git.m6w6.name Git - m6w6/ext-pq/blob - src/php_pq_misc.c

   1 /*
   2     +--------------------------------------------------------------------+
   3     | PECL :: pq                                                         |
   4     +--------------------------------------------------------------------+
   5     | Redistribution and use in source and binary forms, with or without |
   6     | modification, are permitted provided that the conditions mentioned |
   7     | in the accompanying LICENSE file are met.                          |
   8     +--------------------------------------------------------------------+
   9     | Copyright (c) 2013, Michael Wallner <mike@php.net>                 |
  10     +--------------------------------------------------------------------+
  11 */
  12
  13 #ifdef HAVE_CONFIG_H
  14 #       include "config.h"
  15 #endif
  16
  17 #include <php.h>
  18 #include <ext/date/php_date.h>
  19 #include <ext/standard/php_string.h>
  20
  21 #include <Zend/zend_interfaces.h>
  22
  23 #include <libpq/libpq-fs.h>
  24
  25 #include "php_pq.h"
  26 #include "php_pqexc.h"
  27 #include "php_pq_misc.h"
  28 #include "php_pqconn_event.h"
  29 #undef PHP_PQ_TYPE
  30 #include "php_pq_type.h"
  31
  32
  33 /* clear result object associated with a result handle */
  34 void php_pqres_clear(PGresult *r) {
  35         php_pq_object_t *o = PQresultInstanceData(r, php_pqconn_event);
  36
  37         if (o) {
  38                 php_pq_object_delref(o);
  39         } else {
  40                 PQclear(r);
  41         }
  42 }
  43
  44 /* clear any asynchronous results */
  45 void php_pqconn_clear(PGconn *conn) {
  46         PGresult *r;
  47         php_pqconn_event_data_t *evdata = PQinstanceData(conn, php_pqconn_event);
  48
  49         while ((r = PQgetResult(conn))) {
  50                 php_pqres_clear(r);
  51         }
  52
  53         if (evdata && evdata->obj) {
  54                 if (php_pq_callback_is_enabled(&evdata->obj->intern->onevent)) {
  55                         if (php_pq_callback_is_locked(&evdata->obj->intern->onevent)) {
  56                                 php_pq_callback_disable(&evdata->obj->intern->onevent);
  57                         } else {
  58                                 php_pq_callback_dtor(&evdata->obj->intern->onevent);
  59                         }
  60                 }
  61         }
  62 }
  63
  64 /* safe wrappers to clear any asynchronous wrappers before querying synchronously */
  65 PGresult *php_pq_exec(PGconn *conn, const char *query) {
  66         php_pqconn_clear(conn);
  67         return PQexec(conn, query);
  68 }
  69 PGresult *php_pq_exec_params(PGconn *conn, const char *command, int nParams, const Oid *paramTypes, const char *const * paramValues, const int *paramLengths, const int *paramFormats, int resultFormat) {
  70         php_pqconn_clear(conn);
  71         return PQexecParams(conn, command, nParams, paramTypes, paramValues, paramLengths, paramFormats, resultFormat);
  72 }
  73 PGresult *php_pq_prepare(PGconn *conn, const char *stmtName, const char *query, int nParams, const Oid *paramTypes) {
  74         php_pqconn_clear(conn);
  75         return PQprepare(conn, stmtName, query, nParams, paramTypes);
  76 }
  77 PGresult *php_pq_exec_prepared(PGconn *conn, const char *stmtName, int nParams, const char *const * paramValues, const int *paramLengths, const int *paramFormats, int resultFormat) {
  78         php_pqconn_clear(conn);
  79         return PQexecPrepared(conn, stmtName, nParams, paramValues, paramLengths, paramFormats, resultFormat);
  80 }
  81
  82 char *php_pq_rtrim(char *e)
  83 {
  84         size_t l = strlen(e);
  85
  86         while (l-- > 0 && e[l] == '\n') {
  87                 e[l] = '\0';
  88         }
  89         return e;
  90 }
  91
  92 const char *php_pq_strmode(long mode)
  93 {
  94         switch (mode & (INV_READ|INV_WRITE)) {
  95         case INV_READ|INV_WRITE:
  96                 return "rw";
  97         case INV_READ:
  98                 return "r";
  99         case INV_WRITE:
 100                 return "w";
 101         default:
 102                 return "-";
 103         }
 104 }
 105
 106 static inline int compare_index(zend_ulong l, zend_ulong r)
 107 {
 108         if (l < r) {
 109                 return -1;
 110         }
 111         if (l > r) {
 112                 return 1;
 113         }
 114         return 0;
 115 }
 116 #if PHP_VERSION_ID >= 80000
 117 int php_pq_compare_index(Bucket *lptr, Bucket *rptr)
 118 {
 119         return compare_index(lptr->h, rptr->h);
 120 }
 121 #else
 122 int php_pq_compare_index(const void *lptr, const void *rptr) {
 123         return compare_index(((const Bucket *) lptr)->h, ((const Bucket *) rptr)->h);
 124 }
 125 #endif
 126
 127 void php_pq_hash_ptr_dtor(zval *p)
 128 {
 129         efree(Z_PTR_P(p));
 130 }
 131
 132 zend_class_entry *php_pqdt_class_entry;
 133
 134 #if PHP_VERSION_ID >= 80100
 135 ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(ai_pqdt_jsonserialize, 0, 0, IS_MIXED, 0)
 136 ZEND_END_ARG_INFO()
 137 #else
 138 #define ai_pqdt_jsonserialize ai_pqdt_to_string
 139 #endif
 140
 141 ZEND_BEGIN_ARG_INFO_EX(ai_pqdt_to_string, 0, 0, 0)
 142 ZEND_END_ARG_INFO();
 143 static PHP_METHOD(pqdt, __toString)
 144 {
 145         zval rv, tmp;
 146
 147         ZVAL_NULL(&rv);
 148         php_pq_call_method(getThis(), "format", 1, &rv, php_pq_read_property(getThis(), "format", &tmp));
 149         RETVAL_ZVAL(&rv, 1, 1);
 150 }
 151
 152 #if PHP_VERSION_ID >= 80100
 153 ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_OBJ_TYPE_MASK_EX(ai_pqdt_create_from_format, 0, 2, DateTime, MAY_BE_FALSE)
 154 #else
 155 ZEND_BEGIN_ARG_INFO_EX(ai_pqdt_create_from_format, 0, 0, 2)
 156 #endif
 157         ZEND_ARG_INFO(0, format)
 158         ZEND_ARG_INFO(0, datetime)
 159 #if PHP_VERSION_ID >= 70200
 160         ZEND_ARG_OBJ_INFO(0, object, DateTimeZone, 1)
 161 #else
 162         ZEND_ARG_INFO(0, timezone)
 163 #endif
 164 ZEND_END_ARG_INFO();
 165 static PHP_METHOD(pqdt, createFromFormat)
 166 {
 167         zend_error_handling zeh;
 168         char *fmt_str, *dt_str;
 169         size_t fmt_len, dt_len;
 170         zval *ztz = NULL;
 171         ZEND_RESULT_CODE rv;
 172
 173         zend_replace_error_handling(EH_THROW, exce(EX_INVALID_ARGUMENT), &zeh);
 174         rv = zend_parse_parameters(ZEND_NUM_ARGS(), "ss|O", &fmt_str, &fmt_len, &dt_str, &dt_len, &ztz, php_date_get_timezone_ce());
 175         zend_restore_error_handling(&zeh);
 176
 177         if (SUCCESS == rv) {
 178                 php_pqdt_from_string(return_value, fmt_str, dt_str, dt_len, "Y-m-d H:i:s.uO", ztz);
 179         }
 180 }
 181
 182 static zend_function_entry php_pqdt_methods[] = {
 183         PHP_ME(pqdt, createFromFormat, ai_pqdt_create_from_format, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
 184         PHP_ME(pqdt, __toString, ai_pqdt_to_string, ZEND_ACC_PUBLIC)
 185         PHP_MALIAS(pqdt, jsonSerialize, __toString, ai_pqdt_jsonserialize, ZEND_ACC_PUBLIC)
 186         {0}
 187 };
 188
 189 zval *php_pqdt_from_string(zval *zv, char *input_fmt, char *dt_str, size_t dt_len, const char *output_fmt, zval *ztimezone)
 190 {
 191         php_date_obj *dobj;
 192
 193         php_date_instantiate(php_pqdt_class_entry, zv);
 194         dobj = php_date_obj_from_obj(Z_OBJ_P(zv));
 195         if (!php_date_initialize(dobj, dt_str, dt_len, input_fmt, ztimezone, 1)) {
 196                 zval_dtor(zv);
 197                 ZVAL_NULL(zv);
 198         } else if (output_fmt) {
 199                 zval fmt;
 200                 ZVAL_STRING(&fmt, output_fmt);
 201                 php_pq_update_property(zv, "format", &fmt);
 202                 zval_ptr_dtor(&fmt);
 203         }
 204
 205         return zv;
 206 }
 207
 208 zend_string *php_pqdt_to_string(zval *zdt, const char *format)
 209 {
 210         zval rv;
 211
 212         ZVAL_NULL(&rv);
 213
 214         if (php_pq_cast_object(zdt, IS_STRING, &rv)) {
 215                 return Z_STR(rv);
 216         } else if (instanceof_function(Z_OBJCE_P(zdt), php_date_get_date_ce())) {
 217                 zval rv, zfmt;
 218
 219                 ZVAL_NULL(&rv);
 220                 ZVAL_STRING(&zfmt, format);
 221                 php_pq_call_method(zdt, "format", 1, &rv, &zfmt);
 222                 zval_ptr_dtor(&zfmt);
 223
 224                 if (Z_TYPE(rv) == IS_STRING) {
 225                         return Z_STR(rv);
 226                 }
 227                 zval_ptr_dtor(&rv);
 228         }
 229
 230         return NULL;
 231 }
 232
 233 zend_class_entry *php_pqconv_class_entry;
 234
 235 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_types, 0, 0, 0)
 236 ZEND_END_ARG_INFO();
 237
 238 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_from_string, 0, 0, 2)
 239         ZEND_ARG_INFO(0, data)
 240         ZEND_ARG_INFO(0, type)
 241 ZEND_END_ARG_INFO();
 242
 243 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_to_string, 0, 0, 2)
 244         ZEND_ARG_INFO(0, data)
 245         ZEND_ARG_INFO(0, type)
 246 ZEND_END_ARG_INFO();
 247
 248 zend_function_entry php_pqconv_methods[] = {
 249         PHP_ABSTRACT_ME(pqconv, convertTypes, ai_pqconv_convert_types)
 250         PHP_ABSTRACT_ME(pqconv, convertFromString, ai_pqconv_convert_from_string)
 251         PHP_ABSTRACT_ME(pqconv, convertToString, ai_pqconv_convert_to_string)
 252         {0}
 253 };
 254
 255
 256 PHP_MINIT_FUNCTION(pq_misc)
 257 {
 258         zend_class_entry *json, ce = {0};
 259
 260         INIT_NS_CLASS_ENTRY(ce, "pq", "Converter", php_pqconv_methods);
 261         php_pqconv_class_entry = zend_register_internal_interface(&ce);
 262
 263         memset(&ce, 0, sizeof(ce));
 264         INIT_NS_CLASS_ENTRY(ce ,"pq", "DateTime", php_pqdt_methods);
 265         php_pqdt_class_entry = zend_register_internal_class_ex(&ce, php_date_get_date_ce());
 266
 267         zend_declare_property_stringl(php_pqdt_class_entry, ZEND_STRL("format"), ZEND_STRL("Y-m-d H:i:s.uO"), ZEND_ACC_PUBLIC);
 268
 269         /* stop reading this file right here! */
 270         if ((json = zend_hash_str_find_ptr(CG(class_table), ZEND_STRL("jsonserializable")))) {
 271                 zend_class_implements(php_pqdt_class_entry, 1, json);
 272         }
 273
 274         return SUCCESS;
 275 }
 276
 277 typedef struct _HashTableList {
 278         zval arr;
 279         struct _HashTableList *parent;
 280 } HashTableList;
 281
 282 typedef struct _ArrayParserState {
 283         const char *ptr, *end;
 284         HashTableList *list;
 285         php_pqres_t *res;
 286         Oid typ;
 287         unsigned quotes:1;
 288         unsigned escaped:1;
 289 } ArrayParserState;
 290
 291 static char caa(ArrayParserState *a, const char *any, unsigned advance)
 292 {
 293         const char *p = any;
 294
 295         do {
 296                 if (*p == *a->ptr) {
 297                         a->ptr += advance;
 298                         return *p;
 299                 }
 300         } while (*++p);
 301
 302         php_error_docref(NULL, E_WARNING, "Failed to parse array: expected one of '%s', got '%c'", any, *a->ptr); \
 303         return 0;
 304 }
 305
 306 static ZEND_RESULT_CODE add_element(ArrayParserState *a, const char *start)
 307 {
 308         zval zelem;
 309         zend_string *zstr = zend_string_init(start, a->ptr - start, 0);
 310
 311         if (a->quotes) {
 312                 php_stripslashes(zstr);
 313                 ZVAL_STR(&zelem, zstr);
 314         } else if (!zend_string_equals_literal(zstr, "NULL")) {
 315                 ZVAL_STR(&zelem, zstr);
 316         } else {
 317                 zend_string_release(zstr);
 318                 ZVAL_NULL(&zelem);
 319         }
 320
 321         if (!ZVAL_IS_NULL(&zelem)) {
 322                 php_pqres_typed_zval(a->res, a->typ, &zelem);
 323         }
 324
 325         add_next_index_zval(&a->list->arr, &zelem);
 326         return SUCCESS;
 327 }
 328
 329 static ZEND_RESULT_CODE parse_array(ArrayParserState *a);
 330
 331 static ZEND_RESULT_CODE parse_element(ArrayParserState *a, char delim)
 332 {
 333         const char *el;
 334
 335         switch (*a->ptr) {
 336         case '{':
 337                 return parse_array(a);
 338
 339         case '}':
 340                 return SUCCESS;
 341
 342         case '"':
 343                 a->quotes = 1;
 344                 ++a->ptr;
 345                 break;
 346         }
 347
 348         for (el = a->ptr; a->ptr < a->end; ++a->ptr) {
 349                 switch (*a->ptr) {
 350                 case '\\':
 351                         a->escaped = !a->escaped;
 352                         break;
 353
 354                 case '"':
 355                         if (a->escaped) {
 356                                 a->escaped = 0;
 357                         } else if (a->quotes) {
 358                                 if (SUCCESS != add_element(a, el)) {
 359                                         return FAILURE;
 360                                 }
 361                                 a->quotes = 0;
 362                                 ++a->ptr;
 363                                 return SUCCESS;
 364                         } else {
 365                                 php_error_docref(NULL, E_WARNING, "Failed to parse element, unexpected quote: '%.*s'", (int) (a->ptr - el), el);
 366                                 return FAILURE;
 367                         }
 368                         break;
 369
 370                 default:
 371                         if (delim != *a->ptr) {
 372                                 a->escaped = 0;
 373                                 break;
 374                         }
 375                         /* no break */
 376                 case '}':
 377                         if (!a->quotes) {
 378                                 return add_element(a, el);
 379                         }
 380                         break;
 381
 382                 }
 383         }
 384
 385         php_error_docref(NULL, E_WARNING, "Failed to parse element, reached end of input");
 386         return FAILURE;
 387 }
 388
 389 static ZEND_RESULT_CODE parse_elements(ArrayParserState *a)
 390 {
 391         char delims[] = {'}', (char) PHP_PQ_DELIM_OF_ARRAY(a->typ), 0};
 392
 393         while (SUCCESS == parse_element(a, delims[1])) {
 394                 switch (caa(a, delims, 0)) {
 395                 case 0:
 396                         return FAILURE;
 397
 398                 case '}':
 399                         return SUCCESS;
 400
 401                 default:
 402                         if (!*++a->ptr) {
 403                                 php_error_docref(NULL, E_WARNING, "Failed to parse elements, reached end of input");
 404                                 return FAILURE;
 405                         }
 406                         break;
 407                 }
 408         }
 409
 410         return FAILURE;
 411 }
 412
 413 static ZEND_RESULT_CODE parse_array(ArrayParserState *a)
 414 {
 415         HashTableList *list;
 416
 417         if (!caa(a, "{", 1)) {
 418                 return FAILURE;
 419         }
 420
 421         list = ecalloc(1, sizeof(*list));
 422         array_init(&list->arr);
 423
 424         if (a->list) {
 425                 add_next_index_zval(&a->list->arr, &list->arr);
 426                 list->parent = a->list;
 427         }
 428         a->list = list;
 429
 430         if (SUCCESS != parse_elements(a)) {
 431                 return FAILURE;
 432         }
 433
 434         if (!caa(a, "}", 1)) {
 435                 return FAILURE;
 436         }
 437
 438         /* step one level back up */
 439         if (a->list->parent) {
 440                 HashTableList *l = a->list->parent;
 441
 442                 efree(a->list);
 443                 a->list = l;
 444         }
 445
 446         return SUCCESS;
 447 }
 448
 449 HashTable *php_pq_parse_array(php_pqres_t *res, const char *val_str, size_t val_len, Oid typ)
 450 {
 451         HashTable *ht = NULL;
 452         ArrayParserState a = {0};
 453
 454         a.typ = typ;
 455         a.ptr = val_str;
 456         a.end = val_str + val_len;
 457         a.res = res;
 458
 459         if (SUCCESS != parse_array(&a)) {
 460                 while (a.list) {
 461                         HashTableList *l = a.list->parent;
 462
 463                         zval_dtor(&a.list->arr);
 464                         efree(a.list);
 465                         a.list = l;
 466                 }
 467                 return ht;
 468         }
 469
 470         if (*a.ptr) {
 471                 php_error_docref(NULL, E_NOTICE, "Trailing input: '%s'", a.ptr);
 472         }
 473
 474         while (a.list) {
 475                 HashTableList *l = a.list->parent;
 476
 477                 ht = Z_ARRVAL(a.list->arr);
 478                 efree(a.list);
 479                 a.list = l;
 480         }
 481
 482         return ht;
 483 }
 484
 485
 486 /*
 487  * Local variables:
 488  * tab-width: 4
 489  * c-basic-offset: 4
 490  * End:
 491  * vim600: noet sw=4 ts=4 fdm=marker
 492  * vim<600: noet sw=4 ts=4
 493  */