816 lines
31 KiB
C++
816 lines
31 KiB
C++
#include "v2/Signaling.h"
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#include "third-party/json11.hpp"
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#include "rtc_base/checks.h"
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#include "rtc_base/logging.h"
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#include <sstream>
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namespace tgcalls {
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namespace signaling {
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static std::string uint32ToString(uint32_t value) {
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std::ostringstream stringStream;
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stringStream << value;
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return stringStream.str();
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}
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static uint32_t stringToUInt32(std::string const &string) {
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std::stringstream stringStream(string);
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uint32_t value = 0;
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stringStream >> value;
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return value;
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}
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json11::Json::object SsrcGroup_serialize(SsrcGroup const &ssrcGroup) {
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json11::Json::object object;
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json11::Json::array ssrcs;
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for (auto ssrc : ssrcGroup.ssrcs) {
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ssrcs.push_back(json11::Json(uint32ToString(ssrc)));
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}
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object.insert(std::make_pair("semantics", json11::Json(ssrcGroup.semantics)));
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object.insert(std::make_pair("ssrcs", json11::Json(std::move(ssrcs))));
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return object;
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}
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absl::optional<SsrcGroup> SsrcGroup_parse(json11::Json::object const &object) {
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SsrcGroup result;
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const auto semantics = object.find("semantics");
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if (semantics == object.end() || !semantics->second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: semantics must be a string";
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return absl::nullopt;
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}
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result.semantics = semantics->second.string_value();
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const auto ssrcs = object.find("ssrcs");
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if (ssrcs == object.end() || !ssrcs->second.is_array()) {
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RTC_LOG(LS_ERROR) << "Signaling: ssrcs must be an array";
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return absl::nullopt;
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}
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for (const auto &ssrc : ssrcs->second.array_items()) {
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if (ssrc.is_string()) {
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uint32_t parsedSsrc = stringToUInt32(ssrc.string_value());
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if (parsedSsrc == 0) {
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RTC_LOG(LS_ERROR) << "Signaling: parsedSsrc must not be 0";
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return absl::nullopt;
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}
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result.ssrcs.push_back(parsedSsrc);
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} else if (ssrc.is_number()) {
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uint32_t parsedSsrc = (uint32_t)ssrc.number_value();
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result.ssrcs.push_back(parsedSsrc);
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} else {
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RTC_LOG(LS_ERROR) << "Signaling: ssrcs item must be a string or a number";
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return absl::nullopt;
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}
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}
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return result;
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}
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json11::Json::object FeedbackType_serialize(FeedbackType const &feedbackType) {
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json11::Json::object object;
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object.insert(std::make_pair("type", json11::Json(feedbackType.type)));
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object.insert(std::make_pair("subtype", json11::Json(feedbackType.subtype)));
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return object;
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}
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absl::optional<FeedbackType> FeedbackType_parse(json11::Json::object const &object) {
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FeedbackType result;
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const auto type = object.find("type");
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if (type == object.end() || !type->second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: type must be a string";
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return absl::nullopt;
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}
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result.type = type->second.string_value();
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const auto subtype = object.find("subtype");
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if (subtype == object.end() || !subtype->second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: subtype must be a string";
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return absl::nullopt;
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}
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result.subtype = subtype->second.string_value();
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return result;
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}
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json11::Json::object RtpExtension_serialize(webrtc::RtpExtension const &rtpExtension) {
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json11::Json::object object;
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object.insert(std::make_pair("id", json11::Json(rtpExtension.id)));
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object.insert(std::make_pair("uri", json11::Json(rtpExtension.uri)));
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return object;
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}
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absl::optional<webrtc::RtpExtension> RtpExtension_parse(json11::Json::object const &object) {
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const auto id = object.find("id");
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if (id == object.end() || !id->second.is_number()) {
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RTC_LOG(LS_ERROR) << "Signaling: id must be a number";
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return absl::nullopt;
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}
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const auto uri = object.find("uri");
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if (uri == object.end() || !uri->second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: uri must be a string";
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return absl::nullopt;
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}
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return webrtc::RtpExtension(uri->second.string_value(), id->second.int_value());
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}
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json11::Json::object PayloadType_serialize(PayloadType const &payloadType) {
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json11::Json::object object;
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object.insert(std::make_pair("id", json11::Json((int)payloadType.id)));
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object.insert(std::make_pair("name", json11::Json(payloadType.name)));
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object.insert(std::make_pair("clockrate", json11::Json((int)payloadType.clockrate)));
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object.insert(std::make_pair("channels", json11::Json((int)payloadType.channels)));
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json11::Json::array feedbackTypes;
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for (const auto &feedbackType : payloadType.feedbackTypes) {
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feedbackTypes.push_back(FeedbackType_serialize(feedbackType));
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}
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object.insert(std::make_pair("feedbackTypes", json11::Json(std::move(feedbackTypes))));
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json11::Json::object parameters;
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for (auto it : payloadType.parameters) {
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parameters.insert(std::make_pair(it.first, json11::Json(it.second)));
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}
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object.insert(std::make_pair("parameters", json11::Json(std::move(parameters))));
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return object;
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}
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absl::optional<PayloadType> PayloadType_parse(json11::Json::object const &object) {
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PayloadType result;
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const auto id = object.find("id");
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if (id == object.end() || !id->second.is_number()) {
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RTC_LOG(LS_ERROR) << "Signaling: id must be a number";
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return absl::nullopt;
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}
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result.id = id->second.int_value();
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const auto name = object.find("name");
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if (name == object.end() || !name->second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: name must be a string";
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return absl::nullopt;
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}
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result.name = name->second.string_value();
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const auto clockrate = object.find("clockrate");
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if (clockrate == object.end() || !clockrate->second.is_number()) {
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RTC_LOG(LS_ERROR) << "Signaling: clockrate must be a number";
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return absl::nullopt;
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}
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result.clockrate = clockrate->second.int_value();
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const auto channels = object.find("channels");
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if (channels != object.end()) {
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if (!channels->second.is_number()) {
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RTC_LOG(LS_ERROR) << "Signaling: channels must be a number";
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return absl::nullopt;
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}
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result.channels = channels->second.int_value();
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}
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const auto feedbackTypes = object.find("feedbackTypes");
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if (feedbackTypes != object.end()) {
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if (!feedbackTypes->second.is_array()) {
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RTC_LOG(LS_ERROR) << "Signaling: feedbackTypes must be an array";
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return absl::nullopt;
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}
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for (const auto &feedbackType : feedbackTypes->second.array_items()) {
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if (!feedbackType.is_object()) {
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RTC_LOG(LS_ERROR) << "Signaling: feedbackTypes items must be objects";
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return absl::nullopt;
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}
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if (const auto parsedFeedbackType = FeedbackType_parse(feedbackType.object_items())) {
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result.feedbackTypes.push_back(parsedFeedbackType.value());
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} else {
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RTC_LOG(LS_ERROR) << "Signaling: could not parse FeedbackType";
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return absl::nullopt;
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}
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}
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}
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const auto parameters = object.find("parameters");
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if (parameters != object.end()) {
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if (!parameters->second.is_object()) {
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RTC_LOG(LS_ERROR) << "Signaling: parameters must be an object";
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return absl::nullopt;
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}
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for (const auto &item : parameters->second.object_items()) {
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if (!item.second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: parameters items must be strings";
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return absl::nullopt;
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}
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result.parameters.push_back(std::make_pair(item.first, item.second.string_value()));
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}
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}
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return result;
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}
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json11::Json::object MediaContent_serialize(MediaContent const &mediaContent) {
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json11::Json::object object;
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std::string mappedType;
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switch (mediaContent.type) {
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case MediaContent::Type::Audio: {
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mappedType = "audio";
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break;
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}
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case MediaContent::Type::Video: {
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mappedType = "video";
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break;
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}
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default: {
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RTC_FATAL() << "Unknown media type";
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break;
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}
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}
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object.insert(std::make_pair("type", mappedType));
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object.insert(std::make_pair("ssrc", json11::Json(uint32ToString(mediaContent.ssrc))));
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if (mediaContent.ssrcGroups.size() != 0) {
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json11::Json::array ssrcGroups;
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for (const auto &group : mediaContent.ssrcGroups) {
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ssrcGroups.push_back(SsrcGroup_serialize(group));
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}
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object.insert(std::make_pair("ssrcGroups", json11::Json(std::move(ssrcGroups))));
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}
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if (mediaContent.payloadTypes.size() != 0) {
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json11::Json::array payloadTypes;
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for (const auto &payloadType : mediaContent.payloadTypes) {
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payloadTypes.push_back(PayloadType_serialize(payloadType));
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}
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object.insert(std::make_pair("payloadTypes", json11::Json(std::move(payloadTypes))));
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}
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json11::Json::array rtpExtensions;
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for (const auto &rtpExtension : mediaContent.rtpExtensions) {
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rtpExtensions.push_back(RtpExtension_serialize(rtpExtension));
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}
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object.insert(std::make_pair("rtpExtensions", json11::Json(std::move(rtpExtensions))));
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return object;
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}
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absl::optional<MediaContent> MediaContent_parse(json11::Json::object const &object) {
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MediaContent result;
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const auto type = object.find("type");
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if (type == object.end() || !type->second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: type must be a string";
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return absl::nullopt;
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}
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if (type->second.string_value() == "audio") {
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result.type = MediaContent::Type::Audio;
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} else if (type->second.string_value() == "video") {
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result.type = MediaContent::Type::Video;
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} else {
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RTC_LOG(LS_ERROR) << "Signaling: type must be one of [\"audio\", \"video\"]";
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return absl::nullopt;
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}
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const auto ssrc = object.find("ssrc");
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if (ssrc == object.end()) {
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RTC_LOG(LS_ERROR) << "Signaling: ssrc must be present";
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return absl::nullopt;
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}
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if (ssrc->second.is_string()) {
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result.ssrc = stringToUInt32(ssrc->second.string_value());
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} else if (ssrc->second.is_number()) {
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result.ssrc = (uint32_t)ssrc->second.number_value();
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} else {
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RTC_LOG(LS_ERROR) << "Signaling: ssrc must be a string or a number";
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return absl::nullopt;
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}
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const auto ssrcGroups = object.find("ssrcGroups");
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if (ssrcGroups != object.end()) {
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if (!ssrcGroups->second.is_array()) {
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RTC_LOG(LS_ERROR) << "Signaling: ssrcGroups must be an array";
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return absl::nullopt;
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}
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for (const auto &ssrcGroup : ssrcGroups->second.array_items()) {
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if (!ssrcGroup.is_object()) {
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RTC_LOG(LS_ERROR) << "Signaling: ssrcsGroups items must be objects";
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return absl::nullopt;
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}
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if (const auto parsedSsrcGroup = SsrcGroup_parse(ssrcGroup.object_items())) {
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result.ssrcGroups.push_back(parsedSsrcGroup.value());
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} else {
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RTC_LOG(LS_ERROR) << "Signaling: could not parse SsrcGroup";
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return absl::nullopt;
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}
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}
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}
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const auto payloadTypes = object.find("payloadTypes");
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if (payloadTypes != object.end()) {
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if (!payloadTypes->second.is_array()) {
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RTC_LOG(LS_ERROR) << "Signaling: payloadTypes must be an array";
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return absl::nullopt;
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}
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for (const auto &payloadType : payloadTypes->second.array_items()) {
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if (!payloadType.is_object()) {
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RTC_LOG(LS_ERROR) << "Signaling: payloadTypes items must be objects";
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return absl::nullopt;
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}
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if (const auto parsedPayloadType = PayloadType_parse(payloadType.object_items())) {
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result.payloadTypes.push_back(parsedPayloadType.value());
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} else {
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RTC_LOG(LS_ERROR) << "Signaling: could not parse PayloadType";
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return absl::nullopt;
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}
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}
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}
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const auto rtpExtensions = object.find("rtpExtensions");
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if (rtpExtensions != object.end()) {
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if (!rtpExtensions->second.is_array()) {
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RTC_LOG(LS_ERROR) << "Signaling: rtpExtensions must be an array";
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return absl::nullopt;
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}
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for (const auto &rtpExtension : rtpExtensions->second.array_items()) {
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if (!rtpExtension.is_object()) {
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RTC_LOG(LS_ERROR) << "Signaling: rtpExtensions items must be objects";
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return absl::nullopt;
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}
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if (const auto parsedRtpExtension = RtpExtension_parse(rtpExtension.object_items())) {
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result.rtpExtensions.push_back(parsedRtpExtension.value());
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} else {
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RTC_LOG(LS_ERROR) << "Signaling: could not parse RtpExtension";
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return absl::nullopt;
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}
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}
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}
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return result;
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}
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std::vector<uint8_t> InitialSetupMessage_serialize(const InitialSetupMessage * const message) {
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json11::Json::object object;
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object.insert(std::make_pair("@type", json11::Json("InitialSetup")));
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object.insert(std::make_pair("ufrag", json11::Json(message->ufrag)));
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object.insert(std::make_pair("pwd", json11::Json(message->pwd)));
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json11::Json::array jsonFingerprints;
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for (const auto &fingerprint : message->fingerprints) {
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json11::Json::object jsonFingerprint;
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jsonFingerprint.insert(std::make_pair("hash", json11::Json(fingerprint.hash)));
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jsonFingerprint.insert(std::make_pair("setup", json11::Json(fingerprint.setup)));
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jsonFingerprint.insert(std::make_pair("fingerprint", json11::Json(fingerprint.fingerprint)));
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jsonFingerprints.emplace_back(std::move(jsonFingerprint));
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}
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object.insert(std::make_pair("fingerprints", json11::Json(std::move(jsonFingerprints))));
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auto json = json11::Json(std::move(object));
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std::string result = json.dump();
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return std::vector<uint8_t>(result.begin(), result.end());
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}
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absl::optional<InitialSetupMessage> InitialSetupMessage_parse(json11::Json::object const &object) {
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const auto ufrag = object.find("ufrag");
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if (ufrag == object.end() || !ufrag->second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: ufrag must be a string";
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return absl::nullopt;
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}
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const auto pwd = object.find("pwd");
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if (pwd == object.end() || !pwd->second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: pwd must be a string";
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return absl::nullopt;
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}
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const auto fingerprints = object.find("fingerprints");
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if (fingerprints == object.end() || !fingerprints->second.is_array()) {
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RTC_LOG(LS_ERROR) << "Signaling: fingerprints must be an array";
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return absl::nullopt;
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}
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std::vector<DtlsFingerprint> parsedFingerprints;
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for (const auto &fingerprintObject : fingerprints->second.array_items()) {
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if (!fingerprintObject.is_object()) {
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RTC_LOG(LS_ERROR) << "Signaling: fingerprints items must be objects";
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return absl::nullopt;
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}
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const auto hash = fingerprintObject.object_items().find("hash");
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if (hash == fingerprintObject.object_items().end() || !hash->second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: hash must be a string";
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return absl::nullopt;
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}
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const auto setup = fingerprintObject.object_items().find("setup");
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if (setup == fingerprintObject.object_items().end() || !setup->second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: setup must be a string";
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return absl::nullopt;
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}
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const auto fingerprint = fingerprintObject.object_items().find("fingerprint");
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if (fingerprint == fingerprintObject.object_items().end() || !fingerprint->second.is_string()) {
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RTC_LOG(LS_ERROR) << "Signaling: fingerprint must be a string";
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return absl::nullopt;
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}
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DtlsFingerprint parsedFingerprint;
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parsedFingerprint.hash = hash->second.string_value();
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parsedFingerprint.setup = setup->second.string_value();
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parsedFingerprint.fingerprint = fingerprint->second.string_value();
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parsedFingerprints.push_back(std::move(parsedFingerprint));
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}
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InitialSetupMessage message;
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message.ufrag = ufrag->second.string_value();
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message.pwd = pwd->second.string_value();
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message.fingerprints = std::move(parsedFingerprints);
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return message;
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}
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std::vector<uint8_t> NegotiateChannelsMessage_serialize(const NegotiateChannelsMessage * const message) {
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json11::Json::object object;
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object.insert(std::make_pair("@type", json11::Json("NegotiateChannels")));
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object.insert(std::make_pair("exchangeId", json11::Json(uint32ToString(message->exchangeId))));
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json11::Json::array contents;
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for (const auto &content : message->contents) {
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contents.push_back(json11::Json(MediaContent_serialize(content)));
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}
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object.insert(std::make_pair("contents", std::move(contents)));
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auto json = json11::Json(std::move(object));
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std::string result = json.dump();
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return std::vector<uint8_t>(result.begin(), result.end());
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}
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absl::optional<NegotiateChannelsMessage> NegotiateChannelsMessage_parse(json11::Json::object const &object) {
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NegotiateChannelsMessage message;
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const auto exchangeId = object.find("exchangeId");
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if (exchangeId == object.end()) {
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RTC_LOG(LS_ERROR) << "Signaling: exchangeId must be present";
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return absl::nullopt;
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} else if (exchangeId->second.is_string()) {
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message.exchangeId = stringToUInt32(exchangeId->second.string_value());
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|
} else if (exchangeId->second.is_number()) {
|
|
message.exchangeId = (uint32_t)exchangeId->second.number_value();
|
|
} else {
|
|
RTC_LOG(LS_ERROR) << "Signaling: exchangeId must be a string or a number";
|
|
return absl::nullopt;
|
|
}
|
|
|
|
const auto contents = object.find("contents");
|
|
if (contents != object.end()) {
|
|
if (!contents->second.is_array()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: contents must be an array";
|
|
return absl::nullopt;
|
|
}
|
|
for (const auto &content : contents->second.array_items()) {
|
|
if (!content.is_object()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: contents items must be objects";
|
|
return absl::nullopt;
|
|
}
|
|
if (auto parsedContent = MediaContent_parse(content.object_items())) {
|
|
message.contents.push_back(std::move(parsedContent.value()));
|
|
} else {
|
|
RTC_LOG(LS_ERROR) << "Signaling: could not parse MediaContent";
|
|
return absl::nullopt;
|
|
}
|
|
}
|
|
}
|
|
|
|
return message;
|
|
}
|
|
|
|
json11::Json::object ConnectionAddress_serialize(ConnectionAddress const &connectionAddress) {
|
|
json11::Json::object object;
|
|
|
|
object.insert(std::make_pair("ip", json11::Json(connectionAddress.ip)));
|
|
object.insert(std::make_pair("port", json11::Json(connectionAddress.port)));
|
|
|
|
return object;
|
|
}
|
|
|
|
absl::optional<ConnectionAddress> ConnectionAddress_parse(json11::Json::object const &object) {
|
|
const auto ip = object.find("ip");
|
|
if (ip == object.end() || !ip->second.is_string()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: ip must be a string";
|
|
return absl::nullopt;
|
|
}
|
|
|
|
const auto port = object.find("port");
|
|
if (port == object.end() || !port->second.is_number()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: port must be a number";
|
|
return absl::nullopt;
|
|
}
|
|
|
|
ConnectionAddress address;
|
|
address.ip = ip->second.string_value();
|
|
address.port = port->second.int_value();
|
|
return address;
|
|
}
|
|
|
|
std::vector<uint8_t> CandidatesMessage_serialize(const CandidatesMessage * const message) {
|
|
json11::Json::array candidates;
|
|
for (const auto &candidate : message->iceCandidates) {
|
|
json11::Json::object candidateObject;
|
|
|
|
candidateObject.insert(std::make_pair("sdpString", json11::Json(candidate.sdpString)));
|
|
|
|
candidates.emplace_back(std::move(candidateObject));
|
|
}
|
|
|
|
json11::Json::object object;
|
|
|
|
object.insert(std::make_pair("@type", json11::Json("Candidates")));
|
|
object.insert(std::make_pair("candidates", json11::Json(std::move(candidates))));
|
|
|
|
auto json = json11::Json(std::move(object));
|
|
std::string result = json.dump();
|
|
return std::vector<uint8_t>(result.begin(), result.end());
|
|
}
|
|
|
|
absl::optional<CandidatesMessage> CandidatesMessage_parse(json11::Json::object const &object) {
|
|
const auto candidates = object.find("candidates");
|
|
if (candidates == object.end() || !candidates->second.is_array()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: candidates must be an array";
|
|
return absl::nullopt;
|
|
}
|
|
|
|
std::vector<IceCandidate> parsedCandidates;
|
|
for (const auto &candidateObject : candidates->second.array_items()) {
|
|
if (!candidateObject.is_object()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: candidates items must be objects";
|
|
return absl::nullopt;
|
|
}
|
|
|
|
IceCandidate candidate;
|
|
|
|
const auto sdpString = candidateObject.object_items().find("sdpString");
|
|
if (sdpString == candidateObject.object_items().end() || !sdpString->second.is_string()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: sdpString must be a string";
|
|
return absl::nullopt;
|
|
}
|
|
candidate.sdpString = sdpString->second.string_value();
|
|
|
|
parsedCandidates.push_back(std::move(candidate));
|
|
}
|
|
|
|
CandidatesMessage message;
|
|
message.iceCandidates = std::move(parsedCandidates);
|
|
|
|
return message;
|
|
}
|
|
|
|
std::vector<uint8_t> MediaStateMessage_serialize(const MediaStateMessage * const message) {
|
|
json11::Json::object object;
|
|
|
|
object.insert(std::make_pair("@type", json11::Json("MediaState")));
|
|
object.insert(std::make_pair("muted", json11::Json(message->isMuted)));
|
|
object.insert(std::make_pair("lowBattery", json11::Json(message->isBatteryLow)));
|
|
|
|
std::string videoStateValue;
|
|
switch (message->videoState) {
|
|
case MediaStateMessage::VideoState::Inactive: {
|
|
videoStateValue = "inactive";
|
|
break;
|
|
}
|
|
case MediaStateMessage::VideoState::Suspended: {
|
|
videoStateValue = "suspended";
|
|
break;
|
|
}
|
|
case MediaStateMessage::VideoState::Active: {
|
|
videoStateValue = "active";
|
|
break;
|
|
}
|
|
default: {
|
|
RTC_FATAL() << "Unknown videoState";
|
|
break;
|
|
}
|
|
}
|
|
object.insert(std::make_pair("videoState", json11::Json(videoStateValue)));
|
|
|
|
int videoRotationValue = 0;
|
|
switch (message->videoRotation) {
|
|
case MediaStateMessage::VideoRotation::Rotation0: {
|
|
videoRotationValue = 0;
|
|
break;
|
|
}
|
|
case MediaStateMessage::VideoRotation::Rotation90: {
|
|
videoRotationValue = 90;
|
|
break;
|
|
}
|
|
case MediaStateMessage::VideoRotation::Rotation180: {
|
|
videoRotationValue = 180;
|
|
break;
|
|
}
|
|
case MediaStateMessage::VideoRotation::Rotation270: {
|
|
videoRotationValue = 270;
|
|
break;
|
|
}
|
|
default: {
|
|
RTC_FATAL() << "Unknown videoRotation";
|
|
break;
|
|
}
|
|
}
|
|
object.insert(std::make_pair("videoRotation", json11::Json(videoRotationValue)));
|
|
|
|
std::string screencastStateValue;
|
|
switch (message->screencastState) {
|
|
case MediaStateMessage::VideoState::Inactive: {
|
|
screencastStateValue = "inactive";
|
|
break;
|
|
}
|
|
case MediaStateMessage::VideoState::Suspended: {
|
|
screencastStateValue = "suspended";
|
|
break;
|
|
}
|
|
case MediaStateMessage::VideoState::Active: {
|
|
screencastStateValue = "active";
|
|
break;
|
|
}
|
|
default: {
|
|
RTC_FATAL() << "Unknown videoState";
|
|
break;
|
|
}
|
|
}
|
|
object.insert(std::make_pair("screencastState", json11::Json(screencastStateValue)));
|
|
|
|
auto json = json11::Json(std::move(object));
|
|
std::string result = json.dump();
|
|
return std::vector<uint8_t>(result.begin(), result.end());
|
|
}
|
|
|
|
absl::optional<MediaStateMessage> MediaStateMessage_parse(json11::Json::object const &object) {
|
|
MediaStateMessage message;
|
|
|
|
const auto muted = object.find("muted");
|
|
if (muted != object.end()) {
|
|
if (!muted->second.is_bool()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: muted must be a bool";
|
|
return absl::nullopt;
|
|
}
|
|
message.isMuted = muted->second.bool_value();
|
|
}
|
|
|
|
const auto lowBattery = object.find("lowBattery");
|
|
if (lowBattery != object.end()) {
|
|
if (!lowBattery->second.is_bool()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: lowBattery must be a bool";
|
|
return absl::nullopt;
|
|
}
|
|
message.isBatteryLow = lowBattery->second.bool_value();
|
|
}
|
|
|
|
const auto videoState = object.find("videoState");
|
|
if (videoState != object.end()) {
|
|
if (!videoState->second.is_string()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: videoState must be a string";
|
|
return absl::nullopt;
|
|
}
|
|
if (videoState->second.string_value() == "inactive") {
|
|
message.videoState = MediaStateMessage::VideoState::Inactive;
|
|
} else if (videoState->second.string_value() == "suspended") {
|
|
message.videoState = MediaStateMessage::VideoState::Suspended;
|
|
} else if (videoState->second.string_value() == "active") {
|
|
message.videoState = MediaStateMessage::VideoState::Active;
|
|
} else {
|
|
RTC_LOG(LS_ERROR) << "videoState must be one of [\"inactive\", \"suspended\", \"active\"]";
|
|
}
|
|
} else {
|
|
message.videoState = MediaStateMessage::VideoState::Inactive;
|
|
}
|
|
|
|
const auto screencastState = object.find("screencastState");
|
|
if (screencastState != object.end()) {
|
|
if (!screencastState->second.is_string()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: screencastState must be a string";
|
|
return absl::nullopt;
|
|
}
|
|
if (screencastState->second.string_value() == "inactive") {
|
|
message.screencastState = MediaStateMessage::VideoState::Inactive;
|
|
} else if (screencastState->second.string_value() == "suspended") {
|
|
message.screencastState = MediaStateMessage::VideoState::Suspended;
|
|
} else if (screencastState->second.string_value() == "active") {
|
|
message.screencastState = MediaStateMessage::VideoState::Active;
|
|
} else {
|
|
RTC_LOG(LS_ERROR) << "Signaling: screencastState must be one of [\"inactive\", \"suspended\", \"active\"]";
|
|
}
|
|
} else {
|
|
message.screencastState = MediaStateMessage::VideoState::Inactive;
|
|
}
|
|
|
|
const auto videoRotation = object.find("videoRotation");
|
|
if (videoRotation != object.end()) {
|
|
if (!videoRotation->second.is_number()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: videoRotation must be a number";
|
|
return absl::nullopt;
|
|
}
|
|
if (videoState->second.int_value() == 0) {
|
|
message.videoRotation = MediaStateMessage::VideoRotation::Rotation0;
|
|
} else if (videoState->second.int_value() == 90) {
|
|
message.videoRotation = MediaStateMessage::VideoRotation::Rotation90;
|
|
} else if (videoState->second.int_value() == 180) {
|
|
message.videoRotation = MediaStateMessage::VideoRotation::Rotation180;
|
|
} else if (videoState->second.int_value() == 270) {
|
|
message.videoRotation = MediaStateMessage::VideoRotation::Rotation270;
|
|
} else {
|
|
RTC_LOG(LS_ERROR) << "Signaling: videoRotation must be one of [0, 90, 180, 270]";
|
|
message.videoRotation = MediaStateMessage::VideoRotation::Rotation0;
|
|
}
|
|
} else {
|
|
message.videoRotation = MediaStateMessage::VideoRotation::Rotation0;
|
|
}
|
|
|
|
return message;
|
|
}
|
|
|
|
std::vector<uint8_t> Message::serialize() const {
|
|
if (const auto initialSetup = absl::get_if<InitialSetupMessage>(&data)) {
|
|
return InitialSetupMessage_serialize(initialSetup);
|
|
} else if (const auto candidates = absl::get_if<CandidatesMessage>(&data)) {
|
|
return CandidatesMessage_serialize(candidates);
|
|
} else if (const auto mediaState = absl::get_if<MediaStateMessage>(&data)) {
|
|
return MediaStateMessage_serialize(mediaState);
|
|
} else if (const auto negotiateChannels = absl::get_if<NegotiateChannelsMessage>(&data)) {
|
|
return NegotiateChannelsMessage_serialize(negotiateChannels);
|
|
} else {
|
|
return {};
|
|
}
|
|
}
|
|
|
|
absl::optional<Message> Message::parse(const std::vector<uint8_t> &data) {
|
|
std::string parsingError;
|
|
auto json = json11::Json::parse(std::string(data.begin(), data.end()), parsingError);
|
|
if (json.type() != json11::Json::OBJECT) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: message must be an object";
|
|
return absl::nullopt;
|
|
}
|
|
|
|
auto type = json.object_items().find("@type");
|
|
if (type == json.object_items().end()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: message does not contain @type attribute";
|
|
return absl::nullopt;
|
|
}
|
|
if (!type->second.is_string()) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: @type attribute must be a string";
|
|
return absl::nullopt;
|
|
}
|
|
if (type->second.string_value() == "InitialSetup") {
|
|
auto parsed = InitialSetupMessage_parse(json.object_items());
|
|
if (!parsed) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: could not parse " << type->second.string_value() << " message";
|
|
return absl::nullopt;
|
|
}
|
|
Message message;
|
|
message.data = std::move(parsed.value());
|
|
return message;
|
|
} else if (type->second.string_value() == "NegotiateChannels") {
|
|
auto parsed = NegotiateChannelsMessage_parse(json.object_items());
|
|
if (!parsed) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: could not parse " << type->second.string_value() << " message";
|
|
return absl::nullopt;
|
|
}
|
|
Message message;
|
|
message.data = std::move(parsed.value());
|
|
return message;
|
|
} else if (type->second.string_value() == "Candidates") {
|
|
auto parsed = CandidatesMessage_parse(json.object_items());
|
|
if (!parsed) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: could not parse " << type->second.string_value() << " message";
|
|
return absl::nullopt;
|
|
}
|
|
Message message;
|
|
message.data = std::move(parsed.value());
|
|
return message;
|
|
} else if (type->second.string_value() == "MediaState") {
|
|
auto parsed = MediaStateMessage_parse(json.object_items());
|
|
if (!parsed) {
|
|
RTC_LOG(LS_ERROR) << "Signaling: could not parse " << type->second.string_value() << " message";
|
|
return absl::nullopt;
|
|
}
|
|
Message message;
|
|
message.data = std::move(parsed.value());
|
|
return message;
|
|
} else {
|
|
RTC_LOG(LS_ERROR) << "Signaling: unknown message type " << type->second.string_value();
|
|
return absl::nullopt;
|
|
}
|
|
}
|
|
|
|
} // namespace signaling
|
|
|
|
} // namespace tgcalls
|