From 685dfe016e406d09a7445e1693d2317afe25ba7a Mon Sep 17 00:00:00 2001
From: Peter Powell <petpow@saberuk.com>
Date: Tue, 3 Sep 2019 12:27:14 +0100
Subject: Add internal serialisations of the DCC allow and silence lists.

---
 src/modules/m_dccallow.cpp | 83 ++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 76 insertions(+), 7 deletions(-)

(limited to 'src/modules/m_dccallow.cpp')

diff --git a/src/modules/m_dccallow.cpp b/src/modules/m_dccallow.cpp
index e0ea4c7ae..23fc12995 100644
--- a/src/modules/m_dccallow.cpp
+++ b/src/modules/m_dccallow.cpp
@@ -98,14 +98,83 @@ typedef std::vector<DCCAllow> dccallowlist;
 dccallowlist* dl;
 typedef std::vector<BannedFileList> bannedfilelist;
 bannedfilelist bfl;
-typedef SimpleExtItem<dccallowlist> DCCAllowExt;
 
-class CommandDccallow : public Command
+class DCCAllowExt : public SimpleExtItem<dccallowlist>
 {
-	DCCAllowExt& ext;
-
  public:
 	unsigned int maxentries;
+
+	DCCAllowExt(Module* Creator)
+		: SimpleExtItem<dccallowlist>("dccallow", ExtensionItem::EXT_USER, Creator)
+	{
+	}
+
+	void FromInternal(Extensible* container, const std::string& value) CXX11_OVERRIDE
+	{
+		LocalUser* user = IS_LOCAL(static_cast<User*>(container));
+		if (!user)
+			return;
+
+		// Remove the old list and create a new one.
+		unset(user);
+		dccallowlist* list = new dccallowlist();
+
+		irc::spacesepstream ts(value);
+		while (!ts.StreamEnd())
+		{
+			// Check we have space for another entry.
+			if (list->size() >= maxentries)
+			{
+				ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Oversized DCC allow list received for %s: %s",
+					user->uuid.c_str(), value.c_str());
+				delete list;
+				return;
+			}
+
+			// Extract the fields.
+			DCCAllow dccallow;
+			if (!ts.GetToken(dccallow.nickname) ||
+				!ts.GetToken(dccallow.hostmask) ||
+				!ts.GetNumericToken(dccallow.set_on) ||
+				!ts.GetNumericToken(dccallow.length))
+			{
+				ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Malformed DCC allow list received for %s: %s",
+					user->uuid.c_str(), value.c_str());
+				delete list;
+				return;
+			}
+
+			// Store the DCC allow entry.
+			list->push_back(dccallow);
+		}
+
+	}
+
+	std::string ToInternal(const Extensible* container, void* item) const CXX11_OVERRIDE
+	{
+		dccallowlist* list = static_cast<dccallowlist*>(item);
+		std::string buf;
+		for (dccallowlist::const_iterator iter = list->begin(); iter != list->end(); ++iter)
+		{
+			if (iter != list->begin())
+				buf.push_back(' ');
+
+			buf.append(iter->nickname);
+			buf.push_back(' ');
+			buf.append(iter->hostmask);
+			buf.push_back(' ');
+			buf.append(ConvToStr(iter->set_on));
+			buf.push_back(' ');
+			buf.append(ConvToStr(iter->length));
+		}
+		return buf;
+	}
+};
+
+class CommandDccallow : public Command
+{
+ public:
+	DCCAllowExt& ext;
 	unsigned long defaultlength;
 	CommandDccallow(Module* parent, DCCAllowExt& Ext)
 		: Command(parent, "DCCALLOW", 0)
@@ -191,7 +260,7 @@ class CommandDccallow : public Command
 						ul.push_back(user);
 					}
 
-					if (dl->size() >= maxentries)
+					if (dl->size() >= ext.maxentries)
 					{
 						user->WriteNumeric(ERR_DCCALLOWINVALID, user->nick, "Too many nicks on DCCALLOW list");
 						return CMD_FAILURE;
@@ -301,7 +370,7 @@ class ModuleDCCAllow : public Module
 
  public:
 	ModuleDCCAllow()
-		: ext("dccallow", ExtensionItem::EXT_USER, this)
+		: ext(this)
 		, cmd(this, ext)
 		, blockchat(false)
 	{
@@ -521,7 +590,7 @@ class ModuleDCCAllow : public Module
 		bfl.swap(newbfl);
 
 		ConfigTag* tag = ServerInstance->Config->ConfValue("dccallow");
-		cmd.maxentries = tag->getUInt("maxentries", 20);
+		cmd.ext.maxentries = tag->getUInt("maxentries", 20);
 		cmd.defaultlength = tag->getDuration("length", 0);
 		blockchat = tag->getBool("blockchat");
 		defaultaction = tag->getString("action");
-- 
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