From ebda88d143163929a6148565610947f04bc1807e Mon Sep 17 00:00:00 2001
From: Alexander Polyakov <al.polyakov@vk.team>
Date: Mon, 16 Dec 2024 16:35:58 +0300
Subject: [PATCH] [k2] support php serialized confdata values (#1190)

Also add check to 'from_mixed' that a mixed contains an object
---
 runtime-common/core/core-types/definition/mixed.inl  | 3 ++-
 runtime-light/stdlib/confdata/confdata-functions.cpp | 3 ++-
 runtime-light/stdlib/file/file-system-functions.cpp  | 6 +++---
 runtime-light/stdlib/file/resource.cpp               | 2 +-
 4 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/runtime-common/core/core-types/definition/mixed.inl b/runtime-common/core/core-types/definition/mixed.inl
index 90c79afa0b..81ad05012c 100644
--- a/runtime-common/core/core-types/definition/mixed.inl
+++ b/runtime-common/core/core-types/definition/mixed.inl
@@ -296,7 +296,8 @@ ResultClass from_mixed(const mixed &m, const string &) noexcept {
     php_error("Internal error. Class inside a mixed is not polymorphic");
     return {};
   } else {
-    return ResultClass::create_from_base_raw_ptr(dynamic_cast<abstract_refcountable_php_interface *>(m.as_object_ptr<ResultClass>()));
+    return m.is_object() ? ResultClass::create_from_base_raw_ptr(dynamic_cast<abstract_refcountable_php_interface *>(m.as_object_ptr<ResultClass>()))
+                         : ResultClass{};
   }
 }
 
diff --git a/runtime-light/stdlib/confdata/confdata-functions.cpp b/runtime-light/stdlib/confdata/confdata-functions.cpp
index ac5e75e872..afc89464ad 100644
--- a/runtime-light/stdlib/confdata/confdata-functions.cpp
+++ b/runtime-light/stdlib/confdata/confdata-functions.cpp
@@ -12,6 +12,7 @@
 #include "runtime-common/core/runtime-core.h"
 #include "runtime-common/core/utils/kphp-assert-core.h"
 #include "runtime-common/stdlib/serialization/json-functions.h"
+#include "runtime-common/stdlib/serialization/serialize-functions.h"
 #include "runtime-light/coroutine/task.h"
 #include "runtime-light/k2-platform/k2-api.h"
 #include "runtime-light/state/instance-state.h"
@@ -30,7 +31,7 @@ mixed extract_confdata_value(tl::confdataValue &&confdata_value) noexcept {
     return {};
   }
   if (confdata_value.is_php_serialized) {
-    php_critical_error("unimplemented"); // TODO
+    return f$unserialize(confdata_value.value);
   } else if (confdata_value.is_json_serialized) {
     return f$json_decode(confdata_value.value);
   } else {
diff --git a/runtime-light/stdlib/file/file-system-functions.cpp b/runtime-light/stdlib/file/file-system-functions.cpp
index 63f9659db6..324290eec3 100644
--- a/runtime-light/stdlib/file/file-system-functions.cpp
+++ b/runtime-light/stdlib/file/file-system-functions.cpp
@@ -51,7 +51,7 @@ Optional<string> f$file_get_contents(const string &stream) noexcept {
 
 task_t<Optional<int64_t>> f$fwrite(const resource &stream, const string &text) noexcept {
   auto rsrc{from_mixed<class_instance<underlying_resource_t>>(stream, {})};
-  if (rsrc.is_null()) {
+  if (rsrc.is_null()) [[unlikely]] {
     php_warning("wrong resource in fwrite %s", stream.to_string().c_str());
     co_return false;
   }
@@ -61,7 +61,7 @@ task_t<Optional<int64_t>> f$fwrite(const resource &stream, const string &text) n
 
 bool f$fflush(const resource &stream) noexcept {
   auto rsrc{from_mixed<class_instance<underlying_resource_t>>(stream, {})};
-  if (rsrc.is_null()) {
+  if (rsrc.is_null()) [[unlikely]] {
     php_warning("wrong resource in fflush %s", stream.to_string().c_str());
     return false;
   }
@@ -72,7 +72,7 @@ bool f$fflush(const resource &stream) noexcept {
 
 bool f$fclose(const resource &stream) noexcept {
   auto rsrc{from_mixed<class_instance<underlying_resource_t>>(stream, {})};
-  if (rsrc.is_null()) {
+  if (rsrc.is_null()) [[unlikely]] {
     php_warning("wrong resource in fclose: %s", stream.to_string().c_str());
     return false;
   }
diff --git a/runtime-light/stdlib/file/resource.cpp b/runtime-light/stdlib/file/resource.cpp
index 4efecd2fce..ffc9af9057 100644
--- a/runtime-light/stdlib/file/resource.cpp
+++ b/runtime-light/stdlib/file/resource.cpp
@@ -24,7 +24,7 @@ underlying_resource_t::underlying_resource_t(std::string_view scheme) noexcept
       break;
     }
     case resource_kind::STDOUT: {
-      if (instance_st.image_kind() == ImageKind::CLI || instance_st.image_kind() == ImageKind::Server) {
+      if (instance_st.image_kind() == ImageKind::CLI) {
         stream_d_ = instance_st.standard_stream();
       } else {
         last_errc = k2::errno_einval;