adore-djatoka: Support for source image URLs protected by basic authentication

0001-Support-basic-auth-on-source-URLs.md

Support passing basic authentication credentials via source image URLs (rft_id)

This patch allows adore-djatoka to properly resolve source image URLs that contain URL-encoded basic auth credentials, for example:

http://user:[email protected]/gmd/gmd433/g4330/g4330/np000066.jp2

Note that this way of passing credentials has been deprecated in RFC3986. It is only used to pass the credentials to adore-djatoka, which then uses the Authorization header to communicate with the target server.

Previously adore-djatoka would parse the source URL, but not use the URL-encoded credentials to make the subsequent request to the source URL.

With this patch adore-djatoka can resolve source URLs like this:

curl -G
'https://localhost.lan/adore-djatoka/resolver' \
  -d url_ver=Z39.88-2004 \
  -d rft_id=http://user:[email protected]/gmd/gmd433/g4330/g4330/np000066.jp2 \
  -d svc_id=info:lanl-repo/svc/getRegion \
  -d svc_val_fmt=info:ofi/fmt:kev:mtx:jpeg2000 \
  -d svc.format=image/jpeg \
  -d svc.level=3

It can be applied on top of the adore-ajatoka 1.1 source code available from sourceforge.net/projects/djatoka.

0001-Support-basic-auth-on-source-URLs.patch

From 3b9eb92e96d0da00871507bdf3c6d33bf2c3b0fd Mon Sep 17 00:00:00 2001
From: Frederik Leonhardt <[email protected]>
Date: Thu, 11 May 2017 08:23:39 +1200
Subject: [PATCH] Support basic auth on source URLs

---
 src/gov/lanl/adore/djatoka/util/IOUtils.java | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/gov/lanl/adore/djatoka/util/IOUtils.java b/src/gov/lanl/adore/djatoka/util/IOUtils.java
index e7cbd8f..f01beed 100644
--- a/src/gov/lanl/adore/djatoka/util/IOUtils.java
+++ b/src/gov/lanl/adore/djatoka/util/IOUtils.java
@@ -116,6 +116,14 @@ public class IOUtils {
         } else {
 			try {
 				URLConnection huc = location.openConnection();
+
+				// Set basic auth if applicable
+				if (location.getUserInfo() != null) {
+				  final String userPass = location.getUserInfo();
+				  final String basicAuth = "Basic " + javax.xml.bind.DatatypeConverter.printBase64Binary(userPass.getBytes());
+	              huc.setRequestProperty ("Authorization", basicAuth);
+				}
+
 				huc.connect();
 				in = huc.getInputStream();
 			} catch (MalformedURLException e) {
-- 
2.7.4