mirror of
https://github.com/azures04/crafatar.git
synced 2026-03-21 23:41:18 +01:00
348 lines
11 KiB
JavaScript
348 lines
11 KiB
JavaScript
var networking = require("./networking");
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var logging = require("./logging");
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var config = require("./config");
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var cache = require("./cache");
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var skins = require("./skins");
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var renders = require("./renders");
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var fs = require("fs");
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// 0098cb60-fa8e-427c-b299-793cbd302c9a
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var valid_id = /^([0-9a-f-A-F-]{32,36}|[a-zA-Z0-9_]{1,16})$/; // uuid|username
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var hash_pattern = /[0-9a-f]+$/;
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// gets the hash from the textures.minecraft.net +url+
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function get_hash(url) {
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return hash_pattern.exec(url)[0].toLowerCase();
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}
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function store_skin(id, profile, details, callback) {
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networking.get_skin_url(id, profile, function(url) {
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if (url) {
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var hash = get_hash(url);
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if (details && details.skin === hash) {
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cache.update_timestamp(id, hash);
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callback(null, hash);
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} else {
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logging.log(id + " new skin hash: " + hash);
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var facepath = __dirname + "/../" + config.faces_dir + hash + ".png";
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var helmpath = __dirname + "/../" + config.helms_dir + hash + ".png";
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fs.exists(facepath, function(exists) {
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if (exists) {
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logging.log(id + " skin already exists, not downloading");
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callback(null, hash);
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} else {
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networking.get_from(url, function(img, response, err) {
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if (err || !img) {
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callback(err, null);
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} else {
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skins.extract_face(img, facepath, function(err) {
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if (err) {
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logging.error(err);
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callback(err, null);
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} else {
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logging.log(id + " face extracted");
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skins.extract_helm(id, facepath, img, helmpath, function(err) {
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logging.log(id + " helm extracted");
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logging.debug(helmpath);
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callback(err, hash);
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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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} else {
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callback(null, null);
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}
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});
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}
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function store_cape(id, profile, details, callback) {
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networking.get_cape_url(id, profile, function(url) {
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if (url) {
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var hash = get_hash(url);
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if (details && details.cape === hash) {
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cache.update_timestamp(id, hash);
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callback(null, hash);
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} else {
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logging.log(id + " new cape hash: " + hash);
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var capepath = __dirname + "/../" + config.capes_dir + hash + ".png";
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fs.exists(capepath, function(exists) {
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if (exists) {
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logging.log(id + " cape already exists, not downloading");
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callback(null, hash);
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} else {
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networking.get_from(url, function(img, response, err) {
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if (err || !img) {
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logging.error(err);
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callback(err, null);
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} else {
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skins.save_image(img, capepath, function(err) {
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logging.log(id + " cape saved");
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callback(err, hash);
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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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} else {
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callback(null, null);
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}
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});
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}
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// downloads the images for +id+ while checking the cache
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// status based on +details+. +type+ specifies which
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// image type should be called back on
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// +callback+ contains the error buffer and image hash
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var currently_running = [];
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function callback_for(id, type, err, hash) {
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for (var i = 0; i < currently_running.length; i++) {
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var current = currently_running[i];
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if (current.id === id && current.type === type) {
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logging.debug(id + " now completing queued " + type + " request");
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current.callback(err, hash);
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currently_running.splice(i, 1); // remove from array
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i--;
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}
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}
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}
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function array_has_obj(arr, property, value) {
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for (var i = 0; i < arr.length; i++) {
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if (arr[i][property] === value) {
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return true;
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}
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}
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return false;
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}
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function store_images(id, details, type, callback) {
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var is_uuid = id.length > 16;
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var new_hash = {
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id: id,
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type: type,
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callback: callback
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};
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if (!array_has_obj(currently_running, "id", id)) {
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currently_running.push(new_hash);
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networking.get_profile((is_uuid ? id : null), function(err, profile) {
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if (err || (is_uuid && !profile)) {
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callback_for(id, type, err, null);
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} else {
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store_skin(id, profile, details, function(err, skin_hash) {
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cache.save_hash(id, skin_hash, null);
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callback_for(id, "skin", err, skin_hash);
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store_cape(id, profile, details, function(err, cape_hash) {
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cache.save_hash(id, skin_hash, cape_hash);
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callback_for(id, "cape", err, cape_hash);
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});
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});
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}
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});
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} else {
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logging.log(id + " ID already being processed, adding to queue");
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currently_running.push(new_hash);
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}
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}
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var exp = {};
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// returns true if the +id+ is a valid uuid or username
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// the id may be not exist, however
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exp.id_valid = function(id) {
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return valid_id.test(id);
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};
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// decides whether to get an image from disk or to download it
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// callback contains error, status, hash
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// the status gives information about how the image was received
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// -1: "error"
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// 0: "none" - cached as null
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// 1: "cached" - found on disk
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// 2: "downloaded" - profile downloaded, skin downloaded from mojang servers
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// 3: "checked" - profile re-downloaded (was too old), but it has either not changed or has no skin
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exp.get_image_hash = function(id, raw_type, callback) {
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cache.get_details(id, function(err, details) {
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var type = (details !== null ? (raw_type === "skin" ? details.skin : details.cape) : null);
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if (err) {
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callback(err, -1, null);
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} else {
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if (details && details.time + config.local_cache_time * 1000 >= new Date().getTime()) {
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logging.log(id + " id cached & recently updated");
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callback(null, (type ? 1 : 0), type);
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} else {
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if (details) {
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logging.log(id + " id cached, but too old");
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} else {
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logging.log(id + " id not cached");
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}
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store_images(id, details, raw_type, function(err, hash) {
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if (err) {
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callback(err, -1, details && type);
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} else {
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var status = details && (type === hash) ? 3 : 2;
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logging.debug(id + " old hash: " + (details && type));
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logging.log(id + " hash: " + hash);
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callback(null, status, hash);
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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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// handles requests for +id+ avatars with +size+
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// callback contains error, status, image buffer, hash
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// image is the user's face+helm when helm is true, or the face otherwise
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// for status, see get_image_hash
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exp.get_avatar = function(id, helm, size, callback) {
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logging.log("request: " + id);
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exp.get_image_hash(id, "skin", function(err, status, hash) {
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if (hash) {
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var facepath = __dirname + "/../" + config.faces_dir + hash + ".png";
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var helmpath = __dirname + "/../" + config.helms_dir + hash + ".png";
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var filepath = facepath;
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fs.exists(helmpath, function(exists) {
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if (helm && exists) {
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filepath = helmpath;
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}
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skins.resize_img(filepath, size, function(img_err, result) {
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if (img_err) {
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callback(img_err, -1, null, hash);
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} else {
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// we might have a hash although an error occured
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// (e.g. Mojang servers not reachable, using outdated hash)
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callback(err, (err ? -1 : status), result, hash);
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}
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});
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});
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} else {
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// hash is null when the id has no skin
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callback(err, status, null, null);
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}
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});
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};
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// handles requests for +id+ skins
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// callback contains error, hash, image buffer
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exp.get_skin = function(id, callback) {
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logging.log(id + " skin request");
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exp.get_image_hash(id, "skin", function(err, status, hash) {
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var skinpath = __dirname + "/../" + config.skins_dir + hash + ".png";
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fs.exists(skinpath, function (exists) {
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if (exists) {
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logging.log(id + " skin already exists, not downloading");
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skins.open_skin(id, skinpath, function(err, img) {
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callback(err, hash, img);
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});
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} else {
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networking.save_texture(id, hash, skinpath, function(err, img) {
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callback(err, hash, img);
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});
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}
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});
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});
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};
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function get_type(helm, body) {
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var text = body ? "body" : "head";
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return helm ? text + "helm" : text;
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}
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// handles creations of skin renders
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// callback contanis error, hash, image buffer
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exp.get_render = function(id, scale, helm, body, callback) {
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exp.get_skin(id, function(err, hash, img) {
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if (!hash) {
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callback(err, -1, hash, null);
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return;
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}
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var renderpath = __dirname + "/../" + config.renders_dir + hash + "-" + scale + "-" + get_type(helm, body) + ".png";
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fs.exists(renderpath, function(exists) {
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if (exists) {
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renders.open_render(id, renderpath, function(err, img) {
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callback(err, 1, hash, img);
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});
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return;
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} else {
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if (!img) {
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callback(err, 0, hash, null);
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return;
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}
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renders.draw_model(id, img, scale, helm, body, function(err, img) {
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if (err) {
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callback(err, -1, hash, null);
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} else if (!img) {
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callback(null, 0, hash, null);
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} else {
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fs.writeFile(renderpath, img, "binary", function(err) {
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if (err) {
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logging.log(err);
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}
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callback(null, 2, hash, img);
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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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// handles requests for skin of the +id+
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// callback contains error, hash, image buffer
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exp.get_skin = function(id, callback) {
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logging.log(id + " skin request");
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exp.get_image_hash(id, "skin", function(err, status, hash) {
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var skinpath = __dirname + "/../" + config.skins_dir + hash + ".png";
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fs.exists(skinpath, function(exists) {
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if (exists) {
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logging.log("skin already exists, not downloading");
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skins.open_skin(id, skinpath, function(err, img) {
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callback(err, hash, img);
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});
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} else {
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networking.save_texture(id, hash, skinpath, function(err, response, img) {
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callback(err, hash, img);
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});
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}
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});
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});
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};
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// handles requests for +id+ capes
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// callback contains error, hash, image buffer
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exp.get_cape = function(id, callback) {
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logging.log(id + " cape request");
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exp.get_image_hash(id, "cape", function(err, status, hash) {
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if (!hash) {
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callback(err, null, null);
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return;
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}
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var capepath = __dirname + "/../" + config.capes_path + hash + ".png";
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fs.exists(capepath, function(exists) {
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if (exists) {
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logging.log("cape already exists, not downloading");
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skins.open_skin(id, capepath, function(err, img) {
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callback(err, hash, img);
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});
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} else {
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networking.save_texture(id, hash, capepath, function(err, response, img) {
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if (response && response.statusCode === 404) {
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callback(err, hash, null);
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} else {
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callback(err, hash, img);
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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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module.exports = exp;
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