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Diffstat (limited to '')
| -rw-r--r-- | source3/smbd/smb1_nttrans.c | 2718 |
1 files changed, 2718 insertions, 0 deletions
diff --git a/source3/smbd/smb1_nttrans.c b/source3/smbd/smb1_nttrans.c new file mode 100644 index 0000000..104d3c0 --- /dev/null +++ b/source3/smbd/smb1_nttrans.c @@ -0,0 +1,2718 @@ +/* + Unix SMB/CIFS implementation. + SMB NT transaction handling + Copyright (C) Jeremy Allison 1994-2007 + Copyright (C) Stefan (metze) Metzmacher 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 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/>. +*/ + +#include "includes.h" +#include "system/filesys.h" +#include "smbd/smbd.h" +#include "smbd/globals.h" +#include "fake_file.h" +#include "../libcli/security/security.h" +#include "../librpc/gen_ndr/ndr_security.h" +#include "passdb/lookup_sid.h" +#include "auth.h" +#include "smbprofile.h" +#include "libsmb/libsmb.h" +#include "lib/util_ea.h" +#include "librpc/gen_ndr/ndr_quota.h" +#include "librpc/gen_ndr/ndr_security.h" + +static char *nttrans_realloc(char **ptr, size_t size) +{ + if (ptr==NULL) { + smb_panic("nttrans_realloc() called with NULL ptr"); + } + + *ptr = (char *)SMB_REALLOC(*ptr, size); + if(*ptr == NULL) { + return NULL; + } + memset(*ptr,'\0',size); + return *ptr; +} + +/**************************************************************************** + Send the required number of replies back. + We assume all fields other than the data fields are + set correctly for the type of call. + HACK ! Always assumes smb_setup field is zero. +****************************************************************************/ + +static void send_nt_replies(connection_struct *conn, + struct smb_request *req, NTSTATUS nt_error, + char *params, int paramsize, + char *pdata, int datasize) +{ + int data_to_send = datasize; + int params_to_send = paramsize; + int useable_space; + char *pp = params; + char *pd = pdata; + int params_sent_thistime, data_sent_thistime, total_sent_thistime; + int alignment_offset = 1; + int data_alignment_offset = 0; + struct smbXsrv_connection *xconn = req->xconn; + int max_send = xconn->smb1.sessions.max_send; + + /* + * If there genuinely are no parameters or data to send just send + * the empty packet. + */ + + if(params_to_send == 0 && data_to_send == 0) { + reply_smb1_outbuf(req, 18, 0); + if (NT_STATUS_V(nt_error)) { + error_packet_set((char *)req->outbuf, + 0, 0, nt_error, + __LINE__,__FILE__); + } + show_msg((char *)req->outbuf); + if (!smb1_srv_send(xconn, + (char *)req->outbuf, + true, + req->seqnum + 1, + IS_CONN_ENCRYPTED(conn))) { + exit_server_cleanly("send_nt_replies: smb1_srv_send failed."); + } + TALLOC_FREE(req->outbuf); + return; + } + + /* + * When sending params and data ensure that both are nicely aligned. + * Only do this alignment when there is also data to send - else + * can cause NT redirector problems. + */ + + if (((params_to_send % 4) != 0) && (data_to_send != 0)) { + data_alignment_offset = 4 - (params_to_send % 4); + } + + /* + * Space is bufsize minus Netbios over TCP header minus SMB header. + * The alignment_offset is to align the param bytes on a four byte + * boundary (2 bytes for data len, one byte pad). + * NT needs this to work correctly. + */ + + useable_space = max_send - (smb_size + + 2 * 18 /* wct */ + + alignment_offset + + data_alignment_offset); + + if (useable_space < 0) { + char *msg = talloc_asprintf( + talloc_tos(), + "send_nt_replies failed sanity useable_space = %d!!!", + useable_space); + DEBUG(0, ("%s\n", msg)); + exit_server_cleanly(msg); + } + + while (params_to_send || data_to_send) { + + /* + * Calculate whether we will totally or partially fill this packet. + */ + + total_sent_thistime = params_to_send + data_to_send; + + /* + * We can never send more than useable_space. + */ + + total_sent_thistime = MIN(total_sent_thistime, useable_space); + + reply_smb1_outbuf(req, 18, + total_sent_thistime + alignment_offset + + data_alignment_offset); + + /* + * Set total params and data to be sent. + */ + + SIVAL(req->outbuf,smb_ntr_TotalParameterCount,paramsize); + SIVAL(req->outbuf,smb_ntr_TotalDataCount,datasize); + + /* + * Calculate how many parameters and data we can fit into + * this packet. Parameters get precedence. + */ + + params_sent_thistime = MIN(params_to_send,useable_space); + data_sent_thistime = useable_space - params_sent_thistime; + data_sent_thistime = MIN(data_sent_thistime,data_to_send); + + SIVAL(req->outbuf, smb_ntr_ParameterCount, + params_sent_thistime); + + if(params_sent_thistime == 0) { + SIVAL(req->outbuf,smb_ntr_ParameterOffset,0); + SIVAL(req->outbuf,smb_ntr_ParameterDisplacement,0); + } else { + /* + * smb_ntr_ParameterOffset is the offset from the start of the SMB header to the + * parameter bytes, however the first 4 bytes of outbuf are + * the Netbios over TCP header. Thus use smb_base() to subtract + * them from the calculation. + */ + + SIVAL(req->outbuf,smb_ntr_ParameterOffset, + ((smb_buf(req->outbuf)+alignment_offset) + - smb_base(req->outbuf))); + /* + * Absolute displacement of param bytes sent in this packet. + */ + + SIVAL(req->outbuf, smb_ntr_ParameterDisplacement, + pp - params); + } + + /* + * Deal with the data portion. + */ + + SIVAL(req->outbuf, smb_ntr_DataCount, data_sent_thistime); + + if(data_sent_thistime == 0) { + SIVAL(req->outbuf,smb_ntr_DataOffset,0); + SIVAL(req->outbuf,smb_ntr_DataDisplacement, 0); + } else { + /* + * The offset of the data bytes is the offset of the + * parameter bytes plus the number of parameters being sent this time. + */ + + SIVAL(req->outbuf, smb_ntr_DataOffset, + ((smb_buf(req->outbuf)+alignment_offset) - + smb_base(req->outbuf)) + + params_sent_thistime + data_alignment_offset); + SIVAL(req->outbuf,smb_ntr_DataDisplacement, pd - pdata); + } + + /* + * Copy the param bytes into the packet. + */ + + if(params_sent_thistime) { + if (alignment_offset != 0) { + memset(smb_buf(req->outbuf), 0, + alignment_offset); + } + memcpy((smb_buf(req->outbuf)+alignment_offset), pp, + params_sent_thistime); + } + + /* + * Copy in the data bytes + */ + + if(data_sent_thistime) { + if (data_alignment_offset != 0) { + memset((smb_buf(req->outbuf)+alignment_offset+ + params_sent_thistime), 0, + data_alignment_offset); + } + memcpy(smb_buf(req->outbuf)+alignment_offset + +params_sent_thistime+data_alignment_offset, + pd,data_sent_thistime); + } + + DEBUG(9,("nt_rep: params_sent_thistime = %d, data_sent_thistime = %d, useable_space = %d\n", + params_sent_thistime, data_sent_thistime, useable_space)); + DEBUG(9,("nt_rep: params_to_send = %d, data_to_send = %d, paramsize = %d, datasize = %d\n", + params_to_send, data_to_send, paramsize, datasize)); + + if (NT_STATUS_V(nt_error)) { + error_packet_set((char *)req->outbuf, + 0, 0, nt_error, + __LINE__,__FILE__); + } + + /* Send the packet */ + show_msg((char *)req->outbuf); + if (!smb1_srv_send(xconn, + (char *)req->outbuf, + true, + req->seqnum + 1, + IS_CONN_ENCRYPTED(conn))) { + exit_server_cleanly("send_nt_replies: smb1_srv_send failed."); + } + + TALLOC_FREE(req->outbuf); + + pp += params_sent_thistime; + pd += data_sent_thistime; + + params_to_send -= params_sent_thistime; + data_to_send -= data_sent_thistime; + + /* + * Sanity check + */ + + if(params_to_send < 0 || data_to_send < 0) { + DEBUG(0,("send_nt_replies failed sanity check pts = %d, dts = %d\n!!!", + params_to_send, data_to_send)); + exit_server_cleanly("send_nt_replies: internal error"); + } + } +} + +/**************************************************************************** + Reply to an NT create and X call on a pipe +****************************************************************************/ + +static void nt_open_pipe(char *fname, connection_struct *conn, + struct smb_request *req, uint16_t *ppnum) +{ + files_struct *fsp; + NTSTATUS status; + + DEBUG(4,("nt_open_pipe: Opening pipe %s.\n", fname)); + + /* Strip \\ off the name if present. */ + while (fname[0] == '\\') { + fname++; + } + + status = open_np_file(req, fname, &fsp); + if (!NT_STATUS_IS_OK(status)) { + if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) { + reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND, + ERRDOS, ERRbadpipe); + return; + } + reply_nterror(req, status); + return; + } + + *ppnum = fsp->fnum; + return; +} + +/**************************************************************************** + Reply to an NT create and X call for pipes. +****************************************************************************/ + +static void do_ntcreate_pipe_open(connection_struct *conn, + struct smb_request *req) +{ + char *fname = NULL; + uint16_t pnum = FNUM_FIELD_INVALID; + char *p = NULL; + uint32_t flags = IVAL(req->vwv+3, 1); + TALLOC_CTX *ctx = talloc_tos(); + + srvstr_pull_req_talloc(ctx, req, &fname, req->buf, STR_TERMINATE); + + if (!fname) { + reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND, + ERRDOS, ERRbadpipe); + return; + } + nt_open_pipe(fname, conn, req, &pnum); + + if (req->outbuf) { + /* error reply */ + return; + } + + /* + * Deal with pipe return. + */ + + if (flags & EXTENDED_RESPONSE_REQUIRED) { + /* This is very strange. We + * return 50 words, but only set + * the wcnt to 42 ? It's definitely + * what happens on the wire.... + */ + reply_smb1_outbuf(req, 50, 0); + SCVAL(req->outbuf,smb_wct,42); + } else { + reply_smb1_outbuf(req, 34, 0); + } + + SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */ + SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */ + + p = (char *)req->outbuf + smb_vwv2; + p++; + SSVAL(p,0,pnum); + p += 2; + SIVAL(p,0,FILE_WAS_OPENED); + p += 4; + p += 32; + SIVAL(p,0,FILE_ATTRIBUTE_NORMAL); /* File Attributes. */ + p += 20; + /* File type. */ + SSVAL(p,0,FILE_TYPE_MESSAGE_MODE_PIPE); + /* Device state. */ + SSVAL(p,2, 0x5FF); /* ? */ + p += 4; + + if (flags & EXTENDED_RESPONSE_REQUIRED) { + p += 25; + SIVAL(p,0,FILE_GENERIC_ALL); + /* + * For pipes W2K3 seems to return + * 0x12019B next. + * This is ((FILE_GENERIC_READ|FILE_GENERIC_WRITE) & ~FILE_APPEND_DATA) + */ + SIVAL(p,4,(FILE_GENERIC_READ|FILE_GENERIC_WRITE)&~FILE_APPEND_DATA); + } + + DEBUG(5,("do_ntcreate_pipe_open: open pipe = %s\n", fname)); +} + +struct case_semantics_state { + connection_struct *conn; + bool case_sensitive; + bool case_preserve; + bool short_case_preserve; +}; + +/**************************************************************************** + Restore case semantics. +****************************************************************************/ + +static int restore_case_semantics(struct case_semantics_state *state) +{ + state->conn->case_sensitive = state->case_sensitive; + state->conn->case_preserve = state->case_preserve; + state->conn->short_case_preserve = state->short_case_preserve; + return 0; +} + +/**************************************************************************** + Save case semantics. +****************************************************************************/ + +static struct case_semantics_state *set_posix_case_semantics(TALLOC_CTX *mem_ctx, + connection_struct *conn) +{ + struct case_semantics_state *result; + + if (!(result = talloc(mem_ctx, struct case_semantics_state))) { + return NULL; + } + + result->conn = conn; + result->case_sensitive = conn->case_sensitive; + result->case_preserve = conn->case_preserve; + result->short_case_preserve = conn->short_case_preserve; + + /* Set to POSIX. */ + conn->case_sensitive = True; + conn->case_preserve = True; + conn->short_case_preserve = True; + + talloc_set_destructor(result, restore_case_semantics); + + return result; +} + +/* + * Calculate the full path name given a relative fid. + */ +static NTSTATUS get_relative_fid_filename(connection_struct *conn, + struct smb_request *req, + uint16_t root_dir_fid, + char *path, + char **path_out) +{ + struct files_struct *dir_fsp = NULL; + char *new_path = NULL; + + if (root_dir_fid == 0 || path == NULL) { + return NT_STATUS_INTERNAL_ERROR; + } + + dir_fsp = file_fsp(req, root_dir_fid); + if (dir_fsp == NULL) { + return NT_STATUS_INVALID_HANDLE; + } + + if (fsp_is_alternate_stream(dir_fsp)) { + return NT_STATUS_INVALID_HANDLE; + } + + if (!dir_fsp->fsp_flags.is_directory) { + /* + * Check to see if this is a mac fork of some kind. + */ + if (conn->fs_capabilities & FILE_NAMED_STREAMS) { + char *stream = NULL; + + stream = strchr_m(path, ':'); + if (stream != NULL) { + return NT_STATUS_OBJECT_PATH_NOT_FOUND; + } + } + + /* + * We need to handle the case when we get a relative open + * relative to a file and the pathname is blank - this is a + * reopen! (hint from demyn plantenberg) + */ + return NT_STATUS_INVALID_HANDLE; + } + + if (ISDOT(dir_fsp->fsp_name->base_name)) { + /* + * We're at the toplevel dir, the final file name + * must not contain ./, as this is filtered out + * normally by srvstr_get_path and unix_convert + * explicitly rejects paths containing ./. + */ + new_path = talloc_strdup(talloc_tos(), path); + } else { + /* + * Copy in the base directory name. + */ + + new_path = talloc_asprintf(talloc_tos(), + "%s/%s", + dir_fsp->fsp_name->base_name, + path); + } + if (new_path == NULL) { + return NT_STATUS_NO_MEMORY; + } + + *path_out = new_path; + return NT_STATUS_OK; +} + +/**************************************************************************** + Reply to an NT create and X call. +****************************************************************************/ + +void reply_ntcreate_and_X(struct smb_request *req) +{ + connection_struct *conn = req->conn; + struct files_struct *dirfsp = NULL; + struct smb_filename *smb_fname = NULL; + char *fname = NULL; + uint32_t flags; + uint32_t access_mask; + uint32_t file_attributes; + uint32_t share_access; + uint32_t create_disposition; + uint32_t create_options; + uint16_t root_dir_fid; + uint64_t allocation_size; + /* Breakout the oplock request bits so we can set the + reply bits separately. */ + uint32_t fattr=0; + off_t file_len = 0; + int info = 0; + files_struct *fsp = NULL; + char *p = NULL; + struct timespec create_timespec; + struct timespec c_timespec; + struct timespec a_timespec; + struct timespec m_timespec; + NTSTATUS status; + int oplock_request; + uint8_t oplock_granted = NO_OPLOCK_RETURN; + struct case_semantics_state *case_state = NULL; + uint32_t ucf_flags; + NTTIME twrp = 0; + TALLOC_CTX *ctx = talloc_tos(); + + START_PROFILE(SMBntcreateX); + + if (req->wct < 24) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + goto out; + } + + flags = IVAL(req->vwv+3, 1); + access_mask = IVAL(req->vwv+7, 1); + file_attributes = IVAL(req->vwv+13, 1); + share_access = IVAL(req->vwv+15, 1); + create_disposition = IVAL(req->vwv+17, 1); + create_options = IVAL(req->vwv+19, 1); + root_dir_fid = (uint16_t)IVAL(req->vwv+5, 1); + + allocation_size = BVAL(req->vwv+9, 1); + + srvstr_get_path_req(ctx, req, &fname, (const char *)req->buf, + STR_TERMINATE, &status); + + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + goto out; + } + + DEBUG(10,("reply_ntcreate_and_X: flags = 0x%x, access_mask = 0x%x " + "file_attributes = 0x%x, share_access = 0x%x, " + "create_disposition = 0x%x create_options = 0x%x " + "root_dir_fid = 0x%x, fname = %s\n", + (unsigned int)flags, + (unsigned int)access_mask, + (unsigned int)file_attributes, + (unsigned int)share_access, + (unsigned int)create_disposition, + (unsigned int)create_options, + (unsigned int)root_dir_fid, + fname)); + + /* + * we need to remove ignored bits when they come directly from the client + * because we reuse some of them for internal stuff + */ + create_options &= ~NTCREATEX_OPTIONS_MUST_IGNORE_MASK; + + /* + * If it's an IPC, use the pipe handler. + */ + + if (IS_IPC(conn)) { + if (lp_nt_pipe_support()) { + do_ntcreate_pipe_open(conn, req); + goto out; + } + reply_nterror(req, NT_STATUS_ACCESS_DENIED); + goto out; + } + + oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0; + if (oplock_request) { + oplock_request |= (flags & REQUEST_BATCH_OPLOCK) + ? BATCH_OPLOCK : 0; + } + + if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) { + case_state = set_posix_case_semantics(ctx, conn); + if (!case_state) { + reply_nterror(req, NT_STATUS_NO_MEMORY); + goto out; + } + } + + if (root_dir_fid != 0) { + char *new_fname = NULL; + + status = get_relative_fid_filename(conn, + req, + root_dir_fid, + fname, + &new_fname); + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + goto out; + } + fname = new_fname; + } + + ucf_flags = filename_create_ucf_flags(req, create_disposition); + if (ucf_flags & UCF_GMT_PATHNAME) { + extract_snapshot_token(fname, &twrp); + } + status = smb1_strip_dfs_path(ctx, &ucf_flags, &fname); + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + goto out; + } + + status = filename_convert_dirfsp( + ctx, conn, fname, ucf_flags, twrp, &dirfsp, &smb_fname); + + TALLOC_FREE(case_state); + + if (!NT_STATUS_IS_OK(status)) { + if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) { + reply_botherror(req, + NT_STATUS_PATH_NOT_COVERED, + ERRSRV, ERRbadpath); + goto out; + } + reply_nterror(req, status); + goto out; + } + + /* + * Bug #6898 - clients using Windows opens should + * never be able to set this attribute into the + * VFS. + */ + file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS; + + status = SMB_VFS_CREATE_FILE( + conn, /* conn */ + req, /* req */ + dirfsp, /* dirfsp */ + smb_fname, /* fname */ + access_mask, /* access_mask */ + share_access, /* share_access */ + create_disposition, /* create_disposition*/ + create_options, /* create_options */ + file_attributes, /* file_attributes */ + oplock_request, /* oplock_request */ + NULL, /* lease */ + allocation_size, /* allocation_size */ + 0, /* private_flags */ + NULL, /* sd */ + NULL, /* ea_list */ + &fsp, /* result */ + &info, /* pinfo */ + NULL, NULL); /* create context */ + + if (!NT_STATUS_IS_OK(status)) { + if (open_was_deferred(req->xconn, req->mid)) { + /* We have re-scheduled this call, no error. */ + goto out; + } + if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) { + bool ok = defer_smb1_sharing_violation(req); + if (ok) { + goto out; + } + } + reply_openerror(req, status); + goto out; + } + + /* Ensure we're pointing at the correct stat struct. */ + smb_fname = fsp->fsp_name; + + /* + * If the caller set the extended oplock request bit + * and we granted one (by whatever means) - set the + * correct bit for extended oplock reply. + */ + + if (oplock_request && + (lp_fake_oplocks(SNUM(conn)) + || EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))) { + + /* + * Exclusive oplock granted + */ + + if (flags & REQUEST_BATCH_OPLOCK) { + oplock_granted = BATCH_OPLOCK_RETURN; + } else { + oplock_granted = EXCLUSIVE_OPLOCK_RETURN; + } + } else if (fsp->oplock_type == LEVEL_II_OPLOCK) { + oplock_granted = LEVEL_II_OPLOCK_RETURN; + } else { + oplock_granted = NO_OPLOCK_RETURN; + } + + file_len = smb_fname->st.st_ex_size; + + if (flags & EXTENDED_RESPONSE_REQUIRED) { + /* This is very strange. We + * return 50 words, but only set + * the wcnt to 42 ? It's definitely + * what happens on the wire.... + */ + reply_smb1_outbuf(req, 50, 0); + SCVAL(req->outbuf,smb_wct,42); + } else { + reply_smb1_outbuf(req, 34, 0); + } + + SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */ + SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */ + + p = (char *)req->outbuf + smb_vwv2; + + SCVAL(p, 0, oplock_granted); + + p++; + SSVAL(p,0,fsp->fnum); + p += 2; + if ((create_disposition == FILE_SUPERSEDE) + && (info == FILE_WAS_OVERWRITTEN)) { + SIVAL(p,0,FILE_WAS_SUPERSEDED); + } else { + SIVAL(p,0,info); + } + p += 4; + + fattr = fdos_mode(fsp); + if (fattr == 0) { + fattr = FILE_ATTRIBUTE_NORMAL; + } + + /* Create time. */ + create_timespec = get_create_timespec(conn, fsp, smb_fname); + a_timespec = smb_fname->st.st_ex_atime; + m_timespec = smb_fname->st.st_ex_mtime; + c_timespec = get_change_timespec(conn, fsp, smb_fname); + + if (lp_dos_filetime_resolution(SNUM(conn))) { + dos_filetime_timespec(&create_timespec); + dos_filetime_timespec(&a_timespec); + dos_filetime_timespec(&m_timespec); + dos_filetime_timespec(&c_timespec); + } + + put_long_date_full_timespec(conn->ts_res, p, &create_timespec); /* create time. */ + p += 8; + put_long_date_full_timespec(conn->ts_res, p, &a_timespec); /* access time */ + p += 8; + put_long_date_full_timespec(conn->ts_res, p, &m_timespec); /* write time */ + p += 8; + put_long_date_full_timespec(conn->ts_res, p, &c_timespec); /* change time */ + p += 8; + SIVAL(p,0,fattr); /* File Attributes. */ + p += 4; + SOFF_T(p, 0, SMB_VFS_GET_ALLOC_SIZE(conn,fsp,&smb_fname->st)); + p += 8; + SOFF_T(p,0,file_len); + p += 8; + if (flags & EXTENDED_RESPONSE_REQUIRED) { + uint16_t file_status = (NO_EAS|NO_SUBSTREAMS|NO_REPARSETAG); + unsigned int num_streams = 0; + struct stream_struct *streams = NULL; + + if (lp_ea_support(SNUM(conn))) { + size_t num_names = 0; + /* Do we have any EA's ? */ + status = get_ea_names_from_fsp( + ctx, smb_fname->fsp, NULL, &num_names); + if (NT_STATUS_IS_OK(status) && num_names) { + file_status &= ~NO_EAS; + } + } + + status = vfs_fstreaminfo(smb_fname->fsp, ctx, + &num_streams, &streams); + /* There is always one stream, ::$DATA. */ + if (NT_STATUS_IS_OK(status) && num_streams > 1) { + file_status &= ~NO_SUBSTREAMS; + } + TALLOC_FREE(streams); + SSVAL(p,2,file_status); + } + p += 4; + SCVAL(p,0,fsp->fsp_flags.is_directory ? 1 : 0); + + if (flags & EXTENDED_RESPONSE_REQUIRED) { + uint32_t perms = 0; + p += 25; + if (fsp->fsp_flags.is_directory || + fsp->fsp_flags.can_write || + can_write_to_fsp(fsp)) + { + perms = FILE_GENERIC_ALL; + } else { + perms = FILE_GENERIC_READ|FILE_EXECUTE; + } + SIVAL(p,0,perms); + } + + DEBUG(5,("reply_ntcreate_and_X: %s, open name = %s\n", + fsp_fnum_dbg(fsp), smb_fname_str_dbg(smb_fname))); + + out: + END_PROFILE(SMBntcreateX); + return; +} + +/**************************************************************************** + Reply to a NT_TRANSACT_CREATE call to open a pipe. +****************************************************************************/ + +static void do_nt_transact_create_pipe(connection_struct *conn, + struct smb_request *req, + uint16_t **ppsetup, uint32_t setup_count, + char **ppparams, uint32_t parameter_count, + char **ppdata, uint32_t data_count) +{ + char *fname = NULL; + char *params = *ppparams; + uint16_t pnum = FNUM_FIELD_INVALID; + char *p = NULL; + NTSTATUS status; + size_t param_len; + uint32_t flags; + TALLOC_CTX *ctx = talloc_tos(); + + /* + * Ensure minimum number of parameters sent. + */ + + if(parameter_count < 54) { + DEBUG(0,("do_nt_transact_create_pipe - insufficient parameters (%u)\n", (unsigned int)parameter_count)); + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + flags = IVAL(params,0); + + if (req->posix_pathnames) { + srvstr_get_path_posix(ctx, + params, + req->flags2, + &fname, + params+53, + parameter_count-53, + STR_TERMINATE, + &status); + } else { + srvstr_get_path(ctx, + params, + req->flags2, + &fname, + params+53, + parameter_count-53, + STR_TERMINATE, + &status); + } + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + return; + } + + nt_open_pipe(fname, conn, req, &pnum); + + if (req->outbuf) { + /* Error return */ + return; + } + + /* Realloc the size of parameters and data we will return */ + if (flags & EXTENDED_RESPONSE_REQUIRED) { + /* Extended response is 32 more byyes. */ + param_len = 101; + } else { + param_len = 69; + } + params = nttrans_realloc(ppparams, param_len); + if(params == NULL) { + reply_nterror(req, NT_STATUS_NO_MEMORY); + return; + } + + p = params; + SCVAL(p,0,NO_OPLOCK_RETURN); + + p += 2; + SSVAL(p,0,pnum); + p += 2; + SIVAL(p,0,FILE_WAS_OPENED); + p += 8; + + p += 32; + SIVAL(p,0,FILE_ATTRIBUTE_NORMAL); /* File Attributes. */ + p += 20; + /* File type. */ + SSVAL(p,0,FILE_TYPE_MESSAGE_MODE_PIPE); + /* Device state. */ + SSVAL(p,2, 0x5FF); /* ? */ + p += 4; + + if (flags & EXTENDED_RESPONSE_REQUIRED) { + p += 25; + SIVAL(p,0,FILE_GENERIC_ALL); + /* + * For pipes W2K3 seems to return + * 0x12019B next. + * This is ((FILE_GENERIC_READ|FILE_GENERIC_WRITE) & ~FILE_APPEND_DATA) + */ + SIVAL(p,4,(FILE_GENERIC_READ|FILE_GENERIC_WRITE)&~FILE_APPEND_DATA); + } + + DEBUG(5,("do_nt_transact_create_pipe: open name = %s\n", fname)); + + /* Send the required number of replies */ + send_nt_replies(conn, req, NT_STATUS_OK, params, param_len, *ppdata, 0); + + return; +} + +/**************************************************************************** + Reply to a NT_TRANSACT_CREATE call (needs to process SD's). +****************************************************************************/ + +static void call_nt_transact_create(connection_struct *conn, + struct smb_request *req, + uint16_t **ppsetup, uint32_t setup_count, + char **ppparams, uint32_t parameter_count, + char **ppdata, uint32_t data_count, + uint32_t max_data_count) +{ + struct smb_filename *smb_fname = NULL; + char *fname = NULL; + char *params = *ppparams; + char *data = *ppdata; + /* Breakout the oplock request bits so we can set the reply bits separately. */ + uint32_t fattr=0; + off_t file_len = 0; + int info = 0; + struct files_struct *dirfsp = NULL; + files_struct *fsp = NULL; + char *p = NULL; + uint32_t flags; + uint32_t access_mask; + uint32_t file_attributes; + uint32_t share_access; + uint32_t create_disposition; + uint32_t create_options; + uint32_t sd_len; + struct security_descriptor *sd = NULL; + uint32_t ea_len; + uint16_t root_dir_fid; + struct timespec create_timespec; + struct timespec c_timespec; + struct timespec a_timespec; + struct timespec m_timespec; + struct ea_list *ea_list = NULL; + NTSTATUS status; + size_t param_len; + uint64_t allocation_size; + int oplock_request; + uint8_t oplock_granted; + struct case_semantics_state *case_state = NULL; + uint32_t ucf_flags; + NTTIME twrp = 0; + TALLOC_CTX *ctx = talloc_tos(); + + DEBUG(5,("call_nt_transact_create\n")); + + /* + * If it's an IPC, use the pipe handler. + */ + + if (IS_IPC(conn)) { + if (lp_nt_pipe_support()) { + do_nt_transact_create_pipe( + conn, req, + ppsetup, setup_count, + ppparams, parameter_count, + ppdata, data_count); + goto out; + } + reply_nterror(req, NT_STATUS_ACCESS_DENIED); + goto out; + } + + /* + * Ensure minimum number of parameters sent. + */ + + if(parameter_count < 54) { + DEBUG(0,("call_nt_transact_create - insufficient parameters (%u)\n", (unsigned int)parameter_count)); + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + goto out; + } + + flags = IVAL(params,0); + access_mask = IVAL(params,8); + file_attributes = IVAL(params,20); + share_access = IVAL(params,24); + create_disposition = IVAL(params,28); + create_options = IVAL(params,32); + sd_len = IVAL(params,36); + ea_len = IVAL(params,40); + root_dir_fid = (uint16_t)IVAL(params,4); + allocation_size = BVAL(params,12); + + /* + * we need to remove ignored bits when they come directly from the client + * because we reuse some of them for internal stuff + */ + create_options &= ~NTCREATEX_OPTIONS_MUST_IGNORE_MASK; + + if (req->posix_pathnames) { + srvstr_get_path_posix(ctx, + params, + req->flags2, + &fname, + params+53, + parameter_count-53, + STR_TERMINATE, + &status); + } else { + srvstr_get_path(ctx, + params, + req->flags2, + &fname, + params+53, + parameter_count-53, + STR_TERMINATE, + &status); + } + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + goto out; + } + + if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) { + case_state = set_posix_case_semantics(ctx, conn); + if (!case_state) { + reply_nterror(req, NT_STATUS_NO_MEMORY); + goto out; + } + } + + if (root_dir_fid != 0) { + char *new_fname = NULL; + + status = get_relative_fid_filename(conn, + req, + root_dir_fid, + fname, + &new_fname); + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + goto out; + } + fname = new_fname; + } + + ucf_flags = filename_create_ucf_flags(req, create_disposition); + if (ucf_flags & UCF_GMT_PATHNAME) { + extract_snapshot_token(fname, &twrp); + } + status = smb1_strip_dfs_path(ctx, &ucf_flags, &fname); + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + goto out; + } + + status = filename_convert_dirfsp(ctx, + conn, + fname, + ucf_flags, + twrp, + &dirfsp, + &smb_fname); + + TALLOC_FREE(case_state); + + if (!NT_STATUS_IS_OK(status)) { + if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) { + reply_botherror(req, + NT_STATUS_PATH_NOT_COVERED, + ERRSRV, ERRbadpath); + goto out; + } + reply_nterror(req, status); + goto out; + } + + /* Ensure the data_len is correct for the sd and ea values given. */ + if ((ea_len + sd_len > data_count) + || (ea_len > data_count) || (sd_len > data_count) + || (ea_len + sd_len < ea_len) || (ea_len + sd_len < sd_len)) { + DEBUG(10, ("call_nt_transact_create - ea_len = %u, sd_len = " + "%u, data_count = %u\n", (unsigned int)ea_len, + (unsigned int)sd_len, (unsigned int)data_count)); + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + goto out; + } + + if (sd_len) { + DEBUG(10, ("call_nt_transact_create - sd_len = %d\n", + sd_len)); + + status = unmarshall_sec_desc(ctx, (uint8_t *)data, sd_len, + &sd); + if (!NT_STATUS_IS_OK(status)) { + DEBUG(10, ("call_nt_transact_create: " + "unmarshall_sec_desc failed: %s\n", + nt_errstr(status))); + reply_nterror(req, status); + goto out; + } + } + + if (ea_len) { + if (!lp_ea_support(SNUM(conn))) { + DEBUG(10, ("call_nt_transact_create - ea_len = %u but " + "EA's not supported.\n", + (unsigned int)ea_len)); + reply_nterror(req, NT_STATUS_EAS_NOT_SUPPORTED); + goto out; + } + + if (ea_len < 10) { + DEBUG(10,("call_nt_transact_create - ea_len = %u - " + "too small (should be more than 10)\n", + (unsigned int)ea_len )); + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + goto out; + } + + /* We have already checked that ea_len <= data_count here. */ + ea_list = read_nttrans_ea_list(talloc_tos(), data + sd_len, + ea_len); + if (ea_list == NULL) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + goto out; + } + + if (!req->posix_pathnames && + ea_list_has_invalid_name(ea_list)) { + /* Realloc the size of parameters and data we will return */ + if (flags & EXTENDED_RESPONSE_REQUIRED) { + /* Extended response is 32 more bytes. */ + param_len = 101; + } else { + param_len = 69; + } + params = nttrans_realloc(ppparams, param_len); + if(params == NULL) { + reply_nterror(req, NT_STATUS_NO_MEMORY); + goto out; + } + + memset(params, '\0', param_len); + send_nt_replies(conn, req, STATUS_INVALID_EA_NAME, + params, param_len, NULL, 0); + goto out; + } + } + + oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0; + if (oplock_request) { + oplock_request |= (flags & REQUEST_BATCH_OPLOCK) + ? BATCH_OPLOCK : 0; + } + + /* + * Bug #6898 - clients using Windows opens should + * never be able to set this attribute into the + * VFS. + */ + file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS; + + status = SMB_VFS_CREATE_FILE( + conn, /* conn */ + req, /* req */ + dirfsp, /* dirfsp */ + smb_fname, /* fname */ + access_mask, /* access_mask */ + share_access, /* share_access */ + create_disposition, /* create_disposition*/ + create_options, /* create_options */ + file_attributes, /* file_attributes */ + oplock_request, /* oplock_request */ + NULL, /* lease */ + allocation_size, /* allocation_size */ + 0, /* private_flags */ + sd, /* sd */ + ea_list, /* ea_list */ + &fsp, /* result */ + &info, /* pinfo */ + NULL, NULL); /* create context */ + + if(!NT_STATUS_IS_OK(status)) { + if (open_was_deferred(req->xconn, req->mid)) { + /* We have re-scheduled this call, no error. */ + return; + } + if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) { + bool ok = defer_smb1_sharing_violation(req); + if (ok) { + return; + } + } + reply_openerror(req, status); + goto out; + } + + /* Ensure we're pointing at the correct stat struct. */ + TALLOC_FREE(smb_fname); + smb_fname = fsp->fsp_name; + + /* + * If the caller set the extended oplock request bit + * and we granted one (by whatever means) - set the + * correct bit for extended oplock reply. + */ + + if (oplock_request && + (lp_fake_oplocks(SNUM(conn)) + || EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))) { + + /* + * Exclusive oplock granted + */ + + if (flags & REQUEST_BATCH_OPLOCK) { + oplock_granted = BATCH_OPLOCK_RETURN; + } else { + oplock_granted = EXCLUSIVE_OPLOCK_RETURN; + } + } else if (fsp->oplock_type == LEVEL_II_OPLOCK) { + oplock_granted = LEVEL_II_OPLOCK_RETURN; + } else { + oplock_granted = NO_OPLOCK_RETURN; + } + + file_len = smb_fname->st.st_ex_size; + + /* Realloc the size of parameters and data we will return */ + if (flags & EXTENDED_RESPONSE_REQUIRED) { + /* Extended response is 32 more byyes. */ + param_len = 101; + } else { + param_len = 69; + } + params = nttrans_realloc(ppparams, param_len); + if(params == NULL) { + reply_nterror(req, NT_STATUS_NO_MEMORY); + goto out; + } + + p = params; + SCVAL(p, 0, oplock_granted); + + p += 2; + SSVAL(p,0,fsp->fnum); + p += 2; + if ((create_disposition == FILE_SUPERSEDE) + && (info == FILE_WAS_OVERWRITTEN)) { + SIVAL(p,0,FILE_WAS_SUPERSEDED); + } else { + SIVAL(p,0,info); + } + p += 8; + + fattr = fdos_mode(fsp); + if (fattr == 0) { + fattr = FILE_ATTRIBUTE_NORMAL; + } + + /* Create time. */ + create_timespec = get_create_timespec(conn, fsp, smb_fname); + a_timespec = smb_fname->st.st_ex_atime; + m_timespec = smb_fname->st.st_ex_mtime; + c_timespec = get_change_timespec(conn, fsp, smb_fname); + + if (lp_dos_filetime_resolution(SNUM(conn))) { + dos_filetime_timespec(&create_timespec); + dos_filetime_timespec(&a_timespec); + dos_filetime_timespec(&m_timespec); + dos_filetime_timespec(&c_timespec); + } + + put_long_date_full_timespec(conn->ts_res, p, &create_timespec); /* create time. */ + p += 8; + put_long_date_full_timespec(conn->ts_res, p, &a_timespec); /* access time */ + p += 8; + put_long_date_full_timespec(conn->ts_res, p, &m_timespec); /* write time */ + p += 8; + put_long_date_full_timespec(conn->ts_res, p, &c_timespec); /* change time */ + p += 8; + SIVAL(p,0,fattr); /* File Attributes. */ + p += 4; + SOFF_T(p, 0, SMB_VFS_GET_ALLOC_SIZE(conn, fsp, &smb_fname->st)); + p += 8; + SOFF_T(p,0,file_len); + p += 8; + if (flags & EXTENDED_RESPONSE_REQUIRED) { + uint16_t file_status = (NO_EAS|NO_SUBSTREAMS|NO_REPARSETAG); + unsigned int num_streams = 0; + struct stream_struct *streams = NULL; + + if (lp_ea_support(SNUM(conn))) { + size_t num_names = 0; + /* Do we have any EA's ? */ + status = get_ea_names_from_fsp( + ctx, smb_fname->fsp, NULL, &num_names); + if (NT_STATUS_IS_OK(status) && num_names) { + file_status &= ~NO_EAS; + } + } + + status = vfs_fstreaminfo(smb_fname->fsp, ctx, + &num_streams, &streams); + /* There is always one stream, ::$DATA. */ + if (NT_STATUS_IS_OK(status) && num_streams > 1) { + file_status &= ~NO_SUBSTREAMS; + } + TALLOC_FREE(streams); + SSVAL(p,2,file_status); + } + p += 4; + SCVAL(p,0,fsp->fsp_flags.is_directory ? 1 : 0); + + if (flags & EXTENDED_RESPONSE_REQUIRED) { + uint32_t perms = 0; + p += 25; + if (fsp->fsp_flags.is_directory || + fsp->fsp_flags.can_write || + can_write_to_fsp(fsp)) + { + perms = FILE_GENERIC_ALL; + } else { + perms = FILE_GENERIC_READ|FILE_EXECUTE; + } + SIVAL(p,0,perms); + } + + DEBUG(5,("call_nt_transact_create: open name = %s\n", + smb_fname_str_dbg(smb_fname))); + + /* Send the required number of replies */ + send_nt_replies(conn, req, NT_STATUS_OK, params, param_len, *ppdata, 0); + out: + return; +} + +/**************************************************************************** + Reply to a NT CANCEL request. + conn POINTER CAN BE NULL HERE ! +****************************************************************************/ + +void reply_ntcancel(struct smb_request *req) +{ + struct smbXsrv_connection *xconn = req->xconn; + struct smbd_server_connection *sconn = req->sconn; + bool found; + + /* + * Go through and cancel any pending change notifies. + */ + + START_PROFILE(SMBntcancel); + smb1_srv_cancel_sign_response(xconn); + found = remove_pending_change_notify_requests_by_mid(sconn, req->mid); + if (!found) { + smbd_smb1_brl_finish_by_mid(sconn, req->mid); + } + + DEBUG(3,("reply_ntcancel: cancel called on mid = %llu.\n", + (unsigned long long)req->mid)); + + END_PROFILE(SMBntcancel); + return; +} + +/**************************************************************************** + Reply to a NT rename request. +****************************************************************************/ + +void reply_ntrename(struct smb_request *req) +{ + connection_struct *conn = req->conn; + struct files_struct *src_dirfsp = NULL; + struct smb_filename *smb_fname_old = NULL; + struct files_struct *dst_dirfsp = NULL; + struct smb_filename *smb_fname_new = NULL; + char *oldname = NULL; + char *newname = NULL; + const char *dst_original_lcomp = NULL; + const char *p; + NTSTATUS status; + uint32_t attrs; + uint32_t ucf_flags_src = ucf_flags_from_smb_request(req); + NTTIME src_twrp = 0; + uint32_t ucf_flags_dst = ucf_flags_from_smb_request(req); + NTTIME dst_twrp = 0; + uint16_t rename_type; + TALLOC_CTX *ctx = talloc_tos(); + bool stream_rename = false; + + START_PROFILE(SMBntrename); + + if (req->wct < 4) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + goto out; + } + + attrs = SVAL(req->vwv+0, 0); + rename_type = SVAL(req->vwv+1, 0); + + p = (const char *)req->buf + 1; + p += srvstr_get_path_req(ctx, req, &oldname, p, STR_TERMINATE, + &status); + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + goto out; + } + + if (!req->posix_pathnames && ms_has_wild(oldname)) { + reply_nterror(req, NT_STATUS_OBJECT_PATH_SYNTAX_BAD); + goto out; + } + + p++; + p += srvstr_get_path_req(ctx, req, &newname, p, STR_TERMINATE, + &status); + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + goto out; + } + + if (!req->posix_pathnames && ms_has_wild(newname)) { + reply_nterror(req, NT_STATUS_OBJECT_PATH_SYNTAX_BAD); + goto out; + } + + if (!req->posix_pathnames) { + /* The newname must begin with a ':' if the + oldname contains a ':'. */ + if (strchr_m(oldname, ':')) { + if (newname[0] != ':') { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + goto out; + } + stream_rename = true; + } + } + + if (ucf_flags_src & UCF_GMT_PATHNAME) { + extract_snapshot_token(oldname, &src_twrp); + } + status = smb1_strip_dfs_path(ctx, &ucf_flags_src, &oldname); + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + goto out; + } + + status = filename_convert_dirfsp(ctx, + conn, + oldname, + ucf_flags_src, + src_twrp, + &src_dirfsp, + &smb_fname_old); + if (!NT_STATUS_IS_OK(status)) { + if (NT_STATUS_EQUAL(status, + NT_STATUS_PATH_NOT_COVERED)) { + reply_botherror(req, + NT_STATUS_PATH_NOT_COVERED, + ERRSRV, ERRbadpath); + goto out; + } + reply_nterror(req, status); + goto out; + } + + if (stream_rename) { + /* + * No point in calling filename_convert() + * on a raw stream name. It can never find + * the file anyway. Use the same logic as + * SMB2_FILE_RENAME_INFORMATION_INTERNAL + * and generate smb_fname_new directly. + */ + smb_fname_new = synthetic_smb_fname(talloc_tos(), + smb_fname_old->base_name, + newname, + NULL, + smb_fname_old->twrp, + smb_fname_old->flags); + if (smb_fname_new == NULL) { + reply_nterror(req, NT_STATUS_NO_MEMORY); + goto out; + } + } else { + if (ucf_flags_dst & UCF_GMT_PATHNAME) { + extract_snapshot_token(newname, + &dst_twrp); + } + status = smb1_strip_dfs_path(ctx, &ucf_flags_dst, &newname); + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + goto out; + } + status = filename_convert_dirfsp(ctx, + conn, + newname, + ucf_flags_dst, + dst_twrp, + &dst_dirfsp, + &smb_fname_new); + if (!NT_STATUS_IS_OK(status)) { + if (NT_STATUS_EQUAL(status, + NT_STATUS_PATH_NOT_COVERED)) { + reply_botherror(req, + NT_STATUS_PATH_NOT_COVERED, + ERRSRV, ERRbadpath); + goto out; + } + reply_nterror(req, status); + goto out; + } + } + + /* Get the last component of the destination for rename_internals(). */ + dst_original_lcomp = get_original_lcomp(ctx, + conn, + newname, + ucf_flags_dst); + if (dst_original_lcomp == NULL) { + reply_nterror(req, NT_STATUS_NO_MEMORY); + goto out; + } + + + DEBUG(3,("reply_ntrename: %s -> %s\n", + smb_fname_str_dbg(smb_fname_old), + smb_fname_str_dbg(smb_fname_new))); + + switch(rename_type) { + case RENAME_FLAG_RENAME: + status = rename_internals(ctx, + conn, + req, + src_dirfsp, + smb_fname_old, + smb_fname_new, + dst_original_lcomp, + attrs, + false, + DELETE_ACCESS); + break; + case RENAME_FLAG_HARD_LINK: + status = hardlink_internals(ctx, + conn, + req, + false, + smb_fname_old, + smb_fname_new); + break; + case RENAME_FLAG_COPY: + status = copy_internals(ctx, + conn, + req, + src_dirfsp, + smb_fname_old, + dst_dirfsp, + smb_fname_new, + attrs); + break; + case RENAME_FLAG_MOVE_CLUSTER_INFORMATION: + status = NT_STATUS_INVALID_PARAMETER; + break; + default: + status = NT_STATUS_ACCESS_DENIED; /* Default error. */ + break; + } + + if (!NT_STATUS_IS_OK(status)) { + if (open_was_deferred(req->xconn, req->mid)) { + /* We have re-scheduled this call. */ + goto out; + } + if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) { + bool ok = defer_smb1_sharing_violation(req); + if (ok) { + goto out; + } + } + + reply_nterror(req, status); + goto out; + } + + reply_smb1_outbuf(req, 0, 0); + out: + END_PROFILE(SMBntrename); + return; +} + +/**************************************************************************** + Reply to a notify change - queue the request and + don't allow a directory to be opened. +****************************************************************************/ + +static void smbd_smb1_notify_reply(struct smb_request *req, + NTSTATUS error_code, + uint8_t *buf, size_t len) +{ + send_nt_replies(req->conn, req, error_code, (char *)buf, len, NULL, 0); +} + +static void call_nt_transact_notify_change(connection_struct *conn, + struct smb_request *req, + uint16_t **ppsetup, + uint32_t setup_count, + char **ppparams, + uint32_t parameter_count, + char **ppdata, uint32_t data_count, + uint32_t max_data_count, + uint32_t max_param_count) +{ + uint16_t *setup = *ppsetup; + files_struct *fsp; + uint32_t filter; + NTSTATUS status; + bool recursive; + + if(setup_count < 6) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + fsp = file_fsp(req, SVAL(setup,4)); + filter = IVAL(setup, 0); + recursive = (SVAL(setup, 6) != 0) ? True : False; + + DEBUG(3,("call_nt_transact_notify_change\n")); + + if(!fsp) { + reply_nterror(req, NT_STATUS_INVALID_HANDLE); + return; + } + + { + char *filter_string; + + if (!(filter_string = notify_filter_string(NULL, filter))) { + reply_nterror(req,NT_STATUS_NO_MEMORY); + return; + } + + DEBUG(3,("call_nt_transact_notify_change: notify change " + "called on %s, filter = %s, recursive = %d\n", + fsp_str_dbg(fsp), filter_string, recursive)); + + TALLOC_FREE(filter_string); + } + + if((!fsp->fsp_flags.is_directory) || (conn != fsp->conn)) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + if (fsp->notify == NULL) { + + status = change_notify_create(fsp, + max_param_count, + filter, + recursive); + if (!NT_STATUS_IS_OK(status)) { + DEBUG(10, ("change_notify_create returned %s\n", + nt_errstr(status))); + reply_nterror(req, status); + return; + } + } + + if (change_notify_fsp_has_changes(fsp)) { + + /* + * We've got changes pending, respond immediately + */ + + /* + * TODO: write a torture test to check the filtering behaviour + * here. + */ + + change_notify_reply(req, + NT_STATUS_OK, + max_param_count, + fsp->notify, + smbd_smb1_notify_reply); + + /* + * change_notify_reply() above has independently sent its + * results + */ + return; + } + + /* + * No changes pending, queue the request + */ + + status = change_notify_add_request(req, + max_param_count, + filter, + recursive, fsp, + smbd_smb1_notify_reply); + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + } + return; +} + +/**************************************************************************** + Reply to an NT transact rename command. +****************************************************************************/ + +static void call_nt_transact_rename(connection_struct *conn, + struct smb_request *req, + uint16_t **ppsetup, uint32_t setup_count, + char **ppparams, uint32_t parameter_count, + char **ppdata, uint32_t data_count, + uint32_t max_data_count) +{ + char *params = *ppparams; + char *new_name = NULL; + files_struct *fsp = NULL; + NTSTATUS status; + TALLOC_CTX *ctx = talloc_tos(); + + if(parameter_count < 5) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + fsp = file_fsp(req, SVAL(params, 0)); + if (!check_fsp(conn, req, fsp)) { + return; + } + if (req->posix_pathnames) { + srvstr_get_path_posix(ctx, + params, + req->flags2, + &new_name, + params+4, + parameter_count - 4, + STR_TERMINATE, + &status); + } else { + srvstr_get_path(ctx, + params, + req->flags2, + &new_name, + params+4, + parameter_count - 4, + STR_TERMINATE, + &status); + } + + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + return; + } + + /* + * W2K3 ignores this request as the RAW-RENAME test + * demonstrates, so we do. + */ + send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0); + + DEBUG(3,("nt transact rename from = %s, to = %s ignored!\n", + fsp_str_dbg(fsp), new_name)); + + return; +} + +/**************************************************************************** + SMB1 reply to query a security descriptor. +****************************************************************************/ + +static void call_nt_transact_query_security_desc(connection_struct *conn, + struct smb_request *req, + uint16_t **ppsetup, + uint32_t setup_count, + char **ppparams, + uint32_t parameter_count, + char **ppdata, + uint32_t data_count, + uint32_t max_data_count) +{ + char *params = *ppparams; + char *data = *ppdata; + size_t sd_size = 0; + uint32_t security_info_wanted; + files_struct *fsp = NULL; + NTSTATUS status; + uint8_t *marshalled_sd = NULL; + + if(parameter_count < 8) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + fsp = file_fsp(req, SVAL(params,0)); + if(!fsp) { + reply_nterror(req, NT_STATUS_INVALID_HANDLE); + return; + } + + security_info_wanted = IVAL(params,4); + + DEBUG(3,("call_nt_transact_query_security_desc: file = %s, " + "info_wanted = 0x%x\n", fsp_str_dbg(fsp), + (unsigned int)security_info_wanted)); + + params = nttrans_realloc(ppparams, 4); + if(params == NULL) { + reply_nterror(req, NT_STATUS_NO_MEMORY); + return; + } + + /* + * Get the permissions to return. + */ + + status = smbd_do_query_security_desc(conn, + talloc_tos(), + fsp, + security_info_wanted & + SMB_SUPPORTED_SECINFO_FLAGS, + max_data_count, + &marshalled_sd, + &sd_size); + + if (NT_STATUS_EQUAL(status, NT_STATUS_BUFFER_TOO_SMALL)) { + SIVAL(params,0,(uint32_t)sd_size); + send_nt_replies(conn, req, NT_STATUS_BUFFER_TOO_SMALL, + params, 4, NULL, 0); + return; + } + + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + return; + } + + SMB_ASSERT(sd_size > 0); + + SIVAL(params,0,(uint32_t)sd_size); + + if (max_data_count < sd_size) { + send_nt_replies(conn, req, NT_STATUS_BUFFER_TOO_SMALL, + params, 4, NULL, 0); + return; + } + + /* + * Allocate the data we will return. + */ + + data = nttrans_realloc(ppdata, sd_size); + if(data == NULL) { + reply_nterror(req, NT_STATUS_NO_MEMORY); + return; + } + + memcpy(data, marshalled_sd, sd_size); + + send_nt_replies(conn, req, NT_STATUS_OK, params, 4, data, (int)sd_size); + + return; +} + +/**************************************************************************** + Reply to set a security descriptor. Map to UNIX perms or POSIX ACLs. +****************************************************************************/ + +static void call_nt_transact_set_security_desc(connection_struct *conn, + struct smb_request *req, + uint16_t **ppsetup, + uint32_t setup_count, + char **ppparams, + uint32_t parameter_count, + char **ppdata, + uint32_t data_count, + uint32_t max_data_count) +{ + char *params= *ppparams; + char *data = *ppdata; + files_struct *fsp = NULL; + uint32_t security_info_sent = 0; + NTSTATUS status; + + if(parameter_count < 8) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + if((fsp = file_fsp(req, SVAL(params,0))) == NULL) { + reply_nterror(req, NT_STATUS_INVALID_HANDLE); + return; + } + + if (!CAN_WRITE(fsp->conn)) { + reply_nterror(req, NT_STATUS_ACCESS_DENIED); + return; + } + + if(!lp_nt_acl_support(SNUM(conn))) { + goto done; + } + + security_info_sent = IVAL(params,4); + + DEBUG(3,("call_nt_transact_set_security_desc: file = %s, sent 0x%x\n", + fsp_str_dbg(fsp), (unsigned int)security_info_sent)); + + if (data_count == 0) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + return; + } + + status = set_sd_blob(fsp, (uint8_t *)data, data_count, + security_info_sent & SMB_SUPPORTED_SECINFO_FLAGS); + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + return; + } + + done: + send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0); + return; +} + +/**************************************************************************** + Reply to NT IOCTL +****************************************************************************/ + +static void call_nt_transact_ioctl(connection_struct *conn, + struct smb_request *req, + uint16_t **ppsetup, uint32_t setup_count, + char **ppparams, uint32_t parameter_count, + char **ppdata, uint32_t data_count, + uint32_t max_data_count) +{ + NTSTATUS status; + uint32_t function; + uint16_t fidnum; + files_struct *fsp; + uint8_t isFSctl; + uint8_t compfilter; + char *out_data = NULL; + uint32_t out_data_len = 0; + char *pdata = *ppdata; + TALLOC_CTX *ctx = talloc_tos(); + + if (setup_count != 8) { + DEBUG(3,("call_nt_transact_ioctl: invalid setup count %d\n", setup_count)); + reply_nterror(req, NT_STATUS_NOT_SUPPORTED); + return; + } + + function = IVAL(*ppsetup, 0); + fidnum = SVAL(*ppsetup, 4); + isFSctl = CVAL(*ppsetup, 6); + compfilter = CVAL(*ppsetup, 7); + + DEBUG(10, ("call_nt_transact_ioctl: function[0x%08X] FID[0x%04X] isFSctl[0x%02X] compfilter[0x%02X]\n", + function, fidnum, isFSctl, compfilter)); + + fsp=file_fsp(req, fidnum); + + /* + * We don't really implement IOCTLs, especially on files. + */ + if (!isFSctl) { + DEBUG(10, ("isFSctl: 0x%02X indicates IOCTL, not FSCTL!\n", + isFSctl)); + reply_nterror(req, NT_STATUS_NOT_SUPPORTED); + return; + } + + /* Has to be for an open file! */ + if (!check_fsp_open(conn, req, fsp)) { + return; + } + + /* + * out_data might be allocated by the VFS module, but talloc should be + * used, and should be cleaned up when the request ends. + */ + status = SMB_VFS_FSCTL(fsp, + ctx, + function, + req->flags2, + (uint8_t *)pdata, + data_count, + (uint8_t **)&out_data, + max_data_count, + &out_data_len); + if (!NT_STATUS_IS_OK(status)) { + reply_nterror(req, status); + } else { + send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, out_data, out_data_len); + } +} + + +#ifdef HAVE_SYS_QUOTAS +/**************************************************************************** + Reply to get user quota +****************************************************************************/ + +static void call_nt_transact_get_user_quota(connection_struct *conn, + struct smb_request *req, + uint16_t **ppsetup, + uint32_t setup_count, + char **ppparams, + uint32_t parameter_count, + char **ppdata, + uint32_t data_count, + uint32_t max_data_count) +{ + const struct loadparm_substitution *lp_sub = + loadparm_s3_global_substitution(); + NTSTATUS nt_status = NT_STATUS_OK; + char *params = *ppparams; + char *pdata = *ppdata; + int data_len = 0; + int param_len = 0; + files_struct *fsp = NULL; + DATA_BLOB blob = data_blob_null; + struct nttrans_query_quota_params info = {0}; + enum ndr_err_code err; + TALLOC_CTX *tmp_ctx = NULL; + uint32_t resp_len = 0; + uint8_t *resp_data = 0; + + tmp_ctx = talloc_init("ntquota_list"); + if (!tmp_ctx) { + nt_status = NT_STATUS_NO_MEMORY; + goto error; + } + + /* access check */ + if (get_current_uid(conn) != sec_initial_uid()) { + DEBUG(1,("get_user_quota: access_denied service [%s] user " + "[%s]\n", lp_servicename(talloc_tos(), lp_sub, SNUM(conn)), + conn->session_info->unix_info->unix_name)); + nt_status = NT_STATUS_ACCESS_DENIED; + goto error; + } + + blob.data = (uint8_t*)params; + blob.length = parameter_count; + + err = ndr_pull_struct_blob(&blob, tmp_ctx, &info, + (ndr_pull_flags_fn_t)ndr_pull_nttrans_query_quota_params); + + if (!NDR_ERR_CODE_IS_SUCCESS(err)) { + DEBUG(0,("TRANSACT_GET_USER_QUOTA: failed to pull " + "query_quota_params.\n")); + nt_status = NT_STATUS_INVALID_PARAMETER; + goto error; + } + DBG_DEBUG("info.return_single_entry = %u, info.restart_scan = %u, " + "info.sid_list_length = %u, info.start_sid_length = %u, " + "info.start_sid_offset = %u\n", + (unsigned int)info.return_single_entry, + (unsigned int)info.restart_scan, + (unsigned int)info.sid_list_length, + (unsigned int)info.start_sid_length, + (unsigned int)info.start_sid_offset); + + /* set blob to point at data for further parsing */ + blob.data = (uint8_t*)pdata; + blob.length = data_count; + /* + * Although MS-SMB ref is ambiguous here, a microsoft client will + * only ever send a start sid (as part of a list) with + * sid_list_length & start_sid_offset both set to the actual list + * length. Note: Only a single result is returned in this case + * In the case where either start_sid_offset or start_sid_length + * are set alone or if both set (but have different values) then + * it seems windows will return a number of entries from the start + * of the list of users with quotas set. This behaviour is undocumented + * and windows clients do not send messages of that type. As such we + * currently will reject these requests. + */ + if (info.start_sid_length + || (info.sid_list_length != info.start_sid_offset)) { + DBG_ERR("TRANSACT_GET_USER_QUOTA: unsupported single or " + "compound sid format\n"); + nt_status = NT_STATUS_INVALID_PARAMETER; + goto error; + } + + /* maybe we can check the quota_fnum */ + fsp = file_fsp(req, info.fid); + if (!check_fsp_ntquota_handle(conn, req, fsp)) { + DEBUG(3,("TRANSACT_GET_USER_QUOTA: no valid QUOTA HANDLE\n")); + nt_status = NT_STATUS_INVALID_HANDLE; + goto error; + } + nt_status = smbd_do_query_getinfo_quota(tmp_ctx, + fsp, + info.restart_scan, + info.return_single_entry, + info.sid_list_length, + &blob, + max_data_count, + &resp_data, + &resp_len); + if (!NT_STATUS_IS_OK(nt_status)) { + if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MORE_ENTRIES)) { + goto error; + } + nt_status = NT_STATUS_OK; + } + + param_len = 4; + params = nttrans_realloc(ppparams, param_len); + if(params == NULL) { + nt_status = NT_STATUS_NO_MEMORY; + goto error; + } + + data_len = resp_len; + SIVAL(params, 0, data_len); + pdata = nttrans_realloc(ppdata, data_len); + memcpy(pdata, resp_data, data_len); + + TALLOC_FREE(tmp_ctx); + send_nt_replies(conn, req, nt_status, params, param_len, + pdata, data_len); + return; +error: + TALLOC_FREE(tmp_ctx); + reply_nterror(req, nt_status); +} + +/**************************************************************************** + Reply to set user quota +****************************************************************************/ + +static void call_nt_transact_set_user_quota(connection_struct *conn, + struct smb_request *req, + uint16_t **ppsetup, + uint32_t setup_count, + char **ppparams, + uint32_t parameter_count, + char **ppdata, + uint32_t data_count, + uint32_t max_data_count) +{ + const struct loadparm_substitution *lp_sub = + loadparm_s3_global_substitution(); + char *params = *ppparams; + char *pdata = *ppdata; + int data_len=0,param_len=0; + SMB_NTQUOTA_STRUCT qt; + struct file_quota_information info = {0}; + enum ndr_err_code err; + struct dom_sid sid; + DATA_BLOB inblob; + files_struct *fsp = NULL; + TALLOC_CTX *ctx = NULL; + NTSTATUS status = NT_STATUS_OK; + ZERO_STRUCT(qt); + + /* access check */ + if (get_current_uid(conn) != sec_initial_uid()) { + DEBUG(1,("set_user_quota: access_denied service [%s] user " + "[%s]\n", lp_servicename(talloc_tos(), lp_sub, SNUM(conn)), + conn->session_info->unix_info->unix_name)); + status = NT_STATUS_ACCESS_DENIED; + goto error; + } + + /* + * Ensure minimum number of parameters sent. + */ + + if (parameter_count < 2) { + DEBUG(0,("TRANSACT_SET_USER_QUOTA: requires %d >= 2 bytes parameters\n",parameter_count)); + status = NT_STATUS_INVALID_PARAMETER; + goto error; + } + + /* maybe we can check the quota_fnum */ + fsp = file_fsp(req, SVAL(params,0)); + if (!check_fsp_ntquota_handle(conn, req, fsp)) { + DEBUG(3,("TRANSACT_GET_USER_QUOTA: no valid QUOTA HANDLE\n")); + status = NT_STATUS_INVALID_HANDLE; + goto error; + } + + ctx = talloc_init("set_user_quota"); + if (!ctx) { + status = NT_STATUS_NO_MEMORY; + goto error; + } + inblob.data = (uint8_t*)pdata; + inblob.length = data_count; + + err = ndr_pull_struct_blob( + &inblob, + ctx, + &info, + (ndr_pull_flags_fn_t)ndr_pull_file_quota_information); + + if (!NDR_ERR_CODE_IS_SUCCESS(err)) { + DEBUG(0,("TRANSACT_SET_USER_QUOTA: failed to pull " + "file_quota_information\n")); + status = NT_STATUS_INVALID_PARAMETER; + goto error; + } + qt.usedspace = info.quota_used; + + qt.softlim = info.quota_threshold; + + qt.hardlim = info.quota_limit; + + sid = info.sid; + + if (vfs_set_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &qt)!=0) { + status = NT_STATUS_INTERNAL_ERROR; + goto error; + } + + send_nt_replies(conn, req, NT_STATUS_OK, params, param_len, + pdata, data_len); + TALLOC_FREE(ctx); + return; +error: + TALLOC_FREE(ctx); + reply_nterror(req, status); +} +#endif /* HAVE_SYS_QUOTAS */ + +static void handle_nttrans(connection_struct *conn, + struct trans_state *state, + struct smb_request *req) +{ + struct smbXsrv_connection *xconn = req->xconn; + + if (xconn->protocol >= PROTOCOL_NT1) { + req->flags2 |= 0x40; /* IS_LONG_NAME */ + SSVAL(discard_const_p(uint8_t, req->inbuf),smb_flg2,req->flags2); + } + + + /* Now we must call the relevant NT_TRANS function */ + switch(state->call) { + case NT_TRANSACT_CREATE: + { + START_PROFILE(NT_transact_create); + call_nt_transact_create( + conn, req, + &state->setup, state->setup_count, + &state->param, state->total_param, + &state->data, state->total_data, + state->max_data_return); + END_PROFILE(NT_transact_create); + break; + } + + case NT_TRANSACT_IOCTL: + { + START_PROFILE(NT_transact_ioctl); + call_nt_transact_ioctl( + conn, req, + &state->setup, state->setup_count, + &state->param, state->total_param, + &state->data, state->total_data, + state->max_data_return); + END_PROFILE(NT_transact_ioctl); + break; + } + + case NT_TRANSACT_SET_SECURITY_DESC: + { + START_PROFILE(NT_transact_set_security_desc); + call_nt_transact_set_security_desc( + conn, req, + &state->setup, state->setup_count, + &state->param, state->total_param, + &state->data, state->total_data, + state->max_data_return); + END_PROFILE(NT_transact_set_security_desc); + break; + } + + case NT_TRANSACT_NOTIFY_CHANGE: + { + START_PROFILE(NT_transact_notify_change); + call_nt_transact_notify_change( + conn, req, + &state->setup, state->setup_count, + &state->param, state->total_param, + &state->data, state->total_data, + state->max_data_return, + state->max_param_return); + END_PROFILE(NT_transact_notify_change); + break; + } + + case NT_TRANSACT_RENAME: + { + START_PROFILE(NT_transact_rename); + call_nt_transact_rename( + conn, req, + &state->setup, state->setup_count, + &state->param, state->total_param, + &state->data, state->total_data, + state->max_data_return); + END_PROFILE(NT_transact_rename); + break; + } + + case NT_TRANSACT_QUERY_SECURITY_DESC: + { + START_PROFILE(NT_transact_query_security_desc); + call_nt_transact_query_security_desc( + conn, req, + &state->setup, state->setup_count, + &state->param, state->total_param, + &state->data, state->total_data, + state->max_data_return); + END_PROFILE(NT_transact_query_security_desc); + break; + } + +#ifdef HAVE_SYS_QUOTAS + case NT_TRANSACT_GET_USER_QUOTA: + { + START_PROFILE(NT_transact_get_user_quota); + call_nt_transact_get_user_quota( + conn, req, + &state->setup, state->setup_count, + &state->param, state->total_param, + &state->data, state->total_data, + state->max_data_return); + END_PROFILE(NT_transact_get_user_quota); + break; + } + + case NT_TRANSACT_SET_USER_QUOTA: + { + START_PROFILE(NT_transact_set_user_quota); + call_nt_transact_set_user_quota( + conn, req, + &state->setup, state->setup_count, + &state->param, state->total_param, + &state->data, state->total_data, + state->max_data_return); + END_PROFILE(NT_transact_set_user_quota); + break; + } +#endif /* HAVE_SYS_QUOTAS */ + + default: + /* Error in request */ + DEBUG(0,("handle_nttrans: Unknown request %d in " + "nttrans call\n", state->call)); + reply_nterror(req, NT_STATUS_INVALID_LEVEL); + return; + } + return; +} + +/**************************************************************************** + Reply to a SMBNTtrans. +****************************************************************************/ + +void reply_nttrans(struct smb_request *req) +{ + connection_struct *conn = req->conn; + uint32_t pscnt; + uint32_t psoff; + uint32_t dscnt; + uint32_t dsoff; + uint16_t function_code; + NTSTATUS result; + struct trans_state *state; + + START_PROFILE(SMBnttrans); + + if (req->wct < 19) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + END_PROFILE(SMBnttrans); + return; + } + + pscnt = IVAL(req->vwv+9, 1); + psoff = IVAL(req->vwv+11, 1); + dscnt = IVAL(req->vwv+13, 1); + dsoff = IVAL(req->vwv+15, 1); + function_code = SVAL(req->vwv+18, 0); + + if (IS_IPC(conn) && (function_code != NT_TRANSACT_CREATE)) { + reply_nterror(req, NT_STATUS_ACCESS_DENIED); + END_PROFILE(SMBnttrans); + return; + } + + result = allow_new_trans(conn->pending_trans, req->mid); + if (!NT_STATUS_IS_OK(result)) { + DEBUG(2, ("Got invalid nttrans request: %s\n", nt_errstr(result))); + reply_nterror(req, result); + END_PROFILE(SMBnttrans); + return; + } + + if ((state = talloc(conn, struct trans_state)) == NULL) { + reply_nterror(req, NT_STATUS_NO_MEMORY); + END_PROFILE(SMBnttrans); + return; + } + + state->cmd = SMBnttrans; + + state->mid = req->mid; + state->vuid = req->vuid; + state->total_data = IVAL(req->vwv+3, 1); + state->data = NULL; + state->total_param = IVAL(req->vwv+1, 1); + state->param = NULL; + state->max_data_return = IVAL(req->vwv+7, 1); + state->max_param_return = IVAL(req->vwv+5, 1); + + /* setup count is in *words* */ + state->setup_count = 2*CVAL(req->vwv+17, 1); + state->setup = NULL; + state->call = function_code; + + DEBUG(10, ("num_setup=%u, " + "param_total=%u, this_param=%u, max_param=%u, " + "data_total=%u, this_data=%u, max_data=%u, " + "param_offset=%u, data_offset=%u\n", + (unsigned)state->setup_count, + (unsigned)state->total_param, (unsigned)pscnt, + (unsigned)state->max_param_return, + (unsigned)state->total_data, (unsigned)dscnt, + (unsigned)state->max_data_return, + (unsigned)psoff, (unsigned)dsoff)); + + /* + * All nttrans messages we handle have smb_wct == 19 + + * state->setup_count. Ensure this is so as a sanity check. + */ + + if(req->wct != 19 + (state->setup_count/2)) { + DEBUG(2,("Invalid smb_wct %d in nttrans call (should be %d)\n", + req->wct, 19 + (state->setup_count/2))); + goto bad_param; + } + + /* Don't allow more than 128mb for each value. */ + if ((state->total_data > (1024*1024*128)) || + (state->total_param > (1024*1024*128))) { + reply_nterror(req, NT_STATUS_NO_MEMORY); + END_PROFILE(SMBnttrans); + return; + } + + if ((dscnt > state->total_data) || (pscnt > state->total_param)) + goto bad_param; + + if (state->total_data) { + + if (smb_buffer_oob(state->total_data, 0, dscnt) + || smb_buffer_oob(smb_len(req->inbuf), dsoff, dscnt)) { + goto bad_param; + } + + /* Can't use talloc here, the core routines do realloc on the + * params and data. */ + if ((state->data = (char *)SMB_MALLOC(state->total_data)) == NULL) { + DEBUG(0,("reply_nttrans: data malloc fail for %u " + "bytes !\n", (unsigned int)state->total_data)); + TALLOC_FREE(state); + reply_nterror(req, NT_STATUS_NO_MEMORY); + END_PROFILE(SMBnttrans); + return; + } + + memcpy(state->data,smb_base(req->inbuf)+dsoff,dscnt); + } + + if (state->total_param) { + + if (smb_buffer_oob(state->total_param, 0, pscnt) + || smb_buffer_oob(smb_len(req->inbuf), psoff, pscnt)) { + goto bad_param; + } + + /* Can't use talloc here, the core routines do realloc on the + * params and data. */ + if ((state->param = (char *)SMB_MALLOC(state->total_param)) == NULL) { + DEBUG(0,("reply_nttrans: param malloc fail for %u " + "bytes !\n", (unsigned int)state->total_param)); + SAFE_FREE(state->data); + TALLOC_FREE(state); + reply_nterror(req, NT_STATUS_NO_MEMORY); + END_PROFILE(SMBnttrans); + return; + } + + memcpy(state->param,smb_base(req->inbuf)+psoff,pscnt); + } + + state->received_data = dscnt; + state->received_param = pscnt; + + if(state->setup_count > 0) { + DEBUG(10,("reply_nttrans: state->setup_count = %d\n", + state->setup_count)); + + /* + * No overflow possible here, state->setup_count is an + * unsigned int, being filled by a single byte from + * CVAL(req->vwv+13, 0) above. The cast in the comparison + * below is not necessary, it's here to clarify things. The + * validity of req->vwv and req->wct has been checked in + * init_smb1_request already. + */ + if ((state->setup_count/2) + 19 > (unsigned int)req->wct) { + goto bad_param; + } + + state->setup = (uint16_t *)TALLOC(state, state->setup_count); + if (state->setup == NULL) { + DEBUG(0,("reply_nttrans : Out of memory\n")); + SAFE_FREE(state->data); + SAFE_FREE(state->param); + TALLOC_FREE(state); + reply_nterror(req, NT_STATUS_NO_MEMORY); + END_PROFILE(SMBnttrans); + return; + } + + memcpy(state->setup, req->vwv+19, state->setup_count); + dump_data(10, (uint8_t *)state->setup, state->setup_count); + } + + if ((state->received_data == state->total_data) && + (state->received_param == state->total_param)) { + handle_nttrans(conn, state, req); + SAFE_FREE(state->param); + SAFE_FREE(state->data); + TALLOC_FREE(state); + END_PROFILE(SMBnttrans); + return; + } + + DLIST_ADD(conn->pending_trans, state); + + /* We need to send an interim response then receive the rest + of the parameter/data bytes */ + reply_smb1_outbuf(req, 0, 0); + show_msg((char *)req->outbuf); + END_PROFILE(SMBnttrans); + return; + + bad_param: + + DEBUG(0,("reply_nttrans: invalid trans parameters\n")); + SAFE_FREE(state->data); + SAFE_FREE(state->param); + TALLOC_FREE(state); + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + END_PROFILE(SMBnttrans); + return; +} + +/**************************************************************************** + Reply to a SMBnttranss + ****************************************************************************/ + +void reply_nttranss(struct smb_request *req) +{ + connection_struct *conn = req->conn; + uint32_t pcnt,poff,dcnt,doff,pdisp,ddisp; + struct trans_state *state; + + START_PROFILE(SMBnttranss); + + show_msg((const char *)req->inbuf); + + /* Windows clients expect all replies to + an NT transact secondary (SMBnttranss 0xA1) + to have a command code of NT transact + (SMBnttrans 0xA0). See bug #8989 for details. */ + req->cmd = SMBnttrans; + + if (req->wct < 18) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + END_PROFILE(SMBnttranss); + return; + } + + for (state = conn->pending_trans; state != NULL; + state = state->next) { + if (state->mid == req->mid) { + break; + } + } + + if ((state == NULL) || (state->cmd != SMBnttrans)) { + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + END_PROFILE(SMBnttranss); + return; + } + + /* Revise state->total_param and state->total_data in case they have + changed downwards */ + if (IVAL(req->vwv+1, 1) < state->total_param) { + state->total_param = IVAL(req->vwv+1, 1); + } + if (IVAL(req->vwv+3, 1) < state->total_data) { + state->total_data = IVAL(req->vwv+3, 1); + } + + pcnt = IVAL(req->vwv+5, 1); + poff = IVAL(req->vwv+7, 1); + pdisp = IVAL(req->vwv+9, 1); + + dcnt = IVAL(req->vwv+11, 1); + doff = IVAL(req->vwv+13, 1); + ddisp = IVAL(req->vwv+15, 1); + + state->received_param += pcnt; + state->received_data += dcnt; + + if ((state->received_data > state->total_data) || + (state->received_param > state->total_param)) + goto bad_param; + + if (pcnt) { + if (smb_buffer_oob(state->total_param, pdisp, pcnt) + || smb_buffer_oob(smb_len(req->inbuf), poff, pcnt)) { + goto bad_param; + } + memcpy(state->param+pdisp, smb_base(req->inbuf)+poff,pcnt); + } + + if (dcnt) { + if (smb_buffer_oob(state->total_data, ddisp, dcnt) + || smb_buffer_oob(smb_len(req->inbuf), doff, dcnt)) { + goto bad_param; + } + memcpy(state->data+ddisp, smb_base(req->inbuf)+doff,dcnt); + } + + if ((state->received_param < state->total_param) || + (state->received_data < state->total_data)) { + END_PROFILE(SMBnttranss); + return; + } + + handle_nttrans(conn, state, req); + + DLIST_REMOVE(conn->pending_trans, state); + SAFE_FREE(state->data); + SAFE_FREE(state->param); + TALLOC_FREE(state); + END_PROFILE(SMBnttranss); + return; + + bad_param: + + DEBUG(0,("reply_nttranss: invalid trans parameters\n")); + DLIST_REMOVE(conn->pending_trans, state); + SAFE_FREE(state->data); + SAFE_FREE(state->param); + TALLOC_FREE(state); + reply_nterror(req, NT_STATUS_INVALID_PARAMETER); + END_PROFILE(SMBnttranss); + return; +} |