package opts import ( "fmt" "net" "os" "path/filepath" "regexp" "strings" "github.com/docker/docker/api" flag "github.com/docker/docker/pkg/mflag" "github.com/docker/docker/pkg/parsers" ) func ListVar(values *[]string, names []string, usage string) { flag.Var(newListOptsRef(values, nil), names, usage) } func HostListVar(values *[]string, names []string, usage string) { flag.Var(newListOptsRef(values, api.ValidateHost), names, usage) } func IPListVar(values *[]string, names []string, usage string) { flag.Var(newListOptsRef(values, ValidateIPAddress), names, usage) } func DnsSearchListVar(values *[]string, names []string, usage string) { flag.Var(newListOptsRef(values, ValidateDnsSearch), names, usage) } func IPVar(value *net.IP, names []string, defaultValue, usage string) { flag.Var(NewIpOpt(value, defaultValue), names, usage) } // ListOpts type type ListOpts struct { values *[]string validator ValidatorFctType } func NewListOpts(validator ValidatorFctType) ListOpts { var values []string return *newListOptsRef(&values, validator) } func newListOptsRef(values *[]string, validator ValidatorFctType) *ListOpts { return &ListOpts{ values: values, validator: validator, } } func (opts *ListOpts) String() string { return fmt.Sprintf("%v", []string((*opts.values))) } // Set validates if needed the input value and add it to the // internal slice. func (opts *ListOpts) Set(value string) error { if opts.validator != nil { v, err := opts.validator(value) if err != nil { return err } value = v } (*opts.values) = append((*opts.values), value) return nil } // Delete remove the given element from the slice. func (opts *ListOpts) Delete(key string) { for i, k := range *opts.values { if k == key { (*opts.values) = append((*opts.values)[:i], (*opts.values)[i+1:]...) return } } } // GetMap returns the content of values in a map in order to avoid // duplicates. // FIXME: can we remove this? func (opts *ListOpts) GetMap() map[string]struct{} { ret := make(map[string]struct{}) for _, k := range *opts.values { ret[k] = struct{}{} } return ret } // GetAll returns the values' slice. // FIXME: Can we remove this? func (opts *ListOpts) GetAll() []string { return (*opts.values) } // Get checks the existence of the given key. func (opts *ListOpts) Get(key string) bool { for _, k := range *opts.values { if k == key { return true } } return false } // Len returns the amount of element in the slice. func (opts *ListOpts) Len() int { return len((*opts.values)) } // Validators type ValidatorFctType func(val string) (string, error) func ValidateAttach(val string) (string, error) { s := strings.ToLower(val) for _, str := range []string{"stdin", "stdout", "stderr"} { if s == str { return s, nil } } return val, fmt.Errorf("valid streams are STDIN, STDOUT and STDERR.") } func ValidateLink(val string) (string, error) { if _, err := parsers.PartParser("name:alias", val); err != nil { return val, err } return val, nil } func ValidatePath(val string) (string, error) { var containerPath string if strings.Count(val, ":") > 2 { return val, fmt.Errorf("bad format for volumes: %s", val) } splited := strings.SplitN(val, ":", 2) if len(splited) == 1 { containerPath = splited[0] val = filepath.Clean(splited[0]) } else { containerPath = splited[1] val = fmt.Sprintf("%s:%s", splited[0], filepath.Clean(splited[1])) } if !filepath.IsAbs(containerPath) { return val, fmt.Errorf("%s is not an absolute path", containerPath) } return val, nil } func ValidateEnv(val string) (string, error) { arr := strings.Split(val, "=") if len(arr) > 1 { return val, nil } return fmt.Sprintf("%s=%s", val, os.Getenv(val)), nil } func ValidateIPAddress(val string) (string, error) { var ip = net.ParseIP(strings.TrimSpace(val)) if ip != nil { return ip.String(), nil } return "", fmt.Errorf("%s is not an ip address", val) } // Validates domain for resolvconf search configuration. // A zero length domain is represented by . func ValidateDnsSearch(val string) (string, error) { if val = strings.Trim(val, " "); val == "." { return val, nil } return validateDomain(val) } func validateDomain(val string) (string, error) { alpha := regexp.MustCompile(`[a-zA-Z]`) if alpha.FindString(val) == "" { return "", fmt.Errorf("%s is not a valid domain", val) } re := regexp.MustCompile(`^(:?(:?[a-zA-Z0-9]|(:?[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9]))(:?\.(:?[a-zA-Z0-9]|(:?[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])))*)\.?\s*$`) ns := re.FindSubmatch([]byte(val)) if len(ns) > 0 { return string(ns[1]), nil } return "", fmt.Errorf("%s is not a valid domain", val) }