/*
* IRC - Internet Relay Chat, ircd/m_gline.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_gline.c 796 2004-09-08 22:47:14Z r33d $
*/
/*
* 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 "gline.h"
#include "hash.h"
#include "ircd.h"
#include "ircd_features.h"
#include "ircd_reply.h"
#include "ircd_string.h"
#include "match.h"
#include "msg.h"
#include "numeric.h"
#include "numnicks.h"
#include "s_conf.h"
#include "s_misc.h"
#include "send.h"
#include "support.h"
#include <stdlib.h>
#include <string.h>
/*
* ms_gline - server message handler
*
* parv[0] = Sender prefix
* parv[1] = Target: server numeric
* parv[2] = (+|-)<G-line mask>
* parv[3] = G-line lifetime
*
* From Uworld:
*
* parv[4] = Comment
*
* From somewhere else:
*
* parv[4] = Last modification time
* parv[5] = Comment
*
*/
int
ms_gline(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
{
struct Client *acptr = 0;
struct Gline *agline;
unsigned int flags = 0;
time_t expire_off, lastmod = 0;
char *mask = parv[2], *target = parv[1], *reason = "No reason";
if (*mask == '!') {
mask++;
flags |= GLINE_OPERFORCE; /* assume oper had WIDE_GLINE */
}
if ((parc == 3 && *mask == '-') || parc == 5) {
if (!find_conf_byhost(cli_confs(cptr), cli_name(sptr), CONF_UWORLD))
return need_more_params(sptr, "GLINE");
if (parc > 4)
reason = parv[4];
flags |= GLINE_FORCE;
} else if (parc > 5) {
lastmod = atoi(parv[4]);
reason = parv[5];
} else
return need_more_params(sptr, "GLINE");
if (IsServer(sptr))
flags |= GLINE_FORCE;
if (!(target[0] == '*' && target[1] == '\0')) {
if (!(acptr = FindNServer(target)))
return 0; /* no such server */
if (!IsMe(acptr)) { /* manually propagate */
if (!lastmod)
sendcmdto_one(sptr, CMD_GLINE, acptr,
(parc == 3) ? "%C %s" : "%C %s %s :%s", acptr, mask,
parv[3], reason);
else
sendcmdto_one(sptr, CMD_GLINE, acptr, "%C %s%s %s %s :%s", acptr,
flags & GLINE_OPERFORCE ? "!" : "", mask, parv[3],
parv[4], reason);
return 0;
}
flags |= GLINE_LOCAL;
}
if (*mask == '-')
mask++;
else if (*mask == '+') {
flags |= GLINE_ACTIVE;
mask++;
} else
flags |= GLINE_ACTIVE;
expire_off = parc < 5 ? 0 : atoi(parv[3]);
agline = gline_find(mask, GLINE_ANY | GLINE_EXACT);
if (agline) {
if (GlineIsLocal(agline) && !(flags & GLINE_LOCAL)) /* global over local */
gline_free(agline);
else if (!lastmod && ((flags & GLINE_ACTIVE) == GlineIsRemActive(agline)))
return gline_propagate(cptr, sptr, agline);
else if (!lastmod || GlineLastMod(agline) < lastmod) { /* new mod */
if (flags & GLINE_ACTIVE)
return gline_activate(cptr, sptr, agline, lastmod, flags);
else
return gline_deactivate(cptr, sptr, agline, lastmod, flags);
} else if (GlineLastMod(agline) == lastmod || IsBurstOrBurstAck(cptr))
return 0;
else
return gline_resend(cptr, agline); /* other server desynched WRT gline */
} else if (parc == 3 && !(flags & GLINE_ACTIVE)) {
/* U-lined server removing a G-line we don't have; propagate the removal
* anyway.
*/
if (!(flags & GLINE_LOCAL))
sendcmdto_serv_butone(sptr, CMD_GLINE, cptr, "* -%s", mask);
return 0;
} else if (parc < 5)
return need_more_params(sptr, "GLINE");
return gline_add(cptr, sptr, mask, reason, expire_off, lastmod, flags);
}
/*
* mo_gline - oper message handler
*
* parv[0] = Sender prefix
* parv[1] = [[+|-]<G-line mask>]
*
* Local (to me) style:
*
* parv[2] = [Expiration offset]
* parv[3] = [Comment]
*
* Global (or remote local) style:
*
* parv[2] = [target]
* parv[3] = [Expiration offset]
* parv[4] = [Comment]
*
*/
int
mo_gline(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
{
struct Client *acptr = 0;
struct Gline *agline;
unsigned int flags = 0;
time_t expire_off;
char *mask = parv[1], *target = 0, *reason;
if (parc < 2)
return gline_list(sptr, 0);
if (*mask == '!') {
mask++;
if (HasPriv(sptr, PRIV_WIDE_GLINE))
flags |= GLINE_OPERFORCE;
}
if (*mask == '+') {
flags |= GLINE_ACTIVE;
mask++;
} else if (*mask == '-')
mask++;
else
return gline_list(sptr, mask);
if (parc == 4) {
if (is_timestamp(parv[2])) {
expire_off = atoi(parv[2]);
} else {
expire_off = ParseInterval(parv[2]);
}
reason = parv[3];
flags |= GLINE_LOCAL;
} else if (parc > 4) {
target = parv[2];
if (is_timestamp(parv[3])) {
expire_off = atoi(parv[3]);
} else {
expire_off = ParseInterval(parv[3]);
}
reason = parv[4];
} else
return need_more_params(sptr, "GLINE");
if (target) {
if (!(target[0] == '*' && target[1] == '\0')) {
if (!(acptr = find_match_server(target)))
return send_reply(sptr, ERR_NOSUCHSERVER, target);
if (!IsMe(acptr)) { /* manually propagate, since we don't set it */
if (!feature_bool(FEAT_CONFIG_OPERCMDS))
return send_reply(sptr, ERR_DISABLED, "GLINE");
if (!HasPriv(sptr, PRIV_GLINE))
return send_reply(sptr, ERR_NOPRIVILEGES);
sendcmdto_one(sptr, CMD_GLINE, acptr, "%C %s%c%s %s %Tu :%s", acptr,
flags & GLINE_OPERFORCE ? "!" : "",
flags & GLINE_ACTIVE ? '+' : '-', mask, parv[3],
TStime(), reason);
return 0;
}
flags |= GLINE_LOCAL;
}
}
if (!(flags & GLINE_LOCAL) && !feature_bool(FEAT_CONFIG_OPERCMDS))
return send_reply(sptr, ERR_DISABLED, "GLINE");
if (!HasPriv(sptr, (flags & GLINE_LOCAL ? PRIV_LOCAL_GLINE : PRIV_GLINE)))
return send_reply(sptr, ERR_NOPRIVILEGES);
agline = gline_find(mask, GLINE_ANY | GLINE_EXACT);
if (agline) {
if (GlineIsLocal(agline) && !(flags & GLINE_LOCAL)) /* global over local */
gline_free(agline);
else {
if (!GlineLastMod(agline)) /* force mods to Uworld-set G-lines local */
flags |= GLINE_LOCAL;
if (flags & GLINE_ACTIVE)
return gline_activate(cptr, sptr, agline,
GlineLastMod(agline) ? TStime() : 0, flags);
else
return gline_deactivate(cptr, sptr, agline,
GlineLastMod(agline) ? TStime() : 0, flags);
}
}
return gline_add(cptr, sptr, mask, reason, expire_off, TStime(), flags);
}
/*
* m_gline - user message handler
*
* parv[0] = Sender prefix
* parv[1] = [<server name>]
*
*/
int
m_gline(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
{
if (parc < 2)
return send_reply(sptr, ERR_NOSUCHGLINE, "");
if (feature_bool(FEAT_HIS_USERGLINE))
return send_reply(sptr, ERR_DISABLED, "GLINE");
return gline_list(sptr, parv[1]);
}
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