gecko-dev/dom/reporting/CrashReport.cpp
Gerald Squelart 782cf5d3ad Bug 1657033 - Use Span<const char> in JSONWriter - r=froydnj
In most situations, JSONWriter users already know string lengths (either directly, or through `nsCString` and friends), so we should keep this information through JSONWriter and not recompute it again.
This also allows using JSONWriter with sub-strings (e.g., from a bigger buffer), without having to create null-terminated strings.

Public JSONWriter functions have overloads that accept literal strings.

Differential Revision: https://phabricator.services.mozilla.com/D86192
2020-09-14 02:33:20 +00:00

68 lines
1.8 KiB
C++

/* -*- 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 http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/CrashReport.h"
#include "mozilla/dom/Navigator.h"
#include "mozilla/dom/ReportingHeader.h"
#include "mozilla/dom/ReportDeliver.h"
#include "mozilla/JSONWriter.h"
#include "nsIPrincipal.h"
#include "nsIURIMutator.h"
#include "nsString.h"
namespace mozilla {
namespace dom {
struct StringWriteFunc : public JSONWriteFunc {
nsCString& mCString;
explicit StringWriteFunc(nsCString& aCString) : mCString(aCString) {}
void Write(const Span<const char>& aStr) override { mCString.Append(aStr); }
};
/* static */
bool CrashReport::Deliver(nsIPrincipal* aPrincipal, bool aIsOOM) {
MOZ_ASSERT(aPrincipal);
nsAutoCString endpoint_url;
ReportingHeader::GetEndpointForReport(u"default"_ns, aPrincipal,
endpoint_url);
if (endpoint_url.IsEmpty()) {
return false;
}
nsCString safe_origin_spec;
aPrincipal->GetExposableSpec(safe_origin_spec);
ReportDeliver::ReportData data;
data.mType = u"crash"_ns;
data.mGroupName = u"default"_ns;
CopyUTF8toUTF16(safe_origin_spec, data.mURL);
data.mCreationTime = TimeStamp::Now();
Navigator::GetUserAgent(nullptr, aPrincipal, false, data.mUserAgent);
data.mPrincipal = aPrincipal;
data.mFailures = 0;
data.mEndpointURL = endpoint_url;
nsCString body;
JSONWriter writer{MakeUnique<StringWriteFunc>(body)};
writer.Start();
if (aIsOOM) {
writer.StringProperty("reason", "oom");
}
writer.End();
data.mReportBodyJSON = body;
ReportDeliver::Fetch(data);
return true;
}
} // namespace dom
} // namespace mozilla