Adding upstream version 9.0.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>

10 files changed, 573 insertions, 0 deletions

diff --git a/routers/common/auth.go b/routers/common/auth.go
new file mode 100644
index 0000000..115d65e
--- /dev/null
+++ b/routers/common/auth.go
@@ -0,0 +1,45 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package common
+
+import (
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/web/middleware"
+	auth_service "code.gitea.io/gitea/services/auth"
+	"code.gitea.io/gitea/services/context"
+)
+
+type AuthResult struct {
+	Doer        *user_model.User
+	IsBasicAuth bool
+}
+
+func AuthShared(ctx *context.Base, sessionStore auth_service.SessionStore, authMethod auth_service.Method) (ar AuthResult, err error) {
+	ar.Doer, err = authMethod.Verify(ctx.Req, ctx.Resp, ctx, sessionStore)
+	if err != nil {
+		return ar, err
+	}
+	if ar.Doer != nil {
+		if ctx.Locale.Language() != ar.Doer.Language {
+			ctx.Locale = middleware.Locale(ctx.Resp, ctx.Req)
+		}
+		ar.IsBasicAuth = ctx.Data["AuthedMethod"].(string) == auth_service.BasicMethodName
+
+		ctx.Data["IsSigned"] = true
+		ctx.Data[middleware.ContextDataKeySignedUser] = ar.Doer
+		ctx.Data["SignedUserID"] = ar.Doer.ID
+		ctx.Data["IsAdmin"] = ar.Doer.IsAdmin
+	} else {
+		ctx.Data["SignedUserID"] = int64(0)
+	}
+	return ar, nil
+}
+
+// VerifyOptions contains required or check options
+type VerifyOptions struct {
+	SignInRequired  bool
+	SignOutRequired bool
+	AdminRequired   bool
+	DisableCSRF     bool
+}
diff --git a/routers/common/compare.go b/routers/common/compare.go
new file mode 100644
index 0000000..4d1cc2f
--- /dev/null
+++ b/routers/common/compare.go
@@ -0,0 +1,21 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package common
+
+import (
+	repo_model "code.gitea.io/gitea/models/repo"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/git"
+)
+
+// CompareInfo represents the collected results from ParseCompareInfo
+type CompareInfo struct {
+	HeadUser         *user_model.User
+	HeadRepo         *repo_model.Repository
+	HeadGitRepo      *git.Repository
+	CompareInfo      *git.CompareInfo
+	BaseBranch       string
+	HeadBranch       string
+	DirectComparison bool
+}
diff --git a/routers/common/db.go b/routers/common/db.go
new file mode 100644
index 0000000..d7dcfa0
--- /dev/null
+++ b/routers/common/db.go
@@ -0,0 +1,59 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package common
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/migrations"
+	system_model "code.gitea.io/gitea/models/system"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/setting/config"
+
+	"xorm.io/xorm"
+)
+
+// InitDBEngine In case of problems connecting to DB, retry connection. Eg, PGSQL in Docker Container on Synology
+func InitDBEngine(ctx context.Context) (err error) {
+	log.Info("Beginning ORM engine initialization.")
+	for i := 0; i < setting.Database.DBConnectRetries; i++ {
+		select {
+		case <-ctx.Done():
+			return fmt.Errorf("Aborted due to shutdown:\nin retry ORM engine initialization")
+		default:
+		}
+		log.Info("ORM engine initialization attempt #%d/%d...", i+1, setting.Database.DBConnectRetries)
+		if err = db.InitEngineWithMigration(ctx, migrateWithSetting); err == nil {
+			break
+		} else if i == setting.Database.DBConnectRetries-1 {
+			return err
+		}
+		log.Error("ORM engine initialization attempt #%d/%d failed. Error: %v", i+1, setting.Database.DBConnectRetries, err)
+		log.Info("Backing off for %d seconds", int64(setting.Database.DBConnectBackoff/time.Second))
+		time.Sleep(setting.Database.DBConnectBackoff)
+	}
+	config.SetDynGetter(system_model.NewDatabaseDynKeyGetter())
+	return nil
+}
+
+func migrateWithSetting(x *xorm.Engine) error {
+	if setting.Database.AutoMigration {
+		return migrations.Migrate(x)
+	}
+
+	if current, err := migrations.GetCurrentDBVersion(x); err != nil {
+		return err
+	} else if current < 0 {
+		// execute migrations when the database isn't initialized even if AutoMigration is false
+		return migrations.Migrate(x)
+	} else if expected := migrations.ExpectedVersion(); current != expected {
+		log.Fatal(`"database.AUTO_MIGRATION" is disabled, but current database version %d is not equal to the expected version %d.`+
+			`You can set "database.AUTO_MIGRATION" to true or migrate manually by running "forgejo [--config /path/to/app.ini] migrate"`, current, expected)
+	}
+	return nil
+}
diff --git a/routers/common/errpage.go b/routers/common/errpage.go
new file mode 100644
index 0000000..402ca44
--- /dev/null
+++ b/routers/common/errpage.go
@@ -0,0 +1,56 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package common
+
+import (
+	"fmt"
+	"net/http"
+
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/httpcache"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/templates"
+	"code.gitea.io/gitea/modules/web/middleware"
+	"code.gitea.io/gitea/modules/web/routing"
+	"code.gitea.io/gitea/services/context"
+)
+
+const tplStatus500 base.TplName = "status/500"
+
+// RenderPanicErrorPage renders a 500 page, and it never panics
+func RenderPanicErrorPage(w http.ResponseWriter, req *http.Request, err any) {
+	combinedErr := fmt.Sprintf("%v\n%s", err, log.Stack(2))
+	log.Error("PANIC: %s", combinedErr)
+
+	defer func() {
+		if err := recover(); err != nil {
+			log.Error("Panic occurs again when rendering error page: %v. Stack:\n%s", err, log.Stack(2))
+		}
+	}()
+
+	routing.UpdatePanicError(req.Context(), err)
+
+	httpcache.SetCacheControlInHeader(w.Header(), 0, "no-transform")
+	w.Header().Set(`X-Frame-Options`, setting.CORSConfig.XFrameOptions)
+
+	tmplCtx := context.TemplateContext{}
+	tmplCtx["Locale"] = middleware.Locale(w, req)
+	ctxData := middleware.GetContextData(req.Context())
+
+	// This recovery handler could be called without Gitea's web context, so we shouldn't touch that context too much.
+	// Otherwise, the 500-page may cause new panics, eg: cache.GetContextWithData, it makes the developer&users couldn't find the original panic.
+	user, _ := ctxData[middleware.ContextDataKeySignedUser].(*user_model.User)
+	if !setting.IsProd || (user != nil && user.IsAdmin) {
+		ctxData["ErrorMsg"] = "PANIC: " + combinedErr
+	}
+
+	err = templates.HTMLRenderer().HTML(w, http.StatusInternalServerError, string(tplStatus500), ctxData, tmplCtx)
+	if err != nil {
+		log.Error("Error occurs again when rendering error page: %v", err)
+		w.WriteHeader(http.StatusInternalServerError)
+		_, _ = w.Write([]byte("Internal server error, please collect error logs and report to Gitea issue tracker"))
+	}
+}
diff --git a/routers/common/errpage_test.go b/routers/common/errpage_test.go
new file mode 100644
index 0000000..4fd63ba
--- /dev/null
+++ b/routers/common/errpage_test.go
@@ -0,0 +1,39 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package common
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+
+	"code.gitea.io/gitea/models/unittest"
+	"code.gitea.io/gitea/modules/test"
+	"code.gitea.io/gitea/modules/web/middleware"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestRenderPanicErrorPage(t *testing.T) {
+	w := httptest.NewRecorder()
+	req := &http.Request{URL: &url.URL{}}
+	req = req.WithContext(middleware.WithContextData(context.Background()))
+	RenderPanicErrorPage(w, req, errors.New("fake panic error (for test only)"))
+	respContent := w.Body.String()
+	assert.Contains(t, respContent, `class="page-content status-page-500"`)
+	assert.Contains(t, respContent, `</html>`)
+	assert.Contains(t, respContent, `lang="en-US"`) // make sure the locale work
+
+	// the 500 page doesn't have normal pages footer, it makes it easier to distinguish a normal page and a failed page.
+	// especially when a sub-template causes page error, the HTTP response code is still 200,
+	// the different "footer" is the only way to know whether a page is fully rendered without error.
+	assert.False(t, test.IsNormalPageCompleted(respContent))
+}
+
+func TestMain(m *testing.M) {
+	unittest.MainTest(m)
+}
diff --git a/routers/common/markup.go b/routers/common/markup.go
new file mode 100644
index 0000000..2d5638e
--- /dev/null
+++ b/routers/common/markup.go
@@ -0,0 +1,98 @@
+// Copyright 2014 The Gogs Authors. All rights reserved.
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package common
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+
+	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/markup/markdown"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/services/context"
+
+	"mvdan.cc/xurls/v2"
+)
+
+// RenderMarkup renders markup text for the /markup and /markdown endpoints
+func RenderMarkup(ctx *context.Base, repo *context.Repository, mode, text, urlPrefix, filePath string, wiki bool) {
+	var markupType string
+	relativePath := ""
+
+	if len(text) == 0 {
+		_, _ = ctx.Write([]byte(""))
+		return
+	}
+
+	switch mode {
+	case "markdown":
+		// Raw markdown
+		if err := markdown.RenderRaw(&markup.RenderContext{
+			Ctx: ctx,
+			Links: markup.Links{
+				AbsolutePrefix: true,
+				Base:           urlPrefix,
+			},
+		}, strings.NewReader(text), ctx.Resp); err != nil {
+			ctx.Error(http.StatusInternalServerError, err.Error())
+		}
+		return
+	case "comment":
+		// Comment as markdown
+		markupType = markdown.MarkupName
+	case "gfm":
+		// Github Flavored Markdown as document
+		markupType = markdown.MarkupName
+	case "file":
+		// File as document based on file extension
+		markupType = ""
+		relativePath = filePath
+	default:
+		ctx.Error(http.StatusUnprocessableEntity, fmt.Sprintf("Unknown mode: %s", mode))
+		return
+	}
+
+	if !strings.HasPrefix(setting.AppSubURL+"/", urlPrefix) {
+		// check if urlPrefix is already set to a URL
+		linkRegex, _ := xurls.StrictMatchingScheme("https?://")
+		m := linkRegex.FindStringIndex(urlPrefix)
+		if m == nil {
+			urlPrefix = util.URLJoin(setting.AppURL, urlPrefix)
+		}
+	}
+
+	meta := map[string]string{}
+	if repo != nil && repo.Repository != nil {
+		if mode == "comment" {
+			meta = repo.Repository.ComposeMetas(ctx)
+		} else {
+			meta = repo.Repository.ComposeDocumentMetas(ctx)
+		}
+	}
+	if mode != "comment" {
+		meta["mode"] = "document"
+	}
+
+	if err := markup.Render(&markup.RenderContext{
+		Ctx: ctx,
+		Links: markup.Links{
+			AbsolutePrefix: true,
+			Base:           urlPrefix,
+		},
+		Metas:        meta,
+		IsWiki:       wiki,
+		Type:         markupType,
+		RelativePath: relativePath,
+	}, strings.NewReader(text), ctx.Resp); err != nil {
+		if markup.IsErrUnsupportedRenderExtension(err) {
+			ctx.Error(http.StatusUnprocessableEntity, err.Error())
+		} else {
+			ctx.Error(http.StatusInternalServerError, err.Error())
+		}
+		return
+	}
+}
diff --git a/routers/common/middleware.go b/routers/common/middleware.go
new file mode 100644
index 0000000..59e59b8
--- /dev/null
+++ b/routers/common/middleware.go
@@ -0,0 +1,116 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package common
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+
+	"code.gitea.io/gitea/modules/cache"
+	"code.gitea.io/gitea/modules/process"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/web/middleware"
+	"code.gitea.io/gitea/modules/web/routing"
+	"code.gitea.io/gitea/services/context"
+
+	"code.forgejo.org/go-chi/session"
+	"github.com/chi-middleware/proxy"
+	chi "github.com/go-chi/chi/v5"
+)
+
+// ProtocolMiddlewares returns HTTP protocol related middlewares, and it provides a global panic recovery
+func ProtocolMiddlewares() (handlers []any) {
+	// first, normalize the URL path
+	handlers = append(handlers, stripSlashesMiddleware)
+
+	// prepare the ContextData and panic recovery
+	handlers = append(handlers, func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
+			defer func() {
+				if err := recover(); err != nil {
+					RenderPanicErrorPage(resp, req, err) // it should never panic
+				}
+			}()
+			req = req.WithContext(middleware.WithContextData(req.Context()))
+			next.ServeHTTP(resp, req)
+		})
+	})
+
+	// wrap the request and response, use the process context and add it to the process manager
+	handlers = append(handlers, func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
+			ctx, _, finished := process.GetManager().AddTypedContext(req.Context(), fmt.Sprintf("%s: %s", req.Method, req.RequestURI), process.RequestProcessType, true)
+			defer finished()
+			next.ServeHTTP(context.WrapResponseWriter(resp), req.WithContext(cache.WithCacheContext(ctx)))
+		})
+	})
+
+	if setting.ReverseProxyLimit > 0 {
+		opt := proxy.NewForwardedHeadersOptions().
+			WithForwardLimit(setting.ReverseProxyLimit).
+			ClearTrustedProxies()
+		for _, n := range setting.ReverseProxyTrustedProxies {
+			if !strings.Contains(n, "/") {
+				opt.AddTrustedProxy(n)
+			} else {
+				opt.AddTrustedNetwork(n)
+			}
+		}
+		handlers = append(handlers, proxy.ForwardedHeaders(opt))
+	}
+
+	if setting.IsRouteLogEnabled() {
+		handlers = append(handlers, routing.NewLoggerHandler())
+	}
+
+	if setting.IsAccessLogEnabled() {
+		handlers = append(handlers, context.AccessLogger())
+	}
+
+	return handlers
+}
+
+func stripSlashesMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
+		// First of all escape the URL RawPath to ensure that all routing is done using a correctly escaped URL
+		req.URL.RawPath = req.URL.EscapedPath()
+
+		urlPath := req.URL.RawPath
+		rctx := chi.RouteContext(req.Context())
+		if rctx != nil && rctx.RoutePath != "" {
+			urlPath = rctx.RoutePath
+		}
+
+		sanitizedPath := &strings.Builder{}
+		prevWasSlash := false
+		for _, chr := range strings.TrimRight(urlPath, "/") {
+			if chr != '/' || !prevWasSlash {
+				sanitizedPath.WriteRune(chr)
+			}
+			prevWasSlash = chr == '/'
+		}
+
+		if rctx == nil {
+			req.URL.Path = sanitizedPath.String()
+		} else {
+			rctx.RoutePath = sanitizedPath.String()
+		}
+		next.ServeHTTP(resp, req)
+	})
+}
+
+func Sessioner() func(next http.Handler) http.Handler {
+	return session.Sessioner(session.Options{
+		Provider:       setting.SessionConfig.Provider,
+		ProviderConfig: setting.SessionConfig.ProviderConfig,
+		CookieName:     setting.SessionConfig.CookieName,
+		CookiePath:     setting.SessionConfig.CookiePath,
+		Gclifetime:     setting.SessionConfig.Gclifetime,
+		Maxlifetime:    setting.SessionConfig.Maxlifetime,
+		Secure:         setting.SessionConfig.Secure,
+		SameSite:       setting.SessionConfig.SameSite,
+		Domain:         setting.SessionConfig.Domain,
+	})
+}
diff --git a/routers/common/middleware_test.go b/routers/common/middleware_test.go
new file mode 100644
index 0000000..f16b937
--- /dev/null
+++ b/routers/common/middleware_test.go
@@ -0,0 +1,70 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+package common
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestStripSlashesMiddleware(t *testing.T) {
+	type test struct {
+		name         string
+		expectedPath string
+		inputPath    string
+	}
+
+	tests := []test{
+		{
+			name:         "path with multiple slashes",
+			inputPath:    "https://github.com///go-gitea//gitea.git",
+			expectedPath: "/go-gitea/gitea.git",
+		},
+		{
+			name:         "path with no slashes",
+			inputPath:    "https://github.com/go-gitea/gitea.git",
+			expectedPath: "/go-gitea/gitea.git",
+		},
+		{
+			name:         "path with slashes in the middle",
+			inputPath:    "https://git.data.coop//halfd/new-website.git",
+			expectedPath: "/halfd/new-website.git",
+		},
+		{
+			name:         "path with slashes in the middle",
+			inputPath:    "https://git.data.coop//halfd/new-website.git",
+			expectedPath: "/halfd/new-website.git",
+		},
+		{
+			name:         "path with slashes in the end",
+			inputPath:    "/user2//repo1/",
+			expectedPath: "/user2/repo1",
+		},
+		{
+			name:         "path with slashes and query params",
+			inputPath:    "/repo//migrate?service_type=3",
+			expectedPath: "/repo/migrate",
+		},
+		{
+			name:         "path with encoded slash",
+			inputPath:    "/user2/%2F%2Frepo1",
+			expectedPath: "/user2/%2F%2Frepo1",
+		},
+	}
+
+	for _, tt := range tests {
+		testMiddleware := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			assert.Equal(t, tt.expectedPath, r.URL.Path)
+		})
+
+		// pass the test middleware to validate the changes
+		handlerToTest := stripSlashesMiddleware(testMiddleware)
+		// create a mock request to use
+		req := httptest.NewRequest("GET", tt.inputPath, nil)
+		// call the handler using a mock response recorder
+		handlerToTest.ServeHTTP(httptest.NewRecorder(), req)
+	}
+}
diff --git a/routers/common/redirect.go b/routers/common/redirect.go
new file mode 100644
index 0000000..9bf2025
--- /dev/null
+++ b/routers/common/redirect.go
@@ -0,0 +1,26 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package common
+
+import (
+	"net/http"
+
+	"code.gitea.io/gitea/modules/httplib"
+)
+
+// FetchRedirectDelegate helps the "fetch" requests to redirect to the correct location
+func FetchRedirectDelegate(resp http.ResponseWriter, req *http.Request) {
+	// When use "fetch" to post requests and the response is a redirect, browser's "location.href = uri" has limitations.
+	// 1. change "location" from old "/foo" to new "/foo#hash", the browser will not reload the page.
+	// 2. when use "window.reload()", the hash is not respected, the newly loaded page won't scroll to the hash target.
+	// The typical page is "issue comment" page. The backend responds "/owner/repo/issues/1#comment-2",
+	// then frontend needs this delegate to redirect to the new location with hash correctly.
+	redirect := req.PostFormValue("redirect")
+	if httplib.IsRiskyRedirectURL(redirect) {
+		resp.WriteHeader(http.StatusBadRequest)
+		return
+	}
+	resp.Header().Add("Location", redirect)
+	resp.WriteHeader(http.StatusSeeOther)
+}
diff --git a/routers/common/serve.go b/routers/common/serve.go
new file mode 100644
index 0000000..446908d
--- /dev/null
+++ b/routers/common/serve.go
@@ -0,0 +1,43 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package common
+
+import (
+	"io"
+	"time"
+
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/httpcache"
+	"code.gitea.io/gitea/modules/httplib"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/services/context"
+)
+
+// ServeBlob download a git.Blob
+func ServeBlob(ctx *context.Base, filePath string, blob *git.Blob, lastModified *time.Time) error {
+	if httpcache.HandleGenericETagTimeCache(ctx.Req, ctx.Resp, `"`+blob.ID.String()+`"`, lastModified) {
+		return nil
+	}
+
+	dataRc, err := blob.DataAsync()
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err = dataRc.Close(); err != nil {
+			log.Error("ServeBlob: Close: %v", err)
+		}
+	}()
+
+	httplib.ServeContentByReader(ctx.Req, ctx.Resp, filePath, blob.Size(), dataRc)
+	return nil
+}
+
+func ServeContentByReader(ctx *context.Base, filePath string, size int64, reader io.Reader) {
+	httplib.ServeContentByReader(ctx.Req, ctx.Resp, filePath, size, reader)
+}
+
+func ServeContentByReadSeeker(ctx *context.Base, filePath string, modTime *time.Time, reader io.ReadSeeker) {
+	httplib.ServeContentByReadSeeker(ctx.Req, ctx.Resp, filePath, modTime, reader)
+}