/* MDB Tools - A library for reading MS Access database files * Copyright (C) 2000 Brian Bruns * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifndef _mdbtools_h_ #define _mdbtools_h_ #include #include #include #include #include #include #include #include #define MDB_PGSIZE 4096 #define MDB_MAX_OBJ_NAME 30 #define MDB_MAX_COLS 256 #define MDB_MAX_IDX_COLS 10 #define MDB_CATALOG_PG 18 #define MDB_MEMO_OVERHEAD 12 #define MDB_BIND_SIZE 4096 enum { MDB_VER_JET3 = 0, MDB_VER_JET4 = 1 }; enum { MDB_FORM = 0, MDB_TABLE, MDB_MACRO, MDB_SYSTEM_TABLE, MDB_REPORT, MDB_QUERY, MDB_LINKED_TABLE, MDB_MODULE, MDB_RELATIONSHIP, MDB_UNKNOWN_09, MDB_UNKNOWN_0A, MDB_DATABASE_PROPERTY }; enum { MDB_BOOL = 0x01, MDB_BYTE = 0x02, MDB_INT = 0x03, MDB_LONGINT = 0x04, MDB_MONEY = 0x05, MDB_FLOAT = 0x06, MDB_DOUBLE = 0x07, MDB_SDATETIME = 0x08, MDB_TEXT = 0x0a, MDB_OLE = 0x0b, MDB_MEMO = 0x0c, MDB_REPID = 0x0f }; /* SARG operators */ enum { MDB_EQUAL = 1, MDB_GT, MDB_LT, MDB_GTEQ, MDB_LTEQ, MDB_LIKE, MDB_ISNULL, MDB_NOTNULL }; enum { MDB_ASC, MDB_DESC }; /* hash to store registered backends */ GHashTable *mdb_backends; typedef struct { char **types_table; } MdbBackend; typedef struct { int fd; char *filename; guint16 cur_pg; guint16 row_num; unsigned int cur_pos; unsigned char pg_buf[MDB_PGSIZE]; unsigned char alt_pg_buf[MDB_PGSIZE]; int num_catalog; GPtrArray *catalog; int pg_size; guint32 jet_version; guint32 db_key; char db_passwd[14]; MdbBackend *default_backend; char *backend_name; /* offset to row count on data pages...version dependant */ guint16 row_count_offset; guint16 tab_num_rows_offset; guint16 tab_num_cols_offset; guint16 tab_num_idxs_offset; guint16 tab_num_ridxs_offset; guint16 tab_first_dpg_offset; guint16 tab_cols_start_offset; guint16 tab_ridx_entry_size; guint16 col_fixed_offset; guint16 col_num_offset; guint16 col_size_offset; guint16 tab_col_entry_size; } MdbHandle; typedef struct { MdbHandle *mdb; char object_name[MDB_MAX_OBJ_NAME+1]; int object_type; unsigned long table_pg; /* misnomer since object may not be a table */ unsigned long kkd_pg; unsigned int kkd_rowid; int num_props; GArray *props; GArray *columns; } MdbCatalogEntry; typedef struct { MdbCatalogEntry *entry; char name[MDB_MAX_OBJ_NAME+1]; int num_cols; GPtrArray *columns; int num_rows; int index_start; int num_real_idxs; int num_idxs; GPtrArray *indices; int first_data_pg; int cur_pg_num; int cur_phys_pg; int cur_row; int noskip_del; /* don't skip deleted rows */ /* object allocation map */ int map_base_pg; int map_sz; unsigned char *usage_map; /* */ } MdbTableDef; typedef struct { int index_num; char name[MDB_MAX_OBJ_NAME+1]; unsigned char index_type; int first_pg; int num_rows; /* number rows in index */ int num_keys; short key_col_num[MDB_MAX_IDX_COLS]; unsigned char key_col_order[MDB_MAX_IDX_COLS]; } MdbIndex; typedef struct { char name[MDB_MAX_OBJ_NAME+1]; } MdbColumnProp; typedef struct { char name[MDB_MAX_OBJ_NAME+1]; int col_type; int col_size; void *bind_ptr; int *len_ptr; GHashTable *properties; int num_sargs; GPtrArray *sargs; unsigned char is_fixed; int query_order; int col_num; int cur_value_start; int cur_value_len; } MdbColumn; typedef union { int i; double d; char s[256]; } MdbAny; typedef struct { int op; MdbAny value; } MdbSarg; /* mem.c */ extern void mdb_init(); extern void mdb_exit(); extern MdbHandle *mdb_alloc_handle(); extern void mdb_free_handle(MdbHandle *mdb); extern void mdb_free_catalog(MdbHandle *mdb); extern MdbTableDef *mdb_alloc_tabledef(MdbCatalogEntry *entry); /* file.c */ extern size_t mdb_read_pg(MdbHandle *mdb, unsigned long pg); extern size_t mdb_read_alt_pg(MdbHandle *mdb, unsigned long pg); extern unsigned char mdb_get_byte(MdbHandle *mdb, int offset); extern int mdb_get_int16(MdbHandle *mdb, int offset); extern long mdb_get_int32(MdbHandle *mdb, int offset); extern float mdb_get_single(MdbHandle *mdb, int offset); extern double mdb_get_double(MdbHandle *mdb, int offset); extern MdbHandle *mdb_open(char *filename); /* catalog.c */ extern void mdb_catalog_dump(MdbHandle *mdb, int obj_type); extern int mdb_catalog_rows(MdbHandle *mdb); extern MdbCatalogEntry *mdb_get_catalog_entry(MdbHandle *mdb, int rowid, MdbCatalogEntry *entry); extern char *mdb_get_objtype_string(int obj_type); /* table.c */ extern MdbTableDef *mdb_read_table(MdbCatalogEntry *entry); /* data.c */ extern void mdb_data_dump(MdbTableDef *table); extern void mdb_bind_column(MdbTableDef *table, int col_num, void *bind_ptr); extern int mdb_rewind_table(MdbTableDef *table); extern int mdb_fetch_row(MdbTableDef *table); extern int mdb_is_fixed_col(MdbColumn *col); extern char *mdb_col_to_string(MdbHandle *mdb, int start, int datatype, int size); /* dump.c */ extern void buffer_dump(const unsigned char* buf, int start, int end); /* backend.c */ extern char *mdb_get_coltype_string(MdbBackend *backend, int col_type); extern void mdb_init_backends(); extern void mdb_register_backend(MdbBackend *backend, char *backend_name); extern int mdb_set_default_backend(MdbHandle *mdb, char *backend_name); extern char *mdb_get_relationships(MdbHandle *mdb); #endif /* _mdbtools_h_ */