Raphaël G. Git Repositories - acme/blob - letscron

   1 #! /usr/bin/perl
   2
   3 # This program is free software: you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation, either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15 #
  16 # Copyright (C) 2016 - 2017 Raphaël Gertz <acmepl@rapsys.eu>
  17
  18 # Best practice
  19 use strict;
  20 use warnings;
  21
  22 # Fix use of acl
  23 use filetest 'access';
  24
  25 # Load dependancies
  26 use Carp qw(carp confess);
  27 use DateTime;
  28 use File::Path qw(make_path);
  29 use File::stat qw(stat);
  30 use File::Spec;
  31 use File::Slurp qw(read_file write_file);
  32 use JSON qw(decode_json);
  33 use IPC::System::Simple qw(capturex $EXITVAL);
  34 use acme qw(CERT_DIR CONFIG DS KEY_DIR SERVER_CRT SERVER_KEY);
  35
  36 # Load POSIX
  37 use POSIX qw(strftime EXIT_SUCCESS EXIT_FAILURE);
  38
  39 # Init debug
  40 my $debug = 0;
  41
  42 # Init config
  43 my $config = undef;
  44
  45 # Strip and enable debug
  46 @ARGV = map { if ($_ eq '-d') { $debug = 1; (); } else { $_; } } @ARGV;
  47
  48 # Check config file
  49 if (! -f CONFIG) {
  50         print 'Config file '.CONFIG.' do not exists'."\n";
  51         exit EXIT_FAILURE;
  52 }
  53
  54 # Load config
  55 unless (
  56         #XXX: use eval to workaround a fatal in decode_json
  57         eval {
  58                 # Read it
  59                 ($config = read_file(CONFIG)) &&
  60                 # Decode it
  61                 ($config = decode_json($config)) &&
  62                 # Check hash validity
  63                 defined($config->{certificates}) &&
  64                 # Check not empty
  65                 scalar($config->{certificates}) &&
  66                 # Check hash validity
  67                 defined($config->{thumbprint}) &&
  68                 # Check certificates array
  69                 ! scalar map {unless(defined($_->{cert}) && defined($_->{key}) && defined($_->{mail}) && defined($_->{domain}) && defined($_->{domains})) {1;} else {();}} @{$config->{certificates}}
  70         }
  71 ) {
  72         print 'Config file '.CONFIG.' is invalid'."\n";
  73         exit EXIT_FAILURE;
  74 }
  75
  76 # Deal with certificates
  77 foreach (@{$config->{certificates}}) {
  78         # Init variables
  79         my ($mtime, $dt, $suffix) = undef;
  80
  81         # Skip certificate without 60 days
  82         if (-f $_->{cert} && ($mtime = stat($_->{cert})->mtime) >= (time() - 60*24*3600)) {
  83                 next;
  84         }
  85
  86         # Extract cert directory and filename
  87         my (undef, $certDir) = File::Spec->splitpath($_->{cert});
  88
  89         # Check that certificate is writable
  90         unless (-w $certDir || -w $_->{cert}) {
  91                 carp('directory '.$certDir.' or file '.$_->{cert}.' must be writable: '.$!);
  92                 next;
  93         }
  94
  95         # Check that key directory exists
  96         if (! -d KEY_DIR) {
  97                 # Create all paths
  98                 make_path(KEY_DIR, {error => \my $err});
  99                 if (@$err) {
 100                         map {
 101                                 my ($file, $msg) = %$_;
 102                                 carp ($file eq '' ? '' : $file.': ').$msg if ($debug);
 103                         } @$err;
 104                         confess 'make_path failed';
 105                 }
 106         }
 107
 108         # Unlink if is a symlink
 109         if (-l KEY_DIR.DS.SERVER_KEY) {
 110                 unless(unlink(KEY_DIR.DS.SERVER_KEY)) {
 111                         carp('unlink '.KEY_DIR.DS.SERVER_KEY.' failed: '.$!);
 112                         next;
 113                 }
 114         }
 115
 116         # Symlink to key
 117         unless(symlink($_->{key}, KEY_DIR.DS.SERVER_KEY)) {
 118                 carp('symlink '.$_->{key}.' to '.KEY_DIR.DS.SERVER_KEY.' failed: '.$!);
 119                 next;
 120         }
 121
 122         # Init args
 123         my @args = @{$_->{domains}};
 124
 125         # Prepend mail and domain to other args
 126         unshift(@args, $_->{mail}, $_->{domain});
 127
 128         # Preprend prod
 129         if (defined $_->{prod} && $_->{prod}) {
 130                 unshift(@args, '-p');
 131         }
 132
 133         # Preprend debug
 134         if ($debug) {
 135                 unshift(@args, '-d');
 136         }
 137
 138         # Run letscert with args
 139         my @out = capturex([0..1], 'letscert', @args);
 140
 141         # Deal with error
 142         if ($EXITVAL != 0) {
 143                 print join("\n", @out) if ($debug);
 144                 carp('letscert '.join(', ', @args).' failed: '.$!);
 145                 next;
 146         }
 147
 148         # Read cert
 149         my $content;
 150         unless($content = read_file(CERT_DIR.DS.SERVER_CRT)) {
 151                 carp('read_file '.CERT_DIR.DS.SERVER_CRT.' failed: '.$!);
 152                 next;
 153         }
 154
 155         # Handle old certificate
 156         if (-w $certDir && -f $_->{cert}) {
 157                 # Extract datetime suffix
 158                 $suffix = ($dt = DateTime->from_epoch(epoch => $mtime))->ymd('').$dt->hms('');
 159
 160                 # Rename old certificate
 161                 unless(rename($_->{cert}, $_->{cert}.'.'.$suffix)) {
 162                         carp('rename '.$_->{cert}.' to '.$_->{cert}.'.'.$suffix.' failed: '.$!);
 163                         next;
 164                 }
 165         }
 166
 167         # Save cert
 168         unless(write_file($_->{cert}, $content)) {
 169                 carp('write_file '.$_->{cert}.' failed: '.$!);
 170                 next;
 171         }
 172 }
 173
 174 # Exit with success
 175 exit EXIT_SUCCESS;