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72 lines
2.1 KiB
72 lines
2.1 KiB
use std::env;
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use std::fs::File;
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use std::io::prelude::*;
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use std::io::BufReader;
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use std::path::PathBuf;
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macro_rules! set_rustc_env_var {
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($name: expr, $value: expr) => {{
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println!("cargo:rustc-env={}={}", $name, $value);
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}};
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}
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fn get_openssl_version_unit(n: u64, pos: u32) -> u64 {
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let p = 0x000f_f000_0000 >> (8 * pos);
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let n = n & p;
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n >> (8 * (3 - pos) + 4)
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}
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fn get_openssl_version(v: &str) -> String {
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let v = u64::from_str_radix(&v, 16).unwrap();
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let mut version = vec![];
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for i in 0..3 {
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let n = get_openssl_version_unit(v, i);
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version.push(format!("{}", n));
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}
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let version = version.join(".");
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let p = get_openssl_version_unit(v, 3);
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if p != 0 {
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let p = p + 0x60;
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let p = std::char::from_u32(p as u32).unwrap();
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format!("{}{}", version, p)
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} else {
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version
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}
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}
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fn get_lib_version(lib: &str) -> Option<String> {
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let pat = format!("\"checksum {} ", lib);
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let mut lock_file = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
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lock_file.push("../Cargo.lock");
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let file = File::open(lock_file).unwrap();
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for line in BufReader::new(file).lines() {
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let line = line.unwrap();
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if line.starts_with(&pat) {
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let v: Vec<&str> = line.split(' ').collect();
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return Some(String::from(v[2]));
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}
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}
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None
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}
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fn set_tls() {
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if let Ok(v) = env::var("DEP_OPENSSL_VERSION_NUMBER") {
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let version = get_openssl_version(&v);
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set_rustc_env_var!("ACMED_TLS_LIB_VERSION", version);
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set_rustc_env_var!("ACMED_TLS_LIB_NAME", "OpenSSL");
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}
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if let Ok(v) = env::var("DEP_OPENSSL_LIBRESSL_VERSION_NUMBER") {
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let version = get_openssl_version(&v);
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set_rustc_env_var!("ACMED_TLS_LIB_VERSION", version);
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set_rustc_env_var!("ACMED_TLS_LIB_NAME", "LibreSSL");
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}
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if env::var("CARGO_FEATURE_STANDALONE").is_ok() {
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let version = get_lib_version("ring").unwrap();
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set_rustc_env_var!("ACMED_TLS_LIB_VERSION", version);
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set_rustc_env_var!("ACMED_TLS_LIB_NAME", "ring");
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}
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}
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fn main() {
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set_tls();
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}
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