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/******************************************************************************
(c) 2001-2002 Christine Caulfield christine.caulfield@googlemail.com
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
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.
******************************************************************************/
#include <sys/types.h>
#include <unistd.h>
#include <syslog.h>
#include <time.h>
#include <string.h>
#include <sstream>
#include <list>
#include <string>
#include <map>
#include <queue>
#include <iterator>
#include "lat.h"
#include "latcp.h"
#include "utils.h"
#include "services.h"
#include "session.h"
#include "localport.h"
#include "connection.h"
#include "circuit.h"
#include "latcpcircuit.h"
#include "llogincircuit.h"
#include "server.h"
LLOGINCircuit::LLOGINCircuit(int _fd):
Circuit(_fd)
{
}
LLOGINCircuit::~LLOGINCircuit()
{
}
bool LLOGINCircuit::do_command()
{
unsigned char head[3];
bool retval = true;
int ptr;
debuglog(("llogin: do_command on fd %d\n", fd));
// Get the message header (cmd & length)
if (read(fd, head, sizeof(head)) != 3)
return false; // Bad header
int len = head[1] * 256 + head[2];
unsigned char *cmdbuf = new unsigned char[len];
// Read the message buffer
if (read(fd, cmdbuf, len) != len)
{
delete[] cmdbuf;
return false; // Bad message
}
// Have we completed negotiation?
if (head[0] != LATCP_VERSION &&
state != RUNNING)
{
delete[] cmdbuf;
return false;
}
debuglog(("llogin: do_command %d\n", head[0]));
// Do the command
switch (head[0])
{
case LATCP_VERSION:
if (strcmp(VERSION, (char*)cmdbuf) == 0)
{
state = RUNNING; // Versions match
send_reply(LATCP_VERSION, VERSION, -1);
}
else
{
char error[1024];
debuglog(("Connect from invalid llogin version %s\n", cmdbuf));
sprintf(error, "llogin version %s does not match latd version " VERSION, cmdbuf);
send_reply(LATCP_ERRORMSG, error, -1);
retval = false;
}
break;
case LATCP_SHOWSERVICE:
{
int verbose = cmdbuf[0];
std::ostringstream st;
debuglog(("llogin: show_services(verbose=%d)\n", verbose));
LATServices::Instance()->list_services(verbose?true:false, st);
send_reply(LATCP_SHOWSERVICE, st.str().c_str(), (int)st.tellp());
// st.freeze(false);
}
break;
case LATCP_TERMINALSESSION:
{
// Close the llogincircuit and pretend to be a PTY
// connected to a lloginsession.
ptr = 0;
bool queued = cmdbuf[ptr++];
get_string((unsigned char*)cmdbuf, &ptr, (unsigned char*)service);
get_string((unsigned char*)cmdbuf, &ptr, (unsigned char*)node);
get_string((unsigned char*)cmdbuf, &ptr, (unsigned char*)port);
get_string((unsigned char*)cmdbuf, &ptr, (unsigned char*)localport);
get_string((unsigned char*)cmdbuf, &ptr, (unsigned char*)password);
debuglog(("Terminal session for S:%s, N:%s, P:%s\n",
service, node, port));
// Do the biz
if (LATServer::Instance()->make_llogin_connection(fd,
service,
node,
port,
localport,
password,
queued) < 0)
{
debuglog(("sending failure back to llogin\n"));
send_reply(LATCP_ERRORMSG, "Can't find LAT service.", -1);
}
else
{
send_reply(LATCP_ACK, "", -1);
state = TERMINAL;
}
}
break;
default:
syslog(LOG_INFO, "Unknown llogin command %d\n", head[0]);
retval = false;
break;
}
delete[] cmdbuf;
return retval;
}
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