contiki/apps/email/smtp-socket.c

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/*
* 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 Contiki operating system.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#include "smtp.h"
#include "smtp-strings.h"
#include "contiki-net.h"
#include <string.h>
struct smtp_state {
char connected;
struct psock psock;
char inputbuffer[4];
char *to;
char *cc;
char *from;
char *subject;
char *msg;
uint8_t msgwidth;
uint8_t msgheight;
uint8_t line;
};
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
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#define SEND_STRING(s, str) PSOCK_SEND(s, (uint8_t *)str, (unsigned char)strlen(str))
/*---------------------------------------------------------------------------*/
static
PT_THREAD(smtp_thread(void))
{
PSOCK_BEGIN(&s.psock);
PSOCK_READTO(&s.psock, ISO_nl);
if(strncmp(s.inputbuffer, smtp_220, 3) != 0) {
PSOCK_CLOSE(&s.psock);
smtp_done(2);
PSOCK_EXIT(&s.psock);
}
SEND_STRING(&s.psock, (char *)smtp_helo);
SEND_STRING(&s.psock, localhostname);
SEND_STRING(&s.psock, (char *)smtp_crnl);
PSOCK_READTO(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_2) {
PSOCK_CLOSE(&s.psock);
smtp_done(3);
PSOCK_EXIT(&s.psock);
}
SEND_STRING(&s.psock, (char *)smtp_mail_from);
SEND_STRING(&s.psock, s.from);
SEND_STRING(&s.psock, (char *)smtp_crnl);
PSOCK_READTO(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_2) {
PSOCK_CLOSE(&s.psock);
smtp_done(4);
PSOCK_EXIT(&s.psock);
}
SEND_STRING(&s.psock, (char *)smtp_rcpt_to);
SEND_STRING(&s.psock, s.to);
SEND_STRING(&s.psock, (char *)smtp_crnl);
PSOCK_READTO(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_2) {
PSOCK_CLOSE(&s.psock);
smtp_done(5);
PSOCK_EXIT(&s.psock);
}
if(*s.cc != 0) {
SEND_STRING(&s.psock, (char *)smtp_rcpt_to);
SEND_STRING(&s.psock, s.cc);
SEND_STRING(&s.psock, (char *)smtp_crnl);
PSOCK_READTO(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_2) {
PSOCK_CLOSE(&s.psock);
smtp_done(6);
PSOCK_EXIT(&s.psock);
}
}
SEND_STRING(&s.psock, (char *)smtp_data);
PSOCK_READTO(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_3) {
PSOCK_CLOSE(&s.psock);
smtp_done(7);
PSOCK_EXIT(&s.psock);
}
SEND_STRING(&s.psock, (char *)smtp_to);
SEND_STRING(&s.psock, s.to);
SEND_STRING(&s.psock, (char *)smtp_crnl);
if(*s.cc != 0) {
SEND_STRING(&s.psock, (char *)smtp_cc);
SEND_STRING(&s.psock, s.cc);
SEND_STRING(&s.psock, (char *)smtp_crnl);
}
SEND_STRING(&s.psock, (char *)smtp_from);
SEND_STRING(&s.psock, s.from);
SEND_STRING(&s.psock, (char *)smtp_crnl);
SEND_STRING(&s.psock, (char *)smtp_subject);
SEND_STRING(&s.psock, s.subject);
SEND_STRING(&s.psock, (char *)smtp_crnl);
for(s.line = 0; s.line < s.msgheight; ++s.line) {
SEND_STRING(&s.psock, (char *)smtp_crnl);
SEND_STRING(&s.psock, &s.msg[s.line * s.msgwidth]);
}
SEND_STRING(&s.psock, (char *)smtp_crnlperiodcrnl);
PSOCK_READTO(&s.psock, ISO_nl);
if(s.inputbuffer[0] != ISO_2) {
PSOCK_CLOSE(&s.psock);
smtp_done(8);
PSOCK_EXIT(&s.psock);
}
SEND_STRING(&s.psock, (char *)smtp_quit);
smtp_done(SMTP_ERR_OK);
PSOCK_END(&s.psock);
}
/*---------------------------------------------------------------------------*/
void
smtp_appcall(void *state)
{
if(uip_closed()) {
s.connected = 0;
return;
}
if(uip_aborted() || uip_timedout()) {
s.connected = 0;
smtp_done(1);
return;
}
smtp_thread();
}
/*---------------------------------------------------------------------------*/
void
smtp_configure(char *lhostname, uip_ipaddr_t *server)
{
localhostname = lhostname;
uip_ipaddr_copy(&smtpserver, server);
}
/*---------------------------------------------------------------------------*/
unsigned char
smtp_send(char *to, char *cc, char *from, char *subject,
char *msg, uint8_t msgwidth, uint8_t msgheight)
{
struct uip_conn *conn;
conn = tcp_connect(&smtpserver, UIP_HTONS(25), NULL);
if(conn == NULL) {
return 0;
}
s.connected = 1;
s.to = to;
s.cc = cc;
s.from = from;
s.subject = subject;
s.msg = msg;
s.msgwidth = msgwidth;
s.msgheight = msgheight;
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PSOCK_INIT(&s.psock, (uint8_t *)s.inputbuffer, sizeof(s.inputbuffer));
return 1;
}
/*---------------------------------------------------------------------------*/
void
smtp_init(void)
{
s.connected = 0;
}
/*---------------------------------------------------------------------------*/