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/*
* rhctl
*
* Copyright (C) 2009-2014 Christian Pointner <equinox@helsinki.at>
*
* This file is part of rhctl.
*
* rhctl 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.
*
* rhctl 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 rhctl. If not, see <http://www.gnu.org/licenses/>.
*/
#include "datatypes.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "log.h"
#include "sig_handler.h"
#include "options.h"
#include "daemon.h"
#include "utils.h"
int process_cmd(const char* cmd, int fd, cmd_t **cmd_q, client_t* client_lst, options_t* opt)
{
return 0;
}
int process_data(int src_fd, int dest_fd)
{
char* buffer[100];
int ret = read(src_fd, buffer, 100);
if(!ret)
return 2;
if(ret == -1 && errno == EAGAIN)
return 0;
if(ret < 0)
return ret;
log_printf(DEBUG, "read %d bytes from fd (%d)", ret, src_fd);
int len = ret;
int offset = 0;
for(;;) {
ret = write(dest_fd, &buffer[offset], len - offset);
if(ret < 0) {
if(errno != EINTR)
return ret;
ret = 0;
}
offset += ret;
if(offset+1 >= len)
break;
}
return 0;
}
int main_loop(int cmd_fd, options_t* opt)
{
log_printf(NOTICE, "entering main loop");
fd_set readfds, tmpfds;
FD_ZERO(&readfds);
FD_SET(0, &readfds);
FD_SET(cmd_fd, &readfds);
int max_fd = cmd_fd;
int sig_fd = signal_init();
if(sig_fd < 0)
return -1;
FD_SET(sig_fd, &readfds);
max_fd = (max_fd < sig_fd) ? sig_fd : max_fd;
int return_value = 0;
while(!return_value) {
memcpy(&tmpfds, &readfds, sizeof(tmpfds));
int ret = select(max_fd+1, &tmpfds, NULL, NULL, NULL);
if(ret == -1 && errno != EINTR) {
log_printf(ERROR, "select returned with error: %s", strerror(errno));
return_value = -1;
break;
}
if(ret == -1 || !ret)
continue;
if(FD_ISSET(sig_fd, &tmpfds))
if(signal_handle())
return_value = 1;
if(FD_ISSET(0, &tmpfds))
return_value = process_data(0, cmd_fd);
if(FD_ISSET(cmd_fd, &tmpfds))
return_value = process_data(cmd_fd, 1);
}
signal_stop();
return return_value;
}
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, exiting\n");
}
if(ret != -2)
options_print_usage();
options_clear(&opt);
log_close();
exit(ret);
}
string_list_element_t* tmp = opt.log_targets_.first_;
if(!tmp) {
log_add_target("stderr:2");
}
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...");
if(options_parse_post(&opt)) {
options_clear(&opt);
log_close();
exit(-1);
}
int cmd_fd = connect_command_socket(opt.command_sock_);
if(cmd_fd < 0) {
options_clear(&opt);
log_close();
exit(-1);
}
ret = main_loop( cmd_fd, &opt);
close(cmd_fd);
if(!ret)
log_printf(NOTICE, "normal shutdown");
else if(ret < 0)
log_printf(NOTICE, "shutdown after error (code %d)", ret);
else
log_printf(NOTICE, "shutdown after signal");
options_clear(&opt);
log_close();
return ret;
}
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