add date webdav search

iOSClient/Library/OCCommunicationLib/OCWebDavClient/OCWebDAVClient.m

@@ -298,7 +298,7 @@ NSString const *OCWebDAVModificationDateKey	= @"modificationdate";
     
     if (dateLastModified.length > 0) {
         
-         body = [NSString stringWithFormat:@"%@</d:prop></d:select><d:from><d:scope><d:href>/files/%@%@</d:href><d:depth>infinity</d:depth></d:scope></d:from><d:where><d:like><d:prop><d:displayname/></d:prop><d:literal>%@</d:literal></d:like></d:where><d:orderby/></d:basicsearch></d:searchrequest>", body, user, folder, fileName];
+         body = [NSString stringWithFormat:@"%@</d:prop></d:select><d:from><d:scope><d:href>/files/%@%@</d:href><d:depth>infinity</d:depth></d:scope></d:from><d:where><d:like><d:prop><d:displayname/></d:prop><d:literal>%@</d:literal><d:prop><d:getlastmodifed/></d:prop><d:literal>%@</d:literal></d:like></d:where><d:orderby/></d:basicsearch></d:searchrequest>", body, user, folder, fileName, dateLastModified];
         
     } else {
         

iOSClient/Networking/OCNetworking.m

@@ -410,8 +410,18 @@
     
     NSString *path = [_activeUrl stringByAppendingString:dav];
     NSString *folder = [_metadataNet.serverUrl stringByReplacingOccurrencesOfString:[CCUtility getHomeServerUrlActiveUrl:_activeUrl] withString:@""];
-
-    [communication search:path folder:folder fileName: [NSString stringWithFormat:@"%%%@%%", _metadataNet.fileName] depth:_metadataNet.options dateLastModified:@"" withUserSessionToken:nil onCommunication:communication successRequest:^(NSHTTPURLResponse *response, NSArray *items, NSString *redirectedServer, NSString *token) {
+    NSString *dateLastModified;
+    
+    if (_metadataNet.date) {
+        NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
+        NSLocale *enUSPOSIXLocale = [NSLocale localeWithLocaleIdentifier:@"en_US_POSIX"];
+        [dateFormatter setLocale:enUSPOSIXLocale];
+        [dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZZZZZ"];
+    
+        dateLastModified = [dateFormatter stringFromDate:_metadataNet.date];
+    }
+    
+    [communication search:path folder:folder fileName: [NSString stringWithFormat:@"%%%@%%", _metadataNet.fileName] depth:_metadataNet.options dateLastModified:dateLastModified withUserSessionToken:nil onCommunication:communication successRequest:^(NSHTTPURLResponse *response, NSArray *items, NSString *redirectedServer, NSString *token) {
         
         NSMutableArray *metadatas = [NSMutableArray new];