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Diffstat (limited to 'greet.h')
| -rw-r--r-- | greet.h | 187 |
1 files changed, 187 insertions, 0 deletions
@@ -0,0 +1,187 @@ +/* $Xorg: greet.h,v 1.4 2001/02/09 02:05:40 xorgcvs Exp $ */ +/* + +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 <X11/Xlib.h> + +struct dlfuncs { + int (*_PingServer)(); + int (*_SessionPingFailed)(); + int (*_Debug)(); + int (*_RegisterCloseOnFork)(); + int (*_SecureDisplay)(); + int (*_UnsecureDisplay)(); + int (*_ClearCloseOnFork)(); + int (*_SetupDisplay)(); + int (*_LogError)(); + int (*_SessionExit)(); + int (*_DeleteXloginResources)(); + int (*_source)(); + char **(*_defaultEnv)(); + char **(*_setEnv)(); + char **(*_parseArgs)(); + int (*_printEnv)(); + char **(*_systemEnv)(); + int (*_LogOutOfMem)(); + void (*_setgrent)(); /* no longer used */ + struct group *(*_getgrent)(); /* no longer used */ + void (*_endgrent)(); /* no longer used */ +#ifdef USESHADOW + struct spwd *(*_getspnam)(); + void (*_endspent)(); +#endif + struct passwd *(*_getpwnam)(); + char *(*_crypt)(); +}; + +/* + * 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( +#if NeedFunctionPrototypes + struct display *d, + Display **dpy, + struct verify_info *verify, + struct greet_info *greet, + struct dlfuncs *dlfcns +#endif +); + +typedef greet_user_rtn (*GreetUserProc)( +#if NeedFunctionPrototypes + struct display *, + Display **, + struct verify_info *, + struct greet_info *, + struct dlfuncs *dlfcns +#endif +); + +#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)(); +extern int (*__xdm_SessionPingFailed)(); +extern int (*__xdm_Debug)(); +extern int (*__xdm_RegisterCloseOnFork)(); +extern int (*__xdm_SecureDisplay)(); +extern int (*__xdm_UnsecureDisplay)(); +extern int (*__xdm_ClearCloseOnFork)(); +extern int (*__xdm_SetupDisplay)(); +extern int (*__xdm_LogError)(); +extern int (*__xdm_SessionExit)(); +extern int (*__xdm_DeleteXloginResources)(); +extern int (*__xdm_source)(); +extern char **(*__xdm_defaultEnv)(); +extern char **(*__xdm_setEnv)(); +extern char **(*__xdm_parseArgs)(); +extern int (*__xdm_printEnv)(); +extern char **(*__xdm_systemEnv)(); +extern int (*__xdm_LogOutOfMem)(); +extern void (*__xdm_setgrent)(); +extern struct group *(*__xdm_getgrent)(); +extern void (*__xdm_endgrent)(); +#ifdef USESHADOW +extern struct spwd *(*__xdm_getspnam)(); +extern void (*__xdm_endspent)(); +#endif +extern struct passwd *(*__xdm_getpwnam)(); +extern char *(*__xdm_crypt)(); + +/* + * 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 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 USESHADOW +#define getspnam (*__xdm_getspnam) +#define endspent (*__xdm_endspent) +#endif +#define getpwnam (*__xdm_getpwnam) +#define crypt (*__xdm_crypt) + +#endif /* GREET_LIB */ |