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authorFelix Lange <fjl@twurst.com>2015-11-17 01:04:56 +0800
committerFelix Lange <fjl@twurst.com>2015-11-17 16:53:10 +0800
commit5159f8f6493bfa3cfb0ee3b1517f4576d4c9d2de (patch)
tree692c95113054434e13a0b77981e3c4953d4464aa /crypto
parent1b29aed1283bd050ac7b782b352a7c87d88d82ab (diff)
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crypto/secp256k1: raise internal errors as recoverable Go panic
Diffstat (limited to 'crypto')
-rw-r--r--crypto/secp256k1/panic_cb.go33
-rw-r--r--crypto/secp256k1/secp256.go6
2 files changed, 39 insertions, 0 deletions
diff --git a/crypto/secp256k1/panic_cb.go b/crypto/secp256k1/panic_cb.go
new file mode 100644
index 000000000..e0e9034ee
--- /dev/null
+++ b/crypto/secp256k1/panic_cb.go
@@ -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))
+}
diff --git a/crypto/secp256k1/secp256.go b/crypto/secp256k1/secp256.go
index 634e1c0b8..4269b6a8c 100644
--- a/crypto/secp256k1/secp256.go
+++ b/crypto/secp256k1/secp256.go
@@ -35,6 +35,10 @@ package secp256k1
#define NDEBUG
#include "./libsecp256k1/src/secp256k1.c"
#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"
@@ -61,6 +65,8 @@ var context *C.secp256k1_context
func init() {
// around 20 ms on a modern CPU.
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 (