Fix serving of raw wiki files other than .md (#5814)

* Fix serving of raw wiki files other than .md

Closes #4690.
Closes #4395.

Signed-off-by: Gabriel Silva Simões <simoes.sgabriel@gmail.com>

* Simplify code at routers/repo/wiki.go

Signed-off-by: Gabriel Silva Simões <simoes.sgabriel@gmail.com>

* Add more files to user2/repo1.wiki for testing

Signed-off-by: Gabriel Silva Simões <simoes.sgabriel@gmail.com>

* Update macaron to v1.3.2

Signed-off-by: Gabriel Silva Simões <simoes.sgabriel@gmail.com>

* Add tests for WikiRaw

Signed-off-by: Gabriel Silva Simões <simoes.sgabriel@gmail.com>

* Fix NewResponseWriter usage due to macaron update

Signed-off-by: Gabriel Silva Simões <simoes.sgabriel@gmail.com>

* Add raw to reserved wiki names

Signed-off-by: Gabriel Silva Simões <simoes.sgabriel@gmail.com>

integrations/gitea-repositories-meta/user2/repo1.wiki.git/objects/0c/f15c3f66ec8384480ed9c3cf87c9e97fbb0ec3

@@ -0,0 +1,2 @@
+x
���m� D�M��Y����(�J
�`�5�ɜ-�K*Ki,Hi!?��<�i�Vki0Z��XH�D(Z6ĨG�Sb��3�JD�h��!�uB��DaJp�	���F�Lƹ4+~��v�;���
+e����[Nx>K�����_s�q�/�]09MHpѤ��k���_d�-%�풇۞��	v�_�]��^�/�I[t

integrations/gitea-repositories-meta/user2/repo1.wiki.git/objects/71/911bf48766c7181518c1070911019fbb00b1fc

@@ -0,0 +1 @@
+x
�M�@��M����r�›�6�&&&��9Le�św����t<#���͡�mv-��0w�b��jy̖��ڗ~݋[�����=H��.�"������ǁ=

integrations/gitea-repositories-meta/user2/repo1.wiki.git/objects/c1/0d10b7e655b3dab1f53176db57c8219a5488d6

@@ -0,0 +1,2 @@
+x
���m�0���)n���t2�S����`ņ���e�,VY�/H�#�[)��E��@N�q��툎�r2�)D��0�j�C���L��aC��&�4B�v]$E����Iӑe����P�r�I�s�e�z�˳~_
+���[y��v��W��V=헛�˘�H	vZ~s�@݉%����?T�ZH

integrations/gitea-repositories-meta/user2/repo1.wiki.git/refs/heads/master

@@ -1 +1 @@
-2c54faec6c45d31c1abfaecdab471eac6633738a
+0cf15c3f66ec8384480ed9c3cf87c9e97fbb0ec3

models/wiki.go

@@ -22,7 +22,7 @@ import (
 )
 
 var (
-	reservedWikiNames = []string{"_pages", "_new", "_edit"}
+	reservedWikiNames = []string{"_pages", "_new", "_edit", "raw"}
 	wikiWorkingPool   = sync.NewExclusivePool()
 )
 

routers/api/v1/misc/markdown_test.go

@@ -27,7 +27,7 @@ func createContext(req *http.Request) (*macaron.Context, *httptest.ResponseRecor
 	c := &macaron.Context{
 		Injector: inject.New(),
 		Req:      macaron.Request{Request: req},
-		Resp:     macaron.NewResponseWriter(resp),
+		Resp:     macaron.NewResponseWriter(req.Method, resp),
 		Render:   &macaron.DummyRender{ResponseWriter: resp},
 		Data:     make(map[string]interface{}),
 	}

routers/repo/wiki.go

@@ -295,26 +295,41 @@ func WikiRaw(ctx *context.Context) {
 			return
 		}
 	}
+
 	providedPath := ctx.Params("*")
-	if strings.HasSuffix(providedPath, ".md") {
-		providedPath = providedPath[:len(providedPath)-3]
-	}
-	wikiPath := models.WikiNameToFilename(providedPath)
+
 	var entry *git.TreeEntry
 	if commit != nil {
-		entry, err = findEntryForFile(commit, wikiPath)
+		// Try to find a file with that name
+		entry, err = findEntryForFile(commit, providedPath)
+		if err != nil {
+			ctx.ServerError("findFile", err)
+			return
+		}
+
+		if entry == nil {
+			// Try to find a wiki page with that name
+			if strings.HasSuffix(providedPath, ".md") {
+				providedPath = providedPath[:len(providedPath)-3]
+			}
+
+			wikiPath := models.WikiNameToFilename(providedPath)
+			entry, err = findEntryForFile(commit, wikiPath)
+			if err != nil {
+				ctx.ServerError("findFile", err)
+				return
+			}
+		}
 	}
-	if err != nil {
-		ctx.ServerError("findFile", err)
-		return
-	} else if entry == nil {
-		ctx.NotFound("findEntryForFile", nil)
+
+	if entry != nil {
+		if err = ServeBlob(ctx, entry.Blob()); err != nil {
+			ctx.ServerError("ServeBlob", err)
+		}
 		return
 	}
 
-	if err = ServeBlob(ctx, entry.Blob()); err != nil {
-		ctx.ServerError("ServeBlob", err)
-	}
+	ctx.NotFound("findEntryForFile", nil)
 }
 
 // NewWiki render wiki create page

routers/repo/wiki_test.go

@@ -77,7 +77,7 @@ func TestWiki(t *testing.T) {
 	Wiki(ctx)
 	assert.EqualValues(t, http.StatusOK, ctx.Resp.Status())
 	assert.EqualValues(t, "Home", ctx.Data["Title"])
-	assertPagesMetas(t, []string{"Home"}, ctx.Data["Pages"])
+	assertPagesMetas(t, []string{"Home", "Page With Image", "Page With Spaced Name"}, ctx.Data["Pages"])
 }
 
 func TestWikiPages(t *testing.T) {
@@ -87,7 +87,7 @@ func TestWikiPages(t *testing.T) {
 	test.LoadRepo(t, ctx, 1)
 	WikiPages(ctx)
 	assert.EqualValues(t, http.StatusOK, ctx.Resp.Status())
-	assertPagesMetas(t, []string{"Home"}, ctx.Data["Pages"])
+	assertPagesMetas(t, []string{"Home", "Page With Image", "Page With Spaced Name"}, ctx.Data["Pages"])
 }
 
 func TestNewWiki(t *testing.T) {
@@ -185,3 +185,23 @@ func TestDeleteWikiPagePost(t *testing.T) {
 	assert.EqualValues(t, http.StatusOK, ctx.Resp.Status())
 	assertWikiNotExists(t, ctx.Repo.Repository, "Home")
 }
+
+func TestWikiRaw(t *testing.T) {
+	for filepath, filetype := range map[string]string{
+		"jpeg.jpg":                 "image/jpeg",
+		"Page With Spaced Name":    "text/plain; charset=utf-8",
+		"Page-With-Spaced-Name":    "text/plain; charset=utf-8",
+		"Page With Spaced Name.md": "text/plain; charset=utf-8",
+		"Page-With-Spaced-Name.md": "text/plain; charset=utf-8",
+	} {
+		models.PrepareTestEnv(t)
+
+		ctx := test.MockContext(t, "user2/repo1/wiki/raw/"+filepath)
+		ctx.SetParams("*", filepath)
+		test.LoadUser(t, ctx, 2)
+		test.LoadRepo(t, ctx, 1)
+		WikiRaw(ctx)
+		assert.EqualValues(t, http.StatusOK, ctx.Resp.Status())
+		assert.EqualValues(t, filetype, ctx.Resp.Header().Get("Content-Type"))
+	}
+}