1f9e4847ce
This library will need to mirror AOSP for any changes to installing packages. The library has been separated out in order to make importing updates from AOSP into the TWRP project. twinstall.cpp has been removed from the recovery binary and added to this library. It has been refactored for libziparchive. Sideload has been reworked to use the newer methods from AOSP on flashing packages through adb sideload. We are also removing old libraries for adb and verifier. Lastly before flashing a zip or image, we want to unlock block devices for writing so that when an OTA is flashed to the inactive slot, the flash will succeed. Change-Id: I6d8702fc9031ffaf9f666b4ba375dc7d9362e473
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ASN1_DECODER_H_
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#define ASN1_DECODER_H_
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#include <stddef.h>
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#include <stdint.h>
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class asn1_context {
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public:
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asn1_context(const uint8_t* buffer, size_t length) : p_(buffer), length_(length), app_type_(0) {}
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int asn1_constructed_type() const;
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asn1_context* asn1_constructed_get();
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bool asn1_constructed_skip_all();
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asn1_context* asn1_sequence_get();
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asn1_context* asn1_set_get();
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bool asn1_sequence_next();
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bool asn1_oid_get(const uint8_t** oid, size_t* length);
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bool asn1_octet_string_get(const uint8_t** octet_string, size_t* length);
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private:
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static constexpr int kMaskConstructed = 0xE0;
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static constexpr int kMaskTag = 0x7F;
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static constexpr int kMaskAppType = 0x1F;
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static constexpr int kTagOctetString = 0x04;
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static constexpr int kTagOid = 0x06;
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static constexpr int kTagSequence = 0x30;
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static constexpr int kTagSet = 0x31;
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static constexpr int kTagConstructed = 0xA0;
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int peek_byte() const;
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int get_byte();
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bool skip_bytes(size_t num_skip);
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bool decode_length(size_t* out_len);
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const uint8_t* p_;
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size_t length_;
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int app_type_;
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};
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#endif /* ASN1_DECODER_H_ */
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