C++ (Cpp) calculate_comp_value示例

示例#1

文件： group.c 项目： OhScee/toxcore

static int add_to_closest(Group_Chats *g_c, int groupnumber, const uint8_t *real_pk, const uint8_t *temp_pk)
{
    Group_c *g = get_group_c(g_c, groupnumber);

    if (!g)
        return -1;

    unsigned int i;
    unsigned int index = DESIRED_CLOSE_CONNECTIONS;

    for (i = 0; i < DESIRED_CLOSE_CONNECTIONS; ++i) {
        if (g->closest_peers[i].entry == 0) {
            index = i;
            break;
        }
    }

    if (index == DESIRED_CLOSE_CONNECTIONS) {
        uint16_t comp_val = calculate_comp_value(g->real_pk, real_pk);
        uint16_t comp_d = 0;

        for (i = 0; i < DESIRED_CLOSE_CONNECTIONS; ++i) {
            uint16_t comp = calculate_comp_value(g->real_pk, g->closest_peers[i].real_pk);

            if (comp > comp_val && comp > comp_d) {
                index = i;
                comp_d = comp;
            }
        }
    }

    if (index == DESIRED_CLOSE_CONNECTIONS) {
        return -1;
    }

    g->closest_peers[index].entry = 1;
    memcpy(g->closest_peers[index].real_pk, real_pk, crypto_box_PUBLICKEYBYTES);
    memcpy(g->closest_peers[index].temp_pk, temp_pk, crypto_box_PUBLICKEYBYTES);
    g->changed = 1;

    return 0;
}

示例#2

文件： group.c 项目： CharlyEtu/toxcore

static int add_to_closest(Group_Chats *g_c, int groupnumber, const uint8_t *real_pk, const uint8_t *temp_pk)
{
    Group_c *g = get_group_c(g_c, groupnumber);

    if (!g)
        return -1;

    if (memcmp(g->real_pk, real_pk, crypto_box_PUBLICKEYBYTES) == 0)
        return -1;

    unsigned int i;
    unsigned int index = DESIRED_CLOSE_CONNECTIONS;

    for (i = 0; i < DESIRED_CLOSE_CONNECTIONS; ++i) {
        if (g->closest_peers[i].entry && memcmp(real_pk, g->closest_peers[i].real_pk, crypto_box_PUBLICKEYBYTES) == 0) {
            return 0;
        }
    }

    for (i = 0; i < DESIRED_CLOSE_CONNECTIONS; ++i) {
        if (g->closest_peers[i].entry == 0) {
            index = i;
            break;
        }
    }

    if (index == DESIRED_CLOSE_CONNECTIONS) {
        uint16_t comp_val = calculate_comp_value(g->real_pk, real_pk);
        uint16_t comp_d = 0;

        for (i = 0; i < (DESIRED_CLOSE_CONNECTIONS / 2); ++i) {
            uint16_t comp;
            comp = calculate_comp_value(g->real_pk, g->closest_peers[i].real_pk);

            if (comp > comp_val && comp > comp_d) {
                index = i;
                comp_d = comp;
            }
        }

        comp_val = calculate_comp_value(real_pk, g->real_pk);

        for (i = (DESIRED_CLOSE_CONNECTIONS / 2); i < DESIRED_CLOSE_CONNECTIONS; ++i) {
            uint16_t comp = calculate_comp_value(g->closest_peers[i].real_pk, g->real_pk);

            if (comp > comp_val && comp > comp_d) {
                index = i;
                comp_d = comp;
            }
        }
    }

    if (index == DESIRED_CLOSE_CONNECTIONS) {
        return -1;
    }

    uint8_t old_real_pk[crypto_box_PUBLICKEYBYTES];
    uint8_t old_temp_pk[crypto_box_PUBLICKEYBYTES];
    uint8_t old = 0;

    if (g->closest_peers[index].entry) {
        memcpy(old_real_pk, g->closest_peers[index].real_pk, crypto_box_PUBLICKEYBYTES);
        memcpy(old_temp_pk, g->closest_peers[index].temp_pk, crypto_box_PUBLICKEYBYTES);
        old = 1;
    }

    g->closest_peers[index].entry = 1;
    memcpy(g->closest_peers[index].real_pk, real_pk, crypto_box_PUBLICKEYBYTES);
    memcpy(g->closest_peers[index].temp_pk, temp_pk, crypto_box_PUBLICKEYBYTES);

    if (old) {
        add_to_closest(g_c, groupnumber, old_real_pk, old_temp_pk);
    }

    if (!g->changed)
        g->changed = GROUPCHAT_CLOSEST_ADDED;

    return 0;
}