| 1070 | } |
| 1071 | |
| 1072 | static void maybe_encode_9(u5 **data, const u8 *features, |
| 1073 | bool have_payment_metadata) |
| 1074 | { |
| 1075 | u5 *f5 = tal_arr(NULL, u5, 0); |
| 1076 | |
| 1077 | for (size_t i = 0; i < tal_count(features) * CHAR_BIT; i++) { |
| 1078 | if (!feature_is_set(features, i)) |
| 1079 | continue; |
| 1080 | |
| 1081 | /* Don't set option_payment_metadata unless we acually use it */ |
| 1082 | if (!have_payment_metadata |
| 1083 | && COMPULSORY_FEATURE(i) == OPT_PAYMENT_METADATA) |
| 1084 | continue; |
| 1085 | |
| 1086 | /* We expand it out so it makes a BE 5-bit/btye bitfield */ |
| 1087 | set_feature_bit(&f5, (i / 5) * 8 + (i % 5)); |
| 1088 | } |
| 1089 | |
| 1090 | /* BOLT #11: |
| 1091 | * |
| 1092 | * - if `9` contains non-zero bits: |
| 1093 | * - SHOULD use the minimum `data_length` possible. |
| 1094 | * - otherwise: |
| 1095 | * - MUST omit the `9` field altogether. |
| 1096 | */ |
| 1097 | if (tal_count(f5) != 0) { |
| 1098 | push_field_type_and_len(data, '9', tal_count(f5) * 5); |
| 1099 | tal_expand(data, f5, tal_count(f5)); |
| 1100 | } |
| 1101 | tal_free(f5); |
| 1102 | } |
| 1103 | |
| 1104 | static bool encode_extra(u5 **data, const struct bolt11_field *extra) |
| 1105 | { |
no test coverage detected