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Merged
bsayli merged 1 commit into from
Sep 14, 2025
Merged

test(license-generator): add missing unit & integration tests for CLI… #10

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8 changes: 8 additions & 0 deletions license-generator/pom.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@
<junit.jupiter.version>5.13.4</junit.jupiter.version>
<maven-surefire-plugin.version>3.5.3</maven-surefire-plugin.version>
<jacoco-maven-plugin.version>0.8.13</jacoco-maven-plugin.version>
<system-lambda.version>1.2.1</system-lambda.version>
</properties>

<dependencies>
Expand Down Expand Up @@ -83,6 +84,13 @@
<scope>test</scope>
</dependency>

<dependency>
<groupId>com.github.stefanbirkner</groupId>
<artifactId>system-lambda</artifactId>
<version>${system-lambda.version}</version>
<scope>test</scope>
</dependency>

</dependencies>

<build>
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114 changes: 48 additions & 66 deletions license-generator/src/main/java/io/github/bsayli/license/cli/Ed25519KeygenCli.java
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@@ -1,108 +1,90 @@
package io.github.bsayli.license.cli;

import java.io.IOException;
import java.nio.file.Files;
import io.github.bsayli.license.cli.service.Ed25519KeyService;
import java.nio.file.Path;
import java.security.*;
import java.security.spec.ECGenParameterSpec;
import java.util.Base64;
import java.util.Optional;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public final class Ed25519KeygenCli {

static final int EXIT_OK = 0;
static final int EXIT_USAGE = 2;
static final int EXIT_ERROR = 3;
private static final Logger log = LoggerFactory.getLogger(Ed25519KeygenCli.class);

private static final String ED25519_STD_ALGO = "Ed25519";
private static final String EDDSA_BC_ALGO = "EdDSA";
private static final String ED25519_CURVE = "Ed25519";
private static final String BC_PROVIDER = "BC";
private static final String ARG_OUT_PRIVATE = "--outPrivate";
private static final String ARG_OUT_PUBLIC = "--outPublic";
private static final String ARG_HELP_LONG = "--help";
private static final String ARG_HELP_SHORT = "-h";

private Ed25519KeygenCli() {}

public static void main(String[] args) {
String outPriv = readOpt(args, "--outPrivate").orElse(null);
String outPub = readOpt(args, "--outPublic").orElse(null);
System.exit(run(args));
}

static int run(String[] args) {
try {
ensureBouncyCastleIfNeeded();
if (hasFlag(args, ARG_HELP_LONG) || hasFlag(args, ARG_HELP_SHORT)) {
printUsage();
return EXIT_OK;
}

KeyPair kp = generateEd25519KeyPair();
String outPriv = readOpt(args, ARG_OUT_PRIVATE).orElse(null);
String outPub = readOpt(args, ARG_OUT_PUBLIC).orElse(null);

String privatePkcs8B64 = Base64.getEncoder().encodeToString(kp.getPrivate().getEncoded());
String publicSpkiB64 = Base64.getEncoder().encodeToString(kp.getPublic().getEncoded());
var service = new Ed25519KeyService();
var keys = service.generate();

if (outPriv != null) {
writeString(Path.of(outPriv), privatePkcs8B64);
}
if (outPub != null) {
writeString(Path.of(outPub), publicSpkiB64);
}
if (outPub != null) service.writeString(Path.of(outPub), keys.publicSpkiB64());
if (outPriv != null) service.writeString(Path.of(outPriv), keys.privatePkcs8B64());

log.info("=== Ed25519 Key Pair (Base64) ===");
log.info("Public (SPKI, X.509): {}", publicSpkiB64);
log.info("Private (PKCS#8) : {}", privatePkcs8B64);
log.info("Public (SPKI, X.509): {}", keys.publicSpkiB64());
log.info("Private (PKCS#8) : {}", keys.privatePkcs8B64());

if (outPriv != null || outPub != null) {
log.info("Written:");
if (outPub != null) log.info(" {} (public, SPKI)", outPub);
if (outPriv != null) log.info(" {} (private, PKCS#8)", outPriv);
}

log.info("");
log.info("Use with SignatureCli (sign): --privateKey <PKCS8-Base64>");
log.info(
"Use with SignatureValidator (verify): pass SPKI public key Base64 to its constructor.");

System.exit(0);
return EXIT_OK;
} catch (IllegalArgumentException e) {
log.error(e.getMessage());
printUsage();
return EXIT_USAGE;
} catch (Exception e) {
log.error("Key generation error: {}", e.getMessage(), e);
System.exit(2);
log.error("Key generation error", e);
return EXIT_ERROR;
}
}

private static KeyPair generateEd25519KeyPair() throws GeneralSecurityException {
try {
KeyPairGenerator kpg = KeyPairGenerator.getInstance(ED25519_STD_ALGO);
return kpg.generateKeyPair();
} catch (NoSuchAlgorithmException e) {
KeyPairGenerator kpg = KeyPairGenerator.getInstance(EDDSA_BC_ALGO, BC_PROVIDER);
kpg.initialize(new ECGenParameterSpec(ED25519_CURVE), new SecureRandom());
return kpg.generateKeyPair();
}
}

private static void ensureBouncyCastleIfNeeded() {
if (Security.getProvider(BC_PROVIDER) == null) {
try {
Class<?> bc = Class.forName("org.bouncycastle.jce.provider.BouncyCastleProvider");
Provider p = (Provider) bc.getDeclaredConstructor().newInstance();
Security.addProvider(p);
log.debug("BouncyCastle provider added.");
} catch (Exception ignored) {
log.debug("BouncyCastle not on classpath; will use JDK provider if available.");
}
}
}

private static Optional<String> readOpt(String[] argv, String name) {
static Optional<String> readOpt(String[] argv, String name) {
for (int i = 0; i < argv.length; i++) {
if (name.equals(argv[i]) && i + 1 < argv.length) {
String v = argv[i + 1];
if (v != null && !v.startsWith("--") && !v.startsWith("-")) {
return Optional.of(v);
}
if (v != null && !v.startsWith("--") && !v.startsWith("-")) return Optional.of(v);
}
}
return Optional.empty();
}

private static void writeString(Path path, String content) throws IOException {
Path parent = path.toAbsolutePath().getParent();
if (parent != null) {
Files.createDirectories(parent);
}
Files.writeString(path, content);
private static boolean hasFlag(String[] argv, String flag) {
for (String s : argv) if (flag.equals(s)) return true;
return false;
}

private static void printUsage() {
log.info(
"""
Usage:
java -cp license-generator.jar io.github.bsayli.license.cli.Ed25519KeygenCli [--outPublic <path>] [--outPrivate <path>] [--help]

Options:
--outPublic <path> Write Base64 SPKI public key to file
--outPrivate <path> Write Base64 PKCS#8 private key to file
--help, -h Show this help
""");
}
}
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