twister HTML + Javascript User Interface
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11 years ago
// twister_io.js
// 2013 Miguel Freitas
//
// low-level twister i/o.
// implements requests of dht resources. multiple pending requests to the same resource are joined.
// cache results (profile, avatar, etc) in memory.
// avatars are cached in localstored (expiration = 24 hours)
// main json rpc method. receives callbacks for success and error
function twisterRpc(method, params, resultFunc, resultArg, errorFunc, errorArg) {
// removing hardcoded username from javascript: please use url http://user:pwd@localhost:28332 instead
//var foo = new $.JsonRpcClient({ ajaxUrl: '/', username: 'user', password: 'pwd'});
var foo = new $.JsonRpcClient({ajaxUrl: window.location.pathname.replace(/[^\/]*$/, '')});
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foo.call(method, params,
function(ret) {resultFunc(resultArg, ret);},
function(ret) {errorFunc(errorArg, ret);} // FIXME why only if "(ret != null)"?
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);
}
// join multiple dhtgets to the same resources in this map
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var _dhtgetPendingMap = {};
var _pubkeyMap = {};
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// number of dhtgets in progress (requests to the daemon)
var _dhtgetsInProgress = 0;
// keep _maxDhtgets smaller than the number of daemon/browser sockets
// most browsers limit to 6 per domain (see http://www.browserscope.org/?category=network)
var _maxDhtgets = 5;
// requests not yet sent to the daemon due to _maxDhtgets limit
var _queuedDhtgets = [];
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// private function to define a key in _dhtgetPendingMap
function _dhtgetLocator(peerAlias, resource, multi) {
return peerAlias + ';' + resource + ';' + multi;
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}
function _dhtgetAddPending(locator, cbFunc, cbReq) {
if (!_dhtgetPendingMap[locator]) {
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_dhtgetPendingMap[locator] = [];
}
_dhtgetPendingMap[locator].push({cbFunc: cbFunc, cbReq: cbReq});
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}
function _dhtgetProcessPending(locator, multi, ret) {
if (_dhtgetPendingMap[locator]) {
for (var i = 0; i < _dhtgetPendingMap[locator].length; i++) {
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var cbFunc = _dhtgetPendingMap[locator][i].cbFunc;
var cbReq = _dhtgetPendingMap[locator][i].cbReq;
if (multi === 'url') {
cbFunc(cbReq, ret); // here is decodeshorturl case
} else if (multi === 's') {
if (typeof ret[0] !== 'undefined') {
cbFunc(cbReq, ret[0].p.v, ret);
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} else {
cbFunc(cbReq);
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}
} else {
var multiret = [];
for (var j = 0; j < ret.length; j++) {
multiret.push(ret[j].p.v);
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}
cbFunc(cbReq, multiret, ret);
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}
}
delete _dhtgetPendingMap[locator];
} else {
console.warn('_dhtgetProcessPending(): unknown locator ' + locator);
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}
}
function _dhtgetAbortPending(locator) {
if (_dhtgetPendingMap[locator]) {
for (var i = 0; i < _dhtgetPendingMap[locator].length; i++) {
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var cbFunc = _dhtgetPendingMap[locator][i].cbFunc;
var cbReq = _dhtgetPendingMap[locator][i].cbReq;
cbFunc(cbReq);
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}
delete _dhtgetPendingMap[locator];
} else {
console.warn('_dhtgetAbortPending(): unknown locator ' + locator);
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}
}
// get data from dht resource
// the value ["v"] is extracted from response and returned to callback
// null is passed to callback in case of an error
function dhtget(peerAlias, resource, multi, cbFunc, cbReq, timeoutArgs) {
//console.log('dhtget ' + peerAlias + ' ' + resource + ' ' + multi);
var locator = _dhtgetLocator(peerAlias, resource, multi);
if (_dhtgetPendingMap[locator]) {
_dhtgetAddPending(locator, cbFunc, cbReq);
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} else {
_dhtgetAddPending(locator, cbFunc, cbReq);
// limit the number of simultaneous dhtgets.
// this should leave some sockets for other non-blocking daemon requests.
if (_dhtgetsInProgress < _maxDhtgets) {
_dhtgetInternal(peerAlias, resource, multi, timeoutArgs);
} else {
// just queue the locator. it will be unqueue when some dhtget completes.
_queuedDhtgets.push(locator);
}
}
}
// decode shortened url
// the expanded url is returned to callback
// null is passed to callback in case of an error
function decodeShortURI(locator, cbFunc, cbReq, timeoutArgs) {
if (!locator) return;
if (parseInt(twisterVersion) < 93500) {
console.warn('can\'t fetch URI "' + req + '" — '
+ polyglot.t('daemon_is_obsolete', {versionReq: '0.9.35'}));
return;
}
if (_dhtgetPendingMap[locator]) {
_dhtgetAddPending(locator, cbFunc, cbReq);
} else {
_dhtgetAddPending(locator, cbFunc, cbReq);
// limit the number of simultaneous decodeshorturl's and dhtgets.
// this should leave some sockets for other non-blocking daemon requests.
if (_dhtgetsInProgress < _maxDhtgets) {
_decodeshorturlInternal(locator, timeoutArgs);
} else {
// just queue the locator. it will be unqueue when some dhtget completes.
_queuedDhtgets.push(locator);
}
}
}
function _dhtgetInternal(peerAlias, resource, multi, timeoutArgs) {
var locator = _dhtgetLocator(peerAlias, resource, multi);
_dhtgetsInProgress++;
argsList = [peerAlias, resource, multi];
if (typeof timeoutArgs !== 'undefined') {
argsList = argsList.concat(timeoutArgs);
}
twisterRpc('dhtget', argsList,
function(req, ret) {
_dhtgetsInProgress--;
_dhtgetProcessPending(req.locator, req.multi, ret);
_dhtgetDequeue();
}, {locator: locator, multi: multi},
function(req, ret) {
console.warn('RPC "dhtget" error: ' + (ret && ret.message ? ret.message : ret));
_dhtgetsInProgress--;
_dhtgetAbortPending(req);
_dhtgetDequeue();
}, locator
);
}
function _decodeshorturlInternal(locator, timeoutArgs) {
_dhtgetsInProgress++;
argsList = [locator];
if (typeof timeoutArgs !== 'undefined') {
argsList = argsList.concat(timeoutArgs);
}
twisterRpc('decodeshorturl', argsList,
function(req, ret) {
_dhtgetsInProgress--;
_dhtgetProcessPending(req, 'url', ret);
_dhtgetDequeue();
}, locator,
function(req, ret) {
console.warn('RPC "decodeshorturl" error: ' + (ret && ret.message ? ret.message : ret));
_dhtgetsInProgress--;
_dhtgetAbortPending(req);
_dhtgetDequeue();
}, locator
);
}
function _dhtgetDequeue() {
if (_queuedDhtgets.length) {
var locator = _queuedDhtgets.pop();
var locatorSplit = locator.split(';');
if (locatorSplit.length === 3) {
_dhtgetInternal(locatorSplit[0], locatorSplit[1], locatorSplit[2]);
} else {
_decodeshorturlInternal( locator )
}
}
}
// removes queued dhtgets (requests that have not been made to the daemon)
// this is used by user search dropdown to discard old users we are not interested anymore
function removeUserFromDhtgetQueue(peerAlias) {
var resources = ['profile', 'avatar']
for (var i = 0; i < resources.length; i++) {
var locator = _dhtgetLocator(peerAlias, resources[i], 's');
var locatorIndex = _queuedDhtgets.indexOf(locator);
if (locatorIndex > -1) {
_queuedDhtgets.splice(locatorIndex, 1);
delete _dhtgetPendingMap[locator];
}
}
}
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function removeUsersFromDhtgetQueue(users) {
for (var i = 0; i < users.length; i++) {
removeUserFromDhtgetQueue(users[i]);
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}
}
// store value at the dht resource
function dhtput(peerAlias, resource, multi, value, sig_user, seq, cbFunc, cbReq) {
twisterRpc('dhtput', [peerAlias, resource, multi, value, sig_user, seq],
function(req, ret) {
if (req.cbFunc)
req.cbFunc(req.cbReq, true);
}, {cbFunc: cbFunc, cbReq: cbReq},
function(req, ret) {
console.warn('RPC "dhtput" error: ' + (ret && ret.message ? ret.message : ret));
if (req.cbFunc)
req.cbFunc(req.cbReq, false);
}, {cbFunc: cbFunc, cbReq: cbReq}
);
}
// get something from profile and store it in elem.text or do callback
function getProfileResource(peerAlias, resource, elem, cbFunc, cbReq) {
var profile;
if (twister.profiles[peerAlias]) {
profile = twister.profiles[peerAlias];
} else {
profile = _getResourceFromStorage('profile:' + peerAlias);
if (profile)
twister.profiles[peerAlias] = profile;
}
if (profile) {
if (elem)
elem.text(profile[resource]);
if (cbFunc)
cbFunc(cbReq, profile[resource]);
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} else {
loadProfile(peerAlias,
function (peerAlias, req, res) {
if (req.elem)
req.elem.text(res[req.resource]);
if (typeof req.cbFunc === 'function')
req.cbFunc(req.cbReq, res[req.resource]);
},
{elem: elem, resource: resource, cbFunc: cbFunc, cbReq: cbReq}
);
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}
}
// get fullname and store it in elem.text
function getFullname(peerAlias, elem) {
elem.text(peerAlias); // fallback: set the peerAlias first in case the profile has no fullname
getProfileResource(peerAlias, 'fullname', undefined,
function(req, name) {
if (name && (name = name.trim()))
req.elem.text(name);
if (typeof twisterFollowingO !== 'undefined' && // FIXME delete this check when you fix client init sequence
($.Options.isFollowingMe.val === 'everywhere' || req.elem.hasClass('profile-name'))) {
// here we try to detect if peer follows us and then display it
if (twisterFollowingO.knownFollowers.indexOf(req.peerAlias) > -1) {
req.elem.addClass('isFollowing');
req.elem.attr('title', polyglot.t('follows you'));
} else if (twisterFollowingO.notFollowers.indexOf(req.peerAlias) === -1) {
if (twisterFollowingO.followingsFollowings[req.peerAlias] &&
twisterFollowingO.followingsFollowings[req.peerAlias].following) {
if (twisterFollowingO.followingsFollowings[req.peerAlias].following.indexOf(defaultScreenName) > -1) {
if (twisterFollowingO.knownFollowers.indexOf(req.peerAlias) === -1) {
twisterFollowingO.knownFollowers.push(req.peerAlias);
twisterFollowingO.save();
addPeerToFollowersList(getElem('.followers-modal .followers-list'), req.peerAlias, true);
$('.module.mini-profile .open-followers')
.attr('title', twisterFollowingO.knownFollowers.length.toString());
}
req.elem.addClass('isFollowing');
req.elem.attr('title', polyglot.t('follows you'));
}
} else {
loadFollowingFromDht(req.peerAlias, 1, [], 0,
function (req, following, seqNum) {
if (following.indexOf(defaultScreenName) > -1) {
if (twisterFollowingO.knownFollowers.indexOf(req.peerAlias) === -1) {
twisterFollowingO.knownFollowers.push(req.peerAlias);
addPeerToFollowersList(getElem('.followers-modal .followers-list'), req.peerAlias, true);
$('.module.mini-profile .open-followers')
.attr('title', twisterFollowingO.knownFollowers.length.toString());
}
req.elem.addClass('isFollowing');
req.elem.attr('title', polyglot.t('follows you'));
} else if (twisterFollowingO.notFollowers.indexOf(req.peerAlias) === -1)
twisterFollowingO.notFollowers.push(req.peerAlias);
twisterFollowingO.save();
}, {elem: req.elem, peerAlias: req.peerAlias}
);
}
}
}
}, {elem: elem, peerAlias: peerAlias}
);
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}
// get bio, format it as post message and store result to elem
function getBioToElem(peerAlias, elem) {
getProfileResource(peerAlias, 'bio', undefined, fillElemWithTxt, elem);
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}
// get tox address and store it in elem.text
function getTox(peerAlias, elem) {
getProfileResource(peerAlias, 'tox', false,
function(elem, val) {
if (val) {
elem.attr('href', 'tox:' + val);
elem.next().attr('data', val).attr('title', 'Copy to clipboard');
elem.parent().css('display', 'inline-block').parent().show();
}
}, elem
);
}
// get bitmessage address and store it in elem.text
function getBitmessage(peerAlias, elem) {
getProfileResource(peerAlias, 'bitmessage', false,
function(elem, val) {
if (val) {
elem.attr('href', 'bitmsg:' + val + '?action=add&label=' + peerAlias);
elem.next().attr('data', val).attr('title', 'Copy to clipboard');
elem.parent().css('display', 'inline-block').parent().show();
}
}, elem
);
}
// get location and store it in elem.text
function getLocation(peerAlias, elem) {
getProfileResource(peerAlias, 'location', elem);
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}
// get location and store it in elem.text
function getWebpage(peerAlias, elem) {
getProfileResource(peerAlias, 'url', elem,
function(elem, val) {
if (typeof(val) !== 'undefined') {
if (val.indexOf('://') < 0) {
val = 'http://' + val;
}
elem.attr('href', val);
}
}, elem
);
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}
function getGroupChatName(groupAlias, elem) {
twisterRpc('getgroupinfo', [groupAlias],
function(elem, ret) {
elem.text(ret.description);
}, elem,
function(req, ret) {
console.warn('RPC "getgroupinfo" error: ' + (ret && ret.message ? ret.message : ret));
req.elem.text(req.groupAlias);
}, {elem: elem, groupAlias: groupAlias}
);
}
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// we must cache avatar results to disk to lower bandwidth on
// other peers. dht server limits udp rate so requesting too much
// data will only cause new requests to fail.
function _getResourceFromStorage(locator) {
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var storage = $.localStorage;
if (storage.isSet(locator)) {
var storedResource = storage.get(locator);
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var curTime = new Date().getTime() / 1000;
// avatar is downloaded once per day FIXME why once per day? what about profiles?
// FIXME need to check what type of data is requested and what time is allowed for it
if (storedResource.time + 86400 > curTime) { // 3600 * 24
return storedResource.data;
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}
}
return null;
}
function _putResourceIntoStorage(locator, data) {
$.localStorage.set(locator, {
time: Math.trunc(new Date().getTime() / 1000),
data: data
});
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}
function cleanupStorage() {
var curTime = new Date().getTime() / 1000;
var storage = $.localStorage, keys = storage.keys(), item = '';
var delAvatars = delProfiles = 0;
for (var i = 0; i < keys.length; i++) {
item = keys[i];
// FIXME need to decide what time for type of data is allowed
if (item.substr(0, 7) === 'avatar:') {
if (storage.get(item).time + 86400 < curTime) { // 3600 * 24 hours
storage.remove(item);
delAvatars++;
//console.log('local storage item \'' + item + '\' was too old, deleted');
}
} else if (item.substr(0, 8) === 'profile:') {
if (storage.get(item).time + 86400 < curTime) { // 3600 * 24 hours
storage.remove(item);
delProfiles++;
//console.log('local storage item \'' + item + '\' was too old, deleted');
}
}
}
console.log('cleaning of storage is completed for ' + (new Date().getTime() / 1000 - curTime) + 's');
if (delAvatars) console.log(' ' + delAvatars + ' cached avatars was too old, deleted');
if (delProfiles) console.log(' ' + delProfiles + ' cached profiles was too old, deleted');
console.log(' ' + 'there was ' + i + ' items in total, now ' + (i - delAvatars - delProfiles));
}
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// get avatar and set it in img.attr("src")
// TODO rename to getAvatarImgToELem(), move nin theme related stuff to nin's theme_option.js
function getAvatar(peerAlias, img) {
if (!img.length)
return;
if (peerAlias === 'nobody') {
var avatar = 'img/tornado_avatar.png';
switch ($.Options.theme.val) {
case 'nin':
avatar = 'theme_nin/img/tornado_avatar.png';
break;
2 years ago
case 'nin_night':
avatar = 'theme_nin_night/img/tornado_avatar.png';
break;
case 'nin_original':
avatar = 'theme_nin_original/img/tornado_avatar.png';
break;
}
img.attr('src', avatar);
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return;
}
if (twister.avatars[peerAlias]) {
img.attr('src', twister.avatars[peerAlias].src);
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} else {
var data = _getResourceFromStorage('avatar:' + peerAlias);
if (data) {
if (typeof data !== 'object')
data = {src: data, version: 0};
switch (data.src.substr(0, 4)) {
case 'jpg/':
data.src = 'data:image/jpeg;base64,/9j/' + window.btoa(data.src.slice(4));
break;
case 'png/':
data.src = 'data:image/png;base64,' + window.btoa(data.src.slice(4));
break;
case 'gif/':
data.src = 'data:image/gif;base64,' + window.btoa(data.src.slice(4));
break;
}
twister.avatars[peerAlias] = data;
img.attr('src', data.src);
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} else {
loadAvatar(peerAlias,
function (peerAlias, req, res) {
req.attr('src', res);
},
img
);
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}
}
}
function loadProfile(peerAlias, cbFunc, cbReq) {
dhtget(peerAlias, 'profile', 's',
function(req, res, resRaw) {
if (!resRaw || typeof res !== 'object')
return;
res.version = parseInt(resRaw[0].p.seq);
if (!twister.profiles[req.peerAlias] || !twister.profiles[req.peerAlias].version
|| res.version > twister.profiles[req.peerAlias].version) {
console.log('got ' + req.peerAlias + '\'s profile version ' + res.version + ' — going to cache and redraw globally');
cacheProfile(req.peerAlias, res);
redrawProfile(req.peerAlias, res);
}
if (typeof req.cbFunc === 'function')
req.cbFunc(req.peerAlias, req.cbReq, res);
},
{peerAlias: peerAlias, cbFunc: cbFunc, cbReq: cbReq}
);
}
function loadAvatar(peerAlias, cbFunc, cbReq) {
dhtget(peerAlias, 'avatar', 's',
function(req, res, resRaw) {
if (!resRaw)
return;
if (!res)
res = 'img/genericPerson.png';
var version = parseInt(resRaw[0].p.seq);
if (!twister.avatars[req.peerAlias] || !twister.avatars[req.peerAlias].version
|| version > twister.avatars[req.peerAlias].version) {
console.log('got ' + req.peerAlias + '\'s avatar version ' + version + ' — going to cache and redraw globally');
cacheAvatar(req.peerAlias, res, version);
redrawAvatar(req.peerAlias, res);
}
if (typeof req.cbFunc === 'function')
req.cbFunc(req.peerAlias, req.cbReq, res);
},
{peerAlias: peerAlias, cbFunc: cbFunc, cbReq: cbReq}
);
}
function cacheProfile(peerAlias, req) {
var dat = {};
for (var i in req)
if (req[i])
dat[i] = req[i];
twister.profiles[peerAlias] = dat;
_putResourceIntoStorage('profile:' + peerAlias, dat);
}
function cacheAvatar(peerAlias, req, version) {
twister.avatars[peerAlias] = {src: req, version: version};
if (req === 'img/genericPerson.png')
return;
if (req.substr(0, 27) === 'data:image/jpeg;base64,/9j/') {
req = 'jpg/' + window.atob(req.slice(27));
} else {
var s = req.substr(0, 22);
if (s === 'data:image/png;base64,' || s === 'data:image/gif;base64,')
req = req.substr(11, 3) + '/' + window.atob(req.slice(22));
}
_putResourceIntoStorage('avatar:' + peerAlias, {src: req, version: version});
}
function saveProfile(peerAlias, req, cbFunc, cbReq, cbErrFunc, cbErrReq) {
if (twister.profiles[peerAlias] && twister.profiles[peerAlias].version)
req.version = ++twister.profiles[peerAlias].version;
else
req.version = 1;
cacheProfile(peerAlias, req);
var dat = {};
for (var i in req)
if (i !== 'version' && req[i])
dat[i] = req[i];
dhtput(peerAlias, 'profile', 's', dat,
peerAlias, req.version,
function (req, res) {
if (!res) {
if (typeof req.cbErrFunc === 'function')
req.cbErrFunc(req.cbErrReq);
return;
}
if (typeof req.cbFunc === 'function')
req.cbFunc(req.cbReq);
},
{cbFunc: cbFunc, cbReq: cbReq, cbErrFunc: cbErrFunc, cbErrReq: cbErrReq}
);
}
function saveAvatar(peerAlias, req, cbFunc, cbReq, cbErrFunc, cbErrReq) {
if (twister.avatars[peerAlias] && twister.avatars[peerAlias].version)
var version = ++twister.avatars[peerAlias].version;
else
var version = 1;
cacheAvatar(peerAlias, req, version);
dhtput(peerAlias, 'avatar', 's', req,
peerAlias, version,
function (req, res) {
if (!res) {
if (typeof req.cbErrFunc === 'function')
req.cbErrFunc(req.cbErrReq);
return;
}
if (typeof req.cbFunc === 'function')
req.cbFunc(req.cbReq);
},
{cbFunc: cbFunc, cbReq: cbReq, cbErrFunc: cbErrFunc, cbErrReq: cbErrReq}
);
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}
// get estimative for number of followers (use known peers of torrent tracker)
function getFollowers(peerAlias, elem) {
dhtget(peerAlias, 'tracker', 'm',
function(elem, ret) {
if (ret && ret.length && ret[0].followers) {
elem.text(ret[0].followers)
}
}, elem
);
}
function getPostsCount(peerAlias, elem) {
dhtget(peerAlias, 'status', 's',
function(req, v) {
var count = 0;
if (v && v.userpost) {
count = v.userpost.k + 1;
}
var oldCount = parseInt(req.elem.text());
if (!oldCount || count > oldCount) {
req.elem.text(count);
}
if (peerAlias === defaultScreenName && count) {
incLastPostId(v.userpost.k);
}
}, {peerAlias: peerAlias, elem: elem}
);
}
function getStatusTime(peerAlias, elem) {
dhtget(peerAlias, 'status', 's',
function (req, ret) {
if (!ret || !ret.userpost)
return;
req.elem.text(timeGmtToText(ret.userpost.time))
.closest('.latest-activity')
.attr('data-screen-name', req.peerAlias)
.attr('data-id', ret.userpost.k)
.attr('data-time', ret.userpost.time)
;
}, {peerAlias: peerAlias, elem: elem}
);
}
function getPostMaxAvailability(peerAlias, k, cbFunc, cbReq) {
twisterRpc('getpiecemaxseen', [peerAlias, k],
function(req, ret) {
req.cbFunc(req.cbReq, ret);
}, {cbFunc: cbFunc, cbReq: cbReq},
function(req, ret) {
console.warn('RPC "getpiecemaxseen" error: ' + (ret && ret.message ? ret.message : ret));
}
);
}
function checkPubkeyExists(peerAlias, cbFunc, cbReq) {
11 years ago
// pubkey is checked in block chain db.
// so only accepted registrations are reported (local wallet users are not)
twisterRpc('dumppubkey', [peerAlias],
function(req, ret) {
req.cbFunc(req.cbReq, ret.length > 0);
}, {cbFunc: cbFunc, cbReq: cbReq},
function(req, ret) {
console.warn('RPC "dumppubkey" error: ' + (ret && ret.message ? ret.message : ret));
alert(polyglot.t('error_connecting_to_daemon'));
}
);
11 years ago
}
// pubkey is obtained from block chain db.
// so only accepted registrations are reported (local wallet users are not)
// cbFunc is called as cbFunc(cbReq, pubkey)
11 years ago
// if user doesn't exist then pubkey.length == 0
function dumpPubkey(peerAlias, cbFunc, cbReq) {
if (_pubkeyMap[peerAlias]) {
if (cbFunc)
cbFunc(cbReq, _pubkeyMap[peerAlias]);
} else {
twisterRpc('dumppubkey', [peerAlias],
function (req, ret) {
if (ret.length > 0) {
_pubkeyMap[peerAlias] = ret;
}
if (req.cbFunc) {
req.cbFunc(req.cbReq, ret);
}
}, {cbFunc: cbFunc, cbReq: cbReq},
function (req, ret) {
console.warn('RPC "dumppubkey" error: ' + (ret && ret.message ? ret.message : ret));
alert(polyglot.t('error_connecting_to_daemon'));
}
);
}
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}
// privkey is obtained from wallet db
// so privkey is returned even for unsent transactions
function dumpPrivkey(peerAlias, cbFunc, cbReq) {
twisterRpc('dumpprivkey', [peerAlias],
function(req, ret) {
req.cbFunc(req.cbReq, ret);
}, {cbFunc: cbFunc, cbReq: cbReq},
function(req, ret) {
req.cbFunc(req.cbReq, '');
console.warn('user unknown — RPC "dumppubkey" error: ' + (ret && ret.message ? ret.message : ret));
}, {cbFunc: cbFunc, cbReq: cbReq}
);
11 years ago
}