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capi_get_provname: Check return values

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Reviewed-by: Richard Levitte <levitte@openssl.org>
This commit is contained in:
Kurt Roeckx 2014-12-04 18:16:42 +01:00
parent f5905ba341
commit f6fa7c5347
1 changed files with 12 additions and 6 deletions
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18
engines/e_capi.c
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@ -1148,15 +1148,16 @@ static int capi_get_provname(CAPI_CTX *ctx, LPSTR *pname, DWORD *ptype, DWORD id
capi_adderror(err);
return 0;
}
if (sizeof(TCHAR) != sizeof(char))
name = alloca(len);
else
name = OPENSSL_malloc(len);
name = OPENSSL_malloc(len);
if (name == NULL)
{
CAPIerr(CAPI_F_CAPI_GET_PROVNAME, ERR_R_MALLOC_FAILURE);
return 0;
}
if (!CryptEnumProviders(idx, NULL, 0, ptype, name, &len))
{
err = GetLastError();
if (sizeof(TCHAR) == sizeof(char))
OPENSSL_free(name);
OPENSSL_free(name);
if (err == ERROR_NO_MORE_ITEMS)
return 2;
CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
@ -1164,7 +1165,12 @@ static int capi_get_provname(CAPI_CTX *ctx, LPSTR *pname, DWORD *ptype, DWORD id
return 0;
}
if (sizeof(TCHAR) != sizeof(char))
{
*pname = wide_to_asc((WCHAR *)name);
OPENSSL_free(name);
if (*pname == NULL)
return 0;
}
else
*pname = (char *)name;
CAPI_trace(ctx, "capi_get_provname, returned name=%s, type=%d\n", *pname, *ptype);