Ejemplo n.º 1
0
/**
 * Create file stream and set mime type for channel
 * @param info file info used to determine mime type
 * @return NS_OK when file stream created successfuly, error code otherwise
 */
nsresult
nsGIOInputStream::DoOpenFile(GFileInfo *info)
{
  GError *error = nullptr;

  mStream = g_file_read(mHandle, nullptr, &error);
  if (!mStream) {
    nsresult rv = MapGIOResult(error);
    g_warning("Cannot read from file: %s", error->message);
    g_error_free(error);
    return rv;
  }

  const char * content_type = g_file_info_get_content_type(info);
  if (content_type) {
    char *mime_type = g_content_type_get_mime_type(content_type);
    if (mime_type) {
      if (strcmp(mime_type, APPLICATION_OCTET_STREAM) != 0) {
        SetContentTypeOfChannel(mime_type);
      }
      g_free(mime_type);
    }
  } else {
    g_warning("Missing content type.");
  }

  mBytesRemaining = g_file_info_get_size(info);
  // Update the content length attribute on the channel.  We do this
  // synchronously without proxying.  This hack is not as bad as it looks!
  mChannel->SetContentLength(mBytesRemaining);

  return NS_OK;
}
Ejemplo n.º 2
0
/**
 * Create list of infos about objects in opened directory
 * Return: NS_OK when list obtained, otherwise error code according
 * to failed operation.
 */
nsresult
nsGIOInputStream::DoOpenDirectory()
{
  GError *error = nullptr;

  GFileEnumerator *f_enum = g_file_enumerate_children(mHandle,
                                                      "standard::*,time::*",
                                                      G_FILE_QUERY_INFO_NONE,
                                                      nullptr,
                                                      &error);
  if (!f_enum) {
    nsresult rv = MapGIOResult(error);
    g_warning("Cannot read from directory: %s", error->message);
    g_error_free(error);
    return rv;
  }
  // fill list of file infos
  GFileInfo *info = g_file_enumerator_next_file(f_enum, nullptr, &error);
  while (info) {
    mDirList = g_list_append(mDirList, info);
    info = g_file_enumerator_next_file(f_enum, nullptr, &error);
  }
  g_object_unref(f_enum);
  if (error) {
    g_warning("Error reading directory content: %s", error->message);
    nsresult rv = MapGIOResult(error);
    g_error_free(error);
    return rv;
  }
  mDirOpen = true;

  // Sort list of file infos by using FileInfoComparator function
  mDirList = g_list_sort(mDirList, FileInfoComparator);
  mDirListPtr = mDirList;

  // Write base URL (make sure it ends with a '/')
  mDirBuf.AppendLiteral("300: ");
  mDirBuf.Append(mSpec);
  if (mSpec.get()[mSpec.Length() - 1] != '/')
    mDirBuf.Append('/');
  mDirBuf.Append('\n');

  // Write column names
  mDirBuf.AppendLiteral("200: filename content-length last-modified file-type\n");

  // Write charset (assume UTF-8)
  // XXX is this correct?
  mDirBuf.AppendLiteral("301: UTF-8\n");
  SetContentTypeOfChannel(APPLICATION_HTTP_INDEX_FORMAT);
  return NS_OK;
}
GnomeVFSResult
nsGnomeVFSInputStream::DoOpen()
{
  GnomeVFSResult rv;

  NS_ASSERTION(mHandle == nsnull, "already open");

  // Push a callback handler on the stack for this thread, so we can intercept
  // authentication requests from GnomeVFS.  We'll use the channel to get a
  // nsIAuthPrompt instance.

  gnome_vfs_module_callback_push(GNOME_VFS_MODULE_CALLBACK_AUTHENTICATION,
                                 AuthCallback, mChannel, NULL);

  // Query the mime type first (this could return NULL). 
  //
  // XXX We need to do this up-front in order to determine how to open the URI.
  //     Unfortunately, the error code GNOME_VFS_ERROR_IS_DIRECTORY is not
  //     always returned by gnome_vfs_open when we pass it a URI to a directory!
  //     Otherwise, we could have used that as a way to failover to opening the
  //     URI as a directory.  Also, it would have been ideal if
  //     gnome_vfs_get_file_info_from_handle were actually implemented by the
  //     smb:// module, since that would have allowed us to potentially save a
  //     round trip to the server to discover the mime type of the document in
  //     the case where gnome_vfs_open would have been used.  (Oh well!  /me
  //     throws hands up in the air and moves on...)

  GnomeVFSFileInfo info = {0};
  rv = gnome_vfs_get_file_info(mSpec.get(), &info, GnomeVFSFileInfoOptions(
                               GNOME_VFS_FILE_INFO_DEFAULT |
                               GNOME_VFS_FILE_INFO_FOLLOW_LINKS));
  if (rv == GNOME_VFS_OK)
  {
    if (info.type == GNOME_VFS_FILE_TYPE_DIRECTORY)
    {
      rv = gnome_vfs_directory_list_load(&mDirList, mSpec.get(),
                                         GNOME_VFS_FILE_INFO_DEFAULT);

      LOG(("gnomevfs: gnome_vfs_directory_list_load returned %d (%s) [spec=\"%s\"]\n",
          rv, gnome_vfs_result_to_string(rv), mSpec.get()));
    }
    else
    {
      rv = gnome_vfs_open(&mHandle, mSpec.get(), GNOME_VFS_OPEN_READ);

      LOG(("gnomevfs: gnome_vfs_open returned %d (%s) [spec=\"%s\"]\n",
          rv, gnome_vfs_result_to_string(rv), mSpec.get()));
    }
  }

  gnome_vfs_module_callback_pop(GNOME_VFS_MODULE_CALLBACK_AUTHENTICATION);

  if (rv == GNOME_VFS_OK)
  {
    if (mHandle)
    {
      // Here we set the content type of the channel to the value of the mime
      // type determined by GnomeVFS.  However, if GnomeVFS is telling us that
      // the document is binary, we'll ignore that and keep the channel's
      // content type unspecified.  That will enable our content type sniffing
      // algorithms.  This should provide more consistent mime type handling.

      if (info.mime_type && (strcmp(info.mime_type, APPLICATION_OCTET_STREAM) != 0))
        SetContentTypeOfChannel(info.mime_type);

      mBytesRemaining = info.size;

      // Update the content length attribute on the channel.  We do this
      // synchronously without proxying.  This hack is not as bad as it looks!
      if (mBytesRemaining != PRUint64(-1))
        mChannel->SetContentLength(mBytesRemaining);
    }
    else
    {
      mDirOpen = PR_TRUE;

      // Sort mDirList
      mDirList = g_list_sort(mDirList, FileInfoComparator);
      mDirListPtr = mDirList;

      // Write base URL (make sure it ends with a '/')
      mDirBuf.Append("300: ");
      mDirBuf.Append(mSpec);
      if (mSpec.get()[mSpec.Length() - 1] != '/')
        mDirBuf.Append('/');
      mDirBuf.Append('\n');

      // Write column names
      mDirBuf.Append("200: filename content-length last-modified file-type\n");

      // Write charset (assume UTF-8)
      // XXX is this correct?
      mDirBuf.Append("301: UTF-8\n");

      SetContentTypeOfChannel(APPLICATION_HTTP_INDEX_FORMAT);
    }
  }

  gnome_vfs_file_info_clear(&info);
  return rv;
}