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/*-
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project by ThinkSec AS and
* NAI Labs, the Security Research Division of Network Associates, Inc.
* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
* DARPA CHATS research program.
*
* 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. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR 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.
*
* $P4: //depot/projects/openpam/include/security/openpam.h#15 $
*/
#ifndef _SECURITY_OPENPAM_H_INCLUDED
#define _SECURITY_OPENPAM_H_INCLUDED
/*
* Annoying but necessary header pollution
*/
#include <stdarg.h>
#ifdef __cplusplus
extern "C" {
#endif
struct passwd;
/*
* API extensions
*/
int
openpam_borrow_cred(pam_handle_t *_pamh,
const struct passwd *_pwd);
void
openpam_free_data(pam_handle_t *_pamh,
void *_data,
int _status);
const char *
openpam_get_option(pam_handle_t *_pamh,
const char *_option);
int
openpam_restore_cred(pam_handle_t *_pamh);
int
openpam_set_option(pam_handle_t *_pamh,
const char *_option,
const char *_value);
int
pam_error(pam_handle_t *_pamh,
const char *_fmt,
...);
int
pam_get_authtok(pam_handle_t *_pamh,
int _item,
const char **_authtok,
const char *_prompt);
int
pam_info(pam_handle_t *_pamh,
const char *_fmt,
...);
int
pam_prompt(pam_handle_t *_pamh,
int _style,
char **_resp,
const char *_fmt,
...);
int
pam_setenv(pam_handle_t *_pamh,
const char *_name,
const char *_value,
int _overwrite);
int
pam_vinfo(pam_handle_t *_pamh,
const char *_fmt,
va_list _ap);
int
pam_verror(pam_handle_t *_pamh,
const char *_fmt,
va_list _ap);
int
pam_vprompt(pam_handle_t *_pamh,
int _style,
char **_resp,
const char *_fmt,
va_list _ap);
/*
* Log levels
*/
enum {
PAM_LOG_DEBUG,
PAM_LOG_VERBOSE,
PAM_LOG_NOTICE,
PAM_LOG_ERROR
};
/*
* Log to syslog
*/
void
_openpam_log(int _level,
const char *_func,
const char *_fmt,
...);
#if defined(__STDC__) && (__STDC_VERSION__ >= 199901L)
#define openpam_log(lvl, fmt, ...) \
_openpam_log((lvl), __func__, fmt, __VA_ARGS__)
#elif defined(__GNUC__) && (__GNUC__ >= 2) && (__GNUC_MINOR__ >= 95)
#define openpam_log(lvl, fmt, ...) \
_openpam_log((lvl), __func__, fmt, ##fmt)
#elif defined(__GNUC__) && defined(__FUNCTION__)
#define openpam_log(lvl, fmt...) \
_openpam_log((lvl), __FUNCTION__, ##fmt)
#else
void
openpam_log(int _level,
const char *_format,
...);
#endif
/*
* Generic conversation function
*/
struct pam_message;
struct pam_response;
int openpam_ttyconv(int _n,
const struct pam_message **_msg,
struct pam_response **_resp,
void *_data);
/*
* PAM primitives
*/
enum {
PAM_SM_AUTHENTICATE,
PAM_SM_SETCRED,
PAM_SM_ACCT_MGMT,
PAM_SM_OPEN_SESSION,
PAM_SM_CLOSE_SESSION,
PAM_SM_CHAUTHTOK,
/* keep this last */
PAM_NUM_PRIMITIVES
};
/*
* Dummy service module function
*/
#define PAM_SM_DUMMY(type) \
PAM_EXTERN int \
pam_sm_##type(pam_handle_t *pamh, int flags, \
int argc, const char *argv[]) \
{ \
return (PAM_IGNORE); \
}
/*
* PAM service module functions match this typedef
*/
struct pam_handle;
typedef int (*pam_func_t)(struct pam_handle *, int, int, const char **);
/*
* A struct that describes a module.
*/
typedef struct pam_module pam_module_t;
struct pam_module {
char *path;
pam_func_t func[PAM_NUM_PRIMITIVES];
void *dlh;
int refcount;
pam_module_t *prev;
pam_module_t *next;
};
/*
* Infrastructure for static modules using GCC linker sets.
* You are not expected to understand this.
*/
#if defined(__FreeBSD__)
#define PAM_SOEXT ".so"
#else
#ifndef NO_STATIC_MODULES
#define NO_STATIC_MODULES
#endif
#endif
#if defined(__GNUC__) && !defined(__PIC__) && !defined(NO_STATIC_MODULES)
/* gcc, static linking */
#include <sys/cdefs.h>
#include <linker_set.h>
#define OPENPAM_STATIC_MODULES
#define PAM_EXTERN static
#define PAM_MODULE_ENTRY(name) \
static char _pam_name[] = name PAM_SOEXT; \
static struct pam_module _pam_module = { _pam_name, { \
pam_sm_authenticate, pam_sm_setcred, pam_sm_acct_mgmt, \
pam_sm_open_session, pam_sm_close_session, pam_sm_chauthtok }, \
NULL, 0, NULL, NULL }; \
DATA_SET(_openpam_static_modules, _pam_module)
#else
/* normal case */
#define PAM_EXTERN
#define PAM_MODULE_ENTRY(name)
#endif
#ifdef __cplusplus
}
#endif
#endif
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