ca.uhn.hl7v2.hoh.util.HTTPUtils Maven / Gradle / Ivy

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package ca.uhn.hl7v2.hoh.util;

import ca.uhn.hl7v2.hoh.util.repackage.Base64;
import jakarta.servlet.ServletOutputStream;

import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;


public class HTTPUtils {

	/** ISO-8859-1 */
	public static final Charset DEFAULT_CHARSET;

	static {
		DEFAULT_CHARSET = StandardCharsets.ISO_8859_1;
	}

	/**
	 * Non instantiable
	 */
	private HTTPUtils() {
		super();
	}

	public static void write400BadRequest(OutputStream theOutputStream, String theMessage) throws IOException {
		write400BadRequest(theOutputStream, theMessage, true);
	}

	public static void write400BadRequest(OutputStream theOutputStream, String theMessage, boolean theWriteHeaders) throws IOException {
		StringBuilder b = new StringBuilder();
		if (theWriteHeaders) {
			b.append("HTTP/1.1 400 Bad Request\r\n");
			b.append("Content-Type: text/html; charset=ISO-8859-1\r\n");
			b.append("\r\n");
		}
		b.append("400 - Bad Request");
		b.append("");
		b.append("");
		b.append("HTTP 400 - Bad Request");
		b.append("");
		b.append(theMessage);
		b.append("");
		b.append("HAPI (HL7 over HTTP) version ");
		b.append(VersionLogger.getVersion());
		b.append("");
		b.append("");
		b.append("");

		theOutputStream.write(b.toString().getBytes(DEFAULT_CHARSET));
		theOutputStream.flush();
	}

	public static void write400SignatureVerificationFailed(OutputStream theOutputStream, boolean theWriteHeaders) throws IOException {
		StringBuilder b = new StringBuilder();
		if (theWriteHeaders) {
			b.append("HTTP/1.1 400 Bad Request\r\n");
			b.append("Content-Type: text/html; charset=ISO-8859-1\r\n");
			b.append("\r\n");
		}
		b.append("400 - Bad Request");
		b.append("");
		b.append("");
		b.append("HTTP 400 - Bad Request");
		b.append("");
		b.append("Failed to verify message signature");
		b.append("");
		b.append("HAPI (HL7 over HTTP) version ");
		b.append(VersionLogger.getVersion());
		b.append("");
		b.append("");
		b.append("");

		theOutputStream.write(b.toString().getBytes(DEFAULT_CHARSET));
		theOutputStream.flush();
	}

	public static void write401Unauthorized(OutputStream theOutputStream) throws IOException {
		write401Unauthorized(theOutputStream, true);
	}

	public static void write401Unauthorized(OutputStream theOutputStream, boolean theWriteHeaders) throws IOException {
		StringBuilder b = new StringBuilder();
		if (theWriteHeaders) {
			b.append("HTTP/1.1 401 Unauthorized\r\n");
			b.append("Content-Type: text/html; charset=ISO-8859-1\r\n");
			b.append("\r\n");
		}
		b.append("401 - Not Authorized");
		b.append("");
		b.append("");
		b.append("HTTP 401 - Not Authorized");
		b.append("HAPI (HL7 over HTTP) version ");
		b.append(VersionLogger.getVersion());
		b.append("");
		b.append("");
		b.append("");

		theOutputStream.write(b.toString().getBytes(DEFAULT_CHARSET));
		theOutputStream.flush();
	}

	public static void write500InternalServerError(ServletOutputStream theOutputStream, String theMessage, boolean theWriteHeaders) throws IOException {
		StringBuilder b = new StringBuilder();
		if (theWriteHeaders) {
			b.append("HTTP/1.1 500 Internal Server Error\r\n");
			b.append("Content-Type: text/html; charset=ISO-8859-1\r\n");
			b.append("\r\n");
		}
		b.append("HTTP 500 - Internal Server Error");
		b.append("");
		b.append("");
		b.append("HTTP 500 - Internal Server Error");
		b.append("");
		b.append(theMessage);
		b.append("");
		b.append("HAPI (HL7 over HTTP) version ");
		b.append(VersionLogger.getVersion());
		b.append("");
		b.append("");
		b.append("");

		theOutputStream.write(b.toString().getBytes(DEFAULT_CHARSET));
		theOutputStream.flush();
	}

}