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/* |
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* i-scream central monitoring system |
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* http://www.i-scream.org |
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* Copyright (C) 2000-2004 i-scream |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library 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 GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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* 02111-1307 USA |
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* |
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* $Id: user_stats.c,v 1.16 2004/01/21 11:32:27 tdb Exp $ |
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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 "statgrab.h" |
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#ifdef ALLBSD |
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#include <sys/types.h> |
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#endif |
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#ifdef NETBSD |
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#include <limits.h> |
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#endif |
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#include <utmp.h> |
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#ifdef CYGWIN |
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#include <sys/unistd.h> |
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#endif |
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|
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#ifdef SOLARIS |
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#define MAX_LOGIN_NAME_SIZE 8 |
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#endif |
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#if defined(LINUX) || defined(FREEBSD) |
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#define MAX_LOGIN_NAME_SIZE UT_NAMESIZE |
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#endif |
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#ifdef NETBSD |
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#define MAX_LOGIN_NAME_SIZE _POSIX_LOGIN_NAME_MAX |
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#endif |
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#if defined(CYGWIN) |
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#define MAX_LOGIN_NAME_SIZE _SC_LOGIN_NAME_MAX |
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#endif |
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|
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#define START_VAL (5*(1+MAX_LOGIN_NAME_SIZE)) |
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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_stats; |
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static int size_of_namelist=-1; |
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char *tmp; |
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#if defined(SOLARIS) || defined(LINUX) || defined(CYGWIN) |
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struct utmp *entry; |
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#endif |
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#ifdef ALLBSD |
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struct utmp entry; |
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FILE *f; |
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#endif |
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|
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/* First case call */ |
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if (size_of_namelist==-1){ |
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user_stats.name_list=malloc(START_VAL); |
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if(user_stats.name_list==NULL){ |
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return NULL; |
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} |
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size_of_namelist=START_VAL; |
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} |
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|
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/* Essentially blank the list, or give it a inital starting string */ |
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strcpy(user_stats.name_list, ""); |
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|
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#if defined(SOLARIS) || defined(LINUX) || defined(CYGWIN) |
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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((strlen(user_stats.name_list)+MAX_LOGIN_NAME_SIZE+2) > size_of_namelist){ |
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tmp=user_stats.name_list; |
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user_stats.name_list=realloc(user_stats.name_list, 1+(size_of_namelist*2)); |
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if(user_stats.name_list==NULL){ |
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user_stats.name_list=tmp; |
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return NULL; |
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} |
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size_of_namelist=1+(size_of_namelist*2); |
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} |
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|
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strncat(user_stats.name_list, entry->ut_user, MAX_LOGIN_NAME_SIZE); |
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strcat(user_stats.name_list, " "); |
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num_users++; |
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} |
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} |
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endutent(); |
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#endif |
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#ifdef ALLBSD |
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if ((f=fopen(_PATH_UTMP, "r")) == NULL){ |
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return NULL; |
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} |
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while((fread(&entry, sizeof(entry),1,f)) != 0){ |
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if (entry.ut_name[0] == '\0') continue; |
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if((strlen(user_stats.name_list)+MAX_LOGIN_NAME_SIZE+2) > size_of_namelist){ |
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tmp=user_stats.name_list; |
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user_stats.name_list=realloc(user_stats.name_list, 1+(size_of_namelist*2)); |
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if(user_stats.name_list==NULL){ |
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user_stats.name_list=tmp; |
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return NULL; |
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} |
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size_of_namelist=1+(size_of_namelist*2); |
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|
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} |
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strncat(user_stats.name_list, entry.ut_name, MAX_LOGIN_NAME_SIZE); |
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strcat(user_stats.name_list, " "); |
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num_users++; |
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} |
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fclose(f); |
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|
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#endif |
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/* We want to remove the last " " */ |
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if(num_users!=0){ |
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tmp=strrchr(user_stats.name_list, ' '); |
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if(tmp!=NULL){ |
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*tmp='\0'; |
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user_stats.num_entries=num_users; |
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} |
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} |
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|
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return &user_stats; |
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|
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} |
