sshyp/bin/sshyp

#!/bin/python3

# external modules

from os import environ, listdir, path, remove, system, uname, walk
from pathlib import Path
import random
from shutil import copy, get_terminal_size, move, rmtree
import sshync
import string
from sys import argv, exit as s_exit
from textwrap import fill


# utility functions

def entry_list_gen():  # generates and prints a list of all folders and entries
    print('\n\u001b[38;5;0;48;5;15msshyp entries:\u001b[0m\n')
    _entry_list, _color_alternator = [], 1
    for _entry in sorted(listdir(path.expanduser('~/.password-pasture'))):
        if Path(path.expanduser(f"~/.password-pasture/{_entry}")).is_file():
            if _color_alternator == 1:
                _entry_list.append(f"\u001b[38;5;255m{_entry.replace('.gpg', '')}\u001b[0m")
                _color_alternator = 2
            else:
                _entry_list.append(f"\u001b[38;5;248m{_entry.replace('.gpg', '')}\u001b[0m")
                _color_alternator = 1
    _real = len(' '.join(_entry_list)) - (15 * len(_entry_list))
    if _real <= get_terminal_size()[0]:
        _width = len(' '.join(_entry_list))
    else:
        _width = (len(' '.join(_entry_list)) / (_real / get_terminal_size()[0]) - 50)
    try:
        print(fill(' '.join(_entry_list), width=_width) + '\n')
    except ValueError:
        pass
    for _root, _directories, _files in walk(path.expanduser('~/.password-pasture')):
        for _dir in sorted(_directories):
            _inner_dir = f"{_root.replace(path.expanduser('~/.password-pasture'), '')}/{_dir}"
            print(f"\n\u001b[38;5;15;48;5;238m{_inner_dir}/\u001b[0m")
            _entry_list, _color_alternator = [], 1
            for _s_root, _s_directories, _s_files in walk(path.expanduser(f"~/.password-pasture{_inner_dir}")):
                for _entry in sorted(_s_files):
                    if _color_alternator == 1:
                        _entry_list.append(f"\u001b[38;5;255m{_entry.replace('.gpg', '')}\u001b[0m")
                        _color_alternator = 2
                    else:
                        _entry_list.append(f"\u001b[38;5;248m{_entry.replace('.gpg', '')}\u001b[0m")
                        _color_alternator = 1
            _real = len(' '.join(_entry_list)) - (15 * len(_entry_list))
            if _real <= get_terminal_size()[0]:
                _width = len(' '.join(_entry_list))
            else:
                _width = (len(' '.join(_entry_list)) / (_real / get_terminal_size()[0]) - 50)
            try:
                print(fill(' '.join(_entry_list), width=_width) + '\n')
            except ValueError:
                print('\u001b[38;5;208m-empty directory!-\u001b[0m\n')


def replace_line(file_name, line_num, text):  # replaces text in a given line with different text
    _lines = open(file_name, 'r').readlines()
    _lines[line_num] = text
    open(file_name, 'w').writelines(_lines)


def shm_gen():  # generates a random temporary folder for security and returns random names for the folder and temp file
    _shm_folder_gen = ''.join(random.SystemRandom().choice(string.ascii_letters + string.digits)
                              for _ in range(random.randint(10, 30)))
    _shm_entry_gen = ''.join(random.SystemRandom().choice(string.ascii_letters + string.digits)
                             for _ in range(random.randint(10, 30)))
    Path(tmp_dir + _shm_folder_gen).mkdir(0o700)
    return _shm_folder_gen, _shm_entry_gen


def pass_gen():
    def _pass_gen_function(__complexity, __length):
        if __complexity.lower() == 's':
            __character_pool = string.ascii_letters + string.digits
        else:
            __character_pool = string.ascii_letters + string.digits + string.punctuation
        __gen = ''.join(random.SystemRandom().choice(__character_pool) for _ in range(__length))
        __min_special, __special = round(.2 * __length), 0
        for __character in __gen:
            if not __character.isalpha():
                __special += 1
        if __special < __min_special:
            __gen = _pass_gen_function(__complexity, __length)
        return __gen
    _length = int(input('How many characters should be in the password? '))
    if _length > 840:
        _length = 840
        print('\n\u001b[38;5;208mPassword length has been limited to the maximum of 840 characters.\u001b[0m\n')
    _complexity = str(input('Should the password be simple (for compatibility) or complex (for security)? (s/C) '))
    _gen = _pass_gen_function(_complexity, _length)
    return _gen


def encrypt(_shm_folder, _shm_entry, _location):
    system(f"{gpg} -qr {str(gpg_id)} -e '{tmp_dir}{_shm_folder}/{_shm_entry}'")
    move(f"{tmp_dir}{_shm_folder}/{_shm_entry}.gpg", f"{directory}{_location}.gpg")
    rmtree(f"{tmp_dir}{_shm_folder}")


def edit_note(_shm_folder, _shm_entry):
    lines = open(f"{tmp_dir}{_shm_folder}/{_shm_entry}").readlines()
    open(f"{tmp_dir}{_shm_folder}/{_shm_entry}", 'w').writelines(lines[0:3])
    open(f"{tmp_dir}{_shm_folder}/{_shm_entry}-n", 'w').writelines(lines[4:-2])
    system(f"nano {tmp_dir}{_shm_folder}/{_shm_entry}-n")
    edit_notes = open(f"{tmp_dir}{_shm_folder}/{_shm_entry}-n").read()
    open(f"{tmp_dir}{_shm_folder}/{_shm_entry}", 'a').write('\n' + edit_notes + '\n\n')


# argument-specific functions


def tweak():  # runs configuration wizard
    # storage/config directory creation
    Path(path.expanduser('~/.password-pasture')).mkdir(0o700, parents=True, exist_ok=True)
    Path(path.expanduser('~/.config/sshyp/devices')).mkdir(0o700, parents=True, exist_ok=True)
    if not Path(f"{path.expanduser('~/.config/sshyp/tmp')}").exists():
        if Path("/data/data/com.termux").exists():
            system(f"ln -s '/data/data/com.termux/files/usr/tmp' {path.expanduser('~/.config/sshyp/tmp')}")
        else:
            system(f"ln -s /dev/shm {path.expanduser('~/.config/sshyp/tmp')}")
    # device type configuration
    _device_type = input('\nIs this installation for a client or for a server? (C/s) ')
    if _device_type.lower() == 's':
        open(path.expanduser('~/.config/sshyp/sshyp-device'), 'w').write(_device_type)
        Path(path.expanduser('~/.config/sshyp/deleted')).mkdir(0o700, parents=True, exist_ok=True)
        copy('/usr/bin/sshync.py', path.expanduser('~/'))
        copy('/usr/bin/sshypRemote.py', path.expanduser('~/sshypRemote.py'))
        print('\nMake sure the ssh service is running and properly configured.\n\nConfiguration complete!\n')
        s_exit(0)
    else:
        # device type configuration
        _device_type = 'c'  # ensure device type flag is properly set
        open(path.expanduser('~/.config/sshyp/sshyp-device'), 'w').write(_device_type)

        # gpg configuration
        _gpg_id = input('\nsshyp requires the use of a unique gpg key. Do you already have one that you are '
                        'willing to use? (y/N)')
        if _gpg_id.lower() != 'y':
            print('\nA unique gpg key has been generated for you.')
            system(f"{gpg} --full-generate-key")
        _gpg_id = str(input('\nPlease input the ID of your gpg key: '))
        open(path.expanduser('~/.config/sshyp/sshyp-gpg'), 'w').write(_gpg_id + '\n')

        # lock file generation
        open(path.expanduser('~/.config/sshyp/lock'), 'w')
        system(f"{gpg} -qr {str(_gpg_id)} -e {path.expanduser('~/.config/sshyp/lock')}")
        remove(f"{path.expanduser('~/.config/sshyp')}/lock")

        # ssh key configuration
        _ssh_gen = (input('\nMake sure the ssh service on the remote server is running and properly configured.'
                          '\n\nSync support requires a unique ssh key. Would you like to have this automatically '
                          'generated? (Y/n) '))
        if _ssh_gen.lower() != 'n':
            if uname()[0] == 'Haiku':
                Path(f"{path.expanduser('~')}/.ssh").mkdir(0o700, exist_ok=True)
            system('ssh-keygen -t ed25519 -f ~/.ssh/sshyp')
        else:
            print(f"\nEnsure that the key file you are using is located at {path.expanduser('~/.ssh/sshyp')}")

        # ssh ip+port configuration
        print('\nExample input: 10.10.10.10:9999\n')
        _ip_port = str(input('What is the IP and ssh port of the remote server? '))
        _ip, _sep, _port = _ip_port.partition(':')

        # ssh user configuration
        _username_ssh = str(input('\nWhat is the username of the remote server? '))
        print(f"\nEntry directory: /home/{_username_ssh}/.password-pasture/")

        # sshync profile generation
        sshync.make_profile(path.expanduser('~/.config/sshyp/sshyp.sshync'),
                            path.expanduser('~/.password-pasture/'), f"/home/{_username_ssh}/.password-pasture/",
                            path.expanduser('~/.ssh/sshyp'), _ip, _port, _username_ssh)

        # device name configuration
        for _name in listdir(path.expanduser('~/.config/sshyp/devices')):  # remove existing device name
            remove(f"{path.expanduser('~/.config/sshyp/devices/')}{_name}")
        print('\nIMPORTANT: This name MUST be unique amongst your client devices. '
              '\nThis is used to keep track of which devices have up-to-date databases.\n')
        _client_device_name = str(input('What would you like to name this device? '))
        open(f"{path.expanduser('~/.config/sshyp/devices/')}{_client_device_name}", 'w')
        system(f"ssh -i '{path.expanduser('~/.ssh/sshyp')}' -p {_port} {_username_ssh}@{_ip} "
               f"\"touch '/home/{_username_ssh}/.config/sshyp/devices/{_client_device_name}'\"")

        print('\nConfiguration complete!\n')


def print_info():  # prints help text based on argument
    if argument == 'help' or argument == '--help' or argument == '-h':
        print('\n\u001b[38;5;0;48;5;15msshyp  Copyright (C) 2021-2022  Randall Winkhart\u001b[0m\n')
        print("This is free software, and you are welcome to redistribute it under certain conditions;\nthis program "
              "comes with ABSOLUTELY NO WARRANTY;\ntype `sshyp license' for details.")
        print('\n\u001b[38;5;15;48;5;238mUSAGE: sshyp [OPTION [FLAG] [<entry name>]] | [/<entry name>]\u001b[0m\n')
        print('\u001b[38;5;0;48;5;15mOptions:\u001b[0m')
        print('help/--help/-h           bring up this menu')
        print('version/-v               display sshyp version info')
        print('tweak                    configure sshyp')
        print('add                      add an entry')
        print('gen                      generate a new password')
        print('edit                     edit an existing entry')
        print('copy                     copy details of an entry to your clipboard')
        print('shear/-rm                delete an existing entry')
        print('sync/-s                  manually sync the entry directory via sshync\n')
        print('\u001b[38;5;0;48;5;15mFlags:\u001b[0m')
        print('\u001b[38;5;15;48;5;238madd:\u001b[0m')
        print(' password/-p             add a password entry')
        print(' note/-n                 add a note entry')
        print(' folder/-f               add a new folder for entries')
        print('\u001b[38;5;15;48;5;238medit:\u001b[0m')
        print(' rename/relocate/-r      rename or relocate an entry')
        print(' username/-u             change the username of an entry')
        print(' password/-p             change the password of an entry')
        print(' note/-n                 change the note attached to an entry')
        print(' url/-l                  change the url attached to an entry')
        print('\u001b[38;5;15;48;5;238mcopy:\u001b[0m')
        print(' username/-u             copy the username of an entry to your clipboard')
        print(' password/-p             copy the password of an entry to your clipboard')
        print(' url/-l                  copy the URL of an entry to your clipboard')
        print(' note/-n                 copy the note of an entry to your clipboard')
        print('\u001b[38;5;15;48;5;238mgen:\u001b[0m')
        print(' update/-u               generate a password for an existing entry\n')
        print("\u001b[38;5;0;48;5;15mTip:\u001b[0m You can quickly read an entry with 'sshyp /<entry name>'!")
    elif argument == 'version' or argument == '-v':
        print('\n\u001b[38;5;0;48;5;15m////////////////////////////////////////////////////////\u001b[0m')
        print('\u001b[38;5;0;48;5;15m/\u001b[38;5;15;48;5;238m                                                      '
              '\u001b[38;5;0;48;5;15m/\u001b[0m')
        print('\u001b[38;5;0;48;5;15m/\u001b[38;5;15;48;5;238m   \u001b[38;5;0;48;5;15msshyp  Copyright (C) 2021-2022  '
              'Randall Winkhart\u001b[38;5;15;48;5;238m   \u001b[38;5;0;48;5;15m/\u001b[0m')
        print('\u001b[38;5;0;48;5;15m/\u001b[38;5;15;48;5;238m                                                      '
              '\u001b[38;5;0;48;5;15m/\u001b[0m')
        print('\u001b[38;5;0;48;5;15m/\u001b[38;5;15;48;5;238m                    \u001b[38;5;0;48;5;15mVersion 1.0'
              '\u001b[38;5;15;48;5;238m                       \u001b[38;5;0;48;5;15m/\u001b[0m')
        print('\u001b[38;5;0;48;5;15m/\u001b[38;5;15;48;5;238m            \u001b[38;5;0;48;5;15mThe Polished Trotters '
              'Update\u001b[38;5;15;48;5;238m              \u001b[38;5;0;48;5;15m/\u001b[0m')
        print('\u001b[38;5;0;48;5;15m/\u001b[38;5;15;48;5;238m                                                      '
              '\u001b[38;5;0;48;5;15m/\u001b[0m')
        print('\u001b[38;5;0;48;5;15m////////////////////////////////////////////////////////\u001b[0m\n')
    elif argument == 'license':
        print('\nThis program is free software: you can redistribute it and/or modify it under the terms of the GNU '
              'General\nPublic License as published by the Free Software Foundation, either version 3 of the License,'
              '\nor (at your option) any later version.\n\nThis program is distributed in the hope that it will be '
              'useful, but WITHOUT ANY WARRANTY;\nwithout even the implied warranty of MERCHANTABILITY or FITNESS FOR A'
              ' PARTICULAR PURPOSE.\nSee the GNU General Public License for more details.'
              '\n\nhttps://opensource.org/licenses/GPL-3.0\n')
    elif argument == 'add':
        print('\n\u001b[38;5;15;48;5;238mUSAGE: sshyp add {FLAG {<entry name>}}\u001b[0m\n')
        print('\u001b[38;5;0;48;5;15mFlags:\u001b[0m')
        print('\u001b[38;5;15;48;5;238madd:\u001b[0m')
        print(' password/-p             add a password entry')
        print(' note/-n                 add a note entry')
        print(' folder/-f               add a new folder for entries\n')
    elif argument == 'edit':
        print('\n\u001b[38;5;15;48;5;238mUSAGE: sshyp edit {FLAG {<entry name>}}\u001b[0m\n')
        print('\u001b[38;5;0;48;5;15mFlags:\u001b[0m')
        print('\u001b[38;5;15;48;5;238medit:\u001b[0m')
        print(' rename/relocate/-r      rename or relocate an entry')
        print(' username/-u             change the username of an entry')
        print(' password/-p             change the password of an entry')
        print(' url/-l                  change the url attached to an entry')
        print(' note/-n                 change the note attached to an entry\n')
    elif argument == 'copy':
        print('\n\u001b[38;5;15;48;5;238mUSAGE: sshyp copy {FLAG {<entry name>}}\u001b[0m\n')
        print('\u001b[38;5;0;48;5;15mFlags:\u001b[0m')
        print('\u001b[38;5;15;48;5;238mcopy:\u001b[0m')
        print(' username/-u             copy the username of an entry to your clipboard')
        print(' password/-p             copy the password of an entry to your clipboard')
        print(' url/-l                  copy the URL of an entry to your clipboard')
        print(' note/-n                 copy the note of an entry to your clipboard\n')


def no_arg():  # displays a list of entries and gives an option to select one for viewing
    print("\nFor a list of usable commands, run 'sshyp help'.")
    entry_list_gen()
    _read_entry = str(input('Entry to read: '))
    system(f"{gpg} -qd '{directory}{_read_entry.replace('/', '', 1)}.gpg'")
    print()


def read_shortcut():  # shortcut to quickly read an entry
    system(f"{gpg} -qd '{directory}{argument.replace('/', '', 1)}.gpg'")


def sync():  # calls sshync to sync changes to the user's server
    print('\nSyncing entries with the server device...\n')
    # check for deletions
    system(f"ssh -i '{path.expanduser('~/.ssh/sshyp')}' -p {port} {username_ssh}@{ip} \"python -c 'import sshypRemote"
           f"; sshypRemote.deletion_check(\"'\"{client_device_name}\"'\")'\"")
    system(f"sftp -p -q -i '{path.expanduser('~/.ssh/sshyp')}' -P {port} {username_ssh}@{ip}:"
           f"'/home/{username_ssh}/.config/sshyp/deletion_database' {path.expanduser('~/.config/sshyp/')}")
    try:
        _deletion_database = open(path.expanduser('~/.config/sshyp/deletion_database')).readlines()
    except (FileNotFoundError, IndexError):
        print('\nThe deletion database does not exist or is corrupted.\n')
        _deletion_database = None
        s_exit(1)
    for _file in _deletion_database:
        if _file[:-1].endswith('/'):
            try:
                if silent_sync != 1:
                    print(f"\u001b[38;5;208m{_file[:-1]}\u001b[0m has been sheared, removing...")
                rmtree(f"{path.expanduser('~/.password-pasture/')}{_file[:-1]}")
            except FileNotFoundError:
                if silent_sync != 1:
                    print('Folder does not exist locally.')
        else:
            try:
                if silent_sync != 1:
                    print(f"\u001b[38;5;208m{_file[:-1]}\u001b[0m has been sheared, removing...")
                remove(f"{path.expanduser('~/.password-pasture/')}{_file[:-1]}.gpg")
            except (FileNotFoundError, IsADirectoryError):
                if silent_sync != 1:
                    print('File does not exist locally.')
    # check for new folders
    system(f"ssh -i '{path.expanduser('~/.ssh/sshyp')}' -p {port} {username_ssh}@{ip} \"python -c 'import sshypRemote"
           f"; sshypRemote.folder_check()'\"")
    system(f"sftp -p -q -i '{path.expanduser('~/.ssh/sshyp')}' -P {port} {username_ssh}@{ip}:"
           f"'/home/{username_ssh}/.config/sshyp/folder_database' {path.expanduser('~/.config/sshyp/')}")
    try:
        _folder_database = open(path.expanduser('~/.config/sshyp/folder_database')).readlines()
    except (FileNotFoundError, IndexError):
        print('\nThe folder database does not exist or is corrupted.\n')
        _folder_database = None
        s_exit(1)
    for _folder in _folder_database:
        if Path(f"{path.expanduser('~')}{_folder[:-1]}").is_dir():
            pass
        else:
            print(f"\u001b[38;5;2m{_folder.replace('/.password-pasture/', '')[:-1]}/\u001b[0m does not exist locally, "
                  f"creating...")
            Path(f"{path.expanduser('~')}{_folder[:-1]}").mkdir(0o700, parents=True, exist_ok=True)
    # set permissions before uploading
    system('find ' + directory + ' -type d -exec chmod -R 700 {} +')
    system('find ' + directory + ' -type f -exec chmod -R 600 {} +')
    sshync.run_profile(path.expanduser('~/.config/sshyp/sshyp.sshync'))


def add_entry():  # adds a new entry
    _shm_folder, _shm_entry = None, None  # sets base-line values to avoid errors
    if argument == 'add note' or argument == 'add -n' or argument == 'add password' or argument == 'add -p':
        _entry_name = str(input('\nName of entry: '))
    else:
        _entry_name = argument.split(' ')
        del _entry_name[:2]
        _entry_name = ' '.join(_entry_name)
    if _entry_name.startswith('/'):
        _entry_name = _entry_name.replace('/', '', 1)
    if argument.startswith('add note') or argument.startswith('add -n'):
        _shm_folder, _shm_entry = shm_gen()
        system(f"nano {tmp_dir}{_shm_folder}/{_shm_entry}-n")
        _notes = open(f"{tmp_dir}{_shm_folder}/{_shm_entry}-n", 'r').read()
        open(f"{tmp_dir}{_shm_folder}/{_shm_entry}", 'w').writelines('\n\n\n\n' + _notes + '\n\n')
    elif argument.startswith('add password') or argument.startswith('add -p'):
        _username = str(input('Username: '))
        _password = str(input('Password: '))
        _url = str(input('URL: '))
        _add_note = input('Add a note to this entry? (y/N) ')
        _shm_folder, _shm_entry = shm_gen()
        if _add_note.lower() == 'y':
            system(f"nano {tmp_dir}{_shm_folder}/{_shm_entry}-n")
            _notes = open(f"{tmp_dir}{_shm_folder}/{_shm_entry}-n", 'r').read()
        else:
            _notes = ''
        open(f"{tmp_dir}{_shm_folder}/{_shm_entry}", 'w').writelines(_username + '\n' + _password + '\n' + _url +
                                                                     '\n\n' + _notes + '\n\n')
        print('\n\u001b[38;5;0;48;5;15mEntry preview:\u001b[0m\n\n' + open(f"{tmp_dir}{_shm_folder}/{_shm_entry}",
                                                                           'r').read())
    encrypt(_shm_folder, _shm_entry, _entry_name)


def add_folder():  # creates a new folder
    if argument == 'add folder' or argument == 'add -f':
        _folder_name = str(input('Name of new folder: '))
    else:
        _folder_name = argument.split(' ')
        del _folder_name[:2]
        _folder_name = ' '.join(_folder_name)
    if _folder_name.startswith('/'):
        _folder_name = _folder_name.replace('/', '', 1)
    Path(directory + _folder_name).mkdir(0o700)
    system(f"ssh -i '{path.expanduser('~/.ssh/sshyp')}' -p {port} {username_ssh}@{ip} \"mkdir -p '{directory_ssh}"
           f"{_folder_name}'\"")


def rename():  # renames an entry or folder
    if argument == 'edit rename' or argument == 'edit relocate' or argument == 'edit -r':
        entry_list_gen()
        _entry_name = str(input('What would you like to rename/relocate? '))
    else:
        _entry_name = argument.split(' ')
        del _entry_name[:2]
        _entry_name = ' '.join(_entry_name)
    _new_name = str(input('New Name: '))
    if _entry_name.startswith('/'):
        _entry_name = _entry_name.replace('/', '', 1)
    if _entry_name.endswith('/'):
        move(f"{directory}{_entry_name}", f"{directory}{_new_name}")
        system(f"ssh -i '{path.expanduser('~/.ssh/sshyp')}' -p {port} {username_ssh}@{ip} \"mkdir -p '{directory_ssh}"
               f"{_new_name}'\"")
    else:
        move(f"{directory}{_entry_name}.gpg", f"{directory}{_new_name}.gpg")
    system(f"ssh -i '{path.expanduser('~/.ssh/sshyp')}' -p {port} {username_ssh}@{ip} \"python -c 'import sshypRemote; "
           f"sshypRemote.delete(\"'\"{_entry_name}\"'\")'\"")


def edit():  # edits the contents of an entry
    _shm_folder, _shm_entry = None, None  # sets base-line values to avoid errors
    if argument == 'edit username' or argument == 'edit -u' or argument == 'edit password' or argument == 'edit -p' or \
            argument == 'edit url' or argument == 'edit -l' or argument == 'edit note' or argument == 'edit -n':
        entry_list_gen()
        _entry_name = str(input('What file would you like to edit? '))
    else:
        _entry_name = argument.split(' ')
        del _entry_name[:2]
        _entry_name = ' '.join(_entry_name)
    if _entry_name.startswith('/'):
        _entry_name = _entry_name.replace('/', '', 1)
    if not Path(f"{directory}{_entry_name}.gpg").is_file():
        print("\nYou are trying to edit a file that does not exist!\n")
        s_exit(1)
    if argument.startswith('edit username') or argument.startswith('edit -u'):
        _detail = str(input('New Username: '))
        _shm_folder, _shm_entry = shm_gen()
        system(f"{gpg} -qd --output {tmp_dir}{_shm_folder}/{_shm_entry} '{directory}{_entry_name}.gpg'")
        replace_line(f"{tmp_dir}{_shm_folder}/{_shm_entry}", 0, _detail + '\n')
    elif argument.startswith('edit password') or argument.startswith('edit -p'):
        _detail = str(input('New Password: '))
        _shm_folder, _shm_entry = shm_gen()
        system(f"{gpg} -qd --output {tmp_dir}{_shm_folder}/{_shm_entry} '{directory}{_entry_name}.gpg'")
        replace_line(f"{tmp_dir}{_shm_folder}/{_shm_entry}", 1, _detail + '\n')
    elif argument.startswith('edit url') or argument.startswith('edit -l'):
        _detail = str(input('New URL: '))
        _shm_folder, _shm_entry = shm_gen()
        system(f"{gpg} -qd --output {tmp_dir}{_shm_folder}/{_shm_entry} '{directory}{_entry_name}.gpg'")
        replace_line(f"{tmp_dir}{_shm_folder}/{_shm_entry}", 2, _detail + '\n')
    elif argument.startswith('edit note') or argument.startswith('edit -n'):
        _shm_folder, _shm_entry = shm_gen()
        system(f"{gpg} -qd --output {tmp_dir}{_shm_folder}/{_shm_entry} '{directory}{_entry_name}.gpg'")
        edit_note(_shm_folder, _shm_entry)
    remove(f"{directory}{_entry_name}.gpg")
    print('\n\u001b[38;5;0;48;5;15mEntry preview:\u001b[0m\n\n' + open(f"{tmp_dir}{_shm_folder}/{_shm_entry}",
                                                                       'r').read())
    encrypt(_shm_folder, _shm_entry, _entry_name)


def gen():  # generates a password for a new or an existing entry
    _username, _url, _notes = None, None, None  # sets base-line values to avoid errors
    if argument == 'gen update' or argument == 'gen -u' or argument == 'gen':
        if argument == 'gen update' or argument == 'gen -u':
            entry_list_gen()
        else:
            print()
        _entry_name = str(input('Name of service: '))
    elif argument.startswith('gen update') or argument.startswith('gen -u'):
        _entry_name = argument.split(' ')
        del _entry_name[:2]
        _entry_name = ' '.join(_entry_name)
    else:
        _entry_name = argument.split(' ')
        del _entry_name[:1]
        _entry_name = ' '.join(_entry_name)
    if _entry_name.startswith('/'):
        _entry_name = _entry_name.replace('/', '', 1)
    if argument.startswith('gen update') or argument.startswith('gen -u'):
        if not Path(f"{directory}{_entry_name}.gpg").is_file():
            print("\nYou are trying to edit a file that does not exist!\n")
            s_exit(1)
    else:
        _username = str(input('Username: '))
    _password = pass_gen()
    if not argument.startswith('gen update') and not argument.startswith('gen -u'):
        _url = str(input('URL: '))
        _add_note = input('Add a note to this entry? (y/N) ')
        _shm_folder, _shm_entry = shm_gen()
        if _add_note.lower() == 'y':
            system(f"nano {tmp_dir}{_shm_folder}/{_shm_entry}-n")
            _notes = open(f"{tmp_dir}{_shm_folder}/{_shm_entry}-n", 'r').read()
        else:
            _notes = ''
        open(f"{tmp_dir}{_shm_folder}/{_shm_entry}", 'w').writelines(_username + '\n' + _password + '\n' + _url + '\n\n'
                                                                     + _notes + '\n\n')
        print('\n\u001b[38;5;0;48;5;15mEntry preview:\u001b[0m\n\n' + open(f"{tmp_dir}{_shm_folder}/{_shm_entry}",
                                                                           'r').read())
        encrypt(_shm_folder, _shm_entry, _entry_name)
    else:
        _shm_folder, _shm_entry = shm_gen()
        system(f"{gpg} -qd --output {tmp_dir}{_shm_folder}/{_shm_entry} '{directory}{_entry_name}.gpg'")
        replace_line(f"{tmp_dir}{_shm_folder}/{_shm_entry}", 1, _password + '\n')
        remove(f"{directory}{_entry_name}.gpg")
        print('\n\u001b[38;5;0;48;5;15mEntry preview:\u001b[0m\n\n' + open(f"{tmp_dir}{_shm_folder}/{_shm_entry}",
                                                                           'r').read())
        encrypt(_shm_folder, _shm_entry, _entry_name)


def copy_data():  # copies a specified field of an entry to the clipboard
    if argument == 'copy username' or argument == 'copy -u' or argument == 'copy password' or argument == 'copy -p' \
            or argument == 'copy url' or argument == 'copy -l' or argument == 'copy note' or argument == 'copy -n':
        entry_list_gen()
        _read_entry = str(input('Entry to copy: '))
    else:
        _read_entry = argument.split(' ')
        del _read_entry[:2]
        _read_entry = ' '.join(_read_entry)
    if not Path(f"{directory}{_read_entry}.gpg").is_file():
        print("\nThe file does not exist!\n")
        s_exit(1)
    _shm_folder, _shm_entry = shm_gen()
    system(f"{gpg} -qd --output {tmp_dir}{_shm_folder}/{_shm_entry} '{directory}{_read_entry}.gpg'")
    _copy_line = open(f"{tmp_dir}{_shm_folder}/{_shm_entry}", 'r').readlines()
    if uname()[0] == 'Haiku':  # clipboard method detection
        if argument.startswith('copy username') or argument.startswith('copy -u'):
            system('clipboard -c ' + "'" + _copy_line[0].replace('\n', '').replace("'", "'\\''") + "'")
        elif argument.startswith('copy password') or argument.startswith('copy -p'):
            system('clipboard -c ' + "'" + _copy_line[1].replace('\n', '').replace("'", "'\\''") + "'")
        elif argument.startswith('copy url') or argument.startswith('copy -l'):
            system('clipboard -c ' + "'" + _copy_line[2].replace('\n', '').replace("'", "'\\''") + "'")
        elif argument.startswith('copy note') or argument.startswith('copy -n'):
            system('clipboard -c ' + "'" + _copy_line[4].replace('\n', '').replace("'", "'\\''") + "'")
    elif Path("/data/data/com.termux").exists():
        if argument.startswith('copy username') or argument.startswith('copy -u'):
            system('termux-clipboard-set ' + "'" + _copy_line[0].replace('\n', '').replace("'", "'\\''") + "'")
        elif argument.startswith('copy password') or argument.startswith('copy -p'):
            system('termux-clipboard-set ' + "'" + _copy_line[1].replace('\n', '').replace("'", "'\\''") + "'")
        elif argument.startswith('copy url') or argument.startswith('copy -l'):
            system('termux-clipboard-set ' + "'" + _copy_line[2].replace('\n', '').replace("'", "'\\''") + "'")
        elif argument.startswith('copy note') or argument.startswith('copy -n'):
            system('termux-clipboard-set ' + "'" + _copy_line[4].replace('\n', '').replace("'", "'\\''") + "'")
    elif environ.get('WAYLAND_DISPLAY') == 'wayland-0':
        if argument.startswith('copy username') or argument.startswith('copy -u'):
            system('wl-copy ' + "'" + _copy_line[0].replace('\n', '').replace("'", "'\\''") + "'")
        elif argument.startswith('copy password') or argument.startswith('copy -p'):
            system('wl-copy ' + "'" + _copy_line[1].replace('\n', '').replace("'", "'\\''") + "'")
        elif argument.startswith('copy url') or argument.startswith('copy -l'):
            system('wl-copy ' + "'" + _copy_line[2].replace('\n', '').replace("'", "'\\''") + "'")
        elif argument.startswith('copy note') or argument.startswith('copy -n'):
            system('wl-copy ' + "'" + _copy_line[4].replace('\n', '').replace("'", "'\\''") + "'")
    else:
        if argument.startswith('copy username') or argument.startswith('copy -u'):
            system('echo -n ' + "'" + _copy_line[0].replace('\n', '').replace("'", "'\\''") + "'" + ' | xclip -sel c')
        elif argument.startswith('copy password') or argument.startswith('copy -p'):
            system('echo -n ' + "'" + _copy_line[1].replace('\n', '').replace("'", "'\\''") + "'" + ' | xclip -sel c')
        elif argument.startswith('copy url') or argument.startswith('copy -l'):
            system('echo -n ' + "'" + _copy_line[2].replace('\n', '').replace("'", "'\\''") + "'" + ' | xclip -sel c')
        elif argument.startswith('copy note') or argument.startswith('copy -n'):
            system('echo -n ' + "'" + _copy_line[4].replace('\n', '').replace("'", "'\\''") + "'" + ' | xclip -sel c')
    rmtree(f"{tmp_dir}{_shm_folder}")


def remove_data():  # deletes an entry from the server and flags it for local deletion on sync
    if argument == 'shear' or argument == '-rm':
        entry_list_gen()
        _entry_name = str(input('What would you like to delete? '))
    else:
        _entry_name = argument.split(' ')
        del _entry_name[:1]
        _entry_name = ' '.join(_entry_name)
    if _entry_name.startswith('/'):
        _entry_name = _entry_name.replace('/', '', 1)
    try:
        system(f"{gpg} -qd --output {tmp_dir}sshyp.lock {path.expanduser('~/.config/sshyp/lock.gpg')}")
        _unlock = open(f"{tmp_dir}sshyp.lock", 'r').readlines()
        remove(f"{tmp_dir}sshyp.lock")
    except FileNotFoundError:
        print('\nAccess denied.\n')
        s_exit(1)
    system(f"ssh -i '{path.expanduser('~/.ssh/sshyp')}' -p {port} {username_ssh}@{ip} \"python -c 'import sshypRemote"
           f"; sshypRemote.delete(\"'\"{_entry_name}\"'\")'\"")


if __name__ == "__main__":
    silent_sync = 0
    # retrieve typed argument
    argument_list, argument = argv, ''
    del argument_list[0]
    for _argument in argument_list:
        argument += _argument + ' '
    argument = argument[:-1]
    if uname()[0] == 'Haiku':  # set proper gpg command for OS
        gpg = 'gpg --pinentry-mode loopback'
    else:
        gpg = 'gpg'

    # import saved userdata
    if argument != 'tweak':
        device_type = ''
        tmp_dir = path.expanduser('~/.config/sshyp/tmp/')
        try:
            device_type = open(path.expanduser('~/.config/sshyp/sshyp-device')).read().strip()
            if device_type == 'c':
                gpg_id = open(path.expanduser('~/.config/sshyp/sshyp-gpg')).read().strip()
                ssh_info = sshync.get_profile(path.expanduser('~/.config/sshyp/sshyp.sshync'))
                username_ssh = ssh_info[0].replace('\n', '')
                ip = ssh_info[1].replace('\n', '')
                port = ssh_info[2].replace('\n', '')
                directory = str(ssh_info[3].replace('\n', ''))
                directory_ssh = '/home/' + username_ssh + '/.password-pasture/'
                client_device_name = listdir(path.expanduser('~/.config/sshyp/devices'))[0]
        except FileNotFoundError:
            if device_type.lower() != 's':
                print('\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!')
                print("Not all necessary configuration files are present. Please run 'sshyp tweak'!")
                print('!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n')
            s_exit(1)
    else:
        try:
            tweak()
            s_exit(0)
        except KeyboardInterrupt:
            print('\n')
            s_exit(0)

    # run function based on argument
    error = 0  # create an error flag to determine if syncing should occur at end
    if argument.startswith('/'):
        read_shortcut()
    elif argument == '':
        try:
            no_arg()
        except KeyboardInterrupt:
            print('\n')
            s_exit(0)
    elif argument == 'help' or argument == '--help' or argument == '-h' or argument == 'license' or \
            argument == 'version' or argument == '-v' or argument == 'add' or argument == 'edit' or argument == 'copy':
        print_info()
    elif argument.startswith('add note') or argument.startswith('add -n') or argument.startswith('add password') \
            or argument.startswith('add -p'):
        try:
            add_entry()
        except KeyboardInterrupt:
            print('\n')
            s_exit(0)
    elif argument.startswith('add folder') or argument.startswith('add -f'):
        try:
            add_folder()
        except KeyboardInterrupt:
            print('\n')
            s_exit(0)
    elif argument.startswith('edit rename') or argument.startswith('edit relocate') or argument.startswith('edit -r'):
        silent_sync = 1
        try:
            rename()
        except KeyboardInterrupt:
            print('\n')
            s_exit(0)
    elif argument.startswith('edit username') or argument.startswith('edit -u') or argument.startswith('edit password')\
            or argument.startswith('edit -p') or argument.startswith('edit url') or argument.startswith('edit -l') or \
            argument.startswith('edit note') or argument.startswith('edit -n'):
        try:
            edit()
        except KeyboardInterrupt:
            print('\n')
            s_exit(0)
    elif argument.startswith('gen'):
        try:
            gen()
        except KeyboardInterrupt:
            print('\n')
            s_exit(0)
    elif argument.startswith('copy username') or argument.startswith('copy -u') or argument.startswith('copy password')\
            or argument.startswith('copy -p') or argument.startswith('copy url') or argument.startswith('copy -l') \
            or argument.startswith('copy note') or argument.startswith('copy -n'):
        try:
            copy_data()
        except KeyboardInterrupt:
            print('\n')
            s_exit(0)
    elif argument.startswith('shear') or argument.startswith('-rm'):
        try:
            remove_data()
        except KeyboardInterrupt:
            print('\n')
            s_exit(0)
    elif argument == 'sync' or argument == '-s':
        sync()
    else:
        error = 1  # set error flag to 1 to stop syncing
        print("\nArgument error! Please run 'sshyp help' for a list of usable commands.\n")
        s_exit(1)

    # sync at end of program if any changes were made
    if argument != '' and argument != 'help' and argument != '--help' and argument != '-h' and argument != 'license' \
            and argument != 'add' and argument != 'sync' and argument != 'edit' and not argument. \
            startswith('copy username') and not argument.startswith('copy -u') and not argument. \
            startswith('copy password') and not argument.startswith('copy -p') and not argument. \
            startswith('copy url') and not argument.startswith('copy -l') and not argument. \
            startswith('copy note') and not argument.startswith('copy -n') and argument != 'copy' and argument \
            != 'version' and argument != '-v' and error == 0 and argument.startswith('/') is False:
        sync()

    s_exit(0)