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dbdimp.c
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dbdimp.c
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/* vim: noet sts=0 ts=8 sw=8 */
/*
$Id: dbdimp.c 13162 2009-08-04 18:10:35Z turnstep $
Copyright (c) 2002-2009 Greg Sabino Mullane and others: see the Changes file
Portions Copyright (c) 2002 Jeffrey W. Baker
Portions Copyright (c) 1997-2000 Edmund Mergl
Portions Copyright (c) 1994-1997 Tim Bunce
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 "Pg.h"
#if defined (_WIN32) && !defined (atoll)
# define atoll(X) _atoi64(X)
#endif
#ifndef powf
#define powf (float)pow
#endif
#define sword signed int
#define sb2 signed short
#define ub2 unsigned short
#if PGLIBVERSION < 80000
/* Should not be called, throw errors: */
PGresult *PQprepare(PGconn *a, const char *b, const char *c, int d, const Oid *e);
PGresult *PQprepare(PGconn *a, const char *b, const char *c, int d, const Oid *e) {
if (a||b||c||d||e) d=0;
croak ("Called wrong PQprepare");
}
int PQserverVersion(const PGconn *a);
int PQserverVersion(const PGconn *a) { if (!a) return 0; croak ("Called wrong PQserverVersion"); }
typedef struct pg_cancel PGcancel;
int PQcancel(PGcancel *cancel, char *errbuf, int errbufsize);
int PQcancel(PGcancel *cancel, char *errbuf, int errbufsize) {
croak ("Called wrong PQcancel");
}
PGcancel *PQgetCancel(PGconn *conn);
PGcancel *PQgetCancel(PGconn *conn) {
croak ("Called wrong PQgetCancel");
}
void PQfreeCancel(PGcancel *cancel);
void PQfreeCancel(PGcancel *cancel) {
croak ("Called wrong PQfreeCancel");
}
#endif
#ifndef PGErrorVerbosity
typedef enum
{
PGERROR_TERSE, /* single-line error messages */
PGERROR_DEFAULT, /* recommended style */
PGERROR_VERBOSE /* all the facts, ma'am */
} PGErrorVerbosity;
#endif
#define IS_DBI_HANDLE(h) \
(SvROK(h) && SvTYPE(SvRV(h)) == SVt_PVHV && \
SvRMAGICAL(SvRV(h)) && (SvMAGIC(SvRV(h)))->mg_type == 'P')
#define IS_PG_OK_STATUS(status_) ( \
status_ == PGRES_EMPTY_QUERY || \
status_ == PGRES_COMMAND_OK || \
status_ == PGRES_TUPLES_OK || \
status_ == PGRES_COPY_OUT || \
status_ == PGRES_COPY_IN \
)
static void pg_error(pTHX_ SV *h, int error_num, const char *error_msg);
static void _pg_warn (pTHX_ imp_dbh_t *imp_dbh, const char * message, ...);
static void pg_warn (void * arg, const char * message);
static ExecStatusType _result(pTHX_ imp_dbh_t *imp_dbh, const char *sql);
static ExecStatusType _sqlstate(pTHX_ imp_dbh_t *imp_dbh, PGresult *result);
static int pg_db_rollback_commit (pTHX_ SV *dbh, imp_dbh_t *imp_dbh, int action);
static void pg_st_split_statement (pTHX_ imp_sth_t *imp_sth, int version, char *statement);
static int pg_st_prepare_statement (pTHX_ SV *sth, imp_sth_t *imp_sth);
static int is_high_bit_set(pTHX_ const unsigned char *val, STRLEN size);
static int pg_st_deallocate_statement(pTHX_ SV *sth, imp_sth_t *imp_sth);
static PGTransactionStatusType pg_db_txn_status (pTHX_ imp_dbh_t *imp_dbh);
static int pg_db_start_txn (pTHX_ SV *dbh, imp_dbh_t *imp_dbh);
static int handle_old_async(pTHX_ SV * handle, imp_dbh_t * imp_dbh, const int asyncflag);
static const char const *_error_message(const imp_dbh_t *imp_dbh);
static int coro_wait_for (pTHX_ imp_dbh_t *imp_dbh, const char *func);
static PGconn * coro_PQconnectdb(pTHX_ imp_dbh_t *imp_dbh, const char *conn_str);
static PGresult *coro_read_result(pTHX_ imp_dbh_t *imp_dbh);
static int coro_flush(pTHX_ imp_dbh_t *imp_dbh);
static void coro_cleanup (pTHX_ imp_dbh_t *imp_dbh);
static SV *coro_init (pTHX_ imp_dbh_t *imp_dbh, PGconn *conn);
static PGresult *coro_PQexec (pTHX_ imp_dbh_t *imp_dbh, const char *sql);
static PGresult *coro_PQexecParams (pTHX_ imp_sth_t *imp_sth, const char *statement);
static PGresult *coro_PQprepare (pTHX_ imp_sth_t *imp_sth, const char *statement, int params);
static PGresult *coro_PQexecPrepared (pTHX_ imp_sth_t *imp_sth);
static const char *READABLE = "readable";
static const char *WRITABLE = "writable";
#define CORO_WAIT_FOR_READABLE coro_wait_for(aTHX_ imp_dbh, READABLE)
#define CORO_WAIT_FOR_WRITABLE coro_wait_for(aTHX_ imp_dbh, WRITABLE)
/* ================================================================== */
void dbd_init (dbistate_t *dbistate)
{
dTHX;
DBIS = dbistate;
}
/* ================================================================== */
int dbd_db_login (SV * dbh, imp_dbh_t * imp_dbh, char * dbname, char * uid, char * pwd)
{
dTHX;
char * conn_str;
char * dest;
bool inquote = DBDPG_FALSE;
STRLEN connect_string_size;
ConnStatusType connstatus;
if (TSTART) TRC(DBILOGFP, "%sBegin dbd_db_login\n", THEADER);
/* DBD::Pg syntax: 'dbname=dbname;host=host;port=port', 'User', 'Pass' */
/* libpq syntax: 'dbname=dbname host=host port=port user=uid password=pwd' */
/* Figure out how large our connection string is going to be */
connect_string_size = strlen(dbname);
if (*uid)
connect_string_size += strlen("user='' ") + 2*strlen(uid);
if (*pwd)
connect_string_size += strlen("password='' ") + 2*strlen(pwd);
New(0, conn_str, connect_string_size+1, char); /* freed below */
/* Change all semi-colons in dbname to a space, unless single-quoted */
dest = conn_str;
while (*dbname != '\0') {
if (';' == *dbname && !inquote)
*dest++ = ' ';
else {
if ('\'' == *dbname)
inquote = !inquote;
*dest++ = *dbname;
}
dbname++;
}
*dest = '\0';
/* Add in the user and/or password if they exist, escaping single quotes and backslashes */
if (*uid) {
strcat(conn_str, " user='");
dest = conn_str;
while(*dest != '\0')
dest++;
while(*uid != '\0') {
if ('\''==*uid || '\\'==*uid)
*(dest++)='\\';
*(dest++)=*(uid++);
}
*dest = '\0';
strcat(conn_str, "'");
}
if (*pwd) {
strcat(conn_str, " password='");
dest = conn_str;
while(*dest != '\0')
dest++;
while(*pwd != '\0') {
if ('\''==*pwd || '\\'==*pwd)
*(dest++)='\\';
*(dest++)=*(pwd++);
}
*dest = '\0';
strcat(conn_str, "'");
}
/* Remove any stored savepoint information */
if (imp_dbh->savepoints) {
av_undef(imp_dbh->savepoints);
sv_free((SV *)imp_dbh->savepoints);
}
imp_dbh->savepoints = newAV(); /* freed in dbd_db_destroy */
/* Close any old connection and free memory, just in case */
if (imp_dbh->conn) {
TRACE_PQFINISH;
PQfinish(imp_dbh->conn);
}
/* Attempt the connection to the database */
if (TLOGIN) TRC(DBILOGFP, "%sLogin connection string: (%s)\n", THEADER, conn_str);
imp_dbh->conn = coro_PQconnectdb(aTHX_ imp_dbh, conn_str);
if (TLOGIN) TRC(DBILOGFP, "%sConnection complete\n", THEADER);
Safefree(conn_str);
/* Set the initial sqlstate */
Renew(imp_dbh->sqlstate, 6, char); /* freed in dbd_db_destroy */
strncpy(imp_dbh->sqlstate, "25P01", 6); /* "NO ACTIVE SQL TRANSACTION" */
/* Check to see that the backend connection was successfully made */
TRACE_PQSTATUS;
connstatus = PQstatus(imp_dbh->conn);
if (CONNECTION_OK != connstatus) {
pg_error(aTHX_ dbh, connstatus, _error_message(imp_dbh));
strncpy(imp_dbh->sqlstate, "08006", 6); /* "CONNECTION FAILURE" */
TRACE_PQFINISH;
PQfinish(imp_dbh->conn);
sv_free((SV *)imp_dbh->savepoints);
if (TEND) TRC(DBILOGFP, "%sEnd dbd_db_login (error)\n", THEADER);
return 0;
}
/* Call the pg_warn function anytime this connection raises a notice */
TRACE_PQSETNOTICEPROCESSOR;
(void)PQsetNoticeProcessor(imp_dbh->conn, pg_warn, (void *)SvRV(dbh));
/* Figure out what protocol this server is using (most likely 3) */
TRACE_PQPROTOCOLVERSION;
imp_dbh->pg_protocol = PQprotocolVersion(imp_dbh->conn);
/* Figure out this particular backend's version */
imp_dbh->pg_server_version = -1;
#if PGLIBVERSION >= 80000
TRACE_PQSERVERVERSION;
imp_dbh->pg_server_version = PQserverVersion(imp_dbh->conn);
#endif
if (imp_dbh->pg_server_version <= 0) {
int cnt, vmaj, vmin, vrev;
cnt = sscanf(PQparameterStatus(imp_dbh->conn, "server_version"), "%d.%d.%d",
&vmaj, &vmin, &vrev);
if (cnt >= 2) {
if (cnt == 2) /* Account for devel version e.g. 8.3beta1 */
vrev = 0;
imp_dbh->pg_server_version = (100 * vmaj + vmin) * 100 + vrev;
}
}
imp_dbh->pg_bool_tf = DBDPG_FALSE;
imp_dbh->pg_enable_utf8 = DBDPG_FALSE;
imp_dbh->prepare_now = DBDPG_FALSE;
imp_dbh->done_begin = DBDPG_FALSE;
imp_dbh->dollaronly = DBDPG_FALSE;
imp_dbh->expand_array = DBDPG_TRUE;
imp_dbh->txn_read_only = DBDPG_FALSE;
imp_dbh->pid_number = getpid();
imp_dbh->prepare_number = 1;
imp_dbh->copystate = 0;
imp_dbh->pg_errorlevel = 1; /* Default */
imp_dbh->async_status = 0;
imp_dbh->async_sth = NULL;
/* If using server version 7.4, switch to "smart" */
imp_dbh->server_prepare = PGLIBVERSION >= 80000 ? 1 : 2;
/* Tell DBI that we should call destroy when the handle dies */
DBIc_IMPSET_on(imp_dbh);
/* Tell DBI that we should call disconnect when the handle dies */
DBIc_ACTIVE_on(imp_dbh);
if (TEND) TRC(DBILOGFP, "%sEnd dbd_db_login\n", THEADER);
return 1;
} /* end of dbd_db_login */
/* ================================================================== */
/* Database specific error handling. */
static void pg_error (pTHX_ SV * h, int error_num, const char * error_msg)
{
D_imp_xxh(h);
size_t error_len;
imp_dbh_t * imp_dbh = (imp_dbh_t *)(DBIc_TYPE(imp_xxh) == DBIt_ST ? DBIc_PARENT_COM(imp_xxh) : imp_xxh);
if (TSTART) TRC(DBILOGFP, "%sBegin pg_error (message: %s number: %d)\n",
THEADER, error_msg, error_num);
error_len = strlen(error_msg);
/* Strip final newline so line number appears for warn/die */
if (error_len > 0 && error_msg[error_len-1] == 10)
error_len--;
sv_setiv(DBIc_ERR(imp_xxh), (IV)error_num);
sv_setpvn(DBIc_ERRSTR(imp_xxh), error_msg, error_len);
sv_setpv(DBIc_STATE(imp_xxh), (char*)imp_dbh->sqlstate);
if (TEND) TRC(DBILOGFP, "%sEnd pg_error\n", THEADER);
} /* end of pg_error */
/* ================================================================== */
/* Turn database notices into perl warnings for proper handling. */
static void _pg_warn (pTHX_ imp_dbh_t *imp_dbh, const char *message, ...)
{
va_list ap;
if (TSTART) TRC(DBILOGFP, "%sBegin pg_warn (message: %s DBIc_WARN: %d PrintWarn: %d)\n",
THEADER,
message, DBIc_WARN(imp_dbh) ? 1 : 0,
DBIc_is(imp_dbh, DBIcf_PrintWarn) ? 1 : 0);
if (DBIc_WARN(imp_dbh) && DBIc_is(imp_dbh, DBIcf_PrintWarn)) {
va_start(ap,message);
vwarn(message, &ap);
va_end(ap);
}
if (TEND) TRC(DBILOGFP, "%sEnd pg_warn\n", THEADER);
}
static void pg_warn (void * arg, const char * message)
{
dTHX;
SV *tmp;
tmp = sv_2mortal(newRV((SV *)arg));
/* This fun little bit is to prevent a core dump when the following occurs:
client_min_messages is set to DEBUG3 or greater, and we exit without a disconnect.
DBI issues a 'rollback' in this case, which causes some debugging messages
to be emitted from the server (such as "StartTransactionCommand"). However, we can't do
the D_imp_dbh call anymore, because the underlying dbh has lost some of its magic.
Unfortunately, DBI then coredumps in dbh_getcom2. Hence, we make sure that the
object passed in is still 'valid', in that a certain level has a ROK flag.
If it's not, we just return without issuing any warning, as we can't check things
like DBIc_WARN. There may be a better way of handling all this, and we may want to
default to always warn() - input welcome.
*/
if (!SvROK(SvMAGIC(SvRV(tmp))->mg_obj)) {
return;
}
else {
D_imp_dbh(tmp);
_pg_warn(aTHX_ imp_dbh, message);
}
} /* end of pg_warn */
/* ================================================================== */
/* Quick command executor used throughout this file */
static ExecStatusType _result(pTHX_ imp_dbh_t * imp_dbh, const char * sql)
{
PGresult * result;
ExecStatusType status;
if (TSTART) TRC(DBILOGFP, "%sBegin _result (sql: %s)\n", THEADER, sql);
if (TSQL) TRC(DBILOGFP, "%s;\n\n", sql);
result = coro_PQexec(aTHX_ imp_dbh, sql);
status = _sqlstate(aTHX_ imp_dbh, result);
TRACE_PQCLEAR;
PQclear(result);
if (TEND) TRC(DBILOGFP, "%sEnd _result\n", THEADER);
return status;
} /* end of _result */
/* ================================================================== */
/* Set the SQLSTATE based on a result, returns the status */
static ExecStatusType _sqlstate(pTHX_ imp_dbh_t * imp_dbh, PGresult * result)
{
ExecStatusType status = PGRES_FATAL_ERROR; /* until proven otherwise */
bool stateset = DBDPG_FALSE;
const char *diag_sqlstate;
if (TSTART) TRC(DBILOGFP, "%sBegin _sqlstate\n", THEADER);
switch (imp_dbh->coro_error) {
case COERR_OK:
break;
case COERR_PGRESULT:
imp_dbh->coro_error = COERR_OK; /* clear once read */
break;
case COERR_INTERRUPTED:
strncpy(imp_dbh->sqlstate, "58030", 6); /* IO ERROR */
status = PGRES_FATAL_ERROR;
goto finish_sqlstate;
default:
strncpy(imp_dbh->sqlstate, "08000", 6); /* CONNECTION EXCEPTION */
status = PGRES_FATAL_ERROR;
goto finish_sqlstate;
}
/*
Because PQresultErrorField may not work completely when an error occurs, and
we are connecting over TCP/IP, only set it here if non-null, and fall through
to a better default value below.
*/
if (result) {
status = imp_dbh->last_result_status;
TRACE_PQRESULTERRORFIELD;
diag_sqlstate = PQresultErrorField(result,PG_DIAG_SQLSTATE);
if (diag_sqlstate) {
strncpy(imp_dbh->sqlstate, diag_sqlstate, 5);
imp_dbh->sqlstate[5] = '\0';
stateset = DBDPG_TRUE;
}
}
if (!stateset) {
/* Do our best to map the status result to a sqlstate code */
switch (status) {
case PGRES_EMPTY_QUERY:
case PGRES_COMMAND_OK:
case PGRES_TUPLES_OK:
case PGRES_COPY_OUT:
case PGRES_COPY_IN:
strncpy(imp_dbh->sqlstate, "00000", 6); /* SUCCESSFUL COMPLETION */
break;
case PGRES_BAD_RESPONSE:
case PGRES_NONFATAL_ERROR:
strncpy(imp_dbh->sqlstate, "01000", 6); /* WARNING */
break;
case PGRES_FATAL_ERROR:
if (!result) { /* libpq returned null - some sort of connection problem */
strncpy(imp_dbh->sqlstate, "08000", 6); /* CONNECTION EXCEPTION */
break;
}
/*@fallthrough@*/
default:
strncpy(imp_dbh->sqlstate, "22000", 6); /* DATA EXCEPTION */
break;
}
}
finish_sqlstate:
if (TEND) TRC(DBILOGFP, "%sEnd _sqlstate (imp_dbh->sqlstate: %s)\n",
THEADER, imp_dbh->sqlstate);
if (TRACE7) TRC(DBILOGFP, "%s_sqlstate txn_status is %d\n",
THEADER, pg_db_txn_status(aTHX_ imp_dbh));
imp_dbh->last_result_err = NULL;
imp_dbh->last_result_status = 0;
if (TEND) TRC(DBILOGFP, "%sEnd _sqlstate (status: %d)\n", THEADER, status);
return status;
} /* end of _sqlstate */
/* ================================================================== */
int dbd_db_ping (SV * dbh)
{
dTHX;
D_imp_dbh(dbh);
PGTransactionStatusType tstatus;
ExecStatusType status;
if (TSTART) TRC(DBILOGFP, "%sBegin dbd_db_ping\n", THEADER);
if (NULL == imp_dbh->conn) {
if (TEND) TRC(DBILOGFP, "%sEnd dbd_db_ping (error: no connection)\n", THEADER);
return -1;
}
if (imp_dbh->coro_error == COERR_PGFATAL) {
if (TEND || TCORO) TRC(DBILOGFP, "%sEnd dbd_pg_ping (result: -2 coro)\n", THEADER);
return -2;
}
else if (imp_dbh->coro_error != COERR_OK) {
if (TEND || TCORO) TRC(DBILOGFP, "%sEnd dbd_pg_ping (result: -4 coro)\n", THEADER);
return -4;
}
if (imp_dbh->copystate) {
if (TEND) TRC(DBILOGFP, "%sEnd dbd_pg_ping (result: 2 copy in progress)\n", THEADER);
return 2;
}
tstatus = pg_db_txn_status(aTHX_ imp_dbh);
if (TRACE5) TRC(DBILOGFP, "%sdbd_db_ping txn_status is %d\n", THEADER, tstatus);
if (tstatus >= 4) { /* Unknown, so we err on the side of "bad" */
if (TEND) TRC(DBILOGFP, "%sEnd dbd_pg_ping (result: -2 unknown/bad)\n", THEADER);
return -2;
}
if (tstatus != 0) {/* 2=active, 3=intrans, 4=inerror */
if (TEND) TRC(DBILOGFP, "%sEnd dbd_pg_ping (result: %d)\n", THEADER, 1+tstatus);
return 1+tstatus;
}
/* Even though it may be reported as normal, we have to make sure by issuing a command */
status = _result(aTHX_ imp_dbh, "SELECT 'DBD::Pg ping test'");
if (PGRES_TUPLES_OK == status) {
if (TEND) TRC(DBILOGFP, "%sEnd dbd_pg_ping (result: 1 PGRES_TUPLES_OK)\n", THEADER);
return 1;
}
if (TEND) TRC(DBILOGFP, "%sEnd dbd_pg_ping (result: -3)\n", THEADER);
return -3;
} /* end of dbd_db_ping */
/* ================================================================== */
static PGTransactionStatusType pg_db_txn_status (pTHX_ imp_dbh_t * imp_dbh)
{
if (TSTART) TRC(DBILOGFP, "%sBegin PGTransactionStatusType\n", THEADER);
TRACE_PQTRANSACTIONSTATUS;
return PQtransactionStatus(imp_dbh->conn);
} /* end of pg_db_txn_status */
/* rollback and commit share so much code they get one function: */
/* ================================================================== */
static int pg_db_rollback_commit (pTHX_ SV * dbh, imp_dbh_t * imp_dbh, int action)
{
PGTransactionStatusType tstatus;
ExecStatusType status;
if (TSTART) TRC(DBILOGFP, "%sBegin pg_db_rollback_commit (action: %s AutoCommit: %d BegunWork: %d, copystate: %d)\n",
THEADER,
action ? "commit" : "rollback",
DBIc_is(imp_dbh, DBIcf_AutoCommit) ? 1 : 0,
DBIc_is(imp_dbh, DBIcf_BegunWork) ? 1 : 0,
imp_dbh->copystate);
/* No action if AutoCommit = on or the connection is invalid */
if ((NULL == imp_dbh->conn) || (DBIc_has(imp_dbh, DBIcf_AutoCommit))) {
if (TEND) TRC(DBILOGFP, "%sEnd pg_db_rollback_commit (result: 0)\n", THEADER);
return 0;
}
/* We only perform these actions if we need to. For newer servers, we
ask it for the status directly and double-check things */
tstatus = pg_db_txn_status(aTHX_ imp_dbh);
if (TRACE4) TRC(DBILOGFP, "%sdbd_db_%s txn_status is %d\n", THEADER, action ? "commit" : "rollback", tstatus);
if (PQTRANS_IDLE == tstatus) { /* Not in a transaction */
if (imp_dbh->done_begin) {
/* We think we ARE in a transaction but we really are not */
if (TRACEWARN)
TRC(DBILOGFP, "%sWarning: invalid done_begin turned off\n", THEADER);
imp_dbh->done_begin = DBDPG_FALSE;
}
}
else if (PQTRANS_ACTIVE == tstatus) { /* Still active - probably in a COPY */
if (TRACEWARN)
TRC(DBILOGFP,"%sCommand in progress, so no done_begin checking!\n", THEADER);
}
else if (PQTRANS_INTRANS == tstatus || PQTRANS_INERROR == tstatus) { /* In a (possibly failed) transaction */
if (!imp_dbh->done_begin) {
/* We think we are NOT in a transaction but we really are */
if (TRACEWARN)
TRC(DBILOGFP, "%sWarning: invalid done_begin turned on\n", THEADER);
imp_dbh->done_begin = DBDPG_TRUE;
}
}
else { /* Something is wrong: transaction status unknown */
if (TRACEWARN)
TRC(DBILOGFP, "%sWarning: cannot determine transaction status\n", THEADER);
}
/* If begin_work has been called, turn AutoCommit back on and BegunWork off */
if (DBIc_has(imp_dbh, DBIcf_BegunWork)!=0) {
DBIc_set(imp_dbh, DBIcf_AutoCommit, 1);
DBIc_set(imp_dbh, DBIcf_BegunWork, 0);
}
if (!imp_dbh->done_begin) {
if (TEND) TRC(DBILOGFP, "%sEnd pg_db_rollback_commit (result: 1)\n", THEADER);
return 1;
}
if (imp_dbh->copystate) {
if (pg_db_endcopy(aTHX_ dbh)!=-1)
_pg_warn(aTHX_ imp_dbh, "Warning: endcopy failed during %s", action ? "commit" : "rollback");
}
status = _result(aTHX_ imp_dbh, action ? "commit" : "rollback");
/* Set this early, for scripts that continue despite the error below */
imp_dbh->done_begin = DBDPG_FALSE;
if (PGRES_COMMAND_OK != status) {
pg_error(aTHX_ dbh, status, _error_message(imp_dbh));
if (TEND) TRC(DBILOGFP, "%sEnd pg_db_rollback_commit (error: status not OK)\n", THEADER);
return 0;
}
/* We just did a rollback or a commit, so savepoints are not relevant, and we cannot be in a PGRES_COPY state */
av_undef(imp_dbh->savepoints);
imp_dbh->copystate=0;
if (TEND) TRC(DBILOGFP, "%sEnd pg_db_rollback_commit (result: 1)\n", THEADER);
return 1;
} /* end of pg_db_rollback_commit */
/* ================================================================== */
int dbd_db_commit (SV * dbh, imp_dbh_t * imp_dbh)
{
dTHX;
if (TSTART) TRC(DBILOGFP, "%sBegin dbd_db_commit\n", THEADER);
return pg_db_rollback_commit(aTHX_ dbh, imp_dbh, 1);
}
/* ================================================================== */
int dbd_db_rollback (SV * dbh, imp_dbh_t * imp_dbh)
{
dTHX;
if (TSTART) TRC(DBILOGFP, "%sBegin dbd_db_rollback\n", THEADER);
return pg_db_rollback_commit(aTHX_ dbh, imp_dbh, 0);
}
/* ================================================================== */
int dbd_db_disconnect (SV * dbh, imp_dbh_t * imp_dbh)
{
dTHX;
if (TSTART) TRC(DBILOGFP, "%sBegin dbd_db_disconnect\n", THEADER);
/* We assume that disconnect will always work
since most errors imply already disconnected. */
DBIc_ACTIVE_off(imp_dbh);
if (NULL != imp_dbh->conn) {
/* Attempt a rollback */
if (0 != dbd_db_rollback(dbh, imp_dbh) && TRACE5)
TRC(DBILOGFP, "%sdbd_db_disconnect: AutoCommit=off -> rollback\n", THEADER);
TRACE_PQFINISH;
PQfinish(imp_dbh->conn);
imp_dbh->conn = NULL;
}
/* We don't free imp_dbh since a reference still exists */
/* The DESTROY method is the only one to 'free' memory. */
/* Note that statement objects may still exists for this dbh! */
if (TLOGIN) TRC(DBILOGFP, "%sDisconnection complete\n", THEADER);
if (TEND) TRC(DBILOGFP, "%sEnd dbd_db_disconnect\n", THEADER);
return 1;
} /* end of dbd_db_disconnect */
/* ================================================================== */
void dbd_db_destroy (SV * dbh, imp_dbh_t * imp_dbh)
{
dTHX;
if (TSTART) TRC(DBILOGFP, "%sBegin dbd_db_destroy\n", THEADER);
if (DBIc_ACTIVE(imp_dbh))
(void)dbd_db_disconnect(dbh, imp_dbh);
if (imp_dbh->async_sth) { /* Just in case */
if (imp_dbh->async_sth->result) {
TRACE_PQCLEAR;
PQclear(imp_dbh->async_sth->result);
}
imp_dbh->async_sth = NULL;
}
av_undef(imp_dbh->savepoints);
sv_free((SV *)imp_dbh->savepoints);
Safefree(imp_dbh->sqlstate);
coro_cleanup(aTHX_ imp_dbh);
DBIc_IMPSET_off(imp_dbh);
if (TEND) TRC(DBILOGFP, "%sEnd dbd_db_destroy\n", THEADER);
} /* end of dbd_db_destroy */
/* ================================================================== */
SV * dbd_db_FETCH_attrib (SV * dbh, imp_dbh_t * imp_dbh, SV * keysv)
{
dTHX;
STRLEN kl;
char * key = SvPV(keysv,kl);
SV * retsv = Nullsv;
if (TSTART) TRC(DBILOGFP, "%sBegin dbd_db_FETCH (key: %s)\n", THEADER, dbh ? key : key);
switch (kl) {
case 5: /* pg_db */
if (strEQ("pg_db", key)) {
TRACE_PQDB;
retsv = newSVpv(PQdb(imp_dbh->conn),0);
}
break;
case 6: /* pg_pid */
if (strEQ("pg_pid", key)) {
TRACE_PQBACKENDPID;
retsv = newSViv((IV)PQbackendPID(imp_dbh->conn));
}
break;
case 7: /* pg_user pg_pass pg_port pg_host */
if (strEQ("pg_user", key)) {
TRACE_PQUSER;
retsv = newSVpv(PQuser(imp_dbh->conn),0);
}
else if (strEQ("pg_pass", key)) {
TRACE_PQPASS;
retsv = newSVpv(PQpass(imp_dbh->conn),0);
}
else if (strEQ("pg_port", key)) {
TRACE_PQPORT;
retsv = newSVpv(PQport(imp_dbh->conn),0);
}
else if (strEQ("pg_host", key)) {
TRACE_PQHOST;
retsv = PQhost(imp_dbh->conn) ? newSVpv(PQhost(imp_dbh->conn),0) : Nullsv;
}
break;
case 9: /* pg_socket */
if (strEQ("pg_socket", key)) {
TRACE_PQSOCKET;
retsv = newSViv(imp_dbh->socket_fd);
}
break;
case 10: /* AutoCommit pg_bool_tf pg_pid_number pg_options */
if (strEQ("AutoCommit", key))
retsv = boolSV(DBIc_has(imp_dbh, DBIcf_AutoCommit));
else if (strEQ("pg_bool_tf", key))
retsv = newSViv((IV)imp_dbh->pg_bool_tf);
else if (strEQ("pg_pid_number", key)) /* Undocumented on purpose */
retsv = newSViv((IV)imp_dbh->pid_number);
else if (strEQ("pg_options", key)) {
TRACE_PQOPTIONS;
retsv = newSVpv(PQoptions(imp_dbh->conn),0);
}
break;
case 11: /* pg_INV_READ pg_protocol */
if (strEQ("pg_INV_READ", key))
retsv = newSViv((IV)INV_READ);
else if (strEQ("pg_protocol", key))
retsv = newSViv((IV)imp_dbh->pg_protocol);
break;
case 12: /* pg_INV_WRITE */
if (strEQ("pg_INV_WRITE", key))
retsv = newSViv((IV) INV_WRITE );
break;
case 13: /* pg_errorlevel */
if (strEQ("pg_errorlevel", key))
retsv = newSViv((IV)imp_dbh->pg_errorlevel);
break;
case 14: /* pg_lib_version pg_prepare_now pg_enable_utf8 */
if (strEQ("pg_lib_version", key))
retsv = newSViv((IV) PGLIBVERSION );
else if (strEQ("pg_prepare_now", key))
retsv = newSViv((IV)imp_dbh->prepare_now);
#ifdef is_utf8_string
else if (strEQ("pg_enable_utf8", key))
retsv = newSViv((IV)imp_dbh->pg_enable_utf8);
#endif
break;
case 15: /* pg_default_port pg_async_status pg_expand_array */
if (strEQ("pg_default_port", key))
retsv = newSViv((IV) PGDEFPORT );
else if (strEQ("pg_async_status", key))
retsv = newSViv((IV)imp_dbh->async_status);
else if (strEQ("pg_expand_array", key))
retsv = newSViv((IV)imp_dbh->expand_array);
break;
case 17: /* pg_server_prepare pg_server_version */
if (strEQ("pg_server_prepare", key))
retsv = newSViv((IV)imp_dbh->server_prepare);
else if (strEQ("pg_server_version", key))
retsv = newSViv((IV)imp_dbh->pg_server_version);
break;
case 25: /* pg_placeholder_dollaronly */
if (strEQ("pg_placeholder_dollaronly", key))
retsv = newSViv((IV)imp_dbh->dollaronly);
break;
case 30: /* pg_standard_conforming_strings */
if (strEQ("pg_standard_conforming_strings", key)) {
if (NULL != PQparameterStatus(imp_dbh->conn, "standard_conforming_strings")) {
retsv = newSVpv(PQparameterStatus(imp_dbh->conn,"standard_conforming_strings"),0);
}
}
break;
}
if (TEND) TRC(DBILOGFP, "%sEnd dbd_db_FETCH_attrib\n", THEADER);
if (!retsv)
return Nullsv;
if (retsv == &sv_yes || retsv == &sv_no) {
return retsv; /* no need to mortalize yes or no */
}
return sv_2mortal(retsv);
} /* end of dbd_db_FETCH_attrib */
/* ================================================================== */
int dbd_db_STORE_attrib (SV * dbh, imp_dbh_t * imp_dbh, SV * keysv, SV * valuesv)
{
dTHX;
STRLEN kl;
char * key = SvPV(keysv,kl);
unsigned int newval = SvTRUE(valuesv);
int retval = 0;
if (TSTART) TRC(DBILOGFP, "%sBegin dbd_db_STORE (key: %s newval: %d kl:%d)\n", THEADER, key, newval, kl);
switch (kl) {
case 8: /* ReadOnly */
if (strEQ("ReadOnly", key)) {
if (DBIc_has(imp_dbh, DBIcf_AutoCommit)) {
warn("Setting ReadOnly in AutoCommit mode has no effect");
}
imp_dbh->txn_read_only = newval ? DBDPG_TRUE : DBDPG_FALSE;
retval = 1;
}
break;
case 10: /* AutoCommit pg_bool_tf */
if (strEQ("AutoCommit", key)) {
if (newval != DBIc_has(imp_dbh, DBIcf_AutoCommit)) {
if (newval!=0) { /* It was off but is now on, so do a final commit */
if (0!=dbd_db_commit(dbh, imp_dbh) && TRACE4)
TRC(DBILOGFP, "%sSetting AutoCommit to 'on' forced a commit\n", THEADER);
}
DBIc_set(imp_dbh, DBIcf_AutoCommit, newval);
}
retval = 1;
}
else if (strEQ("pg_bool_tf", key)) {
imp_dbh->pg_bool_tf = newval!=0 ? DBDPG_TRUE : DBDPG_FALSE;
retval = 1;
}
break;
case 13: /* pg_errorlevel */
if (strEQ("pg_errorlevel", key)) {
if (SvOK(valuesv)) {
newval = (unsigned)SvIV(valuesv);
}
/* Default to "1" if an invalid value is passed in */
imp_dbh->pg_errorlevel = 0==newval ? 0 : 2==newval ? 2 : 1;
TRACE_PQSETERRORVERBOSITY;
(void)PQsetErrorVerbosity(imp_dbh->conn, (PGVerbosity)imp_dbh->pg_errorlevel);
if (TRACE5)
TRC(DBILOGFP, "%sReset error verbosity to %d\n", THEADER, imp_dbh->pg_errorlevel);
retval = 1;
}
break;
case 14: /* pg_prepare_now pg_enable_utf8 */
if (strEQ("pg_prepare_now", key)) {
imp_dbh->prepare_now = newval ? DBDPG_TRUE : DBDPG_FALSE;
retval = 1;
}
#ifdef is_utf8_string
else if (strEQ("pg_enable_utf8", key)) {
imp_dbh->pg_enable_utf8 = newval!=0 ? DBDPG_TRUE : DBDPG_FALSE;
retval = 1;
}
#endif
break;
case 15: /* pg_expand_array */
if (strEQ("pg_expand_array", key)) {
imp_dbh->expand_array = newval ? DBDPG_TRUE : DBDPG_FALSE;
retval = 1;
}
break;
case 17: /* pg_server_prepare */
if (strEQ("pg_server_prepare", key)) {
if (SvOK(valuesv)) {
newval = (unsigned)SvIV(valuesv);
}
/* Default to "2" if an invalid value is passed in */
imp_dbh->server_prepare = 0==newval ? 0 : 1==newval ? 1 : 2;
retval = 1;
}
break;
case 25: /* pg_placeholder_dollaronly */
if (strEQ("pg_placeholder_dollaronly", key)) {
imp_dbh->dollaronly = newval ? DBDPG_TRUE : DBDPG_FALSE;
retval = 1;
}
break;
}
if (TEND) TRC(DBILOGFP, "%sEnd dbd_db_STORE_attrib\n", THEADER);
return retval;
} /* end of dbd_db_STORE_attrib */
/* ================================================================== */
SV * dbd_st_FETCH_attrib (SV * sth, imp_sth_t * imp_sth, SV * keysv)
{
dTHX;
STRLEN kl;
char * key = SvPV(keysv,kl);
SV * retsv = Nullsv;
int fields, x;
if (TSTART) TRC(DBILOGFP, "%sBegin dbd_st_FETCH (key: %s)\n", THEADER, key);
/* Some can be done before we have a result: */
switch (kl) {
case 8: /* pg_bound */
if (strEQ("pg_bound", key)) {
HV *pvhv = newHV();
ph_t *currph;
int i;
for (i=0,currph=imp_sth->ph; NULL != currph; currph=currph->nextph,i++) {
(void)hv_store_ent
(pvhv,
(3==imp_sth->placeholder_type ? newSVpv(currph->fooname,0) : newSViv(i+1)),
newSViv(NULL == currph->bind_type ? 0 : 1), 0);
}
retsv = newRV_noinc((SV*)pvhv);
}
break;
case 9: /* pg_direct */
if (strEQ("pg_direct", key))
retsv = newSViv((IV)imp_sth->direct);
break;
case 10: /* ParamTypes */
if (strEQ("ParamTypes", key)) {
HV *pvhv = newHV();
ph_t *currph;
int i;
for (i=0,currph=imp_sth->ph; NULL != currph; currph=currph->nextph,i++) {
if (NULL == currph->bind_type) {