path: root/util/shmctl.c

/* $Id: shmctl.c,v 1.26 2002/08/07 03:48:52 in2 Exp $ */
#include "bbs.h"

extern SHM_t   *SHM;

int logout_friend_online(userinfo_t *utmp)
{
    int i, j, k;
    int offset=(int) (utmp - &SHM->uinfo[0]);
    userinfo_t *ui;
    while(utmp->friendtotal){
    if( !(0 <= utmp->friendtotal && utmp->friendtotal < MAX_FRIEND) )
        return 1;
    i = utmp->friendtotal-1;
    j = (utmp->friend_online[i] & 0xFFFFFF);
    if( !(0 <= j && j < MAX_ACTIVE) )
        printf("\tonline friend error(%d)\n", j);
    else{
        utmp->friend_online[i]=0;
        ui = &SHM->uinfo[j]; 
        if(ui->pid && ui!=utmp){
        for(k=0; k<ui->friendtotal && 
            (int)(ui->friend_online[k] & 0xFFFFFF) !=offset; k++);
        if(k<ui->friendtotal){
            ui->friendtotal--;
            ui->friend_online[k]=ui->friend_online[ui->friendtotal];
            ui->friend_online[ui->friendtotal]=0;
        }
        }
    }
    utmp->friendtotal--;
    utmp->friend_online[utmp->friendtotal]=0;
    }
    return 0;
}

void purge_utmp(userinfo_t *uentp)
{
    logout_friend_online(uentp);
    //memset(uentp, 0, sizeof(userinfo_t));
}

int utmpfix(int argc, char **argv)
{
    int     i, fast = 0;
    time_t  now, timeout = -1;
    char    *clean, buf[1024], ch;

    while( (ch = getopt(argc, argv, "nt:")) != -1 )
    switch( ch ){
    case 'n':
        fast = 1;
        break;
    case 't':
        timeout = atoi(optarg);
        break;
    default:
        printf("usage:\tshmctl\tutmpfix [-n] [-t timeout]\n");
        return 1;
    }

    time(&now);
    for( i = 0 ; i < 5 ; ++i )
    if( !SHM->UTMPbusystate )
        break;
    else{
        puts("utmpshm is busy....");
        sleep(1);
    }
    printf("starting scaning... %s \n", (fast ? "(fast mode)" : ""));
    SHM->UTMPbusystate = 1;
    for( i = 0 ; i < USHM_SIZE ; ++i )
    if( SHM->uinfo[i].pid ){
        clean = NULL;
        if( !isalpha(SHM->uinfo[i].userid[0]) )
        clean = "userid error";
        else if( kill(SHM->uinfo[i].pid, 0) < 0 ){
        clean = "process error";
        purge_utmp(&SHM->uinfo[i]);
        }
        else if( !fast ){
        if( searchuser(SHM->uinfo[i].userid) == 0 ){
            clean = "user not exist";
        } 
#ifdef DOTIMEOUT
        else if( now - SHM->uinfo[i].lastact > 
             (timeout == -1 ? IDLE_TIMEOUT : timeout) ){
            sprintf(buf, "timeout(%s",
                ctime(&SHM->uinfo[i].lastact));
            buf[strlen(buf) - 1] = 0;
            strcat(buf, ")");
            clean = buf;
            kill(SHM->uinfo[i].pid, SIGHUP);
            printf("%s\n", buf);
            continue;
        }
#endif
        }
        
        if( clean ){
        printf("clean %06d(%s), userid: %s\n",
               i, clean, SHM->uinfo[i].userid);
        memset(&SHM->uinfo[i], 0, sizeof(userinfo_t));
        }
    }
    SHM->UTMPbusystate = 0;
    return 0;
}

char *CTIMEx(char *buf, time_t t)
{
    strcpy(buf, ctime(&t));
    buf[strlen(buf) - 1] = 0;
    return buf;
}

int utmpstate(int argc, char **argv)
{
    time_t  now;
    char    upbuf[64], nowbuf[64];
    now = time(NULL);
    CTIMEx(upbuf,  SHM->UTMPuptime);
    CTIMEx(nowbuf, time(NULL));
    printf("now:        %s\n", nowbuf);
    printf("currsorted: %d\n", SHM->currsorted);
    printf("uptime:     %s\n", upbuf);
    printf("number:     %d\n", SHM->UTMPnumber);
    printf("busystate:  %d\n", SHM->UTMPbusystate);
    return 0;
}

int utmpreset(int argc, char **argv)
{
    SHM->UTMPbusystate=0;
    utmpstate(0, NULL);
    return 0;
}

/* ulistsort */
static int cmputmpuserid(const void *i, const void *j){
    return strcasecmp((*((userinfo_t**)i))->userid,
              (*((userinfo_t**)j))->userid);
}

static int cmputmpmode(const void *i, const void *j){
    return (*((userinfo_t**)i))->mode-
    (*((userinfo_t**)j))->mode;
} 

static int cmputmpidle(const void *i, const void *j){
    return (*((userinfo_t**)i))->lastact-
    (*((userinfo_t**)j))->lastact;
} 

static int cmputmpfrom(const void *i, const void *j){
  return strcasecmp((*((userinfo_t**)i))->from,
            (*((userinfo_t**)j))->from);
} 

static int cmputmpfive(const void *i, const void *j){
    int type;
    if((type=(*((userinfo_t**)j))->five_win - (*((userinfo_t**)i))->five_win))
    return type;
    if((type=(*((userinfo_t**)i))->five_lose-(*((userinfo_t**)j))->five_lose))
    return type;
    return (*((userinfo_t**)i))->five_tie-(*((userinfo_t**)j))->five_tie;
} 

#if 0
static int cmputmpsex(const void *i, const void *j){
    static int ladyfirst[]={1,0,1,0,1,0,3,3};
    return ladyfirst[(*((userinfo_t**)i))->sex]-
    ladyfirst[(*((userinfo_t**)j))->sex];
}
#endif

static int cmputmppid(const void *i, const void *j){
    return (*((userinfo_t**)i))->pid-(*((userinfo_t**)j))->pid;
}
static int cmputmpuid(const void *i, const void *j){
    return (*((userinfo_t**)i))->uid-(*((userinfo_t**)j))->uid;
}

int utmpsort(int argc, char **argv)
{
    time_t now=time(NULL);
    int count, i, ns;
    userinfo_t *uentp;
    
    if(now-SHM->UTMPuptime<60 && (now==SHM->UTMPuptime || SHM->UTMPbusystate)){
    puts("lazy sort");
    //return; /* lazy sort */
    }
    SHM->UTMPbusystate=1;
    SHM->UTMPuptime = now;
    ns=(SHM->currsorted?0:1);

    for(uentp = &SHM->uinfo[0], count=0, i=0;
    i< USHM_SIZE; i++,uentp = &SHM->uinfo[i])
    if(uentp->pid){
        SHM->sorted[ns][0][count++]= uentp;
        }
    SHM->number = count;
    qsort(SHM->sorted[ns][0],count,sizeof(userinfo_t*),cmputmpuserid);
    memcpy(SHM->sorted[ns][1],SHM->sorted[ns][0],
                         sizeof(userinfo_t *)*count);
    memcpy(SHM->sorted[ns][2],SHM->sorted[ns][0],
                         sizeof(userinfo_t *)*count);
    memcpy(SHM->sorted[ns][3],SHM->sorted[ns][0],
                         sizeof(userinfo_t *)*count);
    memcpy(SHM->sorted[ns][4],SHM->sorted[ns][0],
                         sizeof(userinfo_t *)*count);
    memcpy(SHM->sorted[ns][5],SHM->sorted[ns][0],
                         sizeof(userinfo_t *)*count);
    memcpy(SHM->sorted[ns][6],SHM->sorted[ns][0],
                         sizeof(userinfo_t *)*count);
    memcpy(SHM->sorted[ns][7],SHM->sorted[ns][0],
                         sizeof(userinfo_t *)*count);
    qsort(SHM->sorted[ns][1], count, sizeof(userinfo_t *), cmputmpmode );
    qsort(SHM->sorted[ns][2], count, sizeof(userinfo_t *), cmputmpidle );
    qsort(SHM->sorted[ns][3], count, sizeof(userinfo_t *), cmputmpfrom );
    qsort(SHM->sorted[ns][4], count, sizeof(userinfo_t *), cmputmpfive );
    //qsort(SHM->sorted[ns][5], count, sizeof(userinfo_t *), cmputmpsex );
    qsort(SHM->sorted[ns][6], count, sizeof(userinfo_t *), cmputmpuid );
    qsort(SHM->sorted[ns][7], count, sizeof(userinfo_t *), cmputmppid );
    SHM->currsorted=ns;
    SHM->UTMPbusystate=0;

    puts("new utmpstate");
    utmpstate(0, NULL);
    return 0;
}
/* end of ulistsort */

#define TIMES   10
int utmpwatch(int argc, char **argv)
{
    int     i;
    while( 1 ){
    for( i = 0 ; i < TIMES ; ++i ){
        usleep(300);
        if( !SHM->UTMPbusystate )
        break;
        puts("busying...");
    }
    if( i == TIMES ){
        puts("reset!");
        SHM->UTMPbusystate = 0;
    }
    }
    return 0;
}

int utmpnum(int argc, char **argv)
{
    printf("%d.0\n", SHM->UTMPnumber);
    return 0;
}

int showglobal(int argc, char **argv)
{
    int     i;
    for( i = 0 ; i < 10 ; ++i )
    printf("GLOBALVAR[%d] = %d\n", i, SHM->GLOBALVAR[i]);
    return 0;
}

int setglobal(int argc, char **argv)
{
    int     where;
    if( argc != 3 )
    return 1;
    where = atoi(argv[1]);
    if( !(0 <= where && where <= 9) ){
    puts("only GLOBALVAR[0] ~ GLOBALVAR[9]");
    return 1;
    }
    printf("GLOBALVAR[%d] = %d -> ", where, SHM->GLOBALVAR[where]);
    printf("%d\n", SHM->GLOBALVAR[where] = atoi(argv[2]));
    return 0;
}

int listpid(int argc, char **argv)
{
    int     i;
    for( i = 0 ; i < USHM_SIZE ; ++i )
    if( SHM->uinfo[i].pid > 0 )
        printf("%d\n", SHM->uinfo[i].pid);
    return 0;
}

struct {
    int     (*func)(int, char **);
    char    *cmd, *descript;
} cmd[] =
    { {utmpfix,    "utmpfix",    "clear dead userlist entry"},
      {utmpstate,  "utmpstate",  "list utmpstate"},
      {utmpreset,  "utmpreset",  "SHM->busystate=0"},
      {utmpsort,   "utmpsort",   "sort ulist"},
      {utmpwatch,  "utmpwatch",  "to see if busystate is always 1 then fix it"},
      {utmpnum,    "utmpnum",    "print SHM->number for snmpd"},
      {showglobal, "showglobal", "show GLOBALVAR[]"},
      {setglobal,  "setglobal",  "set GLOBALVAR[]"},
      {listpid,    "listpid",    "list all pids of mbbsd"},
      {NULL, NULL, NULL} };

int main(int argc, char **argv)
{
    int     i = 0;
    
    if( argc >= 2 ){
    /* shmctl shouldn't create shm itself */
        int     shmid = shmget(SHM_KEY, sizeof(SHM_t), 0);
    if( shmid < 0 ){
      printf("%d\n", errno);
        perror("attach utmpshm");
        return 1;
    }
    chdir(BBSHOME);
    resolve_utmp();
    resolve_boards();
    resolve_garbage();
    resolve_fcache();
    for( i = 0 ; cmd[i].func != NULL ; ++i )
        if( strcmp(cmd[i].cmd, argv[1]) == 0 ){
        return cmd[i].func(argc - 1, &argv[1]);
        }
    }
    if( argc == 1 || cmd[i].func == NULL ){
    /* usage */
    printf("usage: bbsctl [command] [options]\n");
    printf("commands:\n");
    for( i = 0 ; cmd[i].func != NULL ; ++i )
        printf("\t%-15s%s\n", cmd[i].cmd, cmd[i].descript);
    }
    return 0;
}