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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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* http://www.i-scream.org |
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* Copyright (C) 2000-2003 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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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#include "statgrab.h" |
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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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#ifdef FREEBSD |
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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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#include <utmp.h> |
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|
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#define START_VAL 5 |
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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_stat; |
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static int watermark=-1; |
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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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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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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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watermark=START_VAL; |
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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(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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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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watermark=watermark*2; |
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size_of_namelist=1+(size_of_namelist*2); |
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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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user_stat.name_list[num_users][MAX_LOGIN_NAME_SIZE]='\0'; |
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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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user_stat.num_entries=num_users; |
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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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return &user_stat; |
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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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} |
