Rewrite get_tls_requires using mysql.user table

plugins/module_utils/user.py

@@ -81,28 +81,45 @@ def do_not_mogrify_requires(query, params, tls_requires):
 
 
 def get_tls_requires(cursor, user, host):
-    if user:
-        if not impl.use_old_user_mgmt(cursor):
-            query = "SHOW CREATE USER '%s'@'%s'" % (user, host)
-        else:
-            query = "SHOW GRANTS for '%s'@'%s'" % (user, host)
+    """Get user TLS requirements.
 
-        cursor.execute(query)
-        require_list = [tuple[0] for tuple in filter(lambda x: "REQUIRE" in x[0], cursor.fetchall())]
-        require_line = require_list[0] if require_list else ""
-        pattern = r"(?<=\bREQUIRE\b)(.*?)(?=(?:\bPASSWORD\b|$))"
-        requires_match = re.search(pattern, require_line)
-        requires = requires_match.group().strip() if requires_match else ""
-        if any((requires.startswith(req) for req in ('SSL', 'X509', 'NONE'))):
-            requires = requires.split()[0]
-            if requires == 'NONE':
-                requires = None
-        else:
-            import shlex
+    Args:
+        cursor (cursor): DB driver cursor object.
+        user (str): User name.
+        host (str): User host name.
 
-            items = iter(shlex.split(requires))
-            requires = dict(zip(items, items))
-        return requires or None
+    Returns: Dictionary containing current TLS required
+    """
+    tls_requires = dict()
+
+    query = ('SELECT ssl_type, ssl_cipher, x509_issuer, x509_subject '
+             'FROM mysql.user WHERE User = %s AND Host = %s')
+    cursor.execute(query, (user, host))
+    res = cursor.fetchone()
+
+    # Mysql_info use a DictCursor so we must convert back to a list
+    # otherwise we get KeyError 0
+    if isinstance(res, dict):
+        res = list(res.values())
+
+    if not res:
+        return None
+
+    if res[0] == 'ANY':
+        return {'SSL': ''}
+
+    if res[0] == 'X509':
+        return {'X509': ''}
+
+    if res[1]:
+        tls_requires['CIPHER'] = res[1]
+
+    if res[2]:
+        tls_requires['ISSUER'] = res[2]
+
+    if res[3]:
+        tls_requires['SUBJECT'] = res[3]
+    return tls_requires
 
 
 def get_grants(cursor, user, host):