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CaldavConnection refactoring : replace indexOf with actual XML parsing of Caldav requests 

git-svn-id: http://svn.code.sf.net/p/davmail/code/trunk@232 3d1905a2-6b24-0410-a738-b14d5a86fcbd
This commit is contained in:
mguessan 2008-12-17 15:22:37 +00:00
parent 1ca2da38f0
commit 79f8800538
1 changed files with 144 additions and 99 deletions
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243
src/java/davmail/caldav/CaldavConnection.java
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@ -7,7 +7,6 @@ import davmail.exchange.ExchangeSessionFactory;
import davmail.tray.DavGatewayTray;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.util.URIUtil;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
@ -17,8 +16,8 @@ import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import java.net.Socket;
import java.net.SocketTimeoutException;
import java.net.SocketException;
import java.net.SocketTimeoutException;
import java.text.SimpleDateFormat;
import java.util.*;
@ -61,10 +60,7 @@ public class CaldavConnection extends AbstractConnection {
if (actualSize < 0) {
throw new IOException("End of stream reached reading content");
}
String result = new String(buffer, 0, actualSize);
// TODO : create a wire debug level
// DavGatewayTray.debug("< " + result);
return result;
return new String(buffer, 0, actualSize);
}
}
@ -111,6 +107,8 @@ public class CaldavConnection extends AbstractConnection {
decodeCredentials(headers.get("authorization"));
// authenticate only once
if (session == null) {
// first check network connectivity
ExchangeSessionFactory.checkConfig();
session = ExchangeSessionFactory.getInstance(userName, password);
}
handleRequest(command, path, headers, content);
@ -157,6 +155,7 @@ public class CaldavConnection extends AbstractConnection {
if ("OPTIONS".equals(command)) {
sendOptions();
} else if ("PROPFIND".equals(command) && "/user/".equals(path)) {
CaldavRequest request = new CaldavRequest(body);
StringBuilder buffer = new StringBuilder();
buffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
buffer.append("<D:multistatus xmlns:D=\"DAV:\" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">\n");
@ -164,21 +163,29 @@ public class CaldavConnection extends AbstractConnection {
buffer.append(" <D:href>/user</D:href>\n");
buffer.append(" <D:propstat>\n");
buffer.append(" <D:prop>\n");
buffer.append(" <C:calendar-home-set>\n");
buffer.append(" <D:href>/calendar</D:href>\n");
buffer.append(" </C:calendar-home-set>");
if (request.hasProperty("calendar-home-set")) {
buffer.append(" <C:calendar-home-set>\n");
buffer.append(" <D:href>/calendar</D:href>\n");
buffer.append(" </C:calendar-home-set>");
}
buffer.append(" <C:calendar-user-address-set>\n");
buffer.append(" <D:href>mailto:").append(session.getEmail()).append("</D:href>\n");
buffer.append(" </C:calendar-user-address-set>");
if (request.hasProperty("calendar-user-address-set")) {
buffer.append(" <C:calendar-user-address-set>\n");
buffer.append(" <D:href>mailto:").append(session.getEmail()).append("</D:href>\n");
buffer.append(" </C:calendar-user-address-set>");
}
buffer.append(" <C:schedule-inbox-URL>\n");
buffer.append(" <D:href>/inbox</D:href>\n");
buffer.append(" </C:schedule-inbox-URL>");
if (request.hasProperty("schedule-inbox-URL")) {
buffer.append(" <C:schedule-inbox-URL>\n");
buffer.append(" <D:href>/inbox</D:href>\n");
buffer.append(" </C:schedule-inbox-URL>");
}
buffer.append(" <C:schedule-outbox-URL>\n");
buffer.append(" <D:href>/outbox</D:href>\n");
buffer.append(" </C:schedule-outbox-URL>");
if (request.hasProperty("schedule-outbox-URL")) {
buffer.append(" <C:schedule-outbox-URL>\n");
buffer.append(" <D:href>/outbox</D:href>\n");
buffer.append(" </C:schedule-outbox-URL>");
}
buffer.append(" </D:prop>\n");
buffer.append(" <D:status>HTTP/1.1 200 OK</D:status>\n");
@ -186,87 +193,56 @@ public class CaldavConnection extends AbstractConnection {
buffer.append(" </D:response>\n");
buffer.append("</D:multistatus>\n");
sendHttpResponse(HttpStatus.SC_MULTI_STATUS, null, "text/xml;charset=UTF-8", buffer.toString(), true);
} else if ("PROPFIND".equals(command) && "/calendar/".equals(path)) {
if (depth != 0 || body == null) {
throw new IOException("Unsupported operation: " + command + " " + path);
}
try {
StringBuilder buffer = new StringBuilder();
buffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
buffer.append("<D:multistatus xmlns:D=\"DAV:\" xmlns:CS=\"http://calendarserver.org/ns/\">\n");
buffer.append(" <D:response>\n");
buffer.append(" <D:href>/calendar</D:href>\n");
buffer.append(" <D:propstat>\n");
buffer.append(" <D:prop>\n");
// TODO : parse request
if (body.indexOf("resourcetype") >= 0) {
buffer.append(" <D:resourcetype>\n");
buffer.append(" <D:collection/>\n");
buffer.append(" <C:calendar xmlns:C=\"urn:ietf:params:xml:ns:caldav\"/>\n");
buffer.append(" </D:resourcetype>\n");
}
if (body.indexOf("owner") >= 0) {
buffer.append(" <D:owner>\n");
buffer.append(" <D:href>/user</D:href>\n");
buffer.append(" </D:owner>\n");
}
if (body.indexOf("getctag") >= 0) {
buffer.append(" <CS:getctag>")
.append(base64Encode(session.getCalendarEtag()))
.append("</CS:getctag>\n");
}
buffer.append(" </D:prop>\n");
buffer.append(" <D:status>HTTP/1.1 200 OK</D:status>\n");
buffer.append(" </D:propstat>\n");
buffer.append(" </D:response>\n");
buffer.append("</D:multistatus>\n");
HashMap<String, String> responseHeaders = new HashMap<String, String>();
sendHttpResponse(HttpStatus.SC_MULTI_STATUS, responseHeaders, "text/xml;charset=UTF-8", buffer.toString(), true);
} else if ("PROPFIND".equals(command) && "/calendar/".equals(path) && depth == 0 && body != null) {
CaldavRequest request = new CaldavRequest(body);
} catch (IOException e) {
sendUnauthorized();
}
StringBuilder buffer = new StringBuilder();
buffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
buffer.append("<D:multistatus xmlns:D=\"DAV:\" xmlns:CS=\"http://calendarserver.org/ns/\">\n");
buffer.append(" <D:response>\n");
buffer.append(" <D:href>/calendar</D:href>\n");
buffer.append(" <D:propstat>\n");
buffer.append(" <D:prop>\n");
} else if ("REPORT".equals(command)) {
if (!"/calendar/".equals(path) || depth != 1 || body == null) {
throw new IOException("Unsupported operation: " + command + " " + path);
if (request.hasProperty("resourcetype")) {
buffer.append(" <D:resourcetype>\n");
buffer.append(" <D:collection/>\n");
buffer.append(" <C:calendar xmlns:C=\"urn:ietf:params:xml:ns:caldav\"/>\n");
buffer.append(" </D:resourcetype>\n");
}
HashSet<String> properties = new HashSet<String>();
// TODO : parse body
if (body.indexOf("D:getetag") >= 0) {
properties.add("getetag");
if (request.hasProperty("owner")) {
buffer.append(" <D:owner>\n");
buffer.append(" <D:href>/user</D:href>\n");
buffer.append(" </D:owner>\n");
}
if (body.indexOf("calendar-data") >= 0) {
properties.add("calendar-data");
if (request.hasProperty("getctag")) {
buffer.append(" <CS:getctag>")
.append(base64Encode(session.getCalendarEtag()))
.append("</CS:getctag>\n");
}
buffer.append(" </D:prop>\n");
buffer.append(" <D:status>HTTP/1.1 200 OK</D:status>\n");
buffer.append(" </D:propstat>\n");
buffer.append(" </D:response>\n");
buffer.append("</D:multistatus>\n");
HashMap<String, String> responseHeaders = new HashMap<String, String>();
sendHttpResponse(HttpStatus.SC_MULTI_STATUS, responseHeaders, "text/xml;charset=UTF-8", buffer.toString(), true);
} else if ("REPORT".equals(command) && "/calendar/".equals(path) && depth == 1 && body != null) {
CaldavRequest request = new CaldavRequest(body);
List<ExchangeSession.Event> events;
List<String> notFound = new ArrayList<String>();
if (body.indexOf("calendar-multiget") >= 0) {
if (request.isMultiGet()) {
events = new ArrayList<ExchangeSession.Event>();
try {
XMLInputFactory inputFactory = XMLInputFactory.newInstance();
inputFactory.setProperty(XMLInputFactory.IS_COALESCING, Boolean.TRUE);
inputFactory.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES, Boolean.TRUE);
XMLStreamReader reader = inputFactory.createXMLStreamReader(new StringReader(body));
boolean inHref = false;
while (reader.hasNext()) {
int event = reader.next();
if (event == XMLStreamConstants.START_ELEMENT && "href".equals(reader.getLocalName())) {
inHref = true;
} else if (event == XMLStreamConstants.CHARACTERS && inHref) {
try {
events.add(session.getEvent(reader.getText().substring("/calendar/".length())));
} catch (HttpException e) {
String href = reader.getText();
notFound.add(href);
}
inHref = false;
}
for (String href : request.getHrefs()) {
try {
events.add(session.getEvent(href.substring("/calendar/".length())));
} catch (HttpException e) {
notFound.add(href);
}
} catch (XMLStreamException e) {
throw new IOException(e.getMessage());
}
} else {
events = session.getAllEvents();
@ -282,7 +258,7 @@ public class CaldavConnection extends AbstractConnection {
buffer.append(" <D:href>/calendar").append(eventPath).append("</D:href>\n");
buffer.append(" <D:propstat>\n");
buffer.append(" <D:prop>\n");
if (properties.contains("calendar-data")) {
if (request.hasProperty("calendar-data")) {
String ics = event.getICS();
if (ics != null && ics.length() > 0) {
ics = ics.replaceAll("&", "&amp;").replaceAll("<", "&lt;").replaceAll(">", "&gt;");
@ -292,7 +268,7 @@ public class CaldavConnection extends AbstractConnection {
buffer.append("</C:calendar-data>\n");
}
}
if (properties.contains("getetag")) {
if (request.hasProperty("getetag")) {
buffer.append(" <D:getetag>").append(event.getEtag()).append("</D:getetag>\n");
}
buffer.append(" </D:prop>\n");
@ -301,7 +277,7 @@ public class CaldavConnection extends AbstractConnection {
buffer.append(" </D:response>\n");
}
// TODO : handle not found
// send not found events errors
for (String href : notFound) {
buffer.append("<D:response>\n");
buffer.append(" <D:href>").append(href).append("</D:href>\n");
@ -319,21 +295,21 @@ public class CaldavConnection extends AbstractConnection {
sendHttpResponse(status, true);
} else if ("POST".equals(command) && path.startsWith("/outbox")) {
Map<String,String> valueMap = new HashMap<String,String>();
Map<String,String> keyMap = new HashMap<String,String>();
Map<String, String> valueMap = new HashMap<String, String>();
Map<String, String> keyMap = new HashMap<String, String>();
BufferedReader reader = new BufferedReader(new StringReader(body));
String line;
String key = null;
while ((line = reader.readLine()) != null) {
if (line.startsWith(" ") && "ATTENDEE".equals(key)) {
valueMap.put(key, valueMap.get(key)+line.substring(1));
valueMap.put(key, valueMap.get(key) + line.substring(1));
} else {
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);
String value = line.substring(index + 1);
int semicolonIndex = fullkey.indexOf(";");
if (semicolonIndex > 0) {
key = fullkey.substring(0, semicolonIndex);
@ -349,7 +325,7 @@ public class CaldavConnection extends AbstractConnection {
" xmlns:C=\"urn:ietf:params:xml:ns:caldav\">\n" +
" <C:response>\n" +
" <C:recipient>\n" +
" <D:href>"+valueMap.get("ATTENDEE")+"</D:href>\n" +
" <D:href>" + valueMap.get("ATTENDEE") + "</D:href>\n" +
" </C:recipient>\n" +
" <C:request-status>2.0;Success</C:request-status>\n" +
" <C:calendar-data>BEGIN:VCALENDAR\n" +
@ -362,7 +338,7 @@ public class CaldavConnection extends AbstractConnection {
"DTSTART:" + valueMap.get("DTSTART") + "\n" +
"DTEND:" + valueMap.get("DTEND") + "\n" +
"UID:" + valueMap.get("UID") + "\n" +
keyMap.get("ATTENDEE")+";" + valueMap.get("ATTENDEE") + "\n" +
keyMap.get("ATTENDEE") + ";" + valueMap.get("ATTENDEE") + "\n" +
"FREEBUSY;FBTYPE=BUSY-UNAVAILABLE:" + session.getFreebusy(valueMap) + "\n" +
"END:VFREEBUSY\n" +
"END:VCALENDAR" +
@ -375,6 +351,7 @@ public class CaldavConnection extends AbstractConnection {
int status = session.deleteEvent(path.substring("/calendar/".length()));
sendHttpResponse(status, true);
} else {
DavGatewayTray.error("Unsupported command: " + command + " " + path + "\n" + body);
sendErr(HttpStatus.SC_BAD_REQUEST, "Unsupported command: " + command);
}
@ -416,7 +393,7 @@ public class CaldavConnection extends AbstractConnection {
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()) {
for (Map.Entry<String, String> header : headers.entrySet()) {
sendClient(header.getKey() + ": " + header.getValue());
}
}
@ -464,5 +441,73 @@ public class CaldavConnection extends AbstractConnection {
}
protected 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(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;
}
}
}