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idn: use curlx allocators on Windows

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Replace `curlx_convert*()` functions with local copies that always use
the curlx allocator.

Closes #19790
This commit is contained in:
Viktor Szakats 2025-12-01 15:49:01 +01:00
parent 3387133450
commit ccb68d2e3b
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GPG key ID: B5ABD165E2AEF201
1 changed files with 55 additions and 26 deletions
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81
lib/idn.c
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@ -30,7 +30,6 @@
#include "urldata.h"
#include "idn.h"
#include "sendf.h"
#include "curlx/multibyte.h"
#include "curlx/warnless.h"
#ifdef USE_LIBIDN2
@ -163,24 +162,60 @@ WINBASEAPI int WINAPI IdnToUnicode(DWORD dwFlags,
#define IDN_MAX_LENGTH 255
static wchar_t *idn_curlx_convert_UTF8_to_wchar(const char *str_utf8)
{
wchar_t *str_w = NULL;
if(str_utf8) {
int str_w_len = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
str_utf8, -1, NULL, 0);
if(str_w_len > 0) {
str_w = curlx_malloc(str_w_len * sizeof(wchar_t));
if(str_w) {
if(MultiByteToWideChar(CP_UTF8, 0, str_utf8, -1, str_w,
str_w_len) == 0) {
curlx_free(str_w);
return NULL;
}
}
}
}
return str_w;
}
static char *idn_curlx_convert_wchar_to_UTF8(const wchar_t *str_w)
{
char *str_utf8 = NULL;
if(str_w) {
int bytes = WideCharToMultiByte(CP_UTF8, 0, str_w, -1,
NULL, 0, NULL, NULL);
if(bytes > 0) {
str_utf8 = curlx_malloc(bytes);
if(str_utf8) {
if(WideCharToMultiByte(CP_UTF8, 0, str_w, -1, str_utf8, bytes,
NULL, NULL) == 0) {
curlx_free(str_utf8);
return NULL;
}
}
}
}
return str_utf8;
}
static CURLcode win32_idn_to_ascii(const char *in, char **out)
{
wchar_t *in_w = curlx_convert_UTF8_to_wchar(in);
wchar_t *in_w = idn_curlx_convert_UTF8_to_wchar(in);
*out = NULL;
if(in_w) {
wchar_t punycode[IDN_MAX_LENGTH];
int chars = IdnToAscii(0, in_w, (int)(wcslen(in_w) + 1), punycode,
IDN_MAX_LENGTH);
curlx_unicodefree(in_w);
curlx_free(in_w);
if(chars) {
char *mstr = curlx_convert_wchar_to_UTF8(punycode);
if(mstr) {
*out = curlx_strdup(mstr);
curlx_unicodefree(mstr);
if(!*out)
return CURLE_OUT_OF_MEMORY;
}
else
*out = idn_curlx_convert_wchar_to_UTF8(punycode);
if(!*out)
return CURLE_OUT_OF_MEMORY;
}
else
@ -192,32 +227,26 @@ static CURLcode win32_idn_to_ascii(const char *in, char **out)
return CURLE_OK;
}
static CURLcode win32_ascii_to_idn(const char *in, char **output)
static CURLcode win32_ascii_to_idn(const char *in, char **out)
{
char *out = NULL;
wchar_t *in_w = curlx_convert_UTF8_to_wchar(in);
wchar_t *in_w = idn_curlx_convert_UTF8_to_wchar(in);
*out = NULL;
if(in_w) {
WCHAR idn[IDN_MAX_LENGTH]; /* stores a UTF-16 string */
int chars = IdnToUnicode(0, in_w, (int)(wcslen(in_w) + 1), idn,
IDN_MAX_LENGTH);
curlx_unicodefree(in_w);
if(chars) {
/* 'chars' is "the number of characters retrieved" */
char *mstr = curlx_convert_wchar_to_UTF8(idn);
if(mstr) {
out = curlx_strdup(mstr);
curlx_unicodefree(mstr);
if(!out)
return CURLE_OUT_OF_MEMORY;
}
curlx_free(in_w);
if(chars) { /* 'chars' is "the number of characters retrieved" */
*out = idn_curlx_convert_wchar_to_UTF8(idn);
if(!*out)
return CURLE_OUT_OF_MEMORY;
}
else
return CURLE_URL_MALFORMAT;
}
else
return CURLE_URL_MALFORMAT;
*output = out;
return CURLE_OK;
}