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plotserver.js
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var fs = require("fs");
var url = require("url");
var http = require("http");
var mime = require("mime");
var utils = require("util");
var posix = require('posix');
var logger = require("./logger");
var common = require("./static/common");
var httpserver = require("./httpserver");
//
// ===============================================
//
// HttpGet
//
// ===============================================
//
httpNotFound = function(response) {
response.writeHead(404, {"Content-Type": "text/text"});
response.end("File not found.\n");
};
httpInternalError = function(response) {
response.writeHead(500, {"Content-Type": "text/text"});
response.end("An internal error occured.\n");
};
createFullPath = function(fullPath, callback) {
if (fullPath.indexOf("/") == -1) {
callback(null);
return;
}
var path = require("path");
var fs = require("fs");
var parts = path.dirname(path.normalize(fullPath)).split("/");
var working = "./";
var pathList = [];
var exists = null;
if (fs.exists)
exists = fs.exists;
else
exists = path.exists;
for(var i = 0, max = parts.length; i < max; i++) {
working = path.join(working, parts[i]);
pathList.push(working);
}
var recursePathList = function recursePathList(paths) {
if(0 === paths.length) {
callback(null);
return ;
}
var working = paths.shift();
try {
exists(working, function(exists) {
if(!exists) {
try {
fs.mkdir(working, 0755, function() {
recursePathList(paths);
});
}
catch(e) {
callback(new Error("Failed to create path: " + working + " with " + e.toString()));
}
}
else {
recursePathList(paths);
}
});
}
catch(e) {
callback(new Error("Invalid path specified: " + working));
}
}
if(0 === pathList.length)
callback(new Error("Path list was empty"));
else
recursePathList(pathList);
};
secureReadFile = function(path, arg1, arg2) {
var staticPath = fs.realpathSync("./static");
var publicPath = fs.realpathSync("./public");
var resolvedPath = fs.realpathSync(path);
if (resolvedPath.indexOf(staticPath) === 0 || resolvedPath.indexOf(publicPath) === 0) {
fs.readFile.apply(this, arguments);
} else {
if (typeof(arg2) == "function")
arg2("error");
else if (typeof(arg1) == "function")
arg1("error");
}
}
var HttpGet = {};
HttpGet.static = function(request, response) {
secureReadFile(request.path,
function (err, fileContents) {
if (err)
return httpNotFound(response);
var type = mime.lookup(request.path);
response.writeHead(200, {"Content-Type": type});
response.end(fileContents);
log.debug("Sending static file " + request.path + " of type " + type + ".");
});
};
HttpGet.list = function(request, response) {
fs.readdir(request.path, function(err, files) {
if (err)
return httpInternalError(response);
var html = "<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01//EN' 'http://www.w3.org/TR/html4/strict.dtd'>";
html += "<html><head><title>Index of " + request.path.substring("public".length) + "</title>";
html += "<meta http-equiv='Content-Type' content='text/html;charset=utf-8'></head>";
html += "<body style='padding: 20px;'>";
html += "<h1>Index of " + request.path.substring("public".length) + "</h1>";
if (request.path[request.path.length - 1] != "/")
request.path += "/";
if (request.originalUrl[request.originalUrl.length - 1] != "/")
request.originalUrl += "/";
files.sort();
for (var i in files) {
var file = files[i];
if (file.match(/.options$/) != null)
continue;
stat = fs.statSync(request.path + file);
if (stat != undefined && stat.isDirectory())
statType = "dir";
else
statType = "file";
html += "<li><a class='" + statType + "' href='" + request.originalUrl + file + "'>" + file + "</a><br/>";
}
html += "</body></html>";
response.writeHead(200, {"Content-Type": "text/html"});
response.end(html);
});
};
HttpGet.get = function(request, response) {
fs.stat(request.path, function(err, stat) {
log.debug("stat err" + err);
if (stat != undefined && stat.isDirectory()) {
log.debug("dir");
} else {
log.debug("file");
secureReadFile(request.path, "utf8", function (err, fileContents) {
var functionName = request.urls.query["jsonp"];
var json = "";
if (err) {
json = "'NOT FOUND'";
log.debug("Editing new file " + request.path + ".");
} else {
json = JSON.stringify(Format.parse(fileContents));
log.debug("Sending jsonified file " + request.path + ".");
}
var js = functionName + "(" + json + ");";
response.writeHead(200, {"Content-Type": "text/javascript"});
response.end(js);
});
}
});
};
HttpGet.getOptions = function(request, response) {
fs.stat(request.path + ".options", function(err, stat) {
if (err)
return httpInternalError(response);
if (stat != undefined && stat.isDirectory()) {
log.debug("dir");
} else {
log.debug("file");
secureReadFile(request.path + ".options", "utf8", function (err, fileContents) {
var functionName = request.urls.query["jsonp"];
var js = "";
if (err) {
log.debug("Editing new file " + request.path + ".");
js = functionName + "(null);";
} else {
js = functionName + "(" + fileContents + ");";
log.debug("Sending jsonified options file " + request.path + ".");
}
response.writeHead(200, {"Content-Type": "text/javascript"});
response.end(js);
});
}
});
};
HttpGet.download = function(request, response) {
secureReadFile(request.path, "utf8",
function (err, fileContents) {
if (err)
return httpNotFound(response);
response.writeHead(200, {"Content-Type": "text/text"});
response.end(fileContents);
log.debug("Sending data.");
}
);
};
HttpGet.poll = function(request, response) {
log.debug("Polling...");
fs.watchFile(request.path, { persistent: true, interval: 1000 }, function (curr, prev) {
log.debug("File changed!");
HttpGet.get(request, response);
});
};
HttpGet.set = function(request, response) {
var fileContents = request.urls.query["data"];
var data = Format.parse(fileContents);
var functionName = request.urls.query["jsonp"];
if (!Model.verify(data)) {
var json = JSON.stringify("Error: The data you sent me in the HTTP POST request is malformed. Accepted format: k1,v1 \\n k2,v2 \\n ...\n");
var js = functionName + "(" + json + ");";
response.writeHead(200, {"Content-Type": "text/javascript"});
response.end(js);
return;
}
log.debug("Path: " + request.path);
createFullPath(request.path, function(err) {
if (err) {
log.debug("Create path failed. Reason: " + err);
var json = JSON.stringify("Error: Create path failed. Reason: " + err);
var js = functionName + "(" + json + ");";
response.writeHead(200, {"Content-Type": "text/javascript"});
response.end(js);
return;
}
fileContents = Format.serialize(data);
fs.writeFile(request.path, fileContents, function(err) {
if (err) {
log.debug("File write failed. Reason: " + err);
var json = JSON.stringify("Error: File write failed. Reason: " + err);
var js = functionName + "(" + json + ");";
response.writeHead(200, {"Content-Type": "text/javascript"});
response.end(js);
return;
}
var json = JSON.stringify("OK");
var js = functionName + "(" + json + ");";
response.writeHead(200, {"Content-Type": "text/javascript"});
response.end(js);
});
});
};
HttpGet.delete = function(request, response) {
// check to make sure the file exists
fs.stat(request.path, function(err, stat) {
if (err) {
return httpNotFound(response);
} else {
fs.unlink(request.path, function (err) {
if (err) {
log.debug("File delete failed at " + request.path + ", reason: " + err);
response.writeHead(500, {"Content-Type": "text/text"});
response.end("File delete failed, reason: " + err + ".\n");
} else {
log.debug("Deleted " + request.path);
response.writeHead(200, {"Content-Type": "text/text"});
response.end("File deleted.\n");
}
});
}
});
};
HttpGet.default = function(request, response) {
fs.stat(request.path, function(err, stat) {
if (err || !stat.isDirectory()) {
// browser is requesting the ajax client application
request.path = "static/client.html";
HttpGet.static(request, response);
} else {
// list directory
HttpGet.list(request, response);
}
});
};
//
// ===============================================
//
// HttpPost
//
// ===============================================
//
var HttpPost = {};
HttpPost.update = function(request, response) {
var updateData = Format.parse(request.postData);
if (!Model.verify(updateData)) {
response.writeHead(400, {"Content-Type": "text/text"});
response.end("The data you sent me in the HTTP POST request is malformed. Accepted format: k1,v1 \\n k2,v2 \\n ...\n");
return;
}
log.debug("Updating data at " + request.path + " with " + utils.inspect(updateData));
createFullPath(request.path, function(err) {
if (err) {
log.debug("Create path failed. Reason: " + err);
var json = JSON.stringify("Error: Create path failed. Reason: " + err);
var js = functionName + "(" + json + ");";
response.writeHead(200, {"Content-Type": "text/javascript"});
response.end(js);
return;
}
secureReadFile(request.path, "utf8", function (err, fileContents) {
try {
var newFileContents = "";
if (err) {
newFileContents = Format.serialize(updateData);
} else {
var data = Format.parse(fileContents);
Model.patch(data, updateData);
newFileContents = Format.serialize(data);
}
fs.writeFile(request.path, newFileContents, function(err) {
if (err) {
log.debug("File write failed. Reason: " + err);
response.writeHead(500, {"Content-Type": "text/text"});
response.end("File write failed. Reason: " + err + "\n");
} else {
response.writeHead(200, {"Content-Type": "text/text"});
response.end("File written.\n");
log.info("user_activity " + request.path.split("/")[1]);
}
});
} catch(err) {
log.debug(err);
}
});
});
};
HttpPost.set = function(request, response) {
var data = Format.parse(request.postData);
log.debug(data);
if (!Model.verify(data)) {
response.writeHead(400, {"Content-Type": "text/text"});
response.end("The data you sent me in the HTTP POST request is malformed. Accepted format: k1,v1 \\n k2,v2 \\n ...\n");
return;
}
log.debug("Path: " + request.path);
createFullPath(request.path, function(err) {
if (err) {
log.debug("Create path failed. Reason: " + err);
var json = JSON.stringify("Error: Create path failed. Reason: " + err);
var js = functionName + "(" + json + ");";
response.writeHead(200, {"Content-Type": "text/javascript"});
response.end(js);
return;
}
fileContents = Format.serialize(data);
fs.writeFile(request.path, fileContents, function(err) {
if (err) {
log.debug("File write failed. Reason: " + err);
response.writeHead(500, {"Content-Type": "text/text"});
response.end("File write failed. Reason: " + err + "\n");
} else {
response.writeHead(200, {"Content-Type": "text/text"});
response.end("File written.\n");
log.info("user_activity " + request.path.split("/")[1]);
}
});
});
};
HttpPost.setOptions = function(request, response) {
var path = request.path + ".options";
log.debug("Path: " + path);
createFullPath(path, function(err) {
if (err) {
log.debug("Create path failed. Reason: " + err);
var json = JSON.stringify("Error: Create path failed. Reason: " + err);
var js = functionName + "(" + json + ");";
response.writeHead(200, {"Content-Type": "text/javascript"});
response.end(js);
return;
}
fs.writeFile(path, request.postData, function(err) {
if (err) {
log.debug("File write failed. Reason: " + err);
response.writeHead(500, {"Content-Type": "text/text"});
response.end("File write failed. Reason: " + err + "\n");
} else {
response.writeHead(200, {"Content-Type": "text/text"});
response.end("Options written.\n");
}
});
});
};
HttpPost.default = function(request, response) {
response.writeHead(500, {"Content-Type": "text/text"});
response.end("Specify set or update in the URL (POST)!\n");
};
function getUsername(cookie) {
var prefix = "authtoken=\"";
var begin = cookie.indexOf(prefix);
if (begin < 0)
return;
begin += prefix.length;
var end = cookie.indexOf("-staff-", begin);
if (end < 0)
return;
var username = cookie.substring(begin, end);
return username;
}
function logUsername(request) {
try {
if (!request.headers["cookie"])
return;
var username = getUsername(request.headers["cookie"]);
log.info("request from user " + username);
} catch(err) { }
}
function dropToUser(username) {
var pwnam = posix.getpwnam(username);
posix.setgid(pwnam.gid);
posix.setuid(pwnam.uid);
}
//
// ===============================================
//
// Main
//
// ===============================================
//
var log = logger.create();
if (process.argv.length != 3) {
console.log("node plotserver.js <configuration_file>");
process.exit(1);
}
var configFile = process.argv[2];
var config = require("./" + configFile);
if ("godAuth" in config.settings)
var secrets = require("./config/secrets");
if (config.settings.log.console)
log.addEndpoint(logger.endpoints.console(config.settings.log.console));
if (config.settings.log.dailyLogFile)
log.addEndpoint(logger.endpoints.dailyLogFile(config.settings.log.dailyLogFile));
if (config.settings.log.scribe)
log.addEndpoint(logger.endpoints.scribe(config.settings.log.scribe));
var port = config.settings.httpPort;
if ("https" in config.settings && config.settings.https.redirectHttp) {
// Redirect to https
console.log('Setting up HTTP to HTTPS redirect');
http.createServer(function (req, res) {
redirectUrl = config.settings.urlBase + req.url;
res.writeHead(301, {'Location': redirectUrl});
res.end("<a href='" + redirectUrl + "'>" + redirectUrl + "</a>");
}).listen(config.settings.httpPort);
port = config.settings.https.port;
}
var serverSettings = {
"removeTrailingSlashes": true,
"catchExceptions": true,
"port": port,
"logger": log,
"url" : config.settings.url
};
if ("https" in config.settings && "options" in config.settings.https){
serverSettings.httpsOptions = config.settings.https.options;
}
if ("godAuth" in config.settings) {
serverSettings.godAuth = config.settings.godAuth;
serverSettings.godAuth.secret = secrets.godAuthSecret;
serverSettings.godAuth.bypassUsername = secrets.godAuthBypassUsername;
serverSettings.godAuth.bypassPassword = secrets.godAuthBypassPassword;
}
console.log('Launching HTTP(S) server on port ' + port);
var server = new httpserver.create(serverSettings);
// rewrite rules
server.addUrlRewrite( new RegExp("^$") /* empty string */, function(path) { return "/static/index.html" });
server.addUrlRewrite( new RegExp("^/static/.+"), function(path) { return path; });
server.addUrlRewrite( new RegExp("") /* otherwise */, function(path) { return "/public" + path; });
// get routes
server.addGetHandler( new RegExp("^/static/.+", "i"), HttpGet.static);
server.addGetHandler( new RegExp("^.+\\?getOptions", "i"), HttpGet.getOptions);
server.addGetHandler( new RegExp("^.+\\?get", "i"), HttpGet.get);
server.addGetHandler( new RegExp("^.+\\?download", "i"), HttpGet.download);
server.addGetHandler( new RegExp("^.+\\?poll", "i"), HttpGet.poll);
server.addGetHandler( new RegExp("^.+\\?set", "i"), HttpGet.set);
server.addGetHandler( new RegExp("^.+\\?delete", "i"), HttpGet.delete);
server.addDefaultGetHandler( HttpGet.default);
// post routes
server.addPostHandler( new RegExp("^.+\\?setOptions", "i"), HttpPost.setOptions);
server.addPostHandler( new RegExp("^.+\\?set", "i"), HttpPost.set);
server.addPostHandler( new RegExp("^.+\\?update", "i"), HttpPost.update);
server.addDefaultPostHandler( HttpPost.default);
// request logger
server.addGetLogger(logUsername);
server.addPostLogger(logUsername);
// run
server.run();
if ("dropToUser" in config.settings)
dropToUser(config.settings.dropToUser);