source: branches/2.2.2/mindi-busybox/libbb/bb_pwd.c @ 1247

Last change on this file since 1247 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 4.7 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * password utility routines.
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * Licensed under the GPL v2, see the file LICENSE in this tarball.
8 */
9
10
11#ifdef L_bb_getgrgid
12  /* Hacked by Tito Ragusa (c) 2004 <farmatito@tiscali.it> to make it more
13  * flexible :
14  *
15  * if bufsize is > 0 char *group cannot be set to NULL.
16  *                   On success groupname is written on static allocated buffer
17  *                   group (and a pointer to it is returned).
18  *                   On failure gid as string is written to static allocated
19  *                   buffer group and NULL is returned.
20  * if bufsize is = 0 char *group can be set to NULL.
21  *                   On success groupname is returned.
22  *                   On failure NULL is returned.
23  * if bufsize is < 0 char *group can be set to NULL.
24  *                   On success groupname is returned.
25  *                   On failure an error message is printed and
26  *                   the program exits.
27  */
28
29#include "libbb.h"
30#include "grp_.h"
31
32/* gets a groupname given a gid */
33char * bb_getgrgid(char *group, long gid, int bufsize)
34{
35    struct group *mygroup = getgrgid(gid);
36
37    return  bb_getug(group, (mygroup) ?
38            mygroup->gr_name : (char *)mygroup, gid, bufsize, 'g');
39}
40#endif /* L_bb_getgrgid */
41
42#ifdef L_bb_xgetgrnam
43#include <stdio.h>
44#include <string.h>
45#include "libbb.h"
46#include "pwd_.h"
47#include "grp_.h"
48
49
50/* returns a gid given a group name */
51long bb_xgetgrnam(const char *name)
52{
53    struct group *mygroup;
54
55    mygroup  = getgrnam(name);
56    if (mygroup==NULL)
57        bb_error_msg_and_die("unknown group name: %s", name);
58
59    return (mygroup->gr_gid);
60}
61#endif /* L_bb_xgetgrnam */
62
63#ifdef L_bb_xgetpwnam
64#include <stdio.h>
65#include <string.h>
66#include "libbb.h"
67#include "pwd_.h"
68#include "grp_.h"
69
70
71/* returns a uid given a username */
72long bb_xgetpwnam(const char *name)
73{
74    struct passwd *myuser;
75
76    myuser  = getpwnam(name);
77    if (myuser==NULL)
78        bb_error_msg_and_die("unknown user name: %s", name);
79
80    return myuser->pw_uid;
81}
82#endif /* L_bb_xgetpwnam */
83
84#ifdef L_bb_getpwuid
85 /* Hacked by Tito Ragusa (c) 2004 <farmatito@tiscali.it> to make it more
86  * flexible :
87  *
88  * if bufsize is > 0 char *name can not be set to NULL.
89  *                   On success username is written on the static allocated
90  *                   buffer name (and a pointer to it is returned).
91  *                   On failure uid as string is written to the static
92  *                   allocated buffer name and NULL is returned.
93  * if bufsize is = 0 char *name can be set to NULL.
94  *                   On success username is returned.
95  *                   On failure NULL is returned.
96  * if bufsize is < 0 char *name can be set to NULL
97  *                   On success username is returned.
98  *                   On failure an error message is printed and
99  *                   the program exits.
100  */
101
102#include "libbb.h"
103#include "pwd_.h"
104
105/* gets a username given a uid */
106char * bb_getpwuid(char *name, long uid, int bufsize)
107{
108    struct passwd *myuser = getpwuid(uid);
109
110    return  bb_getug(name, (myuser) ?
111            myuser->pw_name : (char *)myuser , uid, bufsize, 'u');
112}
113#endif /* L_bb_getpwuid */
114
115#ifdef L_bb_getug
116 /*
117  * if bufsize is > 0 char *buffer can not be set to NULL.
118  *                   If idname is not NULL it is written on the static
119  *                   allocated buffer (and a pointer to it is returned).
120  *                   if idname is NULL, id as string is written to the static
121  *                   allocated buffer and NULL is returned.
122  * if bufsize is = 0 char *buffer can be set to NULL.
123  *                   If idname exists a pointer to it is returned,
124  *                   else NULL is returned.
125  * if bufsize is < 0 char *buffer can be set to NULL.
126  *                   If idname exists a pointer to it is returned,
127  *                   else an error message is printed and the program exits.
128  */
129
130#include <stdio.h>
131#include <assert.h>
132#include "libbb.h"
133
134
135/* internal function for bb_getpwuid and bb_getgrgid */
136char * bb_getug(char *buffer, char *idname, long id, int bufsize, char prefix)
137{
138    if(bufsize > 0 ) {
139        assert(buffer!=NULL);
140        if(idname) {
141            return safe_strncpy(buffer, idname, bufsize);
142        }
143        snprintf(buffer, bufsize, "%ld", id);
144    } else if(bufsize < 0 && !idname) {
145        bb_error_msg_and_die("unknown %cid %ld", prefix, id);
146    }
147    return idname;
148}
149#endif /* L_bb_getug */
150
151
152#ifdef L_get_ug_id
153/* indirect dispatcher for pwd helpers.  */
154#include <stdlib.h>
155#include "libbb.h"
156
157unsigned long get_ug_id(const char *s,
158        long (*__bb_getxxnam)(const char *))
159{
160    unsigned long r;
161    char *p;
162
163    r = strtoul(s, &p, 10);
164    if (*p || (s == p)) {
165        r = __bb_getxxnam(s);
166    }
167
168    return r;
169}
170#endif /* L_get_ug_id */
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