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-rw-r--r--src/modules/m_spanningtree/commands.h11
-rw-r--r--src/modules/m_spanningtree/fjoin.cpp251
2 files changed, 128 insertions, 134 deletions
diff --git a/src/modules/m_spanningtree/commands.h b/src/modules/m_spanningtree/commands.h
index 1bca63564..c7dc08b59 100644
--- a/src/modules/m_spanningtree/commands.h
+++ b/src/modules/m_spanningtree/commands.h
@@ -83,16 +83,19 @@ class CommandOpertype : public Command
CmdResult Handle (const std::vector<std::string>& parameters, User *user);
RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters) { return ROUTE_BROADCAST; }
};
+class TreeSocket;
class CommandFJoin : public Command
{
+ /** Remove all modes from a channel, including statusmodes (+qaovh etc), simplemodes, parameter modes.
+ * This does not update the timestamp of the target channel, this must be done seperately.
+ */
+ static void RemoveStatus(Channel* c);
+ static void ApplyModeStack(User* srcuser, Channel* c, irc::modestacker& stack);
+ bool ProcessModeUUIDPair(const std::string& item, TreeSocket* src_socket, Channel* chan, irc::modestacker* modestack);
public:
CommandFJoin(Module* Creator) : Command(Creator, "FJOIN", 3) { flags_needed = FLAG_SERVERONLY; }
CmdResult Handle (const std::vector<std::string>& parameters, User *user);
RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters) { return ROUTE_BROADCAST; }
- /** Remove all modes from a channel, including statusmodes (+qaovh etc), simplemodes, parameter modes.
- * This does not update the timestamp of the target channel, this must be done seperately.
- */
- void RemoveStatus(User* source, parameterlist &params);
};
class CommandFMode : public Command
{
diff --git a/src/modules/m_spanningtree/fjoin.cpp b/src/modules/m_spanningtree/fjoin.cpp
index 29ee9244c..be13f5318 100644
--- a/src/modules/m_spanningtree/fjoin.cpp
+++ b/src/modules/m_spanningtree/fjoin.cpp
@@ -29,7 +29,7 @@
CmdResult CommandFJoin::Handle(const std::vector<std::string>& params, User *srcuser)
{
SpanningTreeUtilities* Utils = ((ModuleSpanningTree*)(Module*)creator)->Utils;
- /* 1.1 FJOIN works as follows:
+ /* 1.1+ FJOIN works as follows:
*
* Each FJOIN is sent along with a timestamp, and the side with the lowest
* timestamp 'wins'. From this point on we will refer to this side as the
@@ -54,20 +54,23 @@ CmdResult CommandFJoin::Handle(const std::vector<std::string>& params, User *src
* The winning side on the other hand will ignore all user modes from the
* losing side, so only its own modes get applied. Life is simple for those
* who succeed at internets. :-)
+ *
+ * Syntax:
+ * :<sid> FJOIN <chan> <TS> <modes> :[[modes,]<uuid> [[modes,]<uuid> ... ]]
+ * The last parameter is a list consisting of zero or more (modelist, uuid)
+ * pairs (permanent channels may have zero users). The mode list for each
+ * user is a concatenation of the mode letters the user has on the channel
+ * (e.g.: "ov" if the user is opped and voiced). The order of the mode letters
+ * are not important but if a server ecounters an unknown mode letter, it will
+ * drop the link to avoid desync.
+ *
+ * InspIRCd 2.0 and older required a comma before the uuid even if the user
+ * had no prefix modes on the channel, InspIRCd 2.2 and later does not require
+ * a comma in this case anymore.
+ *
*/
- irc::modestacker modestack(true); /* Modes to apply from the users in the user list */
- User* who = NULL; /* User we are currently checking */
- std::string channel = params[0]; /* Channel name, as a string */
- time_t TS = atoi(params[1].c_str()); /* Timestamp given to us for remote side */
- irc::tokenstream users((params.size() > 3) ? params[params.size() - 1] : ""); /* users from the user list */
- bool apply_other_sides_modes = true; /* True if we are accepting the other side's modes */
- Channel* chan = ServerInstance->FindChan(channel); /* The channel we're sending joins to */
- bool created = !chan; /* True if the channel doesnt exist here yet */
- std::string item; /* One item in the list of nicks */
-
- TreeSocket* src_socket = Utils->FindServer(srcuser->server)->GetRoute()->GetSocket();
-
+ time_t TS = ConvToInt(params[1]);
if (!TS)
{
ServerInstance->Logs->Log("m_spanningtree",LOG_DEFAULT,"*** BUG? *** TS of 0 sent to FJOIN. Are some services authors smoking craq, or is it 1970 again?. Dropped.");
@@ -75,163 +78,151 @@ CmdResult CommandFJoin::Handle(const std::vector<std::string>& params, User *src
return CMD_INVALID;
}
- if (created)
+ const std::string& channel = params[0];
+ Channel* chan = ServerInstance->FindChan(channel);
+ bool apply_other_sides_modes = true;
+
+ if (!chan)
{
chan = new Channel(channel, TS);
- ServerInstance->SNO->WriteToSnoMask('d', "Creation FJOIN received for %s, timestamp: %lu", chan->name.c_str(), (unsigned long)TS);
}
else
{
time_t ourTS = chan->age;
-
if (TS != ourTS)
+ {
ServerInstance->SNO->WriteToSnoMask('d', "Merge FJOIN received for %s, ourTS: %lu, TS: %lu, difference: %lu",
chan->name.c_str(), (unsigned long)ourTS, (unsigned long)TS, (unsigned long)(ourTS - TS));
- /* If our TS is less than theirs, we dont accept their modes */
- if (ourTS < TS)
- {
- ServerInstance->SNO->WriteToSnoMask('d', "NOT Applying modes from other side");
- apply_other_sides_modes = false;
- }
- else if (ourTS > TS)
- {
- /* Our TS greater than theirs, clear all our modes from the channel, accept theirs. */
- ServerInstance->SNO->WriteToSnoMask('d', "Removing our modes, accepting remote");
- parameterlist param_list;
- if (Utils->AnnounceTSChange)
- chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :TS for %s changed from %lu to %lu", chan->name.c_str(), channel.c_str(), (unsigned long) ourTS, (unsigned long) TS);
- // while the name is equal in case-insensitive compare, it might differ in case; use the remote version
- chan->name = channel;
- chan->age = TS;
- chan->ClearInvites();
- param_list.push_back(channel);
- this->RemoveStatus(ServerInstance->FakeClient, param_list);
-
- // XXX: If the channel does not exist in the chan hash at this point, create it so the remote modes can be applied on it.
- // This happens to 0-user permanent channels on the losing side, because those are removed (from the chan hash, then
- // deleted later) as soon as the permchan mode is removed from them.
- if (ServerInstance->FindChan(channel) == NULL)
+ /* If our TS is less than theirs, we dont accept their modes */
+ if (ourTS < TS)
{
- chan = new Channel(channel, TS);
+ apply_other_sides_modes = false;
+ }
+ else if (ourTS > TS)
+ {
+ /* Our TS greater than theirs, clear all our modes from the channel, accept theirs. */
+ if (Utils->AnnounceTSChange)
+ chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :TS for %s changed from %lu to %lu", chan->name.c_str(), channel.c_str(), (unsigned long) ourTS, (unsigned long) TS);
+
+ // while the name is equal in case-insensitive compare, it might differ in case; use the remote version
+ chan->name = channel;
+ chan->age = TS;
+ chan->ClearInvites();
+
+ CommandFJoin::RemoveStatus(chan);
+
+ // XXX: If the channel does not exist in the chan hash at this point, create it so the remote modes can be applied on it.
+ // This happens to 0-user permanent channels on the losing side, because those are removed (from the chan hash, then
+ // deleted later) as soon as the permchan mode is removed from them.
+ if (ServerInstance->FindChan(channel) == NULL)
+ {
+ chan = new Channel(channel, TS);
+ }
}
}
- // The silent case here is ourTS == TS, we don't need to remove modes here, just to merge them later on.
}
- /* First up, apply their modes if they won the TS war */
+ /* First up, apply their channel modes if they won the TS war */
if (apply_other_sides_modes)
{
- unsigned int idx = 2;
std::vector<std::string> modelist;
+ modelist.push_back(channel);
- // Mode parser needs to know what channel to act on.
- modelist.push_back(params[0]);
-
- /* Remember, params[params.size() - 1] is nicklist, and we don't want to apply *that* */
- for (idx = 2; idx != (params.size() - 1); idx++)
- {
- modelist.push_back(params[idx]);
- }
-
+ /* Remember, params[params.size() - 1] is userlist, and we don't want to apply *that* */
+ modelist.insert(modelist.end(), params.begin()+2, params.end()-1);
ServerInstance->SendMode(modelist, srcuser);
}
- /* Now, process every 'modes,nick' pair */
+ irc::modestacker modestack(true);
+ TreeSocket* src_socket = Utils->FindServer(srcuser->server)->GetRoute()->GetSocket();
+
+ /* Now, process every 'modes,uuid' pair */
+ irc::tokenstream users(*params.rbegin());
+ std::string item;
+ irc::modestacker* modestackptr = (apply_other_sides_modes ? &modestack : NULL);
while (users.GetToken(item))
{
- const char* usr = item.c_str();
- if (usr && *usr)
- {
- const char* unparsedmodes = usr;
- std::string modes;
-
-
- /* Iterate through all modes for this user and check they are valid. */
- while ((*unparsedmodes) && (*unparsedmodes != ','))
- {
- ModeHandler *mh = ServerInstance->Modes->FindMode(*unparsedmodes, MODETYPE_CHANNEL);
- if (!mh)
- {
- ServerInstance->Logs->Log("m_spanningtree", LOG_SPARSE, "Unrecognised mode %c, dropping link", *unparsedmodes);
- return CMD_INVALID;
- }
-
- modes += *unparsedmodes;
- usr++;
- unparsedmodes++;
- }
+ if (!ProcessModeUUIDPair(item, src_socket, chan, modestackptr))
+ return CMD_INVALID;
+ }
- /* Advance past the comma, to the nick */
- usr++;
+ /* Flush mode stacker if we lost the FJOIN or had equal TS */
+ if (apply_other_sides_modes)
+ CommandFJoin::ApplyModeStack(srcuser, chan, modestack);
- /* Check the user actually exists */
- who = ServerInstance->FindUUID(usr);
- if (who)
- {
- /* Check that the user's 'direction' is correct */
- TreeServer* route_back_again = Utils->BestRouteTo(who->server);
- if ((!route_back_again) || (route_back_again->GetSocket() != src_socket))
- continue;
+ return CMD_SUCCESS;
+}
- /* Add any modes this user had to the mode stack */
- for (std::string::iterator x = modes.begin(); x != modes.end(); ++x)
- modestack.Push(*x, who->nick);
+bool CommandFJoin::ProcessModeUUIDPair(const std::string& item, TreeSocket* src_socket, Channel* chan, irc::modestacker* modestack)
+{
+ std::string::size_type comma = item.find(',');
- Channel::JoinUser(who, channel, true, "", route_back_again->bursting, TS);
- }
- else
- {
- ServerInstance->Logs->Log("m_spanningtree",LOG_SPARSE, "Ignored nonexistant user %s in fjoin to %s (probably quit?)", usr, channel.c_str());
- continue;
- }
- }
+ // Comma not required anymore if the user has no modes
+ std::string uuid = ((comma == std::string::npos) ? item : item.substr(comma+1));
+ User* who = ServerInstance->FindUUID(uuid);
+ if (!who)
+ {
+ // Probably KILLed, ignore
+ return true;
}
- /* Flush mode stacker if we lost the FJOIN or had equal TS */
- if (apply_other_sides_modes)
+ /* Check that the user's 'direction' is correct */
+ SpanningTreeUtilities* Utils = ((ModuleSpanningTree*)(Module*)creator)->Utils;
+ TreeServer* route_back_again = Utils->BestRouteTo(who->server);
+ if ((!route_back_again) || (route_back_again->GetSocket() != src_socket))
{
- parameterlist stackresult;
- stackresult.push_back(channel);
+ return true;
+ }
- while (modestack.GetStackedLine(stackresult))
+ /* Check if the user received at least one mode */
+ if ((modestack) && (comma > 0) && (comma != std::string::npos))
+ {
+ /* Iterate through the modes and see if they are valid here, if so, apply */
+ std::string::const_iterator commait = item.begin()+comma;
+ for (std::string::const_iterator i = item.begin(); i != commait; ++i)
{
- ServerInstance->SendMode(stackresult, srcuser);
- stackresult.erase(stackresult.begin() + 1, stackresult.end());
+ if (!ServerInstance->Modes->FindMode(*i, MODETYPE_CHANNEL))
+ {
+ ServerInstance->SNO->WriteToSnoMask('d', "Unrecognised mode '%c' for a user in FJOIN, dropping link", *i);
+ return false;
+ }
+
+ /* Add any modes this user had to the mode stack */
+ modestack->Push(*i, who->nick);
}
}
- return CMD_SUCCESS;
+
+ Channel::JoinUser(who, chan->name, true, "", route_back_again->bursting, chan->age);
+ return true;
}
-void CommandFJoin::RemoveStatus(User* srcuser, parameterlist &params)
+void CommandFJoin::RemoveStatus(Channel* c)
{
- if (params.size() < 1)
- return;
-
- Channel* c = ServerInstance->FindChan(params[0]);
+ irc::modestacker stack(false);
- if (c)
+ for (char modeletter = 'A'; modeletter <= 'z'; ++modeletter)
{
- irc::modestacker stack(false);
- parameterlist stackresult;
- stackresult.push_back(c->name);
+ ModeHandler* mh = ServerInstance->Modes->FindMode(modeletter, MODETYPE_CHANNEL);
+
+ /* Passing a pointer to a modestacker here causes the mode to be put onto the mode stack,
+ * rather than applied immediately. Module unloads require this to be done immediately,
+ * for this function we require tidyness instead. Fixes bug #493
+ */
+ if (mh)
+ mh->RemoveMode(c, &stack);
+ }
- for (char modeletter = 'A'; modeletter <= 'z'; ++modeletter)
- {
- ModeHandler* mh = ServerInstance->Modes->FindMode(modeletter, MODETYPE_CHANNEL);
-
- /* Passing a pointer to a modestacker here causes the mode to be put onto the mode stack,
- * rather than applied immediately. Module unloads require this to be done immediately,
- * for this function we require tidyness instead. Fixes bug #493
- */
- if (mh)
- mh->RemoveMode(c, &stack);
- }
+ ApplyModeStack(ServerInstance->FakeClient, c, stack);
+}
- while (stack.GetStackedLine(stackresult))
- {
- ServerInstance->SendMode(stackresult, srcuser);
- stackresult.erase(stackresult.begin() + 1, stackresult.end());
- }
+void CommandFJoin::ApplyModeStack(User* srcuser, Channel* c, irc::modestacker& stack)
+{
+ parameterlist stackresult;
+ stackresult.push_back(c->name);
+
+ while (stack.GetStackedLine(stackresult))
+ {
+ ServerInstance->SendMode(stackresult, srcuser);
+ stackresult.erase(stackresult.begin() + 1, stackresult.end());
}
}
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 12:15:46 +0000