/* smtp.c
* smtp SMTP E-mail sender
* Author: Adam Dunkels <adam@dunkels.com>
*
* The Simple Mail Transfer Protocol (SMTP) as defined by RFC821 is
* the standard way of sending and transfering e-mail on the
* Internet. This simple example implementation is intended as an
* example of how to implement protocols in uIP, and is able to send
* out e-mail but has not been extensively tested.
*
* Copyright (c) 2004, Adam Dunkels.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the uIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
* $Id: smtp.c,v 1.1.1.1 2007-08-26 23:07:06 patacongo Exp $
*/
#include <sys/types.h>
#include <string.h>
#include <net/uip/uip.h>
#include <net/uip/psock.h>
#include <net/uip/smtp.h>
#include "smtp-strings.h"
static struct smtp_state s;
static char *localhostname;
static uip_ipaddr_t smtpserver;
#define ISO_nl 0x0a
#define ISO_cr 0x0d
#define ISO_period 0x2e
#define ISO_2 0x32
#define ISO_3 0x33
#define ISO_4 0x34
#define ISO_5 0x35
/*---------------------------------------------------------------------------*/
static
void smtp_thread(void)
{
psock_readto(&s.psock, ISO_nl);
if(strncmp(s.inputbuffer, smtp_220, 3) != 0) {
PSOCK_CLOSE(&s.psock);
smtp_done(2);
pthread_exit(NULL);
}
PSOCK_SEND_STR(&s.psock, (char *)smtp_helo);
PSOCK_SEND_STR(&s.psock, localhostname);
PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
psock_readto(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_2) {
PSOCK_CLOSE(&s.psock);
smtp_done(3);
pthread_exit(NULL);
}
PSOCK_SEND_STR(&s.psock, (char *)smtp_mail_from);
PSOCK_SEND_STR(&s.psock, s.from);
PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
psock_readto(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_2) {
PSOCK_CLOSE(&s.psock);
smtp_done(4);
pthread_exit(NULL);
}
PSOCK_SEND_STR(&s.psock, (char *)smtp_rcpt_to);
PSOCK_SEND_STR(&s.psock, s.to);
PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
psock_readto(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_2) {
PSOCK_CLOSE(&s.psock);
smtp_done(5);
pthread_exit(NULL);
}
if(s.cc != 0) {
PSOCK_SEND_STR(&s.psock, (char *)smtp_rcpt_to);
PSOCK_SEND_STR(&s.psock, s.cc);
PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
psock_readto(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_2) {
PSOCK_CLOSE(&s.psock);
smtp_done(6);
pthread_exit(NULL);
}
}
PSOCK_SEND_STR(&s.psock, (char *)smtp_data);
psock_readto(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_3) {
PSOCK_CLOSE(&s.psock);
smtp_done(7);
pthread_exit(NULL);
}
PSOCK_SEND_STR(&s.psock, (char *)smtp_to);
PSOCK_SEND_STR(&s.psock, s.to);
PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
if(s.cc != 0) {
PSOCK_SEND_STR(&s.psock, (char *)smtp_cc);
PSOCK_SEND_STR(&s.psock, s.cc);
PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
}
PSOCK_SEND_STR(&s.psock, (char *)smtp_from);
PSOCK_SEND_STR(&s.psock, s.from);
PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
PSOCK_SEND_STR(&s.psock, (char *)smtp_subject);
PSOCK_SEND_STR(&s.psock, s.subject);
PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
psock_send(&s.psock, s.msg, s.msglen);
PSOCK_SEND_STR(&s.psock, (char *)smtp_crnlperiodcrnl);
psock_readto(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_2) {
PSOCK_CLOSE(&s.psock);
smtp_done(8);
pthread_exit(NULL);
}
PSOCK_SEND_STR(&s.psock, (char *)smtp_quit);
smtp_done(SMTP_ERR_OK);
}
/* This function is called by the UIP interrupt handling logic whenevent an
* event of interest occurs.
*/
void uip_interrupt_event(void)
{
if(uip_closed()) {
s.connected = 0;
return;
}
if(uip_aborted() || uip_timedout()) {
s.connected = 0;
smtp_done(1);
return;
}
smtp_thread();
}
/*---------------------------------------------------------------------------*/
/**
* Specificy an SMTP server and hostname.
*
* This function is used to configure the SMTP module with an SMTP
* server and the hostname of the host.
*
* \param lhostname The hostname of the uIP host.
*
* \param server A pointer to a 4-byte array representing the IP
* address of the SMTP server to be configured.
*/
void
smtp_configure(char *lhostname, void *server)
{
localhostname = lhostname;
uip_ipaddr_copy(smtpserver, server);
}
/*---------------------------------------------------------------------------*/
/**
* Send an e-mail.
*
* \param to The e-mail address of the receiver of the e-mail.
* \param cc The e-mail address of the CC: receivers of the e-mail.
* \param from The e-mail address of the sender of the e-mail.
* \param subject The subject of the e-mail.
* \param msg The actual e-mail message.
* \param msglen The length of the e-mail message.
*/
unsigned char
smtp_send(char *to, char *cc, char *from,
char *subject, char *msg, uint16 msglen)
{
struct uip_conn *conn;
conn = uip_connect(smtpserver, HTONS(25));
if(conn == NULL) {
return 0;
}
s.connected = 1;
s.to = to;
s.cc = cc;
s.from = from;
s.subject = subject;
s.msg = msg;
s.msglen = msglen;
psock_init(&s.psock, s.inputbuffer, sizeof(s.inputbuffer));
return 1;
}
/*---------------------------------------------------------------------------*/
void
smtp_init(void)
{
s.connected = 0;
}
/*---------------------------------------------------------------------------*/
/** @} */
/** @} */
