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      1 // Copyright (c) 2012 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 #include "webkit/browser/fileapi/file_system_quota_client.h"
      6 
      7 #include <algorithm>
      8 #include <set>
      9 
     10 #include "base/bind.h"
     11 #include "base/file_util.h"
     12 #include "base/files/file_path.h"
     13 #include "base/location.h"
     14 #include "base/logging.h"
     15 #include "base/memory/scoped_ptr.h"
     16 #include "base/sequenced_task_runner.h"
     17 #include "base/single_thread_task_runner.h"
     18 #include "base/task_runner_util.h"
     19 #include "net/base/net_util.h"
     20 #include "url/gurl.h"
     21 #include "webkit/browser/fileapi/file_system_context.h"
     22 #include "webkit/browser/fileapi/file_system_quota_util.h"
     23 #include "webkit/browser/fileapi/file_system_usage_cache.h"
     24 #include "webkit/browser/fileapi/sandbox_file_system_backend.h"
     25 #include "webkit/common/fileapi/file_system_util.h"
     26 
     27 using quota::StorageType;
     28 
     29 namespace fileapi {
     30 
     31 namespace {
     32 
     33 void GetOriginsForTypeOnFileThread(
     34     FileSystemContext* context,
     35     StorageType storage_type,
     36     std::set<GURL>* origins_ptr) {
     37   FileSystemType type = QuotaStorageTypeToFileSystemType(storage_type);
     38   DCHECK(type != kFileSystemTypeUnknown);
     39 
     40   FileSystemQuotaUtil* quota_util = context->GetQuotaUtil(type);
     41   if (!quota_util)
     42     return;
     43   quota_util->GetOriginsForTypeOnFileThread(type, origins_ptr);
     44 }
     45 
     46 void GetOriginsForHostOnFileThread(
     47     FileSystemContext* context,
     48     StorageType storage_type,
     49     const std::string& host,
     50     std::set<GURL>* origins_ptr) {
     51   FileSystemType type = QuotaStorageTypeToFileSystemType(storage_type);
     52   DCHECK(type != kFileSystemTypeUnknown);
     53 
     54   FileSystemQuotaUtil* quota_util = context->GetQuotaUtil(type);
     55   if (!quota_util)
     56     return;
     57   quota_util->GetOriginsForHostOnFileThread(type, host, origins_ptr);
     58 }
     59 
     60 void DidGetOrigins(
     61     const quota::QuotaClient::GetOriginsCallback& callback,
     62     std::set<GURL>* origins_ptr) {
     63   callback.Run(*origins_ptr);
     64 }
     65 
     66 quota::QuotaStatusCode DeleteOriginOnFileThread(
     67     FileSystemContext* context,
     68     const GURL& origin,
     69     FileSystemType type) {
     70   FileSystemBackend* provider = context->GetFileSystemBackend(type);
     71   if (!provider || !provider->GetQuotaUtil())
     72     return quota::kQuotaErrorNotSupported;
     73   base::PlatformFileError result =
     74       provider->GetQuotaUtil()->DeleteOriginDataOnFileThread(
     75           context, context->quota_manager_proxy(), origin, type);
     76   if (result == base::PLATFORM_FILE_OK)
     77     return quota::kQuotaStatusOk;
     78   return quota::kQuotaErrorInvalidModification;
     79 }
     80 
     81 }  // namespace
     82 
     83 FileSystemQuotaClient::FileSystemQuotaClient(
     84     FileSystemContext* file_system_context,
     85     bool is_incognito)
     86     : file_system_context_(file_system_context),
     87       is_incognito_(is_incognito) {
     88 }
     89 
     90 FileSystemQuotaClient::~FileSystemQuotaClient() {}
     91 
     92 quota::QuotaClient::ID FileSystemQuotaClient::id() const {
     93   return quota::QuotaClient::kFileSystem;
     94 }
     95 
     96 void FileSystemQuotaClient::OnQuotaManagerDestroyed() {
     97   delete this;
     98 }
     99 
    100 void FileSystemQuotaClient::GetOriginUsage(
    101     const GURL& origin_url,
    102     StorageType storage_type,
    103     const GetUsageCallback& callback) {
    104   DCHECK(!callback.is_null());
    105 
    106   if (is_incognito_) {
    107     // We don't support FileSystem in incognito mode yet.
    108     callback.Run(0);
    109     return;
    110   }
    111 
    112   FileSystemType type = QuotaStorageTypeToFileSystemType(storage_type);
    113   DCHECK(type != kFileSystemTypeUnknown);
    114 
    115   FileSystemQuotaUtil* quota_util = file_system_context_->GetQuotaUtil(type);
    116   if (!quota_util) {
    117     callback.Run(0);
    118     return;
    119   }
    120 
    121   base::PostTaskAndReplyWithResult(
    122       file_task_runner(),
    123       FROM_HERE,
    124       // It is safe to pass Unretained(quota_util) since context owns it.
    125       base::Bind(&FileSystemQuotaUtil::GetOriginUsageOnFileThread,
    126                  base::Unretained(quota_util),
    127                  file_system_context_,
    128                  origin_url,
    129                  type),
    130       callback);
    131 }
    132 
    133 void FileSystemQuotaClient::GetOriginsForType(
    134     StorageType storage_type,
    135     const GetOriginsCallback& callback) {
    136   DCHECK(!callback.is_null());
    137 
    138   if (is_incognito_) {
    139     // We don't support FileSystem in incognito mode yet.
    140     std::set<GURL> origins;
    141     callback.Run(origins);
    142     return;
    143   }
    144 
    145   std::set<GURL>* origins_ptr = new std::set<GURL>();
    146   file_task_runner()->PostTaskAndReply(
    147       FROM_HERE,
    148       base::Bind(&GetOriginsForTypeOnFileThread,
    149                  file_system_context_,
    150                  storage_type,
    151                  base::Unretained(origins_ptr)),
    152       base::Bind(&DidGetOrigins,
    153                  callback,
    154                  base::Owned(origins_ptr)));
    155 }
    156 
    157 void FileSystemQuotaClient::GetOriginsForHost(
    158     StorageType storage_type,
    159     const std::string& host,
    160     const GetOriginsCallback& callback) {
    161   DCHECK(!callback.is_null());
    162 
    163   if (is_incognito_) {
    164     // We don't support FileSystem in incognito mode yet.
    165     std::set<GURL> origins;
    166     callback.Run(origins);
    167     return;
    168   }
    169 
    170   std::set<GURL>* origins_ptr = new std::set<GURL>();
    171   file_task_runner()->PostTaskAndReply(
    172       FROM_HERE,
    173       base::Bind(&GetOriginsForHostOnFileThread,
    174                  file_system_context_,
    175                  storage_type,
    176                  host,
    177                  base::Unretained(origins_ptr)),
    178       base::Bind(&DidGetOrigins,
    179                  callback,
    180                  base::Owned(origins_ptr)));
    181 }
    182 
    183 void FileSystemQuotaClient::DeleteOriginData(
    184     const GURL& origin,
    185     StorageType type,
    186     const DeletionCallback& callback) {
    187   FileSystemType fs_type = QuotaStorageTypeToFileSystemType(type);
    188   DCHECK(fs_type != kFileSystemTypeUnknown);
    189 
    190   base::PostTaskAndReplyWithResult(
    191       file_task_runner(),
    192       FROM_HERE,
    193       base::Bind(&DeleteOriginOnFileThread,
    194                  file_system_context_,
    195                  origin,
    196                  fs_type),
    197       callback);
    198 }
    199 
    200 base::SequencedTaskRunner* FileSystemQuotaClient::file_task_runner() const {
    201   return file_system_context_->default_file_task_runner();
    202 }
    203 
    204 }  // namespace fileapi
    205