mirror of https://github.com/etesync/android
rfc2822
10 years ago
parent
75e5a59948
commit
2c79ae20e5
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package at.bitfire.davdroid.syncadapter;
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import java.io.IOException;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.util.LinkedList;
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import java.util.List;
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import ch.boye.httpclientandroidlib.HttpException;
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import ch.boye.httpclientandroidlib.impl.client.CloseableHttpClient;
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import android.content.Context;
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import android.util.Log;
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import at.bitfire.davdroid.R;
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import at.bitfire.davdroid.webdav.DavException;
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import at.bitfire.davdroid.webdav.DavHttpClient;
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import at.bitfire.davdroid.webdav.DavIncapableException;
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import at.bitfire.davdroid.webdav.WebDavResource;
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import at.bitfire.davdroid.webdav.HttpPropfind.Mode;
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public class DavResourceFinder {
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private final static String TAG = "davdroid.DavResourceFinder";
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public static void findResources(Context context, ServerInfo serverInfo) throws URISyntaxException, DavException, HttpException, IOException {
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// disable compression and enable network logging for debugging purposes
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CloseableHttpClient httpClient = DavHttpClient.create(true, true);
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WebDavResource base = new WebDavResource(httpClient, new URI(serverInfo.getProvidedURL()), serverInfo.getUserName(),
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serverInfo.getPassword(), serverInfo.isAuthPreemptive());
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// CardDAV
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WebDavResource principal = getCurrentUserPrincipal(base, "carddav");
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if (principal != null) {
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serverInfo.setCardDAV(true);
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principal.propfind(Mode.HOME_SETS);
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String pathAddressBooks = principal.getAddressbookHomeSet();
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if (pathAddressBooks != null) {
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Log.i(TAG, "Found address book home set: " + pathAddressBooks);
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WebDavResource homeSetAddressBooks = new WebDavResource(principal, pathAddressBooks);
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if (checkCapabilities(homeSetAddressBooks, "addressbook")) {
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homeSetAddressBooks.propfind(Mode.MEMBERS_COLLECTIONS);
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List<ServerInfo.ResourceInfo> addressBooks = new LinkedList<ServerInfo.ResourceInfo>();
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if (homeSetAddressBooks.getMembers() != null)
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for (WebDavResource resource : homeSetAddressBooks.getMembers())
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if (resource.isAddressBook()) {
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Log.i(TAG, "Found address book: " + resource.getLocation().getRawPath());
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ServerInfo.ResourceInfo info = new ServerInfo.ResourceInfo(
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ServerInfo.ResourceInfo.Type.ADDRESS_BOOK,
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resource.isReadOnly(),
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resource.getLocation().toASCIIString(),
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resource.getDisplayName(),
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resource.getDescription(), resource.getColor()
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);
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addressBooks.add(info);
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}
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serverInfo.setAddressBooks(addressBooks);
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} else
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Log.w(TAG, "Found address-book home set, but it doesn't advertise CardDAV support");
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}
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}
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// CalDAV
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principal = getCurrentUserPrincipal(base, "caldav");
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if (principal != null) {
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serverInfo.setCalDAV(true);
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principal.propfind(Mode.HOME_SETS);
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String pathCalendars = principal.getCalendarHomeSet();
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if (pathCalendars != null) {
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Log.i(TAG, "Found calendar home set: " + pathCalendars);
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WebDavResource homeSetCalendars = new WebDavResource(principal, pathCalendars);
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if (checkCapabilities(homeSetCalendars, "calendar-access")) {
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homeSetCalendars.propfind(Mode.MEMBERS_COLLECTIONS);
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List<ServerInfo.ResourceInfo> calendars = new LinkedList<ServerInfo.ResourceInfo>();
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if (homeSetCalendars.getMembers() != null)
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for (WebDavResource resource : homeSetCalendars.getMembers())
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if (resource.isCalendar()) {
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Log.i(TAG, "Found calendar: " + resource.getLocation().getRawPath());
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if (resource.getSupportedComponents() != null) {
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// CALDAV:supported-calendar-component-set available
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boolean supportsEvents = false;
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for (String supportedComponent : resource.getSupportedComponents())
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if (supportedComponent.equalsIgnoreCase("VEVENT"))
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supportsEvents = true;
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if (!supportsEvents) // ignore collections without VEVENT support
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continue;
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}
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ServerInfo.ResourceInfo info = new ServerInfo.ResourceInfo(
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ServerInfo.ResourceInfo.Type.CALENDAR,
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resource.isReadOnly(),
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resource.getLocation().toASCIIString(),
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resource.getDisplayName(),
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resource.getDescription(), resource.getColor()
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);
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info.setTimezone(resource.getTimezone());
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calendars.add(info);
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}
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serverInfo.setCalendars(calendars);
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} else
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Log.w(TAG, "Found calendar home set, but it doesn't advertise CalDAV support");
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}
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}
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if (!serverInfo.isCalDAV() && !serverInfo.isCardDAV())
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throw new DavIncapableException(context.getString(R.string.neither_caldav_nor_carddav));
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}
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/**
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* Detects the current-user-principal for a given WebDavResource. At first, /.well-known/ is tried. Only
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* if no current-user-principal can be detected for the .well-known location, the given location of the resource
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* is tried.
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* @param resource Location that will be queried
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* @param serviceName Well-known service name ("carddav", "caldav")
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* @return WebDavResource of current-user-principal for the given service, or null if it can't be found
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*/
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private static WebDavResource getCurrentUserPrincipal(WebDavResource resource, String serviceName) throws IOException, HttpException, DavException {
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// look for well-known service (RFC 5785)
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try {
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WebDavResource wellKnown = new WebDavResource(resource, "/.well-known/" + serviceName);
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wellKnown.propfind(Mode.CURRENT_USER_PRINCIPAL);
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if (wellKnown.getCurrentUserPrincipal() != null)
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return new WebDavResource(wellKnown, wellKnown.getCurrentUserPrincipal());
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} catch (HttpException e) {
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Log.d(TAG, "Well-known service detection failed with HTTP error", e);
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} catch (DavException e) {
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Log.d(TAG, "Well-known service detection failed at DAV level", e);
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}
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// fall back to user-given initial context path
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resource.propfind(Mode.CURRENT_USER_PRINCIPAL);
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if (resource.getCurrentUserPrincipal() != null)
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return new WebDavResource(resource, resource.getCurrentUserPrincipal());
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return null;
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}
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private static boolean checkCapabilities(WebDavResource resource, String davCapability) throws IOException {
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// check for necessary capabilities
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try {
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resource.options();
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if (resource.supportsDAV(davCapability) &&
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resource.supportsMethod("PROPFIND") &&
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resource.supportsMethod("GET") &&
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resource.supportsMethod("REPORT") &&
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resource.supportsMethod("PUT") &&
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resource.supportsMethod("DELETE"))
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return true;
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} catch(HttpException e) {
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// for instance, 405 Method not allowed
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}
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return false;
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}
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}
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@ -0,0 +1,37 @@
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package at.bitfire.davdroid.syncadapter;
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import java.util.List;
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import android.test.InstrumentationTestCase;
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import at.bitfire.davdroid.syncadapter.ServerInfo.ResourceInfo;
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import at.bitfire.davdroid.test.Constants;
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public class DavResourceFinderTest extends InstrumentationTestCase {
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public void testFindResources() throws Exception {
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ServerInfo info = new ServerInfo(Constants.ROBOHYDRA_BASE, "test", "test", true);
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DavResourceFinder.findResources(getInstrumentation().getContext(), info);
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// CardDAV
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assertTrue(info.isCardDAV());
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List<ResourceInfo> collections = info.getAddressBooks();
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assertEquals(1, collections.size());
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assertEquals("Default Address Book", collections.get(0).getDescription());
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// CalDAV
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assertTrue(info.isCalDAV());
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collections = info.getCalendars();
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assertEquals(2, collections.size());
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ResourceInfo resource = collections.get(0);
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assertEquals("Private Calendar", resource.getTitle());
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assertEquals("This is my private calendar.", resource.getDescription());
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assertFalse(resource.isReadOnly());
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resource = collections.get(1);
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assertEquals("Work Calendar", resource.getTitle());
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assertTrue(resource.isReadOnly());
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}
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}
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