From bbc15441cdefa0ed20f70bb1a0a78cf09010a4fd Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Sat, 14 Nov 2020 21:39:53 -0500
Subject: [PATCH] regaddralias added

---
 Makefile         |  7 +++-
 regaddralias.cpp | 95 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 100 insertions(+), 2 deletions(-)
 create mode 100644 regaddralias.cpp

diff --git a/Makefile b/Makefile
index 84743bf..57e36cf 100644
--- a/Makefile
+++ b/Makefile
@@ -44,7 +44,7 @@ OBJECTS = $(SOURCES:.cpp=.o)
 I2PD_LIB = libi2pd.a
 
 
-all: keygen keyinfo famtool routerinfo regaddr regaddr_3ld vain i2pbase64 offlinekeys b33address
+all: keygen keyinfo famtool routerinfo regaddr regaddr_3ld vain i2pbase64 offlinekeys b33address regaddralias
 
 routerinfo: $(OBJECTS)
 	$(CXX) -o routerinfo routerinfo.o $(LDFLAGS)  $(LIBS)
@@ -76,6 +76,9 @@ offlinekeys: $(OBJECTS)
 b33address: $(OBJECTS)
 	$(CXX) -o b33address b33address.o $(LDFLAGS) $(LIBS)
 
+regaddralias: $(OBJECTS)
+	$(CXX) -o regaddralias regaddralias.o $(LDFLAGS) $(LIBS)
+
 $(OBJECTS): libi2pd.a
 
 .SUFFIXES:
@@ -97,7 +100,7 @@ clean-obj:
 	rm -f $(OBJECTS)
 
 clean-bin:
-	rm -f keyinfo keygen famtool regaddr regaddr_3ld routerinfo i2pbase64 vain offlinekeys b33address
+	rm -f keyinfo keygen famtool regaddr regaddr_3ld routerinfo i2pbase64 vain offlinekeys b33address changeaddr
 
 
 clean: clean-i2pd clean-obj clean-bin
diff --git a/regaddralias.cpp b/regaddralias.cpp
new file mode 100644
index 0000000..40d2cbb
--- /dev/null
+++ b/regaddralias.cpp
@@ -0,0 +1,95 @@
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include "Identity.h"
+#include "Base.h"
+
+int main (int argc, char * argv[])
+{
+	if (argc < 3)
+	{
+		std::cout << "Usage: regaddralias oldfilename newfilename address" << std::endl;
+		return -1;
+	}
+
+	i2p::crypto::InitCrypto (false, true, true, false);	
+
+	i2p::data::PrivateKeys oldkeys, newkeys;
+	{
+		std::ifstream s(argv[1], std::ifstream::binary);
+		if (s.is_open ())	
+		{	
+			s.seekg (0, std::ios::end);
+			size_t len = s.tellg();
+			s.seekg (0, std::ios::beg);
+			uint8_t * buf = new uint8_t[len];
+			s.read ((char *)buf, len);
+			if(!oldkeys.FromBuffer (buf, len))
+			{
+				std::cout << "Failed to load keyfile " << argv[1] << std::endl;	
+				return -1;
+			}
+			delete[] buf;
+		}	
+		else
+		{
+			std::cout << "Cab't open keyfile " << argv[1] << std::endl;	
+			return -1;	
+		}
+	}
+
+	{
+		std::ifstream s(argv[2], std::ifstream::binary);
+		if (s.is_open ())	
+		{	
+			s.seekg (0, std::ios::end);
+			size_t len = s.tellg();
+			s.seekg (0, std::ios::beg);
+			uint8_t * buf = new uint8_t[len];
+			s.read ((char *)buf, len);
+			if(!newkeys.FromBuffer (buf, len))
+			{
+				std::cout << "Failed to load keyfile " << argv[2] << std::endl;	
+				return -1;
+			}
+			delete[] buf;
+		}		
+		else
+		{
+			std::cout << "Cab't open keyfile " << argv[2] << std::endl;	
+			return -1;
+		}
+	}
+
+	std::stringstream out;
+	out << argv[3] << "="; // address
+	out << newkeys.GetPublic ()->ToBase64 ();
+	out << "#!action=adddest#olddest=";
+	out << oldkeys.GetPublic ()->ToBase64 ();
+
+	auto oldSignatureLen = oldkeys.GetPublic ()->GetSignatureLen ();
+	uint8_t * oldSignature = new uint8_t[oldSignatureLen];
+	char * oldSig = new char[oldSignatureLen*2];	
+	oldkeys.Sign ((uint8_t *)out.str ().c_str (), out.str ().length (), oldSignature);
+	auto len = i2p::data::ByteStreamToBase64 (oldSignature, oldSignatureLen, oldSig, oldSignatureLen*2);
+	oldSig[len] = 0;
+	out << "#oldsig=" << oldSig;
+	delete[] oldSignature;
+	delete[] oldSig;
+
+	auto signatureLen = newkeys.GetPublic ()->GetSignatureLen ();
+	uint8_t * signature = new uint8_t[signatureLen];
+	char * sig = new char[signatureLen*2];	
+	newkeys.Sign ((uint8_t *)out.str ().c_str (), out.str ().length (), signature);
+	len = i2p::data::ByteStreamToBase64 (signature, signatureLen, sig, signatureLen*2);
+	sig[len] = 0;
+	out << "#sig=" << sig;
+	delete[] signature;
+	delete[] sig;
+
+	std::cout << out.str () << std::endl;	
+
+	i2p::crypto::TerminateCrypto ();
+
+	return 0;
+}