Fix bug: When using dynamic linking, auth will be loaded repeatedly. #27
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| use crate::{CkbAuthError, CkbAuthType, CkbEntryType}; | ||
| use alloc::boxed::Box; | ||
| use alloc::collections::BTreeMap; | ||
| use ckb_std::{ | ||
| ckb_types::core::ScriptHashType, | ||
| dynamic_loading_c_impl::{CKBDLContext, Library, Symbol}, | ||
| }; | ||
| use core::mem::size_of; | ||
|
|
||
| #[cfg(feature = "dynamic-library-memory-200")] | ||
| type DLContext = CKBDLContext<[u8; 200 * 1024]>; | ||
|
|
||
| #[cfg(feature = "dynamic-library-memory-400")] | ||
| type DLContext = CKBDLContext<[u8; 400 * 1024]>; | ||
|
|
||
| #[cfg(feature = "dynamic-library-memory-600")] | ||
| type DLContext = CKBDLContext<[u8; 600 * 1024]>; | ||
|
|
||
| type CkbAuthValidate = unsafe extern "C" fn( | ||
| auth_algorithm_id: u8, | ||
| signature: *const u8, | ||
| signature_size: u32, | ||
| message: *const u8, | ||
| message_size: u32, | ||
| pubkey_hash: *mut u8, | ||
| pubkey_hash_size: u32, | ||
| ) -> i32; | ||
|
|
||
| const EXPORTED_FUNC_NAME: &str = "ckb_auth_validate"; | ||
|
|
||
| struct CKBDLLoader { | ||
| pub context: Box<DLContext>, | ||
| pub context_used: usize, | ||
| pub loaded_lib: BTreeMap<[u8; 33], Library>, | ||
| } | ||
|
|
||
| lazy_static::lazy_static! { | ||
| static ref G_DL_CONTEXT: DLContext = unsafe { DLContext::new() }; | ||
| } | ||
|
|
||
| static mut G_CKB_DL_LOADER: Option<CKBDLLoader> = None; | ||
| impl CKBDLLoader { | ||
| pub fn get() -> &'static mut Self { | ||
| unsafe { | ||
| match G_CKB_DL_LOADER.as_mut() { | ||
| Some(v) => v, | ||
| None => { | ||
| G_CKB_DL_LOADER = Some(Self::new()); | ||
| G_CKB_DL_LOADER.as_mut().unwrap() | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| fn new() -> Self { | ||
| Self { | ||
| context: unsafe { | ||
| let dl_ctx: &DLContext = &G_DL_CONTEXT; | ||
| Box::from_raw(dl_ctx as *const DLContext as *mut DLContext) | ||
| }, | ||
| context_used: 0, | ||
| loaded_lib: BTreeMap::new(), | ||
| } | ||
| } | ||
|
|
||
| fn get_lib( | ||
| &mut self, | ||
| code_hash: &[u8; 32], | ||
| hash_type: ScriptHashType, | ||
| ) -> Result<&Library, CkbAuthError> { | ||
| let mut lib_key = [0u8; 33]; | ||
| lib_key[..32].copy_from_slice(code_hash); | ||
| lib_key[32] = hash_type as u8; | ||
|
|
||
| let has_lib = match self.loaded_lib.get(&lib_key) { | ||
| Some(_) => true, | ||
| None => false, | ||
| }; | ||
|
|
||
| if !has_lib { | ||
| let size = size_of::<DLContext>(); | ||
| let lib = self | ||
| .context | ||
| .load_with_offset(code_hash, hash_type, self.context_used, size) | ||
| .map_err(|_| CkbAuthError::LoadDLError)?; | ||
| self.context_used += lib.consumed_size(); | ||
| self.loaded_lib.insert(lib_key.clone(), lib); | ||
| }; | ||
| Ok(self.loaded_lib.get(&lib_key).unwrap()) | ||
| } | ||
|
|
||
| pub fn get_validate_func<T>( | ||
| &mut self, | ||
| code_hash: &[u8; 32], | ||
| hash_type: ScriptHashType, | ||
| func_name: &str, | ||
| ) -> Result<Symbol<T>, CkbAuthError> { | ||
| let lib = self.get_lib(code_hash, hash_type)?; | ||
|
|
||
| let func: Option<Symbol<T>> = unsafe { lib.get(func_name.as_bytes()) }; | ||
| if func.is_none() { | ||
| return Err(CkbAuthError::LoadDLFuncError); | ||
| } | ||
| Ok(func.unwrap()) | ||
| } | ||
| } | ||
|
|
||
| pub fn ckb_auth_dl( | ||
| entry: &CkbEntryType, | ||
| id: &CkbAuthType, | ||
| signature: &[u8], | ||
| message: &[u8; 32], | ||
| ) -> Result<(), CkbAuthError> { | ||
| let func: Symbol<CkbAuthValidate> = CKBDLLoader::get().get_validate_func( | ||
| &entry.code_hash, | ||
| entry.hash_type, | ||
| EXPORTED_FUNC_NAME, | ||
| )?; | ||
|
|
||
| let mut pub_key = id.pubkey_hash.clone(); | ||
| let rc_code = unsafe { | ||
| func( | ||
| id.algorithm_id.clone().into(), | ||
| signature.as_ptr(), | ||
| signature.len() as u32, | ||
| message.as_ptr(), | ||
| message.len() as u32, | ||
| pub_key.as_mut_ptr(), | ||
| pub_key.len() as u32, | ||
| ) | ||
| }; | ||
|
|
||
| match rc_code { | ||
| 0 => Ok(()), | ||
| _ => Err(CkbAuthError::RunDLError), | ||
| } | ||
| } |
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init it to zero.