From 96e4d568195602afde3486c2d9de890a383a1c4b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Igor=20Anic=CC=81?= <igor.anic@gmail.com>
Date: Sun, 25 Feb 2024 10:35:18 +0100
Subject: [PATCH] std.tar add case sensitive file name test

Like in issue #18089, this tar contains, same file name in two case
sensitive name version. Unpack should fail on case insensitive file
systems and succeed on case sensitive.

$ tar tvf 18089.tar
    18089/
    18089/alacritty/
    18089/alacritty/darkermatrix.yml
    18089/alacritty/Darkermatrix.yml
---
 lib/std/tar/test.zig           |  26 ++++++++++++++++++++++++++
 lib/std/tar/testdata/18089.tar | Bin 0 -> 10240 bytes
 2 files changed, 26 insertions(+)
 create mode 100644 lib/std/tar/testdata/18089.tar

diff --git a/lib/std/tar/test.zig b/lib/std/tar/test.zig
index a1d6acfc4b..912d0c3542 100644
--- a/lib/std/tar/test.zig
+++ b/lib/std/tar/test.zig
@@ -426,3 +426,29 @@ test "tar should not overwrite existing file" {
     try tar.pipeToFileSystem(root2.dir, fsb.reader(), .{ .mode_mode = .ignore, .strip_components = 0 });
 }
 
+test "tar case sensitivity" {
+    // Mimicking issue #18089, this tar contains, same file name in two case
+    // sensitive name version. Should fail on case insensitive file systems.
+    //
+    // $ tar tvf 18089.tar
+    //     18089/
+    //     18089/alacritty/
+    //     18089/alacritty/darkermatrix.yml
+    //     18089/alacritty/Darkermatrix.yml
+    //
+    const data = @embedFile("testdata/18089.tar");
+    var fsb = std.io.fixedBufferStream(data);
+
+    var root = std.testing.tmpDir(.{});
+    defer root.cleanup();
+
+    tar.pipeToFileSystem(root.dir, fsb.reader(), .{ .mode_mode = .ignore, .strip_components = 1 }) catch |err| {
+        // on case insensitive fs we fail on overwrite existing file
+        try testing.expectEqual(error.PathAlreadyExists, err);
+        return;
+    };
+
+    // on case sensitive os both files are created
+    try testing.expect((try root.dir.statFile("alacritty/darkermatrix.yml")).kind == .file);
+    try testing.expect((try root.dir.statFile("alacritty/Darkermatrix.yml")).kind == .file);
+}
diff --git a/lib/std/tar/testdata/18089.tar b/lib/std/tar/testdata/18089.tar
new file mode 100644
index 0000000000000000000000000000000000000000..c58b3eaea209b7a2e6b530f86d080bff3c68b89e
GIT binary patch
literal 10240
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zmgEY-TwXMoJg%ix%4uWXdr`0IM8zby$_BmFb@Ri%i>azy8+YyE#eseO7oYxfOE3Ay
zO<bh5>rR7ALJ9co{3mtJzc%sY|BbnM&VL!xdX=`ZOYL!V+HO8^hmybd&Evbj{Rc{`
z)cyTm^0%OktK<`h_wB*^&;S4X`=9?h|2of!nl~f=zR{(R00IagfB*srAb<b@2q1s}
c0tg_000IagfB*srAb<b@2q1s}0tgg=Gkv^YN&o-=

literal 0
HcmV?d00001