#include "builtinmodes.h"
ModeHandler::ModeHandler(Module* Creator, const std::string& Name, char modeletter, ParamSpec Params, ModeType type, Class mclass)
- : ServiceProvider(Creator, Name, SERVICE_MODE), modeid(ModeParser::MODEID_MAX), m_paramtype(TR_TEXT),
+ : ServiceProvider(Creator, Name, SERVICE_MODE), modeid(ModeParser::MODEID_MAX),
parameters_taken(Params), mode(modeletter), oper(false),
list(false), m_type(type), type_id(mclass), levelrequired(HALFOP_VALUE)
{
, prefix(PrefixChar), prefixrank(Rank)
{
list = true;
- m_paramtype = TR_NICK;
}
ModeAction PrefixMode::OnModeChange(User* source, User*, Channel* chan, std::string& parameter, bool adding)
return MODEACTION_ALLOW;
}
-ModeAction ModeParser::TryMode(User* user, User* targetuser, Channel* chan, bool adding, const unsigned char modechar,
- std::string ¶meter, bool SkipACL)
+ModeAction ModeParser::TryMode(User* user, User* targetuser, Channel* chan, Modes::Change& mcitem, bool SkipACL)
{
ModeType type = chan ? MODETYPE_CHANNEL : MODETYPE_USER;
- ModeHandler *mh = FindMode(modechar, type);
+ 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 = parameter.substr(0, 250);
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);
ModeType type = targetchannel ? MODETYPE_CHANNEL : MODETYPE_USER;
LastParse.clear();
- LastParseParams.clear();
- LastParseTranslate.clear();
+ LastChangeList.clear();
if ((!targetchannel) && ((!targetuser) || (IS_SERVER(targetuser))))
{
return;
}
+ // Populate a temporary Modes::ChangeList with the parameters
+ Modes::ChangeList changelist;
+ ModeParamsToChangeList(user, type, parameters, changelist);
+
ModResult MOD_RESULT;
FIRST_MOD_RESULT(OnPreMode, MOD_RESULT, (user, targetuser, targetchannel, parameters));
- bool SkipAccessChecks = false;
+ if (IS_LOCAL(user))
+ {
+ if (MOD_RESULT == MOD_RES_PASSTHRU)
+ {
+ if ((targetuser) && (user != targetuser))
+ {
+ // Local users may only change the modes of other users if a module explicitly allows it
+ user->WriteNumeric(ERR_USERSDONTMATCH, ":Can't change mode for other users");
+ return;
+ }
- if (!IS_LOCAL(user) || MOD_RESULT == MOD_RES_ALLOW)
- SkipAccessChecks = true;
- else if (MOD_RESULT == MOD_RES_DENY)
- return;
+ // This is a mode change by a local user and modules didn't explicitly allow/deny.
+ // Ensure access checks will happen for each mode being changed.
+ flags |= MODE_CHECKACCESS;
+ }
+ else if (MOD_RESULT == MOD_RES_DENY)
+ return; // Entire mode change denied by a module
+ }
+
+ ProcessSingle(user, targetchannel, targetuser, changelist, flags);
- if (targetuser && !SkipAccessChecks && user != targetuser)
+ if ((LastParse.empty()) && (targetchannel) && (parameters.size() == 2))
{
- user->WriteNumeric(ERR_USERSDONTMATCH, ":Can't change mode for other users");
- return;
+ /* Special case for displaying the list for listmodes,
+ * e.g. MODE #chan b, or MODE #chan +b without a parameter
+ */
+ this->DisplayListModes(user, targetchannel, parameters[1]);
}
+}
- std::string mode_sequence = parameters[1];
-
- std::string output_mode;
- std::ostringstream output_parameters;
- LastParseParams.push_back(output_mode);
- LastParseTranslate.push_back(TR_TEXT);
+void ModeParser::ModeParamsToChangeList(User* user, ModeType type, const std::vector<std::string>& parameters, Modes::ChangeList& changelist)
+{
+ const std::string& mode_sequence = parameters[1];
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++)
}
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)
- {
+ if (mh->GetNumParams(adding) && param_at < parameters.size())
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))
+
+ changelist.push(mh, adding, parameter);
+ }
+}
+
+static bool IsModeParamValid(User* user, Channel* targetchannel, User* targetuser, const Modes::Change& item)
+{
+ // An empty parameter is never acceptable
+ if (item.param.empty())
+ {
+ item.mh->OnParameterMissing(user, targetuser, targetchannel);
+ return false;
+ }
+
+ // The parameter cannot begin with a ':' character or contain a space
+ if ((item.param[0] == ':') || (item.param.find(' ') != std::string::npos))
+ return false;
+
+ return true;
+}
+
+// Returns true if we should apply a merged mode, false if we should skip it
+static bool ShouldApplyMergedMode(Channel* chan, Modes::Change& item)
+{
+ ModeHandler* mh = item.mh;
+ if ((!chan) || (!chan->IsModeSet(mh)) || (mh->IsListMode()))
+ // Mode not set here or merge is not applicable, apply the incoming mode
+ return true;
+
+ // Mode handler decides
+ std::string ours = chan->GetModeParameter(mh);
+ return mh->ResolveModeConflict(item.param, ours, chan);
+}
+
+void ModeParser::Process(User* user, Channel* targetchannel, User* targetuser, Modes::ChangeList& changelist, ModeProcessFlag flags)
+{
+ // Call ProcessSingle until the entire list is processed, but at least once to ensure
+ // LastParse and LastChangeList are cleared
+ unsigned int processed = 0;
+ do
+ {
+ unsigned int n = ProcessSingle(user, targetchannel, targetuser, changelist, flags, processed);
+ processed += n;
+ }
+ while (processed < changelist.size());
+}
+
+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;
- if ((flags & MODE_MERGE) && targetchannel && targetchannel->IsModeSet(mh) && !mh->IsListMode())
- {
- std::string ours = targetchannel->GetModeParameter(mh);
- if (!mh->ResolveModeConflict(parameter, ours, targetchannel))
- /* we won the mode merge, don't apply this mode */
- continue;
- }
}
- ModeAction ma = TryMode(user, targetuser, targetchannel, adding, modechar, parameter, SkipAccessChecks);
+ ModeAction ma = TryMode(user, targetuser, targetchannel, item, (!(flags & MODE_CHECKACCESS)));
if (ma != MODEACTION_ALLOW)
continue;
- char needed_pm = adding ? '+' : '-';
+ char needed_pm = item.adding ? '+' : '-';
if (needed_pm != output_pm)
{
output_pm = needed_pm;
output_mode.append(1, output_pm);
}
- output_mode.append(1, modechar);
+ output_mode.push_back(mh->GetModeChar());
- if (pcnt)
+ if (!item.param.empty())
{
- output_parameters << " " << parameter;
- LastParseParams.push_back(parameter);
- LastParseTranslate.push_back(mh->GetTranslateType());
+ output_parameters.push_back(' ');
+ output_parameters.append(item.param);
}
+ LastChangeList.push(mh, item.adding, item.param);
- if ( (output_mode.length() + output_parameters.str().length() > 450)
+ if ((output_mode.length() + output_parameters.length() > 450)
|| (output_mode.length() > 100)
- || (LastParseParams.size() > ServerInstance->Config->Limits.MaxModes))
+ || (LastChangeList.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 (!(flags & MODE_LOCALONLY))
- ServerInstance->PI->SendMode(user, targetuser, targetchannel, LastParseParams, LastParseTranslate);
+ LastParse.append(output_parameters);
if (targetchannel)
targetchannel->WriteChannel(user, "MODE " + LastParse);
else
targetuser->WriteFrom(user, "MODE " + LastParse);
- FOREACH_MOD(OnMode, (user, targetuser, targetchannel, 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);
+ FOREACH_MOD(OnMode, (user, targetuser, targetchannel, LastChangeList, flags, output_mode));
}
+
+ return modes_processed;
}
-void ModeParser::DisplayListModes(User* user, Channel* chan, std::string &mode_sequence)
+void ModeParser::DisplayListModes(User* user, Channel* chan, const std::string& mode_sequence)
{
seq++;
Channel* chan = i->second;
++i;
- irc::modestacker stack(false);
- mh->RemoveMode(chan, stack);
-
- std::vector<std::string> stackresult;
- stackresult.push_back(chan->name);
- while (stack.GetStackedLine(stackresult))
- {
- this->Process(stackresult, ServerInstance->FakeClient, MODE_LOCALONLY);
- stackresult.erase(stackresult.begin() + 1, stackresult.end());
- }
+ Modes::ChangeList changelist;
+ mh->RemoveMode(chan, changelist);
+ this->Process(ServerInstance->FakeClient, chan, NULL, changelist, MODE_LOCALONLY);
}
}
break;
// Remove the mode if it's set on the user
if (user->IsModeSet(this->GetModeChar()))
{
- std::vector<std::string> parameters;
- parameters.push_back(user->nick);
- parameters.push_back("-");
- parameters[1].push_back(this->GetModeChar());
- ServerInstance->Modes->Process(parameters, ServerInstance->FakeClient, ModeParser::MODE_LOCALONLY);
+ Modes::ChangeList changelist;
+ changelist.push_remove(this);
+ ServerInstance->Modes->Process(ServerInstance->FakeClient, NULL, user, changelist, ModeParser::MODE_LOCALONLY);
}
}
-void ModeHandler::RemoveMode(Channel* channel, irc::modestacker& stack)
+void ModeHandler::RemoveMode(Channel* channel, Modes::ChangeList& changelist)
{
if (channel->IsModeSet(this))
{
if (this->GetNumParams(false))
// Removing this mode requires a parameter
- stack.Push(this->GetModeChar(), channel->GetModeParameter(this));
+ changelist.push_remove(this, channel->GetModeParameter(this));
else
- stack.Push(this->GetModeChar());
+ changelist.push_remove(this);
}
}
-void PrefixMode::RemoveMode(Channel* chan, irc::modestacker& stack)
+void PrefixMode::RemoveMode(Channel* chan, Modes::ChangeList& changelist)
{
const Channel::MemberMap& userlist = chan->GetUsers();
for (Channel::MemberMap::const_iterator i = userlist.begin(); i != userlist.end(); ++i)
{
if (i->second->hasMode(this->GetModeChar()))
- stack.Push(this->GetModeChar(), i->first->nick);
+ changelist.push_remove(this, i->first->nick);
}
}
projects / user / henk / code / inspircd.git / blobdiff