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fake_samba_interface.cc
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fake_samba_interface.cc
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// Copyright 2017 The Chromium OS 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 "smbprovider/fake_samba_interface.h"
#include <errno.h>
#include <algorithm>
#include <iomanip>
#include <base/bits.h>
#include <base/macros.h>
#include <base/files/file_path.h>
#include <brillo/any.h>
#include "smbprovider/constants.h"
#include "smbprovider/smbprovider.h"
#include "smbprovider/smbprovider_helper.h"
namespace smbprovider {
namespace {
constexpr mode_t kFileMode = 33188; // File entry
constexpr mode_t kDirMode = 16877; // Dir entry
// Returns if |flag| is set in |flags|.
bool IsFlagSet(int32_t flags, int32_t flag) {
return (flags & flag) == flag;
}
// Returns true if |target| is inside of |source|.
bool IsTargetInsideSource(const std::string& target,
const std::string& source) {
base::FilePath target_path(target);
base::FilePath source_path(source);
return source_path.IsParent(target_path);
}
size_t CalculateEntrySize(const std::string& entry_name) {
return base::bits::Align(sizeof(smbc_dirent) + entry_name.size(),
alignof(smbc_dirent));
}
bool WriteEntry(const std::string& entry_name,
int32_t entry_type,
size_t buffer_size,
smbc_dirent* dirp) {
DCHECK(dirp);
size_t entry_size = CalculateEntrySize(entry_name);
if (entry_size > buffer_size) {
return false;
}
dirp->smbc_type = entry_type;
dirp->dirlen = entry_size;
memcpy(dirp->name, entry_name.c_str(), entry_name.size() + 1);
return true;
}
} // namespace
FakeSambaInterface::FakeSambaInterface() {
// Initialize the |file_info_| struct.
memset(&file_info_, 0, sizeof(file_info_));
}
int32_t FakeSambaInterface::OpenDirectory(const std::string& directory_path,
int32_t* dir_id) {
DCHECK(dir_id);
*dir_id = -1;
int32_t error;
if (!GetDirectory(RemoveURLScheme(directory_path), &error)) {
return error;
}
*dir_id = AddOpenDirectory(directory_path);
return 0;
}
int32_t FakeSambaInterface::CloseDirectory(int32_t dir_id) {
if (!IsDirectoryFDOpen(dir_id)) {
LOG(ERROR) << "Cannot close directory [" << dir_id
<< "]: Bad file descriptor";
return EBADF;
}
auto open_info_iter = FindOpenFD(dir_id);
LOG(INFO) << "Closed directory [" << dir_id << "] "
<< std::quoted(open_info_iter->second.full_path);
open_fds.erase(open_info_iter);
return 0;
}
int32_t FakeSambaInterface::GetDirectoryEntry(int32_t dir_id,
const smbc_dirent** dirent) {
DCHECK(dirent);
*dirent = nullptr;
if (!IsDirectoryFDOpen(dir_id)) {
return EBADF;
}
OpenInfo& open_info = FindOpenFD(dir_id)->second;
FakeDirectory* directory = GetDirectory(RemoveURLScheme(open_info.full_path));
DCHECK(directory);
if (open_info.current_index >= directory->entries.size()) {
// Reached the end of directory.
return 0;
}
FakeEntry* entry = directory->entries[open_info.current_index].get();
*dirent = PopulateDirEnt(*entry);
open_info.current_index++;
return 0;
}
int32_t FakeSambaInterface::GetDirectoryEntryWithMetadata(
int32_t dir_id, const libsmb_file_info** file_info) {
DCHECK(file_info);
*file_info = nullptr;
if (!IsDirectoryFDOpen(dir_id)) {
return EBADF;
}
OpenInfo& open_info = FindOpenFD(dir_id)->second;
FakeDirectory* directory = GetDirectory(RemoveURLScheme(open_info.full_path));
DCHECK(directory);
if (open_info.current_index >= directory->entries.size()) {
// Reached the end of directory.
return 0;
}
FakeEntry* entry = directory->entries[open_info.current_index].get();
*file_info = PopulateFileInfo(*entry);
open_info.current_index++;
return 0;
}
int32_t FakeSambaInterface::GetEntryStatus(const std::string& entry_path,
struct stat* stat) {
DCHECK(stat);
FakeEntry* entry = GetEntry(entry_path);
if (!entry || !entry->IsValidEntryType()) {
return ENOENT;
}
if (entry->locked) {
return EACCES;
}
stat->st_size = entry->size;
stat->st_mode = entry->IsFile() ? kFileMode : kDirMode;
stat->st_mtime = entry->date;
return 0;
}
int32_t FakeSambaInterface::OpenFile(const std::string& file_path,
int32_t flags,
int32_t* file_id) {
DCHECK(file_id);
*file_id = -1;
FakeFile* file = GetFile(file_path);
if (!file) {
return ENOENT;
}
if (file->locked) {
return EACCES;
}
DCHECK(IsValidOpenFileFlags(flags));
bool readable = IsFlagSet(flags, O_RDONLY) || IsFlagSet(flags, O_RDWR);
bool writeable = IsFlagSet(flags, O_WRONLY) || IsFlagSet(flags, O_RDWR);
DCHECK(readable || writeable);
*file_id = AddOpenFile(file_path, readable, writeable);
return 0;
}
int32_t FakeSambaInterface::CloseFile(int32_t file_id) {
if (close_file_error_ != 0) {
LOG(ERROR) << "Cannot close file [" << file_id << "]: Error "
<< close_file_error_;
return close_file_error_;
}
DCHECK_GT(file_id, 0);
if (!IsFileFDOpen(file_id)) {
LOG(ERROR) << "Cannot close file [" << file_id << "]: Bad file descriptor";
return EBADF;
}
auto open_info_iter = FindOpenFD(file_id);
LOG(INFO) << "Closed file [" << file_id << "] "
<< std::quoted(open_info_iter->second.full_path);
open_fds.erase(open_info_iter);
return 0;
}
int32_t FakeSambaInterface::ReadFile(int32_t file_id,
uint8_t* buffer,
size_t buffer_size,
size_t* bytes_read) {
DCHECK(buffer);
DCHECK(bytes_read);
if (!IsFileFDOpen(file_id)) {
return EBADF;
}
OpenInfo& open_info = FindOpenFD(file_id)->second;
FakeFile* file = GetFile(open_info.full_path);
DCHECK(file);
DCHECK(file->has_data);
DCHECK(file->size == file->data.size());
DCHECK(open_info.current_index <= file->data.size());
// Only read up to the end of the file.
*bytes_read =
std::min(buffer_size, file->data.size() - open_info.current_index);
if (*bytes_read == 0) {
// No need for copy or seek when bytes_read is zero.
return 0;
}
// Copy the buffer and update the offset.
memcpy(buffer, file->data.data() + open_info.current_index, *bytes_read);
open_info.current_index += *bytes_read;
DCHECK(open_info.current_index <= file->data.size());
return 0;
}
int32_t FakeSambaInterface::Seek(int32_t file_id, int64_t offset) {
if (!IsFileFDOpen(file_id)) {
return EBADF;
}
OpenInfo& open_info = FindOpenFD(file_id)->second;
if (offset > GetFile(open_info.full_path)->data.size()) {
// Returning an error when offset is outside the bounds of the file.
return EINVAL;
}
open_info.current_index = offset;
return 0;
}
int32_t FakeSambaInterface::Unlink(const std::string& file_path) {
FakeFile* file = GetFile(file_path);
if (!file) {
return ENOENT;
}
if (file->locked) {
return EACCES;
}
RemoveEntryAndResetIndicies(file_path);
return 0;
}
int32_t FakeSambaInterface::RemoveDirectory(const std::string& dir_path) {
int32_t error;
FakeDirectory* directory = GetDirectory(RemoveURLScheme(dir_path), &error);
if (!directory) {
return error;
}
if (!directory->entries.empty()) {
return ENOTEMPTY;
}
RemoveEntryAndResetIndicies(dir_path);
return 0;
}
int32_t FakeSambaInterface::CreateFile(const std::string& file_path,
int32_t* file_id) {
if (EntryExists(file_path)) {
return EEXIST;
}
int32_t error;
FakeDirectory* parent = GetDirectory(GetDirPath(file_path), &error);
if (!parent) {
return error;
}
AddFile(file_path);
*file_id = AddOpenFile(file_path, false /* readable */, true /* writeable */);
return 0;
}
int32_t FakeSambaInterface::Truncate(int32_t file_id, size_t size) {
if (truncate_error_ != 0) {
return truncate_error_;
}
if (!IsFileFDOpen(file_id)) {
return EBADFD;
}
OpenInfo& open_info = FindOpenFD(file_id)->second;
FakeFile* file = GetFile(open_info.full_path);
DCHECK(file);
file->size = size;
if (file->has_data) {
file->data.resize(size, 0);
}
// Adjust offset to end of file if the previous offset was larger than size.
open_info.current_index = std::min(open_info.current_index, size);
return 0;
}
int32_t FakeSambaInterface::WriteFile(int32_t file_id,
const uint8_t* buffer,
size_t buffer_size) {
DCHECK(buffer);
OpenInfo& open_info = FindOpenFD(file_id)->second;
DCHECK(open_info.smbc_type == SMBC_DIR || open_info.smbc_type == SMBC_FILE);
if (open_info.smbc_type != SMBC_FILE) {
return EISDIR;
}
if (!open_info.writeable) {
return EINVAL;
}
FakeFile* file = GetFile(open_info.full_path);
DCHECK(file);
// Write the data into the file.
file->WriteData(open_info.current_index, buffer, buffer_size);
// Adjust to the new offset.
open_info.current_index += buffer_size;
return 0;
}
int32_t FakeSambaInterface::CreateDirectory(const std::string& directory_path) {
if (EntryExists(directory_path)) {
return EEXIST;
}
FakeDirectory* parent = GetDirectory(GetDirPath(directory_path));
if (!parent) {
return ENOENT;
}
AddDirectory(directory_path);
return 0;
}
int32_t FakeSambaInterface::MoveEntry(const std::string& source_path,
const std::string& target_path) {
if (IsTargetInsideSource(target_path, source_path)) {
// MoveEntry fails if |target_path| is a child of source_path.
return EINVAL;
}
if (!EntryExists(source_path)) {
// MoveEntry fails if |source_path| does not exist.
return ENOENT;
}
FakeEntry* src_entry = GetEntry(source_path);
if (EntryExists(target_path)) {
// If |target_path| exists, check that we can continue with the move.
FakeEntry* target_entry = GetEntry(target_path);
int32_t result = CheckEntriesValidForMove(src_entry, target_entry);
if (result != 0) {
return result;
}
}
if (src_entry->IsDir() && src_entry->locked) {
// MoveEntry fails to move a locked directory.
return EACCES;
}
return MoveEntryFromSourceToTarget(source_path, target_path);
}
int32_t FakeSambaInterface::SpliceFile(int32_t source_fd,
int32_t target_fd,
off_t length,
off_t* bytes_written) {
DCHECK(bytes_written);
if (!IsFDOpen(source_fd) || !IsFDOpen(target_fd)) {
return EBADF;
}
// Verify the source is a readable file.
OpenInfo& source_info = FindOpenFD(source_fd)->second;
if (source_info.smbc_type != SMBC_FILE) {
return EISDIR;
}
if (!source_info.readable) {
return EINVAL;
}
// Verify the target is a writable file.
OpenInfo& target_info = FindOpenFD(target_fd)->second;
if (target_info.smbc_type != SMBC_FILE) {
return EISDIR;
}
if (!target_info.writeable) {
return EINVAL;
}
// Get the file structs.
FakeFile* source_file = GetFile(source_info.full_path);
DCHECK(source_file);
FakeFile* target_file = GetFile(target_info.full_path);
DCHECK(target_file);
// Verify there is at least |length| bytes remaining in source_info.
DCHECK_GE(source_file->data.size(), source_info.current_index);
int32_t max_bytes_remaining =
source_file->data.size() - source_info.current_index;
DCHECK_GE(max_bytes_remaining, length);
auto begin = source_file->data.begin() + source_info.current_index;
auto end = source_file->data.begin() + source_info.current_index + length;
std::vector<uint8_t> buffer(begin, end);
// Write the data into the file.
target_file->WriteData(target_info.current_index, buffer.data(),
buffer.size());
// Adjust to the new offsets of the files.
source_info.current_index += length;
target_info.current_index += length;
*bytes_written = length;
return 0;
}
int32_t FakeSambaInterface::CopyFile(const std::string& source_path,
const std::string& target_path) {
if (!EntryExists(source_path)) {
// CopyFile fails if |source_path| does not exist.
return ENOENT;
}
// CopyFile should only be called on files. A higher layer should have
// already translated a copy of a directory to a series of file copies and
// directory creations.
FakeFile* source_entry = GetFile(source_path);
if (!source_entry) {
return EISDIR;
}
if (EntryExists(target_path)) {
// |target_path| is the full path to the intended target file and must
// not exist. |target_path| also cannot be a directory.
return EEXIST;
}
// The parent of |target_path| must exist.
int32_t error;
FakeDirectory* target_parent = GetDirectory(GetDirPath(target_path), &error);
if (!target_parent) {
return error;
}
std::unique_ptr<FakeFile> new_target_file;
if (source_entry->has_data) {
new_target_file = std::make_unique<FakeFile>(
GetFileName(target_path), source_entry->date, source_entry->data);
} else {
new_target_file =
std::make_unique<FakeFile>(GetFileName(target_path), source_entry->size,
source_entry->date, false /*locked */);
}
target_parent->entries.push_back(std::move(new_target_file));
return 0;
}
int32_t FakeSambaInterface::CheckEntriesValidForMove(
FakeEntry* src_entry, FakeEntry* target_entry) const {
DCHECK(src_entry);
DCHECK(target_entry);
if (target_entry->IsFile()) {
if (src_entry->IsDir()) {
return ENOTDIR;
}
return EEXIST;
} else {
if (src_entry->IsFile()) {
return EISDIR;
}
DCHECK(target_entry->IsDir());
FakeDirectory* target_dir = static_cast<FakeDirectory*>(target_entry);
if (!target_dir->IsEmpty()) {
return EEXIST;
}
return 0;
}
}
int32_t FakeSambaInterface::MoveEntryFromSourceToTarget(
const std::string& source_path, const std::string& target_path) {
FakeDirectory* source_dir;
FakeDirectory* target_dir;
int32_t result = GetSourceAndTargetParentDirectories(
source_path, target_path, &source_dir, &target_dir);
if (result != 0) {
return result;
}
FakeSambaInterface::FakeDirectory::EntriesIterator source_it =
source_dir->GetEntryIt(GetFileName(source_path));
(*source_it)->name = GetFileName(target_path);
if (source_dir != target_dir) {
// Must perform move in addition to rename.
target_dir->entries.push_back(std::move(*source_it));
source_dir->entries.erase(source_it);
}
return 0;
}
int32_t FakeSambaInterface::GetSourceAndTargetParentDirectories(
const std::string& source_path,
const std::string& target_path,
FakeDirectory** source_parent,
FakeDirectory** target_parent) const {
DCHECK(source_parent);
DCHECK(target_parent);
int32_t error;
*source_parent = GetDirectory(GetDirPath(source_path), &error);
if (!(*source_parent)) {
return error;
}
*target_parent = GetDirectory(GetDirPath(target_path), &error);
if (!(*target_parent)) {
return error;
}
// FakeSambaInterface does not support moving open entries/parents.
DCHECK(!IsOpen(GetDirPath(source_path)));
DCHECK(!IsOpen(GetDirPath(target_path)));
DCHECK(!IsOpen(source_path));
DCHECK(!IsOpen(target_path));
return 0;
}
bool FakeSambaInterface::FakeDirectory::IsEmpty() const {
return entries.empty();
}
FakeSambaInterface::FakeEntry* FakeSambaInterface::FakeDirectory::FindEntry(
const std::string& name) {
for (auto&& entry : entries) {
if (entry->name == name) {
return entry.get();
}
}
return nullptr;
}
FakeSambaInterface::FakeDirectory::EntriesIterator
FakeSambaInterface::FakeDirectory::GetEntryIt(const std::string& name) {
return std::find_if(
entries.begin(), entries.end(),
[&name](const std::unique_ptr<FakeEntry>& p) { return p->name == name; });
}
int32_t FakeSambaInterface::FakeDirectory::RemoveEntry(
const std::string& name) {
const EntriesIterator it = GetEntryIt(name);
if (it == entries.end()) {
return -1;
}
DCHECK((*it)->IsFileOrEmptyDir());
const size_t i = it - entries.begin();
entries.erase(it);
return i;
}
void FakeSambaInterface::FakeFile::WriteData(size_t offset,
const uint8_t* buffer,
size_t buffer_size) {
// Ensure that the current size of the file greater than or equal to the
// offset.
DCHECK(this->data.size() >= offset);
// Resize the data to the new length if necessary.
const size_t new_length = std::max(offset + buffer_size, this->data.size());
this->data.resize(new_length, 0);
this->size = new_length;
// Copy the data from buffer into the vector starting from the offset.
memcpy(this->data.data() + offset, buffer, buffer_size);
this->has_data = true;
}
FakeSambaInterface::FakeEntry::FakeEntry(const std::string& name,
uint32_t smbc_type,
size_t size,
time_t date,
bool locked)
: name(name),
smbc_type(smbc_type),
size(size),
date(date),
locked(locked) {}
void FakeSambaInterface::AddDirectory(const std::string& path) {
AddDirectory(path, false /* locked */, SMBC_DIR);
}
void FakeSambaInterface::AddServer(const std::string& server_url) {
AddDirectory(server_url, false /* locked */, SMBC_SERVER);
}
void FakeSambaInterface::AddShare(const std::string& path) {
AddDirectory(path, false /* locked */, SMBC_FILE_SHARE);
}
void FakeSambaInterface::AddDirectory(const std::string& path,
bool locked,
uint32_t smbc_type) {
AddDirectory(path, locked, smbc_type, 0 /* date */);
}
void FakeSambaInterface::AddDirectory(const std::string& path,
bool locked,
uint32_t smbc_type,
time_t date) {
// Make sure that no entry exists in that path.
DCHECK(!EntryExists(path));
DCHECK(!IsOpen(path));
FakeDirectory* directory = GetDirectory(GetDirPath(path));
DCHECK(directory);
directory->entries.emplace_back(std::make_unique<FakeDirectory>(
GetFileName(path), locked, smbc_type, date));
}
void FakeSambaInterface::AddLockedDirectory(const std::string& path) {
AddDirectory(path, true, SMBC_DIR);
}
void FakeSambaInterface::AddFile(const std::string& path) {
AddFile(path, 0 /* size */);
}
void FakeSambaInterface::AddFile(const std::string& path, size_t size) {
AddFile(path, size, 0 /* date */);
}
void FakeSambaInterface::AddFile(const std::string& path,
size_t size,
time_t date) {
AddFile(path, size, date, false /* locked */);
}
void FakeSambaInterface::AddFile(const std::string& path,
size_t size,
time_t date,
bool locked) {
// Make sure that no entry exists in that path.
DCHECK(!EntryExists(path));
DCHECK(!IsOpen(path));
FakeDirectory* directory = GetDirectory(GetDirPath(path));
DCHECK(directory);
directory->entries.emplace_back(
std::make_unique<FakeFile>(GetFileName(path), size, date, locked));
}
void FakeSambaInterface::AddFile(const std::string& path,
time_t date,
std::vector<uint8_t> file_data) {
// Make sure that no entry exists in that path.
DCHECK(!EntryExists(path));
DCHECK(!IsOpen(path));
FakeDirectory* directory = GetDirectory(GetDirPath(path));
DCHECK(directory);
directory->entries.emplace_back(std::make_unique<FakeFile>(
GetFileName(path), date, std::move(file_data)));
}
void FakeSambaInterface::AddFile(const std::string& dir_path,
const std::string& name) {
FakeDirectory* directory = GetDirectory(RemoveURLScheme(dir_path));
DCHECK(directory);
directory->entries.emplace_back(std::make_unique<FakeFile>(
name, 0 /* size */, 0 /* date */, false /* locked */));
}
void FakeSambaInterface::AddLockedFile(const std::string& path) {
AddFile(path, 0 /* size */, 0 /* date */, true /* locked */);
}
void FakeSambaInterface::AddEntry(const std::string& path, uint32_t smbc_type) {
// Make sure that no entry exists in that path.
DCHECK(!EntryExists(path));
DCHECK(!IsOpen(path));
FakeDirectory* directory = GetDirectory(GetDirPath(path));
DCHECK(directory);
directory->entries.emplace_back(
std::make_unique<FakeEntry>(GetFileName(path), smbc_type, 0 /* size */,
0 /* date */, false /* locked */));
}
FakeSambaInterface::FakeDirectory* FakeSambaInterface::GetDirectory(
const std::string& full_path) const {
int32_t error;
return GetDirectory(full_path, &error);
}
FakeSambaInterface::FakeDirectory* FakeSambaInterface::GetDirectory(
const std::string& full_path, int32_t* error) const {
if (get_directory_error_ != 0) {
*error = get_directory_error_;
return nullptr;
}
PathParts split_path = SplitPath(full_path);
FakeDirectory* current = &root;
// i = 0 represents the root directory which we already have.
DCHECK_EQ("/", split_path[0]);
for (int i = 1; i < split_path.size(); ++i) {
FakeEntry* entry = current->FindEntry(split_path[i]);
if (!entry) {
*error = ENOENT;
return nullptr;
}
if (!entry->IsDir()) {
*error = ENOTDIR;
return nullptr;
}
if (entry->locked) {
*error = EACCES;
return nullptr;
}
current = static_cast<FakeDirectory*>(entry);
}
return current;
}
FakeSambaInterface::FakeFile* FakeSambaInterface::GetFile(
const std::string& file_path) const {
FakeEntry* entry = GetEntry(file_path);
if (!entry || !entry->IsFile()) {
return nullptr;
}
return static_cast<FakeFile*>(entry);
}
FakeSambaInterface::FakeEntry* FakeSambaInterface::GetEntry(
const std::string& entry_path) const {
FakeDirectory* directory = GetDirectory(GetDirPath(entry_path));
if (!directory) {
return nullptr;
}
return directory->FindEntry(GetFileName(entry_path));
}
int32_t FakeSambaInterface::AddOpenDirectory(const std::string& path) {
DCHECK(!IsFDOpen(next_fd));
open_fds.emplace(next_fd, OpenInfo(path, SMBC_DIR));
LOG(INFO) << "Opened directory [" << next_fd << "] " << std::quoted(path);
return next_fd++;
}
int32_t FakeSambaInterface::AddOpenFile(const std::string& path,
bool readable,
bool writeable) {
DCHECK(!IsFDOpen(next_fd));
open_fds.emplace(next_fd, OpenInfo(path, SMBC_FILE, readable, writeable));
LOG(INFO) << "Opened file [" << next_fd << "] " << std::quoted(path);
return next_fd++;
}
bool FakeSambaInterface::IsOpen(const std::string& full_path) const {
for (auto const& open_it : open_fds) {
if (open_it.second.full_path == full_path) {
return true;
}
}
return false;
}
bool FakeSambaInterface::HasOpenEntries() const {
return !open_fds.empty();
}
bool FakeSambaInterface::IsFileFDOpen(uint32_t fd) const {
auto open_iter = open_fds.find(fd);
return open_iter != open_fds.end() &&
open_iter->second.smbc_type == SMBC_FILE;
}
bool FakeSambaInterface::IsDirectoryFDOpen(uint32_t fd) const {
auto open_iter = open_fds.find(fd);
return open_iter != open_fds.end() && open_iter->second.smbc_type == SMBC_DIR;
}
bool FakeSambaInterface::IsFDOpen(uint32_t fd) const {
return open_fds.count(fd) != 0;
}
size_t FakeSambaInterface::GetFileOffset(int32_t fd) const {
const OpenInfo& open_info = FindOpenFD(fd)->second;
DCHECK_EQ(open_info.smbc_type, SMBC_FILE);
return open_info.current_index;
}
size_t FakeSambaInterface::GetFileSize(const std::string& path) const {
FakeFile* file = GetFile(path);
DCHECK(file);
return file->size;
}
FakeSambaInterface::OpenEntriesIterator FakeSambaInterface::FindOpenFD(
uint32_t fd) {
return open_fds.find(fd);
}
FakeSambaInterface::OpenEntriesConstIterator FakeSambaInterface::FindOpenFD(
uint32_t fd) const {
return open_fds.find(fd);
}
bool FakeSambaInterface::FakeEntry::IsValidEntryType() const {
return IsFile() || IsDir();
}
bool FakeSambaInterface::FakeEntry::IsFile() const {
return smbc_type == SMBC_FILE;
}
bool FakeSambaInterface::FakeEntry::IsDir() const {
return smbc_type == SMBC_DIR || smbc_type == SMBC_SERVER ||
smbc_type == SMBC_FILE_SHARE;
}
bool FakeSambaInterface::FakeEntry::IsFileOrEmptyDir() const {
DCHECK(IsValidEntryType());
return IsFile() || static_cast<const FakeDirectory*>(this)->IsEmpty();
}
bool FakeSambaInterface::HasReadSet(int32_t fd) const {
DCHECK(IsFDOpen(fd));
return open_fds.at(fd).readable;
}
bool FakeSambaInterface::HasWriteSet(int32_t fd) const {
DCHECK(IsFDOpen(fd));
return open_fds.at(fd).writeable;
}
bool FakeSambaInterface::EntryExists(const std::string& path) const {
return GetEntry(path);
}
void FakeSambaInterface::SetCloseFileError(int32_t error) {
close_file_error_ = error;
}
void FakeSambaInterface::SetTruncateError(int32_t error) {
truncate_error_ = error;
}
void FakeSambaInterface::SetGetDirectoryError(int32_t error) {
get_directory_error_ = error;
}
void FakeSambaInterface::SetCurrentEntry(int32_t dir_id, size_t index) {
DCHECK(IsFDOpen(dir_id));
OpenInfo& info = FindOpenFD(dir_id)->second;
FakeDirectory* directory = GetDirectory(RemoveURLScheme(info.full_path));
DCHECK(directory);
DCHECK_LE(index, directory->entries.size());
info.current_index = index;
}
std::string FakeSambaInterface::GetCurrentEntry(int32_t dir_id) {
DCHECK(IsFDOpen(dir_id));
OpenInfo& info = FindOpenFD(dir_id)->second;
const size_t index = info.current_index;
FakeDirectory* directory = GetDirectory(RemoveURLScheme(info.full_path));
DCHECK(directory);
if (index == directory->entries.size()) {
return "";
}
return directory->entries[index]->name;
}
bool FakeSambaInterface::IsFileDataEqual(
const std::string& path, const std::vector<uint8_t>& expected) const {
FakeFile* file = GetFile(path);
if (!file || !file->has_data) {
return false;
}
if (file->size != expected.size()) {
return false;
}
return expected == file->data;
}
void FakeSambaInterface::RewindOpenInfoIndicesIfNeccessary(
const std::string& dir_path, size_t deleted_index) {
for (auto& it : open_fds) {
OpenInfo& info = it.second;
if (info.IsForDir(dir_path)) {
if (deleted_index < info.current_index) {
// By removing an entry from the directory that has already been read,
// current_index will have been inadvertantly advanced.
--info.current_index;
}
}
}
}
bool FakeSambaInterface::OpenInfo::IsForDir(const std::string& dir_path) {
return RemoveURLScheme(full_path) == dir_path;
}
void FakeSambaInterface::RemoveEntryAndResetIndicies(
const std::string& full_path) {
FakeDirectory* parent = GetDirectory(GetDirPath(full_path));
const int32_t deleted_index = parent->RemoveEntry(GetFileName(full_path));
DCHECK_GE(deleted_index, 0);
RewindOpenInfoIndicesIfNeccessary(GetDirPath(full_path), deleted_index);
}
const libsmb_file_info* FakeSambaInterface::PopulateFileInfo(
const FakeEntry& entry) {
file_info_.size = entry.size;
file_info_.mtime_ts.tv_sec = entry.date;
file_info_.attrs =
(entry.smbc_type == SMBC_FILE) ? 0 : kFileAttributeDirectory;
// The libsmb_file_info struct has a non-const char* so even through only
// a const pointer is ever returned, the member variable backing it is
// not const.
file_info_.name = const_cast<char*>(entry.name.c_str());
return &file_info_;
}
const smbc_dirent* FakeSambaInterface::PopulateDirEnt(const FakeEntry& entry) {
smbc_dirent* const dirent = reinterpret_cast<smbc_dirent*>(&dirent_buf_);
const bool result =
WriteEntry(entry.name, entry.smbc_type, kDirEntBufSize, dirent);
DCHECK(result);
return dirent;
}
SambaInterface::SambaInterfaceId FakeSambaInterface::GetSambaInterfaceId() {
// GetSambaInterfaceId() should never be called directly on
// FakeSambaInterface. All tests should call FakeSambaProxy which provides a
// unique SambaInterfaceId for each instance.
NOTREACHED();
return 0;
}
SambaInterface::WeakPtr FakeSambaInterface::AsWeakPtr() {
return weak_factory_.GetWeakPtr();
}
} // namespace smbprovider