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65be18d355
Things allocated by libwally all get the tal_name "wally_tal", which cost me a few hours trying to find a leak. In the case where we're making one of the allocations the parent of the others (e.g. a wally_psbt), we can do better: supply a name for the tal_wally_end(). So I add a new tal_wally_end_onto() which does the standard tal_steal() trick, and also changes the (typechecked!) name. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
/* Converted to C by Rusty Russell, based on bitcoin source: */
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// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2012 The Bitcoin Developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "config.h"
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#include <bitcoin/address.h>
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#include <bitcoin/base58.h>
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#include <bitcoin/privkey.h>
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#include <bitcoin/pubkey.h>
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#include <bitcoin/shadouble.h>
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#include <common/utils.h>
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#include <wally_core.h>
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static char *to_base58(const tal_t *ctx, u8 version,
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const struct ripemd160 *rmd)
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{
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char *out;
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size_t total_length = sizeof(*rmd) + 1;
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u8 buf[total_length];
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buf[0] = version;
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memcpy(buf + 1, rmd, sizeof(*rmd));
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tal_wally_start();
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if (wally_base58_from_bytes((const unsigned char *) buf,
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total_length, BASE58_FLAG_CHECKSUM, &out)
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!= WALLY_OK)
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out = NULL;
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tal_wally_end_onto(ctx, out, char);
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return out;
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}
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char *bitcoin_to_base58(const tal_t *ctx, const struct chainparams *chainparams,
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const struct bitcoin_address *addr)
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{
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return to_base58(ctx, chainparams->p2pkh_version, &addr->addr);
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}
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char *p2sh_to_base58(const tal_t *ctx, const struct chainparams *chainparams,
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const struct ripemd160 *p2sh)
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{
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return to_base58(ctx, chainparams->p2sh_version, p2sh);
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}
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static bool from_base58(u8 *version,
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struct ripemd160 *rmd,
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const char *base58, size_t base58_len)
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{
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u8 buf[1 + sizeof(*rmd) + 4];
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/* Avoid memcheck complaining if decoding resulted in a short value */
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size_t buflen = sizeof(buf);
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memset(buf, 0, buflen);
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char *terminated_base58 = tal_dup_arr(NULL, char, base58, base58_len, 1);
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terminated_base58[base58_len] = '\0';
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size_t written = 0;
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int r = wally_base58_to_bytes(terminated_base58, BASE58_FLAG_CHECKSUM, buf, buflen, &written);
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tal_free(terminated_base58);
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if (r != WALLY_OK || written > buflen) {
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return false;
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}
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*version = buf[0];
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memcpy(rmd, buf + 1, sizeof(*rmd));
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return true;
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}
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bool ripemd160_from_base58(u8 *version, struct ripemd160 *rmd,
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const char *base58, size_t base58_len)
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{
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return from_base58(version, rmd, base58, base58_len);
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}
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