Smart-agriculture-project
/
c-router-emulator
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

router模块: 增加6、9、0菜单项, arp 结果通过数据库读取并打印

This commit is contained in:
flykhan 2023-09-21 15:20:01 +08:00
parent 20d7d83ef7
commit 65140ec16c
3 changed files with 200 additions and 104 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
router/net_task_thread.c
View File

@ -1,11 +1,12 @@
#include "net_task_thread.h"
#include "db.h"
void *net_task(void *arg)
{
printf("net_task\n");
char *dev1 = "ens33"; // 第一个网卡
char *dev2 = "ens38"; // 第二个网卡
char *dev2 = "ens34"; // 第二个网卡
// 打开网卡设备
// libnet_context1 使用 open_device 函数打开网卡设备1 后返回的 libnet 上下文
@ -126,6 +127,9 @@ void process_packet(u_char *arg, const struct pcap_pkthdr *pkthdr, const u_char
libnet,
0);
// 组包测试（如果能打印到这行，则说明组包成功）
printf("testssss\n");
if (t == -1)
{
perror("libnet_build_ethernet");
@ -152,5 +156,52 @@ void process_packet(u_char *arg, const struct pcap_pkthdr *pkthdr, const u_char
void process_arp_packet(const u_char *packet)
{
struct ether_header *eth_hdr = (struct ether_header *)packet;
struct ether_arp *arp_hdr = (struct ether_arp *)(packet + LIBNET_ETH_H); // packet + 14
if (ntohs(eth_hdr->ether_type) == ETHERTYPE_ARP)
{
char ip_address[INET_ADDRSTRLEN];
char mac_address[ETH_ALEN * 3]; // ETH_ALEN * 3 是为了申请足够的空间存储 MAC 地址
/*
inet_ntop 用于将二进制的 IP 地址转换为可读的字符串形式
参数说明:
AF_INET：指定要转换的地址族，这里是 IPv4 地址。
arp_hdr->arp_spa：源 IP 地址的指针，它是一个二进制的网络字节序的 IPv4 地址。
ip_address：用于存储转换后的 IP 地址字符串的缓冲区。
sizeof(ip_address)：指定缓冲区的大小，以确保不会发生缓冲区溢出。
*/
inet_ntop(AF_INET, arp_hdr->arp_spa, ip_address, sizeof(ip_address));
snprintf(mac_address, sizeof(mac_address),
"%02x:%02x:%02x:%02x:%02x:%02x",
arp_hdr->arp_sha[0],
arp_hdr->arp_sha[1],
arp_hdr->arp_sha[2],
arp_hdr->arp_sha[3],
arp_hdr->arp_sha[4],
arp_hdr->arp_sha[5]);
// printf("ARP: %s -> %s\n", ip_address, mac_address);
MYSQL_BIND parmas[2];
parmas[0].buffer_type = MYSQL_TYPE_STRING;
parmas[0].buffer = ip_address;
parmas[0].buffer_length = strlen(ip_address);
parmas[0].is_null = 0;
parmas[0].length = &parmas[0].buffer_length;
parmas[1].buffer_type = MYSQL_TYPE_STRING;
parmas[1].buffer = mac_address;
parmas[1].buffer_length = strlen(mac_address);
parmas[1].is_null = 0;
parmas[1].length = &parmas[1].buffer_length;
// snprintf(arp_result_sql, sizeof(arp_result_sql), "insert into arp_result(ip, mac) values('%s', '%s')", ip_address, mac_address);
char arp_result_sql[1024] = "insert into arp_result(ip, mac) values(?, ?)";
int result = insert(arp_result_sql, parmas);
if (result > 0)
{
printf("ARP: %s -> %s\n", ip_address, mac_address);
}
}
}

248
router/router.c
View File

@ -7,6 +7,9 @@ int main(int argc, char const *argv[])
// 初始化
net_init(); // 初始化网络和数据库
// 打开菜单
menu_choice();
// pthread_t thread_net_task;
// pthread_create(&thread_net_task, NULL, net_task, NULL);
// pthread_join(thread_net_task, NULL);
@ -36,108 +39,6 @@ void net_init()
printf("数据库连接成功\n");
else
printf("数据库连接错误\n");
// 选择标志位
int choice = 0;
show(); // 打印菜单
int pthread_flag = 0;
while (1)
{
printf("请输入你的选择: \n");
scanf("%d", &choice);
getchar(); // 清空缓冲区
if (1 == choice)
{
char add_blacked_ip[INET_ADDRSTRLEN] = "";
printf("请输入要添加的黑名单IP：格式如 192.168.6.5\n");
fgets(add_blacked_ip, sizeof(add_blacked_ip), stdin);
add_blacked_ip[strlen(add_blacked_ip) - 1] = '\0'; // 将最后的换行符替换为字符串结束符
printf("add_blacked_ip: %s\n", add_blacked_ip);
// IP 格式检查
if (is_ip_valid(add_blacked_ip) != 0)
{
printf("IP地址格式错误\n");
continue;
}
// 将IP地址加入黑名单
MYSQL_BIND parmas[1];
parmas[0].buffer_type = MYSQL_TYPE_STRING;
parmas[0].buffer = add_blacked_ip;
parmas[0].buffer_length = strlen(add_blacked_ip);
parmas[0].is_null = 0;
parmas[0].length = &parmas[0].buffer_length;
const char *insert_ip_fw_sql = "insert into ip_fw(ip) values(?)";
int result = insert(insert_ip_fw_sql, parmas);
if (result > 0)
{
printf("黑名单添加成功\n");
}
else
{
printf("黑名单添加失败\n");
}
}
else if (2 == choice)
{
const char *select_ip_fw_sql = "select * from ip_fw";
query(select_ip_fw_sql, printResult);
}
else if (3 == choice)
{
char delete_blacked_ip[INET_ADDRSTRLEN] = "";
printf("请输入要删除的黑名单IP：格式如 192.168.6.5\n");
fgets(delete_blacked_ip, sizeof(delete_blacked_ip), stdin);
delete_blacked_ip[strlen(delete_blacked_ip) - 1] = '\0'; // 将最后的换行符替换为字符串结束符
printf("delete_blacked_ip: %s\n", delete_blacked_ip);
// IP 格式检查
if (is_ip_valid(delete_blacked_ip) != 0)
{
printf("IP地址格式错误\n");
continue;
}
// 将IP地址从黑名单中删除
MYSQL_BIND parmas[1];
parmas[0].buffer_type = MYSQL_TYPE_STRING;
parmas[0].buffer = delete_blacked_ip;
parmas[0].buffer_length = strlen(delete_blacked_ip);
parmas[0].is_null = 0;
parmas[0].length = &parmas[0].buffer_length;
const char *delete_ip_fw_sql = "delete from ip_fw where ip = ?";
int result = delete (delete_ip_fw_sql, parmas);
if (result > 0)
{
printf("黑名单删除成功\n");
}
else
{
printf("黑名单删除失败\n");
}
}
else if (4 == choice)
{
if (0 == pthread_flag)
{
printf("开启路由器\n");
pthread_flag += 1; // 线程标志位修改
pthread_t thread_net_task;
pthread_create(&thread_net_task, NULL, net_task, NULL);
pthread_detach(thread_net_task);
}
else
{
printf("路由器正在运行......\n");
}
}
else if (5 == choice)
{
}
}
}
// MySQL 测试
@ -236,3 +137,146 @@ int is_ip_valid(const char *ip)
}
// 发送ARP请求方法
// 后台菜单
void menu_choice()
{
// 选择标志位
int choice = 0;
show(); // 打印菜单
int pthread_flag = 0;
while (1)
{
printf("请输入你的选择: \n");
scanf("%d", &choice);
getchar(); // 清空缓冲区
// 后端添加黑名单 ip
if (1 == choice)
{
char add_blacked_ip[INET_ADDRSTRLEN] = "";
printf("请输入要添加的黑名单IP：格式如 192.168.6.5\n");
fgets(add_blacked_ip, sizeof(add_blacked_ip), stdin);
add_blacked_ip[strlen(add_blacked_ip) - 1] = '\0'; // 将最后的换行符替换为字符串结束符
printf("add_blacked_ip: %s\n", add_blacked_ip);
// IP 格式检查
if (is_ip_valid(add_blacked_ip) != 0)
{
printf("IP地址格式错误\n");
continue;
}
// 将IP地址加入黑名单
MYSQL_BIND parmas[1];
parmas[0].buffer_type = MYSQL_TYPE_STRING;
parmas[0].buffer = add_blacked_ip;
parmas[0].buffer_length = strlen(add_blacked_ip);
parmas[0].is_null = 0;
parmas[0].length = &parmas[0].buffer_length;
const char *insert_ip_fw_sql = "insert into ip_fw(ip) values(?)";
int result = insert(insert_ip_fw_sql, parmas);
if (result > 0)
{
printf("黑名单添加成功\n");
}
else
{
printf("黑名单添加失败\n");
}
}
// 后端查询黑名单 ip
else if (2 == choice)
{
const char *select_ip_fw_sql = "select * from ip_fw";
query(select_ip_fw_sql, printResult);
}
// 后端删除黑名单 ip
else if (3 == choice)
{
char delete_blacked_ip[INET_ADDRSTRLEN] = "";
printf("请输入要删除的黑名单IP：格式如 192.168.6.5\n");
fgets(delete_blacked_ip, sizeof(delete_blacked_ip), stdin);
delete_blacked_ip[strlen(delete_blacked_ip) - 1] = '\0'; // 将最后的换行符替换为字符串结束符
printf("delete_blacked_ip: %s\n", delete_blacked_ip);
// IP 格式检查
if (is_ip_valid(delete_blacked_ip) != 0)
{
printf("IP地址格式错误\n");
continue;
}
// 将IP地址从黑名单中删除
MYSQL_BIND parmas[1];
parmas[0].buffer_type = MYSQL_TYPE_STRING;
parmas[0].buffer = delete_blacked_ip;
parmas[0].buffer_length = strlen(delete_blacked_ip);
parmas[0].is_null = 0;
parmas[0].length = &parmas[0].buffer_length;
const char *delete_ip_fw_sql = "delete from ip_fw where ip = ?";
int result = delete (delete_ip_fw_sql, parmas);
if (result > 0)
{
printf("黑名单删除成功\n");
}
else
{
printf("黑名单删除失败\n");
}
}
else if (4 == choice)
{
if (0 == pthread_flag)
{
printf("开启路由器\n");
pthread_flag += 1; // 线程标志位修改
pthread_t thread_net_task;
pthread_create(&thread_net_task, NULL, net_task, NULL);
pthread_detach(thread_net_task);
}
else
{
printf("路由器正在运行......\n");
}
}
else if (5 == choice)
{
}
// 显示 ARP 表
else if (6 == choice)
{
const char *select_arp_result_sql = "select * from ip_mac";
query(select_arp_result_sql, printResult);
}
// 重新打印菜单
else if (9 == choice)
{
show();
}
// 退出此系统
else if (0 == choice)
{
close(sockfd); // 关闭原始套接字
close_mysql(); // 关闭数据库连接
// 关闭网络设备
pcap_close(device1);
pcap_close(device2);
printf("退出此系统\n");
return;
}
else
{
printf("输入错误，请重新输入\n");
}
}
}

1
router/router.h
View File

@ -28,6 +28,7 @@ char **dbResult;
int nrow;
int ncolumn;
void menu_choice();
void show(void); // 后端控制菜单
void net_init(); // 网络初始化
void *net_task(void *arg); // 网络任务