219 lines
8.3 KiB
C
219 lines
8.3 KiB
C
/*
|
|
|
|
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 {
|
|
int (*_PingServer)(struct display *d, Display *alternateDpy);
|
|
void (*_SessionPingFailed)(struct display *d);
|
|
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 */
|
|
#ifdef HAVE_GETSPNAM
|
|
struct spwd *(*_getspnam)(GETSPNAM_ARGS);
|
|
# ifndef QNX4
|
|
void (*_endspent)(void);
|
|
# endif /* QNX4 doesn't use endspent */
|
|
#endif
|
|
struct passwd *(*_getpwnam)(GETPWNAM_ARGS);
|
|
#if defined(linux) || defined(__GLIBC__)
|
|
void (*_endpwent)(void);
|
|
#endif
|
|
char *(*_crypt)(CRYPT_ARGS);
|
|
#ifdef USE_PAM
|
|
pam_handle_t **(*_thepamhp)(void);
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
* 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 */
|