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jam.cpp
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// LoraBBS Version 2.99 Free Edition
// Copyright (C) 1987-98 Marco Maccaferri
//
// 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 "_ldefs.h"
#include "msgbase.h"
#define MAX_TEXT 2048
JAM::JAM ()
{
fdHdr = fdJdt = fdJdx = -1;
pSubfield = NULL;
Current = Id = 0L;
}
JAM::JAM (PSZ pszName)
{
fdHdr = fdJdt = fdJdx = -1;
pSubfield = NULL;
Current = Id = 0L;
Open (pszName);
}
JAM::~JAM ()
{
Close ();
}
USHORT JAM::Add ()
{
return (Add (Text));
}
USHORT JAM::Add (class TMsgBase *MsgBase)
{
New ();
strcpy (From, MsgBase->From);
strcpy (To, MsgBase->To);
strcpy (Subject, MsgBase->Subject);
strcpy (FromAddress, MsgBase->FromAddress);
strcpy (ToAddress, MsgBase->ToAddress);
Written.Day = MsgBase->Written.Day;
Written.Month = MsgBase->Written.Month;
Written.Year = MsgBase->Written.Year;
Written.Hour = MsgBase->Written.Hour;
Written.Minute = MsgBase->Written.Minute;
Written.Second = MsgBase->Written.Second;
Arrived.Day = MsgBase->Arrived.Day;
Arrived.Month = MsgBase->Arrived.Month;
Arrived.Year = MsgBase->Arrived.Year;
Arrived.Hour = MsgBase->Arrived.Hour;
Arrived.Minute = MsgBase->Arrived.Minute;
Arrived.Second = MsgBase->Arrived.Second;
Reply = MsgBase->Reply;
Original = MsgBase->Original;
Crash = MsgBase->Crash;
Direct = MsgBase->Direct;
FileAttach = MsgBase->FileAttach;
FileRequest = MsgBase->FileRequest;
Hold = MsgBase->Hold;
Immediate = MsgBase->Immediate;
Intransit = MsgBase->Intransit;
KillSent = MsgBase->KillSent;
Local = MsgBase->Local;
Private = MsgBase->Private;
ReceiptRequest = MsgBase->ReceiptRequest;
Received = MsgBase->Received;
Sent = MsgBase->Sent;
return (Add (MsgBase->Text));
}
USHORT JAM::Add (class TCollection &MsgText)
{
USHORT RetVal = FALSE;
ULONG ulMsg = Highest () + 1L;
PSZ pszText, pszSign = HEADERSIGNATURE;
JAMIDXREC jamIdx;
JAMSUBFIELD jamSubfield;
struct tm mktm;
RetVal = TRUE;
memset (&jamHdr, 0, sizeof (JAMHDR));
jamHdr.Signature[0] = pszSign[0];
jamHdr.Signature[1] = pszSign[1];
jamHdr.Signature[2] = pszSign[2];
jamHdr.Signature[3] = pszSign[3];
jamHdr.Revision = CURRENTREVLEV;
jamHdr.MsgNum = ulMsg;
mktm.tm_year = Written.Year - 1900;
mktm.tm_mon = Written.Month - 1;
mktm.tm_mday = Written.Day;
mktm.tm_hour = Written.Hour;
mktm.tm_min = Written.Minute;
mktm.tm_sec = Written.Second;
mktm.tm_wday = 0;
mktm.tm_yday = 0;
mktm.tm_isdst = 0;
jamHdr.DateWritten = mktime (&mktm);
mktm.tm_year = Arrived.Year - 1900;
mktm.tm_mon = Arrived.Month - 1;
mktm.tm_mday = Arrived.Day;
mktm.tm_hour = Arrived.Hour;
mktm.tm_min = Arrived.Minute;
mktm.tm_sec = Arrived.Second;
mktm.tm_wday = 0;
mktm.tm_yday = 0;
mktm.tm_isdst = 0;
jamHdr.DateProcessed = mktime (&mktm);
jamHdr.Attribute |= (Crash == TRUE) ? MSG_CRASH : 0;
jamHdr.Attribute |= (Direct == TRUE) ? MSG_DIRECT : 0;
jamHdr.Attribute |= (FileAttach == TRUE) ? MSG_FILEATTACH : 0;
jamHdr.Attribute |= (FileRequest == TRUE) ? MSG_FILEREQUEST : 0;
jamHdr.Attribute |= (Hold == TRUE) ? MSG_HOLD : 0;
jamHdr.Attribute |= (Immediate == TRUE) ? MSG_IMMEDIATE : 0;
jamHdr.Attribute |= (Intransit == TRUE) ? MSG_INTRANSIT : 0;
jamHdr.Attribute |= (KillSent == TRUE) ? MSG_KILLSENT : 0;
jamHdr.Attribute |= (Local == TRUE) ? MSG_LOCAL : 0;
jamHdr.Attribute |= (Private == TRUE) ? MSG_PRIVATE : 0;
jamHdr.Attribute |= (ReceiptRequest == TRUE) ? MSG_RECEIPTREQ : 0;
jamHdr.Attribute |= (Received == TRUE) ? MSG_READ : 0;
jamHdr.Attribute |= (Sent == TRUE) ? MSG_SENT : 0;
jamHdr.ReplyTo = Original;
jamHdr.ReplyNext = Reply;
lseek (fdHdr, 0L, SEEK_END);
jamIdx.UserCRC = 0;
jamIdx.HdrOffset = tell (fdHdr);
lseek (fdJdx, 0L, SEEK_END);
write (fdJdx, &jamIdx, sizeof (JAMIDXREC));
write (fdHdr, &jamHdr, sizeof (JAMHDR));
jamSubfield.HiID = 0;
jamSubfield.LoID = JAMSFLD_SENDERNAME;
jamSubfield.DatLen = strlen (From) + 1;
jamHdr.SubfieldLen += jamSubfield.DatLen + sizeof (JAMBINSUBFIELD);
write (fdHdr, &jamSubfield, sizeof (JAMBINSUBFIELD));
write (fdHdr, From, strlen (From) + 1);
if (To[0]) {
jamSubfield.LoID = JAMSFLD_RECVRNAME;
jamSubfield.DatLen = strlen (To) + 1;
jamHdr.SubfieldLen += jamSubfield.DatLen + sizeof (JAMBINSUBFIELD);
write (fdHdr, &jamSubfield, sizeof (JAMBINSUBFIELD));
write (fdHdr, To, strlen (To) + 1);
}
jamSubfield.LoID = JAMSFLD_SUBJECT;
jamSubfield.DatLen = strlen (Subject) + 1;
jamHdr.SubfieldLen += jamSubfield.DatLen + sizeof (JAMBINSUBFIELD);
write (fdHdr, &jamSubfield, sizeof (JAMBINSUBFIELD));
write (fdHdr, Subject, strlen (Subject) + 1);
if (FromAddress[0] != '\0') {
jamSubfield.LoID = JAMSFLD_OADDRESS;
jamSubfield.DatLen = strlen (FromAddress) + 1;
jamHdr.SubfieldLen += jamSubfield.DatLen + sizeof (JAMBINSUBFIELD);
write (fdHdr, &jamSubfield, sizeof (JAMBINSUBFIELD));
write (fdHdr, FromAddress, strlen (FromAddress) + 1);
}
if (ToAddress[0] != '\0') {
jamSubfield.LoID = JAMSFLD_DADDRESS;
jamSubfield.DatLen = strlen (ToAddress) + 1;
jamHdr.SubfieldLen += jamSubfield.DatLen + sizeof (JAMBINSUBFIELD);
write (fdHdr, &jamSubfield, sizeof (JAMBINSUBFIELD));
write (fdHdr, ToAddress, strlen (ToAddress) + 1);
}
lseek (fdHdr, 0L, SEEK_SET);
read (fdHdr, &jamHdrInfo, sizeof (JAMHDRINFO));
jamHdrInfo.ActiveMsgs++;
lseek (fdHdr, 0L, SEEK_SET);
write (fdHdr, &jamHdrInfo, sizeof (JAMHDRINFO));
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
write (fdHdr, &jamHdr, sizeof (JAMHDR));
if (RetVal == TRUE) {
Id = jamHdr.MsgNum;
lseek (fdJdt, 0L, SEEK_END);
jamHdr.TxtOffset = tell (fdJdt);
jamHdr.TxtLen = 0;
if ((pszText = (PSZ)MsgText.First ()) != NULL)
do {
write (fdJdt, pszText, strlen (pszText));
jamHdr.TxtLen += strlen (pszText);
write (fdJdt, "\r\n", 2);
jamHdr.TxtLen += 2;
} while ((pszText = (PSZ)MsgText.Next ()) != NULL);
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
write (fdHdr, &jamHdr, sizeof (JAMHDR));
WriteHeader (ulMsg);
}
return (RetVal);
}
VOID JAM::Close ()
{
if (fdJdx != -1)
close (fdJdx);
if (fdJdt != -1)
close (fdJdt);
if (fdHdr != -1)
close (fdHdr);
if (pSubfield != NULL)
free (pSubfield);
fdHdr = fdJdt = fdJdx = -1;
pSubfield = NULL;
Id = 0L;
}
USHORT JAM::Delete (ULONG ulMsg)
{
USHORT RetVal = FALSE;
JAMIDXREC jamIdx;
if (ReadHeader (ulMsg) == TRUE) {
jamHdr.Attribute |= MSG_DELETED;
lseek (fdJdx, tell (fdJdx) - sizeof (jamIdx), SEEK_SET);
if (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
write (fdHdr, &jamHdr, sizeof (JAMHDR));
lseek (fdHdr, 0L, SEEK_SET);
read (fdHdr, &jamHdrInfo, sizeof (JAMHDRINFO));
jamHdrInfo.ActiveMsgs--;
lseek (fdHdr, 0L, SEEK_SET);
write (fdHdr, &jamHdrInfo, sizeof (JAMHDRINFO));
RetVal = TRUE;
}
}
return (RetVal);
}
USHORT JAM::GetHWM (ULONG &ulMsg)
{
ulMsg = 0L;
return (FALSE);
}
ULONG JAM::Highest ()
{
ULONG RetVal = 0L;
JAMIDXREC jamIdx;
if (jamHdrInfo.ActiveMsgs > 0L) {
lseek (fdJdx, filelength (fdJdx) - sizeof (jamIdx), SEEK_SET);
if (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
RetVal = jamHdr.MsgNum;
}
}
Id = RetVal;
return (RetVal);
}
USHORT JAM::Lock (ULONG ulTimeout)
{
ulTimeout = ulTimeout;
return (TRUE);
}
ULONG JAM::Lowest ()
{
ULONG RetVal = 0L;
JAMIDXREC jamIdx;
if (jamHdrInfo.ActiveMsgs > 0L) {
lseek (fdJdx, 0L, SEEK_SET);
if (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
RetVal = jamHdr.MsgNum;
}
}
Id = RetVal;
return (RetVal);
}
ULONG JAM::MsgnToUid (ULONG ulMsg)
{
ULONG i = 1L;
JAMIDXREC jamIdx;
if (fdJdx != -1 && fdHdr != -1 && ulMsg > 0L && ulMsg <= jamHdrInfo.ActiveMsgs) {
lseek (fdJdx, 0L, SEEK_SET);
while (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
if (!(jamHdr.Attribute & MSG_DELETED)) {
if (i == ulMsg) {
ulMsg = jamHdr.MsgNum;
break;
}
i++;
}
}
}
if (jamHdrInfo.ActiveMsgs == 0L)
ulMsg = 0L;
return (ulMsg);
}
VOID JAM::New ()
{
From[0] = To[0] = Subject[0] = '\0';
Crash = Direct = FileAttach = FileRequest = Hold = Immediate = FALSE;
Intransit = KillSent = Local = Private = ReceiptRequest = Received = FALSE;
Sent = 0;
memset (&Written, 0, sizeof (Written));
memset (&Arrived, 0, sizeof (Arrived));
FromAddress[0] = ToAddress[0] = '\0';
Original = Reply = 0L;
Text.Clear ();
}
USHORT JAM::Next (ULONG &ulMsg)
{
USHORT RetVal = FALSE, MayBeNext = FALSE;
JAMIDXREC jamIdx;
if (jamHdrInfo.ActiveMsgs > 0L) {
// --------------------------------------------------------------------
// The first attempt to retrive the next message number suppose that
// the file pointers are located after the current message number.
// Usually this is the 99% of the situations because the messages are
// often readed sequentially.
// --------------------------------------------------------------------
if (tell (fdJdx) >= sizeof (jamIdx))
lseek (fdJdx, tell (fdJdx) - sizeof (jamIdx), SEEK_SET);
do {
if (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
if (MayBeNext == TRUE) {
if (!(jamHdr.Attribute & MSG_DELETED) && jamHdr.MsgNum > ulMsg) {
ulMsg = jamHdr.MsgNum;
RetVal = TRUE;
}
}
if (!(jamHdr.Attribute & MSG_DELETED) && jamHdr.MsgNum == ulMsg)
MayBeNext = TRUE;
}
} while (RetVal == FALSE && tell (fdJdx) < filelength (fdJdx));
if (RetVal == FALSE && MayBeNext == FALSE) {
// --------------------------------------------------------------------
// It seems that the file pointers are not located where they should be
// so our next attempt is to scan the database from the beginning to
// find the next message number.
// --------------------------------------------------------------------
lseek (fdJdx, 0L, SEEK_SET);
do {
if (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
if (!(jamHdr.Attribute & MSG_DELETED) && jamHdr.MsgNum > ulMsg) {
ulMsg = jamHdr.MsgNum;
RetVal = TRUE;
}
}
} while (RetVal == FALSE && tell (fdJdx) < filelength (fdJdx));
}
Id = 0L;
if (RetVal == TRUE)
Id = ulMsg;
}
return (RetVal);
}
ULONG JAM::Number ()
{
return (jamHdrInfo.ActiveMsgs);
}
USHORT JAM::Open (PSZ pszName)
{
USHORT RetVal = FALSE;
CHAR File[128];
PSZ Signature = HEADERSIGNATURE;
sprintf (File, "%s%s", pszName, EXT_HDRFILE);
if ((fdHdr = sopen (File, O_RDWR|O_BINARY|O_CREAT, SH_DENYNO, S_IREAD|S_IWRITE)) != -1) {
if (read (fdHdr, &jamHdrInfo, sizeof (JAMHDRINFO)) != sizeof (JAMHDRINFO)) {
memset (&jamHdrInfo, 0, sizeof (JAMHDRINFO));
jamHdrInfo.Signature[0] = Signature[0];
jamHdrInfo.Signature[1] = Signature[1];
jamHdrInfo.Signature[2] = Signature[2];
jamHdrInfo.Signature[3] = Signature[3];
jamHdrInfo.DateCreated = time (NULL);
jamHdrInfo.BaseMsgNum = 1;
lseek (fdHdr, 0L, SEEK_SET);
write (fdHdr, &jamHdrInfo, sizeof (JAMHDRINFO));
}
if (jamHdrInfo.Signature[0] == Signature[0] && jamHdrInfo.Signature[1] == Signature[1] && jamHdrInfo.Signature[2] == Signature[2] && jamHdrInfo.Signature[3] == Signature[3]) {
sprintf (File, "%s%s", pszName, EXT_TXTFILE);
fdJdt = sopen (File, O_RDWR|O_BINARY|O_CREAT, SH_DENYNO, S_IREAD|S_IWRITE);
sprintf (File, "%s%s", pszName, EXT_IDXFILE);
fdJdx = sopen (File, O_RDWR|O_BINARY|O_CREAT, SH_DENYNO, S_IREAD|S_IWRITE);
RetVal = TRUE;
strcpy (BaseName, pszName);
}
else {
close (fdHdr);
fdHdr = -1;
}
}
else
memset (&jamHdrInfo, 0, sizeof (JAMHDRINFO));
Id = 0L;
return (RetVal);
}
VOID JAM::Pack ()
{
int fdnHdr, fdnJdx, fdnJdt;
USHORT ToRead, Readed;
CHAR File[128], New[128], *Subfield, *Temp;
JAMIDXREC jamIdx;
sprintf (File, "%s%s", BaseName, ".$dr");
fdnHdr = sopen (File, O_RDWR|O_BINARY|O_CREAT|O_TRUNC, SH_DENYNO, S_IREAD|S_IWRITE);
sprintf (File, "%s%s", BaseName, ".$dt");
fdnJdt = sopen (File, O_RDWR|O_BINARY|O_CREAT|O_TRUNC, SH_DENYNO, S_IREAD|S_IWRITE);
sprintf (File, "%s%s", BaseName, ".$dx");
fdnJdx = sopen (File, O_RDWR|O_BINARY|O_CREAT|O_TRUNC, SH_DENYNO, S_IREAD|S_IWRITE);
if (fdnHdr != -1 && fdnJdt != -1 && fdnJdx != -1) {
lseek (fdHdr, 0L, SEEK_SET);
if (read (fdHdr, &jamHdrInfo, sizeof (JAMHDRINFO)) == sizeof (JAMHDRINFO)) {
write (fdnHdr, &jamHdrInfo, sizeof (JAMHDRINFO));
while (read (fdHdr, &jamHdr, sizeof (JAMHDR)) == sizeof (JAMHDR)) {
if (jamHdr.Attribute & MSG_DELETED) {
if (jamHdr.SubfieldLen > 0L)
lseek (fdHdr, jamHdr.SubfieldLen, SEEK_CUR);
}
else {
jamIdx.UserCRC = 0;
jamIdx.HdrOffset = tell (fdnHdr);
write (fdnJdx, &jamIdx, sizeof (JAMIDXREC));
lseek (fdJdt, jamHdr.TxtOffset, SEEK_SET);
jamHdr.TxtOffset = tell (fdnJdt);
write (fdnHdr, &jamHdr, sizeof (JAMHDR));
if (jamHdr.SubfieldLen > 0L) {
if ((Subfield = (CHAR *)malloc ((size_t)(jamHdr.SubfieldLen + 1))) != NULL) {
read (fdHdr, Subfield, (size_t)jamHdr.SubfieldLen);
write (fdnHdr, Subfield, (size_t)jamHdr.SubfieldLen);
free (Subfield);
}
}
if ((Temp = (CHAR *)malloc (MAX_TEXT)) != NULL) {
do {
if ((ToRead = MAX_TEXT) > jamHdr.TxtLen)
ToRead = (USHORT)jamHdr.TxtLen;
Readed = (USHORT)read (fdJdt, Temp, ToRead);
write (fdnJdt, Temp, Readed);
jamHdr.TxtLen -= Readed;
} while (jamHdr.TxtLen > 0);
free (Temp);
}
}
}
}
close (fdnHdr);
close (fdnJdt);
close (fdnJdx);
fdnHdr = fdnJdt = fdnJdx = -1;
close (fdHdr);
close (fdJdt);
close (fdJdx);
fdHdr = fdJdt = fdJdx = -1;
sprintf (File, "%s%s", BaseName, ".$dr");
sprintf (New, "%s%s", BaseName, EXT_HDRFILE);
unlink (New);
rename (File, New);
sprintf (File, "%s%s", BaseName, ".$dt");
sprintf (New, "%s%s", BaseName, EXT_TXTFILE);
unlink (New);
rename (File, New);
sprintf (File, "%s%s", BaseName, ".$dx");
sprintf (New, "%s%s", BaseName, EXT_IDXFILE);
unlink (New);
rename (File, New);
Open (BaseName);
}
if (fdnHdr != -1)
close (fdnHdr);
sprintf (File, "%s%s", BaseName, ".$dr");
unlink (File);
if (fdnJdt != -1)
close (fdnJdt);
sprintf (File, "%s%s", BaseName, ".$dt");
unlink (File);
if (fdnJdx != -1)
close (fdnJdx);
sprintf (File, "%s%s", BaseName, ".$dx");
unlink (File);
}
USHORT JAM::Previous (ULONG &ulMsg)
{
USHORT RetVal = FALSE, MayBeNext = FALSE;
LONG Pos;
JAMIDXREC jamIdx;
if (jamHdrInfo.ActiveMsgs > 0L) {
// --------------------------------------------------------------------
// The first attempt to retrive the next message number suppose that
// the file pointers are located after the current message number.
// Usually this is the 99% of the situations because the messages are
// often readed sequentially.
// --------------------------------------------------------------------
if (tell (fdJdx) >= sizeof (jamIdx)) {
Pos = tell (fdJdx) - sizeof (jamIdx);
do {
lseek (fdJdx, Pos, SEEK_SET);
if (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
if (MayBeNext == TRUE) {
if (!(jamHdr.Attribute & MSG_DELETED) && jamHdr.MsgNum < ulMsg) {
ulMsg = jamHdr.MsgNum;
RetVal = TRUE;
}
}
if (!(jamHdr.Attribute & MSG_DELETED) && jamHdr.MsgNum == ulMsg)
MayBeNext = TRUE;
}
Pos -= sizeof (jamIdx);
} while (RetVal == FALSE && Pos >= 0L);
}
if (RetVal == FALSE && MayBeNext == FALSE) {
// --------------------------------------------------------------------
// It seems that the file pointers are not located where they should be
// so our next attempt is to scan the database from the end to find
// the next message number.
// --------------------------------------------------------------------
Pos = filelength (fdJdx) - sizeof (jamIdx);
do {
lseek (fdJdx, Pos, SEEK_SET);
if (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
if (!(jamHdr.Attribute & MSG_DELETED) && jamHdr.MsgNum < ulMsg) {
ulMsg = jamHdr.MsgNum;
RetVal = TRUE;
}
}
Pos -= sizeof (jamIdx);
} while (RetVal == FALSE && Pos >= 0L);
}
Id = 0L;
if (RetVal == TRUE)
Id = ulMsg;
}
return (RetVal);
}
USHORT JAM::ReadHeader (ULONG ulMsg)
{
USHORT RetVal = FALSE;
UCHAR *pPos;
ULONG ulSubfieldLen;
struct tm *local;
JAMIDXREC jamIdx;
JAMBINSUBFIELD *jamSubField;
New ();
if (Id == ulMsg) {
// --------------------------------------------------------------------
// The user is requesting the header of the last message retrived
// so our first attempt is to read the last index from the file and
// check if this is the correct one.
// --------------------------------------------------------------------
lseek (fdJdx, tell (fdJdx) - sizeof (jamIdx), SEEK_SET);
if (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
if (!(jamHdr.Attribute & MSG_DELETED) && jamHdr.MsgNum == ulMsg)
RetVal = TRUE;
}
}
if (RetVal == FALSE) {
// --------------------------------------------------------------------
// The message request is not the last retrived or the file pointers
// are not positioned where they should be, so now we attempt to
// retrive the message header scanning the database from the beginning.
// --------------------------------------------------------------------
Id = 0L;
lseek (fdJdx, 0L, SEEK_SET);
do {
if (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
if (!(jamHdr.Attribute & MSG_DELETED) && jamHdr.MsgNum == ulMsg)
RetVal = TRUE;
}
} while (RetVal == FALSE && tell (fdJdx) < filelength (fdJdx));
}
if (RetVal == TRUE) {
Current = Id = ulMsg;
Crash = (UCHAR)((jamHdr.Attribute & MSG_CRASH) ? TRUE : FALSE);
Direct = (UCHAR)((jamHdr.Attribute & MSG_DIRECT) ? TRUE : FALSE);
FileAttach = (UCHAR)((jamHdr.Attribute & MSG_FILEATTACH) ? TRUE : FALSE);
FileRequest = (UCHAR)((jamHdr.Attribute & MSG_FILEREQUEST) ? TRUE : FALSE);
Hold = (UCHAR)((jamHdr.Attribute & MSG_HOLD) ? TRUE : FALSE);
Immediate = (UCHAR)((jamHdr.Attribute & MSG_IMMEDIATE) ? TRUE : FALSE);
Intransit = (UCHAR)((jamHdr.Attribute & MSG_INTRANSIT) ? TRUE : FALSE);
KillSent = (UCHAR)((jamHdr.Attribute & MSG_KILLSENT) ? TRUE : FALSE);
Local = (UCHAR)((jamHdr.Attribute & MSG_LOCAL) ? TRUE : FALSE);
Private = (UCHAR)((jamHdr.Attribute & MSG_PRIVATE) ? TRUE : FALSE);
ReceiptRequest = (UCHAR)((jamHdr.Attribute & MSG_RECEIPTREQ) ? TRUE : FALSE);
Received = (UCHAR)((jamHdr.Attribute & MSG_READ) ? TRUE : FALSE);
Sent = (UCHAR)((jamHdr.Attribute & MSG_SENT) ? TRUE : FALSE);
local = localtime ((const time_t *)&jamHdr.DateWritten);
Written.Day = (UCHAR)local->tm_mday;
Written.Month = (UCHAR)(local->tm_mon + 1);
if (Written.Month < 1 || Written.Month > 12)
Written.Month = 1;
Written.Year = (USHORT)(local->tm_year + 1900);
Written.Hour = (UCHAR)local->tm_hour;
Written.Minute = (UCHAR)local->tm_min;
Written.Second = (UCHAR)local->tm_sec;
local = localtime ((const time_t *)&jamHdr.DateProcessed);
Arrived.Day = (UCHAR)local->tm_mday;
Arrived.Month = (UCHAR)(local->tm_mon + 1);
if (Arrived.Month < 1 || Arrived.Month > 12)
Arrived.Month = 1;
Arrived.Year = (USHORT)(local->tm_year + 1900);
Arrived.Hour = (UCHAR)local->tm_hour;
Arrived.Minute = (UCHAR)local->tm_min;
Arrived.Second = (UCHAR)local->tm_sec;
Original = jamHdr.ReplyTo;
Reply = jamHdr.ReplyNext;
if (pSubfield != NULL)
free (pSubfield);
pSubfield = NULL;
if (jamHdr.SubfieldLen > 0L) {
ulSubfieldLen = jamHdr.SubfieldLen;
pPos = pSubfield = (UCHAR *)malloc ((size_t)(ulSubfieldLen + 1));
if (pSubfield == NULL)
return (FALSE);
read (fdHdr, pSubfield, (size_t)jamHdr.SubfieldLen);
while (ulSubfieldLen > 0L) {
jamSubField = (JAMBINSUBFIELD *)pPos;
pPos += sizeof (JAMBINSUBFIELD);
switch (jamSubField->LoID) {
case JAMSFLD_SENDERNAME:
memcpy (From, pPos, (INT)jamSubField->DatLen);
From[(INT)jamSubField->DatLen] = '\0';
break;
case JAMSFLD_RECVRNAME:
memcpy (To, pPos, (INT)jamSubField->DatLen);
To[(INT)jamSubField->DatLen] = '\0';
break;
case JAMSFLD_SUBJECT:
memcpy (Subject, pPos, (INT)jamSubField->DatLen);
Subject[(INT)jamSubField->DatLen] = '\0';
break;
case JAMSFLD_OADDRESS:
memcpy (FromAddress, pPos, (INT)jamSubField->DatLen);
FromAddress[(INT)jamSubField->DatLen] = '\0';
break;
case JAMSFLD_DADDRESS:
memcpy (ToAddress, pPos, (INT)jamSubField->DatLen);
ToAddress[(INT)jamSubField->DatLen] = '\0';
break;
default:
break;
}
ulSubfieldLen -= sizeof (JAMBINSUBFIELD) + jamSubField->DatLen;
if (ulSubfieldLen > 0)
pPos += (USHORT)jamSubField->DatLen;
}
}
}
return (RetVal);
}
USHORT JAM::Read (ULONG ulMsg, SHORT nWidth)
{
return (Read (ulMsg, Text, nWidth));
}
USHORT JAM::Read (ULONG ulMsg, class TCollection &MsgText, SHORT nWidth)
{
USHORT RetVal = FALSE, SkipNext;
SHORT i, nReaded, nCol, nRead;
CHAR *p;
UCHAR *pPos;
ULONG ulTxtLen, ulSubfieldLen;
JAMIDXREC jamIdx;
JAMBINSUBFIELD *jamSubField;
class TCollection Bottom;
MsgText.Clear ();
if ((RetVal = ReadHeader (ulMsg)) == TRUE) {
lseek (fdJdx, tell (fdJdx) - sizeof (jamIdx), SEEK_SET);
read (fdJdx, &jamIdx, sizeof (jamIdx));
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
if ((p = strchr (FromAddress, '.')) != NULL) {
p++;
if (atoi (p) != 0) {
sprintf (szLine, "\001FMPT %s", p);
MsgText.Add (szLine, (USHORT)(strlen (szLine) + 1));
}
}
if ((p = strchr (ToAddress, '.')) != NULL) {
p++;
if (atoi (p) != 0) {
sprintf (szLine, "\001TOPT %s", p);
MsgText.Add (szLine, (USHORT)(strlen (szLine) + 1));
}
}
if (pSubfield != NULL)
free (pSubfield);
pSubfield = NULL;
if (jamHdr.SubfieldLen > 0L) {
ulSubfieldLen = jamHdr.SubfieldLen;
pPos = pSubfield = (UCHAR *)malloc ((size_t)(ulSubfieldLen + 1));
if (pSubfield == NULL)
return (FALSE);
read (fdHdr, pSubfield, (size_t)jamHdr.SubfieldLen);
while (ulSubfieldLen > 0L) {
jamSubField = (JAMBINSUBFIELD *)pPos;
pPos += sizeof (JAMBINSUBFIELD);
switch (jamSubField->LoID) {
case JAMSFLD_MSGID:
memcpy (szBuff, pPos, (INT)jamSubField->DatLen);
szBuff[(INT)jamSubField->DatLen] = '\0';
sprintf (szLine, "\001MSGID: %s", szBuff);
MsgText.Add (szLine);
break;
case JAMSFLD_REPLYID:
memcpy (szBuff, pPos, (INT)jamSubField->DatLen);
szBuff[(INT)jamSubField->DatLen] = '\0';
sprintf (szLine, "\001REPLYID: %s", szBuff);
MsgText.Add (szLine);
break;
case JAMSFLD_PID:
memcpy (szBuff, pPos, (INT)jamSubField->DatLen);
szBuff[(INT)jamSubField->DatLen] = '\0';
sprintf (szLine, "\001PID: %s", szBuff);
MsgText.Add (szLine);
break;
case JAMSFLD_SEENBY2D:
memcpy (szBuff, pPos, (INT)jamSubField->DatLen);
szBuff[(INT)jamSubField->DatLen] = '\0';
sprintf (szLine, "SEEN-BY: %s", szBuff);
Bottom.Add (szLine);
break;
case JAMSFLD_PATH2D:
memcpy (szBuff, pPos, (INT)jamSubField->DatLen);
szBuff[(INT)jamSubField->DatLen] = '\0';
sprintf (szLine, "\001PATH: %s", szBuff);
Bottom.Add (szLine);
break;
default:
break;
}
ulSubfieldLen -= sizeof (JAMBINSUBFIELD) + jamSubField->DatLen;
if (ulSubfieldLen > 0)
pPos += (USHORT)jamSubField->DatLen;
}
}
lseek (fdJdt, jamHdr.TxtOffset, SEEK_SET);
ulTxtLen = jamHdr.TxtLen;
pLine = szLine;
nCol = 0;
SkipNext = FALSE;
do {
if ((ULONG)(nRead = sizeof (szBuff)) > ulTxtLen)
nRead = (SHORT)ulTxtLen;
nReaded = (SHORT)read (fdJdt, szBuff, nRead);
for (i = 0, pBuff = szBuff; i < nReaded; i++, pBuff++) {
if (*pBuff == '\r') {
*pLine = '\0';
if (pLine > szLine && SkipNext == TRUE) {
pLine--;
while (pLine > szLine && *pLine == ' ')
*pLine-- = '\0';
if (pLine > szLine)
MsgText.Add (szLine, (USHORT)(strlen (szLine) + 1));
}
else if (SkipNext == FALSE)
MsgText.Add (szLine);
SkipNext = FALSE;
pLine = szLine;
nCol = 0;
}
else if (*pBuff != '\n') {
*pLine++ = *pBuff;
nCol++;
if (nCol >= nWidth) {
*pLine = '\0';
if (strchr (szLine, ' ') != NULL) {
while (nCol > 1 && *pLine != ' ') {
nCol--;
pLine--;
}
if (nCol > 0) {
while (*pLine == ' ')
pLine++;
strcpy (szWrp, pLine);
}
*pLine = '\0';
}
else
szWrp[0] = '\0';
MsgText.Add (szLine);
strcpy (szLine, szWrp);
pLine = strchr (szLine, '\0');
nCol = (SHORT)strlen (szLine);
SkipNext = TRUE;
}
}
}
ulTxtLen -= nRead;
} while (ulTxtLen > 0);
if ((p = (CHAR *)Bottom.First ()) != NULL)
do {
MsgText.Add (p);
} while ((p = (CHAR *)Bottom.Next ()) != NULL);
}
return (RetVal);
}
VOID JAM::SetHWM (ULONG ulMsg)
{
ulMsg = ulMsg;
}
ULONG JAM::UidToMsgn (ULONG ulMsg)
{
ULONG RetVal = 0L, i = 1L;
JAMIDXREC jamIdx;
if (fdJdx != -1 && fdHdr != -1) {
lseek (fdJdx, 0L, SEEK_SET);
while (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
if (!(jamHdr.Attribute & MSG_DELETED)) {
if (jamHdr.MsgNum == ulMsg) {
RetVal = i;
break;
}
i++;
}
}
}
if (jamHdrInfo.ActiveMsgs == 0L)
RetVal = 0L;
return (RetVal);
}
VOID JAM::UnLock ()
{
}
USHORT JAM::WriteHeader (ULONG ulMsg)
{
USHORT RetVal = FALSE;
JAMIDXREC jamIdx;
if (Id == ulMsg) {
// --------------------------------------------------------------------
// The user is requesting to write the header of the last message
// retrived so our first attempt is to read the last index from the
// file and check if this is the correct one.
// --------------------------------------------------------------------
lseek (fdJdx, tell (fdJdx) - sizeof (jamIdx), SEEK_SET);
if (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
if (!(jamHdr.Attribute & MSG_DELETED) && jamHdr.MsgNum == ulMsg)
RetVal = TRUE;
}
}
if (RetVal == FALSE) {
// --------------------------------------------------------------------
// The message requested is not the last retrived or the file pointers
// are not positioned where they should be, so now we attempt to
// retrive the message header scanning the database from the beginning.
// --------------------------------------------------------------------
Id = 0L;
lseek (fdJdx, 0L, SEEK_SET);
do {
if (read (fdJdx, &jamIdx, sizeof (jamIdx)) == sizeof (jamIdx)) {
lseek (fdHdr, jamIdx.HdrOffset, SEEK_SET);
read (fdHdr, &jamHdr, sizeof (JAMHDR));
if (!(jamHdr.Attribute & MSG_DELETED) && jamHdr.MsgNum == ulMsg)
RetVal = TRUE;
}
} while (RetVal == FALSE && tell (fdJdx) < filelength (fdJdx));
}