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Fixing regex bypass issue #4336
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110 changes: 110 additions & 0 deletions
110
common/src/main/java/org/opensearch/ml/common/httpclient/MLValidatableAsyncHttpClient.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| package org.opensearch.ml.common.httpclient; | ||
|
|
||
| import java.net.Inet4Address; | ||
| import java.net.InetAddress; | ||
| import java.net.UnknownHostException; | ||
| import java.util.Arrays; | ||
| import java.util.Locale; | ||
| import java.util.concurrent.CompletableFuture; | ||
|
|
||
| import lombok.extern.log4j.Log4j2; | ||
| import software.amazon.awssdk.http.async.AsyncExecuteRequest; | ||
| import software.amazon.awssdk.http.async.SdkAsyncHttpClient; | ||
|
|
||
| @Log4j2 | ||
| public class MLValidatableAsyncHttpClient implements SdkAsyncHttpClient { | ||
| private final SdkAsyncHttpClient delegate; | ||
| private final boolean connectorPrivateIpEnabled; | ||
|
|
||
| protected MLValidatableAsyncHttpClient(SdkAsyncHttpClient client, boolean connectorPrivateIpEnabled) { | ||
| this.delegate = client; | ||
| this.connectorPrivateIpEnabled = connectorPrivateIpEnabled; | ||
| } | ||
|
|
||
| @Override | ||
| public CompletableFuture<Void> execute(AsyncExecuteRequest request) { | ||
| String protocol = request.request().protocol(); | ||
| String host = request.request().host(); | ||
| int port = request.request().port(); | ||
| try { | ||
| validate(protocol, host, port, connectorPrivateIpEnabled); | ||
| return delegate.execute(request); | ||
| } catch (Exception e) { | ||
| log.error("Failed to validate request!", e); | ||
| throw new IllegalArgumentException(e.getMessage(), e); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void close() { | ||
| delegate.close(); | ||
| } | ||
|
|
||
| /** | ||
| * Validate the input parameters, such as protocol, host and port. | ||
| * @param protocol The protocol supported in remote inference, currently only http and https are supported. | ||
| * @param host The host name of the remote inference server, host must be a valid ip address or domain name and must not be localhost. | ||
| * @param port The port number of the remote inference server, port number must be in range [0, 65536]. | ||
| * @param connectorPrivateIpEnabled The port number of the remote inference server, port number must be in range [0, 65536]. | ||
| * @throws UnknownHostException Allow to use private IP or not. | ||
| */ | ||
| public void validate(String protocol, String host, int port, boolean connectorPrivateIpEnabled) throws UnknownHostException { | ||
| if (protocol != null && !"http".equalsIgnoreCase(protocol) && !"https".equalsIgnoreCase(protocol)) { | ||
| log.error("Remote inference protocol is not http or https: {}", protocol); | ||
| throw new IllegalArgumentException("Protocol is not http or https: " + protocol); | ||
| } | ||
| // When port is not specified, the default port is -1, and we need to set it to 80 or 443 based on protocol. | ||
| if (port == -1) { | ||
| if (protocol == null || "http".equals(protocol.toLowerCase(Locale.getDefault()))) { | ||
| port = 80; | ||
| } else { | ||
| port = 443; | ||
| } | ||
| } | ||
| if (port < 0 || port > 65536) { | ||
| log.error("Remote inference port out of range: {}", port); | ||
| throw new IllegalArgumentException("Port out of range: " + port); | ||
| } | ||
| validateIp(host, connectorPrivateIpEnabled); | ||
| } | ||
|
|
||
| private void validateIp(String hostName, boolean connectorPrivateIpEnabled) throws UnknownHostException { | ||
| InetAddress[] addresses = InetAddress.getAllByName(hostName); | ||
| if (!connectorPrivateIpEnabled && hasPrivateIpAddress(addresses)) { | ||
| log.error("Remote inference host name has private ip address: {}", hostName); | ||
| throw new IllegalArgumentException("Remote inference host name has private ip address: " + hostName); | ||
| } | ||
| } | ||
|
|
||
| private boolean hasPrivateIpAddress(InetAddress[] ipAddress) { | ||
| for (InetAddress ip : ipAddress) { | ||
| if (ip instanceof Inet4Address) { | ||
| byte[] bytes = ip.getAddress(); | ||
| if (bytes.length != 4) { | ||
| return true; | ||
| } else { | ||
| if (isPrivateIPv4(bytes)) { | ||
| return true; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return Arrays.stream(ipAddress).anyMatch(x -> x.isSiteLocalAddress() || x.isLoopbackAddress() || x.isAnyLocalAddress()); | ||
| } | ||
|
|
||
| private boolean isPrivateIPv4(byte[] bytes) { | ||
| int first = bytes[0] & 0xff; | ||
| int second = bytes[1] & 0xff; | ||
|
|
||
| // 127.0.0.1, 10.x.x.x, 172.16-31.x.x, 192.168.x.x, 169.254.x.x | ||
| return (first == 10) | ||
| || (first == 172 && second >= 16 && second <= 31) | ||
| || (first == 192 && second == 168) | ||
| || (first == 169 && second == 254); | ||
| } | ||
| } | ||
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