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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/media/router/discovery/mdns/media_sink_util.h"
#include <map>
#include "base/command_line.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "chrome/browser/media/router/discovery/mdns/dns_sd_delegate.h"
#include "components/media_router/common/mojom/media_router.mojom.h"
#include "net/base/host_port_pair.h"
#include "net/base/ip_address.h"
#include "net/base/url_util.h"
namespace media_router {
SinkIconType GetCastSinkIconType(
cast_channel::CastDeviceCapabilitySet capabilities) {
if (capabilities.Has(cast_channel::CastDeviceCapability::kVideoOut)) {
return SinkIconType::CAST;
}
return capabilities.Has(cast_channel::CastDeviceCapability::kMultizoneGroup)
? SinkIconType::CAST_AUDIO_GROUP
: SinkIconType::CAST_AUDIO;
}
CreateCastMediaSinkResult CreateCastMediaSink(const DnsSdService& service,
MediaSinkInternal* cast_sink) {
DCHECK(cast_sink);
if (service.service_name.find(kCastServiceType) == std::string::npos) {
return CreateCastMediaSinkResult::kNotCastDevice;
}
net::IPAddress ip_address;
if (!ip_address.AssignFromIPLiteral(service.ip_address)) {
return CreateCastMediaSinkResult::kMissingOrInvalidIPAddress;
}
std::map<std::string, std::string> service_data;
for (const auto& item : service.service_data) {
// |item| format should be "id=xxxxxx", etc.
size_t split_idx = item.find('=');
if (split_idx == std::string::npos) {
continue;
}
std::string key = item.substr(0, split_idx);
std::string val =
split_idx < item.length() ? item.substr(split_idx + 1) : "";
service_data[key] = val;
}
std::string unique_id = service_data["id"];
if (unique_id.empty()) {
return CreateCastMediaSinkResult::kMissingID;
}
std::string friendly_name = service_data["fn"];
if (friendly_name.empty()) {
return CreateCastMediaSinkResult::kMissingFriendlyName;
}
CastSinkExtraData extra_data;
extra_data.ip_endpoint =
net::IPEndPoint(ip_address, service.service_host_port.port());
extra_data.model_name = service_data["md"];
{
uint64_t capabilities = 0;
if (base::StringToUint64(service_data["ca"], &capabilities)) {
extra_data.capabilities =
cast_channel::CastDeviceCapabilitySet::FromEnumBitmask(capabilities);
}
}
std::string processed_uuid = MediaSinkInternal::ProcessDeviceUUID(unique_id);
std::string sink_id = base::StringPrintf("cast:%s", processed_uuid.c_str());
MediaSink sink(sink_id, friendly_name,
GetCastSinkIconType(extra_data.capabilities),
mojom::MediaRouteProviderId::CAST);
cast_sink->set_sink(sink);
cast_sink->set_cast_data(extra_data);
return CreateCastMediaSinkResult::kOk;
}
std::vector<MediaSinkInternal> GetFixedIPSinksFromCommandLine() {
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
std::string ips_string =
command_line->GetSwitchValueASCII(kFixedCastDeviceIps);
if (ips_string.empty()) {
return std::vector<MediaSinkInternal>();
}
std::vector<MediaSinkInternal> sinks;
std::vector<std::string> ips = base::SplitString(
ips_string, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
for (const auto& ip : ips) {
std::string host;
int port = -1;
if (!net::ParseHostAndPort(ip, &host, &port)) {
continue;
}
net::IPAddress ip_address;
if (!ip_address.AssignFromIPLiteral(host)) {
continue;
}
if (port == -1) {
port = kCastControlPort;
}
std::string instance_name;
base::ReplaceChars(host, ".", "_", &instance_name);
instance_name = "Receiver-" + instance_name;
DnsSdService service;
service.service_name = instance_name + "._googlecast._tcp.local";
service.service_host_port = net::HostPortPair(host, port);
service.ip_address = host;
service.service_data = {
"id=mdns:" + instance_name, "ve=02", "ca=5", "st=1",
"fn=" + instance_name, "md=Chromecast"};
MediaSinkInternal sink;
CreateCastMediaSinkResult result = CreateCastMediaSink(service, &sink);
if (result == CreateCastMediaSinkResult::kOk) {
sinks.push_back(sink);
}
}
return sinks;
}
} // namespace media_router
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