#include <config.h>
#endif
-#define _GNU_SOURCE
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <glib.h>
+#include "../src/connman.h"
+#include "../src/shared/arp.h"
#include "gdhcp.h"
#include "common.h"
-#include "ipv4ll.h"
#define DISCOVER_TIMEOUT 5
#define DISCOVER_RETRIES 6
REBOOTING,
REQUESTING,
BOUND,
+ DECLINED,
RENEWING,
REBINDING,
RELEASED,
GList *request_list;
GHashTable *code_value_hash;
GHashTable *send_value_hash;
+ GHashTable *secs_bcast_hash;
GDHCPClientEventFunc lease_available_cb;
gpointer lease_available_data;
GDHCPClientEventFunc ipv4ll_available_cb;
* versa. In the receiving side we then find out what kind of packet
* the server can send.
*/
+ dhcp_client->request_bcast = dhcp_client->retry_times % 2;
+
+ if (dhcp_client->request_bcast)
+ g_hash_table_add(dhcp_client->secs_bcast_hash,
+ GINT_TO_POINTER(packet.secs));
+
return dhcp_send_raw_packet(&packet, INADDR_ANY, CLIENT_PORT,
INADDR_BROADCAST, SERVER_PORT,
MAC_BCAST_ADDR, dhcp_client->ifindex,
- dhcp_client->retry_times % 2);
+ dhcp_client->request_bcast);
+}
+
+int g_dhcp_client_decline(GDHCPClient *dhcp_client, uint32_t requested)
+{
+ struct dhcp_packet packet;
+
+ dhcp_client->state = DECLINED;
+ dhcp_client->retry_times = 0;
+
+ debug(dhcp_client, "sending DHCP decline");
+
+ init_packet(dhcp_client, &packet, DHCPDECLINE);
+
+ packet.xid = dhcp_client->xid;
+ packet.secs = dhcp_attempt_secs(dhcp_client);
+
+ if (requested)
+ dhcp_add_option_uint32(&packet, DHCP_REQUESTED_IP, requested);
+
+ add_send_options(dhcp_client, &packet);
+
+ return dhcp_send_raw_packet(&packet, INADDR_ANY, CLIENT_PORT,
+ INADDR_BROADCAST, SERVER_PORT, MAC_BCAST_ADDR,
+ dhcp_client->ifindex, true);
}
static int send_request(GDHCPClient *dhcp_client)
if (dhcp_client->state == RENEWING)
return dhcp_send_kernel_packet(&packet,
dhcp_client->requested_ip, CLIENT_PORT,
- dhcp_client->server_ip, SERVER_PORT);
+ dhcp_client->server_ip, SERVER_PORT,
+ dhcp_client->interface);
return dhcp_send_raw_packet(&packet, INADDR_ANY, CLIENT_PORT,
INADDR_BROADCAST, SERVER_PORT,
debug(dhcp_client, "sending DHCP release request");
init_packet(dhcp_client, &packet, DHCPRELEASE);
- dhcp_get_random(&rand);
+ __connman_util_get_random(&rand);
packet.xid = rand;
packet.ciaddr = htonl(ciaddr);
dhcp_add_option_uint32(&packet, DHCP_SERVER_ID, server);
return dhcp_send_kernel_packet(&packet, ciaddr, CLIENT_PORT,
- server, SERVER_PORT);
+ server, SERVER_PORT,
+ dhcp_client->interface);
}
static gboolean ipv4ll_probe_timeout(gpointer dhcp_data);
/* if requested_ip is not valid, pick a new address*/
if (dhcp_client->requested_ip == 0) {
debug(dhcp_client, "pick a new random address");
- dhcp_client->requested_ip = ipv4ll_random_ip();
+ dhcp_client->requested_ip = arp_random_ip();
}
debug(dhcp_client, "sending IPV4LL probe request");
dhcp_client->state = IPV4LL_PROBE;
switch_listening_mode(dhcp_client, L_ARP);
}
- ipv4ll_send_arp_packet(dhcp_client->mac_address, 0,
+ arp_send_packet(dhcp_client->mac_address, 0,
dhcp_client->requested_ip, dhcp_client->ifindex);
if (dhcp_client->retry_times < PROBE_NUM) {
/*add a random timeout in range of PROBE_MIN to PROBE_MAX*/
- timeout = ipv4ll_random_delay_ms(PROBE_MAX-PROBE_MIN);
+ timeout = __connman_util_random_delay_ms(PROBE_MAX-PROBE_MIN);
timeout += PROBE_MIN*1000;
} else
timeout = (ANNOUNCE_WAIT * 1000);
debug(dhcp_client, "sending IPV4LL announce request");
- ipv4ll_send_arp_packet(dhcp_client->mac_address,
+ arp_send_packet(dhcp_client->mac_address,
dhcp_client->requested_ip,
dhcp_client->requested_ip,
dhcp_client->ifindex);
return TRUE;
}
-static void get_interface_mac_address(int index, uint8_t *mac_address)
-{
- struct ifreq ifr;
- int sk, err;
-
- sk = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
- if (sk < 0) {
- perror("Open socket error");
- return;
- }
-
- memset(&ifr, 0, sizeof(ifr));
- ifr.ifr_ifindex = index;
-
- err = ioctl(sk, SIOCGIFNAME, &ifr);
- if (err < 0) {
- perror("Get interface name error");
- goto done;
- }
-
- err = ioctl(sk, SIOCGIFHWADDR, &ifr);
- if (err < 0) {
- perror("Get mac address error");
- goto done;
- }
-
- memcpy(mac_address, ifr.ifr_hwaddr.sa_data, 6);
-
-done:
- close(sk);
-}
-
void g_dhcpv6_client_set_retransmit(GDHCPClient *dhcp_client)
{
if (!dhcp_client)
(*duid)[0] = 0;
(*duid)[1] = 1;
- get_interface_mac_address(index, &(*duid)[2 + 2 + 4]);
+ __connman_inet_get_interface_mac_address(index, &(*duid)[2 + 2 + 4]);
(*duid)[2] = 0;
(*duid)[3] = type;
duid_time = time(NULL) - DUID_TIME_EPOCH;
(*duid)[0] = 0;
(*duid)[1] = 3;
- get_interface_mac_address(index, &(*duid)[2 + 2]);
+ __connman_inet_get_interface_mac_address(index, &(*duid)[2 + 2]);
(*duid)[2] = 0;
(*duid)[3] = type;
break;
{
uint8_t buf[6];
- get_interface_mac_address(index, buf);
+ __connman_inet_get_interface_mac_address(index, buf);
memcpy(iaid, &buf[2], 4);
dhcp_client->iaid = iaid[0] << 24 |
goto error;
}
- get_interface_mac_address(ifindex, dhcp_client->mac_address);
+ __connman_inet_get_interface_mac_address(ifindex, dhcp_client->mac_address);
dhcp_client->listener_sockfd = -1;
dhcp_client->listen_mode = L_NONE;
g_direct_equal, NULL, remove_option_value);
dhcp_client->send_value_hash = g_hash_table_new_full(g_direct_hash,
g_direct_equal, NULL, g_free);
+ dhcp_client->secs_bcast_hash = g_hash_table_new(g_direct_hash,
+ g_direct_equal);
dhcp_client->request_list = NULL;
dhcp_client->require_list = NULL;
dhcp_client->duid = NULL;
.filter = (struct sock_filter *) filter_instr,
};
- fd = socket(PF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC, htons(ETH_P_IP));
+ fd = socket(PF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
if (fd < 0)
return -errno;
dhcp_client->retry_times = 0;
dhcp_client->requested_ip = 0;
- dhcp_client->requested_ip = ipv4ll_random_ip();
+ dhcp_client->requested_ip = arp_random_ip();
/*first wait a random delay to avoid storm of arp request on boot*/
- timeout = ipv4ll_random_delay_ms(PROBE_WAIT);
+ timeout = __connman_util_random_delay_ms(PROBE_WAIT);
dhcp_client->retry_times++;
dhcp_client->timeout = g_timeout_add_full(G_PRIORITY_HIGH,
uint32_t ip_requested;
int source_conflict;
int target_conflict;
+ guint timeout_ms;
memset(&arp, 0, sizeof(arp));
bytes = read(dhcp_client->listener_sockfd, &arp, sizeof(arp));
arp.arp_op != htons(ARPOP_REQUEST))
return -EINVAL;
+ if (memcmp(arp.arp_sha, dhcp_client->mac_address, ETH_ALEN) == 0)
+ return 0;
+
ip_requested = htonl(dhcp_client->requested_ip);
source_conflict = !memcmp(arp.arp_spa, &ip_requested,
sizeof(ip_requested));
ipv4ll_stop(dhcp_client);
- if (dhcp_client->conflicts < MAX_CONFLICTS) {
- /*restart whole state machine*/
- dhcp_client->retry_times++;
- dhcp_client->timeout =
- g_timeout_add_full(G_PRIORITY_HIGH,
- ipv4ll_random_delay_ms(PROBE_WAIT),
- send_probe_packet,
- dhcp_client,
- NULL);
- }
- /* Here we got a lot of conflicts, RFC3927 states that we have
+ /* If we got a lot of conflicts, RFC3927 states that we have
* to wait RATE_LIMIT_INTERVAL before retrying,
- * but we just report failure.
*/
- else if (dhcp_client->no_lease_cb)
- dhcp_client->no_lease_cb(dhcp_client,
- dhcp_client->no_lease_data);
+ if (dhcp_client->conflicts < MAX_CONFLICTS)
+ timeout_ms = __connman_util_random_delay_ms(PROBE_WAIT);
+ else
+ timeout_ms = RATE_LIMIT_INTERVAL * 1000;
+ dhcp_client->retry_times++;
+ dhcp_client->timeout =
+ g_timeout_add_full(G_PRIORITY_HIGH,
+ timeout_ms,
+ send_probe_packet,
+ dhcp_client,
+ NULL);
return 0;
}
return FALSE;
}
+static void listener_watch_destroy(gpointer user_data)
+{
+ GDHCPClient *dhcp_client = user_data;
+ g_dhcp_client_unref(dhcp_client);
+}
+
static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
gpointer user_data);
dhcp_client->interface,
AF_INET);
} else if (listen_mode == L_ARP)
- listener_sockfd = ipv4ll_arp_socket(dhcp_client->ifindex);
+ listener_sockfd = arp_socket(dhcp_client->ifindex);
else
return -EIO;
dhcp_client->listener_watch =
g_io_add_watch_full(listener_channel, G_PRIORITY_HIGH,
G_IO_IN | G_IO_NVAL | G_IO_ERR | G_IO_HUP,
- listener_event, dhcp_client,
- NULL);
+ listener_event, g_dhcp_client_ref(dhcp_client),
+ listener_watch_destroy);
g_io_channel_unref(listener_channel);
return 0;
NULL);
}
-static uint32_t get_lease(struct dhcp_packet *packet)
+static uint32_t get_lease(struct dhcp_packet *packet, uint16_t packet_len)
{
uint8_t *option;
uint32_t lease_seconds;
- option = dhcp_get_option(packet, DHCP_LEASE_TIME);
+ option = dhcp_get_option(packet, packet_len, DHCP_LEASE_TIME);
if (!option)
return 3600;
lease_seconds = get_be32(option);
- /* paranoia: must not be prone to overflows */
- lease_seconds &= 0x0fffffff;
+
if (lease_seconds < 10)
lease_seconds = 10;
switch_listening_mode(dhcp_client, L2);
send_request(dhcp_client);
- if (dhcp_client->t2_timeout> 0)
+ if (dhcp_client->t2_timeout> 0) {
g_source_remove(dhcp_client->t2_timeout);
+ dhcp_client->t2_timeout = 0;
+ }
/*recalculate remaining rebind time*/
dhcp_client->T2 >>= 1;
if (dhcp_client->T2 > 60) {
- dhcp_get_random(&rand);
+ __connman_util_get_random(&rand);
dhcp_client->t2_timeout =
g_timeout_add_full(G_PRIORITY_HIGH,
dhcp_client->T2 * 1000 + (rand % 2000) - 1000,
dhcp_client->T1 >>= 1;
if (dhcp_client->T1 > 60) {
- dhcp_get_random(&rand);
+ __connman_util_get_random(&rand);
dhcp_client->t1_timeout = g_timeout_add_full(G_PRIORITY_HIGH,
dhcp_client->T1 * 1000 + (rand % 2000) - 1000,
continue_renew,
return g_strdup(inet_ntoa(addr));
}
+/* get a rough idea of how long an option will be */
+static const uint8_t len_of_option_as_string[] = {
+ [OPTION_IP] = sizeof("255.255.255.255 "),
+ [OPTION_STRING] = 1,
+ [OPTION_U8] = sizeof("255 "),
+ [OPTION_U16] = sizeof("65535 "),
+ [OPTION_U32] = sizeof("4294967295 "),
+};
+
+static int sprint_nip(char *dest, const char *pre, const uint8_t *ip)
+{
+ return sprintf(dest, "%s%u.%u.%u.%u", pre, ip[0], ip[1], ip[2], ip[3]);
+}
+
+/* Create "opt_value1 option_value2 ..." string */
+static char *malloc_option_value_string(uint8_t *option, GDHCPOptionType type)
+{
+ unsigned upper_length;
+ int len, optlen;
+ char *dest, *ret;
+
+ len = option[OPT_LEN - OPT_DATA];
+ type &= OPTION_TYPE_MASK;
+ optlen = dhcp_option_lengths[type];
+ if (optlen == 0)
+ return NULL;
+ upper_length = len_of_option_as_string[type] *
+ ((unsigned)len / (unsigned)optlen);
+ dest = ret = g_malloc(upper_length + 1);
+ if (!ret)
+ return NULL;
+
+ while (len >= optlen) {
+ switch (type) {
+ case OPTION_IP:
+ dest += sprint_nip(dest, "", option);
+ break;
+ case OPTION_U16: {
+ uint16_t val_u16 = get_be16(option);
+ dest += sprintf(dest, "%u", val_u16);
+ break;
+ }
+ case OPTION_U32: {
+ uint32_t val_u32 = get_be32(option);
+ dest += sprintf(dest, "%u", val_u32);
+ break;
+ }
+ case OPTION_STRING:
+ memcpy(dest, option, len);
+ dest[len] = '\0';
+ return ret;
+ default:
+ break;
+ }
+ option += optlen;
+ len -= optlen;
+ if (len <= 0)
+ break;
+ *dest++ = ' ';
+ *dest = '\0';
+ }
+
+ return ret;
+}
+
static GList *get_option_value_list(char *value, GDHCPOptionType type)
{
char *pos = value;
}
}
-static void get_request(GDHCPClient *dhcp_client, struct dhcp_packet *packet)
+static void get_request(GDHCPClient *dhcp_client, struct dhcp_packet *packet,
+ uint16_t packet_len)
{
GDHCPOptionType type;
GList *list, *value_list;
for (list = dhcp_client->request_list; list; list = list->next) {
code = (uint8_t) GPOINTER_TO_INT(list->data);
- option = dhcp_get_option(packet, code);
+ option = dhcp_get_option(packet, packet_len, code);
if (!option) {
g_hash_table_remove(dhcp_client->code_value_hash,
GINT_TO_POINTER((int) code));
{
GDHCPClient *dhcp_client = user_data;
struct sockaddr_in dst_addr = { 0 };
- struct dhcp_packet packet;
+ struct dhcp_packet packet = { 0 };
struct dhcpv6_packet *packet6 = NULL;
uint8_t *message_type = NULL, *client_id = NULL, *option,
*server_id = NULL;
if (condition & (G_IO_NVAL | G_IO_ERR | G_IO_HUP)) {
dhcp_client->listener_watch = 0;
+#if defined TIZEN_EXT
+ /* re-register event listener when socket failed */
+ int retry_count = 0;
+ int ret = -1;
+ while (retry_count++ < GIO_SOCKET_RETRY_COUNT && ret < 0)
+ ret = switch_listening_mode(dhcp_client,
+ dhcp_client->type);
+#endif /* defined TIZEN_EXT */
return FALSE;
}
re = dhcp_recv_l2_packet(&packet,
dhcp_client->listener_sockfd,
&dst_addr);
+ pkt_len = (uint16_t)(unsigned int)re;
xid = packet.xid;
} else if (dhcp_client->listen_mode == L3) {
if (dhcp_client->type == G_DHCP_IPV6) {
re = dhcpv6_recv_l3_packet(&packet6, buf, sizeof(buf),
dhcp_client->listener_sockfd);
+ if (re < 0)
+ return TRUE;
pkt_len = re;
pkt = packet6;
xid = packet6->transaction_id[0] << 16 |
dhcp_client->status_code = status;
}
} else {
- message_type = dhcp_get_option(&packet, DHCP_MESSAGE_TYPE);
+ message_type = dhcp_get_option(&packet, pkt_len, DHCP_MESSAGE_TYPE);
if (!message_type)
return TRUE;
}
- if (!message_type && !client_id)
- /* No message type / client id option, ignore package */
- return TRUE;
-
debug(dhcp_client, "received DHCP packet xid 0x%04x "
"(current state %d)", ntohl(xid), dhcp_client->state);
dhcp_client->timeout = 0;
dhcp_client->retry_times = 0;
- option = dhcp_get_option(&packet, DHCP_SERVER_ID);
+ option = dhcp_get_option(&packet, pkt_len, DHCP_SERVER_ID);
dhcp_client->server_ip = get_be32(option);
dhcp_client->requested_ip = ntohl(packet.yiaddr);
dhcp_client->state = REQUESTING;
- if (dst_addr.sin_addr.s_addr == INADDR_BROADCAST)
- dhcp_client->request_bcast = true;
- else
- dhcp_client->request_bcast = false;
+ /*
+ * RFC2131:
+ *
+ * If unicasting is not possible, the message MAY be
+ * sent as an IP broadcast using an IP broadcast address
+ * (preferably 0xffffffff) as the IP destination address
+ * and the link-layer broadcast address as the link-layer
+ * destination address.
+ *
+ * For interoperability reasons, if the response is an IP
+ * broadcast, let's reuse broadcast flag from DHCPDISCOVER
+ * to which the server has responded. Some servers are picky
+ * about this flag.
+ */
+ dhcp_client->request_bcast =
+ dst_addr.sin_addr.s_addr == INADDR_BROADCAST &&
+ g_hash_table_contains(dhcp_client->secs_bcast_hash,
+ GINT_TO_POINTER(packet.secs));
- debug(dhcp_client, "init ip %s -> %sadding broadcast flag",
- inet_ntoa(dst_addr.sin_addr),
- dhcp_client->request_bcast ? "" : "not ");
+ debug(dhcp_client, "init ip %s secs %hu -> broadcast flag %s",
+ inet_ntoa(dst_addr.sin_addr), packet.secs,
+ dhcp_client->request_bcast ? "on" : "off");
start_request(dhcp_client);
remove_timeouts(dhcp_client);
- dhcp_client->lease_seconds = get_lease(&packet);
+ dhcp_client->lease_seconds = get_lease(&packet, pkt_len);
#if defined TIZEN_EXT
dhcp_client->dhcp_lease_seconds = dhcp_client->lease_seconds;
#endif
- get_request(dhcp_client, &packet);
+ get_request(dhcp_client, &packet, pkt_len);
switch_listening_mode(dhcp_client, L_NONE);
dhcp_client->assigned_ip = get_ip(packet.yiaddr);
if (dhcp_client->state == REBOOTING) {
- option = dhcp_get_option(&packet,
+ option = dhcp_get_option(&packet, pkt_len,
DHCP_SERVER_ID);
dhcp_client->server_ip = get_be32(option);
}
int re;
uint32_t addr;
uint64_t rand;
+ ClientState oldstate = dhcp_client->state;
#if defined TIZEN_EXT
int discover_retry = 0;
}
#if defined TIZEN_EXT
- if (dhcp_client->retry_times == discover_retry) {
+ if (dhcp_client->retry_times == discover_retry) {
#else
- if (dhcp_client->retry_times == DISCOVER_RETRIES) {
+ if (dhcp_client->retry_times == DISCOVER_RETRIES) {
#endif
if (dhcp_client->no_lease_cb)
dhcp_client->no_lease_cb(dhcp_client,
if (re != 0)
return re;
- dhcp_get_random(&rand);
+ __connman_util_get_random(&rand);
dhcp_client->xid = rand;
dhcp_client->start = time(NULL);
+ g_hash_table_remove_all(dhcp_client->secs_bcast_hash);
}
- if (!last_address) {
+ if (!last_address || oldstate == DECLINED) {
addr = 0;
} else {
addr = ntohl(inet_addr(last_address));
case REBOOTING:
case REQUESTING:
case RELEASED:
+ case DECLINED:
case IPV4LL_PROBE:
case IPV4LL_ANNOUNCE:
case INFORMATION_REQ:
return G_DHCP_CLIENT_ERROR_NONE;
}
-/* Now only support send hostname */
+/* Now only support send hostname and vendor class ID */
GDHCPClientError g_dhcp_client_set_send(GDHCPClient *dhcp_client,
unsigned char option_code, const char *option_value)
{
uint8_t *binary_option;
- if (option_code == G_DHCP_HOST_NAME && option_value) {
+ if ((option_code == G_DHCP_HOST_NAME ||
+ option_code == G_DHCP_VENDOR_CLASS_ID) && option_value) {
binary_option = alloc_dhcp_string_option(option_code,
option_value);
if (!binary_option)
g_hash_table_destroy(dhcp_client->code_value_hash);
g_hash_table_destroy(dhcp_client->send_value_hash);
+ g_hash_table_destroy(dhcp_client->secs_bcast_hash);
g_free(dhcp_client);
#if defined TIZEN_EXT
projects / platform / upstream / connman.git / blobdiff