2024-10-10
This commit is contained in:
212
core/judged/judgehub.cc
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212
core/judged/judgehub.cc
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/*
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* Copyright 2021 zhblue <newsclan@gmail.com>
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*
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* This file is part of HUSTOJ.
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*
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* HUSTOJ is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* HUSTOJ is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with HUSTOJ. if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <time.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <syslog.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <sys/wait.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <signal.h>
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#include <sys/resource.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#define BUFFER_SIZE 1024
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static char oj_udpserver[BUFFER_SIZE]="127.0.0.1";
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static int oj_udpport=2008;
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static int oj_udp_fd;
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static char oj_hub_base[BUFFER_SIZE]="/home/saas";
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static bool STOP = false;
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static int DEBUG = 0;
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void wait_udp_msg(int fd)
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{
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char buf[BUFFER_SIZE]; //......1024..
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char dir[BUFFER_SIZE]; //......1024..
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char cmd[BUFFER_SIZE<<2]; //......1024..
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char cnf[BUFFER_SIZE<<2]; //......1024..
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socklen_t len;
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int count;
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struct sockaddr_in clent_addr; //clent_addr............
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memset(buf, 0, BUFFER_SIZE);
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len = sizeof(clent_addr);
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count = recvfrom(fd, buf, BUFFER_SIZE, 0, (struct sockaddr*)&clent_addr, &len); //recvfrom.......
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if(count == -1)
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{
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printf("recieve data fail!\n");
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return;
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}
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printf("task msg:%s\n",buf); //..client......
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sscanf(buf,"%s\n",dir);
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sprintf(cmd,"judged %s/%s/ debug 4",oj_hub_base,dir); //..client......
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sprintf(cnf,"%s/%s/etc/judge.conf",oj_hub_base,dir);
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struct stat cnfstat;
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if(stat(cnf,&cnfstat)){
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printf("%s read fail...\n",cnf);
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}else{
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struct timeval now;
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gettimeofday(&now,NULL);
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printf(" now_time:%ld\n",now.tv_sec);
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printf("cnf_mtime:%ld\n",cnfstat.st_mtime);
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if(fork()==0){
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printf("%s\n",cmd);
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exit(system(cmd));
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}else{
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waitpid(-1, NULL, WNOHANG);
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}
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}
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memset(buf, 0, BUFFER_SIZE);
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// sprintf(buf, "I have recieved %d bytes data!\n", count); //..client
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// printf("server:%s\n",buf); //..........
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// sendto(fd, buf, BUFF_LEN, 0, (struct sockaddr*)&clent_addr, len); //.....client......clent_addr.....
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}
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void call_for_exit(int s) {
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STOP = true;
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printf("Stopping judge hub ...\n");
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}
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void write_log(const char *fmt, ...) {
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va_list ap;
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char buffer[4096];
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// time_t t = time(NULL);
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// int l;
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sprintf(buffer, "/var/log/judgehub.log");
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FILE *fp = fopen(buffer, "ae+");
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if (fp == NULL) {
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fprintf(stderr, "openfile error!\n");
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}
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va_start(ap, fmt);
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vsprintf(buffer, fmt, ap);
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fprintf(fp, "%s\n", buffer);
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if (DEBUG)
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printf("%s\n", buffer);
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va_end(ap);
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fclose(fp);
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}
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int lockfile(int fd) {
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struct flock fl;
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fl.l_type = F_WRLCK;
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fl.l_start = 0;
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fl.l_whence = SEEK_SET;
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fl.l_len = 0;
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return (fcntl(fd, F_SETLK, &fl));
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}
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int daemon_init(void)
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{
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pid_t pid;
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if ((pid = fork()) < 0)
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return (-1);
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else if (pid != 0)
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exit(0); /* parent exit */
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/* child continues */
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setsid(); /* become session leader */
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umask(0); /* clear file mode creation mask */
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close(0); /* close stdin */
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close(1); /* close stdout */
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close(2); /* close stderr */
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int fd = open( "/dev/null", O_RDWR );
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dup2( fd, 0 );
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dup2( fd, 1 );
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dup2( fd, 2 );
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if ( fd > 2 ){
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close( fd );
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}
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return (0);
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}
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void turbo_mode2(){
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#ifdef _mysql_h
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if(turbo_mode==2){
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char sql[BUFFER_SIZE];
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sprintf(sql," CALL `sync_result`();");
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if (mysql_real_query(conn, sql, strlen(sql)));
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}
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#endif
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}
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int main(int argc, char** argv) {
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int oj_udp_ret=0;
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DEBUG = argc>3 ;
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if(argc >1){
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strcpy(oj_hub_base,argv[1]);
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}else{
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printf("check out https://github.com/zhblue/hustoj/blob/master/wiki/JudgeHub.md \n");
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}
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if(argc >2){
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sscanf(argv[2],"%d",&oj_udpport);
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}
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if (!DEBUG)
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daemon_init();
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oj_udp_fd = socket(AF_INET, SOCK_DGRAM, 0);
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if(oj_udp_fd<0){
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printf("udp fd open failed! \n");
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exit(-1);
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}
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struct sockaddr_in ser_addr;
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memset(&ser_addr, 0, sizeof(ser_addr));
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ser_addr.sin_family = AF_INET;
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ser_addr.sin_addr.s_addr = inet_addr(oj_udpserver);
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ser_addr.sin_port = htons(oj_udpport);
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struct timeval timeOut;
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timeOut.tv_sec = 60 ; //..5s..
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timeOut.tv_usec = 0;
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if (setsockopt(oj_udp_fd, SOL_SOCKET, SO_RCVTIMEO, &timeOut, sizeof(timeOut)) < 0)
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{
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printf("time out setting failed\n");
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}
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oj_udp_ret=bind(oj_udp_fd, (struct sockaddr*)&ser_addr, sizeof(ser_addr));
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if(oj_udp_ret<0)
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printf("udp fd open failed! \n");
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//signal(SIGQUIT, call_for_exit);
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//signal(SIGINT, call_for_exit);
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//signal(SIGTERM, call_for_exit);
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while (!STOP) { // start to run until call for exit
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printf("waiting task:%d\n",oj_udpport);
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if(STOP) return 100;
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wait_udp_msg(oj_udp_fd);
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if(DEBUG) printf("udp job ... \n");
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waitpid(-1, NULL, WNOHANG);
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}
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return 0;
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}
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