104 lines
3.2 KiB
Go
104 lines
3.2 KiB
Go
// OpenSAPS - Open Slack API server for everyone.
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//
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// Copyright (c) 2017, Stanislav N. aka pztrn.
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// All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package slack
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/url"
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"strings"
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slackmessage "go.dev.pztrn.name/opensaps/slack/message"
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)
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type Handler struct{}
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func (sh Handler) ServeHTTP(respwriter http.ResponseWriter, req *http.Request) {
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c.Log.Debug().Str("method", req.Method).Str("host", req.Host).Str("path", req.URL.Path).Msg("Received HTTP request")
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// We should catch only POST requests. Otherwise return HTTP 404.
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if req.Method != "POST" {
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c.Log.Debug().Msg("Not a POST request, returning HTTP 404")
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respwriter.WriteHeader(http.StatusNotFound)
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fmt.Fprintf(respwriter, "NOT FOUND")
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return
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}
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body, _ := ioutil.ReadAll(req.Body)
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req.Body.Close()
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c.Log.Debug().Msgf("Received body: %s", string(body))
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// Try to figure out where we should push received data.
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cfg := c.Config.GetConfig()
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var sentToPusher bool
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for name, config := range cfg.Webhooks {
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if strings.Contains(req.URL.Path, config.Slack.Random1) &&
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strings.Contains(req.URL.Path, config.Slack.Random2) &&
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strings.Contains(req.URL.Path, config.Slack.LongRandom) {
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c.Log.Debug().Msgf("Passed data belongs to '%s' and should go to '%s' pusher, protocol '%s'",
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name, config.Remote.PushTo, config.Remote.Pusher)
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// Parse message into SlackMessage structure.
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if strings.Contains(string(body)[0:7], "payload") {
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// We have HTTP form payload. It still should be a
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// parseable JSON string, we just need to do some
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// preparations.
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// First - remove "payload=" from the beginning.
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tempBody := string(body)
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tempBody = strings.Replace(tempBody, "payload=", "", 1)
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// Second - unescape data.
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tempBody, err := url.QueryUnescape(tempBody)
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if err != nil {
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c.Log.Error().Msg("Failed to decode body into parseable string!")
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return
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}
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// And finally - convert body back to bytes.
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body = []byte(tempBody)
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}
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// nolint:exhaustivestruct
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slackmsg := slackmessage.SlackMessage{}
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err := json.Unmarshal(body, &slackmsg)
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if err != nil {
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c.Log.Error().Err(err).Msg("Failed to decode JSON into SlackMessage struct")
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return
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}
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c.Log.Debug().Msgf("Received message: %+v", slackmsg)
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c.SendToPusher(config.Remote.Pusher, config.Remote.PushTo, slackmsg)
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sentToPusher = true
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}
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}
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if !sentToPusher {
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c.Log.Debug().Msg("Don't know where to push data. Ignoring with HTTP 404")
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respwriter.WriteHeader(http.StatusNotFound)
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fmt.Fprintf(respwriter, "NOT FOUND")
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}
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}
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