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/*
Unix SMB/Netbios implementation.
Version 1.9.
Security context tests
Copyright (C) Tim Potter 2000
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "se_access_check_utils.h"
void char_to_sid(struct dom_sid *sid, char *sid_str)
{
/* If it looks like a SID, call string_to_sid() else look it up
using wbinfo. */
if (strncmp(sid_str, "S-", 2) == 0) {
string_to_sid(sid, sid_str);
} else {
struct winbindd_request request;
struct winbindd_response response;
/* Send off request */
ZERO_STRUCT(request);
ZERO_STRUCT(response);
fstrcpy(request.data.name, sid_str);
if (winbindd_request(WINBINDD_LOOKUPNAME, &request,
&response) != NSS_STATUS_SUCCESS) {
printf("FAIL: unable to look up sid for name %s\n",
sid_str);
exit(1);
}
string_to_sid(sid, response.data.sid.sid);
printf("converted char %s to sid %s\n", sid_str,
response.data.sid.sid);
}
}
/* Construct an ACL from a list of ace_entry structures */
SEC_ACL *build_acl(struct ace_entry *ace_list)
{
SEC_ACE *aces = NULL;
SEC_ACL *result;
int num_aces = 0;
if (ace_list == NULL) return NULL;
/* Create aces */
while(ace_list->sid) {
SEC_ACCESS sa;
struct dom_sid sid;
/* Create memory for new ACE */
if (!(aces = Realloc(aces,
sizeof(SEC_ACE) * (num_aces + 1)))) {
return NULL;
}
/* Create ace */
init_sec_access(&sa, ace_list->mask);
char_to_sid(&sid, ace_list->sid);
init_sec_ace(&aces[num_aces], &sid, ace_list->type,
sa, ace_list->flags);
num_aces++;
ace_list++;
}
/* Create ACL from list of ACEs */
result = make_sec_acl(ACL_REVISION, num_aces, aces);
free(aces);
return result;
}
/* Make a security descriptor */
SEC_DESC *build_sec_desc(struct ace_entry *dacl, struct ace_entry *sacl,
char *owner_sid, char *group_sid)
{
struct dom_sid the_owner_sid, the_group_sid;
SEC_ACL *the_dacl, *the_sacl;
SEC_DESC *result;
size_t size;
/* Build up bits of security descriptor */
char_to_sid(&the_owner_sid, owner_sid);
char_to_sid(&the_group_sid, group_sid);
the_dacl = build_acl(dacl);
the_sacl = build_acl(sacl);
result = make_sec_desc(SEC_DESC_REVISION,
SEC_DESC_SELF_RELATIVE | SEC_DESC_DACL_PRESENT,
&the_owner_sid, &the_group_sid,
the_sacl, the_dacl, &size);
free_sec_acl(&the_dacl);
free_sec_acl(&the_sacl);
return result;
}
/* Iterate over password database and call a user-specified function */
void visit_pwdb(BOOL (*fn)(struct passwd *pw, int ngroups, gid_t *groups))
{
struct passwd *pw;
int ngroups;
gid_t *groups;
setpwent();
while ((pw = getpwent())) {
BOOL result;
/* Get grouplist */
ngroups = getgroups(0, NULL);
groups = malloc(sizeof(gid_t) * ngroups);
getgroups(ngroups, groups);
/* Call function */
result = fn(pw, ngroups, groups);
if (!result) break;
/* Clean up */
free(groups);
}
endpwent();
}
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