Scraping data from a BT home hub 5
If you have BT broadband and want to graph the synced speed and actual use of your broadband connection, and you use the BT provided router (Home Hub), then you can’t use SNMP to get these counters. But you can get the data over HTTP without too much trouble. Here’s some ugly one-liners for doing that.
Current byte counters on the Internet interface (down/up)
curl -s 192.168.42.1/nonAuth/wan_conn.xml
| sed -r '/wan_conn_volume_list/{N;s/.*[.//;s/[^0-9]],$//;s/%3B/ /g;s/^[0-9]+ ([0-9]+) ([0-9]+)$/1 2/g;p};d'
Current synced up speeds in bps (down / up)
curl -s 192.168.42.1/nonAuth/wan_conn.xml
| sed -r '/status_rate/{N;s/.*[.//;s/[^0-9]],$//;s/%3B/ /g;s/^([0-9]+) ([0-9]+) [0-9]+ [0-9]+/2 1/g;p};d'
Misc note
First I tried this. And it appeared to work. But only if someone had logged in to the web UI recently.
curl -s 192.168.42.1/cgi/cgi_ad_B_Internet.js | sed -r '/wan_conn_volume_list/{N;s/.*[.//;s/[^0-9]],$//;s/%3B/ /g;s/.* ([0-9]+) ([0-9]+)$/1 2/g;p};d'
But then I try it on a different machine and… Oh… oh no. Oh say it ain’t so. Don’t tell me the BT home hub security is based on IP address? Oh… oh it is.
In conclusion
Yet another reason these routers are completely retarded. Other examples:
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