Commit e1bf350b4d66a682c8fc5f151563dd1725e8eaf1 | zig

author	Kirjastonhoitaja <thekirjastonhoitaja@protonmail.com> 2021-09-15 09:51:43+02:00
committer	Isaac Freund <mail@isaacfreund.com> 2021-09-16 11:35:12+02:00
log	e1bf350b4d66a682c8fc5f151563dd1725e8eaf1
tree	3f5862ce05476513a87c24708bf08631d5587d8d
parent	d5c1d24964b0ee8ad37beb8e2a907e8caa645e07

net.Address: Fix writing 0-bytes when formatting Unix addresses

The entire 'path' array would get written to the formatting function,
when it should instead be treated as a regular zero-terminated string.

Note that this doesn't handle abstract paths on Linux, those paths
*start* with a \0 byte and are hence treated as empty strings instead.
But fixing that would require more adjustments than just formatting, in
particular to getOsSockLen().

2 files changed, 14 insertions(+), 1 deletions(-)

lib
- std
  - net.zig
  - net
    test.zig

lib/std/net.zig+1-1

...	...	@@ -157,7 +157,7 @@ pub const Address = extern union {
157	157	unreachable;
158	158	}
159	159
160		try std.fmt.format(out_stream, "{s}", .{&self.un.path});
	160	try std.fmt.format(out_stream, "{s}", .{std.mem.sliceTo(&self.un.path, 0)});
161	161	},
162	162	else => unreachable,
163	163	}

lib/std/net/test.zig+13

...	...	@@ -90,6 +90,19 @@ test "parse and render IPv4 addresses" {
90	90	try testing.expectError(error.NonCanonical, net.Address.parseIp4("127.01.0.1", 0));
91	91	}
92	92
	93	test "parse and render UNIX addresses" {
	94	if (builtin.os.tag == .wasi) return error.SkipZigTest;
	95	if (!net.has_unix_sockets) return error.SkipZigTest;
	96
	97	var buffer: [14]u8 = undefined;
	98	const addr = net.Address.initUnix("/tmp/testpath") catch unreachable;
	99	const fmt_addr = std.fmt.bufPrint(buffer[0..], "{}", .{addr}) catch unreachable;
	100	try std.testing.expectEqualSlices(u8, "/tmp/testpath", fmt_addr);
	101
	102	const too_long = [_]u8{'a'} ** (addr.un.path.len + 1);
	103	try testing.expectError(error.NameTooLong, net.Address.initUnix(too_long[0..]));
	104	}
	105
93	106	test "resolve DNS" {
94	107	if (builtin.os.tag == .wasi) return error.SkipZigTest;
95	108