X-Git-Url: http://git.pk910.de/?p=ircu2.10.12-pk.git;a=blobdiff_plain;f=ircd%2Fm_kill.c;fp=ircd%2Fm_kill.c;h=b038bc884d496e770eec2c25badfadc3e967a2ea;hp=0000000000000000000000000000000000000000;hb=0400a5a6479398d82526785c18c0df8bc8b92dce;hpb=d17e10da972ce5776c60b4c317267c6abe0e1ead

diff --git a/ircd/m_kill.c b/ircd/m_kill.c
new file mode 100644
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--- /dev/null
+++ b/ircd/m_kill.c
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+/*
+ * IRC - Internet Relay Chat, ircd/m_kill.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 "msg.h"
+#include "numeric.h"
+#include "numnicks.h"
+#include "s_misc.h"
+#include "send.h"
+#include "whowas.h"
+
+/* #include <assert.h> -- Now using assert in ircd_log.h */
+#include <string.h>
+
+/*
+ * do_kill - Performs the generic work involved in killing a client
+ *
+ */
+static int do_kill(struct Client* cptr, struct Client* sptr,
+		   struct Client* victim, char* inpath, char* path, char* msg)
+{
+  assert(0 != cptr);
+  assert(0 != sptr);
+  assert(!IsServer(victim));
+
+  /*
+   * Notify all *local* opers about the KILL (this includes the one
+   * originating the kill, if from this server--the special numeric
+   * reply message is not generated anymore).
+   *
+   * Note: "victim->name" is used instead of "user" because we may
+   *       have changed the target because of the nickname change.
+   */
+  sendto_opmask_butone(0, IsServer(sptr) ? SNO_SERVKILL : SNO_OPERKILL,
+                       "Received KILL message for %s from %s Path: %s!%s %s",
+                       get_client_name(victim, SHOW_IP), cli_name(sptr),
+                       inpath, path, msg);
+  log_write_kill(victim, sptr, inpath, path, msg);
+
+  /*
+   * And pass on the message to other servers. Note, that if KILL
+   * was changed, the message has to be sent to all links, also
+   * back.
+   * Client suicide kills are NOT passed on --SRB
+   */
+  if (IsServer(cptr) || !MyConnect(victim)) {
+    sendcmdto_serv_butone(sptr, CMD_KILL, cptr, "%C :%s!%s %s", victim,
+                          inpath, path, msg);
+
+    /*
+     * Set FLAG_KILLED. This prevents exit_one_client from sending
+     * the unnecessary QUIT for this. (This flag should never be
+     * set in any other place)
+     */
+    SetFlag(victim, FLAG_KILLED);
+  }
+
+  /*
+   * Tell the victim she/he has been zapped, but *only* if
+   * the victim is on current server--no sense in sending the
+   * notification chasing the above kill, it won't get far
+   * anyway (as this user don't exist there any more either)
+   * In accordance with the new hiding rules, the victim
+   * always sees the kill as coming from me.
+   */
+  if (MyConnect(victim))
+    sendcmdto_one(feature_bool(FEAT_HIS_KILLWHO) ? &his : sptr, CMD_KILL,
+		  victim, "%C :%s %s", victim, feature_bool(FEAT_HIS_KILLWHO)
+		  ? feature_str(FEAT_HIS_SERVERNAME) : cli_name(sptr), msg);
+  return exit_client_msg(cptr, victim, feature_bool(FEAT_HIS_KILLWHO)
+			 ? &me : sptr, "Killed (%s %s)",
+			 feature_bool(FEAT_HIS_KILLWHO) ?
+			 feature_str(FEAT_HIS_SERVERNAME) : cli_name(sptr),
+			 msg);
+}
+
+/*
+ * ms_kill - server message handler
+ *
+ * NOTE: IsServer(cptr) == true;
+ *
+ * parv[0]      = sender prefix
+ * parv[1]      = kill victim
+ * parv[parc-1] = kill path
+ */
+int ms_kill(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
+{
+  struct Client* victim;
+  char*          path;
+  char*          msg;
+
+  assert(0 != cptr);
+  assert(0 != sptr);
+  assert(IsServer(cptr));
+
+  /*
+   * XXX - a server sending less than 3 params could really desync
+   * things
+   */
+  if (parc < 3) {
+    protocol_violation(sptr,"Too few arguments for KILL");
+    return need_more_params(sptr, "KILL");
+  }
+
+  path = parv[parc - 1];        /* Either defined or NULL (parc >= 3) */
+
+  if (!(msg = strchr(path, ' '))) /* Extract out the message */
+    msg = "(No reason supplied)";
+  else
+    *(msg++) = '\0'; /* Remove first character (space) and terminate path */
+
+  if (!(victim = findNUser(parv[1]))) {
+    if (IsUser(sptr))
+      sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :KILL target disconnected "
+		    "before I got him :(", sptr);
+    return 0;
+  }
+
+  /*
+   * We *can* have crossed a NICK with this numeric... --Run
+   *
+   * Note the following situation:
+   *  KILL SAA -->       X
+   *  <-- S NICK ... SAA | <-- SAA QUIT <-- S NICK ... SAA <-- SQUIT S
+   * Where the KILL reaches point X before the QUIT does.
+   * This would then *still* cause an orphan because the KILL doesn't reach S
+   * (because of the SQUIT), the QUIT is ignored (because of the KILL)
+   * and the second NICK ... SAA causes an orphan on the server at the
+   * right (which then isn't removed when the SQUIT arrives).
+   * Therefore we still need to detect numeric nick collisions too.
+   *
+   * Bounce the kill back to the originator, if the client can't be found
+   * by the next hop (short lag) the bounce won't propagate further.
+   */
+  if (MyConnect(victim)) {
+    sendcmdto_one(&me, CMD_KILL, cptr, "%C :%s (Ghost 5 Numeric Collided)",
+                  victim, path);
+  }
+  return do_kill(cptr, sptr, victim, cli_name(cptr), path, msg);
+}
+
+/*
+ * mo_kill - oper message handler
+ *
+ * NOTE: IsPrivileged(sptr), IsAnOper(sptr) == true
+ *       IsServer(cptr), IsServer(sptr) == false
+ *
+ * parv[0]      = sender prefix
+ * parv[1]      = kill victim
+ * parv[parc-1] = kill path
+ */
+int mo_kill(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
+{
+  struct Client* victim;
+  char*          user;
+  char           msg[TOPICLEN + 3]; /* (, ), and \0 */
+
+  assert(0 != cptr);
+  assert(0 != sptr);
+  /*
+   * oper connection to this server, cptr is always sptr
+   */
+  assert(cptr == sptr);
+  assert(IsAnOper(sptr));
+
+  if (parc < 3 || EmptyString(parv[parc - 1]))
+    return need_more_params(sptr, "KILL");
+
+  user = parv[1];
+  ircd_snprintf(0, msg, sizeof(msg), "(%.*s)", TOPICLEN, parv[parc - 1]);
+
+  if (!(victim = FindClient(user))) {
+    /*
+     * If the user has recently changed nick, we automatically
+     * rewrite the KILL for this new nickname--this keeps
+     * servers in synch when nick change and kill collide
+     */
+    if (!(victim = get_history(user, (long)15)))
+      return send_reply(sptr, ERR_NOSUCHNICK, user);
+
+    sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :Changed KILL %s into %s", sptr,
+		  user, cli_name(victim));
+  }
+  if (!HasPriv(sptr, MyConnect(victim) ? PRIV_LOCAL_KILL : PRIV_KILL))
+    return send_reply(sptr, ERR_NOPRIVILEGES);
+
+  if (IsServer(victim) || IsMe(victim)) {
+    return send_reply(sptr, ERR_CANTKILLSERVER);
+  }
+  /*
+   * if the user is +k, prevent a kill from local user
+   */
+  if (IsChannelService(victim))
+    return send_reply(sptr, ERR_ISCHANSERVICE, "KILL", cli_name(victim));
+
+
+  if (!MyConnect(victim) && !HasPriv(sptr, PRIV_KILL)) {
+    sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :Nick %s isn't on your server",
+		  sptr, cli_name(victim));
+    return 0;
+  }
+  return do_kill(cptr, sptr, victim, cli_user(sptr)->host, cli_name(sptr),
+		 msg);
+}