int
utmp_login(struct user_info *up)
{
struct user_info *uentp;
int j;
int h;
j = binfo->utmpshm->guesthash_head[0] - 1;
if (j < 0 || j >= MAXACTIVERUN) {
return -1;
}
uentp = &(binfo->utmpshm->uinfo[j]);
if (uentp->active && uentp->pid) {
return -1;
}
binfo->utmpshm->guesthash_head[0] =
binfo->utmpshm->guesthash_next[j + 1];
binfo->utmpshm->guesthash_next[j + 1] = 0;
binfo->utmpshm->uinfo[j] = *up;
binfo->utmpshm->activeuser++;
update_max_online();
add_uindex(up->uid, j + 1);
if (!strcasecmp(up->userid, "guest") && up->pid == 1) {
h = utmp_iphash(up->from);
binfo->utmpshm->guesthash_next[j + 1] =
binfo->utmpshm->guesthash_head[h];
binfo->utmpshm->guesthash_head[h] = j + 1;
binfo->utmpshm->wwwguestnum++;
}
utmp_kickidle();
return j + 1;
}
static char *
check_multi(char *id, int uid)
{
int i, uent;
int h;
if (uid <= 0 || uid > MAXUSERS)
return NULL;
if (strcasecmp(id, "guest")) {
//这种算法, wwwlogin必须限制登录窗口数目, 否则
//上线名单会被轻易冲爆
for (i = 0; i < 6; i++) {
uent = uindexshm->user[uid - 1][i] - 1;
if (uent < 0)
continue;
if (do_check(uent, uid))
return makeurlbase(uent, uid);
}
return NULL;
} else {
h = utmp_iphash(realfromhost);
uent = shm_utmp->guesthash_head[h];
while (uent != 0) {
if (do_check(uent - 1, uid))
return makeurlbase(uent - 1, uid);
uent = shm_utmp->guesthash_next[uent];
}
}
return NULL;
}
static void
utmp_kickidle()
{
int now;
pid_t pid;
int n, h, i;
struct user_info *uentp, *u;
now = time(NULL);
if (now < binfo->utmpshm->uptime + 60)
return;
binfo->utmpshm->uptime = now;
for (n = 0; n < MAXACTIVE; n++) {
uentp = &(binfo->utmpshm->uinfo[n]);
pid = uentp->pid;
if (pid == 0)
continue;
if (uentp->active == 0)
continue;
if (pid == 1) //www
//web session 长度，单位为秒
if ((now - uentp->lasttime < 60 * 60)
&& !uentp->wwwinfo.iskicked)
continue;
//telnet ssh 发呆长度，单位为秒
if (pid > 1 && now - uentp->lasttime < 3600)
continue;
if (pid > 1 && kill(pid, 0) == 0) { //如果进程存在
#ifdef DOTIMEOUT
if (now - uentp->lasttime >
((uentp->ext_idle) ? IDLE_TIMEOUT *
3 : IDLE_TIMEOUT)) {
kill(pid, SIGHUP);
}
continue;
}
#endif
if (!strcasecmp(uentp->userid, "guest")
&& uentp->pid == 1) {
u = &(binfo->utmpshm->uinfo[n]);
h = utmp_iphash(u->from);
i = binfo->utmpshm->guesthash_head[h];
if (i == n + 1) {
binfo->utmpshm->guesthash_head[h] =
binfo->utmpshm->guesthash_next[i];
} else {
while (binfo->utmpshm->guesthash_next[i] != 0) {
if (binfo->utmpshm->guesthash_next[i] ==
n + 1) {
binfo->utmpshm->
guesthash_next[i] =
binfo->utmpshm->
guesthash_next[n + 1];
break;
} else {
i = binfo->utmpshm->
guesthash_next[i];
}
}
}
binfo->utmpshm->wwwguestnum--;
}
binfo->utmpshm->guesthash_next[n + 1] =
binfo->utmpshm->guesthash_head[0];
binfo->utmpshm->guesthash_head[0] = n + 1;
binfo->utmpshm->activeuser--;
remove_uindex(uentp->uid, n + 1);
uentp->active = 0;
uentp->pid = 0;
uentp->invisible = 1;
uentp->sockactive = 0;
uentp->sockaddr = 0;
uentp->destuid = 0;
uentp->lasttime = 0;
}
}
