Add Websockets server

Websockets server is for game networking.

CMakeLists.txt

@@ -5,6 +5,14 @@ project(izanagi C)
 
 set(CMAKE_C_STANDARD 11)
 
+if (WIN32)
+  if (CMAKE_SIZEOF_VOID_P EQUAL 8)
+    set(PROJECT_ARCH x64)
+  else ()
+    set(PROJECT_ARCH x86)
+  endif ()
+endif ()
+
 include_directories(
   "${PROJECT_SOURCE_DIR}/dependencies/SDL2/include"
   "${PROJECT_SOURCE_DIR}/dependencies/minIni/dev"
@@ -12,31 +20,27 @@ include_directories(
   "${PROJECT_SOURCE_DIR}/dependencies/portmidi/pm_common"
   "${PROJECT_SOURCE_DIR}/dependencies/spine-runtimes/spine-c/spine-c/include"
   "${PROJECT_SOURCE_DIR}/dependencies/getopt-for-windows"
+  "${PROJECT_SOURCE_DIR}/dependencies/libwebsockets/build/include"
+  "${PROJECT_SOURCE_DIR}/dependencies/openssl/${PROJECT_ARCH}/include"
 )
 
-if (WIN32)
-  if (CMAKE_SIZEOF_VOID_P EQUAL 8)
-    set(PROJECT_ARCH x64)
-  else ()
-    set(PROJECT_ARCH x86)
-  endif ()
-endif ()
-
 link_directories(
   "${PROJECT_SOURCE_DIR}/dependencies/SDL2/lib/${PROJECT_ARCH}"
   "${PROJECT_SOURCE_DIR}/dependencies/portmidi/Release"
+  "${PROJECT_SOURCE_DIR}/dependencies/libwebsockets/build/lib/Release"
+  "${PROJECT_SOURCE_DIR}/dependencies/openssl/${PROJECT_ARCH}/lib"
 )
 
 add_executable(
   game
     dependencies/minIni/dev/minIni.h
     dependencies/minIni/dev/minIni.c
-        dependencies/getopt-for-windows/getopt.h
-        dependencies/getopt-for-windows/getopt.c
+    dependencies/getopt-for-windows/getopt.h
+    dependencies/getopt-for-windows/getopt.c
     src/packages/game/output/IZ_video.h
     src/packages/game/output/IZ_video.c
     src/packages/game/IZ_common.h
-        src/packages/game/input/IZ_action.h
+    src/packages/game/input/IZ_action.h
     src/packages/game/IZ_app.h
     src/packages/game/IZ_app.c
     src/packages/game/main.c
@@ -46,7 +50,27 @@ add_executable(
     src/packages/game/input/IZ_keyboard.h
     src/packages/game/IZ_config.c
     src/packages/game/IZ_config.h
-    src/packages/game/geometry/IZ_point2d.c src/packages/game/geometry/IZ_point2d.h src/packages/game/geometry/IZ_vector2d.c src/packages/game/geometry/IZ_vector2d.h src/packages/game/geometry/IZ_rect.c src/packages/game/geometry/IZ_rect.h src/packages/game/core/IZ_object.c src/packages/game/core/IZ_object.h src/packages/game/core/IZ_creature.c src/packages/game/core/IZ_creature.h src/packages/game/core/IZ_entity.c src/packages/game/core/IZ_entity.h src/packages/game/memory/IZ_pool.c src/packages/game/memory/IZ_pool.h src/packages/game/input/IZ_input.c src/packages/game/input/IZ_input.h src/packages/game/input/IZ_midi.c src/packages/game/input/IZ_midi.h src/packages/game/data/IZ_list.c src/packages/game/data/IZ_list.h)
+    src/packages/game/geometry/IZ_point2d.c
+    src/packages/game/geometry/IZ_point2d.h
+    src/packages/game/geometry/IZ_vector2d.c
+    src/packages/game/geometry/IZ_vector2d.h
+    src/packages/game/geometry/IZ_rect.c
+    src/packages/game/geometry/IZ_rect.h
+    src/packages/game/core/IZ_object.c
+    src/packages/game/core/IZ_object.h
+    src/packages/game/core/IZ_creature.c
+    src/packages/game/core/IZ_creature.h
+    src/packages/game/core/IZ_entity.c
+    src/packages/game/core/IZ_entity.h
+    src/packages/game/memory/IZ_pool.c
+    src/packages/game/memory/IZ_pool.h
+    src/packages/game/input/IZ_input.c
+    src/packages/game/input/IZ_input.h
+    src/packages/game/input/IZ_midi.c
+    src/packages/game/input/IZ_midi.h
+    src/packages/game/data/IZ_list.c
+    src/packages/game/data/IZ_list.h
+)
 
 target_link_libraries(
   game
@@ -67,7 +91,8 @@ add_executable(
     src/packages/game/geometry/IZ_rect.c
     src/packages/game/geometry/IZ_vector2d.h
     src/packages/game/geometry/IZ_vector2d.c
-        src/packages/game/geometry/geometry.test.c)
+    src/packages/game/geometry/geometry.test.c
+)
 
 add_executable(
   game-test-input
@@ -96,7 +121,6 @@ add_executable(
     src/packages/game/input/input.test.c
 )
 
-
 add_executable(
   game-test-output
     dependencies/bdd-for-c/bdd-for-c.h
@@ -122,7 +146,10 @@ add_executable(
 
     src/packages/game/memory/IZ_pool.h
     src/packages/game/memory/IZ_pool.c
-        src/packages/game/memory/memory.test.c src/packages/game/data/IZ_list.c src/packages/game/data/IZ_list.h)
+    src/packages/game/memory/memory.test.c
+    src/packages/game/data/IZ_list.c
+    src/packages/game/data/IZ_list.h
+)
 
 add_executable(
   game-test-data
@@ -130,20 +157,49 @@ add_executable(
     src/packages/test/IZ_mock.h
     src/packages/test/IZ_test.h
 
-        src/packages/game/data/IZ_list.h
-        src/packages/game/data/IZ_list.c
-        src/packages/game/data/data.test.c)
+    src/packages/game/data/IZ_list.h
+    src/packages/game/data/IZ_list.c
+    src/packages/game/data/data.test.c
+)
+
+add_executable(
+  server
+    dependencies/minIni/dev/minIni.h
+    dependencies/minIni/dev/minIni.c
+    src/packages/server/IZ_common.h
+    src/packages/server/main.c
+)
+
+target_link_libraries(
+  server
+    libcrypto
+    libssl
+    websockets
+)
 
 if (WIN32)
   add_custom_command(TARGET game POST_BUILD
     COMMAND ${CMAKE_COMMAND} -E copy_if_different  # which executes "cmake - E copy_if_different..."
     "${PROJECT_SOURCE_DIR}/dependencies/SDL2/lib/${PROJECT_ARCH}/SDL2.dll"      # <--this is in-file
     $<TARGET_FILE_DIR:game>)                 # <--this is out-file path
-endif ()
 
-if (WIN32)
   add_custom_command(TARGET game POST_BUILD
     COMMAND ${CMAKE_COMMAND} -E copy_if_different  # which executes "cmake - E copy_if_different..."
     "${PROJECT_SOURCE_DIR}/dependencies/portmidi/Release/portmidi.dll"      # <--this is in-file
     $<TARGET_FILE_DIR:game>)                 # <--this is out-file path
+
+  add_custom_command(TARGET server POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different  # which executes "cmake - E copy_if_different..."
+    "${PROJECT_SOURCE_DIR}/dependencies/libwebsockets/build/bin/Release/websockets.dll"      # <--this is in-file
+    $<TARGET_FILE_DIR:server>)                 # <--this is out-file path
+
+  add_custom_command(TARGET server POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different  # which executes "cmake - E copy_if_different..."
+    "${PROJECT_SOURCE_DIR}/dependencies/openssl/${PROJECT_ARCH}/bin/libssl-1_1-x64.dll"      # <--this is in-file
+    $<TARGET_FILE_DIR:server>)                 # <--this is out-file path
+
+  add_custom_command(TARGET server POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different  # which executes "cmake - E copy_if_different..."
+    "${PROJECT_SOURCE_DIR}/dependencies/openssl/${PROJECT_ARCH}/bin/libcrypto-1_1-x64.dll"      # <--this is in-file
+    $<TARGET_FILE_DIR:server>)                 # <--this is out-file path
 endif ()

README.md

@@ -1,17 +1,20 @@
-# sdl2-hello-world
-
-A beginner template for SDL2 powered by CMake.
-
-## Setup
-
-1. Clone this repo.
-2. Download the **SDL2 Development Libraries** from the [official download page](https://www.libsdl.org/download-2.0.php).
-   - For Windows
-     1. Unpack the **MSVC** archive under `dependencies` folder in this project's root.
-     2. Rename the directory as `SDL2`.
-   - For macOS
-     
-     `TODO`
-   
-   _Alternatively, on Windows, you can link the external libraries via symlink._
-3. Build via CMake.
+# sdl2-hello-world
+
+A beginner template for SDL2 powered by CMake.
+
+## Setup
+
+1. Clone this repo.
+2. Download the **SDL2 Development Libraries** from the [official download page](https://www.libsdl.org/download-2.0.php).
+   - For Windows
+     1. Unpack the **MSVC** archive under `dependencies` folder in this project's root.
+     2. Rename the directory as `SDL2`.
+   - For macOS
+     
+     `TODO`
+   
+   _Alternatively, on Windows, you can link the external libraries via symlink._
+3. Build the following dependencies first:
+   - `portmidi`
+   - `libwebsockets` (follow the [instructions on building LWS](https://libwebsockets.org/lws-api-doc-master/html/md_README_8build.html))
+4. Build via CMake.

dependencies.txt

@@ -3,3 +3,4 @@ https://github.com/grassator/bdd-for-c
 https://github.com/PortMidi/portmidi
 https://github.com/EsotericSoftware/spine-runtimes
 https://github.com/Chunde/getopt-for-windows
+https://libwebsockets.org/repo/libwebsockets

src/packages/game/IZ_common.h

@@ -18,6 +18,6 @@ typedef int16_t i16;
 typedef int32_t i32;
 typedef int64_t i64;
 
-typedef u8 IZ_ProcedureResult;
+typedef i32 IZ_ProcedureResult;
 
 #endif

src/packages/game/main.c

@@ -1,7 +1,6 @@
-#include <SDL.h>
 #include "IZ_app.h"
 
-int main(int arg_count, char* arg_values[]) {
+IZ_ProcedureResult main(i32 arg_count, char* arg_values[]) {
 	IZ_App app;
 	return IZ_AppRun(&app, arg_count, arg_values);
 }

src/packages/server/IZ_common.h

@@ -0,0 +1 @@
+E:/Projects/Games/izanagi/src/packages/game/IZ_common.h

src/packages/server/main.c

@@ -0,0 +1,95 @@
+#include <libwebsockets.h>
+#include <signal.h>
+#include "IZ_common.h"
+
+static struct lws_protocols protocols[] = {
+	{ "http", lws_callback_http_dummy, 0, 0, 0, NULL, 0},
+	LWS_PROTOCOL_LIST_TERM
+};
+
+static const lws_retry_bo_t retry = {
+	.secs_since_valid_ping = 3,
+	.secs_since_valid_hangup = 10,
+};
+
+static i32 interrupted;
+
+static const struct lws_http_mount mount = {
+	/* .mount_next */		NULL,		/* linked-list "next" */
+	/* .mountpoint */		"/",		/* mountpoint URL */
+	/* .origin */			"./mount-origin",  /* serve from dir */
+	/* .def */			"index.html",	/* default filename */
+	/* .protocol */			NULL,
+	/* .cgienv */			NULL,
+	/* .extra_mimetypes */		NULL,
+	/* .interpret */		NULL,
+	/* .cgi_timeout */		0,
+	/* .cache_max_age */		0,
+	/* .auth_mask */		0,
+	/* .cache_reusable */		0,
+	/* .cache_revalidate */		0,
+	/* .cache_intermediaries */	0,
+	/* .origin_protocol */		LWSMPRO_FILE,	/* files in a dir */
+	/* .mountpoint_len */		1,		/* char count */
+	/* .basic_auth_login_file */	NULL,
+};
+
+void sigint_handler(i32 sig) {
+	interrupted = 1;
+}
+
+IZ_ProcedureResult main(i32 arg_count, char* arg_values[]) {
+	struct lws_context_creation_info info;
+	struct lws_context* context;
+	const char* p;
+	i32 n = 0;
+	i32 logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE;
+
+	signal(SIGINT, sigint_handler);
+
+	if ((p = lws_cmdline_option(arg_count, arg_values, "-d")))
+		logs = atoi(p);
+
+	lws_set_log_level(logs, NULL);
+	lwsl_user("LWS minimal ws server | visit http://localhost:7681 (-s = use TLS / https)\n");
+
+	memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
+	info.port = 7681;
+	info.mounts = &mount;
+	info.protocols = protocols;
+	info.vhost_name = "localhost";
+#if defined(LWS_WITH_PLUGINS)
+	info.pvo = &pvo;
+#endif
+	info.options =
+		LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
+
+#if defined(LWS_WITH_TLS)
+	if (lws_cmdline_option(arg_count, arg_values, "-s")) {
+		lwsl_user("Server using TLS\n");
+		info.options |= LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
+		info.ssl_cert_filepath = "localhost-100y.cert";
+		info.ssl_private_key_filepath = "localhost-100y.key";
+	}
+#endif
+
+	if (lws_cmdline_option(arg_count, arg_values, "-h"))
+		info.options |= LWS_SERVER_OPTION_VHOST_UPG_STRICT_HOST_CHECK;
+
+	if (lws_cmdline_option(arg_count, arg_values, "-v"))
+		info.retry_and_idle_policy = &retry;
+
+	context = lws_create_context(&info);
+	if (!context) {
+		lwsl_err("lws init failed\n");
+		return 1;
+	}
+
+	while (n >= 0 && !interrupted)
+		n = lws_service(context, 0);
+
+	lws_context_destroy(context);
+
+
+	return 0;
+}