1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others
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2 | package org.openstreetmap.josm.plugins;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.io.File;
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7 | import java.io.FileInputStream;
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8 | import java.io.IOException;
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9 | import java.io.InputStream;
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10 | import java.net.MalformedURLException;
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11 | import java.net.URL;
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12 | import java.util.ArrayList;
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13 | import java.util.Collection;
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14 | import java.util.LinkedList;
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15 | import java.util.List;
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16 | import java.util.Map;
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17 | import java.util.TreeMap;
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18 | import java.util.jar.Attributes;
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19 | import java.util.jar.JarInputStream;
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20 | import java.util.jar.Manifest;
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21 |
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22 | import org.openstreetmap.josm.Main;
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23 | import org.openstreetmap.josm.actions.AboutAction;
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24 | import org.openstreetmap.josm.tools.LanguageInfo;
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25 |
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26 | /**
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27 | * Encapsulate general information about a plugin. This information is available
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28 | * without the need of loading any class from the plugin jar file.
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29 | *
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30 | * @author imi
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31 | */
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32 | public class PluginInformation {
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33 | public File file = null;
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34 | public String name = null;
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35 | public int mainversion = 0;
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36 | public String className = null;
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37 | public boolean oldmode = false;
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38 | public String requires = null;
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39 | public String link = null;
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40 | public String description = null;
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41 | public boolean early = false;
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42 | public String author = null;
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43 | public int stage = 50;
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44 | public String version = null;
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45 | public String downloadlink = null;
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46 | public List<URL> libraries = new LinkedList<URL>();
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47 |
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48 | public final Map<String, String> attr = new TreeMap<String, String>();
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49 |
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50 | /**
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51 | * Used in the Plugin constructor to make the information of the plugin
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52 | * that is currently initializing available.
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53 | *
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54 | * If you think this is hacky, you are probably right. But it is
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55 | * convinient anyway ;-)
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56 | */
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57 | static PluginInformation currentPluginInitialization = null;
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58 |
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59 | /**
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60 | * @param file the plugin jar file.
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61 | */
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62 | public PluginInformation(File file) {
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63 | this(file, file.getName().substring(0, file.getName().length()-4));
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64 | }
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65 |
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66 | public PluginInformation(File file, String name) {
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67 | this.name = name;
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68 | this.file = file;
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69 | try {
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70 | JarInputStream jar = new JarInputStream(new FileInputStream(file));
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71 | Manifest manifest = jar.getManifest();
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72 | if (manifest == null)
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73 | throw new IOException(file+" contains no manifest.");
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74 | scanManifest(manifest, false);
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75 | libraries.add(0, fileToURL(file));
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76 | jar.close();
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77 | } catch (IOException e) {
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78 | throw new PluginException(null, name, e);
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79 | }
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80 | }
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81 |
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82 | public PluginInformation(InputStream manifestStream, String name, String url) {
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83 | this.name = name;
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84 | try {
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85 | Manifest manifest = new Manifest();
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86 | manifest.read(manifestStream);
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87 | if(url != null) {
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88 | downloadlink = url;
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89 | }
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90 | scanManifest(manifest, url != null);
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91 | } catch (IOException e) {
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92 | throw new PluginException(null, name, e);
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93 | }
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94 | }
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95 |
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96 | private void scanManifest(Manifest manifest, boolean oldcheck)
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97 | {
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98 | String lang = LanguageInfo.getLanguageCodeManifest();
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99 | Attributes attr = manifest.getMainAttributes();
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100 | className = attr.getValue("Plugin-Class");
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101 | String s = attr.getValue(lang+"Plugin-Link");
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102 | if(s == null) {
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103 | s = attr.getValue("Plugin-Link");
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104 | }
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105 | link = s;
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106 | requires = attr.getValue("Plugin-Requires");
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107 | s = attr.getValue(lang+"Plugin-Description");
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108 | if(s == null)
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109 | {
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110 | s = attr.getValue("Plugin-Description");
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111 | if(s != null) {
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112 | s = tr(s);
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113 | }
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114 | }
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115 | description = s;
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116 | early = Boolean.parseBoolean(attr.getValue("Plugin-Early"));
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117 | String stageStr = attr.getValue("Plugin-Stage");
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118 | stage = stageStr == null ? 50 : Integer.parseInt(stageStr);
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119 | version = attr.getValue("Plugin-Version");
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120 | try { mainversion = Integer.parseInt(attr.getValue("Plugin-Mainversion")); }
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121 | catch(NumberFormatException e) {}
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122 | author = attr.getValue("Author");
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123 | if(oldcheck && mainversion > AboutAction.getVersionNumber())
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124 | {
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125 | int myv = AboutAction.getVersionNumber();
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126 | for(Map.Entry entry : attr.entrySet())
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127 | {
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128 | try {
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129 | String key = ((Attributes.Name)entry.getKey()).toString();
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130 | if(key.endsWith("_Plugin-Url"))
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131 | {
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132 | int mv = Integer.parseInt(key.substring(0,key.length()-11));
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133 | if(mv <= myv && (mv > mainversion || mainversion > myv))
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134 | {
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135 | String v = (String)entry.getValue();
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136 | int i = v.indexOf(";");
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137 | if(i > 0)
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138 | {
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139 | downloadlink = v.substring(i+1);
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140 | mainversion = mv;
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141 | version = v.substring(0,i);
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142 | oldmode = true;
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143 | }
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144 | }
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145 | }
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146 | }
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147 | catch(Exception e) { e.printStackTrace(); }
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148 | }
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149 | }
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150 |
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151 | String classPath = attr.getValue(Attributes.Name.CLASS_PATH);
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152 | if (classPath != null) {
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153 | for (String entry : classPath.split(" ")) {
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154 | File entryFile;
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155 | if (new File(entry).isAbsolute()) {
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156 | entryFile = new File(entry);
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157 | } else {
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158 | entryFile = new File(file.getParent(), entry);
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159 | }
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160 |
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161 | libraries.add(fileToURL(entryFile));
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162 | }
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163 | }
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164 | for (Object o : attr.keySet()) {
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165 | this.attr.put(o.toString(), attr.getValue(o.toString()));
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166 | }
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167 | }
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168 |
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169 | public String getLinkDescription()
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170 | {
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171 | String d = description == null ? tr("no description available") : description;
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172 | if(link != null) {
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173 | d += " <A HREF=\""+link+"\">"+tr("More details")+"</A>";
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174 | }
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175 | return d;
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176 | }
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177 |
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178 | /**
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179 | * Load and instantiate the plugin
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180 | */
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181 | public PluginProxy load(Class<?> klass) {
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182 | try {
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183 | currentPluginInitialization = this;
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184 | return new PluginProxy(klass.newInstance(), this);
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185 | } catch (Exception e) {
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186 | throw new PluginException(null, name, e);
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187 | }
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188 | }
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189 |
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190 | /**
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191 | * Load the class of the plugin
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192 | */
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193 | public Class<?> loadClass(ClassLoader classLoader) {
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194 | if (className == null)
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195 | return null;
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196 | try {
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197 | Class<?> realClass = Class.forName(className, true, classLoader);
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198 | return realClass;
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199 | } catch (Exception e) {
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200 | throw new PluginException(null, name, e);
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201 | }
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202 | }
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203 |
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204 | public static URL fileToURL(File f) {
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205 | try {
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206 | return f.toURI().toURL();
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207 | } catch (MalformedURLException ex) {
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208 | return null;
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209 | }
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210 | }
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211 |
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212 | /**
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213 | * Try to find a plugin after some criterias. Extract the plugin-information
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214 | * from the plugin and return it. The plugin is searched in the following way:
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215 | *
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216 | *<li>first look after an MANIFEST.MF in the package org.openstreetmap.josm.plugins.<plugin name>
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217 | * (After removing all fancy characters from the plugin name).
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218 | * If found, the plugin is loaded using the bootstrap classloader.
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219 | *<li>If not found, look for a jar file in the user specific plugin directory
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220 | * (~/.josm/plugins/<plugin name>.jar)
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221 | *<li>If not found and the environment variable JOSM_RESSOURCES + "/plugins/" exist, look there.
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222 | *<li>Try for the java property josm.ressources + "/plugins/" (set via java -Djosm.plugins.path=...)
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223 | *<li>If the environment variable ALLUSERSPROFILE and APPDATA exist, look in
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224 | * ALLUSERSPROFILE/<the last stuff from APPDATA>/JOSM/plugins.
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225 | * (*sic* There is no easy way under Windows to get the All User's application
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226 | * directory)
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227 | *<li>Finally, look in some typical unix paths:<ul>
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228 | * <li>/usr/local/share/josm/plugins/
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229 | * <li>/usr/local/lib/josm/plugins/
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230 | * <li>/usr/share/josm/plugins/
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231 | * <li>/usr/lib/josm/plugins/
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232 | *
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233 | * If a plugin class or jar file is found earlier in the list but seem not to
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234 | * be working, an PluginException is thrown rather than continuing the search.
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235 | * This is so JOSM can detect broken user-provided plugins and do not go silently
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236 | * ignore them.
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237 | *
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238 | * The plugin is not initialized. If the plugin is a .jar file, it is not loaded
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239 | * (only the manifest is extracted). In the classloader-case, the class is
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240 | * bootstraped (e.g. static {} - declarations will run. However, nothing else is done.
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241 | *
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242 | * @param pluginName The name of the plugin (in all lowercase). E.g. "lang-de"
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243 | * @return Information about the plugin or <code>null</code>, if the plugin
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244 | * was nowhere to be found.
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245 | * @throws PluginException In case of broken plugins.
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246 | */
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247 | public static PluginInformation findPlugin(String pluginName) throws PluginException {
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248 | String name = pluginName;
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249 | name = name.replaceAll("[-. ]", "");
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250 | InputStream manifestStream = PluginInformation.class.getResourceAsStream("/org/openstreetmap/josm/plugins/"+name+"/MANIFEST.MF");
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251 | if (manifestStream != null)
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252 | return new PluginInformation(manifestStream, pluginName, null);
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253 |
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254 | Collection<String> locations = getPluginLocations();
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255 |
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256 | for (String s : locations) {
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257 | File pluginFile = new File(s, pluginName + ".jar");
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258 | if (pluginFile.exists()) {
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259 | PluginInformation info = new PluginInformation(pluginFile);
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260 | return info;
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261 | }
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262 | }
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263 | return null;
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264 | }
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265 |
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266 | public static Collection<String> getPluginLocations() {
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267 | Collection<String> locations = Main.pref.getAllPossiblePreferenceDirs();
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268 | Collection<String> all = new ArrayList<String>(locations.size());
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269 | for (String s : locations) {
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270 | all.add(s+"plugins");
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271 | }
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272 | return all;
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273 | }
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274 | }
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275 |
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