mirror of
git://git.psyced.org/git/psyced
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436 lines
14 KiB
OpenEdge ABL
436 lines
14 KiB
OpenEdge ABL
// vim:foldmethod=marker:syntax=lpc:noexpandtab
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// $Id: library.i,v 1.172 2008/07/26 10:54:31 lynx Exp $
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#include <psyc.h>
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// #include "../base64.i"
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#define QUIT destruct(ME); return 1;
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#if SYSTEM_CHARSET != "UTF-8"
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# echo "FIXME: PSYC will be not be rendered in UTF-8."
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#endif
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volatile mapping obj2unl = ([]);
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volatile mapping unl2obj = ([]);
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// global location to identification resolver
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volatile mapping unl2uni = ([]);
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varargs void register_location(mixed unl, vamixed uni, vaint unsafe) {
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PROTECT("REGISTER_LOCATION")
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if (uni) {
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if (unsafe && unl2uni[unl]) {
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P1(("register_location denied: %O says it is %O, but that is already registered for %O\n", uni, unl, unl2uni[unl]))
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return;
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}
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unl2uni[unl] = uni;
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}
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else m_delete(unl2uni, unl);
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}
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#ifndef _flag_disable_module_authentication
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/** finds the _identification for a network source. if it cannot find
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** the information in the cache, and a second argument is given with
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** the _identification claimed by the source, that _identification
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** will be asked for confirmation via PSYC. the result will obviously
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** be available only at a later time. there is no callback function
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** to this purpose. this function will ONLY return an identification
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** when it is effectively different from the provided source.
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** when a source is its own identification, this returns to avoid
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** any extra processing. maybe one day we will return 1 if that's
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** useful in any way, but you can check source == givenUNI yourself.
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** the reason why the variable is called givenUNI and not identification
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** is because a client may very well claim to be someone and actually not
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** be that person. we are not sure about identification before the
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** _request_authentication has returned.
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*/
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// this code is used intensely in FORK mode, whereas in !FORK,
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// since entity.c, the givenUNI is never passed, thus inactive.
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// unl2uni is only being used for local users' clients, not remotes
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//
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varargs mixed lookup_identification(mixed source, vamixed givenUNI) {
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PROTECT("LOOKUP_IDENTIFICATION")
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P2(("lookup_identification %O (%O) in %O\n", source, givenUNI, unl2uni))
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if (member(unl2uni, source)) return unl2uni[source];
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// ask a remote uni, but don't wait to complete
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if (givenUNI && source) {
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unl2uni[source] = 0; // ensures that we don't get here twice
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// now and in future always return 0 to avoid extra
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// processing of
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if (givenUNI == source) return 0;
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P1(("%O sending _request_authentication to %O for %O\n",
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ME, givenUNI, source))
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# ifndef __PIKE__ // TPD
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sendmsg(givenUNI, "_request_authentication", 0,
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([ "_location" : source ]));
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# endif
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}
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// we could look again ;)
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//if (unl2uni[source]) return unl2uni[source];
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return 0;
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}
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#endif
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varargs string psyc_name(mixed source, vastring localpart) {
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P3((">> psyc_name(%O, %O)\n", source, localpart))
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string s;
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if (s = obj2unl[source]) return s;
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#if DEBUG > 0
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if (stringp(source))
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raise_error("psyc_name called for string "+ source+ "\n");
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#else
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if (stringp(source)) return source;
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#endif
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#ifdef PARANOID
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unless (objectp(source)) return 0;
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#endif
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unless (s = localpart) {
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if (s = source->psycName()) {
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if (abbrev("mailto:", s)) {
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unl2obj[s] = source;
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return obj2unl[source] = s;
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}
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} else s = file_name(source);
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}
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//
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// since this is an outgoing UNL and we do not do
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// virtual psyc hosting we should be
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// allowed to leave out the myUNL here.
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// since we need to recognize ourselves in _context messages
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// even if our _source has been repatched, we need to know
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// all our "canonical" names. so this isn't even enough.
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// we probably need to our canonical hostname: myUNLCN.
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//
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#ifndef __HOST_IP_NUMBER__
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// if (myUNLIP)
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#endif
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// unl2obj[myUNLIP +"/"+ s] = source;
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// why store it with an ip? nobody uses that anyway!?
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// is it being used anywhere in the parser? naaah.
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s = myUNL + s;
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P3((">>> psyc_name for %O is %O\n", source, s))
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unl2obj[s] = source;
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return obj2unl[source] = s;
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}
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object psyc_object(string uniform) {
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// unl2obj can become too big and cause a sprintf error here
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// so you don't want this debug output on a production server!
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//PT(("psyc_object(%O) in %O\n", uniform, unl2obj))
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return unl2obj[uniform];
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}
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object find_psyc_object(array(mixed) u) {
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P3((">> find_psyc_object(%O)\n", u))
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string t, r, svc, user;
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object o;
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user = u[UNick];
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r = u[UResource];
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if (r && strlen(r)) {
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#if __EFUN_DEFINED__(trim)
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# include <sys/strings.h>
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r = trim(r, TRIM_RIGHT, '/');
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#else
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while (char_from_end(r, 1) == '/') r = slice_from_end(r, 0, 2);
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#endif
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if (strlen(r)) switch(r[0]) {
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case '^':
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break;
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case '~':
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#ifdef _flag_enable_module_microblogging
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if (u[UChannel]) {
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t = lower_case(r +"#"+ u[UChannel]);
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r = PLACE_PATH + t;
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if (o = find_object(r)) break;
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unless (t = legal_name(t, 1)) break;
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// untreated catch? interesting..
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catch(o = r -> load(t));
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}
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#endif
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break;
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case '$':
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// target wird auf serv/args gesetzt
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// weiss noch nicht ob das gut ist
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t = r[1..];
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unless (sscanf(t, "%s/%s", svc, r))
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svc = t;
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//P3(("find_service: %O for %O(%O)\n", o, svc, r))
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if (o = find_service(lower_case(svc)))
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break;
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// unless (user) {
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// croak("_failure_unavailable_service",
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// "No service '[_service]' available here.", ([ "_service" : svc ]) );
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// return restart();
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// }
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return 0; // TODO!
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#ifndef __PIKE__
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case '@':
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// t[0..0] = PLACE_PATH;
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r = PLACE_PATH + lower_case(r[1..]);
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if (o = find_object(r)) break;
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// should check for legal name instead
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// of catch. TODO
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catch(o = r -> load());
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if (objectp(o)) break;
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// fall thru
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#endif
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default:
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o = find_object(r);
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D2( if(!o)
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D("OBJECT NOT FOUND: "+ r +"\n"); )
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}
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}
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else unless (user) {
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//return 0; // return SERVER_UNIFORM !?
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return find_target_handler("/");
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}
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if (!objectp(o) && user) {
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// psyc/parse used to do this here
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o = summon_person(user); //, PSYC_PATH "user");
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P2(("%O summoning %O: %O\n", ME, user, o))
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}
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P3((">>> found psyc object: %O\n", o))
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return o;
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}
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#ifndef __PIKE__
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// library transmits udp packets itself
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#include "render.i"
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#endif
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// target is lowercased already
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int psyc_sendmsg(mixed target, string mc, mixed data, mapping vars,
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int showingLog, mixed source, array(mixed) u) {
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string sname, host, buf, room;
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int port, usesrv = 1;
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object ob;
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mixed t;
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unless (u[UHost]) {
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#ifndef __PIKE__ // TPD
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sendmsg(source, "_failure_unsupported_notation_location",
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"PSYC server-independent uniform network "
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"identificators not implemented yet.", 0, 0);
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#endif
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return 0;
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}
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#if DEBUG > 0
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unless (stringp(mc)) {
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P0(("psyc_sendmsg got mc == %O from %O.\n"
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"probably a mistake when converting a walk_mapping.\n",
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mc, previous_object()))
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return 0;
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}
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#endif
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sname = objectp(source) ? psyc_name(source) : sname;
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// host = lower_case(u[UHostPort]);
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// unless (u[URoot]) u[URoot] = "psyc://"+host;
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// TODO: vars should be enforced system-wide
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unless (mappingp(vars)) vars = ([ ]);
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// seid ihr euch wirklich sicher, dass ihr diese zeile entfernen wollt?
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vars["_target"] = target;
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// <lynX> this could help protect against sources who destruct while
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// the message is in the queue. is it being used or is it okay to do
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// this operation at enqueing time? in fact the templates who use it
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// get it from psyctext() which resolves _source as source.. so this
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// here should not be necessary.. then again we just calculated it
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// so we don't want it to be calculated again later.. so we should
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// rather adapt the other spots where it's used rather than here..
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// after all it's mostly speed improvements.. no big thing.. TODO
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vars["_source"] = sname;
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unless (port = u[UPort]) port = u[UTransport] == "s" ?
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PSYCS_SERVICE : PSYC_SERVICE;
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else {
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usesrv = 0;
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if (port < 0) {
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P2(("Minusport in %O or %O, _failure to %O || %O\n",
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target, u[UHost], vars["_context"], source))
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#ifndef __PIKE__ // TPD
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sendmsg(vars["_context"] || source,
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"_failure_network_connect_invalid_port",
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"No connectable port known for [_source_relay].",
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([ "_source_relay" : target || u[UHost] ]), ME);
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// ME shouldn't be necessary! TODO
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#endif
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return 0;
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}
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}
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host = lower_case(u[UHost]);
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if (query_udp_port() == port && is_localhost(host)) {
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// this happens when a psyc client sends to a local
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// target that hasn't been incarnated yet...
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ob = find_psyc_object(u);
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// cache the resulting object for the url
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if (ob) {
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P2(("psyc_sendmsg registering %O for %O found by parsing uniform\n",
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target, ob))
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register_target(target, ob);
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}
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#ifndef __PIKE__ // TPD
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return sendmsg(ob, mc, data, vars, source);
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#endif
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// or deliver directly?
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}
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// since the local URoot is in targets and pointing to net/root
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// we have to get here *after* making sure we are not addressing
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// a local entity.
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P3(("looking for %O(%O) in %O..\n", target, u[UHostPort], targets))
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// if (member(targets, t2 = u[URoot])) {
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// t = targets[t2];
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// if (t) {
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if (t = targets[u[URoot]]) {
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P2(("%O to be delivered on %O's circuit\n",
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target, query_ip_name(t) || t ))
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register_target(target, t);
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// was delivermsg(
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return t->msg(sname, mc, data, vars, 0, target);
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// no more cleansing of targets mapping.. see also net/library.i
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// } else {
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// P1(("PSYC/TCP target %O gone!\n", t2))
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// m_delete( targets, t2 );
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// }
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}
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#ifndef __PIKE__
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// okay so we have no existing connection..
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// current rule of thumb to decide whether to open up a tcp
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// also all localhost traffic should be handled by udp TODO
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#ifdef _flag_enable_routing_UDP
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if (u[UTransport] == "c" ||
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# ifdef _flag_enable_routing_TLS
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u[UTransport] == "s" ||
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# endif
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(!u[UTransport] && !abbrev("_notice", mc)))
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#else
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if (!u[UTransport] || u[UTransport] == "c"
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# ifdef _flag_enable_routing_TLS
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|| u[UTransport] == "s"
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# endif
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)
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#endif
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{
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dns_resolve(host, (:
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object o;
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string hopo = $2;
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string psychopo;
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string psycippo = "psyc://"+ $1 +"/";
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// if ($3 && $3 != PSYC_SERVICE) {
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if ($9) {
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hopo += ":"+$9;
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psycippo += ":"+$9;
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}
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// hope it is correct to have a trailing slash here
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psychopo = "psyc://"+ hopo +"/";
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unless (o = find_target_handler(psycippo)) {
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// we use psyc:host:port as an object name
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// we can change that if it is confusing
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#ifdef QUEUE_WITH_SCHEME
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// this makes it look for psyc:host:port as its queue
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o = ("psyc:"+hopo) -> circuit($2, $3, u[UTransport],
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usesrv && "psyc", 0, systemQ, psychopo);
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#else
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// this makes it look for host:port as its queue
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o = ("psyc:"+hopo) -> circuit($2, $3, u[UTransport],
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usesrv && "psyc", hopo, systemQ, psychopo);
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#endif //__PIKE__
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// SRV tag "psyc" is actively being checked, but
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// don't rely on it.. just use it as a fallback if
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// nothing else is possible, but some clients may
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// no longer be able to connect to you...
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}
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register_target($4, o);
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register_target(psychopo, o);
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register_target(psycippo, o);
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P2(("delivering %O(%O) over %O\n", hopo, $1, o))
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P3(("targets = %O\n", targets))
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// psyc/circuit.c will register psyc://IP:PORT at logon()
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// the last thing missing is a way to register all CNAMEs
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return o->msg($5, $6, $7, $8, 0, $4);
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// ip=1 2 3 4 5 6 7 8 9
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:),
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host, port, target, sname, mc, data, vars, u[UPort]
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);
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return 1;
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}
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else
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#ifdef _flag_enable_routing_UDP
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if (u[UTransport] && u[UTransport] != "d")
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#endif
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{
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P1(("Invalid transport %O in %O, _failure to %O || %O\n",
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u[UTransport], target, vars["_context"], source))
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sendmsg(vars["_context"] || source,
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"_failure_network_connect_invalid_transport",
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"Unknown transport type '[_transport]' for [_source_relay].",
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([ "_source_relay" : target || u[UHost],
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"_transport": u[UTransport] ]), ME);
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// ME shouldn't be necessary! TODO
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return 0;
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}
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#ifdef _flag_enable_routing_UDP
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// fall thru to UDP
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# if DEBUG > 1
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if (port) {
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D(S("UDP[%s:%d] <= %O: %s\n", host, port, source, mc));
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} else {
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D(S("UDP[%s] <= %O: %s\n", host, source, mc));
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}
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# endif
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#ifndef NEW_RENDER
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// this produced wrong _length. please discontinue.
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if (stringp(data) && strlen(data))
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// why do we take guesses at data here? uncool!
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data="\n"+data+ (data[strlen(data)-1] == '\n' ?
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S_GLYPH_PACKET_DELIMITER "\n" :
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"\n" S_GLYPH_PACKET_DELIMITER "\n");
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else data="\n" S_GLYPH_PACKET_DELIMITER "\n"; // TODO? look up textdb.
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if (room = vars["_context"]) {
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// this may have to change into a full psyc: URL
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if (objectp(room)) room = psyc_name(room);
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buf = S_GLYPH_PACKET_DELIMITER "\n"
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":_source_relay\t"+ sname +"\n"
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+ ":_context\t"+ room +"\n";
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} else
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buf = S_GLYPH_PACKET_DELIMITER "\n"
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":_source\t"+ sname +"\n"
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":_target\t"+ target +"\n";
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t = render_psyc(source, mc, data, vars, showingLog, target);
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unless (t) return 0;
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buf += t;
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#else
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buf = render_psyc(source, mc, data, vars, showingLog, target);
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unless (buf) return 0;
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#endif /* NEW_RENDER */
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// host seems to already be in lower_case
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if (is_localhost(host)) return send_udp(host, port, buf);
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PT(("dns_resolve + send_udp %O:%O packet:\n%s", host,port,buf))
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dns_resolve(host, (: if (stringp($1))
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send_udp($1, $2, $3);
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else
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// if your driver complains about vars being
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// undefined at this point, you are probably
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// running an ldmud 3.2 which is not compatible
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// with psyced. pick a newer major version pls
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sendmsg(vars["_context"] || source,
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"_failure_network_send_resolve",
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"[_source_host] for [_source_relay] does not resolve.",
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([ "_source_host" : host,
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"_source_relay" : target||host ]), ME);
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return; :), port, buf);
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return 1;
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#endif /* _flag_enable_routing_UDP */
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#endif // PIKE
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}
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/* this breaks /connect ...
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object createUser(string nick) {
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PT(("creating " PSYC_PATH "user for "+ nick +"\n"))
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return named_clone(PSYC_PATH "user", nick);
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}
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*/
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