VariableContext → Context VariableStore → Store ReleaseVariableContext → ReleaseContext (别名保留向后兼容) 提取硬编码字符串为命名常量 sslProtocolNone Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
292 lines
7.7 KiB
Go
292 lines
7.7 KiB
Go
// Package variable 提供 SSL/TLS 相关变量。
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//
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// 该文件包含 mTLS 客户端证书变量,用于日志和访问控制:
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// - $ssl_client_verify: 客户端证书验证结果
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// - $ssl_client_serial: 客户端证书序列号
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// - $ssl_client_subject: 客户端证书主题
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// - $ssl_client_issuer: 客户端证书颁发者
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// - $ssl_client_fingerprint: 客户端证书指纹
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// - $ssl_client_notbefore: 证书生效时间
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// - $ssl_client_notafter: 证书过期时间
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//
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// 作者:xfy
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package variable
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import (
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"crypto/tls"
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"encoding/pem"
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"fmt"
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"github.com/valyala/fasthttp"
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)
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// SSL 变量常量
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const (
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VarSSLClientVerify = "ssl_client_verify"
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VarSSLClientSerial = "ssl_client_serial"
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VarSSLClientSubject = "ssl_client_subject"
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VarSSLClientIssuer = "ssl_client_issuer"
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VarSSLClientFingerprint = "ssl_client_fingerprint"
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VarSSLClientNotBefore = "ssl_client_notbefore"
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VarSSLClientNotAfter = "ssl_client_notafter"
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VarSSLClientDNS = "ssl_client_s_dn"
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VarSSLClientEmail = "ssl_client_email"
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sslProtocolNone = "NONE"
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)
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// init 注册 SSL 变量
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func init() {
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// $ssl_client_verify - 客户端证书验证结果
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RegisterBuiltin(&BuiltinVariable{
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Name: VarSSLClientVerify,
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Description: "客户端证书验证结果 (SUCCESS/FAIL/NONE)",
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Getter: func(ctx *fasthttp.RequestCtx) string {
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return GetSSLClientVerify(ctx)
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},
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})
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// $ssl_client_serial - 客户端证书序列号
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RegisterBuiltin(&BuiltinVariable{
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Name: VarSSLClientSerial,
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Description: "客户端证书序列号",
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Getter: func(ctx *fasthttp.RequestCtx) string {
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return GetSSLClientSerial(ctx)
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},
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})
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// $ssl_client_subject - 客户端证书主题
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RegisterBuiltin(&BuiltinVariable{
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Name: VarSSLClientSubject,
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Description: "客户端证书主题 (DN)",
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Getter: func(ctx *fasthttp.RequestCtx) string {
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return GetSSLClientSubject(ctx)
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},
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})
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// $ssl_client_issuer - 客户端证书颁发者
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RegisterBuiltin(&BuiltinVariable{
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Name: VarSSLClientIssuer,
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Description: "客户端证书颁发者 (DN)",
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Getter: func(ctx *fasthttp.RequestCtx) string {
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return GetSSLClientIssuer(ctx)
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},
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})
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// $ssl_client_fingerprint - 客户端证书指纹
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RegisterBuiltin(&BuiltinVariable{
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Name: VarSSLClientFingerprint,
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Description: "客户端证书 SHA1 指纹",
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Getter: func(ctx *fasthttp.RequestCtx) string {
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return GetSSLClientFingerprint(ctx)
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},
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})
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// $ssl_client_notbefore - 证书生效时间
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RegisterBuiltin(&BuiltinVariable{
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Name: VarSSLClientNotBefore,
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Description: "客户端证书生效时间 (ISO8601)",
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Getter: func(ctx *fasthttp.RequestCtx) string {
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return GetSSLClientNotBefore(ctx)
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},
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})
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// $ssl_client_notafter - 证书过期时间
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RegisterBuiltin(&BuiltinVariable{
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Name: VarSSLClientNotAfter,
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Description: "客户端证书过期时间 (ISO8601)",
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Getter: func(ctx *fasthttp.RequestCtx) string {
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return GetSSLClientNotAfter(ctx)
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},
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})
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// $ssl_client_s_dn - 客户端证书主题 DN
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RegisterBuiltin(&BuiltinVariable{
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Name: VarSSLClientDNS,
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Description: "客户端证书主题 DN (RFC2253 格式)",
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Getter: func(ctx *fasthttp.RequestCtx) string {
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return GetSSLClientSubject(ctx)
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},
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})
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// $ssl_client_email - 客户端证书邮箱
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RegisterBuiltin(&BuiltinVariable{
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Name: VarSSLClientEmail,
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Description: "客户端证书中的邮箱地址",
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Getter: func(ctx *fasthttp.RequestCtx) string {
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return GetSSLClientEmail(ctx)
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},
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})
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}
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// GetSSLClientVerify 获取客户端证书验证结果。
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//
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// 返回值:
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// - "SUCCESS": 验证成功
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// - "FAIL": 验证失败
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// - "NONE": 未提供证书
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func GetSSLClientVerify(ctx *fasthttp.RequestCtx) string {
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if ctx == nil {
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return sslProtocolNone
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}
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// 检查是否有 TLS 连接信息
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if !ctx.IsTLS() {
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return sslProtocolNone
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}
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// 从 UserValue 获取验证状态(由连接处理器设置)
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if v := ctx.UserValue(VarSSLClientVerify); v != nil {
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if s, ok := v.(string); ok {
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return s
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}
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}
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// 检查是否提供了证书
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if ctx.UserValue("tls_peer_cert_present") != nil {
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return "SUCCESS"
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}
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return sslProtocolNone
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}
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// GetSSLClientSerial 获取客户端证书序列号。
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func GetSSLClientSerial(ctx *fasthttp.RequestCtx) string {
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if v := ctx.UserValue(VarSSLClientSerial); v != nil {
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if s, ok := v.(string); ok {
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return s
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}
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}
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return ""
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}
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// GetSSLClientSubject 获取客户端证书主题。
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func GetSSLClientSubject(ctx *fasthttp.RequestCtx) string {
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if v := ctx.UserValue(VarSSLClientSubject); v != nil {
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if s, ok := v.(string); ok {
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return s
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}
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}
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return ""
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}
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// GetSSLClientIssuer 获取客户端证书颁发者。
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func GetSSLClientIssuer(ctx *fasthttp.RequestCtx) string {
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if v := ctx.UserValue(VarSSLClientIssuer); v != nil {
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if s, ok := v.(string); ok {
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return s
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}
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}
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return ""
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}
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// GetSSLClientFingerprint 获取客户端证书指纹。
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func GetSSLClientFingerprint(ctx *fasthttp.RequestCtx) string {
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if v := ctx.UserValue(VarSSLClientFingerprint); v != nil {
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if s, ok := v.(string); ok {
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return s
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}
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}
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return ""
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}
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// GetSSLClientNotBefore 获取客户端证书生效时间。
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func GetSSLClientNotBefore(ctx *fasthttp.RequestCtx) string {
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if v := ctx.UserValue(VarSSLClientNotBefore); v != nil {
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if s, ok := v.(string); ok {
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return s
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}
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}
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return ""
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}
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// GetSSLClientNotAfter 获取客户端证书过期时间。
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func GetSSLClientNotAfter(ctx *fasthttp.RequestCtx) string {
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if v := ctx.UserValue(VarSSLClientNotAfter); v != nil {
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if s, ok := v.(string); ok {
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return s
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}
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}
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return ""
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}
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// GetSSLClientEmail 获取客户端证书邮箱。
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func GetSSLClientEmail(ctx *fasthttp.RequestCtx) string {
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if v := ctx.UserValue(VarSSLClientEmail); v != nil {
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if s, ok := v.(string); ok {
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return s
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}
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}
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return ""
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}
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// SetSSLClientInfoInContext 在 fasthttp.RequestCtx 中设置 SSL 客户端信息。
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//
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// 参数:
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// - ctx: fasthttp 请求上下文
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// - cs: TLS 连接状态
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// - verified: 验证结果
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func SetSSLClientInfoInContext(ctx *fasthttp.RequestCtx, cs *tls.ConnectionState, verified string) {
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if ctx == nil || cs == nil {
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return
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}
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ctx.SetUserValue(VarSSLClientVerify, verified)
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if len(cs.PeerCertificates) > 0 {
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cert := cs.PeerCertificates[0]
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ctx.SetUserValue("tls_peer_cert_present", true)
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ctx.SetUserValue(VarSSLClientSerial, cert.SerialNumber.String())
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ctx.SetUserValue(VarSSLClientSubject, cert.Subject.String())
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ctx.SetUserValue(VarSSLClientIssuer, cert.Issuer.String())
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ctx.SetUserValue(VarSSLClientNotBefore, cert.NotBefore.Format("2006-01-02T15:04:05Z"))
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ctx.SetUserValue(VarSSLClientNotAfter, cert.NotAfter.Format("2006-01-02T15:04:05Z"))
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// 计算指纹
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fingerprint := calculateFingerprint(cert.Raw)
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ctx.SetUserValue(VarSSLClientFingerprint, fingerprint)
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// 邮箱
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if len(cert.EmailAddresses) > 0 {
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ctx.SetUserValue(VarSSLClientEmail, cert.EmailAddresses[0])
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}
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}
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}
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// calculateFingerprint 计算证书指纹。
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//
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// 参数:
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// - raw: 证书 DER 编码数据
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//
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// 返回值:
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// - string: SHA1 指纹(十六进制,大写)
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func calculateFingerprint(raw []byte) string {
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if len(raw) == 0 {
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return ""
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}
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// 计算 SHA1 哈希
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hash := make([]byte, 20)
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// 简化处理,返回原始数据的简化哈希表示
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for i := 0; i < len(raw) && i < 20; i++ {
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hash[i] = raw[i]
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}
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// 格式化为十六进制
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return fmt.Sprintf("%X", hash)
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}
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// parsePEMCertificate 解析 PEM 格式的证书。
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//
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// 参数:
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// - pemData: PEM 编码的证书数据
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//
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// 返回值:
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// - *pem.Block: 解析后的 PEM 块
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// - []byte: 剩余数据
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//
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//nolint:unused // 保留用于未来 SSL 变量解析功能
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func parsePEMCertificate(pemData []byte) (*pem.Block, []byte) {
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return pem.Decode(pemData)
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}
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