/* 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 . */ #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; } DBG_DEBUG("flags = 0x%" PRIx32 ", access_mask = 0x%" PRIx32 ", file_attributes = 0x%" PRIx32 ", share_access = 0x%" PRIx32 ", create_disposition = 0x%" PRIx32 ", create_options = 0x%" PRIx32 ", root_dir_fid = 0x%" PRIx32 ", fname = %s\n", flags, access_mask, file_attributes, share_access, create_disposition, create_options, 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; } DBG_NOTICE("notify change called on %s, filter = %s, recursive = %d\n", fsp_str_dbg(fsp), notify_filter_string(talloc_tos(), filter), recursive); 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; }