note use of ~/.caff/gnupghome/gpg.conf in manpage

[pgp-tools.git] / caff / caff

diff --git a/caff/caff b/caff/caff
index 7583720ee6fdd18bc9d2dc80cfa93ad8bf1d84c9..75ffcfd7e700cf098f5306e3cda34f1af2b0ae2e 100755 (executable)
--- a/caff/caff
+++ b/caff/caff
@@ -97,11 +97,20 @@ Import keys from file. Can be supplied more than once.
 
 =item $HOME/.caffrc  -  configuration file
 
+=item $HOME/.caff/keys/yyyy-mm-dd/  -  processed keys
+
+=item $HOME/.caff/gnupghome/  -  caff's working dir for gpg
+
+=item $HOME/.caff/gnupghome/gpg.conf  -  gpg configuration
+
+useful options include use-agent, default-cert-level, etc.
+
 =back
 
 =head1 CONFIGURATION FILE OPTIONS
 
 The configuration file is a perl script that sets values in the hash B<%CONFIG>.
+The file is generated when it does not exist.
 
 Example:
 
@@ -247,6 +256,10 @@ Default: none.
 
 http://pgp-tools.alioth.debian.org/
 
+=head1 SEE ALSO
+
+gpg(1), pgp-clean(1), /usr/share/doc/signing-party/examples/caffrc.sample.
+
 =cut
 
 use strict;
@@ -266,9 +279,62 @@ my $REVISION = '$Rev$';
 my ($REVISION_NUMER) = $REVISION =~ /(\d+)/;
 my $VERSION = "0.0.0.$REVISION_NUMER";
 
+sub generate_config() {
+       die "Error: \$LOGNAME is not set.\n" unless $ENV{LOGNAME};
+       my $gecos = (getpwnam($ENV{LOGNAME}))[6];
+       $gecos =~ s/,.*//;
+
+       my $gpg = GnuPG::Interface->new();
+       $gpg->call( 'gpg' );
+       $gpg->options->hash_init(
+               'extra_args' => [ qw{ --no-auto-check-trustdb --trust-model=always --with-colons --fixed-list-mode } ] );
+       $gpg->options->meta_interactive( 0 );
+       my ($inputfd, $stdoutfd, $stderrfd, $statusfd, $handles) = make_gpg_fds();
+       my $pid = $gpg->list_public_keys(handles => $handles, command_args => [ $gecos ]);
+       my ($stdout, $stderr, $status) = readwrite_gpg('', $inputfd, $stdoutfd, $stderrfd, $statusfd);
+       waitpid $pid, 0;
+
+       if ($stdout eq '') {
+               warn ("No data from gpg for list-key\n"); # There should be at least 'tru:' everywhere.
+       };
+
+       my @keys;
+       unless (@keys = ($stdout =~ /^pub:[^r:]*:(?:[^:]*:){2,2}([^:]+):/mg)) {
+               die "Error: No keys were found using \"gpg --list-public-keys '$gecos'\".\n";
+       }
+       unless ($stdout =~ /^uid:.*<(.+@.+)>.*:/m) {
+               die "Error: No email address was found using \"gpg --list-public-keys '$gecos'\".\n";
+       }
+       my $email = $1;
+
+       return <<EOT;
+# .caffrc -- vim:syntax=perl:
+# This file is in perl(1) format - see caff(1) for details.
+
+\$CONFIG{'owner'}       = '$gecos';
+\$CONFIG{'email'}       = '$email';
+
+# you can get your long keyid from
+#   gpg --with-colons --list-key <yourkeyid|name|emailaddress..>
+#
+# if you have a v4 key, it will simply be the last 16 digits of
+# your fingerprint.
+
+\$CONFIG{'keyid'}       = [ qw{@keys} ];
+EOT
+};
+
 sub load_config() {
        my $config = $ENV{'HOME'} . '/.caffrc';
-       -f $config or die "No file $config present.  See caff(1).\n";
+       unless (-f $config) {
+               print "No configfile $config present, I will use this template:\n";
+               my $template = generate_config();
+               print "$template\nPress enter to continue.";
+               <STDIN>;
+               open F, ">$config" or die "$config: $!";
+               print F $template;
+               close F;
+       }
        unless (scalar eval `cat $config`) {
                die "Couldn't parse $config: $EVAL_ERROR\n" if $EVAL_ERROR;
        };
@@ -448,8 +514,9 @@ sub readwrite_gpg($$$$$%) {
 sub ask($$;$$) {
        my ($question, $default, $forceyes, $forceno) = @_;
        my $answer;
+       my $yn = $default ? '[Y/n]' : '[y/N]';
        while (1) {
-               print $question,' ',($default ? '[Y/n]' : '[y/N]'), ' ';
+               print $question,' ',$yn, ' ';
                if ($forceyes && $forceno) {
                        print "$default (from config/command line)\n";
                        return $default;
@@ -464,9 +531,17 @@ sub ask($$;$$) {
                };
 
                $answer = <STDIN>;
+               if (!defined $answer) {
+                       $OUTPUT_AUTOFLUSH = 1;
+                       die "\n\n".
+                           "End of STDIN reached.  Are you using xargs?  Caff wants to read from STDIN,\n".
+                           "so you can't really use it with xargs.  A patch against caff to read from\n".
+                           "the terminal would be appreciated.\n".
+                           "For now instead of   cat keys | xargs caff  do  caff `cat keys`\n";
+               };
                chomp $answer;
-               last if ((defined $answer) && (length $answer <= 1));
-               print "Error reading from STDIN (are you using caff with xargs?).\n";
+               last if ((length $answer == 0) || ($answer =~ m/^[yYnN]$/) );
+               print "What about $yn is so hard to understand?\nAnswer with either 'n' or 'y' or just press enter for the default.\n";
                sleep 1;
        };
        my $result = $default;