samba tool - tests: Fix shell metacharacters in generated password

Restrict the random password to [A-Za-z0-9] to ensure there are no shell
metacharacters in the generated password.

The tests use "samba-tool user create" to create the test user.
Occasionally the generated password contained shell metachatacters and
the command failed.

Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Fri Jun  9 09:50:28 CEST 2017 on sn-devel-144

2 files changed, 16 insertions, 4 deletions

diff --git a/python/samba/tests/samba_tool/user_virtualCryptSHA.py b/python/samba/tests/samba_tool/user_virtualCryptSHA.py
index 31c681dcfba..3ac4661a46e 100644
--- a/python/samba/tests/samba_tool/user_virtualCryptSHA.py
+++ b/python/samba/tests/samba_tool/user_virtualCryptSHA.py
@@ -31,9 +31,15 @@ from samba import dsdb
 import binascii
 import md5
 import re
-
-USER_NAME = "CyyptSHATestUser"
-USER_PASS = samba.generate_random_password(32,32)
+import random
+import string
+
+USER_NAME = "CryptSHATestUser"
+# Create a random 32 character password, containing only letters and
+# digits to avoid issues when used on the command line.
+USER_PASS = ''.join(random.choice(string.ascii_uppercase +
+                                  string.ascii_lowercase +
+                                  string.digits) for _ in range(32))
 HASH_OPTION = "password hash userPassword schemes"
 
 # Get the value of an attribute from the output string
diff --git a/python/samba/tests/samba_tool/user_wdigest.py b/python/samba/tests/samba_tool/user_wdigest.py
index ff084200e15..b531ad0a33c 100644
--- a/python/samba/tests/samba_tool/user_wdigest.py
+++ b/python/samba/tests/samba_tool/user_wdigest.py
@@ -33,9 +33,15 @@ from samba.dcerpc import drsblobs
 import binascii
 import md5
 import re
+import random
+import string
 
 USER_NAME = "WdigestTestUser"
-USER_PASS = samba.generate_random_password(32, 32)
+# Create a random 32 character password, containing only letters and
+# digits to avoid issues when used on the command line.
+USER_PASS = ''.join(random.choice(string.ascii_uppercase +
+                                  string.ascii_lowercase +
+                                  string.digits) for _ in range(32))
 
 # Calculate the MD5 password digest from the supplied user, realm and password
 #