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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
#include "EwsProtocolHandler.h"
#include "EwsMessageChannel.h"
#include "nsIMsgIncomingServer.h"
NS_IMPL_ISUPPORTS(EwsProtocolHandler, nsIProtocolHandler)
EwsProtocolHandler::EwsProtocolHandler() = default;
EwsProtocolHandler::~EwsProtocolHandler() = default;
NS_IMETHODIMP EwsProtocolHandler::GetScheme(nsACString& aScheme) {
aScheme.AssignLiteral("x-moz-ews");
return NS_OK;
}
NS_IMETHODIMP EwsProtocolHandler::NewChannel(nsIURI* aURI,
nsILoadInfo* aLoadinfo,
nsIChannel** _retval) {
nsCString spec;
MOZ_TRY(aURI->GetSpec(spec));
// During "normal" message display, `nsDocShell` takes care of running our own
// RFC822 converter for us. However, in some cases, we might want to run it
// ourselves, e.g. when displaying an attachment (inline, PDF, etc.).
//
// In the case of displaying an attachment, we need to run our own converter
// first (before any that `nsDocShell` deems appropriate), because when e.g.
// displaying a PDF, the message/rfc822->application/pdf conversion and the
// application/pdf->text/html conversion are each handled by separate stream
// converters (the former by our own, and the latter by PDF.js).
//
// Other cases (with `convert=true` in the query) likely originate from using
// `EwsService::StreamMessage`. In theory we could run the stream converter
// there directly, but we want to centralise calls to the stream converter
// service as much as possible for maintainability.
bool convert = false;
if (spec.Find("part=") != kNotFound ||
spec.Find("convert=true") != kNotFound) {
convert = true;
}
RefPtr<EwsMessageChannel> channel = new EwsMessageChannel(aURI, convert);
MOZ_TRY(channel->SetLoadInfo(aLoadinfo));
// Add the attachment disposition. This forces docShell to open the
// attachment instead of displaying it. Content types we have special
// handlers for are white-listed. This white list also exists in
// nsImapService::NewChannel, nsMailboxService::NewChannel and
// nsNntpService::NewChannel, so if you're changing this, update those too.
if (spec.Find("part=") >= 0 && spec.Find("type=message/rfc822") < 0 &&
spec.Find("type=application/x-message-display") < 0 &&
spec.Find("type=application/pdf") < 0) {
MOZ_TRY(channel->SetContentDisposition(nsIChannel::DISPOSITION_ATTACHMENT));
}
channel.forget(_retval);
return NS_OK;
}
NS_IMETHODIMP EwsProtocolHandler::AllowPort(int32_t port, const char* scheme,
bool* _retval) {
// Because we control the entire lifetime of message URIs from creation to
// loading, we should never encounter a port we don't expect.
MOZ_ASSERT_UNREACHABLE("call to AllowPort on internal protocol");
NS_ENSURE_ARG_POINTER(_retval);
*_retval = false;
return NS_OK;
}