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/* SPDX-License-Identifier: GPL-2.0 */
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "shared/utils.h"
#include "minecctl.h"
#include "server.h"
#include "misc.h"
#define INVALID(msg) do { *error = (msg); return false; } while(0)
bool server_read_config(struct cfg *cfg, struct server *server,
unsigned *lineno, const char **error)
{
char buf[4096];
size_t off = 0;
ssize_t r;
int dfd;
int fd;
if (!error)
return false;
if (!server)
INVALID("Invalid argument, server missing");
if (!lineno)
INVALID("Invalid argument, lineno not set");
if (!server->scfg.filename)
INVALID("Invalid argument, filename not set");
if (server->file_read)
return true;
*lineno = 0;
server->file_read = true;
dfd = open(cfg->cfgdir, O_DIRECTORY | O_PATH | O_CLOEXEC);
if (dfd < 0)
INVALID("failed to open configuration directory");
fd = openat(dfd, server->scfg.filename, O_RDONLY | O_CLOEXEC);
if (fd < 0)
INVALID("failed to open configuration file");
close(dfd);
while (true) {
r = read(fd, buf + off, sizeof(buf) - off - 1);
if (r < 0)
INVALID("failed to read configuration file");
else if (r == 0)
break;
off += r;
if (off == sizeof(buf) - 1)
INVALID("invalid, file too large");
}
buf[off] = '\0';
close(fd);
if (!scfg_parse(&server->scfg, buf, NULL, lineno, error))
return false;
if (!server->scfg.rcon_password)
verbose("rcon password not set");
if (list_empty(&server->scfg.rcons))
verbose("rcon address not found in %s", server->scfg.filename);
if (list_empty(&server->scfg.remotes))
verbose("mc server address not found in %s", server->scfg.filename);
return true;
}
struct server *server_get_default(struct cfg *cfg)
{
struct server *server;
unsigned lineno;
const char *error;
server = list_first_entry_or_null(&cfg->servers, struct server, list);
if (!server)
die("No servers defined");
if (!server_read_config(cfg, server, &lineno, &error)) {
error("server_read_config error: %s", error);
return NULL;
}
return server;
}
bool server_set_default(struct cfg *cfg, const char *name)
{
struct server *server;
assert_die(cfg, "invalid arguments");
list_for_each_entry(server, &cfg->servers, list) {
if (streq(name, server->name)) {
list_rotate_to_front(&server->list, &cfg->servers);
return true;
}
}
return false;
}
void server_load_all_known(struct cfg *cfg)
{
struct dirent *dent;
DIR *dir;
dir = opendir(cfg->cfgdir);
if (!dir) {
info("Can't open config directory %s: %m", cfg->cfgdir);
return;
}
while ((dent = readdir(dir))) {
struct server *server;
char *suffix;
if (!config_valid_server_filename(dent, NULL))
continue;
server = server_new(dent->d_name);
suffix = strrchr(dent->d_name, '.');
assert_die(suffix, "Error parsing filename");
*suffix = '\0';
server->name = xstrdup(dent->d_name);
list_add(&server->list, &cfg->servers);
}
closedir(dir);
}
void server_free_all(struct cfg *cfg)
{
struct server *server, *tmp;
list_for_each_entry_safe(server, tmp, &cfg->servers, list)
server_free(server);
}
void server_free(struct server *server)
{
scfg_delete(&server->scfg);
xfree(server->name);
xfree(server);
}
struct server *server_new(const char *filename)
{
struct server *server;
server = zmalloc(sizeof(*server));
scfg_init(&server->scfg, filename);
INIT_LIST_HEAD(&server->list);
return server;
}
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