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davmail/src/java/davmail/caldav/CaldavConnection.java

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package davmail.caldav;
import davmail.AbstractConnection;
import davmail.Settings;
import davmail.exchange.ExchangeSession;
import davmail.exchange.ExchangeSessionFactory;
import davmail.exchange.ICSBufferedReader;
import davmail.tray.DavGatewayTray;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.auth.AuthenticationException;
import org.apache.commons.httpclient.util.URIUtil;
import org.apache.log4j.Logger;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import java.io.IOException;
import java.io.StringReader;
import java.net.Socket;
import java.net.SocketException;
import java.net.SocketTimeoutException;
import java.text.SimpleDateFormat;
import java.util.*;
/**
* Handle a caldav connection.
*/
public class CaldavConnection extends AbstractConnection {
protected Logger wireLogger = Logger.getLogger(this.getClass());
protected boolean closed = false;
// Initialize the streams and start the thread
public CaldavConnection(Socket clientSocket) {
super("CaldavConnection", clientSocket, "UTF-8");
wireLogger.setLevel(Settings.getLoggingLevel("httpclient.wire"));
}
protected Map<String, String> parseHeaders() throws IOException {
HashMap<String, String> headers = new HashMap<String, String>();
String line;
while ((line = readClient()) != null && line.length() > 0) {
int index = line.indexOf(':');
if (index <= 0) {
throw new IOException("Invalid header: " + line);
}
headers.put(line.substring(0, index).toLowerCase(), line.substring(index + 1).trim());
}
return headers;
}
protected String getContent(String contentLength) throws IOException {
if (contentLength == null || contentLength.length() == 0) {
return null;
} else {
int size;
try {
size = Integer.parseInt(contentLength);
} catch (NumberFormatException e) {
throw new IOException("Invalid content length: " + contentLength);
}
char[] buffer = new char[size];
StringBuilder builder = new StringBuilder();
int actualSize = in.read(buffer);
builder.append(buffer, 0, actualSize);
if (actualSize < 0) {
throw new IOException("End of stream reached reading content");
}
// dirty hack to ensure full content read
// TODO : replace with a dedicated reader
while (builder.toString().getBytes("UTF-8").length < size) {
actualSize = in.read(buffer);
builder.append(buffer, 0, actualSize);
}
return builder.toString();
}
}
protected void setSocketTimeout(String keepAliveValue) throws IOException {
if (keepAliveValue != null && keepAliveValue.length() > 0) {
int keepAlive;
try {
keepAlive = Integer.parseInt(keepAliveValue);
} catch (NumberFormatException e) {
throw new IOException("Invalid Keep-Alive: " + keepAliveValue);
}
if (keepAlive > 300) {
keepAlive = 300;
}
client.setSoTimeout(keepAlive * 1000);
DavGatewayTray.debug("Set socket timeout to " + keepAlive + " seconds");
}
}
public void run() {
String line;
StringTokenizer tokens;
try {
while (!closed) {
line = readClient();
// unable to read line, connection closed ?
if (line == null) {
break;
}
tokens = new StringTokenizer(line);
if (tokens.hasMoreTokens()) {
String command = tokens.nextToken();
Map<String, String> headers = parseHeaders();
if (tokens.hasMoreTokens()) {
String path = tokens.nextToken();
String content = getContent(headers.get("content-length"));
setSocketTimeout(headers.get("keep-alive"));
// client requested connection close
closed = "close".equals(headers.get("connection"));
if ("OPTIONS".equals(command)) {
sendOptions();
} else if (!headers.containsKey("authorization")) {
sendUnauthorized();
} else {
decodeCredentials(headers.get("authorization"));
// authenticate only once
if (session == null) {
// first check network connectivity
ExchangeSessionFactory.checkConfig();
try {
session = ExchangeSessionFactory.getInstance(userName, password);
} catch (AuthenticationException e) {
sendUnauthorized();
}
}
if (session != null) {
handleRequest(command, path, headers, content);
}
}
} else {
sendErr(HttpStatus.SC_NOT_IMPLEMENTED, "Invalid URI");
}
}
os.flush();
}
} catch (SocketTimeoutException e) {
DavGatewayTray.debug("Closing connection on timeout");
} catch (SocketException e) {
DavGatewayTray.debug("Connection closed");
} catch (IOException e) {
DavGatewayTray.error(e);
try {
sendErr(HttpStatus.SC_INTERNAL_SERVER_ERROR, e);
} catch (IOException e2) {
DavGatewayTray.debug("Exception sending error to client", e2);
}
} finally {
close();
}
DavGatewayTray.resetIcon();
}
protected int getDepth(Map<String, String> headers) {
int result = 0;
String depthValue = headers.get("depth");
if (depthValue != null) {
try {
result = Integer.valueOf(depthValue);
} catch (NumberFormatException e) {
DavGatewayTray.warn("Invalid depth value: " + depthValue);
}
}
return result;
}
public void handleRequest(String command, String path, Map<String, String> headers, String body) throws IOException {
int depth = getDepth(headers);
String[] paths = path.split("/");
// full debug trace
if (wireLogger.isDebugEnabled()) {
wireLogger.debug("Caldav command: " + command + " " + path + " depth: " + depth + "\n" + body);
}
CaldavRequest request = null;
if ("PROPFIND".equals(command) || "REPORT".equals(command)) {
request = new CaldavRequest(body);
}
if ("OPTIONS".equals(command)) {
sendOptions();
// redirect PROPFIND on / to current user principal
} else if ("PROPFIND".equals(command) && (paths.length == 0 || paths.length == 1)) {
sendRoot(request);
} else if ("GET".equals(command) && (paths.length == 0 || paths.length == 1)) {
sendGetRoot();
// return current user calendar
} else if ("calendar".equals(paths[1])) {
StringBuilder message = new StringBuilder();
message.append("/calendar no longer supported, recreate calendar with /users/")
.append(session.getEmail()).append("/calendar");
DavGatewayTray.error(message.toString());
sendErr(HttpStatus.SC_BAD_REQUEST, message.toString());
} else if ("user".equals(paths[1])) {
sendRedirect(headers, "/principals/users/" + session.getEmail());
// principal namespace
} else if ("PROPFIND".equals(command) && "principals".equals(paths[1]) && paths.length == 4 &&
"users".equals(paths[2])) {
sendPrincipal(request, paths[3]);
// send back principal on search
} else if ("REPORT".equals(command) && "principals".equals(paths[1]) && paths.length == 3 &&
"users".equals(paths[2])) {
sendPrincipal(request, session.getEmail());
// user root
} else if ("PROPFIND".equals(command) && "users".equals(paths[1]) && paths.length == 3) {
sendUserRoot(request, depth, paths[2]);
} else if ("PROPFIND".equals(command) && "users".equals(paths[1]) && paths.length == 4 && "inbox".equals(paths[3])) {
sendInbox(request, paths[2]);
} else if ("REPORT".equals(command) && "users".equals(paths[1]) && paths.length == 4 && "inbox".equals(paths[3])) {
reportInbox();
} else if ("PROPFIND".equals(command) && "users".equals(paths[1]) && paths.length == 4 && "outbox".equals(paths[3])) {
sendOutbox(request, paths[2]);
} else if ("POST".equals(command) && "users".equals(paths[1]) && paths.length == 4 && "outbox".equals(paths[3])) {
if (body.indexOf("VFREEBUSY") >= 0) {
sendFreeBusy(body);
} else {
int status = session.sendEvent(body);
sendHttpResponse(status, true);
}
} else if ("PROPFIND".equals(command) && "users".equals(paths[1]) && paths.length == 4 && "calendar".equals(paths[3])) {
sendCalendar(request, depth, paths[2]);
} else if ("REPORT".equals(command) && "users".equals(paths[1]) && paths.length == 4 && "calendar".equals(paths[3])
// only current user for now
&& session.getEmail().equalsIgnoreCase(paths[2])) {
reportCalendar(request);
} else if ("PUT".equals(command) && "users".equals(paths[1]) && paths.length == 5 && "calendar".equals(paths[3])
// only current user for now
&& session.getEmail().equalsIgnoreCase(paths[2])) {
String etag = headers.get("if-match");
String noneMatch = headers.get("if-none-match");
ExchangeSession.EventResult eventResult = session.createOrUpdateEvent(paths[4], body, etag, noneMatch);
if (eventResult.etag != null) {
HashMap<String, String> responseHeaders = new HashMap<String, String>();
responseHeaders.put("GetETag", eventResult.etag);
sendHttpResponse(eventResult.status, responseHeaders, "text/html", "", true);
} else {
sendHttpResponse(eventResult.status, true);
}
} else if ("DELETE".equals(command) && "users".equals(paths[1]) && paths.length == 5 && "calendar".equals(paths[3])
// only current user for now
&& session.getEmail().equalsIgnoreCase(paths[2])) {
int status = session.deleteEvent(paths[4]);
sendHttpResponse(status, true);
} else if ("GET".equals(command) && "users".equals(paths[1]) && paths.length == 5 && "calendar".equals(paths[3])
// only current user for now
&& session.getEmail().equalsIgnoreCase(paths[2])) {
ExchangeSession.Event event = session.getEvent(paths[4]);
sendHttpResponse(HttpStatus.SC_OK, null, "text/calendar;charset=UTF-8", event.getICS(), true);
} else {
StringBuilder message = new StringBuilder();
message.append("Unsupported request: ").append(command).append(" ").append(path);
message.append(" Depth: ").append(depth).append("\n").append(body);
DavGatewayTray.error(message.toString());
sendErr(HttpStatus.SC_BAD_REQUEST, message.toString());
}
}
protected void appendEventsResponses(StringBuilder buffer, CaldavRequest request, List<ExchangeSession.Event> events) throws IOException {
int size = events.size();
int count = 0;
for (ExchangeSession.Event event : events) {
DavGatewayTray.debug("Retrieving event " + (++count) + "/" + size);
appendEventResponse(buffer, request, event);
}
}
protected void appendEventResponse(StringBuilder buffer, CaldavRequest request, ExchangeSession.Event event) throws IOException {
String eventPath = event.getPath().replaceAll("<", "&lt;").replaceAll(">", "&gt;");
buffer.append("<D:response>");
buffer.append("<D:href>/users/").append(session.getEmail()).append("/calendar").append(URIUtil.encodeWithinQuery(eventPath)).append("</D:href>");
buffer.append("<D:propstat>");
buffer.append("<D:prop>");
if (request.hasProperty("calendar-data")) {
String ics = event.getICS();
if (ics != null && ics.length() > 0) {
ics = ics.replaceAll("&", "&amp;").replaceAll("<", "&lt;").replaceAll(">", "&gt;");
buffer.append("<C:calendar-data xmlns:C=\"urn:ietf:params:xml:ns:caldav\"");
buffer.append(" C:content-type=\"text/calendar\" C:version=\"2.0\">");
buffer.append(ics);
buffer.append("</C:calendar-data>");
}
}
if (request.hasProperty("getetag")) {
buffer.append("<D:getetag>").append(event.getEtag()).append("</D:getetag>");
}
if (request.hasProperty("resourcetype")) {
buffer.append("<D:resourcetype/>");
}
if (request.hasProperty("displayname")) {
buffer.append("<D:displayname>").append(eventPath).append("</D:displayname>");
}
buffer.append("</D:prop>");
buffer.append("<D:status>HTTP/1.1 200 OK</D:status>");
buffer.append("</D:propstat>");
buffer.append("</D:response>");
}
public void appendCalendar(StringBuilder buffer, String principal, CaldavRequest request) throws IOException {
buffer.append("<D:response>");
buffer.append("<D:href>/users/").append(principal).append("/calendar</D:href>");
buffer.append("<D:propstat>");
buffer.append("<D:prop>");
if (request.hasProperty("resourcetype")) {
buffer.append("<D:resourcetype>");
buffer.append("<D:collection/>");
buffer.append("<C:calendar xmlns:C=\"urn:ietf:params:xml:ns:caldav\"/>");
buffer.append("</D:resourcetype>");
}
if (request.hasProperty("owner")) {
buffer.append("<D:owner>");
buffer.append("<D:href>/principals/users/").append(principal).append("</D:href>");
buffer.append("</D:owner>");
}
if (request.hasProperty("getetag")) {
buffer.append("<D:getetag>")
.append(session.getCalendarEtag())
.append("</D:getetag>");
}
if (request.hasProperty("getctag")) {
buffer.append("<CS:getctag xmlns:CS=\"http://calendarserver.org/ns/\">")
.append(base64Encode(session.getCalendarCtag()))
.append("</CS:getctag>");
}
if (request.hasProperty("displayname")) {
buffer.append("<D:displayname>calendar</D:displayname>");
}
buffer.append("</D:prop>");
buffer.append("<D:status>HTTP/1.1 200 OK</D:status>");
buffer.append("</D:propstat>");
buffer.append("</D:response>");
}
public void appendInbox(StringBuilder buffer, String principal, CaldavRequest request) throws IOException {
buffer.append("<D:response>");
buffer.append("<D:href>/users/").append(principal).append("/inbox</D:href>");
buffer.append("<D:propstat>");
buffer.append("<D:prop>");
if (request.hasProperty("resourcetype")) {
buffer.append("<D:resourcetype>");
buffer.append("<D:collection/>");
buffer.append("<C:schedule-inbox xmlns:C=\"urn:ietf:params:xml:ns:caldav\"/>");
buffer.append("</D:resourcetype>");
}
if (request.hasProperty("getctag")) {
buffer.append("<CS:getctag xmlns:CS=\"http://calendarserver.org/ns/\">0</CS:getctag>");
}
if (request.hasProperty("displayname")) {
buffer.append("<D:displayname>inbox</D:displayname>");
}
buffer.append("</D:prop>");
buffer.append("<D:status>HTTP/1.1 200 OK</D:status>");
buffer.append("</D:propstat>");
buffer.append("</D:response>");
}
public void appendOutbox(StringBuilder buffer, String principal, CaldavRequest request) throws IOException {
buffer.append("<D:response>");
buffer.append("<D:href>/users/").append(principal).append("/outbox</D:href>");
buffer.append("<D:propstat>");
buffer.append("<D:prop>");
if (request.hasProperty("resourcetype")) {
buffer.append("<D:resourcetype>");
buffer.append("<D:collection/>");
buffer.append("<C:schedule-outbox xmlns:C=\"urn:ietf:params:xml:ns:caldav\"/>");
buffer.append("</D:resourcetype>");
}
if (request.hasProperty("getctag")) {
buffer.append("<CS:getctag xmlns:CS=\"http://calendarserver.org/ns/\">0</CS:getctag>");
}
if (request.hasProperty("displayname")) {
buffer.append("<D:displayname>outbox</D:displayname>");
}
buffer.append("</D:prop>");
buffer.append("<D:status>HTTP/1.1 200 OK</D:status>");
buffer.append("</D:propstat>");
buffer.append("</D:response>");
}
public void sendGetRoot() throws IOException {
StringBuilder buffer = new StringBuilder();
buffer.append("Connected to DavMail<br/>");
buffer.append("UserName :").append(userName).append("<br/>");
buffer.append("Email :").append(session.getEmail()).append("<br/>");
sendHttpResponse(HttpStatus.SC_OK, null, "text/html;charset=UTF-8", buffer.toString(), true);
}
public void sendInbox(CaldavRequest request, String principal) throws IOException {
StringBuilder buffer = new StringBuilder();
buffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
buffer.append("<D:multistatus xmlns:D=\"DAV:\" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">");
appendInbox(buffer, principal, request);
buffer.append("</D:multistatus>");
sendHttpResponse(HttpStatus.SC_MULTI_STATUS, null, "text/xml;charset=UTF-8", buffer.toString(), true);
}
public void reportInbox() throws IOException {
// inbox is always empty
StringBuilder buffer = new StringBuilder();
buffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +
"<D:multistatus xmlns:D=\"DAV:\">");
buffer.append("</D:multistatus>");
sendHttpResponse(HttpStatus.SC_MULTI_STATUS, null, "text/xml;charset=UTF-8", buffer.toString(), true);
}
public void sendOutbox(CaldavRequest request, String principal) throws IOException {
StringBuilder buffer = new StringBuilder();
buffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
buffer.append("<D:multistatus xmlns:D=\"DAV:\" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">");
appendOutbox(buffer, principal, request);
buffer.append("</D:multistatus>");
sendHttpResponse(HttpStatus.SC_MULTI_STATUS, null, "text/xml;charset=UTF-8", buffer.toString(), true);
}
public void sendCalendar(CaldavRequest request, int depth, String principal) throws IOException {
StringBuilder buffer = new StringBuilder();
buffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
buffer.append("<D:multistatus xmlns:D=\"DAV:\" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">");
appendCalendar(buffer, principal, request);
if (depth == 1) {
DavGatewayTray.debug("Searching calendar events...");
List<ExchangeSession.Event> events = session.getAllEvents();
DavGatewayTray.debug("Found " + events.size() + " calendar events");
appendEventsResponses(buffer, request, events);
}
buffer.append("</D:multistatus>");
sendHttpResponse(HttpStatus.SC_MULTI_STATUS, null, "text/xml;charset=UTF-8", buffer.toString(), true);
}
protected String getEventFileNameFromPath(String path) {
int index = path.indexOf("/calendar/");
if (index < 0) {
return null;
} else {
return path.substring(index + "/calendar/".length());
}
}
public void reportCalendar(CaldavRequest request) throws IOException {
List<ExchangeSession.Event> events;
List<String> notFound = new ArrayList<String>();
if (request.isMultiGet()) {
events = new ArrayList<ExchangeSession.Event>();
int count = 0;
int total = request.getHrefs().size();
for (String href : request.getHrefs()) {
DavGatewayTray.debug("Report event " + (++count) + "/" + total);
try {
String eventName = getEventFileNameFromPath(href);
if (eventName == null) {
notFound.add(href);
} else {
events.add(session.getEvent(eventName));
}
} catch (HttpException e) {
notFound.add(href);
}
}
} else {
events = session.getAllEvents();
}
StringBuilder buffer = new StringBuilder();
buffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +
"<D:multistatus xmlns:D=\"DAV:\">");
appendEventsResponses(buffer, request, events);
// send not found events errors
for (String href : notFound) {
buffer.append("<D:response>");
buffer.append("<D:href>").append(URIUtil.encodeWithinQuery(href)).append("</D:href>");
buffer.append("<D:propstat>");
buffer.append("<D:status>HTTP/1.1 404 Not Found</D:status>");
buffer.append("</D:propstat>");
buffer.append("</D:response>");
}
buffer.append("</D:multistatus>");
sendHttpResponse(HttpStatus.SC_MULTI_STATUS, null, "text/xml;charset=UTF-8", buffer.toString(), true);
}
public void sendUserRoot(CaldavRequest request, int depth, String principal) throws IOException {
StringBuilder buffer = new StringBuilder();
buffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
buffer.append("<D:multistatus xmlns:D=\"DAV:\" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">");
buffer.append("<D:response>");
buffer.append("<D:href>/users/").append(principal).append("</D:href>");
buffer.append("<D:propstat>");
buffer.append("<D:prop>");
if (request.hasProperty("resourcetype")) {
buffer.append("<D:resourcetype>");
buffer.append("<D:collection/>");
buffer.append("</D:resourcetype>");
}
if (request.hasProperty("displayname")) {
buffer.append("<D:displayname>").append(principal).append("</D:displayname>");
}
buffer.append("</D:prop>");
buffer.append("<D:status>HTTP/1.1 200 OK</D:status>");
buffer.append("</D:propstat>");
buffer.append("</D:response>");
if (depth == 1) {
appendInbox(buffer, principal, request);
appendOutbox(buffer, principal, request);
appendCalendar(buffer, principal, request);
}
buffer.append("</D:multistatus>");
sendHttpResponse(HttpStatus.SC_MULTI_STATUS, null, "text/xml;charset=UTF-8", buffer.toString(), true);
}
public void sendRoot(CaldavRequest request) throws IOException {
StringBuilder buffer = new StringBuilder();
buffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
buffer.append("<D:multistatus xmlns:D=\"DAV:\" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">");
buffer.append("<D:response>");
buffer.append("<D:href>/</D:href>");
buffer.append("<D:propstat>");
buffer.append("<D:prop>");
if (request.hasProperty("principal-collection-set")) {
buffer.append("<D:principal-collection-set>");
buffer.append("<D:href>/principals/users/").append(session.getEmail()).append("</D:href>");
buffer.append("</D:principal-collection-set>");
}
if (request.hasProperty("displayname")) {
buffer.append("<D:displayname>ROOT</D:displayname>");
}
buffer.append("</D:prop>");
buffer.append("<D:status>HTTP/1.1 200 OK</D:status>");
buffer.append("</D:propstat>");
buffer.append("</D:response>");
buffer.append("</D:multistatus>");
sendHttpResponse(HttpStatus.SC_MULTI_STATUS, null, "text/xml;charset=UTF-8", buffer.toString(), true);
}
public void sendPrincipal(CaldavRequest request, String principal) throws IOException {
StringBuilder buffer = new StringBuilder();
buffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
buffer.append("<D:multistatus xmlns:D=\"DAV:\" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">");
buffer.append("<D:response>");
buffer.append("<D:href>/principals/users/").append(principal).append("</D:href>");
buffer.append("<D:propstat>");
buffer.append("<D:prop>");
if (request.hasProperty("calendar-home-set")) {
buffer.append("<C:calendar-home-set>");
buffer.append("<D:href>/users/").append(principal).append("</D:href>");
buffer.append("</C:calendar-home-set>");
}
if (request.hasProperty("calendar-user-address-set")) {
buffer.append("<C:calendar-user-address-set>");
buffer.append("<D:href>mailto:").append(principal).append("</D:href>");
buffer.append("</C:calendar-user-address-set>");
}
if (request.hasProperty("schedule-inbox-URL")) {
buffer.append("<C:schedule-inbox-URL>");
buffer.append("<D:href>/users/").append(principal).append("/inbox</D:href>");
buffer.append("</C:schedule-inbox-URL>");
}
if (request.hasProperty("schedule-outbox-URL")) {
buffer.append("<C:schedule-outbox-URL>");
buffer.append("<D:href>/users/").append(principal).append("/outbox</D:href>");
buffer.append("</C:schedule-outbox-URL>");
}
if (request.hasProperty("displayname")) {
buffer.append("<D:displayname>").append(principal).append("</D:displayname>");
}
if (request.hasProperty("resourcetype")) {
buffer.append("<D:resourcetype>");
buffer.append("<D:collection/>");
buffer.append("<D:principal/>");
buffer.append("</D:resourcetype>");
}
buffer.append("</D:prop>");
buffer.append("<D:status>HTTP/1.1 200 OK</D:status>");
buffer.append("</D:propstat>");
buffer.append("</D:response>");
buffer.append("</D:multistatus>");
sendHttpResponse(HttpStatus.SC_MULTI_STATUS, null, "text/xml;charset=UTF-8", buffer.toString(), true);
}
public void sendFreeBusy(String body) throws IOException {
HashMap<String, String> valueMap = new HashMap<String, String>();
ArrayList<String> attendees = new ArrayList<String>();
HashMap<String, String> attendeeKeyMap = new HashMap<String, String>();
ICSBufferedReader reader = new ICSBufferedReader(new StringReader(body));
String line;
String key;
while ((line = reader.readLine()) != null) {
int index = line.indexOf(':');
if (index <= 0) {
throw new IOException("Invalid request: " + body);
}
String fullkey = line.substring(0, index);
String value = line.substring(index + 1);
int semicolonIndex = fullkey.indexOf(";");
if (semicolonIndex > 0) {
key = fullkey.substring(0, semicolonIndex);
} else {
key = fullkey;
}
if ("ATTENDEE".equals(key)) {
attendees.add(value);
attendeeKeyMap.put(value, fullkey);
} else {
valueMap.put(key, value);
}
}
// get freebusy for each attendee
HashMap<String, String> freeBusyMap = new HashMap<String, String>();
for (String attendee : attendees) {
String freeBusy = session.getFreebusy(attendee, valueMap);
if (freeBusy != null) {
freeBusyMap.put(attendee, freeBusy);
}
}
if (!freeBusyMap.isEmpty()) {
StringBuilder response = new StringBuilder();
response.append("<?xml version=\"1.0\" encoding=\"utf-8\" ?>")
.append("<C:schedule-response xmlns:D=\"DAV:\" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">");
for (Map.Entry<String, String> entry : freeBusyMap.entrySet()) {
String attendee = entry.getKey();
response.append("<C:response>")
.append("<C:recipient>")
.append("<D:href>").append(attendee).append("</D:href>")
.append("</C:recipient>")
.append("<C:request-status>2.0;Success</C:request-status>")
.append("<C:calendar-data>BEGIN:VCALENDAR").append((char) 13).append((char) 10)
.append("VERSION:2.0").append((char) 13).append((char) 10)
.append("PRODID:-//Mozilla.org/NONSGML Mozilla Calendar V1.1//EN").append((char) 13).append((char) 10)
.append("METHOD:REPLY").append((char) 13).append((char) 10)
.append("BEGIN:VFREEBUSY").append((char) 13).append((char) 10)
.append("DTSTAMP:").append(valueMap.get("DTSTAMP")).append("").append((char) 13).append((char) 10)
.append("ORGANIZER:").append(valueMap.get("ORGANIZER")).append("").append((char) 13).append((char) 10)
.append("DTSTART:").append(valueMap.get("DTSTART")).append("").append((char) 13).append((char) 10)
.append("DTEND:").append(valueMap.get("DTEND")).append("").append((char) 13).append((char) 10)
.append("UID:").append(valueMap.get("UID")).append("").append((char) 13).append((char) 10)
.append(attendeeKeyMap.get(attendee)).append(":").append(attendee).append("").append((char) 13).append((char) 10);
if (entry.getValue().length() > 0) {
response.append("FREEBUSY;FBTYPE=BUSY-UNAVAILABLE:").append(entry.getValue()).append("").append((char) 13).append((char) 10);
}
response.append("END:VFREEBUSY").append((char) 13).append((char) 10)
.append("END:VCALENDAR")
.append("</C:calendar-data>")
.append("</C:response>");
}
response.append("</C:schedule-response>");
sendHttpResponse(HttpStatus.SC_OK, null, "text/xml;charset=UTF-8", response.toString(), true);
} else {
sendHttpResponse(HttpStatus.SC_NOT_FOUND, null, "text/plain", "Unknown recipient: " + valueMap.get("ATTENDEE"), true);
}
}
public void sendRedirect(Map<String, String> headers, String path) throws IOException {
StringBuilder buffer = new StringBuilder();
if (headers.get("host") != null) {
buffer.append("http://").append(headers.get("host"));
}
buffer.append(path);
Map<String, String> responseHeaders = new HashMap<String, String>();
responseHeaders.put("Location", buffer.toString());
sendHttpResponse(HttpStatus.SC_MOVED_PERMANENTLY, responseHeaders, null, null, true);
}
public void sendErr(int status, Exception e) throws IOException {
String message = e.getMessage();
if (message == null) {
message = e.toString();
}
sendErr(status, message);
}
public void sendErr(int status, String message) throws IOException {
sendHttpResponse(status, null, "text/plain;charset=UTF-8", message, false);
}
public void sendOptions() throws IOException {
HashMap<String, String> headers = new HashMap<String, String>();
headers.put("Allow", "OPTIONS, GET, PROPFIND, PUT, POST");
sendHttpResponse(HttpStatus.SC_OK, headers, null, null, true);
}
public void sendUnauthorized() throws IOException {
HashMap<String, String> headers = new HashMap<String, String>();
headers.put("WWW-Authenticate", "Basic realm=\"" + Settings.getProperty("davmail.url") + "\"");
sendHttpResponse(HttpStatus.SC_UNAUTHORIZED, headers, null, null, true);
}
public void sendHttpResponse(int status, boolean keepAlive) throws IOException {
sendHttpResponse(status, null, null, null, keepAlive);
}
public void sendHttpResponse(int status, Map<String, String> headers, String contentType, String content, boolean keepAlive) throws IOException {
sendClient("HTTP/1.1 " + status + " " + HttpStatus.getStatusText(status));
sendClient("Server: DavMail Gateway");
sendClient("DAV: 1, 2, 3, access-control, calendar-access, ticket, calendar-schedule, calendarserver-private-events");
SimpleDateFormat formatter = new java.text.SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss Z", Locale.ENGLISH);
sendClient("Date: " + formatter.format(new java.util.Date()));
if (headers != null) {
for (Map.Entry<String, String> header : headers.entrySet()) {
sendClient(header.getKey() + ": " + header.getValue());
}
}
if (contentType != null) {
sendClient("Content-Type: " + contentType);
}
closed = closed || !keepAlive;
sendClient("Connection: " + (closed ? "close" : "keep-alive"));
if (content != null && content.length() > 0) {
sendClient("Content-Length: " + content.getBytes("UTF-8").length);
} else {
sendClient("Content-Length: 0");
}
sendClient("");
if (content != null && content.length() > 0) {
// full debug trace
if (wireLogger.isDebugEnabled()) {
wireLogger.debug("> " + content);
}
sendClient(content.getBytes("UTF-8"));
}
}
/**
* Decode HTTP credentials
*
* @param authorization http authorization header value
* @throws java.io.IOException if invalid credentials
*/
protected void decodeCredentials(String authorization) throws IOException {
int index = authorization.indexOf(' ');
if (index > 0) {
String mode = authorization.substring(0, index).toLowerCase();
if (!"basic".equals(mode)) {
throw new IOException("Unsupported authorization mode: " + mode);
}
String encodedCredentials = authorization.substring(index + 1);
String decodedCredentials = base64Decode(encodedCredentials);
index = decodedCredentials.indexOf(':');
if (index > 0) {
userName = decodedCredentials.substring(0, index);
password = decodedCredentials.substring(index + 1);
} else {
throw new IOException("Invalid credentials");
}
} else {
throw new IOException("Invalid credentials");
}
}
protected static class CaldavRequest {
protected HashSet<String> properties = new HashSet<String>();
protected HashSet<String> hrefs;
protected boolean isMultiGet;
public CaldavRequest(String body) throws IOException {
// parse body
XMLStreamReader streamReader = null;
try {
XMLInputFactory inputFactory = XMLInputFactory.newInstance();
inputFactory.setProperty(XMLInputFactory.IS_COALESCING, Boolean.TRUE);
inputFactory.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES, Boolean.TRUE);
streamReader = inputFactory.createXMLStreamReader(new StringReader(body));
boolean inElement = false;
boolean inProperties = false;
String currentElement = null;
while (streamReader.hasNext()) {
int event = streamReader.next();
if (event == XMLStreamConstants.START_ELEMENT) {
inElement = true;
currentElement = streamReader.getLocalName();
if ("prop".equals(currentElement)) {
inProperties = true;
} else if ("calendar-multiget".equals(currentElement)) {
isMultiGet = true;
} else if (inProperties) {
properties.add(currentElement);
}
} else if (event == XMLStreamConstants.END_ELEMENT) {
if ("prop".equals(currentElement)) {
inProperties = false;
}
} else if (event == XMLStreamConstants.CHARACTERS && inElement) {
if ("href".equals(currentElement)) {
if (hrefs == null) {
hrefs = new HashSet<String>();
}
hrefs.add(URIUtil.decode(streamReader.getText()));
}
inElement = false;
}
}
} catch (XMLStreamException e) {
throw new IOException(e.getMessage());
} finally {
try {
if (streamReader != null) {
streamReader.close();
}
} catch (XMLStreamException e) {
DavGatewayTray.error(e);
}
}
}
public boolean hasProperty(String propertyName) {
return properties.contains(propertyName);
}
public boolean isMultiGet() {
return isMultiGet && hrefs != null;
}
public Set<String> getHrefs() {
return hrefs;
}
}
}
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