Add who utility

Cargo.lock

@@ -128,9 +128,9 @@ dependencies = [
 
 [[package]]
 name = "block-buffer"
-version = "0.10.3"
+version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "69cce20737498f97b993470a6e536b8523f0af7892a4f928cceb1ac5e52ebe7e"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
 dependencies = [
  "generic-array",
 ]
@@ -141,6 +141,12 @@ version = "3.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0d261e256854913907f67ed06efbc3338dfe6179796deefc1ff763fc1aee5535"
 
+[[package]]
+name = "byteorder"
+version = "1.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
+
 [[package]]
 name = "cc"
 version = "1.0.79"
@@ -164,9 +170,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chrono"
-version = "0.4.23"
+version = "0.4.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "16b0a3d9ed01224b22057780a37bb8c5dbfe1be8ba48678e7bf57ec4b385411f"
+checksum = "4e3c5919066adf22df73762e50cffcde3a758f2a848b113b586d1f86728b673b"
 dependencies = [
  "iana-time-zone",
  "num-integer",
@@ -202,9 +208,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.1.6"
+version = "4.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0b0588d44d4d63a87dbd75c136c166bbfd9a86a31cb89e09906521c7d3f5e3"
+checksum = "c3d7ae14b20b94cb02149ed21a86c423859cbe18dc7ed69845cace50e52b40a5"
 dependencies = [
  "bitflags",
  "clap_lex",
@@ -212,11 +218,11 @@ dependencies = [
 
 [[package]]
 name = "clap_complete"
-version = "4.1.3"
+version = "4.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0012995dc3a54314f4710f5631d74767e73c534b8757221708303e48eef7a19b"
+checksum = "501ff0a401473ea1d4c3b125ff95506b62c5bc5768d818634195fbb7c4ad5ff4"
 dependencies = [
- "clap 4.1.6",
+ "clap 4.1.8",
 ]
 
 [[package]]
@@ -225,7 +231,7 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c7fa41f5e6aa83bd151b70fd0ceaee703d68cd669522795dc812df9edad1252c"
 dependencies = [
- "clap 4.1.6",
+ "clap 4.1.8",
  "clap_complete",
 ]
 
@@ -244,7 +250,7 @@ version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bb0f09a0ca8f0dd8ac92c546b426f466ef19828185c6d504c80c48c9c2768ed9"
 dependencies = [
- "clap 4.1.6",
+ "clap 4.1.8",
  "roff",
 ]
 
@@ -260,9 +266,9 @@ dependencies = [
 
 [[package]]
 name = "constant_time_eq"
-version = "0.2.4"
+version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3ad85c1f65dc7b37604eb0e89748faf0b9653065f2a8ef69f96a687ec1e9279"
+checksum = "13418e745008f7349ec7e449155f419a61b92b58a99cc3616942b926825ec76b"
 
 [[package]]
 name = "core-foundation-sys"
@@ -291,9 +297,9 @@ dependencies = [
 
 [[package]]
 name = "cxx"
-version = "1.0.91"
+version = "1.0.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86d3488e7665a7a483b57e25bdd90d0aeb2bc7608c8d0346acf2ad3f1caf1d62"
+checksum = "9a140f260e6f3f79013b8bfc65e7ce630c9ab4388c6a89c71e07226f49487b72"
 dependencies = [
  "cc",
  "cxxbridge-flags",
@@ -303,9 +309,9 @@ dependencies = [
 
 [[package]]
 name = "cxx-build"
-version = "1.0.91"
+version = "1.0.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48fcaf066a053a41a81dfb14d57d99738b767febb8b735c3016e469fac5da690"
+checksum = "da6383f459341ea689374bf0a42979739dc421874f112ff26f829b8040b8e613"
 dependencies = [
  "cc",
  "codespan-reporting",
@@ -318,15 +324,15 @@ dependencies = [
 
 [[package]]
 name = "cxxbridge-flags"
-version = "1.0.91"
+version = "1.0.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2ef98b8b717a829ca5603af80e1f9e2e48013ab227b68ef37872ef84ee479bf"
+checksum = "90201c1a650e95ccff1c8c0bb5a343213bdd317c6e600a93075bca2eff54ec97"
 
 [[package]]
 name = "cxxbridge-macro"
-version = "1.0.91"
+version = "1.0.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "086c685979a698443656e5cf7856c95c642295a38599f12fb1ff76fb28d19892"
+checksum = "0b75aed41bb2e6367cae39e6326ef817a851db13c13e4f3263714ca3cfb8de56"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -465,9 +471,9 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
 [[package]]
 name = "libc"
-version = "0.2.139"
+version = "0.2.140"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "201de327520df007757c1f0adce6e827fe8562fbc28bfd9c15571c66ca1f5f79"
+checksum = "99227334921fae1a979cf0bfdfcc6b3e5ce376ef57e16fb6fb3ea2ed6095f80c"
 
 [[package]]
 name = "libloading"
@@ -576,9 +582,9 @@ checksum = "6ac9a59f73473f1b8d852421e59e64809f025994837ef743615c6d0c5b305160"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.51"
+version = "1.0.52"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d727cae5b39d21da60fa540906919ad737832fe0b1c165da3a34d6548c849d6"
+checksum = "1d0e1ae9e836cc3beddd63db0df682593d7e2d3d891ae8c9083d2113e1744224"
 dependencies = [
  "unicode-ident",
 ]
@@ -592,9 +598,9 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.23"
+version = "1.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8856d8364d252a14d474036ea1358d63c9e6965c8e5c1885c18f73d70bff9c7b"
+checksum = "4424af4bf778aae2051a77b60283332f386554255d722233d09fbfc7e30da2fc"
 dependencies = [
  "proc-macro2",
 ]
@@ -639,9 +645,9 @@ checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
 [[package]]
 name = "rustversion"
-version = "1.0.11"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5583e89e108996506031660fe09baa5011b9dd0341b89029313006d1fb508d70"
+checksum = "4f3208ce4d8448b3f3e7d168a73f5e0c43a61e32930de3bceeccedb388b6bf06"
 
 [[package]]
 name = "same-file"
@@ -660,9 +666,15 @@ checksum = "010e18bd3bfd1d45a7e666b236c78720df0d9a7698ebaa9c1c559961eb60a38b"
 
 [[package]]
 name = "scratch"
-version = "1.0.3"
+version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ddccb15bcce173023b3fedd9436f882a0739b8dfb45e4f6b6002bee5929f61b2"
+checksum = "1792db035ce95be60c3f8853017b3999209281c24e2ba5bc8e59bf97a0c590c1"
+
+[[package]]
+name = "serde"
+version = "1.0.156"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "314b5b092c0ade17c00142951e50ced110ec27cea304b1037c6969246c2469a4"
 
 [[package]]
 name = "sha1"
@@ -694,7 +706,7 @@ dependencies = [
  "bitflags-mini",
  "blake2b_simd",
  "chrono",
- "clap 4.1.6",
+ "clap 4.1.8",
  "clap_complete",
  "clap_complete_nushell",
  "clap_mangen",
@@ -716,6 +728,7 @@ dependencies = [
  "unistd",
  "unix-mode",
  "unix-stat",
+ "utmp-rs",
  "walkdir",
 ]
 
@@ -764,9 +777,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.108"
+version = "1.0.109"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d56e159d99e6c2b93995d171050271edb50ecc5288fbc7cc17de8fdce4e58c14"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -802,24 +815,40 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.38"
+version = "1.0.39"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a9cd18aa97d5c45c6603caea1da6628790b37f7a34b6ca89522331c5180fed0"
+checksum = "a5ab016db510546d856297882807df8da66a16fb8c4101cb8b30054b0d5b2d9c"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.38"
+version = "1.0.39"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fb327af4685e4d03fa8cbcf1716380da910eeb2bb8be417e7f9fd3fb164f36f"
+checksum = "5420d42e90af0c38c3290abcca25b9b3bdf379fc9f55c528f53a269d9c9a267e"
 dependencies = [
  "proc-macro2",
  "quote",
  "syn",
 ]
 
+[[package]]
+name = "time"
+version = "0.3.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd0cbfecb4d19b5ea75bb31ad904eb5b9fa13f21079c3b92017ebdf4999a5890"
+dependencies = [
+ "serde",
+ "time-core",
+]
+
+[[package]]
+name = "time-core"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e153e1f1acaef8acc537e68b44906d2db6436e2b35ac2c6b42640fff91f00fd"
+
 [[package]]
 name = "typenum"
 version = "1.16.0"
@@ -828,9 +857,9 @@ checksum = "497961ef93d974e23eb6f433eb5fe1b7930b659f06d12dec6fc44a8f554c0bba"
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.6"
+version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "84a22b9f218b40614adcb3f4ff08b703773ad44fa9423e4e0d346d5db86e4ebc"
+checksum = "e5464a87b239f13a63a501f2701565754bae92d243d4bb7eb12f6d57d2269bf4"
 
 [[package]]
 name = "unicode-segmentation"
@@ -870,6 +899,30 @@ dependencies = [
  "sc",
 ]
 
+[[package]]
+name = "utmp-raw"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9259b18bad8808ca2b0e585d8c06a6ac7b0bb11b7bf50632d05832c25e6f91f"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "zerocopy",
+]
+
+[[package]]
+name = "utmp-rs"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a9c97e4baf720e8a40615bd084c7e18f489d8099045f4e45f8e96d6c88c9c20"
+dependencies = [
+ "libc",
+ "thiserror",
+ "time",
+ "utmp-raw",
+ "zerocopy",
+]
+
 [[package]]
 name = "vec_map"
 version = "0.8.2"
@@ -998,9 +1051,9 @@ dependencies = [
 
 [[package]]
 name = "windows-targets"
-version = "0.42.1"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e2522491fbfcd58cc84d47aeb2958948c4b8982e9a2d8a2a35bbaed431390e7"
+checksum = "8e5180c00cd44c9b1c88adb3693291f1cd93605ded80c250a75d472756b4d071"
 dependencies = [
  "windows_aarch64_gnullvm",
  "windows_aarch64_msvc",
@@ -1013,42 +1066,63 @@ dependencies = [
 
 [[package]]
 name = "windows_aarch64_gnullvm"
-version = "0.42.1"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c9864e83243fdec7fc9c5444389dcbbfd258f745e7853198f365e3c4968a608"
+checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
 
 [[package]]
 name = "windows_aarch64_msvc"
-version = "0.42.1"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c8b1b673ffc16c47a9ff48570a9d85e25d265735c503681332589af6253c6c7"
+checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
 
 [[package]]
 name = "windows_i686_gnu"
-version = "0.42.1"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de3887528ad530ba7bdbb1faa8275ec7a1155a45ffa57c37993960277145d640"
+checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
 
 [[package]]
 name = "windows_i686_msvc"
-version = "0.42.1"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf4d1122317eddd6ff351aa852118a2418ad4214e6613a50e0191f7004372605"
+checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
 
 [[package]]
 name = "windows_x86_64_gnu"
-version = "0.42.1"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1040f221285e17ebccbc2591ffdc2d44ee1f9186324dd3e84e99ac68d699c45"
+checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
-version = "0.42.1"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "628bfdf232daa22b0d64fdb62b09fcc36bb01f05a3939e20ab73aaf9470d0463"
+checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
 
 [[package]]
 name = "windows_x86_64_msvc"
-version = "0.42.1"
+version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "447660ad36a13288b1db4d4248e857b510e8c3a225c822ba4fb748c0aafecffd"
+checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
+
+[[package]]
+name = "zerocopy"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "332f188cc1bcf1fe1064b8c58d150f497e697f49774aa846f2dc949d9a25f236"
+dependencies = [
+ "byteorder",
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6505e6815af7de1746a08f69c69606bb45695a17149517680f3b2149713b19a3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]

Cargo.toml

@@ -39,7 +39,7 @@ sha1 = "0.10"
 sha2 = "0.10"
 size-display = "0.1"
 termcolor = "1.1"
-textwrap = { version = "0.16", default-features = false, features = ["smawk"] }
+utmp-rs = "0.3"
 walkdir = "2.3"
 
 [dependencies.bitflags]
@@ -71,6 +71,11 @@ path = "mount"
 package = "unix-stat"
 path = "unix-stat"
 
+[dependencies.textwrap]
+version = "0.16"
+default-features = false
+features = ["smawk"]
+
 [dependencies.unistd]
 package = "unistd"
 path = "unistd"

README.md

@@ -69,6 +69,7 @@ code between applets, making for an overall smaller binary.
 - unlink
 - wc
 - which
+- who
 - whoami
 - yes
 

corebox/commands/mod.rs

@@ -50,6 +50,7 @@ mod r#true;
 mod unlink;
 mod wc;
 mod which;
+mod who;
 mod whoami;
 mod yes;
 
@@ -100,13 +101,14 @@ pub fn get(name: &str) -> Option<Box<dyn Cmd>> {
         "unlink" => Some(Box::new(unlink::Unlink::default())),
         "wc" => Some(Box::new(wc::Wc::default())),
         "which" => Some(Box::new(which::Which::default())),
+        "who" => Some(Box::new(who::Who::default())),
         "whoami" => Some(Box::new(whoami::Whoami::default())),
         "yes" => Some(Box::new(yes::Yes::default())),
         _ => None,
     }
 }
 
-pub static COMMANDS: [&str; 44] = [
+pub static COMMANDS: [&str; 45] = [
     "base32",
     "base64",
     "basename",
@@ -149,6 +151,7 @@ pub static COMMANDS: [&str; 44] = [
     "unlink",
     "wc",
     "which",
+    "who",
     "whoami",
     "yes",
 ];

corebox/commands/who/mod.rs

@@ -0,0 +1,49 @@
+use clap::{Arg, ArgAction, Command};
+use shitbox::Cmd;
+use utmp_rs::UtmpEntry;
+
+#[derive(Debug, Default)]
+pub struct Who;
+
+impl Cmd for Who {
+    fn cli(&self) -> Command {
+        Command::new("who")
+            .about("show who is logged on")
+            .author("Nathan Fisher")
+            .version(env!("CARGO_PKG_VERSION"))
+            .arg(
+                Arg::new("heading")
+                    .help("print line of column headings")
+                    .short('H')
+                    .long("heading")
+                    .action(ArgAction::SetTrue),
+            )
+    }
+
+    fn run(&self, matches: &clap::ArgMatches) -> Result<(), Box<dyn std::error::Error>> {
+        if matches.get_flag("heading") {
+            println!("NAME     LINE         TIME");
+        }
+        let entries = utmp_rs::parse_from_path("/var/run/utmp")?;
+        for e in entries.iter() {
+            match e {
+                UtmpEntry::UserProcess {
+                    pid: _,
+                    line,
+                    user,
+                    host: _,
+                    session: _,
+                    time,
+                } => {
+                    println!("{user:9}{line:13}{} {}:{}", time.date(), time.hour(), time.minute());
+                }
+                _ => {}
+            }
+        }
+        Ok(())
+    }
+
+    fn path(&self) -> Option<shitbox::Path> {
+        Some(shitbox::Path::UsrBin)
+    }
+}