[mp2] requesting URLs with path_info fails sometimes

awk-mp Thu, 27 Nov 2003 21:58:54 -0800

1. Problem Description:

  I'm testing with the httpd-std.conf file that comes with the FreeBSD port's
  apache2 install, with the following additions:


    LoadModule perl_module libexec/apache2/mod_perl.so
    PerlModule Apache2
    Alias "/cgi/" "/www/app/cgi/"
    <Directory "/www/app/cgi/">
      SetHandler perl-script
      PerlHandler ModPerl::Registry
      Options +ExecCGI
    </Directory>
    
  I have a CGI script in /www/app/cgi/ which dispatches based on PATH_INFO.
  Example:

    http://server.example.com/cgi/my-script/do/something

  If I start up an httpd server (httpd -X, or normally) and visit any URL with
  extra path elements, the requests always fail with one of the following
  errors (usually the first one):

    [Thu Nov 27 23:46:07 2003] [error] [client 172.16.1.2] Error: read 1 bytes, 
expected 143 ('(null)') at 
/usr/local/lib/perl5/site_perl/5.8.2/mach/Apache2/ModPerl/RegistryCooker.pm line 528.

    [Thu Nov 27 23:46:08 2003] [error] [client 172.16.1.2] Error reading 
'/www/app/cgi/my-script': 9:Bad file descriptor  at 
/usr/local/lib/perl5/site_perl/5.8.2/mach/Apache2/ModPerl/RegistryCooker.pm line 528.

  As soon as I visit http://server.example.com/cgi/my-script (i.e., the script
  name with no path info), the httpd instance "fixes" itself and everything
  works fine again (until a new instance is spawned then it exhibits the same
  behavior all over again).

  Any CGI script does it, including the following:

    #!/usr/bin/perl
    print "\$PATH_INFO = '$ENV{PATH_INFO}'\n";

  The behavior is the same under mod_perl 1.99_10. I can't remember what I was
  running before that, when all this worked.

  Also this FreeBSD is running under VMWare, if that matters.


2. Used Components and their Configuration:

*** mod_perl version 1.9911

*** using /usr/local/lib/perl5/site_perl/5.8.2/mach/Apache2/Apache/BuildConfig.pm
*** Makefile.PL options:
  MP_APXS         => /usr/local/sbin/apxs
  MP_COMPAT_1X    => 1
  MP_GENERATE_XS  => 1
  MP_INST_APACHE2 => 1
  MP_LIBNAME      => mod_perl
  MP_USE_DSO      => 1
  MP_USE_STATIC   => 1


*** /usr/local/sbin/httpd -V
Server version: Apache/2.0.48
Server built:   Nov 22 2003 00:13:11
Server's Module Magic Number: 20020903:4
Architecture:   32-bit
Server compiled with....
 -D APACHE_MPM_DIR="server/mpm/prefork"
 -D APR_HAS_SENDFILE
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D APR_USE_FLOCK_SERIALIZE
 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
 -D APR_HAS_OTHER_CHILD
 -D AP_HAVE_RELIABLE_PIPED_LOGS
 -D HTTPD_ROOT="/usr/local"
 -D SUEXEC_BIN="/usr/local/bin/suexec"
 -D DEFAULT_PIDLOG="/var/run/httpd.pid"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_LOCKFILE="/var/run/accept.lock"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="etc/apache2/mime.types"
 -D SERVER_CONFIG_FILE="etc/apache2/httpd.conf"


*** /usr/local/bin/perl -V
Summary of my perl5 (revision 5.0 version 8 subversion 2) configuration:
  Platform:
    osname=freebsd, osvers=4.9-release, archname=i386-freebsd
    uname='freebsd cipater.at.home 4.9-release freebsd 4.9-release #0: thu oct 30 
03:54:50 est 2003 [EMAIL PROTECTED]:usrobjusrsrcsysawk i386 '
    config_args='-sde -Dprefix=/usr/local -Darchlib=/usr/local/lib/perl5/5.8.2/mach 
-Dprivlib=/usr/local/lib/perl5/5.8.2 -Dman3dir=/usr/local/lib/perl5/5.8.2/man/man3 
-Dman1dir=/usr/local/man/man1 -Dsitearch=/usr/local/lib/perl5/site_perl/5.8.2/mach 
-Dsitelib=/usr/local/lib/perl5/site_perl/5.8.2 -Dscriptdir=/usr/local/bin -Ui_malloc 
-Ui_iconv -Uinstallusrbinperl -Dcc=cc -Doptimize=-O2 -pipe -march=pentiumpro 
-Duseshrplib -Dccflags=-DAPPLLIB_EXP="/usr/local/lib/perl5/5.8.2/BSDPAN" -Ud_dosuid 
-Ui_gdbm -Dusethreads=n -Dusemymalloc=y'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
    usemymalloc=y, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-DAPPLLIB_EXP="/usr/local/lib/perl5/5.8.2/BSDPAN" 
-DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -fno-strict-aliasing -I/usr/local/include',
    optimize='-O2 -pipe -march=pentiumpro',
    cppflags='-DAPPLLIB_EXP="/usr/local/lib/perl5/5.8.2/BSDPAN" -DHAS_FPSETMASK 
-DHAS_FLOATINGPOINT_H -fno-strict-aliasing -I/usr/local/include'
    ccversion='', gccversion='2.95.4 20020320 [FreeBSD]', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=4, prototype=define
  Linker and Libraries:
    ld='cc', ldflags ='-Wl,-E  -L/usr/local/lib'
    libpth=/usr/lib /usr/local/lib
    libs=-lgdbm -lm -lcrypt -lutil -lc
    perllibs=-lm -lcrypt -lutil -lc
    libc=, so=so, useshrplib=true, libperl=libperl.so
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='  
-Wl,-R/usr/local/lib/perl5/5.8.2/mach/CORE'
    cccdlflags='-DPIC -fPIC', lddlflags='-shared  -L/usr/local/lib'


Characteristics of this binary (from libperl): 
  Compile-time options: USE_LARGE_FILES
  Built under freebsd
  Compiled at Nov 27 2003 02:14:25
  %ENV:
    PERL_LWP_USE_HTTP_10="1"
  @INC:
    /usr/local/lib/perl5/site_perl/5.8.2/mach
    /usr/local/lib/perl5/site_perl/5.8.2
    /usr/local/lib/perl5/site_perl
    /usr/local/lib/perl5/5.8.2/BSDPAN
    /usr/local/lib/perl5/5.8.2/mach
    /usr/local/lib/perl5/5.8.2
    .

-- 
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[mp2] requesting URLs with path_info fails sometimes

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