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-rw-r--r--gdhcp/client.c963
1 files changed, 684 insertions, 279 deletions
diff --git a/gdhcp/client.c b/gdhcp/client.c
index bbd00c4..2b7202a 100644
--- a/gdhcp/client.c
+++ b/gdhcp/client.c
@@ -2,7 +2,7 @@
*
* DHCP client library with GLib integration
*
- * Copyright (C) 2009-2012 Intel Corporation. All rights reserved.
+ * Copyright (C) 2009-2014 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
@@ -32,6 +32,7 @@
#include <sys/ioctl.h>
#include <arpa/inet.h>
#include <sys/time.h>
+#include <resolv.h>
#include <netpacket/packet.h>
#include <netinet/if_ether.h>
@@ -61,6 +62,7 @@ typedef enum _listen_mode {
typedef enum _dhcp_client_state {
INIT_SELECTING,
+ REBOOTING,
REQUESTING,
BOUND,
RENEWING,
@@ -77,6 +79,7 @@ typedef enum _dhcp_client_state {
RENEW,
REBIND,
RELEASE,
+ DECLINE,
} ClientState;
struct _GDHCPClient {
@@ -98,8 +101,10 @@ struct _GDHCPClient {
uint8_t ack_retry_times;
uint8_t conflicts;
guint timeout;
+ guint t1_timeout;
+ guint t2_timeout;
+ guint lease_timeout;
guint listener_watch;
- GIOChannel *listener_channel;
GList *require_list;
GList *request_list;
GHashTable *code_value_hash;
@@ -134,6 +139,8 @@ struct _GDHCPClient {
gpointer release_data;
GDHCPClientEventFunc confirm_cb;
gpointer confirm_data;
+ GDHCPClientEventFunc decline_cb;
+ gpointer decline_data;
char *last_address;
unsigned char *duid;
int duid_len;
@@ -144,10 +151,9 @@ struct _GDHCPClient {
uint32_t T1, T2;
struct in6_addr ia_na;
struct in6_addr ia_ta;
- time_t last_renew;
- time_t last_rebind;
- time_t expire;
- gboolean retransmit;
+ time_t last_request;
+ uint32_t expire;
+ bool retransmit;
struct timeval start_time;
};
@@ -156,7 +162,7 @@ static inline void debug(GDHCPClient *client, const char *format, ...)
char str[256];
va_list ap;
- if (client->debug_func == NULL)
+ if (!client->debug_func)
return;
va_start(ap, format);
@@ -251,7 +257,7 @@ static void copy_option(uint8_t *buf, uint16_t code, uint16_t len,
buf[1] = code & 0xff;
buf[2] = len >> 8;
buf[3] = len & 0xff;
- if (len > 0 && msg != NULL)
+ if (len > 0 && msg)
memcpy(&buf[4], msg, len);
}
@@ -268,6 +274,25 @@ static int32_t get_time_diff(struct timeval *tv)
return hsec;
}
+static void remove_timeouts(GDHCPClient *dhcp_client)
+{
+
+ if (dhcp_client->timeout > 0)
+ g_source_remove(dhcp_client->timeout);
+ if (dhcp_client->t1_timeout > 0)
+ g_source_remove(dhcp_client->t1_timeout);
+ if (dhcp_client->t2_timeout > 0)
+ g_source_remove(dhcp_client->t2_timeout);
+ if (dhcp_client->lease_timeout > 0)
+ g_source_remove(dhcp_client->lease_timeout);
+
+ dhcp_client->timeout = 0;
+ dhcp_client->t1_timeout = 0;
+ dhcp_client->t2_timeout = 0;
+ dhcp_client->lease_timeout = 0;
+
+}
+
static void add_dhcpv6_request_options(GDHCPClient *dhcp_client,
struct dhcpv6_packet *packet,
unsigned char *buf, int max_buf,
@@ -275,6 +300,7 @@ static void add_dhcpv6_request_options(GDHCPClient *dhcp_client,
{
GList *list;
uint16_t code, value;
+ bool added;
int32_t diff;
int len;
@@ -283,10 +309,11 @@ static void add_dhcpv6_request_options(GDHCPClient *dhcp_client,
for (list = dhcp_client->request_list; list; list = list->next) {
code = (uint16_t) GPOINTER_TO_INT(list->data);
+ added = false;
switch (code) {
case G_DHCPV6_CLIENTID:
- if (dhcp_client->duid == NULL)
+ if (!dhcp_client->duid)
return;
len = 2 + 2 + dhcp_client->duid_len;
@@ -299,11 +326,12 @@ static void add_dhcpv6_request_options(GDHCPClient *dhcp_client,
copy_option(*ptr_buf, G_DHCPV6_CLIENTID,
dhcp_client->duid_len, dhcp_client->duid);
(*ptr_buf) += len;
+ added = true;
break;
case G_DHCPV6_SERVERID:
- if (dhcp_client->server_duid == NULL)
- return;
+ if (!dhcp_client->server_duid)
+ break;
len = 2 + 2 + dhcp_client->server_duid_len;
if ((*ptr_buf + len) > (buf + max_buf)) {
@@ -316,6 +344,7 @@ static void add_dhcpv6_request_options(GDHCPClient *dhcp_client,
dhcp_client->server_duid_len,
dhcp_client->server_duid);
(*ptr_buf) += len;
+ added = true;
break;
case G_DHCPV6_RAPID_COMMIT:
@@ -328,13 +357,14 @@ static void add_dhcpv6_request_options(GDHCPClient *dhcp_client,
copy_option(*ptr_buf, G_DHCPV6_RAPID_COMMIT, 0, 0);
(*ptr_buf) += len;
+ added = true;
break;
case G_DHCPV6_ORO:
break;
case G_DHCPV6_ELAPSED_TIME:
- if (dhcp_client->retransmit == FALSE) {
+ if (!dhcp_client->retransmit) {
/*
* Initial message, elapsed time is 0.
*/
@@ -356,6 +386,7 @@ static void add_dhcpv6_request_options(GDHCPClient *dhcp_client,
copy_option(*ptr_buf, G_DHCPV6_ELAPSED_TIME,
2, (uint8_t *)&value);
(*ptr_buf) += len;
+ added = true;
break;
case G_DHCPV6_DNS_SERVERS:
@@ -370,6 +401,9 @@ static void add_dhcpv6_request_options(GDHCPClient *dhcp_client,
default:
break;
}
+
+ if (added)
+ debug(dhcp_client, "option %d len %d added", code, len);
}
}
@@ -426,63 +460,37 @@ static int send_discover(GDHCPClient *dhcp_client, uint32_t requested)
MAC_BCAST_ADDR, dhcp_client->ifindex);
}
-static int send_select(GDHCPClient *dhcp_client)
+static int send_request(GDHCPClient *dhcp_client)
{
struct dhcp_packet packet;
-
- debug(dhcp_client, "sending DHCP select request");
+ debug(dhcp_client, "sending DHCP request");
init_packet(dhcp_client, &packet, DHCPREQUEST);
packet.xid = dhcp_client->xid;
packet.secs = dhcp_attempt_secs(dhcp_client);
- dhcp_add_option_uint32(&packet, DHCP_REQUESTED_IP,
- dhcp_client->requested_ip);
- dhcp_add_option_uint32(&packet, DHCP_SERVER_ID,
- dhcp_client->server_ip);
-
- add_request_options(dhcp_client, &packet);
-
- 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);
-}
-
-static int send_renew(GDHCPClient *dhcp_client)
-{
- struct dhcp_packet packet;
+ if (dhcp_client->state == REQUESTING || dhcp_client->state == REBOOTING)
+ dhcp_add_option_uint32(&packet, DHCP_REQUESTED_IP,
+ dhcp_client->requested_ip);
- debug(dhcp_client, "sending DHCP renew request");
+ if (dhcp_client->state == REQUESTING)
+ dhcp_add_option_uint32(&packet, DHCP_SERVER_ID,
+ dhcp_client->server_ip);
- init_packet(dhcp_client , &packet, DHCPREQUEST);
- packet.xid = dhcp_client->xid;
- packet.ciaddr = htonl(dhcp_client->requested_ip);
+ dhcp_add_option_uint16(&packet, DHCP_MAX_SIZE, 576);
add_request_options(dhcp_client, &packet);
add_send_options(dhcp_client, &packet);
- return dhcp_send_kernel_packet(&packet,
- dhcp_client->requested_ip, CLIENT_PORT,
- dhcp_client->server_ip, SERVER_PORT);
-}
-
-static int send_rebound(GDHCPClient *dhcp_client)
-{
- struct dhcp_packet packet;
-
- debug(dhcp_client, "sending DHCP rebound request");
+ if (dhcp_client->state == RENEWING) {
+ packet.ciaddr = htonl(dhcp_client->requested_ip);
- init_packet(dhcp_client , &packet, DHCPREQUEST);
- packet.xid = dhcp_client->xid;
- packet.ciaddr = htonl(dhcp_client->requested_ip);
-
- add_request_options(dhcp_client, &packet);
-
- add_send_options(dhcp_client, &packet);
+ return dhcp_send_kernel_packet(&packet,
+ dhcp_client->requested_ip, CLIENT_PORT,
+ dhcp_client->server_ip, SERVER_PORT);
+ }
return dhcp_send_raw_packet(&packet, INADDR_ANY, CLIENT_PORT,
INADDR_BROADCAST, SERVER_PORT,
@@ -562,9 +570,7 @@ static gboolean send_announce_packet(gpointer dhcp_data)
dhcp_client->requested_ip,
dhcp_client->ifindex);
- if (dhcp_client->timeout > 0)
- g_source_remove(dhcp_client->timeout);
- dhcp_client->timeout = 0;
+ remove_timeouts(dhcp_client);
if (dhcp_client->state == IPV4LL_DEFEND) {
dhcp_client->timeout =
@@ -618,18 +624,18 @@ done:
void g_dhcpv6_client_set_retransmit(GDHCPClient *dhcp_client)
{
- if (dhcp_client == NULL)
+ if (!dhcp_client)
return;
- dhcp_client->retransmit = TRUE;
+ dhcp_client->retransmit = true;
}
void g_dhcpv6_client_clear_retransmit(GDHCPClient *dhcp_client)
{
- if (dhcp_client == NULL)
+ if (!dhcp_client)
return;
- dhcp_client->retransmit = FALSE;
+ dhcp_client->retransmit = false;
}
int g_dhcpv6_create_duid(GDHCPDuidType duid_type, int index, int type,
@@ -641,7 +647,7 @@ int g_dhcpv6_create_duid(GDHCPDuidType duid_type, int index, int type,
case G_DHCPV6_DUID_LLT:
*duid_len = 2 + 2 + 4 + ETH_ALEN;
*duid = g_try_malloc(*duid_len);
- if (*duid == NULL)
+ if (!*duid)
return -ENOMEM;
(*duid)[0] = 0;
@@ -660,7 +666,7 @@ int g_dhcpv6_create_duid(GDHCPDuidType duid_type, int index, int type,
case G_DHCPV6_DUID_LL:
*duid_len = 2 + 2 + ETH_ALEN;
*duid = g_try_malloc(*duid_len);
- if (*duid == NULL)
+ if (!*duid)
return -ENOMEM;
(*duid)[0] = 0;
@@ -674,10 +680,21 @@ int g_dhcpv6_create_duid(GDHCPDuidType duid_type, int index, int type,
return 0;
}
+static gchar *convert_to_hex(unsigned char *buf, int len)
+{
+ gchar *ret = g_try_malloc(len * 2 + 1);
+ int i;
+
+ for (i = 0; ret && i < len; i++)
+ g_snprintf(ret + i * 2, 3, "%02x", buf[i]);
+
+ return ret;
+}
+
int g_dhcpv6_client_set_duid(GDHCPClient *dhcp_client, unsigned char *duid,
int duid_len)
{
- if (dhcp_client == NULL || dhcp_client->type != G_DHCP_IPV6)
+ if (!dhcp_client || dhcp_client->type != G_DHCP_IPV6)
return -EINVAL;
g_free(dhcp_client->duid);
@@ -685,17 +702,95 @@ int g_dhcpv6_client_set_duid(GDHCPClient *dhcp_client, unsigned char *duid,
dhcp_client->duid = duid;
dhcp_client->duid_len = duid_len;
+ if (dhcp_client->debug_func) {
+ gchar *hex = convert_to_hex(duid, duid_len);
+ debug(dhcp_client, "DUID(%d) %s", duid_len, hex);
+ g_free(hex);
+ }
+
+ return 0;
+}
+
+int g_dhcpv6_client_set_pd(GDHCPClient *dhcp_client, uint32_t *T1,
+ uint32_t *T2, GSList *prefixes)
+{
+ uint8_t options[1452];
+ unsigned int max_buf = sizeof(options);
+ int len, count = g_slist_length(prefixes);
+
+ if (!dhcp_client || dhcp_client->type != G_DHCP_IPV6)
+ return -EINVAL;
+
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_IA_PD);
+
+ memset(options, 0, sizeof(options));
+
+ options[0] = dhcp_client->iaid >> 24;
+ options[1] = dhcp_client->iaid >> 16;
+ options[2] = dhcp_client->iaid >> 8;
+ options[3] = dhcp_client->iaid;
+
+ if (T1) {
+ uint32_t t = htonl(*T1);
+ memcpy(&options[4], &t, 4);
+ }
+
+ if (T2) {
+ uint32_t t = htonl(*T2);
+ memcpy(&options[8], &t, 4);
+ }
+
+ len = 12;
+
+ if (count > 0) {
+ GSList *list;
+
+ for (list = prefixes; list; list = list->next) {
+ GDHCPIAPrefix *prefix = list->data;
+ uint8_t sub_option[4+4+1+16];
+
+ if ((len + 2 + 2 + sizeof(sub_option)) >= max_buf) {
+ debug(dhcp_client,
+ "Too long dhcpv6 message "
+ "when writing IA prefix option");
+ return -EINVAL;
+ }
+
+ memset(&sub_option, 0, sizeof(sub_option));
+
+ /* preferred and validity time are left zero */
+
+ sub_option[8] = prefix->prefixlen;
+ memcpy(&sub_option[9], &prefix->prefix, 16);
+
+ copy_option(&options[len], G_DHCPV6_IA_PREFIX,
+ sizeof(sub_option), sub_option);
+ len += 2 + 2 + sizeof(sub_option);
+ }
+ }
+
+ g_dhcpv6_client_set_send(dhcp_client, G_DHCPV6_IA_PD,
+ options, len);
+
return 0;
}
uint32_t g_dhcpv6_client_get_iaid(GDHCPClient *dhcp_client)
{
- if (dhcp_client == NULL || dhcp_client->type != G_DHCP_IPV6)
+ if (!dhcp_client || dhcp_client->type != G_DHCP_IPV6)
return 0;
return dhcp_client->iaid;
}
+void g_dhcpv6_client_set_iaid(GDHCPClient *dhcp_client, uint32_t iaid)
+{
+ if (!dhcp_client || dhcp_client->type != G_DHCP_IPV6)
+ return;
+
+ dhcp_client->iaid = iaid;
+}
+
void g_dhcpv6_client_create_iaid(GDHCPClient *dhcp_client, int index,
unsigned char *iaid)
{
@@ -710,26 +805,23 @@ void g_dhcpv6_client_create_iaid(GDHCPClient *dhcp_client, int index,
int g_dhcpv6_client_get_timeouts(GDHCPClient *dhcp_client,
uint32_t *T1, uint32_t *T2,
- time_t *last_renew, time_t *last_rebind,
+ time_t *started,
time_t *expire)
{
- if (dhcp_client == NULL || dhcp_client->type != G_DHCP_IPV6)
+ if (!dhcp_client || dhcp_client->type != G_DHCP_IPV6)
return -EINVAL;
- if (T1 != NULL)
+ if (T1)
*T1 = dhcp_client->T1;
- if (T2 != NULL)
+ if (T2)
*T2 = dhcp_client->T2;
- if (last_renew != NULL)
- *last_renew = dhcp_client->last_renew;
-
- if (last_rebind != NULL)
- *last_rebind = dhcp_client->last_rebind;
+ if (started)
+ *started = dhcp_client->last_request;
- if (expire != NULL)
- *expire = dhcp_client->expire;
+ if (expire)
+ *expire = dhcp_client->last_request + dhcp_client->expire;
return 0;
}
@@ -747,6 +839,24 @@ static uint8_t *create_iaaddr(GDHCPClient *dhcp_client, uint8_t *buf,
return buf;
}
+static uint8_t *append_iaaddr(GDHCPClient *dhcp_client, uint8_t *buf,
+ const char *address)
+{
+ struct in6_addr addr;
+
+ if (inet_pton(AF_INET6, address, &addr) != 1)
+ return NULL;
+
+ buf[0] = 0;
+ buf[1] = G_DHCPV6_IAADDR;
+ buf[2] = 0;
+ buf[3] = 24;
+ memcpy(&buf[4], &addr, 16);
+ memset(&buf[20], 0, 4); /* preferred */
+ memset(&buf[24], 0, 4); /* valid */
+ return &buf[28];
+}
+
static void put_iaid(GDHCPClient *dhcp_client, int index, uint8_t *buf)
{
uint32_t iaid;
@@ -765,7 +875,7 @@ static void put_iaid(GDHCPClient *dhcp_client, int index, uint8_t *buf)
int g_dhcpv6_client_set_ia(GDHCPClient *dhcp_client, int index,
int code, uint32_t *T1, uint32_t *T2,
- gboolean add_iaaddr, const char *ia_na)
+ bool add_iaaddr, const char *ia_na)
{
if (code == G_DHCPV6_IA_TA) {
uint8_t ia_options[4];
@@ -789,20 +899,20 @@ int g_dhcpv6_client_set_ia(GDHCPClient *dhcp_client, int index,
* if the current address is not set, then we should not send
* the address sub-option.
*/
- if (add_iaaddr == TRUE && ((ia_na == NULL &&
- IN6_IS_ADDR_UNSPECIFIED(&dhcp_client->ia_na) == FALSE)
- || (ia_na != NULL &&
+ if (add_iaaddr && ((!ia_na &&
+ !IN6_IS_ADDR_UNSPECIFIED(&dhcp_client->ia_na))
+ || (ia_na &&
inet_pton(AF_INET6, ia_na, &addr) == 1))) {
#define IAADDR_LEN (16+4+4)
uint8_t ia_options[4+4+4+2+2+IAADDR_LEN];
- if (ia_na != NULL)
+ if (ia_na)
memcpy(&dhcp_client->ia_na, &addr,
sizeof(struct in6_addr));
put_iaid(dhcp_client, index, ia_options);
- if (T1 != NULL) {
+ if (T1) {
ia_options[4] = *T1 >> 24;
ia_options[5] = *T1 >> 16;
ia_options[6] = *T1 >> 8;
@@ -810,7 +920,7 @@ int g_dhcpv6_client_set_ia(GDHCPClient *dhcp_client, int index,
} else
memset(&ia_options[4], 0x00, 4);
- if (T2 != NULL) {
+ if (T2) {
ia_options[8] = *T2 >> 24;
ia_options[9] = *T2 >> 16;
ia_options[10] = *T2 >> 8;
@@ -841,6 +951,67 @@ int g_dhcpv6_client_set_ia(GDHCPClient *dhcp_client, int index,
return 0;
}
+int g_dhcpv6_client_set_ias(GDHCPClient *dhcp_client, int index,
+ int code, uint32_t *T1, uint32_t *T2,
+ GSList *addresses)
+{
+ GSList *list;
+ uint8_t *ia_options, *pos;
+ int len, count, total_len;
+
+ count = g_slist_length(addresses);
+ if (count == 0)
+ return -EINVAL;
+
+ g_dhcp_client_set_request(dhcp_client, code);
+
+ if (code == G_DHCPV6_IA_TA)
+ len = 4; /* IAID */
+ else if (code == G_DHCPV6_IA_NA)
+ len = 4 + 4 + 4; /* IAID + T1 + T2 */
+ else
+ return -EINVAL;
+
+ total_len = len + count * (2 + 2 + 16 + 4 + 4);
+ ia_options = g_try_malloc0(total_len);
+ if (!ia_options)
+ return -ENOMEM;
+
+ put_iaid(dhcp_client, index, ia_options);
+
+ pos = &ia_options[len]; /* skip the IA_NA or IA_TA */
+
+ for (list = addresses; list; list = list->next) {
+ pos = append_iaaddr(dhcp_client, pos, list->data);
+ if (!pos)
+ break;
+ }
+
+ if (code == G_DHCPV6_IA_NA) {
+ if (T1) {
+ ia_options[4] = *T1 >> 24;
+ ia_options[5] = *T1 >> 16;
+ ia_options[6] = *T1 >> 8;
+ ia_options[7] = *T1;
+ } else
+ memset(&ia_options[4], 0x00, 4);
+
+ if (T2) {
+ ia_options[8] = *T2 >> 24;
+ ia_options[9] = *T2 >> 16;
+ ia_options[10] = *T2 >> 8;
+ ia_options[11] = *T2;
+ } else
+ memset(&ia_options[8], 0x00, 4);
+ }
+
+ g_dhcpv6_client_set_send(dhcp_client, code, ia_options, total_len);
+
+ g_free(ia_options);
+
+ return 0;
+}
+
int g_dhcpv6_client_set_oro(GDHCPClient *dhcp_client, int args, ...)
{
va_list va;
@@ -848,7 +1019,7 @@ int g_dhcpv6_client_set_oro(GDHCPClient *dhcp_client, int args, ...)
uint8_t *values;
values = g_try_malloc(len);
- if (values == NULL)
+ if (!values)
return -ENOMEM;
va_start(va, args);
@@ -879,7 +1050,7 @@ static int send_dhcpv6_msg(GDHCPClient *dhcp_client, int type, char *msg)
init_packet(dhcp_client, packet, type);
- if (dhcp_client->retransmit == FALSE) {
+ if (!dhcp_client->retransmit) {
dhcp_client->xid = packet->transaction_id[0] << 16 |
packet->transaction_id[1] << 8 |
packet->transaction_id[2];
@@ -932,6 +1103,11 @@ static int send_dhcpv6_rebind(GDHCPClient *dhcp_client)
return send_dhcpv6_msg(dhcp_client, DHCPV6_REBIND, "rebind");
}
+static int send_dhcpv6_decline(GDHCPClient *dhcp_client)
+{
+ return send_dhcpv6_msg(dhcp_client, DHCPV6_DECLINE, "decline");
+}
+
static int send_dhcpv6_release(GDHCPClient *dhcp_client)
{
return send_dhcpv6_msg(dhcp_client, DHCPV6_RELEASE, "release");
@@ -967,18 +1143,18 @@ GDHCPClient *g_dhcp_client_new(GDHCPType type,
}
dhcp_client = g_try_new0(GDHCPClient, 1);
- if (dhcp_client == NULL) {
+ if (!dhcp_client) {
*error = G_DHCP_CLIENT_ERROR_NOMEM;
return NULL;
}
dhcp_client->interface = get_interface_name(ifindex);
- if (dhcp_client->interface == NULL) {
+ if (!dhcp_client->interface) {
*error = G_DHCP_CLIENT_ERROR_INTERFACE_UNAVAILABLE;
goto error;
}
- if (interface_is_up(ifindex) == FALSE) {
+ if (!interface_is_up(ifindex)) {
*error = G_DHCP_CLIENT_ERROR_INTERFACE_DOWN;
goto error;
}
@@ -986,7 +1162,6 @@ GDHCPClient *g_dhcp_client_new(GDHCPType type,
get_interface_mac_address(ifindex, dhcp_client->mac_address);
dhcp_client->listener_sockfd = -1;
- dhcp_client->listener_channel = NULL;
dhcp_client->listen_mode = L_NONE;
dhcp_client->ref_count = 1;
dhcp_client->type = type;
@@ -1008,7 +1183,7 @@ GDHCPClient *g_dhcp_client_new(GDHCPType type,
dhcp_client->require_list = NULL;
dhcp_client->duid = NULL;
dhcp_client->duid_len = 0;
- dhcp_client->last_renew = dhcp_client->last_rebind = time(NULL);
+ dhcp_client->last_request = time(NULL);
dhcp_client->expire = 0;
*error = G_DHCP_CLIENT_ERROR_NONE;
@@ -1076,7 +1251,7 @@ static int dhcp_l2_socket(int ifindex)
fd = socket(PF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC, htons(ETH_P_IP));
if (fd < 0)
- return fd;
+ return -errno;
if (SERVER_PORT == 67 && CLIENT_PORT == 68)
/* Use only if standard ports are in use */
@@ -1089,31 +1264,32 @@ static int dhcp_l2_socket(int ifindex)
sock.sll_ifindex = ifindex;
if (bind(fd, (struct sockaddr *) &sock, sizeof(sock)) != 0) {
+ int err = -errno;
close(fd);
- return -errno;
+ return err;
}
return fd;
}
-static gboolean sanity_check(struct ip_udp_dhcp_packet *packet, int bytes)
+static bool sanity_check(struct ip_udp_dhcp_packet *packet, int bytes)
{
if (packet->ip.protocol != IPPROTO_UDP)
- return FALSE;
+ return false;
if (packet->ip.version != IPVERSION)
- return FALSE;
+ return false;
if (packet->ip.ihl != sizeof(packet->ip) >> 2)
- return FALSE;
+ return false;
if (packet->udp.dest != htons(CLIENT_PORT))
- return FALSE;
+ return false;
if (ntohs(packet->udp.len) != (uint16_t)(bytes - sizeof(packet->ip)))
- return FALSE;
+ return false;
- return TRUE;
+ return true;
}
static int dhcp_recv_l2_packet(struct dhcp_packet *dhcp_pkt, int fd)
@@ -1138,7 +1314,7 @@ static int dhcp_recv_l2_packet(struct dhcp_packet *dhcp_pkt, int fd)
/* ignore any extra garbage bytes */
bytes = ntohs(packet.ip.tot_len);
- if (sanity_check(&packet, bytes) == FALSE)
+ if (!sanity_check(&packet, bytes))
return -1;
check = packet.ip.check;
@@ -1169,13 +1345,9 @@ static void ipv4ll_start(GDHCPClient *dhcp_client)
guint timeout;
int seed;
- if (dhcp_client->timeout > 0) {
- g_source_remove(dhcp_client->timeout);
- dhcp_client->timeout = 0;
- }
+ remove_timeouts(dhcp_client);
switch_listening_mode(dhcp_client, L_NONE);
- dhcp_client->type = G_DHCP_IPV4LL;
dhcp_client->retry_times = 0;
dhcp_client->requested_ip = 0;
@@ -1199,8 +1371,7 @@ static void ipv4ll_stop(GDHCPClient *dhcp_client)
switch_listening_mode(dhcp_client, L_NONE);
- if (dhcp_client->timeout > 0)
- g_source_remove(dhcp_client->timeout);
+ remove_timeouts(dhcp_client);
if (dhcp_client->listener_watch > 0) {
g_source_remove(dhcp_client->listener_watch);
@@ -1260,7 +1431,7 @@ static int ipv4ll_recv_arp_packet(GDHCPClient *dhcp_client)
if (dhcp_client->state == IPV4LL_DEFEND) {
if (!source_conflict)
return 0;
- else if (dhcp_client->ipv4ll_lost_cb != NULL)
+ else if (dhcp_client->ipv4ll_lost_cb)
dhcp_client->ipv4ll_lost_cb(dhcp_client,
dhcp_client->ipv4ll_lost_data);
}
@@ -1281,42 +1452,42 @@ static int ipv4ll_recv_arp_packet(GDHCPClient *dhcp_client)
* to wait RATE_LIMIT_INTERVAL before retrying,
* but we just report failure.
*/
- else if (dhcp_client->no_lease_cb != NULL)
+ else if (dhcp_client->no_lease_cb)
dhcp_client->no_lease_cb(dhcp_client,
dhcp_client->no_lease_data);
return 0;
}
-static gboolean check_package_owner(GDHCPClient *dhcp_client, gpointer pkt)
+static bool check_package_owner(GDHCPClient *dhcp_client, gpointer pkt)
{
if (dhcp_client->type == G_DHCP_IPV6) {
struct dhcpv6_packet *packet6 = pkt;
uint32_t xid;
- if (packet6 == NULL)
- return FALSE;
+ if (!packet6)
+ return false;
xid = packet6->transaction_id[0] << 16 |
packet6->transaction_id[1] << 8 |
packet6->transaction_id[2];
if (xid != dhcp_client->xid)
- return FALSE;
+ return false;
} else {
struct dhcp_packet *packet = pkt;
if (packet->xid != dhcp_client->xid)
- return FALSE;
+ return false;
if (packet->hlen != 6)
- return FALSE;
+ return false;
if (memcmp(packet->chaddr, dhcp_client->mac_address, 6))
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
}
static void start_request(GDHCPClient *dhcp_client);
@@ -1353,7 +1524,6 @@ static int switch_listening_mode(GDHCPClient *dhcp_client,
if (dhcp_client->listen_mode != L_NONE) {
if (dhcp_client->listener_watch > 0)
g_source_remove(dhcp_client->listener_watch);
- dhcp_client->listener_channel = NULL;
dhcp_client->listen_mode = L_NONE;
dhcp_client->listener_sockfd = -1;
dhcp_client->listener_watch = 0;
@@ -1382,7 +1552,7 @@ static int switch_listening_mode(GDHCPClient *dhcp_client,
return -EIO;
listener_channel = g_io_channel_unix_new(listener_sockfd);
- if (listener_channel == NULL) {
+ if (!listener_channel) {
/* Failed to create listener channel */
close(listener_sockfd);
return -EIO;
@@ -1390,7 +1560,6 @@ static int switch_listening_mode(GDHCPClient *dhcp_client,
dhcp_client->listen_mode = listen_mode;
dhcp_client->listener_sockfd = listener_sockfd;
- dhcp_client->listener_channel = listener_channel;
g_io_channel_set_close_on_unref(listener_channel, TRUE);
dhcp_client->listener_watch =
@@ -1398,7 +1567,7 @@ static int switch_listening_mode(GDHCPClient *dhcp_client,
G_IO_IN | G_IO_NVAL | G_IO_ERR | G_IO_HUP,
listener_event, dhcp_client,
NULL);
- g_io_channel_unref(dhcp_client->listener_channel);
+ g_io_channel_unref(listener_channel);
return 0;
}
@@ -1409,9 +1578,9 @@ static void start_request(GDHCPClient *dhcp_client)
dhcp_client->retry_times);
if (dhcp_client->retry_times == REQUEST_RETRIES) {
- dhcp_client->state = INIT_SELECTING;
- ipv4ll_start(dhcp_client);
-
+ if (dhcp_client->no_lease_cb)
+ dhcp_client->no_lease_cb(dhcp_client,
+ dhcp_client->no_lease_data);
return;
}
@@ -1420,7 +1589,7 @@ static void start_request(GDHCPClient *dhcp_client)
switch_listening_mode(dhcp_client, L2);
}
- send_select(dhcp_client);
+ send_request(dhcp_client);
dhcp_client->timeout = g_timeout_add_seconds_full(G_PRIORITY_HIGH,
REQUEST_TIMEOUT,
@@ -1435,7 +1604,7 @@ static uint32_t get_lease(struct dhcp_packet *packet)
uint32_t lease_seconds;
option = dhcp_get_option(packet, DHCP_LEASE_TIME);
- if (option == NULL)
+ if (!option)
return 3600;
lease_seconds = get_be32(option);
@@ -1451,10 +1620,7 @@ static void restart_dhcp(GDHCPClient *dhcp_client, int retry_times)
{
debug(dhcp_client, "restart DHCP (retries %d)", retry_times);
- if (dhcp_client->timeout > 0) {
- g_source_remove(dhcp_client->timeout);
- dhcp_client->timeout = 0;
- }
+ remove_timeouts(dhcp_client);
dhcp_client->retry_times = retry_times;
dhcp_client->requested_ip = 0;
@@ -1464,78 +1630,103 @@ static void restart_dhcp(GDHCPClient *dhcp_client, int retry_times)
g_dhcp_client_start(dhcp_client, dhcp_client->last_address);
}
-static gboolean start_rebound_timeout(gpointer user_data)
+static gboolean start_expire(gpointer user_data)
{
GDHCPClient *dhcp_client = user_data;
- debug(dhcp_client, "start rebound timeout");
+ debug(dhcp_client, "lease expired");
- switch_listening_mode(dhcp_client, L2);
+ /*remove all timeouts if they are set*/
+ remove_timeouts(dhcp_client);
- dhcp_client->lease_seconds >>= 1;
+ restart_dhcp(dhcp_client, 0);
- /* We need to have enough time to receive ACK package*/
- if (dhcp_client->lease_seconds <= 6) {
+ /* ip need to be cleared */
+ if (dhcp_client->lease_lost_cb)
+ dhcp_client->lease_lost_cb(dhcp_client,
+ dhcp_client->lease_lost_data);
- /* ip need to be cleared */
- if (dhcp_client->lease_lost_cb != NULL)
- dhcp_client->lease_lost_cb(dhcp_client,
- dhcp_client->lease_lost_data);
+ return false;
+}
- restart_dhcp(dhcp_client, 0);
- } else {
- send_rebound(dhcp_client);
+static gboolean continue_rebound(gpointer user_data)
+{
+ GDHCPClient *dhcp_client = user_data;
- dhcp_client->timeout =
- g_timeout_add_seconds_full(G_PRIORITY_HIGH,
- dhcp_client->lease_seconds >> 1,
- start_rebound_timeout,
- dhcp_client,
- NULL);
+ switch_listening_mode(dhcp_client, L2);
+ send_request(dhcp_client);
+
+ if (dhcp_client->t2_timeout> 0)
+ g_source_remove(dhcp_client->t2_timeout);
+
+ /*recalculate remaining rebind time*/
+ dhcp_client->T2 >>= 1;
+ if (dhcp_client->T2 > 60) {
+ dhcp_client->t2_timeout =
+ g_timeout_add_full(G_PRIORITY_HIGH,
+ dhcp_client->T2 * 1000 + (rand() % 2000) - 1000,
+ continue_rebound,
+ dhcp_client,
+ NULL);
}
return FALSE;
}
-static void start_rebound(GDHCPClient *dhcp_client)
+static gboolean start_rebound(gpointer user_data)
{
- debug(dhcp_client, "start rebound");
+ GDHCPClient *dhcp_client = user_data;
+ /*remove renew timer*/
+ if (dhcp_client->t1_timeout > 0)
+ g_source_remove(dhcp_client->t1_timeout);
+
+ debug(dhcp_client, "start rebound");
dhcp_client->state = REBINDING;
- dhcp_client->timeout = g_timeout_add_seconds_full(G_PRIORITY_HIGH,
- dhcp_client->lease_seconds >> 1,
- start_rebound_timeout,
- dhcp_client,
- NULL);
+ /*calculate total rebind time*/
+ dhcp_client->T2 = dhcp_client->expire - dhcp_client->T2;
+
+ /*send the first rebound and reschedule*/
+ continue_rebound(user_data);
+
+ return FALSE;
}
-static gboolean start_renew_timeout(gpointer user_data)
+static gboolean continue_renew (gpointer user_data)
{
GDHCPClient *dhcp_client = user_data;
- debug(dhcp_client, "start renew timeout");
+ switch_listening_mode(dhcp_client, L3);
+ send_request(dhcp_client);
- dhcp_client->state = RENEWING;
+ if (dhcp_client->t1_timeout > 0)
+ g_source_remove(dhcp_client->t1_timeout);
- dhcp_client->lease_seconds >>= 1;
+ dhcp_client->T1 >>= 1;
- switch_listening_mode(dhcp_client, L3);
- if (dhcp_client->lease_seconds <= 60)
- start_rebound(dhcp_client);
- else {
- send_renew(dhcp_client);
+ if (dhcp_client->T1 > 60) {
+ dhcp_client->t1_timeout = g_timeout_add_full(G_PRIORITY_HIGH,
+ dhcp_client->T1 * 1000 + (rand() % 2000) - 1000,
+ continue_renew,
+ dhcp_client,
+ NULL);
+ }
- if (dhcp_client->timeout > 0)
- g_source_remove(dhcp_client->timeout);
+ return FALSE;
+}
+static gboolean start_renew(gpointer user_data)
+{
+ GDHCPClient *dhcp_client = user_data;
- dhcp_client->timeout =
- g_timeout_add_seconds_full(G_PRIORITY_HIGH,
- dhcp_client->lease_seconds >> 1,
- start_renew_timeout,
- dhcp_client,
- NULL);
- }
+ debug(dhcp_client, "start renew");
+ dhcp_client->state = RENEWING;
+
+ /*calculate total renew period*/
+ dhcp_client->T1 = dhcp_client->T2 - dhcp_client->T1;
+
+ /*send first renew and reschedule for half the remaining time.*/
+ continue_renew(user_data);
return FALSE;
}
@@ -1546,12 +1737,30 @@ static void start_bound(GDHCPClient *dhcp_client)
dhcp_client->state = BOUND;
- if (dhcp_client->timeout > 0)
- g_source_remove(dhcp_client->timeout);
+ remove_timeouts(dhcp_client);
- dhcp_client->timeout = g_timeout_add_seconds_full(G_PRIORITY_HIGH,
- dhcp_client->lease_seconds >> 1,
- start_renew_timeout, dhcp_client,
+ /*
+ *TODO: T1 and T2 should be set through options instead of
+ * defaults as they are here.
+ */
+
+ dhcp_client->T1 = dhcp_client->lease_seconds >> 1;
+ dhcp_client->T2 = dhcp_client->lease_seconds * 0.875;
+ dhcp_client->expire = dhcp_client->lease_seconds;
+
+ dhcp_client->t1_timeout = g_timeout_add_seconds_full(G_PRIORITY_HIGH,
+ dhcp_client->T1,
+ start_renew, dhcp_client,
+ NULL);
+
+ dhcp_client->t2_timeout = g_timeout_add_seconds_full(G_PRIORITY_HIGH,
+ dhcp_client->T2,
+ start_rebound, dhcp_client,
+ NULL);
+
+ dhcp_client->lease_timeout= g_timeout_add_seconds_full(G_PRIORITY_HIGH,
+ dhcp_client->expire,
+ start_expire, dhcp_client,
NULL);
}
@@ -1561,10 +1770,14 @@ static gboolean restart_dhcp_timeout(gpointer user_data)
debug(dhcp_client, "restart DHCP timeout");
- dhcp_client->ack_retry_times++;
-
- restart_dhcp(dhcp_client, dhcp_client->ack_retry_times);
-
+ if (dhcp_client->state == REBOOTING) {
+ g_free(dhcp_client->last_address);
+ dhcp_client->last_address = NULL;
+ restart_dhcp(dhcp_client, 0);
+ } else {
+ dhcp_client->ack_retry_times++;
+ restart_dhcp(dhcp_client, dhcp_client->ack_retry_times);
+ }
return FALSE;
}
@@ -1606,7 +1819,7 @@ static char *malloc_option_value_string(uint8_t *option, GDHCPOptionType type)
upper_length = len_of_option_as_string[type] *
((unsigned)len / (unsigned)optlen);
dest = ret = g_malloc(upper_length + 1);
- if (ret == NULL)
+ if (!ret)
return NULL;
while (len >= optlen) {
@@ -1647,13 +1860,13 @@ static GList *get_option_value_list(char *value, GDHCPOptionType type)
char *pos = value;
GList *list = NULL;
- if (pos == NULL)
+ if (!pos)
return NULL;
if (type == OPTION_STRING)
return g_list_append(list, g_strdup(value));
- while ((pos = strchr(pos, ' ')) != NULL) {
+ while ((pos = strchr(pos, ' '))) {
*pos = '\0';
list = g_list_append(list, g_strdup(value));
@@ -1677,6 +1890,33 @@ static inline uint16_t get_uint16(unsigned char *value)
return value[0] << 8 | value[1];
}
+static GList *add_prefix(GDHCPClient *dhcp_client, GList *list,
+ struct in6_addr *addr,
+ unsigned char prefixlen, uint32_t preferred,
+ uint32_t valid)
+{
+ GDHCPIAPrefix *ia_prefix;
+
+ ia_prefix = g_try_new(GDHCPIAPrefix, 1);
+ if (!ia_prefix)
+ return list;
+
+ if (dhcp_client->debug_func) {
+ char addr_str[INET6_ADDRSTRLEN + 1];
+ inet_ntop(AF_INET6, addr, addr_str, INET6_ADDRSTRLEN);
+ debug(dhcp_client, "prefix %s/%d preferred %u valid %u",
+ addr_str, prefixlen, preferred, valid);
+ }
+
+ memcpy(&ia_prefix->prefix, addr, sizeof(struct in6_addr));
+ ia_prefix->prefixlen = prefixlen;
+ ia_prefix->preferred = preferred;
+ ia_prefix->valid = valid;
+ ia_prefix->expire = time(NULL) + valid;
+
+ return g_list_prepend(list, ia_prefix);
+}
+
static GList *get_addresses(GDHCPClient *dhcp_client,
int code, int len,
unsigned char *value,
@@ -1686,23 +1926,26 @@ static GList *get_addresses(GDHCPClient *dhcp_client,
struct in6_addr addr;
uint32_t iaid, T1 = 0, T2 = 0, preferred = 0, valid = 0;
uint16_t option_len, option_code, st = 0, max_len;
- int addr_count = 0, i, pos;
+ int addr_count = 0, prefix_count = 0, i, pos;
+ unsigned char prefixlen;
+ unsigned int shortest_valid = 0;
uint8_t *option;
char *str;
- if (value == NULL || len < 4)
+ if (!value || len < 4)
return NULL;
iaid = get_uint32(&value[0]);
if (dhcp_client->iaid != iaid)
return NULL;
- if (code == G_DHCPV6_IA_NA) {
+ if (code == G_DHCPV6_IA_NA || code == G_DHCPV6_IA_PD) {
T1 = get_uint32(&value[4]);
T2 = get_uint32(&value[8]);
if (T1 > T2)
- /* RFC 3315, 22.4 */
+ /* IA_NA: RFC 3315, 22.4 */
+ /* IA_PD: RFC 3633, ch 9 */
return NULL;
pos = 12;
@@ -1714,6 +1957,8 @@ static GList *get_addresses(GDHCPClient *dhcp_client,
max_len = len - pos;
+ debug(dhcp_client, "header %d sub-option max len %d", pos, max_len);
+
/* We have more sub-options in this packet. */
do {
option = dhcpv6_get_sub_option(&value[pos], max_len,
@@ -1722,10 +1967,10 @@ static GList *get_addresses(GDHCPClient *dhcp_client,
debug(dhcp_client, "pos %d option %p code %d len %d",
pos, option, option_code, option_len);
- if (option == NULL)
+ if (!option)
break;
- if (pos >= max_len)
+ if (pos >= len)
break;
switch (option_code) {
@@ -1752,11 +1997,31 @@ static GList *get_addresses(GDHCPClient *dhcp_client,
*status = st;
break;
+
+ case G_DHCPV6_IA_PREFIX:
+ i = 0;
+ preferred = get_uint32(&option[i]);
+ i += 4;
+ valid = get_uint32(&option[i]);
+ i += 4;
+ prefixlen = option[i];
+ i += 1;
+ memcpy(&addr, &option[i], sizeof(addr));
+ i += sizeof(addr);
+ if (preferred < valid) {
+ /* RFC 3633, ch 10 */
+ list = add_prefix(dhcp_client, list, &addr,
+ prefixlen, preferred, valid);
+ if (shortest_valid > valid)
+ shortest_valid = valid;
+ prefix_count++;
+ }
+ break;
}
pos += 2 + 2 + option_len;
- } while (option != NULL);
+ } while (pos < len);
if (addr_count > 0 && st == 0) {
/* We only support one address atm */
@@ -1770,7 +2035,7 @@ static GList *get_addresses(GDHCPClient *dhcp_client,
dhcp_client->T2 = T2;
inet_ntop(AF_INET6, &addr, addr_str, INET6_ADDRSTRLEN);
- debug(dhcp_client, "count %d addr %s T1 %u T2 %u",
+ debug(dhcp_client, "address count %d addr %s T1 %u T2 %u",
addr_count, addr_str, T1, T2);
list = g_list_append(list, g_strdup(addr_str));
@@ -1782,12 +2047,59 @@ static GList *get_addresses(GDHCPClient *dhcp_client,
memcpy(&dhcp_client->ia_ta, &addr,
sizeof(struct in6_addr));
- g_dhcpv6_client_set_expire(dhcp_client, valid);
+ if (valid > dhcp_client->expire)
+ dhcp_client->expire = valid;
}
+ if (prefix_count > 0 && list) {
+ /*
+ * This means we have a list of prefixes to delegate.
+ */
+ list = g_list_reverse(list);
+
+ debug(dhcp_client, "prefix count %d T1 %u T2 %u",
+ prefix_count, T1, T2);
+
+ dhcp_client->T1 = T1;
+ dhcp_client->T2 = T2;
+
+ dhcp_client->expire = shortest_valid;
+ }
+
+ if (status && *status != 0)
+ debug(dhcp_client, "status %d", *status);
+
return list;
}
+static GList *get_domains(int maxlen, unsigned char *value)
+
+{
+ GList *list = NULL;
+ int pos = 0;
+ unsigned char *c;
+ char dns_name[NS_MAXDNAME + 1];
+
+ if (!value || maxlen < 3)
+ return NULL;
+
+ while (pos < maxlen) {
+ strncpy(dns_name, (char *)&value[pos], NS_MAXDNAME);
+
+ c = (unsigned char *)dns_name;
+ while (c && *c) {
+ int jump;
+ jump = *c;
+ *c = '.';
+ c += jump + 1;
+ }
+ list = g_list_prepend(list, g_strdup(&dns_name[1]));
+ pos += (char *)c - dns_name + 1;
+ }
+
+ return g_list_reverse(list);
+}
+
static GList *get_dhcpv6_option_value_list(GDHCPClient *dhcp_client,
int code, int len,
unsigned char *value,
@@ -1797,7 +2109,7 @@ static GList *get_dhcpv6_option_value_list(GDHCPClient *dhcp_client,
char *str;
int i;
- if (value == NULL)
+ if (!value)
return NULL;
switch (code) {
@@ -1813,11 +2125,11 @@ static GList *get_dhcpv6_option_value_list(GDHCPClient *dhcp_client,
for (i = 0; i < len; i += 16) {
str = g_try_malloc0(INET6_ADDRSTRLEN+1);
- if (str == NULL)
+ if (!str)
return list;
- if (inet_ntop(AF_INET6, &value[i], str,
- INET6_ADDRSTRLEN) == NULL)
+ if (!inet_ntop(AF_INET6, &value[i], str,
+ INET6_ADDRSTRLEN))
g_free(str);
else
list = g_list_append(list, str);
@@ -1826,9 +2138,14 @@ static GList *get_dhcpv6_option_value_list(GDHCPClient *dhcp_client,
case G_DHCPV6_IA_NA: /* RFC 3315, chapter 22.4 */
case G_DHCPV6_IA_TA: /* RFC 3315, chapter 22.5 */
+ case G_DHCPV6_IA_PD: /* RFC 3633, chapter 9 */
list = get_addresses(dhcp_client, code, len, value, status);
break;
+ case G_DHCPV6_DOMAIN_LIST:
+ list = get_domains(len, value);
+ break;
+
default:
break;
}
@@ -1850,7 +2167,7 @@ static void get_dhcpv6_request(GDHCPClient *dhcp_client,
option = dhcpv6_get_option(packet, pkt_len, code, &option_len,
NULL);
- if (option == NULL) {
+ if (!option) {
g_hash_table_remove(dhcp_client->code_value_hash,
GINT_TO_POINTER((int) code));
continue;
@@ -1862,7 +2179,7 @@ static void get_dhcpv6_request(GDHCPClient *dhcp_client,
debug(dhcp_client, "code %d %p len %d list %p", code, option,
option_len, value_list);
- if (value_list == NULL)
+ if (!value_list)
g_hash_table_remove(dhcp_client->code_value_hash,
GINT_TO_POINTER((int) code));
else
@@ -1883,7 +2200,7 @@ static void get_request(GDHCPClient *dhcp_client, struct dhcp_packet *packet)
code = (uint8_t) GPOINTER_TO_INT(list->data);
option = dhcp_get_option(packet, code);
- if (option == NULL) {
+ if (!option) {
g_hash_table_remove(dhcp_client->code_value_hash,
GINT_TO_POINTER((int) code));
continue;
@@ -1892,7 +2209,7 @@ static void get_request(GDHCPClient *dhcp_client, struct dhcp_packet *packet)
type = dhcp_get_code_type(code);
option_value = malloc_option_value_string(option, type);
- if (option_value == NULL)
+ if (!option_value)
g_hash_table_remove(dhcp_client->code_value_hash,
GINT_TO_POINTER((int) code));
@@ -1900,7 +2217,7 @@ static void get_request(GDHCPClient *dhcp_client, struct dhcp_packet *packet)
g_free(option_value);
- if (value_list == NULL)
+ if (!value_list)
g_hash_table_remove(dhcp_client->code_value_hash,
GINT_TO_POINTER((int) code));
else
@@ -1937,10 +2254,10 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
dhcp_client->status_code = 0;
- if (dhcp_client->listen_mode == L2)
+ if (dhcp_client->listen_mode == L2) {
re = dhcp_recv_l2_packet(&packet,
dhcp_client->listener_sockfd);
- else if (dhcp_client->listen_mode == L3) {
+ } 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);
@@ -1957,25 +2274,24 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
} else if (dhcp_client->listen_mode == L_ARP) {
ipv4ll_recv_arp_packet(dhcp_client);
return TRUE;
- }
- else
+ } else
re = -EIO;
if (re < 0)
return TRUE;
- if (check_package_owner(dhcp_client, pkt) == FALSE)
+ if (!check_package_owner(dhcp_client, pkt))
return TRUE;
if (dhcp_client->type == G_DHCP_IPV6) {
- if (packet6 == NULL)
+ if (!packet6)
return TRUE;
count = 0;
client_id = dhcpv6_get_option(packet6, pkt_len,
G_DHCPV6_CLIENTID, &option_len, &count);
- if (client_id == NULL || count == 0 || option_len == 0 ||
+ if (!client_id || count == 0 || option_len == 0 ||
memcmp(dhcp_client->duid, client_id,
dhcp_client->duid_len) != 0) {
debug(dhcp_client,
@@ -2003,11 +2319,11 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
}
} else {
message_type = dhcp_get_option(&packet, DHCP_MESSAGE_TYPE);
- if (message_type == NULL)
+ if (!message_type)
return TRUE;
}
- if (message_type == NULL && client_id == NULL)
+ if (!message_type && !client_id)
/* No message type / client id option, ignore package */
return TRUE;
@@ -2019,7 +2335,7 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
if (*message_type != DHCPOFFER)
return TRUE;
- g_source_remove(dhcp_client->timeout);
+ remove_timeouts(dhcp_client);
dhcp_client->timeout = 0;
dhcp_client->retry_times = 0;
@@ -2032,15 +2348,14 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
start_request(dhcp_client);
return TRUE;
+ case REBOOTING:
case REQUESTING:
case RENEWING:
case REBINDING:
if (*message_type == DHCPACK) {
dhcp_client->retry_times = 0;
- if (dhcp_client->timeout > 0)
- g_source_remove(dhcp_client->timeout);
- dhcp_client->timeout = 0;
+ remove_timeouts(dhcp_client);
dhcp_client->lease_seconds = get_lease(&packet);
@@ -2052,7 +2367,7 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
dhcp_client->assigned_ip = get_ip(packet.yiaddr);
/* Address should be set up here */
- if (dhcp_client->lease_available_cb != NULL)
+ if (dhcp_client->lease_available_cb)
dhcp_client->lease_available_cb(dhcp_client,
dhcp_client->lease_available_data);
@@ -2060,8 +2375,7 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
} else if (*message_type == DHCPNAK) {
dhcp_client->retry_times = 0;
- if (dhcp_client->timeout > 0)
- g_source_remove(dhcp_client->timeout);
+ remove_timeouts(dhcp_client);
dhcp_client->timeout = g_timeout_add_seconds_full(
G_PRIORITY_HIGH, 3,
@@ -2082,7 +2396,7 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
count = 0;
server_id = dhcpv6_get_option(packet6, pkt_len,
G_DHCPV6_SERVERID, &option_len, &count);
- if (server_id == NULL || count != 1 || option_len == 0) {
+ if (!server_id || count != 1 || option_len == 0) {
/* RFC 3315, 15.10 */
debug(dhcp_client,
"server duid error, discarding msg %p/%d/%d",
@@ -2090,7 +2404,7 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
return TRUE;
}
dhcp_client->server_duid = g_try_malloc(option_len);
- if (dhcp_client->server_duid == NULL)
+ if (!dhcp_client->server_duid)
return TRUE;
memcpy(dhcp_client->server_duid, server_id, option_len);
dhcp_client->server_duid_len = option_len;
@@ -2102,7 +2416,7 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
rapid_commit = dhcpv6_get_option(packet6, pkt_len,
G_DHCPV6_RAPID_COMMIT,
&option_len, &count);
- if (rapid_commit == NULL || option_len == 0 ||
+ if (!rapid_commit || option_len == 0 ||
count != 1)
/* RFC 3315, 17.1.4 */
return TRUE;
@@ -2115,13 +2429,13 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
&dhcp_client->status_code);
if (packet6->message == DHCPV6_ADVERTISE) {
- if (dhcp_client->advertise_cb != NULL)
+ if (dhcp_client->advertise_cb)
dhcp_client->advertise_cb(dhcp_client,
dhcp_client->advertise_data);
return TRUE;
}
- if (dhcp_client->solicitation_cb != NULL) {
+ if (dhcp_client->solicitation_cb) {
/*
* The dhcp_client might not be valid after the
* callback call so just return immediately.
@@ -2131,12 +2445,31 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
return TRUE;
}
break;
+ case REBIND:
+ if (dhcp_client->type != G_DHCP_IPV6)
+ return TRUE;
+
+ server_id = dhcpv6_get_option(packet6, pkt_len,
+ G_DHCPV6_SERVERID, &option_len, &count);
+ if (!dhcp_client->server_duid && server_id &&
+ count == 1) {
+ /*
+ * If we do not have server duid yet, then get it now.
+ * Prefix delegation renew support needs it.
+ */
+ dhcp_client->server_duid = g_try_malloc(option_len);
+ if (!dhcp_client->server_duid)
+ return TRUE;
+ memcpy(dhcp_client->server_duid, server_id, option_len);
+ dhcp_client->server_duid_len = option_len;
+ }
+ /* fall through */
case INFORMATION_REQ:
case REQUEST:
case RENEW:
- case REBIND:
case RELEASE:
case CONFIRM:
+ case DECLINE:
if (dhcp_client->type != G_DHCP_IPV6)
return TRUE;
@@ -2147,7 +2480,7 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
option_len = 0;
server_id = dhcpv6_get_option(packet6, pkt_len,
G_DHCPV6_SERVERID, &option_len, &count);
- if (server_id == NULL || count != 1 || option_len == 0 ||
+ if (!server_id || count != 1 || option_len == 0 ||
(dhcp_client->server_duid_len > 0 &&
memcmp(dhcp_client->server_duid, server_id,
dhcp_client->server_duid_len) != 0)) {
@@ -2163,7 +2496,7 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
get_dhcpv6_request(dhcp_client, packet6, pkt_len,
&dhcp_client->status_code);
- if (dhcp_client->information_req_cb != NULL) {
+ if (dhcp_client->information_req_cb) {
/*
* The dhcp_client might not be valid after the
* callback call so just return immediately.
@@ -2172,32 +2505,37 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
dhcp_client->information_req_data);
return TRUE;
}
- if (dhcp_client->request_cb != NULL) {
+ if (dhcp_client->request_cb) {
dhcp_client->request_cb(dhcp_client,
dhcp_client->request_data);
return TRUE;
}
- if (dhcp_client->renew_cb != NULL) {
+ if (dhcp_client->renew_cb) {
dhcp_client->renew_cb(dhcp_client,
dhcp_client->renew_data);
return TRUE;
}
- if (dhcp_client->rebind_cb != NULL) {
+ if (dhcp_client->rebind_cb) {
dhcp_client->rebind_cb(dhcp_client,
dhcp_client->rebind_data);
return TRUE;
}
- if (dhcp_client->release_cb != NULL) {
+ if (dhcp_client->release_cb) {
dhcp_client->release_cb(dhcp_client,
dhcp_client->release_data);
return TRUE;
}
- if (dhcp_client->confirm_cb != NULL) {
+ if (dhcp_client->decline_cb) {
+ dhcp_client->decline_cb(dhcp_client,
+ dhcp_client->decline_data);
+ return TRUE;
+ }
+ if (dhcp_client->confirm_cb) {
count = 0;
server_id = dhcpv6_get_option(packet6, pkt_len,
G_DHCPV6_SERVERID, &option_len,
&count);
- if (server_id == NULL || count != 1 ||
+ if (!server_id || count != 1 ||
option_len == 0) {
/* RFC 3315, 15.10 */
debug(dhcp_client,
@@ -2207,7 +2545,7 @@ static gboolean listener_event(GIOChannel *channel, GIOCondition condition,
return TRUE;
}
dhcp_client->server_duid = g_try_malloc(option_len);
- if (dhcp_client->server_duid == NULL)
+ if (!dhcp_client->server_duid)
return TRUE;
memcpy(dhcp_client->server_duid, server_id, option_len);
dhcp_client->server_duid_len = option_len;
@@ -2243,6 +2581,22 @@ static gboolean discover_timeout(gpointer user_data)
return FALSE;
}
+static gboolean reboot_timeout(gpointer user_data)
+{
+ GDHCPClient *dhcp_client = user_data;
+ dhcp_client->retry_times = 0;
+ dhcp_client->requested_ip = 0;
+ dhcp_client->state = INIT_SELECTING;
+ /*
+ * We do not send the REQUESTED IP option because the server didn't
+ * respond when we send DHCPREQUEST with the REQUESTED IP option in
+ * init-reboot state
+ */
+ g_dhcp_client_start(dhcp_client, NULL);
+
+ return FALSE;
+}
+
static gboolean ipv4ll_defend_timeout(gpointer dhcp_data)
{
GDHCPClient *dhcp_client = dhcp_data;
@@ -2263,7 +2617,7 @@ static gboolean ipv4ll_announce_timeout(gpointer dhcp_data)
debug(dhcp_client, "request timeout (retries %d)",
dhcp_client->retry_times);
- if (dhcp_client->retry_times != ANNOUNCE_NUM){
+ if (dhcp_client->retry_times != ANNOUNCE_NUM) {
dhcp_client->retry_times++;
send_announce_packet(dhcp_client);
return FALSE;
@@ -2274,7 +2628,7 @@ static gboolean ipv4ll_announce_timeout(gpointer dhcp_data)
dhcp_client->state = IPV4LL_MONITOR;
dhcp_client->assigned_ip = get_ip(ip);
- if (dhcp_client->ipv4ll_available_cb != NULL)
+ if (dhcp_client->ipv4ll_available_cb)
dhcp_client->ipv4ll_available_cb(dhcp_client,
dhcp_client->ipv4ll_available_data);
dhcp_client->conflicts = 0;
@@ -2379,16 +2733,34 @@ int g_dhcp_client_start(GDHCPClient *dhcp_client, const char *last_address)
return re;
}
send_dhcpv6_release(dhcp_client);
+ } else if (dhcp_client->decline_cb) {
+ dhcp_client->state = DECLINE;
+ re = switch_listening_mode(dhcp_client, L3);
+ if (re != 0) {
+ switch_listening_mode(dhcp_client, L_NONE);
+ dhcp_client->state = 0;
+ return re;
+ }
+ send_dhcpv6_decline(dhcp_client);
}
return 0;
}
- if (dhcp_client->retry_times == DISCOVER_RETRIES) {
+ if (dhcp_client->type == G_DHCP_IPV4LL) {
+ dhcp_client->state = INIT_SELECTING;
ipv4ll_start(dhcp_client);
return 0;
}
+ if (dhcp_client->retry_times == DISCOVER_RETRIES) {
+ if (dhcp_client->no_lease_cb)
+ dhcp_client->no_lease_cb(dhcp_client,
+ dhcp_client->no_lease_data);
+ dhcp_client->retry_times = 0;
+ return 0;
+ }
+
if (dhcp_client->retry_times == 0) {
g_free(dhcp_client->assigned_ip);
dhcp_client->assigned_ip = NULL;
@@ -2402,10 +2774,10 @@ int g_dhcp_client_start(GDHCPClient *dhcp_client, const char *last_address)
dhcp_client->start = time(NULL);
}
- if (last_address == NULL) {
+ if (!last_address) {
addr = 0;
} else {
- addr = inet_addr(last_address);
+ addr = ntohl(inet_addr(last_address));
if (addr == 0xFFFFFFFF) {
addr = 0;
} else {
@@ -2413,6 +2785,21 @@ int g_dhcp_client_start(GDHCPClient *dhcp_client, const char *last_address)
dhcp_client->last_address = g_strdup(last_address);
}
}
+
+ if ((addr != 0) && (dhcp_client->type != G_DHCP_IPV4LL)) {
+ debug(dhcp_client, "DHCP client start with state init_reboot");
+ dhcp_client->requested_ip = addr;
+ dhcp_client->state = REBOOTING;
+ send_request(dhcp_client);
+
+ dhcp_client->timeout = g_timeout_add_seconds_full(
+ G_PRIORITY_HIGH,
+ REQUEST_TIMEOUT,
+ reboot_timeout,
+ dhcp_client,
+ NULL);
+ return 0;
+ }
send_discover(dhcp_client, addr);
dhcp_client->timeout = g_timeout_add_seconds_full(G_PRIORITY_HIGH,
@@ -2433,18 +2820,13 @@ void g_dhcp_client_stop(GDHCPClient *dhcp_client)
send_release(dhcp_client, dhcp_client->server_ip,
dhcp_client->requested_ip);
- if (dhcp_client->timeout > 0) {
- g_source_remove(dhcp_client->timeout);
- dhcp_client->timeout = 0;
- }
+ remove_timeouts(dhcp_client);
if (dhcp_client->listener_watch > 0) {
g_source_remove(dhcp_client->listener_watch);
dhcp_client->listener_watch = 0;
}
- dhcp_client->listener_channel = NULL;
-
dhcp_client->retry_times = 0;
dhcp_client->ack_retry_times = 0;
@@ -2542,6 +2924,12 @@ void g_dhcp_client_register_event(GDHCPClient *dhcp_client,
dhcp_client->confirm_cb = func;
dhcp_client->confirm_data = data;
return;
+ case G_DHCP_CLIENT_EVENT_DECLINE:
+ if (dhcp_client->type != G_DHCP_IPV6)
+ return;
+ dhcp_client->decline_cb = func;
+ dhcp_client->decline_data = data;
+ return;
}
}
@@ -2570,9 +2958,10 @@ char *g_dhcp_client_get_netmask(GDHCPClient *dhcp_client)
case RENEWING:
case REBINDING:
option = g_dhcp_client_get_option(dhcp_client, G_DHCP_SUBNET);
- if (option != NULL)
+ if (option)
return g_strdup(option->data);
case INIT_SELECTING:
+ case REBOOTING:
case REQUESTING:
case RELEASED:
case IPV4LL_PROBE:
@@ -2584,6 +2973,7 @@ char *g_dhcp_client_get_netmask(GDHCPClient *dhcp_client)
case RENEW:
case REBIND:
case RELEASE:
+ case DECLINE:
break;
}
return NULL;
@@ -2592,8 +2982,8 @@ char *g_dhcp_client_get_netmask(GDHCPClient *dhcp_client)
GDHCPClientError g_dhcp_client_set_request(GDHCPClient *dhcp_client,
unsigned int option_code)
{
- if (g_list_find(dhcp_client->request_list,
- GINT_TO_POINTER((int) option_code)) == NULL)
+ if (!g_list_find(dhcp_client->request_list,
+ GINT_TO_POINTER((int)option_code)))
dhcp_client->request_list = g_list_prepend(
dhcp_client->request_list,
(GINT_TO_POINTER((int) option_code)));
@@ -2617,7 +3007,7 @@ static uint8_t *alloc_dhcp_option(int code, const uint8_t *data, unsigned size)
uint8_t *storage;
storage = g_try_malloc(size + OPT_DATA);
- if (storage == NULL)
+ if (!storage)
return NULL;
storage[OPT_CODE] = code;
@@ -2627,7 +3017,8 @@ static uint8_t *alloc_dhcp_option(int code, const uint8_t *data, unsigned size)
return storage;
}
-static uint8_t *alloc_dhcp_data_option(int code, const uint8_t *data, unsigned size)
+static uint8_t *alloc_dhcp_data_option(int code, const uint8_t *data,
+ unsigned size)
{
return alloc_dhcp_option(code, data, MIN(size, 255));
}
@@ -2650,7 +3041,7 @@ GDHCPClientError g_dhcp_client_set_id(GDHCPClient *dhcp_client)
memcpy(&idbuf[1], dhcp_client->mac_address, maclen);
data_option = alloc_dhcp_data_option(option_code, idbuf, idlen);
- if (data_option == NULL)
+ if (!data_option)
return G_DHCP_CLIENT_ERROR_NOMEM;
g_hash_table_insert(dhcp_client->send_value_hash,
@@ -2665,10 +3056,10 @@ GDHCPClientError g_dhcp_client_set_send(GDHCPClient *dhcp_client,
{
uint8_t *binary_option;
- if (option_code == G_DHCP_HOST_NAME && option_value != NULL) {
+ if (option_code == G_DHCP_HOST_NAME && option_value) {
binary_option = alloc_dhcp_string_option(option_code,
option_value);
- if (binary_option == NULL)
+ if (!binary_option)
return G_DHCP_CLIENT_ERROR_NOMEM;
g_hash_table_insert(dhcp_client->send_value_hash,
@@ -2684,7 +3075,7 @@ static uint8_t *alloc_dhcpv6_option(uint16_t code, uint8_t *option,
uint8_t *storage;
storage = g_malloc(2 + 2 + len);
- if (storage == NULL)
+ if (!storage)
return NULL;
storage[0] = code >> 8;
@@ -2696,12 +3087,18 @@ static uint8_t *alloc_dhcpv6_option(uint16_t code, uint8_t *option,
return storage;
}
+gboolean g_dhcpv6_client_clear_send(GDHCPClient *dhcp_client, uint16_t code)
+{
+ return g_hash_table_remove(dhcp_client->send_value_hash,
+ GINT_TO_POINTER((int)code));
+}
+
void g_dhcpv6_client_set_send(GDHCPClient *dhcp_client,
uint16_t option_code,
uint8_t *option_value,
uint16_t option_len)
{
- if (option_value != NULL) {
+ if (option_value) {
uint8_t *binary_option;
debug(dhcp_client, "setting option %d to %p len %d",
@@ -2709,40 +3106,24 @@ void g_dhcpv6_client_set_send(GDHCPClient *dhcp_client,
binary_option = alloc_dhcpv6_option(option_code, option_value,
option_len);
- if (binary_option != NULL)
+ if (binary_option)
g_hash_table_insert(dhcp_client->send_value_hash,
GINT_TO_POINTER((int) option_code),
binary_option);
}
}
-void g_dhcpv6_client_reset_renew(GDHCPClient *dhcp_client)
+void g_dhcpv6_client_reset_request(GDHCPClient *dhcp_client)
{
- if (dhcp_client == NULL || dhcp_client->type != G_DHCP_IPV6)
+ if (!dhcp_client || dhcp_client->type != G_DHCP_IPV6)
return;
- dhcp_client->last_renew = time(NULL);
-}
-
-void g_dhcpv6_client_reset_rebind(GDHCPClient *dhcp_client)
-{
- if (dhcp_client == NULL || dhcp_client->type != G_DHCP_IPV6)
- return;
-
- dhcp_client->last_rebind = time(NULL);
-}
-
-void g_dhcpv6_client_set_expire(GDHCPClient *dhcp_client, uint32_t timeout)
-{
- if (dhcp_client == NULL || dhcp_client->type != G_DHCP_IPV6)
- return;
-
- dhcp_client->expire = time(NULL) + timeout;
+ dhcp_client->last_request = time(NULL);
}
uint16_t g_dhcpv6_client_get_status(GDHCPClient *dhcp_client)
{
- if (dhcp_client == NULL || dhcp_client->type != G_DHCP_IPV6)
+ if (!dhcp_client || dhcp_client->type != G_DHCP_IPV6)
return 0;
return dhcp_client->status_code;
@@ -2750,7 +3131,7 @@ uint16_t g_dhcpv6_client_get_status(GDHCPClient *dhcp_client)
GDHCPClient *g_dhcp_client_ref(GDHCPClient *dhcp_client)
{
- if (dhcp_client == NULL)
+ if (!dhcp_client)
return NULL;
__sync_fetch_and_add(&dhcp_client->ref_count, 1);
@@ -2760,7 +3141,7 @@ GDHCPClient *g_dhcp_client_ref(GDHCPClient *dhcp_client)
void g_dhcp_client_unref(GDHCPClient *dhcp_client)
{
- if (dhcp_client == NULL)
+ if (!dhcp_client)
return;
if (__sync_fetch_and_sub(&dhcp_client->ref_count, 1) != 1)
@@ -2786,9 +3167,33 @@ void g_dhcp_client_unref(GDHCPClient *dhcp_client)
void g_dhcp_client_set_debug(GDHCPClient *dhcp_client,
GDHCPDebugFunc func, gpointer user_data)
{
- if (dhcp_client == NULL)
+ if (!dhcp_client)
return;
dhcp_client->debug_func = func;
dhcp_client->debug_data = user_data;
}
+
+static GDHCPIAPrefix *copy_prefix(gpointer data)
+{
+ GDHCPIAPrefix *copy, *prefix = data;
+
+ copy = g_try_new(GDHCPIAPrefix, 1);
+ if (!copy)
+ return NULL;
+
+ memcpy(copy, prefix, sizeof(GDHCPIAPrefix));
+
+ return copy;
+}
+
+GSList *g_dhcpv6_copy_prefixes(GSList *prefixes)
+{
+ GSList *copy = NULL;
+ GSList *list;
+
+ for (list = prefixes; list; list = list->next)
+ copy = g_slist_prepend(copy, copy_prefix(list->data));
+
+ return copy;
+}