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Allow custom reference in #topup transactions #46

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Allow custom reference in #topup transactions #46

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1 change: 1 addition & 0 deletions func/common.fc
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,7 @@ const int err::invalid_auction_config = 223;

int mod(int x, int y) asm "MOD";
int equal_slices(slice a, slice b) asm "SDEQ";
int is_prefix_of(slice a, slice b) asm "SDPFX";
int builder_null?(builder b) asm "ISNULL";
builder store_builder(builder to, builder from) asm "STBR";

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4 changes: 2 additions & 2 deletions func/nft-collection.fc
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Expand Up @@ -39,8 +39,8 @@ _ unwrap_signed_cmd(slice signed_cmd, int public_key, int subwallet_id, int msg_

if (op == 0) { ;; regular money transfer
;; NB: it is not possible to recover any money transferred to this account
;; so we return back all transfers except ones with comment #topup in it
throw_unless(err::wrong_topup_comment, equal_slices(in_msg_body, "#topup") & (in_msg_body.slice_refs() == 0));
;; so we return back all transfers except ones with comment starting #topup in it
throw_unless(err::wrong_topup_comment, is_prefix_of("#topup", in_msg_body) & (in_msg_body.slice_refs() == 0));

return ();
}
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2 changes: 1 addition & 1 deletion func/nft-item.fc
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Expand Up @@ -216,7 +216,7 @@ cell change_dns_record(cell dns, slice in_msg_body) {
}

if (op == 0) {
int is_topup = equal_slices(in_msg_body, "#topup") & (in_msg_body.slice_refs() == 0);
int is_topup = is_prefix_of("#topup", in_msg_body) & (in_msg_body.slice_refs() == 0);
throw_unless(err::forbidden_topup, is_topup | equal_slices(sender_address, owner_address)); ;; only owner can fill-up balance, prevent coins lost right after the auction
;; if owner send bid right after auction he can restore it by transfer response message
return ();
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