1.6 KiB
purr-c
This is a pure C client for the PurritoBin pastebin server, and uses PurritoBin's author's instance in https://bsd.ac by default.
It was written as an exercise in learning network and crypto libraries, and uses
BearSSL for symmetric encryption (supported by
PurritoBin's online interface as well as its suggested
clients) and SSL
interaction with the server. For now, it also depends on
s6-networking's sbearssl library
for certificate parsing.
libbaseencode has been
vendored in (can be found in external/libbaseencode), but has also gone
through some changes, namely removing null-byte checking from the base64
encoding function and adding an output length parameter to the base64 decoding
function.
The code has a few instances of // TODO: remove hack comments and the like,
which I hope to get to someday.
Usage
Usage information can be viewed with purr -h.
Build dependencies
The build dependencies are the ones listed above: BearSSL and s6-networking, as
well as GNU Make and a C compiler. This currently depends on Linux's
getrandom(2) function, but I plan on adding at least an arc4random_buf(3)
implementation.
Acknowledgements
- Thomas Pornin for BearSSL
- Laurent Bercot for s6-networking
- epsilon-0 for PurritoBin (and the valuable help while I was testing this program)
- paolostivanin for libbaseencode