You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

104 lines
2.7 KiB

#ifndef LIGHTNING_COMMON_BOLT11_H
#define LIGHTNING_COMMON_BOLT11_H
#include "short_types.h"
#include "hash_u5.h"
#include "list.h"
#include "node_id.h"
//#include <secp256k1_recovery.h>
/* We only have 10 bits for the field length, meaning < 640 bytes */
#define BOLT11_FIELD_BYTE_LIMIT ((1 << 10) * 5 / 8)
/* BOLT #11:
* * `c` (24): `data_length` variable.
* `min_final_cltv_expiry` to use for the last HTLC in the route.
* Default is 18 if not specified.
*/
#define DEFAULT_FINAL_CLTV_DELTA 18
struct feature_set;
struct bolt11_field {
struct list_node list;
char tag;
u5 *data;
};
/* BOLT #11:
* * `pubkey` (264 bits)
* * `short_channel_id` (64 bits)
* * `fee_base_msat` (32 bits, big-endian)
* * `fee_proportional_millionths` (32 bits, big-endian)
* * `cltv_expiry_delta` (16 bits, big-endian)
*/
/*
struct route_info {
struct node_id pubkey;
u16 cltv_expiry_delta;
struct short_channel_id short_channel_id;
u32 fee_base_msat, fee_proportional_millionths;
};
*/
struct bolt11 {
const struct chainparams *chain;
u64 timestamp;
struct amount_msat *msat; /* NULL if not specified. */
struct sha256 payment_hash;
struct node_id receiver_id;
/* description_hash valid if and only if description is NULL. */
const char *description;
struct sha256 *description_hash;
/* How many seconds to pay from @timestamp above. */
u64 expiry;
/* How many blocks final hop requires. */
u32 min_final_cltv_expiry;
/* If non-NULL, indicates fallback addresses to pay to. */
const u8 **fallbacks;
/* If non-NULL: array of route arrays */
//struct route_info **routes;
/* signature of sha256 of entire thing. */
//secp256k1_ecdsa_signature sig;
/* payment secret, if any. */
//struct secret *payment_secret;
/* Features bitmap, if any. */
u8 *features;
/* Optional metadata to send with payment. */
u8 *metadata;
struct list_head extra_fields;
};
/* Decodes and checks signature; returns NULL on error; description is
* (optional) out-of-band description of payment, for `h` field.
* fset is NULL to accept any features (usually not desirable!).
*
* if @must_be_chain is not NULL, fails unless it's this chain.
*/
struct bolt11 *bolt11_decode(const tal_t *ctx, const char *str, char **fail);
/* Extracts signature but does not check it. */
struct bolt11 *bolt11_decode_nosig(const tal_t *ctx, const char *str, u5 **sigdata, char **fail);
/* Initialize an empty bolt11 struct with optional amount */
struct bolt11 *new_bolt11(const tal_t *ctx);
#if DEVELOPER
/* Flag for tests to suppress `min_final_cltv_expiry` field generation, to match test vectors */
extern bool dev_bolt11_no_c_generation;
#endif
#endif /* LIGHTNING_COMMON_BOLT11_H */