111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/****************************************************************
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* *
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* Copyright 2009, 2012 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#ifndef GTMCRYPT_DBK_REF_H
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#define GTMCRYPT_DBK_REF_H
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#define DATABASE_LINE_INFO 0
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#define SYMMETRIC_KEY_LINE_INFO 1
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#define DATABASE_LINE_INDICATOR "dat "
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#define SYMMETRIC_KEY_LINE_INDICATOR "key "
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#define DATABASE_LINE_INDICATOR_SIZE (SIZEOF(DATABASE_LINE_INDICATOR) - 1)
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#define SYMMETRIC_KEY_LINE_INDICATOR_SIZE (SIZEOF(SYMMETRIC_KEY_LINE_INDICATOR) - 1)
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#ifdef LINE_MAX
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#undef LINE_MAX
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#endif
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#define LINE_MAX (GTM_PATH_MAX + DATABASE_LINE_INDICATOR_SIZE + 2) /* 2 is just for safety */
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typedef struct gtm_dbkeys_tbl_struct
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{
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struct gtm_dbkeys_tbl_struct *next;
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int fileid_dirty;
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int symmetric_key_dirty;
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int index;
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int database_fn_len;
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char database_fn[GTM_PATH_MAX + 1];
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char symmetric_key_fn[GTM_PATH_MAX + 1];
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unsigned char symmetric_key[SYMMETRIC_KEY_MAX + 1];
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unsigned char symmetric_key_hash[GTMCRYPT_HASH_LEN + 1];
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xc_fileid_ptr_t fileid;
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crypt_key_t encr_key_handle;
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crypt_key_t decr_key_handle;
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} gtm_dbkeys_tbl;
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void gc_dbk_scrub_entries(void);
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gtm_dbkeys_tbl* gc_dbk_get_entry_by_fileid(xc_fileid_ptr_t fileid);
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gtm_dbkeys_tbl* gc_dbk_get_entry_by_hash(xc_string_t *hash);
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xc_status_t gc_dbk_fill_gtm_dbkeys_fname(char *fname);
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xc_status_t gc_dbk_load_entries_from_file(void);
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xc_status_t gc_dbk_fill_sym_key_and_hash(xc_fileid_ptr_t req_fileid, char *req_hash);
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void gc_dbk_get_hash(gtm_dbkeys_tbl *entry, xc_string_t *hash);
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#define GC_FREE_TBL_ENTRY(X) \
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{ \
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gtm_xcfileid_free_fptr((X)->fileid); \
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memset((X)->symmetric_key, 0, SYMMETRIC_KEY_MAX); \
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memset((X)->symmetric_key_hash, 0, GTMCRYPT_HASH_LEN); \
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GC_FREE(X); \
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}
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#define GC_ALLOCATE_TBL_ENTRY(X) \
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{ \
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GC_MALLOC((X), SIZEOF(gtm_dbkeys_tbl), gtm_dbkeys_tbl); \
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(X)->fileid_dirty = TRUE; \
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(X)->symmetric_key_dirty = TRUE; \
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(X)->fileid = NULL; \
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(X)->index = 0; \
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}
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/* After the preliminary search, if we haven't found our entry in the in-memory linked list for the given hash/fileid, we try
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* reloading the db key file (just in case it has been changed since last time) and re-organize our in-memory linked list
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*/
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#define GC_DBK_RELOAD_IF_NEEDED(entry, RC, fileid, req_hash) \
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{ \
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if (NULL == entry) \
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{ \
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if (0 != gc_dbk_load_entries_from_file()) \
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return GC_FAILURE; \
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RC = gc_dbk_fill_sym_key_and_hash(fileid, req_hash); \
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} \
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}
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#define GC_DBK_GET_ENTRY_FROM_HANDLE(handle, entry, ret) \
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{ \
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GBLREF int num_entries; \
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GBLREF gtm_dbkeys_tbl **fast_lookup_entry; \
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\
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int idx; \
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\
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idx = (int)handle; \
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if (idx < 0 || (idx > num_entries)) \
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{ \
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UPDATE_ERROR_STRING("Encryption handle corrupted."); \
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entry = NULL; \
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return ret; \
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} else \
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entry = (gtm_dbkeys_tbl *)fast_lookup_entry[idx]; \
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}
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#define GC_DBK_FILENAME_TO_ID(filename, fileid) \
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{ \
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if (TRUE != gtm_filename_to_id_fptr(filename, &fileid)) \
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{ \
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UPDATE_ERROR_STRING("Database file %s not found", filename->address); \
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return GC_FAILURE; \
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} \
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}
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#endif /* GTMCRYPT_DBK_REF_H */
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