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/*
** msql_priv.h - Private (internal) definitions
**
**
** Copyright (c) 1993-95 David J. Hughes
** Copyright (c) 1995 Hughes Technologies Pty Ltd
**
** Permission to use, copy, and distribute for non-commercial purposes,
** is hereby granted without fee, providing that the above copyright
** notice appear in all copies and that both the copyright notice and this
** permission notice appear in supporting documentation.
**
** This software is provided "as is" without any expressed or implied warranty.
**
** ID = "msql_priv.h,v 1.3 1994/08/19 08:03:14 bambi Exp"
*/
#include "version.h"
#ifdef NEW_DB
# include <limits.h>
# include <db.h>
#endif
/***************************************************************************
* Configuration parameters
*/
#define MAX_FIELDS 75 /* Max fields per query */
#define MAX_CON 24 /* Max connections */
#define BUF_SIZE (256*1024) /* Read buf size if no mmap() */
#define NAME_LEN 20 /* Field/table name length */
#define PKT_LEN (32*1024) /* Max size of client/server packet */
#define CACHE_SIZE 8 /* Size of table cache */
/***************************************************************************
** Internal structures
*/
/*
** Identifier format. Multi-part to enable stuff like "emp.name"
*/
typedef struct ident_s {
char seg1[NAME_LEN],
seg2[NAME_LEN];
} ident_t;
/*
** Field value storage union
*/
typedef struct val_s {
union val_u {
int intVal;
u_char *charVal;
double realVal;
ident_t *identVal;
} val;
int type,
nullVal,
dataLen;
} val_t;
typedef struct tname_s {
char name[NAME_LEN + 1],
cname[NAME_LEN + 1];
struct tname_s *next;
} tname_t;
/*
** Internal field list element
*/
typedef struct field_ps {
char table[NAME_LEN],
name[NAME_LEN];
val_t *value;
int type,
length,
null,
flags;
struct field_ps *next;
} field_t;
/*
** Where clause list element
*/
typedef struct cond_s {
char table[NAME_LEN + 1],
name[NAME_LEN + 1];
val_t *value;
int op,
bool,
type,
length;
struct cond_s *next;
} cond_t;
typedef struct tlist_s {
char name[NAME_LEN + 1];
struct tlist_s *next;
} tlist_t;
/*
** Order clause list element
*/
typedef struct order_s {
char table[NAME_LEN + 1],
name[NAME_LEN + 1];
int dir,
type,
length;
struct order_s *next;
} order_t;
/*
** Table cache entry struct
*/
typedef struct cache_s {
char DB[NAME_LEN + 1],
cname[NAME_LEN + 1],
table[NAME_LEN + 1],
resInfo[4 * NAME_LEN]; /* used for debugging info */
u_char *rowBuf,
*keyBuf;
int age,
stackFD,
dataFD,
keyFD,
rowLen,
keyLen,
result;
u_int numRows;
field_t *def;
#ifdef NEW_DB
DB *dbp;
#endif
#ifdef HAVE_MMAP
int remapData,
remapKey,
remapStack;
caddr_t dataMap,
keyMap,
stackMap;
off_t size,
keySize,
stackSize;
#else
char readBuf[BUF_SIZE];
u_int firstRow,
lastRow;
#endif
} cache_t;
typedef struct pkey_s {
char *table,
*name;
val_t *value;
int type,
length,
op;
} pkey_t;
typedef struct cinfo_s {
char *db,
*host,
*user;
int access;
struct sockaddr_in local, remote;
} cinfo_t;
/***************************************************************************
* External variables (var's defined in msql_proc.c)
*/
#ifndef MSQL_ADT
extern int command,
notnullflag,
keyflag,
msqlSelectLimit;
extern char *arrayLen;
extern cond_t *condHead;
extern field_t *fieldHead;
extern order_t *orderHead;
extern tlist_t *tableHead;
#endif
/***************************************************************************
* YACC stack type
*/
#ifdef YYSTYPE
# undef YYSTYPE
#endif
typedef char * C_PTR;
#define YYSTYPE C_PTR
/***************************************************************************
* Macros and other constants
*/
#define EQ_OP 1
#define LT_OP 2
#define GT_OP 3
#define NE_OP 4
#define LE_OP 5
#define GE_OP 6
#define LIKE_OP 7
#define NOT_LIKE_OP 8
#define NO_BOOL 0
#define AND_BOOL 1
#define OR_BOOL 2
#define MEM_ALIGN 4
#define QUIT 1
#define INIT_DB 2
#define QUERY 3
#define DB_LIST 4
#define TABLE_LIST 5
#define FIELD_LIST 6
#define CREATE_DB 7
#define DROP_DB 8
#define RELOAD_ACL 9
#define SHUTDOWN 10
#define NO_REMAP 0
#define DATA_REMAP 1
#define KEY_REMAP 2
#define STACK_REMAP 4
#define FULL_REMAP 0xffff
#define DEST_CLIENT 1
#define DEST_TABLE 2
#define NO_ACCESS 0
#define READ_ACCESS 1
#define WRITE_ACCESS 2
#define RW_ACCESS READ_ACCESS | WRITE_ACCESS
static char *comTable[] = {
"???", "Quit", "Init DB", "Query", "DB List", "Table List",
"Field List", "Create DB", "Drop DB", "Reload ACL",
"Shutdown", "???" };
#define MALLOC_BLK 1
#define MMAP_BLK 2
static char *blockTags[] = {
"ERROR : Unknown block tag",
"malloc()",
"mmap()",
"ERROR : Unknown block tag"
};
void writePkt();
int readPkt();
#ifndef _MSQL_SERVER_SOURCE
extern char *msqlHomeDir;
#endif
/*
** Inline definitions
*/
/* inlined, unaligned, 4-byte copy */
#define bcopy4(s,d) \
((((unsigned char *)d)[0] = ((unsigned char *)s)[0]), \
(((unsigned char *)d)[1] = ((unsigned char *)s)[1]), \
(((unsigned char *)d)[2] = ((unsigned char *)s)[2]), \
(((unsigned char *)d)[3] = ((unsigned char *)s)[3]))
/* inlined, unaligned, 8-byte copy */
#define bcopy8(s,d) \
((((unsigned char *)d)[0] = ((unsigned char *)s)[0]), \
(((unsigned char *)d)[1] = ((unsigned char *)s)[1]), \
(((unsigned char *)d)[2] = ((unsigned char *)s)[2]), \
(((unsigned char *)d)[3] = ((unsigned char *)s)[3]), \
(((unsigned char *)d)[4] = ((unsigned char *)s)[4]), \
(((unsigned char *)d)[5] = ((unsigned char *)s)[5]), \
(((unsigned char *)d)[6] = ((unsigned char *)s)[6]), \
(((unsigned char *)d)[7] = ((unsigned char *)s)[7]))
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