70 lines
2.1 KiB
Java
70 lines
2.1 KiB
Java
package org.keycloak.encoding;
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import org.apache.commons.io.IOUtils;
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import org.jboss.logging.Logger;
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import org.keycloak.models.KeycloakSession;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.util.zip.GZIPOutputStream;
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public class GzipResourceEncodingProvider implements ResourceEncodingProvider {
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private static final Logger logger = Logger.getLogger(ResourceEncodingProvider.class);
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private KeycloakSession session;
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private File cacheDir;
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public GzipResourceEncodingProvider(KeycloakSession session, File cacheDir) {
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this.session = session;
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this.cacheDir = cacheDir;
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}
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public InputStream getEncodedStream(StreamSupplier producer, String... path) {
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StringBuilder sb = new StringBuilder();
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sb.append(cacheDir.getAbsolutePath());
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for (String p : path) {
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sb.append(File.separatorChar);
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sb.append(p);
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}
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sb.append(".gz");
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String filePath = sb.toString();
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try {
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File encodedFile = new File(filePath);
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if (!encodedFile.getCanonicalPath().startsWith(cacheDir.getCanonicalPath())) {
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return null;
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}
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if (!encodedFile.exists()) {
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InputStream is = producer.getInputStream();
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if (is != null) {
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File parent = encodedFile.getParentFile();
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if (!parent.isDirectory()) {
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parent.mkdirs();
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}
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FileOutputStream fos = new FileOutputStream(encodedFile);
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GZIPOutputStream gos = new GZIPOutputStream(fos);
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IOUtils.copy(is, gos);
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gos.close();
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is.close();
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} else {
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encodedFile = null;
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}
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}
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return encodedFile != null ? new FileInputStream(encodedFile) : null;
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} catch (Exception e) {
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logger.warn("Failed to encode resource", e);
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return null;
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}
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}
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public String getEncoding() {
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return "gzip";
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}
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}
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