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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include "ipc/ipc_message.h"
#include "ppapi/proxy/nacl_message_scanner.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/ppapi_proxy_test.h"
#include "ppapi/proxy/serialized_handle.h"
#include "ppapi/shared_impl/host_resource.h"
namespace ppapi {
namespace proxy {
namespace {
const PP_Resource kInvalidResource = 0;
const PP_Resource kFileSystem = 1;
const PP_Resource kFileIO = 2;
const int64_t kQuotaReservationAmount = 100;
}
class NaClMessageScannerTest : public PluginProxyTest {
public:
NaClMessageScannerTest() {}
NaClMessageScanner::FileSystem* FindFileSystem(
const NaClMessageScanner& scanner,
PP_Resource file_system) {
NaClMessageScanner::FileSystemMap::const_iterator it =
scanner.file_systems_.find(file_system);
return (it != scanner.file_systems_.end()) ? it->second : NULL;
}
NaClMessageScanner::FileIO* FindFileIO(
const NaClMessageScanner& scanner,
PP_Resource file_io) {
NaClMessageScanner::FileIOMap::const_iterator it =
scanner.files_.find(file_io);
return (it != scanner.files_.end()) ? it->second : NULL;
}
void OpenQuotaFile(NaClMessageScanner* scanner,
PP_Resource file_io,
PP_Resource file_system) {
std::vector<SerializedHandle> unused_handles;
ResourceMessageReplyParams fio_reply_params(file_io, 0);
std::unique_ptr<IPC::Message> new_msg_ptr;
scanner->ScanMessage(
PpapiPluginMsg_ResourceReply(
fio_reply_params,
PpapiPluginMsg_FileIO_OpenReply(file_system, 0)),
PpapiPluginMsg_ResourceReply::ID,
&unused_handles,
&new_msg_ptr);
EXPECT_FALSE(new_msg_ptr);
}
};
TEST_F(NaClMessageScannerTest, FileOpenClose) {
NaClMessageScanner test;
std::vector<SerializedHandle> unused_handles;
ResourceMessageCallParams fio_call_params(kFileIO, 0);
ResourceMessageCallParams fs_call_params(kFileSystem, 0);
ResourceMessageReplyParams fio_reply_params(kFileIO, 0);
ResourceMessageReplyParams fs_reply_params(kFileSystem, 0);
std::unique_ptr<IPC::Message> new_msg_ptr;
EXPECT_EQ(NULL, FindFileSystem(test, kFileSystem));
EXPECT_EQ(NULL, FindFileIO(test, kFileIO));
// Open a file, not in a quota file system.
test.ScanMessage(
PpapiPluginMsg_ResourceReply(
fio_reply_params,
PpapiPluginMsg_FileIO_OpenReply(kInvalidResource, 0)),
PpapiPluginMsg_ResourceReply::ID,
&unused_handles,
&new_msg_ptr);
EXPECT_FALSE(new_msg_ptr);
EXPECT_FALSE(FindFileSystem(test, kFileSystem));
EXPECT_FALSE(FindFileIO(test, kFileIO));
// Open a file in a quota file system; info objects for it and its file system
// should be created.
OpenQuotaFile(&test, kFileIO, kFileSystem);
NaClMessageScanner::FileSystem* fs = FindFileSystem(test, kFileSystem);
NaClMessageScanner::FileIO* fio = FindFileIO(test, kFileIO);
EXPECT_TRUE(fs);
EXPECT_EQ(0, fs->reserved_quota());
EXPECT_TRUE(fio);
EXPECT_EQ(0, fio->max_written_offset());
const int64_t kNewFileSize = 10;
fio->SetMaxWrittenOffset(kNewFileSize);
// We should not be able to under-report max_written_offset when closing.
test.ScanUntrustedMessage(
PpapiHostMsg_ResourceCall(
fio_call_params,
PpapiHostMsg_FileIO_Close(FileGrowth(0, 0))),
&new_msg_ptr);
EXPECT_TRUE(new_msg_ptr);
ResourceMessageCallParams call_params;
IPC::Message nested_msg;
FileGrowth file_growth;
EXPECT_TRUE(UnpackMessage<PpapiHostMsg_ResourceCall>(
*new_msg_ptr, &call_params, &nested_msg) &&
UnpackMessage<PpapiHostMsg_FileIO_Close>(
nested_msg, &file_growth));
new_msg_ptr.reset();
EXPECT_EQ(kNewFileSize, file_growth.max_written_offset);
EXPECT_FALSE(FindFileIO(test, kFileIO));
// Reopen the file.
OpenQuotaFile(&test, kFileIO, kFileSystem);
fio = FindFileIO(test, kFileIO);
fio->SetMaxWrittenOffset(kNewFileSize);
// Close with correct max_written_offset.
test.ScanUntrustedMessage(
PpapiHostMsg_ResourceCall(
fio_call_params,
PpapiHostMsg_FileIO_Close(FileGrowth(kNewFileSize, 0))),
&new_msg_ptr);
EXPECT_FALSE(new_msg_ptr);
EXPECT_FALSE(FindFileIO(test, kFileIO));
// Destroy file system.
test.ScanUntrustedMessage(
PpapiHostMsg_ResourceCall(
fs_call_params,
PpapiHostMsg_ResourceDestroyed(kFileSystem)),
&new_msg_ptr);
EXPECT_FALSE(FindFileSystem(test, kFileSystem));
}
TEST_F(NaClMessageScannerTest, QuotaAuditing) {
NaClMessageScanner test;
std::vector<SerializedHandle> unused_handles;
ResourceMessageCallParams fio_call_params(kFileIO, 0);
ResourceMessageCallParams fs_call_params(kFileSystem, 0);
ResourceMessageReplyParams fio_reply_params(kFileIO, 0);
ResourceMessageReplyParams fs_reply_params(kFileSystem, 0);
std::unique_ptr<IPC::Message> new_msg_ptr;
OpenQuotaFile(&test, kFileIO, kFileSystem);
NaClMessageScanner::FileSystem* fs = FindFileSystem(test, kFileSystem);
NaClMessageScanner::FileIO* fio = FindFileIO(test, kFileIO);
EXPECT_TRUE(fs);
EXPECT_EQ(0, fs->reserved_quota());
EXPECT_TRUE(fio);
EXPECT_EQ(0, fio->max_written_offset());
// Without reserving quota, we should not be able to grow the file.
EXPECT_FALSE(fio->Grow(1));
EXPECT_EQ(0, fs->reserved_quota());
EXPECT_EQ(0, fio->max_written_offset());
// Receive reserved quota, and updated file sizes.
const int64_t kNewFileSize = 10;
FileSizeMap file_sizes;
file_sizes[kFileIO] = kNewFileSize;
test.ScanMessage(
PpapiPluginMsg_ResourceReply(
fs_reply_params,
PpapiPluginMsg_FileSystem_ReserveQuotaReply(
kQuotaReservationAmount,
file_sizes)),
PpapiPluginMsg_ResourceReply::ID,
&unused_handles,
&new_msg_ptr);
EXPECT_FALSE(new_msg_ptr);
EXPECT_EQ(kQuotaReservationAmount, fs->reserved_quota());
EXPECT_EQ(kNewFileSize, fio->max_written_offset());
// We should be able to grow the file within quota.
EXPECT_TRUE(fio->Grow(1));
EXPECT_EQ(kQuotaReservationAmount - 1, fs->reserved_quota());
EXPECT_EQ(kNewFileSize + 1, fio->max_written_offset());
// We should not be able to grow the file over quota.
EXPECT_FALSE(fio->Grow(kQuotaReservationAmount));
EXPECT_EQ(kQuotaReservationAmount - 1, fs->reserved_quota());
EXPECT_EQ(kNewFileSize + 1, fio->max_written_offset());
// Plugin should not under-report max written offsets when reserving quota.
file_sizes[kFileIO] = 0; // should be kNewFileSize + 1.
test.ScanUntrustedMessage(
PpapiHostMsg_ResourceCall(
fio_call_params,
PpapiHostMsg_FileSystem_ReserveQuota(
kQuotaReservationAmount,
FileSizeMapToFileGrowthMapForTesting(file_sizes))),
&new_msg_ptr);
EXPECT_TRUE(new_msg_ptr);
ResourceMessageCallParams call_params;
IPC::Message nested_msg;
int64_t amount = 0;
FileGrowthMap new_file_growths;
EXPECT_TRUE(UnpackMessage<PpapiHostMsg_ResourceCall>(
*new_msg_ptr, &call_params, &nested_msg) &&
UnpackMessage<PpapiHostMsg_FileSystem_ReserveQuota>(
nested_msg, &amount, &new_file_growths));
new_msg_ptr.reset();
EXPECT_EQ(kQuotaReservationAmount, amount);
EXPECT_EQ(kNewFileSize + 1, new_file_growths[kFileIO].max_written_offset);
}
TEST_F(NaClMessageScannerTest, SetLength) {
NaClMessageScanner test;
std::vector<SerializedHandle> unused_handles;
ResourceMessageCallParams fio_call_params(kFileIO, 0);
ResourceMessageCallParams fs_call_params(kFileSystem, 0);
ResourceMessageReplyParams fio_reply_params(kFileIO, 0);
ResourceMessageReplyParams fs_reply_params(kFileSystem, 0);
std::unique_ptr<IPC::Message> new_msg_ptr;
OpenQuotaFile(&test, kFileIO, kFileSystem);
NaClMessageScanner::FileSystem* fs = FindFileSystem(test, kFileSystem);
NaClMessageScanner::FileIO* fio = FindFileIO(test, kFileIO);
// Receive reserved quota, and updated file sizes.
const int64_t kNewFileSize = 10;
FileSizeMap file_sizes;
file_sizes[kFileIO] = 0;
test.ScanMessage(
PpapiPluginMsg_ResourceReply(
fs_reply_params,
PpapiPluginMsg_FileSystem_ReserveQuotaReply(
kQuotaReservationAmount,
file_sizes)),
PpapiPluginMsg_ResourceReply::ID,
&unused_handles,
&new_msg_ptr);
// We should be able to SetLength within quota.
test.ScanUntrustedMessage(
PpapiHostMsg_ResourceCall(
fio_call_params,
PpapiHostMsg_FileIO_SetLength(kNewFileSize)),
&new_msg_ptr);
EXPECT_FALSE(new_msg_ptr);
EXPECT_EQ(kQuotaReservationAmount - kNewFileSize, fs->reserved_quota());
EXPECT_EQ(kNewFileSize, fio->max_written_offset());
// We shouldn't be able to SetLength beyond quota. The message should be
// rewritten to fail with length == -1.
test.ScanUntrustedMessage(
PpapiHostMsg_ResourceCall(
fio_call_params,
PpapiHostMsg_FileIO_SetLength(kQuotaReservationAmount + 1)),
&new_msg_ptr);
EXPECT_TRUE(new_msg_ptr);
ResourceMessageCallParams call_params;
IPC::Message nested_msg;
int64_t length = 0;
EXPECT_TRUE(UnpackMessage<PpapiHostMsg_ResourceCall>(
*new_msg_ptr, &call_params, &nested_msg) &&
UnpackMessage<PpapiHostMsg_FileIO_SetLength>(
nested_msg, &length));
new_msg_ptr.reset();
EXPECT_EQ(-1, length);
EXPECT_EQ(kQuotaReservationAmount - kNewFileSize, fs->reserved_quota());
EXPECT_EQ(kNewFileSize, fio->max_written_offset());
}
} // namespace proxy
} // namespace ppapi
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