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add command line arguments support, and mls/mcs support

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This commit is contained in:
Chris PeBenito 2006-05-25 14:02:41 +00:00
parent 29a0519186
commit d6d8b7037d
1 changed files with 64 additions and 18 deletions
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82
refpolicy/support/gennetfilter.py
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@ -1,13 +1,14 @@
import re
import sys,getopt,re
NETPORT = re.compile("^network_port\(\s*\w+\s*(\s*,\s*\w+\s*,\s*\w+\s*,\s*\w+\s*)+\s*\)\s*$")
DEFAULT_PACKET = "packet_t"
DEFAULT_MCS = "s0"
DEFAULT_MLS = "s0"
PACKET_INPUT = "_server_packet_t"
PACKET_OUTPUT = "_client_packet_t"
packets = []
class Port:
def __init__(self, proto, num, mls_sens, mcs_cats=""):
# protocol of the port
@ -21,10 +22,7 @@ class Port:
# MCS categories
# not currently supported, so we always get s0
if mcs_cats == "":
self.mcs_cats = "s0"
else
self.mcs_cats = "s0:"+mcs_cats
self.mcs_cats = DEFAULT_MCS
class Packet:
def __init__(self, prefix, ports):
@ -34,25 +32,50 @@ class Packet:
# A list of Ports
self.ports = ports
def print_input_rules():
print "-A selinux_new_input -j SECMARK --selctx system_u:object_r:"+DEFAULT_PACKET
def print_input_rules(packets,mls,mcs):
line = "-A selinux_new_input -j SECMARK --selctx system_u:object_r:"+DEFAULT_PACKET
if mls:
line += ":"+DEFAULT_MLS
elif mcs:
line += ":"+DEFAULT_MCS
print line
for i in packets:
for j in i.ports:
output_line="-A selinux_new_input -p "+j.proto+" --dport "+j.num+" -j SECMARK --selctx system_u:object_r:"+i.prefix+PACKET_INPUT
line="-A selinux_new_input -p "+j.proto+" --dport "+j.num+" -j SECMARK --selctx system_u:object_r:"+i.prefix+PACKET_INPUT
if mls:
line += ":"+j.mls_sens
elif mcs:
line += ":"+j.mcs_cats
print line
print "-A selinux_new_input -j CONNSECMARK --save"
print "-A selinux_new_input -j RETURN"
def print_output_rules():
print "-A selinux_new_output -j SECMARK --selctx system_u:object_r:"+DEFAULT_PACKET
def print_output_rules(packets,mls,mcs):
line = "-A selinux_new_output -j SECMARK --selctx system_u:object_r:"+DEFAULT_PACKET
if mls:
line += ":"+DEFAULT_MLS
elif mcs:
line += ":"+DEFAULT_MCS
print line
for i in packets:
for j in i.ports:
print "-A selinux_new_output -p "+j.proto+" --dport "+j.num+" -j SECMARK --selctx system_u:object_r:"+i.prefix+PACKET_OUTPUT
line = "-A selinux_new_output -p "+j.proto+" --dport "+j.num+" -j SECMARK --selctx system_u:object_r:"+i.prefix+PACKET_OUTPUT
if mls:
line += ":"+j.mls_sens
elif mcs:
line += ":"+j.mcs_cats
print line
print "-A selinux_new_output -j CONNSECMARK --save"
print "-A selinux_new_output -j RETURN"
def parse_corenet(file_name):
packets = []
corenet_te_in = open(file_name, "r")
while True:
@ -80,7 +103,9 @@ def parse_corenet(file_name):
corenet_te_in.close()
def write_netfilter_config():
return packets
def write_netfilter_config(packets,mls,mcs):
print "*mangle"
print ":PREROUTING ACCEPT [0:0]"
print ":INPUT ACCEPT [0:0]"
@ -97,9 +122,30 @@ def write_netfilter_config():
print "-A selinux_input -m state --state RELATED,ESTABLISHED -j CONNSECMARK --restore"
print "-A selinux_output -m state --state NEW -j selinux_new_output"
print "-A selinux_output -m state --state RELATED,ESTABLISHED -j CONNSECMARK --restore"
print_input_rules()
print_output_rules()
print_input_rules(packets,mls,mcs)
print_output_rules(packets,mls,mcs)
print "COMMIT"
parse_corenet("policy/modules/kernel/corenetwork.te.in")
write_netfilter_config()
mls = False
mcs = False
try:
opts, paths = getopt.getopt(sys.argv[1:],'mc',['mls','mcs'])
except getopt.GetoptError, error:
print "Invalid options."
sys.exit(1)
for o, a in opts:
if o in ("-c","--mcs"):
mcs = True
if o in ("-m","--mls"):
mls = True
if len(paths) == 0:
sys.stderr.write("Need a path for corenetwork.te.in!\n")
sys.exit(1)
elif len(paths) > 1:
sys.stderr.write("Ignoring extra specified paths\n")
packets=parse_corenet(paths[0])
write_netfilter_config(packets,mls,mcs)