| /* from OpenBSD: getgrouplist.c,v 1.12 2005/08/08 08:05:34 espie Exp */ |
| /* |
| * Copyright (c) 1991, 1993 |
| * 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. 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. |
| */ |
| |
| /* OPENBSD ORIGINAL: lib/libc/gen/getgrouplist.c */ |
| |
| #include "includes.h" |
| |
| #ifndef HAVE_GETGROUPLIST |
| |
| /* |
| * get credential |
| */ |
| #include <sys/types.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <grp.h> |
| |
| int |
| getgrouplist(const char *uname, gid_t agroup, gid_t *groups, int *grpcnt) |
| { |
| struct group *grp; |
| int i, ngroups; |
| int ret, maxgroups; |
| int bail; |
| |
| ret = 0; |
| ngroups = 0; |
| maxgroups = *grpcnt; |
| |
| /* |
| * install primary group |
| */ |
| if (ngroups >= maxgroups) { |
| *grpcnt = ngroups; |
| return (-1); |
| } |
| groups[ngroups++] = agroup; |
| |
| /* |
| * Scan the group file to find additional groups. |
| */ |
| setgrent(); |
| while ((grp = getgrent())) { |
| if (grp->gr_gid == agroup) |
| continue; |
| for (bail = 0, i = 0; bail == 0 && i < ngroups; i++) |
| if (groups[i] == grp->gr_gid) |
| bail = 1; |
| if (bail) |
| continue; |
| for (i = 0; grp->gr_mem[i]; i++) { |
| if (!strcmp(grp->gr_mem[i], uname)) { |
| if (ngroups >= maxgroups) { |
| ret = -1; |
| goto out; |
| } |
| groups[ngroups++] = grp->gr_gid; |
| break; |
| } |
| } |
| } |
| out: |
| endgrent(); |
| *grpcnt = ngroups; |
| return (ret); |
| } |
| |
| #endif /* HAVE_GETGROUPLIST */ |
