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Rework check_globbing to reduce false positives

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First, globbing can only be the cause of a mess up if the given
noderange is a file that matches.

With this we still have:
for node in $(nodelist compute); do nodepower $node; done
As a potential false positive if any node is a range.

For this, offer suggestion of changing directories.

Also, if it had been:
for NODE in $(nodelist compute); do export NODE; nodepower $NODE; done

Another clause can detect that, which has been added.
This commit is contained in:
Jarrod Johnson 2017-11-27 10:04:23 -05:00
parent 4bef5f7917
commit d69cca46d0
1 changed files with 11 additions and 2 deletions
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13
confluent_client/confluent/client.py
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@ -469,15 +469,24 @@ def updateattrib(session, updateargs, nodetype, noderange, options):
# if we glob to something, then bash will change noderange and this should
# detect it and save the user from tragedy
def check_globbing(noderange):
if not os.path.exists(noderange):
return True
rawargs = os.environ.get('CURRENT_CMDLINE', None)
if rawargs:
rawargs = shlex.split(rawargs)
for arg in rawargs:
if arg.startswith('$'):
arg = arg[1:]
if arg.endswith(';'):
arg = arg[:-1]
arg = os.environ.get(arg, '$' + arg)
if arg.startswith(noderange):
break
else:
sys.stderr.write(
'Shell glob conflict detected, specified target {0} '
'not in command line (if bash, try set -f)'
'Shell glob conflict detected, specified target "{0}" '
'not in command line, but is a file. You can use "set -f" in '
'bash or change directories such that there is no filename '
'that would conflict.'
'\n'.format(noderange))
sys.exit(1)