--- /dev/null
+/*
+ * Unix SMB/CIFS implementation.
+ * RPC Pipe client / server routines
+ * Almost completely rewritten by (C) 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.
+ */
+
+/* this module apparently provides an implementation of DCE/RPC over a
+ * named pipe (IPC$ connection using SMBtrans). details of DCE/RPC
+ * documentation are available (in on-line form) from the X-Open group.
+ *
+ * this module should provide a level of abstraction between SMB
+ * and DCE/RPC, while minimising the amount of mallocs, unnecessary
+ * data copies, and network traffic.
+ *
+ */
+
+#include "includes.h"
+
+extern struct pipe_id_info pipe_names[];
+extern struct current_user current_user;
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_RPC_SRV
+
+static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data *auth)
+{
+ AUTH_NTLMSSP_STATE *a = auth->a_u.auth_ntlmssp_state;
+
+ if (a) {
+ auth_ntlmssp_end(&a);
+ }
+ auth->a_u.auth_ntlmssp_state = NULL;
+}
+
+/*******************************************************************
+ Generate the next PDU to be returned from the data in p->rdata.
+ Handle NTLMSSP.
+ ********************************************************************/
+
+static BOOL create_next_pdu_ntlmssp(pipes_struct *p)
+{
+ RPC_HDR_RESP hdr_resp;
+ uint32 ss_padding_len = 0;
+ uint32 data_space_available;
+ uint32 data_len_left;
+ uint32 data_len;
+ prs_struct outgoing_pdu;
+ NTSTATUS status;
+ DATA_BLOB auth_blob;
+ RPC_HDR_AUTH auth_info;
+ uint8 auth_type, auth_level;
+ AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
+
+ /*
+ * 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(0x1c010002));
+ return True;
+ }
+
+ memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
+
+ /* Change the incoming request header to a response. */
+ p->hdr.pkt_type = RPC_RESPONSE;
+
+ /* Set up rpc header flags. */
+ if (p->out_data.data_sent_length == 0) {
+ p->hdr.flags = RPC_FLG_FIRST;
+ } else {
+ p->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;
+ }
+
+ data_space_available = sizeof(p->out_data.current_pdu) - 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.
+ */
+
+ 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)) {
+ p->hdr.flags |= RPC_FLG_LAST;
+ if (data_len_left % 8) {
+ ss_padding_len = 8 - (data_len_left % 8);
+ DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
+ ss_padding_len ));
+ }
+ }
+
+ /*
+ * Set up the header lengths.
+ */
+
+ p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN +
+ data_len + ss_padding_len +
+ RPC_HDR_AUTH_LEN + NTLMSSP_SIG_SIZE;
+ p->hdr.auth_len = NTLMSSP_SIG_SIZE;
+
+
+ /*
+ * Init the parse struct to point at the outgoing
+ * data.
+ */
+
+ prs_init( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
+ prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
+
+ /* Store the header in the data stream. */
+ if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
+ DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
+ DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ /* Copy the data into the PDU. */
+
+ if(!prs_append_some_prs_data(&outgoing_pdu, &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(&outgoing_pdu);
+ return False;
+ }
+
+ /* Copy the sign/seal padding data. */
+ if (ss_padding_len) {
+ char pad[8];
+
+ memset(pad, '\0', 8);
+ if (!prs_copy_data_in(&outgoing_pdu, 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(&outgoing_pdu);
+ return False;
+ }
+ }
+
+
+ /* Now write out the auth header and null blob. */
+ if (p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) {
+ auth_type = RPC_NTLMSSP_AUTH_TYPE;
+ } else {
+ auth_type = RPC_SPNEGO_AUTH_TYPE;
+ }
+ if (p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
+ auth_level = RPC_AUTH_LEVEL_PRIVACY;
+ } else {
+ auth_level = RPC_AUTH_LEVEL_INTEGRITY;
+ }
+
+ 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, &outgoing_pdu, 0)) {
+ DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ /* Generate the sign blob. */
+
+ switch (p->auth.auth_level) {
+ case PIPE_AUTH_LEVEL_PRIVACY:
+ /* Data portion is encrypted. */
+ status = ntlmssp_seal_packet(a->ntlmssp_state,
+ (unsigned char *)prs_data_p(&outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
+ data_len + ss_padding_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);
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+ break;
+ case PIPE_AUTH_LEVEL_INTEGRITY:
+ /* Data is signed. */
+ status = ntlmssp_sign_packet(a->ntlmssp_state,
+ (unsigned char *)prs_data_p(&outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
+ data_len + ss_padding_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);
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+ break;
+ default:
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ /* Append the auth blob. */
+ if (!prs_copy_data_in(&outgoing_pdu, (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));
+ data_blob_free(&auth_blob);
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ data_blob_free(&auth_blob);
+
+ /*
+ * Setup the counts for this PDU.
+ */
+
+ p->out_data.data_sent_length += data_len;
+ p->out_data.current_pdu_len = p->hdr.frag_len;
+ p->out_data.current_pdu_sent = 0;
+
+ prs_mem_free(&outgoing_pdu);
+ return True;
+}
+
+/*******************************************************************
+ Generate the next PDU to be returned from the data in p->rdata.
+ Return an schannel authenticated fragment.
+ ********************************************************************/
+
+static BOOL create_next_pdu_schannel(pipes_struct *p)
+{
+ RPC_HDR_RESP hdr_resp;
+ uint32 ss_padding_len = 0;
+ uint32 data_len;
+ uint32 data_space_available;
+ uint32 data_len_left;
+ prs_struct outgoing_pdu;
+ uint32 data_pos;
+
+ /*
+ * 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(0x1c010002));
+ return True;
+ }
+
+ memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
+
+ /* Change the incoming request header to a response. */
+ p->hdr.pkt_type = RPC_RESPONSE;
+
+ /* Set up rpc header flags. */
+ if (p->out_data.data_sent_length == 0) {
+ p->hdr.flags = RPC_FLG_FIRST;
+ } else {
+ p->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;
+ }
+
+ data_space_available = sizeof(p->out_data.current_pdu) - 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.
+ */
+
+ 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)) {
+ p->hdr.flags |= RPC_FLG_LAST;
+ if (data_len_left % 8) {
+ ss_padding_len = 8 - (data_len_left % 8);
+ DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
+ ss_padding_len ));
+ }
+ }
+
+ p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len + ss_padding_len +
+ RPC_HDR_AUTH_LEN + RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
+ p->hdr.auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
+
+ /*
+ * Init the parse struct to point at the outgoing
+ * data.
+ */
+
+ prs_init( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
+ prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
+
+ /* Store the header in the data stream. */
+ if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
+ DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
+ DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ /* Store the current offset. */
+ data_pos = prs_offset(&outgoing_pdu);
+
+ /* Copy the data into the PDU. */
+
+ if(!prs_append_some_prs_data(&outgoing_pdu, &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(&outgoing_pdu);
+ return False;
+ }
+
+ /* Copy the sign/seal padding data. */
+ if (ss_padding_len) {
+ char pad[8];
+ memset(pad, '\0', 8);
+ if (!prs_copy_data_in(&outgoing_pdu, 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(&outgoing_pdu);
+ return False;
+ }
+ }
+
+ {
+ /*
+ * Schannel processing.
+ */
+ char *data;
+ RPC_HDR_AUTH auth_info;
+ RPC_AUTH_SCHANNEL_CHK verf;
+
+ data = prs_data_p(&outgoing_pdu) + data_pos;
+ /* Check it's the type of reply we were expecting to decode */
+
+ init_rpc_hdr_auth(&auth_info,
+ RPC_SCHANNEL_AUTH_TYPE,
+ p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY ?
+ RPC_AUTH_LEVEL_PRIVACY : RPC_AUTH_LEVEL_INTEGRITY,
+ ss_padding_len, 1);
+
+ if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, &outgoing_pdu, 0)) {
+ DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ schannel_encode(p->auth.a_u.schannel_auth,
+ p->auth.auth_level,
+ SENDER_IS_ACCEPTOR,
+ &verf, data, data_len + ss_padding_len);
+
+ if (!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
+ &verf, &outgoing_pdu, 0)) {
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ p->auth.a_u.schannel_auth->seq_num++;
+ }
+
+ /*
+ * Setup the counts for this PDU.
+ */
+
+ p->out_data.data_sent_length += data_len;
+ p->out_data.current_pdu_len = p->hdr.frag_len;
+ p->out_data.current_pdu_sent = 0;
+
+ prs_mem_free(&outgoing_pdu);
+ 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)
+{
+ RPC_HDR_RESP hdr_resp;
+ uint32 data_len;
+ uint32 data_space_available;
+ uint32 data_len_left;
+ prs_struct outgoing_pdu;
+
+ /*
+ * 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(0x1c010002));
+ return True;
+ }
+
+ memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
+
+ /* Change the incoming request header to a response. */
+ p->hdr.pkt_type = RPC_RESPONSE;
+
+ /* Set up rpc header flags. */
+ if (p->out_data.data_sent_length == 0) {
+ p->hdr.flags = RPC_FLG_FIRST;
+ } else {
+ p->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 = sizeof(p->out_data.current_pdu) - 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)) {
+ p->hdr.flags |= RPC_FLG_LAST;
+ }
+
+ /*
+ * Set up the header lengths.
+ */
+
+ p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len;
+ p->hdr.auth_len = 0;
+
+ /*
+ * Init the parse struct to point at the outgoing
+ * data.
+ */
+
+ prs_init( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
+ prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
+
+ /* Store the header in the data stream. */
+ if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
+ DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
+ DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ /* Copy the data into the PDU. */
+
+ if(!prs_append_some_prs_data(&outgoing_pdu, &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(&outgoing_pdu);
+ return False;
+ }
+
+ /*
+ * Setup the counts for this PDU.
+ */
+
+ p->out_data.data_sent_length += data_len;
+ p->out_data.current_pdu_len = p->hdr.frag_len;
+ p->out_data.current_pdu_sent = 0;
+
+ prs_mem_free(&outgoing_pdu);
+ return True;
+}
+
+/*******************************************************************
+ Generate the next PDU to be returned from the data in p->rdata.
+********************************************************************/
+
+BOOL create_next_pdu(pipes_struct *p)
+{
+ switch(p->auth.auth_level) {
+ case PIPE_AUTH_LEVEL_NONE:
+ case PIPE_AUTH_LEVEL_CONNECT:
+ /* This is incorrect for auth level connect. Fixme. JRA */
+ return create_next_pdu_noauth(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;
+ }
+ }
+
+ 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;
+}
+
+/*******************************************************************
+ Process an NTLMSSP authentication response.
+ If this function succeeds, the user has been authenticated
+ and their domain, name and calling workstation stored in
+ the pipe struct.
+*******************************************************************/
+
+static BOOL pipe_ntlmssp_verify_final(pipes_struct *p, DATA_BLOB *p_resp_blob)
+{
+ DATA_BLOB reply;
+ NTSTATUS status;
+ AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
+
+ DEBUG(5,("pipe_ntlmssp_verify_final: checking user details\n"));
+
+ ZERO_STRUCT(reply);
+
+ memset(p->user_name, '\0', sizeof(p->user_name));
+ memset(p->pipe_user_name, '\0', sizeof(p->pipe_user_name));
+ memset(p->domain, '\0', sizeof(p->domain));
+ memset(p->wks, '\0', sizeof(p->wks));
+
+ /* Set up for non-authenticated user. */
+ delete_nt_token(&p->pipe_user.nt_user_token);
+ p->pipe_user.ngroups = 0;
+ SAFE_FREE( p->pipe_user.groups);
+
+ status = auth_ntlmssp_update(a, *p_resp_blob, &reply);
+
+ /* Don't generate a reply. */
+ data_blob_free(&reply);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ return False;
+ }
+
+ fstrcpy(p->user_name, a->ntlmssp_state->user);
+ fstrcpy(p->pipe_user_name, a->server_info->unix_name);
+ fstrcpy(p->domain, a->ntlmssp_state->domain);
+ fstrcpy(p->wks, a->ntlmssp_state->workstation);
+
+ DEBUG(5,("pipe_ntlmssp_verify_final: OK: user: %s domain: %s workstation: %s\n",
+ p->user_name, p->domain, p->wks));
+
+ /*
+ * Store the UNIX credential data (uid/gid pair) in the pipe structure.
+ */
+
+ p->pipe_user.uid = a->server_info->uid;
+ p->pipe_user.gid = a->server_info->gid;
+
+ /*
+ * Copy the session key from the ntlmssp state.
+ */
+
+ data_blob_free(&p->session_key);
+ p->session_key = data_blob(a->ntlmssp_state->session_key.data, a->ntlmssp_state->session_key.length);
+ if (!p->session_key.data) {
+ return False;
+ }
+
+ p->pipe_user.ngroups = a->server_info->n_groups;
+ if (p->pipe_user.ngroups) {
+ if (!(p->pipe_user.groups = memdup(a->server_info->groups, sizeof(gid_t) * p->pipe_user.ngroups))) {
+ DEBUG(0,("failed to memdup group list to p->pipe_user.groups\n"));
+ return False;
+ }
+ }
+
+ if (a->server_info->ptok) {
+ p->pipe_user.nt_user_token = dup_nt_token(a->server_info->ptok);
+ } else {
+ DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
+ p->pipe_user.nt_user_token = NULL;
+ return False;
+ }
+
+ return True;
+}
+
+/*******************************************************************
+ The switch table for the pipe names and the functions to handle them.
+*******************************************************************/
+
+struct rpc_table {
+ struct {
+ const char *clnt;
+ const char *srv;
+ } pipe;
+ struct api_struct *cmds;
+ int n_cmds;
+};
+
+static struct rpc_table *rpc_lookup;
+static int rpc_lookup_size;
+
+/*******************************************************************
+ 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)
+{
+ RPC_HDR_AUTH auth_info;
+ uint32 pad;
+ DATA_BLOB blob;
+
+ ZERO_STRUCT(blob);
+
+ DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__));
+
+ if (p->hdr.auth_len == 0) {
+ DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
+ 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;
+ }
+
+ /*
+ * Decode the authentication verifier response.
+ */
+
+ if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
+ DEBUG(0,("api_pipe_bind_auth3: unmarshall of RPC_HDR_AUTH failed.\n"));
+ goto err;
+ }
+
+ if (auth_info.auth_type != RPC_NTLMSSP_AUTH_TYPE) {
+ DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
+ (unsigned int)auth_info.auth_type ));
+ return False;
+ }
+
+ blob = data_blob(NULL,p->hdr.auth_len);
+
+ if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
+ DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
+ (unsigned int)p->hdr.auth_len ));
+ goto err;
+ }
+
+ /*
+ * The following call actually checks the challenge/response data.
+ * for correctness against the given DOMAIN\user name.
+ */
+
+ if (!pipe_ntlmssp_verify_final(p, &blob)) {
+ goto err;
+ }
+
+ data_blob_free(&blob);
+
+ p->pipe_bound = True;
+
+ return True;
+
+ err:
+
+ data_blob_free(&blob);
+ free_pipe_ntlmssp_auth_data(&p->auth);
+ p->auth.a_u.auth_ntlmssp_state = NULL;
+
+ return False;
+}
+
+/*******************************************************************
+ Marshall a bind_nak pdu.
+*******************************************************************/
+
+static BOOL setup_bind_nak(pipes_struct *p)
+{
+ prs_struct outgoing_rpc;
+ RPC_HDR nak_hdr;
+ uint16 zero = 0;
+
+ /* 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( &outgoing_rpc, 0, p->mem_ctx, MARSHALL);
+ prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
+
+ /*
+ * Initialize a bind_nak header.
+ */
+
+ init_rpc_hdr(&nak_hdr, RPC_BINDNACK, RPC_FLG_FIRST | RPC_FLG_LAST,
+ p->hdr.call_id, RPC_HEADER_LEN + sizeof(uint16), 0);
+
+ /*
+ * Marshall the header into the outgoing PDU.
+ */
+
+ if(!smb_io_rpc_hdr("", &nak_hdr, &outgoing_rpc, 0)) {
+ DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
+ prs_mem_free(&outgoing_rpc);
+ return False;
+ }
+
+ /*
+ * Now add the reject reason.
+ */
+
+ if(!prs_uint16("reject code", &outgoing_rpc, 0, &zero)) {
+ prs_mem_free(&outgoing_rpc);
+ return False;
+ }
+
+ p->out_data.data_sent_length = 0;
+ p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
+ p->out_data.current_pdu_sent = 0;
+
+ if (p->auth.auth_data_free_func) {
+ (*p->auth.auth_data_free_func)(&p->auth);
+ }
+ p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
+ p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
+ p->pipe_bound = False;
+
+ return True;
+}
+
+/*******************************************************************
+ Marshall a fault pdu.
+*******************************************************************/
+
+BOOL setup_fault_pdu(pipes_struct *p, NTSTATUS status)
+{
+ prs_struct outgoing_pdu;
+ RPC_HDR fault_hdr;
+ RPC_HDR_RESP hdr_resp;
+ RPC_HDR_FAULT fault_resp;
+
+ /* 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( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
+ prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
+
+ /*
+ * Initialize a fault header.
+ */
+
+ init_rpc_hdr(&fault_hdr, RPC_FAULT, RPC_FLG_FIRST | RPC_FLG_LAST | RPC_FLG_NOCALL,
+ p->hdr.call_id, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_FAULT_LEN, 0);
+
+ /*
+ * Initialize the HDR_RESP and FAULT parts of the PDU.
+ */
+
+ memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
+
+ fault_resp.status = status;
+ fault_resp.reserved = 0;
+
+ /*
+ * Marshall the header into the outgoing PDU.
+ */
+
+ if(!smb_io_rpc_hdr("", &fault_hdr, &outgoing_pdu, 0)) {
+ DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
+ DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ if(!smb_io_rpc_hdr_fault("fault", &fault_resp, &outgoing_pdu, 0)) {
+ DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ p->out_data.data_sent_length = 0;
+ p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
+ p->out_data.current_pdu_sent = 0;
+
+ prs_mem_free(&outgoing_pdu);
+ return True;
+}
+
+#if 0
+/*******************************************************************
+ Marshall a cancel_ack pdu.
+ We should probably check the auth-verifier here.
+*******************************************************************/
+
+BOOL setup_cancel_ack_reply(pipes_struct *p, prs_struct *rpc_in_p)
+{
+ prs_struct outgoing_pdu;
+ RPC_HDR ack_reply_hdr;
+
+ /* 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( &outgoing_pdu, 0, p->mem_ctx, MARSHALL);
+ prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
+
+ /*
+ * Initialize a cancel_ack header.
+ */
+
+ init_rpc_hdr(&ack_reply_hdr, RPC_CANCEL_ACK, RPC_FLG_FIRST | RPC_FLG_LAST,
+ p->hdr.call_id, RPC_HEADER_LEN, 0);
+
+ /*
+ * Marshall the header into the outgoing PDU.
+ */
+
+ if(!smb_io_rpc_hdr("", &ack_reply_hdr, &outgoing_pdu, 0)) {
+ DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
+ prs_mem_free(&outgoing_pdu);
+ return False;
+ }
+
+ p->out_data.data_sent_length = 0;
+ p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
+ p->out_data.current_pdu_sent = 0;
+
+ prs_mem_free(&outgoing_pdu);
+ return True;
+}
+#endif
+
+/*******************************************************************
+ Ensure a bind request has the correct abstract & transfer interface.
+ Used to reject unknown binds from Win2k.
+*******************************************************************/
+
+BOOL check_bind_req(struct pipes_struct *p, RPC_IFACE* abstract,
+ RPC_IFACE* transfer, uint32 context_id)
+{
+ char *pipe_name = p->name;
+ int i=0;
+ fstring pname;
+
+ fstrcpy(pname,"\\PIPE\\");
+ fstrcat(pname,pipe_name);
+
+ DEBUG(3,("check_bind_req for %s\n", pname));
+
+ /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
+
+ for ( i=0; pipe_names[i].client_pipe; i++ ) {
+ DEBUG(10,("checking %s\n", pipe_names[i].client_pipe));
+ if ( strequal(pipe_names[i].client_pipe, pname)
+ && (abstract->version == pipe_names[i].abstr_syntax.version)
+ && (memcmp(&abstract->uuid, &pipe_names[i].abstr_syntax.uuid, sizeof(struct uuid)) == 0)
+ && (transfer->version == pipe_names[i].trans_syntax.version)
+ && (memcmp(&transfer->uuid, &pipe_names[i].trans_syntax.uuid, sizeof(struct uuid)) == 0) ) {
+ struct api_struct *fns = NULL;
+ int n_fns = 0;
+ PIPE_RPC_FNS *context_fns;
+
+ if ( !(context_fns = SMB_MALLOC_P(PIPE_RPC_FNS)) ) {
+ DEBUG(0,("check_bind_req: malloc() failed!\n"));
+ return False;
+ }
+
+ /* save the RPC function table associated with this bind */
+
+ get_pipe_fns(i, &fns, &n_fns);
+
+ context_fns->cmds = fns;
+ context_fns->n_cmds = n_fns;
+ context_fns->context_id = context_id;
+
+ /* add to the list of open contexts */
+
+ DLIST_ADD( p->contexts, context_fns );
+
+ break;
+ }
+ }
+
+ if(pipe_names[i].client_pipe == NULL) {
+ return False;
+ }
+
+ return True;
+}
+
+/*******************************************************************
+ Register commands to an RPC pipe
+*******************************************************************/
+
+NTSTATUS rpc_pipe_register_commands(int version, const char *clnt, const char *srv, const struct api_struct *cmds, int size)
+{
+ struct rpc_table *rpc_entry;
+
+ if (!clnt || !srv || !cmds) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (version != SMB_RPC_INTERFACE_VERSION) {
+ DEBUG(0,("Can't register rpc commands!\n"
+ "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
+ ", while this version of samba uses version %d!\n",
+ version,SMB_RPC_INTERFACE_VERSION));
+ return NT_STATUS_OBJECT_TYPE_MISMATCH;
+ }
+
+ /* TODO:
+ *
+ * we still need to make sure that don't register the same commands twice!!!
+ *
+ * --metze
+ */
+
+ /* We use a temporary variable because this call can fail and
+ rpc_lookup will still be valid afterwards. It could then succeed if
+ called again later */
+ rpc_lookup_size++;
+ rpc_entry = SMB_REALLOC_ARRAY(rpc_lookup, struct rpc_table, rpc_lookup_size);
+ if (NULL == rpc_entry) {
+ rpc_lookup_size--;
+ DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
+ return NT_STATUS_NO_MEMORY;
+ } else {
+ rpc_lookup = rpc_entry;
+ }
+
+ rpc_entry = rpc_lookup + (rpc_lookup_size - 1);
+ ZERO_STRUCTP(rpc_entry);
+ rpc_entry->pipe.clnt = SMB_STRDUP(clnt);
+ rpc_entry->pipe.srv = SMB_STRDUP(srv);
+ rpc_entry->cmds = SMB_REALLOC_ARRAY(rpc_entry->cmds, struct api_struct, rpc_entry->n_cmds + size);
+ memcpy(rpc_entry->cmds + rpc_entry->n_cmds, cmds, size * sizeof(struct api_struct));
+ rpc_entry->n_cmds += size;
+
+ return NT_STATUS_OK;
+}
+
+/*******************************************************************
+ Handle a SPNEGO krb5 bind auth.
+*******************************************************************/
+
+static BOOL pipe_spnego_auth_bind_kerberos(pipes_struct *p, prs_struct *rpc_in_p, RPC_HDR_AUTH *pauth_info,
+ DATA_BLOB *psecblob, prs_struct *pout_auth)
+{
+ return False;
+}
+
+/*******************************************************************
+ Handle the first part of a SPNEGO bind auth.
+*******************************************************************/
+
+static BOOL pipe_spnego_auth_bind_negotiate(pipes_struct *p, prs_struct *rpc_in_p,
+ RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
+{
+ DATA_BLOB blob;
+ DATA_BLOB secblob;
+ DATA_BLOB response;
+ DATA_BLOB chal;
+ char *OIDs[ASN1_MAX_OIDS];
+ int i;
+ NTSTATUS status;
+ BOOL got_kerberos_mechanism = False;
+ AUTH_NTLMSSP_STATE *a = NULL;
+ RPC_HDR_AUTH auth_info;
+
+ ZERO_STRUCT(secblob);
+ ZERO_STRUCT(chal);
+ ZERO_STRUCT(response);
+
+ /* Grab the SPNEGO blob. */
+ blob = data_blob(NULL,p->hdr.auth_len);
+
+ if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
+ DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
+ (unsigned int)p->hdr.auth_len ));
+ goto err;
+ }
+
+ if (blob.data[0] != ASN1_APPLICATION(0)) {
+ goto err;
+ }
+
+ /* parse out the OIDs and the first sec blob */
+ if (!parse_negTokenTarg(blob, OIDs, &secblob)) {
+ DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
+ goto err;
+ }
+
+ if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
+ got_kerberos_mechanism = True;
+ }
+
+ for (i=0;OIDs[i];i++) {
+ DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs[i]));
+ SAFE_FREE(OIDs[i]);
+ }
+ 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) || lp_use_kerberos_keytab()) ) {
+ BOOL ret = pipe_spnego_auth_bind_kerberos(p, rpc_in_p, pauth_info, &secblob, pout_auth);
+ data_blob_free(&secblob);
+ data_blob_free(&blob);
+ return ret;
+ }
+
+ if (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP && p->auth.a_u.auth_ntlmssp_state) {
+ /* Free any previous auth type. */
+ free_pipe_ntlmssp_auth_data(&p->auth);
+ }
+
+ /* Initialize the NTLM engine. */
+ status = auth_ntlmssp_start(&a);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto err;
+ }
+
+ /*
+ * Pass the first security blob of data to it.
+ * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
+ * which means we need another packet to complete the bind.
+ */
+
+ status = auth_ntlmssp_update(a, secblob, &chal);
+
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
+ goto err;
+ }
+
+ /* Generate the response blob we need for step 2 of the bind. */
+ response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
+
+ /* Copy the blob into the pout_auth parse struct */
+ init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
+ if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
+ DEBUG(0,("pipe_spnego_auth_bind_negotiate: 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_negotiate: marshalling of data blob failed.\n"));
+ goto err;
+ }
+
+ 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_SPNEGO_NTLMSSP;
+
+ data_blob_free(&blob);
+ 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;
+
+ err:
+
+ data_blob_free(&blob);
+ data_blob_free(&secblob);
+ data_blob_free(&chal);
+ data_blob_free(&response);
+
+ p->auth.a_u.auth_ntlmssp_state = NULL;
+
+ return False;
+}
+
+/*******************************************************************
+ Handle the second part of a SPNEGO bind auth.
+*******************************************************************/
+
+static BOOL pipe_spnego_auth_bind_continue(pipes_struct *p, prs_struct *rpc_in_p,
+ RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
+{
+ RPC_HDR_AUTH auth_info;
+ DATA_BLOB spnego_blob;
+ DATA_BLOB auth_blob;
+ DATA_BLOB auth_reply;
+ DATA_BLOB response;
+ 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);
+
+ if (p->auth.auth_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP || !a) {
+ DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
+ 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)) {
+ DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
+ goto err;
+ }
+
+ if (!spnego_parse_auth(spnego_blob, &auth_blob)) {
+ DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
+ goto err;
+ }
+
+ /*
+ * The following call actually checks the challenge/response data.
+ * for correctness against the given DOMAIN\user name.
+ */
+
+ if (!pipe_ntlmssp_verify_final(p, &auth_blob)) {
+ 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);
+
+ /* Copy the blob into the pout_auth parse struct */
+ init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_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;
+ }
+
+ data_blob_free(&auth_reply);
+ data_blob_free(&response);
+
+ p->pipe_bound = True;
+
+ return 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;
+
+ return False;
+}
+
+/*******************************************************************
+ Handle an schannel bind auth.
+*******************************************************************/
+
+static BOOL pipe_schannel_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
+ RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
+{
+ RPC_HDR_AUTH auth_info;
+ RPC_AUTH_SCHANNEL_NEG neg;
+ RPC_AUTH_VERIFIER auth_verifier;
+ BOOL ret;
+ struct dcinfo stored_dcinfo;
+ uint32 flags;
+
+ if (!smb_io_rpc_auth_schannel_neg("", &neg, rpc_in_p, 0)) {
+ DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
+ return False;
+ }
+
+ ZERO_STRUCT(stored_dcinfo);
+
+ become_root();
+ ret = secrets_restore_schannel_session_info(p->mem_ctx, neg.myname, &stored_dcinfo);
+ unbecome_root();
+
+ if (!ret) {
+ DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
+ return False;
+ }
+
+ p->auth.a_u.schannel_auth = TALLOC_P(p->pipe_state_mem_ctx, struct schannel_auth_struct);
+ if (!p->auth.a_u.schannel_auth) {
+ return False;
+ }
+
+ memset(p->auth.a_u.schannel_auth->sess_key, 0, sizeof(p->auth.a_u.schannel_auth->sess_key));
+ memcpy(p->auth.a_u.schannel_auth->sess_key, stored_dcinfo.sess_key, sizeof(stored_dcinfo.sess_key));
+
+ p->auth.a_u.schannel_auth->seq_num = 0;
+
+ /*
+ * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
+ * here ? We do that for NTLMSPP, but the session key is already set up from the vuser
+ * struct of the person who opened the pipe. I need to test this further. JRA.
+ */
+
+ /* The client opens a second RPC NETLOGON pipe without
+ doing a auth2. The credentials for the schannel are
+ re-used from the auth2 the client did before. */
+ p->dc = TALLOC_ZERO_P(p->pipe_state_mem_ctx, struct dcinfo);
+ if (!p->dc) {
+ return False;
+ }
+ *p->dc = stored_dcinfo;
+
+ init_rpc_hdr_auth(&auth_info, RPC_SCHANNEL_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
+ if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
+ DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
+ return False;
+ }
+
+ /*** SCHANNEL verifier ***/
+
+ init_rpc_auth_verifier(&auth_verifier, "\001", 0x0);
+ if(!smb_io_rpc_schannel_verifier("", &auth_verifier, pout_auth, 0)) {
+ DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_AUTH_VERIFIER failed.\n"));
+ return False;
+ }
+
+ prs_align(pout_auth);
+
+ flags = 5;
+ if(!prs_uint32("flags ", pout_auth, 0, &flags)) {
+ return False;
+ }
+
+ DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
+ neg.domain, neg.myname));
+
+ /* We're finished with this bind - no more packets. */
+ p->auth.auth_data_free_func = NULL;
+ p->auth.auth_type = PIPE_AUTH_TYPE_SCHANNEL;
+
+ p->pipe_bound = True;
+
+ return True;
+}
+
+/*******************************************************************
+ Handle an NTLMSSP bind auth.
+*******************************************************************/
+
+static BOOL pipe_ntlmssp_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
+ RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
+{
+ RPC_HDR_AUTH auth_info;
+ DATA_BLOB blob;
+ DATA_BLOB response;
+ NTSTATUS status;
+ AUTH_NTLMSSP_STATE *a = NULL;
+
+ ZERO_STRUCT(blob);
+ ZERO_STRUCT(response);
+
+ /* Grab the NTLMSSP blob. */
+ blob = data_blob(NULL,p->hdr.auth_len);
+
+ if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
+ DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
+ (unsigned int)p->hdr.auth_len ));
+ goto err;
+ }
+
+ if (strncmp((char *)blob.data, "NTLMSSP", 7) != 0) {
+ DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
+ goto err;
+ }
+
+ /* We have an NTLMSSP blob. */
+ status = auth_ntlmssp_start(&a);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
+ nt_errstr(status) ));
+ goto err;
+ }
+
+ status = auth_ntlmssp_update(a, blob, &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;
+ }
+
+ data_blob_free(&blob);
+
+ /* Copy the blob into the pout_auth parse struct */
+ init_rpc_hdr_auth(&auth_info, RPC_NTLMSSP_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
+ if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
+ DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
+ goto err;
+ }
+
+ if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
+ DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
+ goto err;
+ }
+
+ 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(&blob);
+ 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 RPC_AUTH3 response packet... */
+ return True;
+
+ err:
+
+ data_blob_free(&blob);
+ 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)
+{
+ RPC_HDR_BA hdr_ba;
+ RPC_HDR_RB hdr_rb;
+ RPC_HDR_AUTH auth_info;
+ uint16 assoc_gid;
+ fstring ack_pipe_name;
+ prs_struct out_hdr_ba;
+ prs_struct out_auth;
+ prs_struct outgoing_rpc;
+ int i = 0;
+ int auth_len = 0;
+ unsigned int auth_type = RPC_ANONYMOUS_AUTH_TYPE;
+
+ /* 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", p->pipe_srv_name));
+ return setup_bind_nak(p);
+ }
+
+ prs_init( &outgoing_rpc, 0, 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.
+ */
+
+ prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
+
+ /*
+ * 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(&outgoing_rpc);
+ 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(&outgoing_rpc);
+ prs_mem_free(&out_hdr_ba);
+ return False;
+ }
+
+ DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
+
+ /*
+ * Try and find the correct pipe name to ensure
+ * that this is a pipe name we support.
+ */
+
+
+ for (i = 0; i < rpc_lookup_size; i++) {
+ if (strequal(rpc_lookup[i].pipe.clnt, p->name)) {
+ DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
+ rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
+ fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
+ break;
+ }
+ }
+
+ if (i == rpc_lookup_size) {
+ if (NT_STATUS_IS_ERR(smb_probe_module("rpc", p->name))) {
+ DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
+ p->name ));
+ prs_mem_free(&outgoing_rpc);
+ prs_mem_free(&out_hdr_ba);
+ prs_mem_free(&out_auth);
+
+ return setup_bind_nak(p);
+ }
+
+ for (i = 0; i < rpc_lookup_size; i++) {
+ if (strequal(rpc_lookup[i].pipe.clnt, p->name)) {
+ DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
+ rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
+ fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
+ break;
+ }
+ }
+
+ if (i == rpc_lookup_size) {
+ DEBUG(0, ("module %s doesn't provide functions for pipe %s!\n", p->name, p->name));
+ goto err_exit;
+ }
+ }
+
+ /* decode the bind request */
+ if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
+ DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB struct.\n"));
+ goto err_exit;
+ }
+
+ /* name has to be \PIPE\xxxxx */
+ fstrcpy(ack_pipe_name, "\\PIPE\\");
+ fstrcat(ack_pipe_name, p->pipe_srv_name);
+
+ DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
+
+ /*
+ * Check if this is an authenticated bind request.
+ */
+
+ if (p->hdr.auth_len) {
+ /*
+ * Decode the authentication verifier.
+ */
+
+ if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
+ DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
+ goto err_exit;
+ }
+
+ auth_type = auth_info.auth_type;
+
+ /* Work out if we have to sign or seal etc. */
+ switch (auth_info.auth_level) {
+ case RPC_AUTH_LEVEL_INTEGRITY:
+ p->auth.auth_level = PIPE_AUTH_LEVEL_INTEGRITY;
+ break;
+ case RPC_AUTH_LEVEL_PRIVACY:
+ p->auth.auth_level = PIPE_AUTH_LEVEL_PRIVACY;
+ break;
+ default:
+ DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
+ (unsigned int)auth_info.auth_level ));
+ goto err_exit;
+ }
+ } else {
+ ZERO_STRUCT(auth_info);
+ }
+
+ assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
+
+ switch(auth_type) {
+ case RPC_NTLMSSP_AUTH_TYPE:
+ if (!pipe_ntlmssp_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
+ goto err_exit;
+ }
+ assoc_gid = 0x7a77;
+ break;
+
+ case RPC_SCHANNEL_AUTH_TYPE:
+ if (!pipe_schannel_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
+ goto err_exit;
+ }
+ break;
+
+ case RPC_SPNEGO_AUTH_TYPE:
+ if (!pipe_spnego_auth_bind_negotiate(p, rpc_in_p, &auth_info, &out_auth)) {
+ goto err_exit;
+ }
+ break;
+
+ case RPC_ANONYMOUS_AUTH_TYPE:
+ /* 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 = PIPE_AUTH_LEVEL_NONE;
+ p->pipe_bound = True;
+ break;
+
+ default:
+ DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type ));
+ goto err_exit;
+ }
+
+ /*
+ * Create the bind response struct.
+ */
+
+ /* If the requested abstract synt uuid doesn't match our client pipe,
+ reject the bind_ack & set the transfer interface synt to all 0's,
+ ver 0 (observed when NT5 attempts to bind to abstract interfaces
+ unknown to NT4)
+ Needed when adding entries to a DACL from NT5 - SK */
+
+ if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
+ hdr_rb.rpc_context[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,
+ &hdr_rb.rpc_context[0].transfer[0]);
+ } else {
+ RPC_IFACE null_interface;
+ ZERO_STRUCT(null_interface);
+ /* 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_interface);
+ 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;
+ }
+
+ /*
+ * Create the header, now we know the length.
+ */
+
+ if (prs_offset(&out_auth)) {
+ auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
+ }
+
+ init_rpc_hdr(&p->hdr, RPC_BINDACK, RPC_FLG_FIRST | RPC_FLG_LAST,
+ p->hdr.call_id,
+ RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
+ auth_len);
+
+ /*
+ * Marshall the header into the outgoing PDU.
+ */
+
+ if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
+ DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
+ goto err_exit;
+ }
+
+ /*
+ * Now add the RPC_HDR_BA and any auth needed.
+ */
+
+ if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
+ DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
+ goto err_exit;
+ }
+
+ if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
+ DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
+ goto err_exit;
+ }
+
+ /*
+ * Setup the lengths for the initial reply.
+ */
+
+ p->out_data.data_sent_length = 0;
+ p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
+ p->out_data.current_pdu_sent = 0;
+
+ prs_mem_free(&out_hdr_ba);
+ prs_mem_free(&out_auth);
+
+ return True;
+
+ err_exit:
+
+ prs_mem_free(&outgoing_rpc);
+ prs_mem_free(&out_hdr_ba);
+ prs_mem_free(&out_auth);
+ return setup_bind_nak(p);
+}
+
+/****************************************************************************
+ Deal with an alter context call. Can be third part of 3 leg auth request for
+ SPNEGO calls.
+****************************************************************************/
+
+BOOL api_pipe_alter_context(pipes_struct *p, prs_struct *rpc_in_p)
+{
+ RPC_HDR_BA hdr_ba;
+ RPC_HDR_RB hdr_rb;
+ RPC_HDR_AUTH auth_info;
+ uint16 assoc_gid;
+ fstring ack_pipe_name;
+ prs_struct out_hdr_ba;
+ prs_struct out_auth;
+ prs_struct outgoing_rpc;
+ int auth_len = 0;
+
+ prs_init( &outgoing_rpc, 0, 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.
+ */
+
+ prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
+
+ /*
+ * 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(&outgoing_rpc);
+ 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(&outgoing_rpc);
+ prs_mem_free(&out_hdr_ba);
+ return False;
+ }
+
+ DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__));
+
+ /* decode the alter context request */
+ if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
+ DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
+ 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,"");
+
+ DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));
+
+ /*
+ * Check if this is an authenticated alter context request.
+ */
+
+ if (p->hdr.auth_len != 0) {
+ /*
+ * Decode the authentication verifier.
+ */
+
+ 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
+ * response in place of the NTLMSSP auth3 type.
+ */
+
+ if (auth_info.auth_type == RPC_SPNEGO_AUTH_TYPE) {
+ /* We can only finish if the pipe is unbound. */
+ if (!p->pipe_bound) {
+ if (!pipe_spnego_auth_bind_continue(p, rpc_in_p, &auth_info, &out_auth)) {
+ goto err_exit;
+ }
+ } else {
+ goto err_exit;
+ }
+ }
+ } else {
+ ZERO_STRUCT(auth_info);
+ }
+
+ assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
+
+ /*
+ * Create the bind response struct.
+ */
+
+ /* If the requested abstract synt uuid doesn't match our client pipe,
+ reject the bind_ack & set the transfer interface synt to all 0's,
+ ver 0 (observed when NT5 attempts to bind to abstract interfaces
+ unknown to NT4)
+ Needed when adding entries to a DACL from NT5 - SK */
+
+ if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
+ hdr_rb.rpc_context[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,
+ &hdr_rb.rpc_context[0].transfer[0]);
+ } else {
+ RPC_IFACE null_interface;
+ ZERO_STRUCT(null_interface);
+ /* 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_interface);
+ p->pipe_bound = False;
+ }
+
+ /*
+ * 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;
+ }
+
+ /*
+ * Create the header, now we know the length.
+ */
+
+ if (prs_offset(&out_auth)) {
+ auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
+ }
+
+ init_rpc_hdr(&p->hdr, RPC_ALTCONTRESP, RPC_FLG_FIRST | RPC_FLG_LAST,
+ p->hdr.call_id,
+ RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
+ auth_len);
+
+ /*
+ * Marshall the header into the outgoing PDU.
+ */
+
+ if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
+ DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
+ goto err_exit;
+ }
+
+ /*
+ * Now add the RPC_HDR_BA and any auth needed.
+ */
+
+ if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
+ DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
+ goto err_exit;
+ }
+
+ if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
+ DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
+ goto err_exit;
+ }
+
+ /*
+ * Setup the lengths for the initial reply.
+ */
+
+ p->out_data.data_sent_length = 0;
+ p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
+ p->out_data.current_pdu_sent = 0;
+
+ prs_mem_free(&out_hdr_ba);
+ prs_mem_free(&out_auth);
+
+ return True;
+
+ err_exit:
+
+ prs_mem_free(&outgoing_rpc);
+ 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);
+ 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 == PIPE_AUTH_LEVEL_NONE || p->auth.auth_level == PIPE_AUTH_LEVEL_CONNECT) {
+ return True;
+ }
+
+ if (!a) {
+ *pstatus = NT_STATUS_INVALID_PARAMETER;
+ return False;
+ }
+
+ /* Ensure there's enough data for an authenticated request. */
+ if ((auth_len > RPC_MAX_SIGN_SIZE) ||
+ (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.
+ */
+
+ 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. */
+ if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
+ DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
+ (unsigned int)RPC_HDR_REQ_LEN + (unsigned int)data_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;
+ }
+
+ 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 PIPE_AUTH_LEVEL_PRIVACY:
+ /* Data is encrypted. */
+ *pstatus = ntlmssp_unseal_packet(a->ntlmssp_state,
+ data, data_len,
+ full_packet_data,
+ full_packet_data_len,
+ &auth_blob);
+ if (!NT_STATUS_IS_OK(*pstatus)) {
+ return False;
+ }
+ break;
+ case PIPE_AUTH_LEVEL_INTEGRITY:
+ /* Data is signed. */
+ *pstatus = ntlmssp_check_packet(a->ntlmssp_state,
+ 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;
+ RPC_AUTH_SCHANNEL_CHK schannel_chk;
+
+ auth_len = p->hdr.auth_len;
+
+ if (auth_len != RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_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.
+ */
+
+ 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));
+
+ if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
+ DEBUG(0,("cannot move offset to %u.\n",
+ (unsigned int)RPC_HDR_REQ_LEN + data_len ));
+ return False;
+ }
+
+ if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
+ DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
+ return False;
+ }
+
+ if (auth_info.auth_type != RPC_SCHANNEL_AUTH_TYPE) {
+ DEBUG(0,("Invalid auth info %d on schannel\n",
+ auth_info.auth_type));
+ return False;
+ }
+
+ if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN, &schannel_chk, rpc_in, 0)) {
+ DEBUG(0,("failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
+ return False;
+ }
+
+ if (!schannel_decode(p->auth.a_u.schannel_auth,
+ p->auth.auth_level,
+ SENDER_IS_INITIATOR,
+ &schannel_chk,
+ prs_data_p(rpc_in)+RPC_HDR_REQ_LEN, data_len)) {
+ DEBUG(3,("failed to decode PDU\n"));
+ 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;
+ }
+
+ /* The sequence number gets incremented on both send and receive. */
+ p->auth.a_u.schannel_auth->seq_num++;
+
+ /*
+ * 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;
+}
+
+/****************************************************************************
+ Return a user struct for a pipe user.
+****************************************************************************/
+
+struct current_user *get_current_user(struct current_user *user, pipes_struct *p)
+{
+ if (p->pipe_bound &&
+ (p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP ||
+ (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
+ memcpy(user, &p->pipe_user, sizeof(struct current_user));
+ } else {
+ memcpy(user, ¤t_user, sizeof(struct current_user));
+ }
+
+ return user;
+}
+
+/****************************************************************************
+ Find the set of RPC functions associated with this context_id
+****************************************************************************/
+
+static PIPE_RPC_FNS* find_pipe_fns_by_context( PIPE_RPC_FNS *list, uint32 context_id )
+{
+ PIPE_RPC_FNS *fns = NULL;
+ PIPE_RPC_FNS *tmp = NULL;
+
+ if ( !list ) {
+ DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
+ return NULL;
+ }
+
+ for (tmp=list; tmp; tmp=tmp->next ) {
+ if ( tmp->context_id == context_id )
+ break;
+ }
+
+ fns = tmp;
+
+ return fns;
+}
+
+/****************************************************************************
+ Memory cleanup.
+****************************************************************************/
+
+void free_pipe_rpc_context( PIPE_RPC_FNS *list )
+{
+ PIPE_RPC_FNS *tmp = list;
+ PIPE_RPC_FNS *tmp2;
+
+ while (tmp) {
+ tmp2 = tmp->next;
+ SAFE_FREE(tmp);
+ tmp = tmp2;
+ }
+
+ return;
+}
+
+/****************************************************************************
+ Find the correct RPC function to call for this request.
+ If the pipe is authenticated then become the correct UNIX user
+ before doing the call.
+****************************************************************************/
+
+BOOL api_pipe_request(pipes_struct *p)
+{
+ BOOL ret = False;
+ BOOL changed_user = False;
+ PIPE_RPC_FNS *pipe_fns;
+
+ if (p->pipe_bound &&
+ ((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);
+ return False;
+ }
+ changed_user = True;
+ }
+
+ DEBUG(5, ("Requested \\PIPE\\%s\n", p->name));
+
+ /* get the set of RPC functions for this context */
+
+ pipe_fns = find_pipe_fns_by_context(p->contexts, p->hdr_req.context_id);
+
+ if ( pipe_fns ) {
+ set_current_rpc_talloc(p->mem_ctx);
+ ret = api_rpcTNP(p, p->name, pipe_fns->cmds, pipe_fns->n_cmds);
+ set_current_rpc_talloc(NULL);
+ }
+ else {
+ DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
+ p->hdr_req.context_id, p->name));
+ }
+
+ if (changed_user) {
+ unbecome_authenticated_pipe_user();
+ }
+
+ return ret;
+}
+
+/*******************************************************************
+ Calls the underlying RPC function for a named pipe.
+ ********************************************************************/
+
+BOOL api_rpcTNP(pipes_struct *p, const char *rpc_name,
+ const struct api_struct *api_rpc_cmds, int n_cmds)
+{
+ int fn_num;
+ fstring name;
+ uint32 offset1, offset2;
+
+ /* interpret the command */
+ DEBUG(4,("api_rpcTNP: %s op 0x%x - ", rpc_name, p->hdr_req.opnum));
+
+ slprintf(name, sizeof(name)-1, "in_%s", rpc_name);
+ prs_dump(name, p->hdr_req.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));
+ break;
+ }
+ }
+
+ if (fn_num == n_cmds) {
+ /*
+ * For an unknown RPC just return a fault PDU but
+ * return True to allow RPC's on the pipe to continue
+ * and not put the pipe into fault state. JRA.
+ */
+ DEBUG(4, ("unknown\n"));
+ setup_fault_pdu(p, NT_STATUS(0x1c010002));
+ return True;
+ }
+
+ offset1 = prs_offset(&p->out_data.rdata);
+
+ DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
+ fn_num, api_rpc_cmds[fn_num].fn));
+ /* do the actual command */
+ if(!api_rpc_cmds[fn_num].fn(p)) {
+ DEBUG(0,("api_rpcTNP: %s: %s failed.\n", rpc_name, api_rpc_cmds[fn_num].name));
+ prs_mem_free(&p->out_data.rdata);
+ return False;
+ }
+
+ if (p->bad_handle_fault_state) {
+ DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
+ p->bad_handle_fault_state = False;
+ setup_fault_pdu(p, NT_STATUS(0x1C00001A));
+ return True;
+ }
+
+ slprintf(name, sizeof(name)-1, "out_%s", rpc_name);
+ offset2 = prs_offset(&p->out_data.rdata);
+ prs_set_offset(&p->out_data.rdata, offset1);
+ prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
+ prs_set_offset(&p->out_data.rdata, offset2);
+
+ DEBUG(5,("api_rpcTNP: called %s successfully\n", rpc_name));
+
+ /* Check for buffer underflow in rpc parsing */
+
+ if ((DEBUGLEVEL >= 10) &&
+ (prs_offset(&p->in_data.data) != prs_data_size(&p->in_data.data))) {
+ size_t data_len = prs_data_size(&p->in_data.data) - prs_offset(&p->in_data.data);
+ char *data = SMB_MALLOC(data_len);
+
+ DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
+ if (data) {
+ prs_uint8s(False, "", &p->in_data.data, 0, (unsigned char *)data, (uint32)data_len);
+ SAFE_FREE(data);
+ }
+
+ }
+
+ return True;
+}
+
+/*******************************************************************
+*******************************************************************/
+
+void get_pipe_fns( int idx, struct api_struct **fns, int *n_fns )
+{
+ struct api_struct *cmds = NULL;
+ int n_cmds = 0;
+
+ switch ( idx ) {
+ case PI_LSARPC:
+ lsa_get_pipe_fns( &cmds, &n_cmds );
+ break;
+ case PI_LSARPC_DS:
+ lsa_ds_get_pipe_fns( &cmds, &n_cmds );
+ break;
+ case PI_SAMR:
+ samr_get_pipe_fns( &cmds, &n_cmds );
+ break;
+ case PI_NETLOGON:
+ netlog_get_pipe_fns( &cmds, &n_cmds );
+ break;
+ case PI_SRVSVC:
+ srvsvc_get_pipe_fns( &cmds, &n_cmds );
+ break;
+ case PI_WKSSVC:
+ wkssvc_get_pipe_fns( &cmds, &n_cmds );
+ break;
+ case PI_WINREG:
+ reg_get_pipe_fns( &cmds, &n_cmds );
+ break;
+ case PI_SPOOLSS:
+ spoolss_get_pipe_fns( &cmds, &n_cmds );
+ break;
+ case PI_NETDFS:
+ netdfs_get_pipe_fns( &cmds, &n_cmds );
+ break;
+ case PI_SVCCTL:
+ svcctl_get_pipe_fns( &cmds, &n_cmds );
+ break;
+ case PI_EVENTLOG:
+ eventlog_get_pipe_fns( &cmds, &n_cmds );
+ break;
+ case PI_NTSVCS:
+ ntsvcs_get_pipe_fns( &cmds, &n_cmds );
+ break;
+#ifdef DEVELOPER
+ case PI_ECHO:
+ echo_get_pipe_fns( &cmds, &n_cmds );
+ break;
+#endif
+ default:
+ DEBUG(0,("get_pipe_fns: Unknown pipe index! [%d]\n", idx));
+ }
+
+ *fns = cmds;
+ *n_fns = n_cmds;
+
+ return;
+}
projects / samba / blobdiff