[arch] fix -> AUR: importing PGP keys

CHANGELOG.md

@@ -58,6 +58,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
     - AUR:
         - info dialog of installed packages displays the latest PKGBUILD file instead of the one used for installation/upgrade/downgrade (the fix will only work for new installed packages)
         - multi-threaded download: not retrieving correctly some source files URLs (e.g: linux-xanmod-lts)
+        - importing PGP keys (Generic error). Now the key server is specified: `gpg --keyserver SERVER --recv-key KEYID` (the server is retrieved from [bauh-files](https://github.com/vinifmor/bauh-files/blob/master/arch/gpgservers.txt))
 - Flatpak
     - downgrading crashing with version 1.8.X
     - history: the top commit is returned as "(null)" in version 1.8.X

bauh/gems/arch/__init__.py

@@ -10,6 +10,7 @@ PACKAGE_CACHE_DIR = '{}/pkg_cache'.format(BUILD_DIR)
 ARCH_CACHE_PATH = CACHE_PATH + '/arch'
 CATEGORIES_FILE_PATH = ARCH_CACHE_PATH + '/categories.txt'
 URL_CATEGORIES_FILE = 'https://raw.githubusercontent.com/vinifmor/bauh-files/master/arch/categories.txt'
+URL_GPG_SERVERS = 'https://raw.githubusercontent.com/vinifmor/bauh-files/master/arch/gpgservers.txt'
 CONFIG_DIR = '{}/.config/bauh/arch'.format(str(Path.home()))
 CUSTOM_MAKEPKG_FILE = '{}/makepkg.conf'.format(CONFIG_DIR)
 AUR_INDEX_FILE = '{}/arch.txt'.format(BUILD_DIR)

bauh/gems/arch/controller.py

@@ -33,7 +33,7 @@ from bauh.commons.view_utils import new_select
 from bauh.gems.arch import BUILD_DIR, aur, pacman, makepkg, message, confirmation, disk, git, \
     gpg, URL_CATEGORIES_FILE, CATEGORIES_FILE_PATH, CUSTOM_MAKEPKG_FILE, SUGGESTIONS_FILE, \
     CONFIG_FILE, get_icon_path, database, mirrors, sorting, cpu_manager, ARCH_CACHE_PATH, UPDATES_IGNORED_FILE, \
-    CONFIG_DIR, EDITABLE_PKGBUILDS_FILE
+    CONFIG_DIR, EDITABLE_PKGBUILDS_FILE, URL_GPG_SERVERS
 from bauh.gems.arch.aur import AURClient
 from bauh.gems.arch.config import read_config
 from bauh.gems.arch.dependencies import DependenciesAnalyser
@@ -1789,7 +1789,11 @@ class ArchManager(SoftwareManager):
                                                         body=self.i18n['arch.install.aur.unknown_key.body'].format(bold(context.name), bold(check_res['gpg_key']))):
                     context.watcher.change_substatus(self.i18n['arch.aur.install.unknown_key.status'].format(bold(check_res['gpg_key'])))
                     self.logger.info("Importing GPG key {}".format(check_res['gpg_key']))
-                    if not context.handler.handle(gpg.receive_key(check_res['gpg_key'])):
+
+                    gpg_res = self.context.http_client.get(URL_GPG_SERVERS)
+                    gpg_server = gpg_res.text.split('\n')[0] if gpg_res else None
+
+                    if not context.handler.handle(gpg.receive_key(check_res['gpg_key'], gpg_server)):
                         self.logger.error("An error occurred while importing the GPG key {}".format(check_res['gpg_key']))
                         context.watcher.show_message(title=self.i18n['error'].capitalize(),
                                                      body=self.i18n['arch.aur.install.unknown_key.receive_error'].format(bold(check_res['gpg_key'])))

bauh/gems/arch/gpg.py

@@ -1,5 +1,14 @@
+from typing import Optional
+
 from bauh.commons.system import SystemProcess, new_subprocess
 
 
-def receive_key(key: str) -> SystemProcess:
+def receive_key(key: str, server: Optional[str] = None) -> SystemProcess:
-    return SystemProcess(new_subprocess(['gpg', '--recv-key', key]), check_error_output=False)
+    cmd = ['gpg']
+
+    if server:
+        cmd.extend(['--keyserver', server])
+
+    cmd.extend(['--recv-key', key])
+
+    return SystemProcess(new_subprocess(cmd), check_error_output=False)