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#include <stdio.h>
#include <unistd.h>
#include <assert.h>
#include "apk_adb.h"
#include "apk_applet.h"
#include "apk_print.h"
struct adb_dump_ctx {
struct adb *db;
struct adb_trust *trust;
char prefix[128], *pfx;
};
struct adb_db_schema {
unsigned long magic;
const struct adb_object_schema *root;
};
static void ctx_nest(struct adb_dump_ctx *ctx, unsigned depth)
{
while (depth--) *ctx->pfx++ = ' ';
assert(ctx->pfx < &ctx->prefix[ARRAY_SIZE(ctx->prefix)]);
*ctx->pfx = 0;
}
static void ctx_unnest(struct adb_dump_ctx *ctx, unsigned depth)
{
ctx->pfx -= depth;
assert(ctx->pfx >= ctx->prefix);
*ctx->pfx = 0;
}
static void ctx_itemstart(struct adb_dump_ctx *ctx)
{
ctx->pfx[-2] = '-';
}
static void ctx_itemdone(struct adb_dump_ctx *ctx)
{
memset(ctx->prefix, ' ', ctx->pfx - ctx->prefix);
}
static void dump_object(struct adb_dump_ctx *ctx, const struct adb_object_schema *schema, adb_val_t v);
static void dump_adb(struct adb_dump_ctx *ctx);
static void dump_item(struct adb_dump_ctx *ctx, const char *name, const uint8_t *kind, adb_val_t v)
{
struct adb db, *origdb;
struct adb_obj o;
struct adb_object_schema *obj_schema;
char tmp[256];
apk_blob_t b, nl = APK_BLOB_STR("\n");
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;
fprintf(stdout, "%s%s: # %u items\n", ctx->prefix, name, adb_ra_num(&o));
ctx_nest(ctx, 4);
for (size_t i = ADBI_FIRST; i <= adb_ra_num(&o); i++) {
ctx_itemstart(ctx);
dump_item(ctx, NULL, obj_schema->fields[0].kind, adb_ro_val(&o, i));
ctx_itemdone(ctx);
}
ctx_unnest(ctx, 4);
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;
dump_adb(ctx);
ctx->db = origdb;
break;
case ADB_KIND_OBJECT:
if (name) {
fprintf(stdout, "%s%s:\n", ctx->prefix, name);
ctx_nest(ctx, 4);
}
dump_object(ctx, container_of(kind, struct adb_object_schema, kind), v);
if (name) ctx_unnest(ctx, 4);
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)) {
fputs(ctx->prefix, stdout);
if (name) fprintf(stdout, "%s: ", name);
if (b.len >= 60 || apk_blob_chr(b, '\n')) {
/* long or multiline */
apk_blob_t l;
fprintf(stdout, "|\n");
ctx_itemdone(ctx);
ctx_nest(ctx, 4);
while (apk_blob_split(b, nl, &l, &b)) {
fprintf(stdout, "%s"BLOB_FMT"\n",
ctx->prefix, BLOB_PRINTF(l));
}
if (b.len) {
fprintf(stdout, "%s"BLOB_FMT"\n",
ctx->prefix, BLOB_PRINTF(b));
}
ctx_unnest(ctx, 4);
} else {
fwrite(b.ptr, 1, b.len, stdout);
fputc('\n', stdout);
}
}
break;
}
}
static void dump_object(struct adb_dump_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;
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))
fprintf(stdout, "%s"BLOB_FMT"\n", ctx->prefix, BLOB_PRINTF(b));
ctx_itemdone(ctx);
return;
}
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);
ctx_itemdone(ctx);
}
}
}
static const struct adb_db_schema dbschemas[] = {
{ .magic = ADB_SCHEMA_INDEX, .root = &schema_index, },
{ .magic = ADB_SCHEMA_INSTALLED_DB, .root = &schema_idb, },
{ .magic = ADB_SCHEMA_PACKAGE, .root = &schema_package },
};
static void dump_adb(struct adb_dump_ctx *ctx)
{
struct adb_block *blk;
struct adb_sign_hdr *s;
struct adb_verify_ctx vfy = {};
const struct adb_db_schema *ds;
unsigned char *id;
uint32_t schema_magic = ctx->db->hdr.schema;
int r;
for (ds = dbschemas; ds < &dbschemas[ARRAY_SIZE(dbschemas)]; ds++)
if (ds->magic == schema_magic) break;
if (ds >= &dbschemas[ARRAY_SIZE(dbschemas)]) ds = NULL;
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:
fprintf(stdout, "%s# ADB block, size: %d\n", ctx->prefix, ADB_BLOCK_SIZE(blk));
ctx_itemdone(ctx);
ctx->db->adb = b;
if (ds)
dump_object(ctx, ds->root, adb_r_root(ctx->db));
else
fprintf(stdout, "%s# Unrecognized schema: 0x%08x\n", ctx->prefix, schema_magic);
break;
case ADB_BLOCK_SIG:
s = (struct adb_sign_hdr*) b.ptr;
fprintf(stdout, "%s# signature: v%d ", ctx->prefix, s->sign_ver);
ctx_itemdone(ctx);
r = adb_trust_verify_signature(ctx->trust, ctx->db, &vfy, b);
switch (s->sign_ver) {
case 0:
id = (unsigned char*)(s + 1);
for (size_t j = 0; j < 16; j++)
fprintf(stdout, "%02x", id[j]);
break;
default:
break;
}
fprintf(stdout, ": %s\n", r ? apk_error_str(r) : "OK");
break;
default:
fprintf(stdout, "%s# unknown block %d, size: %d\n",
ctx->prefix, ADB_BLOCK_TYPE(blk), ADB_BLOCK_SIZE(blk));
ctx_itemdone(ctx);
}
}
if (IS_ERR(blk)) fprintf(stdout, "%s# block enumeration error: corrupt data area\n", ctx->prefix);
}
static int mmap_and_dump_adb(struct adb_trust *trust, int fd)
{
struct adb db;
struct adb_dump_ctx ctx = {
.db = &db,
.pfx = ctx.prefix,
.trust = trust,
};
int r;
r = adb_m_map(&db, fd, 0, NULL);
if (r) return r;
dump_adb(&ctx);
adb_free(&db);
return 0;
}
static int adbdump_main(void *pctx, struct apk_database *db, struct apk_string_array *args)
{
char **arg;
int r;
foreach_array_item(arg, args) {
r = mmap_and_dump_adb(&db->trust, open(*arg, O_RDONLY));
if (r) {
apk_error("%s: %s", *arg, apk_error_str(r));
return r;
}
}
return 0;
}
static struct apk_applet apk_adbdump = {
.name = "adbdump",
.open_flags = APK_OPENF_READ | APK_OPENF_NO_STATE | APK_OPENF_NO_REPOS,
.main = adbdump_main,
};
APK_DEFINE_APPLET(apk_adbdump);
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