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CursorToMessage.java
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CursorToMessage.java
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/*
* Copyright (c) 2009 Christoph Studer <chstuder@gmail.com>
*
* 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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.zegoggles.smssync;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.LinkedHashMap;
import java.security.MessageDigest;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.provider.ContactsContract;
import android.provider.Contacts.ContactMethods;
import android.provider.Contacts.People;
import android.provider.Contacts.Phones;
import android.provider.ContactsContract.Contacts;
import android.provider.ContactsContract.PhoneLookup;
import android.util.Log;
import com.fsck.k9.mail.Address;
import com.fsck.k9.mail.Flag;
import com.fsck.k9.mail.Message;
import com.fsck.k9.mail.MessagingException;
import com.fsck.k9.mail.Message.RecipientType;
import com.fsck.k9.mail.internet.MimeMessage;
import com.fsck.k9.mail.internet.TextBody;
import org.apache.james.mime4j.codec.EncoderUtil;
import static com.zegoggles.smssync.App.*;
public class CursorToMessage {
//ContactsContract.CommonDataKinds.Email.CONTENT_URI
public static final Uri ECLAIR_CONTENT_URI = Uri.parse("content://com.android.contacts/data/emails");
// PhoneLookup.CONTENT_FILTER_URI
public static final Uri ECLAIR_CONTENT_FILTER_URI = Uri.parse("content://com.android.contacts/phone_lookup");
private static final String REFERENCE_UID_TEMPLATE = "<%s.%s@sms-backup-plus.local>";
private static final String MSG_ID_TEMPLATE = "<%s@sms-backup-plus.local>";
private static final boolean NEW_CONTACT_API = Integer.parseInt(Build.VERSION.SDK) >=
Build.VERSION_CODES.ECLAIR;
private static final String[] PHONE_PROJECTION = NEW_CONTACT_API ?
new String[] { Contacts._ID, Contacts.DISPLAY_NAME } :
new String[] { Phones.PERSON_ID, People.NAME, Phones.NUMBER };
private static final String UNKNOWN_NUMBER = "unknown_number";
private static final String UNKNOWN_EMAIL = "unknown.email";
private static final String UNKNOWN_PERSON = "unknown.person";
private static final int MAX_PEOPLE_CACHE_SIZE = 500;
private Context mContext;
private Address mUserAddress;
private Map<String, PersonRecord> mPeopleCache;
private String mReferenceValue;
private boolean mMarkAsRead = false;
private enum Style { NAME, NAME_AND_NUMBER, NUMBER };
private Style mStyle = Style.NAME;
public static interface Headers {
String ID = "X-smssync-id";
String ADDRESS = "X-smssync-address";
String TYPE = "X-smssync-type";
String DATE = "X-smssync-date";
String THREAD_ID = "X-smssync-thread";
String READ = "X-smssync-read";
String STATUS = "X-smssync-status";
String PROTOCOL = "X-smssync-protocol";
String SERVICE_CENTER = "X-smssync-service_center";
String BACKUP_TIME = "X-smssync-backup-time";
String VERSION = "X-smssync-version";
}
public CursorToMessage(Context ctx, String userEmail) {
mContext = ctx;
// simple LRU cache
mPeopleCache = new LinkedHashMap<String, PersonRecord>(MAX_PEOPLE_CACHE_SIZE+1, .75F, true) {
@Override
public boolean removeEldestEntry(Map.Entry eldest) {
return size() > MAX_PEOPLE_CACHE_SIZE;
}
};
mUserAddress = new Address(userEmail);
mReferenceValue = PrefStore.getReferenceUid(ctx);
if (mReferenceValue == null) {
mReferenceValue = generateReferenceValue(userEmail);
PrefStore.setReferenceUid(ctx, mReferenceValue);
}
mMarkAsRead = PrefStore.getMarkAsRead(ctx);
if (PrefStore.getEmailAddressStyle(ctx) != null) {
mStyle = Style.valueOf(PrefStore.getEmailAddressStyle(ctx).toUpperCase());
}
Log.d(Consts.TAG, String.format("using %s contacts API", NEW_CONTACT_API ? "new" : "old"));
}
public ConversionResult cursorToMessages(final Cursor cursor, final int maxEntries) throws MessagingException {
List<Message> messageList = new ArrayList<Message>(maxEntries);
long maxDate = PrefStore.DEFAULT_MAX_SYNCED_DATE;
final String[] columns = cursor.getColumnNames();
while (messageList.size() < maxEntries && cursor.moveToNext()) {
final long date = cursor.getLong(cursor.getColumnIndex(SmsConsts.DATE));
if (date > maxDate) {
maxDate = date;
}
Map<String, String> msgMap = new HashMap<String, String>(columns.length);
for (int i = 0; i < columns.length; i++) {
msgMap.put(columns[i], cursor.getString(i));
}
Message m = messageFromMap(msgMap);
if (m != null) messageList.add(m);
}
ConversionResult result = new ConversionResult();
result.maxDate = maxDate;
result.messageList = messageList;
return result;
}
private Message messageFromMap(Map<String, String> msgMap) throws MessagingException {
Message msg = new MimeMessage();
String address = msgMap.get(SmsConsts.ADDRESS);
if (address == null || address.trim().length() == 0) {
return null;
}
PersonRecord record = lookupPerson(address);
msg.setSubject("SMS with " + record.getName());
TextBody body = new TextBody(msgMap.get(SmsConsts.BODY));
int messageType = Integer.valueOf(msgMap.get(SmsConsts.TYPE));
if (SmsConsts.MESSAGE_TYPE_INBOX == messageType) {
// Received message
msg.setFrom(record.getAddress());
msg.setRecipient(RecipientType.TO, mUserAddress);
} else {
// Sent message
msg.setRecipient(RecipientType.TO, record.getAddress());
msg.setFrom(mUserAddress);
}
msg.setBody(body);
try {
Date then = new Date(Long.valueOf(msgMap.get(SmsConsts.DATE)));
msg.setSentDate(then);
msg.setInternalDate(then);
msg.setHeader("Message-ID", createMessageId(then, address, messageType));
} catch (NumberFormatException n) {
Log.e(Consts.TAG, "error parsing date", n);
}
// Threading by person ID, not by thread ID. I think this value is more stable.
msg.setHeader("References",
String.format(REFERENCE_UID_TEMPLATE, mReferenceValue, sanitize(record._id)));
msg.setHeader(Headers.ID, msgMap.get(SmsConsts.ID));
msg.setHeader(Headers.ADDRESS, sanitize(address));
msg.setHeader(Headers.TYPE, msgMap.get(SmsConsts.TYPE));
msg.setHeader(Headers.DATE, msgMap.get(SmsConsts.DATE));
msg.setHeader(Headers.THREAD_ID, msgMap.get(SmsConsts.THREAD_ID));
msg.setHeader(Headers.READ, msgMap.get(SmsConsts.READ));
msg.setHeader(Headers.STATUS, msgMap.get(SmsConsts.STATUS));
msg.setHeader(Headers.PROTOCOL, msgMap.get(SmsConsts.PROTOCOL));
msg.setHeader(Headers.SERVICE_CENTER, msgMap.get(SmsConsts.SERVICE_CENTER));
msg.setHeader(Headers.BACKUP_TIME, new Date().toGMTString());
msg.setHeader(Headers.VERSION, PrefStore.getVersion(mContext, true));
msg.setFlag(Flag.SEEN, mMarkAsRead);
return msg;
}
/**
* Create a message-id based on message date, phone number and message
* type.
*/
private String createMessageId(Date sent, String address, int type) {
try {
MessageDigest digest = java.security.MessageDigest.getInstance("MD5");
digest.update(Long.toString(sent.getTime()).getBytes("UTF-8"));
digest.update(address.getBytes("UTF-8"));
digest.update(Integer.toString(type).getBytes("UTF-8"));
StringBuilder sb = new StringBuilder();
for (byte b : digest.digest()) {
sb.append(String.format("%02x", b));
}
return String.format(MSG_ID_TEMPLATE, sb.toString());
} catch (java.io.UnsupportedEncodingException e) {
throw new RuntimeException(e);
} catch (java.security.NoSuchAlgorithmException e) {
throw new RuntimeException(e);
}
}
/* Look up a person */
private PersonRecord lookupPerson(final String address) {
if (!mPeopleCache.containsKey(address)) {
Uri personUri = Uri.withAppendedPath(NEW_CONTACT_API ? ECLAIR_CONTENT_FILTER_URI :
PhoneLookup.CONTENT_FILTER_URI, Uri.encode(address));
Cursor c = mContext.getContentResolver().query(personUri, PHONE_PROJECTION, null, null, null);
final PersonRecord record = new PersonRecord();
if (c != null && c.moveToFirst()) {
long id = c.getLong(c.getColumnIndex(PHONE_PROJECTION[0]));
record._id = String.valueOf(id);
record.name = sanitize(c.getString(c.getColumnIndex(PHONE_PROJECTION[1])));
record.email = getPrimaryEmail(id, record.number);
record.number = NEW_CONTACT_API ? address :
c.getString(c.getColumnIndex(PHONE_PROJECTION[2]));
} else {
if (LOCAL_LOGV) Log.v(Consts.TAG, "Looked up unknown address: " + address);
record._id = address;
record.number = address;
record.email = encodeLocal(address) + "@" + UNKNOWN_PERSON;
}
mPeopleCache.put(address, record);
if (c != null) c.close();
}
return mPeopleCache.get(address);
}
private String getPrimaryEmail(final long personId, final String number) {
if (personId <= 0) {
return getUnknownEmail(number);
}
String primaryEmail = null;
// Get all e-mail addresses for that person.
Cursor c;
int columnIndex;
if (NEW_CONTACT_API) {
c = mContext.getContentResolver().query(
ECLAIR_CONTENT_URI,
new String[] { ContactsContract.CommonDataKinds.Email.DATA },
ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?", new String[] { String.valueOf(personId) },
ContactsContract.CommonDataKinds.Email.IS_PRIMARY + " DESC");
columnIndex = c.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA);
} else {
c = mContext.getContentResolver().query(
ContactMethods.CONTENT_EMAIL_URI,
new String[] { ContactMethods.DATA },
ContactMethods.PERSON_ID + " = ?", new String[] { String.valueOf(personId) },
ContactMethods.ISPRIMARY + " DESC");
columnIndex = c.getColumnIndex(ContactMethods.DATA);
}
// Loop over cursor and find a Gmail address for that person.
// If there is none, pick first e-mail address.
while (c.moveToNext()) {
String e = c.getString(columnIndex);
if (primaryEmail == null) {
primaryEmail = e;
}
if (isGmailAddress(e)) {
primaryEmail = e;
break;
}
}
c.close();
// Return found e-mail address or a dummy "unknown e-mail address"
// if there is none.
if (primaryEmail == null) {
return getUnknownEmail(number);
} else {
return primaryEmail;
}
}
private static String sanitize(String s) {
return s != null ? s.replaceAll("\\p{Cntrl}", "") : null;
}
private static String encodeLocal(String s) {
return (s != null ? EncoderUtil.encodeAddressLocalPart(sanitize(s)) : null);
}
private static String encodeDisplayName(String s) {
return (s != null ? EncoderUtil.encodeAddressDisplayName(sanitize(s)) : null);
}
private static String getUnknownEmail(String number) {
String no = (number == null) ? UNKNOWN_NUMBER : number;
return encodeLocal(no.trim()) + "@" + UNKNOWN_EMAIL;
}
/** Returns whether the given e-mail address is a Gmail address or not. */
private static boolean isGmailAddress(String email) {
return email.endsWith("gmail.com") || email.endsWith("googlemail.com");
}
private static String generateReferenceValue(String email) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < 24; i++) {
sb.append(Integer.toString((int)(Math.random() * 35), 36));
}
return sb.toString();
}
public class ConversionResult {
public long maxDate;
public List<Message> messageList;
}
private class PersonRecord {
public String _id, name, email, number;
private Address mAddress;
public Address getAddress() {
if (mAddress == null) {
switch(mStyle) {
case NUMBER:
mAddress = new Address(email, number);
break;
case NAME_AND_NUMBER:
mAddress = new Address(email,
name == null ? number : String.format("%s (%s)", name, number));
break;
case NAME:
mAddress = new Address(email, name);
break;
}
}
return mAddress;
}
public String getName() {
return sanitize(name != null ? name : number);
}
}
}