block media going back to Five9 voicestream

[snyk] fix vulnerability (#56 )
Co-authored-by: Markus Frindt <m.frindt@cognigy.com>
2026-10-04 02:04:22 +00:00 · 2022-10-20 23:05:34 -04:00 · 2022-10-20 21:35:55 -04:00
2 changed files with 12 additions and 1 deletions
@@ -1,4 +1,4 @@
-FROM --platform=linux/amd64 node:18.8.0-alpine as base
+FROM --platform=linux/amd64 node:18.9.0-alpine3.16 as base

 RUN apk --update --no-cache add --virtual .builds-deps build-base python3

@@ -80,6 +80,10 @@ class CallSession extends Emitter {
    return tp && -1 !== tp.indexOf('SAVP');
  }

+  get isFive9VoiceStream() {
+    return this.req.has('X-Five9-StreamingPairId');
+  }
+
  async connect() {
    const {sdp} = this.req.locals;
    this.logger.info('inbound call accepted for routing');
@@ -168,6 +172,13 @@ class CallSession extends Emitter {
        throw new Error('rtpengine failed: answer');
      }

+      /* special case: Five9 Voicestream calls do not advertise a:sendonly, though they should */
+      if (this.isFive9VoiceStream) {
+        this.logger.info('Voicestream call from Five9, blocking audio in the reverse direction');
+        const response = Promise.all([this.blockMedia(opts), this.blockDTMF(opts)]);
+        this.logger.debug({response}, 'response to blocMedia');
+      }
+
      let headers = {
        'From': createBLegFromHeader(this.req),
        'To': this.req.get('To'),
Author	SHA1	Message	Date
Dave Horton	dbedd7419e	block media going back to Five9 voicestream	2022-10-20 23:05:34 -04:00
Markus FrindtandMarkus Frindt	c4d07b517e	[snyk] fix vulnerability (#56 ) Co-authored-by: Markus Frindt <m.frindt@cognigy.com>	2022-10-20 21:35:55 -04:00