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goldberg_emulator/dll/local_storage.cpp
2019-05-03 09:09:06 -04:00

673 lines
17 KiB
C++

/* Copyright (C) 2019 Mr Goldberg
This file is part of the Goldberg Emulator
The Goldberg Emulator is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
The Goldberg Emulator is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the Goldberg Emulator; if not, see
<http://www.gnu.org/licenses/>. */
#include "local_storage.h"
#include <fstream>
#ifdef NO_DISK_WRITES
std::string Local_Storage::get_program_path()
{
return " ";
}
std::string Local_Storage::get_user_appdata_path()
{
return " ";
}
std::string Local_Storage::get_game_settings_path()
{
return " ";
}
std::string Local_Storage::get_path(std::string folder)
{
return "";
}
std::string Local_Storage::get_global_settings_path()
{
return "";
}
Local_Storage::Local_Storage(std::string save_directory)
{
}
void Local_Storage::setAppId(uint32 appid)
{
}
int Local_Storage::store_file_data(std::string folder, std::string file, char *data, unsigned int length)
{
return -1;
}
int Local_Storage::store_data(std::string folder, std::string file, char *data, unsigned int length)
{
return -1;
}
int Local_Storage::store_data_settings(std::string file, char *data, unsigned int length)
{
return -1;
}
int Local_Storage::get_file_data(std::string full_path, char *data, unsigned int max_length)
{
return -1;
}
int Local_Storage::get_data(std::string folder, std::string file, char *data, unsigned int max_length)
{
return -1;
}
int Local_Storage::get_data_settings(std::string file, char *data, unsigned int max_length)
{
return 0;
}
int Local_Storage::count_files(std::string folder)
{
return 0;
}
bool Local_Storage::file_exists(std::string folder, std::string file)
{
return false;
}
unsigned int Local_Storage::file_size(std::string folder, std::string file)
{
return 0;
}
bool Local_Storage::file_delete(std::string folder, std::string file)
{
return false;
}
uint64_t Local_Storage::file_timestamp(std::string folder, std::string file)
{
return 0;
}
bool Local_Storage::iterate_file(std::string folder, int index, char *output_filename, int32 *output_size)
{
return false;
}
bool Local_Storage::update_save_filenames(std::string folder)
{
return true;
}
std::vector<std::string> Local_Storage::get_filenames_path(std::string path)
{
return std::vector<std::string>();
}
#else
#if defined(WIN32) || defined(_WIN32)
#include <windows.h>
static BOOL DirectoryExists(LPCSTR szPath)
{
DWORD dwAttrib = GetFileAttributesA(szPath);
return (dwAttrib != INVALID_FILE_ATTRIBUTES &&
(dwAttrib & FILE_ATTRIBUTE_DIRECTORY));
}
static void createDirectoryRecursively(std::string path)
{
unsigned long long pos = 0;
do
{
pos = path.find_first_of("\\/", pos + 1);
CreateDirectoryA(path.substr(0, pos).c_str(), NULL);
} while (pos != std::string::npos);
}
static void create_directory(std::string strPath)
{
if (DirectoryExists(strPath.c_str()) == FALSE)
createDirectoryRecursively(strPath);
}
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
static int count_files_directory(std::string path)
{
path = path.append("*");
int counter = 0;
WIN32_FIND_DATAA ffd;
HANDLE hFind = INVALID_HANDLE_VALUE;
// Start iterating over the files in the path directory.
hFind = ::FindFirstFileA (path.c_str(), &ffd);
if (hFind != INVALID_HANDLE_VALUE)
{
do // Managed to locate and create an handle to that folder.
{
if (strcmp(".", ffd.cFileName) == 0) continue;
if (strcmp("..", ffd.cFileName) == 0) continue;
counter++;
} while (::FindNextFileA(hFind, &ffd) == TRUE);
::FindClose(hFind);
} else {
//printf("Failed to find path: %s", path.c_str());
}
return counter;
}
static bool get_filename_at_index(std::string strPath, char *filename, int index)
{
strPath = strPath.append("\\*");
int counter = 0;
WIN32_FIND_DATAA ffd;
HANDLE hFind = INVALID_HANDLE_VALUE;
// Start iterating over the files in the path directory.
hFind = ::FindFirstFileA (strPath.c_str(), &ffd);
if (hFind != INVALID_HANDLE_VALUE)
{
do // Managed to locate and create an handle to that folder.
{
if (strcmp(".", ffd.cFileName) == 0) continue;
if (strcmp("..", ffd.cFileName) == 0) continue;
if (counter == index) {
memcpy(filename, ffd.cFileName, MAX_PATH);
::FindClose(hFind);
return true;
}
counter++;
} while (::FindNextFileA(hFind, &ffd) == TRUE);
::FindClose(hFind);
} else {
printf("Failed to find path: %s", strPath.c_str());
}
return false;
}
static std::vector<std::string> get_filenames(std::string strPath)
{
std::vector<std::string> output;
strPath = strPath.append("\\*");
WIN32_FIND_DATAA ffd;
HANDLE hFind = INVALID_HANDLE_VALUE;
// Start iterating over the files in the path directory.
hFind = ::FindFirstFileA (strPath.c_str(), &ffd);
if (hFind != INVALID_HANDLE_VALUE)
{
do // Managed to locate and create an handle to that folder.
{
if (strcmp(".", ffd.cFileName) == 0) continue;
if (strcmp("..", ffd.cFileName) == 0) continue;
output.push_back(ffd.cFileName);
} while (::FindNextFileA(hFind, &ffd) == TRUE);
::FindClose(hFind);
} else {
printf("Failed to find path: %s", strPath.c_str());
}
return output;
}
#else
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <dirent.h>
#define PATH_MAX_STRING_SIZE 512
/* recursive mkdir */
static int mkdir_p(const char *dir, const mode_t mode) {
char tmp[PATH_MAX_STRING_SIZE];
char *p = NULL;
struct stat sb;
size_t len;
/* copy path */
len = strnlen (dir, PATH_MAX_STRING_SIZE);
if (len == 0 || len == PATH_MAX_STRING_SIZE) {
return -1;
}
memcpy (tmp, dir, len);
tmp[len] = '\0';
/* remove trailing slash */
if(tmp[len - 1] == '/') {
tmp[len - 1] = '\0';
}
/* check if path exists and is a directory */
if (stat (tmp, &sb) == 0) {
if (S_ISDIR (sb.st_mode)) {
return 0;
}
}
/* recursive mkdir */
for(p = tmp + 1; *p; p++) {
if(*p == '/') {
*p = 0;
/* test path */
if (stat(tmp, &sb) != 0) {
/* path does not exist - create directory */
if (mkdir(tmp, mode) < 0) {
return -1;
}
} else if (!S_ISDIR(sb.st_mode)) {
/* not a directory */
return -1;
}
*p = '/';
}
}
/* test path */
if (stat(tmp, &sb) != 0) {
/* path does not exist - create directory */
if (mkdir(tmp, mode) < 0) {
return -1;
}
} else if (!S_ISDIR(sb.st_mode)) {
/* not a directory */
return -1;
}
return 0;
}
static void create_directory(std::string strPath)
{
mkdir_p(strPath.c_str(), 0777);
}
static int count_files_directory(std::string strPath)
{
DIR *dp;
int i = 0;
struct dirent *ep;
dp = opendir (strPath.c_str());
if (dp != NULL)
{
while ((ep = readdir (dp)))
i++;
(void) closedir (dp);
}
if (i < 2) i = 2;
return i - 2;
}
//filename should be 256 big
static bool get_filename_at_index(std::string strPath, char *filename, int index)
{
DIR *dp;
int i = 0;
struct dirent *ep;
dp = opendir (strPath.c_str());
if (dp != NULL)
{
while ((ep = readdir (dp))) {
if (memcmp(ep->d_name, ".", 2) != 0 && memcmp(ep->d_name, "..", 3) != 0) {
if (i == (index)) {
memcpy(filename, ep->d_name, 256);
(void) closedir (dp);
return true;
}
i++;
}
}
(void) closedir (dp);
}
return false;
}
static std::vector<std::string> get_filenames(std::string strPath)
{
DIR *dp;
int i = 0;
struct dirent *ep;
std::vector<std::string> output;
dp = opendir (strPath.c_str());
if (dp != NULL)
{
while ((ep = readdir (dp))) {
if (memcmp(ep->d_name, ".", 2) != 0 && memcmp(ep->d_name, "..", 3) != 0) {
output.push_back(ep->d_name);
i++;
}
}
(void) closedir (dp);
}
return output;
}
#endif
std::string Local_Storage::get_program_path()
{
return get_full_program_path();
}
std::string Local_Storage::get_game_settings_path()
{
return get_program_path().append(GAME_SETTINGS_FOLDER).append(PATH_SEPARATOR);
}
#if defined(STEAM_WIN32)
#include <shlobj.h>
#include <sstream>
#endif
std::string Local_Storage::get_user_appdata_path()
{
std::string user_appdata_path = "SAVE";
#if defined(STEAM_WIN32)
CHAR szPath[MAX_PATH] = {};
HRESULT hr = SHGetFolderPathA(NULL, CSIDL_APPDATA, NULL, 0, szPath);
if (SUCCEEDED(hr)) {
user_appdata_path = szPath;
}
#else
/* $XDG_DATA_HOME defines the base directory relative to which user specific data files should be stored.
If $XDG_DATA_HOME is either not set or empty, a default equal to $HOME/.local/share should be used. */
char *datadir = getenv("XDG_DATA_HOME");
if (datadir) {
user_appdata_path = datadir;
} else {
char *homedir = getenv("HOME");
if (homedir) {
user_appdata_path = std::string(homedir) + "/.local/share";
}
}
#endif
return user_appdata_path.append(PATH_SEPARATOR).append(PROGRAM_NAME).append(" Saves");
}
static std::string replace_with(std::string s, std::string old, char *new_str)
{
int pos;
while ((pos = s.find(old)) != std::string::npos)
s.replace(pos, old.length(), new_str);
return s;
}
static std::string sanitize_file_name(std::string name)
{
//I'm not sure all of these are necessary but just to be sure
if (name[0] == '.' && name.size() > 2 && (name[1] == '\\' || name[1] == '/')) name.erase(0, 2);
name = replace_with(name, PATH_SEPARATOR, ".SLASH.");
name = replace_with(name, "\\", ".SLASH.");
name = replace_with(name, "/", ".SLASH.");
name = replace_with(name, "|", ".V_SLASH.");
name = replace_with(name, ":", ".COLON.");
name = replace_with(name, "*", ".ASTERISK.");
name = replace_with(name, "\"", ".QUOTE.");
name = replace_with(name, "?", ".Q_MARK.");
return name;
}
static std::string desanitize_file_name(std::string name)
{
//I'm not sure all of these are necessary but just to be sure
name = replace_with(name, ".SLASH.", "/");
name = replace_with(name, ".B_SLASH.", "\\");
name = replace_with(name, ".F_SLASH.", "/");
name = replace_with(name, ".V_SLASH.", "|");
name = replace_with(name, ".COLON.", ":");
name = replace_with(name, ".ASTERISK.", "*");
name = replace_with(name, ".QUOTE.", "\"");
name = replace_with(name, ".Q_MARK.", "?");
return name;
}
Local_Storage::Local_Storage(std::string save_directory)
{
this->save_directory = save_directory;
if (this->save_directory.back() != *PATH_SEPARATOR) {
this->save_directory.append(PATH_SEPARATOR);
}
}
void Local_Storage::setAppId(uint32 appid)
{
this->appid = std::to_string(appid) + PATH_SEPARATOR;
}
int Local_Storage::store_file_data(std::string folder, std::string file, char *data, unsigned int length)
{
if (folder.back() != *PATH_SEPARATOR) {
folder.append(PATH_SEPARATOR);
}
file = sanitize_file_name(file);
create_directory(folder);
std::ofstream myfile;
myfile.open(folder + file, std::ios::binary | std::ios::out);
if (!myfile.is_open()) return -1;
myfile.write(data, length);
int pos = myfile.tellp();
myfile.close();
return pos;
}
std::string Local_Storage::get_path(std::string folder)
{
std::string path = save_directory + appid + folder;
create_directory(path);
return path;
}
std::string Local_Storage::get_global_settings_path()
{
return save_directory + SETTINGS_STORAGE_FOLDER + PATH_SEPARATOR;
}
std::vector<std::string> Local_Storage::get_filenames_path(std::string path)
{
if (path.back() != *PATH_SEPARATOR) {
path.append(PATH_SEPARATOR);
}
return get_filenames(path);
}
int Local_Storage::store_data(std::string folder, std::string file, char *data, unsigned int length)
{
if (folder.back() != *PATH_SEPARATOR) {
folder.append(PATH_SEPARATOR);
}
return store_file_data(save_directory + appid + folder, file, data, length);
}
int Local_Storage::store_data_settings(std::string file, char *data, unsigned int length)
{
return store_file_data(get_global_settings_path(), file, data, length);
}
int Local_Storage::get_file_data(std::string full_path, char *data, unsigned int max_length)
{
std::ifstream myfile;
myfile.open(full_path, std::ios::binary | std::ios::in);
if (!myfile.is_open()) return -1;
std::streampos size = myfile.tellg();
myfile.seekg (0, std::ios::beg);
if (size > max_length) max_length = size;
myfile.read (data, max_length);
myfile.close();
return myfile.gcount();
}
int Local_Storage::get_data(std::string folder, std::string file, char *data, unsigned int max_length)
{
file = sanitize_file_name(file);
if (folder.back() != *PATH_SEPARATOR) {
folder.append(PATH_SEPARATOR);
}
std::string full_path = save_directory + appid + folder + file;
return get_file_data(full_path, data, max_length);
}
int Local_Storage::get_data_settings(std::string file, char *data, unsigned int max_length)
{
file = sanitize_file_name(file);
std::string full_path = get_global_settings_path() + file;
return get_file_data(full_path, data, max_length);
}
int Local_Storage::count_files(std::string folder)
{
if (folder.back() != *PATH_SEPARATOR) {
folder.append(PATH_SEPARATOR);
}
return count_files_directory(save_directory + appid + folder);
}
bool Local_Storage::file_exists(std::string folder, std::string file)
{
file = sanitize_file_name(file);
if (folder.back() != *PATH_SEPARATOR) {
folder.append(PATH_SEPARATOR);
}
std::string full_path = save_directory + appid + folder + file;
struct stat buffer;
return (stat (full_path.c_str(), &buffer) == 0);
}
unsigned int Local_Storage::file_size(std::string folder, std::string file)
{
file = sanitize_file_name(file);
if (folder.back() != *PATH_SEPARATOR) {
folder.append(PATH_SEPARATOR);
}
std::string full_path = save_directory + appid + folder + file;
struct stat buffer = {};
if (stat (full_path.c_str(), &buffer) != 0) return 0;
return buffer.st_size;
}
bool Local_Storage::file_delete(std::string folder, std::string file)
{
file = sanitize_file_name(file);
if (folder.back() != *PATH_SEPARATOR) {
folder.append(PATH_SEPARATOR);
}
std::string full_path = save_directory + appid + folder + file;
return remove(full_path.c_str()) == 0;
}
uint64_t Local_Storage::file_timestamp(std::string folder, std::string file)
{
file = sanitize_file_name(file);
if (folder.back() != *PATH_SEPARATOR) {
folder.append(PATH_SEPARATOR);
}
std::string full_path = save_directory + appid + folder + file;
struct stat buffer = {};
if (stat (full_path.c_str(), &buffer) != 0) return 0;
return buffer.st_mtime;
}
bool Local_Storage::iterate_file(std::string folder, int index, char *output_filename, int32 *output_size)
{
if (folder.back() != *PATH_SEPARATOR) {
folder.append(PATH_SEPARATOR);
}
char temp[1024] = {};
if (get_filename_at_index(save_directory + appid + folder, temp, index)) {
std::string name = desanitize_file_name(temp);
if (output_size) *output_size = file_size(folder, name);
strcpy(output_filename, name.c_str());
return true;
}
return false;
}
bool Local_Storage::update_save_filenames(std::string folder)
{
int num_files = count_files(folder);
std::vector<std::string> files;
for (int i = 0; i < num_files; ++i) {
char out_folder[1024];
if (get_filename_at_index(save_directory + appid + folder, out_folder, i)) {
files.push_back(out_folder);
}
}
for (auto &path : files) {
PRINT_DEBUG("Local_Storage:: remote file %s\n", path.c_str());
std::string to = sanitize_file_name(desanitize_file_name(path));
if (path != to) {
std::string from = (save_directory + appid + folder + PATH_SEPARATOR + path);
to = (save_directory + appid + folder + PATH_SEPARATOR + to);
PRINT_DEBUG("Local_Storage::update_save_filenames renaming %s to %s\n", from.c_str(), to.c_str());
if (std::rename(from.c_str(), to.c_str()) < 0) {
PRINT_DEBUG("ERROR RENAMING\n");
}
}
}
return true;
}
#endif