/// \file amf.cpp /// Holds all code for the AMF namespace. #include "amf.h" #include #include //needed for stderr only /// Returns the std::string Indice for the current object, if available. /// Returns an empty string if no indice exists. std::string AMF::Object::Indice(){return myIndice;}; /// Returns the AMF::obj0type AMF0 object type for this object. AMF::obj0type AMF::Object::GetType(){return myType;}; /// Returns the numeric value of this object, if available. /// If this object holds no numeric value, 0 is returned. double AMF::Object::NumValue(){return numval;}; /// Returns the std::string value of this object, if available. /// If this object holds no string value, an empty string is returned. std::string AMF::Object::StrValue(){return strval;}; /// Returns the C-string value of this object, if available. /// If this object holds no string value, an empty C-string is returned. const char * AMF::Object::Str(){return strval.c_str();}; /// Returns a count of the amount of objects this object currently holds. /// If this object is not a container type, this function will always return 0. int AMF::Object::hasContent(){return contents.size();}; /// Adds an AMF::Object to this object. Works for all types, but only makes sense for container types. void AMF::Object::addContent(AMF::Object c){contents.push_back(c);}; /// Returns a pointer to the object held at indice i. /// Returns AMF::AMF0_DDV_CONTAINER of indice "error" if no object is held at this indice. /// \param i The indice of the object in this container. AMF::Object* AMF::Object::getContentP(int i){return &contents.at(i);}; /// Returns a copy of the object held at indice i. /// Returns a AMF::AMF0_DDV_CONTAINER of indice "error" if no object is held at this indice. /// \param i The indice of the object in this container. AMF::Object AMF::Object::getContent(int i){return contents.at(i);}; /// Returns a pointer to the object held at indice s. /// Returns NULL if no object is held at this indice. /// \param s The indice of the object in this container. AMF::Object* AMF::Object::getContentP(std::string s){ for (std::vector::iterator it = contents.begin(); it != contents.end(); it++){ if (it->Indice() == s){return &(*it);} } return 0; }; /// Returns a copy of the object held at indice s. /// Returns a AMF::AMF0_DDV_CONTAINER of indice "error" if no object is held at this indice. /// \param s The indice of the object in this container. AMF::Object AMF::Object::getContent(std::string s){ for (std::vector::iterator it = contents.begin(); it != contents.end(); it++){ if (it->Indice() == s){return *it;} } return AMF::Object("error", AMF0_DDV_CONTAINER); }; /// Default constructor. /// Simply fills the data with AMF::Object("error", AMF0_DDV_CONTAINER) AMF::Object::Object(){ *this = AMF::Object("error", AMF0_DDV_CONTAINER); };//default constructor /// Constructor for numeric objects. /// The object type is by default AMF::AMF0_NUMBER, but this can be forced to a different value. /// \param indice The string indice of this object in its container, or empty string if none. Numeric indices are automatic. /// \param val The numeric value of this object. Numeric AMF0 objects only support double-type values. /// \param setType The object type to force this object to. AMF::Object::Object(std::string indice, double val, AMF::obj0type setType){//num type initializer myIndice = indice; myType = setType; strval = ""; numval = val; }; /// Constructor for string objects. /// The object type is by default AMF::AMF0_STRING, but this can be forced to a different value. /// There is no need to manually change the type to AMF::AMF0_LONGSTRING, this will be done automatically. /// \param indice The string indice of this object in its container, or empty string if none. Numeric indices are automatic. /// \param val The string value of this object. /// \param setType The object type to force this object to. AMF::Object::Object(std::string indice, std::string val, AMF::obj0type setType){//str type initializer myIndice = indice; myType = setType; strval = val; numval = 0; }; /// Constructor for container objects. /// The object type is by default AMF::AMF0_OBJECT, but this can be forced to a different value. /// \param indice The string indice of this object in its container, or empty string if none. Numeric indices are automatic. /// \param setType The object type to force this object to. AMF::Object::Object(std::string indice, AMF::obj0type setType){//object type initializer myIndice = indice; myType = setType; strval = ""; numval = 0; }; /// Prints the contents of this object to std::cerr. /// If this object contains other objects, it will call itself recursively /// and print all nested content in a nice human-readable format. std::string AMF::Object::Print(std::string indent){ std::stringstream st; st << indent; // print my type switch (myType){ case AMF::AMF0_NUMBER: st << "Number"; break; case AMF::AMF0_BOOL: st << "Bool"; break; case AMF::AMF0_STRING://short string case AMF::AMF0_LONGSTRING: st << "String"; break; case AMF::AMF0_OBJECT: st << "Object"; break; case AMF::AMF0_MOVIECLIP: st << "MovieClip"; break; case AMF::AMF0_NULL: st << "Null"; break; case AMF::AMF0_UNDEFINED: st << "Undefined"; break; case AMF::AMF0_REFERENCE: st << "Reference"; break; case AMF::AMF0_ECMA_ARRAY: st << "ECMA Array"; break; case AMF::AMF0_OBJ_END: st << "Object end"; break; case AMF::AMF0_STRICT_ARRAY: st << "Strict Array"; break; case AMF::AMF0_DATE: st << "Date"; break; case AMF::AMF0_UNSUPPORTED: st << "Unsupported"; break; case AMF::AMF0_RECORDSET: st << "Recordset"; break; case AMF::AMF0_XMLDOC: st << "XML Document"; break; case AMF::AMF0_TYPED_OBJ: st << "Typed Object"; break; case AMF::AMF0_UPGRADE: st << "Upgrade to AMF3"; break; case AMF::AMF0_DDV_CONTAINER: st << "DDVTech Container"; break; } // print my string indice, if available st << " " << myIndice << " "; // print my numeric or string contents switch (myType){ case AMF::AMF0_NUMBER: case AMF::AMF0_BOOL: case AMF::AMF0_REFERENCE: case AMF::AMF0_DATE: st << numval; break; case AMF::AMF0_STRING: case AMF::AMF0_LONGSTRING: case AMF::AMF0_XMLDOC: case AMF::AMF0_TYPED_OBJ: st << strval; break; default: break;//we don't care about the rest, and don't want a compiler warning... } st << std::endl; // if I hold other objects, print those too, recursively. if (contents.size() > 0){ for (std::vector::iterator it = contents.begin(); it != contents.end(); it++){st << it->Print(indent+" ");} } return st.str(); };//print /// Packs the AMF object to a std::string for transfer over the network. /// If the object is a container type, this function will call itself recursively and contain all contents. /// Tip: When sending multiple AMF objects in one go, put them in a single AMF::AMF0_DDV_CONTAINER for easy transfer. std::string AMF::Object::Pack(){ std::string r = ""; //check for string/longstring conversion if ((myType == AMF::AMF0_STRING) && (strval.size() > 0xFFFF)){myType = AMF::AMF0_LONGSTRING;} //skip output of DDV container types, they do not exist. Only output their contents. if (myType != AMF::AMF0_DDV_CONTAINER){r += myType;} //output the properly formatted AMF0 data stream for this object's contents. switch (myType){ case AMF::AMF0_NUMBER: r += *(((char*)&numval)+7); r += *(((char*)&numval)+6); r += *(((char*)&numval)+5); r += *(((char*)&numval)+4); r += *(((char*)&numval)+3); r += *(((char*)&numval)+2); r += *(((char*)&numval)+1); r += *(((char*)&numval)); break; case AMF::AMF0_DATE: r += *(((char*)&numval)+7); r += *(((char*)&numval)+6); r += *(((char*)&numval)+5); r += *(((char*)&numval)+4); r += *(((char*)&numval)+3); r += *(((char*)&numval)+2); r += *(((char*)&numval)+1); r += *(((char*)&numval)); r += (char)0;//timezone always 0 r += (char)0;//timezone always 0 break; case AMF::AMF0_BOOL: r += (char)numval; break; case AMF::AMF0_STRING: r += strval.size() / 256; r += strval.size() % 256; r += strval; break; case AMF::AMF0_LONGSTRING: case AMF::AMF0_XMLDOC://is always a longstring r += strval.size() / (256*256*256); r += strval.size() / (256*256); r += strval.size() / 256; r += strval.size() % 256; r += strval; break; case AMF::AMF0_TYPED_OBJ: r += Indice().size() / 256; r += Indice().size() % 256; r += Indice(); //is an object, with the classname first case AMF::AMF0_OBJECT: if (contents.size() > 0){ for (std::vector::iterator it = contents.begin(); it != contents.end(); it++){ r += it->Indice().size() / 256; r += it->Indice().size() % 256; r += it->Indice(); r += it->Pack(); } } r += (char)0; r += (char)0; r += (char)9; break; case AMF::AMF0_MOVIECLIP: case AMF::AMF0_OBJ_END: case AMF::AMF0_UPGRADE: case AMF::AMF0_NULL: case AMF::AMF0_UNDEFINED: case AMF::AMF0_RECORDSET: case AMF::AMF0_UNSUPPORTED: //no data to add break; case AMF::AMF0_REFERENCE: r += (char)((int)numval / 256); r += (char)((int)numval % 256); break; case AMF::AMF0_ECMA_ARRAY:{ int arrlen = 0; if (contents.size() > 0){ arrlen = contents.size(); r += arrlen / (256*256*256); r += arrlen / (256*256); r += arrlen / 256; r += arrlen % 256; for (std::vector::iterator it = contents.begin(); it != contents.end(); it++){ r += it->Indice().size() / 256; r += it->Indice().size() % 256; r += it->Indice(); r += it->Pack(); } }else{ r += (char)0; r += (char)0; r += (char)0; r += (char)0; } r += (char)0; r += (char)0; r += (char)9; } break; case AMF::AMF0_STRICT_ARRAY:{ int arrlen = 0; if (contents.size() > 0){ arrlen = contents.size(); r += arrlen / (256*256*256); r += arrlen / (256*256); r += arrlen / 256; r += arrlen % 256; for (std::vector::iterator it = contents.begin(); it != contents.end(); it++){ r += it->Pack(); } }else{ r += (char)0; r += (char)0; r += (char)0; r += (char)0; } } break; case AMF::AMF0_DDV_CONTAINER://only send contents if (contents.size() > 0){ for (std::vector::iterator it = contents.begin(); it != contents.end(); it++){ r += it->Pack(); } } break; } return r; };//pack /// Parses a single AMF0 type - used recursively by the AMF::parse() functions. /// This function updates i every call with the new position in the data. /// \param data The raw data to parse. /// \param len The size of the raw data. /// \param i Current parsing position in the raw data. /// \param name Indice name for any new object created. /// \returns A single AMF::Object, parsed from the raw data. AMF::Object AMF::parseOne(const unsigned char *& data, unsigned int &len, unsigned int &i, std::string name){ std::string tmpstr; unsigned int tmpi = 0; unsigned char tmpdbl[8]; #if DEBUG >= 10 fprintf(stderr, "Note: AMF type %hhx found. %i bytes left\n", data[i], len-i); #endif switch (data[i]){ case AMF::AMF0_NUMBER: tmpdbl[7] = data[i+1]; tmpdbl[6] = data[i+2]; tmpdbl[5] = data[i+3]; tmpdbl[4] = data[i+4]; tmpdbl[3] = data[i+5]; tmpdbl[2] = data[i+6]; tmpdbl[1] = data[i+7]; tmpdbl[0] = data[i+8]; i+=9;//skip 8(a double)+1 forwards return AMF::Object(name, *(double*)tmpdbl, AMF::AMF0_NUMBER); break; case AMF::AMF0_DATE: tmpdbl[7] = data[i+1]; tmpdbl[6] = data[i+2]; tmpdbl[5] = data[i+3]; tmpdbl[4] = data[i+4]; tmpdbl[3] = data[i+5]; tmpdbl[2] = data[i+6]; tmpdbl[1] = data[i+7]; tmpdbl[0] = data[i+8]; i+=11;//skip 8(a double)+1+timezone(2) forwards return AMF::Object(name, *(double*)tmpdbl, AMF::AMF0_DATE); break; case AMF::AMF0_BOOL: i+=2;//skip bool+1 forwards if (data[i-1] == 0){ return AMF::Object(name, (double)0, AMF::AMF0_BOOL); }else{ return AMF::Object(name, (double)1, AMF::AMF0_BOOL); } break; case AMF::AMF0_REFERENCE: tmpi = data[i+1]*256+data[i+2];//get the ref number value as a double i+=3;//skip ref+1 forwards return AMF::Object(name, (double)tmpi, AMF::AMF0_REFERENCE); break; case AMF::AMF0_XMLDOC: tmpi = data[i+1]*256*256*256+data[i+2]*256*256+data[i+3]*256+data[i+4];//set tmpi to UTF-8-long length tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char *)data+i+5, (size_t)tmpi);//add the string data i += tmpi + 5;//skip length+size+1 forwards return AMF::Object(name, tmpstr, AMF::AMF0_XMLDOC); break; case AMF::AMF0_LONGSTRING: tmpi = data[i+1]*256*256*256+data[i+2]*256*256+data[i+3]*256+data[i+4];//set tmpi to UTF-8-long length tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char *)data+i+5, (size_t)tmpi);//add the string data i += tmpi + 5;//skip length+size+1 forwards return AMF::Object(name, tmpstr, AMF::AMF0_LONGSTRING); break; case AMF::AMF0_STRING: tmpi = data[i+1]*256+data[i+2];//set tmpi to UTF-8 length tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char *)data+i+3, (size_t)tmpi);//add the string data i += tmpi + 3;//skip length+size+1 forwards return AMF::Object(name, tmpstr, AMF::AMF0_STRING); break; case AMF::AMF0_NULL: case AMF::AMF0_UNDEFINED: case AMF::AMF0_UNSUPPORTED: ++i; return AMF::Object(name, (double)0, (AMF::obj0type)data[i-1]); break; case AMF::AMF0_OBJECT:{ ++i; AMF::Object ret(name, AMF::AMF0_OBJECT); while (data[i] + data[i+1] != 0){//while not encountering 0x0000 (we assume 0x000009) tmpi = data[i]*256+data[i+1];//set tmpi to the UTF-8 length tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char*)data+i+2, (size_t)tmpi);//add the string data i += tmpi + 2;//skip length+size forwards ret.addContent(AMF::parseOne(data, len, i, tmpstr));//add content, recursively parsed, updating i, setting indice to tmpstr } i += 3;//skip 0x000009 return ret; } break; case AMF::AMF0_TYPED_OBJ:{ ++i; tmpi = data[i]*256+data[i+1];//set tmpi to the UTF-8 length tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char*)data+i+2, (size_t)tmpi);//add the string data AMF::Object ret(tmpstr, AMF::AMF0_TYPED_OBJ);//the object is not named "name" but tmpstr while (data[i] + data[i+1] != 0){//while not encountering 0x0000 (we assume 0x000009) tmpi = data[i]*256+data[i+1];//set tmpi to the UTF-8 length tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char*)data+i+2, (size_t)tmpi);//add the string data i += tmpi + 2;//skip length+size forwards ret.addContent(AMF::parseOne(data, len, i, tmpstr));//add content, recursively parsed, updating i, setting indice to tmpstr } i += 3;//skip 0x000009 return ret; } break; case AMF::AMF0_ECMA_ARRAY:{ ++i; AMF::Object ret(name, AMF::AMF0_ECMA_ARRAY); i += 4;//ignore the array length, we re-calculate it while (data[i] + data[i+1] != 0){//while not encountering 0x0000 (we assume 0x000009) tmpi = data[i]*256+data[i+1];//set tmpi to the UTF-8 length tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char*)data+i+2, (size_t)tmpi);//add the string data i += tmpi + 2;//skip length+size forwards ret.addContent(AMF::parseOne(data, len, i, tmpstr));//add content, recursively parsed, updating i, setting indice to tmpstr } i += 3;//skip 0x000009 return ret; } break; case AMF::AMF0_STRICT_ARRAY:{ AMF::Object ret(name, AMF::AMF0_STRICT_ARRAY); tmpi = data[i+1]*256*256*256+data[i+2]*256*256+data[i+3]*256+data[i+4];//set tmpi to array length i += 5;//skip size+1 forwards while (tmpi > 0){//while not done parsing array ret.addContent(AMF::parseOne(data, len, i, "arrVal"));//add content, recursively parsed, updating i --tmpi; } return ret; } break; } #if DEBUG >= 2 fprintf(stderr, "Error: Unimplemented AMF type %hhx - returning.\n", data[i]); #endif return AMF::Object("error", AMF::AMF0_DDV_CONTAINER); }//parseOne /// Parses a C-string to a valid AMF::Object. /// This function will find all AMF objects in the string and return /// them all packed in a single AMF::AMF0_DDV_CONTAINER AMF::Object. AMF::Object AMF::parse(const unsigned char * data, unsigned int len){ AMF::Object ret("returned", AMF::AMF0_DDV_CONTAINER);//container type unsigned int i = 0, j = 0; while (i < len){ ret.addContent(AMF::parseOne(data, len, i, "")); if (i > j){j = i;}else{return ret;} } return ret; }//parse /// Parses a std::string to a valid AMF::Object. /// This function will find all AMF objects in the string and return /// them all packed in a single AMF::AMF0_DDV_CONTAINER AMF::Object. AMF::Object AMF::parse(std::string data){ return AMF::parse((const unsigned char*)data.c_str(), data.size()); }//parse /// Returns the std::string Indice for the current object, if available. /// Returns an empty string if no indice exists. std::string AMF::Object3::Indice(){return myIndice;}; /// Returns the AMF::obj0type AMF0 object type for this object. AMF::obj3type AMF::Object3::GetType(){return myType;}; /// Returns the double value of this object, if available. /// If this object holds no double value, 0 is returned. double AMF::Object3::DblValue(){return dblval;}; /// Returns the integer value of this object, if available. /// If this object holds no integer value, 0 is returned. int AMF::Object3::IntValue(){return intval;}; /// Returns the std::string value of this object, if available. /// If this object holds no string value, an empty string is returned. std::string AMF::Object3::StrValue(){return strval;}; /// Returns the C-string value of this object, if available. /// If this object holds no string value, an empty C-string is returned. const char * AMF::Object3::Str(){return strval.c_str();}; /// Returns a count of the amount of objects this object currently holds. /// If this object is not a container type, this function will always return 0. int AMF::Object3::hasContent(){return contents.size();}; /// Adds an AMF::Object to this object. Works for all types, but only makes sense for container types. void AMF::Object3::addContent(AMF::Object3 c){contents.push_back(c);}; /// Returns a pointer to the object held at indice i. /// Returns AMF::AMF3_DDV_CONTAINER of indice "error" if no object is held at this indice. /// \param i The indice of the object in this container. AMF::Object3* AMF::Object3::getContentP(int i){return &contents.at(i);}; /// Returns a copy of the object held at indice i. /// Returns a AMF::AMF3_DDV_CONTAINER of indice "error" if no object is held at this indice. /// \param i The indice of the object in this container. AMF::Object3 AMF::Object3::getContent(int i){return contents.at(i);}; /// Returns a pointer to the object held at indice s. /// Returns NULL if no object is held at this indice. /// \param s The indice of the object in this container. AMF::Object3* AMF::Object3::getContentP(std::string s){ for (std::vector::iterator it = contents.begin(); it != contents.end(); it++){ if (it->Indice() == s){return &(*it);} } return 0; }; /// Returns a copy of the object held at indice s. /// Returns a AMF::AMF0_DDV_CONTAINER of indice "error" if no object is held at this indice. /// \param s The indice of the object in this container. AMF::Object3 AMF::Object3::getContent(std::string s){ for (std::vector::iterator it = contents.begin(); it != contents.end(); it++){ if (it->Indice() == s){return *it;} } return AMF::Object3("error", AMF3_DDV_CONTAINER); }; /// Default constructor. /// Simply fills the data with AMF::Object3("error", AMF3_DDV_CONTAINER) AMF::Object3::Object3(){ *this = AMF::Object3("error", AMF3_DDV_CONTAINER); };//default constructor /// Constructor for double objects. /// The object type is by default AMF::AMF3_DOUBLE, but this can be forced to a different value. /// \param indice The string indice of this object in its container, or empty string if none. Numeric indices are automatic. /// \param val The numeric value of this object. Double AMF3 objects only support double-type values. /// \param setType The object type to force this object to. AMF::Object3::Object3(std::string indice, double val, AMF::obj3type setType){//num type initializer myIndice = indice; myType = setType; strval = ""; dblval = val; intval = 0; }; /// Constructor for integer objects. /// The object type is by default AMF::AMF3_INTEGER, but this can be forced to a different value. /// \param indice The string indice of this object in its container, or empty string if none. Numeric indices are automatic. /// \param val The numeric value of this object. Integer AMF3 objects only support integer-type values. /// \param setType The object type to force this object to. AMF::Object3::Object3(std::string indice, int val, AMF::obj3type setType){//num type initializer myIndice = indice; myType = setType; strval = ""; dblval = val; intval = 0; }; /// Constructor for string objects. /// The object type is by default AMF::AMF0_STRING, but this can be forced to a different value. /// There is no need to manually change the type to AMF::AMF0_LONGSTRING, this will be done automatically. /// \param indice The string indice of this object in its container, or empty string if none. Numeric indices are automatic. /// \param val The string value of this object. /// \param setType The object type to force this object to. AMF::Object3::Object3(std::string indice, std::string val, AMF::obj3type setType){//str type initializer myIndice = indice; myType = setType; strval = val; dblval = 0; intval = 0; }; /// Constructor for container objects. /// The object type is by default AMF::AMF0_OBJECT, but this can be forced to a different value. /// \param indice The string indice of this object in its container, or empty string if none. Numeric indices are automatic. /// \param setType The object type to force this object to. AMF::Object3::Object3(std::string indice, AMF::obj3type setType){//object type initializer myIndice = indice; myType = setType; strval = ""; dblval = 0; intval = 0; }; /// Prints the contents of this object to std::cerr. /// If this object contains other objects, it will call itself recursively /// and print all nested content in a nice human-readable format. void AMF::Object3::Print(std::string indent){ std::cerr << indent; // print my type switch (myType){ case AMF::AMF3_UNDEFINED: std::cerr << "Undefined"; break; case AMF::AMF3_NULL: std::cerr << "Null"; break; case AMF::AMF3_FALSE: std::cerr << "False"; break; case AMF::AMF3_TRUE: std::cerr << "True"; break; case AMF::AMF3_INTEGER: std::cerr << "Integer"; break; case AMF::AMF3_DOUBLE: std::cerr << "Double"; break; case AMF::AMF3_STRING: std::cerr << "String"; break; case AMF::AMF3_XMLDOC: std::cerr << "XML Doc"; break; case AMF::AMF3_DATE: std::cerr << "Date"; break; case AMF::AMF3_ARRAY: std::cerr << "Array"; break; case AMF::AMF3_OBJECT: std::cerr << "Object"; break; case AMF::AMF3_XML: std::cerr << "XML"; break; case AMF::AMF3_BYTES: std::cerr << "ByteArray"; break; case AMF::AMF3_DDV_CONTAINER: std::cerr << "DDVTech Container"; break; } // print my string indice, if available std::cerr << " " << myIndice << " "; // print my numeric or string contents switch (myType){ case AMF::AMF3_INTEGER: std::cerr << intval; break; case AMF::AMF3_DOUBLE: std::cerr << dblval; break; case AMF::AMF3_STRING: case AMF::AMF3_XMLDOC: case AMF::AMF3_XML: case AMF::AMF3_BYTES: if (intval > 0){ std::cerr << "REF" << intval; }else{ std::cerr << strval; } break; case AMF::AMF3_DATE: if (intval > 0){ std::cerr << "REF" << intval; }else{ std::cerr << dblval; } break; case AMF::AMF3_ARRAY: case AMF::AMF3_OBJECT: if (intval > 0){ std::cerr << "REF" << intval; } break; default: break;//we don't care about the rest, and don't want a compiler warning... } std::cerr << std::endl; // if I hold other objects, print those too, recursively. if (contents.size() > 0){ for (std::vector::iterator it = contents.begin(); it != contents.end(); it++){it->Print(indent+" ");} } };//print /// Packs the AMF object to a std::string for transfer over the network. /// If the object is a container type, this function will call itself recursively and contain all contents. /// Tip: When sending multiple AMF objects in one go, put them in a single AMF::AMF0_DDV_CONTAINER for easy transfer. std::string AMF::Object3::Pack(){ std::string r = ""; return r; };//pack /// Parses a single AMF3 type - used recursively by the AMF::parse3() functions. /// This function updates i every call with the new position in the data. /// \param data The raw data to parse. /// \param len The size of the raw data. /// \param i Current parsing position in the raw data. /// \param name Indice name for any new object created. /// \returns A single AMF::Object3, parsed from the raw data. AMF::Object3 AMF::parseOne3(const unsigned char *& data, unsigned int &len, unsigned int &i, std::string name){ std::string tmpstr; unsigned int tmpi = 0; unsigned int arrsize = 0; unsigned char tmpdbl[8]; #if DEBUG >= 10 fprintf(stderr, "Note: AMF3 type %hhx found. %i bytes left\n", data[i], len-i); #endif switch (data[i]){ case AMF::AMF3_UNDEFINED: case AMF::AMF3_NULL: case AMF::AMF3_FALSE: case AMF::AMF3_TRUE: ++i; return AMF::Object3(name, (AMF::obj3type)data[i-1]); break; case AMF::AMF3_INTEGER: if (data[i+1] < 0x80){ tmpi = data[i+1]; i+=2; }else{ tmpi = (data[i+1] & 0x7F) << 7;//strip the upper bit, shift 7 up. if (data[i+2] < 0x80){ tmpi |= data[i+2]; i+=3; }else{ tmpi = (tmpi | (data[i+2] & 0x7F)) << 7;//strip the upper bit, shift 7 up. if (data[i+3] < 0x80){ tmpi |= data[i+3]; i+=4; }else{ tmpi = (tmpi | (data[i+3] & 0x7F)) << 8;//strip the upper bit, shift 7 up. tmpi |= data[i+4]; i+=5; } } } tmpi = (tmpi << 3) >> 3;//fix sign bit return AMF::Object3(name, (int)tmpi, AMF::AMF3_INTEGER); break; case AMF::AMF3_DOUBLE: tmpdbl[7] = data[i+1]; tmpdbl[6] = data[i+2]; tmpdbl[5] = data[i+3]; tmpdbl[4] = data[i+4]; tmpdbl[3] = data[i+5]; tmpdbl[2] = data[i+6]; tmpdbl[1] = data[i+7]; tmpdbl[0] = data[i+8]; i+=9;//skip 8(a double)+1 forwards return AMF::Object3(name, *(double*)tmpdbl, AMF::AMF3_DOUBLE); break; case AMF::AMF3_STRING: if (data[i+1] < 0x80){ tmpi = data[i+1]; i+=2; }else{ tmpi = (data[i+1] & 0x7F) << 7;//strip the upper bit, shift 7 up. if (data[i+2] < 0x80){ tmpi |= data[i+2]; i+=3; }else{ tmpi = (tmpi | (data[i+2] & 0x7F)) << 7;//strip the upper bit, shift 7 up. if (data[i+3] < 0x80){ tmpi |= data[i+3]; i+=4; }else{ tmpi = (tmpi | (data[i+3] & 0x7F)) << 8;//strip the upper bit, shift 7 up. tmpi |= data[i+4]; i+=5; } } } tmpi = (tmpi << 3) >> 3;//fix sign bit if ((tmpi & 1) == 0){ return AMF::Object3(name, (int)((tmpi >> 1) + 1), AMF::AMF3_STRING);//reference type } tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char *)data+i, (size_t)(tmpi >> 1));//add the string data i += (tmpi >> 1);//skip length+size+1 forwards return AMF::Object3(name, tmpstr, AMF::AMF3_STRING);//normal type break; case AMF::AMF3_XMLDOC: if (data[i+1] < 0x80){ tmpi = data[i+1]; i+=2; }else{ tmpi = (data[i+1] & 0x7F) << 7;//strip the upper bit, shift 7 up. if (data[i+2] < 0x80){ tmpi |= data[i+2]; i+=3; }else{ tmpi = (tmpi | (data[i+2] & 0x7F)) << 7;//strip the upper bit, shift 7 up. if (data[i+3] < 0x80){ tmpi |= data[i+3]; i+=4; }else{ tmpi = (tmpi | (data[i+3] & 0x7F)) << 8;//strip the upper bit, shift 7 up. tmpi |= data[i+4]; i+=5; } } } tmpi = (tmpi << 3) >> 3;//fix sign bit if ((tmpi & 1) == 0){ return AMF::Object3(name, (int)((tmpi >> 1) + 1), AMF::AMF3_XMLDOC);//reference type } tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char *)data+i, (size_t)(tmpi >> 1));//add the string data i += (tmpi >> 1);//skip length+size+1 forwards return AMF::Object3(name, tmpstr, AMF::AMF3_XMLDOC);//normal type break; case AMF::AMF3_XML: if (data[i+1] < 0x80){ tmpi = data[i+1]; i+=2; }else{ tmpi = (data[i+1] & 0x7F) << 7;//strip the upper bit, shift 7 up. if (data[i+2] < 0x80){ tmpi |= data[i+2]; i+=3; }else{ tmpi = (tmpi | (data[i+2] & 0x7F)) << 7;//strip the upper bit, shift 7 up. if (data[i+3] < 0x80){ tmpi |= data[i+3]; i+=4; }else{ tmpi = (tmpi | (data[i+3] & 0x7F)) << 8;//strip the upper bit, shift 7 up. tmpi |= data[i+4]; i+=5; } } } tmpi = (tmpi << 3) >> 3;//fix sign bit if ((tmpi & 1) == 0){ return AMF::Object3(name, (int)((tmpi >> 1) + 1), AMF::AMF3_XML);//reference type } tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char *)data+i, (size_t)(tmpi >> 1));//add the string data i += (tmpi >> 1);//skip length+size+1 forwards return AMF::Object3(name, tmpstr, AMF::AMF3_XML);//normal type break; case AMF::AMF3_BYTES: if (data[i+1] < 0x80){ tmpi = data[i+1]; i+=2; }else{ tmpi = (data[i+1] & 0x7F) << 7;//strip the upper bit, shift 7 up. if (data[i+2] < 0x80){ tmpi |= data[i+2]; i+=3; }else{ tmpi = (tmpi | (data[i+2] & 0x7F)) << 7;//strip the upper bit, shift 7 up. if (data[i+3] < 0x80){ tmpi |= data[i+3]; i+=4; }else{ tmpi = (tmpi | (data[i+3] & 0x7F)) << 8;//strip the upper bit, shift 7 up. tmpi |= data[i+4]; tmpi = (tmpi << 3) >> 3;//fix sign bit i+=5; } } } if ((tmpi & 1) == 0){ return AMF::Object3(name, (int)((tmpi >> 1) + 1), AMF::AMF3_BYTES);//reference type } tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char *)data+i, (size_t)(tmpi >> 1));//add the string data i += (tmpi >> 1);//skip length+size+1 forwards return AMF::Object3(name, tmpstr, AMF::AMF3_BYTES);//normal type break; case AMF::AMF3_DATE: if (data[i+1] < 0x80){ tmpi = data[i+1]; i+=2; }else{ tmpi = (data[i+1] & 0x7F) << 7;//strip the upper bit, shift 7 up. if (data[i+2] < 0x80){ tmpi |= data[i+2]; i+=3; }else{ tmpi = (tmpi | (data[i+2] & 0x7F)) << 7;//strip the upper bit, shift 7 up. if (data[i+3] < 0x80){ tmpi |= data[i+3]; i+=4; }else{ tmpi = (tmpi | (data[i+3] & 0x7F)) << 8;//strip the upper bit, shift 7 up. tmpi |= data[i+4]; i+=5; } } } tmpi = (tmpi << 3) >> 3;//fix sign bit if ((tmpi & 1) == 0){ return AMF::Object3(name, (int)((tmpi >> 1) + 1), AMF::AMF3_DATE);//reference type } tmpdbl[7] = data[i]; tmpdbl[6] = data[i+1]; tmpdbl[5] = data[i+2]; tmpdbl[4] = data[i+3]; tmpdbl[3] = data[i+4]; tmpdbl[2] = data[i+5]; tmpdbl[1] = data[i+6]; tmpdbl[0] = data[i+7]; i += 8;//skip a double forwards return AMF::Object3(name, *(double*)tmpdbl, AMF::AMF3_DATE); break; case AMF::AMF3_ARRAY:{ if (data[i+1] < 0x80){ tmpi = data[i+1]; i+=2; }else{ tmpi = (data[i+1] & 0x7F) << 7;//strip the upper bit, shift 7 up. if (data[i+2] < 0x80){ tmpi |= data[i+2]; i+=3; }else{ tmpi = (tmpi | (data[i+2] & 0x7F)) << 7;//strip the upper bit, shift 7 up. if (data[i+3] < 0x80){ tmpi |= data[i+3]; i+=4; }else{ tmpi = (tmpi | (data[i+3] & 0x7F)) << 8;//strip the upper bit, shift 7 up. tmpi |= data[i+4]; i+=5; } } } tmpi = (tmpi << 3) >> 3;//fix sign bit if ((tmpi & 1) == 0){ return AMF::Object3(name, (int)((tmpi >> 1) + 1), AMF::AMF3_ARRAY);//reference type } AMF::Object3 ret(name, AMF::AMF3_ARRAY); arrsize = tmpi >> 1; do{ if (data[i+1] < 0x80){ tmpi = data[i+1]; i+=2; }else{ tmpi = (data[i+1] & 0x7F) << 7;//strip the upper bit, shift 7 up. if (data[i+2] < 0x80){ tmpi |= data[i+2]; i+=3; }else{ tmpi = (tmpi | (data[i+2] & 0x7F)) << 7;//strip the upper bit, shift 7 up. if (data[i+3] < 0x80){ tmpi |= data[i+3]; i+=4; }else{ tmpi = (tmpi | (data[i+3] & 0x7F)) << 8;//strip the upper bit, shift 7 up. tmpi |= data[i+4]; i+=5; } } } tmpi = (tmpi << 3) >> 4;//fix sign bit, ignore references for now... /// \todo Fix references? if (tmpi > 0){ tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char*)data+i, (size_t)tmpi);//add the string data ret.addContent(AMF::parseOne3(data, len, i, tmpstr));//add content, recursively parsed, updating i } }while(tmpi > 0); while (arrsize > 0){//while not done parsing array ret.addContent(AMF::parseOne3(data, len, i, "arrVal"));//add content, recursively parsed, updating i --arrsize; } return ret; } break; case AMF::AMF3_OBJECT:{ if (data[i+1] < 0x80){ tmpi = data[i+1]; i+=2; }else{ tmpi = (data[i+1] & 0x7F) << 7;//strip the upper bit, shift 7 up. if (data[i+2] < 0x80){ tmpi |= data[i+2]; i+=3; }else{ tmpi = (tmpi | (data[i+2] & 0x7F)) << 7;//strip the upper bit, shift 7 up. if (data[i+3] < 0x80){ tmpi |= data[i+3]; i+=4; }else{ tmpi = (tmpi | (data[i+3] & 0x7F)) << 8;//strip the upper bit, shift 7 up. tmpi |= data[i+4]; i+=5; } } } tmpi = (tmpi << 3) >> 3;//fix sign bit if ((tmpi & 1) == 0){ return AMF::Object3(name, (int)((tmpi >> 1) + 1), AMF::AMF3_OBJECT);//reference type } AMF::Object3 ret(name, AMF::AMF3_OBJECT); bool isdynamic = false; if ((tmpi & 2) == 0){//traits by reference, skip for now /// \todo Implement traits by reference. Or references in general, of course... }else{ isdynamic = ((tmpi & 8) == 8); arrsize = tmpi >> 4;//count of sealed members /// \todo Read in arrsize sealed member names, then arrsize sealed members. } if (isdynamic){ do{ if (data[i+1] < 0x80){ tmpi = data[i+1]; i+=2; }else{ tmpi = (data[i+1] & 0x7F) << 7;//strip the upper bit, shift 7 up. if (data[i+2] < 0x80){ tmpi |= data[i+2]; i+=3; }else{ tmpi = (tmpi | (data[i+2] & 0x7F)) << 7;//strip the upper bit, shift 7 up. if (data[i+3] < 0x80){ tmpi |= data[i+3]; i+=4; }else{ tmpi = (tmpi | (data[i+3] & 0x7F)) << 8;//strip the upper bit, shift 7 up. tmpi |= data[i+4]; i+=5; } } } tmpi = (tmpi << 3) >> 4;//fix sign bit, ignore references for now... /// \todo Fix references? if (tmpi > 0){ tmpstr.clear();//clean tmpstr, just to be sure tmpstr.append((const char*)data+i, (size_t)tmpi);//add the string data ret.addContent(AMF::parseOne3(data, len, i, tmpstr));//add content, recursively parsed, updating i } }while(tmpi > 0);//keep reading dynamic values until empty string }//dynamic types return ret; } break; } #if DEBUG >= 2 fprintf(stderr, "Error: Unimplemented AMF3 type %hhx - returning.\n", data[i]); #endif return AMF::Object3("error", AMF::AMF3_DDV_CONTAINER); }//parseOne /// Parses a C-string to a valid AMF::Object3. /// This function will find all AMF3 objects in the string and return /// them all packed in a single AMF::AMF3_DDV_CONTAINER AMF::Object3. AMF::Object3 AMF::parse3(const unsigned char * data, unsigned int len){ AMF::Object3 ret("returned", AMF::AMF3_DDV_CONTAINER);//container type unsigned int i = 0, j = 0; while (i < len){ ret.addContent(AMF::parseOne3(data, len, i, "")); if (i > j){j = i;}else{return ret;} } return ret; }//parse /// Parses a std::string to a valid AMF::Object3. /// This function will find all AMF3 objects in the string and return /// them all packed in a single AMF::AMF3_DDV_CONTAINER AMF::Object3. AMF::Object3 AMF::parse3(std::string data){ return AMF::parse3((const unsigned char*)data.c_str(), data.size()); }//parse