diff -r 72a917d910a4 -r f02bac902a1e util-src/encodings.c --- a/util-src/encodings.c Fri Dec 10 00:23:47 2010 +0500 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,243 +0,0 @@ -/* Prosody IM --- Copyright (C) 2008-2010 Matthew Wild --- Copyright (C) 2008-2010 Waqas Hussain --- --- This project is MIT/X11 licensed. Please see the --- COPYING file in the source package for more information. --- -*/ - -/* -* encodings.c -* Lua library for base64, stringprep and idna encodings -*/ - -// Newer MSVC compilers deprecate strcpy as unsafe, but we use it in a safe way -#define _CRT_SECURE_NO_DEPRECATE - -#include -#include - -#include "lua.h" -#include "lauxlib.h" - -/***************** BASE64 *****************/ - -static const char code[]= -"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; - -static void base64_encode(luaL_Buffer *b, unsigned int c1, unsigned int c2, unsigned int c3, int n) -{ - unsigned long tuple=c3+256UL*(c2+256UL*c1); - int i; - char s[4]; - for (i=0; i<4; i++) { - s[3-i] = code[tuple % 64]; - tuple /= 64; - } - for (i=n+1; i<4; i++) s[i]='='; - luaL_addlstring(b,s,4); -} - -static int Lbase64_encode(lua_State *L) /** encode(s) */ -{ - size_t l; - const unsigned char *s=(const unsigned char*)luaL_checklstring(L,1,&l); - luaL_Buffer b; - int n; - luaL_buffinit(L,&b); - for (n=l/3; n--; s+=3) base64_encode(&b,s[0],s[1],s[2],3); - switch (l%3) - { - case 1: base64_encode(&b,s[0],0,0,1); break; - case 2: base64_encode(&b,s[0],s[1],0,2); break; - } - luaL_pushresult(&b); - return 1; -} - -static void base64_decode(luaL_Buffer *b, int c1, int c2, int c3, int c4, int n) -{ - unsigned long tuple=c4+64L*(c3+64L*(c2+64L*c1)); - char s[3]; - switch (--n) - { - case 3: s[2]=(char) tuple; - case 2: s[1]=(char) (tuple >> 8); - case 1: s[0]=(char) (tuple >> 16); - } - luaL_addlstring(b,s,n); -} - -static int Lbase64_decode(lua_State *L) /** decode(s) */ -{ - size_t l; - const char *s=luaL_checklstring(L,1,&l); - luaL_Buffer b; - int n=0; - char t[4]; - luaL_buffinit(L,&b); - for (;;) - { - int c=*s++; - switch (c) - { - const char *p; - default: - p=strchr(code,c); if (p==NULL) return 0; - t[n++]= (char) (p-code); - if (n==4) - { - base64_decode(&b,t[0],t[1],t[2],t[3],4); - n=0; - } - break; - case '=': - switch (n) - { - case 1: base64_decode(&b,t[0],0,0,0,1); break; - case 2: base64_decode(&b,t[0],t[1],0,0,2); break; - case 3: base64_decode(&b,t[0],t[1],t[2],0,3); break; - } - n=0; - break; - case 0: - luaL_pushresult(&b); - return 1; - case '\n': case '\r': case '\t': case ' ': case '\f': case '\b': - break; - } - } -} - -static const luaL_Reg Reg_base64[] = -{ - { "encode", Lbase64_encode }, - { "decode", Lbase64_decode }, - { NULL, NULL } -}; - -/***************** STRINGPREP *****************/ - -#include - -static int stringprep_prep(lua_State *L, const Stringprep_profile *profile) -{ - size_t len; - const char *s; - char string[1024]; - int ret; - if(!lua_isstring(L, 1)) { - lua_pushnil(L); - return 1; - } - s = lua_tolstring(L, 1, &len); - if (len >= 1024) { - lua_pushnil(L); - return 1; // TODO return error message - } - strcpy(string, s); - ret = stringprep(string, 1024, 0, profile); - if (ret == STRINGPREP_OK) { - lua_pushstring(L, string); - return 1; - } else { - lua_pushnil(L); - return 1; // TODO return error message - } -} - -#define MAKE_PREP_FUNC(myFunc, prep) \ -static int myFunc(lua_State *L) { return stringprep_prep(L, prep); } - -MAKE_PREP_FUNC(Lstringprep_nameprep, stringprep_nameprep) /** stringprep.nameprep(s) */ -MAKE_PREP_FUNC(Lstringprep_nodeprep, stringprep_xmpp_nodeprep) /** stringprep.nodeprep(s) */ -MAKE_PREP_FUNC(Lstringprep_resourceprep, stringprep_xmpp_resourceprep) /** stringprep.resourceprep(s) */ -MAKE_PREP_FUNC(Lstringprep_saslprep, stringprep_saslprep) /** stringprep.saslprep(s) */ - -static const luaL_Reg Reg_stringprep[] = -{ - { "nameprep", Lstringprep_nameprep }, - { "nodeprep", Lstringprep_nodeprep }, - { "resourceprep", Lstringprep_resourceprep }, - { "saslprep", Lstringprep_saslprep }, - { NULL, NULL } -}; - -/***************** IDNA *****************/ - -#include -#include - -static int Lidna_to_ascii(lua_State *L) /** idna.to_ascii(s) */ -{ - size_t len; - const char *s = luaL_checklstring(L, 1, &len); - char* output = NULL; - int ret = idna_to_ascii_8z(s, &output, IDNA_USE_STD3_ASCII_RULES); - if (ret == IDNA_SUCCESS) { - lua_pushstring(L, output); - idn_free(output); - return 1; - } else { - lua_pushnil(L); - idn_free(output); - return 1; // TODO return error message - } -} - -static int Lidna_to_unicode(lua_State *L) /** idna.to_unicode(s) */ -{ - size_t len; - const char *s = luaL_checklstring(L, 1, &len); - char* output = NULL; - int ret = idna_to_unicode_8z8z(s, &output, 0); - if (ret == IDNA_SUCCESS) { - lua_pushstring(L, output); - idn_free(output); - return 1; - } else { - lua_pushnil(L); - idn_free(output); - return 1; // TODO return error message - } -} - -static const luaL_Reg Reg_idna[] = -{ - { "to_ascii", Lidna_to_ascii }, - { "to_unicode", Lidna_to_unicode }, - { NULL, NULL } -}; - -/***************** end *****************/ - -static const luaL_Reg Reg[] = -{ - { NULL, NULL } -}; - -LUALIB_API int luaopen_util_encodings(lua_State *L) -{ - luaL_register(L, "encodings", Reg); - - lua_pushliteral(L, "base64"); - lua_newtable(L); - luaL_register(L, NULL, Reg_base64); - lua_settable(L,-3); - - lua_pushliteral(L, "stringprep"); - lua_newtable(L); - luaL_register(L, NULL, Reg_stringprep); - lua_settable(L,-3); - - lua_pushliteral(L, "idna"); - lua_newtable(L); - luaL_register(L, NULL, Reg_idna); - lua_settable(L,-3); - - lua_pushliteral(L, "version"); /** version */ - lua_pushliteral(L, "-3.14"); - lua_settable(L,-3); - return 1; -}