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EnigmA Amiga Run 1996 June
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EnigmA AMIGA RUN 08 (1996)(G.R. Edizioni)(IT)[!][issue 1996-06][EARSAN CD VII].iso
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earcd
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gcc
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ixemlsrc.lha
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ixemul
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ixnet
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getgrent.c
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C/C++ Source or Header
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1996-03-13
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5KB
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220 lines
/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getgrent.c 5.9 (Berkeley) 4/1/91";
#endif /* LIBC_SCCS and not lint */
#define KERNEL
#include "ixnet.h"
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <grp.h>
static FILE *_gr_fp;
static struct group _gr_group;
static int _gr_stayopen;
static int grscan(), start_gr();
#define MAXGRP 200
static char *members[MAXGRP];
#define MAXLINELENGTH 1024
struct group *
getgrent(void) {
register struct ixnet *p = (struct ixnet *)u.u_ixnet;
if (p->u_networkprotocol == IX_NETWORK_AMITCP) {
return UG_getgrent(p->u_UserGroupBase);
}
if ((!_gr_fp && !start_gr()) || !grscan(0, 0, NULL))
return(NULL);
return(&_gr_group);
}
struct group *
getgrnam(const char *name) {
register struct ixnet *p = (struct ixnet *)u.u_ixnet;
if (p->u_networkprotocol == IX_NETWORK_AMITCP) {
struct group *err = UG_getgrnam(p->u_UserGroupBase,name);
if (!err) {
errno = ug_GetErr(p->u_UserGroupBase);
}
return err;
}
else {
int rval;
if (!start_gr())
return(NULL);
rval = grscan(1, 0, name);
if (!_gr_stayopen)
endgrent();
return(rval ? &_gr_group : NULL);
}
}
struct group *
getgrgid(gid_t gid) {
register struct ixnet *p = (struct ixnet *)u.u_ixnet;
if (p->u_networkprotocol == IX_NETWORK_AMITCP) {
struct group *err;
err = UG_getgrgid(p->u_UserGroupBase,gid);
if (!err) {
errno = ug_GetErr(p->u_UserGroupBase);
}
return err;
}
else {
int rval;
if (!start_gr())
return(NULL);
rval = grscan(1, gid, NULL);
if (!_gr_stayopen)
endgrent();
return(rval ? &_gr_group : NULL);
}
}
static int
start_gr(void) {
if (_gr_fp) {
rewind(_gr_fp);
return(1);
}
return((_gr_fp = fopen(_PATH_GROUP, "r")) ? 1 : 0);
}
int
setgrent(void) {
register struct ixnet *p = (struct ixnet *)u.u_ixnet;
if (p->u_networkprotocol == IX_NETWORK_AMITCP) {
return UG_setgrent(p->u_UserGroupBase);
}
return setgroupent(0);
}
int
setgroupent(int stayopen) {
register struct ixnet *p = (struct ixnet *)u.u_ixnet;
if (p->u_networkprotocol != IX_NETWORK_AMITCP) {
if (!start_gr())
return(0);
_gr_stayopen = stayopen;
}
return 1;
}
void
endgrent(void) {
register struct ixnet *p = (struct ixnet *)u.u_ixnet;
if (p->u_networkprotocol == IX_NETWORK_AMITCP) {
UG_endgrent(p->u_UserGroupBase);
}
if (_gr_fp) {
(void)fclose(_gr_fp);
_gr_fp = NULL;
}
}
static int
grscan(int search, int gid, char *name) {
register char *cp, **m;
char *bp;
char *fgets(), *strsep(), *index();
static char line[MAXLINELENGTH];
for (;;) {
if (!fgets(line, sizeof(line), _gr_fp))
return(0);
bp = line;
/* skip lines that are too big */
if (!index(line, '\n')) {
int ch;
while ((ch = getc(_gr_fp)) != '\n' && ch != EOF)
;
continue;
}
_gr_group.gr_name = strsep(&bp, ":\n");
if (search && name && strcmp(_gr_group.gr_name, name))
continue;
_gr_group.gr_passwd = strsep(&bp, ":\n");
if (!(cp = strsep(&bp, ":\n")))
continue;
_gr_group.gr_gid = atoi(cp);
if (search && name == NULL && _gr_group.gr_gid != gid)
continue;
for (m = _gr_group.gr_mem = members;; ++m) {
if (m == &members[MAXGRP - 1]) {
*m = NULL;
break;
}
if ((*m = strsep(&bp, ", \n")) == NULL)
break;
}
return(1);
}
/* NOTREACHED */
}
int
setgroups (int ngroups, const int *gidset)
{
register struct ixnet *p = u.u_ixnet;
if (p->u_networkprotocol == IX_NETWORK_AMITCP) {
return UG_setgroups(p->u_UserGroupBase,ngroups,gidset);
}
else
return (ngroups >= 1) ? 0 : -1;
}