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Tasmota/tasmota/sendemail.ino

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#ifdef USE_SENDMAIL
#ifndef USE_ESP32MAIL
#include "sendemail.h"
// enable serial debugging
//#define DEBUG_EMAIL_PORT
// sendmail works only with server port 465 SSL and doesnt support STARTTLS (not supported in Arduino)
// only a couple of mailservers support this (e.g. gmail,gmx,yahoo,freenetmail)
// sendmail [server:port:user:passwd:from:to:subject] body
// sendmail [*:*:*:*:*:to:subject] data uses defines from user_config_overwrite
// #define EMAIL_USER "user"
// #define EMAIL_PASSWORD "passwd"
// #define EMAIL_FROM "<mr.x@gmail.com>"
// #define EMAIL_SERVER "smtp.gmail.com"
// #define EMAIL_PORT 465
// if email body consist of a single * and scripter is present
// and a section >m is found, the lines in this section (until #) are sent
// as email body
// sendmail works with pre2.6 using Light BearSSL
//HW Watchdog 8.44 sec.
//SW Watchdog 3.2 sec.
#ifndef SEND_MAIL_MINRAM
#define SEND_MAIL_MINRAM 12*1024
#endif
void script_send_email_body(void(*func)(char *));
#define xPSTR(a) a
uint16_t SendMail(char *buffer) {
char *params,*oparams;
const char *mserv;
uint16_t port;
const char *user;
const char *pstr;
const char *passwd;
const char *from;
const char *to;
const char *subject;
const char *cmd;
char auth=0;
uint16_t status=1;
SendEmail *mail=0;
uint16_t blen;
char *endcmd;
// return if not enough memory
uint16_t mem=ESP.getFreeHeap();
if (mem<SEND_MAIL_MINRAM) {
return 4;
}
while (*buffer==' ') buffer++;
if (*buffer!='[') {
goto exit;
}
buffer++;
endcmd=strchr(buffer,']');
if (!endcmd) {
goto exit;
}
// copy params
blen=(uint32_t)endcmd-(uint32_t)buffer;
oparams=(char*)calloc(blen+2,1);
if (!oparams) return 4;
params=oparams;
strncpy(oparams,buffer,blen+2);
oparams[blen]=0;
cmd=endcmd+1;
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("mailsize: %d"),blen);
#endif
mserv=strtok(params,":");
if (!mserv) {
goto exit;
}
// port
pstr=strtok(NULL,":");
if (!pstr) {
goto exit;
}
#ifdef EMAIL_PORT
if (*pstr=='*') {
port=EMAIL_PORT;
} else {
port=atoi(pstr);
}
#else
port=atoi(pstr);
#endif
user=strtok(NULL,":");
if (!user) {
goto exit;
}
passwd=strtok(NULL,":");
if (!passwd) {
goto exit;
}
from=strtok(NULL,":");
if (!from) {
goto exit;
}
to=strtok(NULL,":");
if (!to) {
goto exit;
}
subject=strtok(NULL,"]");
if (!subject) {
goto exit;
}
#ifdef EMAIL_USER
if (*user=='*') {
user=xPSTR(EMAIL_USER);
}
#endif
#ifdef EMAIL_PASSWORD
if (*passwd=='*') {
passwd=xPSTR(EMAIL_PASSWORD);
}
#endif
#ifdef EMAIL_SERVER
if (*mserv=='*') {
mserv=xPSTR(EMAIL_SERVER);
}
#endif //USE_SENDMAIL
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s - %d - %s - %s"),mserv,port,user,passwd);
#endif
// 2 seconds timeout
#ifndef MAIL_TIMEOUT
#define MAIL_TIMEOUT 2000
#endif
mail = new SendEmail(mserv,port,user,passwd, MAIL_TIMEOUT, auth);
#ifdef EMAIL_FROM
if (*from=='*') {
from=xPSTR(EMAIL_FROM);
}
#endif
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s - %s - %s - %s"),from,to,subject,cmd);
#endif
if (mail) {
bool result=mail->send(from,to,subject,cmd);
delete mail;
if (result==true) status=0;
}
exit:
if (oparams) free(oparams);
return status;
}
#ifdef ESP8266
WiFiClient *g_client;
SendEmail::SendEmail(const String& host, const int port, const String& user, const String& passwd, const int timeout, const int auth_used) :
host(host), port(port), user(user), passwd(passwd), timeout(timeout), ssl(ssl), auth_used(auth_used), client(new BearSSL::WiFiClientSecure_light(1024,1024)) {
}
#else
WiFiClient *g_client;
SendEmail::SendEmail(const String& host, const int port, const String& user, const String& passwd, const int timeout, const int auth_used) :
host(host), port(port), user(user), passwd(passwd), timeout(timeout), ssl(ssl), auth_used(auth_used), client(new WiFiClientSecure()) {
}
#endif
String SendEmail::readClient() {
delay(0);
String r = client->readStringUntil('\n');
r.trim();
while (client->available()) {
delay(0);
r += client->readString();
}
return r;
}
bool SendEmail::send(const String& from, const String& to, const String& subject, const char *msg) {
bool status=false;
String buffer;
if (!host.length()) {
return status;
}
client->setTimeout(timeout);
// smtp connect
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("Connecting: %s on port %d"),host.c_str(),port);
#endif
if (!client->connect(host.c_str(), port)) {
#ifdef DEBUG_EMAIL_PORT
AddLog_P(LOG_LEVEL_INFO, PSTR("Connection failed"));
#endif
goto exit;
}
buffer = readClient();
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
if (!buffer.startsWith(F("220"))) {
goto exit;
}
buffer = F("EHLO ");
buffer += client->localIP().toString();
client->println(buffer);
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
buffer = readClient();
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
if (!buffer.startsWith(F("250"))) {
goto exit;
}
if (user.length()>0 && passwd.length()>0 ) {
buffer = F("AUTH LOGIN");
client->println(buffer);
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
buffer = readClient();
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
if (!buffer.startsWith(F("334")))
{
goto exit;
}
base64 b;
buffer = b.encode(user);
client->println(buffer);
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
buffer = readClient();
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
if (!buffer.startsWith(F("334"))) {
goto exit;
}
buffer = b.encode(passwd);
client->println(buffer);
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
buffer = readClient();
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
if (!buffer.startsWith(F("235"))) {
goto exit;
}
}
// smtp send mail
buffer = F("MAIL FROM:");
buffer += from;
client->println(buffer);
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
buffer = readClient();
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
if (!buffer.startsWith(F("250"))) {
goto exit;
}
buffer = F("RCPT TO:");
buffer += to;
client->println(buffer);
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
buffer = readClient();
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
if (!buffer.startsWith(F("250"))) {
goto exit;
}
buffer = F("DATA");
client->println(buffer);
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
buffer = readClient();
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
if (!buffer.startsWith(F("354"))) {
goto exit;
}
buffer = F("From: ");
buffer += from;
client->println(buffer);
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
buffer = F("To: ");
buffer += to;
client->println(buffer);
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
buffer = F("Subject: ");
buffer += subject;
buffer += F("\r\n");
client->println(buffer);
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
#ifdef USE_SCRIPT
if (*msg=='*' && *(msg+1)==0) {
g_client=client;
script_send_email_body(xsend_message_txt);
} else {
client->println(msg);
}
#else
client->println(msg);
#endif
client->println('.');
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
buffer = F("QUIT");
client->println(buffer);
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s"),buffer.c_str());
#endif
status=true;
exit:
return status;
}
void xsend_message_txt(char *msg) {
g_client->println(msg);
}
#else
/*
* Created by K. Suwatchai (Mobizt)
*
* Email: k_suwatchai@hotmail.com
*
* Github: https://github.com/mobizt
*
* Copyright (c) 2019 mobizt
*
*/
//To use send Email for Gmail to port 465 (SSL), less secure app option should be enabled. https://myaccount.google.com/lesssecureapps?pli=1
//To receive Email for Gmail, IMAP option should be enabled. https://support.google.com/mail/answer/7126229?hl=en
#include "ESP32_MailClient.h"
#include "SD.h"
//For demo only
//#include "image.h"
#ifndef SEND_MAIL32_MINRAM
#define SEND_MAIL32_MINRAM 30*1024
#endif
void script_send_email_body(void(*func)(char *));
#define xPSTR(a) a
//The Email Sending data object contains config and data to send
SMTPData smtpData;
//Callback function to get the Email sending status
//void sendCallback(SendStatus info);
//#define DEBUG_EMAIL_PORT
uint16_t SendMail(char *buffer) {
char *params,*oparams;
const char *mserv;
uint16_t port;
const char *user;
const char *pstr;
const char *passwd;
const char *from;
const char *to;
const char *subject;
const char *cmd;
uint16_t status=1;
uint16_t blen;
char *endcmd;
// return if not enough memory
uint32_t mem=ESP.getFreeHeap();
AddLog_P2(LOG_LEVEL_INFO, PSTR("heap: %d"),mem);
if (mem<SEND_MAIL32_MINRAM) {
return 4;
}
while (*buffer==' ') buffer++;
if (*buffer!='[') {
goto exit;
}
buffer++;
endcmd=strchr(buffer,']');
if (!endcmd) {
goto exit;
}
// copy params
blen=(uint32_t)endcmd-(uint32_t)buffer;
oparams=(char*)calloc(blen+2,1);
if (!oparams) return 4;
params=oparams;
strncpy(oparams,buffer,blen+2);
oparams[blen]=0;
cmd=endcmd+1;
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("mailsize: %d"),blen);
#endif
mserv=strtok(params,":");
if (!mserv) {
goto exit;
}
// port
pstr=strtok(NULL,":");
if (!pstr) {
goto exit;
}
#ifdef EMAIL_PORT
if (*pstr=='*') {
port=EMAIL_PORT;
} else {
port=atoi(pstr);
}
#else
port=atoi(pstr);
#endif
user=strtok(NULL,":");
if (!user) {
goto exit;
}
passwd=strtok(NULL,":");
if (!passwd) {
goto exit;
}
from=strtok(NULL,":");
if (!from) {
goto exit;
}
to=strtok(NULL,":");
if (!to) {
goto exit;
}
subject=strtok(NULL,"]");
if (!subject) {
goto exit;
}
#ifdef EMAIL_USER
if (*user=='*') {
user=xPSTR(EMAIL_USER);
}
#endif
#ifdef EMAIL_PASSWORD
if (*passwd=='*') {
passwd=xPSTR(EMAIL_PASSWORD);
}
#endif
#ifdef EMAIL_SERVER
if (*mserv=='*') {
mserv=xPSTR(EMAIL_SERVER);
}
#endif
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s - %d - %s - %s"),mserv,port,user,passwd);
#endif
#ifdef EMAIL_FROM
if (*from=='*') {
from=xPSTR(EMAIL_FROM);
}
#endif
#ifdef DEBUG_EMAIL_PORT
AddLog_P2(LOG_LEVEL_INFO, PSTR("%s - %s - %s - %s"),from,to,subject,cmd);
#endif
smtpData.setDebug(true);
//Set the Email host, port, account and password
smtpData.setLogin(mserv, port, user, passwd);
//For library version 1.2.0 and later which STARTTLS protocol was supported,the STARTTLS will be
//enabled automatically when port 587 was used, or enable it manually using setSTARTTLS function.
//smtpData.setSTARTTLS(true);
//Set the sender name and Email
smtpData.setSender("ESP32",from);
//Set Email priority or importance High, Normal, Low or 1 to 5 (1 is highest)
smtpData.setPriority("High");
//Set the subject
smtpData.setSubject(subject);
#ifdef USE_SCRIPT
if (*cmd=='*' && *(cmd+1)==0) {
smtpData.clrMessage(true);
script_send_email_body(send_message_txt);
} else {
smtpData.setMessage(cmd, true);
}
#else
//Set the message - normal text or html format
smtpData.setMessage(cmd, true);
#endif
//Add recipients, can add more than one recipient
smtpData.addRecipient(to);
//Add attachments, can add the file or binary data from flash memory, file in SD card
//Data from internal memory
//smtpData.addAttachData("firebase_logo.png", "image/png", (uint8_t *)dummyImageData, sizeof dummyImageData);
//Add attach files from SD card
//Comment these two lines, if no SD card connected
//Two files that previousely created.
//smtpData.addAttachFile("/binary_file.dat");
//smtpData.addAttachFile("/text_file.txt");
//Add some custom header to message
//See https://tools.ietf.org/html/rfc822
//These header fields can be read from raw or source of message when it received)
//smtpData.addCustomMessageHeader("Date: Sat, 10 Aug 2019 21:39:56 -0700 (PDT)");
//Be careful when set Message-ID, it should be unique, otherwise message will not store
//smtpData.addCustomMessageHeader("Message-ID: <abcde.fghij@gmail.com>");
//Set the storage types to read the attach files (SD is default)
//smtpData.setFileStorageType(MailClientStorageType::SPIFFS);
#if defined (USE_SCRIPT) && defined(USE_SCRIPT_FATFS)
smtpData.setFileStorageType(MailClientStorageType::SD);
#endif
//smtpData.setSendCallback(sendCallback);
//Start sending Email, can be set callback function to track the status
if (!MailClient.sendMail(smtpData)) {
//Serial.println("Error sending Email, " + MailClient.smtpErrorReason());
AddLog_P2(LOG_LEVEL_INFO, PSTR("Error sending Email, %s"), MailClient.smtpErrorReason());
} else {
status=0;
}
//Clear all data from Email object to free memory
smtpData.empty();
exit:
if (oparams) free(oparams);
return status;
}
void send_message_txt(char *txt) {
if (*txt=='&') {
txt++;
smtpData.addAttachFile(txt);
} else if (*txt=='$') {
txt++;
#if defined(ESP32) && defined(USE_WEBCAM)
uint32_t cnt;
uint8_t *buff;
uint32_t len,picmax;
picmax=WcGetPicstore(-1,0);
cnt=*txt&7;
if (cnt<1 || cnt>picmax) cnt=1;
len=WcGetPicstore(cnt-1,&buff);
if (len) {
char str[12];
sprintf(str,"img_%1d.jpg",cnt+1);
smtpData.addAttachData(str, "image/jpg",buff,len);
}
#endif
} else {
smtpData.addMessage(txt);
}
}
/*
//Callback function to get the Email sending status
void sendCallback(SendStatus msg)
{
//Print the current status
Serial.println(msg.info());
//Do something when complete
if (msg.success())
{
Serial.println("----------------");
}
}
*/
#endif
#endif // USE_SENDMAIL
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