f4ba41ebdd
[Code reviewed by Love Hörnquist Åstrand <lha@kth.se>] Added heim_db_*() entry points for dealing with databases, and make krb5_aname_to_localname() use it. The following enhancements to libheimbase are included: - Add heim_data_t and heim_string_t "reference" variants to avoid memory copies of potentially large data/strings. See heim_data_ref_create() and heim_string_ref_create(). - Added enhancements to heim_array_t to allow their use for queues and stacks, and to improve performance. See heim_array_insert_value(). - Added XPath-like accessors for heim_object_t. See heim_path_get(), heim_path_copy(), heim_path_create(), and heim_path_delete(). These are used extensively in the DB framework's generic composition of ACID support and in the test_base program - Made libheimbase more consistent with Core Foundation naming conventions. See heim_{dict, array}_{get, copy}_value() and heim_path_{get, copy}(). - Added functionality to and fixed bugs in base/json.c: - heim_serialize(); - depth limit for JSON parsing (for DoS protection); - pretty-printing; - JSON compliance (see below); - flag options for parsing and serializing; these are needed because of impedance mismatches between heim_object_t and JSON (e.g., heim_dict_t allows non-string keys, but JSON does not; heimbase supports binary data, while JSON does not). - Added heim_error_enomem(). - Enhanced the test_base program to test new functionality and to use heim_path*() to better test JSON encoding. This includes some fuzz testing of JSON parsing, and running the test under valgrind. - Started to add doxygen documentation for libheimbase (but doc build for libheimbase is still incomplete). Note that there's still some incomplete JSON support: - JSON string quoting is not fully implemented; - libheimbase lacks support for real numbers, while JSON has it -- otherwise libheimbase is a superset of JSON, specifically in that any heim_object_t can be a key for an associative array. The following DB backends are supported natively: - "sorted-text", a binary search of sorted (in C locale), flat text files; - "json", a backend that stores DB contents serialized as JSON (this is intended for configuration-like contents). The DB framework supports: - multiple key/value tables per-DB - ACID transactions The DB framework also natively implements ACID transactions for any DB backends that a) do not provide transactions natively, b) do provide lock/unlock/sync methods (even on Windows). This includes autocommit of DB updates outside transactions. Future DB enhancements may include: - add backends for various DB types (BDB, CDB, MDB, ...); - make libhdb use heim_db_t; - add a command-line tool for interfacing to databases via libheimbase (e.g., to get/set/delete values, create/copy/ backup DBs, inspect history, check integrity); - framework-level transaction logging (with redo and undo logging), for generic incremental replication; - framework-level DB integrity checking. We could store a MAC of the XOR of a hash function applied to {key, value} for every entry in the DB, then use this to check DB integrity incrementally during incremental replication, as well as for the whole DB.
105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
/*
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* Copyright (c) 2010 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Portions Copyright (c) 2010 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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typedef void (*heim_type_init)(void *);
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typedef heim_object_t (*heim_type_copy)(void *);
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typedef int (*heim_type_cmp)(void *, void *);
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typedef unsigned long (*heim_type_hash)(void *);
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typedef struct heim_type_data *heim_type_t;
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enum {
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HEIM_TID_NUMBER = 0,
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HEIM_TID_NULL = 1,
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HEIM_TID_BOOL = 2,
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HEIM_TID_TAGGED_UNUSED2 = 3, /* reserved for tagged object types */
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HEIM_TID_TAGGED_UNUSED3 = 4, /* reserved for tagged object types */
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HEIM_TID_TAGGED_UNUSED4 = 5, /* reserved for tagged object types */
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HEIM_TID_TAGGED_UNUSED5 = 6, /* reserved for tagged object types */
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HEIM_TID_TAGGED_UNUSED6 = 7, /* reserved for tagged object types */
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HEIM_TID_MEMORY = 128,
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HEIM_TID_ARRAY = 129,
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HEIM_TID_DICT = 130,
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HEIM_TID_STRING = 131,
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HEIM_TID_AUTORELEASE = 132,
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HEIM_TID_ERROR = 133,
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HEIM_TID_DATA = 134,
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HEIM_TID_DB = 135,
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HEIM_TID_USER = 255
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};
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struct heim_type_data {
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heim_tid_t tid;
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const char *name;
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heim_type_init init;
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heim_type_dealloc dealloc;
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heim_type_copy copy;
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heim_type_cmp cmp;
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heim_type_hash hash;
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};
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heim_type_t _heim_get_isa(heim_object_t);
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heim_type_t
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_heim_create_type(const char *name,
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heim_type_init init,
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heim_type_dealloc dealloc,
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heim_type_copy copy,
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heim_type_cmp cmp,
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heim_type_hash hash);
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heim_object_t
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_heim_alloc_object(heim_type_t type, size_t size);
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void *
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_heim_get_isaextra(heim_object_t o, size_t idx);
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heim_tid_t
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_heim_type_get_tid(heim_type_t type);
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void
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_heim_make_permanent(heim_object_t ptr);
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heim_data_t
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_heim_db_get_value(heim_db_t, heim_string_t, heim_data_t, heim_error_t *);
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/* tagged tid */
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extern struct heim_type_data _heim_null_object;
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extern struct heim_type_data _heim_bool_object;
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extern struct heim_type_data _heim_number_object;
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extern struct heim_type_data _heim_string_object;
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