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k-9/k9mail-library/src/main/java/com/fsck/k9/mail/store/webdav/WebDavStore.java

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package com.fsck.k9.mail.store.webdav;
import android.util.Log;
import com.fsck.k9.mail.*;
import com.fsck.k9.mail.filter.Base64;
import com.fsck.k9.mail.filter.EOLConvertingOutputStream;
import com.fsck.k9.mail.internet.MimeMessage;
import com.fsck.k9.mail.MessageRetrievalListener;
import com.fsck.k9.mail.CertificateValidationException;
import com.fsck.k9.mail.store.RemoteStore;
import com.fsck.k9.mail.store.StoreConfig;
import org.apache.commons.io.IOUtils;
import org.apache.http.*;
import org.apache.http.client.CookieStore;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.protocol.ClientContext;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import javax.net.ssl.SSLException;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import java.io.*;
import java.net.URI;
import java.net.URISyntaxException;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.zip.GZIPInputStream;
import static com.fsck.k9.mail.K9MailLib.DEBUG_PROTOCOL_WEBDAV;
import static com.fsck.k9.mail.K9MailLib.LOG_TAG;
/**
* <pre>
* Uses WebDAV formatted HTTP calls to an MS Exchange server to fetch email
* and email information.
* </pre>
*/
public class WebDavStore extends RemoteStore {
public static final String STORE_TYPE = "WebDAV";
// Authentication types
private static final short AUTH_TYPE_NONE = 0;
private static final short AUTH_TYPE_BASIC = 1;
private static final short AUTH_TYPE_FORM_BASED = 2;
private static final String[] EMPTY_STRING_ARRAY = new String[0];
// These are the ids used from Exchange server to identify the special folders
// http://social.technet.microsoft.com/Forums/en/exchangesvrdevelopment/thread/1cd2e98c-8a12-44bd-a3e3-9c5ee9e4e14d
private static final String DAV_MAIL_INBOX_FOLDER = "inbox";
private static final String DAV_MAIL_DRAFTS_FOLDER = "drafts";
private static final String DAV_MAIL_SPAM_FOLDER = "junkemail";
private static final String DAV_MAIL_SEND_FOLDER = "##DavMailSubmissionURI##";
private static final String DAV_MAIL_TRASH_FOLDER = "deleteditems";
private static final String DAV_MAIL_OUTBOX_FOLDER = "outbox";
private static final String DAV_MAIL_SENT_FOLDER = "sentitems";
/**
* Decodes a WebDavStore URI.
*
* <p>Possible forms:</p>
* <pre>
* webdav://user:password@server:port ConnectionSecurity.NONE
* webdav+ssl+://user:password@server:port ConnectionSecurity.SSL_TLS_REQUIRED
* </pre>
*/
public static WebDavStoreSettings decodeUri(String uri) {
String host;
int port;
ConnectionSecurity connectionSecurity;
String username = null;
String password = null;
String alias = null;
String path = null;
String authPath = null;
String mailboxPath = null;
URI webDavUri;
try {
webDavUri = new URI(uri);
} catch (URISyntaxException use) {
throw new IllegalArgumentException("Invalid WebDavStore URI", use);
}
String scheme = webDavUri.getScheme();
/*
* Currently available schemes are:
* webdav
* webdav+ssl+
*
* The following are obsolete schemes that may be found in pre-existing
* settings from earlier versions or that may be found when imported. We
* continue to recognize them and re-map them appropriately:
* webdav+tls
* webdav+tls+
* webdav+ssl
*/
if (scheme.equals("webdav")) {
connectionSecurity = ConnectionSecurity.NONE;
} else if (scheme.startsWith("webdav+")) {
connectionSecurity = ConnectionSecurity.SSL_TLS_REQUIRED;
} else {
throw new IllegalArgumentException("Unsupported protocol (" + scheme + ")");
}
host = webDavUri.getHost();
if (host.startsWith("http")) {
String[] hostParts = host.split("://", 2);
if (hostParts.length > 1) {
host = hostParts[1];
}
}
port = webDavUri.getPort();
String userInfo = webDavUri.getUserInfo();
if (userInfo != null) {
String[] userInfoParts = userInfo.split(":");
username = decodeUtf8(userInfoParts[0]);
String userParts[] = username.split("\\\\", 2);
if (userParts.length > 1) {
alias = userParts[1];
} else {
alias = username;
}
if (userInfoParts.length > 1) {
password = decodeUtf8(userInfoParts[1]);
}
}
String[] pathParts = webDavUri.getPath().split("\\|");
for (int i = 0, count = pathParts.length; i < count; i++) {
if (i == 0) {
if (pathParts[0] != null &&
pathParts[0].length() > 1) {
path = pathParts[0];
}
} else if (i == 1) {
if (pathParts[1] != null &&
pathParts[1].length() > 1) {
authPath = pathParts[1];
}
} else if (i == 2) {
if (pathParts[2] != null &&
pathParts[2].length() > 1) {
mailboxPath = pathParts[2];
}
}
}
return new WebDavStoreSettings(host, port, connectionSecurity, null, username, password,
null, alias, path, authPath, mailboxPath);
}
/**
* Creates a WebDavStore URI with the supplied settings.
*
* @param server
* The {@link ServerSettings} object that holds the server settings.
*
* @return A WebDavStore URI that holds the same information as the {@code server} parameter.
*
* @see StoreConfig#getStoreUri()
* @see WebDavStore#decodeUri(String)
*/
public static String createUri(ServerSettings server) {
String userEnc = encodeUtf8(server.username);
String passwordEnc = (server.password != null) ?
encodeUtf8(server.password) : "";
String scheme;
switch (server.connectionSecurity) {
case SSL_TLS_REQUIRED:
scheme = "webdav+ssl+";
break;
default:
case NONE:
scheme = "webdav";
break;
}
String userInfo = userEnc + ":" + passwordEnc;
String uriPath;
Map<String, String> extra = server.getExtra();
if (extra != null) {
String path = extra.get(WebDavStoreSettings.PATH_KEY);
path = (path != null) ? path : "";
String authPath = extra.get(WebDavStoreSettings.AUTH_PATH_KEY);
authPath = (authPath != null) ? authPath : "";
String mailboxPath = extra.get(WebDavStoreSettings.MAILBOX_PATH_KEY);
mailboxPath = (mailboxPath != null) ? mailboxPath : "";
uriPath = "/" + path + "|" + authPath + "|" + mailboxPath;
} else {
uriPath = "/||";
}
try {
return new URI(scheme, userInfo, server.host, server.port, uriPath,
null, null).toString();
} catch (URISyntaxException e) {
throw new IllegalArgumentException("Can't create WebDavStore URI", e);
}
}
/**
* This class is used to store the decoded contents of an WebDavStore URI.
*
* @see WebDavStore#decodeUri(String)
*/
public static class WebDavStoreSettings extends ServerSettings {
public static final String ALIAS_KEY = "alias";
public static final String PATH_KEY = "path";
public static final String AUTH_PATH_KEY = "authPath";
public static final String MAILBOX_PATH_KEY = "mailboxPath";
public final String alias;
public final String path;
public final String authPath;
public final String mailboxPath;
protected WebDavStoreSettings(String host, int port, ConnectionSecurity connectionSecurity,
AuthType authenticationType, String username, String password, String clientCertificateAlias, String alias,
String path, String authPath, String mailboxPath) {
super(STORE_TYPE, host, port, connectionSecurity, authenticationType, username,
password, clientCertificateAlias);
this.alias = alias;
this.path = path;
this.authPath = authPath;
this.mailboxPath = mailboxPath;
}
@Override
public Map<String, String> getExtra() {
Map<String, String> extra = new HashMap<String, String>();
putIfNotNull(extra, ALIAS_KEY, alias);
putIfNotNull(extra, PATH_KEY, path);
putIfNotNull(extra, AUTH_PATH_KEY, authPath);
putIfNotNull(extra, MAILBOX_PATH_KEY, mailboxPath);
return extra;
}
@Override
public ServerSettings newPassword(String newPassword) {
return new WebDavStoreSettings(host, port, connectionSecurity, authenticationType,
username, newPassword, clientCertificateAlias, alias, path, authPath, mailboxPath);
}
}
private ConnectionSecurity mConnectionSecurity;
private String mUsername; /* Stores the username for authentications */
private String mAlias; /* Stores the alias for the user's mailbox */
private String mPassword; /* Stores the password for authentications */
private String mUrl; /* Stores the base URL for the server */
private String mHost; /* Stores the host name for the server */
private int mPort;
private String mPath; /* Stores the path for the server */
private String mAuthPath; /* Stores the path off of the server to post data to for form based authentication */
private String mMailboxPath; /* Stores the user specified path to the mailbox */
private WebDavHttpClient mHttpClient = null;
private HttpContext mContext = null;
private String mAuthString;
private CookieStore mAuthCookies = null;
private short mAuthentication = AUTH_TYPE_NONE;
private String mCachedLoginUrl;
private Folder mSendFolder = null;
private Map<String, WebDavFolder> mFolderList = new HashMap<String, WebDavFolder>();
public WebDavStore(StoreConfig storeConfig) throws MessagingException {
super(storeConfig, null);
WebDavStoreSettings settings;
try {
settings = decodeUri(storeConfig.getStoreUri());
} catch (IllegalArgumentException e) {
throw new MessagingException("Error while decoding store URI", e);
}
mHost = settings.host;
mPort = settings.port;
mConnectionSecurity = settings.connectionSecurity;
mUsername = settings.username;
mPassword = settings.password;
mAlias = settings.alias;
mPath = settings.path;
mAuthPath = settings.authPath;
mMailboxPath = settings.mailboxPath;
if (mPath == null || mPath.equals("")) {
mPath = "/Exchange";
} else if (!mPath.startsWith("/")) {
mPath = "/" + mPath;
}
if (mMailboxPath == null || mMailboxPath.equals("")) {
mMailboxPath = "/" + mAlias;
} else if (!mMailboxPath.startsWith("/")) {
mMailboxPath = "/" + mMailboxPath;
}
if (mAuthPath != null &&
!mAuthPath.equals("") &&
!mAuthPath.startsWith("/")) {
mAuthPath = "/" + mAuthPath;
}
// The URL typically looks like the following: "https://mail.domain.com/Exchange/alias".
// The inbox path would look like: "https://mail.domain.com/Exchange/alias/Inbox".
mUrl = getRoot() + mPath + mMailboxPath;
mAuthString = "Basic " + Base64.encode(mUsername + ":" + mPassword);
}
private String getRoot() {
String root;
if (mConnectionSecurity == ConnectionSecurity.SSL_TLS_REQUIRED) {
root = "https";
} else {
root = "http";
}
root += "://" + mHost + ":" + mPort;
return root;
}
@Override
public void checkSettings() throws MessagingException {
authenticate();
}
@Override
public List <? extends Folder > getPersonalNamespaces(boolean forceListAll) throws MessagingException {
List<Folder> folderList = new LinkedList<Folder>();
/**
* We have to check authentication here so we have the proper URL stored
*/
getHttpClient();
/**
* Firstly we get the "special" folders list (inbox, outbox, etc)
* and setup the account accordingly
*/
Map<String, String> headers = new HashMap<String, String>();
headers.put("Depth", "0");
headers.put("Brief", "t");
DataSet dataset = processRequest(this.mUrl, "PROPFIND", getSpecialFoldersList(), headers);
Map<String, String> specialFoldersMap = dataset.getSpecialFolderToUrl();
String folderName = getFolderName(specialFoldersMap.get(DAV_MAIL_INBOX_FOLDER));
if (folderName != null) {
mStoreConfig.setAutoExpandFolderName(folderName);
mStoreConfig.setInboxFolderName(folderName);
}
folderName = getFolderName(specialFoldersMap.get(DAV_MAIL_DRAFTS_FOLDER));
if (folderName != null)
mStoreConfig.setDraftsFolderName(folderName);
folderName = getFolderName(specialFoldersMap.get(DAV_MAIL_TRASH_FOLDER));
if (folderName != null)
mStoreConfig.setTrashFolderName(folderName);
folderName = getFolderName(specialFoldersMap.get(DAV_MAIL_SPAM_FOLDER));
if (folderName != null)
mStoreConfig.setSpamFolderName(folderName);
// K-9 Mail's outbox is a special local folder and different from Exchange/WebDAV's outbox.
/*
folderName = getFolderName(specialFoldersMap.get(DAV_MAIL_OUTBOX_FOLDER));
if (folderName != null)
mAccount.setOutboxFolderName(folderName);
*/
folderName = getFolderName(specialFoldersMap.get(DAV_MAIL_SENT_FOLDER));
if (folderName != null)
mStoreConfig.setSentFolderName(folderName);
/**
* Next we get all the folders (including "special" ones)
*/
headers = new HashMap<String, String>();
headers.put("Brief", "t");
dataset = processRequest(this.mUrl, "SEARCH", getFolderListXml(), headers);
String[] folderUrls = dataset.getHrefs();
for (String tempUrl : folderUrls) {
WebDavFolder folder = createFolder(tempUrl);
if (folder != null)
folderList.add(folder);
}
return folderList;
}
/**
* Creates a folder using the URL passed as parameter (only if it has not been
* already created) and adds this to our store folder map.
*
* @param folderUrl
* @return
*/
private WebDavFolder createFolder(String folderUrl) {
if (folderUrl == null)
return null;
WebDavFolder wdFolder = null;
String folderName = getFolderName(folderUrl);
if (folderName != null) {
if (!this.mFolderList.containsKey(folderName)) {
wdFolder = new WebDavFolder(this, folderName);
wdFolder.setUrl(folderUrl);
mFolderList.put(folderName, wdFolder);
}
}
// else: Unknown URL format => NO Folder created
return wdFolder;
}
private String getFolderName(String folderUrl) {
if (folderUrl == null)
return null;
// Here we extract the folder name starting from the complete url.
// folderUrl is in the form http://mail.domain.com/exchange/username/foldername
// so we need "foldername" which is the string after the fifth slash
int folderSlash = -1;
for (int j = 0; j < 5; j++) {
folderSlash = folderUrl.indexOf('/', folderSlash + 1);
if (folderSlash < 0)
break;
}
if (folderSlash > 0) {
String fullPathName;
// Removes the final slash if present
if (folderUrl.charAt(folderUrl.length() - 1) == '/')
fullPathName = folderUrl.substring(folderSlash + 1, folderUrl.length() - 1);
else
fullPathName = folderUrl.substring(folderSlash + 1);
// Decodes the url-encoded folder name (i.e. "My%20folder" => "My Folder"
return decodeUtf8(fullPathName);
}
return null;
}
@Override
public Folder getFolder(String name) {
WebDavFolder folder;
if ((folder = this.mFolderList.get(name)) == null) {
folder = new WebDavFolder(this, name);
}
return folder;
}
public Folder getSendSpoolFolder() throws MessagingException {
if (mSendFolder == null)
mSendFolder = getFolder(DAV_MAIL_SEND_FOLDER);
return mSendFolder;
}
@Override
public boolean isMoveCapable() {
return true;
}
@Override
public boolean isCopyCapable() {
return true;
}
private String getSpecialFoldersList() {
StringBuilder builder = new StringBuilder(200);
builder.append("<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>");
builder.append("<propfind xmlns=\"DAV:\">");
builder.append("<prop>");
builder.append("<").append(DAV_MAIL_INBOX_FOLDER).append(" xmlns=\"urn:schemas:httpmail:\"/>");
builder.append("<").append(DAV_MAIL_DRAFTS_FOLDER).append(" xmlns=\"urn:schemas:httpmail:\"/>");
builder.append("<").append(DAV_MAIL_OUTBOX_FOLDER).append(" xmlns=\"urn:schemas:httpmail:\"/>");
builder.append("<").append(DAV_MAIL_SENT_FOLDER).append(" xmlns=\"urn:schemas:httpmail:\"/>");
builder.append("<").append(DAV_MAIL_TRASH_FOLDER).append(" xmlns=\"urn:schemas:httpmail:\"/>");
// This should always be ##DavMailSubmissionURI## for which we already have a constant
// buffer.append("<sendmsg xmlns=\"urn:schemas:httpmail:\"/>");
builder.append("<").append(DAV_MAIL_SPAM_FOLDER).append(" xmlns=\"urn:schemas:httpmail:\"/>");
builder.append("</prop>");
builder.append("</propfind>");
return builder.toString();
}
/***************************************************************
* WebDAV XML Request body retrieval functions
*/
private String getFolderListXml() {
StringBuilder builder = new StringBuilder(200);
builder.append("<?xml version='1.0' ?>");
builder.append("<a:searchrequest xmlns:a='DAV:'><a:sql>\r\n");
builder.append("SELECT \"DAV:uid\", \"DAV:ishidden\"\r\n");
builder.append(" FROM SCOPE('hierarchical traversal of \"").append(this.mUrl).append("\"')\r\n");
builder.append(" WHERE \"DAV:ishidden\"=False AND \"DAV:isfolder\"=True\r\n");
builder.append("</a:sql></a:searchrequest>\r\n");
return builder.toString();
}
private String getMessageCountXml(String messageState) {
StringBuilder builder = new StringBuilder(200);
builder.append("<?xml version='1.0' ?>");
builder.append("<a:searchrequest xmlns:a='DAV:'><a:sql>\r\n");
builder.append("SELECT \"DAV:visiblecount\"\r\n");
builder.append(" FROM \"\"\r\n");
builder.append(" WHERE \"DAV:ishidden\"=False AND \"DAV:isfolder\"=False AND \"urn:schemas:httpmail:read\"=")
.append(messageState).append("\r\n");
builder.append(" GROUP BY \"DAV:ishidden\"\r\n");
builder.append("</a:sql></a:searchrequest>\r\n");
return builder.toString();
}
private String getMessageEnvelopeXml(String[] uids) {
StringBuilder buffer = new StringBuilder(200);
buffer.append("<?xml version='1.0' ?>");
buffer.append("<a:searchrequest xmlns:a='DAV:'><a:sql>\r\n");
buffer.append("SELECT \"DAV:uid\", \"DAV:getcontentlength\",");
buffer.append(" \"urn:schemas:mailheader:mime-version\",");
buffer.append(" \"urn:schemas:mailheader:content-type\",");
buffer.append(" \"urn:schemas:mailheader:subject\",");
buffer.append(" \"urn:schemas:mailheader:date\",");
buffer.append(" \"urn:schemas:mailheader:thread-topic\",");
buffer.append(" \"urn:schemas:mailheader:thread-index\",");
buffer.append(" \"urn:schemas:mailheader:from\",");
buffer.append(" \"urn:schemas:mailheader:to\",");
buffer.append(" \"urn:schemas:mailheader:in-reply-to\",");
buffer.append(" \"urn:schemas:mailheader:cc\",");
buffer.append(" \"urn:schemas:httpmail:read\"");
buffer.append(" \r\n");
buffer.append(" FROM \"\"\r\n");
buffer.append(" WHERE \"DAV:ishidden\"=False AND \"DAV:isfolder\"=False AND ");
for (int i = 0, count = uids.length; i < count; i++) {
if (i != 0) {
buffer.append(" OR ");
}
buffer.append(" \"DAV:uid\"='").append(uids[i]).append("' ");
}
buffer.append("\r\n");
buffer.append("</a:sql></a:searchrequest>\r\n");
return buffer.toString();
}
private String getMessagesXml() {
StringBuilder builder = new StringBuilder(200);
builder.append("<?xml version='1.0' ?>");
builder.append("<a:searchrequest xmlns:a='DAV:'><a:sql>\r\n");
builder.append("SELECT \"DAV:uid\"\r\n");
builder.append(" FROM \"\"\r\n");
builder.append(" WHERE \"DAV:ishidden\"=False AND \"DAV:isfolder\"=False\r\n");
builder.append("</a:sql></a:searchrequest>\r\n");
return builder.toString();
}
private String getMessageUrlsXml(String[] uids) {
StringBuilder buffer = new StringBuilder(600);
buffer.append("<?xml version='1.0' ?>");
buffer.append("<a:searchrequest xmlns:a='DAV:'><a:sql>\r\n");
buffer.append("SELECT \"urn:schemas:httpmail:read\", \"DAV:uid\"\r\n");
buffer.append(" FROM \"\"\r\n");
buffer.append(" WHERE \"DAV:ishidden\"=False AND \"DAV:isfolder\"=False AND ");
for (int i = 0, count = uids.length; i < count; i++) {
if (i != 0) {
buffer.append(" OR ");
}
buffer.append(" \"DAV:uid\"='").append(uids[i]).append("' ");
}
buffer.append("\r\n");
buffer.append("</a:sql></a:searchrequest>\r\n");
return buffer.toString();
}
private String getMessageFlagsXml(String[] uids) throws MessagingException {
if (uids.length == 0) {
throw new MessagingException("Attempt to get flags on 0 length array for uids");
}
StringBuilder buffer = new StringBuilder(200);
buffer.append("<?xml version='1.0' ?>");
buffer.append("<a:searchrequest xmlns:a='DAV:'><a:sql>\r\n");
buffer.append("SELECT \"urn:schemas:httpmail:read\", \"DAV:uid\"\r\n");
buffer.append(" FROM \"\"\r\n");
buffer.append(" WHERE \"DAV:ishidden\"=False AND \"DAV:isfolder\"=False AND ");
for (int i = 0, count = uids.length; i < count; i++) {
if (i != 0) {
buffer.append(" OR ");
}
buffer.append(" \"DAV:uid\"='").append(uids[i]).append("' ");
}
buffer.append("\r\n");
buffer.append("</a:sql></a:searchrequest>\r\n");
return buffer.toString();
}
private String getMarkMessagesReadXml(String[] urls, boolean read) {
StringBuilder buffer = new StringBuilder(600);
buffer.append("<?xml version='1.0' ?>\r\n");
buffer.append("<a:propertyupdate xmlns:a='DAV:' xmlns:b='urn:schemas:httpmail:'>\r\n");
buffer.append("<a:target>\r\n");
for (String url : urls) {
buffer.append(" <a:href>").append(url).append("</a:href>\r\n");
}
buffer.append("</a:target>\r\n");
buffer.append("<a:set>\r\n");
buffer.append(" <a:prop>\r\n");
buffer.append(" <b:read>").append(read ? "1" : "0").append("</b:read>\r\n");
buffer.append(" </a:prop>\r\n");
buffer.append("</a:set>\r\n");
buffer.append("</a:propertyupdate>\r\n");
return buffer.toString();
}
// For flag:
// http://www.devnewsgroups.net/group/microsoft.public.exchange.development/topic27175.aspx
// "<m:0x10900003>1</m:0x10900003>" & _
private String getMoveOrCopyMessagesReadXml(String[] urls, boolean isMove) {
String action = (isMove ? "move" : "copy");
StringBuilder buffer = new StringBuilder(600);
buffer.append("<?xml version='1.0' ?>\r\n");
buffer.append("<a:").append(action).append(" xmlns:a='DAV:' xmlns:b='urn:schemas:httpmail:'>\r\n");
buffer.append("<a:target>\r\n");
for (String url : urls) {
buffer.append(" <a:href>").append(url).append("</a:href>\r\n");
}
buffer.append("</a:target>\r\n");
buffer.append("</a:").append(action).append(">\r\n");
return buffer.toString();
}
/***************************************************************
* Authentication related methods
*/
/**
* Determines which type of authentication Exchange is using and authenticates appropriately.
*
* @throws MessagingException
*/
public boolean authenticate()
throws MessagingException {
try {
if (mAuthentication == AUTH_TYPE_NONE) {
ConnectionInfo info = doInitialConnection();
if (info.requiredAuthType == AUTH_TYPE_BASIC) {
HttpGeneric request = new HttpGeneric(mUrl);
request.setMethod("GET");
request.setHeader("Authorization", mAuthString);
WebDavHttpClient httpClient = new WebDavHttpClient();
HttpResponse response = httpClient.executeOverride(request, mContext);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode >= 200 && statusCode < 300) {
mAuthentication = AUTH_TYPE_BASIC;
} else if (statusCode == 401) {
throw new MessagingException("Invalid username or password for authentication.");
} else {
throw new MessagingException("Error with code " + response.getStatusLine().getStatusCode() +
" during request processing: " + response.getStatusLine().toString());
}
} else if (info.requiredAuthType == AUTH_TYPE_FORM_BASED) {
doFBA(info);
}
} else if (mAuthentication == AUTH_TYPE_BASIC) {
// Nothing to do, we authenticate with every request when
// using basic authentication.
} else if (mAuthentication == AUTH_TYPE_FORM_BASED) {
// Our cookie expired, re-authenticate.
doFBA(null);
}
} catch (IOException ioe) {
Log.e(LOG_TAG, "Error during authentication: " + ioe + "\nStack: " + processException(ioe));
throw new MessagingException("Error during authentication", ioe);
}
return mAuthentication != AUTH_TYPE_NONE;
}
/**
* Makes the initial connection to Exchange for authentication. Determines the type of authentication necessary for
* the server.
*
* @throws MessagingException
*/
private ConnectionInfo doInitialConnection()
throws MessagingException {
// For our initial connection we are sending an empty GET request to
// the configured URL, which should be in the following form:
// https://mail.server.com/Exchange/alias
//
// Possible status codes include:
// 401 - the server uses basic authentication
// 30x - the server is trying to redirect us to an OWA login
// 20x - success
//
// The latter two indicate form-based authentication.
ConnectionInfo info = new ConnectionInfo();
WebDavHttpClient httpClient = getHttpClient();
HttpGeneric request = new HttpGeneric(mUrl);
request.setMethod("GET");
try {
HttpResponse response = httpClient.executeOverride(request, mContext);
info.statusCode = response.getStatusLine().getStatusCode();
if (info.statusCode == 401) {
// 401 is the "Unauthorized" status code, meaning the server wants
// an authentication header for basic authentication.
info.requiredAuthType = AUTH_TYPE_BASIC;
} else if ((info.statusCode >= 200 && info.statusCode < 300) || // Success
(info.statusCode >= 300 && info.statusCode < 400) || // Redirect
(info.statusCode == 440)) { // Unauthorized
// We will handle all 3 situations the same. First we take an educated
// guess at where the authorization DLL is located. If this is this
// doesn't work, then we'll use the redirection URL for OWA login given
// to us by exchange. We can use this to scrape the location of the
// authorization URL.
info.requiredAuthType = AUTH_TYPE_FORM_BASED;
if (mAuthPath != null && !mAuthPath.equals("")) {
// The user specified their own authentication path, use that.
info.guessedAuthUrl = getRoot() + mAuthPath;
} else {
// Use the default path to the authentication dll.
info.guessedAuthUrl = getRoot() + "/exchweb/bin/auth/owaauth.dll";
}
// Determine where the server is trying to redirect us.
Header location = response.getFirstHeader("Location");
if (location != null) {
info.redirectUrl = location.getValue();
}
} else {
throw new IOException("Error with code " + info.statusCode + " during request processing: " +
response.getStatusLine().toString());
}
} catch (SSLException e) {
throw new CertificateValidationException(e.getMessage(), e);
} catch (IOException ioe) {
Log.e(LOG_TAG, "IOException: " + ioe + "\nTrace: " + processException(ioe));
throw new MessagingException("IOException", ioe);
}
return info;
}
/**
* Performs form-based authentication.
*
* @throws MessagingException
*/
public void doFBA(ConnectionInfo info)
throws IOException, MessagingException {
// Clear out cookies from any previous authentication.
mAuthCookies.clear();
WebDavHttpClient httpClient = getHttpClient();
String loginUrl;
if (info != null) {
loginUrl = info.guessedAuthUrl;
} else if (mCachedLoginUrl != null && !mCachedLoginUrl.equals("")) {
loginUrl = mCachedLoginUrl;
} else {
throw new MessagingException("No valid login URL available for form-based authentication.");
}
HttpGeneric request = new HttpGeneric(loginUrl);
request.setMethod("POST");
// Build the POST data.
List<BasicNameValuePair> pairs = new ArrayList<BasicNameValuePair>();
pairs.add(new BasicNameValuePair("destination", mUrl));
pairs.add(new BasicNameValuePair("username", mUsername));
pairs.add(new BasicNameValuePair("password", mPassword));
pairs.add(new BasicNameValuePair("flags", "0"));
pairs.add(new BasicNameValuePair("SubmitCreds", "Log+On"));
pairs.add(new BasicNameValuePair("forcedownlevel", "0"));
pairs.add(new BasicNameValuePair("trusted", "0"));
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(pairs);
request.setEntity(formEntity);
HttpResponse response = httpClient.executeOverride(request, mContext);
boolean authenticated = testAuthenticationResponse(response);
if (!authenticated) {
// Check the response from the authentication request above for a form action.
String formAction = findFormAction(WebDavHttpClient.getUngzippedContent(response.getEntity()));
if (formAction == null) {
// If there is no form action, try using our redirect URL from the initial connection.
if (info != null && info.redirectUrl != null && !info.redirectUrl.equals("")) {
loginUrl = info.redirectUrl;
request = new HttpGeneric(loginUrl);
request.setMethod("GET");
response = httpClient.executeOverride(request, mContext);
formAction = findFormAction(WebDavHttpClient.getUngzippedContent(response.getEntity()));
}
}
if (formAction != null) {
try {
URI formActionUri = new URI(formAction);
URI loginUri = new URI(loginUrl);
if (formActionUri.isAbsolute()) {
// The form action is an absolute URL, just use it.
loginUrl = formAction;
} else {
// Append the form action to our current URL, minus the file name.
String urlPath;
if (formAction.startsWith("/")) {
urlPath = formAction;
} else {
urlPath = loginUri.getPath();
int lastPathPos = urlPath.lastIndexOf('/');
if (lastPathPos > -1) {
urlPath = urlPath.substring(0, lastPathPos + 1);
urlPath = urlPath.concat(formAction);
}
}
// Reconstruct the login URL based on the original login URL and the form action.
URI finalUri = new URI(loginUri.getScheme(),
loginUri.getUserInfo(),
loginUri.getHost(),
loginUri.getPort(),
urlPath,
null,
null);
loginUrl = finalUri.toString();
}
// Retry the login using our new URL.
request = new HttpGeneric(loginUrl);
request.setMethod("POST");
request.setEntity(formEntity);
response = httpClient.executeOverride(request, mContext);
authenticated = testAuthenticationResponse(response);
} catch (URISyntaxException e) {
Log.e(LOG_TAG, "URISyntaxException caught " + e + "\nTrace: " + processException(e));
throw new MessagingException("URISyntaxException caught", e);
}
} else {
throw new MessagingException("A valid URL for Exchange authentication could not be found.");
}
}
if (authenticated) {
mAuthentication = AUTH_TYPE_FORM_BASED;
mCachedLoginUrl = loginUrl;
} else {
throw new MessagingException("Invalid credentials provided for authentication.");
}
}
/**
* Searches the specified stream for an HTML form and returns the form's action target.
*
* @throws IOException
*/
private String findFormAction(InputStream istream)
throws IOException {
String formAction = null;
BufferedReader reader = new BufferedReader(new InputStreamReader(istream), 4096);
String tempText;
// Read line by line until we find something like: <form action="owaauth.dll"...>.
while ((tempText = reader.readLine()) != null &&
formAction == null) {
if (tempText.contains(" action=")) {
String[] actionParts = tempText.split(" action=");
if (actionParts.length > 1 && actionParts[1].length() > 1) {
char openQuote = actionParts[1].charAt(0);
int closePos = actionParts[1].indexOf(openQuote, 1);
if (closePos > 1) {
formAction = actionParts[1].substring(1, closePos);
// Remove any GET parameters.
int quesPos = formAction.indexOf('?');
if (quesPos != -1) {
formAction = formAction.substring(0, quesPos);
}
}
}
}
}
return formAction;
}
private boolean testAuthenticationResponse(HttpResponse response)
throws MessagingException {
boolean authenticated = false;
int statusCode = response.getStatusLine().getStatusCode();
// Exchange 2007 will return a 302 status code no matter what.
if (((statusCode >= 200 && statusCode < 300) || statusCode == 302) &&
mAuthCookies != null && !mAuthCookies.getCookies().isEmpty()) {
// We may be authenticated, we need to send a test request to know for sure.
// Exchange 2007 adds the same cookies whether the username and password were valid or not.
ConnectionInfo info = doInitialConnection();
if (info.statusCode >= 200 && info.statusCode < 300) {
authenticated = true;
} else if (info.statusCode == 302) {
// If we are successfully authenticated, Exchange will try to redirect us to our OWA inbox.
// Otherwise, it will redirect us to a logon page.
// Our URL is in the form: https://hostname:port/Exchange/alias.
// The redirect is in the form: https://hostname:port/owa/alias.
// Do a simple replace and compare the resulting strings.
try {
String thisPath = new URI(mUrl).getPath();
String redirectPath = new URI(info.redirectUrl).getPath();
if (!thisPath.endsWith("/")) {
thisPath = thisPath.concat("/");
}
if (!redirectPath.endsWith("/")) {
redirectPath = redirectPath.concat("/");
}
if (redirectPath.equalsIgnoreCase(thisPath)) {
authenticated = true;
} else {
int found = thisPath.indexOf('/', 1);
if (found != -1) {
String replace = thisPath.substring(0, found + 1);
redirectPath = redirectPath.replace("/owa/", replace);
if (redirectPath.equalsIgnoreCase(thisPath)) {
authenticated = true;
}
}
}
} catch (URISyntaxException e) {
Log.e(LOG_TAG, "URISyntaxException caught " + e + "\nTrace: " + processException(e));
throw new MessagingException("URISyntaxException caught", e);
}
}
}
return authenticated;
}
public CookieStore getAuthCookies() {
return mAuthCookies;
}
public String getAlias() {
return mAlias;
}
public String getUrl() {
return mUrl;
}
public WebDavHttpClient getHttpClient() throws MessagingException {
if (mHttpClient == null) {
mHttpClient = new WebDavHttpClient();
// Disable automatic redirects on the http client.
mHttpClient.getParams().setBooleanParameter("http.protocol.handle-redirects", false);
// Setup a cookie store for forms-based authentication.
mContext = new BasicHttpContext();
mAuthCookies = new BasicCookieStore();
mContext.setAttribute(ClientContext.COOKIE_STORE, mAuthCookies);
SchemeRegistry reg = mHttpClient.getConnectionManager().getSchemeRegistry();
try {
Scheme s = new Scheme("https", new WebDavSocketFactory(mHost, 443), 443);
reg.register(s);
} catch (NoSuchAlgorithmException nsa) {
Log.e(LOG_TAG, "NoSuchAlgorithmException in getHttpClient: " + nsa);
throw new MessagingException("NoSuchAlgorithmException in getHttpClient: " + nsa);
} catch (KeyManagementException kme) {
Log.e(LOG_TAG, "KeyManagementException in getHttpClient: " + kme);
throw new MessagingException("KeyManagementException in getHttpClient: " + kme);
}
}
return mHttpClient;
}
private InputStream sendRequest(String url, String method, StringEntity messageBody,
Map<String, String> headers, boolean tryAuth)
throws MessagingException {
if (url == null || method == null) {
return null;
}
WebDavHttpClient httpClient = getHttpClient();
try {
int statusCode;
HttpGeneric httpMethod = new HttpGeneric(url);
HttpResponse response;
HttpEntity entity;
if (messageBody != null) {
httpMethod.setEntity(messageBody);
}
if (headers != null) {
for (Map.Entry<String, String> entry : headers.entrySet()) {
httpMethod.setHeader(entry.getKey(), entry.getValue());
}
}
if (mAuthentication == AUTH_TYPE_NONE) {
if (!tryAuth || !authenticate()) {
throw new MessagingException("Unable to authenticate in sendRequest().");
}
} else if (mAuthentication == AUTH_TYPE_BASIC) {
httpMethod.setHeader("Authorization", mAuthString);
}
httpMethod.setMethod(method);
response = httpClient.executeOverride(httpMethod, mContext);
statusCode = response.getStatusLine().getStatusCode();
entity = response.getEntity();
if (statusCode == 401) {
throw new MessagingException("Invalid username or password for Basic authentication.");
} else if (statusCode == 440) {
if (tryAuth && mAuthentication == AUTH_TYPE_FORM_BASED) {
// Our cookie expired, re-authenticate.
doFBA(null);
sendRequest(url, method, messageBody, headers, false);
} else {
throw new MessagingException("Authentication failure in sendRequest().");
}
} else if (statusCode < 200 || statusCode >= 300) {
throw new IOException("Error with code " + statusCode + " during request processing: " +
response.getStatusLine().toString());
}
if (entity != null) {
return WebDavHttpClient.getUngzippedContent(entity);
}
} catch (UnsupportedEncodingException uee) {
Log.e(LOG_TAG, "UnsupportedEncodingException: " + uee + "\nTrace: " + processException(uee));
throw new MessagingException("UnsupportedEncodingException", uee);
} catch (IOException ioe) {
Log.e(LOG_TAG, "IOException: " + ioe + "\nTrace: " + processException(ioe));
throw new MessagingException("IOException", ioe);
}
return null;
}
public String getAuthString() {
return mAuthString;
}
/**
* Performs an httprequest to the supplied url using the supplied method. messageBody and headers are optional as
* not all requests will need them. There are two signatures to support calls that don't require parsing of the
* response.
*/
private DataSet processRequest(String url, String method, String messageBody, Map<String, String> headers)
throws MessagingException {
return processRequest(url, method, messageBody, headers, true);
}
private DataSet processRequest(String url, String method, String messageBody, Map<String, String> headers,
boolean needsParsing)
throws MessagingException {
DataSet dataset = new DataSet();
if (K9MailLib.isDebug() && DEBUG_PROTOCOL_WEBDAV) {
Log.v(LOG_TAG, "processRequest url = '" + url + "', method = '" + method + "', messageBody = '"
+ messageBody + "'");
}
if (url == null ||
method == null) {
return dataset;
}
getHttpClient();
try {
StringEntity messageEntity = null;
if (messageBody != null) {
messageEntity = new StringEntity(messageBody);
messageEntity.setContentType("text/xml");
}
InputStream istream = sendRequest(url, method, messageEntity, headers, true);
if (istream != null &&
needsParsing) {
try {
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
WebDavHandler myHandler = new WebDavHandler();
xr.setContentHandler(myHandler);
xr.parse(new InputSource(istream));
dataset = myHandler.getDataSet();
} catch (SAXException se) {
Log.e(LOG_TAG, "SAXException in processRequest() " + se + "\nTrace: " + processException(se));
throw new MessagingException("SAXException in processRequest() ", se);
} catch (ParserConfigurationException pce) {
Log.e(LOG_TAG, "ParserConfigurationException in processRequest() " + pce + "\nTrace: "
+ processException(pce));
throw new MessagingException("ParserConfigurationException in processRequest() ", pce);
}
istream.close();
}
} catch (UnsupportedEncodingException uee) {
Log.e(LOG_TAG, "UnsupportedEncodingException: " + uee + "\nTrace: " + processException(uee));
throw new MessagingException("UnsupportedEncodingException in processRequest() ", uee);
} catch (IOException ioe) {
Log.e(LOG_TAG, "IOException: " + ioe + "\nTrace: " + processException(ioe));
throw new MessagingException("IOException in processRequest() ", ioe);
}
return dataset;
}
/**
* Returns a string of the stacktrace for a Throwable to allow for easy inline printing of errors.
*/
private String processException(Throwable t) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PrintStream ps = new PrintStream(baos);
t.printStackTrace(ps);
ps.close();
return baos.toString();
}
@Override
public boolean isSendCapable() {
return true;
}
@Override
public void sendMessages(List<? extends Message> messages) throws MessagingException {
WebDavFolder tmpFolder = (WebDavStore.WebDavFolder) getFolder(mStoreConfig.getDraftsFolderName());
try {
tmpFolder.open(Folder.OPEN_MODE_RW);
List<? extends Message> retMessages = tmpFolder.appendWebDavMessages(messages);
tmpFolder.moveMessages(retMessages, getSendSpoolFolder());
} finally {
if (tmpFolder != null) {
tmpFolder.close();
}
}
}
/*************************************************************************
* Helper and Inner classes
*/
/**
* A WebDav Folder
*/
class WebDavFolder extends Folder<WebDavMessage> {
private String mName;
private String mFolderUrl;
private boolean mIsOpen = false;
private int mMessageCount = 0;
private int mUnreadMessageCount = 0;
private WebDavStore store;
protected WebDavStore getStore() {
return store;
}
public WebDavFolder(WebDavStore nStore, String name) {
super();
store = nStore;
this.mName = name;
String encodedName;
String[] urlParts = name.split("/");
String url = "";
for (int i = 0, count = urlParts.length; i < count; i++) {
if (i != 0) {
url = url + "/" + encodeUtf8(urlParts[i]);
} else {
url = encodeUtf8(urlParts[i]);
}
}
encodedName = url;
encodedName = encodedName.replaceAll("\\+", "%20");
this.mFolderUrl = WebDavStore.this.mUrl;
if (!WebDavStore.this.mUrl.endsWith("/")) {
this.mFolderUrl += "/";
}
this.mFolderUrl += encodedName;
}
public void setUrl(String url) {
if (url != null) {
this.mFolderUrl = url;
}
}
@Override
public void open(int mode) throws MessagingException {
getHttpClient();
this.mIsOpen = true;
}
@Override
public Map<String, String> copyMessages(List<? extends Message> messages, Folder folder) throws MessagingException {
moveOrCopyMessages(messages, folder.getName(), false);
return null;
}
@Override
public Map<String, String> moveMessages(List<? extends Message> messages, Folder folder) throws MessagingException {
moveOrCopyMessages(messages, folder.getName(), true);
return null;
}
@Override
public void delete(List<? extends Message> msgs, String trashFolderName) throws MessagingException {
moveOrCopyMessages(msgs, trashFolderName, true);
}
private void moveOrCopyMessages(List<? extends Message> messages, String folderName, boolean isMove)
throws MessagingException {
String[] uids = new String[messages.size()];
for (int i = 0, count = messages.size(); i < count; i++) {
uids[i] = messages.get(i).getUid();
}
String messageBody;
Map<String, String> headers = new HashMap<String, String>();
Map<String, String> uidToUrl = getMessageUrls(uids);
String[] urls = new String[uids.length];
for (int i = 0, count = uids.length; i < count; i++) {
urls[i] = uidToUrl.get(uids[i]);
if (urls[i] == null && messages.get(i) instanceof WebDavMessage) {
WebDavMessage wdMessage = (WebDavMessage) messages.get(i);
urls[i] = wdMessage.getUrl();
}
}
messageBody = getMoveOrCopyMessagesReadXml(urls, isMove);
WebDavFolder destFolder = (WebDavFolder) store.getFolder(folderName);
headers.put("Destination", destFolder.mFolderUrl);
headers.put("Brief", "t");
headers.put("If-Match", "*");
String action = (isMove ? "BMOVE" : "BCOPY");
Log.i(LOG_TAG, "Moving " + messages.size() + " messages to " + destFolder.mFolderUrl);
processRequest(mFolderUrl, action, messageBody, headers, false);
}
private int getMessageCount(boolean read) throws MessagingException {
String isRead;
int messageCount = 0;
Map<String, String> headers = new HashMap<String, String>();
String messageBody;
if (read) {
isRead = "True";
} else {
isRead = "False";
}
messageBody = getMessageCountXml(isRead);
headers.put("Brief", "t");
DataSet dataset = processRequest(this.mFolderUrl, "SEARCH", messageBody, headers);
if (dataset != null) {
messageCount = dataset.getMessageCount();
}
if (K9MailLib.isDebug() && DEBUG_PROTOCOL_WEBDAV) {
Log.v(LOG_TAG, "Counted messages and webdav returned: "+messageCount);
}
return messageCount;
}
@Override
public int getMessageCount() throws MessagingException {
open(Folder.OPEN_MODE_RW);
this.mMessageCount = getMessageCount(true);
return this.mMessageCount;
}
@Override
public int getUnreadMessageCount() throws MessagingException {
open(Folder.OPEN_MODE_RW);
this.mUnreadMessageCount = getMessageCount(false);
return this.mUnreadMessageCount;
}
@Override
public int getFlaggedMessageCount() throws MessagingException {
return -1;
}
@Override
public boolean isOpen() {
return this.mIsOpen;
}
@Override
public int getMode() {
return Folder.OPEN_MODE_RW;
}
@Override
public String getName() {
return this.mName;
}
@Override
public boolean exists() {
return true;
}
@Override
public void close() {
this.mMessageCount = 0;
this.mUnreadMessageCount = 0;
this.mIsOpen = false;
}
@Override
public boolean create(FolderType type) throws MessagingException {
return true;
}
@Override
public void delete(boolean recursive) throws MessagingException {
throw new Error("WebDavFolder.delete() not implemeneted");
}
@Override
public WebDavMessage getMessage(String uid) throws MessagingException {
return new WebDavMessage(uid, this);
}
@Override
public List<WebDavMessage> getMessages(int start, int end, Date earliestDate, MessageRetrievalListener<WebDavMessage> listener)
throws MessagingException {
List<WebDavMessage> messages = new ArrayList<WebDavMessage>();
String[] uids;
Map<String, String> headers = new HashMap<String, String>();
int uidsLength;
String messageBody;
int prevStart = start;
/** Reverse the message range since 0 index is newest */
start = this.mMessageCount - end;
end = start + (end - prevStart);
if (start < 0 || end < 0 || end < start) {
throw new MessagingException(String.format(Locale.US, "Invalid message set %d %d", start, end));
}
if (start == 0 && end < 10) {
end = 10;
}
/** Verify authentication */
messageBody = getMessagesXml();
headers.put("Brief", "t");
headers.put("Range", "rows=" + start + "-" + end);
DataSet dataset = processRequest(this.mFolderUrl, "SEARCH", messageBody, headers);
uids = dataset.getUids();
Map<String, String> uidToUrl = dataset.getUidToUrl();
uidsLength = uids.length;
for (int i = 0; i < uidsLength; i++) {
if (listener != null) {
listener.messageStarted(uids[i], i, uidsLength);
}
WebDavMessage message = new WebDavMessage(uids[i], this);
message.setUrl(uidToUrl.get(uids[i]));
messages.add(message);
if (listener != null) {
listener.messageFinished(message, i, uidsLength);
}
}
return messages;
}
@Override
public List<WebDavMessage> getMessages(MessageRetrievalListener<WebDavMessage> listener) throws MessagingException {
return getMessages(null, listener);
}
@Override
public List<WebDavMessage> getMessages(String[] uids, MessageRetrievalListener<WebDavMessage> listener) throws MessagingException {
List<WebDavMessage> messageList = new ArrayList<WebDavMessage>();
if (uids == null ||
uids.length == 0) {
return messageList;
}
for (int i = 0, count = uids.length; i < count; i++) {
if (listener != null) {
listener.messageStarted(uids[i], i, count);
}
WebDavMessage message = new WebDavMessage(uids[i], this);
messageList.add(message);
if (listener != null) {
listener.messageFinished(message, i, count);
}
}
return messageList;
}
private Map<String, String> getMessageUrls(String[] uids) throws MessagingException {
Map<String, String> headers = new HashMap<String, String>();
String messageBody;
/** Retrieve and parse the XML entity for our messages */
messageBody = getMessageUrlsXml(uids);
headers.put("Brief", "t");
DataSet dataset = processRequest(this.mFolderUrl, "SEARCH", messageBody, headers);
return dataset.getUidToUrl();
}
@Override
public void fetch(List<WebDavMessage> messages, FetchProfile fp, MessageRetrievalListener<WebDavMessage> listener)
throws MessagingException {
if (messages == null ||
messages.isEmpty()) {
return;
}
/**
* Fetch message envelope information for the array
*/
if (fp.contains(FetchProfile.Item.ENVELOPE)) {
fetchEnvelope(messages, listener);
}
/**
* Fetch message flag info for the array
*/
if (fp.contains(FetchProfile.Item.FLAGS)) {
fetchFlags(messages, listener);
}
if (fp.contains(FetchProfile.Item.BODY_SANE)) {
if (mStoreConfig.getMaximumAutoDownloadMessageSize() > 0) {
fetchMessages(messages, listener, (mStoreConfig.getMaximumAutoDownloadMessageSize() / 76));
} else {
fetchMessages(messages, listener, -1);
}
}
if (fp.contains(FetchProfile.Item.BODY)) {
fetchMessages(messages, listener, -1);
}
}
/**
* Fetches the full messages or up to lines lines and passes them to the message parser.
*/
private void fetchMessages(List<? extends Message> messages, MessageRetrievalListener<WebDavMessage> listener, int lines)
throws MessagingException {
WebDavHttpClient httpclient;
httpclient = getHttpClient();
/**
* We can't hand off to processRequest() since we need the stream to parse.
*/
for (int i = 0, count = messages.size(); i < count; i++) {
WebDavMessage wdMessage;
int statusCode = 0;
if (!(messages.get(i) instanceof WebDavMessage)) {
throw new MessagingException("WebDavStore fetch called with non-WebDavMessage");
}
wdMessage = (WebDavMessage) messages.get(i);
if (listener != null) {
listener.messageStarted(wdMessage.getUid(), i, count);
}
/**
* If fetch is called outside of the initial list (ie, a locally stored message), it may not have a URL
* associated. Verify and fix that
*/
if (wdMessage.getUrl().equals("")) {
wdMessage.setUrl(getMessageUrls(new String[] { wdMessage.getUid() }).get(wdMessage.getUid()));
Log.i(LOG_TAG, "Fetching messages with UID = '" + wdMessage.getUid() + "', URL = '"
+ wdMessage.getUrl() + "'");
if (wdMessage.getUrl().equals("")) {
throw new MessagingException("Unable to get URL for message");
}
}
try {
Log.i(LOG_TAG, "Fetching message with UID = '" + wdMessage.getUid() + "', URL = '"
+ wdMessage.getUrl() + "'");
HttpGet httpget = new HttpGet(new URI(wdMessage.getUrl()));
HttpResponse response;
HttpEntity entity;
httpget.setHeader("translate", "f");
if (mAuthentication == AUTH_TYPE_BASIC) {
httpget.setHeader("Authorization", mAuthString);
}
response = httpclient.executeOverride(httpget, mContext);
statusCode = response.getStatusLine().getStatusCode();
entity = response.getEntity();
if (statusCode < 200 ||
statusCode > 300) {
throw new IOException("Error during with code " + statusCode + " during fetch: "
+ response.getStatusLine().toString());
}
if (entity != null) {
InputStream istream = null;
StringBuilder buffer = new StringBuilder();
String tempText;
String resultText;
BufferedReader reader = null;
int currentLines = 0;
try {
istream = WebDavHttpClient.getUngzippedContent(entity);
if (lines != -1) {
reader = new BufferedReader(new InputStreamReader(istream), 8192);
while ((tempText = reader.readLine()) != null &&
(currentLines < lines)) {
buffer.append(tempText).append("\r\n");
currentLines++;
}
istream.close();
resultText = buffer.toString();
istream = new ByteArrayInputStream(resultText.getBytes("UTF-8"));
}
wdMessage.parse(istream);
} finally {
IOUtils.closeQuietly(reader);
IOUtils.closeQuietly(istream);
}
}
} catch (IllegalArgumentException iae) {
Log.e(LOG_TAG, "IllegalArgumentException caught " + iae + "\nTrace: " + processException(iae));
throw new MessagingException("IllegalArgumentException caught", iae);
} catch (URISyntaxException use) {
Log.e(LOG_TAG, "URISyntaxException caught " + use + "\nTrace: " + processException(use));
throw new MessagingException("URISyntaxException caught", use);
} catch (IOException ioe) {
Log.e(LOG_TAG, "Non-success response code loading message, response code was " + statusCode
+ "\nURL: " + wdMessage.getUrl() + "\nError: " + ioe.getMessage() + "\nTrace: "
+ processException(ioe));
throw new MessagingException("Failure code " + statusCode, ioe);
}
if (listener != null) {
listener.messageFinished(wdMessage, i, count);
}
}
}
/**
* Fetches and sets the message flags for the supplied messages. The idea is to have this be recursive so that
* we do a series of medium calls instead of one large massive call or a large number of smaller calls.
*/
private void fetchFlags(List<WebDavMessage> startMessages, MessageRetrievalListener<WebDavMessage> listener) throws MessagingException {
HashMap<String, String> headers = new HashMap<String, String>();
String messageBody;
List<Message> messages = new ArrayList<Message>(20);
String[] uids;
if (startMessages == null ||
startMessages.isEmpty()) {
return;
}
if (startMessages.size() > 20) {
List<WebDavMessage> newMessages = new ArrayList<WebDavMessage>(startMessages.size() - 20);
for (int i = 0, count = startMessages.size(); i < count; i++) {
if (i < 20) {
messages.set(i, startMessages.get(i));
} else {
newMessages.set(i - 20, startMessages.get(i));
}
}
fetchFlags(newMessages, listener);
} else {
messages.addAll(startMessages);
}
uids = new String[messages.size()];
for (int i = 0, count = messages.size(); i < count; i++) {
uids[i] = messages.get(i).getUid();
}
messageBody = getMessageFlagsXml(uids);
headers.put("Brief", "t");
DataSet dataset = processRequest(this.mFolderUrl, "SEARCH", messageBody, headers);
if (dataset == null) {
throw new MessagingException("Data Set from request was null");
}
Map<String, Boolean> uidToReadStatus = dataset.getUidToRead();
for (int i = 0, count = messages.size(); i < count; i++) {
if (!(messages.get(i) instanceof WebDavMessage)) {
throw new MessagingException("WebDavStore fetch called with non-WebDavMessage");
}
WebDavMessage wdMessage = (WebDavMessage) messages.get(i);
if (listener != null) {
listener.messageStarted(wdMessage.getUid(), i, count);
}
try {
wdMessage.setFlagInternal(Flag.SEEN, uidToReadStatus.get(wdMessage.getUid()));
} catch (NullPointerException e) {
Log.v(LOG_TAG,"Under some weird circumstances, setting the read status when syncing from webdav threw an NPE. Skipping.");
}
if (listener != null) {
listener.messageFinished(wdMessage, i, count);
}
}
}
/**
* Fetches and parses the message envelopes for the supplied messages. The idea is to have this be recursive so
* that we do a series of medium calls instead of one large massive call or a large number of smaller calls.
* Call it a happy balance
*/
private void fetchEnvelope(List<WebDavMessage> startMessages, MessageRetrievalListener<WebDavMessage> listener)
throws MessagingException {
Map<String, String> headers = new HashMap<String, String>();
String messageBody;
String[] uids;
List<WebDavMessage> messages = new ArrayList<WebDavMessage>(10);
if (startMessages == null ||
startMessages.isEmpty()) {
return;
}
if (startMessages.size() > 10) {
List<WebDavMessage> newMessages = new ArrayList<WebDavMessage>(startMessages.size() - 10);
for (int i = 0, count = startMessages.size(); i < count; i++) {
if (i < 10) {
messages.set(i, startMessages.get(i));
} else {
newMessages.set(i - 10,startMessages.get(i));
}
}
fetchEnvelope(newMessages, listener);
} else {
messages.addAll(startMessages);
}
uids = new String[messages.size()];
for (int i = 0, count = messages.size(); i < count; i++) {
uids[i] = messages.get(i).getUid();
}
messageBody = getMessageEnvelopeXml(uids);
headers.put("Brief", "t");
DataSet dataset = processRequest(this.mFolderUrl, "SEARCH", messageBody, headers);
Map<String, ParsedMessageEnvelope> envelopes = dataset.getMessageEnvelopes();
int count = messages.size();
for (int i = messages.size() - 1; i >= 0; i--) {
WebDavMessage message = messages.get(i);
if (listener != null) {
listener.messageStarted(messages.get(i).getUid(), i, count);
}
ParsedMessageEnvelope envelope = envelopes.get(message.getUid());
if (envelope != null) {
message.setNewHeaders(envelope);
message.setFlagInternal(Flag.SEEN, envelope.getReadStatus());
} else {
Log.e(LOG_TAG, "Asked to get metadata for a non-existent message: " + message.getUid());
}
if (listener != null) {
listener.messageFinished(messages.get(i), i, count);
}
}
}
@Override
public void setFlags(List<? extends Message> messages, final Set<Flag> flags, boolean value)
throws MessagingException {
String[] uids = new String[messages.size()];
for (int i = 0, count = messages.size(); i < count; i++) {
uids[i] = messages.get(i).getUid();
}
for (Flag flag : flags) {
if (flag == Flag.SEEN) {
markServerMessagesRead(uids, value);
} else if (flag == Flag.DELETED) {
deleteServerMessages(uids);
}
}
}
private void markServerMessagesRead(String[] uids, boolean read) throws MessagingException {
String messageBody;
Map<String, String> headers = new HashMap<String, String>();
Map<String, String> uidToUrl = getMessageUrls(uids);
String[] urls = new String[uids.length];
for (int i = 0, count = uids.length; i < count; i++) {
urls[i] = uidToUrl.get(uids[i]);
}
messageBody = getMarkMessagesReadXml(urls, read);
headers.put("Brief", "t");
headers.put("If-Match", "*");
processRequest(this.mFolderUrl, "BPROPPATCH", messageBody, headers, false);
}
private void deleteServerMessages(String[] uids) throws MessagingException {
Map<String, String> uidToUrl = getMessageUrls(uids);
for (String uid : uids) {
Map<String, String> headers = new HashMap<String, String>();
String url = uidToUrl.get(uid);
String destinationUrl = generateDeleteUrl(url);
/**
* If the destination is the same as the origin, assume delete forever
*/
if (destinationUrl.equals(url)) {
headers.put("Brief", "t");
processRequest(url, "DELETE", null, headers, false);
} else {
headers.put("Destination", generateDeleteUrl(url));
headers.put("Brief", "t");
processRequest(url, "MOVE", null, headers, false);
}
}
}
private String generateDeleteUrl(String startUrl) {
String[] urlParts = startUrl.split("/");
String filename = urlParts[urlParts.length - 1];
return WebDavStore.this.mUrl + "Deleted%20Items/" + filename;
}
@Override
public Map<String, String> appendMessages(List<? extends Message> messages) throws MessagingException {
appendWebDavMessages(messages);
return null;
}
public List<? extends Message> appendWebDavMessages(List<? extends Message> messages) throws MessagingException {
List<Message> retMessages = new ArrayList<Message>(messages.size());
int ind = 0;
WebDavHttpClient httpclient = getHttpClient();
for (Message message : messages) {
HttpGeneric httpmethod;
HttpResponse response;
StringEntity bodyEntity;
int statusCode;
try {
ByteArrayOutputStream out;
out = new ByteArrayOutputStream(message.getSize());
open(Folder.OPEN_MODE_RW);
EOLConvertingOutputStream msgOut = new EOLConvertingOutputStream(
new BufferedOutputStream(out, 1024));
message.writeTo(msgOut);
msgOut.flush();
bodyEntity = new StringEntity(out.toString(), "UTF-8");
bodyEntity.setContentType("message/rfc822");
String messageURL = mFolderUrl;
if (!messageURL.endsWith("/")) {
messageURL += "/";
}
messageURL += encodeUtf8(message.getUid() + ":" + System.currentTimeMillis() + ".eml");
Log.i(LOG_TAG, "Uploading message as " + messageURL);
httpmethod = new HttpGeneric(messageURL);
httpmethod.setMethod("PUT");
httpmethod.setEntity(bodyEntity);
String mAuthString = getAuthString();
if (mAuthString != null) {
httpmethod.setHeader("Authorization", mAuthString);
}
response = httpclient.executeOverride(httpmethod, mContext);
statusCode = response.getStatusLine().getStatusCode();
if (statusCode < 200 ||
statusCode > 300) {
throw new IOException("Error with status code " + statusCode
+ " while sending/appending message. Response = "
+ response.getStatusLine().toString() + " for message " + messageURL);
}
WebDavMessage retMessage = new WebDavMessage(message.getUid(), this);
retMessage.setUrl(messageURL);
retMessages.set(ind++, retMessage);
} catch (Exception e) {
throw new MessagingException("Unable to append", e);
}
}
return retMessages;
}
@Override
public boolean equals(Object o) {
return false;
}
@Override
public String getUidFromMessageId(Message message) throws MessagingException {
Log.e(LOG_TAG,
"Unimplemented method getUidFromMessageId in WebDavStore.WebDavFolder could lead to duplicate messages "
+ " being uploaded to the Sent folder");
return null;
}
@Override
public void setFlags(final Set<Flag> flags, boolean value) throws MessagingException {
Log.e(LOG_TAG,
"Unimplemented method setFlags(Set<Flag>, boolean) breaks markAllMessagesAsRead and EmptyTrash");
// Try to make this efficient by not retrieving all of the messages
}
}
/**
* A WebDav Message
*/
class WebDavMessage extends MimeMessage {
private String mUrl = "";
WebDavMessage(String uid, Folder folder) {
this.mUid = uid;
this.mFolder = folder;
}
public void setUrl(String url) {
// TODO: This is a not as ugly hack (ie, it will actually work)
// XXX: prevent URLs from getting to us that are broken
if (!(url.toLowerCase(Locale.US).contains("http"))) {
if (!(url.startsWith("/"))) {
url = "/" + url;
}
url = WebDavStore.this.mUrl + this.mFolder + url;
}
String[] urlParts = url.split("/");
int length = urlParts.length;
String end = urlParts[length - 1];
this.mUrl = "";
url = "";
/**
* We have to decode, then encode the URL because Exchange likes to not properly encode all characters
*/
try {
end = decodeUtf8(end);
end = encodeUtf8(end);
end = end.replaceAll("\\+", "%20");
} catch (IllegalArgumentException iae) {
Log.e(LOG_TAG, "IllegalArgumentException caught in setUrl: " + iae + "\nTrace: "
+ processException(iae));
}
for (int i = 0; i < length - 1; i++) {
if (i != 0) {
url = url + "/" + urlParts[i];
} else {
url = urlParts[i];
}
}
url = url + "/" + end;
this.mUrl = url;
}
public String getUrl() {
return this.mUrl;
}
public void setSize(int size) {
this.mSize = size;
}
public void setFlagInternal(Flag flag, boolean set) throws MessagingException {
super.setFlag(flag, set);
}
public void setNewHeaders(ParsedMessageEnvelope envelope) throws MessagingException {
String[] headers = envelope.getHeaderList();
Map<String, String> messageHeaders = envelope.getMessageHeaders();
for (String header : headers) {
String headerValue = messageHeaders.get(header);
if (header.equals("Content-Length")) {
int size = Integer.parseInt(messageHeaders.get(header));
this.setSize(size);
}
if (headerValue != null &&
!headerValue.equals("")) {
this.addHeader(header, headerValue);
}
}
}
@Override
public void delete(String trashFolderName) throws MessagingException {
WebDavFolder wdFolder = (WebDavFolder) getFolder();
Log.i(LOG_TAG, "Deleting message by moving to " + trashFolderName);
wdFolder.moveMessages(Collections.singletonList(this), wdFolder.getStore().getFolder(trashFolderName));
}
@Override
public void setFlag(Flag flag, boolean set) throws MessagingException {
super.setFlag(flag, set);
mFolder.setFlags(Collections.singletonList(this), Collections.singleton(flag), set);
}
}
/**
* XML Parsing Handler Can handle all XML handling needs
*/
public class WebDavHandler extends DefaultHandler {
private DataSet mDataSet = new DataSet();
private final LinkedList<String> mOpenTags = new LinkedList<String>();
public DataSet getDataSet() {
return this.mDataSet;
}
@Override
public void startDocument() throws SAXException {
this.mDataSet = new DataSet();
}
@Override
public void endDocument() throws SAXException {
/* Do nothing */
}
@Override
public void startElement(String namespaceURI, String localName,
String qName, Attributes atts) throws SAXException {
mOpenTags.addFirst(localName);
}
@Override
public void endElement(String namespaceURI, String localName, String qName) {
mOpenTags.removeFirst();
/** Reset the hash temp variables */
if (localName.equals("response")) {
this.mDataSet.finish();
}
}
@Override
public void characters(char ch[], int start, int length) {
String value = new String(ch, start, length);
mDataSet.addValue(value, mOpenTags.peek());
}
}
/**
* Data set for a single E-Mail message's required headers (the envelope) Only provides accessor methods to the
* stored data. All processing should be done elsewhere. This is done rather than having multiple hashmaps
* associating UIDs to values
*/
public static class ParsedMessageEnvelope {
/**
* Holds the mappings from the name returned from Exchange to the MIME format header name
*/
private static final Map<String, String> HEADER_MAPPINGS;
static {
Map<String, String> map = new HashMap<String, String>();
map.put("mime-version", "MIME-Version");
map.put("content-type", "Content-Type");
map.put("subject", "Subject");
map.put("date", "Date");
map.put("thread-topic", "Thread-Topic");
map.put("thread-index", "Thread-Index");
map.put("from", "From");
map.put("to", "To");
map.put("in-reply-to", "In-Reply-To");
map.put("cc", "Cc");
map.put("getcontentlength", "Content-Length");
HEADER_MAPPINGS = Collections.unmodifiableMap(map);
}
private boolean mReadStatus = false;
private String mUid = "";
private Map<String, String> mMessageHeaders = new HashMap<String, String>();
private List<String> mHeaders = new ArrayList<String>();
public void addHeader(String field, String value) {
String headerName = HEADER_MAPPINGS.get(field);
if (headerName != null) {
this.mMessageHeaders.put(HEADER_MAPPINGS.get(field), value);
this.mHeaders.add(HEADER_MAPPINGS.get(field));
}
}
public Map<String, String> getMessageHeaders() {
return this.mMessageHeaders;
}
public String[] getHeaderList() {
return this.mHeaders.toArray(EMPTY_STRING_ARRAY);
}
public void setReadStatus(boolean status) {
this.mReadStatus = status;
}
public boolean getReadStatus() {
return this.mReadStatus;
}
public void setUid(String uid) {
if (uid != null) {
this.mUid = uid;
}
}
public String getUid() {
return this.mUid;
}
}
/**
* Dataset for all XML parses. Data is stored in a single format inside the class and is formatted appropriately
* depending on the accessor calls made.
*/
public class DataSet {
private Map<String, Map<String, String>> mData = new HashMap<String, Map<String, String>>();
private StringBuilder mUid = new StringBuilder();
private Map<String, String> mTempData = new HashMap<String, String>();
public void addValue(String value, String tagName) {
if (tagName.equals("uid")) {
mUid.append(value);
}
if (mTempData.containsKey(tagName)) {
mTempData.put(tagName, mTempData.get(tagName) + value);
} else {
mTempData.put(tagName, value);
}
}
public void finish() {
String uid = mUid.toString();
if (mTempData != null) {
mData.put(uid, mTempData);
} else if (mTempData != null) {
/*
* Lost Data are for requests that don't include a message UID. These requests should only have a depth
* of one for the response so it will never get stomped over.
*/
}
mUid = new StringBuilder();
mTempData = new HashMap<String, String>();
}
/**
* Returns a hashmap of special folder name => special folder url
*/
public Map<String, String> getSpecialFolderToUrl() {
// We return the first (and only) map
for (Map<String, String> folderMap : mData.values()) {
return folderMap;
}
return new HashMap<String, String>();
}
/**
* Returns a hashmap of Message UID => Message Url
*/
public Map<String, String> getUidToUrl() {
Map<String, String> uidToUrl = new HashMap<String, String>();
for (String uid : mData.keySet()) {
Map<String, String> data = mData.get(uid);
String value = data.get("href");
if (value != null &&
!value.equals("")) {
uidToUrl.put(uid, value);
}
}
return uidToUrl;
}
/**
* Returns a hashmap of Message UID => Read Status
*/
public Map<String, Boolean> getUidToRead() {
Map<String, Boolean> uidToRead = new HashMap<String, Boolean>();
for (String uid : mData.keySet()) {
Map<String, String> data = mData.get(uid);
String readStatus = data.get("read");
if (readStatus != null && !readStatus.equals("")) {
Boolean value = !readStatus.equals("0");
uidToRead.put(uid, value);
} else {
// We don't actually want to have null values in our hashmap,
// as it causes the calling code to crash with an NPE as it
// does a lookup in the map.
uidToRead.put(uid, false);
}
}
return uidToRead;
}
/**
* Returns an array of all hrefs (urls) that were received
*/
public String[] getHrefs() {
List<String> hrefs = new ArrayList<String>();
for (String uid : mData.keySet()) {
Map<String, String> data = mData.get(uid);
String href = data.get("href");
hrefs.add(href);
}
return hrefs.toArray(EMPTY_STRING_ARRAY);
}
/**
* Return an array of all Message UIDs that were received
*/
public String[] getUids() {
List<String> uids = new ArrayList<String>();
for (String uid : mData.keySet()) {
uids.add(uid);
}
return uids.toArray(EMPTY_STRING_ARRAY);
}
/**
* Returns the message count as it was retrieved
*/
public int getMessageCount() {
// It appears that Exchange is returning responses
// without a visiblecount element for empty folders
// Which resulted in this code returning -1 (as that was
// the previous default.)
// -1 is an error condition. Now the default is empty
int messageCount = 0;
for (String uid : mData.keySet()) {
Map<String, String> data = mData.get(uid);
String count = data.get("visiblecount");
if (count != null &&
!count.equals("")) {
messageCount = Integer.parseInt(count);
}
}
return messageCount;
}
/**
* Returns a Map of message UID => ParsedMessageEnvelope
*/
public Map<String, ParsedMessageEnvelope> getMessageEnvelopes() {
Map<String, ParsedMessageEnvelope> envelopes = new HashMap<String, ParsedMessageEnvelope>();
for (String uid : mData.keySet()) {
ParsedMessageEnvelope envelope = new ParsedMessageEnvelope();
Map<String, String> data = mData.get(uid);
if (data != null) {
for (Map.Entry<String, String> entry : data.entrySet()) {
String header = entry.getKey();
if (header.equals("read")) {
String read = entry.getValue();
boolean readStatus = !read.equals("0");
envelope.setReadStatus(readStatus);
} else if (header.equals("date")) {
/**
* Exchange doesn't give us rfc822 dates like it claims. The date is in the format:
* yyyy-MM-dd'T'HH:mm:ss.SSS<Single digit representation of timezone, so far, all instances
* are Z>
*/
String date = entry.getValue();
date = date.substring(0, date.length() - 1);
DateFormat dfInput = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS", Locale.US);
DateFormat dfOutput = new SimpleDateFormat("EEE, d MMM yy HH:mm:ss Z", Locale.US);
String tempDate = "";
try {
Date parsedDate = dfInput.parse(date);
tempDate = dfOutput.format(parsedDate);
} catch (java.text.ParseException pe) {
Log.e(LOG_TAG, "Error parsing date: " + pe + "\nTrace: " + processException(pe));
}
envelope.addHeader(header, tempDate);
} else {
envelope.addHeader(header, entry.getValue());
}
}
}
envelopes.put(uid, envelope);
}
return envelopes;
}
}
/**
* New HTTP Method that allows changing of the method and generic handling Needed for WebDAV custom methods such as
* SEARCH and PROPFIND
*/
public class HttpGeneric extends HttpEntityEnclosingRequestBase {
public String METHOD_NAME = "POST";
public HttpGeneric() {
super();
}
public HttpGeneric(final URI uri) {
super();
setURI(uri);
}
/**
* @throws IllegalArgumentException
* if the uri is invalid.
*/
public HttpGeneric(final String uri) {
super();
if (K9MailLib.isDebug()) {
Log.v(LOG_TAG, "Starting uri = '" + uri + "'");
}
String[] urlParts = uri.split("/");
int length = urlParts.length;
String end = urlParts[length - 1];
String url = "";
/**
* We have to decode, then encode the URL because Exchange likes to not properly encode all characters
*/
try {
if (length > 3) {
end = decodeUtf8(end);
end = encodeUtf8(end);
end = end.replaceAll("\\+", "%20");
}
} catch (IllegalArgumentException iae) {
Log.e(LOG_TAG, "IllegalArgumentException caught in HttpGeneric(String uri): " + iae + "\nTrace: "
+ processException(iae));
}
for (int i = 0; i < length - 1; i++) {
if (i != 0) {
url = url + "/" + urlParts[i];
} else {
url = urlParts[i];
}
}
if (K9MailLib.isDebug() && DEBUG_PROTOCOL_WEBDAV) {
Log.v(LOG_TAG, "url = '" + url + "' length = " + url.length()
+ ", end = '" + end + "' length = " + end.length());
}
url = url + "/" + end;
Log.i(LOG_TAG, "url = " + url);
setURI(URI.create(url));
}
@Override
public String getMethod() {
return METHOD_NAME;
}
public void setMethod(String method) {
if (method != null) {
METHOD_NAME = method;
}
}
}
public static class WebDavHttpClient extends DefaultHttpClient {
/*
* Copyright (C) 2007 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.
*/
public static void modifyRequestToAcceptGzipResponse(HttpRequest request) {
Log.i(LOG_TAG, "Requesting gzipped data");
request.addHeader("Accept-Encoding", "gzip");
}
public static InputStream getUngzippedContent(HttpEntity entity)
throws IOException {
InputStream responseStream = entity.getContent();
if (responseStream == null)
return null;
Header header = entity.getContentEncoding();
if (header == null)
return responseStream;
String contentEncoding = header.getValue();
if (contentEncoding == null)
return responseStream;
if (contentEncoding.contains("gzip")) {
Log.i(LOG_TAG, "Response is gzipped");
responseStream = new GZIPInputStream(responseStream);
}
return responseStream;
}
public HttpResponse executeOverride(HttpUriRequest request, HttpContext context)
throws IOException {
modifyRequestToAcceptGzipResponse(request);
return super.execute(request, context);
}
}
/**
* Simple data container for passing connection information.
*/
private static class ConnectionInfo {
public int statusCode;
public short requiredAuthType;
public String guessedAuthUrl;
public String redirectUrl;
}
}
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