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/*
See license.txt in the root of this project.
*/
# include <ctype.h>
# include <utilmd5.h>
# include <utiliof.h>
# include <utilbasexx.h>
# include "luametatex.h"
/*
# define wrapped_md5(message,len,output) md5_digest(message,len,(unsigned char *) output, 0)
static int md5lib_sum(lua_State *L)
{
char buf[16];
size_t l;
const char *message = luaL_checklstring(L, 1, &l);
wrapped_md5(message, l, buf);
lua_pushlstring(L, buf, 16L);
return 1;
}
static int md5lib_hex(lua_State *L)
{
char buf[16];
char hex[32];
iof *inp = iof_filter_string_reader(buf, 16);
iof *out = iof_filter_string_writer(hex, 32);
size_t l;
const char *message = luaL_checklstring(L, 1, &l);
wrapped_md5(message, l, buf);
base16_encode_lc(inp, out);
lua_pushlstring(L, hex, iof_size(out));
iof_free(inp);
iof_free(out);
return 1;
}
static int md5lib_HEX(lua_State *L)
{
char buf[16];
char hex[32];
iof *inp = iof_filter_string_reader(buf, 16);
iof *out = iof_filter_string_writer(hex, 32);
size_t l;
const char *message = luaL_checklstring(L, 1, &l);
wrapped_md5(message, l, buf);
base16_encode_uc(inp, out);
lua_pushlstring(L, hex, iof_size(out));
iof_free(inp);
iof_free(out);
return 1;
}
*/
# define MD5_RESULT_LENGTH (MD5_STRING_LENGTH-1)
# define md5_body(MD5_LENGTH, CONVERSION, RESULT_LENGTH) do { \
if (lua_type(L, 1) == LUA_TSTRING) { \
uint8_t result[MD5_LENGTH]; \
size_t size = 0; \
const char *data = lua_tolstring(L, 1, &size); \
md5_digest(data, size, (unsigned char *) result, CONVERSION); \
lua_pushlstring(L, (const char *) result, RESULT_LENGTH); \
return 1; \
} \
return 0; \
} while (0)
static int md5lib_sum(lua_State *L) { md5_body(MD5_DIGEST_LENGTH, MD5_BYTES, MD5_DIGEST_LENGTH); }
static int md5lib_hex(lua_State *L) { md5_body(MD5_STRING_LENGTH, MD5_LCHEX, MD5_RESULT_LENGTH); }
static int md5lib_HEX(lua_State *L) { md5_body(MD5_STRING_LENGTH, MD5_UCHEX, MD5_RESULT_LENGTH); }
static struct luaL_Reg md5lib_function_list[] = {
{ "sum", md5lib_sum },
{ "hex", md5lib_hex },
{ "HEX", md5lib_HEX },
{ NULL, NULL },
};
int luaopen_md5(lua_State *L) {
lua_newtable(L);
luaL_setfuncs(L, md5lib_function_list, 0);
return 1;
}
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