X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=include%2Fconvto.h;h=9bad62b93d0894782aaa02a649c020a9e234173c;hb=d3d4c7cf5c2ccb0169aa62d839479f22984437d9;hp=eaf14f6dc549972faa951fe437b58123e78148bc;hpb=b9e11915a976daaf790ebc763aff56e19fd49e0f;p=user%2Fhenk%2Fcode%2Finspircd.git

diff --git a/include/convto.h b/include/convto.h
index eaf14f6dc..9bad62b93 100644
--- a/include/convto.h
+++ b/include/convto.h
@@ -1,8 +1,9 @@
 /*
  * InspIRCd -- Internet Relay Chat Daemon
  *
- *   Copyright (C) 2014 Attila Molnar <attilamolnar@hush.com>
- *   Copyright (C) 2006 Craig Edwards <craigedwards@brainbox.cc>
+ *   Copyright (C) 2020 Matt Schatz <genius3000@g3k.solutions>
+ *   Copyright (C) 2017-2019 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2016 Attila Molnar <attilamolnar@hush.com>
  *
  * This file is part of InspIRCd.  InspIRCd is free software: you can
  * redistribute it and/or modify it under the terms of the GNU General Public
@@ -89,22 +90,29 @@ template <class T> inline std::string ConvToStr(const T& in)
 	return tmp.str();
 }
 
-/** Template function to convert any input type to any other type
- * (usually an integer or numeric type)
+/** Template function to convert a std::string to any numeric type.
  */
-template<typename T> inline long ConvToInt(const T& in)
+template<typename TOut> inline TOut ConvToNum(const std::string& in)
 {
-	std::stringstream tmp;
-	if (!(tmp << in))
-		return 0;
-	return atol(tmp.str().c_str());
-}
-
-inline uint64_t ConvToUInt64(const std::string& in)
-{
-	uint64_t ret;
+	TOut ret;
 	std::istringstream tmp(in);
 	if (!(tmp >> ret))
 		return 0;
 	return ret;
 }
+
+template<> inline char ConvToNum<char>(const std::string& in)
+{
+	// We specialise ConvToNum for char to avoid istringstream treating
+	// the input as a character literal.
+	int16_t num = ConvToNum<int16_t>(in);
+	return num >= INT8_MIN && num <= INT8_MAX ? num : 0;
+}
+
+template<> inline unsigned char ConvToNum<unsigned char>(const std::string& in)
+{
+	// We specialise ConvToNum for unsigned char to avoid istringstream
+	// treating the input as a character literal.
+	uint16_t num = ConvToNum<uint16_t>(in);
+	return num <= UINT8_MAX ? num : 0;
+}