public synchronized void process() {
WoTIdentityManager identityManager = (WoTIdentityManager) mFreetalk.getIdentityManager();
long now = CurrentTimeUTC.getInMillis();
try {
MessageManager messageManager = mFreetalk.getMessageManager();
// We must tell the user to solve puzzles if he as written a message ...
if (messageManager.getOwnMessagesBy(mOwner).size() > 0
|| messageManager.getMessagesBy(mOwner).size()
> 0) { // Also check for messages which are not stored as own messages anymore.
int minimumTrusterCount = mFreetalk.getConfig().getInt(Config.MINIMUM_TRUSTER_COUNT);
// ... and if he has not received enough trust values.
if (identityManager.getReceivedTrustsCount(mOwner) < minimumTrusterCount) {
mPuzzlesToSolve = minimumTrusterCount * 2;
mNextDisplayTime = now;
mNextProcessingTime =
Long.MAX_VALUE; // Task is in display mode now, no need to proccess it anymore
storeAndCommit();
return;
}
}
mNextProcessingTime = now + PROCESSING_INTERVAL;
storeAndCommit();
return;
} catch (Exception e) {
mNextProcessingTime = now + PROCESSING_INTERVAL_SHORT;
Logger.error(this, "Error while processing an IntroduceIdentityTask", e);
}
}
public synchronized void onHideForSomeTime() {
mPuzzlesToSolve = 0;
mNextProcessingTime = CurrentTimeUTC.getInMillis() + PROCESSING_INTERVAL;
mNextDisplayTime = Long.MAX_VALUE;
storeAndCommit();
}
/**
* Retrieves the session ID from the session cookie in the given {@link ToadletContext}, checks if
* it contains a valid (existing and not expired) session and if yes, returns the {@link Session}.
*
* <p>If the session was valid, then its validity is extended by {@link MAX_SESSION_IDLE_TIME}.
*
* <p>If the session is not valid anymore, <code>null</code> is returned if the new constructor
* was used (for example by PluginRespirator). If the deprecated constructor was used, a
* RedirectException to the login URI is thrown.
*
* @throws RedirectException if login redirect URI was set
*/
public synchronized Session useSession(ToadletContext context) throws RedirectException {
UUID sessionID = getSessionID(context);
if (sessionID == null) {
if (mLogInRedirectURI == null) return null;
throw new RedirectException(mLogInRedirectURI);
}
// We must synchronize around the fetching of the time and mSessionsByID.push() because
// mSessionsByID is no sorting data structure: It's a plain
// LRUHashtable so to ensure that it stays sorted the operation "getTime(); push();" must be
// atomic.
long time = CurrentTimeUTC.getInMillis();
removeExpiredSessions(time);
Session session = mSessionsByID.get(sessionID);
if (session == null) {
if (mLogInRedirectURI == null) return null;
throw new RedirectException(mLogInRedirectURI);
}
session.updateExpiresAtTime(time);
mSessionsByID.push(session.getID(), session);
setSessionCookie(session, context);
return session;
}
protected PersistentTask(OwnIdentity myOwner) {
mID = UUID.randomUUID().toString();
mOwner = myOwner;
mNextProcessingTime = CurrentTimeUTC.getInMillis();
mNextDisplayTime = Long.MAX_VALUE;
mDeleteTime = Long.MAX_VALUE;
}
/**
* Returns true if the given {@link ToadletContext} contains a session cookie for a valid
* (existing and not expired) session.
*
* <p>In opposite to {@link getSessionUserID}, this function does NOT extend the validity of the
* session. Therefore, this function can be considered as a way of peeking for a session, to
* decide which Toadlet links should be visible.
*/
public synchronized boolean sessionExists(ToadletContext context) {
UUID sessionID = getSessionID(context);
if (sessionID == null) return false;
removeExpiredSessions(CurrentTimeUTC.getInMillis());
return mSessionsByID.containsKey(sessionID);
}
public synchronized void onPuzzleSolved() {
if (mPuzzlesToSolve > 0) --mPuzzlesToSolve;
if (mPuzzlesToSolve == 0) {
mNextProcessingTime = CurrentTimeUTC.getInMillis() + PROCESSING_INTERVAL;
mNextDisplayTime = Long.MAX_VALUE;
}
storeAndCommit();
}
/**
* Fetches the identities with positive score from WoT and stores them in the database.
*
* @throws Exception
*/
private void fetchIdentities() throws Exception {
// parseIdentities() acquires and frees the WoTIdentityManager-lock for each identity to allow
// other threads to access the identity manager while the
// parsing is in progress. Therefore, we do not take the lock for the whole execution of this
// function.
synchronized (this) {
if (mIdentityFetchInProgress) return;
long now = CurrentTimeUTC.getInMillis();
if ((now - mLastIdentityFetchTime) < MINIMAL_IDENTITY_FETCH_DELAY) return;
mIdentityFetchInProgress = true;
}
try {
Logger.normal(this, "Requesting identities with positive score from WoT ...");
SimpleFieldSet p1 = new SimpleFieldSet(true);
p1.putOverwrite("Message", "GetIdentitiesByScore");
p1.putOverwrite("Selection", "+");
p1.putOverwrite("Context", Freetalk.WOT_CONTEXT);
parseIdentities(sendFCPMessageBlocking(p1, null, "Identities").params, false);
synchronized (this) {
// We must update the fetch-time after the parsing and only if the parsing succeeded:
// If we updated before the parsing and parsing failed or took ages (the thread sometimes
// takes 2 hours to execute, don't ask me why)
// then the garbage collector would delete identities.
mLastIdentityFetchTime = CurrentTimeUTC.getInMillis();
}
} finally {
synchronized (this) {
mIdentityFetchInProgress = false;
}
}
// We usually call garbageCollectIdentities() after calling this function, it updates the cache
// already...
// if(mShortestUniqueNicknameCacheNeedsUpdate)
// updateShortestUniqueNicknameCache();
}
/**
* Creates a new session for the given user ID.
*
* <p>If a session for the given user ID already exists, it is deleted. It is not re-used to
* ensure that parallel logins with the same user account from different computers do not work.
*
* @param context The ToadletContext in which the session cookie shall be stored.
*/
public synchronized Session createSession(String userID, ToadletContext context) {
// We must synchronize around the fetching of the time and mSessionsByID.push() because
// mSessionsByID is no sorting data structure: It's a plain
// LRUHashtable so to ensure that it stays sorted the operation "getTime(); push();" must be
// atomic.
long time = CurrentTimeUTC.getInMillis();
removeExpiredSessions(time);
deleteSessionByUserID(userID);
Session session = new Session(userID, time);
mSessionsByID.push(session.getID(), session);
mSessionsByUserID.put(session.getUserID(), session);
setSessionCookie(session, context);
return session;
}
// TODO: Remove ID parameter and compute the ID from the URI
public WoTIdentity(String myID, FreenetURI myRequestURI, String myNickname) {
if (myID == null) throw new IllegalArgumentException("ID == null");
if (myID.length() == 0) throw new IllegalArgumentException("ID.length() == 0");
if (myRequestURI == null) throw new IllegalArgumentException("RequestURI == null");
if (myNickname == null) throw new IllegalArgumentException("Nickname == null");
try {
validateNickname(myNickname);
} catch (InvalidParameterException e) {
throw new IllegalArgumentException(e);
}
mID = myID;
mRequestURI = myRequestURI;
mNickname = myNickname;
mLastReceivedFromWoT = CurrentTimeUTC.getInMillis();
IfNotEquals.thenThrow(
IdentityID.construct(mID), IdentityID.constructFromURI(mRequestURI), "myID");
}
/** Debug function which checks whether the session LRU queue is in order; */
private synchronized void verifyQueueOrder() {
long previousTime = 0;
Enumeration<Session> sessions = mSessionsByID.values();
while (sessions.hasMoreElements()) {
Session session = sessions.nextElement();
if (session.getExpirationTime() < previousTime) {
long sessionAge =
(CurrentTimeUTC.getInMillis() - session.getExpirationTime()) / (60 * 60 * 1000);
Logger.error(
this,
"Session LRU queue out of order! Found session which is "
+ sessionAge
+ " hour old: "
+ session);
Logger.error(this, "Deleting all sessions...");
mSessionsByID.clear();
mSessionsByUserID.clear();
return;
}
}
}
@SuppressWarnings("unchecked")
private void parseIdentities(SimpleFieldSet params, boolean bOwnIdentities) {
if (bOwnIdentities) Logger.normal(this, "Parsing received own identities...");
else Logger.normal(this, "Parsing received identities...");
int idx;
int ignoredCount = 0;
int newCount = 0;
for (idx = 0; ; idx++) {
String identityID = params.get("Identity" + idx);
if (identityID == null
|| identityID.equals("")) /* TODO: Figure out whether the second condition is necessary */
break;
String requestURI = params.get("RequestURI" + idx);
String insertURI = bOwnIdentities ? params.get("InsertURI" + idx) : null;
String nickname = params.get("Nickname" + idx);
if (nickname == null || nickname.length() == 0) {
// If an identity publishes an invalid nickname in one of its first WoT inserts then WoT
// will return an empty
// nickname for that identity until a new XML was published with a valid nickname. We ignore
// the identity until
// then to prevent confusing error logs.
// TODO: Maybe handle this in WoT. Would require checks in many places though.
continue;
}
synchronized (this) {
/* We lock here and not during the whole function to allow other threads to execute */
Query q = db.query(); // TODO: Encapsulate the query in a function...
q.constrain(WoTIdentity.class);
q.descend("mID").constrain(identityID);
ObjectSet<WoTIdentity> result = q.execute();
WoTIdentity id = null;
if (result.size() == 0) {
try {
importIdentity(bOwnIdentities, identityID, requestURI, insertURI, nickname);
++newCount;
} catch (Exception e) {
Logger.error(this, "Importing a new identity failed.", e);
}
} else {
Logger.debug(this, "Not importing already existing identity " + requestURI);
++ignoredCount;
assert (result.size() == 1);
id = result.next();
id.initializeTransient(mFreetalk);
if (bOwnIdentities != (id instanceof WoTOwnIdentity)) {
// The type of the identity changed so we need to delete and re-import it.
try {
Logger.normal(this, "Identity type changed, replacing it: " + id);
// We MUST NOT take the following locks because deleteIdentity does other locks
// (MessageManager/TaskManager) which must happen before...
// synchronized(id)
// synchronized(db.lock())
deleteIdentity(id, mFreetalk.getMessageManager(), mFreetalk.getTaskManager());
importIdentity(bOwnIdentities, identityID, requestURI, insertURI, nickname);
} catch (Exception e) {
Logger.error(this, "Replacing a WoTIdentity with WoTOwnIdentity failed.", e);
}
} else { // Normal case: Update the last received time of the idefnt
synchronized (id) {
synchronized (db.lock()) {
try {
// TODO: The thread sometimes takes hours to parse the identities and I don't know
// why.
// So right now its better to re-query the time for each identity.
id.setLastReceivedFromWoT(CurrentTimeUTC.getInMillis());
id.checkedCommit(this);
} catch (Exception e) {
Persistent.checkedRollback(db, this, e);
}
}
}
}
}
}
Thread.yield();
}
Logger.normal(
this,
"parseIdentities(bOwnIdentities=="
+ bOwnIdentities
+ " received "
+ idx
+ " identities. Ignored "
+ ignoredCount
+ "; New: "
+ newCount);
}
/** Makes the list of Identities known by the tree owner. */
private void makeKnownIdentitiesList() {
String nickFilter = mRequest.getPartAsStringFailsafe("nickfilter", 100).trim();
String sortBy =
mRequest.isPartSet("sortby")
? mRequest.getPartAsStringFailsafe("sortby", 100).trim()
: "Nickname";
String sortType =
mRequest.isPartSet("sorttype")
? mRequest.getPartAsStringFailsafe("sorttype", 100).trim()
: "Ascending";
int page =
mRequest.isPartSet("page")
? Integer.parseInt(
mRequest.getPartAsStringFailsafe(
"page", Integer.toString(Integer.MAX_VALUE).length()))
: 0;
page = page - 1; // What we get passed is the user-friendly page number counting from 1, not 0.
page = Math.max(0, page); // In case no page part was set, it would be -1
HTMLNode knownIdentitiesBox =
addContentBox(l10n().getString("KnownIdentitiesPage.KnownIdentities.Header"));
knownIdentitiesBox =
pr.addFormChild(knownIdentitiesBox, uri.toString(), "Filters").addChild("p");
knownIdentitiesBox.addChild(
"input",
new String[] {"type", "name", "value"},
new String[] {"hidden", "page", Integer.toString(page + 1)});
InfoboxNode filtersBoxNode =
getContentBox(l10n().getString("KnownIdentitiesPage.FiltersAndSorting.Header"));
{ // Filters box
knownIdentitiesBox.addChild(filtersBoxNode.outer);
HTMLNode filtersBox = filtersBoxNode.content;
filtersBox.addChild(
"#",
l10n().getString("KnownIdentitiesPage.FiltersAndSorting.ShowOnlyNicksContaining")
+ " : ");
filtersBox.addChild(
"input",
new String[] {"type", "size", "name", "value"},
new String[] {"text", "15", "nickfilter", nickFilter});
filtersBox.addChild(
"#",
" " + l10n().getString("KnownIdentitiesPage.FiltersAndSorting.SortIdentitiesBy") + " : ");
HTMLNode option =
filtersBox.addChild(
"select", new String[] {"name", "id"}, new String[] {"sortby", "sortby"});
TreeMap<String, String> options = new TreeMap<String, String>();
options.put(
SortBy.Edition.toString(),
l10n().getString("KnownIdentitiesPage.FiltersAndSorting.SortIdentitiesBy.Edition"));
options.put(
SortBy.Nickname.toString(),
l10n().getString("KnownIdentitiesPage.FiltersAndSorting.SortIdentitiesBy.Nickname"));
options.put(
SortBy.Score.toString(),
l10n().getString("KnownIdentitiesPage.FiltersAndSorting.SortIdentitiesBy.Score"));
options.put(
SortBy.LocalTrust.toString(),
l10n().getString("KnownIdentitiesPage.FiltersAndSorting.SortIdentitiesBy.LocalTrust"));
for (String e : options.keySet()) {
HTMLNode newOption = option.addChild("option", "value", e, options.get(e));
if (e.equals(sortBy)) {
newOption.addAttribute("selected", "selected");
}
}
option =
filtersBox.addChild(
"select", new String[] {"name", "id"}, new String[] {"sorttype", "sorttype"});
options = new TreeMap<String, String>();
options.put(
"Ascending",
l10n().getString("KnownIdentitiesPage.FiltersAndSorting.SortIdentitiesBy.Ascending"));
options.put(
"Descending",
l10n().getString("KnownIdentitiesPage.FiltersAndSorting.SortIdentitiesBy.Descending"));
for (String e : options.keySet()) {
HTMLNode newOption = option.addChild("option", "value", e, options.get(e));
if (e.equals(sortType)) {
newOption.addAttribute("selected", "selected");
}
}
filtersBox.addChild(
"input",
new String[] {"type", "value"},
new String[] {
"submit",
l10n().getString("KnownIdentitiesPage.FiltersAndSorting.SortIdentitiesBy.SubmitButton")
});
}
// Display the list of known identities
HTMLNode identitiesTable = knownIdentitiesBox.addChild("table", "border", "0");
identitiesTable.addChild(getKnownIdentitiesListTableHeader());
WebOfTrust.SortOrder sortInstruction = WebOfTrust.SortOrder.valueOf("By" + sortBy + sortType);
synchronized (mWebOfTrust) {
long currentTime = CurrentTimeUTC.getInMillis();
int indexOfFirstIdentity = page * IDENTITIES_PER_PAGE;
// Re-query it instead of using mLoggedInOwnIdentity because mLoggedInOwnIdentity is a
// clone() and thus will not work with database queries on the WebOfTrust.
// TODO: Performance: This can be removed once the TODO at
// WebPageImpl.getLoggedInOwnIdentityFromHTTPSession() of not cloning the
// OwnIdentity has been been resolved.
final OwnIdentity ownId;
try {
ownId = mWebOfTrust.getOwnIdentityByID(mLoggedInOwnIdentity.getID());
} catch (UnknownIdentityException e) {
new ErrorPage(mToadlet, mRequest, mContext, e).addToPage(this);
return;
}
ObjectSet<Identity> allIdentities =
mWebOfTrust.getAllIdentitiesFilteredAndSorted(ownId, nickFilter, sortInstruction);
Iterator<Identity> identities;
try {
identities = allIdentities.listIterator(indexOfFirstIdentity);
} catch (IndexOutOfBoundsException e) {
// The user supplied a higher page index than there are pages. This can happen when the
// user changes the search filters while not being on the first page.
// We fall back to displaying the last page.
// Notice: We intentionally do not prevent listIterator() from throwing by checking
// the index for validity before calling listIterator(). This is because we would need
// to call allIdentities.size() to check the index. This would force the database to
// compute the full result set even though we only need the results up to the current
// page if we are not on the last page.
page = getPageCount(allIdentities.size()) - 1;
indexOfFirstIdentity = page * IDENTITIES_PER_PAGE;
// TODO: Performance: Don't re-query this from the database once the issue which caused
// this workaround is fixed: https://bugs.freenetproject.org/view.php?id=6646
allIdentities =
mWebOfTrust.getAllIdentitiesFilteredAndSorted(ownId, nickFilter, sortInstruction);
identities = allIdentities.listIterator(indexOfFirstIdentity);
}
for (int displayed = 0;
displayed < IDENTITIES_PER_PAGE && identities.hasNext();
++displayed) {
final Identity id = identities.next();
if (id == ownId) continue;
HTMLNode row = identitiesTable.addChild("tr");
// NickName
HTMLNode nameLink =
row.addChild(
"td",
new String[] {"title", "style"},
new String[] {id.getRequestURI().toString(), "cursor: help;"})
.addChild("a", "href", IdentityPage.getURI(mWebInterface, id.getID()).toString());
String nickName = id.getNickname();
if (nickName != null) {
nameLink.addChild("#", nickName + "@" + id.getID().substring(0, 5) + "...");
} else
nameLink
.addChild("span", "class", "alert-error")
.addChild(
"#",
l10n()
.getString(
"KnownIdentitiesPage.KnownIdentities.Table.NicknameNotDownloadedYet"));
// Added date
row.addChild(
"td",
CommonWebUtils.formatTimeDelta(currentTime - id.getAddedDate().getTime(), l10n()));
// Last fetched date
Date lastFetched = id.getLastFetchedDate();
if (!lastFetched.equals(new Date(0)))
row.addChild(
"td", CommonWebUtils.formatTimeDelta(currentTime - lastFetched.getTime(), l10n()));
else row.addChild("td", l10n().getString("Common.Never"));
// Publish TrustList
row.addChild(
"td",
new String[] {"align"},
new String[] {"center"},
id.doesPublishTrustList()
? l10n().getString("Common.Yes")
: l10n().getString("Common.No"));
// Score
try {
final Score score = mWebOfTrust.getScore(ownId, id);
final int scoreValue = score.getScore();
final int rank = score.getRank();
row.addChild(
"td",
new String[] {"align", "style"},
new String[] {
"center", "background-color:" + KnownIdentitiesPage.getTrustColor(scoreValue) + ";"
},
Integer.toString(scoreValue)
+ " ("
+ (rank != Integer.MAX_VALUE
? rank
: l10n().getString("KnownIdentitiesPage.KnownIdentities.Table.InfiniteRank"))
+ ")");
} catch (NotInTrustTreeException e) {
// This only happen with identities added manually by the user
row.addChild("td", l10n().getString("KnownIdentitiesPage.KnownIdentities.Table.NoScore"));
}
// Own Trust
row.addChild(getReceivedTrustCell(ownId, id));
// Checkbox
row.addChild(getSetTrustCell(id));
// Nb Trusters
// TODO: Do a direct link to the received-trusts part of the linked page
HTMLNode trustersCell = row.addChild("td", new String[] {"align"}, new String[] {"center"});
trustersCell.addChild(
new HTMLNode(
"a",
"href",
IdentityPage.getURI(mWebInterface, id.getID()).toString(),
Long.toString(mWebOfTrust.getReceivedTrusts(id).size())));
// Nb Trustees
// TODO: Do a direct link to the given-trusts part of the linked page
HTMLNode trusteesCell = row.addChild("td", new String[] {"align"}, new String[] {"center"});
trusteesCell.addChild(
new HTMLNode(
"a",
"href",
IdentityPage.getURI(mWebInterface, id.getID()).toString(),
Long.toString(mWebOfTrust.getGivenTrusts(id).size())));
// TODO: Show in advanced mode only once someone finally fixes the "Switch to advanced mode"
// link on FProxy to work on ALL pages.
row.addChild("td", "align", "center", Long.toString(id.getEdition()));
row.addChild("td", "align", "center", Long.toString(id.getLatestEditionHint()));
}
identitiesTable.addChild(getKnownIdentitiesListTableHeader());
knownIdentitiesBox.addChild(getKnownIdentitiesListPageLinks(page, allIdentities.size()));
}
}