Attempt to revert r11734

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@11735 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 403 insertions, 0 deletions

diff --git a/src/commands/cmd_who.cpp b/src/commands/cmd_who.cpp
new file mode 100644
index 000000000..89ca60d02
--- /dev/null
+++ b/src/commands/cmd_who.cpp
@@ -0,0 +1,403 @@
+/*       +------------------------------------+
+ *       | Inspire Internet Relay Chat Daemon |
+ *       +------------------------------------+
+ *
+ *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
+ *
+ * This program is free but copyrighted software; see
+ *	    the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "inspircd.h"
+
+/** Handle /WHO. These command handlers can be reloaded by the core,
+ * and handle basic RFC1459 commands. Commands within modules work
+ * the same way, however, they can be fully unloaded, where these
+ * may not.
+ */
+class CommandWho : public Command
+{
+	bool CanView(Channel* chan, User* user);
+	bool opt_viewopersonly;
+	bool opt_showrealhost;
+	bool opt_unlimit;
+	bool opt_realname;
+	bool opt_mode;
+	bool opt_ident;
+	bool opt_metadata;
+	bool opt_port;
+	bool opt_away;
+	bool opt_local;
+	bool opt_far;
+	bool opt_time;
+
+ public:
+	/** Constructor for who.
+	 */
+	CommandWho ( Module* parent) : Command(parent,"WHO", 1) { Penalty = 2; syntax = "<server>|<nickname>|<channel>|<realname>|<host>|0 [ohurmMiaplf]"; }
+	void SendWhoLine(User* user, const std::string &initial, Channel* ch, User* u, std::vector<std::string> &whoresults);
+	/** Handle command.
+	 * @param parameters The parameters to the comamnd
+	 * @param pcnt The number of parameters passed to teh command
+	 * @param user The user issuing the command
+	 * @return A value from CmdResult to indicate command success or failure.
+	 */
+	CmdResult Handle(const std::vector<std::string>& parameters, User *user);
+	bool whomatch(User* cuser, User* user, const char* matchtext);
+};
+
+
+static const std::string star = "*";
+
+static const std::string& get_first_visible_channel(User *u)
+{
+	UCListIter i = u->chans.begin();
+	while (i != u->chans.end())
+	{
+		Channel* c = *i++;
+		if (!c->IsModeSet('s'))
+			return c->name;
+	}
+
+	return star;
+}
+
+bool CommandWho::whomatch(User* cuser, User* user, const char* matchtext)
+{
+	bool match = false;
+	bool positive = false;
+
+	if (user->registered != REG_ALL)
+		return false;
+
+	if (opt_local && !IS_LOCAL(user))
+		return false;
+	else if (opt_far && IS_LOCAL(user))
+		return false;
+
+	if (opt_mode)
+	{
+		for (const char* n = matchtext; *n; n++)
+		{
+			if (*n == '+')
+			{
+				positive = true;
+				continue;
+			}
+			else if (*n == '-')
+			{
+				positive = false;
+				continue;
+			}
+			if (user->IsModeSet(*n) != positive)
+				return false;
+		}
+		return true;
+	}
+	else
+	{
+		/*
+		 * This was previously one awesome pile of ugly nested if, when really, it didn't need
+		 * to be, since only one condition was ever checked, a chained if works just fine.
+		 * -- w00t
+		 */
+		if (opt_metadata)
+			match = user->GetExtList().find(matchtext) != user->GetExtList().end();
+		else if (opt_realname)
+			match = InspIRCd::Match(user->fullname, matchtext);
+		else if (opt_showrealhost)
+			match = InspIRCd::Match(user->host, matchtext, ascii_case_insensitive_map);
+		else if (opt_ident)
+			match = InspIRCd::Match(user->ident, matchtext, ascii_case_insensitive_map);
+		else if (opt_port)
+		{
+			irc::portparser portrange(matchtext, false);
+			long portno = -1;
+			while ((portno = portrange.GetToken()))
+				if (portno == user->GetServerPort())
+				{
+					match = true;
+					break;
+				}
+		}
+		else if (opt_away)
+			match = InspIRCd::Match(user->awaymsg, matchtext);
+		else if (opt_time)
+		{
+			long seconds = ServerInstance->Duration(matchtext);
+
+			// Okay, so time matching, we want all users connected `seconds' ago
+			if (user->age >= ServerInstance->Time() - seconds)
+				match = true;
+		}
+
+		/*
+		 * Once the conditionals have been checked, only check dhost/nick/server
+		 * if they didn't match this user -- and only match if we don't find a match.
+		 *
+		 * This should make things minutely faster, and again, less ugly.
+		 * -- w00t
+		 */
+		if (!match)
+			match = InspIRCd::Match(user->dhost, matchtext, ascii_case_insensitive_map);
+
+		if (!match)
+			match = InspIRCd::Match(user->nick, matchtext);
+
+		/* Don't allow server name matches if HideWhoisServer is enabled, unless the command user has the priv */
+		if (!match && (!*ServerInstance->Config->HideWhoisServer || cuser->HasPrivPermission("users/auspex")))
+			match = InspIRCd::Match(user->server, matchtext);
+
+		return match;
+	}
+}
+
+
+
+bool CommandWho::CanView(Channel* chan, User* user)
+{
+	if (!user || !chan)
+		return false;
+
+	/* Bug #383 - moved higher up the list, because if we are in the channel
+	 * we can see all its users
+	 */
+	if (chan->HasUser(user))
+		return true;
+	/* Opers see all */
+	if (user->HasPrivPermission("users/auspex"))
+		return true;
+	/* Cant see inside a +s or a +p channel unless we are a member (see above) */
+	else if (!chan->IsModeSet('s') && !chan->IsModeSet('p'))
+		return true;
+
+	return false;
+}
+
+void CommandWho::SendWhoLine(User* user, const std::string &initial, Channel* ch, User* u, std::vector<std::string> &whoresults)
+{
+	const std::string& lcn = get_first_visible_channel(u);
+	Channel* chlast = ServerInstance->FindChan(lcn);
+
+	std::string wholine =	initial + (ch ? ch->name : lcn) + " " + u->ident + " " + (opt_showrealhost ? u->host : u->dhost) + " " +
+				((*ServerInstance->Config->HideWhoisServer && !user->HasPrivPermission("servers/auspex")) ? ServerInstance->Config->HideWhoisServer : u->server) +
+				" " + u->nick + " ";
+
+	/* away? */
+	if (IS_AWAY(u))
+	{
+		wholine.append("G");
+	}
+	else
+	{
+		wholine.append("H");
+	}
+
+	/* oper? */
+	if (IS_OPER(u))
+	{
+		wholine.append("*");
+	}
+
+	wholine = wholine + (ch ? ch->GetPrefixChar(u) : (chlast ? chlast->GetPrefixChar(u) : "")) + " :0 " + u->fullname;
+
+	FOREACH_MOD(I_OnSendWhoLine, OnSendWhoLine(user, u, ch, wholine));
+
+	if (!wholine.empty())
+		whoresults.push_back(wholine);
+}
+
+CmdResult CommandWho::Handle (const std::vector<std::string>& parameters, User *user)
+{
+	/*
+	 * XXX - RFC says:
+	 *   The <name> passed to WHO is matched against users' host, server, real
+	 *   name and nickname
+	 * Currently, we support WHO #chan, WHO nick, WHO 0, WHO *, and the addition of a 'o' flag, as per RFC.
+	 */
+
+	/* WHO options */
+	opt_viewopersonly = false;
+	opt_showrealhost = false;
+	opt_unlimit = false;
+	opt_realname = false;
+	opt_mode = false;
+	opt_ident = false;
+	opt_metadata = false;
+	opt_port = false;
+	opt_away = false;
+	opt_local = false;
+	opt_far = false;
+	opt_time = false;
+
+	Channel *ch = NULL;
+	std::vector<std::string> whoresults;
+	std::string initial = "352 " + std::string(user->nick) + " ";
+
+	char matchtext[MAXBUF];
+	bool usingwildcards = false;
+
+	/* Change '0' into '*' so the wildcard matcher can grok it */
+	if (parameters[0] == "0")
+		strlcpy(matchtext, "*", MAXBUF);
+	else
+		strlcpy(matchtext, parameters[0].c_str(), MAXBUF);
+
+	for (const char* check = matchtext; *check; check++)
+	{
+		if (*check == '*' || *check == '?')
+		{
+			usingwildcards = true;
+			break;
+		}
+	}
+
+	if (ServerInstance->FindServerName(matchtext))
+		usingwildcards = true;
+
+	if (parameters.size() > 1)
+	{
+		/* Fix for bug #444, WHO flags count as a wildcard */
+		usingwildcards = true;
+
+		for (std::string::const_iterator iter = parameters[1].begin(); iter != parameters[1].end(); ++iter)
+		{
+			switch (*iter)
+			{
+				case 'o':
+					opt_viewopersonly = true;
+					break;
+				case 'h':
+					if (user->HasPrivPermission("users/auspex"))
+						opt_showrealhost = true;
+					break;
+				case 'u':
+					if (user->HasPrivPermission("users/auspex"))
+						opt_unlimit = true;
+					break;
+				case 'r':
+					opt_realname = true;
+					break;
+				case 'm':
+					if (user->HasPrivPermission("users/auspex"))
+						opt_mode = true;
+					break;
+				case 'M':
+					if (user->HasPrivPermission("users/auspex"))
+						opt_metadata = true;
+					break;
+				case 'i':
+					opt_ident = true;
+					break;
+				case 'p':
+					if (user->HasPrivPermission("users/auspex"))
+						opt_port = true;
+					break;
+				case 'a':
+					opt_away = true;
+					break;
+				case 'l':
+					if (user->HasPrivPermission("users/auspex") || !*ServerInstance->Config->HideWhoisServer)
+						opt_local = true;
+					break;
+				case 'f':
+					if (user->HasPrivPermission("users/auspex") || !*ServerInstance->Config->HideWhoisServer)
+						opt_far = true;
+					break;
+				case 't':
+					opt_time = true;
+					break;
+			}
+		}
+	}
+
+
+	/* who on a channel? */
+	ch = ServerInstance->FindChan(matchtext);
+
+	if (ch)
+	{
+		if (CanView(ch,user))
+		{
+			bool inside = ch->HasUser(user);
+
+			/* who on a channel. */
+			const UserMembList *cu = ch->GetUsers();
+
+			for (UserMembCIter i = cu->begin(); i != cu->end(); i++)
+			{
+				/* None of this applies if we WHO ourselves */
+				if (user != i->first)
+				{
+					/* opers only, please */
+					if (opt_viewopersonly && !IS_OPER(i->first))
+						continue;
+
+					/* If we're not inside the channel, hide +i users */
+					if (i->first->IsModeSet('i') && !inside && !user->HasPrivPermission("users/auspex"))
+						continue;
+				}
+
+				SendWhoLine(user, initial, ch, i->first, whoresults);
+			}
+		}
+	}
+	else
+	{
+		/* Match against wildcard of nick, server or host */
+		if (opt_viewopersonly)
+		{
+			/* Showing only opers */
+			for (std::list<User*>::iterator i = ServerInstance->Users->all_opers.begin(); i != ServerInstance->Users->all_opers.end(); i++)
+			{
+				User* oper = *i;
+
+				if (whomatch(user, oper, matchtext))
+				{
+					if (!user->SharesChannelWith(oper))
+					{
+						if (usingwildcards && (!oper->IsModeSet('i')) && (!user->HasPrivPermission("users/auspex")))
+							continue;
+					}
+
+					SendWhoLine(user, initial, NULL, oper, whoresults);
+				}
+			}
+		}
+		else
+		{
+			for (user_hash::iterator i = ServerInstance->Users->clientlist->begin(); i != ServerInstance->Users->clientlist->end(); i++)
+			{
+				if (whomatch(user, i->second, matchtext))
+				{
+					if (!user->SharesChannelWith(i->second))
+					{
+						if (usingwildcards && (i->second->IsModeSet('i')) && (!user->HasPrivPermission("users/auspex")))
+							continue;
+					}
+
+					SendWhoLine(user, initial, NULL, i->second, whoresults);
+				}
+			}
+		}
+	}
+	/* Send the results out */
+	if ((ServerInstance->Config->MaxWhoResults && (whoresults.size() <= (size_t)ServerInstance->Config->MaxWhoResults)) || opt_unlimit)
+	{
+		for (std::vector<std::string>::const_iterator n = whoresults.begin(); n != whoresults.end(); n++)
+			user->WriteServ(*n);
+		user->WriteNumeric(315, "%s %s :End of /WHO list.",user->nick.c_str(), *parameters[0].c_str() ? parameters[0].c_str() : "*");
+		return CMD_SUCCESS;
+	}
+	else
+	{
+		/* BZZT! Too many results. */
+		user->WriteNumeric(315, "%s %s :Too many results",user->nick.c_str(), parameters[0].c_str());
+		return CMD_FAILURE;
+	}
+}
+
+COMMAND_INIT(CommandWho)