Line data Source code
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 2244 : 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 2244 : if (!quote)
52 2244 : return arg;
53 : else
54 : {
55 0 : length = strlen(arg);
56 0 : buffer_len = 2 * length + 1;
57 0 : res = (char *) ecpg_alloc(buffer_len + 3, lineno);
58 0 : if (!res)
59 0 : return res;
60 0 : escaped_len = PQescapeString(res + 1, arg, buffer_len);
61 0 : if (length == escaped_len)
62 : {
63 0 : res[0] = res[escaped_len + 1] = '\'';
64 0 : 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 0 : memmove(res + 2, res + 1, escaped_len);
73 0 : res[0] = ESCAPE_STRING_SYNTAX;
74 0 : res[1] = res[escaped_len + 2] = '\'';
75 0 : res[escaped_len + 3] = '\0';
76 : }
77 0 : ecpg_free(arg);
78 0 : return res;
79 : }
80 : }
81 :
82 : static void
83 21236 : free_variable(struct variable *var)
84 : {
85 : struct variable *var_next;
86 :
87 33776 : while (var)
88 : {
89 12540 : var_next = var->next;
90 12540 : ecpg_free(var);
91 12540 : var = var_next;
92 : }
93 21236 : }
94 :
95 : static void
96 10618 : free_statement(struct statement *stmt)
97 : {
98 10618 : if (stmt == NULL)
99 0 : return;
100 10618 : free_variable(stmt->inlist);
101 10618 : free_variable(stmt->outlist);
102 10618 : ecpg_free(stmt->command);
103 10618 : ecpg_free(stmt->name);
104 : #ifndef HAVE_USELOCALE
105 : ecpg_free(stmt->oldlocale);
106 : #endif
107 10618 : ecpg_free(stmt);
108 : }
109 :
110 : static int
111 17914 : next_insert(char *text, int pos, bool questionmarks, bool std_strings)
112 : {
113 17914 : bool string = false;
114 17914 : int p = pos;
115 :
116 479330 : for (; text[p] != '\0'; p++)
117 : {
118 468732 : if (string && !std_strings && text[p] == '\\') /* escape character */
119 16 : p++;
120 468716 : else if (text[p] == '\'')
121 7900 : string = string ? false : true;
122 460816 : else if (!string)
123 : {
124 430634 : if (text[p] == '$' && isdigit((unsigned char) text[p + 1]))
125 0 : {
126 : /* this can be either a dollar quote or a variable */
127 : int i;
128 :
129 14636 : for (i = p + 1; isdigit((unsigned char) text[i]); i++)
130 : /* empty loop body */ ;
131 7316 : if (!isalpha((unsigned char) text[i]) &&
132 7316 : isascii((unsigned char) text[i]) && text[i] != '_')
133 : /* not dollar delimited quote */
134 7316 : return p;
135 : }
136 423318 : else if (questionmarks && text[p] == '?')
137 : {
138 : /* also allow old style placeholders */
139 0 : return p;
140 : }
141 : }
142 : }
143 :
144 10598 : return -1;
145 : }
146 :
147 : static bool
148 10168 : ecpg_type_infocache_push(struct ECPGtype_information_cache **cache, int oid, enum ARRAY_TYPE isarray, int lineno)
149 : {
150 : struct ECPGtype_information_cache *new_entry
151 10168 : = (struct ECPGtype_information_cache *) ecpg_alloc(sizeof(struct ECPGtype_information_cache), lineno);
152 :
153 10168 : if (new_entry == NULL)
154 0 : return false;
155 :
156 10168 : new_entry->oid = oid;
157 10168 : new_entry->isarray = isarray;
158 10168 : new_entry->next = *cache;
159 10168 : *cache = new_entry;
160 10168 : return true;
161 : }
162 :
163 : static enum ARRAY_TYPE
164 5012 : ecpg_is_type_an_array(int type, const struct statement *stmt, const struct variable *var)
165 : {
166 : char *array_query;
167 5012 : enum ARRAY_TYPE isarray = ECPG_ARRAY_NOT_SET;
168 : PGresult *query;
169 : struct ECPGtype_information_cache *cache_entry;
170 :
171 5012 : if ((stmt->connection->cache_head) == NULL)
172 : {
173 : /*
174 : * Text like types are not an array for ecpg, but postgres counts them
175 : * as an array. This define reminds you to not 'correct' these values.
176 : */
177 : #define not_an_array_in_ecpg ECPG_ARRAY_NONE
178 :
179 : /* populate cache with well known types to speed things up */
180 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), BOOLOID, ECPG_ARRAY_NONE, stmt->lineno))
181 0 : return ECPG_ARRAY_ERROR;
182 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), BYTEAOID, ECPG_ARRAY_NONE, stmt->lineno))
183 0 : return ECPG_ARRAY_ERROR;
184 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), CHAROID, ECPG_ARRAY_NONE, stmt->lineno))
185 0 : return ECPG_ARRAY_ERROR;
186 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), NAMEOID, not_an_array_in_ecpg, stmt->lineno))
187 0 : return ECPG_ARRAY_ERROR;
188 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INT8OID, ECPG_ARRAY_NONE, stmt->lineno))
189 0 : return ECPG_ARRAY_ERROR;
190 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INT2OID, ECPG_ARRAY_NONE, stmt->lineno))
191 0 : return ECPG_ARRAY_ERROR;
192 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INT2VECTOROID, ECPG_ARRAY_VECTOR, stmt->lineno))
193 0 : return ECPG_ARRAY_ERROR;
194 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INT4OID, ECPG_ARRAY_NONE, stmt->lineno))
195 0 : return ECPG_ARRAY_ERROR;
196 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), REGPROCOID, ECPG_ARRAY_NONE, stmt->lineno))
197 0 : return ECPG_ARRAY_ERROR;
198 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TEXTOID, ECPG_ARRAY_NONE, stmt->lineno))
199 0 : return ECPG_ARRAY_ERROR;
200 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), OIDOID, ECPG_ARRAY_NONE, stmt->lineno))
201 0 : return ECPG_ARRAY_ERROR;
202 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TIDOID, ECPG_ARRAY_NONE, stmt->lineno))
203 0 : return ECPG_ARRAY_ERROR;
204 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), XIDOID, ECPG_ARRAY_NONE, stmt->lineno))
205 0 : return ECPG_ARRAY_ERROR;
206 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), CIDOID, ECPG_ARRAY_NONE, stmt->lineno))
207 0 : return ECPG_ARRAY_ERROR;
208 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), OIDVECTOROID, ECPG_ARRAY_VECTOR, stmt->lineno))
209 0 : return ECPG_ARRAY_ERROR;
210 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), POINTOID, ECPG_ARRAY_VECTOR, stmt->lineno))
211 0 : return ECPG_ARRAY_ERROR;
212 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), LSEGOID, ECPG_ARRAY_VECTOR, stmt->lineno))
213 0 : return ECPG_ARRAY_ERROR;
214 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), PATHOID, ECPG_ARRAY_NONE, stmt->lineno))
215 0 : return ECPG_ARRAY_ERROR;
216 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), BOXOID, ECPG_ARRAY_VECTOR, stmt->lineno))
217 0 : return ECPG_ARRAY_ERROR;
218 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), POLYGONOID, ECPG_ARRAY_NONE, stmt->lineno))
219 0 : return ECPG_ARRAY_ERROR;
220 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), LINEOID, ECPG_ARRAY_VECTOR, stmt->lineno))
221 0 : return ECPG_ARRAY_ERROR;
222 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), FLOAT4OID, ECPG_ARRAY_NONE, stmt->lineno))
223 0 : return ECPG_ARRAY_ERROR;
224 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), FLOAT8OID, ECPG_ARRAY_NONE, stmt->lineno))
225 0 : return ECPG_ARRAY_ERROR;
226 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), UNKNOWNOID, ECPG_ARRAY_NONE, stmt->lineno))
227 0 : return ECPG_ARRAY_ERROR;
228 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), CIRCLEOID, ECPG_ARRAY_NONE, stmt->lineno))
229 0 : return ECPG_ARRAY_ERROR;
230 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), MONEYOID, ECPG_ARRAY_NONE, stmt->lineno))
231 0 : return ECPG_ARRAY_ERROR;
232 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INETOID, ECPG_ARRAY_NONE, stmt->lineno))
233 0 : return ECPG_ARRAY_ERROR;
234 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), CIDROID, ECPG_ARRAY_NONE, stmt->lineno))
235 0 : return ECPG_ARRAY_ERROR;
236 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), BPCHAROID, ECPG_ARRAY_NONE, stmt->lineno))
237 0 : return ECPG_ARRAY_ERROR;
238 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), VARCHAROID, ECPG_ARRAY_NONE, stmt->lineno))
239 0 : return ECPG_ARRAY_ERROR;
240 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), DATEOID, ECPG_ARRAY_NONE, stmt->lineno))
241 0 : return ECPG_ARRAY_ERROR;
242 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TIMEOID, ECPG_ARRAY_NONE, stmt->lineno))
243 0 : return ECPG_ARRAY_ERROR;
244 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TIMESTAMPOID, ECPG_ARRAY_NONE, stmt->lineno))
245 0 : return ECPG_ARRAY_ERROR;
246 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TIMESTAMPTZOID, ECPG_ARRAY_NONE, stmt->lineno))
247 0 : return ECPG_ARRAY_ERROR;
248 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), INTERVALOID, ECPG_ARRAY_NONE, stmt->lineno))
249 0 : return ECPG_ARRAY_ERROR;
250 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), TIMETZOID, ECPG_ARRAY_NONE, stmt->lineno))
251 0 : return ECPG_ARRAY_ERROR;
252 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), BITOID, ECPG_ARRAY_NONE, stmt->lineno))
253 0 : return ECPG_ARRAY_ERROR;
254 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), VARBITOID, ECPG_ARRAY_NONE, stmt->lineno))
255 0 : return ECPG_ARRAY_ERROR;
256 260 : if (!ecpg_type_infocache_push(&(stmt->connection->cache_head), NUMERICOID, ECPG_ARRAY_NONE, stmt->lineno))
257 0 : return ECPG_ARRAY_ERROR;
258 : }
259 :
260 159812 : for (cache_entry = (stmt->connection->cache_head); cache_entry != NULL; cache_entry = cache_entry->next)
261 : {
262 159784 : if (cache_entry->oid == type)
263 4984 : return cache_entry->isarray;
264 : }
265 :
266 28 : array_query = (char *) ecpg_alloc(strlen("select typlen from pg_type where oid= and typelem<>0") + 11, stmt->lineno);
267 28 : if (array_query == NULL)
268 0 : return ECPG_ARRAY_ERROR;
269 :
270 28 : sprintf(array_query, "select typlen from pg_type where oid=%d and typelem<>0", type);
271 28 : query = PQexec(stmt->connection->connection, array_query);
272 28 : ecpg_free(array_query);
273 28 : if (!ecpg_check_PQresult(query, stmt->lineno, stmt->connection->connection, stmt->compat))
274 0 : return ECPG_ARRAY_ERROR;
275 28 : else if (PQresultStatus(query) == PGRES_TUPLES_OK)
276 : {
277 28 : if (PQntuples(query) == 0)
278 8 : isarray = ECPG_ARRAY_NONE;
279 : else
280 : {
281 20 : isarray = (atoi((char *) PQgetvalue(query, 0, 0)) == -1) ? ECPG_ARRAY_ARRAY : ECPG_ARRAY_VECTOR;
282 40 : if (ecpg_dynamic_type(type) == SQL3_CHARACTER ||
283 20 : ecpg_dynamic_type(type) == SQL3_CHARACTER_VARYING)
284 : {
285 : /*
286 : * arrays of character strings are not yet implemented
287 : */
288 0 : isarray = ECPG_ARRAY_NONE;
289 : }
290 : }
291 28 : PQclear(query);
292 : }
293 : else
294 0 : return ECPG_ARRAY_ERROR;
295 :
296 28 : ecpg_type_infocache_push(&(stmt->connection->cache_head), type, isarray, stmt->lineno);
297 28 : 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");
298 28 : return isarray;
299 : }
300 :
301 :
302 : bool
303 5012 : ecpg_store_result(const PGresult *results, int act_field,
304 : const struct statement *stmt, struct variable *var)
305 : {
306 : enum ARRAY_TYPE isarray;
307 : int act_tuple,
308 5012 : ntuples = PQntuples(results);
309 5012 : bool status = true;
310 :
311 5012 : if ((isarray = ecpg_is_type_an_array(PQftype(results, act_field), stmt, var)) == ECPG_ARRAY_ERROR)
312 : {
313 0 : ecpg_raise(stmt->lineno, ECPG_OUT_OF_MEMORY, ECPG_SQLSTATE_ECPG_OUT_OF_MEMORY, NULL);
314 0 : return false;
315 : }
316 :
317 5012 : if (isarray == ECPG_ARRAY_NONE)
318 : {
319 : /*
320 : * if we don't have enough space, we cannot read all tuples
321 : */
322 4988 : if ((var->arrsize > 0 && ntuples > var->arrsize) || (var->ind_arrsize > 0 && ntuples > var->ind_arrsize))
323 : {
324 0 : ecpg_log("ecpg_store_result on line %d: incorrect number of matches; %d don't fit into array of %ld\n",
325 : stmt->lineno, ntuples, var->arrsize);
326 0 : ecpg_raise(stmt->lineno, INFORMIX_MODE(stmt->compat) ? ECPG_INFORMIX_SUBSELECT_NOT_ONE : ECPG_TOO_MANY_MATCHES, ECPG_SQLSTATE_CARDINALITY_VIOLATION, NULL);
327 0 : return false;
328 : }
329 : }
330 : else
331 : {
332 : /*
333 : * since we read an array, the variable has to be an array too
334 : */
335 24 : if (var->arrsize == 0)
336 : {
337 0 : ecpg_raise(stmt->lineno, ECPG_NO_ARRAY, ECPG_SQLSTATE_DATATYPE_MISMATCH, NULL);
338 0 : return false;
339 : }
340 : }
341 :
342 : /*
343 : * allocate memory for NULL pointers
344 : */
345 5012 : if ((var->arrsize == 0 || var->varcharsize == 0) && var->value == NULL)
346 : {
347 3304 : int len = 0;
348 :
349 3304 : if (!PQfformat(results, act_field))
350 : {
351 3300 : switch (var->type)
352 : {
353 3284 : case ECPGt_char:
354 : case ECPGt_unsigned_char:
355 : case ECPGt_string:
356 3284 : if (!var->varcharsize && !var->arrsize)
357 : {
358 : /* special mode for handling char**foo=0 */
359 6500 : for (act_tuple = 0; act_tuple < ntuples; act_tuple++)
360 3272 : len += strlen(PQgetvalue(results, act_tuple, act_field)) + 1;
361 3228 : len *= var->offset; /* should be 1, but YMNK */
362 3228 : len += (ntuples + 1) * sizeof(char *);
363 : }
364 : else
365 : {
366 56 : var->varcharsize = 0;
367 : /* check strlen for each tuple */
368 112 : for (act_tuple = 0; act_tuple < ntuples; act_tuple++)
369 : {
370 56 : int slen = strlen(PQgetvalue(results, act_tuple, act_field)) + 1;
371 :
372 56 : if (slen > var->varcharsize)
373 56 : var->varcharsize = slen;
374 : }
375 56 : var->offset *= var->varcharsize;
376 56 : len = var->offset * ntuples;
377 : }
378 3284 : break;
379 0 : case ECPGt_varchar:
380 0 : len = ntuples * (var->varcharsize + sizeof(int));
381 0 : break;
382 16 : default:
383 16 : len = var->offset * ntuples;
384 16 : break;
385 : }
386 : }
387 : else
388 : {
389 8 : for (act_tuple = 0; act_tuple < ntuples; act_tuple++)
390 4 : len += PQgetlength(results, act_tuple, act_field);
391 : }
392 :
393 3304 : ecpg_log("ecpg_store_result on line %d: allocating memory for %d tuples\n", stmt->lineno, ntuples);
394 3304 : var->value = (char *) ecpg_auto_alloc(len, stmt->lineno);
395 3304 : if (!var->value)
396 0 : return false;
397 3304 : *((char **) var->pointer) = var->value;
398 : }
399 :
400 : /* allocate indicator variable if needed */
401 5012 : if ((var->ind_arrsize == 0 || var->ind_varcharsize == 0) && var->ind_value == NULL && var->ind_pointer != NULL)
402 : {
403 40 : int len = var->ind_offset * ntuples;
404 :
405 40 : var->ind_value = (char *) ecpg_auto_alloc(len, stmt->lineno);
406 40 : if (!var->ind_value)
407 0 : return false;
408 40 : *((char **) var->ind_pointer) = var->ind_value;
409 : }
410 :
411 : /* fill the variable with the tuple(s) */
412 5012 : if (!var->varcharsize && !var->arrsize &&
413 3228 : (var->type == ECPGt_char || var->type == ECPGt_unsigned_char || var->type == ECPGt_string))
414 3228 : {
415 : /* special mode for handling char**foo=0 */
416 :
417 : /* filling the array of (char*)s */
418 3228 : char **current_string = (char **) var->value;
419 :
420 : /* storing the data (after the last array element) */
421 3228 : char *current_data_location = (char *) ¤t_string[ntuples + 1];
422 :
423 6500 : for (act_tuple = 0; act_tuple < ntuples && status; act_tuple++)
424 : {
425 3272 : int len = strlen(PQgetvalue(results, act_tuple, act_field)) + 1;
426 :
427 3272 : if (!ecpg_get_data(results, act_tuple, act_field, stmt->lineno,
428 : var->type, var->ind_type, current_data_location,
429 3272 : var->ind_value, len, 0, var->ind_offset, isarray, stmt->compat, stmt->force_indicator))
430 0 : status = false;
431 : else
432 : {
433 3272 : *current_string = current_data_location;
434 3272 : current_data_location += len;
435 3272 : current_string++;
436 : }
437 : }
438 :
439 : /* terminate the list */
440 3228 : *current_string = NULL;
441 : }
442 : else
443 : {
444 3904 : for (act_tuple = 0; act_tuple < ntuples && status; act_tuple++)
445 : {
446 2120 : if (!ecpg_get_data(results, act_tuple, act_field, stmt->lineno,
447 2120 : var->type, var->ind_type, var->value,
448 2120 : var->ind_value, var->varcharsize, var->offset, var->ind_offset, isarray, stmt->compat, stmt->force_indicator))
449 24 : status = false;
450 : }
451 : }
452 5012 : return status;
453 : }
454 :
455 : static void
456 24 : sprintf_double_value(char *ptr, double value, const char *delim)
457 : {
458 24 : if (isnan(value))
459 4 : sprintf(ptr, "%s%s", "NaN", delim);
460 20 : else if (isinf(value))
461 : {
462 8 : if (value < 0)
463 4 : sprintf(ptr, "%s%s", "-Infinity", delim);
464 : else
465 4 : sprintf(ptr, "%s%s", "Infinity", delim);
466 : }
467 : else
468 12 : sprintf(ptr, "%.15g%s", value, delim);
469 24 : }
470 :
471 : static void
472 4 : sprintf_float_value(char *ptr, float value, const char *delim)
473 : {
474 4 : if (isnan(value))
475 0 : sprintf(ptr, "%s%s", "NaN", delim);
476 4 : else if (isinf(value))
477 : {
478 0 : if (value < 0)
479 0 : sprintf(ptr, "%s%s", "-Infinity", delim);
480 : else
481 0 : sprintf(ptr, "%s%s", "Infinity", delim);
482 : }
483 : else
484 4 : sprintf(ptr, "%.15g%s", value, delim);
485 4 : }
486 :
487 : static char *
488 0 : convert_bytea_to_string(char *from_data, int from_len, int lineno)
489 : {
490 : char *to_data;
491 0 : int to_len = ecpg_hex_enc_len(from_len) + 4 + 1; /* backslash + 'x' +
492 : * quote + quote */
493 :
494 0 : to_data = ecpg_alloc(to_len, lineno);
495 0 : if (!to_data)
496 0 : return NULL;
497 :
498 0 : strcpy(to_data, "'\\x");
499 0 : ecpg_hex_encode(from_data, from_len, to_data + 3);
500 0 : strcpy(to_data + 3 + ecpg_hex_enc_len(from_len), "\'");
501 :
502 0 : return to_data;
503 : }
504 :
505 : bool
506 7352 : ecpg_store_input(const int lineno, const bool force_indicator, const struct variable *var,
507 : char **tobeinserted_p, bool quote)
508 : {
509 7352 : char *mallocedval = NULL;
510 7352 : char *newcopy = NULL;
511 :
512 : /*
513 : * arrays are not possible unless the column is an array, too FIXME: we do
514 : * not know if the column is an array here array input to singleton column
515 : * will result in a runtime error
516 : */
517 :
518 : /*
519 : * Some special treatment is needed for records since we want their
520 : * contents to arrive in a comma-separated list on insert (I think).
521 : */
522 :
523 7352 : *tobeinserted_p = "";
524 :
525 : /* check for null value and set input buffer accordingly */
526 7352 : switch (var->ind_type)
527 : {
528 0 : case ECPGt_short:
529 : case ECPGt_unsigned_short:
530 0 : if (*(short *) var->ind_value < 0)
531 0 : *tobeinserted_p = NULL;
532 0 : break;
533 20 : case ECPGt_int:
534 : case ECPGt_unsigned_int:
535 20 : if (*(int *) var->ind_value < 0)
536 12 : *tobeinserted_p = NULL;
537 20 : break;
538 0 : case ECPGt_long:
539 : case ECPGt_unsigned_long:
540 0 : if (*(long *) var->ind_value < 0L)
541 0 : *tobeinserted_p = NULL;
542 0 : break;
543 0 : case ECPGt_long_long:
544 : case ECPGt_unsigned_long_long:
545 0 : if (*(long long int *) var->ind_value < (long long) 0)
546 0 : *tobeinserted_p = NULL;
547 0 : break;
548 7288 : case ECPGt_NO_INDICATOR:
549 7288 : if (force_indicator == false)
550 : {
551 68 : if (ECPGis_noind_null(var->type, var->value))
552 36 : *tobeinserted_p = NULL;
553 : }
554 7288 : break;
555 44 : default:
556 44 : break;
557 : }
558 7352 : if (*tobeinserted_p != NULL)
559 : {
560 7304 : int asize = var->arrsize ? var->arrsize : 1;
561 :
562 7304 : switch (var->type)
563 : {
564 : int element;
565 :
566 16 : case ECPGt_short:
567 16 : if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
568 0 : return false;
569 :
570 16 : if (asize > 1)
571 : {
572 8 : strcpy(mallocedval, "{");
573 :
574 88 : for (element = 0; element < asize; element++)
575 80 : sprintf(mallocedval + strlen(mallocedval), "%hd,", ((short *) var->value)[element]);
576 :
577 8 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
578 : }
579 : else
580 8 : sprintf(mallocedval, "%hd", *((short *) var->value));
581 :
582 16 : *tobeinserted_p = mallocedval;
583 16 : break;
584 :
585 5084 : case ECPGt_int:
586 5084 : if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
587 0 : return false;
588 :
589 5084 : if (asize > 1)
590 : {
591 0 : strcpy(mallocedval, "{");
592 :
593 0 : for (element = 0; element < asize; element++)
594 0 : sprintf(mallocedval + strlen(mallocedval), "%d,", ((int *) var->value)[element]);
595 :
596 0 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
597 : }
598 : else
599 5084 : sprintf(mallocedval, "%d", *((int *) var->value));
600 :
601 5084 : *tobeinserted_p = mallocedval;
602 5084 : break;
603 :
604 0 : case ECPGt_unsigned_short:
605 0 : if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
606 0 : return false;
607 :
608 0 : if (asize > 1)
609 : {
610 0 : strcpy(mallocedval, "{");
611 :
612 0 : for (element = 0; element < asize; element++)
613 0 : sprintf(mallocedval + strlen(mallocedval), "%hu,", ((unsigned short *) var->value)[element]);
614 :
615 0 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
616 : }
617 : else
618 0 : sprintf(mallocedval, "%hu", *((unsigned short *) var->value));
619 :
620 0 : *tobeinserted_p = mallocedval;
621 0 : break;
622 :
623 0 : case ECPGt_unsigned_int:
624 0 : if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
625 0 : return false;
626 :
627 0 : if (asize > 1)
628 : {
629 0 : strcpy(mallocedval, "{");
630 :
631 0 : for (element = 0; element < asize; element++)
632 0 : sprintf(mallocedval + strlen(mallocedval), "%u,", ((unsigned int *) var->value)[element]);
633 :
634 0 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
635 : }
636 : else
637 0 : sprintf(mallocedval, "%u", *((unsigned int *) var->value));
638 :
639 0 : *tobeinserted_p = mallocedval;
640 0 : break;
641 :
642 20 : case ECPGt_long:
643 20 : if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
644 0 : return false;
645 :
646 20 : if (asize > 1)
647 : {
648 0 : strcpy(mallocedval, "{");
649 :
650 0 : for (element = 0; element < asize; element++)
651 0 : sprintf(mallocedval + strlen(mallocedval), "%ld,", ((long *) var->value)[element]);
652 :
653 0 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
654 : }
655 : else
656 20 : sprintf(mallocedval, "%ld", *((long *) var->value));
657 :
658 20 : *tobeinserted_p = mallocedval;
659 20 : break;
660 :
661 0 : case ECPGt_unsigned_long:
662 0 : if (!(mallocedval = ecpg_alloc(asize * 20, lineno)))
663 0 : return false;
664 :
665 0 : if (asize > 1)
666 : {
667 0 : strcpy(mallocedval, "{");
668 :
669 0 : for (element = 0; element < asize; element++)
670 0 : sprintf(mallocedval + strlen(mallocedval), "%lu,", ((unsigned long *) var->value)[element]);
671 :
672 0 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
673 : }
674 : else
675 0 : sprintf(mallocedval, "%lu", *((unsigned long *) var->value));
676 :
677 0 : *tobeinserted_p = mallocedval;
678 0 : break;
679 :
680 0 : case ECPGt_long_long:
681 0 : if (!(mallocedval = ecpg_alloc(asize * 30, lineno)))
682 0 : return false;
683 :
684 0 : if (asize > 1)
685 : {
686 0 : strcpy(mallocedval, "{");
687 :
688 0 : for (element = 0; element < asize; element++)
689 0 : sprintf(mallocedval + strlen(mallocedval), "%lld,", ((long long int *) var->value)[element]);
690 :
691 0 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
692 : }
693 : else
694 0 : sprintf(mallocedval, "%lld", *((long long int *) var->value));
695 :
696 0 : *tobeinserted_p = mallocedval;
697 0 : break;
698 :
699 0 : case ECPGt_unsigned_long_long:
700 0 : if (!(mallocedval = ecpg_alloc(asize * 30, lineno)))
701 0 : return false;
702 :
703 0 : if (asize > 1)
704 : {
705 0 : strcpy(mallocedval, "{");
706 :
707 0 : for (element = 0; element < asize; element++)
708 0 : sprintf(mallocedval + strlen(mallocedval), "%llu,", ((unsigned long long int *) var->value)[element]);
709 :
710 0 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
711 : }
712 : else
713 0 : sprintf(mallocedval, "%llu", *((unsigned long long int *) var->value));
714 :
715 0 : *tobeinserted_p = mallocedval;
716 0 : break;
717 :
718 4 : case ECPGt_float:
719 4 : if (!(mallocedval = ecpg_alloc(asize * 25, lineno)))
720 0 : return false;
721 :
722 4 : if (asize > 1)
723 : {
724 0 : strcpy(mallocedval, "{");
725 :
726 0 : for (element = 0; element < asize; element++)
727 0 : sprintf_float_value(mallocedval + strlen(mallocedval), ((float *) var->value)[element], ",");
728 :
729 0 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
730 : }
731 : else
732 4 : sprintf_float_value(mallocedval, *((float *) var->value), "");
733 :
734 4 : *tobeinserted_p = mallocedval;
735 4 : break;
736 :
737 24 : case ECPGt_double:
738 24 : if (!(mallocedval = ecpg_alloc(asize * 25, lineno)))
739 0 : return false;
740 :
741 24 : if (asize > 1)
742 : {
743 0 : strcpy(mallocedval, "{");
744 :
745 0 : for (element = 0; element < asize; element++)
746 0 : sprintf_double_value(mallocedval + strlen(mallocedval), ((double *) var->value)[element], ",");
747 :
748 0 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
749 : }
750 : else
751 24 : sprintf_double_value(mallocedval, *((double *) var->value), "");
752 :
753 24 : *tobeinserted_p = mallocedval;
754 24 : break;
755 :
756 8 : case ECPGt_bool:
757 8 : if (!(mallocedval = ecpg_alloc(var->arrsize + sizeof("{}"), lineno)))
758 0 : return false;
759 :
760 8 : if (var->arrsize > 1)
761 : {
762 0 : strcpy(mallocedval, "{");
763 :
764 0 : for (element = 0; element < asize; element++)
765 0 : sprintf(mallocedval + strlen(mallocedval), "%c,", (((bool *) var->value)[element]) ? 't' : 'f');
766 :
767 0 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
768 : }
769 : else
770 : {
771 8 : if (var->offset == sizeof(char))
772 8 : sprintf(mallocedval, "%c", (*((char *) var->value)) ? 't' : 'f');
773 0 : else if (var->offset == sizeof(int))
774 0 : sprintf(mallocedval, "%c", (*((int *) var->value)) ? 't' : 'f');
775 : else
776 0 : ecpg_raise(lineno, ECPG_CONVERT_BOOL, ECPG_SQLSTATE_DATATYPE_MISMATCH, NULL);
777 : }
778 :
779 8 : *tobeinserted_p = mallocedval;
780 8 : break;
781 :
782 1828 : case ECPGt_char:
783 : case ECPGt_unsigned_char:
784 : case ECPGt_string:
785 : {
786 : /* set slen to string length if type is char * */
787 1828 : int slen = (var->varcharsize == 0) ? strlen((char *) var->value) : (unsigned int) var->varcharsize;
788 :
789 1828 : if (!(newcopy = ecpg_alloc(slen + 1, lineno)))
790 0 : return false;
791 :
792 1828 : strncpy(newcopy, (char *) var->value, slen);
793 1828 : newcopy[slen] = '\0';
794 :
795 1828 : mallocedval = quote_postgres(newcopy, quote, lineno);
796 1828 : if (!mallocedval)
797 : {
798 0 : ecpg_free(newcopy);
799 0 : return false;
800 : }
801 :
802 1828 : *tobeinserted_p = mallocedval;
803 : }
804 1828 : break;
805 148 : case ECPGt_const:
806 : case ECPGt_char_variable:
807 : {
808 148 : int slen = strlen((char *) var->value);
809 :
810 148 : if (!(mallocedval = ecpg_alloc(slen + 1, lineno)))
811 0 : return false;
812 :
813 148 : strncpy(mallocedval, (char *) var->value, slen);
814 148 : mallocedval[slen] = '\0';
815 :
816 148 : *tobeinserted_p = mallocedval;
817 : }
818 148 : break;
819 :
820 52 : case ECPGt_bytea:
821 : {
822 52 : struct ECPGgeneric_bytea *variable =
823 : (struct ECPGgeneric_bytea *) (var->value);
824 :
825 52 : if (!(mallocedval = (char *) ecpg_alloc(variable->len, lineno)))
826 0 : return false;
827 :
828 52 : memcpy(mallocedval, variable->arr, variable->len);
829 52 : *tobeinserted_p = mallocedval;
830 : }
831 52 : break;
832 :
833 36 : case ECPGt_varchar:
834 : {
835 36 : struct ECPGgeneric_varchar *variable =
836 : (struct ECPGgeneric_varchar *) (var->value);
837 :
838 36 : if (!(newcopy = (char *) ecpg_alloc(variable->len + 1, lineno)))
839 0 : return false;
840 :
841 36 : strncpy(newcopy, variable->arr, variable->len);
842 36 : newcopy[variable->len] = '\0';
843 :
844 36 : mallocedval = quote_postgres(newcopy, quote, lineno);
845 36 : if (!mallocedval)
846 : {
847 0 : ecpg_free(newcopy);
848 0 : return false;
849 : }
850 :
851 36 : *tobeinserted_p = mallocedval;
852 : }
853 36 : break;
854 :
855 28 : case ECPGt_decimal:
856 : case ECPGt_numeric:
857 : {
858 28 : char *str = NULL;
859 : int slen;
860 : numeric *nval;
861 :
862 28 : if (var->arrsize > 1)
863 12 : mallocedval = ecpg_strdup("{", lineno);
864 : else
865 16 : mallocedval = ecpg_strdup("", lineno);
866 :
867 28 : if (!mallocedval)
868 0 : return false;
869 :
870 164 : for (element = 0; element < asize; element++)
871 : {
872 : int result;
873 :
874 136 : nval = PGTYPESnumeric_new();
875 136 : if (!nval)
876 : {
877 0 : ecpg_free(mallocedval);
878 0 : return false;
879 : }
880 :
881 136 : if (var->type == ECPGt_numeric)
882 128 : result = PGTYPESnumeric_copy(&(((numeric *) (var->value))[element]), nval);
883 : else
884 8 : result = PGTYPESnumeric_from_decimal(&(((decimal *) (var->value))[element]), nval);
885 :
886 136 : if (result != 0)
887 : {
888 0 : PGTYPESnumeric_free(nval);
889 0 : ecpg_free(mallocedval);
890 0 : return false;
891 : }
892 :
893 136 : str = PGTYPESnumeric_to_asc(nval, nval->dscale);
894 136 : slen = strlen(str);
895 136 : PGTYPESnumeric_free(nval);
896 :
897 136 : if (!(newcopy = ecpg_realloc(mallocedval, strlen(mallocedval) + slen + 2, lineno)))
898 : {
899 0 : ecpg_free(mallocedval);
900 0 : ecpg_free(str);
901 0 : return false;
902 : }
903 136 : mallocedval = newcopy;
904 :
905 : /* also copy trailing '\0' */
906 136 : memcpy(mallocedval + strlen(mallocedval), str, slen + 1);
907 136 : if (var->arrsize > 1)
908 120 : strcpy(mallocedval + strlen(mallocedval), ",");
909 :
910 136 : ecpg_free(str);
911 : }
912 :
913 28 : if (var->arrsize > 1)
914 12 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
915 :
916 28 : *tobeinserted_p = mallocedval;
917 : }
918 28 : break;
919 :
920 12 : case ECPGt_interval:
921 : {
922 12 : char *str = NULL;
923 : int slen;
924 :
925 12 : if (var->arrsize > 1)
926 12 : mallocedval = ecpg_strdup("{", lineno);
927 : else
928 0 : mallocedval = ecpg_strdup("", lineno);
929 :
930 12 : if (!mallocedval)
931 0 : return false;
932 :
933 132 : for (element = 0; element < asize; element++)
934 : {
935 120 : str = quote_postgres(PGTYPESinterval_to_asc(&(((interval *) (var->value))[element])), quote, lineno);
936 120 : if (!str)
937 : {
938 0 : ecpg_free(mallocedval);
939 0 : return false;
940 : }
941 :
942 120 : slen = strlen(str);
943 :
944 120 : if (!(newcopy = ecpg_realloc(mallocedval, strlen(mallocedval) + slen + 2, lineno)))
945 : {
946 0 : ecpg_free(mallocedval);
947 0 : ecpg_free(str);
948 0 : return false;
949 : }
950 120 : mallocedval = newcopy;
951 :
952 : /* also copy trailing '\0' */
953 120 : memcpy(mallocedval + strlen(mallocedval), str, slen + 1);
954 120 : if (var->arrsize > 1)
955 120 : strcpy(mallocedval + strlen(mallocedval), ",");
956 :
957 120 : ecpg_free(str);
958 : }
959 :
960 12 : if (var->arrsize > 1)
961 12 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
962 :
963 12 : *tobeinserted_p = mallocedval;
964 : }
965 12 : break;
966 :
967 20 : case ECPGt_date:
968 : {
969 20 : char *str = NULL;
970 : int slen;
971 :
972 20 : if (var->arrsize > 1)
973 12 : mallocedval = ecpg_strdup("{", lineno);
974 : else
975 8 : mallocedval = ecpg_strdup("", lineno);
976 :
977 20 : if (!mallocedval)
978 0 : return false;
979 :
980 148 : for (element = 0; element < asize; element++)
981 : {
982 128 : str = quote_postgres(PGTYPESdate_to_asc(((date *) (var->value))[element]), quote, lineno);
983 128 : if (!str)
984 : {
985 0 : ecpg_free(mallocedval);
986 0 : return false;
987 : }
988 :
989 128 : slen = strlen(str);
990 :
991 128 : if (!(newcopy = ecpg_realloc(mallocedval, strlen(mallocedval) + slen + 2, lineno)))
992 : {
993 0 : ecpg_free(mallocedval);
994 0 : ecpg_free(str);
995 0 : return false;
996 : }
997 128 : mallocedval = newcopy;
998 :
999 : /* also copy trailing '\0' */
1000 128 : memcpy(mallocedval + strlen(mallocedval), str, slen + 1);
1001 128 : if (var->arrsize > 1)
1002 120 : strcpy(mallocedval + strlen(mallocedval), ",");
1003 :
1004 128 : ecpg_free(str);
1005 : }
1006 :
1007 20 : if (var->arrsize > 1)
1008 12 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
1009 :
1010 20 : *tobeinserted_p = mallocedval;
1011 : }
1012 20 : break;
1013 :
1014 24 : case ECPGt_timestamp:
1015 : {
1016 24 : char *str = NULL;
1017 : int slen;
1018 :
1019 24 : if (var->arrsize > 1)
1020 12 : mallocedval = ecpg_strdup("{", lineno);
1021 : else
1022 12 : mallocedval = ecpg_strdup("", lineno);
1023 :
1024 24 : if (!mallocedval)
1025 0 : return false;
1026 :
1027 156 : for (element = 0; element < asize; element++)
1028 : {
1029 132 : str = quote_postgres(PGTYPEStimestamp_to_asc(((timestamp *) (var->value))[element]), quote, lineno);
1030 132 : if (!str)
1031 : {
1032 0 : ecpg_free(mallocedval);
1033 0 : return false;
1034 : }
1035 :
1036 132 : slen = strlen(str);
1037 :
1038 132 : if (!(newcopy = ecpg_realloc(mallocedval, strlen(mallocedval) + slen + 2, lineno)))
1039 : {
1040 0 : ecpg_free(mallocedval);
1041 0 : ecpg_free(str);
1042 0 : return false;
1043 : }
1044 132 : mallocedval = newcopy;
1045 :
1046 : /* also copy trailing '\0' */
1047 132 : memcpy(mallocedval + strlen(mallocedval), str, slen + 1);
1048 132 : if (var->arrsize > 1)
1049 120 : strcpy(mallocedval + strlen(mallocedval), ",");
1050 :
1051 132 : ecpg_free(str);
1052 : }
1053 :
1054 24 : if (var->arrsize > 1)
1055 12 : strcpy(mallocedval + strlen(mallocedval) - 1, "}");
1056 :
1057 24 : *tobeinserted_p = mallocedval;
1058 : }
1059 24 : break;
1060 :
1061 0 : case ECPGt_descriptor:
1062 : case ECPGt_sqlda:
1063 0 : break;
1064 :
1065 0 : default:
1066 : /* Not implemented yet */
1067 0 : ecpg_raise(lineno, ECPG_UNSUPPORTED, ECPG_SQLSTATE_ECPG_INTERNAL_ERROR, ecpg_type_name(var->type));
1068 0 : return false;
1069 : break;
1070 : }
1071 48 : }
1072 7352 : return true;
1073 : }
1074 :
1075 : static void
1076 6928 : print_param_value(char *value, int len, int is_binary, int lineno, int nth)
1077 : {
1078 : char *value_s;
1079 6928 : bool malloced = false;
1080 :
1081 6928 : if (value == NULL)
1082 48 : value_s = "null";
1083 6880 : else if (!is_binary)
1084 6828 : value_s = value;
1085 : else
1086 : {
1087 52 : value_s = ecpg_alloc(ecpg_hex_enc_len(len) + 1, lineno);
1088 52 : if (value_s != NULL)
1089 : {
1090 52 : ecpg_hex_encode(value, len, value_s);
1091 52 : value_s[ecpg_hex_enc_len(len)] = '\0';
1092 52 : malloced = true;
1093 : }
1094 : else
1095 0 : value_s = "no memory for logging of parameter";
1096 : }
1097 :
1098 6928 : ecpg_log("ecpg_free_params on line %d: parameter %d = %s\n",
1099 : lineno, nth, value_s);
1100 :
1101 6928 : if (malloced)
1102 52 : ecpg_free(value_s);
1103 6928 : }
1104 :
1105 : void
1106 10618 : ecpg_free_params(struct statement *stmt, bool print)
1107 : {
1108 : int n;
1109 :
1110 17546 : for (n = 0; n < stmt->nparams; n++)
1111 : {
1112 6928 : if (print)
1113 6928 : print_param_value(stmt->paramvalues[n], stmt->paramlengths[n],
1114 6928 : stmt->paramformats[n], stmt->lineno, n + 1);
1115 6928 : ecpg_free(stmt->paramvalues[n]);
1116 : }
1117 10618 : ecpg_free(stmt->paramvalues);
1118 10618 : ecpg_free(stmt->paramlengths);
1119 10618 : ecpg_free(stmt->paramformats);
1120 10618 : stmt->paramvalues = NULL;
1121 10618 : stmt->paramlengths = NULL;
1122 10618 : stmt->paramformats = NULL;
1123 10618 : stmt->nparams = 0;
1124 10618 : }
1125 :
1126 : static bool
1127 388 : insert_tobeinserted(int position, int ph_len, struct statement *stmt, char *tobeinserted)
1128 : {
1129 : char *newcopy;
1130 :
1131 388 : if (!(newcopy = (char *) ecpg_alloc(strlen(stmt->command)
1132 388 : + strlen(tobeinserted)
1133 388 : + 1, stmt->lineno)))
1134 : {
1135 0 : ecpg_free(tobeinserted);
1136 0 : return false;
1137 : }
1138 :
1139 388 : strcpy(newcopy, stmt->command);
1140 388 : strcpy(newcopy + position - 1, tobeinserted);
1141 :
1142 : /*
1143 : * The strange thing in the second argument is the rest of the string from
1144 : * the old string
1145 : */
1146 388 : strcat(newcopy,
1147 388 : stmt->command
1148 : + position
1149 388 : + ph_len - 1);
1150 :
1151 388 : ecpg_free(stmt->command);
1152 388 : stmt->command = newcopy;
1153 :
1154 388 : ecpg_free(tobeinserted);
1155 388 : return true;
1156 : }
1157 :
1158 : static bool
1159 52 : store_input_from_desc(struct statement *stmt, struct descriptor_item *desc_item,
1160 : char **tobeinserted)
1161 : {
1162 : struct variable var;
1163 :
1164 : /*
1165 : * In case of binary data, only allocate memory and memcpy because binary
1166 : * data have been already stored into desc_item->data with
1167 : * ecpg_store_input() at ECPGset_desc().
1168 : */
1169 52 : if (desc_item->is_binary)
1170 : {
1171 8 : if (!(*tobeinserted = ecpg_alloc(desc_item->data_len, stmt->lineno)))
1172 0 : return false;
1173 8 : memcpy(*tobeinserted, desc_item->data, desc_item->data_len);
1174 8 : return true;
1175 : }
1176 :
1177 44 : var.type = ECPGt_char;
1178 44 : var.varcharsize = strlen(desc_item->data);
1179 44 : var.value = desc_item->data;
1180 44 : var.pointer = &(desc_item->data);
1181 44 : var.arrsize = 1;
1182 44 : var.offset = 0;
1183 :
1184 44 : if (!desc_item->indicator)
1185 : {
1186 36 : var.ind_type = ECPGt_NO_INDICATOR;
1187 36 : var.ind_value = var.ind_pointer = NULL;
1188 36 : var.ind_varcharsize = var.ind_arrsize = var.ind_offset = 0;
1189 : }
1190 : else
1191 : {
1192 8 : var.ind_type = ECPGt_int;
1193 8 : var.ind_value = &(desc_item->indicator);
1194 8 : var.ind_pointer = &(var.ind_value);
1195 8 : var.ind_varcharsize = var.ind_arrsize = 1;
1196 8 : var.ind_offset = 0;
1197 : }
1198 :
1199 44 : if (!ecpg_store_input(stmt->lineno, stmt->force_indicator, &var, tobeinserted, false))
1200 0 : return false;
1201 :
1202 44 : return true;
1203 : }
1204 :
1205 : /*
1206 : * ecpg_build_params
1207 : * Build statement parameters
1208 : *
1209 : * The input values are taken from user variables, and the results are stored
1210 : * in arrays which can be used by PQexecParams().
1211 : */
1212 : bool
1213 10618 : ecpg_build_params(struct statement *stmt)
1214 : {
1215 : struct variable *var;
1216 10618 : int desc_counter = 0;
1217 10618 : int position = 0;
1218 : const char *value;
1219 10618 : bool std_strings = false;
1220 :
1221 : /* Get standard_conforming_strings setting. */
1222 10618 : value = PQparameterStatus(stmt->connection->connection, "standard_conforming_strings");
1223 10618 : if (value && strcmp(value, "on") == 0)
1224 10582 : std_strings = true;
1225 :
1226 : /*
1227 : * If the type is one of the fill in types then we take the argument and
1228 : * enter it to our parameter array at the first position. Then if there
1229 : * are any more fill in types we add more parameters.
1230 : */
1231 10618 : var = stmt->inlist;
1232 17934 : while (var)
1233 : {
1234 : char *tobeinserted;
1235 7316 : int counter = 1;
1236 : bool binary_format;
1237 : int binary_length;
1238 :
1239 :
1240 7316 : tobeinserted = NULL;
1241 7316 : binary_length = 0;
1242 7316 : binary_format = false;
1243 :
1244 : /*
1245 : * A descriptor is a special case since it contains many variables but
1246 : * is listed only once.
1247 : */
1248 7316 : if (var->type == ECPGt_descriptor)
1249 : {
1250 : /*
1251 : * We create an additional variable list here, so the same logic
1252 : * applies.
1253 : */
1254 : struct descriptor *desc;
1255 : struct descriptor_item *desc_item;
1256 :
1257 52 : desc = ecpg_find_desc(stmt->lineno, var->pointer);
1258 52 : if (desc == NULL)
1259 0 : return false;
1260 :
1261 52 : desc_counter++;
1262 80 : for (desc_item = desc->items; desc_item; desc_item = desc_item->next)
1263 : {
1264 80 : if (desc_item->num != desc_counter)
1265 28 : continue;
1266 :
1267 52 : if (!store_input_from_desc(stmt, desc_item, &tobeinserted))
1268 0 : return false;
1269 :
1270 52 : if (desc_item->is_binary)
1271 : {
1272 8 : binary_length = desc_item->data_len;
1273 8 : binary_format = true;
1274 : }
1275 52 : break;
1276 : }
1277 52 : if (desc->count == desc_counter)
1278 28 : desc_counter = 0;
1279 : }
1280 7264 : else if (var->type == ECPGt_sqlda)
1281 : {
1282 16 : if (INFORMIX_MODE(stmt->compat))
1283 8 : {
1284 8 : struct sqlda_compat *sqlda = *(struct sqlda_compat **) var->pointer;
1285 : struct variable desc_inlist;
1286 : int i;
1287 :
1288 8 : if (sqlda == NULL)
1289 0 : return false;
1290 :
1291 8 : desc_counter++;
1292 8 : for (i = 0; i < sqlda->sqld; i++)
1293 : {
1294 8 : if (i + 1 == desc_counter)
1295 : {
1296 8 : desc_inlist.type = sqlda->sqlvar[i].sqltype;
1297 8 : desc_inlist.value = sqlda->sqlvar[i].sqldata;
1298 8 : desc_inlist.pointer = &(sqlda->sqlvar[i].sqldata);
1299 8 : switch (desc_inlist.type)
1300 : {
1301 0 : case ECPGt_char:
1302 : case ECPGt_varchar:
1303 0 : desc_inlist.varcharsize = strlen(sqlda->sqlvar[i].sqldata);
1304 0 : break;
1305 8 : default:
1306 8 : desc_inlist.varcharsize = 0;
1307 8 : break;
1308 : }
1309 8 : desc_inlist.arrsize = 1;
1310 8 : desc_inlist.offset = 0;
1311 8 : if (sqlda->sqlvar[i].sqlind)
1312 : {
1313 0 : desc_inlist.ind_type = ECPGt_short;
1314 : /* ECPG expects indicator value < 0 */
1315 0 : if (*(sqlda->sqlvar[i].sqlind))
1316 0 : *(sqlda->sqlvar[i].sqlind) = -1;
1317 0 : desc_inlist.ind_value = sqlda->sqlvar[i].sqlind;
1318 0 : desc_inlist.ind_pointer = &(sqlda->sqlvar[i].sqlind);
1319 0 : desc_inlist.ind_varcharsize = desc_inlist.ind_arrsize = 1;
1320 0 : desc_inlist.ind_offset = 0;
1321 : }
1322 : else
1323 : {
1324 8 : desc_inlist.ind_type = ECPGt_NO_INDICATOR;
1325 8 : desc_inlist.ind_value = desc_inlist.ind_pointer = NULL;
1326 8 : desc_inlist.ind_varcharsize = desc_inlist.ind_arrsize = desc_inlist.ind_offset = 0;
1327 : }
1328 8 : if (!ecpg_store_input(stmt->lineno, stmt->force_indicator, &desc_inlist, &tobeinserted, false))
1329 0 : return false;
1330 :
1331 8 : break;
1332 : }
1333 : }
1334 8 : if (sqlda->sqld == desc_counter)
1335 8 : desc_counter = 0;
1336 : }
1337 : else
1338 : {
1339 8 : struct sqlda_struct *sqlda = *(struct sqlda_struct **) var->pointer;
1340 : struct variable desc_inlist;
1341 : int i;
1342 :
1343 8 : if (sqlda == NULL)
1344 0 : return false;
1345 :
1346 8 : desc_counter++;
1347 8 : for (i = 0; i < sqlda->sqln; i++)
1348 : {
1349 8 : if (i + 1 == desc_counter)
1350 : {
1351 8 : desc_inlist.type = sqlda->sqlvar[i].sqltype;
1352 8 : desc_inlist.value = sqlda->sqlvar[i].sqldata;
1353 8 : desc_inlist.pointer = &(sqlda->sqlvar[i].sqldata);
1354 8 : switch (desc_inlist.type)
1355 : {
1356 0 : case ECPGt_char:
1357 : case ECPGt_varchar:
1358 0 : desc_inlist.varcharsize = strlen(sqlda->sqlvar[i].sqldata);
1359 0 : break;
1360 8 : default:
1361 8 : desc_inlist.varcharsize = 0;
1362 8 : break;
1363 : }
1364 8 : desc_inlist.arrsize = 1;
1365 8 : desc_inlist.offset = 0;
1366 8 : if (sqlda->sqlvar[i].sqlind)
1367 : {
1368 0 : desc_inlist.ind_type = ECPGt_short;
1369 : /* ECPG expects indicator value < 0 */
1370 0 : if (*(sqlda->sqlvar[i].sqlind))
1371 0 : *(sqlda->sqlvar[i].sqlind) = -1;
1372 0 : desc_inlist.ind_value = sqlda->sqlvar[i].sqlind;
1373 0 : desc_inlist.ind_pointer = &(sqlda->sqlvar[i].sqlind);
1374 0 : desc_inlist.ind_varcharsize = desc_inlist.ind_arrsize = 1;
1375 0 : desc_inlist.ind_offset = 0;
1376 : }
1377 : else
1378 : {
1379 8 : desc_inlist.ind_type = ECPGt_NO_INDICATOR;
1380 8 : desc_inlist.ind_value = desc_inlist.ind_pointer = NULL;
1381 8 : desc_inlist.ind_varcharsize = desc_inlist.ind_arrsize = desc_inlist.ind_offset = 0;
1382 : }
1383 8 : if (!ecpg_store_input(stmt->lineno, stmt->force_indicator, &desc_inlist, &tobeinserted, false))
1384 0 : return false;
1385 :
1386 8 : break;
1387 : }
1388 : }
1389 8 : if (sqlda->sqln == desc_counter)
1390 8 : desc_counter = 0;
1391 : }
1392 : }
1393 : else
1394 : {
1395 7248 : if (!ecpg_store_input(stmt->lineno, stmt->force_indicator, var, &tobeinserted, false))
1396 0 : return false;
1397 :
1398 7248 : if (var->type == ECPGt_bytea)
1399 : {
1400 44 : binary_length = ((struct ECPGgeneric_bytea *) (var->value))->len;
1401 44 : binary_format = true;
1402 : }
1403 : }
1404 :
1405 : /*
1406 : * now tobeinserted points to an area that contains the next
1407 : * parameter; now find the position in the string where it belongs
1408 : */
1409 7316 : if ((position = next_insert(stmt->command, position, stmt->questionmarks, std_strings) + 1) == 0)
1410 : {
1411 : /*
1412 : * We have an argument but we don't have the matched up
1413 : * placeholder in the string
1414 : */
1415 0 : ecpg_raise(stmt->lineno, ECPG_TOO_MANY_ARGUMENTS,
1416 : ECPG_SQLSTATE_USING_CLAUSE_DOES_NOT_MATCH_PARAMETERS,
1417 : NULL);
1418 0 : ecpg_free_params(stmt, false);
1419 0 : ecpg_free(tobeinserted);
1420 0 : return false;
1421 : }
1422 :
1423 : /*
1424 : * if var->type=ECPGt_char_variable we have a dynamic cursor we have
1425 : * to simulate a dynamic cursor because there is no backend
1426 : * functionality for it
1427 : */
1428 7316 : if (var->type == ECPGt_char_variable)
1429 : {
1430 84 : int ph_len = (stmt->command[position] == '?') ? strlen("?") : strlen("$1");
1431 :
1432 84 : if (!insert_tobeinserted(position, ph_len, stmt, tobeinserted))
1433 : {
1434 0 : ecpg_free_params(stmt, false);
1435 0 : return false;
1436 : }
1437 84 : tobeinserted = NULL;
1438 : }
1439 :
1440 : /*
1441 : * if the placeholder is '$0' we have to replace it on the client side
1442 : * this is for places we want to support variables at that are not
1443 : * supported in the backend
1444 : */
1445 7232 : else if (stmt->command[position] == '0')
1446 : {
1447 248 : if (stmt->statement_type == ECPGst_prepare ||
1448 228 : stmt->statement_type == ECPGst_exec_with_exprlist)
1449 : {
1450 : /* Need to double-quote the inserted statement name. */
1451 56 : char *str = ecpg_alloc(strlen(tobeinserted) + 2 + 1,
1452 : stmt->lineno);
1453 :
1454 56 : if (!str)
1455 : {
1456 0 : ecpg_free(tobeinserted);
1457 0 : ecpg_free_params(stmt, false);
1458 0 : return false;
1459 : }
1460 56 : sprintf(str, "\"%s\"", tobeinserted);
1461 56 : ecpg_free(tobeinserted);
1462 56 : tobeinserted = str;
1463 : }
1464 :
1465 248 : if (!insert_tobeinserted(position, 2, stmt, tobeinserted))
1466 : {
1467 0 : ecpg_free_params(stmt, false);
1468 0 : return false;
1469 : }
1470 248 : tobeinserted = NULL;
1471 : }
1472 6984 : else if (stmt->statement_type == ECPGst_exec_with_exprlist)
1473 : {
1474 56 : if (binary_format)
1475 : {
1476 0 : char *p = convert_bytea_to_string(tobeinserted,
1477 : binary_length,
1478 : stmt->lineno);
1479 :
1480 0 : ecpg_free(tobeinserted);
1481 0 : if (!p)
1482 : {
1483 0 : ecpg_free_params(stmt, false);
1484 0 : return false;
1485 : }
1486 0 : tobeinserted = p;
1487 : }
1488 :
1489 56 : if (!insert_tobeinserted(position, 2, stmt, tobeinserted))
1490 : {
1491 0 : ecpg_free_params(stmt, false);
1492 0 : return false;
1493 : }
1494 56 : tobeinserted = NULL;
1495 : }
1496 : else
1497 : {
1498 6928 : bool realloc_failed = false;
1499 : char **newparamvalues;
1500 : int *newparamlengths;
1501 : int *newparamformats;
1502 :
1503 : /* enlarge all the param arrays */
1504 6928 : if ((newparamvalues = (char **) ecpg_realloc(stmt->paramvalues, sizeof(char *) * (stmt->nparams + 1), stmt->lineno)))
1505 6928 : stmt->paramvalues = newparamvalues;
1506 : else
1507 0 : realloc_failed = true;
1508 :
1509 6928 : if ((newparamlengths = (int *) ecpg_realloc(stmt->paramlengths, sizeof(int) * (stmt->nparams + 1), stmt->lineno)))
1510 6928 : stmt->paramlengths = newparamlengths;
1511 : else
1512 0 : realloc_failed = true;
1513 :
1514 6928 : if ((newparamformats = (int *) ecpg_realloc(stmt->paramformats, sizeof(int) * (stmt->nparams + 1), stmt->lineno)))
1515 6928 : stmt->paramformats = newparamformats;
1516 : else
1517 0 : realloc_failed = true;
1518 :
1519 6928 : if (realloc_failed)
1520 : {
1521 0 : ecpg_free_params(stmt, false);
1522 0 : ecpg_free(tobeinserted);
1523 0 : return false;
1524 : }
1525 :
1526 : /* only now can we assign ownership of "tobeinserted" to stmt */
1527 6928 : stmt->paramvalues[stmt->nparams] = tobeinserted;
1528 6928 : stmt->paramlengths[stmt->nparams] = binary_length;
1529 6928 : stmt->paramformats[stmt->nparams] = (binary_format ? 1 : 0);
1530 6928 : stmt->nparams++;
1531 :
1532 : /* let's see if this was an old style placeholder */
1533 6928 : if (stmt->command[position] == '?')
1534 : {
1535 : /* yes, replace with new style */
1536 0 : int buffersize = sizeof(int) * CHAR_BIT * 10 / 3; /* a rough guess of the
1537 : * size we need */
1538 :
1539 0 : if (!(tobeinserted = (char *) ecpg_alloc(buffersize, stmt->lineno)))
1540 : {
1541 0 : ecpg_free_params(stmt, false);
1542 0 : return false;
1543 : }
1544 :
1545 0 : snprintf(tobeinserted, buffersize, "$%d", counter++);
1546 :
1547 0 : if (!insert_tobeinserted(position, 2, stmt, tobeinserted))
1548 : {
1549 0 : ecpg_free_params(stmt, false);
1550 0 : return false;
1551 : }
1552 0 : tobeinserted = NULL;
1553 : }
1554 : }
1555 :
1556 7316 : if (desc_counter == 0)
1557 7292 : var = var->next;
1558 : }
1559 :
1560 : /*
1561 : * Check if there are unmatched things left. PREPARE AS has no parameter.
1562 : * Check other statement.
1563 : */
1564 21216 : if (stmt->statement_type != ECPGst_prepare &&
1565 10598 : next_insert(stmt->command, position, stmt->questionmarks, std_strings) >= 0)
1566 : {
1567 0 : ecpg_raise(stmt->lineno, ECPG_TOO_FEW_ARGUMENTS,
1568 : ECPG_SQLSTATE_USING_CLAUSE_DOES_NOT_MATCH_PARAMETERS, NULL);
1569 0 : ecpg_free_params(stmt, false);
1570 0 : return false;
1571 : }
1572 :
1573 10618 : return true;
1574 : }
1575 :
1576 : /*
1577 : * ecpg_autostart_transaction
1578 : * If we are in non-autocommit mode, automatically start a transaction.
1579 : */
1580 : bool
1581 10618 : ecpg_autostart_transaction(struct statement *stmt)
1582 : {
1583 10618 : if (PQtransactionStatus(stmt->connection->connection) == PQTRANS_IDLE && !stmt->connection->autocommit)
1584 : {
1585 370 : stmt->results = PQexec(stmt->connection->connection, "begin transaction");
1586 370 : if (!ecpg_check_PQresult(stmt->results, stmt->lineno, stmt->connection->connection, stmt->compat))
1587 : {
1588 0 : ecpg_free_params(stmt, false);
1589 0 : return false;
1590 : }
1591 370 : PQclear(stmt->results);
1592 370 : stmt->results = NULL;
1593 : }
1594 10618 : return true;
1595 : }
1596 :
1597 : /*
1598 : * ecpg_execute
1599 : * Execute the SQL statement.
1600 : */
1601 : bool
1602 10618 : ecpg_execute(struct statement *stmt)
1603 : {
1604 10618 : 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);
1605 10618 : if (stmt->statement_type == ECPGst_execute)
1606 : {
1607 6656 : stmt->results = PQexecPrepared(stmt->connection->connection,
1608 3328 : stmt->name,
1609 : stmt->nparams,
1610 3328 : (const char *const *) stmt->paramvalues,
1611 3328 : (const int *) stmt->paramlengths,
1612 3328 : (const int *) stmt->paramformats,
1613 : 0);
1614 3328 : ecpg_log("ecpg_execute on line %d: using PQexecPrepared for \"%s\"\n", stmt->lineno, stmt->command);
1615 : }
1616 : else
1617 : {
1618 7290 : if (stmt->nparams == 0)
1619 : {
1620 5474 : stmt->results = PQexec(stmt->connection->connection, stmt->command);
1621 5474 : ecpg_log("ecpg_execute on line %d: using PQexec\n", stmt->lineno);
1622 : }
1623 : else
1624 : {
1625 3632 : stmt->results = PQexecParams(stmt->connection->connection,
1626 1816 : stmt->command, stmt->nparams, NULL,
1627 1816 : (const char *const *) stmt->paramvalues,
1628 1816 : (const int *) stmt->paramlengths,
1629 1816 : (const int *) stmt->paramformats,
1630 : 0);
1631 :
1632 1816 : ecpg_log("ecpg_execute on line %d: using PQexecParams\n", stmt->lineno);
1633 : }
1634 :
1635 7290 : if (stmt->statement_type == ECPGst_prepare)
1636 : {
1637 20 : if (!ecpg_register_prepared_stmt(stmt))
1638 : {
1639 0 : ecpg_free_params(stmt, true);
1640 0 : return false;
1641 : }
1642 : }
1643 : }
1644 :
1645 10618 : ecpg_free_params(stmt, true);
1646 :
1647 10618 : if (!ecpg_check_PQresult(stmt->results, stmt->lineno, stmt->connection->connection, stmt->compat))
1648 52 : return false;
1649 :
1650 10566 : return true;
1651 : }
1652 :
1653 : /*-------
1654 : * ecpg_process_output
1655 : *
1656 : * Process the statement result and store it into application variables. This
1657 : * function can be called repeatedly during the same statement in case cursor
1658 : * readahead is used and the application does FETCH N which overflows the
1659 : * readahead window.
1660 : *
1661 : * Parameters
1662 : * stmt statement structure holding the PGresult and
1663 : * the list of output variables
1664 : * clear_result
1665 : * PQclear() the result upon returning from this function
1666 : *
1667 : * Returns success as boolean. Also an SQL error is raised in case of failure.
1668 : *-------
1669 : */
1670 : bool
1671 10566 : ecpg_process_output(struct statement *stmt, bool clear_result)
1672 : {
1673 : struct variable *var;
1674 10566 : bool status = false;
1675 : char *cmdstat;
1676 : PGnotify *notify;
1677 10566 : struct sqlca_t *sqlca = ECPGget_sqlca();
1678 : int nfields,
1679 : ntuples,
1680 : act_field;
1681 :
1682 10566 : if (sqlca == NULL)
1683 : {
1684 0 : ecpg_raise(stmt->lineno, ECPG_OUT_OF_MEMORY,
1685 : ECPG_SQLSTATE_ECPG_OUT_OF_MEMORY, NULL);
1686 0 : return false;
1687 : }
1688 :
1689 10566 : var = stmt->outlist;
1690 10566 : switch (PQresultStatus(stmt->results))
1691 : {
1692 4192 : case PGRES_TUPLES_OK:
1693 4192 : nfields = PQnfields(stmt->results);
1694 4192 : sqlca->sqlerrd[2] = ntuples = PQntuples(stmt->results);
1695 :
1696 4192 : ecpg_log("ecpg_process_output on line %d: correctly got %d tuples with %d fields\n", stmt->lineno, ntuples, nfields);
1697 4192 : status = true;
1698 :
1699 4192 : if (ntuples < 1)
1700 : {
1701 80 : if (ntuples)
1702 0 : ecpg_log("ecpg_process_output on line %d: incorrect number of matches (%d)\n",
1703 : stmt->lineno, ntuples);
1704 80 : ecpg_raise(stmt->lineno, ECPG_NOT_FOUND, ECPG_SQLSTATE_NO_DATA, NULL);
1705 80 : status = false;
1706 80 : break;
1707 : }
1708 :
1709 4112 : if (var != NULL && var->type == ECPGt_descriptor)
1710 28 : {
1711 28 : struct descriptor *desc = ecpg_find_desc(stmt->lineno, var->pointer);
1712 :
1713 28 : if (desc == NULL)
1714 0 : status = false;
1715 : else
1716 : {
1717 28 : PQclear(desc->result);
1718 28 : desc->result = stmt->results;
1719 28 : clear_result = false;
1720 28 : ecpg_log("ecpg_process_output on line %d: putting result (%d tuples) into descriptor %s\n",
1721 28 : stmt->lineno, PQntuples(stmt->results), (const char *) var->pointer);
1722 : }
1723 28 : var = var->next;
1724 : }
1725 4084 : else if (var != NULL && var->type == ECPGt_sqlda)
1726 : {
1727 68 : if (INFORMIX_MODE(stmt->compat))
1728 32 : {
1729 32 : struct sqlda_compat **_sqlda = (struct sqlda_compat **) var->pointer;
1730 32 : struct sqlda_compat *sqlda = *_sqlda;
1731 : struct sqlda_compat *sqlda_new;
1732 : int i;
1733 :
1734 : /*
1735 : * If we are passed in a previously existing sqlda (chain)
1736 : * then free it.
1737 : */
1738 48 : while (sqlda)
1739 : {
1740 16 : sqlda_new = sqlda->desc_next;
1741 16 : free(sqlda);
1742 16 : sqlda = sqlda_new;
1743 : }
1744 32 : *_sqlda = sqlda = sqlda_new = NULL;
1745 64 : for (i = ntuples - 1; i >= 0; i--)
1746 : {
1747 : /*
1748 : * Build a new sqlda structure. Note that only
1749 : * fetching 1 record is supported
1750 : */
1751 32 : sqlda_new = ecpg_build_compat_sqlda(stmt->lineno, stmt->results, i, stmt->compat);
1752 :
1753 32 : if (!sqlda_new)
1754 : {
1755 : /* cleanup all SQLDAs we created up */
1756 0 : while (sqlda)
1757 : {
1758 0 : sqlda_new = sqlda->desc_next;
1759 0 : free(sqlda);
1760 0 : sqlda = sqlda_new;
1761 : }
1762 0 : *_sqlda = NULL;
1763 :
1764 0 : ecpg_log("ecpg_process_output on line %d: out of memory allocating a new sqlda\n", stmt->lineno);
1765 0 : status = false;
1766 0 : break;
1767 : }
1768 : else
1769 : {
1770 32 : ecpg_log("ecpg_process_output on line %d: new sqlda was built\n", stmt->lineno);
1771 :
1772 32 : *_sqlda = sqlda_new;
1773 :
1774 32 : ecpg_set_compat_sqlda(stmt->lineno, _sqlda, stmt->results, i, stmt->compat);
1775 32 : ecpg_log("ecpg_process_output on line %d: putting result (1 tuple %d fields) into sqlda descriptor\n",
1776 32 : stmt->lineno, PQnfields(stmt->results));
1777 :
1778 32 : sqlda_new->desc_next = sqlda;
1779 32 : sqlda = sqlda_new;
1780 : }
1781 : }
1782 : }
1783 : else
1784 : {
1785 36 : struct sqlda_struct **_sqlda = (struct sqlda_struct **) var->pointer;
1786 36 : struct sqlda_struct *sqlda = *_sqlda;
1787 : struct sqlda_struct *sqlda_new;
1788 : int i;
1789 :
1790 : /*
1791 : * If we are passed in a previously existing sqlda (chain)
1792 : * then free it.
1793 : */
1794 52 : while (sqlda)
1795 : {
1796 16 : sqlda_new = sqlda->desc_next;
1797 16 : free(sqlda);
1798 16 : sqlda = sqlda_new;
1799 : }
1800 36 : *_sqlda = sqlda = sqlda_new = NULL;
1801 88 : for (i = ntuples - 1; i >= 0; i--)
1802 : {
1803 : /*
1804 : * Build a new sqlda structure. Note that only
1805 : * fetching 1 record is supported
1806 : */
1807 52 : sqlda_new = ecpg_build_native_sqlda(stmt->lineno, stmt->results, i, stmt->compat);
1808 :
1809 52 : if (!sqlda_new)
1810 : {
1811 : /* cleanup all SQLDAs we created up */
1812 0 : while (sqlda)
1813 : {
1814 0 : sqlda_new = sqlda->desc_next;
1815 0 : free(sqlda);
1816 0 : sqlda = sqlda_new;
1817 : }
1818 0 : *_sqlda = NULL;
1819 :
1820 0 : ecpg_log("ecpg_process_output on line %d: out of memory allocating a new sqlda\n", stmt->lineno);
1821 0 : status = false;
1822 0 : break;
1823 : }
1824 : else
1825 : {
1826 52 : ecpg_log("ecpg_process_output on line %d: new sqlda was built\n", stmt->lineno);
1827 :
1828 52 : *_sqlda = sqlda_new;
1829 :
1830 52 : ecpg_set_native_sqlda(stmt->lineno, _sqlda, stmt->results, i, stmt->compat);
1831 52 : ecpg_log("ecpg_process_output on line %d: putting result (1 tuple %d fields) into sqlda descriptor\n",
1832 52 : stmt->lineno, PQnfields(stmt->results));
1833 :
1834 52 : sqlda_new->desc_next = sqlda;
1835 52 : sqlda = sqlda_new;
1836 : }
1837 : }
1838 : }
1839 :
1840 68 : var = var->next;
1841 : }
1842 : else
1843 8924 : for (act_field = 0; act_field < nfields && status; act_field++)
1844 : {
1845 4908 : if (var != NULL)
1846 : {
1847 4900 : status = ecpg_store_result(stmt->results, act_field, stmt, var);
1848 4900 : var = var->next;
1849 : }
1850 8 : else if (!INFORMIX_MODE(stmt->compat))
1851 : {
1852 0 : ecpg_raise(stmt->lineno, ECPG_TOO_FEW_ARGUMENTS, ECPG_SQLSTATE_USING_CLAUSE_DOES_NOT_MATCH_TARGETS, NULL);
1853 0 : return false;
1854 : }
1855 : }
1856 :
1857 4112 : if (status && var != NULL)
1858 : {
1859 0 : ecpg_raise(stmt->lineno, ECPG_TOO_MANY_ARGUMENTS, ECPG_SQLSTATE_USING_CLAUSE_DOES_NOT_MATCH_TARGETS, NULL);
1860 0 : status = false;
1861 : }
1862 :
1863 4112 : break;
1864 6370 : case PGRES_COMMAND_OK:
1865 6370 : status = true;
1866 6370 : cmdstat = PQcmdStatus(stmt->results);
1867 6370 : sqlca->sqlerrd[1] = PQoidValue(stmt->results);
1868 6370 : sqlca->sqlerrd[2] = atol(PQcmdTuples(stmt->results));
1869 6370 : ecpg_log("ecpg_process_output on line %d: OK: %s\n", stmt->lineno, cmdstat);
1870 6370 : if (stmt->compat != ECPG_COMPAT_INFORMIX_SE &&
1871 6370 : !sqlca->sqlerrd[2] &&
1872 934 : (strncmp(cmdstat, "UPDATE", 6) == 0
1873 930 : || strncmp(cmdstat, "INSERT", 6) == 0
1874 926 : || strncmp(cmdstat, "DELETE", 6) == 0))
1875 16 : ecpg_raise(stmt->lineno, ECPG_NOT_FOUND, ECPG_SQLSTATE_NO_DATA, NULL);
1876 6370 : break;
1877 4 : case PGRES_COPY_OUT:
1878 : {
1879 : char *buffer;
1880 : int res;
1881 :
1882 4 : ecpg_log("ecpg_process_output on line %d: COPY OUT data transfer in progress\n", stmt->lineno);
1883 16 : while ((res = PQgetCopyData(stmt->connection->connection,
1884 : &buffer, 0)) > 0)
1885 : {
1886 12 : printf("%s", buffer);
1887 12 : PQfreemem(buffer);
1888 : }
1889 4 : if (res == -1)
1890 : {
1891 : /* COPY done */
1892 4 : PQclear(stmt->results);
1893 4 : stmt->results = PQgetResult(stmt->connection->connection);
1894 4 : if (PQresultStatus(stmt->results) == PGRES_COMMAND_OK)
1895 4 : ecpg_log("ecpg_process_output on line %d: got PGRES_COMMAND_OK after PGRES_COPY_OUT\n", stmt->lineno);
1896 : else
1897 0 : ecpg_log("ecpg_process_output on line %d: got error after PGRES_COPY_OUT: %s", stmt->lineno, PQresultErrorMessage(stmt->results));
1898 : }
1899 4 : break;
1900 : }
1901 0 : default:
1902 :
1903 : /*
1904 : * execution should never reach this code because it is already
1905 : * handled in ecpg_check_PQresult()
1906 : */
1907 0 : ecpg_log("ecpg_process_output on line %d: unknown execution status type\n",
1908 : stmt->lineno);
1909 0 : ecpg_raise_backend(stmt->lineno, stmt->results, stmt->connection->connection, stmt->compat);
1910 0 : status = false;
1911 0 : break;
1912 : }
1913 :
1914 10566 : if (clear_result)
1915 : {
1916 10538 : PQclear(stmt->results);
1917 10538 : stmt->results = NULL;
1918 : }
1919 :
1920 : /* check for asynchronous returns */
1921 10566 : PQconsumeInput(stmt->connection->connection);
1922 10566 : while ((notify = PQnotifies(stmt->connection->connection)) != NULL)
1923 : {
1924 0 : ecpg_log("ecpg_process_output on line %d: asynchronous notification of \"%s\" from backend PID %d received\n",
1925 : stmt->lineno, notify->relname, notify->be_pid);
1926 0 : PQfreemem(notify);
1927 0 : PQconsumeInput(stmt->connection->connection);
1928 : }
1929 :
1930 10566 : return status;
1931 : }
1932 :
1933 : /*
1934 : * ecpg_do_prologue
1935 : *
1936 : * Initialize various infrastructure elements for executing the statement:
1937 : *
1938 : * - create the statement structure
1939 : * - set the C numeric locale for communicating with the backend
1940 : * - preprocess the variable list of input/output parameters into
1941 : * linked lists
1942 : */
1943 : bool
1944 10642 : ecpg_do_prologue(int lineno, const int compat, const int force_indicator,
1945 : const char *connection_name, const bool questionmarks,
1946 : enum ECPG_statement_type statement_type, const char *query,
1947 : va_list args, struct statement **stmt_out)
1948 : {
1949 10642 : struct statement *stmt = NULL;
1950 : struct connection *con;
1951 : enum ECPGttype type;
1952 : struct variable **list;
1953 : char *prepname;
1954 : bool is_prepared_name_set;
1955 :
1956 10642 : *stmt_out = NULL;
1957 :
1958 10642 : if (!query)
1959 : {
1960 0 : ecpg_raise(lineno, ECPG_EMPTY, ECPG_SQLSTATE_ECPG_INTERNAL_ERROR, NULL);
1961 0 : return false;
1962 : }
1963 :
1964 10642 : ecpg_pthreads_init();
1965 :
1966 10642 : con = ecpg_get_connection(connection_name);
1967 :
1968 10642 : if (!ecpg_init(con, connection_name, lineno))
1969 24 : return false;
1970 :
1971 10618 : stmt = (struct statement *) ecpg_alloc(sizeof(struct statement), lineno);
1972 :
1973 10618 : if (stmt == NULL)
1974 0 : return false;
1975 :
1976 : /*
1977 : * Make sure we do NOT honor the locale for numeric input/output since the
1978 : * database wants the standard decimal point. If available, use
1979 : * uselocale() for this because it's thread-safe. Windows doesn't have
1980 : * that, but it usually does have _configthreadlocale(). In some versions
1981 : * of MinGW, _configthreadlocale() exists but always returns -1 --- so
1982 : * treat that situation as if the function doesn't exist.
1983 : */
1984 : #ifdef HAVE_USELOCALE
1985 :
1986 : /*
1987 : * Since ecpg_init() succeeded, we have a connection. Any successful
1988 : * connection initializes ecpg_clocale.
1989 : */
1990 : Assert(ecpg_clocale);
1991 10618 : stmt->oldlocale = uselocale(ecpg_clocale);
1992 10618 : if (stmt->oldlocale == (locale_t) 0)
1993 : {
1994 0 : ecpg_do_epilogue(stmt);
1995 0 : return false;
1996 : }
1997 : #else
1998 : #ifdef HAVE__CONFIGTHREADLOCALE
1999 : stmt->oldthreadlocale = _configthreadlocale(_ENABLE_PER_THREAD_LOCALE);
2000 : #endif
2001 : stmt->oldlocale = ecpg_strdup(setlocale(LC_NUMERIC, NULL), lineno);
2002 : if (stmt->oldlocale == NULL)
2003 : {
2004 : ecpg_do_epilogue(stmt);
2005 : return false;
2006 : }
2007 : setlocale(LC_NUMERIC, "C");
2008 : #endif
2009 :
2010 : /*
2011 : * If statement type is ECPGst_prepnormal we are supposed to prepare the
2012 : * statement before executing them
2013 : */
2014 10618 : if (statement_type == ECPGst_prepnormal)
2015 : {
2016 32 : if (!ecpg_auto_prepare(lineno, connection_name, compat, &prepname, query))
2017 : {
2018 0 : ecpg_do_epilogue(stmt);
2019 0 : return false;
2020 : }
2021 :
2022 : /*
2023 : * statement is now prepared, so instead of the query we have to
2024 : * execute the name
2025 : */
2026 32 : stmt->command = prepname;
2027 32 : statement_type = ECPGst_execute;
2028 : }
2029 : else
2030 10586 : stmt->command = ecpg_strdup(query, lineno);
2031 :
2032 10618 : stmt->name = NULL;
2033 :
2034 10618 : if (statement_type == ECPGst_execute)
2035 : {
2036 : /* if we have an EXECUTE command, only the name is send */
2037 3328 : char *command = ecpg_prepared(stmt->command, con);
2038 :
2039 3328 : if (command)
2040 : {
2041 3328 : stmt->name = stmt->command;
2042 3328 : stmt->command = ecpg_strdup(command, lineno);
2043 : }
2044 : else
2045 : {
2046 0 : ecpg_raise(lineno, ECPG_INVALID_STMT, ECPG_SQLSTATE_INVALID_SQL_STATEMENT_NAME, stmt->command);
2047 0 : ecpg_do_epilogue(stmt);
2048 0 : return false;
2049 : }
2050 : }
2051 : /* name of PREPARE AS will be set in loop of inlist */
2052 :
2053 10618 : stmt->connection = con;
2054 10618 : stmt->lineno = lineno;
2055 10618 : stmt->compat = compat;
2056 10618 : stmt->force_indicator = force_indicator;
2057 10618 : stmt->questionmarks = questionmarks;
2058 10618 : stmt->statement_type = statement_type;
2059 :
2060 : /*------
2061 : * create a list of variables
2062 : *
2063 : * The variables are listed with input variables preceding output
2064 : * variables. The end of each group is marked by an end marker.
2065 : * Per variable we list:
2066 : *
2067 : * type - as defined in ecpgtype.h
2068 : * value - where to store the data
2069 : * varcharsize - length of string in case we have a stringvariable, else 0
2070 : * arraysize - 0 for pointer (we don't know the size of the array), 1 for
2071 : * simple variable, size for arrays
2072 : * offset - offset between ith and (i+1)th entry in an array, normally
2073 : * that means sizeof(type)
2074 : * ind_type - type of indicator variable
2075 : * ind_pointer - pointer to indicator variable
2076 : * ind_varcharsize - empty
2077 : * ind_arrsize - arraysize of indicator array
2078 : * ind_offset - indicator offset
2079 : *------
2080 : */
2081 :
2082 10618 : is_prepared_name_set = false;
2083 :
2084 10618 : list = &(stmt->inlist);
2085 :
2086 10618 : type = va_arg(args, enum ECPGttype);
2087 :
2088 33776 : while (type != ECPGt_EORT)
2089 : {
2090 23158 : if (type == ECPGt_EOIT)
2091 10618 : list = &(stmt->outlist);
2092 : else
2093 : {
2094 : struct variable *var,
2095 : *ptr;
2096 :
2097 12540 : if (!(var = (struct variable *) ecpg_alloc(sizeof(struct variable), lineno)))
2098 : {
2099 0 : ecpg_do_epilogue(stmt);
2100 0 : return false;
2101 : }
2102 :
2103 12540 : var->type = type;
2104 12540 : var->pointer = va_arg(args, char *);
2105 :
2106 12540 : var->varcharsize = va_arg(args, long);
2107 12540 : var->arrsize = va_arg(args, long);
2108 12540 : var->offset = va_arg(args, long);
2109 :
2110 : /*
2111 : * Unknown array size means pointer to an array. Unknown
2112 : * varcharsize usually also means pointer. But if the type is
2113 : * character and the array size is known, it is an array of
2114 : * pointers to char, so use var->pointer as it is.
2115 : */
2116 12540 : if (var->arrsize == 0 ||
2117 9204 : (var->varcharsize == 0 && ((var->type != ECPGt_char && var->type != ECPGt_unsigned_char) || (var->arrsize <= 1))))
2118 3528 : var->value = *((char **) (var->pointer));
2119 : else
2120 9012 : var->value = var->pointer;
2121 :
2122 : /*
2123 : * negative values are used to indicate an array without given
2124 : * bounds
2125 : */
2126 : /* reset to zero for us */
2127 12540 : if (var->arrsize < 0)
2128 56 : var->arrsize = 0;
2129 12540 : if (var->varcharsize < 0)
2130 0 : var->varcharsize = 0;
2131 :
2132 12540 : var->next = NULL;
2133 :
2134 12540 : var->ind_type = va_arg(args, enum ECPGttype);
2135 12540 : var->ind_pointer = va_arg(args, char *);
2136 12540 : var->ind_varcharsize = va_arg(args, long);
2137 12540 : var->ind_arrsize = va_arg(args, long);
2138 12540 : var->ind_offset = va_arg(args, long);
2139 :
2140 12540 : if (var->ind_type != ECPGt_NO_INDICATOR
2141 448 : && (var->ind_arrsize == 0 || var->ind_varcharsize == 0))
2142 0 : var->ind_value = *((char **) (var->ind_pointer));
2143 : else
2144 12540 : var->ind_value = var->ind_pointer;
2145 :
2146 : /*
2147 : * negative values are used to indicate an array without given
2148 : * bounds
2149 : */
2150 : /* reset to zero for us */
2151 12540 : if (var->ind_arrsize < 0)
2152 56 : var->ind_arrsize = 0;
2153 12540 : if (var->ind_varcharsize < 0)
2154 0 : var->ind_varcharsize = 0;
2155 :
2156 : /* if variable is NULL, the statement hasn't been prepared */
2157 12540 : if (var->pointer == NULL)
2158 : {
2159 0 : ecpg_raise(lineno, ECPG_INVALID_STMT, ECPG_SQLSTATE_INVALID_SQL_STATEMENT_NAME, NULL);
2160 0 : ecpg_free(var);
2161 0 : ecpg_do_epilogue(stmt);
2162 0 : return false;
2163 : }
2164 :
2165 13820 : for (ptr = *list; ptr && ptr->next; ptr = ptr->next)
2166 : ;
2167 :
2168 12540 : if (ptr == NULL)
2169 9604 : *list = var;
2170 : else
2171 2936 : ptr->next = var;
2172 :
2173 12540 : if (!is_prepared_name_set && stmt->statement_type == ECPGst_prepare)
2174 : {
2175 20 : stmt->name = ecpg_strdup(var->value, lineno);
2176 20 : is_prepared_name_set = true;
2177 : }
2178 : }
2179 :
2180 23158 : type = va_arg(args, enum ECPGttype);
2181 : }
2182 :
2183 : /* are we connected? */
2184 10618 : if (con == NULL || con->connection == NULL)
2185 : {
2186 0 : ecpg_raise(lineno, ECPG_NOT_CONN, ECPG_SQLSTATE_ECPG_INTERNAL_ERROR, (con) ? con->name : ecpg_gettext("<empty>"));
2187 0 : ecpg_do_epilogue(stmt);
2188 0 : return false;
2189 : }
2190 :
2191 10618 : if (!is_prepared_name_set && stmt->statement_type == ECPGst_prepare)
2192 : {
2193 0 : ecpg_raise(lineno, ECPG_TOO_FEW_ARGUMENTS, ECPG_SQLSTATE_ECPG_INTERNAL_ERROR, (con) ? con->name : ecpg_gettext("<empty>"));
2194 0 : ecpg_do_epilogue(stmt);
2195 0 : return false;
2196 : }
2197 :
2198 : /* initialize auto_mem struct */
2199 10618 : ecpg_clear_auto_mem();
2200 :
2201 10618 : *stmt_out = stmt;
2202 :
2203 10618 : return true;
2204 : }
2205 :
2206 : /*
2207 : * ecpg_do_epilogue
2208 : * Restore the application locale and free the statement structure.
2209 : */
2210 : void
2211 10642 : ecpg_do_epilogue(struct statement *stmt)
2212 : {
2213 10642 : if (stmt == NULL)
2214 24 : return;
2215 :
2216 : #ifdef HAVE_USELOCALE
2217 10618 : if (stmt->oldlocale != (locale_t) 0)
2218 10618 : uselocale(stmt->oldlocale);
2219 : #else
2220 : if (stmt->oldlocale)
2221 : setlocale(LC_NUMERIC, stmt->oldlocale);
2222 : #ifdef HAVE__CONFIGTHREADLOCALE
2223 :
2224 : /*
2225 : * This is a bit trickier than it looks: if we failed partway through
2226 : * statement initialization, oldthreadlocale could still be 0. But that's
2227 : * okay because a call with 0 is defined to be a no-op.
2228 : */
2229 : if (stmt->oldthreadlocale != -1)
2230 : (void) _configthreadlocale(stmt->oldthreadlocale);
2231 : #endif
2232 : #endif
2233 :
2234 10618 : free_statement(stmt);
2235 : }
2236 :
2237 : /*
2238 : * Execute SQL statements in the backend.
2239 : * The input/output parameters (variable argument list) are passed
2240 : * in a va_list, so other functions can use this interface.
2241 : */
2242 : bool
2243 10642 : 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)
2244 : {
2245 10642 : struct statement *stmt = NULL;
2246 :
2247 10642 : if (!ecpg_do_prologue(lineno, compat, force_indicator, connection_name,
2248 : questionmarks, (enum ECPG_statement_type) st,
2249 : query, args, &stmt))
2250 24 : goto fail;
2251 :
2252 10618 : if (!ecpg_build_params(stmt))
2253 0 : goto fail;
2254 :
2255 10618 : if (!ecpg_autostart_transaction(stmt))
2256 0 : goto fail;
2257 :
2258 10618 : if (!ecpg_execute(stmt))
2259 52 : goto fail;
2260 :
2261 10566 : if (!ecpg_process_output(stmt, true))
2262 108 : goto fail;
2263 :
2264 10458 : ecpg_do_epilogue(stmt);
2265 10458 : return true;
2266 :
2267 184 : fail:
2268 184 : ecpg_do_epilogue(stmt);
2269 184 : return false;
2270 : }
2271 :
2272 : /*
2273 : * Execute SQL statements in the backend.
2274 : * The input/output parameters are passed as variable-length argument list.
2275 : */
2276 : bool
2277 10642 : ECPGdo(const int lineno, const int compat, const int force_indicator, const char *connection_name, const bool questionmarks, const int st, const char *query,...)
2278 : {
2279 : va_list args;
2280 : bool ret;
2281 :
2282 10642 : va_start(args, query);
2283 10642 : ret = ecpg_do(lineno, compat, force_indicator, connection_name,
2284 : questionmarks, st, query, args);
2285 10642 : va_end(args);
2286 :
2287 10642 : return ret;
2288 : }
2289 :
2290 : /* old descriptor interface */
2291 : bool
2292 0 : ECPGdo_descriptor(int line, const char *connection,
2293 : const char *descriptor, const char *query)
2294 : {
2295 0 : return ECPGdo(line, ECPG_COMPAT_PGSQL, true, connection, '\0', 0, query, ECPGt_EOIT,
2296 : ECPGt_descriptor, descriptor, 0L, 0L, 0L,
2297 : ECPGt_NO_INDICATOR, NULL, 0L, 0L, 0L, ECPGt_EORT);
2298 : }
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