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WinHTTP: Add WinHttpQueryHeaders

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2024-03-11 21:41:51 +01:00
parent 5be20dde23
commit 9da457ab2b
1 changed files with 48 additions and 1 deletions
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47
include/WinStd/WinHTTP.h
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@ -10,6 +10,53 @@
#include "Common.h" #include "Common.h"
#include <winhttp.h> #include <winhttp.h>
#include <string>
/// \addtogroup WinStdWinHTTP
/// @{
///
/// Retrieves header information associated with an HTTP request.
///
/// \sa [WinHttpQueryHeaders function](https://learn.microsoft.com/en-us/windows/win32/api/winhttp/nf-winhttp-winhttpqueryheaders)
///
inline _Success_(return) BOOL WinHttpQueryHeaders(_In_ HINTERNET hRequest, _In_ DWORD dwInfoLevel, _Out_ DWORD& dwData)
{
DWORD dwSize = sizeof(dwData);
if (WinHttpQueryHeaders(hRequest, dwInfoLevel | WINHTTP_QUERY_FLAG_NUMBER, WINHTTP_HEADER_NAME_BY_INDEX, &dwData, &dwSize, WINHTTP_NO_HEADER_INDEX)) {
assert(dwSize == sizeof(dwData));
return TRUE;
}
return FALSE;
}
///
/// Retrieves header information associated with an HTTP request.
///
/// \sa [WinHttpQueryHeaders function](https://learn.microsoft.com/en-us/windows/win32/api/winhttp/nf-winhttp-winhttpqueryheaders)
///
inline _Success_(return) BOOL WinHttpQueryHeaders(_In_ HINTERNET hRequest, _In_ DWORD dwInfoLevel, _Inout_ std::wstring& sData)
{
DWORD dwSize = 0x100;
for (;;) {
sData.resize(dwSize - 1);
dwSize *= sizeof(WCHAR);
if (WinHttpQueryHeaders(hRequest, dwInfoLevel, WINHTTP_HEADER_NAME_BY_INDEX, sData.data(), &dwSize, WINHTTP_NO_HEADER_INDEX)) {
dwSize /= sizeof(WCHAR);
sData.resize(dwSize);
return TRUE;
}
DWORD result = GetLastError();
if (result == ERROR_NOT_ENOUGH_MEMORY) {
dwSize /= sizeof(WCHAR);
dwSize *= 2;
}
else
return FALSE;
}
}
/// @}
namespace winstd namespace winstd
{ {