Kako dodati aplikaciju u OpenWrt-u

Recimo da se naša aplikacija zove rcserver hijerahija fajlova bi trebala da izgleda ovako

openwrt/
  package/
    rcserver/
      Makefile
      src/
        tcp_server.c
      files/
        tcp_server_init_script
        tcp_server.config

Make file bi trebalo da izgleda ovako

include $(TOPDIR)/rules.mk

PKG_NAME:=rcserver
PKG_VERSION:=0.1
PKG_RELEASE:=1

include $(INCLUDE_DIR)/package.mk

define Package/rcserver
  SECTION:=utils
  CATEGORY:=Utilities
  TITLE:=RC Server
  DEPENDS:=+libpthread
endef

define Package/rcserver/description
  A simple TCP RC server program.
endef

define Build/Prepare
    $(INSTALL_DIR) $(PKG_BUILD_DIR)
    $(CP) ./src/* $(PKG_BUILD_DIR)/
endef

define Build/Compile
    $(TARGET_CC) $(TARGET_CFLAGS) -o $(PKG_BUILD_DIR)/rc_server $(PKG_BUILD_DIR)/rc_server.c
endef

define Package/rcserver/install
    $(INSTALL_DIR) $(1)/usr/bin
    $(INSTALL_BIN) $(PKG_BUILD_DIR)/rc_server $(1)/usr/bin/

    $(INSTALL_DIR) $(1)/etc/init.d
    $(INSTALL_BIN) ./files/rc_server_init_script $(1)/etc/init.d/rc_server

    $(INSTALL_DIR) $(1)/etc/config
    $(INSTALL_CONF) ./files/rc_server.config $(1)/etc/config/rc_server
endef

$(eval $(call BuildPackage,rcserver))

Fajl rc_server.config bi trebalo da izgleda ovako

config tcp_server
    option enabled '1'
    option port '5555'

rc_server_init_script fajl bi trebalo da izgleda ovako

#!/bin/sh /etc/rc.common

START=99
STOP=10

start() {
    echo "Starting TCP server"
    /usr/bin/tcp_server &
}

stop() {
    echo "Stopping TCP server"
    killall tcp_server
}

I naravno vaš kod bi trebalo da stavite u fajl tcp_server.c.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>

#define PORT 5555
#define BACKLOG 5

int main() {
    int server_fd, new_socket;
    struct sockaddr_in address;
    int opt = 1;
    int addrlen = sizeof(address);
    char buffer[1024] = {0};
    const char *hello = "Hello from server";

    // Creating socket file descriptor
    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
        perror("socket failed");
        exit(EXIT_FAILURE);
    }

    // Forcefully attaching socket to the port 5555
    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt))) {
        perror("setsockopt");
        close(server_fd);
        exit(EXIT_FAILURE);
    }
    address.sin_family = AF_INET;
    address.sin_addr.s_addr = INADDR_ANY;
    address.sin_port = htons(PORT);

    // Forcefully attaching socket to the port 5555
    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) {
        perror("bind failed");
        close(server_fd);
        exit(EXIT_FAILURE);
    }
    if (listen(server_fd, BACKLOG) < 0) {
        perror("listen");
        close(server_fd);
        exit(EXIT_FAILURE);
    }
    printf("Server listening on port %d\n", PORT);

    while (1) {
        if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen)) < 0) {
            perror("accept");
            close(server_fd);
            exit(EXIT_FAILURE);
        }

        // Clear the buffer
        memset(buffer, 0, sizeof(buffer));

        // Read data from the client
        int valread;
        while ((valread = read(new_socket, buffer, sizeof(buffer) - 1)) > 0) {
            buffer[valread] = '\0';
            printf("Received: %s\n", buffer);
        }

        if (valread < 0) {
            perror("read");
        }

        send(new_socket, hello, strlen(hello), 0);
        printf("Hello message sent\n");

        close(new_socket);
    }

    return 0;
}

Zatim idemo

make menuconfig 

i u Utilities označimo sa <*> ime našeg programa i nakon toga

make -j5

gdje je broj 5 broj jezgara vašeg procesora +1