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-rw-r--r--util-src/encodings.c347
1 files changed, 205 insertions, 142 deletions
diff --git a/util-src/encodings.c b/util-src/encodings.c
index 91826ca4..2eaad2c8 100644
--- a/util-src/encodings.c
+++ b/util-src/encodings.c
@@ -2,7 +2,7 @@
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
-- Copyright (C) 1994-2015 Lua.org, PUC-Rio.
---
+--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
@@ -21,97 +21,131 @@
#include "lua.h"
#include "lauxlib.h"
+#if (LUA_VERSION_NUM == 502)
+#define luaL_register(L, N, R) luaL_setfuncs(L, R, 0)
+#endif
+
/***************** BASE64 *****************/
-static const char code[]=
-"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+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);
+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];
+
+ 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);
+
+ for(i = n + 1; i < 4; i++) {
+ s[i] = '=';
+ }
+
+ luaL_addlstring(b, s, 4);
}
-static int Lbase64_encode(lua_State *L) /** encode(s) */
-{
+static int Lbase64_encode(lua_State* L) { /** encode(s) */
size_t l;
- const unsigned char *s=(const unsigned char*)luaL_checklstring(L,1,&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_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));
+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);
+
+ 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);
+
+ luaL_addlstring(b, s, n);
}
-static int Lbase64_decode(lua_State *L) /** decode(s) */
-{
+static int Lbase64_decode(lua_State* L) { /** decode(s) */
size_t l;
- const char *s=luaL_checklstring(L,1,&l);
+ const char* s = luaL_checklstring(L, 1, &l);
luaL_Buffer b;
- int n=0;
+ int n = 0;
char t[4];
- luaL_buffinit(L,&b);
- for (;;)
- {
- int c=*s++;
- switch (c)
- {
- const char *p;
+ 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;
+ 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;
+
+ 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;
+
+ n = 0;
break;
case 0:
luaL_pushresult(&b);
return 1;
- case '\n': case '\r': case '\t': case ' ': case '\f': case '\b':
+ case '\n':
+ case '\r':
+ case '\t':
+ case ' ':
+ case '\f':
+ case '\b':
break;
}
}
}
-static const luaL_Reg Reg_base64[] =
-{
+static const luaL_Reg Reg_base64[] = {
{ "encode", Lbase64_encode },
{ "decode", Lbase64_decode },
{ NULL, NULL }
@@ -129,70 +163,89 @@ static const luaL_Reg Reg_base64[] =
/*
* Decode one UTF-8 sequence, returning NULL if byte sequence is invalid.
*/
-static const char *utf8_decode (const char *o, int *val) {
+static const char* utf8_decode(const char* o, int* val) {
static unsigned int limits[] = {0xFF, 0x7F, 0x7FF, 0xFFFF};
- const unsigned char *s = (const unsigned char *)o;
+ const unsigned char* s = (const unsigned char*)o;
unsigned int c = s[0];
unsigned int res = 0; /* final result */
- if (c < 0x80) /* ascii? */
+
+ if(c < 0x80) { /* ascii? */
res = c;
- else {
+ } else {
int count = 0; /* to count number of continuation bytes */
- while (c & 0x40) { /* still have continuation bytes? */
+
+ while(c & 0x40) { /* still have continuation bytes? */
int cc = s[++count]; /* read next byte */
- if ((cc & 0xC0) != 0x80) /* not a continuation byte? */
- return NULL; /* invalid byte sequence */
+
+ if((cc & 0xC0) != 0x80) { /* not a continuation byte? */
+ return NULL; /* invalid byte sequence */
+ }
+
res = (res << 6) | (cc & 0x3F); /* add lower 6 bits from cont. byte */
c <<= 1; /* to test next bit */
}
+
res |= ((c & 0x7F) << (count * 5)); /* add first byte */
- if (count > 3 || res > MAXUNICODE || res <= limits[count] || (0xd800 <= res && res <= 0xdfff) )
- return NULL; /* invalid byte sequence */
+
+ if(count > 3 || res > MAXUNICODE || res <= limits[count] || (0xd800 <= res && res <= 0xdfff)) {
+ return NULL; /* invalid byte sequence */
+ }
+
s += count; /* skip continuation bytes read */
}
- if (val) *val = res;
- return (const char *)s + 1; /* +1 to include first byte */
+
+ if(val) {
+ *val = res;
+ }
+
+ return (const char*)s + 1; /* +1 to include first byte */
}
/*
* Check that a string is valid UTF-8
* Returns NULL if not
*/
-const char* check_utf8 (lua_State *L, int idx, size_t *l) {
+const char* check_utf8(lua_State* L, int idx, size_t* l) {
size_t pos, len;
- const char *s = luaL_checklstring(L, 1, &len);
+ const char* s = luaL_checklstring(L, 1, &len);
pos = 0;
- while (pos <= len) {
- const char *s1 = utf8_decode(s + pos, NULL);
- if (s1 == NULL) { /* conversion error? */
+
+ while(pos <= len) {
+ const char* s1 = utf8_decode(s + pos, NULL);
+
+ if(s1 == NULL) { /* conversion error? */
return NULL;
}
+
pos = s1 - s;
}
+
if(l != NULL) {
*l = len;
}
+
return s;
}
-static int Lutf8_valid(lua_State *L) {
+static int Lutf8_valid(lua_State* L) {
lua_pushboolean(L, check_utf8(L, 1, NULL) != NULL);
return 1;
}
-static int Lutf8_length(lua_State *L) {
+static int Lutf8_length(lua_State* L) {
size_t len;
+
if(!check_utf8(L, 1, &len)) {
lua_pushnil(L);
lua_pushliteral(L, "invalid utf8");
return 2;
}
+
lua_pushinteger(L, len);
return 1;
}
-static const luaL_Reg Reg_utf8[] =
-{
+static const luaL_Reg Reg_utf8[] = {
{ "valid", Lutf8_valid },
{ "length", Lutf8_length },
{ NULL, NULL }
@@ -206,61 +259,71 @@ static const luaL_Reg Reg_utf8[] =
#include <unicode/ustring.h>
#include <unicode/utrace.h>
-static int icu_stringprep_prep(lua_State *L, const UStringPrepProfile *profile)
-{
+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;
+ 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) {
+
+ if(input_len >= 1024) {
lua_pushnil(L);
return 1;
}
+
u_strFromUTF8(unprepped, 1024, &unprepped_len, input, input_len, &err);
- if (U_FAILURE(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)) {
+
+ 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)
+
+ if(U_SUCCESS(err) && output_len < 1024) {
lua_pushlstring(L, output, output_len);
- else
+ } else {
lua_pushnil(L);
+ }
+
return 1;
}
}
-UStringPrepProfile *icu_nameprep;
-UStringPrepProfile *icu_nodeprep;
-UStringPrepProfile *icu_resourceprep;
-UStringPrepProfile *icu_saslprep;
+UStringPrepProfile* icu_nameprep;
+UStringPrepProfile* icu_nodeprep;
+UStringPrepProfile* icu_resourceprep;
+UStringPrepProfile* icu_saslprep;
/* initialize global ICU stringprep profiles */
-void init_icu()
-{
+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));
+
+ if(U_FAILURE(err)) {
+ fprintf(stderr, "[c] util.encodings: error: %s\n", u_errorName((UErrorCode)err));
+ }
}
#define MAKE_PREP_FUNC(myFunc, prep) \
@@ -271,8 +334,7 @@ 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[] =
-{
+static const luaL_Reg Reg_stringprep[] = {
{ "nameprep", Lstringprep_nameprep },
{ "nodeprep", Lstringprep_nodeprep },
{ "resourceprep", Lstringprep_resourceprep },
@@ -285,24 +347,28 @@ static const luaL_Reg Reg_stringprep[] =
#include <stringprep.h>
-static int stringprep_prep(lua_State *L, const Stringprep_profile *profile)
-{
+static int stringprep_prep(lua_State* L, const Stringprep_profile* profile) {
size_t len;
- const char *s;
+ const char* s;
char string[1024];
int ret;
+
if(!lua_isstring(L, 1)) {
lua_pushnil(L);
return 1;
}
+
s = check_utf8(L, 1, &len);
- if (s == NULL || len >= 1024 || len != strlen(s)) {
+
+ if(s == NULL || len >= 1024 || len != strlen(s)) {
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) {
+
+ if(ret == STRINGPREP_OK) {
lua_pushstring(L, string);
return 1;
} else {
@@ -319,8 +385,7 @@ MAKE_PREP_FUNC(Lstringprep_nodeprep, stringprep_xmpp_nodeprep) /** stringprep.n
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[] =
-{
+static const luaL_Reg Reg_stringprep[] = {
{ "nameprep", Lstringprep_nameprep },
{ "nodeprep", Lstringprep_nodeprep },
{ "resourceprep", Lstringprep_resourceprep },
@@ -334,62 +399,70 @@ static const luaL_Reg Reg_stringprep[] =
#include <unicode/ustdio.h>
#include <unicode/uidna.h>
/* IDNA2003 or IDNA2008 ? ? ? */
-static int Lidna_to_ascii(lua_State *L) /** idna.to_ascii(s) */
-{
+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);
+ 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)) {
+
+ 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)) {
+
+ 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)
+
+ if(U_SUCCESS(err) && output_len < 1024) {
lua_pushlstring(L, output, output_len);
- else
+ } else {
lua_pushnil(L);
+ }
+
return 1;
}
}
-static int Lidna_to_unicode(lua_State *L) /** idna.to_unicode(s) */
-{
+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);
+ 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)) {
+
+ 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)) {
+
+ 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)
+
+ if(U_SUCCESS(err) && output_len < 1024) {
lua_pushlstring(L, output, output_len);
- else
+ } else {
lua_pushnil(L);
+ }
+
return 1;
}
}
@@ -400,17 +473,19 @@ static int Lidna_to_unicode(lua_State *L) /** idna.to_unicode(s) */
#include <idna.h>
#include <idn-free.h>
-static int Lidna_to_ascii(lua_State *L) /** idna.to_ascii(s) */
-{
+static int Lidna_to_ascii(lua_State* L) { /** idna.to_ascii(s) */
size_t len;
- const char *s = check_utf8(L, 1, &len);
- if (s == NULL || len != strlen(s)) {
+ const char* s = check_utf8(L, 1, &len);
+
+ if(s == NULL || len != strlen(s)) {
lua_pushnil(L);
return 1; /* TODO return error message */
}
+
char* output = NULL;
int ret = idna_to_ascii_8z(s, &output, IDNA_USE_STD3_ASCII_RULES);
- if (ret == IDNA_SUCCESS) {
+
+ if(ret == IDNA_SUCCESS) {
lua_pushstring(L, output);
idn_free(output);
return 1;
@@ -421,13 +496,13 @@ static int Lidna_to_ascii(lua_State *L) /** idna.to_ascii(s) */
}
}
-static int Lidna_to_unicode(lua_State *L) /** idna.to_unicode(s) */
-{
+static int Lidna_to_unicode(lua_State* L) { /** idna.to_unicode(s) */
size_t len;
- const char *s = luaL_checklstring(L, 1, &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) {
+
+ if(ret == IDNA_SUCCESS) {
lua_pushstring(L, output);
idn_free(output);
return 1;
@@ -439,8 +514,7 @@ static int Lidna_to_unicode(lua_State *L) /** idna.to_unicode(s) */
}
#endif
-static const luaL_Reg Reg_idna[] =
-{
+static const luaL_Reg Reg_idna[] = {
{ "to_ascii", Lidna_to_ascii },
{ "to_unicode", Lidna_to_unicode },
{ NULL, NULL }
@@ -448,40 +522,29 @@ static const luaL_Reg Reg_idna[] =
/***************** end *****************/
-static const luaL_Reg Reg[] =
-{
- { NULL, NULL }
-};
-
-LUALIB_API int luaopen_util_encodings(lua_State *L)
-{
+LUALIB_API int luaopen_util_encodings(lua_State* L) {
#ifdef USE_STRINGPREP_ICU
init_icu();
#endif
- luaL_register(L, "encodings", Reg);
+ lua_newtable(L);
- lua_pushliteral(L, "base64");
lua_newtable(L);
luaL_register(L, NULL, Reg_base64);
- lua_settable(L,-3);
+ lua_setfield(L, -2, "base64");
- lua_pushliteral(L, "stringprep");
lua_newtable(L);
luaL_register(L, NULL, Reg_stringprep);
- lua_settable(L,-3);
+ lua_setfield(L, -2, "stringprep");
- lua_pushliteral(L, "idna");
lua_newtable(L);
luaL_register(L, NULL, Reg_idna);
- lua_settable(L,-3);
+ lua_setfield(L, -2, "idna");
- lua_pushliteral(L, "utf8");
lua_newtable(L);
luaL_register(L, NULL, Reg_utf8);
- lua_settable(L, -3);
+ lua_setfield(L, -2, "utf8");
- lua_pushliteral(L, "version"); /** version */
lua_pushliteral(L, "-3.14");
- lua_settable(L,-3);
+ lua_setfield(L, -2, "version");
return 1;
}
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