/*
* Copyright (C) 2008-2009 Marc Blank
* Licensed to 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,
* 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.android.exchange;
import com.android.email.SecurityPolicy;
import com.android.email.Utility;
import com.android.email.SecurityPolicy.PolicySet;
import com.android.email.mail.Address;
import com.android.email.mail.AuthenticationFailedException;
import com.android.email.mail.MeetingInfo;
import com.android.email.mail.MessagingException;
import com.android.email.mail.PackedString;
import com.android.email.provider.EmailContent.Account;
import com.android.email.provider.EmailContent.AccountColumns;
import com.android.email.provider.EmailContent.Attachment;
import com.android.email.provider.EmailContent.AttachmentColumns;
import com.android.email.provider.EmailContent.HostAuth;
import com.android.email.provider.EmailContent.Mailbox;
import com.android.email.provider.EmailContent.MailboxColumns;
import com.android.email.provider.EmailContent.Message;
import com.android.email.service.EmailServiceConstants;
import com.android.email.service.EmailServiceProxy;
import com.android.email.service.EmailServiceStatus;
import com.android.exchange.adapter.AbstractSyncAdapter;
import com.android.exchange.adapter.AccountSyncAdapter;
import com.android.exchange.adapter.CalendarSyncAdapter;
import com.android.exchange.adapter.ContactsSyncAdapter;
import com.android.exchange.adapter.EmailSyncAdapter;
import com.android.exchange.adapter.FolderSyncParser;
import com.android.exchange.adapter.GalParser;
import com.android.exchange.adapter.MeetingResponseParser;
import com.android.exchange.adapter.PingParser;
import com.android.exchange.adapter.ProvisionParser;
import com.android.exchange.adapter.Serializer;
import com.android.exchange.adapter.Tags;
import com.android.exchange.adapter.Parser.EasParserException;
import com.android.exchange.provider.GalResult;
import com.android.exchange.utility.CalendarUtilities;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpOptions;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
import org.xmlpull.v1.XmlSerializer;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.Entity;
import android.database.Cursor;
import android.os.Bundle;
import android.os.RemoteException;
import android.os.SystemClock;
import android.provider.Calendar.Attendees;
import android.provider.Calendar.Events;
import android.text.TextUtils;
import android.util.Base64;
import android.util.Log;
import android.util.Xml;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.Thread.State;
import java.net.URI;
import java.net.URLEncoder;
import java.security.cert.CertificateException;
import java.util.ArrayList;
import java.util.HashMap;
public class EasSyncService extends AbstractSyncService {
// DO NOT CHECK IN SET TO TRUE
public static final boolean DEBUG_GAL_SERVICE = false;
private static final String EMAIL_WINDOW_SIZE = "5";
public static final String PIM_WINDOW_SIZE = "4";
private static final String WHERE_ACCOUNT_KEY_AND_SERVER_ID =
MailboxColumns.ACCOUNT_KEY + "=? and " + MailboxColumns.SERVER_ID + "=?";
private static final String WHERE_ACCOUNT_AND_SYNC_INTERVAL_PING =
MailboxColumns.ACCOUNT_KEY + "=? and " + MailboxColumns.SYNC_INTERVAL +
'=' + Mailbox.CHECK_INTERVAL_PING;
private static final String AND_FREQUENCY_PING_PUSH_AND_NOT_ACCOUNT_MAILBOX = " AND " +
MailboxColumns.SYNC_INTERVAL + " IN (" + Mailbox.CHECK_INTERVAL_PING +
',' + Mailbox.CHECK_INTERVAL_PUSH + ") AND " + MailboxColumns.TYPE + "!=\"" +
Mailbox.TYPE_EAS_ACCOUNT_MAILBOX + '\"';
private static final String WHERE_PUSH_HOLD_NOT_ACCOUNT_MAILBOX =
MailboxColumns.ACCOUNT_KEY + "=? and " + MailboxColumns.SYNC_INTERVAL +
'=' + Mailbox.CHECK_INTERVAL_PUSH_HOLD;
static private final int CHUNK_SIZE = 16*1024;
static private final String PING_COMMAND = "Ping";
// Command timeout is the the time allowed for reading data from an open connection before an
// IOException is thrown. After a small added allowance, our watchdog alarm goes off (allowing
// us to detect a silently dropped connection). The allowance is defined below.
static private final int COMMAND_TIMEOUT = 20*SECONDS;
// Connection timeout is the time given to connect to the server before reporting an IOException
static private final int CONNECTION_TIMEOUT = 20*SECONDS;
// The extra time allowed beyond the COMMAND_TIMEOUT before which our watchdog alarm triggers
static private final int WATCHDOG_TIMEOUT_ALLOWANCE = 30*SECONDS;
static private final String AUTO_DISCOVER_SCHEMA_PREFIX =
"http://schemas.microsoft.com/exchange/autodiscover/mobilesync/";
static private final String AUTO_DISCOVER_PAGE = "/autodiscover/autodiscover.xml";
static private final int AUTO_DISCOVER_REDIRECT_CODE = 451;
static public final String EAS_12_POLICY_TYPE = "MS-EAS-Provisioning-WBXML";
static public final String EAS_2_POLICY_TYPE = "MS-WAP-Provisioning-XML";
/**
* We start with an 8 minute timeout, and increase/decrease by 3 minutes at a time. There's
* no point having a timeout shorter than 5 minutes, I think; at that point, we can just let
* the ping exception out. The maximum I use is 17 minutes, which is really an empirical
* choice; too long and we risk silent connection loss and loss of push for that period. Too
* short and we lose efficiency/battery life.
*
* If we ever have to drop the ping timeout, we'll never increase it again. There's no point
* going into hysteresis; the NAT timeout isn't going to change without a change in connection,
* which will cause the sync service to be restarted at the starting heartbeat and going through
* the process again.
*/
static private final int PING_MINUTES = 60; // in seconds
static private final int PING_FUDGE_LOW = 10;
static private final int PING_STARTING_HEARTBEAT = (8*PING_MINUTES)-PING_FUDGE_LOW;
static private final int PING_HEARTBEAT_INCREMENT = 3*PING_MINUTES;
// Maximum number of times we'll allow a sync to "loop" with MoreAvailable true before
// forcing it to stop. This number has been determined empirically.
static private final int MAX_LOOPING_COUNT = 100;
static private final int PROTOCOL_PING_STATUS_COMPLETED = 1;
// The amount of time we allow for a thread to release its post lock after receiving an alert
static private final int POST_LOCK_TIMEOUT = 10*SECONDS;
// Fallbacks (in minutes) for ping loop failures
static private final int MAX_PING_FAILURES = 1;
static private final int PING_FALLBACK_INBOX = 5;
static private final int PING_FALLBACK_PIM = 25;
// MSFT's custom HTTP result code indicating the need to provision
static private final int HTTP_NEED_PROVISIONING = 449;
// The EAS protocol Provision status for "we implement all of the policies"
static private final String PROVISION_STATUS_OK = "1";
// The EAS protocol Provision status meaning "we partially implement the policies"
static private final String PROVISION_STATUS_PARTIAL = "2";
// Reasonable default
public String mProtocolVersion = Eas.DEFAULT_PROTOCOL_VERSION;
public Double mProtocolVersionDouble;
protected String mDeviceId = null;
/*package*/ String mDeviceType = "Android";
/*package*/ String mAuthString = null;
private String mCmdString = null;
public String mHostAddress;
public String mUserName;
public String mPassword;
private boolean mSsl = true;
private boolean mTrustSsl = false;
public ContentResolver mContentResolver;
private String[] mBindArguments = new String[2];
private ArrayList<String> mPingChangeList;
// The HttpPost in progress
private volatile HttpPost mPendingPost = null;
// Our heartbeat when we are waiting for ping boxes to be ready
/*package*/ int mPingForceHeartbeat = 2*PING_MINUTES;
// The minimum heartbeat we will send
/*package*/ int mPingMinHeartbeat = (5*PING_MINUTES)-PING_FUDGE_LOW;
// The maximum heartbeat we will send
/*package*/ int mPingMaxHeartbeat = (17*PING_MINUTES)-PING_FUDGE_LOW;
// The ping time (in seconds)
/*package*/ int mPingHeartbeat = PING_STARTING_HEARTBEAT;
// The longest successful ping heartbeat
private int mPingHighWaterMark = 0;
// Whether we've ever lowered the heartbeat
/*package*/ boolean mPingHeartbeatDropped = false;
// Whether a POST was aborted due to alarm (watchdog alarm)
private boolean mPostAborted = false;
// Whether a POST was aborted due to reset
private boolean mPostReset = false;
// Whether or not the sync service is valid (usable)
public boolean mIsValid = true;
public EasSyncService(Context _context, Mailbox _mailbox) {
super(_context, _mailbox);
mContentResolver = _context.getContentResolver();
if (mAccount == null) {
mIsValid = false;
return;
}
HostAuth ha = HostAuth.restoreHostAuthWithId(_context, mAccount.mHostAuthKeyRecv);
if (ha == null) {
mIsValid = false;
return;
}
mSsl = (ha.mFlags & HostAuth.FLAG_SSL) != 0;
mTrustSsl = (ha.mFlags & HostAuth.FLAG_TRUST_ALL_CERTIFICATES) != 0;
}
private EasSyncService(String prefix) {
super(prefix);
}
public EasSyncService() {
this("EAS Validation");
}
@Override
/**
* Try to wake up a sync thread that is waiting on an HttpClient POST and has waited past its
* socket timeout without having thrown an Exception
*
* @return true if the POST was successfully stopped; false if we've failed and interrupted
* the thread
*/
public boolean alarm() {
HttpPost post;
if (mThread == null) return true;
String threadName = mThread.getName();
// Synchronize here so that we are guaranteed to have valid mPendingPost and mPostLock
// executePostWithTimeout (which executes the HttpPost) also uses this lock
synchronized(getSynchronizer()) {
// Get a reference to the current post lock
post = mPendingPost;
if (post != null) {
if (Eas.USER_LOG) {
URI uri = post.getURI();
if (uri != null) {
String query = uri.getQuery();
if (query == null) {
query = "POST";
}
userLog(threadName, ": Alert, aborting ", query);
} else {
userLog(threadName, ": Alert, no URI?");
}
}
// Abort the POST
mPostAborted = true;
post.abort();
} else {
// If there's no POST, we're done
userLog("Alert, no pending POST");
return true;
}
}
// Wait for the POST to finish
try {
Thread.sleep(POST_LOCK_TIMEOUT);
} catch (InterruptedException e) {
}
State s = mThread.getState();
if (Eas.USER_LOG) {
userLog(threadName + ": State = " + s.name());
}
synchronized (getSynchronizer()) {
// If the thread is still hanging around and the same post is pending, let's try to
// stop the thread with an interrupt.
if ((s != State.TERMINATED) && (mPendingPost != null) && (mPendingPost == post)) {
mStop = true;
mThread.interrupt();
userLog("Interrupting...");
// Let the caller know we had to interrupt the thread
return false;
}
}
// Let the caller know that the alarm was handled normally
return true;
}
@Override
public void reset() {
synchronized(getSynchronizer()) {
if (mPendingPost != null) {
URI uri = mPendingPost.getURI();
if (uri != null) {
String query = uri.getQuery();
if (query.startsWith("Cmd=Ping")) {
userLog("Reset, aborting Ping");
mPostReset = true;
mPendingPost.abort();
}
}
}
}
}
@Override
public void stop() {
mStop = true;
synchronized(getSynchronizer()) {
if (mPendingPost != null) {
mPendingPost.abort();
}
}
}
/**
* Determine whether an HTTP code represents an authentication error
* @param code the HTTP code returned by the server
* @return whether or not the code represents an authentication error
*/
protected boolean isAuthError(int code) {
return (code == HttpStatus.SC_UNAUTHORIZED) || (code == HttpStatus.SC_FORBIDDEN);
}
/**
* Determine whether an HTTP code represents a provisioning error
* @param code the HTTP code returned by the server
* @return whether or not the code represents an provisioning error
*/
protected boolean isProvisionError(int code) {
return (code == HTTP_NEED_PROVISIONING) || (code == HttpStatus.SC_FORBIDDEN);
}
private void setupProtocolVersion(EasSyncService service, Header versionHeader)
throws MessagingException {
// The string is a comma separated list of EAS versions in ascending order
// e.g. 1.0,2.0,2.5,12.0,12.1
String supportedVersions = versionHeader.getValue();
userLog("Server supports versions: ", supportedVersions);
String[] supportedVersionsArray = supportedVersions.split(",");
String ourVersion = null;
// Find the most recent version we support
for (String version: supportedVersionsArray) {
if (version.equals(Eas.SUPPORTED_PROTOCOL_EX2003) ||
version.equals(Eas.SUPPORTED_PROTOCOL_EX2007)) {
ourVersion = version;
}
}
// If we don't support any of the servers supported versions, throw an exception here
// This will cause validation to fail
if (ourVersion == null) {
Log.w(TAG, "No supported EAS versions: " + supportedVersions);
throw new MessagingException(MessagingException.PROTOCOL_VERSION_UNSUPPORTED);
} else {
service.mProtocolVersion = ourVersion;
service.mProtocolVersionDouble = Double.parseDouble(ourVersion);
if (service.mAccount != null) {
service.mAccount.mProtocolVersion = ourVersion;
}
}
}
@Override
public void validateAccount(String hostAddress, String userName, String password, int port,
boolean ssl, boolean trustCertificates, Context context) throws MessagingException {
try {
userLog("Testing EAS: ", hostAddress, ", ", userName, ", ssl = ", ssl ? "1" : "0");
EasSyncService svc = new EasSyncService("%TestAccount%");
svc.mContext = context;
svc.mHostAddress = hostAddress;
svc.mUserName = userName;
svc.mPassword = password;
svc.mSsl = ssl;
svc.mTrustSsl = trustCertificates;
// We mustn't use the "real" device id or we'll screw up current accounts
// Any string will do, but we'll go for "validate"
svc.mDeviceId = "validate";
HttpResponse resp = svc.sendHttpClientOptions();
int code = resp.getStatusLine().getStatusCode();
userLog("Validation (OPTIONS) response: " + code);
if (code == HttpStatus.SC_OK) {
// No exception means successful validation
Header commands = resp.getFirstHeader("MS-ASProtocolCommands");
Header versions = resp.getFirstHeader("ms-asprotocolversions");
if (commands == null || versions == null) {
userLog("OPTIONS response without commands or versions; reporting I/O error");
throw new MessagingException(MessagingException.IOERROR);
}
// Make sure we've got the right protocol version set up
setupProtocolVersion(svc, versions);
// Run second test here for provisioning failures...
Serializer s = new Serializer();
userLog("Try folder sync");
s.start(Tags.FOLDER_FOLDER_SYNC).start(Tags.FOLDER_SYNC_KEY).text("0")
.end().end().done();
resp = svc.sendHttpClientPost("FolderSync", s.toByteArray());
code = resp.getStatusLine().getStatusCode();
// We'll get one of the following responses if policies are required by the server
if (code == HttpStatus.SC_FORBIDDEN || code == HTTP_NEED_PROVISIONING) {
// Get the policies and see if we are able to support them
if (svc.canProvision() != null) {
// If so, send the advisory Exception (the account may be created later)
throw new MessagingException(MessagingException.SECURITY_POLICIES_REQUIRED);
} else
// If not, send the unsupported Exception (the account won't be created)
throw new MessagingException(
MessagingException.SECURITY_POLICIES_UNSUPPORTED);
} else if (code == HttpStatus.SC_NOT_FOUND) {
// We get a 404 from OWA addresses (which are NOT EAS addresses)
throw new MessagingException(MessagingException.PROTOCOL_VERSION_UNSUPPORTED);
} else if (code != HttpStatus.SC_OK) {
// Fail generically with anything other than success
userLog("Unexpected response for FolderSync: ", code);
throw new MessagingException(MessagingException.UNSPECIFIED_EXCEPTION);
}
userLog("Validation successful");
return;
}
if (isAuthError(code)) {
userLog("Authentication failed");
throw new AuthenticationFailedException("Validation failed");
} else {
// TODO Need to catch other kinds of errors (e.g. policy) For now, report the code.
userLog("Validation failed, reporting I/O error: ", code);
throw new MessagingException(MessagingException.IOERROR);
}
} catch (IOException e) {
Throwable cause = e.getCause();
if (cause != null && cause instanceof CertificateException) {
userLog("CertificateException caught: ", e.getMessage());
throw new MessagingException(MessagingException.GENERAL_SECURITY);
}
userLog("IOException caught: ", e.getMessage());
throw new MessagingException(MessagingException.IOERROR);
}
}
/**
* Gets the redirect location from the HTTP headers and uses that to modify the HttpPost so that
* it can be reused
*
* @param resp the HttpResponse that indicates a redirect (451)
* @param post the HttpPost that was originally sent to the server
* @return the HttpPost, updated with the redirect location
*/
private HttpPost getRedirect(HttpResponse resp, HttpPost post) {
Header locHeader = resp.getFirstHeader("X-MS-Location");
if (locHeader != null) {
String loc = locHeader.getValue();
// If we've gotten one and it shows signs of looking like an address, we try
// sending our request there
if (loc != null && loc.startsWith("http")) {
post.setURI(URI.create(loc));
return post;
}
}
return null;
}
/**
* Send the POST command to the autodiscover server, handling a redirect, if necessary, and
* return the HttpResponse. If we get a 401 (unauthorized) error and we're using the
* full email address, try the bare user name instead (e.g. foo instead of foo@bar.com)
*
* @param client the HttpClient to be used for the request
* @param post the HttpPost we're going to send
* @param canRetry whether we can retry using the bare name on an authentication failure (401)
* @return an HttpResponse from the original or redirect server
* @throws IOException on any IOException within the HttpClient code
* @throws MessagingException
*/
private HttpResponse postAutodiscover(HttpClient client, HttpPost post, boolean canRetry)
throws IOException, MessagingException {
userLog("Posting autodiscover to: " + post.getURI());
HttpResponse resp = executePostWithTimeout(client, post, COMMAND_TIMEOUT);
int code = resp.getStatusLine().getStatusCode();
// On a redirect, try the new location
if (code == AUTO_DISCOVER_REDIRECT_CODE) {
post = getRedirect(resp, post);
if (post != null) {
userLog("Posting autodiscover to redirect: " + post.getURI());
return executePostWithTimeout(client, post, COMMAND_TIMEOUT);
}
// 401 (Unauthorized) is for true auth errors when used in Autodiscover
} else if (code == HttpStatus.SC_UNAUTHORIZED) {
if (canRetry && mUserName.contains("@")) {
// Try again using the bare user name
int atSignIndex = mUserName.indexOf('@');
mUserName = mUserName.substring(0, atSignIndex);
cacheAuthAndCmdString();
userLog("401 received; trying username: ", mUserName);
// Recreate the basic authentication string and reset the header
post.removeHeaders("Authorization");
post.setHeader("Authorization", mAuthString);
return postAutodiscover(client, post, false);
}
throw new MessagingException(MessagingException.AUTHENTICATION_FAILED);
// 403 (and others) we'll just punt on
} else if (code != HttpStatus.SC_OK) {
// We'll try the next address if this doesn't work
userLog("Code: " + code + ", throwing IOException");
throw new IOException();
}
return resp;
}
/**
* Use the Exchange 2007 AutoDiscover feature to try to retrieve server information using
* only an email address and the password
*
* @param userName the user's email address
* @param password the user's password
* @return a HostAuth ready to be saved in an Account or null (failure)
*/
public Bundle tryAutodiscover(String userName, String password) throws RemoteException {
XmlSerializer s = Xml.newSerializer();
ByteArrayOutputStream os = new ByteArrayOutputStream(1024);
HostAuth hostAuth = new HostAuth();
Bundle bundle = new Bundle();
bundle.putInt(EmailServiceProxy.AUTO_DISCOVER_BUNDLE_ERROR_CODE,
MessagingException.NO_ERROR);
try {
// Build the XML document that's sent to the autodiscover server(s)
s.setOutput(os, "UTF-8");
s.startDocument("UTF-8", false);
s.startTag(null, "Autodiscover");
s.attribute(null, "xmlns", AUTO_DISCOVER_SCHEMA_PREFIX + "requestschema/2006");
s.startTag(null, "Request");
s.startTag(null, "EMailAddress").text(userName).endTag(null, "EMailAddress");
s.startTag(null, "AcceptableResponseSchema");
s.text(AUTO_DISCOVER_SCHEMA_PREFIX + "responseschema/2006");
s.endTag(null, "AcceptableResponseSchema");
s.endTag(null, "Request");
s.endTag(null, "Autodiscover");
s.endDocument();
String req = os.toString();
// Initialize the user name and password
mUserName = userName;
mPassword = password;
// Make sure the authentication string is recreated and cached
cacheAuthAndCmdString();
// Split out the domain name
int amp = userName.indexOf('@');
// The UI ensures that userName is a valid email address
if (amp < 0) {
throw new RemoteException();
}
String domain = userName.substring(amp + 1);
// There are up to four attempts here; the two URLs that we're supposed to try per the
// specification, and up to one redirect for each (handled in postAutodiscover)
// Note: The expectation is that, of these four attempts, only a single server will
// actually be identified as the autodiscover server. For the identified server,
// we may also try a 2nd connection with a different format (bare name).
// Try the domain first and see if we can get a response
HttpPost post = new HttpPost("https://" + domain + AUTO_DISCOVER_PAGE);
setHeaders(post, false);
post.setHeader("Content-Type", "text/xml");
post.setEntity(new StringEntity(req));
HttpClient client = getHttpClient(COMMAND_TIMEOUT);
HttpResponse resp;
try {
resp = postAutodiscover(client, post, true /*canRetry*/);
} catch (IOException e1) {
userLog("IOException in autodiscover; trying alternate address");
// We catch the IOException here because we have an alternate address to try
post.setURI(URI.create("https://autodiscover." + domain + AUTO_DISCOVER_PAGE));
// If we fail here, we're out of options, so we let the outer try catch the
// IOException and return null
resp = postAutodiscover(client, post, true /*canRetry*/);
}
// Get the "final" code; if it's not 200, just return null
int code = resp.getStatusLine().getStatusCode();
userLog("Code: " + code);
if (code != HttpStatus.SC_OK) return null;
// At this point, we have a 200 response (SC_OK)
HttpEntity e = resp.getEntity();
InputStream is = e.getContent();
try {
// The response to Autodiscover is regular XML (not WBXML)
// If we ever get an error in this process, we'll just punt and return null
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser parser = factory.newPullParser();
parser.setInput(is, "UTF-8");
int type = parser.getEventType();
if (type == XmlPullParser.START_DOCUMENT) {
type = parser.next();
if (type == XmlPullParser.START_TAG) {
String name = parser.getName();
if (name.equals("Autodiscover")) {
hostAuth = new HostAuth();
parseAutodiscover(parser, hostAuth);
// On success, we'll have a server address and login
if (hostAuth.mAddress != null) {
// Fill in the rest of the HostAuth
// We use the user name and password that were successful during
// the autodiscover process
hostAuth.mLogin = mUserName;
hostAuth.mPassword = mPassword;
hostAuth.mPort = 443;
hostAuth.mProtocol = "eas";
hostAuth.mFlags =
HostAuth.FLAG_SSL | HostAuth.FLAG_AUTHENTICATE;
bundle.putParcelable(
EmailServiceProxy.AUTO_DISCOVER_BUNDLE_HOST_AUTH, hostAuth);
} else {
bundle.putInt(EmailServiceProxy.AUTO_DISCOVER_BUNDLE_ERROR_CODE,
MessagingException.UNSPECIFIED_EXCEPTION);
}
}
}
}
} catch (XmlPullParserException e1) {
// This would indicate an I/O error of some sort
// We will simply return null and user can configure manually
}
// There's no reason at all for exceptions to be thrown, and it's ok if so.
// We just won't do auto-discover; user can configure manually
} catch (IllegalArgumentException e) {
bundle.putInt(EmailServiceProxy.AUTO_DISCOVER_BUNDLE_ERROR_CODE,
MessagingException.UNSPECIFIED_EXCEPTION);
} catch (IllegalStateException e) {
bundle.putInt(EmailServiceProxy.AUTO_DISCOVER_BUNDLE_ERROR_CODE,
MessagingException.UNSPECIFIED_EXCEPTION);
} catch (IOException e) {
userLog("IOException in Autodiscover", e);
bundle.putInt(EmailServiceProxy.AUTO_DISCOVER_BUNDLE_ERROR_CODE,
MessagingException.IOERROR);
} catch (MessagingException e) {
bundle.putInt(EmailServiceProxy.AUTO_DISCOVER_BUNDLE_ERROR_CODE,
MessagingException.AUTHENTICATION_FAILED);
}
return bundle;
}
void parseServer(XmlPullParser parser, HostAuth hostAuth)
throws XmlPullParserException, IOException {
boolean mobileSync = false;
while (true) {
int type = parser.next();
if (type == XmlPullParser.END_TAG && parser.getName().equals("Server")) {
break;
} else if (type == XmlPullParser.START_TAG) {
String name = parser.getName();
if (name.equals("Type")) {
if (parser.nextText().equals("MobileSync")) {
mobileSync = true;
}
} else if (mobileSync && name.equals("Url")) {
String url = parser.nextText().toLowerCase();
// This will look like https://<server address>/Microsoft-Server-ActiveSync
// We need to extract the <server address>
if (url.startsWith("https://") &&
url.endsWith("/microsoft-server-activesync")) {
int lastSlash = url.lastIndexOf('/');
hostAuth.mAddress = url.substring(8, lastSlash);
userLog("Autodiscover, server: " + hostAuth.mAddress);
}
}
}
}
}
void parseSettings(XmlPullParser parser, HostAuth hostAuth)
throws XmlPullParserException, IOException {
while (true) {
int type = parser.next();
if (type == XmlPullParser.END_TAG && parser.getName().equals("Settings")) {
break;
} else if (type == XmlPullParser.START_TAG) {
String name = parser.getName();
if (name.equals("Server")) {
parseServer(parser, hostAuth);
}
}
}
}
void parseAction(XmlPullParser parser, HostAuth hostAuth)
throws XmlPullParserException, IOException {
while (true) {
int type = parser.next();
if (type == XmlPullParser.END_TAG && parser.getName().equals("Action")) {
break;
} else if (type == XmlPullParser.START_TAG) {
String name = parser.getName();
if (name.equals("Error")) {
// Should parse the error
} else if (name.equals("Redirect")) {
Log.d(TAG, "Redirect: " + parser.nextText());
} else if (name.equals("Settings")) {
parseSettings(parser, hostAuth);
}
}
}
}
void parseUser(XmlPullParser parser, HostAuth hostAuth)
throws XmlPullParserException, IOException {
while (true) {
int type = parser.next();
if (type == XmlPullParser.END_TAG && parser.getName().equals("User")) {
break;
} else if (type == XmlPullParser.START_TAG) {
String name = parser.getName();
if (name.equals("EMailAddress")) {
String addr = parser.nextText();
userLog("Autodiscover, email: " + addr);
} else if (name.equals("DisplayName")) {
String dn = parser.nextText();
userLog("Autodiscover, user: " + dn);
}
}
}
}
void parseResponse(XmlPullParser parser, HostAuth hostAuth)
throws XmlPullParserException, IOException {
while (true) {
int type = parser.next();
if (type == XmlPullParser.END_TAG && parser.getName().equals("Response")) {
break;
} else if (type == XmlPullParser.START_TAG) {
String name = parser.getName();
if (name.equals("User")) {
parseUser(parser, hostAuth);
} else if (name.equals("Action")) {
parseAction(parser, hostAuth);
}
}
}
}
void parseAutodiscover(XmlPullParser parser, HostAuth hostAuth)
throws XmlPullParserException, IOException {
while (true) {
int type = parser.nextTag();
if (type == XmlPullParser.END_TAG && parser.getName().equals("Autodiscover")) {
break;
} else if (type == XmlPullParser.START_TAG && parser.getName().equals("Response")) {
parseResponse(parser, hostAuth);
}
}
}
/**
* Contact the GAL and obtain a list of matching accounts
* @param context caller's context
* @param accountId the account Id to search
* @param filter the characters entered so far
* @return a result record
*
* TODO: shorter timeout for interactive lookup
* TODO: make watchdog actually work (it doesn't understand our service w/Mailbox == 0)
* TODO: figure out why sendHttpClientPost() hangs - possibly pool exhaustion
*/
static public GalResult searchGal(Context context, long accountId, String filter) {
Account acct = SyncManager.getAccountById(accountId);
if (acct != null) {
HostAuth ha = HostAuth.restoreHostAuthWithId(context, acct.mHostAuthKeyRecv);
EasSyncService svc = new EasSyncService("%GalLookupk%");
try {
svc.mContext = context;
svc.mHostAddress = ha.mAddress;
svc.mUserName = ha.mLogin;
svc.mPassword = ha.mPassword;
svc.mSsl = (ha.mFlags & HostAuth.FLAG_SSL) != 0;
svc.mTrustSsl = (ha.mFlags & HostAuth.FLAG_TRUST_ALL_CERTIFICATES) != 0;
svc.mDeviceId = SyncManager.getDeviceId();
svc.mAccount = acct;
Serializer s = new Serializer();
s.start(Tags.SEARCH_SEARCH).start(Tags.SEARCH_STORE);
s.data(Tags.SEARCH_NAME, "GAL").data(Tags.SEARCH_QUERY, filter);
s.start(Tags.SEARCH_OPTIONS);
s.data(Tags.SEARCH_RANGE, "0-19"); // Return 0..20 results
s.end().end().end().done();
if (DEBUG_GAL_SERVICE) svc.userLog("GAL lookup starting for " + ha.mAddress);
HttpResponse resp = svc.sendHttpClientPost("Search", s.toByteArray());
int code = resp.getStatusLine().getStatusCode();
if (code == HttpStatus.SC_OK) {
InputStream is = resp.getEntity().getContent();
GalParser gp = new GalParser(is, svc);
if (gp.parse()) {
if (DEBUG_GAL_SERVICE) svc.userLog("GAL lookup OK for " + ha.mAddress);
return gp.getGalResult();
} else {
if (DEBUG_GAL_SERVICE) svc.userLog("GAL lookup returned no matches");
}
} else {
svc.userLog("GAL lookup returned " + code);
}
} catch (IOException e) {
// GAL is non-critical; we'll just go on
svc.userLog("GAL lookup exception " + e);
}
}
return null;
}
private void doStatusCallback(long messageId, long attachmentId, int status) {
try {
SyncManager.callback().loadAttachmentStatus(messageId, attachmentId, status, 0);
} catch (RemoteException e) {
// No danger if the client is no longer around
}
}
private void doProgressCallback(long messageId, long attachmentId, int progress) {
try {
SyncManager.callback().loadAttachmentStatus(messageId, attachmentId,
EmailServiceStatus.IN_PROGRESS, progress);
} catch (RemoteException e) {
// No danger if the client is no longer around
}
}
public File createUniqueFileInternal(String dir, String filename) {
File directory;
if (dir == null) {
directory = mContext.getFilesDir();
} else {
directory = new File(dir);
}
if (!directory.exists()) {
directory.mkdirs();
}
File file = new File(directory, filename);
if (!file.exists()) {
return file;
}
// Get the extension of the file, if any.
int index = filename.lastIndexOf('.');
String name = filename;
String extension = "";
if (index != -1) {
name = filename.substring(0, index);
extension = filename.substring(index);
}
for (int i = 2; i < Integer.MAX_VALUE; i++) {
file = new File(directory, name + '-' + i + extension);
if (!file.exists()) {
return file;
}
}
return null;
}
/**
* Loads an attachment, based on the PartRequest passed in. The PartRequest is basically our
* wrapper for Attachment
* @param req the part (attachment) to be retrieved
* @throws IOException
*/
protected void getAttachment(PartRequest req) throws IOException {
Attachment att = req.mAttachment;
Message msg = Message.restoreMessageWithId(mContext, att.mMessageKey);
doProgressCallback(msg.mId, att.mId, 0);
String cmd = "GetAttachment&AttachmentName=" + att.mLocation;
HttpResponse res = sendHttpClientPost(cmd, null, COMMAND_TIMEOUT);
int status = res.getStatusLine().getStatusCode();
if (status == HttpStatus.SC_OK) {
HttpEntity e = res.getEntity();
int len = (int)e.getContentLength();
InputStream is = res.getEntity().getContent();
File f = (req.mDestination != null)
? new File(req.mDestination)
: createUniqueFileInternal(req.mDestination, att.mFileName);
if (f != null) {
// Ensure that the target directory exists
File destDir = f.getParentFile();
if (!destDir.exists()) {
destDir.mkdirs();
}
FileOutputStream os = new FileOutputStream(f);
// len > 0 means that Content-Length was set in the headers
// len < 0 means "chunked" transfer-encoding
if (len != 0) {
try {
mPendingRequest = req;
byte[] bytes = new byte[CHUNK_SIZE];
int length = len;
// Loop terminates 1) when EOF is reached or 2) if an IOException occurs
// One of these is guaranteed to occur
int totalRead = 0;
userLog("Attachment content-length: ", len);
while (true) {
int read = is.read(bytes, 0, CHUNK_SIZE);
// read < 0 means that EOF was reached
if (read < 0) {
userLog("Attachment load reached EOF, totalRead: ", totalRead);
break;
}
// Keep track of how much we've read for progress callback
totalRead += read;
// Write these bytes out
os.write(bytes, 0, read);
// We can't report percentages if this is chunked; by definition, the
// length of incoming data is unknown
if (length > 0) {
// Belt and suspenders check to prevent runaway reading
if (totalRead > length) {
errorLog("totalRead is greater than attachment length?");
break;
}
int pct = (totalRead * 100) / length;
doProgressCallback(msg.mId, att.mId, pct);
}
}
} finally {
mPendingRequest = null;
}
}
os.flush();
os.close();
// EmailProvider will throw an exception if we try to update an unsaved attachment
if (att.isSaved()) {
String contentUriString = (req.mContentUriString != null)
? req.mContentUriString
: "file://" + f.getAbsolutePath();
ContentValues cv = new ContentValues();
cv.put(AttachmentColumns.CONTENT_URI, contentUriString);
att.update(mContext, cv);
doStatusCallback(msg.mId, att.mId, EmailServiceStatus.SUCCESS);
}
}
} else {
doStatusCallback(msg.mId, att.mId, EmailServiceStatus.MESSAGE_NOT_FOUND);
}
}
/**
* Send an email responding to a Message that has been marked as a meeting request. The message
* will consist a little bit of event information and an iCalendar attachment
* @param msg the meeting request email
*/
private void sendMeetingResponseMail(Message msg, int response) {
// Get the meeting information; we'd better have some...
PackedString meetingInfo = new PackedString(msg.mMeetingInfo);
if (meetingInfo == null) return;
// This will come as "First Last" <box@server.blah>, so we use Address to
// parse it into parts; we only need the email address part for the ics file
Address[] addrs = Address.parse(meetingInfo.get(MeetingInfo.MEETING_ORGANIZER_EMAIL));
// It shouldn't be possible, but handle it anyway
if (addrs.length != 1) return;
String organizerEmail = addrs[0].getAddress();
String dtStamp = meetingInfo.get(MeetingInfo.MEETING_DTSTAMP);
String dtStart = meetingInfo.get(MeetingInfo.MEETING_DTSTART);
String dtEnd = meetingInfo.get(MeetingInfo.MEETING_DTEND);
// What we're doing here is to create an Entity that looks like an Event as it would be
// stored by CalendarProvider
ContentValues entityValues = new ContentValues();
Entity entity = new Entity(entityValues);
// Fill in times, location, title, and organizer
entityValues.put("DTSTAMP",
CalendarUtilities.convertEmailDateTimeToCalendarDateTime(dtStamp));
entityValues.put(Events.DTSTART, Utility.parseEmailDateTimeToMillis(dtStart));
entityValues.put(Events.DTEND, Utility.parseEmailDateTimeToMillis(dtEnd));
entityValues.put(Events.EVENT_LOCATION, meetingInfo.get(MeetingInfo.MEETING_LOCATION));
entityValues.put(Events.TITLE, meetingInfo.get(MeetingInfo.MEETING_TITLE));
entityValues.put(Events.ORGANIZER, organizerEmail);
// Add ourselves as an attendee, using our account email address
ContentValues attendeeValues = new ContentValues();
attendeeValues.put(Attendees.ATTENDEE_RELATIONSHIP,
Attendees.RELATIONSHIP_ATTENDEE);
attendeeValues.put(Attendees.ATTENDEE_EMAIL, mAccount.mEmailAddress);
entity.addSubValue(Attendees.CONTENT_URI, attendeeValues);
// Add the organizer
ContentValues organizerValues = new ContentValues();
organizerValues.put(Attendees.ATTENDEE_RELATIONSHIP,
Attendees.RELATIONSHIP_ORGANIZER);
organizerValues.put(Attendees.ATTENDEE_EMAIL, organizerEmail);
entity.addSubValue(Attendees.CONTENT_URI, organizerValues);
// Create a message from the Entity we've built. The message will have fields like
// to, subject, date, and text filled in. There will also be an "inline" attachment
// which is in iCalendar format
int flag;
switch(response) {
case EmailServiceConstants.MEETING_REQUEST_ACCEPTED:
flag = Message.FLAG_OUTGOING_MEETING_ACCEPT;
break;
case EmailServiceConstants.MEETING_REQUEST_DECLINED:
flag = Message.FLAG_OUTGOING_MEETING_DECLINE;
break;
case EmailServiceConstants.MEETING_REQUEST_TENTATIVE:
default:
flag = Message.FLAG_OUTGOING_MEETING_TENTATIVE;
break;
}
Message outgoingMsg =
CalendarUtilities.createMessageForEntity(mContext, entity, flag,
meetingInfo.get(MeetingInfo.MEETING_UID), mAccount);
// Assuming we got a message back (we might not if the event has been deleted), send it
if (outgoingMsg != null) {
EasOutboxService.sendMessage(mContext, mAccount.mId, outgoingMsg);
}
}
/**
* Responds to a meeting request. The MeetingResponseRequest is basically our
* wrapper for the meetingResponse service call
* @param req the request (message id and response code)
* @throws IOException
*/
protected void sendMeetingResponse(MeetingResponseRequest req) throws IOException {
// Retrieve the message and mailbox; punt if either are null
Message msg = Message.restoreMessageWithId(mContext, req.mMessageId);
if (msg == null) return;
Mailbox mailbox = Mailbox.restoreMailboxWithId(mContext, msg.mMailboxKey);
if (mailbox == null) return;
Serializer s = new Serializer();
s.start(Tags.MREQ_MEETING_RESPONSE).start(Tags.MREQ_REQUEST);
s.data(Tags.MREQ_USER_RESPONSE, Integer.toString(req.mResponse));
s.data(Tags.MREQ_COLLECTION_ID, mailbox.mServerId);
s.data(Tags.MREQ_REQ_ID, msg.mServerId);
s.end().end().done();
HttpResponse res = sendHttpClientPost("MeetingResponse", s.toByteArray());
int status = res.getStatusLine().getStatusCode();
if (status == HttpStatus.SC_OK) {
HttpEntity e = res.getEntity();
int len = (int)e.getContentLength();
InputStream is = res.getEntity().getContent();
if (len != 0) {
new MeetingResponseParser(is, this).parse();
sendMeetingResponseMail(msg, req.mResponse);
}
} else if (isAuthError(status)) {
throw new EasAuthenticationException();
} else {
userLog("Meeting response request failed, code: " + status);
throw new IOException();
}
}
/**
* Using mUserName and mPassword, create and cache mAuthString and mCacheString, which are used
* in all HttpPost commands. This should be called if these strings are null, or if mUserName
* and/or mPassword are changed
*/
@SuppressWarnings("deprecation")
private void cacheAuthAndCmdString() {
String safeUserName = URLEncoder.encode(mUserName);
String cs = mUserName + ':' + mPassword;
mAuthString = "Basic " + Base64.encodeToString(cs.getBytes(), Base64.NO_WRAP);
mCmdString = "&User=" + safeUserName + "&DeviceId=" + mDeviceId +
"&DeviceType=" + mDeviceType;
}
private String makeUriString(String cmd, String extra) throws IOException {
// Cache the authentication string and the command string
if (mAuthString == null || mCmdString == null) {
cacheAuthAndCmdString();
}
String us = (mSsl ? (mTrustSsl ? "httpts" : "https") : "http") + "://" + mHostAddress +
"/Microsoft-Server-ActiveSync";
if (cmd != null) {
us += "?Cmd=" + cmd + mCmdString;
}
if (extra != null) {
us += extra;
}
return us;
}
/**
* Set standard HTTP headers, using a policy key if required
* @param method the method we are going to send
* @param usePolicyKey whether or not a policy key should be sent in the headers
*/
/*package*/ void setHeaders(HttpRequestBase method, boolean usePolicyKey) {
method.setHeader("Authorization", mAuthString);
method.setHeader("MS-ASProtocolVersion", mProtocolVersion);
method.setHeader("Connection", "keep-alive");
method.setHeader("User-Agent", mDeviceType + '/' + Eas.VERSION);
if (usePolicyKey) {
// If there's an account in existence, use its key; otherwise (we're creating the
// account), send "0". The server will respond with code 449 if there are policies
// to be enforced
String key = "0";
if (mAccount != null) {
String accountKey = mAccount.mSecuritySyncKey;
if (!TextUtils.isEmpty(accountKey)) {
key = accountKey;
}
}
method.setHeader("X-MS-PolicyKey", key);
}
}
private ClientConnectionManager getClientConnectionManager() {
return SyncManager.getClientConnectionManager();
}
private HttpClient getHttpClient(int timeout) {
HttpParams params = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(params, CONNECTION_TIMEOUT);
HttpConnectionParams.setSoTimeout(params, timeout);
HttpConnectionParams.setSocketBufferSize(params, 8192);
HttpClient client = new DefaultHttpClient(getClientConnectionManager(), params);
return client;
}
protected HttpResponse sendHttpClientPost(String cmd, byte[] bytes) throws IOException {
return sendHttpClientPost(cmd, new ByteArrayEntity(bytes), COMMAND_TIMEOUT);
}
protected HttpResponse sendHttpClientPost(String cmd, HttpEntity entity) throws IOException {
return sendHttpClientPost(cmd, entity, COMMAND_TIMEOUT);
}
protected HttpResponse sendPing(byte[] bytes, int heartbeat) throws IOException {
Thread.currentThread().setName(mAccount.mDisplayName + ": Ping");
if (Eas.USER_LOG) {
userLog("Send ping, timeout: " + heartbeat + "s, high: " + mPingHighWaterMark + 's');
}
return sendHttpClientPost(PING_COMMAND, new ByteArrayEntity(bytes), (heartbeat+5)*SECONDS);
}
/**
* Convenience method for executePostWithTimeout for use other than with the Ping command
*/
protected HttpResponse executePostWithTimeout(HttpClient client, HttpPost method, int timeout)
throws IOException {
return executePostWithTimeout(client, method, timeout, false);
}
/**
* Handle executing an HTTP POST command with proper timeout, watchdog, and ping behavior
* @param client the HttpClient
* @param method the HttpPost
* @param timeout the timeout before failure, in ms
* @param isPingCommand whether the POST is for the Ping command (requires wakelock logic)
* @return the HttpResponse
* @throws IOException
*/
protected HttpResponse executePostWithTimeout(HttpClient client, HttpPost method, int timeout,
boolean isPingCommand) throws IOException {
synchronized(getSynchronizer()) {
mPendingPost = method;
long alarmTime = timeout + WATCHDOG_TIMEOUT_ALLOWANCE;
if (isPingCommand) {
SyncManager.runAsleep(mMailboxId, alarmTime);
} else {
SyncManager.setWatchdogAlarm(mMailboxId, alarmTime);
}
}
try {
return client.execute(method);
} finally {
synchronized(getSynchronizer()) {
if (isPingCommand) {
SyncManager.runAwake(mMailboxId);
} else {
SyncManager.clearWatchdogAlarm(mMailboxId);
}
mPendingPost = null;
}
}
}
protected HttpResponse sendHttpClientPost(String cmd, HttpEntity entity, int timeout)
throws IOException {
HttpClient client = getHttpClient(timeout);
boolean isPingCommand = cmd.equals(PING_COMMAND);
// Split the mail sending commands
String extra = null;
boolean msg = false;
if (cmd.startsWith("SmartForward&") || cmd.startsWith("SmartReply&")) {
int cmdLength = cmd.indexOf('&');
extra = cmd.substring(cmdLength);
cmd = cmd.substring(0, cmdLength);
msg = true;
} else if (cmd.startsWith("SendMail&")) {
msg = true;
}
String us = makeUriString(cmd, extra);
HttpPost method = new HttpPost(URI.create(us));
// Send the proper Content-Type header
// If entity is null (e.g. for attachments), don't set this header
if (msg) {
method.setHeader("Content-Type", "message/rfc822");
} else if (entity != null) {
method.setHeader("Content-Type", "application/vnd.ms-sync.wbxml");
}
setHeaders(method, !cmd.equals(PING_COMMAND));
method.setEntity(entity);
return executePostWithTimeout(client, method, timeout, isPingCommand);
}
protected HttpResponse sendHttpClientOptions() throws IOException {
HttpClient client = getHttpClient(COMMAND_TIMEOUT);
String us = makeUriString("OPTIONS", null);
HttpOptions method = new HttpOptions(URI.create(us));
setHeaders(method, false);
return client.execute(method);
}
String getTargetCollectionClassFromCursor(Cursor c) {
int type = c.getInt(Mailbox.CONTENT_TYPE_COLUMN);
if (type == Mailbox.TYPE_CONTACTS) {
return "Contacts";
} else if (type == Mailbox.TYPE_CALENDAR) {
return "Calendar";
} else {
return "Email";
}
}
/**
* Negotiate provisioning with the server. First, get policies form the server and see if
* the policies are supported by the device. Then, write the policies to the account and
* tell SecurityPolicy that we have policies in effect. Finally, see if those policies are
* active; if so, acknowledge the policies to the server and get a final policy key that we
* use in future EAS commands and write this key to the account.
* @return whether or not provisioning has been successful
* @throws IOException
*/
private boolean tryProvision() throws IOException {
// First, see if provisioning is even possible, i.e. do we support the policies required
// by the server
ProvisionParser pp = canProvision();
if (pp != null) {
SecurityPolicy sp = SecurityPolicy.getInstance(mContext);
// Get the policies from ProvisionParser
PolicySet ps = pp.getPolicySet();
// Update the account with a null policyKey (the key we've gotten is
// temporary and cannot be used for syncing)
if (ps.writeAccount(mAccount, null, true, mContext)) {
sp.updatePolicies(mAccount.mId);
}
if (pp.getRemoteWipe()) {
// We've gotten a remote wipe command
// If we're not the admin, we can't do the wipe, so just return
if (!sp.isActiveAdmin()) return false;
// First, we've got to acknowledge it, but wrap the wipe in try/catch so that
// we wipe the device regardless of any errors in acknowledgment
try {
acknowledgeRemoteWipe(pp.getPolicyKey());
} catch (Exception e) {
// Because remote wipe is such a high priority task, we don't want to
// circumvent it if there's an exception in acknowledgment
}
// Then, tell SecurityPolicy to wipe the device
sp.remoteWipe();
return false;
} else if (sp.isActive(ps)) {
// See if the required policies are in force; if they are, acknowledge the policies
// to the server and get the final policy key
String policyKey = acknowledgeProvision(pp.getPolicyKey(), PROVISION_STATUS_OK);
if (policyKey != null) {
// Write the final policy key to the Account and say we've been successful
ps.writeAccount(mAccount, policyKey, true, mContext);
// Release any mailboxes that might be in a security hold
SyncManager.releaseSecurityHold(mAccount);
return true;
}
} else {
// Notify that we are blocked because of policies
sp.policiesRequired(mAccount.mId);
}
}
return false;
}
private String getPolicyType() {
return (mProtocolVersionDouble >=
Eas.SUPPORTED_PROTOCOL_EX2007_DOUBLE) ? EAS_12_POLICY_TYPE : EAS_2_POLICY_TYPE;
}
/**
* Obtain a set of policies from the server and determine whether those policies are supported
* by the device.
* @return the ProvisionParser (holds policies and key) if we receive policies and they are
* supported by the device; null otherwise
* @throws IOException
*/
private ProvisionParser canProvision() throws IOException {
Serializer s = new Serializer();
s.start(Tags.PROVISION_PROVISION).start(Tags.PROVISION_POLICIES);
s.start(Tags.PROVISION_POLICY).data(Tags.PROVISION_POLICY_TYPE, getPolicyType())
.end().end().end().done();
HttpResponse resp = sendHttpClientPost("Provision", s.toByteArray());
int code = resp.getStatusLine().getStatusCode();
if (code == HttpStatus.SC_OK) {
InputStream is = resp.getEntity().getContent();
ProvisionParser pp = new ProvisionParser(is, this);
if (pp.parse()) {
// The PolicySet in the ProvisionParser will have the requirements for all KNOWN
// policies. If others are required, hasSupportablePolicySet will be false
if (pp.hasSupportablePolicySet()) {
// If the policies are supportable (in this context, meaning that there are no
// completely unimplemented policies required), just return the parser itself
return pp;
} else {
// Try to acknowledge using the "partial" status (i.e. we can partially
// accommodate the required policies). The server will agree to this if the
// "allow non-provisionable devices" setting is enabled on the server
String policyKey = acknowledgeProvision(pp.getPolicyKey(),
PROVISION_STATUS_PARTIAL);
// Return either the parser (success) or null (failure)
return (policyKey != null) ? pp : null;
}
}
}
// On failures, simply return null
return null;
}
/**
* Acknowledge that we support the policies provided by the server, and that these policies
* are in force.
* @param tempKey the initial (temporary) policy key sent by the server
* @return the final policy key, which can be used for syncing
* @throws IOException
*/
private void acknowledgeRemoteWipe(String tempKey) throws IOException {
acknowledgeProvisionImpl(tempKey, PROVISION_STATUS_OK, true);
}
private String acknowledgeProvision(String tempKey, String result) throws IOException {
return acknowledgeProvisionImpl(tempKey, result, false);
}
private String acknowledgeProvisionImpl(String tempKey, String status,
boolean remoteWipe) throws IOException {
Serializer s = new Serializer();
s.start(Tags.PROVISION_PROVISION).start(Tags.PROVISION_POLICIES);
s.start(Tags.PROVISION_POLICY);
// Use the proper policy type, depending on EAS version
s.data(Tags.PROVISION_POLICY_TYPE, getPolicyType());
s.data(Tags.PROVISION_POLICY_KEY, tempKey);
s.data(Tags.PROVISION_STATUS, status);
s.end().end(); // PROVISION_POLICY, PROVISION_POLICIES
if (remoteWipe) {
s.start(Tags.PROVISION_REMOTE_WIPE);
s.data(Tags.PROVISION_STATUS, PROVISION_STATUS_OK);
s.end();
}
s.end().done(); // PROVISION_PROVISION
HttpResponse resp = sendHttpClientPost("Provision", s.toByteArray());
int code = resp.getStatusLine().getStatusCode();
if (code == HttpStatus.SC_OK) {
InputStream is = resp.getEntity().getContent();
ProvisionParser pp = new ProvisionParser(is, this);
if (pp.parse()) {
// Return the final policy key from the ProvisionParser
return pp.getPolicyKey();
}
}
// On failures, return null
return null;
}
/**
* Performs FolderSync
*
* @throws IOException
* @throws EasParserException
*/
public void runAccountMailbox() throws IOException, EasParserException {
// Initialize exit status to success
mExitStatus = EmailServiceStatus.SUCCESS;
try {
try {
SyncManager.callback()
.syncMailboxListStatus(mAccount.mId, EmailServiceStatus.IN_PROGRESS, 0);
} catch (RemoteException e1) {
// Don't care if this fails
}
if (mAccount.mSyncKey == null) {
mAccount.mSyncKey = "0";
userLog("Account syncKey INIT to 0");
ContentValues cv = new ContentValues();
cv.put(AccountColumns.SYNC_KEY, mAccount.mSyncKey);
mAccount.update(mContext, cv);
}
boolean firstSync = mAccount.mSyncKey.equals("0");
if (firstSync) {
userLog("Initial FolderSync");
}
// When we first start up, change all mailboxes to push.
ContentValues cv = new ContentValues();
cv.put(Mailbox.SYNC_INTERVAL, Mailbox.CHECK_INTERVAL_PUSH);
if (mContentResolver.update(Mailbox.CONTENT_URI, cv,
WHERE_ACCOUNT_AND_SYNC_INTERVAL_PING,
new String[] {Long.toString(mAccount.mId)}) > 0) {
SyncManager.kick("change ping boxes to push");
}
// Determine our protocol version, if we haven't already and save it in the Account
// Also re-check protocol version at least once a day (in case of upgrade)
if (mAccount.mProtocolVersion == null ||
((System.currentTimeMillis() - mMailbox.mSyncTime) > DAYS)) {
userLog("Determine EAS protocol version");
HttpResponse resp = sendHttpClientOptions();
int code = resp.getStatusLine().getStatusCode();
userLog("OPTIONS response: ", code);
if (code == HttpStatus.SC_OK) {
Header header = resp.getFirstHeader("MS-ASProtocolCommands");
userLog(header.getValue());
header = resp.getFirstHeader("ms-asprotocolversions");
try {
setupProtocolVersion(this, header);
} catch (MessagingException e) {
// Since we've already validated, this can't really happen
// But if it does, we'll rethrow this...
throw new IOException();
}
// Save the protocol version
cv.clear();
// Save the protocol version in the account
cv.put(Account.PROTOCOL_VERSION, mProtocolVersion);
mAccount.update(mContext, cv);
cv.clear();
// Save the sync time of the account mailbox to current time
cv.put(Mailbox.SYNC_TIME, System.currentTimeMillis());
mMailbox.update(mContext, cv);
} else {
errorLog("OPTIONS command failed; throwing IOException");
throw new IOException();
}
}
// Change all pushable boxes to push when we start the account mailbox
if (mAccount.mSyncInterval == Account.CHECK_INTERVAL_PUSH) {
cv.clear();
cv.put(Mailbox.SYNC_INTERVAL, Mailbox.CHECK_INTERVAL_PUSH);
if (mContentResolver.update(Mailbox.CONTENT_URI, cv,
SyncManager.WHERE_IN_ACCOUNT_AND_PUSHABLE,
new String[] {Long.toString(mAccount.mId)}) > 0) {
userLog("Push account; set pushable boxes to push...");
}
}
while (!mStop) {
userLog("Sending Account syncKey: ", mAccount.mSyncKey);
Serializer s = new Serializer();
s.start(Tags.FOLDER_FOLDER_SYNC).start(Tags.FOLDER_SYNC_KEY)
.text(mAccount.mSyncKey).end().end().done();
HttpResponse resp = sendHttpClientPost("FolderSync", s.toByteArray());
if (mStop) break;
int code = resp.getStatusLine().getStatusCode();
if (code == HttpStatus.SC_OK) {
HttpEntity entity = resp.getEntity();
int len = (int)entity.getContentLength();
if (len != 0) {
InputStream is = entity.getContent();
// Returns true if we need to sync again
if (new FolderSyncParser(is, new AccountSyncAdapter(mMailbox, this))
.parse()) {
continue;
}
}
} else if (isProvisionError(code)) {
// If the sync error is a provisioning failure (perhaps the policies changed),
// let's try the provisioning procedure
// Provisioning must only be attempted for the account mailbox - trying to
// provision any other mailbox may result in race conditions and the creation
// of multiple policy keys.
if (!tryProvision()) {
// Set the appropriate failure status
mExitStatus = EXIT_SECURITY_FAILURE;
return;
} else {
// If we succeeded, try again...
continue;
}
} else if (isAuthError(code)) {
mExitStatus = EXIT_LOGIN_FAILURE;
return;
} else {
userLog("FolderSync response error: ", code);
}
// Change all push/hold boxes to push
cv.clear();
cv.put(Mailbox.SYNC_INTERVAL, Account.CHECK_INTERVAL_PUSH);
if (mContentResolver.update(Mailbox.CONTENT_URI, cv,
WHERE_PUSH_HOLD_NOT_ACCOUNT_MAILBOX,
new String[] {Long.toString(mAccount.mId)}) > 0) {
userLog("Set push/hold boxes to push...");
}
try {
SyncManager.callback()
.syncMailboxListStatus(mAccount.mId, mExitStatus, 0);
} catch (RemoteException e1) {
// Don't care if this fails
}
// Before each run of the pingLoop, if this Account has a PolicySet, make sure it's
// active; otherwise, clear out the key/flag. This should cause a provisioning
// error on the next POST, and start the security sequence over again
String key = mAccount.mSecuritySyncKey;
if (!TextUtils.isEmpty(key)) {
PolicySet ps = new PolicySet(mAccount);
SecurityPolicy sp = SecurityPolicy.getInstance(mContext);
if (!sp.isActive(ps)) {
cv.clear();
cv.put(AccountColumns.SECURITY_FLAGS, 0);
cv.putNull(AccountColumns.SECURITY_SYNC_KEY);
long accountId = mAccount.mId;
mContentResolver.update(ContentUris.withAppendedId(
Account.CONTENT_URI, accountId), cv, null, null);
sp.policiesRequired(accountId);
}
}
// Wait for push notifications.
String threadName = Thread.currentThread().getName();
try {
runPingLoop();
} catch (StaleFolderListException e) {
// We break out if we get told about a stale folder list
userLog("Ping interrupted; folder list requires sync...");
} catch (IllegalHeartbeatException e) {
// If we're sending an illegal heartbeat, reset either the min or the max to
// that heartbeat
resetHeartbeats(e.mLegalHeartbeat);
} finally {
Thread.currentThread().setName(threadName);
}
}
} catch (IOException e) {
// We catch this here to send the folder sync status callback
// A folder sync failed callback will get sent from run()
try {
if (!mStop) {
SyncManager.callback()
.syncMailboxListStatus(mAccount.mId,
EmailServiceStatus.CONNECTION_ERROR, 0);
}
} catch (RemoteException e1) {
// Don't care if this fails
}
throw e;
}
}
/**
* Reset either our minimum or maximum ping heartbeat to a heartbeat known to be legal
* @param legalHeartbeat a known legal heartbeat (from the EAS server)
*/
/*package*/ void resetHeartbeats(int legalHeartbeat) {
userLog("Resetting min/max heartbeat, legal = " + legalHeartbeat);
// We are here because the current heartbeat (mPingHeartbeat) is invalid. Depending on
// whether the argument is above or below the current heartbeat, we can infer the need to
// change either the minimum or maximum heartbeat
if (legalHeartbeat > mPingHeartbeat) {
// The legal heartbeat is higher than the ping heartbeat; therefore, our minimum was
// too low. We respond by raising either or both of the minimum heartbeat or the
// force heartbeat to the argument value
if (mPingMinHeartbeat < legalHeartbeat) {
mPingMinHeartbeat = legalHeartbeat;
}
if (mPingForceHeartbeat < legalHeartbeat) {
mPingForceHeartbeat = legalHeartbeat;
}
// If our minimum is now greater than the max, bring them together
if (mPingMinHeartbeat > mPingMaxHeartbeat) {
mPingMaxHeartbeat = legalHeartbeat;
}
} else if (legalHeartbeat < mPingHeartbeat) {
// The legal heartbeat is lower than the ping heartbeat; therefore, our maximum was
// too high. We respond by lowering the maximum to the argument value
mPingMaxHeartbeat = legalHeartbeat;
// If our maximum is now less than the minimum, bring them together
if (mPingMaxHeartbeat < mPingMinHeartbeat) {
mPingMinHeartbeat = legalHeartbeat;
}
}
// Set current heartbeat to the legal heartbeat
mPingHeartbeat = legalHeartbeat;
// Allow the heartbeat logic to run
mPingHeartbeatDropped = false;
}
private void pushFallback(long mailboxId) {
Mailbox mailbox = Mailbox.restoreMailboxWithId(mContext, mailboxId);
if (mailbox == null) {
return;
}
ContentValues cv = new ContentValues();
int mins = PING_FALLBACK_PIM;
if (mailbox.mType == Mailbox.TYPE_INBOX) {
mins = PING_FALLBACK_INBOX;
}
cv.put(Mailbox.SYNC_INTERVAL, mins);
mContentResolver.update(ContentUris.withAppendedId(Mailbox.CONTENT_URI, mailboxId),
cv, null, null);
errorLog("*** PING ERROR LOOP: Set " + mailbox.mDisplayName + " to " + mins + " min sync");
SyncManager.kick("push fallback");
}
/**
* Simplistic attempt to determine a NAT timeout, based on experience with various carriers
* and networks. The string "reset by peer" is very common in these situations, so we look for
* that specifically. We may add additional tests here as more is learned.
* @param message
* @return whether this message is likely associated with a NAT failure
*/
private boolean isLikelyNatFailure(String message) {
if (message == null) return false;
if (message.contains("reset by peer")) {
return true;
}
return false;
}
private void runPingLoop() throws IOException, StaleFolderListException,
IllegalHeartbeatException {
int pingHeartbeat = mPingHeartbeat;
userLog("runPingLoop");
// Do push for all sync services here
long endTime = System.currentTimeMillis() + (30*MINUTES);
HashMap<String, Integer> pingErrorMap = new HashMap<String, Integer>();
ArrayList<String> readyMailboxes = new ArrayList<String>();
ArrayList<String> notReadyMailboxes = new ArrayList<String>();
int pingWaitCount = 0;
while ((System.currentTimeMillis() < endTime) && !mStop) {
// Count of pushable mailboxes
int pushCount = 0;
// Count of mailboxes that can be pushed right now
int canPushCount = 0;
// Count of uninitialized boxes
int uninitCount = 0;
Serializer s = new Serializer();
Cursor c = mContentResolver.query(Mailbox.CONTENT_URI, Mailbox.CONTENT_PROJECTION,
MailboxColumns.ACCOUNT_KEY + '=' + mAccount.mId +
AND_FREQUENCY_PING_PUSH_AND_NOT_ACCOUNT_MAILBOX, null, null);
notReadyMailboxes.clear();
readyMailboxes.clear();
try {
// Loop through our pushed boxes seeing what is available to push
while (c.moveToNext()) {
pushCount++;
// Two requirements for push:
// 1) SyncManager tells us the mailbox is syncable (not running, not stopped)
// 2) The syncKey isn't "0" (i.e. it's synced at least once)
long mailboxId = c.getLong(Mailbox.CONTENT_ID_COLUMN);
int pingStatus = SyncManager.pingStatus(mailboxId);
String mailboxName = c.getString(Mailbox.CONTENT_DISPLAY_NAME_COLUMN);
if (pingStatus == SyncManager.PING_STATUS_OK) {
String syncKey = c.getString(Mailbox.CONTENT_SYNC_KEY_COLUMN);
if ((syncKey == null) || syncKey.equals("0")) {
// We can't push until the initial sync is done
pushCount--;
uninitCount++;
continue;
}
if (canPushCount++ == 0) {
// Initialize the Ping command
s.start(Tags.PING_PING)
.data(Tags.PING_HEARTBEAT_INTERVAL,
Integer.toString(pingHeartbeat))
.start(Tags.PING_FOLDERS);
}
String folderClass = getTargetCollectionClassFromCursor(c);
s.start(Tags.PING_FOLDER)
.data(Tags.PING_ID, c.getString(Mailbox.CONTENT_SERVER_ID_COLUMN))
.data(Tags.PING_CLASS, folderClass)
.end();
readyMailboxes.add(mailboxName);
} else if ((pingStatus == SyncManager.PING_STATUS_RUNNING) ||
(pingStatus == SyncManager.PING_STATUS_WAITING)) {
notReadyMailboxes.add(mailboxName);
} else if (pingStatus == SyncManager.PING_STATUS_UNABLE) {
pushCount--;
userLog(mailboxName, " in error state; ignore");
continue;
}
}
} finally {
c.close();
}
if (Eas.USER_LOG) {
if (!notReadyMailboxes.isEmpty()) {
userLog("Ping not ready for: " + notReadyMailboxes);
}
if (!readyMailboxes.isEmpty()) {
userLog("Ping ready for: " + readyMailboxes);
}
}
// If we've waited 10 seconds or more, just ping with whatever boxes are ready
// But use a shorter than normal heartbeat
boolean forcePing = !notReadyMailboxes.isEmpty() && (pingWaitCount > 5);
if ((canPushCount > 0) && ((canPushCount == pushCount) || forcePing)) {
// If all pingable boxes are ready for push, send Ping to the server
s.end().end().done();
pingWaitCount = 0;
mPostReset = false;
mPostAborted = false;
// If we've been stopped, this is a good time to return
if (mStop) return;
long pingTime = SystemClock.elapsedRealtime();
try {
// Send the ping, wrapped by appropriate timeout/alarm
if (forcePing) {
userLog("Forcing ping after waiting for all boxes to be ready");
}
HttpResponse res =
sendPing(s.toByteArray(), forcePing ? mPingForceHeartbeat : pingHeartbeat);
int code = res.getStatusLine().getStatusCode();
userLog("Ping response: ", code);
// Return immediately if we've been asked to stop during the ping
if (mStop) {
userLog("Stopping pingLoop");
return;
}
if (code == HttpStatus.SC_OK) {
// Make sure to clear out any pending sync errors
SyncManager.removeFromSyncErrorMap(mMailboxId);
HttpEntity e = res.getEntity();
int len = (int)e.getContentLength();
InputStream is = res.getEntity().getContent();
if (len != 0) {
int pingResult = parsePingResult(is, mContentResolver, pingErrorMap);
// If our ping completed (status = 1), and we weren't forced and we're
// not at the maximum, try increasing timeout by two minutes
if (pingResult == PROTOCOL_PING_STATUS_COMPLETED && !forcePing) {
if (pingHeartbeat > mPingHighWaterMark) {
mPingHighWaterMark = pingHeartbeat;
userLog("Setting high water mark at: ", mPingHighWaterMark);
}
if ((pingHeartbeat < mPingMaxHeartbeat) &&
!mPingHeartbeatDropped) {
pingHeartbeat += PING_HEARTBEAT_INCREMENT;
if (pingHeartbeat > mPingMaxHeartbeat) {
pingHeartbeat = mPingMaxHeartbeat;
}
userLog("Increasing ping heartbeat to ", pingHeartbeat, "s");
}
}
} else {
userLog("Ping returned empty result; throwing IOException");
throw new IOException();
}
} else if (isAuthError(code)) {
mExitStatus = EXIT_LOGIN_FAILURE;
userLog("Authorization error during Ping: ", code);
throw new IOException();
}
} catch (IOException e) {
String message = e.getMessage();
// If we get the exception that is indicative of a NAT timeout and if we
// haven't yet "fixed" the timeout, back off by two minutes and "fix" it
boolean hasMessage = message != null;
userLog("IOException runPingLoop: " + (hasMessage ? message : "[no message]"));
if (mPostReset) {
// Nothing to do in this case; this is SyncManager telling us to try another
// ping.
} else if (mPostAborted || isLikelyNatFailure(message)) {
long pingLength = SystemClock.elapsedRealtime() - pingTime;
if ((pingHeartbeat > mPingMinHeartbeat) &&
(pingHeartbeat > mPingHighWaterMark)) {
pingHeartbeat -= PING_HEARTBEAT_INCREMENT;
mPingHeartbeatDropped = true;
if (pingHeartbeat < mPingMinHeartbeat) {
pingHeartbeat = mPingMinHeartbeat;
}
userLog("Decreased ping heartbeat to ", pingHeartbeat, "s");
} else if (mPostAborted) {
// There's no point in throwing here; this can happen in two cases
// 1) An alarm, which indicates minutes without activity; no sense
// backing off
// 2) SyncManager abort, due to sync of mailbox. Again, we want to
// keep on trying to ping
userLog("Ping aborted; retry");
} else if (pingLength < 2000) {
userLog("Abort or NAT type return < 2 seconds; throwing IOException");
throw e;
} else {
userLog("NAT type IOException");
}
} else if (hasMessage && message.contains("roken pipe")) {
// The "broken pipe" error (uppercase or lowercase "b") seems to be an
// internal error, so let's not throw an exception (which leads to delays)
// but rather simply run through the loop again
} else {
throw e;
}
}
} else if (forcePing) {
// In this case, there aren't any boxes that are pingable, but there are boxes
// waiting (for IOExceptions)
userLog("pingLoop waiting 60s for any pingable boxes");
sleep(60*SECONDS, true);
} else if (pushCount > 0) {
// If we want to Ping, but can't just yet, wait a little bit
// TODO Change sleep to wait and use notify from SyncManager when a sync ends
sleep(2*SECONDS, false);
pingWaitCount++;
//userLog("pingLoop waited 2s for: ", (pushCount - canPushCount), " box(es)");
} else if (uninitCount > 0) {
// In this case, we're doing an initial sync of at least one mailbox. Since this
// is typically a one-time case, I'm ok with trying again every 10 seconds until
// we're in one of the other possible states.
userLog("pingLoop waiting for initial sync of ", uninitCount, " box(es)");
sleep(10*SECONDS, true);
} else {
// We've got nothing to do, so we'll check again in 30 minutes at which time
// we'll update the folder list. Let the device sleep in the meantime...
userLog("pingLoop sleeping for 30m");
sleep(30*MINUTES, true);
}
}
// Save away the current heartbeat
mPingHeartbeat = pingHeartbeat;
}
private void sleep(long ms, boolean runAsleep) {
if (runAsleep) {
SyncManager.runAsleep(mMailboxId, ms+(5*SECONDS));
}
try {
Thread.sleep(ms);
} catch (InterruptedException e) {
// Doesn't matter whether we stop early; it's the thought that counts
} finally {
if (runAsleep) {
SyncManager.runAwake(mMailboxId);
}
}
}
private int parsePingResult(InputStream is, ContentResolver cr,
HashMap<String, Integer> errorMap)
throws IOException, StaleFolderListException, IllegalHeartbeatException {
PingParser pp = new PingParser(is, this);
if (pp.parse()) {
// True indicates some mailboxes need syncing...
// syncList has the serverId's of the mailboxes...
mBindArguments[0] = Long.toString(mAccount.mId);
mPingChangeList = pp.getSyncList();
for (String serverId: mPingChangeList) {
mBindArguments[1] = serverId;
Cursor c = cr.query(Mailbox.CONTENT_URI, Mailbox.CONTENT_PROJECTION,
WHERE_ACCOUNT_KEY_AND_SERVER_ID, mBindArguments, null);
try {
if (c.moveToFirst()) {
/**
* Check the boxes reporting changes to see if there really were any...
* We do this because bugs in various Exchange servers can put us into a
* looping behavior by continually reporting changes in a mailbox, even when
* there aren't any.
*
* This behavior is seemingly random, and therefore we must code defensively
* by backing off of push behavior when it is detected.
*
* One known cause, on certain Exchange 2003 servers, is acknowledged by
* Microsoft, and the server hotfix for this case can be found at
* http://support.microsoft.com/kb/923282
*/
// Check the status of the last sync
String status = c.getString(Mailbox.CONTENT_SYNC_STATUS_COLUMN);
int type = SyncManager.getStatusType(status);
// This check should always be true...
if (type == SyncManager.SYNC_PING) {
int changeCount = SyncManager.getStatusChangeCount(status);
if (changeCount > 0) {
errorMap.remove(serverId);
} else if (changeCount == 0) {
// This means that a ping reported changes in error; we keep a count
// of consecutive errors of this kind
String name = c.getString(Mailbox.CONTENT_DISPLAY_NAME_COLUMN);
Integer failures = errorMap.get(serverId);
if (failures == null) {
userLog("Last ping reported changes in error for: ", name);
errorMap.put(serverId, 1);
} else if (failures > MAX_PING_FAILURES) {
// We'll back off of push for this box
pushFallback(c.getLong(Mailbox.CONTENT_ID_COLUMN));
continue;
} else {
userLog("Last ping reported changes in error for: ", name);
errorMap.put(serverId, failures + 1);
}
}
}
// If there were no problems with previous sync, we'll start another one
SyncManager.startManualSync(c.getLong(Mailbox.CONTENT_ID_COLUMN),
SyncManager.SYNC_PING, null);
}
} finally {
c.close();
}
}
}
return pp.getSyncStatus();
}
private String getEmailFilter() {
String filter = Eas.FILTER_1_WEEK;
switch (mAccount.mSyncLookback) {
case com.android.email.Account.SYNC_WINDOW_1_DAY: {
filter = Eas.FILTER_1_DAY;
break;
}
case com.android.email.Account.SYNC_WINDOW_3_DAYS: {
filter = Eas.FILTER_3_DAYS;
break;
}
case com.android.email.Account.SYNC_WINDOW_1_WEEK: {
filter = Eas.FILTER_1_WEEK;
break;
}
case com.android.email.Account.SYNC_WINDOW_2_WEEKS: {
filter = Eas.FILTER_2_WEEKS;
break;
}
case com.android.email.Account.SYNC_WINDOW_1_MONTH: {
filter = Eas.FILTER_1_MONTH;
break;
}
case com.android.email.Account.SYNC_WINDOW_ALL: {
filter = Eas.FILTER_ALL;
break;
}
}
return filter;
}
/**
* Common code to sync E+PIM data
*
* @param target, an EasMailbox, EasContacts, or EasCalendar object
*/
public void sync(AbstractSyncAdapter target) throws IOException {
Mailbox mailbox = target.mMailbox;
boolean moreAvailable = true;
int loopingCount = 0;
while (!mStop && moreAvailable) {
// If we have no connectivity, just exit cleanly. SyncManager will start us up again
// when connectivity has returned
if (!hasConnectivity()) {
userLog("No connectivity in sync; finishing sync");
mExitStatus = EXIT_DONE;
return;
}
// Every time through the loop we check to see if we're still syncable
if (!target.isSyncable()) {
mExitStatus = EXIT_DONE;
return;
}
// Now, handle various requests
while (true) {
Request req = null;
synchronized (mRequests) {
if (mRequests.isEmpty()) {
break;
} else {
req = mRequests.get(0);
}
}
// Our two request types are PartRequest (loading attachment) and
// MeetingResponseRequest (respond to a meeting request)
if (req instanceof PartRequest) {
getAttachment((PartRequest)req);
} else if (req instanceof MeetingResponseRequest) {
sendMeetingResponse((MeetingResponseRequest)req);
}
// If there's an exception handling the request, we'll throw it
// Otherwise, we remove the request
synchronized(mRequests) {
mRequests.remove(req);
}
}
Serializer s = new Serializer();
String className = target.getCollectionName();
String syncKey = target.getSyncKey();
userLog("sync, sending ", className, " syncKey: ", syncKey);
s.start(Tags.SYNC_SYNC)
.start(Tags.SYNC_COLLECTIONS)
.start(Tags.SYNC_COLLECTION)
.data(Tags.SYNC_CLASS, className)
.data(Tags.SYNC_SYNC_KEY, syncKey)
.data(Tags.SYNC_COLLECTION_ID, mailbox.mServerId);
// Start with the default timeout
int timeout = COMMAND_TIMEOUT;
if (!syncKey.equals("0")) {
// EAS doesn't allow GetChanges in an initial sync; sending other options
// appears to cause the server to delay its response in some cases, and this delay
// can be long enough to result in an IOException and total failure to sync.
// Therefore, we don't send any options with the initial sync.
s.tag(Tags.SYNC_DELETES_AS_MOVES);
s.tag(Tags.SYNC_GET_CHANGES);
s.data(Tags.SYNC_WINDOW_SIZE,
className.equals("Email") ? EMAIL_WINDOW_SIZE : PIM_WINDOW_SIZE);
// Handle options
s.start(Tags.SYNC_OPTIONS);
// Set the lookback appropriately (EAS calls this a "filter") for all but Contacts
if (className.equals("Email")) {
s.data(Tags.SYNC_FILTER_TYPE, getEmailFilter());
} else if (className.equals("Calendar")) {
// TODO Force two weeks for calendar until we can set this!
s.data(Tags.SYNC_FILTER_TYPE, Eas.FILTER_2_WEEKS);
}
// Set the truncation amount for all classes
if (mProtocolVersionDouble >= Eas.SUPPORTED_PROTOCOL_EX2007_DOUBLE) {
s.start(Tags.BASE_BODY_PREFERENCE)
// HTML for email; plain text for everything else
.data(Tags.BASE_TYPE, (className.equals("Email") ? Eas.BODY_PREFERENCE_HTML
: Eas.BODY_PREFERENCE_TEXT))
.data(Tags.BASE_TRUNCATION_SIZE, Eas.EAS12_TRUNCATION_SIZE)
.end();
} else {
s.data(Tags.SYNC_TRUNCATION, Eas.EAS2_5_TRUNCATION_SIZE);
}
s.end();
} else {
// Use enormous timeout for initial sync, which empirically can take a while longer
timeout = 120*SECONDS;
}
// Send our changes up to the server
target.sendLocalChanges(s);
s.end().end().end().done();
HttpResponse resp = sendHttpClientPost("Sync", new ByteArrayEntity(s.toByteArray()),
timeout);
int code = resp.getStatusLine().getStatusCode();
if (code == HttpStatus.SC_OK) {
InputStream is = resp.getEntity().getContent();
if (is != null) {
moreAvailable = target.parse(is);
if (target.isLooping()) {
loopingCount++;
userLog("** Looping: " + loopingCount);
// After the maximum number of loops, we'll set moreAvailable to false and
// allow the sync loop to terminate
if (moreAvailable && (loopingCount > MAX_LOOPING_COUNT)) {
userLog("** Looping force stopped");
moreAvailable = false;
}
} else {
loopingCount = 0;
}
target.cleanup();
} else {
userLog("Empty input stream in sync command response");
}
} else {
userLog("Sync response error: ", code);
if (isProvisionError(code)) {
mExitStatus = EXIT_SECURITY_FAILURE;
} else if (isAuthError(code)) {
mExitStatus = EXIT_LOGIN_FAILURE;
} else {
mExitStatus = EXIT_IO_ERROR;
}
return;
}
}
mExitStatus = EXIT_DONE;
}
protected boolean setupService() {
// Make sure account and mailbox are always the latest from the database
mAccount = Account.restoreAccountWithId(mContext, mAccount.mId);
if (mAccount == null) return false;
mMailbox = Mailbox.restoreMailboxWithId(mContext, mMailbox.mId);
if (mMailbox == null) return false;
mThread = Thread.currentThread();
android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_BACKGROUND);
TAG = mThread.getName();
HostAuth ha = HostAuth.restoreHostAuthWithId(mContext, mAccount.mHostAuthKeyRecv);
if (ha == null) return false;
mHostAddress = ha.mAddress;
mUserName = ha.mLogin;
mPassword = ha.mPassword;
// Set up our protocol version from the Account
mProtocolVersion = mAccount.mProtocolVersion;
// If it hasn't been set up, start with default version
if (mProtocolVersion == null) {
mProtocolVersion = Eas.DEFAULT_PROTOCOL_VERSION;
}
mProtocolVersionDouble = Double.parseDouble(mProtocolVersion);
return true;
}
/* (non-Javadoc)
* @see java.lang.Runnable#run()
*/
public void run() {
if (!setupService()) return;
try {
SyncManager.callback().syncMailboxStatus(mMailboxId, EmailServiceStatus.IN_PROGRESS, 0);
} catch (RemoteException e1) {
// Don't care if this fails
}
// Whether or not we're the account mailbox
try {
mDeviceId = SyncManager.getDeviceId();
if ((mMailbox == null) || (mAccount == null)) {
return;
} else if (mMailbox.mType == Mailbox.TYPE_EAS_ACCOUNT_MAILBOX) {
runAccountMailbox();
} else {
AbstractSyncAdapter target;
if (mMailbox.mType == Mailbox.TYPE_CONTACTS) {
target = new ContactsSyncAdapter(mMailbox, this);
} else if (mMailbox.mType == Mailbox.TYPE_CALENDAR) {
target = new CalendarSyncAdapter(mMailbox, this);
} else {
target = new EmailSyncAdapter(mMailbox, this);
}
// We loop here because someone might have put a request in while we were syncing
// and we've missed that opportunity...
do {
if (mRequestTime != 0) {
userLog("Looping for user request...");
mRequestTime = 0;
}
sync(target);
} while (mRequestTime != 0);
}
} catch (EasAuthenticationException e) {
userLog("Caught authentication error");
mExitStatus = EXIT_LOGIN_FAILURE;
} catch (IOException e) {
String message = e.getMessage();
userLog("Caught IOException: ", (message == null) ? "No message" : message);
mExitStatus = EXIT_IO_ERROR;
} catch (Exception e) {
userLog("Uncaught exception in EasSyncService", e);
} finally {
int status;
if (!mStop) {
userLog("Sync finished");
SyncManager.done(this);
switch (mExitStatus) {
case EXIT_IO_ERROR:
status = EmailServiceStatus.CONNECTION_ERROR;
break;
case EXIT_DONE:
status = EmailServiceStatus.SUCCESS;
ContentValues cv = new ContentValues();
cv.put(Mailbox.SYNC_TIME, System.currentTimeMillis());
String s = "S" + mSyncReason + ':' + status + ':' + mChangeCount;
cv.put(Mailbox.SYNC_STATUS, s);
mContentResolver.update(ContentUris.withAppendedId(Mailbox.CONTENT_URI,
mMailboxId), cv, null, null);
break;
case EXIT_LOGIN_FAILURE:
status = EmailServiceStatus.LOGIN_FAILED;
break;
case EXIT_SECURITY_FAILURE:
status = EmailServiceStatus.SECURITY_FAILURE;
// Ask for a new folder list. This should wake up the account mailbox; a
// security error in account mailbox should start the provisioning process
SyncManager.reloadFolderList(mContext, mAccount.mId, true);
break;
default:
status = EmailServiceStatus.REMOTE_EXCEPTION;
errorLog("Sync ended due to an exception.");
break;
}
} else {
userLog("Stopped sync finished.");
status = EmailServiceStatus.SUCCESS;
}
try {
SyncManager.callback().syncMailboxStatus(mMailboxId, status, 0);
} catch (RemoteException e1) {
// Don't care if this fails
}
// Make sure SyncManager knows about this
SyncManager.kick("sync finished");
}
}
}