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         zc.flags = CONST_PERSISTENT|CONST_CS;
 172         zc.module_number = EG(current_module)->module_number;
 173
 174         if (C->consts) {
 175                 size_t i = 0;
 176                 struct psi_const *c;
 177
 178                 while (psi_plist_get(C->consts, i++, &c)) {
 179
 180                         if (zend_get_constant_str(c->name, strlen(c->name))) {
 181                                 continue;
 182                         }
 183
 184                         zc.name = zend_string_init(c->name, strlen(c->name), 1);
 185
 186                         switch (c->type->type) {
 187                         case PSI_T_BOOL:
 188                                 ZVAL_BOOL(&zc.value, c->val->ival.zend.bval);
 189                                 break;
 190                         case PSI_T_INT:
 191                                 ZVAL_LONG(&zc.value, c->val->ival.zend.lval);
 192                                 break;
 193                         case PSI_T_FLOAT:
 194                         case PSI_T_DOUBLE:
 195                                 ZVAL_DOUBLE(&zc.value, c->val->ival.dval);
 196                                 break;
 197                         case PSI_T_STRING:
 198                         case PSI_T_QUOTED_STRING:
 199                                 ZVAL_NEW_STR(&zc.value, zend_string_copy(c->val->ival.zend.str));
 200                                 break;
 201                         default:
 202                                 assert(0);
 203                                 break;
 204                         }
 205
 206                         zend_register_constant(&zc);
 207                 }
 208         }
 209
 210         if (C->enums) {
 211                 size_t i = 0;
 212                 struct psi_decl_enum *e;
 213
 214                 while (psi_plist_get(C->enums, i++, &e)) {
 215                         size_t j = 0;
 216                         struct psi_decl_enum_item *item;
 217
 218                         while (psi_plist_get(e->items, j++, &item)) {
 219                                 zend_string *name;
 220
 221                                 if (psi_decl_type_is_anon(e->name, "enum")) {
 222                                         name = strpprintf(0, "psi\\%s", item->name);
 223                                 } else {
 224                                         name = strpprintf(0, "psi\\%s\\%s", e->name, item->name);
 225                                 }
 226
 227                                 if (zend_get_constant(name)) {
 228                                         zend_string_release(name);
 229                                         continue;
 230                                 }
 231
 232                                 zc.name = zend_string_dup(name, 1);
 233                                 ZVAL_LONG(&zc.value, psi_num_exp_get_long(item->num, NULL, NULL));
 234                                 zend_register_constant(&zc);
 235                                 zend_string_release(name);
 236                         }
 237                 }
 238         }
 239
 240         return C->closures = C->ops->compile(C);
 241 }
 242
 243
 244 ZEND_RESULT_CODE psi_context_call(struct psi_context *C, zend_execute_data *execute_data, zval *return_value, struct psi_impl *impl)
 245 {
 246         struct psi_call_frame *frame;
 247
 248         frame = psi_call_frame_init(C, impl->decl, impl);
 249
 250         if (SUCCESS != psi_call_frame_parse_args(frame, execute_data)) {
 251                 psi_call_frame_free(frame);
 252
 253                 return FAILURE;
 254         }
 255
 256         psi_call_frame_enter(frame);
 257
 258         if (SUCCESS != psi_call_frame_do_let(frame)) {
 259                 psi_call_frame_do_return(frame, return_value);
 260                 psi_call_frame_free(frame);
 261
 262                 return FAILURE;
 263         }
 264
 265         if (SUCCESS != psi_call_frame_do_assert(frame, PSI_ASSERT_PRE)) {
 266                 psi_call_frame_do_return(frame, return_value);
 267                 psi_call_frame_free(frame);
 268
 269                 return FAILURE;
 270         }
 271
 272         C->ops->call(frame);
 273
 274         if (SUCCESS != psi_call_frame_do_assert(frame, PSI_ASSERT_POST)) {
 275                 psi_call_frame_do_return(frame, return_value);
 276                 psi_call_frame_free(frame);
 277
 278                 return FAILURE;
 279         }
 280
 281         psi_call_frame_do_return(frame, return_value);
 282         psi_call_frame_do_set(frame);
 283         psi_call_frame_do_free(frame);
 284         psi_call_frame_free(frame);
 285
 286         return SUCCESS;
 287 }
 288
 289
 290 void psi_context_dtor(struct psi_context *C)
 291 {
 292         size_t i;
 293         zend_function_entry *zfe;
 294
 295         if (C->ops->dtor) {
 296                 C->ops->dtor(C);
 297         }
 298
 299         psi_data_dtor(PSI_DATA(C));
 300
 301         if (C->data) {
 302                 for (i = 0; i < C->count; ++i) {
 303                         psi_data_dtor(&C->data[i]);
 304                 }
 305                 free(C->data);
 306         }
 307
 308         if (C->closures) {
 309                 for (zfe = C->closures; zfe->fname; ++zfe) {
 310                         free((void *) zfe->arg_info);
 311                 }
 312                 free(C->closures);
 313         }
 314 }
 315
 316 void psi_context_free(struct psi_context **C)
 317 {
 318         if (*C) {
 319                 psi_context_dtor(*C);
 320                 free(*C);
 321                 *C = NULL;
 322         }
 323 }
 324
 325 void psi_context_dump(struct psi_context *C, int fd)
 326 {
 327         dprintf(fd, "// psi.engine=%s\n",
 328                         (char *) C->ops->query(C, PSI_CONTEXT_QUERY_SELF, NULL));
 329
 330         psi_data_dump(fd, PSI_DATA(C));
 331 }