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/*
*
* PPP library with GLib integration
*
* Copyright (C) 2009-2010 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <termios.h>
#include <arpa/inet.h>
#include <glib.h>
#include "gatutil.h"
#include "gatppp.h"
#include "ppp.h"
#define IPCP_SUPPORTED_CODES ((1 << PPPCP_CODE_TYPE_CONFIGURE_REQUEST) | \
(1 << PPPCP_CODE_TYPE_CONFIGURE_ACK) | \
(1 << PPPCP_CODE_TYPE_CONFIGURE_NAK) | \
(1 << PPPCP_CODE_TYPE_CONFIGURE_REJECT) | \
(1 << PPPCP_CODE_TYPE_TERMINATE_REQUEST) | \
(1 << PPPCP_CODE_TYPE_TERMINATE_ACK) | \
(1 << PPPCP_CODE_TYPE_CODE_REJECT))
struct ipcp_data {
guint8 ip_address[4];
guint8 primary_dns[4];
guint8 secondary_dns[4];
guint8 primary_nbns[4];
guint8 secondary_nbns[4];
struct pppcp_data *pppcp;
};
enum ipcp_option_types {
IP_ADDRESSES = 1,
IP_COMPRESSION_PROTO = 2,
IP_ADDRESS = 3,
MOBILE_IPV4 = 4,
PRIMARY_DNS_SERVER = 129,
PRIMARY_NBNS_SERVER = 130,
SECONDARY_DNS_SERVER = 131,
SECONDARY_NBNS_SERVER = 132,
};
static void ipcp_up(struct pppcp_data *pppcp)
{
struct ipcp_data *data = pppcp_get_data(pppcp);
char ip[INET_ADDRSTRLEN];
char dns1[INET_ADDRSTRLEN];
char dns2[INET_ADDRSTRLEN];
struct in_addr addr;
memset(ip, 0, sizeof(ip));
addr.s_addr = __get_unaligned_long(data->ip_address);
inet_ntop(AF_INET, &addr, ip, INET_ADDRSTRLEN);
memset(dns1, 0, sizeof(dns1));
addr.s_addr = __get_unaligned_long(data->primary_dns);
inet_ntop(AF_INET, &addr, dns1, INET_ADDRSTRLEN);
memset(dns2, 0, sizeof(dns2));
addr.s_addr = __get_unaligned_long(data->secondary_dns);
inet_ntop(AF_INET, &addr, dns2, INET_ADDRSTRLEN);
ppp_connect_cb(pppcp_get_ppp(pppcp), G_AT_PPP_CONNECT_SUCCESS,
ip[0] ? ip : NULL,
dns1[0] ? dns1 : NULL,
dns2[0] ? dns2 : NULL);
}
static void ipcp_down(struct pppcp_data *data)
{
g_print("ipcp down\n");
/* re-add what default config options we want negotiated */
}
/*
* Tell the protocol to start the handshake
*/
static void ipcp_started(struct pppcp_data *data)
{
pppcp_signal_up(data);
}
static void ipcp_finished(struct pppcp_data *data)
{
g_print("ipcp finished\n");
}
/*
* Scan the option to see if it is acceptable, unacceptable, or rejected
*/
static guint ipcp_option_scan(struct pppcp_data *pppcp,
struct ppp_option *option)
{
switch (option->type) {
case IP_ADDRESS:
case PRIMARY_DNS_SERVER:
case PRIMARY_NBNS_SERVER:
case SECONDARY_DNS_SERVER:
case SECONDARY_NBNS_SERVER:
return OPTION_ACCEPT;
default:
g_printerr("Unknown ipcp option type %d\n", option->type);
return OPTION_REJECT;
}
}
/*
* act on an acceptable option
*/
static void ipcp_option_process(struct pppcp_data *pppcp,
struct ppp_option *option)
{
struct ipcp_data *ipcp = pppcp_get_data(pppcp);
switch (option->type) {
case IP_ADDRESS:
memcpy(ipcp->ip_address, option->data, 4);
break;
case PRIMARY_DNS_SERVER:
memcpy(ipcp->primary_dns, option->data, 4);
break;
case PRIMARY_NBNS_SERVER:
memcpy(ipcp->primary_nbns, option->data, 4);
break;
case SECONDARY_DNS_SERVER:
memcpy(ipcp->secondary_dns, option->data, 4);
break;
case SECONDARY_NBNS_SERVER:
memcpy(ipcp->secondary_nbns, option->data, 4);
break;
default:
g_printerr("Unable to process unknown option %d\n", option->type);
break;
}
}
struct pppcp_action ipcp_action = {
.this_layer_up = ipcp_up,
.this_layer_down = ipcp_down,
.this_layer_started = ipcp_started,
.this_layer_finished = ipcp_finished,
.option_scan = ipcp_option_scan,
.option_process = ipcp_option_process,
};
static const char *ipcp_option_strings[256] = {
[IP_ADDRESSES] = "IP-Addresses (deprecated)",
[IP_COMPRESSION_PROTO] = "IP-Compression-Protocol",
[IP_ADDRESS] = "IP-Address",
[MOBILE_IPV4] = "Mobile-IPv4",
[PRIMARY_DNS_SERVER] = "Primary DNS Server Address",
[PRIMARY_NBNS_SERVER] = "Primary NBNS Server Address",
[SECONDARY_DNS_SERVER] = "Secondary DNS Server Address",
[SECONDARY_NBNS_SERVER] = "Secondary NBNS Server Address",
};
struct pppcp_data *ipcp_new(GAtPPP *ppp)
{
struct ipcp_data *data;
struct pppcp_data *pppcp;
struct ppp_option *ipcp_option;
data = g_try_malloc0(sizeof(*data));
if (!data)
return NULL;
pppcp = pppcp_new(ppp, IPCP_PROTO);
if (!pppcp) {
g_printerr("Failed to allocate PPPCP struct\n");
g_free(data);
return NULL;
}
pppcp_set_option_strings(pppcp, ipcp_option_strings);
pppcp_set_prefix(pppcp, "ipcp");
pppcp_set_valid_codes(pppcp, IPCP_SUPPORTED_CODES);
pppcp_set_data(pppcp, data);
/* set the actions */
pppcp->action = &ipcp_action;
/* add the default config options */
ipcp_option = g_try_malloc0(6);
if (!ipcp_option) {
pppcp_free(pppcp);
g_free(data);
return NULL;
}
ipcp_option->type = IP_ADDRESS;
ipcp_option->length= 6;
pppcp_add_config_option(pppcp, ipcp_option);
return pppcp;
}
void ipcp_free(struct pppcp_data *data)
{
struct ipcp_data *ipcp = pppcp_get_data(data);
g_free(ipcp);
pppcp_free(data);
}
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