Variant ThisExpression::set(VariableEnvironment &env, CVarRef val) const {
throw FatalErrorException("Cannot re-assign $this");
}
CVarRef ArrayData::endRef() {
if (size_t(m_pos) < size_t(size())) {
return getValueRef(size() - 1);
}
throw FatalErrorException("invalid ArrayData::m_pos");
}
void ArrayData::uasort(CVarRef cmp_function) {
throw FatalErrorException("Unimplemented ArrayData::uasort");
}
OutputFile::OutputFile(const String& filename): File(true, s_php, s_output) {
if (filename != s_php_output) {
throw FatalErrorException("not a php://output file ");
}
m_isLocal = true;
}
ArrayData *ArrayData::nonSmartCopy() const {
throw FatalErrorException("nonSmartCopy not implemented.");
}
CVarRef ArrayData::endRef() {
if (m_pos != invalid_index) {
return getValueRef(iter_end());
}
throw FatalErrorException("invalid ArrayData::m_pos");
}
void ArrayData::ZSetStr(ArrayData* ad, StringData* k, RefData* v) {
throw FatalErrorException("Unimplemented ArrayData::ZSetStr");
}
ObjectData *FrameInjectionFunction::getThisForArrow() {
if (ObjectData *obj = getThis()) {
return obj;
}
throw FatalErrorException("Using $this when not in object context");
}
ObjectData *FrameInjectionObjectMethod::getThisForArrow() {
if (m_object->o_getId()) {
return m_object;
}
throw FatalErrorException("Using $this when not in object context");
}
int64 MemFile::writeImpl(const char *buffer, int64 length) {
throw FatalErrorException((string("cannot write a mem stream: ") +
m_name).c_str());
}
bool MemFile::flush() {
throw FatalErrorException((string("cannot flush a mem stream: ") +
m_name).c_str());
}
void AsioContext::runUntil(c_WaitableWaitHandle* wait_handle) {
assert(wait_handle);
assert(wait_handle->getContext() == this);
auto session = AsioSession::Get();
auto ete_queue = session->getExternalThreadEventQueue();
if (!session->hasAbruptInterruptException()) {
session->initAbruptInterruptException();
}
while (!wait_handle->isFinished()) {
// Run queue of ready async functions once.
if (!m_runnableQueue.empty()) {
auto current = m_runnableQueue.back();
m_runnableQueue.pop_back();
current->resume();
continue;
}
// Process all sleep handles that have completed their sleep.
if (session->processSleepEvents()) {
continue;
}
// Process all external thread events that have completed their operation.
// Queue may contain received unprocessed events from failed runUntil().
if (UNLIKELY(ete_queue->hasReceived()) || ete_queue->tryReceiveSome()) {
ete_queue->processAllReceived();
continue;
}
// Run default priority queue once.
if (runSingle(m_priorityQueueDefault)) {
continue;
}
// Wait for pending external thread events...
if (!m_externalThreadEvents.empty()) {
// ...but only until the next sleeper (from any context) finishes.
auto waketime = session->sleepWakeTime();
// Wait if necessary.
if (LIKELY(!ete_queue->hasReceived())) {
onIOWaitEnter(session);
ete_queue->receiveSomeUntil(waketime);
onIOWaitExit(session);
}
if (ete_queue->hasReceived()) {
// Either we didn't have to wait, or we waited but no sleeper timed us
// out, so just handle the ETEs.
ete_queue->processAllReceived();
} else {
// No received events means the next-to-wake sleeper timed us out.
session->processSleepEvents();
}
continue;
}
// If we're here, then the only things left are sleepers. Wait for one to
// be ready (in any context).
if (!m_sleepEvents.empty()) {
onIOWaitEnter(session);
std::this_thread::sleep_until(session->sleepWakeTime());
onIOWaitExit(session);
session->processSleepEvents();
continue;
}
// Run no-pending-io priority queue once.
if (runSingle(m_priorityQueueNoPendingIO)) {
continue;
}
// What? The wait handle did not finish? We know it is part of the current
// context and since there is nothing else to run, it cannot be in RUNNING
// or SCHEDULED state. So it must be BLOCKED on something. Apparently, the
// same logic can be used recursively on the something, so there is an
// infinite chain of blocked wait handles. But our memory is not infinite.
// What could it possibly mean? I think we are in a deep sh^H^Hcycle.
// But we can't, the cycles are detected and avoided at blockOn() time.
// So, looks like it's not cycle, but the word I started typing first.
assert(false);
throw FatalErrorException(
"Invariant violation: queues are empty, but wait handle did not finish");
}
}
void AsioContext::runUntil(c_WaitableWaitHandle* wait_handle) {
assert(!m_current);
assert(wait_handle);
assert(wait_handle->getContext() == this);
auto session = AsioSession::Get();
uint8_t check_ete_counter = 0;
while (!wait_handle->isFinished()) {
// process ready external thread events once per 256 other events
// (when 8-bit check_ete_counter overflows)
if (!++check_ete_counter) {
auto ete_wh = session->getReadyExternalThreadEvents();
while (ete_wh) {
auto next_wh = ete_wh->getNextToProcess();
ete_wh->process();
ete_wh = next_wh;
}
}
// run queue of ready continuations once
if (!m_runnableQueue.empty()) {
auto current = m_runnableQueue.front();
m_runnableQueue.pop();
m_current = current;
m_current->run();
m_current = nullptr;
decRefObj(current);
continue;
}
// run default priority queue once
if (runSingle(m_priorityQueueDefault)) {
continue;
}
// pending external thread events? wait for at least one to become ready
if (!m_externalThreadEvents.empty()) {
// all your wait time are belong to us
auto ete_wh = session->waitForExternalThreadEvents();
while (ete_wh) {
auto next_wh = ete_wh->getNextToProcess();
ete_wh->process();
ete_wh = next_wh;
}
continue;
}
// run no-pending-io priority queue once
if (runSingle(m_priorityQueueNoPendingIO)) {
continue;
}
// What? The wait handle did not finish? We know it is part of the current
// context and since there is nothing else to run, it cannot be in RUNNING
// or SCHEDULED state. So it must be BLOCKED on something. Apparently, the
// same logic can be used recursively on the something, so there is an
// infinite chain of blocked wait handles. But our memory is not infinite.
// What could it possibly mean? I think we are in a deep sh^H^Hcycle.
// But we can't, the cycles are detected and avoided at blockOn() time.
// So, looks like it's not cycle, but the word I started typing first.
assert(false);
throw FatalErrorException(
"Invariant violation: queues are empty, but wait handle did not finish");
}
}
bool FunctionCallExpression::exist(VariableEnvironment &env, int op) const {
throw FatalErrorException(0, "Cannot call %s on a function return value",
op == T_ISSET ? "isset" : "empty");
}
CVarRef NameValueTableWrapper::currentRef() {
if (m_pos != ArrayData::invalid_index) {
return getValueRef(m_pos);
}
throw FatalErrorException("invalid ArrayData::m_pos");
}
bool TempFile::open(const String& filename, const String& mode) {
throw FatalErrorException((std::string("cannot open a temp file ") +
m_name).c_str());
}
void c_ContinuationWaitHandle::run() {
// may happen if scheduled in multiple contexts
if (getState() != STATE_SCHEDULED) {
return;
}
try {
setState(STATE_RUNNING);
do {
// iterate continuation
if (m_child.isNull()) {
// first iteration or null dependency
m_continuation->call_next();
} else if (m_child->isSucceeded()) {
// child succeeded, pass the result to the continuation
m_continuation->call_send(m_child->getResult());
} else if (m_child->isFailed()) {
// child failed, raise the exception inside continuation
m_continuation->call_raise(m_child->getException());
} else {
throw FatalErrorException(
"Invariant violation: child neither succeeded nor failed");
}
// continuation finished, retrieve result from its m_value
if (m_continuation->m_done) {
markAsSucceeded(m_continuation->m_value.asTypedValue());
return;
}
// set up dependency
TypedValue* value = m_continuation->m_value.asTypedValue();
if (IS_NULL_TYPE(value->m_type)) {
// null dependency
m_child = nullptr;
} else {
c_WaitHandle* child = c_WaitHandle::fromTypedValue(value);
if (UNLIKELY(!child)) {
Object e(SystemLib::AllocInvalidArgumentExceptionObject(
"Expected yield argument to be an instance of WaitHandle"));
throw e;
}
AsioSession* session = AsioSession::Get();
if (UNLIKELY(session->hasOnContinuationYieldCallback())) {
session->onContinuationYield(this, child);
}
m_child = child;
}
} while (m_child.isNull() || m_child->isFinished());
// we are blocked on m_child so it must be WaitableWaitHandle
assert(dynamic_cast<c_WaitableWaitHandle*>(m_child.get()));
blockOn(static_cast<c_WaitableWaitHandle*>(m_child.get()));
} catch (const Object& exception) {
// process exception thrown by generator or blockOn cycle detection
markAsFailed(exception);
}
}
Variant f_func_get_arg(int arg_num) {
throw FatalErrorException("bad HPHP code generation");
}
void ArrayData::ZSetInt(ArrayData* ad, int64_t k, RefData* v) {
throw FatalErrorException("Unimplemented ArrayData::ZSetInt");
}
Array f_func_get_args() {
throw FatalErrorException("bad HPHP code generation");
}
void ArrayData::ZAppend(ArrayData* ad, RefData* v) {
throw FatalErrorException("Unimplemented ArrayData::ZAppend");
}
void Expression::byteCodeRefval(ByteCodeProgram &code) const {
throw FatalErrorException("Cannot compile %s:%d", m_loc.file, m_loc.line1);
}
bool OutputFile::open(const String& filename, const String& mode) {
throw FatalErrorException("cannot open a php://output file ");
}
void StringData::append(const char *s, int len) {
ASSERT(!isStatic()); // never mess around with static strings!
if (len == 0) return;
if (UNLIKELY(uint32_t(len) > MaxSize)) {
throw InvalidArgumentException("len>=2^30", len);
}
if (UNLIKELY(len + m_len > MaxSize)) {
throw FatalErrorException(0, "String length exceeded 2^30 - 1: %u",
len + m_len);
}
int newlen;
// TODO: t1122987: in any of the cases below where we need a bigger buffer,
// we can probably assume we're in a concat-loop and pick a good buffer
// size to avoid O(N^2) copying cost.
if (isShared() || isLiteral()) {
// buffer is immutable, don't modify it.
// We are mutating, so we don't need to repropagate our own taint
StringSlice r = slice();
char* newdata = string_concat(r.ptr, r.len, s, len, newlen);
if (isShared()) m_big.shared->decRef();
m_len = newlen;
m_data = newdata;
m_big.cap = newlen | IsMalloc;
m_hash = 0;
} else if (rawdata() == s) {
// appending ourself to ourself, be conservative.
// We are mutating, so we don't need to repropagate our own taint
StringSlice r = slice();
char *newdata = string_concat(r.ptr, r.len, s, len, newlen);
releaseData();
m_len = newlen;
m_data = newdata;
m_big.cap = newlen | IsMalloc;
m_hash = 0;
} else if (isSmall()) {
// we're currently small but might not be after append.
// We are mutating, so we don't need to repropagate our own taint
int oldlen = m_len;
newlen = oldlen + len;
if (unsigned(newlen) <= MaxSmallSize) {
// win.
memcpy(&m_small[oldlen], s, len);
m_small[newlen] = 0;
m_small[MaxSmallSize] = 0;
m_len = newlen;
m_data = m_small;
m_hash = 0;
} else {
// small->big string transition.
char *newdata = string_concat(m_small, oldlen, s, len, newlen);
m_len = newlen;
m_data = newdata;
m_big.cap = newlen | IsMalloc;
m_hash = 0;
}
} else {
// generic "big string concat" path. realloc buffer.
int oldlen = m_len;
char* oldp = m_data;
ASSERT((oldp > s && oldp - s > len) ||
(oldp < s && s - oldp > oldlen)); // no overlapping
newlen = oldlen + len;
char* newdata = (char*) realloc(oldp, newlen + 1);
memcpy(newdata + oldlen, s, len);
newdata[newlen] = 0;
m_len = newlen;
m_data = newdata;
m_big.cap = newlen | IsMalloc;
m_hash = 0;
}
ASSERT(uint32_t(newlen) <= MaxSize);
TAINT_OBSERVER_REGISTER_MUTATED(m_taint_data, rawdata());
ASSERT(checkSane());
}
ArrayData *ArrayData::lvalPtr(StringData* k, Variant *&ret, bool copy,
bool create) {
throw FatalErrorException("Unimplemented ArrayData::lvalPtr");
}
ArrayData*
GlobalsArray::CopyWithStrongIterators(const ArrayData* ad) {
throw FatalErrorException(
"Unimplemented ArrayData::copyWithStrongIterators");
}
void ArrayData::asort(int sort_flags, bool ascending) {
throw FatalErrorException("Unimplemented ArrayData::asort");
}
ArrayData* GlobalsArray::CopyStatic(const ArrayData*) {
throw FatalErrorException("GlobalsArray::copyStatic "
"not implemented.");
}
ArrayData* ArrayData::copyWithStrongIterators() const {
throw FatalErrorException("Unimplemented ArrayData::copyWithStrongIterators");
}
void HttpRequestHandler::handleRequest(Transport *transport) {
ExecutionProfiler ep(ThreadInfo::RuntimeFunctions);
Logger::OnNewRequest();
GetAccessLog().onNewRequest();
transport->enableCompression();
ServerStatsHelper ssh("all", true);
Logger::Verbose("receiving %s", transport->getCommand().c_str());
// will clear all extra logging when this function goes out of scope
StackTraceNoHeap::ExtraLoggingClearer clearer;
StackTraceNoHeap::AddExtraLogging("URL", transport->getUrl());
// resolve virtual host
const VirtualHost *vhost = HttpProtocol::GetVirtualHost(transport);
ASSERT(vhost);
if (vhost->disabled() ||
vhost->isBlocking(transport->getCommand(), transport->getRemoteHost())) {
transport->sendString("Not Found", 404);
return;
}
ServerStats::StartRequest(transport->getCommand().c_str(),
transport->getRemoteHost(),
vhost->getName().c_str());
// resolve source root
string host = transport->getHeader("Host");
SourceRootInfo sourceRootInfo(host.c_str());
if (sourceRootInfo.error()) {
sourceRootInfo.handleError(transport);
return;
}
// request URI
string pathTranslation = m_pathTranslation ?
vhost->getPathTranslation().c_str() : "";
RequestURI reqURI(vhost, transport, sourceRootInfo.path(), pathTranslation);
if (reqURI.done()) {
return; // already handled with redirection or 404
}
string path = reqURI.path().data();
string absPath = reqURI.absolutePath().data();
// determine whether we should compress response
bool compressed = transport->decideCompression();
const char *data; int len;
size_t pos = path.rfind('.');
const char *ext =
(pos != string::npos) &&
path.find('/', pos) == string::npos // no extention in ./foo or ../bar
? (path.c_str() + pos + 1) : NULL;
bool cachableDynamicContent =
(!RuntimeOption::StaticFileGenerators.empty() &&
RuntimeOption::StaticFileGenerators.find(path) !=
RuntimeOption::StaticFileGenerators.end());
// If this is not a php file, check the static and dynamic content caches
if (ext && strcasecmp(ext, "php") != 0) {
if (RuntimeOption::EnableStaticContentCache) {
bool original = compressed;
// check against static content cache
if (StaticContentCache::TheCache.find(path, data, len, compressed)) {
struct stat st;
st.st_mtime = 0;
String str;
// (qigao) not calling stat at this point because the timestamp of
// local cache file is not valuable, maybe misleading. This way
// the Last-Modified header will not show in response.
// stat(RuntimeOption::FileCache.c_str(), &st);
if (!original && compressed) {
data = gzdecode(data, len);
if (data == NULL) {
throw FatalErrorException("cannot unzip compressed data");
}
compressed = false;
str = NEW(StringData)(data, len, AttachString);
}
sendStaticContent(transport, data, len, st.st_mtime, compressed, path);
StaticContentCache::TheFileCache->adviseOutMemory();
ServerStats::LogPage(path, 200);
return;
}
}
if (RuntimeOption::EnableStaticContentFromDisk) {
String translated = File::TranslatePath(String(absPath));
if (!translated.empty()) {
StringBuffer sb(translated.data());
if (sb.valid()) {
struct stat st;
st.st_mtime = 0;
stat(translated.data(), &st);
sendStaticContent(transport, sb.data(), sb.size(), st.st_mtime,
false, path);
ServerStats::LogPage(path, 200);
return;
}
}
}
// check static contents that were generated by dynamic pages
if (cachableDynamicContent) {
// check against dynamic content cache
ASSERT(transport->getUrl());
string key = path + transport->getUrl();
if (DynamicContentCache::TheCache.find(key, data, len, compressed)) {
sendStaticContent(transport, data, len, 0, compressed, path);
ServerStats::LogPage(path, 200);
return;
}
}
}
// proxy any URLs that not specified in ServeURLs
if (!RuntimeOption::ProxyOrigin.empty() &&
((RuntimeOption::UseServeURLs &&
RuntimeOption::ServeURLs.find(path) ==
RuntimeOption::ServeURLs.end()) ||
(RuntimeOption::UseProxyURLs &&
(RuntimeOption::ProxyURLs.find(path) !=
RuntimeOption::ProxyURLs.end() ||
MatchAnyPattern(path, RuntimeOption::ProxyPatterns) ||
(abs(rand()) % 100) < RuntimeOption::ProxyPercentage)))) {
for (int i = 0; i < RuntimeOption::ProxyRetry; i++) {
bool force = (i == RuntimeOption::ProxyRetry - 1); // last one
if (handleProxyRequest(transport, force)) break;
}
return;
}
// record request for debugging purpose
std::string tmpfile = HttpProtocol::RecordRequest(transport);
// main body
hphp_session_init();
vhost->setRequestTimeoutSeconds();
bool ret = false;
try {
ret = executePHPRequest(transport, reqURI, sourceRootInfo,
cachableDynamicContent);
} catch (const Eval::DebuggerException &e) {
transport->sendString(e.what(), 200);
transport->onSendEnd();
hphp_context_exit(g_context.getNoCheck(), true, true, transport->getUrl());
} catch (...) {
Logger::Error("Unhandled exception in HPHP server engine.");
}
GetAccessLog().log(transport, vhost);
hphp_session_exit();
HttpProtocol::ClearRecord(ret, tmpfile);
}
