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http response header tag 'ETag' needs quotes.

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As per RFC7232 ( https://www.rfc-editor.org/rfc/rfc7232#section-2.3 ) and
MDN docs ( https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/ETag#directives )
the value of the ETag in the http header response has to be between quotes.
This commit is contained in:
Stefan Oberhumer 2023-12-23 18:23:03 +01:00
parent 6f09011961
commit c1f0b9ea6f
1 changed files with 8 additions and 4 deletions
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10
src/WebApi_webapp.cpp
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@ -18,6 +18,10 @@ extern const uint8_t file_zones_json_end[] asm("_binary_webapp_dist_zones_json_g
extern const uint8_t file_app_js_end[] asm("_binary_webapp_dist_js_app_js_gz_end"); extern const uint8_t file_app_js_end[] asm("_binary_webapp_dist_js_app_js_gz_end");
extern const uint8_t file_site_webmanifest_end[] asm("_binary_webapp_dist_site_webmanifest_end"); extern const uint8_t file_site_webmanifest_end[] asm("_binary_webapp_dist_site_webmanifest_end");
#ifdef AUTO_GIT_HASH
#define ETAG_HTTP_HEADER_VAL "\"" AUTO_GIT_HASH "\"" // ETag value must be between quotes
#endif
void WebApiWebappClass::init(AsyncWebServer& server) void WebApiWebappClass::init(AsyncWebServer& server)
{ {
_server = &server; _server = &server;
@ -62,12 +66,12 @@ void WebApiWebappClass::init(AsyncWebServer& server)
}); });
_server->on("/js/app.js", HTTP_GET, [](AsyncWebServerRequest* request) { _server->on("/js/app.js", HTTP_GET, [](AsyncWebServerRequest* request) {
#ifdef AUTO_GIT_HASH #ifdef ETAG_HTTP_HEADER_VAL
// check client If-None-Match header vs ETag/AUTO_GIT_HASH // check client If-None-Match header vs ETag/AUTO_GIT_HASH
bool eTagMatch = false; bool eTagMatch = false;
if (request->hasHeader("If-None-Match")) { if (request->hasHeader("If-None-Match")) {
const AsyncWebHeader* h = request->getHeader("If-None-Match"); const AsyncWebHeader* h = request->getHeader("If-None-Match");
if (strncmp(AUTO_GIT_HASH, h->value().c_str(), strlen(AUTO_GIT_HASH)) == 0) { if (strncmp(ETAG_HTTP_HEADER_VAL, h->value().c_str(), strlen(ETAG_HTTP_HEADER_VAL)) == 0) {
eTagMatch = true; eTagMatch = true;
} }
} }
@ -82,7 +86,7 @@ void WebApiWebappClass::init(AsyncWebServer& server)
} }
// HTTP requires cache headers in 200 and 304 to be identical // HTTP requires cache headers in 200 and 304 to be identical
response->addHeader("Cache-Control", "public, must-revalidate"); response->addHeader("Cache-Control", "public, must-revalidate");
response->addHeader("ETag", AUTO_GIT_HASH); response->addHeader("ETag", ETAG_HTTP_HEADER_VAL);
#else #else
AsyncWebServerResponse* response = request->beginResponse_P(200, "text/javascript", file_app_js_start, file_app_js_end - file_app_js_start); AsyncWebServerResponse* response = request->beginResponse_P(200, "text/javascript", file_app_js_start, file_app_js_end - file_app_js_start);
response->addHeader("Content-Encoding", "gzip"); response->addHeader("Content-Encoding", "gzip");