src/com/android/calendar/GoogleCalendarUriIntentFilter.java - platform/packages/apps/Calendar - Git at Google

 /*
 **
 ** Copyright 2009, The Android Open Source Project
 **
 ** Licensed under the Apache License, Version 2.0 (the "License");
 ** you may not use this file except in compliance with the License.
 ** You may obtain a copy of the License at
 **
 **     http://www.apache.org/licenses/LICENSE-2.0
 **
 ** Unless required by applicable law or agreed to in writing, software
 ** distributed under the License is distributed on an "AS IS" BASIS,
 ** See the License for the specific language governing permissions and
 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ** limitations under the License.
 */

 package com.android.calendar;

 import static android.provider.CalendarContract.Attendees.ATTENDEE_STATUS;
 import static android.provider.CalendarContract.Attendees.ATTENDEE_STATUS_ACCEPTED;
 import static android.provider.CalendarContract.Attendees.ATTENDEE_STATUS_DECLINED;
 import static android.provider.CalendarContract.Attendees.ATTENDEE_STATUS_NONE;
 import static android.provider.CalendarContract.Attendees.ATTENDEE_STATUS_TENTATIVE;
 import static android.provider.CalendarContract.EXTRA_EVENT_BEGIN_TIME;
 import static android.provider.CalendarContract.EXTRA_EVENT_END_TIME;

 import android.app.Activity;
 import android.content.ActivityNotFoundException;
 import android.content.ContentUris;
 import android.content.Intent;
 import android.database.Cursor;
 import android.net.Uri;
 import android.os.Bundle;
 import android.provider.CalendarContract.Calendars;
 import android.provider.CalendarContract.Events;
 import android.text.TextUtils;
 import android.util.Base64;
 import android.util.Log;

 import com.android.calendarcommon2.DateException;
 import com.android.calendarcommon2.Duration;

 public class GoogleCalendarUriIntentFilter extends Activity {
     private static final String TAG = "GoogleCalendarUriIntentFilter";
     static final boolean debug = false;

     private static final int EVENT_INDEX_ID = 0;
     private static final int EVENT_INDEX_START = 1;
     private static final int EVENT_INDEX_END = 2;
     private static final int EVENT_INDEX_DURATION = 3;

     private static final String[] EVENT_PROJECTION = new String[] {
         Events._ID,      // 0
         Events.DTSTART,  // 1
         Events.DTEND,    // 2
         Events.DURATION, // 3
     };

     /**
      * Extracts the ID and calendar email from the eid parameter of a URI.
      *
      * The URI contains an "eid" parameter, which is comprised of an ID, followed
      * by a space, followed by the calendar email address. The domain is sometimes
      * shortened. See the switch statement. This is Base64-encoded before being
      * added to the URI.
      *
      * @param uri incoming request
      * @return the decoded event ID and calendar email
      */
     private String[] extractEidAndEmail(Uri uri) {
         try {
             String eidParam = uri.getQueryParameter("eid");
             if (debug) Log.d(TAG, "eid=" + eidParam );
             if (eidParam == null) {
                 return null;
             }

             byte[] decodedBytes = Base64.decode(eidParam, Base64.DEFAULT);
             if (debug) Log.d(TAG, "decoded eid=" + new String(decodedBytes) );

             for (int spacePosn = 0; spacePosn < decodedBytes.length; spacePosn++) {
                 if (decodedBytes[spacePosn] == ' ') {
                     int emailLen = decodedBytes.length - spacePosn - 1;
                     if (spacePosn == 0 || emailLen < 3) {
                         break;
                     }

                     String domain = null;
                     if (decodedBytes[decodedBytes.length - 2] == '@') {
                         // Drop the special one character domain
                         emailLen--;

                         switch(decodedBytes[decodedBytes.length - 1]) {
                             case 'm':
                                 domain = "gmail.com";
                                 break;
                             case 'g':
                                 domain = "group.calendar.google.com";
                                 break;
                             case 'h':
                                 domain = "holiday.calendar.google.com";
                                 break;
                             case 'i':
                                 domain = "import.calendar.google.com";
                                 break;
                             case 'v':
                                 domain = "group.v.calendar.google.com";
                                 break;
                             default:
                                 Log.wtf(TAG, "Unexpected one letter domain: "
                                         + decodedBytes[decodedBytes.length - 1]);
                                 // Add sql wild card char to handle new cases
                                 // that we don't know about.
                                 domain = "%";
                                 break;
                         }
                     }

                     String eid = new String(decodedBytes, 0, spacePosn);
                     String email = new String(decodedBytes, spacePosn + 1, emailLen);
                     if (debug) Log.d(TAG, "eid=   " + eid );
                     if (debug) Log.d(TAG, "email= " + email );
                     if (debug) Log.d(TAG, "domain=" + domain );
                     if (domain != null) {
                         email += domain;
                     }

                     return new String[] { eid, email };
                 }
             }
         } catch (RuntimeException e) {
             Log.w(TAG, "Punting malformed URI " + uri);
         }
         return null;
     }

     @Override
     protected void onCreate(Bundle icicle) {
         super.onCreate(icicle);

         Intent intent = getIntent();
         if (intent != null) {
             Uri uri = intent.getData();
             if (uri != null) {
                 String[] eidParts = extractEidAndEmail(uri);
                 if (debug) Log.d(TAG, "eidParts=" + eidParts );

                 if (eidParts != null) {
                     final String selection = Events._SYNC_ID + " LIKE \"%" + eidParts[0]
                             + "\" AND " + Calendars.OWNER_ACCOUNT + " LIKE \"" + eidParts[1] + "\"";

                     if (debug) Log.d(TAG, "selection: " + selection);
                     Cursor eventCursor = getContentResolver().query(Events.CONTENT_URI,
                             EVENT_PROJECTION, selection, null,
                             Calendars.CALENDAR_ACCESS_LEVEL + " desc");
                     if (debug) Log.d(TAG, "Found: " + eventCursor.getCount());

                     if (eventCursor != null && eventCursor.getCount() > 0) {
                         if (eventCursor.getCount() > 1) {
                             Log.i(TAG, "NOTE: found " + eventCursor.getCount()
                                     + " matches on event with id='" + eidParts[0] + "'");
                             // Don't print eidPart[1] as it contains the user's PII
                         }

                         // Get info from Cursor
                         while (eventCursor.moveToNext()) {
                             int eventId = eventCursor.getInt(EVENT_INDEX_ID);
                             long startMillis = eventCursor.getLong(EVENT_INDEX_START);
                             long endMillis = eventCursor.getLong(EVENT_INDEX_END);
                             if (debug) Log.d(TAG, "_id: " + eventCursor.getLong(EVENT_INDEX_ID));
                             if (debug) Log.d(TAG, "startMillis: " + startMillis);
                             if (debug) Log.d(TAG, "endMillis:   " + endMillis);

                             if (endMillis == 0) {
                                 String duration = eventCursor.getString(EVENT_INDEX_DURATION);
                                 if (debug) Log.d(TAG, "duration:    " + duration);
                                 if (TextUtils.isEmpty(duration)) {
                                     continue;
                                 }

                                 try {
                                     Duration d = new Duration();
                                     d.parse(duration);
                                     endMillis = startMillis + d.getMillis();
                                     if (debug) Log.d(TAG, "startMillis! " + startMillis);
                                     if (debug) Log.d(TAG, "endMillis!   " + endMillis);
                                     if (endMillis < startMillis) {
                                         continue;
                                     }
                                 } catch (DateException e) {
                                     if (debug) Log.d(TAG, "duration:" + e.toString());
                                     continue;
                                 }
                             }

                             eventCursor.close();
                             eventCursor = null;

                             // Pick up attendee status action from uri clicked
                             int attendeeStatus = ATTENDEE_STATUS_NONE;
                             if ("RESPOND".equals(uri.getQueryParameter("action"))) {
                                 try {
                                     switch (Integer.parseInt(uri.getQueryParameter("rst"))) {
                                     case 1: // Yes
                                         attendeeStatus = ATTENDEE_STATUS_ACCEPTED;
                                         break;
                                     case 2: // No
                                         attendeeStatus = ATTENDEE_STATUS_DECLINED;
                                         break;
                                     case 3: // Maybe
                                         attendeeStatus = ATTENDEE_STATUS_TENTATIVE;
                                         break;
                                     }
                                 } catch (NumberFormatException e) {
                                     // ignore this error as if the response code
                                     // wasn't in the uri.
                                 }
                             }

                             // Send intent to calendar app
                             Uri calendarUri = ContentUris.withAppendedId(Events.CONTENT_URI,
                                     eventId);
                             intent = new Intent(Intent.ACTION_VIEW, calendarUri);
                             intent.setClass(this, EventInfoActivity.class);
                             intent.putExtra(EXTRA_EVENT_BEGIN_TIME, startMillis);
                             intent.putExtra(EXTRA_EVENT_END_TIME, endMillis);
                             if (attendeeStatus != ATTENDEE_STATUS_NONE) {
                                 intent.putExtra(ATTENDEE_STATUS, attendeeStatus);
                             }
                             startActivity(intent);
                             finish();
                             return;
                         }
                     }
                     if (eventCursor != null) eventCursor.close();
                 }
             }

             // Can't handle the intent. Pass it on to the next Activity.
             try {
                 startNextMatchingActivity(intent);
             } catch (ActivityNotFoundException ex) {
                 // no browser installed? Just drop it.
             }
         }
         finish();
     }
 }
	/*
	**
	** Copyright 2009, The Android Open Source Project
	**
	** Licensed under the Apache License, Version 2.0 (the "License");
	** you may not use this file except in compliance with the License.
	** You may obtain a copy of the License at
	**
	** http://www.apache.org/licenses/LICENSE-2.0
	**
	** Unless required by applicable law or agreed to in writing, software
	** distributed under the License is distributed on an "AS IS" BASIS,
	** See the License for the specific language governing permissions and
	** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	** limitations under the License.
	*/

	package com.android.calendar;

	import static android.provider.CalendarContract.Attendees.ATTENDEE_STATUS;
	import static android.provider.CalendarContract.Attendees.ATTENDEE_STATUS_ACCEPTED;
	import static android.provider.CalendarContract.Attendees.ATTENDEE_STATUS_DECLINED;
	import static android.provider.CalendarContract.Attendees.ATTENDEE_STATUS_NONE;
	import static android.provider.CalendarContract.Attendees.ATTENDEE_STATUS_TENTATIVE;
	import static android.provider.CalendarContract.EXTRA_EVENT_BEGIN_TIME;
	import static android.provider.CalendarContract.EXTRA_EVENT_END_TIME;

	import android.app.Activity;
	import android.content.ActivityNotFoundException;
	import android.content.ContentUris;
	import android.content.Intent;
	import android.database.Cursor;
	import android.net.Uri;
	import android.os.Bundle;
	import android.provider.CalendarContract.Calendars;
	import android.provider.CalendarContract.Events;
	import android.text.TextUtils;
	import android.util.Base64;
	import android.util.Log;

	import com.android.calendarcommon2.DateException;
	import com.android.calendarcommon2.Duration;

	public class GoogleCalendarUriIntentFilter extends Activity {
	private static final String TAG = "GoogleCalendarUriIntentFilter";
	static final boolean debug = false;

	private static final int EVENT_INDEX_ID = 0;
	private static final int EVENT_INDEX_START = 1;
	private static final int EVENT_INDEX_END = 2;
	private static final int EVENT_INDEX_DURATION = 3;

	private static final String[] EVENT_PROJECTION = new String[] {
	Events._ID, // 0
	Events.DTSTART, // 1
	Events.DTEND, // 2
	Events.DURATION, // 3
	};

	/**
	* Extracts the ID and calendar email from the eid parameter of a URI.
	*
	* The URI contains an "eid" parameter, which is comprised of an ID, followed
	* by a space, followed by the calendar email address. The domain is sometimes
	* shortened. See the switch statement. This is Base64-encoded before being
	* added to the URI.
	*
	* @param uri incoming request
	* @return the decoded event ID and calendar email
	*/
	private String[] extractEidAndEmail(Uri uri) {
	try {
	String eidParam = uri.getQueryParameter("eid");
	if (debug) Log.d(TAG, "eid=" + eidParam );
	if (eidParam == null) {
	return null;
	}

	byte[] decodedBytes = Base64.decode(eidParam, Base64.DEFAULT);
	if (debug) Log.d(TAG, "decoded eid=" + new String(decodedBytes) );

	for (int spacePosn = 0; spacePosn < decodedBytes.length; spacePosn++) {
	if (decodedBytes[spacePosn] == ' ') {
	int emailLen = decodedBytes.length - spacePosn - 1;
	if (spacePosn == 0 \|\| emailLen < 3) {
	break;
	}

	String domain = null;
	if (decodedBytes[decodedBytes.length - 2] == '@') {
	// Drop the special one character domain
	emailLen--;

	switch(decodedBytes[decodedBytes.length - 1]) {
	case 'm':
	domain = "gmail.com";
	break;
	case 'g':
	domain = "group.calendar.google.com";
	break;
	case 'h':
	domain = "holiday.calendar.google.com";
	break;
	case 'i':
	domain = "import.calendar.google.com";
	break;
	case 'v':
	domain = "group.v.calendar.google.com";
	break;
	default:
	Log.wtf(TAG, "Unexpected one letter domain: "
	+ decodedBytes[decodedBytes.length - 1]);
	// Add sql wild card char to handle new cases
	// that we don't know about.
	domain = "%";
	break;
	}
	}

	String eid = new String(decodedBytes, 0, spacePosn);
	String email = new String(decodedBytes, spacePosn + 1, emailLen);
	if (debug) Log.d(TAG, "eid= " + eid );
	if (debug) Log.d(TAG, "email= " + email );
	if (debug) Log.d(TAG, "domain=" + domain );
	if (domain != null) {
	email += domain;
	}

	return new String[] { eid, email };
	}
	}
	} catch (RuntimeException e) {
	Log.w(TAG, "Punting malformed URI " + uri);
	}
	return null;
	}

	@Override
	protected void onCreate(Bundle icicle) {
	super.onCreate(icicle);

	Intent intent = getIntent();
	if (intent != null) {
	Uri uri = intent.getData();
	if (uri != null) {
	String[] eidParts = extractEidAndEmail(uri);
	if (debug) Log.d(TAG, "eidParts=" + eidParts );

	if (eidParts != null) {
	final String selection = Events._SYNC_ID + " LIKE \"%" + eidParts[0]
	+ "\" AND " + Calendars.OWNER_ACCOUNT + " LIKE \"" + eidParts[1] + "\"";

	if (debug) Log.d(TAG, "selection: " + selection);
	Cursor eventCursor = getContentResolver().query(Events.CONTENT_URI,
	EVENT_PROJECTION, selection, null,
	Calendars.CALENDAR_ACCESS_LEVEL + " desc");
	if (debug) Log.d(TAG, "Found: " + eventCursor.getCount());

	if (eventCursor != null && eventCursor.getCount() > 0) {
	if (eventCursor.getCount() > 1) {
	Log.i(TAG, "NOTE: found " + eventCursor.getCount()
	+ " matches on event with id='" + eidParts[0] + "'");
	// Don't print eidPart[1] as it contains the user's PII
	}

	// Get info from Cursor
	while (eventCursor.moveToNext()) {
	int eventId = eventCursor.getInt(EVENT_INDEX_ID);
	long startMillis = eventCursor.getLong(EVENT_INDEX_START);
	long endMillis = eventCursor.getLong(EVENT_INDEX_END);
	if (debug) Log.d(TAG, "_id: " + eventCursor.getLong(EVENT_INDEX_ID));
	if (debug) Log.d(TAG, "startMillis: " + startMillis);
	if (debug) Log.d(TAG, "endMillis: " + endMillis);

	if (endMillis == 0) {
	String duration = eventCursor.getString(EVENT_INDEX_DURATION);
	if (debug) Log.d(TAG, "duration: " + duration);
	if (TextUtils.isEmpty(duration)) {
	continue;
	}

	try {
	Duration d = new Duration();
	d.parse(duration);
	endMillis = startMillis + d.getMillis();
	if (debug) Log.d(TAG, "startMillis! " + startMillis);
	if (debug) Log.d(TAG, "endMillis! " + endMillis);
	if (endMillis < startMillis) {
	continue;
	}
	} catch (DateException e) {
	if (debug) Log.d(TAG, "duration:" + e.toString());
	continue;
	}
	}

	eventCursor.close();
	eventCursor = null;

	// Pick up attendee status action from uri clicked
	int attendeeStatus = ATTENDEE_STATUS_NONE;
	if ("RESPOND".equals(uri.getQueryParameter("action"))) {
	try {
	switch (Integer.parseInt(uri.getQueryParameter("rst"))) {
	case 1: // Yes
	attendeeStatus = ATTENDEE_STATUS_ACCEPTED;
	break;
	case 2: // No
	attendeeStatus = ATTENDEE_STATUS_DECLINED;
	break;
	case 3: // Maybe
	attendeeStatus = ATTENDEE_STATUS_TENTATIVE;
	break;
	}
	} catch (NumberFormatException e) {
	// ignore this error as if the response code
	// wasn't in the uri.
	}
	}

	// Send intent to calendar app
	Uri calendarUri = ContentUris.withAppendedId(Events.CONTENT_URI,
	eventId);
	intent = new Intent(Intent.ACTION_VIEW, calendarUri);
	intent.setClass(this, EventInfoActivity.class);
	intent.putExtra(EXTRA_EVENT_BEGIN_TIME, startMillis);
	intent.putExtra(EXTRA_EVENT_END_TIME, endMillis);
	if (attendeeStatus != ATTENDEE_STATUS_NONE) {
	intent.putExtra(ATTENDEE_STATUS, attendeeStatus);
	}
	startActivity(intent);
	finish();
	return;
	}
	}
	if (eventCursor != null) eventCursor.close();
	}
	}

	// Can't handle the intent. Pass it on to the next Activity.
	try {
	startNextMatchingActivity(intent);
	} catch (ActivityNotFoundException ex) {
	// no browser installed? Just drop it.
	}
	}
	finish();
	}
	}