Flask app progress

docker/router-dash/app/action_apply_inter_vlan.py

@@ -0,0 +1,167 @@
+from flask import Blueprint, request, redirect, flash
+from auth import require_level
+from config_utils import load_core, save_core, verify_core_hash, apply_msg
+import sanitize
+import validate
+
+bp = Blueprint('action_apply_inter_vlan', __name__)
+
+VIEW   = '/view/view_inter_vlan'
+
+_VALID_PROTOS_STR = ', '.join(sorted(validate.VALID_PROTOCOLS))
+
+
+def _row_index():
+    try:
+        return int(request.form.get('row_index', ''))
+    except (ValueError, TypeError):
+        return None
+
+
+def _hash_ok():
+    if not verify_core_hash(request.form.get('config_hash', '')):
+        flash('Configuration was modified by another session. Please refresh and try again.', 'error')
+        return False
+    return True
+
+
+def _parse_entry():
+    """Parse and validate form fields. Returns (entry_dict, None) or (None, already_flashed)."""
+    description  = sanitize.text(request.form.get('description', ''))
+    protocol     = request.form.get('protocol', '').strip()
+    src_raw      = request.form.get('src_ip_or_subnet', '').strip()
+    dst_raw      = request.form.get('dst_ip_or_subnet', '').strip()
+    dst_port_raw = request.form.get('dst_port', '').strip()
+
+    if protocol not in validate.VALID_PROTOCOLS:
+        flash(f'The configuration has not been saved because "{protocol}" is not a valid protocol. '
+              f'Accepted values: {_VALID_PROTOS_STR}.', 'error')
+        return None, True
+
+    if not src_raw:
+        flash('The configuration has not been saved because a source IP or subnet is required.', 'error')
+        return None, True
+    src = validate.ip_or_cidr(src_raw)
+    if not src:
+        flash(f'The configuration has not been saved because "{src_raw}" is not a valid IP address or subnet.', 'error')
+        return None, True
+
+    if not dst_raw:
+        flash('The configuration has not been saved because a destination IP or subnet is required.', 'error')
+        return None, True
+    dst = validate.ip_or_cidr(dst_raw)
+    if not dst:
+        flash(f'The configuration has not been saved because "{dst_raw}" is not a valid IP address or subnet.', 'error')
+        return None, True
+
+    dst_port = ''
+    if dst_port_raw:
+        dst_port = validate.port(dst_port_raw)
+        if not dst_port:
+            flash(f'The configuration has not been saved because "{dst_port_raw}" is not a valid port number (1-65535).', 'error')
+            return None, True
+
+    return {
+        'description':      description,
+        'protocol':         protocol,
+        'src_ip_or_subnet': src,
+        'dst_ip_or_subnet': dst,
+        'dst_port':         dst_port,
+        'enabled':          True,
+    }, None
+
+
+@bp.route('/action/add_inter_vlan', methods=['POST'])
+@require_level('administrator')
+def add_inter_vlan():
+    entry, err = _parse_entry()
+    if err:
+        return redirect(VIEW)
+
+    if not _hash_ok():
+        return redirect(VIEW)
+
+    core = load_core()
+    core.setdefault('inter_vlan_exceptions', []).append(entry)
+    save_core(core)
+
+    flash(apply_msg(), 'success')
+    return redirect(VIEW)
+
+
+@bp.route('/action/toggle_inter_vlan', methods=['POST'])
+@require_level('administrator')
+def toggle_inter_vlan():
+    idx = _row_index()
+    if idx is None:
+        flash('Invalid request.', 'error')
+        return redirect(VIEW)
+
+    if not _hash_ok():
+        return redirect(VIEW)
+
+    core  = load_core()
+    items = core.get('inter_vlan_exceptions', [])
+    if idx < 0 or idx >= len(items):
+        flash('Entry not found.', 'error')
+        return redirect(VIEW)
+
+    items[idx]['enabled'] = not items[idx].get('enabled', True)
+    save_core(core)
+
+    flash(apply_msg(), 'success')
+    return redirect(VIEW)
+
+
+@bp.route('/action/edit_inter_vlan', methods=['POST'])
+@require_level('administrator')
+def edit_inter_vlan():
+    idx = _row_index()
+    if idx is None:
+        flash('Invalid request.', 'error')
+        return redirect(VIEW)
+
+    entry, err = _parse_entry()
+    if err:
+        return redirect(VIEW)
+
+    if not _hash_ok():
+        return redirect(VIEW)
+
+    core  = load_core()
+    items = core.get('inter_vlan_exceptions', [])
+    if idx < 0 or idx >= len(items):
+        flash('Entry not found.', 'error')
+        return redirect(VIEW)
+
+    enabled = items[idx].get('enabled', True)
+    items[idx] = entry
+    items[idx]['enabled'] = enabled
+    save_core(core)
+
+    flash(apply_msg(), 'success')
+    return redirect(VIEW)
+
+
+@bp.route('/action/delete_inter_vlan', methods=['POST'])
+@require_level('administrator')
+def delete_inter_vlan():
+    idx = _row_index()
+    if idx is None:
+        flash('Invalid request.', 'error')
+        return redirect(VIEW)
+
+    if not _hash_ok():
+        return redirect(VIEW)
+
+    core  = load_core()
+    items = core.get('inter_vlan_exceptions', [])
+    if idx < 0 or idx >= len(items):
+        flash('Entry not found.', 'error')
+        return redirect(VIEW)
+
+    items.pop(idx)
+    save_core(core)
+
+    flash(apply_msg(), 'success')
+    return redirect(VIEW)