mirror of
https://github.com/azures04/crafatar.git
synced 2026-03-21 23:41:18 +01:00
77 lines
2.4 KiB
JavaScript
77 lines
2.4 KiB
JavaScript
var logging = require("../logging");
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var helpers = require("../helpers");
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var config = require("../config");
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var skins = require("../skins");
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var cache = require("../cache");
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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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function handle_default(http_status, img_status, userId, size, def, callback) {
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if (def && def !== "steve" && def !== "alex") {
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callback(http_status, img_status, def);
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} else {
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def = def || skins.default_skin(userId);
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skins.resize_img("public/images/" + def + ".png", size, function(err, image) {
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callback(http_status, img_status, image);
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});
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}
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}
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// GET avatar request
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module.exports = function(req, callback) {
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var userId = (req.url.path_list[2] || "").split(".")[0];
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var size = parseInt(req.url.query.size) || config.default_size;
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var def = req.url.query.default;
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var helm = req.url.query.hasOwnProperty("helm");
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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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callback(422, 0, "Invalid Size");
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return;
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} else if (!helpers.id_valid(userId)) {
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callback(422, 0, "Invalid ID");
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return;
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}
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// strip dashes
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userId = userId.replace(/-/g, "");
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logging.debug(req.id, "userid:", userId);
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try {
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helpers.get_avatar(req.id, userId, helm, size, function(err, status, image, hash) {
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logging.log(req.id, "storage type:", human_status[status]);
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if (err) {
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logging.error(req.id, err);
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if (err.code === "ENOENT") {
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// no such file
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cache.remove_hash(req.id, userId);
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}
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}
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etag = image && hash && hash.substr(0, 32) || "none";
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var matches = req.headers["if-none-match"] === '"' + etag + '"';
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if (image) {
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var http_status = 200;
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if (err) {
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http_status = 503;
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}
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logging.debug(req.id, "etag:", req.headers["if-none-match"]);
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logging.debug(req.id, "matches:", matches);
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callback(matches ? 304 : http_status, status, image);
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} else {
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handle_default(matches ? 304 : 200, status, userId, size, def, callback);
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}
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});
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} catch(e) {
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logging.error(req.id, "error:", e.stack);
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handle_default(500, -1, userId, size, def, callback);
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}
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}; |