717 lines
18 KiB
C
717 lines
18 KiB
C
/*
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* Copyright (C) 2009-2010 Andreas Steffen
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#define _GNU_SOURCE
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#include <string.h>
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#include <library.h>
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#include <networking/host.h>
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#include "pool_attributes.h"
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#include "pool_usage.h"
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/**
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* global database handle
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*/
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extern database_t *db;
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#define UNITY_NETWORK_LEN 14
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ENUM(value_type_names, VALUE_HEX, VALUE_SUBNET,
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"hex",
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"string",
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"addr",
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"subnet"
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);
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typedef struct attr_info_t attr_info_t;
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struct attr_info_t {
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char* keyword;
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value_type_t value_type;
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configuration_attribute_type_t type;
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configuration_attribute_type_t type_ip6;
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};
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static const attr_info_t attr_info[] = {
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{ "internal_ip4_netmask", VALUE_ADDR, INTERNAL_IP4_NETMASK, 0 },
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{ "internal_ip6_netmask", VALUE_ADDR, INTERNAL_IP6_NETMASK, 0 },
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{ "netmask", VALUE_ADDR, INTERNAL_IP4_NETMASK,
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INTERNAL_IP6_NETMASK },
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{ "internal_ip4_dns", VALUE_ADDR, INTERNAL_IP4_DNS, 0 },
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{ "internal_ip6_dns", VALUE_ADDR, INTERNAL_IP6_DNS, 0 },
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{ "dns", VALUE_ADDR, INTERNAL_IP4_DNS,
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INTERNAL_IP6_DNS },
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{ "internal_ip4_nbns", VALUE_ADDR, INTERNAL_IP4_NBNS, 0 },
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{ "internal_ip6_nbns", VALUE_ADDR, INTERNAL_IP6_NBNS, 0 },
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{ "nbns", VALUE_ADDR, INTERNAL_IP4_NBNS,
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INTERNAL_IP6_NBNS },
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{ "wins", VALUE_ADDR, INTERNAL_IP4_NBNS,
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INTERNAL_IP6_NBNS },
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{ "internal_ip4_dhcp", VALUE_ADDR, INTERNAL_IP4_DHCP, 0 },
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{ "internal_ip6_dhcp", VALUE_ADDR, INTERNAL_IP6_DHCP, 0 },
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{ "dhcp", VALUE_ADDR, INTERNAL_IP4_DHCP,
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INTERNAL_IP6_DHCP },
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{ "internal_ip4_server", VALUE_ADDR, INTERNAL_IP4_SERVER, 0 },
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{ "internal_ip6_server", VALUE_ADDR, INTERNAL_IP6_SERVER, 0 },
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{ "server", VALUE_ADDR, INTERNAL_IP4_SERVER,
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INTERNAL_IP6_SERVER },
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{ "application_version", VALUE_STRING, APPLICATION_VERSION, 0 },
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{ "version", VALUE_STRING, APPLICATION_VERSION, 0 },
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{ "unity_banner", VALUE_STRING, UNITY_BANNER, 0 },
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{ "banner", VALUE_STRING, UNITY_BANNER, 0 },
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{ "unity_def_domain", VALUE_STRING, UNITY_DEF_DOMAIN, 0 },
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{ "unity_splitdns_name", VALUE_STRING, UNITY_SPLITDNS_NAME, 0 },
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{ "unity_split_include", VALUE_SUBNET, UNITY_SPLIT_INCLUDE, 0 },
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{ "unity_split_exclude", VALUE_SUBNET, UNITY_LOCAL_LAN, 0 },
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{ "unity_local_lan", VALUE_SUBNET, UNITY_LOCAL_LAN, 0 },
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};
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/**
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* Determine the type of the attribute and its value
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*/
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static bool parse_attributes(char *name, char *value, value_type_t *value_type,
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configuration_attribute_type_t *type,
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configuration_attribute_type_t *type_ip6,
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chunk_t *blob)
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{
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host_t *addr = NULL, *mask = NULL;
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chunk_t addr_chunk, mask_chunk, blob_next;
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char *text = "", *pos_addr, *pos_mask, *pos_next, *endptr;
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int i;
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switch (*value_type)
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{
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case VALUE_STRING:
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*blob = chunk_create(value, strlen(value));
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*blob = chunk_clone(*blob);
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break;
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case VALUE_HEX:
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*blob = chunk_from_hex(chunk_create(value, strlen(value)), NULL);
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break;
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case VALUE_ADDR:
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addr = host_create_from_string(value, 0);
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if (addr == NULL)
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{
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fprintf(stderr, "invalid IP address: '%s'.\n", value);
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return FALSE;
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}
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addr_chunk = addr->get_address(addr);
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*blob = chunk_clone(addr_chunk);
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break;
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case VALUE_SUBNET:
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*blob = chunk_empty;
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pos_next = value;
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do
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{
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pos_addr = pos_next;
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pos_next = strchr(pos_next, ',');
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if (pos_next)
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{
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*pos_next = '\0';
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pos_next += 1;
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}
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pos_mask = strchr(pos_addr, '/');
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if (pos_mask == NULL)
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{
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fprintf(stderr, "invalid IPv4 subnet: '%s'.\n", pos_addr);
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free(blob->ptr);
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return FALSE;
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}
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*pos_mask = '\0';
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pos_mask += 1;
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addr = host_create_from_string(pos_addr, 0);
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mask = host_create_from_string(pos_mask, 0);
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if (addr == NULL || addr->get_family(addr) != AF_INET ||
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mask == NULL || mask->get_family(addr) != AF_INET)
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{
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fprintf(stderr, "invalid IPv4 subnet: '%s/%s'.\n",
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pos_addr, pos_mask);
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DESTROY_IF(addr);
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DESTROY_IF(mask);
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free(blob->ptr);
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return FALSE;
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}
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addr_chunk = addr->get_address(addr);
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mask_chunk = mask->get_address(mask);
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blob_next = chunk_alloc(blob->len + UNITY_NETWORK_LEN);
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memcpy(blob_next.ptr, blob->ptr, blob->len);
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pos_addr = blob_next.ptr + blob->len;
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memset(pos_addr, 0x00, UNITY_NETWORK_LEN);
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memcpy(pos_addr, addr_chunk.ptr, 4);
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memcpy(pos_addr + 4, mask_chunk.ptr, 4);
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addr->destroy(addr);
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addr = NULL;
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mask->destroy(mask);
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chunk_free(blob);
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*blob = blob_next;
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}
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while (pos_next);
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break;
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case VALUE_NONE:
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*blob = chunk_empty;
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break;
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}
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/* init the attribute type */
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*type = 0;
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*type_ip6 = 0;
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for (i = 0; i < countof(attr_info); i++)
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{
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if (strcaseeq(name, attr_info[i].keyword))
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{
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*type = attr_info[i].type;
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*type_ip6 = attr_info[i].type_ip6;
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if (*value_type == VALUE_NONE)
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{
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*value_type = attr_info[i].value_type;
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return TRUE;
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}
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if (*value_type != attr_info[i].value_type &&
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*value_type != VALUE_HEX)
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{
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switch (attr_info[i].value_type)
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{
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case VALUE_STRING:
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text = "a string";
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break;
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case VALUE_HEX:
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text = "a hex";
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break;
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case VALUE_ADDR:
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text = "an IP address";
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break;
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case VALUE_SUBNET:
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text = "a subnet";
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break;
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case VALUE_NONE:
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text = "no";
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break;
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}
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fprintf(stderr, "the %s attribute requires %s value.\n",
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name, text);
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DESTROY_IF(addr);
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free(blob->ptr);
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return FALSE;
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}
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if (*value_type == VALUE_ADDR)
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{
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*type = (addr->get_family(addr) == AF_INET) ?
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attr_info[i].type : attr_info[i].type_ip6;
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addr->destroy(addr);
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}
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else if (*value_type == VALUE_HEX)
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{
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*value_type = attr_info[i].value_type;
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if (*value_type == VALUE_ADDR)
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{
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if (blob->len == 16)
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{
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*type = attr_info[i].type_ip6;
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}
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else if (blob->len != 4)
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{
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fprintf(stderr, "the %s attribute requires "
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"a valid IP address.\n", name);
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free(blob->ptr);
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return FALSE;
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}
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}
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}
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return TRUE;
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}
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}
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/* clean up */
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DESTROY_IF(addr);
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/* is the attribute type numeric? */
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*type = strtol(name, &endptr, 10);
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if (*endptr != '\0')
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{
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fprintf(stderr, "the %s attribute is not recognized.\n", name);
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free(blob->ptr);
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return FALSE;
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}
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if (*type < 1 || *type > 32767)
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{
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fprintf(stderr, "the attribute type must lie in the range 1..32767.\n");
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free(blob->ptr);
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return FALSE;
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}
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if (*value_type == VALUE_NONE)
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{
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*value_type = VALUE_HEX;
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}
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return TRUE;
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}
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/**
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* Lookup/insert an attribute pool by name
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*/
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static u_int get_attr_pool(char *name)
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{
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enumerator_t *e;
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u_int row = 0;
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/* look for an existing attribute pool in the table */
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e = db->query(db, "SELECT id FROM attribute_pools WHERE name = ?",
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DB_TEXT, name, DB_UINT);
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if (e && e->enumerate(e, &row))
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{
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e->destroy(e);
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return row;
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}
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DESTROY_IF(e);
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/* not found, insert new one */
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if (db->execute(db, &row, "INSERT INTO attribute_pools (name) VALUES (?)",
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DB_TEXT, name) != 1)
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{
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fprintf(stderr, "creating attribute pool '%s' failed.\n", name);
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return 0;
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}
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return row;
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}
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/**
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* Lookup/insert an identity
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*/
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u_int get_identity(identification_t *id)
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{
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enumerator_t *e;
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u_int row;
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/* look for peer identity in the identities table */
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e = db->query(db, "SELECT id FROM identities WHERE type = ? AND data = ?",
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DB_INT, id->get_type(id), DB_BLOB, id->get_encoding(id), DB_UINT);
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if (e && e->enumerate(e, &row))
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{
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e->destroy(e);
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return row;
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}
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DESTROY_IF(e);
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/* not found, insert new one */
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if (db->execute(db, &row, "INSERT INTO identities (type,data) VALUES (?,?)",
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DB_INT, id->get_type(id), DB_BLOB, id->get_encoding(id)) != 1)
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{
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fprintf(stderr, "creating id '%Y' failed.\n", id);
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return 0;
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}
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return row;
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}
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/**
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* ipsec pool --addattr <type> - add attribute entry
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*/
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void add_attr(char *name, char *pool, char *identity,
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char *value, value_type_t value_type)
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{
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configuration_attribute_type_t type, type_ip6;
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u_int pool_id = 0, identity_id = 0;
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char id_pool_str[128] = "";
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chunk_t blob;
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bool success;
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if (pool)
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{
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pool_id = get_attr_pool(pool);
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if (pool_id == 0)
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{
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exit(EXIT_FAILURE);
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}
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if (identity)
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{
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identification_t *id;
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id = identification_create_from_string(identity);
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identity_id = get_identity(id);
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id->destroy(id);
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if (identity_id == 0)
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{
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exit(EXIT_FAILURE);
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}
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snprintf(id_pool_str, sizeof(id_pool_str),
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" for '%s' in pool '%s'", identity, pool);
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}
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else
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{
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snprintf(id_pool_str, sizeof(id_pool_str), " in pool '%s'", pool);
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}
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}
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if (value_type == VALUE_NONE)
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{
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fprintf(stderr, "the value of the %s attribute is missing.\n", name);
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usage();
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}
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if (!parse_attributes(name, value, &value_type, &type, &type_ip6, &blob))
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{
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exit(EXIT_FAILURE);
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}
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success = db->execute(db, NULL,
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"INSERT INTO attributes (identity, pool, type, value) "
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"VALUES (?, ?, ?, ?)", DB_UINT, identity_id, DB_UINT, pool_id,
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DB_INT, type, DB_BLOB, blob) == 1;
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free(blob.ptr);
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if (success)
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{
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printf("added %s attribute (%N)%s.\n", name,
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configuration_attribute_type_names, type, id_pool_str);
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}
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else
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{
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fprintf(stderr, "adding %s attribute (%N)%s failed.\n", name,
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configuration_attribute_type_names, type, id_pool_str);
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}
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}
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/**
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* ipsec pool --delattr <type> - delete attribute entry
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*/
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void del_attr(char *name, char *pool, char *identity,
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char *value, value_type_t value_type)
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{
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configuration_attribute_type_t type, type_ip6, type_db;
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u_int pool_id = 0, identity_id = 0;
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char id_pool_str[128] = "";
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chunk_t blob, blob_db;
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u_int id;
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enumerator_t *query;
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bool found = FALSE;
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if (pool)
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{
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pool_id = get_attr_pool(pool);
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if (pool_id == 0)
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{
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exit(EXIT_FAILURE);
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}
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if (identity)
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{
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identification_t *id;
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id = identification_create_from_string(identity);
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identity_id = get_identity(id);
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id->destroy(id);
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if (identity_id == 0)
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{
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exit(EXIT_FAILURE);
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}
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snprintf(id_pool_str, sizeof(id_pool_str),
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" for '%s' in pool '%s'", identity, pool);
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}
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else
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{
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snprintf(id_pool_str, sizeof(id_pool_str), " in pool '%s'", pool);
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}
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}
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if (!parse_attributes(name, value, &value_type, &type, &type_ip6, &blob))
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{
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exit(EXIT_FAILURE);
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}
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if (blob.len > 0)
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{
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query = db->query(db,
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"SELECT id, type, value FROM attributes "
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"WHERE identity = ? AND pool = ? AND type = ? AND value = ?",
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DB_UINT, identity_id, DB_UINT, pool_id, DB_INT, type,
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DB_BLOB, blob, DB_UINT, DB_INT, DB_BLOB);
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}
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else if (type_ip6 == 0)
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{
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query = db->query(db,
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"SELECT id, type, value FROM attributes "
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"WHERE identity = ? AND pool = ? AND type = ?",
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DB_UINT, identity_id, DB_UINT, pool_id, DB_INT, type,
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DB_UINT, DB_INT, DB_BLOB);
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}
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else
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{
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query = db->query(db,
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"SELECT id, type, value FROM attributes "
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"WHERE identity = ? AND pool = ? AND (type = ? OR type = ?)",
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DB_UINT, identity_id, DB_UINT, pool_id, DB_INT, type,
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DB_INT, type_ip6, DB_UINT, DB_INT, DB_BLOB);
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}
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if (!query)
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{
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fprintf(stderr, "deleting '%s' attribute (%N)%s failed.\n",
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name, configuration_attribute_type_names, type, id_pool_str);
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free(blob.ptr);
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exit(EXIT_FAILURE);
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}
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while (query->enumerate(query, &id, &type_db, &blob_db))
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{
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host_t *server = NULL;
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found = TRUE;
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if (value_type == VALUE_ADDR)
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{
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int family = (type_db == type_ip6) ? AF_INET6 : AF_INET;
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server = host_create_from_chunk(family, blob_db, 0);
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}
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if (db->execute(db, NULL,
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"DELETE FROM attributes WHERE id = ?",
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DB_UINT, id) != 1)
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{
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if (server)
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{
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fprintf(stderr, "deleting %s server %H%s failed\n",
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name, server, id_pool_str);
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server->destroy(server);
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}
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else if (value_type == VALUE_STRING)
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{
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fprintf(stderr, "deleting %s attribute (%N) with value '%.*s'%s failed.\n",
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name, configuration_attribute_type_names, type,
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(int)blob_db.len, blob_db.ptr, id_pool_str);
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}
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else
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{
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fprintf(stderr, "deleting %s attribute (%N) with value %#B%s failed.\n",
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name, configuration_attribute_type_names, type,
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&blob_db, id_pool_str);
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}
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query->destroy(query);
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free(blob.ptr);
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exit(EXIT_FAILURE);
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}
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if (server)
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{
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printf("deleted %s server %H%s\n", name, server, id_pool_str);
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server->destroy(server);
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}
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else if (value_type == VALUE_STRING)
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{
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printf("deleted %s attribute (%N) with value '%.*s'%s.\n",
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name, configuration_attribute_type_names, type,
|
|
(int)blob_db.len, blob_db.ptr, id_pool_str);
|
|
}
|
|
else
|
|
{
|
|
printf("deleted %s attribute (%N) with value %#B%s.\n",
|
|
name, configuration_attribute_type_names, type,
|
|
&blob_db, id_pool_str);
|
|
}
|
|
}
|
|
query->destroy(query);
|
|
|
|
if (!found)
|
|
{
|
|
if (blob.len == 0)
|
|
{
|
|
if (type_ip6 == 0)
|
|
{
|
|
fprintf(stderr, "no %s attribute (%N) was found%s.\n", name,
|
|
configuration_attribute_type_names, type, id_pool_str);
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "no %s attribute%s was found.\n",
|
|
name, id_pool_str);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (value_type == VALUE_ADDR)
|
|
{
|
|
host_t *server = host_create_from_chunk(AF_UNSPEC, blob, 0);
|
|
|
|
fprintf(stderr, "the %s server %H%s was not found.\n", name,
|
|
server, id_pool_str);
|
|
server->destroy(server);
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "the %s attribute (%N) with value '%.*s'%s "
|
|
"was not found.\n", name,
|
|
configuration_attribute_type_names, type,
|
|
(int)blob.len, blob.ptr, id_pool_str);
|
|
}
|
|
}
|
|
}
|
|
free(blob.ptr);
|
|
}
|
|
|
|
/**
|
|
* ipsec pool --statusattr - show all attribute entries
|
|
*/
|
|
void status_attr(bool hexout)
|
|
{
|
|
configuration_attribute_type_t type;
|
|
value_type_t value_type;
|
|
chunk_t value, addr_chunk, mask_chunk, identity_chunk;
|
|
identification_t *identity;
|
|
enumerator_t *enumerator;
|
|
host_t *addr, *mask;
|
|
char type_name[30];
|
|
bool first = TRUE;
|
|
int i, identity_type;
|
|
char *pool_name;
|
|
|
|
/* enumerate over all attributes */
|
|
enumerator = db->query(db,
|
|
"SELECT attributes.type, attribute_pools.name, "
|
|
"identities.type, identities.data, attributes.value "
|
|
"FROM attributes "
|
|
"LEFT OUTER JOIN identities "
|
|
"ON attributes.identity = identities.id "
|
|
"LEFT OUTER JOIN attribute_pools "
|
|
"ON attributes.pool = attribute_pools.id "
|
|
"ORDER BY attributes.type, attribute_pools.name, "
|
|
"identities.type, identities.data, attributes.value",
|
|
DB_INT, DB_TEXT, DB_INT, DB_BLOB, DB_BLOB);
|
|
if (enumerator)
|
|
{
|
|
while (enumerator->enumerate(enumerator, &type,&pool_name,
|
|
&identity_type, &identity_chunk, &value))
|
|
{
|
|
if (first)
|
|
{
|
|
printf(" type description pool "
|
|
" identity value\n");
|
|
first = FALSE;
|
|
}
|
|
snprintf(type_name, sizeof(type_name), "%N",
|
|
configuration_attribute_type_names, type);
|
|
if (type_name[0] == '(')
|
|
{
|
|
type_name[0] = '\0';
|
|
}
|
|
printf("%5d %-20s ",type, type_name);
|
|
|
|
printf(" %-10s ", (pool_name ? pool_name : ""));
|
|
|
|
if (identity_type)
|
|
{
|
|
identity = identification_create_from_encoding(identity_type, identity_chunk);
|
|
printf(" %-20.20Y ", identity);
|
|
identity->destroy(identity);
|
|
}
|
|
else
|
|
{
|
|
printf(" ");
|
|
}
|
|
|
|
value_type = VALUE_HEX;
|
|
if (!hexout)
|
|
{
|
|
for (i = 0; i < countof(attr_info); i++)
|
|
{
|
|
if (type == attr_info[i].type)
|
|
{
|
|
value_type = attr_info[i].value_type;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
switch (value_type)
|
|
{
|
|
case VALUE_ADDR:
|
|
addr = host_create_from_chunk(AF_UNSPEC, value, 0);
|
|
if (addr)
|
|
{
|
|
printf(" %H\n", addr);
|
|
addr->destroy(addr);
|
|
}
|
|
else
|
|
{
|
|
/* value cannot be represented as an IP address */
|
|
printf(" %#B\n", &value);
|
|
}
|
|
break;
|
|
case VALUE_SUBNET:
|
|
if (value.len % UNITY_NETWORK_LEN == 0)
|
|
{
|
|
for (i = 0; i < value.len / UNITY_NETWORK_LEN; i++)
|
|
{
|
|
addr_chunk = chunk_create(value.ptr + i*UNITY_NETWORK_LEN, 4);
|
|
addr = host_create_from_chunk(AF_INET, addr_chunk, 0);
|
|
mask_chunk = chunk_create(addr_chunk.ptr + 4, 4);
|
|
mask = host_create_from_chunk(AF_INET, mask_chunk, 0);
|
|
printf("%s%H/%H", (i > 0) ? "," : " ", addr, mask);
|
|
addr->destroy(addr);
|
|
mask->destroy(mask);
|
|
}
|
|
printf("\n");
|
|
}
|
|
else
|
|
{
|
|
/* value cannot be represented as a list of subnets */
|
|
printf(" %#B\n", &value);
|
|
}
|
|
break;
|
|
case VALUE_STRING:
|
|
printf("\"%.*s\"\n", (int)value.len, value.ptr);
|
|
break;
|
|
case VALUE_HEX:
|
|
default:
|
|
printf(" %#B\n", &value);
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ipsec pool --showattr - show all supported attribute keywords
|
|
*/
|
|
void show_attr(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < countof(attr_info); i++)
|
|
{
|
|
char value_name[10];
|
|
|
|
|
|
snprintf(value_name, sizeof(value_name), "%N",
|
|
value_type_names, attr_info[i].value_type);
|
|
|
|
printf("%-20s --%-6s (%N",
|
|
attr_info[i].keyword, value_name,
|
|
configuration_attribute_type_names, attr_info[i].type);
|
|
|
|
if (attr_info[i].type_ip6)
|
|
{
|
|
printf(", %N)\n",
|
|
configuration_attribute_type_names, attr_info[i].type_ip6);
|
|
}
|
|
else
|
|
{
|
|
printf(")\n");
|
|
}
|
|
}
|
|
}
|