Add SSH public key authentication

src/main/java/com/github/sparsick/testcontainers/gitserver/GitServerContainer.java

@@ -1,6 +1,7 @@
 package com.github.sparsick.testcontainers.gitserver;
 
 import com.github.dockerjava.api.command.InspectContainerResponse;
+import org.testcontainers.containers.BindMode;
 import org.testcontainers.containers.GenericContainer;
 import org.testcontainers.containers.wait.strategy.Wait;
 import org.testcontainers.utility.DockerImageName;
@@ -16,6 +17,7 @@ public class GitServerContainer extends GenericContainer<GitServerContainer> {
     private static final String GIT_PASSWORD_KEY = "GIT_PASSWORD";
     private static DockerImageName DEFAULT_DOCKER_IMAGE_NAME = DockerImageName.parse("rockstorm/git-server");
     private String gitRepoName = "testRepo";
+    private SshIdentity sshClientIdentity;
 
     /**
      *
@@ -29,6 +31,7 @@ public GitServerContainer(DockerImageName dockerImageName) {
         } else {
             withExposedPorts(22);
         }
+        withCommand("/usr/sbin/sshd", "-D", "-e");
     }
 
     /**
@@ -57,6 +60,28 @@ public GitServerContainer withGitRepo(String gitRepoName) {
         return this;
     }
 
+    /**
+     * Enabled SSH public key authentication.
+     *
+     * @return instance of the git server container
+     */
+    public GitServerContainer withSshKeyAuth() {
+        try {
+             sshClientIdentity = new SshIdentity(
+                     this.getClass().getClassLoader().getResourceAsStream("id_client").readAllBytes(),
+                     this.getClass().getClassLoader().getResourceAsStream("id_client.pub").readAllBytes(),
+                     new byte[0]);
+
+            withClasspathResourceMapping("id_client.pub", "/home/git/.ssh/authorized_keys", BindMode.READ_ONLY);
+            withClasspathResourceMapping("sshd_config", "/etc/ssh/sshd_config", BindMode.READ_ONLY);
+
+
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        return this;
+    }
+
     /**
      * Return the SSH URI for git repo.
      *
@@ -91,4 +116,15 @@ public String getGitPassword() {
         var password = getEnvMap().get(GIT_PASSWORD_KEY);
         return password != null ? password : "12345";
     }
+
+    /**
+     * Return the identity information for public key authentication.
+     *
+     * If {@code withSshKeyAuth} was not called, then it returns null.
+     *
+     * @return identity information for a public key authentication
+     */
+    public SshIdentity getSshClientIdentity() {
+        return sshClientIdentity;
+    }
 }

src/main/java/com/github/sparsick/testcontainers/gitserver/GitServerVersions.java

@@ -0,0 +1,45 @@
+package com.github.sparsick.testcontainers.gitserver;
+
+import org.testcontainers.utility.DockerImageName;
+
+/**
+ * List of supported Git server version based on the docker image "rockstorm/git-server"
+ *
+ */
+public enum GitServerVersions {
+
+    /**
+     * rockstorm/git-server:2.40
+     */
+    V2_40(DockerImageName.parse("rockstorm/git-server:2.40")),
+    /**
+     * rockstorm/git-server:2.38
+     */
+    V2_38(DockerImageName.parse("rockstorm/git-server:2.38")),
+    /**
+     * rockstorm/git-server:2.36
+     */
+    V2_36(DockerImageName.parse("rockstorm/git-server:2.36")),
+    /**
+     * rockstorm/git-server:2.34.2
+     */
+    V2_34_2(DockerImageName.parse("rockstorm/git-server:2.34.2")),
+    /**
+     * rockstorm/git-server:2.34
+     */
+    V2_34(DockerImageName.parse("rockstorm/git-server:2.34"));
+
+    private final DockerImageName dockerImageName;
+
+    GitServerVersions(DockerImageName dockerImageName) {
+        this.dockerImageName = dockerImageName;
+    }
+
+    /**
+     *
+     * @return docker image name
+     */
+    public DockerImageName getDockerImageName() {
+        return dockerImageName;
+    }
+}

src/main/java/com/github/sparsick/testcontainers/gitserver/SshIdentity.java

@@ -0,0 +1,50 @@
+package com.github.sparsick.testcontainers.gitserver;
+
+/**
+ * Value object for identity information for a public key authentication.
+ */
+public class SshIdentity {
+    private byte[] privateKey;
+    private byte[] publicKey;
+    private byte[] passphrase;
+
+    /**
+     * Identity information for a public key authentication.
+     *
+     * @param privateKey SSH private key
+     * @param publicKey SSH public key
+     * @param passphrase password for private key
+     */
+    public SshIdentity(byte[] privateKey, byte[] publicKey, byte[] passphrase) {
+        this.privateKey = privateKey;
+        this.publicKey = publicKey;
+        this.passphrase = passphrase;
+    }
+
+    /**
+     * SSH private key
+     *
+     * @return SSH private key
+     */
+    public byte[] getPrivateKey() {
+        return privateKey;
+    }
+
+    /**
+     * SSH public key
+     *
+     * @return  SSH public key
+     */
+    public byte[] getPublicKey() {
+        return publicKey;
+    }
+
+    /**
+     * Password for the SSH private key
+     *
+     * @return Password for the SSH private key
+     */
+    public byte[] getPassphrase() {
+        return passphrase;
+    }
+}

src/main/resources/id_client

@@ -0,0 +1,5 @@
+-----BEGIN EC PRIVATE KEY-----
+MHcCAQEEIAv2zdBPnakBt4UCoTDRMLDKOrm0JiPc9CwRFqvcha5coAoGCCqGSM49
+AwEHoUQDQgAEKArvTWElvX1Erm/essBeGKQzsGrHPJjGJprwEOqV/MKjUPZ1jxl3
+iZL9m/PqZrKc94PGgpalIFdxOcdrgwTLMg==
+-----END EC PRIVATE KEY-----

src/main/resources/id_client.pub

@@ -0,0 +1 @@
+ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBCgK701hJb19RK5v3rLAXhikM7BqxzyYxiaa8BDqlfzCo1D2dY8Zd4mS/Zvz6maynPeDxoKWpSBXcTnHa4MEyzI= sparsick@Thinkpad-T14

src/main/resources/sshd_config

@@ -0,0 +1,118 @@
+#	$OpenBSD: sshd_config,v 1.104 2021/07/02 05:11:21 dtucker Exp $
+
+# This is the sshd server system-wide configuration file.  See
+# sshd_config(5) for more information.
+
+# This sshd was compiled with PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+
+# The strategy used for options in the default sshd_config shipped with
+# OpenSSH is to specify options with their default value where
+# possible, but leave them commented.  Uncommented options override the
+# default value.
+
+#Port 22
+#AddressFamily any
+#ListenAddress 0.0.0.0
+#ListenAddress ::
+
+#HostKey /etc/ssh/ssh_host_rsa_key
+#HostKey /etc/ssh/ssh_host_ecdsa_key
+#HostKey /etc/ssh/ssh_host_ed25519_key
+
+# Ciphers and keying
+#RekeyLimit default none
+
+# Logging
+#SyslogFacility AUTH
+#LogLevel DEBUG
+
+# Authentication:
+
+#LoginGraceTime 2m
+#PermitRootLogin prohibit-password
+#StrictModes yes
+#MaxAuthTries 6
+#MaxSessions 10
+
+#PubkeyAuthentication yes
+#PubkeyAcceptedAlgorithms ssh-rsa
+
+# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
+# but this is overridden so installations will only check .ssh/authorized_keys
+AuthorizedKeysFile	.ssh/authorized_keys
+
+#AuthorizedPrincipalsFile none
+
+#AuthorizedKeysCommand none
+#AuthorizedKeysCommandUser nobody
+
+# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
+#HostbasedAuthentication no
+# Change to yes if you don't trust ~/.ssh/known_hosts for
+# HostbasedAuthentication
+#IgnoreUserKnownHosts no
+# Don't read the user's ~/.rhosts and ~/.shosts files
+#IgnoreRhosts yes
+
+# To disable tunneled clear text passwords, change to no here!
+#PasswordAuthentication yes
+#PermitEmptyPasswords no
+
+# Change to no to disable s/key passwords
+#KbdInteractiveAuthentication yes
+
+# Kerberos options
+#KerberosAuthentication no
+#KerberosOrLocalPasswd yes
+#KerberosTicketCleanup yes
+#KerberosGetAFSToken no
+
+# GSSAPI options
+#GSSAPIAuthentication no
+#GSSAPICleanupCredentials yes
+
+# Set this to 'yes' to enable PAM authentication, account processing,
+# and session processing. If this is enabled, PAM authentication will
+# be allowed through the KbdInteractiveAuthentication and
+# PasswordAuthentication.  Depending on your PAM configuration,
+# PAM authentication via KbdInteractiveAuthentication may bypass
+# the setting of "PermitRootLogin without-password".
+# If you just want the PAM account and session checks to run without
+# PAM authentication, then enable this but set PasswordAuthentication
+# and KbdInteractiveAuthentication to 'no'.
+#UsePAM no
+
+#AllowAgentForwarding yes
+# Feel free to re-enable these if your use case requires them.
+AllowTcpForwarding no
+GatewayPorts no
+X11Forwarding no
+#X11DisplayOffset 10
+#X11UseLocalhost yes
+#PermitTTY yes
+#PrintMotd yes
+#PrintLastLog yes
+#TCPKeepAlive yes
+#PermitUserEnvironment no
+#Compression delayed
+#ClientAliveInterval 0
+#ClientAliveCountMax 3
+#UseDNS no
+#PidFile /run/sshd.pid
+#MaxStartups 10:30:100
+#PermitTunnel no
+#ChrootDirectory none
+#VersionAddendum none
+
+# no default banner path
+#Banner none
+
+# override default of no subsystems
+Subsystem	sftp	/usr/lib/ssh/sftp-server
+
+# Example of overriding settings on a per-user basis
+#Match User anoncvs
+#	X11Forwarding no
+#	AllowTcpForwarding no
+#	PermitTTY no
+#	ForceCommand cvs server

src/test/java/com/github/sparsick/testcontainers/gitserver/GitServerContainerJUnit5IntegrationTest.java

@@ -21,7 +21,7 @@
 public class GitServerContainerJUnit5IntegrationTest {
 
     @Container
-    private GitServerContainer containerUnderTest = new GitServerContainer(DockerImageName.parse("rockstorm/git-server:2.38"));
+    private GitServerContainer containerUnderTest = new GitServerContainer(DockerImageName.parse("rockstorm/git-server"));
 
     @TempDir
     private File tempDir;

src/test/java/com/github/sparsick/testcontainers/gitserver/GitServerContainerTest.java

@@ -1,15 +1,17 @@
 package com.github.sparsick.testcontainers.gitserver;
 
+import com.jcraft.jsch.JSch;
+import com.jcraft.jsch.JSchException;
 import com.jcraft.jsch.Session;
 import org.eclipse.jgit.api.Git;
 import org.eclipse.jgit.transport.SshTransport;
 import org.eclipse.jgit.transport.ssh.jsch.JschConfigSessionFactory;
 import org.eclipse.jgit.transport.ssh.jsch.OpenSshConfig;
+import org.eclipse.jgit.util.FS;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.io.TempDir;
 import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.ArgumentsSource;
-import org.testcontainers.shaded.com.github.dockerjava.core.DockerContextMetaFile;
+import org.junit.jupiter.params.provider.EnumSource;
 import org.testcontainers.utility.DockerImageName;
 
 import java.io.File;
@@ -67,9 +69,9 @@ void exposedPortIs22() {
     }
 
     @ParameterizedTest
-    @ArgumentsSource(SupportedGitServerImages.class)
-    void containerStarted(DockerImageName dockerImageName) {
-        var containerUnderTest = new GitServerContainer(dockerImageName);
+    @EnumSource(GitServerVersions.class)
+    void containerStarted(GitServerVersions gitServer) {
+        var containerUnderTest = new GitServerContainer(gitServer.getDockerImageName());
 
         containerUnderTest.start();
 
@@ -88,9 +90,9 @@ void gitRepoURI() {
     }
 
     @ParameterizedTest
-    @ArgumentsSource(SupportedGitServerImages.class)
-    void setupGitRepo(DockerImageName dockerImageName) {
-        var containerUnderTest = new GitServerContainer(dockerImageName).withGitRepo("testRepoName");
+    @EnumSource(GitServerVersions.class)
+    void setupGitRepo(GitServerVersions gitServer) {
+        var containerUnderTest = new GitServerContainer(gitServer.getDockerImageName()).withGitRepo("testRepoName");
 
         containerUnderTest.start();
 
@@ -114,4 +116,42 @@ protected void configure(OpenSshConfig.Host hc, Session session) {
                         .call()
         );
     }
+
+    @ParameterizedTest
+    @EnumSource(GitServerVersions.class)
+    void pubKeyAuth(GitServerVersions gitServer) {
+        var containerUnderTest = new GitServerContainer(gitServer.getDockerImageName()).withSshKeyAuth();
+
+        containerUnderTest.start();
+
+        URI gitRepoURI = containerUnderTest.getGitRepoURIAsSSH();
+
+        assertThatNoException().isThrownBy(() ->
+                Git.cloneRepository()
+                        .setURI(gitRepoURI.toString())
+                        .setDirectory(tempDir)
+                        .setBranch("main")
+                        .setTransportConfigCallback(transport -> {
+                            var sshTransport = (SshTransport) transport;
+                            sshTransport.setSshSessionFactory(new JschConfigSessionFactory() {
+
+                                @Override
+                                protected JSch createDefaultJSch(FS fs ) throws JSchException {
+                                    JSch defaultJSch = super.createDefaultJSch( fs );
+                                    SshIdentity sshIdentity = containerUnderTest.getSshClientIdentity();
+                                    byte[] privateKey = sshIdentity.getPrivateKey();
+                                    byte[] publicKey = sshIdentity.getPublicKey();
+                                    byte[] passphrase = sshIdentity.getPassphrase();
+                                    defaultJSch.addIdentity("git-server", privateKey, publicKey, passphrase);
+                                    return defaultJSch;
+                                }
+                                @Override
+                                protected void configure(OpenSshConfig.Host hc, Session session) {
+                                    session.setConfig("StrictHostKeyChecking", "no");
+                                }
+                            });
+                        })
+                        .call()
+        );
+    }
 }