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// Copyright (c) 1999 Peter Karlsson
//
// $Id: jamread.cpp,v 1.7 1999/10/05 13:48:55 peter Exp $
//
// 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, version 2
//
// 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.
// JAM(mbp) - Copyright 1993 Joaquim Homrighausen, Andrew Milner,
// Mats Birch, Mats Wallin.
// ALL RIGHTS RESERVED.
#include <string>
#include <iostream.h>
#include <time.h>
#include <stdio.h>
#include "jamread.h"
const UINT8 JamRead::Jam_signature[4] = "JAM";
JamRead::JamRead(const char *path)
{
areapath = strdup(path);
}
JamRead::~JamRead()
{
if (areapath) delete areapath;
}
bool JamRead::Transfer(time_t starttime, StatEngine &destination)
{
// Check that we got the path correctly in initialization
if (!areapath)
{
cerr << "Internal error: Area path was not allocated properly" << endl;
return false;
}
// Open the message area files
// <name>.jdx - contains one record per message
string filepath = string(areapath) + ".jdx";
FILE *jdx = fopen(filepath.c_str(), "rb");
if (!jdx)
{
cerr << "Error: Cannot open " << filepath << endl;
return false;
}
// <name>.jhr - contains header information for messages
filepath = string(areapath) + ".jhr";
FILE *jhr = fopen(filepath.c_str(), "rb");
if (!jhr)
{
cerr << "Error: Cannot open " << filepath << endl;
return false;
}
jamhdr_header_s baseheader;
if (1 != fread(&baseheader, sizeof (jamhdr_header_s), 1, jhr))
{
cerr << "Error: Couldn't read from " << filepath << endl;
return false;
}
if (memcmp(baseheader.signature, Jam_signature, sizeof(Jam_signature)) != 0)
{
cerr << "Error: Illegal JAM header" << endl;
return false;
}
// <name>.jdt - contains message text
filepath = string(areapath) + ".jdt";
FILE *jdt = fopen(filepath.c_str(), "rb");
if (!jdt)
{
cerr << "Error: Cannot open " << filepath << endl;
return false;
}
// Read messages one by one
bool stay = true;
unsigned active = 0, found = 0, total = baseheader.activemsgs,
subfieldtotal;
jamjdx_s jdxinfo;
jamhdr_msg_s hdrinfo;
jamhdr_subhdr_s subheader;
string ctrlinfo, sender, recipient, subject;
char *buf, subtmp[101];
while (stay)
{
if (1 != fread(&jdxinfo, sizeof (jamjdx_s), 1, jdx))
{
// Nothing more to read, we are done
stay = false;
break;
}
found ++;
fseek(jhr, jdxinfo.jhroffset, SEEK_SET);
if (1 != fread(&hdrinfo, sizeof (jamhdr_msg_s), 1, jhr))
{
// Could not read message, quit
cerr << "Unable to read header #" << found + baseheader.basemsgnum;
}
if (0 == (hdrinfo.attribute & Jam_deleted))
{
// This is message is active
active ++;
cout << 100 * active / total << "% done\r";
if (active == total) stay = false;
// Check if message is too old
if (0 == hdrinfo.dateprocessed)
{
if ((time_t) hdrinfo.datewritten < starttime)
goto out;
}
else if ((time_t) hdrinfo.dateprocessed < starttime)
goto out;
// Retrieve message body
fseek(jdt, hdrinfo.offset, SEEK_SET);
buf = new char[hdrinfo.txtlen + 1];
if (!buf)
{
cerr << "Unable to allocate memory for message body (msg #"
<< found + baseheader.basemsgnum << ')' << endl;
goto out;
}
fread(buf, hdrinfo.txtlen, 1, jdt);
buf[hdrinfo.txtlen] = 0;
// Locate sender, recipient, subject and PID and MSGID kludges
// from subfields.
sender = "";
recipient = "";
subject = "";
ctrlinfo = "";
// Scan through the subfields
subfieldtotal = 0;
while (subfieldtotal < hdrinfo.subfieldlen)
{
if (1 == fread(&subheader, sizeof (jamhdr_subhdr_s),
1, jhr))
{
subfieldtotal += sizeof (jamhdr_subhdr_s) +
subheader.datlen;
switch (subheader.loid)
{
case Jam_sender:
fread(&subtmp, subheader.datlen, 1, jhr);
subtmp[subheader.datlen] = 0;
sender = subtmp;
break;
case Jam_recipient:
fread(&subtmp, subheader.datlen, 1, jhr);
subtmp[subheader.datlen] = 0;
recipient = subtmp;
break;
case Jam_subject:
fread(&subtmp, subheader.datlen, 1, jhr);
subtmp[subheader.datlen] = 0;
subject = subtmp;
break;
case Jam_MSGID:
fread(&subtmp, subheader.datlen, 1, jhr);
subtmp[subheader.datlen] = 0;
ctrlinfo += "\1MSGID: ";
ctrlinfo += subtmp;
break;
case Jam_PID:
fread(&subtmp, subheader.datlen, 1, jhr);
subtmp[subheader.datlen] = 0;
ctrlinfo += "\1PID: ";
ctrlinfo += subtmp;
break;
default:
fseek(jhr, subheader.datlen, SEEK_CUR);
break;
}
}
else
break;
}
destination.AddData(sender, recipient, subject,
ctrlinfo, string(buf),
hdrinfo.datewritten,
(0 == hdrinfo.dateprocessed)
? hdrinfo.datewritten
: hdrinfo.dateprocessed);
delete buf;
out:;
}
}
fclose(jhr);
fclose(jdt);
fclose(jdx);
return true;
}
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