Add Java Client
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.gitignore
vendored
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.gitignore
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JavaScript/node_modules
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JavaScript/node_modules
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Java/target
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Python/venv
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Python/venv
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Python/dist
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Python/dist
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Python/buildc
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Python/buildc
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45
Java/pom.xml
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Java/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<scm>
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<connection>scm:git:https://github.com/LonaDB/Clients.git</connection>
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<developerConnection>scm:git:https://github.com/LonaDB/Clients.git</developerConnection>
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<url>https://github.com/LonaDB/Clients</url>
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</scm>
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<groupId>org.lona-development.java-client</groupId>
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<artifactId>LonaDB</artifactId>
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<version>2.1.3</version>
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<dependencies>
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<dependency>
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<groupId>com.fasterxml.jackson.core</groupId>
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<artifactId>jackson-databind</artifactId>
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<version>2.13.0</version>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.13.1</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.8.1</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>
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166
Java/src/main/java/org/lona_development/java_client/LonaDB.java
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Java/src/main/java/org/lona_development/java_client/LonaDB.java
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import java.io.*;
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import java.net.*;
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import java.util.Base64;
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import java.util.Random;
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import javax.crypto.*;
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import javax.crypto.spec.*;
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import java.security.*;
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public class LonaDB {
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private String host;
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private int port;
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private String name;
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private String password;
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public LonaDB(String host, int port, String name, String password) {
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this.host = host;
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this.port = port;
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this.name = name;
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this.password = password;
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}
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private String makeId(int length) {
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StringBuilder result = new StringBuilder();
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String characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890abcdefghijklmnopqrstuvwxyz";
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Random rand = new Random();
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int counter = 0;
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while (counter < length) {
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result.append(characters.charAt(rand.nextInt(characters.length())));
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counter++;
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}
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return result.toString();
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}
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private String encryptPassword(String password, String key) throws Exception {
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byte[] iv = new byte[16];
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new SecureRandom().nextBytes(iv);
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(Base64.getDecoder().decode(key), "AES"), new IvParameterSpec(iv));
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byte[] encrypted = cipher.doFinal(password.getBytes());
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return bytesToHex(iv) + ":" + bytesToHex(encrypted);
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}
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private String bytesToHex(byte[] bytes) {
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StringBuilder result = new StringBuilder();
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for (byte b : bytes) {
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result.append(String.format("%02x", b));
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}
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return result.toString();
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}
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public String sendRequest(String action, String data) throws Exception {
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String processID = makeId(5);
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String encryptionKey = Base64.getEncoder().encodeToString(MessageDigest.getInstance("SHA-256").digest(processID.getBytes()));
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String encryptedPassword = encryptPassword(password, encryptionKey);
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String request = String.format("{\"action\":\"%s\",\"login\":{\"name\":\"%s\",\"password\":\"%s\"},\"process\":\"%s\",%s}", action, name, encryptedPassword, processID, data);
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Socket socket = new Socket(host, port);
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OutputStream out = socket.getOutputStream();
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PrintWriter writer = new PrintWriter(out, true);
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writer.println(request);
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BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
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StringBuilder response = new StringBuilder();
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String line;
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while ((line = in.readLine()) != null) {
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response.append(line);
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}
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socket.close();
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return response.toString();
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}
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public String createFunction(String name, String content) throws Exception {
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String data = String.format("{\"function\":{\"name\":\"%s\",\"content\":\"%s\"}}", name, content);
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return sendRequest("add_function", data);
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}
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public String executeFunction(String name) throws Exception {
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String data = String.format("{\"name\":\"%s\"}", name);
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return sendRequest("execute_function", data);
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}
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public String getTables(String user) throws Exception {
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String data = String.format("{\"user\":\"%s\"}", user);
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return sendRequest("get_tables", data);
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}
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public String getTableData(String table) throws Exception {
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String data = String.format("{\"table\":\"%s\"}", table);
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return sendRequest("get_table_data", data);
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}
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public String deleteTable(String table) throws Exception {
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String data = String.format("{\"table\":{\"name\":\"%s\"}}", table);
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return sendRequest("delete_table", data);
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}
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public String createTable(String table) throws Exception {
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String data = String.format("{\"table\":{\"name\":\"%s\"}}", table);
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return sendRequest("create_table", data);
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}
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public String set(String table, String name, String value) throws Exception {
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String data = String.format("{\"table\":{\"name\":\"%s\"},\"variable\":{\"name\":\"%s\",\"value\":\"%s\"}}", table, name, value);
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return sendRequest("set_variable", data);
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}
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public String delete(String table, String name) throws Exception {
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String data = String.format("{\"table\":{\"name\":\"%s\"},\"variable\":{\"name\":\"%s\"}}", table, name);
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return sendRequest("remove_variable", data);
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}
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public String get(String table, String name) throws Exception {
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String data = String.format("{\"table\":{\"name\":\"%s\"},\"variable\":{\"name\":\"%s\"}}", table, name);
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return sendRequest("get_variable", data);
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}
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public String getUsers() throws Exception {
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return sendRequest("get_users", "{}");
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}
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public String createUser(String name, String pass) throws Exception {
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String data = String.format("{\"user\":{\"name\":\"%s\",\"password\":\"%s\"}}", name, pass);
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return sendRequest("create_user", data);
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}
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public String deleteUser(String name) throws Exception {
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String data = String.format("{\"user\":{\"name\":\"%s\"}}", name);
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return sendRequest("delete_user", data);
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}
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public String checkPassword(String name, String pass) throws Exception {
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String data = String.format("{\"checkPass\":{\"name\":\"%s\",\"pass\":\"%s\"}}", name, pass);
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return sendRequest("check_password", data);
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}
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public String checkPermission(String name, String permission) throws Exception {
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String data = String.format("{\"permission\":{\"user\":\"%s\",\"name\":\"%s\"}}", name, permission);
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return sendRequest("check_permission", data);
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}
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public String removePermission(String name, String permission) throws Exception {
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String data = String.format("{\"permission\":{\"user\":\"%s\",\"name\":\"%s\"}}", name, permission);
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return sendRequest("remove_permission", data);
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}
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public String getPermissionsRaw(String name) throws Exception {
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String data = String.format("{\"user\":\"%s\"}", name);
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return sendRequest("get_permissions_raw", data);
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}
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public String addPermission(String name, String permission) throws Exception {
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String data = String.format("{\"permission\":{\"user\":\"%s\",\"name\":\"%s\"}}", name, permission);
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return sendRequest("add_permission", data);
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}
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public String eval(String func) throws Exception {
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String data = String.format("{\"function\":\"%s\"}", func);
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return sendRequest("eval", data);
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}
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}
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