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annotate libpam-sys/src/aliases.rs @ 156:66e662cde087 default tip

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fix return type of get_authtok for weird PAMs
author Paul Fisher <paul@pfish.zone>
date Tue, 08 Jul 2025 01:04:30 -0400
parents 4b3a5095f68c
children
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1 //! Convenience aliases for complex types in PAM.
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2
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3 use super::{pam_conv, pam_handle, pam_message, pam_response, pam_set_data};
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4 use std::ffi::{c_int, c_void};
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5
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6 /// The type of [`pam_conv::conv`].
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7 ///
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8 /// The exact format of `messages` varies between Linux-PAM and other
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9 /// implementations. See `libpam_sys_helpers::PtrPtrVec` for details
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10 /// (and a workaround).
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11 ///
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12 /// ```no_run
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13 /// use libpam_sys::pam_conv;
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14 /// use libpam_sys::aliases::ConversationCallback;
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15 /// fn convo() -> ConversationCallback {
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16 /// // ...
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17 /// # unimplemented!()
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18 /// }
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19 /// let conv = pam_conv{conv: convo(), appdata_ptr: std::ptr::null_mut()};
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20 /// ```
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21 pub type ConversationCallback = unsafe extern "C" fn(
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22 num_msg: c_int,
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23 msg: *const *const pam_message,
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24 resp: *mut *mut pam_response,
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25 appdata: *mut c_void,
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26 ) -> c_int;
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27
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28 /// Alias for the callback to [`pam_set_data`].
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29 ///
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30 /// ```no_run
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31 /// # use std::ffi::CString;
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32 /// use libpam_sys::pam_set_data;
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33 /// use libpam_sys::aliases::CleanupCallback;
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34 /// # use libpam_sys::pam_handle;
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35 /// # let handle: *mut pam_handle = std::ptr::null_mut();
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36 /// # let mut my_data = 100;
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37 /// # let data_ptr = &mut my_data as *mut i32;
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38 /// fn cleanup() -> CleanupCallback {
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39 /// // ...
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40 /// # unimplemented!()
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41 /// }
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42 /// let name = CString::new("name").unwrap();
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43 /// unsafe {
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44 /// pam_set_data(handle, name.as_ptr().cast_mut(), data_ptr.cast(), cleanup());
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45 /// }
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46 /// ```
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47 pub type CleanupCallback =
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48 unsafe extern "C" fn(pamh: *mut pam_handle, data: *mut c_void, pam_end_status: c_int);