mirror of
https://github.com/ChronosX88/psyced.git
synced 2024-11-14 06:21:02 +00:00
288 lines
6.9 KiB
OpenEdge ABL
288 lines
6.9 KiB
OpenEdge ABL
// vim:foldmethod=marker:syntax=lpc:noexpandtab
|
|
// $Id: routerparse.i,v 1.15 2008/02/06 12:16:16 lynx Exp $
|
|
//
|
|
// THIS FILE IS FORK ONLY, thus currently not in use.
|
|
//
|
|
// TODO: both parsers need to croak on incoming _INTERNAL vars!!
|
|
|
|
#ifdef FORK // {{{
|
|
// MMP PARSER - parses the routing header of PSYC, also known as MMP.
|
|
//
|
|
// THIS IS THE INNOVATIVE RID'N'SAGE PARSER REWRITE
|
|
// they wanted to have it completely seperate from the original parse.i
|
|
// so *keep* it seperate in its own file, routerparse.i!
|
|
//
|
|
// unfortunately it handles context counters in a non-universal way.. TODO
|
|
// also it misses support for _trust
|
|
|
|
// this flag should enable forward-checks of dns resolutions..
|
|
// currently we don't have that, so this flag actually disables
|
|
// use of unprooven resolved hostnames and reduces everything to
|
|
// ip numbers.
|
|
//#define HOST_CHECKS
|
|
|
|
#ifndef PSYC_LIST_SIZE_LIMIT
|
|
# define PSYC_LIST_SIZE_LIMIT 404
|
|
#endif
|
|
|
|
// just the plain ip number of the remote host
|
|
// ^^ glatte lüge!
|
|
volatile string peerhost;
|
|
#if 0 //defined(PSYC_TCP) && __EFUN_DEFINED__(strrstr)
|
|
volatile string peerdomain;
|
|
#endif
|
|
// remote port number
|
|
volatile int peerport;
|
|
// unresolved-ip or ip:port
|
|
volatile string peeraddr;
|
|
// holds last ip we were connected to
|
|
volatile string peerip;
|
|
// how much can we trust the content of this packet?
|
|
volatile int ctrust;
|
|
|
|
volatile closure _deliver;
|
|
volatile object _psyced;
|
|
#define PSYCED (_psyced ? _deliver : (_psyced = DAEMON_PATH "psyc" -> load(), _deliver = symbol_function("deliver", _psyced)))
|
|
|
|
|
|
// current variables (":"), permanent variables ("=", "+", "-")
|
|
//
|
|
volatile mapping cvars = 0, pvars = ([ "_INTERNAL_origin" : ME ]), nvars = 0;
|
|
|
|
//
|
|
// a distinction between mmp and psyc-vars should be made
|
|
|
|
// current method and incoming buffer
|
|
volatile string buffer;
|
|
|
|
// cache of patched remote uniforms
|
|
volatile mapping patches = ([]);
|
|
|
|
// parsing helpers..
|
|
// MMP
|
|
volatile string lastvar, lastmod, checkpack, origin_unl;
|
|
volatile mixed lastvalue;
|
|
// list parsing helpers..
|
|
volatile array(mixed) list;
|
|
volatile mapping hash;
|
|
volatile int l = 0;
|
|
//volatile int pongtime; // TODO: FORK is missing the PONG
|
|
|
|
# ifndef PSYC_TCP
|
|
// resolved UNL of remote server (psyc://hostname or psyc://hostname:port)
|
|
volatile string netloc;
|
|
# define QUIT return 0;
|
|
# endif
|
|
|
|
// prototype definition for #'getdata
|
|
getdata(string a);
|
|
restart();
|
|
|
|
#ifdef __LDMUD__
|
|
# define SCANFIT (sscanf(a, "%1.1s%s%t%s", mod, vname, vvalue) || sscanf(a, "%1.1s%s", mod, vname))
|
|
#else
|
|
# define SCANFIT (sscanf(a, "%1s%s%*[ \t]%s", mod, vname, vvalue) || sscanf(a, "%1s%s", mod, vname))
|
|
#endif
|
|
|
|
#define SPLITVAL(val) \
|
|
unless (sscanf(val, "%s %s", val, vdata)) vdata = 0
|
|
// sollte es wirklich ein space sein? hmmm.. %t ist sowieso zu grob..
|
|
|
|
# ifndef PSYC_TCP
|
|
# define UDPRETURN(x) return x;
|
|
# define ERROR(m) UDPRETURN(0)
|
|
# else
|
|
# define UDPRETURN(x)
|
|
# define ERROR(m) { croak("_error_syntax_broken", "Failed in parsing " \
|
|
"[_modifier], closing connection.", \
|
|
([ "_modifier" : intp(m) \
|
|
? to_string(({m})) \
|
|
: to_string(m) ])); \
|
|
monitor_report("_error_syntax_broken", \
|
|
sprintf("MMP parsing failed. closing connection: %O", ME)); \
|
|
destruct(ME); \
|
|
}
|
|
# endif
|
|
|
|
# ifdef PSYC_TCP
|
|
void
|
|
# else
|
|
mixed
|
|
# endif
|
|
mmp_parse(string a) {
|
|
string mod, vname, vvalue;
|
|
|
|
P3(("MMP>> %O\n", a))
|
|
|
|
if (sizeof(a)) switch(a[0]) {
|
|
case '=':
|
|
case '+':
|
|
case '-':
|
|
# ifndef PSYC_TCP
|
|
// hier könnten wir jedenfalls nen error ausgeben
|
|
// udp und state ist keine gute kombination
|
|
# endif
|
|
case ':':
|
|
unless (2 <= sscanf(a, "%1.1s%s%t%s", mod, vname, vvalue)
|
|
|| 2 == sscanf(a, "%1.1s%s", mod, vname)) {
|
|
ERROR(a[0]);
|
|
}
|
|
if (vvalue == "") vvalue = 0;
|
|
P3(("G: %O %O %O\n", mod, vname, vvalue))
|
|
unless (vname) {
|
|
unless (lastvar && a[0] != '-' && lastmod
|
|
&& lastmod[0] == a[0]) ERROR(a[0]);
|
|
if (pointerp(lastvalue)) {
|
|
lastvalue += ({ vvalue });
|
|
} else {
|
|
lastvalue = ({ lastvalue, vvalue });
|
|
}
|
|
return;
|
|
}
|
|
|
|
break;
|
|
case '\t':
|
|
unless (lastvar) {
|
|
ERROR(a[0]);
|
|
}
|
|
if (pointerp(lastvalue))
|
|
lastvalue[<1] += "\n"+a[1..];
|
|
lastvalue += "\n"+a[1..];
|
|
return;
|
|
default:
|
|
ERROR(a[0]);
|
|
}
|
|
|
|
if (lastmod) switch(lastmod[0]) {
|
|
# ifdef PSYC_TCP
|
|
case '=':
|
|
unless (lastvalue) {
|
|
m_delete(pvars, lastvar);
|
|
break;
|
|
}
|
|
if (lastvar == "_understand_modules") {
|
|
gotiate(lastvalue);
|
|
} else if (lastvar == "_use_modules") {
|
|
negotiate(lastvalue);
|
|
}
|
|
pvars[lastvar] = lastvalue;
|
|
# endif
|
|
case ':':
|
|
if (lastvalue)
|
|
cvars[lastvar] = lastvalue;
|
|
else
|
|
m_add(nvars, lastvar);
|
|
break;
|
|
# ifdef PSYC_TCP
|
|
case '+':
|
|
_augment(pvars, lastvar, lastvalue);
|
|
if (lastvar == "_understand_modules") {
|
|
gotiate(lastvalue);
|
|
} else if (lastvar == "_use_modules") {
|
|
negotiate(lastvalue);
|
|
}
|
|
break;
|
|
case '-':
|
|
_diminish(pvars, lastvar, lastvalue);
|
|
break;
|
|
# endif
|
|
}
|
|
|
|
|
|
unless (sizeof(a)) {
|
|
# ifdef PSYC_TCP
|
|
next_input_to(#'getdata);
|
|
# endif
|
|
// TODO init cvars = copy(pvars)
|
|
cvars = (pvars + cvars) - nvars;
|
|
UDPRETURN(2)
|
|
} else if (a[0] == '.') {
|
|
# ifdef PSYC_TCP
|
|
next_input_to(#'mmp_parse);
|
|
# endif
|
|
restart();
|
|
UDPRETURN(1)
|
|
} else {
|
|
lastmod = mod;
|
|
lastvar = vname;
|
|
lastvalue = vvalue;
|
|
# ifdef PSYC_TCP
|
|
next_input_to(#'mmp_parse);
|
|
# endif
|
|
UDPRETURN(1)
|
|
}
|
|
# ifdef PSYC_TCP
|
|
if (timeoutPending) remove_call_out(#'quit);
|
|
# endif
|
|
}
|
|
|
|
getdata(string a) {
|
|
P4(("GETDATA: %O\n", a));
|
|
if (a != ".") {
|
|
if (buffer == "")
|
|
buffer = a;
|
|
else
|
|
buffer += "\n"+a;
|
|
# ifdef PSYC_TCP
|
|
next_input_to(#'getdata);
|
|
# endif
|
|
} else {
|
|
array(mixed) u;
|
|
string t = cvars["_context"] || cvars["_source"];
|
|
|
|
# ifdef PSYC_TCP
|
|
// let's do this before we deliver in case we run into
|
|
// a runtime error (but it's still better to fix it!)
|
|
next_input_to(#'mmp_parse);
|
|
# endif
|
|
if (!t || trustworthy > 5) {
|
|
funcall(PSYCED, 0, 0, ME, peeraddr, peerhost,
|
|
buffer, cvars);
|
|
} else unless (u = parse_uniform(t)) {
|
|
P1((">> parse_uniform %O %O\n", t, u))
|
|
croak("_error_invalid_uniform",
|
|
"Looks like a malformed URL to me.");
|
|
QUIT
|
|
} else dns_resolve(u[UHost], PSYCED, peerip, ME, peeraddr,
|
|
u[UHost], buffer, cvars);
|
|
restart();
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
restart() {
|
|
// delete temporary variables for next msg
|
|
cvars = ([ "_INTERNAL_trust" : trustworthy ]);
|
|
nvars = m_allocate(0, 1);
|
|
lastvalue = lastvar = lastmod = 0;
|
|
// delete other stuff too
|
|
buffer = "";
|
|
ctrust = trustworthy;
|
|
return 1;
|
|
}
|
|
|
|
# ifdef PSYC_TCP
|
|
startParse(string a) {
|
|
if (a == ".") restart();
|
|
else {
|
|
croak("_error_syntax_initialization",
|
|
"The protocol begins with a dot on a line by itself.");
|
|
QUIT
|
|
}
|
|
next_input_to(#'mmp_parse);
|
|
}
|
|
# endif
|
|
|
|
// also overrides createUser in net/server.c
|
|
createUser(string nick) {
|
|
D2(D("creating " PSYC_PATH "user for "+ nick +"\n");)
|
|
return named_clone(PSYC_PATH "user", nick);
|
|
}
|
|
|
|
qOrigin() { return origin_unl; }
|
|
|
|
sOrigin(origin) { P3(("sOrigin(%O) (%O) in %O\n", origin, origin_unl, ME))
|
|
unless (origin_unl) origin_unl = origin; }
|
|
|
|
#endif /* FORK }}} */
|