mirror of
https://github.com/cwinfo/matterbridge.git
synced 2024-11-27 02:01:35 +00:00
493 lines
16 KiB
Go
493 lines
16 KiB
Go
package stdlib
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import (
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"os/exec"
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"github.com/d5/tengo"
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"github.com/d5/tengo/objects"
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)
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var osModule = map[string]objects.Object{
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"o_rdonly": &objects.Int{Value: int64(os.O_RDONLY)},
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"o_wronly": &objects.Int{Value: int64(os.O_WRONLY)},
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"o_rdwr": &objects.Int{Value: int64(os.O_RDWR)},
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"o_append": &objects.Int{Value: int64(os.O_APPEND)},
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"o_create": &objects.Int{Value: int64(os.O_CREATE)},
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"o_excl": &objects.Int{Value: int64(os.O_EXCL)},
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"o_sync": &objects.Int{Value: int64(os.O_SYNC)},
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"o_trunc": &objects.Int{Value: int64(os.O_TRUNC)},
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"mode_dir": &objects.Int{Value: int64(os.ModeDir)},
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"mode_append": &objects.Int{Value: int64(os.ModeAppend)},
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"mode_exclusive": &objects.Int{Value: int64(os.ModeExclusive)},
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"mode_temporary": &objects.Int{Value: int64(os.ModeTemporary)},
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"mode_symlink": &objects.Int{Value: int64(os.ModeSymlink)},
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"mode_device": &objects.Int{Value: int64(os.ModeDevice)},
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"mode_named_pipe": &objects.Int{Value: int64(os.ModeNamedPipe)},
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"mode_socket": &objects.Int{Value: int64(os.ModeSocket)},
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"mode_setuid": &objects.Int{Value: int64(os.ModeSetuid)},
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"mode_setgui": &objects.Int{Value: int64(os.ModeSetgid)},
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"mode_char_device": &objects.Int{Value: int64(os.ModeCharDevice)},
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"mode_sticky": &objects.Int{Value: int64(os.ModeSticky)},
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"mode_type": &objects.Int{Value: int64(os.ModeType)},
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"mode_perm": &objects.Int{Value: int64(os.ModePerm)},
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"path_separator": &objects.Char{Value: os.PathSeparator},
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"path_list_separator": &objects.Char{Value: os.PathListSeparator},
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"dev_null": &objects.String{Value: os.DevNull},
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"seek_set": &objects.Int{Value: int64(io.SeekStart)},
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"seek_cur": &objects.Int{Value: int64(io.SeekCurrent)},
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"seek_end": &objects.Int{Value: int64(io.SeekEnd)},
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"args": &objects.UserFunction{Name: "args", Value: osArgs}, // args() => array(string)
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"chdir": &objects.UserFunction{Name: "chdir", Value: FuncASRE(os.Chdir)}, // chdir(dir string) => error
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"chmod": osFuncASFmRE("chmod", os.Chmod), // chmod(name string, mode int) => error
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"chown": &objects.UserFunction{Name: "chown", Value: FuncASIIRE(os.Chown)}, // chown(name string, uid int, gid int) => error
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"clearenv": &objects.UserFunction{Name: "clearenv", Value: FuncAR(os.Clearenv)}, // clearenv()
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"environ": &objects.UserFunction{Name: "environ", Value: FuncARSs(os.Environ)}, // environ() => array(string)
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"exit": &objects.UserFunction{Name: "exit", Value: FuncAIR(os.Exit)}, // exit(code int)
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"expand_env": &objects.UserFunction{Name: "expand_env", Value: osExpandEnv}, // expand_env(s string) => string
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"getegid": &objects.UserFunction{Name: "getegid", Value: FuncARI(os.Getegid)}, // getegid() => int
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"getenv": &objects.UserFunction{Name: "getenv", Value: FuncASRS(os.Getenv)}, // getenv(s string) => string
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"geteuid": &objects.UserFunction{Name: "geteuid", Value: FuncARI(os.Geteuid)}, // geteuid() => int
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"getgid": &objects.UserFunction{Name: "getgid", Value: FuncARI(os.Getgid)}, // getgid() => int
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"getgroups": &objects.UserFunction{Name: "getgroups", Value: FuncARIsE(os.Getgroups)}, // getgroups() => array(string)/error
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"getpagesize": &objects.UserFunction{Name: "getpagesize", Value: FuncARI(os.Getpagesize)}, // getpagesize() => int
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"getpid": &objects.UserFunction{Name: "getpid", Value: FuncARI(os.Getpid)}, // getpid() => int
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"getppid": &objects.UserFunction{Name: "getppid", Value: FuncARI(os.Getppid)}, // getppid() => int
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"getuid": &objects.UserFunction{Name: "getuid", Value: FuncARI(os.Getuid)}, // getuid() => int
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"getwd": &objects.UserFunction{Name: "getwd", Value: FuncARSE(os.Getwd)}, // getwd() => string/error
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"hostname": &objects.UserFunction{Name: "hostname", Value: FuncARSE(os.Hostname)}, // hostname() => string/error
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"lchown": &objects.UserFunction{Name: "lchown", Value: FuncASIIRE(os.Lchown)}, // lchown(name string, uid int, gid int) => error
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"link": &objects.UserFunction{Name: "link", Value: FuncASSRE(os.Link)}, // link(oldname string, newname string) => error
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"lookup_env": &objects.UserFunction{Name: "lookup_env", Value: osLookupEnv}, // lookup_env(key string) => string/false
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"mkdir": osFuncASFmRE("mkdir", os.Mkdir), // mkdir(name string, perm int) => error
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"mkdir_all": osFuncASFmRE("mkdir_all", os.MkdirAll), // mkdir_all(name string, perm int) => error
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"readlink": &objects.UserFunction{Name: "readlink", Value: FuncASRSE(os.Readlink)}, // readlink(name string) => string/error
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"remove": &objects.UserFunction{Name: "remove", Value: FuncASRE(os.Remove)}, // remove(name string) => error
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"remove_all": &objects.UserFunction{Name: "remove_all", Value: FuncASRE(os.RemoveAll)}, // remove_all(name string) => error
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"rename": &objects.UserFunction{Name: "rename", Value: FuncASSRE(os.Rename)}, // rename(oldpath string, newpath string) => error
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"setenv": &objects.UserFunction{Name: "setenv", Value: FuncASSRE(os.Setenv)}, // setenv(key string, value string) => error
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"symlink": &objects.UserFunction{Name: "symlink", Value: FuncASSRE(os.Symlink)}, // symlink(oldname string newname string) => error
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"temp_dir": &objects.UserFunction{Name: "temp_dir", Value: FuncARS(os.TempDir)}, // temp_dir() => string
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"truncate": &objects.UserFunction{Name: "truncate", Value: FuncASI64RE(os.Truncate)}, // truncate(name string, size int) => error
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"unsetenv": &objects.UserFunction{Name: "unsetenv", Value: FuncASRE(os.Unsetenv)}, // unsetenv(key string) => error
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"create": &objects.UserFunction{Name: "create", Value: osCreate}, // create(name string) => imap(file)/error
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"open": &objects.UserFunction{Name: "open", Value: osOpen}, // open(name string) => imap(file)/error
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"open_file": &objects.UserFunction{Name: "open_file", Value: osOpenFile}, // open_file(name string, flag int, perm int) => imap(file)/error
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"find_process": &objects.UserFunction{Name: "find_process", Value: osFindProcess}, // find_process(pid int) => imap(process)/error
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"start_process": &objects.UserFunction{Name: "start_process", Value: osStartProcess}, // start_process(name string, argv array(string), dir string, env array(string)) => imap(process)/error
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"exec_look_path": &objects.UserFunction{Name: "exec_look_path", Value: FuncASRSE(exec.LookPath)}, // exec_look_path(file) => string/error
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"exec": &objects.UserFunction{Name: "exec", Value: osExec}, // exec(name, args...) => command
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"stat": &objects.UserFunction{Name: "stat", Value: osStat}, // stat(name) => imap(fileinfo)/error
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"read_file": &objects.UserFunction{Name: "read_file", Value: osReadFile}, // readfile(name) => array(byte)/error
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}
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func osReadFile(args ...objects.Object) (ret objects.Object, err error) {
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if len(args) != 1 {
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return nil, objects.ErrWrongNumArguments
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}
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fname, ok := objects.ToString(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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}
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bytes, err := ioutil.ReadFile(fname)
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if err != nil {
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return wrapError(err), nil
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}
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if len(bytes) > tengo.MaxBytesLen {
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return nil, objects.ErrBytesLimit
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}
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return &objects.Bytes{Value: bytes}, nil
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}
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func osStat(args ...objects.Object) (ret objects.Object, err error) {
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if len(args) != 1 {
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return nil, objects.ErrWrongNumArguments
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}
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fname, ok := objects.ToString(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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}
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stat, err := os.Stat(fname)
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if err != nil {
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return wrapError(err), nil
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}
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fstat := &objects.ImmutableMap{
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Value: map[string]objects.Object{
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"name": &objects.String{Value: stat.Name()},
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"mtime": &objects.Time{Value: stat.ModTime()},
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"size": &objects.Int{Value: stat.Size()},
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"mode": &objects.Int{Value: int64(stat.Mode())},
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},
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}
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if stat.IsDir() {
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fstat.Value["directory"] = objects.TrueValue
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} else {
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fstat.Value["directory"] = objects.FalseValue
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}
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return fstat, nil
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}
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func osCreate(args ...objects.Object) (objects.Object, error) {
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if len(args) != 1 {
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return nil, objects.ErrWrongNumArguments
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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}
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res, err := os.Create(s1)
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if err != nil {
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return wrapError(err), nil
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}
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return makeOSFile(res), nil
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}
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func osOpen(args ...objects.Object) (objects.Object, error) {
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if len(args) != 1 {
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return nil, objects.ErrWrongNumArguments
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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}
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res, err := os.Open(s1)
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if err != nil {
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return wrapError(err), nil
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}
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return makeOSFile(res), nil
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}
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func osOpenFile(args ...objects.Object) (objects.Object, error) {
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if len(args) != 3 {
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return nil, objects.ErrWrongNumArguments
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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}
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i2, ok := objects.ToInt(args[1])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "second",
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Expected: "int(compatible)",
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Found: args[1].TypeName(),
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}
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}
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i3, ok := objects.ToInt(args[2])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "third",
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Expected: "int(compatible)",
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Found: args[2].TypeName(),
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}
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}
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res, err := os.OpenFile(s1, i2, os.FileMode(i3))
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if err != nil {
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return wrapError(err), nil
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}
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return makeOSFile(res), nil
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}
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func osArgs(args ...objects.Object) (objects.Object, error) {
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if len(args) != 0 {
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return nil, objects.ErrWrongNumArguments
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}
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arr := &objects.Array{}
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for _, osArg := range os.Args {
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if len(osArg) > tengo.MaxStringLen {
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return nil, objects.ErrStringLimit
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}
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arr.Value = append(arr.Value, &objects.String{Value: osArg})
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}
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return arr, nil
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}
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func osFuncASFmRE(name string, fn func(string, os.FileMode) error) *objects.UserFunction {
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return &objects.UserFunction{
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Name: name,
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Value: func(args ...objects.Object) (objects.Object, error) {
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if len(args) != 2 {
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return nil, objects.ErrWrongNumArguments
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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}
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i2, ok := objects.ToInt64(args[1])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "second",
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Expected: "int(compatible)",
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Found: args[1].TypeName(),
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}
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}
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return wrapError(fn(s1, os.FileMode(i2))), nil
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},
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}
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}
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func osLookupEnv(args ...objects.Object) (objects.Object, error) {
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if len(args) != 1 {
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return nil, objects.ErrWrongNumArguments
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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}
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res, ok := os.LookupEnv(s1)
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if !ok {
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return objects.FalseValue, nil
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}
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if len(res) > tengo.MaxStringLen {
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return nil, objects.ErrStringLimit
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}
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return &objects.String{Value: res}, nil
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}
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func osExpandEnv(args ...objects.Object) (objects.Object, error) {
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if len(args) != 1 {
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return nil, objects.ErrWrongNumArguments
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}
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s1, ok := objects.ToString(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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}
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var vlen int
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var failed bool
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s := os.Expand(s1, func(k string) string {
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if failed {
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return ""
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}
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v := os.Getenv(k)
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// this does not count the other texts that are not being replaced
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// but the code checks the final length at the end
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vlen += len(v)
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if vlen > tengo.MaxStringLen {
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failed = true
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return ""
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}
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return v
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})
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if failed || len(s) > tengo.MaxStringLen {
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return nil, objects.ErrStringLimit
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}
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return &objects.String{Value: s}, nil
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}
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func osExec(args ...objects.Object) (objects.Object, error) {
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if len(args) == 0 {
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return nil, objects.ErrWrongNumArguments
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}
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name, ok := objects.ToString(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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}
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var execArgs []string
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for idx, arg := range args[1:] {
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execArg, ok := objects.ToString(arg)
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: fmt.Sprintf("args[%d]", idx),
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Expected: "string(compatible)",
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Found: args[1+idx].TypeName(),
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}
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}
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execArgs = append(execArgs, execArg)
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}
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return makeOSExecCommand(exec.Command(name, execArgs...)), nil
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}
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func osFindProcess(args ...objects.Object) (objects.Object, error) {
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if len(args) != 1 {
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return nil, objects.ErrWrongNumArguments
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}
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i1, ok := objects.ToInt(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "int(compatible)",
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Found: args[0].TypeName(),
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}
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}
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proc, err := os.FindProcess(i1)
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if err != nil {
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return wrapError(err), nil
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}
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return makeOSProcess(proc), nil
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}
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func osStartProcess(args ...objects.Object) (objects.Object, error) {
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if len(args) != 4 {
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return nil, objects.ErrWrongNumArguments
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}
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name, ok := objects.ToString(args[0])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "first",
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Expected: "string(compatible)",
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Found: args[0].TypeName(),
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}
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}
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var argv []string
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var err error
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switch arg1 := args[1].(type) {
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case *objects.Array:
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argv, err = stringArray(arg1.Value, "second")
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if err != nil {
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return nil, err
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}
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case *objects.ImmutableArray:
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argv, err = stringArray(arg1.Value, "second")
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if err != nil {
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return nil, err
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}
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default:
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return nil, objects.ErrInvalidArgumentType{
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Name: "second",
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Expected: "array",
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Found: arg1.TypeName(),
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}
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}
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dir, ok := objects.ToString(args[2])
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if !ok {
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return nil, objects.ErrInvalidArgumentType{
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Name: "third",
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Expected: "string(compatible)",
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Found: args[2].TypeName(),
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}
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}
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var env []string
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switch arg3 := args[3].(type) {
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case *objects.Array:
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env, err = stringArray(arg3.Value, "fourth")
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if err != nil {
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return nil, err
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}
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case *objects.ImmutableArray:
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env, err = stringArray(arg3.Value, "fourth")
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if err != nil {
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return nil, err
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}
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default:
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return nil, objects.ErrInvalidArgumentType{
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Name: "fourth",
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Expected: "array",
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Found: arg3.TypeName(),
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}
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}
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proc, err := os.StartProcess(name, argv, &os.ProcAttr{
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Dir: dir,
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Env: env,
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})
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if err != nil {
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return wrapError(err), nil
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}
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return makeOSProcess(proc), nil
|
|
}
|
|
|
|
func stringArray(arr []objects.Object, argName string) ([]string, error) {
|
|
var sarr []string
|
|
for idx, elem := range arr {
|
|
str, ok := elem.(*objects.String)
|
|
if !ok {
|
|
return nil, objects.ErrInvalidArgumentType{
|
|
Name: fmt.Sprintf("%s[%d]", argName, idx),
|
|
Expected: "string",
|
|
Found: elem.TypeName(),
|
|
}
|
|
}
|
|
|
|
sarr = append(sarr, str.Value)
|
|
}
|
|
|
|
return sarr, nil
|
|
}
|