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git://git.code.sf.net/p/cdesktopenv/code
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121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
/***********************************************************************
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* *
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* This software is part of the ast package *
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* Copyright (c) 1985-2011 AT&T Intellectual Property *
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* Copyright (c) 2020-2022 Contributors to ksh 93u+m *
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* and is licensed under the *
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* Eclipse Public License, Version 1.0 *
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* by AT&T Intellectual Property *
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* *
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* A copy of the License is available at *
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* http://www.eclipse.org/org/documents/epl-v10.html *
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* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
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* *
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* Information and Software Systems Research *
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* AT&T Research *
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* Florham Park NJ *
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* *
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* Glenn Fowler <gsf@research.att.com> *
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* David Korn <dgk@research.att.com> *
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* Phong Vo <kpv@research.att.com> *
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* *
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***********************************************************************/
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/*
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* Glenn Fowler
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* AT&T Bell Laboratories
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*
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* group name -> GID number
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*/
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#if defined(__STDPP__directive) && defined(__STDPP__hide)
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__STDPP__directive pragma pp:hide getgrgid getgrnam getpwnam
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#else
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#define getgrgid ______getgrgid
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#define getgrnam ______getgrnam
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#define getpwnam ______getpwnam
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#endif
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#include <ast.h>
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#include <cdt.h>
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#include <pwd.h>
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#include <grp.h>
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#if defined(__STDPP__directive) && defined(__STDPP__hide)
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__STDPP__directive pragma pp:nohide getgrgid getgrnam getpwnam
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#else
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#undef getgrgid
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#undef getgrnam
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#undef getpwnam
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#endif
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extern struct group* getgrgid(gid_t);
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extern struct group* getgrnam(const char*);
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extern struct passwd* getpwnam(const char*);
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typedef struct Id_s
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{
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Dtlink_t link;
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int id;
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char name[1];
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} Id_t;
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/*
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* return GID number for given group name
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* gr->gr_gid attempted first, then pw->pw_gid
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* -1 on first error for a given name
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* -2 on subsequent errors for a given name
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*/
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int
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strgid(const char* name)
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{
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register Id_t* ip;
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register struct group* gr;
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register struct passwd* pw;
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int id;
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char* e;
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static Dt_t* dict;
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static Dtdisc_t disc;
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if (!dict)
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{
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disc.key = offsetof(Id_t, name);
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dict = dtopen(&disc, Dtset);
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}
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else if (ip = (Id_t*)dtmatch(dict, name))
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return ip->id;
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if (gr = getgrnam(name))
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id = gr->gr_gid;
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else if (pw = getpwnam(name))
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id = pw->pw_gid;
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else
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{
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id = strtol(name, &e, 0);
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#if _WINIX
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if (!*e)
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{
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if (!getgrgid(id))
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id = -1;
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}
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else if (!streq(name, "sys"))
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id = -1;
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else if (gr = getgrnam("Administrators"))
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id = gr->gr_gid;
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else if (pw = getpwnam("Administrator"))
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id = pw->pw_gid;
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else
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id = -1;
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#else
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if (*e || !getgrgid(id))
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id = -1;
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#endif
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}
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if (dict && (ip = newof(0, Id_t, 1, strlen(name))))
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{
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strcpy(ip->name, name);
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ip->id = id >= 0 ? id : -2;
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dtinsert(dict, ip);
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}
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return id;
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}
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