Don't store assets modified time into generated files (#18193)

11 files changed, 110 insertions, 22 deletions

diff --git a/build/generate-bindata.go b/build/generate-bindata.go
index 477139d67b..7941af60a1 100644
--- a/build/generate-bindata.go
+++ b/build/generate-bindata.go
@@ -58,11 +58,15 @@ func needsUpdate(dir string, filename string) (bool, []byte) {
 }
 
 func main() {
-	if len(os.Args) != 4 {
+	if len(os.Args) < 4 {
 		log.Fatal("Insufficient number of arguments. Need: directory packageName filename")
 	}
 
 	dir, packageName, filename := os.Args[1], os.Args[2], os.Args[3]
+	var useGlobalModTime bool
+	if len(os.Args) == 5 {
+		useGlobalModTime, _ = strconv.ParseBool(os.Args[4])
+	}
 
 	update, newHash := needsUpdate(dir, filename)
 
@@ -74,10 +78,11 @@ func main() {
 	fmt.Printf("generating bindata for %s\n", packageName)
 	var fsTemplates http.FileSystem = http.Dir(dir)
 	err := vfsgen.Generate(fsTemplates, vfsgen.Options{
-		PackageName:  packageName,
-		BuildTags:    "bindata",
-		VariableName: "Assets",
-		Filename:     filename,
+		PackageName:      packageName,
+		BuildTags:        "bindata",
+		VariableName:     "Assets",
+		Filename:         filename,
+		UseGlobalModTime: useGlobalModTime,
 	})
 	if err != nil {
 		log.Fatalf("%v\n", err)
diff --git a/go.mod b/go.mod
index 27e89fae3c..96d05a22dc 100644
--- a/go.mod
+++ b/go.mod
@@ -141,3 +141,5 @@ require (
 replace github.com/hashicorp/go-version => github.com/6543/go-version v1.3.1
 
 replace github.com/golang-jwt/jwt v3.2.1+incompatible => github.com/golang-jwt/jwt v3.2.2+incompatible
+
+replace github.com/shurcooL/vfsgen => github.com/lunny/vfsgen v0.0.0-20220105142115-2c99e1ffdfa0
diff --git a/go.sum b/go.sum
index fd1105627e..16a0fd3cc5 100644
--- a/go.sum
+++ b/go.sum
@@ -802,6 +802,8 @@ github.com/lunny/dingtalk_webhook v0.0.0-20171025031554-e3534c89ef96 h1:uNwtsDp7
 github.com/lunny/dingtalk_webhook v0.0.0-20171025031554-e3534c89ef96/go.mod h1:mmIfjCSQlGYXmJ95jFN84AkQFnVABtKuJL8IrzwvUKQ=
 github.com/lunny/log v0.0.0-20160921050905-7887c61bf0de/go.mod h1:3q8WtuPQsoRbatJuy3nvq/hRSvuBJrHHr+ybPPiNvHQ=
 github.com/lunny/nodb v0.0.0-20160621015157-fc1ef06ad4af/go.mod h1:Cqz6pqow14VObJ7peltM+2n3PWOz7yTrfUuGbVFkzN0=
+github.com/lunny/vfsgen v0.0.0-20220105142115-2c99e1ffdfa0 h1:F/3FfGmKdiKFa8kL3YrpZ7pe9H4l4AzA1pbaOUnRvPI=
+github.com/lunny/vfsgen v0.0.0-20220105142115-2c99e1ffdfa0/go.mod h1:JEfTc3+2DF9Z4PXhLLvXL42zexJyh8rIq3OzUj/0rAk=
 github.com/lyft/protoc-gen-validate v0.0.13/go.mod h1:XbGvPuh87YZc5TdIa2/I4pLk0QoUACkjt2znoq26NVQ=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/magiconair/properties v1.8.1/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
@@ -1044,8 +1046,6 @@ github.com/shopspring/decimal v1.2.0/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFR
 github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749 h1:bUGsEnyNbVPw06Bs80sCeARAlK8lhwqGyi6UT8ymuGk=
 github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749/go.mod h1:ZY1cvUeJuFPAdZ/B6v7RHavJWZn2YPVFQ1OSXhCGOkg=
 github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
-github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546 h1:pXY9qYc/MP5zdvqWEUH6SjNiu7VhSjuVFTFiTcphaLU=
-github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546/go.mod h1:TrYk7fJVaAttu97ZZKrO9UbRa8izdowaMIZcxYMbVaw=
 github.com/siddontang/go v0.0.0-20180604090527-bdc77568d726/go.mod h1:3yhqj7WBBfRhbBlzyOC3gUxftwsU0u8gqevxwIHQpMw=
 github.com/siddontang/go-snappy v0.0.0-20140704025258-d8f7bb82a96d/go.mod h1:vq0tzqLRu6TS7Id0wMo2N5QzJoKedVeovOpHjnykSzY=
 github.com/siddontang/ledisdb v0.0.0-20190202134119-8ceb77e66a92/go.mod h1:mF1DpOSOUiJRMR+FDqaqu3EBqrybQtrDDszLUZ6oxPg=
diff --git a/modules/public/public_bindata.go b/modules/public/public_bindata.go
index eb10d96426..c5485b7cc0 100644
--- a/modules/public/public_bindata.go
+++ b/modules/public/public_bindata.go
@@ -7,4 +7,4 @@
 
 package public
 
-//go:generate go run -mod=vendor  ../../build/generate-bindata.go ../../public public bindata.go
+//go:generate go run -mod=vendor  ../../build/generate-bindata.go ../../public public bindata.go true
diff --git a/modules/public/static.go b/modules/public/static.go
index 32ba0fe258..2e35329a07 100644
--- a/modules/public/static.go
+++ b/modules/public/static.go
@@ -18,8 +18,14 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/timeutil"
 )
 
+// GlobalModTime provide a gloabl mod time for embedded asset files
+func GlobalModTime(filename string) time.Time {
+	return timeutil.GetExecutableModTime()
+}
+
 func fileSystem(dir string) http.FileSystem {
 	return Assets
 }
diff --git a/modules/templates/static.go b/modules/templates/static.go
index fdd68c1e6a..c2295b2bd8 100644
--- a/modules/templates/static.go
+++ b/modules/templates/static.go
@@ -15,9 +15,11 @@ import (
 	"path/filepath"
 	"strings"
 	texttmpl "text/template"
+	"time"
 
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/timeutil"
 	"code.gitea.io/gitea/modules/util"
 )
 
@@ -26,6 +28,11 @@ var (
 	bodyTemplates    = template.New("")
 )
 
+// GlobalModTime provide a gloabl mod time for embedded asset files
+func GlobalModTime(filename string) time.Time {
+	return timeutil.GetExecutableModTime()
+}
+
 // GetAsset get a special asset, only for chi
 func GetAsset(name string) ([]byte, error) {
 	bs, err := os.ReadFile(filepath.Join(setting.CustomPath, name))
diff --git a/modules/templates/templates_bindata.go b/modules/templates/templates_bindata.go
index 887f9eeba2..95f71d0042 100644
--- a/modules/templates/templates_bindata.go
+++ b/modules/templates/templates_bindata.go
@@ -7,4 +7,4 @@
 
 package templates
 
-//go:generate go run -mod=vendor ../../build/generate-bindata.go ../../templates templates bindata.go
+//go:generate go run -mod=vendor ../../build/generate-bindata.go ../../templates templates bindata.go true
diff --git a/modules/timeutil/executable.go b/modules/timeutil/executable.go
new file mode 100644
index 0000000000..b0a3280753
--- /dev/null
+++ b/modules/timeutil/executable.go
@@ -0,0 +1,49 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package timeutil
+
+import (
+	"os"
+	"path/filepath"
+	"sync"
+	"time"
+
+	"code.gitea.io/gitea/modules/log"
+)
+
+var executablModTime = time.Now()
+var executablModTimeOnce sync.Once
+
+// GetExecutableModTime get executable file modified time of current process.
+func GetExecutableModTime() time.Time {
+	executablModTimeOnce.Do(func() {
+		exePath, err := os.Executable()
+		if err != nil {
+			log.Error("os.Executable: %v", err)
+			return
+		}
+
+		exePath, err = filepath.Abs(exePath)
+		if err != nil {
+			log.Error("filepath.Abs: %v", err)
+			return
+		}
+
+		exePath, err = filepath.EvalSymlinks(exePath)
+		if err != nil {
+			log.Error("filepath.EvalSymlinks: %v", err)
+			return
+		}
+
+		st, err := os.Stat(exePath)
+		if err != nil {
+			log.Error("os.Stat: %v", err)
+			return
+		}
+
+		executablModTime = st.ModTime()
+	})
+	return executablModTime
+}
diff --git a/vendor/github.com/shurcooL/vfsgen/generator.go b/vendor/github.com/shurcooL/vfsgen/generator.go
index c0067c5d36..dfe6c24a5e 100644
--- a/vendor/github.com/shurcooL/vfsgen/generator.go
+++ b/vendor/github.com/shurcooL/vfsgen/generator.go
@@ -30,7 +30,9 @@ func Generate(input http.FileSystem, opt Options) error {
 		return err
 	}
 
-	var toc toc
+	var toc = toc{
+		UseGlobalModTime: opt.UseGlobalModTime,
+	}
 	err = findAndWriteFiles(buf, input, &toc)
 	if err != nil {
 		return err
@@ -56,6 +58,8 @@ type toc struct {
 
 	HasCompressedFile bool // There's at least one compressedFile.
 	HasFile           bool // There's at least one uncompressed file.
+	UseGlobalModTime  bool // copy from opt
+
 }
 
 // fileInfo is a definition of a file.
@@ -64,14 +68,16 @@ type fileInfo struct {
 	Name             string
 	ModTime          time.Time
 	UncompressedSize int64
+	UseGlobalModTime bool
 }
 
 // dirInfo is a definition of a directory.
 type dirInfo struct {
-	Path    string
-	Name    string
-	ModTime time.Time
-	Entries []string
+	Path             string
+	Name             string
+	ModTime          time.Time
+	Entries          []string
+	UseGlobalModTime bool
 }
 
 // findAndWriteFiles recursively finds all the file paths in the given directory tree.
@@ -91,6 +97,7 @@ func findAndWriteFiles(buf *bytes.Buffer, fs http.FileSystem, toc *toc) error {
 				Name:             pathpkg.Base(path),
 				ModTime:          fi.ModTime().UTC(),
 				UncompressedSize: fi.Size(),
+				UseGlobalModTime: toc.UseGlobalModTime,
 			}
 
 			marker := buf.Len()
@@ -125,10 +132,11 @@ func findAndWriteFiles(buf *bytes.Buffer, fs http.FileSystem, toc *toc) error {
 			}
 
 			dir := &dirInfo{
-				Path:    path,
-				Name:    pathpkg.Base(path),
-				ModTime: fi.ModTime().UTC(),
-				Entries: entries,
+				Path:             path,
+				Name:             pathpkg.Base(path),
+				ModTime:          fi.ModTime().UTC(),
+				Entries:          entries,
+				UseGlobalModTime: toc.UseGlobalModTime,
 			}
 
 			toc.dirs = append(toc.dirs, dir)
@@ -242,7 +250,9 @@ var {{.VariableName}} = func() http.FileSystem {
 
 {{define "CompressedFileInfo-Before"}}		{{quote .Path}}: &vfsgen۰CompressedFileInfo{
 			name:             {{quote .Name}},
+			{{if not .UseGlobalModTime}}
 			modTime:          {{template "Time" .ModTime}},
+			{{end}}
 			uncompressedSize: {{.UncompressedSize}},
 {{/* This blank line separating compressedContent is neccessary to prevent potential gofmt issues. See issue #19. */}}
 			compressedContent: []byte("{{end}}{{define "CompressedFileInfo-After"}}"),
@@ -253,7 +263,9 @@ var {{.VariableName}} = func() http.FileSystem {
 
 {{define "FileInfo-Before"}}		{{quote .Path}}: &vfsgen۰FileInfo{
 			name:    {{quote .Name}},
+			{{if not .UseGlobalModTime}}
 			modTime: {{template "Time" .ModTime}},
+			{{end}}
 			content: []byte("{{end}}{{define "FileInfo-After"}}"),
 		},
 {{end}}
@@ -262,7 +274,9 @@ var {{.VariableName}} = func() http.FileSystem {
 
 {{define "DirInfo"}}		{{quote .Path}}: &vfsgen۰DirInfo{
 			name:    {{quote .Name}},
+			{{if not .UseGlobalModTime}}
 			modTime: {{template "Time" .ModTime}},
+			{{end}}
 		},
 {{end}}
 
@@ -335,7 +349,7 @@ func (f *vfsgen۰CompressedFileInfo) GzipBytes() []byte {
 func (f *vfsgen۰CompressedFileInfo) Name() string       { return f.name }
 func (f *vfsgen۰CompressedFileInfo) Size() int64        { return f.uncompressedSize }
 func (f *vfsgen۰CompressedFileInfo) Mode() os.FileMode  { return 0444 }
-func (f *vfsgen۰CompressedFileInfo) ModTime() time.Time { return f.modTime }
+func (f *vfsgen۰CompressedFileInfo) ModTime() time.Time { return {{if .UseGlobalModTime}}GlobalModTime(f.name){{else}}f.modTime{{end}} }
 func (f *vfsgen۰CompressedFileInfo) IsDir() bool        { return false }
 func (f *vfsgen۰CompressedFileInfo) Sys() interface{}   { return nil }
 
@@ -407,7 +421,7 @@ func (f *vfsgen۰FileInfo) NotWorthGzipCompressing() {}
 func (f *vfsgen۰FileInfo) Name() string       { return f.name }
 func (f *vfsgen۰FileInfo) Size() int64        { return int64(len(f.content)) }
 func (f *vfsgen۰FileInfo) Mode() os.FileMode  { return 0444 }
-func (f *vfsgen۰FileInfo) ModTime() time.Time { return f.modTime }
+func (f *vfsgen۰FileInfo) ModTime() time.Time { return {{if .UseGlobalModTime}}GlobalModTime(f.name){{else}}f.modTime{{end}} }
 func (f *vfsgen۰FileInfo) IsDir() bool        { return false }
 func (f *vfsgen۰FileInfo) Sys() interface{}   { return nil }
 
@@ -440,7 +454,7 @@ func (d *vfsgen۰DirInfo) Stat() (os.FileInfo, error) { return d, nil }
 func (d *vfsgen۰DirInfo) Name() string       { return d.name }
 func (d *vfsgen۰DirInfo) Size() int64        { return 0 }
 func (d *vfsgen۰DirInfo) Mode() os.FileMode  { return 0755 | os.ModeDir }
-func (d *vfsgen۰DirInfo) ModTime() time.Time { return d.modTime }
+func (d *vfsgen۰DirInfo) ModTime() time.Time { return {{if .UseGlobalModTime}}GlobalModTime(d.name){{else}}d.modTime{{end}} }
 func (d *vfsgen۰DirInfo) IsDir() bool        { return true }
 func (d *vfsgen۰DirInfo) Sys() interface{}   { return nil }
 
diff --git a/vendor/github.com/shurcooL/vfsgen/options.go b/vendor/github.com/shurcooL/vfsgen/options.go
index d10d348e70..40f43a697a 100644
--- a/vendor/github.com/shurcooL/vfsgen/options.go
+++ b/vendor/github.com/shurcooL/vfsgen/options.go
@@ -26,6 +26,10 @@ type Options struct {
 	// VariableComment is the comment of the http.FileSystem variable in the generated code.
 	// If left empty, it defaults to "{{.VariableName}} statically implements the virtual filesystem provided to vfsgen.".
 	VariableComment string
+
+	// UseGlobalModTime indicates that not retrieve files' modified time if it's true. Once this
+	// is true, you have to define a function GlobalModTime(filename string) time.Time in the same package of generated files
+	UseGlobalModTime bool
 }
 
 // fillMissing sets default values for mandatory options that are left empty.
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 1609ad964c..c525a3e987 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -727,7 +727,7 @@ github.com/sergi/go-diff/diffmatchpatch
 # github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749
 ## explicit
 github.com/shurcooL/httpfs/vfsutil
-# github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546
+# github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546 => github.com/lunny/vfsgen v0.0.0-20220105142115-2c99e1ffdfa0
 ## explicit
 github.com/shurcooL/vfsgen
 # github.com/sirupsen/logrus v1.8.1
@@ -1061,3 +1061,4 @@ xorm.io/xorm/schemas
 xorm.io/xorm/tags
 # github.com/hashicorp/go-version => github.com/6543/go-version v1.3.1
 # github.com/golang-jwt/jwt v3.2.1+incompatible => github.com/golang-jwt/jwt v3.2.2+incompatible
+# github.com/shurcooL/vfsgen => github.com/lunny/vfsgen v0.0.0-20220105142115-2c99e1ffdfa0