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bc41ab2cb9
Handers of a specific form are both designed to be used as callbacks for param(), and also dispose of the command if something goes wrong. Make them return the 'struct command_result *' from command_failed(), or NULL. Renaming them just makes sense: json_tok_XXX is used for non-command-freeing parsers too. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
160 lines
5.5 KiB
C
160 lines
5.5 KiB
C
/* lightningd/json.h
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* Helpers for outputting JSON results that are specific only for
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* lightningd.
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*/
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#ifndef LIGHTNING_LIGHTNINGD_JSON_H
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#define LIGHTNING_LIGHTNINGD_JSON_H
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#include "config.h"
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#include <ccan/short_types/short_types.h>
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#include <ccan/tal/tal.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#define JSMN_STRICT 1
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# include <external/jsmn/jsmn.h>
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struct bitcoin_txid;
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struct chainparams;
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struct channel_id;
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struct command;
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struct json_escaped;
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struct json_stream;
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struct pubkey;
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struct route_hop;
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struct sha256;
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struct short_channel_id;
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struct wallet_payment;
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struct wallet_tx;
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struct wireaddr;
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struct wireaddr_internal;
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/* Output a route array. */
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void json_add_route(struct json_stream *r, char const *n,
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const struct route_hop *hops, size_t hops_len);
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/* Output the fields of a wallet payment.
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* Should be used within an object context. */
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void json_add_payment_fields(struct json_stream *response,
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const struct wallet_payment *t);
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/* '"fieldname" : "0289abcdef..."' or "0289abcdef..." if fieldname is NULL */
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void json_add_pubkey(struct json_stream *response,
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const char *fieldname,
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const struct pubkey *key);
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/* '"fieldname" : <hexrev>' or "<hexrev>" if fieldname is NULL */
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void json_add_txid(struct json_stream *result, const char *fieldname,
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const struct bitcoin_txid *txid);
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/* Extract a pubkey from this */
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bool json_to_pubkey(const char *buffer, const jsmntok_t *tok,
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struct pubkey *pubkey);
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struct command_result *param_pubkey(struct command *cmd, const char *name,
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const char *buffer, const jsmntok_t *tok,
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struct pubkey **pubkey);
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/* Extract a short_channel_id from this */
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bool json_to_short_channel_id(const char *buffer, const jsmntok_t *tok,
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struct short_channel_id *scid);
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struct command_result *param_short_channel_id(struct command *cmd,
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const char *name,
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const char *buffer,
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const jsmntok_t *tok,
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struct short_channel_id **scid);
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enum feerate_style {
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FEERATE_PER_KSIPA,
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FEERATE_PER_KBYTE
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};
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/* Extract a feerate style. */
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struct command_result *param_feerate_style(struct command *cmd,
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const char *name,
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const char *buffer,
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const jsmntok_t *tok,
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enum feerate_style **style);
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const char *json_feerate_style_name(enum feerate_style style);
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/* Extract a feerate with optional style suffix. */
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struct command_result *param_feerate(struct command *cmd, const char *name,
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const char *buffer, const jsmntok_t *tok,
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u32 **feerate);
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/* '"fieldname" : "1234:5:6"' */
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void json_add_short_channel_id(struct json_stream *response,
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const char *fieldname,
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const struct short_channel_id *id);
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bool json_tok_channel_id(const char *buffer, const jsmntok_t *tok,
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struct channel_id *cid);
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/* JSON serialize a network address for a node */
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void json_add_address(struct json_stream *response, const char *fieldname,
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const struct wireaddr *addr);
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/* JSON serialize a network address for a node. */
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void json_add_address_internal(struct json_stream *response,
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const char *fieldname,
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const struct wireaddr_internal *addr);
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/* '"fieldname" : "value"' or '"value"' if fieldname is NULL. Turns
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* any non-printable chars into JSON escapes, but leaves existing escapes alone.
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*/
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void json_add_string(struct json_stream *result, const char *fieldname, const char *value);
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/* '"fieldname" : "value"' or '"value"' if fieldname is NULL. String must
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* already be JSON escaped as necessary. */
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void json_add_escaped_string(struct json_stream *result,
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const char *fieldname,
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const struct json_escaped *esc TAKES);
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/* '"fieldname" : literal' or 'literal' if fieldname is NULL*/
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void json_add_literal(struct json_stream *result, const char *fieldname,
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const char *literal, int len);
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/* '"fieldname" : value' or 'value' if fieldname is NULL */
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void json_add_double(struct json_stream *result, const char *fieldname,
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double value);
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/* '"fieldname" : value' or 'value' if fieldname is NULL */
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void json_add_num(struct json_stream *result, const char *fieldname,
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unsigned int value);
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/* '"fieldname" : value' or 'value' if fieldname is NULL */
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void json_add_u64(struct json_stream *result, const char *fieldname,
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uint64_t value);
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/* '"fieldname" : true|false' or 'true|false' if fieldname is NULL */
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void json_add_bool(struct json_stream *result, const char *fieldname,
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bool value);
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/* '"fieldname" : "0189abcdef..."' or "0189abcdef..." if fieldname is NULL */
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void json_add_hex(struct json_stream *result, const char *fieldname,
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const void *data, size_t len);
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/* '"fieldname" : "0189abcdef..."' or "0189abcdef..." if fieldname is NULL */
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void json_add_hex_talarr(struct json_stream *result,
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const char *fieldname,
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const tal_t *data);
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enum address_parse_result {
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/* Not recognized as an onchain address */
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ADDRESS_PARSE_UNRECOGNIZED,
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/* Recognized as an onchain address, but targets wrong network */
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ADDRESS_PARSE_WRONG_NETWORK,
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/* Recognized and succeeds */
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ADDRESS_PARSE_SUCCESS,
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};
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/* Return result of address parsing and fills in *scriptpubkey
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* allocated off ctx if ADDRESS_PARSE_SUCCESS
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*/
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enum address_parse_result json_tok_address_scriptpubkey(const tal_t *ctx,
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const struct chainparams *chainparams,
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const char *buffer,
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const jsmntok_t *tok, const u8 **scriptpubkey);
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/* Parse the satoshi token in wallet_tx. */
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struct command_result *param_wtx(struct wallet_tx * tx, const char * buffer,
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const jsmntok_t * sattok, u64 max);
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#endif /* LIGHTNING_LIGHTNINGD_JSON_H */
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