ModResult OnCheckBan(User *user, Channel *c, const std::string& mask)
{
if ((mask.length() > 2) && (mask[0] == 'j') && (mask[1] == ':'))
{
std::string rm = mask.substr(2);
char status = 0;
ModeHandler* mh = ServerInstance->Modes->FindPrefix(rm[0]);
if (mh)
{
rm = mask.substr(3);
status = mh->GetModeChar();
}
for (UCListIter i = user->chans.begin(); i != user->chans.end(); i++)
{
if (InspIRCd::Match((**i).name, rm))
{
if (status)
{
Membership* memb = (**i).GetUser(user);
if (memb && memb->hasMode(status))
return MOD_RES_DENY;
}
else
return MOD_RES_DENY;
}
}
}
return MOD_RES_PASSTHRU;
}
void OnPostJoin(Membership *memb)
{
if (!IS_LOCAL(memb->user))
return;
modelist* list = mh.extItem.get(memb->chan);
if (list)
{
std::string modeline("+");
std::vector<std::string> modechange;
modechange.push_back(memb->chan->name);
for (modelist::iterator it = list->begin(); it != list->end(); it++)
{
std::string::size_type colon = it->mask.find(':');
if (colon == std::string::npos)
continue;
if (memb->chan->CheckBan(memb->user, it->mask.substr(colon+1)))
{
ModeHandler* given = mh.FindMode(it->mask.substr(0, colon));
if (given && given->GetPrefixRank())
modeline.push_back(given->GetModeChar());
}
}
modechange.push_back(modeline);
for(std::string::size_type i = modeline.length(); i > 1; --i) // we use "i > 1" instead of "i" so we skip the +
modechange.push_back(memb->user->nick);
if(modechange.size() >= 3)
ServerInstance->SendGlobalMode(modechange, ServerInstance->FakeClient);
}
}
void DataKeeper::SaveMemberData(Channel* chan, std::vector<OwnedModesExts>& memberdatalist)
{
ModesExts currdata;
const Channel::MemberMap& users = chan->GetUsers();
for (Channel::MemberMap::const_iterator i = users.begin(); i != users.end(); ++i)
{
Membership* const memb = i->second;
for (size_t j = 0; j < handledmodes[MODETYPE_CHANNEL].size(); j++)
{
ModeHandler* mh = handledmodes[MODETYPE_CHANNEL][j].mh;
if ((mh->IsPrefixMode()) && (memb->hasMode(mh->GetModeChar())))
currdata.modelist.push_back(InstanceData(j, memb->user->uuid)); // Need to pass the user's uuid to the mode parser to set the mode later
}
SaveExtensions(memb, currdata.extlist);
// Same logic as in DoSaveUsers()
if (!currdata.empty())
{
memberdatalist.push_back(OwnedModesExts(memb->user->uuid));
memberdatalist.back().swap(currdata);
}
}
}
std::string ModeParser::GiveModeList(ModeType mt)
{
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++)
{
ModeHandler* mh = modehandlers[mt][mode-65];
/* One parameter when adding */
if (mh)
{
if (mh->GetNumParams(true))
{
PrefixMode* pm = mh->IsPrefixMode();
if ((mh->IsListMode()) && ((!pm) || (pm->GetPrefix() == 0)))
{
type1 += mh->GetModeChar();
}
else
{
/* ... and one parameter when removing */
if (mh->GetNumParams(false))
{
/* But not a list mode */
if (!pm)
{
type2 += mh->GetModeChar();
}
}
else
{
/* No parameters when removing */
type3 += mh->GetModeChar();
}
}
}
else
{
type4 += mh->GetModeChar();
}
}
}
return type1 + "," + type2 + "," + type3 + "," + type4;
}
static std::string BuildModeList(ModeType type)
{
std::vector<std::string> modes;
for(char c='A'; c <= 'z'; c++)
{
ModeHandler* mh = ServerInstance->Modes->FindMode(c, type);
if (mh)
{
std::string mdesc = mh->name;
mdesc.push_back('=');
if (mh->GetPrefix())
mdesc.push_back(mh->GetPrefix());
if (mh->GetModeChar())
mdesc.push_back(mh->GetModeChar());
modes.push_back(mdesc);
}
}
sort(modes.begin(), modes.end());
irc::stringjoiner line(" ", modes, 0, modes.size() - 1);
return line.GetJoined();
}
unsigned int ModeParser::ProcessSingle(User* user, Channel* targetchannel, User* targetuser, Modes::ChangeList& changelist, ModeProcessFlag flags, unsigned int beginindex)
{
LastParse.clear();
LastChangeList.clear();
unsigned int modes_processed = 0;
std::string output_mode;
std::string output_parameters;
char output_pm = '\0'; // current output state, '+' or '-'
Modes::ChangeList::List& list = changelist.getlist();
for (Modes::ChangeList::List::iterator i = list.begin()+beginindex; i != list.end(); ++i)
{
modes_processed++;
Modes::Change& item = *i;
ModeHandler* mh = item.mh;
// If the mode is supposed to have a parameter then we first take a look at item.param
// and, if we were asked to, also handle mode merges now
if (mh->GetNumParams(item.adding))
{
// Skip the mode if the parameter does not pass basic validation
if (!IsModeParamValid(user, targetchannel, targetuser, item))
continue;
// If this is a merge and we won we don't apply this mode
if ((flags & MODE_MERGE) && (!ShouldApplyMergedMode(targetchannel, item)))
continue;
}
ModeAction ma = TryMode(user, targetuser, targetchannel, item, (!(flags & MODE_CHECKACCESS)));
if (ma != MODEACTION_ALLOW)
continue;
char needed_pm = item.adding ? '+' : '-';
if (needed_pm != output_pm)
{
output_pm = needed_pm;
output_mode.append(1, output_pm);
}
output_mode.push_back(mh->GetModeChar());
if (!item.param.empty())
{
output_parameters.push_back(' ');
output_parameters.append(item.param);
}
LastChangeList.push(mh, item.adding, item.param);
if ((output_mode.length() + output_parameters.length() > 450)
|| (output_mode.length() > 100)
|| (LastChangeList.size() >= ServerInstance->Config->Limits.MaxModes))
{
/* mode sequence is getting too long */
break;
}
}
if (!output_mode.empty())
{
LastParse = targetchannel ? targetchannel->name : targetuser->nick;
LastParse.append(" ");
LastParse.append(output_mode);
LastParse.append(output_parameters);
if (targetchannel)
targetchannel->WriteChannel(user, "MODE " + LastParse);
else
targetuser->WriteFrom(user, "MODE " + LastParse);
FOREACH_MOD(OnMode, (user, targetuser, targetchannel, LastChangeList, flags, output_mode));
}
return modes_processed;
}
ModeAction ModeParser::TryMode(User* user, User* targetuser, Channel* chan, Modes::Change& mcitem, bool SkipACL)
{
ModeType type = chan ? MODETYPE_CHANNEL : MODETYPE_USER;
ModeHandler* mh = mcitem.mh;
bool adding = mcitem.adding;
int pcnt = mh->GetNumParams(adding);
std::string& parameter = mcitem.param;
// crop mode parameter size to 250 characters
if (parameter.length() > 250 && adding)
parameter.erase(250);
ModResult MOD_RESULT;
FIRST_MOD_RESULT(OnRawMode, MOD_RESULT, (user, chan, mh, parameter, adding));
if (IS_LOCAL(user) && (MOD_RESULT == MOD_RES_DENY))
return MODEACTION_DENY;
const char modechar = mh->GetModeChar();
if (chan && !SkipACL && (MOD_RESULT != MOD_RES_ALLOW))
{
MOD_RESULT = mh->AccessCheck(user, chan, parameter, adding);
if (MOD_RESULT == MOD_RES_DENY)
return MODEACTION_DENY;
if (MOD_RESULT == MOD_RES_PASSTHRU)
{
unsigned int neededrank = mh->GetLevelRequired();
/* 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.
*/
unsigned int ourrank = chan->GetPrefixValue(user);
if (ourrank < neededrank)
{
PrefixMode* neededmh = NULL;
for(char c='A'; c <= 'z'; c++)
{
PrefixMode* privmh = FindPrefixMode(c);
if (privmh && privmh->GetPrefixRank() >= neededrank)
{
// this mode is sufficient to allow this action
if (!neededmh || privmh->GetPrefixRank() < neededmh->GetPrefixRank())
neededmh = privmh;
}
}
if (neededmh)
user->WriteNumeric(ERR_CHANOPRIVSNEEDED, "%s :You must have channel %s access or above to %sset channel mode %c",
chan->name.c_str(), neededmh->name.c_str(), adding ? "" : "un", modechar);
else
user->WriteNumeric(ERR_CHANOPRIVSNEEDED, "%s :You cannot %sset channel mode %c",
chan->name.c_str(), adding ? "" : "un", modechar);
return MODEACTION_DENY;
}
}
}
// Ask mode watchers whether this mode change is OK
std::pair<ModeWatcherMap::iterator, ModeWatcherMap::iterator> itpair = modewatchermap.equal_range(mh->name);
for (ModeWatcherMap::iterator i = itpair.first; i != itpair.second; ++i)
{
ModeWatcher* mw = i->second;
if (mw->GetModeType() == type)
{
if (!mw->BeforeMode(user, targetuser, chan, parameter, adding))
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) && !user->IsOper())
{
char* disabled = (type == MODETYPE_CHANNEL) ? ServerInstance->Config->DisabledCModes : ServerInstance->Config->DisabledUModes;
if (disabled[modechar - 'A'])
{
user->WriteNumeric(ERR_NOPRIVILEGES, ":Permission Denied - %s mode %c has been locked by the administrator",
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 (user->IsOper())
{
user->WriteNumeric(ERR_NOPRIVILEGES, ":Permission Denied - Oper type %s does not have access to set %s mode %c",
user->oper->name.c_str(), type == MODETYPE_CHANNEL ? "channel" : "user", modechar);
}
else
{
user->WriteNumeric(ERR_NOPRIVILEGES, ":Permission Denied - Only operators may set %s mode %c",
type == MODETYPE_CHANNEL ? "channel" : "user", modechar);
}
return MODEACTION_DENY;
}
/* Call the handler for the mode */
ModeAction ma = mh->OnModeChange(user, targetuser, chan, parameter, adding);
if (pcnt && parameter.empty())
return MODEACTION_DENY;
if (ma != MODEACTION_ALLOW)
return ma;
itpair = modewatchermap.equal_range(mh->name);
for (ModeWatcherMap::iterator i = itpair.first; i != itpair.second; ++i)
{
ModeWatcher* mw = i->second;
if (mw->GetModeType() == type)
mw->AfterMode(user, targetuser, chan, parameter, adding);
}
return MODEACTION_ALLOW;
}
