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ipn/ipnlocal/peerapi: add endpoint to list local interfaces

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Signed-off-by: Maisem Ali <maisem@tailscale.com>
This commit is contained in:
Maisem Ali 2022-04-26 15:25:48 -07:00 committed by Maisem Ali
parent 1aa75b1c9e
commit 637cc1b5fc
1 changed files with 37 additions and 0 deletions
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37
ipn/ipnlocal/peerapi.go
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@ -567,6 +567,9 @@ func (h *peerAPIHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
case "/v0/wol":
h.handleWakeOnLAN(w, r)
return
case "/v0/interfaces":
h.handleServeInterfaces(w, r)
return
}
who := h.peerUser.DisplayName
fmt.Fprintf(w, `<html>
@ -581,6 +584,40 @@ func (h *peerAPIHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
}
}
func (h *peerAPIHandler) handleServeInterfaces(w http.ResponseWriter, r *http.Request) {
if !h.canDebug() {
http.Error(w, "denied; no debug access", http.StatusForbidden)
return
}
i, err := interfaces.GetList()
if err != nil {
http.Error(w, err.Error(), 500)
}
dr, err := interfaces.DefaultRoute()
if err != nil {
http.Error(w, err.Error(), 500)
}
w.Header().Set("Content-Type", "text/html; charset=utf-8")
fmt.Fprintln(w, "<h1>Interfaces</h1>")
fmt.Fprintf(w, "<h3>Default route is %q(%d)</h3>\n", dr.InterfaceName, dr.InterfaceIndex)
fmt.Fprintln(w, "<table>")
fmt.Fprint(w, "<tr>")
for _, v := range []any{"Index", "Name", "MTU", "Flags", "Addrs"} {
fmt.Fprintf(w, "<th>%v</th> ", v)
}
fmt.Fprint(w, "</tr>\n")
i.ForeachInterface(func(iface interfaces.Interface, ipps []netaddr.IPPrefix) {
fmt.Fprint(w, "<tr>")
for _, v := range []any{iface.Index, iface.Name, iface.MTU, iface.Flags, ipps} {
fmt.Fprintf(w, "<td>%v</td> ", v)
}
fmt.Fprint(w, "</tr>\n")
})
fmt.Fprintln(w, "</table>")
}
type incomingFile struct {
name string // "foo.jpg"
started time.Time