diff --git a/libbsm.go b/libbsm.go
index 5e1376f..42ac5e8 100644
--- a/libbsm.go
+++ b/libbsm.go
@@ -114,9 +114,11 @@ const (
 
 
   // Display control
-  PRT_ONELINE =        1
-  PRT_NORESOLVE_USER = 2
-  PRT_TIMESTAMP =      4
+  PRT_ONELINE =         1
+  PRT_NORESOLVE_USER =  2
+  PRT_TIMESTAMP =       4
+  PRT_JSON =            8
+  PRT_JSON_PRETTY =    16
 )
 
 var (
@@ -148,60 +150,60 @@ type Record interface {
 }
 
 type Header32 struct {
-  Size    uint32  // Record byte count
-  Version uint8   // version # (uchar)
-  E_type  uint16  // Event type
-  E_mod   uint16  // Event modifier
-  S       uint32  // Seconds of time
-  Msec    uint32  // Milliseconds of time
+  Size    uint32  `json:"size"`           // Record byte count
+  Version uint8   `json:"version"`        // version # (uchar)
+  E_type  uint16  `json:"event_type"`     // Event type
+  E_mod   uint16  `json:"event_modifier"` // Event modifier
+  S       uint32  `json:"timestamp"`      // Seconds of time
+  Msec    uint32  `json:"msec"`           // Milliseconds of time
 }
 
 type Header32Ex struct {
-  Size    uint32    // Record byte count
-  Version uint8     // version # (uchar)
-  E_type  uint16    // Event type
-  E_mod   uint16    // Event modifier
-  Ad_type uint32    // Address type/Length
-  Addr    [4]uint32 // Ipv4 or IPv6
-  S       uint32    // Seconds of time
-  Msec    uint32    // Milliseconds of time
+  Size    uint32    `json:"size"`           // Record byte count
+  Version uint8     `json:"version"`        // version # (uchar)
+  E_type  uint16    `json:"event_type"`     // Event type
+  E_mod   uint16    `json:"event_modifier"` // Event modifier
+  Ad_type uint32    `json:"address_type"`   // Address type/Length
+  Addr    [4]uint32 `json:"address"`        // Ipv4 or IPv6
+  S       uint32    `json:"timestamp"`      // Seconds of time
+  Msec    uint32    `json:"msec"`           // Milliseconds of time
 }
 
 type Trailer struct {
-  Magic uint16
-  Count uint32
+  Magic uint16  `json:"magic"`
+  Count uint32  `json:"size"`
 }
 
 type Arg32 struct {
-  No     byte    // Argument #
-  Val    uint32  // Argument value
-  Length uint16  // Text length
-  Text   []byte  // Text
+  No     byte    `json:"count"`  // Argument #
+  Val    uint32  `json:"value"`  // Argument value
+  Length uint16  `json:"lentgh"` // Text length
+  Text   []byte  `json:"text"`   // Text
 }
 
 type Arg64 struct {
-  No     byte    // Argument #
-  Val    uint64  // Argument value
-  Length uint16  // Text length
-  Text   []byte  // Text
+  No     byte    `json:"count"`  // Argument #
+  Val    uint64  `json:"value"`  // Argument value
+  Length uint16  `json:"lentgh"` // Text length
+  Text   []byte  `json:"text"`   // Text
 }
 
 type Attribute32 struct {
-  Mode uint32  // file access mode
-  Uid  uint32  // Owner user ID
-  Gid  uint32  // Owner group ID
-  Fsid uint32  // File system ID
-  Nid  uint64  // Node ID
-  Dev  uint32  // Device
+  Mode uint32  `json:"mode"`          // file access mode
+  Uid  uint32  `json:"user_id"`       // Owner user ID
+  Gid  uint32  `json:"group_id"`      // Owner group ID
+  Fsid uint32  `json:"filesystem_id"` // File system ID
+  Nid  uint64  `json:"node_id"`       // Node ID
+  Dev  uint32  `json:"device"`        // Device
 }
 
 type Attribute64 struct {
-  Mode uint32  // file access mode
-  Uid  uint32  // Owner user ID
-  Gid  uint32  // Owner group ID
-  Fsid uint32  // File system ID
-  Nid  uint64  // Node ID
-  Dev  uint64  // Device
+  Mode uint32  `json:"mode"`          // file access mode
+  Uid  uint32  `json:"user_id"`       // Owner user ID
+  Gid  uint32  `json:"group_id"`      // Owner group ID
+  Fsid uint32  `json:"filesystem_id"` // File system ID
+  Nid  uint64  `json:"node_id"`       // Node ID
+  Dev  uint64  `json:"device"`        // Device
 }
 
 /*
@@ -209,114 +211,114 @@ type Attribute64 struct {
 * text                    count null-terminated string(s)
 */
 type ExecArg struct {
-  Count  uint32
+  Count  uint32   `json:"count"`
 //Text  [AUDIT_MAX_ARGS][]byte
-  Text  [][]byte
+  Text  [][]byte  `json:"text"`
 }
 
 type Path struct {
-  Length uint16  // path length
-  Path  []byte
+  Length uint16  `json:"length"` // path length
+  Path  []byte   `json:"path"`
 }
 
 type Return32 struct {
-  Status byte    // Error status
-  Ret    uint32  // Return code
+  Status byte    `json:"status"` // Error status
+  Ret    uint32  `json:"code"`   // Return code
 }
 
 type Return64 struct {
-  Status byte    // Error status
-  Ret    uint64  // Return code
+  Status byte    `json:"status"` // Error status
+  Ret    uint64  `json:"code"`   // Return code
 }
 
 type Subject32 struct {
-  Auid uint32  // Audit ID
-  Euid uint32  // Effective user ID
-  Egid uint32  // Effective Group ID
-  Ruid uint32  // Real User ID
-  Rgid uint32  // Real Group ID
-  Pid  uint32  // Process ID
-  Sid  uint32  // Session ID
-  Tid  Tid32
+  Auid uint32  `json:"audit_id"`           // Audit ID
+  Euid uint32  `json:"effective_user_id"`  // Effective user ID
+  Egid uint32  `json:"effective_group_id"` // Effective Group ID
+  Ruid uint32  `json:"real_user_id"`       // Real User ID
+  Rgid uint32  `json:"real_group_id"`      // Real Group ID
+  Pid  uint32  `json:"process_id"`         // Process ID
+  Sid  uint32  `json:"session_id"`         // Session ID
+  Tid  Tid32   `json:"terminal_id"`
 }
 
 type Process32 Subject32
 
 type Subject32Ex struct {
-  Auid uint32  // Audit ID
-  Euid uint32  // Effective user ID
-  Egid uint32  // Effective Group ID
-  Ruid uint32  // Real User ID
-  Rgid uint32  // Real Group ID
-  Pid  uint32  // Process ID
-  Sid  uint32  // Session ID
-  Tid  Tid32Ex
+  Auid uint32  `json:"audit_id"`           // Audit ID
+  Euid uint32  `json:"effective_user_id"`  // Effective user ID
+  Egid uint32  `json:"effective_group_id"` // Effective Group ID
+  Ruid uint32  `json:"real_user_id"`       // Real User ID
+  Rgid uint32  `json:"real_group_id"`      // Real Group ID
+  Pid  uint32  `json:"process_id"`         // Process ID
+  Sid  uint32  `json:"session_id"`         // Session ID
+  Tid  Tid32Ex `json:"terminal_id_ex"`
 }
 
 type Process32Ex Subject32Ex
 
 type Tid32 struct {
-  Port   uint32
-  IpVers uint32  // 0x10 = IPv6
-  Addr   uint32
+  Port   uint32  `json:"port"`
+  IpVers uint32  `json:"ip_version"` // 0x10 = IPv6
+  Addr   uint32  `json:"ip"`
 }
 
 type Tid32Ex struct {
-  Port   uint32
-  Ttype  uint32
-  IpVers uint32     // 0x10 = IPv6, 0x04 = IPv4
-  Addr4  uint32     // 4 bytes long if IpVers == 0x04
-  Addr6  [4]uint32  // 4x4 bytes long if IpVers == 0x10
+  Port   uint32    `json:"port"`
+  Ttype  uint32    `json:"terminal_type"` 
+  IpVers uint32    `json:"ip_version"`    // 0x10 = IPv6, 0x04 = IPv4
+  Addr4  uint32    `json:"ip4"`           // 4 bytes long if IpVers == 0x04
+  Addr6  [4]uint32 `json:"ip6"`           // 4x4 bytes long if IpVers == 0x10
 }
 
 type Subject64 struct {
-  Auid uint32  // Audit ID
-  Euid uint32  // Effective user ID
-  Egid uint32  // Effective Group ID
-  Ruid uint32  // Real User ID
-  Rgid uint32  // Real Group ID
-  Pid  uint32  // Process ID
-  Sid  uint32  // Session ID
-  Tid  Tid64
+  Auid uint32  `json:"audit_id"`           // Audit ID
+  Euid uint32  `json:"effective_user_id"`  // Effective user ID
+  Egid uint32  `json:"effective_group_id"` // Effective Group ID
+  Ruid uint32  `json:"real_user_id"`       // Real User ID
+  Rgid uint32  `json:"real_group_id"`      // Real Group ID
+  Pid  uint32  `json:"process_id"`         // Process ID
+  Sid  uint32  `json:"session_id"`         // Session ID
+  Tid  Tid64   `json:"terminal_id"`
 }
 
 type Process64 Subject64
 
 type Subject64Ex struct {
-  Auid uint32   // Audit ID
-  Euid uint32   // Effective user ID
-  Egid uint32   // Effective Group ID
-  Ruid uint32   // Real User ID
-  Rgid uint32   // Real Group ID
-  Pid  uint32   // Process ID
-  Sid  uint32   // Session ID
-  Tid  Tid64Ex
+  Auid uint32   `json:"audit_id"`           // Audit ID
+  Euid uint32   `json:"effective_user_id"`  // Effective user ID
+  Egid uint32   `json:"effective_group_id"` // Effective Group ID
+  Ruid uint32   `json:"real_user_id"`       // Real User ID
+  Rgid uint32   `json:"real_group_id"`      // Real Group ID
+  Pid  uint32   `json:"process_id"`         // Process ID
+  Sid  uint32   `json:"session_id"`         // Session ID
+  Tid  Tid64Ex  `json:"terminal_id_ex"`
 }
 
 type Process64Ex Subject64Ex
 
 type Tid64 struct {
-  Port   uint64
-  IpVers uint32
-  Addr   uint32
+  Port   uint64  `json:"port"`
+  IpVers uint32  `json:"ip_version"`
+  Addr   uint32  `json:"ip"`
 }
 
 type Tid64Ex struct {
-  Port   uint64
-  Ttype  uint32
-  IpVers uint32     // 0x10 = IPv6, 0x04 = IPv4
-  Addr4  uint32
-  Addr6  [4]uint32
+  Port   uint64    `json:"port"`
+  Ttype  uint32    `json:"terminal_type"` 
+  IpVers uint32    `json:"ip_version"`    // 0x10 = IPv6, 0x04 = IPv4
+  Addr4  uint32    `json:"ip4"`           
+  Addr6  [4]uint32 `json:"ip6"`           
 }
 
 type Exit struct {
-  Status uint32
-  Ret    uint32
+  Status uint32  `json:"status"`
+  Ret    uint32  `json:"code"`
 }
 
 type Text struct {
-  Length uint16
-  Text   []byte
+  Length uint16  `json:"length"`
+  Text   []byte  `json:"text"`
 }
 
 
@@ -533,6 +535,44 @@ func (h *Header32) Print(file *os.File, delimiter string, flags int) {
 	}
 }
 
+func (h *Header32) PrintJson(file *os.File, flags int) {
+	var timeval string
+	if PRT_TIMESTAMP == flags & PRT_TIMESTAMP {
+		timeval = strconv.Itoa(int(h.S))
+	} else {
+		t := time.Unix((int64)(h.S), 0)
+		timeval = t.Format(time.UnixDate)
+	}
+	// We dont care for error
+	evdesc, _ := getEventName(h.E_type)
+	/*fmt.Fprintf(file, "header%s%d%s%d%s%s%s%v%s%s%s%d", delimiter, h.Size, delimiter, h.Version, delimiter,
+				//h.E_type, delimiter, h.E_mod, delimiter, t.Format(time.UnixDate), delimiter, h.Msec)
+				evdesc, delimiter, h.E_mod, delimiter, timeval, delimiter, h.Msec)*/
+
+
+/*
+type Header32 struct {
+  Size    uint32  `json:"size"`           // Record byte count
+  Version uint8   `json:"version"`        // version # (uchar)
+  E_type  uint16  `json:"event_type"`     // Event type
+  E_mod   uint16  `json:"event_modifier"` // Event modifier
+  S       uint32  `json:"timestamp"`      // Seconds of time
+  Msec    uint32  `json:"msec"`           // Milliseconds of time
+}
+*/
+
+  // 1. convert to json
+  json := fmt.Sprintf("\"size\":%d,\"version\":%d,\"event_type\":\"%s\",event_modifier\":\"%s\",\"timestamp\":%d,\"msec\":%d,",
+                      h.Size, h.Version, evdesc, h.E_mod, h.S, h.Msec)
+  // 2. Prettify if flag is set
+       
+	if flags == (flags & PRT_JSON_PRETTY) {
+    fmt.Fprintf(file, "NOT IMPLEMENTED\n")
+	} else {
+		fmt.Fprintf(file, "%s", json)
+	}
+}
+
 func NewExecArg(e ExecArg) *ExecArg {
 	return &ExecArg{
 		Count:	e.Count,