[client] Set up environment, spawn subprocess
- Coffer client sets up the environment from the keys and secrets read - Coffer client spawns a subprocess and reaps itself Signed-off-by: Armin Friedl <dev@friedl.net>
This commit is contained in:
parent
3344ca4877
commit
b3b86b4238
GPG key ID:
48C726EEE7FBCBC8
7 changed files with 112 additions and 32 deletions
44
Cargo.lock
generated
44
Cargo.lock
generated
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@ -66,9 +66,10 @@ dependencies = [
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[[package]]
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name = "coffer-client"
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version = "0.1.0"
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version = "0.2.0"
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dependencies = [
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"env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
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"exec 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
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"log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
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"serde 1.0.102 (registry+https://github.com/rust-lang/crates.io-index)",
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"serde_cbor 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -78,7 +79,7 @@ dependencies = [
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[[package]]
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name = "coffer-companion"
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version = "0.1.0"
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version = "0.2.0"
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dependencies = [
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"log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
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"serde 1.0.102 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -89,7 +90,7 @@ dependencies = [
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[[package]]
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name = "coffer-server"
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version = "0.1.0"
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version = "0.2.0"
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dependencies = [
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"env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
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"futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -126,6 +127,34 @@ dependencies = [
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"termcolor 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "errno"
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version = "0.2.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"errno-dragonfly 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
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"libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
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"winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "errno-dragonfly"
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version = "0.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"gcc 0.3.55 (registry+https://github.com/rust-lang/crates.io-index)",
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"libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "exec"
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version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"errno 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
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"libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "filetime"
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version = "0.2.8"
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@ -220,6 +249,11 @@ dependencies = [
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"slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "gcc"
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version = "0.3.55"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "half"
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version = "1.4.0"
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@ -612,6 +646,9 @@ dependencies = [
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"checksum crc32fast 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ba125de2af0df55319f41944744ad91c71113bf74a4646efff39afe1f6842db1"
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"checksum dtoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "ea57b42383d091c85abcc2706240b94ab2a8fa1fc81c10ff23c4de06e2a90b5e"
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"checksum env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "44533bbbb3bb3c1fa17d9f2e4e38bbbaf8396ba82193c4cb1b6445d711445d36"
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"checksum errno 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "c2a071601ed01b988f896ab14b95e67335d1eeb50190932a1320f7fe3cadc84e"
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"checksum errno-dragonfly 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "14ca354e36190500e1e1fb267c647932382b54053c50b14970856c0b00a35067"
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"checksum exec 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "886b70328cba8871bfc025858e1de4be16b1d5088f2ba50b57816f4210672615"
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"checksum filetime 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "1ff6d4dab0aa0c8e6346d46052e93b13a16cf847b54ed357087c35011048cc7d"
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"checksum futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b6f16056ecbb57525ff698bb955162d0cd03bee84e6241c27ff75c08d8ca5987"
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"checksum futures-channel 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fcae98ca17d102fd8a3603727b9259fcf7fa4239b603d2142926189bc8999b86"
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@ -622,6 +659,7 @@ dependencies = [
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"checksum futures-sink 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "171be33efae63c2d59e6dbba34186fe0d6394fb378069a76dfd80fdcffd43c16"
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"checksum futures-task 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0bae52d6b29cf440e298856fec3965ee6fa71b06aa7495178615953fd669e5f9"
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"checksum futures-util 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c0d66274fb76985d3c62c886d1da7ac4c0903a8c9f754e8fe0f35a6a6cc39e76"
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"checksum gcc 0.3.55 (registry+https://github.com/rust-lang/crates.io-index)" = "8f5f3913fa0bfe7ee1fd8248b6b9f42a5af4b9d65ec2dd2c3c26132b950ecfc2"
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"checksum half 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9ff54597ea139063f4225f1ec47011b03c9de4a486957ff3fc506881dac951d0"
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"checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
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"checksum hermit-abi 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "307c3c9f937f38e3534b1d6447ecf090cafcc9744e4a6360e8b037b2cf5af120"
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@ -1,5 +1,4 @@
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[workspace]
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members = [
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"coffer-server",
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"coffer-client",
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15
TODO.org
Normal file
15
TODO.org
Normal file
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@ -0,0 +1,15 @@
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* General
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** TODO Add a license
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** TODO Better communication protocol
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* Coffer Server
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* Coffer Client
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** DONE Set environment variables
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CLOSED: [2019-11-27 Wed 22:51]
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** TODO Send key requests encrypted/signed
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* Coffer Companion
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** TODO Add Subcommands
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- [ ] Generate master key
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- [ ] Generate client key
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- [ ] Encrypt/Decrypt secrets with master key
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- [ ] Encrypt/Decrypt key request with client key
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- [ ] Generate trampolin sh from dockerfile
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@ -1,6 +1,6 @@
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[package]
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name = "coffer-client"
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version = "0.1.0"
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version = "0.2.0"
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authors = ["Armin Friedl <dev@friedl.net>"]
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edition = "2018"
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@ -15,3 +15,5 @@ structopt = "0.3"
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serde = { version = "1.0", features = ["derive"]}
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serde_yaml = "0.8"
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serde_cbor = "0.10.2"
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# Executing subcommand
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exec = "0.3.1"
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@ -7,7 +7,6 @@ use std::fs::File;
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use std::error::Error;
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use std::net::TcpStream;
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use std::net::SocketAddr;
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use std::io::Read;
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use std::net::IpAddr;
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use std::path::PathBuf;
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use std::io::BufRead;
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@ -16,51 +15,78 @@ use std::io::Write;
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#[derive(StructOpt, Debug)]
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struct Args {
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/// Path to the keys file
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#[structopt(short, long, parse(from_os_str), env = "SECSRV_SECRETS", hide_env_values = true)]
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secrets: PathBuf,
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/// The port secsrv is listening on
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#[structopt(short, long, env = "SECSRV_PORT", default_value = "9187")]
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port: u16,
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/// The address secsrv binds to
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#[structopt(short, long, env = "SECSRV_IP", default_value = "127.0.0.1")]
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ip: IpAddr
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ip: IpAddr,
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/// Path to the keys file
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#[structopt(parse(from_os_str), env = "SECSRV_SECRETS", hide_env_values = true)]
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secrets: PathBuf,
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/// The subcommand spawned by coffer-client
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cmd: String,
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/// Arguments to the subcommand spawned by coffer-client
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cmd_args: Vec<String>
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}
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type Secrets = Vec<String>;
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fn main() -> Result<(), Box<dyn Error>>{
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fn main() -> Result<(), Box<dyn Error>> {
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env_logger::init();
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let args = Args::from_args();
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info!{"Parsing sec requests"}
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info!{"Connecting to coffer server"}
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let addr = SocketAddr::from((args.ip, args.port));
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let stream: TcpStream = TcpStream::connect(addr)?;
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let secrets = parse_from_path(&args.secrets)?;
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info!{"Connecting"}
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let mut channel: TcpStream = TcpStream::connect(SocketAddr::from((args.ip, args.port)))?;
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info!{"Parsing key requests"}
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let keys = parse_from_path(&args.secrets)?;
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info!{"Reading secrets"}
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retrieve_secrets(&keys, stream)?;
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for s in secrets {
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let buf = serde_cbor::to_vec(&s)?;
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channel.write_all(&buf.len().to_be_bytes())?;
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channel.write_all(&buf)?;
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info!{"Wrote secret {} as {:?}", s, buf}
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info!{"Spawning coffer'ed command, reaping coffer"}
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reap_coffer(&args.cmd, &args.cmd_args);
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Err("Could not spawn sub-command".into())
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}
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fn retrieve_secrets(keys: &Vec<String>, mut stream: TcpStream) -> Result<(), Box<dyn Error>>{
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for k in keys {
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let buf = serde_cbor::to_vec(&k)?;
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info!{"Sending key request {} as {:?}", k, buf}
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stream.write_all(&buf.len().to_be_bytes())?;
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stream.write_all(&buf)?;
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info!{"Reading response"}
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let mut reader = BufReader::new(&stream); // get buffered reader for line-wise reading from stream
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// read line
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let mut resp = String::new();
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let mut reader = BufReader::new(&channel);
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reader.read_line(&mut resp);
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println!{"Resp: {:?}", resp};
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reader.read_line(&mut resp)?;
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info!{"Retrieved secret. Setting environment"}
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std::env::set_var(k.trim(), resp.trim());
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}
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Ok(())
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}
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pub fn parse_from_path(path: &PathBuf) -> Result<Secrets, Box<dyn Error>> {
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fn reap_coffer(cmd: &str, args: &Vec<String>) {
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let mut cmd = exec::Command::new(cmd);
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// TODO Push cmd as first arg if not already set?
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cmd.args(args);
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let err = cmd.exec();
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error!{"Could not execute sub-command {}", err};
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}
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fn parse_from_path(path: &PathBuf) -> Result<Vec<String>, Box<dyn Error>> {
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let sec_file = File::open(path)?;
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Ok(serde_yaml::from_reader::<_,Secrets>(sec_file)?)
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Ok(serde_yaml::from_reader::<_, Vec<String>>(sec_file)?)
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}
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@ -1,6 +1,6 @@
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[package]
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name = "coffer-companion"
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version = "0.1.0"
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version = "0.2.0"
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authors = ["Armin Friedl <dev@friedl.net>"]
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edition = "2018"
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@ -1,6 +1,6 @@
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[package]
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name = "coffer-server"
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version = "0.1.0"
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version = "0.2.0"
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authors = ["Armin Friedl <dev@friedl.net>"]
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edition = "2018"
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