--- /dev/null
+/*
+ * Unix SMB/CIFS implementation.
+ * RPC Pipe client / server routines
+ * Largely rewritten by Jeremy Allison 2005.
+ *
+ * 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.
+ */
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_RPC_CLI
+
+extern struct pipe_id_info pipe_names[];
+
+/********************************************************************
+ Map internal value to wire value.
+ ********************************************************************/
+
+static int map_pipe_auth_type_to_rpc_auth_type(enum pipe_auth_type auth_type)
+{
+ switch (auth_type) {
+
+ case PIPE_AUTH_TYPE_NONE:
+ return RPC_ANONYMOUS_AUTH_TYPE;
+
+ case PIPE_AUTH_TYPE_NTLMSSP:
+ return RPC_NTLMSSP_AUTH_TYPE;
+
+ case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
+ case PIPE_AUTH_TYPE_SPNEGO_KRB5:
+ return RPC_SPNEGO_AUTH_TYPE;
+
+ case PIPE_AUTH_TYPE_SCHANNEL:
+ return RPC_SCHANNEL_AUTH_TYPE;
+
+ case PIPE_AUTH_TYPE_KRB5:
+ return RPC_KRB5_AUTH_TYPE;
+
+ default:
+ DEBUG(0,("map_pipe_auth_type_to_rpc_type: unknown pipe "
+ "auth type %u\n",
+ (unsigned int)auth_type ));
+ break;
+ }
+ return -1;
+}
+
+/********************************************************************
+ Rpc pipe call id.
+ ********************************************************************/
+
+static uint32 get_rpc_call_id(void)
+{
+ static uint32 call_id = 0;
+ return ++call_id;
+}
+
+/*******************************************************************
+ Use SMBreadX to get rest of one fragment's worth of rpc data.
+ Will expand the current_pdu struct to the correct size.
+ ********************************************************************/
+
+static NTSTATUS rpc_read(struct rpc_pipe_client *cli,
+ prs_struct *current_pdu,
+ uint32 data_to_read,
+ uint32 *current_pdu_offset)
+{
+ size_t size = (size_t)cli->max_recv_frag;
+ uint32 stream_offset = 0;
+ ssize_t num_read;
+ char *pdata;
+ ssize_t extra_data_size = ((ssize_t)*current_pdu_offset) + ((ssize_t)data_to_read) - (ssize_t)prs_data_size(current_pdu);
+
+ DEBUG(5,("rpc_read: data_to_read: %u current_pdu offset: %u extra_data_size: %d\n",
+ (unsigned int)data_to_read, (unsigned int)*current_pdu_offset, (int)extra_data_size ));
+
+ /*
+ * Grow the buffer if needed to accommodate the data to be read.
+ */
+
+ if (extra_data_size > 0) {
+ if(!prs_force_grow(current_pdu, (uint32)extra_data_size)) {
+ DEBUG(0,("rpc_read: Failed to grow parse struct by %d bytes.\n", (int)extra_data_size ));
+ return NT_STATUS_NO_MEMORY;
+ }
+ DEBUG(5,("rpc_read: grew buffer by %d bytes to %u\n", (int)extra_data_size, prs_data_size(current_pdu) ));
+ }
+
+ pdata = prs_data_p(current_pdu) + *current_pdu_offset;
+
+ do {
+ /* read data using SMBreadX */
+ if (size > (size_t)data_to_read) {
+ size = (size_t)data_to_read;
+ }
+
+ num_read = cli_read(cli->cli, cli->fnum, pdata,
+ (off_t)stream_offset, size);
+
+ DEBUG(5,("rpc_read: num_read = %d, read offset: %u, to read: %u\n",
+ (int)num_read, (unsigned int)stream_offset, (unsigned int)data_to_read));
+
+ /*
+ * A dos error of ERRDOS/ERRmoredata is not an error.
+ */
+ if (cli_is_dos_error(cli->cli)) {
+ uint32 ecode;
+ uint8 eclass;
+ cli_dos_error(cli->cli, &eclass, &ecode);
+ if (eclass != ERRDOS && ecode != ERRmoredata) {
+ DEBUG(0,("rpc_read: DOS Error %d/%u (%s) in cli_read on pipe %s\n",
+ eclass, (unsigned int)ecode,
+ cli_errstr(cli->cli),
+ cli->pipe_name ));
+ return dos_to_ntstatus(eclass, ecode);
+ }
+ }
+
+ /*
+ * Likewise for NT_STATUS_BUFFER_TOO_SMALL
+ */
+ if (cli_is_nt_error(cli->cli)) {
+ if (!NT_STATUS_EQUAL(cli_nt_error(cli->cli), NT_STATUS_BUFFER_TOO_SMALL)) {
+ DEBUG(0,("rpc_read: Error (%s) in cli_read on pipe %s\n",
+ nt_errstr(cli_nt_error(cli->cli)),
+ cli->pipe_name ));
+ return cli_nt_error(cli->cli);
+ }
+ }
+
+ if (num_read == -1) {
+ DEBUG(0,("rpc_read: Error - cli_read on pipe %s returned -1\n",
+ cli->pipe_name ));
+ return cli_get_nt_error(cli->cli);
+ }
+
+ data_to_read -= num_read;
+ stream_offset += num_read;
+ pdata += num_read;
+
+ } while (num_read > 0 && data_to_read > 0);
+ /* && err == (0x80000000 | STATUS_BUFFER_OVERFLOW)); */
+
+ /*
+ * Update the current offset into current_pdu by the amount read.
+ */
+ *current_pdu_offset += stream_offset;
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Try and get a PDU's worth of data from current_pdu. If not, then read more
+ from the wire.
+ ****************************************************************************/
+
+static NTSTATUS cli_pipe_get_current_pdu(struct rpc_pipe_client *cli, RPC_HDR *prhdr, prs_struct *current_pdu)
+{
+ NTSTATUS ret = NT_STATUS_OK;
+ uint32 current_pdu_len = prs_data_size(current_pdu);
+
+ /* Ensure we have at least RPC_HEADER_LEN worth of data to parse. */
+ if (current_pdu_len < RPC_HEADER_LEN) {
+ /* rpc_read expands the current_pdu struct as neccessary. */
+ ret = rpc_read(cli, current_pdu, RPC_HEADER_LEN - current_pdu_len, ¤t_pdu_len);
+ if (!NT_STATUS_IS_OK(ret)) {
+ return ret;
+ }
+ }
+
+ /* This next call sets the endian bit correctly in current_pdu. */
+ /* We will propagate this to rbuf later. */
+ if(!smb_io_rpc_hdr("rpc_hdr ", prhdr, current_pdu, 0)) {
+ DEBUG(0,("cli_pipe_get_current_pdu: Failed to unmarshall RPC_HDR.\n"));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ /* Ensure we have frag_len bytes of data. */
+ if (current_pdu_len < prhdr->frag_len) {
+ /* rpc_read expands the current_pdu struct as neccessary. */
+ ret = rpc_read(cli, current_pdu, (uint32)prhdr->frag_len - current_pdu_len, ¤t_pdu_len);
+ if (!NT_STATUS_IS_OK(ret)) {
+ return ret;
+ }
+ }
+
+ if (current_pdu_len < prhdr->frag_len) {
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ NTLMSSP specific sign/seal.
+ Virtually identical to rpc_server/srv_pipe.c:api_pipe_ntlmssp_auth_process.
+ In fact I should probably abstract these into identical pieces of code... JRA.
+ ****************************************************************************/
+
+static NTSTATUS cli_pipe_verify_ntlmssp(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
+ prs_struct *current_pdu,
+ uint8 *p_ss_padding_len)
+{
+ RPC_HDR_AUTH auth_info;
+ uint32 save_offset = prs_offset(current_pdu);
+ uint32 auth_len = prhdr->auth_len;
+ NTLMSSP_STATE *ntlmssp_state = cli->auth.a_u.ntlmssp_state;
+ unsigned char *data = NULL;
+ size_t data_len;
+ unsigned char *full_packet_data = NULL;
+ size_t full_packet_data_len;
+ DATA_BLOB auth_blob;
+ NTSTATUS status;
+
+ if (cli->auth.auth_level == PIPE_AUTH_LEVEL_NONE || cli->auth.auth_level == PIPE_AUTH_LEVEL_CONNECT) {
+ return NT_STATUS_OK;
+ }
+
+ if (!ntlmssp_state) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* Ensure there's enough data for an authenticated response. */
+ if ((auth_len > RPC_MAX_SIGN_SIZE) ||
+ (RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_AUTH_LEN + auth_len > prhdr->frag_len)) {
+ DEBUG(0,("cli_pipe_verify_ntlmssp: auth_len %u is too large.\n",
+ (unsigned int)auth_len ));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ /*
+ * We need the full packet data + length (minus auth stuff) as well as the packet data + length
+ * after the RPC header.
+ * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
+ * functions as NTLMv2 checks the rpc headers also.
+ */
+
+ data = (unsigned char *)(prs_data_p(current_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN);
+ data_len = (size_t)(prhdr->frag_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - auth_len);
+
+ full_packet_data = (unsigned char *)prs_data_p(current_pdu);
+ full_packet_data_len = prhdr->frag_len - auth_len;
+
+ /* Pull the auth header and the following data into a blob. */
+ if(!prs_set_offset(current_pdu, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len)) {
+ DEBUG(0,("cli_pipe_verify_ntlmssp: cannot move offset to %u.\n",
+ (unsigned int)RPC_HEADER_LEN + (unsigned int)RPC_HDR_RESP_LEN + (unsigned int)data_len ));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, current_pdu, 0)) {
+ DEBUG(0,("cli_pipe_verify_ntlmssp: failed to unmarshall RPC_HDR_AUTH.\n"));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ auth_blob.data = (unsigned char *)prs_data_p(current_pdu) + prs_offset(current_pdu);
+ auth_blob.length = auth_len;
+
+ switch (cli->auth.auth_level) {
+ case PIPE_AUTH_LEVEL_PRIVACY:
+ /* Data is encrypted. */
+ status = ntlmssp_unseal_packet(ntlmssp_state,
+ data, data_len,
+ full_packet_data,
+ full_packet_data_len,
+ &auth_blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("cli_pipe_verify_ntlmssp: failed to unseal "
+ "packet from remote machine %s on pipe %s "
+ "fnum 0x%x. Error was %s.\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum,
+ nt_errstr(status) ));
+ return status;
+ }
+ break;
+ case PIPE_AUTH_LEVEL_INTEGRITY:
+ /* Data is signed. */
+ status = ntlmssp_check_packet(ntlmssp_state,
+ data, data_len,
+ full_packet_data,
+ full_packet_data_len,
+ &auth_blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("cli_pipe_verify_ntlmssp: check signing failed on "
+ "packet from remote machine %s on pipe %s "
+ "fnum 0x%x. Error was %s.\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum,
+ nt_errstr(status) ));
+ return status;
+ }
+ break;
+ default:
+ DEBUG(0,("cli_pipe_verify_ntlmssp: unknown internal auth level %d\n",
+ cli->auth.auth_level ));
+ return NT_STATUS_INVALID_INFO_CLASS;
+ }
+
+ /*
+ * Return the current pointer to the data offset.
+ */
+
+ if(!prs_set_offset(current_pdu, save_offset)) {
+ DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
+ (unsigned int)save_offset ));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ /*
+ * Remember the padding length. We must remove it from the real data
+ * stream once the sign/seal is done.
+ */
+
+ *p_ss_padding_len = auth_info.auth_pad_len;
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ schannel specific sign/seal.
+ ****************************************************************************/
+
+static NTSTATUS cli_pipe_verify_schannel(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
+ prs_struct *current_pdu,
+ uint8 *p_ss_padding_len)
+{
+ RPC_HDR_AUTH auth_info;
+ RPC_AUTH_SCHANNEL_CHK schannel_chk;
+ uint32 auth_len = prhdr->auth_len;
+ uint32 save_offset = prs_offset(current_pdu);
+ struct schannel_auth_struct *schannel_auth = cli->auth.a_u.schannel_auth;
+ uint32 data_len;
+
+ if (cli->auth.auth_level == PIPE_AUTH_LEVEL_NONE || cli->auth.auth_level == PIPE_AUTH_LEVEL_CONNECT) {
+ return NT_STATUS_OK;
+ }
+
+ if (auth_len != RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN) {
+ DEBUG(0,("cli_pipe_verify_schannel: auth_len %u.\n", (unsigned int)auth_len ));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (!schannel_auth) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* Ensure there's enough data for an authenticated response. */
+ if ((auth_len > RPC_MAX_SIGN_SIZE) ||
+ (RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_AUTH_LEN + auth_len > prhdr->frag_len)) {
+ DEBUG(0,("cli_pipe_verify_schannel: auth_len %u is too large.\n",
+ (unsigned int)auth_len ));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ data_len = prhdr->frag_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - auth_len;
+
+ if(!prs_set_offset(current_pdu, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len)) {
+ DEBUG(0,("cli_pipe_verify_schannel: cannot move offset to %u.\n",
+ (unsigned int)RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len ));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, current_pdu, 0)) {
+ DEBUG(0,("cli_pipe_verify_schannel: failed to unmarshall RPC_HDR_AUTH.\n"));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ if (auth_info.auth_type != RPC_SCHANNEL_AUTH_TYPE) {
+ DEBUG(0,("cli_pipe_verify_schannel: Invalid auth info %d on schannel\n",
+ auth_info.auth_type));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
+ &schannel_chk, current_pdu, 0)) {
+ DEBUG(0,("cli_pipe_verify_schannel: failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ if (!schannel_decode(schannel_auth,
+ cli->auth.auth_level,
+ SENDER_IS_ACCEPTOR,
+ &schannel_chk,
+ prs_data_p(current_pdu)+RPC_HEADER_LEN+RPC_HDR_RESP_LEN,
+ data_len)) {
+ DEBUG(3,("cli_pipe_verify_schannel: failed to decode PDU "
+ "Connection to remote machine %s "
+ "pipe %s fnum 0x%x.\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum ));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* The sequence number gets incremented on both send and receive. */
+ schannel_auth->seq_num++;
+
+ /*
+ * Return the current pointer to the data offset.
+ */
+
+ if(!prs_set_offset(current_pdu, save_offset)) {
+ DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
+ (unsigned int)save_offset ));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ /*
+ * Remember the padding length. We must remove it from the real data
+ * stream once the sign/seal is done.
+ */
+
+ *p_ss_padding_len = auth_info.auth_pad_len;
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Do the authentication checks on an incoming pdu. Check sign and unseal etc.
+ ****************************************************************************/
+
+static NTSTATUS cli_pipe_validate_rpc_response(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
+ prs_struct *current_pdu,
+ uint8 *p_ss_padding_len)
+{
+ NTSTATUS ret = NT_STATUS_OK;
+
+ /* Paranioa checks for auth_len. */
+ if (prhdr->auth_len) {
+ if (prhdr->auth_len > prhdr->frag_len) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (prhdr->auth_len + RPC_HDR_AUTH_LEN < prhdr->auth_len ||
+ prhdr->auth_len + RPC_HDR_AUTH_LEN < RPC_HDR_AUTH_LEN) {
+ /* Integer wrap attempt. */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ }
+
+ /*
+ * Now we have a complete RPC request PDU fragment, try and verify any auth data.
+ */
+
+ switch(cli->auth.auth_type) {
+ case PIPE_AUTH_TYPE_NONE:
+ if (prhdr->auth_len) {
+ DEBUG(3, ("cli_pipe_validate_rpc_response: Connection to remote machine %s "
+ "pipe %s fnum 0x%x - got non-zero auth len %u.\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum,
+ (unsigned int)prhdr->auth_len ));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ break;
+
+ case PIPE_AUTH_TYPE_NTLMSSP:
+ case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
+ ret = cli_pipe_verify_ntlmssp(cli, prhdr, current_pdu, p_ss_padding_len);
+ if (!NT_STATUS_IS_OK(ret)) {
+ return ret;
+ }
+ break;
+
+ case PIPE_AUTH_TYPE_SCHANNEL:
+ ret = cli_pipe_verify_schannel(cli, prhdr, current_pdu, p_ss_padding_len);
+ if (!NT_STATUS_IS_OK(ret)) {
+ return ret;
+ }
+ break;
+
+ case PIPE_AUTH_TYPE_KRB5:
+ case PIPE_AUTH_TYPE_SPNEGO_KRB5:
+ default:
+ DEBUG(3, ("cli_pipe_validate_rpc_response: Connection to remote machine %s "
+ "pipe %s fnum %x - unknown internal auth type %u.\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum,
+ cli->auth.auth_type ));
+ return NT_STATUS_INVALID_INFO_CLASS;
+ }
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Do basic authentication checks on an incoming pdu.
+ ****************************************************************************/
+
+static NTSTATUS cli_pipe_validate_current_pdu(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
+ prs_struct *current_pdu,
+ uint8 expected_pkt_type,
+ char **ppdata,
+ uint32 *pdata_len,
+ prs_struct *return_data)
+{
+
+ NTSTATUS ret = NT_STATUS_OK;
+ uint32 current_pdu_len = prs_data_size(current_pdu);
+
+ if (current_pdu_len != prhdr->frag_len) {
+ DEBUG(5,("cli_pipe_validate_current_pdu: incorrect pdu length %u, expected %u\n",
+ (unsigned int)current_pdu_len, (unsigned int)prhdr->frag_len ));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /*
+ * Point the return values at the real data including the RPC
+ * header. Just in case the caller wants it.
+ */
+ *ppdata = prs_data_p(current_pdu);
+ *pdata_len = current_pdu_len;
+
+ /* Ensure we have the correct type. */
+ switch (prhdr->pkt_type) {
+ case RPC_ALTCONTRESP:
+ case RPC_BINDACK:
+
+ /* Alter context and bind ack share the same packet definitions. */
+ break;
+
+
+ case RPC_RESPONSE:
+ {
+ RPC_HDR_RESP rhdr_resp;
+ uint8 ss_padding_len = 0;
+
+ if(!smb_io_rpc_hdr_resp("rpc_hdr_resp", &rhdr_resp, current_pdu, 0)) {
+ DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_RESP.\n"));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ /* Here's where we deal with incoming sign/seal. */
+ ret = cli_pipe_validate_rpc_response(cli, prhdr,
+ current_pdu, &ss_padding_len);
+ if (!NT_STATUS_IS_OK(ret)) {
+ return ret;
+ }
+
+ /* Point the return values at the NDR data. Remember to remove any ss padding. */
+ *ppdata = prs_data_p(current_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN;
+
+ if (current_pdu_len < RPC_HEADER_LEN + RPC_HDR_RESP_LEN + ss_padding_len) {
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ *pdata_len = current_pdu_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - ss_padding_len;
+
+ /* Remember to remove the auth footer. */
+ if (prhdr->auth_len) {
+ /* We've already done integer wrap tests on auth_len in
+ cli_pipe_validate_rpc_response(). */
+ if (*pdata_len < RPC_HDR_AUTH_LEN + prhdr->auth_len) {
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+ *pdata_len -= (RPC_HDR_AUTH_LEN + prhdr->auth_len);
+ }
+
+ DEBUG(10,("cli_pipe_validate_current_pdu: got pdu len %u, data_len %u, ss_len %u\n",
+ current_pdu_len, *pdata_len, ss_padding_len ));
+
+ /*
+ * If this is the first reply, and the allocation hint is reasonably, try and
+ * set up the return_data parse_struct to the correct size.
+ */
+
+ if ((prs_data_size(return_data) == 0) && rhdr_resp.alloc_hint && (rhdr_resp.alloc_hint < 15*1024*1024)) {
+ if (!prs_set_buffer_size(return_data, rhdr_resp.alloc_hint)) {
+ DEBUG(0,("cli_pipe_validate_current_pdu: reply alloc hint %u "
+ "too large to allocate\n",
+ (unsigned int)rhdr_resp.alloc_hint ));
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+
+ break;
+ }
+
+ case RPC_BINDNACK:
+ DEBUG(1, ("cli_pipe_validate_current_pdu: Bind NACK received from remote machine %s "
+ "pipe %s fnum 0x%x!\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum));
+ /* Use this for now... */
+ return NT_STATUS_NETWORK_ACCESS_DENIED;
+
+ case RPC_FAULT:
+ {
+ RPC_HDR_RESP rhdr_resp;
+ RPC_HDR_FAULT fault_resp;
+
+ if(!smb_io_rpc_hdr_resp("rpc_hdr_resp", &rhdr_resp, current_pdu, 0)) {
+ DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_RESP.\n"));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ if(!smb_io_rpc_hdr_fault("fault", &fault_resp, current_pdu, 0)) {
+ DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_FAULT.\n"));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ DEBUG(1, ("cli_pipe_validate_current_pdu: RPC fault code %s received from remote machine %s "
+ "pipe %s fnum 0x%x!\n",
+ nt_errstr(fault_resp.status),
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum));
+ if (NT_STATUS_IS_OK(fault_resp.status)) {
+ return NT_STATUS_UNSUCCESSFUL;
+ } else {
+ return fault_resp.status;
+ }
+
+ }
+
+ default:
+ DEBUG(0, ("cli_pipe_validate_current_pdu: unknown packet type %u received "
+ "from remote machine %s pipe %s fnum 0x%x!\n",
+ (unsigned int)prhdr->pkt_type,
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum));
+ return NT_STATUS_INVALID_INFO_CLASS;
+ }
+
+ if (prhdr->pkt_type != expected_pkt_type) {
+ DEBUG(3, ("cli_pipe_validate_current_pdu: Connection to remote machine %s "
+ "pipe %s fnum %x got an unexpected RPC packet "
+ "type - %u, not %u\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum,
+ prhdr->pkt_type,
+ expected_pkt_type));
+ return NT_STATUS_INVALID_INFO_CLASS;
+ }
+
+ /* Do this just before return - we don't want to modify any rpc header
+ data before now as we may have needed to do cryptographic actions on
+ it before. */
+
+ if ((prhdr->pkt_type == RPC_BINDACK) && !(prhdr->flags & RPC_FLG_LAST)) {
+ DEBUG(5,("cli_pipe_validate_current_pdu: bug in server (AS/U?), "
+ "setting fragment first/last ON.\n"));
+ prhdr->flags |= RPC_FLG_FIRST|RPC_FLG_LAST;
+ }
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Ensure we eat the just processed pdu from the current_pdu prs_struct.
+ Normally the frag_len and buffer size will match, but on the first trans
+ reply there is a theoretical chance that buffer size > frag_len, so we must
+ deal with that.
+ ****************************************************************************/
+
+static NTSTATUS cli_pipe_reset_current_pdu(struct rpc_pipe_client *cli, RPC_HDR *prhdr, prs_struct *current_pdu)
+{
+ uint32 current_pdu_len = prs_data_size(current_pdu);
+
+ if (current_pdu_len < prhdr->frag_len) {
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ /* Common case. */
+ if (current_pdu_len == (uint32)prhdr->frag_len) {
+ prs_mem_free(current_pdu);
+ prs_init(current_pdu, 0, prs_get_mem_context(current_pdu), UNMARSHALL);
+ /* Make current_pdu dynamic with no memory. */
+ prs_give_memory(current_pdu, 0, 0, True);
+ return NT_STATUS_OK;
+ }
+
+ /*
+ * Oh no ! More data in buffer than we processed in current pdu.
+ * Cheat. Move the data down and shrink the buffer.
+ */
+
+ memcpy(prs_data_p(current_pdu), prs_data_p(current_pdu) + prhdr->frag_len,
+ current_pdu_len - prhdr->frag_len);
+
+ /* Remember to set the read offset back to zero. */
+ prs_set_offset(current_pdu, 0);
+
+ /* Shrink the buffer. */
+ if (!prs_set_buffer_size(current_pdu, current_pdu_len - prhdr->frag_len)) {
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Send data on an rpc pipe via trans. The prs_struct data must be the last
+ pdu fragment of an NDR data stream.
+
+ Receive response data from an rpc pipe, which may be large...
+
+ Read the first fragment: unfortunately have to use SMBtrans for the first
+ bit, then SMBreadX for subsequent bits.
+
+ If first fragment received also wasn't the last fragment, continue
+ getting fragments until we _do_ receive the last fragment.
+
+ Request/Response PDU's look like the following...
+
+ |<------------------PDU len----------------------------------------------->|
+ |<-HDR_LEN-->|<--REQ LEN------>|.............|<-AUTH_HDRLEN->|<-AUTH_LEN-->|
+
+ +------------+-----------------+-------------+---------------+-------------+
+ | RPC HEADER | REQ/RESP HEADER | DATA ...... | AUTH_HDR | AUTH DATA |
+ +------------+-----------------+-------------+---------------+-------------+
+
+ Where the presence of the AUTH_HDR and AUTH DATA are dependent on the
+ signing & sealing being negotiated.
+
+ ****************************************************************************/
+
+static NTSTATUS rpc_api_pipe(struct rpc_pipe_client *cli,
+ prs_struct *data, /* Outgoing pdu fragment, already formatted for send. */
+ prs_struct *rbuf, /* Incoming reply - return as an NDR stream. */
+ uint8 expected_pkt_type)
+{
+ NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+ char *rparam = NULL;
+ uint32 rparam_len = 0;
+ uint16 setup[2];
+ char *pdata = data ? prs_data_p(data) : NULL;
+ uint32 data_len = data ? prs_offset(data) : 0;
+ char *prdata = NULL;
+ uint32 rdata_len = 0;
+ uint32 max_data = cli->max_xmit_frag ? cli->max_xmit_frag : RPC_MAX_PDU_FRAG_LEN;
+ uint32 current_rbuf_offset = 0;
+ prs_struct current_pdu;
+
+#ifdef DEVELOPER
+ /* Ensure we're not sending too much. */
+ SMB_ASSERT(data_len <= max_data);
+#endif
+
+ /* Set up the current pdu parse struct. */
+ prs_init(¤t_pdu, 0, prs_get_mem_context(rbuf), UNMARSHALL);
+
+ /* Create setup parameters - must be in native byte order. */
+ setup[0] = TRANSACT_DCERPCCMD;
+ setup[1] = cli->fnum; /* Pipe file handle. */
+
+ DEBUG(5,("rpc_api_pipe: Remote machine %s pipe %s fnum 0x%x\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum ));
+
+ /*
+ * Send the last (or only) fragment of an RPC request. For small
+ * amounts of data (about 1024 bytes or so) the RPC request and response
+ * appears in a SMBtrans request and response.
+ */
+
+ if (!cli_api_pipe(cli->cli, "\\PIPE\\",
+ setup, 2, 0, /* Setup, length, max */
+ NULL, 0, 0, /* Params, length, max */
+ pdata, data_len, max_data, /* data, length, max */
+ &rparam, &rparam_len, /* return params, len */
+ &prdata, &rdata_len)) /* return data, len */
+ {
+ DEBUG(0, ("rpc_api_pipe: Remote machine %s pipe %s fnum 0x%x"
+ "returned critical error. Error was %s\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum,
+ cli_errstr(cli->cli)));
+ ret = cli_get_nt_error(cli->cli);
+ SAFE_FREE(rparam);
+ SAFE_FREE(prdata);
+ goto err;
+ }
+
+ /* Throw away returned params - we know we won't use them. */
+
+ SAFE_FREE(rparam);
+
+ if (prdata == NULL) {
+ DEBUG(3,("rpc_api_pipe: Remote machine %s pipe %s "
+ "fnum 0x%x failed to return data.\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum));
+ /* Yes - some calls can truely return no data... */
+ prs_mem_free(¤t_pdu);
+ return NT_STATUS_OK;
+ }
+
+ /*
+ * Give this memory as dynamic to the current pdu.
+ */
+
+ prs_give_memory(¤t_pdu, prdata, rdata_len, True);
+
+ /* Ensure we can mess with the return prs_struct. */
+ SMB_ASSERT(UNMARSHALLING(rbuf));
+ SMB_ASSERT(prs_data_size(rbuf) == 0);
+
+ /* Make rbuf dynamic with no memory. */
+ prs_give_memory(rbuf, 0, 0, True);
+
+ while(1) {
+ RPC_HDR rhdr;
+ char *ret_data;
+ uint32 ret_data_len;
+
+ /* Ensure we have enough data for a pdu. */
+ ret = cli_pipe_get_current_pdu(cli, &rhdr, ¤t_pdu);
+ if (!NT_STATUS_IS_OK(ret)) {
+ goto err;
+ }
+
+ /* We pass in rbuf here so if the alloc hint is set correctly
+ we can set the output size and avoid reallocs. */
+
+ ret = cli_pipe_validate_current_pdu(cli, &rhdr, ¤t_pdu, expected_pkt_type,
+ &ret_data, &ret_data_len, rbuf);
+
+ DEBUG(10,("rpc_api_pipe: got PDU len of %u at offset %u\n",
+ prs_data_size(¤t_pdu), current_rbuf_offset ));
+
+ if (!NT_STATUS_IS_OK(ret)) {
+ goto err;
+ }
+
+ if ((rhdr.flags & RPC_FLG_FIRST)) {
+ if (rhdr.pack_type[0] == 0) {
+ /* Set the data type correctly for big-endian data on the first packet. */
+ DEBUG(10,("rpc_api_pipe: On machine %s pipe %s fnum 0x%x "
+ "PDU data format is big-endian.\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum));
+
+ prs_set_endian_data(rbuf, RPC_BIG_ENDIAN);
+ } else {
+ /* Check endianness on subsequent packets. */
+ if (current_pdu.bigendian_data != rbuf->bigendian_data) {
+ DEBUG(0,("rpc_api_pipe: Error : Endianness changed from %s to %s\n",
+ rbuf->bigendian_data ? "big" : "little",
+ current_pdu.bigendian_data ? "big" : "little" ));
+ ret = NT_STATUS_INVALID_PARAMETER;
+ goto err;
+ }
+ }
+ }
+
+ /* Now copy the data portion out of the pdu into rbuf. */
+ if (!prs_force_grow(rbuf, ret_data_len)) {
+ ret = NT_STATUS_NO_MEMORY;
+ goto err;
+ }
+ memcpy(prs_data_p(rbuf)+current_rbuf_offset, ret_data, (size_t)ret_data_len);
+ current_rbuf_offset += ret_data_len;
+
+ /* See if we've finished with all the data in current_pdu yet ? */
+ ret = cli_pipe_reset_current_pdu(cli, &rhdr, ¤t_pdu);
+ if (!NT_STATUS_IS_OK(ret)) {
+ goto err;
+ }
+
+ if (rhdr.flags & RPC_FLG_LAST) {
+ break; /* We're done. */
+ }
+ }
+
+ DEBUG(10,("rpc_api_pipe: Remote machine %s pipe %s fnum 0x%x returned %u bytes.\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum,
+ (unsigned int)prs_data_size(rbuf) ));
+
+ prs_mem_free(¤t_pdu);
+ return NT_STATUS_OK;
+
+ err:
+
+ prs_mem_free(¤t_pdu);
+ prs_mem_free(rbuf);
+ return ret;
+}
+
+/*******************************************************************
+ Creates krb5 auth bind.
+ ********************************************************************/
+
+static NTSTATUS create_krb5_auth_bind_req( struct rpc_pipe_client *cli,
+ enum pipe_auth_level auth_level,
+ RPC_HDR_AUTH *pauth_out,
+ prs_struct *auth_data)
+{
+#ifdef HAVE_KRB5
+ int ret;
+ struct kerberos_auth_struct *a = cli->auth.a_u.kerberos_auth;
+ DATA_BLOB tkt = data_blob(NULL, 0);
+ DATA_BLOB tkt_wrapped = data_blob(NULL, 0);
+
+ /* We may change the pad length before marshalling. */
+ init_rpc_hdr_auth(pauth_out, RPC_KRB5_AUTH_TYPE, (int)auth_level, 0, 1);
+
+ DEBUG(5, ("create_krb5_auth_bind_req: creating a service ticket for principal %s\n",
+ a->service_principal ));
+
+ /* Create the ticket for the service principal and return it in a gss-api wrapped blob. */
+
+ ret = cli_krb5_get_ticket(a->service_principal, 0, &tkt,
+ &a->session_key, (uint32)AP_OPTS_MUTUAL_REQUIRED);
+
+ if (ret) {
+ DEBUG(1,("create_krb5_auth_bind_req: cli_krb5_get_ticket for principal %s "
+ "failed with %s\n",
+ a->service_principal,
+ error_message(ret) ));
+
+ data_blob_free(&tkt);
+ prs_mem_free(auth_data);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* wrap that up in a nice GSS-API wrapping */
+ tkt_wrapped = spnego_gen_krb5_wrap(tkt, TOK_ID_KRB_AP_REQ);
+
+ data_blob_free(&tkt);
+
+ /* Auth len in the rpc header doesn't include auth_header. */
+ if (!prs_copy_data_in(auth_data, (char *)tkt_wrapped.data, tkt_wrapped.length)) {
+ data_blob_free(&tkt_wrapped);
+ prs_mem_free(auth_data);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ DEBUG(5, ("create_krb5_auth_bind_req: Created krb5 GSS blob :\n"));
+ dump_data(5, (const char *)tkt_wrapped.data, tkt_wrapped.length);
+
+ data_blob_free(&tkt_wrapped);
+ return NT_STATUS_OK;
+#else
+ return NT_STATUS_INVALID_PARAMETER;
+#endif
+}
+
+/*******************************************************************
+ Creates SPNEGO NTLMSSP auth bind.
+ ********************************************************************/
+
+static NTSTATUS create_spnego_ntlmssp_auth_rpc_bind_req( struct rpc_pipe_client *cli,
+ enum pipe_auth_level auth_level,
+ RPC_HDR_AUTH *pauth_out,
+ prs_struct *auth_data)
+{
+ NTSTATUS nt_status;
+ DATA_BLOB null_blob = data_blob(NULL, 0);
+ DATA_BLOB request = data_blob(NULL, 0);
+ DATA_BLOB spnego_msg = data_blob(NULL, 0);
+
+ /* We may change the pad length before marshalling. */
+ init_rpc_hdr_auth(pauth_out, RPC_SPNEGO_AUTH_TYPE, (int)auth_level, 0, 1);
+
+ DEBUG(5, ("create_spnego_ntlmssp_auth_rpc_bind_req: Processing NTLMSSP Negotiate\n"));
+ nt_status = ntlmssp_update(cli->auth.a_u.ntlmssp_state,
+ null_blob,
+ &request);
+
+ if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ data_blob_free(&request);
+ prs_mem_free(auth_data);
+ return nt_status;
+ }
+
+ /* Wrap this in SPNEGO. */
+ spnego_msg = gen_negTokenInit(OID_NTLMSSP, request);
+
+ data_blob_free(&request);
+
+ /* Auth len in the rpc header doesn't include auth_header. */
+ if (!prs_copy_data_in(auth_data, (char *)spnego_msg.data, spnego_msg.length)) {
+ data_blob_free(&spnego_msg);
+ prs_mem_free(auth_data);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ DEBUG(5, ("create_spnego_ntlmssp_auth_rpc_bind_req: NTLMSSP Negotiate:\n"));
+ dump_data(5, (const char *)spnego_msg.data, spnego_msg.length);
+
+ data_blob_free(&spnego_msg);
+ return NT_STATUS_OK;
+}
+
+/*******************************************************************
+ Creates NTLMSSP auth bind.
+ ********************************************************************/
+
+static NTSTATUS create_ntlmssp_auth_rpc_bind_req( struct rpc_pipe_client *cli,
+ enum pipe_auth_level auth_level,
+ RPC_HDR_AUTH *pauth_out,
+ prs_struct *auth_data)
+{
+ NTSTATUS nt_status;
+ DATA_BLOB null_blob = data_blob(NULL, 0);
+ DATA_BLOB request = data_blob(NULL, 0);
+
+ /* We may change the pad length before marshalling. */
+ init_rpc_hdr_auth(pauth_out, RPC_NTLMSSP_AUTH_TYPE, (int)auth_level, 0, 1);
+
+ DEBUG(5, ("create_ntlmssp_auth_rpc_bind_req: Processing NTLMSSP Negotiate\n"));
+ nt_status = ntlmssp_update(cli->auth.a_u.ntlmssp_state,
+ null_blob,
+ &request);
+
+ if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ data_blob_free(&request);
+ prs_mem_free(auth_data);
+ return nt_status;
+ }
+
+ /* Auth len in the rpc header doesn't include auth_header. */
+ if (!prs_copy_data_in(auth_data, (char *)request.data, request.length)) {
+ data_blob_free(&request);
+ prs_mem_free(auth_data);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ DEBUG(5, ("create_ntlmssp_auth_rpc_bind_req: NTLMSSP Negotiate:\n"));
+ dump_data(5, (const char *)request.data, request.length);
+
+ data_blob_free(&request);
+ return NT_STATUS_OK;
+}
+
+/*******************************************************************
+ Creates schannel auth bind.
+ ********************************************************************/
+
+static NTSTATUS create_schannel_auth_rpc_bind_req( struct rpc_pipe_client *cli,
+ enum pipe_auth_level auth_level,
+ RPC_HDR_AUTH *pauth_out,
+ prs_struct *auth_data)
+{
+ RPC_AUTH_SCHANNEL_NEG schannel_neg;
+
+ /* We may change the pad length before marshalling. */
+ init_rpc_hdr_auth(pauth_out, RPC_SCHANNEL_AUTH_TYPE, (int)auth_level, 0, 1);
+
+ /* Use lp_workgroup() if domain not specified */
+
+ if (!cli->domain || !cli->domain[0]) {
+ cli->domain = lp_workgroup();
+ }
+
+ init_rpc_auth_schannel_neg(&schannel_neg, cli->domain, global_myname());
+
+ /*
+ * Now marshall the data into the auth parse_struct.
+ */
+
+ if(!smb_io_rpc_auth_schannel_neg("schannel_neg",
+ &schannel_neg, auth_data, 0)) {
+ DEBUG(0,("Failed to marshall RPC_AUTH_SCHANNEL_NEG.\n"));
+ prs_mem_free(auth_data);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ return NT_STATUS_OK;
+}
+
+/*******************************************************************
+ Creates the internals of a DCE/RPC bind request or alter context PDU.
+ ********************************************************************/
+
+static NTSTATUS create_bind_or_alt_ctx_internal(uint8 pkt_type,
+ prs_struct *rpc_out,
+ uint32 rpc_call_id,
+ RPC_IFACE *abstract,
+ RPC_IFACE *transfer,
+ RPC_HDR_AUTH *phdr_auth,
+ prs_struct *pauth_info)
+{
+ RPC_HDR hdr;
+ RPC_HDR_RB hdr_rb;
+ RPC_CONTEXT rpc_ctx;
+ uint16 auth_len = prs_offset(pauth_info);
+ uint8 ss_padding_len = 0;
+ uint16 frag_len = 0;
+
+ /* create the RPC context. */
+ init_rpc_context(&rpc_ctx, 0 /* context id */, abstract, transfer);
+
+ /* create the bind request RPC_HDR_RB */
+ init_rpc_hdr_rb(&hdr_rb, RPC_MAX_PDU_FRAG_LEN, RPC_MAX_PDU_FRAG_LEN, 0x0, &rpc_ctx);
+
+ /* Start building the frag length. */
+ frag_len = RPC_HEADER_LEN + RPC_HDR_RB_LEN(&hdr_rb);
+
+ /* Do we need to pad ? */
+ if (auth_len) {
+ uint16 data_len = RPC_HEADER_LEN + RPC_HDR_RB_LEN(&hdr_rb);
+ if (data_len % 8) {
+ ss_padding_len = 8 - (data_len % 8);
+ phdr_auth->auth_pad_len = ss_padding_len;
+ }
+ frag_len += RPC_HDR_AUTH_LEN + auth_len + ss_padding_len;
+ }
+
+ /* Create the request RPC_HDR */
+ init_rpc_hdr(&hdr, pkt_type, RPC_FLG_FIRST|RPC_FLG_LAST, rpc_call_id, frag_len, auth_len);
+
+ /* Marshall the RPC header */
+ if(!smb_io_rpc_hdr("hdr" , &hdr, rpc_out, 0)) {
+ DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR.\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* Marshall the bind request data */
+ if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_out, 0)) {
+ DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR_RB.\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /*
+ * Grow the outgoing buffer to store any auth info.
+ */
+
+ if(auth_len != 0) {
+ if (ss_padding_len) {
+ char pad[8];
+ memset(pad, '\0', 8);
+ if (!prs_copy_data_in(rpc_out, pad, ss_padding_len)) {
+ DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall padding.\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+
+ if(!smb_io_rpc_hdr_auth("hdr_auth", phdr_auth, rpc_out, 0)) {
+ DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR_AUTH.\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+
+ if(!prs_append_prs_data( rpc_out, pauth_info)) {
+ DEBUG(0,("create_bind_or_alt_ctx_internal: failed to grow parse struct to add auth.\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+
+ return NT_STATUS_OK;
+}
+
+/*******************************************************************
+ Creates a DCE/RPC bind request.
+ ********************************************************************/
+
+static NTSTATUS create_rpc_bind_req(struct rpc_pipe_client *cli,
+ prs_struct *rpc_out,
+ uint32 rpc_call_id,
+ RPC_IFACE *abstract, RPC_IFACE *transfer,
+ enum pipe_auth_type auth_type,
+ enum pipe_auth_level auth_level)
+{
+ RPC_HDR_AUTH hdr_auth;
+ prs_struct auth_info;
+ NTSTATUS ret = NT_STATUS_OK;
+
+ ZERO_STRUCT(hdr_auth);
+ prs_init(&auth_info, RPC_HDR_AUTH_LEN, prs_get_mem_context(rpc_out), MARSHALL);
+
+ switch (auth_type) {
+ case PIPE_AUTH_TYPE_SCHANNEL:
+ ret = create_schannel_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
+ if (!NT_STATUS_IS_OK(ret)) {
+ prs_mem_free(&auth_info);
+ return ret;
+ }
+ break;
+
+ case PIPE_AUTH_TYPE_NTLMSSP:
+ ret = create_ntlmssp_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
+ if (!NT_STATUS_IS_OK(ret)) {
+ prs_mem_free(&auth_info);
+ return ret;
+ }
+ break;
+
+ case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
+ ret = create_spnego_ntlmssp_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
+ if (!NT_STATUS_IS_OK(ret)) {
+ prs_mem_free(&auth_info);
+ return ret;
+ }
+ break;
+
+ case PIPE_AUTH_TYPE_KRB5:
+ ret = create_krb5_auth_bind_req(cli, auth_level, &hdr_auth, &auth_info);
+ if (!NT_STATUS_IS_OK(ret)) {
+ prs_mem_free(&auth_info);
+ return ret;
+ }
+ break;
+
+ case PIPE_AUTH_TYPE_NONE:
+ break;
+
+ default:
+ /* "Can't" happen. */
+ return NT_STATUS_INVALID_INFO_CLASS;
+ }
+
+ ret = create_bind_or_alt_ctx_internal(RPC_BIND,
+ rpc_out,
+ rpc_call_id,
+ abstract,
+ transfer,
+ &hdr_auth,
+ &auth_info);
+
+ prs_mem_free(&auth_info);
+ return ret;
+}
+
+/*******************************************************************
+ Create and add the NTLMSSP sign/seal auth header and data.
+ ********************************************************************/
+
+static NTSTATUS add_ntlmssp_auth_footer(struct rpc_pipe_client *cli,
+ RPC_HDR *phdr,
+ uint32 ss_padding_len,
+ prs_struct *outgoing_pdu)
+{
+ RPC_HDR_AUTH auth_info;
+ NTSTATUS status;
+ DATA_BLOB auth_blob = data_blob(NULL, 0);
+ uint16 data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
+
+ if (!cli->auth.a_u.ntlmssp_state) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* Init and marshall the auth header. */
+ init_rpc_hdr_auth(&auth_info,
+ map_pipe_auth_type_to_rpc_auth_type(cli->auth.auth_type),
+ cli->auth.auth_level,
+ ss_padding_len,
+ 1 /* context id. */);
+
+ if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
+ DEBUG(0,("add_ntlmssp_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
+ data_blob_free(&auth_blob);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ switch (cli->auth.auth_level) {
+ case PIPE_AUTH_LEVEL_PRIVACY:
+ /* Data portion is encrypted. */
+ status = ntlmssp_seal_packet(cli->auth.a_u.ntlmssp_state,
+ (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
+ data_and_pad_len,
+ (unsigned char *)prs_data_p(outgoing_pdu),
+ (size_t)prs_offset(outgoing_pdu),
+ &auth_blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ data_blob_free(&auth_blob);
+ return status;
+ }
+ break;
+
+ case PIPE_AUTH_LEVEL_INTEGRITY:
+ /* Data is signed. */
+ status = ntlmssp_sign_packet(cli->auth.a_u.ntlmssp_state,
+ (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
+ data_and_pad_len,
+ (unsigned char *)prs_data_p(outgoing_pdu),
+ (size_t)prs_offset(outgoing_pdu),
+ &auth_blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ data_blob_free(&auth_blob);
+ return status;
+ }
+ break;
+
+ default:
+ /* Can't happen. */
+ smb_panic("bad auth level");
+ /* Notreached. */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* Finally marshall the blob. */
+
+ if (!prs_copy_data_in(outgoing_pdu, (const char *)auth_blob.data, NTLMSSP_SIG_SIZE)) {
+ DEBUG(0,("add_ntlmssp_auth_footer: failed to add %u bytes auth blob.\n",
+ (unsigned int)NTLMSSP_SIG_SIZE));
+ data_blob_free(&auth_blob);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ data_blob_free(&auth_blob);
+ return NT_STATUS_OK;
+}
+
+/*******************************************************************
+ Create and add the schannel sign/seal auth header and data.
+ ********************************************************************/
+
+static NTSTATUS add_schannel_auth_footer(struct rpc_pipe_client *cli,
+ RPC_HDR *phdr,
+ uint32 ss_padding_len,
+ prs_struct *outgoing_pdu)
+{
+ RPC_HDR_AUTH auth_info;
+ RPC_AUTH_SCHANNEL_CHK verf;
+ struct schannel_auth_struct *sas = cli->auth.a_u.schannel_auth;
+ char *data_p = prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN;
+ size_t data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
+
+ if (!sas) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* Init and marshall the auth header. */
+ init_rpc_hdr_auth(&auth_info,
+ map_pipe_auth_type_to_rpc_auth_type(cli->auth.auth_type),
+ cli->auth.auth_level,
+ ss_padding_len,
+ 1 /* context id. */);
+
+ if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
+ DEBUG(0,("add_schannel_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ switch (cli->auth.auth_level) {
+ case PIPE_AUTH_LEVEL_PRIVACY:
+ case PIPE_AUTH_LEVEL_INTEGRITY:
+ DEBUG(10,("add_schannel_auth_footer: SCHANNEL seq_num=%d\n",
+ sas->seq_num));
+
+ schannel_encode(sas,
+ cli->auth.auth_level,
+ SENDER_IS_INITIATOR,
+ &verf,
+ data_p,
+ data_and_pad_len);
+
+ sas->seq_num++;
+ break;
+
+ default:
+ /* Can't happen. */
+ smb_panic("bad auth level");
+ /* Notreached. */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* Finally marshall the blob. */
+ smb_io_rpc_auth_schannel_chk("",
+ RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
+ &verf,
+ outgoing_pdu,
+ 0);
+
+ return NT_STATUS_OK;
+}
+
+/*******************************************************************
+ Calculate how much data we're going to send in this packet, also
+ work out any sign/seal padding length.
+ ********************************************************************/
+
+static uint32 calculate_data_len_tosend(struct rpc_pipe_client *cli,
+ uint32 data_left,
+ uint16 *p_frag_len,
+ uint16 *p_auth_len,
+ uint32 *p_ss_padding)
+{
+ uint32 data_space, data_len;
+
+ switch (cli->auth.auth_level) {
+ case PIPE_AUTH_LEVEL_NONE:
+ case PIPE_AUTH_LEVEL_CONNECT:
+ data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN;
+ data_len = MIN(data_space, data_left);
+ *p_ss_padding = 0;
+ *p_auth_len = 0;
+ *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + data_len;
+ return data_len;
+
+ case PIPE_AUTH_LEVEL_INTEGRITY:
+ case PIPE_AUTH_LEVEL_PRIVACY:
+ /* Treat the same for all authenticated rpc requests. */
+ switch(cli->auth.auth_type) {
+ case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
+ case PIPE_AUTH_TYPE_NTLMSSP:
+ *p_auth_len = NTLMSSP_SIG_SIZE;
+ break;
+ case PIPE_AUTH_TYPE_SCHANNEL:
+ *p_auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
+ break;
+ default:
+ smb_panic("bad auth type");
+ break;
+ }
+
+ data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
+ RPC_HDR_AUTH_LEN - *p_auth_len;
+
+ data_len = MIN(data_space, data_left);
+ if (data_len % 8) {
+ *p_ss_padding = 8 - (data_len % 8);
+ }
+ *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + /* Normal headers. */
+ data_len + *p_ss_padding + /* data plus padding. */
+ RPC_HDR_AUTH_LEN + *p_auth_len; /* Auth header and auth data. */
+ return data_len;
+
+ default:
+ smb_panic("bad auth level");
+ /* Notreached. */
+ return 0;
+ }
+}
+
+/*******************************************************************
+ External interface.
+ Does an rpc request on a pipe. Incoming data is NDR encoded in in_data.
+ Reply is NDR encoded in out_data. Splits the data stream into RPC PDU's
+ and deals with signing/sealing details.
+ ********************************************************************/
+
+NTSTATUS rpc_api_pipe_req(struct rpc_pipe_client *cli,
+ uint8 op_num,
+ prs_struct *in_data,
+ prs_struct *out_data)
+{
+ NTSTATUS ret;
+ uint32 data_left = prs_offset(in_data);
+ uint32 alloc_hint = prs_offset(in_data);
+ uint32 data_sent_thistime = 0;
+ uint32 current_data_offset = 0;
+ uint32 call_id = get_rpc_call_id();
+ char pad[8];
+ prs_struct outgoing_pdu;
+
+ memset(pad, '\0', 8);
+
+ if (cli->max_xmit_frag < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_MAX_SIGN_SIZE) {
+ /* Server is screwed up ! */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ prs_init(&outgoing_pdu, cli->max_xmit_frag, prs_get_mem_context(in_data), MARSHALL);
+
+ while (1) {
+ RPC_HDR hdr;
+ RPC_HDR_REQ hdr_req;
+ uint16 auth_len = 0;
+ uint16 frag_len = 0;
+ uint8 flags = 0;
+ uint32 ss_padding = 0;
+
+ data_sent_thistime = calculate_data_len_tosend(cli, data_left,
+ &frag_len, &auth_len, &ss_padding);
+
+ if (current_data_offset == 0) {
+ flags = RPC_FLG_FIRST;
+ }
+
+ if (data_sent_thistime == data_left) {
+ flags |= RPC_FLG_LAST;
+ }
+
+ /* Create and marshall the header and request header. */
+ init_rpc_hdr(&hdr, RPC_REQUEST, flags, call_id, frag_len, auth_len);
+
+ if(!smb_io_rpc_hdr("hdr ", &hdr, &outgoing_pdu, 0)) {
+ prs_mem_free(&outgoing_pdu);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* Create the rpc request RPC_HDR_REQ */
+ init_rpc_hdr_req(&hdr_req, alloc_hint, op_num);
+
+ if(!smb_io_rpc_hdr_req("hdr_req", &hdr_req, &outgoing_pdu, 0)) {
+ prs_mem_free(&outgoing_pdu);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* Copy in the data, plus any ss padding. */
+ if (!prs_append_some_prs_data(&outgoing_pdu, in_data, current_data_offset, data_sent_thistime)) {
+ prs_mem_free(&outgoing_pdu);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* Copy the sign/seal padding data. */
+ if (ss_padding) {
+ if (!prs_copy_data_in(&outgoing_pdu, pad, ss_padding)) {
+ prs_mem_free(&outgoing_pdu);
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+
+ /* Generate any auth sign/seal and add the auth footer. */
+ if (auth_len) {
+ switch (cli->auth.auth_type) {
+ case PIPE_AUTH_TYPE_NONE:
+ break;
+ case PIPE_AUTH_TYPE_NTLMSSP:
+ case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
+ ret = add_ntlmssp_auth_footer(cli, &hdr, ss_padding, &outgoing_pdu);
+ if (!NT_STATUS_IS_OK(ret)) {
+ prs_mem_free(&outgoing_pdu);
+ return ret;
+ }
+ break;
+ case PIPE_AUTH_TYPE_SCHANNEL:
+ ret = add_schannel_auth_footer(cli, &hdr, ss_padding, &outgoing_pdu);
+ if (!NT_STATUS_IS_OK(ret)) {
+ prs_mem_free(&outgoing_pdu);
+ return ret;
+ }
+ break;
+ default:
+ smb_panic("bad auth type");
+ break; /* notreached */
+ }
+ }
+
+ /* Actually send the packet. */
+ if (flags & RPC_FLG_LAST) {
+ /* Last packet - send the data, get the reply and return. */
+ ret = rpc_api_pipe(cli, &outgoing_pdu, out_data, RPC_RESPONSE);
+ prs_mem_free(&outgoing_pdu);
+
+
+ if (DEBUGLEVEL >= 50) {
+ pstring dump_name;
+ /* Also capture received data */
+ slprintf(dump_name, sizeof(dump_name) - 1, "%s/reply_%s_%d",
+ dyn_LOGFILEBASE, cli->pipe_name, op_num);
+ prs_dump(dump_name, op_num, out_data);
+ }
+
+ return ret;
+ } else {
+ /* More packets to come - write and continue. */
+ ssize_t num_written = cli_write(cli->cli, cli->fnum, 8, /* 8 means message mode. */
+ prs_data_p(&outgoing_pdu),
+ (off_t)0,
+ (size_t)hdr.frag_len);
+
+ if (num_written != hdr.frag_len) {
+ prs_mem_free(&outgoing_pdu);
+ return cli_get_nt_error(cli->cli);
+ }
+ }
+
+ current_data_offset += data_sent_thistime;
+ data_left -= data_sent_thistime;
+
+ /* Reset the marshalling position back to zero. */
+ if (!prs_set_offset(&outgoing_pdu, 0)) {
+ prs_mem_free(&outgoing_pdu);
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+}
+#if 0
+/****************************************************************************
+ Set the handle state.
+****************************************************************************/
+
+static BOOL rpc_pipe_set_hnd_state(struct rpc_pipe_client *cli,
+ const char *pipe_name, uint16 device_state)
+{
+ BOOL state_set = False;
+ char param[2];
+ uint16 setup[2]; /* only need 2 uint16 setup parameters */
+ char *rparam = NULL;
+ char *rdata = NULL;
+ uint32 rparam_len, rdata_len;
+
+ if (pipe_name == NULL)
+ return False;
+
+ DEBUG(5,("Set Handle state Pipe[%x]: %s - device state:%x\n",
+ cli->fnum, pipe_name, device_state));
+
+ /* create parameters: device state */
+ SSVAL(param, 0, device_state);
+
+ /* create setup parameters. */
+ setup[0] = 0x0001;
+ setup[1] = cli->fnum; /* pipe file handle. got this from an SMBOpenX. */
+
+ /* send the data on \PIPE\ */
+ if (cli_api_pipe(cli->cli, "\\PIPE\\",
+ setup, 2, 0, /* setup, length, max */
+ param, 2, 0, /* param, length, max */
+ NULL, 0, 1024, /* data, length, max */
+ &rparam, &rparam_len, /* return param, length */
+ &rdata, &rdata_len)) /* return data, length */
+ {
+ DEBUG(5, ("Set Handle state: return OK\n"));
+ state_set = True;
+ }
+
+ SAFE_FREE(rparam);
+ SAFE_FREE(rdata);
+
+ return state_set;
+}
+#endif
+
+/****************************************************************************
+ Check the rpc bind acknowledge response.
+****************************************************************************/
+
+static BOOL valid_pipe_name(const int pipe_idx, RPC_IFACE *abstract, RPC_IFACE *transfer)
+{
+ if ( pipe_idx >= PI_MAX_PIPES ) {
+ DEBUG(0,("valid_pipe_name: Programmer error! Invalid pipe index [%d]\n",
+ pipe_idx));
+ return False;
+ }
+
+ DEBUG(5,("Bind Abstract Syntax: "));
+ dump_data(5, (char*)&pipe_names[pipe_idx].abstr_syntax,
+ sizeof(pipe_names[pipe_idx].abstr_syntax));
+ DEBUG(5,("Bind Transfer Syntax: "));
+ dump_data(5, (char*)&pipe_names[pipe_idx].trans_syntax,
+ sizeof(pipe_names[pipe_idx].trans_syntax));
+
+ /* copy the required syntaxes out so we can do the right bind */
+
+ *transfer = pipe_names[pipe_idx].trans_syntax;
+ *abstract = pipe_names[pipe_idx].abstr_syntax;
+
+ return True;
+}
+
+/****************************************************************************
+ Check the rpc bind acknowledge response.
+****************************************************************************/
+
+static BOOL check_bind_response(RPC_HDR_BA *hdr_ba, const int pipe_idx, RPC_IFACE *transfer)
+{
+ if ( hdr_ba->addr.len == 0) {
+ DEBUG(4,("Ignoring length check -- ASU bug (server didn't fill in the pipe name correctly)"));
+ }
+
+# if 0 /* JERRY -- apparently ASU forgets to fill in the server pipe name sometimes */
+ if ( !strequal(hdr_ba->addr.str, pipe_names[pipe_idx].client_pipe) &&
+ !strequal(hdr_ba->addr.str, pipe_names[pipe_idx].server_pipe) )
+ {
+ DEBUG(4,("bind_rpc_pipe: pipe_name %s != expected pipe %s. oh well!\n",
+ pipe_names[i].server_pipe ,hdr_ba->addr.str));
+ return False;
+ }
+
+ DEBUG(5,("bind_rpc_pipe: server pipe_name found: %s\n", pipe_names[i].server_pipe ));
+
+ if (pipe_names[pipe_idx].server_pipe == NULL) {
+ DEBUG(2,("bind_rpc_pipe: pipe name %s unsupported\n", hdr_ba->addr.str));
+ return False;
+ }
+#endif /* JERRY */
+
+ /* check the transfer syntax */
+ if ((hdr_ba->transfer.version != transfer->version) ||
+ (memcmp(&hdr_ba->transfer.uuid, &transfer->uuid, sizeof(transfer->uuid)) !=0)) {
+ DEBUG(2,("bind_rpc_pipe: transfer syntax differs\n"));
+ return False;
+ }
+
+ if (hdr_ba->res.num_results != 0x1 || hdr_ba->res.result != 0) {
+ DEBUG(2,("bind_rpc_pipe: bind denied results: %d reason: %x\n",
+ hdr_ba->res.num_results, hdr_ba->res.reason));
+ }
+
+ DEBUG(5,("check_bind_response: accepted!\n"));
+ return True;
+}
+
+/*******************************************************************
+ Creates a DCE/RPC bind authentication response.
+ This is the packet that is sent back to the server once we
+ have received a BIND-ACK, to finish the third leg of
+ the authentication handshake.
+ ********************************************************************/
+
+static NTSTATUS create_rpc_bind_auth3(struct rpc_pipe_client *cli,
+ uint32 rpc_call_id,
+ enum pipe_auth_type auth_type,
+ enum pipe_auth_level auth_level,
+ DATA_BLOB *pauth_blob,
+ prs_struct *rpc_out)
+{
+ RPC_HDR hdr;
+ RPC_HDR_AUTH hdr_auth;
+ uint32 pad = 0;
+
+ /* Create the request RPC_HDR */
+ init_rpc_hdr(&hdr, RPC_AUTH3, RPC_FLG_FIRST|RPC_FLG_LAST, rpc_call_id,
+ RPC_HEADER_LEN + 4 /* pad */ + RPC_HDR_AUTH_LEN + pauth_blob->length,
+ pauth_blob->length );
+
+ /* Marshall it. */
+ if(!smb_io_rpc_hdr("hdr", &hdr, rpc_out, 0)) {
+ DEBUG(0,("create_rpc_bind_auth3: failed to marshall RPC_HDR.\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /*
+ I'm puzzled about this - seems to violate the DCE RPC auth rules,
+ about padding - shouldn't this pad to length 8 ? JRA.
+ */
+
+ /* 4 bytes padding. */
+ if (!prs_uint32("pad", rpc_out, 0, &pad)) {
+ DEBUG(0,("create_rpc_bind_auth3: failed to marshall 4 byte pad.\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* Create the request RPC_HDR_AUTHA */
+ init_rpc_hdr_auth(&hdr_auth,
+ map_pipe_auth_type_to_rpc_auth_type(auth_type),
+ auth_level, 0, 1);
+
+ if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rpc_out, 0)) {
+ DEBUG(0,("create_rpc_bind_auth3: failed to marshall RPC_HDR_AUTHA.\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /*
+ * Append the auth data to the outgoing buffer.
+ */
+
+ if(!prs_copy_data_in(rpc_out, (char *)pauth_blob->data, pauth_blob->length)) {
+ DEBUG(0,("create_rpc_bind_auth3: failed to marshall auth blob.\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Create and send the third packet in an RPC auth.
+****************************************************************************/
+
+static NTSTATUS rpc_finish_auth3_bind(struct rpc_pipe_client *cli,
+ RPC_HDR *phdr,
+ prs_struct *rbuf,
+ uint32 rpc_call_id,
+ enum pipe_auth_type auth_type,
+ enum pipe_auth_level auth_level)
+{
+ DATA_BLOB server_response = data_blob(NULL,0);
+ DATA_BLOB client_reply = data_blob(NULL,0);
+ RPC_HDR_AUTH hdr_auth;
+ NTSTATUS nt_status;
+ prs_struct rpc_out;
+ ssize_t ret;
+
+ if (!phdr->auth_len || (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(rbuf, 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, rbuf, 0)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* TODO - check auth_type/auth_level match. */
+
+ server_response = data_blob(NULL, phdr->auth_len);
+ prs_copy_data_out((char *)server_response.data, rbuf, phdr->auth_len);
+
+ nt_status = ntlmssp_update(cli->auth.a_u.ntlmssp_state,
+ server_response,
+ &client_reply);
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(0,("rpc_finish_auth3_bind: NTLMSSP update using server blob failed.\n"));
+ return nt_status;
+ }
+
+ prs_init(&rpc_out, 0, prs_get_mem_context(rbuf), MARSHALL);
+
+ nt_status = create_rpc_bind_auth3(cli, rpc_call_id,
+ auth_type, auth_level,
+ &client_reply, &rpc_out);
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ prs_mem_free(&rpc_out);
+ data_blob_free(&client_reply);
+ data_blob_free(&server_response);
+ return nt_status;
+ }
+
+ /* 8 here is named pipe message mode. */
+ ret = cli_write(cli->cli, cli->fnum, 0x8, prs_data_p(&rpc_out), 0,
+ (size_t)prs_offset(&rpc_out));
+
+ if (ret != (ssize_t)prs_offset(&rpc_out)) {
+ DEBUG(0,("rpc_send_auth_auth3: cli_write failed. Return was %d\n", (int)ret));
+ prs_mem_free(&rpc_out);
+ data_blob_free(&client_reply);
+ data_blob_free(&server_response);
+ return cli_get_nt_error(cli->cli);
+ }
+
+ DEBUG(5,("rpc_send_auth_auth3: Remote machine %s pipe %s "
+ "fnum 0x%x sent auth3 response ok.\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum));
+
+ prs_mem_free(&rpc_out);
+ data_blob_free(&client_reply);
+ data_blob_free(&server_response);
+ return NT_STATUS_OK;
+}
+
+/*******************************************************************
+ Creates a DCE/RPC bind alter context authentication request which
+ may contain a spnego auth blobl
+ ********************************************************************/
+
+static NTSTATUS create_rpc_alter_context(uint32 rpc_call_id,
+ RPC_IFACE *abstract,
+ RPC_IFACE *transfer,
+ enum pipe_auth_level auth_level,
+ const DATA_BLOB *pauth_blob, /* spnego auth blob already created. */
+ prs_struct *rpc_out)
+{
+ RPC_HDR_AUTH hdr_auth;
+ prs_struct auth_info;
+ NTSTATUS ret = NT_STATUS_OK;
+
+ ZERO_STRUCT(hdr_auth);
+ prs_init(&auth_info, RPC_HDR_AUTH_LEN, prs_get_mem_context(rpc_out), MARSHALL);
+
+ /* We may change the pad length before marshalling. */
+ init_rpc_hdr_auth(&hdr_auth, RPC_SPNEGO_AUTH_TYPE, (int)auth_level, 0, 1);
+
+ if (pauth_blob->length) {
+ if (!prs_copy_data_in(&auth_info, (const char *)pauth_blob->data, pauth_blob->length)) {
+ prs_mem_free(&auth_info);
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+
+ ret = create_bind_or_alt_ctx_internal(RPC_ALTCONT,
+ rpc_out,
+ rpc_call_id,
+ abstract,
+ transfer,
+ &hdr_auth,
+ &auth_info);
+ prs_mem_free(&auth_info);
+ return ret;
+}
+
+/*******************************************************************
+ Third leg of the SPNEGO bind mechanism - sends alter context PDU
+ and gets a response.
+ ********************************************************************/
+
+static NTSTATUS rpc_finish_spnego_ntlmssp_bind(struct rpc_pipe_client *cli,
+ RPC_HDR *phdr,
+ prs_struct *rbuf,
+ uint32 rpc_call_id,
+ RPC_IFACE *abstract,
+ RPC_IFACE *transfer,
+ enum pipe_auth_type auth_type,
+ enum pipe_auth_level auth_level)
+{
+ DATA_BLOB server_spnego_response = data_blob(NULL,0);
+ DATA_BLOB server_ntlm_response = data_blob(NULL,0);
+ DATA_BLOB client_reply = data_blob(NULL,0);
+ DATA_BLOB tmp_blob = data_blob(NULL, 0);
+ RPC_HDR_AUTH hdr_auth;
+ NTSTATUS nt_status;
+ prs_struct rpc_out;
+
+ if (!phdr->auth_len || (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(rbuf, 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, rbuf, 0)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ server_spnego_response = data_blob(NULL, phdr->auth_len);
+ prs_copy_data_out((char *)server_spnego_response.data, rbuf, 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);
+
+ nt_status = ntlmssp_update(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(nt_status)) {
+ DEBUG(0,("rpc_finish_spnego_ntlmssp_bind: NTLMSSP update using server blob failed.\n"));
+ data_blob_free(&client_reply);
+ return nt_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,0); /* Ensure it's safe to free this just in case. */
+
+ /* Now prepare the alter context pdu. */
+ prs_init(&rpc_out, 0, prs_get_mem_context(rbuf), MARSHALL);
+
+ nt_status = create_rpc_alter_context(rpc_call_id,
+ abstract,
+ transfer,
+ auth_level,
+ &client_reply,
+ &rpc_out);
+
+ data_blob_free(&client_reply);
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ prs_mem_free(&rpc_out);
+ return nt_status;
+ }
+
+ /* Initialize the returning data struct. */
+ prs_mem_free(rbuf);
+ prs_init(rbuf, 0, cli->cli->mem_ctx, UNMARSHALL);
+
+ nt_status = rpc_api_pipe(cli, &rpc_out, rbuf, RPC_ALTCONTRESP);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ prs_mem_free(&rpc_out);
+ return nt_status;
+ }
+
+ prs_mem_free(&rpc_out);
+
+ /* Get the auth blob from the reply. */
+ if(!smb_io_rpc_hdr("rpc_hdr ", phdr, rbuf, 0)) {
+ DEBUG(0,("rpc_finish_spnego_ntlmssp_bind: Failed to unmarshall RPC_HDR.\n"));
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ if (!prs_set_offset(rbuf, 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, rbuf, 0)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ server_spnego_response = data_blob(NULL, phdr->auth_len);
+ prs_copy_data_out((char *)server_spnego_response.data, rbuf, phdr->auth_len);
+
+ /* Check we got a valid auth response. */
+ if (!spnego_parse_auth_response(server_spnego_response, NT_STATUS_OK, &tmp_blob)) {
+ data_blob_free(&server_spnego_response);
+ data_blob_free(&tmp_blob);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ data_blob_free(&server_spnego_response);
+ data_blob_free(&tmp_blob);
+
+ DEBUG(5,("rpc_finish_spnego_ntlmssp_bind: alter context request to "
+ "remote machine %s pipe %s fnum 0x%x.\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum));
+
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Do an rpc bind.
+****************************************************************************/
+
+static NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli,
+ enum pipe_auth_type auth_type,
+ enum pipe_auth_level auth_level)
+{
+ RPC_HDR hdr;
+ RPC_HDR_BA hdr_ba;
+ RPC_IFACE abstract;
+ RPC_IFACE transfer;
+ prs_struct rpc_out;
+ prs_struct rbuf;
+ uint32 rpc_call_id;
+ NTSTATUS status;
+
+ DEBUG(5,("Bind RPC Pipe[%x]: %s auth_type %u, auth_level %u\n",
+ (unsigned int)cli->fnum,
+ cli->pipe_name,
+ (unsigned int)auth_type,
+ (unsigned int)auth_level ));
+
+ if (!valid_pipe_name(cli->pipe_idx, &abstract, &transfer)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ prs_init(&rpc_out, 0, cli->cli->mem_ctx, MARSHALL);
+
+ rpc_call_id = get_rpc_call_id();
+
+ /* Marshall the outgoing data. */
+ status = create_rpc_bind_req(cli, &rpc_out, rpc_call_id,
+ &abstract, &transfer,
+ auth_type,
+ auth_level);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ prs_mem_free(&rpc_out);
+ return status;
+ }
+
+ /* Initialize the incoming data struct. */
+ prs_init(&rbuf, 0, cli->cli->mem_ctx, UNMARSHALL);
+
+ /* send data on \PIPE\. receive a response */
+ status = rpc_api_pipe(cli, &rpc_out, &rbuf, RPC_BINDACK);
+ if (!NT_STATUS_IS_OK(status)) {
+ prs_mem_free(&rpc_out);
+ return status;
+ }
+
+ prs_mem_free(&rpc_out);
+
+ DEBUG(3,("rpc_pipe_bind: Remote machine %s pipe %s "
+ "fnum 0x%x bind request returned ok.\n",
+ cli->cli->desthost,
+ cli->pipe_name,
+ (unsigned int)cli->fnum));
+
+ /* Unmarshall the RPC header */
+ if(!smb_io_rpc_hdr("hdr" , &hdr, &rbuf, 0)) {
+ DEBUG(0,("rpc_pipe_bind: failed to unmarshall RPC_HDR.\n"));
+ prs_mem_free(&rbuf);
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ if(!smb_io_rpc_hdr_ba("", &hdr_ba, &rbuf, 0)) {
+ DEBUG(0,("rpc_pipe_bind: Failed to unmarshall RPC_HDR_BA.\n"));
+ prs_mem_free(&rbuf);
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ if(!check_bind_response(&hdr_ba, cli->pipe_idx, &transfer)) {
+ DEBUG(2,("rpc_pipe_bind: check_bind_response failed.\n"));
+ prs_mem_free(&rbuf);
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+
+ cli->max_xmit_frag = hdr_ba.bba.max_tsize;
+ cli->max_recv_frag = hdr_ba.bba.max_rsize;
+
+ /* For authenticated binds we may need to do 3 or 4 leg binds. */
+ switch(auth_type) {
+
+ case PIPE_AUTH_TYPE_NONE:
+ case PIPE_AUTH_TYPE_SCHANNEL:
+ /* Bind complete. */
+ break;
+
+ case PIPE_AUTH_TYPE_NTLMSSP:
+ /* Need to send AUTH3 packet - no reply. */
+ status = rpc_finish_auth3_bind(cli, &hdr, &rbuf, rpc_call_id,
+ auth_type, auth_level);
+ if (!NT_STATUS_IS_OK(status)) {
+ prs_mem_free(&rbuf);
+ return status;
+ }
+ break;
+
+ case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
+ /* Need to send alter context request and reply. */
+ status = rpc_finish_spnego_ntlmssp_bind(cli, &hdr, &rbuf, rpc_call_id,
+ &abstract, &transfer,
+ auth_type, auth_level);
+ if (!NT_STATUS_IS_OK(status)) {
+ prs_mem_free(&rbuf);
+ return status;
+ }
+ break;
+
+ case PIPE_AUTH_TYPE_KRB5:
+ /* */
+
+ default:
+ DEBUG(0,("cli_finish_bind_auth: unknown auth type %u\n",
+ (unsigned int)auth_type ));
+ prs_mem_free(&rbuf);
+ return NT_STATUS_INVALID_INFO_CLASS;
+ }
+
+ /* Pipe is bound - set up auth_type and auth_level data. */
+
+ cli->auth.auth_type = auth_type;
+ cli->auth.auth_level = auth_level;
+
+ prs_mem_free(&rbuf);
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Open a named pipe over SMB to a remote server.
+ *
+ * CAVEAT CALLER OF THIS FUNCTION:
+ * The returned rpc_pipe_client saves a copy of the cli_state cli pointer,
+ * so be sure that this function is called AFTER any structure (vs pointer)
+ * assignment of the cli. In particular, libsmbclient does structure
+ * assignments of cli, which invalidates the data in the returned
+ * rpc_pipe_client if this function is called before the structure assignment
+ * of cli.
+ *
+ ****************************************************************************/
+
+static struct rpc_pipe_client *cli_rpc_pipe_open(struct cli_state *cli, int pipe_idx, NTSTATUS *perr)
+{
+ TALLOC_CTX *mem_ctx;
+ struct rpc_pipe_client *result;
+ int fnum;
+
+ *perr = NT_STATUS_NO_MEMORY;
+
+ /* The pipe name index must fall within our array */
+ SMB_ASSERT((pipe_idx >= 0) && (pipe_idx < PI_MAX_PIPES));
+
+ mem_ctx = talloc_init("struct rpc_pipe_client");
+ if (mem_ctx == NULL) {
+ return NULL;
+ }
+
+ result = TALLOC_ZERO_P(mem_ctx, struct rpc_pipe_client);
+ if (result == NULL) {
+ return NULL;
+ }
+
+ result->mem_ctx = mem_ctx;
+
+ result->pipe_name = cli_get_pipe_name(pipe_idx);
+
+ fnum = cli_nt_create(cli, result->pipe_name, DESIRED_ACCESS_PIPE);
+
+ if (fnum == -1) {
+ DEBUG(1,("cli_rpc_pipe_open: cli_nt_create failed on pipe %s "
+ "to machine %s. Error was %s\n",
+ result->pipe_name, cli->desthost,
+ cli_errstr(cli)));
+ *perr = cli_get_nt_error(cli);
+ talloc_destroy(result->mem_ctx);
+ return NULL;
+ }
+
+ result->fnum = fnum;
+ result->cli = cli;
+ result->pipe_idx = pipe_idx;
+ result->auth.auth_type = PIPE_AUTH_TYPE_NONE;
+ result->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
+
+ if (pipe_idx == PI_NETLOGON) {
+ /* Set up a netlogon credential chain for a netlogon pipe. */
+ result->dc = TALLOC_ZERO_P(mem_ctx, struct dcinfo);
+ if (result->dc == NULL) {
+ talloc_destroy(result->mem_ctx);
+ return NULL;
+ }
+ }
+
+ DLIST_ADD(cli->pipe_list, result);
+ *perr = NT_STATUS_OK;
+
+ return result;
+}
+
+/****************************************************************************
+ Open a named pipe to an SMB server and bind anonymously.
+ ****************************************************************************/
+
+struct rpc_pipe_client *cli_rpc_pipe_open_noauth(struct cli_state *cli, int pipe_idx, NTSTATUS *perr)
+{
+ struct rpc_pipe_client *result;
+
+ result = cli_rpc_pipe_open(cli, pipe_idx, perr);
+ if (result == NULL) {
+ return NULL;
+ }
+
+ *perr = rpc_pipe_bind(result, PIPE_AUTH_TYPE_NONE, PIPE_AUTH_LEVEL_NONE);
+ if (!NT_STATUS_IS_OK(*perr)) {
+ DEBUG(0, ("cli_rpc_pipe_open_noauth: rpc_pipe_bind for pipe %s failed with error %s\n",
+ cli_get_pipe_name(pipe_idx), nt_errstr(*perr) ));
+ cli_rpc_pipe_close(result);
+ return NULL;
+ }
+
+ DEBUG(10,("cli_rpc_pipe_open_noauth: opened pipe %s to machine %s and bound anonymously.\n",
+ result->pipe_name, cli->desthost ));
+
+ return result;
+}
+
+/****************************************************************************
+ Free function for NTLMSSP auth.
+ ****************************************************************************/
+
+static void cli_ntlmssp_auth_free(struct cli_pipe_auth_data *auth)
+{
+ if (auth->a_u.ntlmssp_state) {
+ ntlmssp_end(&auth->a_u.ntlmssp_state);
+ auth->a_u.ntlmssp_state = NULL;
+ }
+}
+
+/****************************************************************************
+ Open a named pipe to an SMB server and bind using NTLMSSP or SPNEGO NTLMSSP
+ ****************************************************************************/
+
+static struct rpc_pipe_client *cli_rpc_pipe_open_ntlmssp_internal(struct cli_state *cli,
+ int pipe_idx,
+ enum pipe_auth_type auth_type,
+ enum pipe_auth_level auth_level,
+ const char *domain,
+ const char *username,
+ const char *password,
+ NTSTATUS *perr)
+{
+ struct rpc_pipe_client *result;
+ NTLMSSP_STATE *ntlmssp_state = NULL;
+
+ result = cli_rpc_pipe_open(cli, pipe_idx, perr);
+ if (result == NULL) {
+ return NULL;
+ }
+
+ result->auth.cli_auth_data_free_func = cli_ntlmssp_auth_free;
+
+ result->domain = domain;
+ result->user_name = username;
+ pwd_set_cleartext(&result->pwd, password);
+
+ *perr = ntlmssp_client_start(&ntlmssp_state);
+ if (!NT_STATUS_IS_OK(*perr)) {
+ goto err;
+ }
+
+ result->auth.a_u.ntlmssp_state = ntlmssp_state;
+
+ *perr = ntlmssp_set_username(ntlmssp_state, cli->user_name);
+ if (!NT_STATUS_IS_OK(*perr)) {
+ goto err;
+ }
+
+ *perr = ntlmssp_set_domain(ntlmssp_state, cli->domain);
+ if (!NT_STATUS_IS_OK(*perr)) {
+ goto err;
+ }
+
+ if (cli->pwd.null_pwd) {
+ *perr = ntlmssp_set_password(ntlmssp_state, NULL);
+ if (!NT_STATUS_IS_OK(*perr)) {
+ goto err;
+ }
+ } else {
+ *perr = ntlmssp_set_password(ntlmssp_state, password);
+ if (!NT_STATUS_IS_OK(*perr)) {
+ goto err;
+ }
+ }
+
+ /* Turn off sign+seal to allow selected auth level to turn it back on. */
+ ntlmssp_state->neg_flags &= ~(NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
+
+ if (auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
+ } else if (auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL | NTLMSSP_NEGOTIATE_SIGN;
+ }
+
+ *perr = rpc_pipe_bind(result, auth_type, auth_level);
+ if (!NT_STATUS_IS_OK(*perr)) {
+ DEBUG(0, ("cli_rpc_pipe_open_ntlmssp_internal: cli_rpc_pipe_bind failed with error %s\n",
+ nt_errstr(*perr) ));
+ goto err;
+ }
+
+ DEBUG(10,("cli_rpc_pipe_open_ntlmssp_internal: opened pipe %s to machine %s and"
+ "bound NTLMSSP as user %s\\%s.\n",
+ result->pipe_name, cli->desthost,
+ domain, username ));
+
+ return result;
+
+ err:
+
+ cli_rpc_pipe_close(result);
+ return NULL;
+}
+
+/****************************************************************************
+ External interface.
+ Open a named pipe to an SMB server and bind using NTLMSSP (bind type 10)
+ ****************************************************************************/
+
+struct rpc_pipe_client *cli_rpc_pipe_open_ntlmssp(struct cli_state *cli,
+ int pipe_idx,
+ enum pipe_auth_level auth_level,
+ const char *domain,
+ const char *username,
+ const char *password,
+ NTSTATUS *perr)
+{
+ return cli_rpc_pipe_open_ntlmssp_internal(cli,
+ pipe_idx,
+ PIPE_AUTH_TYPE_NTLMSSP,
+ auth_level,
+ domain,
+ username,
+ password,
+ perr);
+}
+
+/****************************************************************************
+ External interface.
+ Open a named pipe to an SMB server and bind using spnego NTLMSSP (bind type 9)
+ ****************************************************************************/
+
+struct rpc_pipe_client *cli_rpc_pipe_open_spnego_ntlmssp(struct cli_state *cli,
+ int pipe_idx,
+ enum pipe_auth_level auth_level,
+ const char *domain,
+ const char *username,
+ const char *password,
+ NTSTATUS *perr)
+{
+ return cli_rpc_pipe_open_ntlmssp_internal(cli,
+ pipe_idx,
+ PIPE_AUTH_TYPE_SPNEGO_NTLMSSP,
+ auth_level,
+ domain,
+ username,
+ password,
+ perr);
+}
+
+/****************************************************************************
+ Open a netlogon pipe and get the schannel session key.
+ Now exposed to external callers.
+ ****************************************************************************/
+
+struct rpc_pipe_client *get_schannel_session_key(struct cli_state *cli,
+ const char *domain,
+ uint32 *pneg_flags,
+ NTSTATUS *perr)
+{
+ struct rpc_pipe_client *netlogon_pipe = NULL;
+ uint32 sec_chan_type = 0;
+ unsigned char machine_pwd[16];
+ fstring machine_account;
+
+ netlogon_pipe = cli_rpc_pipe_open_noauth(cli, PI_NETLOGON, perr);
+ if (!netlogon_pipe) {
+ return NULL;
+ }
+
+ /* Get the machine account credentials from secrets.tdb. */
+ if (!get_trust_pw(domain, machine_pwd, &sec_chan_type)) {
+ DEBUG(0, ("get_schannel_session_key: could not fetch "
+ "trust account password for domain '%s'\n",
+ domain));
+ cli_rpc_pipe_close(netlogon_pipe);
+ *perr = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+ return NULL;
+ }
+
+ if ( IS_DC && !strequal(domain, lp_workgroup()) && lp_allow_trusted_domains()) {
+ fstrcpy( machine_account, lp_workgroup() );
+ } else {
+ /* Hmmm. Is this correct for trusted domains when we're a member server ? JRA. */
+ if (strequal(domain, lp_workgroup())) {
+ fstrcpy(machine_account, global_myname());
+ } else {
+ fstrcpy(machine_account, domain);
+ }
+ }
+
+ *perr = rpccli_netlogon_setup_creds(netlogon_pipe,
+ cli->desthost, /* server name */
+ domain, /* domain */
+ global_myname(), /* client name */
+ machine_account, /* machine account name */
+ machine_pwd,
+ sec_chan_type,
+ pneg_flags);
+
+ if (!NT_STATUS_IS_OK(*perr)) {
+ DEBUG(3,("get_schannel_session_key: rpccli_netlogon_setup_creds "
+ "failed with result %s to server %s, domain %s, machine account %s.\n",
+ nt_errstr(*perr), cli->desthost, domain, machine_account ));
+ cli_rpc_pipe_close(netlogon_pipe);
+ return NULL;
+ }
+
+ if (((*pneg_flags) & NETLOGON_NEG_SCHANNEL) == 0) {
+ DEBUG(3, ("get_schannel_session_key: Server %s did not offer schannel\n",
+ cli->desthost));
+ cli_rpc_pipe_close(netlogon_pipe);
+ *perr = NT_STATUS_INVALID_NETWORK_RESPONSE;
+ return NULL;
+ }
+
+ return netlogon_pipe;
+}
+
+/****************************************************************************
+ External interface.
+ Open a named pipe to an SMB server and bind using schannel (bind type 68)
+ using session_key. sign and seal.
+ ****************************************************************************/
+
+struct rpc_pipe_client *cli_rpc_pipe_open_schannel_with_key(struct cli_state *cli,
+ int pipe_idx,
+ enum pipe_auth_level auth_level,
+ const char *domain,
+ const struct dcinfo *pdc,
+ NTSTATUS *perr)
+{
+ struct rpc_pipe_client *result;
+
+ result = cli_rpc_pipe_open(cli, pipe_idx, perr);
+ if (result == NULL) {
+ return NULL;
+ }
+
+ result->auth.a_u.schannel_auth = TALLOC_ZERO_P(result->mem_ctx, struct schannel_auth_struct);
+ if (!result->auth.a_u.schannel_auth) {
+ cli_rpc_pipe_close(result);
+ *perr = NT_STATUS_NO_MEMORY;
+ return NULL;
+ }
+
+ result->domain = domain;
+ memcpy(result->auth.a_u.schannel_auth->sess_key, pdc->sess_key, 16);
+
+ *perr = rpc_pipe_bind(result, PIPE_AUTH_TYPE_SCHANNEL, auth_level);
+ if (!NT_STATUS_IS_OK(*perr)) {
+ DEBUG(0, ("cli_rpc_pipe_open_schannel_with_key: cli_rpc_pipe_bind failed with error %s\n",
+ nt_errstr(*perr) ));
+ cli_rpc_pipe_close(result);
+ return NULL;
+ }
+
+ /* The credentials on a new netlogon pipe are the ones we are passed in - copy them over. */
+ if (result->dc) {
+ *result->dc = *pdc;
+ }
+
+ DEBUG(10,("cli_rpc_pipe_open_schannel_with_key: opened pipe %s to machine %s "
+ "for domain %s "
+ "and bound using schannel.\n",
+ result->pipe_name, cli->desthost, domain ));
+
+ return result;
+}
+
+/****************************************************************************
+ Open a named pipe to an SMB server and bind using schannel (bind type 68).
+ Fetch the session key ourselves using a temporary netlogon pipe. This
+ version uses an ntlmssp auth bound netlogon pipe to get the key.
+ ****************************************************************************/
+
+static struct rpc_pipe_client *get_schannel_session_key_auth_ntlmssp(struct cli_state *cli,
+ const char *domain,
+ const char *username,
+ const char *password,
+ uint32 *pneg_flags,
+ NTSTATUS *perr)
+{
+ struct rpc_pipe_client *netlogon_pipe = NULL;
+ uint32 sec_chan_type = 0;
+ unsigned char machine_pwd[16];
+ fstring machine_account;
+
+ netlogon_pipe = cli_rpc_pipe_open_spnego_ntlmssp(cli, PI_NETLOGON, PIPE_AUTH_LEVEL_PRIVACY, domain, username, password, perr);
+ if (!netlogon_pipe) {
+ return NULL;
+ }
+
+ /* Get the machine account credentials from secrets.tdb. */
+ if (!get_trust_pw(domain, machine_pwd, &sec_chan_type)) {
+ DEBUG(0, ("get_schannel_session_key_auth_ntlmssp: could not fetch "
+ "trust account password for domain '%s'\n",
+ domain));
+ cli_rpc_pipe_close(netlogon_pipe);
+ *perr = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+ return NULL;
+ }
+
+ /* if we are a DC and this is a trusted domain, then we need to use our
+ domain name in the net_req_auth2() request */
+
+ if ( IS_DC && !strequal(domain, lp_workgroup()) && lp_allow_trusted_domains()) {
+ fstrcpy( machine_account, lp_workgroup() );
+ } else {
+ /* Hmmm. Is this correct for trusted domains when we're a member server ? JRA. */
+ if (strequal(domain, lp_workgroup())) {
+ fstrcpy(machine_account, global_myname());
+ } else {
+ fstrcpy(machine_account, domain);
+ }
+ }
+
+ *perr = rpccli_netlogon_setup_creds(netlogon_pipe,
+ cli->desthost, /* server name */
+ domain, /* domain */
+ global_myname(), /* client name */
+ machine_account, /* machine account name */
+ machine_pwd,
+ sec_chan_type,
+ pneg_flags);
+
+ if (!NT_STATUS_IS_OK(*perr)) {
+ DEBUG(3,("get_schannel_session_key_auth_ntlmssp: rpccli_netlogon_setup_creds "
+ "failed with result %s\n",
+ nt_errstr(*perr) ));
+ cli_rpc_pipe_close(netlogon_pipe);
+ return NULL;
+ }
+
+ if (((*pneg_flags) & NETLOGON_NEG_SCHANNEL) == 0) {
+ DEBUG(3, ("get_schannel_session_key_auth_ntlmssp: Server %s did not offer schannel\n",
+ cli->desthost));
+ cli_rpc_pipe_close(netlogon_pipe);
+ *perr = NT_STATUS_INVALID_NETWORK_RESPONSE;
+ return NULL;
+ }
+
+ return netlogon_pipe;
+}
+
+/****************************************************************************
+ Open a named pipe to an SMB server and bind using schannel (bind type 68).
+ Fetch the session key ourselves using a temporary netlogon pipe. This version
+ uses an ntlmssp bind to get the session key.
+ ****************************************************************************/
+
+struct rpc_pipe_client *cli_rpc_pipe_open_ntlmssp_auth_schannel(struct cli_state *cli,
+ int pipe_idx,
+ enum pipe_auth_level auth_level,
+ const char *domain,
+ const char *username,
+ const char *password,
+ NTSTATUS *perr)
+{
+ uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS|NETLOGON_NEG_SCHANNEL;
+ struct rpc_pipe_client *netlogon_pipe = NULL;
+ struct rpc_pipe_client *result = NULL;
+
+ netlogon_pipe = get_schannel_session_key_auth_ntlmssp(cli, domain, username,
+ password, &neg_flags, perr);
+ if (!netlogon_pipe) {
+ DEBUG(0,("cli_rpc_pipe_open_ntlmssp_auth_schannel: failed to get schannel session "
+ "key from server %s for domain %s.\n",
+ cli->desthost, domain ));
+ return NULL;
+ }
+
+ result = cli_rpc_pipe_open_schannel_with_key(cli, pipe_idx,
+ auth_level,
+ domain, netlogon_pipe->dc, perr);
+
+ /* Now we've bound using the session key we can close the netlog pipe. */
+ cli_rpc_pipe_close(netlogon_pipe);
+
+ return result;
+}
+
+/****************************************************************************
+ Open a named pipe to an SMB server and bind using schannel (bind type 68).
+ Fetch the session key ourselves using a temporary netlogon pipe.
+ ****************************************************************************/
+
+struct rpc_pipe_client *cli_rpc_pipe_open_schannel(struct cli_state *cli,
+ int pipe_idx,
+ enum pipe_auth_level auth_level,
+ const char *domain,
+ NTSTATUS *perr)
+{
+ uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS|NETLOGON_NEG_SCHANNEL;
+ struct rpc_pipe_client *netlogon_pipe = NULL;
+ struct rpc_pipe_client *result = NULL;
+
+ netlogon_pipe = get_schannel_session_key(cli, domain, &neg_flags, perr);
+ if (!netlogon_pipe) {
+ DEBUG(0,("cli_rpc_pipe_open_schannel: failed to get schannel session "
+ "key from server %s for domain %s.\n",
+ cli->desthost, domain ));
+ return NULL;
+ }
+
+ result = cli_rpc_pipe_open_schannel_with_key(cli, pipe_idx,
+ auth_level,
+ domain, netlogon_pipe->dc, perr);
+
+ /* Now we've bound using the session key we can close the netlog pipe. */
+ cli_rpc_pipe_close(netlogon_pipe);
+
+ return result;
+}
+
+#ifdef HAVE_KRB5
+
+/****************************************************************************
+ Free function for the kerberos spcific data.
+ ****************************************************************************/
+
+static void kerberos_auth_struct_free(struct cli_pipe_auth_data *a)
+{
+ data_blob_free(&a->a_u.kerberos_auth->session_key);
+}
+
+#endif
+
+/****************************************************************************
+ Open a named pipe to an SMB server and bind using krb5 (bind type 16).
+ The idea is this can be called with service_princ, username and password all
+ NULL so long as the caller has a TGT.
+ ****************************************************************************/
+
+struct rpc_pipe_client *cli_rpc_pipe_open_krb5(struct cli_state *cli,
+ int pipe_idx,
+ enum pipe_auth_level auth_level,
+ const char *service_princ,
+ const char *username,
+ const char *password,
+ NTSTATUS *perr)
+{
+#ifdef HAVE_KRB5
+ struct rpc_pipe_client *result;
+
+ result = cli_rpc_pipe_open(cli, pipe_idx, perr);
+ if (result == NULL) {
+ return NULL;
+ }
+
+ /* Default service principal is "host/server@realm" */
+ if (!service_princ) {
+ service_princ = talloc_asprintf(result->mem_ctx, "host/%s@%s",
+ cli->desthost, lp_realm() );
+ if (!service_princ) {
+ cli_rpc_pipe_close(result);
+ return NULL;
+ }
+ }
+
+ /* Only get a new TGT if username/password are given. */
+ if (username && password) {
+ int ret = kerberos_kinit_password(username, password, 0, NULL, NULL);
+ if (ret) {
+ cli_rpc_pipe_close(result);
+ return NULL;
+ }
+ }
+
+ result->auth.a_u.kerberos_auth = TALLOC_ZERO_P(cli->mem_ctx, struct kerberos_auth_struct);
+ if (!result->auth.a_u.kerberos_auth) {
+ cli_rpc_pipe_close(result);
+ *perr = NT_STATUS_NO_MEMORY;
+ return NULL;
+ }
+
+ result->auth.a_u.kerberos_auth->service_principal = service_princ;
+ result->auth.cli_auth_data_free_func = kerberos_auth_struct_free;
+
+ *perr = rpc_pipe_bind(result, PIPE_AUTH_TYPE_KRB5, auth_level);
+ if (!NT_STATUS_IS_OK(*perr)) {
+ DEBUG(0, ("cli_rpc_pipe_open_krb5: cli_rpc_pipe_bind failed with error %s\n",
+ nt_errstr(*perr) ));
+ cli_rpc_pipe_close(result);
+ return NULL;
+ }
+
+ return result;
+#else
+ DEBUG(0,("cli_rpc_pipe_open_krb5: kerberos not found at compile time.\n"));
+ return NULL;
+#endif
+}
+
+#if 0 /* Moved to libsmb/clientgen.c */
+/****************************************************************************
+ External interface.
+ Close an open named pipe over SMB. Free any authentication data.
+ ****************************************************************************/
+
+void cli_rpc_pipe_close(struct rpc_pipe_client *cli)
+{
+ if (!cli_close(cli->cli, cli->fnum)) {
+ DEBUG(0,("cli_rpc_pipe_close: cli_close failed on pipe %s "
+ "to machine %s. Error was %s\n",
+ cli->pipe_name),
+ cli->cli->desthost,
+ cli_errstr(cli->cli)));
+ }
+
+ if (cli->auth.cli_auth_data_free_func) {
+ (*cli->auth.cli_auth_data_free_func)(&cli->auth);
+ }
+ DEBUG(10,("cli_rpc_pipe_close: closed pipe %s to machine %s\n",
+ cli->pipe_name, cli->cli->desthost ));
+
+ DLIST_REMOVE(cli->cli->pipe_list, cli);
+ talloc_destroy(cli->mem_ctx);
+}
+#endif
projects / samba / blobdiff