docs: more work

[cgi-auth-flexible.git] / cgi-auth-flexible.pm

diff --git a/cgi-auth-flexible.pm b/cgi-auth-flexible.pm
index 8517f3bcb04dd799b5f690ef976ea8dad611a334..f393b3cfa06f3276ffb338e11540995459d89111 100644 (file)
--- a/cgi-auth-flexible.pm
+++ b/cgi-auth-flexible.pm
@@ -17,8 +17,6 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-die "need to fix js hijacking";
-
 use strict;
 use warnings FATAL => 'all';
 
@@ -79,10 +77,11 @@ sub has_a_param ($$) {
 
 sub get_params ($) {
     my ($r) = @_;
-    my %p;
     my $c = $r->{Cgi};
-    foreach my $name ($c->param()) {
-       $p{$name} = [ $c->param($name) ];
+    my $vars = $c->Vars();
+    my %p;
+    foreach my $name (keys %$vars) {
+       $p{$name} = [ split "\0", $vars->{$name} ];
     }
     return \%p;
 }
@@ -181,8 +180,9 @@ sub gen_plain_login_link ($$) {
 sub gen_srcdump_link_html ($$$$) {
     my ($c,$r,$anchor,$specval) = @_;
     my %params = ($r->{S}{srcdump_param_name} => [ $specval ]);
-    return '<a href="'.escapeHTML($r->url_with_query_params(\%params)).'">'.
-       $anchor."</a>";
+    return '<a href="'.
+       escapeHTML($r->url_with_query_params(\%params,'SRCDUMP')).
+       '">'.$anchor."</a>";
 }
 sub gen_plain_licence_link_html ($$) {
     my ($c,$r) = @_;
@@ -447,14 +447,13 @@ sub new_verifier {
            get_path_info => sub { $_[0]->path_info() },
            get_cookie => sub { $_[0]->cookie($_[1]->{S}{cookie_name}) },
            get_method => sub { $_[0]->request_method() },
-           check_https => sub { !!$_[0]->https() },
+           is_https => sub { !!$_[0]->https() },
            get_url => sub { $_[0]->url(); },
             is_login => sub { defined $_[1]->_rp('password_param_name') },
             login_ok => \&login_ok_password,
             username_password_error => sub { die },
            is_logout => sub { $_[1]->has_a_param('logout_param_names') },
            is_loggedout => sub { $_[1]->has_a_param('loggedout_param_names') },
-           is_page => sub { return 1 },
            handle_divert => sub { return 0 },
            do_redirect => \&do_redirect_cgi, # this hook is allowed to throw
            cookie_path => "/",
@@ -668,9 +667,9 @@ my @ca = (-name => $r->{S}{cookie_name},
 
 # pages/param-sets are
 #   n normal non-mutating page
-#   r retrieval of information for JS, non-mutating
+#   r retrieval of information for JS etc., non-mutating
 #   m mutating page
-#   u update of information by JS, mutating
+#   u update of information by JS etc., mutating
 #   i login
 #   o logout
 #   O "you have just logged out" page load
@@ -790,7 +789,7 @@ sub _check_divert_core ($) {
 
     my $cooks = $r->_ch('get_cookie');
 
-    if ($r->{S}{encrypted_only} && !$r->_ch('check_https')) {
+    if ($r->{S}{encrypted_only} && !$r->_ch('is_https')) {
         return ({ Kind => 'REDIRECT-HTTPS',
                   Message => $r->_gt("Redirecting to secure server..."),
                   CookieSecret => undef,
@@ -907,6 +906,7 @@ sub _check_divert_core ($) {
         die unless $parmt eq 'y';
         die unless $cookh eq $parmh;
     }
+    $r->{ParmT} = $parmt;
     $r->{AssocSecret} = $cooks;
     $r->{UserOK} = $cooku;
 #print STDERR "C-D-C OK\n";
@@ -1036,12 +1036,16 @@ sub get_username ($) {
     return $r->{UserOK};
 }
 
-sub url_with_query_params ($$) {
-    my ($r, $params) = @_;
+sub url_with_query_params ($$;$) {
+    my ($r, $params, $nonpagetype) = @_;
 #print STDERR "PARAMS ",Dumper($params);
     my $uri = URI->new($r->_ch('get_url'));
     $uri->path($uri->path() . $params->{''}[0]) if $params->{''};
-    $uri->query_form(flatten_params($params));
+    my @flatparams = flatten_params($params);
+    if (defined $nonpagetype && $r->need_add_hidden('GET',$nonpagetype)) {
+       push @flatparams, $r->{S}{assoc_param_name}, $r->secret_hidden_val();
+    }
+    $uri->query_form(@flatparams);
     return $uri->as_string();
 }
 
@@ -1073,7 +1077,7 @@ sub check_ok ($) {
     }
 
     if ($kind =~ m/^REDIRECT-/) {
-       # for redirects, we honour stored NextParams and SetCookie,
+       # for redirects, we honour stored Params and Cookie,
        # as we would for non-divert
        if ($kind eq 'REDIRECT-LOGGEDOUT') {
            $params->{$r->{S}{loggedout_param_names}[0]} = [ 1 ];
@@ -1281,11 +1285,39 @@ sub check_mutate ($) {
     $r->_must_be_post();
 }
 
-sub mutate_ok ($) {
-    my ($r) = @_;
+our %_resource_get_needs_secret_hidden =
+    (map { $_ => 0 } qw(PAGE FRAME IFRAME SRCDUMP STYLESHEET FAVICON ROBOTS),
+     map { $_ => 1 } qw(IMAGE SCRIPT AJAX-XML AJAX-JSON AJAX-OTHER));
+
+sub update_get_need_add_hidden ($$;$) {
+    my ($r, $reqtype, $value, $force) = @_;
+    my $hash = ref $r
+       ? ($r->{GetNeedsSecretHidden} ||= { })
+       : \%_resource_get_needs_secret_hidden;
+    return if !$force &&
+       (exists $_resource_get_needs_secret_hidden{$reqtype} ||
+        exists $hash->{$reqtype});
+    $hash->{$reqtype} = $value;
+}
+
+sub need_add_hidden ($$) {
+    my ($r, $method, $reqtype) = @_;
+    return 1 if $method ne 'GET';
+    if (ref $r) {
+       my $ent = $r->{GetNeedsSecretHidden}{$reqtype};
+       return $ent if defined $ent;
+    }
+    my $ent = $_resource_get_needs_secret_hidden{$reqtype};
+    return $ent if defined $ent;
+    die "unsupported nonpage GET type $reqtype";
+}
+
+sub check_nonpage ($$) {
+    my ($r, $reqtype) = @_;
     $r->_assert_checked();
-    die if $r->{Divert};
-    return $r->_is_post();
+    return unless $r->resource_get_needs_secret_hidden($nonpagetype);
+    return if $r->{ParmT};
+    die "missing hidden secret parameter on nonpage request $nonpagetype";
 }
 
 #---------- output ----------