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

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

toxcore/events/file_chunk_request.c

@@ -0,0 +1,243 @@
+/* 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_File_Chunk_Request {
+    uint32_t friend_number;
+    uint32_t file_number;
+    uint64_t position;
+    uint16_t length;
+};
+
+non_null()
+static void tox_event_file_chunk_request_construct(Tox_Event_File_Chunk_Request *file_chunk_request)
+{
+    *file_chunk_request = (Tox_Event_File_Chunk_Request) {
+        0
+    };
+}
+non_null()
+static void tox_event_file_chunk_request_destruct(Tox_Event_File_Chunk_Request *file_chunk_request)
+{
+    return;
+}
+
+non_null()
+static void tox_event_file_chunk_request_set_friend_number(Tox_Event_File_Chunk_Request *file_chunk_request,
+        uint32_t friend_number)
+{
+    assert(file_chunk_request != nullptr);
+    file_chunk_request->friend_number = friend_number;
+}
+uint32_t tox_event_file_chunk_request_get_friend_number(const Tox_Event_File_Chunk_Request *file_chunk_request)
+{
+    assert(file_chunk_request != nullptr);
+    return file_chunk_request->friend_number;
+}
+
+non_null()
+static void tox_event_file_chunk_request_set_file_number(Tox_Event_File_Chunk_Request *file_chunk_request,
+        uint32_t file_number)
+{
+    assert(file_chunk_request != nullptr);
+    file_chunk_request->file_number = file_number;
+}
+uint32_t tox_event_file_chunk_request_get_file_number(const Tox_Event_File_Chunk_Request *file_chunk_request)
+{
+    assert(file_chunk_request != nullptr);
+    return file_chunk_request->file_number;
+}
+
+non_null()
+static void tox_event_file_chunk_request_set_position(Tox_Event_File_Chunk_Request *file_chunk_request,
+        uint64_t position)
+{
+    assert(file_chunk_request != nullptr);
+    file_chunk_request->position = position;
+}
+uint64_t tox_event_file_chunk_request_get_position(const Tox_Event_File_Chunk_Request *file_chunk_request)
+{
+    assert(file_chunk_request != nullptr);
+    return file_chunk_request->position;
+}
+
+non_null()
+static void tox_event_file_chunk_request_set_length(Tox_Event_File_Chunk_Request *file_chunk_request, uint16_t length)
+{
+    assert(file_chunk_request != nullptr);
+    file_chunk_request->length = length;
+}
+uint16_t tox_event_file_chunk_request_get_length(const Tox_Event_File_Chunk_Request *file_chunk_request)
+{
+    assert(file_chunk_request != nullptr);
+    return file_chunk_request->length;
+}
+
+non_null()
+static bool tox_event_file_chunk_request_pack(
+    const Tox_Event_File_Chunk_Request *event, Bin_Pack *bp)
+{
+    assert(event != nullptr);
+    return bin_pack_array(bp, 2)
+           && bin_pack_u32(bp, TOX_EVENT_FILE_CHUNK_REQUEST)
+           && bin_pack_array(bp, 4)
+           && bin_pack_u32(bp, event->friend_number)
+           && bin_pack_u32(bp, event->file_number)
+           && bin_pack_u64(bp, event->position)
+           && bin_pack_u16(bp, event->length);
+}
+
+non_null()
+static bool tox_event_file_chunk_request_unpack(
+    Tox_Event_File_Chunk_Request *event, Bin_Unpack *bu)
+{
+    assert(event != nullptr);
+    if (!bin_unpack_array_fixed(bu, 4)) {
+        return false;
+    }
+
+    return bin_unpack_u32(bu, &event->friend_number)
+           && bin_unpack_u32(bu, &event->file_number)
+           && bin_unpack_u64(bu, &event->position)
+           && bin_unpack_u16(bu, &event->length);
+}
+
+
+/*****************************************************
+ *
+ * :: add/clear/get
+ *
+ *****************************************************/
+
+
+non_null()
+static Tox_Event_File_Chunk_Request *tox_events_add_file_chunk_request(Tox_Events *events)
+{
+    if (events->file_chunk_request_size == UINT32_MAX) {
+        return nullptr;
+    }
+
+    if (events->file_chunk_request_size == events->file_chunk_request_capacity) {
+        const uint32_t new_file_chunk_request_capacity = events->file_chunk_request_capacity * 2 + 1;
+        Tox_Event_File_Chunk_Request *new_file_chunk_request = (Tox_Event_File_Chunk_Request *)realloc(
+                    events->file_chunk_request, new_file_chunk_request_capacity * sizeof(Tox_Event_File_Chunk_Request));
+
+        if (new_file_chunk_request == nullptr) {
+            return nullptr;
+        }
+
+        events->file_chunk_request = new_file_chunk_request;
+        events->file_chunk_request_capacity = new_file_chunk_request_capacity;
+    }
+
+    Tox_Event_File_Chunk_Request *const file_chunk_request = &events->file_chunk_request[events->file_chunk_request_size];
+    tox_event_file_chunk_request_construct(file_chunk_request);
+    ++events->file_chunk_request_size;
+    return file_chunk_request;
+}
+
+void tox_events_clear_file_chunk_request(Tox_Events *events)
+{
+    if (events == nullptr) {
+        return;
+    }
+
+    for (uint32_t i = 0; i < events->file_chunk_request_size; ++i) {
+        tox_event_file_chunk_request_destruct(&events->file_chunk_request[i]);
+    }
+
+    free(events->file_chunk_request);
+    events->file_chunk_request = nullptr;
+    events->file_chunk_request_size = 0;
+    events->file_chunk_request_capacity = 0;
+}
+
+uint32_t tox_events_get_file_chunk_request_size(const Tox_Events *events)
+{
+    if (events == nullptr) {
+        return 0;
+    }
+
+    return events->file_chunk_request_size;
+}
+
+const Tox_Event_File_Chunk_Request *tox_events_get_file_chunk_request(const Tox_Events *events, uint32_t index)
+{
+    assert(index < events->file_chunk_request_size);
+    assert(events->file_chunk_request != nullptr);
+    return &events->file_chunk_request[index];
+}
+
+bool tox_events_pack_file_chunk_request(const Tox_Events *events, Bin_Pack *bp)
+{
+    const uint32_t size = tox_events_get_file_chunk_request_size(events);
+
+    for (uint32_t i = 0; i < size; ++i) {
+        if (!tox_event_file_chunk_request_pack(tox_events_get_file_chunk_request(events, i), bp)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool tox_events_unpack_file_chunk_request(Tox_Events *events, Bin_Unpack *bu)
+{
+    Tox_Event_File_Chunk_Request *event = tox_events_add_file_chunk_request(events);
+
+    if (event == nullptr) {
+        return false;
+    }
+
+    return tox_event_file_chunk_request_unpack(event, bu);
+}
+
+
+/*****************************************************
+ *
+ * :: event handler
+ *
+ *****************************************************/
+
+
+void tox_events_handle_file_chunk_request(Tox *tox, uint32_t friend_number, uint32_t file_number, uint64_t position,
+        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_File_Chunk_Request *file_chunk_request = tox_events_add_file_chunk_request(state->events);
+
+    if (file_chunk_request == nullptr) {
+        state->error = TOX_ERR_EVENTS_ITERATE_MALLOC;
+        return;
+    }
+
+    tox_event_file_chunk_request_set_friend_number(file_chunk_request, friend_number);
+    tox_event_file_chunk_request_set_file_number(file_chunk_request, file_number);
+    tox_event_file_chunk_request_set_position(file_chunk_request, position);
+    tox_event_file_chunk_request_set_length(file_chunk_request, length);
+}