}
/*******************************************************************
- Generate the next PDU to be returned from the data in p->rdata.
Handle NTLMSSP.
********************************************************************/
-static bool create_next_pdu_ntlmssp(pipes_struct *p)
+static bool add_ntlmssp_auth(pipes_struct *p)
{
- DATA_BLOB hdr;
- uint8_t hdr_flags;
- RPC_HDR_RESP hdr_resp;
- uint32 ss_padding_len = 0;
- uint32 data_space_available;
- uint32 data_len_left;
- uint32 data_len;
+ enum dcerpc_AuthLevel auth_level = p->auth.auth_level;
+ DATA_BLOB auth_blob = data_blob_null;
NTSTATUS status;
- DATA_BLOB auth_blob;
- RPC_HDR_AUTH auth_info;
- uint8 auth_type, auth_level;
- struct auth_ntlmssp_state *a = p->auth.a_u.auth_ntlmssp_state;
- TALLOC_CTX *frame;
-
- /*
- * If we're in the fault state, keep returning fault PDU's until
- * the pipe gets closed. JRA.
- */
-
- if(p->fault_state) {
- setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
- return True;
- }
-
- memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
-
- /* Set up rpc header flags. */
- if (p->out_data.data_sent_length == 0) {
- hdr_flags = DCERPC_PFC_FLAG_FIRST;
- } else {
- hdr_flags = 0;
- }
-
- /*
- * Work out how much we can fit in a single PDU.
- */
-
- data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
-
- /*
- * Ensure there really is data left to send.
- */
-
- if(!data_len_left) {
- DEBUG(0,("create_next_pdu_ntlmssp: no data left to send !\n"));
- return False;
- }
-
- /* Space available - not including padding. */
- data_space_available = RPC_MAX_PDU_FRAG_LEN - RPC_HEADER_LEN -
- RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - NTLMSSP_SIG_SIZE;
- /*
- * The amount we send is the minimum of the available
- * space and the amount left to send.
+ /* FIXME: Is this right ?
+ * Keeping only to avoid changing semantics during refactoring
+ * --simo
*/
-
- data_len = MIN(data_len_left, data_space_available);
-
- /* Work out any padding alignment requirements. */
- if ((RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len) % SERVER_NDR_PADDING_SIZE) {
- ss_padding_len = SERVER_NDR_PADDING_SIZE -
- ((RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len) % SERVER_NDR_PADDING_SIZE);
- DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
- ss_padding_len ));
- /* If we're over filling the packet, we need to make space
- * for the padding at the end of the data. */
- if (data_len + ss_padding_len > data_space_available) {
- data_len -= SERVER_NDR_PADDING_SIZE;
- }
+ if (auth_level != DCERPC_AUTH_LEVEL_PRIVACY) {
+ auth_level = DCERPC_AUTH_LEVEL_INTEGRITY;
}
- /*
- * Set up the alloc hint. This should be the data left to
- * send.
- */
+ /* Generate the auth blob. */
+ switch (auth_level) {
+ case DCERPC_AUTH_LEVEL_PRIVACY:
+ /* Data portion is encrypted. */
+ status = auth_ntlmssp_seal_packet(
+ p->auth.a_u.auth_ntlmssp_state,
+ (TALLOC_CTX *)p->out_data.frag.data,
+ &p->out_data.frag.data[DCERPC_RESPONSE_LENGTH],
+ p->out_data.frag.length
+ - DCERPC_RESPONSE_LENGTH
+ - DCERPC_AUTH_TRAILER_LENGTH,
+ p->out_data.frag.data,
+ p->out_data.frag.length,
+ &auth_blob);
+ break;
- hdr_resp.alloc_hint = data_len_left;
+ case DCERPC_AUTH_LEVEL_INTEGRITY:
+ /* Data is signed. */
+ status = auth_ntlmssp_sign_packet(
+ p->auth.a_u.auth_ntlmssp_state,
+ (TALLOC_CTX *)p->out_data.frag.data,
+ &p->out_data.frag.data[DCERPC_RESPONSE_LENGTH],
+ p->out_data.frag.length
+ - DCERPC_RESPONSE_LENGTH
+ - DCERPC_AUTH_TRAILER_LENGTH,
+ p->out_data.frag.data,
+ p->out_data.frag.length,
+ &auth_blob);
+ break;
- /*
- * Work out if this PDU will be the last.
- */
- if (p->out_data.data_sent_length + data_len >=
- prs_offset(&p->out_data.rdata)) {
- hdr_flags |= DCERPC_PFC_FLAG_LAST;
+ default:
+ status = NT_STATUS_INTERNAL_ERROR;
+ return false;
}
- /*
- * Init the parse struct to point at the outgoing
- * data.
- */
- prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
-
- status = dcerpc_push_ncacn_packet_header(
- prs_get_mem_context(&p->out_data.frag),
- DCERPC_PKT_RESPONSE,
- hdr_flags,
- RPC_HEADER_LEN + RPC_HDR_RESP_LEN +
- data_len + ss_padding_len +
- RPC_HDR_AUTH_LEN + NTLMSSP_SIG_SIZE,
- NTLMSSP_SIG_SIZE,
- p->hdr.call_id,
- &hdr);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Failed to marshall RPC Header.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
- }
-
- /* Store the header in the data stream. */
- if (!prs_copy_data_in(&p->out_data.frag,
- (char *)hdr.data, hdr.length)) {
- DEBUG(0, ("Out of memory.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
+ DEBUG(0, ("Failed to add NTLMSSP auth blob: %s\n",
+ nt_errstr(status)));
+ data_blob_free(&p->out_data.frag);
+ return false;
}
- if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
- DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
- prs_mem_free(&p->out_data.frag);
+ /* Finally append the auth blob. */
+ if (!data_blob_append(p->mem_ctx, &p->out_data.frag,
+ auth_blob.data, auth_blob.length)) {
+ DEBUG(0, ("Failed to add %u bytes auth blob.\n",
+ (unsigned int)auth_blob.length));
+ data_blob_free(&p->out_data.frag);
return False;
}
+ data_blob_free(&auth_blob);
- /* Copy the data into the PDU. */
+ return true;
+}
- if(!prs_append_some_prs_data(&p->out_data.frag, &p->out_data.rdata,
- p->out_data.data_sent_length, data_len)) {
- DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len));
- prs_mem_free(&p->out_data.frag);
- return False;
- }
+/*******************************************************************
+ Append a schannel authenticated fragment.
+ ********************************************************************/
- /* Copy the sign/seal padding data. */
- if (ss_padding_len) {
- char pad[SERVER_NDR_PADDING_SIZE];
+static bool add_schannel_auth(pipes_struct *p)
+{
+ DATA_BLOB auth_blob = data_blob_null;
+ NTSTATUS status;
- memset(pad, '\0', SERVER_NDR_PADDING_SIZE);
- if (!prs_copy_data_in(&p->out_data.frag, pad,
- ss_padding_len)) {
- DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes of pad data.\n",
- (unsigned int)ss_padding_len));
- prs_mem_free(&p->out_data.frag);
- return False;
- }
- }
+ /* Schannel processing. */
+ switch (p->auth.auth_level) {
+ case DCERPC_AUTH_LEVEL_PRIVACY:
+ status = netsec_outgoing_packet(
+ p->auth.a_u.schannel_auth,
+ (TALLOC_CTX *)p->out_data.frag.data,
+ true,
+ &p->out_data.frag.data[DCERPC_RESPONSE_LENGTH],
+ p->out_data.frag.length
+ - DCERPC_RESPONSE_LENGTH
+ - DCERPC_AUTH_TRAILER_LENGTH,
+ &auth_blob);
+ break;
+ case DCERPC_AUTH_LEVEL_INTEGRITY:
+ status = netsec_outgoing_packet(
+ p->auth.a_u.schannel_auth,
+ (TALLOC_CTX *)p->out_data.frag.data,
+ false,
+ &p->out_data.frag.data[DCERPC_RESPONSE_LENGTH],
+ p->out_data.frag.length
+ - DCERPC_RESPONSE_LENGTH
+ - DCERPC_AUTH_TRAILER_LENGTH,
+ &auth_blob);
+ break;
- /* Now write out the auth header and null blob. */
- if (p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) {
- auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
- } else {
- auth_type = DCERPC_AUTH_TYPE_SPNEGO;
- }
- if (p->auth.auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
- auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
- } else {
- auth_level = DCERPC_AUTH_LEVEL_INTEGRITY;
+ default:
+ status = NT_STATUS_INTERNAL_ERROR;
+ break;
}
- init_rpc_hdr_auth(&auth_info, auth_type, auth_level, ss_padding_len, 1 /* context id. */);
-
- if (!smb_io_rpc_hdr_auth("hdr_auth", &auth_info,
- &p->out_data.frag, 0)) {
- DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to add SCHANNEL auth blob: %s\n",
+ nt_errstr(status)));
+ data_blob_free(&p->out_data.frag);
+ return false;
}
- /* Generate the sign blob. */
-
- frame = talloc_stackframe();
- switch (p->auth.auth_level) {
- case DCERPC_AUTH_LEVEL_PRIVACY:
- /* Data portion is encrypted. */
- status = auth_ntlmssp_seal_packet(
- a, frame,
- (uint8_t *)prs_data_p(&p->out_data.frag)
- + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
- data_len + ss_padding_len,
- (unsigned char *)prs_data_p(&p->out_data.frag),
- (size_t)prs_offset(&p->out_data.frag),
- &auth_blob);
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(frame);
- prs_mem_free(&p->out_data.frag);
- return False;
- }
- break;
- case DCERPC_AUTH_LEVEL_INTEGRITY:
- /* Data is signed. */
- status = auth_ntlmssp_sign_packet(
- a, frame,
- (unsigned char *)prs_data_p(&p->out_data.frag)
- + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
- data_len + ss_padding_len,
- (unsigned char *)prs_data_p(&p->out_data.frag),
- (size_t)prs_offset(&p->out_data.frag),
- &auth_blob);
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(frame);
- prs_mem_free(&p->out_data.frag);
- return False;
- }
- break;
- default:
- talloc_free(frame);
- prs_mem_free(&p->out_data.frag);
- return False;
+ if (DEBUGLEVEL >= 10) {
+ dump_NL_AUTH_SIGNATURE(talloc_tos(), &auth_blob);
}
- /* Append the auth blob. */
- if (!prs_copy_data_in(&p->out_data.frag, (char *)auth_blob.data,
- NTLMSSP_SIG_SIZE)) {
- DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
- (unsigned int)NTLMSSP_SIG_SIZE));
- talloc_free(frame);
- prs_mem_free(&p->out_data.frag);
- return False;
+ if (!data_blob_append(p->mem_ctx, &p->out_data.frag,
+ auth_blob.data, auth_blob.length)) {
+ DEBUG(0, ("Failed to add %u bytes auth blob.\n",
+ (unsigned int)auth_blob.length));
+ data_blob_free(&p->out_data.frag);
+ return false;
}
- talloc_free(frame);
-
- /*
- * Setup the counts for this PDU.
- */
-
- p->out_data.data_sent_length += data_len;
- p->out_data.current_pdu_sent = 0;
+ data_blob_free(&auth_blob);
- return True;
+ return true;
}
/*******************************************************************
- Generate the next PDU to be returned from the data in p->rdata.
- Return an schannel authenticated fragment.
- ********************************************************************/
+ Generate the next PDU to be returned from the data.
+********************************************************************/
-static bool create_next_pdu_schannel(pipes_struct *p)
+static bool create_next_packet(pipes_struct *p,
+ enum dcerpc_AuthType auth_type,
+ enum dcerpc_AuthLevel auth_level,
+ size_t auth_length)
{
- DATA_BLOB hdr;
- uint8_t hdr_flags;
- RPC_HDR_RESP hdr_resp;
- uint32 ss_padding_len = 0;
- uint32 data_len;
- uint32 data_space_available;
- uint32 data_len_left;
- uint32 data_pos;
+ union dcerpc_payload u;
+ uint8_t pfc_flags;
+ size_t data_len_left;
+ size_t data_len;
+ size_t max_len;
+ size_t pad_len = 0;
NTSTATUS status;
- /*
- * If we're in the fault state, keep returning fault PDU's until
- * the pipe gets closed. JRA.
- */
+ ZERO_STRUCT(u.response);
- if(p->fault_state) {
- setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
- return True;
- }
-
- memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
-
- /* Set up rpc header flags. */
+ /* Set up rpc packet pfc flags. */
if (p->out_data.data_sent_length == 0) {
- hdr_flags = DCERPC_PFC_FLAG_FIRST;
+ pfc_flags = DCERPC_PFC_FLAG_FIRST;
} else {
- hdr_flags = 0;
- }
-
- /*
- * Work out how much we can fit in a single PDU.
- */
-
- data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
-
- /*
- * Ensure there really is data left to send.
- */
-
- if(!data_len_left) {
- DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
- return False;
+ pfc_flags = 0;
}
- /* Space available - not including padding. */
- data_space_available = RPC_MAX_PDU_FRAG_LEN - RPC_HEADER_LEN
- - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN
- - RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
-
- /*
- * The amount we send is the minimum of the available
- * space and the amount left to send.
- */
+ /* Work out how much we can fit in a single PDU. */
+ data_len_left = p->out_data.rdata.length -
+ p->out_data.data_sent_length;
- data_len = MIN(data_len_left, data_space_available);
-
- /* Work out any padding alignment requirements. */
- if ((RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len) % SERVER_NDR_PADDING_SIZE) {
- ss_padding_len = SERVER_NDR_PADDING_SIZE -
- ((RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len) % SERVER_NDR_PADDING_SIZE);
- DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
- ss_padding_len ));
- /* If we're over filling the packet, we need to make space
- * for the padding at the end of the data. */
- if (data_len + ss_padding_len > data_space_available) {
- data_len -= SERVER_NDR_PADDING_SIZE;
- }
+ /* Ensure there really is data left to send. */
+ if (!data_len_left) {
+ DEBUG(0, ("No data left to send !\n"));
+ return false;
}
- /*
- * Set up the alloc hint. This should be the data left to
- * send.
- */
-
- hdr_resp.alloc_hint = data_len_left;
-
- /*
- * Work out if this PDU will be the last.
- */
- if (p->out_data.data_sent_length + data_len >=
- prs_offset(&p->out_data.rdata)) {
- hdr_flags |= DCERPC_PFC_FLAG_LAST;
+ /* Max space available - not including padding. */
+ if (auth_length) {
+ max_len = RPC_MAX_PDU_FRAG_LEN
+ - DCERPC_RESPONSE_LENGTH
+ - DCERPC_AUTH_TRAILER_LENGTH
+ - auth_length;
+ } else {
+ max_len = RPC_MAX_PDU_FRAG_LEN - DCERPC_RESPONSE_LENGTH;
}
/*
- * Init the parse struct to point at the outgoing
- * data.
+ * The amount we send is the minimum of the max_len
+ * and the amount left to send.
*/
- prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
-
- status = dcerpc_push_ncacn_packet_header(
- prs_get_mem_context(&p->out_data.frag),
- DCERPC_PKT_RESPONSE,
- hdr_flags,
- RPC_HEADER_LEN + RPC_HDR_RESP_LEN +
- data_len + ss_padding_len +
- RPC_HDR_AUTH_LEN +
- RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
- RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
- p->hdr.call_id,
- &hdr);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Failed to marshall RPC Header.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
+ data_len = MIN(data_len_left, max_len);
+
+ if (auth_length) {
+ /* Work out any padding alignment requirements. */
+ pad_len = (DCERPC_RESPONSE_LENGTH + data_len) %
+ SERVER_NDR_PADDING_SIZE;
+ if (pad_len) {
+ pad_len = SERVER_NDR_PADDING_SIZE - pad_len;
+ DEBUG(10, ("Padding size is: %d\n", (int)pad_len));
+ /* If we're over filling the packet, we need to make
+ * space for the padding at the end of the data. */
+ if (data_len + pad_len > max_len) {
+ data_len -= SERVER_NDR_PADDING_SIZE;
+ }
+ }
}
- /* Store the header in the data stream. */
- if (!prs_copy_data_in(&p->out_data.frag,
- (char *)hdr.data, hdr.length)) {
- DEBUG(0, ("Out of memory.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
- }
+ /* Set up the alloc hint. This should be the data left to send. */
+ u.response.alloc_hint = data_len_left;
- if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
- DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
+ /* Work out if this PDU will be the last. */
+ if (p->out_data.data_sent_length
+ + data_len >= p->out_data.rdata.length) {
+ pfc_flags |= DCERPC_PFC_FLAG_LAST;
}
- /* Store the current offset. */
- data_pos = prs_offset(&p->out_data.frag);
-
- /* Copy the data into the PDU. */
+ /* Prepare data to be NDR encoded. */
+ u.response.stub_and_verifier =
+ data_blob_const(p->out_data.rdata.data +
+ p->out_data.data_sent_length, data_len);
- if(!prs_append_some_prs_data(&p->out_data.frag, &p->out_data.rdata,
- p->out_data.data_sent_length, data_len)) {
- DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len));
- prs_mem_free(&p->out_data.frag);
- return False;
+ /* Store the packet in the data stream. */
+ status = dcerpc_push_ncacn_packet(p->mem_ctx,
+ DCERPC_PKT_RESPONSE,
+ pfc_flags,
+ auth_length,
+ p->call_id,
+ &u,
+ &p->out_data.frag);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to marshall RPC Packet.\n"));
+ return false;
}
- /* Copy the sign/seal padding data. */
- if (ss_padding_len) {
- char pad[SERVER_NDR_PADDING_SIZE];
- memset(pad, '\0', SERVER_NDR_PADDING_SIZE);
- if (!prs_copy_data_in(&p->out_data.frag, pad,
- ss_padding_len)) {
- DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len));
- prs_mem_free(&p->out_data.frag);
- return False;
- }
- }
+ if (auth_length) {
+ DATA_BLOB empty = data_blob_null;
+ DATA_BLOB auth_hdr;
- {
- /*
- * Schannel processing.
- */
- RPC_HDR_AUTH auth_info;
- DATA_BLOB blob;
- uint8_t *data;
-
- /* Check it's the type of reply we were expecting to decode */
-
- init_rpc_hdr_auth(&auth_info,
- DCERPC_AUTH_TYPE_SCHANNEL,
- p->auth.auth_level == DCERPC_AUTH_LEVEL_PRIVACY ?
- DCERPC_AUTH_LEVEL_PRIVACY : DCERPC_AUTH_LEVEL_INTEGRITY,
- ss_padding_len, 1);
-
- if (!smb_io_rpc_hdr_auth("hdr_auth", &auth_info,
- &p->out_data.frag, 0)) {
- DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
- }
+ /* Set the proper length on the pdu, including padding.
+ * Only needed if an auth trailer will be appended. */
+ dcerpc_set_frag_length(&p->out_data.frag,
+ p->out_data.frag.length
+ + pad_len
+ + DCERPC_AUTH_TRAILER_LENGTH
+ + auth_length);
- data = (uint8_t *)prs_data_p(&p->out_data.frag) + data_pos;
+ if (pad_len) {
+ size_t offset = p->out_data.frag.length;
- switch (p->auth.auth_level) {
- case DCERPC_AUTH_LEVEL_PRIVACY:
- status = netsec_outgoing_packet(p->auth.a_u.schannel_auth,
- talloc_tos(),
- true,
- data,
- data_len + ss_padding_len,
- &blob);
- break;
- case DCERPC_AUTH_LEVEL_INTEGRITY:
- status = netsec_outgoing_packet(p->auth.a_u.schannel_auth,
- talloc_tos(),
- false,
- data,
- data_len + ss_padding_len,
- &blob);
- break;
- default:
- status = NT_STATUS_INTERNAL_ERROR;
- break;
+ if (!data_blob_realloc(p->mem_ctx,
+ &p->out_data.frag,
+ offset + pad_len)) {
+ DEBUG(0, ("Failed to add padding!\n"));
+ data_blob_free(&p->out_data.frag);
+ return false;
+ }
+ memset(&p->out_data.frag.data[offset], '\0', pad_len);
}
+ /* auth blob is intentionally empty,
+ * it will be appended later */
+ status = dcerpc_push_dcerpc_auth(p->out_data.frag.data,
+ auth_type,
+ auth_level,
+ pad_len,
+ 1, /* context id. */
+ &empty,
+ &auth_hdr);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("create_next_pdu_schannel: failed to process packet: %s\n",
- nt_errstr(status)));
- prs_mem_free(&p->out_data.frag);
+ DEBUG(0, ("Failed to marshall RPC Auth.\n"));
return false;
}
- /* Finally marshall the blob. */
-
- if (DEBUGLEVEL >= 10) {
- dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob);
- }
-
- if (!prs_copy_data_in(&p->out_data.frag, (const char *)blob.data, blob.length)) {
- prs_mem_free(&p->out_data.frag);
+ /* Store auth header in the data stream. */
+ if (!data_blob_append(p->mem_ctx, &p->out_data.frag,
+ auth_hdr.data, auth_hdr.length)) {
+ DEBUG(0, ("Out of memory.\n"));
+ data_blob_free(&p->out_data.frag);
return false;
}
+ data_blob_free(&auth_hdr);
}
- /*
- * Setup the counts for this PDU.
- */
-
+ /* Setup the counts for this PDU. */
p->out_data.data_sent_length += data_len;
p->out_data.current_pdu_sent = 0;
-
- return True;
+ return true;
}
/*******************************************************************
Generate the next PDU to be returned from the data in p->rdata.
- No authentication done.
********************************************************************/
-static bool create_next_pdu_noauth(pipes_struct *p)
+bool create_next_pdu(pipes_struct *p)
{
- DATA_BLOB hdr;
- uint8_t hdr_flags;
- NTSTATUS status;
- RPC_HDR_RESP hdr_resp;
- uint32 data_len;
- uint32 data_space_available;
- uint32 data_len_left;
+ enum dcerpc_AuthType auth_type =
+ map_pipe_auth_type_to_rpc_auth_type(p->auth.auth_type);
/*
* If we're in the fault state, keep returning fault PDU's until
* the pipe gets closed. JRA.
*/
-
- if(p->fault_state) {
+ if (p->fault_state) {
setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
- return True;
- }
-
- memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
-
- /* Set up rpc header flags. */
- if (p->out_data.data_sent_length == 0) {
- hdr_flags = DCERPC_PFC_FLAG_FIRST;
- } else {
- hdr_flags = 0;
- }
-
- /*
- * Work out how much we can fit in a single PDU.
- */
-
- data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
-
- /*
- * Ensure there really is data left to send.
- */
-
- if(!data_len_left) {
- DEBUG(0,("create_next_pdu_noath: no data left to send !\n"));
- return False;
- }
-
- data_space_available = RPC_MAX_PDU_FRAG_LEN - RPC_HEADER_LEN
- - RPC_HDR_RESP_LEN;
-
- /*
- * The amount we send is the minimum of the available
- * space and the amount left to send.
- */
-
- data_len = MIN(data_len_left, data_space_available);
-
- /*
- * Set up the alloc hint. This should be the data left to
- * send.
- */
-
- hdr_resp.alloc_hint = data_len_left;
-
- /*
- * Work out if this PDU will be the last.
- */
- if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
- hdr_flags |= DCERPC_PFC_FLAG_LAST;
- }
-
- /*
- * Init the parse struct to point at the outgoing
- * data.
- */
- prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
-
- status = dcerpc_push_ncacn_packet_header(
- prs_get_mem_context(&p->out_data.frag),
- DCERPC_PKT_RESPONSE,
- hdr_flags,
- RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len,
- 0,
- p->hdr.call_id,
- &hdr);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Failed to marshall RPC Header.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
- }
-
- /* Store the header in the data stream. */
- if (!prs_copy_data_in(&p->out_data.frag,
- (char *)hdr.data, hdr.length)) {
- DEBUG(0, ("Out of memory.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
- }
-
- if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
- DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
- }
-
- /* Copy the data into the PDU. */
-
- if(!prs_append_some_prs_data(&p->out_data.frag, &p->out_data.rdata,
- p->out_data.data_sent_length, data_len)) {
- DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len));
- prs_mem_free(&p->out_data.frag);
- return False;
+ return true;
}
- /*
- * Setup the counts for this PDU.
- */
-
- p->out_data.data_sent_length += data_len;
- p->out_data.current_pdu_sent = 0;
+ switch (p->auth.auth_level) {
+ case DCERPC_AUTH_LEVEL_NONE:
+ case DCERPC_AUTH_LEVEL_CONNECT:
+ /* This is incorrect for auth level connect. Fixme. JRA */
- return True;
-}
+ /* No authentication done. */
+ return create_next_packet(p, auth_type,
+ p->auth.auth_level, 0);
-/*******************************************************************
- Generate the next PDU to be returned from the data in p->rdata.
-********************************************************************/
+ case DCERPC_AUTH_LEVEL_CALL:
+ case DCERPC_AUTH_LEVEL_PACKET:
+ case DCERPC_AUTH_LEVEL_INTEGRITY:
+ case DCERPC_AUTH_LEVEL_PRIVACY:
-bool create_next_pdu(pipes_struct *p)
-{
- switch(p->auth.auth_level) {
- case DCERPC_AUTH_LEVEL_NONE:
- case DCERPC_AUTH_LEVEL_CONNECT:
- /* This is incorrect for auth level connect. Fixme. JRA */
- return create_next_pdu_noauth(p);
+ switch(p->auth.auth_type) {
+ case PIPE_AUTH_TYPE_NTLMSSP:
+ case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
+ if (!create_next_packet(p, auth_type,
+ p->auth.auth_level,
+ NTLMSSP_SIG_SIZE)) {
+ return false;
+ }
+ return add_ntlmssp_auth(p);
- default:
- switch(p->auth.auth_type) {
- case PIPE_AUTH_TYPE_NTLMSSP:
- case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
- return create_next_pdu_ntlmssp(p);
- case PIPE_AUTH_TYPE_SCHANNEL:
- return create_next_pdu_schannel(p);
- default:
- break;
+ case PIPE_AUTH_TYPE_SCHANNEL:
+ if (!create_next_packet(p, auth_type,
+ p->auth.auth_level,
+ SCHANNEL_SIG_SIZE)) {
+ return false;
}
+ return add_schannel_auth(p);
+ default:
+ break;
+ }
+ default:
+ break;
}
- DEBUG(0,("create_next_pdu: invalid internal auth level %u / type %u",
- (unsigned int)p->auth.auth_level,
- (unsigned int)p->auth.auth_type));
- return False;
+ DEBUG(0, ("Invalid internal auth level %u / type %u\n",
+ (unsigned int)p->auth.auth_level,
+ (unsigned int)p->auth.auth_type));
+ return false;
}
/*******************************************************************
TALLOC_FREE(p->server_info);
- p->server_info = auth_ntlmssp_server_info(p, a);
- if (p->server_info == NULL) {
- DEBUG(0, ("auth_ntlmssp_server_info failed to obtain the server info for authenticated user\n"));
+ status = auth_ntlmssp_server_info(p, a, &p->server_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("auth_ntlmssp_server_info failed to obtain the server info for authenticated user: %s\n",
+ nt_errstr(status)));
return false;
}
This is the "stage3" NTLMSSP response after a bind request and reply.
*******************************************************************/
-bool api_pipe_bind_auth3(pipes_struct *p, prs_struct *rpc_in_p)
+bool api_pipe_bind_auth3(pipes_struct *p, struct ncacn_packet *pkt)
{
struct dcerpc_auth auth_info;
- uint32 pad = 0;
- DATA_BLOB auth_blob;
- uint32_t auth_len = p->hdr.auth_len;
+ uint32_t auth_len = pkt->auth_length;
NTSTATUS status;
DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__));
goto err;
}
- /* 4 bytes padding. */
- if (!prs_uint32("pad", rpc_in_p, 0, &pad)) {
- DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
- goto err;
- }
-
/* Ensure there's enough data for an authenticated request. */
if (RPC_HEADER_LEN + RPC_HDR_AUTH_LEN + auth_len >
- p->hdr.frag_len) {
+ pkt->frag_length) {
DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len "
"%u is too large.\n",
(unsigned int)auth_len ));
* Decode the authentication verifier response.
*/
- /* Pull the auth header and the following data into a blob. */
- /* NB. The offset of the auth_header is relative to the *end*
- * of the packet, not the start. Also, the length of the
- * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
- * as the RPC header isn't included in rpc_in_p. */
- if(!prs_set_offset(rpc_in_p,
- p->hdr.frag_len - RPC_HEADER_LEN -
- RPC_HDR_AUTH_LEN - auth_len)) {
- DEBUG(0,("api_pipe_bind_auth3: cannot move "
- "offset to %u.\n",
- (unsigned int)(p->hdr.frag_len -
- RPC_HDR_AUTH_LEN - auth_len) ));
- goto err;
- }
-
- auth_blob = data_blob_const(prs_data_p(rpc_in_p)
- + prs_offset(rpc_in_p),
- prs_data_size(rpc_in_p)
- - prs_offset(rpc_in_p));
-
- status = dcerpc_pull_dcerpc_auth(prs_get_mem_context(rpc_in_p),
- &auth_blob, &auth_info);
+ status = dcerpc_pull_dcerpc_auth(pkt,
+ &pkt->u.auth3.auth_info,
+ &auth_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to unmarshall dcerpc_auth.\n"));
goto err;
Marshall a bind_nak pdu.
*******************************************************************/
-static bool setup_bind_nak(pipes_struct *p)
+static bool setup_bind_nak(pipes_struct *p, struct ncacn_packet *pkt)
{
NTSTATUS status;
union dcerpc_payload u;
- DATA_BLOB blob;
/* Free any memory in the current return data buffer. */
- prs_mem_free(&p->out_data.rdata);
-
- /*
- * Marshall directly into the outgoing PDU space. We
- * must do this as we need to set to the bind response
- * header and are never sending more than one PDU here.
- */
-
- prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
+ data_blob_free(&p->out_data.rdata);
/*
* Initialize a bind_nak header.
u.bind_nak.reject_reason = 0;
+ /*
+ * Marshall directly into the outgoing PDU space. We
+ * must do this as we need to set to the bind response
+ * header and are never sending more than one PDU here.
+ */
+
status = dcerpc_push_ncacn_packet(p->mem_ctx,
DCERPC_PKT_BIND_NAK,
DCERPC_PFC_FLAG_FIRST |
DCERPC_PFC_FLAG_LAST,
0,
- p->hdr.call_id,
- u,
- &blob);
+ pkt->call_id,
+ &u,
+ &p->out_data.frag);
if (!NT_STATUS_IS_OK(status)) {
- prs_mem_free(&p->out_data.frag);
- return False;
- }
-
- if (!prs_copy_data_in(&p->out_data.frag,
- (char *)blob.data, blob.length)) {
- prs_mem_free(&p->out_data.frag);
return False;
}
{
NTSTATUS status;
union dcerpc_payload u;
- DATA_BLOB blob;
/* Free any memory in the current return data buffer. */
- prs_mem_free(&p->out_data.rdata);
-
- /*
- * Marshall directly into the outgoing PDU space. We
- * must do this as we need to set to the bind response
- * header and are never sending more than one PDU here.
- */
-
- prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
+ data_blob_free(&p->out_data.rdata);
/*
* Initialize a fault header.
u.fault.status = NT_STATUS_V(fault_status);
u.fault._pad = data_blob_talloc_zero(p->mem_ctx, 4);
+ /*
+ * Marshall directly into the outgoing PDU space. We
+ * must do this as we need to set to the bind response
+ * header and are never sending more than one PDU here.
+ */
+
status = dcerpc_push_ncacn_packet(p->mem_ctx,
DCERPC_PKT_FAULT,
DCERPC_PFC_FLAG_FIRST |
DCERPC_PFC_FLAG_LAST |
DCERPC_PFC_FLAG_DID_NOT_EXECUTE,
0,
- p->hdr.call_id,
- u,
- &blob);
+ p->call_id,
+ &u,
+ &p->out_data.frag);
if (!NT_STATUS_IS_OK(status)) {
- prs_mem_free(&p->out_data.frag);
- return False;
- }
-
- if (!prs_copy_data_in(&p->out_data.frag,
- (char *)blob.data, blob.length)) {
- prs_mem_free(&p->out_data.frag);
return False;
}
*******************************************************************/
static bool pipe_spnego_auth_bind_kerberos(pipes_struct *p,
- prs_struct *rpc_in_p,
+ TALLOC_CTX *mem_ctx,
struct dcerpc_auth *pauth_info,
DATA_BLOB *psecblob,
- prs_struct *pout_auth)
+ DATA_BLOB *response)
{
return False;
}
*******************************************************************/
static bool pipe_spnego_auth_bind_negotiate(pipes_struct *p,
- prs_struct *rpc_in_p,
- uint32_t ss_padding_len,
+ TALLOC_CTX *mem_ctx,
struct dcerpc_auth *pauth_info,
- prs_struct *pout_auth)
+ DATA_BLOB *response)
{
- DATA_BLOB blob;
DATA_BLOB secblob;
- DATA_BLOB response;
DATA_BLOB chal;
char *OIDs[ASN1_MAX_OIDS];
int i;
ZERO_STRUCT(secblob);
ZERO_STRUCT(chal);
- ZERO_STRUCT(response);
if (pauth_info->credentials.data[0] != ASN1_APPLICATION(0)) {
goto err;
DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));
if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || USE_KERBEROS_KEYTAB) ) {
- bool ret = pipe_spnego_auth_bind_kerberos(p, rpc_in_p, pauth_info, &secblob, pout_auth);
+ bool ret;
+ ret = pipe_spnego_auth_bind_kerberos(p, mem_ctx, pauth_info,
+ &secblob, response);
data_blob_free(&secblob);
return ret;
}
}
/* Generate the response blob we need for step 2 of the bind. */
- response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
+ *response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
} else {
/*
* SPNEGO negotiate down to NTLMSSP. The subsequent
* code to process follow-up packets is not complete
* yet. JRA.
*/
- response = spnego_gen_auth_response(NULL,
+ *response = spnego_gen_auth_response(NULL,
NT_STATUS_MORE_PROCESSING_REQUIRED,
OID_NTLMSSP);
}
- /* auth_pad_len will be handled by the caller */
+ /* Make sure data is bound to the memctx, to be freed the caller */
+ talloc_steal(mem_ctx, response->data);
- status = dcerpc_push_dcerpc_auth(prs_get_mem_context(pout_auth),
- DCERPC_AUTH_TYPE_SPNEGO,
- pauth_info->auth_level,
- ss_padding_len,
- 1, /* auth_context_id */
- &response,
- &blob);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Marshalling of dcerpc_auth failed.\n"));
- goto err;
- }
-
- /* Copy the blob into the pout_auth parse struct */
- if (!prs_copy_data_in(pout_auth, (char *)blob.data, blob.length)) {
- DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
- goto err;
- }
+ /* auth_pad_len will be handled by the caller */
p->auth.a_u.auth_ntlmssp_state = a;
p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
data_blob_free(&secblob);
data_blob_free(&chal);
- data_blob_free(&response);
/* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
return True;
data_blob_free(&secblob);
data_blob_free(&chal);
- data_blob_free(&response);
p->auth.a_u.auth_ntlmssp_state = NULL;
Handle the second part of a SPNEGO bind auth.
*******************************************************************/
-static bool pipe_spnego_auth_bind_continue(pipes_struct *p, prs_struct *rpc_in_p,
- uint32_t ss_padding_len,
- RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
+static bool pipe_spnego_auth_bind_continue(pipes_struct *p,
+ TALLOC_CTX *mem_ctx,
+ struct dcerpc_auth *pauth_info,
+ DATA_BLOB *response)
{
- RPC_HDR_AUTH auth_info;
- DATA_BLOB spnego_blob;
DATA_BLOB auth_blob;
DATA_BLOB auth_reply;
- DATA_BLOB response;
struct auth_ntlmssp_state *a = p->auth.a_u.auth_ntlmssp_state;
- ZERO_STRUCT(spnego_blob);
ZERO_STRUCT(auth_blob);
ZERO_STRUCT(auth_reply);
- ZERO_STRUCT(response);
/*
* NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
goto err;
}
- /* Grab the SPNEGO blob. */
- spnego_blob = data_blob(NULL,p->hdr.auth_len);
-
- if (!prs_copy_data_out((char *)spnego_blob.data, rpc_in_p, p->hdr.auth_len)) {
- DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
- (unsigned int)p->hdr.auth_len ));
- goto err;
- }
-
- if (spnego_blob.data[0] != ASN1_CONTEXT(1)) {
+ if (pauth_info->credentials.data[0] != ASN1_CONTEXT(1)) {
DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
goto err;
}
- if (!spnego_parse_auth(spnego_blob, &auth_blob)) {
+ if (!spnego_parse_auth(pauth_info->credentials, &auth_blob)) {
DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
goto err;
}
goto err;
}
- data_blob_free(&spnego_blob);
data_blob_free(&auth_blob);
/* Generate the spnego "accept completed" blob - no incoming data. */
- response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);
+ *response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);
- /* FIXME - add auth_pad_len here ! */
-
- /* Copy the blob into the pout_auth parse struct */
- init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_SPNEGO,
- pauth_info->auth_level, ss_padding_len, 1);
- if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
- DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
- goto err;
- }
-
- if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
- DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
- goto err;
- }
+ /* Make sure data is bound to the memctx, to be freed the caller */
+ talloc_steal(mem_ctx, response->data);
data_blob_free(&auth_reply);
- data_blob_free(&response);
p->pipe_bound = True;
err:
- data_blob_free(&spnego_blob);
data_blob_free(&auth_blob);
data_blob_free(&auth_reply);
- data_blob_free(&response);
free_pipe_ntlmssp_auth_data(&p->auth);
p->auth.a_u.auth_ntlmssp_state = NULL;
*******************************************************************/
static bool pipe_schannel_auth_bind(pipes_struct *p,
- prs_struct *rpc_in_p,
- uint32_t ss_padding_len,
- struct dcerpc_auth *auth_info,
- prs_struct *pout_auth)
+ TALLOC_CTX *mem_ctx,
+ struct dcerpc_auth *auth_info,
+ DATA_BLOB *response)
{
- DATA_BLOB auth_blob;
struct NL_AUTH_MESSAGE neg;
struct NL_AUTH_MESSAGE reply;
bool ret;
struct netlogon_creds_CredentialState *creds;
DATA_BLOB session_key;
enum ndr_err_code ndr_err;
- DATA_BLOB blob;
ndr_err = ndr_pull_struct_blob(
- &auth_info->credentials,
- prs_get_mem_context(pout_auth), &neg,
+ &auth_info->credentials, mem_ctx, &neg,
(ndr_pull_flags_fn_t)ndr_pull_NL_AUTH_MESSAGE);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
* this has any meaning
* here - gd */
- ndr_err = ndr_push_struct_blob(&auth_blob, talloc_tos(), &reply,
+ ndr_err = ndr_push_struct_blob(response, mem_ctx, &reply,
(ndr_push_flags_fn_t)ndr_push_NL_AUTH_MESSAGE);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
DEBUG(0,("Failed to marshall NL_AUTH_MESSAGE.\n"));
NDR_PRINT_DEBUG(NL_AUTH_MESSAGE, &reply);
}
- status = dcerpc_push_dcerpc_auth(prs_get_mem_context(pout_auth),
- DCERPC_AUTH_TYPE_SCHANNEL,
- auth_info->auth_level,
- ss_padding_len,
- 1, /* auth_context_id */
- &auth_blob,
- &blob);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Marshalling of dcerpc_auth failed.\n"));
- return False;
- }
-
- if (!prs_copy_data_in(pout_auth, (const char *)blob.data, blob.length)) {
- return false;
- }
-
DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
neg.oem_netbios_domain.a, neg.oem_netbios_computer.a));
*******************************************************************/
static bool pipe_ntlmssp_auth_bind(pipes_struct *p,
- prs_struct *rpc_in_p,
- uint32_t ss_padding_len,
- struct dcerpc_auth *auth_info,
- prs_struct *pout_auth)
+ TALLOC_CTX *mem_ctx,
+ struct dcerpc_auth *auth_info,
+ DATA_BLOB *response)
{
- DATA_BLOB blob;
- DATA_BLOB response;
NTSTATUS status;
struct auth_ntlmssp_state *a = NULL;
- ZERO_STRUCT(response);
-
if (strncmp((char *)auth_info->credentials.data, "NTLMSSP", 7) != 0) {
DEBUG(0, ("Failed to read NTLMSSP in blob\n"));
goto err;
break;
}
- status = auth_ntlmssp_update(a, auth_info->credentials, &response);
+ status = auth_ntlmssp_update(a, auth_info->credentials, response);
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
nt_errstr(status) ));
goto err;
}
- status = dcerpc_push_dcerpc_auth(prs_get_mem_context(pout_auth),
- DCERPC_AUTH_TYPE_NTLMSSP,
- auth_info->auth_level,
- ss_padding_len,
- 1, /* auth_context_id */
- &response,
- &blob);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Marshalling of dcerpc_auth failed.\n"));
- goto err;
- }
-
- /* Copy the blob into the pout_auth parse struct */
- if (!prs_copy_data_in(pout_auth, (char *)blob.data, blob.length)) {
- DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
- goto err;
- }
+ /* Make sure data is bound to the memctx, to be freed the caller */
+ talloc_steal(mem_ctx, response->data);
p->auth.a_u.auth_ntlmssp_state = a;
p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
p->auth.auth_type = PIPE_AUTH_TYPE_NTLMSSP;
- data_blob_free(&response);
-
DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
/* We can't set pipe_bound True yet - we need an DCERPC_PKT_AUTH3 response packet... */
err:
- data_blob_free(&response);
-
free_pipe_ntlmssp_auth_data(&p->auth);
p->auth.a_u.auth_ntlmssp_state = NULL;
return False;
Respond to a pipe bind request.
*******************************************************************/
-bool api_pipe_bind_req(pipes_struct *p, prs_struct *rpc_in_p)
+bool api_pipe_bind_req(pipes_struct *p, struct ncacn_packet *pkt)
{
- RPC_HDR_BA hdr_ba;
- struct dcerpc_bind rpc_bind;
- DATA_BLOB blob_rb;
struct dcerpc_auth auth_info;
- DATA_BLOB auth_blob;
uint16 assoc_gid;
- fstring ack_pipe_name;
- prs_struct out_hdr_ba;
- prs_struct out_auth;
- int auth_len = 0;
unsigned int auth_type = DCERPC_AUTH_TYPE_NONE;
- uint32_t ss_padding_len = 0;
NTSTATUS status;
struct ndr_syntax_id id;
+ union dcerpc_payload u;
+ struct dcerpc_ack_ctx bind_ack_ctx;
+ DATA_BLOB auth_resp = data_blob_null;
+ DATA_BLOB auth_blob = data_blob_null;
+ int pad_len = 0;
/* No rebinds on a bound pipe - use alter context. */
if (p->pipe_bound) {
- DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound "
- "pipe %s.\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
- return setup_bind_nak(p);
- }
-
- prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
-
- /*
- * Marshall directly into the outgoing PDU space. We
- * must do this as we need to set to the bind response
- * header and are never sending more than one PDU here.
- */
-
- /*
- * Setup the memory to marshall the ba header, and the
- * auth footers.
- */
-
- if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
- DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
- }
-
- if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
- DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
- prs_mem_free(&p->out_data.frag);
- prs_mem_free(&out_hdr_ba);
- return False;
- }
-
- DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
-
- /* decode the bind request */
- blob_rb = data_blob_const(prs_data_p(rpc_in_p),
- prs_data_size(rpc_in_p));
- status = dcerpc_pull_dcerpc_bind(talloc_tos(), &blob_rb, &rpc_bind);
- if (!NT_STATUS_IS_OK(status)) {
- goto err_exit;
+ DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound "
+ "pipe %s.\n",
+ get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
+ return setup_bind_nak(p, pkt);
}
- if (rpc_bind.num_contexts == 0) {
+ if (pkt->u.bind.num_contexts == 0) {
DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
goto err_exit;
}
* Try and find the correct pipe name to ensure
* that this is a pipe name we support.
*/
- id = rpc_bind.ctx_list[0].abstract_syntax;
+ id = pkt->u.bind.ctx_list[0].abstract_syntax;
if (rpc_srv_pipe_exists_by_id(&id)) {
DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
rpc_srv_get_pipe_cli_name(&id),
status = smb_probe_module(
"rpc", get_pipe_name_from_syntax(
talloc_tos(),
- &rpc_bind.ctx_list[0].abstract_syntax));
+ &pkt->u.bind.ctx_list[0].abstract_syntax));
if (NT_STATUS_IS_ERR(status)) {
DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
get_pipe_name_from_syntax(
talloc_tos(),
- &rpc_bind.ctx_list[0].abstract_syntax)));
- prs_mem_free(&p->out_data.frag);
- prs_mem_free(&out_hdr_ba);
- prs_mem_free(&out_auth);
+ &pkt->u.bind.ctx_list[0].abstract_syntax)));
- return setup_bind_nak(p);
+ return setup_bind_nak(p, pkt);
}
if (rpc_srv_get_pipe_interface_by_cli_name(
&p->syntax),
get_pipe_name_from_syntax(talloc_tos(),
&p->syntax)));
- goto err_exit;
+ return setup_bind_nak(p, pkt);
}
}
- /* name has to be \PIPE\xxxxx */
- fstrcpy(ack_pipe_name, "\\PIPE\\");
- fstrcat(ack_pipe_name, rpc_srv_get_pipe_srv_name(&id));
-
DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
- if (rpc_bind.assoc_group_id != 0) {
- assoc_gid = rpc_bind.assoc_group_id;
+ if (pkt->u.bind.assoc_group_id != 0) {
+ assoc_gid = pkt->u.bind.assoc_group_id;
} else {
assoc_gid = 0x53f0;
}
-
/*
* Create the bind response struct.
*/
Needed when adding entries to a DACL from NT5 - SK */
if (check_bind_req(p,
- &rpc_bind.ctx_list[0].abstract_syntax,
- &rpc_bind.ctx_list[0].transfer_syntaxes[0],
- rpc_bind.ctx_list[0].context_id)) {
- init_rpc_hdr_ba(&hdr_ba,
- RPC_MAX_PDU_FRAG_LEN,
- RPC_MAX_PDU_FRAG_LEN,
- assoc_gid,
- ack_pipe_name,
- 0x1, 0x0, 0x0,
- &rpc_bind.ctx_list[0].transfer_syntaxes[0]);
+ &pkt->u.bind.ctx_list[0].abstract_syntax,
+ &pkt->u.bind.ctx_list[0].transfer_syntaxes[0],
+ pkt->u.bind.ctx_list[0].context_id)) {
+
+ bind_ack_ctx.result = 0;
+ bind_ack_ctx.reason = 0;
+ bind_ack_ctx.syntax = pkt->u.bind.ctx_list[0].transfer_syntaxes[0];
} else {
- /* Rejection reason: abstract syntax not supported */
- init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
- RPC_MAX_PDU_FRAG_LEN, assoc_gid,
- ack_pipe_name, 0x1, 0x2, 0x1,
- &null_ndr_syntax_id);
p->pipe_bound = False;
- }
-
- /*
- * and marshall it.
- */
-
- if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
- DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
- goto err_exit;
+ /* Rejection reason: abstract syntax not supported */
+ bind_ack_ctx.result = DCERPC_BIND_PROVIDER_REJECT;
+ bind_ack_ctx.reason = DCERPC_BIND_REASON_ASYNTAX;
+ bind_ack_ctx.syntax = null_ndr_syntax_id;
}
/*
* Check if this is an authenticated bind request.
*/
-
- if (p->hdr.auth_len) {
- /*
- * Decode the authentication verifier.
- */
-
- /* Work out any padding needed before the auth footer. */
- if ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE) {
- ss_padding_len = SERVER_NDR_PADDING_SIZE -
- ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE);
- DEBUG(10,("api_pipe_bind_req: auth pad_len = %u\n",
- (unsigned int)ss_padding_len ));
- }
-
+ if (pkt->auth_length) {
/* Quick length check. Won't catch a bad auth footer,
* prevents overrun. */
- if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_AUTH_LEN + p->hdr.auth_len) {
+ if (pkt->frag_length < RPC_HEADER_LEN +
+ RPC_HDR_AUTH_LEN +
+ pkt->auth_length) {
DEBUG(0,("api_pipe_bind_req: auth_len (%u) "
"too long for fragment %u.\n",
- (unsigned int)p->hdr.auth_len,
- (unsigned int)p->hdr.frag_len ));
+ (unsigned int)pkt->auth_length,
+ (unsigned int)pkt->frag_length));
goto err_exit;
}
- /* Pull the auth header and the following data into a blob. */
- /* NB. The offset of the auth_header is relative to the *end*
- * of the packet, not the start. Also, the length of the
- * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
- * as the RPC header isn't included in rpc_in_p. */
- if(!prs_set_offset(rpc_in_p,
- p->hdr.frag_len - RPC_HEADER_LEN -
- RPC_HDR_AUTH_LEN - p->hdr.auth_len)) {
- DEBUG(0,("api_pipe_bind_req: cannot move "
- "offset to %u.\n",
- (unsigned int)(p->hdr.frag_len -
- RPC_HDR_AUTH_LEN - p->hdr.auth_len) ));
- goto err_exit;
- }
-
- auth_blob = data_blob_const(prs_data_p(rpc_in_p)
- + prs_offset(rpc_in_p),
- prs_data_size(rpc_in_p)
- - prs_offset(rpc_in_p));
-
- status = dcerpc_pull_dcerpc_auth(prs_get_mem_context(rpc_in_p),
- &auth_blob, &auth_info);
+ /*
+ * Decode the authentication verifier.
+ */
+ status = dcerpc_pull_dcerpc_auth(pkt,
+ &pkt->u.bind.auth_info,
+ &auth_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Unable to unmarshall dcerpc_auth.\n"));
goto err_exit;
(unsigned int)auth_info.auth_level ));
goto err_exit;
}
- } else {
- ZERO_STRUCT(auth_info);
- }
- switch(auth_type) {
+ switch (auth_type) {
case DCERPC_AUTH_TYPE_NTLMSSP:
- if (!pipe_ntlmssp_auth_bind(p, rpc_in_p,
- ss_padding_len, &auth_info, &out_auth)) {
+ if (!pipe_ntlmssp_auth_bind(p, pkt,
+ &auth_info, &auth_resp)) {
goto err_exit;
}
assoc_gid = 0x7a77;
break;
case DCERPC_AUTH_TYPE_SCHANNEL:
- if (!pipe_schannel_auth_bind(p, rpc_in_p,
- ss_padding_len, &auth_info, &out_auth)) {
+ if (!pipe_schannel_auth_bind(p, pkt,
+ &auth_info, &auth_resp)) {
goto err_exit;
}
break;
case DCERPC_AUTH_TYPE_SPNEGO:
- if (!pipe_spnego_auth_bind_negotiate(p, rpc_in_p,
- ss_padding_len, &auth_info, &out_auth)) {
+ if (!pipe_spnego_auth_bind_negotiate(p, pkt,
+ &auth_info, &auth_resp)) {
goto err_exit;
}
break;
case DCERPC_AUTH_TYPE_NONE:
- /* Unauthenticated bind request. */
- /* We're finished - no more packets. */
- p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
- /* We must set the pipe auth_level here also. */
- p->auth.auth_level = DCERPC_AUTH_LEVEL_NONE;
- p->pipe_bound = True;
- /* The session key was initialized from the SMB
- * session in make_internal_rpc_pipe_p */
- ss_padding_len = 0;
break;
default:
- DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type ));
+ DEBUG(0, ("Unknown auth type %x requested.\n", auth_type));
goto err_exit;
+ }
}
- /*
- * Create the header, now we know the length.
- */
- if (prs_offset(&out_auth)) {
- auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
+ if (auth_type == DCERPC_AUTH_TYPE_NONE) {
+ /* Unauthenticated bind request. */
+ /* We're finished - no more packets. */
+ p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
+ /* We must set the pipe auth_level here also. */
+ p->auth.auth_level = DCERPC_AUTH_LEVEL_NONE;
+ p->pipe_bound = True;
+ /* The session key was initialized from the SMB
+ * session in make_internal_rpc_pipe_p */
}
- init_rpc_hdr(&p->hdr, DCERPC_PKT_BIND_ACK, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST,
- p->hdr.call_id,
- RPC_HEADER_LEN + prs_offset(&out_hdr_ba) +
- ss_padding_len + prs_offset(&out_auth),
- auth_len);
+ ZERO_STRUCT(u.bind_ack);
+ u.bind_ack.max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
+ u.bind_ack.max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
+ u.bind_ack.assoc_group_id = assoc_gid;
- /*
- * Marshall the header into the outgoing PDU.
- */
-
- if(!smb_io_rpc_hdr("", &p->hdr, &p->out_data.frag, 0)) {
- DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
+ /* name has to be \PIPE\xxxxx */
+ u.bind_ack.secondary_address =
+ talloc_asprintf(pkt, "\\PIPE\\%s",
+ rpc_srv_get_pipe_srv_name(&id));
+ if (!u.bind_ack.secondary_address) {
+ DEBUG(0, ("Out of memory!\n"));
goto err_exit;
}
+ u.bind_ack.secondary_address_size =
+ strlen(u.bind_ack.secondary_address) + 1;
+
+ u.bind_ack.num_results = 1;
+ u.bind_ack.ctx_list = &bind_ack_ctx;
+
+ /* NOTE: We leave the auth_info empty so we can calculate the padding
+ * later and then append the auth_info --simo */
/*
- * Now add the RPC_HDR_BA and any auth needed.
+ * Marshall directly into the outgoing PDU space. We
+ * must do this as we need to set to the bind response
+ * header and are never sending more than one PDU here.
*/
- if(!prs_append_prs_data(&p->out_data.frag, &out_hdr_ba)) {
- DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
- goto err_exit;
+ status = dcerpc_push_ncacn_packet(p->mem_ctx,
+ DCERPC_PKT_BIND_ACK,
+ DCERPC_PFC_FLAG_FIRST |
+ DCERPC_PFC_FLAG_LAST,
+ auth_resp.length,
+ pkt->call_id,
+ &u,
+ &p->out_data.frag);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to marshall bind_ack packet. (%s)\n",
+ nt_errstr(status)));
+ }
+
+ if (auth_resp.length) {
+
+ /* Work out any padding needed before the auth footer. */
+ pad_len = p->out_data.frag.length % SERVER_NDR_PADDING_SIZE;
+ if (pad_len) {
+ pad_len = SERVER_NDR_PADDING_SIZE - pad_len;
+ DEBUG(10, ("auth pad_len = %u\n",
+ (unsigned int)pad_len));
+ }
+
+ status = dcerpc_push_dcerpc_auth(pkt,
+ auth_type,
+ auth_info.auth_level,
+ pad_len,
+ 1, /* auth_context_id */
+ &auth_resp,
+ &auth_blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Marshalling of dcerpc_auth failed.\n"));
+ goto err_exit;
+ }
}
- if (auth_len) {
- if (ss_padding_len) {
+ /* Now that we have the auth len store it into the right place in
+ * the dcerpc header */
+ dcerpc_set_frag_length(&p->out_data.frag,
+ p->out_data.frag.length +
+ pad_len +
+ auth_blob.length);
+
+ if (auth_blob.length) {
+ if (pad_len) {
char pad[SERVER_NDR_PADDING_SIZE];
memset(pad, '\0', SERVER_NDR_PADDING_SIZE);
- if (!prs_copy_data_in(&p->out_data.frag, pad,
- ss_padding_len)) {
- DEBUG(0,("api_pipe_bind_req: failed to add %u "
- "bytes of pad data.\n",
- (unsigned int)ss_padding_len));
+ if (!data_blob_append(p->mem_ctx, &p->out_data.frag,
+ pad, pad_len)) {
+ DEBUG(0, ("api_pipe_bind_req: failed to add "
+ "%u bytes of pad data.\n",
+ (unsigned int)pad_len));
goto err_exit;
}
}
- if (!prs_append_prs_data( &p->out_data.frag, &out_auth)) {
- DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
+ if (!data_blob_append(p->mem_ctx, &p->out_data.frag,
+ auth_blob.data, auth_blob.length)) {
+ DEBUG(0, ("Append of auth info failed.\n"));
goto err_exit;
}
}
p->out_data.data_sent_length = 0;
p->out_data.current_pdu_sent = 0;
- prs_mem_free(&out_hdr_ba);
- prs_mem_free(&out_auth);
-
+ TALLOC_FREE(auth_blob.data);
return True;
err_exit:
- prs_mem_free(&p->out_data.frag);
- prs_mem_free(&out_hdr_ba);
- prs_mem_free(&out_auth);
- return setup_bind_nak(p);
+ data_blob_free(&p->out_data.frag);
+ TALLOC_FREE(auth_blob.data);
+ return setup_bind_nak(p, pkt);
}
/****************************************************************************
SPNEGO calls.
****************************************************************************/
-bool api_pipe_alter_context(pipes_struct *p, prs_struct *rpc_in_p)
+bool api_pipe_alter_context(pipes_struct *p, struct ncacn_packet *pkt)
{
- RPC_HDR_BA hdr_ba;
- struct dcerpc_bind rpc_bind;
- DATA_BLOB blob_rb;
- RPC_HDR_AUTH auth_info;
+ struct dcerpc_auth auth_info;
uint16 assoc_gid;
- fstring ack_pipe_name;
- prs_struct out_hdr_ba;
- prs_struct out_auth;
- int auth_len = 0;
- uint32_t ss_padding_len = 0;
NTSTATUS status;
-
- prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
-
- /*
- * Marshall directly into the outgoing PDU space. We
- * must do this as we need to set to the bind response
- * header and are never sending more than one PDU here.
- */
-
- /*
- * Setup the memory to marshall the ba header, and the
- * auth footers.
- */
-
- if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
- DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
- prs_mem_free(&p->out_data.frag);
- return False;
- }
-
- if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
- DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
- prs_mem_free(&p->out_data.frag);
- prs_mem_free(&out_hdr_ba);
- return False;
- }
-
- DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__));
-
- /* decode the alter context request */
- blob_rb = data_blob_const(prs_data_p(rpc_in_p),
- prs_data_size(rpc_in_p));
- status = dcerpc_pull_dcerpc_bind(talloc_tos(), &blob_rb, &rpc_bind);
- if (!NT_STATUS_IS_OK(status)) {
- goto err_exit;
- }
-
- /* secondary address CAN be NULL
- * as the specs say it's ignored.
- * It MUST be NULL to have the spoolss working.
- */
- fstrcpy(ack_pipe_name,"");
+ union dcerpc_payload u;
+ struct dcerpc_ack_ctx bind_ack_ctx;
+ DATA_BLOB auth_resp = data_blob_null;
+ DATA_BLOB auth_blob = data_blob_null;
+ int pad_len = 0;
DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));
- if (rpc_bind.assoc_group_id != 0) {
- assoc_gid = rpc_bind.assoc_group_id;
+ if (pkt->u.bind.assoc_group_id != 0) {
+ assoc_gid = pkt->u.bind.assoc_group_id;
} else {
assoc_gid = 0x53f0;
}
Needed when adding entries to a DACL from NT5 - SK */
if (check_bind_req(p,
- &rpc_bind.ctx_list[0].abstract_syntax,
- &rpc_bind.ctx_list[0].transfer_syntaxes[0],
- rpc_bind.ctx_list[0].context_id)) {
- init_rpc_hdr_ba(&hdr_ba,
- RPC_MAX_PDU_FRAG_LEN,
- RPC_MAX_PDU_FRAG_LEN,
- assoc_gid,
- ack_pipe_name,
- 0x1, 0x0, 0x0,
- &rpc_bind.ctx_list[0].transfer_syntaxes[0]);
+ &pkt->u.bind.ctx_list[0].abstract_syntax,
+ &pkt->u.bind.ctx_list[0].transfer_syntaxes[0],
+ pkt->u.bind.ctx_list[0].context_id)) {
+
+ bind_ack_ctx.result = 0;
+ bind_ack_ctx.reason = 0;
+ bind_ack_ctx.syntax = pkt->u.bind.ctx_list[0].transfer_syntaxes[0];
} else {
- /* Rejection reason: abstract syntax not supported */
- init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
- RPC_MAX_PDU_FRAG_LEN, assoc_gid,
- ack_pipe_name, 0x1, 0x2, 0x1,
- &null_ndr_syntax_id);
p->pipe_bound = False;
+ /* Rejection reason: abstract syntax not supported */
+ bind_ack_ctx.result = DCERPC_BIND_PROVIDER_REJECT;
+ bind_ack_ctx.reason = DCERPC_BIND_REASON_ASYNTAX;
+ bind_ack_ctx.syntax = null_ndr_syntax_id;
}
- /*
- * and marshall it.
- */
-
- if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
- DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
- goto err_exit;
- }
-
-
/*
* Check if this is an authenticated alter context request.
*/
-
- if (p->hdr.auth_len != 0) {
- /*
- * Decode the authentication verifier.
- */
-
- /* Work out any padding needed before the auth footer. */
- if ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE) {
- ss_padding_len = SERVER_NDR_PADDING_SIZE -
- ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE);
- DEBUG(10,("api_pipe_alter_context: auth pad_len = %u\n",
- (unsigned int)ss_padding_len ));
- }
-
+ if (pkt->auth_length) {
/* Quick length check. Won't catch a bad auth footer,
* prevents overrun. */
- if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_AUTH_LEN + p->hdr.auth_len) {
+ if (pkt->frag_length < RPC_HEADER_LEN +
+ RPC_HDR_AUTH_LEN +
+ pkt->auth_length) {
DEBUG(0,("api_pipe_alter_context: auth_len (%u) "
"too long for fragment %u.\n",
- (unsigned int)p->hdr.auth_len,
- (unsigned int)p->hdr.frag_len ));
+ (unsigned int)pkt->auth_length,
+ (unsigned int)pkt->frag_length ));
goto err_exit;
}
- /* Pull the auth header and the following data into a blob. */
- /* NB. The offset of the auth_header is relative to the *end*
- * of the packet, not the start. Also, the length of the
- * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
- * as the RPC header isn't included in rpc_in_p. */
- if(!prs_set_offset(rpc_in_p,
- p->hdr.frag_len - RPC_HEADER_LEN -
- RPC_HDR_AUTH_LEN - p->hdr.auth_len)) {
- DEBUG(0,("api_alter_context: cannot move "
- "offset to %u.\n",
- (unsigned int)(p->hdr.frag_len -
- RPC_HDR_AUTH_LEN - p->hdr.auth_len) ));
+ status = dcerpc_pull_dcerpc_auth(pkt,
+ &pkt->u.bind.auth_info,
+ &auth_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Unable to unmarshall dcerpc_auth.\n"));
goto err_exit;
}
- if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
- DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
- goto err_exit;
- }
/*
* Currently only the SPNEGO auth type uses the alter ctx
if (auth_info.auth_type == DCERPC_AUTH_TYPE_SPNEGO) {
/* We can only finish if the pipe is unbound. */
if (!p->pipe_bound) {
- if (!pipe_spnego_auth_bind_continue(p, rpc_in_p,
- ss_padding_len, &auth_info, &out_auth)) {
+ if (!pipe_spnego_auth_bind_continue(p, pkt,
+ &auth_info, &auth_resp)) {
goto err_exit;
}
+
} else {
goto err_exit;
}
}
- } else {
- ZERO_STRUCT(auth_info);
}
- /*
- * Create the header, now we know the length.
+
+ ZERO_STRUCT(u.alter_resp);
+ u.alter_resp.max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
+ u.alter_resp.max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
+ u.alter_resp.assoc_group_id = assoc_gid;
+
+ /* secondary address CAN be NULL
+ * as the specs say it's ignored.
+ * It MUST be NULL to have the spoolss working.
*/
+ u.alter_resp.secondary_address = "";
+ u.alter_resp.secondary_address_size = 1;
- if (prs_offset(&out_auth)) {
- auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
- }
+ u.alter_resp.num_results = 1;
+ u.alter_resp.ctx_list = &bind_ack_ctx;
- init_rpc_hdr(&p->hdr, DCERPC_PKT_ALTER_RESP, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST,
- p->hdr.call_id,
- RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
- auth_len);
+ /* NOTE: We leave the auth_info empty so we can calculate the padding
+ * later and then append the auth_info --simo */
/*
- * Marshall the header into the outgoing PDU.
+ * Marshall directly into the outgoing PDU space. We
+ * must do this as we need to set to the bind response
+ * header and are never sending more than one PDU here.
*/
- if(!smb_io_rpc_hdr("", &p->hdr, &p->out_data.frag, 0)) {
- DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
- goto err_exit;
+ status = dcerpc_push_ncacn_packet(p->mem_ctx,
+ DCERPC_PKT_ALTER_RESP,
+ DCERPC_PFC_FLAG_FIRST |
+ DCERPC_PFC_FLAG_LAST,
+ auth_resp.length,
+ pkt->call_id,
+ &u,
+ &p->out_data.frag);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to marshall bind_ack packet. (%s)\n",
+ nt_errstr(status)));
}
- /*
- * Now add the RPC_HDR_BA and any auth needed.
- */
+ if (auth_resp.length) {
- if(!prs_append_prs_data(&p->out_data.frag, &out_hdr_ba)) {
- DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
- goto err_exit;
+ /* Work out any padding needed before the auth footer. */
+ pad_len = p->out_data.frag.length % SERVER_NDR_PADDING_SIZE;
+ if (pad_len) {
+ pad_len = SERVER_NDR_PADDING_SIZE - pad_len;
+ DEBUG(10, ("auth pad_len = %u\n",
+ (unsigned int)pad_len));
+ }
+
+ status = dcerpc_push_dcerpc_auth(pkt,
+ auth_info.auth_type,
+ auth_info.auth_level,
+ pad_len,
+ 1, /* auth_context_id */
+ &auth_resp,
+ &auth_blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Marshalling of dcerpc_auth failed.\n"));
+ goto err_exit;
+ }
}
- if (auth_len) {
- if (ss_padding_len) {
+ /* Now that we have the auth len store it into the right place in
+ * the dcerpc header */
+ dcerpc_set_frag_length(&p->out_data.frag,
+ p->out_data.frag.length +
+ pad_len + auth_blob.length);
+
+ if (auth_resp.length) {
+ if (pad_len) {
char pad[SERVER_NDR_PADDING_SIZE];
memset(pad, '\0', SERVER_NDR_PADDING_SIZE);
- if (!prs_copy_data_in(&p->out_data.frag, pad,
- ss_padding_len)) {
- DEBUG(0,("api_pipe_alter_context: failed to add %u "
- "bytes of pad data.\n",
- (unsigned int)ss_padding_len));
+ if (!data_blob_append(p->mem_ctx,
+ &p->out_data.frag,
+ pad, pad_len)) {
+ DEBUG(0, ("api_pipe_bind_req: failed to add "
+ "%u bytes of pad data.\n",
+ (unsigned int)pad_len));
goto err_exit;
}
}
- if (!prs_append_prs_data( &p->out_data.frag, &out_auth)) {
- DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
+ if (!data_blob_append(p->mem_ctx, &p->out_data.frag,
+ auth_blob.data, auth_blob.length)) {
+ DEBUG(0, ("Append of auth info failed.\n"));
goto err_exit;
}
}
p->out_data.data_sent_length = 0;
p->out_data.current_pdu_sent = 0;
- prs_mem_free(&out_hdr_ba);
- prs_mem_free(&out_auth);
+ TALLOC_FREE(auth_blob.data);
return True;
err_exit:
- prs_mem_free(&p->out_data.frag);
- prs_mem_free(&out_hdr_ba);
- prs_mem_free(&out_auth);
- return setup_bind_nak(p);
-}
-
-/****************************************************************************
- Deal with NTLMSSP sign & seal processing on an RPC request.
-****************************************************************************/
-
-bool api_pipe_ntlmssp_auth_process(pipes_struct *p, prs_struct *rpc_in,
- uint32 *p_ss_padding_len, NTSTATUS *pstatus)
-{
- RPC_HDR_AUTH auth_info;
- uint32 auth_len = p->hdr.auth_len;
- uint32 save_offset = prs_offset(rpc_in);
- struct auth_ntlmssp_state *a = p->auth.a_u.auth_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;
-
- *pstatus = NT_STATUS_OK;
-
- if (p->auth.auth_level == DCERPC_AUTH_LEVEL_NONE || p->auth.auth_level == DCERPC_AUTH_LEVEL_CONNECT) {
- return True;
- }
-
- if (!a) {
- *pstatus = NT_STATUS_INVALID_PARAMETER;
- return False;
- }
-
- /* Ensure there's enough data for an authenticated request. */
- if (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN
- + auth_len > p->hdr.frag_len) {
- DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
- (unsigned int)auth_len ));
- *pstatus = NT_STATUS_INVALID_PARAMETER;
- return False;
- }
-
- /*
- * 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.
- * Both of these values include any auth_pad_len bytes.
- */
-
- data = (unsigned char *)(prs_data_p(rpc_in) + RPC_HDR_REQ_LEN);
- data_len = (size_t)(p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - RPC_HDR_AUTH_LEN - auth_len);
-
- full_packet_data = p->in_data.current_in_pdu;
- full_packet_data_len = p->hdr.frag_len - auth_len;
-
- /* Pull the auth header and the following data into a blob. */
- /* NB. The offset of the auth_header is relative to the *end*
- * of the packet, not the start. Also, the length of the
- * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
- * as the RPC header isn't included in rpc_in_p. */
- if(!prs_set_offset(rpc_in,
- p->hdr.frag_len - RPC_HEADER_LEN -
- RPC_HDR_AUTH_LEN - auth_len)) {
- DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move "
- "offset to %u.\n",
- (unsigned int)(p->hdr.frag_len -
- RPC_HDR_AUTH_LEN - auth_len) ));
- *pstatus = NT_STATUS_INVALID_PARAMETER;
- return False;
- }
-
- if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
- DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to "
- "unmarshall RPC_HDR_AUTH.\n"));
- *pstatus = NT_STATUS_INVALID_PARAMETER;
- return False;
- }
-
- /* Ensure auth_pad_len fits into the packet. */
- if (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + auth_info.auth_pad_len +
- RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len) {
- DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_info.auth_pad_len "
- "too large (%u), auth_len (%u), frag_len = (%u).\n",
- (unsigned int)auth_info.auth_pad_len,
- (unsigned int)auth_len,
- (unsigned int)p->hdr.frag_len ));
- *pstatus = NT_STATUS_INVALID_PARAMETER;
- return False;
- }
-
- auth_blob.data = (unsigned char *)prs_data_p(rpc_in) + prs_offset(rpc_in);
- auth_blob.length = auth_len;
-
- switch (p->auth.auth_level) {
- case DCERPC_AUTH_LEVEL_PRIVACY:
- /* Data is encrypted. */
- *pstatus = auth_ntlmssp_unseal_packet(a,
- data, data_len,
- full_packet_data,
- full_packet_data_len,
- &auth_blob);
- if (!NT_STATUS_IS_OK(*pstatus)) {
- return False;
- }
- break;
- case DCERPC_AUTH_LEVEL_INTEGRITY:
- /* Data is signed. */
- *pstatus = auth_ntlmssp_check_packet(a,
- data, data_len,
- full_packet_data,
- full_packet_data_len,
- &auth_blob);
- if (!NT_STATUS_IS_OK(*pstatus)) {
- return False;
- }
- break;
- default:
- *pstatus = NT_STATUS_INVALID_PARAMETER;
- return False;
- }
-
- /*
- * Return the current pointer to the data offset.
- */
-
- if(!prs_set_offset(rpc_in, save_offset)) {
- DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
- (unsigned int)save_offset ));
- *pstatus = NT_STATUS_INVALID_PARAMETER;
- return False;
- }
-
- /*
- * 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 True;
-}
-
-/****************************************************************************
- Deal with schannel processing on an RPC request.
-****************************************************************************/
-
-bool api_pipe_schannel_process(pipes_struct *p, prs_struct *rpc_in, uint32 *p_ss_padding_len)
-{
- uint32 data_len;
- uint32 auth_len;
- uint32 save_offset = prs_offset(rpc_in);
- RPC_HDR_AUTH auth_info;
- DATA_BLOB blob;
- NTSTATUS status;
- uint8_t *data;
-
- auth_len = p->hdr.auth_len;
-
- if (auth_len < RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN ||
- auth_len > RPC_HEADER_LEN +
- RPC_HDR_REQ_LEN +
- RPC_HDR_AUTH_LEN +
- auth_len) {
- DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len ));
- return False;
- }
-
- /*
- * The following is that length of the data we must verify or unseal.
- * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
- * preceeding the auth_data, but does include the auth_pad_len bytes.
- */
-
- if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len) {
- DEBUG(0,("Incorrect frag %u, auth %u.\n",
- (unsigned int)p->hdr.frag_len,
- (unsigned int)auth_len ));
- return False;
- }
-
- data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
- RPC_HDR_AUTH_LEN - auth_len;
-
- DEBUG(5,("data %d auth %d\n", data_len, auth_len));
-
- /* Pull the auth header and the following data into a blob. */
- /* NB. The offset of the auth_header is relative to the *end*
- * of the packet, not the start. Also, the length of the
- * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
- * as the RPC header isn't included in rpc_in_p. */
- if(!prs_set_offset(rpc_in,
- p->hdr.frag_len - RPC_HEADER_LEN -
- RPC_HDR_AUTH_LEN - auth_len)) {
- DEBUG(0,("api_pipe_schannel_process: cannot move "
- "offset to %u.\n",
- (unsigned int)(p->hdr.frag_len -
- RPC_HDR_AUTH_LEN - auth_len) ));
- return False;
- }
-
- if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
- DEBUG(0,("api_pipe_schannel_process: failed to "
- "unmarshall RPC_HDR_AUTH.\n"));
- return False;
- }
-
- /* Ensure auth_pad_len fits into the packet. */
- if (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + auth_info.auth_pad_len +
- RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len) {
- DEBUG(0,("api_pipe_schannel_process: auth_info.auth_pad_len "
- "too large (%u), auth_len (%u), frag_len = (%u).\n",
- (unsigned int)auth_info.auth_pad_len,
- (unsigned int)auth_len,
- (unsigned int)p->hdr.frag_len ));
- return False;
- }
-
- if (auth_info.auth_type != DCERPC_AUTH_TYPE_SCHANNEL) {
- DEBUG(0,("Invalid auth info %d on schannel\n",
- auth_info.auth_type));
- return False;
- }
-
- blob = data_blob_const(prs_data_p(rpc_in) + prs_offset(rpc_in), auth_len);
-
- if (DEBUGLEVEL >= 10) {
- dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob);
- }
-
- data = (uint8_t *)prs_data_p(rpc_in)+RPC_HDR_REQ_LEN;
-
- switch (auth_info.auth_level) {
- case DCERPC_AUTH_LEVEL_PRIVACY:
- status = netsec_incoming_packet(p->auth.a_u.schannel_auth,
- talloc_tos(),
- true,
- data,
- data_len,
- &blob);
- break;
- case DCERPC_AUTH_LEVEL_INTEGRITY:
- status = netsec_incoming_packet(p->auth.a_u.schannel_auth,
- talloc_tos(),
- false,
- data,
- data_len,
- &blob);
- break;
- default:
- status = NT_STATUS_INTERNAL_ERROR;
- break;
- }
-
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("failed to unseal packet: %s\n", nt_errstr(status)));
- return false;
- }
-
- /*
- * Return the current pointer to the data offset.
- */
-
- if(!prs_set_offset(rpc_in, save_offset)) {
- DEBUG(0,("failed to set offset back to %u\n",
- (unsigned int)save_offset ));
- return False;
- }
-
- /*
- * 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 True;
+ data_blob_free(&p->out_data.frag);
+ TALLOC_FREE(auth_blob.data);
+ return setup_bind_nak(p, pkt);
}
/****************************************************************************
return;
}
-static bool api_rpcTNP(pipes_struct *p,
+static bool api_rpcTNP(pipes_struct *p, struct ncacn_packet *pkt,
const struct api_struct *api_rpc_cmds, int n_cmds);
/****************************************************************************
before doing the call.
****************************************************************************/
-bool api_pipe_request(pipes_struct *p)
+bool api_pipe_request(pipes_struct *p, struct ncacn_packet *pkt)
{
bool ret = False;
bool changed_user = False;
((p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) ||
(p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
if(!become_authenticated_pipe_user(p)) {
- prs_mem_free(&p->out_data.rdata);
+ data_blob_free(&p->out_data.rdata);
return False;
}
changed_user = True;
/* get the set of RPC functions for this context */
- pipe_fns = find_pipe_fns_by_context(p->contexts, p->hdr_req.context_id);
+ pipe_fns = find_pipe_fns_by_context(p->contexts,
+ pkt->u.request.context_id);
if ( pipe_fns ) {
TALLOC_CTX *frame = talloc_stackframe();
- ret = api_rpcTNP(p, pipe_fns->cmds, pipe_fns->n_cmds);
+ ret = api_rpcTNP(p, pkt, pipe_fns->cmds, pipe_fns->n_cmds);
TALLOC_FREE(frame);
}
else {
- DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
- p->hdr_req.context_id,
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
+ DEBUG(0, ("No rpc function table associated with context "
+ "[%d] on pipe [%s]\n",
+ pkt->u.request.context_id,
+ get_pipe_name_from_syntax(talloc_tos(),
+ &p->syntax)));
}
if (changed_user) {
Calls the underlying RPC function for a named pipe.
********************************************************************/
-static bool api_rpcTNP(pipes_struct *p,
+static bool api_rpcTNP(pipes_struct *p, struct ncacn_packet *pkt,
const struct api_struct *api_rpc_cmds, int n_cmds)
{
int fn_num;
- uint32 offset1, offset2;
+ uint32_t offset1;
/* interpret the command */
DEBUG(4,("api_rpcTNP: %s op 0x%x - ",
get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
- p->hdr_req.opnum));
+ pkt->u.request.opnum));
if (DEBUGLEVEL >= 50) {
fstring name;
slprintf(name, sizeof(name)-1, "in_%s",
get_pipe_name_from_syntax(talloc_tos(), &p->syntax));
- prs_dump(name, p->hdr_req.opnum, &p->in_data.data);
+ prs_dump(name, pkt->u.request.opnum, &p->in_data.data);
}
for (fn_num = 0; fn_num < n_cmds; fn_num++) {
- if (api_rpc_cmds[fn_num].opnum == p->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL) {
- DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds[fn_num].name));
+ if (api_rpc_cmds[fn_num].opnum == pkt->u.request.opnum &&
+ api_rpc_cmds[fn_num].fn != NULL) {
+ DEBUG(3, ("api_rpcTNP: rpc command: %s\n",
+ api_rpc_cmds[fn_num].name));
break;
}
}
return True;
}
- offset1 = prs_offset(&p->out_data.rdata);
+ offset1 = p->out_data.rdata.length;
DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
fn_num, api_rpc_cmds[fn_num].fn));
DEBUG(0,("api_rpcTNP: %s: %s failed.\n",
get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
api_rpc_cmds[fn_num].name));
- prs_mem_free(&p->out_data.rdata);
+ data_blob_free(&p->out_data.rdata);
return False;
}
return True;
}
- offset2 = prs_offset(&p->out_data.rdata);
- prs_set_offset(&p->out_data.rdata, offset1);
if (DEBUGLEVEL >= 50) {
fstring name;
slprintf(name, sizeof(name)-1, "out_%s",
get_pipe_name_from_syntax(talloc_tos(), &p->syntax));
- prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
+ prs_dump_region(name, pkt->u.request.opnum,
+ p->out_data.rdata.data,
+ offset1,
+ p->out_data.rdata.length);
}
- prs_set_offset(&p->out_data.rdata, offset2);
DEBUG(5,("api_rpcTNP: called %s successfully\n",
get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
git.samba.org / kamenim / samba.git / blobdiff