diff options
Diffstat (limited to 'Zend/zend_extensions.c')
| -rw-r--r-- | Zend/zend_extensions.c | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/Zend/zend_extensions.c b/Zend/zend_extensions.c new file mode 100644 index 0000000..2dd7cd4 --- /dev/null +++ b/Zend/zend_extensions.c @@ -0,0 +1,250 @@ +/* + +----------------------------------------------------------------------+ + | Zend Engine | + +----------------------------------------------------------------------+ + | Copyright (c) 1998-2013 Zend Technologies Ltd. (http://www.zend.com) | + +----------------------------------------------------------------------+ + | This source file is subject to version 2.00 of the Zend 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.zend.com/license/2_00.txt. | + | If you did not receive a copy of the Zend license and are unable to | + | obtain it through the world-wide-web, please send a note to | + | license@zend.com so we can mail you a copy immediately. | + +----------------------------------------------------------------------+ + | Authors: Andi Gutmans <andi@zend.com> | + | Zeev Suraski <zeev@zend.com> | + +----------------------------------------------------------------------+ +*/ + +/* $Id$ */ + +#include "zend_extensions.h" + +ZEND_API zend_llist zend_extensions; +static int last_resource_number; + +int zend_load_extension(const char *path) +{ +#if ZEND_EXTENSIONS_SUPPORT + DL_HANDLE handle; + zend_extension *new_extension; + zend_extension_version_info *extension_version_info; + + handle = DL_LOAD(path); + if (!handle) { +#ifndef ZEND_WIN32 + fprintf(stderr, "Failed loading %s: %s\n", path, DL_ERROR()); +/* See http://support.microsoft.com/kb/190351 */ +#ifdef PHP_WIN32 + fflush(stderr); +#endif +#else + fprintf(stderr, "Failed loading %s\n", path); +#endif + return FAILURE; + } + + extension_version_info = (zend_extension_version_info *) DL_FETCH_SYMBOL(handle, "extension_version_info"); + if (!extension_version_info) { + 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 (!new_extension) { + new_extension = (zend_extension *) DL_FETCH_SYMBOL(handle, "_zend_extension_entry"); + } + if (!extension_version_info || !new_extension) { + fprintf(stderr, "%s doesn't appear to be a valid Zend extension\n", path); +/* See http://support.microsoft.com/kb/190351 */ +#ifdef PHP_WIN32 + fflush(stderr); +#endif + DL_UNLOAD(handle); + return FAILURE; + } + + + /* allow extension to proclaim compatibility with any Zend version */ + if (extension_version_info->zend_extension_api_no != ZEND_EXTENSION_API_NO &&(!new_extension->api_no_check || new_extension->api_no_check(ZEND_EXTENSION_API_NO) != SUCCESS)) { + if (extension_version_info->zend_extension_api_no > ZEND_EXTENSION_API_NO) { + fprintf(stderr, "%s requires Zend Engine API version %d.\n" + "The Zend Engine API version %d which is installed, is outdated.\n\n", + new_extension->name, + extension_version_info->zend_extension_api_no, + ZEND_EXTENSION_API_NO); +/* See http://support.microsoft.com/kb/190351 */ +#ifdef PHP_WIN32 + fflush(stderr); +#endif + DL_UNLOAD(handle); + return FAILURE; + } else if (extension_version_info->zend_extension_api_no < ZEND_EXTENSION_API_NO) { + fprintf(stderr, "%s requires Zend Engine API version %d.\n" + "The Zend Engine API version %d which is installed, is newer.\n" + "Contact %s at %s for a later version of %s.\n\n", + new_extension->name, + extension_version_info->zend_extension_api_no, + ZEND_EXTENSION_API_NO, + new_extension->author, + new_extension->URL, + new_extension->name); +/* See http://support.microsoft.com/kb/190351 */ +#ifdef PHP_WIN32 + fflush(stderr); +#endif + DL_UNLOAD(handle); + return FAILURE; + } + } else if (strcmp(ZEND_EXTENSION_BUILD_ID, extension_version_info->build_id) && + (!new_extension->build_id_check || new_extension->build_id_check(ZEND_EXTENSION_BUILD_ID) != SUCCESS)) { + fprintf(stderr, "Cannot load %s - it was built with configuration %s, whereas running engine is %s\n", + new_extension->name, extension_version_info->build_id, ZEND_EXTENSION_BUILD_ID); +/* See http://support.microsoft.com/kb/190351 */ +#ifdef PHP_WIN32 + fflush(stderr); +#endif + DL_UNLOAD(handle); + return FAILURE; + } + + return zend_register_extension(new_extension, handle); +#else + fprintf(stderr, "Extensions are not supported on this platform.\n"); +/* See http://support.microsoft.com/kb/190351 */ +#ifdef PHP_WIN32 + fflush(stderr); +#endif + return FAILURE; +#endif +} + + +int zend_register_extension(zend_extension *new_extension, DL_HANDLE handle) +{ +#if ZEND_EXTENSIONS_SUPPORT + zend_extension extension; + + extension = *new_extension; + extension.handle = handle; + + zend_extension_dispatch_message(ZEND_EXTMSG_NEW_EXTENSION, &extension); + + zend_llist_add_element(&zend_extensions, &extension); + + /*fprintf(stderr, "Loaded %s, version %s\n", extension.name, extension.version);*/ +#endif + + return SUCCESS; +} + + +static void zend_extension_shutdown(zend_extension *extension TSRMLS_DC) +{ +#if ZEND_EXTENSIONS_SUPPORT + if (extension->shutdown) { + extension->shutdown(extension); + } +#endif +} + +static int zend_extension_startup(zend_extension *extension) +{ +#if ZEND_EXTENSIONS_SUPPORT + if (extension->startup) { + if (extension->startup(extension)!=SUCCESS) { + return 1; + } + zend_append_version_info(extension); + } +#endif + return 0; +} + + +int zend_startup_extensions_mechanism() +{ + /* Startup extensions mechanism */ + zend_llist_init(&zend_extensions, sizeof(zend_extension), (void (*)(void *)) zend_extension_dtor, 1); + last_resource_number = 0; + return SUCCESS; +} + + +int zend_startup_extensions() +{ + zend_llist_apply_with_del(&zend_extensions, (int (*)(void *)) zend_extension_startup); + return SUCCESS; +} + + +void zend_shutdown_extensions(TSRMLS_D) +{ + zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_shutdown TSRMLS_CC); + zend_llist_destroy(&zend_extensions); +} + + +void zend_extension_dtor(zend_extension *extension) +{ +#if ZEND_EXTENSIONS_SUPPORT && !ZEND_DEBUG + if (extension->handle) { + DL_UNLOAD(extension->handle); + } +#endif +} + + +static void zend_extension_message_dispatcher(const zend_extension *extension, int num_args, va_list args TSRMLS_DC) +{ + int message; + void *arg; + + if (!extension->message_handler || num_args!=2) { + return; + } + message = va_arg(args, int); + arg = va_arg(args, void *); + extension->message_handler(message, arg); +} + + +ZEND_API void zend_extension_dispatch_message(int message, void *arg) +{ + TSRMLS_FETCH(); + + zend_llist_apply_with_arguments(&zend_extensions, (llist_apply_with_args_func_t) zend_extension_message_dispatcher TSRMLS_CC, 2, message, arg); +} + + +ZEND_API int zend_get_resource_handle(zend_extension *extension) +{ + if (last_resource_number<ZEND_MAX_RESERVED_RESOURCES) { + extension->resource_number = last_resource_number; + return last_resource_number++; + } else { + return -1; + } +} + + +ZEND_API zend_extension *zend_get_extension(const char *extension_name) +{ + zend_llist_element *element; + + for (element = zend_extensions.head; element; element = element->next) { + zend_extension *extension = (zend_extension *) element->data; + + if (!strcmp(extension->name, extension_name)) { + return extension; + } + } + return NULL; +} + +/* + * Local variables: + * tab-width: 4 + * c-basic-offset: 4 + * indent-tabs-mode: t + * End: + */ |