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This commit is contained in:
Todd C. Miller
1995-11-21 02:28:36 +00:00
parent 3336366524
commit cf8fd59374
1 changed files with 231 additions and 0 deletions
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getspwuid.c Normal file
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/*
* CU sudo version 1.3.6
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 1, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Please send bugs, changes, problems to sudo-bugs@cs.colorado.edu
*
*******************************************************************
*
* This module contains get_pwuid(), a function that
* Makes a dyname copy of the struct passwd returned by
* getpwuid() and substitutes the shadow password if
* necesary.
*
* Todd C. Miller Mon Nov 20 13:53:06 MST 1995
*/
#ifndef lint
static char rcsid[] = "$Id$";
#endif /* lint */
#include "config.h"
#include <stdio.h>
#ifdef STDC_HEADERS
#include <stdlib.h>
#endif /* STDC_HEADERS */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#include <sys/types.h>
#include <netinet/in.h>
#include <pwd.h>
#include "sudo.h"
#include <options.h>
#ifdef SHADOW_TYPE
# if (SHADOW_TYPE == SPW_SVR4)
# include <shadow.h>
# endif /* SVR4 */
# if (SHADOW_TYPE == SPW_SECUREWARE)
# include <sys/security.h>
# include <prot.h>
# endif /* SECUREWARE */
# if (SHADOW_TYPE == SPW_ULTRIX4)
# include <auth.h>
# endif /* ULTRIX4 */
# if (SHADOW_TYPE == SPW_SUNOS4)
# include <sys/label.h>
# include <sys/audit.h>
# include <pwdadj.h>
# endif /* SUNOS4 */
#endif /* SHADOW_TYPE */
#ifndef STDC_HEADERS
#ifndef __GNUC__ /* gcc has its own malloc */
extern char *malloc __P((size_t));
#endif /* __GNUC__ */
extern char *getenv __P((const char *));
#ifdef HAVE_STRDUP
extern char *strdup __P((const char *));
#endif /* HAVE_STRDUP */
#endif /* !STDC_HEADERS */
/*
* local functions not visible outside sudo_getpwuid.c
*/
static char *sudo_getshell __P((struct passwd *));
static char *sudo_getspwd __P((struct passwd *));
/**********************************************************************
*
* sudo_getshell()
*
* This function returns the user's shell based on either the
* SHELL evariable or the passwd(5) entry (in that order).
*/
static char *sudo_getshell(pw_ent)
struct passwd *pw_ent;
{
char *pw_shell;
if ((pw_shell = getenv("SHELL")) == NULL)
pw_shell = pw_ent -> pw_shell;
return(pw_shell);
}
/**********************************************************************
*
* sudo_getpwuid()
*
* This function ...
*/
static char *sudo_getspwd(pw_ent)
struct passwd *pw_ent;
#ifdef SHADOW_TYPE
# if (SHADOW_TYPE == SPW_SVR4)
{
struct spwd *spw_ent;
if ((spw_ent = getspnam(pw_ent -> pw_name)) && spw_ent -> sp_pwdp)
return(spw_ent -> sp_pwdp);
else
return(pw_ent -> pw_passwd);
}
# endif /* SVR4 */
# if (SHADOW_TYPE == SPW_HPUX9)
{
struct s_passwd *spw_ent;
if ((spw_ent = getspwuid(pw_ent -> pw_uid)) && spw_ent -> pw_passwd)
return(spw_ent -> pw_passwd);
else
return(pw_ent -> pw_passwd);
}
# endif /* HPUX9 */
# if (SHADOW_TYPE == SPW_SUNOS4)
{
struct passwd_adjunct *spw_ent;
if ((spw_ent = getpwanam(pw_name)) && spw_ent -> pwa_passwd)
return(spw_ent -> pwa_passwd);
else
return(pw_ent -> pw_passwd);
}
# endif /* SUNOS4 */
# if (SHADOW_TYPE == SPW_ULTRIX4)
{
AUTHORIZATION *spw_ent;
if ((spw_ent = getauthuid(pw_uid)) && spw_ent -> a_password)
return(spw_ent -> a_password);
else
return(pw_ent -> pw_passwd);
}
# endif /* ULTRIX4 */
# if (SHADOW_TYPE == SPW_SECUREWARE)
{
struct pr_passwd *spw_ent;
if ((spw_ent = getprpwuid(pw_uid)) && spw_ent -> ufld.fd_encrypt)
return(spw_ent -> ufld.fd_encrypt);
else
return(pw_ent -> pw_passwd);
}
# endif /* SECUREWARE */
#else
{
return(pw_ent->pw_passwd);
}
#endif /* SHADOW_TYPE */
/**********************************************************************
*
* sudo_getpwuid()
*
* This function ...
*/
struct passwd *sudo_getpwuid(uid)
uid_t uid;
{
struct passwd *pw_ent, *local_pw_ent;
if ((pw_ent = getpwuid(uid)) == NULL)
return(NULL);
/* allocate space for a local copy of pw_ent */
local_pw_ent = (struct passwd *) malloc(sizeof(struct passwd));
if (local_pw_ent == NULL) {
perror("malloc");
(void) fprintf(stderr, "%s: cannot allocate memory!\n", Argv[0]);
exit(1);
}
/*
* Copy the struct passwd and the interesting strings...
*/
(void) memcpy(local_pw_ent, pw_ent, sizeof(struct passwd));
local_pw_ent->pw_name = strdup(pw_ent->pw_name);
if (local_pw_ent->pw_name == NULL) {
perror("malloc");
(void) fprintf(stderr, "%s: cannot allocate memory!\n", Argv[0]);
exit(1);
}
local_pw_ent->pw_dir = strdup(pw_ent->pw_dir);
if (local_pw_ent->pw_dir == NULL) {
perror("malloc");
(void) fprintf(stderr, "%s: cannot allocate memory!\n", Argv[0]);
exit(1);
}
/* pw_shell is a special case since we overide with $SHELL */
local_pw_ent->pw_shell = strdup(sudo_getshell(pw_ent));
if (local_pw_ent->pw_shell == NULL) {
perror("malloc");
(void) fprintf(stderr, "%s: cannot allocate memory!\n", Argv[0]);
exit(1);
}
/* pw_passwd gets a shadow password if applicable */
local_pw_ent->pw_passwd = strdup(sudo_getspwd(pw_ent));
if (local_pw_ent->pw_passwd == NULL) {
perror("malloc");
(void) fprintf(stderr, "%s: cannot allocate memory!\n", Argv[0]);
exit(1);
}
return(local_pw_ent);
}