/* Unix SMB/CIFS implementation. NT transaction handling Copyright (C) Andrew Tridgell 2003 Copyright (C) James J Myers 2003 <myersjj@samba.org> 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 3 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, see <http://www.gnu.org/licenses/>. */ /* This file handles the parsing of transact2 requests */ #include "includes.h" #include "smb_server/smb_server.h" #include "ntvfs/ntvfs.h" #include "libcli/raw/libcliraw.h" #include "libcli/raw/raw_proto.h" #include "librpc/gen_ndr/ndr_security.h" #include "param/param.h" /* hold the state of a nttrans op while in progress. Needed to allow for async backend functions. */ struct nttrans_op { struct smb_nttrans *trans; NTSTATUS (*send_fn)(struct nttrans_op *); void *op_info; }; /* setup a nttrans reply, given the data and params sizes */ static NTSTATUS nttrans_setup_reply(struct nttrans_op *op, struct smb_nttrans *trans, uint32_t param_size, uint32_t data_size, uint8_t setup_count) { trans->out.setup_count = setup_count; if (setup_count != 0) { trans->out.setup = talloc_zero_array(op, uint8_t, setup_count*2); NT_STATUS_HAVE_NO_MEMORY(trans->out.setup); } trans->out.params = data_blob_talloc(op, NULL, param_size); if (param_size != 0) { NT_STATUS_HAVE_NO_MEMORY(trans->out.params.data); } trans->out.data = data_blob_talloc(op, NULL, data_size); if (data_size != 0) { NT_STATUS_HAVE_NO_MEMORY(trans->out.data.data); } return NT_STATUS_OK; } /* send a nttrans create reply */ static NTSTATUS nttrans_create_send(struct nttrans_op *op) { union smb_open *io = talloc_get_type(op->op_info, union smb_open); uint8_t *params; NTSTATUS status; status = nttrans_setup_reply(op, op->trans, 69, 0, 0); NT_STATUS_NOT_OK_RETURN(status); params = op->trans->out.params.data; SSVAL(params, 0, io->ntcreatex.out.oplock_level); smbsrv_push_fnum(params, 2, io->ntcreatex.out.file.ntvfs); SIVAL(params, 4, io->ntcreatex.out.create_action); SIVAL(params, 8, 0); /* ea error offset */ push_nttime(params, 12, io->ntcreatex.out.create_time); push_nttime(params, 20, io->ntcreatex.out.access_time); push_nttime(params, 28, io->ntcreatex.out.write_time); push_nttime(params, 36, io->ntcreatex.out.change_time); SIVAL(params, 44, io->ntcreatex.out.attrib); SBVAL(params, 48, io->ntcreatex.out.alloc_size); SBVAL(params, 56, io->ntcreatex.out.size); SSVAL(params, 64, io->ntcreatex.out.file_type); SSVAL(params, 66, io->ntcreatex.out.ipc_state); SCVAL(params, 68, io->ntcreatex.out.is_directory); return NT_STATUS_OK; } /* parse NTTRANS_CREATE request */ static NTSTATUS nttrans_create(struct smbsrv_request *req, struct nttrans_op *op) { struct smb_nttrans *trans = op->trans; union smb_open *io; uint16_t fname_len; uint32_t sd_length, ea_length; NTSTATUS status; uint8_t *params; enum ndr_err_code ndr_err; if (trans->in.params.length < 54) { return NT_STATUS_INVALID_PARAMETER; } /* parse the request */ io = talloc(op, union smb_open); NT_STATUS_HAVE_NO_MEMORY(io); io->ntcreatex.level = RAW_OPEN_NTTRANS_CREATE; params = trans->in.params.data; io->ntcreatex.in.flags = IVAL(params, 0); io->ntcreatex.in.root_fid = IVAL(params, 4); io->ntcreatex.in.access_mask = IVAL(params, 8); io->ntcreatex.in.alloc_size = BVAL(params, 12); io->ntcreatex.in.file_attr = IVAL(params, 20); io->ntcreatex.in.share_access = IVAL(params, 24); io->ntcreatex.in.open_disposition = IVAL(params, 28); io->ntcreatex.in.create_options = IVAL(params, 32); sd_length = IVAL(params, 36); ea_length = IVAL(params, 40); fname_len = IVAL(params, 44); io->ntcreatex.in.impersonation = IVAL(params, 48); io->ntcreatex.in.security_flags = CVAL(params, 52); io->ntcreatex.in.sec_desc = NULL; io->ntcreatex.in.ea_list = NULL; io->ntcreatex.in.query_maximal_access = false; req_pull_string(&req->in.bufinfo, &io->ntcreatex.in.fname, params + 53, MIN(fname_len+1, trans->in.params.length - 53), STR_NO_RANGE_CHECK | STR_TERMINATE); if (!io->ntcreatex.in.fname) { return NT_STATUS_INVALID_PARAMETER; } if (sd_length > trans->in.data.length || ea_length > trans->in.data.length || (sd_length+ea_length) > trans->in.data.length) { return NT_STATUS_INVALID_PARAMETER; } /* this call has an optional security descriptor */ if (sd_length != 0) { DATA_BLOB blob; blob.data = trans->in.data.data; blob.length = sd_length; io->ntcreatex.in.sec_desc = talloc(io, struct security_descriptor); if (io->ntcreatex.in.sec_desc == NULL) { return NT_STATUS_NO_MEMORY; } ndr_err = ndr_pull_struct_blob(&blob, io, NULL, io->ntcreatex.in.sec_desc, (ndr_pull_flags_fn_t)ndr_pull_security_descriptor); if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { return ndr_map_error2ntstatus(ndr_err); } } /* and an optional ea_list */ if (ea_length > 4) { DATA_BLOB blob; blob.data = trans->in.data.data + sd_length; blob.length = ea_length; io->ntcreatex.in.ea_list = talloc(io, struct smb_ea_list); if (io->ntcreatex.in.ea_list == NULL) { return NT_STATUS_NO_MEMORY; } status = ea_pull_list_chained(&blob, io, &io->ntcreatex.in.ea_list->num_eas, &io->ntcreatex.in.ea_list->eas); if (!NT_STATUS_IS_OK(status)) { return status; } } op->send_fn = nttrans_create_send; op->op_info = io; return ntvfs_open(req->ntvfs, io); } /* send NTTRANS_QUERY_SEC_DESC reply */ static NTSTATUS nttrans_query_sec_desc_send(struct nttrans_op *op) { union smb_fileinfo *io = talloc_get_type(op->op_info, union smb_fileinfo); uint8_t *params; NTSTATUS status; enum ndr_err_code ndr_err; status = nttrans_setup_reply(op, op->trans, 4, 0, 0); NT_STATUS_NOT_OK_RETURN(status); params = op->trans->out.params.data; ndr_err = ndr_push_struct_blob(&op->trans->out.data, op, NULL, io->query_secdesc.out.sd, (ndr_push_flags_fn_t)ndr_push_security_descriptor); if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { return ndr_map_error2ntstatus(ndr_err); } SIVAL(params, 0, op->trans->out.data.length); return NT_STATUS_OK; } /* parse NTTRANS_QUERY_SEC_DESC request */ static NTSTATUS nttrans_query_sec_desc(struct smbsrv_request *req, struct nttrans_op *op) { struct smb_nttrans *trans = op->trans; union smb_fileinfo *io; if (trans->in.params.length < 8) { return NT_STATUS_INVALID_PARAMETER; } /* parse the request */ io = talloc(op, union smb_fileinfo); NT_STATUS_HAVE_NO_MEMORY(io); io->query_secdesc.level = RAW_FILEINFO_SEC_DESC; io->query_secdesc.in.file.ntvfs = smbsrv_pull_fnum(req, trans->in.params.data, 0); io->query_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4); op->op_info = io; op->send_fn = nttrans_query_sec_desc_send; SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->query_secdesc.in.file.ntvfs); return ntvfs_qfileinfo(req->ntvfs, io); } /* parse NTTRANS_SET_SEC_DESC request */ static NTSTATUS nttrans_set_sec_desc(struct smbsrv_request *req, struct nttrans_op *op) { struct smb_nttrans *trans = op->trans; union smb_setfileinfo *io; enum ndr_err_code ndr_err; if (trans->in.params.length < 8) { return NT_STATUS_INVALID_PARAMETER; } /* parse the request */ io = talloc(req, union smb_setfileinfo); NT_STATUS_HAVE_NO_MEMORY(io); io->set_secdesc.level = RAW_SFILEINFO_SEC_DESC; io->set_secdesc.in.file.ntvfs = smbsrv_pull_fnum(req, trans->in.params.data, 0); io->set_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4); io->set_secdesc.in.sd = talloc(io, struct security_descriptor); NT_STATUS_HAVE_NO_MEMORY(io->set_secdesc.in.sd); ndr_err = ndr_pull_struct_blob(&trans->in.data, req, NULL, io->set_secdesc.in.sd, (ndr_pull_flags_fn_t)ndr_pull_security_descriptor); if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { return ndr_map_error2ntstatus(ndr_err); } SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->set_secdesc.in.file.ntvfs); return ntvfs_setfileinfo(req->ntvfs, io); } /* parse NTTRANS_RENAME request */ static NTSTATUS nttrans_rename(struct smbsrv_request *req, struct nttrans_op *op) { struct smb_nttrans *trans = op->trans; union smb_rename *io; if (trans->in.params.length < 5) { return NT_STATUS_INVALID_PARAMETER; } /* parse the request */ io = talloc(req, union smb_rename); NT_STATUS_HAVE_NO_MEMORY(io); io->nttrans.level = RAW_RENAME_NTTRANS; io->nttrans.in.file.ntvfs = smbsrv_pull_fnum(req, trans->in.params.data, 0); io->nttrans.in.flags = SVAL(trans->in.params.data, 2); smbsrv_blob_pull_string(&req->in.bufinfo, &trans->in.params, 4, &io->nttrans.in.new_name, STR_TERMINATE); if (!io->nttrans.in.new_name) { return NT_STATUS_INVALID_PARAMETER; } SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->nttrans.in.file.ntvfs); return ntvfs_rename(req->ntvfs, io); } /* parse NTTRANS_IOCTL send */ static NTSTATUS nttrans_ioctl_send(struct nttrans_op *op) { union smb_ioctl *info = talloc_get_type(op->op_info, union smb_ioctl); NTSTATUS status; /* * we pass 0 as data_count here, * because we reuse the DATA_BLOB from the smb_ioctl * struct */ status = nttrans_setup_reply(op, op->trans, 0, 0, 1); NT_STATUS_NOT_OK_RETURN(status); op->trans->out.setup[0] = 0; op->trans->out.data = info->ntioctl.out.blob; return NT_STATUS_OK; } /* parse NTTRANS_IOCTL request */ static NTSTATUS nttrans_ioctl(struct smbsrv_request *req, struct nttrans_op *op) { struct smb_nttrans *trans = op->trans; union smb_ioctl *nt; /* should have at least 4 setup words */ if (trans->in.setup_count != 4) { return NT_STATUS_INVALID_PARAMETER; } nt = talloc(op, union smb_ioctl); NT_STATUS_HAVE_NO_MEMORY(nt); nt->ntioctl.level = RAW_IOCTL_NTIOCTL; nt->ntioctl.in.function = IVAL(trans->in.setup, 0); nt->ntioctl.in.file.ntvfs = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4); nt->ntioctl.in.fsctl = CVAL(trans->in.setup, 6); nt->ntioctl.in.filter = CVAL(trans->in.setup, 7); nt->ntioctl.in.max_data = trans->in.max_data; nt->ntioctl.in.blob = trans->in.data; op->op_info = nt; op->send_fn = nttrans_ioctl_send; SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(nt->ntioctl.in.file.ntvfs); return ntvfs_ioctl(req->ntvfs, nt); } /* send NTTRANS_NOTIFY_CHANGE reply */ static NTSTATUS nttrans_notify_change_send(struct nttrans_op *op) { union smb_notify *info = talloc_get_type(op->op_info, union smb_notify); size_t size = 0; int i; NTSTATUS status; uint8_t *p; #define MAX_BYTES_PER_CHAR 3 /* work out how big the reply buffer could be */ for (i=0;i<info->nttrans.out.num_changes;i++) { size += 12 + 3 + (1+strlen(info->nttrans.out.changes[i].name.s)) * MAX_BYTES_PER_CHAR; } status = nttrans_setup_reply(op, op->trans, size, 0, 0); NT_STATUS_NOT_OK_RETURN(status); p = op->trans->out.params.data; /* construct the changes buffer */ for (i=0;i<info->nttrans.out.num_changes;i++) { uint32_t ofs; ssize_t len; SIVAL(p, 4, info->nttrans.out.changes[i].action); len = push_string(lp_iconv_convenience(global_loadparm), p + 12, info->nttrans.out.changes[i].name.s, op->trans->out.params.length - (p+12 - op->trans->out.params.data), STR_UNICODE); SIVAL(p, 8, len); ofs = len + 12; if (ofs & 3) { int pad = 4 - (ofs & 3); memset(p+ofs, 0, pad); ofs += pad; } if (i == info->nttrans.out.num_changes-1) { SIVAL(p, 0, 0); } else { SIVAL(p, 0, ofs); } p += ofs; } op->trans->out.params.length = p - op->trans->out.params.data; return NT_STATUS_OK; } /* parse NTTRANS_NOTIFY_CHANGE request */ static NTSTATUS nttrans_notify_change(struct smbsrv_request *req, struct nttrans_op *op) { struct smb_nttrans *trans = op->trans; union smb_notify *info; /* should have at least 4 setup words */ if (trans->in.setup_count != 4) { return NT_STATUS_INVALID_PARAMETER; } info = talloc(op, union smb_notify); NT_STATUS_HAVE_NO_MEMORY(info); info->nttrans.level = RAW_NOTIFY_NTTRANS; info->nttrans.in.completion_filter = IVAL(trans->in.setup, 0); info->nttrans.in.file.ntvfs = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4); info->nttrans.in.recursive = SVAL(trans->in.setup, 6); info->nttrans.in.buffer_size = trans->in.max_param; op->op_info = info; op->send_fn = nttrans_notify_change_send; SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(info->nttrans.in.file.ntvfs); return ntvfs_notify(req->ntvfs, info); } /* backend for nttrans requests */ static NTSTATUS nttrans_backend(struct smbsrv_request *req, struct nttrans_op *op) { /* the nttrans command is in function */ switch (op->trans->in.function) { case NT_TRANSACT_CREATE: return nttrans_create(req, op); case NT_TRANSACT_IOCTL: return nttrans_ioctl(req, op); case NT_TRANSACT_RENAME: return nttrans_rename(req, op); case NT_TRANSACT_QUERY_SECURITY_DESC: return nttrans_query_sec_desc(req, op); case NT_TRANSACT_SET_SECURITY_DESC: return nttrans_set_sec_desc(req, op); case NT_TRANSACT_NOTIFY_CHANGE: return nttrans_notify_change(req, op); } /* an unknown nttrans command */ return NT_STATUS_DOS(ERRSRV, ERRerror); } static void reply_nttrans_send(struct ntvfs_request *ntvfs) { struct smbsrv_request *req; uint32_t params_left, data_left; uint8_t *params, *data; struct smb_nttrans *trans; struct nttrans_op *op; SMBSRV_CHECK_ASYNC_STATUS(op, struct nttrans_op); trans = op->trans; /* if this function needs work to form the nttrans reply buffer, then call that now */ if (op->send_fn != NULL) { NTSTATUS status; status = op->send_fn(op); if (!NT_STATUS_IS_OK(status)) { smbsrv_send_error(req, status); return; } } smbsrv_setup_reply(req, 18 + trans->out.setup_count, 0); /* note that we don't check the max_setup count (matching w2k3 behaviour) */ if (trans->out.params.length > trans->in.max_param) { smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL); trans->out.params.length = trans->in.max_param; } if (trans->out.data.length > trans->in.max_data) { smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL); trans->out.data.length = trans->in.max_data; } params_left = trans->out.params.length; data_left = trans->out.data.length; params = trans->out.params.data; data = trans->out.data.data; /* we need to divide up the reply into chunks that fit into the negotiated buffer size */ do { uint32_t this_data, this_param, max_bytes; uint_t align1 = 1, align2 = (params_left ? 2 : 0); struct smbsrv_request *this_req; max_bytes = req_max_data(req) - (align1 + align2); this_param = params_left; if (this_param > max_bytes) { this_param = max_bytes; } max_bytes -= this_param; this_data = data_left; if (this_data > max_bytes) { this_data = max_bytes; } /* don't destroy unless this is the last chunk */ if (params_left - this_param != 0 || data_left - this_data != 0) { this_req = smbsrv_setup_secondary_request(req); } else { this_req = req; } req_grow_data(this_req, this_param + this_data + (align1 + align2)); SSVAL(this_req->out.vwv, 0, 0); /* reserved */ SCVAL(this_req->out.vwv, 2, 0); /* reserved */ SIVAL(this_req->out.vwv, 3, trans->out.params.length); SIVAL(this_req->out.vwv, 7, trans->out.data.length); SIVAL(this_req->out.vwv, 11, this_param); SIVAL(this_req->out.vwv, 15, align1 + PTR_DIFF(this_req->out.data, this_req->out.hdr)); SIVAL(this_req->out.vwv, 19, PTR_DIFF(params, trans->out.params.data)); SIVAL(this_req->out.vwv, 23, this_data); SIVAL(this_req->out.vwv, 27, align1 + align2 + PTR_DIFF(this_req->out.data + this_param, this_req->out.hdr)); SIVAL(this_req->out.vwv, 31, PTR_DIFF(data, trans->out.data.data)); SCVAL(this_req->out.vwv, 35, trans->out.setup_count); memcpy((char *)(this_req->out.vwv) + VWV(18), trans->out.setup, sizeof(uint16_t) * trans->out.setup_count); memset(this_req->out.data, 0, align1); if (this_param != 0) { memcpy(this_req->out.data + align1, params, this_param); } memset(this_req->out.data+this_param+align1, 0, align2); if (this_data != 0) { memcpy(this_req->out.data+this_param+align1+align2, data, this_data); } params_left -= this_param; data_left -= this_data; params += this_param; data += this_data; smbsrv_send_reply(this_req); } while (params_left != 0 || data_left != 0); } /* send a continue request */ static void reply_nttrans_continue(struct smbsrv_request *req, struct smb_nttrans *trans) { struct smbsrv_request *req2; struct smbsrv_trans_partial *tp; int count; /* make sure they don't flood us */ for (count=0,tp=req->smb_conn->trans_partial;tp;tp=tp->next) count++; if (count > 100) { smbsrv_send_error(req, NT_STATUS_INSUFFICIENT_RESOURCES); return; } tp = talloc(req, struct smbsrv_trans_partial); tp->req = req; tp->u.nttrans = trans; tp->command = SMBnttrans; DLIST_ADD(req->smb_conn->trans_partial, tp); talloc_set_destructor(tp, smbsrv_trans_partial_destructor); req2 = smbsrv_setup_secondary_request(req); /* send a 'please continue' reply */ smbsrv_setup_reply(req2, 0, 0); smbsrv_send_reply(req2); } /* answer a reconstructed trans request */ static void reply_nttrans_complete(struct smbsrv_request *req, struct smb_nttrans *trans) { struct nttrans_op *op; SMBSRV_TALLOC_IO_PTR(op, struct nttrans_op); SMBSRV_SETUP_NTVFS_REQUEST(reply_nttrans_send, NTVFS_ASYNC_STATE_MAY_ASYNC); op->trans = trans; op->op_info = NULL; op->send_fn = NULL; /* its a full request, give it to the backend */ ZERO_STRUCT(trans->out); SMBSRV_CALL_NTVFS_BACKEND(nttrans_backend(req, op)); } /**************************************************************************** Reply to an SMBnttrans request ****************************************************************************/ void smbsrv_reply_nttrans(struct smbsrv_request *req) { struct smb_nttrans *trans; uint32_t param_ofs, data_ofs; uint32_t param_count, data_count; uint32_t param_total, data_total; /* parse request */ if (req->in.wct < 19) { smbsrv_send_error(req, NT_STATUS_FOOBAR); return; } trans = talloc(req, struct smb_nttrans); if (trans == NULL) { smbsrv_send_error(req, NT_STATUS_NO_MEMORY); return; } trans->in.max_setup = CVAL(req->in.vwv, 0); param_total = IVAL(req->in.vwv, 3); data_total = IVAL(req->in.vwv, 7); trans->in.max_param = IVAL(req->in.vwv, 11); trans->in.max_data = IVAL(req->in.vwv, 15); param_count = IVAL(req->in.vwv, 19); param_ofs = IVAL(req->in.vwv, 23); data_count = IVAL(req->in.vwv, 27); data_ofs = IVAL(req->in.vwv, 31); trans->in.setup_count= CVAL(req->in.vwv, 35); trans->in.function = SVAL(req->in.vwv, 36); if (req->in.wct != 19 + trans->in.setup_count) { smbsrv_send_error(req, NT_STATUS_DOS(ERRSRV, ERRerror)); return; } /* parse out the setup words */ trans->in.setup = talloc_array(req, uint8_t, trans->in.setup_count*2); if (!trans->in.setup) { smbsrv_send_error(req, NT_STATUS_NO_MEMORY); return; } memcpy(trans->in.setup, (char *)(req->in.vwv) + VWV(19), sizeof(uint16_t) * trans->in.setup_count); if (!req_pull_blob(&req->in.bufinfo, req->in.hdr + param_ofs, param_count, &trans->in.params) || !req_pull_blob(&req->in.bufinfo, req->in.hdr + data_ofs, data_count, &trans->in.data)) { smbsrv_send_error(req, NT_STATUS_FOOBAR); return; } /* is it a partial request? if so, then send a 'send more' message */ if (param_total > param_count || data_total > data_count) { reply_nttrans_continue(req, trans); return; } reply_nttrans_complete(req, trans); } /**************************************************************************** Reply to an SMBnttranss request ****************************************************************************/ void smbsrv_reply_nttranss(struct smbsrv_request *req) { struct smbsrv_trans_partial *tp; struct smb_nttrans *trans = NULL; uint32_t param_ofs, data_ofs; uint32_t param_count, data_count; uint32_t param_disp, data_disp; uint32_t param_total, data_total; DATA_BLOB params, data; /* parse request */ if (req->in.wct != 18) { smbsrv_send_error(req, NT_STATUS_DOS(ERRSRV, ERRerror)); return; } for (tp=req->smb_conn->trans_partial;tp;tp=tp->next) { if (tp->command == SMBnttrans && SVAL(tp->req->in.hdr, HDR_MID) == SVAL(req->in.hdr, HDR_MID)) { /* TODO: check the VUID, PID and TID too? */ break; } } if (tp == NULL) { smbsrv_send_error(req, NT_STATUS_INVALID_PARAMETER); return; } trans = tp->u.nttrans; param_total = IVAL(req->in.vwv, 3); data_total = IVAL(req->in.vwv, 7); param_count = IVAL(req->in.vwv, 11); param_ofs = IVAL(req->in.vwv, 15); param_disp = IVAL(req->in.vwv, 19); data_count = IVAL(req->in.vwv, 23); data_ofs = IVAL(req->in.vwv, 27); data_disp = IVAL(req->in.vwv, 31); if (!req_pull_blob(&req->in.bufinfo, req->in.hdr + param_ofs, param_count, ¶ms) || !req_pull_blob(&req->in.bufinfo, req->in.hdr + data_ofs, data_count, &data)) { smbsrv_send_error(req, NT_STATUS_INVALID_PARAMETER); return; } /* only allow contiguous requests */ if ((param_count != 0 && param_disp != trans->in.params.length) || (data_count != 0 && data_disp != trans->in.data.length)) { smbsrv_send_error(req, NT_STATUS_INVALID_PARAMETER); return; } /* add to the existing request */ if (param_count != 0) { trans->in.params.data = talloc_realloc(trans, trans->in.params.data, uint8_t, param_disp + param_count); if (trans->in.params.data == NULL) { smbsrv_send_error(tp->req, NT_STATUS_NO_MEMORY); return; } trans->in.params.length = param_disp + param_count; } if (data_count != 0) { trans->in.data.data = talloc_realloc(trans, trans->in.data.data, uint8_t, data_disp + data_count); if (trans->in.data.data == NULL) { smbsrv_send_error(tp->req, NT_STATUS_NO_MEMORY); return; } trans->in.data.length = data_disp + data_count; } memcpy(trans->in.params.data + param_disp, params.data, params.length); memcpy(trans->in.data.data + data_disp, data.data, data.length); /* the sequence number of the reply is taken from the last secondary response */ tp->req->seq_num = req->seq_num; /* we don't reply to Transs2 requests */ talloc_free(req); if (trans->in.params.length == param_total && trans->in.data.length == data_total) { /* its now complete */ req = tp->req; talloc_free(tp); reply_nttrans_complete(req, trans); } return; }