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comparison src/nabble/view/web/forum/Permalink.java @ 0:7ecd1a4ef557

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add content
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 21 Mar 2019 19:15:52 -0600
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children 18cf4872fd7f
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-1:000000000000 0:7ecd1a4ef557
1 package nabble.view.web.forum;
2
3 import fschmidt.util.servlet.CanonicalUrl;
4 import fschmidt.util.servlet.ServletUtils;
5 import nabble.model.ModelHome;
6 import nabble.model.Node;
7 import nabble.model.Person;
8 import nabble.model.Site;
9 import nabble.view.lib.Jtp;
10 import nabble.view.lib.TopicView;
11 import nabble.view.lib.UrlMappable;
12
13 import javax.servlet.ServletException;
14 import javax.servlet.http.HttpServlet;
15 import javax.servlet.http.HttpServletRequest;
16 import javax.servlet.http.HttpServletResponse;
17 import java.io.IOException;
18 import java.util.HashMap;
19 import java.util.Map;
20 import java.util.regex.Matcher;
21 import java.util.regex.Pattern;
22
23
24 public class Permalink extends HttpServlet implements UrlMappable, CanonicalUrl {
25
26 public static String url(Node topic,Node post) {
27 if( topic==null )
28 topic = post.getTopic();
29 return topic.getSite().getBaseUrl() + path(topic,post);
30 }
31
32 public static String path(Node topic,Node post) {
33 if( topic==null )
34 topic = post.getTopic();
35 StringBuilder buf = new StringBuilder();
36 buf.append( '/' );
37 buf.append( Jtp.subjectEncode(topic.getSubject()) );
38 buf.append( "-tp" );
39 buf.append( topic.getId() );
40 if( post != null && post != topic ) {
41 buf.append("p");
42 buf.append(post.getId());
43 }
44 buf.append( ".html" );
45 return buf.toString();
46 }
47
48 private static final Pattern URL_PATTERN = Pattern.compile("/([^/]*)-tp(\\d+)(p(\\d+))?(ef(\\d+))?\\.html$");
49
50 public String getCanonicalUrl(HttpServletRequest request) {
51 Site site = Jtp.getSite(request);
52 if( site == null )
53 return null;
54 Node topic = site.getNode( Long.parseLong( request.getParameter("root") ) );
55 String postS = request.getParameter("post");
56 Node post = postS==null ? null : site.getNode( Long.parseLong(postS) );
57 return url(topic,post);
58 }
59
60 public Map<String,String[]> getParameterMapFromUrl(HttpServletRequest request,String mappedUrl) {
61 Matcher m = URL_PATTERN.matcher(mappedUrl);
62 if( !m.find() )
63 throw new RuntimeException();
64 Map<String,String[]> params = new HashMap<String,String[]>();
65 String subject = m.group(1);
66 params.put("subject",new String[]{subject});
67 String rootId = m.group(2);
68 params.put("root",new String[]{rootId});
69 String postId = m.group(4);
70 if( postId != null )
71 params.put( "post", new String[]{postId} );
72 return params;
73 }
74
75 public Pattern getUrlPattern() {
76 return URL_PATTERN;
77 }
78
79 protected void service(HttpServletRequest request, HttpServletResponse response)
80 throws ServletException, IOException
81 {
82 String type = ServletUtils.getCookieValue(request,"tview");
83 TopicView topicView = "threaded".equals(type)? TopicView.THREADED
84 : "list".equals(type)? TopicView.LIST : TopicView.CLASSIC;
85
86 long rootId = Long.parseLong( request.getParameter("root") );
87 Site site = Jtp.getSite(request);
88 if (site == null) {
89 response.sendError(HttpServletResponse.SC_NOT_FOUND, "Page Not Found");
90 return;
91 }
92 Node root = site.getNode(rootId);
93 if (root == null) {
94 response.sendError(HttpServletResponse.SC_NOT_FOUND, "Node Not Found");
95 return;
96 }
97 Person visitor = Jtp.getVisitor(request, response);
98
99 String postIdS = request.getParameter("post");
100 Node post = postIdS == null? root : site.getNode(Long.parseLong(postIdS));
101 if (Jtp.canBeViewedBy(root, visitor))
102 sendToTopicPage(root, post, topicView, response);
103 else if (post.getOwner().equals(visitor))
104 response.sendRedirect("/template/NamlServlet.jtp?macro=print_post&node="+post.getId());
105 else
106 sendToTopicPage(root, post, topicView, response);
107 }
108
109 private void sendToTopicPage(Node root, Node post, TopicView topicView, HttpServletResponse response) throws IOException {
110 response.setHeader("Location", Jtp.topicViewPath(root, post.getId(), topicView));
111 response.sendError(HttpServletResponse.SC_MOVED_PERMANENTLY);
112 }
113
114 public static Node getPostFromUrl(String url) {
115 Site site = Jtp.getSiteFromUrl(url);
116 if( site == null )
117 return null;
118 Matcher m = URL_PATTERN.matcher(url);
119 if( !m.find() )
120 return null;
121 String post = m.group(4) == null? m.group(2) : m.group(4);
122 return site.getNode(Long.parseLong(post));
123 }
124
125 }