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-rw-r--r--src/script/lua_api/l_util.cpp31
-rw-r--r--src/script/lua_api/l_util.h3
2 files changed, 34 insertions, 0 deletions
diff --git a/src/script/lua_api/l_util.cpp b/src/script/lua_api/l_util.cpp
index 5128e79e6..ef4df8182 100644
--- a/src/script/lua_api/l_util.cpp
+++ b/src/script/lua_api/l_util.cpp
@@ -37,6 +37,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "util/base64.h"
#include "config.h"
#include "version.h"
+#include "util/hex.h"
+#include "util/sha1.h"
#include <algorithm>
@@ -423,6 +425,32 @@ int ModApiUtil::l_get_version(lua_State *L)
return 1;
}
+int ModApiUtil::l_sha1(lua_State *L)
+{
+ NO_MAP_LOCK_REQUIRED;
+ size_t size;
+ const char *data = luaL_checklstring(L, 1, &size);
+ bool hex = !lua_isboolean(L, 2) || !lua_toboolean(L, 2);
+
+ // Compute actual checksum of data
+ std::string data_sha1;
+ {
+ SHA1 ctx;
+ ctx.addBytes(data, size);
+ unsigned char *data_tmpdigest = ctx.getDigest();
+ data_sha1.assign((char*) data_tmpdigest, 20);
+ free(data_tmpdigest);
+ }
+
+ if (hex) {
+ std::string sha1_hex = hex_encode(data_sha1);
+ lua_pushstring(L, sha1_hex.c_str());
+ } else {
+ lua_pushlstring(L, data_sha1.data(), data_sha1.size());
+ }
+
+ return 1;
+}
void ModApiUtil::Initialize(lua_State *L, int top)
{
@@ -455,6 +483,7 @@ void ModApiUtil::Initialize(lua_State *L, int top)
API_FCT(decode_base64);
API_FCT(get_version);
+ API_FCT(sha1);
LuaSettings::create(L, g_settings, g_settings_path);
lua_setfield(L, top, "settings");
@@ -478,6 +507,7 @@ void ModApiUtil::InitializeClient(lua_State *L, int top)
API_FCT(decode_base64);
API_FCT(get_version);
+ API_FCT(sha1);
}
void ModApiUtil::InitializeAsync(lua_State *L, int top)
@@ -503,6 +533,7 @@ void ModApiUtil::InitializeAsync(lua_State *L, int top)
API_FCT(decode_base64);
API_FCT(get_version);
+ API_FCT(sha1);
LuaSettings::create(L, g_settings, g_settings_path);
lua_setfield(L, top, "settings");
diff --git a/src/script/lua_api/l_util.h b/src/script/lua_api/l_util.h
index b7aafe8d5..e17425d73 100644
--- a/src/script/lua_api/l_util.h
+++ b/src/script/lua_api/l_util.h
@@ -92,6 +92,9 @@ private:
// get_version()
static int l_get_version(lua_State *L);
+ // sha1(string, raw)
+ static int l_sha1(lua_State *L);
+
public:
static void Initialize(lua_State *L, int top);
static void InitializeAsync(lua_State *L, int top);