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samba-mirror/source4/libcli/util/clilsa.c

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/*
Unix SMB/CIFS implementation.
lsa calls for file sharing connections
Copyright (C) Andrew Tridgell 2004
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
when dealing with ACLs the file sharing client code needs to
sometimes make LSA RPC calls. This code provides an easy interface
for doing those calls.
*/
#include "includes.h"
#include "libcli/raw/libcliraw.h"
#include "librpc/gen_ndr/ndr_lsa.h"
struct smblsa_state {
struct dcerpc_pipe *pipe;
struct smbcli_tree *ipc_tree;
struct policy_handle handle;
};
/*
establish the lsa pipe connection
*/
static NTSTATUS smblsa_connect(struct smbcli_state *cli)
{
struct smblsa_state *lsa;
NTSTATUS status;
struct lsa_OpenPolicy r;
uint16_t system_name = '\\';
union smb_tcon tcon;
struct lsa_ObjectAttribute attr;
struct lsa_QosInfo qos;
if (cli->lsa != NULL) {
return NT_STATUS_OK;
}
lsa = talloc(cli, struct smblsa_state);
if (lsa == NULL) {
return NT_STATUS_NO_MEMORY;
}
lsa->ipc_tree = smbcli_tree_init(cli->session, lsa, False);
if (lsa->ipc_tree == NULL) {
return NT_STATUS_NO_MEMORY;
}
/* connect to IPC$ */
tcon.generic.level = RAW_TCON_TCONX;
tcon.tconx.in.flags = 0;
tcon.tconx.in.password = data_blob(NULL, 0);
tcon.tconx.in.path = "ipc$";
tcon.tconx.in.device = "IPC";
status = smb_tree_connect(lsa->ipc_tree, lsa, &tcon);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(lsa);
return status;
}
lsa->ipc_tree->tid = tcon.tconx.out.tid;
lsa->pipe = dcerpc_pipe_init(lsa);
if (lsa->pipe == NULL) {
talloc_free(lsa);
return NT_STATUS_NO_MEMORY;
}
/* open the LSA pipe */
status = dcerpc_pipe_open_smb(lsa->pipe->conn, lsa->ipc_tree, DCERPC_LSARPC_NAME);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(lsa);
return status;
}
/* bind to the LSA pipe */
status = dcerpc_bind_auth_none(lsa->pipe, DCERPC_LSARPC_UUID, DCERPC_LSARPC_VERSION);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(lsa);
return status;
}
/* open a lsa policy handle */
qos.len = 0;
qos.impersonation_level = 2;
qos.context_mode = 1;
qos.effective_only = 0;
attr.len = 0;
attr.root_dir = NULL;
attr.object_name = NULL;
attr.attributes = 0;
attr.sec_desc = NULL;
attr.sec_qos = &qos;
r.in.system_name = &system_name;
r.in.attr = &attr;
r.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
r.out.handle = &lsa->handle;
status = dcerpc_lsa_OpenPolicy(lsa->pipe, lsa, &r);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(lsa);
return status;
}
cli->lsa = lsa;
return NT_STATUS_OK;
}
/*
return the set of privileges for the given sid
*/
NTSTATUS smblsa_sid_privileges(struct smbcli_state *cli, struct dom_sid *sid,
TALLOC_CTX *mem_ctx,
struct lsa_RightSet *rights)
{
NTSTATUS status;
struct lsa_EnumAccountRights r;
status = smblsa_connect(cli);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
r.in.handle = &cli->lsa->handle;
r.in.sid = sid;
r.out.rights = rights;
return dcerpc_lsa_EnumAccountRights(cli->lsa->pipe, mem_ctx, &r);
}
/*
check if a named sid has a particular named privilege
*/
NTSTATUS smblsa_sid_check_privilege(struct smbcli_state *cli,
const char *sid_str,
const char *privilege)
{
struct lsa_RightSet rights;
NTSTATUS status;
TALLOC_CTX *mem_ctx = talloc_new(cli);
struct dom_sid *sid;
unsigned i;
sid = dom_sid_parse_talloc(mem_ctx, sid_str);
if (sid == NULL) {
talloc_free(mem_ctx);
return NT_STATUS_INVALID_SID;
}
status = smblsa_sid_privileges(cli, sid, mem_ctx, &rights);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(mem_ctx);
return status;
}
for (i=0;i<rights.count;i++) {
if (strcmp(rights.names[i].string, privilege) == 0) {
talloc_free(mem_ctx);
return NT_STATUS_OK;
}
}
talloc_free(mem_ctx);
return NT_STATUS_NOT_FOUND;
}
/*
lookup a SID, returning its name
*/
NTSTATUS smblsa_lookup_sid(struct smbcli_state *cli,
const char *sid_str,
TALLOC_CTX *mem_ctx,
const char **name)
{
struct lsa_LookupSids r;
struct lsa_TransNameArray names;
struct lsa_SidArray sids;
uint32_t count = 1;
NTSTATUS status;
struct dom_sid *sid;
TALLOC_CTX *mem_ctx2 = talloc_new(mem_ctx);
status = smblsa_connect(cli);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
sid = dom_sid_parse_talloc(mem_ctx2, sid_str);
if (sid == NULL) {
return NT_STATUS_INVALID_SID;
}
names.count = 0;
names.names = NULL;
sids.num_sids = 1;
sids.sids = talloc(mem_ctx2, struct lsa_SidPtr);
sids.sids[0].sid = sid;
r.in.handle = &cli->lsa->handle;
r.in.sids = &sids;
r.in.names = &names;
r.in.level = 1;
r.in.count = &count;
r.out.count = &count;
r.out.names = &names;
status = dcerpc_lsa_LookupSids(cli->lsa->pipe, mem_ctx2, &r);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(mem_ctx2);
return status;
}
if (names.count != 1) {
talloc_free(mem_ctx2);
return NT_STATUS_UNSUCCESSFUL;
}
(*name) = talloc_asprintf(mem_ctx, "%s\\%s",
r.out.domains->domains[0].name.string,
names.names[0].name.string);
talloc_free(mem_ctx2);
return NT_STATUS_OK;
}
/*
lookup a name, returning its sid
*/
NTSTATUS smblsa_lookup_name(struct smbcli_state *cli,
const char *name,
TALLOC_CTX *mem_ctx,
const char **sid_str)
{
struct lsa_LookupNames r;
struct lsa_TransSidArray sids;
struct lsa_String names;
uint32_t count = 1;
NTSTATUS status;
struct dom_sid *sid;
TALLOC_CTX *mem_ctx2 = talloc_new(mem_ctx);
uint32_t rid;
status = smblsa_connect(cli);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
sids.count = 0;
sids.sids = NULL;
names.string = name;
r.in.handle = &cli->lsa->handle;
r.in.num_names = 1;
r.in.names = &names;
r.in.sids = &sids;
r.in.level = 1;
r.in.count = &count;
r.out.count = &count;
r.out.sids = &sids;
status = dcerpc_lsa_LookupNames(cli->lsa->pipe, mem_ctx2, &r);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(mem_ctx2);
return status;
}
if (sids.count != 1) {
talloc_free(mem_ctx2);
return NT_STATUS_UNSUCCESSFUL;
}
sid = r.out.domains->domains[0].sid;
rid = sids.sids[0].rid;
(*sid_str) = talloc_asprintf(mem_ctx, "%s-%u",
dom_sid_string(mem_ctx2, sid), rid);
talloc_free(mem_ctx2);
return NT_STATUS_OK;
}
/*
add a set of privileges to the given sid
*/
NTSTATUS smblsa_sid_add_privileges(struct smbcli_state *cli, struct dom_sid *sid,
TALLOC_CTX *mem_ctx,
struct lsa_RightSet *rights)
{
NTSTATUS status;
struct lsa_AddAccountRights r;
status = smblsa_connect(cli);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
r.in.handle = &cli->lsa->handle;
r.in.sid = sid;
r.in.rights = rights;
return dcerpc_lsa_AddAccountRights(cli->lsa->pipe, mem_ctx, &r);
}
/*
remove a set of privileges from the given sid
*/
NTSTATUS smblsa_sid_del_privileges(struct smbcli_state *cli, struct dom_sid *sid,
TALLOC_CTX *mem_ctx,
struct lsa_RightSet *rights)
{
NTSTATUS status;
struct lsa_RemoveAccountRights r;
status = smblsa_connect(cli);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
r.in.handle = &cli->lsa->handle;
r.in.sid = sid;
r.in.unknown = 0;
r.in.rights = rights;
return dcerpc_lsa_RemoveAccountRights(cli->lsa->pipe, mem_ctx, &r);
}