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package slack
import (
"context"
"net/http"
"strings"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/target/goalert/config"
"github.com/target/goalert/permission"
)
func TestValidateRequestSignature(t *testing.T) {
// Values pulled directly from: https://api.slack.com/authentication/verifying-requests-from-slack
var cfg config.Config
cfg.Slack.SigningSecret = "8f742231b10e8888abcd99yyyzzz85a5"
req, err := http.NewRequestWithContext(cfg.Context(context.Background()), "POST", "http://example.com", strings.NewReader("token=xyzz0WbapA4vBCDEFasx0q6G&team_id=T1DC2JH3J&team_domain=testteamnow&channel_id=G8PSS9T3V&channel_name=foobar&user_id=U2CERLKJA&user_name=roadrunner&command=%2Fwebhook-collect&text=&response_url=https%3A%2F%2Fhooks.slack.com%2Fcommands%2FT1DC2JH3J%2F397700885554%2F96rGlfmibIGlgcZRskXaIFfN&trigger_id=398738663015.47445629121.803a0bc887a14d10d2c447fce8b6703c"))
require.NoError(t, err)
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
req.Header.Set("X-Slack-Request-Timestamp", "1531420618")
req.Header.Set("X-Slack-Signature", "v0=a2114d57b48eac39b9ad189dd8316235a7b4a8d21a10bd27519666489c69b503")
err = validateRequestSignature(time.Unix(1531420618, 0), req)
assert.NoError(t, err)
req, err = http.NewRequestWithContext(cfg.Context(context.Background()), "POST", "http://example.com", strings.NewReader("token=xyzz0WbapA4vBCDEFasx0q6G&team_id=T1DC2JH3J&team_domain=testteamnow&channel_id=G8PSS9T3V&channel_name=foobar&user_id=U2CERLKJA&user_name=roadrunner&command=%2Fwebhook-collect&text=&response_url=https%3A%2F%2Fhooks.slack.com%2Fcommands%2FT1DC2JH3J%2F397700885554%2F96rGlfmibIGlgcZRskXaIFfN&trigger_id=398738663015.47445629121.803a0bc887a14d10d2c447fce8b6703c"))
require.NoError(t, err)
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
req.Header.Set("X-Slack-Request-Timestamp", "15314206189") // changed timestamp
req.Header.Set("X-Slack-Signature", "v0=a2114d57b48eac39b9ad189dd8316235a7b4a8d21a10bd27519666489c69b503")
// different timestamp should invalidate the signature
err = validateRequestSignature(time.Unix(1531420618, 0), req)
assert.True(t, permission.IsUnauthorized(err), "expected unauthorized error, got: %v", err)
}
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