/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2011 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* Glenn Fowler
* AT&T Bell Laboratories
*
* gid name -> number
*/
#if defined(__STDPP__directive) && defined(__STDPP__hide)
__STDPP__directive pragma pp:hide getgrgid getgrnam getpwnam
#else
#define getgrgid ______getgrgid
#define getgrnam ______getgrnam
#define getpwnam ______getpwnam
#endif
#include <ast.h>
#include <cdt.h>
#include <pwd.h>
#include <grp.h>
#if defined(__STDPP__directive) && defined(__STDPP__hide)
__STDPP__directive pragma pp:nohide getgrgid getgrnam getpwnam
#else
#undef getgrgid
#undef getgrnam
#undef getpwnam
#endif
extern struct group* getgrgid(gid_t);
extern struct group* getgrnam(const char*);
extern struct passwd* getpwnam(const char*);
typedef struct Id_s
{
Dtlink_t link;
int id;
char name[1];
} Id_t;
/*
* return gid number given gid/uid name
* gid attempted first, then uid->pw_gid
* -1 on first error for a given name
* -2 on subsequent errors for a given name
*/
int
strgid(const char* name)
{
register Id_t* ip;
register struct group* gr;
register struct passwd* pw;
int id;
char* e;
static Dt_t* dict;
static Dtdisc_t disc;
if (!dict)
{
disc.key = offsetof(Id_t, name);
dict = dtopen(&disc, Dthash);
}
else if (ip = (Id_t*)dtmatch(dict, name))
return ip->id;
if (gr = getgrnam(name))
id = gr->gr_gid;
else if (pw = getpwnam(name))
id = pw->pw_gid;
else
{
id = strtol(name, &e, 0);
#if _WINIX
if (!*e)
{
if (!getgrgid(id))
id = -1;
}
else if (!streq(name, "sys"))
id = -1;
else if (gr = getgrnam("Administrators"))
id = gr->gr_gid;
else if (pw = getpwnam("Administrator"))
id = pw->pw_gid;
else
id = -1;
#else
if (*e || !getgrgid(id))
id = -1;
#endif
}
if (dict && (ip = newof(0, Id_t, 1, strlen(name))))
{
strcpy(ip->name, name);
ip->id = id >= 0 ? id : -2;
dtinsert(dict, ip);
}
return id;
}