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runc.go
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runc.go
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/*
Copyright 2020 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package cloudup
import (
"fmt"
"net/url"
"github.com/blang/semver/v4"
"k8s.io/kops/pkg/apis/kops"
"k8s.io/kops/pkg/assets"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/util/pkg/architectures"
"k8s.io/kops/util/pkg/hashing"
)
const (
runcVersionUrlAmd64 = "https://github.com/opencontainers/runc/releases/download/v%s/runc.amd64"
runcVersionUrlArm64 = "https://github.com/opencontainers/runc/releases/download/v%s/runc.arm64"
)
func findRuncAsset(c *kops.Cluster, assetBuilder *assets.AssetBuilder, arch architectures.Architecture) (*url.URL, *hashing.Hash, error) {
if c.Spec.Containerd == nil {
return nil, nil, fmt.Errorf("unable to find containerd config")
}
containerd := c.Spec.Containerd
containerdVersion, err := semver.ParseTolerant(fi.ValueOf(containerd.Version))
if err != nil {
return nil, nil, fmt.Errorf("unable to parse version string: %q", fi.ValueOf(containerd.Version))
}
// A compatible runc binary is bundled with containerd builds < v1.6.0
// https://github.com/containerd/containerd/issues/6541
if containerdVersion.LT(semver.MustParse("1.6.0")) {
return nil, nil, nil
}
if containerd.Runc == nil {
return nil, nil, fmt.Errorf("unable to find runc config")
}
runc := containerd.Runc
if runc.Packages != nil {
if arch == architectures.ArchitectureAmd64 && runc.Packages.UrlAmd64 != nil && runc.Packages.HashAmd64 != nil {
assetUrl := fi.ValueOf(runc.Packages.UrlAmd64)
assetHash := fi.ValueOf(runc.Packages.HashAmd64)
return findAssetsUrlHash(assetBuilder, assetUrl, assetHash)
}
if arch == architectures.ArchitectureArm64 && runc.Packages.UrlArm64 != nil && runc.Packages.HashArm64 != nil {
assetUrl := fi.ValueOf(runc.Packages.UrlArm64)
assetHash := fi.ValueOf(runc.Packages.HashArm64)
return findAssetsUrlHash(assetBuilder, assetUrl, assetHash)
}
}
version := fi.ValueOf(runc.Version)
if version == "" {
return nil, nil, fmt.Errorf("unable to find runc version")
}
assetUrl, assetHash, err := findRuncVersionUrlHash(arch, version)
if err != nil {
return nil, nil, err
}
return findAssetsUrlHash(assetBuilder, assetUrl, assetHash)
}
func findRuncVersionUrlHash(arch architectures.Architecture, version string) (u string, h string, e error) {
var runcAssetUrl, runcAssetHash string
if findAllRuncHashesAmd64()[version] != "" {
var err error
runcAssetUrl, err = findRuncVersionUrl(arch, version)
if err != nil {
return "", "", err
}
runcAssetHash, err = findRuncVersionHash(arch, version)
if err != nil {
return "", "", err
}
} else {
return "", "", fmt.Errorf("unknown url and hash for runc version: %s - %s", arch, version)
}
return runcAssetUrl, runcAssetHash, nil
}
func findRuncVersionUrl(arch architectures.Architecture, version string) (string, error) {
sv, err := semver.ParseTolerant(version)
if err != nil {
return "", fmt.Errorf("unable to parse version string: %q", version)
}
if sv.LT(semver.MustParse("1.1.0")) {
return "", fmt.Errorf("unsupported runc version: %q", version)
}
var u string
switch arch {
case architectures.ArchitectureAmd64:
u = fmt.Sprintf(runcVersionUrlAmd64, version)
case architectures.ArchitectureArm64:
u = fmt.Sprintf(runcVersionUrlArm64, version)
default:
return "", fmt.Errorf("unknown arch: %q", arch)
}
if u == "" {
return "", fmt.Errorf("unknown url for runc version: %s - %s", arch, version)
}
return u, nil
}
func findRuncVersionHash(arch architectures.Architecture, version string) (string, error) {
sv, err := semver.ParseTolerant(version)
if err != nil {
return "", fmt.Errorf("unable to parse version string: %q", version)
}
if sv.LT(semver.MustParse("1.1.0")) {
return "", fmt.Errorf("unsupported runc version: %q", version)
}
var h string
switch arch {
case architectures.ArchitectureAmd64:
h = findAllRuncHashesAmd64()[version]
case architectures.ArchitectureArm64:
h = findAllRuncHashesArm64()[version]
default:
return "", fmt.Errorf("unknown arch: %q", arch)
}
if h == "" {
return "", fmt.Errorf("unknown hash for runc version: %s - %s", arch, version)
}
return h, nil
}
func findAllRuncHashesAmd64() map[string]string {
hashes := map[string]string{
"1.1.0": "ab1c67fbcbdddbe481e48a55cf0ef9a86b38b166b5079e0010737fd87d7454bb",
"1.1.1": "5798c85d2c8b6942247ab8d6830ef362924cd72a8e236e77430c3ab1be15f080",
"1.1.2": "e0436dfc5d26ca88f00e84cbdab5801dd9829b1e5ded05dcfc162ce5718c32ce",
"1.1.3": "6e8b24be90fffce6b025d254846da9d2ca6d65125f9139b6354bab0272253d01",
"1.1.4": "db772be63147a4e747b4fe286c7c16a2edc4a8458bd3092ea46aaee77750e8ce",
}
return hashes
}
func findAllRuncHashesArm64() map[string]string {
hashes := map[string]string{
"1.1.0": "9ec8e68feabc4e7083a4cfa45ebe4d529467391e0b03ee7de7ddda5770b05e68",
"1.1.1": "20c436a736547309371c7ac2a335f5fe5a42b450120e497d09c8dc3902c28444",
"1.1.2": "6ebd968d46d00a3886e9a0cae2e0a7b399e110cf5d7b26e63ce23c1d81ea10ef",
"1.1.3": "00c9ad161a77a01d9dcbd25b1d76fa9822e57d8e4abf26ba8907c98f6bcfcd0f",
"1.1.4": "dbb71e737eaef454a406ce21fd021bd8f1b35afb7635016745992bbd7c17a223",
}
return hashes
}