source: trunk/mindi-busybox/libpwdgrp/pwd_grp_internal.c @ 954

Last change on this file since 954 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: 2.8 KB
Line 
1/*  Copyright (C) 2003     Manuel Novoa III
2 *
3 *  Licensed under GPL v2, or later.  See file LICENSE in this tarball.
4 */
5
6/*  Nov 6, 2003  Initial version.
7 *
8 *  NOTE: This implementation is quite strict about requiring all
9 *    field seperators.  It also does not allow leading whitespace
10 *    except when processing the numeric fields.  glibc is more
11 *    lenient.  See the various glibc difference comments below.
12 *
13 *  TODO:
14 *    Move to dynamic allocation of (currently statically allocated)
15 *      buffers; especially for the group-related functions since
16 *      large group member lists will cause error returns.
17 *
18 */
19
20#include <features.h>
21#include <stdio.h>
22#include <stdlib.h>
23#include <stdint.h>
24#include <string.h>
25#include <stddef.h>
26#include <errno.h>
27#include <assert.h>
28#include <ctype.h>
29
30#include "pwd_.h"
31#include "grp_.h"
32#include "shadow_.h"
33#include "libbb.h"
34
35#ifndef _PATH_SHADOW
36#define _PATH_SHADOW    "/etc/shadow"
37#endif
38#ifndef _PATH_PASSWD
39#define _PATH_PASSWD    "/etc/passwd"
40#endif
41#ifndef _PATH_GROUP
42#define _PATH_GROUP "/etc/group"
43#endif
44
45/**********************************************************************/
46/* Sizes for statically allocated buffers. */
47
48/* If you change these values, also change _SC_GETPW_R_SIZE_MAX and
49 * _SC_GETGR_R_SIZE_MAX in libc/unistd/sysconf.c to match */
50#define PWD_BUFFER_SIZE 256
51#define GRP_BUFFER_SIZE 256
52
53/**********************************************************************/
54/* Prototypes for internal functions. */
55
56extern int __parsepwent(void *pw, char *line);
57extern int __parsegrent(void *gr, char *line);
58extern int __parsespent(void *sp, char *line);
59
60extern int __pgsreader(int (*__parserfunc)(void *d, char *line), void *data,
61                       char *__restrict line_buff, size_t buflen, FILE *f);
62
63
64#ifndef GETXXKEY_R_FUNC
65#error GETXXKEY_R_FUNC is not defined!
66#endif
67/**********************************************************************/
68#ifdef GETXXKEY_R_FUNC
69
70int GETXXKEY_R_FUNC(DO_GETXXKEY_R_KEYTYPE key,
71                    GETXXKEY_R_ENTTYPE *__restrict resultbuf,
72                    char *__restrict buffer, size_t buflen,
73                    GETXXKEY_R_ENTTYPE **__restrict result)
74{
75    FILE *stream;
76    int rv;
77
78    *result = NULL;
79
80    if (!(stream = fopen(DO_GETXXKEY_R_PATHNAME, "r"))) {
81        rv = errno;
82    } else {
83        do {
84            if (!(rv = __pgsreader(GETXXKEY_R_PARSER, resultbuf,
85                                   buffer, buflen, stream))
86                ) {
87                if (GETXXKEY_R_TEST(resultbuf)) { /* Found key? */
88                    *result = resultbuf;
89                    break;
90                }
91            } else {
92                if (rv == ENOENT) { /* end-of-file encountered. */
93                    rv = 0;
94                }
95                break;
96            }
97        } while (1);
98        fclose(stream);
99    }
100
101    return rv;
102}
103
104#endif
105/**********************************************************************/
106#undef GETXXKEY_R_FUNC
107#undef GETXXKEY_R_PARSER
108#undef GETXXKEY_R_ENTTYPE
109#undef GETXXKEY_R_TEST
110#undef DO_GETXXKEY_R_KEYTYPE
111#undef DO_GETXXKEY_R_PATHNAME
112
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