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lightningd: add optional ->check callback to struct json_command.

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If this is set, instead of mangling the request in-place, we will hand
it through raw.  Plugins will use this.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2024-04-04 14:06:12 +10:30
parent cf72fb418e
commit 16615f4ed5
2 changed files with 20 additions and 8 deletions
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23
lightningd/jsonrpc.c
View File

@ -1666,7 +1666,7 @@ void jsonrpc_request_end(struct jsonrpc_request *r)
static struct command_result *json_check(struct command *cmd,
const char *buffer,
const jsmntok_t *obj UNNEEDED,
const jsmntok_t *obj,
const jsmntok_t *params)
{
jsmntok_t *mod_params;
@ -1680,22 +1680,29 @@ static struct command_result *json_check(struct command *cmd,
mod_params = json_tok_copy(cmd, params);
}
/* Replaces cmd->json_cmd: */
if (!param(cmd, buffer, mod_params,
p_req("command_to_check", param_command, &name_tok),
p_opt_any(),
NULL))
return command_param_failed();
/* Point name_tok to the name, not the value */
if (params->type == JSMN_OBJECT)
name_tok--;
json_tok_remove(&mod_params, mod_params, name_tok, 1);
cmd->mode = CMD_CHECK;
/* Make *sure* it doesn't try to manip db! */
db_set_readonly(ld->wallet->db, true);
res = cmd->json_cmd->dispatch(cmd, buffer, mod_params, mod_params);
/* Raw check hook is needed for plugins */
if (cmd->json_cmd->check) {
res = cmd->json_cmd->check(cmd, buffer, obj, params);
} else {
/* Point name_tok to the name, not the value */
if (params->type == JSMN_OBJECT)
name_tok--;
json_tok_remove(&mod_params, mod_params, name_tok, 1);
res = cmd->json_cmd->dispatch(cmd, buffer, mod_params, mod_params);
}
db_set_readonly(ld->wallet->db, false);
return res;

5
lightningd/jsonrpc.h
View File

@ -64,6 +64,11 @@ struct json_command {
const char *verbose;
bool dev_only;
const char *depr_start, *depr_end;
/* Special hook if we want raw access for check command */
struct command_result *(*check)(struct command *,
const char *buffer,
const jsmntok_t *obj,
const jsmntok_t *params);
};
struct jsonrpc_notification {