Update libtox to 0.2.15

1 files changed, 97 insertions, 0 deletions

diff --git a/protocols/Tox/libtox/src/toxcore/TCP_common.h b/protocols/Tox/libtox/src/toxcore/TCP_common.h
new file mode 100644
index 0000000000..92c0a9a3d9
--- /dev/null
+++ b/protocols/Tox/libtox/src/toxcore/TCP_common.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright © 2016-2018 The TokTok team.
+ * Copyright © 2014 Tox project.
+ */
+
+#ifndef C_TOXCORE_TOXCORE_TCP_COMMON_H
+#define C_TOXCORE_TOXCORE_TCP_COMMON_H
+
+#include "crypto_core.h"
+#include "network.h"
+
+typedef struct TCP_Priority_List TCP_Priority_List;
+struct TCP_Priority_List {
+    TCP_Priority_List *next;
+    uint16_t size;
+    uint16_t sent;
+    uint8_t *data;
+};
+
+void wipe_priority_list(TCP_Priority_List *p);
+
+#define NUM_RESERVED_PORTS 16
+#define NUM_CLIENT_CONNECTIONS (256 - NUM_RESERVED_PORTS)
+
+#define TCP_PACKET_ROUTING_REQUEST  0
+#define TCP_PACKET_ROUTING_RESPONSE 1
+#define TCP_PACKET_CONNECTION_NOTIFICATION 2
+#define TCP_PACKET_DISCONNECT_NOTIFICATION 3
+#define TCP_PACKET_PING 4
+#define TCP_PACKET_PONG 5
+#define TCP_PACKET_OOB_SEND 6
+#define TCP_PACKET_OOB_RECV 7
+#define TCP_PACKET_ONION_REQUEST  8
+#define TCP_PACKET_ONION_RESPONSE 9
+
+#define TCP_HANDSHAKE_PLAIN_SIZE (CRYPTO_PUBLIC_KEY_SIZE + CRYPTO_NONCE_SIZE)
+#define TCP_SERVER_HANDSHAKE_SIZE (CRYPTO_NONCE_SIZE + TCP_HANDSHAKE_PLAIN_SIZE + CRYPTO_MAC_SIZE)
+#define TCP_CLIENT_HANDSHAKE_SIZE (CRYPTO_PUBLIC_KEY_SIZE + TCP_SERVER_HANDSHAKE_SIZE)
+#define TCP_MAX_OOB_DATA_LENGTH 1024
+
+/** frequency to ping connected nodes and timeout in seconds */
+#define TCP_PING_FREQUENCY 30
+#define TCP_PING_TIMEOUT 10
+
+#define MAX_PACKET_SIZE 2048
+
+typedef struct TCP_Connection {
+    Socket sock;
+    IP_Port ip_port;  // for debugging.
+    uint8_t sent_nonce[CRYPTO_NONCE_SIZE]; /* Nonce of sent packets. */
+    uint8_t shared_key[CRYPTO_SHARED_KEY_SIZE];
+    uint8_t last_packet[2 + MAX_PACKET_SIZE];
+    uint16_t last_packet_length;
+    uint16_t last_packet_sent;
+
+    TCP_Priority_List *priority_queue_start;
+    TCP_Priority_List *priority_queue_end;
+} TCP_Connection;
+
+/** return 0 if pending data was sent completely
+ * return -1 if it wasn't
+ */
+int send_pending_data_nonpriority(const Logger *logger, TCP_Connection *con);
+
+/** return 0 if pending data was sent completely
+ * return -1 if it wasn't
+ */
+int send_pending_data(const Logger *logger, TCP_Connection *con);
+
+/** return 0 on failure (only if calloc fails)
+ * return 1 on success
+ */
+bool add_priority(TCP_Connection *con, const uint8_t *packet, uint16_t size, uint16_t sent);
+
+/** return 1 on success.
+ * return 0 if could not send packet.
+ * return -1 on failure (connection must be killed).
+ */
+int write_packet_TCP_secure_connection(const Logger *logger, TCP_Connection *con, const uint8_t *data, uint16_t length,
+                                       bool priority);
+
+/** Read length bytes from socket.
+ *
+ * return length on success
+ * return -1 on failure/no data in buffer.
+ */
+int read_TCP_packet(const Logger *logger, Socket sock, uint8_t *data, uint16_t length, const IP_Port *ip_port);
+
+/** return length of received packet on success.
+ * return 0 if could not read any packet.
+ * return -1 on failure (connection must be killed).
+ */
+int read_packet_TCP_secure_connection(const Logger *logger, Socket sock, uint16_t *next_packet_length,
+                                      const uint8_t *shared_key, uint8_t *recv_nonce, uint8_t *data,
+                                      uint16_t max_len, const IP_Port *ip_port);
+
+#endif