github.com/greenpau/go-authcrunch@v1.1.4/pkg/acl/sanitize.go (about)

     1  // Copyright 2022 Paul Greenberg greenpau@outlook.com
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package acl
    16  
    17  import (
    18  	"strings"
    19  )
    20  
    21  func sanitize(m map[string]interface{}) map[string]interface{} {
    22  	out := make(map[string]interface{})
    23  	for k, v := range m {
    24  		switch val := v.(type) {
    25  		case string:
    26  			out[k] = sanitizeStr(k, val)
    27  		case map[string]interface{}:
    28  			out[k] = sanitize(val)
    29  		case []interface{}:
    30  			var entries []string
    31  			for _, entry := range val {
    32  				switch s := entry.(type) {
    33  				case string:
    34  					entries = append(entries, sanitizeStr(k, s))
    35  				}
    36  			}
    37  			if len(entries) > 0 {
    38  				out[k] = entries
    39  			} else {
    40  				out[k] = v
    41  			}
    42  		default:
    43  			out[k] = v
    44  		}
    45  	}
    46  	return out
    47  }
    48  
    49  func sanitizeStr(k, s string) string {
    50  	switch k {
    51  	case "password", "secret", "old_password":
    52  		return "***masked***"
    53  	}
    54  	s = strings.ReplaceAll(s, "\n", "")
    55  	s = strings.ReplaceAll(s, "\r", "")
    56  	s = strings.ReplaceAll(s, "http://", "hxxp://")
    57  	s = strings.ReplaceAll(s, "https://", "hxxps://")
    58  	if len(s) > 255 {
    59  		s = string(s[:254])
    60  	}
    61  	return s
    62  }