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location.go
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location.go
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package teaconfigs
import (
"fmt"
"github.com/TeaWeb/code/teaconfigs/shared"
"github.com/TeaWeb/code/teautils"
"github.com/TeaWeb/code/teawaf"
"github.com/iwind/TeaGo/utils/string"
"net/http"
"regexp"
"strings"
)
// 路径配置
type LocationConfig struct {
shared.HeaderList `yaml:",inline"`
FastcgiList `yaml:",inline"`
RewriteList `yaml:",inline"`
BackendList `yaml:",inline"`
On bool `yaml:"on" json:"on"` // 是否开启
Id string `yaml:"id" json:"id"` // ID
Name string `yaml:"name" json:"name"` // 名称
Pattern string `yaml:"pattern" json:"pattern"` // 匹配规则
Async bool `yaml:"async" json:"async"` // 是否异步请求 @TODO
Notify []interface{} `yaml:"notify" json:"notify"` // 转发请求,可以配置转发策略 @TODO
LogOnly bool `yaml:"logOnly" json:"logOnly"` // 是否只记录日志 @TODO
URLPrefix string `yaml:"urlPrefix" json:"urlPrefix"` // 实际的URL前缀,目前和资源根目录配合使用
Root string `yaml:"root" json:"root"` // 资源根目录
Index []string `yaml:"index" json:"index"` // 默认文件
Charset string `yaml:"charset" json:"charset"` // 字符集设置
MaxBodySize string `yaml:"maxBodySize" json:"maxBodySize"` // 请求body最大尺寸
GzipLevel1 int8 `yaml:"gzipLevel" json:"gzipLevel"` // deprecated v0.1.8 Gzip压缩级别
GzipMinLength1 string `yaml:"gzipMinLength" json:"gzipMinLength"` // deprecated v0.1.8 需要压缩的最小内容尺寸
Gzip *GzipConfig `yaml:"gzip" json:"gzip"`
AccessPolicy *shared.AccessPolicy `yaml:"accessPolicy" json:"accessPolicy"` // 访问控制
RedirectToHttps bool `yaml:"redirectToHttps" json:"redirectToHttps"` // 是否自动跳转到Https
// 日志
AccessLog []*AccessLogConfig `yaml:"accessLog" json:"accessLog"` // 访问日志设置,如果为空表示继承上一级设置
DisableAccessLog1 bool `yaml:"disableAccessLog" json:"disableAccessLog"` // deprecated: 是否禁用访问日志
AccessLogFields1 []int `yaml:"accessLogFields" json:"accessLogFields"` // deprecated: 访问日志保留的字段,如果为nil,则表示没有设置
DisableStat bool `yaml:"disableStat" json:"disableStat"` // 是否禁用统计
// 参考:http://nginx.org/en/docs/http/ngx_http_access_module.html
Allow []string `yaml:"allow" json:"allow"` // 允许的终端地址 @TODO
Deny []string `yaml:"deny" json:"deny"` // 禁止的终端地址 @TODO
Proxy string `yaml:"proxy" json:"proxy"` // 代理配置 @TODO
CachePolicy string `yaml:"cachePolicy" json:"cachePolicy"` // 缓存策略
CacheOn bool `yaml:"cacheOn" json:"cacheOn"` // 缓存是否打开
cachePolicy *shared.CachePolicy
WAFOn bool `yaml:"wafOn" json:"wafOn"` // 是否启用
WafId string `yaml:"wafId" json:"wafId"` // WAF ID
waf *teawaf.WAF // waf object
// websocket设置
Websocket *WebsocketConfig `yaml:"websocket" json:"websocket"`
// 开启的条件
// 语法为:cond param operator value 比如:
// - cond ${status} gte 200
// - cond ${arg.name} eq lily
// - cond ${requestPath} regexp .*\.png
Cond []*shared.RequestCond `yaml:"cond" json:"cond"`
// 禁止访问的条件
DenyCond []*shared.RequestCond `yaml:"denyCond" json:"denyCond"`
DenyAll bool `yaml:"denyAll" json:"denyAll"`
IsBreak bool `yaml:"isBreak" json:"isBreak"` // 终止向下解析
Pages []*PageConfig `yaml:"pages" json:"pages"` // 特殊页
Shutdown *ShutdownConfig `yaml:"shutdown" json:"shutdown"` // 关闭页
ShutdownPageOn1 bool `yaml:"shutdownPageOn" json:"shutdownPageOn"` // deprecated: v0.1.8, 是否开启临时关闭页面
ShutdownPage1 string `yaml:"shutdownPage" json:"shutdownPage"` // deprecated: v0.1.8, 临时关闭页面
// 请求分组(从server复制而来)
requestGroups []*RequestGroup
defaultRequestGroup *RequestGroup
hasRequestGroupFilters bool
maxBodySize int64
patternType LocationPatternType // 规则类型:LocationPattern*
prefix string // 前缀
path string // 精确的路径
reg *regexp.Regexp // 匹配规则
caseInsensitive bool // 大小写不敏感
reverse bool // 是否翻转规则,比如非前缀,非路径
}
// 获取新对象
func NewLocation() *LocationConfig {
return &LocationConfig{
On: true,
Id: stringutil.Rand(16),
CacheOn: true,
WAFOn: true,
}
}
// 校验
func (this *LocationConfig) Validate() error {
// 最大Body尺寸
maxBodySize, _ := stringutil.ParseFileSize(this.MaxBodySize)
this.maxBodySize = int64(maxBodySize)
// gzip
if this.Gzip != nil {
err := this.Gzip.Validate()
if err != nil {
return err
}
}
// 分析pattern
this.reverse = false
this.caseInsensitive = false
if len(this.Pattern) > 0 {
spaceIndex := strings.Index(this.Pattern, " ")
if spaceIndex < 0 {
this.patternType = LocationPatternTypePrefix
this.prefix = this.Pattern
} else {
cmd := this.Pattern[:spaceIndex]
pattern := strings.TrimSpace(this.Pattern[spaceIndex+1:])
if cmd == "*" { // 大小写非敏感
this.patternType = LocationPatternTypePrefix
this.prefix = pattern
this.caseInsensitive = true
} else if cmd == "!*" { // 大小写非敏感,翻转
this.patternType = LocationPatternTypePrefix
this.prefix = pattern
this.caseInsensitive = true
this.reverse = true
} else if cmd == "!" {
this.patternType = LocationPatternTypePrefix
this.prefix = pattern
this.reverse = true
} else if cmd == "=" {
this.patternType = LocationPatternTypeExact
this.path = pattern
} else if cmd == "=*" {
this.patternType = LocationPatternTypeExact
this.path = pattern
this.caseInsensitive = true
} else if cmd == "!=" {
this.patternType = LocationPatternTypeExact
this.path = pattern
this.reverse = true
} else if cmd == "!=*" {
this.patternType = LocationPatternTypeExact
this.path = pattern
this.reverse = true
this.caseInsensitive = true
} else if cmd == "~" { // 正则
this.patternType = LocationPatternTypeRegexp
reg, err := regexp.Compile(pattern)
if err != nil {
return err
}
this.reg = reg
this.path = pattern
} else if cmd == "!~" {
this.patternType = LocationPatternTypeRegexp
reg, err := regexp.Compile(pattern)
if err != nil {
return err
}
this.reg = reg
this.reverse = true
this.path = pattern
} else if cmd == "~*" { // 大小写非敏感小写
this.patternType = LocationPatternTypeRegexp
reg, err := regexp.Compile("(?i)" + pattern)
if err != nil {
return err
}
this.reg = reg
this.caseInsensitive = true
this.path = pattern
} else if cmd == "!~*" {
this.patternType = LocationPatternTypeRegexp
reg, err := regexp.Compile("(?i)" + pattern)
if err != nil {
return err
}
this.reg = reg
this.reverse = true
this.caseInsensitive = true
this.path = pattern
} else {
this.patternType = LocationPatternTypePrefix
this.prefix = pattern
}
}
} else {
this.patternType = LocationPatternTypePrefix
this.prefix = this.Pattern
}
// 校验缓存配置
if len(this.CachePolicy) > 0 {
policy := shared.NewCachePolicyFromFile(this.CachePolicy)
if policy != nil {
err := policy.Validate()
if err != nil {
return err
}
this.cachePolicy = policy
}
}
// waf
if len(this.WafId) > 0 && this.WAFOn {
waf := SharedWAFList().FindWAF(this.WafId)
if waf != nil {
err := waf.Init()
if err != nil {
return err
}
this.waf = waf
}
}
// 校验访问控制
if this.AccessPolicy != nil {
err := this.AccessPolicy.Validate()
if err != nil {
return err
}
}
// 校验RewriteRule配置
err := this.ValidateRewriteRules()
if err != nil {
return err
}
// 校验Fastcgi配置
err = this.ValidateFastcgi()
if err != nil {
return err
}
// 校验Header
err = this.ValidateHeaders()
if err != nil {
return err
}
//websocket
if this.Websocket != nil {
err = this.Websocket.Validate()
if err != nil {
return err
}
}
// backend
err = this.ValidateBackends()
if err != nil {
return err
}
// 校验条件
for _, cond := range this.Cond {
err := cond.Validate()
if err != nil {
return err
}
}
for _, cond := range this.DenyCond {
err := cond.Validate()
if err != nil {
return err
}
}
// request groups
for _, group := range this.requestGroups {
group.Backends = []*BackendConfig{}
group.Scheduling = this.Scheduling
if group.IsDefault {
this.defaultRequestGroup = group
}
for _, backend := range this.Backends {
if len(backend.RequestGroupIds) == 0 && group.Id == "default" {
group.AddBackend(backend)
} else if backend.HasRequestGroupId(group.Id) {
group.AddBackend(backend)
}
}
err := group.Validate()
if err != nil {
return err
}
if group.HasFilters() {
this.hasRequestGroupFilters = true
}
}
// pages
for _, page := range this.Pages {
err := page.Validate()
if err != nil {
return err
}
}
// shutdown
if this.Shutdown != nil {
err = this.Shutdown.Validate()
if err != nil {
return err
}
}
return nil
}
// 兼容性设置
func (this *LocationConfig) Compatible(version string) {
if len(version) == 0 {
this.CacheOn = true
this.WAFOn = true
} else if stringutil.VersionCompare(version, "0.1.3") < 0 {
this.CacheOn = true
this.WAFOn = true
} else if stringutil.VersionCompare(version, "0.1.5") <= 0 {
if len(this.AccessLog) == 0 && this.DisableAccessLog1 {
this.AccessLog = []*AccessLogConfig{
{
Id: stringutil.Rand(16),
On: !this.DisableAccessLog1,
Fields: this.AccessLogFields1,
Status1: true,
Status2: true,
Status3: true,
Status4: true,
Status5: true,
},
}
}
} else if stringutil.VersionCompare(version, "0.1.8") < 0 {
// gzip
if this.GzipLevel1 >= 0 {
this.Gzip = &GzipConfig{
Level: this.GzipLevel1,
MinLength: this.GzipMinLength1,
}
this.GzipLevel1 = 0
}
// pages
for _, page := range this.Pages {
page.NewStatus = 200
}
// shutdown
if this.ShutdownPageOn1 {
shutdown := NewShutdownConfig()
shutdown.On = true
shutdown.URL = this.ShutdownPage1
shutdown.Status = 200
this.Shutdown = shutdown
}
}
}
// 最大Body尺寸
func (this *LocationConfig) MaxBodyBytes() int64 {
return this.maxBodySize
}
// 模式类型
func (this *LocationConfig) PatternType() int {
return this.patternType
}
// 模式字符串
// 去掉了模式字符
func (this *LocationConfig) PatternString() string {
if this.patternType == LocationPatternTypePrefix {
return this.prefix
}
return this.path
}
// 是否翻转
func (this *LocationConfig) IsReverse() bool {
return this.reverse
}
// 是否大小写非敏感
func (this *LocationConfig) IsCaseInsensitive() bool {
return this.caseInsensitive
}
// 判断是否匹配路径
func (this *LocationConfig) Match(path string, formatter func(source string) string) (vars map[string]string, isMatched bool) {
// 判断条件
if len(this.Cond) > 0 {
for _, cond := range this.Cond {
if !cond.Match(formatter) {
return nil, false
}
}
}
if this.patternType == LocationPatternTypePrefix {
if this.reverse {
if this.caseInsensitive {
return nil, !strings.HasPrefix(strings.ToLower(path), strings.ToLower(this.prefix))
} else {
return nil, !strings.HasPrefix(path, this.prefix)
}
} else {
if this.caseInsensitive {
return nil, strings.HasPrefix(strings.ToLower(path), strings.ToLower(this.prefix))
} else {
return nil, strings.HasPrefix(path, this.prefix)
}
}
}
if this.patternType == LocationPatternTypeExact {
if this.reverse {
if this.caseInsensitive {
return nil, strings.ToLower(path) != strings.ToLower(this.path)
} else {
return nil, path != this.path
}
} else {
if this.caseInsensitive {
return nil, strings.ToLower(path) == strings.ToLower(this.path)
} else {
return nil, path == this.path
}
}
}
if this.patternType == LocationPatternTypeRegexp {
if this.reg != nil {
if this.reverse {
return nil, !this.reg.MatchString(path)
} else {
b := this.reg.MatchString(path)
if b {
result := map[string]string{}
matches := this.reg.FindStringSubmatch(path)
subNames := this.reg.SubexpNames()
for index, value := range matches {
result[fmt.Sprintf("%d", index)] = value
subName := subNames[index]
if len(subName) > 0 {
result[subName] = value
}
}
return result, true
}
return nil, b
}
}
return nil, this.reverse
}
return nil, false
}
// 判断是否屏蔽
func (this *LocationConfig) IsDenied(formatter func(source string) string) bool {
if this.DenyAll {
return true
}
if len(this.DenyCond) > 0 {
for _, cond := range this.DenyCond {
if cond.Match(formatter) {
return true
}
}
}
return false
}
// 组合参数为一个字符串
func (this *LocationConfig) SetPattern(pattern string, patternType int, caseInsensitive bool, reverse bool) {
op := ""
if patternType == LocationPatternTypePrefix {
if caseInsensitive {
op = "*"
if reverse {
op = "!*"
}
} else {
if reverse {
op = "!"
}
}
} else if patternType == LocationPatternTypeExact {
op = "="
if caseInsensitive {
op += "*"
}
if reverse {
op = "!" + op
}
} else if patternType == LocationPatternTypeRegexp {
op = "~"
if caseInsensitive {
op += "*"
}
if reverse {
op = "!" + op
}
}
if len(op) > 0 {
pattern = op + " " + pattern
}
this.Pattern = pattern
}
// 缓存策略
func (this *LocationConfig) CachePolicyObject() *shared.CachePolicy {
return this.cachePolicy
}
// WAF
func (this *LocationConfig) WAF() *teawaf.WAF {
return this.waf
}
// 是否在引用某个代理
func (this *LocationConfig) RefersProxy(proxyId string) bool {
if this.Proxy == proxyId {
return true
}
for _, r := range this.Rewrite {
if r.RefersProxy(proxyId) {
return true
}
}
return false
}
// 添加过滤条件
func (this *LocationConfig) AddCond(cond *shared.RequestCond) {
this.Cond = append(this.Cond, cond)
}
// 添加请求分组
func (this *LocationConfig) AddRequestGroup(group *RequestGroup) {
this.requestGroups = append(this.requestGroups, group)
if this.Websocket != nil {
this.Websocket.AddRequestGroup(group.Copy())
}
}
// 使用请求匹配分组
func (this *LocationConfig) MatchRequestGroup(formatter func(source string) string) *RequestGroup {
if !this.hasRequestGroupFilters {
return nil
}
for _, group := range this.requestGroups {
if group.HasFilters() && group.Match(formatter) {
return group
}
}
return nil
}
// 取得下一个可用的后端服务
func (this *LocationConfig) NextBackend(call *shared.RequestCall) *BackendConfig {
if this.hasRequestGroupFilters {
group := this.MatchRequestGroup(call.Formatter)
if group != nil {
// request
if group.HasRequestHeaders() {
for _, h := range group.RequestHeaders {
call.Request.Header.Set(h.Name, call.Formatter(h.Value))
}
}
// response
if group.HasResponseHeaders() {
call.AddResponseCall(func(resp http.ResponseWriter) {
for _, h := range group.ResponseHeaders {
resp.Header().Set(h.Name, call.Formatter(h.Value))
}
})
}
return group.BackendList.NextBackend(call)
}
}
// 默认分组
if this.defaultRequestGroup != nil {
// request
if this.defaultRequestGroup.HasRequestHeaders() {
for _, h := range this.defaultRequestGroup.RequestHeaders {
call.Request.Header.Set(h.Name, call.Formatter(h.Value))
}
}
// response
if this.defaultRequestGroup.HasResponseHeaders() {
call.AddResponseCall(func(resp http.ResponseWriter) {
for _, h := range this.defaultRequestGroup.ResponseHeaders {
resp.Header().Set(h.Name, call.Formatter(h.Value))
}
})
}
return this.defaultRequestGroup.NextBackend(call)
}
return this.BackendList.NextBackend(call)
}
// 设置调度算法
func (this *LocationConfig) SetupScheduling(isBackup bool) {
for _, group := range this.requestGroups {
group.SetupScheduling(isBackup)
}
this.BackendList.SetupScheduling(isBackup)
}
// 装载事件
func (this *LocationConfig) OnAttach() {
// 开启WAF
if this.waf != nil {
this.waf.Start()
}
}
// 卸载事件
func (this *LocationConfig) OnDetach() {
if this.Websocket != nil {
this.Websocket.OnDetach()
}
// 停止WAF
if this.waf != nil {
this.waf.Stop()
this.waf = nil
}
}
// 克隆运行时状态
func (this *LocationConfig) CloneState(oldLocation *LocationConfig) {
if oldLocation == nil {
return
}
// backends
for _, backend := range this.Backends {
oldBackend := oldLocation.FindBackend(backend.Id)
if oldBackend == nil {
continue
}
backend.CloneState(oldBackend)
}
// websocket
if this.Websocket != nil && oldLocation.Websocket != nil {
this.Websocket.CloneState(oldLocation.Websocket)
}
}
// 添加Page
func (this *LocationConfig) AddPage(page *PageConfig) {
this.Pages = append(this.Pages, page)
}
// 匹配关键词
func (this *LocationConfig) MatchKeyword(keyword string) (matched bool, name string, tags []string) {
if teautils.MatchKeyword(this.Name, keyword) || teautils.MatchKeyword(this.Pattern, keyword) {
matched = true
name = this.Pattern
if len(this.Name) > 0 {
tags = []string{this.Name}
}
return
}
return
}