util

package

v1.0.6 Latest Latest Go to latest Published: Mar 10, 2022 License: GPL-2.0 Imports: 19 Imported by: 0

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Valid go.mod file
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github.com/cdk-team/CDK

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Documentation ¶

Index ¶

func ByteToString(orig []byte) string
func CheckUnpriUserNS() error
func ContainsStrInSlice(elem string, sli []string) bool
func FileExist(path string) bool
func FindTargetDeviceID(mi *MountInfo) bool
func GetAllCGroupSubSystem() ([]string, error)
func GetCgroupVersion() (int, error)
func GetKernelVersion() ([]int, error)
func HttpSendJson(method string, url string, data string) (string, error)
func IntContains(s []int, e int) bool
func IsDir(FilePath string) bool
func IsDirectory(path string) bool
func IsSoftLink(FilePath string) bool
func MakeDev(major, minor string) int
func RandString(n int) string
func ReadLines(path string) ([]string, error)
func RemoveDuplicateElement(addrs []string) []string
func RewriteFile(path string, content string, perm os.FileMode)
func SetBlockAccessible(path string) error
func ShellExec(shellPath string) error
func StringContains(s []string, e string) bool
func UnixHttpSend(method string, unixPath string, uri string, data string) (string, error)
func WriteFile(path string, content string) error
func WriteFileAdd(path string, content string) error
func WriteShellcodeToCrontab(header string, filePath string, shellcode string) error
type CgroupInfo
- func GetAllCGroup() ([]CgroupInfo, error)
type MountInfo
- func GetMountInfo() ([]MountInfo, error)

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func ByteToString ¶

func ByteToString(orig []byte) string

func CheckUnpriUserNS ¶ added in v1.0.6

func CheckUnpriUserNS() error

CheckUnpriUserNS checks if the current host enable unprivileged user namespace. reference:

https://blog.trailofbits.com/2019/07/19/understanding-docker-container-escapes/
https://unit42.paloaltonetworks.com/cve-2022-0492-cgroups/

exceptional case:

the sysctl files(/proc/sys/kernel/unprivileged_userns_clone) only exist in Debian, Ubuntu.
We can not check the sysctl file in other distros, test in CentOS Linux release 8.4.2105 (Core).

func ContainsStrInSlice ¶ added in v1.0.6

func ContainsStrInSlice(elem string, sli []string) bool

func FileExist ¶ added in v1.0.3

func FileExist(path string) bool

func FindTargetDeviceID ¶

func FindTargetDeviceID(mi *MountInfo) bool

find block device id

func GetAllCGroupSubSystem ¶ added in v1.0.6

func GetAllCGroupSubSystem() ([]string, error)

func GetCgroupVersion ¶ added in v1.0.6

func GetCgroupVersion() (int, error)

get cgroup version V1/V2 hybrid mode will not work in container

func GetKernelVersion ¶ added in v1.0.6

func GetKernelVersion() ([]int, error)

get kernel version

func HttpSendJson ¶ added in v0.1.10

func HttpSendJson(method string, url string, data string) (string, error)

func IntContains ¶ added in v1.0.4

func IntContains(s []int, e int) bool

IntContains check string array contains a int number

func IsDir ¶

func IsDir(FilePath string) bool

func IsDirectory ¶ added in v1.0.2

func IsDirectory(path string) bool

func IsSoftLink ¶

func IsSoftLink(FilePath string) bool

func MakeDev ¶

func MakeDev(major, minor string) int

func RandString ¶

func RandString(n int) string

func ReadLines ¶ added in v1.0.3

func ReadLines(path string) ([]string, error)

ReadLines reads a whole file into memory and returns a slice of its lines. from https://stackoverflow.com/questions/5884154/read-text-file-into-string-array-and-write

func RemoveDuplicateElement ¶

func RemoveDuplicateElement(addrs []string) []string

func RewriteFile ¶

func RewriteFile(path string, content string, perm os.FileMode)

func SetBlockAccessible ¶

func SetBlockAccessible(path string) error

set all block device accessible

func ShellExec ¶

func ShellExec(shellPath string) error

ShellExec run shell script by bash

func StringContains ¶ added in v1.0.4

func StringContains(s []string, e string) bool

StringContains check string array contains a string

func UnixHttpSend ¶

func UnixHttpSend(method string, unixPath string, uri string, data string) (string, error)

ref https://docs.docker.com/engine/api/v1.24/

func WriteFile ¶

func WriteFile(path string, content string) error

func WriteFileAdd ¶ added in v1.0.1

func WriteFileAdd(path string, content string) error

func WriteShellcodeToCrontab ¶ added in v1.0.1

func WriteShellcodeToCrontab(header string, filePath string, shellcode string) error

Types ¶

type CgroupInfo ¶ added in v1.0.6

type CgroupInfo struct {
	HierarchyID   int
	ControllerLst string // split by "," but should not be split
	CgroupPath    string
}

func GetAllCGroup ¶ added in v1.0.6

func GetAllCGroup() ([]CgroupInfo, error)

type MountInfo ¶

type MountInfo struct {
	Device            string
	Fstype            string
	Root              string
	MountPoint        string
	Opts              []string
	Major             string
	Minor             string
	SuperBlockOptions []string
}

func GetMountInfo ¶

func GetMountInfo() ([]MountInfo, error)

Source Files ¶

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Directories ¶

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