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annotate flys-client/src/main/java/de/intevation/flys/client/server/auth/plain/Authenticator.java @ 2959:5ba0a6efdf3b

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Auth: added simple file based authentication. flys-client/trunk@4939 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 11 Jul 2012 14:53:33 +0000
parents
children 98514ab2c9ba
rev   line source
2959
5ba0a6efdf3b Auth: added simple file based authentication.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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1 package de.intevation.flys.client.server.auth.plain;
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2
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3 import de.intevation.flys.client.server.auth.AuthenticationException;
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4 import de.intevation.flys.client.server.auth.DefaultUser;
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5 import de.intevation.flys.client.server.auth.User;
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6
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7 import java.io.BufferedReader;
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8 import java.io.File;
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9 import java.io.FileReader;
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10 import java.io.IOException;
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11
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12 public class Authenticator
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13 implements de.intevation.flys.client.server.auth.Authenticator
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14 {
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15 public static class Authentication
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16 implements de.intevation.flys.client.server.auth.Authentication
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17 {
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18 protected String user;
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19 protected String password;
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20
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21 public Authentication(String user, String password) {
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22 this.user = user;
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23 this.password = password;
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24 }
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25
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26 @Override
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27 public boolean isSuccess() {
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28 return user != null;
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29 }
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30
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31 @Override
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32 public User getUser() {
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33 return isSuccess()
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34 ? new DefaultUser(user, password, false)
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35 : null;
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36 }
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37 } // class Authentication
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38
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39 public Authenticator() {
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40 }
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41
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42 private static File credentialsFile() {
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43 String env = System.getenv("FLYS_USER_FILE");
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44 if (env == null) {
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45 env = System.getProperty(
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46 "flys.user.file",
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47 System.getProperty("user.home", ".")
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48 + System.getProperty("file.separator")
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49 + "flys_user_file");
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50 }
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51 return new File(env);
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52
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53 }
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54
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55 @Override
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56 public de.intevation.flys.client.server.auth.Authentication auth(
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57 String username,
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58 String password,
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59 String encoding
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60 )
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61 throws AuthenticationException, IOException
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62 {
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63 File file = credentialsFile();
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64 if (!file.canRead() || !file.isFile()) {
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65 return new Authentication(null, null);
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66 }
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67
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68 BufferedReader reader =
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69 new BufferedReader(
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70 new FileReader(file));
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71 try {
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72 String line;
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73 while ((line = reader.readLine()) != null) {
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74 if ((line = line.trim()).length() == 0
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75 || line.startsWith("#")) {
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76 continue;
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77 }
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78 String [] parts = line.split("\\s+");
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79 // TODO: role?
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80 if (parts.length < 2) {
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81 continue;
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82 }
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83 if (parts[0].equals(username)) {
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84 if (parts[1].equals(password)) {
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85 return new Authentication(username, password);
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86 }
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87 // Stop: user found, wrong password
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88 break;
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89 }
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90 }
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91 }
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92 finally {
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93 reader.close();
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94 }
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95 return new Authentication(null, null);
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96 }
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97 }
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98 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org