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Only attempt a config migration once per launch

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This commit is contained in:
Cameron Gutman 2024-03-15 00:15:55 -05:00
parent aa1985dec8
commit 8c9e14e335
1 changed files with 50 additions and 45 deletions
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95
src/platform/linux/misc.cpp
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@ -106,57 +106,62 @@ namespace platf {
*/
fs::path
appdata() {
bool found = false;
bool migrate_config = true;
const char *dir;
const char *homedir;
const char *migrate_envvar;
fs::path config_path;
static std::once_flag migration_flag;
static fs::path config_path;
// Get the home directory
if ((homedir = getenv("HOME")) == nullptr || strlen(homedir) == 0) {
// If HOME is empty or not set, use the current user's home directory
homedir = getpwuid(geteuid())->pw_dir;
}
// Ensure migration is only attempted once
std::call_once(migration_flag, []() {
bool found = false;
bool migrate_config = true;
const char *dir;
const char *homedir;
const char *migrate_envvar;
// May be set if running under a systemd service with the ConfigurationDirectory= option set.
if ((dir = getenv("CONFIGURATION_DIRECTORY")) != nullptr && strlen(dir) > 0) {
found = true;
config_path = fs::path(dir) / "sunshine"sv;
}
// Otherwise, follow the XDG base directory specification:
// https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
if (!found && (dir = getenv("XDG_CONFIG_HOME")) != nullptr && strlen(dir) > 0) {
found = true;
config_path = fs::path(dir) / "sunshine"sv;
}
// As a last resort, use the home directory
if (!found) {
migrate_config = false;
config_path = fs::path(homedir) / ".config/sunshine"sv;
}
// Get the home directory
if ((homedir = getenv("HOME")) == nullptr || strlen(homedir) == 0) {
// If HOME is empty or not set, use the current user's home directory
homedir = getpwuid(geteuid())->pw_dir;
}
// migrate from the old config location if necessary
migrate_envvar = getenv("SUNSHINE_MIGRATE_CONFIG");
if (migrate_config && found && migrate_envvar && strcmp(migrate_envvar, "1") == 0) {
fs::path old_config_path = fs::path(homedir) / ".config/sunshine"sv;
if (old_config_path != config_path && fs::exists(old_config_path)) {
if (!fs::exists(config_path)) {
std::cout << "Migrating config from "sv << old_config_path << " to "sv << config_path << std::endl;
std::error_code ec;
fs::rename(old_config_path, config_path, ec);
if (ec) {
std::cerr << "Migration failed: " << ec.message() << std::endl;
return old_config_path;
// May be set if running under a systemd service with the ConfigurationDirectory= option set.
if ((dir = getenv("CONFIGURATION_DIRECTORY")) != nullptr && strlen(dir) > 0) {
found = true;
config_path = fs::path(dir) / "sunshine"sv;
}
// Otherwise, follow the XDG base directory specification:
// https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
if (!found && (dir = getenv("XDG_CONFIG_HOME")) != nullptr && strlen(dir) > 0) {
found = true;
config_path = fs::path(dir) / "sunshine"sv;
}
// As a last resort, use the home directory
if (!found) {
migrate_config = false;
config_path = fs::path(homedir) / ".config/sunshine"sv;
}
// migrate from the old config location if necessary
migrate_envvar = getenv("SUNSHINE_MIGRATE_CONFIG");
if (migrate_config && found && migrate_envvar && strcmp(migrate_envvar, "1") == 0) {
fs::path old_config_path = fs::path(homedir) / ".config/sunshine"sv;
if (old_config_path != config_path && fs::exists(old_config_path)) {
if (!fs::exists(config_path)) {
std::cout << "Migrating config from "sv << old_config_path << " to "sv << config_path << std::endl;
std::error_code ec;
fs::rename(old_config_path, config_path, ec);
if (ec) {
std::cerr << "Migration failed: " << ec.message() << std::endl;
config_path = old_config_path;
}
}
else {
// We cannot use Boost logging because it hasn't been initialized yet!
std::cerr << "Config exists in both "sv << old_config_path << " and "sv << config_path << ". Using "sv << config_path << " for config" << std::endl;
std::cerr << "It is recommended to remove "sv << old_config_path << std::endl;
}
}
else {
// We cannot use Boost logging because it hasn't been initialized yet!
std::cerr << "Config exists in both "sv << old_config_path << " and "sv << config_path << ". Using "sv << config_path << " for config" << std::endl;
std::cerr << "It is recommended to remove "sv << old_config_path << std::endl;
}
}
}
});
return config_path;
}