diff options
Diffstat (limited to 'util-src/encodings.c')
| -rw-r--r-- | util-src/encodings.c | 471 |
1 files changed, 230 insertions, 241 deletions
diff --git a/util-src/encodings.c b/util-src/encodings.c index 6697fc2f..ef45f4d4 100644 --- a/util-src/encodings.c +++ b/util-src/encodings.c @@ -1,249 +1,238 @@ -/* Prosody IM v0.1 --- Copyright (C) 2008 Matthew Wild --- Copyright (C) 2008 Waqas Hussain +/* Prosody IM v0.3 +-- Copyright (C) 2008-2009 Matthew Wild +-- Copyright (C) 2008-2009 Waqas Hussain -- --- This program is free software; you can redistribute it and/or --- modify it under the terms of the GNU General Public License --- as published by the Free Software Foundation; either version 2 --- of the License, or (at your option) any later version. --- --- This program is distributed in the hope that it will be useful, --- but WITHOUT ANY WARRANTY; without even the implied warranty of --- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the --- GNU General Public License for more details. --- --- You should have received a copy of the GNU General Public License --- along with this program; if not, write to the Free Software --- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +-- 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 <string.h> +#include <stdlib.h> + +#include "lua.h" +#include "lauxlib.h" + +/***************** BASE64 *****************/ + +static const char code[]= +"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; -/*
-* 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 <string.h>
-#include <stdlib.h>
-
-#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 (;;)
- {
+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;
+ 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;
- }
- }
- return 0;
-}
-
-static const luaL_Reg Reg_base64[] =
-{
- { "encode", Lbase64_encode },
- { "decode", Lbase64_decode },
- { NULL, NULL }
-};
-
-/***************** STRINGPREP *****************/
-
-#include <stringprep.h>
-
-static int stringprep_prep(lua_State *L, const Stringprep_profile *profile)
-{
- size_t len;
- const char *s = luaL_checklstring(L, 1, &len);
- char string[1024];
- int ret;
- 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 <idna.h>
-
-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, 0);
- if (ret == IDNA_SUCCESS) {
- lua_pushstring(L, output);
- if (output) free(output);
- return 1;
- } else {
- lua_pushnil(L);
- if (output) 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);
- if (output) free(output);
- return 1;
- } else {
- lua_pushnil(L);
- if (output) 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;
-}
+ break; + case 0: + luaL_pushresult(&b); + return 1; + case '\n': case '\r': case '\t': case ' ': case '\f': case '\b': + break; + } + } + return 0; +} + +static const luaL_Reg Reg_base64[] = +{ + { "encode", Lbase64_encode }, + { "decode", Lbase64_decode }, + { NULL, NULL } +}; + +/***************** STRINGPREP *****************/ + +#include <stringprep.h> + +static int stringprep_prep(lua_State *L, const Stringprep_profile *profile) +{ + size_t len; + const char *s = luaL_checklstring(L, 1, &len); + char string[1024]; + int ret; + 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 <idna.h> + +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, 0); + if (ret == IDNA_SUCCESS) { + lua_pushstring(L, output); + if (output) free(output); + return 1; + } else { + lua_pushnil(L); + if (output) 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); + if (output) free(output); + return 1; + } else { + lua_pushnil(L); + if (output) 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; +} |