diff options
author | Lorry Tar Creator <lorry-tar-importer@baserock.org> | 2013-03-14 05:42:27 +0000 |
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committer | <> | 2013-04-03 16:25:08 +0000 |
commit | c4dd7a1a684490673e25aaf4fabec5df138854c4 (patch) | |
tree | 4d57c44caae4480efff02b90b9be86f44bf25409 /ext/fileinfo/fileinfo.c | |
download | php2-master.tar.gz |
Imported from /home/lorry/working-area/delta_php2/php-5.4.13.tar.bz2.HEADphp-5.4.13master
Diffstat (limited to 'ext/fileinfo/fileinfo.c')
-rw-r--r-- | ext/fileinfo/fileinfo.c | 606 |
1 files changed, 606 insertions, 0 deletions
diff --git a/ext/fileinfo/fileinfo.c b/ext/fileinfo/fileinfo.c new file mode 100644 index 0000000..353adb9 --- /dev/null +++ b/ext/fileinfo/fileinfo.c @@ -0,0 +1,606 @@ +/* + +----------------------------------------------------------------------+ + | PHP Version 5 | + +----------------------------------------------------------------------+ + | Copyright (c) 1997-2013 The PHP Group | + +----------------------------------------------------------------------+ + | This source file is subject to version 3.0 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_0.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: Ilia Alshanetsky <ilia@php.net> | + +----------------------------------------------------------------------+ +*/ + +/* $Id$ */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include "php.h" + +#include <magic.h> +/* + * HOWMANY specifies the maximum offset libmagic will look at + * this is currently hardcoded in the libmagic source but not exported + */ +#ifndef HOWMANY +#define HOWMANY 65536 +#endif + +#include "php_ini.h" +#include "ext/standard/info.h" +#include "ext/standard/file.h" /* needed for context stuff */ +#include "php_fileinfo.h" +#include "fopen_wrappers.h" /* needed for is_url */ + +#ifndef _S_IFDIR +# define _S_IFDIR S_IFDIR +#endif + +/* {{{ macros and type definitions */ +struct php_fileinfo { + long options; + struct magic_set *magic; +}; + +static zend_object_handlers finfo_object_handlers; +zend_class_entry *finfo_class_entry; + +struct finfo_object { + zend_object zo; + struct php_fileinfo *ptr; +}; + +#define FILEINFO_DECLARE_INIT_OBJECT(object) \ + zval *object = getThis(); + +#define FILEINFO_REGISTER_OBJECT(_object, _ptr) \ +{ \ + struct finfo_object *obj; \ + obj = (struct finfo_object*)zend_object_store_get_object(_object TSRMLS_CC); \ + obj->ptr = _ptr; \ +} + +#define FILEINFO_FROM_OBJECT(finfo, object) \ +{ \ + struct finfo_object *obj = zend_object_store_get_object(object TSRMLS_CC); \ + finfo = obj->ptr; \ + if (!finfo) { \ + php_error_docref(NULL TSRMLS_CC, E_WARNING, "The invalid fileinfo object."); \ + RETURN_FALSE; \ + } \ +} + +/* {{{ finfo_objects_free + */ +static void finfo_objects_free(void *object TSRMLS_DC) +{ + struct finfo_object *intern = (struct finfo_object *) object; + + if (intern->ptr) { + magic_close(intern->ptr->magic); + efree(intern->ptr); + } + + zend_object_std_dtor(&intern->zo TSRMLS_CC); + efree(intern); +} +/* }}} */ + +/* {{{ finfo_objects_new + */ +PHP_FILEINFO_API zend_object_value finfo_objects_new(zend_class_entry *class_type TSRMLS_DC) +{ + zend_object_value retval; + struct finfo_object *intern; + + intern = emalloc(sizeof(struct finfo_object)); + memset(intern, 0, sizeof(struct finfo_object)); + + zend_object_std_init(&intern->zo, class_type TSRMLS_CC); + object_properties_init(&intern->zo, class_type); + + intern->ptr = NULL; + + retval.handle = zend_objects_store_put(intern, NULL, + finfo_objects_free, NULL TSRMLS_CC); + retval.handlers = (zend_object_handlers *) &finfo_object_handlers; + + return retval; +} +/* }}} */ + +/* {{{ arginfo */ +ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_open, 0, 0, 0) + ZEND_ARG_INFO(0, options) + ZEND_ARG_INFO(0, arg) +ZEND_END_ARG_INFO() + +ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_close, 0, 0, 1) + ZEND_ARG_INFO(0, finfo) +ZEND_END_ARG_INFO() + +ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_set_flags, 0, 0, 2) + ZEND_ARG_INFO(0, finfo) + ZEND_ARG_INFO(0, options) +ZEND_END_ARG_INFO() + +ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_method_set_flags, 0, 0, 1) + ZEND_ARG_INFO(0, options) +ZEND_END_ARG_INFO() + +ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_file, 0, 0, 2) + ZEND_ARG_INFO(0, finfo) + ZEND_ARG_INFO(0, filename) + ZEND_ARG_INFO(0, options) + ZEND_ARG_INFO(0, context) +ZEND_END_ARG_INFO() + +ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_method_file, 0, 0, 1) + ZEND_ARG_INFO(0, filename) + ZEND_ARG_INFO(0, options) + ZEND_ARG_INFO(0, context) +ZEND_END_ARG_INFO() + +ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_buffer, 0, 0, 2) + ZEND_ARG_INFO(0, finfo) + ZEND_ARG_INFO(0, string) + ZEND_ARG_INFO(0, options) + ZEND_ARG_INFO(0, context) +ZEND_END_ARG_INFO() + +ZEND_BEGIN_ARG_INFO_EX(arginfo_finfo_method_buffer, 0, 0, 1) + ZEND_ARG_INFO(0, string) + ZEND_ARG_INFO(0, options) + ZEND_ARG_INFO(0, context) +ZEND_END_ARG_INFO() + +ZEND_BEGIN_ARG_INFO_EX(arginfo_mime_content_type, 0, 0, 1) + ZEND_ARG_INFO(0, string) +ZEND_END_ARG_INFO() +/* }}} */ + +/* {{{ finfo_class_functions + */ +zend_function_entry finfo_class_functions[] = { + ZEND_ME_MAPPING(finfo, finfo_open, arginfo_finfo_open, ZEND_ACC_PUBLIC) + ZEND_ME_MAPPING(set_flags, finfo_set_flags,arginfo_finfo_method_set_flags, ZEND_ACC_PUBLIC) + ZEND_ME_MAPPING(file, finfo_file, arginfo_finfo_method_file, ZEND_ACC_PUBLIC) + ZEND_ME_MAPPING(buffer, finfo_buffer, arginfo_finfo_method_buffer, ZEND_ACC_PUBLIC) + PHP_FE_END +}; +/* }}} */ + +#define FINFO_SET_OPTION(magic, options) \ + if (magic_setflags(magic, options) == -1) { \ + php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to set option '%ld' %d:%s", \ + options, magic_errno(magic), magic_error(magic)); \ + RETURN_FALSE; \ + } + +/* True global resources - no need for thread safety here */ +static int le_fileinfo; +/* }}} */ + +void finfo_resource_destructor(zend_rsrc_list_entry *rsrc TSRMLS_DC) /* {{{ */ +{ + if (rsrc->ptr) { + struct php_fileinfo *finfo = (struct php_fileinfo *) rsrc->ptr; + magic_close(finfo->magic); + efree(rsrc->ptr); + rsrc->ptr = NULL; + } +} +/* }}} */ + + +/* {{{ fileinfo_functions[] + */ +zend_function_entry fileinfo_functions[] = { + PHP_FE(finfo_open, arginfo_finfo_open) + PHP_FE(finfo_close, arginfo_finfo_close) + PHP_FE(finfo_set_flags, arginfo_finfo_set_flags) + PHP_FE(finfo_file, arginfo_finfo_file) + PHP_FE(finfo_buffer, arginfo_finfo_buffer) + PHP_FE(mime_content_type, arginfo_mime_content_type) + {NULL, NULL, NULL} +}; +/* }}} */ + +/* {{{ PHP_MINIT_FUNCTION + */ +PHP_MINIT_FUNCTION(finfo) +{ + zend_class_entry _finfo_class_entry; + INIT_CLASS_ENTRY(_finfo_class_entry, "finfo", finfo_class_functions); + _finfo_class_entry.create_object = finfo_objects_new; + finfo_class_entry = zend_register_internal_class(&_finfo_class_entry TSRMLS_CC); + + /* copy the standard object handlers to you handler table */ + memcpy(&finfo_object_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers)); + + le_fileinfo = zend_register_list_destructors_ex(finfo_resource_destructor, NULL, "file_info", module_number); + + REGISTER_LONG_CONSTANT("FILEINFO_NONE", MAGIC_NONE, CONST_CS|CONST_PERSISTENT); + REGISTER_LONG_CONSTANT("FILEINFO_SYMLINK", MAGIC_SYMLINK, CONST_CS|CONST_PERSISTENT); + REGISTER_LONG_CONSTANT("FILEINFO_MIME", MAGIC_MIME, CONST_CS|CONST_PERSISTENT); + REGISTER_LONG_CONSTANT("FILEINFO_MIME_TYPE", MAGIC_MIME_TYPE, CONST_CS|CONST_PERSISTENT); + REGISTER_LONG_CONSTANT("FILEINFO_MIME_ENCODING",MAGIC_MIME_ENCODING, CONST_CS|CONST_PERSISTENT); +/* REGISTER_LONG_CONSTANT("FILEINFO_COMPRESS", MAGIC_COMPRESS, CONST_CS|CONST_PERSISTENT); disabled, as it does fork now */ + REGISTER_LONG_CONSTANT("FILEINFO_DEVICES", MAGIC_DEVICES, CONST_CS|CONST_PERSISTENT); + REGISTER_LONG_CONSTANT("FILEINFO_CONTINUE", MAGIC_CONTINUE, CONST_CS|CONST_PERSISTENT); +#ifdef MAGIC_PRESERVE_ATIME + REGISTER_LONG_CONSTANT("FILEINFO_PRESERVE_ATIME", MAGIC_PRESERVE_ATIME, CONST_CS|CONST_PERSISTENT); +#endif +#ifdef MAGIC_RAW + REGISTER_LONG_CONSTANT("FILEINFO_RAW", MAGIC_RAW, CONST_CS|CONST_PERSISTENT); +#endif + + return SUCCESS; +} +/* }}} */ + +/* {{{ fileinfo_module_entry + */ +zend_module_entry fileinfo_module_entry = { + STANDARD_MODULE_HEADER, + "fileinfo", + fileinfo_functions, + PHP_MINIT(finfo), + NULL, + NULL, + NULL, + PHP_MINFO(fileinfo), + PHP_FILEINFO_VERSION, + STANDARD_MODULE_PROPERTIES +}; +/* }}} */ + +#ifdef COMPILE_DL_FILEINFO +ZEND_GET_MODULE(fileinfo) +#endif + +/* {{{ PHP_MINFO_FUNCTION + */ +PHP_MINFO_FUNCTION(fileinfo) +{ + php_info_print_table_start(); + php_info_print_table_row(2, "fileinfo support", "enabled"); + php_info_print_table_row(2, "version", PHP_FILEINFO_VERSION); + php_info_print_table_end(); +} +/* }}} */ + +#define FILEINFO_DESTROY_OBJECT(object) \ + do { \ + if (object) { \ + zend_object_store_ctor_failed(object TSRMLS_CC); \ + zval_dtor(object); \ + ZVAL_NULL(object); \ + } \ + } while (0) + +/* {{{ proto resource finfo_open([int options [, string arg]]) + Create a new fileinfo resource. */ +PHP_FUNCTION(finfo_open) +{ + long options = MAGIC_NONE; + char *file = NULL; + int file_len = 0; + struct php_fileinfo *finfo; + FILEINFO_DECLARE_INIT_OBJECT(object) + char resolved_path[MAXPATHLEN]; + + if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|lp", &options, &file, &file_len) == FAILURE) { + FILEINFO_DESTROY_OBJECT(object); + RETURN_FALSE; + } + + if (object) { + struct finfo_object *finfo_obj = (struct finfo_object*)zend_object_store_get_object(object TSRMLS_CC); + + if (finfo_obj->ptr) { + magic_close(finfo_obj->ptr->magic); + efree(finfo_obj->ptr); + finfo_obj->ptr = NULL; + } + } + + if (file_len == 0) { + file = NULL; + } else if (file && *file) { /* user specified file, perform open_basedir checks */ + +#if PHP_API_VERSION < 20100412 + if ((PG(safe_mode) && (!php_checkuid(file, NULL, CHECKUID_CHECK_FILE_AND_DIR))) || php_check_open_basedir(file TSRMLS_CC)) { +#else + if (php_check_open_basedir(file TSRMLS_CC)) { +#endif + FILEINFO_DESTROY_OBJECT(object); + RETURN_FALSE; + } + if (!expand_filepath_with_mode(file, resolved_path, NULL, 0, CWD_EXPAND TSRMLS_CC)) { + FILEINFO_DESTROY_OBJECT(object); + RETURN_FALSE; + } + file = resolved_path; + } + + finfo = emalloc(sizeof(struct php_fileinfo)); + + finfo->options = options; + finfo->magic = magic_open(options); + + if (finfo->magic == NULL) { + efree(finfo); + php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid mode '%ld'.", options); + FILEINFO_DESTROY_OBJECT(object); + RETURN_FALSE; + } + + if (magic_load(finfo->magic, file) == -1) { + php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to load magic database at '%s'.", file); + magic_close(finfo->magic); + efree(finfo); + FILEINFO_DESTROY_OBJECT(object); + RETURN_FALSE; + } + + if (object) { + FILEINFO_REGISTER_OBJECT(object, finfo); + } else { + ZEND_REGISTER_RESOURCE(return_value, finfo, le_fileinfo); + } +} +/* }}} */ + +/* {{{ proto resource finfo_close(resource finfo) + Close fileinfo resource. */ +PHP_FUNCTION(finfo_close) +{ + struct php_fileinfo *finfo; + zval *zfinfo; + + if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &zfinfo) == FAILURE) { + RETURN_FALSE; + } + ZEND_FETCH_RESOURCE(finfo, struct php_fileinfo *, &zfinfo, -1, "file_info", le_fileinfo); + + zend_list_delete(Z_RESVAL_P(zfinfo)); + + RETURN_TRUE; +} +/* }}} */ + +/* {{{ proto bool finfo_set_flags(resource finfo, int options) + Set libmagic configuration options. */ +PHP_FUNCTION(finfo_set_flags) +{ + long options; + struct php_fileinfo *finfo; + zval *zfinfo; + FILEINFO_DECLARE_INIT_OBJECT(object) + + if (object) { + if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &options) == FAILURE) { + RETURN_FALSE; + } + FILEINFO_FROM_OBJECT(finfo, object); + } else { + if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rl", &zfinfo, &options) == FAILURE) { + RETURN_FALSE; + } + ZEND_FETCH_RESOURCE(finfo, struct php_fileinfo *, &zfinfo, -1, "file_info", le_fileinfo); + } + + FINFO_SET_OPTION(finfo->magic, options) + finfo->options = options; + + RETURN_TRUE; +} +/* }}} */ + +#define FILEINFO_MODE_BUFFER 0 +#define FILEINFO_MODE_STREAM 1 +#define FILEINFO_MODE_FILE 2 + +static void _php_finfo_get_type(INTERNAL_FUNCTION_PARAMETERS, int mode, int mimetype_emu) /* {{{ */ +{ + long options = 0; + char *ret_val = NULL, *buffer = NULL; + int buffer_len; + struct php_fileinfo *finfo = NULL; + zval *zfinfo, *zcontext = NULL; + zval *what; + char mime_directory[] = "directory"; + + struct magic_set *magic = NULL; + FILEINFO_DECLARE_INIT_OBJECT(object) + + if (mimetype_emu) { + + /* mime_content_type(..) emulation */ + if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &what) == FAILURE) { + return; + } + + switch (Z_TYPE_P(what)) { + case IS_STRING: + buffer = Z_STRVAL_P(what); + buffer_len = Z_STRLEN_P(what); + mode = FILEINFO_MODE_FILE; + break; + + case IS_RESOURCE: + mode = FILEINFO_MODE_STREAM; + break; + + default: + php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can only process string or stream arguments"); + RETURN_FALSE; + } + + magic = magic_open(MAGIC_MIME_TYPE); + if (magic_load(magic, NULL) == -1) { + php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to load magic database."); + goto common; + } + } else if (object) { + if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|lr", &buffer, &buffer_len, &options, &zcontext) == FAILURE) { + RETURN_FALSE; + } + FILEINFO_FROM_OBJECT(finfo, object); + magic = finfo->magic; + } else { + if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rs|lr", &zfinfo, &buffer, &buffer_len, &options, &zcontext) == FAILURE) { + RETURN_FALSE; + } + ZEND_FETCH_RESOURCE(finfo, struct php_fileinfo *, &zfinfo, -1, "file_info", le_fileinfo); + magic = finfo->magic; + } + + /* Set options for the current file/buffer. */ + if (options) { + FINFO_SET_OPTION(magic, options) + } + + switch (mode) { + case FILEINFO_MODE_BUFFER: + { + ret_val = (char *) magic_buffer(magic, buffer, buffer_len); + break; + } + + case FILEINFO_MODE_STREAM: + { + php_stream *stream; + off_t streampos; + + php_stream_from_zval_no_verify(stream, &what); + if (!stream) { + goto common; + } + + streampos = php_stream_tell(stream); /* remember stream position for restoration */ + php_stream_seek(stream, 0, SEEK_SET); + + ret_val = (char *) magic_stream(magic, stream); + + php_stream_seek(stream, streampos, SEEK_SET); + break; + } + + case FILEINFO_MODE_FILE: + { + /* determine if the file is a local file or remote URL */ + char *tmp2; + php_stream_wrapper *wrap; + php_stream_statbuf ssb; + + if (buffer == NULL || !*buffer) { + php_error_docref(NULL TSRMLS_CC, E_WARNING, "Empty filename or path"); + RETVAL_FALSE; + goto clean; + } + + wrap = php_stream_locate_url_wrapper(buffer, &tmp2, 0 TSRMLS_CC); + + if (wrap) { + php_stream *stream; + php_stream_context *context = php_stream_context_from_zval(zcontext, 0); + +#ifdef PHP_WIN32 + if (php_stream_stat_path_ex(buffer, 0, &ssb, context) == SUCCESS) { + if (ssb.sb.st_mode & S_IFDIR) { + ret_val = mime_directory; + goto common; + } + } +#endif + +#if PHP_API_VERSION < 20100412 + stream = php_stream_open_wrapper_ex(buffer, "rb", ENFORCE_SAFE_MODE | REPORT_ERRORS, NULL, context); +#else + stream = php_stream_open_wrapper_ex(buffer, "rb", REPORT_ERRORS, NULL, context); +#endif + + if (!stream) { + RETVAL_FALSE; + goto clean; + } + + if (php_stream_stat(stream, &ssb) == SUCCESS) { + if (ssb.sb.st_mode & S_IFDIR) { + ret_val = mime_directory; + } else { + ret_val = (char *)magic_stream(magic, stream); + } + } + + php_stream_close(stream); + } + break; + } + + default: + php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can only process string or stream arguments"); + } + +common: + if (ret_val) { + RETVAL_STRING(ret_val, 1); + } else { + php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed identify data %d:%s", magic_errno(magic), magic_error(magic)); + RETVAL_FALSE; + } + +clean: + if (mimetype_emu) { + magic_close(magic); + } + + /* Restore options */ + if (options) { + FINFO_SET_OPTION(magic, finfo->options) + } + return; +} +/* }}} */ + +/* {{{ proto string finfo_file(resource finfo, char *file_name [, int options [, resource context]]) + Return information about a file. */ +PHP_FUNCTION(finfo_file) +{ + _php_finfo_get_type(INTERNAL_FUNCTION_PARAM_PASSTHRU, FILEINFO_MODE_FILE, 0); +} +/* }}} */ + +/* {{{ proto string finfo_buffer(resource finfo, char *string [, int options [, resource context]]) + Return infromation about a string buffer. */ +PHP_FUNCTION(finfo_buffer) +{ + _php_finfo_get_type(INTERNAL_FUNCTION_PARAM_PASSTHRU, FILEINFO_MODE_BUFFER, 0); +} +/* }}} */ + +/* {{{ proto string mime_content_type(string filename|resource stream) + Return content-type for file */ +PHP_FUNCTION(mime_content_type) +{ + _php_finfo_get_type(INTERNAL_FUNCTION_PARAM_PASSTHRU, -1, 1); +} +/* }}} */ + + +/* + * Local variables: + * tab-width: 4 + * c-basic-offset: 4 + * End: + * vim600: noet sw=4 ts=4 fdm=marker + * vim<600: noet sw=4 ts=4 + */ |