r4073: - added a set of lsa helper routines to make lsa lookups that are

  related to filesharing. For example, in order to manipulate ACLs
  properly its important to be able to call LookupSids, and to be able
  to lookup what privileges a SID has.

- added 3 new commands to smbclient "lookupname", "lookupsid" and
  "privileges"
(This used to be commit 8780c40f0539da72652d17455e98fcaee6d197d1)

1 files changed, 299 insertions, 0 deletions

diff --git a/source4/libcli/util/clilsa.c b/source4/libcli/util/clilsa.c
new file mode 100644
index 0000000000..c3c7f8cc77
--- /dev/null
+++ b/source4/libcli/util/clilsa.c
@@ -0,0 +1,299 @@
+/* 
+   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_p(cli, struct smblsa_state);
+	if (lsa == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	lsa->ipc_tree = smbcli_tree_init(cli->session);
+	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.cnum;
+
+	/* open the LSA pipe */
+	status = dcerpc_pipe_open_smb(&lsa->pipe, 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(cli, 0);
+	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(mem_ctx, 0);
+
+	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_p(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(mem_ctx, 0);
+	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;	
+}