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/* 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 */
#ifndef nsAboutProtocolUtils_h
#define nsAboutProtocolUtils_h
#include "mozilla/Try.h"
#include "nsIURI.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "nsIAboutModule.h"
#include "nsServiceManagerUtils.h"
#include "prtime.h"
[[nodiscard]] inline nsresult NS_GetAboutModuleName(nsIURI* aAboutURI,
nsCString& aModule) {
"should be used only on about: URIs");
int32_t f = aModule.FindCharInSet("#?"_ns);
if (f != kNotFound) {
// convert to lowercase, as all about: modules are lowercase
return NS_OK;
[[nodiscard]] inline bool NS_IsContentAccessibleAboutURI(nsIURI* aURI) {
MOZ_ASSERT(aURI->SchemeIs("about"), "Should be used only on about: URIs");
nsAutoCString name;
if (NS_WARN_IF(NS_FAILED(NS_GetAboutModuleName(aURI, name)))) {
return true;
return name.EqualsLiteral("blank") || name.EqualsLiteral("srcdoc");
inline nsresult NS_GetAboutModule(nsIURI* aAboutURI, nsIAboutModule** aModule) {
MOZ_ASSERT(aAboutURI, "Must have URI");
nsAutoCString contractID;
MOZ_TRY(NS_GetAboutModuleName(aAboutURI, contractID));
// look up a handler to deal with "what"
return CallGetService(contractID.get(), aModule);
inline PRTime SecondsToPRTime(uint32_t t_sec) {
return (PRTime)t_sec * PR_USEC_PER_SEC;
inline void PrintTimeString(char* buf, uint32_t bufsize, uint32_t t_sec) {
PRExplodedTime et;
PRTime t_usec = SecondsToPRTime(t_sec);
PR_ExplodeTime(t_usec, PR_LocalTimeParameters, &et);
PR_FormatTime(buf, bufsize, "%Y-%m-%d %H:%M:%S", &et);