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#!/usr/bin/python
from __future__ import print_function
import sys
import os
import json
import argparse
TESTS_PATH = os.path.dirname(os.path.abspath(__file__))
sys.path.insert(0, os.path.join(TESTS_PATH, '../../py/'))
from nftables import Nftables
# Change working directory to repository root
os.chdir(TESTS_PATH + "/../..")
parser = argparse.ArgumentParser(description='Run JSON echo tests')
parser.add_argument('-H', '--host', action='store_true',
help='Run tests against installed libnftables.so.1')
parser.add_argument('-l', '--library', default=None,
help='Path to libntables.so, overrides --host')
args = parser.parse_args()
check_lib_path = True
if args.library is None:
if args.host:
args.library = 'libnftables.so.1'
check_lib_path = False
else:
args.library = 'src/.libs/libnftables.so.1'
if check_lib_path and not os.path.exists(args.library):
print("Library not found at '%s'." % args.library)
sys.exit(1)
nftables = Nftables(sofile = args.library)
nftables.set_echo_output(True)
# various commands to work with
flush_ruleset = { "flush": { "ruleset": None } }
list_ruleset = { "list": { "ruleset": None } }
add_table = { "add": {
"table": {
"family": "inet",
"name": "t",
}
}}
add_chain = { "add": {
"chain": {
"family": "inet",
"table": "t",
"name": "c"
}
}}
add_set = { "add": {
"set": {
"family": "inet",
"table": "t",
"name": "s",
"type": "inet_service"
}
}}
add_rule = { "add": {
"rule": {
"family": "inet",
"table": "t",
"chain": "c",
"expr": [ { "accept": None } ]
}
}}
add_counter = { "add": {
"counter": {
"family": "inet",
"table": "t",
"name": "c"
}
}}
add_quota = { "add": {
"quota": {
"family": "inet",
"table": "t",
"name": "q",
"bytes": 65536
}
}}
# helper functions
def exit_err(msg):
print("Error: %s" %msg, file=sys.stderr)
sys.exit(1)
def exit_dump(e, obj):
msg = "{}\n".format(e)
msg += "Output was:\n"
msg += json.dumps(obj, sort_keys = True, indent = 4, separators = (',', ': '))
exit_err(msg)
def do_flush():
rc, out, err = nftables.json_cmd({ "nftables": [flush_ruleset] })
if rc != 0:
exit_err("flush ruleset failed: {}".format(err))
def do_command(cmd):
if not type(cmd) is list:
cmd = [cmd]
rc, out, err = nftables.json_cmd({ "nftables": cmd })
if rc != 0:
exit_err("command failed: {}".format(err))
return out
def do_list_ruleset():
echo = nftables.get_echo_output()
nftables.set_echo_output(False)
out = do_command(list_ruleset)
nftables.set_echo_output(echo)
return out
def get_handle(output, search):
try:
for item in output["nftables"]:
if "add" in item:
data = item["add"]
elif "insert" in item:
data = item["insert"]
else:
data = item
k = list(search.keys())[0]
if not k in data:
continue
found = True
for key in list(search[k].keys()):
if key == "handle":
continue
if not key in data[k] or search[k][key] != data[k][key]:
found = False
break
if not found:
continue
return data[k]["handle"]
except Exception as e:
exit_dump(e, output)
# single commands first
do_flush()
print("Adding table t")
out = do_command(add_table)
handle = get_handle(out, add_table["add"])
out = do_list_ruleset()
handle_cmp = get_handle(out, add_table["add"])
if handle != handle_cmp:
exit_err("handle mismatch!")
add_table["add"]["table"]["handle"] = handle
print("Adding chain c")
out = do_command(add_chain)
handle = get_handle(out, add_chain["add"])
out = do_list_ruleset()
handle_cmp = get_handle(out, add_chain["add"])
if handle != handle_cmp:
exit_err("handle mismatch!")
add_chain["add"]["chain"]["handle"] = handle
print("Adding set s")
out = do_command(add_set)
handle = get_handle(out, add_set["add"])
out = do_list_ruleset()
handle_cmp = get_handle(out, add_set["add"])
if handle != handle_cmp:
exit_err("handle mismatch!")
add_set["add"]["set"]["handle"] = handle
print("Adding rule")
out = do_command(add_rule)
handle = get_handle(out, add_rule["add"])
out = do_list_ruleset()
handle_cmp = get_handle(out, add_rule["add"])
if handle != handle_cmp:
exit_err("handle mismatch!")
add_rule["add"]["rule"]["handle"] = handle
print("Adding counter")
out = do_command(add_counter)
handle = get_handle(out, add_counter["add"])
out = do_list_ruleset()
handle_cmp = get_handle(out, add_counter["add"])
if handle != handle_cmp:
exit_err("handle mismatch!")
add_counter["add"]["counter"]["handle"] = handle
print("Adding quota")
out = do_command(add_quota)
handle = get_handle(out, add_quota["add"])
out = do_list_ruleset()
handle_cmp = get_handle(out, add_quota["add"])
if handle != handle_cmp:
exit_err("handle mismatch!")
add_quota["add"]["quota"]["handle"] = handle
# adjust names and add items again
# Note: Handles are per-table, hence add renamed objects to first table
# to make sure assigned handle differs from first run.
add_table["add"]["table"]["name"] = "t2"
add_chain["add"]["chain"]["name"] = "c2"
add_set["add"]["set"]["name"] = "s2"
add_counter["add"]["counter"]["name"] = "c2"
add_quota["add"]["quota"]["name"] = "q2"
print("Adding table t2")
out = do_command(add_table)
handle = get_handle(out, add_table["add"])
if handle == add_table["add"]["table"]["handle"]:
exit_err("handle not changed in re-added table!")
print("Adding chain c2")
out = do_command(add_chain)
handle = get_handle(out, add_chain["add"])
if handle == add_chain["add"]["chain"]["handle"]:
exit_err("handle not changed in re-added chain!")
print("Adding set s2")
out = do_command(add_set)
handle = get_handle(out, add_set["add"])
if handle == add_set["add"]["set"]["handle"]:
exit_err("handle not changed in re-added set!")
print("Adding rule again")
out = do_command(add_rule)
handle = get_handle(out, add_rule["add"])
if handle == add_rule["add"]["rule"]["handle"]:
exit_err("handle not changed in re-added rule!")
print("Adding counter c2")
out = do_command(add_counter)
handle = get_handle(out, add_counter["add"])
if handle == add_counter["add"]["counter"]["handle"]:
exit_err("handle not changed in re-added counter!")
print("Adding quota q2")
out = do_command(add_quota)
handle = get_handle(out, add_quota["add"])
if handle == add_quota["add"]["quota"]["handle"]:
exit_err("handle not changed in re-added quota!")
# now multiple commands
# reset name changes again
add_table["add"]["table"]["name"] = "t"
add_chain["add"]["chain"]["name"] = "c"
add_set["add"]["set"]["name"] = "s"
add_counter["add"]["counter"]["name"] = "c"
add_quota["add"]["quota"]["name"] = "q"
do_flush()
print("doing multi add")
add_multi = [ add_table, add_chain, add_set, add_rule ]
out = do_command(add_multi)
thandle = get_handle(out, add_table["add"])
chandle = get_handle(out, add_chain["add"])
shandle = get_handle(out, add_set["add"])
rhandle = get_handle(out, add_rule["add"])
out = do_list_ruleset()
if thandle != get_handle(out, add_table["add"]):
exit_err("table handle mismatch!")
if chandle != get_handle(out, add_chain["add"]):
exit_err("chain handle mismatch!")
if shandle != get_handle(out, add_set["add"]):
exit_err("set handle mismatch!")
if rhandle != get_handle(out, add_rule["add"]):
exit_err("rule handle mismatch!")
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