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Posted to dev@knox.apache.org by "Larry McCay (JIRA)" <ji...@apache.org> on 2018/04/30 15:39:00 UTC
[jira] [Updated] (KNOX-912) introduce a rule "decode" attribute to
overwrite encoding behavior
[ https://issues.apache.org/jira/browse/KNOX-912?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Larry McCay updated KNOX-912:
-----------------------------
Fix Version/s: (was: 0.15.0)
Future
> introduce a rule "decode" attribute to overwrite encoding behavior
> ------------------------------------------------------------------
>
> Key: KNOX-912
> URL: https://issues.apache.org/jira/browse/KNOX-912
> Project: Apache Knox
> Issue Type: Improvement
> Components: Server
> Affects Versions: 0.13.0
> Environment: all
> Reporter: Jeffrey E Rodriguez
> Assignee: Jeffrey E Rodriguez
> Priority: Major
> Fix For: Future
>
>
> KNOX-791 - which tries to address the escaping issues have caused some issues in some cases where we need to decode "&amp;" to "&" like in output rewrites of query parameters
> An improvement proposal to introduce a rule decode attribute to set decoding behavior.
> Default is no decoding.
> This allows to turn this “on” for a specific rule.
> Before KNOX-791 "&amp;" used to be decoded to "&" during html parsing.
> The issue is that in OUT rewrite rule we will not able to match the query string.
> Example:
> given html
> <a href=http://foo:99/test/&q=bar”>test</a>
> rule:
> {code:xml}
> <rule dir="OUT" name="test" pattern="("{scheme}://{host}:{port}/test/?{*}">
> <rewrite template="("http://newtest/test/?{*}?{scheme}?{host}?{port}"/>
> </rule>
> {code}
> This rule above will not work since the “& amp;“ will not be matched.
> The proposed change is:
> {code:xml}
> <rule dir="OUT" name="test" decode="true" pattern="("{scheme}://{host}:{port}/test/?{*}">
> <rewrite template="("http://newtest/test/?{*}?{scheme}?{host}?{port}"/>
> </rule>
> {code}
> This will overwrite the default behavior and decode the the &
> The following test illustrates the issue of what we would like
> to solve.
> {code:title=testAmpRewrite.java|borderStyle=solid}
> @Test
> public void testAmpRewrite() throws Exception {
> URI goodUri, badUri, outputUri;
> Matcher<Void> matcher;
> Matcher<Void>.Match match;
> Template input, pattern, template;
> badUri = new URI(
> "http://foo:99/test/&q=bar"); // we should be able to match
> goodUri = new URI(
> "http://foo:99/test/?q=bar");
> input = Parser.parseLiteral(goodUri.toString());
> pattern = Parser.parseTemplate("{scheme}://{host}:{port}/test/?{*}");
> template = Parser.parseTemplate("http://newtest/test/?{*}?{scheme}?{host}?{port}");
> // Match query string
> String expectedUri = "http://newtest/test/?scheme=http&host=foo&port=99&q=bar";
> matcher = new Matcher<Void>();
> matcher.add(pattern, null);
> match = matcher.match(input);
> assertNotNull( match );
> outputUri = Expander.expand(template, match.getParams(), null);
> assertEquals("Not matched", expectedUri, outputUri.toString());
> // no match of query string ?
> input = Parser.parseLiteral(badUri.toString());
> match = matcher.match(input);
> assertNull( match);
> }
> {code}
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