From 1328556e3690aa7a6c6003373221c4cc914c1d4d Mon Sep 17 00:00:00 2001
From: brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Sun, 19 Feb 2006 15:21:51 +0000
Subject: Server::AddExtendedMode and Server::AddCommand will now throw
 exceptions when adding a bad mode or already existing command. If the module
 constructor does not handle this exception, this will abort the module's
 constructor, forbidding loading of modules which are unable to function
 (smart eh)

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@3246 e03df62e-2008-0410-955e-edbf42e46eb7
---
 src/command_parse.cpp               | 10 +++++++---
 src/modules.cpp                     | 18 +++++++++++++-----
 src/modules/extra/m_filter_pcre.cpp |  2 +-
 src/modules/m_helpop.cpp            |  2 +-
 src/modules/m_randquote.cpp         | 20 ++++++++++++++++----
 5 files changed, 38 insertions(+), 14 deletions(-)

diff --git a/src/command_parse.cpp b/src/command_parse.cpp
index 7c9e5aa5c..e735ad828 100644
--- a/src/command_parse.cpp
+++ b/src/command_parse.cpp
@@ -742,9 +742,13 @@ void CommandParser::ProcessBuffer(const char* cmdbuf,userrec *user)
 bool CommandParser::CreateCommand(command_t *f)
 {
 	/* create the command and push it onto the table */
-	cmdlist[f->command] = f;
-	log(DEBUG,"Added command %s (%lu parameters)",f->command.c_str(),(unsigned long)f->min_params);
-	return true;
+	if (cmdlist.find(f->command) != cmdlist.end())
+	{
+		cmdlist[f->command] = f;
+		log(DEBUG,"Added command %s (%lu parameters)",f->command.c_str(),(unsigned long)f->min_params);
+		return true;
+	}
+	else return false
 }
 
 CommandParser::CommandParser()
diff --git a/src/modules.cpp b/src/modules.cpp
index b1ac75f8f..fa1c9e7bd 100644
--- a/src/modules.cpp
+++ b/src/modules.cpp
@@ -475,7 +475,11 @@ void Server::Log(int level, std::string s)
 
 void Server::AddCommand(command_t *f)
 {
-	ServerInstance->Parser->CreateCommand(f);
+	if (!ServerInstance->Parser->CreateCommand(f))
+	{
+		ModuleException err("Command "+std::string(f->command)+" already exists.");
+		throw (err);
+	}
 }
 
 void Server::SendMode(char **parameters, int pcnt, userrec *user)
@@ -619,24 +623,28 @@ bool Server::AddExtendedMode(char modechar, int type, bool requires_oper, int pa
 	{
 		if (type == MT_SERVER)
 		{
-			log(DEBUG,"*** API ERROR *** Modes of type MT_SERVER are reserved for future expansion");
+			ModuleException e("Modes of type MT_SERVER are reserved for future expansion");
+			throw(e);
 			return false;
 		}
 		if (((params_when_on>0) || (params_when_off>0)) && (type == MT_CLIENT))
 		{
-			log(DEBUG,"*** API ERROR *** Parameters on MT_CLIENT modes are not supported");
+			ModuleException e("Parameters on MT_CLIENT modes are not supported");
+			throw(e);
 			return false;
 		}
 		if ((params_when_on>1) || (params_when_off>1))
 		{
-			log(DEBUG,"*** API ERROR *** More than one parameter for an MT_CHANNEL mode is not yet supported");
+			ModuleException e("More than one parameter for an MT_CHANNEL mode is not yet supported");
+			throw(e);
 			return false;
 		}
 		return DoAddExtendedMode(modechar,type,requires_oper,params_when_on,params_when_off);
 	}
 	else
 	{
-		log(DEBUG,"*** API ERROR *** Muppet modechar detected.");
+		ModuleException e("Muppet modechar detected.");
+		throw(e);
 	}
 	return false;
 }
diff --git a/src/modules/extra/m_filter_pcre.cpp b/src/modules/extra/m_filter_pcre.cpp
index fe3d721d4..638c1bd24 100644
--- a/src/modules/extra/m_filter_pcre.cpp
+++ b/src/modules/extra/m_filter_pcre.cpp
@@ -28,7 +28,7 @@ using namespace std;
 #include "modules.h"
 #include "helperfuncs.h"
 
-class FilterPCREException
+class FilterPCREException : public ModuleException
 {
  public:
 	virtual char* GetReason()
diff --git a/src/modules/m_helpop.cpp b/src/modules/m_helpop.cpp
index 3272b3580..b3b3d113a 100644
--- a/src/modules/m_helpop.cpp
+++ b/src/modules/m_helpop.cpp
@@ -160,7 +160,7 @@ void sendtohelpop(userrec *src, int pcnt, char **params)
 	Srv->SendToModeMask("oh",WM_AND,line);
 }
 
-class HelpopException
+class HelpopException : public ModuleException
 {
  private:
 	std::string err;
diff --git a/src/modules/m_randquote.cpp b/src/modules/m_randquote.cpp
index 08de8876d..8ee07f242 100644
--- a/src/modules/m_randquote.cpp
+++ b/src/modules/m_randquote.cpp
@@ -62,6 +62,18 @@ class cmd_randquote : public command_t
 	}
 };
 
+class RandquoteException : public ModuleException
+{
+ private:
+	std::string err;
+ public:
+	RandquoteException(std::string message) : err(message) { }
+
+	virtual char* GetReason()
+	{
+		return (char*)err.c_str();
+	}
+}
 
 class ModuleRandQuote : public Module
 {
@@ -85,15 +97,15 @@ class ModuleRandQuote : public Module
 
 		if (q_file == "")
 		{
-			log(DEFAULT,"m_randquote: Quotefile not specified - Please check your config.");
-			return;
+			RandquoteException e("m_randquote: Quotefile not specified - Please check your config.");
+			throw(e);
                 }
 
 		quotes = new FileReader(q_file);
 		if(!quotes->Exists())
 		{
-			log(DEFAULT,"m_randquote: QuoteFile not Found!! Please check your config - module will not function.");
-			return;
+			RandquoteException e("m_randquote: QuoteFile not Found!! Please check your config - module will not function.");
+			throw(e);
 		}
 		else
 		{
-- 
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