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server.js
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server.js
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var webshot = require('./lib/webshot/lib/webshot.js'),
argv = require('optimist').argv,
express = require('express'),
http = require('http'),
zip = require("node-native-zip"),
gm = require('gm'),
fs = require('fs'),
app = express(),
server = http.createServer(app),
io = require('socket.io').listen(server),
port = argv.port || 8989,
targetUrl = argv.appurl || "http://localhost/visualize",
socketUrl = argv.socketurl + ':' + port || "http://localhost:" + port,
staticDir = "shots/",
phantomPath = argv.phantomjs || "/usr/bin/phantomjs";
constraints = {
'letter': {
width: 612,
height: 792
},
'ledger': {
width: 1224,
height: 792
},
'A4': {
width: 595,
height: 842
},
'A3': {
width: 842,
height: 1191
}
}
// fix urls without trailing slash
if (targetUrl.slice(-1) !== '/') {
targetUrl = targetUrl + '/';
}
// sockets and static file server all listen on port 8989
app.use(express.static(__dirname + '/shots'));
server.listen(port);
app.get('/download/:file', function (req, res) {
var file = req.params.file;
fs.readFile(staticDir + req.params.file, function(err, data) {
if(err) {
res.send("Oops! Couldn't find that file.");
} else {
// set the content type based on the file
res.contentType(req.params.file);
res.setHeader('Content-disposition', 'attachment; filename=' + file);
res.send(data);
}
res.end();
});
});
io.sockets.on('connection', function(socket) {
//clients[socket.id] = socket;
socket.on('shot', function(data, cb) {
var now = new Date();
var ts = now.getFullYear() + '' + ('0' + now.getDate()).slice(-2) + '' +
("0" + Number(now.getMonth()+1)).slice(-2) +
("0" + now.getHours()).slice(-2) +
("0" + now.getSeconds()).slice(-2),
// RDH 07/19/2018 - This format is stupid, but I don't want to dig in to be
// sure that rewriting it won't break anything. See initial format code
// below. Removed due to insecurities in Moment.
// Wishlist: swap day with month, add minutes between hours and seconds
// var ts = moment().format('YYYYDDmmHHss'),
filename = ts + '-' + socket.id;
options = {
userAgent: data.userAgent,
session: data.session,
screenSize: {
width: data.screenWidth,
height: data.screenHeight
},
shotSize: {
width: data.mapWidth,
height: data.mapHeight
},
phantomPath: phantomPath
},
hash = data.hash + "&print=true";
if (data.title) {
hash = hash + "&title=" + data.title;
}
if (data.borderless === true) {
hash = hash + "&borderless=true";
}
console.dir(data);
console.log(targetUrl + hash);
webshot(targetUrl + hash, staticDir + filename + '.png', options, function(err) {
var original = staticDir + filename + '.png',
target = staticDir + filename,
img = gm(original),
done = function (format) {
var format = format || data.format
path = socketUrl + '/' + filename + format,
thumb = socketUrl + '/thumb-' + filename + '.png';
cb({
thumb: thumb,
path: path,
download: socketUrl + '/download/' + filename + format
});
},
zipTiff = function (cb) {
var archive = new zip(),
worldString = data.pixelSize + "\n0\n0\n" +
data.pixelSize * -1 + '\n' + data.extent[0] + '\n'
data.extent[3] + '\n',
prjFileString = 'GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]]';
archive.add(filename + '.tfw', new Buffer(worldString, "utf8"));
archive.add(filename + '.prj', new Buffer(prjFileString, "utf8"));
console.dir(worldString);
archive.addFiles([{ name: filename + data.format, path: target + data.format }],
function (err) {
console.dir(err);
fs.writeFile(staticDir + filename+ '.zip', archive.toBuffer(), function () {
cb('.zip')
});
});
};
if (! err) {
img.quality(100);
if (data.format === '.pdf') {
img.resize(constraints[data.paperSize].width);
img.extent(constraints[data.paperSize].width, constraints[data.paperSize].width);
} else {
img.resize(parseInt(data.shotWidth, 10), parseInt(data.shotHeight, 10));
}
img.write(target + data.format, function () {
gm(original).resize(350, 350)
.write(staticDir +'thumb-' + filename + '.png', function (err) {
if (err) {
console.log(err);
}
if (data.format === '.tiff') {
zipTiff(done);
} else {
done();
}
});
});
}
});
});
});