sync/lib/database/channels.js

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var db = require("../database");
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var valid = require("../utilities").isValidChannelName;
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var fs = require("fs");
var path = require("path");
var Logger = require("../logger");
var tables = require("./tables");
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var Flags = require("../flags");
var util = require("../utilities");
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var blackHole = function () { };
function dropTable(name, callback) {
db.query("DROP TABLE `" + name + "`", callback);
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}
function initTables(name, owner, callback) {
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if (!valid(name)) {
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callback("Invalid channel name", null);
return;
}
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}
module.exports = {
init: function () {
},
/**
* Checks if the given channel name is registered
*/
isChannelTaken: function (name, callback) {
if (typeof callback !== "function") {
return;
}
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if (!valid(name)) {
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callback("Invalid channel name", null);
return;
}
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db.query("SELECT name FROM `channels` WHERE name=?",
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[name],
function (err, rows) {
if (err) {
callback(err, true);
return;
}
callback(null, rows.length > 0);
});
},
/**
* Looks up a channel
*/
lookup: function (name, callback) {
if (typeof callback !== "function") {
return;
}
if (!valid(name)) {
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callback("Invalid channel name", null);
return;
}
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db.query("SELECT * FROM `channels` WHERE name=?",
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[name],
function (err, rows) {
if (err) {
callback(err, null);
return;
}
if (rows.length === 0) {
callback("No such channel", null);
} else {
callback(null, rows[0]);
}
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});
},
/**
* Searches for a channel
*/
search: function (name, callback) {
if (typeof callback !== "function") {
return;
}
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db.query("SELECT * FROM `channels` WHERE name LIKE ?",
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["%" + name + "%"],
function (err, rows) {
if (err) {
callback(err, null);
return;
}
callback(null, rows);
});
},
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/**
* Searches for a channel by owner
*/
searchOwner: function (name, callback) {
if (typeof callback !== "function") {
return;
}
db.query("SELECT * FROM `channels` WHERE owner LIKE ?",
["%" + name + "%"],
function (err, rows) {
if (err) {
callback(err, null);
return;
}
callback(null, rows);
});
},
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/**
* Validates and registers a new channel
*/
register: function (name, owner, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (typeof name !== "string" || typeof owner !== "string") {
callback("Name and owner are required for channel registration", null);
return;
}
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if (!valid(name)) {
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callback("Invalid channel name. Channel names may consist of 1-30 " +
"characters a-z, A-Z, 0-9, -, and _", null);
return;
}
module.exports.isChannelTaken(name, function (err, taken) {
if (err) {
callback(err, null);
return;
}
if (taken) {
callback("Channel name " + name + " is already taken", null);
return;
}
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db.query("INSERT INTO `channels` " +
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"(`name`, `owner`, `time`) VALUES (?, ?, ?)",
[name, owner, Date.now()],
function (err, res) {
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if (err) {
callback(err, null);
return;
}
db.users.getGlobalRank(owner, function (err, rank) {
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if (err) {
callback(err, null);
return;
}
rank = Math.max(rank, 5);
module.exports.setRank(name, owner, rank, function (err) {
if (err) {
callback(err, null);
return;
}
callback(null, { name: name });
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});
});
});
});
},
/**
* Unregisters a channel
*/
drop: function (name, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (!valid(name)) {
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callback("Invalid channel name", null);
return;
}
db.query("DELETE FROM `channels` WHERE name=?", [name], function (err) {
module.exports.deleteBans(name, function (err) {
if (err) {
Logger.errlog.log("Failed to delete bans for " + name + ": " + err);
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}
});
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module.exports.deleteLibrary(name, function (err) {
if (err) {
Logger.errlog.log("Failed to delete library for " + name + ": " + err);
}
});
module.exports.deleteAllRanks(name, function (err) {
if (err) {
Logger.errlog.log("Failed to delete ranks for " + name + ": " + err);
}
});
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fs.unlink(path.join(__dirname, "..", "..", "chandump", name),
function (err) {
if (err && err.code !== "ENOENT") {
Logger.errlog.log("Deleting chandump failed:");
Logger.errlog.log(err);
}
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});
callback(err, !Boolean(err));
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});
},
/**
* Looks up channels registered by a given user
*/
listUserChannels: function (owner, callback) {
if (typeof callback !== "function") {
return;
}
db.query("SELECT * FROM `channels` WHERE owner=?", [owner],
function (err, res) {
if (err) {
callback(err, []);
return;
}
callback(err, res);
});
},
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/**
* Loads the channel from the database
*/
load: function (chan, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (!valid(chan.name)) {
callback("Invalid channel name", null);
return;
}
db.query("SELECT * FROM `channels` WHERE name=?", chan.name, function (err, res) {
if (err) {
callback(err, null);
return;
}
if (res.length === 0) {
callback("Channel is not registered", null);
return;
}
if (chan.dead) {
callback("Channel is dead", null);
return;
}
// Note that before this line, chan.name might have a different capitalization
// than the database has stored. Update accordingly.
chan.name = res[0].name;
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chan.uniqueName = chan.name.toLowerCase();
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chan.setFlag(Flags.C_REGISTERED);
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chan.logger.log("[init] Loaded channel from database");
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callback(null, true);
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});
},
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/**
* Looks up a user's rank
*/
getRank: function (chan, name, callback) {
if (typeof callback !== "function") {
return;
}
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if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
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db.query("SELECT * FROM `channel_ranks` WHERE name=? AND channel=?",
[name, chan],
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function (err, rows) {
if (err) {
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callback(err, -1);
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return;
}
if (rows.length === 0) {
callback(null, 1);
return;
}
callback(null, rows[0].rank);
});
},
/**
* Looks up multiple users' ranks at once
*/
getRanks: function (chan, names, callback) {
if (typeof callback !== "function") {
return;
}
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if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
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var replace = "(" + names.map(function () { return "?"; }).join(",") + ")";
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/* Last substitution is the channel to select ranks for */
names.push(chan);
db.query("SELECT * FROM `channel_ranks` WHERE name IN " +
replace + " AND channel=?", names,
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function (err, rows) {
if (err) {
callback(err, []);
return;
}
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callback(null, rows.map(function (r) { return r.rank; }));
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});
},
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/**
* Query all user ranks at once
*/
allRanks: function (chan, callback) {
if (typeof callback !== "function") {
return;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
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db.query("SELECT * FROM `channel_ranks` WHERE channel=?", [chan], callback);
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},
/**
* Updates a user's rank
*/
setRank: function (chan, name, rank, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
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if (rank < 2) {
module.exports.deleteRank(chan, name, callback);
return;
}
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if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
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db.query("INSERT INTO `channel_ranks` VALUES (?, ?, ?) " +
"ON DUPLICATE KEY UPDATE rank=?",
[name, rank, chan, rank, chan], callback);
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},
/**
* Removes a user's rank entry
*/
deleteRank: function (chan, name, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
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db.query("DELETE FROM `channel_ranks` WHERE name=? AND channel=?", [name, chan],
callback);
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},
/**
* Removes all ranks for a channel
*/
deleteAllRanks: function (chan, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
db.query("DELETE FROM `channel_ranks` WHERE channel=?", [chan], callback);
},
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/**
* Adds a media item to the library
*/
addToLibrary: function (chan, media, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
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var meta = JSON.stringify({
bitrate: media.meta.bitrate,
codec: media.meta.codec,
scuri: media.meta.scuri
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});
db.query("INSERT INTO `channel_libraries` " +
"(id, title, seconds, type, meta, channel) " +
"VALUES (?, ?, ?, ?, ?, ?) ON DUPLICATE KEY UPDATE id=id",
[media.id, media.title, media.seconds, media.type, meta, chan], callback);
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},
/**
* Retrieves a media item from the library by id
*/
getLibraryItem: function (chan, id, callback) {
if (typeof callback !== "function") {
return;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
db.query("SELECT * FROM `channel_libraries` WHERE id=? AND channel=?", [id, chan],
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function (err, rows) {
if (err) {
callback(err, null);
return;
}
if (rows.length === 0) {
callback("Item not in library", null);
} else {
callback(null, rows[0]);
}
});
},
/**
* Search the library by title
*/
searchLibrary: function (chan, search, callback) {
if (typeof callback !== "function") {
return;
}
db.query("SELECT * FROM `channel_libraries` WHERE title LIKE ? AND channel=?",
["%" + search + "%", chan], callback);
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},
/**
* Deletes a media item from the library
*/
deleteFromLibrary: function (chan, id, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
db.query("DELETE FROM `channel_libraries` WHERE id=? AND channel=?",
[id, chan], callback);
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},
/**
* Deletes all library entries for a channel
*/
deleteLibrary: function (chan, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
db.query("DELETE FROM `channel_libraries` WHERE channel=?", [chan], callback);
},
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/**
* Add a ban to the banlist
*/
ban: function (chan, ip, name, note, bannedby, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
db.query("INSERT INTO `channel_bans` (ip, name, reason, bannedby, channel) " +
"VALUES (?, ?, ?, ?, ?)",
[ip, name, note, bannedby, chan], callback);
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},
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/**
* Check if an IP address or range is banned
*/
isIPBanned: function (chan, ip, callback) {
if (typeof callback !== "function") {
return;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
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var range = util.getIPRange(ip);
var wrange = util.getWideIPRange(ip);
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db.query("SELECT * FROM `channel_bans` WHERE ip IN (?, ?, ?) AND channel=?",
[ip, range, wrange, chan],
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function (err, rows) {
callback(err, err ? false : rows.length > 0);
});
},
/**
* Check if a username is banned
*/
isNameBanned: function (chan, name, callback) {
if (typeof callback !== "function") {
return;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
db.query("SELECT * FROM `channel_bans` WHERE name=? AND channel=?", [name, chan],
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function (err, rows) {
callback(err, err ? false : rows.length > 0);
});
},
/**
* Lists all bans
*/
listBans: function (chan, callback) {
if (typeof callback !== "function") {
return;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
db.query("SELECT * FROM `channel_bans` WHERE channel=?", [chan], callback);
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},
/**
* Removes a ban from the banlist
*/
unbanId: function (chan, id, callback) {
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if (typeof callback !== "function") {
callback = blackHole;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
db.query("DELETE FROM `channel_bans` WHERE id=? AND channel=?",
[id, chan], callback);
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},
/**
* Removes all bans from a channel
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*/
deleteBans: function (chan, id, callback) {
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if (typeof callback !== "function") {
callback = blackHole;
}
if (!valid(chan)) {
callback("Invalid channel name", null);
return;
}
db.query("DELETE FROM `channel_bans` WHERE channel=?", [chan], callback);
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}
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};