add SSHPubKey ORM model

Includes `aurweb.models.ssh_pub_key.get_fingerprint(pubkey)` helper.

Signed-off-by: Kevin Morris <kevr@0cost.org>

aurweb/models/ssh_pub_key.py

+import os
+import tempfile
+
+from subprocess import PIPE, Popen
+
+from sqlalchemy.orm import backref, mapper, relationship
+
+from aurweb.models.user import User
+from aurweb.schema import SSHPubKeys
+
+
+class SSHPubKey:
+    def __init__(self, **kwargs):
+        self.UserID = kwargs.get("UserID")
+        self.Fingerprint = kwargs.get("Fingerprint")
+        self.PubKey = kwargs.get("PubKey")
+
+
+def get_fingerprint(pubkey):
+    with tempfile.TemporaryDirectory() as tmpdir:
+        pk = os.path.join(tmpdir, "ssh.pub")
+
+        with open(pk, "w") as f:
+            f.write(pubkey)
+
+        proc = Popen(["ssh-keygen", "-l", "-f", pk], stdout=PIPE, stderr=PIPE)
+        out, err = proc.communicate()
+
+        # Invalid SSH Public Key. Return None to the caller.
+        if proc.returncode != 0:
+            return None
+
+        parts = out.decode().split()
+        fp = parts[1].replace("SHA256:", "")
+
+    return fp
+
+
+mapper(SSHPubKey, SSHPubKeys, properties={
+    "User": relationship(User, backref=backref("ssh_pub_key", uselist=False))
+})

test/test_ssh_pub_key.py

+import pytest
+
+from aurweb.db import query
+from aurweb.models.account_type import AccountType
+from aurweb.models.ssh_pub_key import SSHPubKey, get_fingerprint
+from aurweb.testing import setup_test_db
+from aurweb.testing.models import make_user
+
+TEST_SSH_PUBKEY = """
+ssh-rsa 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 kevr@volcano
+"""
+
+user, ssh_pub_key = None, None
+
+
+@pytest.fixture(autouse=True)
+def setup():
+    from aurweb.db import session
+
+    global user, ssh_pub_key
+
+    setup_test_db("Users", "SSHPubKeys")
+
+    account_type = query(AccountType,
+                         AccountType.AccountType == "User").first()
+    user = make_user(Username="test", Email="test@example.org",
+                     RealName="Test User", Passwd="testPassword",
+                     AccountType=account_type)
+
+    assert account_type == user.AccountType
+    assert account_type.ID == user.AccountTypeID
+
+    ssh_pub_key = SSHPubKey(UserID=user.ID,
+                            Fingerprint="testFingerprint",
+                            PubKey="testPubKey")
+
+    session.add(ssh_pub_key)
+    session.commit()
+
+    yield ssh_pub_key
+
+    session.delete(ssh_pub_key)
+    session.commit()
+
+
+def test_ssh_pub_key():
+    assert ssh_pub_key.UserID == user.ID
+    assert ssh_pub_key.User == user
+    assert ssh_pub_key.Fingerprint == "testFingerprint"
+    assert ssh_pub_key.PubKey == "testPubKey"
+
+
+def test_ssh_pub_key_fingerprint():
+    assert get_fingerprint(TEST_SSH_PUBKEY) is not None
+
+
+def test_ssh_pub_key_invalid_fingerprint():
+    assert get_fingerprint("ssh-rsa fake and invalid") is None

test/test_user.py

@@ -12,6 +12,7 @@ from aurweb.db import query
 from aurweb.models.account_type import AccountType
 from aurweb.models.ban import Ban
 from aurweb.models.session import Session
+from aurweb.models.ssh_pub_key import SSHPubKey
 from aurweb.models.user import User
 from aurweb.testing import setup_test_db
 from aurweb.testing.models import make_session, make_user
@@ -26,7 +27,7 @@ def setup():
 
     global account_type, user
 
-    setup_test_db("Users", "Sessions", "Bans")
+    setup_test_db("Users", "Sessions", "Bans", "SSHPubKeys")
 
     account_type = query(AccountType,
                          AccountType.AccountType == "User").first()
@@ -160,3 +161,20 @@ def test_user_update_password():
 def test_user_minimum_passwd_length():
     passwd_min_len = aurweb.config.getint("options", "passwd_min_len")
     assert User.minimum_passwd_length() == passwd_min_len
+
+
+def test_user_ssh_pub_key():
+    from aurweb.db import session
+
+    assert user.ssh_pub_key is None
+
+    ssh_pub_key = SSHPubKey(UserID=user.ID,
+                            Fingerprint="testFingerprint",
+                            PubKey="testPubKey")
+    session.add(ssh_pub_key)
+    session.commit()
+
+    assert user.ssh_pub_key == ssh_pub_key
+
+    session.delete(ssh_pub_key)
+    session.commit()