associdlen => 128, # bits
login_timeout => 86400, # seconds
param_name => 'cah_associd',
+ promise_check_mutate => 0,
cookie_name => 'cah_associd', # make undef to disable cookie
get_param => sub { $_[0]->param($s->{S}{param_name}) },
get_cookie => sub { $s->{S}{cookie_name}
sub _check ($) {
my ($r) = @_;
my $qassoc = $r->_cm('get_param');
- if (!defined $qassoc) {
- $qassoc = $r->_cm('get_cookie');
+ my ($nassoc,$nmutate);
+ if (!defined $r->{S}{cookie_name}) {
+ # authentication is by hidden form parameter only
return undef unless defined $qassoc;
- return undef unless $r->_cm('get_method') eq 'GET';
+ $nassoc = $qassoc;
+ $nmutate = 1;
+ } else {
+ # authentication is by cookie
+ # the cookie suffices for read-only GET requests
+ # for mutating and non-GET requests we require hidden param too
+ my $cassoc = $r->_cm('get_cookie');
+ return undef unless defined $cassoc;
+ $nassoc = $cassoc;
+ if (defined $qassoc && $qassoc eq $cassoc) {
+ $nmutate = 1;
+ } else {
+ return undef unless $r->{S}{promise_check_mutate};
+ return undef unless $r->_cm('get_method') eq 'GET';
+ $nmutate = 0;
+ }
}
- my $dbh = $r->_dbopen();
+ my $dbh = $r->{Dbh};
my ($nusername, $nlast) =
$dbh->selectrow_array("SELECT username, last".
" FROM $r->{S}{assocdb_table}".
- " WHERE associd = ?", {}, $qassoc);
+ " WHERE associd = ?", {}, $nassoc);
return undef unless defined $nusername;
my $timeout = $r->{S}{login_timeout};
return undef unless !defined $timeout || time <= $nlast + $timeout;
- return ($nusername, $qassoc);
+ # hooray
+ return ($nusername, $nassoc, $nmutate);
}
sub check ($) {
my ($r) = @_;
- my ($nusername, $qassoc) = $r->_check() or return undef;
+ my ($nusername, $nassoc, $nmutate) = $r->_check() or return undef;
- # hooray
$dbh->do("UPDATE $r->{S}{assocdb_table}".
" SET last = ?".
- " WHERE associd = ?", {}, time, $qassoc);
+ " WHERE associd = ?", {}, time, $nassoc);
$dbh->do("COMMIT");
- $r->{U} = $nusername;
- $r->{A} = $qassoc;
- return $username;
+ $r->{Username} = $nusername;
+ $r->{Assoc} = $nassoc;
+ $r->{Mutate} = $nmutate;
+ return $nusername;
+}
+
+sub check_mutate ($) {
+ my ($r) = @_;
}
sub logout ($) {
my ($r) = @_;
- if (my ($nusername, $qassoc) = $r->_check()) {
- $dbh->do("DELETE FROM $r->{S}{assocdb_table}".
- " WHERE associd = ?", {}, $qassoc);
- $dbh->do("COMMIT");
- }
+ my ($nusername, $nassoc, $nmutate) = $r->_check();
+ return undef unless $nmutate;
+ $dbh->do("DELETE FROM $r->{S}{assocdb_table}".
+ " WHERE associd = ?", {}, $nassoc);
+ $dbh->do("COMMIT");
+ return $nusername;
}
sub username ($) {
my ($r) = @_;
- return $r->{U};
+ return $r->{Username};
sub hiddenv ($) {
my ($r) = @_;