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ipn/ipnlocal: add peerapi goroutine fetch

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Between owners.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2021-04-22 13:01:42 -07:00 committed by Brad Fitzpatrick
parent 5835a3f553
commit 86e85d8934
2 changed files with 36 additions and 1 deletions
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20
ipn/ipnlocal/peerapi.go
View File

@ -401,6 +401,10 @@ func (h *peerAPIHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
h.handlePeerPut(w, r) h.handlePeerPut(w, r)
return return
} }
if r.URL.Path == "/v0/goroutines" {
h.handleServeGoroutines(w, r)
return
}
who := h.peerUser.DisplayName who := h.peerUser.DisplayName
fmt.Fprintf(w, `<html> fmt.Fprintf(w, `<html>
<meta name="viewport" content="width=device-width, initial-scale=1"> <meta name="viewport" content="width=device-width, initial-scale=1">
@ -582,3 +586,19 @@ func approxSize(n int64) string {
} }
return fmt.Sprintf("~%dMB", n>>20) return fmt.Sprintf("~%dMB", n>>20)
} }
func (h *peerAPIHandler) handleServeGoroutines(w http.ResponseWriter, r *http.Request) {
if !h.isSelf {
http.Error(w, "not owner", http.StatusForbidden)
return
}
var buf []byte
for size := 4 << 10; size <= 2<<20; size *= 2 {
buf = make([]byte, size)
buf = buf[:runtime.Stack(buf, true)]
if len(buf) < size {
break
}
}
w.Write(buf)
}

17
ipn/ipnlocal/peerapi_test.go
View File

@ -103,7 +103,7 @@ func hexAll(v string) string {
return sb.String() return sb.String()
} }
func TestHandlePeerPut(t *testing.T) { func TestHandlePeerAPI(t *testing.T) {
tests := []struct { tests := []struct {
name string name string
isSelf bool // the peer sending the request is owned by us isSelf bool // the peer sending the request is owned by us
@ -134,6 +134,21 @@ func TestHandlePeerPut(t *testing.T) {
bodyNotContains("You are the owner of this node."), bodyNotContains("You are the owner of this node."),
), ),
}, },
{
name: "peer_api_goroutines_deny",
isSelf: false,
req: httptest.NewRequest("GET", "/v0/goroutines", nil),
checks: checks(httpStatus(403)),
},
{
name: "peer_api_goroutines",
isSelf: true,
req: httptest.NewRequest("GET", "/v0/goroutines", nil),
checks: checks(
httpStatus(200),
bodyContains("ServeHTTP"),
),
},
{ {
name: "reject_non_owner_put", name: "reject_non_owner_put",
isSelf: false, isSelf: false,