int SMTPHelo(STREAM *S)
{
int RetVal=0;
char *Tempstr=NULL, *Token=NULL;
const char *ptr;
ptr=LibUsefulGetValue("SMTP:HELO");
if (! StrValid(ptr)) ptr=STREAMGetValue(S,"SMTP:HELO");
if (! StrValid(ptr))
{
Token=GetExternalIP(Token);
ptr=Token;
}
Tempstr=MCopyStr(Tempstr, "EHLO ", ptr, "\r\n", NULL);
STREAMWriteLine(Tempstr,S);
Tempstr=SMTPRead(Tempstr, S);
if (*Tempstr == '2')
{
RetVal |= CAP_EHLO;
ptr=GetToken(Tempstr,"\n",&Token,0);
while (ptr)
{
StripTrailingWhitespace(Token);
RetVal |= SMTPParseCapabilities(Token);
ptr=GetToken(ptr,"\n",&Token,0);
}
}
//Some old server that doesn't support EHLO, switch to HELO
else
{
Tempstr=MCopyStr(Tempstr, "HELO ", ptr, "\r\n", NULL);
STREAMWriteLine(Tempstr,S);
if (SMTPInteract(Tempstr, S)) RetVal |= CAP_HELO;
}
DestroyString(Tempstr);
DestroyString(Token);
return(RetVal);
}
int SMTPInteract(const char *Line, STREAM *S)
{
char *Tempstr=NULL;
int result=FALSE;
if (StrValid(Line)) STREAMWriteLine(Line, S);
STREAMFlush(S);
Tempstr=SMTPRead(Tempstr, S);
/*
syslog(LOG_DEBUG,"mail >> %s",Line);
syslog(LOG_DEBUG,"mail << %s",Tempstr);
*/
if (
StrValid(Tempstr) &&
( (*Tempstr=='2') || (*Tempstr=='3') )
) result=TRUE;
DestroyString(Tempstr);
return(result);
}
KWBoolean
SMTPGetLine(SMTPClient *client)
{
static const char mName[] = "SMTPGetLine";
char *lineBreak;
size_t lineLength;
KWBoolean bResult = KWTrue;
/*--------------------------------------------------------------------*/
/* Handle previously signaled EOF */
/*--------------------------------------------------------------------*/
if (isClientEOF(client) && (client->receive.NetworkUsed == 0))
{
printmsg(0, "%s: client %d is out of data (EOF)",
mName,
getClientSequence(client));
SetDataLine(client, "", 0);
setClientMode(client, SM_ABORT);
return KWTrue;
}
/*--------------------------------------------------------------------*/
/* Read more data if we have some and need it, */
/*--------------------------------------------------------------------*/
lineBreak = getLineBreak(&client->receive);
if (getClientReady(client) && (lineBreak == NULL))
{
if (client->stalledReads) /* Improve response time ... */
client->stalledReads--;
SMTPRead(client);
lineBreak = getLineBreak(&client->receive);
}
/*--------------------------------------------------------------------*/
/* If no data available, return immediately */
/*--------------------------------------------------------------------*/
if (lineBreak == NULL)
{
if (isClientEOF(client))
{
static const char quit[] = "quit";
static const size_t quitLength = sizeof quit - 1;
if ((client->receive.NetworkUsed == quitLength) &&
equalni(client->receive.NetworkBuffer, quit, quitLength))
{
printmsg(8,"%s: Applying CR/LF after Netscape %s/EOF",
mName,
quit);
SetDataLine(client, client->receive.NetworkBuffer, quitLength);
SMTPBurpBuffer(client, client->receive.NetworkUsed);
}
else {
printmsg(0, "%s: Client %d Terminated unexpectedly without QUIT",
mName,
getClientSequence(client));
SMTPBurpBuffer(client, client->receive.NetworkUsed);
/* Abort client immediately */
setClientMode(client, SM_ABORT);
return KWTrue;
}
}
else if (client->receive.NetworkUsed < MAX_BUFFER_SIZE)
{
printmsg(2, "%s: Client %d Input buffer "
"(%d bytes) waiting for data.",
mName,
getClientSequence(client),
client->receive.NetworkUsed);
/* Sleep client for few secs */
setClientIgnore(client, (time_t) ++client->stalledReads);
/* Don't process command yet */
return KWFalse;
} /* END if (client->receive.NetworkUsed < MAX_BUFFER_SIZE) */
else {
printmsg(0, "%d <<< %.125s",
getClientSequence(client),
client->receive.NetworkBuffer);
printmsg(0, "%s: Client %d Input buffer (%d bytes) full (cannot append more).",
mName,
getClientSequence(client),
client->receive.NetworkUsed);
SetDataLine(client,
client->receive.NetworkBuffer,
client->receive.NetworkUsed);
SMTPBurpBuffer(client, client->receive.NetworkUsed);
/* Abort client immediately */
setClientMode(client, SM_ABORT);
return KWTrue;
} /* END else */
} /* END if (lineBreak == NULL) */
lineLength = lineBreak - client->receive.NetworkBuffer;
bResult = SetDataLine(client,
client->receive.NetworkBuffer,
lineLength);
SMTPBurpBuffer(client, lineLength + 2);
return bResult;
} /* END SMTPGetLine */
