Expose SHA256 algorithm to Lua (#14403)

Co-authored-by: chmodsayshello <chmodsayshello@hotmail.com>
This commit is contained in:
sfan5 2024-02-25 18:12:23 +01:00 committed by GitHub
parent fa1d80b53b
commit 762fca538c
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4 changed files with 38 additions and 0 deletions

@ -5484,6 +5484,9 @@ Utilities
* `minetest.sha1(data, [raw])`: returns the sha1 hash of data
* `data`: string of data to hash
* `raw`: return raw bytes instead of hex digits, default: false
* `minetest.sha256(data, [raw])`: returns the sha256 hash of data
* `data`: string of data to hash
* `raw`: return raw bytes instead of hex digits, default: false
* `minetest.colorspec_to_colorstring(colorspec)`: Converts a ColorSpec to a
ColorString. If the ColorSpec is invalid, returns `nil`.
* `colorspec`: The ColorSpec to convert

@ -111,6 +111,13 @@ unittests.register("test_punch_node", function(_, pos)
-- currently failing: assert(on_punch_called)
end, {map=true})
local function test_hashing()
local input = "hello\000world"
assert(core.sha1(input) == "f85b420f1e43ebf88649dfcab302b898d889606c")
assert(core.sha256(input) == "b206899bc103669c8e7b36de29d73f95b46795b508aa87d612b2ce84bfb29df2")
end
unittests.register("test_hashing", test_hashing)
local function test_compress()
-- This text should be compressible, to make sure the results are... normal
local text = "The\000 icey canoe couldn't move very well on the\128 lake. The\000 ice was too stiff and the icey canoe's paddles simply wouldn't punch through."

@ -42,6 +42,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "version.h"
#include "util/hex.h"
#include "util/sha1.h"
#include "util/sha256.h"
#include "util/png.h"
#include <cstdio>
@ -566,6 +567,27 @@ int ModApiUtil::l_sha1(lua_State *L)
return 1;
}
int ModApiUtil::l_sha256(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
auto data = readParam<std::string_view>(L, 1);
bool hex = !lua_isboolean(L, 2) || !readParam<bool>(L, 2);
std::string data_sha256;
data_sha256.resize(SHA256_DIGEST_LENGTH);
SHA256(reinterpret_cast<const unsigned char*>(data.data()), data.size(),
reinterpret_cast<unsigned char *>(data_sha256.data()));
if (hex) {
lua_pushstring(L, hex_encode(data_sha256).c_str());
} else {
lua_pushlstring(L, data_sha256.data(), data_sha256.size());
}
return 1;
}
// colorspec_to_colorstring(colorspec)
int ModApiUtil::l_colorspec_to_colorstring(lua_State *L)
{
@ -690,6 +712,7 @@ void ModApiUtil::Initialize(lua_State *L, int top)
API_FCT(get_version);
API_FCT(sha1);
API_FCT(sha256);
API_FCT(colorspec_to_colorstring);
API_FCT(colorspec_to_bytes);
@ -723,6 +746,7 @@ void ModApiUtil::InitializeClient(lua_State *L, int top)
API_FCT(get_version);
API_FCT(sha1);
API_FCT(sha256);
API_FCT(colorspec_to_colorstring);
API_FCT(colorspec_to_bytes);
@ -766,6 +790,7 @@ void ModApiUtil::InitializeAsync(lua_State *L, int top)
API_FCT(get_version);
API_FCT(sha1);
API_FCT(sha256);
API_FCT(colorspec_to_colorstring);
API_FCT(colorspec_to_bytes);

@ -113,6 +113,9 @@ private:
// sha1(string, raw)
static int l_sha1(lua_State *L);
// sha256(string, raw)
static int l_sha256(lua_State *L);
// colorspec_to_colorstring(colorspec)
static int l_colorspec_to_colorstring(lua_State *L);