com.networknt.rule.conquest.ConquestTokenRequestTransformAction Maven / Gradle / Ivy
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A yaml rule action implementation to get the conquest authorization token and inject into the Authorization header for any external conquest API request.
package com.networknt.rule.conquest;
import com.networknt.client.ClientConfig;
import com.networknt.client.Http2Client;
import com.networknt.client.oauth.TokenResponse;
import com.networknt.client.ssl.TLSConfig;
import com.networknt.config.JsonMapper;
import com.networknt.config.TlsUtil;
import com.networknt.proxy.PathPrefixAuth;
import com.networknt.rule.IAction;
import com.networknt.rule.RuleActionValue;
import com.networknt.rule.RuleConstants;
import com.networknt.utility.HashUtil;
import com.networknt.utility.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.ProxySelector;
import java.net.URI;
import java.net.URLEncoder;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.nio.charset.StandardCharsets;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.Signature;
import java.text.MessageFormat;
import java.time.Duration;
import java.util.*;
import java.util.stream.Collectors;
/**
* It is called from the request transform interceptor from the light-gateway to get the conquest planning API access
* token to put into the Authorization header in order to access the conquest planning APIs. For the original consumer,
* it might have another token in the Authorization header for the gateway to verify in order to invoke the external
* service handler. Once the verification is done, the Authorization header will be replaced with the conquest token
* from the cache or retrieved from the conquest if it is expired or about to expire.
*
* @author Steve Hu
*/
public class ConquestTokenRequestTransformAction implements IAction {
private static final Logger logger = LoggerFactory.getLogger(ConquestTokenRequestTransformAction.class);
// change the config to static so that it can cache the token retrieved until expiration time.
private static ConquestConfig config = ConquestConfig.load();
private static HttpClient client;
public ConquestTokenRequestTransformAction() {
}
@Override
public void performAction(Map objMap, Map resultMap, Collection actionValues) {
resultMap.put(RuleConstants.RESULT, true);
String requestPath = (String)objMap.get("requestPath");
if(logger.isTraceEnabled()) logger.trace("requestPath = " + requestPath);
for(PathPrefixAuth pathPrefixAuth: config.getPathPrefixAuths()) {
if(requestPath.startsWith(pathPrefixAuth.getPathPrefix())) {
if(logger.isTraceEnabled()) logger.trace("found with requestPath = " + requestPath + " prefix = " + pathPrefixAuth.getPathPrefix());
if(System.currentTimeMillis() >= (pathPrefixAuth.getExpiration())) {
if(logger.isTraceEnabled()) logger.trace("Cached token {} is expired with current time {} and expired time {}", pathPrefixAuth.getAccessToken() != null ? pathPrefixAuth.getAccessToken().substring(0, 20) : null, System.currentTimeMillis(), pathPrefixAuth.getExpiration());
// get a new access token.
String jwt = null;
try {
jwt = createJwt(pathPrefixAuth.getCertFilename(), pathPrefixAuth.getCertPassword(), pathPrefixAuth.getAuthIssuer(), pathPrefixAuth.getAuthSubject(), pathPrefixAuth.getAuthAudience(), HashUtil.generateUUID(), pathPrefixAuth.getTokenTtl());
} catch (Exception e) {
logger.error("Exception", e);
return;
}
if(jwt != null) {
// use the jwt to get the access token.
TokenResponse tokenResponse = getAccessToken(pathPrefixAuth.getTokenUrl(), jwt);
if(tokenResponse != null) {
pathPrefixAuth.setExpiration(System.currentTimeMillis() + tokenResponse.getExpiresIn() * 1000 - 60000);
pathPrefixAuth.setAccessToken(tokenResponse.getAccessToken());
if(logger.isTraceEnabled()) logger.trace("Got a new token {} and cached it with expiration time {}", pathPrefixAuth.getAccessToken() != null ? pathPrefixAuth.getAccessToken().substring(0, 20) : null, pathPrefixAuth.getExpiration());
} else {
return;
}
}
}
// either a new token is retrieved or cached token is not expired. Put the token into the Authorization header.
if(pathPrefixAuth.getAccessToken() != null) {
Map requestHeaders = new HashMap<>();
Map updateMap = new HashMap<>();
updateMap.put("Authorization", "Bearer " + pathPrefixAuth.getAccessToken());
requestHeaders.put("update", updateMap);
resultMap.put("requestHeaders", requestHeaders);
return;
}
}
}
}
private String createJwt(String certFilename, String certPassword, String issuer, String subject, String audience, String jti, int tokenTtl) throws Exception {
if(logger.isTraceEnabled()) logger.trace("certFilename = " + certFilename + " certPassword = " + StringUtils.maskHalfString(certPassword) + " issuer = " + issuer + " subject = " + subject + " audience = " + audience + " jti = " + jti + " tokenTtl = " + tokenTtl);
String header = "{\"typ\":\"JWT\", \"alg\":\"RS256\"}";
String claimTemplate = "'{'\"iss\": \"{0}\", \"sub\": \"{1}\", \"aud\": \"{2}\", \"jti\": \"{3}\", \"iat\": {4}, \"exp\": {5}'}'";
StringBuffer token = new StringBuffer();
// Encode the JWT Header and add it to our string to sign
token.append(org.apache.commons.codec.binary.Base64.encodeBase64URLSafeString(header.getBytes("UTF-8")));
// Separate with a period
token.append(".");
String[] claimArray = new String[6];
claimArray[0] = issuer;
claimArray[1] = subject;
claimArray[2] = audience;
claimArray[3] = jti;
claimArray[4] = Long.toString(( System.currentTimeMillis()/1000 ));
claimArray[5] = Long.toString(( System.currentTimeMillis()/1000 ) + tokenTtl);
MessageFormat claims;
claims = new MessageFormat(claimTemplate);
String payload = claims.format(claimArray);
// Add the encoded claims object
token.append(org.apache.commons.codec.binary.Base64.encodeBase64URLSafeString(payload.getBytes("UTF-8")));
KeyStore keystore = TlsUtil.loadKeyStore(certFilename, certPassword.toCharArray());
PrivateKey privateKey = (PrivateKey) keystore.getKey(certFilename.substring(0, certFilename.indexOf(".")), certPassword.toCharArray());
// Sign the JWT Header + "." + JWT Claims Object
Signature signature = Signature.getInstance("SHA256withRSA");
signature.initSign(privateKey);
signature.update(token.toString().getBytes("UTF-8"));
String signedPayload = org.apache.commons.codec.binary.Base64.encodeBase64URLSafeString(signature.sign());
// Separate with a period
token.append(".");
// Add the encoded signature
token.append(signedPayload);
return token.toString();
}
private TokenResponse getAccessToken(String serverUrl, String jwt) {
TokenResponse tokenResponse = null;
if(client == null) {
try {
HttpClient.Builder clientBuilder = HttpClient.newBuilder()
.followRedirects(HttpClient.Redirect.NORMAL)
.connectTimeout(Duration.ofMillis(ClientConfig.get().getTimeout()))
.sslContext(Http2Client.createSSLContext());
if(config.getProxyHost() != null) clientBuilder.proxy(ProxySelector.of(new InetSocketAddress(config.getProxyHost(), config.getProxyPort() == 0 ? 443 : config.getProxyPort())));
if(config.isEnableHttp2()) clientBuilder.version(HttpClient.Version.HTTP_2);
// this a workaround to bypass the hostname verification in jdk11 http client.
Map tlsMap = (Map)ClientConfig.get().getMappedConfig().get(Http2Client.TLS);
if(tlsMap != null && !Boolean.TRUE.equals(tlsMap.get(TLSConfig.VERIFY_HOSTNAME))) {
final Properties props = System.getProperties();
props.setProperty("jdk.internal.httpclient.disableHostnameVerification", Boolean.TRUE.toString());
}
client = clientBuilder.build();
} catch (IOException e) {
logger.error("Cannot create HttpClient:", e);
return null;
}
}
try {
if(serverUrl == null) {
logger.error("tokenUrl is null");
return null;
}
Map parameters = new HashMap<>();
parameters.put("grant_type", "client_credentials");
parameters.put("client_assertion_type", "urn:ietf:params:oauth:client-assertion-type:jwt-bearer");
parameters.put("client_assertion", jwt);
String form = parameters.entrySet()
.stream()
.map(e -> e.getKey() + "=" + URLEncoder.encode(e.getValue(), StandardCharsets.UTF_8))
.collect(Collectors.joining("&"));
HttpRequest request = HttpRequest.newBuilder()
.uri(URI.create(serverUrl))
.headers("Content-Type", "application/x-www-form-urlencoded")
.POST(HttpRequest.BodyPublishers.ofString(form))
.build();
HttpResponse response = client.send(request, HttpResponse.BodyHandlers.ofString());
// {"access_token":"eyJ0eXAiOiJKV1QiLCJ6aXAiOiJOT05FIiwia2lkIjoiM0ptbzhUWFJtQTJ2U2hkcFJ6UHpUbC9Xak1zPSIsImFsZyI6IlJTMjU2In0.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.Fvp2bs2h4pRo9Dcd_w7yMJGwY0Acq4h1fouYbo6b0WVVu8KTTC3Xxrl59kPT7f8Rsd-BjeORM83VypgAVWBvEhZWSOY_PpEIgPL0_EHBDOsOyd9x6Q_78WtVxpQ37Vag3nGT_EZA2b5ECWX1fg4C0qIJ4uUf4wyI6a91fui-95EgVBRsdsNa7TaX4AcsCX4T_96X-sqUY127YGyKV20S9ppKzwpg2kR1Xp43_HxtyBu5i-oSj8ry1EVZd5I0hTl2dzddyYUT8SfCiitS-BrAXC_1MM91td00kn3WlMjFahE5PcC6rg8yVFGpG0OQyIbElvCnfSeqNLjx3FPyVx3rqw","scope":"api.conquestplanning.com","token_type":"Bearer","expires_in":1799}
if(response.statusCode() == 200) {
// construct a token response and return it.
Map map = JsonMapper.string2Map(response.body().toString());
if(map != null) {
tokenResponse = new TokenResponse();
tokenResponse.setAccessToken((String)map.get("access_token"));
tokenResponse.setTokenType((String)map.get("token_type"));
tokenResponse.setScope((String)map.get("scope"));
tokenResponse.setExpiresIn((Integer)map.get("expires_in"));
return tokenResponse;
} else {
logger.error("response body cannot be parsed as a JSON " + response.body());
return null;
}
} else {
logger.error("Error in getting the token with status code " + response.statusCode() + " and body " + response.body().toString());
return null;
}
} catch (Exception e) {
logger.error("Exception:", e);
return null;
}
}
}