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pgsql_driver.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Edin Kadribasic <[email protected]> |
| Ilia Alshanestsky <[email protected]> |
| Wez Furlong <[email protected]> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "ext/standard/php_string.h"
#include "main/php_network.h"
#include "pdo/php_pdo.h"
#include "pdo/php_pdo_driver.h"
#include "pdo/php_pdo_error.h"
#include "ext/standard/file.h"
#include "php_pdo_pgsql.h"
#include "php_pdo_pgsql_int.h"
#include "zend_exceptions.h"
#include "pgsql_driver_arginfo.h"
static bool pgsql_handle_in_transaction(pdo_dbh_t *dbh);
static char * _pdo_pgsql_trim_message(const char *message, int persistent)
{
size_t i = strlen(message)-1;
char *tmp;
if (i>1 && (message[i-1] == '\r' || message[i-1] == '\n') && message[i] == '.') {
--i;
}
while (i>0 && (message[i] == '\r' || message[i] == '\n')) {
--i;
}
++i;
tmp = pemalloc(i + 1, persistent);
memcpy(tmp, message, i);
tmp[i] = '\0';
return tmp;
}
static zend_string* _pdo_pgsql_escape_credentials(char *str)
{
if (str) {
return php_addcslashes_str(str, strlen(str), "\\'", sizeof("\\'"));
}
return NULL;
}
int _pdo_pgsql_error(pdo_dbh_t *dbh, pdo_stmt_t *stmt, int errcode, const char *sqlstate, const char *msg, const char *file, int line) /* {{{ */
{
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
pdo_error_type *pdo_err = stmt ? &stmt->error_code : &dbh->error_code;
pdo_pgsql_error_info *einfo = &H->einfo;
char *errmsg = PQerrorMessage(H->server);
einfo->errcode = errcode;
einfo->file = file;
einfo->line = line;
if (einfo->errmsg) {
pefree(einfo->errmsg, dbh->is_persistent);
einfo->errmsg = NULL;
}
if (sqlstate == NULL || strlen(sqlstate) >= sizeof(pdo_error_type)) {
strcpy(*pdo_err, "HY000");
}
else {
strcpy(*pdo_err, sqlstate);
}
if (msg) {
einfo->errmsg = pestrdup(msg, dbh->is_persistent);
}
else if (errmsg) {
einfo->errmsg = _pdo_pgsql_trim_message(errmsg, dbh->is_persistent);
}
if (!dbh->methods) {
pdo_throw_exception(einfo->errcode, einfo->errmsg, pdo_err);
}
return errcode;
}
/* }}} */
static void _pdo_pgsql_notice(pdo_dbh_t *dbh, const char *message) /* {{{ */
{
/* pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data; */
}
/* }}} */
static void pdo_pgsql_fetch_error_func(pdo_dbh_t *dbh, pdo_stmt_t *stmt, zval *info) /* {{{ */
{
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
pdo_pgsql_error_info *einfo = &H->einfo;
if (einfo->errcode) {
add_next_index_long(info, einfo->errcode);
} else {
/* Add null to respect expected info array structure */
add_next_index_null(info);
}
if (einfo->errmsg) {
add_next_index_string(info, einfo->errmsg);
}
}
/* }}} */
/* {{{ pdo_pgsql_create_lob_stream */
static ssize_t pgsql_lob_write(php_stream *stream, const char *buf, size_t count)
{
struct pdo_pgsql_lob_self *self = (struct pdo_pgsql_lob_self*)stream->abstract;
return lo_write(self->conn, self->lfd, (char*)buf, count);
}
static ssize_t pgsql_lob_read(php_stream *stream, char *buf, size_t count)
{
struct pdo_pgsql_lob_self *self = (struct pdo_pgsql_lob_self*)stream->abstract;
return lo_read(self->conn, self->lfd, buf, count);
}
static int pgsql_lob_close(php_stream *stream, int close_handle)
{
struct pdo_pgsql_lob_self *self = (struct pdo_pgsql_lob_self*)stream->abstract;
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)(Z_PDO_DBH_P(&self->dbh))->driver_data;
if (close_handle) {
lo_close(self->conn, self->lfd);
}
zend_hash_index_del(H->lob_streams, php_stream_get_resource_id(stream));
zval_ptr_dtor(&self->dbh);
efree(self);
return 0;
}
static int pgsql_lob_flush(php_stream *stream)
{
return 0;
}
static int pgsql_lob_seek(php_stream *stream, zend_off_t offset, int whence,
zend_off_t *newoffset)
{
struct pdo_pgsql_lob_self *self = (struct pdo_pgsql_lob_self*)stream->abstract;
#if defined(HAVE_PG_LO64) && defined(ZEND_ENABLE_ZVAL_LONG64)
zend_off_t pos = lo_lseek64(self->conn, self->lfd, offset, whence);
#else
zend_off_t pos = lo_lseek(self->conn, self->lfd, offset, whence);
#endif
*newoffset = pos;
return pos >= 0 ? 0 : -1;
}
const php_stream_ops pdo_pgsql_lob_stream_ops = {
pgsql_lob_write,
pgsql_lob_read,
pgsql_lob_close,
pgsql_lob_flush,
"pdo_pgsql lob stream",
pgsql_lob_seek,
NULL,
NULL,
NULL
};
php_stream *pdo_pgsql_create_lob_stream(zval *dbh, int lfd, Oid oid)
{
php_stream *stm;
struct pdo_pgsql_lob_self *self = ecalloc(1, sizeof(*self));
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)(Z_PDO_DBH_P(dbh))->driver_data;
ZVAL_COPY_VALUE(&self->dbh, dbh);
self->lfd = lfd;
self->oid = oid;
self->conn = H->server;
stm = php_stream_alloc(&pdo_pgsql_lob_stream_ops, self, 0, "r+b");
if (stm) {
Z_ADDREF_P(dbh);
zend_hash_index_add_ptr(H->lob_streams, php_stream_get_resource_id(stm), stm->res);
return stm;
}
efree(self);
return NULL;
}
/* }}} */
void pdo_pgsql_close_lob_streams(pdo_dbh_t *dbh)
{
zend_resource *res;
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
if (H->lob_streams) {
ZEND_HASH_REVERSE_FOREACH_PTR(H->lob_streams, res) {
if (res->type >= 0) {
zend_list_close(res);
}
} ZEND_HASH_FOREACH_END();
}
}
static void pgsql_handle_closer(pdo_dbh_t *dbh) /* {{{ */
{
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
if (H) {
if (H->lob_streams) {
pdo_pgsql_close_lob_streams(dbh);
zend_hash_destroy(H->lob_streams);
pefree(H->lob_streams, dbh->is_persistent);
H->lob_streams = NULL;
}
if (H->server) {
PQfinish(H->server);
H->server = NULL;
}
if (H->einfo.errmsg) {
pefree(H->einfo.errmsg, dbh->is_persistent);
H->einfo.errmsg = NULL;
}
pefree(H, dbh->is_persistent);
dbh->driver_data = NULL;
}
}
/* }}} */
static bool pgsql_handle_preparer(pdo_dbh_t *dbh, zend_string *sql, pdo_stmt_t *stmt, zval *driver_options)
{
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
pdo_pgsql_stmt *S = ecalloc(1, sizeof(pdo_pgsql_stmt));
int scrollable;
int ret;
zend_string *nsql = NULL;
int emulate = 0;
int execute_only = 0;
S->H = H;
stmt->driver_data = S;
stmt->methods = &pgsql_stmt_methods;
scrollable = pdo_attr_lval(driver_options, PDO_ATTR_CURSOR,
PDO_CURSOR_FWDONLY) == PDO_CURSOR_SCROLL;
if (scrollable) {
if (S->cursor_name) {
efree(S->cursor_name);
}
spprintf(&S->cursor_name, 0, "pdo_crsr_%08x", ++H->stmt_counter);
emulate = 1;
} else if (driver_options) {
if (pdo_attr_lval(driver_options, PDO_ATTR_EMULATE_PREPARES, H->emulate_prepares) == 1) {
emulate = 1;
}
if (pdo_attr_lval(driver_options, PDO_PGSQL_ATTR_DISABLE_PREPARES, H->disable_prepares) == 1) {
execute_only = 1;
}
} else {
emulate = H->disable_native_prepares || H->emulate_prepares;
execute_only = H->disable_prepares;
}
if (!emulate && PQprotocolVersion(H->server) <= 2) {
emulate = 1;
}
if (emulate) {
stmt->supports_placeholders = PDO_PLACEHOLDER_NONE;
} else {
stmt->supports_placeholders = PDO_PLACEHOLDER_NAMED;
stmt->named_rewrite_template = "$%d";
}
ret = pdo_parse_params(stmt, sql, &nsql);
if (ret == -1) {
/* couldn't grok it */
strcpy(dbh->error_code, stmt->error_code);
return false;
} else if (ret == 1) {
/* query was re-written */
S->query = nsql;
} else {
S->query = zend_string_copy(sql);
}
if (!emulate && !execute_only) {
/* prepared query: set the query name and defer the
actual prepare until the first execute call */
spprintf(&S->stmt_name, 0, "pdo_stmt_%08x", ++H->stmt_counter);
}
return true;
}
static zend_long pgsql_handle_doer(pdo_dbh_t *dbh, const zend_string *sql)
{
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
PGresult *res;
zend_long ret = 1;
ExecStatusType qs;
bool in_trans = pgsql_handle_in_transaction(dbh);
if (!(res = PQexec(H->server, ZSTR_VAL(sql)))) {
/* fatal error */
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, NULL);
return -1;
}
qs = PQresultStatus(res);
if (qs != PGRES_COMMAND_OK && qs != PGRES_TUPLES_OK) {
pdo_pgsql_error(dbh, qs, pdo_pgsql_sqlstate(res));
PQclear(res);
return -1;
}
H->pgoid = PQoidValue(res);
if (qs == PGRES_COMMAND_OK) {
ret = ZEND_ATOL(PQcmdTuples(res));
} else {
ret = Z_L(0);
}
PQclear(res);
if (in_trans && !pgsql_handle_in_transaction(dbh)) {
pdo_pgsql_close_lob_streams(dbh);
}
return ret;
}
static zend_string* pgsql_handle_quoter(pdo_dbh_t *dbh, const zend_string *unquoted, enum pdo_param_type paramtype)
{
unsigned char *escaped;
char *quoted;
size_t quotedlen;
zend_string *quoted_str;
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
size_t tmp_len;
switch (paramtype) {
case PDO_PARAM_LOB:
/* escapedlen returned by PQescapeBytea() accounts for trailing 0 */
escaped = PQescapeByteaConn(H->server, (unsigned char *)ZSTR_VAL(unquoted), ZSTR_LEN(unquoted), &tmp_len);
quotedlen = tmp_len + 1;
quoted = emalloc(quotedlen + 1);
memcpy(quoted+1, escaped, quotedlen-2);
quoted[0] = '\'';
quoted[quotedlen-1] = '\'';
quoted[quotedlen] = '\0';
PQfreemem(escaped);
break;
default:
quoted = safe_emalloc(2, ZSTR_LEN(unquoted), 3);
quoted[0] = '\'';
quotedlen = PQescapeStringConn(H->server, quoted + 1, ZSTR_VAL(unquoted), ZSTR_LEN(unquoted), NULL);
quoted[quotedlen + 1] = '\'';
quoted[quotedlen + 2] = '\0';
quotedlen += 2;
}
quoted_str = zend_string_init(quoted, quotedlen, 0);
efree(quoted);
return quoted_str;
}
static zend_string *pdo_pgsql_last_insert_id(pdo_dbh_t *dbh, const zend_string *name)
{
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
zend_string *id = NULL;
PGresult *res;
ExecStatusType status;
if (name == NULL) {
res = PQexec(H->server, "SELECT LASTVAL()");
} else {
const char *q[1];
q[0] = ZSTR_VAL(name);
res = PQexecParams(H->server, "SELECT CURRVAL($1)", 1, NULL, q, NULL, NULL, 0);
}
status = PQresultStatus(res);
if (res && (status == PGRES_TUPLES_OK)) {
id = zend_string_init((char *)PQgetvalue(res, 0, 0), PQgetlength(res, 0, 0), 0);
} else {
pdo_pgsql_error(dbh, status, pdo_pgsql_sqlstate(res));
}
if (res) {
PQclear(res);
}
return id;
}
void pdo_libpq_version(char *buf, size_t len)
{
int version = PQlibVersion();
int major = version / 10000;
if (major >= 10) {
int minor = version % 10000;
snprintf(buf, len, "%d.%d", major, minor);
} else {
int minor = version / 100 % 100;
int revision = version % 100;
snprintf(buf, len, "%d.%d.%d", major, minor, revision);
}
}
static int pdo_pgsql_get_attribute(pdo_dbh_t *dbh, zend_long attr, zval *return_value)
{
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
switch (attr) {
case PDO_ATTR_EMULATE_PREPARES:
ZVAL_BOOL(return_value, H->emulate_prepares);
break;
case PDO_PGSQL_ATTR_DISABLE_PREPARES:
ZVAL_BOOL(return_value, H->disable_prepares);
break;
case PDO_ATTR_CLIENT_VERSION: {
char buf[16];
pdo_libpq_version(buf, sizeof(buf));
ZVAL_STRING(return_value, buf);
break;
}
case PDO_ATTR_SERVER_VERSION:
if (PQprotocolVersion(H->server) >= 3) { /* PostgreSQL 7.4 or later */
ZVAL_STRING(return_value, (char*)PQparameterStatus(H->server, "server_version"));
} else /* emulate above via a query */
{
PGresult *res = PQexec(H->server, "SELECT VERSION()");
if (res && PQresultStatus(res) == PGRES_TUPLES_OK) {
ZVAL_STRING(return_value, (char *)PQgetvalue(res, 0, 0));
}
if (res) {
PQclear(res);
}
}
break;
case PDO_ATTR_CONNECTION_STATUS:
switch (PQstatus(H->server)) {
case CONNECTION_STARTED:
ZVAL_STRINGL(return_value, "Waiting for connection to be made.", sizeof("Waiting for connection to be made.")-1);
break;
case CONNECTION_MADE:
case CONNECTION_OK:
ZVAL_STRINGL(return_value, "Connection OK; waiting to send.", sizeof("Connection OK; waiting to send.")-1);
break;
case CONNECTION_AWAITING_RESPONSE:
ZVAL_STRINGL(return_value, "Waiting for a response from the server.", sizeof("Waiting for a response from the server.")-1);
break;
case CONNECTION_AUTH_OK:
ZVAL_STRINGL(return_value, "Received authentication; waiting for backend start-up to finish.", sizeof("Received authentication; waiting for backend start-up to finish.")-1);
break;
#ifdef CONNECTION_SSL_STARTUP
case CONNECTION_SSL_STARTUP:
ZVAL_STRINGL(return_value, "Negotiating SSL encryption.", sizeof("Negotiating SSL encryption.")-1);
break;
#endif
case CONNECTION_SETENV:
ZVAL_STRINGL(return_value, "Negotiating environment-driven parameter settings.", sizeof("Negotiating environment-driven parameter settings.")-1);
break;
case CONNECTION_BAD:
default:
ZVAL_STRINGL(return_value, "Bad connection.", sizeof("Bad connection.")-1);
break;
}
break;
case PDO_ATTR_SERVER_INFO: {
int spid = PQbackendPID(H->server);
zend_string *str_info =
strpprintf(0,
"PID: %d; Client Encoding: %s; Is Superuser: %s; Session Authorization: %s; Date Style: %s",
spid,
(char*)PQparameterStatus(H->server, "client_encoding"),
(char*)PQparameterStatus(H->server, "is_superuser"),
(char*)PQparameterStatus(H->server, "session_authorization"),
(char*)PQparameterStatus(H->server, "DateStyle"));
ZVAL_STR(return_value, str_info);
break;
}
default:
return 0;
}
return 1;
}
/* {{{ */
static zend_result pdo_pgsql_check_liveness(pdo_dbh_t *dbh)
{
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
if (!PQconsumeInput(H->server) || PQstatus(H->server) == CONNECTION_BAD) {
PQreset(H->server);
}
return (PQstatus(H->server) == CONNECTION_OK) ? SUCCESS : FAILURE;
}
/* }}} */
static bool pgsql_handle_in_transaction(pdo_dbh_t *dbh)
{
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
return PQtransactionStatus(H->server) > PQTRANS_IDLE;
}
static bool pdo_pgsql_transaction_cmd(const char *cmd, pdo_dbh_t *dbh)
{
pdo_pgsql_db_handle *H = (pdo_pgsql_db_handle *)dbh->driver_data;
PGresult *res;
bool ret = true;
res = PQexec(H->server, cmd);
if (PQresultStatus(res) != PGRES_COMMAND_OK) {
pdo_pgsql_error(dbh, PQresultStatus(res), pdo_pgsql_sqlstate(res));
ret = false;
}
PQclear(res);
return ret;
}
static bool pgsql_handle_begin(pdo_dbh_t *dbh)
{
return pdo_pgsql_transaction_cmd("BEGIN", dbh);
}
static bool pgsql_handle_commit(pdo_dbh_t *dbh)
{
bool ret = pdo_pgsql_transaction_cmd("COMMIT", dbh);
/* When deferred constraints are used the commit could
fail, and a ROLLBACK implicitly ran. See bug #67462 */
if (ret) {
pdo_pgsql_close_lob_streams(dbh);
} else {
dbh->in_txn = pgsql_handle_in_transaction(dbh);
}
return ret;
}
static bool pgsql_handle_rollback(pdo_dbh_t *dbh)
{
int ret = pdo_pgsql_transaction_cmd("ROLLBACK", dbh);
if (ret) {
pdo_pgsql_close_lob_streams(dbh);
}
return ret;
}
/* {{{ Returns true if the copy worked fine or false if error */
PHP_METHOD(PDO_PGSql_Ext, pgsqlCopyFromArray)
{
pdo_dbh_t *dbh;
pdo_pgsql_db_handle *H;
zval *pg_rows;
char *table_name, *pg_delim = NULL, *pg_null_as = NULL, *pg_fields = NULL;
size_t table_name_len, pg_delim_len = 0, pg_null_as_len = 0, pg_fields_len;
char *query;
PGresult *pgsql_result;
ExecStatusType status;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "sa|sss!",
&table_name, &table_name_len, &pg_rows,
&pg_delim, &pg_delim_len, &pg_null_as, &pg_null_as_len, &pg_fields, &pg_fields_len) == FAILURE) {
RETURN_THROWS();
}
if (!zend_hash_num_elements(Z_ARRVAL_P(pg_rows))) {
zend_argument_value_error(2, "cannot be empty");
RETURN_THROWS();
}
dbh = Z_PDO_DBH_P(ZEND_THIS);
PDO_CONSTRUCT_CHECK;
PDO_DBH_CLEAR_ERR();
/* using pre-9.0 syntax as PDO_pgsql is 7.4+ compatible */
if (pg_fields) {
spprintf(&query, 0, "COPY %s (%s) FROM STDIN WITH DELIMITER E'%c' NULL AS E'%s'", table_name, pg_fields, (pg_delim_len ? *pg_delim : '\t'), (pg_null_as_len ? pg_null_as : "\\\\N"));
} else {
spprintf(&query, 0, "COPY %s FROM STDIN WITH DELIMITER E'%c' NULL AS E'%s'", table_name, (pg_delim_len ? *pg_delim : '\t'), (pg_null_as_len ? pg_null_as : "\\\\N"));
}
/* Obtain db Handle */
H = (pdo_pgsql_db_handle *)dbh->driver_data;
while ((pgsql_result = PQgetResult(H->server))) {
PQclear(pgsql_result);
}
pgsql_result = PQexec(H->server, query);
efree(query);
query = NULL;
if (pgsql_result) {
status = PQresultStatus(pgsql_result);
} else {
status = (ExecStatusType) PQstatus(H->server);
}
if (status == PGRES_COPY_IN && pgsql_result) {
int command_failed = 0;
size_t buffer_len = 0;
zval *tmp;
PQclear(pgsql_result);
ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(pg_rows), tmp) {
size_t query_len;
if (!try_convert_to_string(tmp)) {
efree(query);
RETURN_THROWS();
}
if (buffer_len < Z_STRLEN_P(tmp)) {
buffer_len = Z_STRLEN_P(tmp);
query = erealloc(query, buffer_len + 2); /* room for \n\0 */
}
memcpy(query, Z_STRVAL_P(tmp), Z_STRLEN_P(tmp));
query_len = Z_STRLEN_P(tmp);
if (query[query_len - 1] != '\n') {
query[query_len++] = '\n';
}
query[query_len] = '\0';
if (PQputCopyData(H->server, query, query_len) != 1) {
efree(query);
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, NULL);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
} ZEND_HASH_FOREACH_END();
if (query) {
efree(query);
}
if (PQputCopyEnd(H->server, NULL) != 1) {
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, NULL);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
while ((pgsql_result = PQgetResult(H->server))) {
if (PGRES_COMMAND_OK != PQresultStatus(pgsql_result)) {
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, pdo_pgsql_sqlstate(pgsql_result));
command_failed = 1;
}
PQclear(pgsql_result);
}
PDO_HANDLE_DBH_ERR();
RETURN_BOOL(!command_failed);
} else {
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, pdo_pgsql_sqlstate(pgsql_result));
PQclear(pgsql_result);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Returns true if the copy worked fine or false if error */
PHP_METHOD(PDO_PGSql_Ext, pgsqlCopyFromFile)
{
pdo_dbh_t *dbh;
pdo_pgsql_db_handle *H;
char *table_name, *filename, *pg_delim = NULL, *pg_null_as = NULL, *pg_fields = NULL;
size_t table_name_len, filename_len, pg_delim_len = 0, pg_null_as_len = 0, pg_fields_len;
char *query;
PGresult *pgsql_result;
ExecStatusType status;
php_stream *stream;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "sp|sss!",
&table_name, &table_name_len, &filename, &filename_len,
&pg_delim, &pg_delim_len, &pg_null_as, &pg_null_as_len, &pg_fields, &pg_fields_len) == FAILURE) {
RETURN_THROWS();
}
/* Obtain db Handler */
dbh = Z_PDO_DBH_P(ZEND_THIS);
PDO_CONSTRUCT_CHECK;
PDO_DBH_CLEAR_ERR();
stream = php_stream_open_wrapper_ex(filename, "rb", 0, NULL, FG(default_context));
if (!stream) {
pdo_pgsql_error_msg(dbh, PGRES_FATAL_ERROR, "Unable to open the file");
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
/* using pre-9.0 syntax as PDO_pgsql is 7.4+ compatible */
if (pg_fields) {
spprintf(&query, 0, "COPY %s (%s) FROM STDIN WITH DELIMITER E'%c' NULL AS E'%s'", table_name, pg_fields, (pg_delim_len ? *pg_delim : '\t'), (pg_null_as_len ? pg_null_as : "\\\\N"));
} else {
spprintf(&query, 0, "COPY %s FROM STDIN WITH DELIMITER E'%c' NULL AS E'%s'", table_name, (pg_delim_len ? *pg_delim : '\t'), (pg_null_as_len ? pg_null_as : "\\\\N"));
}
H = (pdo_pgsql_db_handle *)dbh->driver_data;
while ((pgsql_result = PQgetResult(H->server))) {
PQclear(pgsql_result);
}
pgsql_result = PQexec(H->server, query);
efree(query);
if (pgsql_result) {
status = PQresultStatus(pgsql_result);
} else {
status = (ExecStatusType) PQstatus(H->server);
}
if (status == PGRES_COPY_IN && pgsql_result) {
char *buf;
int command_failed = 0;
size_t line_len = 0;
PQclear(pgsql_result);
while ((buf = php_stream_get_line(stream, NULL, 0, &line_len)) != NULL) {
if (PQputCopyData(H->server, buf, line_len) != 1) {
efree(buf);
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, NULL);
php_stream_close(stream);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
efree(buf);
}
php_stream_close(stream);
if (PQputCopyEnd(H->server, NULL) != 1) {
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, NULL);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
while ((pgsql_result = PQgetResult(H->server))) {
if (PGRES_COMMAND_OK != PQresultStatus(pgsql_result)) {
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, pdo_pgsql_sqlstate(pgsql_result));
command_failed = 1;
}
PQclear(pgsql_result);
}
PDO_HANDLE_DBH_ERR();
RETURN_BOOL(!command_failed);
} else {
php_stream_close(stream);
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, pdo_pgsql_sqlstate(pgsql_result));
PQclear(pgsql_result);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Returns true if the copy worked fine or false if error */
PHP_METHOD(PDO_PGSql_Ext, pgsqlCopyToFile)
{
pdo_dbh_t *dbh;
pdo_pgsql_db_handle *H;
char *table_name, *pg_delim = NULL, *pg_null_as = NULL, *pg_fields = NULL, *filename = NULL;
size_t table_name_len, pg_delim_len = 0, pg_null_as_len = 0, pg_fields_len, filename_len;
char *query;
PGresult *pgsql_result;
ExecStatusType status;
php_stream *stream;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "sp|sss!",
&table_name, &table_name_len, &filename, &filename_len,
&pg_delim, &pg_delim_len, &pg_null_as, &pg_null_as_len, &pg_fields, &pg_fields_len) == FAILURE) {
RETURN_THROWS();
}
dbh = Z_PDO_DBH_P(ZEND_THIS);
PDO_CONSTRUCT_CHECK;
PDO_DBH_CLEAR_ERR();
H = (pdo_pgsql_db_handle *)dbh->driver_data;
stream = php_stream_open_wrapper_ex(filename, "wb", 0, NULL, FG(default_context));
if (!stream) {
pdo_pgsql_error_msg(dbh, PGRES_FATAL_ERROR, "Unable to open the file for writing");
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
while ((pgsql_result = PQgetResult(H->server))) {
PQclear(pgsql_result);
}
/* using pre-9.0 syntax as PDO_pgsql is 7.4+ compatible */
if (pg_fields) {
spprintf(&query, 0, "COPY %s (%s) TO STDIN WITH DELIMITER E'%c' NULL AS E'%s'", table_name, pg_fields, (pg_delim_len ? *pg_delim : '\t'), (pg_null_as_len ? pg_null_as : "\\\\N"));
} else {
spprintf(&query, 0, "COPY %s TO STDIN WITH DELIMITER E'%c' NULL AS E'%s'", table_name, (pg_delim_len ? *pg_delim : '\t'), (pg_null_as_len ? pg_null_as : "\\\\N"));
}
pgsql_result = PQexec(H->server, query);
efree(query);
if (pgsql_result) {
status = PQresultStatus(pgsql_result);
} else {
status = (ExecStatusType) PQstatus(H->server);
}
if (status == PGRES_COPY_OUT && pgsql_result) {
PQclear(pgsql_result);
while (1) {
char *csv = NULL;
int ret = PQgetCopyData(H->server, &csv, 0);
if (ret == -1) {
break; /* done */
} else if (ret > 0) {
if (php_stream_write(stream, csv, ret) != (size_t)ret) {
pdo_pgsql_error_msg(dbh, PGRES_FATAL_ERROR, "Unable to write to file");
PQfreemem(csv);
php_stream_close(stream);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
} else {
PQfreemem(csv);
}
} else {
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, NULL);
php_stream_close(stream);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
}
php_stream_close(stream);
while ((pgsql_result = PQgetResult(H->server))) {
PQclear(pgsql_result);
}
RETURN_TRUE;
} else {
php_stream_close(stream);
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, pdo_pgsql_sqlstate(pgsql_result));
PQclear(pgsql_result);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Returns true if the copy worked fine or false if error */
PHP_METHOD(PDO_PGSql_Ext, pgsqlCopyToArray)
{
pdo_dbh_t *dbh;
pdo_pgsql_db_handle *H;
char *table_name, *pg_delim = NULL, *pg_null_as = NULL, *pg_fields = NULL;
size_t table_name_len, pg_delim_len = 0, pg_null_as_len = 0, pg_fields_len;
char *query;
PGresult *pgsql_result;
ExecStatusType status;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|sss!",
&table_name, &table_name_len,
&pg_delim, &pg_delim_len, &pg_null_as, &pg_null_as_len, &pg_fields, &pg_fields_len) == FAILURE) {
RETURN_THROWS();
}
dbh = Z_PDO_DBH_P(ZEND_THIS);
PDO_CONSTRUCT_CHECK;
PDO_DBH_CLEAR_ERR();
H = (pdo_pgsql_db_handle *)dbh->driver_data;
while ((pgsql_result = PQgetResult(H->server))) {
PQclear(pgsql_result);
}
/* using pre-9.0 syntax as PDO_pgsql is 7.4+ compatible */
if (pg_fields) {
spprintf(&query, 0, "COPY %s (%s) TO STDIN WITH DELIMITER E'%c' NULL AS E'%s'", table_name, pg_fields, (pg_delim_len ? *pg_delim : '\t'), (pg_null_as_len ? pg_null_as : "\\\\N"));
} else {
spprintf(&query, 0, "COPY %s TO STDIN WITH DELIMITER E'%c' NULL AS E'%s'", table_name, (pg_delim_len ? *pg_delim : '\t'), (pg_null_as_len ? pg_null_as : "\\\\N"));
}
pgsql_result = PQexec(H->server, query);
efree(query);
if (pgsql_result) {
status = PQresultStatus(pgsql_result);
} else {
status = (ExecStatusType) PQstatus(H->server);
}
if (status == PGRES_COPY_OUT && pgsql_result) {
PQclear(pgsql_result);
array_init(return_value);
while (1) {
char *csv = NULL;
int ret = PQgetCopyData(H->server, &csv, 0);
if (ret == -1) {
break; /* copy done */
} else if (ret > 0) {
add_next_index_stringl(return_value, csv, ret);
PQfreemem(csv);
} else {
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, NULL);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
}
while ((pgsql_result = PQgetResult(H->server))) {
PQclear(pgsql_result);
}
} else {
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, pdo_pgsql_sqlstate(pgsql_result));
PQclear(pgsql_result);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Creates a new large object, returning its identifier. Must be called inside a transaction. */
PHP_METHOD(PDO_PGSql_Ext, pgsqlLOBCreate)
{
pdo_dbh_t *dbh;
pdo_pgsql_db_handle *H;
Oid lfd;
ZEND_PARSE_PARAMETERS_NONE();
dbh = Z_PDO_DBH_P(ZEND_THIS);
PDO_CONSTRUCT_CHECK;
PDO_DBH_CLEAR_ERR();
H = (pdo_pgsql_db_handle *)dbh->driver_data;
lfd = lo_creat(H->server, INV_READ|INV_WRITE);
if (lfd != InvalidOid) {
zend_string *buf = strpprintf(0, ZEND_ULONG_FMT, (zend_long) lfd);
RETURN_STR(buf);
}
pdo_pgsql_error(dbh, PGRES_FATAL_ERROR, NULL);
PDO_HANDLE_DBH_ERR();
RETURN_FALSE;
}
/* }}} */
/* {{{ Opens an existing large object stream. Must be called inside a transaction. */
PHP_METHOD(PDO_PGSql_Ext, pgsqlLOBOpen)
{
pdo_dbh_t *dbh;
pdo_pgsql_db_handle *H;