dhcp: add options for static leases, custom domain names and olsrd services

[Noki]

This allows to add static dhcp leases, custom domain names and olsrd services by adding a dhcp.yml / olsrd.yml file to the location directory. This would resolve #265.

The syntax of the dhcp.yml file is as follows:

---
dhcp_static_leases:
- name: hostname1
  mac: AA:BB:80:7C:E8:9E
  ip: 10.10.10.1
- name: unifi
  mac: AA:BB:80:7C:E8:99
  ip: 10.10.10.2
  dns: 1
- name: webcam1
  mac: AA:BB:80:7C:E8:01
  ip: 10.10.10.3
  dns: 1
  olsrd_nameservice: 1
- name: webcam2
  mac: AA:BB:80:7C:E8:02
  ip: 10.10.10.4
  dns: 1
  olsrd_nameservice: 1  
dhcp_custom_domain_names:
- name: unifi
  ip: 10.10.10.2

The syntax of the olsrd.yml file is as follows:

---
olsrd_services:
- name: Webcam 1
  protocol: tcp
  url: http://webcam1.olsr:80/
- name: Webcam 2
  protocol: tcp
  url: http://webcam2.olsr:80/  

This still misses documentation in the commit. Feedback is welcome.

Todo:

• check that olsrd_services fields do not contain a pipe "|"
• add proper documentation
• resolve TODO in roles/cfg_openwrt/templates/corerouter/config/dhcp.j2
• resolve TODO in roles/cfg_openwrt/templates/corerouter/config/olsrd.j2
• also apply changes to roles/cfg_openwrt/templates/gateway/config/*

[Akira25]

Looks good to me at a short wentthrough.

One notice on the OLRS-services:
Hence the service name field has a flexible string, there are a lot of letters, which are not allowed to be there. Otherwise they will stop the olsrd from start up.

For an exact list of them, refer to the service-registrar sanitize code please.

As bbb-configs is an expert toop, it should be enough, to mention that circumstance in the documentation.

[Akira25]

The aforementioned code is here:

https://github.com/freifunk-berlin/falter-packages/blob/master/luci/luci-app-falter-service-registrar/htdocs/luci-static/resources/view/falter-service-registrar/form.js

LL 9-11

[Noki]

I added validation for the olsrd services fields to avoid having an olsrd service that is not starting.

[Noki]

I added documentation. I would love to get some more feedback on this / active testing.

[pmelange]

I know it's not in your code, but

bbb-configs/roles/cfg_openwrt/templates/corerouter/config/dhcp.j2

Line 67 in b9cc657

config host

is causing problems. It should be config domain

Also, for my setup, I would prefer to limit the range of IPs on the dhcp network. For example, I have it set up so that the start is 50 and the limit is 200. I use the first 50 addresses for static leases and statically configured hosts (for prototyping and VM's).

[pmelange]

These changes should also be done in templates/gateway/config/ too.

[pmelange]

These changes should also be done in templates/gateway/config/ too.

I still don't see any changes in templates/gateway/config/

[Noki]

Yes, not done yet... added all open tasks to the todo list of this PR (first post).

[pktpls]

Was ist hier der aktuelle Stand

[Noki]

Der aktuelle Stand ist, dass es eigentlich erst sinnvoll ist dies fertig zu machen, wenn wir alle Geräte als Hosts beschreiben, also auch Antennen und Switches und die SNMP Profiles, DFS-Reset und eben auch services und leases dann auf die Hostbeschreibung wechseln. - So war zumindest mal der Plan den ich mit @FFHener besprochen hatte.

[FFHener]

Ich hab die Arbeit an dieser Migration dahin aktuell pausiert um die Sommermonate mich auf die Wartung zu fokussieren, würde aber nach meiner aktuellen Planung in das Thema wieder im Herbst einsteigen