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Bigger patch for (partial) tinylogin integration

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- Made a new dir loginutils
- Moved all applets from pwd_grp to loginutils
- Added new applets su.c login.c to loginutils
- Made a new dir libpwdgrp
- Moved everything from pwd_grp/libpwd_grp there
- Added shadow.c to libpwdgrp
- Removed dir pwd_grp
- Added usage strings for login and su to usage.h
- Changed main Makefile to reflect the dir rearrangements
[Parts of this patch may overlap with my other two patches]
This commit is contained in:
Robert Griebl
2002-06-04 20:45:46 +00:00
parent ea1a63a201
commit 1fca558799
30 changed files with 4123 additions and 2 deletions
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302
libpwdgrp/shadow.c Normal file
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/* vi: set sw=4 ts=4: */
/*
* Copyright 1989 - 1994, Julianne Frances Haugh
* <jockgrrl@austin.rr.com>, <jfh@austin.ibm.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* TODO: fgetspent_r.c getspent_r.c getspnam_r.c sgetspent_r.c
* lckpwdf ulckpwdf
*/
#include "busybox.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "shadow.h"
static FILE *shadow;
static char spwbuf[BUFSIZ];
static struct spwd spwd;
#define FIELDS 9
#define OFIELDS 5
/* setspent - initialize access to shadow text and DBM files */
void setspent(void)
{
if (shadow) {
rewind(shadow);
} else {
if ((shadow = fopen("/etc/shadow", "r")) == NULL)
perror_msg_and_die("/etc/shadow");
}
}
/* endspent - terminate access to shadow text and DBM files */
void endspent(void)
{
if (shadow)
(void) fclose(shadow);
shadow = (FILE *) 0;
}
/* getspent - get a (struct spwd *) from the current shadow file */
struct spwd *getspent(void)
{
if (!shadow)
setspent();
return (fgetspent(shadow));
}
/* getspnam - get a shadow entry by name */
struct spwd *getspnam(const char *name)
{
struct spwd *sp;
if (!name || !strlen(name))
return NULL;
setspent();
while ((sp = getspent()) != NULL) {
if (strcmp(name, sp->sp_namp) == 0)
break;
}
endspent();
return (sp);
}
/* sgetspent - convert string in shadow file format to (struct spwd *) */
/* returns NULL on error */
struct spwd *sgetspent(const char *string)
{
char *fields[FIELDS];
char *cp;
char *cpp;
int i;
/*
* Copy string to local buffer. It has to be tokenized and we
* have to do that to our private copy.
*/
if (strlen(string) >= sizeof spwbuf)
/* return 0; */
return NULL;
strcpy(spwbuf, string);
if ((cp = strrchr(spwbuf, '\n')))
*cp = '\0';
/*
* Tokenize the string into colon separated fields. Allow up to
* FIELDS different fields.
*/
for (cp = spwbuf, i = 0; *cp && i < FIELDS; i++) {
fields[i] = cp;
while (*cp && *cp != ':')
cp++;
if (*cp)
*cp++ = '\0';
}
/*
* It is acceptable for the last SVR4 field to be blank. This
* results in the loop being terminated early. In which case,
* we just make the last field be blank and be done with it.
*/
if (i == (FIELDS - 1))
fields[i++] = cp;
if ((cp && *cp) || (i != FIELDS && i != OFIELDS))
/* return 0; */
return NULL;
/*
* Start populating the structure. The fields are all in
* static storage, as is the structure we pass back. If we
* ever see a name with '+' as the first character, we try
* to turn on NIS processing.
*/
spwd.sp_namp = fields[0];
spwd.sp_pwdp = fields[1];
/*
* Get the last changed date. For all of the integer fields,
* we check for proper format. It is an error to have an
* incorrectly formatted number, unless we are using NIS.
*/
if ((spwd.sp_lstchg = strtol(fields[2], &cpp, 10)) == 0 && *cpp) {
/* return 0; */
return NULL;
} else if (fields[2][0] == '\0')
spwd.sp_lstchg = -1;
/*
* Get the minimum period between password changes.
*/
if ((spwd.sp_min = strtol(fields[3], &cpp, 10)) == 0 && *cpp) {
/* return 0; */
return NULL;
} else if (fields[3][0] == '\0')
spwd.sp_min = -1;
/*
* Get the maximum number of days a password is valid.
*/
if ((spwd.sp_max = strtol(fields[4], &cpp, 10)) == 0 && *cpp) {
/* return 0; */
return NULL;
} else if (fields[4][0] == '\0')
spwd.sp_max = -1;
/*
* If there are only OFIELDS fields (this is a SVR3.2 /etc/shadow
* formatted file), initialize the other field members to -1.
*/
if (i == OFIELDS) {
spwd.sp_warn = spwd.sp_inact = spwd.sp_expire = spwd.sp_flag = -1;
return &spwd;
}
/*
* The rest of the fields are mandatory for SVR4, but optional
* for anything else. However, if one is present the others
* must be as well.
*/
/*
* Get the number of days of password expiry warning.
*/
if ((spwd.sp_warn = strtol(fields[5], &cpp, 10)) == 0 && *cpp) {
/* return 0; */
return NULL;
} else if (fields[5][0] == '\0')
spwd.sp_warn = -1;
/*
* Get the number of days of inactivity before an account is
* disabled.
*/
if ((spwd.sp_inact = strtol(fields[6], &cpp, 10)) == 0 && *cpp) {
/* return 0; */
return NULL;
} else if (fields[6][0] == '\0')
spwd.sp_inact = -1;
/*
* Get the number of days after the epoch before the account is
* set to expire.
*/
if ((spwd.sp_expire = strtol(fields[7], &cpp, 10)) == 0 && *cpp) {
/* return 0; */
return NULL;
} else if (fields[7][0] == '\0')
spwd.sp_expire = -1;
/*
* This field is reserved for future use. But it isn't supposed
* to have anything other than a valid integer in it.
*/
if ((spwd.sp_flag = strtol(fields[8], &cpp, 10)) == 0 && *cpp) {
/* return 0; */
return NULL;
} else if (fields[8][0] == '\0')
spwd.sp_flag = -1;
return (&spwd);
}
/* fgetspent - get an entry from an /etc/shadow formatted stream */
struct spwd *fgetspent(FILE *fp)
{
char buf[BUFSIZ];
char *cp;
if (!fp)
/* return (0); */
return NULL;
if (fgets(buf, sizeof buf, fp) != (char *) 0) {
if ((cp = strchr(buf, '\n')))
*cp = '\0';
return (sgetspent(buf));
}
/* return 0; */
return NULL;
}
/*
* putspent - put a (struct spwd *) into the (FILE *) you provide.
*
* this was described in shadow_.h but not implemented, so here
* I go. -beppu
*
*/
int putspent(const struct spwd *sp, FILE *fp)
{
int ret;
/* seek to end */
ret = fseek(fp, 0, SEEK_END);
if (ret == -1) {
/* return -1; */
return 1;
}
/* powered by fprintf */
fprintf(fp, "%s:%s:%ld:%ld:%ld:%ld:%ld:%ld:%s\n", sp->sp_namp, /* login name */
sp->sp_pwdp, /* encrypted password */
sp->sp_lstchg, /* date of last change */
sp->sp_min, /* minimum number of days between changes */
sp->sp_max, /* maximum number of days between changes */
sp->sp_warn, /* number of days of warning before password expires */
sp->sp_inact, /* number of days after password expires until
the account becomes unusable */
sp->sp_expire, /* days since 1/1/70 until account expires */
"");
return 0;
}