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devtools/onion: allow '-' input file so you can pipe from stdin.

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This avoid the requirement to use a temporary file.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2020-03-12 10:26:01 +10:30 committed by Christian Decker
parent 2b2ee87801
commit 43a46e252c
1 changed files with 2 additions and 1 deletions
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3
devtools/onion.c
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@ -145,7 +145,8 @@ static void do_decode(int argc, char **argv, const u8 assocdata[ASSOC_DATA_SIZE]
if (argc != 4)
opt_usage_exit_fail("Expect an filename and privkey with 'decode' method");
char *hextemp = grab_file(ctx, argv[2]);
/* "-" means stdin, which is NULL for grab_file */
char *hextemp = grab_file(ctx, streq(argv[2], "-") ? NULL : argv[2]);
size_t hexlen = strlen(hextemp);
// trim trailing whitespace