add proxmox-tfa crate

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

Cargo.toml

@@ -4,6 +4,7 @@ members = [
     "proxmox-api-macro",
     "proxmox-http",
     "proxmox-sortable-macro",
+    "proxmox-tfa",
 ]
 exclude = [
     "build",

Makefile

@@ -1,6 +1,11 @@
 # Shortcut for common operations:
 
-CRATES=proxmox proxmox-api-macro proxmox-http proxmox-sortable-macro
+CRATES = \
+	 proxmox \
+	 proxmox-api-macro \
+	 proxmox-http \
+	 proxmox-sortable-macro \
+	 proxmox-tfa
 
 # By default we just run checks:
 .PHONY: all

proxmox-tfa/Cargo.toml

@@ -0,0 +1,25 @@
+[package]
+name = "proxmox-tfa"
+version = "1.0.0"
+authors = ["Proxmox Support Team <support@proxmox.com>"]
+edition = "2018"
+license = "AGPL-3"
+description = "tfa implementation for totp and u2f"
+
+exclude = [ "debian" ]
+
+[dependencies]
+anyhow = "1.0"
+base32 = "0.4"
+base64 = "0.12"
+hex = "0.4"
+openssl = "0.10"
+percent-encoding = "2.1"
+serde = "1.0"
+serde_plain = "1.0"
+serde_json = { version = "1.0", optional = true }
+libc = { version = "0.2", optional = true }
+
+[features]
+default = []
+u2f = [ "libc", "serde_json", "serde/derive" ]

proxmox-tfa/debian/changelog

@@ -0,0 +1,5 @@
+rust-proxmox-tfa (1.0.0-1) stable; urgency=medium
+
+  * initial split out of `librust-proxmox-dev`
+
+ -- Proxmox Support Team <support@proxmox.com>  Mon, 04 Oct 2021 11:38:53 +0200

proxmox-tfa/debian/control

@@ -0,0 +1,97 @@
+Source: rust-proxmox-tfa
+Section: rust
+Priority: optional
+Build-Depends: debhelper (>= 12),
+ dh-cargo (>= 24),
+ cargo:native <!nocheck>,
+ rustc:native <!nocheck>,
+ libstd-rust-dev <!nocheck>,
+ librust-anyhow-1+default-dev <!nocheck>,
+ librust-base32-0.4+default-dev <!nocheck>,
+ librust-base64-0.12+default-dev <!nocheck>,
+ librust-hex-0.4+default-dev <!nocheck>,
+ librust-openssl-0.10+default-dev <!nocheck>,
+ librust-percent-encoding-2+default-dev (>= 2.1-~~) <!nocheck>,
+ librust-serde-1+default-dev <!nocheck>,
+ librust-serde-plain-1+default-dev <!nocheck>
+Maintainer: Proxmox Support Team <support@proxmox.com>
+Standards-Version: 4.5.1
+Vcs-Git: git://git.proxmox.com/git/proxmox.git
+Vcs-Browser: https://git.proxmox.com/?p=proxmox.git
+Rules-Requires-Root: no
+
+Package: librust-proxmox-tfa-dev
+Architecture: any
+Multi-Arch: same
+Depends:
+ ${misc:Depends},
+ librust-anyhow-1+default-dev,
+ librust-base32-0.4+default-dev,
+ librust-base64-0.12+default-dev,
+ librust-hex-0.4+default-dev,
+ librust-openssl-0.10+default-dev,
+ librust-percent-encoding-2+default-dev (>= 2.1-~~),
+ librust-serde-1+default-dev,
+ librust-serde-plain-1+default-dev
+Suggests:
+ librust-proxmox-tfa+libc-dev (= ${binary:Version}),
+ librust-proxmox-tfa+serde-json-dev (= ${binary:Version}),
+ librust-proxmox-tfa+u2f-dev (= ${binary:Version})
+Provides:
+ librust-proxmox-tfa+default-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1+default-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1.0-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1.0+default-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1.0.0-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1.0.0+default-dev (= ${binary:Version})
+Description: Tfa implementation for totp and u2f - Rust source code
+ This package contains the source for the Rust proxmox-tfa crate, packaged by
+ debcargo for use with cargo and dh-cargo.
+
+Package: librust-proxmox-tfa+libc-dev
+Architecture: any
+Multi-Arch: same
+Depends:
+ ${misc:Depends},
+ librust-proxmox-tfa-dev (= ${binary:Version}),
+ librust-libc-0.2+default-dev
+Provides:
+ librust-proxmox-tfa-1+libc-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1.0+libc-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1.0.0+libc-dev (= ${binary:Version})
+Description: Tfa implementation for totp and u2f - feature "libc"
+ This metapackage enables feature "libc" for the Rust proxmox-tfa crate, by
+ pulling in any additional dependencies needed by that feature.
+
+Package: librust-proxmox-tfa+serde-json-dev
+Architecture: any
+Multi-Arch: same
+Depends:
+ ${misc:Depends},
+ librust-proxmox-tfa-dev (= ${binary:Version}),
+ librust-serde-json-1+default-dev
+Provides:
+ librust-proxmox-tfa-1+serde-json-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1.0+serde-json-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1.0.0+serde-json-dev (= ${binary:Version})
+Description: Tfa implementation for totp and u2f - feature "serde_json"
+ This metapackage enables feature "serde_json" for the Rust proxmox-tfa crate,
+ by pulling in any additional dependencies needed by that feature.
+
+Package: librust-proxmox-tfa+u2f-dev
+Architecture: any
+Multi-Arch: same
+Depends:
+ ${misc:Depends},
+ librust-proxmox-tfa-dev (= ${binary:Version}),
+ librust-libc-0.2+default-dev,
+ librust-serde-1+derive-dev,
+ librust-serde-json-1+default-dev
+Provides:
+ librust-proxmox-tfa-1+u2f-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1.0+u2f-dev (= ${binary:Version}),
+ librust-proxmox-tfa-1.0.0+u2f-dev (= ${binary:Version})
+Description: Tfa implementation for totp and u2f - feature "u2f"
+ This metapackage enables feature "u2f" for the Rust proxmox-tfa crate, by
+ pulling in any additional dependencies needed by that feature.

proxmox-tfa/debian/copyright

@@ -0,0 +1,16 @@
+Copyright (C) 2021 Proxmox Server Solutions GmbH
+
+This software is written by Proxmox Server Solutions GmbH <support@proxmox.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.

proxmox-tfa/debian/debcargo.toml

@@ -0,0 +1,7 @@
+overlay = "."
+crate_src_path = ".."
+maintainer = "Proxmox Support Team <support@proxmox.com>"
+
+[source]
+vcs_git = "git://git.proxmox.com/git/proxmox.git"
+vcs_browser = "https://git.proxmox.com/?p=proxmox.git"

proxmox-tfa/src/totp.rs

@@ -1,4 +1,4 @@
-//! Implementation of TOTP, U2F and other mechanisms.
+//! TOTP implementation.
 
 use std::convert::TryFrom;
 use std::fmt;
@@ -172,7 +172,7 @@ impl Totp {
 
     /// Create a new OTP secret key builder using a secret specified in hexadecimal bytes.
     pub fn builder_from_hex(secret: &str) -> Result<TotpBuilder, Error> {
-        crate::tools::hex_to_bin(secret).map(|secret| Self::builder().secret(secret))
+        Ok(Self::builder().secret(hex::decode(secret)?))
     }
 
     /// Get the secret key in binary form.
@@ -394,7 +394,7 @@ impl std::str::FromStr for Totp {
     }
 }
 
-crate::forward_deserialize_to_from_str!(Totp);
+serde_plain::derive_deserialize_from_fromstr!(Totp, "valid TOTP url");
 
 impl Serialize for Totp {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

proxmox-tfa/src/u2f.rs

@@ -1,6 +1,7 @@
 //! U2F implementation.
 
 use std::mem::MaybeUninit;
+use std::io;
 
 use anyhow::{bail, format_err, Error};
 use openssl::ec::{EcGroup, EcKey, EcPoint};
@@ -10,8 +11,6 @@ use openssl::sha;
 use openssl::x509::X509;
 use serde::{Deserialize, Serialize};
 
-use crate::tools::serde::{bytes_as_base64, bytes_as_base64url_nopad};
-
 const CHALLENGE_LEN: usize = 32;
 const U2F_VERSION: &str = "U2F_V2";
 
@@ -318,10 +317,19 @@ fn decode(data: &str) -> Result<Vec<u8>, Error> {
 /// produce a challenge, which is just a bunch of random data
 fn challenge() -> Result<String, Error> {
     let mut data = MaybeUninit::<[u8; CHALLENGE_LEN]>::uninit();
-    Ok(encode(&unsafe {
-        crate::sys::linux::fill_with_random_data(&mut *data.as_mut_ptr())?;
+    let data = unsafe {
+        let buf: &mut [u8; CHALLENGE_LEN] = &mut *data.as_mut_ptr();
+        let rc = libc::getrandom(buf.as_mut_ptr() as *mut libc::c_void, buf.len(), 0);
+        if rc == -1 {
+            return Err(io::Error::last_os_error().into());
+        }
+        if rc as usize != buf.len() {
+            // `CHALLENGE_LEN` is small, so short reads cannot happen (see `getrandom(2)`)
+            bail!("short getrandom call");
+        }
         data.assume_init()
-    }))
+    };
+    Ok(encode(&data))
 }
 
 /// Used while parsing the binary registration response. The slices point directly into the
@@ -548,3 +556,37 @@ mod test {
         );
     }
 }
+
+pub mod bytes_as_base64 {
+    use serde::{Deserialize, Deserializer, Serializer};
+
+    pub fn serialize<S: Serializer>(data: &[u8], serializer: S) -> Result<S::Ok, S::Error> {
+        serializer.serialize_str(&base64::encode(&data))
+    }
+
+    pub fn deserialize<'de, D: Deserializer<'de>>(deserializer: D) -> Result<Vec<u8>, D::Error> {
+        use serde::de::Error;
+        String::deserialize(deserializer).and_then(|string| {
+            base64::decode(&string).map_err(|err| Error::custom(err.to_string()))
+        })
+    }
+}
+
+pub mod bytes_as_base64url_nopad {
+    use serde::{Deserialize, Deserializer, Serializer};
+
+    pub fn serialize<S: Serializer>(data: &[u8], serializer: S) -> Result<S::Ok, S::Error> {
+        serializer.serialize_str(&base64::encode_config(
+            data.as_ref(),
+            base64::URL_SAFE_NO_PAD,
+        ))
+    }
+
+    pub fn deserialize<'de, D: Deserializer<'de>>(deserializer: D) -> Result<Vec<u8>, D::Error> {
+        use serde::de::Error;
+        String::deserialize(deserializer).and_then(|string| {
+            base64::decode_config(&string, base64::URL_SAFE_NO_PAD)
+                .map_err(|err| Error::custom(err.to_string()))
+        })
+    }
+}

proxmox/Cargo.toml

@@ -20,7 +20,6 @@ nix = "0.19.1"
 unicode-width ="0.1.8"
 
 # tools module:
-base32 = { version = "0.4", optional = true }
 base64 = "0.12"
 endian_trait = { version = "0.6", features = ["arrays"] }
 regex = "1.2"
@@ -38,7 +37,6 @@ futures = { version = "0.3", optional = true }
 http = "0.2"
 hyper = { version = "0.14", features = [ "full" ], optional = true }
 percent-encoding = "2.1"
-openssl =  { version = "0.10", optional = true }
 rustyline = "7"
 textwrap = "0.11"
 tokio = { version = "1.0", features = [], optional = true }
@@ -51,7 +49,7 @@ proxmox-api-macro = { path = "../proxmox-api-macro", optional = true, version =
 proxmox-sortable-macro = { path = "../proxmox-sortable-macro", optional = true, version = "0.1.1" }
 
 [features]
-default = [ "cli", "router", "tfa", "u2f" ]
+default = [ "cli", "router" ]
 sortable-macro = ["proxmox-sortable-macro"]
 
 # api:
@@ -59,10 +57,8 @@ api-macro = ["proxmox-api-macro"]
 test-harness = []
 cli = [ "router", "hyper", "tokio" ]
 router = [ "futures", "hyper", "tokio" ]
-tfa = [ "openssl" ]
-u2f = [ "base32" ]
 
-examples = ["tokio/macros", "u2f"]
+examples = ["tokio/macros"]
 
 # tools:
 #valgrind = ["proxmox-tools/valgrind"]

proxmox/src/tools/mod.rs

@@ -22,9 +22,6 @@ pub mod uuid;
 pub mod vec;
 pub mod systemd;
 
-#[cfg(feature = "tfa")]
-pub mod tfa;
-
 #[doc(inline)]
 pub use uuid::Uuid;