Initial commit
This commit is contained in:
Maxwell Jeffress
219
server/src/main/kotlin/Main.kt
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219
server/src/main/kotlin/Main.kt
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package xyz.maxwellj.chookpen
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import com.sun.net.httpserver.HttpExchange
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import com.sun.net.httpserver.HttpHandler
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import com.sun.net.httpserver.HttpServer
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import java.net.InetSocketAddress
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import java.io.File
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import java.io.BufferedReader
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fun main(args: Array<String>) {
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// Crete a server and start listening for arguments
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val server = HttpServer.create(InetSocketAddress(8000), 0)
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server.createContext("/test", ServerTester())
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server.createContext("/api", ApiHandler())
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server.createContext("/api/createAccount", CreateAccount())
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server.executor = null
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server.start()
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println("Server has started on port 8000")
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}
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class ServerTester : HttpHandler {
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override fun handle(t: HttpExchange) {
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val response = "Testing, testing, 1, 2, 3... Somehow this is going to make it to production one day"
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t.sendResponseHeaders(200, response.length.toLong())
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val os = t.responseBody
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os.write(response.toByteArray())
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println("Test request recieved!")
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os.close()
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}
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}
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class ApiHandler : HttpHandler {
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override fun handle(t: HttpExchange) {
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println("Request recieved...")
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// Get the data
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val path = t.requestURI.path
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val inputData = path.substringAfter("/api/")
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println("API request recieved: $inputData")
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// Parse data sent to the server by client
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var username = ""
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var token = ""
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var message = ""
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var dataType = ""
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var isParsingData = 0
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for (char in inputData) {
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val character = char
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if (character == ':') {
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isParsingData = 1
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} else if (isParsingData == 1) {
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if (character == '}') {
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isParsingData = 0
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dataType = ""
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} else if (character != '{') {
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if (dataType == "username") {
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username += character
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} else if (dataType == "token") {
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token += character
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} else if (dataType == "message") {
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message += character
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}
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}
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} else {
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dataType += character
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}
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}
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val userDatabaseParser = BufferedReader(File("userDatabase").reader())
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var lineNumber = 1
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var userLine = ""
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// Search the user database to find required information about the user
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userDatabaseParser.forEachLine { line ->
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if (line.contains(username)) {
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userLine = line
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}
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lineNumber++
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}
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userDatabaseParser.close()
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if (userLine == "") {
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val response = "That account does not exist on this server."
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t.sendResponseHeaders(403, response.length.toLong())
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val os = t.responseBody
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os.write(response.toByteArray())
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os.close()
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return
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}
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var usernameInDatabase = ""
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var tokenInDatabase = ""
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var currentStage = 0
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for (char in userLine) {
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if (char == ':') {
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currentStage ++
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}
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if (currentStage == 0) {
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usernameInDatabase += char
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} else if (currentStage == 1) {
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tokenInDatabase += char
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}
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}
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tokenInDatabase = tokenInDatabase.replace(":", "")
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if (token != tokenInDatabase) {
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val response = "Invalid token! Please try putting in your password right"
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t.sendResponseHeaders(403, response.length.toLong())
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val os = t.responseBody
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os.write(response.toByteArray())
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os.close()
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return
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}
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// Make the message to respond to the client
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val chatHistoryView = File("chatHistory")
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var fullMessage = ""
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if (message != "") {
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fullMessage = "${chatHistoryView.readText()}$username: $message"
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// Add the client's message to the chat history
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val chatHistory = File("chatHistory")
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chatHistory.appendText("$username: $message ${System.lineSeparator()}")
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message = ""
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} else {
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fullMessage = "${chatHistoryView.readText()}"
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}
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val response = if (inputData.isNotEmpty()) {
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fullMessage
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} else {
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"No data provided"
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}
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// Send the message to the client
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t.sendResponseHeaders(200, response.length.toLong())
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val os = t.responseBody
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os.write(response.toByteArray())
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println("API request handled: $inputData")
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os.close()
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}
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}
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class CreateAccount : HttpHandler {
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override fun handle(t: HttpExchange) {
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val path = t.requestURI.path
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val inputData = path.substringAfter("/api/createAccount/")
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println("Account creation request recieved: $inputData")
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// Parse data sent to the server by client
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var username = ""
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var token = ""
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var message = ""
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var dataType = ""
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var isParsingData = 0
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for (char in inputData) {
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val character = char
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if (character == ':') {
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isParsingData = 1
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} else if (isParsingData == 1) {
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if (character == '}') {
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isParsingData = 0
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dataType = ""
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} else if (character != '{') {
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if (dataType == "username") {
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username += character
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} else if (dataType == "token") {
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token += character
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} else if (dataType == "message") {
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message += character
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}
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}
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} else {
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dataType += character
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}
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}
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val userDatabaseParser = BufferedReader(File("userDatabase").reader())
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var lineNumber = 1
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var userExists = 0
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// Search the user database to find required information about the user
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userDatabaseParser.forEachLine { line ->
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if (line.contains(username)) {
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val response = "That username already exists on the server! Please choose a different username"
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t.sendResponseHeaders(422, response.length.toLong())
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val os = t.responseBody
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os.write(response.toByteArray())
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os.close()
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userExists = 1
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}
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lineNumber++
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}
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userDatabaseParser.close()
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if (userExists == 1) {return}
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println("$username:$token")
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if (username == "") {
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val response = "Please input a username"
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t.sendResponseHeaders(422, response.length.toLong())
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val os = t.responseBody
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os.write(response.toByteArray())
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os.close()
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return
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}
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if (token == "") {
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val response = "Please input a password"
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t.sendResponseHeaders(422, response.length.toLong())
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val os = t.responseBody
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os.write(response.toByteArray())
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os.close()
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return
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}
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val userDatabaseFile = File("userDatabase")
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userDatabaseFile.appendText("${System.lineSeparator()}$username:$token")
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val response = "Creating account was successful!"
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t.sendResponseHeaders(200, response.length.toLong())
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val os = t.responseBody
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os.write(response.toByteArray())
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println("")
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os.close()
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}
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}
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