Zend Library

1 files changed, 123 insertions, 0 deletions

diff --git a/Zend/zend_extensions.c b/Zend/zend_extensions.c
new file mode 100644
index 0000000000..fe63768dba
--- /dev/null
+++ b/Zend/zend_extensions.c
@@ -0,0 +1,123 @@
+/*
+   +----------------------------------------------------------------------+
+   | Zend Engine                                                          |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1998, 1999 Andi Gutmans, Zeev Suraski                  |
+   +----------------------------------------------------------------------+
+   | This source file is subject to the Zend license, that is bundled     |
+   | with this package in the file LICENSE.  If you did not receive a     |
+   | copy of the Zend license, please mail us at zend@zend.com so we can  |
+   | send you a copy immediately.                                         |
+   +----------------------------------------------------------------------+
+   | Authors: Andi Gutmans <andi@zend.com>                                |
+   |          Zeev Suraski <zeev@zend.com>                                |
+   +----------------------------------------------------------------------+
+*/
+
+#include "zend_extensions.h"
+
+ZEND_API zend_llist zend_extensions;
+static int last_resource_number;
+
+int zend_load_extensions(char **extension_paths)
+{
+	char **p = extension_paths;
+
+	if (!p) {
+		return SUCCESS;
+	}
+	while (*p) {
+		if (zend_load_extension(*p)==FAILURE) {
+			return FAILURE;
+		}
+		p++;
+	}
+	return SUCCESS;
+}
+
+
+int zend_load_extension(char *path)
+{
+#if ZEND_EXTENSIONS_SUPPORT
+	DL_HANDLE handle;
+	zend_extension extension, *new_extension;
+	zend_extension_version_info *extension_version_info;
+
+	handle = DL_LOAD(path);
+	if (!handle) {
+		zend_printf("Failed loading %s\n", path);
+		return FAILURE;
+	}
+
+	extension_version_info = (zend_extension_version_info *) DL_FETCH_SYMBOL(handle, "extension_version_info");
+	new_extension = (zend_extension *) DL_FETCH_SYMBOL(handle, "zend_extension_entry");
+	if (!extension_version_info || !new_extension) {
+		zend_printf("%s doesn't appear to be a valid Zend extension\n", path);
+		return FAILURE;
+	}
+
+	if (extension_version_info->zend_extension_api_no > ZEND_EXTENSION_API_NO) {
+		zend_printf("%s requires Zend version %s or later\n"
+					"Current version %s, API version %d\n",
+					new_extension->name,
+					extension_version_info->required_zend_version,
+					ZEND_VERSION,
+					ZEND_EXTENSION_API_NO);
+		return FAILURE;
+	} else if (extension_version_info->zend_extension_api_no < ZEND_EXTENSION_API_NO) {
+		/* we may be able to allow for downwards compatability in some harmless cases. */
+		zend_printf("%s is outdated (API version %d, current version %d)\n"
+					"Contact %s at %s for a later version of this module.\n",
+					new_extension->name,
+					extension_version_info->zend_extension_api_no,
+					ZEND_EXTENSION_API_NO,
+					new_extension->author,
+					new_extension->URL);
+		return FAILURE;
+	} else if (ZTS_V!=extension_version_info->thread_safe) {
+		zend_printf("Cannot load %s - it %s thread safe, whereas Zend %s\n",
+					new_extension->name,
+					(extension_version_info->thread_safe?"is":"isn't"),
+					(ZTS_V?"is":"isn't"));
+		return FAILURE;
+	}
+
+	if (new_extension->startup) {
+		new_extension->startup(new_extension);
+	}
+	extension = *new_extension;
+	extension.handle = handle;
+
+	zend_llist_add_element(&zend_extensions, &extension);
+
+	/*zend_printf("Loaded %s, version %s\n", extension.name, extension.version);*/
+
+	zend_append_version_info(&extension);
+	return SUCCESS;
+#else
+	zend_printf("Extensions are not supported on this platform.\n");
+	return FAILURE
+#endif
+}
+
+
+void zend_extension_dtor(zend_extension *extension)
+{
+#if ZEND_EXTENSIONS_SUPPORT
+	if (extension->shutdown) {
+		extension->shutdown(extension);
+	}
+	DL_UNLOAD(extension->handle);
+#endif
+}
+
+
+ZEND_API int zend_get_resource_handle(zend_extension *extension)
+{
+	if (last_resource_number<4) {
+		extension->resource_number = last_resource_number;
+		return last_resource_number;
+	} else {
+		return -1;
+	}
+}