403 lines
15 KiB
C++
403 lines
15 KiB
C++
#include <vector>
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#include <string.h>
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#include <string>
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#define AMF0_NUMBER 0x00
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#define AMF0_BOOL 0x01
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#define AMF0_STRING 0x02
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#define AMF0_OBJECT 0x03
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#define AMF0_MOVIECLIP 0x04
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#define AMF0_NULL 0x05
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#define AMF0_UNDEFINED 0x06
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#define AMF0_REFERENCE 0x07
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#define AMF0_ECMA_ARRAY 0x08
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#define AMF0_OBJ_END 0x09
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#define AMF0_STRICT_ARRAY 0x0A
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#define AMF0_DATE 0x0B
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#define AMF0_LONGSTRING 0x0C
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#define AMF0_UNSUPPORTED 0x0D
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#define AMF0_RECORDSET 0x0E
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#define AMF0_XMLDOC 0x0F
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#define AMF0_TYPED_OBJ 0x10
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#define AMF0_UPGRADE 0x11
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#define AMF0_DDV_CONTAINER 0xFF
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class AMFType {
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public:
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std::string Indice(){return myIndice;};
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unsigned char GetType(){return myType;};
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double NumValue(){return numval;};
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std::string StrValue(){return strval;};
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const char * Str(){return strval.c_str();};
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int hasContent(){
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if (!contents){return 0;}
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return contents->size();
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};
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void addContent(AMFType c){if (contents != 0){contents->push_back(c);}};
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AMFType* getContentP(int i){if (contents != 0){return &contents->at(i);}else{return 0;}};
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AMFType getContent(int i){if (contents != 0){return contents->at(i);}else{return AMFType("error");}};
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AMFType* getContentP(std::string s){
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if (contents != 0){
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for (std::vector<AMFType>::iterator it = contents->begin(); it != contents->end(); it++){
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if (it->Indice() == s){
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return &(*it);
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}
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}
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}
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return this;
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};
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AMFType getContent(std::string s){
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if (contents != 0){
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for (std::vector<AMFType>::iterator it = contents->begin(); it != contents->end(); it++){
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if (it->Indice() == s){
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return *it;
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}
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}
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}
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return AMFType("error");
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};
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AMFType(std::string indice, double val, unsigned char setType = AMF0_NUMBER){//num type initializer
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myIndice = indice;
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myType = setType;
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strval = "";
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numval = val;
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contents = 0;
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};
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AMFType(std::string indice, std::string val, unsigned char setType = AMF0_STRING){//str type initializer
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myIndice = indice;
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myType = setType;
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strval = val;
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numval = 0;
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contents = 0;
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};
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AMFType(std::string indice, unsigned char setType = AMF0_OBJECT){//object type initializer
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myIndice = indice;
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myType = setType;
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strval = "";
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numval = 0;
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contents = new std::vector<AMFType>;
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};
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~AMFType(){if (contents != 0){delete contents;contents=0;}};
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AMFType& operator=(const AMFType &a) {
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myIndice = a.myIndice;
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myType = a.myType;
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strval = a.strval;
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numval = a.numval;
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if (contents){
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if (a.contents != contents){
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delete contents;
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if (a.contents){
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contents = new std::vector<AMFType>;
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for (std::vector<AMFType>::iterator it = a.contents->begin(); it < a.contents->end(); it++){
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contents->push_back(*it);
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}
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}else{
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contents = 0;
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}
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}
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}else{
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if (a.contents){
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contents = new std::vector<AMFType>;
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for (std::vector<AMFType>::iterator it = a.contents->begin(); it < a.contents->end(); it++){
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contents->push_back(*it);
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}
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}
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}
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return *this;
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};//= operator
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AMFType(const AMFType &a){
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myIndice = a.myIndice;
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myType = a.myType;
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strval = a.strval;
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numval = a.numval;
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if (a.contents){
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contents = new std::vector<AMFType>;
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for (std::vector<AMFType>::iterator it = a.contents->begin(); it < a.contents->end(); it++){
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contents->push_back(*it);
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}
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}else{contents = 0;}
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};//copy constructor
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void Print(std::string indent = ""){
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std::cerr << indent;
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switch (myType){
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case AMF0_NUMBER: std::cerr << "Number"; break;
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case AMF0_BOOL: std::cerr << "Bool"; break;
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case AMF0_STRING://short string
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case AMF0_LONGSTRING: std::cerr << "String"; break;
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case AMF0_OBJECT: std::cerr << "Object"; break;
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case AMF0_MOVIECLIP: std::cerr << "MovieClip"; break;
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case AMF0_NULL: std::cerr << "Null"; break;
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case AMF0_UNDEFINED: std::cerr << "Undefined"; break;
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case AMF0_REFERENCE: std::cerr << "Reference"; break;
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case AMF0_ECMA_ARRAY: std::cerr << "ECMA Array"; break;
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case AMF0_OBJ_END: std::cerr << "Object end"; break;
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case AMF0_STRICT_ARRAY: std::cerr << "Strict Array"; break;
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case AMF0_DATE: std::cerr << "Date"; break;
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case AMF0_UNSUPPORTED: std::cerr << "Unsupported"; break;
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case AMF0_RECORDSET: std::cerr << "Recordset"; break;
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case AMF0_XMLDOC: std::cerr << "XML Document"; break;
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case AMF0_TYPED_OBJ: std::cerr << "Typed Object"; break;
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case AMF0_UPGRADE: std::cerr << "Upgrade to AMF3"; break;
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case AMF0_DDV_CONTAINER: std::cerr << "DDVTech Container"; break;
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}
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std::cerr << " " << myIndice << " ";
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switch (myType){
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case AMF0_NUMBER: case AMF0_BOOL: case AMF0_REFERENCE: case AMF0_DATE: std::cerr << numval; break;
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case AMF0_STRING: case AMF0_LONGSTRING: case AMF0_XMLDOC: case AMF0_TYPED_OBJ: std::cerr << strval; break;
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}
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std::cerr << std::endl;
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if (contents){
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for (std::vector<AMFType>::iterator it = contents->begin(); it != contents->end(); it++){it->Print(indent+" ");}
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}
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};//print
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std::string Pack(){
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std::string r = "";
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if ((myType == AMF0_STRING) && (strval.size() > 0xFFFF)){myType = AMF0_LONGSTRING;}
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if (myType != AMF0_DDV_CONTAINER){r += myType;}
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switch (myType){
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case AMF0_NUMBER:
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r += *(((char*)&numval)+7); r += *(((char*)&numval)+6);
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r += *(((char*)&numval)+5); r += *(((char*)&numval)+4);
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r += *(((char*)&numval)+3); r += *(((char*)&numval)+2);
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r += *(((char*)&numval)+1); r += *(((char*)&numval));
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break;
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case AMF0_DATE:
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r += *(((char*)&numval)+7); r += *(((char*)&numval)+6);
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r += *(((char*)&numval)+5); r += *(((char*)&numval)+4);
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r += *(((char*)&numval)+3); r += *(((char*)&numval)+2);
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r += *(((char*)&numval)+1); r += *(((char*)&numval));
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r += (char)0;//timezone always 0
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r += (char)0;//timezone always 0
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break;
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case AMF0_BOOL:
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r += (char)numval;
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break;
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case AMF0_STRING:
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r += strval.size() / 256;
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r += strval.size() % 256;
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r += strval;
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break;
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case AMF0_LONGSTRING:
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case AMF0_XMLDOC://is always a longstring
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r += strval.size() / (256*256*256);
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r += strval.size() / (256*256);
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r += strval.size() / 256;
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r += strval.size() % 256;
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r += strval;
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break;
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case AMF0_TYPED_OBJ:
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r += Indice().size() / 256;
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r += Indice().size() % 256;
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r += Indice();
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//is an object, with the classname first
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case AMF0_OBJECT:
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if (contents){
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for (std::vector<AMFType>::iterator it = contents->begin(); it != contents->end(); it++){
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r += it->Indice().size() / 256;
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r += it->Indice().size() % 256;
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r += it->Indice();
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r += it->Pack();
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}
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}
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r += (char)0; r += (char)0; r += (char)9;
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break;
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case AMF0_MOVIECLIP:
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case AMF0_NULL:
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case AMF0_UNDEFINED:
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case AMF0_RECORDSET:
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case AMF0_UNSUPPORTED:
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//no data to add
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break;
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case AMF0_REFERENCE:
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r += (char)((int)numval / 256);
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r += (char)((int)numval % 256);
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break;
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case AMF0_ECMA_ARRAY:{
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int arrlen = 0;
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if (contents){
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arrlen = contents->size();
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r += arrlen / (256*256*256); r += arrlen / (256*256); r += arrlen / 256; r += arrlen % 256;
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for (std::vector<AMFType>::iterator it = contents->begin(); it != contents->end(); it++){
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r += it->Indice().size() / 256;
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r += it->Indice().size() % 256;
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r += it->Indice();
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r += it->Pack();
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}
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}else{
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r += (char)0; r += (char)0; r += (char)0; r += (char)0;
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}
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r += (char)0; r += (char)0; r += (char)9;
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} break;
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case AMF0_STRICT_ARRAY:{
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int arrlen = 0;
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if (contents){
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arrlen = contents->size();
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r += arrlen / (256*256*256); r += arrlen / (256*256); r += arrlen / 256; r += arrlen % 256;
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for (std::vector<AMFType>::iterator it = contents->begin(); it != contents->end(); it++){
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r += it->Pack();
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}
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}else{
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r += (char)0; r += (char)0; r += (char)0; r += (char)0;
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}
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} break;
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case AMF0_DDV_CONTAINER://only send contents
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if (contents){
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for (std::vector<AMFType>::iterator it = contents->begin(); it != contents->end(); it++){
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r += it->Pack();
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}
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}
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break;
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}
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return r;
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};//pack
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protected:
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std::string myIndice;
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unsigned char myType;
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std::string strval;
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double numval;
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std::vector<AMFType> * contents;
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};//AMFType
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AMFType parseOneAMF(const unsigned char *& data, unsigned int &len, unsigned int &i, std::string name){
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std::string tmpstr;
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unsigned int tmpi = 0;
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unsigned char tmpdbl[8];
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#if DEBUG >= 10
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fprintf(stderr, "Note: AMF type %hhx found. %i bytes left\n", data[i], len-i);
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#endif
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switch (data[i]){
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case AMF0_NUMBER:
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tmpdbl[7] = data[i+1];
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tmpdbl[6] = data[i+2];
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tmpdbl[5] = data[i+3];
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tmpdbl[4] = data[i+4];
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tmpdbl[3] = data[i+5];
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tmpdbl[2] = data[i+6];
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tmpdbl[1] = data[i+7];
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tmpdbl[0] = data[i+8];
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i+=9;//skip 8(a double)+1 forwards
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return AMFType(name, *(double*)tmpdbl, AMF0_NUMBER);
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break;
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case AMF0_DATE:
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tmpdbl[7] = data[i+1];
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tmpdbl[6] = data[i+2];
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tmpdbl[5] = data[i+3];
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tmpdbl[4] = data[i+4];
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tmpdbl[3] = data[i+5];
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tmpdbl[2] = data[i+6];
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tmpdbl[1] = data[i+7];
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tmpdbl[0] = data[i+8];
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i+=11;//skip 8(a double)+1+timezone(2) forwards
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return AMFType(name, *(double*)tmpdbl, AMF0_DATE);
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break;
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case AMF0_BOOL:
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i+=2;//skip bool+1 forwards
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if (data[i-1] == 0){
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return AMFType(name, (double)0, AMF0_BOOL);
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}else{
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return AMFType(name, (double)1, AMF0_BOOL);
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}
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break;
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case AMF0_REFERENCE:
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tmpi = data[i+1]*256+data[i+2];//get the ref number value as a double
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i+=3;//skip ref+1 forwards
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return AMFType(name, (double)tmpi, AMF0_REFERENCE);
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break;
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case AMF0_XMLDOC:
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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
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tmpstr.clear();//clean tmpstr, just to be sure
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tmpstr.append((const char *)data+i+5, (size_t)tmpi);//add the string data
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i += tmpi + 5;//skip length+size+1 forwards
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return AMFType(name, tmpstr, AMF0_XMLDOC);
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break;
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case AMF0_LONGSTRING:
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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
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tmpstr.clear();//clean tmpstr, just to be sure
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tmpstr.append((const char *)data+i+5, (size_t)tmpi);//add the string data
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i += tmpi + 5;//skip length+size+1 forwards
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return AMFType(name, tmpstr, AMF0_LONGSTRING);
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break;
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case AMF0_STRING:
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tmpi = data[i+1]*256+data[i+2];//set tmpi to UTF-8 length
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tmpstr.clear();//clean tmpstr, just to be sure
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tmpstr.append((const char *)data+i+3, (size_t)tmpi);//add the string data
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i += tmpi + 3;//skip length+size+1 forwards
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return AMFType(name, tmpstr, AMF0_STRING);
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break;
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case AMF0_NULL:
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case AMF0_UNDEFINED:
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case AMF0_UNSUPPORTED:
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++i;
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return AMFType(name, (double)0, data[i-1]);
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break;
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case AMF0_OBJECT:{
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++i;
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AMFType ret = AMFType(name, (unsigned char)AMF0_OBJECT);
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while (data[i] + data[i+1] != 0){//while not encountering 0x0000 (we assume 0x000009)
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tmpi = data[i]*256+data[i+1];//set tmpi to the UTF-8 length
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tmpstr.clear();//clean tmpstr, just to be sure
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tmpstr.append((const char*)data+i+2, (size_t)tmpi);//add the string data
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i += tmpi + 2;//skip length+size forwards
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ret.addContent(parseOneAMF(data, len, i, tmpstr));//add content, recursively parsed, updating i, setting indice to tmpstr
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}
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i += 3;//skip 0x000009
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return ret;
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} break;
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case AMF0_TYPED_OBJ:{
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++i;
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tmpi = data[i]*256+data[i+1];//set tmpi to the UTF-8 length
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tmpstr.clear();//clean tmpstr, just to be sure
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tmpstr.append((const char*)data+i+2, (size_t)tmpi);//add the string data
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AMFType ret = AMFType(tmpstr, (unsigned char)AMF0_TYPED_OBJ);//the object is not named "name" but tmpstr
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while (data[i] + data[i+1] != 0){//while not encountering 0x0000 (we assume 0x000009)
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tmpi = data[i]*256+data[i+1];//set tmpi to the UTF-8 length
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tmpstr.clear();//clean tmpstr, just to be sure
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tmpstr.append((const char*)data+i+2, (size_t)tmpi);//add the string data
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i += tmpi + 2;//skip length+size forwards
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ret.addContent(parseOneAMF(data, len, i, tmpstr));//add content, recursively parsed, updating i, setting indice to tmpstr
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}
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i += 3;//skip 0x000009
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return ret;
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} break;
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case AMF0_ECMA_ARRAY:{
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++i;
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AMFType ret = AMFType(name, (unsigned char)AMF0_ECMA_ARRAY);
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i += 4;//ignore the array length, we re-calculate it
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while (data[i] + data[i+1] != 0){//while not encountering 0x0000 (we assume 0x000009)
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tmpi = data[i]*256+data[i+1];//set tmpi to the UTF-8 length
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tmpstr.clear();//clean tmpstr, just to be sure
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tmpstr.append((const char*)data+i+2, (size_t)tmpi);//add the string data
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i += tmpi + 2;//skip length+size forwards
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ret.addContent(parseOneAMF(data, len, i, tmpstr));//add content, recursively parsed, updating i, setting indice to tmpstr
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}
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i += 3;//skip 0x000009
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return ret;
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} break;
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case AMF0_STRICT_ARRAY:{
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AMFType ret = AMFType(name, (unsigned char)AMF0_STRICT_ARRAY);
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tmpi = data[i+1]*256*256*256+data[i+2]*256*256+data[i+3]*256+data[i+4];//set tmpi to array length
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i += 5;//skip size+1 forwards
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while (tmpi > 0){//while not done parsing array
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ret.addContent(parseOneAMF(data, len, i, "arrVal"));//add content, recursively parsed, updating i
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--tmpi;
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}
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return ret;
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} break;
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}
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#if DEBUG >= 2
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fprintf(stderr, "Error: Unimplemented AMF type %hhx - returning.\n", data[i]);
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#endif
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return AMFType("error", (unsigned char)0xFF);
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}//parseOneAMF
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AMFType parseAMF(const unsigned char * data, unsigned int len){
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AMFType ret("returned", (unsigned char)0xFF);//container type
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unsigned int i = 0, j = 0;
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while (i < len){
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ret.addContent(parseOneAMF(data, len, i, ""));
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if (i > j){j = i;}else{return ret;}
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}
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return ret;
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}//parseAMF
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AMFType parseAMF(std::string data){return parseAMF((const unsigned char*)data.c_str(), data.size());}
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