1 | // License: GPL. For details, see LICENSE file.
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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.BufferedReader;
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7 | import java.io.ByteArrayInputStream;
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8 | import java.io.File;
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9 | import java.io.FileOutputStream;
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10 | import java.io.FilenameFilter;
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11 | import java.io.IOException;
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12 | import java.io.InputStream;
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13 | import java.io.InputStreamReader;
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14 | import java.io.OutputStream;
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15 | import java.io.OutputStreamWriter;
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16 | import java.io.PrintWriter;
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17 | import java.io.UnsupportedEncodingException;
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18 | import java.net.HttpURLConnection;
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19 | import java.net.MalformedURLException;
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20 | import java.net.URL;
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21 | import java.util.ArrayList;
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22 | import java.util.Arrays;
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23 | import java.util.Collection;
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24 | import java.util.Collections;
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25 | import java.util.HashSet;
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26 | import java.util.LinkedList;
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27 | import java.util.List;
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28 |
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29 | import org.openstreetmap.josm.Main;
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30 | import org.openstreetmap.josm.data.Version;
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31 | import org.openstreetmap.josm.gui.PleaseWaitRunnable;
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32 | import org.openstreetmap.josm.gui.progress.NullProgressMonitor;
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33 | import org.openstreetmap.josm.gui.progress.ProgressMonitor;
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34 | import org.openstreetmap.josm.io.OsmTransferException;
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35 | import org.openstreetmap.josm.tools.ImageProvider;
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36 | import org.xml.sax.SAXException;
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37 |
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38 | /**
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39 | * An asynchronous task for downloading plugin lists from the configured plugin download
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40 | * sites.
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41 | *
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42 | */
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43 | public class ReadRemotePluginInformationTask extends PleaseWaitRunnable{
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44 |
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45 | private Collection<String> sites;
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46 | private boolean canceled;
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47 | private HttpURLConnection connection;
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48 | private List<PluginInformation> availablePlugins;
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49 |
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50 | protected enum CacheType {PLUGIN_LIST, ICON_LIST}
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51 |
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52 | protected void init(Collection<String> sites){
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53 | this.sites = sites;
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54 | if (sites == null) {
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55 | this.sites = Collections.emptySet();
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56 | }
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57 | availablePlugins = new LinkedList<PluginInformation>();
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58 |
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59 | }
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60 | /**
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61 | * Creates the task
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62 | *
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63 | * @param sites the collection of download sites. Defaults to the empty collection if null.
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64 | */
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65 | public ReadRemotePluginInformationTask(Collection<String> sites) {
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66 | super(tr("Download plugin list..."), false /* don't ignore exceptions */);
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67 | init(sites);
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68 | }
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69 |
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70 | /**
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71 | * Creates the task
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72 | *
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73 | * @param monitor the progress monitor. Defaults to {@see NullProgressMonitor#INSTANCE} if null
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74 | * @param sites the collection of download sites. Defaults to the empty collection if null.
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75 | */
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76 | public ReadRemotePluginInformationTask(ProgressMonitor monitor, Collection<String> sites) {
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77 | super(tr("Download plugin list..."), monitor == null ? NullProgressMonitor.INSTANCE: monitor, false /* don't ignore exceptions */);
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78 | init(sites);
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79 | }
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80 |
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81 |
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82 | @Override
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83 | protected void cancel() {
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84 | canceled = true;
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85 | synchronized(this) {
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86 | if (connection != null) {
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87 | connection.disconnect();
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88 | }
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89 | }
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90 | }
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91 |
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92 | @Override
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93 | protected void finish() {}
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94 |
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95 | /**
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96 | * Creates the file name for the cached plugin list and the icon cache
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97 | * file.
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98 | *
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99 | * @param site the name of the site
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100 | * @param type icon cache or plugin list cache
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101 | * @return the file name for the cache file
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102 | */
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103 | protected File createSiteCacheFile(File pluginDir, String site, CacheType type) {
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104 | String name;
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105 | try {
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106 | site = site.replaceAll("%<(.*)>", "");
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107 | URL url = new URL(site);
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108 | StringBuilder sb = new StringBuilder();
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109 | sb.append("site-");
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110 | sb.append(url.getHost()).append("-");
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111 | if (url.getPort() != -1) {
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112 | sb.append(url.getPort()).append("-");
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113 | }
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114 | String path = url.getPath();
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115 | for (int i =0;i<path.length(); i++) {
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116 | char c = path.charAt(i);
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117 | if (Character.isLetterOrDigit(c)) {
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118 | sb.append(c);
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119 | } else {
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120 | sb.append("_");
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121 | }
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122 | }
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123 | switch (type) {
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124 | case PLUGIN_LIST:
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125 | sb.append(".txt");
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126 | break;
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127 | case ICON_LIST:
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128 | sb.append("-icons.zip");
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129 | break;
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130 | }
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131 | name = sb.toString();
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132 | } catch(MalformedURLException e) {
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133 | name = "site-unknown.txt";
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134 | }
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135 | return new File(pluginDir, name);
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136 | }
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137 |
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138 | /**
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139 | * Downloads the list from a remote location
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140 | *
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141 | * @param site the site URL
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142 | * @param monitor a progress monitor
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143 | * @return the downloaded list
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144 | */
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145 | protected String downloadPluginList(String site, ProgressMonitor monitor) {
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146 | BufferedReader in = null;
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147 | StringBuilder sb = new StringBuilder();
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148 | try {
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149 | /* replace %<x> with empty string or x=plugins (separated with comma) */
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150 | String pl = Main.pref.getCollectionAsString("plugins");
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151 | String printsite = site.replaceAll("%<(.*)>", "");
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152 | if(pl != null && pl.length() != 0) {
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153 | site = site.replaceAll("%<(.*)>", "$1"+pl);
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154 | } else {
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155 | site = printsite;
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156 | }
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157 |
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158 | monitor.beginTask("");
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159 | monitor.indeterminateSubTask(tr("Downloading plugin list from ''{0}''", printsite));
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160 |
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161 | URL url = new URL(site);
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162 | synchronized(this) {
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163 | connection = (HttpURLConnection)url.openConnection();
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164 | connection.setRequestProperty("Cache-Control", "no-cache");
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165 | connection.setRequestProperty("User-Agent",Version.getInstance().getAgentString());
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166 | connection.setRequestProperty("Host", url.getHost());
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167 | connection.setRequestProperty("Accept-Charset", "utf-8");
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168 | }
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169 | in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
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170 | String line;
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171 | while((line = in.readLine()) != null) {
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172 | sb.append(line).append("\n");
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173 | }
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174 | return sb.toString();
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175 | } catch(MalformedURLException e) {
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176 | if (canceled) return null;
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177 | e.printStackTrace();
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178 | return null;
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179 | } catch(IOException e) {
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180 | if (canceled) return null;
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181 | e.printStackTrace();
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182 | return null;
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183 | } finally {
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184 | synchronized(this) {
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185 | if (connection != null) {
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186 | connection.disconnect();
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187 | }
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188 | connection = null;
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189 | }
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190 | if (in != null) {
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191 | try {
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192 | in.close();
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193 | } catch(IOException e){/* ignore */}
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194 | }
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195 | monitor.finishTask();
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196 | }
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197 | }
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198 |
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199 | /**
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200 | * Downloads the icon archive from a remote location
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201 | *
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202 | * @param site the site URL
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203 | * @param monitor a progress monitor
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204 | */
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205 | protected void downloadPluginIcons(String site, File destFile, ProgressMonitor monitor) {
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206 | InputStream in = null;
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207 | OutputStream out = null;
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208 | try {
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209 | site = site.replaceAll("%<(.*)>", "");
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210 |
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211 | monitor.beginTask("");
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212 | monitor.indeterminateSubTask(tr("Downloading plugin list from ''{0}''", site));
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213 |
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214 | URL url = new URL(site);
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215 | synchronized(this) {
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216 | connection = (HttpURLConnection)url.openConnection();
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217 | connection.setRequestProperty("Cache-Control", "no-cache");
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218 | connection.setRequestProperty("User-Agent",Version.getInstance().getAgentString());
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219 | connection.setRequestProperty("Host", url.getHost());
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220 | }
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221 | in = connection.getInputStream();
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222 | out = new FileOutputStream(destFile);
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223 | byte[] buffer = new byte[8192];
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224 | for (int read = in.read(buffer); read != -1; read = in.read(buffer)) {
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225 | out.write(buffer, 0, read);
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226 | }
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227 | out.close();
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228 | in.close();
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229 | } catch(MalformedURLException e) {
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230 | if (canceled) return;
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231 | e.printStackTrace();
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232 | return;
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233 | } catch(IOException e) {
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234 | if (canceled) return;
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235 | e.printStackTrace();
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236 | return;
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237 | } finally {
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238 | synchronized(this) {
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239 | if (connection != null) {
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240 | connection.disconnect();
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241 | }
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242 | connection = null;
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243 | }
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244 | if (in != null) {
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245 | try {
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246 | in.close();
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247 | } catch(IOException e){/* ignore */}
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248 | }
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249 | monitor.finishTask();
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250 | }
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251 | for (PluginInformation pi : availablePlugins) {
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252 | if (pi.icon == null && pi.iconPath != null) {
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253 | pi.icon = ImageProvider.getIfAvailable(null, null, null, pi.name+".jar/"+pi.iconPath, destFile);
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254 | }
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255 | }
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256 | }
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257 |
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258 | /**
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259 | * Writes the list of plugins to a cache file
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260 | *
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261 | * @param site the site from where the list was downloaded
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262 | * @param list the downloaded list
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263 | */
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264 | protected void cachePluginList(String site, String list) {
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265 | PrintWriter writer = null;
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266 | try {
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267 | File pluginDir = Main.pref.getPluginsDirectory();
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268 | if (!pluginDir.exists()) {
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269 | if (! pluginDir.mkdirs()) {
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270 | System.err.println(tr("Warning: failed to create plugin directory ''{0}''. Cannot cache plugin list from plugin site ''{1}''.", pluginDir.toString(), site));
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271 | }
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272 | }
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273 | File cacheFile = createSiteCacheFile(pluginDir, site, CacheType.PLUGIN_LIST);
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274 | getProgressMonitor().subTask(tr("Writing plugin list to local cache ''{0}''", cacheFile.toString()));
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275 | writer = new PrintWriter(new OutputStreamWriter(new FileOutputStream(cacheFile), "utf-8"));
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276 | writer.write(list);
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277 | } catch(IOException e) {
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278 | // just failed to write the cache file. No big deal, but log the exception anyway
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279 | e.printStackTrace();
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280 | } finally {
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281 | if (writer != null) {
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282 | writer.flush();
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283 | writer.close();
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284 | }
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285 | }
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286 | }
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287 |
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288 | /**
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289 | * Filter information about deprecated plugins from the list of downloaded
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290 | * plugins
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291 | *
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292 | * @param plugins the plugin informations
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293 | * @return the plugin informations, without deprecated plugins
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294 | */
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295 | protected List<PluginInformation> filterDeprecatedPlugins(List<PluginInformation> plugins) {
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296 | List<PluginInformation> ret = new ArrayList<PluginInformation>(plugins.size());
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297 | HashSet<String> deprecatedPluginNames = new HashSet<String>();
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298 | for (PluginHandler.DeprecatedPlugin p : PluginHandler.DEPRECATED_PLUGINS) {
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299 | deprecatedPluginNames.add(p.name);
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300 | }
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301 | for (PluginInformation plugin: plugins) {
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302 | if (deprecatedPluginNames.contains(plugin.name)) {
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303 | continue;
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304 | }
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305 | ret.add(plugin);
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306 | }
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307 | return ret;
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308 | }
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309 |
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310 | /**
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311 | * Parses the plugin list
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312 | *
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313 | * @param site the site from where the list was downloaded
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314 | * @param doc the document with the plugin list
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315 | */
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316 | protected void parsePluginListDocument(String site, String doc) {
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317 | try {
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318 | getProgressMonitor().subTask(tr("Parsing plugin list from site ''{0}''", site));
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319 | InputStream in = new ByteArrayInputStream(doc.getBytes("UTF-8"));
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320 | List<PluginInformation> pis = new PluginListParser().parse(in);
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321 | availablePlugins.addAll(filterDeprecatedPlugins(pis));
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322 | } catch(UnsupportedEncodingException e) {
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323 | System.err.println(tr("Failed to parse plugin list document from site ''{0}''. Skipping site. Exception was: {1}", site, e.toString()));
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324 | e.printStackTrace();
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325 | } catch(PluginListParseException e) {
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326 | System.err.println(tr("Failed to parse plugin list document from site ''{0}''. Skipping site. Exception was: {1}", site, e.toString()));
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327 | e.printStackTrace();
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328 | }
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329 | }
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330 |
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331 | @Override
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332 | protected void realRun() throws SAXException, IOException, OsmTransferException {
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333 | if (sites == null) return;
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334 | getProgressMonitor().setTicksCount(sites.size() * 3);
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335 | File pluginDir = Main.pref.getPluginsDirectory();
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336 |
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337 | // collect old cache files and remove if no longer in use
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338 | List<File> siteCacheFiles = new LinkedList<File>();
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339 | for (String location : PluginInformation.getPluginLocations()) {
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340 | File [] f = new File(location).listFiles(
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341 | new FilenameFilter() {
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342 | public boolean accept(File dir, String name) {
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343 | return name.matches("^([0-9]+-)?site.*\\.txt$") ||
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344 | name.matches("^([0-9]+-)?site.*-icons\\.zip$");
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345 | }
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346 | }
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347 | );
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348 | if(f != null && f.length > 0) {
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349 | siteCacheFiles.addAll(Arrays.asList(f));
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350 | }
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351 | }
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352 |
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353 | for (String site: sites) {
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354 | String printsite = site.replaceAll("%<(.*)>", "");
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355 | getProgressMonitor().subTask(tr("Processing plugin list from site ''{0}''", printsite));
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356 | String list = downloadPluginList(site, getProgressMonitor().createSubTaskMonitor(0, false));
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357 | if (canceled) return;
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358 | siteCacheFiles.remove(createSiteCacheFile(pluginDir, site, CacheType.PLUGIN_LIST));
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359 | siteCacheFiles.remove(createSiteCacheFile(pluginDir, site, CacheType.ICON_LIST));
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360 | if(list != null)
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361 | {
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362 | getProgressMonitor().worked(1);
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363 | cachePluginList(site, list);
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364 | if (canceled) return;
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365 | getProgressMonitor().worked(1);
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366 | parsePluginListDocument(site, list);
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367 | if (canceled) return;
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368 | getProgressMonitor().worked(1);
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369 | if (canceled) return;
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370 | }
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371 | downloadPluginIcons(site+"-icons.zip", createSiteCacheFile(pluginDir, site, CacheType.ICON_LIST), getProgressMonitor().createSubTaskMonitor(0, false));
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372 | }
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373 | for (File file: siteCacheFiles) /* remove old stuff or whole update process is broken */
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374 | {
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375 | file.delete();
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376 | }
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377 | }
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378 |
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379 | /**
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380 | * Replies true if the task was canceled
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381 | * @return
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382 | */
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383 | public boolean isCanceled() {
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384 | return canceled;
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385 | }
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386 |
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387 | /**
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388 | * Replies the list of plugins described in the downloaded plugin lists
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389 | *
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390 | * @return the list of plugins
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391 | */
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392 | public List<PluginInformation> getAvailabePlugins() {
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393 | return availablePlugins;
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394 | }
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395 | }
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