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79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
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package serverconfigs
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import (
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"regexp"
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"strings"
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)
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type HTTPRemoteAddrType = string
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const (
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HTTPRemoteAddrTypeDefault HTTPRemoteAddrType = "default" // 默认（直连）
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HTTPRemoteAddrTypeProxy HTTPRemoteAddrType = "proxy" // 代理
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HTTPRemoteAddrTypeRequestHeader HTTPRemoteAddrType = "requestHeader" // 请求报头
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HTTPRemoteAddrTypeVariable HTTPRemoteAddrType = "variable" // 变量
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)
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// HTTPRemoteAddrConfig HTTP获取客户端IP地址方式
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type HTTPRemoteAddrConfig struct {
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IsPrior bool `yaml:"isPrior" json:"isPrior"`
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IsOn bool `yaml:"isOn" json:"isOn"`
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Value string `yaml:"value" json:"value"` // 值变量
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Type HTTPRemoteAddrType `yaml:"type" json:"type"` // 类型
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RequestHeaderName string `yaml:"requestHeaderName" json:"requestHeaderName"` // 请求报头名称（type = requestHeader时生效）
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isEmpty bool
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values []string
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hasValues bool
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}
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// Init 初始化
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func (this *HTTPRemoteAddrConfig) Init() error {
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this.Value = strings.TrimSpace(this.Value)
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this.isEmpty = false
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if len(this.Value) == 0 {
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this.isEmpty = true
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} else if regexp.MustCompile(`\s+`).ReplaceAllString(this.Value, "") == "${remoteAddr}" {
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this.isEmpty = true
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}
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// values
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this.values = []string{}
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var headerVarReg = regexp.MustCompile(`(\$\{header\.)([\w-,]+)(})`)
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if headerVarReg.MatchString(this.Value) {
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var subMatches = headerVarReg.FindStringSubmatch(this.Value)
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if len(subMatches) > 3 {
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var prefix = subMatches[1]
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var headerNamesString = subMatches[2]
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var suffix = subMatches[3]
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for _, headerName := range strings.Split(headerNamesString, ",") {
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headerName = strings.TrimSpace(headerName)
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if len(headerName) > 0 {
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this.values = append(this.values, prefix+headerName+suffix)
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}
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}
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}
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}
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this.hasValues = len(this.values) > 1 // MUST be 1, not 0
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return nil
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}
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// IsEmpty 是否为空
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func (this *HTTPRemoteAddrConfig) IsEmpty() bool {
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return this.isEmpty
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}
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// Values 可能的值变量
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func (this *HTTPRemoteAddrConfig) Values() []string {
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return this.values
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}
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// HasValues 检查是否有一组值
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func (this *HTTPRemoteAddrConfig) HasValues() bool {
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return this.hasValues
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}
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