mirror of
https://github.com/token2/snapd.git
synced 2026-03-13 11:15:47 -07:00
135 lines
3.5 KiB
Go
135 lines
3.5 KiB
Go
// -*- Mode: Go; indent-tabs-mode: t -*-
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/*
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* Copyright (C) 2014-2020 Canonical Ltd
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 3 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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package seed
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import (
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"bytes"
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"fmt"
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"path/filepath"
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"sort"
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"github.com/snapcore/snapd/snap"
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"github.com/snapcore/snapd/snap/snapfile"
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"github.com/snapcore/snapd/timings"
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)
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type ValidationError struct {
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// SystemErrors maps system labels ("" for UC16/18) to their validation errors.
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SystemErrors map[string][]error
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}
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func newValidationError(label string, err error) *ValidationError {
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return &ValidationError{SystemErrors: map[string][]error{
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label: {err},
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}}
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}
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func (e *ValidationError) addErr(label string, errs ...error) {
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if e.SystemErrors == nil {
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e.SystemErrors = make(map[string][]error)
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}
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e.SystemErrors[label] = append(e.SystemErrors[label], errs...)
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}
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func (e ValidationError) hasErrors() bool {
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return len(e.SystemErrors) != 0
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}
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func (e *ValidationError) Error() string {
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systems := make([]string, 0, len(e.SystemErrors))
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for s := range e.SystemErrors {
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systems = append(systems, s)
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}
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sort.Strings(systems)
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var buf bytes.Buffer
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first := true
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for _, s := range systems {
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if first {
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if s == "" {
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fmt.Fprintf(&buf, "cannot validate seed:")
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} else {
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fmt.Fprintf(&buf, "cannot validate seed system %q:", s)
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}
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} else {
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fmt.Fprintf(&buf, "\nand seed system %q:", s)
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}
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for _, err := range e.SystemErrors[s] {
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fmt.Fprintf(&buf, "\n - %s", err)
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}
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first = false
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}
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return buf.String()
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}
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// ValidateFromYaml validates the given seed.yaml file and surrounding seed.
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func ValidateFromYaml(seedYamlFile string) error {
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// TODO:UC20: support validating also one or multiple UC20 seed systems
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// introduce ListSystems ?
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// What about full empty seed dir?
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seedDir := filepath.Dir(seedYamlFile)
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seed, err := Open(seedDir, "")
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if err != nil {
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return newValidationError("", err)
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}
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if err := seed.LoadAssertions(nil, nil); err != nil {
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return newValidationError("", err)
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}
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tm := timings.New(nil)
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if err := seed.LoadMeta(AllModes, nil, tm); err != nil {
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if missingErr, ok := err.(*essentialSnapMissingError); ok {
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if seed.Model().Classic() && missingErr.SnapName == "core" {
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err = fmt.Errorf("essential snap core or snapd must be part of the seed")
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}
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}
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return newValidationError("", err)
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}
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ve := &ValidationError{}
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// read the snap infos
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snapInfos := make([]*snap.Info, 0, seed.NumSnaps())
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seed.Iter(func(sn *Snap) error {
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snapf, err := snapfile.Open(sn.Path)
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if err != nil {
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ve.addErr("", err)
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} else {
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info, err := snap.ReadInfoFromSnapFile(snapf, sn.SideInfo)
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if err != nil {
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ve.addErr("", fmt.Errorf("cannot use snap %q: %v", sn.Path, err))
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} else {
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snapInfos = append(snapInfos, info)
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}
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}
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return nil
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})
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// TODO: surface the warnings too, like we do for snap container checks
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if _, errs2 := snap.ValidateBasesAndProviders(snapInfos); errs2 != nil {
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ve.addErr("", errs2...)
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}
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if ve.hasErrors() {
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return ve
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}
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return nil
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}
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