Merging upstream version 1.70.0+dfsg2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 505 insertions, 0 deletions

diff --git a/vendor/dunce/.cargo-checksum.json b/vendor/dunce/.cargo-checksum.json
new file mode 100644
index 000000000..3bb53b2b9
--- /dev/null
+++ b/vendor/dunce/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"97bcc4c25e6528ec52bf3df5202dc0e9eacdd3e7ff93c51f5d89c41b88e63b5f","LICENSE":"a2010f343487d3f7618affe54f789f5487602331c0a8d03f49e9a7c547cf0499","README.md":"890653901012199b8780375755a8a0b5b6eafcded2c3bccace87099bdfba9274","src/lib.rs":"ed0d70d8b377aed2d43d574acdcc54a4bc33a73241c4c7058838197543f48156"},"package":"0bd4b30a6560bbd9b4620f4de34c3f14f60848e58a9b7216801afcb4c7b31c3c"}
\ No newline at end of file
diff --git a/vendor/dunce/Cargo.toml b/vendor/dunce/Cargo.toml
new file mode 100644
index 000000000..f414baec2
--- /dev/null
+++ b/vendor/dunce/Cargo.toml
@@ -0,0 +1,42 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2018"
+name = "dunce"
+version = "1.0.3"
+authors = ["Kornel <kornel@geekhood.net>"]
+description = "Normalize Windows paths to the most compatible format, avoiding UNC where possible"
+homepage = "https://lib.rs/crates/dunce"
+documentation = "https://docs.rs/dunce"
+readme = "README.md"
+keywords = [
+    "realpath",
+    "unc",
+    "canonicalize",
+    "windows",
+    "deunc",
+]
+categories = ["filesystem"]
+license = "CC0-1.0 OR MIT-0"
+repository = "https://gitlab.com/kornelski/dunce"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[badges.appveyor]
+repository = "pornel/dunce"
+
+[badges.gitlab]
+repository = "kornelski/dunce"
+
+[badges.maintenance]
+status = "passively-maintained"
diff --git a/vendor/dunce/LICENSE b/vendor/dunce/LICENSE
new file mode 100644
index 000000000..0e259d42c
--- /dev/null
+++ b/vendor/dunce/LICENSE
@@ -0,0 +1,121 @@
+Creative Commons Legal Code
+
+CC0 1.0 Universal
+
+    CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE
+    LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN
+    ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS
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+    PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM
+    THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED
+    HEREUNDER.
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+Statement of Purpose
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+1. Copyright and Related Rights. A Work made available under CC0 may be
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+
+3. Public License Fallback. Should any part of the Waiver for any reason
+be judged legally invalid or ineffective under applicable law, then the
+Waiver shall be preserved to the maximum extent permitted taking into
+account Affirmer's express Statement of Purpose. In addition, to the
+extent the Waiver is so judged Affirmer hereby grants to each affected
+person a royalty-free, non transferable, non sublicensable, non exclusive,
+irrevocable and unconditional license to exercise Affirmer's Copyright and
+Related Rights in the Work (i) in all territories worldwide, (ii) for the
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+time extensions), (iii) in any current or future medium and for any number
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+"License"). The License shall be deemed effective as of the date CC0 was
+applied by Affirmer to the Work. Should any part of the License for any
+reason be judged legally invalid or ineffective under applicable law, such
+partial invalidity or ineffectiveness shall not invalidate the remainder
+of the License, and in such case Affirmer hereby affirms that he or she
+will not (i) exercise any of his or her remaining Copyright and Related
+Rights in the Work or (ii) assert any associated claims and causes of
+action with respect to the Work, in either case contrary to Affirmer's
+express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+
+ a. No trademark or patent rights held by Affirmer are waived, abandoned,
+    surrendered, licensed or otherwise affected by this document.
+ b. Affirmer offers the Work as-is and makes no representations or
+    warranties of any kind concerning the Work, express, implied,
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+    title, merchantability, fitness for a particular purpose, non
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+    the greatest extent permissible under applicable law.
+ c. Affirmer disclaims responsibility for clearing rights of other persons
+    that may apply to the Work or any use thereof, including without
+    limitation any person's Copyright and Related Rights in the Work.
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+ d. Affirmer understands and acknowledges that Creative Commons is not a
+    party to this document and has no duty or obligation with respect to
+    this CC0 or use of the Work.
diff --git a/vendor/dunce/README.md b/vendor/dunce/README.md
new file mode 100644
index 000000000..40a9c1032
--- /dev/null
+++ b/vendor/dunce/README.md
@@ -0,0 +1,17 @@
+# Dunce (de-UNC)
+
+In Windows the regular paths (`C:\foo`) are supported by all programs,
+but have lots of bizarre restrictions for backwards compatibility with MS-DOS.
+There are also Windows NT UNC paths (`\\?\C:\foo`), which are more robust and with fewer gotchas,
+but are rarely supported by Windows programs. Even Microsoft's own!
+
+This crate converts Windows UNC paths to the MS-DOS-compatible format whenever possible,
+but leaves UNC paths as-is when they can't be unambiguously expressed in a simpler way.
+This allows legacy programs to access all paths they can possibly access,
+and doesn't break any paths for UNC-aware programs.
+
+In Rust the worst UNC offender is the `fs::canonicalize()` function. This crate provides
+a drop-in replacement for it that returns paths you'd expect.
+
+On non-Windows platforms these functions leave paths unmodified, so it's safe to use them
+unconditionally for all platforms.
diff --git a/vendor/dunce/src/lib.rs b/vendor/dunce/src/lib.rs
new file mode 100644
index 000000000..8f11ec0e2
--- /dev/null
+++ b/vendor/dunce/src/lib.rs
@@ -0,0 +1,324 @@
+//! Filesystem paths in Windows are a total mess. This crate normalizes paths to the most
+//! compatible (but still correct) format, so that you don't have to worry about the mess.
+//!
+//! In Windows the regular/legacy paths (`C:\foo`) are supported by all programs, but have
+//! lots of bizarre restrictions for backwards compatibility with MS-DOS.
+//!
+//! And there are Windows NT UNC paths (`\\?\C:\foo`), which are more robust and with fewer
+//! gotchas, but are rarely supported by Windows programs. Even Microsoft's own!
+//!
+//! This crate converts paths to legacy format whenever possible, but leaves UNC paths as-is
+//! when they can't be unambiguously expressed in a simpler way. This allows legacy programs
+//! to access all paths they can possibly access, and UNC-aware programs to access all paths.
+//!
+//! On non-Windows platforms these functions leave paths unmodified, so it's safe to use them
+//! unconditionally for all platforms.
+//!
+//! Parsing is based on https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx
+//!
+//! [Project homepage](https://crates.rs/crates/dunce).
+#![doc(html_logo_url = "https://assets.gitlab-static.net/uploads/-/system/project/avatar/4717715/dyc.png")]
+
+#[cfg(any(windows, test))]
+use std::ffi::OsStr;
+use std::fs;
+use std::io;
+#[cfg(windows)]
+use std::os::windows::ffi::OsStrExt;
+#[cfg(windows)]
+use std::path::{Component, Prefix};
+use std::path::{Path, PathBuf};
+
+/// Takes any path, and when possible, converts Windows UNC paths to regular paths.
+///
+/// On non-Windows this is no-op.
+///
+/// `\\?\C:\Windows` will be converted to `C:\Windows`,
+/// but `\\?\C:\COM` will be left as-is (due to a reserved filename).
+///
+/// Use this to pass arbitrary paths to programs that may not be UNC-aware.
+/// It's generally safe to pass UNC paths to legacy programs, because
+/// the paths contain a reserved character, so will gracefully fail
+/// if used with wrong APIs.
+///
+/// This function does not perform any I/O.
+///
+/// Currently paths with unpaired surrogates aren't converted even if they
+/// can be due to limitations of Rust's `OsStr` API.
+#[inline]
+pub fn simplified(path: &Path) -> &Path {
+    if is_safe_to_strip_unc(path) {
+        // unfortunately we can't safely strip prefix from a non-Unicode path
+        path.to_str().and_then(|s| s.get(4..)).map(Path::new).unwrap_or(path)
+    } else {
+        path
+    }
+}
+
+/// Like `std::fs::canonicalize()`, but on Windows it outputs the most
+/// compatible form of a path instead of UNC.
+#[inline(always)]
+pub fn canonicalize<P: AsRef<Path>>(path: P) -> io::Result<PathBuf> {
+    let path = path.as_ref();
+
+    #[cfg(not(windows))]
+    {
+        fs::canonicalize(path)
+    }
+    #[cfg(windows)]
+    {
+        canonicalize_win(path)
+    }
+}
+
+#[cfg(windows)]
+fn canonicalize_win(path: &Path) -> io::Result<PathBuf> {
+    let real_path = fs::canonicalize(path)?;
+    Ok(if is_safe_to_strip_unc(&real_path) {
+        real_path.to_str().and_then(|s| s.get(4..)).map(PathBuf::from).unwrap_or(real_path)
+    } else {
+        real_path
+    })
+}
+
+pub use self::canonicalize as realpath;
+
+#[cfg(any(windows,test))]
+fn windows_char_len(s: &OsStr) -> usize {
+    #[cfg(not(windows))]
+    let len = s.to_string_lossy().chars().map(|c| if c as u32 <= 0xFFFF {1} else {2}).sum();
+    #[cfg(windows)]
+    let len = s.encode_wide().count();
+    len
+}
+
+#[cfg(any(windows,test))]
+fn is_valid_filename(file_name: &OsStr) -> bool {
+    let file_name = file_name.as_ref();
+    if windows_char_len(file_name) > 255 {
+        return false;
+    }
+
+    // Non-unicode is safe, but Rust can't reasonably losslessly operate on such strings
+    let file_name = if let Some(s) = file_name.to_str() {
+        s
+    } else {
+        return false;
+    };
+    if file_name.is_empty() {
+        return false;
+    }
+    // Only ASCII subset is checked, and UTF-8 is safe for that
+    let byte_str = file_name.as_bytes();
+    for &c in byte_str {
+        match c {
+            0..=31 |
+            b'<' | b'>' | b':' | b'"' |
+            b'/' | b'\\' | b'|' | b'?' | b'*' => return false,
+            _ => {},
+        }
+    }
+
+    // Filename can't end with . or space (except before extension, but this checks the whole name)
+    let last_char = byte_str[byte_str.len()-1];
+    if last_char == b' ' || last_char == b'.' {
+        return false;
+    }
+    true
+}
+
+#[cfg(any(windows, test))]
+const RESERVED_NAMES: [&'static str; 22] = [
+    "AUX", "NUL", "PRN", "CON", "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8",
+    "COM9", "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9",
+];
+
+#[cfg(any(windows, test))]
+fn is_reserved<P: AsRef<OsStr>>(file_name: P) -> bool {
+    // con.txt is reserved too
+    if let Some(stem) = Path::new(&file_name).file_stem() {
+        // all reserved DOS names have ASCII-compatible stem
+        if let Some(name) = stem.to_str() {
+            // "con.. .txt" is "CON" for DOS
+            let trimmed = right_trim(name);
+            if trimmed.len() <= 4 {
+                for name in &RESERVED_NAMES {
+                    if name.eq_ignore_ascii_case(trimmed) {
+                        return true;
+                    }
+                }
+            }
+        }
+    }
+    false
+}
+
+#[cfg(not(windows))]
+#[inline]
+fn is_safe_to_strip_unc(_path: &Path) -> bool {
+    false
+}
+
+#[cfg(windows)]
+fn is_safe_to_strip_unc(path: &Path) -> bool {
+    let mut components = path.components();
+    match components.next() {
+        Some(Component::Prefix(p)) => match p.kind() {
+            Prefix::VerbatimDisk(..) => {},
+            _ => return false, // Other kinds of UNC paths
+        },
+        _ => return false, // relative or empty
+    }
+
+    for component in components {
+        match component {
+            Component::RootDir => {},
+            Component::Normal(file_name) => {
+                // it doesn't allocate in most cases,
+                // and checks are interested only in the ASCII subset, so lossy is fine
+                if !is_valid_filename(file_name) || is_reserved(file_name) {
+                    return false;
+                }
+            }
+            _ => return false, // UNC paths take things like ".." literally
+        };
+    }
+
+    if windows_char_len(path.as_os_str()) > 260 { // However, if the path is going to be used as a directory it's 248
+        return false;
+    }
+    true
+}
+
+/// Trim '.' and ' '
+#[cfg(any(windows, test))]
+fn right_trim(mut s: &str) -> &str {
+    while s.len() > 0 {
+        let last = s.len()-1;
+        unsafe {
+            if s.as_bytes()[last] == b'.' || s.as_bytes()[last] == b' ' {
+                s = s.get_unchecked(0..last) // trim of ASCII byte can't break UTF-8
+            } else {
+                break;
+            }
+        }
+    }
+    s
+}
+
+#[test]
+fn trim_test() {
+    assert_eq!("a", right_trim("a."));
+    assert_eq!("ą", right_trim("ą."));
+    assert_eq!("a", right_trim("a "));
+    assert_eq!("ąą", right_trim("ąą "));
+    assert_eq!("a", right_trim("a. . . ....   "));
+    assert_eq!("a. . . ..ź", right_trim("a. . . ..ź..   "));
+    assert_eq!(" b", right_trim(" b"));
+    assert_eq!(" べ", right_trim(" べ"));
+    assert_eq!("c. c", right_trim("c. c."));
+    assert_eq!("。", right_trim("。"));
+    assert_eq!("", right_trim(""));
+}
+
+#[test]
+fn reserved() {
+    assert!(is_reserved("CON"));
+    assert!(is_reserved("con"));
+    assert!(is_reserved("con.con"));
+    assert!(is_reserved("COM4"));
+    assert!(is_reserved("COM4.txt"));
+    assert!(is_reserved("COM4 .txt"));
+    assert!(is_reserved("con."));
+    assert!(is_reserved("con ."));
+    assert!(is_reserved("con  "));
+    assert!(is_reserved("con . "));
+    assert!(is_reserved("con . .txt"));
+    assert!(is_reserved("con.....txt"));
+    assert!(is_reserved("PrN....."));
+
+    assert!(!is_reserved(" PrN....."));
+    assert!(!is_reserved(" CON"));
+    assert!(!is_reserved("COM0"));
+    assert!(!is_reserved("COM77"));
+    assert!(!is_reserved(" CON "));
+    assert!(!is_reserved(".CON"));
+    assert!(!is_reserved("@CON"));
+    assert!(!is_reserved("not.CON"));
+    assert!(!is_reserved("CON。"));
+}
+
+#[test]
+fn len() {
+    assert_eq!(1, windows_char_len(OsStr::new("a")));
+    assert_eq!(1, windows_char_len(OsStr::new("€")));
+    assert_eq!(1, windows_char_len(OsStr::new("本")));
+    assert_eq!(2, windows_char_len(OsStr::new("🧐")));
+    assert_eq!(2, windows_char_len(OsStr::new("®®")));
+}
+
+#[test]
+fn valid() {
+    assert!(!is_valid_filename("..".as_ref()));
+    assert!(!is_valid_filename(".".as_ref()));
+    assert!(!is_valid_filename("aaaaaaaaaa:".as_ref()));
+    assert!(!is_valid_filename("ą:ą".as_ref()));
+    assert!(!is_valid_filename("".as_ref()));
+    assert!(!is_valid_filename("a ".as_ref()));
+    assert!(!is_valid_filename(" a. ".as_ref()));
+    assert!(!is_valid_filename("a/".as_ref()));
+    assert!(!is_valid_filename("/a".as_ref()));
+    assert!(!is_valid_filename("/".as_ref()));
+    assert!(!is_valid_filename("\\".as_ref()));
+    assert!(!is_valid_filename("\\a".as_ref()));
+    assert!(!is_valid_filename("<x>".as_ref()));
+    assert!(!is_valid_filename("a*".as_ref()));
+    assert!(!is_valid_filename("?x".as_ref()));
+    assert!(!is_valid_filename("a\0a".as_ref()));
+    assert!(!is_valid_filename("\x1f".as_ref()));
+    assert!(!is_valid_filename(::std::iter::repeat("a").take(257).collect::<String>().as_ref()));
+
+    assert!(is_valid_filename(::std::iter::repeat("®").take(254).collect::<String>().as_ref()));
+    assert!(is_valid_filename("ファイル".as_ref()));
+    assert!(is_valid_filename("a".as_ref()));
+    assert!(is_valid_filename("a.aaaaaaaa".as_ref()));
+    assert!(is_valid_filename("a........a".as_ref()));
+    assert!(is_valid_filename("       b".as_ref()));
+}
+
+#[test]
+#[cfg(windows)]
+fn realpath_test() {
+    assert_eq!(r"C:\WINDOWS", canonicalize(r"C:\Windows").unwrap().to_str().unwrap().to_uppercase());
+    assert_ne!(r".", canonicalize(r".").unwrap().to_str().unwrap());
+}
+
+#[test]
+#[cfg(windows)]
+fn strip() {
+    assert_eq!(Path::new(r"C:\foo\😀"), simplified(Path::new(r"\\?\C:\foo\😀")));
+    assert_eq!(Path::new(r"\\?\serv\"), simplified(Path::new(r"\\?\serv\")));
+    assert_eq!(Path::new(r"\\.\C:\notdisk"), simplified(Path::new(r"\\.\C:\notdisk")));
+    assert_eq!(Path::new(r"\\?\GLOBALROOT\Device\ImDisk0\path\to\file.txt"), simplified(Path::new(r"\\?\GLOBALROOT\Device\ImDisk0\path\to\file.txt")));
+}
+
+#[test]
+#[cfg(windows)]
+fn safe() {
+    assert!(is_safe_to_strip_unc(Path::new(r"\\?\C:\foo\bar")));
+    assert!(is_safe_to_strip_unc(Path::new(r"\\?\Z:\foo\bar\")));
+    assert!(is_safe_to_strip_unc(Path::new(r"\\?\Z:\😀\🎃\")));
+    assert!(is_safe_to_strip_unc(Path::new(r"\\?\c:\foo")));
+
+    let long = ::std::iter::repeat("®").take(160).collect::<String>();
+    assert!(is_safe_to_strip_unc(Path::new(&format!(r"\\?\c:\{}", long))));
+    assert!(!is_safe_to_strip_unc(Path::new(&format!(r"\\?\c:\{}\{}", long, long))));
+
+    assert!(!is_safe_to_strip_unc(Path::new(r"\\?\C:\foo\.\bar")));
+    assert!(!is_safe_to_strip_unc(Path::new(r"\\?\C:\foo\..\bar")));
+    assert!(!is_safe_to_strip_unc(Path::new(r"\\?\c\foo")));
+    assert!(!is_safe_to_strip_unc(Path::new(r"\\?\c\foo/bar")));
+    assert!(!is_safe_to_strip_unc(Path::new(r"\\?\c:foo")));
+    assert!(!is_safe_to_strip_unc(Path::new(r"\\?\cc:foo")));
+    assert!(!is_safe_to_strip_unc(Path::new(r"\\?\c:foo\bar")));
+}