Add possibility to encode mail subject and body to base64

README.md

@@ -58,3 +58,16 @@ This is a sample JSON passed as HTTP-POST request to the 443 port (configured ab
         }
     }
 
+You can encode subject and bodyhtml in base64 if the data contains special characters
+
+    {
+        "sendmail": {
+            "from": "sampleuser@gmail.com",
+            "to": "tomyfriend@postmail.com",
+            "subject": "VGVzdCBmcm9tIFBIUA==",
+            "subjectEncoding": "base64",
+            "bodyhtml": "VGhpcyBpcyByZWNlaXZlZCB0aHJvdWdoIDxoMT5SZXN0R29NYWlsPC9oMT4=",
+            "bodyhtmlEncoding": "base64"
+        }
+    }
+

restgomail.go

@@ -274,6 +274,8 @@ func processRequest(req *[]byte, remote string) bool {
 	to, toType := jsonmsg.getStringByPath("sendmail/to")
 	subject, subjectType := jsonmsg.getStringByPath("sendmail/subject")
 	bodyhtml, bodyhtmlType := jsonmsg.getStringByPath("sendmail/bodyhtml")
+	subjectEnc := jsonmsg.getStringByPathWithDefault("sendmail/subjectEncoding", "none")
+	bodyhtmlEnc := jsonmsg.getStringByPathWithDefault("sendmail/bodyhtmlEncoding", "none")
 
 	if fromType == "none" || toType == "none" ||
 		subjectType == "none" || bodyhtmlType == "none" {
@@ -286,6 +288,22 @@ func processRequest(req *[]byte, remote string) bool {
 		}
 		return true
 	}
+	if subjectEnc == "base64" {
+		dec, err := base64.StdEncoding.DecodeString(subject)
+		if err != nil {
+			log.Printf("Error (%s) base64 decoding error (1)\n", remote)
+			return true
+		}
+		subject = string(dec)
+	}
+	if bodyhtmlEnc == "base64" {
+		dec, err := base64.StdEncoding.DecodeString(bodyhtml)
+		if err != nil {
+			log.Printf("Error (%s) base64 decoding error (2)\n", remote)
+			return true
+		}
+		bodyhtml = string(dec)
+	}
 
 	log.Printf("Received send mail request from %s\n", remote)
 	allowedSnAddr := getConfigString("smtpAllowedFromAddressOnly")