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 int php_pq_compare_index_80(Bucket *lptr, Bucket *rptr)
 107 {
 108         zend_ulong l = lptr->h;
 109         zend_ulong r = rptr->h;
 110
 111         if (l < r) {
 112                 return -1;
 113         }
 114         if (l > r) {
 115                 return 1;
 116         }
 117         return 0;
 118 }
 119 int php_pq_compare_index_70(const void *lptr, const void *rptr) {
 120         return php_pq_compare_index_80((Bucket *) lptr, (Bucket *) rptr);
 121 }
 122
 123 void php_pq_hash_ptr_dtor(zval *p)
 124 {
 125         efree(Z_PTR_P(p));
 126 }
 127
 128 zend_class_entry *php_pqdt_class_entry;
 129
 130 ZEND_BEGIN_ARG_INFO_EX(ai_pqdt_to_string, 0, 0, 0)
 131 ZEND_END_ARG_INFO();
 132 static PHP_METHOD(pqdt, __toString)
 133 {
 134         zval rv, tmp;
 135
 136         ZVAL_NULL(&rv);
 137         php_pq_call_method(getThis(), "format", 1, &rv, php_pq_read_property(getThis(), "format", &tmp));
 138         RETVAL_ZVAL(&rv, 1, 1);
 139 }
 140
 141 ZEND_BEGIN_ARG_INFO_EX(ai_pqdt_create_from_format, 0, 0, 2)
 142         ZEND_ARG_INFO(0, format)
 143         ZEND_ARG_INFO(0, datetime)
 144 #if PHP_VERSION_ID >= 70200
 145         ZEND_ARG_OBJ_INFO(0, object, DateTimeZone, 1)
 146 #else
 147         ZEND_ARG_INFO(0, timezone)
 148 #endif
 149 ZEND_END_ARG_INFO();
 150 static PHP_METHOD(pqdt, createFromFormat)
 151 {
 152         zend_error_handling zeh;
 153         char *fmt_str, *dt_str;
 154         size_t fmt_len, dt_len;
 155         zval *ztz = NULL;
 156         ZEND_RESULT_CODE rv;
 157
 158         zend_replace_error_handling(EH_THROW, exce(EX_INVALID_ARGUMENT), &zeh);
 159         rv = zend_parse_parameters(ZEND_NUM_ARGS(), "ss|O", &fmt_str, &fmt_len, &dt_str, &dt_len, &ztz, php_date_get_timezone_ce());
 160         zend_restore_error_handling(&zeh);
 161
 162         if (SUCCESS == rv) {
 163                 php_pqdt_from_string(return_value, fmt_str, dt_str, dt_len, "Y-m-d H:i:s.uO", ztz);
 164         }
 165 }
 166
 167 static zend_function_entry php_pqdt_methods[] = {
 168         PHP_ME(pqdt, createFromFormat, ai_pqdt_create_from_format, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
 169         PHP_ME(pqdt, __toString, ai_pqdt_to_string, ZEND_ACC_PUBLIC)
 170         PHP_MALIAS(pqdt, jsonSerialize, __toString, ai_pqdt_to_string, ZEND_ACC_PUBLIC)
 171         {0}
 172 };
 173
 174 zval *php_pqdt_from_string(zval *zv, char *input_fmt, char *dt_str, size_t dt_len, const char *output_fmt, zval *ztimezone)
 175 {
 176         php_date_obj *dobj;
 177
 178         php_date_instantiate(php_pqdt_class_entry, zv);
 179         dobj = php_date_obj_from_obj(Z_OBJ_P(zv));
 180         if (!php_date_initialize(dobj, dt_str, dt_len, input_fmt, ztimezone, 1)) {
 181                 zval_dtor(zv);
 182                 ZVAL_NULL(zv);
 183         } else if (output_fmt) {
 184                 zval fmt;
 185                 ZVAL_STRING(&fmt, output_fmt);
 186                 php_pq_update_property(zv, "format", &fmt);
 187                 zval_ptr_dtor(&fmt);
 188         }
 189
 190         return zv;
 191 }
 192
 193 zend_string *php_pqdt_to_string(zval *zdt, const char *format)
 194 {
 195         zval rv;
 196
 197         ZVAL_NULL(&rv);
 198
 199         if (php_pq_cast_object(zdt, IS_STRING, &rv)) {
 200                 return Z_STR(rv);
 201         } else if (instanceof_function(Z_OBJCE_P(zdt), php_date_get_date_ce())) {
 202                 zval rv, zfmt;
 203
 204                 ZVAL_NULL(&rv);
 205                 ZVAL_STRING(&zfmt, format);
 206                 php_pq_call_method(zdt, "format", 1, &rv, &zfmt);
 207                 zval_ptr_dtor(&zfmt);
 208
 209                 if (Z_TYPE(rv) == IS_STRING) {
 210                         return Z_STR(rv);
 211                 }
 212                 zval_ptr_dtor(&rv);
 213         }
 214
 215         return NULL;
 216 }
 217
 218 zend_class_entry *php_pqconv_class_entry;
 219
 220 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_types, 0, 0, 0)
 221 ZEND_END_ARG_INFO();
 222
 223 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_from_string, 0, 0, 2)
 224         ZEND_ARG_INFO(0, data)
 225         ZEND_ARG_INFO(0, type)
 226 ZEND_END_ARG_INFO();
 227
 228 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_to_string, 0, 0, 2)
 229         ZEND_ARG_INFO(0, data)
 230         ZEND_ARG_INFO(0, type)
 231 ZEND_END_ARG_INFO();
 232
 233 zend_function_entry php_pqconv_methods[] = {
 234         PHP_ABSTRACT_ME(pqconv, convertTypes, ai_pqconv_convert_types)
 235         PHP_ABSTRACT_ME(pqconv, convertFromString, ai_pqconv_convert_from_string)
 236         PHP_ABSTRACT_ME(pqconv, convertToString, ai_pqconv_convert_to_string)
 237         {0}
 238 };
 239
 240
 241 PHP_MINIT_FUNCTION(pq_misc)
 242 {
 243         zend_class_entry *json, ce = {0};
 244
 245         INIT_NS_CLASS_ENTRY(ce, "pq", "Converter", php_pqconv_methods);
 246         php_pqconv_class_entry = zend_register_internal_interface(&ce);
 247
 248         memset(&ce, 0, sizeof(ce));
 249         INIT_NS_CLASS_ENTRY(ce ,"pq", "DateTime", php_pqdt_methods);
 250         php_pqdt_class_entry = zend_register_internal_class_ex(&ce, php_date_get_date_ce());
 251
 252         zend_declare_property_stringl(php_pqdt_class_entry, ZEND_STRL("format"), ZEND_STRL("Y-m-d H:i:s.uO"), ZEND_ACC_PUBLIC);
 253
 254         /* stop reading this file right here! */
 255         if ((json = zend_hash_str_find_ptr(CG(class_table), ZEND_STRL("jsonserializable")))) {
 256                 zend_class_implements(php_pqdt_class_entry, 1, json);
 257         }
 258
 259         return SUCCESS;
 260 }
 261
 262 typedef struct _HashTableList {
 263         zval arr;
 264         struct _HashTableList *parent;
 265 } HashTableList;
 266
 267 typedef struct _ArrayParserState {
 268         const char *ptr, *end;
 269         HashTableList *list;
 270         php_pqres_t *res;
 271         Oid typ;
 272         unsigned quotes:1;
 273         unsigned escaped:1;
 274 } ArrayParserState;
 275
 276 static char caa(ArrayParserState *a, const char *any, unsigned advance)
 277 {
 278         const char *p = any;
 279
 280         do {
 281                 if (*p == *a->ptr) {
 282                         a->ptr += advance;
 283                         return *p;
 284                 }
 285         } while (*++p);
 286
 287         php_error_docref(NULL, E_WARNING, "Failed to parse array: expected one of '%s', got '%c'", any, *a->ptr); \
 288         return 0;
 289 }
 290
 291 static ZEND_RESULT_CODE add_element(ArrayParserState *a, const char *start)
 292 {
 293         zval zelem;
 294         zend_string *zstr = zend_string_init(start, a->ptr - start, 0);
 295
 296         if (a->quotes) {
 297                 php_stripslashes(zstr);
 298                 ZVAL_STR(&zelem, zstr);
 299         } else if (!zend_string_equals_literal(zstr, "NULL")) {
 300                 ZVAL_STR(&zelem, zstr);
 301         } else {
 302                 zend_string_release(zstr);
 303                 ZVAL_NULL(&zelem);
 304         }
 305
 306         if (!ZVAL_IS_NULL(&zelem)) {
 307                 php_pqres_typed_zval(a->res, a->typ, &zelem);
 308         }
 309
 310         add_next_index_zval(&a->list->arr, &zelem);
 311         return SUCCESS;
 312 }
 313
 314 static ZEND_RESULT_CODE parse_array(ArrayParserState *a);
 315
 316 static ZEND_RESULT_CODE parse_element(ArrayParserState *a, char delim)
 317 {
 318         const char *el;
 319
 320         switch (*a->ptr) {
 321         case '{':
 322                 return parse_array(a);
 323
 324         case '}':
 325                 return SUCCESS;
 326
 327         case '"':
 328                 a->quotes = 1;
 329                 ++a->ptr;
 330                 break;
 331         }
 332
 333         for (el = a->ptr; a->ptr < a->end; ++a->ptr) {
 334                 switch (*a->ptr) {
 335                 case '\\':
 336                         a->escaped = !a->escaped;
 337                         break;
 338
 339                 case '"':
 340                         if (a->escaped) {
 341                                 a->escaped = 0;
 342                         } else if (a->quotes) {
 343                                 if (SUCCESS != add_element(a, el)) {
 344                                         return FAILURE;
 345                                 }
 346                                 a->quotes = 0;
 347                                 ++a->ptr;
 348                                 return SUCCESS;
 349                         } else {
 350                                 php_error_docref(NULL, E_WARNING, "Failed to parse element, unexpected quote: '%.*s'", (int) (a->ptr - el), el);
 351                                 return FAILURE;
 352                         }
 353                         break;
 354
 355                 default:
 356                         if (delim != *a->ptr) {
 357                                 a->escaped = 0;
 358                                 break;
 359                         }
 360                         /* no break */
 361                 case '}':
 362                         if (!a->quotes) {
 363                                 return add_element(a, el);
 364                         }
 365                         break;
 366
 367                 }
 368         }
 369
 370         php_error_docref(NULL, E_WARNING, "Failed to parse element, reached end of input");
 371         return FAILURE;
 372 }
 373
 374 static ZEND_RESULT_CODE parse_elements(ArrayParserState *a)
 375 {
 376         char delims[] = {'}', (char) PHP_PQ_DELIM_OF_ARRAY(a->typ), 0};
 377
 378         while (SUCCESS == parse_element(a, delims[1])) {
 379                 switch (caa(a, delims, 0)) {
 380                 case 0:
 381                         return FAILURE;
 382
 383                 case '}':
 384                         return SUCCESS;
 385
 386                 default:
 387                         if (!*++a->ptr) {
 388                                 php_error_docref(NULL, E_WARNING, "Failed to parse elements, reached end of input");
 389                                 return FAILURE;
 390                         }
 391                         break;
 392                 }
 393         }
 394
 395         return FAILURE;
 396 }
 397
 398 static ZEND_RESULT_CODE parse_array(ArrayParserState *a)
 399 {
 400         HashTableList *list;
 401
 402         if (!caa(a, "{", 1)) {
 403                 return FAILURE;
 404         }
 405
 406         list = ecalloc(1, sizeof(*list));
 407         array_init(&list->arr);
 408
 409         if (a->list) {
 410                 add_next_index_zval(&a->list->arr, &list->arr);
 411                 list->parent = a->list;
 412         }
 413         a->list = list;
 414
 415         if (SUCCESS != parse_elements(a)) {
 416                 return FAILURE;
 417         }
 418
 419         if (!caa(a, "}", 1)) {
 420                 return FAILURE;
 421         }
 422
 423         /* step one level back up */
 424         if (a->list->parent) {
 425                 HashTableList *l = a->list->parent;
 426
 427                 efree(a->list);
 428                 a->list = l;
 429         }
 430
 431         return SUCCESS;
 432 }
 433
 434 HashTable *php_pq_parse_array(php_pqres_t *res, const char *val_str, size_t val_len, Oid typ)
 435 {
 436         HashTable *ht = NULL;
 437         ArrayParserState a = {0};
 438
 439         a.typ = typ;
 440         a.ptr = val_str;
 441         a.end = val_str + val_len;
 442         a.res = res;
 443
 444         if (SUCCESS != parse_array(&a)) {
 445                 while (a.list) {
 446                         HashTableList *l = a.list->parent;
 447
 448                         zval_dtor(&a.list->arr);
 449                         efree(a.list);
 450                         a.list = l;
 451                 }
 452                 return ht;
 453         }
 454
 455         if (*a.ptr) {
 456                 php_error_docref(NULL, E_NOTICE, "Trailing input: '%s'", a.ptr);
 457         }
 458
 459         while (a.list) {
 460                 HashTableList *l = a.list->parent;
 461
 462                 ht = Z_ARRVAL(a.list->arr);
 463                 efree(a.list);
 464                 a.list = l;
 465         }
 466
 467         return ht;
 468 }
 469
 470
 471 /*
 472  * Local variables:
 473  * tab-width: 4
 474  * c-basic-offset: 4
 475  * End:
 476  * vim600: noet sw=4 ts=4 fdm=marker
 477  * vim<600: noet sw=4 ts=4
 478  */