So I want to define a c++ string in ghidra struct. I noticed while reverse engineering a C++ binary, I found that, it defines a basic_string class in the symbol tree.
Now I want to define a std::string (not a pointer to it) within a struct. Is there a way to do it automatically right now, or will I still need to manually define a basic_string struct and go from there? Is there currently a way to associate classes and structs together like so (currently I think classes only act as namespaces?
I also tried just simply adding a field with the type basic_string in my struct, but it complains that basic_string is just a placeholder struct.
Haven't yet tested how ghidra would handle a std::string local variable.
EDIT: example code for what I described above:
#include <string>
#include <iostream>
struct Human {
int age;
bool is_male;
std::string name;
public:
Human(int age, bool is_male, const std::string &name) : age(age), is_male(is_male),
name(name) { }
void say_hello() {
std::cout << "Hello, I am a " << (is_male ? "male " : "female ") << age <<
"-year old named " << name << "!" << std::endl;
}
};
int main() {
Human *human = new Human(17, true, "Adam");
human->say_hello();
}
When you putting this into ghidra, and then do auto-fill struct fields, it will recognize the age and is_male fields, but not the name field, as this is an opaque std::string object.
Up to this point, when I was reversing another (much larger) binary, I simply manually created a new struct:
struct basic_string {
char *ptr;
size_t len;
char buff[0x10]
};
Is there something that ghidra can do this automatically? Also I'm wondering would there be any portability issues if I just always assume the above struct?
