| package srslog |
| |
| import ( |
| "errors" |
| "io" |
| "net" |
| ) |
| |
| // unixSyslog opens a connection to the syslog daemon running on the |
| // local machine using a Unix domain socket. This function exists because of |
| // Solaris support as implemented by gccgo. On Solaris you can not |
| // simply open a TCP connection to the syslog daemon. The gccgo |
| // sources have a syslog_solaris.go file that implements unixSyslog to |
| // return a type that satisfies the serverConn interface and simply calls the C |
| // library syslog function. |
| func unixSyslog() (conn serverConn, err error) { |
| logTypes := []string{"unixgram", "unix"} |
| logPaths := []string{"/dev/log", "/var/run/syslog", "/var/run/log"} |
| for _, network := range logTypes { |
| for _, path := range logPaths { |
| conn, err := net.Dial(network, path) |
| if err != nil { |
| continue |
| } else { |
| return &localConn{conn: conn}, nil |
| } |
| } |
| } |
| return nil, errors.New("Unix syslog delivery error") |
| } |
| |
| // localConn adheres to the serverConn interface, allowing us to send syslog |
| // messages to the local syslog daemon over a Unix domain socket. |
| type localConn struct { |
| conn io.WriteCloser |
| } |
| |
| // writeString formats syslog messages using time.Stamp instead of time.RFC3339, |
| // and omits the hostname (because it is expected to be used locally). |
| func (n *localConn) writeString(framer Framer, formatter Formatter, p Priority, hostname, tag, msg string) error { |
| if framer == nil { |
| framer = DefaultFramer |
| } |
| if formatter == nil { |
| formatter = UnixFormatter |
| } |
| _, err := n.conn.Write([]byte(framer(formatter(p, hostname, tag, msg)))) |
| return err |
| } |
| |
| // close the (local) network connection |
| func (n *localConn) close() error { |
| return n.conn.Close() |
| } |