更新 gotemplate 的参数注入

config.go

@@ -8,6 +8,8 @@ import (
 	"path/filepath"
 	"time"
 
+	sprig "github.com/go-task/slim-sprig/v3"
+
 	"github.com/alecthomas/units"
 
 	"code.d7z.net/d7z-project/gitea-pages/pkg"
@@ -52,13 +54,13 @@ func (c *Config) NewPageServerOptions() (*pkg.ServerOptions, error) {
 	if c.Page.DefaultBranch == "" {
 		c.Page.DefaultBranch = "gh-pages"
 	}
-	defaultErr := template.Must(template.New("err").Parse(defaultErrPage))
+	defaultErr := template.Must(template.New("err").Funcs(sprig.FuncMap()).Parse(defaultErrPage))
 	if c.Page.ErrUnknownPage != "" {
 		data, err := os.ReadFile(c.Page.ErrUnknownPage)
 		if err != nil {
 			return nil, errors.Wrapf(err, "failed to read file %s", string(data))
 		}
-		c.pageErrUnknown = template.Must(template.New("err").Parse(c.Page.ErrUnknownPage))
+		c.pageErrUnknown = template.Must(template.New("err").Funcs(sprig.FuncMap()).Parse(c.Page.ErrUnknownPage))
 	} else {
 		c.pageErrUnknown = defaultErr
 	}
@@ -67,7 +69,7 @@ func (c *Config) NewPageServerOptions() (*pkg.ServerOptions, error) {
 		if err != nil {
 			return nil, errors.Wrapf(err, "failed to read file %s", c.Page.ErrNotFoundPage)
 		}
-		c.pageErrNotFound = template.Must(template.New("err").Parse(string(data)))
+		c.pageErrNotFound = template.Must(template.New("err").Funcs(sprig.FuncMap()).Parse(string(data)))
 	} else {
 		c.pageErrNotFound = defaultErr
 	}
@@ -96,20 +98,18 @@ func (c *Config) NewPageServerOptions() (*pkg.ServerOptions, error) {
 func (c *Config) ErrorHandler(w http.ResponseWriter, r *http.Request, err error) {
 	if errors.Is(err, os.ErrNotExist) {
 		w.WriteHeader(http.StatusNotFound)
-		if err = c.pageErrNotFound.Execute(w, map[string]any{
-			"err":  err,
-			"req":  r,
-			"code": 404,
-		}); err != nil {
+		if err = c.pageErrNotFound.Execute(w, utils.NewTemplateInject(r, map[string]any{
+			"Error": err,
+			"Code":  404,
+		})); err != nil {
 			zap.L().Error("failed to render error page", zap.Error(err))
 		}
 	} else {
 		w.WriteHeader(http.StatusInternalServerError)
-		if err = c.pageErrUnknown.Execute(w, map[string]any{
-			"err":  err,
-			"req":  r,
-			"code": 500,
-		}); err != nil {
+		if err = c.pageErrUnknown.Execute(w, utils.NewTemplateInject(r, map[string]any{
+			"Error": err,
+			"Code":  500,
+		})); err != nil {
 			zap.L().Error("failed to render error page", zap.Error(err))
 		}
 	}

pkg/renders/gotemplate.go

@@ -3,11 +3,11 @@ package renders
 import (
 	"bytes"
 	"io"
-	"net"
 	"net/http"
-	"strings"
 	"text/template"
 
+	"code.d7z.net/d7z-project/gitea-pages/pkg/utils"
+
 	sprig "github.com/go-task/slim-sprig/v3"
 )
 
@@ -24,47 +24,13 @@ func (g GoTemplate) Render(w http.ResponseWriter, r *http.Request, input io.Read
 	}
 	out := &bytes.Buffer{}
 	parse, err := template.New("tmpl").Funcs(sprig.FuncMap()).Option("missingkey=error").Parse(string(dataB))
-	headers := make(map[string]string)
-	for k, vs := range r.Header {
-		headers[k] = strings.Join(vs, ",")
-	}
 	if err != nil {
 		return err
 	}
-	err = parse.Execute(out, map[string]interface{}{
-		"Request": map[string]any{
-			"Headers":    headers,
-			"Request":    r.RequestURI,
-			"RemoteAddr": r.RemoteAddr,
-			"RemoteIP":   GetRemoteIP(r),
-		},
-	})
+	err = parse.Execute(out, utils.NewTemplateInject(r, nil))
 	if err != nil {
 		return err
 	}
 	_, err = out.WriteTo(w)
 	return err
 }
-
-// 注意，相关 ip 获取未做反向代理安全判断，可能导致安全降级
-
-func GetRemoteIP(r *http.Request) string {
-	// 最先取 cloudflare 的头
-	if ip := r.Header.Get("CF-Connecting-IP"); ip != "" {
-		return ip
-	}
-	if forwardedFor := r.Header.Get("X-Forwarded-For"); forwardedFor != "" {
-		ips := strings.Split(forwardedFor, ",")
-		if len(ips) > 0 {
-			return strings.TrimSpace(ips[0])
-		}
-	}
-	if realIP := r.Header.Get("X-Real-IP"); realIP != "" {
-		return realIP
-	}
-	ip, _, err := net.SplitHostPort(r.RemoteAddr)
-	if err != nil {
-		return r.RemoteAddr
-	}
-	return ip
-}

pkg/utils/net.go

@@ -0,0 +1,30 @@
+package utils
+
+import (
+	"net"
+	"net/http"
+	"strings"
+)
+
+// 注意，相关 ip 获取未做反向代理安全判断，可能导致安全降级
+
+func GetRemoteIP(r *http.Request) string {
+	// 最先取 cloudflare 的头
+	if ip := r.Header.Get("CF-Connecting-IP"); ip != "" {
+		return ip
+	}
+	if forwardedFor := r.Header.Get("X-Forwarded-For"); forwardedFor != "" {
+		ips := strings.Split(forwardedFor, ",")
+		if len(ips) > 0 {
+			return strings.TrimSpace(ips[0])
+		}
+	}
+	if realIP := r.Header.Get("X-Real-IP"); realIP != "" {
+		return realIP
+	}
+	ip, _, err := net.SplitHostPort(r.RemoteAddr)
+	if err != nil {
+		return r.RemoteAddr
+	}
+	return ip
+}

pkg/utils/template.go

@@ -0,0 +1,25 @@
+package utils
+
+import (
+	"net/http"
+	"strings"
+)
+
+func NewTemplateInject(r *http.Request, def map[string]any) map[string]any {
+	if def == nil {
+		def = make(map[string]any)
+	}
+	headers := make(map[string]string)
+	for k, vs := range r.Header {
+		headers[k] = strings.Join(vs, ",")
+	}
+	def["Request"] = map[string]any{
+		"Headers":    headers,
+		"Path":       r.URL.Path,
+		"Method":     r.Method,
+		"RequestURI": r.RequestURI,
+		"RemoteAddr": r.RemoteAddr,
+		"RemoteIP":   GetRemoteIP(r),
+	}
+	return def
+}