1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
package server;
import sys.FileSystem;
import js.node.Buffer;
import haxe.io.Path;
import js.node.Fs;
import js.node.Https;
import js.node.Http;
import js.node.url.URL;
import js.node.http.IncomingMessage;
import js.node.http.ServerResponse;
import js.node.http.ClientRequest;
import js.node.Path as JsPath;
using StringTools;
class HttpServer {
static final mimeTypes = [
"html" => "text/html",
"js" => "text/javascript",
"css" => "text/css",
"json" => "application/json",
"png" => "image/png",
"jpg" => "image/jpg",
"gif" => "image/gif",
"svg" => "image/svg+xml",
"ico" => "image/x-icon",
"wav" => "audio/wav",
"mp3" => "audio/mpeg",
"mp4" => "video/mp4",
"woff" => "application/font-woff",
"ttf" => "application/font-ttf",
"eot" => "application/vnd.ms-fontobject",
"otf" => "application/font-otf",
"wasm" => "application/wasm"
];
static var dir:String;
static var customDir:String;
static var hasCustomRes = false;
static var allowedLocalFiles:Map<String, Bool> = [];
static var allowLocalRequests = false;
public static function init(dir:String, ?customDir:String, allowLocalRequests:Bool):Void {
HttpServer.dir = dir;
if (customDir == null) return;
HttpServer.customDir = customDir;
hasCustomRes = FileSystem.exists(customDir);
HttpServer.allowLocalRequests = allowLocalRequests;
}
public static function serveFiles(req:IncomingMessage, res:ServerResponse):Void {
var url = req.url;
if (url == "/") url = "/index.html";
var filePath = dir + url;
if (allowLocalRequests && req.connection.remoteAddress == req.connection.localAddress
|| allowedLocalFiles[url]) {
if (serveLocalFile(res, url)) return;
}
if (!isChildOf(dir, filePath)) {
res.statusCode = 500;
var rel = JsPath.relative(dir, filePath);
res.end('Error getting the file: No access to $rel.');
return;
}
if (url.startsWith("/proxy")) {
if (!proxyUrl(req, res)) res.end('Cannot proxy ${req.url}');
return;
}
if (hasCustomRes) {
final path = customDir + url;
if (Fs.existsSync(path)) {
filePath = path;
if (FileSystem.isDirectory(filePath)) {
filePath = Path.addTrailingSlash(filePath) + "index.html";
}
}
}
Fs.readFile(filePath, (err:Dynamic, data:Buffer) -> {
if (err != null) {
readFileError(err, res, filePath);
return;
}
final ext = Path.extension(filePath).toLowerCase();
res.setHeader("Content-Type", getMimeType(ext));
if (ext == "html") {
// replace ${textId} to localized strings
data = cast localizeHtml(data.toString(), req.headers["accept-language"]);
}
res.end(data);
});
}
static function readFileError(err:Dynamic, res:ServerResponse, filePath:String):Void {
if (err.code == "ENOENT") {
res.statusCode = 404;
var rel = JsPath.relative(dir, filePath);
res.end('File $rel not found.');
} else {
res.statusCode = 500;
res.end('Error getting the file: $err.');
}
}
static function serveLocalFile(res:ServerResponse, filePath:String):Bool {
final ext = Path.extension(filePath).toLowerCase();
if (ext != "mp4" && ext != "mp3" && ext != "wav") return false;
if (!Fs.existsSync(filePath)) return false;
allowedLocalFiles[filePath] = true;
Fs.readFile(filePath, (err:Dynamic, data:Buffer) -> {
if (err != null) {
readFileError(err, res, filePath);
return;
}
res.setHeader("Content-Type", getMimeType(ext));
res.end(data);
});
return true;
}
static final matchLang = ~/^[A-z]+/;
static final matchVarString = ~/\${([A-z_]+)}/g;
static function localizeHtml(data:String, lang:String):String {
if (lang != null && matchLang.match(lang)) {
lang = matchLang.matched(0);
} else lang = "en";
data = matchVarString.map(data, (regExp) -> {
final key = regExp.matched(1);
return Lang.get(lang, key);
});
return data;
}
static function proxyUrl(req:IncomingMessage, res:ServerResponse):Bool {
final url = req.url.replace("/proxy?url=", "");
final proxy = proxyRequest(url, req, res, proxyReq -> {
final url = proxyReq.headers["location"];
if (url == null) return false;
final proxy2 = proxyRequest(url, req, res, proxyReq -> false);
if (proxy2 == null) {
res.end('Proxy error for redirected $url');
return true;
}
req.pipe(proxy2, {end: true});
return true;
});
if (proxy == null) return false;
req.pipe(proxy, {end: true});
return true;
}
static function proxyRequest(
url:String, req:IncomingMessage, res:ServerResponse,
fn:(req:IncomingMessage)->Bool
):Null<ClientRequest> {
final url = try {
new URL(js.Node.global.decodeURI(url));
} catch (e) return null;
if (url.host == req.headers["host"]) return null;
if (url.host.contains(":")) url.host = url.host.split(":")[0];
final options = {
host: url.host,
port: Std.parseInt(url.port),
path: url.pathname + url.search,
method: req.method
};
final request = url.protocol == "https:" ? Https.request : Http.request;
final proxy = request(options, proxyReq -> {
if (fn(proxyReq)) return;
proxyReq.headers["Content-Type"] = "application/octet-stream";
res.writeHead(proxyReq.statusCode, proxyReq.headers);
proxyReq.pipe(res, {end: true});
});
proxy.on("error", err -> {
res.end('Proxy error for ${url.href}');
});
return proxy;
}
static function isChildOf(parent:String, child:String):Bool {
final rel = JsPath.relative(parent, child);
return rel.length > 0 && !rel.startsWith('..') && !JsPath.isAbsolute(rel);
}
static function getMimeType(ext:String):String {
final contentType = mimeTypes[ext];
if (contentType == null) return "application/octet-stream";
return contentType;
}
}
|
