740 lines
21 KiB
Python
Executable File
740 lines
21 KiB
Python
Executable File
#!/usr/bin/python
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# Author: Joshua Brindle <jbrindle@tresys.com>
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#
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# Copyright (C) 2005 - 2006 Tresys Technology, LLC
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, version 2.
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"""
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This module generates configuration files and documentation from the
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SELinux reference policy XML format.
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"""
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import sys
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import getopt
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import pyplate
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import os
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import string
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from xml.dom.minidom import parse, parseString
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#modules enabled and disabled values
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MOD_BASE = "base"
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MOD_ENABLED = "module"
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MOD_DISABLED = "off"
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#booleans enabled and disabled values
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BOOL_ENABLED = "true"
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BOOL_DISABLED = "false"
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#tunables enabled and disabled values
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TUN_ENABLED = "true"
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TUN_DISABLED = "false"
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def read_policy_xml(filename):
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"""
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Takes in XML from a file and returns a parsed file.
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"""
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try:
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xml_fh = open(filename)
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except:
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error("error opening " + filename)
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try:
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doc = parseString(xml_fh.read())
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except:
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xml_fh.close()
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error("Error while parsing xml")
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xml_fh.close()
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return doc
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def gen_booleans_conf(doc, file_name, namevalue_list):
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"""
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Generates the booleans configuration file using the XML provided and the
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previous booleans configuration.
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"""
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for node in doc.getElementsByTagName("bool"):
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for desc in node.getElementsByTagName("desc"):
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bool_desc = format_txt_desc(desc)
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s = string.split(bool_desc, "\n")
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file_name.write("#\n")
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for line in s:
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file_name.write("# %s\n" % line)
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bool_name = bool_val = None
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for (name, value) in node.attributes.items():
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if name == "name":
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bool_name = value
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elif name == "dftval":
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bool_val = value
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if [bool_name,BOOL_ENABLED] in namevalue_list:
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bool_val = BOOL_ENABLED
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elif [bool_name,BOOL_DISABLED] in namevalue_list:
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bool_val = BOOL_DISABLED
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if bool_name and bool_val:
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file_name.write("%s = %s\n\n" % (bool_name, bool_val))
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bool_name = bool_val = None
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# tunables are currently implemented as booleans
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for node in doc.getElementsByTagName("tunable"):
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for desc in node.getElementsByTagName("desc"):
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bool_desc = format_txt_desc(desc)
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s = string.split(bool_desc, "\n")
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file_name.write("#\n")
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for line in s:
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file_name.write("# %s\n" % line)
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bool_name = bool_val = None
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for (name, value) in node.attributes.items():
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if name == "name":
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bool_name = value
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elif name == "dftval":
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bool_val = value
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if [bool_name,BOOL_ENABLED] in namevalue_list:
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bool_val = BOOL_ENABLED
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elif [bool_name,BOOL_DISABLED] in namevalue_list:
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bool_val = BOOL_DISABLED
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if bool_name and bool_val:
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file_name.write("%s = %s\n\n" % (bool_name, bool_val))
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bool_name = bool_val = None
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def gen_module_conf(doc, file_name, namevalue_list):
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"""
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Generates the module configuration file using the XML provided and the
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previous module configuration.
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"""
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# If file exists, preserve settings and modify if needed.
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# Otherwise, create it.
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file_name.write("#\n# This file contains a listing of available modules.\n")
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file_name.write("# To prevent a module from being used in policy\n")
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file_name.write("# creation, set the module name to \"%s\".\n#\n" % MOD_DISABLED)
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file_name.write("# For monolithic policies, modules set to \"%s\" and \"%s\"\n" % (MOD_BASE, MOD_ENABLED))
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file_name.write("# will be built into the policy.\n#\n")
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file_name.write("# For modular policies, modules set to \"%s\" will be\n" % MOD_BASE)
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file_name.write("# included in the base module. \"%s\" will be compiled\n" % MOD_ENABLED)
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file_name.write("# as individual loadable modules.\n#\n\n")
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# For required in [True,False] is present so that the requiered modules
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# are at the top of the config file.
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for required in [True,False]:
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for node in doc.getElementsByTagName("module"):
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mod_req = False
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for req in node.getElementsByTagName("required"):
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if req.getAttribute("val") == "true":
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mod_req = True
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# Skip if we arnt working on the right set of modules.
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if mod_req and not required or not mod_req and required:
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continue
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mod_name = mod_layer = None
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mod_name = node.getAttribute("name")
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mod_layer = node.parentNode.getAttribute("name")
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if mod_name and mod_layer:
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file_name.write("# Layer: %s\n# Module: %s\n" % (mod_layer,mod_name))
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if required:
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file_name.write("# Required in base\n")
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file_name.write("#\n")
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for desc in node.getElementsByTagName("summary"):
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if not desc.parentNode == node:
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continue
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s = string.split(format_txt_desc(desc), "\n")
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for line in s:
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file_name.write("# %s\n" % line)
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# If the module is set as disabled.
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if [mod_name, MOD_DISABLED] in namevalue_list:
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file_name.write("%s = %s\n\n" % (mod_name, MOD_DISABLED))
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# If the module is set as enabled.
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elif [mod_name, MOD_ENABLED] in namevalue_list:
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file_name.write("%s = %s\n\n" % (mod_name, MOD_ENABLED))
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# If the module is set as base.
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elif [mod_name, MOD_BASE] in namevalue_list:
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file_name.write("%s = %s\n\n" % (mod_name, MOD_BASE))
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# If the module is a new module.
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else:
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# Set the module to base if it is marked as required.
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if mod_req:
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file_name.write("%s = %s\n\n" % (mod_name, MOD_BASE))
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# Set the module to enabled if it is not required.
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else:
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file_name.write("%s = %s\n\n" % (mod_name, MOD_ENABLED))
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def get_conf(conf):
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"""
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Returns a list of [name, value] pairs from a config file with the format
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name = value
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"""
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conf_lines = conf.readlines()
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namevalue_list = []
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for i in range(0,len(conf_lines)):
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line = conf_lines[i]
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if line.strip() != '' and line.strip()[0] != "#":
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namevalue = line.strip().split("=")
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if len(namevalue) != 2:
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warning("line %d: \"%s\" is not a valid line, skipping"\
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% (i, line.strip()))
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continue
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namevalue[0] = namevalue[0].strip()
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if len(namevalue[0].split()) > 1:
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warning("line %d: \"%s\" is not a valid line, skipping"\
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% (i, line.strip()))
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continue
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namevalue[1] = namevalue[1].strip()
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if len(namevalue[1].split()) > 1:
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warning("line %d: \"%s\" is not a valid line, skipping"\
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% (i, line.strip()))
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continue
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namevalue_list.append(namevalue)
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return namevalue_list
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def first_cmp(a, b):
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"""
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Compares the two first elements of a list instead of the entire list.
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"""
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return cmp(a[0], b[0])
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def int_cmp(a, b):
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"""
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Compares two interfaces.
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"""
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return cmp(a["interface_name"], b["interface_name"])
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def temp_cmp(a, b):
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"""
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Compares two templates.
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"""
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return cmp(a["template_name"], b["template_name"])
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def tun_cmp(a, b):
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"""
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Compares two tunables.
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"""
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return cmp(a["tun_name"], b["tun_name"])
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def bool_cmp(a, b):
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"""
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Compares two booleans.
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"""
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return cmp(a["bool_name"], b["bool_name"])
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def gen_doc_menu(mod_layer, module_list):
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"""
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Generates the HTML document menu.
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"""
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menu = []
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for layer, value in module_list.iteritems():
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cur_menu = (layer, [])
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menu.append(cur_menu)
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if layer != mod_layer and mod_layer != None:
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continue
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#we are in our layer so fill in the other modules or we want them all
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for mod, desc in value.iteritems():
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cur_menu[1].append((mod, desc))
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menu.sort(first_cmp)
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for x in menu:
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x[1].sort(first_cmp)
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return menu
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def format_html_desc(node):
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"""
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Formats a XML node into a HTML format.
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"""
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desc_buf = ''
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for desc in node.childNodes:
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if desc.nodeName == "#text":
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if desc.data is not '':
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if desc.parentNode.nodeName != "p":
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desc_buf += "<p>" + desc.data + "</p>"
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else:
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desc_buf += desc.data
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else:
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desc_buf += "<" + desc.nodeName + ">" \
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+ format_html_desc(desc) \
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+ "</" + desc.nodeName +">"
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return desc_buf
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def format_txt_desc(node):
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"""
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Formats a XML node into a plain text format.
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"""
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desc_buf = ''
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for desc in node.childNodes:
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if desc.nodeName == "#text":
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desc_buf += desc.data + "\n"
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elif desc.nodeName == "p":
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desc_buf += desc.firstChild.data + "\n"
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for chld in desc.childNodes:
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if chld.nodeName == "ul":
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desc_buf += "\n"
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for li in chld.getElementsByTagName("li"):
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desc_buf += "\t -" + li.firstChild.data + "\n"
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return desc_buf.strip() + "\n"
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def gen_docs(doc, working_dir, templatedir):
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"""
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Generates all the documentation.
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"""
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try:
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#get the template data ahead of time so we don't reopen them over and over
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bodyfile = open(templatedir + "/header.html", "r")
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bodydata = bodyfile.read()
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bodyfile.close()
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intfile = open(templatedir + "/interface.html", "r")
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intdata = intfile.read()
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intfile.close()
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templatefile = open(templatedir + "/template.html", "r")
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templatedata = templatefile.read()
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templatefile.close()
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menufile = open(templatedir + "/menu.html", "r")
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menudata = menufile.read()
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menufile.close()
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indexfile = open(templatedir + "/module_list.html","r")
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indexdata = indexfile.read()
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indexfile.close()
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modulefile = open(templatedir + "/module.html","r")
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moduledata = modulefile.read()
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modulefile.close()
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intlistfile = open(templatedir + "/int_list.html", "r")
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intlistdata = intlistfile.read()
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intlistfile.close()
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templistfile = open(templatedir + "/temp_list.html", "r")
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templistdata = templistfile.read()
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templistfile.close()
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boollistfile = open(templatedir + "/global_bool_list.html", "r")
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boollistdata = boollistfile.read()
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boollistfile.close()
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tunlistfile = open(templatedir + "/global_tun_list.html", "r")
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tunlistdata = tunlistfile.read()
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tunlistfile.close()
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except:
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error("Could not open templates")
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try:
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os.chdir(working_dir)
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except:
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error("Could not chdir to target directory")
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#arg, i have to go through this dom tree ahead of time to build up the menus
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module_list = {}
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for node in doc.getElementsByTagName("module"):
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mod_name = mod_layer = interface_buf = ''
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mod_name = node.getAttribute("name")
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mod_layer = node.parentNode.getAttribute("name")
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for desc in node.getElementsByTagName("summary"):
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if desc.parentNode == node and desc:
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mod_summary = format_html_desc(desc)
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if not module_list.has_key(mod_layer):
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module_list[mod_layer] = {}
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module_list[mod_layer][mod_name] = mod_summary
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#generate index pages
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main_content_buf = ''
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for mod_layer,modules in module_list.iteritems():
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menu = gen_doc_menu(mod_layer, module_list)
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layer_summary = None
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for desc in doc.getElementsByTagName("summary"):
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if desc.parentNode.getAttribute("name") == mod_layer:
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layer_summary = format_html_desc(desc)
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menu_args = { "menulist" : menu,
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"mod_layer" : mod_layer,
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"layer_summary" : layer_summary }
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menu_tpl = pyplate.Template(menudata)
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menu_buf = menu_tpl.execute_string(menu_args)
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content_tpl = pyplate.Template(indexdata)
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content_buf = content_tpl.execute_string(menu_args)
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main_content_buf += content_buf
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body_args = { "menu" : menu_buf,
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"content" : content_buf }
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index_file = mod_layer + ".html"
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index_fh = open(index_file, "w")
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body_tpl = pyplate.Template(bodydata)
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body_tpl.execute(index_fh, body_args)
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index_fh.close()
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menu = gen_doc_menu(None, module_list)
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menu_args = { "menulist" : menu,
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"mod_layer" : None }
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menu_tpl = pyplate.Template(menudata)
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menu_buf = menu_tpl.execute_string(menu_args)
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body_args = { "menu" : menu_buf,
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"content" : main_content_buf }
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index_file = "index.html"
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index_fh = open(index_file, "w")
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body_tpl = pyplate.Template(bodydata)
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body_tpl.execute(index_fh, body_args)
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index_fh.close()
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#now generate the individual module pages
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all_interfaces = []
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all_templates = []
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for node in doc.getElementsByTagName("module"):
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mod_name = mod_layer = mod_desc = interface_buf = ''
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mod_name = node.getAttribute("name")
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mod_layer = node.parentNode.getAttribute("name")
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mod_req = None
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for req in node.getElementsByTagName("required"):
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if req.getAttribute("val") == "true":
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mod_req = True
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for desc in node.getElementsByTagName("summary"):
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if desc.parentNode == node:
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mod_summary = format_html_desc(desc)
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for desc in node.getElementsByTagName("desc"):
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if desc.parentNode == node:
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mod_desc = format_html_desc(desc)
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interfaces = []
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for interface in node.getElementsByTagName("interface"):
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interface_parameters = []
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interface_desc = interface_summary = None
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interface_name = interface.getAttribute("name")
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interface_line = interface.getAttribute("lineno")
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for desc in interface.childNodes:
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if desc.nodeName == "desc":
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interface_desc = format_html_desc(desc)
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elif desc.nodeName == "summary":
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interface_summary = format_html_desc(desc)
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for args in interface.getElementsByTagName("param"):
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for desc in args.getElementsByTagName("summary"):
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paramdesc = format_html_desc(desc)
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paramname = args.getAttribute("name")
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if args.getAttribute("optional") == "true":
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paramopt = "Yes"
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else:
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paramopt = "No"
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parameter = { "name" : paramname,
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"desc" : paramdesc,
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"optional" : paramopt }
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interface_parameters.append(parameter)
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interfaces.append( { "interface_name" : interface_name,
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"interface_summary" : interface_summary,
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"interface_desc" : interface_desc,
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"interface_parameters" : interface_parameters })
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#all_interfaces is for the main interface index with all interfaces
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all_interfaces.append( { "interface_name" : interface_name,
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"interface_summary" : interface_summary,
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"interface_desc" : interface_desc,
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"interface_parameters" : interface_parameters,
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"mod_name": mod_name,
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"mod_layer" : mod_layer })
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interfaces.sort(int_cmp)
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interface_tpl = pyplate.Template(intdata)
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interface_buf = interface_tpl.execute_string({"interfaces" : interfaces})
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# now generate individual template pages
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templates = []
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for template in node.getElementsByTagName("template"):
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template_parameters = []
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template_desc = template_summary = None
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template_name = template.getAttribute("name")
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template_line = template.getAttribute("lineno")
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for desc in template.childNodes:
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if desc.nodeName == "desc":
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template_desc = format_html_desc(desc)
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elif desc.nodeName == "summary":
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template_summary = format_html_desc(desc)
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for args in template.getElementsByTagName("param"):
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for desc in args.getElementsByTagName("summary"):
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paramdesc = format_html_desc(desc)
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paramname = args.getAttribute("name")
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if args.getAttribute("optional") == "true":
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paramopt = "Yes"
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else:
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paramopt = "No"
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parameter = { "name" : paramname,
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"desc" : paramdesc,
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"optional" : paramopt }
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template_parameters.append(parameter)
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templates.append( { "template_name" : template_name,
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"template_summary" : template_summary,
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"template_desc" : template_desc,
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"template_parameters" : template_parameters })
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#all_templates is for the main interface index with all templates
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all_templates.append( { "template_name" : template_name,
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"template_summary" : template_summary,
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"template_desc" : template_desc,
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"template_parameters" : template_parameters,
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"mod_name": mod_name,
|
|
"mod_layer" : mod_layer })
|
|
|
|
templates.sort(temp_cmp)
|
|
template_tpl = pyplate.Template(templatedata)
|
|
template_buf = template_tpl.execute_string({"templates" : templates})
|
|
|
|
|
|
menu = gen_doc_menu(mod_layer, module_list)
|
|
|
|
menu_tpl = pyplate.Template(menudata)
|
|
menu_buf = menu_tpl.execute_string({ "menulist" : menu })
|
|
|
|
|
|
# pyplate's execute_string gives us a line of whitespace in
|
|
# template_buf or interface_buf if there are no interfaces or
|
|
# templates for this module. This is problematic because the
|
|
# HTML templates use a conditional if on interface_buf or
|
|
# template_buf being 'None' to decide if the "Template:" or
|
|
# "Interface:" headers need to be printed in the module pages.
|
|
# This detects if either of these are just whitespace, and sets
|
|
# their values to 'None' so that when applying it to the
|
|
# templates, they are properly recognized as not existing.
|
|
if not interface_buf.strip():
|
|
interface_buf = None
|
|
if not template_buf.strip():
|
|
template_buf = None
|
|
|
|
module_args = { "mod_layer" : mod_layer,
|
|
"mod_name" : mod_name,
|
|
"mod_summary" : mod_summary,
|
|
"mod_desc" : mod_desc,
|
|
"mod_req" : mod_req,
|
|
"interfaces" : interface_buf,
|
|
"templates": template_buf }
|
|
|
|
module_tpl = pyplate.Template(moduledata)
|
|
module_buf = module_tpl.execute_string(module_args)
|
|
|
|
body_args = { "menu" : menu_buf,
|
|
"content" : module_buf }
|
|
|
|
module_file = mod_layer + "_" + mod_name + ".html"
|
|
module_fh = open(module_file, "w")
|
|
body_tpl = pyplate.Template(bodydata)
|
|
body_tpl.execute(module_fh, body_args)
|
|
module_fh.close()
|
|
|
|
|
|
menu = gen_doc_menu(None, module_list)
|
|
menu_args = { "menulist" : menu,
|
|
"mod_layer" : None }
|
|
menu_tpl = pyplate.Template(menudata)
|
|
menu_buf = menu_tpl.execute_string(menu_args)
|
|
|
|
#build the interface index
|
|
all_interfaces.sort(int_cmp)
|
|
interface_tpl = pyplate.Template(intlistdata)
|
|
interface_buf = interface_tpl.execute_string({"interfaces" : all_interfaces})
|
|
int_file = "interfaces.html"
|
|
int_fh = open(int_file, "w")
|
|
body_tpl = pyplate.Template(bodydata)
|
|
|
|
body_args = { "menu" : menu_buf,
|
|
"content" : interface_buf }
|
|
|
|
body_tpl.execute(int_fh, body_args)
|
|
int_fh.close()
|
|
|
|
|
|
#build the template index
|
|
all_templates.sort(temp_cmp)
|
|
template_tpl = pyplate.Template(templistdata)
|
|
template_buf = template_tpl.execute_string({"templates" : all_templates})
|
|
temp_file = "templates.html"
|
|
temp_fh = open(temp_file, "w")
|
|
body_tpl = pyplate.Template(bodydata)
|
|
|
|
body_args = { "menu" : menu_buf,
|
|
"content" : template_buf }
|
|
|
|
body_tpl.execute(temp_fh, body_args)
|
|
temp_fh.close()
|
|
|
|
|
|
#build the global tunable index
|
|
global_tun_buf = []
|
|
for tunable in doc.getElementsByTagName("tunable"):
|
|
if tunable.parentNode.nodeName == "policy":
|
|
tunable_name = tunable.getAttribute("name")
|
|
default_value = tunable.getAttribute("dftval")
|
|
for desc in tunable.getElementsByTagName("desc"):
|
|
description = format_html_desc(desc)
|
|
global_tun_buf.append( { "tun_name" : tunable_name,
|
|
"def_val" : default_value,
|
|
"desc" : description } )
|
|
global_tun_buf.sort(tun_cmp)
|
|
global_tun_tpl = pyplate.Template(tunlistdata)
|
|
global_tun_buf = global_tun_tpl.execute_string({"tunables" : global_tun_buf})
|
|
global_tun_file = "global_tunables.html"
|
|
global_tun_fh = open(global_tun_file, "w")
|
|
body_tpl = pyplate.Template(bodydata)
|
|
|
|
body_args = { "menu" : menu_buf,
|
|
"content" : global_tun_buf }
|
|
|
|
body_tpl.execute(global_tun_fh, body_args)
|
|
global_tun_fh.close()
|
|
|
|
|
|
#build the global boolean index
|
|
global_bool_buf = []
|
|
for boolean in doc.getElementsByTagName("bool"):
|
|
if boolean.parentNode.nodeName == "policy":
|
|
bool_name = boolean.getAttribute("name")
|
|
default_value = boolean.getAttribute("dftval")
|
|
for desc in boolean.getElementsByTagName("desc"):
|
|
description = format_html_desc(desc)
|
|
global_bool_buf.append( { "bool_name" : bool_name,
|
|
"def_val" : default_value,
|
|
"desc" : description } )
|
|
global_bool_buf.sort(bool_cmp)
|
|
global_bool_tpl = pyplate.Template(boollistdata)
|
|
global_bool_buf = global_bool_tpl.execute_string({"booleans" : global_bool_buf})
|
|
global_bool_file = "global_booleans.html"
|
|
global_bool_fh = open(global_bool_file, "w")
|
|
body_tpl = pyplate.Template(bodydata)
|
|
|
|
body_args = { "menu" : menu_buf,
|
|
"content" : global_bool_buf }
|
|
|
|
body_tpl.execute(global_bool_fh, body_args)
|
|
global_bool_fh.close()
|
|
|
|
|
|
|
|
def error(error):
|
|
"""
|
|
Print an error message and exit.
|
|
"""
|
|
|
|
sys.stderr.write("%s exiting for: " % sys.argv[0])
|
|
sys.stderr.write("%s\n" % error)
|
|
sys.stderr.flush()
|
|
sys.exit(1)
|
|
|
|
def warning(warn):
|
|
"""
|
|
Print a warning message.
|
|
"""
|
|
|
|
sys.stderr.write("%s warning: " % sys.argv[0])
|
|
sys.stderr.write("%s\n" % warn)
|
|
|
|
def usage():
|
|
"""
|
|
Describes the proper usage of this tool.
|
|
"""
|
|
|
|
sys.stdout.write("%s [-tmdT] -x <xmlfile>\n\n" % sys.argv[0])
|
|
sys.stdout.write("Options:\n")
|
|
sys.stdout.write("-b --booleans <file> -- write boolean config to <file>\n")
|
|
sys.stdout.write("-m --modules <file> -- write module config to <file>\n")
|
|
sys.stdout.write("-d --docs <dir> -- write interface documentation to <dir>\n")
|
|
sys.stdout.write("-x --xml <file> -- filename to read xml data from\n")
|
|
sys.stdout.write("-T --templates <dir> -- template directory for documents\n")
|
|
|
|
|
|
# MAIN PROGRAM
|
|
try:
|
|
opts, args = getopt.getopt(sys.argv[1:], "b:m:d:x:T:", ["booleans","modules","docs","xml", "templates"])
|
|
except getopt.GetoptError:
|
|
usage()
|
|
sys.exit(1)
|
|
|
|
booleans = modules = docsdir = None
|
|
templatedir = "templates/"
|
|
xmlfile = "policy.xml"
|
|
|
|
for opt, val in opts:
|
|
if opt in ("-b", "--booleans"):
|
|
booleans = val
|
|
if opt in ("-m", "--modules"):
|
|
modules = val
|
|
if opt in ("-d", "--docs"):
|
|
docsdir = val
|
|
if opt in ("-x", "--xml"):
|
|
xmlfile = val
|
|
if opt in ("-T", "--templates"):
|
|
templatedir = val
|
|
|
|
doc = read_policy_xml(xmlfile)
|
|
|
|
if booleans:
|
|
namevalue_list = []
|
|
if os.path.exists(booleans):
|
|
try:
|
|
conf = open(booleans, 'r')
|
|
except:
|
|
error("Could not open booleans file for reading")
|
|
|
|
namevalue_list = get_conf(conf)
|
|
|
|
conf.close()
|
|
|
|
try:
|
|
conf = open(booleans, 'w')
|
|
except:
|
|
error("Could not open booleans file for writing")
|
|
|
|
gen_booleans_conf(doc, conf, namevalue_list)
|
|
conf.close()
|
|
|
|
|
|
if modules:
|
|
namevalue_list = []
|
|
if os.path.exists(modules):
|
|
try:
|
|
conf = open(modules, 'r')
|
|
except:
|
|
error("Could not open modules file for reading")
|
|
namevalue_list = get_conf(conf)
|
|
conf.close()
|
|
|
|
try:
|
|
conf = open(modules, 'w')
|
|
except:
|
|
error("Could not open modules file for writing")
|
|
gen_module_conf(doc, conf, namevalue_list)
|
|
conf.close()
|
|
|
|
if docsdir:
|
|
gen_docs(doc, docsdir, templatedir)
|