标签：errors return string hwlog -- sp validators go constants

// Copyright (c) 2021. Huawei Technologies Co., Ltd. All rights reserved.

// Package common this file common validators
package common

import (
   "crypto/tls"
   "errors"
   "net"
   "regexp"
   "time"

   "huawei.com/npu-exporter/hwlog"
   "huawei.com/npu-exporter/utils"

   "huawei.com/mindxdl/base/common/constants"
)

const (
   portLowerLimit    = 1025
   portUpperLimit    = 40000
   nameMaxLength     = 63
   nameMinLength     = 3
   serviceLogMaxSize = 200
   nameFormat        = `^[a-z0-9]+[a-z0-9-]*[a-z0-9]+$`
)

// ServerParam ServerParam
type ServerParam struct {
   IP               string
   Port             int
   Version          bool
   Concurrency      int
   MaxConcurrency   int
   EnableHTTP       bool
   EncryptAlgorithm int
   TLSSuites        int
   CipherSuites     []uint16
   AuthMode         string
   OverdueTime      int
   CheckCertPeriod  time.Duration
   DNSName          string
   DirName          string
   ReadTimeOut      time.Duration
   WriteTimeOut     time.Duration
}

// GetDefaultServiceParam get default service param
func GetDefaultServiceParam() *ServerParam {
   return &ServerParam{
      MaxConcurrency:  MaxConcurrency,
      CheckCertPeriod: time.Hour,
      AuthMode:        TwoWay,
      OverdueTime:     utils.OverdueTime,
      ReadTimeOut:     HTTPServerTimeout,
      WriteTimeOut:    HTTPServerTimeout,
   }
}

// WebParamValid doing param check
func WebParamValid(sp *ServerParam) error {
   if sp.Port < portLowerLimit || sp.Port > portUpperLimit {
      return errors.New("the port is invalid")
   }
   parsedIP := net.ParseIP(sp.IP)
   if parsedIP == nil {
      return errors.New("the listen ip is invalid")
   }
   sp.IP = parsedIP.String()
   hwlog.RunLog.Infof("listen on: %s", sp.IP)

   return nil
}

// ParseTLSParams ParseTLSParams
func ParseTLSParams(sp *ServerParam) {
   if sp.EncryptAlgorithm != utils.Aes128gcm && sp.EncryptAlgorithm != utils.Aes256gcm {
      hwlog.RunLog.Warn("reset invalid encryptAlgorithm = 9")
      sp.EncryptAlgorithm = utils.Aes256gcm
   }
   if sp.TLSSuites != 0 && sp.TLSSuites != 1 {
      hwlog.RunLog.Warn("reset invalid tlsSuites = 1")
      sp.TLSSuites = 1
   }
   if sp.TLSSuites == 0 {
      sp.CipherSuites = []uint16{tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256}
   } else {
      sp.CipherSuites = []uint16{tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256}
   }
}

// ValidName valid pod name or namespace
func ValidName(nameType, name string, b BaseCtx) bool {
   if name == "" {
      hwlog.RunLog.ErrorfWithCtx(b.Ctx, "%s is empty.", nameType)
      return false
   }
   array := []rune(name)
   if len(array) > nameMaxLength || len(array) < nameMinLength {
      hwlog.RunLog.ErrorfWithCtx(b.Ctx, "%s length (%v) invalid.", nameType, len(array))
      return false
   }
   var reg = regexp.MustCompile(nameFormat)
   ok := reg.MatchString(name)
   if !ok {
      hwlog.RunLog.ErrorfWithCtx(b.Ctx, "%s is not meet requirement.", nameType)
      return false
   }
   return true
}

func validLogLimitOffset(logOffset, logLimit uint64) error {
   if logLimit > serviceLogMaxSize {
      return errors.New("too large of limit")
   }
   if logOffset < 0 {
      return errors.New("offset is less than 0")
   }
   return nil
}

// CheckString check string
func CheckString(passString string) error {
   if matched, err := regexp.MatchString(constants.PassRegex, passString); err != nil || !matched {
      return errors.New("password MatchString failed")
   }

   complexCheckRegexArr := []string{
      constants.LowercaseCharactersRegex,
      constants.UppercaseCharactersRegex,
      constants.BaseNumberRegex,
      constants.SpecialCharactersRegex,
   }
   complexCount := 0
   for _, pattern := range complexCheckRegexArr {
      if matched, err := regexp.MatchString(pattern, passString); matched && err == nil {
         complexCount++
      }
   }
   if complexCount < constants.MinComplexCount {
      return errors.New("password complexCheck failed")
   }
   return nil
}

标签：errors,return,string,hwlog,--,sp,validators,go,constants
来源： https://www.cnblogs.com/gongxianjin/p/16683181.html

本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；
2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；
3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；
4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；
5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。