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Header matchers: allow matching presence of header with empty list

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This commit is contained in:
Matthew Holt 2019-09-06 14:25:16 -06:00
parent 97ace2a39e
commit f6126acf37
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GPG Key ID: 2A349DD577D586A5
1 changed files with 12 additions and 2 deletions
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14
modules/caddyhttp/matchers.go
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@ -271,8 +271,13 @@ func (m *MatchHeader) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
// Match returns true if r matches m. // Match returns true if r matches m.
func (m MatchHeader) Match(r *http.Request) bool { func (m MatchHeader) Match(r *http.Request) bool {
for field, allowedFieldVals := range m { for field, allowedFieldVals := range m {
actualFieldVals, fieldExists := r.Header[textproto.CanonicalMIMEHeaderKey(field)]
if allowedFieldVals != nil && len(allowedFieldVals) == 0 && fieldExists {
// a non-nil but empty list of allowed values means
// match if the header field exists at all
continue
}
var match bool var match bool
actualFieldVals := r.Header[textproto.CanonicalMIMEHeaderKey(field)]
fieldVals: fieldVals:
for _, actualFieldVal := range actualFieldVals { for _, actualFieldVal := range actualFieldVals {
for _, allowedFieldVal := range allowedFieldVals { for _, allowedFieldVal := range allowedFieldVals {
@ -625,8 +630,13 @@ func (rm ResponseMatcher) matchStatusCode(statusCode int) bool {
func (rm ResponseMatcher) matchHeaders(hdr http.Header) bool { func (rm ResponseMatcher) matchHeaders(hdr http.Header) bool {
for field, allowedFieldVals := range rm.Headers { for field, allowedFieldVals := range rm.Headers {
actualFieldVals, fieldExists := hdr[textproto.CanonicalMIMEHeaderKey(field)]
if allowedFieldVals != nil && len(allowedFieldVals) == 0 && fieldExists {
// a non-nil but empty list of allowed values means
// match if the header field exists at all
continue
}
var match bool var match bool
actualFieldVals := hdr[textproto.CanonicalMIMEHeaderKey(field)]
fieldVals: fieldVals:
for _, actualFieldVal := range actualFieldVals { for _, actualFieldVal := range actualFieldVals {
for _, allowedFieldVal := range allowedFieldVals { for _, allowedFieldVal := range allowedFieldVals {