bool SDP::ParseSDP(SDP &sdp, string &raw) {
//FINEST("%s", STR(raw));
//1. Reset
sdp.Reset();
//2. Prepare the sections
sdp[SDP_SESSION].IsArray(false);
sdp[SDP_MEDIATRACKS].IsArray(true);
//3. Split the raw content into lines
replace(raw, "\r\n", "\n");
vector<string> lines;
split(raw, "\n", lines);
//4. Detect the media tracks indexes
vector<uint32_t> trackIndexes;
for (uint32_t i = 0; i < lines.size(); i++) {
trim(lines[i]);
if (lines[i].find("m=") == 0) {
ADD_VECTOR_END(trackIndexes, i);
}
}
if (trackIndexes.size() == 0) {
FATAL("No tracks found");
return false;
}
//5. Parse the header
if (!ParseSection(sdp[SDP_SESSION], lines, 0, trackIndexes[0])) {
FATAL("Unable to parse header");
return false;
}
//6. Parse the media sections
Variant media;
for (uint32_t i = 0; i < trackIndexes.size() - 1; i++) {
media.Reset();
media.IsArray(false);
if (!ParseSection(media, lines, trackIndexes[i], trackIndexes[i + 1] - trackIndexes[i])) {
FATAL("Unable to parse header");
return false;
}
sdp[SDP_MEDIATRACKS].PushToArray(media);
}
//7. Parse the last media section
media.Reset();
media.IsArray(false);
if (!ParseSection(media, lines,
trackIndexes[(uint32_t) trackIndexes.size() - 1],
(uint32_t) trackIndexes.size() - trackIndexes[(uint32_t) trackIndexes.size() - 1])) {
FATAL("Unable to parse header");
return false;
}
sdp[SDP_MEDIATRACKS].PushToArray(media);
return true;
}
bool SDP::ParseSDPLineA(string &attributeName, Variant &value, string line) {
string::size_type pos = line.find(':');
if ((pos == string::npos)
|| (pos == 0)
|| (pos == (line.size() - 1))) {
attributeName = line;
value = (bool)true;
return true;
}
attributeName = line.substr(0, pos);
string rawValue = line.substr(line.find(':') + 1);
if (attributeName == "control") {
value = rawValue;
return true;
} else if (attributeName == "maxprate") {
value = (double) strtod(STR(rawValue), NULL);
return true;
} else if (attributeName.find("x-") == 0) {
value = rawValue;
return true;
} else if (attributeName == "rtpmap") {
//rtpmap:<payload type> <encoding name>/<clock rate>[/<encoding parameters>]
vector<string> parts;
split(rawValue, " ", parts);
if (parts.size() != 2)
return false;
value["payloadType"] = (uint8_t) atoi(STR(parts[0]));
split(parts[1], "/", parts);
if ((parts.size() != 2) && (parts.size() != 3))
return false;
value["encodingName"] = parts[0];
if (lowerCase((string) value["encodingName"]) == "h264") {
value["encodingName"] = (uint64_t) CODEC_VIDEO_AVC;
} else if ((string) lowerCase(value["encodingName"]) == "mpeg4-generic") {
value["encodingName"] = (uint64_t) CODEC_AUDIO_AAC;
} else {
WARN("Invalid codec");
value.Reset();
return true;
}
value["clockRate"] = (uint32_t) atoi(STR(parts[1]));
if (parts.size() == 3) {
value["encodingParameters"] = parts[2];
}
return true;
} else if (attributeName == "fmtp") {
replace(rawValue, "; ", ";");
vector<string> parts;
split(rawValue, " ", parts);
if (parts.size() != 2)
return false;
value["payloadType"] = (uint8_t) atoi(STR(parts[0]));
map<string, string> temp = mapping(parts[1], ";", "=", false);
FOR_MAP(temp, string, string, i) {
value[MAP_KEY(i)] = MAP_VAL(i);
}
void RTSPProtocol::GetStats(Variant &info, uint32_t namespaceId) {
BaseProtocol::GetStats(info, namespaceId);
info["streams"].IsArray(true);
Variant si;
if (GetApplication() != NULL) {
StreamsManager *pStreamsManager = GetApplication()->GetStreamsManager();
map<uint32_t, BaseStream*> streams = pStreamsManager->FindByProtocolId(GetId());
FOR_MAP(streams, uint32_t, BaseStream *, i) {
si.Reset();
MAP_VAL(i)->GetStats(si, namespaceId);
info["streams"].PushToArray(si);
}
bool PopStack(lua_State *pLuaState, Variant &variant) {
variant.Reset();
variant.IsArray(true);
while (lua_gettop(pLuaState) > 0) {
Variant temp;
if (!PopVariant(pLuaState, temp)) {
FATAL("Unable to pop variant");
return false;
}
variant.PushToArray(temp);
}
return true;
}
bool SDP::ParseTransportLine(string raw, Variant &result) {
//raw = "MP2T/H2221/UDP;unicast;destination=192.168.1.150;client_port=11112,MP2T/H2221/UDP;multicast,RAW/RAW/UDP;unicast;destination=192.168.1.150;client_port=11112,RAW/RAW/UDP;multicast";
//raw = "MP2T/H2221/UDP;unicast;destination=192.168.1.150;client_port=11112," + raw;
result.Reset();
result["original"] = raw;
result["alternatives"].IsArray(true);
vector<string> parts;
split(raw, ",", parts);
for (vector<string>::size_type i = 0; i < parts.size(); i++) {
Variant temp;
if (!ParseTransportLinePart(parts[i], temp)) {
WARN("Invalid transport part: %s", STR(parts[i]));
continue;
}
result["alternatives"].PushToArray(temp);
}
//FINEST("%s", STR(result.ToString()));
return result["alternatives"].MapSize() != 0;
}
bool RTMPProtocolSerializer::Deserialize(Header &header, IOBuffer &buffer,
Variant &message) {
message.Reset();
message[RM_HEADER] = header.GetVariant();
switch (H_MT(header)) {
case RM_HEADER_MESSAGETYPE_NOTIFY:
{
return DeserializeNotify(buffer, message[RM_NOTIFY]);
}
case RM_HEADER_MESSAGETYPE_FLEXSTREAMSEND:
{
return DeserializeFlexStreamSend(buffer, message[RM_FLEXSTREAMSEND]);
}
case RM_HEADER_MESSAGETYPE_INVOKE:
case RM_HEADER_MESSAGETYPE_FLEX:
{
message[RM_INVOKE][RM_INVOKE_IS_FLEX] =
(bool)(H_MT(header) == RM_HEADER_MESSAGETYPE_FLEX);
return DeserializeInvoke(buffer, message[RM_INVOKE]);
}
case RM_HEADER_MESSAGETYPE_FLEXSHAREDOBJECT:
{
//TODO: This is a hack. We store the data on RM_SHAREDOBJECT
//instead of RM_FLEXSHAREDOBJECT
//return DeserializeFlexSharedObject(buffer, message[RM_FLEXSHAREDOBJECT]);
return DeserializeFlexSharedObject(buffer, message[RM_SHAREDOBJECT]);
}
case RM_HEADER_MESSAGETYPE_SHAREDOBJECT:
{
return DeserializeSharedObject(buffer, message[RM_SHAREDOBJECT]);
}
case RM_HEADER_MESSAGETYPE_USRCTRL:
{
return DeserializeUsrCtrl(buffer, message[RM_USRCTRL]);
}
case RM_HEADER_MESSAGETYPE_CHUNKSIZE:
{
return DeserializeChunkSize(buffer, message[RM_CHUNKSIZE]);
}
case RM_HEADER_MESSAGETYPE_ACK:
{
return DeserializeAck(buffer, message[RM_ACK]);
}
case RM_HEADER_MESSAGETYPE_WINACKSIZE:
{
return DeserializeWinAckSize(buffer, message[RM_WINACKSIZE]);
}
case RM_HEADER_MESSAGETYPE_PEERBW:
{
return DeserializePeerBW(buffer, message[RM_PEERBW]);
}
case RM_HEADER_MESSAGETYPE_ABORTMESSAGE:
{
return DeserializeAbortMessage(buffer, message[RM_ABORTMESSAGE]);
}
default:
{
FATAL("Invalid message type: %u %s", H_MT(header), STR(buffer));
return false;
}
}
}
bool parseURI(string stringUri, URI &uri) {
/*
* schema://[username[:password]@]host[:port][/[path[?parameters]]]
*/
LOG_URI("------------------------");
LOG_URI("stringUri: `%s`", STR(stringUri));
string fullUri;
string fullUriWithAuth = stringUri;
string scheme;
string authentication;
string username;
string password;
string hostPort;
string host;
string portString;
uint16_t port;
bool portSpecified;
string fullDocumentPathWithParameters;
string fullDocumentPath;
string fullParameters;
string documentPath;
string document;
string documentWithFullParameters;
Variant parameters;
string::size_type cursor = 0;
string::size_type pos = 0;
//1. Reset
uri.Reset();
//2. trim
trim(stringUri);
if (stringUri == "") {
FATAL("Empty uri");
return false;
}
//2. Get the scheme and the default port
pos = stringUri.find("://", cursor);
if (pos == string::npos) {
FATAL("Unable to determine scheme");
return false;
}
scheme = lowerCase(stringUri.substr(cursor, pos - cursor));
cursor = pos + 3;
if (_schemeToPort.size() == 0) {
_schemeToPort["http"] = 80;
_schemeToPort["rtmpt"] = 80;
_schemeToPort["rtmpte"] = 80;
_schemeToPort["https"] = 443;
_schemeToPort["rtmps"] = 443;
_schemeToPort["rtsp"] = 554;
_schemeToPort["rtmp"] = 1935;
_schemeToPort["rtmpe"] = 1935;
_schemeToPort["mms"] = 1755;
}
if (MAP_HAS1(_schemeToPort, scheme)) {
port = _schemeToPort[scheme];
}
// else {
// FATAL("Scheme `%s` not supported", STR(scheme));
// return false;
// }
LOG_URI("scheme: %s; default port: %"PRIu16, STR(scheme), port);
//3. get the authentication portion. the search starts from
//where the scheme detection left and up to the first / character
string::size_type limit = stringUri.find("/", cursor);
bool hasAuthentication = false;
pos = stringUri.find("@", cursor);
if (pos != string::npos) {
if (limit != string::npos) {
hasAuthentication = pos<limit;
}
hasAuthentication = true;
}
if (hasAuthentication) {
authentication = stringUri.substr(cursor, pos - cursor);
fullUri = stringUri.substr(0, cursor);
fullUri += stringUri.substr(pos + 1);
cursor = pos + 1;
} else {
fullUri = fullUriWithAuth;
}
if (authentication != "") {
pos = authentication.find(":");
if (pos != string::npos) {
username = authentication.substr(0, pos);
password = authentication.substr(pos + 1);
} else {
username = authentication;
password = "";
}
}
LOG_URI("fullUri: `%s`; fullUriWithAuth: `%s`", STR(fullUri), STR(fullUriWithAuth));
LOG_URI("username: `%s`; password: `%s`", STR(username), STR(password));
//4. Get the host:port
pos = stringUri.find("/", cursor);
if (pos == string::npos) {
hostPort = stringUri.substr(cursor);
cursor = stringUri.size() - 1;
fullDocumentPathWithParameters = "/";
} else {
hostPort = stringUri.substr(cursor, pos - cursor);
cursor = pos + 1;
fullDocumentPathWithParameters = "/" + stringUri.substr(cursor);
}
trim(hostPort);
if (hostPort == "") {
FATAL("Invalid host:port specified");
return false;
}
pos = hostPort.find(":");
if (pos == string::npos) {
host = hostPort;
portSpecified = false;
} else {
host = hostPort.substr(0, pos);
trim(host);
portString = hostPort.substr(pos + 1);
portSpecified = true;
port = (uint16_t) atoi(STR(portString));
if (format("%"PRIu16, port) != portString) {
FATAL("Invalid port number specified: `%s`", STR(portString));
return false;
}
}
LOG_URI("host: %s; port: %"PRIu16"; portSpecified: %d", STR(host), port, portSpecified);
//5. fullDocumentPathWithParameters
fullDocumentPath = "/";
fullParameters = "";
documentPath = "/";
document = "";
documentWithFullParameters = "";
parameters.Reset();
parameters.IsArray(false);
if (fullDocumentPathWithParameters != "/") {
pos = fullDocumentPathWithParameters.find("?");
if (pos == string::npos) {
fullDocumentPath = fullDocumentPathWithParameters;
fullParameters = "";
} else {
fullDocumentPath = fullDocumentPathWithParameters.substr(0, pos);
fullParameters = fullDocumentPathWithParameters.substr(pos + 1);
}
trim(fullParameters);
if (fullParameters != "") {
vector<string> elements;
split(fullParameters, "&", elements);
for (uint32_t i = 0; i < elements.size(); i++) {
string kvp = elements[i];
if (kvp == "")
continue;
string k = "";
string v = "";
pos = kvp.find("=");
if (pos == string::npos) {
k = kvp;
v = "";
} else {
k = kvp.substr(0, pos);
v = kvp.substr(pos + 1);
}
if (k == "")
continue;
parameters[k] = v;
}
}
for (string::size_type i = fullDocumentPath.size() - 1; i >= 0; i--) {
if (fullDocumentPath[i] == '/')
break;
document = fullDocumentPath[i] + document;
}
documentPath = fullDocumentPath.substr(0, fullDocumentPath.size() - document.size());
documentWithFullParameters = document;
if (fullParameters != "")
documentWithFullParameters += "?" + fullParameters;
}
LOG_URI("fullDocumentPathWithParameters: `%s`", STR(fullDocumentPathWithParameters));
LOG_URI("fullDocumentPath: `%s`", STR(fullDocumentPath));
LOG_URI("fullParameters: `%s`", STR(fullParameters));
LOG_URI("documentPath: `%s`", STR(documentPath));
LOG_URI("document: `%s`", STR(document));
LOG_URI("documentWithFullParameters: `%s`", STR(documentWithFullParameters));
LOG_URI("parameters:");
#ifdef DEBUG_URI
FOR_MAP(parameters, string, Variant, i) {
LOG_URI("\t`%s`: `%s`", STR(MAP_KEY(i)), STR(MAP_VAL(i)));
}
bool SDP::ParseTransportLinePart(string raw, Variant &result) {
result.Reset();
result["original"] = raw;
//1. split after ';'
vector<string> parts;
split(raw, ";", parts);
//2. Construct the result
for (uint32_t i = 0; i < parts.size(); i++) {
string part = parts[i];
trim(part);
if (part == "")
continue;
string::size_type pos = part.find('=');
if (pos == string::npos) {
result[lowerCase(part)] = (bool)true;
continue;
}
result[lowerCase(part.substr(0, pos))] = part.substr(pos + 1);
}
vector<string> keys;
ADD_VECTOR_END(keys, "client_port");
ADD_VECTOR_END(keys, "server_port");
ADD_VECTOR_END(keys, "interleaved");
for (uint32_t i = 0; i < keys.size(); i++) {
string key = keys[i];
if (!result.HasKey(key))
continue;
parts.clear();
raw = (string) result[key];
split(raw, "-", parts);
if ((parts.size() != 2) && (parts.size() != 1)) {
FATAL("Invalid transport line: %s", STR(raw));
return false;
}
string all = "";
uint16_t data = 0;
uint16_t rtcp = 0;
if (parts.size() == 2) {
data = (uint16_t) atoi(STR(parts[0]));
rtcp = (uint16_t) atoi(STR(parts[1]));
if (((data % 2) != 0) || ((data + 1) != rtcp)) {
FATAL("Invalid transport line: %s", STR(raw));
return false;
}
all = format("%"PRIu16"-%"PRIu16, data, rtcp);
} else {
data = (uint16_t) atoi(STR(parts[0]));
all = format("%"PRIu16, data);
rtcp = 0;
}
if (all != raw) {
FATAL("Invalid transport line: %s", STR(raw));
return false;
}
result.RemoveKey(key);
result[key]["data"] = (uint16_t) data;
result[key]["rtcp"] = (uint16_t) rtcp;
result[key]["all"] = all;
}
return true;
}
bool PopVariant(lua_State *pLuaState, Variant &variant, int32_t idx, bool pop) {
variant.Reset();
int32_t type = lua_type(pLuaState, idx);
switch (type) {
case LUA_TNIL:
{
variant.Reset();
if (pop)
lua_remove(pLuaState, idx);
break;
}
case LUA_TBOOLEAN:
{
variant = (bool)(lua_toboolean(pLuaState, idx) != 0);
if (pop)
lua_remove(pLuaState, idx);
break;
}
case LUA_TNUMBER:
{
lua_Number luaNumber = lua_tonumber(pLuaState, idx);
if (pop)
lua_remove(pLuaState, idx);
variant = (double) luaNumber;
variant.Compact();
break;
}
case LUA_TSTRING:
{
string nullable = lua_tostring(pLuaState, idx);
if (pop)
lua_remove(pLuaState, idx);
if (nullable == VAR_NULL_VALUE)
variant = Variant();
else
variant = nullable;
break;
}
case LUA_TTABLE:
{
bool isArray = true;
lua_pushnil(pLuaState);
while (lua_next(pLuaState, idx) != 0) {
Variant value;
if (!PopVariant(pLuaState, value, lua_gettop(pLuaState)))
return false;
Variant key;
if (!PopVariant(pLuaState, key, lua_gettop(pLuaState), false))
return false;
variant[key] = value;
isArray &= (key == _V_NUMERIC);
}
variant.IsArray(isArray);
if (variant.HasKey(VAR_MAP_NAME)) {
variant.SetTypeName(variant[VAR_MAP_NAME]);
variant.RemoveKey(VAR_MAP_NAME);
} else {
variant.ConvertToTimestamp();
}
if (pop)
lua_remove(pLuaState, idx);
break;
}
default:
{
WARN("Element type not supported: %d (0x%x)", type, type);
return false;
break;
}
}
return true;
}
