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1 /* AuthOps -- Authentication class implementation
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2
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3 Digital Image Library servlet components
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4
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5 Copyright (C) 2001, 2002 Robert Casties (robcast@mail.berlios.de)
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6
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7 This program is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2 of the License, or (at your
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10 option) any later version.
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11
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12 Please read license.txt for the full details. A copy of the GPL
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13 may be found at http://www.gnu.org/copyleft/lgpl.html
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 */
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20
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21 package digilib.auth;
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22
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181
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23 import java.util.List;
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24
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25 import javax.servlet.http.HttpServletRequest;
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26
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181
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27 import org.apache.log4j.Logger;
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28
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73
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29 import digilib.servlet.DigilibRequest;
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1
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30
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73
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31 /** Basic implementation of AuthOps interface.
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32 *
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33 * Provides basic implementations. Only rolesForPath needs to be implemented
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34 * by specific implementations.
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35 */
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36 public abstract class AuthOpsImpl implements AuthOps {
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37
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181
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38 /** general logger for this class */
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39 protected Logger logger = Logger.getLogger(this.getClass());
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40
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73
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41 /** Default constructor. */
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42 public AuthOpsImpl() {
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43 try {
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44 init();
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45 } catch (AuthOpException e) {
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46 }
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47 }
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48
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49
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73
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50 /** Test if the request is allowed to access filepath.
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51 * @param filepath filepath to be acessed.
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52 * @param request Request with user information.
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53 * @throws AuthOpException Exception thrown on error.
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54 * @return true if the request is allowed.
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55 */
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56 public boolean isAuthRequired(String filepath, HttpServletRequest request) throws AuthOpException {
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57 // check permissions
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58 List<String> rolesRequired = rolesForPath(filepath, request);
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59 return (rolesRequired != null);
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60 }
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61
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73
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62 /**
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63 * @see digilib.auth.AuthOps#isAuthRequired(digilib.servlet.DigilibRequest)
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64 */
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65 public boolean isAuthRequired(DigilibRequest request)
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66 throws AuthOpException {
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67 // check permissions
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68 List<String> rolesRequired = rolesForPath(request);
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69 return (rolesRequired != null);
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70 }
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71
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72 /** Return authorization roles needed for request.
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73 *
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74 * Returns a list of authorization roles that would be allowed to access the
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75 * specified path. The location information of the request is considered also.
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76 * @param filepath filepath to be accessed.
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77 * @param request ServletRequest with address information.
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78 * @throws AuthOpException Exception thrown on error.
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79 * @return List of Strings with role names.
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80 */
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81 public boolean isAuthorized(String filepath, HttpServletRequest request) throws AuthOpException {
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82 List<String> rolesAllowed = rolesForPath(filepath, request);
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83 return isRoleAuthorized(rolesAllowed, request);
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84 }
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85
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73
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86 /**
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87 * @see digilib.auth.AuthOps#isAuthorized(digilib.servlet.DigilibRequest)
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88 */
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89 public boolean isAuthorized(DigilibRequest request)
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90 throws AuthOpException {
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91 List<String> rolesAllowed = rolesForPath(request);
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92 return isRoleAuthorized(rolesAllowed, request);
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93 }
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94
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95 /** Test request authorization against a list of roles.
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96 * @param roles List of Strings with role names.
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97 * @param request ServletRequest with address information.
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98 * @return true if the user information in the request authorizes one of the roles.
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99 */
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100 public boolean isRoleAuthorized(List<String> roles, HttpServletRequest request) {
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101 for (String s: roles) {
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102 logger.debug("Testing role: "+s);
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103 if (request.isUserInRole(s)) {
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104 logger.debug("Role Authorized");
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105 return true;
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106 }
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107 }
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108 return false;
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109 }
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110
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111 /**
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112 * @see digilib.auth.AuthOps#isRoleAuthorized(java.util.List, digilib.servlet.DigilibRequest)
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113 */
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114 public boolean isRoleAuthorized(List<String> roles, DigilibRequest request) {
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115 for (String s: roles) {
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181
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116 logger.debug("Testing role: "+s);
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117 if (((HttpServletRequest)request.getServletRequest()).isUserInRole(s)) {
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181
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118 logger.debug("Role Authorized");
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119 return true;
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120 }
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121 }
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122 return false;
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123 }
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124
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125 public abstract void init() throws AuthOpException;
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126
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127 public abstract List<String> rolesForPath(String filepath, HttpServletRequest request) throws AuthOpException;
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128
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129 public abstract List<String> rolesForPath(DigilibRequest request) throws AuthOpException;
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73
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130
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131 }
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