T2117: Cloud-init updated to 20.4

Merged with 20.4 tag from the upstream Cloud-init repository

1 files changed, 151 insertions, 0 deletions

diff --git a/tests/integration_tests/modules/test_set_password.py b/tests/integration_tests/modules/test_set_password.py
new file mode 100644
index 00000000..b13f76fb
--- /dev/null
+++ b/tests/integration_tests/modules/test_set_password.py
@@ -0,0 +1,151 @@
+"""Integration test for the set_password module.
+
+This test specifies a combination of user/password pairs, and ensures that the
+system has the correct passwords set.
+
+There are two tests run here: one tests chpasswd's list being a YAML list, the
+other tests chpasswd's list being a string.  Both expect the same results, so
+they use a mixin to share their test definitions, because we can (of course)
+only specify one user-data per instance.
+"""
+import crypt
+
+import pytest
+import yaml
+
+
+COMMON_USER_DATA = """\
+#cloud-config
+ssh_pwauth: yes
+users:
+  - default
+  - name: tom
+    # md5 gotomgo
+    passwd: "$1$S7$tT1BEDIYrczeryDQJfdPe0"
+    lock_passwd: false
+  - name: dick
+    # md5 gocubsgo
+    passwd: "$1$ssisyfpf$YqvuJLfrrW6Cg/l53Pi1n1"
+    lock_passwd: false
+  - name: harry
+    # sha512 goharrygo
+    passwd: "$6$LF$9Z2p6rWK6TNC1DC6393ec0As.18KRAvKDbfsGJEdWN3sRQRwpdfoh37EQ3y\
+Uh69tP4GSrGW5XKHxMLiKowJgm/"
+    lock_passwd: false
+  - name: jane
+    # sha256 gojanego
+    passwd: "$5$iW$XsxmWCdpwIW8Yhv.Jn/R3uk6A4UaicfW5Xp7C9p9pg."
+    lock_passwd: false
+  - name: "mikey"
+    lock_passwd: false
+"""
+
+LIST_USER_DATA = COMMON_USER_DATA + """
+chpasswd:
+  list:
+    - tom:mypassword123!
+    - dick:RANDOM
+    - harry:RANDOM
+    - mikey:$5$xZ$B2YGGEx2AOf4PeW48KC6.QyT1W2B4rZ9Qbltudtha89
+"""
+
+STRING_USER_DATA = COMMON_USER_DATA + """
+chpasswd:
+    list: |
+      tom:mypassword123!
+      dick:RANDOM
+      harry:RANDOM
+      mikey:$5$xZ$B2YGGEx2AOf4PeW48KC6.QyT1W2B4rZ9Qbltudtha89
+"""
+
+USERS_DICTS = yaml.safe_load(COMMON_USER_DATA)["users"]
+USERS_PASSWD_VALUES = {
+    user_dict["name"]: user_dict["passwd"]
+    for user_dict in USERS_DICTS
+    if "name" in user_dict and "passwd" in user_dict
+}
+
+
+class Mixin:
+    """Shared test definitions."""
+
+    def _fetch_and_parse_etc_shadow(self, class_client):
+        """Fetch /etc/shadow and parse it into Python data structures
+
+        Returns: ({user: password}, [duplicate, users])
+        """
+        shadow_content = class_client.read_from_file("/etc/shadow")
+        users = {}
+        dupes = []
+        for line in shadow_content.splitlines():
+            user, encpw = line.split(":")[0:2]
+            if user in users:
+                dupes.append(user)
+            users[user] = encpw
+        return users, dupes
+
+    def test_no_duplicate_users_in_shadow(self, class_client):
+        """Confirm that set_passwords has not added duplicate shadow entries"""
+        _, dupes = self._fetch_and_parse_etc_shadow(class_client)
+
+        assert [] == dupes
+
+    def test_password_in_users_dict_set_correctly(self, class_client):
+        """Test that the password specified in the users dict is set."""
+        shadow_users, _ = self._fetch_and_parse_etc_shadow(class_client)
+        assert USERS_PASSWD_VALUES["jane"] == shadow_users["jane"]
+
+    def test_password_in_chpasswd_list_set_correctly(self, class_client):
+        """Test that a chpasswd password overrides one in the users dict."""
+        shadow_users, _ = self._fetch_and_parse_etc_shadow(class_client)
+        mikey_hash = "$5$xZ$B2YGGEx2AOf4PeW48KC6.QyT1W2B4rZ9Qbltudtha89"
+        assert mikey_hash == shadow_users["mikey"]
+
+    def test_random_passwords_set_correctly(self, class_client):
+        """Test that RANDOM chpasswd entries replace users dict passwords."""
+        shadow_users, _ = self._fetch_and_parse_etc_shadow(class_client)
+
+        # These should have been changed
+        assert shadow_users["harry"] != USERS_PASSWD_VALUES["harry"]
+        assert shadow_users["dick"] != USERS_PASSWD_VALUES["dick"]
+
+        # To random passwords
+        assert shadow_users["harry"].startswith("$")
+        assert shadow_users["dick"].startswith("$")
+
+        # Which are not the same
+        assert shadow_users["harry"] != shadow_users["dick"]
+
+    def test_explicit_password_set_correctly(self, class_client):
+        """Test that an explicitly-specified password is set correctly."""
+        shadow_users, _ = self._fetch_and_parse_etc_shadow(class_client)
+
+        fmt_and_salt = shadow_users["tom"].rsplit("$", 1)[0]
+        expected_value = crypt.crypt("mypassword123!", fmt_and_salt)
+
+        assert expected_value == shadow_users["tom"]
+
+    def test_shadow_expected_users(self, class_client):
+        """Test that the right set of users is in /etc/shadow."""
+        shadow = class_client.read_from_file("/etc/shadow")
+        for user_dict in USERS_DICTS:
+            if "name" in user_dict:
+                assert "{}:".format(user_dict["name"]) in shadow
+
+    def test_sshd_config(self, class_client):
+        """Test that SSH password auth is enabled."""
+        sshd_config = class_client.read_from_file("/etc/ssh/sshd_config")
+        # We look for the exact line match, to avoid a commented line matching
+        assert "PasswordAuthentication yes" in sshd_config.splitlines()
+
+
+@pytest.mark.ci
+@pytest.mark.user_data(LIST_USER_DATA)
+class TestPasswordList(Mixin):
+    """Launch an instance with LIST_USER_DATA, ensure Mixin tests pass."""
+
+
+@pytest.mark.ci
+@pytest.mark.user_data(STRING_USER_DATA)
+class TestPasswordListString(Mixin):
+    """Launch an instance with STRING_USER_DATA, ensure Mixin tests pass."""