From 75ce8c3a91d8b80bcc6bc7bd6e083606215f7262 Mon Sep 17 00:00:00 2001
From: Jakob Heher <jakob.heher@iaik.tugraz.at>
Date: Thu, 6 Oct 2022 11:11:09 +0200
Subject: re-do the #52 hack to avoid dependency on atruststatus

---
 .../asit/pdfover/signer/pdfas/PdfAs4BKUSLConnector.java  | 15 +++++++++------
 .../java/at/asit/pdfover/signer/pdfas/PdfAs4Signer.java  | 16 +++++++++++++---
 2 files changed, 22 insertions(+), 9 deletions(-)

(limited to 'pdf-over-signer/src/main/java/at/asit/pdfover/signer')

diff --git a/pdf-over-signer/src/main/java/at/asit/pdfover/signer/pdfas/PdfAs4BKUSLConnector.java b/pdf-over-signer/src/main/java/at/asit/pdfover/signer/pdfas/PdfAs4BKUSLConnector.java
index 7dd2fedc..1396255a 100644
--- a/pdf-over-signer/src/main/java/at/asit/pdfover/signer/pdfas/PdfAs4BKUSLConnector.java
+++ b/pdf-over-signer/src/main/java/at/asit/pdfover/signer/pdfas/PdfAs4BKUSLConnector.java
@@ -91,8 +91,7 @@ public class PdfAs4BKUSLConnector extends BaseSLConnector {
 		} catch (SignatureException e) {
 			throw new PDFIOException("error.pdf.io.03", e);
 		} catch (UserCancelledException e) {
-			// TODO: find out how to communicate this out to PDF-AS?
-			throw new PDFIOException("error.pdf.io.03", e);
+			throw new SLPdfAsException(6001, "Vorgang durch den Benutzer abgebrochen.");
 		}
 
 		if (element == null) {
@@ -108,12 +107,16 @@ public class PdfAs4BKUSLConnector extends BaseSLConnector {
 		throw new PdfAsException("error.pdf.io.03");
 	}
 
+	/** hack cf. #52 */
+	public static Exception originalExceptionSwallowedByPDFASNPE = null;
 	/* (non-Javadoc)
 	 * @see at.gv.egiz.sl.util.ISLConnector#sendCMSRequest(at.gv.egiz.sl.util.RequestPackage, at.gv.egiz.pdfas.lib.api.sign.SignParameter)
 	 */
 	@Override
 	public CreateCMSSignatureResponseType sendCMSRequest(RequestPackage pack,
 			SignParameter parameter) throws PdfAsException {
+		/* outermost try blocks are a hack cf. #52 */
+try { try {
 		JAXBElement<?> element = null;
 		try {
 			
@@ -145,8 +148,7 @@ public class PdfAs4BKUSLConnector extends BaseSLConnector {
 		} catch (SignatureException e) {
 			throw new PDFIOException("error.pdf.io.03", e);
 		} catch (UserCancelledException e) {
-			// TODO: find out how to communicate this out to PDF-AS?
-			throw new PDFIOException("error.pdf.io.03", e);
+			throw new SLPdfAsException(6001, "Vorgang durch den Benutzer abgebrochen.");
 		}
 
 		if (element == null) {
@@ -161,9 +163,10 @@ public class PdfAs4BKUSLConnector extends BaseSLConnector {
 		} else if (element.getValue() instanceof ErrorResponseType) {
 			ErrorResponseType errorResponseType = (ErrorResponseType) element
 					.getValue();
-			throw new SLPdfAsException(errorResponseType.getErrorCode(),
-					errorResponseType.getInfo());
+			throw new SLPdfAsException(errorResponseType.getErrorCode(), errorResponseType.getInfo());
 		}
 		throw new PdfAsException("error.pdf.io.03");
+} finally { originalExceptionSwallowedByPDFASNPE = null; } } catch (Exception e) { originalExceptionSwallowedByPDFASNPE = e; throw e; }
 	}
+
 }
diff --git a/pdf-over-signer/src/main/java/at/asit/pdfover/signer/pdfas/PdfAs4Signer.java b/pdf-over-signer/src/main/java/at/asit/pdfover/signer/pdfas/PdfAs4Signer.java
index 561452a4..7afa4ec5 100644
--- a/pdf-over-signer/src/main/java/at/asit/pdfover/signer/pdfas/PdfAs4Signer.java
+++ b/pdf-over-signer/src/main/java/at/asit/pdfover/signer/pdfas/PdfAs4Signer.java
@@ -1,6 +1,7 @@
 package at.asit.pdfover.signer.pdfas;
 
 import java.io.ByteArrayOutputStream;
+import java.util.Objects;
 import java.util.UUID;
 
 import javax.activation.DataSource;
@@ -155,13 +156,22 @@ public class PdfAs4Signer {
 				result.setSignedDocument(new ByteArrayDocumentSource(state.output.toByteArray()));
 				return result;
 			}
-		} catch (PdfAsException | PDFASError e) {
-			{ // TODO hack around pdf-as not handling this error code properly cf. #124
+		} catch (PdfAsException | PDFASError ex) {
+			// workaround for PDF-AS nullpointerexception intercepting the actual exception
+			// cf. issue #52
+			// this is a bit of a hack...
+			Exception e = ex;
+			{
+				if ((e instanceof PDFASError) && (e.getCause() instanceof NullPointerException))
+					e = Objects.requireNonNullElse(PdfAs4BKUSLConnector.originalExceptionSwallowedByPDFASNPE, e);
+			}
+
+			{
 				Throwable rootCause = e;
 				while (rootCause.getCause() != null)
 					rootCause = rootCause.getCause();
 				try { /* error code 60xx is user cancellation */
-					int errorCode = Integer.parseInt(((SLPdfAsException)rootCause).getMessage().split(":",2)[0].trim());
+					int errorCode = ((SLPdfAsException)rootCause).getCode();
 					if ((6000 <= errorCode) && (errorCode <= 6099))
 						throw new UserCancelledException();
 				} catch (ClassCastException e2) { /* fall through to wrapped throw */}
-- 
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