You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
565 lines
15 KiB
Go
565 lines
15 KiB
Go
package stdlib
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"os"
|
|
"os/exec"
|
|
|
|
"github.com/d5/tengo/v2"
|
|
)
|
|
|
|
var osModule = map[string]tengo.Object{
|
|
"o_rdonly": &tengo.Int{Value: int64(os.O_RDONLY)},
|
|
"o_wronly": &tengo.Int{Value: int64(os.O_WRONLY)},
|
|
"o_rdwr": &tengo.Int{Value: int64(os.O_RDWR)},
|
|
"o_append": &tengo.Int{Value: int64(os.O_APPEND)},
|
|
"o_create": &tengo.Int{Value: int64(os.O_CREATE)},
|
|
"o_excl": &tengo.Int{Value: int64(os.O_EXCL)},
|
|
"o_sync": &tengo.Int{Value: int64(os.O_SYNC)},
|
|
"o_trunc": &tengo.Int{Value: int64(os.O_TRUNC)},
|
|
"mode_dir": &tengo.Int{Value: int64(os.ModeDir)},
|
|
"mode_append": &tengo.Int{Value: int64(os.ModeAppend)},
|
|
"mode_exclusive": &tengo.Int{Value: int64(os.ModeExclusive)},
|
|
"mode_temporary": &tengo.Int{Value: int64(os.ModeTemporary)},
|
|
"mode_symlink": &tengo.Int{Value: int64(os.ModeSymlink)},
|
|
"mode_device": &tengo.Int{Value: int64(os.ModeDevice)},
|
|
"mode_named_pipe": &tengo.Int{Value: int64(os.ModeNamedPipe)},
|
|
"mode_socket": &tengo.Int{Value: int64(os.ModeSocket)},
|
|
"mode_setuid": &tengo.Int{Value: int64(os.ModeSetuid)},
|
|
"mode_setgui": &tengo.Int{Value: int64(os.ModeSetgid)},
|
|
"mode_char_device": &tengo.Int{Value: int64(os.ModeCharDevice)},
|
|
"mode_sticky": &tengo.Int{Value: int64(os.ModeSticky)},
|
|
"mode_type": &tengo.Int{Value: int64(os.ModeType)},
|
|
"mode_perm": &tengo.Int{Value: int64(os.ModePerm)},
|
|
"path_separator": &tengo.Char{Value: os.PathSeparator},
|
|
"path_list_separator": &tengo.Char{Value: os.PathListSeparator},
|
|
"dev_null": &tengo.String{Value: os.DevNull},
|
|
"seek_set": &tengo.Int{Value: int64(io.SeekStart)},
|
|
"seek_cur": &tengo.Int{Value: int64(io.SeekCurrent)},
|
|
"seek_end": &tengo.Int{Value: int64(io.SeekEnd)},
|
|
"args": &tengo.UserFunction{
|
|
Name: "args",
|
|
Value: osArgs,
|
|
}, // args() => array(string)
|
|
"chdir": &tengo.UserFunction{
|
|
Name: "chdir",
|
|
Value: FuncASRE(os.Chdir),
|
|
}, // chdir(dir string) => error
|
|
"chmod": osFuncASFmRE("chmod", os.Chmod), // chmod(name string, mode int) => error
|
|
"chown": &tengo.UserFunction{
|
|
Name: "chown",
|
|
Value: FuncASIIRE(os.Chown),
|
|
}, // chown(name string, uid int, gid int) => error
|
|
"clearenv": &tengo.UserFunction{
|
|
Name: "clearenv",
|
|
Value: FuncAR(os.Clearenv),
|
|
}, // clearenv()
|
|
"environ": &tengo.UserFunction{
|
|
Name: "environ",
|
|
Value: FuncARSs(os.Environ),
|
|
}, // environ() => array(string)
|
|
"exit": &tengo.UserFunction{
|
|
Name: "exit",
|
|
Value: FuncAIR(os.Exit),
|
|
}, // exit(code int)
|
|
"expand_env": &tengo.UserFunction{
|
|
Name: "expand_env",
|
|
Value: osExpandEnv,
|
|
}, // expand_env(s string) => string
|
|
"getegid": &tengo.UserFunction{
|
|
Name: "getegid",
|
|
Value: FuncARI(os.Getegid),
|
|
}, // getegid() => int
|
|
"getenv": &tengo.UserFunction{
|
|
Name: "getenv",
|
|
Value: FuncASRS(os.Getenv),
|
|
}, // getenv(s string) => string
|
|
"geteuid": &tengo.UserFunction{
|
|
Name: "geteuid",
|
|
Value: FuncARI(os.Geteuid),
|
|
}, // geteuid() => int
|
|
"getgid": &tengo.UserFunction{
|
|
Name: "getgid",
|
|
Value: FuncARI(os.Getgid),
|
|
}, // getgid() => int
|
|
"getgroups": &tengo.UserFunction{
|
|
Name: "getgroups",
|
|
Value: FuncARIsE(os.Getgroups),
|
|
}, // getgroups() => array(string)/error
|
|
"getpagesize": &tengo.UserFunction{
|
|
Name: "getpagesize",
|
|
Value: FuncARI(os.Getpagesize),
|
|
}, // getpagesize() => int
|
|
"getpid": &tengo.UserFunction{
|
|
Name: "getpid",
|
|
Value: FuncARI(os.Getpid),
|
|
}, // getpid() => int
|
|
"getppid": &tengo.UserFunction{
|
|
Name: "getppid",
|
|
Value: FuncARI(os.Getppid),
|
|
}, // getppid() => int
|
|
"getuid": &tengo.UserFunction{
|
|
Name: "getuid",
|
|
Value: FuncARI(os.Getuid),
|
|
}, // getuid() => int
|
|
"getwd": &tengo.UserFunction{
|
|
Name: "getwd",
|
|
Value: FuncARSE(os.Getwd),
|
|
}, // getwd() => string/error
|
|
"hostname": &tengo.UserFunction{
|
|
Name: "hostname",
|
|
Value: FuncARSE(os.Hostname),
|
|
}, // hostname() => string/error
|
|
"lchown": &tengo.UserFunction{
|
|
Name: "lchown",
|
|
Value: FuncASIIRE(os.Lchown),
|
|
}, // lchown(name string, uid int, gid int) => error
|
|
"link": &tengo.UserFunction{
|
|
Name: "link",
|
|
Value: FuncASSRE(os.Link),
|
|
}, // link(oldname string, newname string) => error
|
|
"lookup_env": &tengo.UserFunction{
|
|
Name: "lookup_env",
|
|
Value: osLookupEnv,
|
|
}, // lookup_env(key string) => string/false
|
|
"mkdir": osFuncASFmRE("mkdir", os.Mkdir), // mkdir(name string, perm int) => error
|
|
"mkdir_all": osFuncASFmRE("mkdir_all", os.MkdirAll), // mkdir_all(name string, perm int) => error
|
|
"readlink": &tengo.UserFunction{
|
|
Name: "readlink",
|
|
Value: FuncASRSE(os.Readlink),
|
|
}, // readlink(name string) => string/error
|
|
"remove": &tengo.UserFunction{
|
|
Name: "remove",
|
|
Value: FuncASRE(os.Remove),
|
|
}, // remove(name string) => error
|
|
"remove_all": &tengo.UserFunction{
|
|
Name: "remove_all",
|
|
Value: FuncASRE(os.RemoveAll),
|
|
}, // remove_all(name string) => error
|
|
"rename": &tengo.UserFunction{
|
|
Name: "rename",
|
|
Value: FuncASSRE(os.Rename),
|
|
}, // rename(oldpath string, newpath string) => error
|
|
"setenv": &tengo.UserFunction{
|
|
Name: "setenv",
|
|
Value: FuncASSRE(os.Setenv),
|
|
}, // setenv(key string, value string) => error
|
|
"symlink": &tengo.UserFunction{
|
|
Name: "symlink",
|
|
Value: FuncASSRE(os.Symlink),
|
|
}, // symlink(oldname string newname string) => error
|
|
"temp_dir": &tengo.UserFunction{
|
|
Name: "temp_dir",
|
|
Value: FuncARS(os.TempDir),
|
|
}, // temp_dir() => string
|
|
"truncate": &tengo.UserFunction{
|
|
Name: "truncate",
|
|
Value: FuncASI64RE(os.Truncate),
|
|
}, // truncate(name string, size int) => error
|
|
"unsetenv": &tengo.UserFunction{
|
|
Name: "unsetenv",
|
|
Value: FuncASRE(os.Unsetenv),
|
|
}, // unsetenv(key string) => error
|
|
"create": &tengo.UserFunction{
|
|
Name: "create",
|
|
Value: osCreate,
|
|
}, // create(name string) => imap(file)/error
|
|
"open": &tengo.UserFunction{
|
|
Name: "open",
|
|
Value: osOpen,
|
|
}, // open(name string) => imap(file)/error
|
|
"open_file": &tengo.UserFunction{
|
|
Name: "open_file",
|
|
Value: osOpenFile,
|
|
}, // open_file(name string, flag int, perm int) => imap(file)/error
|
|
"find_process": &tengo.UserFunction{
|
|
Name: "find_process",
|
|
Value: osFindProcess,
|
|
}, // find_process(pid int) => imap(process)/error
|
|
"start_process": &tengo.UserFunction{
|
|
Name: "start_process",
|
|
Value: osStartProcess,
|
|
}, // start_process(name string, argv array(string), dir string, env array(string)) => imap(process)/error
|
|
"exec_look_path": &tengo.UserFunction{
|
|
Name: "exec_look_path",
|
|
Value: FuncASRSE(exec.LookPath),
|
|
}, // exec_look_path(file) => string/error
|
|
"exec": &tengo.UserFunction{
|
|
Name: "exec",
|
|
Value: osExec,
|
|
}, // exec(name, args...) => command
|
|
"stat": &tengo.UserFunction{
|
|
Name: "stat",
|
|
Value: osStat,
|
|
}, // stat(name) => imap(fileinfo)/error
|
|
"read_file": &tengo.UserFunction{
|
|
Name: "read_file",
|
|
Value: osReadFile,
|
|
}, // readfile(name) => array(byte)/error
|
|
}
|
|
|
|
func osReadFile(args ...tengo.Object) (ret tengo.Object, err error) {
|
|
if len(args) != 1 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
fname, ok := tengo.ToString(args[0])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string(compatible)",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
}
|
|
bytes, err := ioutil.ReadFile(fname)
|
|
if err != nil {
|
|
return wrapError(err), nil
|
|
}
|
|
if len(bytes) > tengo.MaxBytesLen {
|
|
return nil, tengo.ErrBytesLimit
|
|
}
|
|
return &tengo.Bytes{Value: bytes}, nil
|
|
}
|
|
|
|
func osStat(args ...tengo.Object) (ret tengo.Object, err error) {
|
|
if len(args) != 1 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
fname, ok := tengo.ToString(args[0])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string(compatible)",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
}
|
|
stat, err := os.Stat(fname)
|
|
if err != nil {
|
|
return wrapError(err), nil
|
|
}
|
|
fstat := &tengo.ImmutableMap{
|
|
Value: map[string]tengo.Object{
|
|
"name": &tengo.String{Value: stat.Name()},
|
|
"mtime": &tengo.Time{Value: stat.ModTime()},
|
|
"size": &tengo.Int{Value: stat.Size()},
|
|
"mode": &tengo.Int{Value: int64(stat.Mode())},
|
|
},
|
|
}
|
|
if stat.IsDir() {
|
|
fstat.Value["directory"] = tengo.TrueValue
|
|
} else {
|
|
fstat.Value["directory"] = tengo.FalseValue
|
|
}
|
|
return fstat, nil
|
|
}
|
|
|
|
func osCreate(args ...tengo.Object) (tengo.Object, error) {
|
|
if len(args) != 1 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
s1, ok := tengo.ToString(args[0])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string(compatible)",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
}
|
|
res, err := os.Create(s1)
|
|
if err != nil {
|
|
return wrapError(err), nil
|
|
}
|
|
return makeOSFile(res), nil
|
|
}
|
|
|
|
func osOpen(args ...tengo.Object) (tengo.Object, error) {
|
|
if len(args) != 1 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
s1, ok := tengo.ToString(args[0])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string(compatible)",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
}
|
|
res, err := os.Open(s1)
|
|
if err != nil {
|
|
return wrapError(err), nil
|
|
}
|
|
return makeOSFile(res), nil
|
|
}
|
|
|
|
func osOpenFile(args ...tengo.Object) (tengo.Object, error) {
|
|
if len(args) != 3 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
s1, ok := tengo.ToString(args[0])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string(compatible)",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
}
|
|
i2, ok := tengo.ToInt(args[1])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "second",
|
|
Expected: "int(compatible)",
|
|
Found: args[1].TypeName(),
|
|
}
|
|
}
|
|
i3, ok := tengo.ToInt(args[2])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "third",
|
|
Expected: "int(compatible)",
|
|
Found: args[2].TypeName(),
|
|
}
|
|
}
|
|
res, err := os.OpenFile(s1, i2, os.FileMode(i3))
|
|
if err != nil {
|
|
return wrapError(err), nil
|
|
}
|
|
return makeOSFile(res), nil
|
|
}
|
|
|
|
func osArgs(args ...tengo.Object) (tengo.Object, error) {
|
|
if len(args) != 0 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
arr := &tengo.Array{}
|
|
for _, osArg := range os.Args {
|
|
if len(osArg) > tengo.MaxStringLen {
|
|
return nil, tengo.ErrStringLimit
|
|
}
|
|
arr.Value = append(arr.Value, &tengo.String{Value: osArg})
|
|
}
|
|
return arr, nil
|
|
}
|
|
|
|
func osFuncASFmRE(
|
|
name string,
|
|
fn func(string, os.FileMode) error,
|
|
) *tengo.UserFunction {
|
|
return &tengo.UserFunction{
|
|
Name: name,
|
|
Value: func(args ...tengo.Object) (tengo.Object, error) {
|
|
if len(args) != 2 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
s1, ok := tengo.ToString(args[0])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string(compatible)",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
}
|
|
i2, ok := tengo.ToInt64(args[1])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "second",
|
|
Expected: "int(compatible)",
|
|
Found: args[1].TypeName(),
|
|
}
|
|
}
|
|
return wrapError(fn(s1, os.FileMode(i2))), nil
|
|
},
|
|
}
|
|
}
|
|
|
|
func osLookupEnv(args ...tengo.Object) (tengo.Object, error) {
|
|
if len(args) != 1 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
s1, ok := tengo.ToString(args[0])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string(compatible)",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
}
|
|
res, ok := os.LookupEnv(s1)
|
|
if !ok {
|
|
return tengo.FalseValue, nil
|
|
}
|
|
if len(res) > tengo.MaxStringLen {
|
|
return nil, tengo.ErrStringLimit
|
|
}
|
|
return &tengo.String{Value: res}, nil
|
|
}
|
|
|
|
func osExpandEnv(args ...tengo.Object) (tengo.Object, error) {
|
|
if len(args) != 1 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
s1, ok := tengo.ToString(args[0])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string(compatible)",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
}
|
|
var vlen int
|
|
var failed bool
|
|
s := os.Expand(s1, func(k string) string {
|
|
if failed {
|
|
return ""
|
|
}
|
|
v := os.Getenv(k)
|
|
|
|
// this does not count the other texts that are not being replaced
|
|
// but the code checks the final length at the end
|
|
vlen += len(v)
|
|
if vlen > tengo.MaxStringLen {
|
|
failed = true
|
|
return ""
|
|
}
|
|
return v
|
|
})
|
|
if failed || len(s) > tengo.MaxStringLen {
|
|
return nil, tengo.ErrStringLimit
|
|
}
|
|
return &tengo.String{Value: s}, nil
|
|
}
|
|
|
|
func osExec(args ...tengo.Object) (tengo.Object, error) {
|
|
if len(args) == 0 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
name, ok := tengo.ToString(args[0])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string(compatible)",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
}
|
|
var execArgs []string
|
|
for idx, arg := range args[1:] {
|
|
execArg, ok := tengo.ToString(arg)
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: fmt.Sprintf("args[%d]", idx),
|
|
Expected: "string(compatible)",
|
|
Found: args[1+idx].TypeName(),
|
|
}
|
|
}
|
|
execArgs = append(execArgs, execArg)
|
|
}
|
|
return makeOSExecCommand(exec.Command(name, execArgs...)), nil
|
|
}
|
|
|
|
func osFindProcess(args ...tengo.Object) (tengo.Object, error) {
|
|
if len(args) != 1 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
i1, ok := tengo.ToInt(args[0])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "int(compatible)",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
}
|
|
proc, err := os.FindProcess(i1)
|
|
if err != nil {
|
|
return wrapError(err), nil
|
|
}
|
|
return makeOSProcess(proc), nil
|
|
}
|
|
|
|
func osStartProcess(args ...tengo.Object) (tengo.Object, error) {
|
|
if len(args) != 4 {
|
|
return nil, tengo.ErrWrongNumArguments
|
|
}
|
|
name, ok := tengo.ToString(args[0])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "first",
|
|
Expected: "string(compatible)",
|
|
Found: args[0].TypeName(),
|
|
}
|
|
}
|
|
var argv []string
|
|
var err error
|
|
switch arg1 := args[1].(type) {
|
|
case *tengo.Array:
|
|
argv, err = stringArray(arg1.Value, "second")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
case *tengo.ImmutableArray:
|
|
argv, err = stringArray(arg1.Value, "second")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
default:
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "second",
|
|
Expected: "array",
|
|
Found: arg1.TypeName(),
|
|
}
|
|
}
|
|
|
|
dir, ok := tengo.ToString(args[2])
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "third",
|
|
Expected: "string(compatible)",
|
|
Found: args[2].TypeName(),
|
|
}
|
|
}
|
|
|
|
var env []string
|
|
switch arg3 := args[3].(type) {
|
|
case *tengo.Array:
|
|
env, err = stringArray(arg3.Value, "fourth")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
case *tengo.ImmutableArray:
|
|
env, err = stringArray(arg3.Value, "fourth")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
default:
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: "fourth",
|
|
Expected: "array",
|
|
Found: arg3.TypeName(),
|
|
}
|
|
}
|
|
|
|
proc, err := os.StartProcess(name, argv, &os.ProcAttr{
|
|
Dir: dir,
|
|
Env: env,
|
|
})
|
|
if err != nil {
|
|
return wrapError(err), nil
|
|
}
|
|
return makeOSProcess(proc), nil
|
|
}
|
|
|
|
func stringArray(arr []tengo.Object, argName string) ([]string, error) {
|
|
var sarr []string
|
|
for idx, elem := range arr {
|
|
str, ok := elem.(*tengo.String)
|
|
if !ok {
|
|
return nil, tengo.ErrInvalidArgumentType{
|
|
Name: fmt.Sprintf("%s[%d]", argName, idx),
|
|
Expected: "string",
|
|
Found: elem.TypeName(),
|
|
}
|
|
}
|
|
sarr = append(sarr, str.Value)
|
|
}
|
|
return sarr, nil
|
|
}
|