CNet 5 SDK Structure Reference

Field-by-field documentation for all major CNet data structures. All structs use SAS/C 2-byte (word) alignment, which is the natural alignment on m68k. On other architectures (x86, ARM, etc.), this alignment is enforced via include/cnet/align.h, which provides CNET_PACK_BEGIN / CNET_PACK_END macros wrapping #pragma pack(push, 2) / #pragma pack(pop).

Offset caveat: Header offset comments in the original SDK source are not authoritative and contain known errors. Offsets verified through binary testing on a live CNet v5.36c system are marked as confirmed. Unverified offsets are listed as they appear in the headers but should not be relied upon for binary-level access.

IsDate -- 6 bytes
UserData -- 672 bytes
Privs -- 92 bytes
AccessGroup -- 156 bytes
PortData -- ~10 KB
PortDataExtension
MainPort -- system-global state
MainPortExtension
SubboardType4 -- ~696 bytes
ItemType3 -- 168 bytes
ItemHeader -- 34 bytes
HeaderType -- response/post header
MessageType3 -- message response record
BaseUser -- per-user-per-subboard
SelectType -- file selection entry
CPort -- door communication port
CMessage -- door IPC message
CNetCContext -- cnetc.library context
SerPort4 -- modem/port configuration
RangeContext -- range parsing state
CNetFileEntry -- directory listing node
MailHeader4 -- v4.12+ mail header
NewMailFolder -- mail folder
ChargeSet / ChargeType -- accounting
CNUserCache -- user cache entry
KeyElement4 -- user key index
NewConfig1 -- global configuration
PortConfig -- per-port configuration
FreeType -- subboard free-space node
Other Structures

IsDate

Header: include/cnet/dates.h Size: 6 bytes

CNet's compact date/time representation. Year is stored as an offset from 1900 (ISDATE_BASE_YEAR), so year 2000 is stored as 100.

Offset	Field	Type	Description
0	Year	UBYTE	Year minus 1900
1	Month	UBYTE	Month (1-12)
2	Date	UBYTE	Day of month (1-31)
3	Hour	UBYTE	Hour (0-23)
4	Minute	UBYTE	Minute (0-59)
5	Second	UBYTE	Second (0-59)

Usage: Found throughout the system -- user records, item timestamps, subboard metadata, port state. Functions like CNetExplodeTime() and CNetImplodeTime() convert between IsDate and seconds-since-epoch.

Related defines:

ISDATE_BASE_YEAR = 1900
SECONDS_IN_DAY = 86400
SECONDS_IN_HOUR = 3600
SECONDS_IN_MINUTE = 60

UserData

Header: include/cnet/users.h Size: 672 bytes (LONG-aligned)

The complete user account record, stored in sysdata:bbs.udata4. One record per account, indexed by account number. Contains identity, statistics, preferences, and an embedded Privs structure.

Offset	Field	Type	Size	Description
0	IDNumber	long	4	Unique serial ID (never reused)
4	Handle	char[]	21	User's handle/nickname
25	RealName	char[]	26	Real name
51	Address	char[]	31	Street address
82	CityState	char[]	31	City and state
113	ZipCode	char[]	11	Zip/postal code
124	Country	char[]	8	Country code
132	PhoneNo	char[]	17	Data phone (Euro 8-7 format possible)
149	PassWord	char[]	15	Encrypted password
164	Comments	char[]	34	Sysop comments
198	Macro[3]	char[][36]	108	User-defined macro keys
306	Organ	char[]	31	Organization
337	PhoneVerified	UBYTE	1	Phone verification flag
338	z	PortData *	4	Transient: set during LockAccount()
342	Birthdate	IsDate	6	User's birthday
348	FirstCall	IsDate	6	Date of first call
354	LastCall	IsDate	6	Date of most recent call
360	EMailFlags	ULONG	4	Email preference flags
364	InterfaceType	USHORT	2	0 = CNet/4 style, 1 = CNet/3 style
366	ConnectDate	IsDate	6	Date of current connection
372	YankDate	IsDate	6	Date of last yank operation
378	Access	BYTE	1	Current access group level (0-31)
379	ExpireAccess	BYTE	1	Access level to expire to
380	ShowNewsHead	UBYTE	1	Show UUCP news headers
381	PfileTimeToday	BYTE	1	PFile time used today
382	SplitChatFlags	UBYTE	1	Bit 0: split-screen chat
383	AutoDecodeMail	BYTE	1	Auto-decode MIME in email
384	TextSet	BYTE	1	BBSTEXT/MENU translation set
385	TimeForm	BYTE	1	Time display format
386	MoreMode	BYTE	1	"More?" prompt mode
387	LineFeeds	BYTE	1	User requires line feeds
388	FracBal	BYTE	1	Balance fraction (1/100 cent)
389	TimeZone	BYTE	1	Timezone offset from system time
390	Colors	BYTE	1	ANSI color support
391	Tabs	BYTE	1	ANSI tab support
392	ANSI	BYTE	1	ANSI emulation type
393	Sex	BYTE	1	Gender
394	AutoMore	BYTE	1	Auto "More?" and CLS between messages
395	TermType	BYTE	1	Terminal emulation type
396	HelpLevel	BYTE	1	Help level (novice/intermediate/expert)
397	CompType	BYTE	1	Computer type (index into BBSMENU section 30)
398	DefProtocol	BYTE	1	Default transfer protocol
399	TermWidth	BYTE	1	Terminal width in characters
400	TermLength	BYTE	1	Terminal height in lines
401	MailBoxOpen	BYTE	1	Mailbox open/closed state
402	MailForward	short	2	Forward mail to this account (0 = disabled)
404	TotalCalls	long	4	Lifetime call count
408	PubMessages	long	4	Public messages posted
412	PriMessages	long	4	Private messages sent
416	UpBytes	long	4	Total uploaded kilobytes
420	UpFiles	long	4	Total uploaded files
424	DownBytes	long	4	Total downloaded kilobytes
428	DownFiles	long	4	Total downloaded files
432	FileCredits	long	4	File credit balance
436	ByteCredits	long	4	Byte credit balance
440	TimeCredits	long	4	Time credit balance
444	Balance	long	4	Account financial balance
448	NetCredits	long	4	Network credits
452	DoorPoints	long	4	Door/game point balance
456	DayUpBytes	long	4	Bytes uploaded today
460	DayDownBytes	long	4	Bytes downloaded today
464	DayUpFiles	short	2	Files uploaded today
466	DayDownFiles	short	2	Files downloaded today
468	CallsToday	short	2	Calls made today
470	TimeToday	short	2	Minutes online today
472	LogonAttempts	short	2	Failed logon attempts
474	BaudRate	USHORT	2	Current connection baud rate
476	HighBaud	USHORT	2	Highest baud ever connected
478	UUCP	char[]	11	Mail ID (max 9 chars + terminator)
489	PName	UBYTE	1	Privacy: name
490	PAge	UBYTE	1	Privacy: age
491	PAddress	UBYTE	1	Privacy: street address
492	PVoice	UBYTE	1	Privacy: phone numbers
493	PData	UBYTE	1	Privacy: data
494	Banner	char[]	43	User's banner/tagline
537	VoiceNo	char[]	17	Voice phone number
554	YankCount	short	2	Number of yanks
556	ExpireDate	IsDate	6	Account expiration date
562	FNewDate	IsDate	6	"Files new since" date
568	more	char[]	7	Reserved
575	YankCR	UBYTE	1	Add CRs to yank text
576	YankArc	UBYTE	1	Yank archiver preference
577	DefEditor	BYTE	1	Default editor
578	AutoHide	BYTE	1	Auto-hide flag
579	MailSort	BYTE	1	Mail sorting preference
580	MyPrivs	Privs	92	Effective privilege set

Access: Use LockAccount()/UnLockAccount() to read/modify safely. Doors should use CNC_ReadAccount()/CNC_SaveAccount(). The z->user1 field in PortData contains the currently logged-in user's data (offset 68).

Privs

Header: include/cnet/users.h Size: 92 bytes

Privilege and access control flags. Each user has an embedded Privs in their UserData (at offset 580). Access groups (AccessGroup) also contain a Privs that serves as the template.

Offset	Field	Type	Size	Description
0	MBaseFlags	long	4	Message base access flags
4	FBaseFlags	long	4	File base access flags
8	LBaseFlags	long	4	GFiles/PFiles/Telnet/Other flags
12	ABits	ULONG	4	Primary ability bitfield (32 flags)
16	DailyDownBytes	long	4	Daily download byte limit
20	DailyUpBytes	long	4	Daily upload byte limit
24	XFreeBytes	long	4	(Unused)
28	XFreeFiles	long	4	(See global default in Config1)
32	Calls	short	2	Maximum calls per day
34	CallMinutes	short	2	Maximum minutes per call
36	DailyMinutes	short	2	Maximum minutes per day
38	DailyDownloads	short	2	Maximum downloads per day
40	DailyUploads	short	2	Maximum uploads per day
42	Messages	short	2	Maximum messages per call
44	Feedbacks	short	2	Maximum feedbacks per call
46	EditorLines	short	2	Maximum editor lines
48	Idle	short	2	Idle timeout (minutes)
50	MaxMailKBytes	short	2	Maximum mailbox size (KB)
52	PurgeDays	short	2	Account purge threshold (days)
54	FileRatio	UBYTE	1	File ratio set 1
55	ByteRatio	UBYTE	1	Byte ratio set 1
56	FileRatio2	UBYTE	1	File ratio set 2
57	ByteRatio2	UBYTE	1	Byte ratio set 2
58	FileRatio3	UBYTE	1	File ratio set 3
59	ByteRatio3	UBYTE	1	Byte ratio set 3
60	ABits2	ULONG	4	Extended ability bitfield (32 more flags)
64	SigLines	short	2	Maximum signature lines
66	AllowAliases	UBYTE	1	Tri-state: allow aliases
67	DeleteOwn	UBYTE	1	Tri-state: delete own posts
68	Anonymous	UBYTE	1	Tri-state: anonymous posting
69	PrivateArea	UBYTE	1	Tri-state: private areas
70	DailyPfileMinutes	short	2	Daily PFile time limit
72	LogToMail	short	2	Account to receive log copies
74	LogFlags	long	4	Log event flags
78	CallBack	UBYTE	1	Tri-state: callback verification
79	TermLink	UBYTE	1	TermLink access
80	CallerID	UBYTE	1	Caller ID requirement
81	PageSysop	UBYTE	1	Sysop page permission
82	notused	LONG	4	Reserved
86	exp	char[]	2	Reserved
88	Alias	short	2	Alias settings
90	Dictionary	short	2	Dictionary settings

ABits Bitfield

Bit	Name	Description
0	EMAIL	Can use email
1	PFILE	Can run PFiles (doors)
2	GFILE	Can access GFiles
3	ULIST	Can access user list
4	SYSOP	Has sysop privileges
5	REWARDS	Receives download rewards
6	FCREDEX	File credit exempt
7	BCREDEX	Byte credit exempt
8	EXPIREMAIL	Send expiration notice via mail
9	BULKMAIL	Can send bulk mail
11	URGENTMAIL	Can send urgent mail
12	TIMESBP	Time credits for uploads
13	FILEADD	Can add files
14	READANY	Can read any message
15	DELETEANY	Can delete any message
16	SUSPENDACCT	Account suspended
18	AUTOVALID	Auto-validate uploads
20	SEEANON	Can see anonymous posters
22	CONF	Can access conference
23	CONFCON	Conference control
24	MCI1	MCI level 1 access
25	MCI2	MCI level 2 access
26	RELOGON	Can re-logon
27	RECEIVEMAIL	Can receive mail
28	FORWARD	Can forward mail
29	VOTETOPIC	Can create vote topics
30	VOTECHOICE	Can add vote choices
31	NOLOCKS	Bypass subboard locks

ABits2 Bitfield

Bit	Name	Description
0	EDHANDLE	Can edit own handle
1	EDREALNAME	Can edit own real name
2	EDADDRESS	Can edit own address
3	EDVOICE	Can edit own voice phone
4	EDDATA	Can edit own data phone
5	BANNER	Can set banner
7	PORTMONITOR	Can monitor ports
8	VOTEMAINT	Vote maintenance
9	ALARMSYSOP	Can alarm sysop
10	OPENSCREEN	Can open port screens
11	OPENCAPTURE	Can open captures
12	NETMAIL	Can send netmail
13	FREQSEND	Can send file requests
14	NETCOSTEXEMPT	Net cost exempt
20	NETCOSTCREDITS	Use credits for net costs
21	HOLDANDCRASH	Hold and crash flags
22	FEMPTYTRASH	Force empty trash
23	BROADCAST	Can send broadcasts
24	SUPERUSER	Superuser access

AccessGroup

Header: include/cnet/users.h Size: 156 bytes

Access level template. CNet supports up to 32 access groups, stored in myp->AGC[0..31]. When a user's access level is set, their MyPrivs is typically initialized from the corresponding AccessGroup.DefPrivs.

Offset	Field	Type	Size	Description
0	Name	char[]	32	Access group name
32	DefPrivs	Privs	92	Default privilege set
124	ExpireDays	short	2	Days until access expires
126	ExpireAccess	UBYTE	1	Group to expire to
127	exp	char[]	29	Reserved

PortData

Header: include/cnet/ports.h Size: Approximately 10 KB

Per-port state structure -- one per loaded BBS port. Contains the current user's data, I/O state, editor buffers, subboard context, transfer state, screen/window resources, and much more. Referenced via z in door code.

This is the largest and most complex CNet structure. Fields are grouped by functional area below. Due to the structure's size and the number of embedded sub-structures, only the most commonly accessed fields are documented.

Current Session State (offsets 0-67)

Offset	Field	Type	Description
0	Today	IsDate	Current date/time
6	VConnectDate	IsDate	Virtual connect date (e.g., midnight reset)
12	id	short	Current user's account number
14	InPort	short	Port number
16	Age	short	User's age
18	CurrentCPS	short	Current characters-per-second rate
20	OnType	short	Logon type
22	OffType	short	Logoff type
24	CallMessages	short	Messages written this call
26	CallFeedbacks	short	Feedbacks written this call
28	TimeLeft	short	Time remaining (tenths of minutes)
32	TimeOnLine	short	Time online (tenths of minutes)
34	TimeCredit	short	Bonus time from uploads, etc.
38	Carrier	short	Carrier detect / local mode flag
40	AName	char *	Pointer to access group name string
44	SysMaint	long	TRUE if user has SYSOP_FLAG
64	Caller	long	Caller number for this session

User Data (offsets 68-1411)

Offset	Field	Type	Description
68	user1	UserData	Current user's account data (672 bytes)
740	user2	UserData	Secondary user data (672 bytes)

Navigation State

Offset	Field	Type	Description
1412	MyMail	short	User's mail count
1414	MyNewMail	short	User's new mail count
1416	bn	short	Current subboard number

I/O Flags (various offsets)

Key I/O-related fields scattered through the structure:

Field	Type	Description
OnLine	UBYTE	User is logged in (1742+5 area)
PrintFlags	UBYTE	Space/^C abort state
AtPrompt	UBYTE	At input prompt
InTransfer	UBYTE	In file transfer
ConfMode	UBYTE	In conference mode
EditorOn	char	Editor is active
NoMCI	UBYTE	Suppress MCI processing
FreezeTime	UBYTE	Stop time counting

Buffers

Field	Type	Description
InBuffer	char[256]	User input after CEnterLine()
KBuff	char[256]	Keyboard input buffer (circular, KB1/KB2)
GBuffer[16][81]	char[][]	General-purpose text buffers
pitem[8][61]	char[][]	Parsed input items
npitems	short	Number of parsed items

Editor State

Field	Type	Description
EdBuffer	char **	Array of pointers to editor lines
EdBase	char *	Pointer to editor memory block
CR	UBYTE *	Carriage return flags per line
txline	long	Number of lines in editor buffer
edbuff	char	Editor save state: 1=saved, 0=empty, -1=aborted

Door Use

Field	Type	Description
uz[10]	long[]	General purpose longs for PFile use (initialized to 0)
nPdepth	UBYTE	PFile nesting depth
CRunCount	short	C PFile depth count
CSpawn	char[84]	Door chain command

Subboard Context

Field	Type	Description
sb	SubboardType4 *	Pointer to current subboard
sorder	short[240]	Subboard ordering array
bz	short	Number of subs on current list
dz	short	Directory depth
br	short	Last used item number

Mail State

Field	Type	Description
Folders	NewMailFolder *	Linked list of mail folders
Folder0	NewMailFolder *	Current folder pointer
rmhead	MailHeader4 *	Linked list of mail headers
Aliases	MailAlias *	Linked list of mail aliases
OMail0	MailHeader4	General purpose mail header

System Pointers

Field	Type	Description
ThisTask	Task *	AmigaOS task pointer
cnp	MainPort *	Pointer to system MainPort
Window	Window *	Primary Intuition window
Screen	Screen *	Intuition screen
SocketBase	Library *	bsdsocket.library base (when opened)

Extension

Field	Type	Description
PDE	PortDataExtension *	Extension structure pointer

PortDataExtension

Header: include/cnet/ports.h

Extension fields for PortData, introduced in v4 to avoid breaking the PortData binary layout. Accessed via z->PDE.

Field	Type	Description
TNHost0	TNHostEntry *	Telnet host being listed/edited
CurrentTNHost	TNHostEntry *	Currently connected telnet host
GoMatches	LONG *	GO keyword match array
DynamicGoKey	char *	Current GO keyword for listings
DynamicGoTitle	char *	Current subboard title for GO listings
DynamicGoNum	LONG	Current GO match ordinal
InMailFwd	UBYTE	Currently forwarding mail
def_part	short	Default file partition
MailArrived	short	New mails pending for online user
lastby	char[52]	"Last message by" display field
sp	SerPort4	Port serial/modem configuration
AtOLMPrompt	UBYTE	At OLM read prompt
mydloc	char[128]	Current directory for dmaint
dflag	LONG	dmaint control flags (see `DM_FLAG_*`)
dmaintup	UBYTE	dmaint is running
DefItem	ItemType3	ARexx default item template
DefHeader	HeaderType	ARexx default header template
DefMessage	MessageType3	ARexx default message template
DefIHead	ItemHeader	ARexx default item header
TelnetDMode	UBYTE	In telnetd I/O mode
dsock	int	Socket for telnetd session I/O
telnetdata	TelnetdPort *	Telnetd connection data

DM_FLAG defines:

DM_FLAG_DIRMAINT (0x01) -- full directory maintenance
DM_FLAG_CDROM (0x02) -- use CDROM temp directory
DM_FLAG_NODATA (0x04) -- hide CNet data files

MainPort

Header: include/cnet/control.h

System-global state structure. One per BBS instance, located via FindPort("cnetport"). Contains the Exec MsgPort, system statistics, configuration, subboard array, port pointers, semaphores, and more. Referenced via myp in door code.

Core Fields

Field	Type	Description
mp	MsgPort	Standard Exec message port (34 bytes)
portName	char[22]	Port name (typically `"cnetport"`)
LastOn	char[32]	Name of last user to log on
Nums[5]	long[]	System counters (see `NUMS_*`)
SAG[2][72]	ULONG[][]	System Activity Graph data
SAM[5][15]	long[][]	System Activity Monitor data
SAMDate[6]	IsDate[]	SAM date stamps; [1] = boot time
um[10]	long[]	General purpose longs for PFile use

NUMS Array Indices

Index	Define	Description
0	NUMS_CURRENT_ACCOUNTS	Total physical user accounts
1	NUMS_INUSE_ACCOUNTS	Currently active accounts
2	NUMS_HIGH_ID	Last assigned serial ID
3	NUMS_CALLS_TOTAL	Total calls ever
4	NUMS_CALLS_LOGGED	Currently logged-in users

Pointers and Resources

Field	Type	Description
PWindow	Window *	Control panel window
Subboard	SubboardType4 *	Array of all subboards
Key	KeyElement4 *	User key index array
IName	short *	Name-sorted index into Key[]
IPhone	short *	Phone-sorted index into Key[]
SubTitle	char *	Subboard title string
FirstCharge	ChargeSet *	Charge schedule linked list
ns	long	Number of allocated subboards

Task State

Field	Type	Description
toss_up	UBYTE	Toss/import task state (`TASK_UP_*`)
yank_up	UBYTE	Yank task state
mail_up	UBYTE	Mail task state
fileman_up	UBYTE	File task state
ftpd_up	UBYTE	FTPd state
serv_exit	UBYTE	Set TRUE to signal all servers to quit
OpenPfiles	long	Number of currently running doors

Semaphores

myp->SEM[0..18] -- critical section locks:

Index	Purpose
0	MainPort itself
1	User Key[], IName, Phone arrays
2	Upload/selection lists
3	Serial device
4	NUMS[1] (active account count)
5	Subboard data files and structures
7	Conference/join chat
8	Conference rooms
10	PFile locking
11	bbs.udata, bbs.cuser, userlist
12	Log files
13	LIST-type subboard items
14	Vote data
16	CopyCDRom() function
18	SAM data

Port Arrays

Field	Type	Description
AGC[32]	AccessGroup[]	Access group definitions
gc	NewConfig1	Global configuration
pc[101]	PortConfig[]	Per-port config (0-100)
PortZ[100]	PortData *[]	Per-port PortData pointers
CRoom[100]	Room *[]	Per-port room pointers
HiPort	short	Highest loaded port number
nPorts	short	Number of loaded ports

Extension

Field	Type	Description
MPE	MainPortExtension *	Extension structure

TASK_UP States

Value	Define	Meaning
0	TASK_UP_NOTRUNNING	Not running
1	TASK_UP_GUIOPEN	GUI is open
2	TASK_UP_HIDDEN	Totally hidden
3	TASK_UP_MENUFIED	Menu-fied
4	TASK_UP_ICONIFIED	Iconified
5	TASK_UP_RUNNING	Starting up (temporary)

MainPortExtension

Header: include/cnet/control.h

Extension structure for MainPort, accessed via myp->MPE.

Semaphores

myp->MPE->sem[0..19] -- additional critical section locks:

Index	Purpose
0	reload_text variable
1	Identd data (idd) insertion/removal
2	Global MailKill list
3	IMP list
4	Hostname/SPAM filter config
5	uumail directory (pauses mail-task)
6	Global MIME list
7	FTPd list / processes
8	TxProcess list
9-19	Unassigned

Key Fields

Field	Type	Description
reload_text	UBYTE	Set to 1 to trigger text/menu reload
newsman_up	UBYTE	News task state
newstask	Task *	News task pointer
idd	IdentdData *	Identd data linked list
MailKillList	List *	Mail kill pattern list
gc2	ConfigExtension	Extended configuration
IMPList	List	IMP (Inter-Module Process) list
statline	char *	Control stats line buffer
MailSem	SignalSemaphore *	Per-account mail semaphores
mimelist	MIMEContentType *	MIME type linked list
DCCList	List	DCC request list (IRC)
pubscreenname	char *	Public screen name for GUIs
FTPdList	List	Active FTPd process list
TxProcessList	List	File test/transform process list
telnetd_acnt	short	Auto-loaded telnetd port count

SubboardType4

Header: include/cnet/subs.h Size: ~696 bytes

Subboard/area configuration structure. Stored in myp->Subboard[] array and on disk in the subboard data files. Encompasses message bases, file areas, doors, text files, and subdirectories.

Identity and Paths

Offset	Field	Type	Size	Description
0	Title	char[]	60	Display title
60	SubDirName	char[]	75	GO keyword / subdirectory name
135	DataPath	char[]	95	Path to data files

Configuration

Offset	Field	Type	Description
230	Parts	long	Partition bitmap (bits 0-31)
234	SubOpIDs[6]	long[]	Subop user serial IDs
258	MRewardBytes	short	Upload reward: % of byte size
260	NRewardFiles	short	Upload reward: file credits per download
274	SubOpAccs[6]	short[]	Subop account numbers
286	Filler[6]	char[]	Shown during SCAN
294	Direct	UBYTE	Disk-exchange type
295	Vote	UBYTE	Non-sysop vote topic creation
296	FreeDays	short	Days until files become free
298	Subdirectory	UBYTE	Is this a subdirectory?
299	Closed	UBYTE	Subboard is closed

Access Control

Offset	Field	Type	Description
300	UnionFlags	long	Required user flags (all must match)
304	Access	long	Groups that may enter
308	PostAccess	long	Groups that may post
312	RespondAccess	long	Groups that may respond
316	UploadAccess	long	Groups that may upload
320	DownloadAccess	long	Groups that may download
324	ComputerTypes	long	Computer type filter
328	Hours	long	Restricted entry hours
340	Baud	long	Minimum baud rate
348	Gender	UBYTE	Gender restriction (0/'M'/'F')
349	AllowAliases	UBYTE	Alias permission

Accounting

Offset	Field	Type	Description
360	MDownBytes	short	% of download bytes to subtract
362	NDownFiles	short	Files to subtract per download
364	MTimeCredit	short	% of time to credit for uploads
366	MinFreeBytes	long	Minimum free space for uploads
383	SDownFiles	BYTE	Download charge file schedule
384	SDownBytes	BYTE	Download charge byte schedule

Tree Structure

Offset	Field	Type	Description
462	Parent	short	Physical number of parent list
464	Child	short	Physical number of child list (-1 if none)
466	Next	short	Physical number of next sibling (-1 if none)

Runtime State

Offset	Field	Type	Description
262	free0	FreeType *	Free-text hole list
424	count	ULONG	Item count (replaces _COUNT file)
456	Users	short	Current active users in this sub
458	Created	long	Creation timestamp
620	MaxItems	USHORT	Maximum items allowed
624	Item	ItemType3 *	In-memory item array
628	ihead	ItemHeader *	In-memory item header array
632	NewMess	MessageType3 *	New message array
636	sem	SignalSemaphore *	Subboard semaphore

Marker Field

The Marker field (offset 407) encodes the subboard type:

Value	Define	Meaning
0	MRK_MSG_BASE	Message base (subdirectories are also type 0 with `Subdirectory=1`)
1	MRK_FILE_TXFER	File transfer area
3	MRK_TEXT_DOOR	Text door
4	MRK_TEXT_FILE	Text file
5	MRK_CNETC_DOOR	CNetC (C language) door
6	MRK_AREXX_DOOR	ARexx door
7	MRK_ADOS_DOOR	AmigaDOS door
8	MRK_BBS_MACRO	BBS macro
9	MRK_DIRECT_COMMANDER	Direct commander

Flags in the Marker byte:

Bit 7 (0x80): MRK_SUBBOARD_KILLED -- deleted subboard
Bit 6 (0x40): MRK_SUBBOARD_ROOT -- root subboard

Use (Marker & MRK_SUBBOARD_BASE) (mask 0x3F) to extract the type.

ItemType3

Header: include/cnet/subs.h Size: 168 bytes

Item (post or file) metadata. Stored in the subboard's _Items data file and cached in SubboardType4.Item[].

Offset	Field	Type	Size	Description
0	Title	char[]	42	Item title
42	ByAccount	short	2	Uploader/poster's account number
44	ByID	long	4	Poster's serial ID
48	ToID	long	4	Recipient's serial ID
52	UsedDate	IsDate	6	Last access date
58	Part	short	2	Partition number
60	Downloads	long	4	Download count
64	ByteCharges	long	4	Byte charges applied
68	FileCharges	short	2	File charges applied
70	Private	UBYTE	1	Private item
71	DLnotifyULer	UBYTE	1	Notify uploader on download
73	Frozen	UBYTE	1	Item is frozen
74	Free	UBYTE	1	Free download
76	Favorite	UBYTE	1	Marked as favorite
77	Validated	UBYTE	1	Sysop validated
78	Finished	UBYTE	1	Upload is complete
79	Described	UBYTE	1	Has description
80	Transformed	UBYTE	1	Transform script has run
81	PurgeKill	UBYTE	1	Delete file when purged
82	MissingFile	UBYTE	1	File is offline
83	Integrity	BYTE	1	Test result (see `ITEMTYPE_INTEGRITY_*`)
84	AutoGrab	UBYTE	1	ASCII-grab when read
85	PurgeStatus	UBYTE	1	Purge behavior (see `ITEMTYPE_PURGE_*`)
86	ShowDate	IsDate	6	Display date
92	order	short	2	On-disk ordering
99	VirusChecked	UBYTE	1	Virus check complete
102	FilePayBack	short	2	File credits per download
104	BytePayBack	long	4	Byte credits per download
108	VoteLink	long	4	Linked vote serial number
116	ByteRewards	long	4	Total byte rewards given
120	FileRewards	long	4	Total file rewards given
124	ByteDownload	long	4	Byte credits required to download
128	FileDownload	short	2	File credits required to download
130	DLableFrom	IsDate	6	Download window start
136	DLableTo	IsDate	6	Download window end
142	PurgeOn	IsDate	6	Purge date
148	BestCPS	long	4	Best download CPS achieved
152	First	long	4	Seek position of post in _Text
156	Last	long	4	Seek position of last response
160	InfoX	long	4	Seek position in _Short file
164	InfoLen	long	4	Length of short description

ItemHeader

Header: include/cnet/subs.h Size: 34 bytes

Compact item header for scan/listing operations. Stored in the subboard's _Headers data file and cached in SubboardType4.ihead[].

Offset	Field	Type	Size	Description
0	Number	ULONG	4	Unique item number
4	Size	long	4	File size (0 = post, not file)
8	Responses	long	4	Response/reply count
12	PostDate	IsDate	6	Original post date
18	RespDate	IsDate	6	Date of latest response
24	TitleSort	UBYTE[]	9	Sort key
33	Killed	UBYTE	1	Deleted flag

HeaderType

Header: include/cnet/subs.h

Full message/post header. Contains author/recipient information, timestamps, and text location data.

Field	Type	Size	Description
ShowDate	IsDate	6	Display date
EditDate	IsDate	6	Last edit date
PostDate	IsDate	6	Original post date
ByAccount	short	2	Author's account number
NetAddress	char[]	52	Network address
UUCPnumber	long	4	UUCP message number
other	char[]	16	Reserved
By	char[]	36	Author display name
ByUser	char[]	24	Author handle
ByID	long	4	Author serial ID
To	char[]	36	Recipient display name
ToUser	char[]	24	Recipient handle
ToID	long	4	Recipient serial ID
ByNotParanoid	UBYTE	1	Show author's real name
ByAnonymous	UBYTE	1	Author is anonymous
ToAnonymous	UBYTE	1	Recipient is anonymous
Private	UBYTE	1	Private message
Imported	UBYTE	1	Imported from network
ByAlias	UBYTE	1	"By" is an alias
ToNotParanoid	UBYTE	1	Show recipient's real name
ToAlias	UBYTE	1	"To" is an alias
ToAccount	short	2	Recipient account number
Magic	ULONG	4	Alignment/validation magic
Number	ULONG	4	Unique message number
Text	long	4	Seek position in _Text
TextLen	long	4	Text length in bytes
Organ	char[]	31	Organization
Received	UBYTE	1	Message has been read
Next	long	4	Seek position of next response
Previous	long	4	Seek position of previous response

MessageType3

Header: include/cnet/subs.h

Message (response) record. Compact structure linking a response to its parent item.

Field	Type	Size	Description
ItemNumber	ULONG	4	Parent item's serial ID
Seek	long	4	Position in text file
ByID	long	4	Author serial ID
ToID	long	4	Recipient serial ID
Number	ULONG	4	Response serial number
PostDate	IsDate	6	Post date
Imported	UBYTE	1	Imported from network
IsFile	UBYTE	1	Response includes a file

BaseUser

Header: include/cnet/subs.h

Per-user-per-subboard membership data. Tracks whether a user has joined a subboard, their scan state, aliases, and new message tracking.

Field	Type	Size	Description
UID	long	4	User's serial ID (0 if never visited)
Joined	BYTE	1	Join state: -1=dropped, 0=sub default, 1=joined
Invited	BYTE	1	Invite state: -1=denied, 0=sub default, 1=invited
Sort	BYTE	1	Sort preference
scan_flags	UBYTE	1	Scan marking flags
LastMNew	IsDate	6	Last "new messages" check date
MNewDate	IsDate	6	New message reference date
Created	long	4	Subboard creation timestamp
Alias	char[]	22	User's alias for this subboard
Carbons	BYTE	1	Carbon copy: -1=no, 0=sub default, 1=yes
MNewSave	UBYTE	1	Save new message date flag
tome0	short	2	Messages to user count (persistent)
tome1	short	2	Messages to user count (this session)
expansion	char[]	12	Reserved

SelectType

Header: include/cnet/subs.h

File selection list entry. Used for both download selection lists (z->Select[]) and upload lists (z->Upload[]).

Field	Type	Size	Description
Size	long	4	File size
Title	char[]	32	Display title
Location	char[]	96	Full filesystem path
Base	short	2	Physical subboard number
SDownFiles	UBYTE	1	File charge schedule
SDownBytes	UBYTE	1	Byte charge schedule
temp_rem	UBYTE	1	Selected from DS list
CDROM	UBYTE	1	Copy from CDROM before download
FreeStuff	BYTE	1	Free file flag
AutoKill	UBYTE	1	Post-download action (see `ST_AKILL_*`)
ByteDownload	long	4	Byte credits to subtract
FileDownload	short	2	File credits to subtract
ADate	IsDate	6	Adopt date
Number	ULONG	4	Item number (for regular select) or ordinal (for upload)

CPort

Header: include/cnet/doors.h

Communication port structure created by CNet when launching a door. The door finds this via FindPort(argv[1]).

Offset	Field	Type	Size	Description
0	mport	MsgPort	34	Exec message port
34	align	short	2	Alignment padding
36	myp	MainPort *	4	Pointer to MainPort
40	zp	PortData *	4	Pointer to this port's PortData
44	ack	UBYTE	1	Door initialization acknowledgment
45	align2	UBYTE[]	3	Alignment padding

Usage: CNCL_DoorInit() calls CNC_InitContext(argv[1]) which finds the CPort and uses its myp and zp fields to populate the door's global pointers.

CMessage

Header: include/cnet/doors.h

IPC message passed between door programs and the BBS process via the CPort. The cnetc.library functions fill this structure internally.

Offset	Field	Type	Size	Description
0	cn_Message	Message	20	Standard Exec Message
20	arg1	ULONG	4	Command argument 1
24	arg2	ULONG	4	Command argument 2
28	arg3	ULONG	4	Command argument 3
32	arg4	ULONG	4	Command argument 4
36	result	ULONG	4	Return value
40	command	UBYTE	1	Command code (see `CMESS_CMD_*`)
41	align	UBYTE[]	3	Alignment padding

CMESS_CMD Command Codes

Value	Define	CNC_* Function
0	CMESS_CMD_SHUTDOWN	CNC_ShutDown
1	CMESS_CMD_PUTTEXT	CNC_PutText
2	CMESS_CMD_ENTERLINE	CNC_EnterLine
3	CMESS_CMD_ONEKEY	CNC_OneKey
4	CMESS_CMD_ENTERPASS	CNC_EnterPassword
5	CMESS_CMD_CCOMMANDS	CNC_CommonCommands
6	CMESS_CMD_READFILE	CNC_ReadFile
7	CMESS_CMD_SETDOING	CNC_SetDoing
8	CMESS_CMD_CALLEDITOR	CNC_CallEditor
9	CMESS_CMD_READGRAPHICS	CNC_ReadGraphics
10	CMESS_CMD_MAKEDATE	CNC_MakeDate
11	CMESS_CMD_READACCOUNT	CNC_ReadAccount
12	CMESS_CMD_SAVEACCOUNT	CNC_SaveAccount
13	CMESS_CMD_ADDCHARGE	CNC_AddCharge
14	CMESS_CMD_CHECKBALANCE	CNC_CheckBalance
15	CMESS_CMD_ENTERTEXT	CNC_EnterText
16	CMESS_CMD_CONFWAIT	CNC_ConferenceWait
17	CMESS_CMD_CHECKCHANGES	CNC_CheckChanges
18	CMESS_CMD_CONVERTACCESS	CNC_ConvertAccess
19	CMESS_CMD_GETFREE	CNC_GetFree
20	CMESS_CMD_FINDACCOUNT	CNC_FindAccount
21	CMESS_CMD_CHECKFLOW	CNC_CheckFlowControl
22	CMESS_CMD_LISTDIR	CNC_ListDir
24	CMESS_CMD_RNEXT	CNC_Rnext
25	CMESS_CMD_PARSECMDLINE	CNC_ParseCommandLine
26	CMESS_CMD_FINDCOMMAND	CNC_FindCommand
27	CMESS_CMD_READMSGPOINT	CNC_ReadMessagePoint
28	CMESS_CMD_EDITMESSAGE	CNC_EditMessage
29	CMESS_CMD_PREPEDITOR	(internal)
30	CMESS_CMD_FILESIZE	CNC_GrabFileSize
31	CMESS_CMD_WAITFORINPUT	CNC_WaitForInput
34	CMESS_CMD_PUTITEM	(ZPutItem via door)
35	CMESS_CMD_GETITEM	(ZGetItem via door)
39	CMESS_CMD_SELANDDLOAD	CNC_SelectAndDownload
40	CMESS_CMD_VDE	CNC_VisualDataEditor
41	CMESS_CMD_WRITELOG	CNC_OWriteLog
42	CMESS_CMD_SETMINFREE	CNC_ExtSetMinFree
43	CMESS_CMD_SETPROTO	CNC_ExtSetProtocol
44	CMESS_CMD_DLOAD	CNC_ExtDownload
45	CMESS_CMD_ULOAD	CNC_ExtUpload
56	CMESS_CMD_VDECLOSE	CNC_VDEclose
57	CMESS_CMD_VDEAPPLY	CNC_VDEapply
58	CMESS_CMD_WRITEUKEYS	CNC_WriteUKeys
59	CMESS_CMD_DOANSI	CNC_DoANSI
60	CMESS_CMD_DOANSIOUT	CNC_DoANSIOut
61	CMESS_CMD_INPUTSIGINIT	CNC_InputSignalInit
62	CMESS_CMD_INPUTSIGDISP	CNC_InputSignalDispose
63	CMESS_CMD_CHECKOLMS	CNC_CheckOLM
64	CMESS_CMD_PUTQMULT	CNC_PutQMult
65	CMESS_CMD_CHECKCARRIER	CNC_CheckCarrier
66	CMESS_CMD_MAILSEND	CNC_MailSend
67	CMESS_CMD_READLOG	CNC_ReadLog
68	CMESS_CMD_OPENDISPLAY	CNC_OpenDisplay
69	CMESS_CMD_GSETFILENOTE	CNC_GetSetFileNote
70	CMESS_CMD_EXTRACTFILE	CNC_ExtractFile
71	CMESS_CMD_DLOADSELECTED	CNC_DLoadSelect
72	CMESS_CMD_FINDFOREIGNAREA	CNC_FindForeignArea
73	CMESS_CMD_OUTSCAN	CNC_OutScan

CNetCContext

Header: include/cnet/doors.h

Context structure returned by CNC_InitContext(). Contains the essential pointers a door needs to interact with the BBS.

Field	Type	Description
myp	MainPort *	System-global state
z	PortData *	Current port's state
cport	CPort *	Communication port
replyp	MsgPort *	Library-allocated reply port
cmess	CMessage	CMessage for IPC communication

Usage: The door code rarely accesses context directly. Instead, it uses the global myp, z, and cport pointers set by CNCL_DoorInit().

SerPort4

Header: include/cnet/ports.h

Modem/serial port configuration. Stored in PortDataExtension.sp.

Field	Type	Size	Description
unit	long	4	Serial device unit number
flags	long	4	Serial device flags
idlebaud	short	2	Idle baud rate
escape	short	2	Escape character
answerpause	short	2	Answer pause (ms)
seconds	short	2	Timeout seconds
name	char[]	40	Device name
init1	char[]	50	Modem init string 1
ppass	char[]	11	Port password
init2	char[]	50	Modem init string 2
TrapHours	ULONG	4	Trap hours bitmask
MailHours	ULONG	4	Mail hours bitmask
hangup	char[]	21	Hangup command
dialout	char[]	21	Dial command
answer	char[]	21	Answer command
offhook	char[]	21	Off-hook command
terminal	char[]	50	Terminal program path
callerid	char[]	11	Caller ID prefix
ring	char[]	9	Ring string
connect	char[]	11	Connect string
termlink	char[]	21	TermLink configuration
null	UBYTE	1	Local terminal flag
IdleWho	char[]	21	WHO display text when idle
portflags	long	4	Port flags (see `SP_PF_*`)
expansion	BYTE[]	103	Reserved

Port flag defines:

SP_PF_SHOWONWHO (bit 0) -- show port on WHO display
SP_PF_TELNETD (bit 1) -- telnetd port
SP_PF_OFFCLOSE (bit 2) -- unload port after logoff

RangeContext

Header: include/cnet/ranges.h

State for iterating over a parsed range string. Used with the range functions in cnet4.library.

Field	Type	Size	Description
nparts	long	4	Number of part sets in range
parts[10][2]	long[][]	80	Min/max pairs for each set
set	long	4	Current set index
element	long	4	Current element value

Usage:

struct RangeContext rc;
long val = CNetFindRange("1-5,8,10-20", 1, 100, &rc);
while (val >= 0) {
    /* process val */
    val = CNetNextRange(&rc);
}

CNetFileEntry

Header: include/cnet/files.h

Linked list node for directory listings. Created by CNetReadDir() and related functions. Supports hierarchical directory trees with parent/child linkage.

Field	Type	Size	Description
DirHeader	CNetFileEntry *	4	Root directory entry (contains full path)
filename	char[]	256	File or directory name
size	LONG	4	File size in bytes
filenote	char[]	80	AmigaOS file comment
ChangedDate	IsDate	6	Last modification date
ftype	UBYTE	1	`CNFE_TYPE_FILE` (0) or `CNFE_TYPE_DIR` (1)
flag	LONG	4	User flag (CNet uses as deleted marker)
userdata	APTR	4	User-defined data pointer
parent	CNetFileEntry *	4	Parent directory node
child	CNetFileEntry *	4	First child (subdirectory contents)
prevfile	CNetFileEntry *	4	Previous entry in this directory
nextfile	CNetFileEntry *	4	Next entry in this directory

MailHeader4

Header: include/cnet/mail.h

Mail message header for CNet v4.12+. Used for reading, composing, and storing mail messages.

WARNING: This structure is reconstructed from usage patterns in ports.h and control.h. Field sizes and offsets are approximate. Use CNet library API functions for mail operations rather than direct struct access.

Field	Type	Size	Description
From	char[]	40	Sender name
To	char[]	40	Recipient name
Subject	char[]	80	Subject line
Date	IsDate	6	Send date
ReadDate	IsDate	6	Date message was read
Seek	long	4	Position in mail data file
Length	long	4	Message text length
Flags	ULONG	4	Mail flags
Number	ULONG	4	Unique message number
FromAccount	short	2	Sender account number
ToAccount	short	2	Recipient account number
FolderName	char[]	32	Containing folder name
UUCP_From	char[]	32	Sender's UUCP/Mail ID
UUCP_To	char[]	32	Recipient's UUCP/Mail ID
expansion	UBYTE[]	240	Reserved

NewMailFolder

Header: include/cnet/mail.h

Mail folder structure. Stored as a linked list in z->Folders.

NOTE: This structure is reconstructed. The actual binary layout may differ.

Field	Type	Size	Description
FolderName	char[]	64	Folder name
NumMessages	long	4	Message count in folder
temporary	UBYTE	1	Temporary folder flag
expansion	UBYTE[]	63	Reserved
next	NewMailFolder *	4	Next folder in list

ChargeSet / ChargeType

Header: include/cnet/charges.h

ChargeSet

Accounting schedule. Contains a 32x80 matrix of charge rates indexed by access group and charge type.

Field	Type	Size	Description
next	ChargeSet *	4	Next schedule in list
schedule	short	2	Schedule number
ACC[32][80]	short[][]	5120	Charge amounts: ACC[group][type]

ChargeType

Individual charge record in the queue.

Field	Type	Description
next	ChargeType *	Next charge in list
id	short	User account number
schedule	short	Schedule used
type	short	Charge type (see `CHARGETYPE_*`)
units	short	Number of units
fcredits	ULONG	File credits
bcredits	ULONG	Byte credits

CHARGETYPE Defines

Value	Define	Description
0	CHARGETYPE_MINBALANCE	Minimum balance charge
2	CHARGETYPE_LOGONSUCCESS	Successful logon
7	CHARGETYPE_CONNECTMINUTE	Per-minute connection
8	CHARGETYPE_OLM	Online message
10	CHARGETYPE_CONFERENCEMINUTE	Per-minute conference
24	CHARGETYPE_FEEDBACK	Feedback sent
25	CHARGETYPE_EMAILSENT	Email sent
26	CHARGETYPE_EMAILREAD	Email read
36	CHARGETYPE_SUBBDITEMREAD	Subboard item read
37	CHARGETYPE_SUBBDITEMPOST	Subboard item posted
38	CHARGETYPE_SUBBDITEMRESP	Subboard item response
41	CHARGETYPE_YANK	Yank operation
47-49	CHARGETYPE_FILEDLOAD1-3	File download (3 schedules)
53-55	CHARGETYPE_FILEUPLOAD1-3	File upload (3 schedules)

See charges.h for the complete list of 63 charge types.

CNUserCache

Header: include/cnet/users.h

User data cache entry. This is a read-only structure; modifying its fields directly will cause inconsistencies. Use UCacheRead(), UCacheWrite(), LockAccount(), and UnLockAccount() instead.

Field	Type	Description
udata	UserData *	Cached user data
account	short	Account number
accessed	LONG	CNet time of last access
next	CNUserCache *	Next cache entry

KeyElement4

Header: include/cnet/users.h

User index record stored in myp->Key[]. Provides fast lookup of user identity fields without loading full UserData records.

Field	Type	Size	Description
UUCP	char[]	11	Mail ID (10 chars + terminator)
IDNumber	long	4	Serial ID (high byte always 0)
phone1	long	4	Data phone area code
phone2	long	4	Data phone local number
Handle	char[]	21	Handle/nickname
RealName	char[]	26	Real name
PName	UBYTE	1	Name privacy flag
Access	BYTE	1	Access group

myp->IName[] and myp->IPhone[] are index arrays that map sorted order to positions in the Key[] array.

NewConfig1

Header: include/cnet/config.h

Global BBS configuration. Stored in myp->gc. Contains system identity, path settings, protocol/archiver/editor/FidoNet configuration, and many system-wide defaults.

Key Fields

Field	Type	Description
MySystemName	char[26]	BBS name
MySysopName	char[26]	Sysop name
MyLocation	char[26]	BBS location
MyPhoneNumber	char[20]	BBS phone number
MyBBSID	char[10]	BBS identifier
maxUserAccounts	long	Maximum user accounts
MaxOpenPfiles	long	Maximum concurrent doors
nsub	long	Total subboard count
ZIPpath	char[40]	Temp/work directory path
RAMpath	char[40]	RAM directory path
OLMpath	char[40]	OLM storage path
narc	long	Number of configured archivers
nproto	long	Number of configured protocols

The ConfigExtension structure (myp->MPE->gc2) contains additional settings for mail server, SMTP, news, telnetd, FTPd, and caching.

PortConfig

Header: include/cnet/control.h

Per-port configuration stored in myp->pc[0..100].

Field	Type	Size	Description
online	UBYTE	1	Port is loaded
open	UBYTE	1	Screen state (see `SCR_OPEN_*`)
check	UBYTE	1	Toggle button states (see `CHECKBIT_*`)
idle	UBYTE	1	Idle display mode
offline	UBYTE	1	Port loaded but modem offline
not_used	UBYTE	1	Reserved
bplanes	UBYTE	1	Bitplane count
lace	UBYTE	1	0=none, 1=24 line, 2=49 line
sizes[8]	USHORT[]	16	Window and zoom dimensions

Screen open modes: SCR_OPEN_PERMANENT (1), SCR_OPEN_FORCALL (2), SCR_OPEN_WORKBENCH (3)

Check bits: CHECKBIT_DOORSCLOSED (0), CHECKBIT_FILESCLOSED (1), CHECKBIT_MSGSCLOSED (2), CHECKBIT_NONUSER (3), CHECKBIT_SYSOPIN (4)

FreeType

Header: include/cnet/subs.h

Linked list node tracking free (reusable) space in subboard _Text data files. Managed by AllocText(), FreeText(), and SaveFree().

Field	Type	Size	Description
start	long	4	Byte offset in _Text file
length	long	4	Length of free block
next	FreeType *	4	Next free block

Other Structures

CNetPort (ports.h)

Display-only port information shown in WHO listings.

Field	Type	Size	Description
UserName	char[]	32	Display username
From	char[]	32	Location/city
Area	char[]	32	Current area
Action	char[]	32	Current action
Baud	ULONG	4	Connection speed
Logon	ULONG	4	Logon time
Port	USHORT	2	Port number
Access	USHORT	2	Access level

IMPStruct (control.h)

Inter-Module Process list entry. Stored in myp->MPE->IMPList.

Field	Type	Size	Description
node	Node	14	Exec list linkage
Name	char[]	80	IMP entry name
ProcessName	char[]	80	Associated process name
ProcessReply	char[]	80	Reply port name
dflag	UBYTE	1	Display flag
pflag	UBYTE	1	Process flag

GETUSER Codes (getusers.h)

Constants for the ARexx GETUSER command, specifying which structure and data type to query.

Structure selectors (arg 1):

Value	Define	Structure
1	GU1_PORTDATA	PortData
2	GU1_MAINPORT	MainPort
3	GU1_PORTDATA_EXT	PortDataExtension
4	GU1_MAINPORT_EXT	MainPortExtension

Type selectors (arg 2):

Value	Define	C Type
1	GU2_CHAR	char / BYTE / UBYTE
2	GU2_SHORT	short / USHORT
3	GU2_STRING	char[]
4	GU2_LONG	long / ULONG
5	GU2_DATE	IsDate
6	GU2_CHAR_PTR	char *

ENTERLINE Flags (io.h)

Input flags for CNC_EnterLine() / CEnterLine():

Flag	Value	Description
ELINE_NONE	0x0	No special flags
ELINE_ALLCAPS	0x00001	Force uppercase
ELINE_FILENAME	0x00002	Filename-safe characters
ELINE_USEINBUFF	0x00004	Pre-fill with InBuffer content
ELINE_NOLEADSPACE	0x00008	Strip leading spaces
ELINE_CAPWORDSTART	0x00010	Capitalize word starts
ELINE_RESTWORDLOWER	0x00020	Lowercase rest of words
ELINE_NUMBERSONLY	0x00040	Digits only
ELINE_INPUTBOX	0x00080	Draw input box
ELINE_ALLOWMCI	0x00100	Allow MCI in input
ELINE_HANDLESPECIAL	0x00200	Handle special characters
ELINE_XSLASHSTART	0x00400	Disallow leading slash
ELINE_XBKSPACESTART	0x00800	Disallow leading backspace
ELINE_NOOLMS	0x01000	Suppress OLM display
ELINE_ALLOWCHAT	0x02000	Allow chat interruption
ELINE_NOSPACES	0x04000	Disallow spaces
ELINE_NOCURSORMOVE	0x08000	Disable cursor movement
ELINE_NOSLASHES	0x10000	Disallow slashes
ELINE_NOPATH	0x20000	Disallow path separators
ELINE_ALPHAONLY	0x40000	Letters only

FilesExpand file tree

structures.md

Latest commit

History

structures.md

File metadata and controls

CNet 5 SDK Structure Reference

Table of Contents

IsDate

UserData

Privs

ABits Bitfield

ABits2 Bitfield

AccessGroup

PortData

Current Session State (offsets 0-67)

User Data (offsets 68-1411)

Navigation State

I/O Flags (various offsets)

Buffers

Editor State

Door Use

Subboard Context

Mail State

System Pointers

Extension

PortDataExtension

MainPort

Core Fields

NUMS Array Indices

Pointers and Resources

Task State

Semaphores

Port Arrays

Extension

TASK_UP States

MainPortExtension

Semaphores

Key Fields

SubboardType4

Identity and Paths

Configuration

Access Control

Accounting

Tree Structure

Runtime State

Marker Field

ItemType3

ItemHeader

HeaderType

MessageType3

BaseUser

SelectType

CPort

CMessage

CMESS_CMD Command Codes

CNetCContext

SerPort4

RangeContext

CNetFileEntry

MailHeader4

NewMailFolder

ChargeSet / ChargeType

ChargeSet

ChargeType

CHARGETYPE Defines

CNUserCache

KeyElement4

NewConfig1

Key Fields

PortConfig

FreeType

Other Structures

CNetPort (ports.h)

IMPStruct (control.h)

GETUSER Codes (getusers.h)

ENTERLINE Flags (io.h)