feat(rawcli): identify + persistent connection (Phase 3)

- identify.py: probe HF (14a -> 15693) then LF; set session field /
  protocol / transponder. The 14a scan uses NO_DISCONNECT so the tag
  stays selected (the persistent connection). SAK -> coarse family name
  for the breadcrumb.
- session: add `protocol` (drives raw-exchange routing)
- app: connect via Proxmark3.sync() (scan/raw become plain calls); wire
  identify / transponder / close control commands; protocol-aware
  _raw_exchange; breadcrumb fills in field + transponder after identify

8 new tests (identify 14a/15693/none, clear, control commands). Device
probes are mocked; live identify is the user's hardware test.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

pm3py/cli/rawcli/app.py

@@ -12,35 +12,45 @@ import sys
 from .session import RawSession
 from .parser import parse_line
 from .entry import install_key_bindings
+from .identify import identify, clear, format_summary
 from .trace_view import render_exchange
 
 _HELP = """\
 rawcli — raw command interface
 
   help              show this help
+  identify          probe the field; sets HF/LF + transponder, keeps the connection
+  transponder       show the identified transponder
+  close             drop the tag connection
   quit | exit | q   leave rawcli
   <hex ...>         send raw bytes to the tag; the annotated exchange prints above
 
-Type hex as "30 04" or "3004". Entry-mode toggle (0x/0b), identify, and function-style
+Type hex as "30 04" or "3004"; Ctrl-/ toggles hex/binary entry (0x/0b). Function-style
-transponder commands (READ(4), GET_DATA) land in later phases."""
+transponder commands (READ(4), GET_DATA) land in the next phase."""
 
 
 def _connect(port):
     """Best-effort device connection; returns the client or None (offline)."""
     try:
         from pm3py import Proxmark3
-        return Proxmark3(port)
+        return Proxmark3.sync(port)          # sync proxy: scan()/raw() are plain calls
     except Exception as exc:  # no device / connect failure — run offline
         print(f"rawcli: no device ({type(exc).__name__}: {exc}); running offline", file=sys.stderr)
         return None
 
 
-def _raw_exchange(device, payload: bytes) -> bytes | None:
+def _raw_exchange(device, payload: bytes, protocol: str = "hf14a") -> bytes | None:
-    """Issue one raw 14a exchange, returning the response bytes (or None)."""
+    """Issue one raw exchange over the identified protocol, returning the response bytes."""
     if device is None:
         return None
     try:
-        resp = device.hf.iso14a.raw(payload)
+        if protocol == "hf14a":
+            resp = device.hf.iso14a.raw(payload)
+        elif protocol == "hf15":
+            raw = getattr(device.hf.iso15, "raw", None)
+            resp = raw(payload) if raw else None
+        else:
+            return None                      # lf raw exchange lands in a later phase
         return resp.get("data") if isinstance(resp, dict) else None
     except Exception as exc:
         print(f"rawcli: exchange failed ({type(exc).__name__}: {exc})", file=sys.stderr)
@@ -61,9 +71,13 @@ def dispatch(state: RawSession, line: str) -> bool:
             return False
         if cmd.name == "help":
             print(_HELP)
-        else:
+        elif cmd.name == "identify":
-            # identify / transponder / close land in Phase 3
+            print(format_summary(identify(state)))
-            print(f"rawcli: '{cmd.name}' is not wired yet (coming in a later phase)")
+        elif cmd.name == "transponder":
+            print(state.transponder or "no transponder identified — run 'identify'")
+        elif cmd.name == "close":
+            clear(state)
+            print("connection closed")
         return True
 
     if cmd.kind == "call":
@@ -74,8 +88,8 @@ def dispatch(state: RawSession, line: str) -> bool:
     # raw payload
     if not cmd.payload:
         return True
-    response = _raw_exchange(state.device, cmd.payload)
+    response = _raw_exchange(state.device, cmd.payload, protocol=state.protocol)
-    print(render_exchange(cmd.payload, response, protocol="hf14a",
+    print(render_exchange(cmd.payload, response, protocol=state.protocol,
                           is_tty=sys.stdout.isatty()))
     return True
 

pm3py/cli/rawcli/identify.py

@@ -0,0 +1,86 @@
+"""Tag identification for rawcli.
+
+``identify`` probes HF (ISO 14443-A, then 15693) and then LF, records the RF field, the wire
+protocol, and a display name on the session, and — because the 14a scan uses NO_DISCONNECT — the
+tag stays selected (the persistent connection). Device methods are called synchronously (the app
+connects via ``Proxmark3.sync()``).
+"""
+from __future__ import annotations
+
+from typing import Any
+
+# Coarse SAK → 14a family, for the breadcrumb name (GET_VERSION-level precision is a later add).
+_SAK_NAMES = {
+    0x00: "MIFARE UL/NTAG",
+    0x08: "MIFARE Classic 1K",
+    0x09: "MIFARE Mini",
+    0x18: "MIFARE Classic 4K",
+    0x10: "MIFARE Plus 2K",
+    0x11: "MIFARE Plus 4K",
+    0x20: "ISO14443-4",
+    0x28: "JCOP",
+}
+
+
+def name_14a(scan: dict) -> str:
+    sak = scan.get("sak")
+    if isinstance(sak, int):
+        return _SAK_NAMES.get(sak, f"ISO14443-A (SAK {sak:02X})")
+    return "ISO14443-A"
+
+
+def _try(fn, default):
+    try:
+        return fn()
+    except Exception:
+        return default
+
+
+def identify(session) -> dict:
+    """Probe the field and update ``session`` (field / protocol / transponder). Returns a
+    summary dict (``found`` + details)."""
+    dev = session.device
+    if dev is None:
+        return {"found": False, "error": "no device connected"}
+
+    scan = _try(lambda: dev.hf.iso14a.scan(), {"found": False})
+    if scan.get("found"):
+        session.field, session.protocol = "hf", "hf14a"
+        session.transponder = name_14a(scan)
+        return {"found": True, "field": "hf", "protocol": "14a",
+                "transponder": session.transponder, "uid": scan.get("uid"), "raw": scan}
+
+    scan15 = _try(lambda: dev.hf.iso15.scan(), {"found": False})
+    if scan15.get("found") or scan15.get("uid"):
+        session.field, session.protocol = "hf", "hf15"
+        session.transponder = "ISO15693"
+        return {"found": True, "field": "hf", "protocol": "15693",
+                "transponder": "ISO15693", "uid": scan15.get("uid"), "raw": scan15}
+
+    lf = _try(lambda: dev.lf.search(), None)
+    if lf:
+        session.field, session.protocol = "lf", "lf"
+        name = getattr(lf, "tag_type", None) or getattr(lf, "type", None) or "LF tag"
+        session.transponder = str(name)
+        return {"found": True, "field": "lf", "protocol": "lf",
+                "transponder": session.transponder, "raw": lf}
+
+    return {"found": False}
+
+
+def clear(session) -> None:
+    """Forget the identified tag (drop the logical connection); the device stays open."""
+    session.field = None
+    session.transponder = None
+    session.protocol = "hf14a"
+    dev = session.device
+    if dev is not None:
+        _try(lambda: dev.hf.dropfield(), None)
+
+
+def format_summary(result: dict) -> str:
+    if not result.get("found"):
+        return f"no tag found{': ' + result['error'] if result.get('error') else ''}"
+    uid = result.get("uid")
+    uid_hex = uid.hex().upper() if isinstance(uid, (bytes, bytearray)) else (uid or "?")
+    return f"{result['transponder']}  ({result['field'].upper()} / {result['protocol']})  UID {uid_hex}"

pm3py/cli/rawcli/session.py

@@ -21,6 +21,7 @@ class RawSession:
         self.device = device
         self.field: str | None = None
         self.transponder: str | None = None
+        self.protocol: str = "hf14a"      # wire protocol for raw exchanges (set by identify)
         self.entry_mode: str = HEX
         self.connected: bool = device is not None
 

tests/test_rawcli.py

@@ -1,6 +1,8 @@
 """rawcli Phase 1 — session state, breadcrumb, trace rendering, CLI dispatch. Hardware-free."""
 import re
 
+from unittest.mock import MagicMock
+
 import pytest
 
 from pm3py.cli.main import build_parser, main
@@ -8,6 +10,7 @@ from pm3py.cli.rawcli.session import RawSession
 from pm3py.cli.rawcli.trace_view import render_exchange
 from pm3py.cli.rawcli.parser import parse_token, parse_bytes, parse_line
 from pm3py.cli.rawcli.entry import byte_space
+from pm3py.cli.rawcli.identify import identify, clear, name_14a
 from pm3py.cli.rawcli.app import dispatch
 
 _ANSI = re.compile(r"\x1b\[[0-9;]*m")
@@ -138,3 +141,62 @@ class TestDispatch:
     def test_bad_hex_reports(self, capsys):
         assert dispatch(RawSession(), "0b0011") is True
         assert "whole number of bytes" in capsys.readouterr().out
+
+
+def _mock_device(scan14=None, scan15=None):
+    dev = MagicMock()
+    dev.hf.iso14a.scan.return_value = scan14 or {"found": False}
+    dev.hf.iso15.scan.return_value = scan15 or {"found": False}
+    dev.lf.search.return_value = None
+    return dev
+
+
+class TestIdentify:
+    def test_no_device(self):
+        s = RawSession()
+        r = identify(s)
+        assert r["found"] is False and s.field is None
+
+    def test_14a_sets_field_and_name(self):
+        s = RawSession(device=_mock_device(
+            scan14={"found": True, "sak": 0x08, "uid": b"\x01\x02\x03\x04"}))
+        r = identify(s)
+        assert r["found"] and s.field == "hf" and s.protocol == "hf14a"
+        assert s.transponder == "MIFARE Classic 1K"
+        assert r["uid"] == b"\x01\x02\x03\x04"
+
+    def test_15693_fallback(self):
+        s = RawSession(device=_mock_device(scan15={"found": True, "uid": b"\xE0\x04"}))
+        r = identify(s)
+        assert r["found"] and s.field == "hf" and s.protocol == "hf15"
+        assert s.transponder == "ISO15693"
+
+    def test_name_unknown_sak(self):
+        assert name_14a({"sak": 0x99}) == "ISO14443-A (SAK 99)"
+
+    def test_clear_forgets_tag(self):
+        s = RawSession(device=_mock_device(scan14={"found": True, "sak": 0x08}))
+        identify(s)
+        clear(s)
+        assert s.field is None and s.transponder is None and s.protocol == "hf14a"
+
+
+class TestControlCommands:
+    def test_identify_command(self, capsys):
+        s = RawSession(device=_mock_device(
+            scan14={"found": True, "sak": 0x00, "uid": b"\x04\x11\x22\x33"}))
+        dispatch(s, "identify")
+        out = capsys.readouterr().out
+        assert "MIFARE UL/NTAG" in out and "04112233" in out
+        assert s.breadcrumb() == "[raw / hf / MIFARE UL/NTAG / 0x]"
+
+    def test_transponder_when_none(self, capsys):
+        dispatch(RawSession(), "transponder")
+        assert "run 'identify'" in capsys.readouterr().out
+
+    def test_close(self, capsys):
+        s = RawSession(device=_mock_device(scan14={"found": True, "sak": 0x08}))
+        dispatch(s, "identify")
+        dispatch(s, "close")
+        assert "closed" in capsys.readouterr().out
+        assert s.transponder is None