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From af02bde61c2a5af1ae64cac09ffe2b25237aa58e Mon Sep 17 00:00:00 2001
Patch-Origin: https://github.com/mkoppanen/php-zmq/commit/af02bde61c2a5af1ae64cac09ffe2b25237aa58e
From: Alex/AT <alex@alex-at.net>
Date: Mon, 10 Dec 2018 06:02:27 +0300
Subject: [PATCH] PHP 7.3 compatibility and bugfixes

- Define new GC_ADDREF/DELREF/SET_REFCOUNT macros for older PHP versions and use them instead of direct GC reference counter access

- Fixup all necessary 'long' type parameters to 'zend_long', PHP 7.3 makes it mandatory, also fixup some direct function implementations to accept the same

- In php_zmq_recv(), zend_string_init() was wrongly called with third parameter as '1', marking new string with IS_STR_PERSISTENT, this caused heap corruption and/or segfaults with PHP 7.3 and could possibly cause other sorts of bugs under any 7.x version
  With ZVAL_STRINGL macro, this last '1' parameter meant to copy the string and was seemingly erroneously moved to zend_string_init(). zend_string_init() copies string by default, and last parameter has totally different meaning here

- In poll(), flag ZVAL separation on passed arrays (PHP 7.3 makes it mandatory)

- Test 19 (exception on connect callback with forced reference parameter): skip on PHP 7.1 and higher, PHP >= 7.1 started to fallback to passing argument by value instead of failing

- Test 21 (warning generation from callback): it is ok, but PHP 7.3 uses 'int' instead of 'integer' for constants, so allow any word in place of the word 'integer'
---
 php_zmq.h                               |  6 ++++
 tests/019-callbackinvalidsignature.phpt |  3 +-
 tests/021-callbackwarning.phpt          |  2 +-
 zmq.c                                   | 40 ++++++++++++-------------
 zmq_sockopt.c                           |  4 +--
 5 files changed, 30 insertions(+), 25 deletions(-)

diff --git a/php_zmq.h b/php_zmq.h
index ef50bfb..3833967 100644
--- a/php_zmq.h
+++ b/php_zmq.h
@@ -44,6 +44,12 @@
 
 #include "php.h"
 
+#if PHP_VERSION_ID < 70300
+#define GC_ADDREF(p)              ++GC_REFCOUNT(p)
+#define GC_DELREF(p)              --GC_REFCOUNT(p)
+#define GC_SET_REFCOUNT(p, rc)    GC_REFCOUNT(p) = rc
+#endif
+
 extern zend_module_entry zmq_module_entry;
 #define phpext_zmq_ptr &zmq_module_entry
 
diff --git a/tests/019-callbackinvalidsignature.phpt b/tests/019-callbackinvalidsignature.phpt
index 753de31..b5bb20c 100644
--- a/tests/019-callbackinvalidsignature.phpt
+++ b/tests/019-callbackinvalidsignature.phpt
@@ -1,7 +1,8 @@
 --TEST--
 Test callback edge-cases
 --SKIPIF--
-<?php require_once(dirname(__FILE__) . '/skipif.inc'); ?>
+<?php require_once(dirname(__FILE__) . '/skipif.inc');
+if (PHP_VERSION_ID >= 70100) die("skip PHP 7.1 and higher fallback to passing argument by value even when forced to reference"); ?>
 --FILE--
 <?php
 
diff --git a/tests/021-callbackwarning.phpt b/tests/021-callbackwarning.phpt
index 435743e..eba2ecf 100644
--- a/tests/021-callbackwarning.phpt
+++ b/tests/021-callbackwarning.phpt
@@ -13,5 +13,5 @@ function generate_warning($a, $b)
 $socket = new ZMQSocket(new ZMQContext(), ZMQ::SOCKET_REQ, 'persistent_socket', 'generate_warning');
 
 --EXPECTF--
-Warning: in_array() expects parameter 2 to be array, integer given in %s on line %d
+Warning: in_array() expects parameter 2 to be array, %s given in %s on line %d
 
diff --git a/zmq.c b/zmq.c
index 942e69b..57ebd11 100644
--- a/zmq.c
+++ b/zmq.c
@@ -235,7 +235,7 @@ php_zmq_context *php_zmq_context_get(zend_long io_threads, zend_bool is_persiste
 		le.type = php_zmq_context_list_entry();
 		le.ptr  = context;
 
-		GC_REFCOUNT(&le) = 1;
+		GC_SET_REFCOUNT(&le, 1);
 
 		/* plist_key is not a persistent allocated key, thus we use str_update here */
 		if (zend_hash_str_update_mem(&EG(persistent_list), plist_key->val, plist_key->len, &le, sizeof(le)) == NULL) {
@@ -369,7 +369,7 @@ PHP_METHOD(zmq, curvekeypair)
 PHP_METHOD(zmqcontext, __construct)
 {
 	php_zmq_context_object *intern;
-	long io_threads = 1;
+	zend_long io_threads = 1;
 	zend_bool is_persistent = 1;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|lb", &io_threads, &is_persistent) == FAILURE) {
@@ -495,7 +495,7 @@ PHP_METHOD(zmqcontext, getOpt)
 	Create a new zmq socket
 */
 static
-php_zmq_socket *php_zmq_socket_new(php_zmq_context *context, int type, zend_bool is_persistent)
+php_zmq_socket *php_zmq_socket_new(php_zmq_context *context, zend_long type, zend_bool is_persistent)
 {
 	php_zmq_socket *zmq_sock;
 
@@ -503,7 +503,7 @@ php_zmq_socket *php_zmq_socket_new(php_zmq_context *context, int type, zend_bool
 	zmq_sock->z_socket    = zmq_socket(context->z_ctx, type);
 	zmq_sock->pid         = getpid();
 	zmq_sock->ctx         = context;
-    zmq_sock->socket_type = type;
+	zmq_sock->socket_type = type;
 
 	if (!zmq_sock->z_socket) {
 		pefree(zmq_sock, is_persistent);
@@ -535,7 +535,7 @@ void php_zmq_socket_store(php_zmq_socket *zmq_sock_p, zend_long type, zend_strin
 	le.type = php_zmq_socket_list_entry();
 	le.ptr  = zmq_sock_p;
 
-	GC_REFCOUNT(&le) = 1;
+	GC_SET_REFCOUNT(&le, 1);
 
 	plist_key = php_zmq_socket_plist_key(type, persistent_id, use_shared_ctx);
 
@@ -796,7 +796,7 @@ PHP_METHOD(zmqsocket, __construct)
 
 /* {{{ static zend_bool php_zmq_send(php_zmq_socket_object *intern, char *message_param, long flags)
 */
-static zend_bool php_zmq_send(php_zmq_socket_object *intern, zend_string *message_param, long flags)
+static zend_bool php_zmq_send(php_zmq_socket_object *intern, zend_string *message_param, zend_long flags)
 {
 	int rc, errno_;
 	zmq_msg_t message;
@@ -828,7 +828,7 @@ static void php_zmq_sendmsg_impl(INTERNAL_FUNCTION_PARAMETERS)
 {
 	php_zmq_socket_object *intern;
 	zend_string *message_param;
-	long flags = 0;
+	zend_long flags = 0;
 	zend_bool ret;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "S|l", &message_param, &flags) == FAILURE) {
@@ -890,7 +890,7 @@ PHP_METHOD(zmqsocket, sendmulti)
 	zval *messages;
 	php_zmq_socket_object *intern;
 	int to_send, ret = 0;
-	long flags = 0;
+	zend_long flags = 0;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "a|l", &messages, &flags) == FAILURE) {
 		return;
@@ -910,7 +910,7 @@ PHP_METHOD(zmqsocket, sendmulti)
 /* {{{ static zend_bool php_zmq_recv(php_zmq_socket_object *intern, long flags, zval *return_value)
 */
 static
-zend_string *php_zmq_recv(php_zmq_socket_object *intern, long flags)
+zend_string *php_zmq_recv(php_zmq_socket_object *intern, zend_long flags)
 {
 	int rc, errno_;
 	zmq_msg_t message;
@@ -933,7 +933,7 @@ zend_string *php_zmq_recv(php_zmq_socket_object *intern, long flags)
 		return NULL;
 	}
 
-	str = zend_string_init(zmq_msg_data(&message), zmq_msg_size(&message), 1);
+	str = zend_string_init(zmq_msg_data(&message), zmq_msg_size(&message), 0);
 	zmq_msg_close(&message);
 	return str;
 }
@@ -943,7 +943,7 @@ static void php_zmq_recvmsg_impl(INTERNAL_FUNCTION_PARAMETERS)
 {
 	zend_string *str = NULL;
 	php_zmq_socket_object *intern;
-	long flags = 0;
+	zend_long flags = 0;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|l", &flags) == FAILURE) {
 		return;
@@ -974,7 +974,7 @@ PHP_METHOD(zmqsocket, recvmulti)
 {
 	php_zmq_socket_object *intern;
 	size_t value_len;
-	long flags = 0;
+	zend_long flags = 0;
 #if ZMQ_VERSION_MAJOR < 3
 	int64_t value;
 #else
@@ -1303,7 +1303,7 @@ PHP_METHOD(zmqpoll, add)
 {
 	php_zmq_poll_object *intern;
 	zval *object;
-	long events;
+	zend_long events;
 	int error;
 	zend_string *key;
 
@@ -1423,10 +1423,10 @@ PHP_METHOD(zmqpoll, poll)
 	php_zmq_poll_object *intern;
 	zval *r_array, *w_array;
 
-	long timeout = -1;
+	zend_long timeout = -1;
 	int rc;
 
-	if (zend_parse_parameters(ZEND_NUM_ARGS(), "a!a!|l", &r_array, &w_array, &timeout) == FAILURE) {
+	if (zend_parse_parameters(ZEND_NUM_ARGS(), "a!/a!/|l", &r_array, &w_array, &timeout) == FAILURE) {
 		return;
 	}
 
@@ -1592,7 +1592,7 @@ void s_clear_device_callback (php_zmq_device_cb_t *cb)
 }
 
 static
-void s_init_device_callback (php_zmq_device_cb_t *cb, zend_fcall_info *fci, zend_fcall_info_cache *fci_cache, long timeout, zval *user_data)
+void s_init_device_callback (php_zmq_device_cb_t *cb, zend_fcall_info *fci, zend_fcall_info_cache *fci_cache, zend_long timeout, zval *user_data)
 {
 	memcpy (&cb->fci, fci, sizeof (zend_fcall_info));
 	memcpy (&cb->fci_cache, fci_cache, sizeof (zend_fcall_info_cache));
@@ -1615,7 +1615,7 @@ void s_init_device_callback (php_zmq_device_cb_t *cb, zend_fcall_info *fci, zend
 PHP_METHOD(zmqdevice, setidletimeout)
 {
 	php_zmq_device_object *intern;
-	long timeout;
+	zend_long timeout;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &timeout) == FAILURE) {
 		return;
@@ -1644,7 +1644,7 @@ PHP_METHOD(zmqdevice, getidletimeout)
 PHP_METHOD(zmqdevice, settimertimeout)
 {
 	php_zmq_device_object *intern;
-	long timeout;
+	zend_long timeout;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &timeout) == FAILURE) {
 		return;
@@ -1676,7 +1676,7 @@ PHP_METHOD(zmqdevice, setidlecallback)
 	zval *user_data = NULL;
 	zend_fcall_info fci;
 	zend_fcall_info_cache fci_cache;
-	long timeout = 0;
+	zend_long timeout = 0;
 
 	if (ZEND_NUM_ARGS() == 2) {
 		php_error_docref(NULL, E_DEPRECATED, "The signature for setIdleCallback has changed, please update your code");
@@ -1718,7 +1718,7 @@ PHP_METHOD(zmqdevice, settimercallback)
 	zval *user_data = NULL;
 	zend_fcall_info fci;
 	zend_fcall_info_cache fci_cache;
-	long timeout;
+	zend_long timeout;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "fl|z!", &fci, &fci_cache, &timeout, &user_data) == FAILURE) {
 		return;
diff --git a/zmq_sockopt.c b/zmq_sockopt.c
index 1357032..3a00421 100644
--- a/zmq_sockopt.c
+++ b/zmq_sockopt.c
@@ -1,5 +1,3 @@
-
-
 /*
 +-----------------------------------------------------------------------------------+
 |  ZMQ extension for PHP                                                            |
@@ -2033,7 +2031,7 @@ PHP_METHOD(zmqsocket, getsockopt)
 PHP_METHOD(zmqsocket, setsockopt)
 {
     php_zmq_socket_object *intern;
-    long key;
+    zend_long key;
     zval *zv;
 
     if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lz/", &key, &zv) == FAILURE) {