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# googerteller
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Audible feedback on just how much your browsing feeds into Google.
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By bert@hubertnet.nl / https://berthub.eu/
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Makes a little bit of noise any time your computer sends a packet to a
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tracker or a Google service, which excludes Google Cloud users.
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Demo video [in this tweet](https://twitter.com/bert_hu_bert/status/1561466204602220544)
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[Blog post with more videos](https://berthub.eu/articles/posts/tracker-beeper/)
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## Installing on OSX:
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If need be, install Homebrew via https://brew.sh/ as this will allow you to
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compile new software. To do so, copy paste the instruction under 'Install
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Homebrew' into the terminal app ([Apple
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help](https://support.apple.com/guide/terminal/open-or-quit-terminal-apd5265185d-f365-44cb-8b09-71a064a42125/mac)). This might take quite a while.
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It will also ask for your password.
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Then run:
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```
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brew tap robertjakub/teller
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brew install --HEAD googerteller
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```
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To then start the noise, enter:
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```
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sudo tcpdump -nql | teller
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```
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And it should work. For the last command, it may also again ask you to enter your
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password.
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## How to compile
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This will currently only work on Unix derived systems (like Linux, OSX and
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FreeBSD).
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You need a C++ compiler like `gcc-c++` and CMake for compiling the binary.
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You also need to install `libpcaudio` (`libpcaudio-dev` on Debian/Ubuntu, `pcaudiolib-devel` on Fedora/Red Hat).
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For OSX [this is a bit more work](https://github.com/espeak-ng/pcaudiolib#mac-os)
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Then do:
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```
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cmake .
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make
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```
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## How to run
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Start as:
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```
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sudo tcpdump -nql | ./teller
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```
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And cry.
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## Configuration
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Tracker data is read from `tracker.conf` which you should only edit if
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you've learned about more IP addresses for relevant trackers.
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In `teller.conf` you can edit for each tracker where the noise should end up
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(left or right channel), and what the frequency should be.
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## Data source
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The list of Google services IP addresses can be found on [this Google
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support page](https://support.google.com/a/answer/10026322?hl=en).
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Note that this splits out Google services and Google cloud user IP
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addresses. However, it appears the Google services set includes the cloud IP
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addresses, so you must check both sets before determining something is in
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fact a Google service and not a Google customer.
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# To run on a single process on Linux
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Or, to track a single process, fe `firefox`, start it and run:
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```shell
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sudo bpftrace netsendmsg.bt |
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grep --line-buffered ^$(pgrep firefox) |
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stdbuf -oL cut -f2 | ./cidr.py | ./teller
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```
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And cry.
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## Dependencies
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This software gratefully builds on:
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* [doctest](https://github.com/doctest/doctest) testing framework
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* [lpm](https://github.com/rmind/liblpm) Longest Prefix Match library
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* [Portable C Audio Library 1.2](https://github.com/espeak-ng/pcaudiolib) - which you need to install yourself
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* tcpdump of course
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