-/*\r
-* encodings.c\r
-* Lua library for base64, stringprep and idna encodings\r
-*/\r
-\r
-// Newer MSVC compilers deprecate strcpy as unsafe, but we use it in a safe way\r
-#define _CRT_SECURE_NO_DEPRECATE\r
-\r
-#include <string.h>\r
-#include <stdlib.h>\r
-\r
-#include "lua.h"\r
-#include "lauxlib.h"\r
-\r
-/***************** BASE64 *****************/\r
-\r
-#define uint unsigned int\r
-\r
-static const char code[]=\r
-"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";\r
-\r
-static void base64_encode(luaL_Buffer *b, uint c1, uint c2, uint c3, int n)\r
-{\r
- unsigned long tuple=c3+256UL*(c2+256UL*c1);\r
- int i;\r
- char s[4];\r
- for (i=0; i<4; i++) {\r
- s[3-i] = code[tuple % 64];\r
- tuple /= 64;\r
- }\r
- for (i=n+1; i<4; i++) s[i]='=';\r
- luaL_addlstring(b,s,4);\r
-}\r
-\r
-static int Lbase64_encode(lua_State *L) /** encode(s) */\r
-{\r
- size_t l;\r
- const unsigned char *s=(const unsigned char*)luaL_checklstring(L,1,&l);\r
- luaL_Buffer b;\r
- int n;\r
- luaL_buffinit(L,&b);\r
- for (n=l/3; n--; s+=3) base64_encode(&b,s[0],s[1],s[2],3);\r
- switch (l%3)\r
- {\r
- case 1: base64_encode(&b,s[0],0,0,1); break;\r
- case 2: base64_encode(&b,s[0],s[1],0,2); break;\r
- }\r
- luaL_pushresult(&b);\r
- return 1;\r
-}\r
-\r
-static void base64_decode(luaL_Buffer *b, int c1, int c2, int c3, int c4, int n)\r
-{\r
- unsigned long tuple=c4+64L*(c3+64L*(c2+64L*c1));\r
- char s[3];\r
- switch (--n)\r
- {\r
- case 3: s[2]=(char) tuple;\r
- case 2: s[1]=(char) (tuple >> 8);\r
- case 1: s[0]=(char) (tuple >> 16);\r
- }\r
- luaL_addlstring(b,s,n);\r
-}\r
-\r
-static int Lbase64_decode(lua_State *L) /** decode(s) */\r
-{\r
- size_t l;\r
- const char *s=luaL_checklstring(L,1,&l);\r
- luaL_Buffer b;\r
- int n=0;\r
- char t[4];\r
- luaL_buffinit(L,&b);\r
- for (;;)\r
- {\r
- int c=*s++;\r
- switch (c)\r
- {\r
- const char *p;\r
- default:\r
- p=strchr(code,c); if (p==NULL) return 0;\r
- t[n++]= (char) (p-code);\r
- if (n==4)\r
- {\r
- base64_decode(&b,t[0],t[1],t[2],t[3],4);\r
- n=0;\r
- }\r
- break;\r
- case '=':\r
- switch (n)\r
- {\r
- case 1: base64_decode(&b,t[0],0,0,0,1); break;\r
- case 2: base64_decode(&b,t[0],t[1],0,0,2); break;\r
- case 3: base64_decode(&b,t[0],t[1],t[2],0,3); break;\r
- }\r
- case 0:\r
- luaL_pushresult(&b);\r
- return 1;\r
- case '\n': case '\r': case '\t': case ' ': case '\f': case '\b':\r
- break;\r
- }\r
- }\r
- return 0;\r
-}\r
-\r
-static const luaL_Reg Reg_base64[] =\r
-{\r
- { "encode", Lbase64_encode },\r
- { "decode", Lbase64_decode },\r
- { NULL, NULL }\r
-};\r
-\r
-/***************** STRINGPREP *****************/\r
-\r
-#include <stringprep.h>\r
-\r
-static int stringprep_prep(lua_State *L, const Stringprep_profile *profile)\r
-{\r
- size_t len;\r
- const char *s = luaL_checklstring(L, 1, &len);\r
- char string[1024];\r
- int ret;\r
- if (len >= 1024) {\r
- lua_pushnil(L);\r
- return 1; // TODO return error message\r
- }\r
- strcpy(string, s);\r
- ret = stringprep(string, 1024, 0, profile);\r
- if (ret == STRINGPREP_OK) {\r
- lua_pushstring(L, string);\r
- return 1;\r
- } else {\r
- lua_pushnil(L);\r
- return 1; // TODO return error message\r
- }\r
-}\r
-\r
-#define MAKE_PREP_FUNC(myFunc, prep) \\r
-static int myFunc(lua_State *L) { return stringprep_prep(L, prep); }\r
-\r
-MAKE_PREP_FUNC(Lstringprep_nameprep, stringprep_nameprep) /** stringprep.nameprep(s) */\r
-MAKE_PREP_FUNC(Lstringprep_nodeprep, stringprep_xmpp_nodeprep) /** stringprep.nodeprep(s) */\r
-MAKE_PREP_FUNC(Lstringprep_resourceprep, stringprep_xmpp_resourceprep) /** stringprep.resourceprep(s) */\r
-MAKE_PREP_FUNC(Lstringprep_saslprep, stringprep_saslprep) /** stringprep.saslprep(s) */\r
-\r
-static const luaL_Reg Reg_stringprep[] =\r
-{\r
- { "nameprep", Lstringprep_nameprep },\r
- { "nodeprep", Lstringprep_nodeprep },\r
- { "resourceprep", Lstringprep_resourceprep },\r
- { "saslprep", Lstringprep_saslprep },\r
- { NULL, NULL }\r
-};\r
-\r
-/***************** IDNA *****************/\r
-\r
-#include <idna.h>\r
-\r
-static int Lidna_to_ascii(lua_State *L) /** idna.to_ascii(s) */\r
-{\r
- size_t len;\r
- const char *s = luaL_checklstring(L, 1, &len);\r
- char* output = NULL;\r
- int ret = idna_to_ascii_8z(s, &output, 0);\r
- if (ret == IDNA_SUCCESS) {\r
- lua_pushstring(L, output);\r
- if (output) free(output);\r
- return 1;\r
- } else {\r
- lua_pushnil(L);\r
- if (output) free(output);\r
- return 1; // TODO return error message\r
- }\r
-}\r
-\r
-static int Lidna_to_unicode(lua_State *L) /** idna.to_unicode(s) */\r
-{\r
- size_t len;\r
- const char *s = luaL_checklstring(L, 1, &len);\r
- char* output = NULL;\r
- int ret = idna_to_unicode_8z8z(s, &output, 0);\r
- if (ret == IDNA_SUCCESS) {\r
- lua_pushstring(L, output);\r
- if (output) free(output);\r
- return 1;\r
- } else {\r
- lua_pushnil(L);\r
- if (output) free(output);\r
- return 1; // TODO return error message\r
- }\r
-}\r
-\r
-static const luaL_Reg Reg_idna[] =\r
-{\r
- { "to_ascii", Lidna_to_ascii },\r
- { "to_unicode", Lidna_to_unicode },\r
- { NULL, NULL }\r
-};\r
-\r
-/***************** end *****************/\r
-\r
-static const luaL_Reg Reg[] =\r
-{\r
- { NULL, NULL }\r
-};\r
-\r
-LUALIB_API int luaopen_util_encodings(lua_State *L)\r
-{\r
- luaL_register(L, "encodings", Reg);\r
-\r
- lua_pushliteral(L, "base64");\r
- lua_newtable(L);\r
- luaL_register(L, NULL, Reg_base64);\r
- lua_settable(L,-3);\r
-\r
- lua_pushliteral(L, "stringprep");\r
- lua_newtable(L);\r
- luaL_register(L, NULL, Reg_stringprep);\r
- lua_settable(L,-3);\r
-\r
- lua_pushliteral(L, "idna");\r
- lua_newtable(L);\r
- luaL_register(L, NULL, Reg_idna);\r
- lua_settable(L,-3);\r
-\r
- lua_pushliteral(L, "version"); /** version */\r
- lua_pushliteral(L, "-3.14");\r
- lua_settable(L,-3);\r
- return 1;\r
-}\r
+/* 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 <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 (;;)
+ {
+ 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 *****************/
+#ifdef USE_STRINGPREP_ICU
+
+#include <unicode/usprep.h>
+#include <unicode/ustring.h>
+#include <unicode/utrace.h>
+
+static int icu_stringprep_prep(lua_State *L, const UStringPrepProfile *profile)
+{
+ size_t input_len;
+ int32_t unprepped_len, prepped_len, output_len;
+ const char *input;
+ char output[1024];
+
+ UChar unprepped[1024]; /* Temporary unicode buffer (1024 characters) */
+ UChar prepped[1024];
+
+ UErrorCode err = U_ZERO_ERROR;
+
+ if(!lua_isstring(L, 1)) {
+ lua_pushnil(L);
+ return 1;
+ }
+ input = lua_tolstring(L, 1, &input_len);
+ if (input_len >= 1024) {
+ lua_pushnil(L);
+ return 1;
+ }
+ u_strFromUTF8(unprepped, 1024, &unprepped_len, input, input_len, &err);
+ if (U_FAILURE(err)) {
+ lua_pushnil(L);
+ return 1;
+ }
+ prepped_len = usprep_prepare(profile, unprepped, unprepped_len, prepped, 1024, 0, NULL, &err);
+ if (U_FAILURE(err)) {
+ lua_pushnil(L);
+ return 1;
+ } else {
+ u_strToUTF8(output, 1024, &output_len, prepped, prepped_len, &err);
+ if (U_SUCCESS(err) && output_len < 1024)
+ lua_pushlstring(L, output, output_len);
+ else
+ lua_pushnil(L);
+ return 1;
+ }
+}
+
+UStringPrepProfile *icu_nameprep;
+UStringPrepProfile *icu_nodeprep;
+UStringPrepProfile *icu_resourceprep;
+UStringPrepProfile *icu_saslprep;
+
+/* initialize global ICU stringprep profiles */
+void init_icu()
+{
+ UErrorCode err = U_ZERO_ERROR;
+ utrace_setLevel(UTRACE_VERBOSE);
+ icu_nameprep = usprep_openByType(USPREP_RFC3491_NAMEPREP, &err);
+ icu_nodeprep = usprep_openByType(USPREP_RFC3920_NODEPREP, &err);
+ icu_resourceprep = usprep_openByType(USPREP_RFC3920_RESOURCEPREP, &err);
+ icu_saslprep = usprep_openByType(USPREP_RFC4013_SASLPREP, &err);
+ if (U_FAILURE(err)) fprintf(stderr, "[c] util.encodings: error: %s\n", u_errorName((UErrorCode)err));
+}
+
+#define MAKE_PREP_FUNC(myFunc, prep) \
+static int myFunc(lua_State *L) { return icu_stringprep_prep(L, prep); }
+
+MAKE_PREP_FUNC(Lstringprep_nameprep, icu_nameprep) /** stringprep.nameprep(s) */
+MAKE_PREP_FUNC(Lstringprep_nodeprep, icu_nodeprep) /** stringprep.nodeprep(s) */
+MAKE_PREP_FUNC(Lstringprep_resourceprep, icu_resourceprep) /** stringprep.resourceprep(s) */
+MAKE_PREP_FUNC(Lstringprep_saslprep, icu_saslprep) /** stringprep.saslprep(s) */
+
+static const luaL_Reg Reg_stringprep[] =
+{
+ { "nameprep", Lstringprep_nameprep },
+ { "nodeprep", Lstringprep_nodeprep },
+ { "resourceprep", Lstringprep_resourceprep },
+ { "saslprep", Lstringprep_saslprep },
+ { NULL, NULL }
+};
+#else /* USE_STRINGPREP_ICU */
+
+/****************** libidn ********************/
+
+#include <stringprep.h>
+
+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, (Stringprep_profile_flags)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 }
+};
+#endif
+
+/***************** IDNA *****************/
+#ifdef USE_STRINGPREP_ICU
+#include <unicode/ustdio.h>
+#include <unicode/uidna.h>
+/* IDNA2003 or IDNA2008 ? ? ? */
+static int Lidna_to_ascii(lua_State *L) /** idna.to_ascii(s) */
+{
+ size_t len;
+ int32_t ulen, dest_len, output_len;
+ const char *s = luaL_checklstring(L, 1, &len);
+ UChar ustr[1024];
+ UErrorCode err = U_ZERO_ERROR;
+ UChar dest[1024];
+ char output[1024];
+
+ u_strFromUTF8(ustr, 1024, &ulen, s, len, &err);
+ if (U_FAILURE(err)) {
+ lua_pushnil(L);
+ return 1;
+ }
+
+ dest_len = uidna_IDNToASCII(ustr, ulen, dest, 1024, UIDNA_USE_STD3_RULES, NULL, &err);
+ if (U_FAILURE(err)) {
+ lua_pushnil(L);
+ return 1;
+ } else {
+ u_strToUTF8(output, 1024, &output_len, dest, dest_len, &err);
+ if (U_SUCCESS(err) && output_len < 1024)
+ lua_pushlstring(L, output, output_len);
+ else
+ lua_pushnil(L);
+ return 1;
+ }
+}
+
+static int Lidna_to_unicode(lua_State *L) /** idna.to_unicode(s) */
+{
+ size_t len;
+ int32_t ulen, dest_len, output_len;
+ const char *s = luaL_checklstring(L, 1, &len);
+ UChar ustr[1024];
+ UErrorCode err = U_ZERO_ERROR;
+ UChar dest[1024];
+ char output[1024];
+
+ u_strFromUTF8(ustr, 1024, &ulen, s, len, &err);
+ if (U_FAILURE(err)) {
+ lua_pushnil(L);
+ return 1;
+ }
+
+ dest_len = uidna_IDNToUnicode(ustr, ulen, dest, 1024, UIDNA_USE_STD3_RULES, NULL, &err);
+ if (U_FAILURE(err)) {
+ lua_pushnil(L);
+ return 1;
+ } else {
+ u_strToUTF8(output, 1024, &output_len, dest, dest_len, &err);
+ if (U_SUCCESS(err) && output_len < 1024)
+ lua_pushlstring(L, output, output_len);
+ else
+ lua_pushnil(L);
+ return 1;
+ }
+}
+
+#else /* USE_STRINGPREP_ICU */
+/****************** libidn ********************/
+
+#include <idna.h>
+#include <idn-free.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, 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 */
+ }
+}
+#endif
+
+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)
+{
+#ifdef USE_STRINGPREP_ICU
+ init_icu();
+#endif
+ 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;
+}
projects / prosody.git / blobdiff