Add mechanism to auto mount file systems in response to a URL request.

webkit/browser/fileapi/file_system_dir_url_request_job.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/browser/fileapi/file_system_dir_url_request_job.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 17 matching lines @@
 using net::NetworkDelegate;
 using net::URLRequest;
 using net::URLRequestJob;
 using net::URLRequestStatus;
 
 namespace fileapi {
 
 FileSystemDirURLRequestJob::FileSystemDirURLRequestJob(
     URLRequest* request,
     NetworkDelegate* network_delegate,
+    const std::string& storage_domain,
     FileSystemContext* file_system_context)
     : URLRequestJob(request, network_delegate),
+      storage_domain_(storage_domain),
       file_system_context_(file_system_context),
       weak_factory_(this) {
 }
 
 FileSystemDirURLRequestJob::~FileSystemDirURLRequestJob() {
 }
 
 bool FileSystemDirURLRequestJob::ReadRawData(net::IOBuffer* dest, int dest_size,
                                              int *bytes_read) {
   int count = std::min(dest_size, static_cast<int>(data_.size()));
@@ skipping 24 matching lines @@
 
 bool FileSystemDirURLRequestJob::GetCharset(std::string* charset) {
   *charset = "utf-8";
   return true;
 }
 
 void FileSystemDirURLRequestJob::StartAsync() {
   if (!request_)
     return;
   url_ = file_system_context_->CrackURL(request_->url());
+  if (!url_.is_valid()) {
+    file_system_context_->AttemptAutoMountForURLRequest(
+        request_,
+        storage_domain_,
+        base::Bind(&FileSystemDirURLRequestJob::DidAttemptAutoMount,
+                   weak_factory_.GetWeakPtr()));
+    return;
+  }
   if (!file_system_context_->CanServeURLRequest(url_)) {
     // In incognito mode the API is not usable and there should be no data.
     if (url_.is_valid() && VirtualPath::IsRootPath(url_.virtual_path())) {
       // Return an empty directory if the filesystem root is queried.
       DidReadDirectory(base::File::FILE_OK,
                        std::vector<DirectoryEntry>(),
                        false);
       return;
     }
     NotifyDone(URLRequestStatus(URLRequestStatus::FAILED,
                                 net::ERR_FILE_NOT_FOUND));
     return;
   }
   file_system_context_->operation_runner()->ReadDirectory(
       url_,
       base::Bind(&FileSystemDirURLRequestJob::DidReadDirectory, this));
 }
 
+void FileSystemDirURLRequestJob::DidAttemptAutoMount(base::File::Error result) {
+  if (result >= 0 &&
+      file_system_context_->CrackURL(request_->url()).is_valid()) {
+    StartAsync();
+  } else {
+    NotifyDone(URLRequestStatus(URLRequestStatus::FAILED,
+                                net::ERR_FILE_NOT_FOUND));
+  }
+}
+
 void FileSystemDirURLRequestJob::DidReadDirectory(
     base::File::Error result,
     const std::vector<DirectoryEntry>& entries,
     bool has_more) {
   if (result != base::File::FILE_OK) {
     int rv = net::ERR_FILE_NOT_FOUND;
     if (result == base::File::FILE_ERROR_INVALID_URL)
       rv = net::ERR_INVALID_URL;
     NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, rv));
     return;
@@ skipping 20 matching lines @@
         it->last_modified_time));
   }
 
   if (!has_more) {
     set_expected_content_size(data_.size());
     NotifyHeadersComplete();
   }
 }
 
 }  // namespace fileapi