add ssh and token authentication

build.gradle

@@ -219,7 +219,22 @@ dependencies {
     implementation "org.springframework.security:spring-security-messaging:${springSecurityVersion}"
     implementation "commons-io:commons-io:2.16.1"
     implementation "com.thedeanda:lorem:2.2"
-    implementation "org.eclipse.jgit:org.eclipse.jgit:6.9.0.202403050737-r"
+    implementation "org.eclipse.jgit:org.eclipse.jgit:7.1.0.202411261347-r"
+    // https://search.maven.org/artifact/org.eclipse.jgit/org.eclipse.jgit
+    implementation "org.eclipse.jgit:org.eclipse.jgit.ssh.apache:7.1.0.202411261347-r"
+    // Note: jgit.htt.server is not compatible with jakarta yet and neither is there a timeline. Hence, we had to add the source files to our repository.
+    // Once the compatibility is given, we can switch back to the maven dependency.
+    implementation "org.eclipse.jgit:org.eclipse.jgit.http.server:7.1.0.202411261347-r"
+
+    // apache ssh enabled the ssh git operations in LocalVC together with JGit
+    implementation "org.apache.sshd:sshd-core:2.14.0"
+    implementation "org.apache.sshd:sshd-git:2.14.0"
+    implementation "org.apache.sshd:sshd-osgi:2.14.0"
+    implementation "org.apache.sshd:sshd-sftp:2.14.0"
+
+    implementation "org.bouncycastle:bcpkix-jdk18on:1.79"
+    implementation "org.bouncycastle:bcprov-jdk18on:1.79"
+
     implementation "io.reactivex.rxjava3:rxjava:3.1.8"
     implementation 'io.netty:netty-resolver-dns-native-macos:4.1.100.Final:osx-aarch_64'
     implementation 'com.opencsv:opencsv:5.9'

src/main/java/de/tum/cit/ase/artemisModel/ArtemisAuthMechanism.java

@@ -0,0 +1,9 @@
+package de.tum.cit.ase.artemisModel;
+
+public enum ArtemisAuthMechanism {
+    ONLINE_IDE,
+    PASSWORD,
+    PARTICIPATION_TOKEN,
+    SSH,
+    USER_TOKEN,
+}

src/main/java/de/tum/cit/ase/domain/ArtemisUser.java

@@ -4,7 +4,21 @@
 import com.opencsv.bean.CsvBindByName;
 import de.tum.cit.ase.util.ArtemisServer;
 import jakarta.persistence.*;
+import java.io.ByteArrayOutputStream;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.StringWriter;
+import java.math.BigInteger;
+import java.nio.ByteBuffer;
+import java.security.*;
+import java.security.interfaces.RSAPublicKey;
 import java.time.ZonedDateTime;
+import java.util.Arrays;
+import java.util.Base64;
+import org.bouncycastle.openssl.jcajce.JcaPEMWriter;
+import org.bouncycastle.util.io.pem.PemObject;
+import org.bouncycastle.util.io.pem.PemWriter;
+import org.springframework.data.util.Pair;
 
 @Entity
 @Table(name = "artemis_user")
@@ -35,6 +49,14 @@ public class ArtemisUser {
     @JsonIgnore
     private ZonedDateTime tokenExpirationDate;
 
+    @Column(name = "public_ssh_key")
+    @JsonIgnore
+    private String publicKey;
+
+    @Column(name = "private_ssh_key")
+    @JsonIgnore
+    private String privateKey;
+
     public Long getId() {
         return id;
     }
@@ -90,4 +112,25 @@ public ZonedDateTime getTokenExpirationDate() {
     public void setTokenExpirationDate(ZonedDateTime tokenExpirationDate) {
         this.tokenExpirationDate = tokenExpirationDate;
     }
+
+    public String getPrivateKey() {
+        return privateKey;
+    }
+
+    public void setPrivateKey(String privateKey) {
+        this.privateKey = privateKey;
+    }
+
+    public String getPublicKey() {
+        return publicKey;
+    }
+
+    public void setPublicKey(String publicKey) {
+        this.publicKey = publicKey;
+    }
+
+    public void setKeyPair(Pair<String, String> keyPair) {
+        this.publicKey = keyPair.getFirst();
+        this.privateKey = keyPair.getSecond();
+    }
 }

src/main/java/de/tum/cit/ase/domain/RequestType.java

@@ -13,4 +13,12 @@ public enum RequestType {
     REPOSITORY_INFO,
     REPOSITORY_FILES,
     MISC,
+    SETUP_SSH_KEYS,
+    FETCH_PARTICIPATION_VCS_ACCESS_TOKEN,
+    CLONE_SSH,
+    CLONE_TOKEN,
+    CLONE_PASSWORD,
+    PUSH_SSH,
+    PUSH_TOKEN,
+    PUSH_PASSWORD,
 }

src/main/java/de/tum/cit/ase/domain/Simulation.java

@@ -45,10 +45,24 @@ public class Simulation {
     @Column(name = "user_range")
     private String userRange;
 
+    @Deprecated
+    @JsonIgnore
     @Enumerated(EnumType.STRING)
     @Column(name = "ide_type", nullable = false)
     private IDEType ideType;
 
+    @Column(name = "onlineide_percentage", nullable = false)
+    private double onlineIdePercentage;
+
+    @Column(name = "password_percentage", nullable = false)
+    private double passwordPercentage;
+
+    @Column(name = "token_percentage", nullable = false)
+    private double tokenPercentage;
+
+    @Column(name = "ssh_percentage", nullable = false)
+    private double sshPercentage;
+
     @Column(name = "number_of_commits_and_pushes_from")
     private int numberOfCommitsAndPushesFrom;
 
@@ -212,6 +226,42 @@ public boolean instructorCredentialsProvided() {
         return instructorUsername != null && instructorPassword != null;
     }
 
+    public double getOnlineIdePercentage() {
+        return onlineIdePercentage;
+    }
+
+    public void setOnlineIdePercentage(double onlineIdePercentage) {
+        this.onlineIdePercentage = onlineIdePercentage;
+    }
+
+    public double getPasswordPercentage() {
+        return passwordPercentage;
+    }
+
+    public void setPasswordPercentage(double passwordPercentage) {
+        this.passwordPercentage = passwordPercentage;
+    }
+
+    public double getTokenPercentage() {
+        return tokenPercentage;
+    }
+
+    public void setTokenPercentage(double tokenPercentage) {
+        this.tokenPercentage = tokenPercentage;
+    }
+
+    public double getSshPercentage() {
+        return sshPercentage;
+    }
+
+    public void setSshPercentage(double sshPercentage) {
+        this.sshPercentage = sshPercentage;
+    }
+
+    public boolean participationPercentagesSumUpToHundredPercent() {
+        return (this.onlineIdePercentage + this.passwordPercentage + this.tokenPercentage + this.sshPercentage) == 100.0;
+    }
+
     public enum Mode {
         /**
          * We create a temporary course and exam, prepare the exam and delete everything afterwards.

src/main/java/de/tum/cit/ase/service/CiStatusService.java

@@ -134,18 +134,22 @@ public CompletableFuture<Void> subscribeToCiStatusViaResults(SimulationRun simul
                 } catch (InterruptedException e) {
                     Thread.currentThread().interrupt();
                 }
-                log.debug("Updating CI status for simulation run {}", simulationRun.getId());
+                log.info("Updating CI status for simulation run {}", simulationRun.getId());
+
                 submissions = new ArrayList<>();
                 for (var participation : participations) {
                     submissions.addAll(admin.getSubmissions(participation.getId()));
                 }
                 numberOfQueuedJobs = submissions.size() - getNumberOfResults(submissions);
+                log.info("Currently queued buildjobs: {}", numberOfQueuedJobs);
+
                 status.setQueuedJobs(numberOfQueuedJobs);
                 status.setTimeInMinutes(status.getTimeInMinutes() + 1);
                 status.setAvgJobsPerMinute((double) (status.getTotalJobs() - status.getQueuedJobs()) / status.getTimeInMinutes());
                 status = ciStatusRepository.save(status);
                 websocketService.sendRunCiUpdate(simulationRun.getId(), status);
             } while (numberOfQueuedJobs > 0);
+
             status.setFinished(true);
             status = ciStatusRepository.save(status);
             websocketService.sendRunCiUpdate(simulationRun.getId(), status);

src/main/java/de/tum/cit/ase/service/artemis/ArtemisUserService.java

@@ -10,11 +10,15 @@
 import de.tum.cit.ase.service.dto.ArtemisUserPatternDTO;
 import de.tum.cit.ase.util.ArtemisServer;
 import de.tum.cit.ase.util.NumberRangeParser;
+import de.tum.cit.ase.util.SshUtils;
 import de.tum.cit.ase.web.rest.errors.BadRequestAlertException;
 import java.io.*;
 import java.util.*;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.IntStream;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.data.util.Pair;
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -61,14 +65,28 @@ public List<ArtemisUser> createArtemisUsersByPattern(ArtemisServer server, Artem
             if (admin == null) {
                 throw new BadRequestAlertException("No admin user found for server", "artemisUser", "missingAdmin");
             }
-            simulatedArtemisAdmin =
-                SimulatedArtemisUser.createArtemisAdminFromCredentials(
-                    artemisConfiguration.getUrl(server),
-                    admin.getUsername(),
-                    admin.getPassword()
-                );
+            simulatedArtemisAdmin = SimulatedArtemisUser.createArtemisAdminFromCredentials(
+                artemisConfiguration.getUrl(server),
+                admin.getUsername(),
+                admin.getPassword()
+            );
             simulatedArtemisAdmin.login();
         }
+        log.info("Generate SSH keys... this might take some time");
+        AtomicInteger sshKeyCounter = new AtomicInteger(0);
+        int totalKeys = pattern.getTo() - pattern.getFrom();
+        Pair<String, String>[] pregeneratedSSHkeys = new Pair[totalKeys + 1];
+
+        IntStream.range(pattern.getFrom(), pattern.getTo() + 1)
+            .parallel()
+            .forEach(i -> {
+                if (sshKeyCounter.get() % 100 == 0) {
+                    log.info("{{}} of {{}} keys created...", sshKeyCounter.get(), totalKeys);
+                }
+                pregeneratedSSHkeys[i - pattern.getFrom()] = SshUtils.generateSshKeyPair();
+                sshKeyCounter.getAndIncrement();
+            });
+        log.info("Done generating {{}} SSH keys", totalKeys);
 
         List<ArtemisUser> createdUsers = new ArrayList<>();
         for (int i = pattern.getFrom(); i < pattern.getTo(); i++) {
@@ -79,6 +97,8 @@ public List<ArtemisUser> createArtemisUsersByPattern(ArtemisServer server, Artem
             var password = pattern.getPasswordPattern().replace("{i}", String.valueOf(i));
             artemisUser.setUsername(username);
             artemisUser.setPassword(password);
+            artemisUser.setKeyPair(pregeneratedSSHkeys[i - pattern.getFrom()]);
+
             try {
                 ArtemisUser createdUser = saveArtemisUser(artemisUser);
                 // Create user on Artemis if necessary
@@ -112,6 +132,7 @@ public ArtemisUser createArtemisUser(ArtemisServer server, ArtemisUserForCreatio
         artemisUser.setServer(server);
         artemisUser.setUsername(artemisUserDTO.getUsername());
         artemisUser.setPassword(artemisUserDTO.getPassword());
+        artemisUser.setKeyPair(SshUtils.generateSshKeyPair());
 
         if (artemisUserDTO.getServerWideId() != null) {
             artemisUser.setServerWideId(artemisUserDTO.getServerWideId());

src/main/java/de/tum/cit/ase/service/artemis/interaction/SimulatedArtemisAdmin.java

@@ -178,6 +178,19 @@ public Course createCourse() {
             .block();
     }
 
+    public void cancelAllQueuedBuildJobs() {
+        if (!authenticated) {
+            throw new IllegalStateException("User " + username + " is not logged in or does not have the necessary access rights.");
+        }
+
+        webClient
+            .delete()
+            .uri(uriBuilder -> uriBuilder.pathSegment("api", "admin", "cancel-all-queued-jobs").build())
+            .retrieve()
+            .toBodilessEntity()
+            .block();
+    }
+
     /**
      * Create an exam for benchmarking.
      * @param course the course for which to create the exam