From 61c54add9149ec029241856a1408d01d5cc3ee71 Mon Sep 17 00:00:00 2001
From: Nishi <nishi@nishi.boats>
Date: Fri, 13 Sep 2024 11:18:23 +0000
Subject: [PATCH] can listen now

git-svn-id: file:///raid/svn-personal/tewi/trunk@8 8739d7e6-ffea-ec47-b151-bdff447c6205
---
 Platform/win64.mk  |   2 +-
 Server/Makefile    |   2 +-
 Server/main.c      |   5 +++
 Server/server.c    | 110 +++++++++++++++++++++++++++++++++++++++++++++
 Server/tw_server.h |   8 ++++
 5 files changed, 125 insertions(+), 2 deletions(-)
 create mode 100644 Server/server.c
 create mode 100644 Server/tw_server.h

diff --git a/Platform/win64.mk b/Platform/win64.mk
index 94763f9..a374bf7 100644
--- a/Platform/win64.mk
+++ b/Platform/win64.mk
@@ -4,5 +4,5 @@ CC = x86_64-w64-mingw32-gcc
 AR = x86_64-w64-mingw32-ar
 CFLAGS = -g -std=c99 -DPREFIX=\"$(PREFIX)\" -I $(PWD)/Common -I $(PWD)/openssl/include
 LDFLAGS = -L $(PWD)/openssl/lib
-LIBS =
+LIBS = -lws2_32
 EXEC = .exe
diff --git a/Server/Makefile b/Server/Makefile
index 26a59e1..efaea2d 100644
--- a/Server/Makefile
+++ b/Server/Makefile
@@ -5,7 +5,7 @@ include $(PWD)/Platform/$(PLATFORM).mk
 .PHONY: all clean
 .SUFFIXES: .c .o
 
-OBJS = version.o main.o config.o
+OBJS = version.o main.o config.o server.o
 
 all: tewi$(EXEC)
 
diff --git a/Server/main.c b/Server/main.c
index 614f5e4..da854d7 100644
--- a/Server/main.c
+++ b/Server/main.c
@@ -9,6 +9,7 @@
 #include <cm_log.h>
 
 #include "tw_config.h"
+#include "tw_server.h"
 #include "tw_version.h"
 
 extern bool cm_do_log;
@@ -43,5 +44,9 @@ int main(int argc, char** argv) {
 		fprintf(stderr, "Could not read the config\n");
 		return 1;
 	}
+	if(tw_server_init() != 0) {
+		fprintf(stderr, "Could not initialize the server\n");
+		return 1;
+	}
 	cm_log("Daemon", "Ready");
 }
diff --git a/Server/server.c b/Server/server.c
new file mode 100644
index 0000000..af96368
--- /dev/null
+++ b/Server/server.c
@@ -0,0 +1,110 @@
+/* $Id$ */
+
+#include "tw_server.h"
+
+#include "tw_config.h"
+
+#include <unistd.h>
+#include <string.h>
+
+#include <cm_log.h>
+
+#ifdef __MINGW32__
+#include <winsock2.h>
+#define NO_IPV6
+#else
+#include <sys/select.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#endif
+
+extern struct tw_config config;
+
+fd_set fdset;
+int sockcount = 0;
+int sockets[MAX_PORTS];
+
+#ifdef NO_IPV6
+struct sockaddr_in addresses[MAX_PORTS];
+#else
+struct sockaddr_in6 addresses[MAX_PORTS];
+#endif
+
+void close_socket(int sock) {
+#ifdef __MINGW32__
+	closesocket(sock);
+#else
+	close(sock);
+#endif
+}
+
+int tw_server_init(void) {
+	int i;
+#ifdef __MINGW32__
+	WSADATA wsa;
+	WSAStartup(MAKEWORD(2, 0), &wsa);
+#endif
+	FD_ZERO(&fdset);
+	for(i = 0; config.ports[i] != -1; i++)
+		;
+	sockcount = i;
+	for(i = 0; config.ports[i] != -1; i++) {
+#ifdef NO_IPV6
+		int sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+#else
+		int sock = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP);
+#endif
+#ifdef __MINGW32__
+		if(sock == INVALID_SOCKET)
+#else
+		if(sock < 0)
+#endif
+		{
+			cm_log("Server", "Socket creation failure");
+			return 1;
+		}
+		int yes = 1;
+		if(setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*)&yes, sizeof(yes)) < 0) {
+			close_socket(sock);
+			cm_log("Server", "setsockopt failure (reuseaddr)");
+			return 1;
+		}
+		if(setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (void*)&yes, sizeof(yes)) < 0) {
+			close_socket(sock);
+			cm_log("Server", "setsockopt failure (nodelay)");
+			return 1;
+		}
+#ifndef NO_IPV6
+		int no = 0;
+		if(setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, (void*)&no, sizeof(no)) < 0) {
+			close_socket(sock);
+			cm_log("Server", "setsockopt failure (IPv6)");
+			return 1;
+		}
+#endif
+		memset(&addresses[i], 0, sizeof(addresses[i]));
+#ifdef NO_IPV6
+		addresses[i].sin_family = AF_INET;
+		addresses[i].sin_addr.s_addr = INADDR_ANY;
+		addresses[i].sin_port = htons(config.ports[i]);
+#else
+		addresses[i].sin6_family = AF_INET6;
+		addresses[i].sin6_addr = in6addr_any;
+		addresses[i].sin6_port = htons(config.ports[i]);
+#endif
+		if(bind(sock, (struct sockaddr*)&addresses[i], sizeof(addresses[i])) < 0) {
+			close_socket(sock);
+			cm_log("Server", "Bind failure");
+			return 1;
+		}
+		if(listen(sock, 128) < 0) {
+			close_socket(sock);
+			cm_log("Server", "Listen failure");
+			return 1;
+		}
+		sockets[i] = sock;
+	}
+	return 0;
+}
diff --git a/Server/tw_server.h b/Server/tw_server.h
new file mode 100644
index 0000000..12bde4c
--- /dev/null
+++ b/Server/tw_server.h
@@ -0,0 +1,8 @@
+/* $Id$ */
+
+#ifndef __TW_SERVER_H__
+#define __TW_SERVER_H__
+
+int tw_server_init(void);
+
+#endif