diff options
Diffstat (limited to 'daemon/cached/utmpserver2.c')
| -rw-r--r-- | daemon/cached/utmpserver2.c | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/daemon/cached/utmpserver2.c b/daemon/cached/utmpserver2.c new file mode 100644 index 00000000..12c3a299 --- /dev/null +++ b/daemon/cached/utmpserver2.c @@ -0,0 +1,290 @@ +/* $Id$ */ +#include <stdio.h> +#include <sys/time.h> + +#include "bbs.h" + +extern void utmplogin(int uid, int index, const int like[MAX_FRIEND], const int hate[MAX_REJECT]); +extern int genfriendlist(int uid, int index, ocfs_t *fs, int maxfs); +extern void utmplogoutall(void); +#ifdef FAKEDATA +FILE *fp; +#endif +#ifdef UTMPLOG +FILE *logfp; +#endif + +clock_t begin_clock; +time_t begin_time; +int count_flooding, count_login; + +#ifdef NOFLOODING +/* 0 ok, 1 delay action, 2 reject */ +int action_frequently(int uid) +{ + int i; + time_t now = time(NULL); + time_t minute = now/60; + time_t hour = minute/60; + + static time_t flood_base_minute; + static time_t flood_base_hour; + static struct { + unsigned short lastlogin; // truncated time_t + unsigned char minute_count; + unsigned char hour_count; + } flooding[MAX_USERS]; + + if(minute!=flood_base_minute) { + for(i=0; i<MAX_USERS; i++) + flooding[i].minute_count=0; + flood_base_minute=minute; + } + if(hour!=flood_base_hour) { + for(i=0; i<MAX_USERS; i++) + flooding[i].hour_count=0; + flood_base_hour=hour; + } + + if(abs(flooding[uid].lastlogin-(unsigned short)now)<=3 || + flooding[uid].minute_count>30 || + flooding[uid].hour_count>60) { + count_flooding++; + return 2; + } + + flooding[uid].minute_count++; + flooding[uid].hour_count++; + flooding[uid].lastlogin=now; + + if(flooding[uid].minute_count>5 || + flooding[uid].hour_count>20) { + count_flooding++; + return 1; + } + return 0; +} +#endif /* NOFLOODING */ + +void syncutmp(int cfd) { + int i; + int like[MAX_FRIEND]; + int hate[MAX_REJECT]; + +#ifdef UTMPLOG + int x=-1; + if(logfp && ftell(logfp)> 500*(1<<20)) { + fclose(logfp); + logfp=NULL; + } + if(logfp) fwrite(&x, sizeof(x), 1, logfp); +#endif + + printf("logout all\n"); + utmplogoutall(); + fprintf(stderr,"sync begin\n"); + for(i=0; i<USHM_SIZE; i++) { + int uid; +#ifdef FAKEDATA + fread(&uid, sizeof(uid), 1, fp); + if(uid==-2) + break; + fread(like, sizeof(like), 1, fp); + fread(hate, sizeof(hate), 1, fp); +#else + if( toread(cfd, &uid, sizeof(uid)) <= 0 || + toread(cfd, like, sizeof(like)) <= 0 || + toread(cfd, hate, sizeof(hate)) <= 0) + break; +#endif +#ifdef UTMPLOG + if(logfp) { + fwrite(&uid, sizeof(uid), 1, logfp); + fwrite(like, sizeof(like), 1, logfp); + fwrite(hate, sizeof(hate), 1, logfp); + } +#endif + + if(uid != 0) + utmplogin(uid, i, like, hate); + } + if(i<USHM_SIZE) { +#ifdef UTMPLOG + int x=-2; + if(logfp) fwrite(&x, sizeof(x), 1, logfp); +#endif + } + + fprintf(stderr,"sync end\n"); +} + +void processlogin(int cfd, int uid, int index) +{ + int like[MAX_FRIEND]; + int hate[MAX_REJECT]; + /* 因為 logout 的時候並不會通知 utmpserver , 可能會查到一些 + 已經 logout 的帳號。所以不能只取 MAX_FRIEND 而要多取一些 */ +#define MAX_FS (2 * MAX_FRIEND) + int res; + int nfs; + ocfs_t fs[MAX_FS]; + +#ifdef FAKEDATA + fread(like, sizeof(like), 1, fp); + fread(hate, sizeof(hate), 1, fp); +#else + if(toread(cfd, like, sizeof(like)) <= 0 || + toread(cfd, hate, sizeof(hate)) <= 0) + return; +#endif +#ifdef UTMPLOG + if(logfp) { + int x=-3; + fwrite(&x, sizeof(x), 1, logfp); + fwrite(&uid, sizeof(uid), 1, logfp); + fwrite(&index, sizeof(index), 1, logfp); + fwrite(like, sizeof(like), 1, logfp); + fwrite(hate, sizeof(hate), 1, logfp); + } +#endif + + utmplogin(uid, index, like, hate); + nfs=genfriendlist(uid, index, fs, MAX_FS); +#ifndef FAKEDATA + res=0; +#ifdef NOFLOODING + res=action_frequently(uid); +#endif + towrite(cfd, &res, sizeof(res)); + towrite(cfd, &nfs, sizeof(nfs)); + towrite(cfd, fs, sizeof(ocfs_t) * nfs); +#endif +} + +void showstat(void) +{ + clock_t now_clock=clock(); + time_t now_time=time(0); + + time_t used_time=now_time-begin_time; + clock_t used_clock=now_clock-begin_clock; + + printf("%.24s : real %.0f cpu %.2f : %d login %d flood, %.2f login/sec, %.2f%% load.\n", + ctime(&now_time), (double)used_time, (double)used_clock/CLOCKS_PER_SEC, + count_login, count_flooding, + (double)count_login/used_time, (double)used_clock/CLOCKS_PER_SEC/used_time*100); + + begin_time=now_time; + begin_clock=now_clock; + count_login=0; + count_flooding=0; +} + +int main(int argc, char *argv[]) +{ + struct sockaddr_in clientaddr; + int ch, port = 5120, sfd, cfd, len; + char *iface_ip = NULL; + int cmd; + int uid,index; + int fail; + int firstsync=0; + +#ifdef UTMPLOG + logfp = fopen("utmp.log","a"); + if(logfp && ftell(logfp)> 500*(1<<20)) { + fclose(logfp); + logfp=NULL; + } +#endif + + Signal(SIGPIPE, SIG_IGN); + while( (ch = getopt(argc, argv, "p:i:h")) != -1 ) + switch( ch ){ + case 'p': + port = atoi(optarg); + break; + case 'i': + iface_ip = optarg; + break; + case 'h': + default: + fprintf(stderr, "usage: utmpserver [-i interface_ip] [-p port]\n"); + return 1; + } + +#ifdef FAKEDATA + fp=fopen("utmp.data","rb"); +#else + if( (sfd = tobind(iface_ip, port)) < 0 ) + return 1; +#endif + while(1) { +#ifdef FAKEDATA + if(fread(&cmd, sizeof(cmd), 1, fp)==0) break; +#else + len = sizeof(clientaddr); + if( (cfd = accept(sfd, (struct sockaddr *)&clientaddr, &len)) < 0 ){ + if( errno != EINTR ) + sleep(1); + continue; + } + toread(cfd, &cmd, sizeof(cmd)); +#endif + + if(cmd==-1) { + syncutmp(cfd); +#ifndef FAKEDATA + close(cfd); +#endif + firstsync=1; + continue; + } + if(!firstsync) { + // don't accept client before first sync, to prevent incorrect friend data + close(cfd); + continue; + } + + fail=0; +#ifdef FAKEDATA + fread(&uid, sizeof(uid), 1, fp); + fread(&index, sizeof(index), 1, fp); +#else + if(cmd==-2) { + if(toread(cfd, &index, sizeof(index)) <= 0) + fail=1; + if(toread(cfd, &uid, sizeof(uid)) <= 0) + fail=1; + } else if(cmd>=0) { + // old client + fail=1; + } else { + printf("unknown cmd=%d\n",cmd); + } +#endif + if(index>=USHM_SIZE) { + fprintf(stderr, "bad index=%d\n",index); + fail=1; + } + + if(fail) { +#ifndef FAKEDATA + close(cfd); +#endif + continue; + } + + count_login++; + processlogin(cfd, uid, index); + if(count_login>=4000 || time(NULL)-begin_time>30*60) + showstat(); +#ifndef FAKEDATA + close(cfd); +#endif + } +#ifdef FAKEDATA + fclose(fp); +#endif + return 0; +} |