Implemented systemd-networkd for installed mediums

Some bug fixes, but mostly added the option to configure **one** network interface.

5 files changed, 117 insertions, 14 deletions

diff --git a/.gitignore b/.gitignore
index 5c83c4aa..955e7784 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,5 @@ SAFETY_LOCK
 **/**.pkg.*.xz
 **/**archinstall-*.tar.gz
 **/**.zst
+**/**.network
+**/**.target
diff --git a/archinstall/lib/installer.py b/archinstall/lib/installer.py
index 775de50a..543f2ca3 100644
--- a/archinstall/lib/installer.py
+++ b/archinstall/lib/installer.py
@@ -6,6 +6,7 @@ from .general import *
 from .user_interaction import *
 from .profiles import Profile
 from .mirrors import *
+from .systemd import Networkd
 from .output import log, LOG_LEVELS
 from .storage import storage
 
@@ -149,6 +150,24 @@ class Installer():
 	def arch_chroot(self, cmd, *args, **kwargs):
 		return self.run_command(cmd)
 
+	def configure_nic(self, nic, dhcp=True, ip=None, gateway=None, dns=None, *args, **kwargs):
+		if dhcp:
+			conf = Networkd(Match={"Name": nic}, Network={"DHCP": "yes"})
+		else:
+			assert ip
+
+			network = {"Address": ip}
+			if gateway:
+				network["Gateway"] = gateway
+			if dns:
+				assert type(dns) == list
+				network["DNS"] = dns
+
+			conf = Networkd(Match={"Name": nic}, Network=network)
+		
+		with open(f"{self.mountpoint}/etc/systemd/network/10-{nic}.network", "a") as netconf:
+			netconf.write(str(conf))
+
 	def minimal_installation(self):
 		## Add nessecary packages if encrypting the drive
 		## (encrypted partitions default to btrfs for now, so we need btrfs-progs)
@@ -273,7 +292,8 @@ class Installer():
 		pass
 
 	def set_keyboard_language(self, language):
-		with open(f'{self.mountpoint}/etc/vconsole.conf', 'w') as vconsole:
-			vconsole.write(f'KEYMAP={language}\n')
-			vconsole.write(f'FONT=lat9w-16\n')
+		if len(language.strip()):
+			with open(f'{self.mountpoint}/etc/vconsole.conf', 'w') as vconsole:
+				vconsole.write(f'KEYMAP={language}\n')
+				vconsole.write(f'FONT=lat9w-16\n')
 		return True
\ No newline at end of file
diff --git a/archinstall/lib/systemd.py b/archinstall/lib/systemd.py
new file mode 100644
index 00000000..edd75098
--- /dev/null
+++ b/archinstall/lib/systemd.py
@@ -0,0 +1,40 @@
+class Ini():
+	def __init__(self, *args, **kwargs):
+		"""
+		Limited INI handler for now.
+		Supports multiple keywords through dictionary list items.
+		"""
+		self.kwargs = kwargs
+
+	def __str__(self):
+		result = ''
+		first_row_done = False
+		for top_level in self.kwargs:
+			if first_row_done:
+				result += f"\n[{top_level}]\n"
+			else:
+				result += f"[{top_level}]\n"
+				first_row_done = True
+
+			for key, val in self.kwargs[top_level].items():
+				if type(val) == list:
+					for item in val:
+						result += f"{key}={item}\n"
+				else:
+					result += f"{key}={val}\n"
+
+		return result
+
+class Systemd(Ini):
+	def __init__(self, *args, **kwargs):
+		"""
+		Placeholder class to do systemd specific setups.
+		"""
+		super(Systemd, self).__init__(*args, **kwargs)
+
+class Networkd(Systemd):
+	def __init__(self, *args, **kwargs):
+		"""
+		Placeholder class to do systemd-network specific setups.
+		"""
+		super(Networkd, self).__init__(*args, **kwargs)
\ No newline at end of file
diff --git a/archinstall/lib/user_interaction.py b/archinstall/lib/user_interaction.py
index 29dfaed2..fdbabe96 100644
--- a/archinstall/lib/user_interaction.py
+++ b/archinstall/lib/user_interaction.py
@@ -24,7 +24,9 @@ def generic_select(options, input_text="Select one of the above by index or abso
 		print(f"{index}: {option}")
 
 	selected_option = input(input_text)
-	if selected_option.isdigit():
+	if len(selected_option.strip()) <= 0:
+		return None
+	elif selected_option.isdigit():
 		selected_option = options[int(selected_option)]
 	elif selected_option in options:
 		pass # We gave a correct absolute value
diff --git a/examples/guided.py b/examples/guided.py
index c0fcd97b..69162244 100644
--- a/examples/guided.py
+++ b/examples/guided.py
@@ -49,20 +49,25 @@ def perform_installation(device, boot_partition, language, mirrors):
 			installation.set_keyboard_language(language)
 			installation.add_bootloader()
 
-			if len(archinstall.storage['_guided']['packages']) and archinstall.storage['_guided']['packages'][0] != '':
+			if archinstall.storage['_guided']['network']:
+				installation.configure_nic(**archinstall.storage['_guided']['network'])
+				installation.enable_service('systemd-networkd')
+
+			if archinstall.storage['_guided']['packages'] and archinstall.storage['_guided']['packages'][0] != '':
 				installation.add_additional_packages(archinstall.storage['_guided']['packages'])
 
 			if 'profile' in archinstall.storage['_guided'] and len(profile := archinstall.storage['_guided']['profile']['path'].strip()):
 				installation.install_profile(profile)
 
-			for user in archinstall.storage['_guided']['users']:
-				password = users[user]
+			if archinstall.storage['_guided']['users']:
+				for user in archinstall.storage['_guided']['users']:
+					password = users[user]
 
-				sudo = False
-				if 'root_pw' not in archinstall.storage['_guided_hidden'] or len(archinstall.storage['_guided_hidden']['root_pw'].strip()) == 0:
-					sudo = True
+					sudo = False
+					if 'root_pw' not in archinstall.storage['_guided_hidden'] or len(archinstall.storage['_guided_hidden']['root_pw'].strip()) == 0:
+						sudo = True
 
-				installation.user_create(user, password, sudo=sudo)
+					installation.user_create(user, password, sudo=sudo)
 
 			if 'root_pw' in archinstall.storage['_guided_hidden'] and archinstall.storage['_guided_hidden']['root_pw']:
 				installation.user_set_pw('root', archinstall.storage['_guided_hidden']['root_pw'])
@@ -77,8 +82,8 @@ archinstall.sys_command(f'cryptsetup close /dev/mapper/luksloop', suppress_error
   will we continue with the actual installation steps.
 """
 
-keyboard_language = archinstall.select_language(archinstall.list_keyboard_languages())
-archinstall.set_keyboard_language(keyboard_language)
+if len(keyboard_language := archinstall.select_language(archinstall.list_keyboard_languages()).strip()):
+	archinstall.set_keyboard_language(keyboard_language)
 
 # Create a storage structure for all our information.
 # We'll print this right before the user gets informed about the formatting timer.
@@ -121,6 +126,7 @@ new_user_text = 'Any additional users to install (leave blank for no users): '
 if len(root_pw.strip()) == 0:
 	new_user_text = 'Create a super-user with sudo privileges: '
 
+archinstall.storage['_guided']['users'] = None
 while 1:
 	new_user = input(new_user_text)
 	if len(new_user.strip()) == 0:
@@ -129,7 +135,7 @@ while 1:
 			continue
 		break
 
-	if 'users' not in archinstall.storage['_guided']:
+	if not archinstall.storage['_guided']['users']:
 		archinstall.storage['_guided']['users'] = []
 	archinstall.storage['_guided']['users'].append(new_user)
 
@@ -167,6 +173,7 @@ while 1:
 		break
 
 # Additional packages (with some light weight error handling for invalid package names)
+archinstall.storage['_guided']['packages'] = None
 while 1:
 	packages = [package for package in input('Additional packages aside from base (space separated): ').split(' ') if len(package)]
 
@@ -180,6 +187,38 @@ while 1:
 	except archinstall.RequirementError as e:
 		print(e)
 
+# Optionally configure one network interface.
+#while 1:
+interfaces = archinstall.list_interfaces() # {MAC: Ifname}
+archinstall.storage['_guided']['network'] = None
+
+nic = archinstall.generic_select(interfaces.values(), "Select one network interface to configure (leave blank to skip): ")
+if nic:
+	mode = archinstall.generic_select(['DHCP (auto detect)', 'IP (static)'], f"Select which mode to configure for {nic}: ")
+	if mode == 'IP (static)':
+		while 1:
+			ip = input(f"Enter the IP and subnet for {nic} (example: 192.168.0.5/24): ").strip()
+			if ip:
+				break
+			else:
+				ArchInstall.log(
+					"You need to enter a valid IP in IP-config mode.",
+					level=archinstall.LOG_LEVELS.Warning,
+					bg='black',
+					fg='red'
+				)
+
+		if not len(gateway := input('Enter your gateway (router) IP address or leave blank for none: ').strip()):
+			gateway = None
+
+		dns = None
+		if len(dns_input := input('Enter your DNS servers (space separated, blank for none): ').strip()):
+			dns = dns_input.split(' ')
+
+		archinstall.storage['_guided']['network'] = {'nic': nic, 'dhcp': False, 'ip': ip, 'gateway' : gateway, 'dns' : dns}
+	else:
+		archinstall.storage['_guided']['network'] = {'nic': nic}
+
 
 print()
 print('This is your chosen configuration:')