相关代码...主要是check_ID_lists这个函数我看不懂...:(
src/newmain_single.c:
#ifdef CHECK_CONNECT
if(check_ID_lists(getCurrentUser()->userid)) {
prints("你的连接频率过高，byebye!");
oflush();
sleep(1);
exit(1);
}
#endif
libBBS/stuff.c:
#define MAXLIST 1000
int check_ID_lists(char * id)
{
int i;
FILE* fp;
struct stat st;
struct flock ldata;
int fd;
char fn[80];
int found=0,min=0,ret=0;
time_t now;
struct id_struct{
char id[IDLEN+2];
time_t first,last;
int t;
} ids[MAXLIST];
sprintf(fn, ".IDlists");
if(stat(fn,&st)==-1) {
memset(ids, 0, sizeof(struct id_struct)*MAXLIST);
fd=open(fn, O_WRONLY|O_CREAT, 0600);
write(fd, ids, sizeof(struct id_struct)*MAXLIST);
close(fd);
}
now = time(0);
if(id[0]==0) return 0;
if(!strcmp(id, "guest")) return 0;
fd = open(fn, O_RDWR, 0600);
ldata.l_type = F_WRLCK;
ldata.l_whence = 0;
ldata.l_len = 0;
ldata.l_start = 0;
if (fcntl(fd, F_SETLKW, &ldata) == -1) {
bbslog("user", "%s", "reclock err");
close(fd);
return 0; /* lock error*/
}
read(fd, ids, sizeof(struct id_struct)*MAXLIST);
for(i=0;i<MAXLIST;i++) {
if((double)(now-ids[i].last)>60*60) {
ids[i].id[0]=0;
}
if(!strncmp(ids[i].id, id, IDLEN)){
if((double)(now-ids[i].last)<=ID_CONNECT_CON_THRESHOLD2) {
fp=fopen(".IDdenys", "a");
if(fp){
fprintf(fp, "0 %ld %s %d\n", now, id, ids[i].t);
fclose(fp);
}
if((double)(now-ids[i].last)<=5.0)
ret = 1;
}
found=1;
ids[i].last = now;
ids[i].t++;
if(ret==0)
if(ids[i].t>=10&&(ids[i].t/(double)(ids[i].last-ids[i].first)>=ID_CONNECT_CON_THRESHOLD)) {
fp=fopen(".IDdenys", "a");
if(fp){
fprintf(fp, "1 %ld %s %d\n", now, id, ids[i].t);
fclose(fp);
}
if(ids[i].t/(double)(ids[i].last-ids[i].first)>=100.0/60/60)
ret = 1;
}
break;
}
if(ids[i].last<ids[min].last) min = i;
}
if(!found) {
strcpy(ids[min].id, id);
ids[min].first = now;
ids[min].last = now;
ids[min].t = 1;
}
lseek(fd, 0, SEEK_SET);
write(fd, ids, sizeof(struct id_struct)*MAXLIST);
ldata.l_type = F_UNLCK;
fcntl(fd, F_SETLKW, &ldata); /* 退出互斥区域*/
close(fd);
return ret;
}
【 在 roctall (蛇王阿奔) 的大作中提到: 】
: 我是先grep过了，看不明白.....
: 后来解决前面的问题时候开始用gdb，才想到用gdb来看看
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