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backup: improve error reporting about passphrase retrieval

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QubesOS/qubes-issues#2931
This commit is contained in:
Marek Marczykowski-Górecki 2017-07-29 04:41:38 +02:00
parent bde8d45cca
commit 27ce27b6e9
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GPG Key ID: 063938BA42CFA724
1 changed files with 11 additions and 2 deletions
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13
qubes/api/admin.py
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@ -27,6 +27,7 @@ import functools
import itertools
import os
import string
import subprocess
import libvirt
import pkg_resources
@ -1146,8 +1147,16 @@ class QubesAdminAPI(qubes.api.AbstractQubesAPI):
except KeyError:
raise qubes.exc.QubesException(
'Invalid backup profile - invalid passphrase_vm')
passphrase, _ = yield from passphrase_vm.run_service_for_stdio(
'qubes.BackupPassphrase+' + self.arg)
try:
passphrase, _ = yield from passphrase_vm.run_service_for_stdio(
'qubes.BackupPassphrase+' + self.arg)
# make it foolproof against "echo passphrase" implementation
passphrase = passphrase.strip()
assert b'\n' not in passphrase
except subprocess.CalledProcessError:
raise qubes.exc.QubesException(
'Failed to retrieve passphrase from \'{}\' VM'.format(
passphrase_vm_name))
else:
raise qubes.exc.QubesException(
'Invalid backup profile - you need to '