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root/i-scream/projects/libstatgrab/src/libstatgrab/user_stats.c
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Comparing projects/libstatgrab/src/libstatgrab/user_stats.c (file contents):
Revision 1.6 by pajs, Sun Mar 2 16:43:48 2003 UTC vs.
Revision 1.26 by ats, Sun Jul 18 21:30:12 2004 UTC

# Line 1 | Line 1
1 < /*
2 < * i-scream central monitoring system
3 < * http://www.i-scream.org.uk
4 < * Copyright (C) 2000-2002 i-scream
1 > /*
2 > * i-scream libstatgrab
3 > * http://www.i-scream.org
4 > * Copyright (C) 2000-2004 i-scream
5   *
6 < * This program is free software; you can redistribute it and/or
7 < * modify it under the terms of the GNU General Public License
8 < * as published by the Free Software Foundation; either version 2
9 < * of the License, or (at your option) any later version.
6 > * This library is free software; you can redistribute it and/or
7 > * modify it under the terms of the GNU Lesser General Public
8 > * License as published by the Free Software Foundation; either
9 > * version 2.1 of the License, or (at your option) any later version.
10   *
11 < * This program is distributed in the hope that it will be useful,
11 > * This library is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 < * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 < * GNU General Public License for more details.
13 > * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 > * Lesser General Public License for more details.
15   *
16 < * You should have received a copy of the GNU General Public License
17 < * along with this program; if not, write to the Free Software
18 < * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
16 > * You should have received a copy of the GNU Lesser General Public
17 > * License along with this library; if not, write to the Free Software
18 > * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 > * 02111-1307 USA
20 > *
21 > * $Id$
22   */
23  
24   #ifdef HAVE_CONFIG_H
# Line 25 | Line 28
28   #include <stdlib.h>
29   #include <stdio.h>
30   #include <string.h>
28 #include <utmp.h>
31   #include "statgrab.h"
32 + #include "vector.h"
33 + #ifdef ALLBSD
34 + #include <sys/types.h>
35 + #endif
36 + #if defined(NETBSD) || defined(OPENBSD)
37 + #include <limits.h>
38 + #endif
39 + #ifdef OPENBSD
40 + #include <sys/param.h>
41 + #endif
42 + #include <utmp.h>
43 + #ifdef CYGWIN
44 + #include <sys/unistd.h>
45 + #endif
46  
47 < #define START_VAL (5*(1+MAX_LOGIN_NAME_SIZE))
48 <
49 < user_stat_t *get_user_stats(){
50 <        int num_users=0;
51 <
36 <        static user_stat_t user_stats;
37 <        static int size_of_namelist=-1;
38 <        char *tmp;
47 > sg_user_stats *sg_get_user_stats(){
48 >        int num_users = 0, pos = 0, new_pos;
49 >        VECTOR_DECLARE_STATIC(name_list, char, 128, NULL, NULL);
50 >        static sg_user_stats user_stats;
51 > #if defined(SOLARIS) || defined(LINUX) || defined(CYGWIN)
52          struct utmp *entry;
53 + #endif
54 + #ifdef ALLBSD
55 +        struct utmp entry;
56 +        FILE *f;
57 + #endif
58  
59 <        /* First case call */
42 <        if (size_of_namelist==-1){
43 <                user_stats.name_list=malloc(START_VAL);
44 <                if(user_stats.name_list==NULL){
45 <                        return NULL;
46 <                }
47 <                size_of_namelist=START_VAL;
48 <        }      
49 <
50 <        /* Essentially blank the list, or give it a inital starting string */
51 <        strcpy(user_stats.name_list, "");
59 > #if defined(SOLARIS) || defined(LINUX) || defined(CYGWIN)
60          setutent();
61          while((entry=getutent()) != NULL) {
62 <                if(entry->ut_type==USER_PROCESS) {
55 <                        if((strlen(user_stats.name_list)+MAX_LOGIN_NAME_SIZE+2) > size_of_namelist){
56 <                                tmp=user_stats.name_list;
57 <                                user_stats.name_list=realloc(user_stats.name_list, 1+(size_of_namelist*2));
58 <                                if(user_stats.name_list==NULL){
59 <                                        user_stats.name_list=tmp;
60 <                                        return NULL;
61 <                                }
62 <                                size_of_namelist=1+(size_of_namelist*2);
63 <                        }
62 >                if (entry->ut_type != USER_PROCESS) continue;
63  
64 <                        strncat(user_stats.name_list, entry->ut_user, MAX_LOGIN_NAME_SIZE);
65 <                        strcat(user_stats.name_list, " ");
66 <                        num_users++;
64 >                new_pos = pos + strlen(entry->ut_user) + 1;
65 >                if (VECTOR_RESIZE(name_list, new_pos) < 0) {
66 >                        return NULL;
67                  }
68 +
69 +                strcpy(name_list + pos, entry->ut_user);
70 +                name_list[new_pos - 1] = ' ';
71 +                pos = new_pos;
72 +                num_users++;
73          }
74          endutent();
75 + #endif
76 + #ifdef ALLBSD
77 +        if ((f=fopen(_PATH_UTMP, "r")) == NULL){
78 +                sg_set_error_with_errno(SG_ERROR_OPEN, _PATH_UTMP);
79 +                return NULL;
80 +        }
81 +        while((fread(&entry, sizeof(entry),1,f)) != 0){
82 +                if (entry.ut_name[0] == '\0') continue;
83  
84 <        /* We want to remove the last " " */
85 <        tmp=strrchr(user_stats.name_list, ' ');
86 <        *tmp='\0';
87 <        user_stats.num_entries=num_users;
84 >                new_pos = pos + strlen(entry.ut_name) + 1;
85 >                if (VECTOR_RESIZE(name_list, new_pos) < 0) {
86 >                        return NULL;
87 >                }
88  
89 <        return &user_stats;
89 >                strcpy(name_list + pos, entry.ut_name);
90 >                name_list[new_pos - 1] = ' ';
91 >                pos = new_pos;
92 >                num_users++;
93 >        }
94 >        fclose(f);
95 > #endif
96  
97 +        /* Remove the extra space at the end, and append a \0. */
98 +        if (num_users != 0) {
99 +                pos--;
100 +        }
101 +        if (VECTOR_RESIZE(name_list, pos + 1) < 0) {
102 +                return NULL;
103 +        }
104 +        name_list[pos] = '\0';
105 +
106 +        user_stats.num_entries = num_users;
107 +        user_stats.name_list = name_list;
108 +        return &user_stats;
109   }

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