Cooldown mod spell effect

void Spell::EffectModifyCurrentSpellCooldown(SpellEffIndex effIndex)
{
    if (effectHandleMode != SPELL_EFFECT_HANDLE_HIT)
        return;

    if (m_caster->GetTypeId() != TYPEID_PLAYER)
        return;

    SpellInfo const* spellInfo = GetSpellInfo();
    flag96 spellMask = spellInfo->Effects[effIndex].SpellClassMask;
    int32 amount = spellInfo->Effects[effIndex].CalcValue();
    int32 ignoreSpellMask = spellInfo->Effects[effIndex].MiscValue;
    int32 ignoreSpellFamily = spellInfo->Effects[effIndex].MiscValueB;
    Player* player = m_caster->ToPlayer();
    SpellCooldowns const spellCDs = player->GetSpellCooldowns();

    for (SpellCooldowns::const_iterator itr = spellCDs.begin(); itr != spellCDs.end(); ++itr)
    {
        SpellInfo const* cdSpell = sSpellMgr->GetSpellInfo(itr->first);
        if (cdSpell && cdSpell->SpellFamilyName == spellInfo->SpellFamilyName && (cdSpell->SpellFamilyFlags & spellMask) && !ignoreSpellMask && !ignoreSpellFamily)
            player->ModifySpellCooldown(cdSpell->Id, amount);
        else if (cdSpell && cdSpell->SpellFamilyName == spellInfo->SpellFamilyName && ignoreSpellMask && !ignoreSpellFamily)
            player->ModifySpellCooldown(cdSpell->Id, amount);
        else if (cdSpell && ignoreSpellFamily)
            player->ModifySpellCooldown(cdSpell->Id, amount);
    }
}