diff options
Diffstat (limited to 'mac/.qutebrowser/userscripts/qute-pass')
| -rwxr-xr-x | mac/.qutebrowser/userscripts/qute-pass | 415 |
1 files changed, 415 insertions, 0 deletions
diff --git a/mac/.qutebrowser/userscripts/qute-pass b/mac/.qutebrowser/userscripts/qute-pass new file mode 100755 index 0000000..064bd88 --- /dev/null +++ b/mac/.qutebrowser/userscripts/qute-pass @@ -0,0 +1,415 @@ +#!/usr/bin/env python3 + +# SPDX-FileCopyrightText: Chris Braun (cryzed) <cryzed@googlemail.com> +# +# SPDX-License-Identifier: GPL-3.0-or-later + +""" +Insert login information using pass and a dmenu-compatible application (e.g. dmenu, rofi -dmenu, ...). A short +demonstration can be seen here: https://i.imgur.com/KN3XuZP.gif. +""" + +USAGE = """The domain of the site has to appear as a segment in the pass path, +for example: "github.com/cryzed" or "websites/github.com". Alternatively the +parameter `--unfiltered` may be used to get a list of all passwords. How the +username and password are determined is freely configurable using the CLI +arguments. As an example, if you instead store the username as part of the +secret (and use a site's name as filename), instead of the default configuration, +use `--username-target secret` and `--username-pattern "username: (.+)"`. + +The login information is inserted by emulating key events using qutebrowser's +fake-key command in this manner: [USERNAME]<Tab>[PASSWORD], which is compatible +with almost all login forms. + +If you use gopass with multiple mounts, use the CLI switch --mode gopass to switch to gopass mode. + +Suggested bindings similar to Uzbl's `formfiller` script: + + config.bind('<z><l>', 'spawn --userscript qute-pass') + config.bind('<z><u><l>', 'spawn --userscript qute-pass --username-only') + config.bind('<z><p><l>', 'spawn --userscript qute-pass --password-only') + config.bind('<z><o><l>', 'spawn --userscript qute-pass --otp-only') +""" + +EPILOG = """Dependencies: tldextract (Python 3 module), pass, pass-otp (optional). + +WARNING: The login details are viewable as plaintext in qutebrowser's debug log (qute://log) and might be shared if +you decide to submit a crash report!""" + +import argparse +import enum +import fnmatch +import functools +import os +import re +import shlex +import subprocess +import sys +import unicodedata +from urllib.parse import urlparse + +import idna +import tldextract + + +def expanded_path(path): + # Expand potential ~ in paths, since this script won't be called from a shell that does it for us + expanded = os.path.expanduser(path) + # Add trailing slash if not present + return os.path.join(expanded, "") + + +argument_parser = argparse.ArgumentParser( + description=__doc__, usage=USAGE, epilog=EPILOG +) +argument_parser.add_argument("url", nargs="?", default=os.getenv("QUTE_URL")) +argument_parser.add_argument( + "--password-store", + "-p", + default=expanded_path(os.getenv("PASSWORD_STORE_DIR", default="~/.password-store")), + help="Path to your pass password-store (only used in pass-mode)", + type=expanded_path, +) +argument_parser.add_argument( + "--mode", + "-M", + choices=["pass", "gopass"], + default="pass", + help="Select mode [gopass] to use gopass instead of the standard pass.", +) +argument_parser.add_argument( + "--prefix", + type=str, + help="Search only the given subfolder of the store (only used in gopass-mode)", +) +argument_parser.add_argument( + "--username-pattern", + "-u", + default=r".*/(.+)", + help="Regular expression that matches the username", +) +argument_parser.add_argument( + "--username-target", + "-U", + choices=["path", "secret"], + default="path", + help="The target for the username regular expression", +) +argument_parser.add_argument( + "--password-pattern", + "-P", + default=r"(.*)", + help="Regular expression that matches the password", +) +argument_parser.add_argument( + "--dmenu-invocation", + "-d", + default="dmenu", + help="Invocation used to execute a dmenu-provider", +) +argument_parser.add_argument( + "--no-insert-mode", + "-n", + dest="insert_mode", + action="store_false", + help="Don't automatically enter insert mode", +) +argument_parser.add_argument( + "--io-encoding", + "-i", + default="UTF-8", + help="Encoding used to communicate with subprocesses", +) +argument_parser.add_argument( + "--merge-candidates", + "-m", + action="store_true", + help="Merge pass candidates for fully-qualified and registered domain name", +) +argument_parser.add_argument( + "--extra-url-suffixes", + "-s", + default="", + help="Comma-separated string containing extra suffixes (e.g local)", +) +argument_parser.add_argument( + "--unfiltered", + dest="unfiltered", + action="store_true", + help="Show an unfiltered selection of all passwords in the store", +) +argument_parser.add_argument( + "--always-show-selection", + dest="always_show_selection", + action="store_true", + help="Always show selection, even if there is only a single match", +) +group = argument_parser.add_mutually_exclusive_group() +group.add_argument( + "--username-only", "-e", action="store_true", help="Only insert username" +) +group.add_argument( + "--password-only", "-w", action="store_true", help="Only insert password" +) +group.add_argument("--otp-only", "-o", action="store_true", help="Only insert OTP code") + +stderr = functools.partial(print, file=sys.stderr) + + +class ExitCodes(enum.IntEnum): + SUCCESS = 0 + FAILURE = 1 + # 1 is automatically used if Python throws an exception + NO_PASS_CANDIDATES = 2 + COULD_NOT_MATCH_USERNAME = 3 + COULD_NOT_MATCH_PASSWORD = 4 + + +class CouldNotMatchUsername(Exception): + pass + + +class CouldNotMatchPassword(Exception): + pass + + +def qute_command(command): + with open(os.environ["QUTE_FIFO"], "w") as fifo: + fifo.write(command + "\n") + fifo.flush() + + +# Encode candidate string parts as Internationalized Domain Name, doing +# Unicode normalization before. This allows to properly match (non-ASCII) +# pass entries with the corresponding domain names. +def idna_encode(name): + # Do Unicode normalization first, we use form NFKC because: + # 1. Use the compatibility normalization because these sequences have "the same meaning in some contexts" + # 2. idna.encode() below requires the Unicode strings to be in normalization form C + # See https://en.wikipedia.org/wiki/Unicode_equivalence#Normal_forms + unicode_normalized = unicodedata.normalize("NFKC", name) + # Empty strings can not be encoded, they appear for example as empty + # parts in split_path. If something like this happens, we just fall back + # to the unicode representation (which may already be ASCII then). + try: + idna_encoded = idna.encode(unicode_normalized) + except idna.IDNAError: + idna_encoded = unicode_normalized + return idna_encoded + + +def find_pass_candidates(domain, unfiltered=False): + candidates = [] + + if arguments.mode == "gopass": + gopass_args = ["gopass", "list", "--flat"] + if arguments.prefix: + gopass_args.append(arguments.prefix) + all_passwords = ( + subprocess.run(gopass_args, stdout=subprocess.PIPE) + .stdout.decode("UTF-8") + .splitlines() + ) + + for password in all_passwords: + if unfiltered or domain in password: + candidates.append(password) + else: + idna_domain = idna_encode(domain) + for path, directories, file_names in os.walk( + arguments.password_store, followlinks=True + ): + secrets = fnmatch.filter(file_names, "*.gpg") + if not secrets: + continue + + # Strip password store path prefix to get the relative pass path + pass_path = path[len(arguments.password_store) :] + split_path = pass_path.split(os.path.sep) + idna_split_path = [idna_encode(part) for part in split_path] + for secret in secrets: + secret_base = os.path.splitext(secret)[0] + idna_secret_base = idna_encode(secret_base) + if not unfiltered and idna_domain not in ( + idna_split_path + [idna_secret_base] + ): + continue + + # Append the unencoded Unicode path/name since this is how pass uses them + candidates.append(os.path.join(pass_path, secret_base)) + return candidates + + +def _run_pass(pass_arguments): + # The executable is conveniently named after it's mode [pass|gopass]. + pass_command = [arguments.mode] + env = os.environ.copy() + env["PASSWORD_STORE_DIR"] = arguments.password_store + process = subprocess.run( + pass_command + pass_arguments, env=env, stdout=subprocess.PIPE + ) + return process.stdout.decode(arguments.io_encoding).strip() + + +def pass_(path): + return _run_pass(["show", path]) + + +def pass_otp(path): + if arguments.mode == "gopass": + return _run_pass(["otp", "-o", path]) + return _run_pass(["otp", path]) + + +def dmenu(items, invocation): + command = shlex.split(invocation) + process = subprocess.run( + command, + input="\n".join(items).encode(arguments.io_encoding), + stdout=subprocess.PIPE, + ) + return process.stdout.decode(arguments.io_encoding).strip() + + +def fake_key_raw(text): + for character in text: + # Escape all characters by default, space requires special handling + sequence = '" "' if character == " " else r"\{}".format(character) + qute_command("fake-key {}".format(sequence)) + + +def extract_password(secret, pattern): + match = re.match(pattern, secret) + if not match: + raise CouldNotMatchPassword("Pattern did not match target") + try: + return match.group(1) + except IndexError: + raise CouldNotMatchPassword( + "Pattern did not contain capture group, please use capture group. Example: (.*)" + ) + + +def extract_username(target, pattern): + match = re.search(pattern, target, re.MULTILINE) + if not match: + raise CouldNotMatchUsername("Pattern did not match target") + try: + return match.group(1) + except IndexError: + raise CouldNotMatchUsername( + "Pattern did not contain capture group, please use capture group. Example: (.*)" + ) + + +def main(arguments): + if not arguments.url: + argument_parser.print_help() + return ExitCodes.FAILURE + + extractor = tldextract.TLDExtract( + extra_suffixes=arguments.extra_url_suffixes.split(",") + ) + extract_result = extractor(arguments.url) + + # Try to find candidates using targets in the following order: fully-qualified domain name (includes subdomains), + # the registered domain name, the IPv4 address if that's what the URL represents and finally the private domain + # (if a non-public suffix was used), and the URL netloc. + candidates = set() + attempted_targets = [] + + private_domain = "" + if not extract_result.suffix: + private_domain = ( + ".".join((extract_result.subdomain, extract_result.domain)) + if extract_result.subdomain + else extract_result.domain + ) + + netloc = urlparse(arguments.url).netloc + + for target in filter( + None, + [ + extract_result.fqdn, + ( + extract_result.top_domain_under_public_suffix + if hasattr(extract_result, "top_domain_under_public_suffix") + else extract_result.registered_domain + ), + extract_result.ipv4, + private_domain, + netloc, + ], + ): + attempted_targets.append(target) + target_candidates = find_pass_candidates( + target, unfiltered=arguments.unfiltered + ) + if not target_candidates: + continue + + candidates.update(target_candidates) + if not arguments.merge_candidates: + break + else: + if not candidates: + stderr( + "No pass candidates for URL {!r} found! (I tried {!r})".format( + arguments.url, attempted_targets + ) + ) + return ExitCodes.NO_PASS_CANDIDATES + + if len(candidates) == 1 and not arguments.always_show_selection: + selection = candidates.pop() + else: + selection = dmenu(sorted(candidates), arguments.dmenu_invocation) + + # Nothing was selected, simply return + if not selection: + return ExitCodes.SUCCESS + + # If username-target is path and user asked for username-only, we don't need to run pass. + # Or if using otp-only, it will run pass on its own. + secret = None + if ( + not (arguments.username_target == "path" and arguments.username_only) + and not arguments.otp_only + ): + secret = pass_(selection) + username_target = selection if arguments.username_target == "path" else secret + try: + if arguments.username_only: + fake_key_raw(extract_username(username_target, arguments.username_pattern)) + elif arguments.password_only: + fake_key_raw(extract_password(secret, arguments.password_pattern)) + elif arguments.otp_only: + otp = pass_otp(selection) + fake_key_raw(otp) + else: + # Enter username and password using fake-key and <Tab> (which seems to work almost universally), then switch + # back into insert-mode, so the form can be directly submitted by hitting enter afterwards + fake_key_raw(extract_username(username_target, arguments.username_pattern)) + qute_command("fake-key <Tab>") + fake_key_raw(extract_password(secret, arguments.password_pattern)) + except CouldNotMatchPassword as e: + stderr("Failed to match password, target: secret, error: {}".format(e)) + return ExitCodes.COULD_NOT_MATCH_PASSWORD + except CouldNotMatchUsername as e: + stderr( + "Failed to match username, target: {}, error: {}".format( + arguments.username_target, e + ) + ) + return ExitCodes.COULD_NOT_MATCH_USERNAME + + if arguments.insert_mode: + qute_command("mode-enter insert") + + return ExitCodes.SUCCESS + + +if __name__ == "__main__": + arguments = argument_parser.parse_args() + sys.exit(main(arguments)) |
