1 files changed, 35 insertions, 4 deletions
diff --git a/src/config.rs b/src/config.rs
index d9dbe74..181f099 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,6 +1,7 @@
 use crate::dyndns_service::DynDnsProvider;
 use crate::error::{AppError, AppResult};
 use crate::ip_service::IpServiceProvider;
+use crate::network::get_active_network_adapters;
 use fqdn::FQDN;
 use log::warn;
 use serde::{Deserialize, Serialize};
@@ -50,6 +51,17 @@ impl Config {
 
         Err(AppError::ConfigFileNotProvided)
     }
+
+    pub fn validate(self) -> AppResult<Self> {
+        let interfaces: Vec<String> = self.networks.iter().filter_map(|network| network.interface.clone()).collect();
+        if !interfaces.is_empty() {
+            let adapters = get_active_network_adapters()?;
+            adapters.iter().find(|adapter| interfaces.contains(&adapter.name))
+                .ok_or(AppError::UnableToFindNetworkInterface(interfaces.join(",")))?;
+        }
+
+        Ok(self)
+    }
 }
 
 #[derive(Debug, Deserialize, Serialize)]
@@ -80,6 +92,12 @@ pub struct DnsRecord {
     record_type: DnsRecordType,
 }
 
+impl DnsRecord {
+    pub fn new(fqdn: FQDN) -> Self {
+        Self { fqdn, ttl: default_ttl(), record_type: default_record_type() }
+    }
+}
+
 fn default_record_type() -> DnsRecordType {
     DnsRecordType::A
 }
@@ -92,10 +110,7 @@ mod tests {
     use super::*;
     use crate::dyndns_service::DynDnsProvider::Gandi;
     use crate::dyndns_service::gandi::GandiConfig;
-    use crate::{
-        assert_config_file_not_found, assert_config_parse_error, assert_error, assert_io_error,
-        test,
-    };
+    use crate::{assert_config_file_not_found, assert_config_parse_error, assert_error, assert_io_error, assert_unable_to_find_network_interface_error, test};
     use serde_json::json;
     use std::fs::read_dir;
     use std::path::{Path, PathBuf};
@@ -190,4 +205,20 @@ mod tests {
             assert_io_error!(Config::load(vec![path.to_path_buf()]));
         }
     }
+
+    test! {
+        fn unknown_network_interface() {
+            let config = Config {
+                networks: vec![WanConfig {
+                    interface: Some("unknown0".to_string()),
+                    dns_record: DnsRecord::new(FQDN::from_str("some.domain.com")?),
+                    providers: vec![DynDnsProvider::Noop],
+                    ip_service: IpServiceProvider::Noop,
+                }]
+            };
+
+            assert_unable_to_find_network_interface_error!(config.validate(), "unknown0");
+        }
+    }
+
 }