unpack

struct gg_login110_ok
{
    uint64_t unknown1;
    char *somehash;
    gg_uin_t uin;
    uint32_t server_time;
};

int gg_packet_login110_ok_unpack(char *packet, size_t length, struct gg_login110_ok &dst)
{
    gg_pbuff *pb = gg_pbuff_new(packet, length);
    if (!pb)
        return 0;

    gg_pbuff_get_uint64(pb, &dst->unknown1);
    gg_pbuff_get_str(pb, &dst->somehash);
    gg_pbuff_get_uin(pb, &dst->uin);
    gg_pbuff_get_uint32(pb, &dst->server_time);

    return gg_pbuff_cleanup(pb); // zwraca 1, jeżeli pb jest "valid", a jest valid, jeżeli typy się zgadzały
}

void gg_packet_login110_ok_cleanup(struct gg_login110_ok &pkt)
{
    free(pkt->somehash);
    pkt->somehash = NULL;
}

// inne metody do pobierania danych:
{
    (...)
    gg_pbuff_get_str_optional(pb, &dst->str, NULL);
    gg_pbuff_get_uint64_optional(pb, &dst->val, (uint64_t)-1);
    gg_pbuff_get_submessage(pb, &dst->sub, &gg_packet_submsg_unpack);
    gg_pbuff_get_array(pb, &dst->arr1, &dst->arr1_count, &gg_pbuff_get_uint32, sizeof(uint32_t));
    gg_pbuff_get_array(pb, &dst->arr2, &dst->arr2_count, &gg_packet_submsg_unpack, sizeof(gg_submsg_t));
    (...)
}