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comparison src/nabble/view/web/tools/SpamRules.jtp @ 0:7ecd1a4ef557

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author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 21 Mar 2019 19:15:52 -0600
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1 <%
2 package nabble.view.web.tools;
3
4 import nabble.model.DailyNumber;
5 import nabble.model.ModelException;
6 import nabble.model.Person;
7 import nabble.model.SystemProperties;
8 import nabble.model.User;
9 import nabble.view.lib.Jtp;
10 import nabble.view.lib.Shared;
11 import org.slf4j.Logger;
12 import org.slf4j.LoggerFactory;
13
14 import javax.servlet.ServletException;
15 import javax.servlet.http.HttpServlet;
16 import javax.servlet.http.HttpServletRequest;
17 import javax.servlet.http.HttpServletResponse;
18 import java.io.IOException;
19 import java.io.PrintWriter;
20 import java.util.ArrayList;
21 import java.util.List;
22 import java.util.regex.Pattern;
23
24
25 public final class SpamRules extends HttpServlet {
26
27 private static final Logger logger = LoggerFactory.getLogger(SpamRules.class);
28
29 private static final List<Rule> RULES = new ArrayList<Rule>();
30
31 static {
32 String spamRules = SystemProperties.get("spam.rules");
33 if (spamRules != null)
34 RULES.addAll(parseRules(spamRules));
35 }
36
37 private interface Rule {
38 public String checkSubject(String subject) throws ModelException.SpamException;
39 public String checkMessage(String message, Person visitor) throws ModelException.SpamException;
40 }
41 /*
42 public static void checkSubject(HttpServletRequest request, String subject)
43 throws ModelException.SpamException
44 {
45 if (subject == null)
46 return;
47
48 // Removes duplicated space chars
49 subject = subject.replaceAll("[ ]+"," ");
50 for (Rule rule : RULES) {
51 try {
52 rule.checkSubject(subject);
53 } catch (ModelException.SpamException e) {
54 DailyNumber.blockedSpams.inc();
55 if (request != null)
56 logger.info("host="+request.getServerName()+" | IP=" + Jtp.getClientIpAddr(request) + " | " + e.getMessage());
57 else
58 logger.info("Blocked Mail | " + e.getMessage());
59 throw e;
60 }
61 }
62 }
63
64 public static void checkMessage(HttpServletRequest request, String message, Person visitor)
65 throws ModelException.SpamException
66 {
67 if (message == null)
68 return;
69
70 // Removes duplicated space chars
71 message = message.replaceAll("[ ]+"," ");
72 for (Rule rule : RULES) {
73 try {
74 rule.checkMessage(message, visitor);
75 } catch (ModelException.SpamException e) {
76 DailyNumber.blockedSpams.inc();
77 String email = visitor instanceof User? ((User) visitor).getEmail() : "NO EMAIL";
78 if (request != null)
79 logger.info("host="+request.getServerName()+" | IP=" + Jtp.getClientIpAddr(request) + " | " + email + " | " + e.getMessage());
80 else
81 logger.info("Blocked Mail | " + email + " | " + e.getMessage());
82 throw e;
83 }
84 }
85 }
86 */
87 protected void service(HttpServletRequest request,HttpServletResponse response)
88 throws ServletException, IOException
89 {
90 String spamRules = SystemProperties.get("spam.rules");
91
92 if ("save".equals(request.getParameter("action"))) {
93 String rules = request.getParameter("rules");
94 RULES.clear();
95 if (rules != null && rules.length() > 0) {
96 List<Rule> r = parseRules(rules);
97 if (r.size() > 0)
98 RULES.addAll(r);
99 }
100 SystemProperties.set("spam.rules", rules);
101 response.sendRedirect("/tools/");
102 return;
103 }
104
105 PrintWriter out = response.getWriter();
106 %>
107 <html>
108 <head>
109 <script src="<%=Shared.getJQueryPath()%>"></script>
110 <link rel="stylesheet" href="<%=Shared.getCssPath()%>" type="text/css" />
111 </head>
112 <body>
113 <div>
114 <a href="/tools/">Tools</a>
115 </div>
116 <h1>Spam Rules</h1>
117 <div id="nabble" class="nabble">
118 <form action="/tools/SpamRules.jtp" method="POST">
119 <input type="hidden" name="action" value="save">
120 <textarea name="rules" rows=15 style="width:80%"><%=Jtp.hideNull(spamRules)%></textarea>
121 <br>
122 <input type="submit" value="Save Rules">
123 </form>
124 </div>
125 </body>
126 </html>
127 <%
128 }
129
130 private static synchronized List<Rule> parseRules(String rules) {
131 List<Rule> r = new ArrayList<Rule>();
132 String[] lines = rules.split("\n");
133 for (String line : lines) {
134 if (line.length() == 0 || line.startsWith("#")) {
135 // do nothing
136 } else if (line.startsWith("subject-contains:"))
137 r.add(new SubjectContainsRule(line.substring("subject-contains:".length()).trim()));
138 else if (line.startsWith("message-contains:"))
139 r.add(new MessageContainsRule(line.substring("message-contains:".length()).trim()));
140 else if (line.startsWith("message-contains-pattern:"))
141 r.add(new MessageContainsPattern(line.substring("message-contains-pattern:".length()).trim()));
142 else if (line.startsWith("message-word-count:"))
143 r.add(new WordCountRule(line.substring("message-word-count:".length()).trim()));
144 else if (line.startsWith("subject-max-words:"))
145 r.add(new SubjectMaxWordsRule(line.substring("subject-max-words:".length()).trim()));
146 else if (line.startsWith("message-max-words:"))
147 r.add(new MessageMaxWordsRule(line.substring("message-max-words:".length()).trim()));
148 else if (line.startsWith("user-email-pattern:"))
149 r.add(new UserEmailPattern(line.substring("user-email-pattern:".length()).trim()));
150 }
151 return r;
152 }
153
154 private static class SubjectContainsRule implements Rule {
155 private String text;
156 private String[] parts;
157 public SubjectContainsRule(String text) {
158 this.text = text;
159 this.parts = text.toLowerCase().split("\\+");
160 }
161 public String checkSubject(String subject)
162 throws ModelException.SpamException
163 {
164 if (subject == null) return null;
165 subject = subject.toLowerCase();
166 for (String part : parts) {
167 if (subject.indexOf(part) == -1)
168 return null;
169 }
170 throw new ModelException.SubjectContainsInvalidWord(text);
171 }
172 public String checkMessage(String message, Person visitor) { return null; }
173 }
174
175 private static class SubjectMaxWordsRule implements Rule {
176 private int max;
177 private String[] parts;
178 public SubjectMaxWordsRule(String text) {
179 String[] params = text.split("\\|");
180 this.max = Integer.valueOf(params[0]);
181 this.parts = params[1].toLowerCase().split("\\+");
182 }
183 public String checkSubject(String subject)
184 throws ModelException.SpamException
185 {
186 if (subject == null) return null;
187 subject = subject.toLowerCase();
188 int count = 0;
189 for (String part : parts) {
190 if (subject.indexOf(part) >= 0)
191 count++;
192 if (count >= max)
193 throw new ModelException.SubjectContainsCommonSpamWords(subject);
194 }
195 return null;
196 }
197 public String checkMessage(String message, Person visitor) { return null; }
198 }
199
200 private static class MessageMaxWordsRule implements Rule {
201 private int max;
202 private String[] parts;
203 public MessageMaxWordsRule(String text) {
204 String[] params = text.split("\\|");
205 this.max = Integer.valueOf(params[0]);
206 this.parts = params[1].toLowerCase().split("\\+");
207 }
208 public String checkMessage(String message, Person visitor)
209 throws ModelException.SpamException
210 {
211 if (message == null) return null;
212 message = message.toLowerCase();
213 int count = 0;
214 for (String part : parts) {
215 if (message.indexOf(part) >= 0)
216 count++;
217 if (count >= max)
218 throw new ModelException.MessageContainsCommonSpamWords(message);
219 }
220 return null;
221 }
222 public String checkSubject(String subject) { return null; }
223 }
224
225 private static class MessageContainsRule implements Rule {
226 private String text;
227 private String[] parts;
228 public MessageContainsRule(String text) {
229 this.text = text;
230 this.parts = text.toLowerCase().split("\\+");
231 }
232 public String checkMessage(String message, Person visitor)
233 throws ModelException.SpamException
234 {
235 if (message == null) return null;
236 String msg = message.toLowerCase();
237 for (String part : parts) {
238 if (msg.indexOf(part) == -1)
239 return null;
240 }
241 throw new ModelException.MessageContainsInvalidWord(text);
242 }
243 public String checkSubject(String subject) { return null; }
244 }
245
246 private static class MessageContainsPattern implements Rule {
247 private Pattern[] pattern;
248 public MessageContainsPattern(String patternList) {
249 String[] patterns = patternList.split("____");
250 this.pattern = new Pattern[patterns.length];
251 for (int i = 0; i < patterns.length; i++)
252 this.pattern[i] = Pattern.compile(patterns[i]);
253 }
254 public String checkMessage(String message, Person visitor)
255 throws ModelException.SpamException
256 {
257 if (message == null) return null;
258 for (Pattern p : pattern) {
259 if (!p.matcher(message).find())
260 return null;
261 }
262 throw new ModelException.MessageContainsCommonSpamWords(message);
263 }
264 public String checkSubject(String subject) { return null; }
265 }
266
267 private static class UserEmailPattern implements Rule {
268 private Pattern pattern;
269 public UserEmailPattern(String pattern) {
270 this.pattern = Pattern.compile(pattern);
271 }
272 public String checkMessage(String message, Person visitor)
273 throws ModelException.SpamException
274 {
275 if (visitor instanceof User) {
276 String email = ((User) visitor).getEmail();
277 if (!pattern.matcher(email).matches())
278 return null;
279 throw new ModelException.MessageContainsInvalidWord("EMAIL: " + email);
280 }
281 return null;
282 }
283 public String checkSubject(String subject) { return null; }
284 }
285
286 private static class WordCountRule implements Rule {
287 private String text;
288 private int count;
289 public WordCountRule(String value) {
290 String[] values = value.split(">");
291 this.text = values[0].toLowerCase();
292 this.count = Integer.valueOf(values[1]);
293 }
294 public String checkMessage(String message, Person visitor)
295 throws ModelException.SpamException
296 {
297 if (message == null) return null;
298 String msg = message.toLowerCase();
299 int oldPos = 0;
300 int newPos = msg.indexOf(text);
301 int c = 0;
302 while (newPos > oldPos) {
303 c++;
304 if (c >= count)
305 throw new ModelException.MessageContainsManyInvalidWords(text);
306 oldPos = newPos;
307 newPos = msg.indexOf(text, oldPos+text.length());
308 }
309 return null;
310 }
311 public String checkSubject(String subject) { return null; }
312 }
313 }
314 %>