From: Matt Corallo <git@bluematt.me>
Date: Tue, 15 Mar 2022 03:48:47 +0000 (+0000)
Subject: Use command-line magic value
X-Git-Url: http://git.bitcoin.ninja/index.cgi?p=tunudptotcp;a=commitdiff_plain;h=e18c3c0b38c5be562f6a1e0f268fd743a058d330

Use command-line magic value
---

diff --git a/main.cpp b/main.cpp
index 2afcf4c..09802ce 100644
--- a/main.cpp
+++ b/main.cpp
@@ -260,7 +260,7 @@ static int fdr;
 static int fd[TUN_IF_COUNT];
 static struct sockaddr_in dest;
 static in_addr_t src, tun_src, tun_dest, ipip_src, ipip_dest;
-static const uint64_t tcp_init_magic = 0x1badcafedeadbeefULL;
+static uint64_t tcp_init_magic;
 
 #define PENDING_MESSAGES_BUFF_SIZE (0x3000)
 #define PACKET_READ_SIZE 1500
@@ -539,13 +539,14 @@ int main(int argc, char* argv[]) {
 	assert(argc > 4 && "Need ipip remote host");
 	assert(argc > 5 && "Need ipip local host");
 	assert(argc > 6 && "Need server port");
-	assert(argc > 7 && "Need mode (client or server)");
-	assert(argc > 8 && "Need src host");
-	if (std::string(argv[7]) == std::string("client"))
-		assert(argc > 9 && "Need dest host");
+	assert(argc > 7 && "Need shared secret");
+	assert(argc > 8 && "Need mode (client or server)");
+	assert(argc > 9 && "Need src host");
+	if (std::string(argv[8]) == std::string("client"))
+		assert(argc > 10 && "Need dest host");
 
-	assert(std::string(argv[7]) == std::string("client") || std::string(argv[7]) == std::string("server"));
-	are_server = (std::string(argv[7]) == std::string("server"));
+	assert(std::string(argv[8]) == std::string("client") || std::string(argv[8]) == std::string("server"));
+	are_server = (std::string(argv[8]) == std::string("server"));
 
 	//
 	// Parse args into variables
@@ -570,12 +571,14 @@ int main(int argc, char* argv[]) {
 		remote_port = atoi(argv[6]);
 	}
 
-	src = inet_addr(argv[8]);
+	tcp_init_magic = atoll(argv[7]);
+
+	src = inet_addr(argv[9]);
 
 	memset(&dest, 0, sizeof(dest));
 	if (!are_server) {
 		dest.sin_family = AF_INET;
-		dest.sin_addr.s_addr = inet_addr(argv[9]);
+		dest.sin_addr.s_addr = inet_addr(argv[10]);
 	}
 
 	//