| #!/usr/bin/ruby |
| |
| # password store management tool |
| |
| # Copyright (c) 2008, 2009, 2011, 2013 Peter Palfrader <peter@palfrader.org> |
| # Copyright (c) 2014 Fastly |
| # |
| # Permission is hereby granted, free of charge, to any person obtaining |
| # a copy of this software and associated documentation files (the |
| # "Software"), to deal in the Software without restriction, including |
| # without limitation the rights to use, copy, modify, merge, publish, |
| # distribute, sublicense, and/or sell copies of the Software, and to |
| # permit persons to whom the Software is furnished to do so, subject to |
| # the following conditions: |
| # |
| # The above copyright notice and this permission notice shall be |
| # included in all copies or substantial portions of the Software. |
| # |
| # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| |
| require 'optparse' |
| require 'thread' |
| require 'tempfile' |
| |
| require 'yaml' |
| Thread.abort_on_exception = true |
| |
| GNUPG = "gpg" |
| GROUP_PATTERN = "@[a-zA-Z0-9_-]+" |
| USER_PATTERN = "[a-zA-Z0-9:_-]+" |
| $program_name = File.basename($0, '.*') |
| CONFIG_FILE = ENV['HOME']+ "/.pws.yaml" |
| |
| $editor = ENV['EDITOR'] |
| if $editor == nil |
| %w{/usr/bin/sensible-editor /usr/bin/editor /usr/bin/vi}.each do |editor| |
| if FileTest.executable?(editor) |
| $editor = editor |
| break |
| end |
| end |
| end |
| if $editor == nil |
| STDERR.puts "Cannot find an editor" |
| exit(1) |
| end |
| |
| class GnuPG |
| @@my_keys = nil |
| @@my_fprs = nil |
| @@keyid_fpr_mapping = {} |
| @@extra_args = [] |
| |
| def GnuPG.extra_args=(val) |
| @@extra_args = val |
| end |
| |
| def GnuPG.readwrite3(intxt, infd, stdoutfd, stderrfd, statusfd=nil) |
| outtxt, stderrtxt, statustxt = '' |
| thread_in = Thread.new { |
| infd.print intxt |
| infd.close |
| } |
| thread_out = Thread.new { |
| outtxt = stdoutfd.read |
| stdoutfd.close |
| } |
| thread_err = Thread.new { |
| errtxt = stderrfd.read |
| stderrfd.close |
| } |
| thread_status = Thread.new { |
| statustxt = statusfd.read |
| statusfd.close |
| } if (statusfd) |
| |
| thread_in.join |
| thread_out.join |
| thread_err.join |
| thread_status.join if thread_status |
| |
| return outtxt, stderrtxt, statustxt |
| end |
| |
| def GnuPG.open3call(cmd, intxt, args, require_success = false, do_status=true) |
| inR, inW = IO.pipe |
| outR, outW = IO.pipe |
| errR, errW = IO.pipe |
| statR, statW = IO.pipe if do_status |
| |
| pid = Kernel.fork do |
| inW.close |
| outR.close |
| errR.close |
| statR.close if do_status |
| STDIN.reopen(inR) |
| STDOUT.reopen(outW) |
| STDERR.reopen(errW) |
| fds = { |
| STDIN=>inR, |
| STDOUT=>outW, |
| STDERR=>errW, |
| } |
| begin |
| if do_status |
| fds[statW.fileno] = statW |
| exec(cmd, "--status-fd=#{statW.fileno}", *(@@extra_args + args), fds) |
| else |
| exec(cmd, *(@@extra_args + args), fds) |
| end |
| rescue Exception => e |
| outW.puts("[PWSEXECERROR]: #{e}") |
| exit(1) |
| end |
| raise ("Calling gnupg failed") |
| end |
| inR.close |
| outW.close |
| errW.close |
| if do_status |
| statW.close |
| (outtxt, stderrtxt, statustxt) = readwrite3(intxt, inW, outR, errR, statR); |
| else |
| (outtxt, stderrtxt) = readwrite3(intxt, inW, outR, errR); |
| end |
| wpid, status = Process.waitpid2 pid |
| throw "Unexpected pid: #{pid} vs #{wpid}" unless pid == wpid |
| throw "Process has not exited!?" unless status.exited? |
| if (require_success and status.exitstatus != 0) |
| STDERR.puts "#{cmd} call did not exit sucessfully." |
| STDERR.puts "output on stdout:" |
| STDERR.puts outtxt |
| STDERR.puts "output on stderr:" |
| STDERR.puts stderrtxt |
| if do_status |
| STDERR.puts "output on statusfd:" |
| STDERR.puts statustxt |
| end |
| exit(1) |
| end |
| if m=/^\[PWSEXECERROR\]: (.*)/.match(outtxt) then |
| STDERR.puts "Could not run GnuPG: #{m[1]}" |
| exit(1) |
| end |
| if do_status |
| return outtxt, stderrtxt, statustxt, status.exitstatus |
| else |
| return outtxt, stderrtxt, status.exitstatus |
| end |
| end |
| |
| def GnuPG.gpgcall(intxt, args, require_success = false) |
| return open3call(GNUPG, intxt, args, require_success) |
| end |
| |
| def GnuPG.init_keys() |
| return if @@my_keys |
| (outtxt, stderrtxt, statustxt) = GnuPG.gpgcall('', %w{--fast-list-mode --with-colons --with-fingerprint --list-secret-keys}, true) |
| @@my_keys = [] |
| @@my_fprs = [] |
| outtxt.split("\n").each do |line| |
| parts = line.split(':') |
| if (parts[0] == "ssb" or parts[0] == "sec") |
| @@my_keys.push parts[4] |
| elsif (parts[0] == "fpr") |
| @@my_fprs.push parts[9] |
| end |
| end |
| end |
| # This is for my private keys, so we can tell if a file is encrypted to us |
| def GnuPG.get_my_keys() |
| init_keys |
| @@my_keys |
| end |
| # And this is for my private keys also, so we can tell if we are encrypting to ourselves |
| def GnuPG.get_my_fprs() |
| init_keys |
| @@my_fprs |
| end |
| |
| # This maps public keyids to fingerprints, so we can figure |
| # out if a file that is encrypted to a bunch of keys is |
| # encrypted to the fingerprints it should be encrypted to |
| def GnuPG.get_fpr_from_keyid(keyid) |
| fpr = @@keyid_fpr_mapping[keyid] |
| # this can be null, if we tried to find the fpr but failed to find the key in our keyring |
| unless fpr |
| STDERR.puts "Warning: No key found for keyid #{keyid}" |
| end |
| return fpr |
| end |
| def GnuPG.get_fprs_from_keyids(keyids) |
| learn_fingerprints_from_keyids(keyids) |
| return keyids.collect{ |k| get_fpr_from_keyid(k) or "unknown" } |
| end |
| |
| # this is to load the keys we will soon be asking about into |
| # our keyid-fpr-mapping hash |
| def GnuPG.learn_fingerprints_from_keyids(keyids) |
| need_to_learn = keyids.reject{ |k| @@keyid_fpr_mapping.has_key?(k) } |
| if need_to_learn.size > 0 |
| # we can't use --fast-list-mode here because GnuPG is broken |
| # and does not show elmo's fingerprint in a call like |
| # gpg --with-colons --fast-list-mode --with-fingerprint --list-key D7C3F131AB2A91F5 |
| args = %w{--with-colons --with-fingerprint --list-keys} |
| args.push("--keyring=./.keyring", "--no-default-keyring") if FileTest.exists?(".keyring") |
| args.concat need_to_learn |
| (outtxt, stderrtxt, statustxt) = GnuPG.gpgcall('', args) |
| |
| pub = nil |
| fpr = nil |
| outtxt.split("\n").each do |line| |
| parts = line.split(':') |
| if (parts[0] == "pub") |
| pub = parts[4] |
| fpr = nil |
| elsif (parts[0] == "fpr") and fpr.nil? |
| fpr = parts[9] |
| @@keyid_fpr_mapping[pub] = fpr |
| elsif (parts[0] == "sub") |
| @@keyid_fpr_mapping[parts[4]] = fpr |
| end |
| end |
| end |
| need_to_learn.reject{ |k| @@keyid_fpr_mapping.has_key?(k) }.each { |k| @@keyid_fpr_mapping[k] = nil } |
| end |
| end |
| |
| def read_input(query, default_yes=true) |
| if default_yes |
| append = '[Y/n]' |
| else |
| append = '[y/N]' |
| end |
| |
| while true |
| print "#{query} #{append} " |
| begin |
| i = STDIN.readline.chomp.downcase |
| rescue EOFError |
| return default_yes |
| end |
| if i=="" |
| return default_yes |
| elsif i=="y" |
| return true |
| elsif i=="n" |
| return false |
| end |
| end |
| end |
| |
| class GroupConfig |
| attr_reader :dirname |
| |
| def initialize(dirname=".", trusted_users=nil) |
| @dirname = dirname |
| if trusted_users |
| @trusted_users_source = trusted_users |
| load_deprecated_trusted_users() |
| elsif FileTest.exists?(CONFIG_FILE) |
| t = {} |
| begin |
| yaml = YAML::load_file(CONFIG_FILE) |
| yaml["trusted_users"].each do |k,v| |
| t[File.expand_path(k)] = v |
| end |
| @trusted_users_source = CONFIG_FILE |
| d = File.expand_path(dirname) |
| while d != "/" |
| if t.include?(d) |
| @trusted_users = t[d] |
| @dirname = d |
| break |
| end |
| d = File.split(d)[0] |
| end |
| if @trusted_users.nil? or d == "/" |
| raise ("Could not find #{File.expand_path(dirname)} or its parents in configuration file #{CONFIG_FILE}") |
| end |
| rescue Psych::SyntaxError, ArgumentError => e |
| raise("Could not parse YAML: #{e.message}") |
| end |
| else |
| @trusted_users_source = ENV['HOME']+'/.pws-trusted-users' |
| load_deprecated_trusted_users() |
| end |
| parse_file |
| expand_groups |
| end |
| |
| def load_deprecated_trusted_users() |
| begin |
| f = File.open(@trusted_users_source) |
| rescue Exception => e |
| raise e |
| end |
| |
| trusted = [] |
| f.readlines.each do |line| |
| line.chomp! |
| next if line =~ /^$/ |
| next if line =~ /^#/ |
| |
| trusted.push line |
| end |
| @trusted_users = trusted |
| end |
| |
| def verify(content) |
| args = [] |
| args.push "--keyring=#{@dirname}/.keyring" if FileTest.exists?(File.join(@dirname, ".keyring")) |
| (outtxt, stderrtxt, statustxt, exitstatus) = GnuPG.gpgcall(content, args) |
| goodsig = false |
| validsig = nil |
| statustxt.split("\n").each do |line| |
| if m = /^\[GNUPG:\] GOODSIG/.match(line) |
| goodsig = true |
| elsif m = /^\[GNUPG:\] VALIDSIG \S+ \S+ \S+ \S+ \S+ \S+ \S+ \S+ \S+ ([0-9A-F]+)/.match(line) |
| validsig = m[1] |
| end |
| end |
| |
| if not goodsig |
| STDERR.puts ".users file is not signed properly. GnuPG said on stdout:" |
| STDERR.puts outtxt |
| STDERR.puts "and on stderr:" |
| STDERR.puts stderrtxt |
| STDERR.puts "and via statusfd:" |
| STDERR.puts statustxt |
| raise "Not goodsig" |
| end |
| |
| if not @trusted_users.include?(validsig) |
| raise ".users file is signed by #{validsig} which is not in #{@trusted_users_source}" |
| end |
| |
| if not exitstatus==0 |
| raise "gpg verify failed for .users file" |
| end |
| |
| return outtxt |
| end |
| |
| def parse_file |
| begin |
| f = File.open(File.join(@dirname, '.users')) |
| rescue Exception => e |
| raise e |
| end |
| |
| users = f.read |
| f.close |
| |
| users = verify(users) |
| |
| @users = {} |
| @groups = {} |
| |
| lno = 0 |
| users.split("\n").each do |line| |
| lno = lno+1 |
| next if line =~ /^$/ |
| next if line =~ /^#/ |
| if (m = /^(#{USER_PATTERN})\s*=\s*([0-9A-Fa-f]{40})\s*$/.match line) |
| user = m[1] |
| fpr = m[2] |
| if @users.has_key?(user) |
| STDERR.puts "User #{user} redefined at line #{lno}!" |
| exit(1) |
| end |
| @users[user] = fpr |
| elsif (m = /^(#{GROUP_PATTERN})\s*=\s*(.*)$/.match line) |
| group = m[1] |
| members = m[2].strip |
| if @groups.has_key?(group) |
| STDERR.puts "Group #{group} redefined at line #{lno}!" |
| exit(1) |
| end |
| members = members.split(/[\t ,]+/) |
| @groups[group] = { "members" => members } |
| end |
| end |
| end |
| |
| def is_group(name) |
| return (name =~ /^@/) |
| end |
| def check_exists(x, whence, fatal=true) |
| ok=true |
| if is_group(x) |
| ok=false unless (@groups.has_key?(x)) |
| else |
| ok=false unless @users.has_key?(x) |
| end |
| unless ok |
| STDERR.puts( (fatal ? "Error: " : "Warning: ") + "#{whence} contains unknown member #{x}") |
| exit(1) if fatal |
| end |
| return ok |
| end |
| def expand_groups |
| @groups.each_pair do |groupname, group| |
| group['members'].each do |member| |
| check_exists(member, "Group #{groupname}") |
| end |
| group['members_to_do'] = group['members'].clone |
| end |
| |
| while true |
| had_progress = false |
| all_expanded = true |
| @groups.each_pair do |groupname, group| |
| group['keys'] = [] unless group['keys'] |
| |
| still_contains_groups = false |
| group['members_to_do'].clone.each do |member| |
| if is_group(member) |
| if @groups[member]['members_to_do'].size == 0 |
| group['keys'].concat @groups[member]['keys'] |
| group['members_to_do'].delete(member) |
| had_progress = true |
| else |
| still_contains_groups = true |
| end |
| else |
| group['keys'].push @users[member] |
| group['members_to_do'].delete(member) |
| had_progress = true |
| end |
| end |
| all_expanded = false if still_contains_groups |
| end |
| break if all_expanded |
| unless had_progress |
| cyclic_groups = @groups.keys.reject{|name| @groups[name]['members_to_do'].size == 0}.join(", ") |
| STDERR.puts "Cyclic group memberships in #{cyclic_groups}?" |
| exit(1) |
| end |
| end |
| end |
| |
| def expand_targets(targets) |
| fprs = [] |
| ok = true |
| targets.each do |t| |
| unless check_exists(t, "access line", false) |
| ok = false |
| next |
| end |
| if is_group(t) |
| fprs.concat @groups[t]['keys'] |
| else |
| fprs.push @users[t] |
| end |
| end |
| return ok, fprs.uniq |
| end |
| |
| def get_users() |
| return @users |
| end |
| end |
| |
| class EncryptedData |
| attr_reader :accessible, :encrypted, :readable, :readers |
| |
| def EncryptedData.determine_readable(readers) |
| GnuPG.get_my_keys.each do |keyid| |
| return true if readers.include?(keyid) |
| end |
| return false |
| end |
| |
| def EncryptedData.list_readers(statustxt) |
| readers = [] |
| statustxt.split("\n").each do |line| |
| m = /^\[GNUPG:\] ENC_TO ([0-9A-F]+)/.match line |
| next unless m |
| readers.push m[1] |
| end |
| return readers |
| end |
| |
| def EncryptedData.targets(text) |
| text.split("\n").each do |line| |
| if /^(#|---)/.match line |
| next |
| end |
| m = /^access: "?((?:(?:#{GROUP_PATTERN}|#{USER_PATTERN}),?\s*)+)"?/.match line |
| return [] unless m |
| return m[1].strip.split(/[\t ,]+/) |
| end |
| end |
| |
| |
| def initialize(encrypted_content, label, keyring_directory = ".", ignore_decrypt_errors = false) |
| @ignore_decrypt_errors = ignore_decrypt_errors |
| @label = label |
| @keyring_dir = keyring_directory |
| |
| @encrypted_content = encrypted_content |
| (outtxt, stderrtxt, statustxt) = GnuPG.gpgcall(@encrypted_content, %w{--with-colons --no-options --no-default-keyring --secret-keyring=/dev/null --keyring=/dev/null}) |
| @encrypted = !(statustxt =~ /\[GNUPG:\] NODATA/) |
| if @encrypted |
| @readers = EncryptedData.list_readers(statustxt) |
| @readable = EncryptedData.determine_readable(@readers) |
| end |
| end |
| |
| def decrypt |
| (outtxt, stderrtxt, statustxt, exitstatus) = GnuPG.gpgcall(@encrypted_content, %w{--decrypt}) |
| if !@ignore_decrypt_errors and exitstatus != 0 |
| proceed = read_input("Warning: gpg returned non-zero exit status #{exitstatus} when decrypting #{@label}. Proceed?", false) |
| exit(0) unless proceed |
| elsif !@ignore_decrypt_errors and outtxt.length == 0 |
| proceed = read_input("Warning: #{@label} decrypted to an empty file. Proceed?") |
| exit(0) unless proceed |
| end |
| |
| return outtxt |
| end |
| |
| def encrypt(content, recipients) |
| args = recipients.collect{ |r| "--recipient=#{r}"} |
| args.push "--trust-model=always" |
| args.push("--keyring=#{@keyring_dir}/.keyring", "--no-default-keyring") if FileTest.exists?("#{@keyring_dir}/.keyring") |
| args.push "--armor" |
| args.push "--encrypt" |
| (outtxt, stderrtxt, statustxt, exitstatus) = GnuPG.gpgcall(content, args) |
| |
| invalid = [] |
| statustxt.split("\n").each do |line| |
| m = /^\[GNUPG:\] INV_RECP \S+ ([0-9A-F]+)/.match line |
| next unless m |
| invalid.push m[1] |
| end |
| if invalid.size > 0 |
| again = read_input("Warning: the following recipients are invalid: #{invalid.join(", ")}. Try again (or proceed)?") |
| return false if again |
| end |
| if outtxt.length == 0 |
| tryagain = read_input("Error: #{@label} encrypted to an empty file. Edit again (or exit)?") |
| return false if tryagain |
| exit(0) |
| end |
| if exitstatus != 0 |
| proceed = read_input("Warning: gpg returned non-zero exit status #{exitstatus} when encrypting #{@label}. Said:\n#{stderrtxt}\n#{statustxt}\n\nProceed (or try again)?") |
| return false unless proceed |
| end |
| |
| return true, outtxt |
| end |
| |
| |
| def determine_encryption_targets(content) |
| targets = EncryptedData.targets(content) |
| if targets.size == 0 |
| tryagain = read_input("Warning: Did not find targets to encrypt to in header. Try again (or exit)?", true) |
| return false if tryagain |
| exit(0) |
| end |
| |
| ok, expanded = @groupconfig.expand_targets(targets) |
| if (expanded.size == 0) |
| tryagain = read_input("Errors in access header. Edit again (or exit)?", true) |
| return false if tryagain |
| exit(0) |
| elsif (not ok) |
| tryagain = read_input("Warnings in access header. Edit again (or continue)?", true) |
| return false if tryagain |
| end |
| |
| to_me = false |
| GnuPG.get_my_fprs.each do |fpr| |
| if expanded.include?(fpr) |
| to_me = true |
| break |
| end |
| end |
| unless to_me |
| tryagain = read_input("File is not being encrypted to you. Edit again (or continue)?", true) |
| return false if tryagain |
| end |
| |
| return true, expanded |
| end |
| |
| end |
| |
| class EncryptedFile < EncryptedData |
| def initialize(filename, new=false, trusted_file=nil) |
| @groupconfig = GroupConfig.new(dirname=File.dirname(filename), trusted_users=trusted_file) |
| @new = new |
| if @new |
| @readers = [] |
| end |
| |
| @filename = filename |
| @accessible = FileTest.readable?(filename) |
| @filename = filename |
| |
| if @accessible |
| encrypted_content = File.read(filename) |
| else |
| encrypted_content = nil |
| end |
| super(encrypted_content, filename, @groupconfig.dirname, @new) |
| end |
| |
| def write_back(content, targets) |
| ok, encrypted = encrypt(content, targets) |
| return false unless ok |
| |
| File.open(@filename,"w").write(encrypted) |
| return true |
| end |
| end |
| |
| class Ls |
| def help(parser, code=0, io=STDOUT) |
| io.puts "Usage: #{$program_name} ls [<directory> ...]" |
| io.puts parser.summarize |
| io.puts "Lists the contents of the given directory/directories, or the current" |
| io.puts "directory if none is given. For each file show whether it is PGP-encrypted" |
| io.puts "file, and if yes whether we can read it." |
| exit(code) |
| end |
| |
| def ls_dir(dirname) |
| begin |
| dir = Dir.open(dirname) |
| rescue Exception => e |
| STDERR.puts e |
| return |
| end |
| puts "#{dirname}:" |
| Dir.chdir(dirname) do |
| unless FileTest.exists?(".users") |
| STDERR.puts "The .users file does not exists here. This is not a password store, is it?" |
| exit(1) |
| end |
| dir.sort.each do |filename| |
| next if (filename =~ /^\./) and not (@all >= 3) |
| stat = File::Stat.new(filename) |
| if stat.symlink? |
| puts "(sym) #{filename}" if (@all >= 2) |
| elsif stat.directory? |
| puts "(dir) #{filename}" if (@all >= 2) |
| elsif !stat.file? |
| puts "(other) #{filename}" if (@all >= 2) |
| else |
| f = EncryptedFile.new(filename) |
| if !f.accessible |
| puts "(!perm) #{filename}" |
| elsif !f.encrypted |
| puts "(file) #{filename}" if (@all >= 2) |
| elsif f.readable |
| puts "(ok) #{filename}" |
| else |
| puts "(locked) #{filename}" if (@all >= 1) |
| end |
| end |
| end |
| end |
| end |
| |
| def initialize() |
| @all = 0 |
| ARGV.options do |opts| |
| opts.on_tail("-h", "--help" , "Display this help screen") { help(opts) } |
| opts.on_tail("-a", "--all" , "Show all files (use up to 3 times to show even more than all)") { @all = @all+1 } |
| opts.parse! |
| end |
| |
| dirs = ARGV |
| dirs.push('.') unless dirs.size > 0 |
| dirs.each { |dir| ls_dir(dir) } |
| end |
| end |
| |
| class Ed |
| def help(parser, code=0, io=STDOUT) |
| io.puts "Usage: #{$program_name} ed <filename>" |
| io.puts parser.summarize |
| io.puts "Decrypts the file, spawns an editor, and encrypts it again" |
| exit(code) |
| end |
| |
| def do_edit(content) |
| oldsize = content.length |
| |
| tempfile = Tempfile.open('pws') |
| tempfile.puts content |
| tempfile.flush |
| system($editor, tempfile.path) |
| status = $? |
| throw "Process has not exited!?" unless status.exited? |
| unless status.exitstatus == 0 |
| proceed = read_input("Warning: Editor did not exit successfully (exit code #{status.exitstatus}. Proceed?") |
| exit(0) unless proceed |
| end |
| |
| # some editors do not write new content in place, but instead |
| # make a new file and more it in the old file's place. |
| begin |
| reopened = File.open(tempfile.path, "r+") |
| rescue Exception => e |
| STDERR.puts e |
| exit(1) |
| end |
| content = reopened.read |
| |
| # zero the file, well, both of them. |
| newsize = content.length |
| clearsize = (newsize > oldsize) ? newsize : oldsize |
| |
| [tempfile, reopened].each do |f| |
| f.seek(0, IO::SEEK_SET) |
| f.print "\0"*clearsize |
| f.fsync |
| end |
| reopened.close |
| tempfile.close(true) |
| |
| return content |
| end |
| |
| def edit(filename) |
| encrypted_file = EncryptedFile.new(filename, @new) |
| if !@new and !encrypted_file.readable && !@force |
| STDERR.puts "#{filename} is probably not readable" |
| exit(1) |
| end |
| |
| encrypted_to = GnuPG.get_fprs_from_keyids(encrypted_file.readers).sort |
| |
| content = encrypted_file.decrypt |
| original_content = content |
| while true |
| content = do_edit(content) |
| |
| if content.length == 0 |
| proceed = read_input("Warning: Content is now empty. Proceed?") |
| exit(0) unless proceed |
| end |
| |
| ok, targets = encrypted_file.determine_encryption_targets(content) |
| next unless ok |
| |
| if (original_content == content && ! @reencrypt_on_change) |
| if (targets.sort == encrypted_to) |
| exit(0) |
| else |
| STDERR.puts("Notice: list of keys changed -- re-encryption recommended. Run #{$program_name} rc #{filename}") |
| exit(0) |
| end |
| end |
| |
| success = encrypted_file.write_back(content, targets) |
| break if success |
| end |
| end |
| |
| def initialize(reencrypt_on_change=false) |
| ARGV.options do |opts| |
| opts.on_tail("-h", "--help" , "Display this help screen") { help(opts) } |
| opts.on_tail("-n", "--new" , "Edit new file") { |new| @new=new } |
| opts.on_tail("-f", "--force" , "Spawn an editor even if the file is probably not readable") { |force| @force=force } |
| opts.parse! |
| end |
| help(ARGV.options, 1, STDERR) if ARGV.length != 1 |
| filename = ARGV.shift |
| |
| if @new |
| if FileTest.exists?(filename) |
| STDERR.puts "#{filename} does exist" |
| exit(1) |
| end |
| else |
| if !FileTest.exists?(filename) |
| STDERR.puts "#{filename} does not exist" |
| exit(1) |
| elsif !FileTest.file?(filename) |
| STDERR.puts "#{filename} is not a regular file" |
| exit(1) |
| elsif !FileTest.readable?(filename) |
| STDERR.puts "#{filename} is not accessible (unix perms)" |
| exit(1) |
| end |
| end |
| |
| @reencrypt_on_change = reencrypt_on_change |
| |
| dirname = File.dirname(filename) |
| basename = File.basename(filename) |
| Dir.chdir(dirname) { |
| edit(basename) |
| } |
| end |
| end |
| |
| class Reencrypt < Ed |
| def help(parser, code=0, io=STDOUT) |
| io.puts "Usage: #{$program_name} rc <filename>" |
| io.puts parser.summarize |
| io.puts "Reencrypts the file" |
| exit(code) |
| end |
| def do_edit(content) |
| return content |
| end |
| def initialize() |
| super(true) |
| end |
| end |
| |
| class Get |
| def help(parser, code=0, io=STDOUT) |
| io.puts "Usage: #{$program_name} get <filename> <query>" |
| io.puts parser.summarize |
| io.puts "Decrypts the file, fetches a key and outputs it to stdout." |
| io.puts "The file must be in YAML format." |
| io.puts "query is a query, formatted like /host/users/root" |
| exit(code) |
| end |
| |
| def get(filename, what) |
| encrypted_file = EncryptedFile.new(filename, @new) |
| if !encrypted_file.readable |
| STDERR.puts "#{filename} is probably not readable" |
| exit(1) |
| end |
| |
| begin |
| yaml = YAML::load(encrypted_file.decrypt) |
| rescue Psych::SyntaxError, ArgumentError => e |
| STDERR.puts "Could not parse YAML: #{e.message}" |
| exit(1) |
| end |
| |
| require 'pp' |
| |
| a = what.split("/")[1..-1] |
| hit = yaml |
| if a.nil? |
| # q = /, so print top level keys |
| puts "Keys:" |
| hit.keys.each do |k| |
| puts "- #{k}" |
| end |
| return |
| end |
| a.each do |k| |
| hit = hit[k] |
| end |
| if hit.nil? |
| STDERR.puts("No such key or invalid lookup expression") |
| elsif hit.respond_to?(:keys) |
| puts "Keys:" |
| hit.keys.each do |k| |
| puts "- #{k}" |
| end |
| else |
| puts hit |
| end |
| end |
| |
| def initialize() |
| ARGV.options do |opts| |
| opts.on_tail("-h", "--help" , "Display this help screen") { help(opts) } |
| opts.parse! |
| end |
| help(ARGV.options, 1, STDERR) if ARGV.length != 2 |
| filename = ARGV.shift |
| what = ARGV.shift |
| |
| if !FileTest.exists?(filename) |
| STDERR.puts "#{filename} does not exist" |
| exit(1) |
| elsif !FileTest.file?(filename) |
| STDERR.puts "#{filename} is not a regular file" |
| exit(1) |
| elsif !FileTest.readable?(filename) |
| STDERR.puts "#{filename} is not accessible (unix perms)" |
| exit(1) |
| end |
| |
| dirname = File.dirname(filename) |
| basename = File.basename(filename) |
| Dir.chdir(dirname) { |
| get(basename, what) |
| } |
| end |
| end |
| |
| class KeyringUpdater |
| def help(parser, code=0, io=STDOUT) |
| io.puts "Usage: #{$program_name} update-keyring" |
| io.puts parser.summarize |
| io.puts "Updates the local .keyring file" |
| exit(code) |
| end |
| |
| def initialize() |
| ARGV.options do |opts| |
| opts.on_tail("-h", "--help" , "Display this help screen") { help(opts) } |
| opts.parse! |
| end |
| help(ARGV.options, 1, STDERR) if ARGV.length > 1 |
| |
| groupconfig = GroupConfig.new |
| users = groupconfig.get_users() |
| |
| File.open('.keyring', 'w') do |keyring| |
| users.each_pair() do |uid, keyid| |
| user_keyfile = File.join('keys', "#{uid}.key") |
| if File.file?(user_keyfile) |
| keyring.write(File.read(user_keyfile)) |
| end |
| end |
| end |
| |
| end |
| end |
| |
| class GitDiff |
| def help(parser, code=0, io=STDOUT) |
| io.puts "Usage: #{$program_name} gitdiff <commit> <file>" |
| io.puts parser.summarize |
| io.puts "Shows a diff between the version of <file> in your directory and the" |
| io.puts "version in git at <commit> (or HEAD). Requires that your tree be git" |
| io.puts "managed, obviously." |
| exit(code) |
| end |
| |
| def check_readable(e, label) |
| if !e.readable && !@force |
| STDERR.puts "#{label} is probably not readable." |
| exit(1) |
| end |
| end |
| |
| def get_file_at_commit() |
| label = @commit+':'+@filename |
| (encrypted_content, stderrtxt, exitcode) = GnuPG.open3call('git', '', ['show', label], require_success=true, do_status=false) |
| data = EncryptedData.new(encrypted_content, label) |
| check_readable(data, label) |
| return data.decrypt |
| end |
| |
| def get_file_current() |
| data = EncryptedFile.new(@filename) |
| check_readable(data, @filename) |
| return data.decrypt |
| end |
| |
| def diff() |
| old = get_file_at_commit() |
| cur = get_file_current() |
| |
| t1 = Tempfile.open('pws') |
| t1.puts old |
| t1.flush |
| |
| t2 = Tempfile.open('pws') |
| t2.puts cur |
| t2.flush |
| |
| system("diff", "-u", t1.path, t2.path) |
| |
| t1.seek(0, IO::SEEK_SET) |
| t1.print "\0"*old.length |
| t1.fsync |
| t1.close(true) |
| |
| t2.seek(0, IO::SEEK_SET) |
| t2.print "\0"*cur.length |
| t2.fsync |
| t2.close(true) |
| end |
| |
| def initialize() |
| ARGV.options do |opts| |
| opts.on_tail("-h", "--help" , "Display this help screen") { help(opts) } |
| opts.on_tail("-f", "--force" , "Do it even if the file is probably not readable") { |force| @force=force } |
| opts.parse! |
| end |
| |
| if ARGV.length == 1 |
| @commit = 'HEAD' |
| @filename = ARGV.shift |
| elsif ARGV.length == 2 |
| @commit = ARGV.shift |
| @filename = ARGV.shift |
| else |
| help(ARGV.options, 1, STDERR) |
| end |
| |
| diff() |
| end |
| end |
| |
| |
| def help(code=0, io=STDOUT) |
| io.puts "Usage: #{$program_name} ed" |
| io.puts " #{$program_name} rc" |
| io.puts " #{$program_name} ls" |
| io.puts " #{$program_name} gitdiff" |
| io.puts " #{$program_name} update-keyring" |
| io.puts " #{$program_name} help" |
| io.puts "Call #{$program_name} <command> --help for additional options/parameters" |
| exit(code) |
| end |
| |
| |
| def parse_command |
| case ARGV.shift |
| when 'ls' then Ls.new |
| when 'ed' then Ed.new |
| when 'rc' then Reencrypt.new |
| when 'gitdiff' then GitDiff.new |
| when 'get' then Get.new |
| when 'update-keyring' then KeyringUpdater.new |
| when 'help' then |
| case ARGV.length |
| when 0 then help |
| when 1 then |
| ARGV.push "--help" |
| parse_command |
| else help(1, STDERR) |
| end |
| else |
| help(1, STDERR) |
| end |
| end |
| |
| if __FILE__ == $0 |
| begin |
| parse_command |
| rescue RuntimeError => e |
| STDERR.puts e.message |
| exit(1) |
| end |
| end |
| |
| # vim:set shiftwidth=2: |
| # vim:set et: |
| # vim:set ts=2: |