Function attach_to_pid

src/debugpy/server/cli.py:413–510

()

def attach_to_pid():
    pid = options.target
    log.info("Attaching to process with PID={0}", pid)

    encode = lambda s: list(bytearray(s.encode("utf-8"))) if s is not None else None

    script_dir = os.path.dirname(debugpy.server.__file__)
    assert os.path.exists(script_dir)
    script_dir = encode(script_dir)

    setup = {
        "mode": options.mode,
        "address": options.address,
        "wait_for_client": options.wait_for_client,
        "log_to": options.log_to,
        "adapter_access_token": options.adapter_access_token,
    }
    setup = encode(json.dumps(setup))

    python_code = """
import codecs;
import json;
import sys;

decode = lambda s: codecs.utf_8_decode(bytearray(s))[0] if s is not None else None;

script_dir = decode({script_dir});
setup = json.loads(decode({setup}));

sys.path.insert(0, script_dir);
import attach_pid_injected;
del sys.path[0];

attach_pid_injected.attach(setup);
"""
    python_code = (
        python_code.replace("\r", "")
        .replace("\n", "")
        .format(script_dir=script_dir, setup=setup)
    )

    # attempt pep 768 style code injection
    if (not options.disable_sys_remote_exec) and hasattr(sys, "remote_exec"):
        tmp_file_path = ""
        try:
            import tempfile

            with tempfile.NamedTemporaryFile(delete=False) as tmp_file:
                tmp_file_path = tmp_file.name
                log.info(
                    "Attempting to inject code at '{tmp_file_path}' using sys.remote_exec()",
                    tmp_file_path=tmp_file_path,
                )
                tmp_file.write(python_code.encode())
                tmp_file.write(
                    """import os;os.remove("{tmp_file_path}");""".format(
                        tmp_file_path=tmp_file_path
                    ).encode()