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lib: fix some misuse of curlx_convert_UTF8_to_tchar

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curlx_convert_UTF8_to_tchar must be freed by curlx_unicodefree, but
prior to this change some uses mistakenly called free.

I've reviewed all other uses of curlx_convert_UTF8_to_tchar and
curlx_convert_tchar_to_UTF8.

Bug: https://github.com/curl/curl/pull/6602#issuecomment-825236763
Reported-by: sergio-nsk@users.noreply.github.com

Closes https://github.com/curl/curl/pull/6938
This commit is contained in:
Jay Satiro 2021-04-23 00:21:16 -04:00
parent 3e820fbf25
commit 1d5d0ae9e5
2 changed files with 22 additions and 15 deletions
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23
lib/vauth/vauth.c
View file

@ -72,6 +72,7 @@ TCHAR *Curl_auth_build_spn(const char *service, const char *host,
{
char *utf8_spn = NULL;
TCHAR *tchar_spn = NULL;
TCHAR *dupe_tchar_spn = NULL;
(void) realm;
@ -84,23 +85,19 @@ TCHAR *Curl_auth_build_spn(const char *service, const char *host,
/* Generate our UTF8 based SPN */
utf8_spn = aprintf("%s/%s", service, host);
if(!utf8_spn) {
if(!utf8_spn)
return NULL;
}
/* Allocate our TCHAR based SPN */
/* Allocate and return a TCHAR based SPN. Since curlx_convert_UTF8_to_tchar
must be freed by curlx_unicodefree we'll dupe the result so that the
pointer this function returns can be normally free'd. */
tchar_spn = curlx_convert_UTF8_to_tchar(utf8_spn);
if(!tchar_spn) {
free(utf8_spn);
free(utf8_spn);
if(!tchar_spn)
return NULL;
}
/* Release the UTF8 variant when operating with Unicode */
curlx_unicodefree(utf8_spn);
/* Return our newly allocated SPN */
return tchar_spn;
dupe_tchar_spn = _tcsdup(tchar_spn);
curlx_unicodefree(tchar_spn);
return dupe_tchar_spn;
}
#endif /* USE_WINDOWS_SSPI */