userspace/test: add web server test program

Signed-off-by: EnderIce2 <enderice2@protonmail.com>

Userspace/apps/test/web_test/Makefile

@@ -0,0 +1,36 @@
+default:
+	$(error Do not run this Makefile directly!)
+
+S_SOURCES = $(shell find ./ -type f -name '*.S')
+C_SOURCES = $(shell find ./ -type f -name '*.c')
+CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
+
+OBJ = $(S_SOURCES:.S=.o) $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o)
+
+FILENAME = $(notdir $(shell pwd))
+WARNCFLAG = -Wall -Wextra
+
+build: $(FILENAME).elf
+	cp $(FILENAME).elf $(WORKSPACE_DIR)/out/bin/$(FILENAME)
+
+# Use static linking
+LDFLAGS += -static -fno-pic -fno-pie -Wl,-static
+
+$(FILENAME).elf: $(OBJ)
+	$(info Linking $@)
+	$(CC) $(LDFLAGS) $(SYSROOT) $(OBJ) -o $@
+
+%.o: %.c $(HEADERS)
+	$(info Compiling $<)
+	$(CC) $(CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
+
+%.o: %.cpp $(HEADERS)
+	$(info Compiling $<)
+	$(CXX) $(CFLAGS) $(WARNCFLAG) -std=c++20 -fexceptions -c $< -o $@ -fno-rtti
+
+%.o: %.S
+	$(info Compiling $<)
+	$(AS) -o $@ $<
+
+clean:
+	rm -f $(OBJ) $(FILENAME).elf

Userspace/apps/test/web_test/web.c

@@ -0,0 +1,86 @@
+/*
+	This file is part of Fennix Userspace.
+
+	Fennix Userspace is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Userspace is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Userspace. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+
+#define PORT 8080
+#define BUFFER_SIZE 1024
+
+void HandleClient(int clientSocket)
+{
+	char buffer[BUFFER_SIZE];
+	read(clientSocket, buffer, BUFFER_SIZE - 1);
+
+	const char *response =
+		"HTTP/1.1 200 OK\r\n"
+		"Content-Type: text/html\r\n"
+		"Content-Length: 12\r\n"
+		"Connection: close\r\n"
+		"\r\n"
+		"Hello World!";
+
+	write(clientSocket, response, strlen(response));
+	close(clientSocket);
+}
+
+int main()
+{
+	int serverSocket = socket(AF_INET, SOCK_STREAM, 0);
+	if (serverSocket == -1)
+	{
+		perror("Socket creation failed");
+		return 1;
+	}
+
+	struct sockaddr_in serverAddr;
+	serverAddr.sin_family = AF_INET;
+	serverAddr.sin_addr.s_addr = INADDR_ANY;
+	serverAddr.sin_port = htons(PORT);
+
+	if (bind(serverSocket, (struct sockaddr *)&serverAddr, sizeof(serverAddr)) < 0)
+	{
+		perror("Bind failed");
+		return 1;
+	}
+
+	if (listen(serverSocket, 5) < 0)
+	{
+		perror("Listen failed");
+		return 1;
+	}
+
+	printf("Server running on port %d\n", PORT);
+	while (1)
+	{
+		struct sockaddr_in clientAddr;
+		socklen_t addrLen = sizeof(clientAddr);
+		int clientSocket = accept(serverSocket, (struct sockaddr *)&clientAddr, &addrLen);
+		if (clientSocket < 0)
+		{
+			perror("Accept failed");
+			continue;
+		}
+		HandleClient(clientSocket);
+	}
+
+	close(serverSocket);
+	return 0;
+}