74 lines
2.9 KiB
C++
74 lines
2.9 KiB
C++
// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
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// source code may only be used and distributed under the Widevine License
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// Agreement.
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#ifndef WVCDM_UTIL_STRING_CONVERSIONS_H_
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#define WVCDM_UTIL_STRING_CONVERSIONS_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <string>
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#include <vector>
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#include "util_common.h"
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namespace wvutil {
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// ASCII hex to Binary conversion.
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std::vector<uint8_t> a2b_hex(const std::string& b);
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std::vector<uint8_t> a2b_hex(const std::string& label,
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const std::string& b);
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std::string a2bs_hex(const std::string& b);
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// Binary to ASCII hex conversion. The default versions limit output to 2k to
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// protect us from log spam. The unlimited version has no length limit.
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std::string b2a_hex(const std::vector<uint8_t>& b);
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std::string unlimited_b2a_hex(const std::vector<uint8_t>& b);
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std::string b2a_hex(const std::string& b);
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std::string unlimited_b2a_hex(const std::string& b);
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std::string HexEncode(const uint8_t* bytes, size_t size);
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std::string UnlimitedHexEncode(const uint8_t* bytes, size_t size);
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// Base64 encoding/decoding.
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// Converts binary data into the ASCII Base64 character set and vice
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// versa using the encoding rules defined in RFC4648 section 4.
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std::string Base64Encode(const std::vector<uint8_t>& bin_input);
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std::string Base64Encode(const std::string& bin_input);
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std::vector<uint8_t> Base64Decode(const std::string& bin_input);
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// URL-Safe Base64 encoding/decoding.
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// Converts binary data into the URL/Filename safe ASCII Base64
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// character set and vice versa using the encoding rules defined in
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// RFC4648 section 5.
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std::string Base64SafeEncode(const std::vector<uint8_t>& bin_input);
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std::string Base64SafeEncode(const std::string& bin_input);
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std::vector<uint8_t> Base64SafeDecode(const std::string& bin_input);
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// URL-Safe Base64 encoding without padding.
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// Similar to Base64SafeEncode(), without any padding character '='
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// at the end.
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std::string Base64SafeEncodeNoPad(const std::vector<uint8_t>& bin_input);
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std::string Base64SafeEncodeNoPad(const std::string& bin_input);
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// Host to Network/Network to Host conversion.
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int64_t htonll64(int64_t x);
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inline int64_t ntohll64(int64_t x) { return htonll64(x); }
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// Encode unsigned integer into a big endian formatted string.
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std::string EncodeUint32(uint32_t u);
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// Converts a byte string representing an ID into a log-friendly form.
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//
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// Conversion rules:
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// 1) empty - returns <empty>
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// 2) printable ASCII only - original content, surrounded by double
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// quotes; double quotes and backslashes
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// are escaped, like C/C++ string literals.
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// 3) otherwise - Unquoted, hexadecimal encoded string.
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//
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// Intended to be used on ID strings which are provided/generated
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// from sources outside of the CDM.
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std::string SafeByteIdToString(const std::string& id);
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std::string SafeByteIdToString(const std::vector<uint8_t>& id);
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} // namespace wvutil
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#endif // WVCDM_UTIL_STRING_CONVERSIONS_H_
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