X-Git-Url: http://git.pk910.de/?p=ircu2.10.12-pk.git;a=blobdiff_plain;f=ircd%2Fm_trace.c;fp=ircd%2Fm_trace.c;h=a0ba9757eef3ef0aa0247edb97bc8664741cfd1b;hp=0000000000000000000000000000000000000000;hb=0400a5a6479398d82526785c18c0df8bc8b92dce;hpb=d17e10da972ce5776c60b4c317267c6abe0e1ead diff --git a/ircd/m_trace.c b/ircd/m_trace.c new file mode 100644 index 0000000..a0ba975 --- /dev/null +++ b/ircd/m_trace.c @@ -0,0 +1,344 @@ +/* + * IRC - Internet Relay Chat, ircd/m_trace.c + * Copyright (C) 1990 Jarkko Oikarinen and + * University of Oulu, Computing Center + * + * See file AUTHORS in IRC package for additional names of + * the programmers. + * + * 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * $Id$ + */ + +/* + * m_functions execute protocol messages on this server: + * + * cptr is always NON-NULL, pointing to a *LOCAL* client + * structure (with an open socket connected!). This + * identifies the physical socket where the message + * originated (or which caused the m_function to be + * executed--some m_functions may call others...). + * + * sptr is the source of the message, defined by the + * prefix part of the message if present. If not + * or prefix not found, then sptr==cptr. + * + * (!IsServer(cptr)) => (cptr == sptr), because + * prefixes are taken *only* from servers... + * + * (IsServer(cptr)) + * (sptr == cptr) => the message didn't + * have the prefix. + * + * (sptr != cptr && IsServer(sptr) means + * the prefix specified servername. (?) + * + * (sptr != cptr && !IsServer(sptr) means + * that message originated from a remote + * user (not local). + * + * combining + * + * (!IsServer(sptr)) means that, sptr can safely + * taken as defining the target structure of the + * message in this server. + * + * *Always* true (if 'parse' and others are working correct): + * + * 1) sptr->from == cptr (note: cptr->from == cptr) + * + * 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr + * *cannot* be a local connection, unless it's + * actually cptr!). [MyConnect(x) should probably + * be defined as (x == x->from) --msa ] + * + * parc number of variable parameter strings (if zero, + * parv is allowed to be NULL) + * + * parv a NULL terminated list of parameter pointers, + * + * parv[0], sender (prefix string), if not present + * this points to an empty string. + * parv[1]...parv[parc-1] + * pointers to additional parameters + * parv[parc] == NULL, *always* + * + * note: it is guaranteed that parv[0]..parv[parc-1] are all + * non-NULL pointers. + */ +#include "config.h" + +#include "class.h" +#include "client.h" +#include "hash.h" +#include "ircd.h" +#include "ircd_features.h" +#include "ircd_log.h" +#include "ircd_reply.h" +#include "ircd_string.h" +#include "match.h" +#include "msg.h" +#include "numeric.h" +#include "numnicks.h" +#include "s_bsd.h" +#include "s_conf.h" +#include "s_user.h" +#include "send.h" +#include "version.h" + +/* #include -- Now using assert in ircd_log.h */ +#include + +void do_trace(struct Client *cptr, struct Client *sptr, int parc, char *parv[]) +{ + int i; + struct Client *acptr; + struct Client *acptr2; + const struct ConnectionClass* cl; + char* tname; + int doall; + int link_s[MAXCONNECTIONS]; + int link_u[MAXCONNECTIONS]; + int cnt = 0; + int wilds; + int dow; + + if (parc < 2 || BadPtr(parv[1])) + { + /* just "TRACE" without parameters. Must be from local client */ + parc = 1; + acptr = &me; + tname = cli_name(&me); + i = HUNTED_ISME; + } + else if (parc < 3 || BadPtr(parv[2])) + { + /* No target specified. Make one before propagating. */ + parc = 2; + tname = parv[1]; + if ((acptr = find_match_server(parv[1])) || + ((acptr = FindClient(parv[1])) && !MyUser(acptr))) + { + if (IsUser(acptr)) + parv[2] = cli_name(cli_user(acptr)->server); + else + parv[2] = cli_name(acptr); + parc = 3; + parv[3] = 0; + if ((i = hunt_server_cmd(sptr, CMD_TRACE, cptr, IsServer(acptr), + "%s :%C", 2, parc, parv)) == HUNTED_NOSUCH) + return; + } + else + i = HUNTED_ISME; + } else { + /* Got "TRACE :" */ + parc = 3; + if (MyUser(sptr) || Protocol(cptr) < 10) + acptr = find_match_server(parv[2]); + else + acptr = FindNServer(parv[2]); + if ((i = hunt_server_cmd(sptr, CMD_TRACE, cptr, 0, "%s :%C", 2, parc, + parv)) == HUNTED_NOSUCH) + return; + tname = parv[1]; + } + + if (i == HUNTED_PASS) { + if (!acptr) + acptr = next_client(GlobalClientList, tname); + else + acptr = cli_from(acptr); + send_reply(sptr, RPL_TRACELINK, + version, debugmode, tname, + acptr ? cli_name(cli_from(acptr)) : ""); + return; + } + + doall = (parv[1] && (parc > 1)) ? !match(tname, cli_name(&me)) : 1; + wilds = !parv[1] || strchr(tname, '*') || strchr(tname, '?'); + dow = wilds || doall; + + /* Don't give (long) remote listings to lusers */ + if (dow && !MyConnect(sptr) && !IsAnOper(sptr)) { + send_reply(sptr, RPL_TRACEEND); + return; + } + + for (i = 0; i < MAXCONNECTIONS; i++) + link_s[i] = 0, link_u[i] = 0; + + if (doall) { + for (acptr = GlobalClientList; acptr; acptr = cli_next(acptr)) { + if (IsUser(acptr)) + link_u[cli_fd(cli_from(acptr))]++; + else if (IsServer(acptr)) + link_s[cli_fd(cli_from(acptr))]++; + } + } + + /* report all direct connections */ + + for (i = 0; i <= HighestFd; i++) { + const char *conClass; + + if (!(acptr = LocalClientArray[i])) /* Local Connection? */ + continue; + if (IsInvisible(acptr) && dow && !(MyConnect(sptr) && IsOper(sptr)) && + !IsAnOper(acptr) && (acptr != sptr)) + continue; + if (!doall && wilds && match(tname, cli_name(acptr))) + continue; + if (!dow && 0 != ircd_strcmp(tname, cli_name(acptr))) + continue; + + conClass = get_client_class(acptr); + + switch (cli_status(acptr)) { + case STAT_CONNECTING: + send_reply(sptr, RPL_TRACECONNECTING, conClass, cli_name(acptr)); + cnt++; + break; + case STAT_HANDSHAKE: + send_reply(sptr, RPL_TRACEHANDSHAKE, conClass, cli_name(acptr)); + cnt++; + break; + case STAT_ME: + break; + case STAT_UNKNOWN: + case STAT_UNKNOWN_USER: + send_reply(sptr, RPL_TRACEUNKNOWN, conClass, + get_client_name(acptr, HIDE_IP)); + cnt++; + break; + case STAT_UNKNOWN_SERVER: + send_reply(sptr, RPL_TRACEUNKNOWN, conClass, "Unknown Server"); + cnt++; + break; + case STAT_USER: + /* Only opers see users if there is a wildcard + but anyone can see all the opers. */ + if ((IsAnOper(sptr) && (MyUser(sptr) || + !(dow && IsInvisible(acptr)))) || !dow || IsAnOper(acptr)) { + if (IsAnOper(acptr)) + send_reply(sptr, RPL_TRACEOPERATOR, conClass, + get_client_name(acptr, SHOW_IP), + CurrentTime - cli_lasttime(acptr)); + else + send_reply(sptr, RPL_TRACEUSER, conClass, + get_client_name(acptr, SHOW_IP), + CurrentTime - cli_lasttime(acptr)); + cnt++; + } + break; + /* + * Connection is a server + * + * Serv + * + * class Class the server is in + * nS Number of servers reached via this link + * nC Number of clients reached via this link + * name Name of the server linked + * ConnBy Who established this link + * last Seconds since we got something from this link + * age Seconds this link has been alive + * + * Additional comments etc...... -Cym- + */ + + case STAT_SERVER: + if (cli_serv(acptr)->user) { + if (!cli_serv(acptr)->by[0] + || !(acptr2 = findNUser(cli_serv(acptr)->by)) + || (cli_user(acptr2) != cli_serv(acptr)->user)) + acptr2 = NULL; + send_reply(sptr, RPL_TRACESERVER, conClass, link_s[i], + link_u[i], cli_name(acptr), + acptr2 ? cli_name(acptr2) : "*", + cli_serv(acptr)->user->username, + cli_serv(acptr)->user->host, + CurrentTime - cli_lasttime(acptr), + CurrentTime - cli_serv(acptr)->timestamp); + } else + send_reply(sptr, RPL_TRACESERVER, conClass, link_s[i], + link_u[i], cli_name(acptr), + (*(cli_serv(acptr))->by) ? cli_serv(acptr)->by : "*", "*", + cli_name(&me), CurrentTime - cli_lasttime(acptr), + CurrentTime - cli_serv(acptr)->timestamp); + cnt++; + break; + default: /* We actually shouldn't come here, -msa */ + send_reply(sptr, RPL_TRACENEWTYPE, get_client_name(acptr, HIDE_IP)); + cnt++; + break; + } + } + /* + * Add these lines to summarize the above which can get rather long + * and messy when done remotely - Avalon + */ + if (IsAnOper(sptr) && doall) { + for (cl = get_class_list(); cl; cl = cl->next) { + if (Links(cl) > 1) + send_reply(sptr, RPL_TRACECLASS, ConClass(cl), Links(cl) - 1); + } + } + send_reply(sptr, RPL_TRACEEND); +} + +/* + * m_trace - generic message handler + * + * parv[0] = sender prefix + * parv[1] = nick or servername + * parv[2] = 'target' servername + */ +int m_trace(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) +{ + if (feature_bool(FEAT_HIS_TRACE)) + return send_reply(cptr, ERR_NOPRIVILEGES); + do_trace(cptr, sptr, parc, parv); + return 0; +} + +/* + * ms_trace - server message handler + * + * parv[0] = sender prefix + * parv[1] = nick or servername + * parv[2] = 'target' servername + */ +int ms_trace(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) +{ + do_trace(cptr, sptr, parc, parv); + return 0; +} + +/* + * mo_trace - oper message handler + * + * parv[0] = sender prefix + * parv[1] = nick or servername + * parv[2] = 'target' servername + */ +int mo_trace(struct Client* cptr, struct Client* sptr, int parc, char* parv[]) +{ + if (feature_bool(FEAT_HIS_TRACE) && !IsAnOper(sptr)) + return send_reply(cptr, ERR_NOPRIVILEGES); + do_trace(cptr, sptr, parc, parv); + return 0; +}