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/*
** Copyright 1998 - 2001 Double Precision, Inc. See COPYING for
** distribution information.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <pwd.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_SHADOW_H
#include <shadow.h>
#endif
#include "auth.h"
#include "authmod.h"
#include "authstaticlist.h"
static const char rcsid[]="$Id: authshadow.c,v 1.13 2004/01/11 02:47:32 mrsam Exp $";
extern int auth_shadow_pre(const char *userid, const char *service,
int (*callback)(struct authinfo *, void *),
void *arg);
extern void auth_pwd_enumerate( void(*cb_func)(const char *name,
uid_t uid,
gid_t gid,
const char *homedir,
const char *maildir,
void *void_arg),
void *void_arg);
struct callback_info {
const char *pass;
char *userret;
int issession;
void (*callback_func)(struct authinfo *, void *);
void *callback_arg;
};
static int callback_pwd(struct authinfo *a, void *p)
{
struct callback_info *i=(struct callback_info *)p;
if (a->passwd == 0 || authcheckpassword(i->pass, a->passwd))
return (-1);
if ((i->userret=strdup(a->sysusername)) == 0)
{
perror("malloc");
return (1);
}
if (i->callback_func == 0)
authsuccess(a->homedir, i->userret, 0, &a->sysgroupid,
a->address, a->fullname);
else
{
a->address=a->sysusername;
(*i->callback_func)(a, i->callback_arg);
}
return (0);
}
char *auth_shadow(const char *service, const char *authtype, char *authdata,
int issession,
void (*callback_func)(struct authinfo *, void *), void *callback_arg)
{
const char *user, *pass;
struct callback_info ci;
int rc;
if (strcmp(authtype, AUTHTYPE_LOGIN) ||
(user=strtok(authdata, "\n")) == 0 ||
(pass=strtok(0, "\n")) == 0)
{
errno=EPERM;
return (0);
}
ci.pass=pass;
ci.issession=issession;
ci.callback_func=callback_func;
ci.callback_arg=callback_arg;
rc=auth_shadow_pre(user, service, &callback_pwd, &ci);
if (rc < 0)
{
errno=EPERM;
return (0);
}
if (rc > 0)
{
errno=EACCES;
return (0);
}
if (putenv("MAILDIR="))
{
perror("putenv");
free(ci.userret);
return (0);
}
return (ci.userret);
}
static void auth_shadow_cleanup()
{
#if HAVE_ENDPWENT
endpwent();
#endif
#if HAVE_ENDSPENT
endspent();
#endif
}
struct authstaticinfo authshadow_info={
"authshadow",
auth_shadow,
auth_shadow_pre,
auth_shadow_cleanup,
auth_syspasswd,
NULL,
auth_pwd_enumerate,
};
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