364 lines
9.9 KiB
C++
364 lines
9.9 KiB
C++
// This may look like C code, but it is really -*- C++ -*-
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// ------------------------------------------------------------------
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// The Goldware Library
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// Copyright (C) 1990-1999 Odinn Sorensen
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// Copyright (C) 1999-2000 Alexander S. Aganichev
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// ------------------------------------------------------------------
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this program; if not, write to the Free
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// Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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// MA 02111-1307, USA
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// ------------------------------------------------------------------
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// $Id$
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// ------------------------------------------------------------------
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// FrontDoor Nodelist Indexing.
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// Derived from code kindly provided by Scott Dudley.
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// ------------------------------------------------------------------
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#ifndef __gftnnlfd_h
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#define __gftnnlfd_h
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// ------------------------------------------------------------------
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#include <gftnnl.h>
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// ------------------------------------------------------------------
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#if defined(GOLD_CANPACK)
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#pragma pack(1)
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#endif
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struct _FDHdr {
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word rsvd1;
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byte rsvd2;
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word master_idx;
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};
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// ------------------------------------------------------------------
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// The four-byte header at the beginning of each Btree block
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struct _FDInf {
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char nodes;
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word index;
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char rsvd[2];
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};
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// ------------------------------------------------------------------
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// Layout of first record
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struct _FDCtl {
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_FDInf inf;
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_FDHdr hdr;
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char stuff[246];
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byte unknown;
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char nl_ext[3];
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};
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// ------------------------------------------------------------------
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// Masks for the nlofs member
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const ulong IN_FDNODE = 0x01000000UL; // Data in FDNODE.FD
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const ulong IN_FDNET = 0x10000000UL; // Data in FDNET.PVT
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const ulong IN_FDPOINT = 0x20000000UL; // Data in FDPOINT.PVT
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// ------------------------------------------------------------------
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struct _FDGdx {
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dword nlofs;
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word block_num;
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};
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// ------------------------------------------------------------------
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// A FrontDoor USERLIST.FDX record
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struct _FDUdx {
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dword nlofs; // Index into raw nodelist.
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word block_num; // Block number (used in index recs only)
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word rsvd1; // Unknown
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byte rsvd2; // Unknown - always '\x18'
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char name[15]; // Space-padded, uppercase
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byte zone_hi; // MSB of zone
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byte zone_lo; // LSB of zone
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byte net_hi; // MSB of net
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byte net_lo; // LSB of net
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byte node_hi; // MSB of node
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byte node_lo; // LSB of node
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byte point_hi; // MSB of point
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byte point_lo; // LSB of point
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byte type; // See TYPE_XXX
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};
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// ------------------------------------------------------------------
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// Structure of a B-Tree data block in USERLIST.FDX. This structure
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// is always 1061 bytes long, and the file length is always a
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// multiple of this
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struct _FDUdb {
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_FDInf inf;
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_FDUdx udx[32];
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};
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// ------------------------------------------------------------------
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// A FrontDoor NODELIST.FDX record
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struct _FDFdx {
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dword nlofs; // Index into raw nodelist.
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word block_num; // Block number (used in index recs only)
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word rsvd1; // Unknown
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byte rsvd2; // Unknown - always '\x0e'
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byte zone_hi; // MSB of zone
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byte zone_lo; // LSB of zone
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byte net_hi; // MSB of net
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byte net_lo; // LSB of net
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byte node_hi; // MSB of node
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byte node_lo; // LSB of node
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byte point_hi; // MSB of point
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byte point_lo; // LSB of point
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word host_route; // Net# for host routng, or 0 if none
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word hub_route; // Hub# for hub routing, or 0 if none
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byte type; // See TYPE_XXX
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byte sentinel; // Always 0xFF
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};
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// ------------------------------------------------------------------
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// Structure of a B-Tree data block in NODELIST.FDX. This structure
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// is always 741 bytes long, and the file length is always a multiple
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// of this
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struct _FDFdb {
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_FDInf inf;
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_FDFdx fdx[32];
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};
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// ------------------------------------------------------------------
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// B-Tree common data block with union for convenience
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struct _FDBlk {
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_FDInf info;
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union {
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_FDUdx name[32];
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_FDFdx addr[32];
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} node;
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};
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// ------------------------------------------------------------------
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// The private Nodelist Database (FDNODE.FDA) has the following record
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// format. Note that the char[] fields are in Pascal fashion. The first
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// byte is the length byte. The actual string starts at [1] and the
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// string is not NUL terminated.
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// Status
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#define ISZC 1
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#define ISRC 2
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#define ISNC 3
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#define ISHUB 4
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#define ISPVT 5
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#define ISHOLD 6
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#define ISDOWN 7
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#define ISPOINT 9
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// Capability flags
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#define CMflag 0x00000002L
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#define MOflag 0x00000004L
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#define HSTflag 0x00000008L
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#define H96flag 0x00000010L
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#define PEPflag 0x00000020L
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#define MAXflag 0x00000040L
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#define XXflag 0x00000080L
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#define XBflag 0x00000100L
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#define XRflag 0x00000200L
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#define XPflag 0x00000400L
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#define XWflag 0x00000800L
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#define MNPflag 0x00001000L
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#define HST14flag 0x00002000L
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#define V32flag 0x00004000L
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#define V33flag 0x00008000L
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#define V34flag 0x00010000L
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#define V42flag 0x00020000L
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#define XCflag 0x00040000L
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#define XAflag 0x00080000L
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#define V42bflag 0x00100000L
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#define V32bflag 0x00200000L
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#define HST16flag 0x00400000L
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#define LOflag 0x00800000L
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#define ZYXflag 0x01000000L
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#define UISDNAflag 0x02000000L
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#define UISDNBflag 0x04000000L
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#define UISDNCflag 0x08000000L
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#define FAXflag 0x10000000L
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// MaxBaud field
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#define ISBAUD300 2
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#define ISBAUD1200 4
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#define ISBAUD2400 5
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#define ISBAUD4800 6
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#define ISBAUD7200 10
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#define ISBAUD9600 7
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#define ISBAUD12000 11
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#define ISBAUD14400 12
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#define ISBAUD16800 13
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#define ISBAUD19200 14
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#define ISBAUD38400 15
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#define ISBAUD57600 16
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#define ISBAUD64000 17
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#define ISBAUD76800 18
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#define ISBAUD115200 19
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// Record structure
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struct _FDFdn {
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long erased; // Used to signal erased status
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byte status; // Zone, host, hub, etc.
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word node; // Network address
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word net; //
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word zone; //
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word point; //
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word routnode; // Default routing within zone
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word routnet; //
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word cost; // Cost per minute for system
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long capability; // Capability flags
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byte maxbaud; // Maximum baud rate
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char name[31]; // Name of system
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char telephone[41]; // Raw telephone number
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char location[41]; // Location of system
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char user[37]; // SysOp name
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char selecttag[4]; // Group field
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};
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// ------------------------------------------------------------------
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//
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struct _FDStk {
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uint blockno;
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uint block_num;
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int maxnodes;
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int node;
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};
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// ------------------------------------------------------------------
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struct _FDstate {
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uint depth;
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_FDStk stack[8];
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int blockno;
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int node;
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};
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#if defined(GOLD_CANPACK)
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#pragma pack()
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#endif
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// ------------------------------------------------------------------
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class ftn_frontdoor_nodelist_index : public ftn_nodelist_index_base {
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bool is_intermail;
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int fdfd;
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int nfd;
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int pfd;
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int ppfd;
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int ufd;
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int xfd;
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_FDCtl ctl;
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_FDBlk block;
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uint blocksize;
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uint blockno;
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uint maxblockno;
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uint lastblockno;
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int node;
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_FDStk stack[8];
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uint depth;
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_FDstate state;
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char nodelist[13];
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long nodelistoffset;
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char searchname[16];
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ftn_addr searchaddr;
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const _FDUdx& namerec() const;
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const _FDFdx& addrrec() const;
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const _FDGdx& noderec() const;
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void getaddr(ftn_addr& addr) const;
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void getblock();
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int namecmp() const;
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int addrcmp() const;
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void getstatus(char* status, int type) const;
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void fetchdata();
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void getnodedata();
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void push();
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void pop();
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bool prevnode();
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bool nextnode();
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void compare() { exactmatch = not (namebrowse ? namecmp() : addrcmp()); }
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bool search();
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#ifdef DEBUG
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void printnode() const;
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#endif
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public:
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ftn_frontdoor_nodelist_index();
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virtual ~ftn_frontdoor_nodelist_index();
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bool can_browse_name() const { return true; }
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bool can_browse_address() const { return true; }
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bool open();
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void close();
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bool find(const char* name);
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bool find(const ftn_addr& addr);
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bool previous();
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bool next();
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void first();
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void last();
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void push_state();
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void pop_state();
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const char* index_name() const;
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const char* nodelist_name() const;
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};
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// ------------------------------------------------------------------
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#endif
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// ------------------------------------------------------------------
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