Add wimtools and startnet.cmd editor for boot.wim modification

- Added wimtools to offline packages and playbook verification
- Webapp startnet.cmd editor: extract, view, edit, save back to boot.wim
- Uses wimextract/wimupdate for in-place WIM modification
- Dark-themed code editor with tab support and common command reference

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

webapp/app.py

@@ -29,6 +29,8 @@ app.config["MAX_CONTENT_LENGTH"] = 16 * 1024 * 1024 * 1024  # 16 GB max upload
 # ---------------------------------------------------------------------------
 SAMBA_SHARE = os.environ.get("SAMBA_SHARE", "/srv/samba/winpeapps")
 CLONEZILLA_SHARE = os.environ.get("CLONEZILLA_SHARE", "/srv/samba/clonezilla")
+WEB_ROOT = os.environ.get("WEB_ROOT", "/var/www/html")
+BOOT_WIM = os.path.join(WEB_ROOT, "win11", "sources", "boot.wim")
 
 IMAGE_TYPES = [
     "gea-standard",
@@ -638,6 +640,118 @@ def clonezilla_delete(filename):
     return redirect(url_for("clonezilla_backups"))
 
 
+# ---------------------------------------------------------------------------
+# Routes — startnet.cmd Editor (WIM)
+# ---------------------------------------------------------------------------
+
+def _wim_extract_startnet(wim_path):
+    """Extract startnet.cmd from a WIM file using wimextract."""
+    import tempfile
+    tmpdir = tempfile.mkdtemp()
+    try:
+        result = subprocess.run(
+            ["wimextract", wim_path, "1",
+             "/Windows/System32/startnet.cmd",
+             "--dest-dir", tmpdir],
+            capture_output=True, text=True, timeout=30,
+        )
+        startnet_path = os.path.join(tmpdir, "startnet.cmd")
+        if result.returncode == 0 and os.path.isfile(startnet_path):
+            content = open(startnet_path, "r", encoding="utf-8", errors="replace").read()
+            return content
+        return None
+    except Exception:
+        return None
+    finally:
+        shutil.rmtree(tmpdir, ignore_errors=True)
+
+
+def _wim_update_startnet(wim_path, content):
+    """Update startnet.cmd inside a WIM file using wimupdate."""
+    import tempfile
+    tmpdir = tempfile.mkdtemp()
+    try:
+        startnet_path = os.path.join(tmpdir, "startnet.cmd")
+        with open(startnet_path, "w", encoding="utf-8", newline="\r\n") as fh:
+            fh.write(content)
+        # wimupdate reads commands from stdin
+        update_cmd = f"add {startnet_path} /Windows/System32/startnet.cmd\n"
+        result = subprocess.run(
+            ["wimupdate", wim_path, "1"],
+            input=update_cmd,
+            capture_output=True, text=True, timeout=60,
+        )
+        if result.returncode != 0:
+            return False, result.stderr.strip()
+        return True, ""
+    except Exception as exc:
+        return False, str(exc)
+    finally:
+        shutil.rmtree(tmpdir, ignore_errors=True)
+
+
+def _wim_list_files(wim_path, path="/"):
+    """List files inside a WIM at the given path."""
+    try:
+        result = subprocess.run(
+            ["wimdir", wim_path, "1", path],
+            capture_output=True, text=True, timeout=30,
+        )
+        if result.returncode == 0:
+            return [l.strip() for l in result.stdout.splitlines() if l.strip()]
+        return []
+    except Exception:
+        return []
+
+
+@app.route("/startnet")
+def startnet_editor():
+    wim_exists = os.path.isfile(BOOT_WIM)
+    content = ""
+    wim_info = {}
+
+    if wim_exists:
+        content = _wim_extract_startnet(BOOT_WIM) or ""
+        # Get WIM info
+        try:
+            result = subprocess.run(
+                ["wiminfo", BOOT_WIM],
+                capture_output=True, text=True, timeout=15,
+            )
+            if result.returncode == 0:
+                for line in result.stdout.splitlines():
+                    if ":" in line:
+                        key, _, val = line.partition(":")
+                        wim_info[key.strip()] = val.strip()
+        except Exception:
+            pass
+
+    return render_template(
+        "startnet_editor.html",
+        wim_exists=wim_exists,
+        wim_path=BOOT_WIM,
+        content=content,
+        wim_info=wim_info,
+        image_types=IMAGE_TYPES,
+        friendly_names=FRIENDLY_NAMES,
+    )
+
+
+@app.route("/startnet/save", methods=["POST"])
+def startnet_save():
+    if not os.path.isfile(BOOT_WIM):
+        flash("boot.wim not found.", "danger")
+        return redirect(url_for("startnet_editor"))
+
+    content = request.form.get("content", "")
+    ok, err = _wim_update_startnet(BOOT_WIM, content)
+    if ok:
+        flash("startnet.cmd updated successfully in boot.wim.", "success")
+    else:
+        flash(f"Failed to update boot.wim: {err}", "danger")
+    return redirect(url_for("startnet_editor"))
+
+
 # ---------------------------------------------------------------------------
 # Routes — API
 # ---------------------------------------------------------------------------