diff options
Diffstat (limited to 'source3/rpc_client')
| -rw-r--r-- | source3/rpc_client/cli_pipe.c | 447 |
1 files changed, 447 insertions, 0 deletions
diff --git a/source3/rpc_client/cli_pipe.c b/source3/rpc_client/cli_pipe.c index c32124f678..63d3689620 100644 --- a/source3/rpc_client/cli_pipe.c +++ b/source3/rpc_client/cli_pipe.c @@ -1585,6 +1585,7 @@ static NTSTATUS rpc_api_pipe_recv(struct async_req *req, TALLOC_CTX *mem_ctx, return NT_STATUS_OK; } +#if 0 static NTSTATUS rpc_api_pipe(TALLOC_CTX *mem_ctx, struct rpc_pipe_client *cli, prs_struct *data, /* Outgoing pdu fragment, * already formatted for @@ -1617,6 +1618,7 @@ static NTSTATUS rpc_api_pipe(TALLOC_CTX *mem_ctx, struct rpc_pipe_client *cli, TALLOC_FREE(frame); return status; } +#endif /******************************************************************* Creates krb5 auth bind. @@ -2613,6 +2615,7 @@ static NTSTATUS create_rpc_bind_auth3(struct rpc_pipe_client *cli, Create and send the third packet in an RPC auth. ****************************************************************************/ +#if 0 static NTSTATUS rpc_finish_auth3_bind(struct rpc_pipe_client *cli, RPC_HDR *phdr, prs_struct *rbuf, @@ -2709,6 +2712,7 @@ static NTSTATUS rpc_finish_auth3_bind(struct rpc_pipe_client *cli, data_blob_free(&server_response); return NT_STATUS_OK; } +#endif /******************************************************************* Creates a DCE/RPC bind alter context authentication request which @@ -2756,6 +2760,7 @@ static NTSTATUS create_rpc_alter_context(uint32 rpc_call_id, and gets a response. ********************************************************************/ +#if 0 static NTSTATUS rpc_finish_spnego_ntlmssp_bind(struct rpc_pipe_client *cli, RPC_HDR *phdr, prs_struct *rbuf, @@ -2879,11 +2884,13 @@ static NTSTATUS rpc_finish_spnego_ntlmssp_bind(struct rpc_pipe_client *cli, return NT_STATUS_OK; } +#endif /**************************************************************************** Do an rpc bind. ****************************************************************************/ +#if 0 NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli, struct cli_pipe_auth_data *auth) { @@ -3013,6 +3020,446 @@ NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli, prs_mem_free(&rbuf); return NT_STATUS_OK; } +#endif + +struct rpc_pipe_bind_state { + struct event_context *ev; + struct rpc_pipe_client *cli; + prs_struct rpc_out; + uint32_t rpc_call_id; +}; + +static int rpc_pipe_bind_state_destructor(struct rpc_pipe_bind_state *state) +{ + prs_mem_free(&state->rpc_out); + return 0; +} + +static void rpc_pipe_bind_step_one_done(struct async_req *subreq); +static NTSTATUS rpc_finish_auth3_bind_send(struct async_req *req, + struct rpc_pipe_bind_state *state, + struct rpc_hdr_info *phdr, + prs_struct *reply_pdu); +static void rpc_bind_auth3_write_done(struct async_req *subreq); +static NTSTATUS rpc_finish_spnego_ntlmssp_bind_send(struct async_req *req, + struct rpc_pipe_bind_state *state, + struct rpc_hdr_info *phdr, + prs_struct *reply_pdu); +static void rpc_bind_ntlmssp_api_done(struct async_req *subreq); + +struct async_req *rpc_pipe_bind_send(TALLOC_CTX *mem_ctx, + struct event_context *ev, + struct rpc_pipe_client *cli, + struct cli_pipe_auth_data *auth) +{ + struct async_req *result, *subreq; + struct rpc_pipe_bind_state *state; + NTSTATUS status; + + result = async_req_new(mem_ctx); + if (result == NULL) { + return NULL; + } + state = talloc(result, struct rpc_pipe_bind_state); + if (state == NULL) { + goto fail; + } + result->private_data = state; + + DEBUG(5,("Bind RPC Pipe: %s auth_type %u, auth_level %u\n", + rpccli_pipe_txt(debug_ctx(), cli), + (unsigned int)auth->auth_type, + (unsigned int)auth->auth_level )); + + state->ev = ev; + state->cli = cli; + state->rpc_call_id = get_rpc_call_id(); + + prs_init_empty(&state->rpc_out, state, MARSHALL); + talloc_set_destructor(state, rpc_pipe_bind_state_destructor); + + cli->auth = talloc_move(cli, &auth); + + /* Marshall the outgoing data. */ + status = create_rpc_bind_req(cli, &state->rpc_out, + state->rpc_call_id, + &cli->abstract_syntax, + &cli->transfer_syntax, + cli->auth->auth_type, + cli->auth->auth_level); + + if (!NT_STATUS_IS_OK(status)) { + goto post_status; + } + + subreq = rpc_api_pipe_send(state, ev, cli, &state->rpc_out, + RPC_BINDACK); + if (subreq == NULL) { + status = NT_STATUS_NO_MEMORY; + goto post_status; + } + subreq->async.fn = rpc_pipe_bind_step_one_done; + subreq->async.priv = result; + return result; + + post_status: + if (async_post_status(result, ev, status)) { + return result; + } + fail: + TALLOC_FREE(result); + return NULL; +} + +static void rpc_pipe_bind_step_one_done(struct async_req *subreq) +{ + struct async_req *req = talloc_get_type_abort( + subreq->async.priv, struct async_req); + struct rpc_pipe_bind_state *state = talloc_get_type_abort( + req->private_data, struct rpc_pipe_bind_state); + prs_struct reply_pdu; + struct rpc_hdr_info hdr; + struct rpc_hdr_ba_info hdr_ba; + NTSTATUS status; + + status = rpc_api_pipe_recv(subreq, talloc_tos(), &reply_pdu); + TALLOC_FREE(subreq); + if (!NT_STATUS_IS_OK(status)) { + DEBUG(3, ("rpc_pipe_bind: %s bind request returned %s\n", + rpccli_pipe_txt(debug_ctx(), state->cli), + nt_errstr(status))); + async_req_error(req, status); + return; + } + + /* Unmarshall the RPC header */ + if (!smb_io_rpc_hdr("hdr", &hdr, &reply_pdu, 0)) { + DEBUG(0, ("rpc_pipe_bind: failed to unmarshall RPC_HDR.\n")); + async_req_error(req, NT_STATUS_BUFFER_TOO_SMALL); + return; + } + + if (!smb_io_rpc_hdr_ba("", &hdr_ba, &reply_pdu, 0)) { + DEBUG(0, ("rpc_pipe_bind: Failed to unmarshall " + "RPC_HDR_BA.\n")); + async_req_error(req, NT_STATUS_BUFFER_TOO_SMALL); + return; + } + + if (!check_bind_response(&hdr_ba, &state->cli->transfer_syntax)) { + DEBUG(2, ("rpc_pipe_bind: check_bind_response failed.\n")); + async_req_error(req, NT_STATUS_BUFFER_TOO_SMALL); + return; + } + + state->cli->max_xmit_frag = hdr_ba.bba.max_tsize; + state->cli->max_recv_frag = hdr_ba.bba.max_rsize; + + /* + * For authenticated binds we may need to do 3 or 4 leg binds. + */ + + switch(state->cli->auth->auth_type) { + + case PIPE_AUTH_TYPE_NONE: + case PIPE_AUTH_TYPE_SCHANNEL: + /* Bind complete. */ + async_req_done(req); + break; + + case PIPE_AUTH_TYPE_NTLMSSP: + /* Need to send AUTH3 packet - no reply. */ + status = rpc_finish_auth3_bind_send(req, state, &hdr, + &reply_pdu); + if (!NT_STATUS_IS_OK(status)) { + async_req_error(req, status); + } + break; + + case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP: + /* Need to send alter context request and reply. */ + status = rpc_finish_spnego_ntlmssp_bind_send(req, state, &hdr, + &reply_pdu); + if (!NT_STATUS_IS_OK(status)) { + async_req_error(req, status); + } + break; + + case PIPE_AUTH_TYPE_KRB5: + /* */ + + default: + DEBUG(0,("cli_finish_bind_auth: unknown auth type %u\n", + (unsigned int)state->cli->auth->auth_type)); + async_req_error(req, NT_STATUS_INTERNAL_ERROR); + } +} + +static NTSTATUS rpc_finish_auth3_bind_send(struct async_req *req, + struct rpc_pipe_bind_state *state, + struct rpc_hdr_info *phdr, + prs_struct *reply_pdu) +{ + DATA_BLOB server_response = data_blob_null; + DATA_BLOB client_reply = data_blob_null; + struct rpc_hdr_auth_info hdr_auth; + struct async_req *subreq; + NTSTATUS status; + + if ((phdr->auth_len == 0) + || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) { + return NT_STATUS_INVALID_PARAMETER; + } + + if (!prs_set_offset( + reply_pdu, + phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) { + return NT_STATUS_INVALID_PARAMETER; + } + + if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, reply_pdu, 0)) { + return NT_STATUS_INVALID_PARAMETER; + } + + /* TODO - check auth_type/auth_level match. */ + + server_response = data_blob_talloc(talloc_tos(), NULL, phdr->auth_len); + prs_copy_data_out((char *)server_response.data, reply_pdu, + phdr->auth_len); + + status = ntlmssp_update(state->cli->auth->a_u.ntlmssp_state, + server_response, &client_reply); + + if (!NT_STATUS_IS_OK(status)) { + DEBUG(0, ("rpc_finish_auth3_bind: NTLMSSP update using server " + "blob failed: %s.\n", nt_errstr(status))); + return status; + } + + prs_init_empty(&state->rpc_out, talloc_tos(), MARSHALL); + + status = create_rpc_bind_auth3(state->cli, state->rpc_call_id, + state->cli->auth->auth_type, + state->cli->auth->auth_level, + &client_reply, &state->rpc_out); + data_blob_free(&client_reply); + + if (!NT_STATUS_IS_OK(status)) { + return status; + } + + subreq = rpc_write_send(state, state->ev, state->cli, + prs_data_p(&state->rpc_out), + prs_offset(&state->rpc_out)); + if (subreq == NULL) { + return NT_STATUS_NO_MEMORY; + } + subreq->async.fn = rpc_bind_auth3_write_done; + subreq->async.priv = req; + return NT_STATUS_OK; +} + +static void rpc_bind_auth3_write_done(struct async_req *subreq) +{ + struct async_req *req = talloc_get_type_abort( + subreq->async.priv, struct async_req); + NTSTATUS status; + + status = rpc_write_recv(subreq); + TALLOC_FREE(subreq); + if (!NT_STATUS_IS_OK(status)) { + async_req_error(req, status); + return; + } + async_req_done(req); +} + +static NTSTATUS rpc_finish_spnego_ntlmssp_bind_send(struct async_req *req, + struct rpc_pipe_bind_state *state, + struct rpc_hdr_info *phdr, + prs_struct *reply_pdu) +{ + DATA_BLOB server_spnego_response = data_blob_null; + DATA_BLOB server_ntlm_response = data_blob_null; + DATA_BLOB client_reply = data_blob_null; + DATA_BLOB tmp_blob = data_blob_null; + RPC_HDR_AUTH hdr_auth; + struct async_req *subreq; + NTSTATUS status; + + if ((phdr->auth_len == 0) + || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) { + return NT_STATUS_INVALID_PARAMETER; + } + + /* Process the returned NTLMSSP blob first. */ + if (!prs_set_offset( + reply_pdu, + phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) { + return NT_STATUS_INVALID_PARAMETER; + } + + if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, reply_pdu, 0)) { + return NT_STATUS_INVALID_PARAMETER; + } + + server_spnego_response = data_blob(NULL, phdr->auth_len); + prs_copy_data_out((char *)server_spnego_response.data, + reply_pdu, phdr->auth_len); + + /* + * The server might give us back two challenges - tmp_blob is for the + * second. + */ + if (!spnego_parse_challenge(server_spnego_response, + &server_ntlm_response, &tmp_blob)) { + data_blob_free(&server_spnego_response); + data_blob_free(&server_ntlm_response); + data_blob_free(&tmp_blob); + return NT_STATUS_INVALID_PARAMETER; + } + + /* We're finished with the server spnego response and the tmp_blob. */ + data_blob_free(&server_spnego_response); + data_blob_free(&tmp_blob); + + status = ntlmssp_update(state->cli->auth->a_u.ntlmssp_state, + server_ntlm_response, &client_reply); + + /* Finished with the server_ntlm response */ + data_blob_free(&server_ntlm_response); + + if (!NT_STATUS_IS_OK(status)) { + DEBUG(0, ("rpc_finish_spnego_ntlmssp_bind: NTLMSSP update " + "using server blob failed.\n")); + data_blob_free(&client_reply); + return status; + } + + /* SPNEGO wrap the client reply. */ + tmp_blob = spnego_gen_auth(client_reply); + data_blob_free(&client_reply); + client_reply = tmp_blob; + tmp_blob = data_blob_null; + + /* Now prepare the alter context pdu. */ + prs_init_empty(&state->rpc_out, state, MARSHALL); + + status = create_rpc_alter_context(state->rpc_call_id, + &state->cli->abstract_syntax, + &state->cli->transfer_syntax, + state->cli->auth->auth_level, + &client_reply, + &state->rpc_out); + data_blob_free(&client_reply); + + if (!NT_STATUS_IS_OK(status)) { + return status; + } + + subreq = rpc_api_pipe_send(state, state->ev, state->cli, + &state->rpc_out, RPC_ALTCONTRESP); + if (subreq == NULL) { + return NT_STATUS_NO_MEMORY; + } + subreq->async.fn = rpc_bind_ntlmssp_api_done; + subreq->async.priv = req; + return NT_STATUS_OK; +} + +static void rpc_bind_ntlmssp_api_done(struct async_req *subreq) +{ + struct async_req *req = talloc_get_type_abort( + subreq->async.priv, struct async_req); + struct rpc_pipe_bind_state *state = talloc_get_type_abort( + req->private_data, struct rpc_pipe_bind_state); + DATA_BLOB server_spnego_response = data_blob_null; + DATA_BLOB tmp_blob = data_blob_null; + prs_struct reply_pdu; + struct rpc_hdr_info hdr; + struct rpc_hdr_auth_info hdr_auth; + NTSTATUS status; + + status = rpc_api_pipe_recv(subreq, talloc_tos(), &reply_pdu); + TALLOC_FREE(subreq); + if (!NT_STATUS_IS_OK(status)) { + async_req_error(req, status); + return; + } + + /* Get the auth blob from the reply. */ + if (!smb_io_rpc_hdr("rpc_hdr ", &hdr, &reply_pdu, 0)) { + DEBUG(0, ("rpc_finish_spnego_ntlmssp_bind: Failed to " + "unmarshall RPC_HDR.\n")); + async_req_error(req, NT_STATUS_BUFFER_TOO_SMALL); + return; + } + + if (!prs_set_offset( + &reply_pdu, + hdr.frag_len - hdr.auth_len - RPC_HDR_AUTH_LEN)) { + async_req_error(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, &reply_pdu, 0)) { + async_req_error(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + server_spnego_response = data_blob(NULL, hdr.auth_len); + prs_copy_data_out((char *)server_spnego_response.data, &reply_pdu, + hdr.auth_len); + + /* Check we got a valid auth response. */ + if (!spnego_parse_auth_response(server_spnego_response, NT_STATUS_OK, + OID_NTLMSSP, &tmp_blob)) { + data_blob_free(&server_spnego_response); + data_blob_free(&tmp_blob); + async_req_error(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + data_blob_free(&server_spnego_response); + data_blob_free(&tmp_blob); + + DEBUG(5,("rpc_finish_spnego_ntlmssp_bind: alter context request to " + "%s.\n", rpccli_pipe_txt(debug_ctx(), state->cli))); + async_req_done(req); +} + +NTSTATUS rpc_pipe_bind_recv(struct async_req *req) +{ + return async_req_simple_recv(req); +} + +NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli, + struct cli_pipe_auth_data *auth) +{ + TALLOC_CTX *frame = talloc_stackframe(); + struct event_context *ev; + struct async_req *req; + NTSTATUS status = NT_STATUS_NO_MEMORY; + + ev = event_context_init(frame); + if (ev == NULL) { + goto fail; + } + + req = rpc_pipe_bind_send(frame, ev, cli, auth); + if (req == NULL) { + goto fail; + } + + while (req->state < ASYNC_REQ_DONE) { + event_loop_once(ev); + } + + status = rpc_pipe_bind_recv(req); + fail: + TALLOC_FREE(frame); + return status; +} unsigned int rpccli_set_timeout(struct rpc_pipe_client *cli, unsigned int timeout) |