Diff

--- a/util-src/encodings.c	Fri Apr 03 06:38:22 2015 +0200
+++ b/util-src/encodings.c	Fri Apr 03 19:52:48 2015 +0200
@@ -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.
 --
@@ -27,95 +27,125 @@
 
 /***************** 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	}
@@ -133,70 +163,89 @@
 /*
  * 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	}
@@ -210,61 +259,71 @@
 #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) \
@@ -275,8 +334,7 @@
 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	},
@@ -289,24 +347,28 @@
 
 #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 {
@@ -323,8 +385,7 @@
 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	},
@@ -338,62 +399,70 @@
 #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;
 	}
 }
@@ -404,17 +473,19 @@
 #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;
@@ -425,13 +496,13 @@
 	}
 }
 
-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;
@@ -443,8 +514,7 @@
 }
 #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	}
@@ -452,8 +522,7 @@
 
 /***************** end *****************/
 
-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