ceph_argparse.py, cephtool/test.sh: fix blacklist with no nonce

It's legal to give a CephEntityAddr to osd blacklist with no nonce,
so allow it in the valid() method; also add validation of any nonce
given that it's a long >= 0.

Also fix comment on CephEntityAddr type description in MonCommands.h,
and add tests for invalid nonces (while fixing the existing tests to remove
the () around expect_false args).

Fixes: #6425
Signed-off-by: Dan Mick <dan.mick@inktank.com>

qa/workunits/cephtool/test.sh

@@ -169,7 +169,16 @@ bl=192.168.0.1:0/1000
 ceph osd blacklist add $bl
 ceph osd blacklist ls | grep $bl
 ceph osd blacklist rm $bl
-expect_false "(ceph osd blacklist ls | grep $bl)"
+expect_false "ceph osd blacklist ls | grep $bl"
+
+bl=192.168.0.1
+# test without nonce, invalid nonce
+ceph osd blacklist add $bl
+ceph osd blacklist ls | grep $bl
+ceph osd blacklist rm $bl
+expect_false "ceph osd blacklist ls | grep $bl"
+expect_false "ceph osd blacklist $bl/-1"
+expect_false "ceph osd blacklist $bl/foo"
 
 ceph osd crush tunables legacy
 ceph osd crush tunables bobtail

src/mon/MonCommands.h

@@ -59,7 +59,7 @@
  * CephString: optional badchars
  * CephSocketpath: validation involves "is it S_ISSOCK"
  * CephIPAddr: v4 or v6 addr with optional port, syntax validated
- * CephEntityAddr: CephIPAddr + '/nonce'
+ * CephEntityAddr: CephIPAddr + optional '/nonce'
  * CephPoolname: Plainold string
  * CephObjectname: Another plainold string
  * CephPgid: n.xxx where n is an int > 0, xxx is a hex number > 0

src/pybind/ceph_argparse.py

@@ -275,12 +275,26 @@ class CephIPAddr(CephArgtype):
 
 class CephEntityAddr(CephIPAddr):
     """
-    EntityAddress, that is, IP address/nonce
+    EntityAddress, that is, IP address[/nonce]
     """
     def valid(self, s, partial=False):
-        ip, nonce = s.split('/')
+        nonce = None
+        if '/' in s:
+            ip, nonce = s.split('/')
+        else:
+            ip = s
         super(self.__class__, self).valid(ip)
-        self.nonce = nonce
+        if nonce:
+            nonce_long = None
+            try:
+                nonce_long = long(nonce)
+            except ValueError:
+                pass
+            if nonce_long is None or nonce_long < 0:
+                raise ArgumentValid(
+                    '{0}: invalid entity, nonce {1} not integer > 0'.\
+                    format(s, nonce)
+                )
         self.val = s
 
     def __str__(self):