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43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/* These functions must be supplied by any binary linking with common/param
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* so it can fail commands. */
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#ifndef LIGHTNING_COMMON_JSON_COMMAND_H
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#define LIGHTNING_COMMON_JSON_COMMAND_H
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#include "config.h"
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#include <ccan/compiler/compiler.h>
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#include <common/json.h>
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#include <common/jsonrpc_errors.h>
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struct command;
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struct command_result;
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/* Caller supplied this: param assumes it can call it. */
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struct command_result *command_fail(struct command *cmd, errcode_t code,
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const char *fmt, ...)
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PRINTF_FMT(3, 4) WARN_UNUSED_RESULT RETURNS_NONNULL;
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/* Convenient wrapper for "paramname: msg: invalid token '.*%s'" */
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static inline struct command_result *
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command_fail_badparam(struct command *cmd,
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const char *paramname,
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const char *buffer,
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const jsmntok_t *tok,
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const char *msg)
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{
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return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
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"%s: %s: invalid token '%.*s'",
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paramname, msg,
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json_tok_full_len(tok),
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json_tok_full(buffer, tok));
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}
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/* Also caller supplied: is this invoked simply to get usage? */
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bool command_usage_only(const struct command *cmd);
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/* If so, this is called. */
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void command_set_usage(struct command *cmd, const char *usage);
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/* Also caller supplied: is this invoked simply to check parameters? */
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bool command_check_only(const struct command *cmd);
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#endif /* LIGHTNING_COMMON_JSON_COMMAND_H */
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