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57c30117c1
[atomicio.c auth-bsdauth.c auth-chall.c auth-options.c auth-passwd.c]
[auth-rh-rsa.c auth-rhosts.c auth-rsa.c auth-skey.c auth.c auth1.c]
[auth2-chall.c auth2-hostbased.c auth2-kbdint.c auth2-none.c]
[auth2-passwd.c auth2-pubkey.c auth2.c authfd.c authfile.c bufaux.c]
[buffer.c canohost.c channels.c cipher-3des1.c cipher-bf1.c]
[cipher-ctr.c cipher.c cleanup.c clientloop.c compat.c compress.c]
[deattack.c dh.c dispatch.c fatal.c groupaccess.c hostfile.c kex.c]
[kexdh.c kexdhc.c kexdhs.c kexgex.c kexgexc.c kexgexs.c key.c log.c]
[mac.c match.c md-sha256.c misc.c monitor.c monitor_fdpass.c]
[monitor_mm.c monitor_wrap.c msg.c nchan.c packet.c progressmeter.c]
[readconf.c readpass.c rsa.c scard.c scp.c servconf.c serverloop.c]
[session.c sftp-client.c sftp-common.c sftp-glob.c sftp-server.c]
[sftp.c ssh-add.c ssh-agent.c ssh-dss.c ssh-keygen.c ssh-keyscan.c]
[ssh-keysign.c ssh-rsa.c ssh.c sshconnect.c sshconnect1.c]
[sshconnect2.c sshd.c sshlogin.c sshpty.c sshtty.c ttymodes.c]
[uidswap.c uuencode.c xmalloc.c]
Put $OpenBSD$ tags back (as comments) to replace the RCSID()s that
Theo nuked - our scripts to sync -portable need them in the files
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/* $OpenBSD: groupaccess.c,v 1.8 2006/03/25 13:17:01 djm Exp $ */
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/*
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* Copyright (c) 2001 Kevin Steves. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "includes.h"
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#include "groupaccess.h"
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#include "xmalloc.h"
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#include "match.h"
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#include "log.h"
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static int ngroups;
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static char **groups_byname;
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/*
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* Initialize group access list for user with primary (base) and
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* supplementary groups. Return the number of groups in the list.
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*/
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int
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ga_init(const char *user, gid_t base)
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{
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gid_t *groups_bygid;
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int i, j;
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struct group *gr;
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if (ngroups > 0)
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ga_free();
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ngroups = NGROUPS_MAX;
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#if defined(HAVE_SYSCONF) && defined(_SC_NGROUPS_MAX)
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ngroups = MAX(NGROUPS_MAX, sysconf(_SC_NGROUPS_MAX));
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#endif
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groups_bygid = xmalloc(ngroups * sizeof(*groups_bygid));
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groups_byname = xmalloc(ngroups * sizeof(*groups_byname));
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if (getgrouplist(user, base, groups_bygid, &ngroups) == -1)
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logit("getgrouplist: groups list too small");
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for (i = 0, j = 0; i < ngroups; i++)
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if ((gr = getgrgid(groups_bygid[i])) != NULL)
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groups_byname[j++] = xstrdup(gr->gr_name);
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xfree(groups_bygid);
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return (ngroups = j);
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}
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/*
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* Return 1 if one of user's groups is contained in groups.
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* Return 0 otherwise. Use match_pattern() for string comparison.
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*/
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int
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ga_match(char * const *groups, int n)
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{
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int i, j;
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for (i = 0; i < ngroups; i++)
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for (j = 0; j < n; j++)
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if (match_pattern(groups_byname[i], groups[j]))
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return 1;
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return 0;
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}
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/*
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* Free memory allocated for group access list.
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*/
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void
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ga_free(void)
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{
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int i;
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if (ngroups > 0) {
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for (i = 0; i < ngroups; i++)
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xfree(groups_byname[i]);
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ngroups = 0;
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xfree(groups_byname);
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}
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}
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