--- /dev/null
+/*
+ * IRC - Internet Relay Chat, ircd/m_settime.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 "client.h"
+#include "hash.h"
+#include "ircd.h"
+#include "ircd_features.h"
+#include "ircd_log.h"
+#include "ircd_reply.h"
+#include "ircd_snprintf.h"
+#include "ircd_string.h"
+#include "list.h"
+#include "msg.h"
+#include "numeric.h"
+#include "numnicks.h"
+#include "s_user.h"
+#include "send.h"
+#include "struct.h"
+
+/* #include <assert.h> -- Now using assert in ircd_log.h */
+#include <stdlib.h>
+
+/*
+ * ms_settime - server message handler
+ *
+ * parv[0] = sender prefix
+ * parv[1] = new time
+ * parv[2] = server name (Only used when sptr is an Oper).
+ */
+int ms_settime(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
+{
+ time_t t;
+ long dt;
+ static char tbuf[11];
+ struct DLink *lp;
+
+ if (parc < 2) /* verify argument count */
+ return need_more_params(sptr, "SETTIME");
+
+ t = atoi(parv[1]); /* convert time and compute delta */
+ dt = TStime() - t;
+
+ /* verify value */
+ if (t < OLDEST_TS || dt < -9000000)
+ {
+ if (IsServer(sptr)) /* protocol violation if it's from a server */
+ protocol_violation(sptr, "SETTIME: Bad value (%Tu, delta %ld)", t, dt);
+ else
+ sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :SETTIME: Bad value (%Tu, "
+ "delta %ld)", sptr, t, dt);
+ sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :SETTIME: Bad value", sptr);
+ return 0;
+ }
+
+ /* reset time... */
+ if (feature_bool(FEAT_RELIABLE_CLOCK))
+ {
+ ircd_snprintf(0, tbuf, sizeof(tbuf), "%Tu", TStime());
+ parv[1] = tbuf;
+ }
+
+ if (BadPtr(parv[2])) /* spam the network */
+ {
+ for (lp = cli_serv(&me)->down; lp; lp = lp->next)
+ if (cptr != lp->value.cptr)
+ sendcmdto_prio_one(sptr, CMD_SETTIME, lp->value.cptr, "%s", parv[1]);
+ }
+ else
+ {
+ if (hunt_server_prio_cmd(sptr, CMD_SETTIME, cptr, 1, "%s %C", 2, parc,
+ parv) != HUNTED_ISME)
+ {
+ /* If the destination was *not* me, but I'm RELIABLE_CLOCK and the
+ * delta is more than 30 seconds off, bounce back a corrected
+ * SETTIME
+ */
+ if (feature_bool(FEAT_RELIABLE_CLOCK) && (dt > 30 || dt < -30))
+ sendcmdto_prio_one(&me, CMD_SETTIME, cptr, "%s %C", parv[1], cptr);
+ return 0;
+ }
+ }
+
+ if (feature_bool(FEAT_RELIABLE_CLOCK))
+ {
+ /* don't apply settime--reliable */
+ if ((dt > 600) || (dt < -600))
+ sendcmdto_serv_butone(&me, CMD_DESYNCH, 0, ":Bad SETTIME from %s: %Tu "
+ "(delta %ld)", cli_name(sptr), t, dt);
+ /* Let user know we're ignoring him */
+ if (IsUser(sptr))
+ {
+ sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :clock is not set %ld "
+ "seconds %s : RELIABLE_CLOCK is defined", sptr,
+ (dt < 0) ? -dt : dt, (dt < 0) ? "forwards" : "backwards");
+ }
+ }
+ else /* tell opers about time change */
+ {
+ sendto_opmask_butone(0, SNO_OLDSNO, "SETTIME from %s, clock is set %ld "
+ "seconds %s", cli_name(sptr), (dt < 0) ? -dt : dt,
+ (dt < 0) ? "forwards" : "backwards");
+ /* Apply time change... */
+ TSoffset -= dt;
+ /* Let the issuing user know what we did... */
+ if (IsUser(sptr))
+ {
+ sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :clock is set %ld seconds %s",
+ sptr, (dt < 0) ? -dt : dt,
+ (dt < 0) ? "forwards" : "backwards");
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * mo_settime - oper message handler
+ *
+ * parv[0] = sender prefix
+ * parv[1] = new time
+ * parv[2] = servername (Only used when sptr is an Oper).
+ */
+int mo_settime(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
+{
+ time_t t;
+ long dt;
+ static char tbuf[11];
+
+ /* Must be a global oper */
+ if (!IsOper(sptr))
+ return send_reply(sptr, ERR_NOPRIVILEGES);
+
+ if (parc < 2) /* verify argument count */
+ return need_more_params(sptr, "SETTIME");
+
+ if (parc == 2 && MyUser(sptr)) /* default to me */
+ parv[parc++] = cli_name(&me);
+
+ t = atoi(parv[1]); /* convert the time */
+
+ /* If we're reliable_clock or if the oper specified a 0 time, use current */
+ if (!t || feature_bool(FEAT_RELIABLE_CLOCK))
+ {
+ t = TStime();
+ ircd_snprintf(0, tbuf, sizeof(tbuf), "%Tu", TStime());
+ parv[1] = tbuf;
+ }
+
+ dt = TStime() - t; /* calculate the delta */
+
+ if (t < OLDEST_TS || dt < -9000000) /* verify value */
+ {
+ sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :SETTIME: Bad value", sptr);
+ return 0;
+ }
+
+ /* OK, send the message off to its destination */
+ if (hunt_server_prio_cmd(sptr, CMD_SETTIME, cptr, 1, "%s %C", 2, parc,
+ parv) != HUNTED_ISME)
+ return 0;
+
+ if (feature_bool(FEAT_RELIABLE_CLOCK)) /* don't apply settime--reliable */
+ {
+ if ((dt > 600) || (dt < -600))
+ sendcmdto_serv_butone(&me, CMD_DESYNCH, 0, ":Bad SETTIME from %s: %Tu "
+ "(delta %ld)", cli_name(sptr), t, dt);
+ if (IsUser(sptr)) /* Let user know we're ignoring him */
+ sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :clock is not set %ld seconds "
+ "%s: RELIABLE_CLOCK is defined", sptr, (dt < 0) ? -dt : dt,
+ (dt < 0) ? "forwards" : "backwards");
+ }
+ else /* tell opers about time change */
+ {
+ sendto_opmask_butone(0, SNO_OLDSNO, "SETTIME from %s, clock is set %ld "
+ "seconds %s", cli_name(sptr), (dt < 0) ? -dt : dt,
+ (dt < 0) ? "forwards" : "backwards");
+ TSoffset -= dt; /* apply time change */
+ if (IsUser(sptr)) /* let user know what we did */
+ sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :clock is set %ld seconds %s",
+ sptr, (dt < 0) ? -dt : dt,
+ (dt < 0) ? "forwards" : "backwards");
+ }
+
+ return 0;
+}
projects / ircu2.10.12-pk.git / blobdiff