/
WebRenderer.C
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/
WebRenderer.C
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/*
* Copyright (C) 2008 Emweb bvba, Kessel-Lo, Belgium.
*
* See the LICENSE file for terms of use.
*/
#include <boost/lexical_cast.hpp>
#include <boost/algorithm/string.hpp>
#include <map>
#include "Wt/WApplication"
#include "Wt/WContainerWidget"
#include "Wt/WRandom"
#include "Wt/WRegExp"
#include "Wt/WWebWidget"
#include "Wt/WStringStream"
#include "Wt/WTheme"
#include "Wt/Utils"
#include "Configuration.h"
#include "DomElement.h"
#include "EscapeOStream.h"
#include "FileServe.h"
#include "WebController.h"
#include "WebRenderer.h"
#include "WebRequest.h"
#include "WebSession.h"
#include "WebUtils.h"
#ifdef WT_WIN32
#include <process.h> // for getpid()
#ifdef min
#undef min
#endif
#endif
#ifndef WT_TARGET_JAVA
#define DESCRIBE(w) typeid(*(w)).name()
#else
#define DESCRIBE(w) "(fixme)"
#endif
namespace {
bool isAbsoluteUrl(const std::string& url) {
return url.find("://") != std::string::npos;
}
void appendAttribute(Wt::EscapeOStream& eos,
const std::string& name,
const std::string& value) {
eos << ' ' << name << "=\"";
eos.pushEscape(Wt::EscapeOStream::HtmlAttribute);
eos << value;
eos.popEscape();
eos << '"';
}
void closeSpecial(Wt::WStringStream& s) {
s << ">\n";
}
void closeSpecial(Wt::EscapeOStream& s) {
s << ">\n";
}
}
namespace skeletons {
extern const char *Boot_html1;
extern const char *Plain_html1;
extern const char *Hybrid_html1;
extern const char *Wt_js1;
extern const char *Boot_js1;
extern const char *JQuery_js1;
extern std::vector<const char *> JQuery_js();
extern std::vector<const char *> Wt_js();
}
namespace Wt {
LOGGER("WebRenderer");
WebRenderer::CookieValue::CookieValue()
: secure(false)
{ }
WebRenderer::CookieValue::CookieValue(const std::string& v,
const std::string& p,
const std::string& d,
const WDateTime& e,
bool s)
: value(v),
path(p),
domain(d),
expires(e),
secure(s)
{ }
WebRenderer::WebRenderer(WebSession& session)
: session_(session),
visibleOnly_(true),
rendered_(false),
initialStyleRendered_(false),
twoPhaseThreshold_(5000),
pageId_(0),
expectedAckId_(0),
scriptId_(0),
ackErrs_(0),
linkedCssCount_(-1),
currentStatelessSlotIsActuallyStateless_(true),
formObjectsChanged_(true),
updateLayout_(false),
multiSessionCookieUpdateNeeded_(false),
learning_(false)
{ }
void WebRenderer::setRendered(bool how)
{
if (rendered_ != how) {
LOG_DEBUG("setRendered: " << how);
rendered_ = how;
}
}
void WebRenderer::setTwoPhaseThreshold(int bytes)
{
twoPhaseThreshold_ = bytes;
}
void WebRenderer::needUpdate(WWidget *w, bool laterOnly)
{
LOG_DEBUG("needUpdate: " << w->id() << " (" << DESCRIBE(w) << ")");
updateMap_.insert(w);
if (!laterOnly)
moreUpdates_ = true;
}
void WebRenderer::doneUpdate(WWidget *w)
{
LOG_DEBUG("doneUpdate: " << w->id() << " (" << DESCRIBE(w) << ")");
updateMap_.erase(w);
}
bool WebRenderer::isDirty() const
{
return !updateMap_.empty()
|| formObjectsChanged_
|| session_.app()->isQuited()
|| !session_.app()->afterLoadJavaScript_.empty()
|| session_.app()->serverPushChanged_
|| session_.app()->styleSheetsAdded_
|| !session_.app()->styleSheetsToRemove_.empty()
|| session_.app()->styleSheet().isDirty()
|| session_.app()->internalPathIsChanged_
|| !collectedJS1_.empty()
|| !collectedJS2_.empty()
|| !invisibleJS_.empty()
|| !wsRequestsToHandle_.empty()
|| multiSessionCookieUpdateNeeded_;
}
const WebRenderer::FormObjectsMap& WebRenderer::formObjects() const
{
return currentFormObjects_;
}
std::string WebRenderer::bodyClassRtl() const
{
if (session_.app()) {
std::string s = session_.app()->bodyClass_;
if (!s.empty())
s += ' ';
s += session_.app()->layoutDirection() == LeftToRight
? "Wt-ltr" : "Wt-rtl";
session_.app()->bodyHtmlClassChanged_ = false;
return s;
} else
return std::string();
}
void WebRenderer::saveChanges()
{
collectJS(&collectedJS1_);
}
void WebRenderer::discardChanges()
{
collectJS(0);
}
bool WebRenderer::ackUpdate(int updateId)
{
/*
* If we are using an unreliable transport, then we remember
* JavaScript updates until they are ack'ed. This works because
* requests are not pipelined.
*
* WebSocket requests are pipelined so this simple mechanism will
* not work. When switching from web sockets to AJAX or vice-versa ?
*
* If normal AJAX request -> web socket closes. We assume everything
* got delivered and start doing ack updates again.
*
* If web socket request -> we assume last AJAX request got
* delivered ?
*/
LOG_DEBUG("ackUpdate: expecting " << expectedAckId_ << ", received " << updateId);
if (updateId == expectedAckId_) {
LOG_DEBUG("jsSynced(false) after ackUpdate okay");
setJSSynced(false);
ackErrs_ = 0;
return true;
} else if ((updateId < expectedAckId_ && expectedAckId_ - updateId < 5)
|| (expectedAckId_ - 5 < updateId)) {
++ackErrs_;
return ackErrs_ < 3; // That's still acceptible but no longer plausible
} else
return false;
}
void WebRenderer::letReloadJS(WebResponse& response, bool newSession,
bool embedded)
{
if (!embedded) {
setCaching(response, false);
setHeaders(response, "text/javascript; charset=UTF-8");
}
// FIXME: we should foresee something independent of app->javaScriptClass()
response.out() <<
"if (window.Wt) window.Wt._p_.quit(null); window.location.reload(true);";
}
void WebRenderer::letReloadHTML(WebResponse& response, bool newSession)
{
setCaching(response, false);
setHeaders(response, "text/html; charset=UTF-8");
response.out() << "<html><script type=\"text/javascript\">";
letReloadJS(response, newSession, true);
response.out() << "</script><body></body></html>";
}
void WebRenderer::streamRedirectJS(WStringStream& out,
const std::string& redirect)
{
if (session_.app() && session_.app()->internalPathIsChanged_)
out << "if (window." << session_.app()->javaScriptClass() << ") "
<< session_.app()->javaScriptClass()
<< "._p_.setHash("
<< WWebWidget::jsStringLiteral(session_.app()->newInternalPath_)
<< ", false);\n";
out <<
"if (window.location.replace)"
" window.location.replace('" << redirect << "');"
"else"
" window.location.href='" << redirect << "';\n";
}
void WebRenderer::serveResponse(WebResponse& response)
{
session_.setTriggerUpdate(false);
switch (response.responseType()) {
case WebResponse::Update:
serveJavaScriptUpdate(response);
break;
case WebResponse::Page:
initialStyleRendered_ = false;
++pageId_;
if (session_.app())
serveMainpage(response);
else
serveBootstrap(response);
break;
case WebResponse::Script:
bool hybridPage = session_.progressiveBoot() || session_.env().ajax();
if (!hybridPage)
setRendered(false);
serveMainscript(response);
break;
}
}
void WebRenderer::setPageVars(FileServe& page)
{
WApplication *app = session_.app();
page.setVar("DOCTYPE", session_.docType());
std::string htmlAttr;
if (app && !app->htmlClass_.empty()) {
htmlAttr = " class=\"" + app->htmlClass_ + "\"";
}
if (session_.env().agentIsIE())
page.setVar("HTMLATTRIBUTES",
"xmlns:v=\"urn:schemas-microsoft-com:vml\""
" lang=\"en\" dir=\"ltr\"" + htmlAttr);
else
page.setVar("HTMLATTRIBUTES", "lang=\"en\" dir=\"ltr\"" + htmlAttr);
page.setVar("METACLOSE", ">");
std::string attr = bodyClassRtl();
if (!attr.empty())
attr = " class=\"" + attr + "\"";
if (app && app->layoutDirection() == RightToLeft)
attr += " dir=\"RTL\"";
page.setVar("BODYATTRIBUTES", attr);
page.setVar("HEADDECLARATIONS", headDeclarations());
page.setCondition("FORM", !session_.env().agentIsSpiderBot()
&& !session_.env().ajax());
page.setCondition("BOOT_STYLE", true);
}
void WebRenderer::streamBootContent(WebResponse& response,
FileServe& boot, bool hybrid)
{
Configuration& conf = session_.controller()->configuration();
WStringStream out(response.out());
FileServe bootJs(skeletons::Boot_js1);
boot.setVar("BLANK_HTML",
session_.bootstrapUrl(response, WebSession::ClearInternalPath)
+ "&request=resource&resource=blank");
boot.setVar("SESSION_ID", session_.sessionId());
//TODO remove APP_CLASS, will later only be used in the javascript
boot.setVar("APP_CLASS", "Wt");
bootJs.setVar("SELF_URL",
safeJsStringLiteral
(session_.bootstrapUrl(response,
WebSession::ClearInternalPath)));
bootJs.setVar("SESSION_ID", session_.sessionId());
expectedAckId_ = scriptId_ = WRandom::get();
ackErrs_ = 0;
bootJs.setVar("SCRIPT_ID", scriptId_);
bootJs.setVar("RANDOMSEED", WRandom::get());
bootJs.setVar("RELOAD_IS_NEWSESSION", conf.reloadIsNewSession());
bootJs.setVar("USE_COOKIES",
conf.sessionTracking() == Configuration::CookiesURL);
bootJs.setVar("AJAX_CANONICAL_URL",
safeJsStringLiteral(session_.ajaxCanonicalUrl(response)));
bootJs.setVar("APP_CLASS", "Wt");
bootJs.setVar("PATH_INFO", safeJsStringLiteral
(session_.pagePathInfo_));
bootJs.setCondition("COOKIE_CHECKS", conf.cookieChecks());
bootJs.setCondition("SPLIT_SCRIPT", conf.splitScript());
bootJs.setCondition("HYBRID", hybrid);
bootJs.setCondition("PROGRESS", hybrid && !session_.env().ajax());
bootJs.setCondition("DEFER_SCRIPT", true);
bootJs.setCondition("WEBGL_DETECT", conf.webglDetect());
std::string internalPath
= hybrid ? session_.app()->internalPath() : session_.env().internalPath();
bootJs.setVar("INTERNAL_PATH", safeJsStringLiteral(internalPath));
boot.streamUntil(out, "BOOT_JS");
bootJs.stream(out);
out.spool(response.out());
}
void WebRenderer::serveLinkedCss(WebResponse& response)
{
response.setContentType("text/css");
if (!initialStyleRendered_) {
WApplication *app = session_.app();
WStringStream out(response.out());
if (app->theme())
app->theme()->serveCss(out);
for (unsigned i = 0; i < app->styleSheets_.size(); ++i)
app->styleSheets_[i].cssText(out, true);
app->styleSheetsAdded_ = 0;
initialStyleRendered_ = true;
linkedCssCount_ = app->styleSheets_.size();
out.spool(response.out());
} else if (linkedCssCount_ > -1) {
/*
* Make sure we serve the same response again, since a 'GET' must be
*idempotent. This is used by e.g. browser-side tools like 'usersnap'
*/
WApplication *app = session_.app();
WStringStream out(response.out());
if (app->theme())
app->theme()->serveCss(out);
unsigned count
= std::min((std::size_t)linkedCssCount_, app->styleSheets_.size());
for (unsigned i = 0; i < count; ++i)
app->styleSheets_[i].cssText(out, true);
out.spool(response.out());
}
}
void WebRenderer::serveBootstrap(WebResponse& response)
{
Configuration& conf = session_.controller()->configuration();
FileServe boot(skeletons::Boot_html1);
setPageVars(boot);
WStringStream noJsRedirectUrl;
DomElement::htmlAttributeValue
(noJsRedirectUrl,
session_.bootstrapUrl(response, WebSession::KeepInternalPath) + "&js=no");
boot.setVar("REDIRECT_URL", noJsRedirectUrl.str());
boot.setVar("AUTO_REDIRECT",
"<noscript><meta http-equiv=\"refresh\" content=\"0; url="
+ noJsRedirectUrl.str() + "\"></noscript>");
boot.setVar("NOSCRIPT_TEXT", conf.redirectMessage());
WStringStream bootStyleUrl;
DomElement::htmlAttributeValue
(bootStyleUrl,
session_.bootstrapUrl(response, WebSession::ClearInternalPath)
+ "&request=style&page="
+ boost::lexical_cast<std::string>(pageId_));
boot.setVar("BOOT_STYLE_URL", bootStyleUrl.str());
setCaching(response, false);
std::string contentType = "text/html; charset=UTF-8";
setHeaders(response, contentType);
WStringStream out(response.out());
streamBootContent(response, boot, false);
boot.stream(out);
setRendered(false);
out.spool(response.out());
}
void WebRenderer::serveError(int status, WebResponse& response,
const std::string& message)
{
bool js = response.responseType() != WebResponse::Page;
WApplication *app = session_.app();
if (!js || !app) {
response.setStatus(status);
response.setContentType("text/html");
response.out()
<< "<title>Error occurred.</title>"
<< "<h2>Error occurred.</h2>"
<< WWebWidget::escapeText(WString(message), true).toUTF8()
<< '\n';
} else {
response.out() << app->javaScriptClass()
<< "._p_.quit(null);"
<< "document.title = 'Error occurred.';"
<< "document.body.innerHtml='<h2>Error occurred.</h2>' +"
<< WWebWidget::jsStringLiteral(message)
<< ';';
}
}
void WebRenderer::setCookie(const std::string name, const std::string value,
const WDateTime& expires,
const std::string domain, const std::string path,
bool secure)
{
cookiesToSet_[name] = CookieValue(value, path, domain, expires, secure);
}
void WebRenderer::setCaching(WebResponse& response, bool allowCache)
{
if (allowCache)
response.addHeader("Cache-Control", "max-age=2592000,private");
else {
response.addHeader("Cache-Control", "no-cache, no-store, must-revalidate");
response.addHeader("Pragma", "no-cache");
response.addHeader("Expires", "0");
}
}
void WebRenderer::setHeaders(WebResponse& response, const std::string mimeType)
{
for (std::map<std::string, CookieValue>::const_iterator
i = cookiesToSet_.begin(); i != cookiesToSet_.end(); ++i) {
const CookieValue& cookie = i->second;
WStringStream header;
std::string value = cookie.value;
if (value.empty())
value = "deleted";
header << Utils::urlEncode(i->first) << '=' << Utils::urlEncode(value)
<< "; Version=1;";
if (!cookie.expires.isNull()) {
#ifndef WT_TARGET_JAVA
std::string formatString = "ddd, dd-MMM-yyyy hh:mm:ss 'GMT'";
#else
std::string formatString = "EEE, dd-MMM-yyyy HH:mm:ss 'GMT'";
#endif
std::string d
= cookie.expires.toString
(WString::fromUTF8(formatString), false).toUTF8();
header << "Expires=" << d << ';';
}
if (!cookie.domain.empty())
header << " Domain=" << cookie.domain << ';';
if (cookie.path.empty())
header << " Path=" << session_.env().deploymentPath() << ';';
else
header << " Path=" << cookie.path << ';';
// a httponly cookie cannot be set using JavaScript
if (!response.isWebSocketMessage())
header << " httponly;";
if (cookie.secure)
header << " secure;";
response.addHeader("Set-Cookie", header.str());
}
cookiesToSet_.clear();
#ifndef WT_TARGET_JAVA
const WServer *s = session_.controller()->server();
if (s->dedicatedSessionProcess()) {
response.addHeader("X-Wt-Session", session_.sessionId());
}
#endif // WT_TARGET_JAVA
response.setContentType(mimeType);
}
void WebRenderer::renderSetServerPush(WStringStream& out)
{
if (session_.app()->serverPushChanged_) {
out << session_.app()->javaScriptClass()
<< "._p_.setServerPush("
<< session_.app()->updatesEnabled()
<< ");";
session_.app()->serverPushChanged_ = false;
}
}
std::string WebRenderer::sessionUrl() const
{
std::string result = session_.applicationUrl();
if (isAbsoluteUrl(result))
return session_.appendSessionQuery(result);
else {
// Wt.js will prepand the correct deployment path
return session_.appendSessionQuery(".").substr(1);
}
}
void WebRenderer::serveJavaScriptUpdate(WebResponse& response)
{
setCaching(response, false);
setHeaders(response, "text/javascript; charset=UTF-8");
if (session_.sessionIdChanged_) {
collectedJS1_ << session_.app()->javaScriptClass()
<< "._p_.setSessionUrl("
<< WWebWidget::jsStringLiteral(sessionUrl())
<< ");";
}
WStringStream out(response.out());
if (!rendered_) {
serveMainAjax(out);
} else {
collectJavaScript();
addResponseAckPuzzle(out);
renderSetServerPush(out);
LOG_DEBUG("js: " << collectedJS1_.str() << collectedJS2_.str());
out << collectedJS1_.str() << collectedJS2_.str();
if (response.isWebSocketMessage()) {
renderMultiSessionCookieUpdate(out);
renderWsRequestsDone(out);
LOG_DEBUG("jsSynced(false) after rendering websocket message");
setJSSynced(false);
}
}
out.spool(response.out());
}
void WebRenderer::renderWsRequestsDone(WStringStream &out)
{
if (!wsRequestsToHandle_.empty()) {
out << session_.app()->javaScriptClass()
<< "._p_.wsRqsDone(";
for (std::size_t i = 0; i < wsRequestsToHandle_.size(); ++i) {
if (i != 0)
out << ',';
out << wsRequestsToHandle_[i];
}
out << ");";
wsRequestsToHandle_.clear();
}
}
void WebRenderer::updateMultiSessionCookie(const WebRequest &request)
{
Configuration &conf = session_.controller()->configuration();
setCookie("ms" + request.scriptName(),
session_.multiSessionId(),
WDateTime::currentDateTime().addSecs(conf.sessionTimeout()),
"", session_.env().deploymentPath(),
session_.env().urlScheme() == "https");
}
void WebRenderer::renderMultiSessionCookieUpdate(WStringStream &out)
{
if (multiSessionCookieUpdateNeeded_) {
out << session_.app()->javaScriptClass()
<< "._p_.refreshCookie();";
multiSessionCookieUpdateNeeded_ = false;
}
}
void WebRenderer::addContainerWidgets(WWebWidget *w,
std::vector<WContainerWidget *>& result)
{
for (unsigned i = 0; i < w->children().size(); ++i) {
WWidget *c = w->children()[i];
if (!c->isRendered())
return;
if (!c->isHidden())
addContainerWidgets(c->webWidget(), result);
WContainerWidget *wc = dynamic_cast<WContainerWidget *>(c);
if (wc)
result.push_back(wc);
}
}
void WebRenderer::addResponseAckPuzzle(WStringStream& out)
{
std::string puzzle;
Configuration& conf = session_.controller()->configuration();
if (conf.ajaxPuzzle() && expectedAckId_ == scriptId_) {
/*
* We need to pick a random WContainerWidget. Let's be dumb for now.
*/
std::vector<WContainerWidget *> widgets;
WApplication *app = session_.app();
addContainerWidgets(app->domRoot_, widgets);
if (app->domRoot2_)
addContainerWidgets(app->domRoot2_, widgets);
unsigned r = WRandom::get() % widgets.size();
WContainerWidget *wc = widgets[r];
puzzle = '"' + wc->id() + '"';
std::string l;
for (WWidget *w = wc->parent(); w; w = w->parent()) {
if (w->id().empty())
continue;
if (w->id() == l)
continue;
l = w->id();
if (!solution_.empty())
solution_ += ',';
solution_ += l;
}
}
/*
* Passing the expectedAckId_ within the collectedJS1_ +
* collectedJS2_ risks of inflating responses when a script loading
* is blocked. The purpose of the ackId is to detect what has been
* succesfully transmitted (mostly in the presence of server push
* which can cancel ajax requests. Therefore we chose here to use
* the ackIds_ only to signal proper ajax transfers, and thus at the
* end of the request transfer.
*
* It does present us with another probem: what if e.g. an ExtJS
* library is still loading and we already update one of its widgets
* assuming it has been rendered ? This should be handled
* client-side: only when libraries have been loaded, the application can
* continue. TO BE DONE.
*/
++expectedAckId_;
LOG_DEBUG("addResponseAckPuzzle: incremented expectedAckId to " << expectedAckId_);
out << session_.app()->javaScriptClass()
<< "._p_.response(" << expectedAckId_;
if (!puzzle.empty())
out << "," << puzzle;
out << ");";
}
bool WebRenderer::checkResponsePuzzle(const WebRequest& request)
{
if (!solution_.empty()) {
const std::string *ackPuzzleE = request.getParameter("ackPuzzle");
if (!ackPuzzleE) {
LOG_SECURE("Ajax puzzle fail: solution missing");
return false;
}
std::string ackPuzzle = *ackPuzzleE;
Utils::SplitVector answer, solution;
boost::split(solution, solution_, boost::is_any_of(","));
boost::split(answer, ackPuzzle, boost::is_any_of(","));
unsigned j = 0;
bool fail = false;
for (unsigned i = 0; i < solution.size(); ++i) {
for (; j < answer.size(); ++j) {
if (solution[i] == answer[j])
break;
else {
/* Verify that answer[j] is not a valid widget id */
}
}
if (j == answer.size()) {
fail = true;
break;
}
}
if (j < answer.size() - 1)
fail = true;
if (fail) {
LOG_SECURE("Ajax puzzle fail: '" << ackPuzzle << "' vs '"
<< solution_ << '\'');
solution_.clear();
return false;
} else {
solution_.clear();
return true;
}
} else
return true;
}
void WebRenderer::collectJavaScript()
{
WApplication *app = session_.app();
Configuration& conf = session_.controller()->configuration();
/*
* Pending invisible changes are also collected into JS1. This is
* also done in ackUpdate(), but just in case an update was not
* acknowledged.
*
* This is also used to render JavaScript that was rendered in asHtml()
* in a hybrid page.
*/
LOG_DEBUG("Rendering invisible: " << invisibleJS_.str());
collectedJS1_ << invisibleJS_.str();
invisibleJS_.clear();
if (conf.inlineCss())
app->styleSheet().javaScriptUpdate(app, collectedJS1_, false);
loadStyleSheets(collectedJS1_, app);
if (app->bodyHtmlClassChanged_) {
bool widgetset = session_.type() == WidgetSet;
std::string op = widgetset ? "+=" : "=";
collectedJS1_ << "document.body.parentNode.className" << op << '\''
<< app->htmlClass_ << "';"
<< "document.body.className" << op << '\'' << bodyClassRtl() << "';"
<< "document.body.setAttribute('dir', '";
if (app->layoutDirection() == LeftToRight)
collectedJS1_ << "LTR";
else
collectedJS1_ << "RTL";
collectedJS1_ << "');";
}
/*
* This opens scopes, waiting for new libraries to be loaded.
*/
int librariesLoaded = loadScriptLibraries(collectedJS1_, app);
/*
* This closes the same scopes.
*/
loadScriptLibraries(collectedJS2_, app, librariesLoaded);
/*
* Everything else happens inside JS1: after libraries have been loaded.
*/
app->streamBeforeLoadJavaScript(collectedJS1_, false);
if (app->domRoot2_)
app->domRoot2_->rootAsJavaScript(app, collectedJS1_, false);
collectJavaScriptUpdate(collectedJS1_);
if (visibleOnly_) {
bool needFetchInvisible = false;
if (!updateMap_.empty()) {
needFetchInvisible = true;
if (twoPhaseThreshold_ > 0) {
/*
* See how large the invisible changes are, perhaps we can
* send them along
*/
visibleOnly_ = false;
collectJavaScriptUpdate(invisibleJS_);
if (invisibleJS_.length() < (unsigned)twoPhaseThreshold_) {
collectedJS1_ << invisibleJS_.str();
invisibleJS_.clear();
needFetchInvisible = false;
}
visibleOnly_ = true;
}
}
if (needFetchInvisible)
collectedJS1_ << app->javaScriptClass()
<< "._p_.update(null, 'none', null, false);";
}
if (app->autoJavaScriptChanged_) {
collectedJS1_ << app->javaScriptClass()
<< "._p_.autoJavaScript=function(){"
<< app->autoJavaScript_ << "};";
app->autoJavaScriptChanged_ = false;
}
visibleOnly_ = true;
app->domRoot_->doneRerender();
if (app->domRoot2_)
app->domRoot2_->doneRerender();
std::string redirect = session_.getRedirect();
if (!redirect.empty())
streamRedirectJS(collectedJS1_, redirect);
}
void WebRenderer::serveMainscript(WebResponse& response)
{
/*
* Serving a script is using a GET request, which can be replayed.
* Therefore we need to either be able to reconstruct the response
* (possible if !rendered_), or we need to save the response in
* collectedJS variables.
*/
Configuration& conf = session_.controller()->configuration();
bool widgetset = session_.type() == WidgetSet;
bool serveSkeletons = !conf.splitScript()
|| response.getParameter("skeleton");
bool serveRest = !conf.splitScript() || !serveSkeletons;
session_.sessionIdChanged_ = false;
setCaching(response, conf.splitScript() && serveSkeletons);
setHeaders(response, "text/javascript; charset=UTF-8");
WStringStream out(response.out());
if (!widgetset) {
// FIXME: this cannot be replayed
std::string redirect = session_.getRedirect();
if (!redirect.empty()) {
streamRedirectJS(out, redirect);
return;
}
} else {
expectedAckId_ = scriptId_ = WRandom::get();
ackErrs_ = 0;
}
WApplication *app = session_.app();
const bool innerHtml = true;
if (serveSkeletons) {
bool haveJQuery = app->customJQuery();
if (!haveJQuery) {
out << "if (typeof window.$ === 'undefined') {";
#ifndef WT_TARGET_JAVA
std::vector<const char *> parts = skeletons::JQuery_js();
for (std::size_t i = 0; i < parts.size(); ++i)
out << const_cast<char *>(parts[i]);
#else
out << const_cast<char *>(skeletons::JQuery_js1);
#endif
out << '}';
}
#ifndef WT_TARGET_JAVA
std::vector<const char *> parts = skeletons::Wt_js();
#else
std::vector<const char *> parts = std::vector<const char *>();
#endif
std::string Wt_js_combined;
if (parts.size() > 1)
for (std::size_t i = 0; i < parts.size(); ++i)
Wt_js_combined += parts[i];
FileServe script(parts.size() > 1
? Wt_js_combined.c_str() : skeletons::Wt_js1);
script.setCondition
("CATCH_ERROR", conf.errorReporting() != Configuration::NoErrors);
script.setCondition
("SHOW_ERROR", conf.errorReporting() == Configuration::ErrorMessage);
script.setCondition
("UGLY_INTERNAL_PATHS", session_.useUglyInternalPaths());
#ifdef WT_DEBUG_JS
script.setCondition("DYNAMIC_JS", true);
#else
script.setCondition("DYNAMIC_JS", false);
#endif // WT_DEBUG_JS
script.setVar("WT_CLASS", WT_CLASS);
script.setVar("APP_CLASS", app->javaScriptClass());
script.setCondition("STRICTLY_SERIALIZED_EVENTS", conf.serializedEvents());
script.setCondition("WEB_SOCKETS", conf.webSockets());
script.setVar("INNER_HTML", innerHtml);
script.setVar("ACK_UPDATE_ID", expectedAckId_);
script.setVar("SESSION_URL", WWebWidget::jsStringLiteral(sessionUrl()));
script.setVar("QUITTED_STR",
WString::tr("Wt.QuittedMessage").jsStringLiteral());
std::string deployPath = session_.env().publicDeploymentPath_;
if (deployPath.empty())
deployPath = session_.deploymentPath();
script.setVar("DEPLOY_PATH", WWebWidget::jsStringLiteral(deployPath));
// WS_PATH = DEPLOY_PATH for C++, = CONTEXT_PATH for Java = request.contextPath()