1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others
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2 | package org.openstreetmap.josm.io;
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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.awt.Font;
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7 | import java.awt.GridBagLayout;
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8 | import java.net.Authenticator;
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9 | import java.net.HttpURLConnection;
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10 | import java.net.PasswordAuthentication;
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11 | import java.nio.ByteBuffer;
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12 | import java.nio.CharBuffer;
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13 | import java.nio.charset.CharacterCodingException;
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14 | import java.nio.charset.Charset;
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15 | import java.nio.charset.CharsetEncoder;
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16 |
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17 | import javax.swing.JCheckBox;
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18 | import javax.swing.JLabel;
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19 | import javax.swing.JPanel;
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20 | import javax.swing.JPasswordField;
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21 | import javax.swing.JTextField;
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22 |
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23 | import org.openstreetmap.josm.Main;
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24 | import org.openstreetmap.josm.gui.ExtendedDialog;
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25 | import org.openstreetmap.josm.gui.progress.ProgressMonitor;
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26 | import org.openstreetmap.josm.tools.Base64;
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27 | import org.openstreetmap.josm.tools.GBC;
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28 |
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29 | /**
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30 | * Base class that handles common things like authentication for the reader and writer
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31 | * to the osm server.
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32 | *
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33 | * @author imi
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34 | */
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35 | public class OsmConnection {
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36 |
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37 | protected boolean cancel = false;
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38 | protected HttpURLConnection activeConnection;
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39 | /**
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40 | * Handles password storage and some related gui-components.
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41 | * It can be set by a plugin. This may happen at startup and
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42 | * by changing the preferences.
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43 | * Syncronize on this object to get or set a consistent
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44 | * username/password pair.
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45 | */
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46 | public static CredentialsManager credentialsManager = new PlainCredentialsManager();
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47 |
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48 | private static OsmAuth authentication = new OsmAuth();
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49 |
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50 | /**
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51 | * Initialize the http defaults and the authenticator.
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52 | */
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53 | static {
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54 | // TODO: current authentication handling is sub-optimal in that it seems to use the same authenticator for
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55 | // any kind of request. HTTP requests executed by plugins, e.g. to password-protected WMS servers,
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56 | // will use the same username/password which is undesirable.
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57 | try {
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58 | HttpURLConnection.setFollowRedirects(true);
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59 | Authenticator.setDefault(authentication);
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60 | } catch (SecurityException e) {
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61 | }
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62 | }
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63 |
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64 | /**
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65 | * The authentication class handling the login requests.
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66 | */
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67 | public static class OsmAuth extends Authenticator {
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68 | /**
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69 | * Set to true, when the autenticator tried the password once.
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70 | */
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71 | public boolean passwordtried = false;
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72 | /**
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73 | * Whether the user cancelled the password dialog
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74 | */
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75 | public boolean authCancelled = false;
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76 | @Override protected PasswordAuthentication getPasswordAuthentication() {
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77 | return credentialsManager.getPasswordAuthentication(this);
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78 | }
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79 | }
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80 |
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81 | /**
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82 | * Must be called before each connection attemp to initialize the authentication.
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83 | */
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84 | protected final void initAuthentication() {
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85 | authentication.authCancelled = false;
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86 | authentication.passwordtried = false;
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87 | }
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88 |
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89 | /**
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90 | * @return Whether the connection was cancelled.
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91 | */
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92 | protected final boolean isAuthCancelled() {
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93 | return authentication.authCancelled;
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94 | }
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95 |
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96 | public void cancel() {
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97 | cancel = true;
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98 | if (activeConnection != null) {
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99 | activeConnection.setConnectTimeout(100);
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100 | activeConnection.setReadTimeout(100);
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101 | try {
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102 | Thread.sleep(100);
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103 | } catch (InterruptedException ex) {}
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104 | activeConnection.disconnect();
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105 | }
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106 | }
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107 |
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108 | protected void addAuth(HttpURLConnection con) throws CharacterCodingException {
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109 | CharsetEncoder encoder = Charset.forName("UTF-8").newEncoder();
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110 | String auth;
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111 | try {
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112 | synchronized (credentialsManager) {
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113 | auth = credentialsManager.lookup(CredentialsManager.Key.USERNAME) + ":" +
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114 | credentialsManager.lookup(CredentialsManager.Key.PASSWORD);
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115 | }
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116 | } catch (CredentialsManager.CMException e) {
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117 | auth = ":";
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118 | }
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119 | ByteBuffer bytes = encoder.encode(CharBuffer.wrap(auth));
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120 | con.addRequestProperty("Authorization", "Basic "+Base64.encode(bytes));
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121 | }
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122 |
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123 | /**
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124 | * Replies true if this connection is canceled
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125 | *
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126 | * @return true if this connection is canceled
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127 | * @return
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128 | */
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129 | public boolean isCanceled() {
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130 | return cancel;
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131 | }
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132 | /**
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133 | * Default implementation of the CredentialsManager interface.
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134 | * Saves passwords in plain text file.
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135 | */
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136 | public static class PlainCredentialsManager implements CredentialsManager {
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137 | public String lookup(CredentialsManager.Key key) throws CMException {
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138 | String secret = Main.pref.get("osm-server." + key.toString(), null);
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139 | if (secret == null) throw new CredentialsManager.NoContentException();
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140 | return secret;
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141 | }
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142 | public void store(CredentialsManager.Key key, String secret) {
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143 | Main.pref.put("osm-server." + key.toString(), secret);
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144 | }
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145 | public PasswordAuthentication getPasswordAuthentication(OsmAuth caller) {
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146 | String username, password;
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147 | try {
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148 | username = lookup(Key.USERNAME);
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149 | } catch (CMException e) {
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150 | username = "";
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151 | }
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152 | try {
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153 | password = lookup(Key.PASSWORD);
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154 | } catch (CMException e) {
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155 | password = "";
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156 | }
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157 | if (caller.passwordtried || username.equals("") || password.equals("")) {
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158 | JPanel p = new JPanel(new GridBagLayout());
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159 | if (!username.equals("") && !password.equals("")) {
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160 | p.add(new JLabel(tr("Incorrect password or username.")), GBC.eop());
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161 | }
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162 | p.add(new JLabel(tr("Username")), GBC.std().insets(0,0,10,0));
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163 | JTextField usernameField = new JTextField(username, 20);
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164 | p.add(usernameField, GBC.eol());
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165 | p.add(new JLabel(tr("Password")), GBC.std().insets(0,0,10,0));
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166 | JPasswordField passwordField = new JPasswordField(password, 20);
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167 | p.add(passwordField, GBC.eol());
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168 | JLabel warning = new JLabel(tr("Warning: The password is transferred unencrypted."));
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169 | warning.setFont(warning.getFont().deriveFont(Font.ITALIC));
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170 | p.add(warning, GBC.eop());
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171 |
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172 | JCheckBox savePassword = new JCheckBox(tr("Save user and password (unencrypted)"),
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173 | !username.equals("") && !password.equals(""));
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174 | p.add(savePassword, GBC.eop());
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175 |
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176 | ExtendedDialog dialog = new ExtendedDialog(
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177 | Main.parent,
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178 | tr("Enter Password"),
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179 | new String[] {tr("Login"), tr("Cancel")}
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180 | );
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181 | dialog.setContent(p);
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182 | dialog.setButtonIcons( new String[] {"ok.png", "cancel.png"});
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183 | dialog.showDialog();
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184 |
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185 | if (dialog.getValue() != 1) {
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186 | caller.authCancelled = true;
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187 | return null;
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188 | }
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189 | username = usernameField.getText();
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190 | password = String.valueOf(passwordField.getPassword());
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191 | if (savePassword.isSelected()) {
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192 | store(Key.USERNAME, username);
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193 | store(Key.PASSWORD, password);
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194 | }
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195 | if (username.equals(""))
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196 | return null;
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197 | }
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198 | caller.passwordtried = true;
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199 | return new PasswordAuthentication(username, password.toCharArray());
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200 | }
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201 | public PreferenceAdditions newPreferenceAdditions() {
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202 | return new PreferenceAdditions() {
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203 | /**
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204 | * Editfield for the Base url to the REST API from OSM.
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205 | */
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206 | final private JTextField osmDataServerURL = new JTextField(20);
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207 | /**
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208 | * Editfield for the username to the OSM account.
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209 | */
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210 | final private JTextField osmDataUsername = new JTextField(20);
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211 | /**
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212 | * Passwordfield for the userpassword of the REST API.
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213 | */
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214 | final private JPasswordField osmDataPassword = new JPasswordField(20);
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215 |
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216 | private String oldServerURL = "";
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217 | private String oldUsername = "";
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218 | private String oldPassword = "";
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219 |
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220 | public void addPreferenceOptions(JPanel panel) {
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221 | try {
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222 | oldServerURL = lookup(Key.OSM_SERVER_URL); // result is not null (see CredentialsManager)
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223 | } catch (CMException e) {
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224 | oldServerURL = "";
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225 | }
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226 | if (oldServerURL.equals("")) {
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227 | oldServerURL = "http://api.openstreetmap.org/api";
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228 | }
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229 | try {
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230 | oldUsername = lookup(Key.USERNAME);
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231 | } catch (CMException e) {
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232 | oldUsername = "";
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233 | }
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234 | try {
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235 | oldPassword = lookup(Key.PASSWORD);
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236 | } catch (CMException e) {
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237 | oldPassword = "";
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238 | }
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239 | osmDataServerURL.setText(oldServerURL);
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240 | osmDataUsername.setText(oldUsername);
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241 | osmDataPassword.setText(oldPassword);
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242 | osmDataServerURL.setToolTipText(tr("The base URL for the OSM server (REST API)"));
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243 | osmDataUsername.setToolTipText(tr("Login name (e-mail) to the OSM account."));
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244 | osmDataPassword.setToolTipText(tr("Login password to the OSM account. Leave blank to not store any password."));
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245 | panel.add(new JLabel(tr("Base Server URL")), GBC.std());
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246 | panel.add(osmDataServerURL, GBC.eol().fill(GBC.HORIZONTAL).insets(5,0,0,5));
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247 | panel.add(new JLabel(tr("OSM username (e-mail)")), GBC.std());
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248 | panel.add(osmDataUsername, GBC.eol().fill(GBC.HORIZONTAL).insets(5,0,0,5));
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249 | panel.add(new JLabel(tr("OSM password")), GBC.std());
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250 | panel.add(osmDataPassword, GBC.eol().fill(GBC.HORIZONTAL).insets(5,0,0,0));
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251 | JLabel warning = new JLabel(tr("<html>" +
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252 | "WARNING: The password is stored in plain text in the preferences file.<br>" +
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253 | "The password is transferred in plain text to the server, encoded in the URL.<br>" +
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254 | "<b>Do not use a valuable Password.</b></html>"));
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255 | warning.setFont(warning.getFont().deriveFont(Font.ITALIC));
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256 | panel.add(warning, GBC.eop().fill(GBC.HORIZONTAL));
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257 | }
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258 | public void preferencesChanged() {
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259 | String newServerURL = osmDataServerURL.getText();
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260 | String newUsername = osmDataUsername.getText();
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261 | String newPassword = String.valueOf(osmDataPassword.getPassword());
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262 | if (!oldServerURL.equals(newServerURL)) {
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263 | store(Key.OSM_SERVER_URL, newServerURL);
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264 | }
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265 | if (!oldUsername.equals(newUsername)) {
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266 | store(Key.USERNAME, newUsername);
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267 | }
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268 | if (!oldPassword.equals(newPassword)) {
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269 | store(Key.PASSWORD, newPassword);
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270 | }
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271 | }
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272 | };
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273 | }
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274 | }
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275 | }
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