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* lib/defines.h: Define USER_NAME_MAX_LENGTH, based on utmp and

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default to 32.
	* libmisc/chkname.c: Use USER_NAME_MAX_LENGTH.
	* src/login.c: Use USER_NAME_MAX_LENGTH instead of the default 32.
	username also needs to be bigger than USER_NAME_MAX_LENGTH because
	it has to be nul-terminated.
This commit is contained in:
nekral-guest
2009-04-22 20:42:48 +00:00
parent eae8b63d4f
commit 3704745289
4 changed files with 31 additions and 11 deletions
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15
lib/defines.h
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@ -356,4 +356,19 @@ extern char *strerror ();
#define MAX(x,y) (((x) > (y)) ? (x) : (y))
#endif
/* Maximum length of usernames */
#ifdef HAVE_UTMPX_H
# define USER_NAME_MAX_LENGTH (sizeof (((struct utmpx *)NULL)->ut_user))
#else
# ifdef HAVE_STRUCT_UTMP_UT_USER
# define USER_NAME_MAX_LENGTH (sizeof (((struct utmp *)NULL)->ut_user))
# else
# ifdef HAVE_STRUCT_UTMP_UT_NAME
# define USER_NAME_MAX_LENGTH (sizeof (((struct utmp *)NULL)->ut_name))
# else
# define USER_NAME_MAX_LENGTH 32
# endif
# endif
#endif
#endif /* _DEFINES_H_ */