Icecast - Sep 2004 - TIP: using icecast in chroot mode with YP announcing

Please post to the mailing list the next time Ralf.

I'm not using yp directory listings, but I can guess why it is not working.
You're probably missing the libcurl.so library in your chroot jail
directories. Here's the listing of files I have in the chroot jail:

-----%< cut here
> ls -R
.:
admin  etc  lib  opt  usr  var  web

./admin:
listclients.xsl  listmounts.xsl  manageauth.xsl  moveclients.xsl
response.xsl  stats.xsl

./etc:
localtime

./lib:
ld-linux.so.2    libcrypto.so.4  libgcc_s-3.3.2-20031023.so.1
libresolv.so.2  tls
libcom_err.so.2  libdl.so.2      libgcc_s.so.1                 libssl.so.4

./lib/tls:
libc.so.6  libm.so.6  libpthread.so.0

./opt:
icecast

./opt/icecast:
etc

./opt/icecast/etc:
icecast.xml

./usr:
lib

./usr/lib:
libcurl.so.2         libk5crypto.so.3  libogg.so.0     libxml2.so.2
libz.so.1
libgssapi_krb5.so.2  libkrb5.so.3      libvorbis.so.0  libxslt.so.1

./var:
log  run

./var/log:
icecast

./var/log/icecast:
access.log  error.log

./var/run:
icecast.pid

./web:
corner_bottomleft.jpg   corner_topleft.jpg   icecast.png  recordings
status.xsl
corner_bottomright.jpg  corner_topright.jpg  key.gif      status2.xsl
style.css

---%< cut here

I've figured out which shared libraries icecast is depending on by running
the ldd command on the icecast binary:

-----%< cut here
> ldd icecast
        libcurl.so.2 => /usr/lib/libcurl.so.2 (0x009e8000)
        libssl.so.4 => /lib/libssl.so.4 (0x00b00000)
        libcrypto.so.4 => /lib/libcrypto.so.4 (0x00101000)
        libgssapi_krb5.so.2 => /usr/lib/libgssapi_krb5.so.2 (0x00a5a000)
        libkrb5.so.3 => /usr/lib/libkrb5.so.3 (0x00a71000)
        libcom_err.so.2 => /lib/libcom_err.so.2 (0x0082a000)
        libk5crypto.so.3 => /usr/lib/libk5crypto.so.3 (0x00adc000)
        libresolv.so.2 => /lib/libresolv.so.2 (0x00a46000)
        libdl.so.2 => /lib/libdl.so.2 (0x00649000)
        libvorbis.so.0 => /usr/lib/libvorbis.so.0 (0x00cbe000)
        libxslt.so.1 => /usr/lib/libxslt.so.1 (0x00671000)
        libxml2.so.2 => /usr/lib/libxml2.so.2 (0x006b9000)
        libz.so.1 => /usr/lib/libz.so.1 (0x006a6000)
        libpthread.so.0 => /lib/tls/libpthread.so.0 (0x0064e000)
        libm.so.6 => /lib/tls/libm.so.6 (0x00625000)
        libc.so.6 => /lib/tls/libc.so.6 (0x004ea000)
        libogg.so.0 => /usr/lib/libogg.so.0 (0x001f3000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x004d2000)

-----%< cut here

Hope this info is helpful to you.

Regards,
KJ

-----Oorspronkelijk bericht-----
Van: ACiDAngel [mailto:list-icecast@rewtbox.de]
Verzonden: dinsdag 14 september 2004 19:29
Aan: 'Klaas Jan Wierenga'
Onderwerp: AW: [Icecast] Tip: using icecast in chroot mode may break
timestamp inaccess.log




Klaas Jan Wierenga wrote:
>
> Hi all,
>
> Just thought I'd share this little bit of information.
>
> If you're running Icecast in a chroot jail the timestamps in
I see you are using it chrooted - did you recognize any problems with yp
directory listenings?
My Icecast2 does not announce itself to the yp servers but if I just
deactivate chroot it does.
Maybe you have a solution for this too?
Did you copy any libs and/or files other than "locales" into the
chroot?

Regards
Ralf

On Sep 15, 2004, at 3:21 PM, Klaas Jan Wierenga wrote:
>
> Please post to the mailing list the next time Ralf.

Um, maybe you should remove the Reply-To: header in your email, smart 
guy.

/dale

Klaas Jan Wierenga wrote:
> I'm not using yp directory listings, but I can guess why it 
> is not working.
> You're probably missing the libcurl.so library in your chroot 
> jail directories. Here's the listing of files I have in the 
> chroot jail:
Definitely not, I rebuilt the whole lib structure i got from ldd in my
chroot
But i always get : 

[2004-09-16  23:15:04] EROR yp/yp_submit_url Got a NAK from yp_add(Unknown)
(http://dir.xiph.org/cgi-bin/yp-cgi)

If I switch chroot off everything works fine without any more changes.

All libs from "ldd icecast" are in the chroot-root in there right
path's

At first I also thought it is a lib-problem - but I think it cant be a
libraries problem because I already straced the icecast process with all its
childs for libcalls and there's nothing I can see that fails ...
Can anyone reproduce that ? Is it a bug ?

THX
Ralf

> Klaas Jan Wierenga wrote:
> 
> > I'm not using yp directory listings, but I can guess why it is not
> > working.
> > You're probably missing the libcurl.so library in your chroot jail
> > directories. Here's the listing of files I have in the chroot
jail:
> 
> Definitely not, I rebuilt the whole lib structure i got from 
> ldd in my chroot But i always get : 
> 
> [2004-09-16  23:15:04] EROR yp/yp_submit_url Got a NAK from 
> yp_add(Unknown)
> (http://dir.xiph.org/cgi-bin/yp-cgi)
> 
> If I switch chroot off everything works fine without any more changes.
> 
> All libs from "ldd icecast" are in the chroot-root in there 
> right path's
> 
> At first I also thought it is a lib-problem - but I think it 
> cant be a libraries problem because I already straced the 
> icecast process with all its childs for libcalls and there's 
> nothing I can see that fails ...
> Can anyone reproduce that ? Is it a bug ?

Afte noone could gave me a help I  found a solution for myself.
In icecast chroot mode the resolving/nscd does not work.
Also not, if the libresolv is copied to the icecast chroot.
(dunno if this is a chroot problem or if it is a problem/feature in
combination with gresecurity kernel patches which i use)

If I put hosts in icecastroot/etc and write into that hosts file my yp
hostnames it works fine.
I announce on xiph and oddsock so I created the following "hosts" file
in
the chrooted etc dir:

140.211.166.5 dir.xiph.org
66.98.134.94 www.oddsock.org


Good luck
Ralf