4 Commits

+20 -9
View File
@@ -10,6 +10,7 @@
// Use a single LDAP connection protected by a mutex
//
// v0.9.6 : add PID file
// v0.9.8 : Check MX format with regex
//
package main
@@ -21,6 +22,7 @@ import (
"log/syslog"
"net"
"os"
"regexp"
"strings"
"sync"
"time"
@@ -31,7 +33,10 @@ import (
)
const (
version = "0.9.7.1"
version = "0.9.8"
// Match le nom de domaine, soit les 2 dernieres chaines separees par un point.
// Peut aussi terminer par un point (Ex: srv.domaine.com. => domaine.com)
DomainRegexpFormat = `([0-9A-Za-z\-]*)\.([0-9A-Za-z\-]*)(?:\.)?$`
)
var (
@@ -85,11 +90,14 @@ func sendResponse(con net.Conn, respMsg string, respCode int) error {
func handleConnection(connClt net.Conn, conLdap *ldap.Conn) {
var s string
var mxdom string
buf := make([]byte, 1024)
re := regexp.MustCompile(DomainRegexpFormat)
// Close connection when this function ends
defer func() {
logstream.Info("Closing connection")
logstream.Debug("Closing connection")
connClt.Close()
}()
@@ -103,7 +111,7 @@ func handleConnection(connClt net.Conn, conLdap *ldap.Conn) {
readlen, err := connClt.Read(buf)
if err != nil {
// Dont notice if client closed connection
if err.Error() != "EOF" {
if err.Error() != "EOF" && !strings.HasSuffix(err.Error(), "i/o timeout") {
logstream.Err(fmt.Sprintln("Error reading connection :", err.Error()))
}
return
@@ -130,13 +138,16 @@ func handleConnection(connClt net.Conn, conLdap *ldap.Conn) {
continue
}
mxslic := strings.Split(mxs[0].Host, ".")
// les MXs terminent par '.', on le retire
if mxs[0].Host[len(mxs[0].Host)-1] == '.' {
mxdom = strings.Join(mxslic[len(mxslic)-3:len(mxslic)-1], ".")
} else {
mxdom = strings.Join(mxslic[len(mxslic)-2:len(mxslic)], ".")
// On recuperer le nom de domaine de 1er niveau
group := re.FindSubmatch([]byte(mxs[0].Host))
if len(group) < 3 || len(group[2]) == 0 {
logstream.Err(fmt.Sprintln("MX format incorrect: ", mxs[0].Host))
w
s := fmt.Sprintf("MX format incorrect: %s", err.Error())
sendResponse(connClt, s, 500)
continue
}
mxdom = string(group[1]) + "." + string(group[2])
filter := fmt.Sprintf("(dc=%s)", ldap.EscapeFilter(mxdom))
searchReq := ldap.NewSearchRequest(*ldapBaseDN, ldap.ScopeWholeSubtree, 0, 0, 0,