idn_result_t
mdn_decodename(int actions, const char *from, char *to, size_t tolen) {
idn_result_t r;
assert(from != NULL && to != NULL);
TRACE(("idn_decodename(actions=%s, from=\"%s\", tolen=%d)\n",
idn__res_actionstostring(actions),
idn__debug_xstring(from, 50), (int)tolen));
if (!initialized && ((r = idn_nameinit(1)) != idn_success))
return (r);
return (idn_res_decodename(default_conf, actions, from, to, tolen));
}
static idn_result_t
convert_line (idnconv_strbuf_t * from, idnconv_strbuf_t * to, idn_resconf_t conf, idn_action_t actions, int flags)
{
idn_result_t r = idn_success;
char *from_str = strbuf_get (from);
for (;;)
{
char *to_str = strbuf_get (to);
size_t to_size = strbuf_size (to);
switch (flags & (FLAG_REVERSE | FLAG_SELECTIVE))
{
case 0:
r = idn_res_encodename (conf, actions, from_str, to_str, to_size);
break;
case FLAG_REVERSE:
r = idn_res_decodename (conf, actions, from_str, to_str, to_size);
break;
case FLAG_SELECTIVE:
r = selective_encode (conf, actions, from_str, to_str, to_size);
break;
case FLAG_REVERSE | FLAG_SELECTIVE:
r = selective_decode (conf, actions, from_str, to_str, to_size);
break;
}
if (r == idn_buffer_overflow)
{
/*
* Conversion is not successful because
* the size of the target buffer is not enough.
* Double the size and retry.
*/
if (strbuf_double (to) == NULL)
{
/* oops. allocation failed. */
return (idn_nomemory);
}
}
else
{
break;
}
}
return (r);
}
BOOL
idnConvRsp(idn_resconf_t ctx, const char FAR *from, char FAR *to, size_t tolen)
{
idnLogReset();
idnLogPrintf(idn_log_level_trace, "idnConvRsp(from=%-.100s)\n", from);
if (ctx == NULL) {
if (strlen(from) >= tolen)
return FALSE;
strcpy(to, from);
return TRUE;
} else if (idn_res_decodename(ctx, IDN_DECODE_APP,
from, to, tolen) == idn_success) {
return TRUE;
} else {
return FALSE;
}
}
idn_result_t
idn_decodename(idn_action_t actions, const char *from, char *to, size_t tolen) {
idn_result_t r;
assert(from != NULL && to != NULL);
TRACE(("idn_decodename(actions=%s, from=\"%s\", tolen=%d)\n",
idn__res_actionstostring(actions),
idn__debug_xstring(from, 50), (int)tolen));
if (!initialized && ((r = idn_nameinit(0)) != idn_success))
goto ret;
r = idn_res_decodename(default_conf, actions, from, to, tolen);
ret:
if (r == idn_success) {
TRACE(("idn_decodename(): success (to=\"%s\")\n",
idn__debug_xstring(to, 50)));
} else {
TRACE(("idn_decodename(): %s\n", idn_result_tostring(r)));
}
return (r);
}
idn_result_t
selective_decode(idn_resconf_t conf, idn_action_t actions,
char *from, char *to, int tolen)
{
char *domain_name;
char *ignored_chunk;
char save;
int len;
idn_result_t r;
/*
* While `*from' points to a character in a string which may be
* a domain name, `domain_name' refers to the beginning of the
* domain name.
*/
domain_name = NULL;
/*
* We ignore chunks matching to the regular expression:
* [\-\.][0-9A-Za-z\-\.]*
*
* While `*from' points to a character in such a chunk,
* `ignored_chunk' refers to the beginning of the chunk.
*/
ignored_chunk = NULL;
for (;;) {
if (*from == '-') {
/*
* We don't recognize `.-' as a part of domain name.
*/
if (domain_name != NULL) {
if (*(from - 1) == '.') {
ignored_chunk = domain_name;
domain_name = NULL;
}
} else if (ignored_chunk == NULL) {
ignored_chunk = from;
}
} else if (*from == '.') {
/*
* We don't recognize `-.' nor `..' as a part of
* domain name.
*/
if (domain_name != NULL) {
if (*(from - 1) == '-' || *(from - 1) == '.') {
ignored_chunk = domain_name;
domain_name = NULL;
}
} else if (ignored_chunk == NULL) {
ignored_chunk = from;
}
} else if (('a' <= *from && *from <= 'z') ||
('A' <= *from && *from <= 'Z') ||
('0' <= *from && *from <= '9')) {
if (ignored_chunk == NULL && domain_name == NULL)
domain_name = from;
} else {
if (ignored_chunk != NULL) {
/*
* `from' reaches the end of the ignored chunk.
* Copy the chunk to `to'.
*/
len = from - ignored_chunk;
if (tolen < len)
return (idn_buffer_overflow);
(void)memcpy(to, ignored_chunk, len);
to += len;
tolen -= len;
} else if (domain_name != NULL) {
/*
* `from' reaches the end of the domain name.
* Decode the domain name, and copy the result
* to `to'.
*/
save = *from;
*from = '\0';
r = idn_res_decodename(conf, actions,
domain_name, to, tolen);
*from = save;
if (r == idn_success) {
len = strlen(to);
} else if (r == idn_invalid_encoding) {
len = from - domain_name;
if (tolen < len)
return (idn_buffer_overflow);
(void)memcpy(to, domain_name, len);
} else {
return (r);
}
to += len;
tolen -= len;
}
/*
* Copy a character `*from' to `to'.
*/
if (tolen < 1)
return (idn_buffer_overflow);
*to = *from;
to++;
tolen--;
domain_name = NULL;
ignored_chunk = NULL;
if (*from == '\0')
break;
}
from++;
}
return (idn_success);
}
idn_result_t
idn_res_decodename2(idn_resconf_t ctx, idn_action_t actions, const char *from,
char *to, size_t tolen, const char *auxencoding) {
#ifdef WITHOUT_ICONV
return idn_failure;
#else /* WITHOUT_ICONV */
idn_result_t r;
idn_converter_t aux_converter = NULL;
unsigned long *buffer_ucs4 = NULL;
char *buffer_utf8 = NULL;
size_t buffer_length;
assert(ctx != NULL && from != NULL && to != NULL);
TRACE(("idn_res_decodename2(actions=%s, from=\"%s\", tolen=%d, "
"auxencoding=\"%s\")\n",
idn__res_actionstostring(actions),
idn__debug_xstring(from, 50), (int)tolen,
(auxencoding != NULL) ? auxencoding : "<null>"));
if (!initialized)
idn_res_initialize();
if (!enabled || actions == 0) {
r = copy_verbatim(from, to, tolen);
goto ret;
} else if (tolen <= 0) {
r = idn_buffer_overflow;
goto ret;
}
if (auxencoding == NULL ||
strcmp(auxencoding, IDN_UTF8_ENCODING_NAME) == 0 ||
strcmp(auxencoding, "UTF-8") == 0) {
return idn_res_decodename(ctx, actions, from, to, tolen);
}
/*
* Convert `from' to UCS4.
*/
r = idn_resconf_setauxidnconvertername(ctx, auxencoding,
IDN_CONVERTER_DELAYEDOPEN);
if (r != idn_success) {
goto ret;
}
aux_converter = idn_resconf_getauxidnconverter(ctx);
if (aux_converter == NULL) {
r = idn_failure;
goto ret;
}
buffer_length = tolen * 2;
for (;;) {
void *new_buffer;
new_buffer = realloc(buffer_ucs4,
sizeof(*buffer_ucs4) * buffer_length);
if (new_buffer == NULL) {
r = idn_nomemory;
goto ret;
}
buffer_ucs4 = (unsigned long *)new_buffer;
r = idn_converter_convtoucs4(aux_converter, from,
buffer_ucs4,
buffer_length);
if (r == idn_success)
break;
else if (r != idn_buffer_overflow)
goto ret;
buffer_length *= 2;
}
if (*buffer_ucs4 == '\0') {
if (tolen <= 0) {
r = idn_buffer_overflow;
goto ret;
}
*to = '\0';
r = idn_success;
goto ret;
}
/*
* Convert `buffer_ucs4' to UTF-8.
*/
buffer_length = tolen * 2;
for (;;) {
void *new_buffer;
new_buffer = realloc(buffer_utf8,
sizeof(*buffer_utf8) * buffer_length);
if (new_buffer == NULL) {
r = idn_nomemory;
goto ret;
}
buffer_utf8 = (char *)new_buffer;
r = idn_ucs4_ucs4toutf8(buffer_ucs4, buffer_utf8,
buffer_length);
if (r == idn_success)
break;
else if (r != idn_buffer_overflow)
goto ret;
buffer_length *= 2;
}
if (*buffer_utf8 == '\0') {
if (tolen <= 0) {
r = idn_buffer_overflow;
goto ret;
}
*to = '\0';
r = idn_success;
goto ret;
}
r = idn_res_decodename(ctx, actions, buffer_utf8, to, tolen);
ret:
if (r == idn_success) {
TRACE(("idn_res_decodename2(): success (to=\"%s\")\n",
idn__debug_xstring(to, 50)));
} else {
TRACE(("idn_res_decodename2(): %s\n", idn_result_tostring(r)));
}
free(buffer_ucs4);
free(buffer_utf8);
if (aux_converter != NULL)
idn_converter_destroy(aux_converter);
return (r);
#endif /* WITHOUT_ICONV */
}
