Function encode_pubkey_to_addr

wallet/walletrpc.c:21–86

May return NULL if encoding error occurs. */

/* May return NULL if encoding error occurs. */
static char *
encode_pubkey_to_addr(const tal_t *ctx,
		      const struct pubkey *pubkey,
		      enum addrtype addrtype,
		      /* Output: redeemscript to use to redeem outputs
		       * paying to the address.
		       * May be NULL if redeemscript is do not care. */
		      u8 **out_redeemscript)
{
	char *out;
	const char *hrp;
	struct ripemd160 h160;
	u8 *redeemscript;
	bool ok;

	switch (addrtype) {
	case ADDR_BECH32:
		hrp = chainparams->onchain_hrp;

		/* out buffer is 73 + strlen(human readable part),
		 * see common/bech32.h*/
		out = tal_arr(ctx, char, 73 + strlen(hrp));
		pubkey_to_hash160(pubkey, &h160);
		/* I am uncertain why this is so for direct SegWit
		 * outputs, but this is how listaddrs worked prior to
		 * this code being refactored. */
		redeemscript = tal_dup_arr(ctx, u8,
					   (u8 *) &h160, sizeof(h160),
					   0);

		ok = segwit_addr_encode(out, hrp, 0, h160.u.u8, sizeof(h160));
		goto done;

	case ADDR_P2TR: {
		u8 *p2tr_spk = scriptpubkey_p2tr(ctx, pubkey);
		u8 *x_key = p2tr_spk + 2;
		hrp = chainparams->onchain_hrp;

		redeemscript = NULL;

		/* out buffer is 73 + strlen(human readable part),
		 * see common/bech32.h*/
		out = tal_arr(ctx, char, 73 + strlen(hrp));

		ok = segwit_addr_encode(out, hrp, /* witver */ 1, x_key, 32);
		goto done;
	}

	case ADDR_P2SH_SEGWIT:
	case ADDR_ALL:
		abort();
	}
	abort();


done:
	if (!ok)
		out = tal_free(out);