Add logging, including the json one

get infos from I've been pwned and the API on install.dm.gg/vpn-log.php

and send mail if there is anything strange

logs.go

@@ -1,11 +1,149 @@
 package main
 
 import (
+	"bytes"
+	"encoding/json"
+	"io/ioutil"
 	"log"
+	"net/http"
+	"net/smtp"
+	"text/template"
+	"time"
 )
 
-func (c *vpnSession) Log() error {
-	//TODO get asname & shit
-	log.Println(c)
+func (c *vpnSession) LogPrintln(v ...interface{}) {
+	log.Println(c.Login, c.IP, v)
+}
+
+func (s *OpenVpnMgt) Log(c *vpnSession) error {
+	if s.vpnlogUrl != "" {
+		if err := c.getASInfos(s.vpnlogUrl); err != nil {
+			log.Println(err)
+		}
+	}
+	jsonStr, err := json.Marshal(c)
+	if err != nil {
+		return err
+	}
+	log.Println(string(jsonStr))
+
+	if err := s.SendMail(c); err != nil {
+		log.Println(err)
+	}
+	return nil
+}
+
+func (c *vpnSession) getASInfos(vpnlogUrl string) error {
+	jsonStr, err := json.Marshal(c)
+	if err != nil {
+		return err
+	}
+
+	req, err := http.NewRequest("POST", vpnlogUrl, bytes.NewBuffer(jsonStr))
+	req.Header.Set("Content-Type", "application/json")
+
+	timeout := time.Duration(3 * time.Second)
+	client := http.Client{
+		Timeout: timeout,
+	}
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	body, _ := ioutil.ReadAll(resp.Body)
+	err = json.Unmarshal(body, c)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *OpenVpnMgt) MailTemplate(c *vpnSession) error {
+	var buf1 bytes.Buffer
+	var buf2 bytes.Buffer
+
+	tmpl, err := template.New("pwnTemplate").Parse(s.pwnTemplate)
+	if err != nil {
+		return err
+	}
+	if err := tmpl.Execute(&buf1, c); err != nil {
+		return err
+	}
+	c.pwnMail = buf1.String()
+
+	tmpl, err = template.New("newAsTemplate").Parse(s.newAsTemplate)
+	if err != nil {
+		return err
+	}
+	if err := tmpl.Execute(&buf2, c); err != nil {
+		return err
+	}
+
+	c.newAsMail = buf2.String()
+	return nil
+}
+
+func (s *OpenVpnMgt) SendMail(c *vpnSession) error {
+	if c.Mail == "" {
+		return nil
+	}
+
+	if (s.newAsTemplate == "" || !c.NewAS) &&
+		(s.pwnTemplate == "" || !c.PwnedPasswd) {
+		// can not send mail without template or cause
+		return nil
+	}
+
+	// needed for the templating
+	c.MailFrom = s.MailFrom
+	c.CcPwnPassword = s.CcPwnPassword
+
+	// complete the templates
+	if err := s.MailTemplate(c); err != nil {
+		return err
+	}
+
+	mail, err := smtp.Dial(s.mailRelay)
+	if err != nil {
+		return err
+	}
+	defer mail.Close()
+
+	if c.PwnedPasswd {
+		mail.Mail(s.MailFrom)
+		mail.Rcpt(c.Mail)
+		if c.TooMuchPwn && s.CcPwnPassword != "" {
+			mail.Rcpt(s.CcPwnPassword)
+		}
+		wc, err := mail.Data()
+		if err != nil {
+			return nil
+		}
+		defer wc.Close()
+		buf := bytes.NewBufferString(c.pwnMail)
+		if _, err = buf.WriteTo(wc); err != nil {
+			return err
+		}
+		wc.Close()
+	}
+
+	if c.NewAS {
+		mail.Mail(s.MailFrom)
+		mail.Rcpt(c.Mail)
+		wc, err := mail.Data()
+		if err != nil {
+			return nil
+		}
+		defer wc.Close()
+		buf := bytes.NewBufferString(c.newAsMail)
+		if _, err = buf.WriteTo(wc); err != nil {
+			return err
+		}
+		wc.Close()
+	}
+
 	return nil
 }