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devtools/decodemsg: add --onion option for decoding onion errors.

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This requires a tweak to generate-wire.py too, since it always called the
top-level routine 'print_message'.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2018-07-27 06:50:37 +09:30
committed by Christian Decker
parent ef33dd2998
commit 93cf28553d
3 changed files with 29 additions and 14 deletions
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11
devtools/Makefile
View File

@@ -1,4 +1,4 @@
DEVTOOLS_SRC := devtools/gen_print_wire.c devtools/print_wire.c
DEVTOOLS_SRC := devtools/gen_print_wire.c devtools/gen_print_onion_wire.c devtools/print_wire.c
DEVTOOLS_OBJS := $(DEVTOOLS_SRC:.c=.o)
DEVTOOLS_TOOL_SRC := devtools/bolt11-cli.c devtools/decodemsg.c devtools/onion.c
DEVTOOLS_TOOL_OBJS := $(DEVTOOLS_TOOL_SRC:.c=.o)
@@ -23,6 +23,12 @@ devtools/gen_print_wire.h: $(WIRE_GEN) wire/gen_peer_wire_csv
devtools/gen_print_wire.c: $(WIRE_GEN) wire/gen_peer_wire_csv
$(WIRE_GEN) --bolt --printwire ${@:.c=.h} wire_type < wire/gen_peer_wire_csv > $@
devtools/gen_print_onion_wire.h: $(WIRE_GEN) wire/gen_onion_wire_csv
$(WIRE_GEN) --bolt --printwire --header $@ onion_type < wire/gen_onion_wire_csv > $@
devtools/gen_print_onion_wire.c: $(WIRE_GEN) wire/gen_onion_wire_csv
$(WIRE_GEN) --bolt --printwire ${@:.c=.h} onion_type < wire/gen_onion_wire_csv > $@
devtools/bolt11-cli: $(DEVTOOLS_OBJS) $(DEVTOOLS_COMMON_OBJS) $(JSMN_OBJS) $(CCAN_OBJS) $(BITCOIN_OBJS) wire/fromwire.o wire/towire.o devtools/bolt11-cli.o
devtools/decodemsg: $(DEVTOOLS_OBJS) $(DEVTOOLS_COMMON_OBJS) $(JSMN_OBJS) $(CCAN_OBJS) $(BITCOIN_OBJS) wire/fromwire.o wire/towire.o devtools/decodemsg.o
@@ -31,8 +37,9 @@ devtools/onion.c: ccan/config.h
devtools/onion: $(DEVTOOLS_OBJS) $(DEVTOOLS_COMMON_OBJS) $(JSMN_OBJS) $(CCAN_OBJS) $(BITCOIN_OBJS) wire/fromwire.o wire/towire.o devtools/onion.o common/sphinx.o
$(DEVTOOLS_OBJS) $(DEVTOOLS_TOOL_OBJS): wire/wire.h devtools/gen_print_wire.h
$(DEVTOOLS_OBJS) $(DEVTOOLS_TOOL_OBJS): wire/wire.h devtools/gen_print_wire.h devtools/gen_print_onion_wire.h
devtools/gen_print_wire.o: devtools/gen_print_wire.h wire/gen_peer_wire.h devtools/print_wire.h
devtools/gen_print_onion_wire.o: devtools/gen_print_onion_wire.h devtools/print_wire.h
# Make sure these depend on everything.
ALL_PROGRAMS += devtools/bolt11-cli devtools/decodemsg devtools/onion

28
devtools/decodemsg.c
View File

@@ -1,28 +1,36 @@
#include <ccan/err/err.h>
#include <ccan/opt/opt.h>
#include <common/decode_short_channel_ids.h>
#include <common/utils.h>
#include <devtools/gen_print_onion_wire.h>
#include <devtools/gen_print_wire.h>
#include <stdio.h>
static void usage(void)
{
fprintf(stderr, "Usage: decodemsg <msg-in-hex>\n");
exit(1);
}
int main(int argc, char *argv[])
{
const u8 *m;
bool onion = false;
setup_locale();
if (argc != 2)
usage();
opt_register_noarg("--onion", opt_set_bool, &onion,
"Decode an error message instead of a peer message");
opt_register_noarg("--help|-h", opt_usage_and_exit,
"<hexmsg>"
"Decode a lightning spec wire message from hex.",
"Print this message.");
/* Last arg is hex string */
opt_parse(&argc, argv, opt_log_stderr_exit);
if (argc != 2)
errx(1, "Need a hex message");
/* Arg is hex string */
m = tal_hexdata(NULL, argv[1], strlen(argv[1]));
if (!m)
errx(1, "'%s' is not valid hex", argv[1]);
print_message(m);
if (onion)
printonion_type_message(m);
else
printwire_type_message(m);
return 0;
}

4
tools/generate-wire.py
View File

@@ -718,7 +718,7 @@ print_header_template = """/* This file was generated by generate-wire.py */
#include <devtools/print_wire.h>
{includes}
void print_message(const u8 *msg);
void print{enumname}_message(const u8 *msg);
{func_decls}
#endif /* LIGHTNING_{idem} */
@@ -732,7 +732,7 @@ print_template = """/* This file was generated by generate-wire.py */
#include <common/utils.h>
#include <stdio.h>
void print_message(const u8 *msg)
void print{enumname}_message(const u8 *msg)
{{
\tswitch ((enum {enumname})fromwire_peektype(msg)) {{
\t{printcases}