shadow/lib/sgetspent.c

199 lines
5.1 KiB
C

/*
* Copyright 1989 - 1994, Julianne Frances Haugh
* 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.
*/
#include <config.h>
#ifdef SHADOWPWD /*{*/
#include "rcsid.h"
RCSID("$Id: sgetspent.c,v 1.5 1998/04/02 21:51:47 marekm Exp $")
#include <sys/types.h>
#include "prototypes.h"
#include "defines.h"
#include <stdio.h>
#define FIELDS 9
#define OFIELDS 5
/*
* sgetspent - convert string in shadow file format to (struct spwd *)
*/
struct spwd *
sgetspent(const char *string)
{
static char spwbuf[1024];
static struct spwd spwd;
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; /* fail if too long */
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;
/*
* Start populating the structure. The fields are all in
* static storage, as is the structure we pass back.
*/
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.
*/
if ((spwd.sp_lstchg = strtol (fields[2], &cpp, 10)) == 0 && *cpp) {
return 0;
} 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;
} 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;
} 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 0 /* SVR4 */
if (i == OFIELDS)
return 0;
#else
if (i == OFIELDS) {
spwd.sp_warn = spwd.sp_inact = spwd.sp_expire =
spwd.sp_flag = -1;
return &spwd;
}
#endif
/*
* 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;
} 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;
} 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;
} 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;
} else if (fields[8][0] == '\0')
spwd.sp_flag = -1;
return (&spwd);
}
#endif /*}*/