Detect universal binaries and +x them

src/Rust/Cargo.lock

@@ -122,12 +122,6 @@ version = "0.21.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
 
-[[package]]
-name = "bindet"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5afee99ef5f7527f3944f2bf4f5d443749fa47d43eb1d4f83a36e839be7900a3"
-
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -1575,7 +1569,6 @@ name = "velopack"
 version = "0.0.0-local"
 dependencies = [
  "anyhow",
- "bindet",
  "chrono",
  "clap",
  "derivative",

src/Rust/Cargo.toml

@@ -82,7 +82,6 @@ time = "0.3"
 [target.'cfg(unix)'.dependencies]
 native-dialog = "0.7"
 waitpid-any = "0.2"
-bindet = "0.3"
 dialog = "0.3"
 libc = "0.2"
 

src/Rust/src/shared/bundle.rs

@@ -305,21 +305,11 @@ impl BundleInfo<'_> {
             // on macos, we need to chmod +x the executable files
             #[cfg(target_os = "macos")]
             {
-                if let Ok(file) = std::fs::OpenOptions::new().read(true).open(&file_path_on_disk) {
-                    let buf = std::io::BufReader::new(file);
-                    if let Ok(det) = bindet::detect(buf).map_err(|e| e.kind()) {
-                        if let Some(matches) = det {
-                            for m in matches.likely_to_be {
-                                if m == bindet::FileType::Mach {
-                                    if let Err(e) = std::fs::set_permissions(&file_path_on_disk, std::fs::Permissions::from_mode(0o755)) {
-                                        warn!("Failed to set executable permissions on '{}': {}", file_path_on_disk.to_string_lossy(), e);
-                                    } else {
-                                        info!("    {} Set executable permissions on '{}'", i, file_path_on_disk.to_string_lossy());
-                                    }
-                                    break;
-                                }
-                            }
-                        }
+                if let Ok(true) = super::macho::is_macho_image(&file_path_on_disk) {
+                    if let Err(e) = std::fs::set_permissions(&file_path_on_disk, std::fs::Permissions::from_mode(0o755)) {
+                        warn!("Failed to set executable permissions on '{}': {}", file_path_on_disk.to_string_lossy(), e);
+                    } else {
+                        info!("    {} Set executable permissions on '{}'", i, file_path_on_disk.to_string_lossy());
                     }
                 }
             }

src/Rust/src/shared/macho.rs

@@ -0,0 +1,44 @@
+use std::fs::File;
+use std::io::{self, Read};
+use std::path::Path;
+
+#[derive(Debug)]
+#[allow(non_camel_case_types)]
+enum MagicMachO {
+    MH_MAGIC = 0xfeedface,
+    MH_CIGAM = 0xcefaedfe,
+    MH_MAGIC_64 = 0xfeedfacf,
+    MH_CIGAM_64 = 0xcffaedfe,
+    // https://developer.apple.com/documentation/kernel/fat_header/1558632-magic/
+    // https://opensource.apple.com/source/file/file-80.40.2/file/magic/Magdir/cafebabe.auto.html
+    FAT_MAGIC = 0xcafebabe,
+    FAT_CIGAM = 0xbebafeca,
+}
+
+impl MagicMachO {
+    fn from_u32(value: u32) -> Option<Self> {
+        match value {
+            0xfeedface => Some(MagicMachO::MH_MAGIC),
+            0xcefaedfe => Some(MagicMachO::MH_CIGAM),
+            0xfeedfacf => Some(MagicMachO::MH_MAGIC_64),
+            0xcffaedfe => Some(MagicMachO::MH_CIGAM_64),
+            0xcafebabe => Some(MagicMachO::FAT_MAGIC),
+            0xbebafeca => Some(MagicMachO::FAT_CIGAM),
+            _ => None,
+        }
+    }
+}
+
+pub fn is_macho_image<P: AsRef<Path>>(file_path: P) -> io::Result<bool> {
+    let file_path = file_path.as_ref();
+    let mut file = File::open(file_path)?;
+    let mut buffer = [0; 4];
+
+    if file.metadata()?.len() < 256 {
+        return Ok(false);
+    }
+
+    file.read_exact(&mut buffer)?;
+    let magic = u32::from_be_bytes(buffer);
+    Ok(MagicMachO::from_u32(magic).is_some())
+}

src/Rust/src/shared/mod.rs

@@ -1,5 +1,6 @@
 pub mod bundle;
 pub mod download;
+pub mod macho;
 
 mod dialogs_const;
 mod dialogs_common;

src/Velopack.Packaging.Unix/MachO.cs

@@ -7,7 +7,11 @@ public class MachO
         MH_MAGIC = 0xfeedface,
         MH_CIGAM = 0xcefaedfe,
         MH_MAGIC_64 = 0xfeedfacf,
-        MH_CIGAM_64 = 0xcffaedfe
+        MH_CIGAM_64 = 0xcffaedfe,
+        // https://developer.apple.com/documentation/kernel/fat_header/1558632-magic/
+        // https://opensource.apple.com/source/file/file-80.40.2/file/magic/Magdir/cafebabe.auto.html
+        FAT_MAGIC = 0xcafebabe,
+        FAT_CIGAM = 0xbebafeca,
     }
 
     public static bool IsMachOImage(string filePath)