/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2009 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:           |
   | http://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          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Stig Sæther Bakken <ssb@php.net>                            |
   |          Thies C. Arntzen <thies@thieso.net>                         |
   |                                                                      |
   | Collection support by Andy Sautins <asautins@veripost.net>           |
   | Temporary LOB support by David Benson <dbenson@mancala.com>          |
   | ZTS per process OCIPLogon by Harald Radi <harald.radi@nme.at>        |
   |                                                                      |
   | Redesigned by: Antony Dovgal <antony@zend.com>                       |
   |                Andi Gutmans <andi@zend.com>                          |
   |                Wez Furlong <wez@omniti.com>                          |
   +----------------------------------------------------------------------+
*/

/* $Id: php_oci8_int.h,v 1.11.2.6.2.25 2008/12/31 11:17:40 sebastian Exp $ */

#if HAVE_OCI8
# ifndef PHP_OCI8_INT_H
#  define PHP_OCI8_INT_H

/* misc defines {{{ */
# if (defined(__osf__) && defined(__alpha))
#  ifndef A_OSF
#   define A_OSF
#  endif
#  ifndef OSF1
#   define OSF1
#  endif
#  ifndef _INTRINSICS
#   define _INTRINSICS
#  endif
# endif /* osf alpha */

#if defined(min)
#undef min
#endif
#if defined(max)
#undef max
#endif
/* }}} */

#include "ext/standard/php_string.h"
#include <oci.h>

extern int le_connection;
extern int le_pconnection;
extern int le_statement;
extern int le_descriptor;
#ifdef PHP_OCI8_HAVE_COLLECTIONS 
extern int le_collection;
#endif
extern int le_server;
extern int le_session;

extern zend_class_entry *oci_lob_class_entry_ptr;
#ifdef PHP_OCI8_HAVE_COLLECTIONS
extern zend_class_entry *oci_coll_class_entry_ptr;
#endif

/* constants {{{ */
#define PHP_OCI_SEEK_SET 0
#define PHP_OCI_SEEK_CUR 1
#define PHP_OCI_SEEK_END 2

#define PHP_OCI_MAX_NAME_LEN  64
#define PHP_OCI_MAX_DATA_SIZE INT_MAX
#define PHP_OCI_PIECE_SIZE    (64*1024)-1
#define PHP_OCI_LOB_BUFFER_SIZE 1048576l  /* 1Mb seems to be the most reasonable buffer size for LOB reading */

#define PHP_OCI_ASSOC               1<<0
#define PHP_OCI_NUM                 1<<1
#define PHP_OCI_BOTH                (PHP_OCI_ASSOC|PHP_OCI_NUM)

#define PHP_OCI_RETURN_NULLS        1<<2
#define PHP_OCI_RETURN_LOBS         1<<3

#define PHP_OCI_FETCHSTATEMENT_BY_COLUMN    1<<4
#define PHP_OCI_FETCHSTATEMENT_BY_ROW       1<<5
#define PHP_OCI_FETCHSTATEMENT_BY           (PHP_OCI_FETCHSTATEMENT_BY_COLUMN | PHP_OCI_FETCHSTATEMENT_BY_ROW)

#define PHP_OCI_LOB_BUFFER_DISABLED 0
#define PHP_OCI_LOB_BUFFER_ENABLED 1
#define PHP_OCI_LOB_BUFFER_USED 2

/* }}} */

typedef struct { /* php_oci_connection {{{ */
	OCIEnv *env;		/* private env handle */
	ub2 charset;		/* charset ID */
	OCIServer *server;	/* private server handle */
	OCISvcCtx *svc;		/* private service context handle */
	OCISession *session; /* private session handle */
	OCIError *err;		/* private error handle */
	sword errcode;		/* last errcode */

	HashTable *descriptors;		/* descriptors hash, used to flush all the LOBs using this connection on commit */
	unsigned is_open:1;			/* hels to determine if the connection is dead or not */
	unsigned is_attached:1;		/* hels to determine if we should detach from the server when closing/freeing the connection */
	unsigned is_persistent:1;	/* self-descriptive */
	unsigned used_this_request:1; /* helps to determine if we should reset connection's next ping time and check its timeout */
	unsigned needs_commit:1;	/* helps to determine if we should rollback this connection on close/shutdown */
	unsigned passwd_changed:1;	/* helps determine if a persistent connection hash should be invalidated after a password change */
	int rsrc_id;				/* resource ID */
	time_t idle_expiry;			/* time when the connection will be considered as expired */
	time_t next_ping;			/* time of the next ping */
	char *hash_key;				/* hashed details of the connection */
} php_oci_connection; /* }}} */

typedef struct { /* php_oci_descriptor {{{ */
	int id;
	php_oci_connection *connection;	/* parent connection handle */
	dvoid *descriptor;				/* OCI descriptor handle */
	ub4 type;						/* descriptor type */
	int lob_current_position;		/* LOB internal pointer */ 
	int lob_size;					/* cached LOB size. -1 = Lob wasn't initialized yet */
	int buffering;					/* cached buffering flag. 0 - off, 1 - on, 2 - on and buffer was used */
	ub4 chunk_size;					/* chunk size of the LOB. 0 - unknown */
	ub1 charset_form;				/* charset form, required for NCLOBs */
	ub2 charset_id;					/* charset ID */
	unsigned is_open:1;				/* helps to determine if LOB is open or not */
} php_oci_descriptor; /* }}} */

typedef struct { /* php_oci_lob_ctx {{{ */
	char **lob_data;            /* address of pointer to LOB data */
	ub4 *lob_len;               /* address of LOB length variable (bytes) */
	ub4 alloc_len;
} php_oci_lob_ctx; /* }}} */

typedef struct { /* php_oci_collection {{{ */
	int id;
	php_oci_connection *connection; /* parent connection handle */
	OCIType     *tdo;				/* collection's type handle */
	OCITypeCode coll_typecode;		/* collection's typecode handle */
	OCIRef      *elem_ref;			/* element's reference handle */
	OCIType     *element_type;		/* element's type handle */
	OCITypeCode element_typecode;	/* element's typecode handle */
	OCIColl     *collection;		/* collection handle */
} php_oci_collection; /* }}} */

typedef struct { /* php_oci_define {{{ */
	zval *zval;		/* zval used in define */
	text *name;		/* placeholder's name */
	ub4 name_len;	/* placeholder's name length */
	ub4 type;		/* define type */
} php_oci_define; /* }}} */

typedef struct { /* php_oci_statement {{{ */
	int id;
	int parent_stmtid;				/* parent statement id */
	php_oci_connection *connection; /* parent connection handle */
	sword errcode;					/* last errcode*/
	OCIError *err;					/* private error handle */
	OCIStmt *stmt;					/* statement handle */
	char *last_query;				/* last query issued. also used to determine if this is a statement or a refcursor recieved from Oracle */
	long last_query_len;			/* last query length */
	HashTable *columns;				/* hash containing all the result columns */
	HashTable *binds;				/* binds hash */
	HashTable *defines;				/* defines hash */
	int ncolumns;					/* number of columns in the result */
	unsigned executed:1;			/* statement executed flag */
	unsigned has_data:1;			/* statement has more data flag */
	ub2 stmttype;					/* statement type */
} php_oci_statement; /* }}} */

typedef struct { /* php_oci_bind {{{ */
	OCIBind *bind;			/* bind handle */
	zval *zval;				/* value */
	dvoid *descriptor;		/* used for binding of LOBS etc */
	OCIStmt *statement;     /* used for binding REFCURSORs */
	php_oci_statement *parent_statement;     /* pointer to the parent statement */
	struct {
		void *elements;
		sb2 *indicators;
		ub2 *element_lengths;
/*		ub2 *retcodes;		*/
		ub4 current_length;
		ub4 old_length;
		ub4 max_length;
		long type;
	} array;
	sb2 indicator;			/* -1 means NULL */
	ub2 retcode;			/*  */
	ub4 dummy_len;          /* a dummy var to store alenpp value in bind OUT callback */
} php_oci_bind; /* }}} */

typedef struct { /* php_oci_out_column {{{ */
	php_oci_statement *statement;			/* statement handle. used when fetching REFCURSORS */
	php_oci_statement *nested_statement;	/* statement handle. used when fetching REFCURSORS */
	OCIDefine *oci_define;			/* define handle */
	char *name;						/* column name */
	ub4 name_len;					/* column name length */
	ub2 data_type;					/* column data type */
	ub2 data_size;					/* data size */
	ub4 storage_size4;				/* size used when allocating buffers */
	sb2 indicator;					/* */
	ub2 retcode;					/* code returned when fetching this particular column */
	ub2 retlen;						/* */
	ub4 retlen4;					/* */
	ub2 is_descr;					/* column contains a descriptor */
	ub2 is_cursor;					/* column contains a cursor */
	int stmtid;						/* statement id for cursors */
	int descid;						/* descriptor id for descriptors */
	void *data;						/* */
	php_oci_define *define;			/* define handle */
	int piecewise;					/* column is fetched piece-by-piece */
	ub4 cb_retlen;					/* */
	sb1 scale;						/* column scale */
	sb2 precision;					/* column precision */
	ub1 charset_form;				/* charset form, required for NCLOBs */
	ub2 charset_id;					/* charset ID */
} php_oci_out_column; /* }}} */

/* {{{ macros */

#define PHP_OCI_CALL(func, params) \
	do { \
		if (OCI_G(debug_mode)) { \
			php_printf ("OCI8 DEBUG: " #func " at (%s:%d) \n", __FILE__, __LINE__); \
		} \
		OCI_G(in_call) = 1; \
		func params; \
		OCI_G(in_call) = 0; \
	} while (0)

#define PHP_OCI_CALL_RETURN(__retval, func, params) \
	do { \
		if (OCI_G(debug_mode)) { \
			php_printf ("OCI8 DEBUG: " #func " at (%s:%d) \n", __FILE__, __LINE__); \
		} \
		OCI_G(in_call) = 1; \
		__retval = func params; \
		OCI_G(in_call) = 0; \
	} while (0)

#define PHP_OCI_HANDLE_ERROR(connection, errcode) \
	do { \
		switch (errcode) { \
			case 1013: \
					   zend_bailout(); \
			break; \
			case 22: \
			case 1012: \
			case 3113: \
			case 604: \
			case 1041: \
			case 3114: \
					   connection->is_open = 0; \
			break; \
		} \
	} while (0)

#define PHP_OCI_REGISTER_RESOURCE(resource, le_resource) \
	do { \
		resource->id = ZEND_REGISTER_RESOURCE(NULL, resource, le_resource); \
	} while (0)

#define PHP_OCI_ZVAL_TO_CONNECTION(zval, connection) \
	ZEND_FETCH_RESOURCE2(connection, php_oci_connection *, &zval, -1, "oci8 connection", le_connection, le_pconnection);

#define PHP_OCI_ZVAL_TO_STATEMENT(zval, statement) \
	ZEND_FETCH_RESOURCE(statement, php_oci_statement *, &zval, -1, "oci8 statement", le_statement)

#define PHP_OCI_ZVAL_TO_DESCRIPTOR(zval, descriptor) \
	ZEND_FETCH_RESOURCE(descriptor, php_oci_descriptor *, &zval, -1, "oci8 descriptor", le_descriptor)

#define PHP_OCI_ZVAL_TO_COLLECTION(zval, collection) \
	ZEND_FETCH_RESOURCE(collection, php_oci_collection *, &zval, -1, "oci8 collection", le_collection)

#define PHP_OCI_FETCH_RESOURCE_EX(zval, var, type, name, resource_type)                      \
	do { \
		var = (type) zend_fetch_resource(&zval TSRMLS_CC, -1, name, NULL, 1, resource_type); \
		if (!var) {                                                                          \
			return 1;                                                                        \
		} \
	} while (0)
	
#define PHP_OCI_ZVAL_TO_CONNECTION_EX(zval, connection) \
	PHP_OCI_FETCH_RESOURCE_EX(zval, connection, php_oci_connection *, "oci8 connection", le_connection)

#define PHP_OCI_ZVAL_TO_STATEMENT_EX(zval, statement) \
	PHP_OCI_FETCH_RESOURCE_EX(zval, statement, php_oci_statement *, "oci8 statement", le_statement)

#define PHP_OCI_ZVAL_TO_DESCRIPTOR_EX(zval, descriptor) \
	PHP_OCI_FETCH_RESOURCE_EX(zval, descriptor, php_oci_descriptor *, "oci8 descriptor", le_descriptor)

#define PHP_OCI_ZVAL_TO_COLLECTION_EX(zval, collection) \
	PHP_OCI_FETCH_RESOURCE_EX(zval, collection, php_oci_collection *, "oci8 collection", le_collection)

/* }}} */

/* PROTOS */

/* main prototypes {{{ */

void php_oci_column_hash_dtor (void *data);
void php_oci_define_hash_dtor (void *data);
void php_oci_bind_hash_dtor (void *data);
void php_oci_descriptor_flush_hash_dtor (void *data);
int php_oci_descriptor_delete_from_hash(void *data, void *id TSRMLS_DC);

sb4 php_oci_error (OCIError *, sword TSRMLS_DC);
sb4 php_oci_fetch_errmsg(OCIError *, text ** TSRMLS_DC);
#ifdef HAVE_OCI8_ATTR_STATEMENT
int php_oci_fetch_sqltext_offset(php_oci_statement *, text **, ub2 * TSRMLS_DC);
#endif
	
void php_oci_do_connect (INTERNAL_FUNCTION_PARAMETERS, int , int);
php_oci_connection *php_oci_do_connect_ex(char *username, int username_len, char *password, int password_len, char *new_password, int new_password_len, char *dbname, int dbname_len, char *charset, long session_mode, int persistent, int exclusive TSRMLS_DC);

int php_oci_connection_rollback(php_oci_connection * TSRMLS_DC);
int php_oci_connection_commit(php_oci_connection * TSRMLS_DC);

int php_oci_password_change(php_oci_connection *, char *, int, char *, int, char *, int TSRMLS_DC);
int php_oci_server_get_version(php_oci_connection *, char ** TSRMLS_DC); 

void php_oci_fetch_row(INTERNAL_FUNCTION_PARAMETERS, int, int);
int php_oci_column_to_zval(php_oci_out_column *, zval *, int TSRMLS_DC);

/* }}} */

/* lob related prototypes {{{ */

php_oci_descriptor * php_oci_lob_create (php_oci_connection *, long TSRMLS_DC);
int php_oci_lob_get_length (php_oci_descriptor *, ub4 * TSRMLS_DC);
int php_oci_lob_read (php_oci_descriptor *, long, long, char **, ub4 * TSRMLS_DC);
int php_oci_lob_write (php_oci_descriptor *, ub4, char *, int, ub4 * TSRMLS_DC);
int php_oci_lob_flush (php_oci_descriptor *, long TSRMLS_DC);
int php_oci_lob_set_buffering (php_oci_descriptor *, int TSRMLS_DC);
int php_oci_lob_get_buffering (php_oci_descriptor *);
int php_oci_lob_copy (php_oci_descriptor *, php_oci_descriptor *, long TSRMLS_DC);
#ifdef HAVE_OCI8_TEMP_LOB
int php_oci_lob_close (php_oci_descriptor * TSRMLS_DC);
int php_oci_temp_lob_close (php_oci_descriptor * TSRMLS_DC);
int php_oci_lob_write_tmp (php_oci_descriptor *, ub1, char *, int TSRMLS_DC);
#endif
void php_oci_lob_free(php_oci_descriptor * TSRMLS_DC);
int php_oci_lob_import(php_oci_descriptor *descriptor, char * TSRMLS_DC);
int php_oci_lob_append (php_oci_descriptor *, php_oci_descriptor * TSRMLS_DC);
int php_oci_lob_truncate (php_oci_descriptor *, long TSRMLS_DC);
int php_oci_lob_erase (php_oci_descriptor *, long, ub4, ub4 * TSRMLS_DC);
int php_oci_lob_is_equal (php_oci_descriptor *, php_oci_descriptor *, boolean * TSRMLS_DC);
#if defined(HAVE_OCI_LOB_READ2)
sb4 php_oci_lob_callback (dvoid *ctxp, CONST dvoid *bufxp, oraub8 len, ub1 piece, dvoid **changed_bufpp, oraub8 *changed_lenp);
#else
sb4 php_oci_lob_callback (dvoid *ctxp, CONST dvoid *bufxp, ub4 len, ub1 piece);
#endif

/* }}} */

/* collection related prototypes {{{ */

php_oci_collection * php_oci_collection_create(php_oci_connection *, char *, int, char *, int TSRMLS_DC);
int php_oci_collection_size(php_oci_collection *, sb4 * TSRMLS_DC);
int php_oci_collection_max(php_oci_collection *, long * TSRMLS_DC);
int php_oci_collection_trim(php_oci_collection *, long TSRMLS_DC);
int php_oci_collection_append(php_oci_collection *, char *, int TSRMLS_DC);
int php_oci_collection_element_get(php_oci_collection *, long, zval** TSRMLS_DC);
int php_oci_collection_element_set(php_oci_collection *, long, char*, int TSRMLS_DC);
int php_oci_collection_element_set_null(php_oci_collection *, long TSRMLS_DC);
int php_oci_collection_element_set_date(php_oci_collection *, long, char *, int TSRMLS_DC);
int php_oci_collection_element_set_number(php_oci_collection *, long, char *, int TSRMLS_DC);
int php_oci_collection_element_set_string(php_oci_collection *, long, char *, int TSRMLS_DC);
int php_oci_collection_assign(php_oci_collection *, php_oci_collection * TSRMLS_DC);
void php_oci_collection_close(php_oci_collection * TSRMLS_DC);
int php_oci_collection_append_null(php_oci_collection * TSRMLS_DC);
int php_oci_collection_append_date(php_oci_collection *, char *, int TSRMLS_DC);
int php_oci_collection_append_number(php_oci_collection *, char *, int TSRMLS_DC);
int php_oci_collection_append_string(php_oci_collection *, char *, int TSRMLS_DC);


/* }}} */

/* statement related prototypes {{{ */

php_oci_statement * php_oci_statement_create (php_oci_connection *, char *, int TSRMLS_DC);
int php_oci_statement_set_prefetch (php_oci_statement *, long TSRMLS_DC);
int php_oci_statement_fetch (php_oci_statement *, ub4 TSRMLS_DC);
php_oci_out_column * php_oci_statement_get_column (php_oci_statement *, long, char*, int TSRMLS_DC);
int php_oci_statement_execute (php_oci_statement *, ub4 TSRMLS_DC);
int php_oci_statement_cancel (php_oci_statement * TSRMLS_DC);
void php_oci_statement_free (php_oci_statement * TSRMLS_DC);
int php_oci_bind_pre_exec(void *data TSRMLS_DC);
int php_oci_bind_post_exec(void *data TSRMLS_DC);
int php_oci_bind_by_name(php_oci_statement *, char *, int, zval*, long, long TSRMLS_DC);
sb4 php_oci_bind_in_callback(dvoid *, OCIBind *, ub4, ub4, dvoid **, ub4 *, ub1 *, dvoid **);
sb4 php_oci_bind_out_callback(dvoid *, OCIBind *, ub4, ub4, dvoid **, ub4 **, ub1 *, dvoid **, ub2 **);
php_oci_out_column *php_oci_statement_get_column_helper(INTERNAL_FUNCTION_PARAMETERS, int need_data);

int php_oci_statement_get_type(php_oci_statement *, ub2 * TSRMLS_DC);
int php_oci_statement_get_numrows(php_oci_statement *, ub4 * TSRMLS_DC);
int php_oci_bind_array_by_name(php_oci_statement *statement, char *name, int name_len, zval* var, long max_table_length, long maxlength, long type TSRMLS_DC);
php_oci_bind *php_oci_bind_array_helper_number(zval* var, long max_table_length TSRMLS_DC);
php_oci_bind *php_oci_bind_array_helper_double(zval* var, long max_table_length TSRMLS_DC);
php_oci_bind *php_oci_bind_array_helper_string(zval* var, long max_table_length, long maxlength TSRMLS_DC);
php_oci_bind *php_oci_bind_array_helper_date(zval* var, long max_table_length, php_oci_connection *connection TSRMLS_DC);

/* }}} */

ZEND_BEGIN_MODULE_GLOBALS(oci) /* {{{ */
	sword errcode;			/* global last error code (used when connect fails, for example) */
	OCIError *err;			/* global error handle */
	
	/*
	char *default_username;
	char *default_password;
	char *default_dbname;
	*/

	zend_bool debug_mode;	/* debug mode flag */
	
	long max_persistent;	/* maximum number of persistent connections per process */
	long num_persistent;	/* number of existing persistent connections */
	long num_links;			/* non-persistent + persistent connections */
	long num_statements;	/* number of statements open */
	long ping_interval;		/* time interval between pings */
	long persistent_timeout;	/* time period after which idle persistent connection is considered expired */
	long statement_cache_size;	/* statement cache size. used with 9i+ clients only*/
	long default_prefetch;		/* default prefetch setting */
	zend_bool privileged_connect;	/* privileged connect flag (On/Off) */
	zend_bool old_oci_close_semantics;	/* old_oci_close_semantics flag (to determine the way oci_close() should behave) */
	
	int shutdown;				/* in shutdown flag */

	OCIEnv *env;				/* global environment handle */

	zend_bool in_call;

ZEND_END_MODULE_GLOBALS(oci) /* }}} */ 

#ifdef ZTS
#define OCI_G(v) TSRMG(oci_globals_id, zend_oci_globals *, v)
#else
#define OCI_G(v) (oci_globals.v)
#endif

ZEND_EXTERN_MODULE_GLOBALS(oci)

# endif /* !PHP_OCI8_INT_H */
#else /* !HAVE_OCI8 */

# define oci8_module_ptr NULL

#endif /* HAVE_OCI8 */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 */


