add PAM plugin to test suite

.coveragerc

@@ -3,6 +3,7 @@ branch = True
 source =
     pymysql
 omit = pymysql/test/*
+       pymysql/tests/thirdparty/test_MySQLdb/*
 
 
 [report]

.travis.yml

@@ -2,8 +2,7 @@ sudo: false
 language: python
 python: "3.4"
 cache:
-    directories:
+    - pip
-        - mysql
 
 env:
     matrix:
@@ -27,6 +26,7 @@ matrix:
           env:
              - TOX_ENV=py33
              - EXTRAPKG=mariadb-test
+             - PAMCLEAR=1
           sudo: required
         - addons:
              mariadb: 10.1
@@ -41,6 +41,9 @@ matrix:
               apt:
                  packages:
                      - libaio-dev
+          cache:
+              directories:
+                  - mysql
 # really only need libaio1 however libaio-dev is whitelisted
 #
 # http://dev.mysql.com/downloads/mysql/5.7.html
@@ -52,6 +55,10 @@ install:
     - if [ -n "${EXTRAPKG}" ]; then
           sudo apt-get install ${EXTRAPKG};
       fi
+    - if [ -n "${PAMCLEAR}" ]; then
+          echo -e '[mysqld]\n\nplugin-load=auth_pam.so\npam-use-cleartext-plugin' | sudo tee -a /etc/mysql/pam-cleartext.cnf;
+          sudo service mysql restart;
+      fi
     - pip install -U tox coveralls
 
 before_script:
@@ -80,6 +87,8 @@ before_script:
     - export COVERALLS_PARALLEL=true
 
 script:
+    - export PAMSERVICE=chfn
+    - export PASSWORD=travis
     - tox -e $TOX_ENV
 
 after_success:

pymysql/tests/test_connection.py

@@ -165,6 +165,9 @@ class TestAuthentication(base.PyMySQLTestCase):
                     break
             return pkt
 
+    class DefectiveHandler(object):
+        def __init__(self, con):
+            self.con=con
 
 
     @unittest2.skipUnless(socket_auth, "connection to unix_socket required")
@@ -227,11 +230,8 @@ class TestAuthentication(base.PyMySQLTestCase):
             with self.assertRaises(pymysql.err.OperationalError):
                 pymysql.connect(user='pymysql_3a', plugin_map={b'dialog': object}, **self.db)
 
-            class DefectiveHandler(object):
-                def __init__(self, con):
-                    self.con=con
             with self.assertRaises(pymysql.err.OperationalError):
-                pymysql.connect(user='pymysql_3a', plugin_map={b'dialog': DefectiveHandler}, **self.db)
+                pymysql.connect(user='pymysql_3a', plugin_map={b'dialog': TestAuthentication.DefectiveHandler}, **self.db)
             with self.assertRaises(pymysql.err.OperationalError):
                 pymysql.connect(user='pymysql_3a', plugin_map={b'notdialogplugin': TestAuthentication.Dialog}, **self.db)
             TestAuthentication.Dialog.m = {b'Password, please:': b'I do not know'}
@@ -241,19 +241,46 @@ class TestAuthentication(base.PyMySQLTestCase):
             with self.assertRaises(pymysql.err.OperationalError):
                 pymysql.connect(user='pymysql_3a', plugin_map={b'dialog': TestAuthentication.Dialog}, **self.db)
 
+    @unittest2.skipUnless(socket_auth, "connection to unix_socket required")
+    @unittest2.skipIf(pam_found, "pam plugin already installed")
+    @unittest2.skipIf(os.environ.get('PASSWORD') is None, "PASSWORD env var required")
+    @unittest2.skipIf(os.environ.get('PAMSERVICE') is None, "PAMSERVICE env var required")
+    def testPamAuthInstallPlugin(self):
+        # needs plugin. lets install it.
+        cur = self.connections[0].cursor()
+        try:
+            cur.execute("install plugin pam soname 'auth_pam.so'")
+            TestAuthentication.pam_found = True
+            self.realTestPamAuth()
+        except pymysql.err.InternalError:
+            raise unittest2.SkipTest('we couldn\'t install the auth_pam plugin')
+        finally:
+            if TestAuthentication.pam_found:
+                cur.execute("uninstall plugin pam")
+
+
     @unittest2.skipUnless(socket_auth, "connection to unix_socket required")
     @unittest2.skipUnless(pam_found, "no pam plugin")
+    @unittest2.skipIf(os.environ.get('PASSWORD') is None, "PASSWORD env var required")
+    @unittest2.skipIf(os.environ.get('PAMSERVICE') is None, "PAMSERVICE env var required")
     def testPamAuth(self):
+        self.realTestPamAuth()
+
+    def realTestPamAuth(self):
         db = self.db.copy()
-        db['password'] = b'bad guess at password'
+        import os
+        db['password'] = os.environ.get('PASSWORD')
+
         with TempUser(self.connections[0].cursor(), TestAuthentication.osuser + '@localhost',
-                      self.databases[0]['db'], self.pam_plugin_name) as u:
+                      self.databases[0]['db'], 'pam', os.environ.get('PAMSERVICE')) as u:
             try:
                c = pymysql.connect(user=TestAuthentication.osuser, **db)
             except pymysql.OperationalError as e:
                self.assertEqual(1045, e.args[0])
                return
             # else we had 'bad guess at password' work with pam. Well cool
+            with self.assertRaises(pymysql.err.OperationalError):
+                pymysql.connect(user=TestAuthentication.osuser + '@localhost', plugin_map={b'mysql_cleartext_password': TestAuthentication.DefectiveHandler}, **self.db)
 
     # select old_password("crummy p\tassword");
     #| old_password("crummy p\tassword") |

tox.ini

@@ -6,3 +6,5 @@ commands = coverage run ./runtests.py
 deps = unittest2
        coverage
 passenv = USER
+          PASSWORD
+          PAMSERVICE