almalinux.go

// SPDX-License-Identifier: Apache-2.0
/*
Copyright (C) 2023 The Falco 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 builder

import (
	_ "embed"
	"fmt"

	"github.com/falcosecurity/driverkit/pkg/kernelrelease"
)

//go:embed templates/almalinux_kernel.sh
var almaKernelTemplate string

//go:embed templates/almalinux.sh
var almaTemplate string

// TargetTypeAlma identifies the AlmaLinux target.
const TargetTypeAlma Type = "almalinux"

func init() {
	byTarget[TargetTypeAlma] = &alma{}
}

type almaTemplateData struct {
	KernelDownloadURL string
}

// alma is a driverkit target.
type alma struct {
}

func (c *alma) Name() string {
	return TargetTypeAlma.String()
}

func (c *alma) TemplateKernelUrlsScript() string {
	return almaKernelTemplate
}

func (c *alma) TemplateScript() string {
	return almaTemplate
}

func (c *alma) URLs(kr kernelrelease.KernelRelease) ([]string, error) {
	return fetchAlmaKernelURLS(kr), nil
}

func (c *alma) KernelTemplateData(_ kernelrelease.KernelRelease, urls []string) interface{} {
	return almaTemplateData{
		KernelDownloadURL: urls[0],
	}
}

func fetchAlmaKernelURLS(kr kernelrelease.KernelRelease) []string {
	almaReleases := []string{
		"8",
		"8.6",
		"9",
		"9.0",
	}

	urls := []string{}
	for _, r := range almaReleases {
		if r >= "9" {
			urls = append(urls, fmt.Sprintf(
				"https://repo.almalinux.org/almalinux/%s/AppStream/%s/os/Packages/kernel-devel-%s%s.rpm",
				r,
				kr.Architecture.ToNonDeb(),
				kr.Fullversion,
				kr.FullExtraversion,
			))
		} else {
			urls = append(urls, fmt.Sprintf(
				"https://repo.almalinux.org/almalinux/%s/BaseOS/%s/os/Packages/kernel-devel-%s%s.rpm",
				r,
				kr.Architecture.ToNonDeb(),
				kr.Fullversion,
				kr.FullExtraversion,
			))
		}
	}
	return urls
}