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/*
Copyright 1994, 1998 The Open Group
Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group shall
not be used in advertising or otherwise to promote the sale, use or
other dealings in this Software without prior written authorization
from The Open Group.
*/
/*
* greet.h - interface to xdm's dynamically-loadable modular greeter
*/
#include <pwd.h>
#include <X11/Xlib.h>
/*
* Do this rather than break a build over a const-mismatch
*/
#if defined(__linux__) || defined(CSRG_BASED) || (defined(sun) && defined(SVR4))
# define CRYPT_ARGS const char *s1, const char *s2
# define GETSPNAM_ARGS const char *name
# define GETPWNAM_ARGS const char *name
#else
# define CRYPT_ARGS /*unknown*/
# define GETSPNAM_ARGS /*unknown*/
# define GETPWNAM_ARGS /*unknown*/
#endif
#if defined(__FreeBSD__) || defined(__bsdi__) || defined(__osf__)
# define SETGRENT_TYPE int
#else
# define SETGRENT_TYPE void
#endif
struct dlfuncs {
void (*_Debug)(const char * fmt, ...);
void (*_RegisterCloseOnFork)(int fd);
void (*_SecureDisplay)(struct display *d, Display *dpy);
void (*_UnsecureDisplay)(struct display *d, Display *dpy);
void (*_ClearCloseOnFork)(int fd);
void (*_SetupDisplay)(struct display *d);
void (*_LogError)(const char * fmt, ...);
void (*_SessionExit)(struct display *d, int status, int removeAuth);
void (*_DeleteXloginResources)(struct display *d, Display *dpy);
int (*_source)(char **environ, char *file);
char **(*_defaultEnv)(void);
char **(*_setEnv)(char **e, const char *name, const char *value);
char **(*_putEnv)(const char *string, char **env);
char **(*_parseArgs)(char **argv, const char *string);
void (*_printEnv)(char **e);
char **(*_systemEnv)(struct display *d, char *user, char *home);
void (*_LogOutOfMem)(const char * fmt, ...);
SETGRENT_TYPE (*_setgrent)(void); /* no longer used */
struct group *(*_getgrent)(void); /* no longer used */
void (*_endgrent)(void); /* no longer used */
struct passwd *(*_getpwnam)(GETPWNAM_ARGS);
void (*_endpwent)(void);
char *(*_crypt)(CRYPT_ARGS);
};
/*
* Return values for GreetUser();
* Values must be explictly defined because the greet library
* may come from a different vendor.
* Negative values indicate an error.
*/
typedef enum {
Greet_Session_Over = 0, /* session managed and over */
Greet_Success = 1, /* greet succeeded, session not managed */
Greet_Failure = -1 /* greet failed */
} greet_user_rtn;
/*
* GreetUser can either handle the user's session or allow xdm to do it.
* The return or exit status of GreetUser indicates to xdm whether it
* should start a session.
*
* GreetUser is passed the xdm struct display pointer, a pointer to a
* Display, and pointers to greet and verify structs. If it expectes xdm
* to run the session, it fills in the Display pointer and the fields
* of the greet and verify structs.
*
* The verify struct includes the uid, gid, arguments to run the session,
* environment for the session, and environment for startup/reset.
*
* The greet struct includes the user's name and password but these are
* really only needed if xdm is compiled with a user-based authorization
* option such as SECURE_RPC or K5AUTH.
*/
extern greet_user_rtn GreetUser(struct display *, Display **,
struct verify_info *, struct greet_info *, struct dlfuncs *);
typedef greet_user_rtn (*GreetUserProc)(struct display *, Display **,
struct verify_info *, struct greet_info *, struct dlfuncs *dlfcns);
#ifdef GREET_LIB
/*
* The greeter uses some symbols from the main xdm executable. Since some
* dynamic linkers are broken, we need to fix things up so that the symbols
* are referenced indirectly through function pointers. The definitions
* here, are used to hold the pointers to the functions in the main xdm
* executable. The pointers are filled in when the GreetUser function is
* called, with the pointer values passed as a paramter.
*/
extern int (*__xdm_PingServer)(struct display *d, Display *alternateDpy);
extern void (*__xdm_SessionPingFailed)(struct display *d);
extern void (*__xdm_Debug)(const char * fmt, ...);
extern void (*__xdm_RegisterCloseOnFork)(int fd);
extern void (*__xdm_SecureDisplay)(struct display *d, Display *dpy);
extern void (*__xdm_UnsecureDisplay)(struct display *d, Display *dpy);
extern void (*__xdm_ClearCloseOnFork)(int fd);
extern void (*__xdm_SetupDisplay)(struct display *d);
extern void (*__xdm_LogError)(const char * fmt, ...);
extern void (*__xdm_SessionExit)(struct display *d, int status, int removeAuth);
extern void (*__xdm_DeleteXloginResources)(struct display *d, Display *dpy);
extern int (*__xdm_source)(char **environ, char *file);
extern char **(*__xdm_defaultEnv)(void);
extern char **(*__xdm_setEnv)(char **e, const char *name, const char *value);
extern char **(*__xdm_putEnv)(const char *string, char **env);
extern char **(*__xdm_parseArgs)(char **argv, const char *string);
extern void (*__xdm_printEnv)(char **e);
extern char **(*__xdm_systemEnv)(struct display *d, char *user, char *home);
extern void (*__xdm_LogOutOfMem)(const char * fmt, ...);
extern void (*__xdm_setgrent)(void);
extern struct group *(*__xdm_getgrent)(void);
extern void (*__xdm_endgrent)(void);
# ifdef HAVE_GETSPNAM
extern struct spwd *(*__xdm_getspnam)(GETSPNAM_ARGS);
# ifndef QNX4
extern void (*__xdm_endspent)(void);
# endif /* QNX4 doesn't use endspent */
# endif
extern struct passwd *(*__xdm_getpwnam)(GETPWNAM_ARGS);
# if defined(linux) || defined(__GLIBC__)
extern void (*__xdm_endpwent)(void);
# endif
extern char *(*__xdm_crypt)(CRYPT_ARGS);
# ifdef USE_PAM
extern pam_handle_t **(*__xdm_thepamhp)(void);
# endif
/*
* Force the shared library to call through the function pointer
* initialized during the initial call into the library.
*/
# define PingServer (*__xdm_PingServer)
# define SessionPingFailed (*__xdm_SessionPingFailed)
# define Debug (*__xdm_Debug)
# define RegisterCloseOnFork (*__xdm_RegisterCloseOnFork)
# define SecureDisplay (*__xdm_SecureDisplay)
# define UnsecureDisplay (*__xdm_UnsecureDisplay)
# define ClearCloseOnFork (*__xdm_ClearCloseOnFork)
# define SetupDisplay (*__xdm_SetupDisplay)
# define LogError (*__xdm_LogError)
# define SessionExit (*__xdm_SessionExit)
# define DeleteXloginResources (*__xdm_DeleteXloginResources)
# define source (*__xdm_source)
# define defaultEnv (*__xdm_defaultEnv)
# define setEnv (*__xdm_setEnv)
# define putEnv (*__xdm_putEnv)
# define parseArgs (*__xdm_parseArgs)
# define printEnv (*__xdm_printEnv)
# define systemEnv (*__xdm_systemEnv)
# define LogOutOfMem (*__xdm_LogOutOfMem)
# define setgrent (*__xdm_setgrent)
# define getgrent (*__xdm_getgrent)
# define endgrent (*__xdm_endgrent)
# ifdef HAVE_GETSPNAM
# define getspnam (*__xdm_getspnam)
# ifndef QNX4
# define endspent (*__xdm_endspent)
# endif /* QNX4 doesn't use endspent */
# endif
# define getpwnam (*__xdm_getpwnam)
# if defined(linux) || defined(__GLIBC__)
# define endpwent (*__xdm_endpwent)
# endif
# define crypt (*__xdm_crypt)
# ifdef USE_PAM
# define thepamhp (*__xdm_thepamhp)
# endif
#endif /* GREET_LIB */
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