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dbdimp.c
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/* vim: set noai ts=4 et sw=4: */
/*
Copyright (c) 2010, 2011 Popa Marius Adrian <[email protected]>
Copyright (c) 2011, 2012, 2013 Damyan Ivanov <[email protected]>
Copyright (c) 2010 Mike Pomraning <[email protected]>
Copyright (c) 1999-2008 Edwin Pratomo
Portions Copyright (c) 2001-2005 Daniel Ritz
You may distribute under the terms of either the GNU General Public
License or the Artistic License, as specified in the Perl README file.
*/
#include "Firebird.h"
#include <stdint.h>
#ifndef _MSC_VER
#include <inttypes.h>
#endif
DBISTATE_DECLARE;
#define ERRBUFSIZE 255
#define IB_SQLtimeformat(xxh, format, sv) \
do { \
STRLEN len; \
char *frmt = NULL; \
char *buf = SvPV(sv, len); \
if (len < 2 || len > 30) break; \
Newx(frmt, len + 1, char); \
strcpy(frmt, buf); \
if (format) Safefree(format); \
format = frmt; \
} while (0)
#define IB_alloc_sqlda(sqlda, n) \
do { \
short len = n; \
char *tmp; \
if (sqlda) \
{ \
Safefree(sqlda); \
sqlda = NULL; \
} \
Newxz(tmp, XSQLDA_LENGTH(len), char); \
sqlda = (XSQLDA*)tmp; \
sqlda->sqln = len; \
sqlda->version = SQLDA_OK_VERSION; \
} while (0)
#ifndef is_ascii_string
#warning "Using built-in implementation of is_ascii_string."
#warning "Upgrading perl to 5.12 is suggested."
// for perl before 5.12.0 RC1
// taken straight from the perl source
bool is_ascii_string(const U8 *s, STRLEN len) {
const U8* const send = s + (len ? len : strlen((const char *)s));
const U8* x = s;
for (; x < send; ++x) {
if (!UTF8_IS_INVARIANT(*x))
break;
}
return x == send;
}
#endif
int create_cursor_name(SV *sth, imp_sth_t *imp_sth)
{
ISC_STATUS status[ISC_STATUS_LENGTH];
#define CURSOR_NAME_LEN 22
Newxz(imp_sth->cursor_name, CURSOR_NAME_LEN, char);
snprintf(imp_sth->cursor_name, CURSOR_NAME_LEN, "perl%16.16X", (uint32_t)imp_sth->stmt);
isc_dsql_set_cursor_name(status, &(imp_sth->stmt), imp_sth->cursor_name, 0);
if (ib_error_check(sth, status))
return FALSE;
return TRUE;
}
void maybe_upgrade_to_utf8(imp_dbh_t *imp_dbh, SV *sv) {
if (imp_dbh->ib_enable_utf8) {
U8 *p;
STRLEN len;
p = (U8*)SvPV(sv, len);
if (!is_ascii_string(p, len)
&& is_utf8_string(p, len)) {
SvUTF8_on(sv);
}
}
}
void dbd_init(dbistate_t *dbistate)
{
DBISTATE_INIT;
}
void ib_cleanup_st_prepare (imp_sth_t *imp_sth)
{
FREE_SETNULL(imp_sth->in_sqlda);
FREE_SETNULL(imp_sth->out_sqlda);
FREE_SETNULL(imp_sth->dateformat);
FREE_SETNULL(imp_sth->timeformat);
FREE_SETNULL(imp_sth->timestampformat);
}
void ib_cleanup_st_execute (imp_sth_t *imp_sth)
{
if (imp_sth->in_sqlda)
{
int i;
XSQLVAR *var = imp_sth->in_sqlda->sqlvar;
for (i = 0; i < imp_sth->in_sqlda->sqln; i++, var++)
{
Safefree(var->sqldata);
var->sqldata = NULL;
if (var->sqlind)
*(var->sqlind) = -1; /* isNULL */
}
}
}
/* lower level error handling */
void do_error(SV *h, int rc, char *what)
{
D_imp_xxh(h);
SV *errstr = DBIc_ERRSTR(imp_xxh);
sv_setiv(DBIc_ERR(imp_xxh), (IV)rc);
sv_setpv(errstr, what);
if (DBIc_TRACE_LEVEL(imp_xxh) >= 2)
PerlIO_printf(DBIc_LOGPIO(imp_xxh), "%s error %d recorded: %s\n",
what, rc, SvPV(errstr,PL_na));
}
#define CALC_AVAILABLE(buff) sizeof(buff) - strlen(buff) - 1
/*
decode status vector into a char pointer (implemented by a mortal scalar)
Returns NULL if there is no error
*/
char* ib_error_decode(const ISC_STATUS *status) {
SV *sv = NULL;
long sqlcode;
#if !defined(FB_API_VER) || FB_API_VER < 20
ISC_STATUS *pvector = status;
#else
const ISC_STATUS *pvector = status;
#endif
#if defined (INCLUDE_TYPES_PUB_H)
ISC_SCHAR msg[1024];
#else
char msg[1024];
#endif
if (status[0] != 1 || status[1] <= 0)
return NULL;
if ((sqlcode = isc_sqlcode(status)) != 0)
{
isc_sql_interprete((short) sqlcode, msg, sizeof(msg));
sv = sv_2mortal(newSVpv(msg, 0));
}
#if !defined(FB_API_VER) || FB_API_VER < 20
while (isc_interprete(msg, &pvector))
#else
while (fb_interpret(msg, sizeof(msg), &pvector))
#endif
{
if ( sv != NULL ) {
sv_catpvn(sv, "\n-", 2);
sv_catpv(sv, msg);
}
else sv = sv_2mortal(newSVpv(msg,0));
}
sv_catpvn(sv, "\0", 1); // NUL-terminate
return SvPV_nolen(sv);
}
/* higher level error handling, check and decode status */
int ib_error_check(SV *h, ISC_STATUS *status)
{
char *msg = ib_error_decode(status);
if (msg == NULL)
return SUCCESS;
do_error(h, isc_sqlcode(status), msg);
return FAILURE;
}
static int ib2sql_type(int ibtype)
{
/* Firebird Internal (not external) types */
switch(ibtype)
{
case SQL_TEXT:
case 453:
return DBI_SQL_CHAR;
case SQL_LONG:
case 497:
return DBI_SQL_INTEGER; /* integer */
case SQL_SHORT:
case 501:
return DBI_SQL_SMALLINT; /* smallint */
case SQL_FLOAT:
case 483:
return DBI_SQL_FLOAT;
case SQL_DOUBLE:
case 481:
return DBI_SQL_DOUBLE;
case SQL_TIMESTAMP:
case 511:
return DBI_SQL_TIMESTAMP;
case SQL_TYPE_DATE:
case 571:
return DBI_SQL_DATE;
case SQL_TYPE_TIME:
case 561:
return DBI_SQL_TIME;
case SQL_VARYING:
case 449:
return DBI_SQL_VARCHAR;
}
/* else map type into DBI reserved standard range */
return -9000 - ibtype;
}
#if 0
/* from DBI (ANSI/ISO/ODBC) types to Firebird types */
static int ib_sql_type(imp_sth_t *imp_sth, char *name, int sql_type)
{
/* XXX should detect DBI reserved standard type range here */
switch (sql_type) {
case DBI_SQL_NUMERIC:
case DBI_SQL_DECIMAL:
case DBI_SQL_INTEGER:
case DBI_SQL_BIGINT:
case DBI_SQL_TINYINT:
case DBI_SQL_SMALLINT:
case DBI_SQL_FLOAT:
case DBI_SQL_REAL:
case DBI_SQL_DOUBLE:
return 481;
case DBI_SQL_VARCHAR:
return 449;
case DBI_SQL_CHAR:
return 453;
case SQL_DATE:
case SQL_TIME:
case SQL_TIMESTAMP:
default:
if (DBIc_WARN(imp_sth) && imp_sth && name)
warn("SQL type %d for '%s' is not fully supported, bound as SQL_VARCHAR instead");
return ib_sql_type(imp_sth, name, DBI_SQL_VARCHAR);
}
}
#endif
int dbd_db_login6(SV *dbh, imp_dbh_t *imp_dbh, char *dbname, char *uid,
char *pwd, SV *attr)
{
dTHR;
ISC_STATUS status[ISC_STATUS_LENGTH];
HV *hv;
SV *sv;
SV **svp; /* versatile scalar storage */
unsigned short ib_dialect, ib_cache;
char *ib_role;
char ISC_FAR *dpb_buffer, *dpb;
int connect_timeout = 0;
char ISC_FAR *database;
STRLEN len, db_len; /* for SvPV */
char dbkey_scope = 0;
short dpb_length = 0;
unsigned int buflen = 0; /* buffer size is dynamic */
imp_dbh->db = 0L;
imp_dbh->tr = 0L;
imp_dbh->tpb_buffer = NULL;
imp_dbh->tpb_length = 0;
imp_dbh->sth_ddl = 0;
imp_dbh->soft_commit = 0; /* use soft commit (isc_commit_retaining)? */
imp_dbh->ib_enable_utf8 = FALSE;
/* default date/time formats
+ *
* Old API: dateformat ........ %c
* timeformat ........ (none)
* timestampformat ... (none)
*
* v6 API: dateformat ........ %x
* timeformat ........ %X
* timestampformat ... %c
*/
Newxz(imp_dbh->dateformat, 3, char);
strcpy(imp_dbh->dateformat, "%x");
Newxz(imp_dbh->timeformat, 3, char);
strcpy(imp_dbh->timeformat, "%X");
Newxz(imp_dbh->timestampformat, 3, char);
strcpy(imp_dbh->timestampformat, "%c");
/* linked list */
imp_dbh->first_sth = NULL;
imp_dbh->last_sth = NULL;
/* save the current context for thread/multiplicy safety */
#if defined(USE_THREADS) || defined(USE_ITHREADS) || defined(MULTIPLICITY)
imp_dbh->context = PERL_GET_CONTEXT;
#endif
/* Parse DSN and init values */
sv = DBIc_IMP_DATA(imp_dbh);
if (!sv || !SvROK(sv))
return FALSE;
hv = (HV*) SvRV(sv);
if (SvTYPE(hv) != SVt_PVHV)
return FALSE;
if (uid != NULL) {
DPB_PREP_STRING(buflen, uid);
}
if (pwd != NULL) {
DPB_PREP_STRING(buflen, pwd);
}
/* does't go to DPB -> no buflen inc */
if ((svp = hv_fetch(hv, "database", 8, FALSE)))
database = SvPV(*svp, db_len);
else database = NULL;
/* role, cache, charset, sqldialect */
if ((svp = hv_fetch(hv, "ib_dialect", 10, FALSE)))
ib_dialect = (unsigned short) SvIV(*svp);
else
ib_dialect = DEFAULT_SQL_DIALECT;
DPB_PREP_INTEGER(buflen);
if ((svp = hv_fetch(hv, "ib_cache", 8, FALSE)))
{
ib_cache = (unsigned short) SvIV(*svp);
DPB_PREP_INTEGER(buflen);
}
else
ib_cache = 0;
if ((svp = hv_fetch(hv, "ib_charset", 10, FALSE)))
{
char *p = SvPV(*svp, len);
DPB_PREP_STRING_LEN(buflen, len);
Newx(imp_dbh->ib_charset, len+1, char);
strncpy(imp_dbh->ib_charset, p, len);
*(imp_dbh->ib_charset + len) = '\0';
}
else {
imp_dbh->ib_charset = NULL;
}
if ((svp = hv_fetch(hv, "ib_role", 7, FALSE)))
{
ib_role = SvPV(*svp, len);
DPB_PREP_STRING_LEN(buflen, len);
}
else
ib_role = NULL;
if ((svp = hv_fetch(hv, "ib_dbkey_scope", 14, FALSE)))
{
dbkey_scope = (char)SvIV(*svp);
if (dbkey_scope)
DPB_PREP_INTEGER(buflen);
}
if ((svp = hv_fetch(hv, "timeout", 7, FALSE)))
{
int val = SvIV(*svp);
if (val <= 0) croak("Positive timeout required");
connect_timeout = val;
DPB_PREP_INTEGER(buflen);
}
/* add length of other parameters to needed buflen */
buflen += 1; /* dbpversion */
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_login6\n"));
/* Allocate DPB */
Newx(dpb_buffer, buflen, char);
/* Default SQL dialect for every statement */
imp_dbh->sqldialect = ib_dialect;
/* Fill DPB */
dpb = dpb_buffer;
*dpb++ = isc_dpb_version1;
DPB_FILL_STRING(dpb, isc_dpb_user_name, uid);
DPB_FILL_STRING(dpb, isc_dpb_password, pwd);
if (ib_cache)
{
/*
* Safety check: Do not allocate a cache buffer greater than
* 10000 pages, so we don't exhaust memory inadvertently.
*/
if (ib_cache > 10000) ib_cache = 10000;
DPB_FILL_INTEGER(dpb, isc_dpb_num_buffers, ib_cache);
}
DPB_FILL_INTEGER(dpb, isc_dpb_sql_dialect, ib_dialect);
if (dbkey_scope)
{
DPB_FILL_INTEGER(dpb, isc_dpb_dbkey_scope, dbkey_scope);
}
if (imp_dbh->ib_charset)
{
DPB_FILL_STRING(dpb, isc_dpb_lc_ctype, imp_dbh->ib_charset);
}
if (ib_role)
{
DPB_FILL_STRING(dpb, isc_dpb_sql_role_name, ib_role);
}
if (connect_timeout)
{
DPB_FILL_INTEGER(dpb, isc_dpb_connect_timeout, connect_timeout);
}
dpb_length = dpb - dpb_buffer;
if ( dpb_length != buflen ) {
fprintf(stderr, "# db_login6: %d != %d\n", dpb_length, buflen);
fflush(stderr);
abort();
}
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_login6: attaching to database %s..\n", database));
isc_attach_database(status, /* status vector */
db_len,
database, /* connect string */
&(imp_dbh->db), /* ref to db handle */
dpb_length, /* length of dpb */
dpb_buffer); /* connect options */
/* freeing database parameter buffer */
Safefree(dpb_buffer);
/* return false on failed attach */
if (ib_error_check(dbh, status))
return FALSE;
imp_dbh->charset_bytes_per_char = NULL;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_login6: success attaching.\n"));
/* Tell DBI, that dbh->destroy should be called for this handle */
DBIc_IMPSET_on(imp_dbh);
/* Tell DBI, that dbh->disconnect should be called for this handle */
DBIc_ACTIVE_on(imp_dbh);
return TRUE;
}
int dbd_db_login(SV *dbh, imp_dbh_t *imp_dbh, char *dbname, char *uid,
char *pwd)
{
return dbd_db_login6(dbh, imp_dbh, dbname, uid, pwd, Nullsv);
}
int dbd_db_ping(SV *dbh)
{
D_imp_dbh(dbh);
ISC_STATUS status[ISC_STATUS_LENGTH];
char buffer[100];
char req[] = {
isc_info_ods_version,
isc_info_end
};
DBI_TRACE_imp_xxh(imp_dbh, 1, (DBIc_LOGPIO(imp_dbh), "dbd_db_ping\n"));
if (isc_database_info(status, &(imp_dbh->db), sizeof(req), req, sizeof(buffer), buffer))
if (ib_error_check(dbh, status))
return FALSE;
return TRUE;
}
int dbd_db_disconnect(SV *dbh, imp_dbh_t *imp_dbh)
{
dTHR;
ISC_STATUS status[ISC_STATUS_LENGTH];
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_disconnect\n"));
/* set the database handle to inactive */
DBIc_ACTIVE_off(imp_dbh);
/* always do a rollback if there's an open transaction.
* Firebird requires to close open transactions before
* detaching a database.
*/
if (imp_dbh->tr)
{
/* rollback and close trans context */
isc_rollback_transaction(status, &(imp_dbh->tr));
if (ib_error_check(dbh, status))
return FALSE;
imp_dbh->tr = 0L;
}
FREE_SETNULL(imp_dbh->ib_charset);
FREE_SETNULL(imp_dbh->tpb_buffer);
FREE_SETNULL(imp_dbh->dateformat);
FREE_SETNULL(imp_dbh->timeformat);
FREE_SETNULL(imp_dbh->timestampformat);
FREE_SETNULL(imp_dbh->charset_bytes_per_char);
/* detach database */
isc_detach_database(status, &(imp_dbh->db));
if (ib_error_check(dbh, status))
return FALSE;
return TRUE;
}
void dbd_db_destroy (SV *dbh, imp_dbh_t *imp_dbh)
{
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_destroy\n"));
if (DBIc_ACTIVE(imp_dbh))
dbd_db_disconnect(dbh, imp_dbh);
/* Nothing in imp_dbh to be freed */
DBIc_IMPSET_off(imp_dbh);
}
int dbd_db_commit (SV *dbh, imp_dbh_t *imp_dbh)
{
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_commit\n"));
/* no commit if AutoCommit on */
if (DBIc_has(imp_dbh, DBIcf_AutoCommit))
return FALSE;
/* commit the transaction */
if (!ib_commit_transaction(dbh, imp_dbh))
return FALSE;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_commit succeed.\n"));
return TRUE;
}
int dbd_db_rollback(SV *dbh, imp_dbh_t *imp_dbh)
{
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_rollback\n"));
/* no rollback if AutoCommit = on */
if (DBIc_has(imp_dbh, DBIcf_AutoCommit) != FALSE)
return FALSE;
/* rollback the transaction */
if (!ib_rollback_transaction(dbh, imp_dbh))
return FALSE;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_rollback succeed.\n"));
return TRUE;
}
int dbd_db_STORE_attrib(SV *dbh, imp_dbh_t *imp_dbh, SV *keysv, SV *valuesv)
{
STRLEN kl;
char *key = SvPV(keysv, kl);
int on = SvTRUE(valuesv)? 1: 0;
int oldval;
int set_frmts = 0;
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_STORE - %s\n", key));
/**************************************************************************/
if ((kl==10) && strEQ(key, "AutoCommit"))
{
oldval = DBIc_has(imp_dbh, DBIcf_AutoCommit)? 1: 0;
DBIc_set(imp_dbh, DBIcf_AutoCommit, on);
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_STORE: switch AutoCommit from %d to %d\n", oldval, on));
if (oldval == FALSE && on)
{
/* AutoCommit set from 0 to 1, commit any outstanding changes */
if (imp_dbh->tr)
{
if (!ib_commit_transaction(dbh, imp_dbh))
return FALSE;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_STORE: commit open transaction\n"));
}
}
return TRUE; /* handled */
}
/**************************************************************************/
else if ((kl==13) && strEQ(key, "ib_softcommit"))
{
oldval = imp_dbh->soft_commit;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_STORE: switch ib_softcommit from %d to %d\n", oldval, on));
/* set new value */
imp_dbh->soft_commit = on;
/* switching softcommit from 1 to 0 -> make a hard commit */
if (!on && oldval)
{
if (imp_dbh->tr)
{
if (!ib_commit_transaction(dbh, imp_dbh))
return FALSE;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_STORE: commit open transaction\n"));
}
}
return TRUE; /* handled */
}
else if ((kl==14) && strEQ(key, "ib_enable_utf8")) {
if (on) {
if (imp_dbh->ib_charset && strEQ(imp_dbh->ib_charset, "UTF8")) {
imp_dbh->ib_enable_utf8 = TRUE;
return TRUE;
}
else croak( "ib_enable_utf8 requires ib_charset=UTF8 in DSN (you gave %s)", imp_dbh->ib_charset ? imp_dbh->ib_charset : "<nothing>" );
}
else {
imp_dbh->ib_enable_utf8 = FALSE;
return TRUE;
}
}
else if ((kl==11) && strEQ(key, "ib_time_all"))
set_frmts = 1;
/**************************************************************************/
if (set_frmts || ((kl==13) && strEQ(key, "ib_dateformat")))
{
IB_SQLtimeformat(dbh, imp_dbh->dateformat, valuesv);
if (!set_frmts) return TRUE;
}
if (set_frmts || ((kl==13) && strEQ(key, "ib_timeformat")))
{
IB_SQLtimeformat(dbh, imp_dbh->timeformat, valuesv);
if (!set_frmts) return TRUE;
}
if (set_frmts || ((kl==18) && strEQ(key, "ib_timestampformat")))
{
IB_SQLtimeformat(dbh, imp_dbh->timestampformat, valuesv);
if (!set_frmts) return TRUE;
}
/**************************************************************************/
if (set_frmts) return TRUE;
else return FALSE; /* not handled */
}
SV *dbd_db_FETCH_attrib(SV *dbh, imp_dbh_t *imp_dbh, SV *keysv)
{
STRLEN kl;
char * key = SvPV(keysv, kl);
SV * result = NULL;
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_FETCH - %s\n", key));
if ((kl==10) && strEQ(key, "AutoCommit"))
result = boolSV(DBIc_has(imp_dbh, DBIcf_AutoCommit));
else if ((kl==13) && strEQ(key, "ib_softcommit"))
result = boolSV(imp_dbh->soft_commit);
else if ((kl==14) && strEQ(key, "ib_enable_utf8"))
result = boolSV(imp_dbh->ib_enable_utf8);
else if ((kl==13) && strEQ(key, "ib_dateformat"))
result = newSVpvn(imp_dbh->dateformat, strlen(imp_dbh->dateformat));
else if ((kl==13) && strEQ(key, "ib_timeformat"))
result = newSVpvn(imp_dbh->timeformat, strlen(imp_dbh->timeformat));
else if ((kl==18) && strEQ(key, "ib_timestampformat"))
result = newSVpvn(imp_dbh->timestampformat,
strlen(imp_dbh->timestampformat));
else if ((kl==11) && strEQ(key, "ib_embedded"))
#ifdef EMBEDDED
result = &PL_sv_yes;
#else
result = &PL_sv_no;
#endif
if (result == NULL)
return Nullsv;
else
{
if ((result == &PL_sv_yes) || (result == &PL_sv_no))
return result;
else
return sv_2mortal(result);
}
}
void dbd_preparse(SV *sth, imp_sth_t *imp_sth, char *statement)
{
ISC_STATUS status[ISC_STATUS_LENGTH];
DBI_TRACE_imp_xxh(imp_sth, 2, (DBIc_LOGPIO(imp_sth), "Enter dbd_preparse\n"));
isc_dsql_describe_bind(status, &(imp_sth->stmt), 1, imp_sth->in_sqlda);
if (ib_error_check(sth, status))
{
ib_cleanup_st_prepare(imp_sth);
return;
}
/* realloc in_sqlda and rebind if not enough XSQLVAR for bind params */
if (imp_sth->in_sqlda->sqld > imp_sth->in_sqlda->sqln)
{
IB_alloc_sqlda(imp_sth->in_sqlda, imp_sth->in_sqlda->sqld);
if (imp_sth->in_sqlda == NULL)
{
do_error(sth, 1, "Fail to reallocate in_slqda");
ib_cleanup_st_prepare(imp_sth);
return;
}
else
{
isc_dsql_describe_bind(status, &(imp_sth->stmt), 1, imp_sth->in_sqlda);
if (ib_error_check(sth, status))
{
ib_cleanup_st_prepare(imp_sth);
return;
}
}
}
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_preparse: describe_bind passed.\n"
"dbd_preparse: exit; in_sqlda: sqld: %d, sqln: %d.\n",
imp_sth->in_sqlda->sqld, imp_sth->in_sqlda->sqln));
DBIc_NUM_PARAMS(imp_sth) = imp_sth->in_sqlda->sqld;
}
int dbd_st_prepare(SV *sth, imp_sth_t *imp_sth, char *statement, SV *attribs)
{
D_imp_dbh_from_sth;
ISC_STATUS status[ISC_STATUS_LENGTH];
int i;
short dtype;
static char stmt_info[1];
char info_buffer[20], count_item;
XSQLVAR *var;
DBI_TRACE_imp_xxh(imp_sth, 2, (DBIc_LOGPIO(imp_sth), "Enter dbd_st_prepare\n"));
if (!DBIc_ACTIVE(imp_dbh))
{
do_error(sth, -1, "Database disconnected");
return FALSE;
}
/* init values */
count_item = 0;
imp_sth->count_item = 0;
imp_sth->affected = -1;
imp_sth->in_sqlda = NULL;
imp_sth->out_sqlda = NULL;
imp_sth->cursor_name = NULL;
imp_sth->dateformat = NULL;
imp_sth->timestampformat = NULL;
imp_sth->timeformat = NULL;
/* double linked list */
imp_sth->prev_sth = NULL;
imp_sth->next_sth = NULL;
if (attribs)
{
SV **svp;
if ((svp = DBD_ATTRIB_GET_SVP(attribs, "ib_time_all", 11)) != NULL)
{
IB_SQLtimeformat(sth, imp_sth->dateformat, *svp);
IB_SQLtimeformat(sth, imp_sth->timestampformat, *svp);
IB_SQLtimeformat(sth, imp_sth->timeformat, *svp);
}
if ((svp = DBD_ATTRIB_GET_SVP(attribs, "ib_dateformat", 13)) != NULL)
IB_SQLtimeformat(sth, imp_sth->dateformat, *svp);
if ((svp = DBD_ATTRIB_GET_SVP(attribs, "ib_timestampformat", 18)) != NULL)
IB_SQLtimeformat(sth, imp_sth->timestampformat, *svp);
if ((svp = DBD_ATTRIB_GET_SVP(attribs, "ib_timeformat", 13)) != NULL)
IB_SQLtimeformat(sth, imp_sth->timeformat, *svp);
}
/* allocate 1 XSQLVAR to in_sqlda */
IB_alloc_sqlda(imp_sth->in_sqlda, 1);
if (imp_sth->in_sqlda == NULL)
{
do_error(sth, 2, "Fail to allocate in_sqlda");
return FALSE;
}
/* allocate 1 XSQLVAR to out_sqlda */
IB_alloc_sqlda(imp_sth->out_sqlda, 1);
if (imp_sth->out_sqlda == NULL)
{
do_error(sth, 2, "Fail to allocate out_sqlda");
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
/* init statement handle */
isc_dsql_alloc_statement2(status, &(imp_dbh->db), &(imp_sth->stmt));
if (ib_error_check(sth, status))
{
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: sqldialect: %d.\n", imp_dbh->sqldialect));
if (!imp_dbh->tr)
{
/* start a new transaction using current TPB */
if (!ib_start_transaction(sth, imp_dbh))
{
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
}
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: statement: %s.\n", statement));
isc_dsql_prepare(status, &(imp_dbh->tr), &(imp_sth->stmt), 0, statement,
imp_dbh->sqldialect, imp_sth->out_sqlda);
if (ib_error_check(sth, status))
{
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: isc_dsql_prepare succeed..\n"));
stmt_info[0] = isc_info_sql_stmt_type;
isc_dsql_sql_info(status, &(imp_sth->stmt), sizeof (stmt_info), stmt_info,
sizeof (info_buffer), info_buffer);
if (ib_error_check(sth, status))
{
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
{
short l = (short) isc_vax_integer((char *) info_buffer + 1, 2);
imp_sth->type = isc_vax_integer((char *) info_buffer + 3, l);
}
/* sanity check of statement type */
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: statement type: %ld.\n", imp_sth->type));
switch (imp_sth->type)
{
/* Implemented statement types. */
case isc_info_sql_stmt_select:
case isc_info_sql_stmt_select_for_upd:
/*
* Unfortunately, select count item doesn't work
* in current versions of Firebird.
* isql does it literally by fetching everything
* and counting the number of rows it fetched.
* Firebird doesn't seem to be able to estimate
* the number of rows before the client app
* fetches them all.
*/
//count_item = isc_info_req_select_count;
break;
case isc_info_sql_stmt_insert:
count_item = isc_info_req_insert_count;
break;
case isc_info_sql_stmt_update:
count_item = isc_info_req_update_count;
break;
case isc_info_sql_stmt_delete:
count_item = isc_info_req_delete_count;
break;
case isc_info_sql_stmt_ddl:
case isc_info_sql_stmt_set_generator:
case isc_info_sql_stmt_exec_procedure:
case isc_info_sql_stmt_savepoint:
case isc_info_sql_stmt_start_trans:
case isc_info_sql_stmt_commit:
case isc_info_sql_stmt_rollback:
/* no count_item to gather */
break;
/*
* Unimplemented statement types. Some may be implemented in the future.
*/
case isc_info_sql_stmt_get_segment:
case isc_info_sql_stmt_put_segment:
default:
do_error(sth, 10, "Statement type is not implemented in this version of DBD::Firebird");
return FALSE;
break;
}
imp_sth->count_item = count_item;
/* scan statement for '?', ':1' and/or ':foo' style placeholders */
/* realloc in_sqlda where needed */
dbd_preparse(sth, imp_sth, statement);
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: dbd_describe passed.\n"
"out_sqlda: sqld: %d, sqln: %d.\n",
imp_sth->out_sqlda->sqld, imp_sth->out_sqlda->sqln));
/* enough output parameter block ? */
if (imp_sth->out_sqlda->sqld > imp_sth->out_sqlda->sqln)
{
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: realloc out_sqlda..\n"));
IB_alloc_sqlda(imp_sth->out_sqlda, imp_sth->out_sqlda->sqld);
if (imp_sth->out_sqlda == NULL)
{
do_error(sth, IB_ALLOC_FAIL, "Fail to reallocate out_sqlda");
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}