root/ext/sybase_ct/php_sybase_ct.c

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DEFINITIONS

This source file includes following definitions.
  1. _clean_invalid_results
  2. _free_sybase_result
  3. php_free_sybase_result
  4. _close_sybase_link
  5. _close_sybase_plink
  6. _client_message_handler
  7. _call_message_handler
  8. _server_message_handler
  9. PHP_INI_BEGIN
  10. PHP_GSHUTDOWN_FUNCTION
  11. PHP_MINIT_FUNCTION
  12. PHP_RINIT_FUNCTION
  13. PHP_MSHUTDOWN_FUNCTION
  14. PHP_RSHUTDOWN_FUNCTION
  15. php_sybase_do_connect_internal
  16. php_sybase_do_connect
  17. php_sybase_get_default_link
  18. PHP_FUNCTION
  19. PHP_FUNCTION
  20. php_sybase_connection_id
  21. PHP_FUNCTION
  22. exec_cmd
  23. PHP_FUNCTION
  24. php_sybase_finish_results
  25. php_sybase_fetch_result_row
  26. php_sybase_fetch_result_set
  27. php_sybase_query
  28. PHP_FUNCTION
  29. PHP_FUNCTION
  30. PHP_FUNCTION
  31. PHP_FUNCTION
  32. PHP_FUNCTION
  33. PHP_FUNCTION
  34. PHP_FUNCTION
  35. php_sybase_fetch_hash
  36. PHP_FUNCTION
  37. PHP_FUNCTION
  38. PHP_FUNCTION
  39. PHP_FUNCTION
  40. php_sybase_get_field_name
  41. PHP_FUNCTION
  42. PHP_FUNCTION
  43. PHP_FUNCTION
  44. PHP_FUNCTION
  45. PHP_MINFO_FUNCTION
  46. PHP_FUNCTION
  47. PHP_FUNCTION
  48. PHP_FUNCTION
  49. PHP_FUNCTION

   1 /*
   2    +----------------------------------------------------------------------+
   3    | PHP Version 5                                                        |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 1997-2016 The PHP Group                                |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15    | Authors: Zeev Suraski <zeev@zend.com>                                |
  16    |          Tom May <tom@go2net.com>                                    |
  17    |          Timm Friebe <php_sybase_ct@thekid.de>                       |
  18    +----------------------------------------------------------------------+
  19  */
  20 
  21 /* $Id$ */
  22 
  23 
  24 #ifdef HAVE_CONFIG_H
  25 #include "config.h"
  26 #endif
  27 
  28 #include "php.h"
  29 #include "php_sybase_ct.h"
  30 #include "ext/standard/php_standard.h"
  31 #include "ext/standard/info.h"
  32 #include "php_globals.h"
  33 #include "php_ini.h"
  34 
  35 /* True globals, no need for thread safety */
  36 static int le_link, le_plink, le_result;
  37 
  38 #if HAVE_SYBASE_CT
  39 
  40 ZEND_DECLARE_MODULE_GLOBALS(sybase)
  41 static PHP_GINIT_FUNCTION(sybase);
  42 static PHP_GSHUTDOWN_FUNCTION(sybase);
  43 
  44 /* {{{ arginfo */
  45 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_connect, 0, 0, 0)
  46         ZEND_ARG_INFO(0, host)
  47         ZEND_ARG_INFO(0, user)
  48         ZEND_ARG_INFO(0, password)
  49         ZEND_ARG_INFO(0, charset)
  50         ZEND_ARG_INFO(0, appname)
  51         ZEND_ARG_INFO(0, new)
  52 ZEND_END_ARG_INFO()
  53 
  54 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_pconnect, 0, 0, 0)
  55         ZEND_ARG_INFO(0, host)
  56         ZEND_ARG_INFO(0, user)
  57         ZEND_ARG_INFO(0, password)
  58         ZEND_ARG_INFO(0, charset)
  59         ZEND_ARG_INFO(0, appname)
  60 ZEND_END_ARG_INFO()
  61 
  62 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_close, 0, 0, 0)
  63         ZEND_ARG_INFO(0, link_id)
  64 ZEND_END_ARG_INFO()
  65 
  66 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_select_db, 0, 0, 1)
  67         ZEND_ARG_INFO(0, database)
  68         ZEND_ARG_INFO(0, link_id)
  69 ZEND_END_ARG_INFO()
  70 
  71 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_query, 0, 0, 1)
  72         ZEND_ARG_INFO(0, query)
  73         ZEND_ARG_INFO(0, link_id)
  74 ZEND_END_ARG_INFO()
  75 
  76 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_unbuffered_query, 0, 0, 1)
  77         ZEND_ARG_INFO(0, query)
  78         ZEND_ARG_INFO(0, link_id)
  79 ZEND_END_ARG_INFO()
  80 
  81 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_free_result, 0, 0, 1)
  82         ZEND_ARG_INFO(0, result)
  83 ZEND_END_ARG_INFO()
  84 
  85 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_get_last_message, 0, 0, 1)
  86         ZEND_ARG_INFO(0, d)
  87 ZEND_END_ARG_INFO()
  88 
  89 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_num_rows, 0, 0, 1)
  90         ZEND_ARG_INFO(0, result)
  91 ZEND_END_ARG_INFO()
  92 
  93 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_num_fields, 0, 0, 1)
  94         ZEND_ARG_INFO(0, result)
  95 ZEND_END_ARG_INFO()
  96 
  97 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_row, 0, 0, 1)
  98         ZEND_ARG_INFO(0, result)
  99 ZEND_END_ARG_INFO()
 100 
 101 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_object, 0, 0, 1)
 102         ZEND_ARG_INFO(0, result)
 103         ZEND_ARG_INFO(0, object)
 104 ZEND_END_ARG_INFO()
 105 
 106 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_array, 0, 0, 1)
 107         ZEND_ARG_INFO(0, result)
 108 ZEND_END_ARG_INFO()
 109 
 110 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_assoc, 0, 0, 1)
 111         ZEND_ARG_INFO(0, result)
 112 ZEND_END_ARG_INFO()
 113 
 114 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_data_seek, 0, 0, 2)
 115         ZEND_ARG_INFO(0, result)
 116         ZEND_ARG_INFO(0, offset)
 117 ZEND_END_ARG_INFO()
 118 
 119 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_fetch_field, 0, 0, 1)
 120         ZEND_ARG_INFO(0, result)
 121         ZEND_ARG_INFO(0, offset)
 122 ZEND_END_ARG_INFO()
 123 
 124 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_field_seek, 0, 0, 2)
 125         ZEND_ARG_INFO(0, result)
 126         ZEND_ARG_INFO(0, offset)
 127 ZEND_END_ARG_INFO()
 128 
 129 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_result, 0, 0, 3)
 130         ZEND_ARG_INFO(0, result)
 131         ZEND_ARG_INFO(0, row)
 132         ZEND_ARG_INFO(0, field)
 133 ZEND_END_ARG_INFO()
 134 
 135 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_affected_rows, 0, 0, 0)
 136         ZEND_ARG_INFO(0, link_id)
 137 ZEND_END_ARG_INFO()
 138 
 139 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_min_client_severity, 0, 0, 1)
 140         ZEND_ARG_INFO(0, severity)
 141 ZEND_END_ARG_INFO()
 142 
 143 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_min_server_severity, 0, 0, 1)
 144         ZEND_ARG_INFO(0, severity)
 145 ZEND_END_ARG_INFO()
 146 
 147 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_deadlock_retry_count, 0, 0, 1)
 148         ZEND_ARG_INFO(0, retry_count)
 149 ZEND_END_ARG_INFO()
 150 
 151 ZEND_BEGIN_ARG_INFO_EX(arginfo_sybase_set_message_handler, 0, 0, 1)
 152         ZEND_ARG_INFO(0, error_func)
 153         ZEND_ARG_INFO(0, connection)
 154 ZEND_END_ARG_INFO()
 155 /* }}} */
 156 
 157 const zend_function_entry sybase_functions[] = {
 158         PHP_FE(sybase_connect,                          arginfo_sybase_connect)
 159         PHP_FE(sybase_pconnect,                         arginfo_sybase_pconnect)
 160         PHP_FE(sybase_close,                            arginfo_sybase_close)
 161         PHP_FE(sybase_select_db,                        arginfo_sybase_select_db)
 162         PHP_FE(sybase_query,                            arginfo_sybase_query)
 163         PHP_FE(sybase_unbuffered_query,         arginfo_sybase_unbuffered_query)
 164         PHP_FE(sybase_free_result,                      arginfo_sybase_free_result)
 165         PHP_FE(sybase_get_last_message,         arginfo_sybase_get_last_message)
 166         PHP_FE(sybase_num_rows,                         arginfo_sybase_num_rows)
 167         PHP_FE(sybase_num_fields,                       arginfo_sybase_num_fields)
 168         PHP_FE(sybase_fetch_row,                        arginfo_sybase_fetch_row)
 169         PHP_FE(sybase_fetch_array,                      arginfo_sybase_fetch_array)
 170         PHP_FE(sybase_fetch_assoc,                      arginfo_sybase_fetch_assoc)
 171         PHP_FE(sybase_fetch_object,                     arginfo_sybase_fetch_object)
 172         PHP_FE(sybase_data_seek,                        arginfo_sybase_data_seek)
 173         PHP_FE(sybase_fetch_field,                      arginfo_sybase_fetch_field)
 174         PHP_FE(sybase_field_seek,                       arginfo_sybase_field_seek)
 175         PHP_FE(sybase_result,                           arginfo_sybase_result)
 176         PHP_FE(sybase_affected_rows,            arginfo_sybase_affected_rows)
 177         PHP_FE(sybase_min_client_severity,      arginfo_sybase_min_client_severity)
 178         PHP_FE(sybase_min_server_severity,      arginfo_sybase_min_server_severity)
 179         PHP_FE(sybase_set_message_handler,      arginfo_sybase_set_message_handler)
 180         PHP_FE(sybase_deadlock_retry_count, arginfo_sybase_deadlock_retry_count)
 181 
 182 #if !defined(PHP_WIN32) && !defined(HAVE_MSSQL)
 183         PHP_FALIAS(mssql_connect,       sybase_connect,         arginfo_sybase_connect)
 184         PHP_FALIAS(mssql_pconnect,      sybase_pconnect,        arginfo_sybase_pconnect)
 185         PHP_FALIAS(mssql_close,         sybase_close,           arginfo_sybase_close)
 186         PHP_FALIAS(mssql_select_db, sybase_select_db,   arginfo_sybase_select_db)
 187         PHP_FALIAS(mssql_query,         sybase_query,           arginfo_sybase_query)
 188         PHP_FALIAS(mssql_unbuffered_query,      sybase_unbuffered_query,        arginfo_sybase_unbuffered_query)
 189         PHP_FALIAS(mssql_free_result,           sybase_free_result,             arginfo_sybase_free_result)
 190         PHP_FALIAS(mssql_get_last_message,      sybase_get_last_message,        arginfo_sybase_get_last_message)
 191         PHP_FALIAS(mssql_num_rows,              sybase_num_rows,                arginfo_sybase_num_rows)
 192         PHP_FALIAS(mssql_num_fields,    sybase_num_fields,              arginfo_sybase_num_fields)
 193         PHP_FALIAS(mssql_fetch_row,     sybase_fetch_row,               arginfo_sybase_fetch_row)
 194         PHP_FALIAS(mssql_fetch_array,   sybase_fetch_array,     arginfo_sybase_fetch_array)
 195         PHP_FALIAS(mssql_fetch_assoc,   sybase_fetch_assoc,     arginfo_sybase_fetch_assoc)
 196         PHP_FALIAS(mssql_fetch_object,  sybase_fetch_object,    arginfo_sybase_fetch_object)
 197         PHP_FALIAS(mssql_data_seek,     sybase_data_seek,               arginfo_sybase_data_seek)
 198         PHP_FALIAS(mssql_fetch_field,   sybase_fetch_field,     arginfo_sybase_fetch_field)
 199         PHP_FALIAS(mssql_field_seek,    sybase_field_seek,              arginfo_sybase_field_seek)
 200         PHP_FALIAS(mssql_result,                sybase_result,                  arginfo_sybase_result)
 201         PHP_FALIAS(mssql_affected_rows, sybase_affected_rows,   arginfo_sybase_affected_rows)
 202         PHP_FALIAS(mssql_min_client_severity,   sybase_min_client_severity,     arginfo_sybase_min_client_severity)
 203         PHP_FALIAS(mssql_min_server_severity,   sybase_min_server_severity,     arginfo_sybase_min_server_severity)
 204         PHP_FALIAS(mssql_set_message_handler,   sybase_set_message_handler,     arginfo_sybase_set_message_handler)
 205         PHP_FALIAS(mssql_deadlock_retry_count,  sybase_deadlock_retry_count,    arginfo_sybase_deadlock_retry_count)
 206 #endif
 207         PHP_FE_END
 208 };
 209 
 210 zend_module_entry sybase_module_entry = {
 211         STANDARD_MODULE_HEADER,
 212         "sybase_ct",
 213         sybase_functions,
 214         PHP_MINIT(sybase),
 215         PHP_MSHUTDOWN(sybase),
 216         PHP_RINIT(sybase),
 217         PHP_RSHUTDOWN(sybase),
 218         PHP_MINFO(sybase),
 219         NO_VERSION_YET,
 220         PHP_MODULE_GLOBALS(sybase),
 221         PHP_GINIT(sybase),
 222         PHP_GSHUTDOWN(sybase),
 223         NULL,
 224         STANDARD_MODULE_PROPERTIES_EX
 225 };
 226 
 227 /* static CS_CONTEXT *context; */
 228 
 229 #ifdef COMPILE_DL_SYBASE_CT
 230 ZEND_GET_MODULE(sybase)
 231 #endif
 232 
 233 ZEND_DECLARE_MODULE_GLOBALS(sybase)
 234 
 235 #define CHECK_LINK(link) { if (link==-1) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  A link to the server could not be established"); RETURN_FALSE; } }
 236 
 237 
 238 static int _clean_invalid_results(zend_rsrc_list_entry *le TSRMLS_DC)
 239 {
 240         if (Z_TYPE_P(le) == le_result) {
 241                 sybase_link *sybase_ptr = ((sybase_result *) le->ptr)->sybase_ptr;
 242 
 243                 if (!sybase_ptr->valid) {
 244                         return 1;
 245                 }
 246         }
 247         return 0;
 248 }
 249 
 250 #define efree_n(x)  { efree(x); x = NULL; }
 251 #define efree_if(x) if (x) efree_n(x)
 252 
 253 #ifdef PHP_SYBASE_DEBUG
 254 #define FREE_SYBASE_RESULT(result)                                                            \
 255         if (result) {                                                                             \
 256             fprintf(stderr, "_free_sybase_result(%p) called from line #%d\n", result, __LINE__);  \
 257                 fflush(stderr);                                                                       \
 258                 _free_sybase_result(result);                                                          \
 259                 result = NULL;                                                                        \
 260         }
 261 #else
 262 #define FREE_SYBASE_RESULT(result)                                                            \
 263         if (result) {                                                                             \
 264                 _free_sybase_result(result);                                                          \
 265                 result = NULL;                                                                        \
 266         }
 267 #endif
 268 static void _free_sybase_result(sybase_result *result)
 269 {
 270         int i, j;
 271 
 272         if (result->data) {
 273                 for (i = 0; i < (result->store ? result->num_rows : MIN(1, result->num_rows)); i++) {
 274                         for (j=0; j<result->num_fields; j++) {
 275                                 zval_dtor(&result->data[i][j]);
 276                         }
 277                         efree(result->data[i]);
 278                 }
 279                 efree(result->data);
 280         }
 281 
 282         if (result->fields) {
 283                 for (i=0; i<result->num_fields; i++) {
 284                         STR_FREE(result->fields[i].name);
 285                         STR_FREE(result->fields[i].column_source);
 286                 }
 287                 efree(result->fields);
 288         }
 289 
 290         if (result->tmp_buffer) {
 291                 for (i=0; i<result->num_fields; i++) {
 292                         efree(result->tmp_buffer[i]);
 293                 }
 294                 efree(result->tmp_buffer);
 295         }
 296 
 297         efree_if(result->lengths);
 298         efree_if(result->indicators);
 299         efree_if(result->datafmt);
 300         efree_if(result->numerics);
 301         efree_if(result->types);
 302 
 303         efree(result);
 304 }
 305 
 306 /* Forward declaration */
 307 static int php_sybase_finish_results (sybase_result *result TSRMLS_DC);
 308 
 309 static void php_free_sybase_result(zend_rsrc_list_entry *rsrc TSRMLS_DC)
 310 {
 311         sybase_result *result = (sybase_result *)rsrc->ptr;
 312 
 313         /* Check to see if we've read all rows */
 314         if (result->sybase_ptr && result->sybase_ptr->active_result_index) {
 315                 if (result->sybase_ptr->cmd) {
 316                         ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
 317                 }
 318                 php_sybase_finish_results(result TSRMLS_CC);
 319         }
 320 
 321         FREE_SYBASE_RESULT(result);
 322 }
 323 
 324 static void _close_sybase_link(zend_rsrc_list_entry *rsrc TSRMLS_DC)
 325 {
 326         sybase_link *sybase_ptr = (sybase_link *)rsrc->ptr;
 327         CS_INT con_status;
 328 
 329         sybase_ptr->valid = 0;
 330         if (sybase_ptr->callback_name != NULL) {
 331                 zval_ptr_dtor(&sybase_ptr->callback_name);
 332                 sybase_ptr->callback_name= NULL;
 333         }
 334         zend_hash_apply(&EG(regular_list), (apply_func_t) _clean_invalid_results TSRMLS_CC);
 335 
 336         /* Non-persistent connections will always be connected or we wouldn't
 337          * get here, but since we want to check the death status anyway
 338          * we might as well double-check the connect status.
 339          */
 340         if (ct_con_props(sybase_ptr->connection, CS_GET, CS_CON_STATUS,
 341                                          &con_status, CS_UNUSED, NULL)!=CS_SUCCEED) {
 342                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to get connection status on close");
 343                 /* Assume the worst. */
 344                 con_status = CS_CONSTAT_CONNECTED | CS_CONSTAT_DEAD;
 345         }
 346         if (con_status & CS_CONSTAT_CONNECTED) {
 347                 if ((con_status & CS_CONSTAT_DEAD) || ct_close(sybase_ptr->connection, CS_UNUSED)!=CS_SUCCEED) {
 348                         ct_close(sybase_ptr->connection, CS_FORCE_CLOSE);
 349                 }
 350         }
 351 
 352         ct_cmd_drop(sybase_ptr->cmd);
 353         ct_con_drop(sybase_ptr->connection);
 354         efree(sybase_ptr);
 355         SybCtG(num_links)--;
 356 }
 357 
 358 
 359 static void _close_sybase_plink(zend_rsrc_list_entry *rsrc TSRMLS_DC)
 360 {
 361         sybase_link *sybase_ptr = (sybase_link *)rsrc->ptr;
 362         CS_INT con_status;
 363 
 364         /* Persistent connections may have been closed before a failed
 365          * reopen attempt.
 366          */
 367         if (ct_con_props(sybase_ptr->connection, CS_GET, CS_CON_STATUS,
 368                                          &con_status, CS_UNUSED, NULL)!=CS_SUCCEED) {
 369                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to get connection status on close");
 370                 /* Assume the worst. */
 371                 con_status = CS_CONSTAT_CONNECTED | CS_CONSTAT_DEAD;
 372         }
 373         if (con_status & CS_CONSTAT_CONNECTED) {
 374                 if ((con_status & CS_CONSTAT_DEAD) || ct_close(sybase_ptr->connection, CS_UNUSED)!=CS_SUCCEED) {
 375                         ct_close(sybase_ptr->connection, CS_FORCE_CLOSE);
 376                 }
 377         }
 378 
 379         ct_con_drop(sybase_ptr->connection);
 380         free(sybase_ptr);
 381         SybCtG(num_persistent)--;
 382         SybCtG(num_links)--;
 383 }
 384 
 385 
 386 static CS_RETCODE CS_PUBLIC _client_message_handler(CS_CONTEXT *context, CS_CONNECTION *connection, CS_CLIENTMSG *errmsg)
 387 {
 388         TSRMLS_FETCH();
 389 
 390         if (CS_SEVERITY(errmsg->msgnumber) >= SybCtG(min_client_severity)) {
 391                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Client message:  %s (severity %ld)", errmsg->msgstring, (long)CS_SEVERITY(errmsg->msgnumber));
 392         }
 393         STR_FREE(SybCtG(server_message));
 394         SybCtG(server_message) = estrdup(errmsg->msgstring);
 395 
 396 
 397         /* If this is a timeout message, return CS_FAIL to cancel the
 398          * operation and mark the connection as dead.
 399          */
 400         if (CS_SEVERITY(errmsg->msgnumber) == CS_SV_RETRY_FAIL &&
 401                 CS_NUMBER(errmsg->msgnumber) == 63 &&
 402                 CS_ORIGIN(errmsg->msgnumber) == 2 &&
 403                 CS_LAYER(errmsg->msgnumber) == 1)
 404         {
 405                 return CS_FAIL;
 406         }
 407 
 408         return CS_SUCCEED;
 409 }
 410 
 411 static int _call_message_handler(zval *callback_name, CS_SERVERMSG *srvmsg TSRMLS_DC)
 412 {
 413         int handled = 0;
 414         zval *msgnumber, *severity, *state, *line, *text, *retval = NULL;
 415         zval **args[5];
 416 
 417         /* Border case - empty fcall */
 418         if (NULL == callback_name) return 0;
 419 
 420         /* Build arguments */
 421         MAKE_STD_ZVAL(msgnumber);
 422         ZVAL_LONG(msgnumber, srvmsg->msgnumber);
 423         args[0] = &msgnumber;
 424 
 425         MAKE_STD_ZVAL(severity);
 426         ZVAL_LONG(severity, srvmsg->severity);
 427         args[1] = &severity;
 428 
 429         MAKE_STD_ZVAL(state);
 430         ZVAL_LONG(state, srvmsg->state);
 431         args[2] = &state;
 432 
 433         MAKE_STD_ZVAL(line);
 434         ZVAL_LONG(line, srvmsg->line);
 435         args[3] = &line;
 436 
 437         MAKE_STD_ZVAL(text);    
 438         ZVAL_STRING(text, srvmsg->text, 1);
 439         args[4] = &text;
 440 
 441         if (call_user_function_ex(EG(function_table), NULL, callback_name, &retval, 5, args, 0, NULL TSRMLS_CC) == FAILURE) {
 442                 zval expr_copy;
 443                 int use_copy;
 444 
 445                 zend_make_printable_zval(callback_name, &expr_copy, &use_copy);
 446                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Cannot call the messagehandler %s", Z_STRVAL(expr_copy));
 447                 zval_dtor(&expr_copy);
 448         }
 449 
 450         if (retval) {
 451                 handled = ((Z_TYPE_P(retval) != IS_BOOL) || (Z_BVAL_P(retval) != 0));
 452                 zval_ptr_dtor(&retval);
 453         } else {
 454                 handled = 0;
 455         }
 456 
 457         zval_ptr_dtor(&msgnumber);
 458         zval_ptr_dtor(&severity);
 459         zval_ptr_dtor(&state);
 460         zval_ptr_dtor(&line);
 461         zval_ptr_dtor(&text);
 462 
 463         return handled;
 464 }
 465 
 466 static CS_RETCODE CS_PUBLIC _server_message_handler(CS_CONTEXT *context, CS_CONNECTION *connection, CS_SERVERMSG *srvmsg)
 467 {
 468         sybase_link *sybase;
 469         int handled = 0;
 470         TSRMLS_FETCH();
 471 
 472         /* Remember the last server message in any case */
 473         STR_FREE(SybCtG(server_message));
 474         SybCtG(server_message) = estrdup(srvmsg->text);
 475 
 476         /* Retrieve sybase link */
 477         if (ct_con_props(connection, CS_GET, CS_USERDATA, &sybase, CS_SIZEOF(sybase), NULL) != CS_SUCCEED) {
 478                 sybase = NULL;
 479         }
 480 
 481         /* If this is a deadlock message, set the connection's deadlock flag
 482          * so we will retry the request.  Sorry about the bare constant here,
 483          * but it's not defined anywhere and it's a "well-known" number.
 484          */
 485         if (sybase && (srvmsg->msgnumber == 1205)) {
 486                 sybase->deadlock = 1;
 487         }
 488 
 489         /* Check mininum server severity level */
 490         if (srvmsg->severity < SybCtG(min_server_severity)) {
 491                 return CS_SUCCEED;
 492         }
 493 
 494         /* Call global message handler */
 495         handled = handled | _call_message_handler(SybCtG(callback_name), srvmsg TSRMLS_CC);
 496 
 497         /* Call link specific message handler */
 498         if (sybase) {
 499                 handled = handled | _call_message_handler(sybase->callback_name, srvmsg TSRMLS_CC);
 500         }
 501 
 502         /* Spit out a warning if neither of them has handled this message */
 503         if (!handled) {
 504                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Server message:  %s (severity %ld, procedure %s)",
 505                                 srvmsg->text, (long)srvmsg->severity, ((srvmsg->proclen>0) ? srvmsg->proc : "N/A"));
 506         }
 507 
 508         return CS_SUCCEED;
 509 }
 510 
 511 
 512 PHP_INI_BEGIN()
 513         STD_PHP_INI_BOOLEAN("sybct.allow_persistent", "1", PHP_INI_SYSTEM, OnUpdateLong, allow_persistent, zend_sybase_globals, sybase_globals)
 514         STD_PHP_INI_ENTRY_EX("sybct.max_persistent", "-1", PHP_INI_SYSTEM, OnUpdateLong, max_persistent, zend_sybase_globals, sybase_globals, display_link_numbers)
 515         STD_PHP_INI_ENTRY_EX("sybct.max_links", "-1", PHP_INI_SYSTEM, OnUpdateLong, max_links, zend_sybase_globals, sybase_globals, display_link_numbers)
 516         STD_PHP_INI_ENTRY("sybct.min_server_severity", "10", PHP_INI_ALL, OnUpdateLong, min_server_severity, zend_sybase_globals, sybase_globals)
 517         STD_PHP_INI_ENTRY("sybct.min_client_severity", "10", PHP_INI_ALL, OnUpdateLong, min_client_severity, zend_sybase_globals, sybase_globals)
 518         STD_PHP_INI_ENTRY("sybct.login_timeout", "-1", PHP_INI_ALL, OnUpdateLong, login_timeout, zend_sybase_globals, sybase_globals)
 519         STD_PHP_INI_ENTRY("sybct.hostname", NULL, PHP_INI_ALL, OnUpdateString, hostname, zend_sybase_globals, sybase_globals)
 520         STD_PHP_INI_ENTRY_EX("sybct.deadlock_retry_count", "0", PHP_INI_ALL, OnUpdateLong, deadlock_retry_count, zend_sybase_globals, sybase_globals, display_link_numbers)
 521 PHP_INI_END()
 522 
 523 
 524 static PHP_GINIT_FUNCTION(sybase)
 525 {
 526         long opt;
 527 
 528         if (cs_ctx_alloc(CTLIB_VERSION, &sybase_globals->context)!=CS_SUCCEED || ct_init(sybase_globals->context, CTLIB_VERSION)!=CS_SUCCEED) {
 529                 return;
 530         }
 531 
 532         /* Initialize message handlers */
 533         if (ct_callback(sybase_globals->context, NULL, CS_SET, CS_SERVERMSG_CB, (CS_VOID *)_server_message_handler)!=CS_SUCCEED) {
 534                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set server message handler");
 535         }
 536 
 537         if (ct_callback(sybase_globals->context, NULL, CS_SET, CS_CLIENTMSG_CB, (CS_VOID *)_client_message_handler)!=CS_SUCCEED) {
 538                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set client message handler");
 539         }
 540 
 541         /* Set datetime conversion format to "Nov  3 1998  8:06PM".
 542          * This is the default format for the ct-lib that comes with
 543          * Sybase ASE 11.5.1 for Solaris, but the Linux libraries that
 544          * come with 11.0.3.3 default to "03/11/98" which is singularly
 545          * useless.  This levels the playing field for all platforms.
 546          */
 547         {
 548                 CS_INT dt_convfmt = CS_DATES_SHORT;
 549                 if (cs_dt_info(sybase_globals->context, CS_SET, NULL, CS_DT_CONVFMT, CS_UNUSED, &dt_convfmt, sizeof(dt_convfmt), NULL)!=CS_SUCCEED) {
 550                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set datetime conversion format");
 551                 }
 552         }
 553 
 554         /* Set the timeout, which is per context and can't be set with 
 555          * ct_con_props(), so set it globally from the config value if 
 556          * requested.  The default is CS_NO_LIMIT.
 557          * 
 558          * Note that despite some noise in the documentation about using
 559          * signals to implement timeouts, they are actually implemented
 560          * by using poll() or select() on Solaris and Linux.
 561          */
 562         if (cfg_get_long("sybct.timeout", &opt)==SUCCESS) {
 563                 CS_INT cs_timeout = opt;
 564                 if (ct_config(sybase_globals->context, CS_SET, CS_TIMEOUT, &cs_timeout, CS_UNUSED, NULL)!=CS_SUCCEED) {
 565                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to update the timeout");
 566                 }
 567         }
 568 
 569         sybase_globals->num_persistent=0;
 570         sybase_globals->callback_name = NULL;
 571 }
 572 
 573 
 574 static PHP_GSHUTDOWN_FUNCTION(sybase)
 575 {
 576         ct_exit(sybase_globals->context, CS_UNUSED);
 577         cs_ctx_drop(sybase_globals->context);
 578 }
 579 
 580 PHP_MINIT_FUNCTION(sybase)
 581 {
 582         REGISTER_INI_ENTRIES();
 583 
 584         le_link = zend_register_list_destructors_ex(_close_sybase_link, NULL, "sybase-ct link", module_number);
 585         le_plink = zend_register_list_destructors_ex(NULL, _close_sybase_plink, "sybase-ct link persistent", module_number);
 586         le_result = zend_register_list_destructors_ex(php_free_sybase_result, NULL, "sybase-ct result", module_number);
 587 
 588         return SUCCESS;
 589 }
 590 
 591 
 592 
 593 PHP_RINIT_FUNCTION(sybase)
 594 {
 595         SybCtG(default_link)=-1;
 596         SybCtG(num_links) = SybCtG(num_persistent);
 597         SybCtG(appname) = estrndup("PHP " PHP_VERSION, sizeof("PHP " PHP_VERSION));
 598         SybCtG(server_message) = STR_EMPTY_ALLOC();
 599         return SUCCESS;
 600 }
 601 
 602 
 603 
 604 PHP_MSHUTDOWN_FUNCTION(sybase)
 605 {
 606         UNREGISTER_INI_ENTRIES();
 607 #if 0
 608         ct_exit(context, CS_UNUSED);
 609         cs_ctx_drop(context);
 610 #endif
 611         return SUCCESS;
 612 }
 613 
 614 
 615 PHP_RSHUTDOWN_FUNCTION(sybase)
 616 {
 617         efree(SybCtG(appname));
 618         SybCtG(appname) = NULL;
 619         if (SybCtG(callback_name)) {
 620                 zval_ptr_dtor(&SybCtG(callback_name));
 621                 SybCtG(callback_name)= NULL;
 622         }
 623         STR_FREE(SybCtG(server_message));
 624         SybCtG(server_message) = NULL;
 625         return SUCCESS;
 626 }
 627 
 628 
 629 static int php_sybase_do_connect_internal(sybase_link *sybase, char *host, char *user, char *passwd, char *charset, char *appname TSRMLS_DC)
 630 {
 631         CS_LOCALE *tmp_locale;
 632         long packetsize;
 633 
 634         /* set a CS_CONNECTION record */
 635         if (ct_con_alloc(SybCtG(context), &sybase->connection)!=CS_SUCCEED) {
 636                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to allocate connection record");
 637                 return 0;
 638         }
 639 
 640         /* Note - this saves a copy of sybase, not a pointer to it. */
 641         if (ct_con_props(sybase->connection, CS_SET, CS_USERDATA, &sybase, CS_SIZEOF(sybase), NULL)!=CS_SUCCEED) {
 642                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to set userdata");
 643                 ct_con_drop(sybase->connection);
 644                 return 0;
 645         }
 646 
 647         if (user) {
 648                 ct_con_props(sybase->connection, CS_SET, CS_USERNAME, user, CS_NULLTERM, NULL);
 649         }
 650         if (passwd) {
 651                 ct_con_props(sybase->connection, CS_SET, CS_PASSWORD, passwd, CS_NULLTERM, NULL);
 652         }
 653         if (appname) {
 654                 ct_con_props(sybase->connection, CS_SET, CS_APPNAME, appname, CS_NULLTERM, NULL);
 655         } else { 
 656                 ct_con_props(sybase->connection, CS_SET, CS_APPNAME, SybCtG(appname), CS_NULLTERM, NULL);
 657         }
 658 
 659         if (SybCtG(hostname)) {
 660                 ct_con_props(sybase->connection, CS_SET, CS_HOSTNAME, SybCtG(hostname), CS_NULLTERM, NULL);
 661         }
 662 
 663         if (charset) {
 664                 if (cs_loc_alloc(SybCtG(context), &tmp_locale)!=CS_SUCCEED) {
 665                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to allocate locale information");
 666                 } else {
 667                         if (cs_locale(SybCtG(context), CS_SET, tmp_locale, CS_LC_ALL, NULL, CS_NULLTERM, NULL)!=CS_SUCCEED) {
 668                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to load default locale data");
 669                         } else {
 670                                 if (cs_locale(SybCtG(context), CS_SET, tmp_locale, CS_SYB_CHARSET, charset, CS_NULLTERM, NULL)!=CS_SUCCEED) {
 671                                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to update character set");
 672                                 } else {
 673                                         if (ct_con_props(sybase->connection, CS_SET, CS_LOC_PROP, tmp_locale, CS_UNUSED, NULL)!=CS_SUCCEED) {
 674                                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to update connection properties");
 675                                         }
 676                                 }
 677                         }
 678                 }
 679         }
 680         
 681         if (cfg_get_long("sybct.packet_size", &packetsize) == SUCCESS) {
 682                 if (ct_con_props(sybase->connection, CS_SET, CS_PACKETSIZE, (CS_VOID *)&packetsize, CS_UNUSED, NULL) != CS_SUCCEED) {
 683                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase: Unable to update connection packetsize");
 684                 }
 685         }
 686 
 687         /* Set the login timeout. Actually, the login timeout is per context
 688          * and not per connection, but we will update the context here to 
 689          * allow for code such as the following:
 690          * 
 691          *   ini_set('sybct.login_timeout', $timeout);
 692          *   sybase_connect(...)
 693          * 
 694          * Note that preceding calls to sybase_connect() will now use the 
 695          * updated value and not the default one!
 696          * 
 697          * The default value for CS_LOGIN_TIMEOUT is 60 (1 minute).
 698          */
 699         if (SybCtG(login_timeout) != -1) {
 700                 CS_INT cs_login_timeout = SybCtG(login_timeout);
 701                 if (ct_config(SybCtG(context), CS_SET, CS_LOGIN_TIMEOUT, &cs_login_timeout, CS_UNUSED, NULL)!=CS_SUCCEED) {
 702                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to update the login timeout");
 703                 }
 704         }
 705 
 706         sybase->valid = 1;
 707         sybase->dead = 0;
 708         sybase->active_result_index = 0;
 709         sybase->callback_name = NULL;
 710 
 711         /* create the link */
 712         if (ct_connect(sybase->connection, host, CS_NULLTERM)!=CS_SUCCEED) {
 713                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to connect");
 714                 ct_con_drop(sybase->connection);
 715                 return 0;
 716         }
 717 
 718         if (ct_cmd_alloc(sybase->connection, &sybase->cmd)!=CS_SUCCEED) {
 719                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to allocate command record");
 720                 ct_close(sybase->connection, CS_UNUSED);
 721                 ct_con_drop(sybase->connection);
 722                 return 0;
 723         }
 724 
 725         return 1;
 726 }
 727 
 728 
 729 static void php_sybase_do_connect(INTERNAL_FUNCTION_PARAMETERS, int persistent)
 730 {
 731         char *user = NULL, *passwd = NULL, *host = NULL, *charset = NULL, *appname = NULL;
 732         char *hashed_details;
 733         int hashed_details_length, len;
 734         zend_bool new = 0;
 735         sybase_link *sybase_ptr;
 736 
 737         host= user= passwd= charset= appname= NULL;
 738         if (persistent) {
 739                 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s!s!s!s!s!", &host, &len, &user, &len, &passwd, &len, &charset, &len, &appname, &len) == FAILURE) {
 740                         return;
 741                 }
 742         } else {
 743                 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s!s!s!s!s!b", &host, &len, &user, &len, &passwd, &len, &charset, &len, &appname, &len, &new) == FAILURE) {
 744                         return;
 745                 }
 746         }
 747         hashed_details_length = spprintf(
 748                 &hashed_details, 
 749                 0, 
 750                 "sybase_%s_%s_%s_%s_%s",
 751                 host ? host : "", 
 752                 user ? user : "", 
 753                 passwd ? passwd : "", 
 754                 charset ? charset : "", 
 755                 appname ? appname : ""
 756         );
 757 
 758         if (!SybCtG(allow_persistent)) {
 759                 persistent=0;
 760         }
 761         if (persistent) {
 762                 zend_rsrc_list_entry *le;
 763 
 764                 /* try to find if we already have this link in our persistent list */
 765                 if (zend_hash_find(&EG(persistent_list), hashed_details, hashed_details_length+1, (void **) &le)==FAILURE) {  /* we don't */
 766                         zend_rsrc_list_entry new_le;
 767 
 768                         if (SybCtG(max_links)!=-1 && SybCtG(num_links)>=SybCtG(max_links)) {
 769                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Too many open links (%ld)", SybCtG(num_links));
 770                                 efree(hashed_details);
 771                                 RETURN_FALSE;
 772                         }
 773                         if (SybCtG(max_persistent)!=-1 && SybCtG(num_persistent)>=SybCtG(max_persistent)) {
 774                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Too many open persistent links (%ld)", SybCtG(num_persistent));
 775                                 efree(hashed_details);
 776                                 RETURN_FALSE;
 777                         }
 778 
 779                         sybase_ptr = (sybase_link *) malloc(sizeof(sybase_link));
 780                         if (!sybase_ptr) {
 781                                 efree(hashed_details);
 782                                 RETURN_FALSE;
 783                         }
 784                         if (!php_sybase_do_connect_internal(sybase_ptr, host, user, passwd, charset, appname TSRMLS_CC)) {
 785                                 free(sybase_ptr);
 786                                 efree(hashed_details);
 787                                 RETURN_FALSE;
 788                         }
 789 
 790                         /* hash it up */
 791                         Z_TYPE(new_le) = le_plink;
 792                         new_le.ptr = sybase_ptr;
 793                         if (zend_hash_update(&EG(persistent_list), hashed_details, hashed_details_length+1, (void *) &new_le, sizeof(zend_rsrc_list_entry), NULL)==FAILURE) {
 794                                 ct_close(sybase_ptr->connection, CS_UNUSED);
 795                                 ct_con_drop(sybase_ptr->connection);
 796                                 free(sybase_ptr);
 797                                 efree(hashed_details);
 798                                 RETURN_FALSE;
 799                         }
 800                         SybCtG(num_persistent)++;
 801                         SybCtG(num_links)++;
 802                 } else {  /* we do */
 803                         CS_INT con_status;
 804 
 805                         if (Z_TYPE_P(le) != le_plink) {
 806                                 efree(hashed_details);
 807                                 RETURN_FALSE;
 808                         }
 809 
 810                         sybase_ptr = (sybase_link *) le->ptr;
 811 
 812                         /* If the link has died, close it and overwrite it with a new one. */
 813 
 814                         if (ct_con_props(sybase_ptr->connection, CS_GET, CS_CON_STATUS,
 815                                                          &con_status, CS_UNUSED, NULL)!=CS_SUCCEED) {
 816                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Unable to get connection status");
 817                                 efree(hashed_details);
 818                                 RETURN_FALSE;
 819                         }
 820                         if (!(con_status & CS_CONSTAT_CONNECTED) || (con_status & CS_CONSTAT_DEAD) || sybase_ptr->dead) {
 821                                 sybase_link sybase;
 822 
 823                                 if (con_status & CS_CONSTAT_CONNECTED) {
 824                                         ct_close(sybase_ptr->connection, CS_FORCE_CLOSE);
 825                                 }
 826                                 /* Create a new connection, then replace the old
 827                                  * connection.  If we fail to create a new connection,
 828                                  * put the old one back so there will be a connection,
 829                                  * even if it is a non-functional one.  This is because
 830                                  * code may still be holding an id for this connection
 831                                  * so we can't free the CS_CONNECTION.
 832                                  * (This is actually totally hokey, it would be better
 833                                  * to just ct_con_drop() the connection and set
 834                                  * sybase_ptr->connection to NULL, then test it for
 835                                  * NULL before trying to use it elsewhere . . .)
 836                                  */
 837                                 memcpy(&sybase, sybase_ptr, sizeof(sybase_link));
 838                                 if (!php_sybase_do_connect_internal(sybase_ptr, host, user, passwd, charset, appname TSRMLS_CC)) {
 839                                         memcpy(sybase_ptr, &sybase, sizeof(sybase_link));
 840                                         efree(hashed_details);
 841                                         RETURN_FALSE;
 842                                 }
 843                                 ct_con_drop(sybase.connection); /* drop old connection */
 844                         }
 845                 }
 846                 ZEND_REGISTER_RESOURCE(return_value, sybase_ptr, le_plink);
 847         } else { /* non persistent */
 848                 zend_rsrc_list_entry *index_ptr, new_index_ptr;
 849 
 850                 /* first we check the hash for the hashed_details key.  if it exists,
 851                  * it should point us to the right offset where the actual sybase link sits.
 852                  * if it doesn't, open a new sybase link, add it to the resource list,
 853                  * and add a pointer to it with hashed_details as the key.
 854                  */
 855                 if (!new && zend_hash_find(&EG(regular_list), hashed_details, hashed_details_length+1, (void **) &index_ptr)==SUCCESS) {
 856                         int type, link;
 857                         void *ptr;
 858 
 859                         if (Z_TYPE_P(index_ptr) != le_index_ptr) {
 860                                 efree(hashed_details);
 861                                 RETURN_FALSE;
 862                         }
 863                         link = (int) index_ptr->ptr;
 864                         ptr = zend_list_find(link, &type);   /* check if the link is still there */
 865                         if (ptr && (type==le_link || type==le_plink)) {
 866                                 zend_list_addref(link);
 867                                 Z_LVAL_P(return_value) = SybCtG(default_link) = link;
 868                                 Z_TYPE_P(return_value) = IS_RESOURCE;
 869                                 efree(hashed_details);
 870                                 return;
 871                         } else {
 872                                 zend_hash_del(&EG(regular_list), hashed_details, hashed_details_length+1);
 873                         }
 874                 }
 875                 if (SybCtG(max_links)!=-1 && SybCtG(num_links)>=SybCtG(max_links)) {
 876                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Too many open links (%ld)", SybCtG(num_links));
 877                         efree(hashed_details);
 878                         RETURN_FALSE;
 879                 }
 880 
 881                 sybase_ptr = (sybase_link *) emalloc(sizeof(sybase_link));
 882                 if (!php_sybase_do_connect_internal(sybase_ptr, host, user, passwd, charset, appname TSRMLS_CC)) {
 883                         efree(sybase_ptr);
 884                         efree(hashed_details);
 885                         RETURN_FALSE;
 886                 }
 887 
 888                 /* add it to the list */
 889                 ZEND_REGISTER_RESOURCE(return_value, sybase_ptr, le_link);
 890 
 891                 /* add it to the hash */
 892                 new_index_ptr.ptr = (void *) Z_LVAL_P(return_value);
 893                 Z_TYPE(new_index_ptr) = le_index_ptr;
 894                 if (zend_hash_update(&EG(regular_list), hashed_details, hashed_details_length+1, (void *) &new_index_ptr, sizeof(zend_rsrc_list_entry), NULL)==FAILURE) {
 895                         ct_close(sybase_ptr->connection, CS_UNUSED);
 896                         ct_con_drop(sybase_ptr->connection);
 897                         efree(sybase_ptr);
 898                         efree(hashed_details);
 899                         RETURN_FALSE;
 900                 }
 901                 SybCtG(num_links)++;
 902         }
 903         efree(hashed_details);
 904         SybCtG(default_link)=Z_LVAL_P(return_value);
 905         zend_list_addref(SybCtG(default_link));
 906 }
 907 
 908 
 909 static int php_sybase_get_default_link(INTERNAL_FUNCTION_PARAMETERS)
 910 {
 911         if (SybCtG(default_link)==-1) { /* no link opened yet, implicitly open one */
 912                 ht = 0;
 913                 php_sybase_do_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
 914         }
 915         return SybCtG(default_link);
 916 }
 917 
 918 
 919 /* {{{ proto int sybase_connect([string host [, string user [, string password [, string charset [, string appname [, bool new]]]]]])
 920    Open Sybase server connection */
 921 PHP_FUNCTION(sybase_connect)
 922 {
 923         php_sybase_do_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
 924 }
 925 
 926 /* }}} */
 927 
 928 /* {{{ proto int sybase_pconnect([string host [, string user [, string password [, string charset [, string appname]]]]])
 929    Open persistent Sybase connection */
 930 PHP_FUNCTION(sybase_pconnect)
 931 {
 932         php_sybase_do_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
 933 }
 934 
 935 /* }}} */
 936 
 937 inline static int php_sybase_connection_id(zval *sybase_link_index, int *id TSRMLS_DC)
 938 {
 939         if (NULL == sybase_link_index) {
 940                 if (-1 == SybCtG(default_link)) {
 941                         return FAILURE;
 942                 }
 943                 *id = SybCtG(default_link);
 944         } else {
 945                 *id = -1;   /* explicit resource number */
 946         }
 947         return SUCCESS;
 948 }
 949 
 950 /* {{{ proto bool sybase_close([resource link_id])
 951    Close Sybase connection */
 952 PHP_FUNCTION(sybase_close)
 953 {
 954         zval *sybase_link_index = NULL;
 955         sybase_link *sybase_ptr;
 956         int id;
 957 
 958         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|r", &sybase_link_index) == FAILURE) {
 959                 return;
 960         }
 961 
 962         if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
 963                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection to close");
 964                 RETURN_FALSE;
 965         }
 966 
 967         ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);
 968 
 969         if (id == -1) {
 970                 zend_list_delete(Z_RESVAL_P(sybase_link_index));
 971         }
 972         if (id != -1 || (sybase_link_index && Z_RESVAL_P(sybase_link_index) == SybCtG(default_link))) {
 973                 zend_list_delete(SybCtG(default_link));
 974                 SybCtG(default_link) = -1;
 975         }
 976 
 977         RETURN_TRUE;
 978 }
 979 
 980 /* }}} */
 981 
 982 
 983 static int exec_cmd(sybase_link *sybase_ptr, char *cmdbuf)
 984 {
 985         CS_RETCODE retcode;
 986         CS_INT restype;
 987         int failure=0;
 988 
 989         /* Fail if we already marked this connection dead. */
 990 
 991         if (sybase_ptr->dead) {
 992                 return FAILURE;
 993         }
 994 
 995         /*
 996          ** Get a command handle, store the command string in it, and
 997          ** send it to the server.
 998          */
 999 
1000         if (ct_command(sybase_ptr->cmd, CS_LANG_CMD, cmdbuf, CS_NULLTERM, CS_UNUSED)!=CS_SUCCEED) {
1001                 sybase_ptr->dead = 1;
1002                 return FAILURE;
1003         }
1004         if (ct_send(sybase_ptr->cmd)!=CS_SUCCEED) {
1005                 sybase_ptr->dead = 1;
1006                 return FAILURE;
1007         }
1008 
1009         while ((retcode = ct_results(sybase_ptr->cmd, &restype))==CS_SUCCEED) {
1010                 switch ((int) restype) {
1011                         case CS_CMD_SUCCEED:
1012                         case CS_CMD_DONE:
1013                                 break;
1014 
1015                         case CS_CMD_FAIL:
1016                                 failure=1;
1017                                 break;
1018 
1019                         case CS_STATUS_RESULT:
1020                                 ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_CURRENT);
1021                                 break;
1022 
1023                         default:
1024                                 failure=1;
1025                                 break;
1026                 }
1027                 if (failure) {
1028                         ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
1029                         return FAILURE;
1030                 }
1031         }
1032 
1033         switch (retcode) {
1034                 case CS_END_RESULTS:
1035                         return SUCCESS;
1036                         break;
1037 
1038                 case CS_FAIL:
1039                         /* Hopefully this either cleans up the connection, or the
1040                          * connection ends up marked dead so it will be reopened
1041                          * if it is persistent.  We may want to do
1042                          * ct_close(CS_FORCE_CLOSE) if ct_cancel() fails; see the
1043                          * doc for ct_results()==CS_FAIL.
1044                          */
1045                         ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
1046                         /* Don't take chances with the vagaries of ct-lib.  Mark it
1047                          * dead ourselves.
1048                          */
1049                         sybase_ptr->dead = 1;
1050                         return FAILURE;
1051 
1052                 default:
1053                         return FAILURE;
1054         }
1055 }
1056 
1057 
1058 /* {{{ proto bool sybase_select_db(string database [, resource link_id])
1059    Select Sybase database */
1060 PHP_FUNCTION(sybase_select_db)
1061 {
1062         zval *sybase_link_index = NULL;
1063         char *db, *cmdbuf;
1064         int id, len;
1065         sybase_link *sybase_ptr;
1066 
1067         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|r", &db, &len, &sybase_link_index) == FAILURE) {
1068                 return;
1069         }
1070 
1071         if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
1072                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection");
1073                 RETURN_FALSE;
1074         }
1075 
1076         ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);
1077 
1078         spprintf(&cmdbuf, 4 + len + 1, "use %s", db);
1079         if (exec_cmd(sybase_ptr, cmdbuf) == FAILURE) {
1080                 efree(cmdbuf);
1081                 RETURN_FALSE;
1082         } else {
1083                 efree(cmdbuf);
1084                 RETURN_TRUE;
1085         }
1086 }
1087 
1088 /* }}} */
1089 
1090 static int php_sybase_finish_results(sybase_result *result TSRMLS_DC) 
1091 {
1092         int i, fail;
1093         CS_RETCODE retcode;
1094         CS_INT restype;
1095         
1096         efree_n(result->datafmt);
1097         efree_n(result->lengths);
1098         efree_n(result->indicators);
1099         efree_n(result->numerics);
1100         efree_n(result->types);
1101         for (i=0; i<result->num_fields; i++) {
1102                 efree(result->tmp_buffer[i]);
1103         }
1104         efree_n(result->tmp_buffer);
1105 
1106         /* Indicate we have read all rows */
1107         result->sybase_ptr->active_result_index= 0;
1108 
1109         /* The only restype we should get now is CS_CMD_DONE, possibly
1110          * followed by a CS_STATUS_RESULT/CS_CMD_SUCCEED/CS_CMD_DONE
1111          * sequence if the command was a stored procedure call.  But we
1112          * still need to read and discard unexpected results.  We might
1113          * want to return a failure in this case because the application
1114          * won't be getting all the results it asked for.
1115          */
1116         fail = 0;
1117         while ((retcode = ct_results(result->sybase_ptr->cmd, &restype))==CS_SUCCEED) {
1118                 switch ((int) restype) {
1119                         case CS_CMD_SUCCEED:
1120                         case CS_CMD_DONE:
1121                                 break;
1122 
1123                         case CS_CMD_FAIL:
1124                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Command failed, canceling rest");
1125                                 ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
1126                                 fail = 1;
1127                                 break;
1128 
1129                         case CS_COMPUTE_RESULT:
1130                         case CS_CURSOR_RESULT:
1131                         case CS_PARAM_RESULT:
1132                         case CS_ROW_RESULT:
1133                                 /* Unexpected results, cancel them. */
1134                                 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Unexpected results, canceling current");
1135                                 ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_CURRENT);
1136                                 break;
1137 
1138                         case CS_STATUS_RESULT:
1139                                 /* Status result from a stored procedure, cancel it but do not tell user */
1140                                 ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_CURRENT);
1141                                 break;
1142 
1143                         default:
1144                                 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Unexpected results, canceling all");
1145                                 ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
1146                                 break;
1147                 }
1148 
1149                 if (fail) {
1150                         break;
1151                 }
1152         }
1153 
1154         switch (retcode) {
1155                 case CS_END_RESULTS:
1156                         /* Normal. */
1157                         break;
1158 
1159                 case CS_FAIL:
1160                         /* Hopefully this either cleans up the connection, or the
1161                          * connection ends up marked dead so it will be reopened
1162                          * if it is persistent.  We may want to do
1163                          * ct_close(CS_FORCE_CLOSE) if ct_cancel() fails; see the
1164                          * doc for ct_results()==CS_FAIL.
1165                          */
1166                         ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
1167                         /* Don't take chances with the vagaries of ct-lib.  Mark it
1168                          * dead ourselves.
1169                          */
1170                         result->sybase_ptr->dead = 1;
1171                         
1172                 case CS_CANCELED:
1173                 default:
1174                         retcode = CS_FAIL;
1175                         break;
1176         }
1177 
1178         return retcode;
1179 }
1180 
1181 #define RETURN_DOUBLE_VAL(result, buf, length)          \
1182         if ((length - 1) <= EG(precision)) {                \
1183                 errno = 0;                                      \
1184                 Z_DVAL(result) = zend_strtod(buf, NULL);        \
1185                 if (errno != ERANGE) {                          \
1186                         Z_TYPE(result) = IS_DOUBLE;                 \
1187                 } else {                                        \
1188                         ZVAL_STRINGL(&result, buf, length- 1, 1);   \
1189                 }                                               \
1190         } else {                                            \
1191                 ZVAL_STRINGL(&result, buf, length- 1, 1);       \
1192         }
1193 
1194 static int php_sybase_fetch_result_row(sybase_result *result, int numrows TSRMLS_DC)
1195 {
1196         int i, j;
1197         CS_INT retcode;
1198         
1199         /* We've already fetched everything */
1200         if (result->last_retcode == CS_END_DATA || result->last_retcode == CS_END_RESULTS) {
1201                 return result->last_retcode;
1202         }
1203         
1204         if (numrows!=-1) numrows+= result->num_rows;
1205         while ((retcode=ct_fetch(result->sybase_ptr->cmd, CS_UNUSED, CS_UNUSED, CS_UNUSED, NULL))==CS_SUCCEED || retcode == CS_ROW_FAIL) {
1206                 result->num_rows++;
1207                 i= result->store ? result->num_rows- 1 : 0;
1208                 if (i >= result->blocks_initialized*SYBASE_ROWS_BLOCK) {
1209                         result->data = (zval **) safe_erealloc(result->data, SYBASE_ROWS_BLOCK*(++result->blocks_initialized), sizeof(zval *), 0);
1210                 }
1211                 if (result->store || 1 == result->num_rows) {
1212                         result->data[i] = (zval *) safe_emalloc(sizeof(zval), result->num_fields, 0);
1213                 }
1214 
1215                 for (j = 0; j < result->num_fields; j++) {
1216 
1217                         /* If we are in non-storing mode, free the previous result */
1218                         if (!result->store && result->num_rows > 1 && Z_TYPE(result->data[i][j]) == IS_STRING) {
1219                                 efree(Z_STRVAL(result->data[i][j]));
1220                         }
1221 
1222                         if (result->indicators[j] == -1) { /* null value */
1223                                 ZVAL_NULL(&result->data[i][j]);
1224                         } else {
1225                                 switch (result->numerics[j]) {
1226                                         case 1: {
1227                                                 /* This indicates a long */
1228                                                 ZVAL_LONG(&result->data[i][j], strtol(result->tmp_buffer[j], NULL, 10));
1229                                                 break;
1230                                         }
1231                                         
1232                                         case 2: {
1233                                                 /* This indicates a float */
1234                                                 RETURN_DOUBLE_VAL(result->data[i][j], result->tmp_buffer[j], result->lengths[j]); 
1235                                                 break;
1236                                         }
1237 
1238                                         case 3: {
1239                                                 /* This indicates either a long or a float, which ever fits */
1240                                                 errno = 0;
1241                                                 Z_LVAL(result->data[i][j]) = strtol(result->tmp_buffer[j], NULL, 10);
1242                                                 if (errno == ERANGE) {
1243                                                 
1244                                                         /* An overflow occurred, so try to fit it into a double */
1245                                                         RETURN_DOUBLE_VAL(result->data[i][j], result->tmp_buffer[j], result->lengths[j]); 
1246                                                         break;
1247                                                 }
1248                                                 Z_TYPE(result->data[i][j]) = IS_LONG;
1249                                                 break;
1250                                         }
1251                                         
1252                                         default: {
1253                                                 /* This indicates anything else, return it as string
1254                                                  * FreeTDS doesn't correctly set result->indicators[j] correctly
1255                                                  * for NULL fields in some version in conjunction with ASE 12.5
1256                                                  * but instead sets result->lengths[j] to 0, which would lead to
1257                                                  * a negative memory allocation (and thus a segfault).
1258                                                  */
1259                                                 if (result->lengths[j] < 1) {
1260                                                         ZVAL_NULL(&result->data[i][j]);
1261                                                 } else {
1262                                                         ZVAL_STRINGL(&result->data[i][j], result->tmp_buffer[j], result->lengths[j]- 1, 1);
1263                                                 }
1264                                                 break;
1265                                         }
1266                                 }
1267                         }
1268                 }
1269                 if (numrows!=-1 && result->num_rows>=numrows) break;
1270         }
1271 
1272         if (retcode==CS_ROW_FAIL) {
1273                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Error reading row %d", result->num_rows);
1274                 return retcode;
1275         }
1276         result->last_retcode= retcode;
1277         switch (retcode) {
1278                 case CS_END_DATA:
1279                         retcode = php_sybase_finish_results(result TSRMLS_CC);
1280                         break;
1281                         
1282                 case CS_ROW_FAIL:
1283                 case CS_SUCCEED:
1284                         break;
1285                         
1286                 default:
1287                         FREE_SYBASE_RESULT(result);
1288                         result = NULL;
1289                         retcode = CS_FAIL;              /* Just to be sure */
1290                         break;
1291         }
1292         
1293         return retcode;
1294 }
1295 
1296 static sybase_result * php_sybase_fetch_result_set(sybase_link *sybase_ptr, int buffered, int store TSRMLS_DC)
1297 {
1298         int num_fields;
1299         sybase_result *result;
1300         int i, j;
1301         CS_INT retcode;
1302 
1303         /* The following (if unbuffered) is more or less the equivalent of mysql_store_result().
1304          * fetch all rows from the server into the row buffer, thus:
1305          * 1)  Being able to fire up another query without explicitly reading all rows
1306          * 2)  Having numrows accessible
1307          */
1308         if (ct_res_info(sybase_ptr->cmd, CS_NUMDATA, &num_fields, CS_UNUSED, NULL)!=CS_SUCCEED) {
1309                 return NULL;
1310         }
1311         
1312         result = (sybase_result *) emalloc(sizeof(sybase_result));
1313         result->data = (zval **) safe_emalloc(sizeof(zval *), SYBASE_ROWS_BLOCK, 0);
1314         result->fields = NULL;
1315         result->sybase_ptr = sybase_ptr;
1316         result->cur_field=result->cur_row=result->num_rows=0;
1317         result->num_fields = num_fields;
1318         result->last_retcode = 0;
1319         result->store= store;
1320         result->blocks_initialized= 1;
1321         result->tmp_buffer = (char **) safe_emalloc(sizeof(char *), num_fields, 0);
1322         result->lengths = (CS_INT *) safe_emalloc(sizeof(CS_INT), num_fields, 0);
1323         result->indicators = (CS_SMALLINT *) safe_emalloc(sizeof(CS_INT), num_fields, 0);
1324         result->datafmt = (CS_DATAFMT *) safe_emalloc(sizeof(CS_DATAFMT), num_fields, 0);
1325         result->numerics = (unsigned char *) safe_emalloc(sizeof(unsigned char), num_fields, 0);
1326         result->types = (CS_INT *) safe_emalloc(sizeof(CS_INT), num_fields, 0);
1327         
1328         for (i=0; i<num_fields; i++) {
1329                 ct_describe(sybase_ptr->cmd, i+1, &result->datafmt[i]);
1330                 result->types[i] = result->datafmt[i].datatype;
1331                 switch (result->datafmt[i].datatype) {
1332                         case CS_CHAR_TYPE:
1333                         case CS_VARCHAR_TYPE:
1334                         case CS_TEXT_TYPE:
1335                         case CS_IMAGE_TYPE:
1336                                 result->datafmt[i].maxlength++;
1337                                 result->numerics[i] = 0;
1338                                 break;
1339                         case CS_BINARY_TYPE:
1340                         case CS_VARBINARY_TYPE:
1341                                 result->datafmt[i].maxlength *= 2;
1342                                 result->datafmt[i].maxlength++;
1343                                 result->numerics[i] = 0;
1344                                 break;
1345                         case CS_BIT_TYPE:
1346                         case CS_TINYINT_TYPE:
1347                                 result->datafmt[i].maxlength = 4;
1348                                 result->numerics[i] = 1;
1349                                 break;
1350                         case CS_SMALLINT_TYPE:
1351                                 result->datafmt[i].maxlength = 7;
1352                                 result->numerics[i] = 1;
1353                                 break;
1354                         case CS_INT_TYPE:
1355                                 result->datafmt[i].maxlength = 12;
1356                                 result->numerics[i] = 1;
1357                                 break;
1358                         case CS_REAL_TYPE:
1359                         case CS_FLOAT_TYPE:
1360                                 result->datafmt[i].maxlength = 24;
1361                                 result->numerics[i] = 2;
1362                                 break;
1363                         case CS_MONEY_TYPE:
1364                         case CS_MONEY4_TYPE:
1365                                 result->datafmt[i].maxlength = 24;
1366                                 result->numerics[i] = 2;
1367                                 break;
1368                         case CS_DATETIME_TYPE:
1369                         case CS_DATETIME4_TYPE:
1370                                 result->datafmt[i].maxlength = 30;
1371                                 result->numerics[i] = 0;
1372                                 break;
1373                         case CS_NUMERIC_TYPE:
1374                         case CS_DECIMAL_TYPE:
1375                                 result->datafmt[i].maxlength = result->datafmt[i].precision + 3;
1376                                 /* numeric(10) vs numeric(10, 1) */
1377                                 result->numerics[i] = (result->datafmt[i].scale == 0) ? 3 : 2;
1378                                 break;
1379                         default:
1380                                 result->datafmt[i].maxlength++;
1381                                 result->numerics[i] = 0;
1382                                 break;
1383                 }
1384                 result->tmp_buffer[i] = (char *)emalloc(result->datafmt[i].maxlength);
1385                 result->datafmt[i].datatype = CS_CHAR_TYPE;
1386                 result->datafmt[i].format = CS_FMT_NULLTERM;
1387                 ct_bind(sybase_ptr->cmd, i+1, &result->datafmt[i], result->tmp_buffer[i], &result->lengths[i], &result->indicators[i]);
1388         }
1389 
1390         result->fields = (sybase_field *) safe_emalloc(sizeof(sybase_field), num_fields, 0);
1391         j=0;
1392         for (i=0; i<num_fields; i++) {
1393                 char computed_buf[16];
1394 
1395                 if (result->datafmt[i].namelen>0) {
1396                         result->fields[i].name = estrndup(result->datafmt[i].name, result->datafmt[i].namelen);
1397                 } else {
1398                         if (j>0) {
1399                                 snprintf(computed_buf, 16, "computed%d", j);
1400                         } else {
1401                                 strcpy(computed_buf, "computed");
1402                         }
1403                         result->fields[i].name = estrdup(computed_buf);
1404                         j++;
1405                 }
1406                 result->fields[i].column_source = STR_EMPTY_ALLOC();
1407                 result->fields[i].max_length = result->datafmt[i].maxlength-1;
1408                 result->fields[i].numeric = result->numerics[i];
1409                 Z_TYPE(result->fields[i]) = result->types[i];
1410         }
1411         
1412         if (buffered) {
1413                 retcode = CS_SUCCEED;
1414         } else {
1415                 if ((retcode = php_sybase_fetch_result_row(result, -1 TSRMLS_CC)) == CS_FAIL) {
1416                         return NULL;
1417                 }
1418         }
1419 
1420         result->last_retcode = retcode;
1421         return result;
1422 }
1423 
1424 static void php_sybase_query (INTERNAL_FUNCTION_PARAMETERS, int buffered)
1425 {
1426         zval *sybase_link_index = NULL;
1427         zend_bool store = 1;
1428         char *query;
1429         int len, id, deadlock_count;
1430         sybase_link *sybase_ptr;
1431         sybase_result *result;
1432         CS_INT restype;
1433         CS_RETCODE retcode;
1434         enum {
1435                 Q_RESULT,                               /* Success with results. */
1436                 Q_SUCCESS,                              /* Success but no results. */
1437                 Q_FAILURE,                              /* Failure, no results. */
1438         } status;
1439 
1440         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|rb", &query, &len, &sybase_link_index, &store) == FAILURE) {
1441                 return;
1442         }
1443 
1444         if (!store && !buffered) {
1445                 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Cannot use non-storing mode with buffered queries");
1446                 store = 1;
1447         }
1448 
1449         if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
1450                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection");
1451                 RETURN_FALSE;
1452         }
1453 
1454         ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);
1455 
1456         /* Fail if we already marked this connection dead. */
1457         if (sybase_ptr->dead) {
1458                 RETURN_FALSE;
1459         }
1460         
1461         /* Check to see if a previous sybase_unbuffered_query has read all rows */
1462         if (sybase_ptr->active_result_index) {
1463                 zval *tmp = NULL;
1464                 
1465                 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Called without first fetching all rows from a previous unbuffered query");
1466                 if (sybase_ptr->cmd) {
1467                         ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
1468                 }
1469                 
1470                 /* Get the resultset and free it */
1471                 ALLOC_ZVAL(tmp);
1472                 Z_LVAL_P(tmp)= sybase_ptr->active_result_index;
1473                 Z_TYPE_P(tmp)= IS_RESOURCE;
1474                 INIT_PZVAL(tmp);
1475                 ZEND_FETCH_RESOURCE(result, sybase_result *, &tmp, -1, "Sybase result", le_result);
1476                 
1477                 if (result) {
1478                         php_sybase_finish_results(result TSRMLS_CC);
1479                 }
1480                 
1481                 zval_ptr_dtor(&tmp);
1482                 zend_list_delete(sybase_ptr->active_result_index);
1483                 sybase_ptr->active_result_index= 0;
1484         }
1485 
1486         /* Repeat until we don't deadlock. */
1487         deadlock_count= 0;
1488         for (;;) {
1489                 result = NULL;
1490                 sybase_ptr->deadlock = 0;
1491                 sybase_ptr->affected_rows = 0;
1492 
1493                 /* On Solaris 11.5, ct_command() can be moved outside the
1494                  * loop, but not on Linux 11.0.
1495                  */
1496                 if (ct_command(sybase_ptr->cmd, CS_LANG_CMD, query, CS_NULLTERM, CS_UNUSED)!=CS_SUCCEED) {
1497                         /* If this didn't work, the connection is screwed but
1498                          * ct-lib might not set CS_CONSTAT_DEAD.  So set our own
1499                          * flag.  This happens sometimes when the database is restarted
1500                          * and/or its machine is rebooted, and ct_command() returns
1501                          * CS_BUSY for some reason.
1502                          */
1503                         sybase_ptr->dead = 1;
1504                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Connection is dead");
1505                         RETURN_FALSE;
1506                 }
1507 
1508                 if (ct_send(sybase_ptr->cmd)!=CS_SUCCEED) {
1509                         ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
1510                         sybase_ptr->dead = 1;
1511                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Cannot send command");
1512                         RETURN_FALSE;
1513                 }
1514 
1515                 /* Use the first result set or succeed/fail status and discard the
1516                  * others.  Applications really shouldn't be making calls that
1517                  * return multiple result sets, but if they do then we need to
1518                  * properly read or cancel them or the connection will become
1519                  * unusable.
1520                  */
1521                 if (ct_results(sybase_ptr->cmd, &restype)!=CS_SUCCEED) {
1522                         ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
1523                         sybase_ptr->dead = 1;
1524                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Cannot read results");
1525                         RETURN_FALSE;
1526                 }
1527                 switch ((int) restype) {
1528                         case CS_CMD_FAIL:
1529                         default:
1530                                 status = Q_FAILURE;
1531                                 break;
1532                         case CS_CMD_SUCCEED:
1533                         case CS_CMD_DONE: {
1534                                         CS_INT row_count;
1535                                         if (ct_res_info(sybase_ptr->cmd, CS_ROW_COUNT, &row_count, CS_UNUSED, NULL)==CS_SUCCEED) {
1536                                                 sybase_ptr->affected_rows = (long)row_count;
1537                                         }
1538                                 }
1539                                 /* Fall through */
1540                         case CS_COMPUTEFMT_RESULT:
1541                         case CS_ROWFMT_RESULT:
1542                         case CS_DESCRIBE_RESULT:
1543                         case CS_MSG_RESULT:
1544                                 buffered= 0;                            /* These queries have no need for buffering */
1545                                 status = Q_SUCCESS;
1546                                 break;
1547                         case CS_COMPUTE_RESULT:
1548                         case CS_CURSOR_RESULT:
1549                         case CS_PARAM_RESULT:
1550                         case CS_ROW_RESULT:
1551                         case CS_STATUS_RESULT:
1552                                 result = php_sybase_fetch_result_set(sybase_ptr, buffered, store TSRMLS_CC);
1553                                 if (result == NULL) {
1554                                         ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
1555                                         RETURN_FALSE;
1556                                 }
1557                                 status = Q_RESULT;
1558                                 break;
1559                 }
1560                 
1561                 /* Check for left-over results */
1562                 if (!buffered && status != Q_RESULT) {
1563                         while ((retcode = ct_results(sybase_ptr->cmd, &restype))==CS_SUCCEED) {
1564                                 switch ((int) restype) {
1565                                         case CS_CMD_SUCCEED:
1566                                         case CS_CMD_DONE:
1567                                                 break;
1568 
1569                                         case CS_CMD_FAIL:
1570                                                 status = Q_FAILURE;
1571                                                 break;
1572 
1573                                         case CS_COMPUTE_RESULT:
1574                                         case CS_CURSOR_RESULT:
1575                                         case CS_PARAM_RESULT:
1576                                         case CS_ROW_RESULT:
1577                                                 if (status != Q_RESULT) {
1578                                                         result = php_sybase_fetch_result_set(sybase_ptr, buffered, store TSRMLS_CC);
1579                                                         if (result == NULL) {
1580                                                                 ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
1581                                                                 sybase_ptr->dead = 1;
1582                                                                 RETURN_FALSE;
1583                                                         }
1584                                                         status = Q_RESULT;
1585                                                         retcode = result->last_retcode; 
1586                                                 } else {
1587                                                         /* Unexpected results, cancel them. */
1588                                                         ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_CURRENT);
1589                                                 }
1590                                                 break;
1591                                         case CS_STATUS_RESULT:
1592                                                 /* Unexpected results, cancel them. */
1593                                                 ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_CURRENT);
1594                                                 break;
1595 
1596                                         default:
1597                                                 status = Q_FAILURE;
1598                                                 break;
1599                                 }
1600                                 if (status == Q_FAILURE) {
1601                                         ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
1602                                 }
1603                                 if (retcode == CS_END_RESULTS) {
1604                                         break;
1605                                 }
1606                         }
1607                         switch (retcode) {
1608                                 case CS_END_RESULTS:
1609                                         /* Normal. */
1610                                         break;
1611 
1612                                 case CS_FAIL:
1613                                         /* Hopefully this either cleans up the connection, or the
1614                                          * connection ends up marked dead so it will be reopened
1615                                          * if it is persistent.  We may want to do
1616                                          * ct_close(CS_FORCE_CLOSE) if ct_cancel() fails; see the
1617                                          * doc for ct_results()==CS_FAIL.
1618                                          */
1619                                         ct_cancel(NULL, sybase_ptr->cmd, CS_CANCEL_ALL);
1620                                         /* Don't take chances with the vagaries of ct-lib.  Mark it
1621                                          * dead ourselves.
1622                                          */
1623                                         sybase_ptr->dead = 1;
1624                                 case CS_CANCELED:
1625                                 default:
1626                                         status = Q_FAILURE;
1627                                         break;
1628                         }
1629                 }
1630 
1631                 /* Retry deadlocks up until deadlock_retry_count times */               
1632                 if (sybase_ptr->deadlock && SybCtG(deadlock_retry_count) != -1 && ++deadlock_count > SybCtG(deadlock_retry_count)) {
1633                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Retried deadlock %d times [max: %ld], giving up", deadlock_count- 1, SybCtG(deadlock_retry_count));
1634                         FREE_SYBASE_RESULT(result);
1635                         break;
1636                 }
1637 
1638                 /* If query completed without deadlock, break out of the loop.
1639                  * Sometimes deadlock results in failures and sometimes not,
1640                  * it seems to depend on the server flavor.  But we want to
1641                  * retry all deadlocks.
1642                  */
1643                 if (sybase_ptr->dead || sybase_ptr->deadlock == 0) {
1644                         break;
1645                 }
1646 
1647                 /* Get rid of any results we may have fetched.  This happens:
1648                  * e.g., our result set may be a stored procedure status which
1649                  * is returned even if the stored procedure deadlocks.  As an
1650                  * optimization, we could try not to fetch results in known
1651                  * deadlock conditions, but deadlock is (should be) rare.
1652                  */
1653                 FREE_SYBASE_RESULT(result);
1654         }
1655 
1656         if (status == Q_SUCCESS) {
1657                 RETURN_TRUE;
1658         }
1659 
1660         if (status == Q_FAILURE) {
1661                 FREE_SYBASE_RESULT(result);
1662                 RETURN_FALSE;
1663         }
1664 
1665         /* Indicate we have data in case of buffered queries */
1666         id= ZEND_REGISTER_RESOURCE(return_value, result, le_result);
1667         sybase_ptr->active_result_index= buffered ? id : 0;
1668 }
1669 
1670 /* {{{ proto int sybase_query(string query [, resource link_id])
1671    Send Sybase query */
1672 PHP_FUNCTION(sybase_query)
1673 {
1674         php_sybase_query(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
1675 }
1676 /* }}} */
1677 
1678 /* {{{ proto int sybase_unbuffered_query(string query [, resource link_id])
1679    Send Sybase query */
1680 PHP_FUNCTION(sybase_unbuffered_query)
1681 {
1682         php_sybase_query(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
1683 }
1684 
1685 /* {{{ proto bool sybase_free_result(resource result)
1686    Free result memory */
1687 PHP_FUNCTION(sybase_free_result)
1688 {
1689         zval *sybase_result_index = NULL;
1690         sybase_result *result;
1691 
1692         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
1693                 return;
1694         }
1695         ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
1696         
1697         /* Did we fetch up until the end? */
1698         if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS) {
1699                 /* php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  canceling the rest of the results"); */
1700                 ct_cancel(NULL, result->sybase_ptr->cmd, CS_CANCEL_ALL);
1701                 php_sybase_finish_results(result TSRMLS_CC);
1702         }
1703         
1704         zend_list_delete(Z_LVAL_P(sybase_result_index));
1705         RETURN_TRUE;
1706 }
1707 
1708 /* }}} */
1709 
1710 /* {{{ proto string sybase_get_last_message(void)
1711    Returns the last message from server (over min_message_severity) */
1712 PHP_FUNCTION(sybase_get_last_message)
1713 {
1714         RETURN_STRING(SybCtG(server_message), 1);
1715 }
1716 /* }}} */
1717 
1718 /* {{{ proto int sybase_num_rows(resource result)
1719    Get number of rows in result */
1720 PHP_FUNCTION(sybase_num_rows)
1721 {
1722         zval *sybase_result_index = NULL;
1723         sybase_result *result;
1724 
1725         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
1726                 return;
1727         }
1728         ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
1729 
1730         Z_LVAL_P(return_value) = result->num_rows;
1731         Z_TYPE_P(return_value) = IS_LONG;
1732 }
1733 
1734 /* }}} */
1735 
1736 /* {{{ proto int sybase_num_fields(resource result)
1737    Get number of fields in result */
1738 PHP_FUNCTION(sybase_num_fields)
1739 {
1740         zval *sybase_result_index = NULL;
1741         sybase_result *result;
1742 
1743         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
1744                 return;
1745         }
1746         ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
1747 
1748         Z_LVAL_P(return_value) = result->num_fields;
1749         Z_TYPE_P(return_value) = IS_LONG;
1750 }
1751 
1752 /* }}} */
1753 
1754 /* {{{ proto array sybase_fetch_row(resource result)
1755    Get row as enumerated array */
1756 PHP_FUNCTION(sybase_fetch_row)
1757 {
1758         zval *sybase_result_index = NULL;
1759         int i;
1760         sybase_result *result;
1761         zval *field_content;
1762 
1763         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
1764                 return;
1765         }
1766         ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
1767 
1768         /* Unbuffered? */
1769         if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS) {
1770                 php_sybase_fetch_result_row(result, 1 TSRMLS_CC);
1771         }
1772         
1773         /* At the end? */
1774         if (result->cur_row >= result->num_rows) {
1775                 RETURN_FALSE;
1776         }
1777 
1778         array_init(return_value);
1779         for (i=0; i<result->num_fields; i++) {
1780                 ALLOC_ZVAL(field_content);
1781                 *field_content = result->data[result->store ? result->cur_row : 0][i];
1782                 INIT_PZVAL(field_content);
1783                 zval_copy_ctor(field_content);
1784                 zend_hash_index_update(Z_ARRVAL_P(return_value), i, (void *) &field_content, sizeof(zval* ), NULL);
1785         }
1786         result->cur_row++;
1787 }
1788 
1789 /* }}} */
1790 
1791 static void php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAMETERS, int numerics)
1792 {
1793         zval *sybase_result_index = NULL;
1794         sybase_result *result;
1795         int i, j;
1796         zval *tmp;
1797         char name[32];
1798 
1799         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &sybase_result_index) == FAILURE) {
1800                 return;
1801         }
1802         ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
1803 
1804         /* Unbuffered ? Fetch next row */
1805         if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS) {
1806                 php_sybase_fetch_result_row(result, 1 TSRMLS_CC);
1807         }
1808 
1809         /* At the end? */
1810         if (result->cur_row >= result->num_rows) {
1811                 RETURN_FALSE;
1812         }
1813 
1814         array_init(return_value);
1815         
1816         j= 1;
1817         for (i=0; i<result->num_fields; i++) {
1818                 ALLOC_ZVAL(tmp);
1819                 *tmp = result->data[result->store ? result->cur_row : 0][i];
1820                 INIT_PZVAL(tmp);
1821                 zval_copy_ctor(tmp);
1822                 if (numerics) {
1823                         zend_hash_index_update(Z_ARRVAL_P(return_value), i, (void *) &tmp, sizeof(zval *), NULL);
1824                         Z_ADDREF_P(tmp);
1825                 }
1826                 
1827                 if (zend_hash_exists(Z_ARRVAL_P(return_value), result->fields[i].name, strlen(result->fields[i].name)+1)) {
1828                         snprintf(name, 32, "%s%d", result->fields[i].name, j);
1829                         result->fields[i].name= estrdup(name);
1830                         j++;
1831                 }
1832                 zend_hash_update(Z_ARRVAL_P(return_value), result->fields[i].name, strlen(result->fields[i].name)+1, (void *) &tmp, sizeof(zval *), NULL);
1833         }
1834         result->cur_row++;
1835 }
1836 
1837 
1838 /* {{{ proto object sybase_fetch_object(resource result [, mixed object])
1839    Fetch row as object */
1840 PHP_FUNCTION(sybase_fetch_object)
1841 {
1842         zval *object = NULL;
1843         zval *sybase_result_index = NULL;
1844         zend_class_entry *ce = NULL;
1845         sybase_result *result;
1846         
1847         /* Was a second parameter given? */
1848         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|z", &sybase_result_index, &object) == FAILURE) {
1849                 return;
1850         }
1851         ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
1852 
1853         ce = ZEND_STANDARD_CLASS_DEF_PTR;
1854         if (NULL != object) {           
1855                 switch (Z_TYPE_P(object)) {
1856                         case IS_OBJECT: {
1857                                 ce = Z_OBJCE_P(object);
1858                                 break;
1859                         }
1860 
1861                         case IS_NULL: {
1862                                 /* Use default (ZEND_STANDARD_CLASS_DEF_PTR) */
1863                                 break;
1864                         }
1865 
1866                         default: {
1867                                 zend_class_entry **pce = NULL;
1868                                 convert_to_string(object);
1869 
1870                                 if (zend_lookup_class(Z_STRVAL_P(object), Z_STRLEN_P(object), &pce TSRMLS_CC) == FAILURE) {
1871                                         php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Sybase:  Class %s has not been declared", Z_STRVAL_P(object));
1872                                         /* Use default (ZEND_STANDARD_CLASS_DEF_PTR) */
1873                                 } else {
1874                                         ce = *pce;
1875                                 }
1876                         }
1877                 }
1878         }
1879 
1880         /* Reset no. of arguments to 1 so that we can use INTERNAL_FUNCTION_PARAM_PASSTHRU */
1881         ht= 1;
1882         php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
1883         if (Z_TYPE_P(return_value) == IS_ARRAY) {
1884                 object_and_properties_init(return_value, ce, Z_ARRVAL_P(return_value));
1885         }
1886 }
1887 /* }}} */
1888 
1889 /* {{{ proto array sybase_fetch_array(resource result)
1890    Fetch row as array */
1891 PHP_FUNCTION(sybase_fetch_array)
1892 {
1893         php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
1894 }
1895 /* }}} */
1896 
1897 /* {{{ proto array sybase_fetch_assoc(resource result)
1898    Fetch row as array without numberic indices */
1899 PHP_FUNCTION(sybase_fetch_assoc)
1900 {
1901         php_sybase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
1902 }
1903 /* }}} */
1904 
1905 /* {{{ proto bool sybase_data_seek(resource result, int offset)
1906    Move internal row pointer */
1907 PHP_FUNCTION(sybase_data_seek)
1908 {
1909         zval *sybase_result_index = NULL;
1910         long offset;
1911         sybase_result *result;
1912 
1913         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rl", &sybase_result_index, &offset) == FAILURE) {
1914                 return;
1915         }
1916         ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
1917 
1918         /* Unbuffered ? */
1919         if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS && offset >= result->num_rows) {
1920                 php_sybase_fetch_result_row(result, offset+ 1 TSRMLS_CC);
1921         }
1922         
1923         if (offset < 0 || offset >= result->num_rows) {
1924                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad row offset %ld, must be betweem 0 and %d", offset, result->num_rows - 1);
1925                 RETURN_FALSE;
1926         }
1927 
1928         result->cur_row = offset;
1929         RETURN_TRUE;
1930 }
1931 /* }}} */
1932 
1933 static char *php_sybase_get_field_name(CS_INT type)
1934 {
1935         switch (type) {
1936                 case CS_CHAR_TYPE:
1937                 case CS_VARCHAR_TYPE:
1938                 case CS_TEXT_TYPE:
1939                         return "string";
1940                         break;
1941                 case CS_IMAGE_TYPE:
1942                         return "image";
1943                         break;
1944                 case CS_BINARY_TYPE:
1945                 case CS_VARBINARY_TYPE:
1946                         return "blob";
1947                         break;
1948                 case CS_BIT_TYPE:
1949                         return "bit";
1950                         break;
1951                 case CS_TINYINT_TYPE:
1952                 case CS_SMALLINT_TYPE:
1953                 case CS_INT_TYPE:
1954                         return "int";
1955                         break;
1956                 case CS_REAL_TYPE:
1957                 case CS_FLOAT_TYPE:
1958                 case CS_NUMERIC_TYPE:
1959                 case CS_DECIMAL_TYPE:
1960                         return "real";
1961                         break;
1962                 case CS_MONEY_TYPE:
1963                 case CS_MONEY4_TYPE:
1964                         return "money";
1965                         break;
1966                 case CS_DATETIME_TYPE:
1967                 case CS_DATETIME4_TYPE:
1968                         return "datetime";
1969                         break;
1970                 default:
1971                         return "unknown";
1972                         break;
1973         }
1974 }
1975 
1976 
1977 /* {{{ proto object sybase_fetch_field(resource result [, int offset])
1978    Get field information */
1979 PHP_FUNCTION(sybase_fetch_field)
1980 {
1981         zval *sybase_result_index = NULL;
1982         long field_offset = -1;
1983         sybase_result *result;
1984 
1985         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|l", &sybase_result_index, &field_offset) == FAILURE) {
1986                 return;
1987         }
1988         ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
1989 
1990         if (field_offset == -1) {
1991                 field_offset = result->cur_field;
1992                 result->cur_field++;
1993         }
1994 
1995         if (field_offset < 0 || field_offset >= result->num_fields) {
1996                 if (ZEND_NUM_ARGS() == 2) { /* field specified explicitly */
1997                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad column offset");
1998                 }
1999                 RETURN_FALSE;
2000         }
2001 
2002         object_init(return_value);
2003 
2004         add_property_string(return_value, "name", result->fields[field_offset].name, 1);
2005         add_property_long(return_value, "max_length", result->fields[field_offset].max_length);
2006         add_property_string(return_value, "column_source", result->fields[field_offset].column_source, 1);
2007         add_property_long(return_value, "numeric", result->fields[field_offset].numeric);
2008         add_property_string(return_value, "type", php_sybase_get_field_name(Z_TYPE(result->fields[field_offset])), 1);
2009 }
2010 /* }}} */
2011 
2012 
2013 /* {{{ proto bool sybase_field_seek(resource result, int offset)
2014    Set field offset */
2015 PHP_FUNCTION(sybase_field_seek)
2016 {
2017         zval *sybase_result_index = NULL;
2018         long field_offset;
2019         sybase_result *result;
2020 
2021         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rl", &sybase_result_index, &field_offset) == FAILURE) {
2022                 return;
2023         }
2024         ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
2025 
2026         if (field_offset < 0 || field_offset >= result->num_fields) {
2027                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad column offset");
2028                 RETURN_FALSE;
2029         }
2030 
2031         result->cur_field = field_offset;
2032         RETURN_TRUE;
2033 }
2034 /* }}} */
2035 
2036 
2037 /* {{{ proto string sybase_result(resource result, int row, mixed field)
2038    Get result data */
2039 PHP_FUNCTION(sybase_result)
2040 {
2041         zval *field;
2042         zval *sybase_result_index = NULL;
2043         long row;
2044         int field_offset = 0;
2045         sybase_result *result;
2046 
2047         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rlz", &sybase_result_index, &row, &field) == FAILURE) {
2048                 return;
2049         }
2050         ZEND_FETCH_RESOURCE(result, sybase_result *, &sybase_result_index, -1, "Sybase result", le_result);
2051         
2052         /* Unbuffered ? */
2053         if (result->last_retcode != CS_END_DATA && result->last_retcode != CS_END_RESULTS && row >= result->num_rows) {
2054                 php_sybase_fetch_result_row(result, row TSRMLS_CC);
2055         }
2056 
2057         if (row < 0 || row >= result->num_rows) {
2058                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad row offset (%ld)", row);
2059                 RETURN_FALSE;
2060         }
2061 
2062         switch(Z_TYPE_P(field)) {
2063                 case IS_STRING: {
2064                         int i;
2065 
2066                         for (i = 0; i < result->num_fields; i++) {
2067                                 if (strcasecmp(result->fields[i].name, Z_STRVAL_P(field)) == 0) {
2068                                         field_offset = i;
2069                                         break;
2070                                 }
2071                         }
2072                         if (i >= result->num_fields) { /* no match found */
2073                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  %s field not found in result", Z_STRVAL_P(field));
2074                                 RETURN_FALSE;
2075                         }
2076                         break;
2077                 }
2078                 default:
2079                         convert_to_long(field);
2080                         field_offset = Z_LVAL_P(field);
2081                         if (field_offset < 0 || field_offset >= result->num_fields) {
2082                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  Bad column offset specified");
2083                                 RETURN_FALSE;
2084                         }
2085                         break;
2086         }
2087 
2088         *return_value = result->data[row][field_offset];
2089         zval_copy_ctor(return_value);
2090 }
2091 /* }}} */
2092 
2093 
2094 /* {{{ proto int sybase_affected_rows([resource link_id])
2095    Get number of affected rows in last query */
2096 PHP_FUNCTION(sybase_affected_rows)
2097 {
2098         zval *sybase_link_index = NULL;
2099         sybase_link *sybase_ptr;
2100         int id;
2101 
2102         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|r", &sybase_link_index) == FAILURE) {
2103                 return;
2104         }
2105 
2106         if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
2107                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Sybase:  No connection");
2108                 RETURN_FALSE;
2109         }
2110 
2111         ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);
2112 
2113         Z_LVAL_P(return_value) = sybase_ptr->affected_rows;
2114         Z_TYPE_P(return_value) = IS_LONG;
2115 }
2116 /* }}} */
2117 
2118 
2119 PHP_MINFO_FUNCTION(sybase)
2120 {
2121         char buf[32];
2122 
2123         php_info_print_table_start();
2124         php_info_print_table_header(2, "Sybase_CT Support", "enabled" );
2125         snprintf(buf, sizeof(buf), "%ld", SybCtG(num_persistent));
2126         php_info_print_table_row(2, "Active Persistent Links", buf);
2127         snprintf(buf, sizeof(buf), "%ld", SybCtG(num_links));
2128         php_info_print_table_row(2, "Active Links", buf);
2129         snprintf(buf, sizeof(buf), "%ld", SybCtG(min_server_severity));
2130         php_info_print_table_row(2, "Min server severity", buf);
2131         snprintf(buf, sizeof(buf), "%ld", SybCtG(min_client_severity));
2132         php_info_print_table_row(2, "Min client severity", buf);        
2133         php_info_print_table_row(2, "Application Name", SybCtG(appname));
2134         snprintf(buf, sizeof(buf), "%ld", SybCtG(deadlock_retry_count));
2135         php_info_print_table_row(2, "Deadlock retry count", buf);
2136         php_info_print_table_end();
2137 
2138         DISPLAY_INI_ENTRIES();
2139 }
2140 
2141 
2142 /* {{{ proto void sybase_min_client_severity(int severity)
2143    Sets minimum client severity */
2144 PHP_FUNCTION(sybase_min_client_severity)
2145 {
2146         long severity;
2147 
2148         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &severity) == FAILURE) {
2149                 return;
2150         }
2151         
2152         SybCtG(min_client_severity) = severity;
2153 }
2154 /* }}} */
2155 
2156 
2157 /* {{{ proto void sybase_min_server_severity(int severity)
2158    Sets minimum server severity */
2159 PHP_FUNCTION(sybase_min_server_severity)
2160 {
2161         long severity;
2162 
2163         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &severity) == FAILURE) {
2164                 return;
2165         }
2166         
2167         SybCtG(min_server_severity) = severity;
2168 }
2169 /* }}} */
2170 
2171 /* {{{ proto void sybase_deadlock_retry_count(int retry_count)
2172    Sets deadlock retry count */
2173 PHP_FUNCTION(sybase_deadlock_retry_count)
2174 {
2175         long retry_count;
2176 
2177         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &retry_count) == FAILURE) {
2178                 return;
2179         }
2180         
2181         SybCtG(deadlock_retry_count) = retry_count;
2182 }
2183 /* }}} */
2184 
2185 
2186 /* {{{ proto bool sybase_set_message_handler(mixed error_func [, resource connection])
2187    Set the error handler, to be called when a server message is raised. 
2188    If error_func is NULL the handler will be deleted */
2189 PHP_FUNCTION(sybase_set_message_handler)
2190 {
2191         zend_fcall_info fci = empty_fcall_info;
2192         zend_fcall_info_cache cache = empty_fcall_info_cache;
2193         zval *sybase_link_index= NULL;
2194         sybase_link *sybase_ptr;
2195         zval **callback;
2196         int id;
2197 
2198         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "f!|r", &fci, &cache, &sybase_link_index) == FAILURE) {
2199                 return;
2200         }
2201 
2202         if (php_sybase_connection_id(sybase_link_index, &id TSRMLS_CC) == FAILURE) {
2203 
2204                 /* Doesn't matter if we're not connected yet, use default */
2205                 callback= &SybCtG(callback_name);
2206         } else if (-1 == id) {
2207 
2208                 /* Connection-based message handler */
2209                 ZEND_FETCH_RESOURCE2(sybase_ptr, sybase_link *, &sybase_link_index, id, "Sybase-Link", le_link, le_plink);
2210                 callback= &sybase_ptr->callback_name;
2211         } else {
2212 
2213                 /* Default message handler */
2214                 callback= &SybCtG(callback_name);
2215         }
2216 
2217         /* Clean old callback */
2218         if (*callback) {
2219                 zval_ptr_dtor(callback);
2220                 *callback = NULL;
2221         }
2222 
2223         if (ZEND_FCI_INITIALIZED(fci)) {
2224                 ALLOC_ZVAL(*callback);
2225                 **callback = *fci.function_name;
2226                 INIT_PZVAL(*callback);
2227                 zval_copy_ctor(*callback);
2228         } else {
2229                 callback= NULL;
2230         }
2231 
2232         RETURN_TRUE;
2233 }
2234 /* }}} */
2235 
2236 
2237 #endif
2238 
2239 /*
2240  * Local variables:
2241  * tab-width: 4
2242  * c-basic-offset: 4
2243  * End:
2244  */

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