| 31 | } |
| 32 | |
| 33 | static struct command_result *param_amount(struct command *cmd, |
| 34 | const char *name, |
| 35 | const char *buffer, |
| 36 | const jsmntok_t *tok, |
| 37 | struct tlv_offer *offer) |
| 38 | { |
| 39 | const struct iso4217_name_and_divisor *isocode; |
| 40 | jsmntok_t number, whole, frac; |
| 41 | u64 cents; |
| 42 | |
| 43 | if (msat_or_any(buffer, tok, offer)) |
| 44 | return NULL; |
| 45 | |
| 46 | offer->offer_amount = tal(offer, u64); |
| 47 | |
| 48 | /* BOLT #12: |
| 49 | * |
| 50 | * - MUST specify `offer_currency` `iso4217` as an ISO 4217 three-letter code. |
| 51 | * - MUST specify `offer_amount` in the currency unit adjusted by the ISO 4217 |
| 52 | * exponent (e.g. USD cents). |
| 53 | */ |
| 54 | if (tok->end - tok->start < ISO4217_NAMELEN) |
| 55 | return command_fail_badparam(cmd, name, buffer, tok, |
| 56 | "should be 'any', msatoshis or <amount>[.<amount>]<ISO-4217>"); |
| 57 | |
| 58 | isocode = find_iso4217(buffer + tok->end - ISO4217_NAMELEN, ISO4217_NAMELEN); |
| 59 | if (!isocode) |
| 60 | return command_fail(cmd, JSONRPC2_INVALID_PARAMS, |
| 61 | "Unknown currency suffix %.*s", |
| 62 | ISO4217_NAMELEN, |
| 63 | buffer + tok->end - ISO4217_NAMELEN); |
| 64 | |
| 65 | offer->offer_currency |
| 66 | = tal_dup_arr(offer, utf8, isocode->name, ISO4217_NAMELEN, 0); |
| 67 | |
| 68 | number = *tok; |
| 69 | number.end -= ISO4217_NAMELEN; |
| 70 | if (!split_tok(buffer, &number, '.', &whole, &frac)) { |
| 71 | whole = number; |
| 72 | cents = 0; |
| 73 | } else { |
| 74 | if (frac.end - frac.start != isocode->minor_unit) |
| 75 | return command_fail(cmd, JSONRPC2_INVALID_PARAMS, |
| 76 | "Currency %s requires %u minor units", |
| 77 | isocode->name, isocode->minor_unit); |
| 78 | if (!json_to_u64(buffer, &frac, ¢s)) |
| 79 | return command_fail_badparam(cmd, name, buffer, |
| 80 | &number, |
| 81 | "Bad minor units"); |
| 82 | } |
| 83 | |
| 84 | if (!json_to_u64(buffer, &whole, offer->offer_amount)) |
| 85 | return command_fail_badparam(cmd, name, buffer, tok, |
| 86 | "should be 'any', msatoshis or <ISO-4217><amount>[.<amount>]"); |
| 87 | |
| 88 | for (size_t i = 0; i < isocode->minor_unit; i++) { |
| 89 | if (mul_overflows_u64(*offer->offer_amount, 10)) |
| 90 | return command_fail_badparam(cmd, name, buffer, |
nothing calls this directly
no test coverage detected