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diff -up hplip-3.20.3/base/tui.py.keyserver hplip-3.20.3/base/tui.py
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--- hplip-3.20.3/base/tui.py.keyserver	2020-03-10 09:01:53.000000000 +0100
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+++ hplip-3.20.3/base/tui.py	2020-04-07 08:44:44.319710001 +0200
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@@ -241,6 +241,7 @@ class ProgressMeter(object):
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         sys.stdout.write(y)
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         sys.stdout.flush()
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+        sys.stdout.write('\n')
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         self.prev_length = len(y)
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         self.spinner_pos = (self.spinner_pos + 1) % 8
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diff -up hplip-3.20.3/base/validation.py.keyserver hplip-3.20.3/base/validation.py
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--- hplip-3.20.3/base/validation.py.keyserver	2020-03-10 09:01:53.000000000 +0100
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+++ hplip-3.20.3/base/validation.py	2020-04-07 08:45:46.657132415 +0200
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@@ -1,4 +1,4 @@
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-#!/usr/bin/env python
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+#!/usr/bin/python3
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 # -*- coding: utf-8 -*-
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 #
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 # (c) Copyright 2015 HP Development Company, L.P.
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@@ -42,8 +42,11 @@ class DigiSign_Verification(object):
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 class GPG_Verification(DigiSign_Verification):
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-    def __init__(self, pgp_site = 'pgp.mit.edu', key = 0x4ABA2F66DBD5A95894910E0673D770CDA59047B9):
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-        self.__pgp_site = pgp_site
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+    def __init__(self, keyservers = ['pool.sks-keyservers.net',
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+                                     'keyserver.ubuntu.com',
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+                                     'sks-keyservers.net', 'pgp.mit.edu'],
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+                 key = 0x4ABA2F66DBD5A95894910E0673D770CDA59047B9):
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+        self.__keyservers = keyservers
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         self.__key = key
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         self.__gpg = utils.which('gpg',True)
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@@ -82,13 +85,18 @@ class GPG_Verification(DigiSign_Verifica
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     def __acquire_gpg_key(self):
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-
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-        cmd = '%s --homedir %s --no-permission-warning --keyserver %s --recv-keys 0x%X' \
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-              % (self.__gpg, self.__gpg_dir, self.__pgp_site, self.__key)
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-
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-        log.info("Receiving digital keys: %s" % cmd)
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-        status, output = utils.run(cmd)
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-        log.debug(output)
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+        for kserver in self.__keyservers:
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+            cmd = '%s --homedir %s --no-permission-warning --keyserver %s --recv-keys 0x%X' \
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+                  % (self.__gpg, self.__gpg_dir, kserver, self.__key)
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+
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+            log.info("Receiving digital keys: %s" % cmd)
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+            status, output = utils.run(cmd)
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+            log.debug(output)
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+
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+            if not status:
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+                break
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+            log.info("Receiving keys from {} failed, trying the next keyserver."
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+                     .format(kserver))
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         self.__change_owner(True)
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