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- djm@cvs.openbsd.org 2008/07/04 03:44:59

Browse Source 
[servconf.c groupaccess.h groupaccess.c]
     support negation of groups in "Match group" block (bz#1315); ok dtucker@
This commit is contained in:
Darren Tucker 2008-07-04 13:51:12 +10:00
parent f5cafb0c85
commit b03fd02aed
4 changed files with 38 additions and 26 deletions
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5
ChangeLog
View File

@ -12,6 +12,9 @@
- otto@cvs.openbsd.org 2008/07/03 21:46:58
[auth2-pubkey.c]
avoid nasty double free; ok dtucker@ djm@
- djm@cvs.openbsd.org 2008/07/04 03:44:59
[servconf.c groupaccess.h groupaccess.c]
support negation of groups in "Match group" block (bz#1315); ok dtucker@
20080702
- (dtucker) OpenBSD CVS Sync
@ -4547,4 +4550,4 @@
OpenServer 6 and add osr5bigcrypt support so when someone migrates
passwords between UnixWare and OpenServer they will still work. OK dtucker@
$Id: ChangeLog,v 1.5051 2008/07/04 02:54:25 dtucker Exp $
$Id: ChangeLog,v 1.5052 2008/07/04 03:51:12 dtucker Exp $

27
groupaccess.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: groupaccess.c,v 1.12 2006/08/03 03:34:42 deraadt Exp $ */
/* $OpenBSD: groupaccess.c,v 1.13 2008/07/04 03:44:59 djm Exp $ */
/*
* Copyright (c) 2001 Kevin Steves. All rights reserved.
*
@ -31,6 +31,7 @@
#include <grp.h>
#include <unistd.h>
#include <stdarg.h>
#include <string.h>
#include "xmalloc.h"
#include "groupaccess.h"
@ -87,6 +88,30 @@ ga_match(char * const *groups, int n)
return 0;
}
/*
* Return 1 if one of user's groups matches group_pattern list.
* Return 0 on negated or no match.
*/
int
ga_match_pattern_list(const char *group_pattern)
{
int i, found = 0;
size_t len = strlen(group_pattern);
for (i = 0; i < ngroups; i++) {
switch (match_pattern_list(groups_byname[i],
group_pattern, len, 0)) {
case -1:
return 0; /* Negated match wins */
case 0:
continue;
case 1:
found = 1;
}
}
return found;
}
/*
* Free memory allocated for group access list.
*/

3
groupaccess.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: groupaccess.h,v 1.7 2006/08/03 03:34:42 deraadt Exp $ */
/* $OpenBSD: groupaccess.h,v 1.8 2008/07/04 03:44:59 djm Exp $ */
/*
* Copyright (c) 2001 Kevin Steves. All rights reserved.
@ -29,6 +29,7 @@
int ga_init(const char *, gid_t);
int ga_match(char * const *, int);
int ga_match_pattern_list(const char *);
void ga_free(void);
#endif

29
servconf.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: servconf.c,v 1.185 2008/07/02 02:24:18 djm Exp $ */
/* $OpenBSD: servconf.c,v 1.186 2008/07/04 03:44:59 djm Exp $ */
/*
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
@ -525,24 +525,8 @@ static int
match_cfg_line_group(const char *grps, int line, const char *user)
{
int result = 0;
u_int ngrps = 0;
char *arg, *p, *cp, *grplist[MAX_MATCH_GROUPS];
struct passwd *pw;
/*
* Even if we do not have a user yet, we still need to check for
* valid syntax.
*/
arg = cp = xstrdup(grps);
while ((p = strsep(&cp, ",")) != NULL && *p != '\0') {
if (ngrps >= MAX_MATCH_GROUPS) {
error("line %d: too many groups in Match Group", line);
result = -1;
goto out;
}
grplist[ngrps++] = p;
}
if (user == NULL)
goto out;
@ -552,17 +536,16 @@ match_cfg_line_group(const char *grps, int line, const char *user)
} else if (ga_init(pw->pw_name, pw->pw_gid) == 0) {
debug("Can't Match group because user %.100s not in any group "
"at line %d", user, line);
} else if (ga_match(grplist, ngrps) != 1) {
debug("user %.100s does not match group %.100s at line %d",
user, arg, line);
} else if (ga_match_pattern_list(grps) != 1) {
debug("user %.100s does not match group list %.100s at line %d",
user, grps, line);
} else {
debug("user %.100s matched group %.100s at line %d", user,
arg, line);
debug("user %.100s matched group list %.100s at line %d", user,
grps, line);
result = 1;
}
out:
ga_free();
xfree(arg);
return result;
}