bsncubed
23dcfb393f
Implements the design in claude.md as a building skeleton: pure Go, no cgo, cross-compiles to a single Windows .exe from Linux. Architecture follows the spec's deliberate split. The fast path is native — tray icon, grouped submenus, a Win32 MessageBox showing a live before/after diff, then netsh. The slow path is an embedded web editor served on a random loopback port and opened in the default browser. Two decisions worth recording: Reads use GetAdaptersAddresses, writes use netsh. The spec left the enumeration mechanism open; parsing `netsh show config` breaks on a non-English Windows because the output is localised. DNS static-vs-DHCP origin is not exposed by that API, so it comes from one registry read. The netsh command plan is built in portable code. That puts the delete-every- existing-address step — the one that stops secondary addresses leaking across switches — under test without needing a Windows box. The editor requires the session token in a header for mutations, not just the cookie: any page in the browser can make it POST to 127.0.0.1 with the cookie attached, but it cannot set a header. The updater refuses to install a release that publishes no SHA256. Not yet done: no group picker for export (the API supports it), no single-instance guard, and internal/server/web/app.css is reconstructed from the description in claude.md rather than the canonical apointless.css. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
//go:build windows
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// Package dialog wraps the handful of Win32 message boxes ipswap needs.
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//
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// This is raw user32 rather than a GUI toolkit on purpose: the fast path must
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// stay native and dependency-free, and a confirmation prompt is the only
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// blocking UI the tray side has.
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package dialog
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import (
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"syscall"
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"unsafe"
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)
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var (
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user32 = syscall.NewLazyDLL("user32.dll")
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messageBoxW = user32.NewProc("MessageBoxW")
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)
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// MessageBoxW uType flags.
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const (
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mbOK = 0x00000000
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mbOKCancel = 0x00000001
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mbYesNo = 0x00000004
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mbIconError = 0x00000010
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mbIconQuestion = 0x00000020
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mbIconWarning = 0x00000030
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mbIconInformation = 0x00000040
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// The tray has no window to own the dialog, so without TOPMOST the box can
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// open behind whatever is focused and look like a hang.
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mbSetForeground = 0x00010000
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mbTopMost = 0x00040000
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)
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// MessageBoxW return values.
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const (
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idOK = 1
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idYes = 6
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)
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func show(title, text string, flags uint32) int {
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t, err := syscall.UTF16PtrFromString(text)
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if err != nil {
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return 0
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}
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c, err := syscall.UTF16PtrFromString(title)
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if err != nil {
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return 0
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}
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ret, _, _ := messageBoxW.Call(
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0,
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uintptr(unsafe.Pointer(t)),
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uintptr(unsafe.Pointer(c)),
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uintptr(flags|mbSetForeground|mbTopMost),
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)
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return int(ret)
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}
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// Confirm asks a yes/no question and reports whether the user said yes.
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func Confirm(title, text string) bool {
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return show(title, text, mbYesNo|mbIconQuestion) == idYes
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}
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// Info shows a plain acknowledgement box.
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func Info(title, text string) {
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show(title, text, mbOK|mbIconInformation)
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}
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// Error shows a failure. The caller is expected to include the raw netsh
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// output — that text is the only diagnostic the user has on site.
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func Error(title, text string) {
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show(title, text, mbOK|mbIconError)
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}
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// ErrorWithRetryAsAdmin reports a failure and offers to relaunch elevated.
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// It reports whether the user accepted.
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func ErrorWithRetryAsAdmin(title, text string) bool {
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return show(title, text+"\n\nRelaunch ipswap as administrator and try again?",
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mbOKCancel|mbIconWarning) == idOK
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}
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