emory/tools/stat.cpp

#include <sys/types.h>
#include <sys/acl.h>
#include "../acl.hpp"

#include <cruft/util/bitwise.hpp>
#include <cruft/util/posix/except.hpp>
#include <cruft/util/posix/util.hpp>
#include <cruft/util/posix/ostream.hpp>
#include <cruft/util/string.hpp>

#include <iostream>

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/xattr.h>
#include <unistd.h>

#include <cstdlib>


//-----------------------------------------------------------------------------
void do_xattr (char const *path)
{
    std::cout << ", xattr: ";

    {
        std::cout << "{ ";

        std::string attr_list (1024, '\0');
        {
            auto res = listxattr (path, attr_list.data (), attr_list.size ());
            if (res < 0)
                cruft::posix::error::throw_code ();
            attr_list.resize (res);
        }

        std::string keybuffer (64, '\0');
        std::string val (128, '\0');
        cruft::view<char const*> attr_view { attr_list.data (), attr_list.size () };
        for (auto const &key: cruft::tokeniser (attr_view, '\0')) {
            keybuffer.resize (0);
            std::copy (std::begin (key), std::end (key), std::back_inserter (keybuffer));

            while (true) {
                auto const res = getxattr (path, keybuffer.c_str (), val.data (), val.size ());
                if (res < 0 && errno == E2BIG) {
                    val = "___E2BIG";
                    break;
                }

                if (res < 0 && errno == ERANGE) {
                    val.resize (val.size () * 2);
                    continue;
                }

                if (res < 0)
                    cruft::posix::error::throw_code ();

                val.resize (res);
                break;
            }

            std::cout << keybuffer << ": " << val << ", ";
        }

        std::cout << "}";
    }
}


//-----------------------------------------------------------------------------
void do_acl (char const *path)
{
    std::cout << cruft::acl (path, ACL_TYPE_ACCESS) << '\n';
}


///////////////////////////////////////////////////////////////////////////////
int main (int argc, char **argv)
{
    if (argc < 2) {
        std::cerr << argv[0] << " <target> ...\n";
        return EXIT_FAILURE;
    }

    for (int i = 1; i < argc; ++i) {
        std::cout << "{ stat: ";

        char const *path = argv[i];
        std::cout << cruft::posix::stat (path);
        do_xattr (path);
        do_acl (path);

        std::cout << '\n';
    }
}