BOLT #11: * * `p` (1): `data_length` 52. 256-bit SHA256 payment_hash. Preimage of this * provides proof of payment */
| 147 | * provides proof of payment |
| 148 | */ |
| 149 | static void decode_p(struct bolt11 *b11, |
| 150 | struct hash_u5 *hu5, |
| 151 | u5 **data, size_t *data_len, |
| 152 | size_t data_length, bool *have_p) |
| 153 | { |
| 154 | /* BOLT #11: |
| 155 | * |
| 156 | * A payer... SHOULD use the first `p` field that it did NOT |
| 157 | * skip as the payment hash. |
| 158 | */ |
| 159 | if (*have_p) { |
| 160 | unknown_field(b11, hu5, data, data_len, 'p', data_length); |
| 161 | return; |
| 162 | } |
| 163 | |
| 164 | /* BOLT #11: |
| 165 | * |
| 166 | * A reader... MUST skip over unknown fields, OR an `f` field |
| 167 | * with unknown `version`, OR `p`, `h`, `s` or `n` fields that do |
| 168 | * NOT have `data_length`s of 52, 52, 52 or 53, respectively. |
| 169 | */ |
| 170 | if (data_length != 52) { |
| 171 | unknown_field(b11, hu5, data, data_len, 'p', data_length); |
| 172 | return; |
| 173 | } |
| 174 | |
| 175 | pull_bits_certain(hu5, data, data_len, &b11->payment_hash, 256, false); |
| 176 | *have_p = true; |
| 177 | } |
| 178 | |
| 179 | /* BOLT #11: |
| 180 | * |
no test coverage detected