Backport | Support old ubuntu netplan

virt-v2v/cold/scripts/rhel/run/network_config_util.sh

@@ -46,6 +46,46 @@ extract_mac_ip() {
     fi
 }
 
+# Get a netplan setting by specifying a nested key like "ethernets.eth0.addresses"
+# For example:
+#    netplan_get_py ethernets
+# Will return the yaml struct of all the thernet interfaces.
+netplan_get_py() {
+    python -c "
+import os
+import yaml
+import sys
+
+netplan_dir = os.getenv('NETPLAN_DIR', '') + '/etc/netplan'
+args = sys.argv[1].split('.')
+
+def find_yaml_files(directory):
+    yaml_files = []
+    for root, dirs, files in os.walk(directory):
+        for file in files:
+            if file.endswith(('.yaml', '.yml')):
+                yaml_files.append(os.path.join(root, file))
+
+    return yaml_files
+
+def get_yaml_path(yaml_data, keys):
+    for key in keys:
+        if yaml_data is None:
+            return None
+        yaml_data = yaml_data.get(key)
+    return yaml_data
+
+yaml_files = find_yaml_files(netplan_dir)
+
+for yaml_file in yaml_files:
+    with open(yaml_file, 'r') as file:
+        yaml_data = yaml.safe_load(file)        
+        result = get_yaml_path(yaml_data, ['network'] + args)
+        if result is not None:
+           print(yaml.dump(result, default_flow_style=False))
+" "$@"
+}
+
 # Network infrastructure reading functions
 # ----------------------------------------
 
@@ -70,7 +110,7 @@ udev_from_ifcfg() {
         fi
 
         # Find the matching network script file
-        IFCFG=$(grep -l "IPADDR=$S_IP" "$NETWORK_SCRIPTS_DIR"/*)
+        IFCFG=$(grep -l "IPADDR=.*$S_IP.*$" "$NETWORK_SCRIPTS_DIR"/*)
         if [ -z "$IFCFG" ]; then
             log "Info: no ifcg config file name foud for $S_IP."
             continue
@@ -108,7 +148,7 @@ udev_from_nm() {
         fi
 
         # Find the matching NetworkManager connection file
-        NM_FILE=$(grep -El "address[0-9]*=$S_IP" "$NETWORK_CONNECTIONS_DIR"/*)
+        NM_FILE=$(grep -El "address[0-9]*=.*$S_IP.*$" "$NETWORK_CONNECTIONS_DIR"/*)
         if [ -z "$NM_FILE" ]; then
             log "Info: no nm config file name foud for $S_IP."
             continue
@@ -133,9 +173,20 @@ udev_from_netplan() {
         return 0
     fi
 
+    # Function to check if netplan supports the 'get' subcommand
+    netplan_supports_get() {
+        netplan get 2>&3
+        return $?
+    }
+
     # netplan with root dir
     netplan_get() {
-        netplan get --root-dir "$NETPLAN_DIR" "$@" 2>/dev/null
+        if netplan_supports_get; then
+            netplan get --root-dir "$NETPLAN_DIR" "$@" 2>&3 
+        else
+            log 'Info: netplan not supporting get subcomment, using python'
+            netplan_get_py "$@" 2>&3
+        fi
     }
 
     # Loop over all interface names and treturn the one with target_ip, or null