mirror of
https://github.com/librekeys/picoforge.git
synced 2026-07-28 08:01:19 -07:00
fix: tests and update crates to latest versions
This commit is contained in:
Suyog Tandel
+2
-1
@@ -29,4 +29,5 @@ src-svelte
|
||||
gpui-component
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||||
packaging
|
||||
.cargo-packager
|
||||
llm-texts
|
||||
llm-texts
|
||||
opencode.jsonc
|
||||
|
||||
Generated
+92
-19
@@ -15,11 +15,22 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b169f7a6d4742236a0a00c541b845991d0ac43e546831af1249753ab4c3aa3a0"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"cipher",
|
||||
"cipher 0.4.4",
|
||||
"cpufeatures 0.2.17",
|
||||
"zeroize",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "aes"
|
||||
version = "0.9.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f1fc76eaeac4c9164506c466d4ffdd8ec9d0c5bf57ee97177c4d8eceb3a0e138"
|
||||
dependencies = [
|
||||
"cipher 0.5.2",
|
||||
"cpubits",
|
||||
"cpufeatures 0.3.0",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "ahash"
|
||||
version = "0.8.12"
|
||||
@@ -644,6 +655,15 @@ dependencies = [
|
||||
"generic-array",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "block-padding"
|
||||
version = "0.4.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "710f1dd022ef4e93f8a438b4ba958de7f64308434fa6a87104481645cc30068b"
|
||||
dependencies = [
|
||||
"hybrid-array",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "block2"
|
||||
version = "0.6.2"
|
||||
@@ -758,7 +778,16 @@ version = "0.1.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "26b52a9543ae338f279b96b0b9fed9c8093744685043739079ce85cd58f289a6"
|
||||
dependencies = [
|
||||
"cipher",
|
||||
"cipher 0.4.4",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "cbc"
|
||||
version = "0.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ce2dc9ee5f88d11e0beb842c88b33c8a5cf0d1329c4b19494af42b07dbfe8896"
|
||||
dependencies = [
|
||||
"cipher 0.5.2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@@ -851,11 +880,21 @@ version = "0.4.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "773f3b9af64447d2ce9850330c473515014aa235e6a783b02db81ff39e4a3dad"
|
||||
dependencies = [
|
||||
"crypto-common",
|
||||
"inout",
|
||||
"crypto-common 0.1.7",
|
||||
"inout 0.1.4",
|
||||
"zeroize",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "cipher"
|
||||
version = "0.5.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e8cf2a2c93cd704877c0858356ed03480ff301ee950b43f1cbe4573b088bfa6c"
|
||||
dependencies = [
|
||||
"crypto-common 0.2.2",
|
||||
"inout 0.2.2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "clang-sys"
|
||||
version = "1.8.1"
|
||||
@@ -1165,6 +1204,12 @@ dependencies = [
|
||||
"unicode-segmentation",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "cpubits"
|
||||
version = "0.1.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "15b85f9c39137c3a891689859392b1bd49812121d0d61c9caf00d46ed5ce06ae"
|
||||
|
||||
[[package]]
|
||||
name = "cpufeatures"
|
||||
version = "0.2.17"
|
||||
@@ -1243,6 +1288,15 @@ dependencies = [
|
||||
"typenum",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "crypto-common"
|
||||
version = "0.2.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ce6e4c961d6cd6c9a86db418387425e8bdeaf05b3c8bc1411e6dca4c252f1453"
|
||||
dependencies = [
|
||||
"hybrid-array",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "ctor"
|
||||
version = "0.4.3"
|
||||
@@ -1319,7 +1373,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
|
||||
dependencies = [
|
||||
"block-buffer",
|
||||
"crypto-common",
|
||||
"crypto-common 0.1.7",
|
||||
"subtle",
|
||||
]
|
||||
|
||||
@@ -2655,6 +2709,15 @@ version = "2.3.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "135b12329e5e3ce057a9f972339ea52bc954fe1e9358ef27f95e89716fbc5424"
|
||||
|
||||
[[package]]
|
||||
name = "hybrid-array"
|
||||
version = "0.4.12"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9155a582abd142abc056962c29e3ce5ff2ad5469f4246b537ed42c5deba857da"
|
||||
dependencies = [
|
||||
"typenum",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "hyper"
|
||||
version = "1.10.1"
|
||||
@@ -2939,10 +3002,20 @@ version = "0.1.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "879f10e63c20629ecabbb64a8010319738c66a5cd0c29b02d63d272b03751d01"
|
||||
dependencies = [
|
||||
"block-padding",
|
||||
"block-padding 0.3.3",
|
||||
"generic-array",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "inout"
|
||||
version = "0.2.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4250ce6452e92010fdf7268ccc5d14faa80bb12fc741938534c58f16804e03c7"
|
||||
dependencies = [
|
||||
"block-padding 0.4.2",
|
||||
"hybrid-array",
|
||||
]
|
||||
|
||||
[[package]]
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||||
name = "instant"
|
||||
version = "0.1.13"
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||||
@@ -3414,9 +3487,9 @@ checksum = "88904434abc2901f197fe8cc55f0445e7ded921dba5911dad2e2b39b48e663c4"
|
||||
|
||||
[[package]]
|
||||
name = "memmap2"
|
||||
version = "0.9.10"
|
||||
version = "0.9.11"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "714098028fe011992e1c3962653c96b2d578c4b4bce9036e15ff220319b1e0e3"
|
||||
checksum = "d1219ed1b7f229ee7104d281dd01d6802fe28bb6e95d292942c4daacdeb798c0"
|
||||
dependencies = [
|
||||
"libc",
|
||||
]
|
||||
@@ -3915,14 +3988,14 @@ version = "0.5.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e3299dd401feaf1d45afd8fd1c0586f10fcfb22f244bb9afa942cec73503b89d"
|
||||
dependencies = [
|
||||
"aes",
|
||||
"aes 0.8.4",
|
||||
"ashpd 0.12.3",
|
||||
"async-fs",
|
||||
"async-io",
|
||||
"async-lock",
|
||||
"blocking",
|
||||
"cbc",
|
||||
"cipher",
|
||||
"cbc 0.1.2",
|
||||
"cipher 0.4.4",
|
||||
"digest",
|
||||
"endi",
|
||||
"futures-lite 2.6.1",
|
||||
@@ -4135,12 +4208,12 @@ checksum = "5be167a7af36ee22fe3115051bc51f6e6c7054c9348e28deb4f49bd6f705a315"
|
||||
name = "picoforge"
|
||||
version = "0.6.0"
|
||||
dependencies = [
|
||||
"aes",
|
||||
"aes 0.9.1",
|
||||
"anyhow",
|
||||
"base64",
|
||||
"bitflags 2.13.0",
|
||||
"byteorder",
|
||||
"cbc",
|
||||
"cbc 0.2.1",
|
||||
"directories",
|
||||
"gpui",
|
||||
"gpui-component",
|
||||
@@ -4415,9 +4488,9 @@ dependencies = [
|
||||
|
||||
[[package]]
|
||||
name = "quinn"
|
||||
version = "0.11.9"
|
||||
version = "0.11.11"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b9e20a958963c291dc322d98411f541009df2ced7b5a4f2bd52337638cfccf20"
|
||||
checksum = "0c1a41e437b6bbd489372cd4971de128e85c855f56c57f283d20ff016cf7c0a8"
|
||||
dependencies = [
|
||||
"bytes",
|
||||
"cfg_aliases",
|
||||
@@ -4435,9 +4508,9 @@ dependencies = [
|
||||
|
||||
[[package]]
|
||||
name = "quinn-proto"
|
||||
version = "0.11.14"
|
||||
version = "0.11.15"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "434b42fec591c96ef50e21e886936e66d3cc3f737104fdb9b737c40ffb94c098"
|
||||
checksum = "4fcb935c5bec503c2f0e306bdd3e58bb9029dcb14fa8d9ac76e3a5256ac0763e"
|
||||
dependencies = [
|
||||
"bytes",
|
||||
"getrandom 0.3.4",
|
||||
@@ -4948,9 +5021,9 @@ dependencies = [
|
||||
|
||||
[[package]]
|
||||
name = "rustls"
|
||||
version = "0.23.40"
|
||||
version = "0.23.41"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ef86cd5876211988985292b91c96a8f2d298df24e75989a43a3c73f2d4d8168b"
|
||||
checksum = "6b92b125634d9b795e7beca796cc790df15a7fb38323bf3196fda83292d06b1f"
|
||||
dependencies = [
|
||||
"once_cell",
|
||||
"ring",
|
||||
|
||||
+11
-11
@@ -15,19 +15,19 @@ log4rs = "1" # For logging to output (like s
|
||||
directories = "6" # For Applcation config/data dir handling
|
||||
|
||||
# For device management backend:
|
||||
pcsc = "2" # Standard Smart Card API (connect to the key)
|
||||
hex = "0.4" # For parsing VID/PID strings
|
||||
byteorder = "1.5" # Required for writing Big-Endian numbers (firmware requirement)
|
||||
thiserror = "2" # Makes custom error handling much easier
|
||||
anyhow = "1" # For easy error propagation
|
||||
hidapi = "2.6" # For fido2 interface operations but non-standard commands
|
||||
pcsc = "2" # Standard Smart Card API (connect to the key)
|
||||
hex = "0.4" # For parsing VID/PID strings
|
||||
byteorder = "1.5" # Required for writing Big-Endian numbers (firmware requirement)
|
||||
thiserror = "2" # Makes custom error handling much easier
|
||||
anyhow = "1" # For easy error propagation
|
||||
hidapi = "2.6" # For fido2 interface operations but non-standard commands
|
||||
serde_cbor_2 = "0.13"
|
||||
rand = "0.10"
|
||||
bitflags = "2.11"
|
||||
base64 = "0.22" # For PEM encoding of DER certificates
|
||||
ring = "0.17" # For signing fido2 messages with pin token
|
||||
aes = "0.8"
|
||||
cbc = "0.1"
|
||||
bitflags = "2.13.0"
|
||||
base64 = "0.22" # For PEM encoding of DER certificates
|
||||
ring = "0.17" # For signing fido2 messages with pin token
|
||||
aes = "0.9"
|
||||
cbc = "0.2"
|
||||
|
||||
# For Application UI:
|
||||
gpui = { version = "0.2.2", features = [] }
|
||||
|
||||
+54
-48
@@ -1,5 +1,4 @@
|
||||
use aes::cipher::generic_array::GenericArray;
|
||||
use cbc::cipher::{BlockDecryptMut, BlockEncryptMut, KeyIvInit, block_padding::NoPadding};
|
||||
use cbc::cipher::{Block, BlockModeDecrypt, BlockModeEncrypt, KeyIvInit, block_padding::NoPadding};
|
||||
use rand::RngExt;
|
||||
use ring::{agreement, digest, hmac};
|
||||
use serde_cbor_2::{Value, from_slice, to_vec};
|
||||
@@ -738,14 +737,15 @@ impl HidTransport {
|
||||
let pin_hash_16 = &pin_hash.as_ref()[0..16];
|
||||
|
||||
let iv = [0u8; 16];
|
||||
let mut block = *GenericArray::from_slice(pin_hash_16);
|
||||
let mut block = Block::<aes::Aes256>::try_from(pin_hash_16).unwrap();
|
||||
|
||||
let shared_secret_bytes = shared_secret.as_ref();
|
||||
let mut encryptor = cbc::Encryptor::<aes::Aes256>::new(
|
||||
GenericArray::from_slice(shared_secret_bytes),
|
||||
GenericArray::from_slice(&iv),
|
||||
);
|
||||
encryptor.encrypt_block_mut(&mut block);
|
||||
let mut encryptor = cbc::Encryptor::<aes::Aes256>::new_from_slices(
|
||||
shared_secret_bytes,
|
||||
&iv,
|
||||
)
|
||||
.unwrap();
|
||||
encryptor.encrypt_block(&mut block);
|
||||
let pin_hash_enc = block.to_vec();
|
||||
|
||||
// 6. Send getPinToken command (Subcommand 0x05)
|
||||
@@ -777,11 +777,12 @@ impl HidTransport {
|
||||
Some(Value::Bytes(token_enc)) => {
|
||||
// Decrypt the PIN token using shared secret (AES-256-CBC, IV=0)
|
||||
let mut token_buf = token_enc.clone();
|
||||
let decrypted = cbc::Decryptor::<aes::Aes256>::new(
|
||||
GenericArray::from_slice(shared_secret_bytes),
|
||||
GenericArray::from_slice(&iv),
|
||||
let decrypted = cbc::Decryptor::<aes::Aes256>::new_from_slices(
|
||||
shared_secret_bytes,
|
||||
&iv,
|
||||
)
|
||||
.decrypt_padded_mut::<NoPadding>(&mut token_buf)
|
||||
.map_err(|_| PFError::Device("Failed to create decryptor".into()))?
|
||||
.decrypt_padded::<NoPadding>(&mut token_buf)
|
||||
.map_err(|_| PFError::Device("Failed to decrypt PIN token".into()))?;
|
||||
log::info!("Successfully obtained and decrypted PIN token (Subcommand 0x05).");
|
||||
Ok(decrypted.to_vec())
|
||||
@@ -853,14 +854,15 @@ impl HidTransport {
|
||||
let pin_hash_16 = &pin_hash.as_ref()[0..16];
|
||||
|
||||
let iv = [0u8; 16];
|
||||
let mut block = *GenericArray::from_slice(pin_hash_16);
|
||||
let mut block = Block::<aes::Aes256>::try_from(pin_hash_16).unwrap();
|
||||
|
||||
let shared_secret_bytes = shared_secret.as_ref();
|
||||
let mut encryptor = cbc::Encryptor::<aes::Aes256>::new(
|
||||
GenericArray::from_slice(shared_secret_bytes),
|
||||
GenericArray::from_slice(&iv),
|
||||
);
|
||||
encryptor.encrypt_block_mut(&mut block);
|
||||
let mut encryptor = cbc::Encryptor::<aes::Aes256>::new_from_slices(
|
||||
shared_secret_bytes,
|
||||
&iv,
|
||||
)
|
||||
.unwrap();
|
||||
encryptor.encrypt_block(&mut block);
|
||||
let pin_hash_enc = block.to_vec();
|
||||
|
||||
// 6. Send getPinUvAuthTokenUsingPinWithPermissions command (Subcommand 0x09)
|
||||
@@ -900,11 +902,12 @@ impl HidTransport {
|
||||
Some(Value::Bytes(token_enc)) => {
|
||||
// Decrypt the PIN token using shared secret (AES-256-CBC, IV=0)
|
||||
let mut token_buf = token_enc.clone();
|
||||
let decrypted = cbc::Decryptor::<aes::Aes256>::new(
|
||||
GenericArray::from_slice(shared_secret_bytes),
|
||||
GenericArray::from_slice(&iv),
|
||||
let decrypted = cbc::Decryptor::<aes::Aes256>::new_from_slices(
|
||||
shared_secret_bytes,
|
||||
&iv,
|
||||
)
|
||||
.decrypt_padded_mut::<NoPadding>(&mut token_buf)
|
||||
.map_err(|_| PFError::Device("Failed to create decryptor".into()))?
|
||||
.decrypt_padded::<NoPadding>(&mut token_buf)
|
||||
.map_err(|_| PFError::Device("Failed to decrypt PIN token".into()))?;
|
||||
log::info!("Successfully obtained and decrypted PIN token (Subcommand 0x09).");
|
||||
Ok(decrypted.to_vec())
|
||||
@@ -983,13 +986,14 @@ impl HidTransport {
|
||||
|
||||
let iv = [0u8; 16];
|
||||
let mut new_pin_enc = Vec::new();
|
||||
let mut encryptor = cbc::Encryptor::<aes::Aes256>::new(
|
||||
GenericArray::from_slice(shared_secret_bytes),
|
||||
GenericArray::from_slice(&iv),
|
||||
);
|
||||
let mut encryptor = cbc::Encryptor::<aes::Aes256>::new_from_slices(
|
||||
shared_secret_bytes,
|
||||
&iv,
|
||||
)
|
||||
.unwrap();
|
||||
for chunk in padded_new_pin.chunks_exact(16) {
|
||||
let mut block = *GenericArray::from_slice(chunk);
|
||||
encryptor.encrypt_block_mut(&mut block);
|
||||
let mut block = Block::<aes::Aes256>::try_from(chunk).unwrap();
|
||||
encryptor.encrypt_block(&mut block);
|
||||
new_pin_enc.extend_from_slice(&block);
|
||||
}
|
||||
|
||||
@@ -1101,12 +1105,13 @@ impl HidTransport {
|
||||
let pin_hash = digest::digest(&digest::SHA256, current_pin.as_bytes());
|
||||
let pin_hash_16 = &pin_hash.as_ref()[0..16];
|
||||
let iv = [0u8; 16];
|
||||
let mut block = *GenericArray::from_slice(pin_hash_16);
|
||||
cbc::Encryptor::<aes::Aes256>::new(
|
||||
GenericArray::from_slice(shared_secret_bytes),
|
||||
GenericArray::from_slice(&iv),
|
||||
let mut block = Block::<aes::Aes256>::try_from(pin_hash_16).unwrap();
|
||||
cbc::Encryptor::<aes::Aes256>::new_from_slices(
|
||||
shared_secret_bytes,
|
||||
&iv,
|
||||
)
|
||||
.encrypt_block_mut(&mut block);
|
||||
.unwrap()
|
||||
.encrypt_block(&mut block);
|
||||
let pin_hash_enc = block.to_vec();
|
||||
|
||||
// 6. Encrypt newPinEnc
|
||||
@@ -1115,13 +1120,14 @@ impl HidTransport {
|
||||
padded_new_pin[..bytes.len()].copy_from_slice(bytes);
|
||||
|
||||
let mut new_pin_enc = Vec::new();
|
||||
let mut encryptor = cbc::Encryptor::<aes::Aes256>::new(
|
||||
GenericArray::from_slice(shared_secret_bytes),
|
||||
GenericArray::from_slice(&iv),
|
||||
);
|
||||
let mut encryptor = cbc::Encryptor::<aes::Aes256>::new_from_slices(
|
||||
shared_secret_bytes,
|
||||
&iv,
|
||||
)
|
||||
.unwrap();
|
||||
for chunk in padded_new_pin.chunks_exact(16) {
|
||||
let mut block = *GenericArray::from_slice(chunk);
|
||||
encryptor.encrypt_block_mut(&mut block);
|
||||
let mut block = Block::<aes::Aes256>::try_from(chunk).unwrap();
|
||||
encryptor.encrypt_block(&mut block);
|
||||
new_pin_enc.extend_from_slice(&block);
|
||||
}
|
||||
|
||||
@@ -1722,10 +1728,9 @@ mod tests {
|
||||
#[test]
|
||||
fn test_pin_hash_encryption_actually_encrypts() {
|
||||
// Verify that our AES-CBC encryption actually modifies the data.
|
||||
// This guards against the previous bug where encrypt_block_mut
|
||||
// This guards against the previous bug where encrypt_block
|
||||
// was called on a temporary copy (buffer.into()), discarding the result.
|
||||
use aes::cipher::generic_array::GenericArray;
|
||||
use cbc::cipher::{BlockEncryptMut, KeyIvInit};
|
||||
use cbc::cipher::BlockModeEncrypt;
|
||||
use ring::digest;
|
||||
|
||||
let pin = "123456";
|
||||
@@ -1736,14 +1741,15 @@ mod tests {
|
||||
let key = [0u8; 32];
|
||||
let iv = [0u8; 16];
|
||||
|
||||
let mut block = *GenericArray::from_slice(pin_hash_16);
|
||||
let mut block = Block::<aes::Aes256>::try_from(pin_hash_16).unwrap();
|
||||
let original = block;
|
||||
|
||||
let mut encryptor = cbc::Encryptor::<aes::Aes256>::new(
|
||||
GenericArray::from_slice(&key),
|
||||
GenericArray::from_slice(&iv),
|
||||
);
|
||||
encryptor.encrypt_block_mut(&mut block);
|
||||
let mut encryptor = cbc::Encryptor::<aes::Aes256>::new_from_slices(
|
||||
&key,
|
||||
&iv,
|
||||
)
|
||||
.unwrap();
|
||||
encryptor.encrypt_block(&mut block);
|
||||
|
||||
// The encrypted block MUST differ from the original
|
||||
assert_ne!(
|
||||
|
||||
@@ -1070,7 +1070,9 @@ mod tests {
|
||||
power_cycle_on_reset: None,
|
||||
led_steady: None,
|
||||
enable_secp256k1: None,
|
||||
raw_curves_mask: None,
|
||||
led_order: None,
|
||||
enabled_usb_itf: None,
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@@ -908,9 +908,7 @@ impl ConfigView {
|
||||
|
||||
let dec_bright_listener = cx.listener(move |this, _, _, cx| {
|
||||
let mut b = this.led_status_brightness[c_i];
|
||||
if b > 0 {
|
||||
b -= 1;
|
||||
}
|
||||
b = b.saturating_sub(1);
|
||||
this.led_status_brightness[c_i] = b;
|
||||
cx.notify();
|
||||
});
|
||||
|
||||
@@ -1029,10 +1029,10 @@ impl PasskeysView {
|
||||
.child("Reset Device")
|
||||
.custom(
|
||||
ButtonCustomVariant::new(cx)
|
||||
.color(theme.danger.into())
|
||||
.hover(theme.danger_hover.into())
|
||||
.active(theme.danger_active.into())
|
||||
.foreground(theme.danger_foreground.into()),
|
||||
.color(theme.danger)
|
||||
.hover(theme.danger_hover)
|
||||
.active(theme.danger_active)
|
||||
.foreground(theme.danger_foreground),
|
||||
)
|
||||
.disabled(self.loading)
|
||||
.on_click(cx.listener(|this, _, window, cx| {
|
||||
|
||||
Reference in New Issue
Block a user