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
18 import distutils.file_util
19 from optparse import OptionParser
21 from sfa.util.config import Config
22 from sfa.trust.hierarchy import *
23 from sfa.util.misc import *
26 all_variables = ["SFA_REGISTRY_ROOT_AUTH",
27 "SFA_REGISTRY_LEVEL1_AUTH",
28 "SFA_REGISTRY_ENABLED",
32 "SFA_AGGREGATE_ENABLED",
47 "SFA_PLC_DB_PASSWORD",
49 usual_variables = ["SFA_REGISTRY_ROOT_AUTH",
50 "SFA_REGISTRY_LEVEL1_AUTH",
58 "SFA_PLC_DB_PASSWORD",
63 mainloop_usage= """Available commands:
64 u/U\t\t\tEdit usual variables
65 w/W\t\t\tWrite / Write & reload
66 q\t\t\tQuit (without saving)
69 l/L [<var>]\tShow Locally modified variables/values
70 s/S [<var>]\tShow all current variables/values
71 e/E [<var>]\tEdit variables (all, in category, single)
75 command_usage="%prog [options]"
77 Unless you specify the -d option, meaning you want to configure
78 using defaults without interactive prompts"""
80 variable_usage= """Edit Commands :
81 .\tStops prompting, return to mainloop
82 =\tShows default value
86 def save_config(changes, config_file):
87 # always validate before saving
88 changes = validate(changes)
90 cfile = open(config_file, 'r')
91 lines = cfile.readlines()
96 for variable in changes:
97 if line.startswith(variable+'='):
99 value = int(changes[variable])
100 newline = '%s=%s\n' % (variable, value)
101 newlines.append(newline)
103 value = changes[variable]
104 newline = '%s="%s"\n' % (variable, value)
105 newlines.append(newline)
109 newlines.append(line)
111 cfile = open(config_file, 'w')
112 cfile.writelines(newlines)
114 print 'updated config file',config_file
116 def validate(changes):
121 defaults = get_defaults()
123 # SFA_INTERFACE_HRN is SFA_REGISTRY_LEVEL1_AUTH, if thats blank it
124 # then defaults to SFA_REGISTRY_ROOT_AUTH
125 # SFA_REGISTRY_LEVEL1_AUTH, so if either of these are present we must
126 # update SFA_INTERFACE_HRN
127 if 'SFA_REGISTRY_ROOT_AUTH' in changes:
128 root_auth = changes['SFA_REGISTRY_ROOT_AUTH']
130 root_auth = defaults['SFA_REGISTRY_ROOT_AUTH']
132 if 'SFA_REGISTRY_LEVEL1_AUTH' in changes:
133 level1_auth = changes['SFA_REGISTRY_LEVEL1_AUTH']
135 level1_auth = defaults['SFA_REGISTRY_LEVEL1_AUTH']
138 interface_hrn = level1_auth
140 interface_hrn = root_auth
141 changes['SFA_INTERFACE_HRN'] = interface_hrn
145 sfa_config = Config()
148 for var in dir(sfa_config):
149 if var.startswith('SFA'):
150 value = eval("sfa_config.%s" % var)
151 defaults[var] = value
155 def prompt_variable(variable, default_config):
156 if variable in default_config:
157 default_value = default_config[variable]
162 prompt = "%(variable)s : [%(default_value)s] " % locals()
164 answer = raw_input(prompt).strip()
166 raise Exception ('BailOut')
167 except KeyboardInterrupt:
169 raise Exception ('BailOut')
171 if (answer == "") or (answer == default_value):
173 elif answer in ['""', "''"]:
175 elif (answer == "."):
176 raise Exception ('BailOut')
177 elif (answer == "?"):
178 print variable_usage.strip()
179 elif (answer == "="):
180 print ("%s defaults to %s" %(variable,default_value))
184 def show_variable(variable, value_dict):
185 print "%s=%s" % (variable, value_dict[variable])
187 def mainloop (default_config, config_file):
191 answer = raw_input("Enter command (u for usual changes, w to save, ? for help) ").strip()
194 except KeyboardInterrupt:
197 if (answer == "") or (answer in "?hH"):
203 if (answer in ["q","Q"]):
205 elif (answer == "w"):
206 save_config(changes, config_file)
207 elif (answer == "u"):
209 for varname in usual_variables:
210 changes[varname] = prompt_variable(varname, default_config)
211 except Exception, inst:
212 if (str(inst) != 'BailOut'):
214 elif (answer in ["e","E"]):
216 for varname in all_variables:
217 changes[varname] = prompt_variable(varname, default_config)
218 except Exception, inst:
219 if (str(inst) != 'BailOut'):
221 elif (answer in "sS"):
222 for varname in usual_variables:
223 show_variable (varname, default_config)
224 elif (answer in "lL"):
226 print "No changes to display"
228 for varname in changes:
229 show_variable(varname, changes)
231 print ("Unknown command >%s< -- use h for help" % answer)
234 result.update(default_config)
235 result.update(changes)
238 def setup_server_key(config_dict):
239 hrn = config_dict.get('SFA_INTERFACE_HRN')
242 # Get the path to the authorities directory hierarchy
243 hierarchy = Hierarchy()
244 path = hierarchy.basedir
245 auth_path = hrn.replace(".", os.sep)
247 # define some useful variables
250 hrn_leaf = get_leaf(hrn)
253 new_server_key = os.sep.join([path, auth_path, hrn_leaf]) + ".pkey"
254 old_server_key = os.sep.join([path, key])
255 old_server_cert = os.sep.join([path, cert])
257 # remove old key/cert
258 for fd in [old_server_key, old_server_cert]:
259 if os.path.isfile(fd):
262 # create new server.key
264 distutils.file_util.copy_file(src=new_server_key, dst=old_server_key, verbose=1)
265 print "\t\t%(old_server_key)s\ncopied from\t%(new_server_key)s" % locals()
266 # this is expected when running this tool for the first time (before sfa-import-plc.py)
268 print "Could not create %(old_server_key)s - ignore if you haven't run sfa-import-plc.py yet"%locals()
278 parser = OptionParser(usage=command_usage, version="%prog 1.0")
279 parser.set_defaults(config_dir="/etc/sfa",
281 parser.add_option("","--configdir",dest="config_dir",action="append", help="specify configuration directory")
282 parser.add_option("","--usual_variable",dest="usual_variables",action="append", help="add a usual variable")
283 parser.add_option("-d", "--default", action="count", help="dont prompt for values, just use defaults")
284 (config,args) = parser.parse_args()
286 parser.error("too many arguments")
288 config_dir = parser.values.config_dir
289 config_file = os.sep.join([config_dir, 'sfa_config'])
290 defaults = get_defaults()
291 # if -d is specified dont prompt, just configure with defaults
293 save_config(defaults, config_file)
296 results = mainloop (defaults, config_file)
297 setup_server_key(results)
300 if __name__ == '__main__':