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-rw-r--r--win32/signal.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/win32/signal.c b/win32/signal.c
new file mode 100644
index 0000000000..d682c42fbe
--- /dev/null
+++ b/win32/signal.c
@@ -0,0 +1,172 @@
+/*
+ +----------------------------------------------------------------------+
+ | PHP Version 7 |
+ +----------------------------------------------------------------------+
+ | Copyright (c) 1997-2019 The PHP Group |
+ +----------------------------------------------------------------------+
+ | This source file is subject to version 3.01 of the PHP license, |
+ | that is bundled with this package in the file LICENSE, and is |
+ | available through the world-wide-web at the following url: |
+ | http://www.php.net/license/3_01.txt |
+ | If you did not receive a copy of the PHP license and are unable to |
+ | obtain it through the world-wide-web, please send a note to |
+ | license@php.net so we can mail you a copy immediately. |
+ +----------------------------------------------------------------------+
+ | Author: Anatol Belski <ab@php.net> |
+ +----------------------------------------------------------------------+
+*/
+
+#include "php.h"
+#include "SAPI.h"
+
+#include "win32/console.h"
+
+ZEND_TLS zval ctrl_handler;
+ZEND_TLS DWORD ctrl_evt = (DWORD)-1;
+ZEND_TLS zend_bool *vm_interrupt_flag = NULL;
+
+static void (*orig_interrupt_function)(zend_execute_data *execute_data);
+
+static void php_win32_signal_ctrl_interrupt_function(zend_execute_data *execute_data)
+{/*{{{*/
+ if (IS_UNDEF != Z_TYPE(ctrl_handler)) {
+ zval retval, params[1];
+
+ ZVAL_LONG(&params[0], ctrl_evt);
+
+ /* If the function returns, */
+ call_user_function(EG(function_table), NULL, &ctrl_handler, &retval, 1, params);
+ zval_ptr_dtor(&retval);
+ }
+
+ if (orig_interrupt_function) {
+ orig_interrupt_function(execute_data);
+ }
+}/*}}}*/
+
+PHP_WINUTIL_API void php_win32_signal_ctrl_handler_init(void)
+{/*{{{*/
+ /* We are in the main thread! */
+ if (!php_win32_console_is_cli_sapi()) {
+ return;
+ }
+
+ orig_interrupt_function = zend_interrupt_function;
+ zend_interrupt_function = php_win32_signal_ctrl_interrupt_function;
+ vm_interrupt_flag = &EG(vm_interrupt);
+ ZVAL_UNDEF(&ctrl_handler);
+
+ REGISTER_MAIN_LONG_CONSTANT("PHP_WINDOWS_EVENT_CTRL_C", CTRL_C_EVENT, CONST_PERSISTENT | CONST_CS);
+ REGISTER_MAIN_LONG_CONSTANT("PHP_WINDOWS_EVENT_CTRL_BREAK", CTRL_BREAK_EVENT, CONST_PERSISTENT | CONST_CS);
+}/*}}}*/
+
+PHP_WINUTIL_API void php_win32_signal_ctrl_handler_shutdown(void)
+{/*{{{*/
+ if (!php_win32_console_is_cli_sapi()) {
+ return;
+ }
+
+ zend_interrupt_function = orig_interrupt_function;
+ orig_interrupt_function = NULL;
+ vm_interrupt_flag = NULL;
+ ZVAL_UNDEF(&ctrl_handler);
+}/*}}}*/
+
+static BOOL php_win32_signal_system_ctrl_handler(DWORD evt)
+{/*{{{*/
+ if (CTRL_C_EVENT != evt && CTRL_BREAK_EVENT != evt) {
+ return FALSE;
+ }
+
+ (void)InterlockedExchange((LONG*)vm_interrupt_flag, 1);
+
+ ctrl_evt = evt;
+
+ return TRUE;
+}/*}}}*/
+
+/* {{{ proto bool sapi_windows_set_ctrl_handler(callable handler, [, bool add = true])
+ Assigns a CTRL signal handler to a PHP function */
+PHP_FUNCTION(sapi_windows_set_ctrl_handler)
+{
+ zval *handler = NULL;
+ zend_bool add = 1;
+
+#if ZTS
+ if (!tsrm_is_main_thread()) {
+ php_error_docref(NULL, E_WARNING, "CTRL events can only be received on the main thread");
+ return;
+ }
+#endif
+
+ if (!php_win32_console_is_cli_sapi()) {
+ php_error_docref(NULL, E_WARNING, "CTRL events trapping is only supported on console");
+ return;
+ }
+
+ if (zend_parse_parameters(ZEND_NUM_ARGS(), "z|b", &handler, &add) == FAILURE) {
+ return;
+ }
+
+ if (IS_NULL == Z_TYPE_P(handler)) {
+ zval_dtor(&ctrl_handler);
+ ZVAL_UNDEF(&ctrl_handler);
+ if (!SetConsoleCtrlHandler(NULL, add)) {
+ RETURN_FALSE;
+ }
+ RETURN_TRUE;
+ }
+
+ if (!zend_is_callable(handler, 0, NULL)) {
+ zend_string *func_name = zend_get_callable_name(handler);
+ php_error_docref(NULL, E_WARNING, "%s is not a callable function name error", ZSTR_VAL(func_name));
+ zend_string_release_ex(func_name, 0);
+ RETURN_FALSE;
+ }
+
+ if (!SetConsoleCtrlHandler(NULL, FALSE) || !SetConsoleCtrlHandler(php_win32_signal_system_ctrl_handler, add)) {
+ zend_string *func_name = zend_get_callable_name(handler);
+ php_error_docref(NULL, E_WARNING, "Unable to attach %s as a CTRL handler", ZSTR_VAL(func_name));
+ zend_string_release_ex(func_name, 0);
+ RETURN_FALSE;
+ }
+
+ zval_dtor(&ctrl_handler);
+ ZVAL_COPY(&ctrl_handler, handler);
+
+ RETURN_TRUE;
+}/*}}}*/
+
+PHP_FUNCTION(sapi_windows_generate_ctrl_event)
+{/*{{{*/
+ zend_long evt, pid = 0;
+ zend_bool ret = 0;
+
+ if (!php_win32_console_is_cli_sapi()) {
+ php_error_docref(NULL, E_WARNING, "CTRL events trapping is only supported on console");
+ return;
+ }
+
+ if (zend_parse_parameters(ZEND_NUM_ARGS(), "l|l", &evt, &pid) == FAILURE) {
+ return;
+ }
+
+ SetConsoleCtrlHandler(NULL, TRUE);
+
+ ret = (GenerateConsoleCtrlEvent(evt, pid) != 0);
+
+ if (IS_UNDEF != Z_TYPE(ctrl_handler)) {
+ ret = ret && SetConsoleCtrlHandler(php_win32_signal_system_ctrl_handler, TRUE);
+ }
+
+ RETURN_BOOL(ret);
+}/*}}}*/
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: sw=4 ts=4 fdm=marker
+ * vim<600: sw=4 ts=4
+ */