/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
/** * We used to validate a uri with SHParseDisplayName to mitigate the Windows * bug (Bug 394974). However, Bug 1573051 revealed an issue that a fragment, * a string following a hash mark (#), is dropped when we extract a string * from PIDL. This is the intended behavior of Windows. * * To deal with the fragment issue as well as keeping our mitigation, we * decided to use CreateUri to validate a uri string, but we also keep using * SHParseDisplayName as a pre-check. This is because there are several * cases where CreateUri succeeds while SHParseDisplayName fails such as * a non-existent file: uri. * * To minimize the impact of introducing CreateUri into the validation logic, * we try to mimic the logic of windows_storage!IUriToPidl (ieframe!IUriToPidl * in Win7) which is executed behind SHParseDisplayName. * What IUriToPidl does is: * 1) If a given uri has a fragment, removes a fragment. * 2) Takes an absolute uri if it's available in the given uri, otherwise * takes a raw uri. * * As we need to get a full uri including a fragment, this function does 2).
*/ inline LauncherResult<_bstr_t> UrlmonValidateUri(constwchar_t* aUri) {
LauncherResult<UniqueAbsolutePidl> pidlResult = ShellParseDisplayName(aUri); if (pidlResult.isErr()) { return pidlResult.propagateErr();
}
// The value of |flags| is the same value as used in ieframe!_EnsureIUri in // Win7, which is called behind SHParseDisplayName. In Win10, on the other // hand, an flag 0x03000000 is also passed to CreateUri, but we don't // specify it because it's undocumented and unknown.
constexpr DWORD flags =
Uri_CREATE_NO_DECODE_EXTRA_INFO | Uri_CREATE_CANONICALIZE |
Uri_CREATE_CRACK_UNKNOWN_SCHEMES | Uri_CREATE_PRE_PROCESS_HTML_URI |
Uri_CREATE_IE_SETTINGS;
RefPtr<IUri> uri;
HRESULT hr;
SAFECALL_URLMON_FUNC(CreateUri, aUri, flags, 0, getter_AddRefs(uri)); if (FAILED(hr)) { return LAUNCHER_ERROR_FROM_HRESULT(hr);
}
_bstr_t bstrUri;
hr = uri->GetAbsoluteUri(bstrUri.GetAddress()); if (FAILED(hr)) { return LAUNCHER_ERROR_FROM_HRESULT(hr);
}
if (hr == S_FALSE) {
hr = uri->GetRawUri(bstrUri.GetAddress()); if (FAILED(hr)) { return LAUNCHER_ERROR_FROM_HRESULT(hr);
}
}
return bstrUri;
}
} // namespace mozilla
#endif// mozilla_UrlmonHeaderOnlyUtils_h
¤ Dauer der Verarbeitung: 0.14 Sekunden
(vorverarbeitet)
¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung ist noch experimentell.
