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psyced/world/drivers/ldmud/master/accept.c
psyc://psyced.org/~lynX 86f6ec1749 general autodetect
2011-08-24 09:13:43 +02:00

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// $Id: accept.c,v 1.119 2008/08/03 14:21:59 lynx Exp $ // vim:syntax=lpc:ts=8
//
// this file contains the glue between LDMUD and psyced to
// connect the socket ports to appropriately named objects.
//
#include "/local/config.h"
#ifdef Dmaster
# undef DEBUG
# define DEBUG Dmaster
#endif
#include NET_PATH "include/net.h"
#include NET_PATH "include/services.h"
#include DRIVER_PATH "include/driver.h"
#include CONFIG_PATH "config.h"
#include DRIVER_PATH "sys/tls.h"
#if __EFUN_DEFINED__(psyc_parse)
# define AUTODETECT 1 // use TLS autodetect if libpsyc is available
#else
# define AUTODETECT 0
# ifdef SPYC_PATH
# echo PSYC 1.0 will not work: libpsyc is not enabled in driver.
# endif
#endif
volatile int shutdown_in_progress = 0;
// not part of the master/driver API.. this is called from the library
void notify_shutdown_first(int progress) {
P3(("%O notify_shutdown_first(%O)\n", ME, progress))
shutdown_in_progress = progress;
}
#ifndef UID2NICK
# ifdef _userid_nick_mapping
# define UID2NICK(uid) ([ _userid_nick_mapping ])[uid]
# endif
#endif
/*
* This function is called every time a TCP connection is established.
* It dispatches the ports to the protocol implementations.
* input_to() can't be called from here.
*
* uid is only passed if USE_AUTHLOCAL is built into the driver.
*
* strange how int port and string service came into existence here
* since the driver isn't passing such arguments and there is no
* reason to call this from anywhere else. i presume they are a
* mistake!
*/
object connect(int uid, int port, string service) {
int peerport;
mixed arg, t;
unless (port) port = query_mud_port();
// now that's a bit of preprocessor magic you don't need to understand.. ;)
D2( if (uid) D("master:connected on port "+ port +" by uid "
+ uid +"("+ service + ")\n");
else) {
D3(D("master:connected on port "+port
+" by "+query_ip_name()+"\n");)
}
#ifndef H_DEFAULT_PROMPT
set_prompt("");
#endif
if (shutdown_in_progress) {
PT(("shutdown_in_progress(%O): putting connection from %O on hold\n",
shutdown_in_progress, query_ip_name(ME)))
// put the connection on hold to avoid further reconnects
return clone_object(NET_PATH "utility/onhold");
}
#define TLS_INIT \
if (tls_available()) { \
t = tls_init_connection(ME); \
if (t < 0 && t != ERR_TLS_NOT_DETECTED) { \
P2(( "TLS(%O) on port %O: %O\n", t, port, tls_error(t) )); \
} \
}
// doesn't work. at this point autodetect hasn't completed.. so to
// make sure TLS is enabled we need to check again later in the
// server object.. FIXME :(
#define TLS_ENFORCE \
if (tls_query_connection_state(ME) == 0) \
return (object) 0;
#if __EFUN_DEFINED__(tls_want_peer_certificate)
// Specify that a subsequent call to tls_init_connection
// should request a peer certificate.
# define TLS_INIT_GET_CERT \
if (tls_available()) { \
tls_want_peer_certificate(ME); \
t = tls_init_connection(ME); \
if (t < 0 && t != ERR_TLS_NOT_DETECTED) { \
P2(( "TLS(%O) on port %O: %O\n", t, port, tls_error(t) )); \
} \
}
#else
# define TLS_INIT_GET_CERT TLS_INIT
#endif
// in the first switch we handle ports that MUST not support
// immediate TLS (currently that's just 5269) or that want a
// peer certificate from the other side (PSYC). for all other
// ports the default is to attempt a TLS autodetection.
switch(port) {
#if HAS_PORT(JABBER_S2S_PORT, JABBER_PATH)
case JABBER_S2S_PORT:
# ifdef DRIVER_HAS_CALL_BY_REFERENCE
arg = ME;
query_ip_number(&arg);
// this assumes network byte order provided by driver
peerport = pointerp(arg) ? (arg[2]*256 + arg[3]) : 0;
if (peerport < 0) peerport = 65536 + peerport;
if (peerport == JABBER_S2S_SERVICE) peerport = 0;
# else
// as long as the object names don't collide, this is okay too
peerport = 65536 + random(9999999);
# endif
# if __EFUN_DEFINED__(enable_telnet)
enable_telnet(0);
# endif
t = "S:xmpp:"+query_ip_number();
// it's just an object name, but let's be consequent minus peerport
if (peerport) t += ":-"+peerport;
# ifdef _flag_log_sockets_XMPP
SIMUL_EFUN_FILE -> log_file("RAW_XMPP", "\n\n%O: %O -> load(%O, %O)",
ME, t,
# ifdef _flag_log_hosts
query_ip_number(),
# else
"?",
# endif
-peerport);
# endif
P3(("%O -> load(%O, %O)\n", t, query_ip_number(), -peerport))
return t -> load(query_ip_number(), -peerport);
#endif
#if HAS_PORT(PSYCS_PORT, PSYC_PATH)
case PSYCS_PORT: // inofficial & temporary
TLS_INIT_GET_CERT
break;
#endif
#if HAS_PORT(PSYC_PORT, PSYC_PATH) && AUTODETECT
case PSYC_PORT:
// make TLS available on the default PSYC port
// using the autodetection feature (official approach)
TLS_INIT_GET_CERT
break;
#endif
#if HAS_PORT(SPYCS_PORT, SPYC_PATH)
case SPYCS_PORT: // even more inofficial
TLS_INIT_GET_CERT
break;
#endif
#if HAS_PORT(SPYC_PORT, SPYC_PATH) && AUTODETECT
case SPYC_PORT: // even more inofficial
TLS_INIT_GET_CERT
break;
#endif
default:
#if AUTODETECT
// if autodetect is available, let's check if this connection
// has TLS enabled and activate it, no matter which protocol.
TLS_INIT
#endif
break;
}
// if we got here, we may have initialized TLS successfully
switch(port) {
#if HAS_PORT(PSYCS_PORT, PSYC_PATH)
case PSYCS_PORT: // inofficial & temporary
TLS_ENFORCE
#endif
#if HAS_PORT(PSYC_PORT, PSYC_PATH)
case PSYC_PORT:
#endif
#if HAS_PORT(PSYC_PORT, PSYC_PATH) || HAS_PORT(PSYCS_PORT, PSYC_PATH)
# ifdef DRIVER_HAS_CALL_BY_REFERENCE
arg = ME;
query_ip_number(&arg);
// this assumes network byte order provided by driver
peerport = pointerp(arg) ? (arg[2]*256 + arg[3]) : 0;
if (peerport < 0) peerport = 65536 + peerport;
// no support for non-AF_INET nets yet
if (peerport == PSYC_SERVICE) peerport = 0;
# else
// as long as the object names don't collide, this is okay too
peerport = 65536 + random(9999999);
# endif
# ifdef DRIVER_HAS_RENAMED_CLONES
unless (service) service = "psyc";
t = "S:"+ service + ":"+ query_ip_number();
// tcp peerports cannot be connected to, so we use minus
if (peerport) t += ":-"+peerport;
# else
t = clone_object(PSYC_PATH "server");
# endif
// the psyc backend distinguishes listen ports from peers using minus
D3(D(S("%O -> load(%O, %O)\n", t, query_ip_number(), -peerport));)
return t -> load(query_ip_number(), -peerport);
#endif
// dedicated SPYC port.. should not be used
#if HAS_PORT(SPYCS_PORT, SPYC_PATH)
case SPYCS_PORT: // interim name for PSYC 1.0 according to SPEC
TLS_ENFORCE
#endif // fall thru
#if HAS_PORT(SPYC_PORT, SPYC_PATH)
case SPYC_PORT:
#endif
#if HAS_PORT(SPYC_PORT, SPYC_PATH) || HAS_PORT(SPYCS_PORT, SPYC_PATH)
# if __EFUN_DEFINED__(enable_binary)
enable_binary(ME);
# endif
# ifdef DRIVER_HAS_CALL_BY_REFERENCE
arg = ME;
query_ip_number(&arg);
// this assumes network byte order provided by driver
peerport = pointerp(arg) ? (arg[2]*256 + arg[3]) : 0;
if (peerport < 0) peerport = 65536 + peerport;
// no support for non-AF_INET nets yet
if (peerport == PSYC_SERVICE) peerport = 0;
# else
// as long as the object names don't collide, this is okay too
peerport = 65536 + random(9999999);
# endif
# ifdef DRIVER_HAS_RENAMED_CLONES
t = "S:spyc:"+query_ip_number();
// tcp peerports cannot be connected to, so we use minus
if (peerport) t += ":-"+peerport;
# else
t = clone_object(SPYC_PATH "server");
# endif
// the psyc backend distinguishes listen ports from peers using minus
D3(D(S("%O -> load(%O, %O)\n", t, query_ip_number(), -peerport));)
return t -> load(query_ip_number(), -peerport);
#endif
#if HAS_PORT(POP3S_PORT, POP3_PATH)
case POP3S_PORT:
TLS_ENFORCE
return clone_object(POP3_PATH "server");
#endif
#if HAS_PORT(POP3_PORT, POP3_PATH)
case POP3_PORT:
return clone_object(POP3_PATH "server");
#endif
#if HAS_PORT(SMTPS_PORT, NNTP_PATH)
case SMTPS_PORT:
TLS_ENFORCE
return clone_object(SMTP_PATH "server");
#endif
#if HAS_PORT(SMTP_PORT, SMTP_PATH)
case SMTP_PORT:
return clone_object(SMTP_PATH "server");
#endif
// heldensagas little http app
#if HAS_PORT(SHT_PORT, SHT_PATH)
case SHT_PORT:
return clone_object(SHT_PATH "server");
#endif
#if HAS_PORT(NNTPS_PORT, NNTP_PATH)
case NNTPS_PORT:
TLS_ENFORCE
return clone_object(NNTP_PATH "server");
#endif
#if HAS_PORT(NNTP_PORT, NNTP_PATH)
case NNTP_PORT:
return clone_object(NNTP_PATH "server");
#endif
#if HAS_PORT(JABBERS_PORT, JABBER_PATH)
case JABBERS_PORT:
TLS_ENFORCE
return clone_object(JABBER_PATH "server");
#endif
#if HAS_PORT(JABBER_PORT, JABBER_PATH)
case JABBER_PORT:
# if __EFUN_DEFINED__(enable_telnet)
// we dont want the telnet machine most of the time
// but disabling and re-enabling it for telnet doesn't work
enable_telnet(0); // are you sure!???
# endif
return clone_object(JABBER_PATH "server");
#endif
#if 0 //__EFUN_DEFINED__(enable_binary)
// work in progress
case 8888:
enable_binary();
enable_telnet(0);
return clone_object(NET_PATH "socks/protocol");
case 1935:
enable_binary();
enable_telnet(0);
return clone_object(NET_PATH "rtmp/protocol");
#endif
#if HAS_PORT(IRCS_PORT, IRC_PATH)
case IRCS_PORT:
TLS_ENFORCE
return clone_object(IRC_PATH "server");
#endif
#if HAS_PORT(IRC_PORT, IRC_PATH)
case IRC_PORT:
return clone_object(IRC_PATH "server");
#endif
#if HAS_PORT(APPLET_PORT, APPLET_PATH)
case APPLET_PORT:
# if __EFUN_DEFINED__(enable_telnet)
// enable_telnet(0);
# endif
return clone_object(APPLET_PATH "server");
#endif
#if HAS_PORT(TELNETS_PORT, TELNET_PATH)
case TELNETS_PORT:
TLS_ENFORCE
// we could do the UID2NICK thing here, too, but why should we?
// what do you need tls for on a localhost tcp link?
return clone_object(TELNET_PATH "server");
#endif
#if HAS_PORT(TELNET_PORT, TELNET_PATH)
case TELNET_PORT:
t = clone_object(TELNET_PATH "server");
# ifdef UID2NICK
if (uid && (arg = UID2NICK(uid))) { t -> sName(arg); }
# endif
return t;
#endif
#if HAS_PORT(HTTPS_PORT, HTTP_PATH)
case HTTPS_PORT:
TLS_ENFORCE
return clone_object(HTTP_PATH "server");
#endif
// don't fall thru. allow for https: to be available without http:
#if HAS_PORT(HTTP_PORT, HTTP_PATH)
case HTTP_PORT:
return clone_object(HTTP_PATH "server");
#endif
#if HAS_PORT(MUDS_PORT, MUD_PATH)
case MUDS_PORT:
TLS_ENFORCE
return clone_object(MUD_PATH "login");
#endif
#if HAS_PORT(MUD_PORT, MUD_PATH)
default:
// if you want to multiplex psyced with an LPMUD game
// set_prompt("> ");
return clone_object(MUD_PATH "login");
#endif
}
P0(("Received connection on port %O which isn't configured.\n", port));
return (object)0;
}
#ifdef DRIVER_HAS_RENAMED_CLONES
// named clones -lynx
object compile_object(string file) {
string path, name;
object rob;
P3((">> compile_object(%O)\n", file))
# ifdef PSYC_PATH
if (abbrev("S:psyc:", file)) {
rob = clone_object(PSYC_PATH "server");
D2(if (rob) PP(("NAMED CLONE: %O => %s\n", rob, file));)
return rob;
}
if (abbrev("psyc:", file)) {
# ifdef USE_SPYC
# echo Using SPYC by default! Yeeha!
rob = clone_object(SPYC_PATH "active");
# else
rob = clone_object(PSYC_PATH "active");
# endif
D2(if (rob) PP(("NAMED CLONE: %O => %s\n", rob, file));)
return rob;
}
# endif
# ifdef SPYC_PATH
if (abbrev("S:spyc:", file)) {
rob = clone_object(SPYC_PATH "server");
D2(if (rob) PP(("NAMED CLONE: %O => %s\n", rob, file));)
return rob;
}
if (abbrev("spyc:", file)) {
rob = clone_object(SPYC_PATH "active");
D2(if (rob) PP(("NAMED CLONE: %O => %s\n", rob, file));)
return rob;
}
# endif
# ifdef HTTP_PATH
// match both http:/ and https:/ objects ;D
if (abbrev("http", file)) {
rob = clone_object(HTTP_PATH "fetch");
// driver has the habit of removing double slash in object name
file = replace(file, ":/", "://");
if (rob) rob->fetch(file[..<3]);
return rob;
}
if (abbrev("xmlrpc:", file)) {
rob = clone_object(HTTP_PATH "xmlrpc");
if (rob) rob->fetch("http://" + file[7..<3]);
return rob;
}
# endif
if (sscanf(file, "place/%s.c", name) && name != "") {
#ifdef SANDBOX
string t;
#endif
unless (name = SIMUL_EFUN_FILE->legal_name(name, 1))
return (object)0;
#ifdef _flag_enable_module_microblogging
string username, channel;
if (sscanf(file, "place/~%s#%s", username, channel)) {
object p = SIMUL_EFUN_FILE->summon_person(username, NET_PATH "user");
unless (p && !p->isNewbie()) {
P3(("PLACE %O NOT CLONED: %O isn't a registered user\n", name, username));
return (object)0;
}
if (rob = clone_object(NET_PATH "place/userthreads")) {
PP(("PLACE CLONED: %O becomes %O\n", rob, file));
rob->sName(name);
return rob;
} else {
P3(("ERROR: could not clone place %O\n", name));
return (object)0;
}
}
#endif
#ifdef SANDBOX
if (file_size(t = USER_PATH + name + ".c") != -1) {
rob = t -> sName(name);
D2(if (rob) PP(("USER PLACE loaded: %O becomes %O\n", rob, file));)
} else {
#endif
#ifdef _flag_disable_places_arbitrary
P2(("WARN: cloned places disabled by #define %O\n", file))
return (object)0;
#else
#ifdef _path_archetype_place_default
rob = clone_object(_path_archetype_place_default);
#else
rob = clone_object(NET_PATH "place/default");
#endif
rob -> sName(name);
D2(if (rob) PP(("PLACE CLONED: %O becomes %O\n", rob, file));)
#endif
#ifdef SANDBOX
}
#endif
return rob;
}
if (sscanf(file, "%s/text.c", path) && path != "") {
rob = clone_object(NET_PATH "text");
rob -> sPath(path);
D2(if (rob) PP(("DB CLONED: %O becomes %s/text\n", rob, path));)
return rob;
}
if (sscanf(file, "%s#%s.c", path, name) && name != "") {
unless (name = SIMUL_EFUN_FILE->legal_name(name))
return (object)0;
rob = clone_object(path);
rob -> sName(name);
D2(if (rob) PP(("NAMED CLONE: %O becomes %s of %s\n",
rob, name, path));)
return rob;
}
# ifdef JABBER_PATH
if (abbrev("S:xmpp:", file)) {
rob = clone_object(JABBER_PATH "gateway");
D2(if (rob) PP(("NAMED CLONE: %O => %s\n", rob, file));)
return rob;
}
if (abbrev("C:xmpp:", file)) {
rob = clone_object(JABBER_PATH "active");
D2(if (rob) PP(("NAMED CLONE: %O => %s\n", rob, file));)
return rob;
}
# endif
P3(("WARN: could not create %O\n", file))
return (object)0;
}
#endif
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