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https://github.com/ElementsProject/lightning.git
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common/bolt12: add calculations for offer periods.
It's not trivial, but fortunately gmtime and mktime exist already. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
Christian Decker
parent
353e4cf3c2
commit
1293852542
115
common/bolt12.c
115
common/bolt12.c
@ -9,6 +9,7 @@
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#include <common/bolt12_merkle.h>
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#include <common/bolt12_merkle.h>
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#include <common/features.h>
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#include <common/features.h>
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#include <secp256k1_schnorrsig.h>
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#include <secp256k1_schnorrsig.h>
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#include <time.h>
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bool bolt12_chains_match(const struct bitcoin_blkid *chains,
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bool bolt12_chains_match(const struct bitcoin_blkid *chains,
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const struct chainparams *must_be_chain)
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const struct chainparams *must_be_chain)
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@ -278,6 +279,120 @@ struct tlv_invoice *invoice_decode_nosig(const tal_t *ctx,
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return invoice;
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return invoice;
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}
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}
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static void add_days(struct tm *tm, u32 number)
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{
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tm->tm_mday += number;
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}
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static void add_months(struct tm *tm, u32 number)
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{
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tm->tm_mon += number;
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}
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static void add_years(struct tm *tm, u32 number)
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{
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tm->tm_year += number;
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}
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static u64 time_change(u64 prevstart, u32 number,
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void (*add_time)(struct tm *tm, u32 number),
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bool day_const)
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{
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struct tm tm;
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time_t prev = prevstart, ret;
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tm = *gmtime(&prev);
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for (;;) {
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struct tm new_tm = tm;
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add_time(&new_tm, number);
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ret = mktime(&new_tm);
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if (ret == (time_t)-1)
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return 0;
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/* If we overflowed that month, try one less. */
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if (!day_const || new_tm.tm_mday == tm.tm_mday)
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break;
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tm.tm_mday--;
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}
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return ret;
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}
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u64 offer_period_start(u64 basetime, size_t n,
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const struct tlv_offer_recurrence *recur)
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{
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/* BOLT-offers #12:
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* 1. A `time_unit` defining 0 (seconds), 1 (days), 2 (months),
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* 3 (years).
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*/
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switch (recur->time_unit) {
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case 0:
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return basetime + recur->period * n;
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case 1:
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return time_change(basetime, recur->period * n, add_days, false);
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case 2:
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return time_change(basetime, recur->period * n, add_months, true);
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case 3:
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return time_change(basetime, recur->period * n, add_years, true);
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default:
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/* This is our offer, how did we get here? */
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return 0;
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}
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}
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void offer_period_paywindow(const struct tlv_offer_recurrence *recurrence,
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const struct tlv_offer_recurrence_paywindow *recurrence_paywindow,
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const struct tlv_offer_recurrence_base *recurrence_base,
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u64 basetime, u64 period_idx,
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u64 *start, u64 *end)
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{
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/* BOLT-offers #12:
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* - if the offer contains `recurrence_paywindow`:
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*/
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if (recurrence_paywindow) {
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u64 pstart = offer_period_start(basetime, period_idx,
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recurrence);
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/* BOLT-offers #12:
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* - if the offer has a `recurrence_basetime` or the
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* `recurrence_counter` is non-zero:
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* - SHOULD NOT send an `invoice_request` for a period prior to
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* `seconds_before` seconds before that period start.
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* - SHOULD NOT send an `invoice_request` for a period later
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* than `seconds_after` seconds past that period start.
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*/
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*start = pstart - recurrence_paywindow->seconds_before;
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*end = pstart + recurrence_paywindow->seconds_after;
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/* First payment without recurrence_base, we give
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* ourselves 60 seconds, since period will start
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* now */
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if (!recurrence_base && period_idx == 0
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&& recurrence_paywindow->seconds_after < 60)
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*end = pstart + 60;
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} else {
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/* BOLT-offers #12:
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* - otherwise:
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* - SHOULD NOT send an `invoice_request` with
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* `recurrence_counter` is non-zero for a period whose
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* immediate predecessor has not yet begun.
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*/
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if (period_idx == 0)
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*start = 0;
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else
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*start = offer_period_start(basetime, period_idx-1,
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recurrence);
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/* BOLT-offers #12:
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* - SHOULD NOT send an `invoice_request` for a period which
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* has already passed.
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*/
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*end = offer_period_start(basetime, period_idx+1,
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recurrence) - 1;
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}
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}
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struct tlv_invoice *invoice_decode(const tal_t *ctx,
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struct tlv_invoice *invoice_decode(const tal_t *ctx,
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const char *b12, size_t b12len,
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const char *b12, size_t b12len,
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const struct feature_set *our_features,
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const struct feature_set *our_features,
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@ -99,4 +99,15 @@ struct tlv_invoice *invoice_decode_nosig(const tal_t *ctx,
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bool bolt12_chains_match(const struct bitcoin_blkid *chains,
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bool bolt12_chains_match(const struct bitcoin_blkid *chains,
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const struct chainparams *must_be_chain);
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const struct chainparams *must_be_chain);
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/* Given a basetime, when does period N start? */
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u64 offer_period_start(u64 basetime, size_t n,
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const struct tlv_offer_recurrence *recurrence);
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/* Get the start and end of the payment window for period N. */
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void offer_period_paywindow(const struct tlv_offer_recurrence *recurrence,
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const struct tlv_offer_recurrence_paywindow *recurrence_paywindow,
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const struct tlv_offer_recurrence_base *recurrence_base,
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u64 basetime, u64 period_idx,
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u64 *period_start, u64 *period_end);
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#endif /* LIGHTNING_COMMON_BOLT12_H */
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#endif /* LIGHTNING_COMMON_BOLT12_H */
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240
common/test/exp-run-bolt12_period.c
Normal file
240
common/test/exp-run-bolt12_period.c
Normal file
@ -0,0 +1,240 @@
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#include "../bolt12.c"
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#include "../json.c"
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#include <assert.h>
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#include <ccan/array_size/array_size.h>
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#include <ccan/tal/grab_file/grab_file.h>
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#include <ccan/tal/path/path.h>
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#include <common/setup.h>
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/* AUTOGENERATED MOCKS START */
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/* Generated stub for amount_asset_is_main */
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bool amount_asset_is_main(struct amount_asset *asset UNNEEDED)
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{ fprintf(stderr, "amount_asset_is_main called!\n"); abort(); }
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/* Generated stub for amount_asset_to_sat */
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struct amount_sat amount_asset_to_sat(struct amount_asset *asset UNNEEDED)
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{ fprintf(stderr, "amount_asset_to_sat called!\n"); abort(); }
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/* Generated stub for amount_sat */
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struct amount_sat amount_sat(u64 satoshis UNNEEDED)
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{ fprintf(stderr, "amount_sat called!\n"); abort(); }
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/* Generated stub for amount_sat_add */
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bool amount_sat_add(struct amount_sat *val UNNEEDED,
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struct amount_sat a UNNEEDED,
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struct amount_sat b UNNEEDED)
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{ fprintf(stderr, "amount_sat_add called!\n"); abort(); }
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/* Generated stub for amount_sat_eq */
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bool amount_sat_eq(struct amount_sat a UNNEEDED, struct amount_sat b UNNEEDED)
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{ fprintf(stderr, "amount_sat_eq called!\n"); abort(); }
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/* Generated stub for amount_sat_greater_eq */
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bool amount_sat_greater_eq(struct amount_sat a UNNEEDED, struct amount_sat b UNNEEDED)
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{ fprintf(stderr, "amount_sat_greater_eq called!\n"); abort(); }
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/* Generated stub for amount_sat_sub */
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bool amount_sat_sub(struct amount_sat *val UNNEEDED,
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struct amount_sat a UNNEEDED,
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struct amount_sat b UNNEEDED)
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{ fprintf(stderr, "amount_sat_sub called!\n"); abort(); }
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/* Generated stub for amount_sat_to_asset */
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struct amount_asset amount_sat_to_asset(struct amount_sat *sat UNNEEDED, const u8 *asset UNNEEDED)
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{ fprintf(stderr, "amount_sat_to_asset called!\n"); abort(); }
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/* Generated stub for amount_tx_fee */
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struct amount_sat amount_tx_fee(u32 fee_per_kw UNNEEDED, size_t weight UNNEEDED)
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{ fprintf(stderr, "amount_tx_fee called!\n"); abort(); }
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/* Generated stub for features_unsupported */
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int features_unsupported(const struct feature_set *our_features UNNEEDED,
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const u8 *their_features UNNEEDED,
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enum feature_place p UNNEEDED)
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{ fprintf(stderr, "features_unsupported called!\n"); abort(); }
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/* Generated stub for from_bech32_charset */
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bool from_bech32_charset(const tal_t *ctx UNNEEDED,
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const char *bech32 UNNEEDED, size_t bech32_len UNNEEDED,
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char **hrp UNNEEDED, u8 **data UNNEEDED)
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{ fprintf(stderr, "from_bech32_charset called!\n"); abort(); }
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/* Generated stub for fromwire */
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const u8 *fromwire(const u8 **cursor UNNEEDED, size_t *max UNNEEDED, void *copy UNNEEDED, size_t n UNNEEDED)
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{ fprintf(stderr, "fromwire called!\n"); abort(); }
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/* Generated stub for fromwire_amount_sat */
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struct amount_sat fromwire_amount_sat(const u8 **cursor UNNEEDED, size_t *max UNNEEDED)
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{ fprintf(stderr, "fromwire_amount_sat called!\n"); abort(); }
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/* Generated stub for fromwire_bool */
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bool fromwire_bool(const u8 **cursor UNNEEDED, size_t *max UNNEEDED)
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{ fprintf(stderr, "fromwire_bool called!\n"); abort(); }
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/* Generated stub for fromwire_fail */
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void *fromwire_fail(const u8 **cursor UNNEEDED, size_t *max UNNEEDED)
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{ fprintf(stderr, "fromwire_fail called!\n"); abort(); }
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/* Generated stub for fromwire_invoice */
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bool fromwire_invoice(const u8 **cursor UNNEEDED, size_t *max UNNEEDED,
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struct tlv_invoice * record UNNEEDED)
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{ fprintf(stderr, "fromwire_invoice called!\n"); abort(); }
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/* Generated stub for fromwire_invoice_request */
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bool fromwire_invoice_request(const u8 **cursor UNNEEDED, size_t *max UNNEEDED,
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struct tlv_invoice_request * record UNNEEDED)
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{ fprintf(stderr, "fromwire_invoice_request called!\n"); abort(); }
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/* Generated stub for fromwire_offer */
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bool fromwire_offer(const u8 **cursor UNNEEDED, size_t *max UNNEEDED,
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struct tlv_offer * record UNNEEDED)
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{ fprintf(stderr, "fromwire_offer called!\n"); abort(); }
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/* Generated stub for fromwire_secp256k1_ecdsa_signature */
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void fromwire_secp256k1_ecdsa_signature(const u8 **cursor UNNEEDED, size_t *max UNNEEDED,
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secp256k1_ecdsa_signature *signature UNNEEDED)
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{ fprintf(stderr, "fromwire_secp256k1_ecdsa_signature called!\n"); abort(); }
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/* Generated stub for fromwire_sha256 */
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void fromwire_sha256(const u8 **cursor UNNEEDED, size_t *max UNNEEDED, struct sha256 *sha256 UNNEEDED)
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{ fprintf(stderr, "fromwire_sha256 called!\n"); abort(); }
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/* Generated stub for fromwire_tal_arrn */
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u8 *fromwire_tal_arrn(const tal_t *ctx UNNEEDED,
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const u8 **cursor UNNEEDED, size_t *max UNNEEDED, size_t num UNNEEDED)
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{ fprintf(stderr, "fromwire_tal_arrn called!\n"); abort(); }
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/* Generated stub for fromwire_u16 */
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u16 fromwire_u16(const u8 **cursor UNNEEDED, size_t *max UNNEEDED)
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{ fprintf(stderr, "fromwire_u16 called!\n"); abort(); }
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/* Generated stub for fromwire_u32 */
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u32 fromwire_u32(const u8 **cursor UNNEEDED, size_t *max UNNEEDED)
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{ fprintf(stderr, "fromwire_u32 called!\n"); abort(); }
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/* Generated stub for fromwire_u64 */
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u64 fromwire_u64(const u8 **cursor UNNEEDED, size_t *max UNNEEDED)
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{ fprintf(stderr, "fromwire_u64 called!\n"); abort(); }
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/* Generated stub for fromwire_u8 */
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u8 fromwire_u8(const u8 **cursor UNNEEDED, size_t *max UNNEEDED)
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{ fprintf(stderr, "fromwire_u8 called!\n"); abort(); }
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/* Generated stub for fromwire_u8_array */
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void fromwire_u8_array(const u8 **cursor UNNEEDED, size_t *max UNNEEDED, u8 *arr UNNEEDED, size_t num UNNEEDED)
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{ fprintf(stderr, "fromwire_u8_array called!\n"); abort(); }
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/* Generated stub for json_add_member */
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void json_add_member(struct json_stream *js UNNEEDED,
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const char *fieldname UNNEEDED,
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bool quote UNNEEDED,
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const char *fmt UNNEEDED, ...)
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{ fprintf(stderr, "json_add_member called!\n"); abort(); }
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/* Generated stub for json_member_direct */
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char *json_member_direct(struct json_stream *js UNNEEDED,
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const char *fieldname UNNEEDED, size_t extra UNNEEDED)
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{ fprintf(stderr, "json_member_direct called!\n"); abort(); }
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/* Generated stub for merkle_tlv */
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void merkle_tlv(const struct tlv_field *fields UNNEEDED, struct sha256 *merkle UNNEEDED)
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{ fprintf(stderr, "merkle_tlv called!\n"); abort(); }
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/* Generated stub for sighash_from_merkle */
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void sighash_from_merkle(const char *messagename UNNEEDED,
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const char *fieldname UNNEEDED,
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const struct sha256 *merkle UNNEEDED,
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struct sha256 *sighash UNNEEDED)
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{ fprintf(stderr, "sighash_from_merkle called!\n"); abort(); }
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/* Generated stub for tlv_invoice_new */
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struct tlv_invoice *tlv_invoice_new(const tal_t *ctx UNNEEDED)
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{ fprintf(stderr, "tlv_invoice_new called!\n"); abort(); }
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/* Generated stub for tlv_invoice_request_new */
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struct tlv_invoice_request *tlv_invoice_request_new(const tal_t *ctx UNNEEDED)
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{ fprintf(stderr, "tlv_invoice_request_new called!\n"); abort(); }
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/* Generated stub for tlv_offer_new */
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struct tlv_offer *tlv_offer_new(const tal_t *ctx UNNEEDED)
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{ fprintf(stderr, "tlv_offer_new called!\n"); abort(); }
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/* Generated stub for to_bech32_charset */
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char *to_bech32_charset(const tal_t *ctx UNNEEDED,
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const char *hrp UNNEEDED, const u8 *data UNNEEDED)
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{ fprintf(stderr, "to_bech32_charset called!\n"); abort(); }
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/* Generated stub for towire */
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void towire(u8 **pptr UNNEEDED, const void *data UNNEEDED, size_t len UNNEEDED)
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{ fprintf(stderr, "towire called!\n"); abort(); }
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/* Generated stub for towire_amount_sat */
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void towire_amount_sat(u8 **pptr UNNEEDED, const struct amount_sat sat UNNEEDED)
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{ fprintf(stderr, "towire_amount_sat called!\n"); abort(); }
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/* Generated stub for towire_bool */
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void towire_bool(u8 **pptr UNNEEDED, bool v UNNEEDED)
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{ fprintf(stderr, "towire_bool called!\n"); abort(); }
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/* Generated stub for towire_invoice */
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void towire_invoice(u8 **pptr UNNEEDED, const struct tlv_invoice *record UNNEEDED)
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{ fprintf(stderr, "towire_invoice called!\n"); abort(); }
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/* Generated stub for towire_invoice_request */
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void towire_invoice_request(u8 **pptr UNNEEDED, const struct tlv_invoice_request *record UNNEEDED)
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{ fprintf(stderr, "towire_invoice_request called!\n"); abort(); }
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/* Generated stub for towire_offer */
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void towire_offer(u8 **pptr UNNEEDED, const struct tlv_offer *record UNNEEDED)
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{ fprintf(stderr, "towire_offer called!\n"); abort(); }
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/* Generated stub for towire_secp256k1_ecdsa_signature */
|
||||||
|
void towire_secp256k1_ecdsa_signature(u8 **pptr UNNEEDED,
|
||||||
|
const secp256k1_ecdsa_signature *signature UNNEEDED)
|
||||||
|
{ fprintf(stderr, "towire_secp256k1_ecdsa_signature called!\n"); abort(); }
|
||||||
|
/* Generated stub for towire_sha256 */
|
||||||
|
void towire_sha256(u8 **pptr UNNEEDED, const struct sha256 *sha256 UNNEEDED)
|
||||||
|
{ fprintf(stderr, "towire_sha256 called!\n"); abort(); }
|
||||||
|
/* Generated stub for towire_u16 */
|
||||||
|
void towire_u16(u8 **pptr UNNEEDED, u16 v UNNEEDED)
|
||||||
|
{ fprintf(stderr, "towire_u16 called!\n"); abort(); }
|
||||||
|
/* Generated stub for towire_u32 */
|
||||||
|
void towire_u32(u8 **pptr UNNEEDED, u32 v UNNEEDED)
|
||||||
|
{ fprintf(stderr, "towire_u32 called!\n"); abort(); }
|
||||||
|
/* Generated stub for towire_u64 */
|
||||||
|
void towire_u64(u8 **pptr UNNEEDED, u64 v UNNEEDED)
|
||||||
|
{ fprintf(stderr, "towire_u64 called!\n"); abort(); }
|
||||||
|
/* Generated stub for towire_u8 */
|
||||||
|
void towire_u8(u8 **pptr UNNEEDED, u8 v UNNEEDED)
|
||||||
|
{ fprintf(stderr, "towire_u8 called!\n"); abort(); }
|
||||||
|
/* Generated stub for towire_u8_array */
|
||||||
|
void towire_u8_array(u8 **pptr UNNEEDED, const u8 *arr UNNEEDED, size_t num UNNEEDED)
|
||||||
|
{ fprintf(stderr, "towire_u8_array called!\n"); abort(); }
|
||||||
|
/* AUTOGENERATED MOCKS END */
|
||||||
|
|
||||||
|
int main(int argc, char *argv[])
|
||||||
|
{
|
||||||
|
char *json;
|
||||||
|
size_t i;
|
||||||
|
jsmn_parser parser;
|
||||||
|
jsmntok_t toks[5000];
|
||||||
|
const jsmntok_t *t;
|
||||||
|
|
||||||
|
common_setup(argv[0]);
|
||||||
|
|
||||||
|
if (argv[1])
|
||||||
|
json = grab_file(tmpctx, argv[1]);
|
||||||
|
else {
|
||||||
|
char *dir = getenv("BOLTDIR");
|
||||||
|
json = grab_file(tmpctx,
|
||||||
|
path_join(tmpctx,
|
||||||
|
dir ? dir : "../lightning-rfc",
|
||||||
|
"bolt12/offer-period-test.json"));
|
||||||
|
if (!json) {
|
||||||
|
printf("test file not found, skipping\n");
|
||||||
|
common_shutdown();
|
||||||
|
exit(0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
jsmn_init(&parser);
|
||||||
|
if (jsmn_parse(&parser, json, strlen(json), toks, ARRAY_SIZE(toks)) < 0)
|
||||||
|
abort();
|
||||||
|
|
||||||
|
/* We deal in UTC; mktime() uses local time */
|
||||||
|
setenv("TZ", "", 1);
|
||||||
|
json_for_each_arr(i, t, toks) {
|
||||||
|
struct tlv_offer_recurrence recurrence;
|
||||||
|
int unit;
|
||||||
|
const jsmntok_t *exp;
|
||||||
|
u64 base, secs, n;
|
||||||
|
time_t time;
|
||||||
|
char *timestring, *tstr, **tparts;
|
||||||
|
|
||||||
|
json_to_u64(json, json_get_member(json, t, "basetime"), &base);
|
||||||
|
json_to_int(json, json_get_member(json, t, "time_unit"), &unit);
|
||||||
|
recurrence.time_unit = unit;
|
||||||
|
json_to_u32(json, json_get_member(json, t, "period"),
|
||||||
|
&recurrence.period);
|
||||||
|
json_to_u64(json, json_get_member(json, t, "n"), &n);
|
||||||
|
exp = json_get_member(json, t, "expect");
|
||||||
|
json_to_u64(json, json_get_member(json, exp, "seconds_since_epoch"),
|
||||||
|
&secs);
|
||||||
|
timestring = json_strdup(tmpctx, json,
|
||||||
|
json_get_member(json, exp, "timestring"));
|
||||||
|
time = secs;
|
||||||
|
/* Form is 'Thu Dec 31 10:00:01 1970\n' */
|
||||||
|
tstr = asctime(gmtime(&time));
|
||||||
|
/* Remove \n */
|
||||||
|
tstr[strlen(tstr)-1] = '\0';
|
||||||
|
tparts = tal_strsplit(tmpctx, tstr, " ", STR_EMPTY_OK);
|
||||||
|
/* Replace day */
|
||||||
|
tparts[0] = "UTC";
|
||||||
|
/* Now each part should appear. */
|
||||||
|
for (size_t i = 0; tparts[i]; i++)
|
||||||
|
assert(strstr(timestring, tparts[i]));
|
||||||
|
assert(offer_period_start(base, n, &recurrence) == secs);
|
||||||
|
}
|
||||||
|
common_shutdown();
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user