Source Code for Module fcp.invertkey

 1  #@+leo-ver=4 
 2  #@+node:@file invertkey.py 
 3  """ 
 4  invert an SSK/USK private key to its public equivalent 
 5   
 6  This is the guts of the command-line front-end app fcpinvertkey 
 7  """ 
 8   
 9  #@+others 
10  #@+node:imports 
11  import argparse 
12  import sys 
13  import traceback 
14   
15  from . import node 
16  from .arguments import add_default_arguments 
17   
18  #@-node:imports 
19  #@+node:create_parser 
20 -def create_parser(): 
21      ''' 
22      Creates an argparse parser. 
23      ''' 
24      parser = argparse.ArgumentParser( 
25          prog='fcpinvertkey', 
26          description='Convert a freenet SSK/USK private URI into its public equivalent.' 
27      ) 
28      add_default_arguments(parser) 
29   
30      parser.add_argument( 
31          'uri', 
32          nargs='?', 
33          help=''' 
34              A freenet SSK/USK private URI 
35          ''', 
36      ) 
37   
38      return parser 
39   
40  #@-node:create_parser 
41  #@+node:main 
42 -def main(): 
43      """ 
44      Front end for fcpget utility 
45      """ 
46      # default job options 
47      verbosity = node.ERROR 
48      verbose = False 
49   
50      parser = create_parser() 
51      args = parser.parse_args() 
52   
53      # try to create the node 
54      try: 
55          n = node.FCPNode(host=args.fcphost, port=args.fcpport, verbosity=verbosity, 
56                           logfile=sys.stderr) 
57      except: 
58          if verbose: 
59              traceback.print_exc(file=sys.stderr) 
60          sys.stderr.write("Failed to connect to FCP service at %s:%s\n" % (args.fcphost, args.fcpport)) 
61   
62      # determine the uri 
63      if not args.uri: 
64          args.uri = raw_input('Enter a URI: ') 
65   
66      uri = args.uri.strip() 
67   
68      # do the invert 
69      uriPub = n.invertprivate(args.uri) 
70   
71      n.shutdown() 
72   
73      # successful, return the uri 
74      sys.stdout.write(uriPub) 
75      sys.stdout.flush() 
76   
77      # all done 
78      sys.exit(0) 
79   
80  #@-node:main 
81  #@-others 
82   
83  #@-node:@file invertkey.py 
84  #@-leo 
85