Applied-Software/ghostty
5
0
Fork 0
mirror of https://github.com/ghostty-org/ghostty.git synced 2025-07-19 18:26:13 +03:00
Code Issues Packages Projects Releases Wiki Activity

look up default shell in user passwd entry

Browse Source
This commit is contained in:
Mitchell Hashimoto
2022-11-01 14:02:10 -07:00
parent 4d13f2648a
commit 7da18d8063
1 changed files with 41 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
src/config.zig
View File

@ -1,8 +1,18 @@
const std = @import("std");
const builtin = @import("builtin");
const Allocator = std.mem.Allocator;
const ArenaAllocator = std.heap.ArenaAllocator;
const inputpkg = @import("input.zig");
const log = std.log.scoped(.config);
/// Used to determine the default shell and directory on Unixes.
const c = @cImport({
@cInclude("sys/types.h");
@cInclude("unistd.h");
@cInclude("pwd.h");
});
/// Config is the main config struct. These fields map directly to the
/// CLI flag names hence we use a lot of `@""` syntax to support hyphens.
pub const Config = struct {
@ -23,7 +33,7 @@ pub const Config = struct {
/// The command to run, usually a shell. If this is not an absolute path,
/// it'll be looked up in the PATH.
command: ?[]const u8,
command: ?[]const u8 = null,
/// Key bindings. The format is "trigger=action". Duplicate triggers
/// will overwrite previously set values.
@ -71,7 +81,6 @@ pub const Config = struct {
// Build up our basic config
var result: Config = .{
._arena = ArenaAllocator.init(alloc_gpa),
.command = "sh",
};
errdefer result.deinit();
const alloc = result._arena.?.allocator();
@ -145,6 +154,36 @@ pub const Config = struct {
}
}
}
// If we are missing either a command or home directory, we need
// to look up defaults which is kind of expensive.
if (self.command == null) command: {
var buf: [1024]u8 = undefined;
var pw: c.struct_passwd = undefined;
var pw_ptr: ?*c.struct_passwd = null;
const res = c.getpwuid_r(c.getuid(), &pw, &buf, buf.len, &pw_ptr);
if (res != 0) {
log.warn("error retrieving pw entry code={d}", .{res});
break :command;
}
if (pw_ptr == null) {
// Future: let's check if a better shell is available like zsh
log.warn("no pw entry to detect default shell, will default to 'sh'", .{});
self.command = "sh";
break :command;
}
if (pw.pw_shell) |ptr| {
const source = std.mem.sliceTo(ptr, 0);
const alloc = self._arena.?.allocator();
const sh = try alloc.alloc(u8, source.len);
std.mem.copy(u8, sh, source);
log.debug("default shell={s}", .{sh});
self.command = sh;
}
}
}
};