The host-side pass could not work for unprivileged GNS3 processes: the
.gns3_perms marker is created root-owned by the container-side touch, and
chowning root-owned files from the host requires root.
Rewrite VendorDockerVM._fix_permissions to run the busybox
record/chmod/chown script inside the container (as root) on the
/gns3volumes bind-mount targets — they exist for the container's whole
lifetime and do not depend on the mount --bind bridge, so a container
restart can no longer make the fix hit the overlay copy. A
stopped/exited container is skipped (logged) instead of restarted; the
next start's pass fixes ownership.
Replace the container-side _fix_permissions for vendor NOS containers with a
host-side pass that walks the node's project directories directly (they are
the Docker bind-mount sources): records mode:uid:gid into .gns3_perms and
chowns to the GNS3 user. No docker exec, no container restart — the base
implementation restarts an exited container just to chown, and after the
restart the mount --bind bridge is gone so it would fix the overlay copy
instead of the host files.
The pass runs at start (after _setup_skip_init_volumes seeds and bridges the
volumes) so the controller can read project files while the node runs, and
again at stop for files written during runtime.
Update docker-exec-console.md: VendorDockerVM architecture, hook points,
class-selection factory, volume-persistence lifecycle, and new
troubleshooting entries.
128 characters was far beyond any realistic marker label (icmp, arp, tcp-syn)
and would have collided with the pcap filename budget once a tag prefix is
added later. Cap the user-facing name at 32 in both MarkerCreate and
MarkerDefinitionCreate; the compute-side name guard now also rejects names
longer than 48, which covers the `global-{def_name}` inherited form (≤ 39).
A marker definition validated its BPF N times — once per link in the fan-out
(start_marker runs validate_bpf_syntax on every copy), spawning one tcpdump -d
subprocess per link for the same expression. Definitions did not validate BPF
at all; only direction was checked.
Move the single validation point to the definition layer (create/update), and
validate each definition's BPF on project load (dropping any that have gone
invalid, like private markers). The inherited fan-out (start_marker) and def
sync (update_marker) now skip validate_bpf_syntax for inherited copies, since
the BPF comes from an already-validated definition. Private per-link markers
still validate inline as before. uBridge still runs pcap_compile at install, so
an invalid expression can never slip through.
Creating a definition over N links now runs one tcpdump instead of N.
The 409 on a tx/rx definition now recommends encoding direction in the BPF
(e.g. icmp[icmptype]==8) as the primary fix, with per-link markers as the
single-link fallback. Doc updated: per-def rejects tx/rx (why + BPF), the
pause section no longer claims bpf changes reset+reapply (they rebuild one
filter), and a new Capture files section covers pcap cleanup + reset-preserves-mark.
The project-wide mute (POST /markers/pause|resume + _markers_paused) paused
every marker with one button. The actual need is per-rule control: pause one
definition and toggle only its inherited global-{name} copies across all links.
- Drop project-level: _markers_paused (init/asdict/load/start_all), the
pause_all/resume_all_markers methods, and the /markers/pause|resume routes.
- Add per-definition: a persisted `paused` flag on each definition;
pause/resume_marker_definition fan out update_marker(enabled) to every
global-{name} copy — instant, via the existing enable_packet_filter toggle
(no NIO rebuild, pcap/emitted preserved). New links inherit a paused
definition already off (inherit_marker passes enabled=not paused).
- start_marker takes an enabled kwarg; update_marker's enabled-only short-circuit
now also covers inherited copies so def pause/resume is instant.
- Routes: POST /marker-definitions/{name}/pause|resume.
- Docs + tests updated.
pause/resume was fire-and-forget: the controller sent marker pause/resume but
stored nothing, so the Web UI could only keep a local optimistic flag that was
lost on panel reopen. Treat the mute as a project-level config (like per-marker
enabled): record _markers_paused, persist it in the topology (asdict + load),
and echo it on the project object so the UI renders from server truth.
Because marker pause is a uBridge runtime flag that resets on node restart,
start_all re-applies the mute to freshly started uBridges after a project
reopen — a paused project stays paused across close/reopen.
A marker is single-sided — only the chosen capture node's uBridge installs the
mark filter — and dir=tx|rx is interpreted from that node's perspective. Until
now the observer was always auto-picked (_choose_marker_side), so dir=tx meant
"the auto-chosen endpoint is sending", which is unpredictable and makes the
direction filter hard to render meaningfully in the Web UI.
Add an optional create-only capture_node_id to MarkerCreate: when set, the
marker is pinned to that endpoint's uBridge (validated as a link endpoint and a
marker-capable type); when omitted, behavior is unchanged (auto-pick). The
chosen id is already echoed back as capture_node_id and in MARK signals, so the
UI can always render the observer regardless of who picked it.
capture_node_id is create-only (changing it would silently flip the meaning of
stored direction; recreate instead) and is not accepted on project-level
definitions — they are link-agnostic and have no endpoints, so inherited
markers keep auto-picking per link.
Plumbed through REST create_marker, the MCP link_marker tool, and base
Link.start_marker. update_marker does not forward it.
Direction field in marker.match events
=======================================
Read ubridge dir=<tx|rx> from MARK signal datagrams and forward it
as a "dir" key in the marker.match notification event. The field is
additive -- older ubridge builds omit it and the parser leaves it null,
so consumers fall back to undirected rendering with no version coupling.
Semantics are relative to the capture node (the signal's node=<id>):
tx = capture node is sending (ingressed device-side NIO), rx = it is
receiving (ingressed link-side NIO).
Per-marker direction filter (opt-in, server-side pipeline)
==========================================================
Add a direction field to MarkerCreate and MarkerDefinitionCreate
schemas ("tx" | "rx" | null). Plumb it through the full pipeline:
Schema -> controller (start_marker/update_marker, marker_entry,
_markers_for_node, update_marker_definition sync)
-> REST/MCP handlers -> compute _ubridge_add_marker_filter +
IOU _ubridge_apply_markers -> bridge add_packet_filter dir <tx|rx>
When set, ubridge only fires the mark handler (signal + pcap) for
packets matching the chosen direction. null (default/legacy) = both
directions -- zero behavioural change for existing markers.
Docs and tests
==============
- docs/features/marker-traffic-insight.md: signal format updated,
new Direction section with NIO mapping, arrow mapping, and additive
compatibility note.
- tests/compute/marker/test_marker_manager.py: 3 new parser tests
(dir tx/rx/absent) plus existing test extended to assert dir=None.
13 files, +123/-22, 72 tests pass (zero breakage)
For Docker nodes, reload bottoms out as a raw POST /containers/{id}/restart
to the Docker daemon, bypassing GNS3's start/stop lifecycle (uBridge
re-attach, console servers, NIC setup). The container restarts at the
Docker level but GNS3's plumbing goes out of sync, and the daemon call can
block up to the controller's 240s timeout — manifesting as "reload hangs /
no response". stop+start runs the full lifecycle and is reliable.
Remove the node_reload and node_reload_all MCP tools (tool functions,
handlers, NODE_TOOLS entry, tests, docs). The underlying REST endpoints
(POST /nodes/{id}/reload, POST /nodes/reload) are kept for native API
users. MCP callers should use node_stop + node_start (partial) or
close/open project (full restart) instead.
Add a Per-link attribution section (link field semantics, pcap path keyed on link) with an IOU subsection explaining the shared IOL-BRIDGE and per-port filter lists. Note that the marker.match link_id comes from the signal link= field, and call out shared capture-side node behavior in Notes.
Document the marker feature following the gns3-documentation standard:
overview, Mermaid architecture and business-process diagrams, API endpoint
tables, request/response and field reference, error responses, and notes
covering the key design points — immutable name (rename = delete + create),
global-prefix reservation, read-only inherited markers, render hints
(color / highlight_duration), supported node types, and persistence.
Indexed under Features in docs/README.md.
- Move fastmcp from core requirements.txt to mcp-requirements.txt
- Add MCP_AVAILABLE feature flag in agent/__init__.py (graceful degradation)
- Guard MCP imports/registration in server.py and tasks.py
- Replace ai-copilot/mcp/ai-support extras with single ai-features extra
- Add stub MCP routes returning 501 when MCP is not installed
- Add gns3server-uninstall-ai-features CLI command
- Remove old gns3server-uninstall-ai-copilot command
- Update all error messages and docs to reference ai-features
Closes#2794
The name device_command_run was ambiguous and easily confused with
device_config_send. device_show_run makes the read-only intent explicit,
forming a clear pair: config_send (write) vs show_run (read).
Add documentation explaining how _server_url() resolves the host
when Server.host is 0.0.0.0 or :: — using the default route
interface IP instead of hardcoding 127.0.0.1.
Added Transport Security section to MCP service documentation covering:
- Default behaviour (disabled, allow all hosts)
- How to enable protection via gns3_server.conf
- Protection mechanism (Host header validation)
- DNS rebinding attack prevention explanation
- Behaviour summary table
Update the default download repository address for GNS3 skills from
yueguobin/GNS3-Skills to gns3/gns3-skills to use the official
organization repository.
This affects:
- Default skills_repo_url in server configuration schema
- Skills manager default repository URL
- Skills configuration defaults
- All documentation references
Add future plan for ACE architecture refactoring to support:
- ACE name and description fields for better management
- Multiple paths and resource pools in a single ACE entry
- Solving ACE explosion problem (N groups × M pools)
- Updated permission checking logic for the new structure
Updated the roadmap document to reflect the implemented three-step
permission check logic in the feature/simple-user-isolation branch.
Added comprehensive design memory documenting:
- Core problem and design conflicts
- Three-step permission check implementation
- Key design decisions and advantages
- Use cases and scenarios
- Design evolution process
Roadmap for duplicating company network architecture into GNS3 and
building an automated pipeline to inject faults and validate AIOps
diagnosis, with traffic injection support for enhanced realism.
