git.m6w6.name Git - m6w6/ext-psi/blob - src/context.c

   1 /*******************************************************************************
   2  Copyright (c) 2016, Michael Wallner <mike@php.net>.
   3  All rights reserved.
   4
   5  Redistribution and use in source and binary forms, with or without
   6  modification, are permitted provided that the following conditions are met:
   7
   8      * Redistributions of source code must retain the above copyright notice,
   9        this list of conditions and the following disclaimer.
  10      * Redistributions in binary form must reproduce the above copyright
  11        notice, this list of conditions and the following disclaimer in the
  12        documentation and/or other materials provided with the distribution.
  13
  14  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  15  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  17  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
  18  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  20  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  21  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  22  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24 *******************************************************************************/
  25
  26 #include "php_psi_stdinc.h"
  27
  28 #include "php.h"
  29
  30 #ifdef HAVE_DIRENT_H
  31 # include <dirent.h>
  32 # define NAMLEN(dirent) strlen ((dirent)->d_name)
  33 #else
  34 # define dirent direct
  35 # define NAMLEN(dirent) ((dirent)->d_namlen)
  36 # ifdef HAVE_SYS_NDIR_H
  37 #  include <sys/ndir.h>
  38 # endif
  39 # ifdef HAVE_SYS_DIR_H
  40 #  include <sys/dir.h>
  41 # endif
  42 # ifdef HAVE_NDIR_H
  43 #  include <ndir.h>
  44 # endif
  45 #endif
  46
  47 #include <fnmatch.h>
  48
  49 #include "php_scandir.h"
  50 #include "php_psi.h"
  51 #include "calc.h"
  52 #include "call.h"
  53 #include "libjit.h"
  54 #include "libffi.h"
  55
  56 #include "token.h"
  57 #include "parser.h"
  58
  59 #include "php_psi_posix.h"
  60
  61 struct psi_context *psi_context_init(struct psi_context *C, struct psi_context_ops *ops, psi_error_cb error, unsigned flags)
  62 {
  63         if (!C) {
  64                 C = malloc(sizeof(*C));
  65         }
  66         memset(C, 0, sizeof(*C));
  67
  68         psi_data_ctor(PSI_DATA(C), error, flags);
  69         C->ops = ops;
  70
  71         if (ops->init) {
  72                 ops->init(C);
  73         }
  74
  75         assert(ops->call != NULL);
  76         assert(ops->compile != NULL);
  77
  78         return C;
  79 }
  80
  81 static int psi_select_dirent(const struct dirent *entry)
  82 {
  83 #ifndef FNM_CASEFOLD
  84 # define FNM_CASEFOLD 0
  85 #endif
  86         return 0 == fnmatch("*.psi", entry->d_name, FNM_CASEFOLD);
  87 }
  88
  89 static bool psi_context_add(struct psi_context *C, struct psi_parser *P)
  90 {
  91         bool valid;
  92         struct psi_data *D;
  93         struct psi_validate_scope scope = {0};
  94
  95         C->data = realloc(C->data, (C->count + 1) * sizeof(*C->data));
  96         D = psi_data_exchange(&C->data[C->count++], PSI_DATA(P));
  97
  98         psi_validate_scope_ctor(&scope);
  99         scope.defs = &P->preproc->defs;
 100         valid = psi_validate(&scope, PSI_DATA(C), D);
 101         psi_validate_scope_dtor(&scope);
 102
 103         return valid;
 104 }
 105
 106 void psi_context_build(struct psi_context *C, const char *paths)
 107 {
 108         int i, n;
 109         char *sep = NULL, *cpy = strdup(paths), *ptr = cpy;
 110         struct dirent **entries;
 111
 112         do {
 113                 sep = strchr(ptr, ':');
 114
 115                 if (sep) {
 116                         *sep = 0;
 117                 }
 118
 119                 entries = NULL;
 120                 n = php_scandir(ptr, &entries, psi_select_dirent, alphasort);
 121
 122                 if (n > 0) {
 123                         for (i = 0; i < n; ++i) {
 124                                 char psi[MAXPATHLEN];
 125                                 struct psi_parser P;
 126                                 struct psi_parser_input *I;
 127
 128                                 if (MAXPATHLEN <= slprintf(psi, MAXPATHLEN, "%s/%s", ptr, entries[i]->d_name)) {
 129                                         C->error(PSI_DATA(C), NULL, PSI_WARNING, "Path to PSI file too long: %s/%s",
 130                                                 ptr, entries[i]->d_name);
 131                                 }
 132                                 if (!psi_parser_init(&P, C->error, C->flags)) {
 133                                         C->error(PSI_DATA(C), NULL, PSI_WARNING, "Failed to init PSI parser (%s): %s",
 134                                                 psi, strerror(errno));
 135                                         continue;
 136                                 }
 137                                 if (!(I = psi_parser_open_file(&P, psi, true))) {
 138                                         C->error(PSI_DATA(C), NULL, PSI_WARNING, "Failed to open PSI file (%s): %s",
 139                                                 psi, strerror(errno));
 140                                         continue;
 141                                 }
 142                                 psi_parser_parse(&P, I);
 143                                 psi_context_add(C, &P);
 144                                 psi_parser_dtor(&P);
 145                                 free(I);
 146                         }
 147                 }
 148
 149                 if (entries) {
 150                         for (i = 0; i < n; ++i) {
 151                                 free(entries[i]);
 152                         }
 153                         free(entries);
 154                 }
 155
 156                 ptr = sep + 1;
 157         } while (sep);
 158
 159
 160         if (psi_context_compile(C) && SUCCESS != zend_register_functions(NULL, C->closures, NULL, MODULE_PERSISTENT)) {
 161                 C->error(PSI_DATA(C), NULL, PSI_WARNING, "Failed to register functions!");
 162         }
 163
 164         free(cpy);
 165 }
 166
 167 zend_function_entry *psi_context_compile(struct psi_context *C)
 168 {
 169         zend_constant zc;
 170
 171         ZEND_CONSTANT_SET_FLAGS(&zc, CONST_CS|CONST_PERSISTENT, EG(current_module)->module_number);
 172
 173         if (C->consts) {
 174                 size_t i = 0;
 175                 struct psi_const *c;
 176
 177                 while (psi_plist_get(C->consts, i++, &c)) {
 178
 179                         if (zend_get_constant_str(c->name, strlen(c->name))) {
 180                                 continue;
 181                         }
 182
 183                         zc.name = zend_string_init(c->name, strlen(c->name), 1);
 184
 185                         switch (c->type->type) {
 186                         case PSI_T_BOOL:
 187                                 ZVAL_BOOL(&zc.value, c->val->ival.zend.bval);
 188                                 break;
 189                         case PSI_T_INT:
 190                                 ZVAL_LONG(&zc.value, c->val->ival.zend.lval);
 191                                 break;
 192                         case PSI_T_FLOAT:
 193                         case PSI_T_DOUBLE:
 194                                 ZVAL_DOUBLE(&zc.value, c->val->ival.dval);
 195                                 break;
 196                         case PSI_T_STRING:
 197                         case PSI_T_QUOTED_STRING:
 198                                 ZVAL_NEW_STR(&zc.value, zend_string_copy(c->val->ival.zend.str));
 199                                 break;
 200                         default:
 201                                 assert(0);
 202                                 break;
 203                         }
 204
 205                         zend_register_constant(&zc);
 206                 }
 207         }
 208
 209         if (C->enums) {
 210                 size_t i = 0;
 211                 struct psi_decl_enum *e;
 212
 213                 while (psi_plist_get(C->enums, i++, &e)) {
 214                         size_t j = 0;
 215                         struct psi_decl_enum_item *item;
 216
 217                         while (psi_plist_get(e->items, j++, &item)) {
 218                                 zend_string *name;
 219
 220                                 if (psi_decl_type_is_anon(e->name, "enum")) {
 221                                         name = strpprintf(0, "psi\\%s", item->name);
 222                                 } else {
 223                                         name = strpprintf(0, "psi\\%s\\%s", e->name, item->name);
 224                                 }
 225
 226                                 if (zend_get_constant(name)) {
 227                                         zend_string_release(name);
 228                                         continue;
 229                                 }
 230
 231                                 zc.name = zend_string_dup(name, 1);
 232                                 ZVAL_LONG(&zc.value, psi_num_exp_get_long(item->num, NULL, NULL));
 233                                 zend_register_constant(&zc);
 234                                 zend_string_release(name);
 235                         }
 236                 }
 237         }
 238
 239         return C->closures = C->ops->compile(C);
 240 }
 241
 242
 243 ZEND_RESULT_CODE psi_context_call(struct psi_context *C, zend_execute_data *execute_data, zval *return_value, struct psi_impl *impl)
 244 {
 245         struct psi_call_frame *frame;
 246
 247         frame = psi_call_frame_init(C, impl->decl, impl);
 248
 249         if (SUCCESS != psi_call_frame_parse_args(frame, execute_data)) {
 250                 psi_call_frame_free(frame);
 251
 252                 return FAILURE;
 253         }
 254
 255         psi_call_frame_enter(frame);
 256
 257         if (SUCCESS != psi_call_frame_do_let(frame)) {
 258                 psi_call_frame_do_return(frame, return_value);
 259                 psi_call_frame_free(frame);
 260
 261                 return FAILURE;
 262         }
 263
 264         if (SUCCESS != psi_call_frame_do_assert(frame, PSI_ASSERT_PRE)) {
 265                 psi_call_frame_do_return(frame, return_value);
 266                 psi_call_frame_free(frame);
 267
 268                 return FAILURE;
 269         }
 270
 271         C->ops->call(frame);
 272
 273         if (SUCCESS != psi_call_frame_do_assert(frame, PSI_ASSERT_POST)) {
 274                 psi_call_frame_do_return(frame, return_value);
 275                 psi_call_frame_free(frame);
 276
 277                 return FAILURE;
 278         }
 279
 280         psi_call_frame_do_return(frame, return_value);
 281         psi_call_frame_do_set(frame);
 282         psi_call_frame_do_free(frame);
 283         psi_call_frame_free(frame);
 284
 285         return SUCCESS;
 286 }
 287
 288
 289 void psi_context_dtor(struct psi_context *C)
 290 {
 291         size_t i;
 292         zend_function_entry *zfe;
 293
 294         if (C->ops->dtor) {
 295                 C->ops->dtor(C);
 296         }
 297
 298         psi_data_dtor(PSI_DATA(C));
 299
 300         if (C->data) {
 301                 for (i = 0; i < C->count; ++i) {
 302                         psi_data_dtor(&C->data[i]);
 303                 }
 304                 free(C->data);
 305         }
 306
 307         if (C->closures) {
 308                 for (zfe = C->closures; zfe->fname; ++zfe) {
 309                         free((void *) zfe->arg_info);
 310                 }
 311                 free(C->closures);
 312         }
 313 }
 314
 315 void psi_context_free(struct psi_context **C)
 316 {
 317         if (*C) {
 318                 psi_context_dtor(*C);
 319                 free(*C);
 320                 *C = NULL;
 321         }
 322 }
 323
 324 void psi_context_dump(struct psi_context *C, int fd)
 325 {
 326         size_t i;
 327         struct psi_data *D;
 328
 329         dprintf(fd, "// psi.engine=%s\n// %lu files\n",
 330                         (char *) C->ops->query(C, PSI_CONTEXT_QUERY_SELF, NULL),
 331                         C->count);
 332
 333         for (i = 0; i < C->count; ++i) {
 334                 psi_data_dump(fd, &C->data[i]);
 335         }
 336 }