add usage examples

README.md

@@ -5,12 +5,87 @@ Based original on whoisd from the dn42 monotone registry written by welterde.
 
 ## Installation
 
-1. Install a go compiler
+1. Install a go compiler (like apt-get install go)
 2. Setup Go Workspace:
 
-  $ mkdir ~/go
-  $ export GOPATH=~/go
+    $ mkdir ~/go && export GOPATH=~/go
 
 3. Download and install the daemon
 
-  $ go get github.com/Mic92/whois42d
+    $ go get github.com/Mic92/whois42d
+
+## Usage
+
+    root> ~/go/bin/whois42d -registry /path/to/registry
+
+
+## Run without root
+
+By default root privileges are required to run whois42d to be able to bind port 43.
+However you can use one of the following options to run whois42d without beeing root.
+
+1. Use setcap on file:
+
+    $ setcap 'cap_net_bind_service=+ep' ./whois42d
+
+2. Use a supervisor supporting socket activation, for example systemd:
+
+    $ cp whois42d.service whois42d.socket /etc/systemd/system
+    $ install -D -m755 ~/go/bin/whois42d /usr/local/bin/
+
+Edit whois42d.service to point to your monotone registry path, then enable it with
+
+    $ systemctl enable whois42d.socket
+    $ systemctl start whois42d.socket
+
+**NOTE**: Do not start whois42d.service directly (`systemctl start whois42d`),
+it run as user nobody, who cannot bind to port 43 itself.
+
+## Supported Queries
+
+    # mntner
+    $ whois -h <server> HAX404-MNT
+
+    # person
+    $ whois -h <server> HAX404-DN42
+
+    # aut-num
+    $ whois -h <server> AS4242420429
+
+    # dns
+    $ whois -h <server> hax404.dn42
+
+    # inetnum
+    $ whois -h <server> 172.23.136.0/23
+    # or
+    $ whois -h <server> 172.23.136.1
+
+    # inet6num
+    $ whois -h <server> fd58:eb75:347d::/48
+
+    # route
+    $ whois -h <server> 172.23.136.0/23
+
+    # route6
+    $ whois -h <server> fdec:1:1:dead::/64
+
+    # schema
+    $ whois -h <server> PERSON-SCHEMA
+
+    # organisation
+    $ whois -h <server> ORG-C3D2
+
+    # tinc-keyset
+    $ whois -h <server> SET-1-DN42-TINC
+
+    # tinc-key
+    $ whois -h <server> AS4242422703
+
+    # as-set
+    $ whois -h <server> 4242420000_4242423999
+
+    # as-block
+    $ whois -h <server> AS-FREIFUNK
+
+    # route-set
+    $ whois -h <server> RS-DN42-NATIVE