PostgreSQL Source Code  git master
execute.c
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1 /* src/interfaces/ecpg/ecpglib/execute.c */
2 
3 /*
4  * The aim is to get a simpler interface to the database routines.
5  * All the tedious messing around with tuples is supposed to be hidden
6  * by this function.
7  */
8 /* Author: Linus Tolke
9  (actually most if the code is "borrowed" from the distribution and just
10  slightly modified)
11  */
12 
13 /* Taken over as part of PostgreSQL by Michael Meskes <meskes@postgresql.org>
14  on Feb. 5th, 1998 */
15 
16 #define POSTGRES_ECPG_INTERNAL
17 #include "postgres_fe.h"
18 
19 #include <math.h>
20 
21 #include "catalog/pg_type_d.h"
22 #include "ecpgerrno.h"
23 #include "ecpglib.h"
24 #include "ecpglib_extern.h"
25 #include "ecpgtype.h"
26 #include "pgtypes_date.h"
27 #include "pgtypes_interval.h"
28 #include "pgtypes_numeric.h"
29 #include "pgtypes_timestamp.h"
30 #include "sql3types.h"
31 #include "sqlca.h"
32 #include "sqlda-compat.h"
33 #include "sqlda-native.h"
34 
35 /*
36  * This function returns a newly malloced string that has ' and \
37  * escaped.
38  */
39 static char *
40 quote_postgres(char *arg, bool quote, int lineno)
41 {
42  char *res;
43  size_t length;
44  size_t escaped_len;
45  size_t buffer_len;
46 
47  /*
48  * if quote is false we just need to store things in a descriptor they
49  * will be quoted once they are inserted in a statement
50  */
51  if (!quote)
52  return arg;
53  else
54  {
55  length = strlen(arg);
56  buffer_len = 2 * length + 1;
57  res = (char *) ecpg_alloc(buffer_len + 3, lineno);
58  if (!res)
59  return res;
60  escaped_len = PQescapeString(res + 1, arg, buffer_len);
61  if (length == escaped_len)
62  {
63  res[0] = res[escaped_len + 1] = '\'';
64  res[escaped_len + 2] = '\0';
65  }
66  else
67  {
68  /*
69  * We don't know if the target database is using
70  * standard_conforming_strings, so we always use E'' strings.
71  */
72  memmove(res + 2, res + 1, escaped_len);
73  res[0] = ESCAPE_STRING_SYNTAX;
74  res[1] = res[escaped_len + 2] = '\'';
75  res[escaped_len + 3] = '\0';
76  }
77  ecpg_free(arg);
78  return res;
79  }
80 }
81 
82 static void
83 free_variable(struct variable *var)
84 {
85  struct variable *var_next;
86 
87  while (var)
88  {
89  var_next = var->next;
90  ecpg_free(var);
91  var = var_next;
92  }
93 }
94 
95 static void
96 free_statement(struct statement *stmt)
97 {
98  if (stmt == NULL)
99  return;
100  free_variable(stmt->inlist);
101  free_variable(stmt->outlist);
102  ecpg_free(stmt->command);
103  ecpg_free(stmt->name);
104 #ifdef HAVE_USELOCALE
105  if (stmt->clocale)
106  freelocale(stmt->clocale);
107 #else
108  ecpg_free(stmt->oldlocale);
109 #endif
110  ecpg_free(stmt);
111 }
112 
113 static int
114 next_insert(char *text, int pos, bool questionmarks, bool std_strings)
115 {
116  bool string = false;
117  int p = pos;
118 
119  for (; text[p] != '\0'; p++)
120  {
121  if (string && !std_strings && text[p] == '\\') /* escape character */
122  p++;
123  else if (text[p] == '\'')
124  string = string ? false : true;
125  else if (!string)
126  {
127  if (text[p] == '$' && isdigit((unsigned char) text[p + 1]))
128  {
129  /* this can be either a dollar quote or a variable */
130  int i;
131 
132  for (i = p + 1; isdigit((unsigned char) text[i]); i++)
133  /* empty loop body */ ;
134  if (!isalpha((unsigned char) text[i]) &&
135  isascii((unsigned char) text[i]) &&text[i] != '_')
136  /* not dollar delimited quote */
137  return p;
138  }
139  else if (questionmarks && text[p] == '?')
140  {
141  /* also allow old style placeholders */
142  return p;
143  }
144  }
145  }
146 
147  return -1;
148 }
149 
150 static bool
151 ecpg_type_infocache_push(struct ECPGtype_information_cache **cache, int oid, enum ARRAY_TYPE isarray, int lineno)
152 {
153  struct ECPGtype_information_cache *new_entry
154  = (struct ECPGtype_information_cache *) ecpg_alloc(sizeof(struct ECPGtype_information_cache), lineno);
155 
156  if (new_entry == NULL)
157  return false;
158 
159  new_entry->oid = oid;
160  new_entry->isarray = isarray;
161  new_entry->next = *cache;
162  *cache = new_entry;
163  return true;
164 }
165 
166 static enum ARRAY_TYPE
167 ecpg_is_type_an_array(int type, const struct statement *stmt, const struct variable *var)
168 {
169  char *array_query;
170  enum ARRAY_TYPE isarray = ECPG_ARRAY_NOT_SET;
171  PGresult *query;
172  struct ECPGtype_information_cache *cache_entry;
173 
174  if ((stmt->connection->cache_head) == NULL)
175  {
176  /*
177  * Text like types are not an array for ecpg, but postgres counts them
178  * as an array. This define reminds you to not 'correct' these values.
179  */
180 #define not_an_array_in_ecpg ECPG_ARRAY_NONE
181 
182  /* populate cache with well known types to speed things up */
183  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), BOOLOID, ECPG_ARRAY_NONE, stmt->lineno))
184  return ECPG_ARRAY_ERROR;
185  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), BYTEAOID, ECPG_ARRAY_NONE, stmt->lineno))
186  return ECPG_ARRAY_ERROR;
187  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), CHAROID, ECPG_ARRAY_NONE, stmt->lineno))
188  return ECPG_ARRAY_ERROR;
189  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), NAMEOID, not_an_array_in_ecpg, stmt->lineno))
190  return ECPG_ARRAY_ERROR;
191  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INT8OID, ECPG_ARRAY_NONE, stmt->lineno))
192  return ECPG_ARRAY_ERROR;
193  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INT2OID, ECPG_ARRAY_NONE, stmt->lineno))
194  return ECPG_ARRAY_ERROR;
195  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INT2VECTOROID, ECPG_ARRAY_VECTOR, stmt->lineno))
196  return ECPG_ARRAY_ERROR;
197  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INT4OID, ECPG_ARRAY_NONE, stmt->lineno))
198  return ECPG_ARRAY_ERROR;
199  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), REGPROCOID, ECPG_ARRAY_NONE, stmt->lineno))
200  return ECPG_ARRAY_ERROR;
201  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TEXTOID, ECPG_ARRAY_NONE, stmt->lineno))
202  return ECPG_ARRAY_ERROR;
203  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), OIDOID, ECPG_ARRAY_NONE, stmt->lineno))
204  return ECPG_ARRAY_ERROR;
205  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TIDOID, ECPG_ARRAY_NONE, stmt->lineno))
206  return ECPG_ARRAY_ERROR;
207  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), XIDOID, ECPG_ARRAY_NONE, stmt->lineno))
208  return ECPG_ARRAY_ERROR;
209  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), CIDOID, ECPG_ARRAY_NONE, stmt->lineno))
210  return ECPG_ARRAY_ERROR;
211  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), OIDVECTOROID, ECPG_ARRAY_VECTOR, stmt->lineno))
212  return ECPG_ARRAY_ERROR;
213  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), POINTOID, ECPG_ARRAY_VECTOR, stmt->lineno))
214  return ECPG_ARRAY_ERROR;
215  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), LSEGOID, ECPG_ARRAY_VECTOR, stmt->lineno))
216  return ECPG_ARRAY_ERROR;
217  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), PATHOID, ECPG_ARRAY_NONE, stmt->lineno))
218  return ECPG_ARRAY_ERROR;
219  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), BOXOID, ECPG_ARRAY_VECTOR, stmt->lineno))
220  return ECPG_ARRAY_ERROR;
221  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), POLYGONOID, ECPG_ARRAY_NONE, stmt->lineno))
222  return ECPG_ARRAY_ERROR;
223  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), LINEOID, ECPG_ARRAY_VECTOR, stmt->lineno))
224  return ECPG_ARRAY_ERROR;
225  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), FLOAT4OID, ECPG_ARRAY_NONE, stmt->lineno))
226  return ECPG_ARRAY_ERROR;
227  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), FLOAT8OID, ECPG_ARRAY_NONE, stmt->lineno))
228  return ECPG_ARRAY_ERROR;
229  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), UNKNOWNOID, ECPG_ARRAY_NONE, stmt->lineno))
230  return ECPG_ARRAY_ERROR;
231  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), CIRCLEOID, ECPG_ARRAY_NONE, stmt->lineno))
232  return ECPG_ARRAY_ERROR;
233  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), CASHOID, ECPG_ARRAY_NONE, stmt->lineno))
234  return ECPG_ARRAY_ERROR;
235  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INETOID, ECPG_ARRAY_NONE, stmt->lineno))
236  return ECPG_ARRAY_ERROR;
237  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), CIDROID, ECPG_ARRAY_NONE, stmt->lineno))
238  return ECPG_ARRAY_ERROR;
239  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), BPCHAROID, ECPG_ARRAY_NONE, stmt->lineno))
240  return ECPG_ARRAY_ERROR;
241  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), VARCHAROID, ECPG_ARRAY_NONE, stmt->lineno))
242  return ECPG_ARRAY_ERROR;
243  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), DATEOID, ECPG_ARRAY_NONE, stmt->lineno))
244  return ECPG_ARRAY_ERROR;
245  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TIMEOID, ECPG_ARRAY_NONE, stmt->lineno))
246  return ECPG_ARRAY_ERROR;
247  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TIMESTAMPOID, ECPG_ARRAY_NONE, stmt->lineno))
248  return ECPG_ARRAY_ERROR;
249  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TIMESTAMPTZOID, ECPG_ARRAY_NONE, stmt->lineno))
250  return ECPG_ARRAY_ERROR;
251  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INTERVALOID, ECPG_ARRAY_NONE, stmt->lineno))
252  return ECPG_ARRAY_ERROR;
253  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TIMETZOID, ECPG_ARRAY_NONE, stmt->lineno))
254  return ECPG_ARRAY_ERROR;
255  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), BITOID, ECPG_ARRAY_NONE, stmt->lineno))
256  return ECPG_ARRAY_ERROR;
257  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), VARBITOID, ECPG_ARRAY_NONE, stmt->lineno))
258  return ECPG_ARRAY_ERROR;
259  if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), NUMERICOID, ECPG_ARRAY_NONE, stmt->lineno))
260  return ECPG_ARRAY_ERROR;
261  }
262 
263  for (cache_entry = (stmt->connection->cache_head); cache_entry != NULL; cache_entry = cache_entry->next)
264  {
265  if (cache_entry->oid == type)
266  return cache_entry->isarray;
267  }
268 
269  array_query = (char *) ecpg_alloc(strlen("select typlen from pg_type where oid= and typelem<>0") + 11, stmt->lineno);
270  if (array_query == NULL)
271  return ECPG_ARRAY_ERROR;
272 
273  sprintf(array_query, "select typlen from pg_type where oid=%d and typelem<>0", type);
274  query = PQexec(stmt->connection->connection, array_query);
275  ecpg_free(array_query);
276  if (!ecpg_check_PQresult(query, stmt->lineno, stmt->connection->connection, stmt->compat))
277  return ECPG_ARRAY_ERROR;
278  else if (PQresultStatus(query) == PGRES_TUPLES_OK)
279  {
280  if (PQntuples(query) == 0)
281  isarray = ECPG_ARRAY_NONE;
282  else
283  {
284  isarray = (atol((char *) PQgetvalue(query, 0, 0)) == -1) ? ECPG_ARRAY_ARRAY : ECPG_ARRAY_VECTOR;
285  if (ecpg_dynamic_type(type) == SQL3_CHARACTER ||
286  ecpg_dynamic_type(type) == SQL3_CHARACTER_VARYING)
287  {
288  /*
289  * arrays of character strings are not yet implemented
290  */
291  isarray = ECPG_ARRAY_NONE;
292  }
293  }
294  PQclear(query);
295  }
296  else
297  return ECPG_ARRAY_ERROR;
298 
299  ecpg_type_infocache_push(&(stmt->connection->cache_head), type, isarray, stmt->lineno);
300  ecpg_log("ecpg_is_type_an_array on line %d: type (%d); C (%d); array (%s)\n", stmt->lineno, type, var->type, ECPG_IS_ARRAY(isarray) ? "yes" : "no");
301  return isarray;
302 }
303 
304 
305 bool
306 ecpg_store_result(const PGresult *results, int act_field,
307  const struct statement *stmt, struct variable *var)
308 {
309  enum ARRAY_TYPE isarray;
310  int act_tuple,
311  ntuples = PQntuples(results);
312  bool status = true;
313 
314  if ((isarray = ecpg_is_type_an_array(PQftype(results, act_field), stmt, var)) == ECPG_ARRAY_ERROR)
315  {
316  ecpg_raise(stmt->lineno, ECPG_OUT_OF_MEMORY, ECPG_SQLSTATE_ECPG_OUT_OF_MEMORY, NULL);
317  return false;
318  }
319 
320  if (isarray == ECPG_ARRAY_NONE)
321  {
322  /*
323  * if we don't have enough space, we cannot read all tuples
324  */
325  if ((var->arrsize > 0 && ntuples > var->arrsize) || (var->ind_arrsize > 0 && ntuples > var->ind_arrsize))
326  {
327  ecpg_log("ecpg_store_result on line %d: incorrect number of matches; %d don't fit into array of %ld\n",
328  stmt->lineno, ntuples, var->arrsize);
329  ecpg_raise(stmt->lineno, INFORMIX_MODE(stmt->compat) ? ECPG_INFORMIX_SUBSELECT_NOT_ONE : ECPG_TOO_MANY_MATCHES, ECPG_SQLSTATE_CARDINALITY_VIOLATION, NULL);
330  return false;
331  }
332  }
333  else
334  {
335  /*
336  * since we read an array, the variable has to be an array too
337  */
338  if (var->arrsize == 0)
339  {
340  ecpg_raise(stmt->lineno, ECPG_NO_ARRAY, ECPG_SQLSTATE_DATATYPE_MISMATCH, NULL);
341  return false;
342  }
343  }
344 
345  /*
346  * allocate memory for NULL pointers
347  */
348  if ((var->arrsize == 0 || var->varcharsize == 0) && var->value == NULL)
349  {
350  int len = 0;
351 
352  if (!PQfformat(results, act_field))
353  {
354  switch (var->type)
355  {
356  case ECPGt_char:
357  case ECPGt_unsigned_char:
358  case ECPGt_string:
359  if (!var->varcharsize && !var->arrsize)
360  {
361  /* special mode for handling char**foo=0 */
362  for (act_tuple = 0; act_tuple < ntuples; act_tuple++)
363  len += strlen(PQgetvalue(results, act_tuple, act_field)) + 1;
364  len *= var->offset; /* should be 1, but YMNK */
365  len += (ntuples + 1) * sizeof(char *);
366  }
367  else
368  {
369  var->varcharsize = 0;
370  /* check strlen for each tuple */
371  for (act_tuple = 0; act_tuple < ntuples; act_tuple++)
372  {
373  int len = strlen(PQgetvalue(results, act_tuple, act_field)) + 1;
374 
375  if (len > var->varcharsize)
376  var->varcharsize = len;
377  }
378  var->offset *= var->varcharsize;
379  len = var->offset * ntuples;
380  }
381  break;
382  case ECPGt_varchar:
383  len = ntuples * (var->varcharsize + sizeof(int));
384  break;
385  default:
386  len = var->offset * ntuples;
387  break;
388  }
389  }
390  else
391  {
392  for (act_tuple = 0; act_tuple < ntuples; act_tuple++)
393  len += PQgetlength(results, act_tuple, act_field);
394  }
395 
396  ecpg_log("ecpg_store_result on line %d: allocating memory for %d tuples\n", stmt->lineno, ntuples);
397  var->value = (char *) ecpg_auto_alloc(len, stmt->lineno);
398  if (!var->value)
399  return false;
400  *((char **) var->pointer) = var->value;
401  }
402 
403  /* allocate indicator variable if needed */
404  if ((var->ind_arrsize == 0 || var->ind_varcharsize == 0) && var->ind_value == NULL && var->ind_pointer != NULL)
405  {
406  int len = var->ind_offset * ntuples;
407 
408  var->ind_value = (char *) ecpg_auto_alloc(len, stmt->lineno);
409  if (!var->ind_value)
410  return false;
411  *((char **) var->ind_pointer) = var->ind_value;
412  }
413 
414  /* fill the variable with the tuple(s) */
415  if (!var->varcharsize && !var->arrsize &&
416  (var->type == ECPGt_char || var->type == ECPGt_unsigned_char || var->type == ECPGt_string))
417  {
418  /* special mode for handling char**foo=0 */
419 
420  /* filling the array of (char*)s */
421  char **current_string = (char **) var->value;
422 
423  /* storing the data (after the last array element) */
424  char *current_data_location = (char *) &current_string[ntuples + 1];
425 
426  for (act_tuple = 0; act_tuple < ntuples && status; act_tuple++)
427  {
428  int len = strlen(PQgetvalue(results, act_tuple, act_field)) + 1;
429 
430  if (!ecpg_get_data(results, act_tuple, act_field, stmt->lineno,
431  var->type, var->ind_type, current_data_location,
432  var->ind_value, len, 0, var->ind_offset, isarray, stmt->compat, stmt->force_indicator))
433  status = false;
434  else
435  {
436  *current_string = current_data_location;
437  current_data_location += len;
438  current_string++;
439  }
440  }
441 
442  /* terminate the list */
443  *current_string = NULL;
444  }
445  else
446  {
447  for (act_tuple = 0; act_tuple < ntuples && status; act_tuple++)
448  {
449  if (!ecpg_get_data(results, act_tuple, act_field, stmt->lineno,
450  var->type, var->ind_type, var->value,
451  var->ind_value, var->varcharsize, var->offset, var->ind_offset, isarray, stmt->compat, stmt->force_indicator))
452  status = false;
453  }
454  }
455  return status;
456 }
457 
458 static void
459 sprintf_double_value(char *ptr, double value, const char *delim)
460 {
461  if (isnan(value))
462  sprintf(ptr, "%s%s", "NaN", delim);
463  else if (isinf(value))
464  {
465  if (value < 0)
466  sprintf(ptr, "%s%s", "-Infinity", delim);
467  else
468  sprintf(ptr, "%s%s", "Infinity", delim);
469  }
470  else
471  sprintf(ptr, "%.15g%s", value, delim);
472 }
473 
474 static void
475 sprintf_float_value(char *ptr, float value, const char *delim)
476 {
477  if (isnan(value))
478  sprintf(ptr, "%s%s", "NaN", delim);
479  else if (isinf(value))
480  {
481  if (value < 0)
482  sprintf(ptr, "%s%s", "-Infinity", delim);
483  else
484  sprintf(ptr, "%s%s", "Infinity", delim);
485  }
486  else
487  sprintf(ptr, "%.15g%s", value, delim);
488 }
489 
490 static char *
491 convert_bytea_to_string(char *from_data, int from_len, int lineno)
492 {
493  char *to_data;
494  int to_len = ecpg_hex_enc_len(from_len) + 4 + 1; /* backslash + 'x' +
495  * quote + quote */
496 
497  to_data = ecpg_alloc(to_len, lineno);
498  if (!to_data)
499  return NULL;
500 
501  strcpy(to_data, "'\\x");
502  ecpg_hex_encode(from_data, from_len, to_data + 3);
503  strcpy(to_data + 3 + ecpg_hex_enc_len(from_len), "\'");
504 
505  return to_data;
506 }
507 
508 bool
509 ecpg_store_input(const int lineno, const bool force_indicator, const struct variable *var,
510  char **tobeinserted_p, bool quote)
511 {
512  char *mallocedval = NULL;
513  char *newcopy = NULL;
514 
515  /*
516  * arrays are not possible unless the column is an array, too FIXME: we do
517  * not know if the column is an array here array input to singleton column
518  * will result in a runtime error
519  */
520 
521  /*
522  * Some special treatment is needed for records since we want their
523  * contents to arrive in a comma-separated list on insert (I think).
524  */
525 
526  *tobeinserted_p = "";
527 
528  /* check for null value and set input buffer accordingly */
529  switch (var->ind_type)
530  {
531  case ECPGt_short:
532  case ECPGt_unsigned_short:
533  if (*(short *) var->ind_value < 0)
534  *tobeinserted_p = NULL;
535  break;
536  case ECPGt_int:
537  case ECPGt_unsigned_int:
538  if (*(int *) var->ind_value < 0)
539  *tobeinserted_p = NULL;
540  break;
541  case ECPGt_long:
542  case ECPGt_unsigned_long:
543  if (*(long *) var->ind_value < 0L)
544  *tobeinserted_p = NULL;
545  break;
546  case ECPGt_long_long:
547  case ECPGt_unsigned_long_long:
548  if (*(long long int *) var->ind_value < (long long) 0)
549  *tobeinserted_p = NULL;
550  break;
551  case ECPGt_NO_INDICATOR:
552  if (force_indicator == false)
553  {
554  if (ECPGis_noind_null(var->type, var->value))
555  *tobeinserted_p = NULL;
556  }
557  break;
558  default:
559  break;
560  }
561  if (*tobeinserted_p != NULL)
562  {
563  int asize = var->arrsize ? var->arrsize : 1;
564 
565  switch (var->type)
566  {
567  int element;
568 
569  case ECPGt_short:
570  if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
571  return false;
572 
573  if (asize > 1)
574  {
575  strcpy(mallocedval, "{");
576 
577  for (element = 0; element < asize; element++)
578  sprintf(mallocedval + strlen(mallocedval), "%hd,", ((short *) var->value)[element]);
579 
580  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
581  }
582  else
583  sprintf(mallocedval, "%hd", *((short *) var->value));
584 
585  *tobeinserted_p = mallocedval;
586  break;
587 
588  case ECPGt_int:
589  if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
590  return false;
591 
592  if (asize > 1)
593  {
594  strcpy(mallocedval, "{");
595 
596  for (element = 0; element < asize; element++)
597  sprintf(mallocedval + strlen(mallocedval), "%d,", ((int *) var->value)[element]);
598 
599  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
600  }
601  else
602  sprintf(mallocedval, "%d", *((int *) var->value));
603 
604  *tobeinserted_p = mallocedval;
605  break;
606 
607  case ECPGt_unsigned_short:
608  if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
609  return false;
610 
611  if (asize > 1)
612  {
613  strcpy(mallocedval, "{");
614 
615  for (element = 0; element < asize; element++)
616  sprintf(mallocedval + strlen(mallocedval), "%hu,", ((unsigned short *) var->value)[element]);
617 
618  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
619  }
620  else
621  sprintf(mallocedval, "%hu", *((unsigned short *) var->value));
622 
623  *tobeinserted_p = mallocedval;
624  break;
625 
626  case ECPGt_unsigned_int:
627  if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
628  return false;
629 
630  if (asize > 1)
631  {
632  strcpy(mallocedval, "{");
633 
634  for (element = 0; element < asize; element++)
635  sprintf(mallocedval + strlen(mallocedval), "%u,", ((unsigned int *) var->value)[element]);
636 
637  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
638  }
639  else
640  sprintf(mallocedval, "%u", *((unsigned int *) var->value));
641 
642  *tobeinserted_p = mallocedval;
643  break;
644 
645  case ECPGt_long:
646  if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
647  return false;
648 
649  if (asize > 1)
650  {
651  strcpy(mallocedval, "{");
652 
653  for (element = 0; element < asize; element++)
654  sprintf(mallocedval + strlen(mallocedval), "%ld,", ((long *) var->value)[element]);
655 
656  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
657  }
658  else
659  sprintf(mallocedval, "%ld", *((long *) var->value));
660 
661  *tobeinserted_p = mallocedval;
662  break;
663 
664  case ECPGt_unsigned_long:
665  if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
666  return false;
667 
668  if (asize > 1)
669  {
670  strcpy(mallocedval, "{");
671 
672  for (element = 0; element < asize; element++)
673  sprintf(mallocedval + strlen(mallocedval), "%lu,", ((unsigned long *) var->value)[element]);
674 
675  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
676  }
677  else
678  sprintf(mallocedval, "%lu", *((unsigned long *) var->value));
679 
680  *tobeinserted_p = mallocedval;
681  break;
682 
683  case ECPGt_long_long:
684  if (!(mallocedval = ecpg_alloc(asize * 30, lineno)))
685  return false;
686 
687  if (asize > 1)
688  {
689  strcpy(mallocedval, "{");
690 
691  for (element = 0; element < asize; element++)
692  sprintf(mallocedval + strlen(mallocedval), "%lld,", ((long long int *) var->value)[element]);
693 
694  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
695  }
696  else
697  sprintf(mallocedval, "%lld", *((long long int *) var->value));
698 
699  *tobeinserted_p = mallocedval;
700  break;
701 
702  case ECPGt_unsigned_long_long:
703  if (!(mallocedval = ecpg_alloc(asize * 30, lineno)))
704  return false;
705 
706  if (asize > 1)
707  {
708  strcpy(mallocedval, "{");
709 
710  for (element = 0; element < asize; element++)
711  sprintf(mallocedval + strlen(mallocedval), "%llu,", ((unsigned long long int *) var->value)[element]);
712 
713  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
714  }
715  else
716  sprintf(mallocedval, "%llu", *((unsigned long long int *) var->value));
717 
718  *tobeinserted_p = mallocedval;
719  break;
720 
721  case ECPGt_float:
722  if (!(mallocedval = ecpg_alloc(asize * 25, lineno)))
723  return false;
724 
725  if (asize > 1)
726  {
727  strcpy(mallocedval, "{");
728 
729  for (element = 0; element < asize; element++)
730  sprintf_float_value(mallocedval + strlen(mallocedval), ((float *) var->value)[element], ",");
731 
732  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
733  }
734  else
735  sprintf_float_value(mallocedval, *((float *) var->value), "");
736 
737  *tobeinserted_p = mallocedval;
738  break;
739 
740  case ECPGt_double:
741  if (!(mallocedval = ecpg_alloc(asize * 25, lineno)))
742  return false;
743 
744  if (asize > 1)
745  {
746  strcpy(mallocedval, "{");
747 
748  for (element = 0; element < asize; element++)
749  sprintf_double_value(mallocedval + strlen(mallocedval), ((double *) var->value)[element], ",");
750 
751  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
752  }
753  else
754  sprintf_double_value(mallocedval, *((double *) var->value), "");
755 
756  *tobeinserted_p = mallocedval;
757  break;
758 
759  case ECPGt_bool:
760  if (!(mallocedval = ecpg_alloc(var->arrsize + sizeof("{}"), lineno)))
761  return false;
762 
763  if (var->arrsize > 1)
764  {
765  strcpy(mallocedval, "{");
766 
767  for (element = 0; element < asize; element++)
768  sprintf(mallocedval + strlen(mallocedval), "%c,", (((bool *) var->value)[element]) ? 't' : 'f');
769 
770  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
771  }
772  else
773  {
774  if (var->offset == sizeof(char))
775  sprintf(mallocedval, "%c", (*((char *) var->value)) ? 't' : 'f');
776  else if (var->offset == sizeof(int))
777  sprintf(mallocedval, "%c", (*((int *) var->value)) ? 't' : 'f');
778  else
779  ecpg_raise(lineno, ECPG_CONVERT_BOOL, ECPG_SQLSTATE_DATATYPE_MISMATCH, NULL);
780  }
781 
782  *tobeinserted_p = mallocedval;
783  break;
784 
785  case ECPGt_char:
786  case ECPGt_unsigned_char:
787  case ECPGt_string:
788  {
789  /* set slen to string length if type is char * */
790  int slen = (var->varcharsize == 0) ? strlen((char *) var->value) : (unsigned int) var->varcharsize;
791 
792  if (!(newcopy = ecpg_alloc(slen + 1, lineno)))
793  return false;
794 
795  strncpy(newcopy, (char *) var->value, slen);
796  newcopy[slen] = '\0';
797 
798  mallocedval = quote_postgres(newcopy, quote, lineno);
799  if (!mallocedval)
800  {
801  ecpg_free(newcopy);
802  return false;
803  }
804 
805  *tobeinserted_p = mallocedval;
806  }
807  break;
808  case ECPGt_const:
809  case ECPGt_char_variable:
810  {
811  int slen = strlen((char *) var->value);
812 
813  if (!(mallocedval = ecpg_alloc(slen + 1, lineno)))
814  return false;
815 
816  strncpy(mallocedval, (char *) var->value, slen);
817  mallocedval[slen] = '\0';
818 
819  *tobeinserted_p = mallocedval;
820  }
821  break;
822 
823  case ECPGt_bytea:
824  {
825  struct ECPGgeneric_varchar *variable =
826  (struct ECPGgeneric_varchar *) (var->value);
827 
828  if (!(mallocedval = (char *) ecpg_alloc(variable->len, lineno)))
829  return false;
830 
831  memcpy(mallocedval, variable->arr, variable->len);
832  *tobeinserted_p = mallocedval;
833  }
834  break;
835 
836  case ECPGt_varchar:
837  {
838  struct ECPGgeneric_varchar *variable =
839  (struct ECPGgeneric_varchar *) (var->value);
840 
841  if (!(newcopy = (char *) ecpg_alloc(variable->len + 1, lineno)))
842  return false;
843 
844  strncpy(newcopy, variable->arr, variable->len);
845  newcopy[variable->len] = '\0';
846 
847  mallocedval = quote_postgres(newcopy, quote, lineno);
848  if (!mallocedval)
849  {
850  ecpg_free(newcopy);
851  return false;
852  }
853 
854  *tobeinserted_p = mallocedval;
855  }
856  break;
857 
858  case ECPGt_decimal:
859  case ECPGt_numeric:
860  {
861  char *str = NULL;
862  int slen;
863  numeric *nval;
864 
865  if (var->arrsize > 1)
866  mallocedval = ecpg_strdup("{", lineno);
867  else
868  mallocedval = ecpg_strdup("", lineno);
869 
870  if (!mallocedval)
871  return false;
872 
873  for (element = 0; element < asize; element++)
874  {
875  int result;
876 
877  nval = PGTYPESnumeric_new();
878  if (!nval)
879  {
880  ecpg_free(mallocedval);
881  return false;
882  }
883 
884  if (var->type == ECPGt_numeric)
885  result = PGTYPESnumeric_copy(&(((numeric *) (var->value))[element]), nval);
886  else
887  result = PGTYPESnumeric_from_decimal(&(((decimal *) (var->value))[element]), nval);
888 
889  if (result != 0)
890  {
891  PGTYPESnumeric_free(nval);
892  ecpg_free(mallocedval);
893  return false;
894  }
895 
896  str = PGTYPESnumeric_to_asc(nval, nval->dscale);
897  slen = strlen(str);
898  PGTYPESnumeric_free(nval);
899 
900  if (!(newcopy = ecpg_realloc(mallocedval, strlen(mallocedval) + slen + 2, lineno)))
901  {
902  ecpg_free(mallocedval);
903  ecpg_free(str);
904  return false;
905  }
906  mallocedval = newcopy;
907 
908  /* also copy trailing '\0' */
909  memcpy(mallocedval + strlen(mallocedval), str, slen + 1);
910  if (var->arrsize > 1)
911  strcpy(mallocedval + strlen(mallocedval), ",");
912 
913  ecpg_free(str);
914  }
915 
916  if (var->arrsize > 1)
917  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
918 
919  *tobeinserted_p = mallocedval;
920  }
921  break;
922 
923  case ECPGt_interval:
924  {
925  char *str = NULL;
926  int slen;
927 
928  if (var->arrsize > 1)
929  mallocedval = ecpg_strdup("{", lineno);
930  else
931  mallocedval = ecpg_strdup("", lineno);
932 
933  if (!mallocedval)
934  return false;
935 
936  for (element = 0; element < asize; element++)
937  {
938  str = quote_postgres(PGTYPESinterval_to_asc(&(((interval *) (var->value))[element])), quote, lineno);
939  if (!str)
940  {
941  ecpg_free(mallocedval);
942  return false;
943  }
944 
945  slen = strlen(str);
946 
947  if (!(newcopy = ecpg_realloc(mallocedval, strlen(mallocedval) + slen + 2, lineno)))
948  {
949  ecpg_free(mallocedval);
950  ecpg_free(str);
951  return false;
952  }
953  mallocedval = newcopy;
954 
955  /* also copy trailing '\0' */
956  memcpy(mallocedval + strlen(mallocedval), str, slen + 1);
957  if (var->arrsize > 1)
958  strcpy(mallocedval + strlen(mallocedval), ",");
959 
960  ecpg_free(str);
961  }
962 
963  if (var->arrsize > 1)
964  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
965 
966  *tobeinserted_p = mallocedval;
967  }
968  break;
969 
970  case ECPGt_date:
971  {
972  char *str = NULL;
973  int slen;
974 
975  if (var->arrsize > 1)
976  mallocedval = ecpg_strdup("{", lineno);
977  else
978  mallocedval = ecpg_strdup("", lineno);
979 
980  if (!mallocedval)
981  return false;
982 
983  for (element = 0; element < asize; element++)
984  {
985  str = quote_postgres(PGTYPESdate_to_asc(((date *) (var->value))[element]), quote, lineno);
986  if (!str)
987  {
988  ecpg_free(mallocedval);
989  return false;
990  }
991 
992  slen = strlen(str);
993 
994  if (!(newcopy = ecpg_realloc(mallocedval, strlen(mallocedval) + slen + 2, lineno)))
995  {
996  ecpg_free(mallocedval);
997  ecpg_free(str);
998  return false;
999  }
1000  mallocedval = newcopy;
1001 
1002  /* also copy trailing '\0' */
1003  memcpy(mallocedval + strlen(mallocedval), str, slen + 1);
1004  if (var->arrsize > 1)
1005  strcpy(mallocedval + strlen(mallocedval), ",");
1006 
1007  ecpg_free(str);
1008  }
1009 
1010  if (var->arrsize > 1)
1011  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
1012 
1013  *tobeinserted_p = mallocedval;
1014  }
1015  break;
1016 
1017  case ECPGt_timestamp:
1018  {
1019  char *str = NULL;
1020  int slen;
1021 
1022  if (var->arrsize > 1)
1023  mallocedval = ecpg_strdup("{", lineno);
1024  else
1025  mallocedval = ecpg_strdup("", lineno);
1026 
1027  if (!mallocedval)
1028  return false;
1029 
1030  for (element = 0; element < asize; element++)
1031  {
1032  str = quote_postgres(PGTYPEStimestamp_to_asc(((timestamp *) (var->value))[element]), quote, lineno);
1033  if (!str)
1034  {
1035  ecpg_free(mallocedval);
1036  return false;
1037  }
1038 
1039  slen = strlen(str);
1040 
1041  if (!(newcopy = ecpg_realloc(mallocedval, strlen(mallocedval) + slen + 2, lineno)))
1042  {
1043  ecpg_free(mallocedval);
1044  ecpg_free(str);
1045  return false;
1046  }
1047  mallocedval = newcopy;
1048 
1049  /* also copy trailing '\0' */
1050  memcpy(mallocedval + strlen(mallocedval), str, slen + 1);
1051  if (var->arrsize > 1)
1052  strcpy(mallocedval + strlen(mallocedval), ",");
1053 
1054  ecpg_free(str);
1055  }
1056 
1057  if (var->arrsize > 1)
1058  strcpy(mallocedval + strlen(mallocedval) - 1, "}");
1059 
1060  *tobeinserted_p = mallocedval;
1061  }
1062  break;
1063 
1064  case ECPGt_descriptor:
1065  case ECPGt_sqlda:
1066  break;
1067 
1068  default:
1069  /* Not implemented yet */
1070  ecpg_raise(lineno, ECPG_UNSUPPORTED, ECPG_SQLSTATE_ECPG_INTERNAL_ERROR, ecpg_type_name(var->type));
1071  return false;
1072  break;
1073  }
1074  }
1075  return true;
1076 }
1077 
1078 static void
1079 print_param_value(char *value, int len, int is_binary, int lineno, int nth)
1080 {
1081  char *value_s;
1082  bool malloced = false;
1083 
1084  if (value == NULL)
1085  value_s = "null";
1086  else if (!is_binary)
1087  value_s = value;
1088  else
1089  {
1090  value_s = ecpg_alloc(ecpg_hex_enc_len(len) + 1, lineno);
1091  if (value_s != NULL)
1092  {
1093  ecpg_hex_encode(value, len, value_s);
1094  value_s[ecpg_hex_enc_len(len)] = '\0';
1095  malloced = true;
1096  }
1097  else
1098  value_s = "no memory for logging of parameter";
1099  }
1100 
1101  ecpg_log("ecpg_free_params on line %d: parameter %d = %s\n",
1102  lineno, nth, value_s);
1103 
1104  if (malloced)
1105  ecpg_free(value_s);
1106 }
1107 
1108 void
1109 ecpg_free_params(struct statement *stmt, bool print)
1110 {
1111  int n;
1112 
1113  for (n = 0; n < stmt->nparams; n++)
1114  {
1115  if (print)
1116  print_param_value(stmt->paramvalues[n], stmt->paramlengths[n],
1117  stmt->paramformats[n], stmt->lineno, n + 1);
1118  ecpg_free(stmt->paramvalues[n]);
1119  }
1120  ecpg_free(stmt->paramvalues);
1121  ecpg_free(stmt->paramlengths);
1122  ecpg_free(stmt->paramformats);
1123  stmt->paramvalues = NULL;
1124  stmt->paramlengths = NULL;
1125  stmt->paramformats = NULL;
1126  stmt->nparams = 0;
1127 }
1128 
1129 static bool
1130 insert_tobeinserted(int position, int ph_len, struct statement *stmt, char *tobeinserted)
1131 {
1132  char *newcopy;
1133 
1134  if (!(newcopy = (char *) ecpg_alloc(strlen(stmt->command)
1135  + strlen(tobeinserted)
1136  + 1, stmt->lineno)))
1137  {
1138  ecpg_free(tobeinserted);
1139  return false;
1140  }
1141 
1142  strcpy(newcopy, stmt->command);
1143  strcpy(newcopy + position - 1, tobeinserted);
1144 
1145  /*
1146  * The strange thing in the second argument is the rest of the string from
1147  * the old string
1148  */
1149  strcat(newcopy,
1150  stmt->command
1151  + position
1152  + ph_len - 1);
1153 
1154  ecpg_free(stmt->command);
1155  stmt->command = newcopy;
1156 
1157  ecpg_free(tobeinserted);
1158  return true;
1159 }
1160 
1161 static bool
1162 store_input_from_desc(struct statement *stmt, struct descriptor_item *desc_item,
1163  char **tobeinserted)
1164 {
1165  struct variable var;
1166 
1167  /*
1168  * In case of binary data, only allocate memory and memcpy because binary
1169  * data have been already stored into desc_item->data with
1170  * ecpg_store_input() at ECPGset_desc().
1171  */
1172  if (desc_item->is_binary)
1173  {
1174  if (!(*tobeinserted = ecpg_alloc(desc_item->data_len, stmt->lineno)))
1175  return false;
1176  memcpy(*tobeinserted, desc_item->data, desc_item->data_len);
1177  return true;
1178  }
1179 
1180  var.type = ECPGt_char;
1181  var.varcharsize = strlen(desc_item->data);
1182  var.value = desc_item->data;
1183  var.pointer = &(desc_item->data);
1184  var.arrsize = 1;
1185  var.offset = 0;
1186 
1187  if (!desc_item->indicator)
1188  {
1189  var.ind_type = ECPGt_NO_INDICATOR;
1190  var.ind_value = var.ind_pointer = NULL;
1191  var.ind_varcharsize = var.ind_arrsize = var.ind_offset = 0;
1192  }
1193  else
1194  {
1195  var.ind_type = ECPGt_int;
1196  var.ind_value = &(desc_item->indicator);
1197  var.ind_pointer = &(var.ind_value);
1198  var.ind_varcharsize = var.ind_arrsize = 1;
1199  var.ind_offset = 0;
1200  }
1201 
1202  if (!ecpg_store_input(stmt->lineno, stmt->force_indicator, &var, tobeinserted, false))
1203  return false;
1204 
1205  return true;
1206 }
1207 
1208 /*
1209  * ecpg_build_params
1210  * Build statement parameters
1211  *
1212  * The input values are taken from user variables, and the results are stored
1213  * in arrays which can be used by PQexecParams().
1214  */
1215 bool
1216 ecpg_build_params(struct statement *stmt)
1217 {
1218  struct variable *var;
1219  int desc_counter = 0;
1220  int position = 0;
1221  const char *value;
1222  bool std_strings = false;
1223 
1224  /* Get standard_conforming_strings setting. */
1225  value = PQparameterStatus(stmt->connection->connection, "standard_conforming_strings");
1226  if (value && strcmp(value, "on") == 0)
1227  std_strings = true;
1228 
1229  /*
1230  * If the type is one of the fill in types then we take the argument and
1231  * enter it to our parameter array at the first position. Then if there
1232  * are any more fill in types we add more parameters.
1233  */
1234  var = stmt->inlist;
1235  while (var)
1236  {
1237  char *tobeinserted;
1238  int counter = 1;
1239  bool binary_format;
1240  int binary_length;
1241 
1242 
1243  tobeinserted = NULL;
1244  binary_length = 0;
1245  binary_format = false;
1246 
1247  /*
1248  * A descriptor is a special case since it contains many variables but
1249  * is listed only once.
1250  */
1251  if (var->type == ECPGt_descriptor)
1252  {
1253  /*
1254  * We create an additional variable list here, so the same logic
1255  * applies.
1256  */
1257  struct descriptor *desc;
1258  struct descriptor_item *desc_item;
1259 
1260  desc = ecpg_find_desc(stmt->lineno, var->pointer);
1261  if (desc == NULL)
1262  return false;
1263 
1264  desc_counter++;
1265  for (desc_item = desc->items; desc_item; desc_item = desc_item->next)
1266  {
1267  if (desc_item->num != desc_counter)
1268  continue;
1269 
1270  if (!store_input_from_desc(stmt, desc_item, &tobeinserted))
1271  return false;
1272 
1273  if (desc_item->is_binary)
1274  {
1275  binary_length = desc_item->data_len;
1276  binary_format = true;
1277  }
1278  break;
1279  }
1280  if (desc->count == desc_counter)
1281  desc_counter = 0;
1282  }
1283  else if (var->type == ECPGt_sqlda)
1284  {
1285  if (INFORMIX_MODE(stmt->compat))
1286  {
1287  struct sqlda_compat *sqlda = *(struct sqlda_compat **) var->pointer;
1288  struct variable desc_inlist;
1289  int i;
1290 
1291  if (sqlda == NULL)
1292  return false;
1293 
1294  desc_counter++;
1295  for (i = 0; i < sqlda->sqld; i++)
1296  {
1297  if (i + 1 == desc_counter)
1298  {
1299  desc_inlist.type = sqlda->sqlvar[i].sqltype;
1300  desc_inlist.value = sqlda->sqlvar[i].sqldata;
1301  desc_inlist.pointer = &(sqlda->sqlvar[i].sqldata);
1302  switch (desc_inlist.type)
1303  {
1304  case ECPGt_char:
1305  case ECPGt_varchar:
1306  desc_inlist.varcharsize = strlen(sqlda->sqlvar[i].sqldata);
1307  break;
1308  default:
1309  desc_inlist.varcharsize = 0;
1310  break;
1311  }
1312  desc_inlist.arrsize = 1;
1313  desc_inlist.offset = 0;
1314  if (sqlda->sqlvar[i].sqlind)
1315  {
1316  desc_inlist.ind_type = ECPGt_short;
1317  /* ECPG expects indicator value < 0 */
1318  if (*(sqlda->sqlvar[i].sqlind))
1319  *(sqlda->sqlvar[i].sqlind) = -1;
1320  desc_inlist.ind_value = sqlda->sqlvar[i].sqlind;
1321  desc_inlist.ind_pointer = &(sqlda->sqlvar[i].sqlind);
1322  desc_inlist.ind_varcharsize = desc_inlist.ind_arrsize = 1;
1323  desc_inlist.ind_offset = 0;
1324  }
1325  else
1326  {
1327  desc_inlist.ind_type = ECPGt_NO_INDICATOR;
1328  desc_inlist.ind_value = desc_inlist.ind_pointer = NULL;
1329  desc_inlist.ind_varcharsize = desc_inlist.ind_arrsize = desc_inlist.ind_offset = 0;
1330  }
1331  if (!ecpg_store_input(stmt->lineno, stmt->force_indicator, &desc_inlist, &tobeinserted, false))
1332  return false;
1333 
1334  break;
1335  }
1336  }
1337  if (sqlda->sqld == desc_counter)
1338  desc_counter = 0;
1339  }
1340  else
1341  {
1342  struct sqlda_struct *sqlda = *(struct sqlda_struct **) var->pointer;
1343  struct variable desc_inlist;
1344  int i;
1345 
1346  if (sqlda == NULL)
1347  return false;
1348 
1349  desc_counter++;
1350  for (i = 0; i < sqlda->sqln; i++)
1351  {
1352  if (i + 1 == desc_counter)
1353  {
1354  desc_inlist.type = sqlda->sqlvar[i].sqltype;
1355  desc_inlist.value = sqlda->sqlvar[i].sqldata;
1356  desc_inlist.pointer = &(sqlda->sqlvar[i].sqldata);
1357  switch (desc_inlist.type)
1358  {
1359  case ECPGt_char:
1360  case ECPGt_varchar:
1361  desc_inlist.varcharsize = strlen(sqlda->sqlvar[i].sqldata);
1362  break;
1363  default:
1364  desc_inlist.varcharsize = 0;
1365  break;
1366  }
1367  desc_inlist.arrsize = 1;
1368  desc_inlist.offset = 0;
1369  if (sqlda->sqlvar[i].sqlind)
1370  {
1371  desc_inlist.ind_type = ECPGt_short;
1372  /* ECPG expects indicator value < 0 */
1373  if (*(sqlda->sqlvar[i].sqlind))
1374  *(sqlda->sqlvar[i].sqlind) = -1;
1375  desc_inlist.ind_value = sqlda->sqlvar[i].sqlind;
1376  desc_inlist.ind_pointer = &(sqlda->sqlvar[i].sqlind);
1377  desc_inlist.ind_varcharsize = desc_inlist.ind_arrsize = 1;
1378  desc_inlist.ind_offset = 0;
1379  }
1380  else
1381  {
1382  desc_inlist.ind_type = ECPGt_NO_INDICATOR;
1383  desc_inlist.ind_value = desc_inlist.ind_pointer = NULL;
1384  desc_inlist.ind_varcharsize = desc_inlist.ind_arrsize = desc_inlist.ind_offset = 0;
1385  }
1386  if (!ecpg_store_input(stmt->lineno, stmt->force_indicator, &desc_inlist, &tobeinserted, false))
1387  return false;
1388 
1389  break;
1390  }
1391  }
1392  if (sqlda->sqln == desc_counter)
1393  desc_counter = 0;
1394  }
1395 
1396  }
1397  else
1398  {
1399  if (!ecpg_store_input(stmt->lineno, stmt->force_indicator, var, &tobeinserted, false))
1400  return false;
1401 
1402  if (var->type == ECPGt_bytea)
1403  {
1404  binary_length = ((struct ECPGgeneric_varchar *) (var->value))->len;
1405  binary_format = true;
1406  }
1407  }
1408 
1409  /*
1410  * now tobeinserted points to an area that contains the next
1411  * parameter; now find the position in the string where it belongs
1412  */
1413  if ((position = next_insert(stmt->command, position, stmt->questionmarks, std_strings) + 1) == 0)
1414  {
1415  /*
1416  * We have an argument but we don't have the matched up
1417  * placeholder in the string
1418  */
1419  ecpg_raise(stmt->lineno, ECPG_TOO_MANY_ARGUMENTS,
1420  ECPG_SQLSTATE_USING_CLAUSE_DOES_NOT_MATCH_PARAMETERS,
1421  NULL);
1422  ecpg_free_params(stmt, false);
1423  ecpg_free(tobeinserted);
1424  return false;
1425  }
1426 
1427  /*
1428  * if var->type=ECPGt_char_variable we have a dynamic cursor we have
1429  * to simulate a dynamic cursor because there is no backend
1430  * functionality for it
1431  */
1432  if (var->type == ECPGt_char_variable)
1433  {
1434  int ph_len = (stmt->command[position] == '?') ? strlen("?") : strlen("$1");
1435 
1436  if (!insert_tobeinserted(position, ph_len, stmt, tobeinserted))
1437  {
1438  ecpg_free_params(stmt, false);
1439  return false;
1440  }
1441  tobeinserted = NULL;
1442  }
1443 
1444  /*
1445  * if the placeholder is '$0' we have to replace it on the client side
1446  * this is for places we want to support variables at that are not
1447  * supported in the backend
1448  */
1449  else if (stmt->command[position] == '0')
1450  {
1451  if (stmt->statement_type == ECPGst_prepare ||
1452  stmt->statement_type == ECPGst_exec_with_exprlist)
1453  {
1454  /* Need to double-quote the inserted statement name. */
1455  char *str = ecpg_alloc(strlen(tobeinserted) + 2 + 1,
1456  stmt->lineno);
1457 
1458  if (!str)
1459  {
1460  ecpg_free(tobeinserted);
1461  ecpg_free_params(stmt, false);
1462  return false;
1463  }
1464  sprintf(str, "\"%s\"", tobeinserted);
1465  ecpg_free(tobeinserted);
1466  tobeinserted = str;
1467  }
1468 
1469  if (!insert_tobeinserted(position, 2, stmt, tobeinserted))
1470  {
1471  ecpg_free_params(stmt, false);
1472  return false;
1473  }
1474  tobeinserted = NULL;
1475  }
1476  else if (stmt->statement_type == ECPGst_exec_with_exprlist)
1477  {
1478  if (binary_format)
1479  {
1480  char *p = convert_bytea_to_string(tobeinserted,
1481  binary_length,
1482  stmt->lineno);
1483 
1484  ecpg_free(tobeinserted);
1485  if (!p)
1486  {
1487  ecpg_free_params(stmt, false);
1488  return false;
1489  }
1490  tobeinserted = p;
1491  }
1492 
1493  if (!insert_tobeinserted(position, 2, stmt, tobeinserted))
1494  {
1495  ecpg_free_params(stmt, false);
1496  return false;
1497  }
1498  tobeinserted = NULL;
1499  }
1500  else
1501  {
1502  if (!(stmt->paramvalues = (char **) ecpg_realloc(stmt->paramvalues, sizeof(char *) * (stmt->nparams + 1), stmt->lineno)))
1503  {
1504  ecpg_free_params(stmt, false);
1505  ecpg_free(tobeinserted);
1506  return false;
1507  }
1508  stmt->paramvalues[stmt->nparams] = tobeinserted;
1509 
1510  if (!(stmt->paramlengths = (int *) ecpg_realloc(stmt->paramlengths, sizeof(int) * (stmt->nparams + 1), stmt->lineno)))
1511  {
1512  ecpg_free_params(stmt, false);
1513  return false;
1514  }
1515  stmt->paramlengths[stmt->nparams] = binary_length;
1516 
1517  if (!(stmt->paramformats = (int *) ecpg_realloc(stmt->paramformats, sizeof(int) * (stmt->nparams + 1), stmt->lineno)))
1518  {
1519  ecpg_free_params(stmt, false);
1520  return false;
1521  }
1522  stmt->paramformats[stmt->nparams] = (binary_format ? 1 : 0);
1523  stmt->nparams++;
1524 
1525  /* let's see if this was an old style placeholder */
1526  if (stmt->command[position] == '?')
1527  {
1528  /* yes, replace with new style */
1529  int buffersize = sizeof(int) * CHAR_BIT * 10 / 3; /* a rough guess of the
1530  * size we need */
1531 
1532  if (!(tobeinserted = (char *) ecpg_alloc(buffersize, stmt->lineno)))
1533  {
1534  ecpg_free_params(stmt, false);
1535  return false;
1536  }
1537 
1538  snprintf(tobeinserted, buffersize, "$%d", counter++);
1539 
1540  if (!insert_tobeinserted(position, 2, stmt, tobeinserted))
1541  {
1542  ecpg_free_params(stmt, false);
1543  return false;
1544  }
1545  tobeinserted = NULL;
1546  }
1547  }
1548 
1549  if (desc_counter == 0)
1550  var = var->next;
1551  }
1552 
1553  /*
1554  * Check if there are unmatched things left. PREPARE AS has no parameter.
1555  * Check other statement.
1556  */
1557  if (stmt->statement_type != ECPGst_prepare &&
1558  next_insert(stmt->command, position, stmt->questionmarks, std_strings) >= 0)
1559  {
1560  ecpg_raise(stmt->lineno, ECPG_TOO_FEW_ARGUMENTS,
1561  ECPG_SQLSTATE_USING_CLAUSE_DOES_NOT_MATCH_PARAMETERS, NULL);
1562  ecpg_free_params(stmt, false);
1563  return false;
1564  }
1565 
1566  return true;
1567 }
1568 
1569 /*
1570  * ecpg_autostart_transaction
1571  * If we are in non-autocommit mode, automatically start a transaction.
1572  */
1573 bool
1574 ecpg_autostart_transaction(struct statement *stmt)
1575 {
1576  if (PQtransactionStatus(stmt->connection->connection) == PQTRANS_IDLE && !stmt->connection->autocommit)
1577  {
1578  stmt->results = PQexec(stmt->connection->connection, "begin transaction");
1579  if (!ecpg_check_PQresult(stmt->results, stmt->lineno, stmt->connection->connection, stmt->compat))
1580  {
1581  ecpg_free_params(stmt, false);
1582  return false;
1583  }
1584  PQclear(stmt->results);
1585  stmt->results = NULL;
1586  }
1587  return true;
1588 }
1589 
1590 /*
1591  * ecpg_execute
1592  * Execute the SQL statement.
1593  */
1594 bool
1595 ecpg_execute(struct statement *stmt)
1596 {
1597  ecpg_log("ecpg_execute on line %d: query: %s; with %d parameter(s) on connection %s\n", stmt->lineno, stmt->command, stmt->nparams, stmt->connection->name);
1598  if (stmt->statement_type == ECPGst_execute)
1599  {
1600  stmt->results = PQexecPrepared(stmt->connection->connection,
1601  stmt->name,
1602  stmt->nparams,
1603  (const char *const *) stmt->paramvalues,
1604  (const int *) stmt->paramlengths,
1605  (const int *) stmt->paramformats,
1606  0);
1607  ecpg_log("ecpg_execute on line %d: using PQexecPrepared for \"%s\"\n", stmt->lineno, stmt->command);
1608  }
1609  else
1610  {
1611  if (stmt->nparams == 0)
1612  {
1613  stmt->results = PQexec(stmt->connection->connection, stmt->command);
1614  ecpg_log("ecpg_execute on line %d: using PQexec\n", stmt->lineno);
1615  }
1616  else
1617  {
1618  stmt->results = PQexecParams(stmt->connection->connection,
1619  stmt->command, stmt->nparams, NULL,
1620  (const char *const *) stmt->paramvalues,
1621  (const int *) stmt->paramlengths,
1622  (const int *) stmt->paramformats,
1623  0);
1624 
1625  ecpg_log("ecpg_execute on line %d: using PQexecParams\n", stmt->lineno);
1626  }
1627 
1628  if (stmt->statement_type == ECPGst_prepare)
1629  {
1630  if (!ecpg_register_prepared_stmt(stmt))
1631  {
1632  ecpg_free_params(stmt, true);
1633  return false;
1634  }
1635  }
1636  }
1637 
1638  ecpg_free_params(stmt, true);
1639 
1640  if (!ecpg_check_PQresult(stmt->results, stmt->lineno, stmt->connection->connection, stmt->compat))
1641  return false;
1642 
1643  return true;
1644 }
1645 
1646 /*-------
1647  * ecpg_process_output
1648  *
1649  * Process the statement result and store it into application variables. This
1650  * function can be called repeatedly during the same statement in case cursor
1651  * readahead is used and the application does FETCH N which overflows the
1652  * readahead window.
1653  *
1654  * Parameters
1655  * stmt statement structure holding the PGresult and
1656  * the list of output variables
1657  * clear_result
1658  * PQclear() the result upon returning from this function
1659  *
1660  * Returns success as boolean. Also an SQL error is raised in case of failure.
1661  *-------
1662  */
1663 bool
1664 ecpg_process_output(struct statement *stmt, bool clear_result)
1665 {
1666  struct variable *var;
1667  bool status = false;
1668  char *cmdstat;
1669  PGnotify *notify;
1670  struct sqlca_t *sqlca = ECPGget_sqlca();
1671  int nfields,
1672  ntuples,
1673  act_field;
1674 
1675  if (sqlca == NULL)
1676  {
1677  ecpg_raise(stmt->lineno, ECPG_OUT_OF_MEMORY,
1678  ECPG_SQLSTATE_ECPG_OUT_OF_MEMORY, NULL);
1679  return false;
1680  }
1681 
1682  var = stmt->outlist;
1683  switch (PQresultStatus(stmt->results))
1684  {
1685  case PGRES_TUPLES_OK:
1686  nfields = PQnfields(stmt->results);
1687  sqlca->sqlerrd[2] = ntuples = PQntuples(stmt->results);
1688 
1689  ecpg_log("ecpg_process_output on line %d: correctly got %d tuples with %d fields\n", stmt->lineno, ntuples, nfields);
1690  status = true;
1691 
1692  if (ntuples < 1)
1693  {
1694  if (ntuples)
1695  ecpg_log("ecpg_process_output on line %d: incorrect number of matches (%d)\n",
1696  stmt->lineno, ntuples);
1697  ecpg_raise(stmt->lineno, ECPG_NOT_FOUND, ECPG_SQLSTATE_NO_DATA, NULL);
1698  status = false;
1699  break;
1700  }
1701 
1702  if (var != NULL && var->type == ECPGt_descriptor)
1703  {
1704  struct descriptor *desc = ecpg_find_desc(stmt->lineno, var->pointer);
1705 
1706  if (desc == NULL)
1707  status = false;
1708  else
1709  {
1710  if (desc->result)
1711  PQclear(desc->result);
1712  desc->result = stmt->results;
1713  clear_result = false;
1714  ecpg_log("ecpg_process_output on line %d: putting result (%d tuples) into descriptor %s\n",
1715  stmt->lineno, PQntuples(stmt->results), (const char *) var->pointer);
1716  }
1717  var = var->next;
1718  }
1719  else if (var != NULL && var->type == ECPGt_sqlda)
1720  {
1721  if (INFORMIX_MODE(stmt->compat))
1722  {
1723  struct sqlda_compat **_sqlda = (struct sqlda_compat **) var->pointer;
1724  struct sqlda_compat *sqlda = *_sqlda;
1725  struct sqlda_compat *sqlda_new;
1726  int i;
1727 
1728  /*
1729  * If we are passed in a previously existing sqlda (chain)
1730  * then free it.
1731  */
1732  while (sqlda)
1733  {
1734  sqlda_new = sqlda->desc_next;
1735  free(sqlda);
1736  sqlda = sqlda_new;
1737  }
1738  *_sqlda = sqlda = sqlda_new = NULL;
1739  for (i = ntuples - 1; i >= 0; i--)
1740  {
1741  /*
1742  * Build a new sqlda structure. Note that only
1743  * fetching 1 record is supported
1744  */
1745  sqlda_new = ecpg_build_compat_sqlda(stmt->lineno, stmt->results, i, stmt->compat);
1746 
1747  if (!sqlda_new)
1748  {
1749  /* cleanup all SQLDAs we created up */
1750  while (sqlda)
1751  {
1752  sqlda_new = sqlda->desc_next;
1753  free(sqlda);
1754  sqlda = sqlda_new;
1755  }
1756  *_sqlda = NULL;
1757 
1758  ecpg_log("ecpg_process_output on line %d: out of memory allocating a new sqlda\n", stmt->lineno);
1759  status = false;
1760  break;
1761  }
1762  else
1763  {
1764  ecpg_log("ecpg_process_output on line %d: new sqlda was built\n", stmt->lineno);
1765 
1766  *_sqlda = sqlda_new;
1767 
1768  ecpg_set_compat_sqlda(stmt->lineno, _sqlda, stmt->results, i, stmt->compat);
1769  ecpg_log("ecpg_process_output on line %d: putting result (1 tuple %d fields) into sqlda descriptor\n",
1770  stmt->lineno, PQnfields(stmt->results));
1771 
1772  sqlda_new->desc_next = sqlda;
1773  sqlda = sqlda_new;
1774  }
1775  }
1776  }
1777  else
1778  {
1779  struct sqlda_struct **_sqlda = (struct sqlda_struct **) var->pointer;
1780  struct sqlda_struct *sqlda = *_sqlda;
1781  struct sqlda_struct *sqlda_new;
1782  int i;
1783 
1784  /*
1785  * If we are passed in a previously existing sqlda (chain)
1786  * then free it.
1787  */
1788  while (sqlda)
1789  {
1790  sqlda_new = sqlda->desc_next;
1791  free(sqlda);
1792  sqlda = sqlda_new;
1793  }
1794  *_sqlda = sqlda = sqlda_new = NULL;
1795  for (i = ntuples - 1; i >= 0; i--)
1796  {
1797  /*
1798  * Build a new sqlda structure. Note that only
1799  * fetching 1 record is supported
1800  */
1801  sqlda_new = ecpg_build_native_sqlda(stmt->lineno, stmt->results, i, stmt->compat);
1802 
1803  if (!sqlda_new)
1804  {
1805  /* cleanup all SQLDAs we created up */
1806  while (sqlda)
1807  {
1808  sqlda_new = sqlda->desc_next;
1809  free(sqlda);
1810  sqlda = sqlda_new;
1811  }
1812  *_sqlda = NULL;
1813 
1814  ecpg_log("ecpg_process_output on line %d: out of memory allocating a new sqlda\n", stmt->lineno);
1815  status = false;
1816  break;
1817  }
1818  else
1819  {
1820  ecpg_log("ecpg_process_output on line %d: new sqlda was built\n", stmt->lineno);
1821 
1822  *_sqlda = sqlda_new;
1823 
1824  ecpg_set_native_sqlda(stmt->lineno, _sqlda, stmt->results, i, stmt->compat);
1825  ecpg_log("ecpg_process_output on line %d: putting result (1 tuple %d fields) into sqlda descriptor\n",
1826  stmt->lineno, PQnfields(stmt->results));
1827 
1828  sqlda_new->desc_next = sqlda;
1829  sqlda = sqlda_new;
1830  }
1831  }
1832  }
1833 
1834  var = var->next;
1835  }
1836  else
1837  for (act_field = 0; act_field < nfields && status; act_field++)
1838  {
1839  if (var != NULL)
1840  {
1841  status = ecpg_store_result(stmt->results, act_field, stmt, var);
1842  var = var->next;
1843  }
1844  else if (!INFORMIX_MODE(stmt->compat))
1845  {
1846  ecpg_raise(stmt->lineno, ECPG_TOO_FEW_ARGUMENTS, ECPG_SQLSTATE_USING_CLAUSE_DOES_NOT_MATCH_TARGETS, NULL);
1847  return false;
1848  }
1849  }
1850 
1851  if (status && var != NULL)
1852  {
1853  ecpg_raise(stmt->lineno, ECPG_TOO_MANY_ARGUMENTS, ECPG_SQLSTATE_USING_CLAUSE_DOES_NOT_MATCH_TARGETS, NULL);
1854  status = false;
1855  }
1856 
1857  break;
1858  case PGRES_COMMAND_OK:
1859  status = true;
1860  cmdstat = PQcmdStatus(stmt->results);
1861  sqlca->sqlerrd[1] = PQoidValue(stmt->results);
1862  sqlca->sqlerrd[2] = atol(PQcmdTuples(stmt->results));
1863  ecpg_log("ecpg_process_output on line %d: OK: %s\n", stmt->lineno, cmdstat);
1864  if (stmt->compat != ECPG_COMPAT_INFORMIX_SE &&
1865  !sqlca->sqlerrd[2] &&
1866  (strncmp(cmdstat, "UPDATE", 6) == 0
1867  || strncmp(cmdstat, "INSERT", 6) == 0
1868  || strncmp(cmdstat, "DELETE", 6) == 0))
1869  ecpg_raise(stmt->lineno, ECPG_NOT_FOUND, ECPG_SQLSTATE_NO_DATA, NULL);
1870  break;
1871  case PGRES_COPY_OUT:
1872  {
1873  char *buffer;
1874  int res;
1875 
1876  ecpg_log("ecpg_process_output on line %d: COPY OUT data transfer in progress\n", stmt->lineno);
1877  while ((res = PQgetCopyData(stmt->connection->connection,
1878  &buffer, 0)) > 0)
1879  {
1880  printf("%s", buffer);
1881  PQfreemem(buffer);
1882  }
1883  if (res == -1)
1884  {
1885  /* COPY done */
1886  PQclear(stmt->results);
1887  stmt->results = PQgetResult(stmt->connection->connection);
1888  if (PQresultStatus(stmt->results) == PGRES_COMMAND_OK)
1889  ecpg_log("ecpg_process_output on line %d: got PGRES_COMMAND_OK after PGRES_COPY_OUT\n", stmt->lineno);
1890  else
1891  ecpg_log("ecpg_process_output on line %d: got error after PGRES_COPY_OUT: %s", stmt->lineno, PQresultErrorMessage(stmt->results));
1892  }
1893  break;
1894  }
1895  default:
1896 
1897  /*
1898  * execution should never reach this code because it is already
1899  * handled in ecpg_check_PQresult()
1900  */
1901  ecpg_log("ecpg_process_output on line %d: unknown execution status type\n",
1902  stmt->lineno);
1903  ecpg_raise_backend(stmt->lineno, stmt->results, stmt->connection->connection, stmt->compat);
1904  status = false;
1905  break;
1906  }
1907 
1908  if (clear_result)
1909  {
1910  PQclear(stmt->results);
1911  stmt->results = NULL;
1912  }
1913 
1914  /* check for asynchronous returns */
1915  PQconsumeInput(stmt->connection->connection);
1916  while ((notify = PQnotifies(stmt->connection->connection)) != NULL)
1917  {
1918  ecpg_log("ecpg_process_output on line %d: asynchronous notification of \"%s\" from backend PID %d received\n",
1919  stmt->lineno, notify->relname, notify->be_pid);
1920  PQfreemem(notify);
1921  PQconsumeInput(stmt->connection->connection);
1922  }
1923 
1924  return status;
1925 }
1926 
1927 /*
1928  * ecpg_do_prologue
1929  *
1930  * Initialize various infrastructure elements for executing the statement:
1931  *
1932  * - create the statement structure
1933  * - set the C numeric locale for communicating with the backend
1934  * - preprocess the variable list of input/output parameters into
1935  * linked lists
1936  */
1937 bool
1938 ecpg_do_prologue(int lineno, const int compat, const int force_indicator,
1939  const char *connection_name, const bool questionmarks,
1940  enum ECPG_statement_type statement_type, const char *query,
1941  va_list args, struct statement **stmt_out)
1942 {
1943  struct statement *stmt = NULL;
1944  struct connection *con;
1945  enum ECPGttype type;
1946  struct variable **list;
1947  char *prepname;
1948  bool is_prepared_name_set;
1949 
1950  *stmt_out = NULL;
1951 
1952  if (!query)
1953  {
1954  ecpg_raise(lineno, ECPG_EMPTY, ECPG_SQLSTATE_ECPG_INTERNAL_ERROR, NULL);
1955  return false;
1956  }
1957 
1958  stmt = (struct statement *) ecpg_alloc(sizeof(struct statement), lineno);
1959 
1960  if (stmt == NULL)
1961  return false;
1962 
1963  /*
1964  * Make sure we do NOT honor the locale for numeric input/output since the
1965  * database wants the standard decimal point. If available, use
1966  * uselocale() for this because it's thread-safe. Windows doesn't have
1967  * that, but it usually does have _configthreadlocale(). In some versions
1968  * of MinGW, _configthreadlocale() exists but always returns -1 --- so
1969  * treat that situation as if the function doesn't exist.
1970  */
1971 #ifdef HAVE_USELOCALE
1972  stmt->clocale = newlocale(LC_NUMERIC_MASK, "C", (locale_t) 0);
1973  if (stmt->clocale == (locale_t) 0)
1974  {
1975  ecpg_do_epilogue(stmt);
1976  return false;
1977  }
1978  stmt->oldlocale = uselocale(stmt->clocale);
1979  if (stmt->oldlocale == (locale_t) 0)
1980  {
1981  ecpg_do_epilogue(stmt);
1982  return false;
1983  }
1984 #else
1985 #ifdef HAVE__CONFIGTHREADLOCALE
1986  stmt->oldthreadlocale = _configthreadlocale(_ENABLE_PER_THREAD_LOCALE);
1987 #endif
1988  stmt->oldlocale = ecpg_strdup(setlocale(LC_NUMERIC, NULL), lineno);
1989  if (stmt->oldlocale == NULL)
1990  {
1991  ecpg_do_epilogue(stmt);
1992  return false;
1993  }
1994  setlocale(LC_NUMERIC, "C");
1995 #endif
1996 
1997 #ifdef ENABLE_THREAD_SAFETY
1998  ecpg_pthreads_init();
1999 #endif
2000 
2001  con = ecpg_get_connection(connection_name);
2002 
2003  if (!ecpg_init(con, connection_name, lineno))
2004  {
2005  ecpg_do_epilogue(stmt);
2006  return false;
2007  }
2008 
2009  /*
2010  * If statement type is ECPGst_prepnormal we are supposed to prepare the
2011  * statement before executing them
2012  */
2013  if (statement_type == ECPGst_prepnormal)
2014  {
2015  if (!ecpg_auto_prepare(lineno, connection_name, compat, &prepname, query))
2016  {
2017  ecpg_do_epilogue(stmt);
2018  return false;
2019  }
2020 
2021  /*
2022  * statement is now prepared, so instead of the query we have to
2023  * execute the name
2024  */
2025  stmt->command = prepname;
2026  statement_type = ECPGst_execute;
2027  }
2028  else
2029  stmt->command = ecpg_strdup(query, lineno);
2030 
2031  stmt->name = NULL;
2032 
2033  if (statement_type == ECPGst_execute)
2034  {
2035  /* if we have an EXECUTE command, only the name is send */
2036  char *command = ecpg_prepared(stmt->command, con);
2037 
2038  if (command)
2039  {
2040  stmt->name = stmt->command;
2041  stmt->command = ecpg_strdup(command, lineno);
2042  }
2043  else
2044  {
2045  ecpg_raise(lineno, ECPG_INVALID_STMT, ECPG_SQLSTATE_INVALID_SQL_STATEMENT_NAME, stmt->command);
2046  ecpg_do_epilogue(stmt);
2047  return false;
2048  }
2049  }
2050  /* name of PREPARE AS will be set in loop of inlist */
2051 
2052  stmt->connection = con;
2053  stmt->lineno = lineno;
2054  stmt->compat = compat;
2055  stmt->force_indicator = force_indicator;
2056  stmt->questionmarks = questionmarks;
2057  stmt->statement_type = statement_type;
2058 
2059  /*------
2060  * create a list of variables
2061  *
2062  * The variables are listed with input variables preceding output
2063  * variables. The end of each group is marked by an end marker.
2064  * Per variable we list:
2065  *
2066  * type - as defined in ecpgtype.h
2067  * value - where to store the data
2068  * varcharsize - length of string in case we have a stringvariable, else 0
2069  * arraysize - 0 for pointer (we don't know the size of the array), 1 for
2070  * simple variable, size for arrays
2071  * offset - offset between ith and (i+1)th entry in an array, normally
2072  * that means sizeof(type)
2073  * ind_type - type of indicator variable
2074  * ind_pointer - pointer to indicator variable
2075  * ind_varcharsize - empty
2076  * ind_arrsize - arraysize of indicator array
2077  * ind_offset - indicator offset
2078  *------
2079  */
2080 
2081  is_prepared_name_set = false;
2082 
2083  list = &(stmt->inlist);
2084 
2085  type = va_arg(args, enum ECPGttype);
2086 
2087  while (type != ECPGt_EORT)
2088  {
2089  if (type == ECPGt_EOIT)
2090  list = &(stmt->outlist);
2091  else
2092  {
2093  struct variable *var,
2094  *ptr;
2095 
2096  if (!(var = (struct variable *) ecpg_alloc(sizeof(struct variable), lineno)))
2097  {
2098  ecpg_do_epilogue(stmt);
2099  return false;
2100  }
2101 
2102  var->type = type;
2103  var->pointer = va_arg(args, char *);
2104 
2105  var->varcharsize = va_arg(args, long);
2106  var->arrsize = va_arg(args, long);
2107  var->offset = va_arg(args, long);
2108 
2109  /*
2110  * Unknown array size means pointer to an array. Unknown
2111  * varcharsize usually also means pointer. But if the type is
2112  * character and the array size is known, it is an array of
2113  * pointers to char, so use var->pointer as it is.
2114  */
2115  if (var->arrsize == 0 ||
2116  (var->varcharsize == 0 && ((var->type != ECPGt_char && var->type != ECPGt_unsigned_char) || (var->arrsize <= 1))))
2117  var->value = *((char **) (var->pointer));
2118  else
2119  var->value = var->pointer;
2120 
2121  /*
2122  * negative values are used to indicate an array without given
2123  * bounds
2124  */
2125  /* reset to zero for us */
2126  if (var->arrsize < 0)
2127  var->arrsize = 0;
2128  if (var->varcharsize < 0)
2129  var->varcharsize = 0;
2130 
2131  var->next = NULL;
2132 
2133  var->ind_type = va_arg(args, enum ECPGttype);
2134  var->ind_pointer = va_arg(args, char *);
2135  var->ind_varcharsize = va_arg(args, long);
2136  var->ind_arrsize = va_arg(args, long);
2137  var->ind_offset = va_arg(args, long);
2138 
2139  if (var->ind_type != ECPGt_NO_INDICATOR
2140  && (var->ind_arrsize == 0 || var->ind_varcharsize == 0))
2141  var->ind_value = *((char **) (var->ind_pointer));
2142  else
2143  var->ind_value = var->ind_pointer;
2144 
2145  /*
2146  * negative values are used to indicate an array without given
2147  * bounds
2148  */
2149  /* reset to zero for us */
2150  if (var->ind_arrsize < 0)
2151  var->ind_arrsize = 0;
2152  if (var->ind_varcharsize < 0)
2153  var->ind_varcharsize = 0;
2154 
2155  /* if variable is NULL, the statement hasn't been prepared */
2156  if (var->pointer == NULL)
2157  {
2158  ecpg_raise(lineno, ECPG_INVALID_STMT, ECPG_SQLSTATE_INVALID_SQL_STATEMENT_NAME, NULL);
2159  ecpg_free(var);
2160  ecpg_do_epilogue(stmt);
2161  return false;
2162  }
2163 
2164  for (ptr = *list; ptr && ptr->next; ptr = ptr->next)
2165  ;
2166 
2167  if (ptr == NULL)
2168  *list = var;
2169  else
2170  ptr->next = var;
2171 
2172  if (!is_prepared_name_set && stmt->statement_type == ECPGst_prepare)
2173  {
2174  stmt->name = ecpg_strdup(var->value, lineno);
2175  is_prepared_name_set = true;
2176  }
2177  }
2178 
2179  type = va_arg(args, enum ECPGttype);
2180  }
2181 
2182  /* are we connected? */
2183  if (con == NULL || con->connection == NULL)
2184  {
2185  ecpg_raise(lineno, ECPG_NOT_CONN, ECPG_SQLSTATE_ECPG_INTERNAL_ERROR, (con) ? con->name : ecpg_gettext("<empty>"));
2186  ecpg_do_epilogue(stmt);
2187  return false;
2188  }
2189 
2190  if (!is_prepared_name_set && stmt->statement_type == ECPGst_prepare)
2191  {
2192  ecpg_raise(lineno, ECPG_TOO_FEW_ARGUMENTS, ECPG_SQLSTATE_ECPG_INTERNAL_ERROR, (con) ? con->name : ecpg_gettext("<empty>"));
2193  ecpg_do_epilogue(stmt);
2194  return false;
2195  }
2196 
2197  /* initialize auto_mem struct */
2198  ecpg_clear_auto_mem();
2199 
2200  *stmt_out = stmt;
2201 
2202  return true;
2203 }
2204 
2205 /*
2206  * ecpg_do_epilogue
2207  * Restore the application locale and free the statement structure.
2208  */
2209 void
2210 ecpg_do_epilogue(struct statement *stmt)
2211 {
2212  if (stmt == NULL)
2213  return;
2214 
2215 #ifdef HAVE_USELOCALE
2216  if (stmt->oldlocale != (locale_t) 0)
2217  uselocale(stmt->oldlocale);
2218 #else
2219  if (stmt->oldlocale)
2220  setlocale(LC_NUMERIC, stmt->oldlocale);
2221 #ifdef HAVE__CONFIGTHREADLOCALE
2222 
2223  /*
2224  * This is a bit trickier than it looks: if we failed partway through
2225  * statement initialization, oldthreadlocale could still be 0. But that's
2226  * okay because a call with 0 is defined to be a no-op.
2227  */
2228  if (stmt->oldthreadlocale != -1)
2229  (void) _configthreadlocale(stmt->oldthreadlocale);
2230 #endif
2231 #endif
2232 
2233  free_statement(stmt);
2234 }
2235 
2236 /*
2237  * Execute SQL statements in the backend.
2238  * The input/output parameters (variable argument list) are passed
2239  * in a va_list, so other functions can use this interface.
2240  */
2241 bool
2242 ecpg_do(const int lineno, const int compat, const int force_indicator, const char *connection_name, const bool questionmarks, const int st, const char *query, va_list args)
2243 {
2244  struct statement *stmt = NULL;
2245 
2246  if (!ecpg_do_prologue(lineno, compat, force_indicator, connection_name,
2247  questionmarks, (enum ECPG_statement_type) st,
2248  query, args, &stmt))
2249  goto fail;
2250 
2251  if (!ecpg_build_params(stmt))
2252  goto fail;
2253 
2254  if (!ecpg_autostart_transaction(stmt))
2255  goto fail;
2256 
2257  if (!ecpg_execute(stmt))
2258  goto fail;
2259 
2260  if (!ecpg_process_output(stmt, true))
2261  goto fail;
2262 
2263  ecpg_do_epilogue(stmt);
2264  return true;
2265 
2266 fail:
2267  ecpg_do_epilogue(stmt);
2268  return false;
2269 }
2270 
2271 /*
2272  * Execute SQL statements in the backend.
2273  * The input/output parameters are passed as variable-length argument list.
2274  */
2275 bool
2276 ECPGdo(const int lineno, const int compat, const int force_indicator, const char *connection_name, const bool questionmarks, const int st, const char *query,...)
2277 {
2278  va_list args;
2279  bool ret;
2280 
2281  va_start(args, query);
2282  ret = ecpg_do(lineno, compat, force_indicator, connection_name,
2283  questionmarks, st, query, args);
2284  va_end(args);
2285 
2286  return ret;
2287 }
2288 
2289 /* old descriptor interface */
2290 bool
2291 ECPGdo_descriptor(int line, const char *connection,
2292  const char *descriptor, const char *query)
2293 {
2294  return ECPGdo(line, ECPG_COMPAT_PGSQL, true, connection, '\0', 0, query, ECPGt_EOIT,
2295  ECPGt_descriptor, descriptor, 0L, 0L, 0L,
2296  ECPGt_NO_INDICATOR, NULL, 0L, 0L, 0L, ECPGt_EORT);
2297 }
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Definition: ecpgerrno.h:32
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Definition: data.c:206
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Definition: execute.c:1938
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Definition: fe-exec.c:694
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Definition: ecpglib_extern.h:40
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Definition: ecpglib_extern.h:143
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Definition: sqlda-compat.h:39
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Definition: ecpglib_extern.h:67
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Definition: ecpglib_extern.h:118
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Definition: interval.c:1066
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Definition: misc.c:388
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Definition: ecpgerrno.h:58
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Definition: execute.c:2210
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Definition: ecpglib_extern.h:85
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Definition: ecpglib_extern.h:132
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Definition: fe-exec.c:2708
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Definition: fe-exec.c:1953
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Definition: ecpglib_extern.h:72
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Definition: execute.c:459
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Definition: connect.c:74
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Definition: ecpglib_extern.h:247
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Definition: ecpg.c:18
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Definition: ecpglib_extern.h:144
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Definition: execute.c:509
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Definition: sqlda-compat.h:13
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Definition: fe-exec.c:1939
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Definition: pg_backup_utils.c:27
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Definition: pg_regress.c:226
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Definition: ecpglib_extern.h:59
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Definition: execute.c:2242
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Definition: ecpglib_extern.h:58
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Definition: fe-exec.c:2996
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Definition: port.h:192
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Definition: fe-exec.c:3296
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Definition: misc.c:104
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Definition: fe-exec.c:1778
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Definition: error.c:219
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Definition: ecpglib_extern.h:140
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Definition: sqlda-compat.h:40
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Definition: ecpgtype.h:41