#ifndef ADB_H
#define ADB_H
#include <endian.h>
#include <stdint.h>
#include <sys/types.h>
#include "apk_io.h"
#include "apk_trust.h"
struct adb;
struct adb_obj;
struct adb_verify_ctx;
typedef uint32_t adb_val_t;
#define ADB_TYPE_SPECIAL 0x00000000
#define ADB_TYPE_INT 0x10000000
#define ADB_TYPE_INT_32 0x20000000
#define ADB_TYPE_INT_64 0x30000000
#define ADB_TYPE_BLOB_8 0x80000000
#define ADB_TYPE_BLOB_16 0x90000000
#define ADB_TYPE_BLOB_32 0xa0000000
#define ADB_TYPE_ARRAY 0xd0000000
#define ADB_TYPE_OBJECT 0xe0000000
#define ADB_TYPE_ERROR 0xf0000000
#define ADB_TYPE_MASK 0xf0000000
#define ADB_VALUE_MASK 0x0fffffff
#define ADB_VAL_TYPE(x) ((le32toh(x))&ADB_TYPE_MASK)
#define ADB_VAL_VALUE(x) ((le32toh(x))&ADB_VALUE_MASK)
#define ADB_IS_ERROR(x) (ADB_VAL_TYPE(x) == ADB_TYPE_ERROR)
#define ADB_VAL(type, val) (htole32((type) | (val)))
#define ADB_ERROR(val) ADB_VAL(ADB_TYPE_ERROR, val)
/* ADB_TYPE_SPECIAL */
#define ADB_VAL_NULL 0x00000000
#define ADB_VAL_TRUE 0x00000001
#define ADB_VAL_FALSE 0x00000002
#define ADB_NULL ADB_VAL(ADB_TYPE_SPECIAL, ADB_VAL_NULL)
/* Generic */
#define ADBI_NUM_ENTRIES 0x00
#define ADBI_FIRST 0x01
/* File Header */
#define ADB_FORMAT_MAGIC 0x2e424441 // ADB.
#define ADB_SCHEMA_IMPLIED 0x80000000
struct adb_header {
uint32_t magic;
uint32_t schema;
};
/* Blocks */
#define ADB_BLOCK_ALIGNMENT 8
#define ADB_BLOCK_ADB 0
#define ADB_BLOCK_SIG 2
#define ADB_BLOCK_DATA 3
struct adb_block {
uint32_t type_size;
};
static inline struct adb_block adb_block_init(uint32_t type, uint32_t length) {
return (struct adb_block) { .type_size = htole32((type << 30) + sizeof(struct adb_block) + length)};
}
static inline uint32_t adb_block_type(struct adb_block *b) { return le32toh((b)->type_size) >> 30; }
static inline uint32_t adb_block_rawsize(struct adb_block *b) { return le32toh((b)->type_size) & 0x3fffffff; }
static inline uint32_t adb_block_size(struct adb_block *b) { return ROUND_UP(adb_block_rawsize(b), ADB_BLOCK_ALIGNMENT); }
static inline uint32_t adb_block_length(struct adb_block *b) { return adb_block_rawsize(b) - sizeof(struct adb_block); }
static inline uint32_t adb_block_padding(struct adb_block *b) { return adb_block_size(b) - adb_block_rawsize(b); }
static inline void *adb_block_payload(struct adb_block *b) { return b + 1; }
static inline apk_blob_t adb_block_blob(struct adb_block *b) {
return APK_BLOB_PTR_LEN(adb_block_payload(b), adb_block_length(b));
}
#define ADB_MAX_SIGNATURE_LEN 2048
struct adb_sign_hdr {
uint8_t sign_ver, hash_alg;
};
struct adb_sign_v0 {
struct adb_sign_hdr hdr;
uint8_t id[16];
uint8_t sig[0];
};
/* Schema */
#define ADB_KIND_ADB 1
#define ADB_KIND_OBJECT 2
#define ADB_KIND_ARRAY 3
#define ADB_KIND_BLOB 4
#define ADB_KIND_INT 5
#define ADB_ARRAY_ITEM(_t) { { .kind = &(_t).kind } }
#define ADB_FIELD(_i, _n, _t) [(_i)-1] = { .name = _n, .kind = &(_t).kind }
struct adb_object_schema {
uint8_t kind;
uint16_t num_fields;
apk_blob_t (*tostring)(struct adb_obj *, char *, size_t);
int (*fromstring)(struct adb_obj *, apk_blob_t);
int (*compare)(const struct adb_obj *, const struct adb_obj *);
void (*pre_commit)(struct adb_obj *);
struct {
const char *name;
const uint8_t *kind;
} fields[];
};
struct adb_scalar_schema {
uint8_t kind;
uint8_t multiline : 1;
apk_blob_t (*tostring)(struct adb*, adb_val_t, char *, size_t);
adb_val_t (*fromstring)(struct adb*, apk_blob_t);
int (*compare)(struct adb*, adb_val_t, struct adb*, adb_val_t);
};
struct adb_adb_schema {
uint8_t kind;
uint32_t schema_id;
const struct adb_object_schema *schema;
};
/* Database read interface */
struct adb_w_bucket {
struct list_head node;
struct adb_w_bucket_entry {
uint32_t hash;
uint32_t offs;
uint32_t len;
} entries[40];
};
struct adb {
struct apk_istream *is;
apk_blob_t adb;
struct adb_header hdr;
size_t num_buckets;
size_t alloc_len;
struct list_head *bucket;
};
struct adb_obj {
struct adb *db;
const struct adb_object_schema *schema;
uint32_t num;
adb_val_t *obj;
};
/* Container read interface */
static inline void adb_init(struct adb *db) { memset(db, 0, sizeof *db); }
int adb_free(struct adb *);
void adb_reset(struct adb *);
int adb_m_blob(struct adb *, apk_blob_t, struct apk_trust *);
int adb_m_process(struct adb *db, struct apk_istream *is, uint32_t expected_schema, struct apk_trust *trust, int (*cb)(struct adb *, struct adb_block *, struct apk_istream *));
static inline int adb_m_open(struct adb *db, struct apk_istream *is, uint32_t expected_schema, struct apk_trust *trust) {
return adb_m_process(db, is, expected_schema, trust, 0);
}
#define adb_w_init_alloca(db, schema, num_buckets) adb_w_init_dynamic(db, schema, alloca(sizeof(struct list_head[num_buckets])), num_buckets)
#define adb_w_init_tmp(db, size) adb_w_init_static(db, alloca(size), size)
int adb_w_init_dynamic(struct adb *db, uint32_t schema, void *buckets, size_t num_buckets);
int adb_w_init_static(struct adb *db, void *buf, size_t bufsz);
/* Primitive read */
adb_val_t adb_r_root(const struct adb *);
struct adb_obj *adb_r_rootobj(struct adb *a, struct adb_obj *o, const struct adb_object_schema *);
uint32_t adb_r_int(const struct adb *, adb_val_t);
apk_blob_t adb_r_blob(const struct adb *, adb_val_t);
struct adb_obj *adb_r_obj(struct adb *, adb_val_t, struct adb_obj *o, const struct adb_object_schema *);
/* Object read */
static inline uint32_t adb_ro_num(const struct adb_obj *o) { return o->num; }
static inline uint32_t adb_ra_num(const struct adb_obj *o) { return (o->num ?: 1) - 1; }
const uint8_t *adb_ro_kind(const struct adb_obj *o, unsigned i);
adb_val_t adb_ro_val(const struct adb_obj *o, unsigned i);
uint32_t adb_ro_int(const struct adb_obj *o, unsigned i);
apk_blob_t adb_ro_blob(const struct adb_obj *o, unsigned i);
struct adb_obj *adb_ro_obj(const struct adb_obj *o, unsigned i, struct adb_obj *);
int adb_ro_cmp(const struct adb_obj *o1, const struct adb_obj *o2, unsigned i);
int adb_ra_find(struct adb_obj *arr, int cur, struct adb *db, adb_val_t val);
/* Primitive write */
void adb_w_root(struct adb *, adb_val_t);
void adb_w_rootobj(struct adb_obj *);
adb_val_t adb_w_blob(struct adb *, apk_blob_t);
adb_val_t adb_w_int(struct adb *, uint32_t);
adb_val_t adb_w_copy(struct adb *, struct adb *, adb_val_t);
adb_val_t adb_w_adb(struct adb *, struct adb *);
adb_val_t adb_w_fromstring(struct adb *, const uint8_t *kind, apk_blob_t);
/* Object write */
#define adb_wo_alloca(o, schema, db) adb_wo_init(o, alloca(sizeof(adb_val_t[(schema)->num_fields])), schema, db)
struct adb_obj *adb_wo_init(struct adb_obj *, adb_val_t *, const struct adb_object_schema *, struct adb *);
struct adb_obj *adb_wo_init_val(struct adb_obj *, adb_val_t *, const struct adb_obj *, unsigned i);
void adb_wo_reset(struct adb_obj *);
void adb_wo_resetdb(struct adb_obj *);
adb_val_t adb_w_obj(struct adb_obj *);
adb_val_t adb_w_arr(struct adb_obj *);
adb_val_t adb_wo_fromstring(struct adb_obj *o, apk_blob_t);
adb_val_t adb_wo_val(struct adb_obj *o, unsigned i, adb_val_t);
adb_val_t adb_wo_val_fromstring(struct adb_obj *o, unsigned i, apk_blob_t);
adb_val_t adb_wo_int(struct adb_obj *o, unsigned i, uint32_t);
adb_val_t adb_wo_blob(struct adb_obj *o, unsigned i, apk_blob_t);
adb_val_t adb_wo_obj(struct adb_obj *o, unsigned i, struct adb_obj *);
adb_val_t adb_wo_arr(struct adb_obj *o, unsigned i, struct adb_obj *);
adb_val_t adb_wa_append(struct adb_obj *o, adb_val_t);
adb_val_t adb_wa_append_obj(struct adb_obj *o, struct adb_obj *);
adb_val_t adb_wa_append_fromstring(struct adb_obj *o, apk_blob_t);
void adb_wa_sort(struct adb_obj *);
void adb_wa_sort_unique(struct adb_obj *);
/* Schema helpers */
int adb_s_field_by_name_blob(const struct adb_object_schema *schema, apk_blob_t blob);
int adb_s_field_by_name(const struct adb_object_schema *, const char *);
/* Creation */
int adb_c_header(struct apk_ostream *os, struct adb *db);
int adb_c_block(struct apk_ostream *os, uint32_t type, apk_blob_t);
int adb_c_block_data(struct apk_ostream *os, apk_blob_t hdr, uint32_t size, struct apk_istream *is);
int adb_c_block_copy(struct apk_ostream *os, struct adb_block *b, struct apk_istream *is, struct adb_verify_ctx *);
int adb_c_adb(struct apk_ostream *os, struct adb *db, struct apk_trust *t);
int adb_c_create(struct apk_ostream *os, struct adb *db, struct apk_trust *t);
/* Trust */
struct adb_verify_ctx {
uint32_t calc;
struct apk_digest sha512;
};
int adb_trust_write_signatures(struct apk_trust *trust, struct adb *db, struct adb_verify_ctx *vfy, struct apk_ostream *os);
int adb_trust_verify_signature(struct apk_trust *trust, struct adb *db, struct adb_verify_ctx *vfy, apk_blob_t sigb);
/* SAX style event based handling of ADB */
struct adb_db_schema {
unsigned long magic;
const struct adb_object_schema *root;
};
struct adb_walk;
struct adb_walk_ops {
int (*schema)(struct adb_walk *, uint32_t schema_id);
int (*comment)(struct adb_walk *, apk_blob_t comment);
int (*start_array)(struct adb_walk *, unsigned int num_items);
int (*start_object)(struct adb_walk *);
int (*end)(struct adb_walk *);
int (*key)(struct adb_walk *, apk_blob_t key_name);
int (*scalar)(struct adb_walk *, apk_blob_t scalar, int multiline);
};
extern const struct adb_walk_ops adb_walk_gentext_ops, adb_walk_genadb_ops;
struct adb_walk {
const struct adb_walk_ops *ops;
const struct adb_db_schema *schemas;
};
struct adb_walk_gentext {
struct adb_walk d;
FILE *out;
int nest;
int line_started : 1;
int key_printed : 1;
};
#define ADB_WALK_GENADB_MAX_IDB 2
#define ADB_WALK_GENADB_MAX_NESTING 32
#define ADB_WALK_GENADB_MAX_VALUES 100000
struct adb_walk_genadb {
struct adb_walk d;
struct adb db;
adb_val_t stored_object;
struct adb idb[ADB_WALK_GENADB_MAX_IDB];
int nest, nestdb, num_vals;
struct adb_obj objs[ADB_WALK_GENADB_MAX_NESTING];
unsigned int curkey[ADB_WALK_GENADB_MAX_NESTING];
adb_val_t vals[ADB_WALK_GENADB_MAX_VALUES];
};
int adb_walk_adb(struct adb_walk *d, struct apk_istream *is, struct apk_trust *trust);
int adb_walk_text(struct adb_walk *d, struct apk_istream *is);
// Seamless compression support
typedef unsigned int adb_comp_t;
#define ADB_COMP_NONE 0
#define ADB_COMP_DEFLATE 1
struct apk_istream *adb_decompress(struct apk_istream *is, adb_comp_t *compression);
struct apk_ostream *adb_compress(struct apk_ostream *os, adb_comp_t compression);
#endif
