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1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
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2 <html>
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3 <head>
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4 <title>Installation of digilib</title>
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5 </head>
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6
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7 <body>
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8 <h1>What you need to install digilib</h1>
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9
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10 <ul>
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11 <li>Java JDK >1.2 (preferred 1.3)</li>
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12 <li><a href="http://jakarta.apache.org/tomcat/index.html" >Jakarta
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13 tomcat</a> version 4.0.1 from
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14 <a href="http://jakarta.apache.org<" >http://jakarta.apache.org</a></li>
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15 <li>The digilib distribution packages (from
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16 <a href="http://developer.berlios.de" >http://developer.berlios.de</a>)
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17 <ul>
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18 <li>digilib scripts and servlets package
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19 <a href="http://download.berlios.de/digilib/digilib-core-1.0.zip"><code>digilib-core.zip</code></a></li>
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20 <li>digilib configuration files for tomcat 4 package
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21 <a href="http://download.berlios.de/digilib/digilib-tomconf-1.0.zip"><code>digilib-tomconf.zip</code></a></li>
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22 <li>digilib external libraries package <a href="http://download.berlios.de/digilib/digilib-ext-1.0.zip"><code>digilib-ext.zip</code></a>
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23 (Not essential. Contains documentation to JAI 1.1.1 and Xerces
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24 1.4.3)</li>
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25 </ul>
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26 </li>
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27 </ul>
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28
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29 <h1>Installation</h1>
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30
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31 <h2>On Linux</h2>
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32
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33 <ol>
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34 <li>Make shure Java JDK is installed</li>
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35 <li>Create a base directory for docuserver (the default used here is
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36 <code>/docuserver</code>) and for the web interface
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37 (<code>/docuserver/www</code>).</li>
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38 <li>Unpack the <code>digilib-core</code> package in the web
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39 interface directory (<code>/docuserver/www</code>). This will create
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40 the digilib directory <code>digitallibrary</code>.</li>
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41 <li>(optional) Unpack the <code>digilib-ext</code> package in the
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42 docuserver directory.</li>
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43 <li>Unpack Jakarta tomcat 4.0.1 in <code>/opt</code> This should
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44 produce a directory <code>/opt/jakarta-tomcat-4.0.1</code>. Create a
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45 link <code>/opt/tomcat</code> to the new directory.</li>
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46 <li>Unpack the configuration files package
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47 <code>digilib-tomconf</code> in the tomcat directory.</li>
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48 <li>Adjust hostname and HTML-base directory in the file
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49 <code>server.xml</code> (in the directory
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50 <code>/opt/tomcat/conf</code>, see below for details))</li>
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51 <li>Adjust the path to the JDK and its options in
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52 <code>catalina.sh</code> (in the directory
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53 <code>/opt/tomcat/bin</code>, see below for details)</li>
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54 <li>(optional) For SuSE Linux you can use the startup skript
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55 <code>tomcat/bin/rctomcat</code>
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56 to start and stop the tomcat server. Copy the script into
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57 <code>/etc/init.d</code> as <code>tomcat</code> and set runlevel
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58 links accordingly.</li>
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59 <li>(optional) Set the tomcat directory and all files to be owned by
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60 the user
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61 <code>wwwrun</code> (or whatever your webserver runs) and use this
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62 account to start the tomcat server.</li>
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63 </ol>
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64
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65
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66 <!--
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67 <h2>Apache connector module</h2>
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68
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69 <p>digilib currently needs to be accessed through the Apache
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70 webserver. There are two possible connectors for Apache and Tomcat4:
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71 <code>mod_webapp</code> and <code>mod_jk</code>. Only
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72 <code>mod_webapp</code> has been tested so far.</p>
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73
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74 <ol>
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75 <li>Get the sources for <code>mod_webapp</code></li>
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76 </ol>
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77 -->
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78
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79 <h1>Configuration</h1>
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80
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81 <h2>Tomcat</h2>
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82
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83 <h3>catalina.sh</h3>
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84
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85 <p>The file <code>catalina.sh</code> (in <code>/opt/tomcat/bin</code>
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86 has been modified to provide the path to the JDK and runtime options
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87 for the Java VM. Somewhere at the beginning of the file are two lines
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88 like this:</p>
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89
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90 <pre>
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91 export JAVA_HOME=/usr/local/lib/IBMJava2-13
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92 export CATALINA_OPTS="-mx512m"
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93 </pre>
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94
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95 <p>Adjust the <code>JAVA_HOME</code> path to point to your Java JDK
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96 installation directory. You can adjust the memory used by the Java VM
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97 with the <code>-mx512m</code> option.</p>
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98
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99 <p>You can delete those two lines if you set these variables in your
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100 shell before starting tomcat in that same shell. These lines are
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101 needed if you want to use the startup script for linux mentioned
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102 above.</p>
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103
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104
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105 <h3>server.xml</h3>
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106
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107 <p>The environment of the tomcat server is configured in the file
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108 <code>server.xml</code> in <code>/opt/tomcat/conf</code>. Extensive <a
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109 href="http://jakarta.apache.org/tomcat/tomcat-4.0-doc/index.html">documentation
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110 about all options</a> can by found on the webpages of the tomcat
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111 project.</p>
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112
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113 <p>A minimal configuration file for running digilib is provided in the
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114 <code>digilib-tomconf</code> package. For standard operation only a
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115 few adjustments have to be made. The configuration file should look
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116 like this:</p>
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117
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118 <pre>
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119 <!-- Digilib Server Configuration File -->
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120
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121 <Server port="8005" shutdown="SHUTDOWN" debug="0">
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122
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123 <!-- Define an Apache-Connector Service -->
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124 <Service name="Tomcat-Docuserver">
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125
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126 <!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
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127 <Connector className="org.apache.catalina.connector.http.HttpConnector"
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128 port=<b>"8080"</b> minProcessors="5" maxProcessors="75"
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129 acceptCount="10" debug="0" connectionTimeout="60000"/>
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130
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131 <!-- Replace "localhost" with what your Apache "ServerName" is set to -->
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132 <Engine className="org.apache.catalina.connector.warp.WarpEngine"
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133 name="Apache" debug="1" appBase="webapps" defaultHost=<b>"hera.unibe.ch"</b>>
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134
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135 <!-- Global logger unless overridden at lower levels -->
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136 <Logger className="org.apache.catalina.logger.FileLogger"
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137 prefix="apache_log." suffix=".txt"
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138 timestamp="true"/>
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139
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140 <!-- Define the default virtual host. Hostname must match the engine's. -->
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141 <Host name=<b>"hera.unibe.ch"</b> debug="0" appBase=<b>"/docuserver/www"</b>>
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142
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143 <Context path="/docuserver/digitallibrary" docBase=<b>"/docuserver/www/digitallibrary"</b> debug="0" reloadable="false">
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144 </Context>
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145
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146 </Host>
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147
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148 <!-- Because this Realm is here, an instance will be shared globally -->
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149 <Realm className="org.apache.catalina.realm.MemoryRealm" />
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150
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151 </Engine>
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152
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153 </Service>
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154
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155 </Server>
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156 </pre>
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157
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158 <p>You can change the portnumber of your server to be something other
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159 than <b>8080</b> in the <code>port</code> property. If you want to use the
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160 default webserver port 80 you have to run tomcat as the root user (it
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161 is less secure to do this!).</p>
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162
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163 <p>You have to change the occurences of <b>hera.unibe.ch</b> (in
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164 the <code>defaultHost</code> and <code>name</code> properties) to your
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165 hostname.</p>
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166
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167 <p>Then you can adjust the <b>/docuserver/www</b> path to the
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168 directory where you installed the <code>digilib-core</code>
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169 package. You should not change the <code>path</code> property but only
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170 the <code>appBase</code> and <code>docBase</code> properties!</p>
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171
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172
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173 <h3>tomcat-users.xml</h3>
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174
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175 <p>All passwords and usernames have to be set up in the file
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176 <code>tomcat-users.xml</code> in <code>/opt/tomcat/conf</code> if you
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177 want to use authentication in digilib. The file looks like this:</p>
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178
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179 <pre>
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180 <tomcat-users>
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181 <user name="tomcat" password="tomcat" roles="tomcat" />
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182 <user name="role1" password="tomcat" roles="role1" />
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183 <user name="both" password="tomcat" roles="tomcat,role1" />
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184 </tomcat-users>
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185 </pre>
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186
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187 <p>A user is identified by a <code>name</code> and
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188 <code>password</code>. These two elements have to be entered in a
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189 authentication form presented by the browser when accessing a
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190 restricted resource. A user can have one or more
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191 <code>roles</code>. These roles will be used by digilib to decide if
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192 an authenticated user is allowed to access a document (see
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193 <code>digilib-auth.xml</code> below).</p>
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194
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195 <p>tomcat has to be restarted before changes to
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196 <code>tomcat-users.xml</code> have effect!</p>
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197
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198 <h2>Digilib</h2>
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199
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200 <h3>web.xml</h3>
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201
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202 <p>The deployment of the digilib servlets and JSPs is defined in the
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203 file <code>web.xml</code> in the <code>WEB-INF</code> subdirectory of
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204 the digilib directory
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205 (<code>/docuserver/www/digitallibrary/WEB-INF</code>).</p>
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206
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207 <p>The only parameter you might have to adjust is the position of the
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208 digilib configuration file. The parameter occurs twice in the file and
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209 looks like this:</p>
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210
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211 <pre>
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212 <!-- parameters to the servlet -->
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213 <init-param>
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214 <param-name>config-file</param-name>
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215 <param-value>
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216 <b>/docuserver/www/digitallibrary/WEB-INF/digilib-config.xml</b>
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217 </param-value>
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218 </init-param>
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219 </pre>
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220
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221 <p>Change the path to where you installed the configuration files.</p>
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222
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223 <p>Make shure to change the parameter in both places! It is needed
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224 both for the servlet and the JSP pages!</p>
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225
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226 <h3>digilib-config.xml</h3>
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227
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228 <p>The main configuration for digilib is
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229 <code>digilib-config.xml</code>. It's position is defined by the
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230 <code>config-file</code> init-parameter to the servlets (see
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231 above).</p>
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232
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233 <p>In the configuration file you can set several paths and
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234 options. The file looks like this:</p>
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235
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236 <pre>
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237 <!-- Digilib servlet config file -->
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238
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239 <digilib-config>
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240 <parameter name="debug-level" value="0" />
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241
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242 <!-- Image to be sent to indicate general failure. -->
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243 <parameter name="error-image" value=<b>"/docuserver/images/icons/broken.gif"</b> />
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244
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245 <!-- Image to be sent to indicate authorization failure. -->
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246 <parameter name="denied-image" value=<b>"/docuserver/images/icons/alert.red.gif"</b> />
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247
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248 <!-- List of directories where images are searched.
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249 Directories with low-resolution images are first in list. -->
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250 <parameter name="basedir-list" value=<b>"/docuserver/scaled/small:/docuserver/images:/docuserver/scans/quellen"</b> />
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251
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252 <!-- Restrict access to authorized users.
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253 User authentication and roles are provided by the servlet container
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254 (see tomcat-users.xml).
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255 Authorization for resources (directories) is evaluated by the servlet
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256 (see auth-file). -->
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257 <parameter name="use-authorization" value="true" />
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258
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259 <!-- URL location of XML file with authorization requirements. -->
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260 <parameter name="auth-file" value=<b>"/docuserver/www/digitallibrary/WEB-INF/digilib-auth.xml"</b> />
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261
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262 <!-- Part of URL to indicate authenticated access to Tomcat. -->
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263 <parameter name="auth-url-path" value="authenticated/" />
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264 </digilib-config>
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265 </pre>
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266
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267 <p>You have to adjust the <code>basedir-list</code> parameter to the
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268 directories where your images are installed. You need only one
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269 directory if you do not have prescaled low resolution versions of your
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270 images.</p>
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271
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272 <p>You can supply your own images for the "error" and
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273 "access denied" messages by the servlet. Standard images
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274 will be used if these parameters are undefined.</p>
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275
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276 <p>The <code>auth-file</code> parameter has to point to the
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277 authorization configuration file (see below).</p>
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278
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279
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280 <h3>digilib-auth.xml</h3>
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281
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282 <p>The digilib access authorization is defined in the file defined by
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283 the <code>auth-file</code> parameter (usually
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284 <code>digilib-auth.xml</code> in <code>WEB-INF</code>). </p>
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285
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286 <p>The file has two parts <code>diglib-paths</code> and
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287 <code>diglib-addresses</code>. It looks like this:</p>
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288
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289 <pre>
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290 <auth-config>
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291
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292 <digilib-paths>
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293 <!--
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294 A user must supply one of the roles under "role"
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295 to access the directory "name".
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296 Roles under "role" must be separated by comma only (no spaces).
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297 -->
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298 <path name="histast/eastwood-collection" role="eastwood-coll" />
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299 <path name="ptolemaios_geo" role="ptolemaios-geo" />
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300 </digilib-paths>
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301
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302 <digilib-addresses>
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303 <!--
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304 A computer with an ip address that matches "ip"
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305 is automatically granted all roles under "role".
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306 The ip address is matched from the left (in full quads).
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307 Roles under "role" must be separated by comma only (no spaces).
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308 -->
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309 <address ip="127" role="local" />
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310 <address ip="130.92.68" role="eastwood-coll,ptolemaios-geo" />
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311 <address ip="130.92.151" role="ALL" />
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312 </digilib-addresses>
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313
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314 </auth-config>
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315 </pre>
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316
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317 <p><code>diglib-paths</code> defines restricted directories and
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318 the roles needed for access. The roles are defined with the users in
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319 <code>tomcat-users.xml</code> (see above). All subdirectories of the
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320 given directories have the same restrictions. All directories not
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321 listed here (and not subdirectories of listed directories) are freely
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322 accessible.</p>
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323
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324 <p><code>diglib-addresses</code> defines hosts or networks of
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325 computers that are automatically authenticated without username and
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326 password. Hosts can be assigned roles. The special keyword <code>ALL</code>
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327 authorizes for everything. If the role assigned to the computer is not
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328 sufficient to access a resource the user will be asked for username
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329 and password.</p>
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330
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331
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332
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333 <hr>
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334 <address>robert.casties@philo.unibe.ch</address>
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335 <!-- hhmts start --> Last modified: Thu Jan 17 19:12:01 CET 2002 <!-- hhmts end -->
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336 </body> </html>
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