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Pike Module Reference:

module version 1.1, prepared

  MODULE Public
Modules
Protocols
  MODULE Public.Protocols
Modules
Syslog
  MODULE Public.Protocols.Syslog
Methods
decode()
decode_timestamp()
encode()
encode_timestamp()
send_message()
sloppy_decode()
Description

a module for decoding syslog messages (RFC 3164) because syslog messages are often improperly formatted (per the RFC) we have a number of levels of strictness.

Constants

constant Public.Protocols.Syslog.__author
constant Public.Protocols.Syslog.__version

Constant SYSLOG_PORT

constant Public.Protocols.Syslog.SYSLOG_PORT

Description

syslog port number
Constant FACILITY_KERNEL

constant Public.Protocols.Syslog.FACILITY_KERNEL

Description

kernel messages
Constant FACILITY_USER

constant Public.Protocols.Syslog.FACILITY_USER

Description

user-level messages
Constant FACILITY_MAIL

constant Public.Protocols.Syslog.FACILITY_MAIL

Description

mail system
Constant FACILITY_DAEMON

constant Public.Protocols.Syslog.FACILITY_DAEMON

Description

system daemons
Constant FACILITY_AUTH

constant Public.Protocols.Syslog.FACILITY_AUTH

Description

security/authorization messages
Constant FACILITY_SYSLOG

constant Public.Protocols.Syslog.FACILITY_SYSLOG

Description

messages generated internally by syslogd
Constant FACILITY_LP

constant Public.Protocols.Syslog.FACILITY_LP

Description

line printer subsystem
Constant FACILITY_NEWS

constant Public.Protocols.Syslog.FACILITY_NEWS

Description

network news subsystem
Constant FACILITY_UUCP

constant Public.Protocols.Syslog.FACILITY_UUCP

Description

UUCP subsystem
Constant FACILITY_CLOCK

constant Public.Protocols.Syslog.FACILITY_CLOCK

Description

clock daemon
Constant FACILITY_SECURITY

constant Public.Protocols.Syslog.FACILITY_SECURITY

Description

security/authorization messages
Constant FACILITY_FTP

constant Public.Protocols.Syslog.FACILITY_FTP

Description

FTP daemon
Constant FACILITY_NTP

constant Public.Protocols.Syslog.FACILITY_NTP

Description

NTP subsystem
Constant FACILITY_LOGAUDIT

constant Public.Protocols.Syslog.FACILITY_LOGAUDIT

Description

log audit
Constant FACILITY_LOGALERT

constant Public.Protocols.Syslog.FACILITY_LOGALERT

Description

log alert
Constant FACILITY_CLOCK2

constant Public.Protocols.Syslog.FACILITY_CLOCK2

Description

clock daemon
Constant FACILITY_LOCAL0

constant Public.Protocols.Syslog.FACILITY_LOCAL0

Description

local use 0 (local0)
Constant FACILITY_LOCAL1

constant Public.Protocols.Syslog.FACILITY_LOCAL1

Description

local use 1 (local1)
Constant FACILITY_LOCAL2

constant Public.Protocols.Syslog.FACILITY_LOCAL2

Description

local use 2 (local2)
Constant FACILITY_LOCAL3

constant Public.Protocols.Syslog.FACILITY_LOCAL3

Description

local use 3 (local3)
Constant FACILITY_LOCAL4

constant Public.Protocols.Syslog.FACILITY_LOCAL4

Description

local use 4 (local4)
Constant FACILITY_LOCAL5

constant Public.Protocols.Syslog.FACILITY_LOCAL5

Description

local use 5 (local5)
Constant FACILITY_LOCAL6

constant Public.Protocols.Syslog.FACILITY_LOCAL6

Description

local use 6 (local6)
Constant FACILITY_LOCAL7

constant Public.Protocols.Syslog.FACILITY_LOCAL7

Description

local use 7 (local7)
Constant SEVERITY_EMERGENCY

constant Public.Protocols.Syslog.SEVERITY_EMERGENCY

Description

Emergency: system is unusable
Constant SEVERITY_ALERT

constant Public.Protocols.Syslog.SEVERITY_ALERT

Description

Alert: action must be taken immediately
Constant SEVERITY_CRITICAL

constant Public.Protocols.Syslog.SEVERITY_CRITICAL

Description

Critical: critical conditions
Constant SEVERITY_ERROR

constant Public.Protocols.Syslog.SEVERITY_ERROR

Description

Error: error conditions
Constant SEVERITY_WARNING

constant Public.Protocols.Syslog.SEVERITY_WARNING

Description

Warning: warning conditions
Constant SEVERITY_NOTICE

constant Public.Protocols.Syslog.SEVERITY_NOTICE

Description

Notice: normal but significant condition
Constant SEVERITY_INFO

constant Public.Protocols.Syslog.SEVERITY_INFO

Description

Informational: informational messages
Constant SEVERITY_DEBUG

constant Public.Protocols.Syslog.SEVERITY_DEBUG

Description

Debug: debug-level messages
Method sloppy_decode

mapping Public.Protocols.Syslog.sloppy_decode(string packet)

Description

decode a syslog message, as long as it has a proper facility/severity code.

Parameter packet

a string containing the raw syslog packet

Returns

a mapping of decoded data, consisting of the facility, severity and message of the balance of the syslog packet (presumably the message)

facility : int
severity : int
message : string
Method decode

mapping Public.Protocols.Syslog.decode(string packet)

Description

strictly decode a syslog message, requiring all fields

Parameter packet

a string containing the raw syslog packet

Returns

a mapping containing the decoded syslog message, or zero if the message was not properly formatted.

facility : int
severity : int
host : string
timestamp : object

a Calendar.Time object

message : string
Example
> Syslog.decode("<11>Aug  7 17:36:10 localhost joeuser: [ID 702911 user.error] test syslog message");
 (1) Result: 
 ([ /* 6 elements */
    "facility":1,
    "host":"localhost",
    "message":"[ID 702911 user.error] test syslog message",
    "severity":3,
    "timestamp":"Aug  7 17:36:10"
  ])
Method decode_timestamp

object Public.Protocols.Syslog.decode_timestamp(string stamp)

Description

returns a Calendar.Time object corresponding to the syslog timestamp input.

Example
> Syslog.decode_timestamp(Syslog.decode(packet)->timestamp);
  (1) Result: Second(Thu 7 Aug 2003 17:30:50 EDT)
Method encode_timestamp

string Public.Protocols.Syslog.encode_timestamp(object stamp)

Description

returns a syslog time string corresponding to the Calendar.Time object input.

Example
> Syslog.encode_timestamp(Calendar.now());
  (4) Result: "Aug  7 17:33:19"
Method encode

string|int Public.Protocols.Syslog.encode(mapping data)

Description

encode a syslog message

Parameter data
facility : int
severity : int
host : string
timestamp : object
message : string
Returns

a raw syslog packet suitable for sending to syslogd.
Method send_message

int Public.Protocols.Syslog.send_message(string host, int facility, int severity, string message, string|void fromhost, string|void tag, object|void timestamp)

Description

send a syslog message

Parameter host

host to send the message to

Parameter facility

facility code

Parameter severity

severity code

Parameter message

the message

Parameter fromhost

an optional hostname or address from which the message should be marked as being from. if not specified, the value of gethostname() is provided.

Parameter tag

an optional string containing the tag of the sender

Parameter timestamp

an optional Calendar.Time object representing the time the event occurred if not specified, the time is assumed to be Calendar.now().

Returns

1 on success, 0 otherwise.
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