├── .github └── workflows │ └── ci.yml ├── .gitignore ├── Cargo.toml ├── LICENSE-APACHE ├── LICENSE-MIT ├── README.md ├── src └── lib.rs └── tests ├── i_am_executable ├── i_am_executable_and_symlink ├── i_am_executable_on_windows.bat ├── i_am_not_executable ├── i_am_not_executable_and_symlink └── tests.rs /.github/workflows/ci.yml: -------------------------------------------------------------------------------- 1 | name: CI 2 | 3 | on: 4 | push: 5 | branches: [ "main" ] 6 | pull_request: 7 | branches: [ "main" ] 8 | 9 | env: 10 | CARGO_TERM_COLOR: always 11 | 12 | jobs: 13 | test: 14 | strategy: 15 | matrix: 16 | image: ["ubuntu-latest", "macos-latest", "windows-latest"] 17 | rust: ["stable"] 18 | include: 19 | - image: "ubuntu-latest" 20 | rust: "beta" 21 | - image: "ubuntu-latest" 22 | rust: "nightly" 23 | - image: "ubuntu-latest" 24 | rust: "1.80.0" 25 | runs-on: ${{matrix.image}} 26 | steps: 27 | - name: Install `rustup` 28 | run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile=minimal 29 | - name: Install Rust channel 30 | run: rustup toolchain install ${{matrix.rust}} && rustup default ${{matrix.rust}} 31 | - uses: actions/checkout@v4 32 | - name: Run tests 33 | run: cargo test --verbose 34 | 35 | wasi-test: 36 | runs-on: ubuntu-latest 37 | steps: 38 | - name: Install `rustup` 39 | run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile=minimal 40 | - name: Install Rust channel 41 | run: rustup toolchain install stable && rustup default stable 42 | - name: Install `cargo wasi` 43 | run: cargo install cargo-wasi 44 | - name: Install `wasmtime` 45 | run: curl https://wasmtime.dev/install.sh -sSf | bash 46 | - name: add `wasmtime` to PATH 47 | run: echo $HOME/.wasmtime/bin >> $GITHUB_PATH 48 | - uses: actions/checkout@v4 49 | - name: Run `cargo wasi test` 50 | run: cargo wasi test --verbose 51 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | /target/ 2 | **/*.rs.bk 3 | Cargo.lock 4 | -------------------------------------------------------------------------------- /Cargo.toml: -------------------------------------------------------------------------------- 1 | [package] 2 | authors = ["Nick Fitzgerald "] 3 | categories = ["filesystem"] 4 | description = "Is there an executable file at the given path?" 5 | documentation = "https://docs.rs/is_executable" 6 | keywords = ["executable", "path", "file", "permissions"] 7 | license = "Apache-2.0/MIT" 8 | name = "is_executable" 9 | readme = "./README.md" 10 | exclude = ["/appveyor.yml"] 11 | repository = "https://github.com/fitzgen/is_executable" 12 | version = "1.0.4" 13 | edition = "2021" 14 | 15 | [target.'cfg(target_os = "windows")'.dependencies] 16 | winapi = { version = "0.3", features = ["winbase"] } 17 | 18 | [dev-dependencies] 19 | diff = "0.1.10" 20 | -------------------------------------------------------------------------------- /LICENSE-APACHE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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IN NO EVENT 21 | SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 22 | CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23 | OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR 24 | IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 25 | DEALINGS IN THE SOFTWARE. 26 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # `is_executable` 2 | 3 | Is there an executable file at the given path? 4 | 5 | [![](https://docs.rs/is_executable/badge.svg)](https://docs.rs/is_executable/) [![](https://img.shields.io/crates/v/is_executable.svg) ![](https://img.shields.io/crates/d/is_executable.png)](https://crates.io/crates/is_executable) [![CI](https://github.com/fitzgen/is_executable/actions/workflows/ci.yml/badge.svg)](https://github.com/fitzgen/is_executable/actions/workflows/ci.yml) 6 | 7 | A small helper function which determines whether or not the given path points to 8 | an executable file. If there is no file at the given path, or the file is not 9 | executable, then `false` is returned. When there is a file and the file is 10 | executable, then `true` is returned. 11 | 12 | This crate works on both Unix-based operating systems (macOS, Linux, FreeBSD, 13 | etc...) and Windows. 14 | 15 | Does not help with [time-of-check to time-of use 16 | (TOCTOU)](https://en.wikipedia.org/wiki/Time-of-check_to_time-of-use) races. 17 | 18 | The API comes in two flavors: 19 | 20 | 1. An extension trait to add an `is_executable` method on `std::path::Path`: 21 | 22 | ```rust 23 | use std::path::Path; 24 | use is_executable::IsExecutable; 25 | 26 | fn main() { 27 | let path = Path::new("some/path/to/a/file"); 28 | 29 | // Determine if `path` is executable. 30 | if path.is_executable() { 31 | println!("The path is executable!"); 32 | } else { 33 | println!("The path is _not_ executable!"); 34 | } 35 | } 36 | ``` 37 | 38 | 2. For convenience, a standalone `is_executable` function, which takes any 39 | `AsRef`: 40 | 41 | ```rust 42 | use std::path::Path; 43 | 44 | use is_executable::is_executable; 45 | 46 | fn main() { 47 | let path = Path::new("some/path/to/a/file"); 48 | 49 | // Determine if `path` is executable. 50 | if is_executable(&path) { 51 | println!("The path is executable!"); 52 | } else { 53 | println!("The path is _not_ executable!"); 54 | } 55 | } 56 | ``` 57 | 58 | License: Apache-2.0/MIT 59 | -------------------------------------------------------------------------------- /src/lib.rs: -------------------------------------------------------------------------------- 1 | #![doc = include_str!("../README.md")] 2 | 3 | #[cfg(target_os = "windows")] 4 | extern crate winapi; 5 | 6 | use std::path::Path; 7 | 8 | /// Returns `true` if there is a file at the given path and it is 9 | /// executable. Returns `false` otherwise. 10 | /// 11 | /// See the module documentation for details. 12 | pub fn is_executable

(path: P) -> bool 13 | where 14 | P: AsRef, 15 | { 16 | path.as_ref().is_executable() 17 | } 18 | 19 | /// An extension trait for `std::fs::Path` providing an `is_executable` method. 20 | /// 21 | /// See the module documentation for examples. 22 | pub trait IsExecutable { 23 | /// Returns `true` if there is a file at the given path and it is 24 | /// executable. Returns `false` otherwise. 25 | /// 26 | /// See the module documentation for details. 27 | fn is_executable(&self) -> bool; 28 | } 29 | 30 | #[cfg(unix)] 31 | mod unix { 32 | use std::os::unix::fs::PermissionsExt; 33 | use std::path::Path; 34 | 35 | use super::IsExecutable; 36 | 37 | impl IsExecutable for Path { 38 | fn is_executable(&self) -> bool { 39 | let metadata = match self.metadata() { 40 | Ok(metadata) => metadata, 41 | Err(_) => return false, 42 | }; 43 | let permissions = metadata.permissions(); 44 | metadata.is_file() && permissions.mode() & 0o111 != 0 45 | } 46 | } 47 | } 48 | 49 | #[cfg(target_os = "windows")] 50 | mod windows { 51 | use std::os::windows::ffi::OsStrExt; 52 | use std::path::Path; 53 | 54 | use winapi::ctypes::{c_ulong, wchar_t}; 55 | use winapi::um::winbase::GetBinaryTypeW; 56 | 57 | use super::IsExecutable; 58 | 59 | impl IsExecutable for Path { 60 | fn is_executable(&self) -> bool { 61 | // First, ensure that the file exists 62 | if !self.exists() { 63 | return false; 64 | } 65 | 66 | // Check using file extension 67 | if let Some(pathext) = std::env::var_os("PATHEXT") { 68 | if let Some(extension) = self.extension() { 69 | let extension = extension.to_string_lossy(); 70 | 71 | // Originally taken from: 72 | // https://github.com/nushell/nushell/blob/93e8f6c05e1e1187d5b674d6b633deb839c84899/crates/nu-cli/src/completion/command.rs#L64-L74 73 | return pathext 74 | .to_string_lossy() 75 | .split(';') 76 | // Filter out empty tokens and ';' at the end 77 | .filter(|f| f.len() > 1) 78 | .any(|ext| { 79 | // Cut off the leading '.' character 80 | let ext = &ext[1..]; 81 | extension.eq_ignore_ascii_case(ext) 82 | }); 83 | } 84 | } 85 | 86 | // Check using file properties 87 | // This code is only reached if there is no file extension or retrieving PATHEXT fails 88 | let windows_string = self 89 | .as_os_str() 90 | .encode_wide() 91 | .chain(Some(0)) 92 | .collect::>(); 93 | let windows_string_ptr = windows_string.as_ptr(); 94 | 95 | let mut binary_type: c_ulong = 42; 96 | let binary_type_ptr = &mut binary_type as *mut c_ulong; 97 | 98 | let ret = unsafe { GetBinaryTypeW(windows_string_ptr, binary_type_ptr) }; 99 | if binary_type_ptr.is_null() { 100 | return false; 101 | } 102 | if ret != 0 { 103 | let binary_type = unsafe { *binary_type_ptr }; 104 | match binary_type { 105 | 0 // A 32-bit Windows-based application 106 | | 1 // An MS-DOS-based application 107 | | 2 // A 16-bit Windows-based application 108 | | 3 // A PIF file that executes an MS-DOS-based application 109 | | 4 // A POSIX – based application 110 | | 5 // A 16-bit OS/2-based application 111 | | 6 // A 64-bit Windows-based application 112 | => return true, 113 | _ => (), 114 | } 115 | } 116 | 117 | false 118 | } 119 | } 120 | } 121 | 122 | // For WASI, we can't check if a file is executable 123 | // Since wasm and wasi 124 | // is not supposed to add executables ideologically, 125 | // specify them collectively 126 | #[cfg(any(target_os = "wasi", target_family = "wasm"))] 127 | mod wasm { 128 | use std::path::Path; 129 | 130 | use super::IsExecutable; 131 | 132 | impl IsExecutable for Path { 133 | fn is_executable(&self) -> bool { 134 | false 135 | } 136 | } 137 | } 138 | -------------------------------------------------------------------------------- /tests/i_am_executable: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/fitzgen/is_executable/1b6dfa126abb19b4fac07a869c7bb6d0198c12ed/tests/i_am_executable -------------------------------------------------------------------------------- /tests/i_am_executable_and_symlink: -------------------------------------------------------------------------------- 1 | i_am_executable -------------------------------------------------------------------------------- /tests/i_am_executable_on_windows.bat: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/fitzgen/is_executable/1b6dfa126abb19b4fac07a869c7bb6d0198c12ed/tests/i_am_executable_on_windows.bat -------------------------------------------------------------------------------- /tests/i_am_not_executable: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/fitzgen/is_executable/1b6dfa126abb19b4fac07a869c7bb6d0198c12ed/tests/i_am_not_executable -------------------------------------------------------------------------------- /tests/i_am_not_executable_and_symlink: -------------------------------------------------------------------------------- 1 | i_am_not_executable -------------------------------------------------------------------------------- /tests/tests.rs: -------------------------------------------------------------------------------- 1 | extern crate diff; 2 | extern crate is_executable; 3 | 4 | use is_executable::is_executable; 5 | 6 | #[cfg(unix)] 7 | mod unix { 8 | use super::*; 9 | 10 | #[test] 11 | fn executable() { 12 | assert!(is_executable("./tests/i_am_executable")); 13 | } 14 | 15 | #[test] 16 | fn executable_symlink() { 17 | assert!(is_executable("./tests/i_am_executable_and_symlink")); 18 | } 19 | 20 | #[test] 21 | fn not_executable_symlink() { 22 | assert!(!is_executable("./tests/i_am_not_executable_and_symlink")); 23 | } 24 | 25 | #[test] 26 | fn not_executable_directory() { 27 | assert!(!is_executable(".")); 28 | } 29 | } 30 | 31 | #[cfg(target_os = "windows")] 32 | mod windows { 33 | use super::*; 34 | 35 | #[test] 36 | fn executable() { 37 | assert!(is_executable("C:\\Windows\\explorer.exe")); 38 | } 39 | 40 | #[test] 41 | fn by_extension() { 42 | assert!(is_executable("./tests/i_am_executable_on_windows.bat")); 43 | } 44 | 45 | #[test] 46 | fn non_existent_correct_extension() { 47 | assert!(!is_executable("./tests/non_existent.exe")); 48 | } 49 | } 50 | 51 | #[cfg(any(target_os = "wasi", target_family = "wasm"))] 52 | mod wasm { 53 | use super::*; 54 | 55 | #[test] 56 | fn executable() { 57 | assert!(!is_executable("./tests/i_am_executable")); 58 | } 59 | 60 | #[test] 61 | fn executable_symlink() { 62 | assert!(!is_executable("./tests/i_am_executable_and_symlink")); 63 | } 64 | 65 | #[test] 66 | fn not_executable_symlink() { 67 | assert!(!is_executable("./tests/i_am_not_executable_and_symlink")); 68 | } 69 | 70 | #[test] 71 | fn not_executable_directory() { 72 | assert!(!is_executable(".")); 73 | } 74 | } 75 | 76 | #[test] 77 | fn not_executable() { 78 | assert!(!is_executable("./tests/i_am_not_executable")); 79 | } 80 | 81 | #[test] 82 | fn non_existant() { 83 | assert!(!is_executable("./tests/this-file-does-not-exist")); 84 | } 85 | --------------------------------------------------------------------------------