mirror of
https://github.com/oxen-io/oxen-core.git
synced 2023-12-14 02:22:56 +01:00
e3a6f20f85
- constexpr functions in common/loki.h for inlining - move hex functions out from common/loki.h to common/hex.h - use and apply prev_txid on LNS TX's to all LNS types (for updating in the future) - add lns burn type, for custom burn amounts - accept and validate lokinet addresses via base32z - return lokinet addresses in RPC LNS calls via base32z - updated Messenger references to Session - update documentation to note that only Session LNS entries are allowed currently - remove raw c-string interface from LNS db - update multi-SQL queries into single SQL queries - remove tx estimation backlog in anticipation for 2 priorities only, blink + unimportant
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
#include "base32z.h"
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#include "crypto/crypto.h"
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#include <unordered_map>
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namespace base32z
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{
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static const std::unordered_map<char, uint8_t> zbase32_reverse_alpha = {
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{'y', 0}, {'b', 1}, {'n', 2}, {'d', 3}, {'r', 4}, {'f', 5}, {'g', 6}, {'8', 7},
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{'e', 8}, {'j', 9}, {'k', 10}, {'m', 11}, {'c', 12}, {'p', 13}, {'q', 14}, {'x', 15},
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{'o', 16}, {'t', 17}, {'1', 18}, {'u', 19}, {'w', 20}, {'i', 21}, {'s', 22}, {'z', 23},
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{'a', 24}, {'3', 25}, {'4', 26}, {'5', 27}, {'h', 28}, {'7', 29}, {'6', 30}, {'9', 31}};
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static size_t decode_size(size_t sz)
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{
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auto d = div(sz, 5);
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if (d.rem) d.quot++;
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return 8 * d.quot;
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}
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bool decode(std::string const &src, crypto::ed25519_public_key &dest)
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{
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int tmp = 0, bits = 0;
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size_t idx = 0;
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const size_t len = decode_size(sizeof(dest));
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const size_t out_len = sizeof(dest);
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for (size_t i = 0; i < len; i++)
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{
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char ch = src[i];
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if (ch)
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{
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auto itr = zbase32_reverse_alpha.find(ch);
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if (itr == zbase32_reverse_alpha.end()) return false;
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ch = itr->second;
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}
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else
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{
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return idx == out_len;
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}
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tmp |= ch;
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bits += 5;
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if (bits >= 8)
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{
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if (idx >= out_len) return false;
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dest.data[idx] = tmp >> (bits - 8);
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bits -= 8;
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idx++;
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}
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tmp <<= 5;
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}
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return idx == out_len;
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}
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}
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