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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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#include "vector.h" |
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#ifdef ALLBSD |
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#include <sys/types.h> |
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#endif |
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#if defined(NETBSD) || defined(OPENBSD) |
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#include <limits.h> |
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#endif |
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#ifdef OPENBSD |
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#include <sys/param.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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> |
int num_users = 0, pos = 0, new_pos; |
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> |
VECTOR_DECLARE_STATIC(name_list, char, 128, NULL, NULL); |
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static user_stat_t user_stats; |
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static int size_of_namelist=-1; |
| 60 |
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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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FILE *f; |
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#endif |
| 58 |
|
|
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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; |
| 74 |
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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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|
| 59 |
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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; |
| 87 |
< |
user_stats.name_list=realloc(user_stats.name_list, 1+(size_of_namelist*2)); |
| 88 |
< |
if(user_stats.name_list==NULL){ |
| 89 |
< |
user_stats.name_list=tmp; |
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< |
return NULL; |
| 91 |
< |
} |
| 92 |
< |
size_of_namelist=1+(size_of_namelist*2); |
| 93 |
< |
} |
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> |
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++; |
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|
} |
| 74 |
|
endutent(); |
| 75 |
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#endif |
| 79 |
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} |
| 80 |
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while((fread(&entry, sizeof(entry),1,f)) != 0){ |
| 81 |
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if (entry.ut_name[0] == '\0') continue; |
| 82 |
< |
if((strlen(user_stats.name_list)+MAX_LOGIN_NAME_SIZE+2) > size_of_namelist){ |
| 83 |
< |
tmp=user_stats.name_list; |
| 84 |
< |
user_stats.name_list=realloc(user_stats.name_list, 1+(size_of_namelist*2)); |
| 85 |
< |
if(user_stats.name_list==NULL){ |
| 112 |
< |
user_stats.name_list=tmp; |
| 113 |
< |
return NULL; |
| 114 |
< |
} |
| 115 |
< |
size_of_namelist=1+(size_of_namelist*2); |
| 116 |
< |
|
| 82 |
> |
|
| 83 |
> |
new_pos = pos + strlen(entry.ut_name) + 1; |
| 84 |
> |
if (VECTOR_RESIZE(name_list, new_pos) < 0) { |
| 85 |
> |
return NULL; |
| 86 |
|
} |
| 87 |
< |
strncat(user_stats.name_list, entry.ut_name, MAX_LOGIN_NAME_SIZE); |
| 88 |
< |
strcat(user_stats.name_list, " "); |
| 87 |
> |
|
| 88 |
> |
strcpy(name_list + pos, entry.ut_name); |
| 89 |
> |
name_list[new_pos - 1] = ' '; |
| 90 |
> |
pos = new_pos; |
| 91 |
|
num_users++; |
| 92 |
|
} |
| 93 |
|
fclose(f); |
| 94 |
+ |
#endif |
| 95 |
|
|
| 96 |
< |
#endif |
| 97 |
< |
/* We want to remove the last " " */ |
| 98 |
< |
if(num_users!=0){ |
| 127 |
< |
tmp=strrchr(user_stats.name_list, ' '); |
| 128 |
< |
if(tmp!=NULL){ |
| 129 |
< |
*tmp='\0'; |
| 130 |
< |
user_stats.num_entries=num_users; |
| 131 |
< |
} |
| 96 |
> |
/* Remove the extra space at the end, and append a \0. */ |
| 97 |
> |
if (num_users != 0) { |
| 98 |
> |
pos--; |
| 99 |
|
} |
| 100 |
+ |
if (VECTOR_RESIZE(name_list, pos + 1) < 0) { |
| 101 |
+ |
return NULL; |
| 102 |
+ |
} |
| 103 |
+ |
name_list[pos] = '\0'; |
| 104 |
|
|
| 105 |
+ |
user_stats.num_entries = num_users; |
| 106 |
+ |
user_stats.name_list = name_list; |
| 107 |
|
return &user_stats; |
| 135 |
– |
|
| 108 |
|
} |
