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-
-
- Introduction
- ------------
-
- This chapter is a description of the Trion BBS file system.
- The file system is what lets the user list files, mark files
- and download or upload files.
-
-
- File catalogue format
- ---------------------
-
- For the system to be able to show lists of files it needs
- to maintain a file catalogue.
- The file catalogue is stored (default) in the directory
- "trion:filecat/" but this can be changed by editing the
- TrionRM.cfg configuration file (see chapter 3).
-
- The file catalogue actually consists of a number of files,
- a set of files for each section and a "GlobalIndex.dat" file.
- Each section has 3 files.
- A "FileData.N" file, a "Description.N" file, and a "KeyIndex.N"
- file. (where 'N' is the number of the section)
-
- The FileData files contain the actuall information on files,
- like name, size, upload date, number of downloads etc.
- All the entries in this file have the same (fixed) size,
- this is usefull because when a file entry has to be updated
- because it was for instance downloaded or the validated
- flag was set only a tiny part of the file has to be changed.
- Also this is necessary because the position of the file entry
- can't be changed or the KeyIndex and GlobalIndex file pointers
- are not valid anymore. This also means that there is no specific
- order to the files, a new file is stored over deleted ones or
- appended to the end of the file.
-
- Because of fixed size format of the FileData files there is no
- place for (long) descriptions .. so they are stored in the
- Description files. The descriptions are stored in the same
- order as the files in the FileData files. So they are
- easy to match to the file entries. Every entry in the
- FileData files has a "pointer" to the description file
- so it knows where it's description is.
- When a description file was accidently changed or edited, for instance
- one line has gotten shorter or longer, then the pointers no longer match
- with the descriptions in that section. This can be fixed by
- running the "RMcommander" program.
-
- The KeyIndex files contain the sequence of the files in Alphabetical
- and chronological order.
- They are needed for the BBS to know in what order to list files.
- When you lost any KeyIndex files, you can remake them with
- the "RMcommander" program.
-
- Every file has an entry in the file catalogue with a lot of
- information .. but also every file has a short entry in the
- globalindex, this is needed for very quick access to the file
- catalogue if it has to be downloaded or if there has to be checked
- if a file exists yet (while uploading for instance) .. because the file
- is sorted on name and the TrionRM has an index in memory of
- the characters the names start with, it can get the
- position in the file catalogue of the file in a split second.
- When you have lost the GlobalIndex file, or you are
- removing file sections you have to remake the GlobalIndex with
- the "RMcommander" program.
-
-
-
-
-
-
- User access capabilities
- ------------------------
-
- The access a user has to a file section is defined in the "template"
- that is connected to his level. Templates are defined in the
- templates.cfg and described in chapter 3.
-
- In a template, lines with sections ranges with the same access flags
- are listed. Like this:
-
- FileAccess [VLDU---] , 1 , 3-5 , 6-9 , 12-14 , 20-35 , 60-73
- FileAccess [V--U---] , 2
-
- (with 'All' you can use all areas with the given flags, same
- effect as 1 - 65536)
-
- At the moment there are 7 flags for file sections:
-
- View List Download Upload Freedownload Edit Newfilesvisible
-
- Where the flags have the folowing meaning:
-
- V = View, User sees area in Lists and can go to this area.
- L = List, User can Browse and FileList through this area.
- D = Download, User can Download from this area.
- U = Upload, User can Upload in this area.
- F = Freedownload, This area is Freedownload for users with this level.
- E = Edit, User can Edit files in this area (FI while browsing).
- N = NewFilesVisible, UnValidated files are visible.
-
-
-
-
-
-
-
-
- Parameters for file transfers
- -----------------------------
-
- There are a number of parameters in a users template that have
- consequences on the number of bytes and files than can be downloaded
- by users.
-
- When a file is not freedownload ratios count for each file downloaded.
- Which means that that must be a certain number of uploads for a
- certain number of downloads. (Note that ratios are optional per template)
-
-
- FileRatio <= if the ratio between the number of downloaded files and
- uploaded files is equal or higher then this number then
- a user has to upload before he can download.
- disabled when 0 or 'Off'.
-
- ByteRatio <= if the ratio between the number of downloaded bytes and
- uploaded bytes is equal or higher then this number then
- a user has to upload before he can download.
- disabled when 0 or 'Off'.
-
-
- Als there is an optional limit on the number of bytes a user
- can download in a day.
-
-
- DownloadPerDay <= Number of bytes a user can download each day.
-
-
- There is an option to allow new users to download a number of
- bytes and files before the ratio's kick in.
-
-
- FreeBytes <= Number of bytes a user can download before ratio's
- kick in. Note that if zero a new user first has
- to upload before he can download.
-
- FreeDownloads <= Number of Files a user can download before ratio's
- kick in. Note that if zero a new user first has
- to upload before he can download.
-
-
-
- with 'Off' you can turn off a field (same effect as value 0)
-
- You can use 'Off' with: FileRatio, ByteRatio, MaxBytesPerDay
-
-
-
-
-
- Download constraints
- --------------------
-
- Sometimes users can't mark a file he sees in a list, this can have
- a number of reasons.
-
- No download access:
-
- He needs download access to the section in the template of his level.
- The file section itself needs to have a download flag in the
- fileareas.cfg
-
- File not validated:
-
- If a file is not validated it can not be marked, unless the user
- has the E(dit) flag in the template for this section.
-
- Insufficient time remaining:
-
- If a user tries to mark a file, an estimated transfer time is calculated.
- If that time is longer than the time a user has left online that day,
- the file is not marked.
-
- User will Exceed daily download byte limitation:
-
- A user can only download a number of bytes a day, which is defined
- in a parameter in the template for his level.
-
- User will exceed his file ratio or byte ratio:
-
- When a file is not freedownload, (the file and the template and the
- section has no Freedownload flag) the ratios are valid.
- When a user has downloaded so much bytes or files that he can't
- download anymore he first has to upload before he can download again.
-
-
- File catalogue entry attributes
- -------------------------------
-
- Each file can have a few attributes or flags, at the moment there
- are a two.
-
- Freedownload:
-
- When a file has the freedownload flag it has an other color in
- the file list then other files, and it is not counted in file and
- byte counters for ratios.
- Note that there are separate counters for total downloaded files
- and bytes .. and files and bytes that are not freedownload.
-
- Validated:
-
- When a file is not validated yet it is only shown in the filelist
- when N(ewFilesVisible) flag in the template of the level of the user.
- Files can be automatically validated at upload be giving the file
- section a V(alidate) flag.
-
-
- File area User interface
- ------------------------
-
- When using the default BBStext when listing files there is
- a 2 digit number in front of each file. This number can be
- used to mark a file instead of typing the whole name where
- error are easily made.
- Note the the number start with zero and go up to 99 to start
- at zero again.
- Note that you don't have to type the first digit if it is zero.
-
- When searching for file wildcards such as "*", "#?" or "?" can
- be used. Note that the system will add a '*' at both ends of
- the search string. So you can type a part of a name like "test"
- and the system will transform it into "*test*" to search for
- all file names of file descriptions which contain the word "test".
-
- When a user wants to view an archive the system will determine
- what the type is of the archive. It does this not by looking at
- the extension of the file but by looking at the first bytes of
- the files. At this moment the definition of archive types is
- internal in the BBS program, but this will probably be changed in
- the feature to a configuration file like the archive.cfg or a
- door.
- The BBS program will run the "trion:scripts/viewarchive" script
- to list the contents of the archive to a temporary file in ram:.
-
- Note that when a file is not completely received during an
- upload that the user is asked if the file has te be removed.
- If the file is not removed the file upload can be resumed if
- a protocol is used with a resume option.
-
-
-
- File area configuration.
- ------------------------
-
- File areas are configured in the 'Trion:cfg/FileAreas.cfg'.
-
- Each config line is in a specific format:
-
-
- #area flags path areaName
-
-
- Examples:
-
- #001 [U----] dh1:DOWNLOADING/Upload/ Upload
- #002 [U----] dh1:downloading/Sysop/ Voor_Sysop
- #009 [-FV--] dh1:downloading/Trion/ Trion
- #060 [---M-] dh1:down.pc/Algemeen/ PC_Algemeen
-
-
- Note: Don't use area number #0
- Note: Don't forget a ':' or '/' at the end of a path !!
-
- Look at the provided config for more examples of the format used.
-
-
-
- Each area has a number of flags which decides it's characteristics.
- Which means that those flags can not be overruled by flags in the
- users template.
-
- Flags:
-
- U = Upload , Area is open for uploads.
- F = Freedownload , All files in this area are freedownload.
- V = Validate , Files area AutoValidated when Uploaded.
- M = MS-DOS , All names will be in the 8.3 format in this area.
-
-
- Note that a file is freedownload if either the file has a freedownload
- flag OR the area has a freedowload flag OR the user has a freedownload
- flag for this area in his template.
-
- Note that a user can Upload to an area is the Area has an Upload flag
- AND the user has an Upload flag in his template.
-
- Note that a user with an Edit flag can Validate files, kill files
- and make files freedownload while browsing.
-
-
-
- There is also a configuration file to configure from which sections
- file requests are allowed. The configuration file is called
- frequest.cfg and can default be found in "Trion:cfg/".
-
- The fine exists of 2 parts.
- The first part is a list of the sections from where freqs are
- allowed.
- This section is terminated with a '#' on an empty line.
- The format of this part of the config is:
-
- SECTIONS <range> [, <range>]
-
- For example:
-
- SECTIONS 3-5 , 9 , 12-14 , 20-35
- SECTIONS 60-73
-
-
- In the second part of the file magic names are configured.
- A magic name is a short fixed symbolic name which is linked
- to a recent path and file.
- The format of this part of the config is:
-
- <MagicName> <Password> <Path/File>
-
- if no password needed to freq specify NONE
- password is 6 (or 8) characters of less
-
- For example:
-
- FILES NONE downloading:docs/allfiles.lha
- TRION NONE down.amiga:bbs/TrionBBS100.LZX
-
-
-
-
- Look for a long explanation of the filenet.cfg and filenodes.cfg
- in the Trion:docs/tick.doc text.
-
-
-