Can specify MAC addresses for domains

virtweb_backend/src/constants.rs

@@ -43,3 +43,6 @@ pub const DISK_SIZE_MIN: usize = 100;
 
 /// Disk size max (MB)
 pub const DISK_SIZE_MAX: usize = 1000 * 1000 * 2;
+
+/// Network mac address default prefix
+pub const NET_MAC_ADDR_PREFIX: &str = "52:54:00";

virtweb_backend/src/controllers/server_controller.rs

@@ -14,6 +14,7 @@ struct StaticConfig {
     local_auth_enabled: bool,
     oidc_auth_enabled: bool,
     iso_mimetypes: &'static [&'static str],
+    net_mac_prefix: &'static str,
     constraints: ServerConstraints,
 }
 
@@ -42,6 +43,7 @@ pub async fn static_config(local_auth: LocalAuthEnabled) -> impl Responder {
         local_auth_enabled: *local_auth,
         oidc_auth_enabled: !AppConfig::get().disable_oidc,
         iso_mimetypes: &constants::ALLOWED_ISO_MIME_TYPES,
+        net_mac_prefix: constants::NET_MAC_ADDR_PREFIX,
         constraints: ServerConstraints {
             iso_max_size: constants::ISO_MAX_SIZE,
 

virtweb_backend/src/libvirt_lib_structures.rs

@@ -63,6 +63,13 @@ pub struct FeaturesXML {
 #[serde(rename = "acpi")]
 pub struct ACPIXML {}
 
+#[derive(serde::Serialize, serde::Deserialize)]
+#[serde(rename = "mac")]
+pub struct NetMacAddress {
+    #[serde(rename(serialize = "@address"))]
+    pub address: String,
+}
+
 #[derive(serde::Serialize, serde::Deserialize)]
 #[serde(rename = "source")]
 pub struct NetIntSourceXML {
@@ -75,7 +82,7 @@ pub struct NetIntSourceXML {
 pub struct DomainNetInterfaceXML {
     #[serde(rename(serialize = "@type"))]
     pub r#type: String,
-
+    pub mac: NetMacAddress,
     pub source: Option<NetIntSourceXML>,
 }
 

virtweb_backend/src/libvirt_rest_structures.rs

@@ -3,10 +3,10 @@ use crate::constants;
 use crate::libvirt_lib_structures::{
     DevicesXML, DiskBootXML, DiskDriverXML, DiskReadOnlyXML, DiskSourceXML, DiskTargetXML, DiskXML,
     DomainCPUTopology, DomainCPUXML, DomainInputXML, DomainMemoryXML, DomainNetInterfaceXML,
-    DomainVCPUXML, DomainXML, FeaturesXML, GraphicsXML, NetIntSourceXML, NetworkDHCPRangeXML,
+    DomainVCPUXML, DomainXML, FeaturesXML, GraphicsXML, NetIntSourceXML, NetMacAddress,
-    NetworkDHCPXML, NetworkDNSForwarderXML, NetworkDNSXML, NetworkDomainXML, NetworkForwardXML,
+    NetworkDHCPRangeXML, NetworkDHCPXML, NetworkDNSForwarderXML, NetworkDNSXML, NetworkDomainXML,
-    NetworkIPXML, NetworkXML, OSLoaderXML, OSTypeXML, TPMBackendXML, TPMDeviceXML, VideoModelXML,
+    NetworkForwardXML, NetworkIPXML, NetworkXML, OSLoaderXML, OSTypeXML, TPMBackendXML,
-    VideoXML, XMLUuid, ACPIXML, OSXML,
+    TPMDeviceXML, VideoModelXML, VideoXML, XMLUuid, ACPIXML, OSXML,
 };
 use crate::libvirt_rest_structures::LibVirtStructError::StructureExtraction;
 use crate::utils::disks_utils::Disk;
@@ -65,9 +65,16 @@ pub enum VMArchitecture {
     X86_64,
 }
 
+#[derive(serde::Serialize, serde::Deserialize)]
+pub struct Network {
+    mac: String,
+    #[serde(flatten)]
+    r#type: NetworkType,
+}
+
 #[derive(serde::Serialize, serde::Deserialize)]
 #[serde(tag = "type")]
-pub enum Network {
+pub enum NetworkType {
     UserspaceSLIRPStack,
     DefinedNetwork { network: String }, // TODO : complete network types
 }
@@ -235,12 +242,14 @@ impl VMInfo {
 
         let mut networks = vec![];
         for n in self.networks {
-            networks.push(match n {
+            networks.push(match n.r#type {
-                Network::UserspaceSLIRPStack => DomainNetInterfaceXML {
+                NetworkType::UserspaceSLIRPStack => DomainNetInterfaceXML {
+                    mac: NetMacAddress { address: n.mac },
                     r#type: "user".to_string(),
                     source: None,
                 },
-                Network::DefinedNetwork { network } => DomainNetInterfaceXML {
+                NetworkType::DefinedNetwork { network } => DomainNetInterfaceXML {
+                    mac: NetMacAddress { address: n.mac },
                     r#type: "network".to_string(),
                     source: Some(NetIntSourceXML { network }),
                 },
@@ -382,14 +391,21 @@ impl VMInfo {
                 .devices
                 .net_interfaces
                 .iter()
-                .map(|d| match d.r#type.as_str() {
+                .map(|d| {
-                    "user" => Ok(Network::UserspaceSLIRPStack),
+                    Ok(Network {
-                    "network" => Ok(Network::DefinedNetwork {
+                        mac: d.mac.address.to_string(),
+                        r#type: match d.r#type.as_str() {
+                            "user" => NetworkType::UserspaceSLIRPStack,
+                            "network" => NetworkType::DefinedNetwork {
                                 network: d.source.as_ref().unwrap().network.to_string(),
-                    }),
+                            },
-                    a => Err(LibVirtStructError::DomainExtraction(format!(
+                            a => {
+                                return Err(LibVirtStructError::DomainExtraction(format!(
                                     "Unknown network interface type: {a}! "
-                    ))),
+                                )));
+                            }
+                        },
+                    })
                 })
                 .collect::<Result<Vec<_>, _>>()?,
 

virtweb_frontend/src/api/ServerApi.ts

@@ -5,6 +5,7 @@ export interface ServerConfig {
   local_auth_enabled: boolean;
   oidc_auth_enabled: boolean;
   iso_mimetypes: string[];
+  net_mac_prefix: string;
   constraints: ServerConstraints;
 }
 

virtweb_frontend/src/api/VMApi.ts

@@ -34,10 +34,12 @@ export type VMNetInterface = VMNetUserspaceSLIRPStack | VMNetDefinedNetwork;
 
 export interface VMNetUserspaceSLIRPStack {
   type: "UserspaceSLIRPStack";
+  mac: string;
 }
 
 export interface VMNetDefinedNetwork {
   type: "DefinedNetwork";
+  mac: string;
   network: string;
 }
 

virtweb_frontend/src/utils/RandUtils.ts

@@ -0,0 +1,11 @@
+/**
+ * Generate a random MAC address
+ */
+export function randomMacAddress(prefix: string | undefined): string {
+  let mac = "XX:XX:XX:XX:XX:XX";
+  mac = prefix + mac.slice(prefix?.length);
+
+  return mac.replace(/X/g, () =>
+    "0123456789abcdef".charAt(Math.floor(Math.random() * 16))
+  );
+}

virtweb_frontend/src/widgets/forms/MACInput.tsx

@@ -0,0 +1,46 @@
+import { TextInput } from "./TextInput";
+
+export function MACInput(p: {
+  label: string;
+  editable: boolean;
+  value?: string;
+  onValueChange?: (newVal: string | undefined) => void;
+}): React.ReactElement {
+  const { onValueChange, ...props } = p;
+  return (
+    <TextInput
+      onValueChange={(v) => {
+        onValueChange?.(sanitizeMacAddress(v));
+      }}
+      {...props}
+    />
+  );
+}
+
+function sanitizeMacAddress(s: string | undefined): string | undefined {
+  if (s === "" || s === undefined) return s;
+
+  const split = s.split(":");
+  if (split.length > 6) split.splice(6);
+
+  let needAnotherIteration = false;
+
+  const res = split
+    .map((e) => {
+      if (e === "") return e;
+
+      const num = parseInt(e, 16);
+      if (isNaN(num)) return "0";
+
+      let s = num.toString(16).padStart(2, "0");
+      if (num > 0xff) {
+        needAnotherIteration = true;
+        return s.slice(0, 2) + ":" + s.slice(2);
+      }
+
+      return s;
+    })
+    .join(":");
+
+  return needAnotherIteration ? sanitizeMacAddress(res) : res;
+}

virtweb_frontend/src/widgets/forms/VMNetworksList.tsx

@@ -14,6 +14,9 @@ import { VMInfo, VMNetInterface } from "../../api/VMApi";
 import { useConfirm } from "../../hooks/providers/ConfirmDialogProvider";
 import { SelectInput } from "./SelectInput";
 import { NetworkInfo } from "../../api/NetworksApi";
+import { randomMacAddress } from "../../utils/RandUtils";
+import { ServerApi } from "../../api/ServerApi";
+import { MACInput } from "./MACInput";
 
 export function VMNetworksList(p: {
   vm: VMInfo;
@@ -22,7 +25,10 @@ export function VMNetworksList(p: {
   networksList: NetworkInfo[];
 }): React.ReactElement {
   const addNew = () => {
-    p.vm.networks.push({ type: "UserspaceSLIRPStack" });
+    p.vm.networks.push({
+      type: "UserspaceSLIRPStack",
+      mac: randomMacAddress(ServerApi.Config.net_mac_prefix),
+    });
     p.onChange?.();
   };
 
@@ -120,6 +126,16 @@ function NetworkInfoWidget(p: {
         />
       </ListItem>
       <div style={{ marginLeft: "70px" }}>
+        <MACInput
+          editable={p.editable}
+          label="MAC Address"
+          value={p.network.mac}
+          onValueChange={(v) => {
+            p.network.mac = v!;
+            p.onChange?.();
+          }}
+        />
+
         {p.network.type === "DefinedNetwork" && (
           <SelectInput
             editable={p.editable}