Prepare the build tools for the standalone feature

acme_common/Cargo.toml

@@ -11,6 +11,10 @@ include = ["src/**/*", "Cargo.toml", "Licence_*.txt"]
 [lib]
 name = "acme_common"
 
+[features]
+default = ["openssl"]
+standalone = []
+
 [dependencies]
 base64 = "0.10"
 daemonize = "0.4"
@@ -18,8 +22,7 @@ env_logger = "0.6"
 handlebars = "2.0.0-beta.2"
 http_req = "0.5"
 log = "0.4"
-openssl = "0.10"
-serde = { version = "1.0", features = ["derive"] }
+openssl = { version = "0.10", optional = true }
 serde_json = "1.0"
 syslog = "4.0"
 time = "0.1"

acmed/Cargo.toml

@@ -11,6 +11,10 @@ license = "MIT OR Apache-2.0"
 include = ["src/**/*", "Cargo.toml", "LICENSE-*.txt"]
 build = "build.rs"
 
+[features]
+default = ["openssl-sys"]
+standalone = []
+
 [dependencies]
 acme_common = { path = "../acme_common" }
 clap = "2.32"
@@ -18,8 +22,7 @@ handlebars = "2.0.0-beta.2"
 http_req = "0.5"
 log = "0.4"
 nom = "5.0.0-beta2"
-openssl = "0.10"
-openssl-sys = "0.9"
+openssl-sys = { version = "0.9", optional = true }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 time = "0.1"

acmed/build.rs

@@ -5,6 +5,7 @@ use serde::Deserialize;
 use std::env;
 use std::fs::File;
 use std::io::prelude::*;
+use std::io::BufReader;
 use std::path::PathBuf;
 
 macro_rules! set_rustc_env_var {
@@ -91,6 +92,21 @@ fn get_openssl_version(v: &str) -> String {
     }
 }
 
+fn get_lib_version(lib: &str) -> Option<String> {
+    let pat = format!("\"checksum {} ", lib);
+    let mut lock_file = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
+    lock_file.push("../Cargo.lock");
+    let file = File::open(lock_file).unwrap();
+    for line in BufReader::new(file).lines() {
+        let line = line.unwrap();
+        if line.starts_with(&pat) {
+            let v: Vec<&str> = line.split(' ').collect();
+            return Some(String::from(v[2]));
+        }
+    }
+    None
+}
+
 fn set_tls() {
     if let Ok(v) = env::var("DEP_OPENSSL_VERSION_NUMBER") {
         let version = get_openssl_version(&v);
@@ -102,6 +118,11 @@ fn set_tls() {
         set_rustc_env_var!("ACMED_TLS_LIB_VERSION", version);
         set_rustc_env_var!("ACMED_TLS_LIB_NAME", "LibreSSL");
     }
+    if let Ok(_) = env::var("CARGO_FEATURE_STANDALONE") {
+        let version = get_lib_version("ring").unwrap();
+        set_rustc_env_var!("ACMED_TLS_LIB_VERSION", version);
+        set_rustc_env_var!("ACMED_TLS_LIB_NAME", "ring");
+    }
 }
 
 fn set_target() {

tacd/Cargo.toml

@@ -10,10 +10,12 @@ readme = "../README.md"
 license = "MIT OR Apache-2.0"
 include = ["src/**/*", "Cargo.toml", "LICENSE-*.txt"]
 
+[features]
+default = ["openssl"]
+standalone = []
+
 [dependencies]
 acme_common = { path = "../acme_common" }
 clap = "2.32"
-env_logger = "0.6"
 log = "0.4"
-openssl = "0.10"
-syslog = "4.0"
+openssl = { version = "0.10", optional = true }