The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.webkit; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.net.WebAddress; |
| 21 | import android.net.ParseException; |
| 22 | import android.net.http.EventHandler; |
| 23 | import android.net.http.Headers; |
| 24 | import android.net.http.HttpAuthHeader; |
| 25 | import android.net.http.RequestHandle; |
| 26 | import android.net.http.SslCertificate; |
| 27 | import android.net.http.SslError; |
| 28 | import android.net.http.SslCertificate; |
| 29 | |
| 30 | import android.os.Handler; |
| 31 | import android.os.Message; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 32 | import android.util.Log; |
| 33 | import android.webkit.CacheManager.CacheResult; |
| 34 | |
| 35 | import com.android.internal.R; |
| 36 | |
| 37 | import java.io.File; |
| 38 | import java.io.IOException; |
| 39 | import java.util.ArrayList; |
| 40 | import java.util.HashMap; |
| 41 | import java.util.Map; |
| 42 | import java.util.Vector; |
| 43 | import java.util.regex.Pattern; |
| 44 | import java.util.regex.Matcher; |
| 45 | |
| 46 | import org.apache.commons.codec.binary.Base64; |
| 47 | |
| 48 | class LoadListener extends Handler implements EventHandler { |
| 49 | |
| 50 | private static final String LOGTAG = "webkit"; |
| 51 | |
| 52 | // Messages used internally to communicate state between the |
| 53 | // Network thread and the WebCore thread. |
| 54 | private static final int MSG_CONTENT_HEADERS = 100; |
| 55 | private static final int MSG_CONTENT_DATA = 110; |
| 56 | private static final int MSG_CONTENT_FINISHED = 120; |
| 57 | private static final int MSG_CONTENT_ERROR = 130; |
| 58 | private static final int MSG_LOCATION_CHANGED = 140; |
| 59 | private static final int MSG_LOCATION_CHANGED_REQUEST = 150; |
| 60 | private static final int MSG_STATUS = 160; |
| 61 | private static final int MSG_SSL_CERTIFICATE = 170; |
| 62 | private static final int MSG_SSL_ERROR = 180; |
| 63 | |
| 64 | // Standard HTTP status codes in a more representative format |
| 65 | private static final int HTTP_OK = 200; |
| 66 | private static final int HTTP_MOVED_PERMANENTLY = 301; |
| 67 | private static final int HTTP_FOUND = 302; |
| 68 | private static final int HTTP_SEE_OTHER = 303; |
| 69 | private static final int HTTP_NOT_MODIFIED = 304; |
| 70 | private static final int HTTP_TEMPORARY_REDIRECT = 307; |
| 71 | private static final int HTTP_AUTH = 401; |
| 72 | private static final int HTTP_NOT_FOUND = 404; |
| 73 | private static final int HTTP_PROXY_AUTH = 407; |
| 74 | |
| 75 | private static int sNativeLoaderCount; |
| 76 | |
| 77 | private final ByteArrayBuilder mDataBuilder = new ByteArrayBuilder(8192); |
| 78 | |
| 79 | private String mUrl; |
| 80 | private WebAddress mUri; |
| 81 | private boolean mPermanent; |
| 82 | private String mOriginalUrl; |
| 83 | private Context mContext; |
| 84 | private BrowserFrame mBrowserFrame; |
| 85 | private int mNativeLoader; |
| 86 | private String mMimeType; |
| 87 | private String mEncoding; |
| 88 | private String mTransferEncoding; |
| 89 | private int mStatusCode; |
| 90 | private String mStatusText; |
| 91 | public long mContentLength; // Content length of the incoming data |
| 92 | private boolean mCancelled; // The request has been cancelled. |
| 93 | private boolean mAuthFailed; // indicates that the prev. auth failed |
| 94 | private CacheLoader mCacheLoader; |
| 95 | private CacheManager.CacheResult mCacheResult; |
| 96 | private HttpAuthHeader mAuthHeader; |
| 97 | private int mErrorID = OK; |
| 98 | private String mErrorDescription; |
| 99 | private SslError mSslError; |
| 100 | private RequestHandle mRequestHandle; |
| 101 | |
| 102 | // Request data. It is only valid when we are doing a load from the |
| 103 | // cache. It is needed if the cache returns a redirect |
| 104 | private String mMethod; |
| 105 | private Map<String, String> mRequestHeaders; |
| 106 | private byte[] mPostData; |
| 107 | private boolean mIsHighPriority; |
| 108 | // Flag to indicate that this load is synchronous. |
| 109 | private boolean mSynchronous; |
| 110 | private Vector<Message> mMessageQueue; |
| 111 | |
| 112 | // Does this loader correspond to the main-frame top-level page? |
| 113 | private boolean mIsMainPageLoader; |
| 114 | |
| 115 | private Headers mHeaders; |
| 116 | |
| 117 | // ========================================================================= |
| 118 | // Public functions |
| 119 | // ========================================================================= |
| 120 | |
| 121 | public static LoadListener getLoadListener( |
| 122 | Context context, BrowserFrame frame, String url, |
| 123 | int nativeLoader, boolean synchronous, boolean isMainPageLoader) { |
| 124 | |
| 125 | sNativeLoaderCount += 1; |
| 126 | return new LoadListener( |
| 127 | context, frame, url, nativeLoader, synchronous, isMainPageLoader); |
| 128 | } |
| 129 | |
| 130 | public static int getNativeLoaderCount() { |
| 131 | return sNativeLoaderCount; |
| 132 | } |
| 133 | |
| 134 | LoadListener(Context context, BrowserFrame frame, String url, |
| 135 | int nativeLoader, boolean synchronous, boolean isMainPageLoader) { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 136 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 137 | Log.v(LOGTAG, "LoadListener constructor url=" + url); |
| 138 | } |
| 139 | mContext = context; |
| 140 | mBrowserFrame = frame; |
| 141 | setUrl(url); |
| 142 | mNativeLoader = nativeLoader; |
| 143 | mMimeType = ""; |
| 144 | mEncoding = ""; |
| 145 | mSynchronous = synchronous; |
| 146 | if (synchronous) { |
| 147 | mMessageQueue = new Vector<Message>(); |
| 148 | } |
| 149 | mIsMainPageLoader = isMainPageLoader; |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * We keep a count of refs to the nativeLoader so we do not create |
| 154 | * so many LoadListeners that the GREFs blow up |
| 155 | */ |
| 156 | private void clearNativeLoader() { |
| 157 | sNativeLoaderCount -= 1; |
| 158 | mNativeLoader = 0; |
| 159 | } |
| 160 | |
| 161 | /* |
| 162 | * This message handler is to facilitate communication between the network |
| 163 | * thread and the browser thread. |
| 164 | */ |
| 165 | public void handleMessage(Message msg) { |
| 166 | switch (msg.what) { |
| 167 | case MSG_CONTENT_HEADERS: |
| 168 | /* |
| 169 | * This message is sent when the LoadListener has headers |
| 170 | * available. The headers are sent onto WebCore to see what we |
| 171 | * should do with them. |
| 172 | */ |
| 173 | handleHeaders((Headers) msg.obj); |
| 174 | break; |
| 175 | |
| 176 | case MSG_CONTENT_DATA: |
| 177 | /* |
| 178 | * This message is sent when the LoadListener has data available |
| 179 | * in it's data buffer. This data buffer could be filled from a |
| 180 | * file (this thread) or from http (Network thread). |
| 181 | */ |
| 182 | if (mNativeLoader != 0 && !ignoreCallbacks()) { |
| 183 | commitLoad(); |
| 184 | } |
| 185 | break; |
| 186 | |
| 187 | case MSG_CONTENT_FINISHED: |
| 188 | /* |
| 189 | * This message is sent when the LoadListener knows that the |
| 190 | * load is finished. This message is not sent in the case of an |
| 191 | * error. |
| 192 | * |
| 193 | */ |
| 194 | handleEndData(); |
| 195 | break; |
| 196 | |
| 197 | case MSG_CONTENT_ERROR: |
| 198 | /* |
| 199 | * This message is sent when a load error has occured. The |
| 200 | * LoadListener will clean itself up. |
| 201 | */ |
| 202 | handleError(msg.arg1, (String) msg.obj); |
| 203 | break; |
| 204 | |
| 205 | case MSG_LOCATION_CHANGED: |
| 206 | /* |
| 207 | * This message is sent from LoadListener.endData to inform the |
| 208 | * browser activity that the location of the top level page |
| 209 | * changed. |
| 210 | */ |
| 211 | doRedirect(); |
| 212 | break; |
| 213 | |
| 214 | case MSG_LOCATION_CHANGED_REQUEST: |
| 215 | /* |
| 216 | * This message is sent from endData on receipt of a 307 |
| 217 | * Temporary Redirect in response to a POST -- the user must |
| 218 | * confirm whether to continue loading. If the user says Yes, |
| 219 | * we simply call MSG_LOCATION_CHANGED. If the user says No, |
| 220 | * we call MSG_CONTENT_FINISHED. |
| 221 | */ |
| 222 | Message contMsg = obtainMessage(MSG_LOCATION_CHANGED); |
| 223 | Message stopMsg = obtainMessage(MSG_CONTENT_FINISHED); |
| 224 | mBrowserFrame.getCallbackProxy().onFormResubmission( |
| 225 | stopMsg, contMsg); |
| 226 | break; |
| 227 | |
| 228 | case MSG_STATUS: |
| 229 | /* |
| 230 | * This message is sent from the network thread when the http |
| 231 | * stack has received the status response from the server. |
| 232 | */ |
| 233 | HashMap status = (HashMap) msg.obj; |
| 234 | handleStatus(((Integer) status.get("major")).intValue(), |
| 235 | ((Integer) status.get("minor")).intValue(), |
| 236 | ((Integer) status.get("code")).intValue(), |
| 237 | (String) status.get("reason")); |
| 238 | break; |
| 239 | |
| 240 | case MSG_SSL_CERTIFICATE: |
| 241 | /* |
| 242 | * This message is sent when the network thread receives a ssl |
| 243 | * certificate. |
| 244 | */ |
| 245 | handleCertificate((SslCertificate) msg.obj); |
| 246 | break; |
| 247 | |
| 248 | case MSG_SSL_ERROR: |
| 249 | /* |
| 250 | * This message is sent when the network thread encounters a |
| 251 | * ssl error. |
| 252 | */ |
| 253 | handleSslError((SslError) msg.obj); |
| 254 | break; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | /** |
| 259 | * @return The loader's BrowserFrame. |
| 260 | */ |
| 261 | BrowserFrame getFrame() { |
| 262 | return mBrowserFrame; |
| 263 | } |
| 264 | |
| 265 | Context getContext() { |
| 266 | return mContext; |
| 267 | } |
| 268 | |
| 269 | /* package */ boolean isSynchronous() { |
| 270 | return mSynchronous; |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * @return True iff the load has been cancelled |
| 275 | */ |
| 276 | public boolean cancelled() { |
| 277 | return mCancelled; |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * Parse the headers sent from the server. |
| 282 | * @param headers gives up the HeaderGroup |
| 283 | * IMPORTANT: as this is called from network thread, can't call native |
| 284 | * directly |
| 285 | */ |
| 286 | public void headers(Headers headers) { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 287 | if (WebView.LOGV_ENABLED) Log.v(LOGTAG, "LoadListener.headers"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 288 | sendMessageInternal(obtainMessage(MSG_CONTENT_HEADERS, headers)); |
| 289 | } |
| 290 | |
| 291 | // Does the header parsing work on the WebCore thread. |
| 292 | private void handleHeaders(Headers headers) { |
| 293 | if (mCancelled) return; |
| 294 | mHeaders = headers; |
| 295 | mMimeType = ""; |
| 296 | mEncoding = ""; |
| 297 | |
| 298 | ArrayList<String> cookies = headers.getSetCookie(); |
| 299 | for (int i = 0; i < cookies.size(); ++i) { |
| 300 | CookieManager.getInstance().setCookie(mUri, cookies.get(i)); |
| 301 | } |
| 302 | |
| 303 | long contentLength = headers.getContentLength(); |
| 304 | if (contentLength != Headers.NO_CONTENT_LENGTH) { |
| 305 | mContentLength = contentLength; |
| 306 | } else { |
| 307 | mContentLength = 0; |
| 308 | } |
| 309 | |
| 310 | String contentType = headers.getContentType(); |
| 311 | if (contentType != null) { |
| 312 | parseContentTypeHeader(contentType); |
| 313 | |
| 314 | // If we have one of "generic" MIME types, try to deduce |
| 315 | // the right MIME type from the file extension (if any): |
| 316 | if (mMimeType.equalsIgnoreCase("text/plain") || |
| 317 | mMimeType.equalsIgnoreCase("application/octet-stream")) { |
| 318 | |
| 319 | String newMimeType = guessMimeTypeFromExtension(); |
| 320 | if (newMimeType != null) { |
| 321 | mMimeType = newMimeType; |
| 322 | } |
| 323 | } else if (mMimeType.equalsIgnoreCase("text/vnd.wap.wml")) { |
| 324 | // As we don't support wml, render it as plain text |
| 325 | mMimeType = "text/plain"; |
| 326 | } else { |
| 327 | // XXX: Until the servers send us either correct xhtml or |
| 328 | // text/html, treat application/xhtml+xml as text/html. |
| 329 | // It seems that xhtml+xml and vnd.wap.xhtml+xml mime |
| 330 | // subtypes are used interchangeably. So treat them the same. |
| 331 | if (mMimeType.equalsIgnoreCase("application/xhtml+xml") || |
| 332 | mMimeType.equals("application/vnd.wap.xhtml+xml")) { |
| 333 | mMimeType = "text/html"; |
| 334 | } |
| 335 | } |
| 336 | } else { |
| 337 | /* Often when servers respond with 304 Not Modified or a |
| 338 | Redirect, then they don't specify a MIMEType. When this |
| 339 | occurs, the function below is called. In the case of |
| 340 | 304 Not Modified, the cached headers are used rather |
| 341 | than the headers that are returned from the server. */ |
| 342 | guessMimeType(); |
| 343 | } |
| 344 | |
| 345 | // is it an authentication request? |
| 346 | boolean mustAuthenticate = (mStatusCode == HTTP_AUTH || |
| 347 | mStatusCode == HTTP_PROXY_AUTH); |
| 348 | // is it a proxy authentication request? |
| 349 | boolean isProxyAuthRequest = (mStatusCode == HTTP_PROXY_AUTH); |
| 350 | // is this authentication request due to a failed attempt to |
| 351 | // authenticate ealier? |
| 352 | mAuthFailed = false; |
| 353 | |
| 354 | // if we tried to authenticate ourselves last time |
| 355 | if (mAuthHeader != null) { |
| 356 | // we failed, if we must to authenticate again now and |
| 357 | // we have a proxy-ness match |
| 358 | mAuthFailed = (mustAuthenticate && |
| 359 | isProxyAuthRequest == mAuthHeader.isProxy()); |
| 360 | |
| 361 | // if we did NOT fail and last authentication request was a |
| 362 | // proxy-authentication request |
| 363 | if (!mAuthFailed && mAuthHeader.isProxy()) { |
| 364 | Network network = Network.getInstance(mContext); |
| 365 | // if we have a valid proxy set |
| 366 | if (network.isValidProxySet()) { |
| 367 | /* The proxy credentials can be read in the WebCore thread |
| 368 | */ |
| 369 | synchronized (network) { |
| 370 | // save authentication credentials for pre-emptive proxy |
| 371 | // authentication |
| 372 | network.setProxyUsername(mAuthHeader.getUsername()); |
| 373 | network.setProxyPassword(mAuthHeader.getPassword()); |
| 374 | } |
| 375 | } |
| 376 | } |
| 377 | } |
The Android Open Source Project | c39a6e0 | 2009-03-11 12:11:56 -0700 | [diff] [blame] | 378 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 379 | // it is only here that we can reset the last mAuthHeader object |
| 380 | // (if existed) and start a new one!!! |
| 381 | mAuthHeader = null; |
| 382 | if (mustAuthenticate) { |
| 383 | if (mStatusCode == HTTP_AUTH) { |
| 384 | mAuthHeader = parseAuthHeader( |
| 385 | headers.getWwwAuthenticate()); |
| 386 | } else { |
| 387 | mAuthHeader = parseAuthHeader( |
| 388 | headers.getProxyAuthenticate()); |
| 389 | // if successfully parsed the header |
| 390 | if (mAuthHeader != null) { |
| 391 | // mark the auth-header object as a proxy |
| 392 | mAuthHeader.setProxy(); |
| 393 | } |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | // Only create a cache file if the server has responded positively. |
| 398 | if ((mStatusCode == HTTP_OK || |
| 399 | mStatusCode == HTTP_FOUND || |
| 400 | mStatusCode == HTTP_MOVED_PERMANENTLY || |
| 401 | mStatusCode == HTTP_TEMPORARY_REDIRECT) && |
| 402 | mNativeLoader != 0) { |
| 403 | // Content arriving from a StreamLoader (eg File, Cache or Data) |
| 404 | // will not be cached as they have the header: |
| 405 | // cache-control: no-store |
| 406 | mCacheResult = CacheManager.createCacheFile(mUrl, mStatusCode, |
| 407 | headers, mMimeType, false); |
| 408 | if (mCacheResult != null) { |
| 409 | mCacheResult.encoding = mEncoding; |
| 410 | } |
| 411 | } |
| 412 | commitHeadersCheckRedirect(); |
| 413 | } |
| 414 | |
| 415 | /** |
| 416 | * @return True iff this loader is in the proxy-authenticate state. |
| 417 | */ |
| 418 | boolean proxyAuthenticate() { |
| 419 | if (mAuthHeader != null) { |
| 420 | return mAuthHeader.isProxy(); |
| 421 | } |
| 422 | |
| 423 | return false; |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | * Report the status of the response. |
| 428 | * TODO: Comments about each parameter. |
| 429 | * IMPORTANT: as this is called from network thread, can't call native |
| 430 | * directly |
| 431 | */ |
| 432 | public void status(int majorVersion, int minorVersion, |
| 433 | int code, /* Status-Code value */ String reasonPhrase) { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 434 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 435 | Log.v(LOGTAG, "LoadListener: from: " + mUrl |
| 436 | + " major: " + majorVersion |
| 437 | + " minor: " + minorVersion |
| 438 | + " code: " + code |
| 439 | + " reason: " + reasonPhrase); |
| 440 | } |
| 441 | HashMap status = new HashMap(); |
| 442 | status.put("major", majorVersion); |
| 443 | status.put("minor", minorVersion); |
| 444 | status.put("code", code); |
| 445 | status.put("reason", reasonPhrase); |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 446 | // New status means new data. Clear the old. |
| 447 | mDataBuilder.clear(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 448 | sendMessageInternal(obtainMessage(MSG_STATUS, status)); |
| 449 | } |
| 450 | |
| 451 | // Handle the status callback on the WebCore thread. |
| 452 | private void handleStatus(int major, int minor, int code, String reason) { |
| 453 | if (mCancelled) return; |
| 454 | |
| 455 | mStatusCode = code; |
| 456 | mStatusText = reason; |
| 457 | mPermanent = false; |
| 458 | } |
| 459 | |
| 460 | /** |
| 461 | * Implementation of certificate handler for EventHandler. |
| 462 | * Called every time a resource is loaded via a secure |
| 463 | * connection. In this context, can be called multiple |
| 464 | * times if we have redirects |
| 465 | * @param certificate The SSL certifcate |
| 466 | * IMPORTANT: as this is called from network thread, can't call native |
| 467 | * directly |
| 468 | */ |
| 469 | public void certificate(SslCertificate certificate) { |
| 470 | sendMessageInternal(obtainMessage(MSG_SSL_CERTIFICATE, certificate)); |
| 471 | } |
| 472 | |
| 473 | // Handle the certificate on the WebCore thread. |
| 474 | private void handleCertificate(SslCertificate certificate) { |
| 475 | // if this is the top-most main-frame page loader |
| 476 | if (mIsMainPageLoader) { |
| 477 | // update the browser frame (ie, the main frame) |
| 478 | mBrowserFrame.certificate(certificate); |
| 479 | } |
| 480 | } |
| 481 | |
| 482 | /** |
| 483 | * Implementation of error handler for EventHandler. |
| 484 | * Subclasses should call this method to have error fields set. |
| 485 | * @param id The error id described by EventHandler. |
| 486 | * @param description A string description of the error. |
| 487 | * IMPORTANT: as this is called from network thread, can't call native |
| 488 | * directly |
| 489 | */ |
| 490 | public void error(int id, String description) { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 491 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 492 | Log.v(LOGTAG, "LoadListener.error url:" + |
| 493 | url() + " id:" + id + " description:" + description); |
| 494 | } |
| 495 | sendMessageInternal(obtainMessage(MSG_CONTENT_ERROR, id, 0, description)); |
| 496 | } |
| 497 | |
| 498 | // Handle the error on the WebCore thread. |
| 499 | private void handleError(int id, String description) { |
| 500 | mErrorID = id; |
| 501 | mErrorDescription = description; |
| 502 | detachRequestHandle(); |
| 503 | notifyError(); |
| 504 | tearDown(); |
| 505 | } |
| 506 | |
| 507 | /** |
| 508 | * Add data to the internal collection of data. This function is used by |
| 509 | * the data: scheme, about: scheme and http/https schemes. |
| 510 | * @param data A byte array containing the content. |
| 511 | * @param length The length of data. |
| 512 | * IMPORTANT: as this is called from network thread, can't call native |
| 513 | * directly |
| 514 | * XXX: Unlike the other network thread methods, this method can do the |
| 515 | * work of decoding the data and appending it to the data builder because |
| 516 | * mDataBuilder is a thread-safe structure. |
| 517 | */ |
| 518 | public void data(byte[] data, int length) { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 519 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 520 | Log.v(LOGTAG, "LoadListener.data(): url: " + url()); |
| 521 | } |
| 522 | |
| 523 | // Decode base64 data |
| 524 | // Note: It's fine that we only decode base64 here and not in the other |
| 525 | // data call because the only caller of the stream version is not |
| 526 | // base64 encoded. |
| 527 | if ("base64".equalsIgnoreCase(mTransferEncoding)) { |
| 528 | if (length < data.length) { |
| 529 | byte[] trimmedData = new byte[length]; |
| 530 | System.arraycopy(data, 0, trimmedData, 0, length); |
| 531 | data = trimmedData; |
| 532 | } |
| 533 | data = Base64.decodeBase64(data); |
| 534 | length = data.length; |
| 535 | } |
| 536 | // Synchronize on mData because commitLoad may write mData to WebCore |
| 537 | // and we don't want to replace mData or mDataLength at the same time |
| 538 | // as a write. |
| 539 | boolean sendMessage = false; |
| 540 | synchronized (mDataBuilder) { |
| 541 | sendMessage = mDataBuilder.isEmpty(); |
| 542 | mDataBuilder.append(data, 0, length); |
| 543 | } |
| 544 | if (sendMessage) { |
| 545 | // Send a message whenever data comes in after a write to WebCore |
| 546 | sendMessageInternal(obtainMessage(MSG_CONTENT_DATA)); |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | /** |
| 551 | * Event handler's endData call. Send a message to the handler notifying |
| 552 | * them that the data has finished. |
| 553 | * IMPORTANT: as this is called from network thread, can't call native |
| 554 | * directly |
| 555 | */ |
| 556 | public void endData() { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 557 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 558 | Log.v(LOGTAG, "LoadListener.endData(): url: " + url()); |
| 559 | } |
| 560 | sendMessageInternal(obtainMessage(MSG_CONTENT_FINISHED)); |
| 561 | } |
| 562 | |
| 563 | // Handle the end of data. |
| 564 | private void handleEndData() { |
| 565 | if (mCancelled) return; |
| 566 | |
| 567 | switch (mStatusCode) { |
| 568 | case HTTP_MOVED_PERMANENTLY: |
| 569 | // 301 - permanent redirect |
| 570 | mPermanent = true; |
| 571 | case HTTP_FOUND: |
| 572 | case HTTP_SEE_OTHER: |
| 573 | case HTTP_TEMPORARY_REDIRECT: |
| 574 | // 301, 302, 303, and 307 - redirect |
| 575 | if (mStatusCode == HTTP_TEMPORARY_REDIRECT) { |
| 576 | if (mRequestHandle != null && |
| 577 | mRequestHandle.getMethod().equals("POST")) { |
| 578 | sendMessageInternal(obtainMessage( |
| 579 | MSG_LOCATION_CHANGED_REQUEST)); |
| 580 | } else if (mMethod != null && mMethod.equals("POST")) { |
| 581 | sendMessageInternal(obtainMessage( |
| 582 | MSG_LOCATION_CHANGED_REQUEST)); |
| 583 | } else { |
| 584 | sendMessageInternal(obtainMessage(MSG_LOCATION_CHANGED)); |
| 585 | } |
| 586 | } else { |
| 587 | sendMessageInternal(obtainMessage(MSG_LOCATION_CHANGED)); |
| 588 | } |
| 589 | return; |
| 590 | |
| 591 | case HTTP_AUTH: |
| 592 | case HTTP_PROXY_AUTH: |
| 593 | // According to rfc2616, the response for HTTP_AUTH must include |
| 594 | // WWW-Authenticate header field and the response for |
| 595 | // HTTP_PROXY_AUTH must include Proxy-Authenticate header field. |
| 596 | if (mAuthHeader != null && |
| 597 | (Network.getInstance(mContext).isValidProxySet() || |
| 598 | !mAuthHeader.isProxy())) { |
| 599 | Network.getInstance(mContext).handleAuthRequest(this); |
| 600 | return; |
| 601 | } |
| 602 | break; // use default |
| 603 | |
| 604 | case HTTP_NOT_MODIFIED: |
| 605 | // Server could send back NOT_MODIFIED even if we didn't |
| 606 | // ask for it, so make sure we have a valid CacheLoader |
| 607 | // before calling it. |
| 608 | if (mCacheLoader != null) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 609 | mCacheLoader.load(); |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 610 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 611 | Log.v(LOGTAG, "LoadListener cache load url=" + url()); |
| 612 | } |
| 613 | return; |
| 614 | } |
| 615 | break; // use default |
| 616 | |
| 617 | case HTTP_NOT_FOUND: |
| 618 | // Not an error, the server can send back content. |
| 619 | default: |
| 620 | break; |
| 621 | } |
| 622 | detachRequestHandle(); |
| 623 | tearDown(); |
| 624 | } |
| 625 | |
| 626 | /* This method is called from CacheLoader when the initial request is |
| 627 | * serviced by the Cache. */ |
| 628 | /* package */ void setCacheLoader(CacheLoader c) { |
| 629 | mCacheLoader = c; |
| 630 | } |
| 631 | |
| 632 | /** |
| 633 | * Check the cache for the current URL, and load it if it is valid. |
| 634 | * |
| 635 | * @param headers for the request |
| 636 | * @return true if cached response is used. |
| 637 | */ |
| 638 | boolean checkCache(Map<String, String> headers) { |
| 639 | // Get the cache file name for the current URL |
| 640 | CacheResult result = CacheManager.getCacheFile(url(), |
| 641 | headers); |
| 642 | |
| 643 | // Go ahead and set the cache loader to null in case the result is |
| 644 | // null. |
| 645 | mCacheLoader = null; |
| 646 | |
| 647 | if (result != null) { |
| 648 | // The contents of the cache may need to be revalidated so just |
| 649 | // remember the cache loader in the case that the server responds |
| 650 | // positively to the cached content. This is also used to detect if |
| 651 | // a redirect came from the cache. |
| 652 | mCacheLoader = new CacheLoader(this, result); |
| 653 | |
| 654 | // If I got a cachedUrl and the revalidation header was not |
| 655 | // added, then the cached content valid, we should use it. |
| 656 | if (!headers.containsKey( |
| 657 | CacheManager.HEADER_KEY_IFNONEMATCH) && |
| 658 | !headers.containsKey( |
| 659 | CacheManager.HEADER_KEY_IFMODIFIEDSINCE)) { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 660 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 661 | Log.v(LOGTAG, "FrameLoader: HTTP URL in cache " + |
| 662 | "and usable: " + url()); |
| 663 | } |
| 664 | // Load the cached file |
| 665 | mCacheLoader.load(); |
| 666 | return true; |
| 667 | } |
| 668 | } |
| 669 | return false; |
| 670 | } |
| 671 | |
| 672 | /** |
| 673 | * SSL certificate error callback. Handles SSL error(s) on the way up |
| 674 | * to the user. |
| 675 | * IMPORTANT: as this is called from network thread, can't call native |
| 676 | * directly |
| 677 | */ |
| 678 | public void handleSslErrorRequest(SslError error) { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 679 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 680 | Log.v(LOGTAG, |
| 681 | "LoadListener.handleSslErrorRequest(): url:" + url() + |
| 682 | " primary error: " + error.getPrimaryError() + |
| 683 | " certificate: " + error.getCertificate()); |
| 684 | } |
| 685 | sendMessageInternal(obtainMessage(MSG_SSL_ERROR, error)); |
| 686 | } |
| 687 | |
| 688 | // Handle the ssl error on the WebCore thread. |
| 689 | private void handleSslError(SslError error) { |
| 690 | if (!mCancelled) { |
| 691 | mSslError = error; |
| 692 | Network.getInstance(mContext).handleSslErrorRequest(this); |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | /** |
| 697 | * @return HTTP authentication realm or null if none. |
| 698 | */ |
| 699 | String realm() { |
| 700 | if (mAuthHeader == null) { |
| 701 | return null; |
| 702 | } else { |
| 703 | return mAuthHeader.getRealm(); |
| 704 | } |
| 705 | } |
| 706 | |
| 707 | /** |
| 708 | * Returns true iff an HTTP authentication problem has |
| 709 | * occured (credentials invalid). |
| 710 | */ |
| 711 | boolean authCredentialsInvalid() { |
| 712 | // if it is digest and the nonce is stale, we just |
| 713 | // resubmit with a new nonce |
| 714 | return (mAuthFailed && |
| 715 | !(mAuthHeader.isDigest() && mAuthHeader.getStale())); |
| 716 | } |
| 717 | |
| 718 | /** |
| 719 | * @return The last SSL error or null if there is none |
| 720 | */ |
| 721 | SslError sslError() { |
| 722 | return mSslError; |
| 723 | } |
| 724 | |
| 725 | /** |
| 726 | * Handles SSL error(s) on the way down from the user |
| 727 | * (the user has already provided their feedback). |
| 728 | */ |
| 729 | void handleSslErrorResponse(boolean proceed) { |
| 730 | if (mRequestHandle != null) { |
| 731 | mRequestHandle.handleSslErrorResponse(proceed); |
| 732 | } |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 733 | if (!proceed) { |
| 734 | // Commit whatever data we have and tear down the loader. |
| 735 | commitLoad(); |
| 736 | tearDown(); |
| 737 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 738 | } |
| 739 | |
| 740 | /** |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 741 | * Uses user-supplied credentials to restart a request. If the credentials |
| 742 | * are null, cancel the request. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 743 | */ |
| 744 | void handleAuthResponse(String username, String password) { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 745 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 746 | Log.v(LOGTAG, "LoadListener.handleAuthResponse: url: " + mUrl |
| 747 | + " username: " + username |
| 748 | + " password: " + password); |
| 749 | } |
| 750 | |
| 751 | // create and queue an authentication-response |
| 752 | if (username != null && password != null) { |
| 753 | if (mAuthHeader != null && mRequestHandle != null) { |
| 754 | mAuthHeader.setUsername(username); |
| 755 | mAuthHeader.setPassword(password); |
| 756 | |
| 757 | int scheme = mAuthHeader.getScheme(); |
| 758 | if (scheme == HttpAuthHeader.BASIC) { |
| 759 | // create a basic response |
| 760 | boolean isProxy = mAuthHeader.isProxy(); |
| 761 | |
| 762 | mRequestHandle.setupBasicAuthResponse(isProxy, |
| 763 | username, password); |
| 764 | } else { |
| 765 | if (scheme == HttpAuthHeader.DIGEST) { |
| 766 | // create a digest response |
| 767 | boolean isProxy = mAuthHeader.isProxy(); |
| 768 | |
| 769 | String realm = mAuthHeader.getRealm(); |
| 770 | String nonce = mAuthHeader.getNonce(); |
| 771 | String qop = mAuthHeader.getQop(); |
| 772 | String algorithm = mAuthHeader.getAlgorithm(); |
| 773 | String opaque = mAuthHeader.getOpaque(); |
| 774 | |
| 775 | mRequestHandle.setupDigestAuthResponse |
| 776 | (isProxy, username, password, realm, |
| 777 | nonce, qop, algorithm, opaque); |
| 778 | } |
| 779 | } |
| 780 | } |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 781 | } else { |
| 782 | // Commit whatever data we have and tear down the loader. |
| 783 | commitLoad(); |
| 784 | tearDown(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 785 | } |
| 786 | } |
| 787 | |
| 788 | /** |
| 789 | * This is called when a request can be satisfied by the cache, however, |
| 790 | * the cache result could be a redirect. In this case we need to issue |
| 791 | * the network request. |
| 792 | * @param method |
| 793 | * @param headers |
| 794 | * @param postData |
| 795 | * @param isHighPriority |
| 796 | */ |
| 797 | void setRequestData(String method, Map<String, String> headers, |
| 798 | byte[] postData, boolean isHighPriority) { |
| 799 | mMethod = method; |
| 800 | mRequestHeaders = headers; |
| 801 | mPostData = postData; |
| 802 | mIsHighPriority = isHighPriority; |
| 803 | } |
| 804 | |
| 805 | /** |
| 806 | * @return The current URL associated with this load. |
| 807 | */ |
| 808 | String url() { |
| 809 | return mUrl; |
| 810 | } |
| 811 | |
| 812 | /** |
| 813 | * @return The current WebAddress associated with this load. |
| 814 | */ |
| 815 | WebAddress getWebAddress() { |
| 816 | return mUri; |
| 817 | } |
| 818 | |
| 819 | /** |
| 820 | * @return URL hostname (current URL). |
| 821 | */ |
| 822 | String host() { |
| 823 | if (mUri != null) { |
| 824 | return mUri.mHost; |
| 825 | } |
| 826 | |
| 827 | return null; |
| 828 | } |
| 829 | |
| 830 | /** |
| 831 | * @return The original URL associated with this load. |
| 832 | */ |
| 833 | String originalUrl() { |
| 834 | if (mOriginalUrl != null) { |
| 835 | return mOriginalUrl; |
| 836 | } else { |
| 837 | return mUrl; |
| 838 | } |
| 839 | } |
| 840 | |
| 841 | void attachRequestHandle(RequestHandle requestHandle) { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 842 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 843 | Log.v(LOGTAG, "LoadListener.attachRequestHandle(): " + |
| 844 | "requestHandle: " + requestHandle); |
| 845 | } |
| 846 | mRequestHandle = requestHandle; |
| 847 | } |
| 848 | |
| 849 | void detachRequestHandle() { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 850 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 851 | Log.v(LOGTAG, "LoadListener.detachRequestHandle(): " + |
| 852 | "requestHandle: " + mRequestHandle); |
| 853 | } |
| 854 | mRequestHandle = null; |
| 855 | } |
| 856 | |
| 857 | /* |
| 858 | * This function is called from native WebCore code to |
| 859 | * notify this LoadListener that the content it is currently |
| 860 | * downloading should be saved to a file and not sent to |
| 861 | * WebCore. |
| 862 | */ |
| 863 | void downloadFile() { |
| 864 | // Setting the Cache Result to null ensures that this |
| 865 | // content is not added to the cache |
| 866 | mCacheResult = null; |
| 867 | |
| 868 | // Inform the client that they should download a file |
| 869 | mBrowserFrame.getCallbackProxy().onDownloadStart(url(), |
| 870 | mBrowserFrame.getUserAgentString(), |
| 871 | mHeaders.getContentDisposition(), |
| 872 | mMimeType, mContentLength); |
| 873 | |
| 874 | // Cancel the download. We need to stop the http load. |
| 875 | // The native loader object will get cleared by the call to |
| 876 | // cancel() but will also be cleared on the WebCore side |
| 877 | // when this function returns. |
| 878 | cancel(); |
| 879 | } |
| 880 | |
| 881 | /* |
| 882 | * This function is called from native WebCore code to |
| 883 | * find out if the given URL is in the cache, and if it can |
| 884 | * be used. This is just for forward/back navigation to a POST |
| 885 | * URL. |
| 886 | */ |
| 887 | static boolean willLoadFromCache(String url) { |
| 888 | boolean inCache = CacheManager.getCacheFile(url, null) != null; |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 889 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 890 | Log.v(LOGTAG, "willLoadFromCache: " + url + " in cache: " + |
| 891 | inCache); |
| 892 | } |
| 893 | return inCache; |
| 894 | } |
| 895 | |
| 896 | /* |
| 897 | * Reset the cancel flag. This is used when we are resuming a stopped |
| 898 | * download. To suspend a download, we cancel it. It can also be cancelled |
| 899 | * when it has run out of disk space. In this situation, the download |
| 900 | * can be resumed. |
| 901 | */ |
| 902 | void resetCancel() { |
| 903 | mCancelled = false; |
| 904 | } |
| 905 | |
| 906 | String mimeType() { |
| 907 | return mMimeType; |
| 908 | } |
| 909 | |
| 910 | /* |
| 911 | * Return the size of the content being downloaded. This represents the |
| 912 | * full content size, even under the situation where the download has been |
| 913 | * resumed after interruption. |
| 914 | * |
| 915 | * @ return full content size |
| 916 | */ |
| 917 | long contentLength() { |
| 918 | return mContentLength; |
| 919 | } |
| 920 | |
| 921 | // Commit the headers if the status code is not a redirect. |
| 922 | private void commitHeadersCheckRedirect() { |
| 923 | if (mCancelled) return; |
| 924 | |
| 925 | // do not call webcore if it is redirect. According to the code in |
| 926 | // InspectorController::willSendRequest(), the response is only updated |
| 927 | // when it is not redirect. |
| 928 | if ((mStatusCode >= 301 && mStatusCode <= 303) || mStatusCode == 307) { |
| 929 | return; |
| 930 | } |
| 931 | |
| 932 | commitHeaders(); |
| 933 | } |
| 934 | |
| 935 | // This commits the headers without checking the response status code. |
| 936 | private void commitHeaders() { |
| 937 | // Commit the headers to WebCore |
| 938 | int nativeResponse = createNativeResponse(); |
| 939 | // The native code deletes the native response object. |
| 940 | nativeReceivedResponse(nativeResponse); |
| 941 | } |
| 942 | |
| 943 | /** |
| 944 | * Create a WebCore response object so that it can be used by |
| 945 | * nativeReceivedResponse or nativeRedirectedToUrl |
| 946 | * @return native response pointer |
| 947 | */ |
| 948 | private int createNativeResponse() { |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 949 | // If WebCore sends if-modified-since, mCacheLoader is null. If |
| 950 | // CacheManager sends it, mCacheLoader is not null. In this case, if the |
| 951 | // server responds with a 304, then we treat it like it was a 200 code |
| 952 | // and proceed with loading the file from the cache. |
| 953 | int statusCode = (mStatusCode == HTTP_NOT_MODIFIED && |
| 954 | mCacheLoader != null) ? HTTP_OK : mStatusCode; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 955 | // pass content-type content-length and content-encoding |
| 956 | final int nativeResponse = nativeCreateResponse( |
| 957 | mUrl, statusCode, mStatusText, |
| 958 | mMimeType, mContentLength, mEncoding, |
| 959 | mCacheResult == null ? 0 : mCacheResult.expires / 1000); |
| 960 | if (mHeaders != null) { |
| 961 | mHeaders.getHeaders(new Headers.HeaderCallback() { |
| 962 | public void header(String name, String value) { |
| 963 | nativeSetResponseHeader(nativeResponse, name, value); |
| 964 | } |
| 965 | }); |
| 966 | } |
| 967 | return nativeResponse; |
| 968 | } |
| 969 | |
| 970 | /** |
| 971 | * Commit the load. It should be ok to call repeatedly but only before |
| 972 | * tearDown is called. |
| 973 | */ |
| 974 | private void commitLoad() { |
| 975 | if (mCancelled) return; |
| 976 | |
| 977 | // Give the data to WebKit now |
| 978 | PerfChecker checker = new PerfChecker(); |
| 979 | ByteArrayBuilder.Chunk c; |
| 980 | while (true) { |
| 981 | c = mDataBuilder.getFirstChunk(); |
| 982 | if (c == null) break; |
| 983 | |
| 984 | if (c.mLength != 0) { |
| 985 | if (mCacheResult != null) { |
| 986 | try { |
| 987 | mCacheResult.outStream.write(c.mArray, 0, c.mLength); |
| 988 | } catch (IOException e) { |
| 989 | mCacheResult = null; |
| 990 | } |
| 991 | } |
| 992 | nativeAddData(c.mArray, c.mLength); |
| 993 | } |
| 994 | mDataBuilder.releaseChunk(c); |
| 995 | checker.responseAlert("res nativeAddData"); |
| 996 | } |
| 997 | } |
| 998 | |
| 999 | /** |
| 1000 | * Tear down the load. Subclasses should clean up any mess because of |
| 1001 | * cancellation or errors during the load. |
| 1002 | */ |
| 1003 | void tearDown() { |
| 1004 | if (mCacheResult != null) { |
| 1005 | if (getErrorID() == OK) { |
| 1006 | CacheManager.saveCacheFile(mUrl, mCacheResult); |
| 1007 | } |
| 1008 | |
| 1009 | // we need to reset mCacheResult to be null |
| 1010 | // resource loader's tearDown will call into WebCore's |
| 1011 | // nativeFinish, which in turn calls loader.cancel(). |
| 1012 | // If we don't reset mCacheFile, the file will be deleted. |
| 1013 | mCacheResult = null; |
| 1014 | } |
| 1015 | if (mNativeLoader != 0) { |
| 1016 | PerfChecker checker = new PerfChecker(); |
| 1017 | nativeFinished(); |
| 1018 | checker.responseAlert("res nativeFinished"); |
| 1019 | clearNativeLoader(); |
| 1020 | } |
| 1021 | } |
| 1022 | |
| 1023 | /** |
| 1024 | * Helper for getting the error ID. |
| 1025 | * @return errorID. |
| 1026 | */ |
| 1027 | private int getErrorID() { |
| 1028 | return mErrorID; |
| 1029 | } |
| 1030 | |
| 1031 | /** |
| 1032 | * Return the error description. |
| 1033 | * @return errorDescription. |
| 1034 | */ |
| 1035 | private String getErrorDescription() { |
| 1036 | return mErrorDescription; |
| 1037 | } |
| 1038 | |
| 1039 | /** |
| 1040 | * Notify the loader we encountered an error. |
| 1041 | */ |
| 1042 | void notifyError() { |
| 1043 | if (mNativeLoader != 0) { |
| 1044 | String description = getErrorDescription(); |
| 1045 | if (description == null) description = ""; |
| 1046 | nativeError(getErrorID(), description, url()); |
| 1047 | clearNativeLoader(); |
| 1048 | } |
| 1049 | } |
| 1050 | |
| 1051 | /** |
| 1052 | * Cancel a request. |
| 1053 | * FIXME: This will only work if the request has yet to be handled. This |
| 1054 | * is in no way guarenteed if requests are served in a separate thread. |
| 1055 | * It also causes major problems if cancel is called during an |
| 1056 | * EventHandler's method call. |
| 1057 | */ |
| 1058 | public void cancel() { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 1059 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1060 | if (mRequestHandle == null) { |
| 1061 | Log.v(LOGTAG, "LoadListener.cancel(): no requestHandle"); |
| 1062 | } else { |
| 1063 | Log.v(LOGTAG, "LoadListener.cancel()"); |
| 1064 | } |
| 1065 | } |
| 1066 | if (mRequestHandle != null) { |
| 1067 | mRequestHandle.cancel(); |
| 1068 | mRequestHandle = null; |
| 1069 | } |
| 1070 | |
| 1071 | mCacheResult = null; |
| 1072 | mCancelled = true; |
| 1073 | |
| 1074 | clearNativeLoader(); |
| 1075 | } |
| 1076 | |
| 1077 | // This count is transferred from RequestHandle to LoadListener when |
| 1078 | // loading from the cache so that we can detect redirect loops that switch |
| 1079 | // between the network and the cache. |
| 1080 | private int mCacheRedirectCount; |
| 1081 | |
| 1082 | /* |
| 1083 | * Perform the actual redirection. This involves setting up the new URL, |
| 1084 | * informing WebCore and then telling the Network to start loading again. |
| 1085 | */ |
| 1086 | private void doRedirect() { |
| 1087 | // as cancel() can cancel the load before doRedirect() is |
| 1088 | // called through handleMessage, needs to check to see if we |
| 1089 | // are canceled before proceed |
| 1090 | if (mCancelled) { |
| 1091 | return; |
| 1092 | } |
| 1093 | |
| 1094 | // Do the same check for a redirect loop that |
| 1095 | // RequestHandle.setupRedirect does. |
| 1096 | if (mCacheRedirectCount >= RequestHandle.MAX_REDIRECT_COUNT) { |
| 1097 | handleError(EventHandler.ERROR_REDIRECT_LOOP, mContext.getString( |
| 1098 | R.string.httpErrorRedirectLoop)); |
| 1099 | return; |
| 1100 | } |
| 1101 | |
| 1102 | String redirectTo = mHeaders.getLocation(); |
| 1103 | if (redirectTo != null) { |
| 1104 | int nativeResponse = createNativeResponse(); |
| 1105 | redirectTo = |
| 1106 | nativeRedirectedToUrl(mUrl, redirectTo, nativeResponse); |
| 1107 | // nativeRedirectedToUrl() may call cancel(), e.g. when redirect |
| 1108 | // from a https site to a http site, check mCancelled again |
| 1109 | if (mCancelled) { |
| 1110 | return; |
| 1111 | } |
| 1112 | if (redirectTo == null) { |
| 1113 | Log.d(LOGTAG, "Redirection failed for " |
| 1114 | + mHeaders.getLocation()); |
| 1115 | cancel(); |
| 1116 | return; |
| 1117 | } else if (!URLUtil.isNetworkUrl(redirectTo)) { |
| 1118 | final String text = mContext |
| 1119 | .getString(R.string.open_permission_deny) |
| 1120 | + "\n" + redirectTo; |
| 1121 | nativeAddData(text.getBytes(), text.length()); |
| 1122 | nativeFinished(); |
| 1123 | clearNativeLoader(); |
| 1124 | return; |
| 1125 | } |
| 1126 | |
| 1127 | if (mOriginalUrl == null) { |
| 1128 | mOriginalUrl = mUrl; |
| 1129 | } |
| 1130 | |
| 1131 | // Cache the redirect response |
| 1132 | if (mCacheResult != null) { |
| 1133 | if (getErrorID() == OK) { |
| 1134 | CacheManager.saveCacheFile(mUrl, mCacheResult); |
| 1135 | } |
| 1136 | mCacheResult = null; |
| 1137 | } |
| 1138 | |
The Android Open Source Project | 4df2423 | 2009-03-05 14:34:35 -0800 | [diff] [blame] | 1139 | // This will strip the anchor |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1140 | setUrl(redirectTo); |
| 1141 | |
| 1142 | // Redirect may be in the cache |
| 1143 | if (mRequestHeaders == null) { |
| 1144 | mRequestHeaders = new HashMap<String, String>(); |
| 1145 | } |
| 1146 | boolean fromCache = false; |
| 1147 | if (mCacheLoader != null) { |
| 1148 | // This is a redirect from the cache loader. Increment the |
| 1149 | // redirect count to avoid redirect loops. |
| 1150 | mCacheRedirectCount++; |
| 1151 | fromCache = true; |
| 1152 | } |
| 1153 | if (!checkCache(mRequestHeaders)) { |
| 1154 | // mRequestHandle can be null when the request was satisfied |
| 1155 | // by the cache, and the cache returned a redirect |
| 1156 | if (mRequestHandle != null) { |
The Android Open Source Project | 4df2423 | 2009-03-05 14:34:35 -0800 | [diff] [blame] | 1157 | mRequestHandle.setupRedirect(mUrl, mStatusCode, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1158 | mRequestHeaders); |
| 1159 | } else { |
| 1160 | // If the original request came from the cache, there is no |
| 1161 | // RequestHandle, we have to create a new one through |
| 1162 | // Network.requestURL. |
| 1163 | Network network = Network.getInstance(getContext()); |
| 1164 | if (!network.requestURL(mMethod, mRequestHeaders, |
| 1165 | mPostData, this, mIsHighPriority)) { |
| 1166 | // Signal a bad url error if we could not load the |
| 1167 | // redirection. |
| 1168 | handleError(EventHandler.ERROR_BAD_URL, |
| 1169 | mContext.getString(R.string.httpErrorBadUrl)); |
| 1170 | return; |
| 1171 | } |
| 1172 | } |
| 1173 | if (fromCache) { |
| 1174 | // If we are coming from a cache load, we need to transfer |
| 1175 | // the redirect count to the new (or old) RequestHandle to |
| 1176 | // keep the redirect count in sync. |
| 1177 | mRequestHandle.setRedirectCount(mCacheRedirectCount); |
| 1178 | } |
| 1179 | } else if (!fromCache) { |
| 1180 | // Switching from network to cache means we need to grab the |
| 1181 | // redirect count from the RequestHandle to keep the count in |
| 1182 | // sync. Add 1 to account for the current redirect. |
| 1183 | mCacheRedirectCount = mRequestHandle.getRedirectCount() + 1; |
| 1184 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1185 | } else { |
| 1186 | commitHeaders(); |
| 1187 | commitLoad(); |
| 1188 | tearDown(); |
| 1189 | } |
| 1190 | |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 1191 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1192 | Log.v(LOGTAG, "LoadListener.onRedirect(): redirect to: " + |
| 1193 | redirectTo); |
| 1194 | } |
| 1195 | } |
| 1196 | |
| 1197 | /** |
| 1198 | * Parses the content-type header. |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 1199 | * The first part only allows '-' if it follows x or X. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1200 | */ |
| 1201 | private static final Pattern CONTENT_TYPE_PATTERN = |
The Android Open Source Project | 1059253 | 2009-03-18 17:39:46 -0700 | [diff] [blame] | 1202 | Pattern.compile("^((?:[xX]-)?[a-zA-Z\\*]+/[\\w\\+\\*-]+[\\.[\\w\\+-]+]*)$"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1203 | |
| 1204 | private void parseContentTypeHeader(String contentType) { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 1205 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1206 | Log.v(LOGTAG, "LoadListener.parseContentTypeHeader: " + |
| 1207 | "contentType: " + contentType); |
| 1208 | } |
| 1209 | |
| 1210 | if (contentType != null) { |
| 1211 | int i = contentType.indexOf(';'); |
| 1212 | if (i >= 0) { |
| 1213 | mMimeType = contentType.substring(0, i); |
| 1214 | |
| 1215 | int j = contentType.indexOf('=', i); |
| 1216 | if (j > 0) { |
| 1217 | i = contentType.indexOf(';', j); |
| 1218 | if (i < j) { |
| 1219 | i = contentType.length(); |
| 1220 | } |
| 1221 | mEncoding = contentType.substring(j + 1, i); |
| 1222 | } else { |
| 1223 | mEncoding = contentType.substring(i + 1); |
| 1224 | } |
| 1225 | // Trim excess whitespace. |
| 1226 | mEncoding = mEncoding.trim(); |
| 1227 | |
| 1228 | if (i < contentType.length() - 1) { |
| 1229 | // for data: uri the mimeType and encoding have |
| 1230 | // the form image/jpeg;base64 or text/plain;charset=utf-8 |
| 1231 | // or text/html;charset=utf-8;base64 |
| 1232 | mTransferEncoding = contentType.substring(i + 1).trim(); |
| 1233 | } |
| 1234 | } else { |
| 1235 | mMimeType = contentType; |
| 1236 | } |
| 1237 | |
| 1238 | // Trim leading and trailing whitespace |
| 1239 | mMimeType = mMimeType.trim(); |
| 1240 | |
| 1241 | try { |
| 1242 | Matcher m = CONTENT_TYPE_PATTERN.matcher(mMimeType); |
| 1243 | if (m.find()) { |
| 1244 | mMimeType = m.group(1); |
| 1245 | } else { |
| 1246 | guessMimeType(); |
| 1247 | } |
| 1248 | } catch (IllegalStateException ex) { |
| 1249 | guessMimeType(); |
| 1250 | } |
| 1251 | } |
| 1252 | } |
| 1253 | |
| 1254 | /** |
| 1255 | * @return The HTTP-authentication object or null if there |
| 1256 | * is no supported scheme in the header. |
| 1257 | * If there are several valid schemes present, we pick the |
| 1258 | * strongest one. If there are several schemes of the same |
| 1259 | * strength, we pick the one that comes first. |
| 1260 | */ |
| 1261 | private HttpAuthHeader parseAuthHeader(String header) { |
| 1262 | if (header != null) { |
| 1263 | int posMax = 256; |
| 1264 | int posLen = 0; |
| 1265 | int[] pos = new int [posMax]; |
| 1266 | |
| 1267 | int headerLen = header.length(); |
| 1268 | if (headerLen > 0) { |
| 1269 | // first, we find all unquoted instances of 'Basic' and 'Digest' |
| 1270 | boolean quoted = false; |
| 1271 | for (int i = 0; i < headerLen && posLen < posMax; ++i) { |
| 1272 | if (header.charAt(i) == '\"') { |
| 1273 | quoted = !quoted; |
| 1274 | } else { |
| 1275 | if (!quoted) { |
| 1276 | if (header.regionMatches(true, i, |
| 1277 | HttpAuthHeader.BASIC_TOKEN, 0, |
| 1278 | HttpAuthHeader.BASIC_TOKEN.length())) { |
| 1279 | pos[posLen++] = i; |
| 1280 | continue; |
| 1281 | } |
| 1282 | |
| 1283 | if (header.regionMatches(true, i, |
| 1284 | HttpAuthHeader.DIGEST_TOKEN, 0, |
| 1285 | HttpAuthHeader.DIGEST_TOKEN.length())) { |
| 1286 | pos[posLen++] = i; |
| 1287 | continue; |
| 1288 | } |
| 1289 | } |
| 1290 | } |
| 1291 | } |
| 1292 | } |
| 1293 | |
| 1294 | if (posLen > 0) { |
| 1295 | // consider all digest schemes first (if any) |
| 1296 | for (int i = 0; i < posLen; i++) { |
| 1297 | if (header.regionMatches(true, pos[i], |
| 1298 | HttpAuthHeader.DIGEST_TOKEN, 0, |
| 1299 | HttpAuthHeader.DIGEST_TOKEN.length())) { |
| 1300 | String sub = header.substring(pos[i], |
| 1301 | (i + 1 < posLen ? pos[i + 1] : headerLen)); |
| 1302 | |
| 1303 | HttpAuthHeader rval = new HttpAuthHeader(sub); |
| 1304 | if (rval.isSupportedScheme()) { |
| 1305 | // take the first match |
| 1306 | return rval; |
| 1307 | } |
| 1308 | } |
| 1309 | } |
| 1310 | |
| 1311 | // ...then consider all basic schemes (if any) |
| 1312 | for (int i = 0; i < posLen; i++) { |
| 1313 | if (header.regionMatches(true, pos[i], |
| 1314 | HttpAuthHeader.BASIC_TOKEN, 0, |
| 1315 | HttpAuthHeader.BASIC_TOKEN.length())) { |
| 1316 | String sub = header.substring(pos[i], |
| 1317 | (i + 1 < posLen ? pos[i + 1] : headerLen)); |
| 1318 | |
| 1319 | HttpAuthHeader rval = new HttpAuthHeader(sub); |
| 1320 | if (rval.isSupportedScheme()) { |
| 1321 | // take the first match |
| 1322 | return rval; |
| 1323 | } |
| 1324 | } |
| 1325 | } |
| 1326 | } |
| 1327 | } |
| 1328 | |
| 1329 | return null; |
| 1330 | } |
| 1331 | |
| 1332 | /** |
| 1333 | * If the content is a redirect or not modified we should not send |
| 1334 | * any data into WebCore as that will cause it create a document with |
| 1335 | * the data, then when we try to provide the real content, it will assert. |
| 1336 | * |
| 1337 | * @return True iff the callback should be ignored. |
| 1338 | */ |
| 1339 | private boolean ignoreCallbacks() { |
| 1340 | return (mCancelled || mAuthHeader != null || |
| 1341 | (mStatusCode > 300 && mStatusCode < 400)); |
| 1342 | } |
| 1343 | |
| 1344 | /** |
| 1345 | * Sets the current URL associated with this load. |
| 1346 | */ |
| 1347 | void setUrl(String url) { |
| 1348 | if (url != null) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1349 | mUri = null; |
The Android Open Source Project | 4df2423 | 2009-03-05 14:34:35 -0800 | [diff] [blame] | 1350 | if (URLUtil.isNetworkUrl(url)) { |
| 1351 | mUrl = URLUtil.stripAnchor(url); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1352 | try { |
| 1353 | mUri = new WebAddress(mUrl); |
| 1354 | } catch (ParseException e) { |
| 1355 | e.printStackTrace(); |
| 1356 | } |
The Android Open Source Project | 4df2423 | 2009-03-05 14:34:35 -0800 | [diff] [blame] | 1357 | } else { |
| 1358 | mUrl = url; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1359 | } |
| 1360 | } |
| 1361 | } |
| 1362 | |
| 1363 | /** |
| 1364 | * Guesses MIME type if one was not specified. Defaults to 'text/html'. In |
| 1365 | * addition, tries to guess the MIME type based on the extension. |
| 1366 | * |
| 1367 | */ |
| 1368 | private void guessMimeType() { |
| 1369 | // Data urls must have a valid mime type or a blank string for the mime |
| 1370 | // type (implying text/plain). |
| 1371 | if (URLUtil.isDataUrl(mUrl) && mMimeType.length() != 0) { |
| 1372 | cancel(); |
| 1373 | final String text = mContext.getString(R.string.httpErrorBadUrl); |
| 1374 | handleError(EventHandler.ERROR_BAD_URL, text); |
| 1375 | } else { |
| 1376 | // Note: This is ok because this is used only for the main content |
| 1377 | // of frames. If no content-type was specified, it is fine to |
| 1378 | // default to text/html. |
| 1379 | mMimeType = "text/html"; |
| 1380 | String newMimeType = guessMimeTypeFromExtension(); |
| 1381 | if (newMimeType != null) { |
| 1382 | mMimeType = newMimeType; |
| 1383 | } |
| 1384 | } |
| 1385 | } |
| 1386 | |
| 1387 | /** |
| 1388 | * guess MIME type based on the file extension. |
| 1389 | */ |
| 1390 | private String guessMimeTypeFromExtension() { |
| 1391 | // PENDING: need to normalize url |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 1392 | if (WebView.LOGV_ENABLED) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1393 | Log.v(LOGTAG, "guessMimeTypeFromExtension: mURL = " + mUrl); |
| 1394 | } |
| 1395 | |
| 1396 | String mimeType = |
| 1397 | MimeTypeMap.getSingleton().getMimeTypeFromExtension( |
| 1398 | MimeTypeMap.getFileExtensionFromUrl(mUrl)); |
| 1399 | |
| 1400 | if (mimeType != null) { |
| 1401 | // XXX: Until the servers send us either correct xhtml or |
| 1402 | // text/html, treat application/xhtml+xml as text/html. |
| 1403 | if (mimeType.equals("application/xhtml+xml")) { |
| 1404 | mimeType = "text/html"; |
| 1405 | } |
| 1406 | } |
| 1407 | |
| 1408 | return mimeType; |
| 1409 | } |
| 1410 | |
| 1411 | /** |
| 1412 | * Either send a message to ourselves or queue the message if this is a |
| 1413 | * synchronous load. |
| 1414 | */ |
| 1415 | private void sendMessageInternal(Message msg) { |
| 1416 | if (mSynchronous) { |
| 1417 | mMessageQueue.add(msg); |
| 1418 | } else { |
| 1419 | sendMessage(msg); |
| 1420 | } |
| 1421 | } |
| 1422 | |
| 1423 | /** |
| 1424 | * Cycle through our messages for synchronous loads. |
| 1425 | */ |
| 1426 | /* package */ void loadSynchronousMessages() { |
Dave Bort | 42bc2ff | 2009-04-13 15:07:51 -0700 | [diff] [blame] | 1427 | if (WebView.DEBUG && !mSynchronous) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1428 | throw new AssertionError(); |
| 1429 | } |
| 1430 | // Note: this can be called twice if it is a synchronous network load, |
| 1431 | // and there is a cache, but it needs to go to network to validate. If |
| 1432 | // validation succeed, the CacheLoader is used so this is first called |
| 1433 | // from http thread. Then it is called again from WebViewCore thread |
| 1434 | // after the load is completed. So make sure the queue is cleared but |
| 1435 | // don't set it to null. |
| 1436 | for (int size = mMessageQueue.size(); size > 0; size--) { |
| 1437 | handleMessage(mMessageQueue.remove(0)); |
| 1438 | } |
| 1439 | } |
| 1440 | |
| 1441 | //========================================================================= |
| 1442 | // native functions |
| 1443 | //========================================================================= |
| 1444 | |
| 1445 | /** |
| 1446 | * Create a new native response object. |
| 1447 | * @param url The url of the resource. |
| 1448 | * @param statusCode The HTTP status code. |
| 1449 | * @param statusText The HTTP status text. |
| 1450 | * @param mimeType HTTP content-type. |
| 1451 | * @param expectedLength An estimate of the content length or the length |
| 1452 | * given by the server. |
| 1453 | * @param encoding HTTP encoding. |
| 1454 | * @param expireTime HTTP expires converted to seconds since the epoch. |
| 1455 | * @return The native response pointer. |
| 1456 | */ |
| 1457 | private native int nativeCreateResponse(String url, int statusCode, |
| 1458 | String statusText, String mimeType, long expectedLength, |
| 1459 | String encoding, long expireTime); |
| 1460 | |
| 1461 | /** |
| 1462 | * Add a response header to the native object. |
| 1463 | * @param nativeResponse The native pointer. |
| 1464 | * @param key String key. |
| 1465 | * @param val String value. |
| 1466 | */ |
| 1467 | private native void nativeSetResponseHeader(int nativeResponse, String key, |
| 1468 | String val); |
| 1469 | |
| 1470 | /** |
| 1471 | * Dispatch the response. |
| 1472 | * @param nativeResponse The native pointer. |
| 1473 | */ |
| 1474 | private native void nativeReceivedResponse(int nativeResponse); |
| 1475 | |
| 1476 | /** |
| 1477 | * Add data to the loader. |
| 1478 | * @param data Byte array of data. |
| 1479 | * @param length Number of objects in data. |
| 1480 | */ |
| 1481 | private native void nativeAddData(byte[] data, int length); |
| 1482 | |
| 1483 | /** |
| 1484 | * Tell the loader it has finished. |
| 1485 | */ |
| 1486 | private native void nativeFinished(); |
| 1487 | |
| 1488 | /** |
| 1489 | * tell the loader to redirect |
| 1490 | * @param baseUrl The base url. |
| 1491 | * @param redirectTo The url to redirect to. |
| 1492 | * @param nativeResponse The native pointer. |
| 1493 | * @return The new url that the resource redirected to. |
| 1494 | */ |
| 1495 | private native String nativeRedirectedToUrl(String baseUrl, |
| 1496 | String redirectTo, int nativeResponse); |
| 1497 | |
| 1498 | /** |
| 1499 | * Tell the loader there is error |
| 1500 | * @param id |
| 1501 | * @param desc |
| 1502 | * @param failingUrl The url that failed. |
| 1503 | */ |
| 1504 | private native void nativeError(int id, String desc, String failingUrl); |
| 1505 | |
| 1506 | } |