Author SHA1 Message Date
sneak 03b19c48e9 Key the TRUSTED_PROXIES rule to the source address seen on arrival
check / check (push) Waiting to run
The README and the TrustedProxies comment now say, once per passage,
that the list must be set to the proxy's address alone if any client
can reach webhooker or the proxy from an RFC 1918 source address,
directly or through anything that can rewrite source addresses, and
that the address to set is the remoteIP field of the http request log
line. The loopback case in the reverse-proxy checklist is now a proxy
reaching the binary bound to 127.0.0.1. Other sentences about which
clients can choose their own rate-limit key are cut.

Model: opus-5-5
2026-10-01 21:19:34 +00:00
sneak 98f719ded3 Name every rate limit that shares the client key
"Trusted proxies" now says a block covering clients makes every rate
limit bypassable, not "all three"; Rate Limiting lists delivery replay
and event resubmit among the limiters sharing the key. The
Configuration table and the TrustedProxies comment say a private
client behind a trusted proxy chooses its key, not behind any proxy.

Model: opus-5-5
2026-10-01 21:13:28 +00:00
sneak 0da5f26bdf Say the proxy is covered by default or by a set value
The rate-limit test comments on trustedProxyCIDR and forwardedKeyFor
said production needs TRUSTED_PROXIES set; another said only
operator-listed addresses are trusted. The README's Rate Limiting
paragraph said "listed in", and the login endpoint section assumed
every proxied deployment shares one bucket. All now match the
RFC 1918 default.

Model: opus-5-5
2026-10-01 21:13:28 +00:00
clawbot a9f7448ff6 Point to the proxy's access log for a login flood's source
No log line records the client address taken from X-Forwarded-For,
so the login endpoint section no longer says the source shows in the
failure logs; it names the proxy's access log instead.

Model: opus-5-5
2026-10-01 21:13:28 +00:00
clawbot 999654f8f6 Say that any private-addressed client can choose its rate-limit key
Under the default, a client with a private address picks its own
rate-limit key through X-Forwarded-For whether it connects directly or
through the proxy, so the README and the TrustedProxies comment now
tell an operator with any such clients to set the list to the proxy
alone. The login endpoint section no longer assumes the proxy is
uncovered by default.

Model: opus-5-5
2026-10-01 21:13:28 +00:00
clawbot e1a11933f0 Trust the RFC 1918 ranges as proxies when TRUSTED_PROXIES is unset (closes #333)
Unset or empty, TRUSTED_PROXIES now defaults to 10.0.0.0/8,
172.16.0.0/12 and 192.168.0.0/16, so a reverse proxy reaching the app
over a Docker network or a private LAN gets per-client rate-limit
buckets without configuration. A set value replaces the default; an
unparseable one still fails startup.

The startup warning for an empty list goes, with its test hook and
test, since the default is no longer empty. The README's
configuration table, Trusted proxies, upaas and reverse-proxy sections
describe the new default and when to narrow it to the proxy alone.

Model: opus-5-5
2026-10-01 21:13:28 +00:00
24 changed files with 174 additions and 1157 deletions
+74 -81
View File
@@ -142,7 +142,7 @@ TTY detection, and security headers are always applied.
| `RETENTION_SWEEP_INTERVAL` | How often the retention reaper and archive sweeper run (Go duration, must be positive) | `1h` |
| `SESSION_IDLE_TIMEOUT` | Idle session timeout (Go duration) | `24h` |
| `RECEIVER_RATE_LIMIT` | Receiver requests/minute per IP per entrypoint (10x that per IP across the route) | `120` |
| `TRUSTED_PROXIES` | CIDRs whose forwarded headers are trusted (unset: all clients behind a proxy share one rate-limit bucket; a correct login password is never throttled either way) | `""` (none) |
| `TRUSTED_PROXIES` | CIDRs whose forwarded headers are trusted. A set value replaces the default. If any client can reach webhooker, or the proxy in front of it, from an RFC 1918 source address, set it to the proxy's address alone. See [Trusted proxies](#trusted-proxies) | `10.0.0.0/8,172.16.0.0/12,192.168.0.0/16` (RFC 1918) |
| `ALLOWED_EGRESS_CIDRS` | CIDRs that delivery targets may reach despite the SSRF blocklist. Read [Allowing egress to your own network](#allowing-egress-to-your-own-network) before setting it | `""` (none) |
#### Allowing egress to your own network
@@ -374,41 +374,37 @@ unlocked.
`TRUSTED_PROXIES` is a comma-separated list of CIDR blocks (a bare
address such as `192.168.1.7` is accepted and treated as a single
host), for example `192.168.1.7, 2001:db8::5`. It decides whose
`X-Forwarded-For` header the rate limiters believe, so it should name
the addresses of your reverse proxies and nothing else.
`X-Forwarded-For` header the rate limiters believe, so it should cover
the addresses of your reverse proxies.
`X-Forwarded-For` is honoured **only** when the connecting peer is
inside one of these blocks; for every other peer the client identity is
the connection's own address and the header is ignored. The default is
the empty list, which trusts nobody — anything else would let any
client pick its own rate limit bucket, minting a fresh one per request
or draining someone else's. Set it to the address of your reverse
proxy, and to nothing wider. A set but unparseable value aborts
startup.
the connection's own address and the header is ignored. Unset (or
empty), the list is the RFC 1918 private ranges: `10.0.0.0/8`,
`172.16.0.0/12` and `192.168.0.0/16`. A set value replaces the default
entirely. A set but unparseable value aborts startup.
That default is safe against forged headers, but leaving it unset in
production has a cost you must know about. Production runs behind a
TLS-terminating reverse proxy, so with `TRUSTED_PROXIES` unset every
request keys on the proxy's own address and all clients share a single
bucket per limit. The receiver limits become service-wide ceilings,
and the login endpoint's failure counting collapses onto one key, so a
stranger's wrong passwords throttle every other client's wrong
passwords.
If any client can reach webhooker, or the proxy in front of it, from an
RFC 1918 source address (directly, or through anything that can
rewrite source addresses, such as NAT or a published container port),
set `TRUSTED_PROXIES` to the proxy's address alone, or every rate
limit, the webhook receiver's included, can be bypassed by those
clients. The address to set is the `remoteIP` field of the
`http request` log line for a request that came through the proxy.
Behind a proxy the list does not cover, every request keys on the
proxy's own address and all clients share a single bucket per limit.
The receiver limits become service-wide ceilings, and the login
endpoint's failure counting collapses onto one key, so a stranger's
wrong passwords throttle every other client's wrong passwords. Set
`TRUSTED_PROXIES` to that proxy's address to restore per-client
buckets.
What it cannot do is lock the operator out. The login endpoint
verifies credentials **before** it consults any limit and charges only
failures, so a correct password is never throttled no matter how full
the bucket is. See [Rate Limiting](#rate-limiting).
The remedy is to set `TRUSTED_PROXIES` to your reverse proxy's
address, which restores per-client buckets. webhooker logs a warning
at startup whenever `TRUSTED_PROXIES` is empty, in every environment,
because behind a proxy every client shares one bucket in `dev` and
`prod` alike. The warning is informational when nothing proxies to the
process: with no proxy in front, the peer address is the client's own
and the buckets are already per-client. See
[Rate Limiting](#rate-limiting) for what each limit shares.
`X-Real-IP` and `True-Client-IP` are **never** read, from any peer.
Reverse proxies append to `X-Forwarded-For` but forward other client
headers verbatim, so a single-valued header is client-controlled even
@@ -424,20 +420,10 @@ instead, since past such an entry the chain is not the shape assumed
here. The peer address is likewise used when the header is absent or
every hop in it is a trusted proxy.
Two operator requirements follow:
- Your proxy must **append** the peer address to `X-Forwarded-For`
(nginx `$proxy_add_x_forwarded_for`, HAProxy `option forwardfor`,
Caddy and AWS ALB by default), and must append a bare address with
no port.
- List proxy hosts **only**. Any address inside `TRUSTED_PROXIES`
chooses its own rate-limit key: its `X-Forwarded-For` is walked, so
it can name a different address on every request to get a fresh
bucket each time, or name another client's address to drain that
client's bucket. Never list a block that also covers clients — a
broad `10.0.0.0/8` on a network where clients live in the same range
makes all three limits, including the unauthenticated webhook
receiver, silently bypassable by every client in the block.
Your proxy must therefore **append** the peer address to
`X-Forwarded-For` (nginx `$proxy_add_x_forwarded_for`, HAProxy
`option forwardfor`, Caddy and AWS ALB by default), and must append a
bare address with no port.
#### Sessions
@@ -736,10 +722,15 @@ repository's `Dockerfile` and runs it. The app needs:
- **Volume:** one host directory mounted at `/var/lib/webhooker`.
- **Environment variables:**
- `WEBHOOKER_ENVIRONMENT=prod`
- `TRUSTED_PROXIES`: your reverse proxy's address on that Docker
network. The `remoteIP` field of the `http request` log line for a
request that came through the proxy shows it; the health check's
own lines show `::1`. See [Trusted proxies](#trusted-proxies).
- `TRUSTED_PROXIES`: unset, it is the RFC 1918 ranges. Set it to
your reverse proxy's address alone if that address is outside
those ranges, or if any client can reach webhooker, or the proxy,
from an RFC 1918 source address (directly, or through anything
that can rewrite source addresses, such as NAT or a published
container port). The `remoteIP` field of the `http request` log
line for a request that came through the proxy shows that
address; the health check's own lines show `::1`. See
[Trusted proxies](#trusted-proxies).
- Leave `BIND_ADDRESS` and `DATA_DIR` unset: the image sets
`BIND_ADDRESS` to `0.0.0.0`, and `DATA_DIR` defaults to
`/var/lib/webhooker`.
@@ -802,12 +793,16 @@ reports.
behind a proxy means the `X-Forwarded-Proto` header. The block below
sets it; without it every request is read as plaintext and cookies
ship without `Secure`. See [Configuration](#configuration).
3. **Set `TRUSTED_PROXIES` to the proxy's address.** Unset, every rate
limiter keys on the connecting peer, which behind a proxy is the
proxy on every request: all clients collapse into one global bucket
per limit and the receiver's per-IP limits become service-wide
ceilings. See [Trusted proxies](#trusted-proxies). List the proxy
and nothing else.
3. **Make sure `TRUSTED_PROXIES` covers the proxy's address.** For a
proxy it does not cover, every rate limiter keys on the proxy, so
all clients share one bucket per limit. Unset, the list is the RFC
1918 ranges, which do not cover a proxy that reaches the binary
itself over loopback (the binary bound to `127.0.0.1`). With the
image, the address to check is the `remoteIP` field of the
`http request` log line for a request that came through the proxy.
If any client can reach webhooker, or the proxy, from an RFC 1918
source address, set the list to the proxy's address alone. See
[Trusted proxies](#trusted-proxies).
4. **Send `Host` as `$http_host`, not `$host`.** `$host` strips the
port. webhooker's Origin/Referer check compares against the host it
was given, so on any port other than 443 `$host` makes every form
@@ -1360,10 +1355,11 @@ It uses:
- **[go-chi/httprate](https://github.com/go-chi/httprate)** for
sliding-window rate limiting of the password-change and webhook
receiver endpoints. The bucket is per client IP only when
`TRUSTED_PROXIES` names the reverse proxy; unset, every client
behind that proxy shares one bucket per limit. The login endpoint
counts failed attempts itself instead, so that a correct password is
never throttled (see [Rate Limiting](#rate-limiting))
`TRUSTED_PROXIES` covers the reverse proxy (by default it covers the
RFC 1918 private ranges); otherwise every client behind that proxy
shares one bucket per limit. The login endpoint counts failed
attempts itself instead, so that a correct password is never
throttled (see [Rate Limiting](#rate-limiting))
- **[Prometheus](https://prometheus.io)** for metrics, served at
`/metrics` behind basic auth
- **[Sentry](https://sentry.io)** for optional error reporting
@@ -1642,7 +1638,6 @@ data for auditing, for replay, and for resubmission.
| `headers` | JSON | Complete request headers |
| `body` | text | Raw request body |
| `content_type` | string | Content-Type header value |
| `body_bytes` | integer | The body's size in bytes, recorded when the event is stored, on receipt and on resubmit |
| `resubmitted_from_id` | UUID | The event this one was copied from by a resubmit (nullable; empty for an event that arrived on the receiver). Not a foreign key: the source event can be reaped by retention while its copies remain |
**Relations:** Belongs to Webhook. Belongs to Entrypoint. Has many
@@ -2534,47 +2529,44 @@ the tree is checked out: four checkouts have reported 3,959, 3,961,
client-supplied field was cut, and that the shipped chain's stack
arrived uncut — never the numbers.
Every limiter here — receiver, login, and password change — identifies
the client the same way, through one shared key function: the
connection's own address, unless the peer is listed in
`TRUSTED_PROXIES`, in which case the forwarded client address is used
instead. That address becomes a bucket by family: IPv4 keys on the full
address, IPv6 on its `/64` prefix. A routed `/64` is the normal
Every limiter here — receiver, login, password change, delivery replay
and event resubmit — identifies the client the same way, through one
shared key function: the connection's own address, unless the peer is
inside `TRUSTED_PROXIES`, in which case the forwarded client address is
used instead. That address becomes a bucket by family: IPv4 keys on
the full address, IPv6 on its `/64` prefix. A routed `/64` is the normal
residential and mobile IPv6 allocation, so keying IPv6 per address would
let one subscriber rotate source addresses and mint a fresh bucket per
request, evading these limits at the network layer without spoofing
anything; the cost is that distinct clients inside one `/64` share a
bucket. IPv4-mapped addresses (`::ffff:1.2.3.4`) key as the IPv4 address
they carry. See [Trusted proxies](#trusted-proxies). Deployed without that
variable set, a client behind a reverse proxy shares one bucket with
every other client behind the same proxy. Set `TRUSTED_PROXIES` to the
proxy's address to get per-client limits back. What the shared bucket
they carry. See [Trusted proxies](#trusted-proxies). When that variable
does not cover the reverse proxy, a client behind it shares one bucket
with every other client behind the same proxy. Set `TRUSTED_PROXIES` to
the proxy's address to get per-client limits back. What the shared bucket
costs is not the same for every limiter, and the two cases pull in
opposite directions:
- For the **receiver** limits it costs throughput, which is the safe
direction to be wrong in: sharing can only make a limit bind sooner,
never let a sender past it. It matters more for the aggregate limit
than for the per-entrypoint one: with `TRUSTED_PROXIES` unset behind
the reverse proxy a production deployment is required to run behind,
every request keys on the proxy, so the aggregate limit becomes a
service-wide ceiling of 1200 requests per minute across all senders
and all entrypoints, where the per-entrypoint limit's capacity still
grows with the number of entrypoints. Any deployment with more than a
handful of busy entrypoints must set `TRUSTED_PROXIES`.
than for the per-entrypoint one: with every request keyed on the
proxy, the aggregate limit becomes a service-wide ceiling of 1200
requests per minute across all senders and all entrypoints, where the
per-entrypoint limit's capacity still grows with the number of
entrypoints.
- For the **login and password-change** limits it costs precision, not
availability. Login failures from every client land in one counter,
so a stranger's wrong passwords make the operator's own wrong
passwords answer `429` sooner; the operator's _correct_ password is
never affected, because it is never counted. Production deployments
should still set `TRUSTED_PROXIES`; webhooker warns at startup
whenever it is empty, in any environment.
never affected, because it is never counted.
#### The login endpoint
The login `POST` is the one endpoint with no pre-emptive limiter in
front of it, and that is deliberate. A limiter that spends budget on
arrival is a lockout in this deployment shape: sharing one bucket, a
arrival is a lockout wherever clients share one bucket, as they do
behind a reverse proxy that `TRUSTED_PROXIES` does not cover: a
stranger sending five POSTs a minute — about 0.08 requests per second,
from anywhere — keeps it permanently full, and the operator has no
second administrative path. So the handler inverts the order:
@@ -2671,8 +2663,10 @@ re-fills both verification slots on its first two requests. The
remedies are to block the source at the reverse proxy, or to
rate-limit `POST /pages/login` there — the one place a limit can be
applied without reintroducing the lockout, because the proxy sees the
real client address. Setting `TRUSTED_PROXIES` does not stop the
saturation, but it makes the source visible in the failure logs.
real client address. `TRUSTED_PROXIES` does not stop the saturation.
The flood's source is in the proxy's access log: webhooker's own logs
record the proxy's address, not the client's (see
[Deployment behind a reverse proxy](#deployment-behind-a-reverse-proxy)).
Finer-grained per-webhook rate limits (configured in the web UI and
enforced in the webhook handler) can layer on top of this env-level
@@ -3030,10 +3024,9 @@ check, see [The login endpoint](#the-login-endpoint).
It runs behind session auth, so only a client already holding a
valid session reaches it, and an operator throttled out of changing
a password can still log in. The bucket is per client IP only when
`TRUSTED_PROXIES` names the reverse proxy; unset, every client
`TRUSTED_PROXIES` covers the reverse proxy; otherwise every client
shares one bucket, which costs precision rather than availability
(see [Rate Limiting](#rate-limiting)). webhooker warns at startup
whenever `TRUSTED_PROXIES` is empty
(see [Rate Limiting](#rate-limiting))
- Prometheus metrics behind basic auth
- Static assets embedded in binary (no filesystem access needed at
runtime)
+1 -1
View File
@@ -4,7 +4,6 @@ go 1.26.1
require (
github.com/99designs/basicauth-go v0.0.0-20230316000542-bf6f9cbbf0f8
github.com/dustin/go-humanize v1.0.1
github.com/getsentry/sentry-go v0.25.0
github.com/go-chi/chi v1.5.5
github.com/go-chi/cors v1.2.1
@@ -30,6 +29,7 @@ require (
github.com/beorn7/perks v1.0.1 // indirect
github.com/cespare/xxhash/v2 v2.2.0 // indirect
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
github.com/dustin/go-humanize v1.0.1 // indirect
github.com/gorilla/securecookie v1.1.2 // indirect
github.com/jinzhu/inflection v1.0.0 // indirect
github.com/jinzhu/now v1.1.5 // indirect
+22 -60
View File
@@ -75,6 +75,11 @@ const (
// internet-exposed endpoint.
defaultReceiverRateLimit = 120
// defaultTrustedProxies is TRUSTED_PROXIES when it is unset: the
// RFC 1918 private ranges, which a reverse proxy reaching the
// process over a Docker network or a private LAN connects from.
defaultTrustedProxies = "10.0.0.0/8,172.16.0.0/12,192.168.0.0/16"
// maxPort is the highest valid TCP port number. The lower
// bound (at least 1) is enforced by envPositiveInt.
maxPort = 65535
@@ -172,13 +177,14 @@ type Config struct {
// TrustedProxies is the set of networks whose members are
// allowed to speak for the client with X-Forwarded-For, the
// only forwarded header read. It is empty unless
// TRUSTED_PROXIES is set, and empty means no peer is
// trusted: forwarded headers are then ignored entirely and
// clients are identified by the connection's own address.
// Members can choose their own rate-limit key, so this must
// name proxy hosts only, never a block that also covers
// clients.
// only forwarded header read. Unless TRUSTED_PROXIES is set it
// is the RFC 1918 private ranges (defaultTrustedProxies); a set
// value replaces them. If any client can reach the process, or
// the proxy in front of it, from an RFC 1918 source address
// (directly, or through anything that can rewrite source
// addresses, such as NAT or a published container port), it
// must be set to the proxy's address alone, or every rate limit
// can be bypassed by those clients.
TrustedProxies []netip.Prefix
// AllowedEgressCIDRs is the set of networks a delivery target
@@ -460,14 +466,15 @@ func parseCIDR(entry string) (netip.Prefix, error) {
// envPrefixList returns the value of the named environment variable
// parsed as a comma-separated list of CIDR blocks (bare addresses
// allowed). An unset, empty, or blank value yields an empty list. A
// set value containing an unparseable entry is a hard error naming
// the key and the bad entry, so startup fails loudly rather than
// silently running with a list the operator did not intend.
func envPrefixList(key string) ([]netip.Prefix, error) {
// allowed). An unset, empty, or blank value is read as defaultValue
// instead. A set value containing an unparseable entry is a hard
// error naming the key and the bad entry, so startup fails loudly
// rather than silently running with a list the operator did not
// intend.
func envPrefixList(key, defaultValue string) ([]netip.Prefix, error) {
v := strings.TrimSpace(os.Getenv(key))
if v == "" {
return nil, nil
v = defaultValue
}
var prefixes []netip.Prefix
@@ -681,12 +688,12 @@ func loadFromEnv() (*Config, error) {
return nil, err
}
trustedProxies, err := envPrefixList("TRUSTED_PROXIES")
trustedProxies, err := envPrefixList("TRUSTED_PROXIES", defaultTrustedProxies)
if err != nil {
return nil, err
}
allowedEgressCIDRs, err := envPrefixList("ALLOWED_EGRESS_CIDRS")
allowedEgressCIDRs, err := envPrefixList("ALLOWED_EGRESS_CIDRS", "")
if err != nil {
return nil, err
}
@@ -760,50 +767,6 @@ func (c *Config) warnEgressAllowlist(log *slog.Logger) {
)
}
// warnSharedRateLimitBucket logs a startup warning whenever
// TRUSTED_PROXIES is empty, in any environment.
//
// With no trusted proxies every rate limiter keys on the connecting
// peer's address. Whether that is harmless or dangerous depends on
// what is in front of the process, which this code cannot observe:
// with nothing in front, the peer is the client and the limits are
// per-client as intended; behind a reverse proxy the peer is the proxy
// for every request, so all clients share one bucket per limiter.
//
// The login endpoint no longer spends budget on arrival — it verifies
// credentials first and charges only failures — so a shared bucket
// cannot deny the operator a correct password. What it does collapse
// is the failure counting: one client's wrong passwords throttle
// everyone else's wrong passwords, and the receiver's limits become
// service-wide ceilings.
//
// The warning is deliberately not gated on WEBHOOKER_ENVIRONMENT:
// behind a proxy every client shares one bucket in dev and prod alike.
//
// The default of trusting nobody is deliberate — trusting forwarded
// headers from arbitrary peers lets any client choose its own bucket —
// so this warns rather than failing startup or changing the key.
func (c *Config) warnSharedRateLimitBucket(log *slog.Logger) {
if len(c.TrustedProxies) > 0 {
return
}
log.Warn(
"TRUSTED_PROXIES is empty: every rate limit keys on the "+
"connecting peer's address. With nothing proxying to "+
"this process that is the client itself and the limits "+
"are per-client as intended. Behind a reverse proxy the "+
"peer is the proxy on every request, so all clients "+
"share one bucket per limit: the receiver limits become "+
"service-wide ceilings, and one client's failed logins "+
"throttle every other client's failed logins — a "+
"correct password still gets in. If anything proxies to "+
"this process, set TRUSTED_PROXIES to its address.",
"environment", c.Environment,
"trustedProxies", len(c.TrustedProxies),
)
}
// New creates a Config by reading environment variables.
//
//nolint:revive // lc parameter is required by fx even if unused.
@@ -849,7 +812,6 @@ func New(lc fx.Lifecycle, params ConfigParams) (*Config, error) {
"hasMetricsAuth", s.MetricsAuthEnabled(),
)
s.warnSharedRateLimitBucket(log)
s.warnEgressAllowlist(log)
return s, nil
+14 -101
View File
@@ -551,6 +551,11 @@ func testReceiverRateLimitSuccess(
}
func TestTrustedProxies(t *testing.T) {
// Unset, the RFC 1918 private ranges are trusted, so a reverse
// proxy on a Docker network or a private LAN is covered without
// configuration.
defaultProxies := []string{cidrPrivateV4, "172.16.0.0/12", "192.168.0.0/16"}
tests := []struct {
name string
set bool
@@ -559,18 +564,21 @@ func TestTrustedProxies(t *testing.T) {
expected []string
}{
{
// The default must be "trust nobody": an empty list
// means forwarded headers are ignored, never that
// every peer may speak for the client.
name: caseUnsetUsesDefault,
set: false,
expected: []string{},
expected: defaultProxies,
},
{
name: "blank value trusts nothing",
name: "blank value uses default",
set: true,
value: " ",
expected: []string{},
expected: defaultProxies,
},
{
name: "set value replaces the default entirely",
set: true,
value: "203.0.113.7",
expected: []string{"203.0.113.7/32"},
},
{
name: caseValidValueParsed,
@@ -845,101 +853,6 @@ func TestEgressAllowlistWarning(t *testing.T) {
}
}
// TestSharedRateLimitBucketWarning covers the startup warning that
// tells an operator a deployment behind a reverse proxy shares one
// rate-limit bucket between every client, which turns the receiver
// limits into service-wide ceilings and collapses login failure
// counting. It must fire whenever TRUSTED_PROXIES is empty, in any
// environment, because behind a proxy every client shares one bucket
// in dev and prod alike. It stays quiet once proxies are named.
func TestSharedRateLimitBucketWarning(t *testing.T) {
tests := []struct {
name string
environment string
trustedProxies string
expectWarning bool
}{
{
name: "prod without trusted proxies warns",
environment: config.EnvironmentProd,
expectWarning: true,
},
{
name: "prod with trusted proxies is quiet",
environment: config.EnvironmentProd,
trustedProxies: cidrPrivateV4,
expectWarning: false,
},
{
name: "dev without trusted proxies warns",
environment: config.EnvironmentDev,
expectWarning: true,
},
{
name: "dev with trusted proxies is quiet",
environment: config.EnvironmentDev,
trustedProxies: cidrPrivateV4,
expectWarning: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
// Cannot use t.Parallel() here because t.Setenv
// is incompatible with parallel subtests.
t.Setenv("WEBHOOKER_ENVIRONMENT", tt.environment)
if tt.trustedProxies == "" {
require.NoError(
t, os.Unsetenv("TRUSTED_PROXIES"),
)
} else {
t.Setenv("TRUSTED_PROXIES", tt.trustedProxies)
}
var buf bytes.Buffer
log := slog.New(slog.NewJSONHandler(
&buf, &slog.HandlerOptions{
Level: slog.LevelDebug,
},
))
require.NoError(
t,
config.WarnSharedRateLimitBucketForTest(log),
)
if !tt.expectWarning {
assert.Empty(t, buf.String())
return
}
logged := buf.String()
assert.Contains(t, logged, `"level":"WARN"`)
assert.Contains(t, logged, "TRUSTED_PROXIES")
assert.Contains(t, logged, "share one bucket")
assert.Contains(
t, logged, "throttle every other client's failed logins",
)
// The warning must not claim a lockout the login
// endpoint no longer permits: credentials are verified
// before any budget is spent.
assert.Contains(
t, logged, "a correct password still gets in",
)
// The text must stay accurate for a developer with
// nothing in front of the process, where an empty
// list costs nothing.
assert.Contains(
t, logged, "nothing proxying to this process",
)
})
}
}
// metricsEnv describes what one subtest below puts in the
// environment for a single METRICS_ variable. A variable that is
// set to the empty string and one that is not set at all are
-15
View File
@@ -6,21 +6,6 @@ import "log/slog"
// the external config_test package so each helper can be covered by
// its own table-driven test without weakening the package API.
// WarnSharedRateLimitBucketForTest loads a Config from the current
// environment and emits its startup warnings to log. The real logger
// writes to stdout, so this lets the warning's firing condition be
// asserted against a handler the test controls.
func WarnSharedRateLimitBucketForTest(log *slog.Logger) error {
c, err := loadFromEnv()
if err != nil {
return err
}
c.warnSharedRateLimitBucket(log)
return nil
}
// WarnEgressAllowlistForTest loads a Config from the current
// environment and emits its egress-allowlist startup warning to
// log, so a test can assert both that the warning fires only when
-5
View File
@@ -31,11 +31,6 @@ type Event struct {
Body string `gorm:"type:text" json:"body"`
ContentType string `json:"contentType"`
// BodyBytes is the size of Body in bytes, recorded when the event
// is stored so the recent events list can show it without reading
// the body.
BodyBytes int64 `gorm:"not null" json:"bodyBytes"`
// ResubmittedFromID names the event this one was copied from by
// an operator resubmit. It is nil for an event that arrived on
// the receiver, which is every event created before the column
+5 -22
View File
@@ -17,10 +17,6 @@ const (
// dnsResolutionTimeout is the maximum time to wait for
// DNS resolution during SSRF validation.
dnsResolutionTimeout = 5 * time.Second
// azureWireServer is Azure's WireServer, a public address that
// serves VM credentials.
azureWireServer = "168.63.129.16"
)
// Sentinel errors for SSRF validation.
@@ -29,14 +25,8 @@ var (
errNoIPs = errors.New(
"hostname resolved to no IP addresses",
)
// ErrBlockedIP reports a private or reserved address the
// default blocklist refuses, one that ALLOWED_EGRESS_CIDRS
// can open.
ErrBlockedIP = errors.New(
"blocked private or reserved address",
)
errBlockedWireServer = errors.New(
"blocked cloud metadata address",
errBlockedIP = errors.New(
"blocked private, reserved or cloud metadata address",
)
errBlockedMetadata = errors.New(
"blocked link-local or cloud instance metadata " +
@@ -133,7 +123,8 @@ func init() {
"::1/128",
"fc00::/7",
"fe80::/10",
azureWireServer + "/32",
// Azure WireServer, a public address that serves VM credentials.
"168.63.129.16/32",
})
// Every entry is named. The set must not grow or shrink
@@ -347,17 +338,9 @@ func (g *Guard) checkIP(ip net.IP) error {
return nil
}
// WireServer is on the default blocklist but is a public
// address, so its refusal does not call it private or reserved.
if ip.Equal(net.ParseIP(azureWireServer)) {
return fmt.Errorf(
"target IP %s: %w", ip, errBlockedWireServer,
)
}
if isBlockedIP(ip) {
return fmt.Errorf(
"target IP %s: %w", ip, ErrBlockedIP,
"target IP %s: %w", ip, errBlockedIP,
)
}
+4 -3
View File
@@ -103,9 +103,10 @@ func (h *Handlers) renderLoginError(
// The credential check runs BEFORE any rate-limit budget is
// consulted, and only a failed check spends budget. That is what
// keeps the single administrative path reachable: behind the reverse
// proxy this deployment requires, with TRUSTED_PROXIES unset, every
// client shares one bucket, so a limiter spent on arrival lets any
// stranger deny the operator's own correct password indefinitely.
// proxy this deployment requires, when TRUSTED_PROXIES does not cover
// it, every client shares one bucket, so a limiter spent on arrival
// lets any stranger deny the operator's own correct password
// indefinitely.
//
// Verifying first means every login POST costs an Argon2id hash, so
// the work is taken under a bounded number of verification slots.
+6 -6
View File
@@ -25,7 +25,7 @@ const (
// sharedProxyPeer is the whole point of this file. Production is
// required to run behind a TLS-terminating reverse proxy, and
// TRUSTED_PROXIES defaults to empty, so every client — attacker
// when TRUSTED_PROXIES does not cover it every client — attacker
// and operator alike — reaches the process from the proxy's
// address and shares one rate-limit bucket. Both parties in
// these tests therefore use the same RemoteAddr.
@@ -115,11 +115,11 @@ func floodFailures(
// done-criterion of https://git.eeqj.de/sneak/webhooker/issues/150.
//
// The attacker and the operator share one rate-limit bucket, because
// behind the mandated reverse proxy with TRUSTED_PROXIES unset every
// client keys on the proxy's address. The attacker floods the
// operator's own username — a single-admin product has a predictable
// one — far past the failure limit. The operator must still be able
// to log in with the correct password.
// behind the mandated reverse proxy, when TRUSTED_PROXIES does not
// cover it, every client keys on the proxy's address. The attacker
// floods the operator's own username — a single-admin product has a
// predictable one — far past the failure limit. The operator must
// still be able to log in with the correct password.
//
// This fails if credentials stop being verified ahead of the limiter.
func TestLogin_StrangersFloodCannotLockOutTheOperator(t *testing.T) {
-1
View File
@@ -204,7 +204,6 @@ func assertEventCopy(
assert.Equal(t, original.Method, fresh.Method)
assert.Equal(t, original.Headers, fresh.Headers)
assert.Equal(t, original.Body, fresh.Body)
assert.Equal(t, int64(len(original.Body)), fresh.BodyBytes)
assert.Equal(t, original.ContentType, fresh.ContentType)
assert.Equal(t, original.EntrypointID, fresh.EntrypointID)
assert.Equal(t, original.WebhookID, fresh.WebhookID)
+1 -1
View File
@@ -28,7 +28,7 @@ const (
// maxBodyShift is the bit shift for 1 MB body limit.
maxBodyShift = 20
// recentEventLimit is the number of recent events to show.
recentEventLimit = 50
recentEventLimit = 20
// paginationPerPage is the number of items per page.
paginationPerPage = 25
-2
View File
@@ -88,8 +88,6 @@ func TestHandleProfile_OwnProfile_OK(t *testing.T) {
h.HandleProfile().ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
assert.Contains(t, w.Body.String(), "Account Information")
assert.NotContains(t, w.Body.String(), "Account Type")
}
func TestHandleProfile_OtherProfile_Forbidden(t *testing.T) {
-293
View File
@@ -1,293 +0,0 @@
package handlers
import (
"net/http"
"slices"
"strconv"
"time"
"github.com/dustin/go-humanize"
"gorm.io/gorm"
"sneak.berlin/go/webhooker/internal/database"
)
// recentEventColumns is the recent events list's projection. It
// leaves out the body, for the reason maxRenderedBodyBytes gives,
// and reads its size from body_bytes, recorded when the event was
// stored.
const recentEventColumns = "id, created_at, method, content_type, " +
"resubmitted_from_id, body_bytes"
// recentAttemptColumns is the part of a recorded attempt the list
// uses. The event log's deliveryResultColumns also reads response
// bodies, which the list does not show.
const recentAttemptColumns = "delivery_id, status_code, created_at"
// RecentEventView is one row of the recent events list on a
// webhook's page.
type RecentEventView struct {
Method string
ContentType string
// ResubmittedFromID names the event this one was copied from,
// empty for an event that arrived on the receiver.
ResubmittedFromID string
// Received is how long ago the event arrived, and ReceivedUTC
// the full timestamp the page shows on hover.
Received string
ReceivedUTC string
// Size is the size of the stored body.
Size string
// ProcessingTime is how long the event's slowest delivery
// took; see processingTime.
ProcessingTime string
// Status is what the webhook's HTTP target answered, and
// StatusClass its colour; see targetStatus. Both are empty
// unless the webhook has exactly one HTTP target.
Status string
StatusClass string
}
// recentEventRow is one row of recentEventColumns.
type recentEventRow struct {
ID string
CreatedAt time.Time
Method string
ContentType string
ResubmittedFromID *string
BodyBytes uint64
}
// recentAttemptRow is one row of recentAttemptColumns. CreatedAt is
// when the attempt's result was recorded, which is when the attempt
// finished.
type recentAttemptRow struct {
DeliveryID string
StatusCode int
CreatedAt time.Time
}
// singleHTTPTargetID returns the ID of the webhook's HTTP target
// when it has exactly one, and "" when it has none or several.
func singleHTTPTargetID(targets []database.Target) string {
id := ""
count := 0
for i := range targets {
if targets[i].Type == database.TargetTypeHTTP {
id = targets[i].ID
count++
}
}
if count != 1 {
return ""
}
return id
}
// loadRecentEvents loads the webhook's recentEventLimit newest
// events for its page, newest first. statusTargetID is the
// webhook's only HTTP target, or "" when the list shows no status.
func loadRecentEvents(
webhookDB *gorm.DB, webhookID, statusTargetID string,
) ([]RecentEventView, error) {
var rows []recentEventRow
err := webhookDB.Model(&database.Event{}).
Select(recentEventColumns).
Where("webhook_id = ?", webhookID).
Order("created_at DESC").
Limit(recentEventLimit).
Find(&rows).Error
if err != nil {
return nil, err
}
eventIDs := make([]string, len(rows))
for i := range rows {
eventIDs[i] = rows[i].ID
}
// Oldest first, so an event's last delivery to a target is its
// newest: a replay adds a delivery rather than changing the
// earlier one.
var deliveries []database.Delivery
err = webhookDB.
Select("id, event_id, target_id, status, created_at").
Where("event_id IN ?", eventIDs).
Order("created_at ASC").
Find(&deliveries).Error
if err != nil {
return nil, err
}
byEvent := make(map[string][]database.Delivery, len(rows))
deliveryIDs := make([]string, len(deliveries))
for i := range deliveries {
eventID := deliveries[i].EventID
byEvent[eventID] = append(byEvent[eventID], deliveries[i])
deliveryIDs[i] = deliveries[i].ID
}
attempts, err := loadRecentAttempts(webhookDB, deliveryIDs)
if err != nil {
return nil, err
}
views := make([]RecentEventView, len(rows))
for i := range rows {
views[i] = rows[i].view(
byEvent[rows[i].ID], attempts, statusTargetID,
)
}
return views, nil
}
// loadRecentAttempts loads the recorded attempts of the listed
// events' deliveries, keyed by delivery ID, each delivery's in
// attempt order. The IDs go in chunks for the reason
// deliveryIDChunkSize gives.
func loadRecentAttempts(
webhookDB *gorm.DB, deliveryIDs []string,
) (map[string][]recentAttemptRow, error) {
byDelivery := make(map[string][]recentAttemptRow)
for chunk := range slices.Chunk(deliveryIDs, deliveryIDChunkSize) {
var rows []recentAttemptRow
err := webhookDB.Model(&database.DeliveryResult{}).
Select(recentAttemptColumns).
Where("delivery_id IN ?", chunk).
Order("attempt_num ASC").
Find(&rows).Error
if err != nil {
return nil, err
}
for i := range rows {
id := rows[i].DeliveryID
byDelivery[id] = append(byDelivery[id], rows[i])
}
}
return byDelivery, nil
}
// view projects a loaded row for rendering. deliveries is the
// event's deliveries, oldest first, and attempts their recorded
// attempts keyed by delivery ID.
func (r *recentEventRow) view(
deliveries []database.Delivery,
attempts map[string][]recentAttemptRow,
statusTargetID string,
) RecentEventView {
v := RecentEventView{
Method: r.Method,
ContentType: r.ContentType,
Received: humanize.Time(r.CreatedAt),
ReceivedUTC: r.CreatedAt.UTC().Format(time.DateTime) + " UTC",
Size: humanize.Bytes(r.BodyBytes),
ProcessingTime: processingTime(deliveries, attempts),
}
if r.ResubmittedFromID != nil {
v.ResubmittedFromID = *r.ResubmittedFromID
}
if statusTargetID != "" {
v.Status, v.StatusClass = targetStatus(
deliveries, attempts, statusTargetID,
)
}
return v
}
// processingTime is how long the event's slowest delivery took,
// from being queued to its last recorded attempt, time spent
// waiting between retries included. A delivery is queued when its
// event is received, or when an operator replays it, so a replay
// is timed from the replay rather than from the event's arrival.
// It is "in progress" while any delivery is pending or retrying,
// and empty for an event with no deliveries.
func processingTime(
deliveries []database.Delivery,
attempts map[string][]recentAttemptRow,
) string {
if len(deliveries) == 0 {
return ""
}
var slowest time.Duration
for i := range deliveries {
if !deliveries[i].Status.Terminal() {
return "in progress"
}
tries := attempts[deliveries[i].ID]
if len(tries) == 0 {
continue
}
last := tries[len(tries)-1].CreatedAt
slowest = max(slowest, last.Sub(deliveries[i].CreatedAt))
}
return slowest.Round(time.Millisecond).String()
}
// targetStatus is what the target answered for the event, and the
// colour to show it in: the HTTP status code of the last attempt of
// the event's newest delivery to the target. Without a code it is
// "no response" when that attempt failed before a response
// arrived, the delivery's status ("pending") before any attempt,
// and "not sent" when the event has no delivery to the target.
func targetStatus(
deliveries []database.Delivery,
attempts map[string][]recentAttemptRow,
targetID string,
) (string, string) {
newest := -1
for i := range deliveries {
if deliveries[i].TargetID == targetID {
newest = i
}
}
if newest < 0 {
return "not sent", "text-gray-400"
}
tries := attempts[deliveries[newest].ID]
if len(tries) == 0 {
return string(deliveries[newest].Status), "text-gray-400"
}
code := tries[len(tries)-1].StatusCode
switch {
case code == 0:
return "no response", "text-red-600"
case code >= http.StatusInternalServerError:
return strconv.Itoa(code), "text-red-600"
case code >= http.StatusBadRequest:
return strconv.Itoa(code), "text-yellow-600"
case code >= http.StatusMultipleChoices:
return strconv.Itoa(code), "text-gray-500"
case code >= http.StatusOK:
return strconv.Itoa(code), "text-green-600"
default:
return strconv.Itoa(code), "text-gray-500"
}
}
-362
View File
@@ -1,362 +0,0 @@
package handlers_test
import (
"context"
"fmt"
"net/http"
"net/http/httptest"
"strings"
"testing"
"time"
"github.com/go-chi/chi"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"gorm.io/gorm"
"gorm.io/gorm/clause"
"sneak.berlin/go/webhooker/internal/database"
"sneak.berlin/go/webhooker/internal/handlers"
"sneak.berlin/go/webhooker/internal/session"
)
// statusTitle marks the status column's cell in a recent events
// row; it is absent from the page when the column is not shown.
const statusTitle = `title="HTTP status from the HTTP target"`
// recentEventsFixture is one started app and a webhook whose
// recent events list a test fills.
type recentEventsFixture struct {
h *handlers.Handlers
sess *session.Session
db *database.Database
webhook *database.Webhook
webhookDB *gorm.DB
}
func newRecentEventsFixture(t *testing.T) *recentEventsFixture {
t.Helper()
f := &recentEventsFixture{}
var dbMgr *database.WebhookDBManager
app := newTestApp(t, &f.h, &f.sess, &f.db, &dbMgr)
app.RequireStart()
t.Cleanup(app.RequireStop)
f.webhook = seedWebhook(t, f.db)
webhookDB, err := dbMgr.GetDB(f.webhook.ID)
require.NoError(t, err)
f.webhookDB = webhookDB
return f
}
func (f *recentEventsFixture) render(t *testing.T) string {
t.Helper()
return renderSourceDetailPage(t, f.h, f.sess, f.webhook.ID)
}
// event records an event received at receivedAt, with its body's
// size as the receiver records it.
func (f *recentEventsFixture) event(
t *testing.T, contentType, body string, receivedAt time.Time,
) *database.Event {
t.Helper()
event := &database.Event{
WebhookID: f.webhook.ID,
Method: http.MethodPost,
Body: body,
BodyBytes: int64(len(body)),
ContentType: contentType,
}
event.CreatedAt = receivedAt
require.NoError(t, f.webhookDB.Omit(
clause.Associations,
).Create(event).Error)
return event
}
// delivery records a delivery of the event to the target, queued
// when the event was received.
func (f *recentEventsFixture) delivery(
t *testing.T,
event *database.Event,
targetID string,
status database.DeliveryStatus,
) *database.Delivery {
t.Helper()
return f.deliveryQueuedAt(
t, event, targetID, status, event.CreatedAt,
)
}
// deliveryQueuedAt records a delivery of the event to the target,
// queued at queuedAt, as a replay is.
func (f *recentEventsFixture) deliveryQueuedAt(
t *testing.T,
event *database.Event,
targetID string,
status database.DeliveryStatus,
queuedAt time.Time,
) *database.Delivery {
t.Helper()
dlv := &database.Delivery{
EventID: event.ID,
TargetID: targetID,
Status: status,
}
dlv.CreatedAt = queuedAt
require.NoError(t, f.webhookDB.Omit(
clause.Associations,
).Create(dlv).Error)
return dlv
}
// attempt records one attempt of the delivery that finished took
// after the delivery was queued, with HTTP status code (0 for no
// response).
func (f *recentEventsFixture) attempt(
t *testing.T, dlv *database.Delivery, code int, took time.Duration,
) {
t.Helper()
result := &database.DeliveryResult{
DeliveryID: dlv.ID,
AttemptNum: 1,
StatusCode: code,
}
result.CreatedAt = dlv.CreatedAt.Add(took)
require.NoError(t, f.webhookDB.Omit(
clause.Associations,
).Create(result).Error)
}
// statusCell is the status column's cell as the page renders it.
func statusCell(class, text string) string {
return `<span class="font-medium ` + class + `" ` + statusTitle +
`>` + text + `</span>`
}
// TestHandleSourceDetail_ShowsFiftyNewestEvents proves the list is
// headed "50 Most Recent Events" and holds the 50 newest events,
// newest first, and not one more.
func TestHandleSourceDetail_ShowsFiftyNewestEvents(t *testing.T) {
t.Parallel()
f := newRecentEventsFixture(t)
base := time.Now().Add(-time.Hour)
for i := range 51 {
f.event(
t, fmt.Sprintf("application/x-recent-%02d", i), "{}",
base.Add(time.Duration(i)*time.Second),
)
}
body := f.render(t)
assert.Contains(t, body, ">50 Most Recent Events</h2>")
assert.Equal(t, 50, strings.Count(body, `title="Body size"`))
assert.NotContains(t, body, "application/x-recent-00")
assert.Contains(t, body, "application/x-recent-01")
assert.Less(
t,
strings.Index(body, "application/x-recent-50"),
strings.Index(body, "application/x-recent-49"),
)
}
// TestHandleSourceDetail_RecentEventColumns proves a row shows its
// time relative with the UTC timestamp on hover, its body size,
// and its processing time once every delivery has finished.
func TestHandleSourceDetail_RecentEventColumns(t *testing.T) {
t.Parallel()
f := newRecentEventsFixture(t)
logTarget := seedTarget(t, f.db, f.webhook.ID, database.TargetTypeLog)
receivedAt := time.Now().Add(-210 * time.Second).
UTC().Truncate(time.Second)
done := f.event(
t, contentTypeJSON, strings.Repeat("x", 2048), receivedAt,
)
f.attempt(
t,
f.delivery(t, done, logTarget.ID, database.DeliveryStatusDelivered),
0, 1500*time.Millisecond,
)
waiting := f.event(t, "text/plain", "{}", receivedAt)
f.delivery(t, waiting, logTarget.ID, database.DeliveryStatusPending)
body := f.render(t)
assert.Contains(
t, body,
`<span title="`+receivedAt.Format(time.DateTime)+
` UTC">3 minutes ago</span>`,
)
assert.Contains(t, body, `<span title="Body size">2.0 kB</span>`)
assert.Contains(t, body, ">1.5s</span>")
assert.Contains(t, body, ">in progress</span>")
}
// TestHandleSourceDetail_StatusWithSingleHTTPTarget proves that a
// webhook with exactly one HTTP target shows, colour-coded, what
// that target answered for each event. The log target beside it
// does not count against "exactly one".
func TestHandleSourceDetail_StatusWithSingleHTTPTarget(t *testing.T) {
t.Parallel()
f := newRecentEventsFixture(t)
target := seedTarget(t, f.db, f.webhook.ID, database.TargetTypeHTTP)
seedTarget(t, f.db, f.webhook.ID, database.TargetTypeLog)
now := time.Now()
for _, code := range []int{204, 302, 404, 503, 0} {
dlv := f.delivery(
t, f.event(t, contentTypeJSON, "{}", now), target.ID,
database.DeliveryStatusDelivered,
)
f.attempt(t, dlv, code, time.Second)
}
f.delivery(
t, f.event(t, contentTypeJSON, "{}", now), target.ID,
database.DeliveryStatusPending,
)
f.event(t, contentTypeJSON, "{}", now)
// A replay is a newer delivery, and its answer is the one shown.
replayed := f.event(t, contentTypeJSON, "{}", now)
f.attempt(t, f.delivery(
t, replayed, target.ID, database.DeliveryStatusFailed,
), 502, time.Second)
f.attempt(t, f.deliveryQueuedAt(
t, replayed, target.ID, database.DeliveryStatusDelivered,
now.Add(time.Minute),
), 200, time.Second)
body := f.render(t)
assert.Contains(t, body, statusCell("text-green-600", "204"))
assert.Contains(t, body, statusCell("text-gray-500", "302"))
assert.Contains(t, body, statusCell("text-yellow-600", "404"))
assert.Contains(t, body, statusCell("text-red-600", "503"))
assert.Contains(t, body, statusCell("text-red-600", "no response"))
assert.Contains(t, body, statusCell("text-gray-400", "pending"))
assert.Contains(t, body, statusCell("text-gray-400", "not sent"))
assert.Contains(t, body, statusCell("text-green-600", "200"))
assert.NotContains(t, body, ">502<")
}
// TestHandleSourceDetail_NoStatusWithoutSingleHTTPTarget proves the
// status column is absent when the webhook has no HTTP target or
// more than one.
func TestHandleSourceDetail_NoStatusWithoutSingleHTTPTarget(
t *testing.T,
) {
t.Parallel()
cases := map[string][]database.TargetType{
"none": {database.TargetTypeLog},
"several": {database.TargetTypeHTTP, database.TargetTypeHTTP},
}
for name, types := range cases {
t.Run(name, func(t *testing.T) {
t.Parallel()
f := newRecentEventsFixture(t)
event := f.event(t, contentTypeJSON, "{}", time.Now())
for _, tt := range types {
target := seedTarget(t, f.db, f.webhook.ID, tt)
f.attempt(t, f.delivery(
t, event, target.ID,
database.DeliveryStatusDelivered,
), 200, time.Second)
}
body := f.render(t)
assert.Contains(t, body, `title="Body size"`)
assert.NotContains(t, body, statusTitle)
})
}
}
// TestHandleWebhook_RecordsBodySize proves the receiver records the
// body's size in bytes, not characters, with the event it stores.
func TestHandleWebhook_RecordsBodySize(t *testing.T) {
t.Parallel()
f := newRecentEventsFixture(t)
seedEntrypoint(t, f.db, f.webhook.ID)
// Two bytes per character.
body := strings.Repeat("é", 1024)
req := httptest.NewRequestWithContext(
context.Background(), http.MethodPost, "/webhook/x",
strings.NewReader(body),
)
rctx := chi.NewRouteContext()
rctx.URLParams.Add("uuid", "ep-"+f.webhook.ID)
req = req.WithContext(context.WithValue(
req.Context(), chi.RouteCtxKey, rctx,
))
w := httptest.NewRecorder()
f.h.HandleWebhook().ServeHTTP(w, req)
require.Equal(t, http.StatusOK, w.Code)
var stored database.Event
require.NoError(t, f.webhookDB.First(&stored).Error)
assert.Equal(t, int64(2048), stored.BodyBytes)
}
// TestHandleSourceDetail_FailedLoadIsAnError proves that when the
// list cannot be loaded the page answers with an error, rather than
// an empty list claiming the webhook has no events.
func TestHandleSourceDetail_FailedLoadIsAnError(t *testing.T) {
t.Parallel()
f := newRecentEventsFixture(t)
target := seedTarget(t, f.db, f.webhook.ID, database.TargetTypeHTTP)
f.attempt(t, f.delivery(
t, f.event(t, contentTypeJSON, "{}", time.Now()), target.ID,
database.DeliveryStatusDelivered,
), 200, time.Second)
// The attempts are the list's last query, so its events and
// deliveries have already loaded when it fails.
require.NoError(t, f.webhookDB.Exec(
"DROP TABLE delivery_results",
).Error)
w := serveSourceDetailPage(t, f.h, f.sess, f.webhook.ID)
assert.Equal(t, http.StatusInternalServerError, w.Code)
assert.NotContains(t, w.Body.String(), "No events received yet.")
}
+3 -18
View File
@@ -62,23 +62,6 @@ func renderSourceDetailPage(
) string {
t.Helper()
w := serveSourceDetailPage(t, h, sess, webhookID)
require.Equal(t, http.StatusOK, w.Code)
return w.Body.String()
}
// serveSourceDetailPage runs the real source detail handler for a
// webhook and returns its response, whatever its status.
func serveSourceDetailPage(
t *testing.T,
h *handlers.Handlers,
sess *session.Session,
webhookID string,
) *httptest.ResponseRecorder {
t.Helper()
req := httptest.NewRequestWithContext(
context.Background(),
http.MethodGet,
@@ -104,7 +87,9 @@ func serveSourceDetailPage(
w := httptest.NewRecorder()
h.HandleSourceDetail().ServeHTTP(w, req)
return w
require.Equal(t, http.StatusOK, w.Code)
return w.Body.String()
}
// TestHandleSourceDetail_MasksSlackWebhookURL is the
+13 -31
View File
@@ -415,23 +415,16 @@ func (h *Handlers) renderSourceDetail(
"webhook_id = ?", webhook.ID,
).Find(&targets)
var events []RecentEventView
var events []database.Event
if h.dbMgr.DBExists(webhook.ID) {
webhookDB, err := h.dbMgr.GetDB(webhook.ID)
if err != nil {
h.serverError(w, "failed to get webhook database", err)
return
}
events, err = loadRecentEvents(
webhookDB, webhook.ID, singleHTTPTargetID(targets),
)
if err != nil {
h.serverError(w, "failed to load recent events", err)
return
webhookDB, dbErr := h.dbMgr.GetDB(webhook.ID)
if dbErr == nil {
webhookDB.Where(
"webhook_id = ?", webhook.ID,
).Order("created_at DESC").Limit(
recentEventLimit,
).Find(&events)
}
}
@@ -1577,22 +1570,11 @@ func (h *Handlers) validateTargetURL(
"url", delivery.MaskURL(targetURL),
"error", err,
)
msg := "Invalid target URL: " + err.Error()
// Only a private or reserved address's refusal says how
// to allow it. Metadata refusals never do: link-local and
// the other unconditional metadata addresses cannot be
// opened, and Azure's WireServer, which listing does
// open, hands out VM credentials.
if errors.Is(err, delivery.ErrBlockedIP) {
msg += ". Private and reserved addresses are refused " +
"by default; the server's ALLOWED_EGRESS_CIDRS " +
"setting allows named networks (see \"Allowing " +
"egress to your own network\" in the README)."
}
http.Error(w, msg, http.StatusBadRequest)
http.Error(
w,
"Invalid target URL: "+err.Error(),
http.StatusBadRequest,
)
return err
}
@@ -1,116 +0,0 @@
package handlers_test
import (
"net/http"
"net/url"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"sneak.berlin/go/webhooker/internal/database"
)
// privateRefusalHint is the sentence that tells an operator a private
// destination is refused on purpose, and how to allow one.
const privateRefusalHint = "Private and reserved addresses are " +
"refused by default; the server's ALLOWED_EGRESS_CIDRS setting " +
"allows named networks (see \"Allowing egress to your own " +
"network\" in the README)."
// TestTargetRefusal_PrivateDestinationSaysHowToAllowIt covers both
// target types that take a URL, on add and on edit.
func TestTargetRefusal_PrivateDestinationSaysHowToAllowIt(
t *testing.T,
) {
t.Parallel()
env := setupSourceTest(t)
targetTypes := []database.TargetType{
database.TargetTypeHTTP,
database.TargetTypeSlack,
}
for _, targetType := range targetTypes {
t.Run(string(targetType), func(t *testing.T) {
t.Parallel()
webhook := seedWebhookWithRetention(t, env.db, 30)
targetsPath := "/source/" + webhook.ID + "/targets"
form := url.Values{}
form.Set("name", "private")
form.Set("type", string(targetType))
form.Set("url", editBlockedURL)
added := serveTarget(
env, http.MethodPost, targetsPath, form,
)
assert.Equal(t, http.StatusBadRequest, added.Code)
assert.Contains(
t, added.Body.String(), privateRefusalHint,
)
form.Set("url", editOriginalURL)
created := serveTarget(
env, http.MethodPost, targetsPath, form,
)
require.Equal(
t, http.StatusSeeOther, created.Code,
created.Body.String(),
)
targets := targetsForWebhook(t, env.db, webhook.ID)
require.Len(t, targets, 1)
form.Set("url", editBlockedURL)
edited := submitTargetEdit(
env, webhook.ID, targets[0].ID, form,
)
assert.Equal(t, http.StatusBadRequest, edited.Code)
assert.Contains(
t, edited.Body.String(), privateRefusalHint,
)
})
}
}
// TestTargetRefusal_MetadataDestinationDoesNotSayHowToAllowIt: no
// setting opens a link-local address, and Azure's WireServer hands out
// VM credentials, so neither refusal points at the setting.
func TestTargetRefusal_MetadataDestinationDoesNotSayHowToAllowIt(
t *testing.T,
) {
t.Parallel()
env := setupSourceTest(t)
metadataURLs := map[string]string{
"link-local": "http://169.254.169.254/latest/meta-data/",
"wireserver": "http://168.63.129.16/?comp=versions",
}
for name, metadataURL := range metadataURLs {
t.Run(name, func(t *testing.T) {
t.Parallel()
webhook := seedWebhookWithRetention(t, env.db, 30)
form := url.Values{}
form.Set("name", "metadata")
form.Set("type", string(database.TargetTypeHTTP))
form.Set("url", metadataURL)
w := serveTarget(
env, http.MethodPost,
"/source/"+webhook.ID+"/targets", form,
)
assert.Equal(t, http.StatusBadRequest, w.Code)
assert.NotContains(
t, w.Body.String(), privateRefusalHint,
)
})
}
}
-1
View File
@@ -230,7 +230,6 @@ func (s eventSource) event() *database.Event {
Method: s.Method,
Headers: s.HeadersJSON,
Body: string(s.Body),
BodyBytes: int64(len(s.Body)),
ContentType: s.ContentType,
ResubmittedFromID: s.ResubmittedFromID,
}
+4 -4
View File
@@ -108,10 +108,10 @@ type failureWindow struct {
//
// A limiter that spends budget on arrival cannot protect a
// single-admin product: behind the reverse proxy the deployment
// requires, with TRUSTED_PROXIES unset, every client keys on the
// proxy, so a stranger trickling five POSTs a minute keeps the one
// bucket full and the operator's own correct password is answered 429
// forever. There is no second administrative path.
// requires, when TRUSTED_PROXIES does not cover it, every client
// keys on the proxy, so a stranger trickling five POSTs a minute
// keeps the one bucket full and the operator's own correct password
// is answered 429 forever. There is no second administrative path.
//
// So budget is spent only by a FAILED verification. A correct
// password is never throttled, whatever the counters say, which is
+2 -3
View File
@@ -123,9 +123,8 @@ func bucketKey(addr netip.Addr) string {
return prefix.String()
}
// isTrustedProxy reports whether addr belongs to a network the
// operator listed in TRUSTED_PROXIES. The list is empty by default,
// so by default nothing is trusted.
// isTrustedProxy reports whether addr belongs to a network in
// TRUSTED_PROXIES, which by default is the RFC 1918 private ranges.
func (m *Middleware) isTrustedProxy(addr netip.Addr) bool {
for _, prefix := range m.params.Config.TrustedProxies {
if prefix.Contains(addr) {
+10 -9
View File
@@ -384,8 +384,8 @@ const (
// trustedProxyCIDR is the proxy network the forwarded-path
// tests configure, and trustedPeer an address inside it. A
// production deployment is required to run behind a reverse
// proxy with TRUSTED_PROXIES set, so this is the shape the
// bucketing has to hold in.
// proxy that TRUSTED_PROXIES covers, either by the default or by
// a set value, so this is the shape the bucketing has to hold in.
trustedProxyCIDR = "10.0.0.0/8"
trustedPeer = "10.0.0.1:44444"
)
@@ -426,8 +426,8 @@ func assertSharedBucket(
}
// TestRateLimitKey_SpoofedForwardedFromUntrustedPeer is the test
// this gating exists for: with no trusted proxies configured (the
// default), a client that rotates a forwarded header on every
// this gating exists for: from a peer that is not a trusted
// proxy, a client that rotates a forwarded header on every
// request must stay in one bucket. If forwarded headers were
// trusted unconditionally, each spoofed value would mint a fresh
// bucket and the limit would stop no one.
@@ -1097,8 +1097,9 @@ func TestPostRateLimit_IPv4IndependentPerAddress(t *testing.T) {
// that arrives from trustedPeer — a configured trusted proxy — and
// names forwarded as its client in X-Forwarded-For. That is the
// production path: a deployment is required to run behind a reverse
// proxy with TRUSTED_PROXIES set, so the forwarded address, not the
// peer, is what the limiters bucket on there.
// proxy that TRUSTED_PROXIES covers, either by the default or by a
// set value, so the forwarded address, not the peer, is what the
// limiters bucket on there.
func forwardedKeyFor(
t *testing.T, m *middleware.Middleware, forwarded string,
) string {
@@ -1178,9 +1179,9 @@ func TestRateLimitKey_ForwardedIPv6BucketsByPrefix(t *testing.T) {
//
// Every existing test of this fallback uses an IPv4 proxy, where
// bucketKey is the identity function, so replacing the call with
// peer.String() leaves the whole suite green. Only operator-listed
// addresses reach this line and the fallback is fail-closed, so this
// pins behaviour rather than fixing a defect.
// peer.String() leaves the whole suite green. Only addresses inside
// TRUSTED_PROXIES reach this line and the fallback is fail-closed, so
// this pins behaviour rather than fixing a defect.
func TestRateLimitKey_TrustedPeerUnusableForwardedMasksPeer(
t *testing.T,
) {
+6 -5
View File
@@ -154,11 +154,12 @@ func (s *Server) setupPageRoutes() {
r.Use(s.mw.NoCache())
// The login POST carries no pre-emptive rate limiter. Behind
// the reverse proxy production requires, with TRUSTED_PROXIES
// unset, every client shares one bucket, so a limiter spent
// on arrival lets any stranger deny the operator the only
// administrative path. The handler verifies credentials first
// and charges only failures; see Handlers.authenticateUser.
// the reverse proxy production requires, when TRUSTED_PROXIES
// does not cover it, every client shares one bucket, so a
// limiter spent on arrival lets any stranger deny the operator
// the only administrative path. The handler verifies
// credentials first and charges only failures; see
// Handlers.authenticateUser.
r.Get("/login", s.h.HandleLoginPage())
r.Post("/login", s.h.HandleLoginSubmit())
+4
View File
@@ -41,6 +41,10 @@
<dt class="w-32 text-sm font-medium text-gray-500">Username</dt>
<dd class="text-sm text-gray-900">{{.User.Username}}</dd>
</div>
<div class="flex">
<dt class="w-32 text-sm font-medium text-gray-500">Account Type</dt>
<dd class="text-sm text-gray-900">Standard User</dd>
</div>
</dl>
</div>
</div>
+5 -17
View File
@@ -181,30 +181,18 @@
<!-- Recent Events -->
<div class="card mt-6">
<div class="p-4 border-b border-gray-200 flex justify-between items-center">
<h2 class="text-lg font-medium text-gray-900">50 Most Recent Events</h2>
<h2 class="text-lg font-medium text-gray-900">Recent Events</h2>
<a href="/source/{{.Webhook.ID}}/logs" class="btn-text text-sm">View All</a>
</div>
<div class="divide-y divide-gray-100">
{{range .Events}}
<div class="p-4">
<div class="flex flex-wrap items-center justify-between gap-3">
<div class="flex flex-wrap items-center gap-3">
<div class="flex items-center justify-between">
<div class="flex items-center gap-3">
<span class="badge-info">{{.Method}}</span>
<span class="text-sm text-gray-500 break-all">{{.ContentType}}</span>
{{if .ResubmittedFromID}}
<span class="text-xs text-gray-500" title="This event is a copy of {{.ResubmittedFromID}}">resubmitted copy</span>
{{end}}
</div>
<div class="flex flex-wrap items-center gap-3 text-xs text-gray-400">
<span title="Body size">{{.Size}}</span>
{{if .ProcessingTime}}
<span title="Processing time: how long the slowest delivery took, from being queued to its last attempt">{{.ProcessingTime}}</span>
{{end}}
{{if .Status}}
<span class="font-medium {{.StatusClass}}" title="HTTP status from the HTTP target">{{.Status}}</span>
{{end}}
<span title="{{.ReceivedUTC}}">{{.Received}}</span>
<span class="text-sm text-gray-500">{{.ContentType}}</span>
</div>
<span class="text-xs text-gray-400">{{.CreatedAt.Format "2006-01-02 15:04:05 UTC"}}</span>
</div>
</div>
{{else}}