Make the HTTPErrorHtmlResponse not Html only.

src/server/internalServer.cpp

@@ -499,7 +499,7 @@ std::unique_ptr<Response> InternalServer::handle_request(const RequestContext& r
 {
   try {
     if (! request.is_valid_url()) {
-      return HTTP404HtmlResponse(*this, request)
+      return HTTP404Response(*this, request)
              + urlNotFoundMsg;
     }
 
@@ -539,11 +539,11 @@ std::unique_ptr<Response> InternalServer::handle_request(const RequestContext& r
     return handle_content(request);
   } catch (std::exception& e) {
     fprintf(stderr, "===== Unhandled error : %s\n", e.what());
-    return HTTP500HtmlResponse(*this, request)
+    return HTTP500Response(*this, request)
          + e.what();
   } catch (...) {
     fprintf(stderr, "===== Unhandled unknown error\n");
-    return HTTP500HtmlResponse(*this, request)
+    return HTTP500Response(*this, request)
          + "Unknown error";
   }
 }
@@ -636,7 +636,7 @@ std::unique_ptr<Response> InternalServer::handle_suggest(const RequestContext& r
   }
 
   if (archive == nullptr) {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + noSuchBookErrorMsg(bookName)
            + TaskbarInfo(bookName);
   }
@@ -709,7 +709,7 @@ std::unique_ptr<Response> InternalServer::handle_skin(const RequestContext& requ
     response->set_cacheable();
     return std::move(response);
   } catch (const ResourceNotFound& e) {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg;
   }
 }
@@ -740,7 +740,7 @@ std::unique_ptr<Response> InternalServer::handle_search(const RequestContext& re
       // Searcher->search will throw a runtime error if there is no valid xapian database to do the search.
       // (in case of zim file not containing a index)
       const auto cssUrl = renderUrl(m_root, RESOURCE::templates::url_of_search_results_css);
-      HTTPErrorHtmlResponse response(*this, request, MHD_HTTP_NOT_FOUND,
+      HTTPErrorResponse response(*this, request, MHD_HTTP_NOT_FOUND,
                                  "fulltext-search-unavailable",
                                  "404-page-heading",
                                  cssUrl);
@@ -790,7 +790,7 @@ std::unique_ptr<Response> InternalServer::handle_search(const RequestContext& re
     }
     return std::move(response);
   } catch (const Error& e) {
-    return HTTP400HtmlResponse(*this, request)
+    return HTTP400Response(*this, request)
       + invalidUrlMsg
       + e.message();
   }
@@ -813,7 +813,7 @@ std::unique_ptr<Response> InternalServer::handle_random(const RequestContext& re
   }
 
   if (archive == nullptr) {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + noSuchBookErrorMsg(bookName)
            + TaskbarInfo(bookName);
   }
@@ -822,7 +822,7 @@ std::unique_ptr<Response> InternalServer::handle_random(const RequestContext& re
     auto entry = archive->getRandomEntry();
     return build_redirect(bookName, getFinalItem(*archive, entry));
   } catch(zim::EntryNotFound& e) {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + nonParameterizedMessage("random-article-failure")
            + TaskbarInfo(bookName, archive.get());
   }
@@ -836,7 +836,7 @@ std::unique_ptr<Response> InternalServer::handle_captured_external(const Request
   } catch (const std::out_of_range& e) {}
 
   if (source.empty()) {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg;
   }
 
@@ -857,7 +857,7 @@ std::unique_ptr<Response> InternalServer::handle_catalog(const RequestContext& r
     host = request.get_header("Host");
     url  = request.get_url_part(1);
   } catch (const std::out_of_range&) {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg;
   }
 
@@ -866,7 +866,7 @@ std::unique_ptr<Response> InternalServer::handle_catalog(const RequestContext& r
   }
 
   if (url != "searchdescription.xml" && url != "root.xml" && url != "search") {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg;
   }
 
@@ -963,7 +963,7 @@ std::unique_ptr<Response> InternalServer::handle_content(const RequestContext& r
 
   if (archive == nullptr) {
     const std::string searchURL = m_root + "/search?pattern=" + kiwix::urlEncode(pattern, true);
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg
            + suggestSearchMsg(searchURL, kiwix::urlDecode(pattern))
            + TaskbarInfo(bookName);
@@ -997,7 +997,7 @@ std::unique_ptr<Response> InternalServer::handle_content(const RequestContext& r
       printf("Failed to find %s\n", urlStr.c_str());
 
     std::string searchURL = m_root + "/search?content=" + bookName + "&pattern=" + kiwix::urlEncode(pattern, true);
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg
            + suggestSearchMsg(searchURL, kiwix::urlDecode(pattern))
            + TaskbarInfo(bookName, archive.get());
@@ -1017,12 +1017,12 @@ std::unique_ptr<Response> InternalServer::handle_raw(const RequestContext& reque
      bookName = request.get_url_part(1);
      kind = request.get_url_part(2);
   } catch (const std::out_of_range& e) {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg;
   }
 
   if (kind != "meta" && kind!= "content") {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg
            + invalidRawAccessMsg(kind);
   }
@@ -1034,7 +1034,7 @@ std::unique_ptr<Response> InternalServer::handle_raw(const RequestContext& reque
   } catch (const std::out_of_range& e) {}
 
   if (archive == nullptr) {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg
            + noSuchBookErrorMsg(bookName);
   }
@@ -1060,7 +1060,7 @@ std::unique_ptr<Response> InternalServer::handle_raw(const RequestContext& reque
     if (m_verbose.load()) {
       printf("Failed to find %s\n", itemPath.c_str());
     }
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg
            + rawEntryNotFoundMsg(kind, itemPath);
   }

src/server/internalServer_catalog_v2.cpp

@@ -43,7 +43,7 @@ std::unique_ptr<Response> InternalServer::handle_catalog_v2(const RequestContext
   try {
     url  = request.get_url_part(2);
   } catch (const std::out_of_range&) {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg;
   }
 
@@ -70,7 +70,7 @@ std::unique_ptr<Response> InternalServer::handle_catalog_v2(const RequestContext
   } else if (url == "illustration") {
     return handle_catalog_v2_illustration(request);
   } else {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg;
   }
 }
@@ -112,7 +112,7 @@ std::unique_ptr<Response> InternalServer::handle_catalog_v2_complete_entry(const
   try {
     mp_library->getBookById(entryId);
   } catch (const std::out_of_range&) {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg;
   }
 
@@ -161,7 +161,7 @@ std::unique_ptr<Response> InternalServer::handle_catalog_v2_illustration(const R
     auto illustration = book.getIllustration(size);
     return ContentResponse::build(*this, illustration->getData(), illustration->mimeType);
   } catch(...) {
-    return HTTP404HtmlResponse(*this, request)
+    return HTTP404Response(*this, request)
            + urlNotFoundMsg;
   }
 }

src/server/response.cpp

@@ -146,7 +146,7 @@ std::unique_ptr<ContentResponse> ContentResponseBlueprint::generateResponseObjec
   return r;
 }
 
-HTTPErrorHtmlResponse::HTTPErrorHtmlResponse(const InternalServer& server,
+HTTPErrorResponse::HTTPErrorResponse(const InternalServer& server,
                                      const RequestContext& request,
                                      int httpStatusCode,
                                      const std::string& pageTitleMsgId,
@@ -155,8 +155,8 @@ HTTPErrorHtmlResponse::HTTPErrorHtmlResponse(const InternalServer& server,
   : ContentResponseBlueprint(&server,
                              &request,
                              httpStatusCode,
-                             "text/html; charset=utf-8",
+                             request.get_requested_format() == "html" ? "text/html; charset=utf-8" : "application/xml; charset=utf-8",
-                             RESOURCE::templates::error_html)
+                             request.get_requested_format() == "html" ? RESOURCE::templates::error_html : RESOURCE::templates::error_xml)
 {
   kainjow::mustache::list emptyList;
   this->m_data = kainjow::mustache::object{
@@ -167,9 +167,9 @@ HTTPErrorHtmlResponse::HTTPErrorHtmlResponse(const InternalServer& server,
   };
 }
 
-HTTP404HtmlResponse::HTTP404HtmlResponse(const InternalServer& server,
+HTTP404Response::HTTP404Response(const InternalServer& server,
                                  const RequestContext& request)
-  : HTTPErrorHtmlResponse(server,
+  : HTTPErrorResponse(server,
                       request,
                       MHD_HTTP_NOT_FOUND,
                       "404-page-title",
@@ -177,33 +177,33 @@ HTTP404HtmlResponse::HTTP404HtmlResponse(const InternalServer& server,
 {
 }
 
-HTTPErrorHtmlResponse& HTTP404HtmlResponse::operator+(UrlNotFoundMsg /*unused*/)
+HTTPErrorResponse& HTTP404Response::operator+(UrlNotFoundMsg /*unused*/)
 {
   const std::string requestUrl = m_request.get_full_url();
   return *this + ParameterizedMessage("url-not-found", {{"url", requestUrl}});
 }
 
-HTTPErrorHtmlResponse& HTTPErrorHtmlResponse::operator+(const std::string& msg)
+HTTPErrorResponse& HTTPErrorResponse::operator+(const std::string& msg)
 {
   m_data["details"].push_back({"p", msg});
   return *this;
 }
 
-HTTPErrorHtmlResponse& HTTPErrorHtmlResponse::operator+(const ParameterizedMessage& details)
+HTTPErrorResponse& HTTPErrorResponse::operator+(const ParameterizedMessage& details)
 {
   return *this + details.getText(m_request.get_user_language());
 }
 
-HTTPErrorHtmlResponse& HTTPErrorHtmlResponse::operator+=(const ParameterizedMessage& details)
+HTTPErrorResponse& HTTPErrorResponse::operator+=(const ParameterizedMessage& details)
 {
   // operator+() is already a state-modifying operator (akin to operator+=)
   return *this + details;
 }
 
 
-HTTP400HtmlResponse::HTTP400HtmlResponse(const InternalServer& server,
+HTTP400Response::HTTP400Response(const InternalServer& server,
                                  const RequestContext& request)
-  : HTTPErrorHtmlResponse(server,
+  : HTTPErrorResponse(server,
                       request,
                       MHD_HTTP_BAD_REQUEST,
                       "400-page-title",
@@ -211,7 +211,7 @@ HTTP400HtmlResponse::HTTP400HtmlResponse(const InternalServer& server,
 {
 }
 
-HTTPErrorHtmlResponse& HTTP400HtmlResponse::operator+(InvalidUrlMsg /*unused*/)
+HTTPErrorResponse& HTTP400Response::operator+(InvalidUrlMsg /*unused*/)
 {
   std::string requestUrl = m_request.get_full_url();
   const auto query = m_request.get_query();
@@ -222,9 +222,9 @@ HTTPErrorHtmlResponse& HTTP400HtmlResponse::operator+(InvalidUrlMsg /*unused*/)
   return *this + msgTmpl.render({"url", requestUrl});
 }
 
-HTTP500HtmlResponse::HTTP500HtmlResponse(const InternalServer& server,
+HTTP500Response::HTTP500Response(const InternalServer& server,
                                  const RequestContext& request)
-  : HTTPErrorHtmlResponse(server,
+  : HTTPErrorResponse(server,
                       request,
                       MHD_HTTP_INTERNAL_SERVER_ERROR,
                       "500-page-title",
@@ -234,7 +234,7 @@ HTTP500HtmlResponse::HTTP500HtmlResponse(const InternalServer& server,
   *this + "An internal server error occured. We are sorry about that :/";
 }
 
-std::unique_ptr<ContentResponse> HTTP500HtmlResponse::generateResponseObject() const
+std::unique_ptr<ContentResponse> HTTP500Response::generateResponseObject() const
 {
   // We want a 500 response to be a minimalistic one (so that the server doesn't
   // have to provide additional resources required for its proper rendering)

src/server/response.h

@@ -181,9 +181,9 @@ public: //data
   std::unique_ptr<TaskbarInfo> m_taskbarInfo;
 };
 
-struct HTTPErrorHtmlResponse : ContentResponseBlueprint
+struct HTTPErrorResponse : ContentResponseBlueprint
 {
-  HTTPErrorHtmlResponse(const InternalServer& server,
+  HTTPErrorResponse(const InternalServer& server,
                     const RequestContext& request,
                     int httpStatusCode,
                     const std::string& pageTitleMsgId,
@@ -192,40 +192,40 @@ struct HTTPErrorHtmlResponse : ContentResponseBlueprint
 
   using ContentResponseBlueprint::operator+;
   using ContentResponseBlueprint::operator+=;
-  HTTPErrorHtmlResponse& operator+(const std::string& msg);
+  HTTPErrorResponse& operator+(const std::string& msg);
-  HTTPErrorHtmlResponse& operator+(const ParameterizedMessage& errorDetails);
+  HTTPErrorResponse& operator+(const ParameterizedMessage& errorDetails);
-  HTTPErrorHtmlResponse& operator+=(const ParameterizedMessage& errorDetails);
+  HTTPErrorResponse& operator+=(const ParameterizedMessage& errorDetails);
 };
 
 class UrlNotFoundMsg {};
 
 extern const UrlNotFoundMsg urlNotFoundMsg;
 
-struct HTTP404HtmlResponse : HTTPErrorHtmlResponse
+struct HTTP404Response : HTTPErrorResponse
 {
-  HTTP404HtmlResponse(const InternalServer& server,
+  HTTP404Response(const InternalServer& server,
                   const RequestContext& request);
 
-  using HTTPErrorHtmlResponse::operator+;
+  using HTTPErrorResponse::operator+;
-  HTTPErrorHtmlResponse& operator+(UrlNotFoundMsg /*unused*/);
+  HTTPErrorResponse& operator+(UrlNotFoundMsg /*unused*/);
 };
 
 class InvalidUrlMsg {};
 
 extern const InvalidUrlMsg invalidUrlMsg;
 
-struct HTTP400HtmlResponse : HTTPErrorHtmlResponse
+struct HTTP400Response : HTTPErrorResponse
 {
-  HTTP400HtmlResponse(const InternalServer& server,
+  HTTP400Response(const InternalServer& server,
                   const RequestContext& request);
 
-  using HTTPErrorHtmlResponse::operator+;
+  using HTTPErrorResponse::operator+;
-  HTTPErrorHtmlResponse& operator+(InvalidUrlMsg /*unused*/);
+  HTTPErrorResponse& operator+(InvalidUrlMsg /*unused*/);
 };
 
-struct HTTP500HtmlResponse : HTTPErrorHtmlResponse
+struct HTTP500Response : HTTPErrorResponse
 {
-  HTTP500HtmlResponse(const InternalServer& server,
+  HTTP500Response(const InternalServer& server,
                   const RequestContext& request);
 
 private: // overrides

static/resources_list.txt

@@ -36,6 +36,7 @@ skin/search_results.css
 templates/search_result.html
 templates/search_result.xml
 templates/error.html
+templates/error.xml
 templates/index.html
 templates/suggestion.json
 templates/head_taskbar.html

static/templates/error.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8">
+<error>{{PAGE_TITLE}}</error>
+{{#details}}
+<detail>{{{p}}}</detail>
+{{/details}}