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/* |
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* i-scream central monitoring system |
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* http://www.i-scream.org.uk |
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* Copyright (C) 2000-2002 i-scream |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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|
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <utmp.h> |
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#include "statgrab.h" |
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|
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#define START_VAL 5 |
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|
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user_stat_t *get_user_stats(){ |
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int num_users=0; |
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|
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static user_stat_t user_stat; |
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static int watermark=-1; |
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struct utmp *entry; |
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|
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name *name_ptr; |
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|
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/* First case call */ |
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if (watermark==-1){ |
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user_stat.name_list=malloc(START_VAL * sizeof *user_stat.name_list); |
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if(user_stat.name_list==NULL){ |
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return NULL; |
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} |
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watermark=START_VAL; |
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} |
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|
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setutent(); |
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while((entry=getutent()) != NULL) { |
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if(entry->ut_type==USER_PROCESS) { |
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if(num_users>watermark-1){ |
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name_ptr=user_stat.name_list; |
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if((user_stat.name_list=realloc(user_stat.name_list, (watermark*2* sizeof *user_stat.name_list)))==NULL){ |
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user_stat.name_list=name_ptr; |
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return NULL; |
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} |
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watermark=watermark*2; |
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} |
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|
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strncpy(user_stat.name_list[num_users], entry->ut_user, MAX_LOGIN_NAME_SIZE); |
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/* NULL terminate just in case , the size of user_stat.name_list is MAX_LOGIN_NAME_SIZE+1 */ |
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|
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user_stat.name_list[num_users][MAX_LOGIN_NAME_SIZE]='\0'; |
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|
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num_users++; |
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} |
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} |
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endutent(); |
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user_stat.num_entries=num_users; |
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|
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return &user_stat; |
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|
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} |
