mirror of
https://github.com/moparisthebest/mail
synced 2024-12-22 15:28:49 -05:00
change api of emaildao to load bodies on demand
This commit is contained in:
parent
ed63c6b436
commit
0e9f68abee
@ -11,7 +11,7 @@
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},
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"dependencies": {
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"crypto-lib": "https://github.com/whiteout-io/crypto-lib/tarball/master",
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"imap-client": "https://github.com/whiteout-io/imap-client/tarball/master",
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"imap-client": "https://github.com/whiteout-io/imap-client/tarball/dev/stream-plaintext",
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"pgpmailer": "https://github.com/whiteout-io/pgpmailer/tarball/master",
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"requirejs": "2.1.10"
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},
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@ -207,10 +207,7 @@ define(function(require) {
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*/
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var self = this,
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folder,
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delta1 /*, delta2 */ , delta3, delta4, //message
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deltaF2, deltaF4,
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isFolderInitialized;
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folder, isFolderInitialized;
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// validate options
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@ -258,30 +255,13 @@ define(function(require) {
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return;
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}
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if (_.isEmpty(storedMessages)) {
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// if there's nothing here, we're good
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callback();
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doImapDelta();
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return;
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}
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var after = _.after(storedMessages.length, function() {
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callback();
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doImapDelta();
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});
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storedMessages.forEach(function(storedMessage) {
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handleMessage(storedMessage, function(err, cleartextMessage) {
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if (err) {
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self._account.busy = false;
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callback(err);
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return;
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}
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folder.messages.push(cleartextMessage);
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after();
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});
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delete storedMessage.body; // do not flood the memory
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folder.messages.push(storedMessage);
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});
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callback();
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doImapDelta();
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});
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}
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@ -295,18 +275,16 @@ define(function(require) {
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return;
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}
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/*
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* delta1: storage > memory => we deleted messages, remove from remote
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* delta2: memory > storage => we added messages, push to remote
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* deltaF2: memory > storage => we changed flags, sync them to the remote and memory
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*/
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delta1 = checkDelta(storedMessages, folder.messages);
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// delta2 = checkDelta(folder.messages, storedMessages); // not supported yet
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deltaF2 = checkFlags(folder.messages, storedMessages);
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doDelta1();
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/*
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* delta1: storage > memory => we deleted messages, remove from remote
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*/
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function doDelta1() {
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var inMemoryUids = _.pluck(folder.messages, 'uid'),
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storedMessageUids = _.pluck(storedMessages, 'uid'),
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delta1 = _.difference(storedMessageUids, inMemoryUids); // delta1 contains only uids
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if (_.isEmpty(delta1)) {
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doDeltaF2();
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return;
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@ -317,10 +295,10 @@ define(function(require) {
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});
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// deltaF2 contains references to the in-memory messages
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delta1.forEach(function(inMemoryMessage) {
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delta1.forEach(function(inMemoryUid) {
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var deleteMe = {
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folder: folder.path,
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uid: inMemoryMessage.uid
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uid: inMemoryUid
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};
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self._imapDeleteMessage(deleteMe, function(err) {
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@ -343,7 +321,12 @@ define(function(require) {
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});
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}
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/*
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* deltaF2: memory > storage => we changed flags, sync them to the remote and memory
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*/
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function doDeltaF2() {
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var deltaF2 = checkFlags(folder.messages, storedMessages); // deltaf2 contains the message objects, we need those to sync the flags
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if (_.isEmpty(deltaF2)) {
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callback();
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doImapDelta();
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@ -397,48 +380,37 @@ define(function(require) {
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function doImapDelta() {
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self._imapSearch({
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folder: folder.path
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}, function(err, uids) {
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}, function(err, inImapUids) {
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if (err) {
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self._account.busy = false;
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callback(err);
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return;
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}
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// uidWrappers is just to wrap the bare uids in an object { uid: 123 } so
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// the checkDelta function can treat it like something that resembles a stripped down email object...
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var uidWrappers = _.map(uids, function(uid) {
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return {
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uid: uid
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};
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});
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doDelta3();
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/*
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* delta3: memory > imap => we deleted messages directly from the remote, remove from memory and storage
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* delta4: imap > memory => we have new messages available, fetch to memory and storage
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*/
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delta3 = checkDelta(folder.messages, uidWrappers);
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delta4 = checkDelta(uidWrappers, folder.messages);
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doDelta3();
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// we deleted messages directly from the remote, remove from memory and storage
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function doDelta3() {
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var inMemoryUids = _.pluck(folder.messages, 'uid'),
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delta3 = _.difference(inMemoryUids, inImapUids);
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if (_.isEmpty(delta3)) {
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doDelta4();
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return;
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}
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var after = _.after(delta3.length, function() {
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// we're done with delta 3, so let's continue
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doDelta4();
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});
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// delta3 contains references to the in-memory messages that have been deleted from the remote
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delta3.forEach(function(inMemoryMessage) {
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delta3.forEach(function(inMemoryUid) {
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// remove delta3 from local storage
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self._localDeleteMessage({
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folder: folder.path,
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uid: inMemoryMessage.uid
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uid: inMemoryUid
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}, function(err) {
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if (err) {
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self._account.busy = false;
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@ -446,85 +418,98 @@ define(function(require) {
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return;
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}
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// remove delta3 from memory
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var idx = folder.messages.indexOf(inMemoryMessage);
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folder.messages.splice(idx, 1);
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// remove the uid from memory
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var inMemoryMessage = _.findWhere(folder.messages, function(msg) {
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return msg.uid.a === inMemoryUid;
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});
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folder.messages.splice(folder.messages.indexOf(inMemoryMessage), 1);
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after();
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});
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});
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}
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// we have new messages available, fetch to memory and storage
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// (downstream sync)
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/*
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* delta4: imap > memory => we have new messages available, fetch downstream to memory and storage
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*/
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function doDelta4() {
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var inMemoryUids = _.pluck(folder.messages, 'uid'),
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delta4 = _.difference(inImapUids, inMemoryUids);
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// no delta, we're done here
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if (_.isEmpty(delta4)) {
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doDeltaF4();
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return;
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}
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// eliminate uids smaller than the biggest local uid, i.e. just fetch everything
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// that came in AFTER the most recent email we have in memory. Keep in mind that
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// uids are strictly ascending, so there can't be a NEW mail in the mailbox with a
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// uid smaller than anything we've encountered before.
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if (!_.isEmpty(folder.messages)) {
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var localUids = _.pluck(folder.messages, 'uid'),
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maxLocalUid = Math.max.apply(null, localUids);
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if (!_.isEmpty(inMemoryUids)) {
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var maxInMemoryUid = Math.max.apply(null, inMemoryUids); // apply works with separate arguments rather than an array
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// eliminate everything prior to maxLocalUid
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delta4 = _.filter(delta4, function(uidWrapper) {
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return uidWrapper.uid > maxLocalUid;
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// eliminate everything prior to maxInMemoryUid, that was already synced
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delta4 = _.filter(delta4, function(uid) {
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return uid > maxInMemoryUid;
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});
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}
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// sync in the uids in ascending order, to not leave the local database in a corrupted state:
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// when the 5, 3, 1 should be synced and the client would fail at 3, but 5 was successfully synced,
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// any subsequent syncs would never fetch 1 and 3. simple solution: sync in ascending order
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delta4 = _.sortBy(delta4, function(uidWrapper) {
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return uidWrapper.uid;
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});
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syncNextItem();
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function syncNextItem() {
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// no delta, we're done here
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if (_.isEmpty(delta4)) {
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doDeltaF4();
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self._imapListMessages({
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folder: folder.path,
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firstUid: Math.min.apply(null, delta4),
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lastUid: Math.max.apply(null, delta4)
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}, function(err, messages) {
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if (err) {
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self._account.busy = false;
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callback(err);
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return;
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}
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// delta4 contains the headers that are newly available on the remote
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var nextUidWrapper = delta4.shift();
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// if there is a verification message in the synced messages, handle it
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var verificationMessage = _.findWhere(messages, {
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subject: str.subjectPrefix + str.verificationSubject
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});
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// get the whole message
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self._imapGetMessage({
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folder: folder.path,
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uid: nextUidWrapper.uid
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}, function(err, message) {
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if (err) {
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self._account.busy = false;
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callback(err);
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if (verificationMessage) {
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handleVerification(verificationMessage, function(err) {
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// TODO: show usable error when the verification failed
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if (err) {
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self._account.busy = false;
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callback(err);
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return;
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}
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storeHeaders();
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});
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return;
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}
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storeHeaders();
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function storeHeaders() {
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// eliminate non-whiteout mails
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messages = _.filter(messages, function(message) {
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// we don't want to display "[whiteout] "-prefixed mails for now
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return message.subject.indexOf(str.subjectPrefix) === 0 && message.subject !== (str.subjectPrefix + str.verificationSubject);
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});
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// no delta, we're done here
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if (_.isEmpty(messages)) {
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doDeltaF4();
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return;
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}
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// imap filtering is insufficient, since google ignores non-alphabetical characters
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if (message.subject.indexOf(str.subjectPrefix) === -1) {
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syncNextItem();
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return;
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}
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// filter out the "[whiteout] " prefix
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messages.forEach(function(messages) {
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messages.subject = messages.subject.replace(/^\[whiteout\] /, '');
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});
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if (isVerificationMail(message)) {
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verify(message, function(err) {
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if (err) {
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self._account.busy = false;
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callback(err);
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return;
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}
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syncNextItem();
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});
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return;
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}
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// add the encrypted message to the local storage
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// persist the encrypted message to the local storage
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self._localStoreMessages({
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folder: folder.path,
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emails: [message]
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emails: messages
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}, function(err) {
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if (err) {
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self._account.busy = false;
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@ -532,25 +517,21 @@ define(function(require) {
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return;
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}
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// decrypt and add to folder in memory
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handleMessage(message, function(err, cleartextMessage) {
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if (err) {
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self._account.busy = false;
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callback(err);
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return;
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}
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folder.messages.push(cleartextMessage);
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syncNextItem();
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});
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// if persisting worked, add them to the messages array
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folder.messages = folder.messages.concat(messages);
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doDeltaF4();
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});
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});
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}
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}
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});
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}
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});
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/**
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* deltaF4: imap > memory => we changed flags directly on the remote, sync them to the storage and memory
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*/
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function doDeltaF4() {
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var answeredUids, unreadUids;
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var answeredUids, unreadUids,
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deltaF4 = [];
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getUnreadUids();
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@ -593,9 +574,6 @@ define(function(require) {
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}
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function updateFlags() {
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// deltaF4: imap > memory => we changed flags directly on the remote, sync them to the storage and memory
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deltaF4 = [];
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folder.messages.forEach(function(msg) {
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// if the message's uid is among the uids that should be unread,
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// AND the message is not unread, we clearly have to change that
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@ -686,27 +664,6 @@ define(function(require) {
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}
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}
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/*
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* Checks which messages are included in a, but not in b
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*/
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function checkDelta(a, b) {
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var i, msg, exists,
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delta = [];
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// find the delta
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for (i = a.length - 1; i >= 0; i--) {
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msg = a[i];
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exists = _.findWhere(b, {
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uid: msg.uid
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});
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if (!exists) {
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delta.push(msg);
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}
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}
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return delta;
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}
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/*
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* checks if there are some flags that have changed in a and b
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*/
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@ -728,144 +685,210 @@ define(function(require) {
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return delta;
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}
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function isVerificationMail(email) {
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return email.subject === str.subjectPrefix + str.verificationSubject;
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}
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function handleVerification(message, localCallback) {
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self._imapStreamText({
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folder: options.folder,
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message: message
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}, function(error) {
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var verificationUrlPrefix = config.cloudUrl + config.verificationUrl,
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uuid, isValidUuid, index;
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function verify(email, localCallback) {
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var uuid, isValidUuid, index, verifyUrlPrefix = config.cloudUrl + config.verificationUrl;
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if (!email.unread) {
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// don't bother if the email was already marked as read
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localCallback();
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return;
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}
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index = email.body.indexOf(verifyUrlPrefix);
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if (index === -1) {
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// there's no url in the email, so forget about that.
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localCallback();
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return;
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}
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uuid = email.body.substr(index + verifyUrlPrefix.length, config.verificationUuidLength);
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isValidUuid = new RegExp('[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}').test(uuid);
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if (!isValidUuid) {
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// there's no valid uuid in the email, so forget about that, too.
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localCallback();
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return;
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}
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self._keychain.verifyPublicKey(uuid, function(err) {
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if (err) {
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localCallback({
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errMsg: 'Verifying your public key failed: ' + err.errMsg
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});
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if (error) {
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localCallback(error);
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return;
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}
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// public key has been verified, mark the message as read, delete it, and ignore it in the future
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self._imapMark({
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folder: options.folder,
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uid: email.uid,
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unread: false
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}, function(err) {
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index = message.body.indexOf(verificationUrlPrefix);
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if (index === -1) {
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// there's no url in the message, so forget about that.
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localCallback();
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return;
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}
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uuid = message.body.substr(index + verificationUrlPrefix.length, config.verificationUuidLength);
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isValidUuid = new RegExp('[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}').test(uuid);
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if (!isValidUuid) {
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// there's no valid uuid in the message, so forget about that, too.
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localCallback();
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return;
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}
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self._keychain.verifyPublicKey(uuid, function(err) {
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if (err) {
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localCallback(err);
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localCallback({
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errMsg: 'Verifying your public key failed: ' + err.errMsg
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});
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return;
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}
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// public key has been verified, delete the message
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self._imapDeleteMessage({
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folder: options.folder,
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uid: email.uid
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uid: message.uid
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}, localCallback);
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});
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});
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}
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};
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function handleMessage(message, localCallback) {
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message.subject = message.subject.split(str.subjectPrefix)[1];
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/**
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* Streams message content
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* @param {Object} options.message The message for which to retrieve the body
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* @param {Object} options.folder The IMAP folder
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* @param {Function} callback(error, message) Invoked when the message is streamed, or provides information if an error occurred
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*/
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EmailDAO.prototype.getMessageContent = function(options, callback) {
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var self = this,
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message = options.message,
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folder = options.folder;
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if (containsArmoredCiphertext(message)) {
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decrypt(message, localCallback);
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return;
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}
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// cleartext mail
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localCallback(null, message);
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// the message already has a body, so no need to become active here
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if (message.body) {
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callback(null, message);
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return;
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}
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function containsArmoredCiphertext(email) {
|
||||
return typeof email.body === 'string' && email.body.indexOf(str.cryptPrefix) !== -1 && email.body.indexOf(str.cryptSuffix) !== -1;
|
||||
}
|
||||
// the mail does not have its content in memory
|
||||
readFromDevice();
|
||||
|
||||
function decrypt(email, localCallback) {
|
||||
var sender;
|
||||
// if possible, read the message body from the device
|
||||
function readFromDevice() {
|
||||
self._localListMessages({
|
||||
folder: folder,
|
||||
uid: message.uid
|
||||
}, function(err, localMessages) {
|
||||
var localMessage;
|
||||
|
||||
extractArmoredContent(email);
|
||||
|
||||
// fetch public key required to verify signatures
|
||||
sender = email.from[0].address;
|
||||
self._keychain.getReceiverPublicKey(sender, function(err, senderPubkey) {
|
||||
if (err) {
|
||||
localCallback(err);
|
||||
callback(err);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!senderPubkey) {
|
||||
// this should only happen if a mail from another channel is in the inbox
|
||||
email.body = 'Public key for sender not found!';
|
||||
localCallback(null, email);
|
||||
localMessage = localMessages[0];
|
||||
|
||||
if (!localMessage.body) {
|
||||
streamFromImap();
|
||||
return;
|
||||
}
|
||||
|
||||
// decrypt and verfiy signatures
|
||||
self._crypto.decrypt(email.body, senderPubkey.publicKey, function(err, decrypted) {
|
||||
if (err) {
|
||||
decrypted = err.errMsg;
|
||||
}
|
||||
// attach the body to the mail object
|
||||
message.body = localMessage.body;
|
||||
handleEncryptedContent();
|
||||
});
|
||||
}
|
||||
|
||||
// set encrypted flag
|
||||
email.encrypted = true;
|
||||
// if reading the message body from the device was unsuccessful,
|
||||
// stream the message from the imap server
|
||||
function streamFromImap() {
|
||||
self._imapStreamText({
|
||||
folder: folder,
|
||||
message: message
|
||||
}, function(error) {
|
||||
if (error) {
|
||||
callback(error);
|
||||
return;
|
||||
}
|
||||
|
||||
// does our message block even need to be parsed?
|
||||
// this is a very primitive detection if we have a mime node or plain text
|
||||
// taking this out breaks compatibility to clients < 0.5
|
||||
if (decrypted.indexOf('Content-Transfer-Encoding:') === -1 &&
|
||||
decrypted.indexOf('Content-Type:') === -1) {
|
||||
// decrypted message is plain text and not a well-formed email
|
||||
email.body = decrypted;
|
||||
localCallback(null, email);
|
||||
self._localStoreMessages({
|
||||
folder: folder,
|
||||
emails: [message]
|
||||
}, function(error) {
|
||||
if (error) {
|
||||
callback(error);
|
||||
return;
|
||||
}
|
||||
|
||||
// parse decrypted message
|
||||
self._imapParseMessageBlock({
|
||||
message: email,
|
||||
block: decrypted
|
||||
}, function(error, parsedMessage) {
|
||||
if (!parsedMessage) {
|
||||
localCallback(error);
|
||||
return;
|
||||
}
|
||||
|
||||
// remove the pgp-signature from the attachments
|
||||
parsedMessage.attachments = _.reject(parsedMessage.attachments, function(attmt) {
|
||||
return attmt.mimeType === "application/pgp-signature";
|
||||
});
|
||||
localCallback(error, parsedMessage);
|
||||
});
|
||||
handleEncryptedContent();
|
||||
});
|
||||
});
|
||||
|
||||
function extractArmoredContent(email) {
|
||||
var start = email.body.indexOf(str.cryptPrefix),
|
||||
end = email.body.indexOf(str.cryptSuffix) + str.cryptSuffix.length;
|
||||
|
||||
// parse email body for encrypted message block
|
||||
email.body = email.body.substring(start, end);
|
||||
}
|
||||
}
|
||||
|
||||
function handleEncryptedContent() {
|
||||
// normally, the imap-client should already have set the message.encrypted flag. problem: if we have pgp/inline,
|
||||
// we can't reliably determine if the message is encrypted before we have inspected the payload...
|
||||
message.encrypted = containsArmoredCiphertext(message);
|
||||
|
||||
// cleans the message body from everything but the ciphertext
|
||||
if (message.encrypted) {
|
||||
message.decrypted = false;
|
||||
extractCiphertext();
|
||||
}
|
||||
callback(null, message);
|
||||
}
|
||||
|
||||
function containsArmoredCiphertext() {
|
||||
return message.body.indexOf(str.cryptPrefix) !== -1 && message.body.indexOf(str.cryptSuffix) !== -1;
|
||||
}
|
||||
|
||||
function extractCiphertext() {
|
||||
var start = message.body.indexOf(str.cryptPrefix),
|
||||
end = message.body.indexOf(str.cryptSuffix) + str.cryptSuffix.length;
|
||||
|
||||
// parse message body for encrypted message block
|
||||
message.body = message.body.substring(start, end);
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
EmailDAO.prototype.decryptMessageContent = function(options, callback) {
|
||||
var self = this,
|
||||
message = options.message;
|
||||
|
||||
// the message is not encrypted or has already been decrypted
|
||||
if (!message.encrypted || message.decrypted) {
|
||||
callback(null, message);
|
||||
return;
|
||||
}
|
||||
|
||||
// get the sender's public key for signature checking
|
||||
self._keychain.getReceiverPublicKey(message.from[0].address, function(err, senderPublicKey) {
|
||||
if (err) {
|
||||
callback(err);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!senderPublicKey) {
|
||||
// this should only happen if a mail from another channel is in the inbox
|
||||
message.body = 'Public key for sender not found!';
|
||||
callback(null, message);
|
||||
return;
|
||||
}
|
||||
|
||||
// get the receiver's public key to check the message signature
|
||||
self._crypto.decrypt(message.body, senderPublicKey.publicKey, function(err, decrypted) {
|
||||
// if an error occurs during decryption, display the error message as the message content
|
||||
decrypted = decrypted || err.errMsg || 'Error occurred during decryption';
|
||||
|
||||
// this is a very primitive detection if we have PGP/MIME or PGP/INLINE
|
||||
if (decrypted.indexOf('Content-Transfer-Encoding:') === -1 && decrypted.indexOf('Content-Type:') === -1) {
|
||||
message.body = decrypted;
|
||||
message.decrypted = true;
|
||||
callback(null, message);
|
||||
return;
|
||||
}
|
||||
|
||||
// parse the decrypted MIME message
|
||||
self._imapParseMessageBlock({
|
||||
message: message,
|
||||
block: decrypted
|
||||
}, function(error) {
|
||||
if (error) {
|
||||
callback(error);
|
||||
return;
|
||||
}
|
||||
|
||||
message.decrypted = true;
|
||||
|
||||
// remove the pgp-signature from the attachments
|
||||
message.attachments = _.reject(message.attachments, function(attmt) {
|
||||
return attmt.mimeType === "application/pgp-signature";
|
||||
});
|
||||
|
||||
// we're done here!
|
||||
callback(error, message);
|
||||
});
|
||||
});
|
||||
});
|
||||
};
|
||||
|
||||
EmailDAO.prototype._imapMark = function(options, callback) {
|
||||
@ -1099,10 +1122,13 @@ define(function(require) {
|
||||
};
|
||||
|
||||
/**
|
||||
* Get an email messsage including the email body from imap
|
||||
* @param {String} options.messageId The
|
||||
* Get an email messsage without the body
|
||||
* @param {String} options.folder The folder
|
||||
* @param {Number} options.firstUid The lower bound of the uid (inclusive)
|
||||
* @param {Number} options.lastUid The upper bound of the uid range (inclusive)
|
||||
* @param {Function} callback (error, messages) The callback when the imap client is done fetching message metadata
|
||||
*/
|
||||
EmailDAO.prototype._imapGetMessage = function(options, callback) {
|
||||
EmailDAO.prototype._imapListMessages = function(options, callback) {
|
||||
var self = this;
|
||||
|
||||
if (!this._account.online) {
|
||||
@ -1113,17 +1139,34 @@ define(function(require) {
|
||||
return;
|
||||
}
|
||||
|
||||
self._imapClient.getMessage({
|
||||
self._imapClient.listMessagesByUid({
|
||||
path: options.folder,
|
||||
uid: options.uid
|
||||
}, function(err, message) {
|
||||
if (err) {
|
||||
callback(err);
|
||||
return;
|
||||
}
|
||||
firstUid: options.firstUid,
|
||||
lastUid: options.lastUid
|
||||
}, callback);
|
||||
};
|
||||
|
||||
callback(null, message);
|
||||
});
|
||||
/**
|
||||
* Stream an email messsage's body
|
||||
* @param {String} options.folder The folder
|
||||
* @param {Object} options.message The message, as retrieved by _imapListMessages
|
||||
* @param {Function} callback (error, message) The callback when the imap client is done streaming message text content
|
||||
*/
|
||||
EmailDAO.prototype._imapStreamText = function(options, callback) {
|
||||
var self = this;
|
||||
|
||||
if (!this._account.online) {
|
||||
callback({
|
||||
errMsg: 'Client is currently offline!',
|
||||
code: 42
|
||||
});
|
||||
return;
|
||||
}
|
||||
|
||||
self._imapClient.streamPlaintext({
|
||||
path: options.folder,
|
||||
message: options.message
|
||||
}, callback);
|
||||
};
|
||||
|
||||
/**
|
||||
|
File diff suppressed because it is too large
Load Diff
Loading…
Reference in New Issue
Block a user