crypto/secp256k1: raise internal errors as recoverable Go panic

This commit is contained in:
Felix Lange 2015-11-16 18:04:56 +01:00
parent 1b29aed128
commit 5159f8f649
2 changed files with 39 additions and 0 deletions

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@ -0,0 +1,33 @@
// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package secp256k1
import "C"
import "unsafe"
// Callbacks for converting libsecp256k1 internal faults into
// recoverable Go panics.
//export secp256k1GoPanicIllegal
func secp256k1GoPanicIllegal(msg *C.char, data unsafe.Pointer) {
panic("illegal argument: " + C.GoString(msg))
}
//export secp256k1GoPanicError
func secp256k1GoPanicError(msg *C.char, data unsafe.Pointer) {
panic("internal error: " + C.GoString(msg))
}

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@ -35,6 +35,10 @@ package secp256k1
#define NDEBUG #define NDEBUG
#include "./libsecp256k1/src/secp256k1.c" #include "./libsecp256k1/src/secp256k1.c"
#include "./libsecp256k1/src/modules/recovery/main_impl.h" #include "./libsecp256k1/src/modules/recovery/main_impl.h"
typedef void (*callbackFunc) (const char* msg, void* data);
extern void secp256k1GoPanicIllegal(const char* msg, void* data);
extern void secp256k1GoPanicError(const char* msg, void* data);
*/ */
import "C" import "C"
@ -61,6 +65,8 @@ var context *C.secp256k1_context
func init() { func init() {
// around 20 ms on a modern CPU. // around 20 ms on a modern CPU.
context = C.secp256k1_context_create(3) // SECP256K1_START_SIGN | SECP256K1_START_VERIFY context = C.secp256k1_context_create(3) // SECP256K1_START_SIGN | SECP256K1_START_VERIFY
C.secp256k1_context_set_illegal_callback(context, C.callbackFunc(C.secp256k1GoPanicIllegal), nil)
C.secp256k1_context_set_error_callback(context, C.callbackFunc(C.secp256k1GoPanicError), nil)
} }
var ( var (