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19 package org.eclipse.jetty.rewrite.handler;
20
21 import java.io.IOException;
22 import java.util.regex.Matcher;
23
24 import javax.servlet.http.HttpServletRequest;
25 import javax.servlet.http.HttpServletResponse;
26
27 import org.eclipse.jetty.http.HttpURI;
28 import org.eclipse.jetty.server.Request;
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38 public class RewriteRegexRule extends RegexRule implements Rule.ApplyURI
39 {
40 private String _replacement;
41 private String _query;
42 private boolean _queryGroup;
43
44
45 public RewriteRegexRule()
46 {
47 _handling = false;
48 _terminating = false;
49 }
50
51
52
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55
56
57 public void setReplacement(String replacement)
58 {
59 String[] split=replacement.split("\\?",2);
60 _replacement = split[0];
61 _query=split.length==2?split[1]:null;
62 _queryGroup=_query!=null && _query.contains("$Q");
63 }
64
65
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67
68
69
70 @Override
71 public String apply(String target, HttpServletRequest request, HttpServletResponse response, Matcher matcher) throws IOException
72 {
73 target=_replacement;
74 String query=_query;
75 for (int g=1;g<=matcher.groupCount();g++)
76 {
77 String group=matcher.group(g);
78 if (group==null)
79 group="";
80 else
81 group = Matcher.quoteReplacement(group);
82 target=target.replaceAll("\\$"+g,group);
83 if (query!=null)
84 query=query.replaceAll("\\$"+g,group);
85 }
86
87 if (query!=null)
88 {
89 if (_queryGroup)
90 query=query.replace("$Q",request.getQueryString()==null?"":request.getQueryString());
91 request.setAttribute("org.eclipse.jetty.rewrite.handler.RewriteRegexRule.Q",query);
92 }
93
94 return target;
95 }
96
97
98 @Override
99 public void applyURI(Request request, String oldTarget, String newTarget) throws IOException
100 {
101 if (_query==null)
102 {
103 request.setRequestURI(newTarget);
104 }
105 else
106 {
107 String query=(String)request.getAttribute("org.eclipse.jetty.rewrite.handler.RewriteRegexRule.Q");
108
109 if (!_queryGroup && request.getQueryString()!=null)
110 query=request.getQueryString()+"&"+query;
111 HttpURI uri=new HttpURI(newTarget+"?"+query);
112 request.setUri(uri);
113 request.setRequestURI(newTarget);
114 request.setQueryString(query);
115 }
116 }
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120
121
122 @Override
123 public String toString()
124 {
125 return super.toString()+"["+_replacement+"]";
126 }
127 }