Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/auth/plain/Authenticator.java @ 5861:172338b1407f

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GWT client: Added copyright header.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 28 Apr 2013 14:30:15 +0200
parents 5aa05a7a34b7
children 1b939742629e
rev   line source
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.client.server.auth.plain;
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10
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11 import org.dive4elements.river.client.server.auth.AuthenticationException;
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12 import org.dive4elements.river.client.server.auth.DefaultUser;
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13 import org.dive4elements.river.client.server.auth.User;
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14
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15 import java.io.BufferedReader;
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16 import java.io.File;
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17 import java.io.FileReader;
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18 import java.io.IOException;
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19
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20 import java.util.ArrayList;
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21 import java.util.List;
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22
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23 import org.apache.log4j.Logger;
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24
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25 import org.dive4elements.river.client.server.features.Features;
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26
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27 /**
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28 * Authenticator that uses a local file as user backend.
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29 */
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30 public class Authenticator
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31 implements org.dive4elements.river.client.server.auth.Authenticator
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32 {
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33 private static final Logger log =
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34 Logger.getLogger(Authenticator.class);
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35
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36 public static class Authentication
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37 implements org.dive4elements.river.client.server.auth.Authentication
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38 {
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39 protected String user;
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40 protected String password;
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41 protected List<String> roles;
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42 protected Features features;
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43
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44 public Authentication(
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45 String user,
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46 String password,
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47 List<String> roles,
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48 Features features
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49 ) {
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50 this.user = user;
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51 this.password = password;
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52 this.roles = roles;
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53 this.features = features;
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54 }
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55
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56 @Override
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57 public boolean isSuccess() {
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58 return user != null;
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59 }
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60
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61 @Override
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62 public User getUser() {
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63 return isSuccess()
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64 ? new DefaultUser(user, password, false, roles, this.features.getFeatures(roles))
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65 : null;
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66 }
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67 } // class Authentication
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68
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69 public Authenticator() {
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70 }
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71
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72 private static File credentialsFile() {
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73 String env = System.getenv("FLYS_USER_FILE");
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74 if (env == null) {
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75 env = System.getProperty(
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76 "flys.user.file",
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77 System.getProperty("user.home", ".")
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78 + System.getProperty("file.separator")
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79 + "flys_user_file");
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80 }
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81 log.debug("Using credentials file " + env);
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82 return new File(env);
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83
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84 }
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86 @Override
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87 public org.dive4elements.river.client.server.auth.Authentication auth(
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88 String username,
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89 String password,
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90 String encoding,
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91 Features features
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92 )
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93 throws AuthenticationException, IOException
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94 {
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95 File file = credentialsFile();
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96 if (!file.canRead() || !file.isFile()) {
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97 log.error("cannot find user file '" + file + "'");
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98 return new Authentication(null, null, new ArrayList<String>(0), features);
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99 }
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100
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101 BufferedReader reader =
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102 new BufferedReader(
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103 new FileReader(file));
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104 try {
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105 String line;
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106 while ((line = reader.readLine()) != null) {
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107 if ((line = line.trim()).length() == 0
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108 || line.startsWith("#")) {
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109 continue;
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110 }
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111
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112 String[] parts = line.split("\\s+");
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113 if (parts.length < 2) {
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114 continue;
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115 }
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116
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117 if (parts[0].equals(username)) {
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118 log.debug("user '" + username + "' found.");
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119 if (parts[1].equals(password)) {
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120 List<String> roles =
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121 new ArrayList<String>(parts.length - 2);
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122
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123 for (int i = 2; i < parts.length; i++) {
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124 roles.add(parts[i]);
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125 }
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126
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127 log.debug("success");
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128 return new Authentication(username, password, roles, features);
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129 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
130 // Stop: user found, wrong password
5ba0a6efdf3b Auth: added simple file based authentication.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
131 break;
5ba0a6efdf3b Auth: added simple file based authentication.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
132 }
5ba0a6efdf3b Auth: added simple file based authentication.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
133 }
5ba0a6efdf3b Auth: added simple file based authentication.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
134 }
5ba0a6efdf3b Auth: added simple file based authentication.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
135 finally {
5ba0a6efdf3b Auth: added simple file based authentication.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
136 reader.close();
5ba0a6efdf3b Auth: added simple file based authentication.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
137 }
2985
1f64ee424f92 Corrected broken web.xml
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2980
diff changeset
138 log.debug("failed");
3696
a050cb5f303f Cosmetics
Christian Lins <christian.lins@intevation.de>
parents: 3545
diff changeset
139 return null;
2959
5ba0a6efdf3b Auth: added simple file based authentication.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
140 }
5ba0a6efdf3b Auth: added simple file based authentication.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
141 }
5ba0a6efdf3b Auth: added simple file based authentication.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
142 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org