mirror of
https://github.com/sheumann/hush.git
synced 2024-12-22 14:30:31 +00:00
112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
/* Copyright (C) 2003 Manuel Novoa III
|
|
*
|
|
* Licensed under GPL v2, or later. See file LICENSE in this tarball.
|
|
*/
|
|
|
|
/* Nov 6, 2003 Initial version.
|
|
*
|
|
* NOTE: This implementation is quite strict about requiring all
|
|
* field seperators. It also does not allow leading whitespace
|
|
* except when processing the numeric fields. glibc is more
|
|
* lenient. See the various glibc difference comments below.
|
|
*
|
|
* TODO:
|
|
* Move to dynamic allocation of (currently staticly allocated)
|
|
* buffers; especially for the group-related functions since
|
|
* large group member lists will cause error returns.
|
|
*
|
|
*/
|
|
|
|
#include <features.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <stddef.h>
|
|
#include <errno.h>
|
|
#include <assert.h>
|
|
#include <ctype.h>
|
|
#include "busybox.h"
|
|
#include "pwd_.h"
|
|
#include "grp_.h"
|
|
#include "shadow_.h"
|
|
|
|
#ifndef _PATH_SHADOW
|
|
#define _PATH_SHADOW "/etc/shadow"
|
|
#endif
|
|
#ifndef _PATH_PASSWD
|
|
#define _PATH_PASSWD "/etc/passwd"
|
|
#endif
|
|
#ifndef _PATH_GROUP
|
|
#define _PATH_GROUP "/etc/group"
|
|
#endif
|
|
|
|
/**********************************************************************/
|
|
/* Sizes for staticly allocated buffers. */
|
|
|
|
/* If you change these values, also change _SC_GETPW_R_SIZE_MAX and
|
|
* _SC_GETGR_R_SIZE_MAX in libc/unistd/sysconf.c to match */
|
|
#define PWD_BUFFER_SIZE 256
|
|
#define GRP_BUFFER_SIZE 256
|
|
|
|
/**********************************************************************/
|
|
/* Prototypes for internal functions. */
|
|
|
|
extern int __parsepwent(void *pw, char *line);
|
|
extern int __parsegrent(void *gr, char *line);
|
|
extern int __parsespent(void *sp, char *line);
|
|
|
|
extern int __pgsreader(int (*__parserfunc)(void *d, char *line), void *data,
|
|
char *__restrict line_buff, size_t buflen, FILE *f);
|
|
|
|
|
|
#ifndef GETXXKEY_R_FUNC
|
|
#error GETXXKEY_R_FUNC is not defined!
|
|
#endif
|
|
/**********************************************************************/
|
|
#ifdef GETXXKEY_R_FUNC
|
|
|
|
int GETXXKEY_R_FUNC(DO_GETXXKEY_R_KEYTYPE key,
|
|
GETXXKEY_R_ENTTYPE *__restrict resultbuf,
|
|
char *__restrict buffer, size_t buflen,
|
|
GETXXKEY_R_ENTTYPE **__restrict result)
|
|
{
|
|
FILE *stream;
|
|
int rv;
|
|
|
|
*result = NULL;
|
|
|
|
if (!(stream = fopen(DO_GETXXKEY_R_PATHNAME, "r"))) {
|
|
rv = errno;
|
|
} else {
|
|
do {
|
|
if (!(rv = __pgsreader(GETXXKEY_R_PARSER, resultbuf,
|
|
buffer, buflen, stream))
|
|
) {
|
|
if (GETXXKEY_R_TEST(resultbuf)) { /* Found key? */
|
|
*result = resultbuf;
|
|
break;
|
|
}
|
|
} else {
|
|
if (rv == ENOENT) { /* end-of-file encountered. */
|
|
rv = 0;
|
|
}
|
|
break;
|
|
}
|
|
} while (1);
|
|
fclose(stream);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
#endif
|
|
/**********************************************************************/
|
|
#undef GETXXKEY_R_FUNC
|
|
#undef GETXXKEY_R_PARSER
|
|
#undef GETXXKEY_R_ENTTYPE
|
|
#undef GETXXKEY_R_TEST
|
|
#undef DO_GETXXKEY_R_KEYTYPE
|
|
#undef DO_GETXXKEY_R_PATHNAME
|
|
|