Handle partial downloads due to incorrect headers (fixes #1517)

deluge/core/core.py

@@ -237,7 +237,7 @@ class Core(component.Component):
         :returns: a Deferred which returns the torrent_id as a str or None
         """
         log.info("Attempting to add url %s", url)
-        def on_get_file(filename):
+        def on_download_success(filename):
             # We got the file, so add it to the session
             f = open(filename, "rb")
             data = f.read()
@@ -248,15 +248,20 @@ class Core(component.Component):
                 log.warning("Couldn't remove temp file: %s", e)
             return self.add_torrent_file(filename, base64.encodestring(data), options)
 
-        def on_get_file_error(failure):
-            # Log the error and pass the failure onto the client
-            log.error("Error occured downloading torrent from %s", url)
-            log.error("Reason: %s", failure.getErrorMessage())
-            return failure
+        def on_download_fail(failure):
+            if failure.check(twisted.web.client.PartialDownloadError):
+                result = download_file(url, tempfile.mkstemp()[1], headers=headers, force_filename=True,
+                                       allow_compression=False)
+                result.addCallbacks(on_download_success, on_download_fail)
+            else:
+                # Log the error and pass the failure onto the client
+                log.error("Error occured downloading torrent from %s", url)
+                log.error("Reason: %s", failure.getErrorMessage())
+                result = failure
+            return result
 
         d = download_file(url, tempfile.mkstemp()[1], headers=headers, force_filename=True)
-        d.addCallback(on_get_file)
-        d.addErrback(on_get_file_error)
+        d.addCallbacks(on_download_success, on_download_fail)
         return d
 
     @export

deluge/ui/gtkui/addtorrentdialog.py

@@ -44,7 +44,9 @@ import os
 
 import pkg_resources
 
+import twisted.web.client
 from deluge.ui.client import client
+from deluge.httpdownloader import download_file
 import deluge.component as component
 import listview
 from deluge.configmanager import ConfigManager
@@ -651,14 +653,18 @@ class AddTorrentDialog(component.Component):
             dialog.destroy()
 
         def on_download_fail(result):
-            log.debug("Download failed: %s", result)
-            dialog.destroy()
-            dialogs.ErrorDialog(_("Download Failed"), _("Failed to download : %s" % url), details=result.getErrorMessage(), parent=self.dialog).run()
+            if result.check(twisted.web.client.PartialDownloadError):
+                result = download_file(url, tmp_file, on_part, allow_compression=False)
+                result.addCallbacks(on_download_success, on_download_fail)
+            else:
+                log.debug("Download failed: %s", result)
+                dialog.destroy()
+                dialogs.ErrorDialog(_("Download Failed"), _("Failed to download : %s" % url),
+                                    details=result.getErrorMessage(), parent=self.dialog).run()
+            return result
 
-        import deluge.httpdownloader
-        d = deluge.httpdownloader.download_file(url, tmp_file, on_part)
-        d.addCallback(on_download_success)
-        d.addErrback(on_download_fail)
+        d = download_file(url, tmp_file, on_part)
+        d.addCallbacks(on_download_success, on_download_fail)
 
     def _on_button_hash_clicked(self, widget):
         log.debug("_on_button_hash_clicked")

deluge/ui/web/json_api.py

@@ -45,6 +45,7 @@ from types import FunctionType
 from twisted.internet import reactor
 from twisted.internet.defer import Deferred, DeferredList
 from twisted.web import http, resource, server
+import twisted.web.client
 
 from deluge import common, component, httpdownloader
 from deluge.configmanager import ConfigManager, get_config_dir
@@ -639,13 +640,29 @@ class WebApi(JSONComponent):
         :rtype: string
         """
 
+        def on_download_success(result):
+            log.debug("Successfully downloaded %s to %s", url, result)
+            return result
+
+        def on_download_fail(result):
+            if result.check(twisted.web.client.PartialDownloadError):
+                result = httpdownloader.download_file(url, tmp_file, headers=headers,
+                                                      allow_compression=False)
+                result.addCallbacks(on_download_success, on_download_fail)
+            else:
+                log.error("Error occured downloading torrent from %s", url)
+                log.error("Reason: %s", result.getErrorMessage())
+            return result
+
         tmp_file = os.path.join(tempfile.gettempdir(), url.split("/")[-1])
         log.debug("filename: %s", tmp_file)
         headers = {}
         if cookie:
             headers["Cookie"] = cookie
             log.debug("cookie: %s", cookie)
-        return httpdownloader.download_file(url, tmp_file, headers=headers)
+        d = httpdownloader.download_file(url, tmp_file, headers=headers)
+        d.addCallbacks(on_download_success, on_download_fail)
+        return d
 
     @export
     def get_torrent_info(self, filename):

tests/test_core.py

@@ -52,7 +52,7 @@ class CoreTestCase(unittest.TestCase):
         return d
 
     def test_add_torrent_url_with_cookie(self):
-        url = "http://deluge-torrent.org/test_torrent.php"
+        url = "http://deluge-torrent.org/test_torrent.php?test=cookie"
         options = {}
         headers = { "Cookie" : "password=deluge" }
         info_hash = "60d5d82328b4547511fdeac9bf4d0112daa0ce00"
@@ -65,6 +65,16 @@ class CoreTestCase(unittest.TestCase):
 
         return d
 
+    def test_add_torrent_url_with_partial_download(self):
+        url = "http://deluge-torrent.org/test_torrent.php?test=partial"
+        options = {}
+        info_hash = "60d5d82328b4547511fdeac9bf4d0112daa0ce00"
+
+        d = self.core.add_torrent_url(url, options)
+        d.addCallback(self.assertEquals, info_hash)
+
+        return d
+
     def test_add_magnet(self):
         info_hash = "60d5d82328b4547511fdeac9bf4d0112daa0ce00"
         import deluge.common