├── .gitignore ├── LICENSE ├── LICENSE.OpenSSL ├── README.md ├── an2linuxserver.py ├── init ├── README.md ├── systemd-system │ ├── README.md │ └── an2linux.service └── systemd-user │ ├── README.md │ └── an2linux.service └── requirements.txt /.gitignore: -------------------------------------------------------------------------------- 1 | .idea/ -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | AN2Linux is licensed under the GNU General Public License version 3 with the 2 | addition of the following special exception: 3 | 4 | In addition, as a special exception, the copyright holders give 5 | permission to link the code of portions of this program with the OpenSSL 6 | library. 7 | You must obey the GNU General Public License in all respects for all of 8 | the code used other than OpenSSL. 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It is safest 643 | to attach them to the start of each source file to most effectively 644 | state the exclusion of warranty; and each file should have at least 645 | the "copyright" line and a pointer to where the full notice is found. 646 | 647 | 648 | Copyright (C) 649 | 650 | This program is free software: you can redistribute it and/or modify 651 | it under the terms of the GNU General Public License as published by 652 | the Free Software Foundation, either version 3 of the License, or 653 | (at your option) any later version. 654 | 655 | This program is distributed in the hope that it will be useful, 656 | but WITHOUT ANY WARRANTY; without even the implied warranty of 657 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 658 | GNU General Public License for more details. 659 | 660 | You should have received a copy of the GNU General Public License 661 | along with this program. If not, see . 662 | 663 | Also add information on how to contact you by electronic and paper mail. 664 | 665 | If the program does terminal interaction, make it output a short 666 | notice like this when it starts in an interactive mode: 667 | 668 | Copyright (C) 669 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 670 | This is free software, and you are welcome to redistribute it 671 | under certain conditions; type `show c' for details. 672 | 673 | The hypothetical commands `show w' and `show c' should show the appropriate 674 | parts of the General Public License. Of course, your program's commands 675 | might be different; for a GUI interface, you would use an "about box". 676 | 677 | You should also get your employer (if you work as a programmer) or school, 678 | if any, to sign a "copyright disclaimer" for the program, if necessary. 679 | For more information on this, and how to apply and follow the GNU GPL, see 680 | . 681 | 682 | The GNU General Public License does not permit incorporating your program 683 | into proprietary programs. If your program is a subroutine library, you 684 | may consider it more useful to permit linking proprietary applications with 685 | the library. If this is what you want to do, use the GNU Lesser General 686 | Public License instead of this License. But first, please read 687 | . 688 | -------------------------------------------------------------------------------- /LICENSE.OpenSSL: -------------------------------------------------------------------------------- 1 | 2 | LICENSE ISSUES 3 | ============== 4 | 5 | The OpenSSL toolkit stays under a dual license, i.e. both the conditions of 6 | the OpenSSL License and the original SSLeay license apply to the toolkit. 7 | See below for the actual license texts. 8 | 9 | OpenSSL License 10 | --------------- 11 | 12 | /* ==================================================================== 13 | * Copyright (c) 1998-2016 The OpenSSL Project. All rights reserved. 14 | * 15 | * Redistribution and use in source and binary forms, with or without 16 | * modification, are permitted provided that the following conditions 17 | * are met: 18 | * 19 | * 1. Redistributions of source code must retain the above copyright 20 | * notice, this list of conditions and the following disclaimer. 21 | * 22 | * 2. Redistributions in binary form must reproduce the above copyright 23 | * notice, this list of conditions and the following disclaimer in 24 | * the documentation and/or other materials provided with the 25 | * distribution. 26 | * 27 | * 3. All advertising materials mentioning features or use of this 28 | * software must display the following acknowledgment: 29 | * "This product includes software developed by the OpenSSL Project 30 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 31 | * 32 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 33 | * endorse or promote products derived from this software without 34 | * prior written permission. For written permission, please contact 35 | * openssl-core@openssl.org. 36 | * 37 | * 5. Products derived from this software may not be called "OpenSSL" 38 | * nor may "OpenSSL" appear in their names without prior written 39 | * permission of the OpenSSL Project. 40 | * 41 | * 6. Redistributions of any form whatsoever must retain the following 42 | * acknowledgment: 43 | * "This product includes software developed by the OpenSSL Project 44 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 45 | * 46 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 47 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 49 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 50 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 51 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 52 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 53 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 54 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 55 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 56 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 57 | * OF THE POSSIBILITY OF SUCH DAMAGE. 58 | * ==================================================================== 59 | * 60 | * This product includes cryptographic software written by Eric Young 61 | * (eay@cryptsoft.com). This product includes software written by Tim 62 | * Hudson (tjh@cryptsoft.com). 63 | * 64 | */ 65 | 66 | Original SSLeay License 67 | ----------------------- 68 | 69 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 70 | * All rights reserved. 71 | * 72 | * This package is an SSL implementation written 73 | * by Eric Young (eay@cryptsoft.com). 74 | * The implementation was written so as to conform with Netscapes SSL. 75 | * 76 | * This library is free for commercial and non-commercial use as long as 77 | * the following conditions are aheared to. The following conditions 78 | * apply to all code found in this distribution, be it the RC4, RSA, 79 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation 80 | * included with this distribution is covered by the same copyright terms 81 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). 82 | * 83 | * Copyright remains Eric Young's, and as such any Copyright notices in 84 | * the code are not to be removed. 85 | * If this package is used in a product, Eric Young should be given attribution 86 | * as the author of the parts of the library used. 87 | * This can be in the form of a textual message at program startup or 88 | * in documentation (online or textual) provided with the package. 89 | * 90 | * Redistribution and use in source and binary forms, with or without 91 | * modification, are permitted provided that the following conditions 92 | * are met: 93 | * 1. Redistributions of source code must retain the copyright 94 | * notice, this list of conditions and the following disclaimer. 95 | * 2. Redistributions in binary form must reproduce the above copyright 96 | * notice, this list of conditions and the following disclaimer in the 97 | * documentation and/or other materials provided with the distribution. 98 | * 3. All advertising materials mentioning features or use of this software 99 | * must display the following acknowledgement: 100 | * "This product includes cryptographic software written by 101 | * Eric Young (eay@cryptsoft.com)" 102 | * The word 'cryptographic' can be left out if the rouines from the library 103 | * being used are not cryptographic related :-). 104 | * 4. If you include any Windows specific code (or a derivative thereof) from 105 | * the apps directory (application code) you must include an acknowledgement: 106 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 107 | * 108 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 109 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 110 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 111 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 112 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 113 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 114 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 115 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 116 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 117 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 118 | * SUCH DAMAGE. 119 | * 120 | * The licence and distribution terms for any publically available version or 121 | * derivative of this code cannot be changed. i.e. this code cannot simply be 122 | * copied and put under another distribution licence 123 | * [including the GNU Public Licence.] 124 | */ 125 | 126 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # AN2Linux - server 2 | Sync Android notifications encrypted using TLS to a Linux desktop over WiFi, Mobile data or Bluetooth. 3 | 4 | This is the server part of AN2Linux which will run on your computer. 5 | 6 | The Android app can be found here: [https://github.com/rootkiwi/an2linuxclient/](https://github.com/rootkiwi/an2linuxclient/) 7 | 8 | ## Dependencies 9 | I'm using archlinux but I've added here what I think to be the package 10 | names for debian/ubuntu as well. 11 | 12 | * **python (3.4+)** 13 | ``` 14 | Arch: python 15 | Debian / Ubuntu: python3 16 | ``` 17 | 18 | * **libnotify** 19 | ``` 20 | Arch: libnotify 21 | Debian / Ubuntu: libnotify4 gir1.2-notify-0.7 gir1.2-gdkpixbuf-2.0 22 | ``` 23 | 24 | * **python-gobject** 25 | ``` 26 | Arch: python-gobject 27 | Debian / Ubuntu: python3-gi 28 | ``` 29 | 30 | * **openssl (1.0.1+)** 31 | 32 | 33 | ## Dependencies for bluetooth 34 | 35 | * **BlueZ dev files** 36 | ``` 37 | Arch: bluez-libs 38 | Debian / Ubuntu: libbluetooth-dev 39 | ``` 40 | 41 | * **PyBluez** with normal package manager 42 | ``` 43 | Arch: python-pybluez 44 | Debian / Ubuntu: python3-bluez 45 | ``` 46 | 47 | 48 | * **PyBluez** or with pip 49 | ``` 50 | Arch: python-pip 51 | Debian / Ubuntu: python3-pip 52 | 53 | pip3 install pybluez 54 | ``` 55 | 56 | ## How to use 57 | First time just run `an2linuxserver.py` and follow the instructions. 58 | 59 | AN2Linux uses TLS for encryption with both client and server authentication. 60 | That means that the client (android) and the server (your computer) 61 | need to exchange certificates first. 62 | 63 | To initiate pairing you must have `an2linuxserver.py` running and then in the 64 | android app press initiate pairing when in the process of adding a new server. 65 | 66 | ### For bluetooth 67 | First you need to pair your phone and computer with each other (the normal 68 | bluetooth pairing), and then do the certificate exchange as explained above. 69 | 70 | Why use TLS over bluetooth when bluetooth is already encrypted? 71 | 72 | Well, firstly, because I wanted to try :) 73 | 74 | And secondly, from the little I've read about bluetooth it seems that the 75 | encryption key size negotiated can be very small. 76 | 77 | #### PyBluez not working? 78 | I'm using archlinux so I'm going to tell you how it works for me, I have no 79 | idea how it works on other distros. It may work out of the box or it may not, just try it. 80 | 81 | This is the error I get without the fixes below:
82 | `bluetooth.btcommon.BluetoothError: (13, 'Permission denied')` 83 | 84 | So, if you're not using archlinux but still are using systemd and get an error like 85 | that maybe you should try something similar. 86 | 87 | #### Edit bluetooth.service in an override file 88 | ``` 89 | systemctl edit bluetooth.service 90 | ``` 91 | 92 | #### Add the following lines 93 | ``` 94 | [Service] 95 | ExecStart= 96 | ExecStart=/usr/lib/bluetooth/bluetoothd -C 97 | ExecStartPost=/bin/chmod 662 /var/run/sdp 98 | ``` 99 | 100 | #### then apply changes 101 | ``` 102 | systemctl daemon-reload 103 | systemctl restart bluetooth.service 104 | ``` 105 | 106 | More info about this problem: 107 | https://bbs.archlinux.org/viewtopic.php?id=201672. 108 | 109 | ## Config directory 110 | First time when running `an2linuxserver.py` it will create the directory: 111 | `$XDG_CONFIG_HOME/an2linux/`. 112 | 113 | If `$XDG_CONFIG_HOME` is not set it defaults to: `$HOME/.config/an2linux/`. 114 | 115 | In this config directory a few files will be created. 116 | 117 | #### Config file 118 | A default config file named `config` will be created with the settings: 119 | - `tcp_server` **[on/off]** *default:* **on** 120 | - `tcp_port` **[0-65535]** *default:* **46352** 121 | - `bluetooth_server` **[on/off]** *default:* **off** 122 | - `bluetooth_support_kitkat` **[on/off]** *default:* **off** 123 | - `notification_timeout` **[integer]** *default:* **5** 124 | - `list_size_duplicates` **[0-50]** *default:* **0** 125 | - `ignore_duplicates_list_for_titles` **[comma-separated list]** *default:* **AN2Linux, title** 126 | - `keywords_to_ignore` **[comma-separated list]** *default:* **''** 127 | 128 | Open that config file for more detailed info about every setting. 129 | 130 | #### Server RSA key and certificate 131 | AN2Linux will generate a 4096 bit RSA key `rsakey.pem` and a self-signed certificate `certificate.pem`. 132 | 133 | Just delete those and restart AN2Linux if you want to generate a new key and certificate. 134 | 135 | #### Trusted certificates 136 | After a successful certificate exchange AN2linux will create a file named 137 | `authorized_certs`. 138 | 139 | Every line in that file will represent a trused certificate. 140 | 141 | It will be in the format `SHA256: `. 142 | 143 | That first part `SHA256...` is not used by AN2linux at all, it's just 144 | added as a convenience to the user to help distinguish between multiple certificates. 145 | 146 | #### Diffie–Hellman ephemeral 147 | If the setting `bluetooth_support_kitkat` is turned `on` AN2linux will also generate a file named `dhparam.pem`. 148 | 149 | That is because [SSLEngine](https://developer.android.com/reference/javax/net/ssl/SSLEngine.html) does not support any 150 | [ECDHE](https://en.wikipedia.org/wiki/Elliptic_curve_Diffie%E2%80%93Hellman) cipher suites 151 | until from API 20+ (Android 5.0+). 152 | 153 | ## Run AN2Linux as a service 154 | [Init/Service scripts](https://github.com/rootkiwi/an2linuxserver/tree/master/init) 155 | 156 | ## Security with a firewall 157 | a popular easy-to-use firewall for Linux is Uncomplicated Firewall (ufw) 158 | 159 | 1. install it: 160 | - on Arch: $ `sudo pacman -S ufw` 161 | - on Debian/Ubuntu: $ `sudo apt-get install ufw` 162 | 2. start and enable ufw’s systemd unit: 163 | - $ `sudo systemctl start ufw; sudo systemctl enable ufw` 164 | 3. set your mobile device's LAN ip to a static ip 165 | - in the WiFi settings, long press the network you're connected to and tap "modify network" 166 | - if authentication is required (it should) and you're authenticated already leave the password feild empty 167 | - (Google it for the rest of steps, which depend on your region/router for the Gateway address) 168 | 4. allow traffic limited to one port, from your mobile device's LAN static ip 169 | - $ `sudo ufw allow from to any port ` 170 | 171 | ## License 172 | [GNU General Public License 3](https://www.gnu.org/licenses/gpl-3.0.html), 173 | with the additional special exception to link portions of this program with the OpenSSL library. 174 | 175 | See [LICENSE](LICENSE) for more details. 176 | -------------------------------------------------------------------------------- /an2linuxserver.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | # 3 | # Copyright 2017 rootkiwi 4 | # 5 | # AN2Linux-server is licensed under GNU General Public License 3, with the additional 6 | # special exception to link portions of this program with the OpenSSL library. 7 | # 8 | # See LICENSE for more details. 9 | 10 | import logging 11 | import sys 12 | try: 13 | import ssl 14 | except ImportError as e: 15 | print('Dependency missing: openssl') 16 | print(e) 17 | sys.exit(1) 18 | try: 19 | import gi 20 | from gi.repository import GLib 21 | except ImportError as e: 22 | print('Dependency missing: python-gobject') 23 | print(e) 24 | sys.exit(1) 25 | try: 26 | gi.require_version('Notify', '0.7') 27 | from gi.repository import Notify 28 | except (ImportError, ValueError) as e: 29 | print('Dependency missing: libnotify') 30 | print(e) 31 | sys.exit(1) 32 | try: 33 | gi.require_version('GdkPixbuf', '2.0') 34 | from gi.repository import GdkPixbuf 35 | except (ImportError, ValueError) as e: 36 | print('Dependency missing: GdkPixbuf') 37 | print(e) 38 | sys.exit(1) 39 | import threading 40 | import datetime 41 | import os 42 | import configparser 43 | import struct 44 | import socketserver 45 | import socket 46 | import signal 47 | import time 48 | import subprocess 49 | import hashlib 50 | import termios 51 | import base64 52 | import select 53 | import re 54 | from collections import deque 55 | 56 | 57 | class Notification: 58 | 59 | # this is a deque of the latest notifications hash to be able to skip duplicates 60 | latest_notifications = None 61 | 62 | # this is a list of notification titles that ignore the latest_notifications list 63 | titles_that_ignore_latest = None 64 | 65 | # list of keywords that trigger notifcation to be ignored 66 | keywords_to_ignore = None 67 | 68 | #regexes of title and contents of notifications to be ignored 69 | regexes_to_ignore_in_title = None 70 | regexes_to_ignore_in_content = None 71 | 72 | def __init__(self, title, message, icon_bytes=None): 73 | self.title = title 74 | self.message = message 75 | self.icon_bytes = icon_bytes 76 | self.notif_hash = hashlib.sha256(title.encode() + message.encode() 77 | + icon_bytes if icon_bytes is not None else b'').digest() 78 | 79 | def show(self): 80 | if (self.notif_hash not in Notification.latest_notifications 81 | or self.title in Notification.titles_that_ignore_latest) \ 82 | and not any(kw in self.title for kw in Notification.keywords_to_ignore if kw != '') \ 83 | and not any(regex.match(self.title) for regex in Notification.regexes_to_ignore_in_title) \ 84 | and not any(regex.match(self.message) for regex in Notification.regexes_to_ignore_in_content): 85 | Notification.latest_notifications.append(self.notif_hash) 86 | self.notif = Notify.Notification.new(self.title, self.message, '') 87 | self.notif.set_timeout(notification_timeout_milliseconds) 88 | self.notif.set_hint('desktop-entry', GLib.Variant('s', 'an2linux')) 89 | if self.icon_bytes is not None: 90 | pixbuf_loader = GdkPixbuf.PixbufLoader.new() 91 | pixbuf_loader.write(self.icon_bytes) 92 | pixbuf_loader.close() 93 | self.notif.set_image_from_pixbuf(pixbuf_loader.get_pixbuf()) 94 | try: 95 | self.notif.show() 96 | except Exception as e: 97 | logging.error('(Notification) Error showing notification:' \ 98 | ' {}'.format(e)); 99 | logging.error('Please make sure you have a notification' \ 100 | ' server installed on your system') 101 | 102 | 103 | class TCPHandler(socketserver.BaseRequestHandler): 104 | 105 | active_pairing_connection = False 106 | cancel_pairing = False 107 | 108 | def handle(self): 109 | try: 110 | conn_type = self.request.recv(1) 111 | if conn_type == PAIR_REQUEST and not TCPHandler.active_pairing_connection: 112 | TCPHandler.active_pairing_connection = True 113 | TCPHandler.cancel_pairing = False 114 | try: 115 | self.handle_pair_request() 116 | except Exception as e: 117 | logging.error('(TCP) Error pair_request: {}'.format(e)) 118 | TCPHandler.active_pairing_connection = False 119 | elif conn_type == NOTIF_CONN: 120 | try: 121 | self.handle_notification_connection() 122 | except Exception as e: 123 | logging.error('(TCP) Error notif_conn: {}'.format(e)) 124 | except Exception as e: 125 | logging.error('(TCP) Error handle: {}'.format(e)) 126 | 127 | def handle_pair_request(self): 128 | pair_tls_ctx = ssl.SSLContext(protocol=ssl.PROTOCOL_TLSv1_2) 129 | pair_tls_ctx.load_cert_chain(CERTIFICATE_PATH, RSA_PRIVATE_KEY_PATH) 130 | pair_tls_ctx.set_ciphers('ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA') 131 | pair_tls_ctx.set_ecdh_curve('prime256v1') 132 | pair_tls_ctx.options |= ssl.OP_SINGLE_ECDH_USE 133 | 134 | try: 135 | tls_socket = pair_tls_ctx.wrap_socket(self.request, server_side=True) 136 | except ssl.SSLError as ssle: 137 | logging.error('(TCP) Failed TLS handshake pair_request: {}'.format(ssle)) 138 | return 139 | 140 | ip = self.client_address[0] 141 | # remove first ::ffff: if ipv4 mapped ipv6 address 142 | if len(ip) > 7 and ip[:7] == '::ffff:': 143 | ip = ip[7:] 144 | logging.info('(TCP) Pair request from: {}\n'.format(ip)) 145 | 146 | client_cert_size = struct.unpack('>I', recvall(tls_socket, 4))[0] 147 | client_cert = recvall(tls_socket, client_cert_size) 148 | 149 | sha256 = hashlib.sha256(client_cert + SERVER_CERT_DER).hexdigest().upper() 150 | sha256_format = [sha256[x:x + 2] for x in range(0, len(sha256), 2)] 151 | 152 | print('It is very important that you verify that the following hash matches what is viewed on your phone\n' 153 | 'It is a sha256 hash like so: sha256(client_cert + server_cert)\n\n' 154 | 'If the hash don\'t match there could be a man-in-the-middle attack\n' 155 | 'Or something else is not right, you should abort if they don\'t match!\n') 156 | print(' '.join(sha256_format[:8])) 157 | print(' '.join(sha256_format[8:16])) 158 | print(' '.join(sha256_format[16:24])) 159 | print(' '.join(sha256_format[24:])) 160 | 161 | self.server_allow_pair = False 162 | self.client_allow_pair = False 163 | 164 | try: 165 | termios.tcflush(sys.stdin, termios.TCIFLUSH) 166 | except Exception: 167 | pass 168 | self.user_input_prompt = 'Enter "yes" to accept pairing or "no" to deny: ' 169 | print('\n{}'.format(self.user_input_prompt), end='') 170 | 171 | threading.Thread(target=self.pair_response_thread, args=(tls_socket,)).start() 172 | while not TCPHandler.cancel_pairing: 173 | ready = select.select([sys.stdin], [], [], 1)[0] 174 | if ready: 175 | user_input = sys.stdin.readline().strip() 176 | if user_input.casefold() == 'yes'.casefold(): 177 | tls_socket.sendall(ACCEPT_PAIRING) 178 | self.server_allow_pair = True 179 | if not self.client_allow_pair: 180 | print('Waiting for client response') 181 | while not TCPHandler.cancel_pairing: 182 | if self.client_allow_pair: 183 | add_to_authorized_certs(client_cert) 184 | break 185 | else: 186 | time.sleep(1) 187 | break 188 | elif user_input.casefold() == 'no'.casefold(): 189 | tls_socket.sendall(DENY_PAIRING) 190 | print('Pairing canceled') 191 | TCPHandler.cancel_pairing = True 192 | else: 193 | print(self.user_input_prompt, end='', flush=True) 194 | 195 | def pair_response_thread(self, tls_socket): 196 | while not TCPHandler.cancel_pairing: 197 | ready = select.select([tls_socket], [], [], 1)[0] 198 | if ready: 199 | client_response = tls_socket.recv(1) 200 | if client_response == ACCEPT_PAIRING: 201 | self.client_allow_pair = True 202 | if self.server_allow_pair: 203 | print('Client accepted pairing') 204 | break 205 | else: 206 | print('\r{} (Client accepted pairing): '.format(self.user_input_prompt[:-2]), end='') 207 | # to notice if socket closed 208 | while TCPHandler.active_pairing_connection: 209 | ready = select.select([tls_socket], [], [], 1)[0] 210 | if ready and tls_socket.recv(1) == b'': 211 | if not self.server_allow_pair and not TCPHandler.cancel_pairing: 212 | print('\nSocket closed') 213 | break 214 | TCPHandler.cancel_pairing = True 215 | elif client_response == DENY_PAIRING: 216 | if self.server_allow_pair: 217 | print('Client denied pairing') 218 | else: 219 | print('\nClient denied pairing') 220 | TCPHandler.cancel_pairing = True 221 | else: 222 | if not TCPHandler.cancel_pairing: 223 | print('\nSocket closed or recieved something strange') 224 | TCPHandler.cancel_pairing = True 225 | 226 | def handle_notification_connection(self): 227 | try: 228 | notif_tls_ctx.load_verify_locations(cadata=parse_authorized_certs()) 229 | tls_socket = notif_tls_ctx.wrap_socket(self.request, server_side=True) 230 | except Exception as e: 231 | logging.error('(TCP) Failed TLS handshake notif_conn: {}'.format(e)) 232 | return 233 | 234 | # one recv should not take longer than 10 sec 235 | tls_socket.settimeout(10) 236 | 237 | notification_flags = struct.unpack('>B', tls_socket.recv(1))[0] 238 | 239 | include_title = chkflags(notification_flags, FLAG_INCLUDE_TITLE) 240 | include_message = chkflags(notification_flags, FLAG_INCLUDE_MESSAGE) 241 | include_icon = chkflags(notification_flags, FLAG_INCLUDE_ICON) 242 | 243 | title = '' 244 | message = '' 245 | 246 | if include_title or include_message: 247 | title_and_or_message_size = struct.unpack('>I', recvall(tls_socket, 4))[0] 248 | title_and_or_message = recvall(tls_socket, title_and_or_message_size).decode() 249 | if include_title: 250 | title = title_and_or_message.split('|||')[0] 251 | if include_message: 252 | message = title_and_or_message.split('|||')[1] 253 | 254 | if include_icon: 255 | icon_size = struct.unpack('>I', recvall(tls_socket, 4))[0] 256 | icon_bytes = recvall(tls_socket, icon_size) 257 | try: 258 | Notification(title, message, icon_bytes).show() 259 | except Exception: 260 | Notification(title, message).show() 261 | else: 262 | Notification(title, message).show() 263 | 264 | 265 | class ThreadingDualStackServer(socketserver.ThreadingTCPServer): 266 | address_family = socket.AF_INET6 267 | 268 | def server_bind(self): 269 | self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 0) 270 | super().server_bind() 271 | 272 | 273 | class ThreadingBluetoothServer: 274 | 275 | def __init__(self): 276 | self.bluetooth_server_sock = BluetoothSocket(RFCOMM) 277 | self.bluetooth_server_sock.bind(("", PORT_ANY)) 278 | self.bluetooth_server_sock.listen(1) 279 | self.port = self.bluetooth_server_sock.getsockname()[1] 280 | 281 | # hardcoded uuid generated from https://www.uuidgenerator.net/ 282 | self.uuid = "a97fbf21-2ef3-4daf-adfb-2a53ffa87b8e" 283 | 284 | advertise_service(self.bluetooth_server_sock, "AN2Linux_bluetooth_server", 285 | service_id=self.uuid, 286 | service_classes=[self.uuid, SERIAL_PORT_CLASS], 287 | profiles=[SERIAL_PORT_PROFILE]) 288 | 289 | self.shutdown_request = False 290 | 291 | def serve_forever(self): 292 | while not self.shutdown_request: 293 | ready = select.select([self.bluetooth_server_sock], [], [], 1)[0] 294 | if ready: 295 | client_sock, client_info = self.bluetooth_server_sock.accept() 296 | threading.Thread(target=BluetoothHandler, args=(client_sock, client_info[0])).start() 297 | 298 | self.bluetooth_server_sock.close() 299 | 300 | def shutdown(self): 301 | self.shutdown_request = True 302 | 303 | 304 | class BluetoothHandler: 305 | 306 | active_pairing_connection = False 307 | cancel_pairing = False 308 | 309 | def __init__(self, socket, address): 310 | self.socket = socket 311 | self.address = address 312 | self.tls_bio = None 313 | self.incoming = None 314 | self.outgoing = None 315 | self.handle() 316 | 317 | def handle(self): 318 | try: 319 | conn_type = self.socket.recv(1) 320 | if conn_type == PAIR_REQUEST and not BluetoothHandler.active_pairing_connection: 321 | BluetoothHandler.active_pairing_connection = True 322 | BluetoothHandler.cancel_pairing = False 323 | try: 324 | self.handle_pair_request() 325 | except Exception as e: 326 | logging.error('(Bluetooth) Error pair_request: {}'.format(e)) 327 | BluetoothHandler.active_pairing_connection = False 328 | elif conn_type == NOTIF_CONN: 329 | try: 330 | self.handle_notification_connection() 331 | except Exception as e: 332 | logging.error('(Bluetooth) Error notif_conn: {}'.format(e)) 333 | except Exception as e: 334 | logging.error('(Bluetooth) Error handle: {}'.format(e)) 335 | finally: 336 | self.socket.close() 337 | 338 | def do_handshake(self): 339 | # incoming <- ClientHello 340 | client_hello_size = struct.unpack('>I', recvall(self.socket, 4))[0] 341 | client_hello = recvall(self.socket, client_hello_size) 342 | self.incoming.write(client_hello) 343 | 344 | # ServerHello..ServerHelloDone -> outgoing 345 | try: 346 | self.tls_bio.do_handshake() 347 | except ssl.SSLWantReadError: 348 | server_hello = self.outgoing.read() 349 | server_hello_size = struct.pack('>I', len(server_hello)) 350 | self.socket.sendall(server_hello_size) 351 | self.socket.sendall(server_hello) 352 | 353 | # incoming <- [client]Certificate*..ClientKeyExchange..Finished 354 | client_keyexchange_size = struct.unpack('>I', recvall(self.socket, 4))[0] 355 | client_keyexchange = recvall(self.socket, client_keyexchange_size) 356 | self.incoming.write(client_keyexchange) 357 | 358 | # ChangeCipherSpec..Finished -> outgoing 359 | self.tls_bio.do_handshake() 360 | server_change_cipher_spec = self.outgoing.read() 361 | server_change_cipher_spec_size = struct.pack('>I', len(server_change_cipher_spec)) 362 | self.socket.sendall(server_change_cipher_spec_size) 363 | self.socket.sendall(server_change_cipher_spec) 364 | 365 | def tls_read_full_record(self): 366 | pending = 1 367 | record = bytearray() 368 | while pending > 0: 369 | record.extend(self.tls_bio.read(4096)) 370 | pending = self.tls_bio.pending() 371 | return record 372 | 373 | def tls_encrypt(self, app_data): 374 | self.tls_bio.write(app_data) 375 | return self.outgoing.read() 376 | 377 | def tls_decrypt(self, net_data): 378 | self.incoming.write(net_data) 379 | return self.tls_read_full_record() 380 | 381 | def handle_pair_request(self): 382 | if bluetooth_support_kitkat: 383 | pair_tls_ctx = ssl.SSLContext(protocol=ssl.PROTOCOL_TLSv1) 384 | pair_tls_ctx.set_ciphers('DHE-RSA-AES256-SHA') 385 | pair_tls_ctx.load_dh_params(DHPARAM_PATH) 386 | else: 387 | pair_tls_ctx = ssl.SSLContext(protocol=ssl.PROTOCOL_TLSv1_2) 388 | pair_tls_ctx.set_ciphers('ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA') 389 | pair_tls_ctx.set_ecdh_curve('prime256v1') 390 | 391 | pair_tls_ctx.load_cert_chain(CERTIFICATE_PATH, RSA_PRIVATE_KEY_PATH) 392 | 393 | self.incoming = ssl.MemoryBIO() 394 | self.outgoing = ssl.MemoryBIO() 395 | self.tls_bio = pair_tls_ctx.wrap_bio(incoming=self.incoming, outgoing=self.outgoing, server_side=True) 396 | 397 | try: 398 | self.do_handshake() 399 | except ssl.SSLError as ssle: 400 | logging.error('(Bluetooth) Failed TLS handshake pair_request: {}'.format(ssle)) 401 | return 402 | 403 | logging.info('(Bluetooth) Pair request from: {}\n'.format(self.address)) 404 | 405 | '''I don't know how else to do this when using SSLEngine/SSL_BIO, I don't see any security 406 | issue with sending the length of the encrypted data in cleartext, using something like wireshark 407 | it's possible to see the length anyway''' 408 | client_cert_size = struct.unpack('>I', recvall(self.socket, 4))[0] 409 | client_cert_encrypted = recvall(self.socket, client_cert_size) 410 | client_cert = self.tls_decrypt(client_cert_encrypted) 411 | 412 | sha256 = hashlib.sha256(client_cert + SERVER_CERT_DER).hexdigest().upper() 413 | sha256_format = [sha256[x:x + 2] for x in range(0, len(sha256), 2)] 414 | 415 | print('It is very important that you verify that the following hash matches what is viewed on your phone\n' 416 | 'It is a sha256 hash like so: sha256(client_cert + server_cert)\n\n' 417 | 'If the hash don\'t match there could be a man-in-the-middle attack\n' 418 | 'Or something else is not right, you should abort if they don\'t match!\n') 419 | print(' '.join(sha256_format[:8])) 420 | print(' '.join(sha256_format[8:16])) 421 | print(' '.join(sha256_format[16:24])) 422 | print(' '.join(sha256_format[24:])) 423 | 424 | self.server_allow_pair = False 425 | self.client_allow_pair = False 426 | 427 | try: 428 | termios.tcflush(sys.stdin, termios.TCIFLUSH) 429 | except Exception: 430 | pass 431 | self.user_input_prompt = 'Enter "yes" to accept pairing or "no" to deny: ' 432 | print('\n{}'.format(self.user_input_prompt), end='') 433 | 434 | threading.Thread(target=self.pair_response_thread).start() 435 | while not BluetoothHandler.cancel_pairing: 436 | ready = select.select([sys.stdin], [], [], 1)[0] 437 | if ready: 438 | user_input = sys.stdin.readline().strip() 439 | if user_input.casefold() == 'yes'.casefold(): 440 | encrypted = self.tls_encrypt(ACCEPT_PAIRING) 441 | encrypted_size = struct.pack('>I', len(encrypted)) 442 | self.socket.sendall(encrypted_size) 443 | self.socket.sendall(encrypted) 444 | self.server_allow_pair = True 445 | if not self.client_allow_pair: 446 | print('Waiting for client response') 447 | while not BluetoothHandler.cancel_pairing: 448 | if self.client_allow_pair: 449 | add_to_authorized_certs(client_cert) 450 | break 451 | else: 452 | time.sleep(1) 453 | break 454 | elif user_input.casefold() == 'no'.casefold(): 455 | encrypted = self.tls_encrypt(DENY_PAIRING) 456 | encrypted_size = struct.pack('>I', len(encrypted)) 457 | self.socket.sendall(encrypted_size) 458 | self.socket.sendall(encrypted) 459 | print('Pairing canceled') 460 | BluetoothHandler.cancel_pairing = True 461 | else: 462 | print(self.user_input_prompt, end='', flush=True) 463 | 464 | def pair_response_thread(self): 465 | while not BluetoothHandler.cancel_pairing: 466 | ready = select.select([self.socket], [], [], 1)[0] 467 | if ready: 468 | try: 469 | client_response_size = struct.unpack('>I', recvall(self.socket, 4))[0] 470 | client_response_encrypted = recvall(self.socket, client_response_size) 471 | client_response = self.tls_decrypt(client_response_encrypted) 472 | except Exception: 473 | print('\nSocket closed or recieved something strange') 474 | BluetoothHandler.cancel_pairing = True 475 | break 476 | if client_response == ACCEPT_PAIRING: 477 | self.client_allow_pair = True 478 | if self.server_allow_pair: 479 | print('Client accepted pairing') 480 | break 481 | else: 482 | print('\r{} (Client accepted pairing): '.format(self.user_input_prompt[:-2]), end='') 483 | # to notice if socket closed 484 | while BluetoothHandler.active_pairing_connection: 485 | ready = select.select([self.socket], [], [], 1)[0] 486 | if ready: 487 | try: 488 | self.socket.recv(1) 489 | except BluetoothError: 490 | if not self.server_allow_pair and not BluetoothHandler.cancel_pairing: 491 | print('\nSocket closed') 492 | break 493 | BluetoothHandler.cancel_pairing = True 494 | elif client_response == DENY_PAIRING: 495 | if self.server_allow_pair: 496 | print('Client denied pairing') 497 | else: 498 | print('\nClient denied pairing') 499 | BluetoothHandler.cancel_pairing = True 500 | else: 501 | if not BluetoothHandler.cancel_pairing: 502 | print('\nSocket closed or recieved something strange2') 503 | BluetoothHandler.cancel_pairing = True 504 | 505 | def handle_notification_connection(self): 506 | self.incoming = ssl.MemoryBIO() 507 | self.outgoing = ssl.MemoryBIO() 508 | try: 509 | if bluetooth_support_kitkat: 510 | notif_tls_ctx_kitkat_bt.load_verify_locations(cadata=parse_authorized_certs()) 511 | self.tls_bio = notif_tls_ctx_kitkat_bt.wrap_bio(incoming=self.incoming, outgoing=self.outgoing, 512 | server_side=True) 513 | else: 514 | notif_tls_ctx.load_verify_locations(cadata=parse_authorized_certs()) 515 | self.tls_bio = notif_tls_ctx.wrap_bio(incoming=self.incoming, outgoing=self.outgoing, server_side=True) 516 | self.do_handshake() 517 | except Exception as e: 518 | logging.error('(Bluetooth) Failed TLS handshake notif_conn: {}'.format(e)) 519 | return 520 | 521 | # one recv should not take longer than 10 sec 522 | self.socket.settimeout(10) 523 | 524 | notification_flags_size = struct.unpack('>I', recvall(self.socket, 4))[0] 525 | notification_flags_encrypted = recvall(self.socket, notification_flags_size) 526 | notification_flags = struct.unpack('>B', self.tls_decrypt(notification_flags_encrypted))[0] 527 | 528 | include_title = chkflags(notification_flags, FLAG_INCLUDE_TITLE) 529 | include_message = chkflags(notification_flags, FLAG_INCLUDE_MESSAGE) 530 | include_icon = chkflags(notification_flags, FLAG_INCLUDE_ICON) 531 | 532 | title = '' 533 | message = '' 534 | 535 | if include_title or include_message: 536 | title_and_or_message_size = struct.unpack('>I', recvall(self.socket, 4))[0] 537 | title_and_or_message_encrypted = recvall(self.socket, title_and_or_message_size) 538 | title_and_or_message = self.tls_decrypt(title_and_or_message_encrypted).decode() 539 | if include_title: 540 | title = title_and_or_message.split('|||')[0] 541 | if include_message: 542 | message = title_and_or_message.split('|||')[1] 543 | 544 | if include_icon: 545 | icon_size = struct.unpack('>I', recvall(self.socket, 4))[0] 546 | icon_encrypted = recvall(self.socket, icon_size) 547 | icon_bytes = self.tls_decrypt(icon_encrypted) 548 | try: 549 | Notification(title, message, icon_bytes).show() 550 | except Exception: 551 | Notification(title, message).show() 552 | else: 553 | Notification(title, message).show() 554 | 555 | 556 | def chkflags(flags, flag): 557 | return flags & flag == flag 558 | 559 | 560 | def recvall(sock, size): 561 | buf = bytearray() 562 | while len(buf) < size: 563 | tmp = sock.recv(size - len(buf)) 564 | if tmp == b'': 565 | raise ConnectionResetError('connection reset by peer') 566 | buf.extend(tmp) 567 | return buf 568 | 569 | 570 | def generate_dhparam(): 571 | logging.info('Since you have enabled bluetooth support for android 4.4 kitkat I will now need to') 572 | logging.info('Generate DH parameters, which is going to take a while') 573 | logging.info('On my laptop (Intel i5) it took ~16 minutes') 574 | dhparam_process = subprocess.Popen(['openssl', 'dhparam', '-out', DHPARAM_PATH, '4096'], 575 | stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True) 576 | stderr = dhparam_process.communicate()[1] 577 | if dhparam_process.returncode == 0: 578 | logging.info('Generated DH parameters 4096 bit') 579 | logging.info('Saved to: ' + DHPARAM_PATH) 580 | else: 581 | logging.error('Error generating DH parameters, exiting..') 582 | logging.error(stderr) 583 | sys.exit(1) 584 | 585 | 586 | def generate_server_private_key_and_certificate(CERTIFICATE_PATH, RSA_PRIVATE_KEY_PATH): 587 | openssl_process = subprocess.Popen(['openssl', 'req', '-x509', '-newkey', 'rsa:4096', '-nodes', '-sha256', 588 | '-keyout', RSA_PRIVATE_KEY_PATH, '-out', CERTIFICATE_PATH, 589 | '-days', '3650', '-subj', '/CN=an2linuxserver'], 590 | stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True) 591 | stderr = openssl_process.communicate()[1] 592 | if openssl_process.returncode == 0: 593 | logging.info('Generated a 4096 bit RSA private key') 594 | logging.info('Key saved to: ' + RSA_PRIVATE_KEY_PATH) 595 | logging.info('Certificate saved to: ' + CERTIFICATE_PATH) 596 | else: 597 | logging.error('Error generating private key, exiting..') 598 | logging.error(stderr) 599 | sys.exit(1) 600 | 601 | 602 | def parse_authorized_certs(): 603 | if os.path.isfile(AUTHORIZED_CERTS_PATH): 604 | with open(AUTHORIZED_CERTS_PATH, 'r') as f: 605 | try: 606 | authorized_certs = b''.join([base64.b64decode(line.split(' ')[1]) 607 | for line in f.readlines() if len(line.split(' ')) == 2]) 608 | # testing if valid certificates 609 | ssl.SSLContext(protocol=ssl.PROTOCOL_TLSv1_2).load_verify_locations(cadata=authorized_certs) 610 | return authorized_certs 611 | except Exception as e: 612 | logging.error('Corrupted authorized_certs file: {}'.format(e)) 613 | logging.error('Please look at authorized_certs and ' 614 | 'search for obvious errors located at {}'.format(AUTHORIZED_CERTS_PATH)) 615 | logging.error('Or delete the file altogether, ' 616 | 'but then you would have to pair your phone(s) again') 617 | return b'' 618 | else: 619 | return b'' 620 | 621 | 622 | def add_to_authorized_certs(cert_der): 623 | sha256 = hashlib.sha256(cert_der).hexdigest().upper() 624 | sha256_format = [sha256[x:x + 2] for x in range(0, len(sha256), 2)] 625 | if not cert_der in parse_authorized_certs(): 626 | with open(AUTHORIZED_CERTS_PATH, 'a+') as f: 627 | f.seek(0) 628 | lines = f.readlines() 629 | first_char_to_write = '' 630 | if lines: 631 | lastchar = lines[-1][-1] 632 | if lastchar != '\n': 633 | first_char_to_write = '\n' 634 | 635 | f.write(''.join([first_char_to_write, 'SHA256:', ':'.join(sha256_format), 636 | ' ', base64.b64encode(cert_der).decode(), '\n'])) 637 | 638 | logging.info('Certificate with fingerprint: {} saved successfully'.format(' '.join(sha256_format))) 639 | else: 640 | logging.info('Certificate with fingerprint: {} is already in authorized_certs'.format(' '.join(sha256_format))) 641 | 642 | 643 | def create_default_config_file_and_exit(): 644 | config_parser = configparser.ConfigParser(allow_no_value=True) 645 | config_parser['tcp'] = {'tcp_server': 'on', 646 | 'tcp_port': '46352'} 647 | config_parser.add_section('bluetooth') 648 | config_parser.set('bluetooth', 'bluetooth_server', 'off') 649 | config_parser.set('bluetooth', '\n# bluetooth_support_kitkat: enable bluetooth support for android 4.4 kitkat') 650 | config_parser.set('bluetooth', '# this setting is important for everyone using bluetooth') 651 | config_parser.set('bluetooth', '# you need to set this setting correctly otherwise it will not work') 652 | config_parser.set('bluetooth', '# if you are using android 4.4 kitkat this needs to be turned on') 653 | config_parser.set('bluetooth', '# because some cipher versions are not supported until after kitkat') 654 | config_parser.set('bluetooth', '# if you are using android 5.0+ you need to keep this setting off') 655 | config_parser.set('bluetooth', 'bluetooth_support_kitkat', 'off') 656 | config_parser.add_section('notification') 657 | config_parser.set('notification', '# notification_timeout: display notification for this many seconds') 658 | config_parser.set('notification', '# set 0 to never expire') 659 | config_parser.set('notification', '# this setting might be completely ignored by your notification server') 660 | config_parser.set('notification', 'notification_timeout', '5') 661 | config_parser.set('notification', '\n# list_size_duplicates: number of latest notifications to keep') 662 | config_parser.set('notification', '# integer 0-50, if a notification is in this list it will not be shown') 663 | config_parser.set('notification', '# set to 0 to disable') 664 | config_parser.set('notification', 'list_size_duplicates', '0') 665 | config_parser.set('notification', '\n# ignore_duplicates_list_for_titles: notification titles that ignore duplicates list') 666 | config_parser.set('notification', '# comma-separated, case-sensitive') 667 | config_parser.set('notification', 'ignore_duplicates_list_for_titles', 'AN2Linux, title') 668 | config_parser.set('notification', '\n# keywords_to_ignore: do not show notifications that include these keywords in the notification titles') 669 | config_parser.set('notification', '# comma-separated, case-sensitive. leading and trailing whitespace will be stripped.') 670 | config_parser.set('notification', 'keywords_to_ignore', '') 671 | config_parser.set('notification', '\n# regexes_to_ignore: do not show notifications who\'s contents or title match the following regexes') 672 | config_parser.set('notification', 'regexes_to_ignore_in_title', '') 673 | config_parser.set('notification', 'regexes_to_ignore_in_content', '') 674 | with open(CONF_FILE_PATH, 'w') as configfile: 675 | config_parser.write(configfile) 676 | logging.info('Created new default configuration file at "{}"'.format(CONF_FILE_PATH)) 677 | logging.info('Exiting... (why?) so you can look at and edit the configuration file, ' 678 | 'after that run this program again') 679 | sys.exit() 680 | 681 | 682 | def parse_config_or_create_new(): 683 | if not os.path.isfile(CONF_FILE_PATH): 684 | create_default_config_file_and_exit() 685 | else: 686 | try: 687 | config_parser = configparser.ConfigParser(allow_no_value=True) 688 | config_parser.read(CONF_FILE_PATH) 689 | tcp_server_enabled = config_parser.getboolean('tcp', 'tcp_server') 690 | tcp_port_number = config_parser.getint('tcp', 'tcp_port') 691 | if tcp_port_number < 0 or tcp_port_number > 65535: 692 | logging.error('Invalid port, port must be 0-65535') 693 | sys.exit(1) 694 | bluetooth_server_enabled = config_parser.getboolean('bluetooth', 'bluetooth_server') 695 | notification_timeout_milliseconds = config_parser.getint('notification', 'notification_timeout') * 1000 696 | if notification_timeout_milliseconds < 0: 697 | notification_timeout_milliseconds = 0 698 | list_size_duplicates = config_parser.getint('notification', 'list_size_duplicates') 699 | if list_size_duplicates < 0: 700 | list_size_duplicates = 0 701 | elif list_size_duplicates > 50: 702 | list_size_duplicates = 50 703 | Notification.latest_notifications = deque(maxlen=list_size_duplicates) 704 | ignore_duplicates_list_for_titles = config_parser.get('notification', 'ignore_duplicates_list_for_titles') 705 | Notification.titles_that_ignore_latest = [title.strip() for title in ignore_duplicates_list_for_titles.split(',')] 706 | 707 | keywords_to_ignore = config_parser.get('notification', 'keywords_to_ignore') 708 | Notification.keywords_to_ignore = [kw.strip() for kw in keywords_to_ignore.split(',')] 709 | 710 | regexes_to_ignore_in_title = config_parser.get('notification', 'regexes_to_ignore_in_title') 711 | Notification.regexes_to_ignore_in_title = [re.compile(kw.strip()) for kw in regexes_to_ignore_in_title.split(',')] if regexes_to_ignore_in_title else [] 712 | 713 | regexes_to_ignore_in_content = config_parser.get('notification', 'regexes_to_ignore_in_content') 714 | Notification.regexes_to_ignore_in_content = [re.compile(kw.strip()) for kw in regexes_to_ignore_in_content.split(',')] if regexes_to_ignore_in_content else [] 715 | 716 | 717 | try: 718 | bluetooth_support_kitkat = config_parser.getboolean('bluetooth', 'bluetooth_support_kitkat') 719 | except (configparser.Error, ValueError): 720 | bluetooth_support_kitkat = False 721 | logging.info('Cound not find setting "bluetooth_support_kitkat" in your config file') 722 | logging.info('This is a new setting that has been added') 723 | logging.info('For now I will keep an2linux running and set this setting to off') 724 | logging.info('If you do not wan\'t to see these messages or you want to enable this setting') 725 | logging.info('Then turn off an2linux and rename or delete your current config file') 726 | logging.info('Located at: "{}"'.format(CONF_FILE_PATH)) 727 | logging.info('Then start an2linux again to generate a new config file including this setting') 728 | return tcp_server_enabled, tcp_port_number,\ 729 | bluetooth_server_enabled, bluetooth_support_kitkat, notification_timeout_milliseconds 730 | except (configparser.Error, ValueError) as e: 731 | logging.error('Corrupted configuration file: {}'.format(e)) 732 | try: 733 | os.rename(CONF_FILE_PATH, CONF_FILE_PATH + ".corrupted") 734 | logging.error('Your corrupted configuration file has been saved to "{}"' 735 | .format(CONF_FILE_PATH + '.corrupted')) 736 | except Exception: 737 | pass 738 | create_default_config_file_and_exit() 739 | 740 | 741 | def cleanup(signum, frame): 742 | Notify.uninit() 743 | if tcp_server_enabled: 744 | tcp_server.shutdown() 745 | if TCPHandler.active_pairing_connection: 746 | TCPHandler.cancel_pairing = True 747 | 748 | if bluetooth_server_enabled: 749 | bluetooth_server.shutdown() 750 | if BluetoothHandler.active_pairing_connection: 751 | BluetoothHandler.cancel_pairing = True 752 | 753 | sys.exit() 754 | 755 | 756 | def init(): 757 | if os.environ.get('XDG_CONFIG_HOME') is None or os.environ.get('XDG_CONFIG_HOME') == '': 758 | XDG_CONFIG_HOME = os.path.join(os.path.expanduser('~'), '.config') 759 | else: 760 | XDG_CONFIG_HOME = os.environ.get('XDG_CONFIG_HOME') 761 | 762 | CONF_DIR_PATH = os.path.join(XDG_CONFIG_HOME, 'an2linux') 763 | CONF_FILE_PATH = os.path.join(CONF_DIR_PATH, 'config') 764 | 765 | CERTIFICATE_PATH = os.path.join(CONF_DIR_PATH, 'certificate.pem') 766 | RSA_PRIVATE_KEY_PATH = os.path.join(CONF_DIR_PATH, 'rsakey.pem') 767 | AUTHORIZED_CERTS_PATH = os.path.join(CONF_DIR_PATH, 'authorized_certs') 768 | DHPARAM_PATH = os.path.join(CONF_DIR_PATH, 'dhparam.pem') 769 | 770 | if not os.path.exists(CONF_DIR_PATH): 771 | os.makedirs(CONF_DIR_PATH) 772 | 773 | if not os.path.isfile(CERTIFICATE_PATH) or not os.path.isfile(RSA_PRIVATE_KEY_PATH): 774 | generate_server_private_key_and_certificate(CERTIFICATE_PATH, RSA_PRIVATE_KEY_PATH) 775 | else: 776 | # test if valid private key / certificate 777 | try: 778 | ssl.SSLContext(protocol=ssl.PROTOCOL_TLSv1_2).load_cert_chain(CERTIFICATE_PATH, 779 | RSA_PRIVATE_KEY_PATH) 780 | ssl.PEM_cert_to_DER_cert(open(CERTIFICATE_PATH, 'r').read()) 781 | except (ssl.SSLError, ValueError) as e: 782 | logging.error('Something went wrong trying to load your private key and certificate: {}'.format(e)) 783 | logging.error('Will generate new key overwriting old key and certificate') 784 | generate_server_private_key_and_certificate(CERTIFICATE_PATH, RSA_PRIVATE_KEY_PATH) 785 | 786 | return CONF_FILE_PATH, CERTIFICATE_PATH, RSA_PRIVATE_KEY_PATH, AUTHORIZED_CERTS_PATH, DHPARAM_PATH 787 | 788 | 789 | def configure_logging(): 790 | log_folder = os.path.join(os.environ.get('XDG_CACHE_HOME', os.path.expanduser('~/.cache')), 'an2linux') 791 | if not os.path.exists(log_folder): 792 | os.makedirs(log_folder, exist_ok=True) 793 | log_filename = 'an2linux_{0}.log'.format(datetime.datetime.now().strftime('%Y%m%d_%Hh%Mm%Ss')) 794 | log_filepath = os.path.join(log_folder, log_filename) 795 | 796 | # an2linux currently prints to stdout - we will keep this behaviour for now 797 | logging.basicConfig( 798 | level=logging.INFO, 799 | format='%(asctime)s.%(msecs).03d %(name)-12s %(levelname)-8s %(message)s (%(filename)s:%(lineno)d)', 800 | datefmt='%Y-%m-%d %H:%M:%S', 801 | handlers=[ 802 | logging.FileHandler(log_filepath), 803 | logging.StreamHandler(sys.stdout), 804 | ] 805 | ) 806 | 807 | 808 | if __name__ == '__main__': 809 | configure_logging() 810 | 811 | CONF_FILE_PATH, CERTIFICATE_PATH, RSA_PRIVATE_KEY_PATH, AUTHORIZED_CERTS_PATH, DHPARAM_PATH = init() 812 | 813 | tcp_server_enabled, tcp_port_number, bluetooth_server_enabled, bluetooth_support_kitkat,\ 814 | notification_timeout_milliseconds = parse_config_or_create_new() 815 | 816 | if not tcp_server_enabled and not bluetooth_server_enabled: 817 | logging.error('Neither TCP nor Bluetooth is enabled in your config file at {}'.format(CONF_FILE_PATH)) 818 | sys.exit() 819 | 820 | # initialize libnotify 821 | Notify.init('AN2Linux') 822 | 823 | SERVER_CERT_DER = ssl.PEM_cert_to_DER_cert(open(CERTIFICATE_PATH, 'r').read()) 824 | sha256 = hashlib.sha256(SERVER_CERT_DER).hexdigest().upper() 825 | sha256_format = [sha256[x:x + 2] for x in range(0, len(sha256), 2)] 826 | logging.info('Server certificate fingerprint: {}'.format(' '.join(sha256_format))) 827 | 828 | PAIR_REQUEST = b'\x00' 829 | NOTIF_CONN = b'\x01' 830 | DENY_PAIRING = b'\x02' 831 | ACCEPT_PAIRING = b'\x03' 832 | FLAG_INCLUDE_TITLE = 1 833 | FLAG_INCLUDE_MESSAGE = 2 834 | FLAG_INCLUDE_ICON = 4 835 | 836 | notif_tls_ctx = ssl.SSLContext(protocol=ssl.PROTOCOL_TLSv1_2) 837 | notif_tls_ctx.load_cert_chain(CERTIFICATE_PATH, RSA_PRIVATE_KEY_PATH) 838 | notif_tls_ctx.set_ciphers('ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA') 839 | notif_tls_ctx.set_ecdh_curve('prime256v1') 840 | notif_tls_ctx.options |= ssl.OP_SINGLE_ECDH_USE 841 | notif_tls_ctx.verify_mode = ssl.CERT_REQUIRED 842 | 843 | if tcp_server_enabled: 844 | try: 845 | # test if ipv4/ipv6 dual stacking is supported, otherwise use ipv4 846 | tcp_server = ThreadingDualStackServer(('', tcp_port_number), TCPHandler) 847 | except Exception: 848 | logging.error('(TCP) Failed to use IPv4/IPv6 dual stacking, fallbacks to IPv4 only') 849 | tcp_server = socketserver.ThreadingTCPServer(('', tcp_port_number), TCPHandler) 850 | logging.info('(TCP) Waiting for connections on port {}'.format(tcp_port_number)) 851 | threading.Thread(target=tcp_server.serve_forever).start() 852 | 853 | if bluetooth_server_enabled: 854 | try: 855 | from bluetooth import * 856 | if bluetooth_support_kitkat: 857 | if not os.path.isfile(DHPARAM_PATH): 858 | generate_dhparam() 859 | else: 860 | try: 861 | # try if valid dh parameters 862 | ssl.SSLContext(protocol=ssl.PROTOCOL_TLSv1_2).load_dh_params(DHPARAM_PATH) 863 | except Exception as e: 864 | logging.error('Something went wrong trying to load your DH parameters: {}'.format(e)) 865 | logging.error('Will generate new parameters overwriting old parameters') 866 | generate_dhparam() 867 | notif_tls_ctx_kitkat_bt = ssl.SSLContext(protocol=ssl.PROTOCOL_TLSv1) 868 | notif_tls_ctx_kitkat_bt.load_cert_chain(CERTIFICATE_PATH, RSA_PRIVATE_KEY_PATH) 869 | notif_tls_ctx_kitkat_bt.set_ciphers('DHE-RSA-AES256-SHA') 870 | notif_tls_ctx_kitkat_bt.load_dh_params(DHPARAM_PATH) 871 | notif_tls_ctx_kitkat_bt.options |= ssl.OP_SINGLE_DH_USE 872 | notif_tls_ctx_kitkat_bt.verify_mode = ssl.CERT_REQUIRED 873 | 874 | bluetooth_server = ThreadingBluetoothServer() 875 | logging.info('(Bluetooth) Waiting for connections on RFCOMM channel {}' 876 | .format(bluetooth_server.port)) 877 | threading.Thread(target=bluetooth_server.serve_forever).start() 878 | except ImportError as e: 879 | bluetooth_server_enabled = False 880 | logging.error('Dependency missing: python-bluez') 881 | 882 | signal.signal(signal.SIGHUP, cleanup) 883 | signal.signal(signal.SIGINT, cleanup) 884 | signal.signal(signal.SIGQUIT, cleanup) 885 | signal.signal(signal.SIGTERM, cleanup) 886 | 887 | signal.pause() 888 | -------------------------------------------------------------------------------- /init/README.md: -------------------------------------------------------------------------------- 1 | # Init/Service scripts 2 | This folder contains init/service scripts for AN2Linux. 3 | -------------------------------------------------------------------------------- /init/systemd-system/README.md: -------------------------------------------------------------------------------- 1 | # Systemd system unit 2 | ### I use archlinux and this service unit works for me 3 | 4 | #### Tips if it does not work for you 5 | - `ReadWritePaths` may be named `ReadWriteDirectories` in systemd < 231 6 | 7 | - The `DBUS_SESSION_BUS_ADDRESS` environment variable may be different for you, 8 | and maybe even different every reboot 9 | 10 | ##### For bluetooth I've tried 11 | 12 | ``` 13 | Wants=bluetooth.service 14 | After=bluetooth.service 15 | 16 | Also with Requires= instead of Wants= and with bluetooth.target instead 17 | of .service 18 | ``` 19 | 20 | That worked 50% of the time, the other 50% it resulted in: 21 | `bluetooth.btcommon.BluetoothError: (2, 'No such file or directory')` 22 | 23 | With `systemctl status an2linux.service bluetooth.service` 24 | I could see that even with `After=` etc an2linux.service still started one 25 | second before bluetooth.service. 26 | 27 | Some systemd expert may know what I'm doing wrong. 28 | 29 | A workaround that worked for me was `ExecStartPre=/usr/bin/sleep 3`. 30 | 31 | So this problem is only with this system-wide systemd unit if using bluetooth. 32 | 33 | ## Instructions: 34 | 1. Change `User=` and `Group=` 35 | 36 | 2. Change `ExecStart=` 37 | 38 | 3. Uncomment `Wants=`, `After=` and `ExecStartPre=` if you want to use workaround for bluetoth 39 | 40 | 4. Put *an2linux.service* here: 41 | `/etc/systemd/system/an2linux.service` 42 | 43 | 5. Run `systemctl daemon-reload` 44 | 45 | #### Start: 46 | `systemctl start an2linux.service` 47 | 48 | #### Stop: 49 | `systemctl stop an2linux.service` 50 | 51 | #### Autostart: 52 | `systemctl enable an2linux.service` 53 | 54 | #### Status: 55 | `systemctl status an2linux.service` 56 | -------------------------------------------------------------------------------- /init/systemd-system/an2linux.service: -------------------------------------------------------------------------------- 1 | [Unit] 2 | Description=AN2Linux 3 | #Wants=bluetooth.service 4 | #After=bluetooth.service 5 | 6 | [Service] 7 | Type=simple 8 | User= 9 | Group= 10 | StandardOutput=null 11 | Restart=on-failure 12 | #ExecStartPre=/usr/bin/sleep 3 13 | ExecStart= 14 | Environment=DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus 15 | PrivateDevices=true 16 | ProtectHome=read-only 17 | ProtectSystem=strict 18 | ReadWritePaths=/tmp 19 | 20 | [Install] 21 | WantedBy=default.target 22 | -------------------------------------------------------------------------------- /init/systemd-user/README.md: -------------------------------------------------------------------------------- 1 | # Systemd user unit 2 | ### I use archlinux and this service unit works for me 3 | 4 | #### Tips if it does not work for you 5 | - You may need to: 6 | `loginctl enable-linger ` 7 | 8 | - Info about systemd/user: https://wiki.archlinux.org/index.php/Systemd/User 9 | 10 | 11 | #### Instructions: 12 | 1. Change `ExecStart=` 13 | 14 | 2. Put *an2linux.service* here: 15 | `~/.config/systemd/user/an2linux.service` 16 | 17 | 2. Run `systemctl --user daemon-reload` 18 | 19 | #### Start: 20 | `systemctl --user start an2linux.service` 21 | 22 | #### Stop: 23 | `systemctl --user stop an2linux.service` 24 | 25 | #### Autostart: 26 | `systemctl --user enable an2linux.service` 27 | 28 | #### Status: 29 | `systemctl --user status an2linux.service` 30 | -------------------------------------------------------------------------------- /init/systemd-user/an2linux.service: -------------------------------------------------------------------------------- 1 | [Unit] 2 | Description=AN2Linux 3 | 4 | [Service] 5 | Type=simple 6 | StandardOutput=null 7 | Restart=on-failure 8 | ExecStart= 9 | 10 | [Install] 11 | WantedBy=default.target 12 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | pygobject 2 | 3 | --------------------------------------------------------------------------------