contract-verifier-config

[markusberanger]

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;; Jettons discoverable smart contract

;; storage scheme
;; storage#_ total_supply:Coins admin_address:MsgAddress content:^Cell jetton_wallet_code:^Cell = Storage;

#include "imports/stdlib.fc";
#include "imports/params.fc";
#include "imports/constants.fc";
#include "imports/jetton-utils.fc";
#include "imports/op-codes.fc";
#include "imports/utils.fc";
#include "imports/discovery-params.fc";
#pragma version >=0.2.0;

(int, slice, cell, cell) load_data() inline {
slice ds = get_data().begin_parse();
return (
dsload_coins(), ;; total_supply
dsload_msg_addr(), ;; admin_address
dsload_ref(), ;; content
dsload_ref() ;; jetton_wallet_code
);
}

() save_data(int total_supply, slice admin_address, cell content, cell jetton_wallet_code) impure inline {
set_data(begin_cell()
.store_coins(total_supply)
.store_slice(admin_address)
.store_ref(content)
.store_ref(jetton_wallet_code)
.end_cell()
);
}

() mint_tokens(slice to_address, cell jetton_wallet_code, int amount, cell master_msg) impure {
cell state_init = calculate_jetton_wallet_state_init(to_address, my_address(), jetton_wallet_code);
slice to_wallet_address = calculate_jetton_wallet_address(state_init);
var msg = begin_cell()
.store_uint(0x18, 6)
.store_slice(to_wallet_address)
.store_coins(amount)
.store_uint(4 + 2 + 1, 1 + 4 + 4 + 64 + 32 + 1 + 1 + 1)
.store_ref(state_init)
.store_ref(master_msg);
send_raw_message(msg.end_cell(), 1); ;; pay transfer fees separately, revert on errors
}

() recv_internal(int msg_value, cell in_msg_full, slice in_msg_body) impure {
if (in_msg_body.slice_empty?()) { ;; ignore empty messages
return ();
}
slice cs = in_msg_full.begin_parse();
int flags = cs~load_uint(4);

if (flags & 1) { ;; ignore all bounced messages
    return ();
}
slice sender_address = cs~load_msg_addr();
cs~load_msg_addr(); ;; skip dst
cs~load_coins(); ;; skip value
cs~skip_bits(1); ;; skip extracurrency collection
cs~load_coins(); ;; skip ihr_fee
int fwd_fee = cs~load_coins(); ;; we use message fwd_fee for estimation of provide_wallet_address cost

int op = in_msg_body~load_uint(32);
int query_id = in_msg_body~load_uint(64);

(int total_supply, slice admin_address, cell content, cell jetton_wallet_code) = load_data();

if (op == op::mint()) {
    throw_unless(73, equal_slices(sender_address, admin_address));
    slice to_address = in_msg_body~load_msg_addr();
    int amount = in_msg_body~load_coins();
    cell master_msg = in_msg_body~load_ref();
    slice master_msg_cs = master_msg.begin_parse();
    master_msg_cs~skip_bits(32 + 64); ;; op + query_id
    int jetton_amount = master_msg_cs~load_coins();
    mint_tokens(to_address, jetton_wallet_code, amount, master_msg);
    save_data(total_supply + jetton_amount, admin_address, content, jetton_wallet_code);
    return ();
}

if (op == op::burn_notification()) {
    int jetton_amount = in_msg_body~load_coins();
    slice from_address = in_msg_body~load_msg_addr();
    throw_unless(74,
            equal_slices(calculate_user_jetton_wallet_address(from_address, my_address(), jetton_wallet_code), sender_address)
    );
    save_data(total_supply - jetton_amount, admin_address, content, jetton_wallet_code);
    slice response_address = in_msg_body~load_msg_addr();
    if (response_address.preload_uint(2) != 0) {
        var msg = begin_cell()
                .store_uint(0x10, 6) ;; nobounce - int_msg_info$0 ihr_disabled:Bool bounce:Bool bounced:Bool src:MsgAddress -> 011000
                .store_slice(response_address)
                .store_coins(0)
                .store_uint(0, 1 + 4 + 4 + 64 + 32 + 1 + 1)
                .store_uint(op::excesses(), 32)
                .store_uint(query_id, 64);
        send_raw_message(msg.end_cell(), 2 + 64);
    }
    return ();
}

if (op == op::provide_wallet_address()) {
    throw_unless(75, msg_value > fwd_fee + const::provide_address_gas_consumption());

    slice owner_address = in_msg_body~load_msg_addr();
    int include_address? = in_msg_body~load_uint(1);

    cell included_address = include_address?
            ? begin_cell().store_slice(owner_address).end_cell()
            : null();

    var msg = begin_cell()
            .store_uint(0x18, 6)
            .store_slice(sender_address)
            .store_coins(0)
            .store_uint(0, 1 + 4 + 4 + 64 + 32 + 1 + 1)
            .store_uint(op::take_wallet_address(), 32)
            .store_uint(query_id, 64);

    if (is_resolvable?(owner_address)) {
        msg = msg.store_slice(calculate_user_jetton_wallet_address(owner_address, my_address(), jetton_wallet_code));
    } else {
        msg = msg.store_uint(0, 2); ;; addr_none
    }
    send_raw_message(msg.store_maybe_ref(included_address).end_cell(), 64);
    return ();
}

if (op == 3) { ;; change admin
    throw_unless(73, equal_slices(sender_address, admin_address));
    slice new_admin_address = in_msg_body~load_msg_addr();
    save_data(total_supply, new_admin_address, content, jetton_wallet_code);
    return ();
}

if (op == 4) { ;; change content, delete this for immutable tokens
    throw_unless(73, equal_slices(sender_address, admin_address));
    save_data(total_supply, admin_address, in_msg_body~load_ref(), jetton_wallet_code);
    return ();
}

throw(0xffff);

}

(int, int, slice, cell, cell) get_jetton_data() method_id {
(int total_supply, slice admin_address, cell content, cell jetton_wallet_code) = load_data();
return (total_supply, -1, admin_address, content, jetton_wallet_code);
}

slice get_wallet_address(slice owner_address) method_id {
(int total_supply, slice admin_address, cell content, cell jetton_wallet_code) = load_data();
return calculate_user_jetton_wallet_address(owner_address, my_address(), jetton_wallet_code);
}