Squashed 'external/toxcore/c-toxcore/' content from commit 67badf69

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: 67badf69416a74e74f6d7eb51dd96f37282b8455

toxcore/events/friend_lossless_packet.c

@@ -0,0 +1,233 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright © 2022 The TokTok team.
+ */
+
+#include "events_alloc.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../bin_pack.h"
+#include "../bin_unpack.h"
+#include "../ccompat.h"
+#include "../tox.h"
+#include "../tox_events.h"
+
+
+/*****************************************************
+ *
+ * :: struct and accessors
+ *
+ *****************************************************/
+
+
+struct Tox_Event_Friend_Lossless_Packet {
+    uint32_t friend_number;
+    uint8_t *data;
+    uint32_t data_length;
+};
+
+non_null()
+static void tox_event_friend_lossless_packet_construct(Tox_Event_Friend_Lossless_Packet *friend_lossless_packet)
+{
+    *friend_lossless_packet = (Tox_Event_Friend_Lossless_Packet) {
+        0
+    };
+}
+non_null()
+static void tox_event_friend_lossless_packet_destruct(Tox_Event_Friend_Lossless_Packet *friend_lossless_packet)
+{
+    free(friend_lossless_packet->data);
+}
+
+non_null()
+static void tox_event_friend_lossless_packet_set_friend_number(Tox_Event_Friend_Lossless_Packet *friend_lossless_packet,
+        uint32_t friend_number)
+{
+    assert(friend_lossless_packet != nullptr);
+    friend_lossless_packet->friend_number = friend_number;
+}
+uint32_t tox_event_friend_lossless_packet_get_friend_number(const Tox_Event_Friend_Lossless_Packet
+        *friend_lossless_packet)
+{
+    assert(friend_lossless_packet != nullptr);
+    return friend_lossless_packet->friend_number;
+}
+
+non_null()
+static bool tox_event_friend_lossless_packet_set_data(Tox_Event_Friend_Lossless_Packet *friend_lossless_packet,
+        const uint8_t *data, uint32_t data_length)
+{
+    assert(friend_lossless_packet != nullptr);
+
+    if (friend_lossless_packet->data != nullptr) {
+        free(friend_lossless_packet->data);
+        friend_lossless_packet->data = nullptr;
+        friend_lossless_packet->data_length = 0;
+    }
+
+    friend_lossless_packet->data = (uint8_t *)malloc(data_length);
+
+    if (friend_lossless_packet->data == nullptr) {
+        return false;
+    }
+
+    memcpy(friend_lossless_packet->data, data, data_length);
+    friend_lossless_packet->data_length = data_length;
+    return true;
+}
+uint32_t tox_event_friend_lossless_packet_get_data_length(const Tox_Event_Friend_Lossless_Packet *friend_lossless_packet)
+{
+    assert(friend_lossless_packet != nullptr);
+    return friend_lossless_packet->data_length;
+}
+const uint8_t *tox_event_friend_lossless_packet_get_data(const Tox_Event_Friend_Lossless_Packet *friend_lossless_packet)
+{
+    assert(friend_lossless_packet != nullptr);
+    return friend_lossless_packet->data;
+}
+
+non_null()
+static bool tox_event_friend_lossless_packet_pack(
+    const Tox_Event_Friend_Lossless_Packet *event, Bin_Pack *bp)
+{
+    assert(event != nullptr);
+    return bin_pack_array(bp, 2)
+           && bin_pack_u32(bp, TOX_EVENT_FRIEND_LOSSLESS_PACKET)
+           && bin_pack_array(bp, 2)
+           && bin_pack_u32(bp, event->friend_number)
+           && bin_pack_bin(bp, event->data, event->data_length);
+}
+
+non_null()
+static bool tox_event_friend_lossless_packet_unpack(
+    Tox_Event_Friend_Lossless_Packet *event, Bin_Unpack *bu)
+{
+    assert(event != nullptr);
+    if (!bin_unpack_array_fixed(bu, 2)) {
+        return false;
+    }
+
+    return bin_unpack_u32(bu, &event->friend_number)
+           && bin_unpack_bin(bu, &event->data, &event->data_length);
+}
+
+
+/*****************************************************
+ *
+ * :: add/clear/get
+ *
+ *****************************************************/
+
+
+non_null()
+static Tox_Event_Friend_Lossless_Packet *tox_events_add_friend_lossless_packet(Tox_Events *events)
+{
+    if (events->friend_lossless_packet_size == UINT32_MAX) {
+        return nullptr;
+    }
+
+    if (events->friend_lossless_packet_size == events->friend_lossless_packet_capacity) {
+        const uint32_t new_friend_lossless_packet_capacity = events->friend_lossless_packet_capacity * 2 + 1;
+        Tox_Event_Friend_Lossless_Packet *new_friend_lossless_packet = (Tox_Event_Friend_Lossless_Packet *)realloc(
+                    events->friend_lossless_packet, new_friend_lossless_packet_capacity * sizeof(Tox_Event_Friend_Lossless_Packet));
+
+        if (new_friend_lossless_packet == nullptr) {
+            return nullptr;
+        }
+
+        events->friend_lossless_packet = new_friend_lossless_packet;
+        events->friend_lossless_packet_capacity = new_friend_lossless_packet_capacity;
+    }
+
+    Tox_Event_Friend_Lossless_Packet *const friend_lossless_packet =
+        &events->friend_lossless_packet[events->friend_lossless_packet_size];
+    tox_event_friend_lossless_packet_construct(friend_lossless_packet);
+    ++events->friend_lossless_packet_size;
+    return friend_lossless_packet;
+}
+
+void tox_events_clear_friend_lossless_packet(Tox_Events *events)
+{
+    if (events == nullptr) {
+        return;
+    }
+
+    for (uint32_t i = 0; i < events->friend_lossless_packet_size; ++i) {
+        tox_event_friend_lossless_packet_destruct(&events->friend_lossless_packet[i]);
+    }
+
+    free(events->friend_lossless_packet);
+    events->friend_lossless_packet = nullptr;
+    events->friend_lossless_packet_size = 0;
+    events->friend_lossless_packet_capacity = 0;
+}
+
+uint32_t tox_events_get_friend_lossless_packet_size(const Tox_Events *events)
+{
+    if (events == nullptr) {
+        return 0;
+    }
+
+    return events->friend_lossless_packet_size;
+}
+
+const Tox_Event_Friend_Lossless_Packet *tox_events_get_friend_lossless_packet(const Tox_Events *events, uint32_t index)
+{
+    assert(index < events->friend_lossless_packet_size);
+    assert(events->friend_lossless_packet != nullptr);
+    return &events->friend_lossless_packet[index];
+}
+
+bool tox_events_pack_friend_lossless_packet(const Tox_Events *events, Bin_Pack *bp)
+{
+    const uint32_t size = tox_events_get_friend_lossless_packet_size(events);
+
+    for (uint32_t i = 0; i < size; ++i) {
+        if (!tox_event_friend_lossless_packet_pack(tox_events_get_friend_lossless_packet(events, i), bp)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool tox_events_unpack_friend_lossless_packet(Tox_Events *events, Bin_Unpack *bu)
+{
+    Tox_Event_Friend_Lossless_Packet *event = tox_events_add_friend_lossless_packet(events);
+
+    if (event == nullptr) {
+        return false;
+    }
+
+    return tox_event_friend_lossless_packet_unpack(event, bu);
+}
+
+
+/*****************************************************
+ *
+ * :: event handler
+ *
+ *****************************************************/
+
+
+void tox_events_handle_friend_lossless_packet(Tox *tox, uint32_t friend_number, const uint8_t *data, size_t length,
+        void *user_data)
+{
+    Tox_Events_State *state = tox_events_alloc(user_data);
+    assert(state != nullptr);
+
+    if (state->events == nullptr) {
+        return;
+    }
+
+    Tox_Event_Friend_Lossless_Packet *friend_lossless_packet = tox_events_add_friend_lossless_packet(state->events);
+
+    if (friend_lossless_packet == nullptr) {
+        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;
+        return;
+    }
+
+    tox_event_friend_lossless_packet_set_friend_number(friend_lossless_packet, friend_number);
+    tox_event_friend_lossless_packet_set_data(friend_lossless_packet, data, length);
+}