mirror of
https://github.com/letscontrolit/ESPEasy.git
synced 2026-09-12 01:24:04 +00:00
323 lines
10 KiB
C++
323 lines
10 KiB
C++
#include "ESPEasy_common.h"
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#ifdef USES_N001
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// #######################################################################################################
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// ########################### Notification Plugin 001: Email ############################################
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// #######################################################################################################
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/** Changelog:
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* 2022-12-29 tonhuisman: Add Date: field to email header to reduce spam score, see https://github.com/letscontrolit/ESPEasy/issues/3865
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* 2022-12-29 tonhuisman: Start changelog
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*/
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# define NPLUGIN_001
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# define NPLUGIN_ID_001 1
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# define NPLUGIN_NAME_001 "Email (SMTP)"
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# define NPLUGIN_001_TIMEOUT 5000
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# include "src/DataStructs/ESPEasy_EventStruct.h"
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# include "src/DataStructs/NotificationSettingsStruct.h"
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# include "src/ESPEasyCore/ESPEasy_Log.h"
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# include "src/ESPEasyCore/ESPEasy_backgroundtasks.h"
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# include "src/Globals/NPlugins.h"
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# include "src/Globals/Settings.h"
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# include "src/Helpers/ESPEasy_Storage.h"
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# include "src/Helpers/ESPEasy_time_calc.h"
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# include "src/Helpers/Networking.h"
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# include "src/Helpers/StringGenerator_System.h"
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# include "src/Helpers/StringParser.h"
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# include "src/Helpers/_CPlugin_Helper.h" // safeReadStringUntil
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# include "src/Helpers/_NPlugin_init.h"
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# include <base64.h>
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// Forward declaration
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bool NPlugin_001_send(const NotificationSettingsStruct& notificationsettings,
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const String & aSub,
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String & aMesg);
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bool NPlugin_001_Auth(WiFiClient & client,
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const String& user,
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const String& pass);
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bool NPlugin_001_MTA(WiFiClient & client,
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const String& aStr,
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uint16_t aWaitForPattern);
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bool getNextMailAddress(const String& data,
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String & address,
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int index);
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// The message body is included in event->String1
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bool NPlugin_001(NPlugin::Function function, struct EventStruct *event, String& string)
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{
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bool success = false;
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switch (function) {
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case NPlugin::Function::NPLUGIN_PROTOCOL_ADD:
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{
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Notification[++notificationCount].Number = NPLUGIN_ID_001;
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Notification[notificationCount].usesMessaging = true;
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Notification[notificationCount].usesGPIO = 0;
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break;
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}
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case NPlugin::Function::NPLUGIN_GET_DEVICENAME:
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{
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string = F(NPLUGIN_NAME_001);
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break;
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}
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// Edwin: NPlugin::Function::NPLUGIN_WRITE seems to be not implemented/not used yet? Disabled because its confusing now.
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// case NPlugin::Function::NPLUGIN_WRITE:
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// {
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// String log;
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// String command = parseString(string, 1);
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//
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// if (command == F("email"))
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// {
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// MakeNotificationSettings(NotificationSettings);
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// LoadNotificationSettings(event->NotificationIndex, (uint8_t*)&NotificationSettings, sizeof(NotificationSettingsStruct));
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// NPlugin_001_send(NotificationSettings.Domain, NotificationSettings.Receiver, NotificationSettings.Sender,
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// NotificationSettings.Subject, NotificationSettings.Body, NotificationSettings.Server, NotificationSettings.Port);
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// success = true;
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// }
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// break;
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// }
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case NPlugin::Function::NPLUGIN_NOTIFY:
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{
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MakeNotificationSettings(NotificationSettings);
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LoadNotificationSettings(event->NotificationIndex, (uint8_t *)&NotificationSettings, sizeof(NotificationSettingsStruct));
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NotificationSettings.validate();
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String subject = NotificationSettings.Subject;
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String body;
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if (event->String1.length() > 0) {
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body = event->String1;
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}
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else {
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body = NotificationSettings.Body;
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}
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subject = parseTemplate(subject);
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body = parseTemplate(body);
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NPlugin_001_send(NotificationSettings, subject, body);
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success = true;
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break;
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}
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default:
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break;
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}
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return success;
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}
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bool NPlugin_001_send(const NotificationSettingsStruct& notificationsettings, const String& aSub, String& aMesg)
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{
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// String& aDomain , String aTo, String aFrom, String aSub, String aMesg, String aHost, int aPort)
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bool myStatus = false;
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// Use WiFiClient class to create TCP connections
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WiFiClient client;
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# ifdef MUSTFIX_CLIENT_TIMEOUT_IN_SECONDS
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// See: https://github.com/espressif/arduino-esp32/pull/6676
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client.setTimeout((CONTROLLER_CLIENTTIMEOUT_MAX + 500) / 1000); // in seconds!!!!
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Client *pClient = &client;
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pClient->setTimeout(CONTROLLER_CLIENTTIMEOUT_MAX);
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# else // ifdef MUSTFIX_CLIENT_TIMEOUT_IN_SECONDS
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client.setTimeout(CONTROLLER_CLIENTTIMEOUT_MAX); // in msec as it should be!
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# endif // ifdef MUSTFIX_CLIENT_TIMEOUT_IN_SECONDS
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String aHost = notificationsettings.Server;
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#ifndef BUILD_NO_DEBUG
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if (loglevelActiveFor(LOG_LEVEL_DEBUG)) {
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addLog(LOG_LEVEL_DEBUG, String(F("EMAIL: Connecting to ")) + aHost + notificationsettings.Port);
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}
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#endif
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if (!connectClient(client, aHost.c_str(), notificationsettings.Port, CONTROLLER_CLIENTTIMEOUT_DFLT)) {
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if (loglevelActiveFor(LOG_LEVEL_ERROR)) {
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addLog(LOG_LEVEL_ERROR, String(F("EMAIL: Error connecting to ")) + aHost + notificationsettings.Port);
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}
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myStatus = false;
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} else {
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String mailheader = F(
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"From: $nodename <$emailfrom>\r\n"
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"To: $ato\r\n"
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"Subject: $subject\r\n"
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"Reply-To: $nodename <$emailfrom>\r\n"
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"Date: $date\r\n"
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"MIME-VERSION: 1.0\r\n"
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"Content-type: text/html; charset=UTF-8\r\n"
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"X-Mailer: EspEasy v$espeasyversion\r\n\r\n"
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);
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String email_address = notificationsettings.Sender;
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int pos_less = email_address.indexOf('<');
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if (pos_less == -1) {
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// No email address markup
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mailheader.replace(F("$nodename"), Settings.getHostname());
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mailheader.replace(F("$emailfrom"), notificationsettings.Sender);
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} else {
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String senderName = email_address.substring(0, pos_less);
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removeChar(senderName, '"'); // Remove quotes
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String address = email_address.substring(pos_less + 1);
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removeChar(address, '<');
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removeChar(address, '>');
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address.trim();
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senderName.trim();
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mailheader.replace(F("$nodename"), senderName);
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mailheader.replace(F("$emailfrom"), address);
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}
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mailheader.replace(F("$nodename"), Settings.getHostname());
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mailheader.replace(F("$emailfrom"), notificationsettings.Sender);
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mailheader.replace(F("$ato"), notificationsettings.Receiver);
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mailheader.replace(F("$subject"), aSub);
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String dateFmtHdr = F("%sysweekday_s%, %sysday_0% %sysmonth_s% %sysyear% %systime% %systzoffset%");
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String date = parseTemplate(dateFmtHdr);
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mailheader.replace(F("$date"), date);
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mailheader.replace(F("$espeasyversion"), getSystemBuildString());
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aMesg.replace(F("\r"), F("<br/>")); // re-write line breaks for Content-type: text/html
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// Wait for Client to Start Sending
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// The MTA Exchange
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while (true) {
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if (!NPlugin_001_MTA(client, EMPTY_STRING, 220)) { break; }
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if (!NPlugin_001_MTA(client, concat(F("EHLO "), String(notificationsettings.Domain)), 250)) { break; }
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if (!NPlugin_001_Auth(client, notificationsettings.User, notificationsettings.Pass)) { break; }
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if (!NPlugin_001_MTA(client, concat(F("MAIL FROM:<"), String(notificationsettings.Sender) + '>') , 250)) { break; }
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bool nextAddressAvailable = true;
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int i = 0;
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String emailTo;
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const String receiver(notificationsettings.Receiver);
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if (!getNextMailAddress(receiver, emailTo, i)) {
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addLog(LOG_LEVEL_ERROR, F("Email: No recipient given"));
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break;
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}
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while (nextAddressAvailable) {
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if (loglevelActiveFor(LOG_LEVEL_INFO)) {
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addLogMove(LOG_LEVEL_INFO, concat(F("Email: To "), emailTo));
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}
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if (!NPlugin_001_MTA(client, concat(F("RCPT TO:<"), emailTo + '>'), 250)) { break; }
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++i;
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nextAddressAvailable = getNextMailAddress(receiver, emailTo, i);
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}
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if (!NPlugin_001_MTA(client, F("DATA"), 354)) { break; }
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if (!NPlugin_001_MTA(client, mailheader + aMesg + F("\r\n.\r\n"), 250)) { break; }
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myStatus = true;
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break;
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}
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client.flush();
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client.stop();
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if (myStatus == true) {
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addLog(LOG_LEVEL_INFO, F("EMAIL: Connection Closed Successfully"));
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} else {
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if (loglevelActiveFor(LOG_LEVEL_ERROR)) {
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addLogMove(LOG_LEVEL_ERROR, concat(F("EMAIL: Connection Closed With Error. Used header: "), mailheader));
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}
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}
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}
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return myStatus;
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}
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bool NPlugin_001_Auth(WiFiClient& client, const String& user, const String& pass)
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{
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if (user.isEmpty() || pass.isEmpty()) {
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// No user/password given.
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return true;
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}
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base64 encoder;
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return NPlugin_001_MTA(client, F("AUTH LOGIN"), 334) &&
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NPlugin_001_MTA(client, encoder.encode(user), 334) &&
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NPlugin_001_MTA(client, encoder.encode(pass), 235);
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}
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bool NPlugin_001_MTA(WiFiClient& client, const String& aStr, uint16_t aWaitForPattern)
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{
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#ifndef BUILD_NO_DEBUG
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if (loglevelActiveFor(LOG_LEVEL_DEBUG)) {
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addLog(LOG_LEVEL_DEBUG, aStr);
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}
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#endif
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if (aStr.length()) { client.println(aStr); }
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// Wait For Response
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unsigned long timer = millis() + NPLUGIN_001_TIMEOUT;
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backgroundtasks();
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const String aWaitForPattern_str = String(aWaitForPattern) + ' ';
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while (true) {
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if (timeOutReached(timer)) {
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if (loglevelActiveFor(LOG_LEVEL_ERROR)) {
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String log = F("NPlugin_001_MTA: timeout. ");
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log += aStr;
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addLogMove(LOG_LEVEL_ERROR, log);
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}
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return false;
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}
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delay(0);
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// String line = client.readStringUntil('\n');
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String line;
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safeReadStringUntil(client, line, '\n');
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const bool patternFound = line.indexOf(aWaitForPattern_str) >= 0;
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# ifndef BUILD_NO_DEBUG
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if (loglevelActiveFor(LOG_LEVEL_DEBUG)) {
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addLogMove(LOG_LEVEL_DEBUG, line);
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}
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# endif // ifndef BUILD_NO_DEBUG
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if (patternFound) {
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return true;
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}
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}
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return false;
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}
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bool getNextMailAddress(const String& data, String& address, int index)
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{
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int found = 0;
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int strIndex[] = { 0, -1 };
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const int maxIndex = data.length() - 1;
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for (int i = 0; i <= maxIndex && found <= index; i++) {
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if ((data.charAt(i) == ',') || (i == maxIndex)) {
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found++;
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strIndex[0] = strIndex[1] + 1;
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strIndex[1] = (i == maxIndex) ? i + 1 : i;
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}
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}
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if (found > index) {
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address = data.substring(strIndex[0], strIndex[1]);
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return true;
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}
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return false;
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}
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#endif // ifdef USES_N001
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