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#include "../include/Storage.hpp"
#include "../include/env.hpp"
#include <stdio.h>
#include <assert.h>
#include <json/reader.h>
#include <json/writer.h>
#if OS_FAMILY == OS_FAMILY_POSIX
#include <pwd.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#endif
static int makedir(const char *path) {
return mkdir(path, S_IRWXU);
}
namespace QuickMedia {
Path get_home_dir()
{
#if OS_FAMILY == OS_FAMILY_POSIX
const char *homeDir = getenv("HOME");
if(!homeDir)
{
passwd *pw = getpwuid(getuid());
homeDir = pw->pw_dir;
}
return homeDir;
#elif OS_FAMILY == OS_FAMILY_WINDOWS
BOOL ret;
HANDLE hToken;
std::wstring homeDir;
DWORD homeDirLen = MAX_PATH;
homeDir.resize(homeDirLen);
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_READ, &hToken))
throw std::runtime_error("Failed to open process token");
if (!GetUserProfileDirectory(hToken, &homeDir[0], &homeDirLen))
{
CloseHandle(hToken);
throw std::runtime_error("Failed to get home directory");
}
CloseHandle(hToken);
homeDir.resize(wcslen(homeDir.c_str()));
return boost::filesystem::path(homeDir);
#endif
}
Path get_storage_dir() {
return get_home_dir().join(".config").join("quickmedia");
}
Path get_cache_dir() {
return get_home_dir().join(".cache").join("quickmedia");
}
int get_cookies_filepath(Path &path, const std::string &plugin_name) {
Path cookies_dir = get_storage_dir().join("cookies");
int res = create_directory_recursive(cookies_dir);
if(res != 0)
return res;
path = cookies_dir;
path.join(plugin_name).append(".txt");
return 0;
}
int create_directory_recursive(const Path &path) {
size_t index = 0;
while(true) {
index = path.data.find('/', index);
// Skips first '/', we don't want to try and create the root directory
if(index == 0) {
++index;
continue;
}
std::string path_component = path.data.substr(0, index);
int err = makedir(path_component.c_str());
if(err == -1 && errno != EEXIST)
return err;
if(index == std::string::npos)
break;
else
++index;
}
return 0;
}
FileType get_file_type(const Path &path) {
struct stat file_stat;
if(stat(path.data.c_str(), &file_stat) == 0)
return S_ISREG(file_stat.st_mode) ? FileType::REGULAR : FileType::DIRECTORY;
return FileType::FILE_NOT_FOUND;
}
int file_get_content(const Path &path, std::string &result) {
FILE *file = fopen(path.data.c_str(), "rb");
if(!file)
return -errno;
fseek(file, 0, SEEK_END);
long file_size = ftell(file);
if(file_size == -1) {
fprintf(stderr, "Error: attempted to read directory %s as a file\n", path.data.c_str());
fclose(file);
return -1;
}
fseek(file, 0, SEEK_SET);
result.resize(file_size);
fread(&result[0], 1, file_size, file);
fclose(file);
return 0;
}
int file_overwrite(const Path &path, const std::string &data) {
FILE *file = fopen(path.data.c_str(), "wb");
if(!file)
return -1;
if(fwrite(data.data(), 1, data.size(), file) != data.size()) {
fclose(file);
return -1;
}
return fclose(file);
}
void for_files_in_dir(const Path &path, FileIteratorCallback callback) {
for(auto &p : std::filesystem::directory_iterator(path.data)) {
if(!callback(p.path()))
break;
}
}
void for_files_in_dir_sort_last_modified(const Path &path, FileIteratorCallback callback) {
std::vector<std::filesystem::directory_entry> paths;
for(auto &p : std::filesystem::directory_iterator(path.data)) {
paths.push_back(p);
}
std::sort(paths.begin(), paths.end(), [](const std::filesystem::directory_entry &path1, std::filesystem::directory_entry &path2) {
return path1.last_write_time() > path2.last_write_time();
});
for(auto &p : paths) {
if(!callback(p.path()))
break;
}
}
bool read_file_as_json(const Path &filepath, Json::Value &result) {
std::string file_content;
if(file_get_content(filepath, file_content) != 0) {
fprintf(stderr, "Failed to get content of file: %s\n", filepath.data.c_str());
return false;
}
Json::CharReaderBuilder json_builder;
std::unique_ptr<Json::CharReader> json_reader(json_builder.newCharReader());
std::string json_errors;
if(!json_reader->parse(file_content.data(), file_content.data() + file_content.size(), &result, &json_errors)) {
fprintf(stderr, "Failed to read file %s as json, error: %s\n", filepath.data.c_str(), json_errors.c_str());
return false;
}
return true;
}
bool save_json_to_file_atomic(const Path &path, const Json::Value &json) {
Path tmp_path = path;
tmp_path.append(".tmp");
Json::StreamWriterBuilder json_builder;
if(file_overwrite(tmp_path, Json::writeString(json_builder, json)) != 0)
return false;
// Rename is atomic under posix!
if(rename(tmp_path.data.c_str(), path.data.c_str()) != 0) {
perror("save_json_to_file_atomic rename");
return false;
}
return true;
}
}
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