- (internal) directory layout structure finetune

git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@4022 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

1 files changed, 290 insertions, 0 deletions

diff --git a/daemon/utmpd/utmpserver2.c b/daemon/utmpd/utmpserver2.c
new file mode 100644
index 00000000..12c3a299
--- /dev/null
+++ b/daemon/utmpd/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;
+}