wmi-1.3.16 from opsview.com
This commit is contained in:
Are Casilla
@@ -0,0 +1,361 @@
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/*
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Unix SMB/CIFS implementation.
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Connect to the LSA pipe, given an smbcli_tree and possibly some
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credentials. Try ntlmssp, schannel and anon in that order.
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Copyright (C) Volker Lendecke 2005
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#include "libcli/composite/composite.h"
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#include "libcli/raw/libcliraw.h"
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#include "librpc/gen_ndr/ndr_lsa_c.h"
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/* Helper to initialize LSA with a specific auth methods. Verify by opening
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* the LSA policy. */
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struct init_lsa_state {
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struct composite_context *ctx;
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struct dcerpc_pipe *lsa_pipe;
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uint8_t auth_type;
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struct cli_credentials *creds;
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struct lsa_ObjectAttribute objectattr;
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struct lsa_OpenPolicy2 openpolicy;
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struct policy_handle *handle;
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};
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static void init_lsa_recv_pipe(struct composite_context *ctx);
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static void init_lsa_recv_anon_bind(struct composite_context *ctx);
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static void init_lsa_recv_auth_bind(struct composite_context *ctx);
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static void init_lsa_recv_openpol(struct rpc_request *req);
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struct composite_context *wb_init_lsa_send(TALLOC_CTX *mem_ctx,
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struct smbcli_tree *tree,
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uint8_t auth_type,
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struct cli_credentials *creds)
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{
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struct composite_context *result, *ctx;
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struct init_lsa_state *state;
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result = talloc(mem_ctx, struct composite_context);
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if (result == NULL) goto failed;
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result->state = COMPOSITE_STATE_IN_PROGRESS;
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result->async.fn = NULL;
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result->event_ctx = tree->session->transport->socket->event.ctx;
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state = talloc(result, struct init_lsa_state);
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if (state == NULL) goto failed;
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state->ctx = result;
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result->private_data = state;
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state->auth_type = auth_type;
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state->creds = creds;
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state->lsa_pipe = dcerpc_pipe_init(state, result->event_ctx);
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if (state->lsa_pipe == NULL) goto failed;
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ctx = dcerpc_pipe_open_smb_send(state->lsa_pipe->conn, tree,
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"\\lsarpc");
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ctx->async.fn = init_lsa_recv_pipe;
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ctx->async.private_data = state;
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return result;
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failed:
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talloc_free(result);
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return NULL;
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}
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static void init_lsa_recv_pipe(struct composite_context *ctx)
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{
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struct init_lsa_state *state =
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talloc_get_type(ctx->async.private_data,
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struct init_lsa_state);
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state->ctx->status = dcerpc_pipe_open_smb_recv(ctx);
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if (!composite_is_ok(state->ctx)) return;
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switch (state->auth_type) {
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case DCERPC_AUTH_TYPE_NONE:
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ctx = dcerpc_bind_auth_none_send(state, state->lsa_pipe,
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&dcerpc_table_lsarpc);
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composite_continue(state->ctx, ctx, init_lsa_recv_anon_bind,
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state);
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break;
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case DCERPC_AUTH_TYPE_NTLMSSP:
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case DCERPC_AUTH_TYPE_SCHANNEL:
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{
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uint8_t auth_type;
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if (lp_winbind_sealed_pipes()) {
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auth_type = DCERPC_AUTH_LEVEL_PRIVACY;
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} else {
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auth_type = DCERPC_AUTH_LEVEL_INTEGRITY;
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}
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if (state->creds == NULL) {
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composite_error(state->ctx, NT_STATUS_INTERNAL_ERROR);
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return;
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}
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ctx = dcerpc_bind_auth_send(state, state->lsa_pipe,
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&dcerpc_table_lsarpc,
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state->creds, state->auth_type,
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auth_type,
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NULL);
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composite_continue(state->ctx, ctx, init_lsa_recv_auth_bind,
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state);
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break;
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}
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default:
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composite_error(state->ctx, NT_STATUS_INTERNAL_ERROR);
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}
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}
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static void init_lsa_recv_anon_bind(struct composite_context *ctx)
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{
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struct init_lsa_state *state =
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talloc_get_type(ctx->async.private_data,
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struct init_lsa_state);
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struct rpc_request *req;
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state->ctx->status = dcerpc_bind_auth_none_recv(ctx);
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if (!composite_is_ok(state->ctx)) return;
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state->handle = talloc(state, struct policy_handle);
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if (composite_nomem(state->handle, state->ctx)) return;
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state->openpolicy.in.system_name =
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talloc_asprintf(state, "\\\\%s",
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dcerpc_server_name(state->lsa_pipe));
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ZERO_STRUCT(state->objectattr);
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state->openpolicy.in.attr = &state->objectattr;
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state->openpolicy.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
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state->openpolicy.out.handle = state->handle;
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req = dcerpc_lsa_OpenPolicy2_send(state->lsa_pipe, state,
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&state->openpolicy);
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composite_continue_rpc(state->ctx, req, init_lsa_recv_openpol, state);
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}
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static void init_lsa_recv_auth_bind(struct composite_context *ctx)
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{
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struct init_lsa_state *state =
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talloc_get_type(ctx->async.private_data,
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struct init_lsa_state);
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struct rpc_request *req;
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state->ctx->status = dcerpc_bind_auth_recv(ctx);
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if (!composite_is_ok(state->ctx)) return;
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state->handle = talloc(state, struct policy_handle);
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if (composite_nomem(state->handle, state->ctx)) return;
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state->openpolicy.in.system_name =
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talloc_asprintf(state, "\\\\%s",
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dcerpc_server_name(state->lsa_pipe));
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ZERO_STRUCT(state->objectattr);
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state->openpolicy.in.attr = &state->objectattr;
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state->openpolicy.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
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state->openpolicy.out.handle = state->handle;
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req = dcerpc_lsa_OpenPolicy2_send(state->lsa_pipe, state,
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&state->openpolicy);
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composite_continue_rpc(state->ctx, req, init_lsa_recv_openpol, state);
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}
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static void init_lsa_recv_openpol(struct rpc_request *req)
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{
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struct init_lsa_state *state =
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talloc_get_type(req->async.private,
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struct init_lsa_state);
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state->ctx->status = dcerpc_ndr_request_recv(req);
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if (!composite_is_ok(state->ctx)) return;
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state->ctx->status = state->openpolicy.out.result;
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if (!composite_is_ok(state->ctx)) return;
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composite_done(state->ctx);
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}
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NTSTATUS wb_init_lsa_recv(struct composite_context *c,
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TALLOC_CTX *mem_ctx,
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struct dcerpc_pipe **lsa_pipe,
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struct policy_handle **lsa_policy)
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{
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NTSTATUS status = composite_wait(c);
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if (NT_STATUS_IS_OK(status)) {
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struct init_lsa_state *state =
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talloc_get_type(c->private_data,
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struct init_lsa_state);
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*lsa_pipe = talloc_steal(mem_ctx, state->lsa_pipe);
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*lsa_policy = talloc_steal(mem_ctx, state->handle);
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}
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talloc_free(c);
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return status;
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}
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/*
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* Connect to LSA using the credentials, try NTLMSSP and SCHANNEL using the
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* given credentials. If both fail or no credentials are available, fall back
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* to an anonymous bind.
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*/
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struct connect_lsa_state {
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struct composite_context *ctx;
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struct smbcli_tree *tree;
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struct cli_credentials *credentials;
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uint8_t auth_type;
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struct dcerpc_pipe *lsa_pipe;
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struct policy_handle *lsa_policy;
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};
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static void connect_lsa_recv_ntlmssp(struct composite_context *ctx);
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static void connect_lsa_recv_schannel(struct composite_context *ctx);
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static void connect_lsa_recv_anon(struct composite_context *ctx);
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struct composite_context *wb_connect_lsa_send(TALLOC_CTX *mem_ctx,
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struct smbcli_tree *tree,
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struct cli_credentials *credentials)
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{
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struct composite_context *result, *ctx;
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struct connect_lsa_state *state;
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result = talloc(mem_ctx, struct composite_context);
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if (result == NULL) goto failed;
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result->state = COMPOSITE_STATE_IN_PROGRESS;
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result->async.fn = NULL;
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result->event_ctx = tree->session->transport->socket->event.ctx;
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state = talloc(result, struct connect_lsa_state);
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if (state == NULL) goto failed;
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state->ctx = result;
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result->private_data = state;
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state->tree = tree;
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state->credentials = credentials;
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if (credentials == NULL) {
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ctx = wb_init_lsa_send(state, tree, DCERPC_AUTH_TYPE_NONE,
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NULL);
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if (ctx == NULL) goto failed;
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ctx->async.fn = connect_lsa_recv_anon;
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ctx->async.private_data = state;
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return result;
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}
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ctx = wb_init_lsa_send(state, tree, DCERPC_AUTH_TYPE_NTLMSSP,
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credentials);
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if (ctx == NULL) goto failed;
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ctx->async.fn = connect_lsa_recv_ntlmssp;
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ctx->async.private_data = state;
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return result;
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failed:
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talloc_free(result);
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return NULL;
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}
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static void connect_lsa_recv_ntlmssp(struct composite_context *ctx)
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{
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struct connect_lsa_state *state =
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talloc_get_type(ctx->async.private_data,
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struct connect_lsa_state);
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state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe,
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&state->lsa_policy);
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if (NT_STATUS_IS_OK(state->ctx->status)) {
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state->auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
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composite_done(state->ctx);
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return;
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}
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ctx = wb_init_lsa_send(state, state->tree, DCERPC_AUTH_TYPE_SCHANNEL,
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state->credentials);
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composite_continue(state->ctx, ctx,
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connect_lsa_recv_schannel, state);
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}
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static void connect_lsa_recv_schannel(struct composite_context *ctx)
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{
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struct connect_lsa_state *state =
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talloc_get_type(ctx->async.private_data,
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struct connect_lsa_state);
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state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe,
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&state->lsa_policy);
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if (NT_STATUS_IS_OK(state->ctx->status)) {
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state->auth_type = DCERPC_AUTH_TYPE_SCHANNEL;
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composite_done(state->ctx);
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return;
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}
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ctx = wb_init_lsa_send(state, state->tree, DCERPC_AUTH_TYPE_NONE,
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state->credentials);
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composite_continue(state->ctx, ctx,
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connect_lsa_recv_anon, state);
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}
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static void connect_lsa_recv_anon(struct composite_context *ctx)
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{
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struct connect_lsa_state *state =
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talloc_get_type(ctx->async.private_data,
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struct connect_lsa_state);
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state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe,
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&state->lsa_policy);
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if (!composite_is_ok(state->ctx)) return;
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state->auth_type = DCERPC_AUTH_TYPE_NONE;
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composite_done(state->ctx);
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}
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NTSTATUS wb_connect_lsa_recv(struct composite_context *c,
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TALLOC_CTX *mem_ctx,
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uint8_t *auth_type,
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struct dcerpc_pipe **lsa_pipe,
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struct policy_handle **lsa_policy)
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{
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NTSTATUS status = composite_wait(c);
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if (NT_STATUS_IS_OK(status)) {
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struct connect_lsa_state *state =
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talloc_get_type(c->private_data,
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struct connect_lsa_state);
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*auth_type = state->auth_type;
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*lsa_pipe = talloc_steal(mem_ctx, state->lsa_pipe);
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*lsa_policy = talloc_steal(mem_ctx, state->lsa_policy);
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}
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talloc_free(c);
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return status;
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}
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NTSTATUS wb_connect_lsa(TALLOC_CTX *mem_ctx,
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struct smbcli_tree *tree,
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struct cli_credentials *credentials,
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uint8_t *auth_type,
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struct dcerpc_pipe **lsa_pipe,
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struct policy_handle **lsa_policy)
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{
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struct composite_context *c;
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c = wb_connect_lsa_send(mem_ctx, tree, credentials);
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return wb_connect_lsa_recv(c, mem_ctx, auth_type, lsa_pipe,
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lsa_policy);
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}
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