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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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23 import javax.servlet.http.HttpServletRequest;
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24 import java.util.*;
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25
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26 import digilib.*;
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73
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27 import digilib.servlet.DigilibRequest;
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1
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28
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73
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29 /** Basic implementation of AuthOps interface.
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30 *
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31 * Provides basic implementations. Only rolesForPath needs to be implemented
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32 * by specific implementations.
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33 */
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34 public abstract class AuthOpsImpl implements AuthOps {
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35
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73
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36 /** Local utils object. */
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37 protected Utils util;
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38
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39 /** Default constructor. */
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40 public AuthOpsImpl() {
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41 util = new Utils();
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42 try {
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43 init();
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44 } catch (AuthOpException e) {
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45 }
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46 }
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47
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73
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48 /** Constructor taking an utils object.
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49 * @param u utils object.
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50 */
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51 public AuthOpsImpl(Utils u) {
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52 util = u;
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53 try {
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54 init();
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55 } catch (AuthOpException e) {
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56 }
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57 }
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58
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73
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59 /** Test if the request is allowed to access filepath.
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60 * @param filepath filepath to be acessed.
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61 * @param request Request with user information.
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62 * @throws AuthOpException Exception thrown on error.
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63 * @return true if the request is allowed.
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64 */
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65 public boolean isAuthRequired(String filepath, HttpServletRequest request) throws AuthOpException {
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66 // check permissions
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67 List rolesRequired = rolesForPath(filepath, request);
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68 return (rolesRequired != null);
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69 }
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70
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73
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71 /**
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72 * @see digilib.auth.AuthOps#isAuthRequired(digilib.servlet.DigilibRequest)
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73 */
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74 public boolean isAuthRequired(DigilibRequest request)
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75 throws AuthOpException {
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76 // check permissions
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77 List rolesRequired = rolesForPath(request);
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78 return (rolesRequired != null);
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79 }
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80
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81 /** Return authorization roles needed for request.
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82 *
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83 * Returns a list of authorization roles that would be allowed to access the
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84 * specified path. The location information of the request is considered also.
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85 * @param filepath filepath to be accessed.
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86 * @param request ServletRequest with address information.
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87 * @throws AuthOpException Exception thrown on error.
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88 * @return List of Strings with role names.
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89 */
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90 public boolean isAuthorized(String filepath, HttpServletRequest request) throws AuthOpException {
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91 List rolesAllowed = rolesForPath(filepath, request);
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92 return isRoleAuthorized(rolesAllowed, request);
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93 }
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94
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73
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95 /**
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96 * @see digilib.auth.AuthOps#isAuthorized(digilib.servlet.DigilibRequest)
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97 */
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98 public boolean isAuthorized(DigilibRequest request)
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99 throws AuthOpException {
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100 List rolesAllowed = rolesForPath(request);
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101 return isRoleAuthorized(rolesAllowed, request);
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102 }
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103
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104 /** Test request authorization against a list of roles.
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105 * @param roles List of Strings with role names.
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106 * @param request ServletRequest with address information.
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107 * @return true if the user information in the request authorizes one of the roles.
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108 */
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109 public boolean isRoleAuthorized(List roles, HttpServletRequest request) {
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110 ListIterator r = roles.listIterator();
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111 String s = "";
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112 while (r.hasNext()) {
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113 s = (String)r.next();
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114 util.dprintln(5, "Testing role: "+s);
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115 if (request.isUserInRole(s)) {
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116 util.dprintln(5, "Role Authorized");
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117 return true;
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118 }
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119 }
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120 return false;
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121 }
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122
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123 /**
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124 * @see digilib.auth.AuthOps#isRoleAuthorized(java.util.List, digilib.servlet.DigilibRequest)
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125 */
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126 public boolean isRoleAuthorized(List roles, DigilibRequest request) {
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127 ListIterator r = roles.listIterator();
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128 String s = "";
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129 while (r.hasNext()) {
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130 s = (String)r.next();
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131 util.dprintln(5, "Testing role: "+s);
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132 if (((HttpServletRequest)request.getServletRequest()).isUserInRole(s)) {
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133 util.dprintln(5, "Role Authorized");
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134 return true;
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135 }
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136 }
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137 return false;
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138 }
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139
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140 public abstract void init() throws AuthOpException;
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141
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142 public abstract List rolesForPath(String filepath, HttpServletRequest request) throws AuthOpException;
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143
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73
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144 public abstract List rolesForPath(DigilibRequest request) throws AuthOpException;
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145
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146 }
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