| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| BrowserDetector |
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| 3.909090909090909;3,909 |
| 1 | package org.apache.turbine.util; | |
| 2 | ||
| 3 | /* | |
| 4 | * Licensed to the Apache Software Foundation (ASF) under one | |
| 5 | * or more contributor license agreements. See the NOTICE file | |
| 6 | * distributed with this work for additional information | |
| 7 | * regarding copyright ownership. The ASF licenses this file | |
| 8 | * to you under the Apache License, Version 2.0 (the | |
| 9 | * "License"); you may not use this file except in compliance | |
| 10 | * with the License. You may obtain a copy of the License at | |
| 11 | * | |
| 12 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 13 | * | |
| 14 | * Unless required by applicable law or agreed to in writing, | |
| 15 | * software distributed under the License is distributed on an | |
| 16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| 17 | * KIND, either express or implied. See the License for the | |
| 18 | * specific language governing permissions and limitations | |
| 19 | * under the License. | |
| 20 | */ | |
| 21 | ||
| 22 | /** | |
| 23 | * This class parses the user agent string and sets javasciptOK and | |
| 24 | * cssOK following the rules described below. If you want to check | |
| 25 | * for specific browsers/versions then use this class to parse the | |
| 26 | * user agent string and use the accessor methods in this class. | |
| 27 | * | |
| 28 | * JavaScriptOK means that the browser understands JavaScript on the | |
| 29 | * same level the Navigator 3 does. Specifically, it can use named | |
| 30 | * images. This allows easier rollovers. If a browser doesn't do | |
| 31 | * this (Nav 2 or MSIE 3), then we just assume it can't do any | |
| 32 | * JavaScript. Referencing images by load order is too hard to | |
| 33 | * maintain. | |
| 34 | * | |
| 35 | * CSSOK is kind of sketchy in that Nav 4 and MSIE work differently, | |
| 36 | * but they do seem to have most of the functionality. MSIE 4 for the | |
| 37 | * Mac has buggy CSS support, so we let it do JavaScript, but no CSS. | |
| 38 | * | |
| 39 | * Ported from Leon's PHP code at | |
| 40 | * http://www.working-dogs.com/freetrade by Frank. | |
| 41 | * | |
| 42 | * @author <a href="mailto:frank.kim@clearink.com">Frank Y. Kim</a> | |
| 43 | * @author <a href="mailto:leon@clearink.com">Leon Atkisnon</a> | |
| 44 | * @author <a href="mailto:mospaw@polk-county.com">Chris Mospaw</a> | |
| 45 | * @author <a href="mailto:bgriffin@cddb.com">Benjamin Elijah Griffin</a> | |
| 46 | * @version $Id: BrowserDetector.java 615328 2008-01-25 20:25:05Z tv $ | |
| 47 | */ | |
| 48 | public class BrowserDetector | |
| 49 | { | |
| 50 | public static final String MSIE = "MSIE"; | |
| 51 | public static final String OPERA = "Opera"; | |
| 52 | public static final String MOZILLA = "Mozilla"; | |
| 53 | ||
| 54 | public static final String WINDOWS = "Windows"; | |
| 55 | public static final String UNIX = "Unix"; | |
| 56 | public static final String MACINTOSH = "Macintosh"; | |
| 57 | ||
| 58 | /** The user agent string. */ | |
| 59 | 10 | private String userAgentString = ""; |
| 60 | ||
| 61 | /** The browser name specified in the user agent string. */ | |
| 62 | 10 | private String browserName = ""; |
| 63 | ||
| 64 | /** | |
| 65 | * The browser version specified in the user agent string. If we | |
| 66 | * can't parse the version just assume an old browser. | |
| 67 | */ | |
| 68 | 10 | private float browserVersion = (float) 1.0; |
| 69 | ||
| 70 | /** | |
| 71 | * The browser platform specified in the user agent string. | |
| 72 | */ | |
| 73 | 10 | private String browserPlatform = "unknown"; |
| 74 | ||
| 75 | /** Whether or not javascript works in this browser. */ | |
| 76 | 10 | private boolean javascriptOK = false; |
| 77 | ||
| 78 | /** Whether or not CSS works in this browser. */ | |
| 79 | 10 | private boolean cssOK = false; |
| 80 | ||
| 81 | /** Whether or not file upload works in this browser. */ | |
| 82 | 10 | private boolean fileUploadOK = false; |
| 83 | ||
| 84 | /** | |
| 85 | * Constructor used to initialize this class. | |
| 86 | * | |
| 87 | * @param userAgentString A String with the user agent field. | |
| 88 | */ | |
| 89 | public BrowserDetector(String userAgentString) | |
| 90 | 10 | { |
| 91 | 10 | this.userAgentString = userAgentString; |
| 92 | 10 | parse(); |
| 93 | 10 | } |
| 94 | ||
| 95 | /** | |
| 96 | * Constructor used to initialize this class. | |
| 97 | * | |
| 98 | * @param data The Turbine RunData object. | |
| 99 | */ | |
| 100 | public BrowserDetector(RunData data) | |
| 101 | 0 | { |
| 102 | 0 | this.userAgentString = data.getUserAgent(); |
| 103 | 0 | parse(); |
| 104 | 0 | } |
| 105 | ||
| 106 | /** | |
| 107 | * Whether or not CSS works in this browser. | |
| 108 | * | |
| 109 | * @return True if CSS works in this browser. | |
| 110 | */ | |
| 111 | public boolean isCssOK() | |
| 112 | { | |
| 113 | 0 | return cssOK; |
| 114 | } | |
| 115 | ||
| 116 | /** | |
| 117 | * Whether or not file upload works in this browser. | |
| 118 | * | |
| 119 | * @return True if file upload works in this browser. | |
| 120 | */ | |
| 121 | public boolean isFileUploadOK() | |
| 122 | { | |
| 123 | 0 | return fileUploadOK; |
| 124 | } | |
| 125 | ||
| 126 | /** | |
| 127 | * Whether or not Javascript works in this browser. | |
| 128 | * | |
| 129 | * @return True if Javascript works in this browser. | |
| 130 | */ | |
| 131 | public boolean isJavascriptOK() | |
| 132 | { | |
| 133 | 0 | return javascriptOK; |
| 134 | } | |
| 135 | ||
| 136 | /** | |
| 137 | * The browser name specified in the user agent string. | |
| 138 | * | |
| 139 | * @return A String with the browser name. | |
| 140 | */ | |
| 141 | public String getBrowserName() | |
| 142 | { | |
| 143 | 10 | return browserName; |
| 144 | } | |
| 145 | ||
| 146 | /** | |
| 147 | * The browser platform specified in the user agent string. | |
| 148 | * | |
| 149 | * @return A String with the browser platform. | |
| 150 | */ | |
| 151 | public String getBrowserPlatform() | |
| 152 | { | |
| 153 | 10 | return browserPlatform; |
| 154 | } | |
| 155 | ||
| 156 | /** | |
| 157 | * The browser version specified in the user agent string. | |
| 158 | * | |
| 159 | * @return A String with the browser version. | |
| 160 | */ | |
| 161 | public float getBrowserVersion() | |
| 162 | { | |
| 163 | 10 | return browserVersion; |
| 164 | } | |
| 165 | ||
| 166 | /** | |
| 167 | * The user agent string for this class. | |
| 168 | * | |
| 169 | * @return A String with the user agent. | |
| 170 | */ | |
| 171 | public String getUserAgentString() | |
| 172 | { | |
| 173 | 0 | return userAgentString; |
| 174 | } | |
| 175 | ||
| 176 | /** | |
| 177 | * Helper method to initialize this class. | |
| 178 | */ | |
| 179 | private void parse() | |
| 180 | { | |
| 181 | 10 | int versionStartIndex = userAgentString.indexOf("/"); |
| 182 | 10 | int versionEndIndex = userAgentString.indexOf(" "); |
| 183 | ||
| 184 | // Get the browser name and version. | |
| 185 | 10 | browserName = userAgentString.substring(0, versionStartIndex); |
| 186 | try | |
| 187 | { | |
| 188 | // Not all user agents will have a space in the reported | |
| 189 | // string. | |
| 190 | 10 | String agentSubstring = null; |
| 191 | 10 | if (versionEndIndex < 0) |
| 192 | { | |
| 193 | 0 | agentSubstring |
| 194 | = userAgentString.substring(versionStartIndex + 1); | |
| 195 | } | |
| 196 | else | |
| 197 | { | |
| 198 | 10 | agentSubstring = userAgentString |
| 199 | .substring(versionStartIndex + 1, versionEndIndex); | |
| 200 | } | |
| 201 | 10 | browserVersion = toFloat(agentSubstring); |
| 202 | } | |
| 203 | 0 | catch (NumberFormatException e) |
| 204 | { | |
| 205 | // Just use the default value. | |
| 206 | 10 | } |
| 207 | ||
| 208 | // MSIE lies about its name. Of course... | |
| 209 | 10 | if (userAgentString.indexOf(MSIE) != -1) |
| 210 | { | |
| 211 | // Ex: Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt) | |
| 212 | 6 | versionStartIndex = (userAgentString.indexOf(MSIE) |
| 213 | + MSIE.length() + 1); | |
| 214 | 6 | versionEndIndex = userAgentString.indexOf(";", versionStartIndex); |
| 215 | ||
| 216 | 6 | browserName = MSIE; |
| 217 | try | |
| 218 | { | |
| 219 | 6 | browserVersion = toFloat(userAgentString |
| 220 | .substring(versionStartIndex, versionEndIndex)); | |
| 221 | } | |
| 222 | 0 | catch (NumberFormatException e) |
| 223 | { | |
| 224 | // Just use the default value. | |
| 225 | 6 | } |
| 226 | ||
| 227 | // PHP code | |
| 228 | // $Browser_Name = "MSIE"; | |
| 229 | // $Browser_Version = strtok("MSIE"); | |
| 230 | // $Browser_Version = strtok(" "); | |
| 231 | // $Browser_Version = strtok(";"); | |
| 232 | } | |
| 233 | ||
| 234 | // Opera isn't completely honest, either... | |
| 235 | // Modificaton by Chris Mospaw <mospaw@polk-county.com> | |
| 236 | 10 | if (userAgentString.indexOf(OPERA) != -1) |
| 237 | { | |
| 238 | // Ex: Mozilla/4.0 (Windows NT 4.0;US) Opera 3.61 [en] | |
| 239 | // Ex: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; en) Opera 8.02 | |
| 240 | 4 | versionStartIndex = (userAgentString.indexOf(OPERA) |
| 241 | + OPERA.length() + 1); | |
| 242 | 4 | versionEndIndex = userAgentString.indexOf(" ", versionStartIndex); |
| 243 | 4 | if (versionEndIndex == -1) |
| 244 | { | |
| 245 | 2 | versionEndIndex = userAgentString.length(); |
| 246 | } | |
| 247 | ||
| 248 | 4 | browserName = OPERA; |
| 249 | try | |
| 250 | { | |
| 251 | 4 | browserVersion = toFloat(userAgentString |
| 252 | .substring(versionStartIndex, versionEndIndex)); | |
| 253 | } | |
| 254 | 0 | catch (NumberFormatException e) |
| 255 | { | |
| 256 | // Just use the default value. | |
| 257 | 4 | } |
| 258 | ||
| 259 | // PHP code | |
| 260 | // $Browser_Name = "Opera"; | |
| 261 | // $Browser_Version = strtok("Opera"); | |
| 262 | // $Browser_Version = strtok("/"); | |
| 263 | // $Browser_Version = strtok(";"); | |
| 264 | } | |
| 265 | ||
| 266 | ||
| 267 | // Try to figure out what platform. | |
| 268 | 10 | if ((userAgentString.indexOf("Windows") != -1) |
| 269 | || (userAgentString.indexOf("WinNT") != -1) | |
| 270 | || (userAgentString.indexOf("Win98") != -1) | |
| 271 | || (userAgentString.indexOf("Win95") != -1)) | |
| 272 | { | |
| 273 | 10 | browserPlatform = WINDOWS; |
| 274 | } | |
| 275 | ||
| 276 | 10 | if (userAgentString.indexOf("Mac") != -1) |
| 277 | { | |
| 278 | 0 | browserPlatform = MACINTOSH; |
| 279 | } | |
| 280 | ||
| 281 | 10 | if (userAgentString.indexOf("X11") != -1) |
| 282 | { | |
| 283 | 0 | browserPlatform = UNIX; |
| 284 | } | |
| 285 | ||
| 286 | 10 | if (browserPlatform == WINDOWS) |
| 287 | { | |
| 288 | 10 | if (browserName.equals(MOZILLA)) |
| 289 | { | |
| 290 | 2 | if (browserVersion >= 3.0) |
| 291 | { | |
| 292 | 2 | javascriptOK = true; |
| 293 | 2 | fileUploadOK = true; |
| 294 | } | |
| 295 | 2 | if (browserVersion >= 4.0) |
| 296 | { | |
| 297 | 2 | cssOK = true; |
| 298 | } | |
| 299 | } | |
| 300 | 8 | else if (browserName == MSIE) |
| 301 | { | |
| 302 | 4 | if (browserVersion >= 4.0) |
| 303 | { | |
| 304 | 4 | javascriptOK = true; |
| 305 | 4 | fileUploadOK = true; |
| 306 | 4 | cssOK = true; |
| 307 | } | |
| 308 | } | |
| 309 | 4 | else if (browserName == OPERA) |
| 310 | { | |
| 311 | 4 | if (browserVersion >= 3.0) |
| 312 | { | |
| 313 | 4 | javascriptOK = true; |
| 314 | 4 | fileUploadOK = true; |
| 315 | 4 | cssOK = true; |
| 316 | } | |
| 317 | } | |
| 318 | } | |
| 319 | 0 | else if (browserPlatform == MACINTOSH) |
| 320 | { | |
| 321 | 0 | if (browserName.equals(MOZILLA)) |
| 322 | { | |
| 323 | 0 | if (browserVersion >= 3.0) |
| 324 | { | |
| 325 | 0 | javascriptOK = true; |
| 326 | 0 | fileUploadOK = true; |
| 327 | } | |
| 328 | 0 | if (browserVersion >= 4.0) |
| 329 | { | |
| 330 | 0 | cssOK = true; |
| 331 | } | |
| 332 | } | |
| 333 | 0 | else if (browserName == MSIE) |
| 334 | { | |
| 335 | 0 | if (browserVersion >= 4.0) |
| 336 | { | |
| 337 | 0 | javascriptOK = true; |
| 338 | 0 | fileUploadOK = true; |
| 339 | } | |
| 340 | 0 | if (browserVersion > 4.0) |
| 341 | { | |
| 342 | 0 | cssOK = true; |
| 343 | } | |
| 344 | } | |
| 345 | } | |
| 346 | 0 | else if (browserPlatform == UNIX) |
| 347 | { | |
| 348 | 0 | if (browserName.equals(MOZILLA)) |
| 349 | { | |
| 350 | 0 | if (browserVersion >= 3.0) |
| 351 | { | |
| 352 | 0 | javascriptOK = true; |
| 353 | 0 | fileUploadOK = true; |
| 354 | } | |
| 355 | 0 | if (browserVersion >= 4.0) |
| 356 | { | |
| 357 | 0 | cssOK = true; |
| 358 | } | |
| 359 | } | |
| 360 | } | |
| 361 | 10 | } |
| 362 | ||
| 363 | /** | |
| 364 | * Helper method to convert String to a float. | |
| 365 | * | |
| 366 | * @param s A String. | |
| 367 | * @return The String converted to float. | |
| 368 | */ | |
| 369 | private static final float toFloat(String s) | |
| 370 | { | |
| 371 | 20 | return Float.valueOf(s).floatValue(); |
| 372 | } | |
| 373 | ||
| 374 | } |