From b70bef06e7a8a985a15a730c7cadba2403c09d29 Mon Sep 17 00:00:00 2001
From: aquanight <aquanight@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Fri, 5 Sep 2008 18:53:07 +0000
Subject: [PATCH] Adjustments to regex creation, and add PCRE provider

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@10396 e03df62e-2008-0410-955e-edbf42e46eb7
---
 src/modules/extra/m_regex.h        |  10 ++-
 src/modules/extra/m_regex_glob.cpp |   5 +-
 src/modules/extra/m_regex_pcre.cpp | 100 +++++++++++++++++++++++++++++
 3 files changed, 112 insertions(+), 3 deletions(-)
 create mode 100644 src/modules/extra/m_regex_pcre.cpp

diff --git a/src/modules/extra/m_regex.h b/src/modules/extra/m_regex.h
index 361d54831..cffb94cbd 100644
--- a/src/modules/extra/m_regex.h
+++ b/src/modules/extra/m_regex.h
@@ -40,8 +40,10 @@ class RegexFactoryRequest : public Request
 {
 private:
 	std::string regex;
-
+	
 public:
+	Regex* result;
+
 	RegexFactoryRequest(Module* Me, Module* Target, const std::string& rx) : Request(Me, Target, "REGEX"), regex(rx)
 	{
 	}
@@ -50,6 +52,12 @@ public:
 	{
 		return regex;
 	}
+
+	Regex* Create()
+	{
+		Send();
+		return this->result;
+	}
 };
 
 class RegexNameRequest : public Request
diff --git a/src/modules/extra/m_regex_glob.cpp b/src/modules/extra/m_regex_glob.cpp
index 8d81b9a03..7977c77f1 100644
--- a/src/modules/extra/m_regex_glob.cpp
+++ b/src/modules/extra/m_regex_glob.cpp
@@ -59,8 +59,9 @@ public:
 		{
 			RegexFactoryRequest* rfr = (RegexFactoryRequest*)request;
 			std::string rx = rfr->GetRegex();
-			Regex* rxo = (Regex*)new GlobRegex(rx, ServerInstance); // Cast to base class first, since theoretically the pointer could change by that.
-			return (const char*)(rxo);
+			rfr->result = (Regex*)new GlobRegex(rx, ServerInstance);
+			return "OK";
 		}
+		return NULL;
 	}
 };
diff --git a/src/modules/extra/m_regex_pcre.cpp b/src/modules/extra/m_regex_pcre.cpp
new file mode 100644
index 000000000..aea4cbbb6
--- /dev/null
+++ b/src/modules/extra/m_regex_pcre.cpp
@@ -0,0 +1,100 @@
+/*       +------------------------------------+
+ *       | Inspire Internet Relay Chat Daemon |
+ *       +------------------------------------+
+ *
+ *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
+ * This program is free but copyrighted software; see
+ *            the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "inspircd.h"
+#include <pcre.h>
+#include "m_regex.h"
+
+/* $ModDesc: Regex Provider Module for PCRE */
+/* $ModDep: m_regex.h */
+/* $CompileFlags: exec("pcre-config --cflags") */
+/* $LinkerFlags: exec("pcre-config --libs") rpath("pcre-config --libs") -lpcre */
+
+#ifdef WINDOWS
+#pragma comment(lib, "pcre.lib")
+#endif
+
+class PCREException : public ModuleException
+{
+public:
+	PCREException(const std::string& rx, const std::string& error, int erroffset)
+		: ModuleException(std::string("Error in regex ") + rx + " at offset " + ConvToStr(erroffset) + ": " + error)
+	{
+	}
+};
+
+class PCRERegex : public Regex
+{
+private:
+	pcre* regex;
+
+public:
+	PCRERegex(const std::string& rx, InspIRCd* Me) : Regex(rx, Me)
+	{
+		const char* error;
+		int erroffset;
+		regex = pcre_compile(rx.c_str(), 0, &error, &erroffset, NULL);
+		if (!regex)
+		{
+			Me->Logs->Log("REGEX", DEBUG, "pcre_compile failed: /%s/ [%d] %s", rx.c_str(), erroffset, error);
+			throw PCREException(rx, error, erroffset);
+		}
+	}
+
+	virtual ~PCRERegex()
+	{
+		pcre_free(regex);
+	}
+
+	virtual bool Matches(const std::string& text)
+	{
+		if (pcre_exec(regex, NULL, text.c_str(), text.length(), 0, 0, NULL, 0) > -1)
+		{
+			// Bang. :D
+			return true;
+		}
+		return false;
+	}
+};
+
+class ModuleRegexPCRE : public Module
+{
+public:
+	ModuleRegexPCRE(InspIRCd* Me) : Module(Me)
+	{
+		Me->Modules->PublishInterface("RegularExpression", this);
+		Implementation eventlist[] = { I_OnRequest };
+		Me->Modules->Attach(eventlist, this, 1);
+	}
+
+	virtual ~ModuleRegexPCRE()
+	{
+		ServerInstance->Modules->UnpublishInterface("RegularExpression", this);
+	}
+
+	virtual const char* OnRequest(Request* request)
+	{
+		if (strcmp("REGEX-NAME", request->GetId()) == 0)
+		{
+			return "pcre";
+		}
+		else if (strcmp("REGEX", request->GetId()) == 0)
+		{
+			RegexFactoryRequest* rfr = (RegexFactoryRequest*)request;
+			std::string rx = rfr->GetRegex();
+			rfr->result = new PCRERegex(rx, ServerInstance);
+			return "OK";
+		}
+		return NULL;
+	}
+};
-- 
2.39.2