From 47250c6629416b628a19e5571ac89f7b4646418c Mon Sep 17 00:00:00 2001
From: Joram Wilander <jwawilander@gmail.com>
Date: Mon, 14 May 2018 10:24:58 -0400
Subject: Refactor context out of API packages (#8755)

* Refactor context out of API packages

* Update function names per feedback

* Move webhook handlers to web and fix web tests

* Move more webhook tests out of api package

* Fix static handler
---
 web/webhook.go | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 web/webhook.go

(limited to 'web/webhook.go')

diff --git a/web/webhook.go b/web/webhook.go
new file mode 100644
index 000000000..55cdeb9b5
--- /dev/null
+++ b/web/webhook.go
@@ -0,0 +1,101 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package web
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+
+	"github.com/gorilla/mux"
+	"github.com/gorilla/schema"
+
+	"github.com/mattermost/mattermost-server/mlog"
+	"github.com/mattermost/mattermost-server/model"
+)
+
+func (w *Web) InitWebhooks() {
+	w.MainRouter.Handle("/hooks/commands/{id:[A-Za-z0-9]+}", w.NewHandler(commandWebhook)).Methods("POST")
+	w.MainRouter.Handle("/hooks/{id:[A-Za-z0-9]+}", w.NewHandler(incomingWebhook)).Methods("POST")
+}
+
+func incomingWebhook(c *Context, w http.ResponseWriter, r *http.Request) {
+	params := mux.Vars(r)
+	id := params["id"]
+
+	r.ParseForm()
+
+	var err *model.AppError
+	incomingWebhookPayload := &model.IncomingWebhookRequest{}
+	contentType := r.Header.Get("Content-Type")
+	if strings.Split(contentType, "; ")[0] == "application/x-www-form-urlencoded" {
+		payload := strings.NewReader(r.FormValue("payload"))
+
+		incomingWebhookPayload, err = decodePayload(payload)
+		if err != nil {
+			c.Err = err
+			return
+		}
+	} else if strings.HasPrefix(contentType, "multipart/form-data") {
+		r.ParseMultipartForm(0)
+
+		decoder := schema.NewDecoder()
+		err := decoder.Decode(incomingWebhookPayload, r.PostForm)
+
+		if err != nil {
+			c.Err = model.NewAppError("incomingWebhook", "api.webhook.incoming.error", nil, err.Error(), http.StatusBadRequest)
+			return
+		}
+	} else {
+		incomingWebhookPayload, err = decodePayload(r.Body)
+		if err != nil {
+			c.Err = err
+			return
+		}
+	}
+
+	if c.App.Config().LogSettings.EnableWebhookDebugging {
+		mlog.Debug(fmt.Sprint("Incoming webhook received. Content=", incomingWebhookPayload.ToJson()))
+	}
+
+	err = c.App.HandleIncomingWebhook(id, incomingWebhookPayload)
+	if err != nil {
+		c.Err = err
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/plain")
+	w.Write([]byte("ok"))
+}
+
+func commandWebhook(c *Context, w http.ResponseWriter, r *http.Request) {
+	params := mux.Vars(r)
+	id := params["id"]
+
+	response, err := model.CommandResponseFromHTTPBody(r.Header.Get("Content-Type"), r.Body)
+	if err != nil {
+		c.Err = model.NewAppError("commandWebhook", "web.command_webhook.parse.app_error", nil, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	appErr := c.App.HandleCommandWebhook(id, response)
+	if appErr != nil {
+		c.Err = appErr
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/plain")
+	w.Write([]byte("ok"))
+}
+
+func decodePayload(payload io.Reader) (*model.IncomingWebhookRequest, *model.AppError) {
+	incomingWebhookPayload, decodeError := model.IncomingWebhookRequestFromJson(payload)
+
+	if decodeError != nil {
+		return nil, decodeError
+	}
+
+	return incomingWebhookPayload, nil
+}
-- 
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