This has got to be one of the most stupid questions I've ever asked
online ...
I have a need of a "helper function" that takes a string someone would
"want to send an e-mail to", i.e., something like an RFC 5322 "address"
token, as used in a "To:" header, and extract just the actual e-mail
address(es) from it. (The capability to deal with lists of *several*
recipients is likely optional.)
I found a certain number of *libraries* for various programming
languages that offer such a functionality¹, but I would prefer an
executable from some run-of-the-mill Linux/UNIX package to be called by
shell command. Considering that pretty much every MTA and MUA must
contain such functionality (to construct an SMTP envelope for a mail to
be sent), and then some (I looked into, e.g., procmail), I'm surprised
that apparently none of them *expose* it. (I seem to remember that the
original "sendmail -bt" came somewhat close at least ...)
Does anyone have an idea what tool I could (ab)use for that purpose?
¹ Namely:
-- parseaddr() for python
https://documentation.help/Python-PEP/module-email.Utils.html
-- maildrop for C
https://www.courier-mta.org/maildrop/rfc822.html
-- mail_parser for Rust
https://docs.rs/mail-parser/latest/mail_parser/
-- address-rfc2822 for JavaScript
https://www.npmjs.com/package/address-rfc2822
-- mailparse-rfc822-parse-addresses for PHP
https://www.php.net/manual/en/function.mailparse-rfc822-parse-addresses.php
-- mail-header-parse-address for LISP
https://www.gnu.org/software/emacs/manual/html_node/emacs-mime/Interface-Functions.html#index-mail_002dheader_002dparse_002daddress
-- and I suppose you could try to stuff the syntax definition into
some parser code generator, too
https://www.rfc-editor.org/rfc/rfc5322#section-3.4
Thanks in advance,
--
Jochen Bern
Systemingenieur
Binect GmbH
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