mirror of
https://github.com/azures04/crafatar.git
synced 2026-03-22 07:51:17 +01:00
100 lines
3.0 KiB
JavaScript
100 lines
3.0 KiB
JavaScript
var router = require("express").Router();
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var networking = require("../modules/networking");
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var logging = require("../modules/logging");
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var helpers = require("../modules/helpers");
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var config = require("../modules/config");
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var skins = require("../modules/skins");
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var human_status = {
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0: "none",
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1: "cached",
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2: "downloaded",
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3: "checked",
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"-1": "error"
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};
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/* GET avatar request. */
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router.get("/:uuid.:ext?", function(req, res) {
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var uuid = req.params.uuid;
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var size = parseInt(req.query.size) || config.default_size;
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var def = req.query.default;
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var helm = req.query.hasOwnProperty("helm");
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var start = new Date();
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var etag = null;
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// Prevent app from crashing/freezing
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if (size < config.min_size || size > config.max_size) {
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// "Unprocessable Entity", valid request, but semantically erroneous:
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// https://tools.ietf.org/html/rfc4918#page-78
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res.status(422).send("422 Invalid size");
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return;
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} else if (!helpers.uuid_valid(uuid)) {
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res.status(422).send("422 Invalid UUID");
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return;
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}
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// strip dashes, to lower case
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uuid = uuid.replace(/-/g, "").toLowerCase();
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try {
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helpers.get_avatar(uuid, helm, size, function(err, status, image, hash) {
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logging.log(uuid + " - " + human_status[status]);
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if (err) {
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logging.error(err);
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}
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etag = hash && hash.substr(0, 32) || "none";
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var matches = req.get("If-None-Match") == "'" + etag + "'";
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if (image) {
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var http_status = 200;
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if (matches) {
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http_status = 304;
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} else if (err) {
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http_status = 503;
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}
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logging.debug("Etag: " + req.get("If-None-Match"));
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logging.debug("matches: " + matches);
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logging.log("status: " + http_status);
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sendimage(http_status, status, image);
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} else {
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handle_default(404, status);
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}
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});
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} catch(e) {
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logging.error("Error!");
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logging.error(e);
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handle_default(500, status);
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}
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function handle_default(http_status, img_status) {
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if (def && def != "steve" && def != "alex") {
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res.writeHead(301, {
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"Cache-Control": "max-age=" + config.browser_cache_time + ", public",
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"Response-Time": new Date() - start,
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"X-Storage-Type": human_status[img_status],
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"Access-Control-Allow-Origin": "*",
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"Location": def
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});
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res.end();
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} else {
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def = def || skins.default_skin(uuid);
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skins.resize_img("public/images/" + def + ".png", size, function(err, image) {
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sendimage(http_status, img_status, image);
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});
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}
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}
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function sendimage(http_status, img_status, image) {
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res.writeHead(http_status, {
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"Content-Type": "image/png",
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"Cache-Control": "max-age=" + config.browser_cache_time + ", public",
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"Response-Time": new Date() - start,
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"X-Storage-Type": human_status[img_status],
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"Access-Control-Allow-Origin": "*",
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"Etag": '"' + etag + '"'
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});
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res.end(http_status == 304 ? null : image);
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}
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});
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module.exports = router; |