lua-eco

• Index

Contents

• Functions

Modules

• eco
• eco.time
• eco.log
• eco.file
• eco.sys
• eco.sync
• eco.channel
• eco.shared
• eco.uci
• eco.ubus
• eco.socket
• eco.packet
• eco.dns
• eco.ssl
• eco.mqtt
• eco.net
• eco.nl
• eco.genl
• eco.rtnl
• eco.ip
• eco.nl80211
• eco.websocket
• eco.termios
• eco.ssh
• eco.http.server
• eco.http.client
• eco.encoding.hex
• eco.encoding.base64
• eco.hash.md5
• eco.hash.sha1
• eco.hash.sha256
• eco.hash.hmac

Topics

• README

Examples

• channel.lua
• coroutine.lua
• dns.lua
• base64.lua
• hex.lua
• env.lua
• exec.lua
• shell.lua
• dir.lua
• file.lua
• flock.lua
• inotify.lua
• walk.lua
• hmac.lua
• md5.lua
• sha1.lua
• sha256.lua
• hook.lua
• download_file.lua
• get.lua
• post.lua
• post_file.lua
• post_form.lua
• server.lua
• server_multiprocess.lua
• log.lua
• mqtt.lua
• custom-proto.lua
• genl_get_family.lua
• ip-addr-add.lua
• ip-addr-del.lua
• ip-addr-get.lua
• ip-link.lua
• link_del.lua
• link_dump.lua
• link_event.lua
• nl80211_add_interface.lua
• nl80211_del_interface.lua
• nl80211_dump_interface.lua
• nl80211_dump_station.lua
• nl80211_get_freqlist.lua
• nl80211_get_interface.lua
• nl80211_get_station.lua
• nl80211_scan.lua
• nl80211_set_interface.lua
• route_event.lua
• panic_hook.lua
• send-at-command.lua
• shared.lua
• signal.lua
• ping.lua
• ping6.lua
• recver.lua
• sender.lua
• arp-scan.lua
• arping.lua
• capture.lua
• send_tcp.lua
• send_udp.lua
• socketpair_dgram.lua
• socketpair_fork.lua
• socketpair_stream.lua
• client.lua
• server.lua
• client.lua
• server.lua
• client.lua
• dgram_client.lua
• dgram_server.lua
• server.lua
• spawn.lua
• exec.lua
• scp_recv.lua
• scp_send.lua
• client.lua
• server.lua
• cond.lua
• mutex.lua
• wait_group.lua
• termios.lua
• timer.lua
• signatures.lua
• subscribe.lua
• ubus.lua
• client.lua
• server.lua

Module eco.rtnl

RTNETLINK helpers.

This module provides small helpers to build and parse common rtnetlink message headers used with eco.nl.

Typical workflow:

1. open a NETLINK_ROUTE socket via eco.nl.open
2. build a netlink request using eco.nl.nlmsg
3. append an rtnetlink header (e.g. rtnl.rtgenmsg, rtnl.ifinfomsg, rtnl.rtmsg)
4. send and receive; parse replies using rtnl.parse_ifinfomsg, etc.

Many constants from Linux headers are also exported (RTM*, IFF*, IFLA*, IFA*, RTA*, RTNLGRP*, RTMGRP*, RTSCOPE*, RTN*, RTPROT_*).

Functions

rtgenmsg (t)	Build a struct rtgenmsg.
ifinfomsg (t)	Build a struct ifinfomsg.
ifaddrmsg (t)	Build a struct ifaddrmsg.
rtmsg (t)	Build a struct rtmsg.
parse_ifinfomsg (msg)	Parse struct ifinfomsg from a netlink message.
parse_ifaddrmsg (msg)	Parse struct ifaddrmsg from a netlink message.
parse_rtmsg (msg)	Parse struct rtmsg from a netlink message.

Functions

rtgenmsg (t)

Build a struct rtgenmsg.

Returns a binary string containing the packed C structure.

Parameters:

• t table

  Table with field:

  • family (int): address family (e.g. eco.socket.AF_PACKET).

Returns:

string Packed struct rtgenmsg.

ifinfomsg (t)

Build a struct ifinfomsg.

Missing fields default to 0.

Parameters:

• t table

  Table fields:

  • family (int)
  • type (int)
  • index (int)
  • flags (int)
  • change (int)

Returns:

string Packed struct ifinfomsg.

ifaddrmsg (t)

Build a struct ifaddrmsg.

Missing fields default to 0.

Parameters:

• t table

  Table fields:

  • family (int)
  • prefixlen (int)
  • flags (int)
  • scope (int)
  • index (int)

Returns:

string Packed struct ifaddrmsg.

rtmsg (t)

Build a struct rtmsg.

Missing fields default to 0.

Parameters:

• t table

  Table fields:

  • family (int)
  • dst_len (int)
  • src_len (int)
  • tos (int)
  • table (int)
  • protocol (int)
  • scope (int)
  • type (int)
  • flags (int)

Returns:

string Packed struct rtmsg.

parse_ifinfomsg (msg)

Parse struct ifinfomsg from a netlink message.

The input message must currently point to an RTM_NEWLINK or RTM_DELLINK message (see next).

Parameters:

• msg nlmsg_ker A kernel message parser from eco.nl.

Returns:

table Table fields: family, type, index, flags, change.

Or

1. nil On failure.
2. string Error message.

parse_ifaddrmsg (msg)

Parse struct ifaddrmsg from a netlink message.

The input message must currently point to an RTM_NEWADDR message.

Parameters:

• msg nlmsg_ker A kernel message parser from eco.nl.

Returns:

table Table fields: family, prefixlen, flags, scope, index.

Or

1. nil On failure.
2. string Error message.

parse_rtmsg (msg)

Parse struct rtmsg from a netlink message.

The input message must currently point to an RTM_NEWROUTE or RTM_DELROUTE message.

Parameters:

• msg nlmsg_ker A kernel message parser from eco.nl.

Returns:

table Table fields: family, dst_len, src_len, tos, table, protocol, scope, type, flags.

Or

1. nil On failure.
2. string Error message.