#!/usr/bin/env python
# -*- coding: utf-8 -*-

# ***********************IMPORTANT NMAP LICENSE TERMS************************
# *                                                                         *
# * The Nmap Security Scanner is (C) 1996-2009 Insecure.Com LLC. Nmap is    *
# * also a registered trademark of Insecure.Com LLC.  This program is free  *
# * software; you may redistribute and/or modify it under the terms of the  *
# * GNU General Public License as published by the Free Software            *
# * Foundation; Version 2 with the clarifications and exceptions described  *
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# * this software under certain conditions.  If you wish to embed Nmap      *
# * technology into proprietary software, we sell alternative licenses      *
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# * o Integrates source code from Nmap                                      *
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# *   not derivative works.)                                                * 
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# *                                                                         *
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# * This also allows you to audit the software for security holes (none     *
# * have been found so far).                                                *
# *                                                                         *
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# * included with Nmap.                                                     *
# *                                                                         *
# ***************************************************************************/

from os.path import exists
from ConfigParser import ConfigParser, DEFAULTSECT, NoOptionError, NoSectionError
from zenmapCore.UmitLogging import log

class UmitConfigParser(ConfigParser):
    filenames = None
    fp = None
    
    def __init__(self, *args):
        ConfigParser.__init__(self, *args)

    def set(self, section, option, value):
        if not self.has_section(section):
            self.add_section(section)
        
        ConfigParser.set(self, section, option, value)
        self.save_changes()

    def read(self, filename):
        log.debug(">>> Trying to parse: %s" % filename)

        self.filename = ConfigParser.read(self, filename)
        return self.filename

    def readfp(self, fp, filename=None):
        ConfigParser.readfp(self, fp, filename)
        self.fp = fp
        self.filenames = filename

    def save_changes(self):
        if self.filenames:
            filename = None
            if isinstance(self.filenames, basestring):
                filename = self.filenames
            elif isinstance(self.filenames, list):
                if len(self.filenames) == 1:
                    filename = self.filenames[0]
                else:
                    raise ValueError("UmitConfigParser can't handle a list of filenames: %s" % self.filenames)
            else:
                raise ValueError("UmitConfigParser can't handle a filename of type %s: %s" % (type(self.filenames), self.filenames))
            self.write(open(filename, 'w'))
        elif self.fp:
            self.write(self.fp)

    def write(self, fp):
        '''Write alphabetically sorted config files'''
        if self._defaults:
            fp.write("[%s]\n" % DEFAULTSECT)
            
            items = self._defaults.items()
            items.sort()
            
            for (key, value) in items:
                fp.write("%s = %s\n" % (key, str(value).replace('\n', '\n\t')))
            fp.write("\n")

        sects = self._sections.keys()
        sects.sort()
        
        for section in sects:
            fp.write("[%s]\n" % section)
            for (key, value) in self._sections[section].items():
                if key != "__name__":
                    fp.write("%s = %s\n" %
                             (key, str(value).replace('\n', '\n\t')))
            fp.write("\n")

def test_umit_conf_content(filename):
    parser = ConfigParser()
    parser.read(filename)

    # Paths section
    section = "paths"
    assert get_or_false(parser, section, "nmap_command_path")


def get_or_false(parser, section, option):
    try:
        result = parser.get(section, option)
        return result
    except NoOptionError:
        return False
    except NoSectionError:
        return False
