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// smtp.C -*- C++ -*- socket library
// Copyright (C) 1992-1996 Gnanasekaran Swaminathan <gs4t@virginia.edu>
//
// Permission is granted to use at your own risk and distribute this software
// in source and binary forms provided the above copyright notice and this
// paragraph are preserved on all copies. This software is provided "as is"
// with no express or implied warranty.
//
// Version: 12Jan97 1.11
#include <config.h>
#include <socket++/smtp.h>
#include <socket++/fork.h>
#include <fcntl.h>
#ifndef WIN32
#include <unistd.h>
#endif
#include <stdlib.h>
#include <string.h>
using namespace std;
void smtp::smtpbuf::get_response ()
// get all the response that one can get and send all of them to o
{
// if o is 0, then we trash data.
while (underflow () != EOF) {
int n = in_avail ();
if (n < 5)
continue;
// data is of this form: 221 repsonse <CRLF> or 221-response <CRLF>
char* q = gptr ();
char* p = q;
// zap upto <CRLF>
for (int i = 2; i <= n; i++, p++)
if (*p == '\r' && *(p+1) == '\n') {
if (o)
o->write (q, i);
gbump (i);
break;
}
if (q [3] != '-')
break;
}
}
void smtp::smtpbuf::send_cmd (const char* cmd, const char* s, const char* p)
{
xsputn (cmd, ::strlen (cmd));
if (s)
xsputn (s, ::strlen (s));
if (p)
xsputn (p, ::strlen (p));
xsputn ("\r\n", 2);
sync ();
if (o)
get_response ();
}
void smtp::smtpbuf::helo ()
{
if (o)
get_response ();
send_cmd ("HELO ", localhost ());
}
void smtp::smtpbuf::mail (const char* reverse_path)
{
if (reverse_path)
send_cmd ("MAIL FROM:<", reverse_path, ">");
else
send_cmd ("MAIL FROM:<>");
}
void smtp::smtpbuf::rcpt (const char* forward_path)
{
if (forward_path)
send_cmd ("RCPT TO:<", forward_path, ">");
}
void smtp::smtpbuf::help (const char* s)
{
send_cmd ("HELP ", s);
}
void smtp::smtpbuf::send_buf (const char* buf, int len)
{
if (buf == 0 || len <= 0)
return;
// send line by line
const unsigned char* p = (const unsigned char*) buf;
if (*p == '.')
sputc ((unsigned int) '.');
for (int i = 0; i < len; i++, p++) {
if (*p == '\n') {
sputc ((unsigned int) '\r');
sputc (*p);
if (*(p+1) == '.')
sputc ((unsigned int) '.');
} else
sputc (*p);
}
}
void smtp::smtpbuf::data (const char* buf, int len)
{
data ();
send_buf (buf, len);
xsputn ("\r\n.\r\n", 5);
sync ();
if (o)
get_response ();
}
void smtp::smtpbuf::data (const char* filename)
{
data ();
int fd = 0;
char buf [1024];
int rcnt;
if (filename == 0 || (fd = ::open (filename, O_RDONLY )) == -1)
fd = 0;
while ((rcnt = ::read (fd, buf, 1024)) > 0)
send_buf (buf, rcnt);
xsputn ("\r\n.\r\n", 5);
sync ();
if (o)
get_response ();
}
int smtp::get_response (char* buf, int len)
// same as get line except what it returns
// return 1 if output continues after this line
// return 0 if output has terminated
{
if (len < 8) {
this->getline (buf, len);
return 0;
}
buf [3] = 0;
this->getline (buf, len);
return buf [3] == '-';
}
ostream& operator << (ostream& o, smtp& s)
{
char buf [1024];
int cont = 1;
while (cont) {
cont = s.get_response (buf, 1024);
o << buf << endl;
}
return o;
}
void smtp::smtpbuf::serve_clients (int portno)
{
}
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