forked from mscdex/node-imap
/
imap.js
1293 lines (1187 loc) · 44.2 KB
/
imap.js
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var assert = require('assert'),
inspect = require('util').inspect,
inherits = require('util').inherits,
Socket = require('net').Socket,
EventEmitter = require('events').EventEmitter,
MIMEParser = require('./mimeparser'),
XRegExp = require('./xregexp').XRegExp;
var parsers = require('./imap.parsers'),
utils = require('./imap.utilities');
// main constants
var CRLF = '\r\n',
STATES = {
NOCONNECT: 0,
NOAUTH: 1,
AUTH: 2,
BOXSELECTING: 3,
BOXSELECTED: 4
},
RE_LITHEADER = /(?:((?:BODY\[.*\])?|[^ ]+) )?\{(\d+)\}$/i,
RE_UNRESP = /^\* (OK|PREAUTH|NO|BAD) (?:\[(.+)\] )?(.+)$/i,
RE_CMD = /^([A-Za-z]+)(?: |$)/i,
REX_UNRESPDATA = XRegExp('^\\* (?:(?:(?<type>NAMESPACE) (?<personal>(?:NIL|\\((?:\\(.+\\))+\\))) (?<other>(?:NIL|\\((?:\\(.+\\))+\\))) (?<shared>(?:NIL|\\((?:\\(.+\\))+\\))))|(?:(?<type>FLAGS) \\((?<flags>.*)\\))|(?:(?<type>LIST|LSUB|XLIST) \\((?<flags>.*)\\) (?<delimiter>".+"|NIL) (?<mailbox>.+))|(?:(?<type>(SEARCH|SORT))(?: (?<results>.+))?)|(?:(?<type>STATUS) (?<mailbox>.+) \\((?<attributes>.*)\\))|(?:(?<type>CAPABILITY) (?<capabilities>.+))|(?:(?<type>BYE) (?:\\[(?<code>.+)\\] )?(?<message>.+)))$', 'i'),
REX_UNRESPNUM = XRegExp('^\\* (?<num>\\d+) (?:(?<type>EXISTS)|(?<type>RECENT)|(?<type>EXPUNGE)|(?:(?<type>FETCH) \\((?<info>.*)\\)))$', 'i');
// extension constants
var IDLE_NONE = 1,
IDLE_WAIT = 2,
IDLE_READY = 3,
IDLE_DONE = 4;
function ImapConnection (options) {
if (!(this instanceof ImapConnection))
return new ImapConnection(options);
EventEmitter.call(this);
this._options = {
username: '',
password: '',
host: 'localhost',
port: 143,
secure: false,
connTimeout: 10000, // connection timeout in msecs
debug: false
};
this._state = {
status: STATES.NOCONNECT,
conn: null,
curId: 0,
requests: [],
numCapRecvs: 0,
isReady: false,
isIdle: true,
tmrKeepalive: null,
tmoKeepalive: 10000,
tmrConn: null,
indata: {
literals: [],
line: undefined,
line_s: { p: 0, ret: undefined },
temp: undefined,
streaming: false,
expect: -1
},
box: {
uidnext: 0,
flags: [],
newKeywords: false,
uidvalidity: 0,
keywords: [],
permFlags: [],
name: null,
messages: { total: 0, new: 0 }
},
ext: {
// Capability-specific state info
idle: {
MAX_WAIT: 1740000, // 29 mins in ms
state: IDLE_NONE,
timeWaited: 0 // ms
}
}
};
this._options = utils.extend(true, this._options, options);
if (typeof this._options.debug === 'function')
this.debug = this._options.debug;
else
this.debug = false;
this.delimiter = undefined;
this.namespaces = { personal: [], other: [], shared: [] };
this.capabilities = [];
}
inherits(ImapConnection, EventEmitter);
exports.ImapConnection = ImapConnection;
ImapConnection.prototype.connect = function(loginCb) {
this._reset();
var self = this,
state = this._state,
requests = state.requests,
indata = state.indata;
state.conn = new Socket();
state.conn.setKeepAlive(true);
if (this._options.secure) {
// TODO: support STARTTLS
state.conn.cleartext = utils.setSecure(state.conn);
state.conn.on('secure', function() {
self.debug&&self.debug('[connection] Secure connection made.');
});
} else
state.conn.cleartext = state.conn;
state.conn.on('connect', function() {
clearTimeout(state.tmrConn);
self.debug&&self.debug('[connection] Connected to host.');
state.conn.cleartext.write('');
state.status = STATES.NOAUTH;
});
state.conn.on('end', function() {
self.debug&&self.debug('[connection] FIN packet received. Disconnecting...');
self.emit('end');
});
function errorHandler(err) {
clearTimeout(state.tmrConn);
if (state.status === STATES.NOCONNECT)
loginCb(new Error('Unable to connect. Reason: ' + err));
self.emit('error', err);
self.debug&&self.debug('[connection] Error occurred: ' + err);
}
state.conn.cleartext.on('error', errorHandler);
state.conn.on('close', function(had_error) {
self._reset();
requests = state.requests;
self.debug&&self.debug('[connection] Connection closed.');
self.emit('close', had_error);
});
state.conn.on('ready', function() {
// First get pre-auth capabilities, including server-supported auth
// mechanisms
self._send('CAPABILITY', function() {
// Next, attempt to login
var checkedNS = false;
self._login(function redo(err) {
if (err)
return loginCb(err);
// Next, get the list of available namespaces if supported (RFC2342)
if (!checkedNS && self._serverSupports('NAMESPACE')) {
// Re-enter this function after we've obtained the available
// namespaces
checkedNS = true;
return self._send('NAMESPACE', redo);
}
// Lastly, get the top-level mailbox hierarchy delimiter used by the
// server
self._send('LIST "" ""', loginCb);
});
});
});
function read(b) {
var blen = b.length, origPos = b.p;
if (indata.expect <= (blen - b.p)) {
var left = indata.expect;
indata.expect = 0;
b.p += left;
return b.slice(origPos, origPos + left);
} else {
indata.expect -= (blen - b.p);
b.p = blen;
return origPos > 0 ? b.slice(origPos) : b;
}
}
function ondata(b) {
b.p || (b.p = 0);
if (b.length === 0 || b.p >= b.length) return;
self.debug&&self.debug('\n<== ' + inspect(b.toString('binary', b.p)) + '\n');
var r, m, litType;
if (indata.expect > 0) {
r = read(b);
if (indata.streaming) {
if (requests[0]._useParser)
state.parser.execute(r);
else
requests[0]._msg.emit('data', r);
if (indata.expect === 0) {
indata.streaming = false;
if (requests[0]._useParser)
state.parser.finish();
}
} else {
if (indata.temp)
indata.temp += r.toString('binary');
else
indata.temp = r.toString('binary');
if (indata.expect === 0)
indata.literals.push(indata.temp);
indata.temp = undefined;
}
if (b.p >= b.length)
return;
}
if ((r = utils.line(b, indata.line_s)) === false)
return;
else {
m = RE_LITHEADER.exec(r);
if (indata.line)
indata.line += r;
else
indata.line = r;
if (m)
litType = m[1];
//assert((litType = m[1]) !== undefined);
indata.expect = (m ? parseInt(m[2], 10) : -1);
if (indata.expect > -1) {
if ((m = /\* (\d+) FETCH/i.exec(indata.line))
&& /^BODY\[/i.test(litType)) {
var msg = new ImapMessage();
msg.seqno = parseInt(m[1], 10);
requests[0]._msg = msg;
requests[0]._fetcher.emit('message', msg);
indata.streaming = true;
indata.literals.push(indata.expect);
if (requests[0]._useParser) {
requests[0]._msg.headers = {};
if (!state.parser) {
state.parser = new MIMEParser();
state.parser.on('header', function(name, val) {
name = name.toLowerCase();
if (requests[0]._headers
&& requests[0]._headers.indexOf(name) === -1)
return;
if (requests[0]._msg.headers[name] !== undefined)
requests[0]._msg.headers[name].push(val);
else
requests[0]._msg.headers[name] = [val];
});
state.parser.on('data', function(str) {
requests[0]._msg.emit('data', str);
});
}
}
} else if (indata.expect === 0)
indata.literals.push('');
// start reading of the literal or get the rest of the response
return ondata(b);
}
}
if (indata.line[0] === '*') { // Untagged server response
var isUnsolicited =
(requests[0] && requests[0].cmd === 'NOOP')
|| (state.isIdle && state.ext.idle.state === IDLE_READY);
if (m = XRegExp.exec(indata.line, REX_UNRESPNUM)) {
// m.type = response type (numeric-based)
m.type = m.type.toUpperCase();
self.debug&&self.debug('[parsing incoming] saw untagged ' + m.type);
switch (m.type) {
case 'FETCH':
// m.info = message details
var msg = (requests[0] && requests[0]._msg
? requests[0]._msg
: new ImapMessage());
parsers.parseFetch(m.info, indata.literals, msg);
if (typeof msg.body === 'number') {
// we streamed a body
delete msg.body;
msg.emit('end');
} else {
// no body was streamed
msg.seqno = parseInt(m.num, 10);
if (isUnsolicited)
self.emit('msgupdate', msg);
else {
if (typeof msg.body === 'string') {
// a body was given as a non-literal string
var data = new Buffer(msg.body, 'binary');
delete msg.body;
requests[0]._fetcher.emit('message', msg);
msg.emit('data', data);
msg.emit('end');
} else {
// non-body fetch
if (Object.keys(msg).indexOf('body') > -1)
delete msg.body;
requests[0]._fetcher.emit('message', msg);
msg.emit('end');
}
}
}
break;
case 'EXISTS':
// mailbox total message count
var prev = state.box.messages.total,
now = parseInt(m.num, 10);
state.box.messages.total = now;
if (state.status !== STATES.BOXSELECTING && now > prev) {
state.box.messages.new = now-prev;
self.emit('mail', state.box.messages.new); // new mail
}
break;
case 'RECENT':
// messages marked with the \Recent flag (i.e. new messages)
state.box.messages.new = parseInt(m.num, 10);
break;
case 'EXPUNGE':
// confirms permanent deletion of a single message
if (state.box.messages.total > 0)
--state.box.messages.total;
if (isUnsolicited)
self.emit('deleted', parseInt(m.num, 10));
break;
}
} else if (m = XRegExp.exec(indata.line, REX_UNRESPDATA)) {
// m.type = response type (data)
m.type = m.type.toUpperCase();
self.debug&&self.debug('[parsing incoming] saw untagged ' + m.type);
switch (m.type) {
case 'NAMESPACE':
/* m.personal = personal namespaces (or null)
m.other = personal namespaces (or null)
m.shared = personal namespaces (or null)
*/
self.namespaces.personal =
parsers.parseNamespaces(m.personal, indata.literals);
self.namespaces.other =
parsers.parseNamespaces(m.other, indata.literals);
self.namespaces.shared =
parsers.parseNamespaces(m.shared, indata.literals);
break;
case 'FLAGS':
// m.flags = list of 0+ flags
m.flags = (m.flags
? m.flags.split(' ')
.map(function(f) {
return f.substr(1);
})
: []);
if (state.status === STATES.BOXSELECTING)
state.box.flags = m.flags;
break;
case 'LIST':
case 'LSUB':
case 'XLIST':
/* m.flags = list of 0+ flags
m.delimiter = mailbox delimiter (string or null)
m.mailbox = mailbox name (string)
*/
m.flags = (m.flags ? m.flags.toUpperCase().split(' ') : []);
m.delimiter = parsers.convStr(m.delimiter, indata.literals);
m.mailbox = parsers.convStr(m.mailbox, indata.literals);
if (self.delimiter === undefined)
self.delimiter = parsers.convStr(m.delimiter, indata.literals);
else {
if (requests[0].cbargs.length === 0)
requests[0].cbargs.push({});
var box = {
attribs: m.flags.map(function(attr) {
return attr.substr(1);
}),
delimiter: m.delimiter,
children: null,
parent: null
},
name = m.mailbox,
curChildren = requests[0].cbargs[0];
if (box.delimiter) {
var path = name.split(box.delimiter).filter(utils.isNotEmpty),
parent = null;
name = path.pop();
for (var i=0,len=path.length; i<len; i++) {
if (!curChildren[path[i]])
curChildren[path[i]] = {};
if (!curChildren[path[i]].children)
curChildren[path[i]].children = {};
parent = curChildren[path[i]];
curChildren = curChildren[path[i]].children;
}
box.parent = parent;
}
if (!curChildren[name])
curChildren[name] = box;
}
break;
case 'SEARCH':
case 'SORT':
// m.results = list of 0+ uid/seq numbers (undefined if none)
requests[0].cbargs.push((m.results ? m.results.split(' ') : []));
break;
case 'STATUS':
/* m.mailbox = mailbox name (string)
m.attributes = expression list (k=>v pairs) of mailbox attributes
*/
m.mailbox = parsers.convStr(m.mailbox, indata.literals);
var ret = {
name: m.mailbox,
uidvalidity: undefined,
messages: {
total: undefined,
new: undefined,
unseen: undefined
}
};
if (m.attributes) {
m.attributes = parsers.parseExpr(m.attributes, indata.literals);
for (var i=0,len=m.attributes.length; i<len; ++i) {
switch (m.attributes[i].toUpperCase()) {
case 'RECENT':
ret.messages.new = parseInt(m.attributes[++i], 10);
break;
case 'UNSEEN':
ret.messages.unseen = parseInt(m.attributes[++i], 10);
break;
case 'MESSAGES':
ret.messages.total = parseInt(m.attributes[++i], 10);
break;
case 'UIDVALIDITY':
ret.uidvalidity = parseInt(m.attributes[++i], 10);
break;
}
}
}
requests[0].cbargs.push(ret);
break;
case 'CAPABILITY':
// m.capabilities = list of (1+) flags
if (state.numCapRecvs < 2)
++state.numCapRecvs;
self.capabilities = m.capabilities.toUpperCase().split(' ');
break;
case 'BYE':
/* m.code = resp-text-code
m.message = arbitrary message
*/
state.conn.end();
break;
}
} else if (m = RE_UNRESP.exec(indata.line)) {
// m[1]: response type
// m[2]: resp-text-code
// m[3]: message
m[1] = m[1].toUpperCase();
self.debug&&self.debug('[parsing incoming] saw untagged ' + m[1]);
switch (m[1]) {
case 'OK':
var code = m[2];
if (state.status === STATES.NOAUTH) {
if (!state.isReady) {
state.isReady = true;
state.conn.emit('ready');
}
} else if (/^ALERT$/i.test(code))
self.emit('alert', m[3]);
else if (state.status === STATES.BOXSELECTING) {
if (m = /^UNSEEN (\d+)/i.exec(code))
state.box.unseen = m[1];
else if (m = /^UIDVALIDITY (\d+)/i.exec(code))
state.box.uidvalidity = m[1];
else if (m = /^UIDNEXT (\d+)/i.exec(code))
state.box.uidnext = m[1];
else if (m = /^PERMANENTFLAGS \((.*)\)/i.exec(code)) {
var idx, permFlags, keywords;
state.box.permFlags = permFlags = m[1].split(' ');
if ((idx = state.box.permFlags.indexOf('\\*')) > -1) {
state.box.newKeywords = true;
permFlags.splice(idx, 1);
}
state.box.keywords = keywords = permFlags.filter(function(f) {
return (f[0] !== '\\');
});
for (var i=0,len=keywords.length; i<len; ++i)
permFlags.splice(permFlags.indexOf(keywords[i]), 1);
state.box.permFlags = permFlags.map(function(f) {
return f.substr(1);
});
}
}
break;
case 'PREAUTH':
state.status = STATES.AUTH;
if (state.numCapRecvs === 0)
state.numCapRecvs = 1;
break;
case 'NO':
case 'BAD':
if (state.status === STATES.NOAUTH)
state.conn.end();
break;
}
} else {
self.debug&&self.debug(
'[parsing incoming] saw unexpected untagged response: '
+ inspect(indata.line));
assert(false);
}
indata.literals = [];
indata.line = undefined;
indata.temp = undefined;
indata.streaming = false;
indata.expect = -1;
if (b.p < b.length)
return ondata(b);
} else if (indata.line[0] === 'A' || indata.line[0] === '+') {
var line = indata.line;
indata.literals = [];
indata.line = undefined;
indata.temp = undefined;
indata.streaming = false;
indata.expect = -1;
self.debug&&self.debug(line[0] === 'A'
? '[parsing incoming] saw tagged response'
: '[parsing incoming] saw continuation response');
if (line[0] === '+' && state.ext.idle.state === IDLE_WAIT) {
state.ext.idle.state = IDLE_READY;
return process.nextTick(function() { self._send(); });
}
var sendBox = false;
clearTimeout(state.tmrKeepalive);
if (state.status === STATES.BOXSELECTING) {
if (/^A\d+ OK/i.test(line)) {
sendBox = true;
state.status = STATES.BOXSELECTED;
} else {
state.status = STATES.AUTH;
self._resetBox();
}
}
if (requests[0].cmd === 'RENAME') {
state.box.name = state.box._newName;
delete state.box._newName;
sendBox = true;
}
if (typeof requests[0].callback === 'function') {
var err = null;
var args = requests[0].cbargs,
cmdstr = requests[0].cmdstr;
if (line[0] === '+') {
if (requests[0].cmd !== 'APPEND') {
err = new Error('Unexpected continuation');
err.type = 'continuation';
err.request = cmdstr;
} else
return requests[0].callback();
} else if (m = /^A\d+ (NO|BAD) (?:\[(.+)\] )?(.+)$/i.exec(line)) {
// m[1]: error type
// m[2]: resp-text-code
// m[3]: message
err = new Error(m[3]);
err.type = 'failure';
err.code = m[2];
err.request = cmdstr;
} else if (state.status === STATES.BOXSELECTED) {
if (sendBox) // SELECT, EXAMINE, RENAME
args.unshift(state.box);
// According to RFC 3501, UID commands do not give errors for
// non-existant user-supplied UIDs, so give the callback empty results
// if we unexpectedly received no untagged responses.
else if ((cmdstr.indexOf('UID FETCH') === 0
|| cmdstr.indexOf('UID SEARCH') === 0
|| cmdstr.indexOf('UID SORT') === 0
) && args.length === 0)
args.unshift([]);
}
args.unshift(err);
requests[0].callback.apply({}, args);
}
var recentCmd = requests[0].cmdstr;
requests.shift();
if (requests.length === 0 && recentCmd !== 'LOGOUT') {
if (state.status === STATES.BOXSELECTED && self._serverSupports('IDLE')) {
// According to RFC 2177, we should re-IDLE at least every 29
// minutes to avoid disconnection by the server
self._send('IDLE', undefined, true);
}
state.tmrKeepalive = setTimeout(function() {
if (state.isIdle) {
if (state.ext.idle.state === IDLE_READY) {
state.ext.idle.timeWaited += state.tmoKeepalive;
if (state.ext.idle.timeWaited >= state.ext.idle.MAX_WAIT)
self._send('IDLE', undefined, true); // restart IDLE
} else if (!self._serverSupports('IDLE'))
self._noop();
}
}, state.tmoKeepalive);
} else
process.nextTick(function() { self._send(); });
state.isIdle = true;
} else if (/^IDLE /i.test(indata.line)) {
self.debug&&self.debug('[parsing incoming] saw IDLE');
if (requests.length)
process.nextTick(function() { self._send(); });
state.isIdle = false;
state.ext.idle.state = IDLE_NONE;
state.ext.idle.timeWaited = 0;
indata.line = undefined;
} else {
// unknown response
self.debug&&self.debug('[parsing incoming] saw unexpected response: '
+ inspect(indata.line));
assert(false);
}
}
state.conn.cleartext.on('data', ondata);
state.conn.connect(this._options.port, this._options.host);
state.tmrConn = setTimeout(this._fnTmrConn.bind(this, loginCb),
this._options.connTimeout);
};
ImapConnection.prototype.isAuthenticated = function() {
return this._state.status >= STATES.AUTH;
};
ImapConnection.prototype.logout = function(cb) {
if (this._state.status >= STATES.NOAUTH)
this._send('LOGOUT', cb);
else
throw new Error('Not connected');
};
ImapConnection.prototype.openBox = function(name, readOnly, cb) {
if (this._state.status < STATES.AUTH)
throw new Error('Not connected or authenticated');
if (this._state.status === STATES.BOXSELECTED)
this._resetBox();
if (cb === undefined) {
cb = readOnly;
readOnly = false;
}
this._state.status = STATES.BOXSELECTING;
this._state.box.name = name;
this._send((readOnly ? 'EXAMINE' : 'SELECT') + ' "' + utils.escape(name)
+ '"', cb);
};
// also deletes any messages in this box marked with \Deleted
ImapConnection.prototype.closeBox = function(cb) {
var self = this;
if (this._state.status !== STATES.BOXSELECTED)
throw new Error('No mailbox is currently selected');
this._send('CLOSE', function(err) {
if (!err) {
self._state.status = STATES.AUTH;
self._resetBox();
}
cb(err);
});
};
ImapConnection.prototype.status = function(boxName, cb) {
if (this._state.status === STATES.BOXSELECTED
&& this._state.box.name === boxName)
throw new Error('Not allowed to call status on the currently selected mailbox');
var cmd = 'STATUS "';
cmd += utils.escape(boxName);
cmd += '" (MESSAGES RECENT UNSEEN UIDVALIDITY)';
this._send(cmd, cb);
};
ImapConnection.prototype.removeDeleted = function(cb) {
if (this._state.status !== STATES.BOXSELECTED)
throw new Error('No mailbox is currently selected');
cb = arguments[arguments.length - 1];
this._send('EXPUNGE', cb);
};
ImapConnection.prototype.getBoxes = function(namespace, cb) {
cb = arguments[arguments.length - 1];
if (arguments.length !== 2)
namespace = '';
this._send((!this._serverSupports('XLIST') ? 'LIST' : 'XLIST')
+ ' "' + utils.escape(namespace) + '" "*"', cb);
};
ImapConnection.prototype.addBox = function(name, cb) {
cb = arguments[arguments.length - 1];
if (typeof name !== 'string' || name.length === 0)
throw new Error('Mailbox name must be a string describing the full path'
+ ' of a new mailbox to be created');
this._send('CREATE "' + utils.escape(name) + '"', cb);
};
ImapConnection.prototype.delBox = function(name, cb) {
cb = arguments[arguments.length - 1];
if (typeof name !== 'string' || name.length === 0)
throw new Error('Mailbox name must be a string describing the full path'
+ ' of an existing mailbox to be deleted');
this._send('DELETE "' + utils.escape(name) + '"', cb);
};
ImapConnection.prototype.renameBox = function(oldname, newname, cb) {
cb = arguments[arguments.length - 1];
if (typeof oldname !== 'string' || oldname.length === 0)
throw new Error('Old mailbox name must be a string describing the full path'
+ ' of an existing mailbox to be renamed');
else if (typeof newname !== 'string' || newname.length === 0)
throw new Error('New mailbox name must be a string describing the full path'
+ ' of a new mailbox to be renamed to');
if (this._state.status === STATES.BOXSELECTED
&& oldname === this._state.box.name && oldname !== 'INBOX')
this._state.box._newName = oldname;
this._send('RENAME "' + utils.escape(oldname) + '" "' + utils.escape(newname)
+ '"', cb);
};
ImapConnection.prototype.append = function(data, options, cb) {
if (typeof options === 'function') {
cb = options;
options = {};
}
options = options || {};
if (!('mailbox' in options)) {
if (this._state.status !== STATES.BOXSELECTED)
throw new Error('No mailbox specified or currently selected');
else
options.mailbox = this._state.box.name;
}
var cmd = 'APPEND "' + utils.escape(options.mailbox) + '"';
if ('flags' in options) {
if (!Array.isArray(options.flags))
options.flags = [options.flags];
cmd += " (\\" + options.flags.join(' \\') + ")";
}
if ('date' in options) {
if (!(options.date instanceof Date))
throw new Error('Expected null or Date object for date');
cmd += ' "' + options.date.getDate() + '-'
+ utils.MONTHS[options.date.getMonth()]
+ '-' + options.date.getFullYear();
cmd += ' ' + ('0' + options.date.getHours()).slice(-2) + ':'
+ ('0' + options.date.getMinutes()).slice(-2) + ':'
+ ('0' + options.date.getSeconds()).slice(-2);
cmd += ((options.date.getTimezoneOffset() > 0) ? ' -' : ' +' );
cmd += ('0' + (-options.date.getTimezoneOffset() / 60)).slice(-2);
cmd += ('0' + (-options.date.getTimezoneOffset() % 60)).slice(-2);
cmd += '"';
}
cmd += ' {';
cmd += (Buffer.isBuffer(data) ? data.length : Buffer.byteLength(data));
cmd += '}';
var self = this, step = 1;
this._send(cmd, function(err) {
if (err || step++ === 2)
return cb(err);
self._state.conn.cleartext.write(data);
self._state.conn.cleartext.write(CRLF);
self.debug&&self.debug('\n==> ' + inspect(data.toString()) + '\n');
});
};
ImapConnection.prototype.search = function(options, cb) {
this._search('UID ', options, cb);
};
ImapConnection.prototype._search = function(which, options, cb) {
if (this._state.status !== STATES.BOXSELECTED)
throw new Error('No mailbox is currently selected');
if (!Array.isArray(options))
throw new Error('Expected array for search options');
this._send(which + 'SEARCH'
+ utils.buildSearchQuery(options, this.capabilities), cb);
};
ImapConnection.prototype.sort = function(sorts, options, cb) {
this._sort('UID ', sorts, options, cb);
};
ImapConnection.prototype._sort = function(which, sorts, options, cb) {
if (this._state.status !== STATES.BOXSELECTED)
throw new Error('No mailbox is currently selected');
if (!Array.isArray(sorts) || !sorts.length)
throw new Error('Expected array with at least one sort criteria');
if (!Array.isArray(options))
throw new Error('Expected array for search options');
if (!this._serverSupports('SORT'))
return cb(new Error('Sorting is not supported on the server'));
var criteria = sorts.map(function(criterion) {
if (typeof criterion !== 'string')
throw new Error('Unexpected sort criterion data type. '
+ 'Expected string. Got: ' + typeof criteria);
var modifier = '';
if (criterion.charAt(0) === '!') {
modifier = 'REVERSE ';
criterion = criterion.substring(1);
}
criterion = criterion.toUpperCase();
switch (criterion) {
case 'ARRIVAL':
case 'CC':
case 'DATE':
case 'FROM':
case 'SIZE':
case 'SUBJECT':
case 'TO':
break;
default:
throw new Error('Unexpected sort criteria: ' + criterion);
}
return modifier + criterion;
});
this._send(which + 'SORT (' + criteria.join(' ') + ') UTF-8'
+ utils.buildSearchQuery(options, this.capabilities), cb);
};
ImapConnection.prototype.fetch = function(uids, options) {
return this._fetch('UID ', uids, options);
};
ImapConnection.prototype._fetch = function(which, uids, options) {
if (this._state.status !== STATES.BOXSELECTED)
throw new Error('No mailbox is currently selected');
if (uids === undefined || uids === null
|| (Array.isArray(uids) && uids.length === 0))
throw new Error('Nothing to fetch');
if (!Array.isArray(uids))
uids = [uids];
utils.validateUIDList(uids);
var opts = {
markSeen: false,
request: {
struct: true,
headers: true,
body: false
}
}, toFetch, bodyRange, extensions, useParser, onlyHeaders, self = this;
if (typeof options !== 'object')
options = {};
utils.extend(true, opts, options);
if (Array.isArray(opts.request.body)) {
var rangeInfo;
if (opts.request.body.length !== 2)
throw new Error("Expected Array of length 2 for body byte range");
else if (typeof opts.request.body[1] !== 'string'
|| !(rangeInfo = /^([\d]+)\-([\d]+)$/.exec(opts.request.body[1]))
|| parseInt(rangeInfo[1], 10) >= parseInt(rangeInfo[2], 10))
throw new Error("Invalid body byte range format");
bodyRange = '<' + parseInt(rangeInfo[1], 10) + '.'
+ parseInt(rangeInfo[2], 10) + '>';
opts.request.body = opts.request.body[0];
}
if (opts.request.headers !== false
&& typeof opts.request.body === 'boolean') {
if (Array.isArray(opts.request.headers))
onlyHeaders = opts.request.headers.join(' ').toUpperCase();
if (opts.request.body === true) {
// fetches the whole entire message (including some/all headers)
toFetch = '';
} else if (onlyHeaders) {
// fetch specific headers only
toFetch = 'HEADER.FIELDS (' + onlyHeaders + ')';
} else {
// fetches (all) headers only
toFetch = 'HEADER';
}
useParser = true;
} else if (opts.request.body === true) {
// fetches the whole entire message text (minus the headers), including
// all message parts
toFetch = 'TEXT';
} else if (typeof opts.request.body === 'string') {
if (opts.request.body.toUpperCase() === 'FULL') {
// fetches the whole entire message (including the headers)
// NOTE: does NOT parse the headers!
toFetch = '';
} else if (/^([\d]+[\.]{0,1})*[\d]+$/.test(opts.request.body)) {
// specific message part identifier, e.g. '1', '2', '1.1', '1.2', etc
toFetch = opts.request.body;
} else
throw new Error("Invalid body partID format");
}
// always fetch GMail-specific bits of information when on GMail
if (this._serverSupports('X-GM-EXT-1'))
extensions = 'X-GM-THRID X-GM-MSGID X-GM-LABELS ';
var cmd = which;
cmd += 'FETCH ';
cmd += uids.join(',');
cmd += ' (';
if (extensions)
cmd += extensions;
cmd += 'UID FLAGS INTERNALDATE';
cmd += (opts.request.struct ? ' BODYSTRUCTURE' : '');
if (toFetch !== undefined) {
cmd += ' BODY';
if (!opts.markSeen)
cmd += '.PEEK';
cmd += '[';
cmd += toFetch;
cmd += ']';
if (bodyRange)
cmd += bodyRange;
}
cmd += ')';
this._send(cmd, function(e) {
var fetcher = self._state.requests[0]._fetcher;
if (e && fetcher)
fetcher.emit('error', e);
else if (e && !fetcher)
self.emit('error', e);
else if (fetcher)
fetcher.emit('end');
});
var imapFetcher = new ImapFetch(),
req = this._state.requests[this._state.requests.length - 1];
req._fetcher = imapFetcher;
req._useParser = useParser;
if (Array.isArray(opts.request.headers))
req._headers = onlyHeaders.toLowerCase().split(' ');
return imapFetcher;
};
ImapConnection.prototype.addFlags = function(uids, flags, cb) {
this._store('UID ', uids, flags, true, cb);
};
ImapConnection.prototype.delFlags = function(uids, flags, cb) {
this._store('UID ', uids, flags, false, cb);
};
ImapConnection.prototype.addKeywords = function(uids, flags, cb) {
return this._addKeywords('UID ', uids, flags, cb);
};
ImapConnection.prototype._addKeywords = function(which, uids, flags, cb) {
if (!this._state.box.newKeywords)
throw new Error('This mailbox does not allow new keywords to be added');
this._store(which, uids, flags, true, cb);
};
ImapConnection.prototype.delKeywords = function(uids, flags, cb) {
this._store('UID ', uids, flags, false, cb);
};
ImapConnection.prototype.setLabels = function(uids, labels, cb) {
this._storeLabels('UID ', uids, labels, '', cb);
}
ImapConnection.prototype.addLabels = function(uids, labels, cb) {
this._storeLabels('UID ', uids, labels, '+', cb);
}
ImapConnection.prototype.delLabels = function(uids, labels, cb) {
this._storeLabels('UID ', uids, labels, '-', cb);
}
ImapConnection.prototype._storeLabels = function(which, uids, labels, mode, cb) {
if (!this._serverSupports('X-GM-EXT-1'))
throw new Error('Server must support X-GM-EXT-1 capability');
if (this._state.status !== STATES.BOXSELECTED)
throw new Error('No mailbox is currently selected');
if (uids === undefined)
throw new Error('The message ID(s) must be specified');
if (!Array.isArray(uids))
uids = [uids];
utils.validateUIDList(uids);
if ((!Array.isArray(labels) && typeof labels !== 'string')
|| (Array.isArray(labels) && labels.length === 0))
throw new Error('labels argument must be a string or a non-empty Array');
if (!Array.isArray(labels))
labels = [labels];