测试通过

Makefile

@@ -24,8 +24,6 @@ install:
 	cp images/* $(WORKSPACE)/images/
 	chown -R rocker:rocker $(WORKSPACE)
 
-	-sysctl net.ipv4.conf.all.forwarding=1
-	-iptables -t filter -P FORWARD ACCEPT
 clean:
 	-rocker --rm all
 	-rm -rf $(WORKSPACE)/*

src/main.rs

@@ -194,8 +194,8 @@ fn init_container_env(env: Option<&String>) -> Result<()>{
         std::env::remove_var(k);
     }
 
-    if let Some(env) = env {
+    let env_vec = if let Some(env) = env {
-        let env_vec = if env.starts_with("./") || env.starts_with("/") {
+        let mut env_vec = if env.starts_with("./") || env.starts_with("/") {
             // 读取出路径指定的文件作为env
             let env_path = Path::new(env);
             let mut env_file = fs::File::open(env_path)?;
@@ -208,14 +208,17 @@ fn init_container_env(env: Option<&String>) -> Result<()>{
         } else {
             env.split(",").map(String::from).collect::<Vec<String>>()
         };
-
+        env_vec.push(r#"PS1=\u\h\W\$ "#.to_string());
-        for item_env in env_vec.iter() {
+        env_vec
-            let item_env_v = item_env.split("=").collect::<Vec<&str>>();
+    } else {
-            if item_env_v.len() == 2 {
+        vec![r#"PS1=\u\h\W\$ "#.to_string()]
-                std::env::set_var(item_env_v[0], item_env_v[1])
+    };
-            } else {
+    for item_env in env_vec.iter() {
-                println!("env 格式不正确: {item_env}")
+        let item_env_v = item_env.split("=").collect::<Vec<&str>>();
-            }
+        if item_env_v.len() == 2 {
+            std::env::set_var(item_env_v[0], item_env_v[1])
+        } else {
+            println!("env 格式不正确: {item_env}")
         }
     }
     Ok(())

src/network.rs

@@ -44,6 +44,56 @@ fn set_slave_ip(slave_veth_name: &str, addr: &str, pid: &str) {
     }
 }
 
+fn set_snat(gateway_addr: &str, bridge_name: &str) {
+    // sudo iptables -t nat -A POSTROUTING -s 172.18.0.0/24 ! -o br0 -j MASQUERADE
+    let args = ["-t", "nat", "-A", "POSTROUTING", "-s", &format!("{gateway_addr}/24"), "!", "-o", bridge_name, "-j", "MASQUERADE"];
+    println!("set_snat: {args:?}");
+    let out = std::process::Command::new("iptables")
+        .args(args)
+        .output()
+        .unwrap();
+    if !out.status.success() {
+        panic!("{:?}", out);
+    }
+}
+
+fn set_iptables_forward() {
+    // sudo sysctl net.ipv4.conf.all.forwarding=1
+    let args = ["net.ipv4.conf.all.forwarding=1"];
+    println!("set_iptables_forward: {args:?}");
+    let out = std::process::Command::new("sysctl")
+        .args(args)
+        .output()
+        .unwrap();
+    if !out.status.success() {
+        panic!("{:?}", out);
+    }
+    // sudo iptables -t filter -P FORWARD ACCEPT
+    let args = ["-t", "filter", "-P", "FORWARD", "ACCEPT"];
+    println!("set_iptables_forward: {args:?}");
+    let out = std::process::Command::new("iptables")
+        .args(args)
+        .output()
+        .unwrap();
+    if !out.status.success() {
+        panic!("{:?}", out);
+    }
+}
+
+
+fn set_slave_route(slave_veth_name: &str, bridge_addr: &str, pid: &str) {
+    // sudo nsenter -t 1851 -n -- ip route add default via 172.18.0.1 dev veth3
+    let args = ["-t", pid, "-n", "--", "ip", "route", "add", "default", "via", bridge_addr, "dev", slave_veth_name];
+    println!("set_slave_route: {args:?}");
+    let out = std::process::Command::new("nsenter")
+        .args(args)
+        .output()
+        .unwrap();
+    if !out.status.success() {
+        panic!("{:?}", out);
+    }
+}
+
 fn set_net_up(bridge_name: &str, master_veth_name: &str, pid: &str, slave_veth_name: &str) {
     // sudo ip link set bridge_name up
     let args = ["link", "set", bridge_name, "up"];
@@ -78,8 +128,16 @@ fn set_net_up(bridge_name: &str, master_veth_name: &str, pid: &str, slave_veth_n
         println!("{:?}", out);
     }
 
-
+    // ip link set lo up
-
+    let args = ["-t", pid, "-n", "--", "ip", "link", "set", "lo", "up"];
+    println!("set_up: {args:?}");
+    let out = std::process::Command::new("nsenter")
+        .args(args)
+        .output()
+        .unwrap();
+    if !out.status.success() {
+        println!("{:?}", out);
+    }
 }
 
 fn set_up(dev_name: &str) {
@@ -152,7 +210,7 @@ fn del_bridge(bridge_name: &str) {
 
 
 fn create_veth_pair(master_veth_name: &str, slave_veth_name: &str) {
-    // sudo ip link add veth0 type veth peer name veth1
+    // sudo ip link add master_veth_name type veth peer name slave_veth_name
 
     let args = ["link", "add", master_veth_name, "type", "veth", "peer", "name", slave_veth_name];
     println!("create_veth_pair: {args:?}");
@@ -172,9 +230,9 @@ struct NetWrok {
     bridge_addr: String,         // 192.168.124.1
     slave_addr: String,
 
-    bridge_name: String,       // uuid[:8]_1  // ip 就是 192.168.124.1
+    bridge_name: String,       // ro_uuid[:8]_1  // ip 就是 192.168.124.1
-    master_veth_name: String,  // uuid[:8]_2  // 不分配ip 直接插到桥
+    master_veth_name: String,  // ro_uuid[:8]_2  // 不分配ip 直接插到桥
-    slave_veth_name: String,   // uuid[:8]_3  // ip 就是 192.168.124.3, 插在容器中
+    slave_veth_name: String,   // ro_uuid[:8]_3  // ip 就是 192.168.124.3, 插在容器中
 }
 
 fn get_all_network() -> Vec<NetWrok> {
@@ -226,15 +284,15 @@ fn create_network(uuid_name: &str, pid: i32) {
 
     let network = loop {
         // 生成一个随机桥ip
-        let base_addr = format!("{}.{}.{}", rg.gen_range(200..240), rg.gen_range(200..240), rg.gen_range(200..240));
+        let base_addr = format!("{}.{}.{}", rg.gen_range(150..190), rg.gen_range(150..190), rg.gen_range(150..190));
         let gateway_addr = format!("{base_addr}.0");
         let bridge_addr = format!("{base_addr}.1");
         let slave_addr = format!("{base_addr}.3");
         
         if all_network.iter().any(|n|n.bridge_addr == bridge_addr) == false {
-            let bridge_name = format!("{uuid_name}_1");
+            let bridge_name = format!("ro_{uuid_name}_1");
-            let master_veth_name = format!("{uuid_name}_2");
+            let master_veth_name = format!("ro_{uuid_name}_2");
-            let slave_veth_name = format!("{uuid_name}_3");
+            let slave_veth_name = format!("ro_{uuid_name}_3");
             let net_work = NetWrok {
                 gateway_addr,
                 bridge_addr,
@@ -264,7 +322,30 @@ fn create_network(uuid_name: &str, pid: i32) {
     set_slave_ip(&network.slave_veth_name, &network.slave_addr, pid.to_string().as_str());
     // 激活 上线
     set_net_up(&network.bridge_name, &network.master_veth_name, pid.to_string().as_str(), &&network.slave_veth_name);
+    // 访问公网设置
     // 配置路由
+    set_slave_route(&network.slave_veth_name, &network.bridge_addr, pid.to_string().as_str());
+    // 设置转发规则
+    set_iptables_forward();
+    // 设置snat
+    set_snat(&network.gateway_addr, &network.bridge_name);
+
+
+    // // 创建veth pair
+    // create_veth_pair(&network.master_veth_name, &network.slave_veth_name);
+    // // 把从 pair 添加到容器内
+    // slave_join_bridge(&network.slave_veth_name, pid.to_string().as_str());
+    // // 系统中创建桥
+    // create_bridge_dev(&network.bridge_name);
+    // // 宿主机 主pair 连接桥
+    // master_join_bridge(&network.bridge_name, &network.master_veth_name);
+    // // 给桥分配ip
+    // set_bridge_ip(&network.bridge_name, &network.bridge_addr);
+    // // 给容器内 pair 分配ip
+    // set_slave_ip(&network.slave_veth_name, &network.slave_addr, pid.to_string().as_str());
+    // // 激活 上线
+    // set_net_up(&network.bridge_name, &network.master_veth_name, pid.to_string().as_str(), &&network.slave_veth_name);
+    // // 配置路由
 
 
 
@@ -280,8 +361,8 @@ fn create_network(uuid_name: &str, pid: i32) {
 fn main(){
     // get_all_network();
 
-    let container_id = uuid::Uuid::new_v4().to_string()[0..3].to_string();
+    let container_id = uuid::Uuid::new_v4().to_string()[0..8].to_string();
-    create_network(&container_id, 28930);
+    create_network(&container_id, 15992);
     return;
     
     let addr = "192.168.124.1";
@@ -293,7 +374,8 @@ fn main(){
     create_bridge_dev(&bridge_name);
     set_bridge_ip(&bridge_name, &addr);
     set_up(&bridge_name);
-    // 我们在 set_bridge中补充了网段信息 /24 所以在 set_up的时候, 会自动配置路由表配置路由表 192.168.0.0/24 转发到这 bridge_name 的网络接口上
+    // 我们在 ip addr add 172.18.0.1/24 dev br0  的时候补全了网段信息 /24,  所以在 ip link set br0 up的时候, 
+    // 会自动配置路由表配置路由表 192.168.0.0/24 转发到这 bridge_name 的网络接口上
     // set_route(bridge_name, addr);
     set_net(bridge_name, addr);