Added REST route to get the list of bridges

virtweb_backend/src/constants.rs

@@ -111,3 +111,6 @@ pub const API_TOKEN_RIGHT_PATH_MAX_LENGTH: usize = 255;
 
 /// Qemu image program path
 pub const QEMU_IMAGE_PROGRAM: &str = "/usr/bin/qemu-img";
+
+/// IP program path
+pub const IP_PROGRAM: &str = "/usr/sbin/ip";

virtweb_backend/src/controllers/server_controller.rs

@@ -188,3 +188,7 @@ pub async fn number_vcpus() -> HttpResult {
 pub async fn networks_list() -> HttpResult {
     Ok(HttpResponse::Ok().json(net_utils::net_list()))
 }
+
+pub async fn bridges_list() -> HttpResult {
+    Ok(HttpResponse::Ok().json(net_utils::bridges_list()?))
+}

virtweb_backend/src/main.rs

@@ -48,6 +48,10 @@ async fn main() -> std::io::Result<()> {
         constants::QEMU_IMAGE_PROGRAM,
         "QEMU disk image utility is required to manipulate QCow2 files!",
     );
+    exec_utils::check_program(
+        constants::IP_PROGRAM,
+        "ip is required to access bridges information!",
+    );
 
     log::debug!("Create required directory, if missing");
     files_utils::create_directory_if_missing(AppConfig::get().iso_storage_path()).unwrap();
@@ -137,6 +141,10 @@ async fn main() -> std::io::Result<()> {
                 "/api/server/networks",
                 web::get().to(server_controller::networks_list),
             )
+            .route(
+                "/api/server/bridges",
+                web::get().to(server_controller::bridges_list),
+            )
             // Auth controller
             .route(
                 "/api/auth/local",

virtweb_backend/src/utils/net_utils.rs

@@ -1,6 +1,8 @@
+use crate::constants;
 use nix::sys::socket::{AddressFamily, SockaddrLike};
 use std::collections::HashMap;
 use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
+use std::process::Command;
 use std::str::FromStr;
 use sysinfo::Networks;
 
@@ -68,7 +70,7 @@ pub fn net_list() -> Vec<String> {
 
 /// Get the list of available network interfaces associated with their IP address
 pub fn net_list_and_ips() -> anyhow::Result<HashMap<String, Vec<IpAddr>>> {
-    let addrs = nix::ifaddrs::getifaddrs().unwrap();
+    let addrs = nix::ifaddrs::getifaddrs()?;
 
     let mut res = HashMap::new();
 
@@ -136,6 +138,31 @@ pub fn net_list_and_ips() -> anyhow::Result<HashMap<String, Vec<IpAddr>>> {
     Ok(res)
 }
 
+#[derive(serde::Deserialize)]
+struct IPBridgeInfo {
+    ifname: String,
+}
+
+/// Get the list of bridge interfaces
+pub fn bridges_list() -> anyhow::Result<Vec<String>> {
+    let mut cmd = Command::new(constants::IP_PROGRAM);
+    cmd.args(["-json", "link", "show", "type", "bridge"]);
+    let output = cmd.output()?;
+    if !output.status.success() {
+        anyhow::bail!(
+            "{} failed, status: {}, stderr: {}",
+            constants::IP_PROGRAM,
+            output.status,
+            String::from_utf8_lossy(&output.stderr)
+        );
+    }
+
+    // Parse JSON result
+    let res: Vec<IPBridgeInfo> = serde_json::from_str(&String::from_utf8_lossy(&output.stdout))?;
+
+    Ok(res.iter().map(|ip| ip.ifname.clone()).collect())
+}
+
 #[cfg(test)]
 mod tests {
     use crate::utils::net_utils::{

virtweb_docs/BRIDGE.md

@@ -38,6 +38,9 @@ sudo netplan apply
 
 ```bash
 sudo brctl show
+
+# Or
+ip link show type bridge
 ```
 
 ## Reference