I'm relatively new to Apache::ASP and have been trying to install a __DIE__
handler to catch exceptions thrown deep within code. My aim is to be able to
call die() from anywhere and have it caught in a central location where I
can parse the message and display the appropriate HTML to the user. I
especially want this to work with DBI and RaiseError => 1.
Examining the example global.asa I see this line:
$SIG{__DIE__} = \&Carp::confess;
which looks promising, so I replace it with:
$SIG{__DIE__} = sub {
$Response->Debug("Testing $_[0]");
print <<HTML;
<html>
<head><title>argh</title></head>
<body>
<p>something tragic happened</p>
</body>
</html>
HTML
$Response->Flush();
$Response->End();
};
This is the only thing in my global.asa. Unfortunately, it never gets
called. I test this with Debug -2 and get this:
----------------------------------------------------------
Errors Output
wibble at index.asp line 6. , /usr/share/perl5/Apache/ASP.pm line 1556
Debug Output
RUN ASP (v2.31) for /var/www/test/index.asp
call srand() post fork
GlobalASA package
Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30
e6b2d3c28
global.asa was not cached for
_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30e6b2d3c28
compiling global.asa
Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30
e6b2d3c28 _var_www_test__asp_global_asaxa20bc880913eb0dba64ba30e6b2d3c28
exists 1 - asp: Apache::ASP=HASH(0x8438b04); compiled: HASH(0x8445a48);
exists: 1; id:
_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30e6b2d3c28; package:
Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30
e6b2d3c28; - --- - exists: 0; mtime: 0;
global.asa routines -
creating dbm for file /var/www/test/.asp/.state/server/internal, db
SDBM_File, serializer: Data::Dumper
creating dbm for file /var/www/test/.asp/.state/server/application, db
SDBM_File, serializer: Data::Dumper
session id from cookie: 0675f8c92a27779896700cfe67aebf8f
refreshing 0675f8c92a27779896700cfe67aebf8f with timeout 1020011987
creating dbm for file
/var/www/test/.asp/.state/06/0675f8c92a27779896700cfe67aebf8f, db SDBM_File,
serializer: Data::Dumper
session not expired - time: 1020010787; timeout: 1020011923;
tieing session 0675f8c92a27779896700cfe67aebf8f
statinc init
stat register of Exporter.pm /usr/share/perl/5.6.1/Exporter.pm Exporter
stat register of Carp.pm /usr/share/perl/5.6.1/Carp.pm Carp
stat register of Errno.pm /usr/lib/perl/5.6.1/Errno.pm Errno
stat register of Time/Local.pm /usr/share/perl/5.6.1/Time/Local.pm
Time::Local
stat register of lib.pm /usr/share/perl/5.6.1/lib.pm lib
stat register of DynaLoader.pm /usr/lib/perl/5.6.1/DynaLoader.pm DynaLoader
stat register of MLDBM/Serializer/Data/Dumper.pm
/usr/share/perl5/MLDBM/Serializer/Data/Dumper.pm
MLDBM::Serializer::Data::Dumper
stat register of Apache/DBI.pm /usr/share/perl5/Apache/DBI.pm Apache::DBI
stat register of Tie/Hash.pm /usr/share/perl/5.6.1/Tie/Hash.pm Tie::Hash
stat register of Apache/ASP.pm /usr/share/perl5/Apache/ASP.pm Apache::ASP
skipping StatINC register of Apache
skipping StatINC register of Apache::Constants
stat register of strict.pm /usr/share/perl/5.6.1/strict.pm strict
stat register of vars.pm /usr/share/perl/5.6.1/vars.pm vars
stat register of Config.pm /usr/lib/perl/5.6.1/Config.pm Config
stat register of Carp/Heavy.pm /usr/share/perl/5.6.1/Carp/Heavy.pm
Carp::Heavy
stat register of Class/Struct.pm /usr/share/perl/5.6.1/Class/Struct.pm
Class::Struct
stat register of MLDBM/Sync/SDBM_File.pm
/usr/share/perl5/MLDBM/Sync/SDBM_File.pm MLDBM::Sync::SDBM_File
stat register of Devel/Symdump.pm /usr/share/perl5/Devel/Symdump.pm
Devel::Symdump
stat register of Data/Dumper.pm /usr/lib/perl/5.6.1/Data/Dumper.pm
Data::Dumper
stat register of Apache/Server.pm /usr/lib/perl5/Apache/Server.pm
Apache::Server
stat register of XSLoader.pm /usr/lib/perl/5.6.1/XSLoader.pm XSLoader
stat register of Digest/MD5.pm /usr/lib/perl5/Digest/MD5.pm Digest::MD5
stat register of Apache/Connection.pm /usr/lib/perl5/Apache/Connection.pm
Apache::Connection
stat register of Exporter/Heavy.pm /usr/share/perl/5.6.1/Exporter/Heavy.pm
Exporter::Heavy
stat register of DBI.pm /usr/lib/perl5/DBI.pm DBI
stat register of MLDBM/Sync.pm /usr/share/perl5/MLDBM/Sync.pm MLDBM::Sync
stat register of Apache/Constants/Exports.pm
/usr/lib/perl5/Apache/Constants/Exports.pm Apache::Constants::Exports
stat register of mod_perl.pm /usr/lib/perl5/mod_perl.pm mod_perl
stat register of warnings/register.pm
/usr/share/perl/5.6.1/warnings/register.pm warnings::register
stat register of warnings.pm /usr/share/perl/5.6.1/warnings.pm warnings
stat register of Apache/Table.pm /usr/lib/perl5/Apache/Table.pm
Apache::Table
stat register of SDBM_File.pm /usr/lib/perl/5.6.1/SDBM_File.pm SDBM_File
stat register of overload.pm /usr/share/perl/5.6.1/overload.pm overload
stat register of MLDBM.pm /usr/share/perl5/MLDBM.pm MLDBM
stat register of Fcntl.pm /usr/lib/perl/5.6.1/Fcntl.pm Fcntl
stat register of AutoLoader.pm /usr/share/perl/5.6.1/AutoLoader.pm
AutoLoader
includes have not changed for script index.asp
parse file index.asp
parsing index.asp
undefing sub
Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30
e6b2d3c28::__ASP__var_www_test_index_aspxa20bc880913eb0dba64ba30e6b2d3c28
code CODE(0x8499a68)
compiling into package
Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30
e6b2d3c28 subid
[Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba3
0e6b2d3c28::__ASP__var_www_test_index_aspxa20bc880913eb0dba64ba30e6b2d3c28]
Script_OnStart
executing __ASP__var_www_test_index_aspxa20bc880913eb0dba64ba30e6b2d3c28
wibble at index.asp line 6. , /usr/share/perl5/Apache/ASP.pm line 1556
Script_OnEnd
ASP Done Processing - asp: Apache::ASP=HASH(0x8438b04);
errors out <li> wibble at index.asp line 6. , /usr/share/perl5/Apache/ASP.pm
line 1556
ASP to Perl Script
-: package
Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30
e6b2d3c28; ;; sub
Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30
e6b2d3c28::__ASP__var_www_test_index_aspxa20bc880913eb0dba64ba30e6b2d3c28
{ ;; package
Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30
e6b2d3c28; ;; use strict;;use vars qw($Application $Session $Response
$Server $Request);;use lib qw(/var/www/test/.asp);;;
-: #line 1 index.asp
1: ; &ASP::WriteRef($main::Response, \('<html>
2: <head>
3: <title>Don\'t see me</title>
4: </head>
5: <body>
6: ')); die "wibble" ; &ASP::WriteRef($main::Response, \('
7: </body>
8: </html>'));;;no lib qw(/var/www/test/.asp); ;; }
----------------------------------------------------------
As you can see, my custom handler was apparently never called. The same
thing happens if I define an actual subroutine and assign a reference to it
instead of using an anonymous sub.
When I move the $SIG{__DIE__} = sub { ... }; assignment into Script_OnStart,
it *does* get called, but I get this output:
----------------------------------------------------------
something tragic happened
Errors Output
Can't find label APACHE_ASP_EXECUTE_END at /usr/share/perl5/Apache/ASP.pm
line 3627. , /usr/share/perl5/Apache/ASP.pm line 1556
Debug Output
[index.asp] - Testing wibble at index.asp line 6.
Can't find label APACHE_ASP_EXECUTE_END at /usr/share/perl5/Apache/ASP.pm
line 3627. , /usr/share/perl5/Apache/ASP.pm line 1556
ASP to Perl Script
-: package
Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30
e6b2d3c28; ;; sub
Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30
e6b2d3c28::__ASP__var_www_test_index_aspxa20bc880913eb0dba64ba30e6b2d3c28
{ ;; package
Apache::ASP::Compiles::_var_www_test__asp_global_asaxa20bc880913eb0dba64ba30
e6b2d3c28; ;; use strict;;use vars qw($Application $Session $Response
$Server $Request);;use lib qw(/var/www/test/.asp);;;
-: #line 1 index.asp
1: ; &ASP::WriteRef($main::Response, \('<html>
2: <head>
3: <title>Don\'t see me</title>
4: </head>
5: <body>
6: ')); die "wibble" ; &ASP::WriteRef($main::Response, \('
7: </body>
8: </html>'));;;no lib qw(/var/www/test/.asp); ;; }
----------------------------------------------------------
Is one not supposed to call $Response->End() from a __DIE__ handler? Am I
missing something obvious?
Some info:
----------------------------------------------------------
$ uname -a
Linux woody 2.4.18 #1 Sun Mar 3 12:10:47 EST 2002 i686 unknown
$ /usr/sbin/apache-perl -V
Server version: Apache/1.3.24 (Unix) Debian GNU/Linux
Server built: Apr 13 2002 18:07:20
Server's Module Magic Number: 19990320:11
Server compiled with....
-D EAPI
-D HAVE_MMAP
-D HAVE_SHMGET
-D USE_SHMGET_SCOREBOARD
-D USE_MMAP_FILES
-D HAVE_FCNTL_SERIALIZED_ACCEPT
-D HAVE_SYSVSEM_SERIALIZED_ACCEPT
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D HTTPD_ROOT="/usr"
-D SUEXEC_BIN="/usr/lib/apache/suexec"
-D DEFAULT_PIDLOG="/var/run/apache-perl.pid"
-D DEFAULT_SCOREBOARD="/var/run/apache-perl.scoreboard"
-D DEFAULT_LOCKFILE="/var/run/apache-perl.lock"
-D DEFAULT_XFERLOG="/var/log/apache-perl/access.log"
-D DEFAULT_ERRORLOG="/var/log/apache-perl/error.log"
-D TYPES_CONFIG_FILE="/etc/mime.types"
-D SERVER_CONFIG_FILE="/etc/apache-perl/httpd.conf"
-D ACCESS_CONFIG_FILE="/etc/apache-perl/access.conf"
-D RESOURCE_CONFIG_FILE="/etc/apache-perl/srm.conf"
$ /usr/sbin/apache-perl -l
Compiled-in modules:
http_core.c
mod_so.c
mod_perl.c
mod_macro.c
suexec: enabled; valid wrapper /usr/lib/apache/suexec
----------------------------------------------------------
Apache::ASP is version 2.31.
Thanks in advance for any help you can offer.
Regards,
Ross Thomas
: "We dance round in a ring and suppose,
: but the secret sits in the middle and knows" - Robert Frost
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