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Revert "solana/token_bridge: calculate diff from original mint" 

Revert submission 1325

Reason for revert: not supporting external mints
Reverted Changes:
I2bf59ecd3:solana/token_bridge: calculate diff from original ...
I598373740:solana/token_bridge: check balance and truncation
I67c7a1c7a:solana/token_bridge: test wrapped asset transfers

Change-Id: I655694508774e40a489b810d7b4f9c17824ab5a3
This commit is contained in:
David Paryente 2021-09-10 12:03:42 +00:00 committed by Hendrik Hofstadt
parent f24f86adf5
commit 698091b2b1
2 changed files with 10 additions and 18 deletions
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14
solana/modules/token_bridge/program/src/api/complete_transfer.rs
View File

@ -244,23 +244,19 @@ pub fn complete_wrapped(
let (_, is_external) =
derive_mint_for_token(ctx.program_id, accs.vaa.token_address, accs.vaa.token_chain);
// When dealing with external adopted mints, we check if the asset in question is larger than
// the mint in question. If it is, we truncate to the mints size. For example, sollet assets
// are truncated to 6 decimals, however Wormhole uses 8 and assumes wire-truncation to 8
// decimals.
let (amount, fee) = if is_external && accs.wrapped_meta.original_decimals > accs.mint.decimals {
let difference = 8u32.checked_sub(accs.mint.decimals.into()).unwrap();
let (amount, fee) = if is_external && accs.wrapped_meta.original_decimals > 6 {
// Sollet assets are truncated to 6 decimals, however Wormhole uses 8 and assumes
// wire-truncation to 8 decimals.
(
accs.vaa
.amount
.as_u64()
.checked_div(10u64.pow(difference.min(accs.wrapped_meta.original_decimals as u32 - 6)))
.checked_div(10u64.pow(2.min(accs.wrapped_meta.original_decimals as u32 - 6)))
.unwrap(),
accs.vaa
.fee
.as_u64()
.checked_div(10u64.pow(difference.min(accs.wrapped_meta.original_decimals as u32 - 6)))
.checked_div(10u64.pow(2.min(accs.wrapped_meta.original_decimals as u32 - 6)))
.unwrap(),
)
} else {

14
solana/modules/token_bridge/program/src/api/transfer.rs
View File

@ -336,19 +336,15 @@ pub fn transfer_wrapped(
accs.wrapped_meta.token_address,
accs.wrapped_meta.chain,
);
// When dealing with external adopted mints, we check if the asset in question is larger than
// the mint in question. If it is, we truncate to the mints size. For example, sollet assets
// are truncated to 6 decimals, however Wormhole uses 8 and assumes wire-truncation to 8
// decimals. Larger mints are unsupported.
let (amount, fee) = if is_external && accs.wrapped_meta.original_decimals > accs.mint.decimals {
let difference = 8u32.checked_sub(accs.mint.decimals.into()).unwrap();
let (amount, fee) = if is_external && accs.wrapped_meta.original_decimals > 6 {
// Sollet assets are truncated to 6 decimals, however Wormhole uses 8 and assumes
// wire-truncation to 8 decimals.
(
data.amount
.checked_mul(10u64.pow(difference.min(accs.wrapped_meta.original_decimals as u32 - 6)))
.checked_mul(10u64.pow(2.min(accs.wrapped_meta.original_decimals as u32 - 6)))
.unwrap(),
data.fee
.checked_mul(10u64.pow(difference.min(accs.wrapped_meta.original_decimals as u32 - 6)))
.checked_mul(10u64.pow(2.min(accs.wrapped_meta.original_decimals as u32 - 6)))
.unwrap(),
)
} else {