X-Git-Url: https://git.m6w6.name/?p=m6w6%2Fext-psi;a=blobdiff_plain;f=src%2Fmodule.c;h=5ff4b50e3b4ef5035a468101f00012b892908fb5;hp=c45ddb0014ec0908c55c795b151aea6b3a9b285a;hb=c0873cbbe9e5a83305adbc2bbd94aede5437f33d;hpb=f1a387482a9270a34ae684109ad8be7c104148d6 diff --git a/src/module.c b/src/module.c index c45ddb0..5ff4b50 100644 --- a/src/module.c +++ b/src/module.c @@ -1,93 +1,518 @@ +/******************************************************************************* + Copyright (c) 2016, Michael Wallner . + All rights reserved. -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*******************************************************************************/ -#include +#include "php_psi_stdinc.h" #include "php.h" #include "php_ini.h" #include "ext/standard/info.h" +#include "zend_constants.h" +#include "zend_operators.h" + #include "php_psi.h" +#include "token.h" +#include "parser.h" +#include "cpp.h" + +#define PSI_CPP_SEARCH +#include "php_psi_cpp.h" + +#if HAVE_LIBJIT +# include "libjit.h" +# ifndef HAVE_LIBFFI +# define PSI_ENGINE "jit" +# endif +#endif +#if HAVE_LIBFFI +# include "libffi.h" +# define PSI_ENGINE "ffi" +#endif ZEND_DECLARE_MODULE_GLOBALS(psi); +//#define ZEND_INI_MH(name) int name(zend_ini_entry *entry, zend_string *new_value, void *mh_arg1, void *mh_arg2, void *mh_arg3, int stage) + +static void OnUpdateBlacklist(const char *str, void (*cb)(const char*, size_t)) +{ + const char *end; + + do { + size_t len; + + end = strchr(str, ','); + if (end) { + len = end - str; + } else { + len = strlen(str); + } + if (len) { + cb(str, len); + } + + str = end + 1; + } while (end); +} + +static void psi_blacklist_add_decl(const char *pattern, size_t len); +static ZEND_INI_MH(OnUpdateBlacklistedDecls) +{ + OnUpdateBlacklist(new_value->val, psi_blacklist_add_decl); + return SUCCESS; +} + +static void psi_blacklist_add_var(const char *pattern, size_t len); +static ZEND_INI_MH(OnUpdateBlacklistedVars) +{ + OnUpdateBlacklist(new_value->val, psi_blacklist_add_var); + return SUCCESS; +} + +static void OnDisplayBlacklist(struct psi_plist *bl) +{ + size_t i = 0; + char *item; + + while (psi_plist_get(bl, i++, &item)) { + if (i > 1) { + PUTS(","); + } + PUTS(item); + } +} +static ZEND_INI_DISP(OnDisplayBlacklistedDecls) +{ + OnDisplayBlacklist(PSI_G(blacklist).decls); +} +static ZEND_INI_DISP(OnDisplayBlacklistedVars) +{ + OnDisplayBlacklist(PSI_G(blacklist).vars); +} + PHP_INI_BEGIN() - STD_PHP_INI_ENTRY("psi.directory", "psis", PHP_INI_ALL, OnUpdateString, directory, zend_psi_globals, psi_globals) + STD_PHP_INI_ENTRY("psi.engine", PSI_ENGINE, PHP_INI_SYSTEM, OnUpdateString, engine, zend_psi_globals, psi_globals) + STD_PHP_INI_ENTRY("psi.directory", "psi.d", PHP_INI_SYSTEM, OnUpdateString, directory, zend_psi_globals, psi_globals) + PHP_INI_ENTRY_EX("psi.blacklist.decls", "", PHP_INI_SYSTEM, OnUpdateBlacklistedDecls, OnDisplayBlacklistedDecls) + PHP_INI_ENTRY_EX("psi.blacklist.vars", "", PHP_INI_SYSTEM, OnUpdateBlacklistedVars, OnDisplayBlacklistedVars) PHP_INI_END(); -PHP_MINIT_FUNCTION(psi) +static zend_object_handlers psi_object_handlers; +static zend_class_entry *psi_class_entry; + +zend_class_entry *psi_object_get_class_entry() { - jit_context_t ctx; + return psi_class_entry; +} - REGISTER_INI_ENTRIES(); +static void psi_object_free(zend_object *o) +{ + psi_object *obj = PSI_OBJ(NULL, o); - jit_init(); + if (obj->data) { + if (obj->dtor) { + obj->dtor(obj->data); + } + obj->data = NULL; + } + zend_object_std_dtor(o); +} - if (!(ctx = jit_context_create())) { - zend_error(E_WARNING, "Could not initialize libjit!"); - return FAILURE; +zend_object *psi_object_init_ex(zend_class_entry *ce, void *data, void (*dtor)(void *)) +{ + psi_object *o; + + if (!ce) { + ce = psi_class_entry; + } + + o = ecalloc(1, sizeof(*o) + zend_object_properties_size(ce)); + + o->data = data; + o->dtor = dtor; + + zend_object_std_init(&o->std, ce); + object_properties_init(&o->std, ce); + o->std.handlers = &psi_object_handlers; + return &o->std; +} + +zend_object *psi_object_init(zend_class_entry *ce) +{ + return psi_object_init_ex(ce, NULL, NULL); +} + +ZEND_BEGIN_ARG_INFO_EX(ai_psi_dump, 0, 0, 0) + ZEND_ARG_INFO(0, stream) +ZEND_END_ARG_INFO(); +static PHP_FUNCTION(psi_dump) +{ + php_stream *s; + zval *r = NULL; + int fd = STDOUT_FILENO; + + if (SUCCESS != zend_parse_parameters(ZEND_NUM_ARGS(), "|r!", &r)) { + return; + } + if (r) { + php_stream_from_zval(s, r); + + if (SUCCESS != php_stream_cast(s, PHP_STREAM_AS_FD | PHP_STREAM_CAST_INTERNAL, (void **)&fd, 1)) { + RETURN_FALSE; + } + } + psi_context_dump(PSI_G(context), fd); +} + +ZEND_BEGIN_ARG_INFO_EX(ai_psi_validate, 0, 0, 1) + ZEND_ARG_INFO(0, file) + ZEND_ARG_INFO(0, flags) + ZEND_ARG_INFO(1, errcnt) +ZEND_END_ARG_INFO(); +static PHP_FUNCTION(psi_validate) +{ + zend_string *file; + struct psi_parser_input *I; + struct psi_parser P; + struct psi_data D = {0}; + struct psi_validate_scope S = {0}; + zend_long flags = 0; + zval *errcnt = NULL; + +#if PHP_DEBUG + if (psi_check_env("PSI_DEBUG")) { + flags |= PSI_DEBUG; + } +#endif + + if (SUCCESS != zend_parse_parameters(ZEND_NUM_ARGS(), "P|lz", &file, &flags, &errcnt)) { + return; + } + + if (!psi_parser_init(&P, psi_error_wrapper, flags)) { + RETURN_FALSE; + } + if (!(I = psi_parser_open_file(&P, file->val, true))) { + psi_parser_dtor(&P); + RETURN_FALSE; + } + + psi_parser_parse(&P, I); + psi_data_ctor(&D, P.error, P.flags); + psi_validate_scope_ctor(&S); + S.defs = &P.preproc->defs; + + RETVAL_BOOL(psi_validate(&S, &D, PSI_DATA(&P))); + + if (errcnt) { + ZVAL_DEREF(errcnt); + convert_to_long(errcnt); + ZVAL_LONG(errcnt, P.errors); + } + + psi_validate_scope_dtor(&S); + psi_data_dtor(&D); + psi_parser_dtor(&P); + psi_parser_input_free(&I); +} + +ZEND_BEGIN_ARG_INFO_EX(ai_psi_validate_string, 0, 0, 1) + ZEND_ARG_INFO(0, string) + ZEND_ARG_INFO(0, flags) + ZEND_ARG_INFO(1, errcnt) +ZEND_END_ARG_INFO(); +static PHP_FUNCTION(psi_validate_string) +{ + zend_string *string; + struct psi_parser_input *I; + struct psi_parser P; + struct psi_data D = {0}; + struct psi_validate_scope S = {0}; + zend_long flags = 0; + zval *errcnt = NULL; + +#if PHP_DEBUG + if (psi_check_env("PSI_DEBUG")) { + flags |= PSI_DEBUG; + } +#endif + + if (SUCCESS != zend_parse_parameters(ZEND_NUM_ARGS(), "S|lz", &string, &flags, &errcnt)) { + return; + } + + if (!psi_parser_init(&P, psi_error_wrapper, flags)) { + RETURN_FALSE; + } + if (!(I = psi_parser_open_string(&P, string->val, string->len))) { + psi_parser_dtor(&P); + RETURN_FALSE; } - PSI_G(context) = ctx; + psi_parser_parse(&P, I); + psi_data_ctor(&D, P.error, P.flags); + psi_validate_scope_ctor(&S); + S.defs = &P.preproc->defs; + RETVAL_BOOL(psi_validate(&S, &D, PSI_DATA(&P))); + + if (errcnt) { + ZVAL_DEREF(errcnt); + convert_to_long(errcnt); + ZVAL_LONG(errcnt, P.errors); + } + + psi_validate_scope_dtor(&S); + psi_data_dtor(&D); + psi_parser_dtor(&P); + psi_parser_input_free(&I); +} + +static ZEND_RESULT_CODE psi_ops_load() +{ + struct psi_context_ops *ops = NULL; +#ifdef HAVE_LIBJIT + if (!strcasecmp(PSI_G(engine), "jit")) { + ops = psi_libjit_ops(); + } else +#endif +#ifdef HAVE_LIBFFI + ops = psi_libffi_ops(); +#endif + + if (!ops) { + php_error(E_WARNING, "No PSI engine found"); + return FAILURE; + } + + PSI_G(ops) = ops; + if (ops->load) { + return ops->load(); + } return SUCCESS; } -PHP_MSHUTDOWN_FUNCTION(psi) + +PHP_MINIT_FUNCTION(psi_cpp); +static PHP_MINIT_FUNCTION(psi) { - jit_context_t *ctx = PSI_G(context); + zend_class_entry ce = {0}; + unsigned flags = 0; - jit_context_destroy(ctx); - - UNREGISTER_INI_ENTRIES(); + REGISTER_INI_ENTRIES(); + + zend_register_long_constant(ZEND_STRL("PSI_DEBUG"), PSI_DEBUG, CONST_CS|CONST_PERSISTENT, module_number); + zend_register_long_constant(ZEND_STRL("PSI_SILENT"), PSI_SILENT, CONST_CS|CONST_PERSISTENT, module_number); + + INIT_NS_CLASS_ENTRY(ce, "psi", "object", NULL); + psi_class_entry = zend_register_internal_class_ex(&ce, NULL); + psi_class_entry->create_object = psi_object_init; + + memcpy(&psi_object_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers)); + psi_object_handlers.offset = XtOffsetOf(psi_object, std); + psi_object_handlers.free_obj = psi_object_free; + psi_object_handlers.clone_obj = NULL; + + if (SUCCESS != PHP_MINIT(psi_cpp)(type, module_number)) { + return FAILURE; + } + + if (SUCCESS != psi_ops_load()) { + return FAILURE; + } + + if (psi_check_env("PSI_DEBUG")) { + flags |= PSI_DEBUG; + } + if (psi_check_env("PSI_SILENT")) { + flags |= PSI_SILENT; + } + + PSI_G(search_path) = pemalloc(strlen(PSI_G(directory)) + strlen(psi_cpp_search) + 1 + 1, 1); + sprintf(PSI_G(search_path), "%s:%s", PSI_G(directory), psi_cpp_search); + + PSI_G(context) = psi_context_init(NULL, PSI_G(ops), psi_error_wrapper, flags); + psi_context_build(PSI_G(context), PSI_G(directory)); return SUCCESS; } -/* Remove if there's nothing to do at request start */ -/* {{{ PHP_RINIT_FUNCTION - */ -PHP_RINIT_FUNCTION(psi) +PHP_MSHUTDOWN_FUNCTION(psi_cpp); +static PHP_MSHUTDOWN_FUNCTION(psi) { -#if defined(COMPILE_DL_PSI) && defined(ZTS) - ZEND_TSRMLS_CACHE_UPDATE(); -#endif + if (psi_check_env("PSI_DUMP")) { + psi_context_dump(PSI_G(context), STDOUT_FILENO); + } + + psi_context_free(&PSI_G(context)); + + if (PSI_G(ops)->free) { + PSI_G(ops)->free(); + } + + PHP_MSHUTDOWN(psi_cpp)(type, module_number); + + UNREGISTER_INI_ENTRIES(); + return SUCCESS; } -/* }}} */ -/* Remove if there's nothing to do at request end */ -/* {{{ PHP_RSHUTDOWN_FUNCTION - */ -PHP_RSHUTDOWN_FUNCTION(psi) +#if defined(COMPILE_DL_PSI) && defined(ZTS) +static PHP_RINIT_FUNCTION(psi) { + ZEND_TSRMLS_CACHE_UPDATE(); return SUCCESS; } -/* }}} */ +#endif -PHP_MINFO_FUNCTION(psi) +static PHP_MINFO_FUNCTION(psi) { php_info_print_table_start(); - php_info_print_table_header(2, "psi support", "enabled"); + php_info_print_table_header(2, "PSI Support", "enabled"); + php_info_print_table_row(2, "Extension Version", PHP_PSI_VERSION); + php_info_print_table_row(2, "Search Path", PSI_G(search_path)); php_info_print_table_end(); + php_info_print_table_start(); + php_info_print_table_header(3, "Used Library", "Compiled", "Linked"); + php_info_print_table_row(3, "libffi", +#ifndef PHP_PSI_LIBFFI_VERSION +# define PHP_PSI_LIBFFI_VERSION "unknown" +#endif +#ifdef HAVE_LIBFFI + PHP_PSI_LIBFFI_VERSION, "unknown" +#else + "disabled", "disabled" +#endif + ); + php_info_print_table_row(3, "libjit", +#ifdef HAVE_LIBJIT + "unknown", "unknown" +#else + "disabled", "disabled" +#endif + ); + DISPLAY_INI_ENTRIES(); } -const zend_function_entry psi_functions[] = { + +static void ptr_free(void *ptr) +{ + free(*(void **) ptr); +} + +static void psi_blacklist_add_decl(const char *pattern, size_t len) +{ + char *tmp = strndup(pattern, len); + struct psi_plist **decls = &PSI_G(blacklist).decls; + + *decls = psi_plist_add(*decls, &tmp); +} + +static void psi_blacklist_add_var(const char *pattern, size_t len) +{ + char *tmp = strndup(pattern, len); + struct psi_plist **vars = &PSI_G(blacklist).vars; + + *vars = psi_plist_add(*vars, &tmp); +} + +static PHP_GINIT_FUNCTION(psi) +{ + char *tmp; + struct psi_plist **bl_decls = &psi_globals->blacklist.decls; + struct psi_plist **bl_vars = &psi_globals->blacklist.vars; + + *bl_decls = psi_plist_init(ptr_free); + *bl_vars = psi_plist_init(ptr_free); + +#define BL_ADD(D, d) \ + tmp = strdup(d); \ + *D = psi_plist_add(*D, &tmp) +#define BL_DECL_ADD(d) BL_ADD(bl_decls, d) +#define BL_VAR_ADD(d) BL_ADD(bl_vars, d) + + BL_DECL_ADD("dlsym"); + BL_DECL_ADD("alloca"); + BL_DECL_ADD("atexit"); + BL_DECL_ADD("at_quick_exit"); + + /* missing */ + BL_DECL_ADD("_IO_cookie_init"); + BL_DECL_ADD("bindresvport6"); + + /* va_list as arg */ + BL_DECL_ADD("*v*printf"); + BL_DECL_ADD("*v*scanf"); + BL_DECL_ADD("vsyslog"); + + /* LFS/LFO for 32bit */ + BL_DECL_ADD("*stat*64"); + BL_DECL_ADD("*glob*64"); + /* Hurd only */ + BL_DECL_ADD("getumask"); + + /* using hidden structs */ + BL_VAR_ADD("_IO_2_*"); +} + +static PHP_GSHUTDOWN_FUNCTION(psi) +{ + psi_plist_free(psi_globals->blacklist.decls); +} + +static const zend_function_entry psi_functions[] = { + PHP_FE(psi_dump, ai_psi_dump) + PHP_FE(psi_validate, ai_psi_validate) + PHP_FE(psi_validate_string, ai_psi_validate_string) PHP_FE_END }; +static const zend_module_dep psi_deps[] = { + ZEND_MOD_REQUIRED("standard") + {0} +}; + zend_module_entry psi_module_entry = { - STANDARD_MODULE_HEADER, + STANDARD_MODULE_HEADER_EX, + NULL, + psi_deps, "psi", psi_functions, PHP_MINIT(psi), PHP_MSHUTDOWN(psi), +#if defined(COMPILE_DL_PSI) && defined(ZTS) PHP_RINIT(psi), /* Replace with NULL if there's nothing to do at request start */ - PHP_RSHUTDOWN(psi), /* Replace with NULL if there's nothing to do at request end */ +#else + NULL, +#endif + NULL, PHP_MINFO(psi), PHP_PSI_VERSION, - STANDARD_MODULE_PROPERTIES + ZEND_MODULE_GLOBALS(psi), + PHP_GINIT(psi), + PHP_GSHUTDOWN(psi), + NULL, /* post-deactivate */ + STANDARD_MODULE_PROPERTIES_EX }; #ifdef COMPILE_DL_PSI