* @file vpn/gnunet-service-vpn.c
* @brief service that opens a virtual interface and allows its clients
* to allocate IPs on the virtual interface and to then redirect
- * IP traffic received on those IPs via the GNUnet mesh
+ * IP traffic received on those IPs via the GNUnet mesh
* @author Philipp Toelke
* @author Christian Grothoff
*
} service_destination;
- struct
+ struct
{
-
+
/**
* Address family used (AF_INET or AF_INET6).
*/
int af;
-
+
/**
* IP address of the ultimate destination (only used for exit tunnels).
*/
} exit_destination;
} details;
-
+
};
* This is a doubly-linked list.
*/
struct TunnelMessageQueueEntry *prev;
-
+
/**
* Number of bytes in 'msg'.
*/
/**
* Tail of list of messages scheduled for transmission.
*/
- struct TunnelMessageQueueEntry *tmq_tail;
+ struct TunnelMessageQueueEntry *tmq_tail;
/**
* Destination entry that has a pointer to this tunnel state;
* Address if af is AF_INET.
*/
struct in_addr v4;
-
+
/**
* Address if af is AF_INET6.
*/
* Address if af is AF_INET.
*/
struct in_addr v4;
-
+
/**
* Address if af is AF_INET6.
*/
switch (result_af)
{
case AF_INET:
- rlen = sizeof (struct in_addr);
+ rlen = sizeof (struct in_addr);
break;
case AF_INET6:
rlen = sizeof (struct in6_addr);
ret = tnq->len;
GNUNET_free (tnq);
if (NULL != (tnq = ts->tmq_head))
- ts->th = GNUNET_MESH_notify_transmit_ready (ts->tunnel,
- GNUNET_NO /* cork */,
+ ts->th = GNUNET_MESH_notify_transmit_ready (ts->tunnel,
+ GNUNET_NO /* cork */,
GNUNET_TIME_UNIT_FOREVER_REL,
tnq->len,
&send_to_peer_notify_callback,
ts->th = NULL;
GNUNET_STATISTICS_update (stats,
gettext_noop ("# Bytes dropped in mesh queue (overflow)"),
- dq->len,
+ dq->len,
GNUNET_NO);
GNUNET_free (dq);
}
if (NULL == ts->th)
- ts->th = GNUNET_MESH_notify_transmit_ready (ts->tunnel,
+ ts->th = GNUNET_MESH_notify_transmit_ready (ts->tunnel,
GNUNET_NO /* cork */,
GNUNET_TIME_UNIT_FOREVER_REL,
tnq->len,
char address[GNUNET_TUN_IPV4_REGEXLEN];
GNUNET_TUN_ipv4toregexsearch (&dt->destination->details.exit_destination.ip.v4,
- "255.255.255.255",
+ "255.255.255.255",
address);
GNUNET_asprintf (&policy, "%s%s%s:%u",
GNUNET_APPLICATION_TYPE_EXIT_REGEX_PREFIX,
case AF_INET6:
{
char address[GNUNET_TUN_IPV6_REGEXLEN];
-
+
GNUNET_TUN_ipv6toregexsearch (&dt->destination->details.exit_destination.ip.v6,
128, address);
GNUNET_asprintf (&policy, "%s%s%s:%u",
/**
- * Route a packet via mesh to the given destination.
+ * Route a packet via mesh to the given destination.
*
* @param destination description of the destination
* @param af address family on this end (AF_INET or AF_INET6)
/* blame kernel? */
GNUNET_break (0);
return;
- }
+ }
udp = NULL; /* make compiler happy */
icmp = NULL; /* make compiler happy */
tcp = payload;
&key);
}
break;
- case IPPROTO_ICMP:
- case IPPROTO_ICMPV6:
+ case IPPROTO_ICMP:
+ case IPPROTO_ICMPV6:
{
if ( (AF_INET == af) ^ (protocol == IPPROTO_ICMP) )
{
}
alen = 0;
if (! destination->is_service)
- {
+ {
switch (destination->details.exit_destination.af)
{
case AF_INET:
char sbuf[INET6_ADDRSTRLEN];
char dbuf[INET6_ADDRSTRLEN];
char xbuf[INET6_ADDRSTRLEN];
-
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Routing %s packet from %s:%u -> %s:%u to destination %s:%u\n",
(protocol == IPPROTO_TCP) ? "TCP" : "UDP",
{
char sbuf[INET6_ADDRSTRLEN];
char dbuf[INET6_ADDRSTRLEN];
-
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Routing %s packet from %s:%u -> %s:%u to service %s at peer %s\n",
(protocol == IPPROTO_TCP) ? "TCP" : "UDP",
ts->destination_container = NULL; /* no longer 'contained' */
/* now bind existing "unbound" tunnel to our IP/port tuple */
ts->protocol = protocol;
- ts->af = af;
+ ts->af = af;
if (AF_INET == af)
{
ts->source_ip.v4 = * (const struct in_addr *) source_ip;
GNUNET_CONTAINER_multihashmap_put (tunnel_map,
&key,
ts,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
GNUNET_STATISTICS_update (stats,
gettext_noop ("# Active tunnels"),
1, GNUNET_NO);
else
{
is_new = GNUNET_NO;
- GNUNET_CONTAINER_heap_update_cost (tunnel_heap,
+ GNUNET_CONTAINER_heap_update_cost (tunnel_heap,
ts->heap_node,
GNUNET_TIME_absolute_get ().abs_value_us);
}
GNUNET_assert (NULL != ts->tunnel);
-
+
/* send via tunnel */
switch (protocol)
{
{
struct GNUNET_EXIT_UdpServiceMessage *usm;
- mlen = sizeof (struct GNUNET_EXIT_UdpServiceMessage) +
+ mlen = sizeof (struct GNUNET_EXIT_UdpServiceMessage) +
payload_length - sizeof (struct GNUNET_TUN_UdpHeader);
if (mlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
{
struct in6_addr *ip6dst;
void *payload;
- mlen = sizeof (struct GNUNET_EXIT_UdpInternetMessage) +
+ mlen = sizeof (struct GNUNET_EXIT_UdpInternetMessage) +
alen + payload_length - sizeof (struct GNUNET_TUN_UdpHeader);
if (mlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
{
tnq->msg = &tnq[1];
uim = (struct GNUNET_EXIT_UdpInternetMessage *) &tnq[1];
uim->header.size = htons ((uint16_t) mlen);
- uim->header.type = htons (GNUNET_MESSAGE_TYPE_VPN_UDP_TO_INTERNET);
+ uim->header.type = htons (GNUNET_MESSAGE_TYPE_VPN_UDP_TO_INTERNET);
uim->af = htonl (destination->details.exit_destination.af);
uim->source_port = (ntohs (udp->source_port) < 32000) ? udp->source_port : 0;
uim->destination_port = udp->destination_port;
{
struct GNUNET_EXIT_TcpServiceStartMessage *tsm;
- mlen = sizeof (struct GNUNET_EXIT_TcpServiceStartMessage) +
+ mlen = sizeof (struct GNUNET_EXIT_TcpServiceStartMessage) +
payload_length - sizeof (struct GNUNET_TUN_TcpHeader);
if (mlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
{
struct in6_addr *ip6dst;
void *payload;
- mlen = sizeof (struct GNUNET_EXIT_TcpInternetStartMessage) +
+ mlen = sizeof (struct GNUNET_EXIT_TcpInternetStartMessage) +
alen + payload_length - sizeof (struct GNUNET_TUN_TcpHeader);
if (mlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
{
{
struct GNUNET_EXIT_TcpDataMessage *tdm;
- mlen = sizeof (struct GNUNET_EXIT_TcpDataMessage) +
+ mlen = sizeof (struct GNUNET_EXIT_TcpDataMessage) +
payload_length - sizeof (struct GNUNET_TUN_TcpHeader);
if (mlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
{
{
struct GNUNET_EXIT_IcmpServiceMessage *ism;
- mlen = sizeof (struct GNUNET_EXIT_IcmpServiceMessage) +
+ mlen = sizeof (struct GNUNET_EXIT_IcmpServiceMessage) +
payload_length - sizeof (struct GNUNET_TUN_IcmpHeader);
if (mlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
{
case GNUNET_TUN_ICMPTYPE_SOURCE_QUENCH:
case GNUNET_TUN_ICMPTYPE_TIME_EXCEEDED:
/* throw away ICMP payload, won't be useful for the other side anyway */
- payload_length = sizeof (struct GNUNET_TUN_IcmpHeader);
+ payload_length = sizeof (struct GNUNET_TUN_IcmpHeader);
break;
default:
GNUNET_STATISTICS_update (stats,
case GNUNET_TUN_ICMPTYPE6_TIME_EXCEEDED:
case GNUNET_TUN_ICMPTYPE6_PARAMETER_PROBLEM:
/* throw away ICMP payload, won't be useful for the other side anyway */
- payload_length = sizeof (struct GNUNET_TUN_IcmpHeader);
+ payload_length = sizeof (struct GNUNET_TUN_IcmpHeader);
break;
case GNUNET_TUN_ICMPTYPE6_ECHO_REQUEST:
case GNUNET_TUN_ICMPTYPE6_ECHO_REPLY:
}
/* update length calculations, as payload_length may have changed */
- mlen = sizeof (struct GNUNET_EXIT_IcmpServiceMessage) +
- alen + payload_length - sizeof (struct GNUNET_TUN_IcmpHeader);
+ mlen = sizeof (struct GNUNET_EXIT_IcmpServiceMessage) +
+ alen + payload_length - sizeof (struct GNUNET_TUN_IcmpHeader);
tnq->len = mlen;
ism->header.size = htons ((uint16_t) mlen);
/* finally, copy payload (if there is any left...) */
struct in6_addr *ip6dst;
void *payload;
- mlen = sizeof (struct GNUNET_EXIT_IcmpInternetMessage) +
+ mlen = sizeof (struct GNUNET_EXIT_IcmpInternetMessage) +
alen + payload_length - sizeof (struct GNUNET_TUN_IcmpHeader);
if (mlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
{
tnq = GNUNET_malloc (sizeof (struct TunnelMessageQueueEntry) + mlen);
tnq->msg = &tnq[1];
iim = (struct GNUNET_EXIT_IcmpInternetMessage *) &tnq[1];
- iim->header.type = htons (GNUNET_MESSAGE_TYPE_VPN_ICMP_TO_INTERNET);
+ iim->header.type = htons (GNUNET_MESSAGE_TYPE_VPN_ICMP_TO_INTERNET);
iim->icmp_header = *icmp;
/* Perform ICMP protocol-translation (depending on destination AF and source AF)
and throw away ICMP payload depending on ICMP message type */
case AF_INET:
switch (icmp->type)
{
- case GNUNET_TUN_ICMPTYPE_ECHO_REPLY:
+ case GNUNET_TUN_ICMPTYPE_ECHO_REPLY:
if (destination->details.exit_destination.af == AF_INET6)
iim->icmp_header.type = GNUNET_TUN_ICMPTYPE6_ECHO_REPLY;
break;
- case GNUNET_TUN_ICMPTYPE_ECHO_REQUEST:
+ case GNUNET_TUN_ICMPTYPE_ECHO_REQUEST:
if (destination->details.exit_destination.af == AF_INET6)
iim->icmp_header.type = GNUNET_TUN_ICMPTYPE6_ECHO_REQUEST;
break;
GNUNET_STATISTICS_update (stats,
gettext_noop ("# ICMPv4 packets dropped (type not allowed)"),
1, GNUNET_NO);
- GNUNET_free (tnq);
+ GNUNET_free (tnq);
return;
}
/* end of AF_INET */
GNUNET_STATISTICS_update (stats,
gettext_noop ("# ICMPv6 packets dropped (type not allowed)"),
1, GNUNET_NO);
- GNUNET_free (tnq);
+ GNUNET_free (tnq);
return;
}
/* end of AF_INET6 */
break;
default:
GNUNET_assert (0);
- }
+ }
/* update length calculations, as payload_length may have changed */
- mlen = sizeof (struct GNUNET_EXIT_IcmpInternetMessage) +
- alen + payload_length - sizeof (struct GNUNET_TUN_IcmpHeader);
+ mlen = sizeof (struct GNUNET_EXIT_IcmpInternetMessage) +
+ alen + payload_length - sizeof (struct GNUNET_TUN_IcmpHeader);
tnq->len = mlen;
iim->header.size = htons ((uint16_t) mlen);
case ETH_P_IPV6:
{
const struct GNUNET_TUN_IPv6Header *pkt6;
-
+
if (mlen < sizeof (struct GNUNET_TUN_IPv6Header))
{
/* blame kernel */
route_packet (de,
AF_INET6,
pkt6->next_header,
- &pkt6->source_address,
- &pkt6->destination_address,
+ &pkt6->source_address,
+ &pkt6->destination_address,
&pkt6[1],
mlen - sizeof (struct GNUNET_TUN_IPv6Header));
}
if (pkt4->header_length * 4 != sizeof (struct GNUNET_TUN_IPv4Header))
{
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _("Received IPv4 packet with options (dropping it)\n"));
+ _("Received IPv4 packet with options (dropping it)\n"));
return GNUNET_OK;
}
route_packet (de,
AF_INET,
pkt4->protocol,
- &pkt4->source_address,
- &pkt4->destination_address,
+ &pkt4->source_address,
+ &pkt4->destination_address,
&pkt4[1],
mlen - sizeof (struct GNUNET_TUN_IPv4Header));
}
* @param message the actual message
* @return #GNUNET_OK to keep the connection open,
* #GNUNET_SYSERR to close it (signal serious error)
- */
+ */
static int
receive_icmp_back (void *cls,
struct GNUNET_MESH_Tunnel *tunnel,
{
char sbuf[INET6_ADDRSTRLEN];
char dbuf[INET6_ADDRSTRLEN];
-
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received ICMP packet from mesh, sending %u bytes from %s -> %s via TUN\n",
(unsigned int) mlen,
{
case AF_INET:
{
- size_t size = sizeof (struct GNUNET_TUN_IPv4Header)
- + sizeof (struct GNUNET_TUN_IcmpHeader)
+ size_t size = sizeof (struct GNUNET_TUN_IPv4Header)
+ + sizeof (struct GNUNET_TUN_IcmpHeader)
+ sizeof (struct GNUNET_MessageHeader) +
sizeof (struct GNUNET_TUN_Layer2PacketHeader) +
mlen;
memcpy (&icmp[1],
&i2v[1],
mlen);
- /* For some ICMP types, we need to adjust (make up) the payload here.
- Also, depending on the AF used on the other side, we have to
+ /* For some ICMP types, we need to adjust (make up) the payload here.
+ Also, depending on the AF used on the other side, we have to
do ICMP PT (translate ICMP types) */
switch (ntohl (i2v->af))
{
- case AF_INET:
+ case AF_INET:
switch (icmp->type)
{
case GNUNET_TUN_ICMPTYPE_ECHO_REPLY:
break;
case GNUNET_TUN_ICMPTYPE_DESTINATION_UNREACHABLE:
case GNUNET_TUN_ICMPTYPE_SOURCE_QUENCH:
- case GNUNET_TUN_ICMPTYPE_TIME_EXCEEDED:
+ case GNUNET_TUN_ICMPTYPE_TIME_EXCEEDED:
{
struct GNUNET_TUN_IPv4Header *ipp = (struct GNUNET_TUN_IPv4Header *) &icmp[1];
struct GNUNET_TUN_UdpHeader *udp = (struct GNUNET_TUN_UdpHeader *) &ipp[1];
-
+
if (mlen != 0)
{
/* sender did not strip ICMP payload? */
{
struct GNUNET_TUN_IPv4Header *ipp = (struct GNUNET_TUN_IPv4Header *) &icmp[1];
struct GNUNET_TUN_UdpHeader *udp = (struct GNUNET_TUN_UdpHeader *) &ipp[1];
-
+
if (mlen != 0)
{
/* sender did not strip ICMP payload? */
{
struct GNUNET_TUN_IPv4Header *ipp = (struct GNUNET_TUN_IPv4Header *) &icmp[1];
struct GNUNET_TUN_UdpHeader *udp = (struct GNUNET_TUN_UdpHeader *) &ipp[1];
-
+
if (mlen != 0)
{
/* sender did not strip ICMP payload? */
break;
case AF_INET6:
{
- size_t size = sizeof (struct GNUNET_TUN_IPv6Header)
- + sizeof (struct GNUNET_TUN_IcmpHeader)
+ size_t size = sizeof (struct GNUNET_TUN_IPv6Header)
+ + sizeof (struct GNUNET_TUN_IcmpHeader)
+ sizeof (struct GNUNET_MessageHeader) +
sizeof (struct GNUNET_TUN_Layer2PacketHeader) +
mlen;
&i2v[1],
mlen);
- /* For some ICMP types, we need to adjust (make up) the payload here.
- Also, depending on the AF used on the other side, we have to
+ /* For some ICMP types, we need to adjust (make up) the payload here.
+ Also, depending on the AF used on the other side, we have to
do ICMP PT (translate ICMP types) */
switch (ntohl (i2v->af))
{
- case AF_INET:
+ case AF_INET:
/* ICMP PT 4-to-6 and possibly making up payloads */
switch (icmp->type)
{
{
struct GNUNET_TUN_IPv6Header *ipp = (struct GNUNET_TUN_IPv6Header *) &icmp[1];
struct GNUNET_TUN_UdpHeader *udp = (struct GNUNET_TUN_UdpHeader *) &ipp[1];
-
+
if (mlen != 0)
{
/* sender did not strip ICMP payload? */
make_up_icmpv6_payload (ts, ipp, udp);
}
break;
- case GNUNET_TUN_ICMPTYPE_TIME_EXCEEDED:
+ case GNUNET_TUN_ICMPTYPE_TIME_EXCEEDED:
icmp->type = GNUNET_TUN_ICMPTYPE6_TIME_EXCEEDED;
{
struct GNUNET_TUN_IPv6Header *ipp = (struct GNUNET_TUN_IPv6Header *) &icmp[1];
struct GNUNET_TUN_UdpHeader *udp = (struct GNUNET_TUN_UdpHeader *) &ipp[1];
-
+
if (mlen != 0)
{
/* sender did not strip ICMP payload? */
case GNUNET_TUN_ICMPTYPE_SOURCE_QUENCH:
GNUNET_STATISTICS_update (stats,
gettext_noop ("# ICMPv4 packets dropped (impossible PT to v6)"),
- 1, GNUNET_NO);
+ 1, GNUNET_NO);
return GNUNET_OK;
default:
GNUNET_break_op (0);
{
struct GNUNET_TUN_IPv6Header *ipp = (struct GNUNET_TUN_IPv6Header *) &icmp[1];
struct GNUNET_TUN_UdpHeader *udp = (struct GNUNET_TUN_UdpHeader *) &ipp[1];
-
+
if (mlen != 0)
{
/* sender did not strip ICMP payload? */
default:
GNUNET_assert (0);
}
- GNUNET_CONTAINER_heap_update_cost (tunnel_heap,
+ GNUNET_CONTAINER_heap_update_cost (tunnel_heap,
ts->heap_node,
GNUNET_TIME_absolute_get ().abs_value_us);
return GNUNET_OK;
* @param message the actual message
* @return #GNUNET_OK to keep the connection open,
* #GNUNET_SYSERR to close it (signal serious error)
- */
+ */
static int
receive_udp_back (void *cls,
struct GNUNET_MESH_Tunnel *tunnel,
{
char sbuf[INET6_ADDRSTRLEN];
char dbuf[INET6_ADDRSTRLEN];
-
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received UDP reply from mesh, sending %u bytes from %s:%u -> %s:%u via TUN\n",
(unsigned int) mlen,
{
case AF_INET:
{
- size_t size = sizeof (struct GNUNET_TUN_IPv4Header)
- + sizeof (struct GNUNET_TUN_UdpHeader)
+ size_t size = sizeof (struct GNUNET_TUN_IPv4Header)
+ + sizeof (struct GNUNET_TUN_UdpHeader)
+ sizeof (struct GNUNET_MessageHeader) +
sizeof (struct GNUNET_TUN_Layer2PacketHeader) +
mlen;
break;
case AF_INET6:
{
- size_t size = sizeof (struct GNUNET_TUN_IPv6Header)
- + sizeof (struct GNUNET_TUN_UdpHeader)
+ size_t size = sizeof (struct GNUNET_TUN_IPv6Header)
+ + sizeof (struct GNUNET_TUN_UdpHeader)
+ sizeof (struct GNUNET_MessageHeader) +
sizeof (struct GNUNET_TUN_Layer2PacketHeader) +
mlen;
default:
GNUNET_assert (0);
}
- GNUNET_CONTAINER_heap_update_cost (tunnel_heap,
+ GNUNET_CONTAINER_heap_update_cost (tunnel_heap,
ts->heap_node,
GNUNET_TIME_absolute_get ().abs_value_us);
return GNUNET_OK;
* @param message the actual message
* @return #GNUNET_OK to keep the connection open,
* #GNUNET_SYSERR to close it (signal serious error)
- */
+ */
static int
receive_tcp_back (void *cls,
struct GNUNET_MESH_Tunnel *tunnel,
{
char sbuf[INET6_ADDRSTRLEN];
char dbuf[INET6_ADDRSTRLEN];
-
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received TCP reply from mesh, sending %u bytes from %s:%u -> %s:%u via TUN\n",
(unsigned int) mlen,
{
case AF_INET:
{
- size_t size = sizeof (struct GNUNET_TUN_IPv4Header)
- + sizeof (struct GNUNET_TUN_TcpHeader)
+ size_t size = sizeof (struct GNUNET_TUN_IPv4Header)
+ + sizeof (struct GNUNET_TUN_TcpHeader)
+ sizeof (struct GNUNET_MessageHeader) +
sizeof (struct GNUNET_TUN_Layer2PacketHeader) +
mlen;
break;
case AF_INET6:
{
- size_t size = sizeof (struct GNUNET_TUN_IPv6Header)
- + sizeof (struct GNUNET_TUN_TcpHeader)
+ size_t size = sizeof (struct GNUNET_TUN_IPv6Header)
+ + sizeof (struct GNUNET_TUN_TcpHeader)
+ sizeof (struct GNUNET_MessageHeader) +
sizeof (struct GNUNET_TUN_Layer2PacketHeader) +
mlen;
}
break;
}
- GNUNET_CONTAINER_heap_update_cost (tunnel_heap,
+ GNUNET_CONTAINER_heap_update_cost (tunnel_heap,
ts->heap_node,
GNUNET_TIME_absolute_get ().abs_value_us);
return GNUNET_OK;
unsigned int tries;
GNUNET_assert (1 == inet_pton (AF_INET, ipv4addr, &addr));
- GNUNET_assert (1 == inet_pton (AF_INET, ipv4mask, &mask));
- /* Given 192.168.0.1/255.255.0.0, we want a mask
+ GNUNET_assert (1 == inet_pton (AF_INET, ipv4mask, &mask));
+ /* Given 192.168.0.1/255.255.0.0, we want a mask
of '192.168.255.255', thus: */
- mask.s_addr = addr.s_addr | ~mask.s_addr;
+ mask.s_addr = addr.s_addr | ~mask.s_addr;
tries = 0;
do
{
return GNUNET_SYSERR;
}
/* Pick random IPv4 address within the subnet, except 'addr' or 'mask' itself */
- rnd.s_addr = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
+ rnd.s_addr = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
UINT32_MAX);
- v4->s_addr = (addr.s_addr | rnd.s_addr) & mask.s_addr;
+ v4->s_addr = (addr.s_addr | rnd.s_addr) & mask.s_addr;
get_destination_key_from_ip (AF_INET,
v4,
&key);
mask = addr;
for (i=127;i>=ipv6prefix;i--)
mask.s6_addr[i / 8] |= (1 << (i % 8));
-
+
/* Pick random IPv6 address within the subnet, except 'addr' or 'mask' itself */
tries = 0;
do
}
for (i=0;i<16;i++)
{
- rnd.s6_addr[i] = (unsigned char) GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
+ rnd.s6_addr[i] = (unsigned char) GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
256);
v6->s6_addr[i]
= (addr.s6_addr[i] | rnd.s6_addr[i]) & mask.s6_addr[i];
if (NULL != de->heap_node)
{
GNUNET_CONTAINER_heap_remove_node (de->heap_node);
- de->heap_node = NULL;
+ de->heap_node = NULL;
GNUNET_assert (GNUNET_YES ==
GNUNET_CONTAINER_multihashmap_remove (destination_map,
&de->key,
*
* @param except destination that must NOT be cleaned up, even if it is the oldest
*/
-static void
+static void
expire_destination (struct DestinationEntry *except)
{
struct DestinationEntry *de;
/**
- * Allocate an IP address for the response.
+ * Allocate an IP address for the response.
*
* @param result_af desired address family; set to the actual
* address family; can initially be AF_UNSPEC if there
* is no preference; will be set to AF_UNSPEC if the
* allocation failed
- * @param addr set to either v4 or v6 depending on which
+ * @param addr set to either v4 or v6 depending on which
* storage location was used; set to NULL if allocation failed
* @param v4 storage space for an IPv4 address
* @param v6 storage space for an IPv6 address
return GNUNET_SYSERR;
}
return GNUNET_OK;
-}
+}
/**
void *addr;
struct DestinationEntry *de;
struct GNUNET_HashCode key;
-
+
/* validate and parse request */
mlen = ntohs (message->size);
if (mlen < sizeof (struct RedirectToIpRequestMessage))
{
GNUNET_break (0);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
+ return;
}
break;
case AF_INET6:
{
GNUNET_break (0);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
+ return;
}
break;
default:
GNUNET_break (0);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
+ return;
}
/* allocate response IP */
&v4, &v6))
{
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
+ return;
}
/* send reply with our IP address */
send_client_reply (client,
msg->request_id,
result_af,
- addr);
+ addr);
if (result_af == AF_UNSPEC)
{
/* failure, we're done */
{
char sbuf[INET6_ADDRSTRLEN];
char dbuf[INET6_ADDRSTRLEN];
-
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Allocated address %s for redirection via exit to %s\n",
inet_ntop (result_af, addr, sbuf, sizeof (sbuf)),
inet_ntop (addr_af,
&msg[1], dbuf, sizeof (dbuf)));
}
-
+
/* setup destination record */
de = GNUNET_new (struct DestinationEntry);
de->is_service = GNUNET_NO;
* @param message redirection request (a `struct RedirectToPeerRequestMessage`)
*/
static void
-service_redirect_to_service (void *cls,
+service_redirect_to_service (void *cls,
struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
struct GNUNET_HashCode key;
struct TunnelState *ts;
struct DestinationTunnel *dt;
-
+
/* parse request */
msg = (const struct RedirectToServiceRequestMessage *) message;
&v4, &v6))
{
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
+ return;
}
send_client_reply (client,
msg->request_id,
result_af,
- addr);
+ addr);
if (result_af == AF_UNSPEC)
{
/* failure, we're done */
{
char sbuf[INET6_ADDRSTRLEN];
-
+
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Allocated address %s for redirection to service %s on peer %s\n",
inet_ntop (result_af, addr, sbuf, sizeof (sbuf)),
GNUNET_h2s (&msg->service_descriptor),
GNUNET_i2s (&msg->target));
}
-
+
/* setup destination record */
de = GNUNET_new (struct DestinationEntry);
de->is_service = GNUNET_YES;
/**
* Function called whenever a tunnel is destroyed. Should clean up
* any associated state.
- *
+ *
* @param cls closure (set from #GNUNET_MESH_connect)
* @param tunnel connection to the other end (henceforth invalid)
* @param tunnel_ctx place where local state associated
* with the tunnel is stored (our `struct TunnelState`)
- */
+ */
static void
-tunnel_cleaner (void *cls,
- const struct GNUNET_MESH_Tunnel *tunnel,
+tunnel_cleaner (void *cls,
+ const struct GNUNET_MESH_Tunnel *tunnel,
void *tunnel_ctx)
{
struct TunnelState *ts = tunnel_ctx;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"VPN is shutting down\n");
if (NULL != destination_map)
- {
+ {
GNUNET_CONTAINER_multihashmap_iterate (destination_map,
&cleanup_destination,
NULL);
destination_heap = NULL;
}
if (NULL != tunnel_map)
- {
+ {
GNUNET_CONTAINER_multihashmap_iterate (tunnel_map,
&cleanup_tunnel,
NULL);
static const struct GNUNET_SERVER_MessageHandler service_handlers[] = {
/* callback, cls, type, size */
{ &service_redirect_to_ip, NULL, GNUNET_MESSAGE_TYPE_VPN_CLIENT_REDIRECT_TO_IP, 0},
- { &service_redirect_to_service, NULL,
- GNUNET_MESSAGE_TYPE_VPN_CLIENT_REDIRECT_TO_SERVICE,
+ { &service_redirect_to_service, NULL,
+ GNUNET_MESSAGE_TYPE_VPN_CLIENT_REDIRECT_TO_SERVICE,
sizeof (struct RedirectToServiceRequestMessage) },
{NULL, NULL, 0, 0}
};
&ipv6addr) ||
(1 != inet_pton (AF_INET6, ipv6addr, &v6))) )
{
- GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR, "VPN", "IPV6ADDR",
+ GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR, "VPN", "IPV6ADDR",
_("Must specify valid IPv6 address"));
GNUNET_SCHEDULER_shutdown ();
return;
&ipv4addr) ||
(1 != inet_pton (AF_INET, ipv4addr, &v4))) )
{
- GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR, "VPN", "IPV4ADDR",
+ GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR, "VPN", "IPV4ADDR",
_("Must specify valid IPv4 address"));
GNUNET_SCHEDULER_shutdown ();
return;
vpn_argv[6] = NULL;
mesh_handle =
- GNUNET_MESH_connect (cfg_, NULL,
- NULL,
- &tunnel_cleaner,
+ GNUNET_MESH_connect (cfg_, NULL,
+ NULL,
+ &tunnel_cleaner,
mesh_handlers,
NULL);
helper_handle = GNUNET_HELPER_start (GNUNET_NO,
main (int argc, char *const *argv)
{
return (GNUNET_OK ==
- GNUNET_SERVICE_run (argc, argv, "vpn",
+ GNUNET_SERVICE_run (argc, argv, "vpn",
GNUNET_SERVICE_OPTION_NONE,
&run, NULL)) ? global_ret : 1;
}
projects / oweals / gnunet.git / blobdiff