From a1042f4ba94cf0324dee4c50b442de0e3b6df6e5 Mon Sep 17 00:00:00 2001
From: in2 <in2@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>
Date: Sun, 24 Mar 2002 14:54:12 +0000
Subject: utmpsort

git-svn-id: http://opensvn.csie.org/pttbbs/pttbbs/trunk/pttbbs@60 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
---
 util/shmctl.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 88 insertions(+), 1 deletion(-)

diff --git a/util/shmctl.c b/util/shmctl.c
index 77b9c99b..9d6846e9 100644
--- a/util/shmctl.c
+++ b/util/shmctl.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 #include <ctype.h>
 #include <signal.h>
@@ -42,11 +43,97 @@ int fixutmp(int argc, char **argv)
     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;
+} 
+
+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];
+}
+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 ulistsort(int argc, char **argv)
+{
+        time_t now=time(NULL);
+    int count, i, ns;
+    userinfo_t *uentp;
+
+    if(now-utmpshm->uptime<60 && (now==utmpshm->uptime || utmpshm->busystate)){
+	puts("lazy sort");
+	//return; /* lazy sort */
+    }
+    utmpshm->busystate=1;
+    utmpshm->uptime = now;
+    ns=(utmpshm->currsorted?0:1);
+
+    for(uentp = &utmpshm->uinfo[0], count=0, i=0;
+	i< USHM_SIZE; i++,uentp = &utmpshm->uinfo[i])
+	if(uentp->pid){
+	    utmpshm->sorted[ns][0][count++]= uentp;
+        }
+    utmpshm->number = count;
+    qsort(utmpshm->sorted[ns][0],count,sizeof(userinfo_t*),cmputmpuserid);
+    memcpy(utmpshm->sorted[ns][1],utmpshm->sorted[ns][0],
+						 sizeof(userinfo_t *)*count);
+    memcpy(utmpshm->sorted[ns][2],utmpshm->sorted[ns][0],
+						 sizeof(userinfo_t *)*count);
+    memcpy(utmpshm->sorted[ns][3],utmpshm->sorted[ns][0],
+						 sizeof(userinfo_t *)*count);
+    memcpy(utmpshm->sorted[ns][4],utmpshm->sorted[ns][0],
+						 sizeof(userinfo_t *)*count);
+    memcpy(utmpshm->sorted[ns][5],utmpshm->sorted[ns][0],
+						 sizeof(userinfo_t *)*count);
+    memcpy(utmpshm->sorted[ns][6],utmpshm->sorted[ns][0],
+						 sizeof(userinfo_t *)*count);
+    memcpy(utmpshm->sorted[ns][7],utmpshm->sorted[ns][0],
+						 sizeof(userinfo_t *)*count);
+    qsort(utmpshm->sorted[ns][1], count, sizeof(userinfo_t *), cmputmpmode );
+    qsort(utmpshm->sorted[ns][2], count, sizeof(userinfo_t *), cmputmpidle );
+    qsort(utmpshm->sorted[ns][3], count, sizeof(userinfo_t *), cmputmpfrom );
+    qsort(utmpshm->sorted[ns][4], count, sizeof(userinfo_t *), cmputmpfive );
+    qsort(utmpshm->sorted[ns][5], count, sizeof(userinfo_t *), cmputmpsex );
+    qsort(utmpshm->sorted[ns][6], count, sizeof(userinfo_t *), cmputmpuid );
+    qsort(utmpshm->sorted[ns][7], count, sizeof(userinfo_t *), cmputmppid );
+    utmpshm->currsorted=ns;
+    utmpshm->busystate=0;
+    return 0;
+}
+
+/* end of ulistsort */
 struct {
     int     (*func)(int, char **);
     char    *cmd, *descript;
 } cmd[] =
-    { {fixutmp, "fixutmp", "clear dead userlist entry"},
+    { {fixutmp,   "fixutmp", "clear dead userlist entry"},
+      {ulistsort, "ulistsort", "sort ulist"},
       {NULL, NULL, NULL} };
 
 int main(int argc, char **argv)
-- 
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