TODO

0.4
* HTTP plugin
* Load balancer plugin
* file access and caching API
* remove TLS cache (done)
* optimize string_split and string_replace by building the Boyer Moore lookup table only once (done)
* Patricia tree to implement ACLs (done)
* improve the string API to properly handle a mix of encodings


Various notes:
res = server_reply_init(flag);

server_reply_setheader(res, "some formatting %s", plop);
server_reply_setfile(res, file_open(root, rlen, path, plen), offset, len);
server_reply_setfooter(res, "formatting again %s", lapin);

server_send_reply(token, sockid, res);

API:
view = fs_openview("/var/www/htdocs", sizeof("/var/www/htdocs"));
fs_sethandler(view, "/rel/path", sizeof("/rel/path"), handler);
fs_mapdata(view, "/rel/path", sizeof("/rel/path"), somedata);
old = fs_remapdata(view, "/rel/path", sizeof("/rel/path"), somedata);
file = fs_openfile(view, "/rel/path", sizeof("/rel/path"), rights);
fs_closefile(file);
fs_closeview(view); (orphan all remaining files in use)

SECURITY:
Upon startup or SIGHUP, security.xml is loaded. It populates
a hashtable with pairs of path and rulesets.

When fs_openview() is called, if there is no rule for this path
the success depends on the default policy.

fs_mapdata use the view rulesets to allow or deny the virtual mapping
the virtual file will inherit of the view rulesets

fs_openfile use the view rulesets to allow or deny access to the file.
rights is a structure holding the credentials and the rights asked