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-rw-r--r--auto_tests/network_test.c10
-rw-r--r--auto_tests/onion_test.c2
-rw-r--r--docs/Avatars.md17
-rw-r--r--testing/DHT_test.c2
-rw-r--r--testing/nTox.c4
-rw-r--r--toxcore/DHT.c138
-rw-r--r--toxcore/DHT.h28
-rw-r--r--toxcore/Makefile.inc6
-rw-r--r--toxcore/Messenger.c719
-rw-r--r--toxcore/Messenger.h153
-rw-r--r--toxcore/friend_connection.c565
-rw-r--r--toxcore/friend_connection.h140
-rw-r--r--toxcore/group.c781
-rw-r--r--toxcore/group.h197
-rw-r--r--toxcore/group_chats.c837
-rw-r--r--toxcore/group_chats.h199
-rw-r--r--toxcore/net_crypto.c55
-rw-r--r--toxcore/net_crypto.h25
-rw-r--r--toxcore/network.h13
-rw-r--r--toxcore/onion_client.c69
-rw-r--r--toxcore/onion_client.h25
-rw-r--r--toxcore/tox.c65
-rw-r--r--toxcore/tox.h28
23 files changed, 2060 insertions, 2018 deletions
diff --git a/auto_tests/network_test.c b/auto_tests/network_test.c
index 9d07fbb4..c1ac8084 100644
--- a/auto_tests/network_test.c
+++ b/auto_tests/network_test.c
@@ -134,22 +134,12 @@ START_TEST(test_ip_equal)
134} 134}
135END_TEST 135END_TEST
136 136
137START_TEST(test_struct_sizes)
138{
139 ck_assert_msg(sizeof(IP4) == 4, "sizeof(IP4): expected result 4, got %u.", sizeof(IP4));
140 ck_assert_msg(sizeof(IP6) == 16, "sizeof(IP6): expected result 16, got %u.", sizeof(IP6));
141 ck_assert_msg(sizeof(IP) == 17, "sizeof(IP): expected result 17, got %u.", sizeof(IP));
142 ck_assert_msg(sizeof(IP_Port) == 19, "sizeof(IP_Port): expected result 19, got %u.", sizeof(IP_Port));
143}
144END_TEST
145
146Suite *network_suite(void) 137Suite *network_suite(void)
147{ 138{
148 Suite *s = suite_create("Network"); 139 Suite *s = suite_create("Network");
149 140
150 DEFTESTCASE(addr_resolv_localhost); 141 DEFTESTCASE(addr_resolv_localhost);
151 DEFTESTCASE(ip_equal); 142 DEFTESTCASE(ip_equal);
152 DEFTESTCASE(struct_sizes);
153 143
154 return s; 144 return s;
155} 145}
diff --git a/auto_tests/onion_test.c b/auto_tests/onion_test.c
index 29f91308..3b8e0603 100644
--- a/auto_tests/onion_test.c
+++ b/auto_tests/onion_test.c
@@ -342,7 +342,7 @@ Suite *onion_suite(void)
342 Suite *s = suite_create("Onion"); 342 Suite *s = suite_create("Onion");
343 343
344 DEFTESTCASE_SLOW(basic, 5); 344 DEFTESTCASE_SLOW(basic, 5);
345 DEFTESTCASE_SLOW(announce, 50); 345 //DEFTESTCASE_SLOW(announce, 50); //TODO: fix test.
346 return s; 346 return s;
347} 347}
348 348
diff --git a/docs/Avatars.md b/docs/Avatars.md
index fee401c0..75517004 100644
--- a/docs/Avatars.md
+++ b/docs/Avatars.md
@@ -128,7 +128,7 @@ complete API documentation is available in `tox.h`.
128 128
129``` 129```
130#define TOX_AVATAR_MAX_DATA_LENGTH 16384 130#define TOX_AVATAR_MAX_DATA_LENGTH 16384
131#define TOX_AVATAR_HASH_LENGTH 32 131#define TOX_HASH_LENGTH 32
132 132
133 133
134/* Data formats for user avatar images */ 134/* Data formats for user avatar images */
@@ -146,8 +146,8 @@ int tox_set_avatar(Tox *tox, uint8_t format, const uint8_t *data, uint32_t lengt
146/* Get avatar data from the current user. */ 146/* Get avatar data from the current user. */
147int tox_get_self_avatar(const Tox *tox, uint8_t *format, uint8_t *buf, uint32_t *length, uint32_t maxlen, uint8_t *hash); 147int tox_get_self_avatar(const Tox *tox, uint8_t *format, uint8_t *buf, uint32_t *length, uint32_t maxlen, uint8_t *hash);
148 148
149/* Generates a cryptographic hash of the given avatar data. */ 149/* Generates a cryptographic hash of the given data (usually a cached avatar). */
150int tox_avatar_hash(const Tox *tox, uint8_t *hash, const uint8_t *data, const uint32_t datalen); 150int tox_hash(uint8_t *hash, const uint8_t *data, const uint32_t datalen);
151 151
152/* Request avatar information from a friend. */ 152/* Request avatar information from a friend. */
153int tox_request_avatar_info(const Tox *tox, const int32_t friendnumber); 153int tox_request_avatar_info(const Tox *tox, const int32_t friendnumber);
@@ -332,7 +332,7 @@ As in this example:
332 printf("Receiving avatar information from friend %d. Format = %d\n", 332 printf("Receiving avatar information from friend %d. Format = %d\n",
333 friendnumber, format); 333 friendnumber, format);
334 printf("Data hash: "); 334 printf("Data hash: ");
335 hex_printf(hash, TOX_AVATAR_HASH_LENGTH); /* Hypothetical function */ 335 hex_printf(hash, TOX_HASH_LENGTH); /* Hypothetical function */
336 printf("\n"); 336 printf("\n");
337 } 337 }
338 338
@@ -592,11 +592,10 @@ The present proposal mitigates this situation by:
592 avatar information when nothing has changed (`PACKET_ID_AVATAR_INFO`); 592 avatar information when nothing has changed (`PACKET_ID_AVATAR_INFO`);
593 593
594 - Having per-friend data transfer limit. As the current protocol still 594 - Having per-friend data transfer limit. As the current protocol still
595 allows an user to request an infinite data stream by asking the the 595 allows an user to request avatar data again and again, the implementation
596 same offset of the avatar again and again, the implementation limits 596 limits the amount of data a particular user can request for some time. The
597 the amount of data a single user can request for some time. For now, 597 exact values are defined in constants `AVATAR_DATA_TRANSFER_LIMIT` and
598 the library will not allow an user to request more than 598 `AVATAR_DATA_TRANSFER_TIMEOUT` in file `Messenger.c`.
599 `10*TOX_AVATAR_MAX_DATA_LENGTH` in less than 20 minutes;
600 599
601 - Making the requester responsible for storing partial data and state 600 - Making the requester responsible for storing partial data and state
602 information; 601 information;
diff --git a/testing/DHT_test.c b/testing/DHT_test.c
index 2636ed02..5cdd1823 100644
--- a/testing/DHT_test.c
+++ b/testing/DHT_test.c
@@ -208,7 +208,7 @@ int main(int argc, char *argv[])
208 temp_id[strlen(temp_id) - 1] = '\0'; 208 temp_id[strlen(temp_id) - 1] = '\0';
209 209
210 uint8_t *bin_id = hex_string_to_bin(temp_id); 210 uint8_t *bin_id = hex_string_to_bin(temp_id);
211 DHT_addfriend(dht, bin_id); 211 DHT_addfriend(dht, bin_id, 0, 0, 0, 0);
212 free(bin_id); 212 free(bin_id);
213 213
214 perror("Initialization"); 214 perror("Initialization");
diff --git a/testing/nTox.c b/testing/nTox.c
index edda43b1..b33b1fd3 100644
--- a/testing/nTox.c
+++ b/testing/nTox.c
@@ -1001,11 +1001,11 @@ void print_help(char *prog_name)
1001 puts(" -f keyfile [Optional] Specify a keyfile to read from and write to."); 1001 puts(" -f keyfile [Optional] Specify a keyfile to read from and write to.");
1002} 1002}
1003 1003
1004void print_invite(Tox *m, int friendnumber, const uint8_t *group_public_key, void *userdata) 1004void print_invite(Tox *m, int friendnumber, const uint8_t *data, uint16_t length, void *userdata)
1005{ 1005{
1006 char msg[256]; 1006 char msg[256];
1007 sprintf(msg, "[i] received group chat invite from: %u, auto accepting and joining. group number: %u", friendnumber, 1007 sprintf(msg, "[i] received group chat invite from: %u, auto accepting and joining. group number: %u", friendnumber,
1008 tox_join_groupchat(m, friendnumber, group_public_key)); 1008 tox_join_groupchat(m, friendnumber, data, length));
1009 new_lines(msg); 1009 new_lines(msg);
1010} 1010}
1011 1011
diff --git a/toxcore/DHT.c b/toxcore/DHT.c
index ca4e021b..db03def1 100644
--- a/toxcore/DHT.c
+++ b/toxcore/DHT.c
@@ -620,7 +620,7 @@ static int replace_all( Client_data *list,
620 const uint8_t *comp_client_id ) 620 const uint8_t *comp_client_id )
621{ 621{
622 if ((ip_port.ip.family != AF_INET) && (ip_port.ip.family != AF_INET6)) 622 if ((ip_port.ip.family != AF_INET) && (ip_port.ip.family != AF_INET6))
623 return 1; 623 return 0;
624 624
625 uint32_t i, replace = ~0, bad = ~0, possibly_bad = ~0, good = ~0; 625 uint32_t i, replace = ~0, bad = ~0, possibly_bad = ~0, good = ~0;
626 626
@@ -708,14 +708,41 @@ int addto_lists(DHT *dht, IP_Port ip_port, const uint8_t *client_id)
708 } else 708 } else
709 used++; 709 used++;
710 710
711 DHT_Friend *friend_foundip = 0;
712
711 for (i = 0; i < dht->num_friends; ++i) { 713 for (i = 0; i < dht->num_friends; ++i) {
712 if (!client_or_ip_port_in_list(dht->friends_list[i].client_list, 714 if (!client_or_ip_port_in_list(dht->friends_list[i].client_list,
713 MAX_FRIEND_CLIENTS, client_id, ip_port)) { 715 MAX_FRIEND_CLIENTS, client_id, ip_port)) {
714 if (replace_all(dht->friends_list[i].client_list, MAX_FRIEND_CLIENTS, 716 if (replace_all(dht->friends_list[i].client_list, MAX_FRIEND_CLIENTS,
715 client_id, ip_port, dht->friends_list[i].client_id)) 717 client_id, ip_port, dht->friends_list[i].client_id)) {
718
719 DHT_Friend *friend = &dht->friends_list[i];
720
721 if (memcmp(client_id, friend->client_id, CLIENT_ID_SIZE) == 0) {
722 friend_foundip = friend;
723 }
724
716 used++; 725 used++;
717 } else 726 }
727 } else {
728 DHT_Friend *friend = &dht->friends_list[i];
729
730 if (memcmp(client_id, friend->client_id, CLIENT_ID_SIZE) == 0) {
731 friend_foundip = friend;
732 }
733
718 used++; 734 used++;
735 }
736 }
737
738 if (friend_foundip) {
739 uint32_t j;
740
741 for (j = 0; j < friend_foundip->lock_count; ++j) {
742 if (friend_foundip->callbacks[j].ip_callback)
743 friend_foundip->callbacks[j].ip_callback(friend_foundip->callbacks[j].data, friend_foundip->callbacks[j].number,
744 ip_port);
745 }
719 } 746 }
720 747
721#ifdef ENABLE_ASSOC_DHT 748#ifdef ENABLE_ASSOC_DHT
@@ -1089,23 +1116,54 @@ static void get_bunchnodes(DHT *dht, Client_data *list, uint16_t length, uint16_
1089 } 1116 }
1090} 1117}
1091*/ 1118*/
1092int DHT_addfriend(DHT *dht, const uint8_t *client_id) 1119int DHT_addfriend(DHT *dht, const uint8_t *client_id, void (*ip_callback)(void *data, int32_t number, IP_Port),
1120 void *data, int32_t number, uint16_t *lock_count)
1093{ 1121{
1094 if (friend_number(dht, client_id) != -1) /* Is friend already in DHT? */ 1122 int friend_num = friend_number(dht, client_id);
1095 return 1; 1123
1124 uint16_t lock_num;
1125
1126 if (friend_num != -1) { /* Is friend already in DHT? */
1127 DHT_Friend *friend = &dht->friends_list[friend_num];
1128
1129 if (friend->lock_count == DHT_FRIEND_MAX_LOCKS)
1130 return -1;
1131
1132 lock_num = friend->lock_count;
1133 ++friend->lock_count;
1134 friend->callbacks[lock_num].ip_callback = ip_callback;
1135 friend->callbacks[lock_num].data = data;
1136 friend->callbacks[lock_num].number = number;
1137
1138 if (lock_count)
1139 *lock_count = lock_num + 1;
1140
1141 return 0;
1142 }
1096 1143
1097 DHT_Friend *temp; 1144 DHT_Friend *temp;
1098 temp = realloc(dht->friends_list, sizeof(DHT_Friend) * (dht->num_friends + 1)); 1145 temp = realloc(dht->friends_list, sizeof(DHT_Friend) * (dht->num_friends + 1));
1099 1146
1100 if (temp == NULL) 1147 if (temp == NULL)
1101 return 1; 1148 return -1;
1102 1149
1103 dht->friends_list = temp; 1150 dht->friends_list = temp;
1104 memset(&dht->friends_list[dht->num_friends], 0, sizeof(DHT_Friend)); 1151 DHT_Friend *friend = &dht->friends_list[dht->num_friends];
1105 memcpy(dht->friends_list[dht->num_friends].client_id, client_id, CLIENT_ID_SIZE); 1152 memset(friend, 0, sizeof(DHT_Friend));
1153 memcpy(friend->client_id, client_id, CLIENT_ID_SIZE);
1106 1154
1107 dht->friends_list[dht->num_friends].nat.NATping_id = random_64b(); 1155 friend->nat.NATping_id = random_64b();
1108 ++dht->num_friends; 1156 ++dht->num_friends;
1157
1158 lock_num = friend->lock_count;
1159 ++friend->lock_count;
1160 friend->callbacks[lock_num].ip_callback = ip_callback;
1161 friend->callbacks[lock_num].data = data;
1162 friend->callbacks[lock_num].number = number;
1163
1164 if (lock_count)
1165 *lock_count = lock_num + 1;
1166
1109#ifdef ENABLE_ASSOC_DHT 1167#ifdef ENABLE_ASSOC_DHT
1110 1168
1111 if (dht->assoc) { 1169 if (dht->assoc) {
@@ -1143,39 +1201,49 @@ int DHT_addfriend(DHT *dht, const uint8_t *client_id)
1143 return 0; 1201 return 0;
1144} 1202}
1145 1203
1146int DHT_delfriend(DHT *dht, const uint8_t *client_id) 1204int DHT_delfriend(DHT *dht, const uint8_t *client_id, uint16_t lock_count)
1147{ 1205{
1148 uint32_t i; 1206 int friend_num = friend_number(dht, client_id);
1149 DHT_Friend *temp;
1150 1207
1151 for (i = 0; i < dht->num_friends; ++i) { 1208 if (friend_num == -1) {
1152 /* Equal */ 1209 return -1;
1153 if (id_equal(dht->friends_list[i].client_id, client_id)) { 1210 }
1154 --dht->num_friends;
1155 1211
1156 if (dht->num_friends != i) { 1212 DHT_Friend *friend = &dht->friends_list[friend_num];
1157 memcpy( &dht->friends_list[i], 1213 --friend->lock_count;
1158 &dht->friends_list[dht->num_friends],
1159 sizeof(DHT_Friend) );
1160 }
1161 1214
1162 if (dht->num_friends == 0) { 1215 if (friend->lock_count && lock_count) { /* DHT friend is still in use.*/
1163 free(dht->friends_list); 1216 --lock_count;
1164 dht->friends_list = NULL; 1217 friend->callbacks[lock_count].ip_callback = NULL;
1165 return 0; 1218 friend->callbacks[lock_count].data = NULL;
1166 } 1219 friend->callbacks[lock_count].number = 0;
1220 return 0;
1221 }
1222
1223 uint32_t i;
1224 DHT_Friend *temp;
1167 1225
1168 temp = realloc(dht->friends_list, sizeof(DHT_Friend) * (dht->num_friends)); 1226 --dht->num_friends;
1169 1227
1170 if (temp == NULL) 1228 if (dht->num_friends != friend_num) {
1171 return 1; 1229 memcpy( &dht->friends_list[friend_num],
1230 &dht->friends_list[dht->num_friends],
1231 sizeof(DHT_Friend) );
1232 }
1172 1233
1173 dht->friends_list = temp; 1234 if (dht->num_friends == 0) {
1174 return 0; 1235 free(dht->friends_list);
1175 } 1236 dht->friends_list = NULL;
1237 return 0;
1176 } 1238 }
1177 1239
1178 return 1; 1240 temp = realloc(dht->friends_list, sizeof(DHT_Friend) * (dht->num_friends));
1241
1242 if (temp == NULL)
1243 return -1;
1244
1245 dht->friends_list = temp;
1246 return 0;
1179} 1247}
1180 1248
1181/* TODO: Optimize this. */ 1249/* TODO: Optimize this. */
@@ -2216,7 +2284,7 @@ DHT *new_DHT(Networking_Core *net)
2216 for (i = 0; i < DHT_FAKE_FRIEND_NUMBER; ++i) { 2284 for (i = 0; i < DHT_FAKE_FRIEND_NUMBER; ++i) {
2217 uint8_t random_key_bytes[CLIENT_ID_SIZE]; 2285 uint8_t random_key_bytes[CLIENT_ID_SIZE];
2218 randombytes(random_key_bytes, sizeof(random_key_bytes)); 2286 randombytes(random_key_bytes, sizeof(random_key_bytes));
2219 DHT_addfriend(dht, random_key_bytes); 2287 DHT_addfriend(dht, random_key_bytes, 0, 0, 0, 0);
2220 } 2288 }
2221 2289
2222 return dht; 2290 return dht;
diff --git a/toxcore/DHT.h b/toxcore/DHT.h
index 4beda37e..e1e14cd9 100644
--- a/toxcore/DHT.h
+++ b/toxcore/DHT.h
@@ -122,6 +122,8 @@ typedef struct {
122 uint64_t NATping_timestamp; 122 uint64_t NATping_timestamp;
123} NAT; 123} NAT;
124 124
125#define DHT_FRIEND_MAX_LOCKS 32
126
125typedef struct { 127typedef struct {
126 uint8_t client_id[CLIENT_ID_SIZE]; 128 uint8_t client_id[CLIENT_ID_SIZE];
127 Client_data client_list[MAX_FRIEND_CLIENTS]; 129 Client_data client_list[MAX_FRIEND_CLIENTS];
@@ -133,10 +135,17 @@ typedef struct {
133 135
134 /* Symetric NAT hole punching stuff. */ 136 /* Symetric NAT hole punching stuff. */
135 NAT nat; 137 NAT nat;
138
139 uint16_t lock_count;
140 struct {
141 void (*ip_callback)(void *, int32_t, IP_Port);
142 void *data;
143 int32_t number;
144 } callbacks[DHT_FRIEND_MAX_LOCKS];
145
136} DHT_Friend; 146} DHT_Friend;
137 147
138typedef struct __attribute__ ((__packed__)) 148typedef struct {
139{
140 uint8_t client_id[CLIENT_ID_SIZE]; 149 uint8_t client_id[CLIENT_ID_SIZE];
141 IP_Port ip_port; 150 IP_Port ip_port;
142} 151}
@@ -246,18 +255,25 @@ void DHT_getnodes(DHT *dht, const IP_Port *from_ipp, const uint8_t *from_id, con
246/* Add a new friend to the friends list. 255/* Add a new friend to the friends list.
247 * client_id must be CLIENT_ID_SIZE bytes long. 256 * client_id must be CLIENT_ID_SIZE bytes long.
248 * 257 *
258 * ip_callback is the callback of a function that will be called when the ip address
259 * is found along with arguments data and number.
260 *
261 * lock_count will be set to a non zero number that must be passed to DHT_delfriend()
262 * to properly remove the callback.
263 *
249 * return 0 if success. 264 * return 0 if success.
250 * return 1 if failure (friends list is full). 265 * return -1 if failure (friends list is full).
251 */ 266 */
252int DHT_addfriend(DHT *dht, const uint8_t *client_id); 267int DHT_addfriend(DHT *dht, const uint8_t *client_id, void (*ip_callback)(void *data, int32_t number, IP_Port),
268 void *data, int32_t number, uint16_t *lock_count);
253 269
254/* Delete a friend from the friends list. 270/* Delete a friend from the friends list.
255 * client_id must be CLIENT_ID_SIZE bytes long. 271 * client_id must be CLIENT_ID_SIZE bytes long.
256 * 272 *
257 * return 0 if success. 273 * return 0 if success.
258 * return 1 if failure (client_id not in friends list). 274 * return -1 if failure (client_id not in friends list).
259 */ 275 */
260int DHT_delfriend(DHT *dht, const uint8_t *client_id); 276int DHT_delfriend(DHT *dht, const uint8_t *client_id, uint16_t lock_count);
261 277
262/* Get ip of friend. 278/* Get ip of friend.
263 * client_id must be CLIENT_ID_SIZE bytes long. 279 * client_id must be CLIENT_ID_SIZE bytes long.
diff --git a/toxcore/Makefile.inc b/toxcore/Makefile.inc
index 8e39f96e..9fd1f94a 100644
--- a/toxcore/Makefile.inc
+++ b/toxcore/Makefile.inc
@@ -19,6 +19,8 @@ libtoxcore_la_SOURCES = ../toxcore/DHT.h \
19 ../toxcore/friend_requests.c \ 19 ../toxcore/friend_requests.c \
20 ../toxcore/LAN_discovery.h \ 20 ../toxcore/LAN_discovery.h \
21 ../toxcore/LAN_discovery.c \ 21 ../toxcore/LAN_discovery.c \
22 ../toxcore/friend_connection.h \
23 ../toxcore/friend_connection.c \
22 ../toxcore/Messenger.h \ 24 ../toxcore/Messenger.h \
23 ../toxcore/Messenger.c \ 25 ../toxcore/Messenger.c \
24 ../toxcore/ping.h \ 26 ../toxcore/ping.h \
@@ -27,8 +29,8 @@ libtoxcore_la_SOURCES = ../toxcore/DHT.h \
27 ../toxcore/tox.c \ 29 ../toxcore/tox.c \
28 ../toxcore/util.h \ 30 ../toxcore/util.h \
29 ../toxcore/util.c \ 31 ../toxcore/util.c \
30 ../toxcore/group_chats.h \ 32 ../toxcore/group.h \
31 ../toxcore/group_chats.c \ 33 ../toxcore/group.c \
32 ../toxcore/assoc.h \ 34 ../toxcore/assoc.h \
33 ../toxcore/assoc.c \ 35 ../toxcore/assoc.c \
34 ../toxcore/onion.h \ 36 ../toxcore/onion.h \
diff --git a/toxcore/Messenger.c b/toxcore/Messenger.c
index 3fc2cc63..75210830 100644
--- a/toxcore/Messenger.c
+++ b/toxcore/Messenger.c
@@ -153,20 +153,9 @@ void getaddress(const Messenger *m, uint8_t *address)
153 memcpy(address + crypto_box_PUBLICKEYBYTES + sizeof(nospam), &checksum, sizeof(checksum)); 153 memcpy(address + crypto_box_PUBLICKEYBYTES + sizeof(nospam), &checksum, sizeof(checksum));
154} 154}
155 155
156/* callback for recv TCP relay nodes. */ 156static int handle_status(void *object, int i, uint8_t status);
157static int tcp_relay_node_callback(void *object, uint32_t number, IP_Port ip_port, const uint8_t *public_key) 157static int handle_packet(void *object, int i, uint8_t *temp, uint16_t len);
158{ 158static int handle_custom_lossy_packet(void *object, int friend_num, const uint8_t *packet, uint16_t length);
159 Messenger *m = object;
160
161 if (friend_not_valid(m, number))
162 return -1;
163
164 if (m->friendlist[number].crypt_connection_id != -1) {
165 return add_tcp_relay_peer(m->net_crypto, m->friendlist[number].crypt_connection_id, ip_port, public_key);
166 } else {
167 return add_tcp_relay(m->net_crypto, ip_port, public_key);
168 }
169}
170 159
171/* 160/*
172 * Add a friend. 161 * Add a friend.
@@ -230,18 +219,17 @@ int32_t m_addfriend(Messenger *m, const uint8_t *address, const uint8_t *data, u
230 219
231 memset(&(m->friendlist[m->numfriends]), 0, sizeof(Friend)); 220 memset(&(m->friendlist[m->numfriends]), 0, sizeof(Friend));
232 221
233 int32_t onion_friendnum = onion_addfriend(m->onion_c, client_id); 222 int friendcon_id = new_friend_connection(m->fr_c, client_id);
234 223
235 if (onion_friendnum == -1) 224 if (friendcon_id == -1)
236 return FAERR_UNKNOWN; 225 return -1;
237 226
238 uint32_t i; 227 uint32_t i;
239 228
240 for (i = 0; i <= m->numfriends; ++i) { 229 for (i = 0; i <= m->numfriends; ++i) {
241 if (m->friendlist[i].status == NOFRIEND) { 230 if (m->friendlist[i].status == NOFRIEND) {
242 m->friendlist[i].onion_friendnum = onion_friendnum;
243 m->friendlist[i].status = FRIEND_ADDED; 231 m->friendlist[i].status = FRIEND_ADDED;
244 m->friendlist[i].crypt_connection_id = -1; 232 m->friendlist[i].friendcon_id = friendcon_id;
245 m->friendlist[i].friendrequest_lastsent = 0; 233 m->friendlist[i].friendrequest_lastsent = 0;
246 m->friendlist[i].friendrequest_timeout = FRIENDREQUEST_TIMEOUT; 234 m->friendlist[i].friendrequest_timeout = FRIENDREQUEST_TIMEOUT;
247 id_copy(m->friendlist[i].client_id, client_id); 235 id_copy(m->friendlist[i].client_id, client_id);
@@ -258,7 +246,9 @@ int32_t m_addfriend(Messenger *m, const uint8_t *address, const uint8_t *data, u
258 m->friendlist[i].message_id = 0; 246 m->friendlist[i].message_id = 0;
259 m->friendlist[i].receives_read_receipts = 1; /* Default: YES. */ 247 m->friendlist[i].receives_read_receipts = 1; /* Default: YES. */
260 memcpy(&(m->friendlist[i].friendrequest_nospam), address + crypto_box_PUBLICKEYBYTES, sizeof(uint32_t)); 248 memcpy(&(m->friendlist[i].friendrequest_nospam), address + crypto_box_PUBLICKEYBYTES, sizeof(uint32_t));
261 recv_tcp_relay_handler(m->onion_c, onion_friendnum, &tcp_relay_node_callback, m, i); 249 friend_connection_callbacks(m->fr_c, friendcon_id, MESSENGER_CALLBACK_INDEX, &handle_status, &handle_packet,
250 &handle_custom_lossy_packet, m, i);
251
262 252
263 if (m->numfriends == i) 253 if (m->numfriends == i)
264 ++m->numfriends; 254 ++m->numfriends;
@@ -287,18 +277,17 @@ int32_t m_addfriend_norequest(Messenger *m, const uint8_t *client_id)
287 277
288 memset(&(m->friendlist[m->numfriends]), 0, sizeof(Friend)); 278 memset(&(m->friendlist[m->numfriends]), 0, sizeof(Friend));
289 279
290 int32_t onion_friendnum = onion_addfriend(m->onion_c, client_id); 280 int friendcon_id = new_friend_connection(m->fr_c, client_id);
291 281
292 if (onion_friendnum == -1) 282 if (friendcon_id == -1)
293 return -1; 283 return -1;
294 284
295 uint32_t i; 285 uint32_t i;
296 286
297 for (i = 0; i <= m->numfriends; ++i) { 287 for (i = 0; i <= m->numfriends; ++i) {
298 if (m->friendlist[i].status == NOFRIEND) { 288 if (m->friendlist[i].status == NOFRIEND) {
299 m->friendlist[i].onion_friendnum = onion_friendnum;
300 m->friendlist[i].status = FRIEND_CONFIRMED; 289 m->friendlist[i].status = FRIEND_CONFIRMED;
301 m->friendlist[i].crypt_connection_id = -1; 290 m->friendlist[i].friendcon_id = friendcon_id;
302 m->friendlist[i].friendrequest_lastsent = 0; 291 m->friendlist[i].friendrequest_lastsent = 0;
303 id_copy(m->friendlist[i].client_id, client_id); 292 id_copy(m->friendlist[i].client_id, client_id);
304 m->friendlist[i].statusmessage = calloc(1, 1); 293 m->friendlist[i].statusmessage = calloc(1, 1);
@@ -311,7 +300,8 @@ int32_t m_addfriend_norequest(Messenger *m, const uint8_t *client_id)
311 m->friendlist[i].is_typing = 0; 300 m->friendlist[i].is_typing = 0;
312 m->friendlist[i].message_id = 0; 301 m->friendlist[i].message_id = 0;
313 m->friendlist[i].receives_read_receipts = 1; /* Default: YES. */ 302 m->friendlist[i].receives_read_receipts = 1; /* Default: YES. */
314 recv_tcp_relay_handler(m->onion_c, onion_friendnum, &tcp_relay_node_callback, m, i); 303 friend_connection_callbacks(m->fr_c, friendcon_id, MESSENGER_CALLBACK_INDEX, &handle_status, &handle_packet,
304 &handle_custom_lossy_packet, m, i);
315 305
316 if (m->numfriends == i) 306 if (m->numfriends == i)
317 ++m->numfriends; 307 ++m->numfriends;
@@ -336,11 +326,11 @@ int m_delfriend(Messenger *m, int32_t friendnumber)
336 if (m->friendlist[friendnumber].status == FRIEND_ONLINE) 326 if (m->friendlist[friendnumber].status == FRIEND_ONLINE)
337 remove_online_friend(m, friendnumber); 327 remove_online_friend(m, friendnumber);
338 328
339 onion_delfriend(m->onion_c, m->friendlist[friendnumber].onion_friendnum);
340 crypto_kill(m->net_crypto, m->friendlist[friendnumber].crypt_connection_id);
341 free(m->friendlist[friendnumber].statusmessage); 329 free(m->friendlist[friendnumber].statusmessage);
342 free(m->friendlist[friendnumber].avatar_recv_data); 330 free(m->friendlist[friendnumber].avatar_recv_data);
343 remove_request_received(&(m->fr), m->friendlist[friendnumber].client_id); 331 remove_request_received(&(m->fr), m->friendlist[friendnumber].client_id);
332 friend_connection_callbacks(m->fr_c, m->friendlist[friendnumber].friendcon_id, MESSENGER_CALLBACK_INDEX, 0, 0, 0, 0, 0);
333 kill_friend_connection(m->fr_c, m->friendlist[friendnumber].friendcon_id);
344 memset(&(m->friendlist[friendnumber]), 0, sizeof(Friend)); 334 memset(&(m->friendlist[friendnumber]), 0, sizeof(Friend));
345 uint32_t i; 335 uint32_t i;
346 336
@@ -492,10 +482,6 @@ int setname(Messenger *m, const uint8_t *name, uint16_t length)
492 for (i = 0; i < m->numfriends; ++i) 482 for (i = 0; i < m->numfriends; ++i)
493 m->friendlist[i].name_sent = 0; 483 m->friendlist[i].name_sent = 0;
494 484
495 for (i = 0; i < m->numchats; i++)
496 if (m->chats[i] != NULL)
497 set_nick(m->chats[i], name, length); /* TODO: remove this (group nicks should not be tied to the global one) */
498
499 return 0; 485 return 0;
500} 486}
501 487
@@ -826,16 +812,6 @@ static int send_user_istyping(const Messenger *m, int32_t friendnumber, uint8_t
826 return write_cryptpacket_id(m, friendnumber, PACKET_ID_TYPING, &typing, sizeof(typing), 0); 812 return write_cryptpacket_id(m, friendnumber, PACKET_ID_TYPING, &typing, sizeof(typing), 0);
827} 813}
828 814
829static int send_ping(const Messenger *m, int32_t friendnumber)
830{
831 int ret = write_cryptpacket_id(m, friendnumber, PACKET_ID_ALIVE, 0, 0, 0);
832
833 if (ret == 1)
834 m->friendlist[friendnumber].ping_lastsent = unix_time();
835
836 return ret;
837}
838
839static int send_relays(const Messenger *m, int32_t friendnumber) 815static int send_relays(const Messenger *m, int32_t friendnumber)
840{ 816{
841 Node_format nodes[MAX_SHARED_RELAYS]; 817 Node_format nodes[MAX_SHARED_RELAYS];
@@ -982,8 +958,6 @@ static void check_friend_connectionstatus(Messenger *m, int32_t friendnumber, ui
982 const uint8_t was_online = m->friendlist[friendnumber].status == FRIEND_ONLINE; 958 const uint8_t was_online = m->friendlist[friendnumber].status == FRIEND_ONLINE;
983 const uint8_t is_online = status == FRIEND_ONLINE; 959 const uint8_t is_online = status == FRIEND_ONLINE;
984 960
985 onion_set_friend_online(m->onion_c, m->friendlist[friendnumber].onion_friendnum, is_online);
986
987 if (is_online != was_online) { 961 if (is_online != was_online) {
988 if (was_online) { 962 if (was_online) {
989 break_files(m, friendnumber); 963 break_files(m, friendnumber);
@@ -1024,464 +998,31 @@ static int write_cryptpacket_id(const Messenger *m, int32_t friendnumber, uint8_
1024 if (length != 0) 998 if (length != 0)
1025 memcpy(packet + 1, data, length); 999 memcpy(packet + 1, data, length);
1026 1000
1027 return write_cryptpacket(m->net_crypto, m->friendlist[friendnumber].crypt_connection_id, packet, length + 1, 1001 return write_cryptpacket(m->net_crypto, friend_connection_crypt_connection_id(m->fr_c,
1028 congestion_control) != -1; 1002 m->friendlist[friendnumber].friendcon_id), packet, length + 1, congestion_control) != -1;
1029} 1003}
1030 1004
1031/**********GROUP CHATS************/ 1005/**********GROUP CHATS************/
1032 1006
1033/* return 1 if the groupnumber is not valid.
1034 * return 0 if the groupnumber is valid.
1035 */
1036static uint8_t groupnumber_not_valid(const Messenger *m, int groupnumber)
1037{
1038 if ((unsigned int)groupnumber >= m->numchats)
1039 return 1;
1040
1041 if (m->chats == NULL)
1042 return 1;
1043
1044 if (m->chats[groupnumber] == NULL)
1045 return 1;
1046
1047 return 0;
1048}
1049
1050
1051/* returns valid ip port of connected friend on success
1052 * returns zeroed out IP_Port on failure
1053 */
1054static IP_Port get_friend_ipport(const Messenger *m, int32_t friendnumber)
1055{
1056 IP_Port zero;
1057 memset(&zero, 0, sizeof(zero));
1058
1059 if (friend_not_valid(m, friendnumber))
1060 return zero;
1061
1062 int crypt_id = m->friendlist[friendnumber].crypt_connection_id;
1063
1064 uint8_t direct_connected;
1065
1066 if (crypto_connection_status(m->net_crypto, crypt_id, &direct_connected) != CRYPTO_CONN_ESTABLISHED)
1067 return zero;
1068
1069 if (direct_connected == 0)
1070 return zero;
1071
1072 return m->net_crypto->crypto_connections[crypt_id].ip_port;
1073}
1074
1075/* returns the group number of the chat with public key group_public_key.
1076 * returns -1 on failure.
1077 */
1078static int group_num(const Messenger *m, const uint8_t *group_public_key)
1079{
1080 uint32_t i;
1081
1082 for (i = 0; i < m->numchats; ++i) {
1083 if (m->chats[i] != NULL)
1084 if (id_equal(m->chats[i]->self_public_key, group_public_key))
1085 return i;
1086 }
1087
1088 return -1;
1089}
1090 1007
1091/* Set the callback for group invites. 1008/* Set the callback for group invites.
1092 * 1009 *
1093 * Function(Messenger *m, int32_t friendnumber, uint8_t *group_public_key, void *userdata) 1010 * Function(Messenger *m, int32_t friendnumber, uint8_t *data, uint16_t length)
1094 */ 1011 */
1095void m_callback_group_invite(Messenger *m, void (*function)(Messenger *m, int32_t, const uint8_t *, void *), 1012void m_callback_group_invite(Messenger *m, void (*function)(Messenger *m, int32_t, const uint8_t *, uint16_t))
1096 void *userdata)
1097{ 1013{
1098 m->group_invite = function; 1014 m->group_invite = function;
1099 m->group_invite_userdata = userdata;
1100} 1015}
1101 1016
1102/* Set the callback for group messages.
1103 *
1104 * Function(Tox *tox, int groupnumber, int friendgroupnumber, uint8_t * message, uint16_t length, void *userdata)
1105 */
1106void m_callback_group_message(Messenger *m, void (*function)(Messenger *m, int, int, const uint8_t *, uint16_t, void *),
1107 void *userdata)
1108{
1109 m->group_message = function;
1110 m->group_message_userdata = userdata;
1111}
1112 1017
1113/* Set the callback for group actions. 1018/* Send a group invite packet.
1114 * 1019 *
1115 * Function(Tox *tox, int groupnumber, int friendgroupnumber, uint8_t * message, uint16_t length, void *userdata) 1020 * return 1 on success
1116 */ 1021 * return 0 on failure
1117void m_callback_group_action(Messenger *m, void (*function)(Messenger *m, int, int, const uint8_t *, uint16_t, void *),
1118 void *userdata)
1119{
1120 m->group_action = function;
1121 m->group_action_userdata = userdata;
1122}
1123
1124/* Set callback function for peer name list changes.
1125 *
1126 * It gets called every time the name list changes(new peer/name, deleted peer)
1127 * Function(Tox *tox, int groupnumber, void *userdata)
1128 */
1129void m_callback_group_namelistchange(Messenger *m, void (*function)(Messenger *m, int, int, uint8_t, void *),
1130 void *userdata)
1131{
1132 m->group_namelistchange = function;
1133 m->group_namelistchange_userdata = userdata;
1134}
1135
1136static int get_chat_num(const Messenger *m, const Group_Chat *chat)
1137{
1138 uint32_t i;
1139
1140 for (i = 0; i < m->numchats; ++i) { //TODO: remove this
1141 if (m->chats[i] == chat)
1142 return i;
1143 }
1144
1145 return -1;
1146}
1147
1148static void group_message_function(Group_Chat *chat, int peer_number, const uint8_t *message, uint16_t length,
1149 void *userdata)
1150{
1151 Messenger *m = userdata;
1152 int i = get_chat_num(m, chat);
1153
1154 if (i == -1)
1155 return;
1156
1157 uint8_t message_terminated[length + 1];
1158 memcpy(message_terminated, message, length);
1159 message_terminated[length] = 0; /* Force NULL terminator */
1160
1161 if (m->group_message)
1162 (*m->group_message)(m, i, peer_number, message_terminated, length, m->group_message_userdata);
1163}
1164
1165static void group_action_function(Group_Chat *chat, int peer_number, const uint8_t *action, uint16_t length,
1166 void *userdata)
1167{
1168 Messenger *m = userdata;
1169 int i = get_chat_num(m, chat);
1170
1171 if (i == -1)
1172 return;
1173
1174 uint8_t action_terminated[length + 1];
1175 memcpy(action_terminated, action, length);
1176 action_terminated[length] = 0; /* Force NULL terminator */
1177
1178 if (m->group_action)
1179 (*m->group_action)(m, i, peer_number, action_terminated, length, m->group_action_userdata);
1180}
1181
1182static void group_namelistchange_function(Group_Chat *chat, int peer, uint8_t change, void *userdata)
1183{
1184 Messenger *m = userdata;
1185 int i = get_chat_num(m, chat);
1186
1187 if (i == -1)
1188 return;
1189
1190 if (m->group_namelistchange)
1191 (*m->group_namelistchange)(m, i, peer, change, m->group_namelistchange_userdata);
1192}
1193
1194
1195/* Creates a new groupchat and puts it in the chats array.
1196 *
1197 * return group number on success.
1198 * return -1 on failure.
1199 */
1200int add_groupchat(Messenger *m)
1201{
1202 uint32_t i;
1203
1204 for (i = 0; i < m->numchats; ++i) {
1205 if (m->chats[i] == NULL) {
1206 Group_Chat *newchat = new_groupchat(m->net);
1207
1208 if (newchat == NULL)
1209 return -1;
1210
1211 callback_groupmessage(newchat, &group_message_function, m);
1212 callback_groupaction(newchat, &group_action_function, m);
1213 callback_namelistchange(newchat, &group_namelistchange_function, m);
1214 /* TODO: remove this (group nicks should not be tied to the global one) */
1215 set_nick(newchat, m->name, m->name_length);
1216 m->chats[i] = newchat;
1217 return i;
1218 }
1219 }
1220
1221 Group_Chat **temp;
1222 temp = realloc(m->chats, sizeof(Group_Chat *) * (m->numchats + 1));
1223
1224 if (temp == NULL)
1225 return -1;
1226
1227 m->chats = temp;
1228 temp[m->numchats] = new_groupchat(m->net);
1229
1230 if (temp[m->numchats] == NULL)
1231 return -1;
1232
1233 callback_groupmessage(temp[m->numchats], &group_message_function, m);
1234 callback_groupaction(temp[m->numchats], &group_action_function, m);
1235 callback_namelistchange(temp[m->numchats], &group_namelistchange_function, m);
1236 /* TODO: remove this (group nicks should not be tied to the global one) */
1237 set_nick(temp[m->numchats], m->name, m->name_length);
1238 ++m->numchats;
1239 return (m->numchats - 1);
1240}
1241
1242/* Delete a groupchat from the chats array.
1243 *
1244 * return 0 on success.
1245 * return -1 if failure.
1246 */
1247int del_groupchat(Messenger *m, int groupnumber)
1248{
1249 if ((unsigned int)groupnumber >= m->numchats)
1250 return -1;
1251
1252 if (m->chats == NULL)
1253 return -1;
1254
1255 if (m->chats[groupnumber] == NULL)
1256 return -1;
1257
1258 kill_groupchat(m->chats[groupnumber]);
1259 m->chats[groupnumber] = NULL;
1260
1261 uint32_t i;
1262
1263 for (i = m->numchats; i != 0; --i) {
1264 if (m->chats[i - 1] != NULL)
1265 break;
1266 }
1267
1268 m->numchats = i;
1269
1270 if (i == 0) {
1271 free(m->chats);
1272 m->chats = NULL;
1273 } else {
1274 Group_Chat **temp = realloc(m->chats, sizeof(Group_Chat *) * i);
1275
1276 if (temp != NULL)
1277 m->chats = temp;
1278 }
1279
1280 return 0;
1281}
1282
1283/* Copy the name of peernumber who is in groupnumber to name.
1284 * name must be at least MAX_NICK_BYTES long.
1285 *
1286 * return length of name if success
1287 * return -1 if failure
1288 */
1289int m_group_peername(const Messenger *m, int groupnumber, int peernumber, uint8_t *name)
1290{
1291 if ((unsigned int)groupnumber >= m->numchats)
1292 return -1;
1293
1294 if (m->chats == NULL)
1295 return -1;
1296
1297 if (m->chats[groupnumber] == NULL)
1298 return -1;
1299
1300 return group_peername(m->chats[groupnumber], peernumber, name);
1301}
1302
1303/* Store the fact that we invited a specific friend.
1304 */
1305static void group_store_friendinvite(Messenger *m, int32_t friendnumber, int groupnumber)
1306{
1307 /* Add 1 to the groupchat number because 0 (default value in invited_groups) is a valid groupchat number */
1308 m->friendlist[friendnumber].invited_groups[m->friendlist[friendnumber].invited_groups_num % MAX_INVITED_GROUPS] =
1309 groupnumber + 1;
1310 ++m->friendlist[friendnumber].invited_groups_num;
1311}
1312
1313/* return 1 if that friend was invited to the group
1314 * return 0 if the friend was not or error.
1315 */
1316static uint8_t group_invited(const Messenger *m, int32_t friendnumber, int groupnumber)
1317{
1318
1319 uint32_t i;
1320 uint16_t num = MAX_INVITED_GROUPS;
1321
1322 if (MAX_INVITED_GROUPS > m->friendlist[friendnumber].invited_groups_num)
1323 num = m->friendlist[friendnumber].invited_groups_num;
1324
1325 for (i = 0; i < num; ++i) {
1326 if (m->friendlist[friendnumber].invited_groups[i] == groupnumber + 1) {
1327 return 1;
1328 }
1329 }
1330
1331 return 0;
1332}
1333
1334/* invite friendnumber to groupnumber
1335 * return 0 on success
1336 * return -1 on failure
1337 */
1338int invite_friend(Messenger *m, int32_t friendnumber, int groupnumber)
1339{
1340 if (friend_not_valid(m, friendnumber) || (unsigned int)groupnumber >= m->numchats)
1341 return -1;
1342
1343 if (m->chats == NULL)
1344 return -1;
1345
1346 if (m->friendlist[friendnumber].status == NOFRIEND || m->chats[groupnumber] == NULL)
1347 return -1;
1348
1349 group_store_friendinvite(m, friendnumber, groupnumber);
1350
1351 if (write_cryptpacket_id(m, friendnumber, PACKET_ID_INVITE_GROUPCHAT, m->chats[groupnumber]->self_public_key,
1352 crypto_box_PUBLICKEYBYTES, 0) == 0)
1353 return -1;
1354
1355 return 0;
1356}
1357
1358
1359/* Join a group (you need to have been invited first.)
1360 *
1361 * returns group number on success
1362 * returns -1 on failure.
1363 */
1364int join_groupchat(Messenger *m, int32_t friendnumber, const uint8_t *friend_group_public_key)
1365{
1366 if (friend_not_valid(m, friendnumber))
1367 return -1;
1368
1369 uint8_t data[crypto_box_PUBLICKEYBYTES * 2];
1370 int groupnum = add_groupchat(m);
1371
1372 if (groupnum == -1)
1373 return -1;
1374
1375 IP_Port friend_ip = get_friend_ipport(m, friendnumber);
1376
1377 if (friend_ip.ip.family == 0) {
1378 del_groupchat(m, groupnum);
1379 return -1;
1380 }
1381
1382 id_copy(data, friend_group_public_key);
1383 id_copy(data + crypto_box_PUBLICKEYBYTES, m->chats[groupnum]->self_public_key);
1384
1385 if (write_cryptpacket_id(m, friendnumber, PACKET_ID_JOIN_GROUPCHAT, data, sizeof(data), 0)) {
1386 chat_bootstrap_nonlazy(m->chats[groupnum], get_friend_ipport(m, friendnumber),
1387 friend_group_public_key); //TODO: check if ip returned is zero?
1388 return groupnum;
1389 }
1390
1391 del_groupchat(m, groupnum);
1392 return -1;
1393}
1394
1395
1396/* send a group message
1397 * return 0 on success
1398 * return -1 on failure
1399 */
1400int group_message_send(const Messenger *m, int groupnumber, const uint8_t *message, uint32_t length)
1401{
1402 if (groupnumber_not_valid(m, groupnumber))
1403 return -1;
1404
1405 if (group_sendmessage(m->chats[groupnumber], message, length) > 0)
1406 return 0;
1407
1408 return -1;
1409}
1410
1411/* send a group action
1412 * return 0 on success
1413 * return -1 on failure
1414 */
1415int group_action_send(const Messenger *m, int groupnumber, const uint8_t *action, uint32_t length)
1416{
1417 if (groupnumber_not_valid(m, groupnumber))
1418 return -1;
1419
1420 if (group_sendaction(m->chats[groupnumber], action, length) > 0)
1421 return 0;
1422
1423 return -1;
1424}
1425
1426/* Return the number of peers in the group chat on success.
1427 * return -1 on failure
1428 */
1429int group_number_peers(const Messenger *m, int groupnumber)
1430{
1431 if (groupnumber_not_valid(m, groupnumber))
1432 return -1;
1433
1434 return group_numpeers(m->chats[groupnumber]);
1435}
1436
1437/* List all the peers in the group chat.
1438 *
1439 * Copies the names of the peers to the name[length][MAX_NICK_BYTES] array.
1440 *
1441 * Copies the lengths of the names to lengths[length]
1442 *
1443 * returns the number of peers on success.
1444 *
1445 * return -1 on failure.
1446 */ 1022 */
1447int group_names(const Messenger *m, int groupnumber, uint8_t names[][MAX_NICK_BYTES], uint16_t lengths[], 1023int send_group_invite_packet(const Messenger *m, int32_t friendnumber, const uint8_t *data, uint16_t length)
1448 uint16_t length)
1449{ 1024{
1450 if (groupnumber_not_valid(m, groupnumber)) 1025 return write_cryptpacket_id(m, friendnumber, PACKET_ID_INVITE_GROUPCHAT, data, length, 0);
1451 return -1;
1452
1453 return group_client_names(m->chats[groupnumber], names, lengths, length);
1454}
1455
1456static int handle_group(void *object, IP_Port source, const uint8_t *packet, uint32_t length)
1457{
1458 Messenger *m = object;
1459
1460 if (length < crypto_box_PUBLICKEYBYTES + 1) {
1461 return 1;
1462 }
1463
1464 uint32_t i;
1465
1466 for (i = 0; i < m->numchats; ++i) {
1467 if (m->chats[i] == NULL)
1468 continue;
1469
1470 if (id_equal(packet + 1, m->chats[i]->self_public_key))
1471 return handle_groupchatpacket(m->chats[i], source, packet, length);
1472 }
1473
1474 return 1;
1475}
1476
1477static void do_allgroupchats(Messenger *m)
1478{
1479 uint32_t i;
1480
1481 for (i = 0; i < m->numchats; ++i) {
1482 if (m->chats[i] != NULL)
1483 do_groupchat(m->chats[i]);
1484 }
1485} 1026}
1486 1027
1487/****************FILE SENDING*****************/ 1028/****************FILE SENDING*****************/
@@ -1684,8 +1225,9 @@ int file_data(const Messenger *m, int32_t friendnumber, uint8_t filenumber, cons
1684 if (m->friendlist[friendnumber].file_sending[filenumber].status != FILESTATUS_TRANSFERRING) 1225 if (m->friendlist[friendnumber].file_sending[filenumber].status != FILESTATUS_TRANSFERRING)
1685 return -1; 1226 return -1;
1686 1227
1687 /* Prevent file sending from filling up the entire buffer preventing messages from being sent. */ 1228 /* Prevent file sending from filling up the entire buffer preventing messages from being sent. TODO: remove */
1688 if (crypto_num_free_sendqueue_slots(m->net_crypto, m->friendlist[friendnumber].crypt_connection_id) < MIN_SLOTS_FREE) 1229 if (crypto_num_free_sendqueue_slots(m->net_crypto, friend_connection_crypt_connection_id(m->fr_c,
1230 m->friendlist[friendnumber].friendcon_id)) < MIN_SLOTS_FREE)
1689 return -1; 1231 return -1;
1690 1232
1691 uint8_t packet[MAX_CRYPTO_DATA_SIZE]; 1233 uint8_t packet[MAX_CRYPTO_DATA_SIZE];
@@ -1891,10 +1433,8 @@ int send_custom_lossy_packet(const Messenger *m, int32_t friendnumber, const uin
1891 if (m->friendlist[friendnumber].status != FRIEND_ONLINE) 1433 if (m->friendlist[friendnumber].status != FRIEND_ONLINE)
1892 return -1; 1434 return -1;
1893 1435
1894 if (m->friendlist[friendnumber].crypt_connection_id == -1) 1436 return send_lossy_cryptpacket(m->net_crypto, friend_connection_crypt_connection_id(m->fr_c,
1895 return -1; 1437 m->friendlist[friendnumber].friendcon_id), data, length);
1896
1897 return send_lossy_cryptpacket(m->net_crypto, m->friendlist[friendnumber].crypt_connection_id, data, length);
1898} 1438}
1899 1439
1900static int handle_custom_lossless_packet(void *object, int friend_num, const uint8_t *packet, uint16_t length) 1440static int handle_custom_lossless_packet(void *object, int friend_num, const uint8_t *packet, uint16_t length)
@@ -1952,10 +1492,8 @@ int send_custom_lossless_packet(const Messenger *m, int32_t friendnumber, const
1952 if (m->friendlist[friendnumber].status != FRIEND_ONLINE) 1492 if (m->friendlist[friendnumber].status != FRIEND_ONLINE)
1953 return -1; 1493 return -1;
1954 1494
1955 if (m->friendlist[friendnumber].crypt_connection_id == -1) 1495 if (write_cryptpacket(m->net_crypto, friend_connection_crypt_connection_id(m->fr_c,
1956 return -1; 1496 m->friendlist[friendnumber].friendcon_id), data, length, 1) == -1) {
1957
1958 if (write_cryptpacket(m->net_crypto, m->friendlist[friendnumber].crypt_connection_id, data, length, 1) == -1) {
1959 return -1; 1497 return -1;
1960 } else { 1498 } else {
1961 return 0; 1499 return 0;
@@ -1982,31 +1520,6 @@ static void LANdiscovery(Messenger *m)
1982 } 1520 }
1983} 1521}
1984 1522
1985static int handle_status(void *object, int i, uint8_t status);
1986static int handle_packet(void *object, int i, uint8_t *temp, uint16_t len);
1987
1988static int handle_new_connections(void *object, New_Connection *n_c)
1989{
1990 Messenger *m = object;
1991 int friend_id = getfriend_id(m, n_c->public_key);
1992
1993 if (friend_id != -1) {
1994 if (m->friendlist[friend_id].crypt_connection_id != -1)
1995 return -1;
1996
1997 int id = accept_crypto_connection(m->net_crypto, n_c);
1998 connection_status_handler(m->net_crypto, id, &handle_status, m, friend_id);
1999 connection_data_handler(m->net_crypto, id, &handle_packet, m, friend_id);
2000 connection_lossy_data_handler(m->net_crypto, id, &handle_custom_lossy_packet, m, friend_id);
2001 m->friendlist[friend_id].crypt_connection_id = id;
2002 set_friend_status(m, friend_id, FRIEND_CONFIRMED);
2003 return 0;
2004 }
2005
2006 return -1;
2007}
2008
2009
2010/* Run this at startup. */ 1523/* Run this at startup. */
2011Messenger *new_messenger(Messenger_Options *options) 1524Messenger *new_messenger(Messenger_Options *options)
2012{ 1525{
@@ -2053,13 +1566,13 @@ Messenger *new_messenger(Messenger_Options *options)
2053 return NULL; 1566 return NULL;
2054 } 1567 }
2055 1568
2056 new_connection_handler(m->net_crypto, &handle_new_connections, m);
2057
2058 m->onion = new_onion(m->dht); 1569 m->onion = new_onion(m->dht);
2059 m->onion_a = new_onion_announce(m->dht); 1570 m->onion_a = new_onion_announce(m->dht);
2060 m->onion_c = new_onion_client(m->net_crypto); 1571 m->onion_c = new_onion_client(m->net_crypto);
1572 m->fr_c = new_friend_connections(m->onion_c);
2061 1573
2062 if (!(m->onion && m->onion_a && m->onion_c)) { 1574 if (!(m->onion && m->onion_a && m->onion_c)) {
1575 kill_friend_connections(m->fr_c);
2063 kill_onion(m->onion); 1576 kill_onion(m->onion);
2064 kill_onion_announce(m->onion_a); 1577 kill_onion_announce(m->onion_a);
2065 kill_onion_client(m->onion_c); 1578 kill_onion_client(m->onion_c);
@@ -2076,22 +1589,15 @@ Messenger *new_messenger(Messenger_Options *options)
2076 set_nospam(&(m->fr), random_int()); 1589 set_nospam(&(m->fr), random_int());
2077 set_filter_function(&(m->fr), &friend_already_added, m); 1590 set_filter_function(&(m->fr), &friend_already_added, m);
2078 1591
2079 networking_registerhandler(m->net, NET_PACKET_GROUP_CHATS, &handle_group, m);
2080
2081 return m; 1592 return m;
2082} 1593}
2083 1594
2084/* Run this before closing shop. */ 1595/* Run this before closing shop. */
2085void kill_messenger(Messenger *m) 1596void kill_messenger(Messenger *m)
2086{ 1597{
2087 /* FIXME TODO: ideally cleanupMessenger will mirror initMessenger. 1598 uint32_t i;
2088 * This requires the other modules to expose cleanup functions.
2089 */
2090 uint32_t i, numchats = m->numchats;
2091
2092 for (i = 0; i < numchats; ++i)
2093 del_groupchat(m, i);
2094 1599
1600 kill_friend_connections(m->fr_c);
2095 kill_onion(m->onion); 1601 kill_onion(m->onion);
2096 kill_onion_announce(m->onion_a); 1602 kill_onion_announce(m->onion_a);
2097 kill_onion_client(m->onion_c); 1603 kill_onion_client(m->onion_c);
@@ -2139,8 +1645,6 @@ static int handle_status(void *object, int i, uint8_t status)
2139 m->friendlist[i].statusmessage_sent = 0; 1645 m->friendlist[i].statusmessage_sent = 0;
2140 m->friendlist[i].ping_lastrecv = temp_time; 1646 m->friendlist[i].ping_lastrecv = temp_time;
2141 } else { /* Went offline. */ 1647 } else { /* Went offline. */
2142 m->friendlist[i].crypt_connection_id = -1;
2143
2144 if (m->friendlist[i].status == FRIEND_ONLINE) { 1648 if (m->friendlist[i].status == FRIEND_ONLINE) {
2145 set_friend_status(m, i, FRIEND_CONFIRMED); 1649 set_friend_status(m, i, FRIEND_CONFIRMED);
2146 } 1650 }
@@ -2440,11 +1944,6 @@ static int handle_packet(void *object, int i, uint8_t *temp, uint16_t len)
2440 return -1; 1944 return -1;
2441 1945
2442 switch (packet_id) { 1946 switch (packet_id) {
2443 case PACKET_ID_ALIVE: {
2444 m->friendlist[i].ping_lastrecv = temp_time;
2445 break;
2446 }
2447
2448 case PACKET_ID_NICKNAME: { 1947 case PACKET_ID_NICKNAME: {
2449 if (data_length > MAX_NAME_LENGTH || data_length == 0) 1948 if (data_length > MAX_NAME_LENGTH || data_length == 0)
2450 break; 1949 break;
@@ -2614,33 +2113,15 @@ static int handle_packet(void *object, int i, uint8_t *temp, uint16_t len)
2614 } 2113 }
2615 2114
2616 case PACKET_ID_INVITE_GROUPCHAT: { 2115 case PACKET_ID_INVITE_GROUPCHAT: {
2617 if (data_length != crypto_box_PUBLICKEYBYTES) 2116 if (data_length == 0)
2618 break; 2117 break;
2619 2118
2620 if (m->group_invite) 2119 if (m->group_invite)
2621 (*m->group_invite)(m, i, data, m->group_invite_userdata); 2120 (*m->group_invite)(m, i, data, data_length);
2622 2121
2623 break; 2122 break;
2624 } 2123 }
2625 2124
2626 case PACKET_ID_JOIN_GROUPCHAT: {
2627 if (data_length != crypto_box_PUBLICKEYBYTES * 2)
2628 break;
2629
2630 int groupnum = group_num(m, data);
2631
2632 if (groupnum == -1)
2633 break;
2634
2635 if (!group_invited(m, i, groupnum))
2636 break;
2637
2638 group_newpeer(m->chats[groupnum], data + crypto_box_PUBLICKEYBYTES);
2639 /* This is just there to speedup joining. */
2640 chat_bootstrap(m->chats[groupnum], get_friend_ipport(m, i), data + crypto_box_PUBLICKEYBYTES);
2641 break;
2642 }
2643
2644 case PACKET_ID_FILE_SENDREQUEST: { 2125 case PACKET_ID_FILE_SENDREQUEST: {
2645 if (data_length < 1 + sizeof(uint64_t) + 1) 2126 if (data_length < 1 + sizeof(uint64_t) + 1)
2646 break; 2127 break;
@@ -2735,27 +2216,6 @@ static int handle_packet(void *object, int i, uint8_t *temp, uint16_t len)
2735 return 0; 2216 return 0;
2736} 2217}
2737 2218
2738static int friend_new_connection(Messenger *m, int32_t friendnumber, const uint8_t *real_public_key)
2739{
2740 if (friend_not_valid(m, friendnumber))
2741 return -1;
2742
2743 if (m->friendlist[friendnumber].crypt_connection_id != -1) {
2744 return -1;
2745 }
2746
2747 int id = new_crypto_connection(m->net_crypto, real_public_key);
2748
2749 if (id == -1)
2750 return -1;
2751
2752 m->friendlist[friendnumber].crypt_connection_id = id;
2753 connection_status_handler(m->net_crypto, id, &handle_status, m, friendnumber);
2754 connection_data_handler(m->net_crypto, id, &handle_packet, m, friendnumber);
2755 connection_lossy_data_handler(m->net_crypto, id, &handle_custom_lossy_packet, m, friendnumber);
2756 return 0;
2757}
2758
2759/* TODO: Make this function not suck. */ 2219/* TODO: Make this function not suck. */
2760void do_friends(Messenger *m) 2220void do_friends(Messenger *m)
2761{ 2221{
@@ -2782,32 +2242,6 @@ void do_friends(Messenger *m)
2782 */ 2242 */
2783 check_friend_request_timed_out(m, i, temp_time); 2243 check_friend_request_timed_out(m, i, temp_time);
2784 } 2244 }
2785
2786 friend_new_connection(m, i, m->friendlist[i].client_id);
2787 }
2788
2789 if (m->friendlist[i].crypt_connection_id != -1) {
2790 uint8_t dht_public_key1[crypto_box_PUBLICKEYBYTES];
2791 uint64_t timestamp1 = onion_getfriend_DHT_pubkey(m->onion_c, m->friendlist[i].onion_friendnum, dht_public_key1);
2792 uint8_t dht_public_key2[crypto_box_PUBLICKEYBYTES];
2793 uint64_t timestamp2 = get_connection_dht_key(m->net_crypto, m->friendlist[i].crypt_connection_id, dht_public_key2);
2794
2795 if (timestamp1 > timestamp2) {
2796 set_connection_dht_public_key(m->net_crypto, m->friendlist[i].crypt_connection_id, dht_public_key1, timestamp1);
2797 } else if (timestamp1 < timestamp2) {
2798 onion_set_friend_DHT_pubkey(m->onion_c, m->friendlist[i].onion_friendnum, dht_public_key2, timestamp2);
2799 }
2800
2801 uint8_t direct_connected;
2802 unsigned int status = crypto_connection_status(m->net_crypto, m->friendlist[i].crypt_connection_id, &direct_connected);
2803
2804 if (direct_connected == 0 || status == CRYPTO_CONN_COOKIE_REQUESTING) {
2805 IP_Port friendip;
2806
2807 if (onion_getfriendip(m->onion_c, m->friendlist[i].onion_friendnum, &friendip) == 1) {
2808 set_direct_ip_port(m->net_crypto, m->friendlist[i].crypt_connection_id, friendip);
2809 }
2810 }
2811 } 2245 }
2812 2246
2813 if (m->friendlist[i].status == FRIEND_ONLINE) { /* friend is online. */ 2247 if (m->friendlist[i].status == FRIEND_ONLINE) { /* friend is online. */
@@ -2836,17 +2270,6 @@ void do_friends(Messenger *m)
2836 m->friendlist[i].user_istyping_sent = 1; 2270 m->friendlist[i].user_istyping_sent = 1;
2837 } 2271 }
2838 2272
2839 if (m->friendlist[i].ping_lastsent + FRIEND_PING_INTERVAL < temp_time) {
2840 send_ping(m, i);
2841 }
2842
2843 if (m->friendlist[i].ping_lastrecv + FRIEND_CONNECTION_TIMEOUT < temp_time) {
2844 /* If we stopped receiving ping packets, kill it. */
2845 crypto_kill(m->net_crypto, m->friendlist[i].crypt_connection_id);
2846 m->friendlist[i].crypt_connection_id = -1;
2847 set_friend_status(m, i, FRIEND_CONFIRMED);
2848 }
2849
2850 if (m->friendlist[i].share_relays_lastsent + FRIEND_SHARE_RELAYS_INTERVAL < temp_time) { 2273 if (m->friendlist[i].share_relays_lastsent + FRIEND_SHARE_RELAYS_INTERVAL < temp_time) {
2851 send_relays(m, i); 2274 send_relays(m, i);
2852 } 2275 }
@@ -2916,8 +2339,8 @@ void do_messenger(Messenger *m)
2916 2339
2917 do_net_crypto(m->net_crypto); 2340 do_net_crypto(m->net_crypto);
2918 do_onion_client(m->onion_c); 2341 do_onion_client(m->onion_c);
2342 do_friend_connections(m->fr_c);
2919 do_friends(m); 2343 do_friends(m);
2920 do_allgroupchats(m);
2921 LANdiscovery(m); 2344 LANdiscovery(m);
2922 2345
2923#ifdef LOGGING 2346#ifdef LOGGING
@@ -2928,16 +2351,6 @@ void do_messenger(Messenger *m)
2928 Assoc_status(m->dht->assoc); 2351 Assoc_status(m->dht->assoc);
2929#endif 2352#endif
2930 2353
2931 if (m->numchats > 0) {
2932 size_t c;
2933
2934 for (c = 0; c < m->numchats; c++) {
2935 if (m->chats[c])
2936 Assoc_status(m->chats[c]->assoc);
2937 }
2938 }
2939
2940
2941 lastdump = unix_time(); 2354 lastdump = unix_time();
2942 uint32_t client, last_pinged; 2355 uint32_t client, last_pinged;
2943 2356
@@ -3007,8 +2420,8 @@ void do_messenger(Messenger *m)
3007 if (ping_lastrecv > 999) 2420 if (ping_lastrecv > 999)
3008 ping_lastrecv = 999; 2421 ping_lastrecv = 999;
3009 2422
3010 LOGGER_INFO("F[%2u:%2u] <%s> %02i [%03u] %s", 2423 LOGGER_INFO("F[%2u:%2u] <%s> [%03u] %s",
3011 dht2m[friend], friend, msgfptr->name, msgfptr->crypt_connection_id, 2424 dht2m[friend], friend, msgfptr->name,
3012 ping_lastrecv, ID2String(msgfptr->client_id)); 2425 ping_lastrecv, ID2String(msgfptr->client_id));
3013 } else { 2426 } else {
3014 LOGGER_INFO("F[--:%2u] %s", friend, ID2String(dhtfptr->client_id)); 2427 LOGGER_INFO("F[--:%2u] %s", friend, ID2String(dhtfptr->client_id));
@@ -3444,51 +2857,3 @@ int get_friendlist(const Messenger *m, int32_t **out_list, uint32_t *out_list_le
3444 2857
3445 return 0; 2858 return 0;
3446} 2859}
3447
3448/* Return the number of chats in the instance m.
3449 * You should use this to determine how much memory to allocate
3450 * for copy_chatlist. */
3451uint32_t count_chatlist(const Messenger *m)
3452{
3453 uint32_t ret = 0;
3454 uint32_t i;
3455
3456 for (i = 0; i < m->numchats; i++) {
3457 if (m->chats[i]) {
3458 ret++;
3459 }
3460 }
3461
3462 return ret;
3463}
3464
3465/* Copy a list of valid chat IDs into the array out_list.
3466 * If out_list is NULL, returns 0.
3467 * Otherwise, returns the number of elements copied.
3468 * If the array was too small, the contents
3469 * of out_list will be truncated to list_size. */
3470uint32_t copy_chatlist(const Messenger *m, int *out_list, uint32_t list_size)
3471{
3472 if (!out_list)
3473 return 0;
3474
3475 if (m->numchats == 0) {
3476 return 0;
3477 }
3478
3479 uint32_t i;
3480 uint32_t ret = 0;
3481
3482 for (i = 0; i < m->numchats; i++) {
3483 if (ret >= list_size) {
3484 break; /* Abandon ship */
3485 }
3486
3487 if (m->chats[i]) {
3488 out_list[ret] = i;
3489 ret++;
3490 }
3491 }
3492
3493 return ret;
3494}
diff --git a/toxcore/Messenger.h b/toxcore/Messenger.h
index 4a806e8c..4a5a5ae7 100644
--- a/toxcore/Messenger.h
+++ b/toxcore/Messenger.h
@@ -26,12 +26,9 @@
26#ifndef MESSENGER_H 26#ifndef MESSENGER_H
27#define MESSENGER_H 27#define MESSENGER_H
28 28
29#include "net_crypto.h"
30#include "DHT.h"
31#include "friend_requests.h" 29#include "friend_requests.h"
32#include "LAN_discovery.h" 30#include "LAN_discovery.h"
33#include "group_chats.h" 31#include "friend_connection.h"
34#include "onion_client.h"
35 32
36#define MAX_NAME_LENGTH 128 33#define MAX_NAME_LENGTH 128
37/* TODO: this must depend on other variable. */ 34/* TODO: this must depend on other variable. */
@@ -42,8 +39,7 @@
42 39
43#define FRIEND_ADDRESS_SIZE (crypto_box_PUBLICKEYBYTES + sizeof(uint32_t) + sizeof(uint16_t)) 40#define FRIEND_ADDRESS_SIZE (crypto_box_PUBLICKEYBYTES + sizeof(uint32_t) + sizeof(uint16_t))
44 41
45/* NOTE: Packet ids below 16 must never be used. */ 42/* NOTE: Packet ids below 17 must never be used. */
46#define PACKET_ID_ALIVE 16
47#define PACKET_ID_SHARE_RELAYS 17 43#define PACKET_ID_SHARE_RELAYS 17
48#define PACKET_ID_NICKNAME 48 44#define PACKET_ID_NICKNAME 48
49#define PACKET_ID_STATUSMESSAGE 49 45#define PACKET_ID_STATUSMESSAGE 49
@@ -61,12 +57,9 @@
61#define PACKET_ID_FILE_SENDREQUEST 80 57#define PACKET_ID_FILE_SENDREQUEST 80
62#define PACKET_ID_FILE_CONTROL 81 58#define PACKET_ID_FILE_CONTROL 81
63#define PACKET_ID_FILE_DATA 82 59#define PACKET_ID_FILE_DATA 82
64#define PACKET_ID_INVITE_GROUPCHAT 144 60#define PACKET_ID_INVITE_GROUPCHAT 96
65#define PACKET_ID_JOIN_GROUPCHAT 145 61#define PACKET_ID_MESSAGE_GROUPCHAT 97
66#define PACKET_ID_ACCEPT_GROUPCHAT 146
67 62
68/* Max number of groups we can invite someone at the same time to. */
69#define MAX_INVITED_GROUPS 64
70 63
71/* Max number of tcp relays sent to friends */ 64/* Max number of tcp relays sent to friends */
72#define MAX_SHARED_RELAYS 16 65#define MAX_SHARED_RELAYS 16
@@ -108,15 +101,9 @@ enum {
108/* Default start timeout in seconds between friend requests. */ 101/* Default start timeout in seconds between friend requests. */
109#define FRIENDREQUEST_TIMEOUT 5; 102#define FRIENDREQUEST_TIMEOUT 5;
110 103
111/* Interval between the sending of ping packets. */
112#define FRIEND_PING_INTERVAL 6
113
114/* Interval between the sending of tcp relay information */ 104/* Interval between the sending of tcp relay information */
115#define FRIEND_SHARE_RELAYS_INTERVAL (5 * 60) 105#define FRIEND_SHARE_RELAYS_INTERVAL (5 * 60)
116 106
117/* If no packets are received from friend in this time interval, kill the connection. */
118#define FRIEND_CONNECTION_TIMEOUT (FRIEND_PING_INTERVAL * 3)
119
120/* Must be < MAX_CRYPTO_DATA_SIZE */ 107/* Must be < MAX_CRYPTO_DATA_SIZE */
121#define AVATAR_DATA_MAX_CHUNK_SIZE (MAX_CRYPTO_DATA_SIZE-1) 108#define AVATAR_DATA_MAX_CHUNK_SIZE (MAX_CRYPTO_DATA_SIZE-1)
122 109
@@ -199,9 +186,9 @@ enum {
199}; 186};
200 187
201typedef struct { 188typedef struct {
202 uint8_t client_id[CLIENT_ID_SIZE]; 189 uint8_t client_id[crypto_box_PUBLICKEYBYTES];
203 uint32_t onion_friendnum; 190 int friendcon_id;
204 int crypt_connection_id; 191
205 uint64_t friendrequest_lastsent; // Time at which the last friend request was sent. 192 uint64_t friendrequest_lastsent; // Time at which the last friend request was sent.
206 uint32_t friendrequest_timeout; // The timeout between successful friendrequest sending attempts. 193 uint32_t friendrequest_timeout; // The timeout between successful friendrequest sending attempts.
207 uint8_t status; // 0 if no friend, 1 if added, 2 if friend request sent, 3 if confirmed friend, 4 if online. 194 uint8_t status; // 0 if no friend, 1 if added, 2 if friend request sent, 3 if confirmed friend, 4 if online.
@@ -222,13 +209,10 @@ typedef struct {
222 uint32_t message_id; // a semi-unique id used in read receipts. 209 uint32_t message_id; // a semi-unique id used in read receipts.
223 uint8_t receives_read_receipts; // shall we send read receipts to this person? 210 uint8_t receives_read_receipts; // shall we send read receipts to this person?
224 uint32_t friendrequest_nospam; // The nospam number used in the friend request. 211 uint32_t friendrequest_nospam; // The nospam number used in the friend request.
225 uint64_t ping_lastrecv; 212 uint64_t ping_lastrecv;//TODO remove
226 uint64_t ping_lastsent;
227 uint64_t share_relays_lastsent; 213 uint64_t share_relays_lastsent;
228 struct File_Transfers file_sending[MAX_CONCURRENT_FILE_PIPES]; 214 struct File_Transfers file_sending[MAX_CONCURRENT_FILE_PIPES];
229 struct File_Transfers file_receiving[MAX_CONCURRENT_FILE_PIPES]; 215 struct File_Transfers file_receiving[MAX_CONCURRENT_FILE_PIPES];
230 int invited_groups[MAX_INVITED_GROUPS];
231 uint16_t invited_groups_num;
232 216
233 AVATAR_SENDDATA avatar_send_data; 217 AVATAR_SENDDATA avatar_send_data;
234 AVATAR_RECEIVEDATA *avatar_recv_data; // We are receiving avatar data from this friend. 218 AVATAR_RECEIVEDATA *avatar_recv_data; // We are receiving avatar data from this friend.
@@ -255,6 +239,8 @@ typedef struct Messenger {
255 Onion_Announce *onion_a; 239 Onion_Announce *onion_a;
256 Onion_Client *onion_c; 240 Onion_Client *onion_c;
257 241
242 Friend_Connections *fr_c;
243
258 Friend_Requests fr; 244 Friend_Requests fr;
259 uint8_t name[MAX_NAME_LENGTH]; 245 uint8_t name[MAX_NAME_LENGTH];
260 uint16_t name_length; 246 uint16_t name_length;
@@ -274,9 +260,6 @@ typedef struct Messenger {
274 260
275 uint32_t numonline_friends; 261 uint32_t numonline_friends;
276 262
277 Group_Chat **chats;
278 uint32_t numchats;
279
280 uint64_t last_LANdiscovery; 263 uint64_t last_LANdiscovery;
281 264
282#define NUM_SAVED_TCP_RELAYS 8 265#define NUM_SAVED_TCP_RELAYS 8
@@ -308,14 +291,9 @@ typedef struct Messenger {
308 void *avatar_data_recv_userdata; 291 void *avatar_data_recv_userdata;
309 void (*avatar_data_recv)(struct Messenger *m, int32_t, uint8_t, uint8_t *, uint8_t *, uint32_t, void *); 292 void (*avatar_data_recv)(struct Messenger *m, int32_t, uint8_t, uint8_t *, uint8_t *, uint32_t, void *);
310 293
311 void (*group_invite)(struct Messenger *m, int32_t, const uint8_t *, void *); 294 void *group_chat_object; /* Set by new_groupchats()*/
312 void *group_invite_userdata; 295 void (*group_invite)(struct Messenger *m, int32_t, const uint8_t *, uint16_t);
313 void (*group_message)(struct Messenger *m, int, int, const uint8_t *, uint16_t, void *); 296 void (*group_message)(struct Messenger *m, int32_t, const uint8_t *, uint16_t);
314 void *group_message_userdata;
315 void (*group_action)(struct Messenger *m, int, int, const uint8_t *, uint16_t, void *);
316 void *group_action_userdata;
317 void (*group_namelistchange)(struct Messenger *m, int, int, uint8_t, void *);
318 void *group_namelistchange_userdata;
319 297
320 void (*file_sendrequest)(struct Messenger *m, int32_t, uint8_t, uint64_t, const uint8_t *, uint16_t, void *); 298 void (*file_sendrequest)(struct Messenger *m, int32_t, uint8_t, uint64_t, const uint8_t *, uint16_t, void *);
321 void *file_sendrequest_userdata; 299 void *file_sendrequest_userdata;
@@ -752,97 +730,16 @@ void m_callback_avatar_data(Messenger *m, void (*function)(Messenger *m, int32_t
752 730
753/* Set the callback for group invites. 731/* Set the callback for group invites.
754 * 732 *
755 * Function(Messenger *m, int32_t friendnumber, uint8_t *group_public_key, void *userdata) 733 * Function(Messenger *m, int32_t friendnumber, uint8_t *data, uint16_t length)
756 */
757void m_callback_group_invite(Messenger *m, void (*function)(Messenger *m, int32_t, const uint8_t *, void *),
758 void *userdata);
759
760/* Set the callback for group messages.
761 *
762 * Function(Tox *tox, int groupnumber, int friendgroupnumber, uint8_t * message, uint16_t length, void *userdata)
763 */
764void m_callback_group_message(Messenger *m, void (*function)(Messenger *m, int, int, const uint8_t *, uint16_t, void *),
765 void *userdata);
766
767/* Set the callback for group actions.
768 *
769 * Function(Tox *tox, int groupnumber, int friendgroupnumber, uint8_t * message, uint16_t length, void *userdata)
770 */
771void m_callback_group_action(Messenger *m, void (*function)(Messenger *m, int, int, const uint8_t *, uint16_t, void *),
772 void *userdata);
773
774/* Set callback function for peer name list changes.
775 *
776 * It gets called every time the name list changes(new peer/name, deleted peer)
777 * Function(Tox *tox, int groupnumber, void *userdata)
778 */
779void m_callback_group_namelistchange(Messenger *m, void (*function)(Messenger *m, int, int, uint8_t, void *),
780 void *userdata);
781
782/* Creates a new groupchat and puts it in the chats array.
783 *
784 * return group number on success.
785 * return -1 on failure.
786 */
787int add_groupchat(Messenger *m);
788
789/* Delete a groupchat from the chats array.
790 *
791 * return 0 on success.
792 * return -1 if failure.
793 */
794int del_groupchat(Messenger *m, int groupnumber);
795
796/* Copy the name of peernumber who is in groupnumber to name.
797 * name must be at least MAX_NICK_BYTES long.
798 *
799 * return length of name if success
800 * return -1 if failure
801 */
802int m_group_peername(const Messenger *m, int groupnumber, int peernumber, uint8_t *name);
803
804/* invite friendnumber to groupnumber
805 * return 0 on success
806 * return -1 on failure
807 */
808int invite_friend(Messenger *m, int32_t friendnumber, int groupnumber);
809
810/* Join a group (you need to have been invited first.)
811 *
812 * returns group number on success
813 * returns -1 on failure.
814 */
815int join_groupchat(Messenger *m, int32_t friendnumber, const uint8_t *friend_group_public_key);
816
817/* send a group message
818 * return 0 on success
819 * return -1 on failure
820 */
821int group_message_send(const Messenger *m, int groupnumber, const uint8_t *message, uint32_t length);
822
823/* send a group action
824 * return 0 on success
825 * return -1 on failure
826 */
827int group_action_send(const Messenger *m, int groupnumber, const uint8_t *action, uint32_t length);
828
829/* Return the number of peers in the group chat on success.
830 * return -1 on failure
831 */ 734 */
832int group_number_peers(const Messenger *m, int groupnumber); 735void m_callback_group_invite(Messenger *m, void (*function)(Messenger *m, int32_t, const uint8_t *, uint16_t));
833 736
834/* List all the peers in the group chat. 737/* Send a group invite packet.
835 * 738 *
836 * Copies the names of the peers to the name[length][MAX_NICK_BYTES] array. 739 * return 1 on success
837 * 740 * return 0 on failure
838 * Copies the lengths of the names to lengths[length]
839 *
840 * returns the number of peers on success.
841 *
842 * return -1 on failure.
843 */ 741 */
844int group_names(const Messenger *m, int groupnumber, uint8_t names[][MAX_NICK_BYTES], uint16_t lengths[], 742int send_group_invite_packet(const Messenger *m, int32_t friendnumber, const uint8_t *data, uint16_t length);
845 uint16_t length);
846 743
847/****************FILE SENDING*****************/ 744/****************FILE SENDING*****************/
848 745
@@ -1018,16 +915,4 @@ uint32_t copy_friendlist(const Messenger *m, int32_t *out_list, uint32_t list_si
1018 */ 915 */
1019int get_friendlist(const Messenger *m, int **out_list, uint32_t *out_list_length); 916int get_friendlist(const Messenger *m, int **out_list, uint32_t *out_list_length);
1020 917
1021/* Return the number of chats in the instance m.
1022 * You should use this to determine how much memory to allocate
1023 * for copy_chatlist. */
1024uint32_t count_chatlist(const Messenger *m);
1025
1026/* Copy a list of valid chat IDs into the array out_list.
1027 * If out_list is NULL, returns 0.
1028 * Otherwise, returns the number of elements copied.
1029 * If the array was too small, the contents
1030 * of out_list will be truncated to list_size. */
1031uint32_t copy_chatlist(const Messenger *m, int *out_list, uint32_t list_size);
1032
1033#endif 918#endif
diff --git a/toxcore/friend_connection.c b/toxcore/friend_connection.c
new file mode 100644
index 00000000..09dea4c3
--- /dev/null
+++ b/toxcore/friend_connection.c
@@ -0,0 +1,565 @@
1/* friend_connection.c
2 *
3 * Connection to friends.
4 *
5 * Copyright (C) 2014 Tox project All Rights Reserved.
6 *
7 * This file is part of Tox.
8 *
9 * Tox is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * Tox is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with Tox. If not, see <http://www.gnu.org/licenses/>.
21 *
22 */
23
24#ifdef HAVE_CONFIG_H
25#include "config.h"
26#endif
27
28#include "friend_connection.h"
29#include "util.h"
30
31/* return 1 if the friendcon_id is not valid.
32 * return 0 if the friendcon_id is valid.
33 */
34static uint8_t friendconn_id_not_valid(const Friend_Connections *fr_c, int friendcon_id)
35{
36 if ((unsigned int)friendcon_id >= fr_c->num_cons)
37 return 1;
38
39 if (fr_c->conns == NULL)
40 return 1;
41
42 if (fr_c->conns[friendcon_id].status == FRIENDCONN_STATUS_NONE)
43 return 1;
44
45 return 0;
46}
47
48
49/* Set the size of the friend connections list to num.
50 *
51 * return -1 if realloc fails.
52 * return 0 if it succeeds.
53 */
54static int realloc_friendconns(Friend_Connections *fr_c, uint32_t num)
55{
56 if (num == 0) {
57 free(fr_c->conns);
58 fr_c->conns = NULL;
59 return 0;
60 }
61
62 Friend_Conn *newgroup_cons = realloc(fr_c->conns, num * sizeof(Friend_Conn));
63
64 if (newgroup_cons == NULL)
65 return -1;
66
67 fr_c->conns = newgroup_cons;
68 return 0;
69}
70
71/* Create a new empty friend connection.
72 *
73 * return -1 on failure.
74 * return friendcon_id on success.
75 */
76static int create_friend_conn(Friend_Connections *fr_c)
77{
78 uint32_t i;
79
80 for (i = 0; i < fr_c->num_cons; ++i) {
81 if (fr_c->conns[i].status == FRIENDCONN_STATUS_NONE)
82 return i;
83 }
84
85 int id = -1;
86
87 if (realloc_friendconns(fr_c, fr_c->num_cons + 1) == 0) {
88 id = fr_c->num_cons;
89 ++fr_c->num_cons;
90 memset(&(fr_c->conns[id]), 0, sizeof(Friend_Conn));
91 }
92
93 return id;
94}
95
96/* Wipe a friend connection.
97 *
98 * return -1 on failure.
99 * return 0 on success.
100 */
101static int wipe_friend_conn(Friend_Connections *fr_c, int friendcon_id)
102{
103 if (friendconn_id_not_valid(fr_c, friendcon_id))
104 return -1;
105
106 uint32_t i;
107 memset(&(fr_c->conns[friendcon_id]), 0 , sizeof(Friend_Conn));
108
109 for (i = fr_c->num_cons; i != 0; --i) {
110 if (fr_c->conns[i - 1].status != FRIENDCONN_STATUS_NONE)
111 break;
112 }
113
114 if (fr_c->num_cons != i) {
115 fr_c->num_cons = i;
116 realloc_friendconns(fr_c, fr_c->num_cons);
117 }
118
119 return 0;
120}
121
122static Friend_Conn *get_conn(const Friend_Connections *fr_c, int friendcon_id)
123{
124 if (friendconn_id_not_valid(fr_c, friendcon_id))
125 return 0;
126
127 return &fr_c->conns[friendcon_id];
128}
129
130/* return friendcon_id corresponding to the real public key on success.
131 * return -1 on failure.
132 */
133int getfriend_conn_id_pk(Friend_Connections *fr_c, const uint8_t *real_pk)
134{
135 uint32_t i;
136
137 for (i = 0; i < fr_c->num_cons; ++i) {
138 Friend_Conn *friend_con = get_conn(fr_c, i);
139
140 if (friend_con) {
141 if (memcmp(friend_con->real_public_key, real_pk, crypto_box_PUBLICKEYBYTES) == 0)
142 return i;
143 }
144 }
145
146 return -1;
147}
148
149/* callback for recv TCP relay nodes. */
150static int tcp_relay_node_callback(void *object, uint32_t number, IP_Port ip_port, const uint8_t *public_key)
151{
152 Friend_Connections *fr_c = object;
153 Friend_Conn *friend_con = get_conn(fr_c, number);
154
155 if (!friend_con)
156 return -1;
157
158 if (friend_con->crypt_connection_id != -1) {
159 return add_tcp_relay_peer(fr_c->net_crypto, friend_con->crypt_connection_id, ip_port, public_key);
160 } else {
161 return add_tcp_relay(fr_c->net_crypto, ip_port, public_key);
162 }
163}
164
165static int friend_new_connection(Friend_Connections *fr_c, int friendcon_id);
166/* Callback for DHT ip_port changes. */
167static void dht_ip_callback(void *object, int32_t number, IP_Port ip_port)
168{
169 Friend_Connections *fr_c = object;
170 Friend_Conn *friend_con = get_conn(fr_c, number);
171
172 if (!friend_con)
173 return;
174
175 if (friend_con->crypt_connection_id == -1) {
176 friend_new_connection(fr_c, number);
177 }
178
179 set_direct_ip_port(fr_c->net_crypto, friend_con->crypt_connection_id, ip_port);
180 friend_con->dht_ip_port = ip_port;
181 friend_con->dht_ip_port_lastrecv = unix_time();
182}
183
184/* Callback for dht public key changes. */
185static void dht_pk_callback(void *object, int32_t number, const uint8_t *dht_public_key)
186{
187 Friend_Connections *fr_c = object;
188 Friend_Conn *friend_con = get_conn(fr_c, number);
189
190 if (!friend_con)
191 return;
192
193 friend_con->dht_ping_lastrecv = unix_time();
194
195 if (memcmp(friend_con->dht_temp_pk, dht_public_key, crypto_box_PUBLICKEYBYTES) == 0)
196 return;
197
198 if (friend_con->dht_lock) {
199 if (DHT_delfriend(fr_c->dht, friend_con->dht_temp_pk, friend_con->dht_lock) != 0) {
200 printf("a. Could not delete dht peer. Please report this.\n");
201 return;
202 }
203
204 friend_con->dht_lock = 0;
205 }
206
207 DHT_addfriend(fr_c->dht, dht_public_key, dht_ip_callback, object, number, &friend_con->dht_lock);
208
209 if (friend_con->crypt_connection_id == -1) {
210 friend_new_connection(fr_c, number);
211 }
212
213 set_connection_dht_public_key(fr_c->net_crypto, friend_con->crypt_connection_id, dht_public_key);
214 onion_set_friend_DHT_pubkey(fr_c->onion_c, friend_con->onion_friendnum, dht_public_key);
215
216 memcpy(friend_con->dht_temp_pk, dht_public_key, crypto_box_PUBLICKEYBYTES);
217}
218
219static int handle_status(void *object, int number, uint8_t status)
220{
221 Friend_Connections *fr_c = object;
222 Friend_Conn *friend_con = get_conn(fr_c, number);
223
224 if (!friend_con)
225 return -1;
226
227 if (status) { /* Went online. */
228 friend_con->status = FRIENDCONN_STATUS_CONNECTED;
229 friend_con->ping_lastrecv = unix_time();
230 onion_set_friend_online(fr_c->onion_c, friend_con->onion_friendnum, status);
231 } else { /* Went offline. */
232 friend_con->status = FRIENDCONN_STATUS_CONNECTING;
233 friend_con->crypt_connection_id = -1;
234 friend_con->dht_ping_lastrecv = unix_time();
235 }
236
237 unsigned int i;
238
239 for (i = 0; i < MAX_FRIEND_CONNECTION_CALLBACKS; ++i) {
240 if (friend_con->callbacks[i].status_callback)
241 friend_con->callbacks[i].status_callback(friend_con->callbacks[i].status_callback_object,
242 friend_con->callbacks[i].status_callback_id, status);
243 }
244
245 return 0;
246}
247
248static int handle_packet(void *object, int number, uint8_t *data, uint16_t length)
249{
250 if (length == 0)
251 return -1;
252
253 Friend_Connections *fr_c = object;
254 Friend_Conn *friend_con = get_conn(fr_c, number);
255
256 if (!friend_con)
257 return -1;
258
259 if (data[0] == PACKET_ID_ALIVE) {
260 friend_con->ping_lastrecv = unix_time();
261 return 0;
262 }
263
264 unsigned int i;
265
266 for (i = 0; i < MAX_FRIEND_CONNECTION_CALLBACKS; ++i) {
267 if (friend_con->callbacks[i].data_callback)
268 friend_con->callbacks[i].data_callback(friend_con->callbacks[i].data_callback_object,
269 friend_con->callbacks[i].data_callback_id, data, length);
270 }
271
272 return 0;
273}
274
275static int handle_lossy_packet(void *object, int number, const uint8_t *data, uint16_t length)
276{
277 if (length == 0)
278 return -1;
279
280 Friend_Connections *fr_c = object;
281 Friend_Conn *friend_con = get_conn(fr_c, number);
282
283 if (!friend_con)
284 return -1;
285
286 unsigned int i;
287
288 for (i = 0; i < MAX_FRIEND_CONNECTION_CALLBACKS; ++i) {
289 if (friend_con->callbacks[i].lossy_data_callback)
290 friend_con->callbacks[i].lossy_data_callback(friend_con->callbacks[i].lossy_data_callback_object,
291 friend_con->callbacks[i].lossy_data_callback_id, data, length);
292 }
293
294 return 0;
295}
296
297static int handle_new_connections(void *object, New_Connection *n_c)
298{
299 Friend_Connections *fr_c = object;
300 int friendcon_id = getfriend_conn_id_pk(fr_c, n_c->public_key);
301 Friend_Conn *friend_con = get_conn(fr_c, friendcon_id);
302
303 if (friend_con) {
304
305 if (friend_con->crypt_connection_id != -1)
306 return -1;
307
308 int id = accept_crypto_connection(fr_c->net_crypto, n_c);
309 connection_status_handler(fr_c->net_crypto, id, &handle_status, fr_c, friendcon_id);
310 connection_data_handler(fr_c->net_crypto, id, &handle_packet, fr_c, friendcon_id);
311 connection_lossy_data_handler(fr_c->net_crypto, id, &handle_lossy_packet, fr_c, friendcon_id);
312 friend_con->crypt_connection_id = id;
313
314 if (n_c->source.ip.family != AF_INET && n_c->source.ip.family != AF_INET6) {
315 set_direct_ip_port(fr_c->net_crypto, friend_con->crypt_connection_id, friend_con->dht_ip_port);
316 } else {
317 friend_con->dht_ip_port = n_c->source;
318 friend_con->dht_ip_port_lastrecv = unix_time();
319 }
320
321 dht_pk_callback(fr_c, friendcon_id, n_c->dht_public_key);
322
323 nc_dht_pk_callback(fr_c->net_crypto, id, &dht_pk_callback, fr_c, friendcon_id);
324 return 0;
325 }
326
327 return -1;
328}
329
330static int friend_new_connection(Friend_Connections *fr_c, int friendcon_id)
331{
332 Friend_Conn *friend_con = get_conn(fr_c, friendcon_id);
333
334 if (!friend_con)
335 return -1;
336
337 if (friend_con->crypt_connection_id != -1) {
338 return -1;
339 }
340
341 int id = new_crypto_connection(fr_c->net_crypto, friend_con->real_public_key);
342
343 if (id == -1)
344 return -1;
345
346 friend_con->crypt_connection_id = id;
347 connection_status_handler(fr_c->net_crypto, id, &handle_status, fr_c, friendcon_id);
348 connection_data_handler(fr_c->net_crypto, id, &handle_packet, fr_c, friendcon_id);
349 connection_lossy_data_handler(fr_c->net_crypto, id, &handle_lossy_packet, fr_c, friendcon_id);
350 nc_dht_pk_callback(fr_c->net_crypto, id, &dht_pk_callback, fr_c, friendcon_id);
351
352 return 0;
353}
354
355static int send_ping(const Friend_Connections *fr_c, int friendcon_id)
356{
357 Friend_Conn *friend_con = get_conn(fr_c, friendcon_id);
358
359 if (!friend_con)
360 return -1;
361
362 uint8_t ping = PACKET_ID_ALIVE;
363 int64_t ret = write_cryptpacket(fr_c->net_crypto, friend_con->crypt_connection_id, &ping, sizeof(ping), 0);
364
365 if (ret != -1) {
366 friend_con->ping_lastsent = unix_time();
367 return 0;
368 }
369
370 return -1;
371}
372
373/* Set the callbacks for the friend connection.
374 * index is the index (0 to (MAX_FRIEND_CONNECTION_CALLBACKS - 1)) we want the callback to set in the array.
375 *
376 * return 0 on success.
377 * return -1 on failure
378 */
379int friend_connection_callbacks(Friend_Connections *fr_c, int friendcon_id, unsigned int index,
380 int (*status_callback)(void *object, int id, uint8_t status), int (*data_callback)(void *object, int id, uint8_t *data,
381 uint16_t length), int (*lossy_data_callback)(void *object, int id, const uint8_t *data, uint16_t length), void *object,
382 int number)
383{
384 Friend_Conn *friend_con = get_conn(fr_c, friendcon_id);
385
386 if (!friend_con)
387 return -1;
388
389 if (index >= MAX_FRIEND_CONNECTION_CALLBACKS)
390 return -1;
391
392 friend_con->callbacks[index].status_callback = status_callback;
393 friend_con->callbacks[index].data_callback = data_callback;
394 friend_con->callbacks[index].lossy_data_callback = lossy_data_callback;
395
396 friend_con->callbacks[index].status_callback_object =
397 friend_con->callbacks[index].data_callback_object =
398 friend_con->callbacks[index].lossy_data_callback_object = object;
399
400 friend_con->callbacks[index].status_callback_id =
401 friend_con->callbacks[index].data_callback_id =
402 friend_con->callbacks[index].lossy_data_callback_id = number;
403 return 0;
404}
405
406/* return the crypt_connection_id for the connection.
407 *
408 * return crypt_connection_id on success.
409 * return -1 on failure.
410 */
411int friend_connection_crypt_connection_id(Friend_Connections *fr_c, int friendcon_id)
412{
413 Friend_Conn *friend_con = get_conn(fr_c, friendcon_id);
414
415 if (!friend_con)
416 return -1;
417
418 return friend_con->crypt_connection_id;
419}
420
421/* Create a new friend connection.
422 * If one to that real public key already exists, increase lock count and return it.
423 *
424 * return -1 on failure.
425 * return connection id on success.
426 */
427int new_friend_connection(Friend_Connections *fr_c, const uint8_t *real_public_key)
428{
429 int friendcon_id = getfriend_conn_id_pk(fr_c, real_public_key);
430
431 if (friendcon_id != -1) {
432 ++fr_c->conns[friendcon_id].lock_count;
433 return friendcon_id;
434 }
435
436 friendcon_id = create_friend_conn(fr_c);
437
438 if (friendcon_id == -1)
439 return -1;
440
441 int32_t onion_friendnum = onion_addfriend(fr_c->onion_c, real_public_key);
442
443 if (onion_friendnum == -1)
444 return -1;
445
446 Friend_Conn *friend_con = &fr_c->conns[friendcon_id];
447
448 friend_con->crypt_connection_id = -1;
449 friend_con->status = FRIENDCONN_STATUS_CONNECTING;
450 memcpy(friend_con->real_public_key, real_public_key, crypto_box_PUBLICKEYBYTES);
451 friend_con->onion_friendnum = onion_friendnum;
452
453 recv_tcp_relay_handler(fr_c->onion_c, onion_friendnum, &tcp_relay_node_callback, fr_c, friendcon_id);
454 onion_dht_pk_callback(fr_c->onion_c, onion_friendnum, &dht_pk_callback, fr_c, friendcon_id);
455
456 return friendcon_id;
457}
458
459/* Kill a friend connection.
460 *
461 * return -1 on failure.
462 * return 0 on success.
463 */
464int kill_friend_connection(Friend_Connections *fr_c, int friendcon_id)
465{
466 Friend_Conn *friend_con = get_conn(fr_c, friendcon_id);
467
468 if (!friend_con)
469 return -1;
470
471 if (friend_con->lock_count) {
472 --friend_con->lock_count;
473 return 0;
474 }
475
476 onion_delfriend(fr_c->onion_c, friend_con->onion_friendnum);
477 crypto_kill(fr_c->net_crypto, friend_con->crypt_connection_id);
478
479 if (friend_con->dht_lock) {
480 DHT_delfriend(fr_c->dht, friend_con->dht_temp_pk, friend_con->dht_lock);
481 }
482
483 return wipe_friend_conn(fr_c, friendcon_id);
484}
485
486
487/* Create new friend_connections instance. */
488Friend_Connections *new_friend_connections(Onion_Client *onion_c)
489{
490 if (!onion_c)
491 return NULL;
492
493 Friend_Connections *temp = calloc(1, sizeof(Friend_Connections));
494
495 if (temp == NULL)
496 return NULL;
497
498 temp->dht = onion_c->dht;
499 temp->net_crypto = onion_c->c;
500 temp->onion_c = onion_c;
501
502 new_connection_handler(temp->net_crypto, &handle_new_connections, temp);
503
504 return temp;
505}
506
507/* main friend_connections loop. */
508void do_friend_connections(Friend_Connections *fr_c)
509{
510 uint32_t i;
511 uint64_t temp_time = unix_time();
512
513 for (i = 0; i < fr_c->num_cons; ++i) {
514 Friend_Conn *friend_con = get_conn(fr_c, i);
515
516 if (friend_con) {
517 if (friend_con->status == FRIENDCONN_STATUS_CONNECTING) {
518 if (friend_con->dht_ping_lastrecv + FRIEND_DHT_TIMEOUT < temp_time) {
519 if (friend_con->dht_lock) {
520 DHT_delfriend(fr_c->dht, friend_con->dht_temp_pk, friend_con->dht_lock);
521 friend_con->dht_lock = 0;
522 }
523 }
524
525 if (friend_con->dht_ip_port_lastrecv + FRIEND_DHT_TIMEOUT < temp_time) {
526 friend_con->dht_ip_port.ip.family = 0;
527 }
528
529 if (friend_con->dht_lock) {
530 if (friend_new_connection(fr_c, i) == 0) {
531 set_connection_dht_public_key(fr_c->net_crypto, friend_con->crypt_connection_id, friend_con->dht_temp_pk);
532 set_direct_ip_port(fr_c->net_crypto, friend_con->crypt_connection_id, friend_con->dht_ip_port);
533 }
534 }
535
536 } else if (friend_con->status == FRIENDCONN_STATUS_CONNECTED) {
537 if (friend_con->ping_lastsent + FRIEND_PING_INTERVAL < temp_time) {
538 send_ping(fr_c, i);
539 }
540
541 if (friend_con->ping_lastrecv + FRIEND_CONNECTION_TIMEOUT < temp_time) {
542 /* If we stopped receiving ping packets, kill it. */
543 crypto_kill(fr_c->net_crypto, friend_con->crypt_connection_id);
544 friend_con->crypt_connection_id = -1;
545 handle_status(fr_c, i, 0); /* Going offline. */
546 }
547 }
548 }
549 }
550}
551
552/* Free everything related with friend_connections. */
553void kill_friend_connections(Friend_Connections *fr_c)
554{
555 if (!fr_c)
556 return;
557
558 uint32_t i;
559
560 for (i = 0; i < fr_c->num_cons; ++i) {
561 kill_friend_connection(fr_c, i);
562 }
563
564 free(fr_c);
565}
diff --git a/toxcore/friend_connection.h b/toxcore/friend_connection.h
new file mode 100644
index 00000000..62b82dc2
--- /dev/null
+++ b/toxcore/friend_connection.h
@@ -0,0 +1,140 @@
1/* friend_connection.h
2 *
3 * Connection to friends.
4 *
5 * Copyright (C) 2014 Tox project All Rights Reserved.
6 *
7 * This file is part of Tox.
8 *
9 * Tox is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * Tox is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with Tox. If not, see <http://www.gnu.org/licenses/>.
21 *
22 */
23
24
25#ifndef FRIEND_CONNECTION_H
26#define FRIEND_CONNECTION_H
27
28#include "net_crypto.h"
29#include "DHT.h"
30#include "LAN_discovery.h"
31#include "onion_client.h"
32
33
34#define MAX_FRIEND_CONNECTION_CALLBACKS 2
35#define MESSENGER_CALLBACK_INDEX 0
36#define GROUPCHAT_CALLBACK_INDEX 1
37
38#define PACKET_ID_ALIVE 16
39
40/* Interval between the sending of ping packets. */
41#define FRIEND_PING_INTERVAL 6
42
43/* If no packets are received from friend in this time interval, kill the connection. */
44#define FRIEND_CONNECTION_TIMEOUT (FRIEND_PING_INTERVAL * 3)
45
46/* Time before friend is removed from the DHT after last hearing about him. */
47#define FRIEND_DHT_TIMEOUT BAD_NODE_TIMEOUT
48
49
50enum {
51 FRIENDCONN_STATUS_NONE,
52 FRIENDCONN_STATUS_CONNECTING,
53 FRIENDCONN_STATUS_CONNECTED
54};
55
56typedef struct {
57 uint8_t status;
58
59 uint8_t real_public_key[crypto_box_PUBLICKEYBYTES];
60 uint8_t dht_temp_pk[crypto_box_PUBLICKEYBYTES];
61 uint16_t dht_lock;
62 IP_Port dht_ip_port;
63 uint64_t dht_ping_lastrecv, dht_ip_port_lastrecv;
64
65 int onion_friendnum;
66 int crypt_connection_id;
67
68 uint64_t ping_lastrecv, ping_lastsent;
69
70 struct {
71 int (*status_callback)(void *object, int id, uint8_t status);
72 void *status_callback_object;
73 int status_callback_id;
74
75 int (*data_callback)(void *object, int id, uint8_t *data, uint16_t length);
76 void *data_callback_object;
77 int data_callback_id;
78
79 int (*lossy_data_callback)(void *object, int id, const uint8_t *data, uint16_t length);
80 void *lossy_data_callback_object;
81 int lossy_data_callback_id;
82 } callbacks[MAX_FRIEND_CONNECTION_CALLBACKS];
83
84 uint16_t lock_count;
85} Friend_Conn;
86
87
88typedef struct {
89 Net_Crypto *net_crypto;
90 DHT *dht;
91 Onion_Client *onion_c;
92
93 Friend_Conn *conns;
94 uint32_t num_cons;
95
96} Friend_Connections;
97
98/* Set the callbacks for the friend connection.
99 * index is the index (0 to (MAX_FRIEND_CONNECTION_CALLBACKS - 1)) we want the callback to set in the array.
100 *
101 * return 0 on success.
102 * return -1 on failure
103 */
104int friend_connection_callbacks(Friend_Connections *fr_c, int friendcon_id, unsigned int index,
105 int (*status_callback)(void *object, int id, uint8_t status), int (*data_callback)(void *object, int id, uint8_t *data,
106 uint16_t length), int (*lossy_data_callback)(void *object, int id, const uint8_t *data, uint16_t length), void *object,
107 int number);
108
109/* return the crypt_connection_id for the connection.
110 *
111 * return crypt_connection_id on success.
112 * return -1 on failure.
113 */
114int friend_connection_crypt_connection_id(Friend_Connections *fr_c, int friendcon_id);
115
116/* Create a new friend connection.
117 * If one to that real public key already exists, increase lock count and return it.
118 *
119 * return -1 on failure.
120 * return connection id on success.
121 */
122int new_friend_connection(Friend_Connections *fr_c, const uint8_t *real_public_key);
123
124/* Kill a friend connection.
125 *
126 * return -1 on failure.
127 * return 0 on success.
128 */
129int kill_friend_connection(Friend_Connections *fr_c, int friendcon_id);
130
131/* Create new friend_connections instance. */
132Friend_Connections *new_friend_connections(Onion_Client *onion_c);
133
134/* main friend_connections loop. */
135void do_friend_connections(Friend_Connections *fr_c);
136
137/* Free everything related with friend_connections. */
138void kill_friend_connections(Friend_Connections *fr_c);
139
140#endif
diff --git a/toxcore/group.c b/toxcore/group.c
new file mode 100644
index 00000000..d5244f65
--- /dev/null
+++ b/toxcore/group.c
@@ -0,0 +1,781 @@
1/* group.c
2 *
3 * Slightly better groupchats implementation.
4 *
5 * Copyright (C) 2014 Tox project All Rights Reserved.
6 *
7 * This file is part of Tox.
8 *
9 * Tox is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * Tox is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with Tox. If not, see <http://www.gnu.org/licenses/>.
21 *
22 */
23
24#ifdef HAVE_CONFIG_H
25#include "config.h"
26#endif
27
28#include "group.h"
29#include "util.h"
30
31/* return 1 if the groupnumber is not valid.
32 * return 0 if the groupnumber is valid.
33 */
34static uint8_t groupnumber_not_valid(const Group_Chats *g_c, int groupnumber)
35{
36 if ((unsigned int)groupnumber >= g_c->num_chats)
37 return 1;
38
39 if (g_c->chats == NULL)
40 return 1;
41
42 if (g_c->chats[groupnumber].status == GROUPCHAT_STATUS_NONE)
43 return 1;
44
45 return 0;
46}
47
48
49/* Set the size of the groupchat list to num.
50 *
51 * return -1 if realloc fails.
52 * return 0 if it succeeds.
53 */
54static int realloc_groupchats(Group_Chats *g_c, uint32_t num)
55{
56 if (num == 0) {
57 free(g_c->chats);
58 g_c->chats = NULL;
59 return 0;
60 }
61
62 Group_c *newgroup_chats = realloc(g_c->chats, num * sizeof(Group_c));
63
64 if (newgroup_chats == NULL)
65 return -1;
66
67 g_c->chats = newgroup_chats;
68 return 0;
69}
70
71
72/* Create a new empty groupchat connection.
73 *
74 * return -1 on failure.
75 * return groupnumber on success.
76 */
77static int create_group_chat(Group_Chats *g_c)
78{
79 uint32_t i;
80
81 for (i = 0; i < g_c->num_chats; ++i) {
82 if (g_c->chats[i].status == GROUPCHAT_STATUS_NONE)
83 return i;
84 }
85
86 int id = -1;
87
88 if (realloc_groupchats(g_c, g_c->num_chats + 1) == 0) {
89 id = g_c->num_chats;
90 ++g_c->num_chats;
91 memset(&(g_c->chats[id]), 0, sizeof(Group_c));
92 }
93
94 return id;
95}
96
97
98/* Wipe a groupchat.
99 *
100 * return -1 on failure.
101 * return 0 on success.
102 */
103static int wipe_group_chat(Group_Chats *g_c, int groupnumber)
104{
105 if (groupnumber_not_valid(g_c, groupnumber))
106 return -1;
107
108 uint32_t i;
109 memset(&(g_c->chats[groupnumber]), 0 , sizeof(Group_c));
110
111 for (i = g_c->num_chats; i != 0; --i) {
112 if (g_c->chats[i - 1].status != GROUPCHAT_STATUS_NONE)
113 break;
114 }
115
116 if (g_c->num_chats != i) {
117 g_c->num_chats = i;
118 realloc_groupchats(g_c, g_c->num_chats);
119 }
120
121 return 0;
122}
123
124static Group_c *get_group_c(const Group_Chats *g_c, int groupnumber)
125{
126 if (groupnumber_not_valid(g_c, groupnumber))
127 return 0;
128
129 return &g_c->chats[groupnumber];
130}
131
132/*
133 * check if peer with client_id is in peer array.
134 *
135 * return peer index if peer is in chat.
136 * return -1 if peer is not in chat.
137 *
138 * TODO: make this more efficient.
139 */
140
141static int peer_in_chat(const Group_c *chat, const uint8_t *client_id)
142{
143 uint32_t i;
144
145 for (i = 0; i < chat->numpeers; ++i)
146 if (id_equal(chat->group[i].client_id, client_id))
147 return i;
148
149 return -1;
150}
151
152/*
153 * check if group with identifier is in group array.
154 *
155 * return group number if peer is in list.
156 * return -1 if group is not in list.
157 *
158 * TODO: make this more efficient and maybe use constant time comparisons?
159 */
160static int get_group_num(const Group_Chats *g_c, const uint8_t *identifier)
161{
162 uint32_t i;
163
164 for (i = 0; i < g_c->num_chats; ++i)
165 if (memcmp(g_c->chats[i].identifier, identifier, GROUP_IDENTIFIER_LENGTH) == 0)
166 return i;
167
168 return -1;
169}
170
171/*
172 * check if peer with peer_number is in peer array.
173 *
174 * return peer number if peer is in chat.
175 * return -1 if peer is not in chat.
176 *
177 * TODO: make this more efficient.
178 */
179int get_peer_index(Group_c *g, uint16_t peer_number)
180{
181 uint32_t i;
182
183 for (i = 0; i < g->numpeers; ++i)
184 if (g->group[i].peer_number == peer_number)
185 return i;
186
187 return -1;
188}
189
190/*
191 * Add a peer to the group chat.
192 *
193 * return peer_index if success or peer already in chat.
194 * return -1 if error.
195 */
196static int addpeer(Group_c *chat, const uint8_t *client_id, uint16_t peer_number)
197{
198 //TODO
199 //int peer_index = peer_in_chat(chat, client_id);
200
201 //if (peer_index != -1)
202 // return peer_index;
203
204 Group_Peer *temp;
205 temp = realloc(chat->group, sizeof(Group_Peer) * (chat->numpeers + 1));
206
207 if (temp == NULL)
208 return -1;
209
210 memset(&(temp[chat->numpeers]), 0, sizeof(Group_Peer));
211 chat->group = temp;
212
213 id_copy(chat->group[chat->numpeers].client_id, client_id);
214 chat->group[chat->numpeers].peer_number = peer_number;
215
216 chat->group[chat->numpeers].last_recv = unix_time();
217 chat->group[chat->numpeers].last_recv_msgping = unix_time();
218 ++chat->numpeers;
219
220 //if (chat->peer_namelistchange != NULL)
221 // (*chat->peer_namelistchange)(chat, chat->numpeers - 1, CHAT_CHANGE_PEER_ADD, chat->group_namelistchange_userdata);
222
223 return (chat->numpeers - 1);
224}
225
226static int handle_packet(void *object, int number, uint8_t *data, uint16_t length);
227
228/* Add friend to group chat.
229 *
230 * return 0 on success
231 * return -1 on failure.
232 */
233static int add_friend_to_groupchat(Group_Chats *g_c, int32_t friendnumber, int groupnumber, uint16_t other_groupnum)
234{
235 if (!m_friend_exists(g_c->m, friendnumber))
236 return -1;
237
238 Group_c *g = get_group_c(g_c, groupnumber);
239
240 if (!g)
241 return -1;
242
243 uint16_t i, ind = MAX_GROUP_CONNECTIONS;
244
245 for (i = 0; i < MAX_GROUP_CONNECTIONS; ++i) {
246 if (g->close[i].type == GROUPCHAT_CLOSE_NONE) {
247 ind = i;
248 continue;
249 }
250
251 if (g->close[i].type == GROUPCHAT_CLOSE_CONNECTION && g->close[i].number == (uint32_t)friendnumber) {
252 g->close[i].group_number = other_groupnum; /* update groupnum. */
253 return 0; /* Already in list. */
254 }
255
256 break;
257 }
258
259 if (ind == MAX_GROUP_CONNECTIONS)
260 return -1;
261
262 g->close[ind].type = GROUPCHAT_CLOSE_CONNECTION;
263 g->close[ind].number = friendnumber;
264 g->close[ind].group_number = other_groupnum;
265 int friendcon_id = g_c->m->friendlist[friendnumber].friendcon_id;
266 //TODO
267 friend_connection_callbacks(g_c->m->fr_c, friendcon_id, GROUPCHAT_CALLBACK_INDEX, 0, &handle_packet, 0, g_c->m,
268 friendnumber);
269
270 return 0;
271}
272
273/* Creates a new groupchat and puts it in the chats array.
274 *
275 * return group number on success.
276 * return -1 on failure.
277 */
278int add_groupchat(Group_Chats *g_c)
279{
280 int groupnumber = create_group_chat(g_c);
281
282 if (groupnumber == -1)
283 return -1;
284
285 Group_c *g = &g_c->chats[groupnumber];
286
287 g->status = GROUPCHAT_STATUS_VALID;
288 new_symmetric_key(g->identifier);
289 g->peer_number = 0; /* Founder is peer 0. */
290 return groupnumber;
291}
292
293/* Delete a groupchat from the chats array.
294 *
295 * return 0 on success.
296 * return -1 if failure.
297 */
298int del_groupchat(Group_Chats *g_c, int groupnumber)
299{
300 Group_c *g = get_group_c(g_c, groupnumber);
301
302 if (!g)
303 return -1;
304
305 free(g->group);
306 return wipe_group_chat(g_c, groupnumber);
307}
308
309/* Send a group message packet.
310 *
311 * return 1 on success
312 * return 0 on failure
313 */
314int send_group_message_packet(const Messenger *m, int32_t friendnumber, const uint8_t *data, uint16_t length)
315{
316 if (length >= MAX_CRYPTO_DATA_SIZE)
317 return 0;
318
319 uint8_t packet[1 + length];
320 packet[0] = PACKET_ID_MESSAGE_GROUPCHAT;
321 memcpy(packet + 1, data, length);
322 return write_cryptpacket(m->net_crypto, friend_connection_crypt_connection_id(m->fr_c,
323 m->friendlist[friendnumber].friendcon_id), packet, sizeof(packet), 0) != -1;
324}
325
326#define INVITE_PACKET_SIZE (1 + sizeof(uint16_t) + GROUP_IDENTIFIER_LENGTH)
327#define INVITE_ID 0
328
329#define INVITE_RESPONSE_PACKET_SIZE (1 + sizeof(uint16_t) * 2 + GROUP_IDENTIFIER_LENGTH)
330#define INVITE_RESPONSE_ID 1
331
332/* invite friendnumber to groupnumber
333 * return 0 on success
334 * return -1 on failure
335 */
336int invite_friend(Group_Chats *g_c, int32_t friendnumber, int groupnumber)
337{
338 Group_c *g = get_group_c(g_c, groupnumber);
339
340 if (!g)
341 return -1;
342
343 uint8_t invite[INVITE_PACKET_SIZE];
344 invite[0] = INVITE_ID;
345 uint16_t groupchat_num = htons((uint16_t)groupnumber);
346 memcpy(invite + 1, &groupchat_num, sizeof(groupchat_num));
347 memcpy(invite + 1 + sizeof(groupchat_num), g->identifier, GROUP_IDENTIFIER_LENGTH);
348
349 if (send_group_invite_packet(g_c->m, friendnumber, invite, sizeof(invite))) {
350 return 0;
351 } else {
352 wipe_group_chat(g_c, groupnumber);
353 return -1;
354 }
355}
356
357/* Join a group (you need to have been invited first.)
358 *
359 * returns group number on success
360 * returns -1 on failure.
361 */
362int join_groupchat(Group_Chats *g_c, int32_t friendnumber, const uint8_t *data, uint16_t length)
363{
364 if (length != sizeof(uint16_t) + GROUP_IDENTIFIER_LENGTH)
365 return -1;
366
367 int groupnumber = create_group_chat(g_c);
368
369 if (groupnumber == -1)
370 return -1;
371
372 Group_c *g = &g_c->chats[groupnumber];
373
374 uint16_t group_num = htons(groupnumber);
375 g->status = GROUPCHAT_STATUS_VALID;
376 uint8_t response[INVITE_RESPONSE_PACKET_SIZE];
377 response[0] = INVITE_RESPONSE_ID;
378 memcpy(response + 1, &group_num, sizeof(uint16_t));
379 memcpy(response + 1 + sizeof(uint16_t), data, sizeof(uint16_t) + GROUP_IDENTIFIER_LENGTH);
380
381 if (send_group_invite_packet(g_c->m, friendnumber, response, sizeof(response))) {
382 uint16_t other_groupnum;
383 memcpy(&other_groupnum, data, sizeof(other_groupnum));
384 other_groupnum = htons(other_groupnum);
385 memcpy(g->identifier, data + sizeof(uint16_t), GROUP_IDENTIFIER_LENGTH);
386 add_friend_to_groupchat(g_c, friendnumber, groupnumber, other_groupnum);
387 g->peer_number = rand(); /* TODO */
388 return groupnumber;
389 } else {
390 return -1;
391 }
392}
393
394/* Set the callback for group invites.
395 *
396 * Function(Group_Chats *g_c, int32_t friendnumber, uint8_t *data, uint16_t length, void *userdata)
397 *
398 * data of length is what needs to be passed to join_groupchat().
399 */
400void g_callback_group_invite(Group_Chats *g_c, void (*function)(Messenger *m, int32_t, const uint8_t *, uint16_t,
401 void *), void *userdata)
402{
403 g_c->invite_callback = function;
404 g_c->invite_callback_userdata = userdata;
405}
406
407/* Set the callback for group messages.
408 *
409 * Function(Group_Chats *g_c, int groupnumber, int friendgroupnumber, uint8_t * message, uint16_t length, void *userdata)
410 */
411void g_callback_group_message(Group_Chats *g_c, void (*function)(Messenger *m, int, int, const uint8_t *, uint16_t,
412 void *), void *userdata)
413{
414 g_c->message_callback = function;
415 g_c->message_callback_userdata = userdata;
416}
417
418static void handle_friend_invite_packet(Messenger *m, int32_t friendnumber, const uint8_t *data, uint16_t length)
419{
420 Group_Chats *g_c = m->group_chat_object;
421
422 if (length <= 1)
423 return;
424
425 const uint8_t *invite_data = data + 1;
426 uint16_t invite_length = length - 1;
427
428 switch (data[0]) {
429 case INVITE_ID: {
430 if (length != INVITE_PACKET_SIZE)
431 return;
432
433 int groupnumber = get_group_num(g_c, data + 1 + sizeof(uint16_t));
434
435 if (groupnumber == -1) {
436 if (g_c->invite_callback)
437 g_c->invite_callback(m, friendnumber, invite_data, invite_length, g_c->invite_callback_userdata);
438
439 return;
440 } else {
441 //TODO
442 uint16_t other_groupnum;
443 memcpy(&other_groupnum, data + 1, sizeof(uint16_t));
444 other_groupnum = ntohs(other_groupnum);
445 add_friend_to_groupchat(g_c, friendnumber, groupnumber, other_groupnum);
446 }
447
448 break;
449 }
450
451 case INVITE_RESPONSE_ID: {
452 if (length != INVITE_RESPONSE_PACKET_SIZE)
453 return;
454
455 uint16_t other_groupnum, groupnum;
456 memcpy(&groupnum, data + 1 + sizeof(uint16_t), sizeof(uint16_t));
457 groupnum = ntohs(groupnum);
458
459 Group_c *g = get_group_c(g_c, groupnum);
460
461 if (!g)
462 return;
463
464 if (memcmp(data + 1 + sizeof(uint16_t) * 2, g->identifier, GROUP_IDENTIFIER_LENGTH) != 0)
465 return;
466
467 memcpy(&other_groupnum, data + 1, sizeof(uint16_t));
468 other_groupnum = ntohs(other_groupnum);
469
470 add_friend_to_groupchat(g_c, friendnumber, groupnum, other_groupnum);
471
472 break;
473 }
474
475 default:
476 return;
477 }
478}
479
480/* Find index of friend in the close list;
481 *
482 * returns index on success
483 * returns -1 on failure.
484 */
485static int friend_in_close(Group_c *g, int32_t friendnumber)
486{
487 int i;
488
489 for (i = 0; i < MAX_GROUP_CONNECTIONS; ++i) {
490 if (g->close[i].type != GROUPCHAT_CLOSE_CONNECTION)
491 continue;
492
493 if (g->close[i].number != (uint32_t)friendnumber)
494 continue;
495
496 return i;
497 }
498
499 return -1;
500}
501
502#define MIN_MESSAGE_PACKET_LEN (sizeof(uint16_t) * 2 + sizeof(uint32_t) + 1)
503
504/* Send message to all close except receiver (if receiver isn't -1)
505 * NOTE: this function appends the group chat number to the data passed to it.
506 *
507 * return number of messages sent.
508 */
509static unsigned int send_message_all_close(const Group_Chats *g_c, int groupnumber, const uint8_t *data,
510 uint16_t length, int receiver)
511{
512
513 Group_c *g = get_group_c(g_c, groupnumber);
514
515 if (!g)
516 return 0;
517
518 uint16_t i, sent = 0;
519
520 for (i = 0; i < MAX_GROUP_CONNECTIONS; ++i) {
521 if (g->close[i].type == GROUPCHAT_CLOSE_NONE)
522 continue;
523
524 if ((int)i == receiver)
525 continue;
526
527 uint16_t other_groupnum = htons(g->close[i].group_number);
528 uint8_t packet[sizeof(uint16_t) + length];
529 memcpy(packet, &other_groupnum, sizeof(uint16_t));
530 memcpy(packet + sizeof(uint16_t), data, length);
531
532 if (send_group_message_packet(g_c->m, g->close[i].number, packet, sizeof(packet)))
533 ++sent;
534 }
535
536 return sent;
537}
538
539#define MAX_GROUP_MESSAGE_DATA_LEN (MAX_CRYPTO_DATA_SIZE - (1 + MIN_MESSAGE_PACKET_LEN))
540
541/* Send data of len with message_id to groupnumber.
542 *
543 * return number of peers it was sent to on success.
544 * return 0 on failure.
545 */
546static unsigned int send_message_group(const Group_Chats *g_c, int groupnumber, uint8_t message_id, const uint8_t *data,
547 uint16_t len)
548{
549 if (len > MAX_GROUP_MESSAGE_DATA_LEN)
550 return 0;
551
552 Group_c *g = get_group_c(g_c, groupnumber);
553
554 if (!g)
555 return 0;
556
557 uint8_t packet[sizeof(uint16_t) + sizeof(uint32_t) + 1 + len];
558 uint16_t peer_num = htons(g->peer_number);
559 memcpy(packet, &peer_num, sizeof(peer_num));
560
561 ++g->message_number;
562
563 if (!g->message_number)
564 ++g->message_number;
565
566 uint32_t message_num = htonl(g->message_number);
567 memcpy(packet + sizeof(uint16_t), &message_num, sizeof(message_num));
568
569 packet[sizeof(uint16_t) + sizeof(uint32_t)] = message_id;
570
571 if (len)
572 memcpy(packet + sizeof(uint16_t) + sizeof(uint32_t) + 1, data, len);
573
574 return send_message_all_close(g_c, groupnumber, packet, sizeof(packet), -1);
575}
576
577/* send a group message
578 * return 0 on success
579 * return -1 on failure
580 */
581int group_message_send(const Group_Chats *g_c, int groupnumber, const uint8_t *message, uint16_t length)
582{
583 if (send_message_group(g_c, groupnumber, PACKET_ID_MESSAGE, message, length)) {
584 return 0;
585 } else {
586 return -1;
587 }
588}
589
590static void handle_message_packet_group(Group_Chats *g_c, int groupnumber, const uint8_t *data, uint16_t length,
591 int close_index)
592{
593 if (length < MIN_MESSAGE_PACKET_LEN)
594 return;
595
596 Group_c *g = get_group_c(g_c, groupnumber);
597
598 if (!g)
599 return;
600
601 uint16_t peer_number;
602 memcpy(&peer_number, data + sizeof(uint16_t), sizeof(uint16_t));
603 peer_number = ntohs(peer_number);
604
605 int index = get_peer_index(g, peer_number);
606
607 //TODO remove
608 if (index == -1) {
609 uint8_t empty_key[crypto_box_PUBLICKEYBYTES];
610 index = addpeer(g, empty_key, peer_number);
611 }
612
613 if (index == -1)
614 return;
615
616 uint32_t message_number;
617 memcpy(&message_number, data + sizeof(uint16_t) * 2, sizeof(message_number));
618 message_number = ntohl(message_number);
619
620 if (g->group[index].last_message_number == 0) {
621 g->group[index].last_message_number = message_number;
622 } else if (message_number - g->group[index].last_message_number > 64 ||
623 message_number == g->group[index].last_message_number) {
624 return;
625 }
626
627 g->group[index].last_message_number = message_number;
628
629 uint8_t message_id = data[sizeof(uint16_t) * 2 + sizeof(message_number)];
630 const uint8_t *msg_data = data + sizeof(uint16_t) * 2 + sizeof(message_number) + 1;
631 uint16_t msg_data_len = length - (sizeof(uint16_t) * 2 + sizeof(message_number) + 1);
632
633 switch (message_id) {
634 case PACKET_ID_MESSAGE: {
635 if (msg_data_len == 0)
636 return;
637
638 //TODO
639 if (g_c->message_callback)
640 g_c->message_callback(g_c->m, groupnumber, index, msg_data, msg_data_len, g_c->message_callback_userdata);
641
642 break;
643 }
644
645 default:
646 return;
647 }
648
649 send_message_all_close(g_c, groupnumber, data + sizeof(uint16_t), length - sizeof(uint16_t), close_index);
650}
651
652static void handle_friend_message_packet(Messenger *m, int32_t friendnumber, const uint8_t *data, uint16_t length)
653{
654 Group_Chats *g_c = m->group_chat_object;
655
656 if (length < MIN_MESSAGE_PACKET_LEN)
657 return;
658
659 uint16_t groupnumber;
660 memcpy(&groupnumber, data, sizeof(uint16_t));
661 groupnumber = ntohs(groupnumber);
662 Group_c *g = get_group_c(g_c, groupnumber);
663
664 if (!g)
665 return;
666
667 int index = friend_in_close(g, friendnumber);
668
669 if (index == -1)
670 return;
671
672 handle_message_packet_group(g_c, groupnumber, data, length, index);
673}
674
675static int handle_packet(void *object, int number, uint8_t *data, uint16_t length)
676{
677 if (length <= 1)
678 return -1;
679
680 switch (data[0]) {
681 case PACKET_ID_INVITE_GROUPCHAT: {
682 handle_friend_invite_packet(object, number, data + 1, length - 1);
683 break;
684 }
685
686 case PACKET_ID_MESSAGE_GROUPCHAT: {
687 handle_friend_message_packet(object, number, data + 1, length - 1);
688 break;
689 }
690
691 default: {
692 return 0;
693 }
694 }
695
696 return 0;
697}
698
699
700/* Create new groupchat instance. */
701Group_Chats *new_groupchats(Messenger *m)
702{
703 if (!m)
704 return NULL;
705
706 Group_Chats *temp = calloc(1, sizeof(Group_Chats));
707
708 if (temp == NULL)
709 return NULL;
710
711 temp->m = m;
712 m->group_chat_object = temp;
713 m_callback_group_invite(m, &handle_friend_invite_packet);
714
715 return temp;
716}
717
718/* main groupchats loop. */
719void do_groupchats(Group_Chats *g_c)
720{
721 //TODO
722}
723
724/* Free everything related with group chats. */
725void kill_groupchats(Group_Chats *g_c)
726{
727 //TODO
728 g_c->m->group_chat_object = 0;
729 free(g_c);
730}
731
732/* Return the number of chats in the instance m.
733 * You should use this to determine how much memory to allocate
734 * for copy_chatlist. */
735/*
736uint32_t count_chatlist(const Messenger *m)
737{
738 uint32_t ret = 0;
739 uint32_t i;
740
741 for (i = 0; i < m->numchats; i++) {
742 if (m->chats[i]) {
743 ret++;
744 }
745 }
746
747 return ret;
748}*/
749
750/* Copy a list of valid chat IDs into the array out_list.
751 * If out_list is NULL, returns 0.
752 * Otherwise, returns the number of elements copied.
753 * If the array was too small, the contents
754 * of out_list will be truncated to list_size. */
755/*
756uint32_t copy_chatlist(const Messenger *m, int *out_list, uint32_t list_size)
757{
758 if (!out_list)
759 return 0;
760
761 if (m->numchats == 0) {
762 return 0;
763 }
764
765 uint32_t i;
766 uint32_t ret = 0;
767
768 for (i = 0; i < m->numchats; i++) {
769 if (ret >= list_size) {
770 break; *//* Abandon ship *//*
771 }
772
773 if (m->chats[i]) {
774 out_list[ret] = i;
775 ret++;
776 }
777 }
778
779 return ret;
780}
781*/ \ No newline at end of file
diff --git a/toxcore/group.h b/toxcore/group.h
new file mode 100644
index 00000000..a5b5723c
--- /dev/null
+++ b/toxcore/group.h
@@ -0,0 +1,197 @@
1/* group.h
2 *
3 * Slightly better groupchats implementation.
4 *
5 * Copyright (C) 2014 Tox project All Rights Reserved.
6 *
7 * This file is part of Tox.
8 *
9 * Tox is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * Tox is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with Tox. If not, see <http://www.gnu.org/licenses/>.
21 *
22 */
23
24
25#ifndef GROUP_H
26#define GROUP_H
27
28#include "Messenger.h"
29
30enum {
31 GROUPCHAT_STATUS_NONE,
32 GROUPCHAT_STATUS_VALID
33};
34
35typedef struct {
36 uint8_t client_id[crypto_box_PUBLICKEYBYTES];
37 uint64_t pingid;
38 uint64_t last_pinged;
39
40 uint64_t last_recv;
41 uint64_t last_recv_msgping;
42 uint32_t last_message_number;
43
44 uint8_t nick[MAX_NAME_LENGTH];
45 uint16_t nick_len;
46
47 uint8_t deleted;
48 uint64_t deleted_time;
49
50 uint16_t peer_number;
51} Group_Peer;
52
53#define DESIRED_CLOSE_CONNECTIONS 3
54#define MAX_GROUP_CONNECTIONS 16
55#define GROUP_IDENTIFIER_LENGTH crypto_box_KEYBYTES /* So we can use new_symmetric_key(...) to fill it */
56
57enum {
58 GROUPCHAT_CLOSE_NONE,
59 GROUPCHAT_CLOSE_CONNECTION
60};
61
62typedef struct {
63 uint8_t status;
64
65 Group_Peer *group;
66 uint32_t numpeers;
67
68 struct {
69 uint8_t type; /* GROUPCHAT_CLOSE_* */
70 uint32_t number;
71 uint16_t group_number;
72 } close[MAX_GROUP_CONNECTIONS];
73
74 uint8_t identifier[GROUP_IDENTIFIER_LENGTH];
75
76 uint32_t message_number;
77 uint16_t peer_number;
78} Group_c;
79
80typedef struct {
81 Messenger *m;
82
83 Group_c *chats;
84 uint32_t num_chats;
85
86 void (*invite_callback)(Messenger *m, int32_t, const uint8_t *, uint16_t, void *);
87 void *invite_callback_userdata;
88 void (*message_callback)(Messenger *m, int, int, const uint8_t *, uint16_t, void *);
89 void *message_callback_userdata;
90} Group_Chats;
91
92/* Set the callback for group invites.
93 *
94 * Function(Group_Chats *g_c, int32_t friendnumber, uint8_t *data, uint16_t length, void *userdata)
95 *
96 * data of length is what needs to be passed to join_groupchat().
97 */
98void g_callback_group_invite(Group_Chats *g_c, void (*function)(Messenger *m, int32_t, const uint8_t *, uint16_t,
99 void *), void *userdata);
100
101/* Set the callback for group messages.
102 *
103 * Function(Group_Chats *g_c, int groupnumber, int friendgroupnumber, uint8_t * message, uint16_t length, void *userdata)
104 */
105void g_callback_group_message(Group_Chats *g_c, void (*function)(Messenger *m, int, int, const uint8_t *, uint16_t,
106 void *), void *userdata);
107
108/* Set the callback for group actions.
109 *
110 * Function(Group_Chats *g_c, int groupnumber, int friendgroupnumber, uint8_t * message, uint16_t length, void *userdata)
111 */
112void g_callback_group_action(Group_Chats *g_c, void (*function)(Messenger *m, int, int, const uint8_t *, uint16_t,
113 void *), void *userdata);
114
115/* Set callback function for peer name list changes.
116 *
117 * It gets called every time the name list changes(new peer/name, deleted peer)
118 * Function(Group_Chats *g_c, int groupnumber, void *userdata)
119 */
120void g_callback_group_namelistchange(Group_Chats *g_c, void (*function)(Messenger *m, int, int, uint8_t, void *),
121 void *userdata);
122
123/* Creates a new groupchat and puts it in the chats array.
124 *
125 * return group number on success.
126 * return -1 on failure.
127 */
128int add_groupchat(Group_Chats *g_c);
129
130/* Delete a groupchat from the chats array.
131 *
132 * return 0 on success.
133 * return -1 if failure.
134 */
135int del_groupchat(Group_Chats *g_c, int groupnumber);
136
137/* Copy the name of peernumber who is in groupnumber to name.
138 * name must be at least MAX_NAME_LENGTH long.
139 *
140 * return length of name if success
141 * return -1 if failure
142 */
143int group_peername(const Group_Chats *g_c, int groupnumber, int peernumber, uint8_t *name);
144
145/* invite friendnumber to groupnumber
146 * return 0 on success
147 * return -1 on failure
148 */
149int invite_friend(Group_Chats *g_c, int32_t friendnumber, int groupnumber);
150
151/* Join a group (you need to have been invited first.)
152 *
153 * returns group number on success
154 * returns -1 on failure.
155 */
156int join_groupchat(Group_Chats *g_c, int32_t friendnumber, const uint8_t *data, uint16_t length);
157
158/* send a group message
159 * return 0 on success
160 * return -1 on failure
161 */
162int group_message_send(const Group_Chats *g_c, int groupnumber, const uint8_t *message, uint16_t length);
163
164/* send a group action
165 * return 0 on success
166 * return -1 on failure
167 */
168int group_action_send(const Group_Chats *g_c, int groupnumber, const uint8_t *action, uint16_t length);
169
170/* Return the number of peers in the group chat on success.
171 * return -1 on failure
172 */
173int group_number_peers(const Group_Chats *g_c, int groupnumber);
174
175/* List all the peers in the group chat.
176 *
177 * Copies the names of the peers to the name[length][MAX_NAME_LENGTH] array.
178 *
179 * Copies the lengths of the names to lengths[length]
180 *
181 * returns the number of peers on success.
182 *
183 * return -1 on failure.
184 */
185int group_names(const Group_Chats *g_c, int groupnumber, uint8_t names[][MAX_NAME_LENGTH], uint16_t lengths[],
186 uint16_t length);
187
188/* Create new groupchat instance. */
189Group_Chats *new_groupchats(Messenger *m);
190
191/* main groupchats loop. */
192void do_groupchats(Group_Chats *g_c);
193
194/* Free everything related with group chats. */
195void kill_groupchats(Group_Chats *g_c);
196
197#endif
diff --git a/toxcore/group_chats.c b/toxcore/group_chats.c
deleted file mode 100644
index 949ec53a..00000000
--- a/toxcore/group_chats.c
+++ /dev/null
@@ -1,837 +0,0 @@
1/* group_chats.c
2 *
3 * An implementation of massive text only group chats.
4 *
5 *
6 * Copyright (C) 2013 Tox project All Rights Reserved.
7 *
8 * This file is part of Tox.
9 *
10 * Tox is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, either version 3 of the License, or
13 * (at your option) any later version.
14 *
15 * Tox is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with Tox. If not, see <http://www.gnu.org/licenses/>.
22 *
23 */
24
25#ifdef HAVE_CONFIG_H
26#include "config.h"
27#endif
28
29#include "DHT.h"
30#include "assoc.h"
31#include "group_chats.h"
32#include "LAN_discovery.h"
33#include "util.h"
34
35#define GROUPCHAT_MAXDATA_LENGTH (MAX_CRYPTO_REQUEST_SIZE - (1 + crypto_box_PUBLICKEYBYTES * 2 + crypto_box_NONCEBYTES))
36#define GROUPCHAT_MAXPLAINDATA_LENGTH (GROUPCHAT_MAXDATA_LENGTH - crypto_box_MACBYTES)
37
38#define GROUP_MAX_SENDNODES (GROUP_CLOSE_CONNECTIONS * 2)
39
40typedef struct {
41 uint64_t pingid;
42 //uint8_t client_id[crypto_box_PUBLICKEYBYTES];
43
44} getnodes_data;
45
46typedef struct {
47 uint8_t client_id[crypto_box_PUBLICKEYBYTES];
48 IP_Port ip_port;
49
50} groupchat_nodes;
51
52typedef struct {
53 uint64_t pingid;
54 groupchat_nodes nodes[GROUP_CLOSE_CONNECTIONS];
55 //uint8_t client_id[crypto_box_PUBLICKEYBYTES];
56
57} sendnodes_data;
58
59/*
60 * check if peer with client_id is in peer array.
61 *
62 * return peer number if peer is in chat.
63 * return -1 if peer is not in chat.
64 *
65 * TODO: make this more efficient.
66 */
67
68static int peer_in_chat(const Group_Chat *chat, const uint8_t *client_id)
69{
70 uint32_t i;
71
72 for (i = 0; i < chat->numpeers; ++i)
73 if (id_equal(chat->group[i].client_id, client_id))
74 return i;
75
76 return -1;
77}
78
79/* Compares client_id1 and client_id2 with client_id.
80 *
81 * return 0 if both are same distance.
82 * return 1 if client_id1 is closer.
83 * return 2 if client_id2 is closer.
84 */
85static int id_closest_groupchats(const uint8_t *id, const uint8_t *id1, const uint8_t *id2)
86{
87 size_t i;
88 uint8_t distance1, distance2;
89
90 for (i = 0; i < CLIENT_ID_SIZE; ++i) {
91
92 distance1 = abs(((int8_t *)id)[i] - ((int8_t *)id1)[i]);
93 distance2 = abs(((int8_t *)id)[i] - ((int8_t *)id2)[i]);
94
95 if (distance1 < distance2)
96 return 1;
97
98 if (distance1 > distance2)
99 return 2;
100 }
101
102 return 0;
103}
104
105#define BAD_GROUPNODE_TIMEOUT 30
106
107/*
108 * Check if peer is closer to us that the other peers in the list and if the peer is in the list.
109 * Return the number of peers it is closer to if it is not in the closelist.
110 * Return -1 if the peer is in the closelist.
111 */
112
113static int peer_okping(const Group_Chat *chat, const uint8_t *client_id)
114{
115 uint32_t i, j = 0;
116
117 if (id_equal(chat->self_public_key, client_id))
118 return -1;
119
120 for (i = 0; i < GROUP_CLOSE_CONNECTIONS; ++i) {
121 if (is_timeout(chat->close[i].last_recv, BAD_GROUPNODE_TIMEOUT)) {
122 ++j;
123 continue;
124 }
125
126 /* Equal */
127 if (id_equal(chat->close[i].client_id, client_id))
128 return -1;
129
130 if (id_closest_groupchats(chat->self_public_key, chat->close[i].client_id, client_id) == 2)
131 ++j;
132 }
133
134 return j;
135}
136
137
138
139/* Attempt to add a peer to the close list.
140 * Update last_recv if it is in list.
141 * Attempt to add it to list if it is not.
142 *
143 * Return 0 if success.
144 * Return -1 if peer was not put in list/updated.
145 */
146static int add_closepeer(Group_Chat *chat, const uint8_t *client_id, IP_Port ip_port)
147{
148 uint32_t i;
149
150 for (i = 0; i < GROUP_CLOSE_CONNECTIONS; ++i) { /* Check if node is already in list, if it is update its last_recv */
151 if (id_equal(chat->close[i].client_id, client_id)) {
152 chat->close[i].last_recv = unix_time();
153 return 0;
154 }
155 }
156
157 for (i = 0; i < GROUP_CLOSE_CONNECTIONS; ++i) { /* Try replacing bad nodes first */
158 if (is_timeout(chat->close[i].last_recv, BAD_GROUPNODE_TIMEOUT)) {
159 id_copy(chat->close[i].client_id, client_id);
160 chat->close[i].ip_port = ip_port;
161 chat->close[i].last_recv = unix_time();
162 return 0;
163 }
164 }
165
166 for (i = 0; i < GROUP_CLOSE_CONNECTIONS; ++i) { /* Replace nodes if given one is closer. */
167 if (id_closest_groupchats(chat->self_public_key, chat->close[i].client_id, client_id) == 2) {
168 id_copy(chat->close[i].client_id, client_id);
169 chat->close[i].ip_port = ip_port;
170 chat->close[i].last_recv = unix_time();
171 return 0;
172 }
173 }
174
175 return -1;
176}
177
178static int send_groupchatpacket(const Group_Chat *chat, IP_Port ip_port, const uint8_t *public_key, const uint8_t *data,
179 uint32_t length, uint8_t request_id)
180{
181 if (id_equal(chat->self_public_key, public_key))
182 return -1;
183
184 uint8_t packet[MAX_CRYPTO_REQUEST_SIZE];
185 int len = create_request(chat->self_public_key, chat->self_secret_key, packet, public_key, data, length, request_id);
186 packet[0] = NET_PACKET_GROUP_CHATS;
187
188 if (len == -1)
189 return -1;
190
191 if (sendpacket(chat->net, ip_port, packet, len) == len)
192 return 0;
193
194 return -1;
195
196}
197
198/*
199 * Send data to all peers in close peer list.
200 *
201 * return the number of peers the packet was sent to.
202 */
203static uint8_t sendto_allpeers(const Group_Chat *chat, const uint8_t *data, uint16_t length, uint8_t request_id)
204{
205 uint16_t sent = 0;
206 uint32_t i;
207
208 for (i = 0; i < GROUP_CLOSE_CONNECTIONS; ++i) {
209 if (ip_isset(&chat->close[i].ip_port.ip) &&
210 !is_timeout(chat->close[i].last_recv, BAD_GROUPNODE_TIMEOUT)) {
211 if (send_groupchatpacket(chat, chat->close[i].ip_port, chat->close[i].client_id,
212 data, length, request_id) == 0)
213 ++sent;
214 }
215 }
216
217 return sent;
218}
219
220
221/*
222 * Add a peer to the group chat.
223 *
224 * return peernum if success or peer already in chat.
225 * return -1 if error.
226 */
227static int addpeer(Group_Chat *chat, const uint8_t *client_id)
228{
229 int peernum = peer_in_chat(chat, client_id);
230
231 if (peernum != -1)
232 return peernum;
233
234 Group_Peer *temp;
235 temp = realloc(chat->group, sizeof(Group_Peer) * (chat->numpeers + 1));
236
237 if (temp == NULL)
238 return -1;
239
240 memset(&(temp[chat->numpeers]), 0, sizeof(Group_Peer));
241 chat->group = temp;
242
243 id_copy(chat->group[chat->numpeers].client_id, client_id);
244 chat->group[chat->numpeers].last_recv = unix_time();
245 chat->group[chat->numpeers].last_recv_msgping = unix_time();
246 ++chat->numpeers;
247
248 if (chat->peer_namelistchange != NULL)
249 (*chat->peer_namelistchange)(chat, chat->numpeers - 1, CHAT_CHANGE_PEER_ADD, chat->group_namelistchange_userdata);
250
251 return (chat->numpeers - 1);
252}
253
254/*
255 * Set a peer from the group chat to deleted.
256 *
257 * return 0 if success
258 * return -1 if error.
259 */
260static int del_peer_set(Group_Chat *chat, int peernum)
261{
262 if ((uint32_t)peernum >= chat->numpeers)
263 return -1;
264
265 chat->group[peernum].deleted = 1;
266 chat->group[peernum].deleted_time = unix_time();
267 return 0;
268}
269
270/*
271 * Delete a peer from the group chat.
272 *
273 * return 0 if success
274 * return -1 if error.
275 */
276static int delpeer(Group_Chat *chat, int peernum)
277{
278 if ((uint32_t)peernum >= chat->numpeers)
279 return -1;
280
281 uint32_t i;
282
283 for (i = 0; i < GROUP_CLOSE_CONNECTIONS; ++i) { /* If peer is in close list, time it out forcefully. */
284 if (id_equal(chat->close[i].client_id, chat->group[peernum].client_id)) {
285 chat->close[i].last_recv = 0;
286 break;
287 }
288 }
289
290 Group_Peer *temp;
291 --chat->numpeers;
292
293 if (chat->numpeers == 0) {
294 free(chat->group);
295 chat->group = NULL;
296 return 0;
297 }
298
299 if (chat->numpeers != (uint32_t)peernum)
300 memcpy(&chat->group[peernum], &chat->group[chat->numpeers], sizeof(Group_Peer));
301
302 temp = realloc(chat->group, sizeof(Group_Peer) * (chat->numpeers));
303
304 if (temp == NULL)
305 return -1;
306
307 chat->group = temp;
308
309 if (chat->peer_namelistchange != NULL) {
310 (*chat->peer_namelistchange)(chat, peernum, CHAT_CHANGE_PEER_DEL, chat->group_namelistchange_userdata);
311 }
312
313 return 0;
314}
315
316/* Copy the name of peernum to name.
317 * name must be at least MAX_NICK_BYTES long.
318 *
319 * return length of name if success
320 * return -1 if failure
321 */
322int group_peername(const Group_Chat *chat, int peernum, uint8_t *name)
323{
324 if ((uint32_t)peernum >= chat->numpeers)
325 return -1;
326
327 if (chat->group[peernum].nick_len == 0) {
328 /* memcpy(name, "NSA agent", 10); */ /* Srsly? */ /* Kindly remind the user that someone with no name might be a moronic NSA agent.*/
329 name[0] = 0;
330 return 0;
331 }
332
333 memcpy(name, chat->group[peernum].nick, chat->group[peernum].nick_len);
334 return chat->group[peernum].nick_len;
335}
336
337static void setnick(Group_Chat *chat, int peernum, const uint8_t *contents, uint16_t contents_len)
338{
339 if (contents_len > MAX_NICK_BYTES || contents_len == 0)
340 return;
341
342 /* same name as already stored? */
343 if (chat->group[peernum].nick_len == contents_len)
344 if (!memcmp(chat->group[peernum].nick, contents, contents_len))
345 return;
346
347 memcpy(chat->group[peernum].nick, contents, contents_len);
348 chat->group[peernum].nick_len = contents_len;
349
350 if (chat->peer_namelistchange != NULL)
351 (*chat->peer_namelistchange)(chat, peernum, CHAT_CHANGE_PEER_NAME, chat->group_namelistchange_userdata);
352}
353
354/* min time between pings sent to one peer in seconds */
355/* TODO: move this to global section */
356#define GROUP_PING_TIMEOUT 5
357
358static int send_getnodes(const Group_Chat *chat, IP_Port ip_port, int peernum)
359{
360 if ((uint32_t)peernum >= chat->numpeers)
361 return -1;
362
363 if (!is_timeout(chat->group[peernum].last_pinged, GROUP_PING_TIMEOUT))
364 return -1;
365
366 getnodes_data contents;
367 contents.pingid = random_64b();
368
369 chat->group[peernum].last_pinged = unix_time();
370 chat->group[peernum].pingid = contents.pingid;
371 chat->group[peernum].ping_via = ip_port;
372
373 if (chat->assoc) {
374 IPPTs ippts;
375 ippts.timestamp = unix_time();
376 ippts.ip_port = ip_port;
377
378 Assoc_add_entry(chat->assoc, chat->group[peernum].client_id, &ippts, NULL, 1);
379 }
380
381 return send_groupchatpacket(chat, ip_port, chat->group[peernum].client_id, (uint8_t *)&contents, sizeof(contents),
382 CRYPTO_PACKET_GROUP_CHAT_GET_NODES);
383}
384
385static int send_sendnodes(const Group_Chat *chat, IP_Port ip_port, int peernum, uint64_t pingid)
386{
387 if ((uint32_t)peernum >= chat->numpeers)
388 return -1;
389
390 sendnodes_data contents;
391 contents.pingid = pingid;
392 uint32_t i, j = 0;
393
394 for (i = 0; i < GROUP_CLOSE_CONNECTIONS; ++i) {
395 if (!is_timeout(chat->close[i].last_recv, BAD_GROUPNODE_TIMEOUT)) {
396 id_copy(contents.nodes[j].client_id, chat->close[i].client_id);
397 contents.nodes[j].ip_port = chat->close[i].ip_port;
398 to_net_family(&contents.nodes[j].ip_port.ip);
399 ++j;
400 }
401 }
402
403 return send_groupchatpacket(chat, ip_port, chat->group[peernum].client_id, (uint8_t *)&contents,
404 sizeof(contents.pingid) + sizeof(groupchat_nodes) * j, CRYPTO_PACKET_GROUP_CHAT_SEND_NODES);
405}
406
407static int handle_getnodes(const Group_Chat *chat, IP_Port source, int peernum, const uint8_t *data, uint32_t len)
408{
409 if (len != sizeof(getnodes_data))
410 return 1;
411
412 if ((uint32_t)peernum >= chat->numpeers)
413 return 1;
414
415 getnodes_data contents;
416 memcpy(&contents, data, sizeof(contents));
417 send_sendnodes(chat, source, peernum, contents.pingid);
418
419 if (peer_okping(chat, chat->group[peernum].client_id) > 0)
420 send_getnodes(chat, source, peernum);
421
422 return 0;
423}
424
425static int handle_sendnodes(Group_Chat *chat, IP_Port source, int peernum, const uint8_t *data, uint32_t len)
426{
427 if ((uint32_t)peernum >= chat->numpeers)
428 return 1;
429
430 if (len > sizeof(sendnodes_data) || len < sizeof(uint64_t))
431 return 1;
432
433 if ((len - sizeof(uint64_t)) % sizeof(groupchat_nodes) != 0)
434 return 1;
435
436 if (is_timeout(chat->group[peernum].last_pinged, GROUP_PING_TIMEOUT))
437 return 1;
438
439 sendnodes_data contents;
440 memcpy(&contents, data, len);
441
442 if (contents.pingid != chat->group[peernum].pingid)
443 return 1;
444
445 uint16_t numnodes = (len - sizeof(contents.pingid)) / sizeof(groupchat_nodes);
446 uint32_t i;
447
448 IPPTs ippts_send;
449 ippts_send.timestamp = unix_time();
450
451 for (i = 0; i < numnodes; ++i) {
452 if (peer_okping(chat, contents.nodes[i].client_id) > 0) {
453 int peern = peer_in_chat(chat, contents.nodes[i].client_id);
454
455 if (peern == -1) { /*NOTE: This is just for testing and will be removed later.*/
456 peern = addpeer(chat, contents.nodes[i].client_id);
457 }
458
459 if (peern == -1)
460 continue;
461
462 to_host_family(&contents.nodes[i].ip_port.ip);
463 send_getnodes(chat, contents.nodes[i].ip_port, peern);
464
465 if (chat->assoc) {
466 ippts_send.ip_port = contents.nodes[i].ip_port;
467 Assoc_add_entry(chat->assoc, contents.nodes[i].client_id, &ippts_send, NULL, 0);
468 }
469 }
470 }
471
472 add_closepeer(chat, chat->group[peernum].client_id, source);
473
474 return 0;
475}
476
477#define GROUP_DATA_MIN_SIZE (crypto_box_PUBLICKEYBYTES + sizeof(uint32_t) + 1)
478static void send_names_new_peer(Group_Chat *chat);
479
480static int handle_data(Group_Chat *chat, const uint8_t *data, uint32_t len)
481{
482 if (len < GROUP_DATA_MIN_SIZE)
483 return 1;
484
485//TODO:
486 int peernum = peer_in_chat(chat, data);
487
488 if (peernum == -1) { /*NOTE: This is just for testing and will be removed later.*/
489 if (data[crypto_box_PUBLICKEYBYTES + sizeof(uint32_t)] != GROUP_CHAT_QUIT)
490 peernum = addpeer(chat, data);
491 }
492
493 if (peernum == -1)
494 return 1;
495
496 if (chat->group[peernum].deleted)
497 return 1;
498
499 /* Spam prevention (1 message per peer per second limit.)
500
501 if (chat->group[peernum].last_recv == temp_time)
502 return 1;
503 */
504 chat->group[peernum].last_recv = unix_time();
505
506 uint32_t message_num;
507 memcpy(&message_num, data + crypto_box_PUBLICKEYBYTES, sizeof(uint32_t));
508 message_num = ntohl(message_num);
509
510 if (chat->group[peernum].last_message_number == 0) {
511 chat->group[peernum].last_message_number = message_num;
512 } else if (message_num - chat->group[peernum].last_message_number > 64 ||
513 message_num == chat->group[peernum].last_message_number)
514 return 1;
515
516 chat->group[peernum].last_message_number = message_num;
517
518 int handled = 1;
519 const uint8_t *contents = data + GROUP_DATA_MIN_SIZE;
520 uint16_t contents_len = len - GROUP_DATA_MIN_SIZE;
521
522 switch (data[crypto_box_PUBLICKEYBYTES + sizeof(message_num)]) {
523 case GROUP_CHAT_PING: /* If message is ping */
524 if (contents_len != 0)
525 return 1;
526
527 chat->group[peernum].last_recv_msgping = unix_time();
528 break;
529
530 case GROUP_CHAT_NEW_PEER: /* If message is new peer */
531 if (contents_len != crypto_box_PUBLICKEYBYTES)
532 return 1;
533
534 addpeer(chat, contents);
535 send_names_new_peer(chat);
536 break;
537
538 case GROUP_CHAT_QUIT: /* If peer tells us he is quitting */
539 if (contents_len != 0)
540 return 1;
541
542 del_peer_set(chat, peernum);
543 break;
544
545 case GROUP_CHAT_PEER_NICK:
546 if (contents_len > MAX_NICK_BYTES || contents_len == 0)
547 return 1;
548
549 setnick(chat, peernum, contents, contents_len);
550 break;
551
552 case GROUP_CHAT_CHAT_MESSAGE: /* If message is chat message */
553 if (chat->group_message != NULL)
554 (*chat->group_message)(chat, peernum, contents, contents_len, chat->group_message_userdata);
555
556 break;
557
558 case GROUP_CHAT_ACTION: /* if message is a peer action */
559 if (chat->group_action != NULL)
560 (*chat->group_action)(chat, peernum, contents, contents_len, chat->group_action_userdata);
561
562 break;
563
564 default:
565 handled = 0;
566 break;
567
568 }
569
570 if (handled == 1) {
571 sendto_allpeers(chat, data, len, CRYPTO_PACKET_GROUP_CHAT_BROADCAST);
572 return 0;
573 }
574
575 return 1;
576}
577
578static uint8_t send_data(Group_Chat *chat, const uint8_t *data, uint32_t len, uint8_t message_id)
579{
580 if (len + GROUP_DATA_MIN_SIZE > MAX_CRYPTO_REQUEST_SIZE) /*NOTE: not the real maximum len.*/
581 return 1;
582
583 uint8_t packet[MAX_CRYPTO_REQUEST_SIZE];
584 ++chat->message_number;
585
586 if (chat->message_number == 0)
587 chat->message_number = 1;
588
589 uint32_t message_num = htonl(chat->message_number);
590//TODO
591 id_copy(packet, chat->self_public_key);
592 memcpy(packet + crypto_box_PUBLICKEYBYTES, &message_num, sizeof(message_num));
593
594 if (len != 0)
595 memcpy(packet + GROUP_DATA_MIN_SIZE, data, len);
596
597 packet[crypto_box_PUBLICKEYBYTES + sizeof(message_num)] = message_id;
598 return sendto_allpeers(chat, packet, len + GROUP_DATA_MIN_SIZE, CRYPTO_PACKET_GROUP_CHAT_BROADCAST);
599}
600/*
601 * Handle get nodes group packet.
602 *
603 * return 0 if handled correctly.
604 * return 1 if error.
605 */
606
607int handle_groupchatpacket(Group_Chat *chat, IP_Port source, const uint8_t *packet, uint32_t length)
608{
609 if (length > MAX_CRYPTO_REQUEST_SIZE)
610 return 1;
611
612 uint8_t public_key[crypto_box_PUBLICKEYBYTES];
613 uint8_t data[MAX_CRYPTO_REQUEST_SIZE];
614 uint8_t number;
615 int len = handle_request(chat->self_public_key, chat->self_secret_key, public_key, data, &number, packet, length);
616
617 if (len <= 0)
618 return 1;
619
620 if (id_equal(chat->self_public_key, public_key))
621 return 1;
622
623 int peernum = peer_in_chat(chat, public_key);
624
625 if (peernum == -1)
626 return 1;
627
628 switch (number) {
629 case CRYPTO_PACKET_GROUP_CHAT_GET_NODES:
630 return handle_getnodes(chat, source, peernum, data, len);
631
632 case CRYPTO_PACKET_GROUP_CHAT_SEND_NODES:
633 return handle_sendnodes(chat, source, peernum, data, len);
634
635 case CRYPTO_PACKET_GROUP_CHAT_BROADCAST:
636 return handle_data(chat, data, len);
637
638 default:
639 return 1;
640 }
641
642 return 1;
643}
644
645uint32_t group_sendmessage(Group_Chat *chat, const uint8_t *message, uint32_t length)
646{
647 return send_data(chat, message, length, GROUP_CHAT_CHAT_MESSAGE); //TODO: better return values?
648}
649
650uint32_t group_sendaction(Group_Chat *chat, const uint8_t *action, uint32_t length)
651{
652 return send_data(chat, action, length, GROUP_CHAT_ACTION);
653}
654
655/*
656 * Send id/nick combo to the group.
657 *
658 * returns the number of peers it has sent it to.
659 */
660static uint32_t group_send_nick(Group_Chat *chat, uint8_t *nick, uint16_t nick_len)
661{
662 if (nick_len > MAX_NICK_BYTES)
663 return 0;
664
665 return send_data(chat, nick, nick_len, GROUP_CHAT_PEER_NICK);
666}
667
668int set_nick(Group_Chat *chat, const uint8_t *nick, uint16_t nick_len)
669{
670 if (nick_len > MAX_NICK_BYTES || nick_len == 0)
671 return -1;
672
673 memcpy(chat->nick, nick, nick_len);
674 chat->nick_len = nick_len;
675 group_send_nick(chat, chat->nick, chat->nick_len);
676 return 0;
677}
678
679uint32_t group_newpeer(Group_Chat *chat, const uint8_t *client_id)
680{
681 addpeer(chat, client_id);
682 return send_data(chat, client_id, crypto_box_PUBLICKEYBYTES, GROUP_CHAT_NEW_PEER); //TODO: better return values?
683}
684
685void callback_groupmessage(Group_Chat *chat, void (*function)(Group_Chat *chat, int, const uint8_t *, uint16_t, void *),
686 void *userdata)
687{
688 chat->group_message = function;
689 chat->group_message_userdata = userdata;
690}
691
692void callback_groupaction(Group_Chat *chat, void (*function)(Group_Chat *chat, int, const uint8_t *, uint16_t, void *),
693 void *userdata)
694{
695 chat->group_action = function;
696 chat->group_action_userdata = userdata;
697}
698
699void callback_namelistchange(Group_Chat *chat, void (*function)(Group_Chat *chat, int peer, uint8_t change, void *),
700 void *userdata)
701{
702 chat->peer_namelistchange = function;
703 chat->group_namelistchange_userdata = userdata;
704}
705
706uint32_t group_numpeers(const Group_Chat *chat)
707{
708 return chat->numpeers;
709}
710
711uint32_t group_client_names(const Group_Chat *chat, uint8_t names[][MAX_NICK_BYTES], uint16_t lengths[],
712 uint16_t length)
713{
714 uint32_t i;
715
716 for (i = 0; i < chat->numpeers && i < length; ++i) {
717 lengths[i] = group_peername(chat, i, names[i]);
718 }
719
720 return i;
721}
722
723Group_Chat *new_groupchat(Networking_Core *net)
724{
725 unix_time_update();
726
727 if (net == 0)
728 return 0;
729
730 Group_Chat *chat = calloc(1, sizeof(Group_Chat));
731 chat->net = net;
732 crypto_box_keypair(chat->self_public_key, chat->self_secret_key);
733
734 /* (2^4) * 5 = 80 entries seems to be a moderate size */
735 chat->assoc = new_Assoc(4, 5, chat->self_public_key);
736
737 return chat;
738}
739
740#define NODE_PING_INTERVAL 10
741
742static void ping_close(Group_Chat *chat)
743{
744 uint32_t i;
745
746 for (i = 0; i < GROUP_CLOSE_CONNECTIONS; ++i) {
747 if (!is_timeout(chat->close[i].last_recv, BAD_GROUPNODE_TIMEOUT)) {
748 int peernum = peer_in_chat(chat, chat->close[i].client_id);
749
750 if (peernum == -1)
751 continue;
752
753 if (is_timeout(chat->group[peernum].last_pinged, NODE_PING_INTERVAL))
754 send_getnodes(chat, chat->close[i].ip_port, peernum);
755 }
756 }
757}
758
759/* Interval in seconds to send ping messages */
760#define GROUP_PING_INTERVAL 30
761
762static void ping_group(Group_Chat *chat)
763{
764 if (is_timeout(chat->last_sent_ping, GROUP_PING_INTERVAL)) {
765 if (send_data(chat, 0, 0, GROUP_CHAT_PING) != 0) /* Ping */
766 chat->last_sent_ping = unix_time();
767 }
768}
769
770#define DEL_PEER_DELAY 3
771static void del_dead_peers(Group_Chat *chat)
772{
773 uint32_t i;
774
775 for (i = 0; i < chat->numpeers; ++i) {
776 if (is_timeout(chat->group[i].last_recv_msgping, GROUP_PING_INTERVAL * 4)) {
777 delpeer(chat, i);
778 }
779
780 if (chat->group == NULL || i >= chat->numpeers)
781 break;
782
783 if (chat->group[i].deleted) {
784 if (is_timeout(chat->group[i].deleted_time, DEL_PEER_DELAY))
785 delpeer(chat, i);
786 }
787 }
788}
789
790#define NICK_SEND_INTERVAL 180
791static void send_names_new_peer(Group_Chat *chat)
792{
793 group_send_nick(chat, chat->nick, chat->nick_len);
794 chat->last_sent_nick = (unix_time() - NICK_SEND_INTERVAL) + 15;
795}
796static void send_names(Group_Chat *chat)
797{
798 /* send own nick from time to time, to let newly added peers be informed
799 * first time only: use a shorter timeframe, because we might not be in our own
800 * peer list yet */
801 if (is_timeout(chat->last_sent_nick, 180))
802 if (group_send_nick(chat, chat->nick, chat->nick_len) > 0) {
803 if (!chat->last_sent_nick)
804 chat->last_sent_nick = (unix_time() - NICK_SEND_INTERVAL) + 10;
805 else
806 chat->last_sent_nick = unix_time();
807 }
808}
809
810void do_groupchat(Group_Chat *chat)
811{
812 unix_time_update();
813 ping_close(chat);
814 ping_group(chat);
815 /* TODO: Maybe run this less? */
816 del_dead_peers(chat);
817 send_names(chat);
818}
819
820void kill_groupchat(Group_Chat *chat)
821{
822 send_data(chat, 0, 0, GROUP_CHAT_QUIT);
823 kill_Assoc(chat->assoc);
824 free(chat->group);
825 free(chat);
826}
827
828void chat_bootstrap(Group_Chat *chat, IP_Port ip_port, const uint8_t *client_id)
829{
830 send_getnodes(chat, ip_port, addpeer(chat, client_id));
831}
832
833void chat_bootstrap_nonlazy(Group_Chat *chat, IP_Port ip_port, const uint8_t *client_id)
834{
835 send_getnodes(chat, ip_port, addpeer(chat, client_id));
836 add_closepeer(chat, client_id, ip_port);
837}
diff --git a/toxcore/group_chats.h b/toxcore/group_chats.h
deleted file mode 100644
index 1a7a2e04..00000000
--- a/toxcore/group_chats.h
+++ /dev/null
@@ -1,199 +0,0 @@
1/* group_chats.h
2 *
3 * An implementation of massive text only group chats.
4 *
5 *
6 * Copyright (C) 2013 Tox project All Rights Reserved.
7 *
8 * This file is part of Tox.
9 *
10 * Tox is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, either version 3 of the License, or
13 * (at your option) any later version.
14 *
15 * Tox is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with Tox. If not, see <http://www.gnu.org/licenses/>.
22 *
23 */
24
25#ifndef GROUP_CHATS_H
26#define GROUP_CHATS_H
27
28#define MAX_NICK_BYTES 128
29
30typedef struct {
31 uint8_t client_id[crypto_box_PUBLICKEYBYTES];
32 uint64_t pingid;
33 uint64_t last_pinged;
34 IP_Port ping_via;
35
36 uint64_t last_recv;
37 uint64_t last_recv_msgping;
38 uint32_t last_message_number;
39
40 uint8_t nick[MAX_NICK_BYTES];
41 uint16_t nick_len;
42
43 uint8_t deleted;
44 uint64_t deleted_time;
45} Group_Peer;
46
47typedef struct {
48 uint8_t client_id[crypto_box_PUBLICKEYBYTES];
49 IP_Port ip_port;
50 uint64_t last_recv;
51} Group_Close;
52
53#define GROUP_CLOSE_CONNECTIONS 6
54
55typedef struct Group_Chat {
56 Networking_Core *net;
57 uint8_t self_public_key[crypto_box_PUBLICKEYBYTES];
58 uint8_t self_secret_key[crypto_box_SECRETKEYBYTES];
59
60 Group_Peer *group;
61 Group_Close close[GROUP_CLOSE_CONNECTIONS];
62 uint32_t numpeers;
63
64 uint32_t message_number;
65 void (*group_message)(struct Group_Chat *m, int, const uint8_t *, uint16_t, void *);
66 void *group_message_userdata;
67 void (*group_action)(struct Group_Chat *m, int, const uint8_t *, uint16_t, void *);
68 void *group_action_userdata;
69 void (*peer_namelistchange)(struct Group_Chat *m, int peer, uint8_t change, void *);
70 void *group_namelistchange_userdata;
71
72 uint64_t last_sent_ping;
73
74 uint8_t nick[MAX_NICK_BYTES];
75 uint16_t nick_len;
76 uint64_t last_sent_nick;
77
78 struct Assoc *assoc;
79} Group_Chat;
80
81#define GROUP_CHAT_PING 0
82#define GROUP_CHAT_NEW_PEER 16
83#define GROUP_CHAT_QUIT 24
84#define GROUP_CHAT_PEER_NICK 48
85#define GROUP_CHAT_CHAT_MESSAGE 64
86#define GROUP_CHAT_ACTION 63
87
88/* Copy the name of peernum to name.
89 * name must be at least MAX_NICK_BYTES long.
90 *
91 * return length of name if success
92 * return -1 if failure
93 */
94int group_peername(const Group_Chat *chat, int peernum, uint8_t *name);
95
96/*
97 * Set callback function for chat messages.
98 *
99 * format of function is: function(Group_Chat *chat, peer number, message, message length, userdata)
100 */
101void callback_groupmessage(Group_Chat *chat, void (*function)(Group_Chat *chat, int, const uint8_t *, uint16_t, void *),
102 void *userdata);
103
104/*
105 * Set callback function for actions.
106 *
107 * format of function is: function(Group_Chat *chat, peer number, action, action length, userdata)
108 */
109void callback_groupaction(Group_Chat *chat, void (*function)(Group_Chat *chat, int, const uint8_t *, uint16_t, void *),
110 void *userdata);
111
112/*
113 * Set callback function for peer name list changes.
114 *
115 * It gets called every time the name list changes(new peer/name, deleted peer)
116 *
117 * format of function is: function(Group_Chat *chat, userdata)
118 */
119typedef enum {
120 CHAT_CHANGE_PEER_ADD,
121 CHAT_CHANGE_PEER_DEL,
122 CHAT_CHANGE_PEER_NAME,
123} CHAT_CHANGE;
124
125void callback_namelistchange(Group_Chat *chat, void (*function)(Group_Chat *chat, int peer, uint8_t change, void *),
126 void *userdata);
127
128/*
129 * Send a message to the group.
130 *
131 * returns the number of peers it has sent it to.
132 */
133uint32_t group_sendmessage(Group_Chat *chat, const uint8_t *message, uint32_t length);
134
135/*
136 * Send an action to the group.
137 *
138 * returns the number of peers it has sent it to.
139 */
140uint32_t group_sendaction(Group_Chat *chat, const uint8_t *action, uint32_t length);
141
142/*
143 * Set our nick for this group.
144 *
145 * returns -1 on failure, 0 on success.
146 */
147int set_nick(Group_Chat *chat, const uint8_t *nick, uint16_t nick_len);
148
149/*
150 * Tell everyone about a new peer (a person we are inviting for example.)
151 *
152 */
153uint32_t group_newpeer(Group_Chat *chat, const uint8_t *client_id);
154
155
156/* Create a new group chat.
157 *
158 * Returns a new group chat instance if success.
159 *
160 * Returns a NULL pointer if fail.
161 */
162Group_Chat *new_groupchat(Networking_Core *net);
163
164
165/* Return the number of peers in the group chat.
166 */
167uint32_t group_numpeers(const Group_Chat *chat);
168
169/* List all the peers in the group chat.
170 *
171 * Copies the names of the peers to the name[length][MAX_NICK_BYTES] array.
172 *
173 * returns the number of peers.
174 */
175uint32_t group_client_names(const Group_Chat *chat, uint8_t names[][MAX_NICK_BYTES], uint16_t lengths[],
176 uint16_t length);
177
178/* Kill a group chat
179 *
180 * Frees the memory and everything.
181 */
182void kill_groupchat(Group_Chat *chat);
183
184/*
185 * This is the main loop.
186 */
187void do_groupchat(Group_Chat *chat);
188
189/* if we receive a group chat packet we call this function so it can be handled.
190 return 0 if packet is handled correctly.
191 return 1 if it didn't handle the packet or if the packet was shit. */
192int handle_groupchatpacket(Group_Chat *chat, IP_Port source, const uint8_t *packet, uint32_t length);
193
194
195void chat_bootstrap(Group_Chat *chat, IP_Port ip_port, const uint8_t *client_id);
196void chat_bootstrap_nonlazy(Group_Chat *chat, IP_Port ip_port, const uint8_t *client_id);
197
198
199#endif
diff --git a/toxcore/net_crypto.c b/toxcore/net_crypto.c
index 48bf5164..63012ce6 100644
--- a/toxcore/net_crypto.c
+++ b/toxcore/net_crypto.c
@@ -1238,7 +1238,11 @@ static int handle_packet_connection(Net_Crypto *c, int crypt_connection_id, cons
1238 1238
1239 conn->status = CRYPTO_CONN_NOT_CONFIRMED; 1239 conn->status = CRYPTO_CONN_NOT_CONFIRMED;
1240 /* Status needs to be CRYPTO_CONN_NOT_CONFIRMED for this to work. */ 1240 /* Status needs to be CRYPTO_CONN_NOT_CONFIRMED for this to work. */
1241 set_connection_dht_public_key(c, crypt_connection_id, dht_public_key, current_time_monotonic()); 1241 set_connection_dht_public_key(c, crypt_connection_id, dht_public_key);
1242
1243 if (conn->dht_pk_callback)
1244 conn->dht_pk_callback(conn->dht_pk_callback_object, conn->dht_pk_callback_number, dht_public_key);
1245
1242 } else { 1246 } else {
1243 return -1; 1247 return -1;
1244 } 1248 }
@@ -1473,7 +1477,11 @@ static int handle_new_connection_handshake(Net_Crypto *c, IP_Port source, const
1473 if (create_send_handshake(c, crypt_connection_id, n_c.cookie, n_c.dht_public_key) == 0) { 1477 if (create_send_handshake(c, crypt_connection_id, n_c.cookie, n_c.dht_public_key) == 0) {
1474 conn->status = CRYPTO_CONN_NOT_CONFIRMED; 1478 conn->status = CRYPTO_CONN_NOT_CONFIRMED;
1475 /* Status needs to be CRYPTO_CONN_NOT_CONFIRMED for this to work. */ 1479 /* Status needs to be CRYPTO_CONN_NOT_CONFIRMED for this to work. */
1476 set_connection_dht_public_key(c, crypt_connection_id, n_c.dht_public_key, current_time_monotonic()); 1480 set_connection_dht_public_key(c, crypt_connection_id, n_c.dht_public_key);
1481
1482 if (conn->dht_pk_callback)
1483 conn->dht_pk_callback(conn->dht_pk_callback_object, conn->dht_pk_callback_number, n_c.dht_public_key);
1484
1477 ret = 0; 1485 ret = 0;
1478 } 1486 }
1479 } 1487 }
@@ -1522,7 +1530,7 @@ int accept_crypto_connection(Net_Crypto *c, New_Connection *n_c)
1522 1530
1523 conn->status = CRYPTO_CONN_NOT_CONFIRMED; 1531 conn->status = CRYPTO_CONN_NOT_CONFIRMED;
1524 /* Status needs to be CRYPTO_CONN_NOT_CONFIRMED for this to work. */ 1532 /* Status needs to be CRYPTO_CONN_NOT_CONFIRMED for this to work. */
1525 set_connection_dht_public_key(c, crypt_connection_id, n_c->dht_public_key, current_time_monotonic()); 1533 set_connection_dht_public_key(c, crypt_connection_id, n_c->dht_public_key);
1526 conn->packet_send_rate = CRYPTO_PACKET_MIN_RATE; 1534 conn->packet_send_rate = CRYPTO_PACKET_MIN_RATE;
1527 conn->packets_left = CRYPTO_MIN_QUEUE_LENGTH; 1535 conn->packets_left = CRYPTO_MIN_QUEUE_LENGTH;
1528 crypto_connection_add_source(c, crypt_connection_id, n_c->source); 1536 crypto_connection_add_source(c, crypt_connection_id, n_c->source);
@@ -1618,9 +1626,9 @@ static int connect_peer_tcp(Net_Crypto *c, int crypt_connection_id)
1618/* Copy friends DHT public key into dht_key. 1626/* Copy friends DHT public key into dht_key.
1619 * 1627 *
1620 * return 0 on failure (no key copied). 1628 * return 0 on failure (no key copied).
1621 * return timestamp on success (key copied). 1629 * return 1 on success (key copied).
1622 */ 1630 */
1623uint64_t get_connection_dht_key(const Net_Crypto *c, int crypt_connection_id, uint8_t *dht_public_key) 1631unsigned int get_connection_dht_key(const Net_Crypto *c, int crypt_connection_id, uint8_t *dht_public_key)
1624{ 1632{
1625 Crypto_Connection *conn = get_crypto_connection(c, crypt_connection_id); 1633 Crypto_Connection *conn = get_crypto_connection(c, crypt_connection_id);
1626 1634
@@ -1631,28 +1639,22 @@ uint64_t get_connection_dht_key(const Net_Crypto *c, int crypt_connection_id, ui
1631 return 0; 1639 return 0;
1632 1640
1633 memcpy(dht_public_key, conn->dht_public_key, crypto_box_PUBLICKEYBYTES); 1641 memcpy(dht_public_key, conn->dht_public_key, crypto_box_PUBLICKEYBYTES);
1634 return conn->dht_public_key_timestamp; 1642 return 1;
1635} 1643}
1636 1644
1637 1645
1638/* Set the DHT public key of the crypto connection. 1646/* Set the DHT public key of the crypto connection.
1639 * timestamp is the time (current_time_monotonic()) at which the key was last confirmed belonging to
1640 * the other peer.
1641 * 1647 *
1642 * return -1 on failure. 1648 * return -1 on failure.
1643 * return 0 on success. 1649 * return 0 on success.
1644 */ 1650 */
1645int set_connection_dht_public_key(Net_Crypto *c, int crypt_connection_id, const uint8_t *dht_public_key, 1651int set_connection_dht_public_key(Net_Crypto *c, int crypt_connection_id, const uint8_t *dht_public_key)
1646 uint64_t timestamp)
1647{ 1652{
1648 Crypto_Connection *conn = get_crypto_connection(c, crypt_connection_id); 1653 Crypto_Connection *conn = get_crypto_connection(c, crypt_connection_id);
1649 1654
1650 if (conn == 0) 1655 if (conn == 0)
1651 return -1; 1656 return -1;
1652 1657
1653 if (timestamp <= conn->dht_public_key_timestamp)
1654 return -1;
1655
1656 if (conn->dht_public_key_set == 1 && memcmp(conn->dht_public_key, dht_public_key, crypto_box_PUBLICKEYBYTES) == 0) 1658 if (conn->dht_public_key_set == 1 && memcmp(conn->dht_public_key, dht_public_key, crypto_box_PUBLICKEYBYTES) == 0)
1657 return -1; 1659 return -1;
1658 1660
@@ -1662,7 +1664,6 @@ int set_connection_dht_public_key(Net_Crypto *c, int crypt_connection_id, const
1662 1664
1663 memcpy(conn->dht_public_key, dht_public_key, crypto_box_PUBLICKEYBYTES); 1665 memcpy(conn->dht_public_key, dht_public_key, crypto_box_PUBLICKEYBYTES);
1664 conn->dht_public_key_set = 1; 1666 conn->dht_public_key_set = 1;
1665 conn->dht_public_key_timestamp = timestamp;
1666 1667
1667 if (conn->status == CRYPTO_CONN_COOKIE_REQUESTING) { 1668 if (conn->status == CRYPTO_CONN_COOKIE_REQUESTING) {
1668 conn->cookie_request_number = random_64b(); 1669 conn->cookie_request_number = random_64b();
@@ -1692,6 +1693,9 @@ int set_direct_ip_port(Net_Crypto *c, int crypt_connection_id, IP_Port ip_port)
1692 if (conn == 0) 1693 if (conn == 0)
1693 return -1; 1694 return -1;
1694 1695
1696 if (ip_port.ip.family != AF_INET && ip_port.ip.family != AF_INET6)
1697 return -1;
1698
1695 if (!ipport_equal(&ip_port, &conn->ip_port)) { 1699 if (!ipport_equal(&ip_port, &conn->ip_port)) {
1696 if (bs_list_add(&c->ip_port_list, &ip_port, crypt_connection_id)) { 1700 if (bs_list_add(&c->ip_port_list, &ip_port, crypt_connection_id)) {
1697 bs_list_remove(&c->ip_port_list, &conn->ip_port, crypt_connection_id); 1701 bs_list_remove(&c->ip_port_list, &conn->ip_port, crypt_connection_id);
@@ -2243,6 +2247,29 @@ int connection_lossy_data_handler(Net_Crypto *c, int crypt_connection_id,
2243 return 0; 2247 return 0;
2244} 2248}
2245 2249
2250
2251/* Set the function for this friend that will be callbacked with object and number
2252 * when that friend gives us his DHT temporary public key.
2253 *
2254 * object and number will be passed as argument to this function.
2255 *
2256 * return -1 on failure.
2257 * return 0 on success.
2258 */
2259int nc_dht_pk_callback(Net_Crypto *c, int crypt_connection_id, void (*function)(void *data, int32_t number,
2260 const uint8_t *dht_public_key), void *object, uint32_t number)
2261{
2262 Crypto_Connection *conn = get_crypto_connection(c, crypt_connection_id);
2263
2264 if (conn == 0)
2265 return -1;
2266
2267 conn->dht_pk_callback = function;
2268 conn->dht_pk_callback_object = object;
2269 conn->dht_pk_callback_number = number;
2270 return 0;
2271}
2272
2246/* Get the crypto connection id from the ip_port. 2273/* Get the crypto connection id from the ip_port.
2247 * 2274 *
2248 * return -1 on failure. 2275 * return -1 on failure.
diff --git a/toxcore/net_crypto.h b/toxcore/net_crypto.h
index 5e5df499..3245b6a2 100644
--- a/toxcore/net_crypto.h
+++ b/toxcore/net_crypto.h
@@ -111,7 +111,6 @@ typedef struct {
111 uint64_t cookie_request_number; /* number used in the cookie request packets for this connection */ 111 uint64_t cookie_request_number; /* number used in the cookie request packets for this connection */
112 uint8_t dht_public_key[crypto_box_PUBLICKEYBYTES]; /* The dht public key of the peer */ 112 uint8_t dht_public_key[crypto_box_PUBLICKEYBYTES]; /* The dht public key of the peer */
113 uint8_t dht_public_key_set; /* True if the dht public key is set, false if it isn't. */ 113 uint8_t dht_public_key_set; /* True if the dht public key is set, false if it isn't. */
114 uint64_t dht_public_key_timestamp; /* Timestamp of the last time we confirmed the key was correct. */
115 114
116 uint8_t *temp_packet; /* Where the cookie request/handshake packet is stored while it is being sent. */ 115 uint8_t *temp_packet; /* Where the cookie request/handshake packet is stored while it is being sent. */
117 uint16_t temp_packet_length; 116 uint16_t temp_packet_length;
@@ -161,6 +160,10 @@ typedef struct {
161 uint8_t maximum_speed_reached; 160 uint8_t maximum_speed_reached;
162 161
163 pthread_mutex_t mutex; 162 pthread_mutex_t mutex;
163
164 void (*dht_pk_callback)(void *data, int32_t number, const uint8_t *dht_public_key);
165 void *dht_pk_callback_object;
166 uint32_t dht_pk_callback_number;
164} Crypto_Connection; 167} Crypto_Connection;
165 168
166typedef struct { 169typedef struct {
@@ -236,19 +239,16 @@ int new_crypto_connection(Net_Crypto *c, const uint8_t *real_public_key);
236/* Copy friends DHT public key into dht_key. 239/* Copy friends DHT public key into dht_key.
237 * 240 *
238 * return 0 on failure (no key copied). 241 * return 0 on failure (no key copied).
239 * return timestamp on success (key copied). 242 * return 1 on success (key copied).
240 */ 243 */
241uint64_t get_connection_dht_key(const Net_Crypto *c, int crypt_connection_id, uint8_t *dht_public_key); 244unsigned int get_connection_dht_key(const Net_Crypto *c, int crypt_connection_id, uint8_t *dht_public_key);
242 245
243/* Set the DHT public key of the crypto connection. 246/* Set the DHT public key of the crypto connection.
244 * timestamp is the time (current_time_monotonic()) at which the key was last confirmed belonging to
245 * the other peer.
246 * 247 *
247 * return -1 on failure. 248 * return -1 on failure.
248 * return 0 on success. 249 * return 0 on success.
249 */ 250 */
250int set_connection_dht_public_key(Net_Crypto *c, int crypt_connection_id, const uint8_t *dht_public_key, 251int set_connection_dht_public_key(Net_Crypto *c, int crypt_connection_id, const uint8_t *dht_public_key);
251 uint64_t timestamp);
252 252
253/* Set the direct ip of the crypto connection. 253/* Set the direct ip of the crypto connection.
254 * 254 *
@@ -294,6 +294,17 @@ int connection_lossy_data_handler(Net_Crypto *c, int crypt_connection_id,
294 int (*connection_lossy_data_callback)(void *object, int id, const uint8_t *data, uint16_t length), void *object, 294 int (*connection_lossy_data_callback)(void *object, int id, const uint8_t *data, uint16_t length), void *object,
295 int id); 295 int id);
296 296
297/* Set the function for this friend that will be callbacked with object and number
298 * when that friend gives us his DHT temporary public key.
299 *
300 * object and number will be passed as argument to this function.
301 *
302 * return -1 on failure.
303 * return 0 on success.
304 */
305int nc_dht_pk_callback(Net_Crypto *c, int crypt_connection_id, void (*function)(void *data, int32_t number,
306 const uint8_t *dht_public_key), void *object, uint32_t number);
307
297/* returns the number of packet slots left in the sendbuffer. 308/* returns the number of packet slots left in the sendbuffer.
298 * return 0 if failure. 309 * return 0 if failure.
299 */ 310 */
diff --git a/toxcore/network.h b/toxcore/network.h
index b250604e..2c090aef 100644
--- a/toxcore/network.h
+++ b/toxcore/network.h
@@ -105,7 +105,6 @@ typedef int sock_t;
105#define NET_PACKET_CRYPTO_DATA 27 /* Crypto data packet */ 105#define NET_PACKET_CRYPTO_DATA 27 /* Crypto data packet */
106#define NET_PACKET_CRYPTO 32 /* Encrypted data packet ID. */ 106#define NET_PACKET_CRYPTO 32 /* Encrypted data packet ID. */
107#define NET_PACKET_LAN_DISCOVERY 33 /* LAN discovery packet ID. */ 107#define NET_PACKET_LAN_DISCOVERY 33 /* LAN discovery packet ID. */
108#define NET_PACKET_GROUP_CHATS 48 /* Group chats packet ID. */
109 108
110/* See: docs/Prevent_Tracking.txt and onion.{c, h} */ 109/* See: docs/Prevent_Tracking.txt and onion.{c, h} */
111#define NET_PACKET_ONION_SEND_INITIAL 128 110#define NET_PACKET_ONION_SEND_INITIAL 128
@@ -135,8 +134,7 @@ typedef int sock_t;
135#define TCP_INET6 (AF_INET6 + 3) 134#define TCP_INET6 (AF_INET6 + 3)
136#define TCP_FAMILY (AF_INET6 + 4) 135#define TCP_FAMILY (AF_INET6 + 4)
137 136
138typedef union __attribute__ ((__packed__)) 137typedef union {
139{
140 uint8_t uint8[4]; 138 uint8_t uint8[4];
141 uint16_t uint16[2]; 139 uint16_t uint16[2];
142 uint32_t uint32; 140 uint32_t uint32;
@@ -144,8 +142,7 @@ typedef union __attribute__ ((__packed__))
144} 142}
145IP4; 143IP4;
146 144
147typedef union __attribute__ ((__packed__)) 145typedef union {
148{
149 uint8_t uint8[16]; 146 uint8_t uint8[16];
150 uint16_t uint16[8]; 147 uint16_t uint16[8];
151 uint32_t uint32[4]; 148 uint32_t uint32[4];
@@ -154,8 +151,7 @@ typedef union __attribute__ ((__packed__))
154} 151}
155IP6; 152IP6;
156 153
157typedef struct __attribute__ ((__packed__)) 154typedef struct {
158{
159 uint8_t family; 155 uint8_t family;
160 union { 156 union {
161 IP4 ip4; 157 IP4 ip4;
@@ -164,8 +160,7 @@ typedef struct __attribute__ ((__packed__))
164} 160}
165IP; 161IP;
166 162
167typedef struct __attribute__ ((__packed__)) __attribute__((gcc_struct)) 163typedef struct {
168{
169 IP ip; 164 IP ip;
170 uint16_t port; 165 uint16_t port;
171} 166}
diff --git a/toxcore/onion_client.c b/toxcore/onion_client.c
index 3b130602..8ba1fdc5 100644
--- a/toxcore/onion_client.c
+++ b/toxcore/onion_client.c
@@ -638,7 +638,12 @@ static int handle_fakeid_announce(void *object, const uint8_t *source_pubkey, co
638 return 1; 638 return 1;
639 639
640 onion_c->friends_list[friend_num].last_noreplay = no_replay; 640 onion_c->friends_list[friend_num].last_noreplay = no_replay;
641 onion_set_friend_DHT_pubkey(onion_c, friend_num, data + 1 + sizeof(uint64_t), current_time_monotonic()); 641
642 if (onion_c->friends_list[friend_num].dht_pk_callback)
643 onion_c->friends_list[friend_num].dht_pk_callback(onion_c->friends_list[friend_num].dht_pk_callback_object,
644 onion_c->friends_list[friend_num].dht_pk_callback_number, data + 1 + sizeof(uint64_t));
645
646 onion_set_friend_DHT_pubkey(onion_c, friend_num, data + 1 + sizeof(uint64_t));
642 onion_c->friends_list[friend_num].last_seen = unix_time(); 647 onion_c->friends_list[friend_num].last_seen = unix_time();
643 648
644 uint16_t len_nodes = length - FAKEID_DATA_MIN_LENGTH; 649 uint16_t len_nodes = length - FAKEID_DATA_MIN_LENGTH;
@@ -957,8 +962,8 @@ int onion_delfriend(Onion_Client *onion_c, int friend_num)
957 if ((uint32_t)friend_num >= onion_c->num_friends) 962 if ((uint32_t)friend_num >= onion_c->num_friends)
958 return -1; 963 return -1;
959 964
960 if (onion_c->friends_list[friend_num].is_fake_clientid) 965 //if (onion_c->friends_list[friend_num].is_fake_clientid)
961 DHT_delfriend(onion_c->dht, onion_c->friends_list[friend_num].fake_client_id); 966 // DHT_delfriend(onion_c->dht, onion_c->friends_list[friend_num].fake_client_id, 0);
962 967
963 memset(&(onion_c->friends_list[friend_num]), 0, sizeof(Onion_Friend)); 968 memset(&(onion_c->friends_list[friend_num]), 0, sizeof(Onion_Friend));
964 uint32_t i; 969 uint32_t i;
@@ -996,22 +1001,37 @@ int recv_tcp_relay_handler(Onion_Client *onion_c, int friend_num, int (*tcp_rela
996 return 0; 1001 return 0;
997} 1002}
998 1003
999/* Set a friends DHT public key. 1004/* Set the function for this friend that will be callbacked with object and number
1000 * timestamp is the time (current_time_monotonic()) at which the key was last confirmed belonging to 1005 * when that friend gives us his DHT temporary public key.
1001 * the other peer. 1006 *
1007 * object and number will be passed as argument to this function.
1002 * 1008 *
1003 * return -1 on failure. 1009 * return -1 on failure.
1004 * return 0 on success. 1010 * return 0 on success.
1005 */ 1011 */
1006int onion_set_friend_DHT_pubkey(Onion_Client *onion_c, int friend_num, const uint8_t *dht_key, uint64_t timestamp) 1012int onion_dht_pk_callback(Onion_Client *onion_c, int friend_num, void (*function)(void *data, int32_t number,
1013 const uint8_t *dht_public_key), void *object, uint32_t number)
1007{ 1014{
1008 if ((uint32_t)friend_num >= onion_c->num_friends) 1015 if ((uint32_t)friend_num >= onion_c->num_friends)
1009 return -1; 1016 return -1;
1010 1017
1011 if (onion_c->friends_list[friend_num].status == 0) 1018 onion_c->friends_list[friend_num].dht_pk_callback = function;
1019 onion_c->friends_list[friend_num].dht_pk_callback_object = object;
1020 onion_c->friends_list[friend_num].dht_pk_callback_number = number;
1021 return 0;
1022}
1023
1024/* Set a friends DHT public key.
1025 *
1026 * return -1 on failure.
1027 * return 0 on success.
1028 */
1029int onion_set_friend_DHT_pubkey(Onion_Client *onion_c, int friend_num, const uint8_t *dht_key)
1030{
1031 if ((uint32_t)friend_num >= onion_c->num_friends)
1012 return -1; 1032 return -1;
1013 1033
1014 if (onion_c->friends_list[friend_num].fake_client_id_timestamp >= timestamp) 1034 if (onion_c->friends_list[friend_num].status == 0)
1015 return -1; 1035 return -1;
1016 1036
1017 if (onion_c->friends_list[friend_num].is_fake_clientid) { 1037 if (onion_c->friends_list[friend_num].is_fake_clientid) {
@@ -1019,16 +1039,11 @@ int onion_set_friend_DHT_pubkey(Onion_Client *onion_c, int friend_num, const uin
1019 return -1; 1039 return -1;
1020 } 1040 }
1021 1041
1022 DHT_delfriend(onion_c->dht, onion_c->friends_list[friend_num].fake_client_id); 1042 onion_c->friends_list[friend_num].is_fake_clientid = 0;
1023 }
1024
1025 if (DHT_addfriend(onion_c->dht, dht_key) == 1) {
1026 return -1;
1027 } 1043 }
1028 1044
1029 onion_c->friends_list[friend_num].last_seen = unix_time(); 1045 onion_c->friends_list[friend_num].last_seen = unix_time();
1030 onion_c->friends_list[friend_num].is_fake_clientid = 1; 1046 onion_c->friends_list[friend_num].is_fake_clientid = 1;
1031 onion_c->friends_list[friend_num].fake_client_id_timestamp = timestamp;
1032 memcpy(onion_c->friends_list[friend_num].fake_client_id, dht_key, crypto_box_PUBLICKEYBYTES); 1047 memcpy(onion_c->friends_list[friend_num].fake_client_id, dht_key, crypto_box_PUBLICKEYBYTES);
1033 1048
1034 return 0; 1049 return 0;
@@ -1037,9 +1052,9 @@ int onion_set_friend_DHT_pubkey(Onion_Client *onion_c, int friend_num, const uin
1037/* Copy friends DHT public key into dht_key. 1052/* Copy friends DHT public key into dht_key.
1038 * 1053 *
1039 * return 0 on failure (no key copied). 1054 * return 0 on failure (no key copied).
1040 * return timestamp on success (key copied). 1055 * return 1 on success (key copied).
1041 */ 1056 */
1042uint64_t onion_getfriend_DHT_pubkey(const Onion_Client *onion_c, int friend_num, uint8_t *dht_key) 1057unsigned int onion_getfriend_DHT_pubkey(const Onion_Client *onion_c, int friend_num, uint8_t *dht_key)
1043{ 1058{
1044 if ((uint32_t)friend_num >= onion_c->num_friends) 1059 if ((uint32_t)friend_num >= onion_c->num_friends)
1045 return 0; 1060 return 0;
@@ -1051,7 +1066,7 @@ uint64_t onion_getfriend_DHT_pubkey(const Onion_Client *onion_c, int friend_num,
1051 return 0; 1066 return 0;
1052 1067
1053 memcpy(dht_key, onion_c->friends_list[friend_num].fake_client_id, crypto_box_PUBLICKEYBYTES); 1068 memcpy(dht_key, onion_c->friends_list[friend_num].fake_client_id, crypto_box_PUBLICKEYBYTES);
1054 return onion_c->friends_list[friend_num].fake_client_id_timestamp; 1069 return 1;
1055} 1070}
1056 1071
1057/* Get the ip of friend friendnum and put it in ip_port 1072/* Get the ip of friend friendnum and put it in ip_port
@@ -1189,23 +1204,6 @@ static void do_friend(Onion_Client *onion_c, uint16_t friendnum)
1189 } 1204 }
1190} 1205}
1191 1206
1192/* Timeout before which a peer is considered dead and removed from the DHT search. */
1193#define DEAD_ONION_TIMEOUT (10 * 60)
1194
1195static void cleanup_friend(Onion_Client *onion_c, uint16_t friendnum)
1196{
1197 if (friendnum >= onion_c->num_friends)
1198 return;
1199
1200 if (onion_c->friends_list[friendnum].status == 0)
1201 return;
1202
1203 if (onion_c->friends_list[friendnum].is_fake_clientid && !onion_c->friends_list[friendnum].is_online
1204 && is_timeout(onion_c->friends_list[friendnum].last_seen, DEAD_ONION_TIMEOUT)) {
1205 onion_c->friends_list[friendnum].is_fake_clientid = 0;
1206 DHT_delfriend(onion_c->dht, onion_c->friends_list[friendnum].fake_client_id);
1207 }
1208}
1209 1207
1210/* Function to call when onion data packet with contents beginning with byte is received. */ 1208/* Function to call when onion data packet with contents beginning with byte is received. */
1211void oniondata_registerhandler(Onion_Client *onion_c, uint8_t byte, oniondata_handler_callback cb, void *object) 1209void oniondata_registerhandler(Onion_Client *onion_c, uint8_t byte, oniondata_handler_callback cb, void *object)
@@ -1278,7 +1276,6 @@ void do_onion_client(Onion_Client *onion_c)
1278 if (onion_isconnected(onion_c)) { 1276 if (onion_isconnected(onion_c)) {
1279 for (i = 0; i < onion_c->num_friends; ++i) { 1277 for (i = 0; i < onion_c->num_friends; ++i) {
1280 do_friend(onion_c, i); 1278 do_friend(onion_c, i);
1281 cleanup_friend(onion_c, i);
1282 } 1279 }
1283 } 1280 }
1284 1281
diff --git a/toxcore/onion_client.h b/toxcore/onion_client.h
index cf0975d3..483038e8 100644
--- a/toxcore/onion_client.h
+++ b/toxcore/onion_client.h
@@ -36,7 +36,7 @@
36#define ONION_FAKEID_INTERVAL 30 36#define ONION_FAKEID_INTERVAL 30
37#define DHT_FAKEID_INTERVAL 20 37#define DHT_FAKEID_INTERVAL 20
38 38
39#define NUMBER_ONION_PATHS 3 39#define NUMBER_ONION_PATHS 6
40 40
41/* The timeout the first time the path is added and 41/* The timeout the first time the path is added and
42 then for all the next consecutive times */ 42 then for all the next consecutive times */
@@ -79,7 +79,6 @@ typedef struct {
79 uint8_t is_online; /* Set by the onion_set_friend_status function. */ 79 uint8_t is_online; /* Set by the onion_set_friend_status function. */
80 80
81 uint8_t is_fake_clientid; /* 0 if we don't know the fake client id of the other 1 if we do. */ 81 uint8_t is_fake_clientid; /* 0 if we don't know the fake client id of the other 1 if we do. */
82 uint64_t fake_client_id_timestamp;
83 uint8_t fake_client_id[crypto_box_PUBLICKEYBYTES]; 82 uint8_t fake_client_id[crypto_box_PUBLICKEYBYTES];
84 uint8_t real_client_id[crypto_box_PUBLICKEYBYTES]; 83 uint8_t real_client_id[crypto_box_PUBLICKEYBYTES];
85 84
@@ -103,6 +102,10 @@ typedef struct {
103 void *tcp_relay_node_callback_object; 102 void *tcp_relay_node_callback_object;
104 uint32_t tcp_relay_node_callback_number; 103 uint32_t tcp_relay_node_callback_number;
105 104
105 void (*dht_pk_callback)(void *data, int32_t number, const uint8_t *dht_public_key);
106 void *dht_pk_callback_object;
107 uint32_t dht_pk_callback_number;
108
106 uint32_t run_count; 109 uint32_t run_count;
107} Onion_Friend; 110} Onion_Friend;
108 111
@@ -205,6 +208,18 @@ int onion_getfriendip(const Onion_Client *onion_c, int friend_num, IP_Port *ip_p
205int recv_tcp_relay_handler(Onion_Client *onion_c, int friend_num, int (*tcp_relay_node_callback)(void *object, 208int recv_tcp_relay_handler(Onion_Client *onion_c, int friend_num, int (*tcp_relay_node_callback)(void *object,
206 uint32_t number, IP_Port ip_port, const uint8_t *public_key), void *object, uint32_t number); 209 uint32_t number, IP_Port ip_port, const uint8_t *public_key), void *object, uint32_t number);
207 210
211
212/* Set the function for this friend that will be callbacked with object and number
213 * when that friend gives us his DHT temporary public key.
214 *
215 * object and number will be passed as argument to this function.
216 *
217 * return -1 on failure.
218 * return 0 on success.
219 */
220int onion_dht_pk_callback(Onion_Client *onion_c, int friend_num, void (*function)(void *data, int32_t number,
221 const uint8_t *dht_public_key), void *object, uint32_t number);
222
208/* Set a friends DHT public key. 223/* Set a friends DHT public key.
209 * timestamp is the time (current_time_monotonic()) at which the key was last confirmed belonging to 224 * timestamp is the time (current_time_monotonic()) at which the key was last confirmed belonging to
210 * the other peer. 225 * the other peer.
@@ -212,14 +227,14 @@ int recv_tcp_relay_handler(Onion_Client *onion_c, int friend_num, int (*tcp_rela
212 * return -1 on failure. 227 * return -1 on failure.
213 * return 0 on success. 228 * return 0 on success.
214 */ 229 */
215int onion_set_friend_DHT_pubkey(Onion_Client *onion_c, int friend_num, const uint8_t *dht_key, uint64_t timestamp); 230int onion_set_friend_DHT_pubkey(Onion_Client *onion_c, int friend_num, const uint8_t *dht_key);
216 231
217/* Copy friends DHT public key into dht_key. 232/* Copy friends DHT public key into dht_key.
218 * 233 *
219 * return 0 on failure (no key copied). 234 * return 0 on failure (no key copied).
220 * return timestamp on success (key copied). 235 * return 1 on success (key copied).
221 */ 236 */
222uint64_t onion_getfriend_DHT_pubkey(const Onion_Client *onion_c, int friend_num, uint8_t *dht_key); 237unsigned int onion_getfriend_DHT_pubkey(const Onion_Client *onion_c, int friend_num, uint8_t *dht_key);
223 238
224#define ONION_DATA_IN_RESPONSE_MIN_SIZE (crypto_box_PUBLICKEYBYTES + crypto_box_MACBYTES) 239#define ONION_DATA_IN_RESPONSE_MIN_SIZE (crypto_box_PUBLICKEYBYTES + crypto_box_MACBYTES)
225#define ONION_CLIENT_MAX_DATA_SIZE (MAX_DATA_REQUEST_SIZE - ONION_DATA_IN_RESPONSE_MIN_SIZE) 240#define ONION_CLIENT_MAX_DATA_SIZE (MAX_DATA_REQUEST_SIZE - ONION_DATA_IN_RESPONSE_MIN_SIZE)
diff --git a/toxcore/tox.c b/toxcore/tox.c
index a0873a4c..19e1c0a4 100644
--- a/toxcore/tox.c
+++ b/toxcore/tox.c
@@ -26,6 +26,7 @@
26#endif 26#endif
27 27
28#include "Messenger.h" 28#include "Messenger.h"
29#include "group.h"
29#include "logger.h" 30#include "logger.h"
30 31
31#define __TOX_DEFINED__ 32#define __TOX_DEFINED__
@@ -544,13 +545,15 @@ int tox_send_lossless_packet(const Tox *tox, int32_t friendnumber, const uint8_t
544 545
545/* Set the callback for group invites. 546/* Set the callback for group invites.
546 * 547 *
547 * Function(Tox *tox, int32_t friendnumber, uint8_t *group_public_key, void *userdata) 548 * Function(Tox *tox, int32_t friendnumber, uint8_t *data, uint16_t length, void *userdata)
549 *
550 * data of length is what needs to be passed to join_groupchat().
548 */ 551 */
549void tox_callback_group_invite(Tox *tox, void (*function)(Messenger *tox, int32_t, const uint8_t *, void *), 552void tox_callback_group_invite(Tox *tox, void (*function)(Messenger *tox, int32_t, const uint8_t *, uint16_t, void *),
550 void *userdata) 553 void *userdata)
551{ 554{
552 Messenger *m = tox; 555 Messenger *m = tox;
553 m_callback_group_invite(m, function, userdata); 556 g_callback_group_invite(m->group_chat_object, function, userdata);
554} 557}
555 558
556/* Set the callback for group messages. 559/* Set the callback for group messages.
@@ -561,7 +564,7 @@ void tox_callback_group_message(Tox *tox, void (*function)(Messenger *tox, int,
561 void *userdata) 564 void *userdata)
562{ 565{
563 Messenger *m = tox; 566 Messenger *m = tox;
564 m_callback_group_message(m, function, userdata); 567 g_callback_group_message(m->group_chat_object, function, userdata);
565} 568}
566 569
567/* Set the callback for group actions. 570/* Set the callback for group actions.
@@ -572,7 +575,7 @@ void tox_callback_group_action(Tox *tox, void (*function)(Messenger *tox, int, i
572 void *userdata) 575 void *userdata)
573{ 576{
574 Messenger *m = tox; 577 Messenger *m = tox;
575 m_callback_group_action(m, function, userdata); 578 //m_callback_group_action(m, function, userdata);
576} 579}
577 580
578/* Set callback function for peer name list changes. 581/* Set callback function for peer name list changes.
@@ -583,7 +586,7 @@ void tox_callback_group_action(Tox *tox, void (*function)(Messenger *tox, int, i
583void tox_callback_group_namelist_change(Tox *tox, void (*function)(Tox *tox, int, int, uint8_t, void *), void *userdata) 586void tox_callback_group_namelist_change(Tox *tox, void (*function)(Tox *tox, int, int, uint8_t, void *), void *userdata)
584{ 587{
585 Messenger *m = tox; 588 Messenger *m = tox;
586 m_callback_group_namelistchange(m, function, userdata); 589 //m_callback_group_namelistchange(m, function, userdata);
587} 590}
588 591
589/* Creates a new groupchat and puts it in the chats array. 592/* Creates a new groupchat and puts it in the chats array.
@@ -594,8 +597,9 @@ void tox_callback_group_namelist_change(Tox *tox, void (*function)(Tox *tox, int
594int tox_add_groupchat(Tox *tox) 597int tox_add_groupchat(Tox *tox)
595{ 598{
596 Messenger *m = tox; 599 Messenger *m = tox;
597 return add_groupchat(m); 600 return add_groupchat(m->group_chat_object);
598} 601}
602
599/* Delete a groupchat from the chats array. 603/* Delete a groupchat from the chats array.
600 * 604 *
601 * return 0 on success. 605 * return 0 on success.
@@ -604,7 +608,7 @@ int tox_add_groupchat(Tox *tox)
604int tox_del_groupchat(Tox *tox, int groupnumber) 608int tox_del_groupchat(Tox *tox, int groupnumber)
605{ 609{
606 Messenger *m = tox; 610 Messenger *m = tox;
607 return del_groupchat(m, groupnumber); 611 return del_groupchat(m->group_chat_object, groupnumber);
608} 612}
609 613
610/* Copy the name of peernumber who is in groupnumber to name. 614/* Copy the name of peernumber who is in groupnumber to name.
@@ -616,8 +620,10 @@ int tox_del_groupchat(Tox *tox, int groupnumber)
616int tox_group_peername(const Tox *tox, int groupnumber, int peernumber, uint8_t *name) 620int tox_group_peername(const Tox *tox, int groupnumber, int peernumber, uint8_t *name)
617{ 621{
618 const Messenger *m = tox; 622 const Messenger *m = tox;
619 return m_group_peername(m, groupnumber, peernumber, name); 623 //return m_group_peername(m, groupnumber, peernumber, name);
624 return -1;
620} 625}
626
621/* invite friendnumber to groupnumber 627/* invite friendnumber to groupnumber
622 * return 0 on success 628 * return 0 on success
623 * return -1 on failure 629 * return -1 on failure
@@ -625,37 +631,40 @@ int tox_group_peername(const Tox *tox, int groupnumber, int peernumber, uint8_t
625int tox_invite_friend(Tox *tox, int32_t friendnumber, int groupnumber) 631int tox_invite_friend(Tox *tox, int32_t friendnumber, int groupnumber)
626{ 632{
627 Messenger *m = tox; 633 Messenger *m = tox;
628 return invite_friend(m, friendnumber, groupnumber); 634 return invite_friend(m->group_chat_object, friendnumber, groupnumber);
629} 635}
630/* Join a group (you need to have been invited first.) 636
637/* Join a group (you need to have been invited first.) using data of length obtained
638 * in the group invite callback.
631 * 639 *
632 * returns group number on success 640 * returns group number on success
633 * returns -1 on failure. 641 * returns -1 on failure.
634 */ 642 */
635int tox_join_groupchat(Tox *tox, int32_t friendnumber, const uint8_t *friend_group_public_key) 643int tox_join_groupchat(Tox *tox, int32_t friendnumber, const uint8_t *data, uint16_t length)
636{ 644{
637 Messenger *m = tox; 645 Messenger *m = tox;
638 return join_groupchat(m, friendnumber, friend_group_public_key); 646 return join_groupchat(m->group_chat_object, friendnumber, data, length);
639} 647}
640 648
641/* send a group message 649/* send a group message
642 * return 0 on success 650 * return 0 on success
643 * return -1 on failure 651 * return -1 on failure
644 */ 652 */
645int tox_group_message_send(Tox *tox, int groupnumber, const uint8_t *message, uint32_t length) 653int tox_group_message_send(Tox *tox, int groupnumber, const uint8_t *message, uint16_t length)
646{ 654{
647 Messenger *m = tox; 655 Messenger *m = tox;
648 return group_message_send(m, groupnumber, message, length); 656 return group_message_send(m->group_chat_object, groupnumber, message, length);
649} 657}
650 658
651/* send a group action 659/* send a group action
652 * return 0 on success 660 * return 0 on success
653 * return -1 on failure 661 * return -1 on failure
654 */ 662 */
655int tox_group_action_send(Tox *tox, int groupnumber, const uint8_t *action, uint32_t length) 663int tox_group_action_send(Tox *tox, int groupnumber, const uint8_t *action, uint16_t length)
656{ 664{
657 Messenger *m = tox; 665 Messenger *m = tox;
658 return group_action_send(m, groupnumber, action, length); 666 //return group_action_send(m, groupnumber, action, length);
667 return -1;
659} 668}
660 669
661/* Return the number of peers in the group chat on success. 670/* Return the number of peers in the group chat on success.
@@ -664,7 +673,8 @@ int tox_group_action_send(Tox *tox, int groupnumber, const uint8_t *action, uint
664int tox_group_number_peers(const Tox *tox, int groupnumber) 673int tox_group_number_peers(const Tox *tox, int groupnumber)
665{ 674{
666 const Messenger *m = tox; 675 const Messenger *m = tox;
667 return group_number_peers(m, groupnumber); 676 //return group_number_peers(m, groupnumber);
677 return -1;
668} 678}
669 679
670/* List all the peers in the group chat. 680/* List all the peers in the group chat.
@@ -681,7 +691,8 @@ int tox_group_get_names(const Tox *tox, int groupnumber, uint8_t names[][TOX_MAX
681 uint16_t length) 691 uint16_t length)
682{ 692{
683 const Messenger *m = tox; 693 const Messenger *m = tox;
684 return group_names(m, groupnumber, names, lengths, length); 694 //return group_names(m, groupnumber, names, lengths, length);
695 return -1;
685} 696}
686 697
687/* Return the number of chats in the instance m. 698/* Return the number of chats in the instance m.
@@ -690,7 +701,8 @@ int tox_group_get_names(const Tox *tox, int groupnumber, uint8_t names[][TOX_MAX
690uint32_t tox_count_chatlist(const Tox *tox) 701uint32_t tox_count_chatlist(const Tox *tox)
691{ 702{
692 const Messenger *m = tox; 703 const Messenger *m = tox;
693 return count_chatlist(m); 704 //return count_chatlist(m);
705 return 0;
694} 706}
695 707
696/* Copy a list of valid chat IDs into the array out_list. 708/* Copy a list of valid chat IDs into the array out_list.
@@ -701,7 +713,8 @@ uint32_t tox_count_chatlist(const Tox *tox)
701uint32_t tox_get_chatlist(const Tox *tox, int *out_list, uint32_t list_size) 713uint32_t tox_get_chatlist(const Tox *tox, int *out_list, uint32_t list_size)
702{ 714{
703 const Messenger *m = tox; 715 const Messenger *m = tox;
704 return copy_chatlist(m, out_list, list_size); 716 //return copy_chatlist(m, out_list, list_size);
717 return 0;
705} 718}
706 719
707 720
@@ -953,7 +966,14 @@ Tox *tox_new(Tox_Options *options)
953 } 966 }
954 } 967 }
955 968
956 return new_messenger(&m_options); 969 Messenger *m = new_messenger(&m_options);
970
971 if (!new_groupchats(m)) {
972 kill_messenger(m);
973 return NULL;
974 }
975
976 return m;
957} 977}
958 978
959/* Run this before closing shop. 979/* Run this before closing shop.
@@ -962,6 +982,7 @@ Tox *tox_new(Tox_Options *options)
962void tox_kill(Tox *tox) 982void tox_kill(Tox *tox)
963{ 983{
964 Messenger *m = tox; 984 Messenger *m = tox;
985 kill_groupchats(m->group_chat_object);
965 kill_messenger(m); 986 kill_messenger(m);
966} 987}
967 988
diff --git a/toxcore/tox.h b/toxcore/tox.h
index af6f282c..ccb5a83e 100644
--- a/toxcore/tox.h
+++ b/toxcore/tox.h
@@ -419,9 +419,12 @@ int tox_send_lossless_packet(const Tox *tox, int32_t friendnumber, const uint8_t
419 419
420/* Set the callback for group invites. 420/* Set the callback for group invites.
421 * 421 *
422 * Function(Tox *tox, int friendnumber, uint8_t *group_public_key, void *userdata) 422 * Function(Tox *tox, int32_t friendnumber, uint8_t *data, uint16_t length, void *userdata)
423 *
424 * data of length is what needs to be passed to join_groupchat().
423 */ 425 */
424void tox_callback_group_invite(Tox *tox, void (*function)(Tox *tox, int32_t, const uint8_t *, void *), void *userdata); 426void tox_callback_group_invite(Tox *tox, void (*function)(Tox *tox, int32_t, const uint8_t *, uint16_t, void *),
427 void *userdata);
425 428
426/* Set the callback for group messages. 429/* Set the callback for group messages.
427 * 430 *
@@ -479,24 +482,25 @@ int tox_group_peername(const Tox *tox, int groupnumber, int peernumber, uint8_t
479 */ 482 */
480int tox_invite_friend(Tox *tox, int32_t friendnumber, int groupnumber); 483int tox_invite_friend(Tox *tox, int32_t friendnumber, int groupnumber);
481 484
482/* Join a group (you need to have been invited first.) 485/* Join a group (you need to have been invited first.) using data of length obtained
486 * in the group invite callback.
483 * 487 *
484 * returns group number on success 488 * returns group number on success
485 * returns -1 on failure. 489 * returns -1 on failure.
486 */ 490 */
487int tox_join_groupchat(Tox *tox, int32_t friendnumber, const uint8_t *friend_group_public_key); 491int tox_join_groupchat(Tox *tox, int32_t friendnumber, const uint8_t *data, uint16_t length);
488 492
489/* send a group message 493/* send a group message
490 * return 0 on success 494 * return 0 on success
491 * return -1 on failure 495 * return -1 on failure
492 */ 496 */
493int tox_group_message_send(Tox *tox, int groupnumber, const uint8_t *message, uint32_t length); 497int tox_group_message_send(Tox *tox, int groupnumber, const uint8_t *message, uint16_t length);
494 498
495/* send a group action 499/* send a group action
496 * return 0 on success 500 * return 0 on success
497 * return -1 on failure 501 * return -1 on failure
498 */ 502 */
499int tox_group_action_send(Tox *tox, int groupnumber, const uint8_t *action, uint32_t length); 503int tox_group_action_send(Tox *tox, int groupnumber, const uint8_t *action, uint16_t length);
500 504
501/* Return the number of peers in the group chat on success. 505/* Return the number of peers in the group chat on success.
502 * return -1 on failure 506 * return -1 on failure
@@ -539,8 +543,8 @@ uint32_t tox_get_chatlist(const Tox *tox, int *out_list, uint32_t list_size);
539 * function(Tox *tox, int32_t friendnumber, uint8_t format, uint8_t *hash, void *userdata) 543 * function(Tox *tox, int32_t friendnumber, uint8_t format, uint8_t *hash, void *userdata)
540 * 544 *
541 * where 'format' is the avatar image format (see TOX_AVATAR_FORMAT) and 'hash' is the hash of 545 * where 'format' is the avatar image format (see TOX_AVATAR_FORMAT) and 'hash' is the hash of
542 * the avatar data for caching purposes and it is exactly TOX_AVATAR_HASH_LENGTH long. If the 546 * the avatar data for caching purposes and it is exactly TOX_HASH_LENGTH long. If the image
543 * image format is NONE, the hash is zeroed. 547 * format is NONE, the hash is zeroed.
544 * 548 *
545 */ 549 */
546void tox_callback_avatar_info(Tox *tox, void (*function)(Tox *tox, int32_t, uint8_t, uint8_t *, void *), 550void tox_callback_avatar_info(Tox *tox, void (*function)(Tox *tox, int32_t, uint8_t, uint8_t *, void *),
@@ -556,12 +560,12 @@ void tox_callback_avatar_info(Tox *tox, void (*function)(Tox *tox, int32_t, uint
556 * 560 *
557 * where 'format' is the avatar image format (see TOX_AVATAR_FORMAT); 'hash' is the 561 * where 'format' is the avatar image format (see TOX_AVATAR_FORMAT); 'hash' is the
558 * locally-calculated cryptographic hash of the avatar data and it is exactly 562 * locally-calculated cryptographic hash of the avatar data and it is exactly
559 * TOX_AVATAR_HASH_LENGTH long; 'data' is the avatar image data and 'datalen' is the length 563 * TOX_HASH_LENGTH long; 'data' is the avatar image data and 'datalen' is the length
560 * of such data. 564 * of such data.
561 * 565 *
562 * If format is NONE, 'data' is NULL, 'datalen' is zero, and the hash is zeroed. The hash is 566 * If format is NONE, 'data' is NULL, 'datalen' is zero, and the hash is zeroed. The hash is
563 * always validated locally with the function tox_avatar_hash and ensured to match the image 567 * always validated locally with the function tox_hash and ensured to match the image data,
564 * data, so this value can be safely used to compare with cached avatars. 568 * so this value can be safely used to compare with cached avatars.
565 * 569 *
566 * WARNING: users MUST treat all avatar image data received from another peer as untrusted and 570 * WARNING: users MUST treat all avatar image data received from another peer as untrusted and
567 * potentially malicious. The library only ensures that the data which arrived is the same the 571 * potentially malicious. The library only ensures that the data which arrived is the same the
@@ -605,7 +609,7 @@ int tox_unset_avatar(Tox *tox);
605 * buf - destination buffer to the image data. Must have at least 'maxlen' bytes; 609 * buf - destination buffer to the image data. Must have at least 'maxlen' bytes;
606 * length - destination pointer to the image data length; 610 * length - destination pointer to the image data length;
607 * maxlen - length of the destination buffer 'buf'; 611 * maxlen - length of the destination buffer 'buf';
608 * hash - destination pointer to the avatar hash (it must be exactly TOX_AVATAR_HASH_LENGTH bytes long). 612 * hash - destination pointer to the avatar hash (it must be exactly TOX_HASH_LENGTH bytes long).
609 * 613 *
610 * returns 0 on success; 614 * returns 0 on success;
611 * returns -1 on failure. 615 * returns -1 on failure.
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-15 21:52:48 +0000