1 | /**
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2 | *#########################################################################
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3 | *
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4 | * A component of the Gatherer application, part of the Greenstone digital
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5 | * library suite from the New Zealand Digital Library Project at the
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6 | * University of Waikato, New Zealand.
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7 | *
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8 | * <BR><BR>
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9 | *
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10 | * Author: John Thompson, Greenstone Digital Library, University of Waikato
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11 | *
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12 | * <BR><BR>
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13 | *
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14 | * Copyright (C) 1999 New Zealand Digital Library Project
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15 | *
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16 | * <BR><BR>
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17 | *
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18 | * This program is free software; you can redistribute it and/or modify
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19 | * it under the terms of the GNU General Public License as published by
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20 | * the Free Software Foundation; either version 2 of the License, or
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21 | * (at your option) any later version.
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22 | *
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23 | * <BR><BR>
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24 | *
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25 | * This program is distributed in the hope that it will be useful,
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26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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28 | * GNU General Public License for more details.
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29 | *
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30 | * <BR><BR>
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31 | *
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32 | * You should have received a copy of the GNU General Public License
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33 | * along with this program; if not, write to the Free Software
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34 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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35 | *########################################################################
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36 | */
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37 | package org.greenstone.gatherer.greenstone3;
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38 |
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39 | import java.awt.*;
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40 | import java.io.*;
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41 | import java.lang.ref.*;
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42 | import java.net.*;
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43 | import java.util.*;
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44 | import javax.swing.*;
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45 | import javax.swing.plaf.*;
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46 | import org.greenstone.gatherer.Gatherer;
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47 | import org.greenstone.gatherer.DebugStream;
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48 | import org.greenstone.gatherer.util.ArrayTools;
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49 | import org.greenstone.gatherer.util.StaticStrings;
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50 | import org.greenstone.gatherer.util.Utility;
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51 | import org.greenstone.gatherer.util.XMLTools;
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52 | import org.greenstone.gatherer.remote.RemoteGreenstoneServer;
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53 | import org.w3c.dom.*;
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54 |
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55 | /** This class stores the mapping between sites and servlets available for them. The info is read in from the web.xml file.
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56 | * @author Katherine Don, New Zealand Digital Library, University of Waikato
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57 | * @version
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58 | */
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59 | public class ServletConfiguration {
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60 |
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61 | static public String ADD_COMMAND = "?a=s&sa=a&st=collection&sn=";
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62 | static public String DEACTIVATE_COMMAND = "?a=s&sa=d&st=collection&sn=";
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63 | private String gsdl3_path = "";
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64 | private ArrayList sites = null;
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65 | private HashMap mappings = null;
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66 |
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67 | public ServletConfiguration(String gsdl3_path) {
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68 |
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69 | this.gsdl3_path = gsdl3_path;
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70 |
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71 | if (Gatherer.isGsdlRemote){
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72 | if (Gatherer.remoteGreenstoneServer.downloadWebXMLFile().equals("")) {
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73 | System.err.println("Error: Could not download web.xml.");
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74 | System.exit(0);
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75 | }
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76 | }
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77 | //String web_xml_path = gsdl3_path + File.separator + "web" + File.separator + "WEB-INF"+ File.separator + "web.xml";
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78 | File web_xml;
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79 | if (Gatherer.isGsdlRemote){
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80 | web_xml = new File(gsdl3_path + "web.xml");
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81 | }else{
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82 | web_xml = new File(gsdl3_path + "WEB-INF"+ File.separator + "web.xml");
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83 | }
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84 | if (!web_xml.exists()) {
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85 | DebugStream.println("Error: no web.xml found at "+web_xml.toString());
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86 | return;
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87 | }
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88 |
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89 | this.sites = new ArrayList();
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90 | if (Gatherer.isGsdlRemote){
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91 | String sites_on_server = Gatherer.remoteGreenstoneServer.getSiteNames();
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92 | if (sites_on_server.equals("")) {
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93 | // !! Something went wrong : could not get names of the sites
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94 | System.err.println("Error: Could not get names of the sites.");
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95 | System.exit(0);
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96 | }
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97 |
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98 | String[] sites_arr=sites_on_server.split("-----");
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99 | for (int i=0; i<sites_arr.length; i++){
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100 | if (!(sites_arr[i].trim().equals(""))){
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101 | this.sites.add(sites_arr[i].trim());
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102 | }
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103 | }
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104 | }else{
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105 | // find the sites
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106 | File start = new File(Utility.getSitesDir(gsdl3_path));
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107 | File possible_sites[] = start.listFiles();
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108 | ArrayTools.sort(possible_sites);
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109 | for (int i=0; possible_sites != null && i < possible_sites.length; i++) {
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110 | File site_config = new File(possible_sites[i], "siteConfig.xml");
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111 | if (site_config.exists()) {
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112 | this.sites.add(possible_sites[i].getName());
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113 | }
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114 | }
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115 | }
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116 |
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117 | this.mappings = new HashMap();
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118 | Document web_config = XMLTools.parseXMLFile(web_xml.getAbsolutePath(), false);
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119 |
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120 | NodeList servlet_mappings = web_config.getElementsByTagName("servlet-mapping");
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121 | // make a little map class
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122 | HashMap url_mappings = new HashMap();
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123 | for (int i=0; i<servlet_mappings.getLength(); i++) {
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124 | Element map = (Element)servlet_mappings.item(i);
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125 | String name = XMLTools.getValue(XMLTools.getNodeFromNamed(map, "servlet-name"));
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126 | String pattern = XMLTools.getValue(XMLTools.getNodeFromNamed(map, "url-pattern"));
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127 | url_mappings.put(name, pattern);
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128 |
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129 | }
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130 |
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131 | NodeList servlets = web_config.getElementsByTagName("servlet");
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132 | for (int i=0; i<servlets.getLength(); i++) {
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133 | Element servlet = (Element)servlets.item(i);
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134 | String name = XMLTools.getValue(XMLTools.getNodeFromNamed(servlet, "servlet-name"));
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135 | String description = XMLTools.getValue(XMLTools.getNodeFromNamed(servlet, "description"));
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136 | String site = getServletSite(servlet);
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137 |
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138 | if (site != null) {
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139 | ArrayList this_site = (ArrayList)mappings.get(site);
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140 | if (this_site == null) {
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141 | this_site = new ArrayList();
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142 | }
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143 | String url = (String)url_mappings.get(name);
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144 | this_site.add(url);
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145 | mappings.put(site, this_site);
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146 | }
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147 |
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148 | }
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149 |
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150 | web_config = null;
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151 | url_mappings = null;
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152 | }
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153 |
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154 | public ArrayList getSites() {
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155 | return this.sites;
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156 | }
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157 |
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158 | public ArrayList getServletsForSite(String site) {
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159 | return (ArrayList)this.mappings.get(site);
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160 | }
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161 | public String getServletPath(String site) {
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162 |
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163 | // for now, get the first one
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164 | ArrayList servlets = (ArrayList)mappings.get(site);
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165 | if(servlets == null) {
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166 | return null;
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167 | }
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168 | return (String)servlets.get(0);
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169 | }
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170 |
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171 | private String getServletSite(Element servlet) {
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172 |
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173 | NodeList params = servlet.getElementsByTagName("init-param");
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174 | if ( params == null || params.getLength() == 0) {
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175 | return null;
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176 | }
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177 | String site = null;
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178 | for (int i=0; i<params.getLength()&& site == null; i++) {
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179 | String p_name = XMLTools.getValue(XMLTools.getNodeFromNamed(params.item(i), "param-name"));
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180 | if (p_name.equals("site_name")) {
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181 | site = XMLTools.getValue(XMLTools.getNodeFromNamed(params.item(i), "param-value"));
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182 | }
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183 | }
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184 | return site;
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185 | }
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186 | }
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