From f88ff93ef92f3ce79cc01220c4ee9fcbc14649cb Mon Sep 17 00:00:00 2001
From: jake <jake@jakes-mail.top>
Date: Fri, 2 Sep 2022 19:36:44 -0400
Subject: Add 'Gone' gemini status

---
 TO_FIX.md          |  2 ++
 config.toml.sample | 12 +++++++
 gmi.pl             | 99 +++++++++++++++++++++++++++++++++++++++++-------------
 3 files changed, 90 insertions(+), 23 deletions(-)

diff --git a/TO_FIX.md b/TO_FIX.md
index af0e0c1..0dd263e 100644
--- a/TO_FIX.md
+++ b/TO_FIX.md
@@ -23,3 +23,5 @@ handle signals like interrupt better
 recently-accepted-cert-cache for specific cert-req keys, doing a look up EACH and EVERY TIME can be expensive when it it likely that a single person will be looking around.
 
 reduce complexity in cert_req()
+
+put peer data in a global hash for easy access for logging and cgi scripts
diff --git a/config.toml.sample b/config.toml.sample
index a75fc25..6ec5e6a 100644
--- a/config.toml.sample
+++ b/config.toml.sample
@@ -136,3 +136,15 @@ assume_index = true
 #      '../pubkeys2.txt',
 #   ],
 #}
+#gone = {
+#   # this checks if a path location doesn't exist, but does if '.gone' is appended, which will return a gone gemini status
+#   append = true,
+#   path = [
+#       # regex matching
+#       '/some/path/that/is/percise/text.gmi',
+#       # This will match pretty a lot of things
+#       '/blog/2021*',
+#        # like '/blog/20215/april/' or even '/blog/2021-converense/'
+#        # in other words: be careful and be as specific as you can be!
+#  ]
+#}
diff --git a/gmi.pl b/gmi.pl
index 246b809..269ed36 100755
--- a/gmi.pl
+++ b/gmi.pl
@@ -7,7 +7,7 @@ use warnings;
 use 5.010;
 #use diagnostics;
 
-our $VERSION = 'v0.17.2';
+our $VERSION = 'v0.18.0';
 
 # Modules
 use IO::Socket::SSL; # CPAN
@@ -65,10 +65,10 @@ const our %GEM_RES_CODES => (
 const our @VALID_DEFAULT_SETTINGS =>
 	qw/bind ports tls assume_index dir_listing root working_dir cert_key_dir 
 	log_file log_to_stdout default_mime cert_key_dir_write_warning fork timeout
-	unix redirection redirect/;
+	unix redirection redirect gone/;
 const our @VALID_VHOST_SETTINGS =>
 	qw/auto_cert assume_index dir_listing root cert key default_mime bind ports
-	unix redirection redirect cert_req/;
+	unix redirection redirect cert_req gone/;
 
 my ($config, $err) = from_toml(_slurp('./config.toml'));
 if ($err) {
@@ -247,11 +247,20 @@ sub respond_to_client {
 		}
 	}
 
+	if (check_for_gone($vhost, $path)) {
+		goto DOC_GONE;
+	}
+
 	if (not $doc_loc = get_request_in_vhost_root($vhost, $path)) {
-		goto FAILURE;
+			goto FAILURE;
 	}
 	### $doc_loc
 
+	# checking if the path already has .gone for 'some reason'
+	if (substr($doc_loc, -5, 5) eq '.gone') { ## no critic (MagicNumbers)
+		goto DOC_GONE;
+	}
+
 	# not a directory
 	if (! -d $doc_loc) {
 		goto DOC_ASSIGNED;
@@ -291,6 +300,10 @@ sub respond_to_client {
 	speak($cl, 'success', 'text/gemini', $doc_loc, $path);
 	return;
 
+	DOC_GONE:
+	speak($cl, 'gone');
+	return;
+
 	FAILURE:
 	speak($cl, 'failure');
 	return;
@@ -386,25 +399,7 @@ sub get_request_in_vhost_root {
 		}
 	}
 	### $r
-
-	if (exists $config->{$vhost}{root}) {
-		my $p = accurate_path($config->{$vhost}{root}, $working_dir);
-		if (file_exists_and_readable("$p/$r")) {
-			return "$p/$r";
-		}
-	}
-	# try default's root
-	elsif (exists $config->{default}{root}) {
-		my $p = accurate_path($config->{default}{root}, $working_dir);
-		if (file_exists_and_readable("$p/$r")) {
-			return "$p/$r";
-		}
-	}
-	else {
-		serr("default and $vhost have improper root settings.");
-		return;
-	}
-	return;
+	return path_in_vhost_root_translated($vhost, $r);
 }
 
 sub file_exists_and_readable {
@@ -1220,3 +1215,61 @@ sub cert_req {
 	}
 	return;
 }
+
+sub check_for_gone {
+	my ($vhost, $path) = @_;
+	$path ? ($path = "/$path") : ($path = '/');
+
+	if (exists $config->{$vhost}{gone}) {
+		if (exists $config->{$vhost}{gone}{append} and $config->{$vhost}{gone}{append} eq 'true') {
+			if (path_in_vhost_root_translated($vhost, "$path.gone")) {
+				return 1;
+			}
+		}
+	}
+	elsif (exists $config->{default}{gone}) {
+		if (exists $config->{default}{gone}{append} and $config->{default}{gone}{append} eq 'true') {
+			if (path_in_vhost_root_translated($vhost, "$path.gone")) {
+				return 1;
+			}
+		}
+	}
+
+	### check regex (default shouldn't have path)
+	if (exists $config->{$vhost}{gone}{path}) {
+		for my $gone (@{ $config->{$vhost}{gone}{path} }) {
+			### $gone
+			my $gone_regex;
+			eval {
+				$gone_regex = qr{$gone};
+			} or serr("$vhost: gone ($gone): $EVAL_ERROR") and return 0;
+
+			if ($path =~ m/$gone_regex/) {
+				return 1;
+			}
+		}
+	}
+	return;
+}
+
+sub path_in_vhost_root_translated {
+	my ($vhost, $request) = @_;
+
+	if (exists $config->{$vhost}{root}) {
+		my $p = accurate_path($config->{$vhost}{root}, $working_dir);
+		if (file_exists_and_readable("$p/$request")) {
+			return "$p/$request";
+		}
+	}
+	# try default's root
+	elsif (exists $config->{default}{root}) {
+		my $p = accurate_path($config->{default}{root}, $working_dir);
+		if (file_exists_and_readable("$p/$request")) {
+			return "$p/$request";
+		}
+	}
+	else {
+		serr("default and $vhost have improper root settings.");
+		return;
+	}
+}
-- 
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