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annotate libpam-sys/libpam-sys-test/build.rs @ 118:39760dfc9b3b

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Detect PAM library based only on system lib; rename minimal lib to XSso. Also formats and assorted other cleanup.
author Paul Fisher <paul@pfish.zone>
date Sun, 29 Jun 2025 20:13:03 -0400
parents 93d423b65555
children 397743cb70e2
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110
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1 use bindgen::MacroTypeVariation;
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2 use libpam_sys_impls::cfg_pam_impl;
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3 use quote::{format_ident, ToTokens};
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4 use std::path::PathBuf;
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5 use std::{env, fs};
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6 use syn::{Item, ItemConst, Type, TypePath};
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7
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8 fn main() {
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9 generate_const_test();
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10 }
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11
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12 #[cfg_pam_impl("LinuxPam")]
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13 fn test_config() -> TestConfig {
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14 TestConfig {
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15 headers: vec![
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16 "security/_pam_types.h".into(),
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17 "security/pam_appl.h".into(),
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18 "security/pam_ext.h".into(),
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19 "security/pam_modules.h".into(),
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20 ],
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21 ignore_consts: vec![
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22 "__LINUX_PAM__".into(),
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23 "__LINUX_PAM_MINOR__".into(),
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24 "PAM_AUTHTOK_RECOVER_ERR".into(),
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25 ],
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26 }
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27 }
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28
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29 #[cfg_pam_impl("OpenPam")]
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30 fn test_config() -> TestConfig {
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31 TestConfig {
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32 headers: vec![
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33 "security/pam_types.h".into(),
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34 "security/openpam.h".into(),
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35 "security/pam_appl.h".into(),
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36 "security/pam_constants.h".into(),
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37 ],
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38 ignore_consts: vec![
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39 "OPENPAM_VERSION".into(),
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40 "OPENPAM_RELEASE".into(),
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41 "PAM_SOEXT".into(),
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42 ],
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43 }
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44 }
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45
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46 #[cfg_pam_impl(not(any("LinuxPam", "OpenPam")))]
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47 fn test_config() -> TestConfig {
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48 panic!("This PAM implementation is not yet tested.")
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49 }
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50
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51 fn generate_const_test() {
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52 let config = test_config();
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53 let builder = bindgen::Builder::default()
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54 .header_contents("_.h", &config.header_contents())
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55 .merge_extern_blocks(true)
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56 .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
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57 .blocklist_type(".*")
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58 .blocklist_function(".*")
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59 .allowlist_var(".*")
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60 .default_macro_constant_type(MacroTypeVariation::Signed);
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61
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62 let generated = builder.generate().unwrap().to_string();
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63 let file = syn::parse_file(&generated).unwrap();
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64 let mut tests = vec![];
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65 tests.push("{".into());
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66 tests.extend(
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67 file.items
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68 .iter()
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69 .filter_map(|item| {
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70 if let Item::Const(item) = item {
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71 Some(item)
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72 } else {
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73 None
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74 }
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75 })
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76 .filter(|item| config.should_check_const(item))
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77 .cloned()
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78 .map(|mut item| {
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79 item.ty = Box::new(Type::Path(TypePath {
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80 qself: None,
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81 path: format_ident!("i32").into(),
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82 }));
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83 format!(
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84 "assert_eq!({tokens}, libpam_sys::{name});",
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85 tokens = item.expr.to_token_stream(),
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86 name = item.ident
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87 )
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88 }),
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89 );
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90 tests.push("}".into());
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91 fs::write(
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92 PathBuf::from(env::var("OUT_DIR").unwrap()).join("constant_test.rs"),
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93 tests.join("\n"),
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94 )
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95 .unwrap();
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96 }
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97
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98 struct TestConfig {
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99 headers: Vec<String>,
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100 ignore_consts: Vec<String>,
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101 }
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102
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103 impl TestConfig {
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104 fn header_contents(&self) -> String {
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105 let vec: Vec<_> = self
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106 .headers
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107 .iter()
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108 .map(|h| format!("#include <{h}>\n"))
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109 .collect();
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110 vec.join("")
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111 }
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112
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113 fn should_check_const(&self, item: &ItemConst) -> bool {
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114 !self.ignore_consts.contains(&item.ident.to_string())
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115 }
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116 }