oracle.go

package builder

import (
	_ "embed"
	"fmt"
	"strings"

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

//go:embed templates/oracle.sh
var oracleTemplate string

// TargetTypeoracle identifies the oracle target ("ol" is the ID from /etc/os-release that Oracle uses)
const TargetTypeoracle Type = "ol"

func init() {
	BuilderByTarget[TargetTypeoracle] = &oracle{}
}

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

type oracleTemplateData struct {
	commonTemplateData
	KernelDownloadURL string
}

func (c *oracle) Name() string {
	return TargetTypeoracle.String()
}

func (c *oracle) TemplateScript() string {
	return oracleTemplate
}

func (c *oracle) URLs(kr kernelrelease.KernelRelease) ([]string, error) {

	// oracle FullExtraversion looks like "-2047.510.5.5.el7uek.x86_64"
	// need to get the "el7uek" out of the middle
	splitVersion := strings.Split(kr.FullExtraversion, ".")
	oracleVersion := splitVersion[len(splitVersion)-2] // [ "-2047", "510", "5", "5", "el7uek","x86_64" ] want -2

	// trim off the "el" and "uek" from oracleVersion
	version := strings.Trim(strings.Trim(oracleVersion, "el"), "uek")

	// sometimes Oracle 8 does "8_x" for version, only want the "8"
	if strings.Contains(version, "_") {
		version = strings.Split(version, "_")[0]
	}

	// list of possible UEK versions, which are used in the URL - ex: "UEKR3"
	// may need to evolve over time if Oracle adds more
	ueks := []string{"R3", "R4", "R5", "R6", "R7"}

	// template the kernel info into all possible URL strings
	urls := []string{
		fmt.Sprintf( // latest (Oracle 7)
			"http://yum.oracle.com/repo/OracleLinux/OL%s/latest/%s/getPackage/kernel-devel-%s%s.rpm",
			version,
			kr.Architecture.ToNonDeb(),
			kr.Fullversion,
			kr.FullExtraversion,
		),
		fmt.Sprintf( // latest + baseos (Oracle 8 + 9)
			"http://yum.oracle.com/repo/OracleLinux/OL%s/baseos/latest/%s/getPackage/kernel-devel-%s%s.rpm",
			version,
			kr.Architecture.ToNonDeb(),
			kr.Fullversion,
			kr.FullExtraversion,
		),
		fmt.Sprintf( // appstream (Oracle 8 + 9)
			"http://yum.oracle.com/repo/OracleLinux/OL%s/appstream/%s/getPackage/kernel-devel-%s%s.rpm",
			version,
			kr.Architecture.ToNonDeb(),
			kr.Fullversion,
			kr.FullExtraversion,
		),
		fmt.Sprintf( // MODRHCK (Oracle 7)
			"http://yum.oracle.com/repo/OracleLinux/OL%s/MODRHCK/%s/getPackage/kernel-devel-%s%s.rpm",
			version,
			kr.Architecture.ToNonDeb(),
			kr.Fullversion,
			kr.FullExtraversion,
		),
	}

	// add in all the UEK versions
	for _, uekVers := range ueks {
		urls = append(
			urls,
			fmt.Sprintf( // UEK versions URL
				"http://yum.oracle.com/repo/OracleLinux/OL%s/UEK%s/%s/getPackage/kernel-uek-devel-%s%s.rpm",
				version,
				uekVers,
				kr.Architecture.ToNonDeb(),
				kr.Fullversion,
				kr.FullExtraversion,
			),
		)
	}

	// return out all possible urls
	return urls, nil
}

func (c *oracle) TemplateData(cfg Config, kr kernelrelease.KernelRelease, urls []string) interface{} {
	return oracleTemplateData{
		commonTemplateData: cfg.toTemplateData(c, kr),
		KernelDownloadURL:  urls[0],
	}
}