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326 lines
11 KiB
C
326 lines
11 KiB
C
/*This file has been prepared for Doxygen automatic documentation generation.*/
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/*! \file *********************************************************************
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*
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* \brief Basic SMTP Client for AVR32 UC3.
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*
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* - Compiler: GNU GCC for AVR32
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* - Supported devices: All AVR32 devices can be used.
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* - AppNote:
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*
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* \author Atmel Corporation: http://www.atmel.com \n
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* Support and FAQ: http://support.atmel.no/
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*
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*****************************************************************************/
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/* Copyright (c) 2007, Atmel Corporation All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of ATMEL may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
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* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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Implements a simplistic SMTP client. First time the task is started, connection is made and
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email is sent. Mail flag is then reset. Each time you press the Push Button 0, a new mail will be sent.
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*/
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#if (SMTP_USED == 1)
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#include <string.h>
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// Scheduler includes.
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#include "FreeRTOS.h"
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#include "task.h"
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#include "BasicSMTP.h"
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// Demo includes.
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#include "portmacro.h"
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#include "partest.h"
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#include "intc.h"
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#include "gpio.h"
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// lwIP includes.
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#include "lwip/api.h"
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#include "lwip/tcpip.h"
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#include "lwip/memp.h"
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#include "lwip/stats.h"
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#include "lwip/opt.h"
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#include "lwip/api.h"
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#include "lwip/arch.h"
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#include "lwip/sys.h"
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#include "lwip/sockets.h"
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#include "netif/loopif.h"
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//! SMTP default port
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#define SMTP_PORT 25
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//! SMTP EHLO code answer
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#define SMTP_EHLO_STRING "220"
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//! SMTP end of transmission code answer
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#define SMTP_END_OF_TRANSMISSION_STRING "221"
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//! SMTP OK code answer
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#define SMTP_OK_STRING "250"
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//! SMTP start of transmission code answer
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#define SMTP_START_OF_TRANSMISSION_STRING "354"
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//! SMTP DATA<CRLF>
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#define SMTP_DATA_STRING "DATA\r\n"
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//! SMTP <CRLF>.<CRLF>
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#define SMTP_MAIL_END_STRING "\r\n.\r\n"
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//! SMTP QUIT<CRLFCRLF>
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#define SMTP_QUIT_STRING "QUIT\r\n"
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//! Server address
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#error configure SMTP server address
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portCHAR cServer[] = "192.168.0.1";
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//! Fill here the mailfrom with your mail address
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#error configure SMTP mail sender
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char cMailfrom[] = "MAIL FROM: <sender@domain.com>\r\n";
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//! Fill here the mailto with your contact mail address
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#error configure SMTP mail recipient
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char cMailto[] = "RCPT TO: <recipient@domain.com>\r\n";
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//! Fill here the mailcontent with the mail you want to send
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#error configure SMTP mail content
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char cMailcontent[] ="Subject: *** SPAM ***\r\nFROM: \"Your Name here\" <sender@domain.com>\r\nTO: \"Your Contact here\" <recipient@domain.com>\r\n\r\nSay what you want here.";
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//! flag to send mail
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Bool bSendMail = pdFALSE;
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//! buffer for SMTP response
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portCHAR cTempBuffer[200];
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//_____ D E C L A R A T I O N S ____________________________________________
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//! interrupt handler.
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#if __GNUC__
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__attribute__((naked))
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#elif __ICCAVR32__
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#pragma shadow_registers = full // Naked.
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#endif
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void vpushb_ISR( void );
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//! soft interrupt handler. where treatment should be done
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#if __GNUC__
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__attribute__((__noinline__))
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#endif
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static portBASE_TYPE prvpushb_ISR_NonNakedBehaviour( void );
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//! Basic SMTP client task definition
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portTASK_FUNCTION( vBasicSMTPClient, pvParameters )
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{
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struct sockaddr_in stServeurSockAddr;
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portLONG lRetval;
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portLONG lSocket = -1;
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// configure push button 0 to produce IT on falling edge
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gpio_enable_pin_interrupt(GPIO_PUSH_BUTTON_0 , GPIO_FALLING_EDGE);
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// Disable all interrupts
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vPortEnterCritical();
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// register push button 0 handler on level 3
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INTC_register_interrupt( (__int_handler)&vpushb_ISR, AVR32_GPIO_IRQ_0 + (GPIO_PUSH_BUTTON_0/8), INT3);
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// Enable all interrupts
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vPortExitCritical();
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for (;;)
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{
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// wait for a signal to send a mail
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while (bSendMail != pdTRUE) vTaskDelay(200);
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// Disable all interrupts
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vPortEnterCritical();
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// clear the flag
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bSendMail = pdFALSE;
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// Enable all interrupts
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vPortExitCritical();
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// clear the LED
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vParTestSetLED( 3 , pdFALSE );
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// Set up port
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memset(&stServeurSockAddr, 0, sizeof(stServeurSockAddr));
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stServeurSockAddr.sin_len = sizeof(stServeurSockAddr);
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stServeurSockAddr.sin_addr.s_addr = inet_addr(cServer);
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stServeurSockAddr.sin_port = htons(SMTP_PORT);
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stServeurSockAddr.sin_family = AF_INET;
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// socket as a stream
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if ( (lSocket = socket(AF_INET, SOCK_STREAM, 0)) < 0)
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{
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// socket failed, blink a LED and stay here
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for (;;) {
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vParTestToggleLED( 4 );
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vTaskDelay( 200 );
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}
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}
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// connect to the server
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if(connect(lSocket,(struct sockaddr *)&stServeurSockAddr, sizeof(stServeurSockAddr)) < 0)
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{
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// connect failed, blink a LED and stay here
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for (;;) {
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vParTestToggleLED( 6 );
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vTaskDelay( 200 );
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}
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}
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else
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{
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//Server: 220 SMTP Ready
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// wait for SMTP Server answer
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do
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{
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lRetval = recv(lSocket, cTempBuffer, sizeof(cTempBuffer), 0);
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}while (lRetval <= 0);
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if (strncmp(cTempBuffer, SMTP_EHLO_STRING, sizeof(cTempBuffer)) >= 0)
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{
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//Client: EHLO smtp.domain.com
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// send ehlo
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send(lSocket, "HELO ", 5, 0);
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send(lSocket, cServer, strlen(cServer), 0);
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send(lSocket, "\r\n", 2, 0);
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//Server: 250
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// wait for SMTP Server answer
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do
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{
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lRetval = recv(lSocket, cTempBuffer, sizeof(cTempBuffer), 0);
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}while (lRetval <= 0);
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if (strncmp(cTempBuffer, SMTP_OK_STRING, sizeof(cTempBuffer)) >= 0)
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{
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//Client: MAIL FROM:<sender@domain.com>
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// send MAIL FROM
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send(lSocket, cMailfrom, strlen(cMailfrom), 0);
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//Server: 250 OK
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// wait for SMTP Server answer
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do
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{
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lRetval = recv(lSocket, cTempBuffer, sizeof(cTempBuffer), 0);
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}while (lRetval <= 0);
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if (strncmp(cTempBuffer, SMTP_OK_STRING, sizeof(cTempBuffer)) >= 0)
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{
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//Client: RCPT TO:<receiver@domain.com>
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// send RCPT TO
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send(lSocket, cMailto, strlen(cMailto), 0);
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//Server: 250 OK
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// wait for SMTP Server answer
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do
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{
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lRetval = recv(lSocket, cTempBuffer, sizeof(cTempBuffer), 0);
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}while (lRetval <= 0);
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if (strncmp(cTempBuffer, SMTP_OK_STRING, sizeof(cTempBuffer)) >= 0)
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{
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//Client: DATA<CRLF>
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// send DATA
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send(lSocket, SMTP_DATA_STRING, 6, 0);
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//Server: 354 Start mail input; end with <CRLF>.<CRLF>
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// wait for SMTP Server answer
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do
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{
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lRetval = recv(lSocket, cTempBuffer, sizeof(cTempBuffer), 0);
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}while (lRetval <= 0);
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if (strncmp(cTempBuffer, SMTP_START_OF_TRANSMISSION_STRING, sizeof(cTempBuffer)) >= 0)
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{
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// send content
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send(lSocket, cMailcontent, strlen(cMailcontent), 0);
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//Client: <CRLF>.<CRLF>
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// send "<CRLF>.<CRLF>"
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send(lSocket, SMTP_MAIL_END_STRING, 5, 0);
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//Server: 250 OK
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// wait for SMTP Server answer
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do
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{
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lRetval = recv(lSocket, cTempBuffer, sizeof(cTempBuffer), 0);
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}while (lRetval <= 0);
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if (strncmp(cTempBuffer, SMTP_OK_STRING, sizeof(cTempBuffer)) >= 0)
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{
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//Client: QUIT<CRLFCRLF>
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// send QUIT
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send(lSocket, SMTP_QUIT_STRING, 8, 0);
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//Server: 221 smtp.domain.com closing transmission
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do
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{
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lRetval = recv(lSocket, cTempBuffer, sizeof(cTempBuffer), 0);
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}while (lRetval <= 0);
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if (strncmp(cTempBuffer, SMTP_END_OF_TRANSMISSION_STRING, sizeof(cTempBuffer)) >= 0)
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{
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vParTestSetLED( 3 , pdTRUE );
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}
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}
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}
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}
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}
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}
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// close socket
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close(lSocket);
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}
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}
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}
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}
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/*! \brief push button naked interrupt handler.
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*
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*/
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#if __GNUC__
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__attribute__((naked))
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#elif __ICCAVR32__
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#pragma shadow_registers = full // Naked.
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#endif
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void vpushb_ISR( void )
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{
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/* This ISR can cause a context switch, so the first statement must be a
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call to the portENTER_SWITCHING_ISR() macro. This must be BEFORE any
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variable declarations. */
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portENTER_SWITCHING_ISR();
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prvpushb_ISR_NonNakedBehaviour();
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portEXIT_SWITCHING_ISR();
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}
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/*! \brief push button interrupt handler. Here, declarations should be done
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*
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*/
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#if __GNUC__
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__attribute__((__noinline__))
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#elif __ICCAVR32__
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#pragma optimize = no_inline
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#endif
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static portBASE_TYPE prvpushb_ISR_NonNakedBehaviour( void )
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{
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if (gpio_get_pin_interrupt_flag(GPIO_PUSH_BUTTON_0))
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{
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// set the flag
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bSendMail = pdTRUE;
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// allow new interrupt : clear the IFR flag
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gpio_clear_pin_interrupt_flag(GPIO_PUSH_BUTTON_0);
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}
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// no context switch required, task is polling the flag
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return( pdFALSE );
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}
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#endif
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