3 # Interactively prompts for variable values
4 # expected arguments are
5 # command -d [default-xml [custom-xml [ consolidated-xml ]]]
7 # -d is for the myplc-devel package
9 # we use 3 instances of PLCConfiguration throughout:
10 # cdef : models the defaults, from plc_default.xml
11 # cread : merged from plc_default & configs/site.xml
12 # cwrite : site.xml + pending changes
19 import distutils.file_util
20 from optparse import OptionParser
22 from sfa.util.config import Config
23 from sfa.trust.hierarchy import *
24 from sfa.util.misc import *
27 all_variables = ["GENI_REGISTRY_ROOT_AUTH",
28 "GENI_REGISTRY_LEVEL1_AUTH",
29 "GENI_REGISTRY_ENABLED",
32 "GENI_AGGREGATE_ENABLED",
33 "GENI_AGGREGATE_HOST",
34 "GENI_AGGREGATE_PORT",
45 "GENI_PLC_DB_PASSWORD",
47 usual_variables = ["GENI_REGISTRY_ROOT_AUTH",
48 "GENI_REGISTRY_LEVEL1_AUTH",
53 "GENI_PLC_DB_PASSWORD",
57 mainloop_usage= """Available commands:
58 u/U\t\t\tEdit usual variables
59 w/W\t\t\tWrite / Write & reload
60 q\t\t\tQuit (without saving)
63 l/L [<var>]\tShow Locally modified variables/values
64 s/S [<var>]\tShow all current variables/values
65 e/E [<var>]\tEdit variables (all, in category, single)
69 command_usage="%prog [options]"
71 Unless you specify the -d option, meaning you want to configure
72 using defaults without interactive prompts"""
74 variable_usage= """Edit Commands :
75 .\tStops prompting, return to mainloop
76 =\tShows default value
80 def save_config(changes, config_file):
81 # always validate before saving
82 changes = validate(changes)
84 cfile = open(config_file, 'r')
85 lines = cfile.readlines()
90 for variable in changes:
91 if line.startswith(variable+'='):
93 value = int(changes[variable])
94 newline = '%s=%s\n' % (variable, value)
95 newlines.append(newline)
97 value = changes[variable]
98 newline = '%s="%s"\n' % (variable, value)
99 newlines.append(newline)
103 newlines.append(line)
105 cfile = open(config_file, 'w')
106 cfile.writelines(newlines)
108 print 'updated config file',config_file
110 def validate(changes):
115 defaults = get_defaults()
117 # GENI_INTERFACE_HRN is GENI_REGISTRY_LEVEL1_AUTH, if thats blank it
118 # then defaults to GENI_REGISTRY_ROOT_AUTH
119 # GENI_REGISTRY_LEVEL1_AUTH, so if either of these are present we must
120 # update GENI_INTERFACE_HRN
121 if 'GENI_REGISTRY_ROOT_AUTH' in changes:
122 root_auth = changes['GENI_REGISTRY_ROOT_AUTH']
124 root_auth = defaults['GENI_REGISTRY_ROOT_AUTH']
126 if 'GENI_REGISTRY_LEVEL1_AUTH' in changes:
127 level1_auth = changes['GENI_REGISTRY_LEVEL1_AUTH']
129 level1_auth = defaults['GENI_REGISTRY_LEVEL1_AUTH']
132 interface_hrn = level1_auth
134 interface_hrn = root_auth
135 changes['GENI_INTERFACE_HRN'] = interface_hrn
139 sfa_config = Config()
142 for var in dir(sfa_config):
143 if var.startswith('GENI'):
144 value = eval("sfa_config.%s" % var)
145 defaults[var] = value
149 def prompt_variable(variable, default_config):
150 if variable in default_config:
151 default_value = default_config[variable]
156 prompt = "%(variable)s : [%(default_value)s] " % locals()
158 answer = raw_input(prompt).strip()
160 raise Exception ('BailOut')
161 except KeyboardInterrupt:
163 raise Exception ('BailOut')
165 if (answer == "") or (answer == default_value):
167 elif answer in ['""', "''"]:
169 elif (answer == "."):
170 raise Exception ('BailOut')
171 elif (answer == "?"):
172 print variable_usage.strip()
173 elif (answer == "="):
174 print ("%s defaults to %s" %(variable,default_value))
178 def show_variable(variable, value_dict):
179 print "%s=%s" % (variable, value_dict[variable])
181 def mainloop (default_config, config_file):
185 answer = raw_input("Enter command (u for usual changes, w to save, ? for help) ").strip()
188 except KeyboardInterrupt:
192 if (answer == "") or (answer in "?hH"):
198 if (answer in ["q","Q"]):
200 elif (answer == "w"):
201 save_config(changes, config_file)
202 elif (answer == "u"):
204 for varname in usual_variables:
205 changes[varname] = prompt_variable(varname, default_config)
206 except Exception, inst:
207 if (str(inst) != 'BailOut'):
209 elif (answer in ["e","E"]):
211 prompt_variable (cdef,cread,cwrite,category,variable,
213 except Exception, inst:
214 if (str(inst) != 'BailOut'):
216 elif (answer in "sS"):
217 for varname in usual_variables:
218 show_variable (varname, default_config)
219 elif (answer in "lL"):
221 print "No changes to display"
223 for varname in changes:
224 show_variable(varname, changes)
226 print ("Unknown command >%s< -- use h for help" % answer)
229 result.update(default_config)
230 result.update(changes)
233 def setup_server_key(config_dict):
234 hrn = config_dict.get('GENI_INTERFACE_HRN')
237 # Get the path to the authorities directory hierarchy
238 hierarchy = Hierarchy()
239 path = hierarchy.basedir
240 auth_path = hrn.replace(".", os.sep)
242 # define some useful variables
245 hrn_leaf = get_leaf(hrn)
248 new_server_key = os.sep.join([path, auth_path, hrn_leaf]) + ".pkey"
249 old_server_key = os.sep.join([path, key])
250 old_server_cert = os.sep.join([path, cert])
252 # remove old key/cert
253 for fd in [old_server_key, old_server_cert]:
254 if os.path.isfile(fd):
257 # create new server.key
259 distutils.file_util.copy_file(src=new_server_key, dst=old_server_key, verbose=1)
260 print "\t\t%(old_server_key)s\ncopied from\t%(new_server_key)s" % locals()
261 # this is expected when running this tool for the first time (before sfa-import-plc.py)
263 print "Could not create %(old_server_key)s - ignore if you haven't run sfa-import-plc.py yet"%locals()
273 parser = OptionParser(usage=command_usage, version="%prog 1.0")
274 parser.set_defaults(config_dir="/etc/sfa",
276 parser.add_option("","--configdir",dest="config_dir",action="append", help="specify configuration directory")
277 parser.add_option("","--usual_variable",dest="usual_variables",action="append", help="add a usual variable")
278 parser.add_option("-d", "--default", action="count", help="dont prompt for values, just use defaults")
279 (config,args) = parser.parse_args()
281 parser.error("too many arguments")
283 config_dir = parser.values.config_dir
284 config_file = os.sep.join([config_dir, 'sfa_config'])
285 defaults = get_defaults()
286 # if -d is specified dont prompt, just configure with defaults
288 save_config(defaults, config_file)
291 results = mainloop (defaults, config_file)
292 setup_server_key(results)
295 if __name__ == '__main__':