Various Windows fixes

Improve handling of unicode on Windows
Disable a few crates on Windows that abuse unix APIs too much

Signed-off-by: Peter Atashian <retep998@gmail.com>

Makefile

@@ -52,7 +52,6 @@ PROGS       := \
   dirname \
   echo \
   env \
-  du \
   expand \
   factor \
   false \
@@ -62,7 +61,6 @@ PROGS       := \
   hashsum \
   ln \
   mkdir \
-  mv \
   nl \
   nproc \
   od \
@@ -85,13 +83,11 @@ PROGS       := \
   tac \
   tee \
   test \
-  touch \
   tr \
   true \
   truncate \
   tsort \
   unexpand \
-  unlink \
   uniq \
   wc \
   yes \
@@ -101,6 +97,7 @@ PROGS       := \
 
 UNIX_PROGS := \
   chroot \
+  du \
   groups \
   hostid \
   hostname \
@@ -108,12 +105,15 @@ UNIX_PROGS := \
   kill \
   logname \
   mkfifo \
+  mv \
   nice \
   nohup \
   stdbuf \
   timeout \
+  touch \
   tty \
   uname \
+  unlink \
   uptime \
   users
 
@@ -256,6 +256,10 @@ define DEP_BUILD
 DEP_$(1):
 ifeq ($(1),crypto)
 	cd $(BASEDIR)/deps && $(CARGO) build --package rust-crypto --release
+else ifeq ($(1),kernel32)
+	cd $(BASEDIR)/deps && $(CARGO) build --package kernel32-sys --release
+else ifeq ($(1),advapi32)
+	cd $(BASEDIR)/deps && $(CARGO) build --package advapi32-sys --release
 else
 	cd $(BASEDIR)/deps && $(CARGO) build --package $(1) --release
 endif

deps/Cargo.toml

@@ -17,3 +17,6 @@ rust-crypto = "0.2.31"
 rustc-serialize = "0.3.15"
 time = "0.1.26"
 unicode-width = "0.1.1"
+winapi = "0.2"
+advapi32-sys = "0.1"
+kernel32-sys = "0.1"

src/chmod/chmod.rs

@@ -124,17 +124,17 @@ fn verify_mode(modes: &str) -> Result<(), String> {
 #[cfg(windows)]
 #[inline]
 // XXX: THIS IS NOT TESTED!!!
-fn verify_mode(mode: &str) -> Result<(), String> {
+fn verify_mode(modes: &str) -> Result<(), String> {
     let re: regex::Regex = Regex::new(r"^[ugoa]*(?:[-+=](?:([rwxXst]*)|[ugo]))+|[-+=]?([0-7]+)$").unwrap();
     for mode in modes.split(',') {
         match re.captures(mode) {
             Some(cap) => {
-                let symbols = cap.at(1);
-                let numbers = cap.at(2);
+                let symbols = cap.at(1).unwrap();
+                let numbers = cap.at(2).unwrap();
                 if symbols.contains("s") || symbols.contains("t") {
-                    return Err("The 's' and 't' modes are not supported on Windows".to_string());
-                } else if numbers.len() >= 4 && numbers.slice_to(num_len - 3).find(|ch| ch != '0').is_some() {
-                    return Err("Setuid, setgid, and sticky modes are not supported on Windows".to_string());
+                    return Err("The 's' and 't' modes are not supported on Windows".into());
+                } else if numbers.len() >= 4 && numbers[..numbers.len() - 3].find(|ch| ch != '0').is_some() {
+                    return Err("Setuid, setgid, and sticky modes are not supported on Windows".into());
                 }
             }
             None => return Err(format!("invalid mode '{}'", mode))
@@ -191,6 +191,14 @@ fn chmod(files: Vec<String>, changes: bool, quiet: bool, verbose: bool, preserve
     r
 }
 
+#[cfg(windows)]
+fn chmod_file(file: &Path, name: &str, changes: bool, quiet: bool, verbose: bool, fmode: Option<libc::mode_t>, cmode: Option<&String>) -> Result<(), i32> {
+    // chmod is useless on Windows
+    // it doesn't set any permissions at all
+    // instead it just sets the readonly attribute on the file
+    Err(0)
+}
+#[cfg(unix)]
 fn chmod_file(file: &Path, name: &str, changes: bool, quiet: bool, verbose: bool, fmode: Option<libc::mode_t>, cmode: Option<&String>) -> Result<(), i32> {
     let path = CString::new(name).unwrap_or_else(|e| panic!("{}", e));
     match fmode {

src/common/util.rs

@@ -7,8 +7,6 @@
  * file that was distributed with this source code.
  */
 
-extern crate libc;
-
 macro_rules! show_error(
     ($($args:tt)+) => ({
         pipe_write!(&mut ::std::io::stderr(), "{}: error: ", ::NAME);
@@ -46,14 +44,14 @@ macro_rules! eprintln(
 macro_rules! crash(
     ($exitcode:expr, $($args:tt)+) => ({
         show_error!($($args)+);
-        unsafe { ::util::libc::exit($exitcode as ::util::libc::c_int); }
+        ::std::process::exit($exitcode)
     })
 );
 
 #[macro_export]
 macro_rules! exit(
     ($exitcode:expr) => ({
-        unsafe { ::util::libc::exit($exitcode); }
+        ::std::process::exit($exitcode)
     })
 );
 

src/common/wide.rs

@@ -0,0 +1,35 @@
+/*
+ * This file is part of the uutils coreutils package.
+ *
+ * (c) Peter Atashian <retep998@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+use std::ffi::{OsStr, OsString};
+use std::os::windows::ffi::{OsStrExt, OsStringExt};
+pub trait ToWide {
+    fn to_wide(&self) -> Vec<u16>;
+    fn to_wide_null(&self) -> Vec<u16>;
+}
+impl<T> ToWide for T where T: AsRef<OsStr> {
+    fn to_wide(&self) -> Vec<u16> {
+        self.as_ref().encode_wide().collect()
+    }
+    fn to_wide_null(&self) -> Vec<u16> {
+        self.as_ref().encode_wide().chain(Some(0)).collect()
+    }
+}
+pub trait FromWide {
+    fn from_wide(wide: &[u16]) -> Self;
+    fn from_wide_null(wide: &[u16]) -> Self;
+}
+impl FromWide for String {
+    fn from_wide(wide: &[u16]) -> String {
+        OsString::from_wide(wide).to_string_lossy().into_owned()
+    }
+    fn from_wide_null(wide: &[u16]) -> String {
+        let len = wide.iter().take_while(|&&c| c != 0).count();
+        OsString::from_wide(&wide[..len]).to_string_lossy().into_owned()
+    }
+}

src/du/deps.mk

@@ -1 +1 @@
-DEPLIBS += time
+DEPLIBS += time kernel32 winapi

src/fmt/fmt.rs

@@ -25,7 +25,7 @@ macro_rules! silent_unwrap(
     ($exp:expr) => (
         match $exp {
             Ok(_) => (),
-            Err(_) => unsafe { ::util::libc::exit(1) }
+            Err(_) => ::std::process::exit(1),
         }
     )
 );

src/hashsum/deps.mk

@@ -1 +1 @@
-DEPLIBS += regex regex-syntax crypto rand rustc-serialize time
+DEPLIBS += regex regex-syntax crypto rand rustc-serialize time winapi kernel32

src/mkdir/mkdir.rs

@@ -136,6 +136,8 @@ fn mkdir(path: &Path, mode: u16, verbose: bool) -> i32 {
         show_info!("created directory '{}'", path.display());
     }
 
+    #[cfg(unix)]
+    fn chmod(path: &Path, mode: u16) -> i32 {
         let directory = CString::new(path.as_os_str().to_str().unwrap()).unwrap_or_else(|e| crash!(1, "{}", e));
         let mode = mode as libc::mode_t;
 
@@ -143,6 +145,12 @@ fn mkdir(path: &Path, mode: u16, verbose: bool) -> i32 {
             show_info!("{}: errno {}", path.display(), Error::last_os_error().raw_os_error().unwrap());
             return 1;
         }
-
         0
+    }
+    #[cfg(windows)]
+    fn chmod(path: &Path, mode: u16) -> i32 {
+        // chmod on Windows only sets the readonly flag, which isn't even honored on directories
+        0
+    }
+    chmod(path, mode)
 }

src/sync/deps.mk

@@ -0,0 +1 @@
+DEPLIBS += winapi kernel32

src/sync/sync.rs

@@ -35,103 +35,62 @@ mod platform {
 
 #[cfg(windows)]
 mod platform {
-    pub use super::libc;
-    use std::{mem, string};
-    use std::ptr::null;
+    extern crate winapi;
+    extern crate kernel32;
+    #[path = "../../common/wide.rs"] mod wide;
+    use std::{mem};
+    use std::fs::OpenOptions;
+    use std::io::{Write};
+    use std::os::windows::prelude::*;
+    use self::wide::{FromWide, ToWide};
 
-    extern "system" {
-        fn CreateFileA(lpFileName: *const libc::c_char,
-                      dwDesiredAccess: libc::uint32_t,
-                      dwShareMode: libc::uint32_t,
-                      lpSecurityAttributes: *const libc::c_void, // *LPSECURITY_ATTRIBUTES
-                      dwCreationDisposition: libc::uint32_t,
-                      dwFlagsAndAttributes: libc::uint32_t,
-                      hTemplateFile: *const libc::c_void) -> *const libc::c_void;
-        fn GetDriveTypeA(lpRootPathName: *const libc::c_char) -> libc::c_uint;
-        fn GetLastError() -> libc::uint32_t;
-        fn FindFirstVolumeA(lpszVolumeName: *mut libc::c_char,
-                            cchBufferLength: libc::uint32_t) -> *const libc::c_void;
-        fn FindNextVolumeA(hFindVolume: *const libc::c_void,
-                           lpszVolumeName: *mut libc::c_char,
-                           cchBufferLength: libc::uint32_t) -> libc::c_int;
-        fn FindVolumeClose(hFindVolume: *const libc::c_void) -> libc::c_int;
-        fn FlushFileBuffers(hFile: *const libc::c_void) -> libc::c_int;
-    }
-
-    #[allow(unused_unsafe)]
     unsafe fn flush_volume(name: &str) {
-        let name_buffer = name.to_c_str().as_ptr();
-        if 0x00000003 == GetDriveTypeA(name_buffer) { // DRIVE_FIXED
+        let name_wide = name.to_wide_null();
+        if kernel32::GetDriveTypeW(name_wide.as_ptr()) == winapi::DRIVE_FIXED {
             let sliced_name = &name[..name.len() - 1]; // eliminate trailing backslash
-            let sliced_name_buffer = sliced_name.to_c_str().as_ptr();
-            match CreateFileA(sliced_name_buffer,
-                              0xC0000000, // GENERIC_WRITE
-                              0x00000003, // FILE_SHARE_WRITE,
-                              null(),
-                              0x00000003, // OPEN_EXISTING
-                              0,
-                              null()) {
-                -1 => { // INVALID_HANDLE_VALUE
-                    crash!(GetLastError(), "failed to create volume handle");
-                }
-                handle => {
-                    if FlushFileBuffers(handle) == 0 {
-                        crash!(GetLastError(), "failed to flush file buffer");
-                    }
-                }
-            }
-        }
-    }
-
-    #[allow(unused_unsafe)]
-    unsafe fn find_first_volume() -> (String, *const libc::c_void) {
-        let mut name: [libc::c_char; 260] = mem::uninitialized(); // MAX_PATH
-        match FindFirstVolumeA(name.as_mut_ptr(),
-                               name.len() as libc::uint32_t) {
-            -1 => { // INVALID_HANDLE_VALUE
-                crash!(GetLastError(), "failed to find first volume");
-            }
-            handle => {
-                (string::raw::from_buf(name.as_ptr() as *const u8), handle)
+            match OpenOptions::new().write(true).open(sliced_name) {
+                Ok(file) => if kernel32::FlushFileBuffers(file.as_raw_handle()) == 0 {
+                    crash!(kernel32::GetLastError() as i32, "failed to flush file buffer");
+                },
+                Err(e) => crash!(e.raw_os_error().unwrap_or(1), "failed to create volume handle")
             }
         }
     }
 
-    #[allow(unused_unsafe)]
+    unsafe fn find_first_volume() -> (String, winapi::HANDLE) {
+        let mut name: [winapi::WCHAR; winapi::MAX_PATH] = mem::uninitialized();
+        let handle = kernel32::FindFirstVolumeW(name.as_mut_ptr(), name.len() as winapi::DWORD);
+        if handle == winapi::INVALID_HANDLE_VALUE {
+            crash!(kernel32::GetLastError() as i32, "failed to find first volume");
+        }
+        (String::from_wide_null(&name), handle)
+    }
+
     unsafe fn find_all_volumes() -> Vec<String> {
-        match find_first_volume() {
-            (first_volume, next_volume_handle) => {
+        let (first_volume, next_volume_handle) = find_first_volume();
         let mut volumes = vec![first_volume];
         loop {
-                    let mut name: [libc::c_char; 260] = mem::uninitialized(); // MAX_PATH
-                    match FindNextVolumeA(next_volume_handle,
-                                          name.as_mut_ptr(),
-                                          name.len() as libc::uint32_t) {
-                        0 => {
-                            match GetLastError() {
-                                0x12 => { // ERROR_NO_MORE_FILES
-                                    FindVolumeClose(next_volume_handle); // ignore FindVolumeClose() failures
-                                    break;
+            let mut name: [winapi::WCHAR; winapi::MAX_PATH] = mem::uninitialized();
+            if kernel32::FindNextVolumeW(
+                next_volume_handle, name.as_mut_ptr(), name.len() as winapi::DWORD
+            ) == 0 {
+                match kernel32::GetLastError() {
+                    winapi::ERROR_NO_MORE_FILES => {
+                        kernel32::FindVolumeClose(next_volume_handle);
+                        return volumes
+                    },
+                    err => crash!(err as i32, "failed to find next volume"),
                 }
-                                err => {
-                                    crash!(err, "failed to find next volume");
-                                }
-                            }
-                        }
-                        _ => {
-                            volumes.push(string::raw::from_buf(name.as_ptr() as *const u8));
-                        }
-                    }
-                }
-                volumes
+            } else {
+                volumes.push(String::from_wide_null(&name));
             }
         }
     }
 
-    pub unsafe fn do_sync() -> int {
+    pub unsafe fn do_sync() -> isize {
         let volumes = find_all_volumes();
-        for vol in volumes.iter() {
-            flush_volume(&vol);
+        for vol in &volumes {
+            flush_volume(vol);
         }
         0
     }

src/test/test.rs

@@ -20,8 +20,10 @@ use std::str::{from_utf8};
 static NAME: &'static str = "test";
 
 // TODO: decide how to handle non-UTF8 input for all the utils
+// Definitely don't use [u8], try keeping it as OsStr or OsString instead
 pub fn uumain(_: Vec<String>) -> i32 {
     let args = args_os().collect::<Vec<OsString>>();
+    // This is completely disregarding valid windows paths that aren't valid unicode
     let args = args.iter().map(|a| a.to_bytes().unwrap()).collect::<Vec<&[u8]>>();
     if args.len() == 0 {
         return 2;
@@ -382,32 +384,26 @@ fn path(path: &[u8], cond: PathCondition) -> bool {
 
 #[cfg(windows)]
 fn path(path: &[u8], cond: PathCondition) -> bool {
-    use std::old_io::{TypeFile, TypeDirectory, TypeBlockSpecial, TypeNamedPipe};
-    use std::old_io::fs::{stat};
-    use std::old_path::{Path};
-
-    let path = match Path::new_opt(path) {
-        Some(p) => p,
-        None => return false,
-    };
-    let stat = match stat(&path) {
+    use std::fs::metadata;
+    let path = from_utf8(path).unwrap();
+    let stat = match metadata(path) {
         Ok(s) => s,
         _ => return false,
     };
     match cond {
-        BlockSpecial     => stat.kind == TypeBlockSpecial,
-        CharacterSpecial => false,
-        Directory        => stat.kind == TypeDirectory,
-        Exists           => true,
-        Regular          => stat.kind == TypeFile,
-        GroupIDFlag      => false,
-        SymLink          => false,
-        FIFO             => stat.kind == TypeNamedPipe,
-        Readable         => false, // TODO
-        Socket           => false, // TODO?
-        NonEmpty         => stat.size > 0,
-        UserIDFlag       => false,
-        Writable         => false, // TODO
-        Executable       => false, // TODO
+        PathCondition::BlockSpecial     => false,
+        PathCondition::CharacterSpecial => false,
+        PathCondition::Directory        => stat.is_dir(),
+        PathCondition::Exists           => true,
+        PathCondition::Regular          => stat.is_file(),
+        PathCondition::GroupIDFlag      => false,
+        PathCondition::SymLink          => false,
+        PathCondition::FIFO             => false,
+        PathCondition::Readable         => false, // TODO
+        PathCondition::Socket           => false,
+        PathCondition::NonEmpty         => stat.len() > 0,
+        PathCondition::UserIDFlag       => false,
+        PathCondition::Writable         => false, // TODO
+        PathCondition::Executable       => false, // TODO
     }
 }

src/whoami/deps.mk

@@ -0,0 +1 @@
+DEPLIBS += winapi advapi32 kernel32

src/whoami/platform/windows.rs

@@ -7,21 +7,22 @@
  * file that was distributed with this source code.
  */
 
-use ::libc;
+extern crate winapi;
+extern crate advapi32;
+
+#[path = "../../common/wide.rs"] #[macro_use] mod wide;
+
 use std::mem;
 use std::io::Write;
+use std::ffi::OsString;
+use std::os::windows::ffi::OsStringExt;
+use self::wide::FromWide;
 
-extern "system" {
-    pub fn GetUserNameA(out: *mut libc::c_char, len: *mut libc::uint32_t) -> libc::uint8_t;
-}
-
-#[allow(unused_unsafe)]
 pub unsafe fn getusername() -> String {
-    // usernames can only be up to 104 characters in windows
-    let mut buffer: [libc::c_char; 105] = mem::uninitialized();
-
-    if !GetUserNameA(buffer.as_mut_ptr(), &mut (buffer.len() as libc::uint32_t)) == 0 {
-        crash!(1, "username is too long");
+    let mut buffer: [winapi::WCHAR; winapi::UNLEN as usize + 1] = mem::uninitialized();
+    let mut len = buffer.len() as winapi::DWORD;
+    if advapi32::GetUserNameW(buffer.as_mut_ptr(), &mut len) == 0 {
+        crash!(1, "failed to get username");
     }
-    String::from_utf8_lossy(::std::ffi::CStr::from_ptr(buffer.as_ptr()).to_bytes()).to_string()
+    String::from_wide(&buffer[..len as usize - 1])
 }