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fixed StackOverflowError from issue #523

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This commit is contained in:
Jeremy Long
2016-07-06 06:32:57 -04:00
parent d264d804c8
commit 85de173086
1 changed files with 19 additions and 8 deletions
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27
dependency-check-utils/src/main/java/org/owasp/dependencycheck/utils/Downloader.java
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@@ -32,6 +32,7 @@ import java.security.InvalidAlgorithmParameterException;
import java.util.zip.GZIPInputStream;
import java.util.zip.InflaterInputStream;
import static java.lang.String.format;
import static java.lang.String.format;
/**
@@ -172,7 +173,7 @@ public final class Downloader {
}
LOGGER.debug("Download of {} complete", url.toString());
} catch (IOException ex) {
analyzeException(ex);
checkException(ex);
final String msg = format("Error saving '%s' to file '%s'%nConnection Timeout: %d%nEncoding: %s%n",
url.toString(), outputPath.getAbsolutePath(), conn.getConnectTimeout(), encoding);
throw new DownloadFailedException(msg, ex);
@@ -203,8 +204,7 @@ public final class Downloader {
}
}
}
/**
/**
* Makes an HTTP Head request to retrieve the last modified date of the given URL. If the file:// protocol is specified, then
* the lastTimestamp of the file is returned.
*
@@ -213,6 +213,18 @@ public final class Downloader {
* @throws DownloadFailedException is thrown if an exception occurs making the HTTP request
*/
public static long getLastModified(URL url) throws DownloadFailedException {
return getLastModified(url, false);
}
/**
* Makes an HTTP Head request to retrieve the last modified date of the given URL. If the file:// protocol is specified, then
* the lastTimestamp of the file is returned.
*
* @param url the URL to retrieve the timestamp from
* @param isRetry indicates if this is a retry - to prevent endless loop and stack overflow
* @return an epoch timestamp
* @throws DownloadFailedException is thrown if an exception occurs making the HTTP request
*/
private static long getLastModified(URL url, boolean isRetry) throws DownloadFailedException {
long timestamp = 0;
//TODO add the FTP protocol?
if ("file".equalsIgnoreCase(url.getProtocol())) {
@@ -240,17 +252,16 @@ public final class Downloader {
} catch (URLConnectionFailureException ex) {
throw new DownloadFailedException(format("Error creating URL Connection for HTTP %s request.", httpMethod), ex);
} catch (IOException ex) {
analyzeException(ex);
checkException(ex);
try {
//retry
if (!Settings.getBoolean(Settings.KEYS.DOWNLOADER_QUICK_QUERY_TIMESTAMP)) {
if (!isRetry && !Settings.getBoolean(Settings.KEYS.DOWNLOADER_QUICK_QUERY_TIMESTAMP)) {
Settings.setBoolean(Settings.KEYS.DOWNLOADER_QUICK_QUERY_TIMESTAMP, true);
return getLastModified(url);
return getLastModified(url, true);
}
} catch (InvalidSettingException ex1) {
LOGGER.debug("invalid setting?", ex);
}
throw new DownloadFailedException(format("Error making HTTP %s request.", httpMethod), ex);
} finally {
if (conn != null) {
@@ -272,7 +283,7 @@ public final class Downloader {
* @param ex the original exception
* @throws DownloadFailedException a wrapper exception that contains the original exception as the cause
*/
protected static void analyzeException(IOException ex) throws DownloadFailedException {
protected static void checkException(IOException ex) throws DownloadFailedException {
Throwable cause = ex;
while (cause != null) {
if (cause instanceof InvalidAlgorithmParameterException) {