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/*
* Copyright (C) 2014 Martin Willi
* Copyright (C) 2014 revosec AG
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <errno.h>
#include "command.h"
#include <collections/hashtable.h>
/**
* Free hashtable with contained strings
*/
static void free_hashtable(hashtable_t *hashtable)
{
enumerator_t *enumerator;
char *str;
enumerator = hashtable->create_enumerator(hashtable);
while (enumerator->enumerate(enumerator, NULL, &str))
{
free(str);
}
enumerator->destroy(enumerator);
hashtable->destroy(hashtable);
}
CALLBACK(policy_values, int,
hashtable_t *pol, vici_res_t *res, char *name, void *value, int len)
{
chunk_t chunk;
char *str;
chunk = chunk_create(value, len);
if (chunk_printable(chunk, NULL, ' '))
{
if (asprintf(&str, "%.*s", len, value) >= 0)
{
free(pol->put(pol, name, str));
}
}
return 0;
}
CALLBACK(policy_list, int,
hashtable_t *pol, vici_res_t *res, char *name, void *value, int len)
{
chunk_t chunk;
char *str;
chunk = chunk_create(value, len);
if (chunk_printable(chunk, NULL, ' '))
{
str = pol->get(pol, name);
if (asprintf(&str, "%s%s%.*s",
str ?: "", str ? " " : "", len, value) >= 0)
{
free(pol->put(pol, name, str));
}
}
return 0;
}
CALLBACK(policies, int,
void *null, vici_res_t *res, char *name)
{
hashtable_t *pol;
int ret;
pol = hashtable_create(hashtable_hash_str, hashtable_equals_str, 1);
ret = vici_parse_cb(res, NULL, policy_values, policy_list, pol);
printf("%s, %s\n", name, pol->get(pol, "mode"));
printf(" local: %s\n", pol->get(pol, "local-ts"));
printf(" remote: %s\n", pol->get(pol, "remote-ts"));
free_hashtable(pol);
return ret;
}
CALLBACK(list_cb, void,
command_format_options_t *format, char *name, vici_res_t *res)
{
if (*format & COMMAND_FORMAT_RAW)
{
vici_dump(res, "list-policy event", *format & COMMAND_FORMAT_PRETTY,
stdout);
}
else
{
if (vici_parse_cb(res, policies, NULL, NULL, NULL) != 0)
{
fprintf(stderr, "parsing policy event failed: %s\n", strerror(errno));
}
}
}
static int list_pols(vici_conn_t *conn)
{
vici_req_t *req;
vici_res_t *res;
bool trap = FALSE, drop = FALSE, pass = FALSE;
command_format_options_t format = COMMAND_FORMAT_NONE;
char *arg, *child = NULL;
while (TRUE)
{
switch (command_getopt(&arg))
{
case 'h':
return command_usage(NULL);
case 'c':
child = arg;
continue;
case 't':
trap = TRUE;
continue;
case 'd':
drop = TRUE;
continue;
case 'p':
pass = TRUE;
continue;
case 'P':
format |= COMMAND_FORMAT_PRETTY;
/* fall through to raw */
case 'r':
format |= COMMAND_FORMAT_RAW;
continue;
case EOF:
break;
default:
return command_usage("invalid --list-pols option");
}
break;
}
if (!trap && !drop && !pass)
{
trap = drop = pass = TRUE;
}
if (vici_register(conn, "list-policy", list_cb, &format) != 0)
{
fprintf(stderr, "registering for policies failed: %s\n",
strerror(errno));
return errno;
}
req = vici_begin("list-policies");
if (child)
{
vici_add_key_valuef(req, "child", "%s", child);
}
if (trap)
{
vici_add_key_valuef(req, "trap", "yes");
}
if (drop)
{
vici_add_key_valuef(req, "drop", "yes");
}
if (pass)
{
vici_add_key_valuef(req, "pass", "yes");
}
res = vici_submit(req, conn);
if (!res)
{
fprintf(stderr, "list-policies request failed: %s\n", strerror(errno));
return errno;
}
if (format & COMMAND_FORMAT_RAW)
{
vici_dump(res, "list-policies reply", format & COMMAND_FORMAT_PRETTY, stdout);
}
vici_free_res(res);
return 0;
}
/**
* Register the command.
*/
static void __attribute__ ((constructor))reg()
{
command_register((command_t) {
list_pols, 'P', "list-pols", "list currently installed policies",
{"[--child <name>] [--trap] [--drop] [--pass] [--raw|--pretty]"},
{
{"help", 'h', 0, "show usage information"},
{"child", 'c', 1, "filter policies by CHILD_SA config name"},
{"trap", 't', 0, "list trap policies"},
{"drop", 'd', 0, "list drop policies"},
{"pass", 'p', 0, "list bypass policies"},
{"raw", 'r', 0, "dump raw response message"},
{"pretty", 'P', 0, "dump raw response message in pretty print"},
}
});
}
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