diff options
Diffstat (limited to 'source/rpc_client/cli_pipe.c')
| -rw-r--r-- | source/rpc_client/cli_pipe.c | 1651 |
1 files changed, 0 insertions, 1651 deletions
diff --git a/source/rpc_client/cli_pipe.c b/source/rpc_client/cli_pipe.c deleted file mode 100644 index df0d37a4631..00000000000 --- a/source/rpc_client/cli_pipe.c +++ /dev/null @@ -1,1651 +0,0 @@ -/* - * Unix SMB/CIFS implementation. - * RPC Pipe client / server routines - * Copyright (C) Andrew Tridgell 1992-1998, - * Copyright (C) Luke Kenneth Casson Leighton 1996-1998, - * Copyright (C) Paul Ashton 1998. - * Copyright (C) Jeremy Allison 1999. - * Copyright (C) Andrew Bartlett 2003. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include "includes.h" - -#undef DBGC_CLASS -#define DBGC_CLASS DBGC_RPC_CLI - -extern struct pipe_id_info pipe_names[]; - -/* convert pipe auth flags into the RPC auth type and level */ - -void get_auth_type_level(int pipe_auth_flags, int *auth_type, int *auth_level) -{ - *auth_type = 0; - *auth_level = 0; - if (pipe_auth_flags & AUTH_PIPE_SEAL) { - *auth_level = RPC_PIPE_AUTH_SEAL_LEVEL; - } else if (pipe_auth_flags & AUTH_PIPE_SIGN) { - *auth_level = RPC_PIPE_AUTH_SIGN_LEVEL; - } - - if (pipe_auth_flags & AUTH_PIPE_NETSEC) { - *auth_type = NETSEC_AUTH_TYPE; - } else if (pipe_auth_flags & AUTH_PIPE_NTLMSSP) { - *auth_type = NTLMSSP_AUTH_TYPE; - } -} - -/******************************************************************** - Rpc pipe call id. - ********************************************************************/ - -static uint32 get_rpc_call_id(void) -{ - static uint32 call_id = 0; - return ++call_id; -} - -/******************************************************************* - Use SMBreadX to get rest of one fragment's worth of rpc data. - ********************************************************************/ - -static BOOL rpc_read(struct cli_state *cli, prs_struct *rdata, uint32 data_to_read, uint32 *rdata_offset) -{ - size_t size = (size_t)cli->max_recv_frag; - int stream_offset = 0; - int num_read; - char *pdata; - int extra_data_size = ((int)*rdata_offset) + ((int)data_to_read) - (int)prs_data_size(rdata); - - DEBUG(5,("rpc_read: data_to_read: %u rdata offset: %u extra_data_size: %d\n", - (int)data_to_read, (unsigned int)*rdata_offset, extra_data_size)); - - /* - * Grow the buffer if needed to accommodate the data to be read. - */ - - if (extra_data_size > 0) { - if(!prs_force_grow(rdata, (uint32)extra_data_size)) { - DEBUG(0,("rpc_read: Failed to grow parse struct by %d bytes.\n", extra_data_size )); - return False; - } - DEBUG(5,("rpc_read: grew buffer by %d bytes to %u\n", extra_data_size, prs_data_size(rdata) )); - } - - pdata = prs_data_p(rdata) + *rdata_offset; - - do /* read data using SMBreadX */ - { - uint32 ecode; - uint8 eclass; - - if (size > (size_t)data_to_read) - size = (size_t)data_to_read; - - num_read = (int)cli_read(cli, cli->nt_pipe_fnum, pdata, (off_t)stream_offset, size); - - DEBUG(5,("rpc_read: num_read = %d, read offset: %d, to read: %d\n", - num_read, stream_offset, data_to_read)); - - if (cli_is_dos_error(cli)) { - cli_dos_error(cli, &eclass, &ecode); - if (eclass != ERRDOS && ecode != ERRmoredata) { - DEBUG(0,("rpc_read: Error %d/%u in cli_read\n", - eclass, (unsigned int)ecode)); - return False; - } - } - - data_to_read -= num_read; - stream_offset += num_read; - pdata += num_read; - - } while (num_read > 0 && data_to_read > 0); - /* && err == (0x80000000 | STATUS_BUFFER_OVERFLOW)); */ - - /* - * Update the current offset into rdata by the amount read. - */ - *rdata_offset += stream_offset; - - return True; -} - -/**************************************************************************** - Checks the header. This will set the endian bit in the rdata prs_struct. JRA. - ****************************************************************************/ - -static BOOL rpc_check_hdr(prs_struct *rdata, RPC_HDR *rhdr, - BOOL *first, BOOL *last, uint32 *len) -{ - DEBUG(5,("rpc_check_hdr: rdata->data_size = %u\n", (uint32)prs_data_size(rdata) )); - - /* Next call sets endian bit. */ - - if(!smb_io_rpc_hdr("rpc_hdr ", rhdr, rdata, 0)) { - DEBUG(0,("rpc_check_hdr: Failed to unmarshall RPC_HDR.\n")); - return False; - } - - if (prs_offset(rdata) != RPC_HEADER_LEN) { - DEBUG(0,("rpc_check_hdr: offset was %x, should be %x.\n", prs_offset(rdata), RPC_HEADER_LEN)); - return False; - } - - (*first) = ((rhdr->flags & RPC_FLG_FIRST) != 0); - (*last) = ((rhdr->flags & RPC_FLG_LAST ) != 0); - (*len) = (uint32)rhdr->frag_len - prs_data_size(rdata); - - return (rhdr->pkt_type != RPC_FAULT); -} - -/**************************************************************************** - Verify data on an rpc pipe. - The VERIFY & SEAL code is only executed on packets that look like this : - - Request/Response PDU's look like the following... - - |<------------------PDU len----------------------------------------------->| - |<-HDR_LEN-->|<--REQ LEN------>|.............|<-AUTH_HDRLEN->|<-AUTH_LEN-->| - - +------------+-----------------+-------------+---------------+-------------+ - | RPC HEADER | REQ/RESP HEADER | DATA ...... | AUTH_HDR | AUTH DATA | - +------------+-----------------+-------------+---------------+-------------+ - - Never on bind requests/responses. - ****************************************************************************/ - -static BOOL rpc_auth_pipe(struct cli_state *cli, prs_struct *rdata, - uint32 fragment_start, int len, int auth_len, uint8 pkt_type, - int *pauth_padding_len) -{ - - /* - * The following is that length of the data we must sign or seal. - * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN - * preceeding the auth_data. - */ - - int data_len = len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - auth_len; - - /* - * The start of the data to sign/seal is just after the RPC headers. - */ - char *reply_data = prs_data_p(rdata) + fragment_start + RPC_HEADER_LEN + RPC_HDR_REQ_LEN; - - RPC_HDR_AUTH rhdr_auth; - - char *dp = prs_data_p(rdata) + fragment_start + len - - RPC_HDR_AUTH_LEN - auth_len; - prs_struct auth_verf; - - *pauth_padding_len = 0; - - if (auth_len == 0) { - if (cli->pipe_auth_flags == 0) { - /* move along, nothing to see here */ - return True; - } - - DEBUG(2, ("No authenticaton header recienved on reply, but this pipe is authenticated\n")); - return False; - } - - DEBUG(5,("rpc_auth_pipe: pkt_type: %d len: %d auth_len: %d NTLMSSP %s schannel %s sign %s seal %s \n", - pkt_type, len, auth_len, - BOOLSTR(cli->pipe_auth_flags & AUTH_PIPE_NTLMSSP), - BOOLSTR(cli->pipe_auth_flags & AUTH_PIPE_NETSEC), - BOOLSTR(cli->pipe_auth_flags & AUTH_PIPE_SIGN), - BOOLSTR(cli->pipe_auth_flags & AUTH_PIPE_SEAL))); - - if (dp - prs_data_p(rdata) > prs_data_size(rdata)) { - DEBUG(0,("rpc_auth_pipe: schannel auth data > data size !\n")); - return False; - } - - DEBUG(10,("rpc_auth_pipe: packet:\n")); - dump_data(100, dp, auth_len); - - prs_init(&auth_verf, 0, cli->mem_ctx, UNMARSHALL); - - /* The endinness must be preserved. JRA. */ - prs_set_endian_data( &auth_verf, rdata->bigendian_data); - - /* Point this new parse struct at the auth section of the main - parse struct - rather than copying it. Avoids needing to - free it on every error - */ - prs_give_memory(&auth_verf, dp, RPC_HDR_AUTH_LEN + auth_len, False /* not dynamic */); - prs_set_offset(&auth_verf, 0); - - { - int auth_type; - int auth_level; - if (!smb_io_rpc_hdr_auth("auth_hdr", &rhdr_auth, &auth_verf, 0)) { - DEBUG(0, ("rpc_auth_pipe: Could not parse auth header\n")); - return False; - } - - /* Let the caller know how much padding at the end of the data */ - *pauth_padding_len = rhdr_auth.padding; - - /* Check it's the type of reply we were expecting to decode */ - - get_auth_type_level(cli->pipe_auth_flags, &auth_type, &auth_level); - if (rhdr_auth.auth_type != auth_type) { - DEBUG(0, ("BAD auth type %d (should be %d)\n", - rhdr_auth.auth_type, auth_type)); - return False; - } - - if (rhdr_auth.auth_level != auth_level) { - DEBUG(0, ("BAD auth level %d (should be %d)\n", - rhdr_auth.auth_level, auth_level)); - return False; - } - } - - if (pkt_type == RPC_BINDACK) { - if (cli->pipe_auth_flags & AUTH_PIPE_NTLMSSP) { - /* copy the next auth_len bytes into a buffer for - later use */ - - DATA_BLOB ntlmssp_verf = data_blob(NULL, auth_len); - BOOL store_ok; - - /* save the reply away, for use a little later */ - prs_copy_data_out((char *)ntlmssp_verf.data, &auth_verf, auth_len); - - store_ok = (NT_STATUS_IS_OK(ntlmssp_store_response(cli->ntlmssp_pipe_state, - ntlmssp_verf))); - - data_blob_free(&ntlmssp_verf); - return store_ok; - } - else if (cli->pipe_auth_flags & AUTH_PIPE_NETSEC) { - /* nothing to do here - we don't seem to be able to - validate the bindack based on VL's comments */ - return True; - } - } - - if (cli->pipe_auth_flags & AUTH_PIPE_NTLMSSP) { - NTSTATUS nt_status; - DATA_BLOB sig; - if ((cli->pipe_auth_flags & AUTH_PIPE_SIGN) || - (cli->pipe_auth_flags & AUTH_PIPE_SEAL)) { - if (auth_len != RPC_AUTH_NTLMSSP_CHK_LEN) { - DEBUG(0,("rpc_auth_pipe: wrong ntlmssp auth len %d\n", auth_len)); - return False; - } - sig = data_blob(NULL, auth_len); - prs_copy_data_out((char *)sig.data, &auth_verf, auth_len); - } - - /* - * Unseal any sealed data in the PDU, not including the - * 8 byte auth_header or the auth_data. - */ - - /* - * Now unseal and check the auth verifier in the auth_data at - * the end of the packet. - */ - - if (cli->pipe_auth_flags & AUTH_PIPE_SEAL) { - if (data_len < 0) { - DEBUG(1, ("Can't unseal - data_len < 0!!\n")); - return False; - } - nt_status = ntlmssp_unseal_packet(cli->ntlmssp_pipe_state, - (unsigned char *)reply_data, data_len, - &sig); - } - else if (cli->pipe_auth_flags & AUTH_PIPE_SIGN) { - nt_status = ntlmssp_check_packet(cli->ntlmssp_pipe_state, - (const unsigned char *)reply_data, data_len, - &sig); - } - - data_blob_free(&sig); - - if (!NT_STATUS_IS_OK(nt_status)) { - DEBUG(0, ("rpc_auth_pipe: could not validate " - "incoming NTLMSSP packet!\n")); - return False; - } - } - - if (cli->pipe_auth_flags & AUTH_PIPE_NETSEC) { - RPC_AUTH_NETSEC_CHK chk; - - if (auth_len != RPC_AUTH_NETSEC_CHK_LEN) { - DEBUG(0,("rpc_auth_pipe: wrong schannel auth len %d\n", auth_len)); - return False; - } - - if (!smb_io_rpc_auth_netsec_chk("schannel_auth_sign", - &chk, &auth_verf, 0)) { - DEBUG(0, ("rpc_auth_pipe: schannel unmarshalling " - "RPC_AUTH_NETSECK_CHK failed\n")); - return False; - } - - if (!netsec_decode(&cli->auth_info, - cli->pipe_auth_flags, - SENDER_IS_ACCEPTOR, - &chk, reply_data, data_len)) { - DEBUG(0, ("rpc_auth_pipe: Could not decode schannel\n")); - return False; - } - - cli->auth_info.seq_num++; - - } - return True; -} - - -/**************************************************************************** - Send data on an rpc pipe via trans, which *must* be the last fragment. - receive response data from an rpc pipe, which may be large... - - Read the first fragment: unfortunately have to use SMBtrans for the first - bit, then SMBreadX for subsequent bits. - - If first fragment received also wasn't the last fragment, continue - getting fragments until we _do_ receive the last fragment. - - Request/Response PDU's look like the following... - - |<------------------PDU len----------------------------------------------->| - |<-HDR_LEN-->|<--REQ LEN------>|.............|<-AUTH_HDRLEN->|<-AUTH_LEN-->| - - +------------+-----------------+-------------+---------------+-------------+ - | RPC HEADER | REQ/RESP HEADER | DATA ...... | AUTH_HDR | AUTH DATA | - +------------+-----------------+-------------+---------------+-------------+ - - Where the presence of the AUTH_HDR and AUTH are dependent on the - signing & sealing being negotiated. - - ****************************************************************************/ - -static BOOL rpc_api_pipe(struct cli_state *cli, prs_struct *data, prs_struct *rdata, - uint8 expected_pkt_type) -{ - uint32 len; - char *rparam = NULL; - uint32 rparam_len = 0; - uint16 setup[2]; - BOOL first = True; - BOOL last = True; - RPC_HDR rhdr; - char *pdata = data ? prs_data_p(data) : NULL; - uint32 data_len = data ? prs_offset(data) : 0; - char *prdata = NULL; - uint32 rdata_len = 0; - uint32 current_offset = 0; - uint32 fragment_start = 0; - uint32 max_data = cli->max_xmit_frag ? cli->max_xmit_frag : 1024; - int auth_padding_len = 0; - - /* Create setup parameters - must be in native byte order. */ - - setup[0] = TRANSACT_DCERPCCMD; - setup[1] = cli->nt_pipe_fnum; /* Pipe file handle. */ - - DEBUG(5,("rpc_api_pipe: fnum:%x\n", (int)cli->nt_pipe_fnum)); - - /* Send the RPC request and receive a response. For short RPC - calls (about 1024 bytes or so) the RPC request and response - appears in a SMBtrans request and response. Larger RPC - responses are received further on. */ - - if (!cli_api_pipe(cli, "\\PIPE\\", - setup, 2, 0, /* Setup, length, max */ - NULL, 0, 0, /* Params, length, max */ - pdata, data_len, max_data, /* data, length, max */ - &rparam, &rparam_len, /* return params, len */ - &prdata, &rdata_len)) /* return data, len */ - { - DEBUG(0, ("cli_pipe: return critical error. Error was %s\n", cli_errstr(cli))); - return False; - } - - /* Throw away returned params - we know we won't use them. */ - - SAFE_FREE(rparam); - - if (prdata == NULL) { - DEBUG(0,("rpc_api_pipe: pipe %x failed to return data.\n", - (int)cli->nt_pipe_fnum)); - return False; - } - - /* - * Give this memory as dynamically allocated to the return parse - * struct. - */ - - prs_give_memory(rdata, prdata, rdata_len, True); - current_offset = rdata_len; - - /* This next call sets the endian bit correctly in rdata. */ - - if (!rpc_check_hdr(rdata, &rhdr, &first, &last, &len)) { - prs_mem_free(rdata); - return False; - } - - if (rhdr.pkt_type == RPC_BINDACK) { - if (!last && !first) { - DEBUG(5,("rpc_api_pipe: bug in server (AS/U?), setting fragment first/last ON.\n")); - first = True; - last = True; - } - } - - if (rhdr.pkt_type == RPC_BINDNACK) { - DEBUG(3, ("Bind NACK received on pipe %x!\n", (int)cli->nt_pipe_fnum)); - prs_mem_free(rdata); - return False; - } - - if (rhdr.pkt_type == RPC_RESPONSE) { - RPC_HDR_RESP rhdr_resp; - if(!smb_io_rpc_hdr_resp("rpc_hdr_resp", &rhdr_resp, rdata, 0)) { - DEBUG(5,("rpc_api_pipe: failed to unmarshal RPC_HDR_RESP.\n")); - prs_mem_free(rdata); - return False; - } - } - - if (rhdr.pkt_type != expected_pkt_type) { - DEBUG(3, ("Connection to pipe %x got an unexpected RPC packet type - %d, not %d\n", (int)cli->nt_pipe_fnum, rhdr.pkt_type, expected_pkt_type)); - prs_mem_free(rdata); - return False; - } - - DEBUG(5,("rpc_api_pipe: len left: %u smbtrans read: %u\n", - (unsigned int)len, (unsigned int)rdata_len )); - - /* check if data to be sent back was too large for one SMBtrans */ - /* err status is only informational: the _real_ check is on the - length */ - - if (len > 0) { - /* || err == (0x80000000 | STATUS_BUFFER_OVERFLOW)) */ - - /* Read the remaining part of the first response fragment */ - - if (!rpc_read(cli, rdata, len, ¤t_offset)) { - prs_mem_free(rdata); - return False; - } - } - - /* - * Now we have a complete PDU, check the auth struct if any was sent. - */ - - if(!rpc_auth_pipe(cli, rdata, fragment_start, rhdr.frag_len, - rhdr.auth_len, rhdr.pkt_type, &auth_padding_len)) { - prs_mem_free(rdata); - return False; - } - - if (rhdr.auth_len != 0) { - /* - * Drop the auth footers from the current offset. - * We need this if there are more fragments. - * The auth footers consist of the auth_data and the - * preceeding 8 byte auth_header. - */ - current_offset -= (auth_padding_len + RPC_HDR_AUTH_LEN + rhdr.auth_len); - } - - /* - * Only one rpc fragment, and it has been read. - */ - - if (first && last) { - DEBUG(6,("rpc_api_pipe: fragment first and last both set\n")); - return True; - } - - /* - * Read more fragments using SMBreadX until we get one with the - * last bit set. - */ - - while (!last) { - RPC_HDR_RESP rhdr_resp; - int num_read; - char hdr_data[RPC_HEADER_LEN+RPC_HDR_RESP_LEN]; - prs_struct hps; - uint8 eclass; - uint32 ecode; - - /* - * First read the header of the next PDU. - */ - - prs_init(&hps, 0, cli->mem_ctx, UNMARSHALL); - prs_give_memory(&hps, hdr_data, sizeof(hdr_data), False); - - num_read = cli_read(cli, cli->nt_pipe_fnum, hdr_data, 0, RPC_HEADER_LEN+RPC_HDR_RESP_LEN); - if (cli_is_dos_error(cli)) { - cli_dos_error(cli, &eclass, &ecode); - if (eclass != ERRDOS && ecode != ERRmoredata) { - DEBUG(0,("rpc_api_pipe: cli_read error : %d/%d\n", eclass, ecode)); - return False; - } - } - - DEBUG(5,("rpc_api_pipe: read header (size:%d)\n", num_read)); - - if (num_read != RPC_HEADER_LEN+RPC_HDR_RESP_LEN) { - DEBUG(0,("rpc_api_pipe: Error : requested %d bytes, got %d.\n", - RPC_HEADER_LEN+RPC_HDR_RESP_LEN, num_read )); - return False; - } - - /* This call sets the endianness in hps. */ - - if (!rpc_check_hdr(&hps, &rhdr, &first, &last, &len)) - return False; - - /* Ensure the endianness in rdata is set correctly - must be same as hps. */ - - if (hps.bigendian_data != rdata->bigendian_data) { - DEBUG(0,("rpc_api_pipe: Error : Endianness changed from %s to %s\n", - rdata->bigendian_data ? "big" : "little", - hps.bigendian_data ? "big" : "little" )); - return False; - } - - if(!smb_io_rpc_hdr_resp("rpc_hdr_resp", &rhdr_resp, &hps, 0)) { - DEBUG(0,("rpc_api_pipe: Error in unmarshalling RPC_HDR_RESP.\n")); - return False; - } - - if (first) { - DEBUG(0,("rpc_api_pipe: secondary PDU rpc header has 'first' set !\n")); - return False; - } - - /* - * Now read the rest of the PDU. - */ - - if (!rpc_read(cli, rdata, len, ¤t_offset)) { - prs_mem_free(rdata); - return False; - } - - fragment_start = current_offset - len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN; - - /* - * Verify any authentication footer. - */ - - - if(!rpc_auth_pipe(cli, rdata, fragment_start, rhdr.frag_len, - rhdr.auth_len, rhdr.pkt_type, &auth_padding_len)) { - prs_mem_free(rdata); - return False; - } - - if (rhdr.auth_len != 0 ) { - - /* - * Drop the auth footers from the current offset. - * The auth footers consist of the auth_data and the - * preceeding 8 byte auth_header. - * We need this if there are more fragments. - */ - current_offset -= (auth_padding_len + RPC_HDR_AUTH_LEN + rhdr.auth_len); - } - } - - return True; -} - -/******************************************************************* - creates a DCE/RPC bind request - - - initialises the parse structure. - - dynamically allocates the header data structure - - caller is expected to free the header data structure once used. - - ********************************************************************/ - -static NTSTATUS create_rpc_bind_req(struct cli_state *cli, prs_struct *rpc_out, - uint32 rpc_call_id, - RPC_IFACE *abstract, RPC_IFACE *transfer, - const char *my_name, const char *domain) -{ - RPC_HDR hdr; - RPC_HDR_RB hdr_rb; - RPC_HDR_AUTH hdr_auth; - int auth_len = 0; - int auth_type, auth_level; - size_t saved_hdr_offset = 0; - - prs_struct auth_info; - prs_init(&auth_info, RPC_HDR_AUTH_LEN, /* we will need at least this much */ - prs_get_mem_context(rpc_out), MARSHALL); - - if (cli->pipe_auth_flags) { - get_auth_type_level(cli->pipe_auth_flags, &auth_type, &auth_level); - - /* - * Create the auth structs we will marshall. - */ - - init_rpc_hdr_auth(&hdr_auth, auth_type, auth_level, 0x00, 1); - - /* - * Now marshall the data into the temporary parse_struct. - */ - - if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, &auth_info, 0)) { - DEBUG(0,("create_rpc_bind_req: failed to marshall RPC_HDR_AUTH.\n")); - prs_mem_free(&auth_info); - return NT_STATUS_NO_MEMORY; - } - saved_hdr_offset = prs_offset(&auth_info); - } - - if (cli->pipe_auth_flags & AUTH_PIPE_NTLMSSP) { - - NTSTATUS nt_status; - DATA_BLOB null_blob = data_blob(NULL, 0); - DATA_BLOB request; - - DEBUG(5, ("Processing NTLMSSP Negotiate\n")); - nt_status = ntlmssp_update(cli->ntlmssp_pipe_state, - null_blob, - &request); - - if (!NT_STATUS_EQUAL(nt_status, - NT_STATUS_MORE_PROCESSING_REQUIRED)) { - prs_mem_free(&auth_info); - return nt_status; - } - - /* Auth len in the rpc header doesn't include auth_header. */ - auth_len = request.length; - prs_copy_data_in(&auth_info, (char *)request.data, request.length); - - DEBUG(5, ("NTLMSSP Negotiate:\n")); - dump_data(5, (const char *)request.data, request.length); - - data_blob_free(&request); - - } else if (cli->pipe_auth_flags & AUTH_PIPE_NETSEC) { - RPC_AUTH_NETSEC_NEG netsec_neg; - - /* Use lp_workgroup() if domain not specified */ - - if (!domain || !domain[0]) { - DEBUG(10,("create_rpc_bind_req: no domain; assuming my own\n")); - domain = lp_workgroup(); - } - - init_rpc_auth_netsec_neg(&netsec_neg, domain, my_name); - - /* - * Now marshall the data into the temporary parse_struct. - */ - - if(!smb_io_rpc_auth_netsec_neg("netsec_neg", - &netsec_neg, &auth_info, 0)) { - DEBUG(0,("Failed to marshall RPC_AUTH_NETSEC_NEG.\n")); - prs_mem_free(&auth_info); - return NT_STATUS_NO_MEMORY; - } - - /* Auth len in the rpc header doesn't include auth_header. */ - auth_len = prs_offset(&auth_info) - saved_hdr_offset; - } - - /* Create the request RPC_HDR */ - init_rpc_hdr(&hdr, RPC_BIND, 0x3, rpc_call_id, - RPC_HEADER_LEN + RPC_HDR_RB_LEN + prs_offset(&auth_info), - auth_len); - - if(!smb_io_rpc_hdr("hdr" , &hdr, rpc_out, 0)) { - DEBUG(0,("create_rpc_bind_req: failed to marshall RPC_HDR.\n")); - prs_mem_free(&auth_info); - return NT_STATUS_NO_MEMORY; - } - - /* create the bind request RPC_HDR_RB */ - init_rpc_hdr_rb(&hdr_rb, MAX_PDU_FRAG_LEN, MAX_PDU_FRAG_LEN, 0x0, - 0x1, 0x0, 0x1, abstract, transfer); - - /* Marshall the bind request data */ - if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_out, 0)) { - DEBUG(0,("create_rpc_bind_req: failed to marshall RPC_HDR_RB.\n")); - prs_mem_free(&auth_info); - return NT_STATUS_NO_MEMORY; - } - - /* - * Grow the outgoing buffer to store any auth info. - */ - - if(auth_len != 0) { - if(!prs_append_prs_data( rpc_out, &auth_info)) { - DEBUG(0,("create_rpc_bind_req: failed to grow parse struct to add auth.\n")); - prs_mem_free(&auth_info); - return NT_STATUS_NO_MEMORY; - } - } - prs_mem_free(&auth_info); - return NT_STATUS_OK; -} - -/******************************************************************* - Creates a DCE/RPC bind authentication response. - This is the packet that is sent back to the server once we - have received a BIND-ACK, to finish the third leg of - the authentication handshake. - ********************************************************************/ - -static NTSTATUS create_rpc_bind_resp(struct cli_state *cli, - uint32 rpc_call_id, - prs_struct *rpc_out) -{ - NTSTATUS nt_status; - RPC_HDR hdr; - RPC_HDR_AUTHA hdr_autha; - DATA_BLOB ntlmssp_null_response = data_blob(NULL, 0); - DATA_BLOB ntlmssp_reply; - int auth_type, auth_level; - - /* The response is picked up from the internal cache, - where it was placed by the rpc_auth_pipe() code */ - nt_status = ntlmssp_update(cli->ntlmssp_pipe_state, - ntlmssp_null_response, - &ntlmssp_reply); - - if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) { - return nt_status; - } - - /* Create the request RPC_HDR */ - init_rpc_hdr(&hdr, RPC_BINDRESP, 0x0, rpc_call_id, - RPC_HEADER_LEN + RPC_HDR_AUTHA_LEN + ntlmssp_reply.length, - ntlmssp_reply.length ); - - /* Marshall it. */ - if(!smb_io_rpc_hdr("hdr", &hdr, rpc_out, 0)) { - DEBUG(0,("create_rpc_bind_resp: failed to marshall RPC_HDR.\n")); - data_blob_free(&ntlmssp_reply); - return NT_STATUS_NO_MEMORY; - } - - get_auth_type_level(cli->pipe_auth_flags, &auth_type, &auth_level); - - /* Create the request RPC_HDR_AUTHA */ - init_rpc_hdr_autha(&hdr_autha, MAX_PDU_FRAG_LEN, MAX_PDU_FRAG_LEN, - auth_type, auth_level, 0x00); - - if(!smb_io_rpc_hdr_autha("hdr_autha", &hdr_autha, rpc_out, 0)) { - DEBUG(0,("create_rpc_bind_resp: failed to marshall RPC_HDR_AUTHA.\n")); - data_blob_free(&ntlmssp_reply); - return NT_STATUS_NO_MEMORY; - } - - /* - * Append the auth data to the outgoing buffer. - */ - - if(!prs_copy_data_in(rpc_out, (char *)ntlmssp_reply.data, ntlmssp_reply.length)) { - DEBUG(0,("create_rpc_bind_req: failed to grow parse struct to add auth.\n")); - data_blob_free(&ntlmssp_reply); - return NT_STATUS_NO_MEMORY; - } - - data_blob_free(&ntlmssp_reply); - return NT_STATUS_OK; -} - - -/******************************************************************* - Creates a DCE/RPC request. - ********************************************************************/ - -static uint32 create_rpc_request(prs_struct *rpc_out, uint8 op_num, int data_len, int auth_len, uint8 flags, uint32 oldid, uint32 data_left) -{ - uint32 alloc_hint; - RPC_HDR hdr; - RPC_HDR_REQ hdr_req; - uint32 callid = oldid ? oldid : get_rpc_call_id(); - - DEBUG(5,("create_rpc_request: opnum: 0x%x data_len: 0x%x\n", op_num, data_len)); - - /* create the rpc header RPC_HDR */ - init_rpc_hdr(&hdr, RPC_REQUEST, flags, - callid, data_len, auth_len); - - /* - * The alloc hint should be the amount of data, not including - * RPC headers & footers. - */ - - if (auth_len != 0) - alloc_hint = data_len - RPC_HEADER_LEN - RPC_HDR_AUTH_LEN - auth_len; - else - alloc_hint = data_len - RPC_HEADER_LEN; - - DEBUG(10,("create_rpc_request: data_len: %x auth_len: %x alloc_hint: %x\n", - data_len, auth_len, alloc_hint)); - - /* Create the rpc request RPC_HDR_REQ */ - init_rpc_hdr_req(&hdr_req, alloc_hint, op_num); - - /* stream-time... */ - if(!smb_io_rpc_hdr("hdr ", &hdr, rpc_out, 0)) - return 0; - - if(!smb_io_rpc_hdr_req("hdr_req", &hdr_req, rpc_out, 0)) - return 0; - - if (prs_offset(rpc_out) != RPC_HEADER_LEN + RPC_HDR_REQ_LEN) - return 0; - - return callid; -} - -/******************************************************************* - Puts an auth header into an rpc request. - ********************************************************************/ - -static BOOL create_auth_hdr(prs_struct *outgoing_packet, - int auth_type, - int auth_level, int padding) -{ - RPC_HDR_AUTH hdr_auth; - - init_rpc_hdr_auth(&hdr_auth, auth_type, auth_level, - padding, 1); - if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, - outgoing_packet, 0)) { - DEBUG(0,("create_auth_hdr:Failed to marshal RPC_HDR_AUTH.\n")); - return False; - } - return True; -} - -/** - * Send a request on an RPC pipe and get a response. - * - * @param data NDR contents of the request to be sent. - * @param rdata Unparsed NDR response data. -**/ - -BOOL rpc_api_pipe_req(struct cli_state *cli, uint8 op_num, - prs_struct *data, prs_struct *rdata) -{ - uint32 auth_len, real_auth_len, auth_hdr_len, max_data, data_left, data_sent; - NTSTATUS nt_status; - BOOL ret = False; - uint32 callid = 0; - fstring dump_name; - - auth_len = 0; - real_auth_len = 0; - auth_hdr_len = 0; - - if (cli->pipe_auth_flags & AUTH_PIPE_SIGN) { - if (cli->pipe_auth_flags & AUTH_PIPE_NTLMSSP) { - auth_len = RPC_AUTH_NTLMSSP_CHK_LEN; - } - if (cli->pipe_auth_flags & AUTH_PIPE_NETSEC) { - auth_len = RPC_AUTH_NETSEC_CHK_LEN; - } - auth_hdr_len = RPC_HDR_AUTH_LEN; - } - - /* - * calc how much actual data we can send in a PDU fragment - */ - max_data = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - - auth_hdr_len - auth_len - 8; - - for (data_left = prs_offset(data), data_sent = 0; data_left > 0;) { - prs_struct outgoing_packet; - prs_struct sec_blob; - uint32 data_len, send_size; - uint8 flags = 0; - uint32 auth_padding = 0; - DATA_BLOB sign_blob; - - /* - * how much will we send this time - */ - send_size = MIN(data_left, max_data); - - if (!prs_init(&sec_blob, send_size, /* will need at least this much */ - cli->mem_ctx, MARSHALL)) { - DEBUG(0,("Could not malloc %u bytes", - send_size+auth_padding)); - return False; - } - - if(!prs_append_some_prs_data(&sec_blob, data, - data_sent, send_size)) { - DEBUG(0,("Failed to append data to netsec blob\n")); - prs_mem_free(&sec_blob); - return False; - } - - /* - * NT expects the data that is sealed to be 8-byte - * aligned. The padding must be encrypted as well and - * taken into account when generating the - * authentication verifier. The amount of padding must - * be stored in the auth header. - */ - - if (cli->pipe_auth_flags) { - size_t data_and_padding_size; - int auth_type; - int auth_level; - prs_align_uint64(&sec_blob); - - get_auth_type_level(cli->pipe_auth_flags, &auth_type, &auth_level); - - data_and_padding_size = prs_offset(&sec_blob); - auth_padding = data_and_padding_size - send_size; - - /* insert the auth header */ - - if(!create_auth_hdr(&sec_blob, auth_type, auth_level, auth_padding)) { - prs_mem_free(&sec_blob); - return False; - } - - /* create an NTLMSSP signature */ - if (cli->pipe_auth_flags & AUTH_PIPE_NTLMSSP) { - /* - * Seal the outgoing data if requested. - */ - if (cli->pipe_auth_flags & AUTH_PIPE_SEAL) { - - nt_status = ntlmssp_seal_packet(cli->ntlmssp_pipe_state, - (unsigned char*)prs_data_p(&sec_blob), - data_and_padding_size, - &sign_blob); - if (!NT_STATUS_IS_OK(nt_status)) { - prs_mem_free(&sec_blob); - return False; - } - } - else if (cli->pipe_auth_flags & AUTH_PIPE_SIGN) { - - nt_status = ntlmssp_sign_packet(cli->ntlmssp_pipe_state, - (unsigned char*)prs_data_p(&sec_blob), - data_and_padding_size, &sign_blob); - if (!NT_STATUS_IS_OK(nt_status)) { - prs_mem_free(&sec_blob); - return False; - } - } - - - /* write auth footer onto the packet */ - real_auth_len = sign_blob.length; - - prs_copy_data_in(&sec_blob, (char *)sign_blob.data, sign_blob.length); - data_blob_free(&sign_blob); - - } - else if (cli->pipe_auth_flags & AUTH_PIPE_NETSEC) { - size_t parse_offset_marker; - RPC_AUTH_NETSEC_CHK verf; - DEBUG(10,("SCHANNEL seq_num=%d\n", cli->auth_info.seq_num)); - - netsec_encode(&cli->auth_info, - cli->pipe_auth_flags, - SENDER_IS_INITIATOR, - &verf, - prs_data_p(&sec_blob), - data_and_padding_size); - - cli->auth_info.seq_num++; - - /* write auth footer onto the packet */ - - parse_offset_marker = prs_offset(&sec_blob); - if (!smb_io_rpc_auth_netsec_chk("", &verf, - &sec_blob, 0)) { - prs_mem_free(&sec_blob); - return False; - } - real_auth_len = prs_offset(&sec_blob) - parse_offset_marker; - } - } - - data_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + prs_offset(&sec_blob); - - /* - * Malloc parse struct to hold it (and enough for alignments). - */ - if(!prs_init(&outgoing_packet, data_len + 8, - cli->mem_ctx, MARSHALL)) { - DEBUG(0,("rpc_api_pipe_req: Failed to malloc %u bytes.\n", (unsigned int)data_len )); - return False; - } - - if (data_left == prs_offset(data)) - flags |= RPC_FLG_FIRST; - - if (data_left <= max_data) - flags |= RPC_FLG_LAST; - /* - * Write out the RPC header and the request header. - */ - if(!(callid = create_rpc_request(&outgoing_packet, op_num, - data_len, real_auth_len, flags, - callid, data_left))) { - DEBUG(0,("rpc_api_pipe_req: Failed to create RPC request.\n")); - prs_mem_free(&outgoing_packet); - prs_mem_free(&sec_blob); - return False; - } - - prs_append_prs_data(&outgoing_packet, &sec_blob); - prs_mem_free(&sec_blob); - - DEBUG(100,("data_len: %x data_calc_len: %x\n", data_len, - prs_offset(&outgoing_packet))); - - if (flags & RPC_FLG_LAST) - ret = rpc_api_pipe(cli, &outgoing_packet, - rdata, RPC_RESPONSE); - else { - cli_write(cli, cli->nt_pipe_fnum, 0x0008, - prs_data_p(&outgoing_packet), - data_sent, data_len); - } - prs_mem_free(&outgoing_packet); - data_sent += send_size; - data_left -= send_size; - } - /* Also capture received data */ - slprintf(dump_name, sizeof(dump_name) - 1, "reply_%s", - cli_pipe_get_name(cli)); - prs_dump(dump_name, op_num, rdata); - - return ret; -} - -/**************************************************************************** - Set the handle state. -****************************************************************************/ - -static BOOL rpc_pipe_set_hnd_state(struct cli_state *cli, const char *pipe_name, uint16 device_state) -{ - BOOL state_set = False; - char param[2]; - uint16 setup[2]; /* only need 2 uint16 setup parameters */ - char *rparam = NULL; - char *rdata = NULL; - uint32 rparam_len, rdata_len; - - if (pipe_name == NULL) - return False; - - DEBUG(5,("Set Handle state Pipe[%x]: %s - device state:%x\n", - cli->nt_pipe_fnum, pipe_name, device_state)); - - /* create parameters: device state */ - SSVAL(param, 0, device_state); - - /* create setup parameters. */ - setup[0] = 0x0001; - setup[1] = cli->nt_pipe_fnum; /* pipe file handle. got this from an SMBOpenX. */ - - /* send the data on \PIPE\ */ - if (cli_api_pipe(cli, "\\PIPE\\", - setup, 2, 0, /* setup, length, max */ - param, 2, 0, /* param, length, max */ - NULL, 0, 1024, /* data, length, max */ - &rparam, &rparam_len, /* return param, length */ - &rdata, &rdata_len)) /* return data, length */ - { - DEBUG(5, ("Set Handle state: return OK\n")); - state_set = True; - } - - SAFE_FREE(rparam); - SAFE_FREE(rdata); - - return state_set; -} - -/**************************************************************************** - check the rpc bind acknowledge response -****************************************************************************/ - -int get_pipe_index( const char *pipe_name ) -{ - int pipe_idx = 0; - - while (pipe_names[pipe_idx].client_pipe != NULL) { - if (strequal(pipe_name, pipe_names[pipe_idx].client_pipe )) - return pipe_idx; - pipe_idx++; - }; - - return -1; -} - - -/**************************************************************************** - check the rpc bind acknowledge response -****************************************************************************/ - -const char* get_pipe_name_from_index( const int pipe_index ) -{ - - if ( (pipe_index < 0) || (pipe_index >= PI_MAX_PIPES) ) - return NULL; - - return pipe_names[pipe_index].client_pipe; -} - -/**************************************************************************** - Check to see if this pipe index points to one of - the pipes only supported by Win2k - ****************************************************************************/ - -BOOL is_win2k_pipe( const int pipe_idx ) -{ - switch ( pipe_idx ) - { - case PI_LSARPC_DS: - return True; - } - - return False; -} - -/**************************************************************************** - check the rpc bind acknowledge response -****************************************************************************/ - -static BOOL valid_pipe_name(const int pipe_idx, RPC_IFACE *abstract, RPC_IFACE *transfer) -{ - if ( pipe_idx >= PI_MAX_PIPES ) { - DEBUG(0,("valid_pipe_name: Programmer error! Invalid pipe index [%d]\n", - pipe_idx)); - return False; - } - - DEBUG(5,("Bind Abstract Syntax: ")); - dump_data(5, (char*)&(pipe_names[pipe_idx].abstr_syntax), - sizeof(pipe_names[pipe_idx].abstr_syntax)); - DEBUG(5,("Bind Transfer Syntax: ")); - dump_data(5, (char*)&(pipe_names[pipe_idx].trans_syntax), - sizeof(pipe_names[pipe_idx].trans_syntax)); - - /* copy the required syntaxes out so we can do the right bind */ - - *transfer = pipe_names[pipe_idx].trans_syntax; - *abstract = pipe_names[pipe_idx].abstr_syntax; - - return True; -} - -/**************************************************************************** - check the rpc bind acknowledge response -****************************************************************************/ - -static BOOL check_bind_response(RPC_HDR_BA *hdr_ba, const int pipe_idx, RPC_IFACE *transfer) -{ -# if 0 /* JERRY -- apparently ASU forgets to fill in the server pipe name sometimes */ - if ( hdr_ba->addr.len <= 0) - return False; - - if ( !strequal(hdr_ba->addr.str, pipe_names[pipe_idx].client_pipe) && - !strequal(hdr_ba->addr.str, pipe_names[pipe_idx].server_pipe) ) - { - DEBUG(4,("bind_rpc_pipe: pipe_name %s != expected pipe %s. oh well!\n", - pipe_names[i].server_pipe ,hdr_ba->addr.str)); - return False; - } - - DEBUG(5,("bind_rpc_pipe: server pipe_name found: %s\n", pipe_names[i].server_pipe )); - - if (pipe_names[pipe_idx].server_pipe == NULL) { - DEBUG(2,("bind_rpc_pipe: pipe name %s unsupported\n", hdr_ba->addr.str)); - return False; - } -#endif /* JERRY */ - - /* check the transfer syntax */ - if ((hdr_ba->transfer.version != transfer->version) || - (memcmp(&hdr_ba->transfer.uuid, &transfer->uuid, sizeof(transfer->uuid)) !=0)) { - DEBUG(2,("bind_rpc_pipe: transfer syntax differs\n")); - return False; - } - - /* lkclXXXX only accept one result: check the result(s) */ - if (hdr_ba->res.num_results != 0x1 || hdr_ba->res.result != 0) { - DEBUG(2,("bind_rpc_pipe: bind denied results: %d reason: %x\n", - hdr_ba->res.num_results, hdr_ba->res.reason)); - } - - DEBUG(5,("bind_rpc_pipe: accepted!\n")); - return True; -} - -/**************************************************************************** - Create and send the third packet in an RPC auth. -****************************************************************************/ - -static BOOL rpc_send_auth_reply(struct cli_state *cli, prs_struct *rdata, uint32 rpc_call_id) -{ - prs_struct rpc_out; - ssize_t ret; - - prs_init(&rpc_out, RPC_HEADER_LEN + RPC_HDR_AUTHA_LEN, /* need at least this much */ - cli->mem_ctx, MARSHALL); - - if (!NT_STATUS_IS_OK(create_rpc_bind_resp(cli, rpc_call_id, - &rpc_out))) { - return False; - } - - if ((ret = cli_write(cli, cli->nt_pipe_fnum, 0x8, prs_data_p(&rpc_out), - 0, (size_t)prs_offset(&rpc_out))) != (ssize_t)prs_offset(&rpc_out)) { - DEBUG(0,("rpc_send_auth_reply: cli_write failed. Return was %d\n", (int)ret)); - prs_mem_free(&rpc_out); - return False; - } - - prs_mem_free(&rpc_out); - return True; -} - -/**************************************************************************** - Do an rpc bind. -****************************************************************************/ - -static BOOL rpc_pipe_bind(struct cli_state *cli, int pipe_idx, const char *my_name) -{ - RPC_IFACE abstract; - RPC_IFACE transfer; - prs_struct rpc_out; - prs_struct rdata; - uint32 rpc_call_id; - char buffer[MAX_PDU_FRAG_LEN]; - - if ( (pipe_idx < 0) || (pipe_idx >= PI_MAX_PIPES) ) - return False; - - DEBUG(5,("Bind RPC Pipe[%x]: %s\n", cli->nt_pipe_fnum, pipe_names[pipe_idx].client_pipe)); - - if (!valid_pipe_name(pipe_idx, &abstract, &transfer)) - return False; - - prs_init(&rpc_out, 0, cli->mem_ctx, MARSHALL); - - /* - * Use the MAX_PDU_FRAG_LEN buffer to store the bind request. - */ - - prs_give_memory( &rpc_out, buffer, sizeof(buffer), False); - - rpc_call_id = get_rpc_call_id(); - - if (cli->pipe_auth_flags & AUTH_PIPE_NTLMSSP) { - NTSTATUS nt_status; - fstring password; - - DEBUG(5, ("NTLMSSP authenticated pipe selected\n")); - - nt_status = ntlmssp_client_start(&cli->ntlmssp_pipe_state); - - if (!NT_STATUS_IS_OK(nt_status)) - return False; - - /* Currently the NTLMSSP code does not implement NTLM2 correctly for signing or sealing */ - - cli->ntlmssp_pipe_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2; - - nt_status = ntlmssp_set_username(cli->ntlmssp_pipe_state, - cli->user_name); - if (!NT_STATUS_IS_OK(nt_status)) - return False; - - nt_status = ntlmssp_set_domain(cli->ntlmssp_pipe_state, - cli->domain); - if (!NT_STATUS_IS_OK(nt_status)) - return False; - - if (cli->pwd.null_pwd) { - nt_status = ntlmssp_set_password(cli->ntlmssp_pipe_state, - NULL); - if (!NT_STATUS_IS_OK(nt_status)) - return False; - } else { - pwd_get_cleartext(&cli->pwd, password); - nt_status = ntlmssp_set_password(cli->ntlmssp_pipe_state, - password); - if (!NT_STATUS_IS_OK(nt_status)) - return False; - } - - if (cli->pipe_auth_flags & AUTH_PIPE_SIGN) { - cli->ntlmssp_pipe_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN; - } - - if (cli->pipe_auth_flags & AUTH_PIPE_SEAL) { - cli->ntlmssp_pipe_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL; - } - } else if (cli->pipe_auth_flags & AUTH_PIPE_NETSEC) { - cli->auth_info.seq_num = 0; - } - - /* Marshall the outgoing data. */ - create_rpc_bind_req(cli, &rpc_out, rpc_call_id, - &abstract, &transfer, - global_myname(), cli->domain); - - /* Initialize the incoming data struct. */ - prs_init(&rdata, 0, cli->mem_ctx, UNMARSHALL); - - /* send data on \PIPE\. receive a response */ - if (rpc_api_pipe(cli, &rpc_out, &rdata, RPC_BINDACK)) { - RPC_HDR_BA hdr_ba; - - DEBUG(5, ("rpc_pipe_bind: rpc_api_pipe returned OK.\n")); - - if(!smb_io_rpc_hdr_ba("", &hdr_ba, &rdata, 0)) { - DEBUG(0,("rpc_pipe_bind: Failed to unmarshall RPC_HDR_BA.\n")); - prs_mem_free(&rdata); - return False; - } - - if(!check_bind_response(&hdr_ba, pipe_idx, &transfer)) { - DEBUG(2,("rpc_pipe_bind: check_bind_response failed.\n")); - prs_mem_free(&rdata); - return False; - } - - cli->max_xmit_frag = hdr_ba.bba.max_tsize; - cli->max_recv_frag = hdr_ba.bba.max_rsize; - - /* - * If we're doing NTLMSSP auth we need to send a reply to - * the bind-ack to complete the 3-way challenge response - * handshake. - */ - - if ((cli->pipe_auth_flags & AUTH_PIPE_NTLMSSP) - && !rpc_send_auth_reply(cli, &rdata, rpc_call_id)) { - DEBUG(0,("rpc_pipe_bind: rpc_send_auth_reply failed.\n")); - prs_mem_free(&rdata); - return False; - } - prs_mem_free(&rdata); - return True; - } - - return False; -} - -/**************************************************************************** - Open a session. - ****************************************************************************/ - -BOOL cli_nt_session_open(struct cli_state *cli, const int pipe_idx) -{ - int fnum; - - /* At the moment we can't have more than one pipe open over - a cli connection. )-: */ - - SMB_ASSERT(cli->nt_pipe_fnum == 0); - - /* The pipe index must fall within our array */ - - SMB_ASSERT((pipe_idx >= 0) && (pipe_idx < PI_MAX_PIPES)); - - if (cli->capabilities & CAP_NT_SMBS) { - if ((fnum = cli_nt_create(cli, &pipe_names[pipe_idx].client_pipe[5], DESIRED_ACCESS_PIPE)) == -1) { - DEBUG(0,("cli_nt_session_open: cli_nt_create failed on pipe %s to machine %s. Error was %s\n", - &pipe_names[pipe_idx].client_pipe[5], cli->desthost, cli_errstr(cli))); - return False; - } - - cli->nt_pipe_fnum = (uint16)fnum; - } else { - if ((fnum = cli_open(cli, pipe_names[pipe_idx].client_pipe, O_CREAT|O_RDWR, DENY_NONE)) == -1) { - DEBUG(1,("cli_nt_session_open: cli_open failed on pipe %s to machine %s. Error was %s\n", - pipe_names[pipe_idx].client_pipe, cli->desthost, cli_errstr(cli))); - return False; - } - - cli->nt_pipe_fnum = (uint16)fnum; - - /**************** Set Named Pipe State ***************/ - if (!rpc_pipe_set_hnd_state(cli, pipe_names[pipe_idx].client_pipe, 0x4300)) { - DEBUG(0,("cli_nt_session_open: pipe hnd state failed. Error was %s\n", - cli_errstr(cli))); - cli_close(cli, cli->nt_pipe_fnum); - cli->nt_pipe_fnum = 0; - return False; - } - } - - /******************* bind request on pipe *****************/ - - if (!rpc_pipe_bind(cli, pipe_idx, global_myname())) { - DEBUG(2,("cli_nt_session_open: rpc bind to %s failed\n", - get_pipe_name_from_index(pipe_idx))); - cli_close(cli, cli->nt_pipe_fnum); - cli->nt_pipe_fnum = 0; - return False; - } - - cli->pipe_idx = pipe_idx; - - /* - * Setup the remote server name prefixed by \ and the machine account name. - */ - - fstrcpy(cli->srv_name_slash, "\\\\"); - fstrcat(cli->srv_name_slash, cli->desthost); - strupper_m(cli->srv_name_slash); - - fstrcpy(cli->clnt_name_slash, "\\\\"); - fstrcat(cli->clnt_name_slash, global_myname()); - strupper_m(cli->clnt_name_slash); - - fstrcpy(cli->mach_acct, global_myname()); - fstrcat(cli->mach_acct, "$"); - strupper_m(cli->mach_acct); - - /* Remember which pipe we're talking to */ - fstrcpy(cli->pipe_name, pipe_names[pipe_idx].client_pipe); - - return True; -} - - -/**************************************************************************** - Open a session to the NETLOGON pipe using schannel. - - (Assumes that the netlogon pipe is already open) - ****************************************************************************/ - -NTSTATUS cli_nt_establish_netlogon(struct cli_state *cli, int sec_chan, - const uchar trust_password[16]) -{ - NTSTATUS result; - uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS; - int fnum; - - cli_nt_netlogon_netsec_session_close(cli); - - if (lp_client_schannel() != False) - neg_flags |= NETLOGON_NEG_SCHANNEL; - - result = cli_nt_setup_creds(cli, sec_chan, trust_password, - &neg_flags, 2); - - if (!NT_STATUS_IS_OK(result)) { - cli_nt_session_close(cli); - return result; - } - - if ((lp_client_schannel() == True) && - ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) { - - DEBUG(3, ("Server did not offer schannel\n")); - cli_nt_session_close(cli); - return NT_STATUS_UNSUCCESSFUL; - } - - if ((lp_client_schannel() == False) || - ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) { - return NT_STATUS_OK; - - /* keep the existing connection to NETLOGON open */ - - } - - /* Server offered schannel, so try it. */ - - memcpy(cli->auth_info.sess_key, cli->sess_key, - sizeof(cli->auth_info.sess_key)); - - cli->saved_netlogon_pipe_fnum = cli->nt_pipe_fnum; - - cli->pipe_auth_flags = AUTH_PIPE_NETSEC; - cli->pipe_auth_flags |= AUTH_PIPE_SIGN; - cli->pipe_auth_flags |= AUTH_PIPE_SEAL; - - if (cli->capabilities & CAP_NT_SMBS) { - - /* The secure channel connection must be opened on the same - session (TCP connection) as the one the challenge was - requested from. */ - if ((fnum = cli_nt_create(cli, PIPE_NETLOGON_PLAIN, - DESIRED_ACCESS_PIPE)) == -1) { - DEBUG(0,("cli_nt_create failed to %s machine %s. " - "Error was %s\n", - PIPE_NETLOGON, cli->desthost, - cli_errstr(cli))); - return NT_STATUS_UNSUCCESSFUL; - } - - cli->nt_pipe_fnum = (uint16)fnum; - } else { - if ((fnum = cli_open(cli, PIPE_NETLOGON, - O_CREAT|O_RDWR, DENY_NONE)) == -1) { - DEBUG(0,("cli_open failed on pipe %s to machine %s. " - "Error was %s\n", - PIPE_NETLOGON, cli->desthost, - cli_errstr(cli))); - return NT_STATUS_UNSUCCESSFUL; - } - - cli->nt_pipe_fnum = (uint16)fnum; - - /**************** Set Named Pipe State ***************/ - if (!rpc_pipe_set_hnd_state(cli, PIPE_NETLOGON, 0x4300)) { - DEBUG(0,("Pipe hnd state failed. Error was %s\n", - cli_errstr(cli))); - cli_close(cli, cli->nt_pipe_fnum); - return NT_STATUS_UNSUCCESSFUL; - } - } - - if (!rpc_pipe_bind(cli, PI_NETLOGON, global_myname())) { - DEBUG(2,("rpc bind to %s failed\n", PIPE_NETLOGON)); - cli_close(cli, cli->nt_pipe_fnum); - return NT_STATUS_UNSUCCESSFUL; - } - - return NT_STATUS_OK; -} - - -NTSTATUS cli_nt_setup_netsec(struct cli_state *cli, int sec_chan, int auth_flags, - const uchar trust_password[16]) -{ - NTSTATUS result; - uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS; - cli->pipe_auth_flags = 0; - - if (lp_client_schannel() == False) { - return NT_STATUS_OK; - } - - if (!cli_nt_session_open(cli, PI_NETLOGON)) { - DEBUG(0, ("Could not initialise %s\n", - get_pipe_name_from_index(PI_NETLOGON))); - return NT_STATUS_UNSUCCESSFUL; - } - - if (lp_client_schannel() != False) - neg_flags |= NETLOGON_NEG_SCHANNEL; - - neg_flags |= NETLOGON_NEG_SCHANNEL; - - result = cli_nt_setup_creds(cli, sec_chan, trust_password, - &neg_flags, 2); - - if (!(neg_flags & NETLOGON_NEG_SCHANNEL) - && lp_client_schannel() == True) { - DEBUG(1, ("Could not negotiate SCHANNEL with the DC!\n")); - result = NT_STATUS_UNSUCCESSFUL; - } - - if (!NT_STATUS_IS_OK(result)) { - ZERO_STRUCT(cli->auth_info.sess_key); - ZERO_STRUCT(cli->sess_key); - cli->pipe_auth_flags = 0; - cli_nt_session_close(cli); - return result; - } - - memcpy(cli->auth_info.sess_key, cli->sess_key, - sizeof(cli->auth_info.sess_key)); - - cli->saved_netlogon_pipe_fnum = cli->nt_pipe_fnum; - cli->nt_pipe_fnum = 0; - - /* doing schannel, not per-user auth */ - cli->pipe_auth_flags = auth_flags; - - return NT_STATUS_OK; -} - -const char *cli_pipe_get_name(struct cli_state *cli) -{ - return cli->pipe_name; -} - - |