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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.security.tool;
import com.yahoo.vespa.security.tool.crypto.ConvertBaseTool;
import com.yahoo.vespa.security.tool.crypto.DecryptTool;
import com.yahoo.vespa.security.tool.crypto.EncryptTool;
import com.yahoo.vespa.security.tool.crypto.KeygenTool;
import com.yahoo.vespa.security.tool.crypto.ResealTool;
import com.yahoo.vespa.security.tool.crypto.TokenInfoTool;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.DefaultParser;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import java.io.InputStream;
import java.io.PrintStream;
import java.util.List;
import java.util.Map;
import java.util.Optional;
/**
* Primary application entry point for security utility tools. Handles tool selection,
* CLI argument parsing and exception printing.
*
* Based on previous vespa-security-env tool.
*
* @author vekterli
* @author bjorncs
*/
public class Main {
private final InputStream stdIn;
private final PrintStream stdOut;
private final PrintStream stdError;
private final ConsoleInput consoleInputOrNull;
Main(InputStream stdIn, PrintStream stdOut, PrintStream stdError, ConsoleInput consoleInputOrNull) {
this.stdIn = stdIn;
this.stdOut = stdOut;
this.stdError = stdError;
this.consoleInputOrNull = consoleInputOrNull;
}
private static ConsoleInput consoleOrNullFromJvm() {
var console = System.console();
return console != null ? (prompt, args) -> new String(console.readPassword(prompt, args)).strip() : null;
}
public static void main(String[] args) {
var program = new Main(System.in, System.out, System.err, consoleOrNullFromJvm());
int returnCode = program.execute(args, System.getenv());
System.exit(returnCode);
}
private static final List<Tool> TOOLS = List.of(
new KeygenTool(), new EncryptTool(), new DecryptTool(), new TokenInfoTool(),
new ConvertBaseTool(), new ResealTool());
private static Optional<Tool> toolFromCliArgs(String[] args) {
if (args.length == 0) {
return Optional.empty();
}
String toolName = args[0];
return TOOLS.stream().filter(t -> t.name().equals(toolName)).findFirst();
}
private static String[] withToolNameArgRemoved(String[] args) {
if (args.length == 0) {
throw new IllegalArgumentException("Argument array did not contain a tool name");
}
String[] truncatedArgs = new String[args.length - 1];
System.arraycopy(args, 1, truncatedArgs, 0, truncatedArgs.length);
return truncatedArgs;
}
private static CommandLine parseCliArguments(String[] cliArgs, Options options) throws ParseException {
CommandLineParser parser = new DefaultParser();
return parser.parse(options, cliArgs);
}
public int execute(String[] args, Map<String, String> envVars) {
boolean debugMode = envVars.containsKey("VESPA_DEBUG");
try {
var maybeTool = toolFromCliArgs(args);
if (maybeTool.isEmpty()) { // This also implicitly covers the top-level --help case.
CliOptions.printTopLevelHelp(stdOut, TOOLS);
return 0;
}
var tool = maybeTool.get();
var toolDesc = tool.description();
var cliOpts = CliOptions.withHelpOption(toolDesc.cliOptions());
String[] truncatedArgs = withToolNameArgRemoved(args);
var cmdLine = parseCliArguments(truncatedArgs, cliOpts);
if (cmdLine.hasOption("help")) {
CliOptions.printToolSpecificHelp(stdOut, tool.name(), toolDesc, cliOpts);
return 0;
}
var invocation = new ToolInvocation(cmdLine, envVars, stdIn, stdOut, stdError, consoleInputOrNull, debugMode);
return tool.invoke(invocation);
} catch (ParseException e) {
return handleException("Failed to parse command line arguments: " + e.getMessage(), e, debugMode);
} catch (IllegalArgumentException e) {
return handleException("Invalid command line arguments: " + e.getMessage(), e, debugMode);
} catch (Exception e) {
return handleException("Got unhandled exception: " + e.getMessage(), e, debugMode);
}
}
private int handleException(String message, Exception exception, boolean debugMode) {
stdError.println(message);
if (debugMode) {
exception.printStackTrace(stdError);
}
return 1;
}
}
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