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bug fixes, improvements, fix #13, fix #14

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This commit is contained in:
jomo
2014-11-23 21:53:42 +01:00
parent ebd8e18b29
commit e6481e3c73
5 changed files with 114 additions and 68 deletions
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4
modules/config.js
View File

@@ -4,9 +4,9 @@ var config = {
default_size: 160, // size to be used when no size given
local_cache_time: 3600, // seconds until we will check if the image changed. should be > 60 to prevent mojang 429 response
browser_cache_time: 3600, // seconds until browser will request image again
http_timeout: 1000, // ms until connection to mojang is dropped
http_timeout: 3000, // ms until connection to mojang is dropped
faces_dir: 'skins/faces/', // directory where faces are kept. should have trailing '/'
helms_dir: 'skins/helms/' // directory where helms are kept. should have trailing '/'
};
module.exports = config;
module.exports = config;

62
modules/helpers.js
View File

@@ -5,7 +5,7 @@ var skins = require('./skins');
// 0098cb60-fa8e-427c-b299-793cbd302c9a
var valid_uuid = /^([0-9a-f-]{32,36}|[a-zA-Z0-9_]{1,16})$/; // uuid|username
var hash_pattern = /([^\/]+)(?=\.\w{0,16}$)|((?:[a-z][a-z]*[0-9]+[a-z0-9]*))/;
var hash_pattern = /[0-9a-f]+$/;
function get_hash(url) {
return hash_pattern.exec(url)[0].toLowerCase();
@@ -14,28 +14,15 @@ function get_hash(url) {
// requests skin for +uuid+ and extracts face/helm if image hash in +details+ changed
// callback contains error, image hash
function store_images(uuid, details, callback) {
// get profile for +uuid+
networking.get_profile(uuid, function(err, profile) {
if (err === 0) {
// uuid does not exist
cache.save_hash(uuid, null);
callback(null, null);
} else if (err) {
// get skin_url for +uuid+
networking.get_skin_url(uuid, function(err, skin_url) {
if (err) {
callback(err, null);
} else {
var skinurl = null;
// Username handling
if (uuid.length <= 16) {
skinurl = "https://skins.minecraft.net/MinecraftSkins/" + uuid + ".png";
console.log(uuid + " is a username");
} else {
skinurl = skin_url(profile);
}
if (skinurl) {
console.log(uuid + " " + skinurl);
if (skin_url) {
console.log(uuid + " " + skin_url);
// set file paths
var hash = get_hash(skinurl);
var hash = get_hash(skin_url);
if (details && details.hash == hash) {
// hash hasn't changed
console.log(uuid + " hash has not changed");
@@ -47,7 +34,7 @@ function store_images(uuid, details, callback) {
var facepath = __dirname + '/../' + config.faces_dir + hash + ".png";
var helmpath = __dirname + '/../' + config.helms_dir + hash + ".png";
// download skin, extract face/helm
networking.skin_file(skinurl, facepath, helmpath, function(err) {
networking.skin_file(skin_url, facepath, helmpath, function(err) {
if (err) {
callback(err, null);
} else {
@@ -65,30 +52,14 @@ function store_images(uuid, details, callback) {
});
}
// exracts the skin url of a +profile+ object
// returns null when no url found (user has no skin)
function skin_url(profile) {
var url = null;
if (profile && profile.properties) {
profile.properties.forEach(function(prop) {
if (prop.name == 'textures') {
var json = Buffer(prop.value, 'base64').toString();
var props = JSON.parse(json);
url = props && props.textures && props.textures.SKIN && props.textures.SKIN.url || null;
}
});
}
return url;
}
// decides whether to get an image from disk or to download it
// callback contains error, status, hash
// the status gives information about how the image was received
// -1: error
// 0: cached as null
// 1: found on disk
// 2: profile requested/found, skin downloaded from mojang servers
// 3: profile requested/found, but it has not changed or no skin
// -1: "error"
// 0: "none" - cached as null
// 1: "cached" - found on disk
// 2: "downloaded" - profile downloaded, skin downloaded from mojang servers
// 3: "checked" - profile re-downloaded (was too old), but it has either not changed or has no skin
function get_image_hash(uuid, callback) {
cache.get_details(uuid, function(err, details) {
if (err) {
@@ -100,12 +71,17 @@ function get_image_hash(uuid, callback) {
callback(null, (details.hash ? 1 : 0), details.hash);
} else {
console.log(uuid + " uuid not known or too old");
console.log("details:");
console.log(details);
console.log("/details");
store_images(uuid, details, function(err, hash) {
if (err) {
callback(err, -1, details && details.hash);
} else {
console.log(uuid + " hash: " + hash);
callback(null, (hash != (details && details.hash) ? 2 : 3), hash);
var oldhash = details && details.hash;
var status = hash !== oldhash ? 2 : 3;
callback(null, status, hash);
}
});
}

78
modules/networking.js
View File

@@ -4,16 +4,60 @@ var skins = require('./skins');
var fs = require("fs");
var session_url = "https://sessionserver.mojang.com/session/minecraft/profile/";
var skins_url = "https://skins.minecraft.net/MinecraftSkins/";
var exp = {};
// download the Mojang profile for +uuid+
// callback contains error, profile object
exp.get_profile = function(uuid, callback) {
if (uuid.length <= 16) {
callback(null, null);
return;
// exracts the skin url of a +profile+ object
// returns null when no url found (user has no skin)
function extract_skin_url(profile) {
var url = null;
if (profile && profile.properties) {
profile.properties.forEach(function(prop) {
if (prop.name == 'textures') {
var json = Buffer(prop.value, 'base64').toString();
var props = JSON.parse(json);
url = props && props.textures && props.textures.SKIN && props.textures.SKIN.url || null;
}
});
}
return url;
}
// make a request to skins.miencraft.net
// the skin url is taken from the HTTP redirect
var get_username_url = function(name, callback) {
request.get({
url: skins_url + name + ".png",
timeout: config.http_timeout,
followRedirect: false
}, function(error, response, body) {
if (!error && response.statusCode == 301) {
// skin_url received successfully
console.log(name + " skin url received");
callback(null, response.headers.location);
} else if (error) {
callback(error, null);
} else if (response.statusCode == 404) {
// skin doesn't exist
console.log(name + " has no skin");
callback(0, null);
} else if (response.statusCode == 429) {
// Too Many Requests
// Never got this, seems like skins aren't limited
console.warn(name + " Too many requests");
console.warn(body);
callback(null, null);
} else {
console.error(name + " Unknown error:");
console.error(response);
console.error(body);
callback(null, null);
}
});
};
// make a request to sessionserver
// the skin_url is taken from the profile
var get_uuid_url = function(uuid, callback) {
request.get({
url: session_url + uuid,
timeout: config.http_timeout // ms
@@ -21,7 +65,7 @@ exp.get_profile = function(uuid, callback) {
if (!error && response.statusCode == 200) {
// profile downloaded successfully
console.log(uuid + " profile downloaded");
callback(null, JSON.parse(body));
callback(null, extract_skin_url(JSON.parse(body)));
} else if (error) {
callback(error, null);
} else if (response.statusCode == 204 || response.statusCode == 404) {
@@ -42,6 +86,22 @@ exp.get_profile = function(uuid, callback) {
});
};
var exp = {};
// download skin_url for +uuid+ (name or uuid)
// callback contains error, skin_url
exp.get_skin_url = function(uuid, callback) {
if (uuid.length <= 16) {
get_username_url(uuid, function(err, url) {
callback(err, url);
});
} else {
get_uuid_url(uuid, function(err, url) {
callback(err, url);
});
}
};
// downloads skin file from +url+
// stores face image as +facename+
// stores helm image as +helmname+