Files
OpenShell/snapcraft.yaml
Oliver Calder 1ad4e428a6 fix(snap): simplify snap hooks (#3988)
* fix(snap): simplify snap hooks

The `post-refresh` hook runs after initial snap installation as well, so
there is no need to call the `install` hook from within the
`post-refresh` hook; instead, the logic can simply be moved into the
`post-refresh` hook directly, and the `install` hook removed.

Also, the existing `install` hook logic looked for an insecure
configuration, and if found, replaced the entire configuration file with
a minimal default in the current format. But OpenShell does that default
behavior without any config file, so we may as well simply remove the
configuration file entirely to keep up-to-date with the current default
behavior. Let OpenShell create a configuration file if it needs to,
rather than auto-create one via the packaging scripts.

Signed-off-by: Oliver Calder <oliver.calder@canonical.com>

* fix(snap): remove the connect-plug-docker hook

The `openshell:docker` is auto-connected to the system `:docker` slot,
so there should not be a need to separately restart the gateway service
when the interface is connected.

For locally-built test snaps which were not published to the store, the
autoconnection is not made, but when the snap is installed, the gateway
will attempt to start anyway and fail to find any available compute
driver, so quickly restart until it hits the systemd start-limit, after
which systemd prevents the service from being started again. If a user
tries to manually connect their locally-built `openshell` snap to the
`:docker` slot, then the `connect-plug-docker` hook runs and triggers a
restart of the gateway, which will usually fail because the start limit
has already been hit. An error in the hook will thus cause the interface
connection to be undone, which is undesirable.

Thus, we can remove this hook entirely, and instead allow interface
connections to succeed as intended. The user still needs to manually
restart the gateway service after making a manual connection (as was the
case previously) and probably needs to `systemctl reset-failed` first,
but at least connection will succeed beforehand so they can proceed with
these steps.

Signed-off-by: Oliver Calder <oliver.calder@canonical.com>

* fix(snap): set refresh-mode: endure again, with manual restart

Return to the previous behavior before commit a67567e58, where the
gateway is not stopped before refreshes. The `post-refresh` hook
now restarts the gateway if the TLS configuration was corrected, so we
don't have to enforce restarting the gateway on every refresh even when
not necessary. Thus, set `refresh-mode: endure`, and let the hook decide
when the gateway needs to be restarted.

Signed-off-by: Oliver Calder <oliver.calder@canonical.com>

* fix(snap): update docs and tests to reflect snap hook changes

Signed-off-by: Oliver Calder <oliver.calder@canonical.com>

* docs(snap): remove verbose explanation of snap gateway refresh behavior

Signed-off-by: Oliver Calder <oliver.calder@canonical.com>

---------

Signed-off-by: Oliver Calder <oliver.calder@canonical.com>
2026-10-01 15:10:38 +00:00

166 lines
6.3 KiB
YAML

# SPDX-FileCopyrightText: Copyright (c) 2025-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
name: openshell
title: OpenShell
adopt-info: openshell
summary: Safe, sandboxed runtimes for autonomous AI agents
description: |
OpenShell provides safe, sandboxed runtimes for autonomous AI agents.
It offers a CLI for managing gateways, sandboxes, and providers with
policy-enforced egress routing, credential proxying, and privacy-aware
profile-backed model-provider access.
The OpenShell snap ships a CLI (`openshell`), a terminal UI
(`openshell.term`), and a managed gateway daemon (`openshell.gateway`).
**Setup instructions**
1. Install and start Docker using your preferred package source before
installing the OpenShell snap. Use a system package or Docker's package
repository. The Docker snap is not currently compatible with OpenShell.
Snap Store installations automatically connect the required interfaces.
If the OpenShell snap was installed before Docker was running, it may
have hit the systemd start limit when trying to repeatedly start and
connect to docker. If this is the case, it can be resolved by doing:
sudo systemctl reset-failed snap.openshell.gateway.service
sudo snap restart openshell.gateway
2. Give your user the gateway client certificate and register the gateway.
The gateway requires mTLS; only users holding this certificate can use
it, so copy it only for trusted users:
snap services openshell.gateway
d=~/snap/openshell/common/.local/state/openshell/tls
mkdir -p -m 700 "$d" "$d/client"
sudo install -o "$USER" -m 600 /var/snap/openshell/common/tls/ca.crt "$d/"
sudo install -o "$USER" -m 600 -t "$d/client" \
/var/snap/openshell/common/tls/client/tls.crt /var/snap/openshell/common/tls/client/tls.key
openshell gateway add https://127.0.0.1:17670 --local --name openshell
openshell status
base: core24
grade: stable
confinement: strict
# The system :docker slot was added in snapd 2.76, so this is the minimum
# required version. Snapd 2.77 allowed manual connection to that slot without
# snap-declaration overrides from the store, such as when installing a locally-
# built snap, but that is not required for installations from the snap store.
assumes: [snapd2.76]
license: Apache-2.0
website: https://docs.nvidia.com/openshell/latest/index.html
source-code: https://github.com/NVIDIA/OpenShell
issues: https://github.com/NVIDIA/OpenShell/issues
contact: https://github.com/NVIDIA/OpenShell/security/policy
platforms:
amd64:
build-on: [amd64]
build-for: [amd64]
arm64:
build-on: [arm64]
build-for: [arm64]
apps:
openshell:
command: bin/openshell
environment:
XDG_CONFIG_HOME: "$SNAP_USER_COMMON/.config"
XDG_DATA_HOME: "$SNAP_USER_COMMON/.local/share"
XDG_STATE_HOME: "$SNAP_USER_COMMON/.local/state"
plugs:
- home
- network
- system-observe
term:
command: bin/openshell term
desktop: meta/gui/term.desktop
environment:
XDG_CONFIG_HOME: "$SNAP_USER_COMMON/.config"
XDG_DATA_HOME: "$SNAP_USER_COMMON/.local/share"
XDG_STATE_HOME: "$SNAP_USER_COMMON/.local/state"
plugs:
- home
- network
- system-observe
gateway:
command: bin/openshell-gateway-wrapper
daemon: simple
# refresh-mode: endure prevents snapd from restarting the gateway daemon
# during snap refreshes, which would kill active sandbox sessions.
# Operators must manually restart the service after a refresh if needed.
refresh-mode: endure
# Snapd runs this daemon as root. The wrapper serves TLS from the bundle
# generated in $SNAP_COMMON/tls, and the default config requires client
# certificates; the installer copies the client bundle to the target
# user. The wrapper uses $SNAP_COMMON/gateway.db. Before startup it
# bootstraps package-managed credentials and validates the selected
# operator-provided config without creating or rewriting it. A nonempty
# OPENSHELL_GATEWAY_CONFIG takes precedence over gateway.toml.
environment:
XDG_DATA_HOME: "$SNAP_COMMON"
XDG_RUNTIME_DIR: "$SNAP_COMMON"
plugs:
- docker
- log-observe
- network
- network-bind
- system-observe
parts:
openshell:
plugin: nil
source: ./snap/prebuilt
override-pull: |
craftctl default
craftctl set version="$(cat "$CRAFT_PART_SRC/version")"
override-build: |
set -euo pipefail
MISSING=()
for bin in openshell openshell-gateway openshell-sandbox openshell-gateway-wrapper; do
if [ ! -f "$CRAFT_PART_SRC/$bin" ]; then
MISSING+=("$bin")
fi
done
if [ ${#MISSING[@]} -gt 0 ]; then
printf '%s\n' \
"ERROR: snap/prebuilt/ is incomplete:" \
"${MISSING[@]/#/' - '}" \
"" \
"The snap build directory must be populated by CI before snapcraft pack." \
>&2
exit 1
fi
install -D -m 0755 "$CRAFT_PART_SRC/openshell" \
"$CRAFT_PART_INSTALL/bin/openshell"
install -D -m 0755 "$CRAFT_PART_SRC/openshell-gateway" \
"$CRAFT_PART_INSTALL/bin/openshell-gateway"
install -D -m 0755 "$CRAFT_PART_SRC/openshell-sandbox" \
"$CRAFT_PART_INSTALL/bin/openshell-sandbox"
install -D -m 0755 "$CRAFT_PART_SRC/openshell-gateway-wrapper" \
"$CRAFT_PART_INSTALL/bin/openshell-gateway-wrapper"
install -D -m 0644 "$CRAFT_PART_SRC/meta/gui/term.desktop" \
"$CRAFT_PART_INSTALL/meta/gui/term.desktop"
install -D -m 0644 "$CRAFT_PART_SRC/meta/gui/icon.png" \
"$CRAFT_PART_INSTALL/meta/gui/icon.png"
install -D -m 0644 "$CRAFT_PART_SRC/LICENSE" \
"$CRAFT_PART_INSTALL/usr/share/doc/openshell/LICENSE"
install -D -m 0644 "$CRAFT_PART_SRC/README.md" \
"$CRAFT_PART_INSTALL/usr/share/doc/openshell/README.md"
ssh:
# Vendor the openssh-client `ssh` binary into the snap so the CLI/TUI
# can spawn `ssh` for sandbox connect/exec/forward without relying on
# the host's ssh-keys interface. The binary lands at
# $SNAP/usr/bin/ssh and is found via the snap runtime PATH.
plugin: nil
stage-packages:
- openssh-client
prime:
- usr/bin/ssh