| Kevin Steves | 886b06c | 2001-01-14 00:35:19 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1991, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. All advertising materials mentioning features or use of this software |
| 14 | * must display the following acknowledgement: |
| 15 | * This product includes software developed by the University of |
| 16 | * California, Berkeley and its contributors. |
| 17 | * 4. Neither the name of the University nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | #include "includes.h" |
| 35 | |
| 36 | #ifndef HAVE_GETGROUPLIST |
| 37 | |
| 38 | #if defined(LIBC_SCCS) && !defined(lint) |
| 39 | static char rcsid[] = "$OpenBSD: getgrouplist.c,v 1.7 1997/08/19 19:13:27 deraadt Exp $"; |
| 40 | #endif /* LIBC_SCCS and not lint */ |
| 41 | |
| 42 | /* |
| 43 | * get credential |
| 44 | */ |
| 45 | #include <sys/types.h> |
| 46 | #include <string.h> |
| 47 | #include <grp.h> |
| 48 | |
| 49 | int |
| 50 | getgrouplist(uname, agroup, groups, grpcnt) |
| 51 | const char *uname; |
| 52 | gid_t agroup; |
| 53 | register gid_t *groups; |
| 54 | int *grpcnt; |
| 55 | { |
| 56 | register struct group *grp; |
| 57 | register int i, ngroups; |
| 58 | int ret, maxgroups; |
| 59 | int bail; |
| 60 | |
| 61 | ret = 0; |
| 62 | ngroups = 0; |
| 63 | maxgroups = *grpcnt; |
| 64 | |
| 65 | /* |
| 66 | * install primary group |
| 67 | */ |
| 68 | if (ngroups >= maxgroups) { |
| 69 | *grpcnt = ngroups; |
| 70 | return (-1); |
| 71 | } |
| 72 | groups[ngroups++] = agroup; |
| 73 | |
| 74 | /* |
| 75 | * Scan the group file to find additional groups. |
| 76 | */ |
| 77 | setgrent(); |
| 78 | while ((grp = getgrent())) { |
| 79 | if (grp->gr_gid == agroup) |
| 80 | continue; |
| 81 | for (bail = 0, i = 0; bail == 0 && i < ngroups; i++) |
| 82 | if (groups[i] == grp->gr_gid) |
| 83 | bail = 1; |
| 84 | if (bail) |
| 85 | continue; |
| 86 | for (i = 0; grp->gr_mem[i]; i++) { |
| 87 | if (!strcmp(grp->gr_mem[i], uname)) { |
| 88 | if (ngroups >= maxgroups) { |
| 89 | ret = -1; |
| 90 | goto out; |
| 91 | } |
| 92 | groups[ngroups++] = grp->gr_gid; |
| 93 | break; |
| 94 | } |
| 95 | } |
| 96 | } |
| 97 | out: |
| 98 | endgrent(); |
| 99 | *grpcnt = ngroups; |
| 100 | return (ret); |
| 101 | } |
| 102 | |
| 103 | #endif /* HAVE_GETGROUPLIST */ |