From b0d5c2c8ae076393e7a3ad59ce875027f4c29304 Mon Sep 17 00:00:00 2001 From: Gilbert Gilb's Date: Fri, 20 Nov 2020 20:38:16 +0100 Subject: headers: Support default header values in Caddyfile with '?' (#3807) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * implement default values for header directive closes #3804 * remove `set_default` header op and rely on "require" handler instead This has the following advantages over the previous attempt: - It does not introduce a new operation for headers, but rather nicely extends over an existing feature in the header handler. - It removes the need to specify the header as "deferred" because it is already implicitely deferred by the use of the require handler. This should be less confusing to the user. * add integration test for header directive in caddyfile * bubble up errors when parsing caddyfile header directive * don't export unnecessarily and don't canonicalize headers unnecessarily * fix response headers not passed in blocks * caddyfile: fix clash when using default header in block Each header is now set in a separate handler so that it doesn't clash with other headers set/added/deleted in the same block. * caddyhttp: New idle_timeout default of 5m * reverseproxy: fix random hangs on http/2 requests with server push (#3875) see https://github.com/golang/go/issues/42534 * Refactor and cleanup with improvements * More specific link Co-authored-by: Matthew Holt Co-authored-by: Денис Телюх --- modules/caddyhttp/headers/headers_test.go | 195 +++++++++++++++++++++++++++++- 1 file changed, 192 insertions(+), 3 deletions(-) (limited to 'modules/caddyhttp/headers/headers_test.go') diff --git a/modules/caddyhttp/headers/headers_test.go b/modules/caddyhttp/headers/headers_test.go index e4f03ad..11bdb0d 100644 --- a/modules/caddyhttp/headers/headers_test.go +++ b/modules/caddyhttp/headers/headers_test.go @@ -14,8 +14,197 @@ package headers -import "testing" +import ( + "context" + "fmt" + "net/http" + "net/http/httptest" + "reflect" + "testing" -func TestReqHeaders(t *testing.T) { - // TODO: write tests + "github.com/caddyserver/caddy/v2" + "github.com/caddyserver/caddy/v2/modules/caddyhttp" +) + +func TestHandler(t *testing.T) { + for i, tc := range []struct { + handler Handler + reqHeader http.Header + respHeader http.Header + respStatusCode int + expectedReqHeader http.Header + expectedRespHeader http.Header + }{ + { + handler: Handler{ + Request: &HeaderOps{ + Add: http.Header{ + "Expose-Secrets": []string{"always"}, + }, + }, + }, + reqHeader: http.Header{ + "Expose-Secrets": []string{"i'm serious"}, + }, + expectedReqHeader: http.Header{ + "Expose-Secrets": []string{"i'm serious", "always"}, + }, + }, + { + handler: Handler{ + Request: &HeaderOps{ + Set: http.Header{ + "Who-Wins": []string{"batman"}, + }, + }, + }, + reqHeader: http.Header{ + "Who-Wins": []string{"joker"}, + }, + expectedReqHeader: http.Header{ + "Who-Wins": []string{"batman"}, + }, + }, + { + handler: Handler{ + Request: &HeaderOps{ + Delete: []string{"Kick-Me"}, + }, + }, + reqHeader: http.Header{ + "Kick-Me": []string{"if you can"}, + "Keep-Me": []string{"i swear i'm innocent"}, + }, + expectedReqHeader: http.Header{ + "Keep-Me": []string{"i swear i'm innocent"}, + }, + }, + { + handler: Handler{ + Request: &HeaderOps{ + Replace: map[string][]Replacement{ + "Best-Server": { + Replacement{ + Search: "NGINX", + Replace: "the Caddy web server", + }, + Replacement{ + SearchRegexp: `Apache(\d+)`, + Replace: "Caddy", + }, + }, + }, + }, + }, + reqHeader: http.Header{ + "Best-Server": []string{"it's NGINX, undoubtedly", "I love Apache2"}, + }, + expectedReqHeader: http.Header{ + "Best-Server": []string{"it's the Caddy web server, undoubtedly", "I love Caddy"}, + }, + }, + { + handler: Handler{ + Response: &RespHeaderOps{ + Require: &caddyhttp.ResponseMatcher{ + Headers: http.Header{ + "Cache-Control": nil, + }, + }, + HeaderOps: &HeaderOps{ + Add: http.Header{ + "Cache-Control": []string{"no-cache"}, + }, + }, + }, + }, + respHeader: http.Header{}, + expectedRespHeader: http.Header{ + "Cache-Control": []string{"no-cache"}, + }, + }, + { + handler: Handler{ + Response: &RespHeaderOps{ + Require: &caddyhttp.ResponseMatcher{ + Headers: http.Header{ + "Cache-Control": []string{"no-cache"}, + }, + }, + HeaderOps: &HeaderOps{ + Delete: []string{"Cache-Control"}, + }, + }, + }, + respHeader: http.Header{ + "Cache-Control": []string{"no-cache"}, + }, + expectedRespHeader: http.Header{}, + }, + { + handler: Handler{ + Response: &RespHeaderOps{ + Require: &caddyhttp.ResponseMatcher{ + StatusCode: []int{5}, + }, + HeaderOps: &HeaderOps{ + Add: http.Header{ + "Fail-5xx": []string{"true"}, + }, + }, + }, + }, + respStatusCode: 503, + respHeader: http.Header{}, + expectedRespHeader: http.Header{ + "Fail-5xx": []string{"true"}, + }, + }, + } { + rr := httptest.NewRecorder() + + req := &http.Request{Header: tc.reqHeader} + repl := caddy.NewReplacer() + ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl) + req = req.WithContext(ctx) + + tc.handler.Provision(caddy.Context{}) + + next := nextHandler(func(w http.ResponseWriter, r *http.Request) error { + for k, hdrs := range tc.respHeader { + for _, v := range hdrs { + w.Header().Add(k, v) + } + } + + status := 200 + if tc.respStatusCode != 0 { + status = tc.respStatusCode + } + w.WriteHeader(status) + + if tc.expectedReqHeader != nil && !reflect.DeepEqual(r.Header, tc.expectedReqHeader) { + return fmt.Errorf("expected request header %v, got %v", tc.expectedReqHeader, r.Header) + } + + return nil + }) + + if err := tc.handler.ServeHTTP(rr, req, next); err != nil { + t.Errorf("Test %d: %w", i, err) + continue + } + + actual := rr.Header() + if tc.expectedRespHeader != nil && !reflect.DeepEqual(actual, tc.expectedRespHeader) { + t.Errorf("Test %d: expected response header %v, got %v", i, tc.expectedRespHeader, actual) + continue + } + } +} + +type nextHandler func(http.ResponseWriter, *http.Request) error + +func (f nextHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) error { + return f(w, r) } -- cgit v1.2.3