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Make conversations type-safe (last big reorg) (REAL) (NOT CLICKBAIT) In previous versions of Conversation, you could send messages and then return messages of the wrong type or in the wrong order or whatever. The receiver would then have to make sure that there were the right number of messages and that each message was the right type. That's annoying. This change makes the `Message` enum a two-way channel, where the asker puts their question into it, and then the answerer (the conversation) puts the answer in and returns control to the asker. The asker then only has to pull the Answer of the type they wanted out of the message.
author Paul Fisher <paul@pfish.zone>
date Fri, 06 Jun 2025 22:21:17 -0400
parents ac6881304c78
children c30811b4afae
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1 //! A safe, nonstick interface to PAM.
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2 //!
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3 //! This implements a type-safe library to interact with PAM.
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4 //! Currently, it implements a subset of PAM useful for implementing a module.
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5 //!
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6 //! To write a new PAM module using this crate:
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7 //!
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8 //! 1. Create a `dylib` crate.
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9 //! 2. Implement a subset of the functions in the [`PamModule`] trait
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10 //! corresponding to what you want your module to do.
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11 //! In the simplest case (for a new password-based authenticator),
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12 //! this will be the [`PamModule::authenticate`] function.
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13 //! 3. Export your PAM module using the [`pam_hooks!`] macro.
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14 //! 4. Build and install the dynamic library.
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15 //! This usually entails placing it at
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16 //! <code>/usr/lib/security/pam_<var>your_module</var>.so</code>,
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17 //! or maybe
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18 //! <code>/usr/lib/<var>your-architecture</var>/security/pam_<var>your_module</var>.so</code>.
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19 //!
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20 //! For general information on writing PAM modules, see
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21 //! [The Linux-PAM Module Writers' Guide][module-guide]
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22 //!
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23 //! [module-guide]: https://www.chiark.greenend.org.uk/doc/libpam-doc/html/Linux-PAM_MWG.html
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25 // Temporary until everything is fully wired up.
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26 #![allow(dead_code)]
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28 pub mod constants;
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29 pub mod conv;
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30 pub mod module;
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32 pub mod handle;
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34 #[cfg(feature = "link")]
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35 mod pam_ffi;
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36
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37 #[cfg(feature = "link")]
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38 pub use crate::pam_ffi::{LibPamHandle, OwnedLibPamHandle};
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39 #[doc(inline)]
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40 pub use crate::{
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41 constants::{ErrorCode, Flags, Result},
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42 conv::{BinaryData, Conversation, SimpleConversation},
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43 handle::{PamHandleApplication, PamHandleModule, PamShared},
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44 module::PamModule,
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45 };