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/* apk_extract.c - Alpine Package Keeper (APK)
*
* Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
* Copyright (C) 2008-2021 Timo Teräs <timo.teras@iki.fi>
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-only
*/
#ifndef APK_EXTRACT
#define APK_EXTRACT
#include "apk_crypto.h"
#include "apk_print.h"
#include "apk_io.h"
struct adb;
struct apk_ctx;
struct apk_extract_ctx;
#define APK_EXTRACTF_NO_CHOWN 0x0001
#define APK_EXTRACTF_NO_OVERWRITE 0x0002
int apk_extract_file(int atfd, const struct apk_file_info *ae,
const char *extract_name, const char *hardlink_name,
struct apk_istream *is,
apk_progress_cb cb, void *cb_ctx, struct apk_digest_ctx *dctx,
unsigned int extract_flags, struct apk_out *out);
struct apk_extract_ops {
int (*v2index)(struct apk_extract_ctx *, apk_blob_t *desc, struct apk_istream *is);
int (*v2meta)(struct apk_extract_ctx *, struct apk_istream *is);
int (*v3index)(struct apk_extract_ctx *, struct adb *);
int (*v3meta)(struct apk_extract_ctx *, struct adb *);
int (*script)(struct apk_extract_ctx *, unsigned int script, size_t size, struct apk_istream *is);
int (*file)(struct apk_extract_ctx *, const struct apk_file_info *fi, struct apk_istream *is);
};
struct apk_extract_ctx {
struct apk_ctx *ac;
const struct apk_extract_ops *ops;
struct apk_checksum *identity;
apk_blob_t desc;
void *pctx;
unsigned generate_identity : 1;
unsigned is_package : 1;
unsigned is_index : 1;
};
static inline void apk_extract_init(struct apk_extract_ctx *ectx, struct apk_ctx *ac, const struct apk_extract_ops *ops) {
*ectx = (struct apk_extract_ctx){.ac = ac, .ops = ops};
}
static inline void apk_extract_reset(struct apk_extract_ctx *ectx) {
apk_extract_init(ectx, ectx->ac, ectx->ops);
}
static inline void apk_extract_generate_identity(struct apk_extract_ctx *ctx, struct apk_checksum *id) {
ctx->identity = id;
ctx->generate_identity = 1;
}
static inline void apk_extract_verify_identity(struct apk_extract_ctx *ctx, struct apk_checksum *id) {
ctx->identity = id;
}
int apk_extract(struct apk_extract_ctx *, struct apk_istream *is);
int apk_extract_v2(struct apk_extract_ctx *, struct apk_istream *is);
void apk_extract_v2_control(struct apk_extract_ctx *, apk_blob_t, apk_blob_t);
int apk_extract_v2_meta(struct apk_extract_ctx *ectx, struct apk_istream *is);
int apk_extract_v3(struct apk_extract_ctx *, struct apk_istream *is);
#endif
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