[pkg-lighttpd] Bug#706115: lighttpd bind to port 80 even though it's configured not to

[Gabriel Filion]

Package: lighttpd
Version: 1.4.28-2+squeeze1.3
Severity: important

lighttpd on my setup is currently not configured to bind on port 80, but
still does it.
as a result, if something else started before it that has already bound
to port 80,
lighttpd simply refuses to start.

in my case, I have varnish listening on port 80 and lighttpd on 8080 for
serving a fallback
html page when web nodes are down.

if I start varnish before lighttpd, then lighttpd won't start. starting
lighttpd, and then
varnish will get things working.

lighttpd is still bound to port 80 on IPv6 even though it's not supposed
to do it:

tcp        0      0 0.0.0.0:80              0.0.0.0:*
LISTEN      31368/varnishd  
tcp        0      0 0.0.0.0:8080            0.0.0.0:*
LISTEN      31338/lighttpd  
tcp6       0      0 :::80                   :::*
LISTEN      31338/lighttpd


I've found that this is due to the following line, which is included in
the default configuration file:

include_shell "/usr/share/lighttpd/use-ipv6.pl"

since it prevents lighttpd to co-exist with any other application that
binds to port 80 on a semi-random
fashion (because of non-deterministic order caused by parallelized boot
process), I consider
this default configuration to be an important problem.

-- System Information:
Debian Release: 6.0.7
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-xen-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_CA.UTF-8, LC_CTYPE=fr_CA.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.utf8)
Shell: /bin/sh linked to /bin/dash

Versions of packages lighttpd depends on:
ii  libattr1               1:2.4.44-2        Extended attribute shared library
ii  libbz2-1.0             1.0.5-6+squeeze1  high-quality block-sorting file co
ii  libc6                  2.11.3-4          Embedded GNU C Library: Shared lib
ii  libfam0                2.7.0-17          Client library to control the FAM 
ii  libldap-2.4-2          2.4.23-7.3        OpenLDAP libraries
ii  libpcre3               8.02-1.1          Perl 5 Compatible Regular Expressi
ii  libssl0.9.8            0.9.8o-4squeeze14 SSL shared libraries
ii  libterm-readline-perl- 1.0303-1          Perl implementation of Readline li
ii  lsb-base               3.2-23.2squeeze1  Linux Standard Base 3.2 init scrip
ii  mime-support           3.48-1            MIME files 'mime.types' & 'mailcap
ii  zlib1g                 1:1.2.3.4.dfsg-3  compression library - runtime

Versions of packages lighttpd recommends:
ii  spawn-fcgi                    1.6.3-1    A fastcgi process spawner

Versions of packages lighttpd suggests:
pn  apache2-utils          <none>            (no description available)
ii  openssl                0.9.8o-4squeeze14 Secure Socket Layer (SSL) binary a
pn  rrdtool                <none>            (no description available)

-- Configuration Files:
/etc/lighttpd/lighttpd.conf:

server.modules = (
        "mod_access",
        "mod_alias",
        "mod_compress",
        "mod_redirect",
#       "mod_rewrite",
)

server.document-root        = "/var/www"
server.upload-dirs          = ( "/var/cache/lighttpd/uploads" )
server.errorlog             = "/var/log/lighttpd/error.log"
server.pid-file             = "/var/run/lighttpd.pid"
server.username             = "www-data"
server.groupname            = "www-data"

index-file.names            = ( "index.php", "index.html",
                                "index.htm", "default.htm",
                               " index.lighttpd.html" )

url.access-deny             = ( "~", ".inc" )

static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" )

include_shell "/usr/share/lighttpd/use-ipv6.pl"

dir-listing.encoding        = "utf-8"
server.dir-listing          = "enable"

compress.cache-dir          = "/var/cache/lighttpd/compress/"
compress.filetype           = ( "application/x-javascript", "text/css", "text/html", "text/plain" )

include_shell "/usr/share/lighttpd/create-mime.assign.pl"
include_shell "/usr/share/lighttpd/include-conf-enabled.pl"


/etc/lighttpd/conf-enabled/port.conf:

server.port = 8080

-- no debconf information