crates/nonstick: src/pam_ffi/handle.rs annotate

annotate src/pam_ffi/handle.rs @ 73:ac6881304c78

Do conversations, along with way too much stuff. This implements conversations, along with all the memory management brouhaha that goes along with it. The conversation now lives directly on the handle rather than being a thing you have to get from it and then call manually. It Turns Out this makes things a lot easier! I guess we reorganized things again. For the last time. For real. I promise. This all passes ASAN, so it seems Pretty Good!

author	Paul Fisher <paul@pfish.zone>
date	Thu, 05 Jun 2025 03:41:38 -0400
parents
children	c7c596e6388f

rev	line source
73 ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	1 use super::conversation::LibPamConversation;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	2 use crate::constants::{ErrorCode, InvalidEnum, Result};
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	3 use crate::conv::Message;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	4 use crate::handle::{PamApplicationOnly, PamModuleOnly, PamShared};
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	5 use crate::pam_ffi::memory;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	6 use crate::pam_ffi::memory::Immovable;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	7 use crate::{Conversation, Response};
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	8 use num_derive::FromPrimitive;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	9 use num_traits::FromPrimitive;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	10 use std::ffi::{c_char, c_int};
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	11 use std::ops::{Deref, DerefMut};
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	12 use std::result::Result as StdResult;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	13 use std::{mem, ptr};
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	14
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	15 /// An owned PAM handle.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	16 #[repr(transparent)]
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	17 pub struct OwnedLibPamHandle(*mut LibPamHandle);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	18
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	19 /// An opaque structure that a PAM handle points to.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	20 #[repr(C)]
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	21 pub struct LibPamHandle {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	22 _data: (),
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	23 _marker: Immovable,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	24 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	25
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	26 impl LibPamHandle {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	27 /// Gets a C string item.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	28 ///
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	29 /// # Safety
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	30 ///
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	31 /// You better be requesting an item which is a C string.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	32 unsafe fn get_cstr_item(&mut self, item_type: ItemType) -> Result<Option<&str>> {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	33 let mut output = ptr::null();
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	34 let ret = unsafe { super::pam_get_item(self, item_type as c_int, &mut output) };
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	35 ErrorCode::result_from(ret)?;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	36 memory::wrap_string(output.cast())
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	37 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	38
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	39 /// Sets a C string item.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	40 ///
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	41 /// # Safety
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	42 ///
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	43 /// You better be setting an item which is a C string.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	44 unsafe fn set_cstr_item(&mut self, item_type: ItemType, data: Option<&str>) -> Result<()> {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	45 let data_str = memory::option_cstr(data)?;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	46 let ret = unsafe {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	47 super::pam_set_item(
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	48 self,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	49 item_type as c_int,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	50 memory::prompt_ptr(data_str.as_ref()).cast(),
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	51 )
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	52 };
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	53 ErrorCode::result_from(ret)
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	54 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	55
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	56 /// Gets the `PAM_CONV` item from the handle.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	57 fn conversation_item(&mut self) -> Result<&mut LibPamConversation> {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	58 let output: *mut LibPamConversation = ptr::null_mut();
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	59 let result = unsafe {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	60 super::pam_get_item(
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	61 self,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	62 ItemType::Conversation.into(),
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	63 &mut output.cast_const().cast(),
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	64 )
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	65 };
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	66 ErrorCode::result_from(result)?;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	67 // SAFETY: We got this result from PAM, and we're checking if it's null.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	68 unsafe { output.as_mut() }.ok_or(ErrorCode::ConversationError)
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	69 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	70 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	71
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	72 impl PamApplicationOnly for OwnedLibPamHandle {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	73 fn close(self, status: Result<()>) -> Result<()> {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	74 let ret = unsafe { super::pam_end(self.0, ErrorCode::result_to_c(status)) };
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	75 // Forget rather than dropping, since dropping also calls pam_end.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	76 mem::forget(self);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	77 ErrorCode::result_from(ret)
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	78 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	79 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	80
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	81 impl Deref for OwnedLibPamHandle {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	82 type Target = LibPamHandle;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	83 fn deref(&self) -> &Self::Target {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	84 unsafe { &*self.0 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	85 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	86 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	87
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	88 impl DerefMut for OwnedLibPamHandle {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	89 fn deref_mut(&mut self) -> &mut Self::Target {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	90 unsafe { &mut *self.0 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	91 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	92 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	93
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	94 impl Drop for OwnedLibPamHandle {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	95 /// Ends the PAM session with a zero error code.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	96 /// You probably want to call [`close`](Self::close) instead of
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	97 /// letting this drop by itself.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	98 fn drop(&mut self) {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	99 unsafe {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	100 super::pam_end(self.0, 0);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	101 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	102 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	103 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	104
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	105 macro_rules! cstr_item {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	106 (get = $getter:ident, item = $item_type:path) => {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	107 fn $getter(&mut self) -> Result<Option<&str>> {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	108 unsafe { self.get_cstr_item($item_type) }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	109 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	110 };
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	111 (set = $setter:ident, item = $item_type:path) => {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	112 fn $setter(&mut self, value: Option<&str>) -> Result<()> {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	113 unsafe { self.set_cstr_item($item_type, value) }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	114 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	115 };
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	116 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	117
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	118 impl PamShared for LibPamHandle {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	119 fn get_user(&mut self, prompt: Option<&str>) -> Result<&str> {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	120 let prompt = memory::option_cstr(prompt)?;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	121 let mut output: *const c_char = ptr::null();
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	122 let ret =
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	123 unsafe { super::pam_get_user(self, &mut output, memory::prompt_ptr(prompt.as_ref())) };
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	124 ErrorCode::result_from(ret)?;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	125 unsafe { memory::wrap_string(output) }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	126 .transpose()
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	127 .unwrap_or(Err(ErrorCode::ConversationError))
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	128 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	129
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	130 cstr_item!(get = user_item, item = ItemType::User);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	131 cstr_item!(set = set_user_item, item = ItemType::User);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	132 cstr_item!(get = service, item = ItemType::Service);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	133 cstr_item!(set = set_service, item = ItemType::Service);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	134 cstr_item!(get = user_prompt, item = ItemType::UserPrompt);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	135 cstr_item!(set = set_user_prompt, item = ItemType::UserPrompt);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	136 cstr_item!(get = tty_name, item = ItemType::Tty);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	137 cstr_item!(set = set_tty_name, item = ItemType::Tty);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	138 cstr_item!(get = remote_user, item = ItemType::RemoteUser);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	139 cstr_item!(set = set_remote_user, item = ItemType::RemoteUser);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	140 cstr_item!(get = remote_host, item = ItemType::RemoteHost);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	141 cstr_item!(set = set_remote_host, item = ItemType::RemoteHost);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	142 cstr_item!(set = set_authtok_item, item = ItemType::AuthTok);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	143 cstr_item!(set = set_old_authtok_item, item = ItemType::OldAuthTok);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	144 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	145
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	146 impl Conversation for LibPamHandle {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	147 fn converse(&mut self, messages: &[Message]) -> Result<Vec<Response>> {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	148 self.conversation_item()?.converse(messages)
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	149 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	150 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	151
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	152 impl PamModuleOnly for LibPamHandle {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	153 fn get_authtok(&mut self, prompt: Option<&str>) -> Result<&str> {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	154 let prompt = memory::option_cstr(prompt)?;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	155 let mut output: *const c_char = ptr::null_mut();
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	156 // SAFETY: We're calling this with known-good values.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	157 let res = unsafe {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	158 super::pam_get_authtok(
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	159 self,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	160 ItemType::AuthTok.into(),
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	161 &mut output,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	162 memory::prompt_ptr(prompt.as_ref()),
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	163 )
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	164 };
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	165 ErrorCode::result_from(res)?;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	166 // SAFETY: We got this string from PAM.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	167 unsafe { memory::wrap_string(output) }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	168 .transpose()
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	169 .unwrap_or(Err(ErrorCode::ConversationError))
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	170 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	171
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	172 cstr_item!(get = authtok_item, item = ItemType::AuthTok);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	173 cstr_item!(get = old_authtok_item, item = ItemType::OldAuthTok);
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	174 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	175
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	176 /// Function called at the end of a PAM session that is called to clean up
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	177 /// a value previously provided to PAM in a `pam_set_data` call.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	178 ///
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	179 /// You should never call this yourself.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	180 extern "C" fn set_data_cleanup<T>(_: const libc::c_void, c_data: mut libc::c_void, _: c_int) {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	181 unsafe {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	182 let _data: Box<T> = Box::from_raw(c_data.cast());
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	183 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	184 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	185
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	186 /// Identifies what is being gotten or set with `pam_get_item`
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	187 /// or `pam_set_item`.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	188 #[derive(FromPrimitive)]
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	189 #[repr(i32)]
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	190 #[non_exhaustive] // because C could give us anything!
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	191 pub enum ItemType {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	192 /// The PAM service name.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	193 Service = 1,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	194 /// The user's login name.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	195 User = 2,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	196 /// The TTY name.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	197 Tty = 3,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	198 /// The remote host (if applicable).
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	199 RemoteHost = 4,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	200 /// The conversation struct (not a CStr-based item).
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	201 Conversation = 5,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	202 /// The authentication token (password).
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	203 AuthTok = 6,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	204 /// The old authentication token (when changing passwords).
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	205 OldAuthTok = 7,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	206 /// The remote user's name.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	207 RemoteUser = 8,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	208 /// The prompt shown when requesting a username.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	209 UserPrompt = 9,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	210 /// App-supplied function to override failure delays.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	211 FailDelay = 10,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	212 /// X display name.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	213 XDisplay = 11,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	214 /// X server authentication data.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	215 XAuthData = 12,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	216 /// The type of `pam_get_authtok`.
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	217 AuthTokType = 13,
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	218 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	219
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	220 impl TryFrom<c_int> for ItemType {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	221 type Error = InvalidEnum<Self>;
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	222 fn try_from(value: c_int) -> StdResult<Self, Self::Error> {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	223 Self::from_i32(value).ok_or(value.into())
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	224 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	225 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	226
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	227 impl From<ItemType> for c_int {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	228 fn from(val: ItemType) -> Self {
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	229 val as Self
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	230 }
ac6881304c78 Do conversations, along with way too much stuff. Paul Fisher <paul@pfish.zone> parents: diff changeset	231 }

Mercurial > crates > nonstick

annotate src/pam_ffi/handle.rs @ 73:ac6881304c78