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#include "adb.h"
#include <stdio.h>
#include <unistd.h>
#include <assert.h>
#include "apk_adb.h"
#include "apk_applet.h"
#include "apk_print.h"
struct adb_walk_ctx {
struct adb_walk *d;
struct adb *db;
struct apk_trust *trust;
};
static int dump_object(struct adb_walk_ctx *ctx, const struct adb_object_schema *schema, adb_val_t v);
static int dump_adb(struct adb_walk_ctx *ctx);
static int dump_item(struct adb_walk_ctx *ctx, const char *name, const uint8_t *kind, adb_val_t v)
{
struct adb_walk *d = ctx->d;
struct adb db, *origdb;
struct adb_obj o;
struct adb_object_schema *obj_schema;
char tmp[256];
apk_blob_t b;
if (v == ADB_VAL_NULL) return 0;
d->ops->key(d, name ? APK_BLOB_STR(name) : APK_BLOB_NULL);
switch (*kind) {
case ADB_KIND_ARRAY:
obj_schema = container_of(kind, struct adb_object_schema, kind);
adb_r_obj(ctx->db, v, &o, obj_schema);
//if (!adb_ra_num(&o)) return 0;
d->ops->start_array(d, adb_ra_num(&o));
for (size_t i = ADBI_FIRST; i <= adb_ra_num(&o); i++) {
dump_item(ctx, NULL, obj_schema->fields[0].kind, adb_ro_val(&o, i));
}
d->ops->end(d);
break;
case ADB_KIND_ADB:
db.hdr.schema = container_of(kind, struct adb_adb_schema, kind)->schema_id;
db.data = adb_r_blob(ctx->db, v);
origdb = ctx->db;
ctx->db = &db;
d->ops->start_object(d);
dump_adb(ctx);
d->ops->end(d);
ctx->db = origdb;
break;
case ADB_KIND_OBJECT:
d->ops->start_object(d);
dump_object(ctx, container_of(kind, struct adb_object_schema, kind), v);
d->ops->end(d);
break;
case ADB_KIND_BLOB:
case ADB_KIND_INT:;
struct adb_scalar_schema *scalar = container_of(kind, struct adb_scalar_schema, kind);
if (scalar->tostring) {
b = scalar->tostring(ctx->db, v, tmp, sizeof tmp);
} else {
b = APK_BLOB_STR("(unknown)");
}
if (!APK_BLOB_IS_NULL(b))
d->ops->scalar(d, b, scalar->multiline);
break;
}
return 0;
}
static int dump_object(struct adb_walk_ctx *ctx, const struct adb_object_schema *schema, adb_val_t v)
{
size_t schema_len = 0;
struct adb_obj o;
char tmp[256];
apk_blob_t b;
struct adb_walk *d = ctx->d;
adb_r_obj(ctx->db, v, &o, schema);
if (schema) {
if (schema->tostring) {
b = schema->tostring(&o, tmp, sizeof tmp);
if (!APK_BLOB_IS_NULL(b))
d->ops->scalar(d, b, 0);
return 0;
}
schema_len = schema->num_fields;
}
for (size_t i = ADBI_FIRST; i < adb_ro_num(&o); i++) {
adb_val_t val = adb_ro_val(&o, i);
if (val == ADB_NULL) continue;
if (i < schema_len && schema->fields[i-1].kind != 0) {
dump_item(ctx, schema->fields[i-1].name, schema->fields[i-1].kind, val);
}
}
return 0;
}
static int dump_adb(struct adb_walk_ctx *ctx)
{
char tmp[256];
struct adb_block *blk;
struct adb_sign_hdr *s;
struct adb_verify_ctx vfy = {};
unsigned char *id;
uint32_t schema_magic = ctx->db->hdr.schema;
const struct adb_db_schema *ds;
struct adb_walk *d = ctx->d;
int r, len;
for (ds = d->schemas; ds->magic; ds++)
if (ds->magic == schema_magic) break;
adb_foreach_block(blk, ctx->db->data) {
apk_blob_t b = APK_BLOB_PTR_LEN((char*)(blk+1), ADB_BLOCK_SIZE(blk));
switch (ADB_BLOCK_TYPE(blk)) {
case ADB_BLOCK_ADB:
len = snprintf(tmp, sizeof tmp, "ADB block, size: %u", ADB_BLOCK_SIZE(blk));
d->ops->comment(d, APK_BLOB_PTR_LEN(tmp, len));
if (ds->root) {
ctx->db->adb = b;
dump_object(ctx, ds->root, adb_r_root(ctx->db));
}
break;
case ADB_BLOCK_SIG:
s = (struct adb_sign_hdr*) b.ptr;
r = adb_trust_verify_signature(ctx->trust, ctx->db, &vfy, b);
len = snprintf(tmp, sizeof tmp, "signature: v%d ", s->sign_ver);
switch (s->sign_ver) {
case 0:
id = (unsigned char*)(s + 1);
for (size_t j = 0; j < 16; j++)
len += snprintf(&tmp[len], sizeof tmp - len, "%02x", id[j]);
break;
default:
break;
}
len += snprintf(&tmp[len], sizeof tmp - len, ": %s", r ? apk_error_str(r) : "OK");
d->ops->comment(d, APK_BLOB_PTR_LEN(tmp, len));
break;
default:
len = snprintf(tmp, sizeof tmp, "unknown block %d, size: %d",
ADB_BLOCK_TYPE(blk), ADB_BLOCK_SIZE(blk));
d->ops->comment(d, APK_BLOB_PTR_LEN(tmp, len));
}
}
if (IS_ERR(blk)) {
d->ops->comment(d, APK_BLOB_STRLIT("block enumeration error: corrupt data area"));
}
return 0;
}
int adb_walk_adb(struct adb_walk *d, struct adb *db, struct apk_trust *trust)
{
struct adb_walk_ctx ctx = {
.d = d,
.db = db,
.trust = trust,
};
return dump_adb(&ctx);
}
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