static bool load_or_save_variables(bool save)
{
const wcstring wdir = fishd_get_config();
const std::string dir = wcs2string(wdir);
if (dir.empty())
return false;
const std::string machine_id = get_machine_identifier();
const std::string machine_id_path = get_variables_file_path(dir, machine_id);
bool success = load_or_save_variables_at_path(save, machine_id_path);
if (! success && ! save && errno == ENOENT)
{
/* We failed to load, because the file was not found. Older fish used the hostname only. Try *moving* the filename based on the hostname into place; if that succeeds try again. Silently "upgraded." */
std::string hostname_id;
if (get_hostname_identifier(&hostname_id) && hostname_id != machine_id)
{
std::string hostname_path = get_variables_file_path(dir, hostname_id);
if (0 == rename(hostname_path.c_str(), machine_id_path.c_str()))
{
/* We renamed - try again */
success = load_or_save_variables_at_path(save, machine_id_path);
}
}
}
return success;
}
static wcstring default_vars_path()
{
wcstring wdir = fishd_get_config();
const std::string dir = wcs2string(wdir);
if (dir.empty())
return L"";
const std::string machine_id = get_machine_identifier();
const std::string machine_id_path = get_variables_file_path(dir, machine_id);
return str2wcstring(machine_id_path);
}
/**
Load or save all variables
*/
static void load_or_save( int save)
{
const wcstring wdir = fishd_get_config();
char hostname[HOSTNAME_LEN];
connection_t c;
int fd;
if (wdir.empty())
return;
std::string dir = wcs2string( wdir );
gethostname( hostname, HOSTNAME_LEN );
std::string name;
name.append(dir);
name.append("/");
name.append(FILE);
name.append(hostname);
debug( 4, L"Open file for %s: '%s'",
save?"saving":"loading",
name.c_str() );
/* OK to not use CLO_EXEC here because fishd is single threaded */
fd = open(name.c_str(), save?(O_CREAT | O_TRUNC | O_WRONLY):O_RDONLY, 0600);
if( fd == -1 )
{
debug( 1, L"Could not open load/save file. No previous saves?" );
wperror( L"open" );
return;
}
debug( 4, L"File open on fd %d", c.fd );
connection_init( &c, fd );
if( save )
{
write_loop( c.fd, SAVE_MSG, strlen(SAVE_MSG) );
enqueue_all( &c );
}
else
read_message( &c );
connection_destroy( &c );
}
