/* Unix SMB/Netbios implementation. Version 1.9. SMB NT transaction handling Copyright (C) Jeremy Allison 1994-1998 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "includes.h" #include "nterr.h" extern int DEBUGLEVEL; extern int Protocol; extern int Client; extern int smb_read_error; extern int global_oplock_break; extern BOOL case_sensitive; extern BOOL case_preserve; extern BOOL short_case_preserve; static void remove_pending_change_notify_requests_by_mid(int mid); static char *known_nt_pipes[] = { "\\LANMAN", "\\srvsvc", "\\samr", "\\wkssvc", "\\NETLOGON", "\\ntlsa", "\\ntsvcs", "\\lsass", "\\lsarpc", "\\winreg", NULL }; /**************************************************************************** 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 int send_nt_replies(char *inbuf, char *outbuf, int bufsize, uint32 nt_error, char *params, int paramsize, char *pdata, int datasize) { extern int max_send; 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; /* * Initially set the wcnt area to be 18 - this is true for all * transNT replies. */ set_message(outbuf,18,0,True); if(nt_error != 0) { /* NT Error. */ SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2) | FLAGS2_32_BIT_ERROR_CODES); ERROR(0,nt_error); } /* * If there genuinely are no parameters or data to send just send * the empty packet. */ if(params_to_send == 0 && data_to_send == 0) { send_smb(Client,outbuf); return 0; } /* * 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 = bufsize - ((smb_buf(outbuf)+ alignment_offset+data_alignment_offset) - outbuf); /* * useable_space can never be more than max_send minus the * alignment offset. */ useable_space = MIN(useable_space, max_send - (alignment_offset+data_alignment_offset)); 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 + alignment_offset + data_alignment_offset; /* * We can never send more than useable_space. */ total_sent_thistime = MIN(total_sent_thistime, useable_space); set_message(outbuf, 18, total_sent_thistime, True); /* * Set total params and data to be sent. */ SIVAL(outbuf,smb_ntr_TotalParameterCount,paramsize); SIVAL(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(outbuf,smb_ntr_ParameterCount,params_sent_thistime); if(params_sent_thistime == 0) { SIVAL(outbuf,smb_ntr_ParameterOffset,0); SIVAL(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(outbuf,smb_ntr_ParameterOffset, ((smb_buf(outbuf)+alignment_offset) - smb_base(outbuf))); /* * Absolute displacement of param bytes sent in this packet. */ SIVAL(outbuf,smb_ntr_ParameterDisplacement,pp - params); } /* * Deal with the data portion. */ SIVAL(outbuf,smb_ntr_DataCount, data_sent_thistime); if(data_sent_thistime == 0) { SIVAL(outbuf,smb_ntr_DataOffset,0); SIVAL(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(outbuf,smb_ntr_DataOffset,((smb_buf(outbuf)+alignment_offset) - smb_base(outbuf)) + params_sent_thistime + data_alignment_offset); SIVAL(outbuf,smb_ntr_DataDisplacement, pd - pdata); } /* * Copy the param bytes into the packet. */ if(params_sent_thistime) memcpy((smb_buf(outbuf)+alignment_offset),pp,params_sent_thistime); /* * Copy in the data bytes */ if(data_sent_thistime) memcpy(smb_buf(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)); /* Send the packet */ send_smb(Client,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)); return -1; } } return 0; } /**************************************************************************** (Hopefully) temporary call to fix bugs in NT5.0beta2. This OS sends unicode strings in NT calls AND DOESN'T SET THE UNICODE BIT !!!!!!! ****************************************************************************/ static void get_filename( char *fname, char *inbuf, int data_offset, int data_len, int fname_len) { /* * We need various heuristics here to detect a unicode string... JRA. */ DEBUG(10,("get_filename: data_offset = %d, data_len = %d, fname_len = %d\n", data_offset, data_len, fname_len )); if(data_len - fname_len > 1) { /* * NT 5.0 Beta 2 has kindly sent us a UNICODE string * without bothering to set the unicode bit. How kind. * * Firstly - ensure that the data offset is aligned * on a 2 byte boundary - add one if not. */ fname_len = fname_len/2; if(data_offset & 1) data_offset++; pstrcpy(fname, dos_unistrn2((uint16 *)(inbuf+data_offset), fname_len)); } else { StrnCpy(fname,inbuf+data_offset,fname_len); fname[fname_len] = '\0'; } } /**************************************************************************** Fix bugs in Win2000 final release. In trans calls this OS sends unicode strings AND DOESN'T SET THE UNICODE BIT !!!!!!! ****************************************************************************/ static void get_filename_transact( char *fname, char *inbuf, int data_offset, int data_len, int fname_len) { /* * We need various heuristics here to detect a unicode string... JRA. */ DEBUG(10,("get_filename_transact: data_offset = %d, data_len = %d, fname_len = %d\n", data_offset, data_len, fname_len )); /* * Win2K sends a unicode filename plus one extra alingment byte. * WinNT4.x send an ascii string with multiple garbage bytes on * the end here. */ if((data_len - fname_len == 1) || (inbuf[data_offset] == '\0')) { /* * Ensure that the data offset is aligned * on a 2 byte boundary - add one if not. */ fname_len = fname_len/2; if(data_offset & 1) data_offset++; pstrcpy(fname, dos_unistrn2((uint16 *)(inbuf+data_offset), fname_len)); } else { StrnCpy(fname,inbuf+data_offset,fname_len); fname[fname_len] = '\0'; } } /**************************************************************************** Save case statics. ****************************************************************************/ static BOOL saved_case_sensitive; static BOOL saved_case_preserve; static BOOL saved_short_case_preserve; /**************************************************************************** Save case semantics. ****************************************************************************/ static void set_posix_case_semantics(uint32 file_attributes) { if(!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) return; saved_case_sensitive = case_sensitive; saved_case_preserve = case_preserve; saved_short_case_preserve = short_case_preserve; /* Set to POSIX. */ case_sensitive = True; case_preserve = True; short_case_preserve = True; } /**************************************************************************** Restore case semantics. ****************************************************************************/ static void restore_case_semantics(uint32 file_attributes) { if(!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) return; case_sensitive = saved_case_sensitive; case_preserve = saved_case_preserve; short_case_preserve = saved_short_case_preserve; } /**************************************************************************** Utility function to map create disposition. ****************************************************************************/ static int map_create_disposition( uint32 create_disposition) { int ret; switch( create_disposition ) { case FILE_CREATE: /* create if not exist, fail if exist */ ret = (FILE_CREATE_IF_NOT_EXIST|FILE_EXISTS_FAIL); break; case FILE_SUPERSEDE: case FILE_OVERWRITE_IF: /* create if not exist, trunc if exist */ ret = (FILE_CREATE_IF_NOT_EXIST|FILE_EXISTS_TRUNCATE); break; case FILE_OPEN: /* fail if not exist, open if exists */ ret = (FILE_FAIL_IF_NOT_EXIST|FILE_EXISTS_OPEN); break; case FILE_OPEN_IF: /* create if not exist, open if exists */ ret = (FILE_CREATE_IF_NOT_EXIST|FILE_EXISTS_OPEN); break; case FILE_OVERWRITE: /* fail if not exist, truncate if exists */ ret = (FILE_FAIL_IF_NOT_EXIST|FILE_EXISTS_TRUNCATE); break; default: DEBUG(0,("map_create_disposition: Incorrect value for create_disposition = %d\n", create_disposition )); return -1; } DEBUG(10,("map_create_disposition: Mapped create_disposition %lx to %x\n", (unsigned long)create_disposition, ret )); return ret; } /**************************************************************************** Utility function to map share modes. ****************************************************************************/ static int map_share_mode( BOOL *pstat_open_only, char *fname, uint32 desired_access, uint32 share_access, uint32 file_attributes) { int smb_open_mode = -1; *pstat_open_only = False; switch( desired_access & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA) ) { case FILE_READ_DATA: smb_open_mode = DOS_OPEN_RDONLY; break; case FILE_WRITE_DATA: case FILE_APPEND_DATA: case FILE_WRITE_DATA|FILE_APPEND_DATA: smb_open_mode = DOS_OPEN_WRONLY; break; case FILE_READ_DATA|FILE_WRITE_DATA: case FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA: case FILE_READ_DATA|FILE_APPEND_DATA: smb_open_mode = DOS_OPEN_RDWR; break; } /* * NB. For DELETE_ACCESS we should really check the * directory permissions, as that is what controls * delete, and for WRITE_DAC_ACCESS we should really * check the ownership, as that is what controls the * chmod. Note that this is *NOT* a security hole (this * note is for you, Andrew) as we are not *allowing* * the access at this point, the actual unlink or * chown or chmod call would do this. We are just helping * clients out by telling them if they have a hope * of any of this succeeding. POSIX acls may still * deny the real call. JRA. */ if (smb_open_mode == -1) { if(desired_access == WRITE_DAC_ACCESS || desired_access == READ_CONTROL_ACCESS) *pstat_open_only = True; if(desired_access & (DELETE_ACCESS|WRITE_DAC_ACCESS|WRITE_OWNER_ACCESS| FILE_EXECUTE|FILE_READ_ATTRIBUTES| FILE_READ_EA|FILE_WRITE_EA|SYSTEM_SECURITY_ACCESS| FILE_WRITE_ATTRIBUTES|READ_CONTROL_ACCESS)) smb_open_mode = DOS_OPEN_RDONLY; else { DEBUG(0,("map_share_mode: Incorrect value %lx for desired_access to file %s\n", (unsigned long)desired_access, fname)); return -1; } } /* * Set the special bit that means allow share delete. * This is held outside the normal share mode bits at 1<<15. * JRA. */ if(share_access & FILE_SHARE_DELETE) smb_open_mode |= ALLOW_SHARE_DELETE; /* Add in the requested share mode. */ switch( share_access & (FILE_SHARE_READ|FILE_SHARE_WRITE)) { case FILE_SHARE_READ: smb_open_mode |= SET_DENY_MODE(DENY_WRITE); break; case FILE_SHARE_WRITE: smb_open_mode |= SET_DENY_MODE(DENY_READ); break; case (FILE_SHARE_READ|FILE_SHARE_WRITE): smb_open_mode |= SET_DENY_MODE(DENY_NONE); break; case FILE_SHARE_NONE: smb_open_mode |= SET_DENY_MODE(DENY_ALL); break; } /* * Handle an O_SYNC request. */ if(file_attributes & FILE_FLAG_WRITE_THROUGH) smb_open_mode |= FILE_SYNC_OPENMODE; DEBUG(10,("map_share_mode: Mapped desired access %lx, share access %lx, file attributes %lx \ to open_mode %x\n", (unsigned long)desired_access, (unsigned long)share_access, (unsigned long)file_attributes, smb_open_mode )); return smb_open_mode; } /* * This is a *disgusting* hack. * This is *so* bad that even I'm embarrassed (and I * have no shame). Here's the deal : * Until we get the correct SPOOLSS code into smbd * then when we're running with NT SMB support then * NT makes this call with a level of zero, and then * immediately follows it with an open request to * the \\SRVSVC pipe. If we allow that open to * succeed then NT barfs when it cannot open the * \\SPOOLSS pipe immediately after and continually * whines saying "Printer name is invalid" forever * after. If we cause *JUST THIS NEXT OPEN* of \\SRVSVC * to fail, then NT downgrades to using the downlevel code * and everything works as well as before. I hate * myself for adding this code.... JRA. * * The HACK_FAIL_TIME define allows only a 2 * second window for this to occur, just in * case... */ static BOOL fail_next_srvsvc = False; static time_t fail_time; #define HACK_FAIL_TIME 2 /* In seconds. */ void fail_next_srvsvc_open(void) { /* Check client is WinNT proper; Win2K doesn't like Jeremy's hack - matty */ if (get_remote_arch() != RA_WINNT) return; fail_next_srvsvc = True; fail_time = time(NULL); DEBUG(10,("fail_next_srvsvc_open: setting up timeout close of \\srvsvc pipe for print fix.\n")); } /* * HACK alert.... see above - JRA. */ BOOL should_fail_next_srvsvc_open(const char *pipename) { DEBUG(10,("should_fail_next_srvsvc_open: fail = %d, pipe = %s\n", (int)fail_next_srvsvc, pipename)); if(fail_next_srvsvc && (time(NULL) > fail_time + HACK_FAIL_TIME)) { fail_next_srvsvc = False; fail_time = (time_t)0; DEBUG(10,("should_fail_next_srvsvc_open: End of timeout close of \\srvsvc pipe for print fix.\n")); } if(fail_next_srvsvc && strequal(pipename, "srvsvc")) { fail_next_srvsvc = False; DEBUG(10,("should_fail_next_srvsvc_open: Deliberately failing open of \\srvsvc pipe for print fix.\n")); return True; } return False; } /**************************************************************************** Reply to an NT create and X call on a pipe. ****************************************************************************/ static int nt_open_pipe(char *fname, connection_struct *conn, char *inbuf, char *outbuf, int *ppnum) { pipes_struct *p = NULL; uint16 vuid = SVAL(inbuf, smb_uid); int i; DEBUG(4,("nt_open_pipe: Opening pipe %s.\n", fname)); /* See if it is one we want to handle. */ for( i = 0; known_nt_pipes[i]; i++ ) if( strequal(fname,known_nt_pipes[i])) break; if ( known_nt_pipes[i] == NULL ) return(ERROR(ERRSRV,ERRaccess)); /* Strip \\ off the name. */ fname++; if(should_fail_next_srvsvc_open(fname)) return (ERROR(ERRSRV,ERRaccess)); DEBUG(3,("nt_open_pipe: Known pipe %s opening.\n", fname)); p = open_rpc_pipe_p(fname, conn, vuid); if (!p) return(ERROR(ERRSRV,ERRnofids)); *ppnum = p->pnum; return 0; } /**************************************************************************** Reply to an NT create and X call. ****************************************************************************/ int reply_ntcreate_and_X(connection_struct *conn, char *inbuf,char *outbuf,int length,int bufsize) { pstring fname; uint32 flags = IVAL(inbuf,smb_ntcreate_Flags); uint32 desired_access = IVAL(inbuf,smb_ntcreate_DesiredAccess); uint32 file_attributes = IVAL(inbuf,smb_ntcreate_FileAttributes); uint32 share_access = IVAL(inbuf,smb_ntcreate_ShareAccess); uint32 create_disposition = IVAL(inbuf,smb_ntcreate_CreateDisposition); uint32 create_options = IVAL(inbuf,smb_ntcreate_CreateOptions); uint32 fname_len = MIN(((uint32)SVAL(inbuf,smb_ntcreate_NameLength)), ((uint32)sizeof(fname)-1)); uint16 root_dir_fid = (uint16)IVAL(inbuf,smb_ntcreate_RootDirectoryFid); int smb_ofun; int smb_open_mode; int smb_attr = (file_attributes & SAMBA_ATTRIBUTES_MASK); /* Breakout the oplock request bits so we can set the reply bits separately. */ int oplock_request = 0; mode_t unixmode; int pnum = -1; int fmode=0,rmode=0; SMB_OFF_T file_len = 0; SMB_STRUCT_STAT sbuf; int smb_action = 0; BOOL bad_path = False; files_struct *fsp=NULL; char *p = NULL; BOOL stat_open_only = False; /* * We need to construct the open_and_X ofun value from the * NT values, as that's what our code is structured to accept. */ if((smb_ofun = map_create_disposition( create_disposition )) == -1) return(ERROR(ERRDOS,ERRbadaccess)); /* * Get the file name. */ if(root_dir_fid != 0) { /* * This filename is relative to a directory fid. */ files_struct *dir_fsp = file_fsp(inbuf,smb_ntcreate_RootDirectoryFid); size_t dir_name_len; if(!dir_fsp) return(ERROR(ERRDOS,ERRbadfid)); if(!dir_fsp->is_directory) { /* * Check to see if this is a mac fork of some kind. */ get_filename(&fname[0], inbuf, smb_buf(inbuf)-inbuf, smb_buflen(inbuf),fname_len); if( fname[0] == ':') { SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES); return(ERROR(0, 0xc0000000|NT_STATUS_OBJECT_PATH_NOT_FOUND)); } return(ERROR(ERRDOS,ERRbadfid)); } /* * Copy in the base directory name. */ pstrcpy( fname, dir_fsp->fsp_name ); dir_name_len = strlen(fname); /* * Ensure it ends in a '\'. */ if(fname[dir_name_len-1] != '\\' && fname[dir_name_len-1] != '/') { pstrcat(fname, "\\"); dir_name_len++; } /* * This next calculation can refuse a correct filename if we're dealing * with the Win2k unicode bug, but that would be rare. JRA. */ if(fname_len + dir_name_len >= sizeof(pstring)) return(ERROR(ERRSRV,ERRfilespecs)); get_filename(&fname[dir_name_len], inbuf, smb_buf(inbuf)-inbuf, smb_buflen(inbuf),fname_len); } else { get_filename(fname, inbuf, smb_buf(inbuf)-inbuf, smb_buflen(inbuf),fname_len); } /* If it's an IPC, use the pipe handler. */ if (IS_IPC(conn) && lp_nt_pipe_support()) { int ret = nt_open_pipe(fname, conn, inbuf, outbuf, &pnum); if(ret != 0) return ret; /* * Deal with pipe return. */ set_message(outbuf,34,0,True); p = 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); /* ? */ DEBUG(5,("reply_ntcreate_and_X: open pipe = %s\n", fname)); return chain_reply(inbuf,outbuf,length,bufsize); } /* * Now contruct the smb_open_mode value from the filename, * desired access and the share access. */ if((smb_open_mode = map_share_mode(&stat_open_only, fname, desired_access, share_access, file_attributes)) == -1) return(ERROR(ERRDOS,ERRbadaccess)); oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0; oplock_request |= (flags & REQUEST_BATCH_OPLOCK) ? BATCH_OPLOCK : 0; /* * Ordinary file or directory. */ /* * Check if POSIX semantics are wanted. */ set_posix_case_semantics(file_attributes); unix_convert(fname,conn,0,&bad_path,NULL); fsp = file_new(); if (!fsp) { restore_case_semantics(file_attributes); return(ERROR(ERRSRV,ERRnofids)); } if (!check_name(fname,conn)) { if((errno == ENOENT) && bad_path) { unix_ERR_class = ERRDOS; unix_ERR_code = ERRbadpath; } file_free(fsp); restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } unixmode = unix_mode(conn,smb_attr | aARCH, fname); /* * If it's a request for a directory open, deal with it separately. */ if(create_options & FILE_DIRECTORY_FILE) { oplock_request = 0; open_directory(fsp, conn, fname, smb_ofun, unixmode, &smb_action); restore_case_semantics(file_attributes); if(!fsp->open) { file_free(fsp); return(UNIXERROR(ERRDOS,ERRnoaccess)); } } else { /* * Ordinary file case. */ /* NB. We have a potential bug here. If we * cause an oplock break to ourselves, then we * could end up processing filename related * SMB requests whilst we await the oplock * break response. As we may have changed the * filename case semantics to be POSIX-like, * this could mean a filename request could * fail when it should succeed. This is a rare * condition, but eventually we must arrange * to restore the correct case semantics * before issuing an oplock break request to * our client. JRA. */ open_file_shared(fsp,conn,fname,smb_open_mode, smb_ofun,unixmode, oplock_request,&rmode,&smb_action); if (!fsp->open) { /* We cheat here. There are two cases we * care about. One is a directory rename, * where the NT client will attempt to * open the source directory for * DELETE access. Note that when the * NT client does this it does *not* * set the directory bit in the * request packet. This is translated * into a read/write open * request. POSIX states that any open * for write request on a directory * will generate an EISDIR error, so * we can catch this here and open a * pseudo handle that is flagged as a * directory. The second is an open * for a permissions read only, which * we handle in the open_file_stat case. JRA. */ if(errno == EISDIR) { /* * Fail the open if it was explicitly a non-directory file. */ if (create_options & FILE_NON_DIRECTORY_FILE) { file_free(fsp); restore_case_semantics(file_attributes); SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES); return(ERROR(0, 0xc0000000|NT_STATUS_FILE_IS_A_DIRECTORY)); } oplock_request = 0; open_directory(fsp, conn, fname, smb_ofun, unixmode, &smb_action); if(!fsp->open) { file_free(fsp); restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } #ifdef EROFS } else if (((errno == EACCES) || (errno == EROFS)) && stat_open_only) { #else /* !EROFS */ } else if (errno == EACCES && stat_open_only) { #endif /* * We couldn't open normally and all we want * are the permissions. Try and do a stat open. */ oplock_request = 0; open_file_stat(fsp,conn,fname,smb_open_mode,&sbuf,&smb_action); if(!fsp->open) { file_free(fsp); restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } } else { if((errno == ENOENT) && bad_path) { unix_ERR_class = ERRDOS; unix_ERR_code = ERRbadpath; } file_free(fsp); restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } } } if(fsp->is_directory) { if(dos_stat(fsp->fsp_name, &sbuf) != 0) { close_file(fsp,True); restore_case_semantics(file_attributes); return(ERROR(ERRDOS,ERRnoaccess)); } } else { if (!fsp->stat_open && sys_fstat(fsp->fd_ptr->fd,&sbuf) != 0) { close_file(fsp,False); restore_case_semantics(file_attributes); return(ERROR(ERRDOS,ERRnoaccess)); } } restore_case_semantics(file_attributes); file_len = sbuf.st_size; fmode = dos_mode(conn,fname,&sbuf); if(fmode == 0) fmode = FILE_ATTRIBUTE_NORMAL; if (!fsp->is_directory && (fmode & aDIR)) { close_file(fsp,False); return(ERROR(ERRDOS,ERRnoaccess)); } /* * 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))) smb_action |= EXTENDED_OPLOCK_GRANTED; if(oplock_request && EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) smb_action |= EXTENDED_OPLOCK_GRANTED; set_message(outbuf,34,0,True); p = outbuf + smb_vwv2; /* * Currently as we don't support level II oplocks we just report * exclusive & batch here. */ if (smb_action & EXTENDED_OPLOCK_GRANTED) SCVAL(p,0, BATCH_OPLOCK_RETURN); else if (LEVEL_II_OPLOCK_TYPE(fsp->oplock_type)) SCVAL(p,0, LEVEL_II_OPLOCK_RETURN); else SCVAL(p,0,NO_OPLOCK_RETURN); p++; SSVAL(p,0,fsp->fnum); p += 2; SIVAL(p,0,smb_action); p += 4; /* Create time. */ put_long_date(p,get_create_time(&sbuf,lp_fake_dir_create_times(SNUM(conn)))); p += 8; put_long_date(p,sbuf.st_atime); /* access time */ p += 8; put_long_date(p,sbuf.st_mtime); /* write time */ p += 8; put_long_date(p,sbuf.st_mtime); /* change time */ p += 8; SIVAL(p,0,fmode); /* File Attributes. */ p += 4; SOFF_T(p, 0, file_len); p += 8; SOFF_T(p,0,file_len); p += 12; SCVAL(p,0,fsp->is_directory ? 1 : 0); DEBUG(5,("reply_ntcreate_and_X: fnum = %d, open name = %s\n", fsp->fnum, fsp->fsp_name)); return chain_reply(inbuf,outbuf,length,bufsize); } /**************************************************************************** Reply to a NT_TRANSACT_CREATE call (needs to process SD's). ****************************************************************************/ static int call_nt_transact_create(connection_struct *conn, char *inbuf, char *outbuf, int length, int bufsize, char **ppsetup, char **ppparams, char **ppdata) { pstring fname; char *params = *ppparams; int total_parameter_count = (int)IVAL(inbuf, smb_nt_TotalParameterCount); /* Breakout the oplock request bits so we can set the reply bits separately. */ int oplock_request = 0; mode_t unixmode; int pnum = -1; int fmode=0,rmode=0; SMB_OFF_T file_len = 0; SMB_STRUCT_STAT sbuf; int smb_action = 0; BOOL bad_path = False; files_struct *fsp = NULL; char *p = NULL; BOOL stat_open_only = False; uint32 flags; uint32 desired_access; uint32 file_attributes; uint32 share_access; uint32 create_disposition; uint32 create_options; uint32 fname_len; uint16 root_dir_fid; int smb_ofun; int smb_open_mode; int smb_attr; DEBUG(5,("call_nt_transact_create\n")); /* * Ensure minimum number of parameters sent. */ if(total_parameter_count < 54) { DEBUG(0,("call_nt_transact_create - insufficient parameters (%u)\n", (unsigned int)total_parameter_count)); return(ERROR(ERRDOS,ERRbadaccess)); } flags = IVAL(params,0); desired_access = IVAL(params,8); file_attributes = IVAL(params,20); share_access = IVAL(params,24); create_disposition = IVAL(params,28); create_options = IVAL(params,32); fname_len = MIN(((uint32)IVAL(params,44)),((uint32)sizeof(fname)-1)); root_dir_fid = (uint16)IVAL(params,4); smb_attr = (file_attributes & SAMBA_ATTRIBUTES_MASK); /* * We need to construct the open_and_X ofun value from the * NT values, as that's what our code is structured to accept. */ if((smb_ofun = map_create_disposition( create_disposition )) == -1) return(ERROR(ERRDOS,ERRbadmem)); /* * Get the file name. */ if(root_dir_fid != 0) { /* * This filename is relative to a directory fid. */ files_struct *dir_fsp = file_fsp(params,4); size_t dir_name_len; if(!dir_fsp) return(ERROR(ERRDOS,ERRbadfid)); if(!dir_fsp->is_directory) { /* * Check to see if this is a mac fork of some kind. */ get_filename_transact(&fname[0], params, 53, total_parameter_count - 53 - fname_len, fname_len); if( fname[0] == ':') { SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES); return(ERROR(0, 0xc0000000|NT_STATUS_OBJECT_PATH_NOT_FOUND)); } return(ERROR(ERRDOS,ERRbadfid)); } /* * Copy in the base directory name. */ pstrcpy( fname, dir_fsp->fsp_name ); dir_name_len = strlen(fname); /* * Ensure it ends in a '\'. */ if((fname[dir_name_len-1] != '\\') && (fname[dir_name_len-1] != '/')) { pstrcat(fname, "\\"); dir_name_len++; } /* * This next calculation can refuse a correct filename if we're dealing * with the Win2k unicode bug, but that would be rare. JRA. */ if(fname_len + dir_name_len >= sizeof(pstring)) return(ERROR(ERRSRV,ERRfilespecs)); get_filename_transact(&fname[dir_name_len], params, 53, total_parameter_count - 53 - fname_len, fname_len); } else { get_filename_transact(&fname[0], params, 53, total_parameter_count - 53 - fname_len, fname_len); } /* If it's an IPC, use the pipe handler. */ if (IS_IPC(conn)) { int ret = nt_open_pipe(fname, conn, inbuf, outbuf, &pnum); if(ret != 0) return ret; smb_action = FILE_WAS_OPENED; } else { /* * Now contruct the smb_open_mode value from the desired access * and the share access. */ if((smb_open_mode = map_share_mode( &stat_open_only, fname, desired_access, share_access, file_attributes)) == -1) return(ERROR(ERRDOS,ERRbadaccess)); oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0; oplock_request |= (flags & REQUEST_BATCH_OPLOCK) ? BATCH_OPLOCK : 0; /* * Check if POSIX semantics are wanted. */ set_posix_case_semantics(file_attributes); unix_convert(fname,conn,0,&bad_path,NULL); fsp = file_new(); if (!fsp) { restore_case_semantics(file_attributes); return(ERROR(ERRSRV,ERRnofids)); } if (!check_name(fname,conn)) { if((errno == ENOENT) && bad_path) { unix_ERR_class = ERRDOS; unix_ERR_code = ERRbadpath; } file_free(fsp); restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } unixmode = unix_mode(conn,smb_attr | aARCH, fname); /* * If it's a request for a directory open, deal with it separately. */ if(create_options & FILE_DIRECTORY_FILE) { oplock_request = 0; /* * We will get a create directory here if the Win32 * app specified a security descriptor in the * CreateDirectory() call. */ open_directory(fsp, conn, fname, smb_ofun, unixmode, &smb_action); if(!fsp->open) { file_free(fsp); restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } if(dos_stat(fsp->fsp_name, &sbuf) != 0) { close_file(fsp,True); restore_case_semantics(file_attributes); return(ERROR(ERRDOS,ERRnoaccess)); } } else { /* * Ordinary file case. */ open_file_shared(fsp,conn,fname,smb_open_mode,smb_ofun,unixmode, oplock_request,&rmode,&smb_action); if (!fsp->open) { if(errno == EISDIR) { /* * Fail the open if it was explicitly a non-directory file. */ if (create_options & FILE_NON_DIRECTORY_FILE) { file_free(fsp); restore_case_semantics(file_attributes); SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES); return(ERROR(0, 0xc0000000|NT_STATUS_FILE_IS_A_DIRECTORY)); } oplock_request = 0; open_directory(fsp, conn, fname, smb_ofun, unixmode, &smb_action); if(!fsp->open) { file_free(fsp); restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } #ifdef EROFS } else if (((errno == EACCES) || (errno == EROFS)) && stat_open_only) { #else /* !EROFS */ } else if (errno == EACCES && stat_open_only) { #endif /* * We couldn't open normally and all we want * are the permissions. Try and do a stat open. */ oplock_request = 0; open_file_stat(fsp,conn,fname,smb_open_mode,&sbuf,&smb_action); if(!fsp->open) { file_free(fsp); restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } } else { if((errno == ENOENT) && bad_path) { unix_ERR_class = ERRDOS; unix_ERR_code = ERRbadpath; } file_free(fsp); restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } } if(fsp->is_directory) { if(dos_stat(fsp->fsp_name, &sbuf) != 0) { close_file(fsp,True); restore_case_semantics(file_attributes); return(ERROR(ERRDOS,ERRnoaccess)); } } else { if (!fsp->stat_open && sys_fstat(fsp->fd_ptr->fd,&sbuf) != 0) { close_file(fsp,False); restore_case_semantics(file_attributes); return(ERROR(ERRDOS,ERRnoaccess)); } } file_len = sbuf.st_size; fmode = dos_mode(conn,fname,&sbuf); if(fmode == 0) fmode = FILE_ATTRIBUTE_NORMAL; if (fmode & aDIR) { close_file(fsp,False); restore_case_semantics(file_attributes); return(ERROR(ERRDOS,ERRnoaccess)); } /* * 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))) smb_action |= EXTENDED_OPLOCK_GRANTED; if(oplock_request && EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) smb_action |= EXTENDED_OPLOCK_GRANTED; } } restore_case_semantics(file_attributes); /* Realloc the size of parameters and data we will return */ params = *ppparams = Realloc(*ppparams, 69); if(params == NULL) return(ERROR(ERRDOS,ERRnomem)); memset((char *)params,'\0',69); p = params; if (smb_action & EXTENDED_OPLOCK_GRANTED) SCVAL(p,0, BATCH_OPLOCK_RETURN); else if (LEVEL_II_OPLOCK_TYPE(fsp->oplock_type)) SCVAL(p,0, LEVEL_II_OPLOCK_RETURN); else SCVAL(p,0,NO_OPLOCK_RETURN); p += 2; if (IS_IPC(conn)) { SSVAL(p,0,pnum); } else { SSVAL(p,0,fsp->fnum); } p += 2; SIVAL(p,0,smb_action); p += 8; if (IS_IPC(conn)) { /* * Deal with pipe return. */ 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); /* ? */ } else { /* * Deal with file return. */ /* Create time. */ put_long_date(p,get_create_time(&sbuf,lp_fake_dir_create_times(SNUM(conn)))); p += 8; put_long_date(p,sbuf.st_atime); /* access time */ p += 8; put_long_date(p,sbuf.st_mtime); /* write time */ p += 8; put_long_date(p,sbuf.st_mtime); /* change time */ p += 8; SIVAL(p,0,fmode); /* File Attributes. */ p += 4; SOFF_T(p,0,file_len); p += 8; SOFF_T(p,0,file_len); } DEBUG(5,("call_nt_transact_create: open name = %s\n", fname)); /* Send the required number of replies */ send_nt_replies(inbuf, outbuf, bufsize, 0, params, 69, *ppdata, 0); return -1; } /**************************************************************************** Reply to a NT CANCEL request. ****************************************************************************/ int reply_ntcancel(connection_struct *conn, char *inbuf,char *outbuf,int length,int bufsize) { /* * Go through and cancel any pending change notifies. */ int mid = SVAL(inbuf,smb_mid); remove_pending_change_notify_requests_by_mid(mid); remove_pending_lock_requests_by_mid(mid); DEBUG(3,("reply_ntcancel: cancel called on mid = %d.\n", mid)); return(-1); } /**************************************************************************** Reply to an unsolicited SMBNTtranss - just ignore it! ****************************************************************************/ int reply_nttranss(connection_struct *conn, char *inbuf,char *outbuf,int length,int bufsize) { DEBUG(4,("Ignoring nttranss of length %d\n",length)); return(-1); } /**************************************************************************** Reply to an NT transact rename command. ****************************************************************************/ static int call_nt_transact_rename(connection_struct *conn, char *inbuf, char *outbuf, int length, int bufsize, char **ppsetup, char **ppparams, char **ppdata) { char *params = *ppparams; pstring new_name; files_struct *fsp = file_fsp(params, 0); BOOL replace_if_exists = (SVAL(params,2) & RENAME_REPLACE_IF_EXISTS) ? True : False; uint32 fname_len = MIN((((uint32)IVAL(inbuf,smb_nt_TotalParameterCount)-4)), ((uint32)sizeof(new_name)-1)); int outsize = 0; CHECK_FSP(fsp, conn); StrnCpy(new_name,params+4,fname_len); new_name[fname_len] = '\0'; outsize = rename_internals(conn, inbuf, outbuf, fsp->fsp_name, new_name, replace_if_exists); if(outsize == 0) { /* * Rename was successful. */ send_nt_replies(inbuf, outbuf, bufsize, 0, NULL, 0, NULL, 0); DEBUG(3,("nt transact rename from = %s, to = %s succeeded.\n", fsp->fsp_name, new_name)); outsize = -1; } return(outsize); } /**************************************************************************** This is the structure to keep the information needed to determine if a directory has changed. *****************************************************************************/ typedef struct { time_t modify_time; /* Info from the directory we're monitoring. */ time_t status_time; /* Info from the directory we're monitoring. */ time_t total_time; /* Total time of all directory entries - don't care if it wraps. */ unsigned int num_entries; /* Zero or the number of files in the directory. */ } change_hash_data; /**************************************************************************** This is the structure to queue to implement NT change notify. It consists of smb_size bytes stored from the transact command (to keep the mid, tid etc around). Plus the fid to examine and the time to check next. *****************************************************************************/ typedef struct { ubi_slNode msg_next; files_struct *fsp; connection_struct *conn; uint32 flags; time_t next_check_time; change_hash_data change_data; char request_buf[smb_size]; } change_notify_buf; static ubi_slList change_notify_queue = { NULL, (ubi_slNodePtr)&change_notify_queue, 0}; /**************************************************************************** Setup the common parts of the return packet and send it. *****************************************************************************/ static void change_notify_reply_packet(char *inbuf, int error_class, uint32 error_code) { extern int Client; char outbuf[smb_size+38]; memset(outbuf, '\0', sizeof(outbuf)); construct_reply_common(inbuf, outbuf); /* * If we're returning a 'too much in the directory changed' we need to * set this is an NT error status flags. If we don't then the (probably * untested) code in the NT redirector has a bug in that it doesn't re-issue * the change notify.... Ah - I *love* it when I get so deeply into this I * can even determine how MS failed to test stuff and why.... :-). JRA. */ if(error_class == 0) /* NT Error. */ SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2) | FLAGS2_32_BIT_ERROR_CODES); ERROR(error_class,error_code); /* * Seems NT needs a transact command with an error code * in it. This is a longer packet than a simple error. */ set_message(outbuf,18,0,False); send_smb(Client,outbuf); } /**************************************************************************** Create the hash we will use to determine if the contents changed. *****************************************************************************/ static BOOL create_directory_notify_hash( change_notify_buf *cnbp, change_hash_data *change_data) { SMB_STRUCT_STAT st; files_struct *fsp = cnbp->fsp; memset((char *)change_data, '\0', sizeof(change_data)); /* * Store the current timestamp on the directory we are monitoring. */ if(dos_stat(fsp->fsp_name, &st) < 0) { DEBUG(0,("create_directory_notify_hash: Unable to stat name = %s. \ Error was %s\n", fsp->fsp_name, strerror(errno) )); return False; } change_data->modify_time = st.st_mtime; change_data->status_time = st.st_ctime; /* * If we are to watch for changes that are only stored * in inodes of files, not in the directory inode, we must * scan the directory and produce a unique identifier with * which we can determine if anything changed. We use the * modify and change times from all the files in the * directory, added together (ignoring wrapping if it's * larger than the max time_t value). */ if(cnbp->flags & (FILE_NOTIFY_CHANGE_SIZE|FILE_NOTIFY_CHANGE_LAST_WRITE)) { pstring full_name; char *p; char *fname; size_t remaining_len; size_t fullname_len; void *dp = OpenDir(cnbp->conn, fsp->fsp_name, True); if(dp == NULL) { DEBUG(0,("create_directory_notify_hash: Unable to open directory = %s. \ Error was %s\n", fsp->fsp_name, strerror(errno) )); return False; } change_data->num_entries = 0; pstrcpy(full_name, fsp->fsp_name); pstrcat(full_name, "/"); fullname_len = strlen(full_name); remaining_len = sizeof(full_name) - fullname_len - 1; p = &full_name[fullname_len]; while ((fname = ReadDirName(dp))) { if(strequal(fname, ".") || strequal(fname, "..")) continue; change_data->num_entries++; safe_strcpy( p, fname, remaining_len); memset(&st, '\0', sizeof(st)); /* * Do the stat - but ignore errors. */ if(dos_stat(full_name, &st) < 0) { DEBUG(5,("create_directory_notify_hash: Unable to stat content file = %s. \ Error was %s\n", fsp->fsp_name, strerror(errno) )); } change_data->total_time += (st.st_mtime + st.st_ctime); } CloseDir(dp); } return True; } /**************************************************************************** Delete entries by fnum from the change notify pending queue. *****************************************************************************/ void remove_pending_change_notify_requests_by_fid(files_struct *fsp) { change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue ); change_notify_buf *prev = NULL; while(cnbp != NULL) { if(cnbp->fsp->fnum == fsp->fnum) { free((char *)ubi_slRemNext( &change_notify_queue, prev)); cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue)); continue; } prev = cnbp; cnbp = (change_notify_buf *)ubi_slNext(cnbp); } } /**************************************************************************** Delete entries by mid from the change notify pending queue. Always send reply. *****************************************************************************/ static void remove_pending_change_notify_requests_by_mid(int mid) { change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue ); change_notify_buf *prev = NULL; while(cnbp != NULL) { if(SVAL(cnbp->request_buf,smb_mid) == mid) { change_notify_reply_packet(cnbp->request_buf,0,0xC0000000 |NT_STATUS_CANCELLED); free((char *)ubi_slRemNext( &change_notify_queue, prev)); cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue)); continue; } prev = cnbp; cnbp = (change_notify_buf *)ubi_slNext(cnbp); } } /**************************************************************************** Delete entries by filename and cnum from the change notify pending queue. Always send reply. *****************************************************************************/ void remove_pending_change_notify_requests_by_filename(files_struct *fsp) { change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue ); change_notify_buf *prev = NULL; while(cnbp != NULL) { /* * We know it refers to the same directory if the connection number and * the filename are identical. */ if((cnbp->fsp->conn == fsp->conn) && strequal(cnbp->fsp->fsp_name,fsp->fsp_name)) { change_notify_reply_packet(cnbp->request_buf,0,0xC0000000 |NT_STATUS_CANCELLED); free((char *)ubi_slRemNext( &change_notify_queue, prev)); cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue)); continue; } prev = cnbp; cnbp = (change_notify_buf *)ubi_slNext(cnbp); } } /**************************************************************************** Process the change notify queue. Note that this is only called as root. Returns True if there are still outstanding change notify requests on the queue. *****************************************************************************/ BOOL process_pending_change_notify_queue(time_t t) { change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue ); change_notify_buf *prev = NULL; if(cnbp == NULL) return False; if(cnbp->next_check_time >= t) return True; /* * It's time to check. Go through the queue and see if * the timestamps changed. */ while((cnbp != NULL) && (cnbp->next_check_time <= t)) { change_hash_data change_data; connection_struct *conn = cnbp->conn; uint16 vuid = (lp_security() == SEC_SHARE) ? UID_FIELD_INVALID : SVAL(cnbp->request_buf,smb_uid); ZERO_STRUCT(change_data); /* * Ensure we don't have any old chain_fsp values * sitting around.... */ chain_size = 0; file_chain_reset(); if(!become_user(conn,vuid)) { DEBUG(0,("process_pending_change_notify_queue: Unable to become user vuid=%d.\n", vuid )); /* * Remove the entry and return an error to the client. */ change_notify_reply_packet(cnbp->request_buf,ERRSRV,ERRaccess); free((char *)ubi_slRemNext( &change_notify_queue, prev)); cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue)); continue; } if(!become_service(conn,True)) { DEBUG(0,("process_pending_change_notify_queue: Unable to become service Error was %s.\n", strerror(errno) )); /* * Remove the entry and return an error to the client. */ change_notify_reply_packet(cnbp->request_buf,ERRSRV,ERRaccess); free((char *)ubi_slRemNext( &change_notify_queue, prev)); cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue)); unbecome_user(); continue; } if(!create_directory_notify_hash( cnbp, &change_data)) { DEBUG(0,("process_pending_change_notify_queue: Unable to create change data for \ directory %s\n", cnbp->fsp->fsp_name )); /* * Remove the entry and return an error to the client. */ change_notify_reply_packet(cnbp->request_buf,ERRSRV,ERRaccess); free((char *)ubi_slRemNext( &change_notify_queue, prev)); cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue)); unbecome_user(); continue; } if(memcmp( (char *)&cnbp->change_data, (char *)&change_data, sizeof(change_data))) { /* * Remove the entry and return a change notify to the client. */ DEBUG(5,("process_pending_change_notify_queue: directory name = %s changed.\n", cnbp->fsp->fsp_name )); change_notify_reply_packet(cnbp->request_buf,0,NT_STATUS_NOTIFY_ENUM_DIR); free((char *)ubi_slRemNext( &change_notify_queue, prev)); cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue)); unbecome_user(); continue; } unbecome_user(); /* * Move to the next in the list. */ prev = cnbp; cnbp = (change_notify_buf *)ubi_slNext(cnbp); } return (cnbp != NULL); } /**************************************************************************** Return true if there are pending change notifies. ****************************************************************************/ BOOL change_notifies_pending(void) { change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue ); return (cnbp != NULL); } /**************************************************************************** Reply to a notify change - queue the request and don't allow a directory to be opened. ****************************************************************************/ static int call_nt_transact_notify_change(connection_struct *conn, char *inbuf, char *outbuf, int length, int bufsize, char **ppsetup, char **ppparams, char **ppdata) { char *setup = *ppsetup; files_struct *fsp; change_notify_buf *cnbp; fsp = file_fsp(setup,4); DEBUG(3,("call_nt_transact_notify_change\n")); if(!fsp) return(ERROR(ERRDOS,ERRbadfid)); if((!fsp->open) || (!fsp->is_directory) || (conn != fsp->conn)) return(ERROR(ERRDOS,ERRbadfid)); /* * Now queue an entry on the notify change stack. We timestamp * the entry we are adding so that we know when to scan next. * We only need to save smb_size bytes from this incoming packet * as we will always by returning a 'read the directory yourself' * error. */ if((cnbp = (change_notify_buf *)malloc(sizeof(change_notify_buf))) == NULL) { DEBUG(0,("call_nt_transact_notify_change: malloc fail !\n" )); return -1; } memset((char *)cnbp, '\0', sizeof(change_notify_buf)); memcpy(cnbp->request_buf, inbuf, smb_size); cnbp->fsp = fsp; cnbp->conn = conn; cnbp->next_check_time = time(NULL) + lp_change_notify_timeout(); cnbp->flags = IVAL(setup, 0); if(!create_directory_notify_hash( cnbp, &cnbp->change_data )) { free((char *)cnbp); return(UNIXERROR(ERRDOS,ERRbadfid)); } /* * Adding to the tail enables us to check only * the head when scanning for change, as this entry * is forced to have the first timeout expiration. */ ubi_slAddTail(&change_notify_queue, cnbp); DEBUG(3,("call_nt_transact_notify_change: notify change called on directory \ name = %s\n", fsp->fsp_name )); return -1; } /**************************************************************************** Map unix perms to NT. ****************************************************************************/ static SEC_ACCESS map_unix_perms( int *pacl_type, mode_t perm, int r_mask, int w_mask, int x_mask, BOOL is_directory) { SEC_ACCESS sa; uint32 nt_mask = 0; *pacl_type = SEC_ACE_TYPE_ACCESS_ALLOWED; if((perm & (r_mask|w_mask|x_mask)) == (r_mask|w_mask|x_mask)) { nt_mask = UNIX_ACCESS_RWX; } else if((perm & (r_mask|w_mask|x_mask)) == 0) { nt_mask = UNIX_ACCESS_NONE; } else { nt_mask |= (perm & r_mask) ? UNIX_ACCESS_R : 0; if(is_directory) nt_mask |= (perm & w_mask) ? UNIX_ACCESS_W : 0; else nt_mask |= (perm & w_mask) ? UNIX_ACCESS_W : 0; nt_mask |= (perm & x_mask) ? UNIX_ACCESS_X : 0; } init_sec_access(&sa,nt_mask); return sa; } /**************************************************************************** Function to create owner and group SIDs from a SMB_STRUCT_STAT. ****************************************************************************/ static void create_file_sids(SMB_STRUCT_STAT *psbuf, DOM_SID *powner_sid, DOM_SID *pgroup_sid) { extern DOM_SID global_sam_sid; sid_copy(powner_sid, &global_sam_sid); sid_copy(pgroup_sid, &global_sam_sid); sid_append_rid(powner_sid, pdb_uid_to_user_rid(psbuf->st_uid)); sid_append_rid(pgroup_sid, pdb_gid_to_group_rid(psbuf->st_gid)); } /**************************************************************************** Reply to query a security descriptor from an fsp. If it succeeds it allocates the space for the return elements and returns True. ****************************************************************************/ static size_t get_nt_acl(files_struct *fsp, SEC_DESC **ppdesc) { extern DOM_SID global_sid_World; SMB_STRUCT_STAT sbuf; SEC_ACE ace_list[6]; DOM_SID owner_sid; DOM_SID group_sid; size_t sec_desc_size; SEC_ACL *psa = NULL; SEC_ACCESS owner_access; int owner_acl_type; SEC_ACCESS group_access; int grp_acl_type; SEC_ACCESS other_access; int other_acl_type; int num_acls = 0; *ppdesc = NULL; if(!lp_nt_acl_support()) { sid_copy( &owner_sid, &global_sid_World); sid_copy( &group_sid, &global_sid_World); } else { if(fsp->is_directory || fsp->fd_ptr == NULL) { if(dos_stat(fsp->fsp_name, &sbuf) != 0) { return 0; } } else { if(sys_fstat(fsp->fd_ptr->fd,&sbuf) != 0) { return 0; } } /* * Get the owner, group and world SIDs. */ create_file_sids(&sbuf, &owner_sid, &group_sid); /* * Create the generic 3 element UNIX acl. */ owner_access = map_unix_perms(&owner_acl_type, sbuf.st_mode, S_IRUSR, S_IWUSR, S_IXUSR, fsp->is_directory); group_access = map_unix_perms(&grp_acl_type, sbuf.st_mode, S_IRGRP, S_IWGRP, S_IXGRP, fsp->is_directory); other_access = map_unix_perms(&other_acl_type, sbuf.st_mode, S_IROTH, S_IWOTH, S_IXOTH, fsp->is_directory); if(owner_access.mask) init_sec_ace(&ace_list[num_acls++], &owner_sid, owner_acl_type, owner_access, 0); if(group_access.mask) init_sec_ace(&ace_list[num_acls++], &group_sid, grp_acl_type, group_access, 0); if(other_access.mask) init_sec_ace(&ace_list[num_acls++], &global_sid_World, other_acl_type, other_access, 0); if(fsp->is_directory) { /* * For directory ACLs we also add in the inherited permissions * ACE entries. These are the permissions a file would get when * being created in the directory. */ mode_t mode = unix_mode( fsp->conn, FILE_ATTRIBUTE_ARCHIVE, fsp->fsp_name); owner_access = map_unix_perms(&owner_acl_type, mode, S_IRUSR, S_IWUSR, S_IXUSR, fsp->is_directory); group_access = map_unix_perms(&grp_acl_type, mode, S_IRGRP, S_IWGRP, S_IXGRP, fsp->is_directory); other_access = map_unix_perms(&other_acl_type, mode, S_IROTH, S_IWOTH, S_IXOTH, fsp->is_directory); if(owner_access.mask) init_sec_ace(&ace_list[num_acls++], &owner_sid, owner_acl_type, owner_access, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY); if(group_access.mask) init_sec_ace(&ace_list[num_acls++], &group_sid, grp_acl_type, group_access, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY); if(other_access.mask) init_sec_ace(&ace_list[num_acls++], &global_sid_World, other_acl_type, other_access, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY); } if(num_acls) if((psa = make_sec_acl( 3, num_acls, ace_list)) == NULL) { DEBUG(0,("get_nt_acl: Unable to malloc space for acl.\n")); return 0; } } *ppdesc = make_standard_sec_desc( &owner_sid, &group_sid, psa, &sec_desc_size); if(!*ppdesc) { DEBUG(0,("get_nt_acl: Unable to malloc space for security descriptor.\n")); sec_desc_size = 0; } free_sec_acl(&psa); return sec_desc_size; } /**************************************************************************** Reply to query a security descriptor - currently this is not implemented (it is planned to be though). Right now it just returns the same thing NT would when queried on a FAT filesystem. JRA. ****************************************************************************/ static int call_nt_transact_query_security_desc(connection_struct *conn, char *inbuf, char *outbuf, int length, int bufsize, char **ppsetup, char **ppparams, char **ppdata) { uint32 max_data_count = IVAL(inbuf,smb_nt_MaxDataCount); char *params = *ppparams; char *data = *ppdata; prs_struct pd; SEC_DESC *psd; size_t sec_desc_size; files_struct *fsp = file_fsp(params,0); if(!fsp) return(ERROR(ERRDOS,ERRbadfid)); DEBUG(3,("call_nt_transact_query_security_desc: file = %s\n", fsp->fsp_name )); params = *ppparams = Realloc(*ppparams, 4); if(params == NULL) return(ERROR(ERRDOS,ERRnomem)); /* * Get the permissions to return. */ if((sec_desc_size = get_nt_acl(fsp, &psd)) == 0) return(UNIXERROR(ERRDOS,ERRnoaccess)); DEBUG(3,("call_nt_transact_query_security_desc: sec_desc_size = %d.\n",(int)sec_desc_size)); SIVAL(params,0,(uint32)sec_desc_size); if(max_data_count < sec_desc_size) { free_sec_desc(&psd); send_nt_replies(inbuf, outbuf, bufsize, 0xC0000000|NT_STATUS_BUFFER_TOO_SMALL, params, 4, *ppdata, 0); return -1; } /* * Allocate the data we will point this at. */ data = *ppdata = Realloc(*ppdata, sec_desc_size); if(data == NULL) { free_sec_desc(&psd); return(ERROR(ERRDOS,ERRnomem)); } memset(data, '\0', sec_desc_size); /* * Init the parse struct we will marshall into. */ prs_init(&pd, 0, 4, MARSHALL); /* * Setup the prs_struct to point at the memory we just * allocated. */ prs_give_memory( &pd, data, (uint32)sec_desc_size, False); /* * Finally, linearize into the outgoing buffer. */ if(!sec_io_desc( "sd data", &psd, &pd, 1)) { free_sec_desc(&psd); DEBUG(0,("call_nt_transact_query_security_desc: Error in marshalling \ security descriptor.\n")); /* * Return access denied for want of a better error message.. */ return(UNIXERROR(ERRDOS,ERRnoaccess)); } /* * Now we can delete the security descriptor. */ free_sec_desc(&psd); send_nt_replies(inbuf, outbuf, bufsize, 0, params, 4, data, (int)sec_desc_size); return -1; } /**************************************************************************** Validate a SID. ****************************************************************************/ static BOOL validate_unix_sid( DOM_SID *psid, uint32 *prid, DOM_SID *sd_sid) { extern DOM_SID global_sam_sid; DOM_SID sid; if(!sd_sid) { DEBUG(5,("validate_unix_sid: sid missing.\n")); return False; } sid_copy(psid, sd_sid); sid_copy(&sid, sd_sid); if(!sid_split_rid(&sid, prid)) { DEBUG(5,("validate_unix_sid: cannot get RID from sid.\n")); return False; } if(!sid_equal( &sid, &global_sam_sid)) { DEBUG(5,("validate_unix_sid: sid is not ours.\n")); return False; } return True; } /**************************************************************************** Map NT perms to UNIX. ****************************************************************************/ #define FILE_SPECIFIC_READ_BITS (FILE_READ_DATA|FILE_READ_EA|FILE_READ_ATTRIBUTES) #define FILE_SPECIFIC_WRITE_BITS (FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_WRITE_EA|FILE_WRITE_ATTRIBUTES) #define FILE_SPECIFIC_EXECUTE_BITS (FILE_EXECUTE) static mode_t map_nt_perms( SEC_ACCESS sec_access, int type) { mode_t mode = 0; switch(type) { case S_IRUSR: if(sec_access.mask & GENERIC_ALL_ACCESS) mode = S_IRUSR|S_IWUSR|S_IXUSR; else { mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IRUSR : 0; mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWUSR : 0; mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXUSR : 0; } break; case S_IRGRP: if(sec_access.mask & GENERIC_ALL_ACCESS) mode = S_IRGRP|S_IWGRP|S_IXGRP; else { mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IRGRP : 0; mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWGRP : 0; mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXGRP : 0; } break; case S_IROTH: if(sec_access.mask & GENERIC_ALL_ACCESS) mode = S_IROTH|S_IWOTH|S_IXOTH; else { mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IROTH : 0; mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWOTH : 0; mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXOTH : 0; } break; } return mode; } /**************************************************************************** Unpack a SEC_DESC into a owner, group and set of UNIX permissions. ****************************************************************************/ static BOOL unpack_nt_permissions(SMB_STRUCT_STAT *psbuf, uid_t *puser, gid_t *pgrp, mode_t *pmode, uint32 security_info_sent, SEC_DESC *psd, BOOL is_directory) { extern DOM_SID global_sid_World; DOM_SID owner_sid; DOM_SID grp_sid; DOM_SID file_owner_sid; DOM_SID file_grp_sid; uint32 owner_rid; uint32 grp_rid; SEC_ACL *dacl = psd->dacl; BOOL all_aces_are_inherit_only = (is_directory ? True : False); int i; *pmode = 0; *puser = (uid_t)-1; *pgrp = (gid_t)-1; if(security_info_sent == 0) { DEBUG(0,("unpack_nt_permissions: no security info sent !\n")); return False; } /* * Windows 2000 sends the owner and group SIDs as the logged in * user, not the connected user. But it still sends the file * owner SIDs on an ACL set. So we need to check for the file * owner and group SIDs as well as the owner SIDs. JRA. */ create_file_sids(psbuf, &file_owner_sid, &file_grp_sid); /* * Validate the owner and group SID's. */ memset(&owner_sid, '\0', sizeof(owner_sid)); memset(&grp_sid, '\0', sizeof(grp_sid)); DEBUG(5,("unpack_nt_permissions: validating owner_sid.\n")); /* * Don't immediately fail if the owner sid cannot be validated. * This may be a group chown only set. */ if(!validate_unix_sid( &owner_sid, &owner_rid, psd->owner_sid)) DEBUG(3,("unpack_nt_permissions: unable to validate owner sid.\n")); else if(security_info_sent & OWNER_SECURITY_INFORMATION) *puser = pdb_user_rid_to_uid(owner_rid); /* * Don't immediately fail if the group sid cannot be validated. * This may be an owner chown only set. */ if(!validate_unix_sid( &grp_sid, &grp_rid, psd->grp_sid)) DEBUG(3,("unpack_nt_permissions: unable to validate group sid.\n")); else if(security_info_sent & GROUP_SECURITY_INFORMATION) *pgrp = pdb_user_rid_to_gid(grp_rid); /* * If no DACL then this is a chown only security descriptor. */ if(!(security_info_sent & DACL_SECURITY_INFORMATION) || !dacl) { *pmode = 0; return True; } /* * Now go through the DACL and ensure that * any owner/group sids match. */ for(i = 0; i < dacl->num_aces; i++) { DOM_SID ace_sid; SEC_ACE *psa = &dacl->ace_list[i]; if((psa->type != SEC_ACE_TYPE_ACCESS_ALLOWED) && (psa->type != SEC_ACE_TYPE_ACCESS_DENIED)) { DEBUG(3,("unpack_nt_permissions: unable to set anything but an ALLOW or DENY ACE.\n")); return False; } /* * Ignore or remove bits we don't care about on a directory ACE. */ if(is_directory) { if(psa->flags & SEC_ACE_FLAG_INHERIT_ONLY) { DEBUG(3,("unpack_nt_permissions: ignoring inherit only ACE.\n")); continue; } /* * At least one of the ACE entries wasn't inherit only. * Flag this so we know the returned mode is valid. */ all_aces_are_inherit_only = False; } /* * Windows 2000 sets these flags even on *file* ACE's. This is wrong * but we can ignore them for now. Revisit this when we go to POSIX * ACLs on directories. */ psa->flags &= ~(SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT); if(psa->flags != 0) { DEBUG(1,("unpack_nt_permissions: unable to set ACE flags (%x).\n", (unsigned int)psa->flags)); return False; } /* * The security mask may be UNIX_ACCESS_NONE which should map into * no permissions (we overload the WRITE_OWNER bit for this) or it * should be one of the ALL/EXECUTE/READ/WRITE bits. Arrange for this * to be so. Any other bits override the UNIX_ACCESS_NONE bit. */ psa->info.mask &= (GENERIC_ALL_ACCESS|GENERIC_EXECUTE_ACCESS|GENERIC_WRITE_ACCESS| GENERIC_READ_ACCESS|UNIX_ACCESS_NONE|FILE_ALL_ATTRIBUTES); if(psa->info.mask != UNIX_ACCESS_NONE) psa->info.mask &= ~UNIX_ACCESS_NONE; sid_copy(&ace_sid, &psa->sid); if(sid_equal(&ace_sid, &file_owner_sid)) { /* * Map the desired permissions into owner perms. */ if(psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED) *pmode |= map_nt_perms( psa->info, S_IRUSR); else *pmode &= ~(map_nt_perms( psa->info, S_IRUSR)); } else if( sid_equal(&ace_sid, &file_grp_sid)) { /* * Map the desired permissions into group perms. */ if(psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED) *pmode |= map_nt_perms( psa->info, S_IRGRP); else *pmode &= ~(map_nt_perms( psa->info, S_IRGRP)); } else if( sid_equal(&ace_sid, &global_sid_World)) { /* * Map the desired permissions into other perms. */ if(psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED) *pmode |= map_nt_perms( psa->info, S_IROTH); else *pmode &= ~(map_nt_perms( psa->info, S_IROTH)); } else { DEBUG(0,("unpack_nt_permissions: unknown SID used in ACL.\n")); return False; } } if (is_directory && all_aces_are_inherit_only) { /* * Windows 2000 is doing one of these weird 'inherit acl' * traverses to conserve NTFS ACL resources. Just pretend * there was no DACL sent. JRA. */ DEBUG(10,("unpack_nt_permissions: Win2k inherit acl traverse. Ignoring DACL.\n")); free_sec_acl(&psd->dacl); } return True; } /**************************************************************************** Reply to set a security descriptor. Map to UNIX perms. ****************************************************************************/ static int call_nt_transact_set_security_desc(connection_struct *conn, char *inbuf, char *outbuf, int length, int bufsize, char **ppsetup, char **ppparams, char **ppdata) { uint32 total_parameter_count = IVAL(inbuf, smb_nts_TotalParameterCount); char *params= *ppparams; char *data = *ppdata; prs_struct pd; SEC_DESC *psd = NULL; uint32 total_data_count = (uint32)IVAL(inbuf, smb_nts_TotalDataCount); uid_t user = (uid_t)-1; gid_t grp = (gid_t)-1; mode_t perms = 0; SMB_STRUCT_STAT sbuf; files_struct *fsp = NULL; uint32 security_info_sent = 0; BOOL got_dacl = False; if(!lp_nt_acl_support()) return(UNIXERROR(ERRDOS,ERRnoaccess)); if(total_parameter_count < 8) return(ERROR(ERRDOS,ERRbadfunc)); if((fsp = file_fsp(params,0)) == NULL) return(ERROR(ERRDOS,ERRbadfid)); security_info_sent = IVAL(params,4); DEBUG(3,("call_nt_transact_set_security_desc: file = %s, sent 0x%x\n", fsp->fsp_name, (unsigned int)security_info_sent )); /* * Init the parse struct we will unmarshall from. */ prs_init(&pd, 0, 4, UNMARSHALL); /* * Setup the prs_struct to point at the memory we just * allocated. */ prs_give_memory( &pd, data, total_data_count, False); /* * Finally, unmarshall from the data buffer. */ if(!sec_io_desc( "sd data", &psd, &pd, 1)) { free_sec_desc(&psd); DEBUG(0,("call_nt_transact_set_security_desc: Error in unmarshalling \ security descriptor.\n")); /* * Return access denied for want of a better error message.. */ return(UNIXERROR(ERRDOS,ERRnoaccess)); } /* * Get the current state of the file. */ if(fsp->is_directory) { if(dos_stat(fsp->fsp_name, &sbuf) != 0) { free_sec_desc(&psd); return(UNIXERROR(ERRDOS,ERRnoaccess)); } } else { int ret; if(fsp->fd_ptr == NULL) ret = dos_stat(fsp->fsp_name, &sbuf); else ret = sys_fstat(fsp->fd_ptr->fd,&sbuf); if(ret != 0) { free_sec_desc(&psd); return(UNIXERROR(ERRDOS,ERRnoaccess)); } } /* * Unpack the user/group/world id's and permissions. */ if(!unpack_nt_permissions( &sbuf, &user, &grp, &perms, security_info_sent, psd, fsp->is_directory)) { free_sec_desc(&psd); return(UNIXERROR(ERRDOS,ERRnoaccess)); } if (psd->dacl != NULL) got_dacl = True; free_sec_desc(&psd); /* * Do we need to chown ? */ if((user != (uid_t)-1 || grp != (uid_t)-1) && (sbuf.st_uid != user || sbuf.st_gid != grp)) { DEBUG(3,("call_nt_transact_set_security_desc: chown %s. uid = %u, gid = %u.\n", fsp->fsp_name, (unsigned int)user, (unsigned int)grp )); if(dos_chown( fsp->fsp_name, user, grp) == -1) { DEBUG(3,("call_nt_transact_set_security_desc: chown %s, %u, %u failed. Error = %s.\n", fsp->fsp_name, (unsigned int)user, (unsigned int)grp, strerror(errno) )); return(UNIXERROR(ERRDOS,ERRnoaccess)); } /* * Recheck the current state of the file, which may have changed. * (suid/sgid bits, for instance) */ if(fsp->is_directory) { if(dos_stat(fsp->fsp_name, &sbuf) != 0) { return(UNIXERROR(ERRDOS,ERRnoaccess)); } } else { int ret; if(fsp->fd_ptr == NULL) ret = dos_stat(fsp->fsp_name, &sbuf); else ret = sys_fstat(fsp->fd_ptr->fd,&sbuf); if(ret != 0) return(UNIXERROR(ERRDOS,ERRnoaccess)); } } /* * Only change security if we got a DACL. */ if((security_info_sent & DACL_SECURITY_INFORMATION) && got_dacl) { /* * Check to see if we need to change anything. * Enforce limits on modified bits *only*. Don't enforce masks * on bits not changed by the user. */ if(fsp->is_directory) { perms &= (lp_dir_security_mask(SNUM(conn)) | sbuf.st_mode); perms |= (lp_force_dir_security_mode(SNUM(conn)) & ( perms ^ sbuf.st_mode )); } else { perms &= (lp_security_mask(SNUM(conn)) | sbuf.st_mode); perms |= (lp_force_security_mode(SNUM(conn)) & ( perms ^ sbuf.st_mode )); } /* * Preserve special bits. */ perms |= (sbuf.st_mode & ~0777); /* * Do we need to chmod ? */ if(sbuf.st_mode != perms) { DEBUG(3,("call_nt_transact_set_security_desc: chmod %s. perms = 0%o.\n", fsp->fsp_name, (unsigned int)perms )); if(dos_chmod( fsp->fsp_name, perms) == -1) { DEBUG(3,("call_nt_transact_set_security_desc: chmod %s, 0%o failed. Error = %s.\n", fsp->fsp_name, (unsigned int)perms, strerror(errno) )); return(UNIXERROR(ERRDOS,ERRnoaccess)); } } } send_nt_replies(inbuf, outbuf, bufsize, 0, NULL, 0, NULL, 0); return -1; } /**************************************************************************** Reply to IOCTL - not implemented - no plans. ****************************************************************************/ static int call_nt_transact_ioctl(connection_struct *conn, char *inbuf, char *outbuf, int length, int bufsize, char **ppsetup, char **ppparams, char **ppdata) { static BOOL logged_message = False; if(!logged_message) { DEBUG(0,("call_nt_transact_ioctl: Currently not implemented.\n")); logged_message = True; /* Only print this once... */ } return(ERROR(ERRSRV,ERRnosupport)); } /**************************************************************************** Reply to a SMBNTtrans. ****************************************************************************/ int reply_nttrans(connection_struct *conn, char *inbuf,char *outbuf,int length,int bufsize) { int outsize = 0; #if 0 /* Not used. */ uint16 max_setup_count = CVAL(inbuf, smb_nt_MaxSetupCount); uint32 max_parameter_count = IVAL(inbuf, smb_nt_MaxParameterCount); uint32 max_data_count = IVAL(inbuf,smb_nt_MaxDataCount); #endif /* Not used. */ uint32 total_parameter_count = IVAL(inbuf, smb_nt_TotalParameterCount); uint32 total_data_count = IVAL(inbuf, smb_nt_TotalDataCount); uint32 parameter_count = IVAL(inbuf,smb_nt_ParameterCount); uint32 parameter_offset = IVAL(inbuf,smb_nt_ParameterOffset); uint32 data_count = IVAL(inbuf,smb_nt_DataCount); uint32 data_offset = IVAL(inbuf,smb_nt_DataOffset); uint16 setup_count = 2*CVAL(inbuf,smb_nt_SetupCount); /* setup count is in *words* */ uint16 function_code = SVAL( inbuf, smb_nt_Function); char *params = NULL, *data = NULL, *setup = NULL; uint32 num_params_sofar, num_data_sofar; if(global_oplock_break && (function_code == NT_TRANSACT_CREATE)) { /* * Queue this open message as we are the process of an oplock break. */ DEBUG(2,("reply_nttrans: queueing message NT_TRANSACT_CREATE \ due to being in oplock break state.\n" )); push_oplock_pending_smb_message( inbuf, length); return -1; } outsize = set_message(outbuf,0,0,True); /* * All nttrans messages we handle have smb_wct == 19 + setup_count. * Ensure this is so as a sanity check. */ if(CVAL(inbuf, smb_wct) != 19 + (setup_count/2)) { DEBUG(2,("Invalid smb_wct %d in nttrans call (should be %d)\n", CVAL(inbuf, smb_wct), 19 + (setup_count/2))); return(ERROR(ERRSRV,ERRerror)); } /* Allocate the space for the setup, the maximum needed parameters and data */ if(setup_count > 0) setup = (char *)malloc(setup_count); if (total_parameter_count > 0) params = (char *)malloc(total_parameter_count); if (total_data_count > 0) data = (char *)malloc(total_data_count); if ((total_parameter_count && !params) || (total_data_count && !data) || (setup_count && !setup)) { DEBUG(0,("reply_nttrans : Out of memory\n")); return(ERROR(ERRDOS,ERRnomem)); } /* Copy the param and data bytes sent with this request into the params buffer */ num_params_sofar = parameter_count; num_data_sofar = data_count; if (parameter_count > total_parameter_count || data_count > total_data_count) exit_server("reply_nttrans: invalid sizes in packet.\n"); if(setup) { memcpy( setup, &inbuf[smb_nt_SetupStart], setup_count); DEBUG(10,("reply_nttrans: setup_count = %d\n", setup_count)); dump_data(10, setup, setup_count); } if(params) { memcpy( params, smb_base(inbuf) + parameter_offset, parameter_count); DEBUG(10,("reply_nttrans: parameter_count = %d\n", parameter_count)); dump_data(10, params, parameter_count); } if(data) { memcpy( data, smb_base(inbuf) + data_offset, data_count); DEBUG(10,("reply_nttrans: data_count = %d\n",data_count)); dump_data(10, data, data_count); } if(num_data_sofar < total_data_count || num_params_sofar < total_parameter_count) { /* We need to send an interim response then receive the rest of the parameter/data bytes */ outsize = set_message(outbuf,0,0,True); send_smb(Client,outbuf); while( num_data_sofar < total_data_count || num_params_sofar < total_parameter_count) { BOOL ret; ret = receive_next_smb(inbuf,bufsize,SMB_SECONDARY_WAIT); if((ret && (CVAL(inbuf, smb_com) != SMBnttranss)) || !ret) { outsize = set_message(outbuf,0,0,True); if(ret) { DEBUG(0,("reply_nttrans: Invalid secondary nttrans packet\n")); } else { DEBUG(0,("reply_nttrans: %s in getting secondary nttrans response.\n", (smb_read_error == READ_ERROR) ? "error" : "timeout" )); } if(params) free(params); if(data) free(data); if(setup) free(setup); return(ERROR(ERRSRV,ERRerror)); } /* Revise total_params and total_data in case they have changed downwards */ total_parameter_count = IVAL(inbuf, smb_nts_TotalParameterCount); total_data_count = IVAL(inbuf, smb_nts_TotalDataCount); num_params_sofar += (parameter_count = IVAL(inbuf,smb_nts_ParameterCount)); num_data_sofar += ( data_count = IVAL(inbuf, smb_nts_DataCount)); if (num_params_sofar > total_parameter_count || num_data_sofar > total_data_count) exit_server("reply_nttrans2: data overflow in secondary nttrans packet\n"); memcpy( ¶ms[ IVAL(inbuf, smb_nts_ParameterDisplacement)], smb_base(inbuf) + IVAL(inbuf, smb_nts_ParameterOffset), parameter_count); memcpy( &data[IVAL(inbuf, smb_nts_DataDisplacement)], smb_base(inbuf)+ IVAL(inbuf, smb_nts_DataOffset), data_count); } } if (Protocol >= PROTOCOL_NT1) { uint16 flg2 = SVAL(outbuf,smb_flg2); SSVAL(outbuf,smb_flg2,flg2 | 0x40); /* IS_LONG_NAME */ } /* Now we must call the relevant NT_TRANS function */ switch(function_code) { case NT_TRANSACT_CREATE: outsize = call_nt_transact_create(conn, inbuf, outbuf, length, bufsize, &setup, ¶ms, &data); break; case NT_TRANSACT_IOCTL: outsize = call_nt_transact_ioctl(conn, inbuf, outbuf, length, bufsize, &setup, ¶ms, &data); break; case NT_TRANSACT_SET_SECURITY_DESC: outsize = call_nt_transact_set_security_desc(conn, inbuf, outbuf, length, bufsize, &setup, ¶ms, &data); break; case NT_TRANSACT_NOTIFY_CHANGE: outsize = call_nt_transact_notify_change(conn, inbuf, outbuf, length, bufsize, &setup, ¶ms, &data); break; case NT_TRANSACT_RENAME: outsize = call_nt_transact_rename(conn, inbuf, outbuf, length, bufsize, &setup, ¶ms, &data); break; case NT_TRANSACT_QUERY_SECURITY_DESC: outsize = call_nt_transact_query_security_desc(conn, inbuf, outbuf, length, bufsize, &setup, ¶ms, &data); break; default: /* Error in request */ DEBUG(0,("reply_nttrans: Unknown request %d in nttrans call\n", function_code)); if(setup) free(setup); if(params) free(params); if(data) free(data); return (ERROR(ERRSRV,ERRerror)); } /* As we do not know how many data packets will need to be returned here the various call_nt_transact_xxxx calls must send their own. Thus a call_nt_transact_xxxx routine only returns a value other than -1 when it wants to send an error packet. */ if(setup) free(setup); if(params) free(params); if(data) free(data); return outsize; /* If a correct response was needed the call_nt_transact_xxxx calls have already sent it. If outsize != -1 then it is returning an error packet. */ }