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<title>[12874] CalendarServer/trunk/calendarserver/webadmin/principals.py</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.calendarserver.org//changeset/12874">12874</a></dd>
<dt>Author</dt> <dd>wsanchez@apple.com</dd>
<dt>Date</dt> <dd>2014-03-10 18:14:56 -0700 (Mon, 10 Mar 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Add some code for downloading calendar data.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#CalendarServertrunkcalendarserverwebadminprincipalspy">CalendarServer/trunk/calendarserver/webadmin/principals.py</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="CalendarServertrunkcalendarserverwebadminprincipalspy"></a>
<div class="modfile"><h4>Modified: CalendarServer/trunk/calendarserver/webadmin/principals.py (12873 => 12874)</h4>
<pre class="diff"><span>
<span class="info">--- CalendarServer/trunk/calendarserver/webadmin/principals.py        2014-03-10 23:37:41 UTC (rev 12873)
+++ CalendarServer/trunk/calendarserver/webadmin/principals.py        2014-03-11 01:14:56 UTC (rev 12874)
</span><span class="lines">@@ -25,9 +25,17 @@
</span><span class="cx">     &quot;PrincipalsResource&quot;,
</span><span class="cx"> ]
</span><span class="cx"> 
</span><ins>+from cStringIO import StringIO
+from zipfile import ZipFile
+
</ins><span class="cx"> from twisted.internet.defer import inlineCallbacks, returnValue
</span><span class="cx"> from twisted.web.template import tags as html, renderer
</span><span class="cx"> 
</span><ins>+from txweb2.stream import MemoryStream
+from txweb2.resource import Resource
+from txweb2.http import Response
+from txweb2.http_headers import MimeType
+
</ins><span class="cx"> from .resource import PageElement, TemplateResource
</span><span class="cx"> 
</span><span class="cx"> 
</span><span class="lines">@@ -104,12 +112,13 @@
</span><span class="cx">     addSlash = True
</span><span class="cx"> 
</span><span class="cx"> 
</span><del>-    def __init__(self, directory):
</del><ins>+    def __init__(self, directory, store):
</ins><span class="cx">         TemplateResource.__init__(
</span><span class="cx">             self, lambda: PrincipalsPageElement(directory)
</span><span class="cx">         )
</span><span class="cx"> 
</span><span class="cx">         self._directory = directory
</span><ins>+        self._store = store
</ins><span class="cx"> 
</span><span class="cx"> 
</span><span class="cx">     def getChild(self, name):
</span><span class="lines">@@ -119,13 +128,13 @@
</span><span class="cx">         record = self._directory.recordWithUID(name)
</span><span class="cx"> 
</span><span class="cx">         if record:
</span><del>-            return PrincipalEditResource(record)
</del><ins>+            return PrincipalResource(record, self._store)
</ins><span class="cx">         else:
</span><span class="cx">             return None
</span><span class="cx"> 
</span><span class="cx"> 
</span><span class="cx"> 
</span><del>-class PrincipalEditPageElement(PageElement):
</del><ins>+class PrincipalPageElement(PageElement):
</ins><span class="cx">     &quot;&quot;&quot;
</span><span class="cx">     Principal editing page element.
</span><span class="cx">     &quot;&quot;&quot;
</span><span class="lines">@@ -150,21 +159,127 @@
</span><span class="cx"> 
</span><span class="cx"> 
</span><span class="cx"> 
</span><del>-class PrincipalEditResource(TemplateResource):
</del><ins>+class PrincipalResource(TemplateResource):
</ins><span class="cx">     &quot;&quot;&quot;
</span><span class="cx">     Principal editing resource.
</span><span class="cx">     &quot;&quot;&quot;
</span><span class="cx"> 
</span><del>-    addSlash = False
</del><ins>+    addSlash = True
</ins><span class="cx"> 
</span><span class="cx"> 
</span><del>-    def __init__(self, record):
</del><ins>+    def __init__(self, record, store):
</ins><span class="cx">         TemplateResource.__init__(
</span><del>-            self, lambda: PrincipalEditPageElement(record)
</del><ins>+            self, lambda: PrincipalPageElement(record)
</ins><span class="cx">         )
</span><span class="cx"> 
</span><ins>+        self._record = record
+        self._store = store
</ins><span class="cx"> 
</span><span class="cx"> 
</span><ins>+    def getChild(self, name):
+        if name == &quot;&quot;:
+            return self
+
+        if name == &quot;calendars_combined&quot;:
+            return PrincipalCalendarsExportResource(self._record, self._store)
+
+
+
+class PrincipalCalendarsExportResource(Resource):
+    &quot;&quot;&quot;
+    Resource that vends a principal's calendars as iCalendar text.
+    &quot;&quot;&quot;
+
+    addSlash = False
+
+
+    def __init__(self, record, store):
+        Resource.__init__(self)
+
+        self._record = record
+        self._store = store
+
+
+    @inlineCallbacks
+    def calendarComponents(self):
+        uid = self._record.uid
+
+        calendarComponents = []
+
+        txn = self._store.newTransaction()
+        try:
+            calendarHome = yield txn.calendarHomeWithUID(uid)
+
+            if calendarHome is None:
+                raise RuntimeError(&quot;No calendar home for UID: {}&quot;.format(uid))
+
+            for calendar in (yield calendarHome.calendars()):
+                name = calendar.displayName()
+
+                for calendarObject in (yield calendar.calendarObjects()):
+                    perUser = yield calendarObject.filteredComponent(uid, True)
+                    calendarComponents.add((name, perUser))
+
+        finally:
+            txn.abort()
+
+        returnValue(calendarComponents)
+
+
+    @inlineCallbacks
+    def iCalendarZipArchiveData(self):
+        calendarComponents = yield self.calendarComponents()
+
+        fileHandle = StringIO()
+        try:
+            zipFile = ZipFile(fileHandle, &quot;w&quot;, allowZip64=True)
+            try:
+                zipFile.comment = (
+                    &quot;Calendars for UID: {}&quot;.format(self._record.uid)
+                )
+
+                names = set()
+
+                for name, component in calendarComponents:
+                    if name in names:
+                        i = 0
+                        while True:
+                            i += 1
+                            nextName = &quot;{} {:d}&quot;.format(name, i)
+                            if nextName not in names:
+                                name = nextName
+                                break
+                            assert i &lt; len(calendarComponents)
+
+                    text = component.getText().encode(&quot;utf-8&quot;)
+
+                    zipFile.writestr(name.encode(&quot;utf-8&quot;), text)
+
+            finally:
+                zipFile.close()
+
+            data = fileHandle.getvalue()
+        finally:
+            fileHandle.close()
+
+        returnValue(data)
+
+
+    @inlineCallbacks
+    def render(self, request):
+        response = Response()
+        response.stream = MemoryStream((yield self.iCalendarZipArchiveData()))
+
+        # FIXME: Use content-encoding instead?
+        response.headers.setHeader(
+            b&quot;content-type&quot;,
+            MimeType.fromString(b&quot;application/zip&quot;)
+        )
+
+        returnValue(response)
+
+
+
</ins><span class="cx"> def searchTerms(request):
</span><span class="cx">     if not hasattr(request, &quot;_search_terms&quot;):
</span><span class="cx">         terms = set()
</span></span></pre>
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