From: Felix Fietkau Date: Sat, 24 Oct 2009 23:23:42 +0000 (+0000) Subject: lua: get rid of bitlib and md5lib from the core, they are no longer necessary X-Git-Tag: reboot~22095 X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7aaaa2c94695bc63effa890487c170359139b94b;p=openwrt%2Fstaging%2Fpepe2k.git lua: get rid of bitlib and md5lib from the core, they are no longer necessary SVN-Revision: 18138 --- diff --git a/package/lua/patches/410-bitlib_25-embedded.patch b/package/lua/patches/410-bitlib_25-embedded.patch deleted file mode 100644 index 91de0647f5..0000000000 --- a/package/lua/patches/410-bitlib_25-embedded.patch +++ /dev/null @@ -1,186 +0,0 @@ -Index: lua-5.1.4/src/Makefile -=================================================================== ---- lua-5.1.4.orig/src/Makefile 2008-09-25 13:08:31.000000000 +0200 -+++ lua-5.1.4/src/Makefile 2008-09-25 13:08:43.000000000 +0200 -@@ -29,7 +29,7 @@ - lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o \ - lundump.o lvm.o lzio.o lnum.o - LIB_O= lauxlib.o lbaselib.o ldblib.o liolib.o lmathlib.o loslib.o ltablib.o \ -- lstrlib.o loadlib.o linit.o lposix.o -+ lstrlib.o loadlib.o linit.o lposix.o lbitlib.o - - LUA_T= lua - LUA_O= lua.o -Index: lua-5.1.4/src/bit_limits.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ lua-5.1.4/src/bit_limits.h 2008-09-25 13:09:16.000000000 +0200 -@@ -0,0 +1,4 @@ -+#define BITLIB_FLOAT_BITS 53 -+#define BITLIB_FLOAT_MAX 0xfffffffffffffL -+#define BITLIB_FLOAT_MIN (-0x10000000000000L) -+#define BITLIB_FLOAT_UMAX 0x1fffffffffffffUL -Index: lua-5.1.4/src/lbitlib.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ lua-5.1.4/src/lbitlib.c 2008-09-25 13:05:15.000000000 +0200 -@@ -0,0 +1,133 @@ -+/* Bitwise operations library */ -+/* (c) Reuben Thomas 2000-2008 */ -+/* See README for license */ -+ -+#include "lua.h" -+#include "lauxlib.h" -+#include "limits.h" -+ -+#include "bit_limits.h" -+ -+ -+/* FIXME: Assume lua_Integer is int */ -+#define LUA_INTEGER_MAX INT_MAX -+#define LUA_INTEGER_MIN INT_MIN -+ -+/* FIXME: Assume uint is an unsigned lua_Integer */ -+typedef unsigned int lua_UInteger; -+#define LUA_UINTEGER_MAX UINT_MAX -+ -+ -+/* Bit type size and limits */ -+ -+#define BIT_BITS \ -+ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? \ -+ BITLIB_FLOAT_BITS : (CHAR_BIT * sizeof(lua_Integer))) -+ -+/* This code may give warnings if BITLIB_FLOAT_* are too big to fit in -+ long, but that doesn't matter since in that case they won't be -+ used. */ -+#define BIT_MAX \ -+ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? BITLIB_FLOAT_MAX : LUA_INTEGER_MAX) -+ -+#define BIT_MIN \ -+ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? BITLIB_FLOAT_MIN : LUA_INTEGER_MIN) -+ -+#define BIT_UMAX \ -+ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? BITLIB_FLOAT_UMAX : LUA_UINTEGER_MAX) -+ -+ -+/* Define TOBIT to get a bit value */ -+#ifdef BUILTIN_CAST -+#define -+#define TOBIT(L, n, res) \ -+ ((void)(res), luaL_checkinteger((L), (n))) -+#else -+#include -+#include -+ -+/* FIXME: Assume lua_Number fits in a double (use of fmod). */ -+#define TOBIT(L, n, res) \ -+ ((lua_Integer)(((res) = fmod(luaL_checknumber(L, (n)), (double)BIT_UMAX + 1.0)), \ -+ (res) > BIT_MAX ? ((res) -= (double)BIT_UMAX, (res) -= 1) : \ -+ ((res) < BIT_MIN ? ((res) += (double)BIT_UMAX, (res) += 1) : (res)))) -+#endif -+ -+ -+#define BIT_TRUNCATE(i) \ -+ ((i) & BIT_UMAX) -+ -+ -+/* Operations -+ -+ The macros MONADIC and VARIADIC only deal with bitwise operations. -+ -+ LOGICAL_SHIFT truncates its left-hand operand before shifting so -+ that any extra bits at the most-significant end are not shifted -+ into the result. -+ -+ ARITHMETIC_SHIFT does not truncate its left-hand operand, so that -+ the sign bits are not removed and right shift work properly. -+ */ -+ -+#define MONADIC(name, op) \ -+ static int bit_ ## name(lua_State *L) { \ -+ lua_Number f; \ -+ lua_pushinteger(L, BIT_TRUNCATE(op TOBIT(L, 1, f))); \ -+ return 1; \ -+ } -+ -+#define VARIADIC(name, op) \ -+ static int bit_ ## name(lua_State *L) { \ -+ lua_Number f; \ -+ int n = lua_gettop(L), i; \ -+ lua_Integer w = TOBIT(L, 1, f); \ -+ for (i = 2; i <= n; i++) \ -+ w op TOBIT(L, i, f); \ -+ lua_pushinteger(L, BIT_TRUNCATE(w)); \ -+ return 1; \ -+ } -+ -+#define LOGICAL_SHIFT(name, op) \ -+ static int bit_ ## name(lua_State *L) { \ -+ lua_Number f; \ -+ lua_pushinteger(L, BIT_TRUNCATE(BIT_TRUNCATE((lua_UInteger)TOBIT(L, 1, f)) op \ -+ (unsigned)luaL_checknumber(L, 2))); \ -+ return 1; \ -+ } -+ -+#define ARITHMETIC_SHIFT(name, op) \ -+ static int bit_ ## name(lua_State *L) { \ -+ lua_Number f; \ -+ lua_pushinteger(L, BIT_TRUNCATE((lua_Integer)TOBIT(L, 1, f) op \ -+ (unsigned)luaL_checknumber(L, 2))); \ -+ return 1; \ -+ } -+ -+MONADIC(cast, +) -+MONADIC(bnot, ~) -+VARIADIC(band, &=) -+VARIADIC(bor, |=) -+VARIADIC(bxor, ^=) -+ARITHMETIC_SHIFT(lshift, <<) -+LOGICAL_SHIFT(rshift, >>) -+ARITHMETIC_SHIFT(arshift, >>) -+ -+static const struct luaL_reg bitlib[] = { -+ {"cast", bit_cast}, -+ {"bnot", bit_bnot}, -+ {"band", bit_band}, -+ {"bor", bit_bor}, -+ {"bxor", bit_bxor}, -+ {"lshift", bit_lshift}, -+ {"rshift", bit_rshift}, -+ {"arshift", bit_arshift}, -+ {NULL, NULL} -+}; -+ -+LUALIB_API int luaopen_bit (lua_State *L) { -+ luaL_register(L, "bit", bitlib); -+ lua_pushnumber(L, BIT_BITS); -+ lua_setfield(L, -2, "bits"); -+ return 1; -+} -Index: lua-5.1.4/src/linit.c -=================================================================== ---- lua-5.1.4.orig/src/linit.c 2008-09-25 13:08:11.000000000 +0200 -+++ lua-5.1.4/src/linit.c 2008-09-25 13:08:27.000000000 +0200 -@@ -24,6 +24,7 @@ - {LUA_MATHLIBNAME, luaopen_math}, - {LUA_DBLIBNAME, luaopen_debug}, - {LUA_POSIXLIBNAME, luaopen_posix}, -+ {LUA_BITLIBNAME, luaopen_bit}, - {NULL, NULL} - }; - -Index: lua-5.1.4/src/lualib.h -=================================================================== ---- lua-5.1.4.orig/src/lualib.h 2008-09-25 13:07:29.000000000 +0200 -+++ lua-5.1.4/src/lualib.h 2008-09-25 13:08:06.000000000 +0200 -@@ -42,6 +42,9 @@ - #define LUA_POSIXLIBNAME "posix" - LUALIB_API int (luaopen_posix) (lua_State *L); - -+#define LUA_BITLIBNAME "bit" -+LUALIB_API int (luaopen_bit) (lua_State *L); -+ - - /* open all previous libraries */ - LUALIB_API void (luaL_openlibs) (lua_State *L); diff --git a/package/lua/patches/420-md5lib-embedded.patch b/package/lua/patches/420-md5lib-embedded.patch deleted file mode 100644 index bac8e5d770..0000000000 --- a/package/lua/patches/420-md5lib-embedded.patch +++ /dev/null @@ -1,484 +0,0 @@ -diff -Nur lua-5.1.4.orig/src/Makefile lua-5.1.4/src/Makefile ---- lua-5.1.4.orig/src/Makefile 2009-04-27 00:36:06.000000000 +0200 -+++ lua-5.1.4/src/Makefile 2009-04-27 00:47:54.000000000 +0200 -@@ -29,7 +29,7 @@ - lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o \ - lundump.o lvm.o lzio.o lnum.o - LIB_O= lauxlib.o lbaselib.o ldblib.o liolib.o lmathlib.o loslib.o ltablib.o \ -- lstrlib.o loadlib.o linit.o lposix.o lbitlib.o -+ lstrlib.o loadlib.o linit.o lposix.o lbitlib.o md5.o md5lib.o - - LUA_T= lua - LUA_O= lua.o -diff -Nur lua-5.1.4.orig/src/linit.c lua-5.1.4/src/linit.c ---- lua-5.1.4.orig/src/linit.c 2009-04-27 00:36:06.000000000 +0200 -+++ lua-5.1.4/src/linit.c 2009-04-27 00:44:54.000000000 +0200 -@@ -25,6 +25,7 @@ - {LUA_DBLIBNAME, luaopen_debug}, - {LUA_POSIXLIBNAME, luaopen_posix}, - {LUA_BITLIBNAME, luaopen_bit}, -+ {LUA_MD5LIBNAME, luaopen_md5_core}, - {NULL, NULL} - }; - -diff -Nur lua-5.1.4.orig/src/lualib.h lua-5.1.4/src/lualib.h ---- lua-5.1.4.orig/src/lualib.h 2009-04-27 00:36:06.000000000 +0200 -+++ lua-5.1.4/src/lualib.h 2009-04-27 00:46:01.000000000 +0200 -@@ -45,6 +45,8 @@ - #define LUA_BITLIBNAME "bit" - LUALIB_API int (luaopen_bit) (lua_State *L); - -+#define LUA_MD5LIBNAME "md5" -+LUALIB_API int (luaopen_md5_core) (lua_State *L); - - /* open all previous libraries */ - LUALIB_API void (luaL_openlibs) (lua_State *L); -diff -Nur lua-5.1.4.orig/src/md5.c lua-5.1.4/src/md5.c ---- lua-5.1.4.orig/src/md5.c 1970-01-01 01:00:00.000000000 +0100 -+++ lua-5.1.4/src/md5.c 2008-03-24 21:59:12.000000000 +0100 -@@ -0,0 +1,214 @@ -+/** -+* $Id: md5.c,v 1.2 2008/03/24 20:59:12 mascarenhas Exp $ -+* Hash function MD5 -+* @author Marcela Ozorio Suarez, Roberto I. -+*/ -+ -+ -+#include -+ -+#include "md5.h" -+ -+ -+#define WORD 32 -+#define MASK 0xFFFFFFFF -+#if __STDC_VERSION__ >= 199901L -+#include -+typedef uint32_t WORD32; -+#else -+typedef unsigned int WORD32; -+#endif -+ -+ -+/** -+* md5 hash function. -+* @param message: aribtary string. -+* @param len: message length. -+* @param output: buffer to receive the hash value. Its size must be -+* (at least) HASHSIZE. -+*/ -+void md5 (const char *message, long len, char *output); -+ -+ -+ -+/* -+** Realiza a rotacao no sentido horario dos bits da variavel 'D' do tipo WORD32. -+** Os bits sao deslocados de 'num' posicoes -+*/ -+#define rotate(D, num) (D<>(WORD-num)) -+ -+/*Macros que definem operacoes relizadas pelo algoritmo md5 */ -+#define F(x, y, z) (((x) & (y)) | ((~(x)) & (z))) -+#define G(x, y, z) (((x) & (z)) | ((y) & (~(z)))) -+#define H(x, y, z) ((x) ^ (y) ^ (z)) -+#define I(x, y, z) ((y) ^ ((x) | (~(z)))) -+ -+ -+/*vetor de numeros utilizados pelo algoritmo md5 para embaralhar bits */ -+static const WORD32 T[64]={ -+ 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee, -+ 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501, -+ 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be, -+ 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821, -+ 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa, -+ 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8, -+ 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed, -+ 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a, -+ 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c, -+ 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70, -+ 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05, -+ 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665, -+ 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039, -+ 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1, -+ 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1, -+ 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391 -+}; -+ -+ -+static void word32tobytes (const WORD32 *input, char *output) { -+ int j = 0; -+ while (j<4*4) { -+ WORD32 v = *input++; -+ output[j++] = (char)(v & 0xff); v >>= 8; -+ output[j++] = (char)(v & 0xff); v >>= 8; -+ output[j++] = (char)(v & 0xff); v >>= 8; -+ output[j++] = (char)(v & 0xff); -+ } -+} -+ -+ -+static void inic_digest(WORD32 *d) { -+ d[0] = 0x67452301; -+ d[1] = 0xEFCDAB89; -+ d[2] = 0x98BADCFE; -+ d[3] = 0x10325476; -+} -+ -+ -+/*funcao que implemeta os quatro passos principais do algoritmo MD5 */ -+static void digest(const WORD32 *m, WORD32 *d) { -+ int j; -+ /*MD5 PASSO1 */ -+ for (j=0; j<4*4; j+=4) { -+ d[0] = d[0]+ F(d[1], d[2], d[3])+ m[j] + T[j]; d[0]=rotate(d[0], 7); -+ d[0]+=d[1]; -+ d[3] = d[3]+ F(d[0], d[1], d[2])+ m[(j)+1] + T[j+1]; d[3]=rotate(d[3], 12); -+ d[3]+=d[0]; -+ d[2] = d[2]+ F(d[3], d[0], d[1])+ m[(j)+2] + T[j+2]; d[2]=rotate(d[2], 17); -+ d[2]+=d[3]; -+ d[1] = d[1]+ F(d[2], d[3], d[0])+ m[(j)+3] + T[j+3]; d[1]=rotate(d[1], 22); -+ d[1]+=d[2]; -+ } -+ /*MD5 PASSO2 */ -+ for (j=0; j<4*4; j+=4) { -+ d[0] = d[0]+ G(d[1], d[2], d[3])+ m[(5*j+1)&0x0f] + T[(j-1)+17]; -+ d[0] = rotate(d[0],5); -+ d[0]+=d[1]; -+ d[3] = d[3]+ G(d[0], d[1], d[2])+ m[((5*(j+1)+1)&0x0f)] + T[(j+0)+17]; -+ d[3] = rotate(d[3], 9); -+ d[3]+=d[0]; -+ d[2] = d[2]+ G(d[3], d[0], d[1])+ m[((5*(j+2)+1)&0x0f)] + T[(j+1)+17]; -+ d[2] = rotate(d[2], 14); -+ d[2]+=d[3]; -+ d[1] = d[1]+ G(d[2], d[3], d[0])+ m[((5*(j+3)+1)&0x0f)] + T[(j+2)+17]; -+ d[1] = rotate(d[1], 20); -+ d[1]+=d[2]; -+ } -+ /*MD5 PASSO3 */ -+ for (j=0; j<4*4; j+=4) { -+ d[0] = d[0]+ H(d[1], d[2], d[3])+ m[(3*j+5)&0x0f] + T[(j-1)+33]; -+ d[0] = rotate(d[0], 4); -+ d[0]+=d[1]; -+ d[3] = d[3]+ H(d[0], d[1], d[2])+ m[(3*(j+1)+5)&0x0f] + T[(j+0)+33]; -+ d[3] = rotate(d[3], 11); -+ d[3]+=d[0]; -+ d[2] = d[2]+ H(d[3], d[0], d[1])+ m[(3*(j+2)+5)&0x0f] + T[(j+1)+33]; -+ d[2] = rotate(d[2], 16); -+ d[2]+=d[3]; -+ d[1] = d[1]+ H(d[2], d[3], d[0])+ m[(3*(j+3)+5)&0x0f] + T[(j+2)+33]; -+ d[1] = rotate(d[1], 23); -+ d[1]+=d[2]; -+ } -+ /*MD5 PASSO4 */ -+ for (j=0; j<4*4; j+=4) { -+ d[0] = d[0]+ I(d[1], d[2], d[3])+ m[(7*j)&0x0f] + T[(j-1)+49]; -+ d[0] = rotate(d[0], 6); -+ d[0]+=d[1]; -+ d[3] = d[3]+ I(d[0], d[1], d[2])+ m[(7*(j+1))&0x0f] + T[(j+0)+49]; -+ d[3] = rotate(d[3], 10); -+ d[3]+=d[0]; -+ d[2] = d[2]+ I(d[3], d[0], d[1])+ m[(7*(j+2))&0x0f] + T[(j+1)+49]; -+ d[2] = rotate(d[2], 15); -+ d[2]+=d[3]; -+ d[1] = d[1]+ I(d[2], d[3], d[0])+ m[(7*(j+3))&0x0f] + T[(j+2)+49]; -+ d[1] = rotate(d[1], 21); -+ d[1]+=d[2]; -+ } -+} -+ -+ -+static void bytestoword32 (WORD32 *x, const char *pt) { -+ int i; -+ for (i=0; i<16; i++) { -+ int j=i*4; -+ x[i] = (((WORD32)(unsigned char)pt[j+3] << 8 | -+ (WORD32)(unsigned char)pt[j+2]) << 8 | -+ (WORD32)(unsigned char)pt[j+1]) << 8 | -+ (WORD32)(unsigned char)pt[j]; -+ } -+ -+} -+ -+ -+static void put_length(WORD32 *x, long len) { -+ /* in bits! */ -+ x[14] = (WORD32)((len<<3) & MASK); -+ x[15] = (WORD32)(len>>(32-3) & 0x7); -+} -+ -+ -+/* -+** returned status: -+* 0 - normal message (full 64 bytes) -+* 1 - enough room for 0x80, but not for message length (two 4-byte words) -+* 2 - enough room for 0x80 plus message length (at least 9 bytes free) -+*/ -+static int converte (WORD32 *x, const char *pt, int num, int old_status) { -+ int new_status = 0; -+ char buff[64]; -+ if (num<64) { -+ memcpy(buff, pt, num); /* to avoid changing original string */ -+ memset(buff+num, 0, 64-num); -+ if (old_status == 0) -+ buff[num] = '\200'; -+ new_status = 1; -+ pt = buff; -+ } -+ bytestoword32(x, pt); -+ if (num <= (64 - 9)) -+ new_status = 2; -+ return new_status; -+} -+ -+ -+ -+void md5 (const char *message, long len, char *output) { -+ WORD32 d[4]; -+ int status = 0; -+ long i = 0; -+ inic_digest(d); -+ while (status != 2) { -+ WORD32 d_old[4]; -+ WORD32 wbuff[16]; -+ int numbytes = (len-i >= 64) ? 64 : len-i; -+ /*salva os valores do vetor digest*/ -+ d_old[0]=d[0]; d_old[1]=d[1]; d_old[2]=d[2]; d_old[3]=d[3]; -+ status = converte(wbuff, message+i, numbytes, status); -+ if (status == 2) put_length(wbuff, len); -+ digest(wbuff, d); -+ d[0]+=d_old[0]; d[1]+=d_old[1]; d[2]+=d_old[2]; d[3]+=d_old[3]; -+ i += numbytes; -+ } -+ word32tobytes(d, output); -+} -+ -diff -Nur lua-5.1.4.orig/src/md5.h lua-5.1.4/src/md5.h ---- lua-5.1.4.orig/src/md5.h 1970-01-01 01:00:00.000000000 +0100 -+++ lua-5.1.4/src/md5.h 2009-04-27 00:49:13.000000000 +0200 -@@ -0,0 +1,20 @@ -+/** -+* $Id: md5.h,v 1.2 2006/03/03 15:04:49 tomas Exp $ -+* Cryptographic module for Lua. -+* @author Roberto Ierusalimschy -+*/ -+ -+ -+#ifndef md5_h -+#define md5_h -+ -+#include "lua.h" -+ -+ -+#define HASHSIZE 16 -+ -+void md5 (const char *message, long len, char *output); -+int luaopen_md5_core (lua_State *L); -+ -+ -+#endif -diff -Nur lua-5.1.4.orig/src/md5lib.c lua-5.1.4/src/md5lib.c ---- lua-5.1.4.orig/src/md5lib.c 1970-01-01 01:00:00.000000000 +0100 -+++ lua-5.1.4/src/md5lib.c 2009-04-27 00:49:55.000000000 +0200 -@@ -0,0 +1,203 @@ -+/** -+* $Id: md5lib.c,v 1.10 2008/05/12 20:51:27 carregal Exp $ -+* Cryptographic and Hash functions for Lua -+* @author Roberto Ierusalimschy -+*/ -+ -+ -+#include -+#include -+#include -+ -+#include "lua.h" -+#include "lauxlib.h" -+ -+#if ! defined (LUA_VERSION_NUM) || LUA_VERSION_NUM < 501 -+#include "compat-5.1.h" -+#endif -+ -+#include "md5.h" -+ -+ -+/** -+* Hash function. Returns a hash for a given string. -+* @param message: arbitrary binary string. -+* @return A 128-bit hash string. -+*/ -+static int lmd5 (lua_State *L) { -+ char buff[16]; -+ size_t l; -+ const char *message = luaL_checklstring(L, 1, &l); -+ md5(message, l, buff); -+ lua_pushlstring(L, buff, 16L); -+ return 1; -+} -+ -+ -+/** -+* X-Or. Does a bit-a-bit exclusive-or of two strings. -+* @param s1: arbitrary binary string. -+* @param s2: arbitrary binary string with same length as s1. -+* @return a binary string with same length as s1 and s2, -+* where each bit is the exclusive-or of the corresponding bits in s1-s2. -+*/ -+static int ex_or (lua_State *L) { -+ size_t l1, l2; -+ const char *s1 = luaL_checklstring(L, 1, &l1); -+ const char *s2 = luaL_checklstring(L, 2, &l2); -+ luaL_Buffer b; -+ luaL_argcheck( L, l1 == l2, 2, "lengths must be equal" ); -+ luaL_buffinit(L, &b); -+ while (l1--) luaL_putchar(&b, (*s1++)^(*s2++)); -+ luaL_pushresult(&b); -+ return 1; -+} -+ -+ -+static void checkseed (lua_State *L) { -+ if (lua_isnone(L, 3)) { /* no seed? */ -+ time_t tm = time(NULL); /* for `random' seed */ -+ lua_pushlstring(L, (char *)&tm, sizeof(tm)); -+ } -+} -+ -+ -+#define MAXKEY 256 -+#define BLOCKSIZE 16 -+ -+ -+ -+static int initblock (lua_State *L, const char *seed, int lseed, char *block) { -+ size_t lkey; -+ const char *key = luaL_checklstring(L, 2, &lkey); -+ if (lkey > MAXKEY) -+ luaL_error(L, "key too long (> %d)", MAXKEY); -+ memset(block, 0, BLOCKSIZE); -+ memcpy(block, seed, lseed); -+ memcpy(block+BLOCKSIZE, key, lkey); -+ return (int)lkey+BLOCKSIZE; -+} -+ -+ -+static void codestream (lua_State *L, const char *msg, size_t lmsg, -+ char *block, int lblock) { -+ luaL_Buffer b; -+ luaL_buffinit(L, &b); -+ while (lmsg > 0) { -+ char code[BLOCKSIZE]; -+ int i; -+ md5(block, lblock, code); -+ for (i=0; i 0; i++, lmsg--) -+ code[i] ^= *msg++; -+ luaL_addlstring(&b, code, i); -+ memcpy(block, code, i); /* update seed */ -+ } -+ luaL_pushresult(&b); -+} -+ -+ -+static void decodestream (lua_State *L, const char *cypher, size_t lcypher, -+ char *block, int lblock) { -+ luaL_Buffer b; -+ luaL_buffinit(L, &b); -+ while (lcypher > 0) { -+ char code[BLOCKSIZE]; -+ int i; -+ md5(block, lblock, code); /* update seed */ -+ for (i=0; i 0; i++, lcypher--) -+ code[i] ^= *cypher++; -+ luaL_addlstring(&b, code, i); -+ memcpy(block, cypher-i, i); -+ } -+ luaL_pushresult(&b); -+} -+ -+ -+/** -+* Encrypts a string. Uses the hash function md5 in CFB (Cipher-feedback -+* mode). -+* @param message: arbitrary binary string to be encrypted. -+* @param key: arbitrary binary string to be used as a key. -+* @param [seed]: optional arbitrary binary string to be used as a seed. -+* if no seed is provided, the function uses the result of -+* time() as a seed. -+* @return The cyphertext (as a binary string). -+*/ -+static int crypt (lua_State *L) { -+ size_t lmsg; -+ const char *msg = luaL_checklstring(L, 1, &lmsg); -+ size_t lseed; -+ const char *seed; -+ int lblock; -+ char block[BLOCKSIZE+MAXKEY]; -+ checkseed(L); -+ seed = luaL_checklstring(L, 3, &lseed); -+ if (lseed > BLOCKSIZE) -+ luaL_error(L, "seed too long (> %d)", BLOCKSIZE); -+ /* put seed and seed length at the beginning of result */ -+ block[0] = (char)lseed; -+ memcpy(block+1, seed, lseed); -+ lua_pushlstring(L, block, lseed+1); /* to concat with result */ -+ lblock = initblock(L, seed, lseed, block); -+ codestream(L, msg, lmsg, block, lblock); -+ lua_concat(L, 2); -+ return 1; -+} -+ -+ -+/** -+* Decrypts a string. For any message, key, and seed, we have that -+* decrypt(crypt(msg, key, seed), key) == msg. -+* @param cyphertext: message to be decrypted (this must be the result of -+ a previous call to crypt. -+* @param key: arbitrary binary string to be used as a key. -+* @return The plaintext. -+*/ -+static int decrypt (lua_State *L) { -+ size_t lcyphertext; -+ const char *cyphertext = luaL_checklstring(L, 1, &lcyphertext); -+ size_t lseed = cyphertext[0]; -+ const char *seed = cyphertext+1; -+ int lblock; -+ char block[BLOCKSIZE+MAXKEY]; -+ luaL_argcheck(L, lcyphertext >= lseed+1 && lseed <= BLOCKSIZE, 1, -+ "invalid cyphered string"); -+ cyphertext += lseed+1; -+ lcyphertext -= lseed+1; -+ lblock = initblock(L, seed, lseed, block); -+ decodestream(L, cyphertext, lcyphertext, block, lblock); -+ return 1; -+} -+ -+ -+/* -+** Assumes the table is on top of the stack. -+*/ -+static void set_info (lua_State *L) { -+ lua_pushliteral (L, "_COPYRIGHT"); -+ lua_pushliteral (L, "Copyright (C) 2003 PUC-Rio"); -+ lua_settable (L, -3); -+ lua_pushliteral (L, "_DESCRIPTION"); -+ lua_pushliteral (L, "Basic cryptographic facilities"); -+ lua_settable (L, -3); -+ lua_pushliteral (L, "_VERSION"); -+ lua_pushliteral (L, "MD5 1.1.2"); -+ lua_settable (L, -3); -+} -+ -+ -+static struct luaL_reg md5lib[] = { -+ {"sum", lmd5}, -+ {"exor", ex_or}, -+ {"crypt", crypt}, -+ {"decrypt", decrypt}, -+ {NULL, NULL} -+}; -+ -+ -+int luaopen_md5_core (lua_State *L) { -+ luaL_register(L, "md5", md5lib); -+ set_info (L); -+ return 1; -+} -+