/* 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 "smbd/globals.h" #include "../librpc/gen_ndr/ndr_security.h" extern const struct generic_mapping file_generic_mapping; 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. ****************************************************************************/ 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 = 3; int data_alignment_offset = 0; struct smbd_server_connection *sconn = smbd_server_conn; int max_send = sconn->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_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 (!srv_send_smb(smbd_server_fd(), (char *)req->outbuf, true, req->seqnum+1, IS_CONN_ENCRYPTED(conn), &req->pcd)) { exit_server_cleanly("send_nt_replies: srv_send_smb 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_outbuf(req, 18, total_sent_thistime + alignment_offset + data_alignment_offset); /* * We might have had SMBnttranss in req->inbuf, fix that. */ SCVAL(req->outbuf, smb_com, SMBnttrans); /* * 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 (!srv_send_smb(smbd_server_fd(), (char *)req->outbuf, true, req->seqnum+1, IS_CONN_ENCRYPTED(conn), &req->pcd)) { exit_server_cleanly("send_nt_replies: srv_send_smb 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, int *ppnum) { files_struct *fsp; NTSTATUS status; DEBUG(4,("nt_open_pipe: Opening pipe %s.\n", fname)); /* Strip \\ off the name. */ 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; int pnum = -1; char *p = NULL; uint32 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 definately * what happens on the wire.... */ reply_outbuf(req, 50, 0); SCVAL(req->outbuf,smb_wct,42); } else { reply_outbuf(req, 34, 0); } 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)); chain_reply(req); } 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; } /**************************************************************************** Reply to an NT create and X call. ****************************************************************************/ void reply_ntcreate_and_X(struct smb_request *req) { connection_struct *conn = req->conn; struct smb_filename *smb_fname = NULL; char *fname = NULL; uint32 flags; uint32 access_mask; uint32 file_attributes; uint32 share_access; uint32 create_disposition; uint32 create_options; uint16 root_dir_fid; uint64_t allocation_size; /* Breakout the oplock request bits so we can set the reply bits separately. */ uint32 fattr=0; SMB_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; struct timespec write_time_ts; NTSTATUS status; int oplock_request; uint8_t oplock_granted = NO_OPLOCK_RETURN; struct case_semantics_state *case_state = NULL; 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)IVAL(req->vwv+5, 1); allocation_size = (uint64_t)IVAL(req->vwv+9, 1); #ifdef LARGE_SMB_OFF_T allocation_size |= (((uint64_t)IVAL(req->vwv+11, 1)) << 32); #endif 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; } } status = filename_convert(ctx, conn, req->flags2 & FLAGS2_DFS_PATHNAMES, fname, 0, NULL, &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 */ root_dir_fid, /* root_dir_fid */ 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 */ allocation_size, /* allocation_size */ 0, /* private_flags */ NULL, /* sd */ NULL, /* ea_list */ &fsp, /* result */ &info); /* pinfo */ if (!NT_STATUS_IS_OK(status)) { if (open_was_deferred(req->mid)) { /* We have re-scheduled this call, no error. */ goto out; } 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; if (flags & EXTENDED_RESPONSE_REQUIRED) { /* This is very strange. We * return 50 words, but only set * the wcnt to 42 ? It's definately * what happens on the wire.... */ reply_outbuf(req, 50, 0); SCVAL(req->outbuf,smb_wct,42); } else { reply_outbuf(req, 34, 0); } 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 = dos_mode(conn, smb_fname); if (fattr == 0) { fattr = FILE_ATTRIBUTE_NORMAL; } /* Deal with other possible opens having a modified write time. JRA. */ ZERO_STRUCT(write_time_ts); get_file_infos(fsp->file_id, NULL, &write_time_ts); if (!null_timespec(write_time_ts)) { update_stat_ex_mtime(&smb_fname->st, write_time_ts); } /* 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_timespec(conn->ts_res, p, create_timespec); /* create time. */ p += 8; put_long_date_timespec(conn->ts_res, p, a_timespec); /* access time */ p += 8; put_long_date_timespec(conn->ts_res, p, m_timespec); /* write time */ p += 8; put_long_date_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); size_t num_names = 0; unsigned int num_streams; struct stream_struct *streams = NULL; /* Do we have any EA's ? */ status = get_ea_names_from_file(ctx, conn, fsp, smb_fname->base_name, NULL, &num_names); if (NT_STATUS_IS_OK(status) && num_names) { file_status &= ~NO_EAS; } status = SMB_VFS_STREAMINFO(conn, NULL, smb_fname->base_name, 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->is_directory ? 1 : 0); if (flags & EXTENDED_RESPONSE_REQUIRED) { uint32 perms = 0; p += 25; if (fsp->is_directory || can_write_to_file(conn, smb_fname)) { perms = FILE_GENERIC_ALL; } else { perms = FILE_GENERIC_READ|FILE_EXECUTE; } SIVAL(p,0,perms); } DEBUG(5,("reply_ntcreate_and_X: fnum = %d, open name = %s\n", fsp->fnum, smb_fname_str_dbg(smb_fname))); chain_reply(req); 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 **ppsetup, uint32 setup_count, char **ppparams, uint32 parameter_count, char **ppdata, uint32 data_count) { char *fname = NULL; char *params = *ppparams; int pnum = -1; char *p = NULL; NTSTATUS status; size_t param_len; uint32 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); 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; } /**************************************************************************** Internal fn to set security descriptors. ****************************************************************************/ NTSTATUS set_sd(files_struct *fsp, uint8_t *data, uint32_t sd_len, uint32_t security_info_sent) { struct security_descriptor *psd = NULL; NTSTATUS status; if (sd_len == 0 || !lp_nt_acl_support(SNUM(fsp->conn))) { return NT_STATUS_OK; } status = unmarshall_sec_desc(talloc_tos(), data, sd_len, &psd); if (!NT_STATUS_IS_OK(status)) { return status; } if (psd->owner_sid == NULL) { security_info_sent &= ~SECINFO_OWNER; } if (psd->group_sid == NULL) { security_info_sent &= ~SECINFO_GROUP; } /* Convert all the generic bits. */ security_acl_map_generic(psd->dacl, &file_generic_mapping); security_acl_map_generic(psd->sacl, &file_generic_mapping); if (DEBUGLEVEL >= 10) { DEBUG(10,("set_sd for file %s\n", fsp_str_dbg(fsp))); NDR_PRINT_DEBUG(security_descriptor, psd); } status = SMB_VFS_FSET_NT_ACL(fsp, security_info_sent, psd); TALLOC_FREE(psd); return status; } /**************************************************************************** Read a list of EA names and data from an incoming data buffer. Create an ea_list with them. ****************************************************************************/ struct ea_list *read_nttrans_ea_list(TALLOC_CTX *ctx, const char *pdata, size_t data_size) { struct ea_list *ea_list_head = NULL; size_t offset = 0; if (data_size < 4) { return NULL; } while (offset + 4 <= data_size) { size_t next_offset = IVAL(pdata,offset); struct ea_list *eal = read_ea_list_entry(ctx, pdata + offset + 4, data_size - offset - 4, NULL); if (!eal) { return NULL; } DLIST_ADD_END(ea_list_head, eal, struct ea_list *); if (next_offset == 0) { break; } offset += next_offset; } return ea_list_head; } /**************************************************************************** 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 **ppsetup, uint32 setup_count, char **ppparams, uint32 parameter_count, char **ppdata, uint32 data_count, uint32 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 fattr=0; SMB_OFF_T file_len = 0; int info = 0; files_struct *fsp = NULL; char *p = NULL; uint32 flags; uint32 access_mask; uint32 file_attributes; uint32 share_access; uint32 create_disposition; uint32 create_options; uint32 sd_len; struct security_descriptor *sd = NULL; uint32 ea_len; uint16 root_dir_fid; struct timespec create_timespec; struct timespec c_timespec; struct timespec a_timespec; struct timespec m_timespec; struct timespec write_time_ts; 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; 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)IVAL(params,4); allocation_size = (uint64_t)IVAL(params,12); #ifdef LARGE_SMB_OFF_T allocation_size |= (((uint64_t)IVAL(params,16)) << 32); #endif /* * 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; /* 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; } } 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; } } status = filename_convert(ctx, conn, req->flags2 & FLAGS2_DFS_PATHNAMES, fname, 0, NULL, &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; } 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 */ root_dir_fid, /* root_dir_fid */ 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 */ allocation_size, /* allocation_size */ 0, /* private_flags */ sd, /* sd */ ea_list, /* ea_list */ &fsp, /* result */ &info); /* pinfo */ if(!NT_STATUS_IS_OK(status)) { if (open_was_deferred(req->mid)) { /* We have re-scheduled this call, no error. */ 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 = dos_mode(conn, smb_fname); if (fattr == 0) { fattr = FILE_ATTRIBUTE_NORMAL; } /* Deal with other possible opens having a modified write time. JRA. */ ZERO_STRUCT(write_time_ts); get_file_infos(fsp->file_id, NULL, &write_time_ts); if (!null_timespec(write_time_ts)) { update_stat_ex_mtime(&smb_fname->st, write_time_ts); } /* 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_timespec(conn->ts_res, p, create_timespec); /* create time. */ p += 8; put_long_date_timespec(conn->ts_res, p, a_timespec); /* access time */ p += 8; put_long_date_timespec(conn->ts_res, p, m_timespec); /* write time */ p += 8; put_long_date_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); size_t num_names = 0; unsigned int num_streams; struct stream_struct *streams = NULL; /* Do we have any EA's ? */ status = get_ea_names_from_file(ctx, conn, fsp, smb_fname->base_name, NULL, &num_names); if (NT_STATUS_IS_OK(status) && num_names) { file_status &= ~NO_EAS; } status = SMB_VFS_STREAMINFO(conn, NULL, smb_fname->base_name, 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->is_directory ? 1 : 0); if (flags & EXTENDED_RESPONSE_REQUIRED) { uint32 perms = 0; p += 25; if (fsp->is_directory || can_write_to_file(conn, smb_fname)) { 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) { /* * Go through and cancel any pending change notifies. */ START_PROFILE(SMBntcancel); srv_cancel_sign_response(smbd_server_conn); remove_pending_change_notify_requests_by_mid(req->mid); remove_pending_lock_requests_by_mid_smb1(req->mid); DEBUG(3,("reply_ntcancel: cancel called on mid = %llu.\n", (unsigned long long)req->mid)); END_PROFILE(SMBntcancel); return; } /**************************************************************************** Copy a file. ****************************************************************************/ static NTSTATUS copy_internals(TALLOC_CTX *ctx, connection_struct *conn, struct smb_request *req, struct smb_filename *smb_fname_src, struct smb_filename *smb_fname_dst, uint32 attrs) { files_struct *fsp1,*fsp2; uint32 fattr; int info; SMB_OFF_T ret=-1; NTSTATUS status = NT_STATUS_OK; char *parent; if (!CAN_WRITE(conn)) { status = NT_STATUS_MEDIA_WRITE_PROTECTED; goto out; } /* Source must already exist. */ if (!VALID_STAT(smb_fname_src->st)) { status = NT_STATUS_OBJECT_NAME_NOT_FOUND; goto out; } /* Ensure attributes match. */ fattr = dos_mode(conn, smb_fname_src); if ((fattr & ~attrs) & (aHIDDEN | aSYSTEM)) { status = NT_STATUS_NO_SUCH_FILE; goto out; } /* Disallow if dst file already exists. */ if (VALID_STAT(smb_fname_dst->st)) { status = NT_STATUS_OBJECT_NAME_COLLISION; goto out; } /* No links from a directory. */ if (S_ISDIR(smb_fname_src->st.st_ex_mode)) { status = NT_STATUS_FILE_IS_A_DIRECTORY; goto out; } DEBUG(10,("copy_internals: doing file copy %s to %s\n", smb_fname_str_dbg(smb_fname_src), smb_fname_str_dbg(smb_fname_dst))); status = SMB_VFS_CREATE_FILE( conn, /* conn */ req, /* req */ 0, /* root_dir_fid */ smb_fname_src, /* fname */ FILE_READ_DATA, /* access_mask */ (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */ FILE_SHARE_DELETE), FILE_OPEN, /* create_disposition*/ 0, /* create_options */ FILE_ATTRIBUTE_NORMAL, /* file_attributes */ NO_OPLOCK, /* oplock_request */ 0, /* allocation_size */ 0, /* private_flags */ NULL, /* sd */ NULL, /* ea_list */ &fsp1, /* result */ &info); /* pinfo */ if (!NT_STATUS_IS_OK(status)) { goto out; } status = SMB_VFS_CREATE_FILE( conn, /* conn */ req, /* req */ 0, /* root_dir_fid */ smb_fname_dst, /* fname */ FILE_WRITE_DATA, /* access_mask */ (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */ FILE_SHARE_DELETE), FILE_CREATE, /* create_disposition*/ 0, /* create_options */ fattr, /* file_attributes */ NO_OPLOCK, /* oplock_request */ 0, /* allocation_size */ 0, /* private_flags */ NULL, /* sd */ NULL, /* ea_list */ &fsp2, /* result */ &info); /* pinfo */ if (!NT_STATUS_IS_OK(status)) { close_file(NULL, fsp1, ERROR_CLOSE); goto out; } if (smb_fname_src->st.st_ex_size) { ret = vfs_transfer_file(fsp1, fsp2, smb_fname_src->st.st_ex_size); } /* * As we are opening fsp1 read-only we only expect * an error on close on fsp2 if we are out of space. * Thus we don't look at the error return from the * close of fsp1. */ close_file(NULL, fsp1, NORMAL_CLOSE); /* Ensure the modtime is set correctly on the destination file. */ set_close_write_time(fsp2, smb_fname_src->st.st_ex_mtime); status = close_file(NULL, fsp2, NORMAL_CLOSE); /* Grrr. We have to do this as open_file_ntcreate adds aARCH when it creates the file. This isn't the correct thing to do in the copy case. JRA */ if (!parent_dirname(talloc_tos(), smb_fname_dst->base_name, &parent, NULL)) { status = NT_STATUS_NO_MEMORY; goto out; } file_set_dosmode(conn, smb_fname_dst, fattr, parent, false); TALLOC_FREE(parent); if (ret < (SMB_OFF_T)smb_fname_src->st.st_ex_size) { status = NT_STATUS_DISK_FULL; goto out; } out: if (!NT_STATUS_IS_OK(status)) { DEBUG(3,("copy_internals: Error %s copy file %s to %s\n", nt_errstr(status), smb_fname_str_dbg(smb_fname_src), smb_fname_str_dbg(smb_fname_dst))); } return status; } /**************************************************************************** Reply to a NT rename request. ****************************************************************************/ void reply_ntrename(struct smb_request *req) { connection_struct *conn = req->conn; struct smb_filename *smb_fname_old = NULL; struct smb_filename *smb_fname_new = NULL; char *oldname = NULL; char *newname = NULL; const char *p; NTSTATUS status; bool src_has_wcard = False; bool dest_has_wcard = False; uint32 attrs; uint32_t ucf_flags_src = 0; uint32_t ucf_flags_dst = 0; uint16 rename_type; TALLOC_CTX *ctx = talloc_tos(); 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_wcard(ctx, req, &oldname, p, STR_TERMINATE, &status, &src_has_wcard); if (!NT_STATUS_IS_OK(status)) { reply_nterror(req, status); goto out; } if (ms_has_wild(oldname)) { reply_nterror(req, NT_STATUS_OBJECT_PATH_SYNTAX_BAD); goto out; } p++; p += srvstr_get_path_req_wcard(ctx, req, &newname, p, STR_TERMINATE, &status, &dest_has_wcard); if (!NT_STATUS_IS_OK(status)) { reply_nterror(req, status); goto out; } /* The newname must begin with a ':' if the oldname contains a ':'. */ if (strchr_m(oldname, ':') && (newname[0] != ':')) { reply_nterror(req, NT_STATUS_INVALID_PARAMETER); goto out; } /* * If this is a rename operation, allow wildcards and save the * destination's last component. */ if (rename_type == RENAME_FLAG_RENAME) { ucf_flags_src = UCF_COND_ALLOW_WCARD_LCOMP; ucf_flags_dst = UCF_COND_ALLOW_WCARD_LCOMP | UCF_SAVE_LCOMP; } /* rename_internals() calls unix_convert(), so don't call it here. */ status = filename_convert(ctx, conn, req->flags2 & FLAGS2_DFS_PATHNAMES, oldname, ucf_flags_src, NULL, &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; } status = filename_convert(ctx, conn, req->flags2 & FLAGS2_DFS_PATHNAMES, newname, ucf_flags_dst, &dest_has_wcard, &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; } 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, smb_fname_old, smb_fname_new, attrs, False, src_has_wcard, dest_has_wcard, DELETE_ACCESS); break; case RENAME_FLAG_HARD_LINK: if (src_has_wcard || dest_has_wcard) { /* No wildcards. */ status = NT_STATUS_OBJECT_PATH_SYNTAX_BAD; } else { status = hardlink_internals(ctx, conn, req, false, smb_fname_old, smb_fname_new); } break; case RENAME_FLAG_COPY: if (src_has_wcard || dest_has_wcard) { /* No wildcards. */ status = NT_STATUS_OBJECT_PATH_SYNTAX_BAD; } else { status = copy_internals(ctx, conn, req, smb_fname_old, 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->mid)) { /* We have re-scheduled this call. */ goto out; } reply_nterror(req, status); goto out; } reply_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 **ppsetup, uint32 setup_count, char **ppparams, uint32 parameter_count, char **ppdata, uint32 data_count, uint32 max_data_count, uint32 max_param_count) { uint16 *setup = *ppsetup; files_struct *fsp; uint32 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->is_directory) || (conn != fsp->conn)) { reply_nterror(req, NT_STATUS_INVALID_PARAMETER); return; } if (fsp->notify == NULL) { status = change_notify_create(fsp, 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 (fsp->notify->num_changes != 0) { /* * We've got changes pending, respond immediately */ /* * TODO: write a torture test to check the filtering behaviour * here. */ change_notify_reply(fsp->conn, 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 **ppsetup, uint32 setup_count, char **ppparams, uint32 parameter_count, char **ppdata, uint32 data_count, uint32 max_data_count) { char *params = *ppparams; char *new_name = NULL; files_struct *fsp = NULL; bool dest_has_wcard = False; 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; } srvstr_get_path_wcard(ctx, params, req->flags2, &new_name, params+4, parameter_count - 4, STR_TERMINATE, &status, &dest_has_wcard); 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; } /****************************************************************************** Fake up a completely empty SD. *******************************************************************************/ static NTSTATUS get_null_nt_acl(TALLOC_CTX *mem_ctx, struct security_descriptor **ppsd) { size_t sd_size; *ppsd = make_standard_sec_desc( mem_ctx, &global_sid_World, &global_sid_World, NULL, &sd_size); if(!*ppsd) { DEBUG(0,("get_null_nt_acl: Unable to malloc space for security descriptor.\n")); return NT_STATUS_NO_MEMORY; } return NT_STATUS_OK; } /**************************************************************************** Reply to query a security descriptor. Callable from SMB2 and SMB2. If it returns NT_STATUS_BUFFER_TOO_SMALL, pdata_size is initialized with the required size. ****************************************************************************/ NTSTATUS smbd_do_query_security_desc(connection_struct *conn, TALLOC_CTX *mem_ctx, files_struct *fsp, uint32_t security_info_wanted, uint32_t max_data_count, uint8_t **ppmarshalled_sd, size_t *psd_size) { NTSTATUS status; struct security_descriptor *psd = NULL; /* * Get the permissions to return. */ if (!lp_nt_acl_support(SNUM(conn))) { status = get_null_nt_acl(mem_ctx, &psd); } else { status = SMB_VFS_FGET_NT_ACL( fsp, security_info_wanted, &psd); } if (!NT_STATUS_IS_OK(status)) { return status; } /* If the SACL/DACL is NULL, but was requested, we mark that it is * present in the reply to match Windows behavior */ if (psd->sacl == NULL && security_info_wanted & SECINFO_SACL) psd->type |= SEC_DESC_SACL_PRESENT; if (psd->dacl == NULL && security_info_wanted & DACL_SECURITY_INFORMATION) psd->type |= SEC_DESC_DACL_PRESENT; *psd_size = ndr_size_security_descriptor(psd, 0); DEBUG(3,("smbd_do_query_security_desc: sd_size = %lu.\n", (unsigned long)*psd_size)); if (DEBUGLEVEL >= 10) { DEBUG(10,("smbd_do_query_security_desc for file %s\n", fsp_str_dbg(fsp))); NDR_PRINT_DEBUG(security_descriptor, psd); } if (max_data_count < *psd_size) { TALLOC_FREE(psd); return NT_STATUS_BUFFER_TOO_SMALL; } status = marshall_sec_desc(mem_ctx, psd, ppmarshalled_sd, psd_size); if (!NT_STATUS_IS_OK(status)) { TALLOC_FREE(psd); return status; } TALLOC_FREE(psd); return NT_STATUS_OK; } /**************************************************************************** SMB1 reply to query a security descriptor. ****************************************************************************/ static void call_nt_transact_query_security_desc(connection_struct *conn, struct smb_request *req, uint16 **ppsetup, uint32 setup_count, char **ppparams, uint32 parameter_count, char **ppdata, uint32 data_count, uint32 max_data_count) { char *params = *ppparams; char *data = *ppdata; size_t sd_size = 0; uint32 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, 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 **ppsetup, uint32 setup_count, char **ppparams, uint32 parameter_count, char **ppdata, uint32 data_count, uint32 max_data_count) { char *params= *ppparams; char *data = *ppdata; files_struct *fsp = NULL; uint32 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(!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(fsp, (uint8 *)data, data_count, security_info_sent); 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 **ppsetup, uint32 setup_count, char **ppparams, uint32 parameter_count, char **ppdata, uint32 data_count, uint32 max_data_count) { uint32 function; uint16 fidnum; files_struct *fsp; uint8 isFSctl; uint8 compfilter; char *pdata = *ppdata; 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); /* this check is done in each implemented function case for now because I don't want to break anything... --metze FSP_BELONGS_CONN(fsp,conn);*/ SMB_PERFCOUNT_SET_IOCTL(&req->pcd, function); switch (function) { case FSCTL_SET_SPARSE: /* pretend this succeeded - tho strictly we should mark the file sparse (if the local fs supports it) so we can know if we need to pre-allocate or not */ DEBUG(10,("FSCTL_SET_SPARSE: called on FID[0x%04X](but not implemented)\n", fidnum)); send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0); return; case FSCTL_CREATE_OR_GET_OBJECT_ID: { unsigned char objid[16]; /* This should return the object-id on this file. * I think I'll make this be the inode+dev. JRA. */ DEBUG(10,("FSCTL_CREATE_OR_GET_OBJECT_ID: called on FID[0x%04X]\n",fidnum)); if (!fsp_belongs_conn(conn, req, fsp)) { return; } data_count = 64; pdata = nttrans_realloc(ppdata, data_count); if (pdata == NULL) { reply_nterror(req, NT_STATUS_NO_MEMORY); return; } /* For backwards compatibility only store the dev/inode. */ push_file_id_16(pdata, &fsp->file_id); memcpy(pdata+16,create_volume_objectid(conn,objid),16); push_file_id_16(pdata+32, &fsp->file_id); send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, pdata, data_count); return; } case FSCTL_GET_REPARSE_POINT: /* pretend this fail - my winXP does it like this * --metze */ DEBUG(10,("FSCTL_GET_REPARSE_POINT: called on FID[0x%04X](but not implemented)\n",fidnum)); reply_nterror(req, NT_STATUS_NOT_A_REPARSE_POINT); return; case FSCTL_SET_REPARSE_POINT: /* pretend this fail - I'm assuming this because of the FSCTL_GET_REPARSE_POINT case. * --metze */ DEBUG(10,("FSCTL_SET_REPARSE_POINT: called on FID[0x%04X](but not implemented)\n",fidnum)); reply_nterror(req, NT_STATUS_NOT_A_REPARSE_POINT); return; case FSCTL_GET_SHADOW_COPY_DATA: /* don't know if this name is right...*/ { /* * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots) * and return their volume names. If max_data_count is 16, then it is just * asking for the number of volumes and length of the combined names. * * pdata is the data allocated by our caller, but that uses * total_data_count (which is 0 in our case) rather than max_data_count. * Allocate the correct amount and return the pointer to let * it be deallocated when we return. */ SHADOW_COPY_DATA *shadow_data = NULL; TALLOC_CTX *shadow_mem_ctx = NULL; bool labels = False; uint32 labels_data_count = 0; uint32 i; char *cur_pdata; if (!fsp_belongs_conn(conn, req, fsp)) { return; } if (max_data_count < 16) { DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n", max_data_count)); reply_nterror(req, NT_STATUS_INVALID_PARAMETER); return; } if (max_data_count > 16) { labels = True; } shadow_mem_ctx = talloc_init("SHADOW_COPY_DATA"); if (shadow_mem_ctx == NULL) { DEBUG(0,("talloc_init(SHADOW_COPY_DATA) failed!\n")); reply_nterror(req, NT_STATUS_NO_MEMORY); return; } shadow_data = TALLOC_ZERO_P(shadow_mem_ctx,SHADOW_COPY_DATA); if (shadow_data == NULL) { DEBUG(0,("TALLOC_ZERO() failed!\n")); talloc_destroy(shadow_mem_ctx); reply_nterror(req, NT_STATUS_NO_MEMORY); return; } shadow_data->mem_ctx = shadow_mem_ctx; /* * Call the VFS routine to actually do the work. */ if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) { talloc_destroy(shadow_data->mem_ctx); if (errno == ENOSYS) { DEBUG(5,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, not supported.\n", conn->connectpath)); reply_nterror(req, NT_STATUS_NOT_SUPPORTED); return; } else { DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: connectpath %s, failed.\n", conn->connectpath)); reply_nterror(req, NT_STATUS_UNSUCCESSFUL); return; } } labels_data_count = (shadow_data->num_volumes*2*sizeof(SHADOW_COPY_LABEL))+2; if (!labels) { data_count = 16; } else { data_count = 12+labels_data_count+4; } if (max_data_countmem_ctx); reply_nterror(req, NT_STATUS_BUFFER_TOO_SMALL); return; } pdata = nttrans_realloc(ppdata, data_count); if (pdata == NULL) { talloc_destroy(shadow_data->mem_ctx); reply_nterror(req, NT_STATUS_NO_MEMORY); return; } cur_pdata = pdata; /* num_volumes 4 bytes */ SIVAL(pdata,0,shadow_data->num_volumes); if (labels) { /* num_labels 4 bytes */ SIVAL(pdata,4,shadow_data->num_volumes); } /* needed_data_count 4 bytes */ SIVAL(pdata, 8, labels_data_count+4); cur_pdata+=12; DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n", shadow_data->num_volumes, fsp_str_dbg(fsp))); if (labels && shadow_data->labels) { for (i=0;inum_volumes;i++) { srvstr_push(pdata, req->flags2, cur_pdata, shadow_data->labels[i], 2*sizeof(SHADOW_COPY_LABEL), STR_UNICODE|STR_TERMINATE); cur_pdata+=2*sizeof(SHADOW_COPY_LABEL); DEBUGADD(10,("Label[%u]: '%s'\n",i,shadow_data->labels[i])); } } talloc_destroy(shadow_data->mem_ctx); send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, pdata, data_count); return; } case FSCTL_FIND_FILES_BY_SID: /* I hope this name is right */ { /* pretend this succeeded - * * we have to send back a list with all files owned by this SID * * but I have to check that --metze */ struct dom_sid sid; uid_t uid; size_t sid_len = MIN(data_count-4,SID_MAX_SIZE); DEBUG(10,("FSCTL_FIND_FILES_BY_SID: called on FID[0x%04X]\n",fidnum)); if (!fsp_belongs_conn(conn, req, fsp)) { return; } /* unknown 4 bytes: this is not the length of the sid :-( */ /*unknown = IVAL(pdata,0);*/ sid_parse(pdata+4,sid_len,&sid); DEBUGADD(10, ("for SID: %s\n", sid_string_dbg(&sid))); if (!sid_to_uid(&sid, &uid)) { DEBUG(0,("sid_to_uid: failed, sid[%s] sid_len[%lu]\n", sid_string_dbg(&sid), (unsigned long)sid_len)); uid = (-1); } /* we can take a look at the find source :-) * * find ./ -uid $uid -name '*' is what we need here * * * and send 4bytes len and then NULL terminated unicode strings * for each file * * but I don't know how to deal with the paged results * (maybe we can hang the result anywhere in the fsp struct) * * we don't send all files at once * and at the next we should *not* start from the beginning, * so we have to cache the result * * --metze */ /* this works for now... */ send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0); return; } case FSCTL_QUERY_ALLOCATED_RANGES: { /* FIXME: This is just a dummy reply, telling that all of the * file is allocated. MKS cp needs that. * Adding the real allocated ranges via FIEMAP on Linux * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make * this FSCTL correct for sparse files. */ NTSTATUS status; uint64_t offset, length; if (!fsp_belongs_conn(conn, req, fsp)) { return; } if (data_count != 16) { DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n", data_count)); reply_nterror(req, NT_STATUS_INVALID_PARAMETER); return; } if (max_data_count < 16) { DEBUG(0,("FSCTL_QUERY_ALLOCATED_RANGES: max_data_count(%u) < 16 is invalid!\n", max_data_count)); reply_nterror(req, NT_STATUS_INVALID_PARAMETER); return; } offset = BVAL(pdata,0); length = BVAL(pdata,8); if (offset + length < offset) { /* No 64-bit integer wrap. */ reply_nterror(req, NT_STATUS_INVALID_PARAMETER); return; } status = vfs_stat_fsp(fsp); if (!NT_STATUS_IS_OK(status)) { reply_nterror(req, status); return; } if (offset > fsp->fsp_name->st.st_ex_size || fsp->fsp_name->st.st_ex_size == 0 || length == 0) { send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0); } else { uint64_t end = offset + length; end = MIN(end, fsp->fsp_name->st.st_ex_size); SBVAL(pdata,0,0); SBVAL(pdata,8,end); send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, pdata, 16); } return; } default: if (!logged_ioctl_message) { logged_ioctl_message = true; /* Only print this once... */ DEBUG(0,("call_nt_transact_ioctl(0x%x): Currently not implemented.\n", function)); } } reply_nterror(req, NT_STATUS_NOT_SUPPORTED); } #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 **ppsetup, uint32 setup_count, char **ppparams, uint32 parameter_count, char **ppdata, uint32 data_count, uint32 max_data_count) { NTSTATUS nt_status = NT_STATUS_OK; char *params = *ppparams; char *pdata = *ppdata; char *entry; int data_len=0,param_len=0; int qt_len=0; int entry_len = 0; files_struct *fsp = NULL; uint16 level = 0; size_t sid_len; struct dom_sid sid; bool start_enum = True; SMB_NTQUOTA_STRUCT qt; SMB_NTQUOTA_LIST *tmp_list; SMB_NTQUOTA_HANDLE *qt_handle = NULL; ZERO_STRUCT(qt); /* access check */ if (conn->server_info->utok.uid != 0) { DEBUG(1,("get_user_quota: access_denied service [%s] user " "[%s]\n", lp_servicename(SNUM(conn)), conn->server_info->unix_name)); reply_nterror(req, NT_STATUS_ACCESS_DENIED); return; } /* * Ensure minimum number of parameters sent. */ if (parameter_count < 4) { DEBUG(0,("TRANSACT_GET_USER_QUOTA: requires %d >= 4 bytes parameters\n",parameter_count)); reply_nterror(req, NT_STATUS_INVALID_PARAMETER); return; } /* 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")); reply_nterror(req, NT_STATUS_INVALID_HANDLE); return; } /* the NULL pointer checking for fsp->fake_file_handle->pd * is done by CHECK_NTQUOTA_HANDLE_OK() */ qt_handle = (SMB_NTQUOTA_HANDLE *)fsp->fake_file_handle->private_data; level = SVAL(params,2); /* unknown 12 bytes leading in params */ switch (level) { case TRANSACT_GET_USER_QUOTA_LIST_CONTINUE: /* seems that we should continue with the enum here --metze */ if (qt_handle->quota_list!=NULL && qt_handle->tmp_list==NULL) { /* free the list */ free_ntquota_list(&(qt_handle->quota_list)); /* Realloc the size of parameters and data we will return */ param_len = 4; params = nttrans_realloc(ppparams, param_len); if(params == NULL) { reply_nterror(req, NT_STATUS_NO_MEMORY); return; } data_len = 0; SIVAL(params,0,data_len); break; } start_enum = False; case TRANSACT_GET_USER_QUOTA_LIST_START: if (qt_handle->quota_list==NULL && qt_handle->tmp_list==NULL) { start_enum = True; } if (start_enum && vfs_get_user_ntquota_list(fsp,&(qt_handle->quota_list))!=0) { reply_nterror(req, NT_STATUS_INTERNAL_ERROR); return; } /* Realloc the size of parameters and data we will return */ param_len = 4; params = nttrans_realloc(ppparams, param_len); if(params == NULL) { reply_nterror(req, NT_STATUS_NO_MEMORY); return; } /* we should not trust the value in max_data_count*/ max_data_count = MIN(max_data_count,2048); pdata = nttrans_realloc(ppdata, max_data_count);/* should be max data count from client*/ if(pdata == NULL) { reply_nterror(req, NT_STATUS_NO_MEMORY); return; } entry = pdata; /* set params Size of returned Quota Data 4 bytes*/ /* but set it later when we know it */ /* for each entry push the data */ if (start_enum) { qt_handle->tmp_list = qt_handle->quota_list; } tmp_list = qt_handle->tmp_list; for (;((tmp_list!=NULL)&&((qt_len +40+SID_MAX_SIZE)next,entry+=entry_len,qt_len+=entry_len) { sid_len = ndr_size_dom_sid( &tmp_list->quotas->sid, 0); entry_len = 40 + sid_len; /* nextoffset entry 4 bytes */ SIVAL(entry,0,entry_len); /* then the len of the SID 4 bytes */ SIVAL(entry,4,sid_len); /* unknown data 8 bytes uint64_t */ SBIG_UINT(entry,8,(uint64_t)0); /* this is not 0 in windows...-metze*/ /* the used disk space 8 bytes uint64_t */ SBIG_UINT(entry,16,tmp_list->quotas->usedspace); /* the soft quotas 8 bytes uint64_t */ SBIG_UINT(entry,24,tmp_list->quotas->softlim); /* the hard quotas 8 bytes uint64_t */ SBIG_UINT(entry,32,tmp_list->quotas->hardlim); /* and now the SID */ sid_linearize(entry+40, sid_len, &tmp_list->quotas->sid); } qt_handle->tmp_list = tmp_list; /* overwrite the offset of the last entry */ SIVAL(entry-entry_len,0,0); data_len = 4+qt_len; /* overwrite the params quota_data_len */ SIVAL(params,0,data_len); break; case TRANSACT_GET_USER_QUOTA_FOR_SID: /* unknown 4 bytes IVAL(pdata,0) */ if (data_count < 8) { DEBUG(0,("TRANSACT_GET_USER_QUOTA_FOR_SID: requires %d >= %d bytes data\n",data_count,8)); reply_nterror(req, NT_STATUS_INVALID_LEVEL); return; } sid_len = IVAL(pdata,4); /* Ensure this is less than 1mb. */ if (sid_len > (1024*1024)) { reply_nterror(req, NT_STATUS_NO_MEMORY); return; } if (data_count < 8+sid_len) { DEBUG(0,("TRANSACT_GET_USER_QUOTA_FOR_SID: requires %d >= %lu bytes data\n",data_count,(unsigned long)(8+sid_len))); reply_nterror(req, NT_STATUS_INVALID_LEVEL); return; } data_len = 4+40+sid_len; if (max_data_count < data_len) { DEBUG(0,("TRANSACT_GET_USER_QUOTA_FOR_SID: max_data_count(%d) < data_len(%d)\n", max_data_count, data_len)); param_len = 4; SIVAL(params,0,data_len); data_len = 0; nt_status = NT_STATUS_BUFFER_TOO_SMALL; break; } sid_parse(pdata+8,sid_len,&sid); if (vfs_get_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &qt)!=0) { ZERO_STRUCT(qt); /* * we have to return zero's in all fields * instead of returning an error here * --metze */ } /* Realloc the size of parameters and data we will return */ param_len = 4; params = nttrans_realloc(ppparams, param_len); if(params == NULL) { reply_nterror(req, NT_STATUS_NO_MEMORY); return; } pdata = nttrans_realloc(ppdata, data_len); if(pdata == NULL) { reply_nterror(req, NT_STATUS_NO_MEMORY); return; } entry = pdata; /* set params Size of returned Quota Data 4 bytes*/ SIVAL(params,0,data_len); /* nextoffset entry 4 bytes */ SIVAL(entry,0,0); /* then the len of the SID 4 bytes */ SIVAL(entry,4,sid_len); /* unknown data 8 bytes uint64_t */ SBIG_UINT(entry,8,(uint64_t)0); /* this is not 0 in windows...-mezte*/ /* the used disk space 8 bytes uint64_t */ SBIG_UINT(entry,16,qt.usedspace); /* the soft quotas 8 bytes uint64_t */ SBIG_UINT(entry,24,qt.softlim); /* the hard quotas 8 bytes uint64_t */ SBIG_UINT(entry,32,qt.hardlim); /* and now the SID */ sid_linearize(entry+40, sid_len, &sid); break; default: DEBUG(0,("do_nt_transact_get_user_quota: fnum %d unknown level 0x%04hX\n",fsp->fnum,level)); reply_nterror(req, NT_STATUS_INVALID_LEVEL); return; break; } send_nt_replies(conn, req, nt_status, params, param_len, pdata, data_len); } /**************************************************************************** Reply to set user quota ****************************************************************************/ static void call_nt_transact_set_user_quota(connection_struct *conn, struct smb_request *req, uint16 **ppsetup, uint32 setup_count, char **ppparams, uint32 parameter_count, char **ppdata, uint32 data_count, uint32 max_data_count) { char *params = *ppparams; char *pdata = *ppdata; int data_len=0,param_len=0; SMB_NTQUOTA_STRUCT qt; size_t sid_len; struct dom_sid sid; files_struct *fsp = NULL; ZERO_STRUCT(qt); /* access check */ if (conn->server_info->utok.uid != 0) { DEBUG(1,("set_user_quota: access_denied service [%s] user " "[%s]\n", lp_servicename(SNUM(conn)), conn->server_info->unix_name)); reply_nterror(req, NT_STATUS_ACCESS_DENIED); return; } /* * Ensure minimum number of parameters sent. */ if (parameter_count < 2) { DEBUG(0,("TRANSACT_SET_USER_QUOTA: requires %d >= 2 bytes parameters\n",parameter_count)); reply_nterror(req, NT_STATUS_INVALID_PARAMETER); return; } /* 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")); reply_nterror(req, NT_STATUS_INVALID_HANDLE); return; } if (data_count < 40) { DEBUG(0,("TRANSACT_SET_USER_QUOTA: requires %d >= %d bytes data\n",data_count,40)); reply_nterror(req, NT_STATUS_INVALID_LEVEL); return; } /* offset to next quota record. * 4 bytes IVAL(pdata,0) * unused here... */ /* sid len */ sid_len = IVAL(pdata,4); if (data_count < 40+sid_len) { DEBUG(0,("TRANSACT_SET_USER_QUOTA: requires %d >= %lu bytes data\n",data_count,(unsigned long)40+sid_len)); reply_nterror(req, NT_STATUS_INVALID_LEVEL); return; } /* unknown 8 bytes in pdata * maybe its the change time in NTTIME */ /* the used space 8 bytes (uint64_t)*/ qt.usedspace = (uint64_t)IVAL(pdata,16); #ifdef LARGE_SMB_OFF_T qt.usedspace |= (((uint64_t)IVAL(pdata,20)) << 32); #else /* LARGE_SMB_OFF_T */ if ((IVAL(pdata,20) != 0)&& ((qt.usedspace != 0xFFFFFFFF)|| (IVAL(pdata,20)!=0xFFFFFFFF))) { /* more than 32 bits? */ reply_nterror(req, NT_STATUS_INVALID_LEVEL); return; } #endif /* LARGE_SMB_OFF_T */ /* the soft quotas 8 bytes (uint64_t)*/ qt.softlim = (uint64_t)IVAL(pdata,24); #ifdef LARGE_SMB_OFF_T qt.softlim |= (((uint64_t)IVAL(pdata,28)) << 32); #else /* LARGE_SMB_OFF_T */ if ((IVAL(pdata,28) != 0)&& ((qt.softlim != 0xFFFFFFFF)|| (IVAL(pdata,28)!=0xFFFFFFFF))) { /* more than 32 bits? */ reply_nterror(req, NT_STATUS_INVALID_LEVEL); return; } #endif /* LARGE_SMB_OFF_T */ /* the hard quotas 8 bytes (uint64_t)*/ qt.hardlim = (uint64_t)IVAL(pdata,32); #ifdef LARGE_SMB_OFF_T qt.hardlim |= (((uint64_t)IVAL(pdata,36)) << 32); #else /* LARGE_SMB_OFF_T */ if ((IVAL(pdata,36) != 0)&& ((qt.hardlim != 0xFFFFFFFF)|| (IVAL(pdata,36)!=0xFFFFFFFF))) { /* more than 32 bits? */ reply_nterror(req, NT_STATUS_INVALID_LEVEL); return; } #endif /* LARGE_SMB_OFF_T */ sid_parse(pdata+40,sid_len,&sid); DEBUGADD(8,("SID: %s\n", sid_string_dbg(&sid))); /* 44 unknown bytes left... */ if (vfs_set_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &qt)!=0) { reply_nterror(req, NT_STATUS_INTERNAL_ERROR); return; } send_nt_replies(conn, req, NT_STATUS_OK, params, param_len, pdata, data_len); } #endif /* HAVE_SYS_QUOTAS */ static void handle_nttrans(connection_struct *conn, struct trans_state *state, struct smb_request *req) { if (get_Protocol() >= PROTOCOL_NT1) { req->flags2 |= 0x40; /* IS_LONG_NAME */ SSVAL(req->inbuf,smb_flg2,req->flags2); } SMB_PERFCOUNT_SET_SUBOP(&req->pcd, state->call); /* 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 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_P(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 (trans_oob(state->total_data, 0, dscnt) || trans_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 (trans_oob(state->total_param, 0, pscnt) || trans_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_smb_request already. */ if ((state->setup_count/2) + 19 > (unsigned int)req->wct) { goto bad_param; } state->setup = (uint16 *)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 *)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_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((char *)req->inbuf); 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 (trans_oob(state->total_param, pdisp, pcnt) || trans_oob(smb_len(req->inbuf), poff, pcnt)) { goto bad_param; } memcpy(state->param+pdisp, smb_base(req->inbuf)+poff,pcnt); } if (dcnt) { if (trans_oob(state->total_data, ddisp, dcnt) || trans_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; }