content/public/common/url_utils.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_PUBLIC_COMMON_URL_UTILS_H_
   6 #define CONTENT_PUBLIC_COMMON_URL_UTILS_H_
   7
   8 #include <stddef.h>         // For size_t
   9
  10 #include "build/build_config.h"
  11 #include "content/common/content_export.h"
  12
  13 class GURL;
  14
  15 namespace content {
  16
  17 // Null terminated list of schemes that are savable. This function can be
  18 // invoked on any thread.
  19 CONTENT_EXPORT const char* const* GetSavableSchemes();
  20
  21 // Returns true if the url has a scheme for WebUI.  See also
  22 // WebUIControllerFactory::UseWebUIForURL in the browser process.
  23 CONTENT_EXPORT bool HasWebUIScheme(const GURL& url);
  24
  25 // Check whether we can do the saving page operation for the specified URL.
  26 CONTENT_EXPORT bool IsSavableURL(const GURL& url);
  27
  28 #if defined(OS_ANDROID)
  29 // Set a new max size for URL's that we are willing to accept in the browser
  30 // process.
  31 // Should not be used except by Android WebView for backwards compatibility.
  32 // Should be called early in start up before forking child processes.
  33 //
  34 // This is for supporting legacy android apps, android webview needs to
  35 // support loading long data urls. In chrome, the url length is limited to 2M to
  36 // prevent renderer process DOS-ing the browser process. So only for android
  37 // webview, increase the limit to 20M, which is a large enough value to satisfy
  38 // legacy app compatibility requirements.
  39 CONTENT_EXPORT void SetMaxURLChars(size_t max_chars);
  40 #endif
  41
  42 // The maximum number of characters in the URL that we're willing to accept
  43 // in the browser process. It is set low enough to avoid damage to the browser
  44 // but high enough that a web site can abuse location.hash for a little storage.
  45 // We have different values for "max accepted" and "max displayed" because
  46 // a data: URI may be legitimately massive, but the full URI would kill all
  47 // known operating systems if you dropped it into a UI control.
  48 CONTENT_EXPORT size_t GetMaxURLChars();
  49
  50 }  // namespace content
  51
  52 #endif  // CONTENT_PUBLIC_COMMON_URL_UTILS_H_