Zoom integration
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anhefti
parent
3dddaf9051
commit
b0dd0e1afc
2 changed files with 221 additions and 6 deletions
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@ -58,8 +58,8 @@ import ch.ethz.seb.sebserver.webservice.servicelayer.session.SEBClientInstructio
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@WebServiceProfile
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public class ExamJITSIProctoringService implements ExamProctoringService {
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private static final String TOKEN_ENCODE_ALG = "HmacSHA256";
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private static final String SEB_SERVER_KEY = "seb-server";
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private static final String SEB_CLIENT_KEY = "seb-client";
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private static final Logger log = LoggerFactory.getLogger(ExamJITSIProctoringService.class);
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@ -384,9 +384,9 @@ public class ExamJITSIProctoringService implements ExamProctoringService {
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.encodeToString(jwtPayload.getBytes(StandardCharsets.UTF_8));
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final String message = jwtHeaderPart + "." + jwtPayloadPart;
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final Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
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final Mac sha256_HMAC = Mac.getInstance(TOKEN_ENCODE_ALG);
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final SecretKeySpec secret_key =
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new SecretKeySpec(Utils.toByteArray(appSecret), "HmacSHA256");
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new SecretKeySpec(Utils.toByteArray(appSecret), TOKEN_ENCODE_ALG);
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sha256_HMAC.init(secret_key);
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final String hash = urlEncoder.encodeToString(sha256_HMAC.doFinal(Utils.toByteArray(message)));
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@ -8,32 +8,119 @@
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package ch.ethz.seb.sebserver.webservice.servicelayer.session.impl;
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import java.nio.charset.StandardCharsets;
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import java.security.InvalidKeyException;
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import java.security.NoSuchAlgorithmException;
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import java.util.Base64;
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import java.util.Base64.Encoder;
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import java.util.Collection;
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import java.util.Map;
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import javax.crypto.Mac;
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import javax.crypto.spec.SecretKeySpec;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.context.annotation.Lazy;
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import org.springframework.http.HttpEntity;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpMethod;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.MediaType;
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import org.springframework.http.ResponseEntity;
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import org.springframework.stereotype.Service;
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import org.springframework.web.client.RestTemplate;
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import ch.ethz.seb.sebserver.ClientHttpRequestFactoryService;
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import ch.ethz.seb.sebserver.gbl.Constants;
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import ch.ethz.seb.sebserver.gbl.api.APIMessage;
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import ch.ethz.seb.sebserver.gbl.api.APIMessage.APIMessageException;
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import ch.ethz.seb.sebserver.gbl.api.APIMessage.FieldValidationException;
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import ch.ethz.seb.sebserver.gbl.api.JSONMapper;
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import ch.ethz.seb.sebserver.gbl.async.AsyncService;
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import ch.ethz.seb.sebserver.gbl.async.CircuitBreaker;
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import ch.ethz.seb.sebserver.gbl.model.exam.Exam;
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import ch.ethz.seb.sebserver.gbl.model.exam.ProctoringRoomConnection;
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import ch.ethz.seb.sebserver.gbl.model.exam.ProctoringServiceSettings;
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import ch.ethz.seb.sebserver.gbl.model.exam.ProctoringServiceSettings.ProctoringServerType;
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import ch.ethz.seb.sebserver.gbl.profile.WebServiceProfile;
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import ch.ethz.seb.sebserver.gbl.util.Cryptor;
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import ch.ethz.seb.sebserver.gbl.util.Result;
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import ch.ethz.seb.sebserver.gbl.util.Utils;
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import ch.ethz.seb.sebserver.webservice.servicelayer.session.ExamProctoringService;
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import ch.ethz.seb.sebserver.webservice.servicelayer.session.ExamSessionService;
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@Lazy
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@Service
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@WebServiceProfile
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public class ExamZOOMProctoringService implements ExamProctoringService {
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private static final Logger log = LoggerFactory.getLogger(ExamZOOMProctoringService.class);
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private static final String API_TEST_ENDPOINT = "v2/users?status=active&page_size=30&page_number=1&data_type=Json";
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private static final String TOKEN_ENCODE_ALG = "HmacSHA256";
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private static final String ZOOM_ACCESS_TOKEN_HEADER =
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"{\"alg\":\"HS256\",\"typ\":\"JWT\"}";
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private static final String ZOOM_ACCESS_TOKEN_PAYLOAD =
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"{\"iss\":\"%s\",\"exp\":%s}";
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private final ExamSessionService examSessionService;
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private final ClientHttpRequestFactoryService clientHttpRequestFactoryService;
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private final Cryptor cryptor;
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private final AsyncService asyncService;
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private final JSONMapper jsonMapper;
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public ExamZOOMProctoringService(
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final ExamSessionService examSessionService,
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final ClientHttpRequestFactoryService clientHttpRequestFactoryService,
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final Cryptor cryptor,
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final AsyncService asyncService,
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final JSONMapper jsonMapper) {
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this.examSessionService = examSessionService;
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this.clientHttpRequestFactoryService = clientHttpRequestFactoryService;
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this.cryptor = cryptor;
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this.asyncService = asyncService;
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this.jsonMapper = jsonMapper;
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}
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@Override
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public ProctoringServerType getType() {
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return ProctoringServerType.ZOOM;
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}
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@Override
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public Result<Boolean> testExamProctoring(final ProctoringServiceSettings examProctoring) {
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// TODO Auto-generated method stub
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return null;
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public Result<Boolean> testExamProctoring(final ProctoringServiceSettings proctoringSettings) {
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return Result.tryCatch(() -> {
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if (proctoringSettings.serverURL != null && proctoringSettings.serverURL.contains("?")) {
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throw new FieldValidationException(
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"serverURL",
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"proctoringSettings:serverURL:invalidURL");
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}
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try {
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final String url = proctoringSettings.serverURL.endsWith(Constants.SLASH.toString())
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? proctoringSettings.serverURL + API_TEST_ENDPOINT
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: proctoringSettings.serverURL + "/" + API_TEST_ENDPOINT;
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final ResponseEntity<String> result = new ZoomRestCallTemplate(proctoringSettings)
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.callGET(url);
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if (result.getStatusCode() != HttpStatus.OK) {
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throw new APIMessageException(
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APIMessage.ErrorMessage.BINDING_ERROR,
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String.valueOf(result.getStatusCode()));
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} else {
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System.out.println(result.getBody());
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}
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} catch (final Exception e) {
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throw new APIMessageException(APIMessage.ErrorMessage.BINDING_ERROR, e.getMessage());
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}
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return true;
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});
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}
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@Override
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@ -65,4 +152,132 @@ public class ExamZOOMProctoringService implements ExamProctoringService {
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return null;
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}
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protected String createJWT(
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final String appKey,
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final CharSequence appSecret,
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final Long expTime) throws NoSuchAlgorithmException, InvalidKeyException {
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final StringBuilder builder = new StringBuilder();
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final Encoder urlEncoder = Base64.getUrlEncoder().withoutPadding();
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final String jwtHeaderPart = urlEncoder.encodeToString(
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ZOOM_ACCESS_TOKEN_HEADER.getBytes(StandardCharsets.UTF_8));
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final String jwtPayload = createPayload(appKey, expTime);
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final String jwtPayloadPart = urlEncoder.encodeToString(
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jwtPayload.getBytes(StandardCharsets.UTF_8));
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final String message = jwtHeaderPart + "." + jwtPayloadPart;
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final Mac sha256_HMAC = Mac.getInstance(TOKEN_ENCODE_ALG);
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final SecretKeySpec secret_key = new SecretKeySpec(
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Utils.toByteArray(appSecret),
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TOKEN_ENCODE_ALG);
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sha256_HMAC.init(secret_key);
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final String hash = urlEncoder.encodeToString(
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sha256_HMAC.doFinal(Utils.toByteArray(message)));
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builder.append(message)
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.append(".")
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.append(hash);
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return builder.toString();
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}
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protected String createPayload(
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final String clientKey,
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final Long expTime) {
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return String.format(
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ZOOM_ACCESS_TOKEN_PAYLOAD.replaceAll(" ", "").replaceAll("\n", ""),
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clientKey,
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expTime);
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}
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private long forExam(final ProctoringServiceSettings examProctoring) {
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if (examProctoring.examId == null) {
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throw new IllegalStateException("Missing exam identifier from ExamProctoring data");
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}
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long expTime = System.currentTimeMillis() + Constants.DAY_IN_MILLIS;
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if (this.examSessionService.isExamRunning(examProctoring.examId)) {
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final Exam exam = this.examSessionService.getRunningExam(examProctoring.examId)
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.getOrThrow();
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if (exam.endTime != null) {
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expTime = exam.endTime.getMillis();
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}
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}
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return expTime;
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}
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private class ZoomRestCallTemplate {
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final ProctoringServiceSettings proctoringSettings;
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final RestTemplate restTemplate;
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final HttpHeaders httpHeaders;
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private final CircuitBreaker<ResponseEntity<String>> circuitBreaker;
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public ZoomRestCallTemplate(final ProctoringServiceSettings proctoringSettings)
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throws InvalidKeyException, NoSuchAlgorithmException {
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this.proctoringSettings = proctoringSettings;
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this.restTemplate = new RestTemplate(ExamZOOMProctoringService.this.clientHttpRequestFactoryService
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.getClientHttpRequestFactory()
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.getOrThrow());
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final String jwt = createJWT(
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proctoringSettings.appKey,
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proctoringSettings.appSecret,
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System.currentTimeMillis() + Constants.MINUTE_IN_MILLIS);
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this.httpHeaders = new HttpHeaders();
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this.httpHeaders.set(HttpHeaders.AUTHORIZATION, "Bearer " + jwt);
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this.httpHeaders.set(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON_VALUE);
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this.circuitBreaker = ExamZOOMProctoringService.this.asyncService.createCircuitBreaker(
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2,
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10 * Constants.SECOND_IN_MILLIS,
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10 * Constants.SECOND_IN_MILLIS);
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}
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public ResponseEntity<String> callGET(final String url) {
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return exchange(null, url, null);
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}
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public ResponseEntity<String> callGET(final String url, final Map<String, ?> uriVariables) {
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return exchange(null, url, uriVariables);
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}
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private ResponseEntity<String> exchange(
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final Object body,
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final String url,
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final Map<String, ?> uriVariables) {
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final Result<ResponseEntity<String>> protectedRunResult = this.circuitBreaker.protectedRun(() -> {
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final HttpEntity<Object> httpEntity = (body != null)
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? new HttpEntity<>(body, this.httpHeaders)
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: new HttpEntity<>(this.httpHeaders);
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final ResponseEntity<String> result = (uriVariables != null)
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? this.restTemplate.exchange(
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url,
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HttpMethod.GET,
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httpEntity,
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String.class,
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uriVariables)
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: this.restTemplate.exchange(
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url,
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HttpMethod.GET,
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httpEntity,
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String.class);
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if (result.getStatusCode() != HttpStatus.OK) {
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log.warn("Zoom API call to {} respond not 200 -> {}", url, result.getStatusCode());
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}
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return result;
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});
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return protectedRunResult.getOrThrow();
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}
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}
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}
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