Esempio n. 1
0
// NewNetworkerAPI creates a new server-side Networker API facade.
func NewNetworkerAPI(
	st *state.State,
	resources *common.Resources,
	authorizer common.Authorizer,
) (*NetworkerAPI, error) {
	if !authorizer.AuthMachineAgent() {
		return nil, common.ErrPerm
	}
	getAuthFunc := func() (common.AuthFunc, error) {
		authEntityTag := authorizer.GetAuthTag()

		return func(tag names.Tag) bool {
			if tag == authEntityTag {
				// A machine agent can always access its own machine.
				return true
			}
			if _, ok := tag.(names.MachineTag); !ok {
				// Only machine tags are allowed.
				return false
			}
			id := tag.Id()
			for parentId := state.ParentId(id); parentId != ""; parentId = state.ParentId(parentId) {
				// Until a top-level machine is reached.

				// TODO (thumper): remove the names.Tag conversion when gccgo
				// implements concrete-type-to-interface comparison correctly.
				if names.Tag(names.NewMachineTag(parentId)) == authEntityTag {
					// All containers with the authenticated machine as a
					// parent are accessible by it.
					return true
				}
			}
			// Not found authorized machine agent among ancestors of the current one.
			return false
		}, nil
	}

	return &NetworkerAPI{
		st:          st,
		resources:   resources,
		authorizer:  authorizer,
		getAuthFunc: getAuthFunc,
	}, nil
}
Esempio n. 2
0
// NewKeyManagerAPI creates a new server-side keyupdater API end point.
func NewKeyManagerAPI(st *state.State, resources *common.Resources, authorizer common.Authorizer) (*KeyManagerAPI, error) {
	// Only clients and environment managers can access the key manager service.
	if !authorizer.AuthClient() && !authorizer.AuthEnvironManager() {
		return nil, common.ErrPerm
	}
	env, err := st.Environment()
	if err != nil {
		return nil, errors.Trace(err)
	}
	// For gccgo interface comparisons, we need a Tag.
	owner := names.Tag(env.Owner())
	// TODO(wallyworld) - replace stub with real canRead function
	// For now, only admins can read authorised ssh keys.
	canRead := func(user string) bool {
		// Are we a machine agent operating as the system identity?
		if user == config.JujuSystemKey {
			_, ismachinetag := authorizer.GetAuthTag().(names.MachineTag)
			return ismachinetag
		}
		return authorizer.GetAuthTag() == owner
	}
	// TODO(wallyworld) - replace stub with real canWrite function
	// For now, only admins can write authorised ssh keys for users.
	// Machine agents can write the juju-system-key.
	canWrite := func(user string) bool {
		// Are we a machine agent writing the Juju system key.
		if user == config.JujuSystemKey {
			_, ismachinetag := authorizer.GetAuthTag().(names.MachineTag)
			return ismachinetag
		}
		// No point looking to see if the user exists as we are not
		// yet storing keys on the user.
		return authorizer.GetAuthTag() == owner
	}
	return &KeyManagerAPI{
		state:      st,
		resources:  resources,
		authorizer: authorizer,
		canRead:    canRead,
		canWrite:   canWrite,
		check:      common.NewBlockChecker(st),
	}, nil
}
Esempio n. 3
0
// NewDeployerAPI creates a new server-side DeployerAPI facade.
func NewDeployerAPI(
	st *state.State,
	resources *common.Resources,
	authorizer common.Authorizer,
) (*DeployerAPI, error) {
	if !authorizer.AuthMachineAgent() {
		return nil, common.ErrPerm
	}
	getAuthFunc := func() (common.AuthFunc, error) {
		// Get all units of the machine and cache them.
		thisMachineTag := authorizer.GetAuthTag()
		units, err := getAllUnits(st, thisMachineTag)
		if err != nil {
			return nil, err
		}
		// Then we just check if the unit is already known.
		return func(tag names.Tag) bool {
			for _, unit := range units {
				// TODO (thumper): remove the names.Tag conversion when gccgo
				// implements concrete-type-to-interface comparison correctly.
				if names.Tag(names.NewUnitTag(unit)) == tag {
					return true
				}
			}
			return false
		}, nil
	}
	getCanWatch := func() (common.AuthFunc, error) {
		return authorizer.AuthOwner, nil
	}
	return &DeployerAPI{
		Remover:         common.NewRemover(st, true, getAuthFunc),
		PasswordChanger: common.NewPasswordChanger(st, getAuthFunc),
		LifeGetter:      common.NewLifeGetter(st, getAuthFunc),
		StateAddresser:  common.NewStateAddresser(st),
		APIAddresser:    common.NewAPIAddresser(st, resources),
		UnitsWatcher:    common.NewUnitsWatcher(st, resources, getCanWatch),
		st:              st,
		resources:       resources,
		authorizer:      authorizer,
	}, nil
}