+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2008 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+/* $Core: libIRCDmode */
+/* $ExtraDeps: $(RELCPPFILES) */
+/* $ExtraObjects: modes/modeclasses.a */
+/* $ExtraBuild: @${MAKE} -C "modes" DIRNAME="src/modes" CC="$(CC)" $(MAKEARGS) CPPFILES="$(CPPFILES)" */
+
+#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"
+/* +s (server notices) */
+#include "modes/umode_s.h"
+/* +w (see wallops) */
+#include "modes/umode_w.h"
+/* +i (invisible) */
+#include "modes/umode_i.h"
+/* +o (operator) */
+#include "modes/umode_o.h"
+/* +n (notice mask - our implementation of snomasks) */
+#include "modes/umode_n.h"
+
+ModeHandler::ModeHandler(InspIRCd* Instance, char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly, char mprefix, char prefixrequired)
+ : ServerInstance(Instance), mode(modeletter), n_params_on(parameters_on), n_params_off(parameters_off), list(listmode), m_type(type), oper(operonly), prefix(mprefix), count(0), prefixneeded(prefixrequired)
+{
+}
+
+ModeHandler::~ModeHandler()
+{
+}
+
+bool ModeHandler::IsListMode()
+{
+ return list;
+}
+
+char ModeHandler::GetNeededPrefix()
+{
+ 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;
+}
+
+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;
+}
+
+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*)
+{
+}
+
+bool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string&, const std::string&, Channel*)
+{
+ return (ours < theirs);
+}
+
+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(401, "%s %s :No such nick/channel",user->nick, 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;
+ }
+ 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;
+ }
+ return "";
+}
+
+void ModeParser::DisplayCurrentModes(User *user, User* targetuser, Channel* targetchannel, const char* text)
+{
+ if (targetchannel)
+ {
+ /* Display channel's current mode string */
+ user->WriteNumeric(324, "%s %s +%s",user->nick, targetchannel->name, targetchannel->ChanModes(targetchannel->HasUser(user)));
+ user->WriteNumeric(329, "%s %s %lu", user->nick, targetchannel->name, (unsigned long)targetchannel->age);
+ return;
+ }
+ else if (targetuser)
+ {
+ if (targetuser->Visibility && !targetuser->Visibility->VisibleTo(user))
+ {
+ user->WriteNumeric(401, "%s %s :No such nick/channel",user->nick, text);
+ return;
+ }
+
+ if ((targetuser == user) || (IS_OPER(user)))
+ {
+ /* Display user's current mode string */
+ user->WriteNumeric(221, "%s :+%s",targetuser->nick,targetuser->FormatModes());
+ if (IS_OPER(targetuser))
+ user->WriteNumeric(8, "%s +%s :Server notice mask", targetuser->nick, targetuser->FormatNoticeMasks());
+ return;
+ }
+ else
+ {
+ user->WriteNumeric(502, "%s :Can't change mode for other users", user->nick);
+ return;
+ }
+ }
+
+ /* No such nick/channel */
+ user->WriteNumeric(401, "%s %s :No such nick/channel",user->nick, text);
+ return;
+}
+
+void ModeParser::Process(const char* const* parameters, int pcnt, User *user, bool servermode)
+{
+ std::string target = parameters[0];
+ ModeType type = MODETYPE_USER;
+ unsigned char mask = 0;
+ Channel* targetchannel = ServerInstance->FindChan(parameters[0]);
+ User* targetuser = ServerInstance->FindNick(parameters[0]);
+
+ LastParse.clear();
+
+ /* Special case for displaying the list for listmodes,
+ * e.g. MODE #chan b, or MODE #chan +b without a parameter
+ */
+ if ((targetchannel) && (pcnt == 2))
+ {
+ const char* mode = parameters[1];
+ int nonlistmodes_found = 0;
+ bool sent[256];
+
+ mask = MASK_CHANNEL;
+
+ memset(&sent, 0, 256);
+
+ while (mode && *mode)
+ {
+ unsigned char mletter = *mode;
+
+ if (*mode == '+')
+ {
+ mode++;
+ continue;
+ }
+
+ /* Ensure the user doesnt request the same mode twice,
+ * so they cant flood themselves off out of idiocy.
+ */
+ if (!sent[mletter])
+ {
+ sent[mletter] = true;
+ }
+ else
+ {
+ mode++;
+ continue;
+ }
+
+ ModeHandler *mh = this->FindMode(*mode, MODETYPE_CHANNEL);
+ bool display = true;
+
+ if ((mh) && (mh->IsListMode()))
+ {
+ int MOD_RESULT = 0;
+ FOREACH_RESULT(I_OnRawMode, OnRawMode(user, targetchannel, *mode, "", true, 0));
+ if (MOD_RESULT == ACR_DENY)
+ {
+ mode++;
+ continue;
+ }
+
+ if (ServerInstance->Config->HideModeLists[mletter] && (targetchannel->GetStatus(user) < STATUS_HOP))
+ {
+ user->WriteNumeric(482, "%s %s :Only half-operators and above may view the +%c list",user->nick, targetchannel->name, *mode++);
+ mh->DisplayEmptyList(user, targetchannel);
+ continue;
+ }
+
+ /** See below for a description of what craq this is :D
+ */
+ unsigned char handler_id = (*mode - 65) | mask;
+
+ for(ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
+ {
+ std::string dummyparam;
+
+ if (!((*watchers)->BeforeMode(user, NULL, targetchannel, dummyparam, true, MODETYPE_CHANNEL)))
+ display = false;
+ }
+
+ if (display)
+ mh->DisplayList(user, targetchannel);
+ }
+ else
+ nonlistmodes_found++;
+
+ mode++;
+ }
+
+ /* We didnt have any modes that were non-list, we can return here */
+ if (!nonlistmodes_found)
+ return;
+ }
+
+ if (pcnt == 1)
+ {
+ this->DisplayCurrentModes(user, targetuser, targetchannel, parameters[0]);
+ }
+ else if (pcnt > 1)
+ {
+ bool SkipAccessChecks = false;
+
+ if (targetchannel)
+ {
+ type = MODETYPE_CHANNEL;
+ mask = MASK_CHANNEL;
+
+ /* Extra security checks on channel modes
+ * (e.g. are they a (half)op?
+ */
+
+ if ((IS_LOCAL(user)) && (!ServerInstance->ULine(user->server)) && (!servermode))
+ {
+ /* We don't have halfop */
+ int MOD_RESULT = 0;
+ FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user, NULL, targetchannel, AC_GENERAL_MODE));
+ if (MOD_RESULT == ACR_DENY)
+ return;
+ SkipAccessChecks = (MOD_RESULT == ACR_ALLOW);
+ }
+ }
+ else if (targetuser)
+ {
+ type = MODETYPE_USER;
+ mask = MASK_USER;
+ if ((user != targetuser) && (!ServerInstance->ULine(user->server)))
+ {
+ user->WriteNumeric(502, "%s :Can't change mode for other users", user->nick);
+ return;
+ }
+ }
+ else
+ {
+ /* No such nick/channel */
+ user->WriteNumeric(401, "%s %s :No such nick/channel",user->nick, parameters[0]);
+ return;
+ }
+
+ std::string mode_sequence = parameters[1];
+ std::string parameter;
+ std::ostringstream parameter_list;
+ std::string output_sequence;
+ bool adding = true, state_change = false;
+ unsigned char handler_id = 0;
+ int parameter_counter = 2; /* Index of first parameter */
+ int parameter_count = 0;
+ bool last_successful_state_change = false;
+
+ /* A mode sequence that doesnt start with + or -. Assume +. - Thanks for the suggestion spike (bug#132) */
+ if ((*mode_sequence.begin() != '+') && (*mode_sequence.begin() != '-'))
+ mode_sequence.insert(0, "+");
+
+ for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)
+ {
+ unsigned char modechar = *letter;
+
+ switch (modechar)
+ {
+ /* NB:
+ * For + and - mode characters, we don't just stick the character into the output sequence.
+ * This is because the user may do something dumb, like: +-+ooo or +oo-+. To prevent this
+ * appearing in the output sequence, we store a flag which says there was a state change,
+ * which is set on any + or -, however, the + or - that we finish on is only appended to
+ * the output stream in the event it is followed by a non "+ or -" character, such as o or v.
+ */
+ case '+':
+ /* The following expression prevents: +o+o nick nick, compressing it to +oo nick nick,
+ * however, will allow the + if it is the first item in the sequence, regardless.
+ */
+ if ((!adding) || (!output_sequence.length()))
+ state_change = true;
+ adding = true;
+ if (!output_sequence.length())
+ last_successful_state_change = false;
+ continue;
+ break;
+ case '-':
+ if ((adding) || (!output_sequence.length()))
+ state_change = true;
+ adding = false;
+ if (!output_sequence.length())
+ last_successful_state_change = true;
+ continue;
+ break;
+ default:
+
+ /**
+ * Watch carefully for the sleight of hand trick.
+ * 65 is the ascii value of 'A'. We take this from
+ * the char we're looking at to get a number between
+ * 1 and 127. We then logic-or it to get the hashed
+ * position, dependent on wether its a channel or
+ * a user mode. This is a little stranger, but a lot
+ * faster, than using a map of pairs.
+ */
+ handler_id = (modechar - 65) | mask;
+
+ if (modehandlers[handler_id])
+ {
+ bool abort = false;
+
+ if (modehandlers[handler_id]->GetModeType() == type)
+ {
+ int MOD_RESULT = 0;
+
+ if (modehandlers[handler_id]->GetNumParams(adding))
+ {
+ /* This mode expects a parameter, do we have any parameters left in our list to use? */
+ if (parameter_counter < pcnt)
+ {
+ parameter = parameters[parameter_counter++];
+
+ /* Yerk, invalid! */
+ if ((parameter.find(':') == 0) || (parameter.rfind(' ') != std::string::npos))
+ parameter.clear();
+ }
+ else
+ {
+ /* No parameter, continue to the next mode */
+ continue;
+ }
+
+ FOREACH_RESULT(I_OnRawMode, OnRawMode(user, targetchannel, modechar, parameter, adding, 1, servermode));
+ }
+ else
+ {
+ FOREACH_RESULT(I_OnRawMode, OnRawMode(user, targetchannel, modechar, "", adding, 0, servermode));
+ }
+
+ if (IS_LOCAL(user) && (MOD_RESULT == ACR_DENY))
+ continue;
+
+ if (!SkipAccessChecks && IS_LOCAL(user) && (MOD_RESULT != ACR_ALLOW))
+ {
+ /* Check access to this mode character */
+ if ((type == MODETYPE_CHANNEL) && (modehandlers[handler_id]->GetNeededPrefix()))
+ {
+ char needed = modehandlers[handler_id]->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)
+ prefixmode = FindPrefix('%');
+
+ 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 = targetchannel->GetAllPrefixChars(user);
+ char ml = (modestring.empty() ? '\0' : modestring[0]);
+ ModeHandler* ourmode = FindPrefix(ml);
+ if (!ourmode || ourmode->GetPrefixRank() < neededrank)
+ {
+ /* Bog off */
+ user->WriteNumeric(482, "%s %s :You must have channel privilege %c or above to %sset channel mode %c",
+ user->nick, targetchannel->name, needed, adding ? "" : "un", modechar);
+ continue;
+ }
+ }
+ }
+
+ bool had_parameter = !parameter.empty();
+
+ for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
+ {
+ if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type, servermode) == false)
+ {
+ abort = true;
+ break;
+ }
+ /* A module whacked the parameter completely, and there was one. abort. */
+ if ((had_parameter) && (parameter.empty()))
+ {
+ abort = true;
+ break;
+ }
+ }
+
+ if (abort)
+ continue;
+
+ /* It's an oper only mode, check if theyre an oper. If they arent,
+ * eat any parameter that came with the mode, and continue to next
+ */
+ if (adding && (IS_LOCAL(user)) && (modehandlers[handler_id]->NeedsOper()) && (!user->HasModePermission(modehandlers[handler_id]->GetModeChar(), type)))
+ {
+ if (IS_OPER(user))
+ {
+ user->WriteNumeric(481, "%s :Permission Denied - Oper type %s does not have access to set %s mode %c",
+ user->nick,
+ user->oper,
+ type == MODETYPE_CHANNEL ? "channel" : "user",
+ modehandlers[handler_id]->GetModeChar());
+ }
+ else
+ {
+ user->WriteNumeric(481, "%s :Permission Denied - Only operators may set %s mode %c",
+ user->nick,
+ type == MODETYPE_CHANNEL ? "channel" : "user",
+ modehandlers[handler_id]->GetModeChar());
+ }
+ continue;
+ }
+
+ /* Call the handler for the mode */
+ ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding, servermode);
+
+ if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter.empty()))
+ {
+ /* The handler nuked the parameter and they are supposed to have one.
+ * We CANT continue now, even if they actually returned MODEACTION_ALLOW,
+ * so we bail to the next mode character.
+ */
+ continue;
+ }
+
+ if (ma == MODEACTION_ALLOW)
+ {
+ /* We're about to output a valid mode letter - was there previously a pending state-change? */
+ if (state_change)
+ {
+ if (adding != last_successful_state_change)
+ output_sequence.append(adding ? "+" : "-");
+ last_successful_state_change = adding;
+ }
+
+ /* Add the mode letter */
+ output_sequence.push_back(modechar);
+
+ modehandlers[handler_id]->ChangeCount(adding ? 1 : -1);
+
+ /* Is there a valid parameter for this mode? If so add it to the parameter list */
+ if ((modehandlers[handler_id]->GetNumParams(adding)) && (!parameter.empty()))
+ {
+ parameter_list << " " << parameter;
+ parameter_count++;
+ /* Does this mode have a prefix? */
+ if (modehandlers[handler_id]->GetPrefix() && targetchannel)
+ {
+ User* user_to_prefix = ServerInstance->FindNick(parameter);
+ if (user_to_prefix)
+ targetchannel->SetPrefix(user_to_prefix, modehandlers[handler_id]->GetPrefix(),
+ modehandlers[handler_id]->GetPrefixRank(), adding);
+ }
+ }
+
+ /* Call all the AfterMode events in the mode watchers for this mode */
+ for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
+ (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type, servermode);
+
+ /* Reset the state change flag */
+ state_change = false;
+
+ if ((output_sequence.length() + parameter_list.str().length() > 450) || (output_sequence.length() > 100)
+ || (parameter_count > MAXMODES))
+ {
+ /* We cant have a mode sequence this long */
+ letter = mode_sequence.end() - 1;
+ continue;
+ }
+ }
+ }
+ }
+ else
+ {
+ /* 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, modechar);
+ }
+ break;
+ }
+ }
+
+ /* Was there at least one valid mode in the sequence? */
+ if (!output_sequence.empty())
+ {
+ if (servermode)
+ {
+ if (type == MODETYPE_CHANNEL)
+ {
+ targetchannel->WriteChannelWithServ(ServerInstance->Config->ServerName, "MODE %s %s%s", targetchannel->name, output_sequence.c_str(), parameter_list.str().c_str());
+ this->LastParse = targetchannel->name;
+ }
+ else
+ {
+ targetuser->WriteServ("MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str());
+ this->LastParse = targetuser->nick;
+ }
+ }
+ else
+ {
+ if (type == MODETYPE_CHANNEL)
+ {
+ targetchannel->WriteChannel(user,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());
+ FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, output_sequence + parameter_list.str()));
+ this->LastParse = targetchannel->name;
+ }
+ else
+ {
+ user->WriteTo(targetuser,"MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str());
+ FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, output_sequence + parameter_list.str()));
+ this->LastParse = targetuser->nick;
+ }
+ }
+
+ LastParse.append(" ");
+ LastParse.append(output_sequence);
+ LastParse.append(parameter_list.str());
+ }
+ }
+}
+
+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 ((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++)
+ {
+ if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h'))
+ continue;
+
+ 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++)
+ {
+ if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h'))
+ continue;
+
+ 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::ChanModes()
+{
+ 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++)
+ {
+ if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h'))
+ continue;
+
+ unsigned char pos = (mode-65) | MASK_CHANNEL;
+ /* 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++)
+ {
+ if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h'))
+ continue;
+
+ 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];
+ const char* parameters[] = { user->nick, moderemove };
+
+ if (user->IsModeSet(this->GetModeChar()))
+ {
+ if (stack)
+ {
+ stack->Push(this->GetModeChar());
+ }
+ else
+ {
+ sprintf(moderemove,"-%c",this->GetModeChar());
+ ServerInstance->Parser->CallHandler("MODE", parameters, 2, user);
+ }
+ }
+}
+
+/** This default implementation can remove simple channel modes
+ * (no parameters)
+ */
+void ModeHandler::RemoveMode(Channel* channel, irc::modestacker* stack)
+{
+ char moderemove[MAXBUF];
+ const char* parameters[] = { channel->name, moderemove };
+
+ if (channel->IsModeSet(this->GetModeChar()))
+ {
+ if (stack)
+ {
+ stack->Push(this->GetModeChar());
+ }
+ else
+ {
+ sprintf(moderemove,"-%c",this->GetModeChar());
+ ServerInstance->SendMode(parameters, 2, 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 ModeUserServerNotice(Instance),
+ new ModeUserWallops(Instance),
+ new ModeUserInvisible(Instance),
+ new ModeUserOperator(Instance),
+ new ModeUserServerNoticeMask(Instance),
+ NULL
+ };
+
+ /* Clear mode list */
+ memset(modehandlers, 0, sizeof(modehandlers));
+ memset(modewatchers, 0, sizeof(modewatchers));
+
+ /* Last parse string */
+ LastParse.clear();
+
+ /* Initialise the RFC mode letters */
+ for (int index = 0; modes[index]; index++)
+ this->AddMode(modes[index]);
+}