44#include "gnunet_signatures.h"
54#define DEFAULT_REKEY_TIME_INTERVAL GNUNET_TIME_UNIT_DAYS
59#define PROTO_QUEUE_TIMEOUT GNUNET_TIME_UNIT_MINUTES
64#define BROADCAST_FREQUENCY GNUNET_TIME_UNIT_MINUTES
69#define INTERFACE_SCAN_FREQUENCY \
70 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5)
76#define ADDRESS_VALIDITY_PERIOD GNUNET_TIME_UNIT_HOURS
78#define WORKING_QUEUE_INTERVALL \
79 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MICROSECONDS,1)
84#define AES_KEY_SIZE (256 / 8)
89#define AES_IV_SIZE (96 / 8)
94#define GCM_TAG_SIZE (128 / 8)
96#define GENERATE_AT_ONCE 64
107#define KCN_THRESHOLD 96
115#define KCN_TARGET 128
126#define MAX_SQN_DELTA 160
137#define MAX_SECRETS 256
143#define DEFAULT_REKEY_MAX_BYTES (1024LLU * 1024 * 1024 * 4LLU)
149#define COMMUNICATOR_ADDRESS_PREFIX "udp"
154#define COMMUNICATOR_CONFIG_SECTION "communicator-udp"
867 if (AF_INET6 == bi->
sa->sa_family)
899 "Disconnecting receiver for peer `%s'\n",
918 "# receivers active",
958 uint32_t sid = htonl (serial);
1020 "secret %s destroy %u\n",
1028 "%u sender->num_secrets %u allowed %u used, %u available\n",
1044 "%u receiver->num_secrets\n",
1096 uint32_t sid = htonl (serial);
1108 strlen (
"UDP-IV-KEY"),
1168 "Receiver timed out\n");
1177 if (0 !=
st.rel_value_us)
1205 strlen (
"UDP-CMAC"),
1221 const void *plaintext,
1222 size_t plaintext_len)
1225 const char *pos = plaintext;
1227 while (ntohs (hdr->
size) <= plaintext_len)
1230 "# bytes given to core",
1234 "Giving %u bytes to TNG\n", ntohs (hdr->
size));
1244 plaintext_len -= ntohs (hdr->
size);
1245 if (plaintext_len <
sizeof(*hdr))
1247 pos += ntohs (hdr->
size);
1254 "# bytes padding discarded",
1271 gcry_cipher_hd_t *cipher)
1278 gcry_cipher_open (cipher,
1281 GCRY_CIPHER_MODE_GCM,
1284 rc = gcry_cipher_setkey (*cipher,
key,
sizeof(
key));
1285 GNUNET_assert ((0 == rc) || ((
char) rc == GPG_ERR_WEAK_KEY));
1286 rc = gcry_cipher_setiv (*cipher, iv,
sizeof(iv));
1287 GNUNET_assert ((0 == rc) || ((
char) rc == GPG_ERR_WEAK_KEY));
1311 gcry_cipher_hd_t cipher;
1316 gcry_cipher_decrypt (cipher, out_buf, in_buf_size, in_buf, in_buf_size));
1317 if (0 != gcry_cipher_checktag (cipher, tag,
GCM_TAG_SIZE))
1319 gcry_cipher_close (cipher);
1321 "# AEAD authentication failures",
1326 gcry_cipher_close (cipher);
1386 memcpy (&ss->
master, &k, sizeof (k));
1413 representative, &k);
1415 memcpy (&ss->
master, &k, sizeof (k));
1448 unsigned int deleted = 0;
1451 "Purging secrets.\n");
1459 if (rekey_max_bytes <= ss_to_purge->
bytes_sent)
1466 "Finished purging all, deleted %u.\n", deleted);
1502 "Tell transport we have %u more acks!\n",
1527 const struct UDPAck *ack = cls;
1529 uint32_t acks_to_add;
1533 "in handle ack with cmac %s\n",
1543 "Found matching cmac\n");
1547 if (allowed <= ss->sequence_allowed)
1550 "Ignoring ack, not giving us increased window\n.");
1553 acks_to_add = (allowed - ss->sequence_allowed);
1555 receiver->acks_available += (allowed - ss->sequence_allowed);
1556 ss->sequence_allowed = allowed;
1559 "New sequence allows until %u (+%u). Acks available to us: %u. For secret %s\n",
1568 "Matching cmac not found for ack!\n");
1587 "Considering SS UDPAck %s\n",
1591 "Sender has %u acks available.\n",
1605 "Notifying transport with UDPAck %s, sequence %u and master %s\n",
1623 "Precomputing %u keys for master %s\n",
1667 const struct UDPAck *ack;
1670 const char *buf_pos = buf;
1671 size_t bytes_remaining = buf_size;
1675 if (
sizeof(*hdr) > bytes_remaining)
1681 "try_handle_plaintext of size %llu (%u %lu) and type %u\n",
1682 (
unsigned long long) bytes_remaining,
1686 if (ntohs (hdr->
size) > bytes_remaining)
1692 rekey = (
struct UDPRekey*) buf_pos;
1694 ss_rekey->
sender = sender;
1698 "Received rekey secret with cmac %s\n",
1701 "Received secret with master %s.\n",
1704 "We have %u sequence_allowed.\n",
1707 "We have a sender %p\n",
1710 "We have %u acks available.\n",
1713 "# rekeying successful",
1725 buf_pos += ntohs (hdr->
size);
1726 bytes_remaining -= ntohs (hdr->
size);
1739 ack = (
struct UDPAck*) buf_pos;
1745 buf_pos += ntohs (hdr->
size);
1746 bytes_remaining -= ntohs (hdr->
size);
1776 int ss_destroyed = 0;
1777 char out_buf[box_len -
sizeof(*box)];
1783 (
const char *) &box[1],
1789 "# Decryption failures with valid KCE",
1802 "# bytes decrypted with BOX",
1806 "# messages decrypted with BOX",
1810 "decrypted UDPBox with kid %s\n",
1814 while (NULL != ss_c)
1819 "Removing SS because rekey bytes reached.\n");
1820 ss_tmp = ss_c->
prev;
1829 if (1 == ss_destroyed)
1832 "Sender has %u ack left.\n",
1839 "Sender has %u ack left which is under threshold.\n",
1884 const struct sockaddr *
address,
1903 sender->
key = sender_key;
1904 sender->
target = *target;
1952 &
uc->sender.public_key);
1966 socklen_t address_len)
2001 struct sockaddr_storage sa;
2002 struct sockaddr_in *addr_verify;
2003 socklen_t salen =
sizeof(sa);
2004 char buf[UINT16_MAX];
2017 (
struct sockaddr *) &sa,
2021 struct sockaddr *addr = (
struct sockaddr*) &sa;
2023 if (EAGAIN == errno)
2026 "Failed to recv from %s family %d failed sock %p\n",
2035 "Read %llu bytes\n",
2036 (
unsigned long long) rcvd);
2041 "Read 0 bytes from UDP socket\n");
2046 if (rcvd >
sizeof(
struct UDPBox))
2048 const struct UDPBox *box;
2051 box = (
const struct UDPBox *) buf;
2056 "Found KCE with kid %s\n",
2071 addr_verify->sin_port = 0;
2073 "received UDPBroadcast from %s\n",
2074 GNUNET_a2s ((
const struct sockaddr *) addr_verify, salen));
2085 "Received our own broadcast\n");
2090 "checking UDPBroadcastSignature for %s\n",
2111 "validating address %s received from UDPBroadcast\n",
2121 "VerifyingPeer %s is verifying UDPBroadcast\n",
2124 "Verifying UDPBroadcast from %s failed\n",
2136 "# messages dropped (no kid, too small for KX)",
2146 char pbuf[rcvd -
sizeof(
struct InitialKX)];
2163 "Unable to decrypt tag, dropping...\n");
2167 "# messages dropped (no kid, AEAD decryption failed)",
2185 "# messages dropped (sender signature invalid)",
2191 "Before SETUP_SENDER\n");
2194 sender =
setup_sender (&
uc->sender, (
const struct sockaddr *) &sa, salen);
2210 "# messages decrypted without BOX",
2234static struct sockaddr *
2237 struct sockaddr *in;
2243 if (1 == sscanf (bindto,
"%u%1s", &
port,
dummy))
2246 if (
port > UINT16_MAX)
2249 "BINDTO specification `%s' invalid: value too large for port\n",
2255 struct sockaddr_in *i4;
2258 i4->sin_family = AF_INET;
2259 i4->sin_port = htons ((uint16_t)
port);
2260 *sock_len =
sizeof(
struct sockaddr_in);
2261 in = (
struct sockaddr *) i4;
2265 struct sockaddr_in6 *i6;
2268 i6->sin6_family = AF_INET6;
2269 i6->sin6_port = htons ((uint16_t)
port);
2270 *sock_len =
sizeof(
struct sockaddr_in6);
2271 in = (
struct sockaddr *) i6;
2276 colon = strrchr (cp,
':');
2282 if (1 == sscanf (colon,
"%u%1s", &
port,
dummy))
2285 if (
port > UINT16_MAX)
2288 "BINDTO specification `%s' invalid: value too large for port\n",
2298 "BINDTO specification `%s' invalid: last ':' not followed by number\n",
2311 struct sockaddr_in v4;
2313 memset (&v4, 0,
sizeof(v4));
2314 if (1 == inet_pton (AF_INET, cp, &v4.sin_addr))
2316 v4.sin_family = AF_INET;
2317 v4.sin_port = htons ((uint16_t)
port);
2318#if HAVE_SOCKADDR_IN_SIN_LEN
2319 v4.sin_len =
sizeof(
struct sockaddr_in);
2322 *sock_len =
sizeof(
struct sockaddr_in);
2329 struct sockaddr_in6 v6;
2332 memset (&v6, 0,
sizeof(v6));
2334 if ((
'[' == *cp) && (
']' == cp[strlen (cp) - 1]))
2337 cp[strlen (cp) - 1] =
'\0';
2339 if (1 == inet_pton (AF_INET6,
start, &v6.sin6_addr))
2341 v6.sin6_family = AF_INET6;
2342 v6.sin6_port = htons ((uint16_t)
port);
2343#if HAVE_SOCKADDR_IN_SIN_LEN
2344 v6.sin6_len =
sizeof(
struct sockaddr_in6);
2347 *sock_len =
sizeof(v6);
2366do_pad (gcry_cipher_hd_t out_cipher,
char *dgram,
size_t pad_size)
2374 { .
size = htons (
sizeof(pad)),
2377 memcpy (pad, &hdr,
sizeof(hdr));
2381 gcry_cipher_encrypt (out_cipher, dgram,
sizeof(pad), pad,
sizeof(pad)));
2390 uint16_t msize = ntohs (
msg->
size);
2394 char dgram[
receiver->kx_mtu +
sizeof(
uc) +
sizeof(kx)];
2396 gcry_cipher_hd_t out_cipher;
2448 0 == gcry_cipher_encrypt (out_cipher, &dgram[dpos], msize,
msg, msize));
2450 do_pad (out_cipher, &dgram[dpos],
sizeof(dgram) - dpos);
2454 0 == gcry_cipher_gettag (out_cipher, kx.
gcm_tag,
sizeof(kx.
gcm_tag)));
2455 gcry_cipher_close (out_cipher);
2456 memcpy (dgram, &kx,
sizeof(kx));
2465 "Sending KX with payload size %u to %s family %d failed sock %p\n",
2476 "Sending KX with payload size %u to %s\n",
2516 "Setup secret with k = %s\n",
2519 "Setup secret with H(k) = %s\n",
2545 uint16_t msize = ntohs (
msg->
size);
2552 "msize: %u, mtu: %llu, acks: %u\n",
2553 (
unsigned int) msize,
2554 (
unsigned long long)
receiver->d_mtu,
2580 "Considering SS %s sequence used: %u sequence allowed: %u bytes sent: %lu.\n",
2593 "Skipping ss because rekey bytes reached.\n");
2605 "Injecting rekey for ss with byte sent %lu\n",
2609 payload_len +=
sizeof (rekey);
2615 "Trying to send UDPBox with shared secrect %s sequence_used %u and ss->sequence_allowed %u\n",
2620 char dgram[payload_len];
2622 gcry_cipher_hd_t out_cipher;
2625 box = (
struct UDPBox *) dgram;
2630 dpos =
sizeof(
struct UDPBox);
2634 0 == gcry_cipher_encrypt (out_cipher, &dgram[dpos],
sizeof (rekey),
2635 &rekey,
sizeof (rekey)));
2636 dpos +=
sizeof (rekey);
2639 0 == gcry_cipher_encrypt (out_cipher, &dgram[dpos], msize,
msg, msize));
2641 do_pad (out_cipher, &dgram[dpos],
sizeof(dgram) - dpos);
2645 gcry_cipher_close (out_cipher);
2655 "Sending UDPBox to %s family %d failed sock %p failed\n",
2664 "Sending UDPBox with payload size %u, %u acks left, %lu bytes sent\n",
2674 "No suitable ss found, sending as KX...\n");
2692 "Default MQ destroyed\n");
2715 "KX MQ destroyed\n");
2754 "MQ error in queue to %s: %d\n",
2773 switch (
receiver->address->sa_family)
2798 "Setting up MQs and QHs\n");
2856 struct sockaddr *in;
2872 "Failed to setup UDP socket address\n");
2875 if ((AF_INET6 == in->sa_family) &&
2879 "IPv6 disabled, skipping %s\n",
address);
2893 "receiver %s already exist or is being connected to\n",
2910 "Added %s to receivers\n",
2918 "# receivers active",
3056 "do_shutdown finished\n");
3100 "Storing UDPAck received from backchannel from %s\n",
3134 const struct sockaddr *addr,
3183 switch (bi->
sa->sa_family)
3199 "creating UDPBroadcast from %s\n",
3202 "sending UDPBroadcast to add %s\n",
3224 struct sockaddr_in6 dst;
3226 dst.sin6_family = AF_INET6;
3227 dst.sin6_port = htons (
my_port);
3228 dst.sin6_addr = bi->
mcreq.ipv6mr_multiaddr;
3229 dst.sin6_scope_id = ((
struct sockaddr_in6 *) bi->
ba)->sin6_scope_id;
3232 "sending UDPBroadcast\n");
3236 (
const struct sockaddr *) &dst,
3268 const struct sockaddr *addr,
3269 const struct sockaddr *broadcast_addr,
3270 const struct sockaddr *netmask,
3289 if ((bi->
salen == addrlen) && (0 == memcmp (addr, bi->
sa, addrlen)))
3296 if ((AF_INET6 == addr->sa_family) && (NULL == broadcast_addr))
3304 if ( (NULL != broadcast_addr) &&
3305 (addrlen ==
sizeof (
struct sockaddr_in)) )
3307 struct sockaddr_in *ba;
3311 ba->sin_port = htons (2086);
3312 bi->
ba = (
struct sockaddr *) ba;
3314 bi->
salen = addrlen;
3322 "creating UDPBroadcastSignature for %s\n",
3333 if ((AF_INET6 == addr->sa_family) && (NULL != broadcast_addr))
3336 const struct sockaddr_in6 *s6 =
3337 (
const struct sockaddr_in6 *) broadcast_addr;
3340 1 == inet_pton (AF_INET6,
"FF05::13B", &bi->
mcreq.ipv6mr_multiaddr));
3353 bi->
mcreq.ipv6mr_interface = s6->sin6_scope_id;
3397 const struct sockaddr *addr,
3402 "No connection reversal implemented!");
3417 const char *cfgfile,
3421 struct sockaddr *in;
3423 struct sockaddr_storage in_sto;
3469 "Failed to setup UDP socket address with path `%s'\n",
3482 "Failed to create socket for %s family %d\n",
3490 if (AF_INET6 == in->sa_family)
3501 "Failed to bind socket for %s family %d sock %p\n",
3515 sto_len =
sizeof(in_sto);
3517 (
struct sockaddr *) &in_sto,
3520 memcpy (&in_sto, in, in_len);
3525 in = (
struct sockaddr *) &in_sto;
3529 "Bound to `%s' sock %p\n",
3530 GNUNET_a2s ((
const struct sockaddr *) &in_sto,
3533 switch (in->sa_family)
3536 my_port = ntohs (((
struct sockaddr_in *) in)->sin_port);
3540 my_port = ntohs (((
struct sockaddr_in6 *) in)->sin6_port);
3562 "Transport service is lacking key configuration settings. Exiting.\n"));
3597 "DISABLE_BROADCAST"))
3605 (
const struct sockaddr **) &in,
3630 "Starting udp communicator\n");
3636 "gnunet-communicator-udp",
3637 _ (
"GNUnet UDP communicator"),
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_OPTION_END
struct GNUNET_GETOPT_CommandLineOption options[]
struct GNUNET_MQ_Handle * mq
struct GNUNET_MessageHeader * msg
static int start
Set if we are to start default services (including ARM).
static int ret
Final status code.
static uint16_t port
Port number.
static void inject_rekey(struct Queue *queue)
Inject a struct TCPRekey message into the queue's plaintext buffer.
#define AES_KEY_SIZE
AES key size.
static struct BroadcastInterface * bi_tail
Broadcast interface tasks.
#define DEFAULT_REKEY_TIME_INTERVAL
How often do we rekey based on time (at least)
static int try_decrypt(const struct SharedSecret *ss, const uint8_t *tag, uint32_t serial, const char *in_buf, size_t in_buf_size, char *out_buf)
Try to decrypt buf using shared secret ss and key/iv derived using serial.
#define WORKING_QUEUE_INTERVALL
static void kce_destroy(struct KeyCacheEntry *kce)
Free memory used by key cache entry.
static int handle_ack(void *cls, const struct GNUNET_HashCode *key, void *value)
We received an ACK for pid.
static void create_rekey(struct ReceiverAddress *receiver, struct SharedSecret *ss, struct UDPRekey *rekey)
static void mq_destroy_d(struct GNUNET_MQ_Handle *mq, void *impl_state)
Signature of functions implementing the destruction of a message queue.
static void get_iv_key(const struct GNUNET_HashCode *msec, uint32_t serial, char key[(256/8)], char iv[(96/8)])
Compute key and iv.
static int secret_destroy(struct SharedSecret *ss)
Destroy ss and associated key cache entries.
static void setup_cipher(const struct GNUNET_HashCode *msec, uint32_t serial, gcry_cipher_hd_t *cipher)
Setup cipher based on shared secret msec and serial number serial.
#define GCM_TAG_SIZE
Size of the GCM tag.
static struct GNUNET_PeerIdentity my_identity
Our public key.
static struct SharedSecret * setup_shared_secret_ephemeral(struct GNUNET_CRYPTO_EcdhePublicKey *ephemeral, struct ReceiverAddress *receiver)
Setup new shared secret for encryption using KEM.
static void mq_send_kx(struct GNUNET_MQ_Handle *mq, const struct GNUNET_MessageHeader *msg, void *impl_state)
Signature of functions implementing the sending functionality of a message queue.
#define COMMUNICATOR_ADDRESS_PREFIX
Address prefix used by the communicator.
static void kce_generate(struct SharedSecret *ss, uint32_t seq)
Setup key cache entry for sequence number seq and shared secret ss.
static void add_acks(struct SharedSecret *ss, int acks_to_add)
#define ADDRESS_VALIDITY_PERIOD
How long do we believe our addresses to remain up (before the other peer should revalidate).
static void mq_destroy_kx(struct GNUNET_MQ_Handle *mq, void *impl_state)
Signature of functions implementing the destruction of a message queue.
static int get_receiver_delete_it(void *cls, const struct GNUNET_HashCode *target, void *value)
Iterator over all receivers to clean up.
static void try_connection_reversal(void *cls, const struct sockaddr *addr, socklen_t addrlen)
static struct GNUNET_SCHEDULER_Task * broadcast_task
ID of master broadcast task.
static struct GNUNET_NT_InterfaceScanner * is
Network scanner to determine network types.
static int disable_v6
IPv6 disabled or not.
static struct GNUNET_STATISTICS_Handle * stats
For logging statistics.
static const struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
static void enc_notify_cb(void *cls, const struct GNUNET_PeerIdentity *sender, const struct GNUNET_MessageHeader *msg)
Function called when the transport service has received a backchannel message for this communicator (...
static struct SenderAddress * setup_sender(const struct GNUNET_PeerIdentity *target, const struct sockaddr *address, socklen_t address_len)
Create sender address for target.
unsigned int purge_secrets(struct SharedSecret *ss_list_tail)
Best effort try to purge some secrets.
static struct GNUNET_TIME_Relative rekey_interval
The rekey interval.
static void reschedule_receiver_timeout(struct ReceiverAddress *receiver)
Increment receiver timeout due to activity.
static struct GNUNET_NETWORK_Handle * udp_sock
Our socket.
static void do_pad(gcry_cipher_hd_t out_cipher, char *dgram, size_t pad_size)
Pad dgram by pad_size using out_cipher.
static void mq_send_d(struct GNUNET_MQ_Handle *mq, const struct GNUNET_MessageHeader *msg, void *impl_state)
Signature of functions implementing the sending functionality of a message queue.
static void sock_read(void *cls)
Socket read task.
static void reschedule_sender_timeout(struct SenderAddress *sender)
Increment sender timeout due to activity.
static struct GNUNET_CONTAINER_Heap * senders_heap
Expiration heap for senders (contains struct SenderAddress)
static void do_shutdown(void *cls)
Shutdown the UNIX communicator.
static int get_sender_delete_it(void *cls, const struct GNUNET_HashCode *target, void *value)
Iterator over all senders to clean up.
#define COMMUNICATOR_CONFIG_SECTION
Configuration section used by the communicator.
static void nat_address_cb(void *cls, void **app_ctx, int add_remove, enum GNUNET_NAT_AddressClass ac, const struct sockaddr *addr, socklen_t addrlen)
Signature of the callback passed to GNUNET_NAT_register() for a function to call whenever our set of ...
static struct GNUNET_TRANSPORT_CommunicatorHandle * ch
Our environment.
static void sender_destroy(struct SenderAddress *sender)
Functions with this signature are called whenever we need to close a sender's state due to timeout.
static void setup_receiver_mq(struct ReceiverAddress *receiver)
Setup the MQ for the receiver.
static struct sockaddr * udp_address_to_sockaddr(const char *bindto, socklen_t *sock_len)
Convert UDP bind specification to a struct sockaddr *
static int handle_ack_by_sender(void *cls, const struct GNUNET_HashCode *key, void *value)
static void run(void *cls, char *const *args, const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *c)
Setup communicator and launch network interactions.
#define DEFAULT_REKEY_MAX_BYTES
Default value for how often we do rekey based on number of bytes transmitted? (additionally randomize...
static struct GNUNET_NAT_Handle * nat
Connection to NAT service.
static struct GNUNET_CONTAINER_MultiHashMap * receivers
Receivers (map from peer identity to struct ReceiverAddress)
static void kce_generate_cb(void *cls)
static struct GNUNET_SCHEDULER_Task * read_task
ID of read task.
static void try_handle_plaintext(struct SenderAddress *sender, const void *buf, size_t buf_size)
Test if we have received a valid message in plaintext.
static void receiver_destroy(struct ReceiverAddress *receiver)
Destroys a receiving state due to timeout or shutdown.
static struct GNUNET_CONTAINER_MultiShortmap * key_cache
Cache of pre-generated key IDs.
#define KCN_TARGET
How many KCNs do we keep around after we hit the KCN_THRESHOLD? Should be larger than KCN_THRESHOLD s...
static void mq_cancel(struct GNUNET_MQ_Handle *mq, void *impl_state)
Implementation function that cancels the currently sent message.
static struct GNUNET_TRANSPORT_ApplicationHandle * ah
Our handle to report addresses for validation to TRANSPORT.
static void bi_destroy(struct BroadcastInterface *bi)
An interface went away, stop broadcasting on it.
static int have_v6_socket
GNUNET_YES if udp_sock supports IPv6.
static void pass_plaintext_to_core(struct SenderAddress *sender, const void *plaintext, size_t plaintext_len)
We received plaintext_len bytes of plaintext from a sender.
static struct GNUNET_CONTAINER_MultiHashMap * senders
Senders (map from peer identity to struct SenderAddress)
static int mq_init(void *cls, const struct GNUNET_PeerIdentity *peer, const char *address)
Function called by the transport service to initialize a message queue given address information abou...
static void do_broadcast(void *cls)
Scan interfaces to broadcast our presence on the LAN.
#define INTERFACE_SCAN_FREQUENCY
How often do we scan for changes to our network interfaces?
static struct GNUNET_CONTAINER_Heap * receivers_heap
Expiration heap for receivers (contains struct ReceiverAddress)
static uint16_t my_port
Port number to which we are actually bound.
static void get_kid(const struct GNUNET_HashCode *msec, uint32_t serial, struct GNUNET_ShortHashCode *kid)
Compute kid.
static char * sockaddr_to_udpaddr_string(const struct sockaddr *address, socklen_t address_len)
Converts address to the address string format used by this communicator in HELLOs.
static void check_timeouts(void *cls)
Task run to check #receiver_heap and #sender_heap for timeouts.
static void calculate_cmac(struct SharedSecret *ss)
Calculate cmac from master in ss.
static struct GNUNET_SCHEDULER_Task * timeout_task
ID of timeout task.
#define MAX_SQN_DELTA
What is the maximum delta between KCN sequence numbers that we allow.
int main(int argc, char *const *argv)
The main function for the UNIX communicator.
static struct GNUNET_CRYPTO_EddsaPrivateKey * my_private_key
Our private key.
#define KCN_THRESHOLD
If we fall below this number of available KCNs, we generate additional ACKs until we reach KCN_TARGET...
#define MAX_SECRETS
How many shared master secrets do we keep around at most per sender? Should be large enough so that w...
static struct BroadcastInterface * bi_head
Broadcast interface tasks.
static struct SharedSecret * setup_initial_shared_secret_ephemeral(struct GNUNET_CRYPTO_ElligatorRepresentative *representative, struct ReceiverAddress *receiver)
Setup new shared secret for encryption using KEM for initial handshake.
static void send_msg_with_kx(const struct GNUNET_MessageHeader *msg, struct ReceiverAddress *receiver, struct GNUNET_MQ_Handle *mq)
static struct SharedSecret * setup_shared_secret_dec(const struct GNUNET_CRYPTO_EcdhePublicKey *ephemeral)
Setup shared secret for decryption.
static struct SharedSecret * setup_initial_shared_secret_dec(const struct GNUNET_CRYPTO_ElligatorRepresentative *representative)
Setup shared secret for decryption for initial handshake.
static void mq_error(void *cls, enum GNUNET_MQ_Error error)
Generic error handler, called with the appropriate error code and the same closure specified at the c...
static int iface_proc(void *cls, const char *name, int isDefault, const struct sockaddr *addr, const struct sockaddr *broadcast_addr, const struct sockaddr *netmask, socklen_t addrlen)
Callback function invoked for each interface found.
static void ifc_broadcast(void *cls)
Broadcast our presence on one of our interfaces.
static void decrypt_box(const struct UDPBox *box, size_t box_len, struct KeyCacheEntry *kce)
We received a box with matching kce.
static int verify_confirmation(const struct GNUNET_CRYPTO_EcdhePublicKey *ephemeral, const struct UDPConfirmation *uc)
Check signature from uc against ephemeral.
static void consider_ss_ack(struct SharedSecret *ss)
We established a shared secret with a sender.
static unsigned long long rekey_max_bytes
How often we do rekey based on number of bytes transmitted.
#define AES_IV_SIZE
AES (GCM) IV size.
#define BROADCAST_FREQUENCY
How often do we broadcast our presence on the LAN?
static struct GNUNET_TRANSPORT_AddressIdentifier * ai
Handle to the operation that publishes our address.
static struct GNUNET_SCHEDULER_Task * st
The shutdown task.
static char * address
GNS address for this phone.
struct GNUNET_HashCode key
The key used in the DHT.
static struct in_addr dummy
Target "dummy" address of the packet we pretend to respond to.
static char * name
Name (label) of the records to list.
static char * res
Currently read line or NULL on EOF.
static char * value
Value of the record to add/remove.
static uint32_t type
Type string converted to DNS type value.
static struct GNUNET_NAT_AUTO_Test * nt
Handle to a NAT test operation.
static struct GNUNET_FS_UnindexContext * uc
commonly used definitions; globals in this file are exempt from the rule that the module name ("commo...
Constants for network protocols.
API to create, modify and access statistics.
Bandwidth allocation API for applications to interact with.
API of the transport service towards the communicator processes.
void GNUNET_TRANSPORT_communicator_address_remove(struct GNUNET_TRANSPORT_AddressIdentifier *ai)
Notify transport service about an address that this communicator no longer provides for this peer.
int GNUNET_TRANSPORT_communicator_receive(struct GNUNET_TRANSPORT_CommunicatorHandle *handle, const struct GNUNET_PeerIdentity *sender, const struct GNUNET_MessageHeader *msg, struct GNUNET_TIME_Relative expected_addr_validity, GNUNET_TRANSPORT_MessageCompletedCallback cb, void *cb_cls)
Notify transport service that the communicator has received a message.
void GNUNET_TRANSPORT_communicator_mq_del(struct GNUNET_TRANSPORT_QueueHandle *qh)
Notify transport service that an MQ became unavailable due to a disconnect or timeout.
void GNUNET_TRANSPORT_application_done(struct GNUNET_TRANSPORT_ApplicationHandle *ch)
Shutdown TRANSPORT application client.
#define GNUNET_TRANSPORT_QUEUE_LENGTH_UNLIMITED
Queue length.
struct GNUNET_TRANSPORT_QueueHandle * GNUNET_TRANSPORT_communicator_mq_add(struct GNUNET_TRANSPORT_CommunicatorHandle *ch, const struct GNUNET_PeerIdentity *peer, const char *address, uint32_t mtu, uint64_t q_len, uint32_t priority, enum GNUNET_NetworkType nt, enum GNUNET_TRANSPORT_ConnectionStatus cs, struct GNUNET_MQ_Handle *mq)
Notify transport service that a MQ became available due to an "inbound" connection or because the com...
void GNUNET_TRANSPORT_application_validate(struct GNUNET_TRANSPORT_ApplicationHandle *ch, const struct GNUNET_PeerIdentity *peer, enum GNUNET_NetworkType nt, const char *addr)
An application (or a communicator) has received a HELLO (or other address data of another peer) and w...
void GNUNET_TRANSPORT_communicator_mq_update(struct GNUNET_TRANSPORT_CommunicatorHandle *ch, const struct GNUNET_TRANSPORT_QueueHandle *u_qh, uint64_t q_len, uint32_t priority)
Notify transport service that an MQ was updated.
void GNUNET_TRANSPORT_communicator_notify(struct GNUNET_TRANSPORT_CommunicatorHandle *ch, const struct GNUNET_PeerIdentity *pid, const char *comm, const struct GNUNET_MessageHeader *header)
The communicator asks the transport service to route a message via a different path to another commun...
void GNUNET_TRANSPORT_communicator_disconnect(struct GNUNET_TRANSPORT_CommunicatorHandle *ch)
Disconnect from the transport service.
struct GNUNET_TRANSPORT_CommunicatorHandle * GNUNET_TRANSPORT_communicator_connect(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *config_section_name, const char *addr_prefix, enum GNUNET_TRANSPORT_CommunicatorCharacteristics cc, GNUNET_TRANSPORT_CommunicatorMqInit mq_init, void *mq_init_cls, GNUNET_TRANSPORT_CommunicatorNotify notify_cb, void *notify_cb_cls)
Connect to the transport service.
struct GNUNET_TRANSPORT_ApplicationHandle * GNUNET_TRANSPORT_application_init(const struct GNUNET_CONFIGURATION_Handle *cfg)
Initialize the TRANSPORT application client handle.
struct GNUNET_TRANSPORT_AddressIdentifier * GNUNET_TRANSPORT_communicator_address_add(struct GNUNET_TRANSPORT_CommunicatorHandle *ch, const char *address, enum GNUNET_NetworkType nt, struct GNUNET_TIME_Relative expiration)
Notify transport service about an address that this communicator provides for this peer.
@ GNUNET_TRANSPORT_CC_UNRELIABLE
Transmission is unreliable (e.g.
@ GNUNET_TRANSPORT_CS_OUTBOUND
this is an outbound connection (transport initiated)
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_size(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long *size)
Get a configuration value that should be a size in bytes.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_yesno(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Get a configuration value that should be in a set of "YES" or "NO".
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_time(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, struct GNUNET_TIME_Relative *time)
Get a configuration value that should be a relative time.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_string(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be a string.
#define GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT
After how long do we consider a connection to a peer dead if we don't receive messages from the peer?
uint64_t GNUNET_CRYPTO_random_u64(enum GNUNET_CRYPTO_Quality mode, uint64_t max)
Generate a random unsigned 64-bit value.
enum GNUNET_GenericReturnValue GNUNET_CRYPTO_eddsa_kem_decaps(const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, const struct GNUNET_CRYPTO_EcdhePublicKey *c, struct GNUNET_HashCode *key_material)
Decapsulate a key for a private EdDSA key.
enum GNUNET_GenericReturnValue GNUNET_CRYPTO_eddsa_elligator_kem_encaps(const struct GNUNET_CRYPTO_EddsaPublicKey *pub, struct GNUNET_CRYPTO_ElligatorRepresentative *r, struct GNUNET_HashCode *key_material)
Carries out ecdh encapsulation with given public key and the private key from a freshly created ephem...
void GNUNET_CRYPTO_random_block(enum GNUNET_CRYPTO_Quality mode, void *buffer, size_t length)
Fill block with a random values.
void GNUNET_CRYPTO_eddsa_key_get_public(const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, struct GNUNET_CRYPTO_EddsaPublicKey *pub)
Extract the public key for the given private key.
enum GNUNET_GenericReturnValue GNUNET_CRYPTO_eddsa_kem_encaps(const struct GNUNET_CRYPTO_EddsaPublicKey *pub, struct GNUNET_CRYPTO_EcdhePublicKey *c, struct GNUNET_HashCode *key_material)
Encapsulate key material for a EdDSA public key.
void GNUNET_CRYPTO_ecdhe_elligator_decoding(struct GNUNET_CRYPTO_EcdhePublicKey *point, bool *high_y, const struct GNUNET_CRYPTO_ElligatorRepresentative *representative)
Clears the most significant bit and second most significant bit of the serialized representaive befor...
#define GNUNET_CRYPTO_eddsa_sign(priv, ps, sig)
EdDSA sign a given block.
#define GNUNET_CRYPTO_eddsa_verify(purp, ps, sig, pub)
Verify EdDSA signature.
enum GNUNET_GenericReturnValue GNUNET_CRYPTO_eddsa_elligator_kem_decaps(const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, const struct GNUNET_CRYPTO_ElligatorRepresentative *r, struct GNUNET_HashCode *key_material)
Carries out ecdh decapsulation with own private key and the representative of the received public key...
struct GNUNET_CRYPTO_EddsaPrivateKey * GNUNET_CRYPTO_eddsa_key_create_from_configuration(const struct GNUNET_CONFIGURATION_Handle *cfg)
Create a new private key by reading our peer's key from the file specified in the configuration.
@ GNUNET_CRYPTO_QUALITY_WEAK
No good quality of the operation is needed (i.e., random numbers can be pseudo-random).
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
enum GNUNET_GenericReturnValue GNUNET_CRYPTO_hkdf(void *result, size_t out_len, int xtr_algo, int prf_algo, const void *xts, size_t xts_len, const void *skm, size_t skm_len,...)
Derive key.
int GNUNET_CONTAINER_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_MultiHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map.
void * GNUNET_CONTAINER_multihashmap_get(const struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key)
Given a key find a value in the map matching the key.
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap_remove(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, const void *value)
Remove the given key-value pair from the map.
struct GNUNET_CONTAINER_MultiShortmap * GNUNET_CONTAINER_multishortmap_create(unsigned int len, int do_not_copy_keys)
Create a multi peer map (hash map for public keys of peers).
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multishortmap_put(struct GNUNET_CONTAINER_MultiShortmap *map, const struct GNUNET_ShortHashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap_put(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
void * GNUNET_CONTAINER_multishortmap_get(const struct GNUNET_CONTAINER_MultiShortmap *map, const struct GNUNET_ShortHashCode *key)
Given a key find a value in the map matching the key.
unsigned int GNUNET_CONTAINER_multihashmap_size(const struct GNUNET_CONTAINER_MultiHashMap *map)
Get the number of key-value pairs in the map.
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
void GNUNET_CONTAINER_multishortmap_destroy(struct GNUNET_CONTAINER_MultiShortmap *map)
Destroy a hash map.
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap_get_multiple(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, GNUNET_CONTAINER_MultiHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map that match a particular key.
unsigned int GNUNET_CONTAINER_multishortmap_size(const struct GNUNET_CONTAINER_MultiShortmap *map)
Get the number of key-value pairs in the map.
int GNUNET_CONTAINER_multishortmap_remove(struct GNUNET_CONTAINER_MultiShortmap *map, const struct GNUNET_ShortHashCode *key, const void *value)
Remove the given key-value pair from the map.
@ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE
Allow multiple values with the same key.
void * GNUNET_CONTAINER_heap_remove_node(struct GNUNET_CONTAINER_HeapNode *node)
Removes a node from the heap.
void * GNUNET_CONTAINER_heap_peek(const struct GNUNET_CONTAINER_Heap *heap)
Get element stored at the root of heap.
void GNUNET_CONTAINER_heap_update_cost(struct GNUNET_CONTAINER_HeapNode *node, GNUNET_CONTAINER_HeapCostType new_cost)
Updates the cost of any node in the tree.
struct GNUNET_CONTAINER_HeapNode * GNUNET_CONTAINER_heap_insert(struct GNUNET_CONTAINER_Heap *heap, void *element, GNUNET_CONTAINER_HeapCostType cost)
Inserts a new element into the heap.
struct GNUNET_CONTAINER_Heap * GNUNET_CONTAINER_heap_create(enum GNUNET_CONTAINER_HeapOrder order)
Create a new heap.
void GNUNET_CONTAINER_heap_destroy(struct GNUNET_CONTAINER_Heap *heap)
Destroys the heap.
@ GNUNET_CONTAINER_HEAP_ORDER_MIN
Heap with the minimum cost at the root.
#define GNUNET_NETWORK_STRUCT_BEGIN
Define as empty, GNUNET_PACKED should suffice, but this won't work on W32.
#define GNUNET_log(kind,...)
void GNUNET_CRYPTO_hash_context_read(struct GNUNET_HashContext *hc, const void *buf, size_t size)
Add data to be hashed.
#define GNUNET_NETWORK_STRUCT_END
Define as empty, GNUNET_PACKED should suffice, but this won't work on W32;.
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
void GNUNET_CRYPTO_hash_context_finish(struct GNUNET_HashContext *hc, struct GNUNET_HashCode *r_hash)
Finish the hash computation.
struct GNUNET_HashContext * GNUNET_CRYPTO_hash_context_start(void)
Start incremental hashing operation.
#define GNUNET_PACKED
gcc-ism to get packed structs.
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
const char * GNUNET_sh2s(const struct GNUNET_ShortHashCode *shc)
Convert a short hash value to a string (for printing debug messages).
const char * GNUNET_i2s_full(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
const char * GNUNET_a2s(const struct sockaddr *addr, socklen_t addrlen)
Convert a "struct sockaddr*" (IPv4 or IPv6 address) to a string (for printing debug messages).
void GNUNET_log_config_missing(enum GNUNET_ErrorType kind, const char *section, const char *option)
Log error message about missing configuration option.
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level 'level' that indicates a failure of the command 'cmd' with the mess...
void GNUNET_log_from_nocheck(enum GNUNET_ErrorType kind, const char *comp, const char *message,...) __attribute__((format(printf
Log function that specifies an alternative component.
#define GNUNET_log_strerror_file(level, cmd, filename)
Log an error message at log-level 'level' that indicates a failure of the command 'cmd' with the mess...
@ GNUNET_ERROR_TYPE_WARNING
@ GNUNET_ERROR_TYPE_ERROR
@ GNUNET_ERROR_TYPE_DEBUG
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
#define GNUNET_malloc(size)
Wrapper around malloc.
#define GNUNET_free(ptr)
Wrapper around free.
#define GNUNET_free_nz(ptr)
Wrapper around free.
#define GNUNET_memdup(buf, size)
Allocate and initialize a block of memory.
GNUNET_MQ_Error
Error codes for the queue.
struct GNUNET_MQ_Handle * GNUNET_MQ_queue_for_callbacks(GNUNET_MQ_SendImpl send, GNUNET_MQ_DestroyImpl destroy, GNUNET_MQ_CancelImpl cancel, void *impl_state, const struct GNUNET_MQ_MessageHandler *handlers, GNUNET_MQ_ErrorHandler error_handler, void *cls)
Create a message queue for the specified handlers.
void GNUNET_MQ_impl_send_continue(struct GNUNET_MQ_Handle *mq)
Call the send implementation for the next queued message, if any.
struct GNUNET_NAT_Handle * GNUNET_NAT_register(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *config_section, uint8_t proto, unsigned int num_addrs, const struct sockaddr **addrs, const socklen_t *addrlens, GNUNET_NAT_AddressCallback address_callback, GNUNET_NAT_ReversalCallback reversal_callback, void *callback_cls)
Attempt to enable port redirection and detect public IP address contacting UPnP or NAT-PMP routers on...
void GNUNET_NAT_unregister(struct GNUNET_NAT_Handle *nh)
Stop port redirection and public IP address detection for the given handle.
GNUNET_NAT_AddressClass
Some addresses contain sensitive information or are not suitable for global distribution.
enum GNUNET_GenericReturnValue GNUNET_NETWORK_socket_close(struct GNUNET_NETWORK_Handle *desc)
Close a socket.
int GNUNET_NETWORK_get_fd(const struct GNUNET_NETWORK_Handle *desc)
Return file descriptor for this network handle.
ssize_t GNUNET_NETWORK_socket_recvfrom(const struct GNUNET_NETWORK_Handle *desc, void *buffer, size_t length, struct sockaddr *src_addr, socklen_t *addrlen)
Read data from a socket (always non-blocking).
struct GNUNET_NETWORK_Handle * GNUNET_NETWORK_socket_create(int domain, int type, int protocol)
Create a new socket.
enum GNUNET_GenericReturnValue GNUNET_NETWORK_test_pf(int pf)
Test if the given protocol family is supported by this system.
enum GNUNET_GenericReturnValue GNUNET_NETWORK_socket_bind(struct GNUNET_NETWORK_Handle *desc, const struct sockaddr *address, socklen_t address_len)
Bind a socket to a particular address.
int GNUNET_NETWORK_socket_setsockopt(struct GNUNET_NETWORK_Handle *fd, int level, int option_name, const void *option_value, socklen_t option_len)
Set socket option.
ssize_t GNUNET_NETWORK_socket_sendto(const struct GNUNET_NETWORK_Handle *desc, const void *message, size_t length, const struct sockaddr *dest_addr, socklen_t dest_len)
Send data to a particular destination (always non-blocking).
GNUNET_NetworkType
Types of networks (with separate quotas) we support.
void GNUNET_NT_scanner_done(struct GNUNET_NT_InterfaceScanner *is)
Terminate interface scanner.
struct GNUNET_NT_InterfaceScanner * GNUNET_NT_scanner_init(void)
Initialize the address characterization client handle.
enum GNUNET_NetworkType GNUNET_NT_scanner_get_type(struct GNUNET_NT_InterfaceScanner *is, const struct sockaddr *addr, socklen_t addrlen)
Returns where the address is located: loopback, LAN or WAN.
@ GNUNET_NT_LOOPBACK
Loopback (same host).
void GNUNET_OS_network_interfaces_list(GNUNET_OS_NetworkInterfaceProcessor proc, void *proc_cls)
Enumerate all network interfaces.
enum GNUNET_GenericReturnValue GNUNET_PROGRAM_run(int argc, char *const *argv, const char *binaryName, const char *binaryHelp, const struct GNUNET_GETOPT_CommandLineOption *options, GNUNET_PROGRAM_Main task, void *task_cls)
Run a standard GNUnet command startup sequence (initialize loggers and configuration,...
#define GNUNET_MESSAGE_TYPE_COMMUNICATOR_UDP_REKEY
UDP Rekey.
#define GNUNET_MESSAGE_TYPE_COMMUNICATOR_UDP_PAD
UDP communicator padding.
#define GNUNET_MESSAGE_TYPE_COMMUNICATOR_UDP_ACK
UDP KX acknowledgement.
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_net(struct GNUNET_TIME_Relative delay, struct GNUNET_NETWORK_Handle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_shutdown(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run on shutdown, that is when a CTRL-C signal is received,...
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
struct GNUNET_STATISTICS_Handle * GNUNET_STATISTICS_create(const char *subsystem, const struct GNUNET_CONFIGURATION_Handle *cfg)
Get handle for the statistics service.
void GNUNET_STATISTICS_set(struct GNUNET_STATISTICS_Handle *handle, const char *name, uint64_t value, int make_persistent)
Set statistic value for the peer.
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
void GNUNET_STATISTICS_destroy(struct GNUNET_STATISTICS_Handle *h, int sync_first)
Destroy a handle (free all state associated with it).
enum GNUNET_GenericReturnValue GNUNET_STRINGS_get_utf8_args(int argc, char *const *argv, int *u8argc, char *const **u8argv)
Returns utf-8 encoded arguments.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_min(struct GNUNET_TIME_Relative t1, struct GNUNET_TIME_Relative t2)
Return the minimum of two relative time values.
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_remaining(struct GNUNET_TIME_Absolute future)
Given a timestamp in the future, how much time remains until then?
struct GNUNET_TIME_Absolute GNUNET_TIME_relative_to_absolute(struct GNUNET_TIME_Relative rel)
Convert relative time to an absolute time in the future.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get_monotonic(const struct GNUNET_CONFIGURATION_Handle *cfg)
Obtain the current time and make sure it is monotonically increasing.
struct GNUNET_TIME_AbsoluteNBO GNUNET_TIME_absolute_hton(struct GNUNET_TIME_Absolute a)
Convert absolute time to network byte order.
void receiver(void *cls, const void *buf, size_t available, const struct sockaddr *addr, socklen_t addrlen, int errCode)
Callback to read from the SOCKS5 proxy.
#define GNUNET_SIGNATURE_PURPOSE_COMMUNICATOR_UDP_BROADCAST
Signature used by UDP broadcasts.
#define GNUNET_SIGNATURE_PURPOSE_COMMUNICATOR_UDP_HANDSHAKE
Signature used by UDP communicator handshake.
const struct UDPAck * ack
const struct GNUNET_PeerIdentity * sender
Interface we broadcast our presence on.
socklen_t salen
Number of bytes in sa.
struct ipv6_mreq mcreq
If this is an IPv6 interface, this is the request we use to join/leave the group.
struct BroadcastInterface * next
Kept in a DLL.
int found
Was this interface found in the last iface_proc() scan?
struct UDPBroadcast bcm
Message we broadcast on this interface.
struct sockaddr * ba
Broadcast address to use on the interface.
struct GNUNET_SCHEDULER_Task * broadcast_task
Task for this broadcast interface.
struct BroadcastInterface * prev
Kept in a DLL.
struct sockaddr * sa
Sender's address of the interface.
Handle to a node in a heap.
Internal representation of the hash map.
Internal representation of the hash map.
header of what an ECC signature signs this must be followed by "size - 8" bytes of the actual signed ...
uint32_t size
How many bytes does this signature sign? (including this purpose header); in network byte order (!...
uint32_t purpose
What does this signature vouch for? This must contain a GNUNET_SIGNATURE_PURPOSE_XXX constant (from g...
Public ECC key (always for Curve25519) encoded in a format suitable for network transmission and encr...
Private ECC key encoded for transmission.
an ECC signature using EdDSA.
Elligator representative (always for Curve25519)
Definition of a command line option.
Handle to a message queue.
Handle for active NAT registrations.
Handle to the interface scanner.
The identity of the host (wraps the signing key of the peer).
struct GNUNET_CRYPTO_EddsaPublicKey public_key
Entry in list of pending tasks.
Time for absolute time used by GNUnet, in microseconds and in network byte order.
Time for absolute times used by GNUnet, in microseconds.
uint64_t abs_value_us
The actual value.
Time for relative time used by GNUnet, in microseconds.
uint64_t rel_value_us
The actual value.
Internal representation of an address a communicator is currently providing for the transport service...
Handle to the TRANSPORT subsystem for application management.
Opaque handle to the transport service for communicators.
Handle returned to identify the internal data structure the transport API has created to manage a mes...
"Plaintext" header at beginning of KX message.
struct GNUNET_CRYPTO_ElligatorRepresentative representative
Representative of ephemeral key for KX.
uint8_t gcm_tag[(128/8)]
HMAC for the following encrypted message, using GCM.
Pre-generated "kid" code (key and IV identification code) to quickly derive master key for a struct U...
struct GNUNET_ShortHashCode kid
Key and IV identification code.
uint32_t sequence_number
Sequence number used to derive this entry from master key.
struct KeyCacheEntry * next
Kept in a DLL.
struct KeyCacheEntry * prev
Kept in a DLL.
struct SharedSecret * ss
Corresponding shared secret.
Information we track per receiving address we have recently been in contact with (encryption to recei...
struct GNUNET_CONTAINER_HeapNode * hn
Entry in sender expiration heap.
struct GNUNET_TIME_Absolute rekey_timeout
Timeout for this receiver address.
struct SharedSecret * ss_tail
Shared secrets we received with target, last used is tail.
char * foreign_addr
Address of the receiver in the human-readable format with the COMMUNICATOR_ADDRESS_PREFIX.
unsigned int acks_available
Number of BOX keys from ACKs we have currently available for this receiver.
struct SharedSecret * ss_head
Shared secrets we received from target, first used is head.
struct GNUNET_TRANSPORT_QueueHandle * kx_qh
handle for KX queue with the ch.
unsigned int num_secrets
Length of the DLL at ss_head.
struct GNUNET_TIME_Absolute timeout
Timeout for this receiver address.
size_t kx_mtu
MTU we allowed transport for this receiver's KX queue.
struct sockaddr * address
Address of the other peer.
struct GNUNET_PeerIdentity target
To whom are we talking to.
socklen_t address_len
Length of the address.
struct GNUNET_MQ_Handle * kx_mq
KX message queue we are providing for the ch.
int receiver_destroy_called
receiver_destroy already called on receiver.
size_t d_mtu
MTU we allowed transport for this receiver's default queue.
enum GNUNET_NetworkType nt
Which network type does this queue use?
struct GNUNET_MQ_Handle * d_mq
Default message queue we are providing for the ch.
struct GNUNET_TRANSPORT_QueueHandle * d_qh
handle for default queue with the ch.
struct GNUNET_HashCode key
The address key for this entry.
Closure for #find_sender_by_address()
const struct sockaddr * address
Address we are looking for.
struct SenderAddress * sender
Return value to set if we found a match.
socklen_t address_len
Number of bytes in address.
Information we track per sender address we have recently been in contact with (we decrypt messages fr...
struct GNUNET_PeerIdentity target
To whom are we talking to.
struct GNUNET_CONTAINER_HeapNode * hn
Entry in sender expiration heap.
struct sockaddr * address
Address of the other peer.
socklen_t address_len
Length of the address.
enum GNUNET_NetworkType nt
Which network type does this queue use?
unsigned int acks_available
Number of BOX keys from ACKs we have currently available for this sender.
unsigned int num_secrets
Length of the DLL at ss_head.
int kce_send_ack_on_finish
When KCE finishes, send ACK if GNUNET_YES.
struct GNUNET_TIME_Absolute timeout
Timeout for this sender.
int kce_task_finished
Is the kce_task finished?
struct GNUNET_SCHEDULER_Task * kce_task
ID of kce working queue task.
struct GNUNET_HashCode key
The address key for this entry.
struct SharedSecret * ss_head
Shared secrets we used with target, first used is head.
int sender_destroy_called
sender_destroy already called on sender.
struct SharedSecret * ss_tail
Shared secrets we used with target, last used is tail.
Shared secret we generated for a particular sender or receiver.
struct KeyCacheEntry * kce_tail
Kept in a DLL, sorted by sequence number.
uint32_t sequence_allowed
Up to which sequence number did the other peer allow us to use this key, or up to which number did we...
struct SharedSecret * next
Kept in a DLL.
unsigned int active_kce_count
Number of active KCN entries.
uint32_t sequence_used
Up to which sequence number did we use this master already? (for encrypting only)
size_t bytes_sent
Bytes sent with this shared secret.
struct SharedSecret * prev
Kept in a DLL.
struct SenderAddress * sender
Sender we use this shared secret with, or NULL.
struct KeyCacheEntry * kce_head
Kept in a DLL, sorted by sequence number.
struct GNUNET_HashCode cmac
CMAC is used to identify master in ACKs.
struct ReceiverAddress * receiver
Receiver we use this shared secret with, or NULL.
struct GNUNET_HashCode master
Master shared secret.
int override_available_acks
Also precompute keys despite sufficient acks (for rekey)
int rekey_initiated
rekey initiated for this secret?
uint32_t sequence_ack
Sequence acknowledgement limit.
struct GNUNET_HashCode cmac
CMAC of the base key being acknowledged.
struct GNUNET_MessageHeader header
Type is GNUNET_MESSAGE_TYPE_COMMUNICATOR_UDP_ACK.
uint8_t gcm_tag[(128/8)]
128-bit authentication tag for the following encrypted message, from GCM.
struct GNUNET_ShortHashCode kid
Key and IV identification code.
Broadcast by peer in LAN announcing its presence.
struct GNUNET_CRYPTO_EddsaSignature sender_sig
Sender's signature of type GNUNET_SIGNATURE_PURPOSE_COMMUNICATOR_UDP_BROADCAST.
struct GNUNET_PeerIdentity sender
Sender's peer identity.
Encrypted continuation of UDP initial handshake, followed by message header with payload.
struct GNUNET_PeerIdentity sender
Sender's identity.
struct GNUNET_CRYPTO_EddsaSignature sender_sig
Sender's signature of type GNUNET_SIGNATURE_PURPOSE_COMMUNICATOR_UDP_HANDSHAKE.
struct GNUNET_TIME_AbsoluteNBO monotonic_time
Monotonic time of sender, to possibly help detect replay attacks (if receiver persists times by sende...
Plaintext of a rekey payload in a UDPBox.
struct GNUNET_CRYPTO_EcdhePublicKey ephemeral
Ephemeral key to rekey with.
struct GNUNET_MessageHeader header
Type is GNUNET_MESSAGE_TYPE_COMMUNICATOR_UDP_REKEY.
Signature we use to verify that the broadcast was really made by the peer that claims to have made it...
struct GNUNET_CRYPTO_EccSignaturePurpose purpose
Purpose must be GNUNET_SIGNATURE_PURPOSE_COMMUNICATOR_UDP_BROADCAST.
struct GNUNET_HashCode h_address
Hash of the sender's UDP address.
struct GNUNET_PeerIdentity sender
Identity of the inititor of the UDP broadcast.
Signature we use to verify that the ephemeral key was really chosen by the specified sender.
struct GNUNET_PeerIdentity receiver
Presumed identity of the target of the UDP connection (UDP server)
struct GNUNET_TIME_AbsoluteNBO monotonic_time
Monotonic time of sender, to possibly help detect replay attacks (if receiver persists times by sende...
struct GNUNET_CRYPTO_EcdhePublicKey ephemeral
Ephemeral key used by the sender.
struct GNUNET_CRYPTO_EccSignaturePurpose purpose
Purpose must be GNUNET_SIGNATURE_PURPOSE_COMMUNICATOR_UDP_HANDSHAKE.
struct GNUNET_PeerIdentity sender
Identity of the inititor of the UDP connection (UDP client).