September Morn Update

Task/SQL-based-authentication/Perl-6/sql-based-authentication.pl6

@@ -0,0 +1,29 @@
+use v6;
+use DBIish;
+
+multi connect_db(:$dbname, :$host, :$user, :$pass) {
+   my $db = DBIish.connect("mysql",host => $host, database =>$dbname, user =>$user, password =>$pass, :RaiseError)
+      or die "ERROR: {DBIish.errstr}.";
+   $db;
+}
+
+multi create_user(:$db, :$user, :$pass) {
+   #https://stackoverflow.com/questions/53365101/converting-pack-to-perl6
+   my $salt = Buf.new((^256).roll(16));
+   my $sth = $db.prepare(q:to/STATEMENT/);
+      INSERT IGNORE INTO users (username, pass_salt, pass_md5)
+      VALUES (?, ?, unhex(md5(concat(pass_salt, ?))))
+   STATEMENT
+   $sth.execute($user,$salt,$pass);
+   $sth.insert-id or Any;
+}
+
+multi authenticate_user (:$db, :$user, :$pass) {
+   my $sth = $db.prepare(q:to/STATEMENT/);
+       SELECT userid FROM users WHERE
+       username=? AND pass_md5=unhex(md5(concat(pass_salt, ?)))
+   STATEMENT
+   $sth.execute($user,$pass);
+   my $userid =  $sth.fetch;
+   $userid[0] or Any;
+}