DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "DownloadPlatform.h"
#include "nsAutoPtr.h"
#include "nsNetUtil.h"
#include "nsString.h"
#include "nsINestedURI.h"
#include "nsIProtocolHandler.h"
#include "nsIURI.h"
#include "nsIFile.h"
#include "nsIObserverService.h"
#include "nsISupportsPrimitives.h"
#include "nsDirectoryServiceDefs.h"

#include "mozilla/Preferences.h"
#include "mozilla/Services.h"

#define PREF_BDM_ADDTORECENTDOCS "browser.download.manager.addToRecentDocs"

#ifdef XP_WIN
#include <shlobj.h>
#include <urlmon.h>
#include "nsILocalFileWin.h"
#endif

#ifdef XP_MACOSX
#include <CoreFoundation/CoreFoundation.h>
#include "../../../xpcom/io/CocoaFileUtils.h"
#endif

#ifdef MOZ_WIDGET_ANDROID
#include "FennecJNIWrappers.h"
#endif

#ifdef MOZ_WIDGET_GTK
#include <gtk/gtk.h>
#endif

using namespace mozilla;

DownloadPlatform *DownloadPlatform::gDownloadPlatformService = nullptr;

NS_IMPL_ISUPPORTS(DownloadPlatform, mozIDownloadPlatform);

DownloadPlatform* DownloadPlatform::GetDownloadPlatform()
{
  if (!gDownloadPlatformService) {
    gDownloadPlatformService = new DownloadPlatform();
  }

  NS_ADDREF(gDownloadPlatformService);

#if defined(MOZ_WIDGET_GTK)
  g_type_init();
#endif

  return gDownloadPlatformService;
}

#ifdef MOZ_WIDGET_GTK
static void gio_set_metadata_done(GObject *source_obj, GAsyncResult *res, gpointer user_data)
{
  GError *err = nullptr;
  g_file_set_attributes_finish(G_FILE(source_obj), res, nullptr, &err);
  if (err) {
#ifdef DEBUG
    NS_DebugBreak(NS_DEBUG_WARNING, "Set file metadata failed: ", err->message, __FILE__, __LINE__);
#endif
    g_error_free(err);
  }
}
#endif

#ifdef XP_MACOSX
// Caller is responsible for freeing any result (CF Create Rule)
CFURLRef CreateCFURLFromNSIURI(nsIURI *aURI) {
  nsAutoCString spec;
  if (aURI) {
    aURI->GetSpec(spec);
  }

  CFStringRef urlStr = ::CFStringCreateWithCString(kCFAllocatorDefault,
                                                   spec.get(),
                                                   kCFStringEncodingUTF8);
  if (!urlStr) {
    return NULL;
  }

  CFURLRef url = ::CFURLCreateWithString(kCFAllocatorDefault,
                                         urlStr,
                                         NULL);

  ::CFRelease(urlStr);

  return url;
}
#endif

nsresult DownloadPlatform::DownloadDone(nsIURI* aSource, nsIURI* aReferrer, nsIFile* aTarget,
                                        const nsACString& aContentType, bool aIsPrivate)
{
#if defined(XP_WIN) || defined(XP_MACOSX) || defined(MOZ_WIDGET_ANDROID) \
 || defined(MOZ_WIDGET_GTK)

  nsAutoString path;
  if (aTarget && NS_SUCCEEDED(aTarget->GetPath(path))) {
#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK) || defined(MOZ_WIDGET_ANDROID)
    // On Windows and Gtk, add the download to the system's "recent documents"
    // list, with a pref to disable.
    {
      bool addToRecentDocs = Preferences::GetBool(PREF_BDM_ADDTORECENTDOCS);
#ifdef MOZ_WIDGET_ANDROID
      if (jni::IsFennec() && addToRecentDocs) {
        java::DownloadsIntegration::ScanMedia(path, aContentType);
      }
#else
      if (addToRecentDocs && !aIsPrivate) {
#ifdef XP_WIN
        ::SHAddToRecentDocs(SHARD_PATHW, path.get());
#elif defined(MOZ_WIDGET_GTK)
        GtkRecentManager* manager = gtk_recent_manager_get_default();

        gchar* uri = g_filename_to_uri(NS_ConvertUTF16toUTF8(path).get(),
                                       nullptr, nullptr);
        if (uri) {
          gtk_recent_manager_add_item(manager, uri);
          g_free(uri);
        }
#endif
      }
#endif
#ifdef MOZ_WIDGET_GTK
      // Use GIO to store the source URI for later display in the file manager.
      GFile* gio_file = g_file_new_for_path(NS_ConvertUTF16toUTF8(path).get());
      nsCString source_uri;
      nsresult rv = aSource->GetSpec(source_uri);
      NS_ENSURE_SUCCESS(rv, rv);
      GFileInfo *file_info = g_file_info_new();
      g_file_info_set_attribute_string(file_info, "metadata::download-uri", source_uri.get());
      g_file_set_attributes_async(gio_file,
                                  file_info,
                                  G_FILE_QUERY_INFO_NONE,
                                  G_PRIORITY_DEFAULT,
                                  nullptr, gio_set_metadata_done, nullptr);
      g_object_unref(file_info);
      g_object_unref(gio_file);
#endif
    }
#endif

#ifdef XP_MACOSX
    // On OS X, make the downloads stack bounce.
    CFStringRef observedObject = ::CFStringCreateWithCString(kCFAllocatorDefault,
                                             NS_ConvertUTF16toUTF8(path).get(),
                                             kCFStringEncodingUTF8);
    CFNotificationCenterRef center = ::CFNotificationCenterGetDistributedCenter();
    ::CFNotificationCenterPostNotification(center, CFSTR("com.apple.DownloadFileFinished"),
                                           observedObject, nullptr, TRUE);
    ::CFRelease(observedObject);

    // Add OS X origin and referrer file metadata
    CFStringRef pathCFStr = NULL;
    if (!path.IsEmpty()) {
      pathCFStr = ::CFStringCreateWithCharacters(kCFAllocatorDefault,
                                                 (const UniChar*)path.get(),
                                                 path.Length());
    }
    if (pathCFStr && !aIsPrivate) {
      bool isFromWeb = IsURLPossiblyFromWeb(aSource);

      CFURLRef sourceCFURL = CreateCFURLFromNSIURI(aSource);
      CFURLRef referrerCFURL = CreateCFURLFromNSIURI(aReferrer);

      CocoaFileUtils::AddOriginMetadataToFile(pathCFStr,
                                              sourceCFURL,
                                              referrerCFURL);
      CocoaFileUtils::AddQuarantineMetadataToFile(pathCFStr,
                                                  sourceCFURL,
                                                  referrerCFURL,
                                                  isFromWeb);

      ::CFRelease(pathCFStr);
      if (sourceCFURL) {
        ::CFRelease(sourceCFURL);
      }
      if (referrerCFURL) {
        ::CFRelease(referrerCFURL);
      }
    }
#endif
  }

#endif

  return NS_OK;
}

nsresult DownloadPlatform::MapUrlToZone(const nsAString& aURL,
                                        uint32_t* aZone)
{
#ifdef XP_WIN
  RefPtr<IInternetSecurityManager> inetSecMgr;
  if (FAILED(CoCreateInstance(CLSID_InternetSecurityManager, NULL,
                              CLSCTX_ALL, IID_IInternetSecurityManager,
                              getter_AddRefs(inetSecMgr)))) {
    return NS_ERROR_UNEXPECTED;
  }

  DWORD zone;
  if (inetSecMgr->MapUrlToZone(PromiseFlatString(aURL).get(),
                               &zone, 0) != S_OK) {
    return NS_ERROR_UNEXPECTED;
  } else {
    *aZone = zone;
  }

  return NS_OK;
#else
  return NS_ERROR_NOT_IMPLEMENTED;
#endif
}

// Check if a URI is likely to be web-based, by checking its URI flags.
// If in doubt (e.g. if anything fails during the check) claims things
// are from the web.
bool DownloadPlatform::IsURLPossiblyFromWeb(nsIURI* aURI)
{
  nsCOMPtr<nsIIOService> ios = do_GetIOService();
  nsCOMPtr<nsIURI> uri = aURI;
  if (!ios) {
    return true;
  }

  while (uri) {
    // We're not using nsIIOService::ProtocolHasFlags because it doesn't
    // take per-URI flags into account. We're also not using
    // NS_URIChainHasFlags because we're checking for *any* of 3 flags
    // to be present on *all* of the nested URIs, which it can't do.
    nsAutoCString scheme;
    nsresult rv = uri->GetScheme(scheme);
    if (NS_FAILED(rv)) {
      return true;
    }
    nsCOMPtr<nsIProtocolHandler> ph;
    rv = ios->GetProtocolHandler(scheme.get(), getter_AddRefs(ph));
    if (NS_FAILED(rv)) {
      return true;
    }
    uint32_t flags;
    rv = ph->DoGetProtocolFlags(uri, &flags);
    if (NS_FAILED(rv)) {
      return true;
    }
    // If not dangerous to load, not a UI resource and not a local file,
    // assume this is from the web:
    if (!(flags & nsIProtocolHandler::URI_DANGEROUS_TO_LOAD) &&
        !(flags & nsIProtocolHandler::URI_IS_UI_RESOURCE) &&
        !(flags & nsIProtocolHandler::URI_IS_LOCAL_FILE)) {
      return true;
    }
    // Otherwise, check if the URI is nested, and if so go through
    // the loop again:
    nsCOMPtr<nsINestedURI> nestedURI = do_QueryInterface(uri);
    uri = nullptr;
    if (nestedURI) {
      rv = nestedURI->GetInnerURI(getter_AddRefs(uri));
      if (NS_FAILED(rv)) {
        return true;
      }
    }
  }
  return false;
}