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

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

diff --git a/ircd/m_whowas.c b/ircd/m_whowas.c
new file mode 100644 (file)
index 0000000..eee2745
--- /dev/null
+++ b/ircd/m_whowas.c
@@ -0,0 +1,164 @@
+/*
+ * IRC - Internet Relay Chat, ircd/m_whowas.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_string.h"
+#include "msg.h"
+#include "numeric.h"
+#include "numnicks.h"
+#include "s_user.h"
+#include "s_misc.h"
+#include "send.h"
+#include "whowas.h"
+
+/* #include <assert.h> -- Now using assert in ircd_log.h */
+#include <stdlib.h>
+
+/*
+ * m_whowas - generic message handler
+ *
+ * parv[0] = sender prefix
+ * parv[1] = nickname queried
+ * parv[2] = maximum returned items (optional, default is unlimited)
+ * parv[3] = remote server target (Opers only, max returned items 20)
+ */
+int m_whowas(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
+{
+  struct Whowas *temp;
+  int cur = 0;
+  int max = -1, found = 0;
+  char *p, *nick, *s;
+
+  if (parc < 2)
+  {
+    send_reply(sptr, ERR_NONICKNAMEGIVEN);
+    return 0;
+  }
+  if (parc > 2)
+    max = atoi(parv[2]);
+  if (parc > 3)
+    if (hunt_server_cmd(sptr, CMD_WHOWAS, cptr, 1, "%s %s :%C", 3, parc, parv))
+      return 0;
+
+  parv[1] = canonize(parv[1]);
+  if (!MyConnect(sptr) && (max > 20))
+    max = 20;                   /* Set max replies at 20 */
+  for (s = parv[1]; (nick = ircd_strtok(&p, s, ",")); s = 0)
+  {
+    /* Search through bucket, finding all nicknames that match */
+    found = 0;
+    for (temp = whowashash[hash_whowas_name(nick)]; temp; temp = temp->hnext)
+    {
+      if (0 == ircd_strcmp(nick, temp->name))
+      {
+       send_reply(sptr, RPL_WHOWASUSER, temp->name, temp->username,
+                  temp->hostname, temp->realname);
+        if (IsAnOper(sptr) && temp->realhost)
+          send_reply(sptr, RPL_WHOISACTUALLY, temp->name, temp->username, temp->realhost, "<untracked>");
+        send_reply(sptr, RPL_WHOISSERVER, temp->name,
+                   (feature_bool(FEAT_HIS_WHOIS_SERVERNAME) && !IsOper(sptr)) ?
+                     feature_str(FEAT_HIS_SERVERNAME) :
+                     temp->servername,
+                  myctime(temp->logoff));
+        if (temp->away)
+         send_reply(sptr, RPL_AWAY, temp->name, temp->away);
+        cur++;
+        found++;
+      }
+      if (max >= 0 && cur >= max)
+        break;
+    }
+    if (!found)
+      send_reply(sptr, ERR_WASNOSUCHNICK, nick);
+    /* To keep parv[1] intact for ENDOFWHOWAS */
+    if (p)
+      p[-1] = ',';
+  }
+  send_reply(sptr, RPL_ENDOFWHOWAS, parv[1]);
+  return 0;
+}