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 ZEND_BEGIN_ARG_INFO_EX(ai_pqdt_to_string, 0, 0, 0)
 135 ZEND_END_ARG_INFO();
 136 static PHP_METHOD(pqdt, __toString)
 137 {
 138         zval rv, tmp;
 139
 140         ZVAL_NULL(&rv);
 141         php_pq_call_method(getThis(), "format", 1, &rv, php_pq_read_property(getThis(), "format", &tmp));
 142         RETVAL_ZVAL(&rv, 1, 1);
 143 }
 144
 145 ZEND_BEGIN_ARG_INFO_EX(ai_pqdt_create_from_format, 0, 0, 2)
 146         ZEND_ARG_INFO(0, format)
 147         ZEND_ARG_INFO(0, datetime)
 148 #if PHP_VERSION_ID >= 70200
 149         ZEND_ARG_OBJ_INFO(0, object, DateTimeZone, 1)
 150 #else
 151         ZEND_ARG_INFO(0, timezone)
 152 #endif
 153 ZEND_END_ARG_INFO();
 154 static PHP_METHOD(pqdt, createFromFormat)
 155 {
 156         zend_error_handling zeh;
 157         char *fmt_str, *dt_str;
 158         size_t fmt_len, dt_len;
 159         zval *ztz = NULL;
 160         ZEND_RESULT_CODE rv;
 161
 162         zend_replace_error_handling(EH_THROW, exce(EX_INVALID_ARGUMENT), &zeh);
 163         rv = zend_parse_parameters(ZEND_NUM_ARGS(), "ss|O", &fmt_str, &fmt_len, &dt_str, &dt_len, &ztz, php_date_get_timezone_ce());
 164         zend_restore_error_handling(&zeh);
 165
 166         if (SUCCESS == rv) {
 167                 php_pqdt_from_string(return_value, fmt_str, dt_str, dt_len, "Y-m-d H:i:s.uO", ztz);
 168         }
 169 }
 170
 171 static zend_function_entry php_pqdt_methods[] = {
 172         PHP_ME(pqdt, createFromFormat, ai_pqdt_create_from_format, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
 173         PHP_ME(pqdt, __toString, ai_pqdt_to_string, ZEND_ACC_PUBLIC)
 174         PHP_MALIAS(pqdt, jsonSerialize, __toString, ai_pqdt_to_string, ZEND_ACC_PUBLIC)
 175         {0}
 176 };
 177
 178 zval *php_pqdt_from_string(zval *zv, char *input_fmt, char *dt_str, size_t dt_len, const char *output_fmt, zval *ztimezone)
 179 {
 180         php_date_obj *dobj;
 181
 182         php_date_instantiate(php_pqdt_class_entry, zv);
 183         dobj = php_date_obj_from_obj(Z_OBJ_P(zv));
 184         if (!php_date_initialize(dobj, dt_str, dt_len, input_fmt, ztimezone, 1)) {
 185                 zval_dtor(zv);
 186                 ZVAL_NULL(zv);
 187         } else if (output_fmt) {
 188                 zval fmt;
 189                 ZVAL_STRING(&fmt, output_fmt);
 190                 php_pq_update_property(zv, "format", &fmt);
 191                 zval_ptr_dtor(&fmt);
 192         }
 193
 194         return zv;
 195 }
 196
 197 zend_string *php_pqdt_to_string(zval *zdt, const char *format)
 198 {
 199         zval rv;
 200
 201         ZVAL_NULL(&rv);
 202
 203         if (php_pq_cast_object(zdt, IS_STRING, &rv)) {
 204                 return Z_STR(rv);
 205         } else if (instanceof_function(Z_OBJCE_P(zdt), php_date_get_date_ce())) {
 206                 zval rv, zfmt;
 207
 208                 ZVAL_NULL(&rv);
 209                 ZVAL_STRING(&zfmt, format);
 210                 php_pq_call_method(zdt, "format", 1, &rv, &zfmt);
 211                 zval_ptr_dtor(&zfmt);
 212
 213                 if (Z_TYPE(rv) == IS_STRING) {
 214                         return Z_STR(rv);
 215                 }
 216                 zval_ptr_dtor(&rv);
 217         }
 218
 219         return NULL;
 220 }
 221
 222 zend_class_entry *php_pqconv_class_entry;
 223
 224 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_types, 0, 0, 0)
 225 ZEND_END_ARG_INFO();
 226
 227 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_from_string, 0, 0, 2)
 228         ZEND_ARG_INFO(0, data)
 229         ZEND_ARG_INFO(0, type)
 230 ZEND_END_ARG_INFO();
 231
 232 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_to_string, 0, 0, 2)
 233         ZEND_ARG_INFO(0, data)
 234         ZEND_ARG_INFO(0, type)
 235 ZEND_END_ARG_INFO();
 236
 237 zend_function_entry php_pqconv_methods[] = {
 238         PHP_ABSTRACT_ME(pqconv, convertTypes, ai_pqconv_convert_types)
 239         PHP_ABSTRACT_ME(pqconv, convertFromString, ai_pqconv_convert_from_string)
 240         PHP_ABSTRACT_ME(pqconv, convertToString, ai_pqconv_convert_to_string)
 241         {0}
 242 };
 243
 244
 245 PHP_MINIT_FUNCTION(pq_misc)
 246 {
 247         zend_class_entry *json, ce = {0};
 248
 249         INIT_NS_CLASS_ENTRY(ce, "pq", "Converter", php_pqconv_methods);
 250         php_pqconv_class_entry = zend_register_internal_interface(&ce);
 251
 252         memset(&ce, 0, sizeof(ce));
 253         INIT_NS_CLASS_ENTRY(ce ,"pq", "DateTime", php_pqdt_methods);
 254         php_pqdt_class_entry = zend_register_internal_class_ex(&ce, php_date_get_date_ce());
 255
 256         zend_declare_property_stringl(php_pqdt_class_entry, ZEND_STRL("format"), ZEND_STRL("Y-m-d H:i:s.uO"), ZEND_ACC_PUBLIC);
 257
 258         /* stop reading this file right here! */
 259         if ((json = zend_hash_str_find_ptr(CG(class_table), ZEND_STRL("jsonserializable")))) {
 260                 zend_class_implements(php_pqdt_class_entry, 1, json);
 261         }
 262
 263         return SUCCESS;
 264 }
 265
 266 typedef struct _HashTableList {
 267         zval arr;
 268         struct _HashTableList *parent;
 269 } HashTableList;
 270
 271 typedef struct _ArrayParserState {
 272         const char *ptr, *end;
 273         HashTableList *list;
 274         php_pqres_t *res;
 275         Oid typ;
 276         unsigned quotes:1;
 277         unsigned escaped:1;
 278 } ArrayParserState;
 279
 280 static char caa(ArrayParserState *a, const char *any, unsigned advance)
 281 {
 282         const char *p = any;
 283
 284         do {
 285                 if (*p == *a->ptr) {
 286                         a->ptr += advance;
 287                         return *p;
 288                 }
 289         } while (*++p);
 290
 291         php_error_docref(NULL, E_WARNING, "Failed to parse array: expected one of '%s', got '%c'", any, *a->ptr); \
 292         return 0;
 293 }
 294
 295 static ZEND_RESULT_CODE add_element(ArrayParserState *a, const char *start)
 296 {
 297         zval zelem;
 298         zend_string *zstr = zend_string_init(start, a->ptr - start, 0);
 299
 300         if (a->quotes) {
 301                 php_stripslashes(zstr);
 302                 ZVAL_STR(&zelem, zstr);
 303         } else if (!zend_string_equals_literal(zstr, "NULL")) {
 304                 ZVAL_STR(&zelem, zstr);
 305         } else {
 306                 zend_string_release(zstr);
 307                 ZVAL_NULL(&zelem);
 308         }
 309
 310         if (!ZVAL_IS_NULL(&zelem)) {
 311                 php_pqres_typed_zval(a->res, a->typ, &zelem);
 312         }
 313
 314         add_next_index_zval(&a->list->arr, &zelem);
 315         return SUCCESS;
 316 }
 317
 318 static ZEND_RESULT_CODE parse_array(ArrayParserState *a);
 319
 320 static ZEND_RESULT_CODE parse_element(ArrayParserState *a, char delim)
 321 {
 322         const char *el;
 323
 324         switch (*a->ptr) {
 325         case '{':
 326                 return parse_array(a);
 327
 328         case '}':
 329                 return SUCCESS;
 330
 331         case '"':
 332                 a->quotes = 1;
 333                 ++a->ptr;
 334                 break;
 335         }
 336
 337         for (el = a->ptr; a->ptr < a->end; ++a->ptr) {
 338                 switch (*a->ptr) {
 339                 case '\\':
 340                         a->escaped = !a->escaped;
 341                         break;
 342
 343                 case '"':
 344                         if (a->escaped) {
 345                                 a->escaped = 0;
 346                         } else if (a->quotes) {
 347                                 if (SUCCESS != add_element(a, el)) {
 348                                         return FAILURE;
 349                                 }
 350                                 a->quotes = 0;
 351                                 ++a->ptr;
 352                                 return SUCCESS;
 353                         } else {
 354                                 php_error_docref(NULL, E_WARNING, "Failed to parse element, unexpected quote: '%.*s'", (int) (a->ptr - el), el);
 355                                 return FAILURE;
 356                         }
 357                         break;
 358
 359                 default:
 360                         if (delim != *a->ptr) {
 361                                 a->escaped = 0;
 362                                 break;
 363                         }
 364                         /* no break */
 365                 case '}':
 366                         if (!a->quotes) {
 367                                 return add_element(a, el);
 368                         }
 369                         break;
 370
 371                 }
 372         }
 373
 374         php_error_docref(NULL, E_WARNING, "Failed to parse element, reached end of input");
 375         return FAILURE;
 376 }
 377
 378 static ZEND_RESULT_CODE parse_elements(ArrayParserState *a)
 379 {
 380         char delims[] = {'}', (char) PHP_PQ_DELIM_OF_ARRAY(a->typ), 0};
 381
 382         while (SUCCESS == parse_element(a, delims[1])) {
 383                 switch (caa(a, delims, 0)) {
 384                 case 0:
 385                         return FAILURE;
 386
 387                 case '}':
 388                         return SUCCESS;
 389
 390                 default:
 391                         if (!*++a->ptr) {
 392                                 php_error_docref(NULL, E_WARNING, "Failed to parse elements, reached end of input");
 393                                 return FAILURE;
 394                         }
 395                         break;
 396                 }
 397         }
 398
 399         return FAILURE;
 400 }
 401
 402 static ZEND_RESULT_CODE parse_array(ArrayParserState *a)
 403 {
 404         HashTableList *list;
 405
 406         if (!caa(a, "{", 1)) {
 407                 return FAILURE;
 408         }
 409
 410         list = ecalloc(1, sizeof(*list));
 411         array_init(&list->arr);
 412
 413         if (a->list) {
 414                 add_next_index_zval(&a->list->arr, &list->arr);
 415                 list->parent = a->list;
 416         }
 417         a->list = list;
 418
 419         if (SUCCESS != parse_elements(a)) {
 420                 return FAILURE;
 421         }
 422
 423         if (!caa(a, "}", 1)) {
 424                 return FAILURE;
 425         }
 426
 427         /* step one level back up */
 428         if (a->list->parent) {
 429                 HashTableList *l = a->list->parent;
 430
 431                 efree(a->list);
 432                 a->list = l;
 433         }
 434
 435         return SUCCESS;
 436 }
 437
 438 HashTable *php_pq_parse_array(php_pqres_t *res, const char *val_str, size_t val_len, Oid typ)
 439 {
 440         HashTable *ht = NULL;
 441         ArrayParserState a = {0};
 442
 443         a.typ = typ;
 444         a.ptr = val_str;
 445         a.end = val_str + val_len;
 446         a.res = res;
 447
 448         if (SUCCESS != parse_array(&a)) {
 449                 while (a.list) {
 450                         HashTableList *l = a.list->parent;
 451
 452                         zval_dtor(&a.list->arr);
 453                         efree(a.list);
 454                         a.list = l;
 455                 }
 456                 return ht;
 457         }
 458
 459         if (*a.ptr) {
 460                 php_error_docref(NULL, E_NOTICE, "Trailing input: '%s'", a.ptr);
 461         }
 462
 463         while (a.list) {
 464                 HashTableList *l = a.list->parent;
 465
 466                 ht = Z_ARRVAL(a.list->arr);
 467                 efree(a.list);
 468                 a.list = l;
 469         }
 470
 471         return ht;
 472 }
 473
 474
 475 /*
 476  * Local variables:
 477  * tab-width: 4
 478  * c-basic-offset: 4
 479  * End:
 480  * vim600: noet sw=4 ts=4 fdm=marker
 481  * vim<600: noet sw=4 ts=4
 482  */