Eastern Europe W.C. Repair

So I'm in Hungary try to remodel a 200 year old apartment. I have barely any tools and the toilet is leaking..............
Here is the toilet. Its leaking at the base (that is a mat in the picture and not the floor. The floor is tile.)
The toilet is leaking after flushing. and it rocks a ton.

By flushing I mean turning the valve handle mounted above the bowl. Its a custom variable flushing toilet. Suck it Toto.

In summary-
Need to anchor the toilet and stop the leaking.
Should I be able to use a wax ring and bolt it down? Why is it not bolted now? How can I take this apart? Anyone ever seen this? Why did I follow my girlfriend here?

Thank You!

The picture isn't real sharp, are there no hold down bolts?
Normally we would have brass bolts into a ring attached to the concrete or tile, and then a washer and nut the secure it.
If the bowl was rocking, it would need to be shimmed. A rocking toilet needs to be secured, or the wax seal will leak, assuming they seal with wax there, and not some sort of rubber seal.

I know that toilet well! Every "rabbit hutch" soviet built [designed-inspired] apartment [Panelok's] from the Bering strait to East germany had that crapper with the shelf [NO water in the bowl]

Its a huge joke over there, these toilets, they assume the designers wanted you to have a chance to inspect, dissect and possibly save your output for further investigation. You need a big Cuban cigar to keep from killing the rest of the little apartments residents, although each toilet cabinet [about a meter square] was provided a vent to a chamber that ran from the basement all the way to the roof. When you got a nice downdraft, you might pass out on the crapper.

Wall hung tanks on many gave a fantastic flush and washed your privates too. They would embarass a toto and flush 2000 grams of rocks covered with pepper.

Most had the old style wooden handle on a rope right at the side and you would flush a bit with each squeeze to keep down the odors. Looked to me that they [or some] were mudded in and sealed to the pipe with some sort of tar/ oakum packing. Never had the pleasure to pull one. And like the trabants, most are in the landfill now. Probably a 6 to 10 gallon flush after a big night at the sausage and beer hall. BUT, really these could be fantastically efficent toilets, as you controlled the flush and a careful guy could clean the bowl with a few ounces of water. Many basically had a hose bib for the flush mechanism - nothing to break at all. So we have something to learn from this crapper too.

Most packaging for a kids toy is heavier than those old communist toilet seats.

Rip it out and go to Baumax [the Lowes of europe] and get a nice German or Slovak made new one. And why did you follow your girlfriend there? .... For the same reason as myself I suppose, but thats a very different forum altogether. Terry would have a delete festival with that explanation.

Bring her here, and buy a nice cottage in the country for 5,000$ as I did and go there for vacations. But do not forget to flush one of those - source of a lot of domestic violence.