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/*
* anylike
*
* anylike is a ...
*
*
* Copyright (C) 2009-2010 Markus Grueneis <gimpf@anylike.org>
* Christian Pointner <equinox@anylike.org>
*
* This file is part of anylike.
*
* anylike is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* anylike 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with anylike. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <lua50/lua.h>
#include "datatypes.h"
#include "options.h"
#include "log.h"
#include "l_log.h"
#ifndef USE_SSL_CRYPTO
#include <gcrypt.h>
#endif
#include "daemon.h"
#ifndef USE_SSL_CRYPTO
#define MIN_GCRYPT_VERSION "1.2.0"
int init_libgcrypt()
{
if(!gcry_check_version(MIN_GCRYPT_VERSION)) {
log_printf(NOTICE, "invalid Version of libgcrypt, should be >= %s", MIN_GCRYPT_VERSION);
return -1;
}
gcry_error_t err = gcry_control(GCRYCTL_DISABLE_SECMEM, 0);
if(err) {
log_printf(ERROR, "failed to disable secure memory: %s", gcry_strerror(err));
return -1;
}
err = gcry_control(GCRYCTL_INITIALIZATION_FINISHED);
if(err) {
log_printf(ERROR, "failed to finish libgcrypt initialization: %s", gcry_strerror(err));
return -1;
}
log_printf(NOTICE, "libgcrypt init finished");
return 0;
}
#endif
int main_loop(options_t* opt)
{
lua_State *L;
L = lua_open();
luaopen_base(L);
luaopen_string(L);
luaopen_log(L);
lua_dofile(L, "main_loop.lua");
lua_close(L);
return 0;
}
int main(int argc, char* argv[])
{
log_init();
options_t opt;
int ret = options_parse(&opt, argc, argv);
if(ret) {
if(ret > 0) {
fprintf(stderr, "syntax error near: %s\n\n", argv[ret]);
}
if(ret == -2) {
fprintf(stderr, "memory error on options_parse, exitting\n");
}
if(ret == -3) {
options_print_version();
}
if(ret != -2 && ret != -3)
options_print_usage();
if(ret == -1 || ret == -3)
ret = 0;
options_clear(&opt);
log_close();
exit(ret);
}
string_list_element_t* tmp = opt.log_targets_.first_;
if(!tmp) {
log_add_target("syslog:3,anylike,daemon");
}
else {
while(tmp) {
ret = log_add_target(tmp->string_);
if(ret) {
switch(ret) {
case -2: fprintf(stderr, "memory error on log_add_target, exitting\n"); break;
case -3: fprintf(stderr, "unknown log target: '%s', exitting\n", tmp->string_); break;
case -4: fprintf(stderr, "this log target is only allowed once: '%s', exitting\n", tmp->string_); break;
default: fprintf(stderr, "syntax error near: '%s', exitting\n", tmp->string_); break;
}
options_clear(&opt);
log_close();
exit(ret);
}
tmp = tmp->next_;
}
}
log_printf(NOTICE, "just started...");
options_parse_post(&opt);
priv_info_t priv;
if(opt.username_)
if(priv_init(&priv, opt.username_, opt.groupname_)) {
options_clear(&opt);
log_close();
exit(-1);
}
#ifndef USE_SSL_CRYPTO
ret = init_libgcrypt();
if(ret) {
log_printf(ERROR, "error on libgcrpyt initialization, exitting");
options_clear(&opt);
log_close();
exit(ret);
}
#endif
FILE* pid_file = NULL;
if(opt.pid_file_) {
pid_file = fopen(opt.pid_file_, "w");
if(!pid_file) {
log_printf(WARNING, "unable to open pid file: %s", strerror(errno));
}
}
if(opt.chroot_dir_)
if(do_chroot(opt.chroot_dir_)) {
options_clear(&opt);
log_close();
exit(-1);
}
if(opt.username_)
if(priv_drop(&priv)) {
options_clear(&opt);
log_close();
exit(-1);
}
if(opt.daemonize_) {
pid_t oldpid = getpid();
daemonize();
log_printf(INFO, "running in background now (old pid: %d)", oldpid);
}
if(pid_file) {
pid_t pid = getpid();
fprintf(pid_file, "%d", pid);
fclose(pid_file);
}
ret = main_loop(&opt);
options_clear(&opt);
if(!ret)
log_printf(NOTICE, "normal shutdown");
else if(ret < 0)
log_printf(NOTICE, "shutdown after error");
else
log_printf(NOTICE, "shutdown after signal");
log_close();
return ret;
}
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