payload_dumper 0.7.7

A fast and efficient Android OTA payload dumper written in Rust
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use std::env;
use std::process::Command;

fn main() {
    let build_time = chrono::Utc::now()
        .format("%Y-%m-%d %H:%M:%S UTC")
        .to_string();
    println!("cargo:rustc-env=BUILD_TIMESTAMP={}", build_time);

    // fallback to "unknown" if not available
    let git_hash = Command::new("git")
        .args(["rev-parse", "HEAD"])
        .output()
        .ok()
        .and_then(|output| {
            if output.status.success() {
                Some(String::from_utf8_lossy(&output.stdout).trim().to_string())
            } else {
                None
            }
        })
        .unwrap_or_else(|| "unknown".to_string());
    println!("cargo:rustc-env=GIT_COMMIT={}", git_hash);

    let git_hash_short = if git_hash != "unknown" && git_hash.len() >= 8 {
        git_hash[..8].to_string()
    } else {
        git_hash.clone()
    };
    println!("cargo:rustc-env=GIT_COMMIT_SHORT={}", git_hash_short);

    let git_branch = Command::new("git")
        .args(["rev-parse", "--abbrev-ref", "HEAD"])
        .output()
        .ok()
        .and_then(|output| {
            if output.status.success() {
                Some(String::from_utf8_lossy(&output.stdout).trim().to_string())
            } else {
                None
            }
        })
        .unwrap_or_else(|| "unknown".to_string());
    println!("cargo:rustc-env=GIT_BRANCH={}", git_branch);

    let mut features = Vec::new();

    if env::var("CARGO_FEATURE_REMOTE_ZIP").is_ok() {
        features.push("remote_zip");
    }
    if env::var("CARGO_FEATURE_LOCAL_ZIP").is_ok() {
        features.push("local_zip");
    }
    if env::var("CARGO_FEATURE_METADATA").is_ok() {
        features.push("metadata");
    }
    if env::var("CARGO_FEATURE_HICKORY_DNS").is_ok() {
        features.push("hickory_dns");
    }
    if env::var("CARGO_FEATURE_PREFETCH").is_ok() {
        features.push("prefetch");
    }
    let features_str = if features.is_empty() {
        "none".to_string()
    } else {
        features.join(",")
    };
    println!("cargo:rustc-env=BUILD_FEATURES={}", features_str);

    println!(
        "cargo:rustc-env=BUILD_TARGET={}",
        env::var("TARGET").unwrap()
    );

    let target_arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap_or_else(|_| "unknown".to_string());
    println!("cargo:rustc-env=TARGET_ARCH={}", target_arch);

    let target_os = env::var("CARGO_CFG_TARGET_OS").unwrap_or_else(|_| "unknown".to_string());
    println!("cargo:rustc-env=TARGET_OS={}", target_os);

    println!(
        "cargo:rustc-env=BUILD_PROFILE={}",
        env::var("PROFILE").unwrap()
    );

    let opt_level = env::var("OPT_LEVEL").unwrap_or_else(|_| "unknown".to_string());
    println!("cargo:rustc-env=OPT_LEVEL={}", opt_level);

    let rustc_version = Command::new("rustc")
        .args(["--version"])
        .output()
        .ok()
        .and_then(|output| {
            if output.status.success() {
                Some(String::from_utf8_lossy(&output.stdout).trim().to_string())
            } else {
                None
            }
        })
        .unwrap_or_else(|| "unknown".to_string());
    println!("cargo:rustc-env=RUSTC_VERSION={}", rustc_version);

    let build_host = env::var("HOST").unwrap_or_else(|_| "unknown".to_string());
    println!("cargo:rustc-env=BUILD_HOST={}", build_host);

    // set platform specific default user agent
    let default_user_agent = match target_os.as_str() {
        "windows" => {
            "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36"
        }
        "macos" => {
            "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36"
        }
        "linux" => {
            "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36"
        }
        "android" => {
            "Mozilla/5.0 (Linux; Android 14) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Mobile Safari/537.36"
        }
        "ios" => {
            "Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1"
        }
        _ => {
            "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36"
        } // fallback to Linux
    };
    println!("cargo:rustc-env=DEFAULT_USER_AGENT={}", default_user_agent);

    if std::path::Path::new(".git/HEAD").exists() {
        println!("cargo:rerun-if-changed=.git/HEAD");
    }
}