Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/channels/api4/brand.go

@@ -0,0 +1,97 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package api4
+
+import (
+	"io"
+	"net/http"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/server/channels/audit"
+)
+
+func (api *API) InitBrand() {
+	api.BaseRoutes.Brand.Handle("/image", api.APIHandlerTrustRequester(getBrandImage)).Methods("GET")
+	api.BaseRoutes.Brand.Handle("/image", api.APISessionRequired(uploadBrandImage)).Methods("POST")
+	api.BaseRoutes.Brand.Handle("/image", api.APISessionRequired(deleteBrandImage)).Methods("DELETE")
+}
+
+func getBrandImage(c *Context, w http.ResponseWriter, r *http.Request) {
+	// No permission check required
+
+	img, err := c.App.GetBrandImage()
+	if err != nil {
+		w.WriteHeader(http.StatusNotFound)
+		w.Write(nil)
+		return
+	}
+
+	w.Header().Set("Content-Type", "image/png")
+	w.Write(img)
+}
+
+func uploadBrandImage(c *Context, w http.ResponseWriter, r *http.Request) {
+	defer io.Copy(io.Discard, r.Body)
+
+	if r.ContentLength > *c.App.Config().FileSettings.MaxFileSize {
+		c.Err = model.NewAppError("uploadBrandImage", "api.admin.upload_brand_image.too_large.app_error", nil, "", http.StatusRequestEntityTooLarge)
+		return
+	}
+
+	if err := r.ParseMultipartForm(*c.App.Config().FileSettings.MaxFileSize); err != nil {
+		c.Err = model.NewAppError("uploadBrandImage", "api.admin.upload_brand_image.parse.app_error", nil, "", http.StatusBadRequest)
+		return
+	}
+
+	m := r.MultipartForm
+
+	imageArray, ok := m.File["image"]
+	if !ok {
+		c.Err = model.NewAppError("uploadBrandImage", "api.admin.upload_brand_image.no_file.app_error", nil, "", http.StatusBadRequest)
+		return
+	}
+
+	if len(imageArray) <= 0 {
+		c.Err = model.NewAppError("uploadBrandImage", "api.admin.upload_brand_image.array.app_error", nil, "", http.StatusBadRequest)
+		return
+	}
+
+	auditRec := c.MakeAuditRecord("uploadBrandImage", audit.Fail)
+	defer c.LogAuditRec(auditRec)
+
+	if !c.App.SessionHasPermissionTo(*c.AppContext.Session(), model.PermissionEditBrand) {
+		c.SetPermissionError(model.PermissionEditBrand)
+		return
+	}
+
+	if err := c.App.SaveBrandImage(imageArray[0]); err != nil {
+		c.Err = err
+		return
+	}
+
+	auditRec.Success()
+	c.LogAudit("")
+
+	w.WriteHeader(http.StatusCreated)
+	ReturnStatusOK(w)
+}
+
+func deleteBrandImage(c *Context, w http.ResponseWriter, r *http.Request) {
+	auditRec := c.MakeAuditRecord("deleteBrandImage", audit.Fail)
+	defer c.LogAuditRec(auditRec)
+
+	if !c.App.SessionHasPermissionTo(*c.AppContext.Session(), model.PermissionEditBrand) {
+		c.SetPermissionError(model.PermissionEditBrand)
+		return
+	}
+
+	if err := c.App.DeleteBrandImage(); err != nil {
+		c.Err = err
+		return
+	}
+
+	auditRec.Success()
+
+	ReturnStatusOK(w)
+}