Merge branch 'u2_10_12_branch' of git://git.code.sf.net/p/undernet-ircu/ircu2

[ircu2.10.12-pk.git] / ircd / m_pseudo.c

diff --git a/ircd/m_pseudo.c b/ircd/m_pseudo.c
new file mode 100644 (file)
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+++ b/ircd/m_pseudo.c
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+/*
+ * IRC - Internet Relay Chat, ircd/m_pseudo.c
+ * Copyright (C) 2002 - 2003 Zoot <zoot@gamesurge.net>
+ *
+ * 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], pointer to "extra" data (service mapping)
+ *                    parv[2]...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_relay.h"
+#include "ircd_reply.h"
+#include "ircd_string.h"
+#include "ircd_snprintf.h"
+#include "msg.h"
+#include "numeric.h"
+#include "numnicks.h"
+#include "s_conf.h"
+#include "s_user.h"
+
+/* #include <assert.h> -- Now using assert in ircd_log.h */
+
+/*
+ * m_pseudo - generic service message handler
+ *
+ * parv[0] = sender prefix
+ * parv[1] = service mapping (s_map * disguised as char *)
+ * parv[2] = message
+ */
+int m_pseudo(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
+{
+  char *text, buffer[BUFSIZE];
+  struct s_map *map;
+  struct nick_host *nh;
+
+  assert(0 != cptr);
+  assert(cptr == sptr);
+  assert(0 != cli_user(sptr));
+
+  /* By default, relay the message straight through. */
+  text = parv[parc - 1];
+
+  if (parc < 3 || EmptyString(text))
+    return send_reply(sptr, ERR_NOTEXTTOSEND);
+
+  /* HACK! HACK! HACK! HACK! Yes. It's icky, but
+   * it's the only way. */
+  map = (struct s_map *)parv[1];
+  assert(0 != map);
+
+  if (map->prepend) {
+    ircd_snprintf(0, buffer, sizeof(buffer) - 1, "%s%s", map->prepend, text);
+    buffer[sizeof(buffer) - 1] = 0;
+    text = buffer;
+  }
+
+  for (nh = map->services; nh; nh = nh->next) {
+    struct Client *target, *server;
+
+    if (NULL == (server = FindServer(nh->nick + nh->nicklen + 1)))
+      continue;
+    nh->nick[nh->nicklen] = '\0';
+    if ((NULL == (target = FindUser(nh->nick)))
+        || (server != cli_user(target)->server))
+      continue;
+    nh->nick[nh->nicklen] = '@';
+    relay_directed_message(sptr, nh->nick, nh->nick + nh->nicklen, text);
+    return 0;
+  }
+
+  return send_reply(sptr, ERR_SERVICESDOWN, map->name);
+}