ctrl: tighten CTRL input parsing

Validate that incoming CTRL commands...
- have decimal IDs,
- return error on trailing characters,
- have invalid characters in variable identifiers,
- send detailed error messages as reply to the requestor.

Adjust ctrl_test.{c,ok}, which best show the change in behavior.

Message handling causes log messages on stderr; previously, stderr was empty.
Add '[ignore]' in testsuite.at so that the nonempty stderr doesn't cause test
failures.

Change-Id: I96a9b6b6a3a5e0b80513aa9eaa727ae8c9c7d7a1

1 files changed, 27 insertions, 49 deletions

diff --git a/tests/ctrl/ctrl_test.ok b/tests/ctrl/ctrl_test.ok
index 4a3a1696..087ebbc2 100644
--- a/tests/ctrl/ctrl_test.ok
+++ b/tests/ctrl/ctrl_test.ok
@@ -19,7 +19,7 @@ ok
 test: 'GET 1 variable\n'
 parsing:
 id = '1'
-variable = 'variable\n'
+variable = 'variable'
 value = '(null)'
 reply = '(null)'
 handling:
@@ -28,65 +28,51 @@ ok
 test: 'GET 1 var\ni\nable'
 parsing:
 id = '1'
-variable = 'var\ni\nable'
-value = '(null)'
-reply = '(null)'
+reply = 'GET with trailing characters'
 handling:
-replied: 'ERROR 1 Command not found'
+replied: 'ERROR 1 GET with trailing characters'
 ok
 test: 'GET 1 var\ti\table'
 parsing:
 id = '1'
-variable = 'var\ti\table'
-value = '(null)'
-reply = '(null)'
+reply = 'GET variable contains invalid characters'
 handling:
-replied: 'ERROR 1 Command not found'
+replied: 'ERROR 1 GET variable contains invalid characters'
 ok
 test: 'GET 1 var\ri\rable'
 parsing:
 id = '1'
-variable = 'var\ri\rable'
-value = '(null)'
-reply = '(null)'
+reply = 'GET variable contains invalid characters'
 handling:
-replied: 'ERROR 1 Command not found'
+replied: 'ERROR 1 GET variable contains invalid characters'
 ok
 test: 'GET 1 variable value'
 parsing:
 id = '1'
-variable = 'variable'
-value = '(null)'
-reply = '(null)'
+reply = 'GET with trailing characters'
 handling:
-replied: 'ERROR 1 Command not found'
+replied: 'ERROR 1 GET with trailing characters'
 ok
 test: 'GET 1 variable value\n'
 parsing:
 id = '1'
-variable = 'variable'
-value = '(null)'
-reply = '(null)'
+reply = 'GET with trailing characters'
 handling:
-replied: 'ERROR 1 Command not found'
+replied: 'ERROR 1 GET with trailing characters'
 ok
 test: 'GET 1 variable multiple value tokens'
 parsing:
 id = '1'
-variable = 'variable'
-value = '(null)'
-reply = '(null)'
+reply = 'GET with trailing characters'
 handling:
-replied: 'ERROR 1 Command not found'
+replied: 'ERROR 1 GET with trailing characters'
 ok
 test: 'GET 1 variable multiple value tokens\n'
 parsing:
 id = '1'
-variable = 'variable'
-value = '(null)'
-reply = '(null)'
+reply = 'GET with trailing characters'
 handling:
-replied: 'ERROR 1 Command not found'
+replied: 'ERROR 1 GET with trailing characters'
 ok
 test: 'SET 1 variable value'
 parsing:
@@ -108,21 +94,17 @@ replied: 'ERROR 1 Command not found'
 ok
 test: 'SET weird_id variable value'
 parsing:
-id = 'weird_id'
-variable = 'variable'
-value = 'value'
-reply = '(null)'
+id = 'err'
+reply = 'Invalid message ID number'
 handling:
-replied: 'ERROR weird_id Command not found'
+replied: 'ERROR err Invalid message ID number'
 ok
 test: 'SET weird_id variable value\n'
 parsing:
-id = 'weird_id'
-variable = 'variable'
-value = 'value'
-reply = '(null)'
+id = 'err'
+reply = 'Invalid message ID number'
 handling:
-replied: 'ERROR weird_id Command not found'
+replied: 'ERROR err Invalid message ID number'
 ok
 test: 'SET 1 variable multiple value tokens'
 parsing:
@@ -162,21 +144,17 @@ replied: 'ERROR 1 Command not found'
 ok
 test: 'SET \n special_char_id value'
 parsing:
-id = '\n'
-variable = 'special_char_id'
-value = 'value'
-reply = '(null)'
+id = 'err'
+reply = 'Invalid message ID number'
 handling:
-replied: 'ERROR \n Command not found'
+replied: 'ERROR err Invalid message ID number'
 ok
 test: 'SET \t special_char_id value'
 parsing:
-id = '\t'
-variable = 'special_char_id'
-value = 'value'
-reply = '(null)'
+id = 'err'
+reply = 'Invalid message ID number'
 handling:
-replied: 'ERROR \t Command not found'
+replied: 'ERROR err Invalid message ID number'
 ok
 test: 'GET_REPLY 1 variable OK'
 parsing: