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tsweb: normalize passkey identities in bucketed stats

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Signed-off-by: Tom DNetto <tom@tailscale.com>
Updates: corp#17075
This commit is contained in:
Tom DNetto 2024-02-07 15:37:23 -08:00 committed by Tom
parent 8d6d9d28ba
commit 653721541c
2 changed files with 5 additions and 3 deletions
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7
tsweb/tsweb.go
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@ -196,8 +196,8 @@ type BucketedStatsOptions struct {
// normalizePathRegex matches components in a HTTP request path
// that should be replaced.
//
// See: https://regex101.com/r/WIfpaR/1 for the explainer and test cases.
var normalizePathRegex = regexp.MustCompile("([a-fA-F0-9]{9,}|([^\\/])+\\.([^\\/]){2,}|((n|k|u|L|t|S)[a-zA-Z0-9]{5,}(CNTRL|Djz1H|LV5CY|mxgaY|jNy1b)))")
// See: https://regex101.com/r/WIfpaR/3 for the explainer and test cases.
var normalizePathRegex = regexp.MustCompile("([a-fA-F0-9]{9,}|([^\\/])+\\.([^\\/]){2,}|((n|k|u|L|t|S)[a-zA-Z0-9]{5,}(CNTRL|Djz1H|LV5CY|mxgaY|jNy1b))|(([^\\/])+\\@passkey))")
// NormalizedPath returns the given path with the following modifications:
//
@ -206,7 +206,8 @@ type BucketedStatsOptions struct {
// replaced by an ellipsis
// - any path component containing a period with at least two characters
// after the period (i.e. an email or domain)
// - any path component consisting of a common Tailscale Stable ID.
// - any path component consisting of a common Tailscale Stable ID
// - any path segment *@passkey.
func NormalizedPath(p string) string {
// Fastpath: No hex sequences in there we might have to trim.
// Avoids allocating.

1
tsweb/tsweb_test.go
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@ -686,6 +686,7 @@ func TestBucket(t *testing.T) {
{"/a/831a4bf39856?refreshed=true", "/a/…"},
{"/c2n/nxaaa1CNTRL", "/c2n/…"},
{"/api/v2/tailnet/blueberries.com/keys/kxaDK21CNTRL", "/api/v2/tailnet/…/keys/…"},
{"/api/v2/tailnet/bloop@passkey/devices", "/api/v2/tailnet/…/devices"},
}
for _, tc := range tcs {