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Hi Guys,
First of all thanks for being so prompt with the answers on this list.
Now I am trying to restrict eggdrop to listen only a specific port for
the telnet support. I thought about using portcon and friends but I keep
getting the error bellow:
lrfurtado:~/selinux/eggdrop# make
Compiling default eggdrop module
echo "ifdef(\`""eggdrop""_per_role_template',\`" > tmp/eggdrop.mod.role
m4 -D enable_mcs -D distro_debian -D direct_sysadm_daemon -D
hide_broken_symptoms -D mls_num_sens=16 -D mls_num_cats=1024 -D
mcs_num_cats=1024 /usr/share/selinux/default/include/rolemap | gawk
'/^[[:blank:]]*[A-Za-z]/{ print "gen_require(type " $3 "; role " $1
";)\neggdrop_per_role_template(" $2 "," $3 "," $1 ")" }' >>
tmp/eggdrop.mod.role
echo "')" >> tmp/eggdrop.mod.role
echo "ifdef(\`""eggdrop""_per_userdomain_template',\`" >>
tmp/eggdrop.mod.role
echo "errprint(\`Warning: per_userdomain_templates have been renamed to
per_role_templates (""eggdrop""_per_userdomain_template)'__endline__)"
>> tmp/eggdrop.mod.role
m4 -D enable_mcs -D distro_debian -D direct_sysadm_daemon -D
hide_broken_symptoms -D mls_num_sens=16 -D mls_num_cats=1024 -D
mcs_num_cats=1024 /usr/share/selinux/default/include/rolemap | gawk
'/^[[:blank:]]*[A-Za-z]/{ print "gen_require(type " $3 "; role " $1
";)\neggdrop_per_userdomain_template(" $2 "," $3 "," $1 ")" }' >>
tmp/eggdrop.mod.role
echo "')" >> tmp/eggdrop.mod.role
m4 -D enable_mcs -D distro_debian -D direct_sysadm_daemon -D
hide_broken_symptoms -D mls_num_sens=16 -D mls_num_cats=1024 -D
mcs_num_cats=1024 -s
/usr/share/selinux/default/include/support/all_perms.spt
/usr/share/selinux/default/include/support/file_patterns.spt
/usr/share/selinux/default/include/support/ipc_patterns.spt
/usr/share/selinux/default/include/support/loadable_module.spt
/usr/share/selinux/default/include/support/misc_macros.spt
/usr/share/selinux/default/include/support/misc_patterns.spt
/usr/share/selinux/default/include/support/mls_mcs_macros.spt
/usr/share/selinux/default/include/support/obj_perm_sets.spt
tmp/all_interfaces.conf eggdrop.te tmp/eggdrop.mod.role > tmp/eggdrop.tmp
/usr/bin/checkmodule -M -m tmp/eggdrop.tmp -o tmp/eggdrop.mod
/usr/bin/checkmodule: loading policy configuration from tmp/eggdrop.tmp
eggdrop.te":39:ERROR 'syntax error' at token 'portcon' on line 4063:
type eggdrop_server_packet_t, packet_type, server_packet_type;
portcon tcp 3333 system_u:object_r:eggdrop_telnet_port_t:s0
/usr/bin/checkmodule: error(s) encountered while parsing configuration
make: *** [tmp/eggdrop.mod] Error 1
lrfurtado:~/selinux/eggdrop# vi
I tried using portcon like it's used on corenetwork.te
policy_module(eggdrop, 1.0.0)
########################################
#
# Declarations
#
gen_require(`
type unconfined_t;
role unconfined_r;
role object_r;
attribute packet_type;
attribute port_type;
attribute client_packet_type;
attribute server_packet_type;
')
type eggdrop_t;
type eggdrop_exec_t;
type eggdrop_home_t;
type eggdrop_tty_device_t;
type eggdrop_devpts_t;
role unconfined_r types eggdrop_t;
role object_r types eggdrop_exec_t;
application_domain(eggdrop_t, eggdrop_exec_t)
type eggdrop_conf_t;
files_config_file(eggdrop_conf_t)
allow eggdrop_t eggdrop_conf_t:dir list_dir_perms;
read_files_pattern(eggdrop_t,eggdrop_conf_t,eggdrop_conf_t)
read_lnk_files_pattern(eggdrop_t,eggdrop_conf_t,eggdrop_conf_t)
corenet_tcp_bind_all_nodes(eggdrop_t);
corenet_tcp_connect_all_ports(eggdrop_t)
corenet_tcp_sendrecv_all_ports(eggdrop_t)
type eggdrop_telnet_port_t, port_type;
type eggdrop_client_packet_t, packet_type, client_packet_type;
type eggdrop_server_packet_t, packet_type, server_packet_type;
portcon tcp 3333 gen_context(system_u:object_r:eggdrop_telnet_port_t,s0)
unconfined_run_to(eggdrop_t, eggdrop_exec_t)
libs_use_ld_so(eggdrop_t)
libs_use_shared_libs(eggdrop_t)
miscfiles_read_localization(eggdrop_t)
files_search_usr(eggdrop_t)
files_read_usr_files(eggdrop_t)
files_search_tmp(eggdrop_t)
files_manage_generic_tmp_dirs(eggdrop_t)
files_manage_generic_tmp_files(eggdrop_t)
files_search_home(eggdrop_t)
corecmd_search_bin(eggdrop_t)
files_home_filetrans(eggdrop_t, eggdrop_home_t, file);
fs_associate(eggdrop_home_t)
manage_files_pattern(eggdrop_t,eggdrop_home_t,eggdrop_home_t)
manage_files_pattern(unconfined_t, eggdrop_home_t, eggdrop_home_t)
auth_use_nsswitch(eggdrop_t)
allow eggdrop_t self:fifo_file write;
allow eggdrop_t self:fifo_file read;
On 11-03-30 07:52, Dominick Grift wrote:
> On 03/30/2011 01:46 PM, Luciano Furtado wrote:
>> On 11-03-28 05:06, Dominick Grift wrote:
>>> On 03/28/2011 02:32 AM, Luciano Furtado wrote:
>
>>>> Hi guys,
>
>>>> I started creating my policy module for the eggdrop irc bot. I am
>>>> getting stuck on simple task. I want to add a transition from
>>>> unconfined_t to eggdrop_t when I run a eggdrop_exec_t file.
>
>>>> This is what I have:
>
>>>> policy_module(eggdrop, 1.0.0)
>
>>>> ########################################
>>>> ## Declarations#gen_require(`
>>>> type unconfined_t;
>>>> ')
>>>> type eggdrop_t;
>>>> type eggdrop_exec_t;
>
>>>> application_executable_file(eggdrop_exec_t)
>
>>> This is not required, it is in "application_domain() which you should
>>> call. lack of application_domain(eggdrop_t, eggdrop_exec_t) is whats
>>> causing the constraint violation.
>
>>> Also allow the unconfined_r role the eggdrop_t domain:
>
>>> role unconfined_r types eggdrop_t;
>
>>> (you also will need to require "role unconfined_r;")
>
>
>>>> type eggdrop_conf_t;
>>>> files_config_file(eggdrop_conf_t)
>
>>>> corenet_tcp_connect_ircd_port(eggdrop_t)
>>>> corenet_tcp_sendrecv_ircd_port(eggdrop_t)
>
>>>> domain_auto_trans(unconfined_t,eggdrop_exec_t,eggdrop_t)
>
>>> Better use domtrans_pattern() instead of domain_auto_trans. It better
>>> fits the requirements:
>
>>> domtrans_pattern(unconfined_t, eggdrop_exec_t, eggdrop_t)
>
>
>>> so a basic standard template to start is:
>
>>> ----------->8--------------
>
>>> policy_module(eggdrop, 1.0.0)
>
>>> gen_require(`
>>> type unconfined_t;
>>> role unconfined_r;
>>> ')
>
>>> type eggdrop_t;
>>> type eggdrop_exec_t;
>>> application_domain(eggdrop_t, eggdrop_exec_t)
>>> role unconfined_r types eggdrop_t;
>
>>> type eggdrop_etc_t;
>>> files_config_file(eggdrop_etc_t)
>
>>> domtrans_pattern(unconfined_t, eggdrop_exec_t, eggdrop_t
>
>>> -------------8<------------
>
>
>
>
>>>> This is what I get when I try to load this policy module:
>
>
>>>> lrfurtado:~/selinux/eggdrop# make load
>>>> Loading default modules: eggdrop
>>>> /usr/sbin/semodule -i eggdrop.pp
>>>> libsepol.check_assertion_helper: neverallow violated by allow
>>>> unconfined_t eggdrop_t:process { transition };
>>>> libsemanage.semanage_expand_sandbox: Expand module failed
>>>> /usr/sbin/semodule: Failed!
>>>> make: *** [tmp/loaded] Error 1
>>>> lrfurtado:~/selinux/eggdrop#
>
>
>>>> What's the proper way of accomplishing this?
>
>
>
>>>> On 11-03-25 15:24, Dominick Grift wrote:
>>>>> On 03/25/2011 08:16 PM, Luciano Furtado wrote:
>>>>>> Thanks Dominick,
>
>>>>>> I will use this as an exercise on how to create a new policy module. I
>>>>>> hope you guys can tolerate my newbie questions for a while.
>
>>>>> I created some screen casts and put them on youtube that show some of this:
>
>>>>> Write a policy module part 1 to 4 (on fedora):
>
>>>>> part 1: http://www.youtube.com/watch?v=s4EyoW_7riQ
>>>>> part 2: http://www.youtube.com/watch?v=G5gUt1-ttGg
>>>>> part 3: http://www.youtube.com/watch?v=nbFnchVAgYs
>>>>> part 4: http://www.youtube.com/watch?v=rUGBgzTr92A
>
>>>>> Some other examples:
>
>>>>> part 1: http://www.youtube.com/watch?v=sBI50O84NLo
>>>>> part 2: http://www.youtube.com/watch?v=ATTJ5xUKH1E
>>>>> part 3: http://www.youtube.com/watch?v=e3cQNi3bi70
>
>>>>> may or may not be helpful.
>
>>>>>> Best Regards.
>>>>>> Luciano
>
>
>>>>>> On 11-03-25 14:29, Dominick Grift wrote:
>>>>>>> On 03/25/2011 07:09 PM, Luciano Furtado wrote:
>>>>>>>> Hi Group,
>
>>>>>>>> Does eggdrop has a selinux policy module? if so starting on which fedora
>>>>>>>> version?
>
>
>>>>>>> The only reference that i could find to it was:
>
>>>>>>> "You can find a copy of my irssi policy here
>>>>>>> http://pastebin.ca/768256?srch=irssi_exec_t it also includes policy for
>>>>>>> eggdrop and manual pages"
>
>>>>>>> - From my 2008 article
>>>>>>> "http://domg472.blogspot.com/2008/05/how-to-create-integrate-and-rebuild.html";
>
>>>>>>> Unfortunately seems "pastebin.ca" no longer exists. I can no longer
>>>>>>> access the site.
>
>
>>>>>>>> I am looking to get the sources for it , build / install it on my Debian
>>>>>>>> installation which doesn't seem to have a module for it.
>
>
>>>>>>>> Best Regards.
>>>>>>>> Luciano
>
>
>
>
>> On my policy right now I have this which I think would allow eggdrop to
>> sendrecv packet to any host/port combination
>
>> corenet_tcp_sendrecv_all_ports(eggdrop_t)
>
>
>> If wanted to limit eggdrop to talk only to specific host/port would it
>> possible to use iptables to label the packets to to something like
>> eggdrop_packet_t and them add a rule like this.
>
>> corenet_tcp_recvfrom_labeled(eggdrop_t, eggdrop_packet_t)
>
>
>> Is this the right approach to accomplish this.
>
> I am not into the selinux networking controls but dwalsh recently
> published an article that may or may not inspire you:
>
> http://www.linux.com/learn/tutorials/421152-using-selinux-and-iptables-together
>
>
>> My WIP policy is locate at http://lrfurtado.vps.bitfolk.com/eggdrop/
>
> I probably would have done it differently, but if it works; it works.
>
>
>
>
>> Best Regards.
>> Luciano
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