mirror of
https://github.com/matrix-construct/construct
synced 2024-08-27 11:55:17 +02:00
* Simplifies the export declarations for module developers. While MAPI III utilized a flexible key-value vector to eliminate positional arguments in a header initializer, now the developer simply makes a list of pointers to what they want to export for injection into IRCd. Example: mapi::header IRCD_MODULE { "mymod", "My module adds a command, a hook, and a CLICAP", &my_cmdtab, &some_hook, &clicaptab }; * Distributes the handlers for items passed to the above vector. Anyone can add a type-handler to the module system from anywhere in IRCd (and other modules?) When your type is encountered a handler is called providing the symbol name to read out of the module. Example in parser.cc: mods::add_loader<Message>([] (mod &loading, const std::string &symbol) { auto &msg(get<Message>(loading, symbol)); add_command(msg.name, msg); });
752 lines
21 KiB
C++
752 lines
21 KiB
C++
/*
|
|
* ircd-ratbox: A slightly useful ircd.
|
|
* m_server.c: Introduces a server.
|
|
*
|
|
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
|
|
* Copyright (C) 1996-2002 Hybrid Development Team
|
|
* Copyright (C) 2002-2005 ircd-ratbox development team
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
* USA
|
|
*/
|
|
|
|
using namespace ircd;
|
|
|
|
static const char server_desc[] =
|
|
"Provides the TS6 commands to introduce a new server to the network";
|
|
|
|
static void mr_server(struct MsgBuf *, client::client &, client::client &, int, const char **);
|
|
static void ms_server(struct MsgBuf *, client::client &, client::client &, int, const char **);
|
|
static void ms_sid(struct MsgBuf *, client::client &, client::client &, int, const char **);
|
|
|
|
static bool bogus_host(const char *host);
|
|
static void set_server_gecos(client::client &, const char *);
|
|
|
|
struct Message server_msgtab = {
|
|
"SERVER", 0, 0, 0, 0,
|
|
{{mr_server, 4}, mg_reg, mg_ignore, {ms_server, 4}, mg_ignore, mg_reg}
|
|
};
|
|
struct Message sid_msgtab = {
|
|
"SID", 0, 0, 0, 0,
|
|
{mg_ignore, mg_reg, mg_ignore, {ms_sid, 5}, mg_ignore, mg_reg}
|
|
};
|
|
|
|
mapi_clist_av1 server_clist[] = { &server_msgtab, &sid_msgtab, NULL };
|
|
|
|
DECLARE_MODULE_AV2(server, NULL, NULL, server_clist, NULL, NULL, NULL, NULL, server_desc);
|
|
|
|
/*
|
|
* mr_server - SERVER message handler
|
|
* parv[1] = servername
|
|
* parv[2] = serverinfo/hopcount
|
|
* parv[3] = serverinfo
|
|
*/
|
|
static void
|
|
mr_server(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
|
|
{
|
|
char info[REALLEN + 1];
|
|
const char *name;
|
|
client::client *target_p;
|
|
int hop;
|
|
unsigned int required_mask;
|
|
int ret;
|
|
|
|
name = parv[1];
|
|
hop = atoi(parv[2]);
|
|
rb_strlcpy(info, parv[3], sizeof(info));
|
|
|
|
if (is_handshake(client) && irccmp(client.name, name))
|
|
{
|
|
sendto_realops_snomask(sno::GENERAL, is_remote_connect(&client) ? L_NETWIDE : L_ALL,
|
|
"Server %s has unexpected name %s",
|
|
client.name, name);
|
|
ilog(L_SERVER, "Server %s has unexpected name %s",
|
|
log_client_name(&client, SHOW_IP), name);
|
|
exit_client(&client, &client, &client, "Server name mismatch");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Reject a direct nonTS server connection if we're TS_ONLY -orabidoo
|
|
*/
|
|
if(!DoesTS(&client))
|
|
{
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL, "Link %s dropped, non-TS server",
|
|
client.name);
|
|
exit_client(&client, &client, &client, "Non-TS server");
|
|
return;
|
|
}
|
|
|
|
if(bogus_host(name))
|
|
{
|
|
exit_client(&client, &client, &client, "Bogus server name");
|
|
return;
|
|
}
|
|
|
|
/* Now we just have to call check_server and everything should be
|
|
* check for us... -A1kmm. */
|
|
ret = check_server(name, &client);
|
|
switch (ret)
|
|
{
|
|
case 0:
|
|
/* success */
|
|
break;
|
|
case -1:
|
|
if(ConfigFileEntry.warn_no_nline)
|
|
{
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Unauthorised server connection attempt from %s: "
|
|
"No entry for servername %s",
|
|
"[@255.255.255.255]", name);
|
|
|
|
ilog(L_SERVER, "Access denied, no connect block for server %s%s",
|
|
EmptyString(client.name) ? name : "",
|
|
log_client_name(&client, SHOW_IP));
|
|
}
|
|
|
|
exit_client(&client, &client, &client, "Invalid servername.");
|
|
return;
|
|
/* NOT REACHED */
|
|
break;
|
|
|
|
case -2:
|
|
sendto_realops_snomask(sno::GENERAL, is_remote_connect(&client) ? L_NETWIDE : L_ALL,
|
|
"Unauthorised server connection attempt from %s: "
|
|
"Bad credentials for server %s",
|
|
"[@255.255.255.255]", name);
|
|
|
|
ilog(L_SERVER, "Access denied, invalid credentials for server %s%s",
|
|
EmptyString(client.name) ? name : "",
|
|
log_client_name(&client, SHOW_IP));
|
|
|
|
exit_client(&client, &client, &client, "Invalid credentials.");
|
|
return;
|
|
/* NOT REACHED */
|
|
break;
|
|
|
|
case -3:
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Unauthorised server connection attempt from %s: "
|
|
"Invalid host for server %s",
|
|
"[@255.255.255.255]", name);
|
|
|
|
ilog(L_SERVER, "Access denied, invalid host for server %s%s",
|
|
EmptyString(client.name) ? name : "",
|
|
log_client_name(&client, SHOW_IP));
|
|
|
|
exit_client(&client, &client, &client, "Invalid host.");
|
|
return;
|
|
/* NOT REACHED */
|
|
break;
|
|
|
|
/* servername is > HOSTLEN */
|
|
case -4:
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Invalid servername %s from %s",
|
|
name, "[@255.255.255.255]");
|
|
ilog(L_SERVER, "Access denied, invalid servername from %s",
|
|
log_client_name(&client, SHOW_IP));
|
|
|
|
exit_client(&client, &client, &client, "Invalid servername.");
|
|
return;
|
|
/* NOT REACHED */
|
|
break;
|
|
case -5:
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Connection from servername %s requires SSL/TLS but is plaintext",
|
|
name);
|
|
ilog(L_SERVER, "Access denied, requires SSL/TLS but is plaintext from %s",
|
|
log_client_name(&client, SHOW_IP));
|
|
|
|
exit_client(&client, &client, &client, "Access denied, requires SSL/TLS but is plaintext");
|
|
return;
|
|
case -6:
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Connection from servername %s has invalid certificate fingerprint %s",
|
|
name, client.certfp);
|
|
ilog(L_SERVER, "Access denied, invalid certificate fingerprint %s from %s",
|
|
client.certfp, log_client_name(&client, SHOW_IP));
|
|
|
|
exit_client(&client, &client, &client, "Invalid fingerprint.");
|
|
return;
|
|
default:
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Connection from servername %s rejected, unknown error %d",
|
|
name, ret);
|
|
ilog(L_SERVER, "Access denied, unknown error %d for server %s%s", ret,
|
|
EmptyString(client.name) ? name : "",
|
|
log_client_name(&client, SHOW_IP));
|
|
|
|
exit_client(&client, &client, &client, "Unknown error.");
|
|
return;
|
|
}
|
|
|
|
/* require TS6 for direct links */
|
|
if(!IsCapable(&client, CAP_TS6))
|
|
{
|
|
sendto_realops_snomask(sno::GENERAL, is_remote_connect(&client) ? L_NETWIDE : L_ALL,
|
|
"Link %s dropped, TS6 protocol is required", name);
|
|
exit_client(&client, &client, &client, "Incompatible TS version");
|
|
return;
|
|
}
|
|
|
|
/* check to ensure any "required" caps are set. --nenolod */
|
|
required_mask = serv_capindex.required();
|
|
if (!IsCapable(&client, required_mask))
|
|
{
|
|
const auto missing(serv_capindex.list(required_mask & ~client.localClient->caps));
|
|
sendto_realops_snomask(sno::GENERAL, is_remote_connect(&client) ? L_NETWIDE : L_ALL,
|
|
"Link %s dropped, required CAPABs [%s] are missing",
|
|
name, missing.c_str());
|
|
ilog(L_SERVER, "Link %s%s dropped, required CAPABs [%s] are missing",
|
|
EmptyString(client.name) ? name : "",
|
|
log_client_name(&client, SHOW_IP), missing.c_str());
|
|
/* Do not use '[' in the below message because it would cause
|
|
* it to be considered potentially unsafe (might disclose IP
|
|
* addresses)
|
|
*/
|
|
sendto_one(&client, "ERROR :Missing required CAPABs (%s)", missing.c_str());
|
|
exit_client(&client, &client, &client, "Missing required CAPABs");
|
|
|
|
return;
|
|
}
|
|
|
|
if((target_p = find_server(NULL, name)))
|
|
{
|
|
/*
|
|
* This link is trying feed me a server that I already have
|
|
* access through another path -- multiple paths not accepted
|
|
* currently, kill this link immediately!!
|
|
*
|
|
* Rather than KILL the link which introduced it, KILL the
|
|
* youngest of the two links. -avalon
|
|
*
|
|
* Definitely don't do that here. This is from an unregistered
|
|
* connect - A1kmm.
|
|
*/
|
|
if (target_p->servptr->flags & client::flags::SERVICE)
|
|
{
|
|
/* Assume any servers introduced by services
|
|
* are jupes.
|
|
* -- jilles
|
|
*/
|
|
sendto_one(&client, "ERROR :Server juped.");
|
|
}
|
|
else
|
|
{
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Attempt to re-introduce server %s from %s",
|
|
name, "[@255.255.255.255]");
|
|
ilog(L_SERVER, "Attempt to re-introduce server %s from %s",
|
|
name, log_client_name(&client, SHOW_IP));
|
|
|
|
sendto_one(&client, "ERROR :Server already exists.");
|
|
}
|
|
exit_client(&client, &client, &client, "Server Exists");
|
|
return;
|
|
}
|
|
|
|
if(has_id(&client) && (target_p = find_id(client.id)) != NULL)
|
|
{
|
|
sendto_realops_snomask(sno::GENERAL, is_remote_connect(&client) ? L_NETWIDE : L_ALL,
|
|
"Attempt to re-introduce SID %s from %s%s (already in use by %s)",
|
|
client.id,
|
|
EmptyString(client.name) ? name : "",
|
|
client.name, target_p->name);
|
|
ilog(L_SERVER, "Attempt to re-introduce SID %s from %s%s (already in use by %s)",
|
|
client.id,
|
|
EmptyString(client.name) ? name : "",
|
|
log_client_name(&client, SHOW_IP),
|
|
target_p->name);
|
|
|
|
sendto_one(&client, "ERROR :SID already exists.");
|
|
exit_client(&client, &client, &client, "SID Exists");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* if we are connecting (Handshake), we already have the name from the
|
|
* C:line in client.name
|
|
*/
|
|
|
|
rb_strlcpy(client.name, name, sizeof(client.name));
|
|
set_server_gecos(client, info);
|
|
client.hopcount = hop;
|
|
server_estab(&client);
|
|
}
|
|
|
|
/*
|
|
* ms_server - SERVER message handler
|
|
* parv[1] = servername
|
|
* parv[2] = serverinfo/hopcount
|
|
* parv[3] = serverinfo
|
|
*/
|
|
static void
|
|
ms_server(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
|
|
{
|
|
char info[REALLEN + 1];
|
|
/* same size as in s_misc.c */
|
|
const char *name;
|
|
client::client *target_p;
|
|
struct remote_conf *hub_p;
|
|
hook_data_client hdata;
|
|
int hop;
|
|
int hlined = 0;
|
|
int llined = 0;
|
|
rb_dlink_node *ptr;
|
|
char squitreason[160];
|
|
|
|
name = parv[1];
|
|
hop = atoi(parv[2]);
|
|
rb_strlcpy(info, parv[3], sizeof(info));
|
|
|
|
if(find_server(NULL, name))
|
|
{
|
|
/*
|
|
* This link is trying feed me a server that I already have
|
|
* access through another path -- multiple paths not accepted
|
|
* currently, kill this link immediately!!
|
|
*
|
|
* Rather than KILL the link which introduced it, KILL the
|
|
* youngest of the two links. -avalon
|
|
*
|
|
* I think that we should exit the link itself, not the introducer,
|
|
* and we should always exit the most recently received(i.e. the
|
|
* one we are receiving this SERVER for. -A1kmm
|
|
*
|
|
* You *cant* do this, if you link somewhere, it bursts you a server
|
|
* that already exists, then sends you a client burst, you squit the
|
|
* server, but you keep getting the burst of clients on a server that
|
|
* doesnt exist, although ircd can handle it, its not a realistic
|
|
* solution.. --fl_
|
|
*/
|
|
ilog(L_SERVER, "Link %s cancelled, server %s already exists",
|
|
client.name, name);
|
|
|
|
snprintf(squitreason, sizeof squitreason,
|
|
"Server %s already exists",
|
|
name);
|
|
exit_client(&client, &client, &me, squitreason);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* User nicks never have '.' in them and server names
|
|
* must always have '.' in them.
|
|
*/
|
|
if(strchr(name, '.') == NULL)
|
|
{
|
|
/*
|
|
* Server trying to use the same name as a person. Would
|
|
* cause a fair bit of confusion. Enough to make it hellish
|
|
* for a while and servers to send stuff to the wrong place.
|
|
*/
|
|
sendto_one(&client, "ERROR :Nickname %s already exists!", name);
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Link %s cancelled: Server/nick collision on %s",
|
|
client.name, name);
|
|
ilog(L_SERVER, "Link %s cancelled: Server/nick collision on %s",
|
|
client.name, name);
|
|
|
|
exit_client(&client, &client, &client, "Nick as Server");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Server is informing about a new server behind
|
|
* this link. Create REMOTE server structure,
|
|
* add it to list and propagate word to my other
|
|
* server links...
|
|
*/
|
|
|
|
/*
|
|
* See if the newly found server is behind a guaranteed
|
|
* leaf. If so, close the link.
|
|
*
|
|
*/
|
|
RB_DLINK_FOREACH(ptr, hubleaf_conf_list.head)
|
|
{
|
|
hub_p = (remote_conf *)ptr->data;
|
|
|
|
if(match(hub_p->server, client.name) && match(hub_p->host, name))
|
|
{
|
|
if(hub_p->flags & CONF_HUB)
|
|
hlined++;
|
|
else
|
|
llined++;
|
|
}
|
|
}
|
|
|
|
/* Ok, this way this works is
|
|
*
|
|
* A server can have a CONF_HUB allowing it to introduce servers
|
|
* behind it.
|
|
*
|
|
* connect {
|
|
* name = "irc.bighub.net";
|
|
* hub_mask="*";
|
|
* ...
|
|
*
|
|
* That would allow "irc.bighub.net" to introduce anything it wanted..
|
|
*
|
|
* However
|
|
*
|
|
* connect {
|
|
* name = "irc.somehub.fi";
|
|
* hub_mask="*";
|
|
* leaf_mask="*.edu";
|
|
*...
|
|
* Would allow this server in finland to hub anything but
|
|
* .edu's
|
|
*/
|
|
|
|
/* Ok, check &client can hub the new server */
|
|
if(!hlined)
|
|
{
|
|
/* OOOPs nope can't HUB */
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL, "Non-Hub link %s introduced %s.",
|
|
client.name, name);
|
|
ilog(L_SERVER, "Non-Hub link %s introduced %s.",
|
|
client.name, name);
|
|
|
|
snprintf(squitreason, sizeof squitreason,
|
|
"No matching hub_mask for %s",
|
|
name);
|
|
exit_client(NULL, &client, &me, squitreason);
|
|
return;
|
|
}
|
|
|
|
/* Check for the new server being leafed behind this HUB */
|
|
if(llined)
|
|
{
|
|
/* OOOPs nope can't HUB this leaf */
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Link %s introduced leafed server %s.",
|
|
client.name, name);
|
|
ilog(L_SERVER, "Link %s introduced leafed server %s.",
|
|
client.name, name);
|
|
|
|
snprintf(squitreason, sizeof squitreason,
|
|
"Matching leaf_mask for %s",
|
|
name);
|
|
exit_client(NULL, &client, &me, squitreason);
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
if(strlen(name) > HOSTLEN)
|
|
{
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Link %s introduced server with invalid servername %s",
|
|
client.name, name);
|
|
ilog(L_SERVER, "Link %s introduced server with invalid servername %s",
|
|
client.name, name);
|
|
|
|
exit_client(NULL, &client, &me, "Invalid servername introduced.");
|
|
return;
|
|
}
|
|
|
|
target_p = make_client(&client);
|
|
make_serv(*target_p);
|
|
target_p->hopcount = hop;
|
|
|
|
rb_strlcpy(target_p->name, name, sizeof(target_p->name));
|
|
|
|
set_server_gecos(*target_p, info);
|
|
|
|
target_p->servptr = &source;
|
|
|
|
set_server(*target_p);
|
|
|
|
rb_dlinkAddTail(target_p, &target_p->node, &global_client_list);
|
|
rb_dlinkAddTailAlloc(target_p, &global_serv_list);
|
|
add_to_client_hash(target_p->name, target_p);
|
|
target_p->lnode = servers(serv(*target_p)).emplace(end(servers(serv(*target_p))), target_p);
|
|
|
|
nameinfo(serv(*target_p)) = cache::serv::connect(target_p->name, target_p->info, is_hidden(*target_p));
|
|
|
|
sendto_server(&client, NULL, NOCAPS, NOCAPS,
|
|
":%s SERVER %s %d :%s%s",
|
|
source.name, target_p->name, target_p->hopcount + 1,
|
|
is_hidden(*target_p) ? "(H) " : "", target_p->info);
|
|
|
|
sendto_realops_snomask(sno::EXTERNAL, L_ALL,
|
|
"Server %s being introduced by %s", target_p->name, source.name);
|
|
|
|
/* quick, dirty EOB. you know you love it. */
|
|
sendto_one(target_p, ":%s PING %s %s", get_id(&me, target_p), me.name, target_p->name);
|
|
|
|
hdata.client = &source;
|
|
hdata.target = target_p;
|
|
call_hook(h_server_introduced, &hdata);
|
|
}
|
|
|
|
static void
|
|
ms_sid(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
|
|
{
|
|
client::client *target_p;
|
|
struct remote_conf *hub_p;
|
|
hook_data_client hdata;
|
|
rb_dlink_node *ptr;
|
|
int hlined = 0;
|
|
int llined = 0;
|
|
char squitreason[160];
|
|
|
|
/* collision on the name? */
|
|
if(find_server(NULL, parv[1]) != NULL)
|
|
{
|
|
ilog(L_SERVER, "Link %s cancelled, server %s already exists",
|
|
client.name, parv[1]);
|
|
|
|
snprintf(squitreason, sizeof squitreason,
|
|
"Server %s already exists",
|
|
parv[1]);
|
|
exit_client(NULL, &client, &me, squitreason);
|
|
return;
|
|
}
|
|
|
|
/* collision on the SID? */
|
|
if((target_p = find_id(parv[3])) != NULL)
|
|
{
|
|
sendto_wallops_flags(umode::WALLOP, &me,
|
|
"Link %s cancelled, SID %s for server %s already in use by %s",
|
|
client.name, parv[3], parv[1], target_p->name);
|
|
sendto_server(NULL, NULL, CAP_TS6, NOCAPS,
|
|
":%s WALLOPS :Link %s cancelled, SID %s for server %s already in use by %s",
|
|
me.id, client.name, parv[3], parv[1], target_p->name);
|
|
ilog(L_SERVER, "Link %s cancelled, SID %s for server %s already in use by %s",
|
|
client.name, parv[3], parv[1], target_p->name);
|
|
|
|
snprintf(squitreason, sizeof squitreason,
|
|
"SID %s for %s already in use by %s",
|
|
parv[3], parv[1], target_p->name);
|
|
exit_client(NULL, &client, &me, squitreason);
|
|
return;
|
|
}
|
|
|
|
if(bogus_host(parv[1]) || strlen(parv[1]) > HOSTLEN)
|
|
{
|
|
sendto_one(&client, "ERROR :Invalid servername");
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Link %s cancelled, servername %s invalid",
|
|
client.name, parv[1]);
|
|
ilog(L_SERVER, "Link %s cancelled, servername %s invalid",
|
|
client.name, parv[1]);
|
|
|
|
exit_client(NULL, &client, &me, "Bogus server name");
|
|
return;
|
|
}
|
|
|
|
if(!rfc1459::is_digit(parv[3][0]) ||
|
|
!rfc1459::is_id(parv[3][1]) ||
|
|
!rfc1459::is_id(parv[3][2]) ||
|
|
parv[3][3] != '\0')
|
|
{
|
|
sendto_one(&client, "ERROR :Invalid SID");
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Link %s cancelled, SID %s invalid",
|
|
client.name, parv[3]);
|
|
ilog(L_SERVER, "Link %s cancelled, SID %s invalid",
|
|
client.name, parv[3]);
|
|
|
|
exit_client(NULL, &client, &me, "Bogus SID");
|
|
return;
|
|
}
|
|
|
|
/* for the directly connected server:
|
|
* H: allows it to introduce a server matching that mask
|
|
* L: disallows it introducing a server matching that mask
|
|
*/
|
|
RB_DLINK_FOREACH(ptr, hubleaf_conf_list.head)
|
|
{
|
|
hub_p = (remote_conf *)ptr->data;
|
|
|
|
if(match(hub_p->server, client.name) && match(hub_p->host, parv[1]))
|
|
{
|
|
if(hub_p->flags & CONF_HUB)
|
|
hlined++;
|
|
else
|
|
llined++;
|
|
}
|
|
}
|
|
|
|
/* no matching hub_mask */
|
|
if(!hlined)
|
|
{
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Non-Hub link %s introduced %s.",
|
|
client.name, parv[1]);
|
|
ilog(L_SERVER, "Non-Hub link %s introduced %s.",
|
|
client.name, parv[1]);
|
|
|
|
snprintf(squitreason, sizeof squitreason,
|
|
"No matching hub_mask for %s",
|
|
parv[1]);
|
|
exit_client(NULL, &client, &me, squitreason);
|
|
return;
|
|
}
|
|
|
|
/* matching leaf_mask */
|
|
if(llined)
|
|
{
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
|
"Link %s introduced leafed server %s.",
|
|
client.name, parv[1]);
|
|
ilog(L_SERVER, "Link %s introduced leafed server %s.",
|
|
client.name, parv[1]);
|
|
|
|
snprintf(squitreason, sizeof squitreason,
|
|
"Matching leaf_mask for %s",
|
|
parv[1]);
|
|
exit_client(NULL, &client, &me, squitreason);
|
|
return;
|
|
}
|
|
|
|
/* ok, alls good */
|
|
target_p = make_client(&client);
|
|
make_serv(*target_p);
|
|
|
|
rb_strlcpy(target_p->name, parv[1], sizeof(target_p->name));
|
|
target_p->hopcount = atoi(parv[2]);
|
|
rb_strlcpy(target_p->id, parv[3], sizeof(target_p->id));
|
|
set_server_gecos(*target_p, parv[4]);
|
|
|
|
target_p->servptr = &source;
|
|
set_server(*target_p);
|
|
|
|
rb_dlinkAddTail(target_p, &target_p->node, &global_client_list);
|
|
rb_dlinkAddTailAlloc(target_p, &global_serv_list);
|
|
add_to_client_hash(target_p->name, target_p);
|
|
add_to_id_hash(target_p->id, target_p);
|
|
target_p->lnode = servers(serv(*target_p)).emplace(end(servers(serv(*target_p))), target_p);
|
|
|
|
nameinfo(serv(*target_p)) = cache::serv::connect(target_p->name, target_p->info, is_hidden(*target_p));
|
|
|
|
sendto_server(&client, NULL, CAP_TS6, NOCAPS,
|
|
":%s SID %s %d %s :%s%s",
|
|
source.id, target_p->name, target_p->hopcount + 1,
|
|
target_p->id, is_hidden(*target_p) ? "(H) " : "", target_p->info);
|
|
|
|
sendto_realops_snomask(sno::EXTERNAL, L_ALL,
|
|
"Server %s being introduced by %s", target_p->name, source.name);
|
|
|
|
/* quick, dirty EOB. you know you love it. */
|
|
sendto_one(target_p, ":%s PING %s %s",
|
|
get_id(&me, target_p), me.name, get_id(target_p, target_p));
|
|
|
|
hdata.client = &source;
|
|
hdata.target = target_p;
|
|
call_hook(h_server_introduced, &hdata);
|
|
}
|
|
|
|
/* set_server_gecos()
|
|
*
|
|
* input - pointer to client
|
|
* output - none
|
|
* side effects - servers gecos field is set
|
|
*/
|
|
static void
|
|
set_server_gecos(client::client &client, const char *info)
|
|
{
|
|
/* check the info for [IP] */
|
|
if(info[0])
|
|
{
|
|
char *p;
|
|
char *s;
|
|
|
|
s = LOCAL_COPY(info);
|
|
|
|
/* we should only check the first word for an ip */
|
|
if((p = strchr(s, ' ')))
|
|
*p = '\0';
|
|
|
|
/* check for a ] which would symbolise an [IP] */
|
|
if(strchr(s, ']'))
|
|
{
|
|
/* set s to after the first space */
|
|
if(p)
|
|
s = ++p;
|
|
else
|
|
s = NULL;
|
|
}
|
|
/* no ], put the space back */
|
|
else if(p)
|
|
*p = ' ';
|
|
|
|
/* p may have been set to a trailing space, so check s exists and that
|
|
* it isnt \0 */
|
|
if(s && (*s != '\0'))
|
|
{
|
|
/* a space? if not (H) could be the last part of info.. */
|
|
if((p = strchr(s, ' ')))
|
|
*p = '\0';
|
|
|
|
/* check for (H) which is a hidden server */
|
|
if(!strcmp(s, "(H)"))
|
|
{
|
|
set_hidden(client);
|
|
|
|
/* if there was no space.. theres nothing to set info to */
|
|
if(p)
|
|
s = ++p;
|
|
else
|
|
s = NULL;
|
|
}
|
|
else if(p)
|
|
*p = ' ';
|
|
|
|
/* if there was a trailing space, s could point to \0, so check */
|
|
if(s && (*s != '\0'))
|
|
{
|
|
rb_strlcpy(client.info, s, sizeof(client.info));
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
rb_strlcpy(client.info, "(Unknown Location)", sizeof(client.info));
|
|
}
|
|
|
|
/*
|
|
* bogus_host
|
|
*
|
|
* inputs - hostname
|
|
* output - true if a bogus hostname input, false if its valid
|
|
* side effects - none
|
|
*/
|
|
static bool
|
|
bogus_host(const char *host)
|
|
{
|
|
bool bogus_server = false;
|
|
const char *s;
|
|
int dots = 0;
|
|
|
|
for(s = host; *s; s++)
|
|
{
|
|
if(!rfc1459::is_serv(*s))
|
|
{
|
|
bogus_server = true;
|
|
break;
|
|
}
|
|
if('.' == *s)
|
|
++dots;
|
|
}
|
|
|
|
if(!dots || bogus_server)
|
|
return true;
|
|
|
|
return false;
|
|
}
|