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pgsql.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: Zeev Suraski <[email protected]> |
| Jouni Ahto <[email protected]> |
| Yasuo Ohgaki <[email protected]> |
| Youichi Iwakiri <[email protected]> (pg_copy_*) |
| Chris Kings-Lynne <[email protected]> (v3 protocol) |
+----------------------------------------------------------------------+
*/
#include <stdlib.h>
#define PHP_PGSQL_PRIVATE 1
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "zend_smart_str.h"
#include "ext/pcre/php_pcre.h"
#ifdef PHP_WIN32
# include "win32/time.h"
#endif
#include "php_pgsql.h"
#include "php_globals.h"
#include "zend_exceptions.h"
#include "zend_attributes.h"
#include "php_network.h"
#ifdef HAVE_PGSQL
#ifndef InvalidOid
#define InvalidOid ((Oid) 0)
#endif
#define PGSQL_ASSOC 1<<0
#define PGSQL_NUM 1<<1
#define PGSQL_BOTH (PGSQL_ASSOC|PGSQL_NUM)
#define PGSQL_NOTICE_LAST 1 /* Get the last notice */
#define PGSQL_NOTICE_ALL 2 /* Get all notices */
#define PGSQL_NOTICE_CLEAR 3 /* Remove notices */
#define PGSQL_STATUS_LONG 1
#define PGSQL_STATUS_STRING 2
#define PGSQL_MAX_LENGTH_OF_LONG 30
#define PGSQL_MAX_LENGTH_OF_DOUBLE 60
char pgsql_libpq_version[16];
#include "pgsql_arginfo.h"
#if ZEND_LONG_MAX < UINT_MAX
#define PGSQL_RETURN_OID(oid) do { \
if (oid > ZEND_LONG_MAX) { \
RETURN_STR(zend_ulong_to_str(oid)); \
} \
RETURN_LONG((zend_long)oid); \
} while(0)
#else
#define PGSQL_RETURN_OID(oid) RETURN_LONG((zend_long)oid)
#endif
#define CHECK_DEFAULT_LINK(x) \
if ((x) == NULL) { \
zend_throw_error(NULL, "No PostgreSQL connection opened yet"); \
RETURN_THROWS(); \
}
/* This is a bit hacky as the macro usage is "link = FETCH_DEFAULT_LINK();" */
#define FETCH_DEFAULT_LINK() \
(PGG(default_link) ? pgsql_link_from_obj(PGG(default_link)) : NULL); \
php_error_docref(NULL, E_DEPRECATED, "Automatic fetching of PostgreSQL connection is deprecated")
/* Used only when creating a connection */
#define FETCH_DEFAULT_LINK_NO_WARNING() \
(PGG(default_link) ? pgsql_link_from_obj(PGG(default_link)) : NULL)
#define CHECK_PGSQL_LINK(link_handle) \
if (link_handle->conn == NULL) { \
zend_throw_error(NULL, "PostgreSQL connection has already been closed"); \
RETURN_THROWS(); \
}
#define CHECK_PGSQL_RESULT(result_handle) \
if (result_handle->result == NULL) { \
zend_throw_error(NULL, "PostgreSQL result has already been closed"); \
RETURN_THROWS(); \
}
#define CHECK_PGSQL_LOB(lob) \
if (lob->conn == NULL) { \
zend_throw_error(NULL, "PostgreSQL large object has already been closed"); \
RETURN_THROWS(); \
}
#ifndef HAVE_PQERRORS_SQLSTATE
#define PQERRORS_SQLSTATE 0
#endif
ZEND_DECLARE_MODULE_GLOBALS(pgsql)
static PHP_GINIT_FUNCTION(pgsql);
static const zend_module_dep pgsql_module_deps[] = {
ZEND_MOD_REQUIRED("pcre")
ZEND_MOD_END
};
/* {{{ pgsql_module_entry */
zend_module_entry pgsql_module_entry = {
STANDARD_MODULE_HEADER_EX, NULL,
pgsql_module_deps,
"pgsql",
ext_functions,
PHP_MINIT(pgsql),
PHP_MSHUTDOWN(pgsql),
PHP_RINIT(pgsql),
PHP_RSHUTDOWN(pgsql),
PHP_MINFO(pgsql),
PHP_PGSQL_VERSION,
PHP_MODULE_GLOBALS(pgsql),
PHP_GINIT(pgsql),
NULL,
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
/* }}} */
#ifdef COMPILE_DL_PGSQL
#ifdef ZTS
ZEND_TSRMLS_CACHE_DEFINE()
#endif
ZEND_GET_MODULE(pgsql)
#endif
static int le_plink;
static zend_class_entry *pgsql_link_ce, *pgsql_result_ce, *pgsql_lob_ce;
static zend_object_handlers pgsql_link_object_handlers, pgsql_result_object_handlers, pgsql_lob_object_handlers;
static inline pgsql_link_handle *pgsql_link_from_obj(zend_object *obj) {
return (pgsql_link_handle *)((char *)(obj) - XtOffsetOf(pgsql_link_handle, std));
}
#define Z_PGSQL_LINK_P(zv) pgsql_link_from_obj(Z_OBJ_P(zv))
static zend_object *pgsql_link_create_object(zend_class_entry *class_type) {
pgsql_link_handle *intern = zend_object_alloc(sizeof(pgsql_link_handle), class_type);
zend_object_std_init(&intern->std, class_type);
object_properties_init(&intern->std, class_type);
return &intern->std;
}
static zend_function *pgsql_link_get_constructor(zend_object *object) {
zend_throw_error(NULL, "Cannot directly construct PgSql\\Connection, use pg_connect() or pg_pconnect() instead");
return NULL;
}
static void pgsql_link_free(pgsql_link_handle *link)
{
PGresult *res;
while ((res = PQgetResult(link->conn))) {
PQclear(res);
}
if (!link->persistent) {
PQuntrace(link->conn);
PQfinish(link->conn);
}
PGG(num_links)--;
zend_hash_del(&PGG(connections), link->hash);
link->conn = NULL;
zend_string_release(link->hash);
if (link->notices) {
zend_hash_destroy(link->notices);
FREE_HASHTABLE(link->notices);
link->notices = NULL;
}
}
static void pgsql_link_free_obj(zend_object *obj)
{
pgsql_link_handle *link = pgsql_link_from_obj(obj);
if (link->conn) {
pgsql_link_free(link);
}
zend_object_std_dtor(&link->std);
}
static inline pgsql_result_handle *pgsql_result_from_obj(zend_object *obj) {
return (pgsql_result_handle *)((char *)(obj) - XtOffsetOf(pgsql_result_handle, std));
}
#define Z_PGSQL_RESULT_P(zv) pgsql_result_from_obj(Z_OBJ_P(zv))
static zend_object *pgsql_result_create_object(zend_class_entry *class_type) {
pgsql_result_handle *intern = zend_object_alloc(sizeof(pgsql_result_handle), class_type);
zend_object_std_init(&intern->std, class_type);
object_properties_init(&intern->std, class_type);
return &intern->std;
}
static zend_function *pgsql_result_get_constructor(zend_object *object) {
zend_throw_error(NULL, "Cannot directly construct PgSql\\Result, use a dedicated function instead");
return NULL;
}
static void pgsql_result_free(pgsql_result_handle *pg_result)
{
PQclear(pg_result->result);
pg_result->result = NULL;
}
static void pgsql_result_free_obj(zend_object *obj)
{
pgsql_result_handle *pg_result = pgsql_result_from_obj(obj);
if (pg_result->result) {
pgsql_result_free(pg_result);
}
zend_object_std_dtor(&pg_result->std);
}
static inline pgLofp *pgsql_lob_from_obj(zend_object *obj) {
return (pgLofp *)((char *)(obj) - XtOffsetOf(pgLofp, std));
}
#define Z_PGSQL_LOB_P(zv) pgsql_lob_from_obj(Z_OBJ_P(zv))
static zend_object *pgsql_lob_create_object(zend_class_entry *class_type) {
pgLofp *intern = zend_object_alloc(sizeof(pgLofp), class_type);
zend_object_std_init(&intern->std, class_type);
object_properties_init(&intern->std, class_type);
return &intern->std;
}
static zend_function *pgsql_lob_get_constructor(zend_object *object) {
zend_throw_error(NULL, "Cannot directly construct PgSql\\Lob, use pg_lo_open() instead");
return NULL;
}
static void pgsql_lob_free_obj(zend_object *obj)
{
pgLofp *lofp = pgsql_lob_from_obj(obj);
zend_object_std_dtor(&lofp->std);
}
/* Compatibility definitions */
static zend_string *_php_pgsql_trim_message(const char *message)
{
size_t i = strlen(message);
if (i>2 && (message[i-2] == '\r' || message[i-2] == '\n') && message[i-1] == '.') {
--i;
}
while (i>1 && (message[i-1] == '\r' || message[i-1] == '\n')) {
--i;
}
return zend_string_init(message, i, 0);
}
#define PHP_PQ_ERROR(text, pgsql) { \
zend_string *msgbuf = _php_pgsql_trim_message(PQerrorMessage(pgsql)); \
php_error_docref(NULL, E_WARNING, text, ZSTR_VAL(msgbuf)); \
zend_string_release(msgbuf); \
} \
static void php_pgsql_set_default_link(zend_object *obj)
{
GC_ADDREF(obj);
if (PGG(default_link) != NULL) {
zend_object_release(PGG(default_link));
}
PGG(default_link) = obj;
}
static void _close_pgsql_plink(zend_resource *rsrc)
{
PGconn *link = (PGconn *)rsrc->ptr;
PGresult *res;
while ((res = PQgetResult(link))) {
PQclear(res);
}
PQfinish(link);
PGG(num_persistent)--;
PGG(num_links)--;
rsrc->ptr = NULL;
}
static void _php_pgsql_notice_handler(void *l, const char *message)
{
if (PGG(ignore_notices)) {
return;
}
zval tmp;
pgsql_link_handle *link = (pgsql_link_handle *) l;
if (!link->notices) {
link->notices = zend_new_array(1);
}
zend_string *trimmed_message = _php_pgsql_trim_message(message);
if (PGG(log_notices)) {
php_error_docref(NULL, E_NOTICE, "%s", ZSTR_VAL(trimmed_message));
}
ZVAL_STR(&tmp, trimmed_message);
zend_hash_next_index_insert(link->notices, &tmp);
}
static int _rollback_transactions(zval *el)
{
PGconn *link;
PGresult *res;
zend_resource *rsrc = Z_RES_P(el);
if (rsrc->type != le_plink) {
return ZEND_HASH_APPLY_KEEP;
}
link = (PGconn *) rsrc->ptr;
if (PQsetnonblocking(link, 0)) {
php_error_docref("ref.pgsql", E_NOTICE, "Cannot set connection to blocking mode");
return -1;
}
while ((res = PQgetResult(link))) {
PQclear(res);
}
if (PQtransactionStatus(link) != PQTRANS_IDLE) {
int orig = PGG(ignore_notices);
PGG(ignore_notices) = 1;
res = PQexec(link,"ROLLBACK;");
PQclear(res);
PGG(ignore_notices) = orig;
}
return ZEND_HASH_APPLY_KEEP;
}
static void release_string(zval *zv)
{
zend_string_release((zend_string *) Z_PTR_P(zv));
}
static bool _php_pgsql_identifier_is_escaped(const char *identifier, size_t len) /* {{{ */
{
/* Handle edge case. Cannot be a escaped string */
if (len <= 2) {
return false;
}
/* Detect double quotes */
if (identifier[0] == '"' && identifier[len-1] == '"') {
size_t i;
/* Detect wrong format of " inside of escaped string */
for (i = 1; i < len-1; i++) {
if (identifier[i] == '"' && (identifier[++i] != '"' || i == len-1)) {
return false;
}
}
} else {
return false;
}
/* Escaped properly */
return true;
}
#ifndef HAVE_PG_CHANGE_PASSWORD
static PGresult *PQchangePassword(PGconn *conn, const char *user, const char *passwd)
{
/**
* It is more appropriate to let the configured password encryption algorithm
* being picked up, so we pass NULL
*/
char *enc = PQencryptPasswordConn(conn, passwd, user, NULL);
if (!enc) {
return NULL;
}
char *fmtenc = PQescapeLiteral(conn, enc, strlen(enc));
PQfreemem(enc);
if (!fmtenc) {
return NULL;
}
char *fmtuser = PQescapeIdentifier(conn, user, strlen(user));
if (!fmtuser) {
PQfreemem(fmtenc);
return NULL;
}
char *query;
spprintf(&query, 0, "ALTER USER %s PASSWORD %s", fmtuser, fmtenc);
PGresult *pg_result = PQexec(conn, query);
efree(query);
PQfreemem(fmtuser);
PQfreemem(fmtenc);
return pg_result;
}
#endif
#if !defined(HAVE_PG_SOCKET_POLL)
static int PQsocketPoll(int socket, int read, int write, time_t timeout)
{
if (!read && !write)
return 0;
php_pollfd fd;
int ts = -1;
fd.fd = socket;
fd.events = POLLERR;
fd.revents = 0;
if (read) {
fd.events |= POLLIN;
}
if (write) {
fd.events |= POLLOUT;
}
if (timeout != (time_t)ts) {
time_t cur = time(NULL);
if (timeout > cur) {
ts = (timeout - cur) * 1000;
} else {
ts = 0;
}
}
return php_poll2(&fd, 1, ts);
}
#endif
/* {{{ PHP_INI */
PHP_INI_BEGIN()
STD_PHP_INI_BOOLEAN( "pgsql.allow_persistent", "1", PHP_INI_SYSTEM, OnUpdateBool, allow_persistent, zend_pgsql_globals, pgsql_globals)
STD_PHP_INI_ENTRY_EX("pgsql.max_persistent", "-1", PHP_INI_SYSTEM, OnUpdateLong, max_persistent, zend_pgsql_globals, pgsql_globals, display_link_numbers)
STD_PHP_INI_ENTRY_EX("pgsql.max_links", "-1", PHP_INI_SYSTEM, OnUpdateLong, max_links, zend_pgsql_globals, pgsql_globals, display_link_numbers)
STD_PHP_INI_BOOLEAN( "pgsql.auto_reset_persistent", "0", PHP_INI_SYSTEM, OnUpdateLong, auto_reset_persistent, zend_pgsql_globals, pgsql_globals)
STD_PHP_INI_BOOLEAN( "pgsql.ignore_notice", "0", PHP_INI_ALL, OnUpdateBool, ignore_notices, zend_pgsql_globals, pgsql_globals)
STD_PHP_INI_BOOLEAN( "pgsql.log_notice", "0", PHP_INI_ALL, OnUpdateBool, log_notices, zend_pgsql_globals, pgsql_globals)
PHP_INI_END()
static PHP_GINIT_FUNCTION(pgsql)
{
#if defined(COMPILE_DL_PGSQL) && defined(ZTS)
ZEND_TSRMLS_CACHE_UPDATE();
#endif
size_t i = 0;
memset(pgsql_globals, 0, sizeof(zend_pgsql_globals));
zend_hash_init(&pgsql_globals->connections, 0, NULL, NULL, 1);
#define ADD_REGEX(reg) \
do { \
ZEND_ASSERT(i < PGSQL_MAX_REGEXES); \
pgsql_globals->regexes[i ++] = zend_string_init(reg, strlen(reg), true);\
} while(0)
ADD_REGEX("#^([+-]{0,1}[0-9]+)$#n");
ADD_REGEX("#^[-+]?[0-9]*\\.?[0-9]+([eE][-+]?[0-9]+)?$#n");
ADD_REGEX("#^[+-]{0,1}(inf)(inity){0,1}$#ni");
ADD_REGEX("#^[0-9]+$#n");
ADD_REGEX("#^((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])(\\/[0-9]{1,3})?$#n");
ADD_REGEX("#^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))(\\/[0-9]{1,3})?$#n");
ADD_REGEX("#^([0-9]{4}[/-][0-9]{1,2}[/-][0-9]{1,2})(([ \\t]+|T)(([0-9]{1,2}:[0-9]{1,2}){1}(:[0-9]{1,2}){0,1}(\\.[0-9]+){0,1}([ \\t]*([+-][0-9]{1,4}(:[0-9]{1,2}){0,1}|[-a-zA-Z_/+]{1,50})){0,1})){0,1}$#ni");
ADD_REGEX("#^([0-9]{4}[/-][0-9]{1,2}[/-][0-9]{1,2})$#ni");
ADD_REGEX("#^(([0-9]{1,2}:[0-9]{1,2}){1}(:[0-9]{1,2}){0,1}){0,1}$#ni");
ADD_REGEX("#^(@?[ \\t]+)?("
/* Textual time units and their abbreviations: */
"(([-+]?[ \\t]+)?"
"[0-9]+(\\.[0-9]*)?[ \\t]*"
"(millenniums|millennia|millennium|mil|mils|"
"centuries|century|cent|c|"
"decades|decade|dec|decs|"
"years|year|y|"
"months|month|mon|"
"weeks|week|w|"
"days|day|d|"
"hours|hour|hr|hrs|h|"
"minutes|minute|mins|min|m|"
"seconds|second|secs|sec|s))+|"
/* Textual time units plus (dd)* hh[:mm[:ss]] */
"((([-+]?[ \\t]+)?"
"[0-9]+(\\.[0-9]*)?[ \\t]*"
"(millenniums|millennia|millennium|mil|mils|"
"centuries|century|cent|c|"
"decades|decade|dec|decs|"
"years|year|y|"
"months|month|mon|"
"weeks|week|w|"
"days|day|d))+"
"([-+]?[ \\t]+"
"([0-9]+[ \\t]+)+" /* dd */
"(([0-9]{1,2}:){0,2}[0-9]{0,2})" /* hh:[mm:[ss]] */
")?))"
"([ \\t]+ago)?$#ni");
ADD_REGEX("#^([0-9a-f]{2,2}:){5,5}[0-9a-f]{2,2}$#ni");
}
static void php_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);
}
}
PHP_MINIT_FUNCTION(pgsql)
{
REGISTER_INI_ENTRIES();
le_plink = zend_register_list_destructors_ex(NULL, _close_pgsql_plink, "pgsql link persistent", module_number);
pgsql_link_ce = register_class_PgSql_Connection();
pgsql_link_ce->create_object = pgsql_link_create_object;
pgsql_link_ce->default_object_handlers = &pgsql_link_object_handlers;
memcpy(&pgsql_link_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
pgsql_link_object_handlers.offset = XtOffsetOf(pgsql_link_handle, std);
pgsql_link_object_handlers.free_obj = pgsql_link_free_obj;
pgsql_link_object_handlers.get_constructor = pgsql_link_get_constructor;
pgsql_link_object_handlers.clone_obj = NULL;
pgsql_link_object_handlers.compare = zend_objects_not_comparable;
pgsql_result_ce = register_class_PgSql_Result();
pgsql_result_ce->create_object = pgsql_result_create_object;
pgsql_result_ce->default_object_handlers = &pgsql_result_object_handlers;
memcpy(&pgsql_result_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
pgsql_result_object_handlers.offset = XtOffsetOf(pgsql_result_handle, std);
pgsql_result_object_handlers.free_obj = pgsql_result_free_obj;
pgsql_result_object_handlers.get_constructor = pgsql_result_get_constructor;
pgsql_result_object_handlers.clone_obj = NULL;
pgsql_result_object_handlers.compare = zend_objects_not_comparable;
pgsql_lob_ce = register_class_PgSql_Lob();
pgsql_lob_ce->create_object = pgsql_lob_create_object;
pgsql_lob_ce->default_object_handlers = &pgsql_lob_object_handlers;
memcpy(&pgsql_lob_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
pgsql_lob_object_handlers.offset = XtOffsetOf(pgLofp, std);
pgsql_lob_object_handlers.free_obj = pgsql_lob_free_obj;
pgsql_lob_object_handlers.get_constructor = pgsql_lob_get_constructor;
pgsql_lob_object_handlers.clone_obj = NULL;
pgsql_lob_object_handlers.compare = zend_objects_not_comparable;
/* libpq version */
php_libpq_version(pgsql_libpq_version, sizeof(pgsql_libpq_version));
register_pgsql_symbols(module_number);
return SUCCESS;
}
PHP_MSHUTDOWN_FUNCTION(pgsql)
{
UNREGISTER_INI_ENTRIES();
zend_hash_destroy(&PGG(connections));
for (size_t i = 0; i < PGSQL_MAX_REGEXES; i ++)
zend_string_release_ex(PGG(regexes[i]), true);
return SUCCESS;
}
PHP_RINIT_FUNCTION(pgsql)
{
PGG(default_link) = NULL;
PGG(num_links) = PGG(num_persistent);
zend_hash_init(&PGG(field_oids), 0, NULL, release_string, 0);
zend_hash_init(&PGG(table_oids), 0, NULL, release_string, 0);
return SUCCESS;
}
PHP_RSHUTDOWN_FUNCTION(pgsql)
{
if (PGG(default_link)) {
zend_object_release(PGG(default_link));
PGG(default_link) = NULL;
}
zend_hash_destroy(&PGG(field_oids));
zend_hash_destroy(&PGG(table_oids));
/* clean up persistent connection */
zend_hash_apply(&EG(persistent_list), (apply_func_t) _rollback_transactions);
return SUCCESS;
}
PHP_MINFO_FUNCTION(pgsql)
{
char buf[256];
php_info_print_table_start();
php_info_print_table_row(2, "PostgreSQL Support", "enabled");
php_info_print_table_row(2, "PostgreSQL (libpq) Version", pgsql_libpq_version);
php_info_print_table_row(2, "Multibyte character support", "enabled");
snprintf(buf, sizeof(buf), ZEND_LONG_FMT, PGG(num_persistent));
php_info_print_table_row(2, "Active Persistent Links", buf);
snprintf(buf, sizeof(buf), ZEND_LONG_FMT, PGG(num_links));
php_info_print_table_row(2, "Active Links", buf);
php_info_print_table_end();
DISPLAY_INI_ENTRIES();
}
static void php_pgsql_do_connect(INTERNAL_FUNCTION_PARAMETERS, int persistent)
{
char *connstring;
size_t connstring_len;
pgsql_link_handle *link;
PGconn *pgsql;
smart_str str = {0};
zend_long connect_type = 0;
PGresult *pg_result;
ZEND_PARSE_PARAMETERS_START(1, 2)
Z_PARAM_STRING(connstring, connstring_len)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(connect_type)
ZEND_PARSE_PARAMETERS_END();
smart_str_appends(&str, "pgsql");
smart_str_appendl(&str, connstring, connstring_len);
smart_str_appendc(&str, '_');
/* make sure that the PGSQL_CONNECT_FORCE_NEW bit is not part of the hash so that subsequent
* connections can re-use this connection. See bug #39979. */
smart_str_append_long(&str, connect_type & ~PGSQL_CONNECT_FORCE_NEW);
smart_str_0(&str);
if (persistent && PGG(allow_persistent)) {
zend_resource *le;
/* try to find if we already have this link in our persistent list */
if ((le = zend_hash_find_ptr(&EG(persistent_list), str.s)) == NULL) { /* we don't */
if (PGG(max_links) != -1 && PGG(num_links) >= PGG(max_links)) {
php_error_docref(NULL, E_WARNING,
"Cannot create new link. Too many open links (" ZEND_LONG_FMT ")", PGG(num_links));
goto err;
}
if (PGG(max_persistent) != -1 && PGG(num_persistent) >= PGG(max_persistent)) {
php_error_docref(NULL, E_WARNING,
"Cannot create new link. Too many open persistent links (" ZEND_LONG_FMT ")", PGG(num_persistent));
goto err;
}
/* create the link */
pgsql = PQconnectdb(connstring);
if (pgsql == NULL || PQstatus(pgsql) == CONNECTION_BAD) {
PHP_PQ_ERROR("Unable to connect to PostgreSQL server: %s", pgsql)
if (pgsql) {
PQfinish(pgsql);
}
goto err;
}
/* hash it up */
if (zend_register_persistent_resource(ZSTR_VAL(str.s), ZSTR_LEN(str.s), pgsql, le_plink) == NULL) {
goto err;
}
PGG(num_links)++;
PGG(num_persistent)++;
} else { /* we do */
if (le->type != le_plink) {
goto err;
}
if (connect_type & PGSQL_CONNECT_FORCE_NEW) {
PGresult *pg_result;
while ((pg_result = PQgetResult(le->ptr))) {
PQclear(pg_result);
}
PQreset(le->ptr);
}
/* ensure that the link did not die */
if (PGG(auto_reset_persistent) & 1) {
/* need to send & get something from backend to
make sure we catch CONNECTION_BAD every time */
PGresult *pg_result;
pg_result = PQexec(le->ptr, "select 1");
PQclear(pg_result);
}
if (PQstatus(le->ptr) == CONNECTION_BAD) { /* the link died */
if (le->ptr == NULL) {
le->ptr = PQconnectdb(connstring);
}
else {
PQreset(le->ptr);
}
if (le->ptr == NULL || PQstatus(le->ptr) == CONNECTION_BAD) {
php_error_docref(NULL, E_WARNING,"PostgreSQL connection lost, unable to reconnect");
zend_hash_del(&EG(persistent_list), str.s);
goto err;
}
}
pgsql = (PGconn *) le->ptr;
/* consider to use php_version_compare() here */
if (zend_strtod(PQparameterStatus(pgsql, "server_version"), NULL) >= 7.2) {
pg_result = PQexec(pgsql, "RESET ALL;");
PQclear(pg_result);
}
}
object_init_ex(return_value, pgsql_link_ce);
link = Z_PGSQL_LINK_P(return_value);
link->conn = pgsql;
link->hash = zend_string_copy(str.s);
link->notices = NULL;
link->persistent = 1;
} else { /* Non persistent connection */
zval *index_ptr;
/* first we check the hash for the hashed_details key. If it exists,
* it should point us to the right offset where the actual pgsql link sits.
* if it doesn't, open a new pgsql link, add it to the resource list,
* and add a pointer to it with hashed_details as the key.
*/
if (!(connect_type & PGSQL_CONNECT_FORCE_NEW)
&& (index_ptr = zend_hash_find(&PGG(connections), str.s)) != NULL) {
php_pgsql_set_default_link(Z_OBJ_P(index_ptr));
ZVAL_COPY(return_value, index_ptr);
goto cleanup;
}
if (PGG(max_links) != -1 && PGG(num_links) >= PGG(max_links)) {
php_error_docref(NULL, E_WARNING, "Cannot create new link. Too many open links (" ZEND_LONG_FMT ")", PGG(num_links));
goto err;
}
/* Non-blocking connect */
if (connect_type & PGSQL_CONNECT_ASYNC) {
pgsql = PQconnectStart(connstring);
if (pgsql==NULL || PQstatus(pgsql)==CONNECTION_BAD) {
PHP_PQ_ERROR("Unable to connect to PostgreSQL server: %s", pgsql);
if (pgsql) {
PQfinish(pgsql);
}
goto err;
}
} else {
pgsql = PQconnectdb(connstring);
if (pgsql==NULL || PQstatus(pgsql)==CONNECTION_BAD) {
PHP_PQ_ERROR("Unable to connect to PostgreSQL server: %s", pgsql);
if (pgsql) {
PQfinish(pgsql);
}
goto err;
}
}
object_init_ex(return_value, pgsql_link_ce);
link = Z_PGSQL_LINK_P(return_value);
link->conn = pgsql;
link->hash = zend_string_copy(str.s);
link->notices = NULL;
link->persistent = 0;
/* add it to the hash */
zend_hash_update(&PGG(connections), str.s, return_value);
/* Keep track of link => hash mapping, so we can remove the hash entry from connections
* when the connection is closed. This uses the address of the connection rather than the
* zend_resource, because the resource destructor is passed a stack copy of the resource
* structure. */
PGG(num_links)++;
}
/* set notice processor */
if (! PGG(ignore_notices) && Z_TYPE_P(return_value) == IS_OBJECT) {
PQsetNoticeProcessor(pgsql, _php_pgsql_notice_handler, link);
}
php_pgsql_set_default_link(Z_OBJ_P(return_value));
cleanup:
smart_str_free(&str);
return;
err:
smart_str_free(&str);
RETURN_FALSE;
}
/* }}} */
/* {{{ Open a PostgreSQL connection */
PHP_FUNCTION(pg_connect)
{
php_pgsql_do_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU,0);
}
/* }}} */
/* {{{ Poll the status of an in-progress async PostgreSQL connection attempt*/
PHP_FUNCTION(pg_connect_poll)
{
zval *pgsql_link;
pgsql_link_handle *pgsql_handle;
PGconn *pgsql;
int ret;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_OBJECT_OF_CLASS(pgsql_link, pgsql_link_ce)
ZEND_PARSE_PARAMETERS_END();
pgsql_handle = Z_PGSQL_LINK_P(pgsql_link);
CHECK_PGSQL_LINK(pgsql_handle);
pgsql = pgsql_handle->conn;
ret = PQconnectPoll(pgsql);
RETURN_LONG(ret);
}
/* }}} */
/* {{{ Open a persistent PostgreSQL connection */
PHP_FUNCTION(pg_pconnect)
{
php_pgsql_do_connect(INTERNAL_FUNCTION_PARAM_PASSTHRU,1);
}
/* }}} */
/* {{{ Close a PostgreSQL connection */
PHP_FUNCTION(pg_close)
{
zval *pgsql_link = NULL;
pgsql_link_handle *link;
ZEND_PARSE_PARAMETERS_START(0, 1)
Z_PARAM_OPTIONAL
Z_PARAM_OBJECT_OF_CLASS_OR_NULL(pgsql_link, pgsql_link_ce)
ZEND_PARSE_PARAMETERS_END();
if (!pgsql_link) {
link = FETCH_DEFAULT_LINK();
CHECK_DEFAULT_LINK(link);
zend_object_release(PGG(default_link));
PGG(default_link) = NULL;
RETURN_TRUE;
}
link = Z_PGSQL_LINK_P(pgsql_link);
CHECK_PGSQL_LINK(link);
if (link == FETCH_DEFAULT_LINK_NO_WARNING()) {
GC_DELREF(PGG(default_link));
PGG(default_link) = NULL;
}
pgsql_link_free(link);
RETURN_TRUE;
}
/* }}} */
#define PHP_PG_DBNAME 1
#define PHP_PG_ERROR_MESSAGE 2
#define PHP_PG_OPTIONS 3
#define PHP_PG_PORT 4
#define PHP_PG_TTY 5
#define PHP_PG_HOST 6
#define PHP_PG_VERSION 7
#define PHP_PG_JIT 8
/* php_pgsql_get_link_info */
static void php_pgsql_get_link_info(INTERNAL_FUNCTION_PARAMETERS, int entry_type)
{
pgsql_link_handle *link;
zval *pgsql_link = NULL;
PGconn *pgsql;
char *result;
ZEND_PARSE_PARAMETERS_START(0, 1)
Z_PARAM_OPTIONAL
Z_PARAM_OBJECT_OF_CLASS_OR_NULL(pgsql_link, pgsql_link_ce)
ZEND_PARSE_PARAMETERS_END();
if (!pgsql_link) {
link = FETCH_DEFAULT_LINK();
CHECK_DEFAULT_LINK(link);
} else {
link = Z_PGSQL_LINK_P(pgsql_link);
CHECK_PGSQL_LINK(link);
}
pgsql = link->conn;
switch(entry_type) {
case PHP_PG_DBNAME:
result = PQdb(pgsql);
break;
case PHP_PG_ERROR_MESSAGE:
RETURN_STR(_php_pgsql_trim_message(PQerrorMessage(pgsql)));
case PHP_PG_OPTIONS:
result = PQoptions(pgsql);
break;
case PHP_PG_PORT:
result = PQport(pgsql);
break;
case PHP_PG_TTY:
result = PQtty(pgsql);
break;
case PHP_PG_HOST:
result = PQhost(pgsql);
break;
case PHP_PG_VERSION: {
array_init(return_value);
char *tmp;
add_assoc_string(return_value, "client", pgsql_libpq_version);
add_assoc_long(return_value, "protocol", PQprotocolVersion(pgsql));
add_assoc_string(return_value, "server", (char*)PQparameterStatus(pgsql, "server_version"));
#define PHP_PQ_COPY_PARAM(_x) tmp = (char*)PQparameterStatus(pgsql, _x); \
if(tmp) add_assoc_string(return_value, _x, tmp); \
else add_assoc_null(return_value, _x);
PHP_PQ_COPY_PARAM("server_encoding");
PHP_PQ_COPY_PARAM("client_encoding");
PHP_PQ_COPY_PARAM("is_superuser");
PHP_PQ_COPY_PARAM("session_authorization");
PHP_PQ_COPY_PARAM("DateStyle");
PHP_PQ_COPY_PARAM("IntervalStyle");
PHP_PQ_COPY_PARAM("TimeZone");
PHP_PQ_COPY_PARAM("integer_datetimes");
PHP_PQ_COPY_PARAM("standard_conforming_strings");
PHP_PQ_COPY_PARAM("application_name");
return;
}
case PHP_PG_JIT: {
PGresult *res;
array_init(return_value);
res = PQexec(pgsql, "SHOW jit_provider");
if (PQresultStatus(res) != PGRES_TUPLES_OK) {
add_assoc_null(return_value, "jit_provider");
} else {
add_assoc_string(return_value, "jit_provider", PQgetvalue(res, 0, 0));
}
PQclear(res);
res = PQexec(pgsql, "SHOW jit");
if (PQresultStatus(res) != PGRES_TUPLES_OK) {
add_assoc_null(return_value, "jit");
} else {
add_assoc_string(return_value, "jit", PQgetvalue(res, 0, 0));
}
PQclear(res);
return;
}
EMPTY_SWITCH_DEFAULT_CASE()
}
if (result) {
RETURN_STRING(result);
} else {
RETURN_EMPTY_STRING();
}
}