*/
#include "config.h"
-#if 0
-/*
- * No need to include handlers.h here the signatures must match
- * and we don't need to force a rebuild of all the handlers everytime
- * we add a new one to the list. --Bleep
- */
-#include "handlers.h"
-#endif /* 0 */
#include "client.h"
#include "hash.h"
#include "ircd.h"
return ret;
}
-
-
-#if 0
-/*
- * m_server
- *
- * parv[0] = sender prefix
- * parv[1] = servername
- * parv[2] = hopcount
- * parv[3] = start timestamp
- * parv[4] = link timestamp
- * parv[5] = major protocol version: P09/P10
- * parv[parc-1] = serverinfo
- * If cptr is P10:
- * parv[6] = "YMM", where 'Y' is the server numeric and "MM" is the
- * numeric nick mask of this server.
- * parv[7] = 0 (not used yet, mandatory unsigned int after u2.10.06)
- */
-int m_server(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
-{
- char* ch;
- int i;
- char info[REALLEN + 1];
- char* host;
- struct Client* acptr;
- struct Client* bcptr;
- struct Client* LHcptr = 0;
- struct ConfItem* aconf = 0;
- struct ConfItem* lhconf = 0;
- struct Jupe* ajupe = 0;
- int hop;
- int ret;
- int active_lh_line = 0;
- unsigned short prot;
- time_t start_timestamp;
- time_t timestamp = 0;
- time_t recv_time;
- time_t ghost = 0;
-
- if (IsUser(cptr))
- {
- sendto_one(cptr, err_str(ERR_ALREADYREGISTRED), me.name, parv[0]); /* XXX DEAD */
- return 0;
- }
-
- if (IsUserPort(cptr))
- return exit_client_msg(cptr, cptr, &me,
- "You cannot connect a server to a user port; connect to %s port %u",
- me.name, server_port);
-
- recv_time = TStime();
- info[0] = '\0';
- if (parc < 7)
- {
- return need_more_params(sptr, "SERVER");
- return exit_client(cptr, cptr, &me, "Need more parameters");
- }
- host = parv[1];
- /*
- * Detect protocol
- */
- if (strlen(parv[5]) != 3 || (parv[5][0] != 'P' && parv[5][0] != 'J'))
- return exit_client_msg(cptr, sptr, &me, "Bogus protocol (%s)", parv[5]);
-
- if (!IsServer(cptr)) /* Don't allow silently connecting a server */
- *parv[5] = 'J';
-
- prot = atoi(parv[5] + 1);
- if (prot > atoi(MAJOR_PROTOCOL))
- prot = atoi(MAJOR_PROTOCOL);
- /*
- * Because the previous test is only in 2.10, the following is needed
- * till all servers are 2.10:
- */
- if (IsServer(cptr) && prot > Protocol(cptr))
- prot = Protocol(cptr);
- hop = atoi(parv[2]);
- start_timestamp = atoi(parv[3]);
- timestamp = atoi(parv[4]);
- Debug((DEBUG_INFO, "Got SERVER %s with timestamp [%s] age " TIME_T_FMT " ("
- TIME_T_FMT ")", host, parv[4], start_timestamp, me.serv->timestamp));
- if ((timestamp < OLDEST_TS || (hop == 1 && start_timestamp < OLDEST_TS)))
- {
- return exit_client_msg(cptr, sptr, &me,
- "Bogus timestamps (%s %s)", parv[3], parv[4]);
- }
- ircd_strncpy(info, parv[parc - 1], REALLEN);
- info[REALLEN] = '\0';
- if (prot < atoi(MINOR_PROTOCOL)) {
- sendto_ops("Got incompatible protocol version (%s) from %s", /* XXX DEAD */
- parv[5], cptr->name);
- return exit_new_server(cptr, sptr, host, timestamp,
- "Incompatible protocol: %s", parv[5]);
- }
- /*
- * Check for "FRENCH " infection ;-) (actually this should
- * be replaced with routine to check the hostname syntax in
- * general). [ This check is still needed, even after the parse
- * is fixed, because someone can send "SERVER :foo bar " ].
- * Also, changed to check other "difficult" characters, now
- * that parse lets all through... --msa
- */
- if (strlen(host) > HOSTLEN)
- host[HOSTLEN] = '\0';
- for (ch = host; *ch; ch++)
- if (*ch <= ' ' || *ch > '~')
- break;
- if (*ch || !strchr(host, '.'))
- {
- sendto_ops("Bogus server name (%s) from %s", host, cptr->name); /* XXX DEAD */
- return exit_client_msg(cptr, cptr, &me, "Bogus server name (%s)", host);
- }
-
- if (IsServer(cptr))
- {
- /*
- * A local server introduces a new server behind this link.
- * Check if this is allowed according L:, H: and Q: lines.
- */
- if (info[0] == '\0')
- return exit_client_msg(cptr, cptr, &me,
- "No server info specified for %s", host);
- /*
- * See if the newly found server is behind a guaranteed
- * leaf (L-line). If so, close the link.
- */
- if ((lhconf = find_conf_byhost(cptr->confs, cptr->name, CONF_LEAF)) &&
- (!lhconf->port || (hop > lhconf->port)))
- {
- /*
- * L: lines normally come in pairs, here we try to
- * make sure that the oldest link is squitted, not
- * both.
- */
- active_lh_line = 1;
- if (timestamp <= cptr->serv->timestamp)
- LHcptr = 0; /* Kill incoming server */
- else
- LHcptr = cptr; /* Squit ourselfs */
- }
- else if (!(lhconf = find_conf_byname(cptr->confs, cptr->name, CONF_HUB)) ||
- (lhconf->port && (hop > lhconf->port)))
- {
- struct Client *ac3ptr;
- active_lh_line = 2;
- /* Look for net junction causing this: */
- LHcptr = 0; /* incoming server */
- if (*parv[5] != 'J') {
- for (ac3ptr = sptr; ac3ptr != &me; ac3ptr = ac3ptr->serv->up) {
- if (IsJunction(ac3ptr)) {
- LHcptr = ac3ptr;
- break;
- }
- }
- }
- }
- }
-
- if (IsUnknown(cptr) || IsHandshake(cptr))
- {
- const char* encr;
-
- /*
- * A local link that is still in undefined state wants
- * to be a SERVER. Check if this is allowed and change
- * status accordingly...
- */
- /*
- * If there is more then one server on the same machine
- * that we try to connect to, it could be that the /CONNECT
- * <mask> caused this connect to be put at the wrong place
- * in the hashtable. --Run
- * Same thing for Unknown connections that first send NICK.
- * --Xorath
- * Better check if the two strings are (caseless) identical
- * and not mess with hash internals.
- * --Nemesi
- */
- if ((!(EmptyString(cptr->name)))
- && (IsUnknown(cptr) || IsHandshake(cptr))
- && 0 != ircd_strcmp(cptr->name, host))
- hChangeClient(cptr, host);
- ircd_strncpy(cptr->name, host, HOSTLEN);
- ircd_strncpy(cptr->info, info[0] ? info : me.name, REALLEN);
- cptr->hopcount = hop;
-
- /* check connection rules */
- if (0 != conf_eval_crule(host, CRULE_ALL)) {
- ServerStats->is_ref++;
- sendto_ops("Refused connection from %s.", cptr->name); /* XXX DEAD */
- return exit_client(cptr, cptr, &me, "Disallowed by connection rule");
- }
- if (conf_check_server(cptr)) {
- ++ServerStats->is_ref;
- sendto_ops("Received unauthorized connection from %s.", cptr->name); /* XXX DEAD */
- return exit_client(cptr, cptr, &me, "No C/N conf lines");
- }
-
- host = cptr->name;
-
- update_load();
-
- if (!(aconf = find_conf_byname(cptr->confs, host, CONF_SERVER))) {
- ++ServerStats->is_ref;
-#ifndef GODMODE
- sendto_ops("Access denied. No conf line for server %s", cptr->name); /* XXX DEAD */
- return exit_client_msg(cptr, cptr, &me,
- "Access denied. No conf line for server %s", cptr->name);
-#else /* GODMODE */
- sendto_ops("General C/N: line active: No line for server %s", cptr->name); /* XXX DEAD */
- aconf =
- find_conf_byname(cptr->confs, "general.undernet.org", CONF_SERVER);
- if (!aconf) {
- sendto_ops("Neither C/N lines for server %s nor " /* XXX DEAD */
- "\"general.undernet.org\"", cptr->name);
- return exit_client_msg(cptr, cptr, &me,
- "No C/N lines for server %s", cptr->name);
- }
-#endif /* GODMODE */
- }
-#ifdef CRYPT_LINK_PASSWORD
- /* passwd may be NULL. Head it off at the pass... */
- if (*cptr->passwd)
- {
- encr = ircd_crypt(cptr->passwd, aconf->passwd);
- }
- else
- encr = "";
-#else
- encr = cptr->passwd;
-#endif /* CRYPT_LINK_PASSWORD */
-#ifndef GODMODE
- if (*aconf->passwd && !!strcmp(aconf->passwd, encr)) {
- ++ServerStats->is_ref;
- sendto_ops("Access denied (passwd mismatch) %s", cptr->name); /* XXX DEAD */
- return exit_client_msg(cptr, cptr, &me,
- "No Access (passwd mismatch) %s", cptr->name);
- }
-#endif /* not GODMODE */
- memset(cptr->passwd, 0, sizeof(cptr->passwd));
-
-#ifndef HUB
- for (i = 0; i <= HighestFd; i++)
- if (LocalClientArray[i] && IsServer(LocalClientArray[i])) {
- active_lh_line = 3;
- LHcptr = 0;
- break;
- }
-#endif
- }
-
- /*
- * We want to find IsConnecting() and IsHandshake() too,
- * use FindClient().
- * The second finds collisions with numeric representation of existing
- * servers - these shouldn't happen anymore when all upgraded to 2.10.
- * -- Run
- */
- while ((acptr = FindClient(host)) ||
- (parc > 7 && (acptr = FindNServer(parv[6]))))
- {
- /*
- * This link is trying feed me a server that I already have
- * access through another path
- *
- * Do not allow Uworld to do this.
- * Do not allow servers that are juped.
- * Do not allow servers that have older link timestamps
- * then this try.
- * Do not allow servers that use the same numeric as an existing
- * server, but have a different name.
- *
- * If my ircd.conf sucks, I can try to connect to myself:
- */
- if (acptr == &me)
- return exit_client_msg(cptr, cptr, &me,
- "nick collision with me, check server number in M:? (%s)", host);
- /*
- * Detect wrong numeric.
- */
- if (0 != ircd_strcmp(acptr->name, host))
- {
- sendto_serv_butone(cptr, /* XXX DEAD */
- ":%s WALLOPS :SERVER Numeric Collision: %s != %s",
- me.name, acptr->name, host);
- return exit_client_msg(cptr, cptr, &me,
- "NUMERIC collision between %s and %s."
- " Is your server numeric correct ?", host, acptr->name);
- }
- /*
- * Kill our try, if we had one.
- */
- if (IsConnecting(acptr))
- {
- if (!active_lh_line && exit_client(cptr, acptr, &me,
- "Just connected via another link") == CPTR_KILLED)
- return CPTR_KILLED;
- /*
- * We can have only ONE 'IsConnecting', 'IsHandshake' or
- * 'IsServer', because new 'IsConnecting's are refused to
- * the same server if we already had it.
- */
- break;
- }
- /*
- * Avoid other nick collisions...
- * This is a doubtfull test though, what else would it be
- * when it has a server.name ?
- */
- else if (!IsServer(acptr) && !IsHandshake(acptr))
- return exit_client_msg(cptr, cptr, &me,
- "Nickname %s already exists!", host);
- /*
- * Our new server might be a juped server,
- * or someone trying abuse a second Uworld:
- */
- else if (IsServer(acptr) && (0 == ircd_strncmp(acptr->info, "JUPE", 4) ||
- find_conf_byhost(cptr->confs, acptr->name, CONF_UWORLD)))
- {
- if (!IsServer(sptr))
- return exit_client(cptr, sptr, &me, acptr->info);
- sendto_one(cptr, ":%s WALLOPS :Received :%s SERVER %s from %s !?!", /* XXX DEAD */
- me.name, parv[0], parv[1], cptr->name);
- return exit_new_server(cptr, sptr, host, timestamp, "%s", acptr->info);
- }
- /*
- * Of course we find the handshake this link was before :)
- */
- else if (IsHandshake(acptr) && acptr == cptr)
- break;
- /*
- * Here we have a server nick collision...
- * We don't want to kill the link that was last /connected,
- * but we neither want to kill a good (old) link.
- * Therefor we kill the second youngest link.
- */
- if (1)
- {
- struct Client* c2ptr = 0;
- struct Client* c3ptr = acptr;
- struct Client* ac2ptr;
- struct Client* ac3ptr;
-
- /* Search youngest link: */
- for (ac3ptr = acptr; ac3ptr != &me; ac3ptr = ac3ptr->serv->up)
- if (ac3ptr->serv->timestamp > c3ptr->serv->timestamp)
- c3ptr = ac3ptr;
- if (IsServer(sptr))
- {
- for (ac3ptr = sptr; ac3ptr != &me; ac3ptr = ac3ptr->serv->up)
- if (ac3ptr->serv->timestamp > c3ptr->serv->timestamp)
- c3ptr = ac3ptr;
- }
- if (timestamp > c3ptr->serv->timestamp)
- {
- c3ptr = 0;
- c2ptr = acptr; /* Make sure they differ */
- }
- /* Search second youngest link: */
- for (ac2ptr = acptr; ac2ptr != &me; ac2ptr = ac2ptr->serv->up)
- if (ac2ptr != c3ptr &&
- ac2ptr->serv->timestamp >
- (c2ptr ? c2ptr->serv->timestamp : timestamp))
- c2ptr = ac2ptr;
- if (IsServer(sptr))
- {
- for (ac2ptr = sptr; ac2ptr != &me; ac2ptr = ac2ptr->serv->up)
- if (ac2ptr != c3ptr &&
- ac2ptr->serv->timestamp >
- (c2ptr ? c2ptr->serv->timestamp : timestamp))
- c2ptr = ac2ptr;
- }
- if (c3ptr && timestamp > (c2ptr ? c2ptr->serv->timestamp : timestamp))
- c2ptr = 0;
- /* If timestamps are equal, decide which link to break
- * by name.
- */
- if ((c2ptr ? c2ptr->serv->timestamp : timestamp) ==
- (c3ptr ? c3ptr->serv->timestamp : timestamp))
- {
- char* n2;
- char* n2up;
- char* n3;
- char* n3up;
- if (c2ptr)
- {
- n2 = c2ptr->name;
- n2up = MyConnect(c2ptr) ? me.name : c2ptr->serv->up->name;
- }
- else
- {
- n2 = host;
- n2up = IsServer(sptr) ? sptr->name : me.name;
- }
- if (c3ptr)
- {
- n3 = c3ptr->name;
- n3up = MyConnect(c3ptr) ? me.name : c3ptr->serv->up->name;
- }
- else
- {
- n3 = host;
- n3up = IsServer(sptr) ? sptr->name : me.name;
- }
- if (strcmp(n2, n2up) > 0)
- n2 = n2up;
- if (strcmp(n3, n3up) > 0)
- n3 = n3up;
- if (strcmp(n3, n2) > 0)
- {
- ac2ptr = c2ptr;
- c2ptr = c3ptr;
- c3ptr = ac2ptr;
- }
- }
- /* Now squit the second youngest link: */
- if (!c2ptr)
- return exit_new_server(cptr, sptr, host, timestamp,
- "server %s already exists and is %ld seconds younger.",
- host, (long)acptr->serv->timestamp - (long)timestamp);
- else if (c2ptr->from == cptr || IsServer(sptr))
- {
- struct Client *killedptrfrom = c2ptr->from;
- if (active_lh_line)
- {
- /*
- * If the L: or H: line also gets rid of this link,
- * we sent just one squit.
- */
- if (LHcptr && a_kills_b_too(LHcptr, c2ptr))
- break;
- /*
- * If breaking the loop here solves the L: or H:
- * line problem, we don't squit that.
- */
- if (c2ptr->from == cptr || (LHcptr && a_kills_b_too(c2ptr, LHcptr)))
- active_lh_line = 0;
- else
- {
- /*
- * If we still have a L: or H: line problem,
- * we prefer to squit the new server, solving
- * loop and L:/H: line problem with only one squit.
- */
- LHcptr = 0;
- break;
- }
- }
- /*
- * If the new server was introduced by a server that caused a
- * Ghost less then 20 seconds ago, this is probably also
- * a Ghost... (20 seconds is more then enough because all
- * SERVER messages are at the beginning of a net.burst). --Run
- */
- if (CurrentTime - cptr->serv->ghost < 20)
- {
- killedptrfrom = acptr->from;
- if (exit_client(cptr, acptr, &me, "Ghost loop") == CPTR_KILLED)
- return CPTR_KILLED;
- }
- else if (exit_client_msg(cptr, c2ptr, &me,
- "Loop <-- %s (new link is %ld seconds younger)", host,
- (c3ptr ? (long)c3ptr->serv->timestamp : timestamp) -
- (long)c2ptr->serv->timestamp) == CPTR_KILLED)
- return CPTR_KILLED;
- /*
- * Did we kill the incoming server off already ?
- */
- if (killedptrfrom == cptr)
- return 0;
- }
- else
- {
- if (active_lh_line)
- {
- if (LHcptr && a_kills_b_too(LHcptr, acptr))
- break;
- if (acptr->from == cptr || (LHcptr && a_kills_b_too(acptr, LHcptr)))
- active_lh_line = 0;
- else
- {
- LHcptr = 0;
- break;
- }
- }
- /*
- * We can't believe it is a lagged server message
- * when it directly connects to us...
- * kill the older link at the ghost, rather then
- * at the second youngest link, assuming it isn't
- * a REAL loop.
- */
- ghost = CurrentTime; /* Mark that it caused a ghost */
- if (exit_client(cptr, acptr, &me, "Ghost") == CPTR_KILLED)
- return CPTR_KILLED;
- break;
- }
- }
- }
-
- if (active_lh_line)
- {
- if (LHcptr == 0) {
- return exit_new_server(cptr, sptr, host, timestamp,
- (active_lh_line == 2) ? "Non-Hub link %s <- %s(%s)" : "Leaf-only link %s <- %s(%s)",
- cptr->name, host,
- lhconf ? (lhconf->name ? lhconf->name : "*") : "!");
- }
- else
- {
- int killed = a_kills_b_too(LHcptr, sptr);
- if (active_lh_line < 3)
- {
- if (exit_client_msg(cptr, LHcptr, &me,
- (active_lh_line == 2) ? "Non-Hub link %s <- %s(%s)" : "Leaf-only link %s <- %s(%s)",
- cptr->name, host,
- lhconf ? (lhconf->name ? lhconf->name : "*") : "!") == CPTR_KILLED)
- return CPTR_KILLED;
- }
- else
- {
- ServerStats->is_ref++;
- if (exit_client(cptr, LHcptr, &me, "I'm a leaf") == CPTR_KILLED)
- return CPTR_KILLED;
- }
- /*
- * Did we kill the incoming server off already ?
- */
- if (killed)
- return 0;
- }
- }
-
- if (IsServer(cptr))
- {
- /*
- * 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...
- */
-
- acptr = make_client(cptr, STAT_SERVER);
- make_server(acptr);
- acptr->serv->prot = prot;
- acptr->serv->timestamp = timestamp;
- acptr->hopcount = hop;
- ircd_strncpy(acptr->name, host, HOSTLEN);
- ircd_strncpy(acptr->info, info, REALLEN);
- acptr->serv->up = sptr;
- acptr->serv->updown = add_dlink(&sptr->serv->down, acptr);
- /* Use cptr, because we do protocol 9 -> 10 translation
- for numeric nicks ! */
- SetServerYXX(cptr, acptr, parv[6]);
-
- Count_newremoteserver(UserStats);
- if (Protocol(acptr) < 10)
- acptr->flags |= FLAGS_TS8;
- add_client_to_list(acptr);
- hAddClient(acptr);
- if (*parv[5] == 'J')
- {
- SetBurst(acptr);
- sendto_op_mask(SNO_NETWORK, "Net junction: %s %s", /* XXX DEAD */
- sptr->name, acptr->name);
- SetJunction(acptr);
- }
- /*
- * Old sendto_serv_but_one() call removed because we now need to send
- * different names to different servers (domain name matching).
- */
- for (i = 0; i <= HighestFd; i++)
- {
- if (!(bcptr = LocalClientArray[i]) || !IsServer(bcptr) ||
- bcptr == cptr || IsMe(bcptr))
- continue;
- if (0 == match(me.name, acptr->name))
- continue;
- sendto_one(bcptr, "%s " TOK_SERVER " %s %d 0 %s %s %s%s 0 :%s", /* XXX DEAD */
- NumServ(sptr), acptr->name, hop + 1, parv[4], parv[5],
- NumServCap(acptr), acptr->info);
- }
- return 0;
- }
-
- if (IsUnknown(cptr) || IsHandshake(cptr))
- {
- make_server(cptr);
- cptr->serv->timestamp = timestamp;
- cptr->serv->prot = prot;
- cptr->serv->ghost = ghost;
- SetServerYXX(cptr, cptr, parv[6]);
- if (start_timestamp > OLDEST_TS)
- {
-#ifndef RELIABLE_CLOCK
-#ifdef TESTNET
- sendto_ops("Debug: my start time: " TIME_T_FMT " ; others start time: " /* XXX DEAD */
- TIME_T_FMT, me.serv->timestamp, start_timestamp);
- sendto_ops("Debug: receive time: " TIME_T_FMT " ; received timestamp: " /* XXX DEAD */
- TIME_T_FMT " ; difference %ld",
- recv_time, timestamp, timestamp - recv_time);
-#endif
- if (start_timestamp < me.serv->timestamp)
- {
- sendto_ops("got earlier start time: " TIME_T_FMT " < " TIME_T_FMT, /* XXX DEAD */
- start_timestamp, me.serv->timestamp);
- me.serv->timestamp = start_timestamp;
- TSoffset += timestamp - recv_time;
- sendto_ops("clock adjusted by adding %d", (int)(timestamp - recv_time)); /* XXX DEAD */
- }
- else if ((start_timestamp > me.serv->timestamp) && IsUnknown(cptr))
- cptr->serv->timestamp = TStime();
-
- else if (timestamp != recv_time)
- {
- /*
- * Equal start times, we have a collision. Let the connected-to server
- * decide. This assumes leafs issue more than half of the connection
- * attempts.
- */
- if (IsUnknown(cptr))
- cptr->serv->timestamp = TStime();
- else if (IsHandshake(cptr))
- {
- sendto_ops("clock adjusted by adding %d", /* XXX DEAD */
- (int)(timestamp - recv_time));
- TSoffset += timestamp - recv_time;
- }
- }
-#else /* RELIABLE CLOCK IS TRUE, we _always_ use our own clock */
- if (start_timestamp < me.serv->timestamp)
- me.serv->timestamp = start_timestamp;
- if (IsUnknown(cptr))
- cptr->serv->timestamp = TStime();
-#endif
- }
-
- ret = server_estab(cptr, aconf); /* XXX DEAD */
- }
- else
- ret = 0;
-#ifdef RELIABLE_CLOCK
- if (abs(cptr->serv->timestamp - recv_time) > 30)
- {
- sendto_ops("Connected to a net with a timestamp-clock" /* XXX DEAD */
- " difference of " STIME_T_FMT " seconds! Used SETTIME to correct"
- " this.", timestamp - recv_time);
- sendto_one(cptr, ":%s SETTIME " TIME_T_FMT " :%s", /* XXX DEAD */
- me.name, TStime(), me.name);
- }
-#endif
-
- return ret;
-}
-#endif /* 0 */
-
projects / ircu2.10.12-pk.git / blobdiff