If my website is a warez website but the main page (index) has no warez. - only the posts has warez linking is it legal to put ads in the main page (there is no copyright infringement) ? can i get banned because of this? sorry for my english
If you are talking about adsense, then you will sooner or later get banned, they are not isolated to the home page, and they will look at your entire site, and if a human does not, then spiders certainly will, and I suspect that any ad management site would ban you if they catch you doing this; not only that, google could go even further by penalizing your site, then you are no where to be found.
Big G doesn't like copyright infringements of any kind, they will treat your site as a whole, i.e. if one page as warez it's a warez site: period. It may take someone to report you before they act