Add HTTP Upload (XEP-0363) support

1 files changed, 85 insertions, 0 deletions

diff --git a/nbxmpp/modules/http_upload.py b/nbxmpp/modules/http_upload.py
new file mode 100644
index 0000000..f912923
--- /dev/null
+++ b/nbxmpp/modules/http_upload.py
@@ -0,0 +1,85 @@
+# Copyright (C) 2019 Philipp Hörist <philipp AT hoerist.com>
+#
+# This file is part of nbxmpp.
+#
+# 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/>.
+
+import logging
+
+from nbxmpp.protocol import NS_HTTPUPLOAD_0
+from nbxmpp.protocol import Iq
+from nbxmpp.protocol import isResultNode
+from nbxmpp.structs import HTTPUploadData
+from nbxmpp.util import call_on_response
+from nbxmpp.util import callback
+from nbxmpp.util import raise_error
+
+
+ALLOWED_HEADERS = ['Authorization', 'Cookie', 'Expires']
+
+log = logging.getLogger('nbxmpp.m.http_upload')
+
+
+class HTTPUpload:
+    def __init__(self, client):
+        self._client = client
+        self.handlers = []
+
+    @call_on_response('_received_slot')
+    def request_slot(self, jid, filename, size, content_type):
+        iq = Iq(typ='get', to=jid)
+        attr = {'filename': filename,
+                'size': size,
+                'content-type': content_type}
+        iq.setTag(name="request",
+                  namespace=NS_HTTPUPLOAD_0,
+                  attrs=attr)
+        return iq
+
+    @callback
+    def _received_slot(self, stanza):
+        if not isResultNode(stanza):
+            return raise_error(log.info, stanza)
+
+        slot = stanza.getTag('slot', namespace=NS_HTTPUPLOAD_0)
+        if slot is None:
+            return raise_error(log.warning, stanza, 'stanza-malformed',
+                               'No slot node found')
+
+        put_uri = slot.getTagAttr('put', 'url')
+        if put_uri is None:
+            return raise_error(log.warning, stanza, 'stanza-malformed',
+                               'No put uri found')
+
+        get_uri = slot.getTagAttr('get', 'url')
+        if get_uri is None:
+            return raise_error(log.warning, stanza, 'stanza-malformed',
+                               'No get uri found')
+
+        headers = {}
+        for header in slot.getTag('put').getTags('header'):
+            name = header.getAttr('name')
+            if name not in ALLOWED_HEADERS:
+                return raise_error(log.warning, stanza, 'stanza-malformed',
+                                   'Not allowed header found: %s' % name)
+            data = header.getData()
+            if '\n' in data:
+                return raise_error(log.warning, stanza, 'stanza-malformed',
+                                   'NNewline in header data found')
+
+            headers[name] = data
+
+        return HTTPUploadData(put_uri=put_uri,
+                              get_uri=get_uri,
+                              headers=headers)