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/*
* pongoOS - https://checkra.in
*
* Copyright (C) 2021 checkra1n team
*
* This file is part of pongoOS.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <stdbool.h>
#include <stdint.h>
#include "libDER/libDER_config.h"
#include "libDER/asn1Types.h" // This include MUST come after libDER_config.h
#include "libDER/libDER.h"
#include "libDER/DER_Decode.h"
#include "libDER/DER_Encode.h"
#if !DER_MULTIBYTE_TAGS
# error "DER_MULTIBYTE_TAGS not set"
#endif
#if DER_TAG_SIZE != 8
# error "DER_TAG_SIZE != 8"
#endif
// ==================== ==================== ==================== Constants ==================== ==================== ====================
#define ASN1_CONSTR_CONT (ASN1_CONSTRUCTED | ASN1_CONTEXT_SPECIFIC)
#define ASN1_CONSTR_PRIVATE (ASN1_CONSTRUCTED | ASN1_PRIVATE)
// ==================== ==================== ==================== Types ==================== ==================== ====================
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
DERItem content;
DERTag tag;
} Img4Property;
typedef struct {
DERItem magic;
DERItem type;
DERItem version;
DERItem payload;
DERItem keybag;
DERItem compression;
uint8_t hash[0x30];
} Img4Payload;
typedef struct {
DERItem magic;
DERItem zero;
DERItem properties;
DERItem signature;
DERItem certificates;
DERItem embedded;
uint8_t full_hash[0x30];
uint8_t prop_hash[0x30];
} Img4Manifest;
typedef struct {
DERItem magic;
DERItem nonce;
} Img4RestoreInfo;
typedef struct {
bool payloadHashValid;
bool manifestHashValid;
DERItem payloadRaw;
DERItem manifestRaw;
DERItem manb;
DERItem manp;
DERItem objp;
Img4Payload payload;
Img4Manifest manifest;
Img4RestoreInfo restoreInfo;
} Img4;
// ==================== ==================== ==================== Functions ==================== ==================== ====================
DERReturn DERImg4DecodeFindInSequence(DERByte *nextItem, DERByte *end, DERTag tag, DERItem *out);
DERReturn DERImg4DecodeContentFindItemWithTag(const DERItem *der, DERTag tag, DERItem *out);
DERReturn DERImg4DecodeTagCompare(const DERItem *der, uint32_t name);
DERReturn DERImg4Decode(const DERItem *der, DERItem *items);
DERReturn DERImg4DecodePayload(const DERItem *der, Img4Payload *payload);
DERReturn DERImg4DecodeManifest(const DERItem *der, Img4Manifest *manifest);
DERReturn DERImg4DecodeRestoreInfo(const DERItem *der, Img4RestoreInfo *restoreInfo);
DERReturn DERImg4DecodeFindProperty(const DERItem *der, DERTag ktag, DERTag vtag, Img4Property *prop);
DERReturn Img4DecodeGetPayload(const Img4 *img4, DERItem *item);
DERReturn Img4DecodeGetPayloadType(const Img4 *img4, uint32_t *type);
DERReturn Img4DecodeGetPayloadKeybag(const Img4 *img4, DERItem *kbag);
DERReturn Img4DecodeInit(const DERByte *data, DERSize length, Img4 *img4);
DERReturn Img4Encode(DERItem *der, const DERItem *items);
DERReturn Img4EncodeRestoreInfo(DERItem *der, void *bytes, size_t len);
DERReturn
Img4EncodeSequence(DERTag tag, const void *src, DERShort numItems, const DERItemSpec *itemSpecs, DERItem *der);
#ifdef __cplusplus
}
#endif
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