+/* +------------------------------------+
+ * | 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.
+ *
+ * ---------------------------------------------------
+ */
+
+/* $Core */
+
+#include "inspircd.h"
+#include "inspstring.h"
+
+/* +s (secret) */
+#include "modes/cmode_s.h"
+/* +p (private) */
+#include "modes/cmode_p.h"
+/* +b (bans) */
+#include "modes/cmode_b.h"
+/* +m (moderated) */
+#include "modes/cmode_m.h"
+/* +t (only (half) ops can change topic) */
+#include "modes/cmode_t.h"
+/* +n (no external messages) */
+#include "modes/cmode_n.h"
+/* +i (invite only) */
+#include "modes/cmode_i.h"
+/* +k (keyed channel) */
+#include "modes/cmode_k.h"
+/* +l (channel user limit) */
+#include "modes/cmode_l.h"
+/* +o (channel op) */
+#include "modes/cmode_o.h"
+/* +h (channel halfop) */
+#include "modes/cmode_h.h"
+/* +v (channel voice) */
+#include "modes/cmode_v.h"
+/* +w (see wallops) */
+#include "modes/umode_w.h"
+/* +i (invisible) */
+#include "modes/umode_i.h"
+/* +o (operator) */
+#include "modes/umode_o.h"
+/* +s (server notice masks) */
+#include "modes/umode_s.h"
+
+ModeHandler::ModeHandler(InspIRCd* Instance, char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly, char mprefix, char prefixrequired, TranslateType translate)
+ : ServerInstance(Instance), mode(modeletter), n_params_on(parameters_on), n_params_off(parameters_off), list(listmode), m_type(type), m_paramtype(translate), oper(operonly), prefix(mprefix), count(0), prefixneeded(prefixrequired)
+{
+}
+
+ModeHandler::~ModeHandler()
+{
+}
+
+bool ModeHandler::IsListMode()
+{
+ return list;
+}
+
+char ModeHandler::GetNeededPrefix()
+{
+ if (prefixneeded == '%' && !ServerInstance->Config->AllowHalfop)
+ return '@';
+ return prefixneeded;
+}
+
+void ModeHandler::SetNeededPrefix(char needsprefix)
+{
+ prefixneeded = needsprefix;
+}
+
+unsigned int ModeHandler::GetPrefixRank()
+{
+ return 0;
+}
+
+unsigned int ModeHandler::GetCount()
+{
+ return 0;
+}
+
+void ModeHandler::ChangeCount(int modifier)
+{
+ count += modifier;
+ ServerInstance->Logs->Log("MODE", DEBUG,"Change count for mode %c is now %d", mode, count);
+}
+
+ModeType ModeHandler::GetModeType()
+{
+ return m_type;
+}
+
+TranslateType ModeHandler::GetTranslateType()
+{
+ return m_paramtype;
+}
+
+bool ModeHandler::NeedsOper()
+{
+ return oper;
+}
+
+char ModeHandler::GetPrefix()
+{
+ return prefix;
+}
+
+int ModeHandler::GetNumParams(bool adding)
+{
+ return adding ? n_params_on : n_params_off;
+}
+
+char ModeHandler::GetModeChar()
+{
+ return mode;
+}
+
+std::string ModeHandler::GetUserParameter(User* user)
+{
+ return "";
+}
+
+ModeAction ModeHandler::OnModeChange(User*, User*, Channel*, std::string&, bool, bool)
+{
+ return MODEACTION_DENY;
+}
+
+ModePair ModeHandler::ModeSet(User*, User* dest, Channel* channel, const std::string&)
+{
+ if (dest)
+ {
+ return std::make_pair(dest->IsModeSet(this->mode), "");
+ }
+ else
+ {
+ return std::make_pair(channel->IsModeSet(this->mode), "");
+ }
+}
+
+void ModeHandler::DisplayList(User*, Channel*)
+{
+}
+
+void ModeHandler::DisplayEmptyList(User*, Channel*)
+{
+}
+
+void ModeHandler::OnParameterMissing(User* user, User* dest, Channel* channel)
+{
+}
+
+bool ModeHandler::CheckTimeStamp(std::string& theirs, const std::string& ours, Channel*)
+{
+ return (theirs < ours);
+}
+
+SimpleUserModeHandler::SimpleUserModeHandler(InspIRCd* Instance, char modeletter) : ModeHandler(Instance, modeletter, 0, 0, false, MODETYPE_USER, false)
+{
+}
+
+SimpleUserModeHandler::~SimpleUserModeHandler()
+{
+}
+
+SimpleChannelModeHandler::~SimpleChannelModeHandler()
+{
+}
+
+SimpleChannelModeHandler::SimpleChannelModeHandler(InspIRCd* Instance, char modeletter) : ModeHandler(Instance, modeletter, 0, 0, false, MODETYPE_CHANNEL, false)
+{
+}
+
+ModeAction SimpleUserModeHandler::OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding, bool servermode)
+{
+ if (adding)
+ {
+ if (!dest->IsModeSet(this->GetModeChar()))
+ {
+ dest->SetMode(this->GetModeChar(),true);
+ return MODEACTION_ALLOW;
+ }
+ }
+ else
+ {
+ if (dest->IsModeSet(this->GetModeChar()))
+ {
+ dest->SetMode(this->GetModeChar(),false);
+ return MODEACTION_ALLOW;
+ }
+ }
+
+ return MODEACTION_DENY;
+}
+
+
+ModeAction SimpleChannelModeHandler::OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding, bool servermode)
+{
+ if (adding)
+ {
+ if (!channel->IsModeSet(this->GetModeChar()))
+ {
+ channel->SetMode(this->GetModeChar(),true);
+ return MODEACTION_ALLOW;
+ }
+ }
+ else
+ {
+ if (channel->IsModeSet(this->GetModeChar()))
+ {
+ channel->SetMode(this->GetModeChar(),false);
+ return MODEACTION_ALLOW;
+ }
+ }
+
+ return MODEACTION_DENY;
+}
+
+ModeWatcher::ModeWatcher(InspIRCd* Instance, char modeletter, ModeType type) : ServerInstance(Instance), mode(modeletter), m_type(type)
+{
+}
+
+ModeWatcher::~ModeWatcher()
+{
+}
+
+char ModeWatcher::GetModeChar()
+{
+ return mode;
+}
+
+ModeType ModeWatcher::GetModeType()
+{
+ return m_type;
+}
+
+bool ModeWatcher::BeforeMode(User*, User*, Channel*, std::string&, bool, ModeType, bool)
+{
+ return true;
+}
+
+void ModeWatcher::AfterMode(User*, User*, Channel*, const std::string&, bool, ModeType, bool)
+{
+}
+
+User* ModeParser::SanityChecks(User *user, const char *dest, Channel *chan, int)
+{
+ User *d;
+ if ((!user) || (!dest) || (!chan) || (!*dest))
+ {
+ return NULL;
+ }
+ d = ServerInstance->FindNick(dest);
+ if (!d)
+ {
+ user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel",user->nick.c_str(), dest);
+ return NULL;
+ }
+ return d;
+}
+
+const char* ModeParser::Grant(User *d,Channel *chan,int MASK)
+{
+ if (!chan)
+ return "";
+
+ UCListIter n = d->chans.find(chan);
+ if (n != d->chans.end())
+ {
+ if (n->second & MASK)
+ {
+ return "";
+ }
+ n->second = n->second | MASK;
+ switch (MASK)
+ {
+ case UCMODE_OP:
+ n->first->AddOppedUser(d);
+ break;
+ case UCMODE_HOP:
+ n->first->AddHalfoppedUser(d);
+ break;
+ case UCMODE_VOICE:
+ n->first->AddVoicedUser(d);
+ break;
+ }
+ return d->nick.c_str();
+ }
+ return "";
+}
+
+const char* ModeParser::Revoke(User *d,Channel *chan,int MASK)
+{
+ if (!chan)
+ return "";
+
+ UCListIter n = d->chans.find(chan);
+ if (n != d->chans.end())
+ {
+ if ((n->second & MASK) == 0)
+ {
+ return "";
+ }
+ n->second ^= MASK;
+ switch (MASK)
+ {
+ case UCMODE_OP:
+ n->first->DelOppedUser(d);
+ break;
+ case UCMODE_HOP:
+ n->first->DelHalfoppedUser(d);
+ break;
+ case UCMODE_VOICE:
+ n->first->DelVoicedUser(d);
+ break;
+ }
+ return d->nick.c_str();
+ }
+ return "";
+}
+
+void ModeParser::DisplayCurrentModes(User *user, User* targetuser, Channel* targetchannel, const char* text)
+{
+ if (targetchannel)
+ {
+ /* Display channel's current mode string */
+ user->WriteNumeric(RPL_CHANNELMODEIS, "%s %s +%s",user->nick.c_str(), targetchannel->name.c_str(), targetchannel->ChanModes(targetchannel->HasUser(user)));
+ user->WriteNumeric(RPL_CHANNELCREATED, "%s %s %lu", user->nick.c_str(), targetchannel->name.c_str(), (unsigned long)targetchannel->age);
+ return;
+ }
+ else
+ {
+ if (targetuser->Visibility && !targetuser->Visibility->VisibleTo(user))
+ {
+ user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel",user->nick.c_str(), text);
+ return;
+ }
+
+ if (targetuser == user || user->HasPrivPermission("users/auspex"))
+ {
+ /* Display user's current mode string */
+ user->WriteNumeric(RPL_UMODEIS, "%s :+%s",targetuser->nick.c_str(),targetuser->FormatModes());
+ if (IS_OPER(targetuser))
+ user->WriteNumeric(RPL_SNOMASKIS, "%s +%s :Server notice mask", targetuser->nick.c_str(), targetuser->FormatNoticeMasks());
+ return;
+ }
+ else
+ {
+ user->WriteNumeric(ERR_USERSDONTMATCH, "%s :Can't change mode for other users", user->nick.c_str());
+ return;
+ }
+ }
+}
+
+ModeAction ModeParser::TryMode(User* user, User* targetuser, Channel* chan, bool adding, const unsigned char modechar,
+ std::string ¶meter, bool servermode, bool SkipACL)
+{
+ ModeType type = chan ? MODETYPE_CHANNEL : MODETYPE_USER;
+ unsigned char mask = chan ? MASK_CHANNEL : MASK_USER;
+
+ ModeHandler *mh = FindMode(modechar, type);
+ int pcnt = mh->GetNumParams(adding);
+
+ int MOD_RESULT = 0;
+ FOREACH_RESULT(I_OnRawMode, OnRawMode(user, chan, modechar, parameter, adding, pcnt, servermode));
+
+ if (IS_LOCAL(user) && (MOD_RESULT == ACR_DENY))
+ return MODEACTION_DENY;
+
+ if (chan && !SkipACL && (MOD_RESULT != ACR_ALLOW))
+ {
+ char needed = mh->GetNeededPrefix();
+ ModeHandler* prefixmode = FindPrefix(needed);
+
+ /* If the mode defined by the handler is not '\0', but the handler for it
+ * cannot be found, they probably dont have the right module loaded to implement
+ * the prefix they want to compare the mode against, e.g. '&' for m_chanprotect.
+ * Revert to checking against the minimum core prefix, '%'.
+ */
+ if (needed && !prefixmode)
+ {
+ needed = ServerInstance->Config->AllowHalfop ? '%' : '@';
+ prefixmode = FindPrefix(needed);
+ }
+
+ if (needed)
+ {
+ unsigned int neededrank = prefixmode->GetPrefixRank();
+ /* Compare our rank on the channel against the rank of the required prefix,
+ * allow if >= ours. Because mIRC and xchat throw a tizz if the modes shown
+ * in NAMES(X) are not in rank order, we know the most powerful mode is listed
+ * first, so we don't need to iterate, we just look up the first instead.
+ */
+ std::string modestring = chan->GetAllPrefixChars(user);
+ char ml = (modestring.empty() ? '\0' : modestring[0]);
+ ModeHandler* ourmode = FindPrefix(ml);
+ if (!ourmode || ourmode->GetPrefixRank() < neededrank)
+ {
+ /* Bog off */
+ user->WriteNumeric(ERR_CHANOPRIVSNEEDED, "%s %s :You must have channel privilege %c or above to %sset channel mode %c",
+ user->nick.c_str(), chan->name.c_str(), needed, adding ? "" : "un", modechar);
+ return MODEACTION_DENY;
+ }
+ }
+ }
+
+ unsigned char handler_id = (modechar - 'A') | mask;
+
+ for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
+ {
+ if ((*watchers)->BeforeMode(user, targetuser, chan, parameter, adding, type, servermode) == false)
+ return MODEACTION_DENY;
+ /* A module whacked the parameter completely, and there was one. abort. */
+ if (pcnt && parameter.empty())
+ return MODEACTION_DENY;
+ }
+
+ if (IS_LOCAL(user) && !IS_OPER(user))
+ {
+ char* disabled = (type == MODETYPE_CHANNEL) ? ServerInstance->Config->DisabledCModes : ServerInstance->Config->DisabledUModes;
+ if (disabled[modechar - 'A'])
+ {
+ user->WriteNumeric(ERR_NOPRIVILEGES, "%s :Permission Denied - %s mode %c has been locked by the administrator",
+ user->nick.c_str(), type == MODETYPE_CHANNEL ? "channel" : "user", modechar);
+ return MODEACTION_DENY;
+ }
+ }
+
+ if (adding && IS_LOCAL(user) && mh->NeedsOper() && !user->HasModePermission(modechar, type))
+ {
+ /* It's an oper only mode, and they don't have access to it. */
+ if (IS_OPER(user))
+ {
+ user->WriteNumeric(ERR_NOPRIVILEGES, "%s :Permission Denied - Oper type %s does not have access to set %s mode %c",
+ user->nick.c_str(), user->oper.c_str(), type == MODETYPE_CHANNEL ? "channel" : "user", modechar);
+ }
+ else
+ {
+ user->WriteNumeric(ERR_NOPRIVILEGES, "%s :Permission Denied - Only operators may set %s mode %c",
+ user->nick.c_str(), type == MODETYPE_CHANNEL ? "channel" : "user", modechar);
+ }
+ return MODEACTION_DENY;
+ }
+
+ /* Call the handler for the mode */
+ ModeAction ma = mh->OnModeChange(user, targetuser, chan, parameter, adding, servermode);
+
+ if (pcnt && parameter.empty())
+ return MODEACTION_DENY;
+
+ if (ma != MODEACTION_ALLOW)
+ return ma;
+
+ mh->ChangeCount(adding ? 1 : -1);
+
+ if (mh->GetPrefix() && chan)
+ {
+ User* user_to_prefix = ServerInstance->FindNick(parameter);
+ if (user_to_prefix)
+ chan->SetPrefix(user_to_prefix, mh->GetPrefix(), mh->GetPrefixRank(), adding);
+ }
+
+ for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
+ (*watchers)->AfterMode(user, targetuser, chan, parameter, adding, type, servermode);
+
+ return MODEACTION_ALLOW;
+}
+
+void ModeParser::Process(const std::vector<std::string>& parameters, User *user, bool servermode, bool merge)
+{
+ std::string target = parameters[0];
+ Channel* targetchannel = ServerInstance->FindChan(target);
+ User* targetuser = ServerInstance->FindNick(target);
+ ModeType type = targetchannel ? MODETYPE_CHANNEL : MODETYPE_USER;
+
+ LastParse.clear();
+ LastParseParams.clear();
+ LastParseTranslate.clear();
+
+ if (!targetchannel && !targetuser)
+ {
+ user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel",user->nick.c_str(),target.c_str());
+ return;
+ }
+ if (parameters.size() == 1)
+ {
+ this->DisplayCurrentModes(user, targetuser, targetchannel, target.c_str());
+ return;
+ }
+
+ std::string mode_sequence = parameters[1];
+
+ bool SkipAccessChecks = false;
+
+ if (servermode || !IS_LOCAL(user) || ServerInstance->ULine(user->server))
+ {
+ SkipAccessChecks = true;
+ }
+ else if (targetchannel)
+ {
+ /* Overall access control hook for mode change */
+ LastParse = mode_sequence;
+ int MOD_RESULT = 0;
+ FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user, NULL, targetchannel, AC_GENERAL_MODE));
+ LastParse.clear();
+ if (MOD_RESULT == ACR_DENY)
+ return;
+ SkipAccessChecks = (MOD_RESULT == ACR_ALLOW);
+ }
+ else
+ {
+ if (user != targetuser)
+ {
+ user->WriteNumeric(ERR_USERSDONTMATCH, "%s :Can't change mode for other users", user->nick.c_str());
+ return;
+ }
+ }
+
+
+ std::string output_mode;
+ std::ostringstream output_parameters;
+ LastParseParams.push_back(output_mode);
+ LastParseTranslate.push_back(TR_TEXT);
+
+ bool adding = true;
+ char output_pm = '\0'; // current output state, '+' or '-'
+ unsigned int param_at = 2;
+
+ for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)
+ {
+ unsigned char modechar = *letter;
+ if (modechar == '+' || modechar == '-')
+ {
+ adding = (modechar == '+');
+ continue;
+ }
+
+ ModeHandler *mh = this->FindMode(modechar, type);
+ if (!mh)
+ {
+ /* No mode handler? Unknown mode character then. */
+ user->WriteServ("%d %s %c :is unknown mode char to me", type == MODETYPE_CHANNEL ? 472 : 501, user->nick.c_str(), modechar);
+ continue;
+ }
+
+ std::string parameter = "";
+ int pcnt = mh->GetNumParams(adding);
+ if (pcnt && param_at == parameters.size())
+ {
+ /* No parameter, continue to the next mode */
+ mh->OnParameterMissing(user, targetuser, targetchannel);
+ continue;
+ }
+ else if (pcnt)
+ {
+ parameter = parameters[param_at++];
+ /* Make sure the user isn't trying to slip in an invalid parameter */
+ if ((parameter.find(':') == 0) || (parameter.rfind(' ') != std::string::npos))
+ continue;
+ if (merge && targetchannel && targetchannel->IsModeSet(modechar) && !mh->IsListMode())
+ {
+ std::string ours = targetchannel->GetModeParameter(modechar);
+ if (!mh->CheckTimeStamp(parameter, ours, targetchannel))
+ /* we won the mode merge, don't apply this mode */
+ continue;
+ }
+ }
+
+ ModeAction ma = TryMode(user, targetuser, targetchannel, adding, modechar, parameter, servermode, SkipAccessChecks);
+
+ if (ma != MODEACTION_ALLOW)
+ continue;
+
+ char needed_pm = adding ? '+' : '-';
+ if (needed_pm != output_pm)
+ {
+ output_pm = needed_pm;
+ output_mode.append(1, output_pm);
+ }
+ output_mode.append(1, modechar);
+
+ if (pcnt)
+ {
+ output_parameters << " " << parameter;
+ LastParseParams.push_back(parameter);
+ LastParseTranslate.push_back(mh->GetTranslateType());
+ }
+
+ if ( (output_mode.length() + output_parameters.str().length() > 450)
+ || (output_mode.length() > 100)
+ || (LastParseParams.size() > ServerInstance->Config->Limits.MaxModes))
+ {
+ /* mode sequence is getting too long */
+ break;
+ }
+ }
+
+ LastParseParams[0] = output_mode;
+
+ if (!output_mode.empty())
+ {
+ LastParse = targetchannel ? targetchannel->name : targetuser->nick;
+ LastParse.append(" ");
+ LastParse.append(output_mode);
+ LastParse.append(output_parameters.str());
+
+ if (!user && targetchannel)
+ targetchannel->WriteChannelWithServ(ServerInstance->Config->ServerName, "MODE %s", LastParse.c_str());
+ else if (!user && targetuser)
+ targetuser->WriteServ("MODE %s", LastParse.c_str());
+ else if (targetchannel)
+ {
+ targetchannel->WriteChannel(user, "MODE %s", LastParse.c_str());
+ FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, LastParseParams, LastParseTranslate));
+ }
+ else if (targetuser)
+ {
+ targetuser->WriteFrom(user, "MODE %s", LastParse.c_str());
+ FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, LastParseParams, LastParseTranslate));
+ }
+ }
+ else if (targetchannel && parameters.size() == 2)
+ {
+ /* Special case for displaying the list for listmodes,
+ * e.g. MODE #chan b, or MODE #chan +b without a parameter
+ */
+ this->DisplayListModes(user, targetchannel, mode_sequence);
+ }
+}
+
+void ModeParser::DisplayListModes(User* user, Channel* chan, std::string &mode_sequence)
+{
+ seq++;
+
+ for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)
+ {
+ unsigned char mletter = *letter;
+ if (mletter == '+')
+ continue;
+
+ /* Ensure the user doesnt request the same mode twice,
+ * so they cant flood themselves off out of idiocy.
+ */
+ if (sent[mletter] == seq)
+ continue;
+
+ sent[mletter] = seq;
+
+ ModeHandler *mh = this->FindMode(mletter, MODETYPE_CHANNEL);
+
+ if (!mh || !mh->IsListMode())
+ return;
+
+ int MOD_RESULT = 0;
+ FOREACH_RESULT(I_OnRawMode, OnRawMode(user, chan, mletter, "", true, 0));
+ if (MOD_RESULT == ACR_DENY)
+ continue;
+
+ bool display = true;
+ if (!user->HasPrivPermission("channels/auspex") && ServerInstance->Config->HideModeLists[mletter] && (chan->GetStatus(user) < STATUS_HOP))
+ {
+ user->WriteNumeric(ERR_CHANOPRIVSNEEDED, "%s %s :Only half-operators and above may view the +%c list",
+ user->nick.c_str(), chan->name.c_str(), mletter);
+ display = false;
+ }
+
+ /** See below for a description of what craq this is :D
+ */
+ unsigned char handler_id = (mletter - 'A') | MASK_CHANNEL;
+
+ for(ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
+ {
+ std::string dummyparam;
+
+ if (!((*watchers)->BeforeMode(user, NULL, chan, dummyparam, true, MODETYPE_CHANNEL)))
+ display = false;
+ }
+ if (display)
+ mh->DisplayList(user, chan);
+ else
+ mh->DisplayEmptyList(user, chan);
+ }
+}
+
+const std::string& ModeParser::GetLastParse()
+{
+ return LastParse;
+}
+
+void ModeParser::CleanMask(std::string &mask)
+{
+ std::string::size_type pos_of_pling = mask.find_first_of('!');
+ std::string::size_type pos_of_at = mask.find_first_of('@');
+ std::string::size_type pos_of_dot = mask.find_first_of('.');
+ std::string::size_type pos_of_colons = mask.find("::"); /* Because ipv6 addresses are colon delimited -- double so it treats extban as nick */
+
+ if (mask.length() >= 2 && mask[1] == ':')
+ return; // if it's an extban, don't even try guess how it needs to be formed.
+
+ if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos))
+ {
+ /* Just a nick, or just a host - or clearly ipv6 (starting with :) */
+ if ((pos_of_dot == std::string::npos) && (pos_of_colons == std::string::npos) && mask[0] != ':')
+ {
+ /* It has no '.' in it, it must be a nick. */
+ mask.append("!*@*");
+ }
+ else
+ {
+ /* Got a dot in it? Has to be a host */
+ mask = "*!*@" + mask;
+ }
+ }
+ else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos))
+ {
+ /* Has an @ but no !, its a user@host */
+ mask = "*!" + mask;
+ }
+ else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos))
+ {
+ /* Has a ! but no @, it must be a nick!ident */
+ mask.append("@*");
+ }
+}
+
+bool ModeParser::AddMode(ModeHandler* mh)
+{
+ unsigned char mask = 0;
+ unsigned char pos = 0;
+
+ /* Yes, i know, this might let people declare modes like '_' or '^'.
+ * If they do that, thats their problem, and if i ever EVER see an
+ * official InspIRCd developer do that, i'll beat them with a paddle!
+ */
+ if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z') || (mh->GetPrefix() > 126))
+ return false;
+
+ /* A mode prefix of ',' is not acceptable, it would fuck up server to server.
+ * A mode prefix of ':' will fuck up both server to server, and client to server.
+ * A mode prefix of '#' will mess up /whois and /privmsg
+ */
+ if ((mh->GetPrefix() == ',') || (mh->GetPrefix() == ':') || (mh->GetPrefix() == '#'))
+ return false;
+
+ mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
+ pos = (mh->GetModeChar()-65) | mask;
+
+ if (modehandlers[pos])
+ return false;
+
+ modehandlers[pos] = mh;
+ return true;
+}
+
+bool ModeParser::DelMode(ModeHandler* mh)
+{
+ unsigned char mask = 0;
+ unsigned char pos = 0;
+
+ if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z'))
+ return false;
+
+ mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
+ pos = (mh->GetModeChar()-65) | mask;
+
+ if (!modehandlers[pos])
+ return false;
+
+ /* Note: We can't stack here, as we have modes potentially being removed across many different channels.
+ * To stack here we have to make the algorithm slower. Discuss.
+ */
+ switch (mh->GetModeType())
+ {
+ case MODETYPE_USER:
+ for (user_hash::iterator i = ServerInstance->Users->clientlist->begin(); i != ServerInstance->Users->clientlist->end(); i++)
+ {
+ mh->RemoveMode(i->second);
+ }
+ break;
+ case MODETYPE_CHANNEL:
+ for (chan_hash::iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); i++)
+ {
+ mh->RemoveMode(i->second);
+ }
+ break;
+ }
+
+ modehandlers[pos] = NULL;
+
+ return true;
+}
+
+ModeHandler* ModeParser::FindMode(unsigned const char modeletter, ModeType mt)
+{
+ unsigned char mask = 0;
+ unsigned char pos = 0;
+
+ if ((modeletter < 'A') || (modeletter > 'z'))
+ return NULL;
+
+ mt == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
+ pos = (modeletter-65) | mask;
+
+ return modehandlers[pos];
+}
+
+std::string ModeParser::UserModeList()
+{
+ char modestr[256];
+ int pointer = 0;
+
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | MASK_USER;
+
+ if (modehandlers[pos])
+ modestr[pointer++] = mode;
+ }
+ modestr[pointer++] = 0;
+ return modestr;
+}
+
+std::string ModeParser::ChannelModeList()
+{
+ char modestr[256];
+ int pointer = 0;
+
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | MASK_CHANNEL;
+
+ if (modehandlers[pos])
+ modestr[pointer++] = mode;
+ }
+ modestr[pointer++] = 0;
+ return modestr;
+}
+
+std::string ModeParser::ParaModeList()
+{
+ char modestr[256];
+ int pointer = 0;
+
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | MASK_CHANNEL;
+
+ if ((modehandlers[pos]) && (modehandlers[pos]->GetNumParams(true)))
+ modestr[pointer++] = mode;
+ }
+ modestr[pointer++] = 0;
+ return modestr;
+}
+
+ModeHandler* ModeParser::FindPrefix(unsigned const char pfxletter)
+{
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | MASK_CHANNEL;
+
+ if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix() == pfxletter))
+ {
+ return modehandlers[pos];
+ }
+ }
+ return NULL;
+}
+
+std::string ModeParser::ModeString(User* user, Channel* channel, bool nick_suffix)
+{
+ std::string types;
+ std::string pars;
+
+ if (!channel || !user)
+ return "";
+
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | MASK_CHANNEL;
+ ModeHandler* mh = modehandlers[pos];
+ if ((mh) && (mh->GetNumParams(true)) && (mh->GetNumParams(false)))
+ {
+ ModePair ret;
+ ret = mh->ModeSet(NULL, user, channel, user->nick);
+ if ((ret.first) && (ret.second == user->nick))
+ {
+ if (nick_suffix)
+ {
+ pars.append(" ");
+ pars.append(user->nick);
+ }
+ types.push_back(mh->GetModeChar());
+ }
+ }
+ }
+
+ if (nick_suffix)
+ return types+pars;
+ else
+ return types;
+}
+
+std::string ModeParser::GiveModeList(ModeMasks m)
+{
+ std::string type1; /* Listmodes EXCEPT those with a prefix */
+ std::string type2; /* Modes that take a param when adding or removing */
+ std::string type3; /* Modes that only take a param when adding */
+ std::string type4; /* Modes that dont take a param */
+
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | m;
+ /* One parameter when adding */
+ if (modehandlers[pos])
+ {
+ if (modehandlers[pos]->GetNumParams(true))
+ {
+ if ((modehandlers[pos]->IsListMode()) && (!modehandlers[pos]->GetPrefix()))
+ {
+ type1 += modehandlers[pos]->GetModeChar();
+ }
+ else
+ {
+ /* ... and one parameter when removing */
+ if (modehandlers[pos]->GetNumParams(false))
+ {
+ /* But not a list mode */
+ if (!modehandlers[pos]->GetPrefix())
+ {
+ type2 += modehandlers[pos]->GetModeChar();
+ }
+ }
+ else
+ {
+ /* No parameters when removing */
+ type3 += modehandlers[pos]->GetModeChar();
+ }
+ }
+ }
+ else
+ {
+ type4 += modehandlers[pos]->GetModeChar();
+ }
+ }
+ }
+
+ return type1 + "," + type2 + "," + type3 + "," + type4;
+}
+
+bool ModeParser::PrefixComparison(prefixtype one, prefixtype two)
+{
+ return one.second > two.second;
+}
+
+std::string ModeParser::BuildPrefixes()
+{
+ std::string mletters;
+ std::string mprefixes;
+ pfxcontainer pfx;
+ std::map<char,char> prefix_to_mode;
+
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | MASK_CHANNEL;
+
+ if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix()))
+ {
+ pfx.push_back(std::make_pair<char,unsigned int>(modehandlers[pos]->GetPrefix(), modehandlers[pos]->GetPrefixRank()));
+ prefix_to_mode[modehandlers[pos]->GetPrefix()] = modehandlers[pos]->GetModeChar();
+ }
+ }
+
+ sort(pfx.begin(), pfx.end(), ModeParser::PrefixComparison);
+
+ for (pfxcontainer::iterator n = pfx.begin(); n != pfx.end(); n++)
+ {
+ mletters = mletters + n->first;
+ mprefixes = mprefixes + prefix_to_mode.find(n->first)->second;
+ }
+
+ return "(" + mprefixes + ")" + mletters;
+}
+
+bool ModeParser::AddModeWatcher(ModeWatcher* mw)
+{
+ unsigned char mask = 0;
+ unsigned char pos = 0;
+
+ if (!mw)
+ return false;
+
+ if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z'))
+ return false;
+
+ mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
+ pos = (mw->GetModeChar()-65) | mask;
+
+ modewatchers[pos].push_back(mw);
+
+ return true;
+}
+
+bool ModeParser::DelModeWatcher(ModeWatcher* mw)
+{
+ unsigned char mask = 0;
+ unsigned char pos = 0;
+
+ if (!mw)
+ return false;
+
+ if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z'))
+ return false;
+
+ mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
+ pos = (mw->GetModeChar()-65) | mask;
+
+ ModeWatchIter a = find(modewatchers[pos].begin(),modewatchers[pos].end(),mw);
+
+ if (a == modewatchers[pos].end())
+ {
+ return false;
+ }
+
+ modewatchers[pos].erase(a);
+
+ return true;
+}
+
+/** This default implementation can remove simple user modes
+ */
+void ModeHandler::RemoveMode(User* user, irc::modestacker* stack)
+{
+ char moderemove[MAXBUF];
+ std::vector<std::string> parameters;
+
+ if (user->IsModeSet(this->GetModeChar()))
+ {
+ if (stack)
+ {
+ stack->Push(this->GetModeChar());
+ }
+ else
+ {
+ sprintf(moderemove,"-%c",this->GetModeChar());
+ parameters.push_back(user->nick);
+ parameters.push_back(moderemove);
+ ServerInstance->Modes->Process(parameters, ServerInstance->FakeClient, true);
+ }
+ }
+}
+
+/** This default implementation can remove simple channel modes
+ * (no parameters)
+ */
+void ModeHandler::RemoveMode(Channel* channel, irc::modestacker* stack)
+{
+ char moderemove[MAXBUF];
+ std::vector<std::string> parameters;
+
+ if (channel->IsModeSet(this->GetModeChar()))
+ {
+ if (stack)
+ {
+ stack->Push(this->GetModeChar());
+ }
+ else
+ {
+ sprintf(moderemove,"-%c",this->GetModeChar());
+ parameters.push_back(channel->name);
+ parameters.push_back(moderemove);
+ ServerInstance->SendMode(parameters, ServerInstance->FakeClient);
+ }
+ }
+}
+
+ModeParser::ModeParser(InspIRCd* Instance) : ServerInstance(Instance)
+{
+ ModeHandler* modes[] =
+ {
+ new ModeChannelSecret(Instance),
+ new ModeChannelPrivate(Instance),
+ new ModeChannelModerated(Instance),
+ new ModeChannelTopicOps(Instance),
+ new ModeChannelNoExternal(Instance),
+ new ModeChannelInviteOnly(Instance),
+ new ModeChannelKey(Instance),
+ new ModeChannelLimit(Instance),
+ new ModeChannelBan(Instance),
+ new ModeChannelOp(Instance),
+ new ModeChannelHalfOp(Instance),
+ new ModeChannelVoice(Instance),
+ new ModeUserWallops(Instance),
+ new ModeUserInvisible(Instance),
+ new ModeUserOperator(Instance),
+ new ModeUserServerNoticeMask(Instance),
+ NULL
+ };
+
+ /* Clear mode handler list */
+ memset(modehandlers, 0, sizeof(modehandlers));
+
+ /* Last parse string */
+ LastParse.clear();
+
+ /* Initialise the RFC mode letters */
+ for (int index = 0; modes[index]; index++)
+ this->AddMode(modes[index]);
+
+ seq = 0;
+ memset(&sent, 0, sizeof(sent));
+}