Port pam-any from pam-bindings to nonstick crateHEADmain

The pam-bindings crate has a critical bug where pam_try! returns
PAM_SUCCESS on error in release builds (anowell/pam-rs#16), causing
authentication to always succeed. This replaces it with nonstick
and a custom pam_client module with raw PAM FFI for thread-safe
conversation forwarding.

15 files changed, 1385 insertions, 143 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 4ac59f0..e91f854 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,41 +1,41 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "aho-corasick"
-version = "1.1.2"
+version = "1.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2969dcb958b36655471fc61f7e416fa76033bdd4bfed0678d8fee1e2d07a1f0"
+checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
 dependencies = [
  "memchr",
 ]
 
 [[package]]
 name = "bindgen"
-version = "0.69.4"
+version = "0.72.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a00dc851838a2120612785d195287475a3ac45514741da670b735818822129a0"
+checksum = "993776b509cfb49c750f11b8f07a46fa23e0a1386ffc01fb1e7d343efc387895"
 dependencies = [
  "bitflags",
  "cexpr",
  "clang-sys",
  "itertools",
- "lazy_static",
- "lazycell",
+ "log",
+ "prettyplease",
  "proc-macro2",
  "quote",
  "regex",
  "rustc-hash",
  "shlex",
- "syn 2.0.52",
+ "syn",
 ]
 
 [[package]]
 name = "bitflags"
-version = "2.4.2"
+version = "2.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed570934406eb16438a4e976b1b4500774099c13b8cb96eec99f620f05090ddf"
+checksum = "843867be96c8daad0d758b57df9392b6d8d271134fce549de6ce169ff98a92af"
 
 [[package]]
 name = "cexpr"
@@ -47,86 +47,98 @@ dependencies = [
 ]
 
 [[package]]
+name = "cfg-if"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
+
+[[package]]
 name = "clang-sys"
-version = "1.7.0"
+version = "1.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67523a3b4be3ce1989d607a828d036249522dd9c1c8de7f4dd2dae43a37369d1"
+checksum = "0b023947811758c97c59bf9d1c188fd619ad4718dcaa767947df1cadb14f39f4"
 dependencies = [
  "glob",
  "libc",
+ "libloading",
 ]
 
 [[package]]
-name = "crossbeam-channel"
-version = "0.5.12"
+name = "either"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab3db02a9c5b5121e1e42fbdb1aeb65f5e02624cc58c43f2884c6ccac0b82f95"
-dependencies = [
- "crossbeam-utils",
-]
+checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
 
 [[package]]
-name = "crossbeam-utils"
-version = "0.8.19"
+name = "equivalent"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "248e3bacc7dc6baa3b21e405ee045c3047101a49145e7e9eca583ab4c2ca5345"
+checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
 [[package]]
-name = "either"
-version = "1.10.0"
+name = "glob"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11157ac094ffbdde99aa67b23417ebdd801842852b500e395a45a9c0aac03e4a"
+checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280"
 
 [[package]]
-name = "glob"
-version = "0.3.1"
+name = "hashbrown"
+version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
+checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
 
 [[package]]
-name = "itertools"
-version = "0.12.1"
+name = "indexmap"
+version = "2.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba291022dbbd398a455acf126c1e341954079855bc60dfdda641363bd6922569"
+checksum = "7714e70437a7dc3ac8eb7e6f8df75fd8eb422675fc7678aff7364301092b1017"
 dependencies = [
- "either",
+ "equivalent",
+ "hashbrown",
 ]
 
 [[package]]
-name = "itoa"
-version = "1.0.10"
+name = "itertools"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1a46d1a171d865aa5f83f92695765caa047a9b4cbae2cbf37dbd613a793fd4c"
+checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
+dependencies = [
+ "either",
+]
 
 [[package]]
-name = "lazy_static"
-version = "1.4.0"
+name = "itoa"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+checksum = "92ecc6618181def0457392ccd0ee51198e065e016d1d527a7ac1b6dc7c1f09d2"
 
 [[package]]
-name = "lazycell"
-version = "1.3.0"
+name = "libc"
+version = "0.2.183"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
+checksum = "b5b646652bf6661599e1da8901b3b9522896f01e736bad5f723fe7a3a27f899d"
 
 [[package]]
-name = "libc"
-version = "0.2.153"
+name = "libloading"
+version = "0.8.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
+checksum = "d7c4b02199fee7c5d21a5ae7d8cfa79a6ef5bb2fc834d6e9058e89c825efdc55"
+dependencies = [
+ "cfg-if",
+ "windows-link",
+]
 
 [[package]]
 name = "log"
-version = "0.4.21"
+version = "0.4.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"
+checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
 
 [[package]]
 name = "memchr"
-version = "2.7.1"
+version = "2.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "523dc4f511e55ab87b694dc30d0f820d60906ef06413f93d4d7a1385599cc149"
+checksum = "f8ca58f447f06ed17d5fc4043ce1b10dd205e060fb3ce5b979b8ed8e59ff3f79"
 
 [[package]]
 name = "minimal-lexical"
@@ -145,85 +157,94 @@ dependencies = [
 ]
 
 [[package]]
-name = "pam"
-version = "0.8.0"
+name = "nonstick"
+version = "0.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ab553c52103edb295d8f7d6a3b593dc22a30b1fb99643c777a8f36915e285ba"
+checksum = "15669b8f01cf3dcad5bae6b2af9d03972657b8e8fca2fef6e43c5c223896d9ff"
 dependencies = [
+ "bindgen",
+ "bitflags",
  "libc",
- "memchr",
- "pam-macros",
- "pam-sys",
- "users",
+ "num_enum",
+ "secure-string",
+ "thiserror",
 ]
 
 [[package]]
-name = "pam-any"
-version = "0.1.0"
+name = "num_enum"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1207a7e20ad57b847bbddc6776b968420d38292bbfe2089accff5e19e82454c"
 dependencies = [
- "crossbeam-channel",
- "libc",
- "log",
- "pam",
- "pam-bindings",
- "serde",
- "serde_json",
- "termios",
+ "num_enum_derive",
+ "rustversion",
 ]
 
 [[package]]
-name = "pam-bindings"
-version = "0.1.1"
+name = "num_enum_derive"
+version = "0.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95c337e922acb6ab9c3ddd1016fed13957a5bf14f51b6caa293ddc8dd47660ca"
+checksum = "ff32365de1b6743cb203b710788263c44a03de03802daf96092f2da4fe6ba4d7"
+dependencies = [
+ "proc-macro-crate",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "pam-any"
+version = "0.2.0"
 dependencies = [
  "libc",
+ "nonstick",
+ "serde",
+ "serde_json",
+ "termios",
 ]
 
 [[package]]
-name = "pam-macros"
-version = "0.0.3"
+name = "prettyplease"
+version = "0.2.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c94f3b9b97df3c6d4e51a14916639b24e02c7d15d1dba686ce9b1118277cb811"
+checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
 dependencies = [
  "proc-macro2",
- "quote",
- "syn 1.0.109",
+ "syn",
 ]
 
 [[package]]
-name = "pam-sys"
-version = "1.0.0-alpha5"
+name = "proc-macro-crate"
+version = "3.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce9484729b3e52c0bacdc5191cb6a6a5f31ef4c09c5e4ab1209d3340ad9e997b"
+checksum = "e67ba7e9b2b56446f1d419b1d807906278ffa1a658a8a5d8a39dcb1f5a78614f"
 dependencies = [
- "bindgen",
- "libc",
+ "toml_edit",
 ]
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.79"
+version = "1.0.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e835ff2298f5721608eb1a980ecaee1aef2c132bf95ecc026a11b7bf3c01c02e"
+checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.35"
+version = "1.0.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
+checksum = "41f2619966050689382d2b44f664f4bc593e129785a36d6ee376ddf37259b924"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "regex"
-version = "1.10.3"
+version = "1.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b62dbe01f0b06f9d8dc7d49e05a0785f153b00b2c227856282f671e0318c9b15"
+checksum = "e10754a14b9137dd7b1e3e5b0493cc9171fdd105e0ab477f51b72e7f3ac0e276"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -233,9 +254,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.6"
+version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86b83b8b9847f9bf95ef68afb0b8e6cdb80f498442f5179a29fad448fcc1eaea"
+checksum = "6e1dd4122fc1595e8162618945476892eefca7b88c52820e74af6262213cae8f"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -244,51 +265,73 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.8.2"
+version = "0.8.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
+checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"
 
 [[package]]
 name = "rustc-hash"
-version = "1.1.0"
+version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
+checksum = "357703d41365b4b27c590e3ed91eabb1b663f07c4c084095e60cbed4362dff0d"
 
 [[package]]
-name = "ryu"
-version = "1.0.17"
+name = "rustversion"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e86697c916019a8588c99b5fac3cead74ec0b4b819707a682fd4d23fa0ce1ba1"
+checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d"
+
+[[package]]
+name = "secure-string"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "548ba8c9ff631f7bb3a64de1e8ad73fe20f6d04090724f2b496ed45314ad7488"
+dependencies = [
+ "libc",
+ "zeroize",
+]
 
 [[package]]
 name = "serde"
-version = "1.0.197"
+version = "1.0.228"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fb1c873e1b9b056a4dc4c0c198b24c3ffa059243875552b2bd0933b1aee4ce2"
+checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
+dependencies = [
+ "serde_core",
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.197"
+version = "1.0.228"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7eb0b34b42edc17f6b7cac84a52a1c5f0e1bb2227e997ca9011ea3dd34e8610b"
+checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.52",
+ "syn",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.114"
+version = "1.0.149"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c5f09b1bd632ef549eaa9f60a1f8de742bdbc698e6cee2095fc84dde5f549ae0"
+checksum = "83fc039473c5595ace860d8c4fafa220ff474b3fc6bfdb4293327f1a37e94d86"
 dependencies = [
  "itoa",
- "ryu",
+ "memchr",
  "serde",
+ "serde_core",
+ "zmij",
 ]
 
 [[package]]
@@ -299,9 +342,9 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
 [[package]]
 name = "syn"
-version = "1.0.109"
+version = "2.0.117"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
+checksum = "e665b8803e7b1d2a727f4023456bbbbe74da67099c585258af0ad9c5013b9b99"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -309,37 +352,93 @@ dependencies = [
 ]
 
 [[package]]
-name = "syn"
-version = "2.0.52"
+name = "termios"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "411c5bf740737c7918b8b1fe232dca4dc9f8e754b8ad5e20966814001ed0ac6b"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "thiserror"
+version = "2.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b699d15b36d1f02c3e7c69f8ffef53de37aefae075d8488d4ba1a7788d574a07"
+checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "2.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
 dependencies = [
  "proc-macro2",
  "quote",
- "unicode-ident",
+ "syn",
 ]
 
 [[package]]
-name = "termios"
-version = "0.3.3"
+name = "toml_datetime"
+version = "1.0.0+spec-1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "411c5bf740737c7918b8b1fe232dca4dc9f8e754b8ad5e20966814001ed0ac6b"
+checksum = "32c2555c699578a4f59f0cc68e5116c8d7cabbd45e1409b989d4be085b53f13e"
 dependencies = [
- "libc",
+ "serde_core",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.25.4+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7193cbd0ce53dc966037f54351dbbcf0d5a642c7f0038c382ef9e677ce8c13f2"
+dependencies = [
+ "indexmap",
+ "toml_datetime",
+ "toml_parser",
+ "winnow",
+]
+
+[[package]]
+name = "toml_parser"
+version = "1.0.9+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "702d4415e08923e7e1ef96cd5727c0dfed80b4d2fa25db9647fe5eb6f7c5a4c4"
+dependencies = [
+ "winnow",
 ]
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.12"
+version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
+checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
 [[package]]
-name = "users"
-version = "0.10.0"
+name = "windows-link"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
+
+[[package]]
+name = "winnow"
+version = "0.7.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa4227e95324a443c9fcb06e03d4d85e91aabe9a5a02aa818688b6918b6af486"
+checksum = "df79d97927682d2fd8adb29682d1140b343be4ac0f08fd68b7765d9c059d3945"
 dependencies = [
- "libc",
- "log",
+ "memchr",
 ]
+
+[[package]]
+name = "zeroize"
+version = "1.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b97154e67e32c85465826e8bcc1c59429aaaf107c1e4a9e53c8d8ccd5eff88d0"
+
+[[package]]
+name = "zmij"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
diff --git a/default.nix b/default.nix
index 4ae9a74..b9bd421 100644
--- a/default.nix
+++ b/default.nix
@@ -1,20 +1,14 @@
 {
   lib,
   rustPlatform,
-  fetchFromGitHub,
   pam,
 }:
 
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "pam-any";
-  version = "0-unstable-2024-11-20";
+  version = "0.2.0";
 
-  src = fetchFromGitHub {
-    owner = "ChocolateLoverRaj";
-    repo = "pam-any";
-    rev = "e77687709d092a6bb77e57a444403798855075c0";
-    hash = "sha256-em/vifkse1Qp3iX/oE1vHQK6UAoJvbhBOowhFhgQ+qw=";
-  };
+  src = ./src-repo;
 
   cargoLock = {
     lockFile = ./Cargo.lock;
@@ -28,23 +22,6 @@ rustPlatform.buildRustPackage (finalAttrs: {
     pam
   ];
 
-  # Support reading config from a file path instead of only inline JSON,
-  # since NixOS appends comments to PAM rule lines which breaks JSON parsing.
-  postPatch = ''
-    substituteInPlace src/lib.rs \
-      --replace-fail \
-        'let arg_string = args.iter().map(|s| s.to_str().unwrap()).collect::<Vec<_>>().join(" ");' \
-        'let arg_string = {
-            let joined = args.iter().map(|s| s.to_str().unwrap()).collect::<Vec<_>>().join(" ");
-            if joined.starts_with("/") {
-                std::fs::read_to_string(joined.split_whitespace().next().unwrap())
-                    .unwrap_or(joined)
-            } else {
-                joined
-            }
-        };'
-  '';
-
   # cdylib produces no binaries, only libpam_any.so
   installPhase = ''
     runHook preInstall
diff --git a/result b/result
deleted file mode 120000
index 26e2c1b..0000000
--- a/result
+++ /dev/null
@@ -1 +0,0 @@
-/nix/store/455520syawyk79pvc9in9fjq5yxxr7ii-pam-any-0-unstable-2024-11-20
\ No newline at end of file
diff --git a/src-repo/.gitignore b/src-repo/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/src-repo/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/src-repo/Cargo.lock b/src-repo/Cargo.lock
new file mode 100644
index 0000000..e91f854
--- /dev/null
+++ b/src-repo/Cargo.lock
@@ -0,0 +1,444 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "aho-corasick"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "bindgen"
+version = "0.72.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "993776b509cfb49c750f11b8f07a46fa23e0a1386ffc01fb1e7d343efc387895"
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+ "bitflags",
+ "cexpr",
+ "clang-sys",
+ "itertools",
+ "log",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "rustc-hash",
+ "shlex",
+ "syn",
+]
+
+[[package]]
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+checksum = "843867be96c8daad0d758b57df9392b6d8d271134fce549de6ce169ff98a92af"
+
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+version = "0.6.0"
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+
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+
+[[package]]
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+checksum = "0b023947811758c97c59bf9d1c188fd619ad4718dcaa767947df1cadb14f39f4"
+dependencies = [
+ "glob",
+ "libc",
+ "libloading",
+]
+
+[[package]]
+name = "either"
+version = "1.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
+
+[[package]]
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+
+[[package]]
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+checksum = "d7c4b02199fee7c5d21a5ae7d8cfa79a6ef5bb2fc834d6e9058e89c825efdc55"
+dependencies = [
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+ "windows-link",
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+
+[[package]]
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+[[package]]
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+
+[[package]]
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+ "num_enum",
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+dependencies = [
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+[[package]]
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+ "quote",
+ "syn",
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+[[package]]
+name = "pam-any"
+version = "0.2.0"
+dependencies = [
+ "libc",
+ "nonstick",
+ "serde",
+ "serde_json",
+ "termios",
+]
+
+[[package]]
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+[[package]]
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+[[package]]
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+ "regex-syntax",
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+dependencies = [
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+
+[[package]]
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+
+[[package]]
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+dependencies = [
+ "indexmap",
+ "toml_datetime",
+ "toml_parser",
+ "winnow",
+]
+
+[[package]]
+name = "toml_parser"
+version = "1.0.9+spec-1.1.0"
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+checksum = "702d4415e08923e7e1ef96cd5727c0dfed80b4d2fa25db9647fe5eb6f7c5a4c4"
+dependencies = [
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+
+[[package]]
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+
+[[package]]
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+checksum = "df79d97927682d2fd8adb29682d1140b343be4ac0f08fd68b7765d9c059d3945"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "zeroize"
+version = "1.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b97154e67e32c85465826e8bcc1c59429aaaf107c1e4a9e53c8d8ccd5eff88d0"
+
+[[package]]
+name = "zmij"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/src-repo/Cargo.toml b/src-repo/Cargo.toml
new file mode 100644
index 0000000..9c79c58
--- /dev/null
+++ b/src-repo/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "pam-any"
+version = "0.2.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+nonstick = "0.0.7"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+termios = "0.3.3"
+libc = "0.2"
diff --git a/src-repo/LICENSE b/src-repo/LICENSE
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/src-repo/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
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diff --git a/src-repo/README.md b/src-repo/README.md
new file mode 100644
index 0000000..b6d45a7
--- /dev/null
+++ b/src-repo/README.md
@@ -0,0 +1,35 @@
+# PAM Any
+A PAM module that runs multiple other PAM modules in parallel, succeeding as long as one of them succeeds.
+
+## Installation
+Install [Rust](https://www.rust-lang.org/learn/get-started)
+
+Build (`cargo build --release`)
+
+Copy the PAM module to the location where PAM modules belong
+```bash
+sudo cp target/release/libpam_any.so /lib64/security
+```
+Depending on the distro, the folder might be `/lib` or `/lib64`. On Fedora it's `/lib64`.
+
+Create / edit a file in `/etc/pam.d`. For example, `/etc/pam.d/sudo` for sudo authentication. Here is an example file:
+```
+auth sufficient libpam_any.so { "mode": "One", "modules": { "login": "Password", "pam-random": "Random Chance" } }
+```
+The text after `libpam_any.so` is a JSON object:
+`mode`: Can be either `"One"` or `"All"`. "One" means that you can authenticate with any of the specified methods. For example, you can *either* type your password or use your fingerprint. "All" means that you must authenticate all of the specified modules, but in any order.
+`modules`: Is an object where the key is a file that exists in `/etc/pam.d` and the value is the display name of the service. In the example above, `pam-any` will internally start PAM authentication based on the `/etc/pam.d/login` file (Text password), and `/etc/pam.d/pam-random` file [(A test module that randomly succeeds / fails)](https://github.com/ChocolateLoverRaj/pam-random). As soon as one of the two modules authenticates successfully, the `pam-any` module will authenticate successfully. If all sub-modules fail (wrong password), then `pam-any` will fail.
+
+## Development
+I created a VM to test stuff without messing up the distro I code in.
+- Create a Fedora VM (can probably be any distro)
+- Create a user named `test`
+- Enable SSH server
+- Enable root password
+- Enable root SSH
+- Setup password-less SSH login
+- Setup [`pam-random`](https://github.com/ChocolateLoverRaj/pam-random) as a 2nd test module
+- Update the `IP` variable in `test.sh`
+- Run `bash ./test.sh`
+- Inside the VM install `pamtester`
+- Inside the VM run `pamtester pam-any test authenticate`
diff --git a/src-repo/src/lib.rs b/src-repo/src/lib.rs
new file mode 100644
index 0000000..a32eb5e
--- /dev/null
+++ b/src-repo/src/lib.rs
@@ -0,0 +1,121 @@
+use std::collections::HashMap;
+use std::ffi::CStr;
+use std::sync::mpsc::channel;
+use std::sync::{Arc, Mutex};
+use std::thread;
+
+use nonstick::handle::PamHandleModule;
+use nonstick::{pam_hooks, ErrorCode, Flags, PamModule, Result as PamResult};
+
+use crate::pam_client::{Client, PamResult as PamClientResult};
+use serde::{Deserialize, Serialize};
+
+use crate::mode::Mode;
+use crate::pam_any_conversation::PamAnyConversation;
+use crate::raw_conv::RawConv;
+use crate::un_hide_input::un_hide_input;
+
+mod mode;
+mod pam_any_conversation;
+mod pam_client;
+mod raw_conv;
+mod un_hide_input;
+
+struct PamAny;
+pam_hooks!(PamAny);
+
+#[derive(Serialize, Deserialize, Debug)]
+struct Input {
+    mode: Mode,
+    modules: HashMap<String, String>,
+}
+
+impl<T: PamHandleModule> PamModule<T> for PamAny {
+    fn authenticate(handle: &mut T, args: Vec<&CStr>, _flags: Flags) -> PamResult<()> {
+        let arg_string = args
+            .iter()
+            .map(|s| s.to_str().unwrap_or(""))
+            .collect::<Vec<_>>()
+            .join(" ");
+
+        // Support reading config from a file path (for NixOS compatibility)
+        let config_string = if arg_string.starts_with('/') {
+            let path = arg_string.split_whitespace().next().unwrap_or("");
+            std::fs::read_to_string(path).map_err(|_| ErrorCode::ServiceError)?
+        } else {
+            arg_string
+        };
+
+        let input: Input =
+            serde_json::from_str(&config_string).map_err(|_| ErrorCode::ServiceError)?;
+
+        let user = handle.get_user(None)?.to_owned();
+
+        // Get the raw PAM conversation to share across threads.
+        let handle_ptr = handle as *mut T as *mut libc::c_void;
+        let conv = RawConv::from_pam_handle(handle_ptr)
+            .ok_or(ErrorCode::ConversationError)?;
+        let conv = Arc::new(Mutex::new(conv));
+
+        let (tx, rx) = channel::<PamClientResult<()>>();
+        let _handles: Vec<_> = input
+            .modules
+            .iter()
+            .map(|(service, service_display_name)| {
+                let service = service.to_owned();
+                let tx = tx.clone();
+                let conv = conv.clone();
+                let user = user.clone();
+                let service_display_name = service_display_name.to_owned();
+                thread::spawn(move || {
+                    let client = Client::with_conversation(
+                        &service,
+                        PamAnyConversation {
+                            service_display_name,
+                            user,
+                            conv,
+                        },
+                    );
+                    let result = match client {
+                        Ok(mut c) => c.authenticate(),
+                        Err(e) => Err(e),
+                    };
+                    let _ = tx.send(result);
+                })
+            })
+            .collect();
+
+        match input.mode {
+            Mode::One => {
+                let mut failed_modules = 0;
+                for result in rx {
+                    if result.is_ok() {
+                        let _ = un_hide_input();
+                        return Ok(());
+                    } else {
+                        failed_modules += 1;
+                        if failed_modules == input.modules.len() {
+                            return Err(ErrorCode::AuthenticationError);
+                        }
+                    }
+                }
+                Err(ErrorCode::AuthenticationError)
+            }
+            Mode::All => {
+                let mut successful_modules = 0;
+                for result in rx {
+                    if result.is_ok() {
+                        successful_modules += 1;
+                        if successful_modules == input.modules.len() {
+                            let _ = un_hide_input();
+                            return Ok(());
+                        }
+                    } else {
+                        return Err(ErrorCode::AuthenticationError);
+                    }
+                }
+                Err(ErrorCode::AuthenticationError)
+            }
+        }
+    }
+}
diff --git a/src-repo/src/mode.rs b/src-repo/src/mode.rs
new file mode 100644
index 0000000..8dbfb44
--- /dev/null
+++ b/src-repo/src/mode.rs
@@ -0,0 +1,7 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
+pub enum Mode {
+    One,
+    All
+}
diff --git a/src-repo/src/pam_any_conversation.rs b/src-repo/src/pam_any_conversation.rs
new file mode 100644
index 0000000..825cb6a
--- /dev/null
+++ b/src-repo/src/pam_any_conversation.rs
@@ -0,0 +1,48 @@
+use std::ffi::{CStr, CString};
+use std::sync::{Arc, Mutex};
+use std::thread;
+
+use crate::pam_client::Conversation;
+
+use crate::raw_conv::RawConv;
+
+pub struct PamAnyConversation {
+    pub service_display_name: String,
+    pub user: String,
+    pub conv: Arc<Mutex<RawConv>>,
+}
+
+impl Conversation for PamAnyConversation {
+    fn prompt_echo(&mut self, _msg: &CStr) -> Result<CString, ()> {
+        CString::new(self.user.as_str()).map_err(|_| ())
+    }
+
+    fn prompt_blind(&mut self, msg: &CStr) -> Result<CString, ()> {
+        let msg = msg.to_str().map_err(|_| ())?;
+        let conv = self.conv.lock().map_err(|_| ())?;
+        let response = conv.send_prompt(&format!("[{}] {}", self.service_display_name, msg))?;
+        response.ok_or(())
+    }
+
+    fn info(&mut self, msg: &CStr) {
+        let msg = msg.to_str().unwrap_or("");
+        let msg = format!("[{}] {}", self.service_display_name, msg);
+        let conv = self.conv.clone();
+        thread::spawn(move || {
+            if let Ok(conv) = conv.lock() {
+                let _ = conv.send_info(&msg);
+            }
+        });
+    }
+
+    fn error(&mut self, msg: &CStr) {
+        let msg = msg.to_str().unwrap_or("");
+        let msg = format!("[{}] {}", self.service_display_name, msg);
+        let conv = self.conv.clone();
+        thread::spawn(move || {
+            if let Ok(conv) = conv.lock() {
+                let _ = conv.send_error(&msg);
+            }
+        });
+    }
+}
diff --git a/src-repo/src/pam_client.rs b/src-repo/src/pam_client.rs
new file mode 100644
index 0000000..e0fbcc6
--- /dev/null
+++ b/src-repo/src/pam_client.rs
@@ -0,0 +1,166 @@
+use std::ffi::{CStr, CString};
+use std::ptr;
+
+const PAM_PROMPT_ECHO_OFF: libc::c_int = 1;
+const PAM_PROMPT_ECHO_ON: libc::c_int = 2;
+const PAM_ERROR_MSG: libc::c_int = 3;
+const PAM_TEXT_INFO: libc::c_int = 4;
+const PAM_SUCCESS: libc::c_int = 0;
+
+#[repr(C)]
+struct PamMessage {
+    msg_style: libc::c_int,
+    msg: *const libc::c_char,
+}
+
+#[repr(C)]
+struct PamResponse {
+    resp: *mut libc::c_char,
+    resp_retcode: libc::c_int,
+}
+
+type PamConvFn = unsafe extern "C" fn(
+    num_msg: libc::c_int,
+    msg: *mut *const PamMessage,
+    resp: *mut *mut PamResponse,
+    appdata_ptr: *mut libc::c_void,
+) -> libc::c_int;
+
+#[repr(C)]
+struct PamConv {
+    conv: PamConvFn,
+    appdata_ptr: *mut libc::c_void,
+}
+
+type PamHandle = libc::c_void;
+
+extern "C" {
+    fn pam_start(
+        service_name: *const libc::c_char,
+        user: *const libc::c_char,
+        pam_conversation: *const PamConv,
+        pamh: *mut *mut PamHandle,
+    ) -> libc::c_int;
+    fn pam_authenticate(pamh: *mut PamHandle, flags: libc::c_int) -> libc::c_int;
+    fn pam_end(pamh: *mut PamHandle, pam_status: libc::c_int) -> libc::c_int;
+}
+
+pub trait Conversation {
+    fn prompt_echo(&mut self, msg: &CStr) -> Result<CString, ()>;
+    fn prompt_blind(&mut self, msg: &CStr) -> Result<CString, ()>;
+    fn info(&mut self, msg: &CStr);
+    fn error(&mut self, msg: &CStr);
+}
+
+pub struct Client<C: Conversation> {
+    handle: *mut PamHandle,
+    // Box the conversation so the pointer in PamConv remains stable.
+    conversation: Box<C>,
+}
+
+unsafe extern "C" fn converse<C: Conversation>(
+    num_msg: libc::c_int,
+    msg: *mut *const PamMessage,
+    resp: *mut *mut PamResponse,
+    appdata_ptr: *mut libc::c_void,
+) -> libc::c_int {
+    let conv = &mut *(appdata_ptr as *mut C);
+    let count = num_msg as usize;
+
+    let responses = libc::calloc(count, std::mem::size_of::<PamResponse>()) as *mut PamResponse;
+    if responses.is_null() {
+        return libc::ENOMEM;
+    }
+
+    for i in 0..count {
+        let message = &*(*msg.add(i));
+        let c_msg = CStr::from_ptr(message.msg);
+        match message.msg_style {
+            PAM_PROMPT_ECHO_ON => match conv.prompt_echo(c_msg) {
+                Ok(s) => (*responses.add(i)).resp = libc::strdup(s.as_ptr()),
+                Err(_) => {
+                    free_responses(responses, count);
+                    return PAM_SUCCESS + 1;
+                }
+            },
+            PAM_PROMPT_ECHO_OFF => match conv.prompt_blind(c_msg) {
+                Ok(s) => (*responses.add(i)).resp = libc::strdup(s.as_ptr()),
+                Err(_) => {
+                    free_responses(responses, count);
+                    return PAM_SUCCESS + 1;
+                }
+            },
+            PAM_TEXT_INFO => conv.info(c_msg),
+            PAM_ERROR_MSG => conv.error(c_msg),
+            _ => {}
+        }
+    }
+
+    *resp = responses;
+    PAM_SUCCESS
+}
+
+unsafe fn free_responses(resp: *mut PamResponse, count: usize) {
+    for i in 0..count {
+        let r = &mut *resp.add(i);
+        if !r.resp.is_null() {
+            libc::free(r.resp as *mut libc::c_void);
+        }
+    }
+    libc::free(resp as *mut libc::c_void);
+}
+
+#[derive(Debug)]
+pub struct PamError(pub libc::c_int);
+
+pub type PamResult<T> = Result<T, PamError>;
+
+impl<C: Conversation> Client<C> {
+    pub fn with_conversation(service: &str, conversation: C) -> PamResult<Self> {
+        let mut conversation = Box::new(conversation);
+        let c_service = CString::new(service).map_err(|_| PamError(1))?;
+
+        let pam_conv = PamConv {
+            conv: converse::<C>,
+            appdata_ptr: &mut *conversation as *mut C as *mut libc::c_void,
+        };
+
+        let mut handle: *mut PamHandle = ptr::null_mut();
+        let ret = unsafe {
+            pam_start(
+                c_service.as_ptr(),
+                ptr::null(),
+                &pam_conv,
+                &mut handle,
+            )
+        };
+
+        if ret != PAM_SUCCESS {
+            return Err(PamError(ret));
+        }
+
+        Ok(Client {
+            handle,
+            conversation,
+        })
+    }
+
+    pub fn authenticate(&mut self) -> PamResult<()> {
+        let ret = unsafe { pam_authenticate(self.handle, 0) };
+        if ret == PAM_SUCCESS {
+            Ok(())
+        } else {
+            Err(PamError(ret))
+        }
+    }
+}
+
+impl<C: Conversation> Drop for Client<C> {
+    fn drop(&mut self) {
+        if !self.handle.is_null() {
+            unsafe {
+                pam_end(self.handle, PAM_SUCCESS);
+            }
+        }
+    }
+}
diff --git a/src-repo/src/raw_conv.rs b/src-repo/src/raw_conv.rs
new file mode 100644
index 0000000..fe93b64
--- /dev/null
+++ b/src-repo/src/raw_conv.rs
@@ -0,0 +1,116 @@
+use std::ffi::{CStr, CString};
+use std::ptr;
+
+const PAM_CONV: libc::c_int = 5;
+const PAM_PROMPT_ECHO_OFF: libc::c_int = 1;
+const PAM_PROMPT_ECHO_ON: libc::c_int = 2;
+const PAM_ERROR_MSG: libc::c_int = 3;
+const PAM_TEXT_INFO: libc::c_int = 4;
+
+#[repr(C)]
+struct PamMessage {
+    msg_style: libc::c_int,
+    msg: *const libc::c_char,
+}
+
+#[repr(C)]
+struct PamResponse {
+    resp: *mut libc::c_char,
+    resp_retcode: libc::c_int,
+}
+
+type PamConvFn = unsafe extern "C" fn(
+    num_msg: libc::c_int,
+    msg: *mut *const PamMessage,
+    resp: *mut *mut PamResponse,
+    appdata_ptr: *mut libc::c_void,
+) -> libc::c_int;
+
+#[repr(C)]
+struct PamConv {
+    conv: PamConvFn,
+    appdata_ptr: *mut libc::c_void,
+}
+
+extern "C" {
+    fn pam_get_item(
+        pamh: *const libc::c_void,
+        item_type: libc::c_int,
+        item: *mut *const libc::c_void,
+    ) -> libc::c_int;
+}
+
+/// Thread-safe wrapper around a raw PAM conversation function pointer.
+pub struct RawConv {
+    conv_fn: PamConvFn,
+    appdata_ptr: *mut libc::c_void,
+}
+
+unsafe impl Send for RawConv {}
+
+impl RawConv {
+    /// Extract the raw PAM conversation from a PAM handle.
+    pub fn from_pam_handle(pamh: *mut libc::c_void) -> Option<Self> {
+        unsafe {
+            let mut conv_ptr: *const libc::c_void = ptr::null();
+            let ret = pam_get_item(pamh, PAM_CONV, &mut conv_ptr);
+            if ret != 0 || conv_ptr.is_null() {
+                return None;
+            }
+            let pam_conv = &*(conv_ptr as *const PamConv);
+            Some(RawConv {
+                conv_fn: pam_conv.conv,
+                appdata_ptr: pam_conv.appdata_ptr,
+            })
+        }
+    }
+
+    /// Send a message through the PAM conversation.
+    /// Returns the response string for prompt types, or None for info/error.
+    pub fn send(&self, msg_style: libc::c_int, msg: &str) -> Result<Option<CString>, ()> {
+        let c_msg = CString::new(msg).map_err(|_| ())?;
+        let pam_msg = PamMessage {
+            msg_style,
+            msg: c_msg.as_ptr(),
+        };
+        let mut msg_ptr: *const PamMessage = &pam_msg;
+        let mut resp_ptr: *mut PamResponse = ptr::null_mut();
+
+        let ret = unsafe { (self.conv_fn)(1, &mut msg_ptr, &mut resp_ptr, self.appdata_ptr) };
+
+        if ret != 0 {
+            return Err(());
+        }
+
+        if resp_ptr.is_null() {
+            return Ok(None);
+        }
+
+        let response = unsafe {
+            let resp = &*resp_ptr;
+            let result = if resp.resp.is_null() {
+                None
+            } else {
+                let s = CStr::from_ptr(resp.resp).to_owned();
+                libc::free(resp.resp as *mut libc::c_void);
+                Some(s)
+            };
+            libc::free(resp_ptr as *mut libc::c_void);
+            result
+        };
+
+        Ok(response)
+    }
+
+    pub fn send_prompt(&self, msg: &str) -> Result<Option<CString>, ()> {
+        self.send(PAM_PROMPT_ECHO_OFF, msg)
+    }
+
+    pub fn send_info(&self, msg: &str) -> Result<Option<CString>, ()> {
+        self.send(PAM_TEXT_INFO, msg)
+    }
+
+    pub fn send_error(&self, msg: &str) -> Result<Option<CString>, ()> {
+        self.send(PAM_ERROR_MSG, msg)
+    }
+}
diff --git a/src-repo/src/un_hide_input.rs b/src-repo/src/un_hide_input.rs
new file mode 100644
index 0000000..6350739
--- /dev/null
+++ b/src-repo/src/un_hide_input.rs
@@ -0,0 +1,9 @@
+use std::io;
+use termios::{ECHO, ICANON, TCSANOW, tcsetattr, Termios};
+
+pub fn un_hide_input() -> io::Result<()> {
+    let mut termios = Termios::from_fd(libc::STDIN_FILENO)?;
+    termios.c_lflag |= ECHO | ICANON;
+    tcsetattr(libc::STDIN_FILENO, TCSANOW, &termios)?;
+    Ok(())
+}
\ No newline at end of file
diff --git a/src-repo/test.sh b/src-repo/test.sh
new file mode 100644
index 0000000..f27a9cf
--- /dev/null
+++ b/src-repo/test.sh
@@ -0,0 +1,5 @@
+IP=192.168.124.164
+
+cargo build
+scp ./pam-any root@$IP:/etc/pam.d
+scp ./target/debug/libpam_any.so root@$IP:/lib64/security
\ No newline at end of file