GetString ("File size exceeds ImageShack's 1.5MB limit.");
}
return null;
}
private static string PostToImageShack (string file, string contentType)
{
string boundary = "----------" + DateTime.Now.Ticks.ToString ("x");
HttpWebRequest request = (HttpWebRequest) WebRequest.Create ("http://www.imageshack.us/index.php");
request.Method = "POST";
request.ContentType = "multipart/form-data ; boundary=" + boundary;
if (!String.IsNullOrEmpty (ImageShackConfig.RegistrationCode)) {
request.CookieContainer = new CookieContainer ();
Cookie imageshackCookie = new Cookie ("myimages", ImageShackConfig.RegistrationCode, "/", ".imageshack.us");
request.CookieContainer.Add (imageshackCookie);
}
StringBuilder sb = new StringBuilder ();
sb.Append ("--");
sb.Append (boundary);
sb.Append ("\r\n");
sb.Append ("Content-Disposition: form-data; name=\"");
sb.Append ("fileupload");
sb.Append ("\"; filename=\"");
sb.Append (Path.GetFileName(file));
sb.Append ("\"");
sb.Append ("\r\n");
sb.Append ("Content-Type: ");
sb.Append (contentType);
sb.Append ("\r\n");
sb.Append ("\r\n");
string header = sb.ToString ();
byte[] headerBytes = Encoding.UTF8.GetBytes (header);
byte[] boundaryBytes = Encoding.ASCII.GetBytes ("\r\n--" + boundary + "\r\n");
using (FileStream fileStream = new FileStream (file, FileMode.Open, FileAccess.Read)) {
long length = headerBytes.Length + fileStream.Length + boundaryBytes.Length;
request.ContentLength = length;
using (Stream requestStream = request.GetRequestStream ()) {
requestStream.Write (headerBytes, 0, headerBytes.Length);
byte[] buffer = new Byte[checked((uint)Math.Min (4096, (int)fileStream.Length))];
int bytesRead = 0;
while ((bytesRead = fileStream.Read (buffer, 0, buffer.Length)) != 0) {
requestStream.Write (buffer, 0, bytesRead);
}
requestStream.Write (boundaryBytes, 0, boundaryBytes.Length);
}
}
string responseText = "";
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse ()) {
using (Stream responseStream = response.GetResponseStream ()) {
using (StreamReader reader = new StreamReader (responseStream)) {
responseText = reader.ReadToEnd ();
}
}
}
return GetUrlFromResponseText (responseText);
}
private static string GetUrlFromResponseText (string responseText)
{
Regex directUrlPattern = new Regex ("<input type=\"text\" onClick=\"track\\('direct'\\).*? value=\"(.*?)\"/>");
Match directUrl = directUrlPattern.Match (responseText);
string url = directUrl.Groups[1].Value;
if (url == string.Empty) {
throw new Exception (Catalog.GetString ("Parsed url was empty. ImageShack has probably changed its format."));
}
return url;
}
}
}
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