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devtools/decodemsg: handle truncated TLVs properly.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2020-11-10 14:08:22 +10:30
committed by neil saitug
parent 50f8da85ac
commit 9f5f9e15d0
1 changed files with 6 additions and 1 deletions
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7
devtools/print_wire.c
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@@ -187,6 +187,11 @@ void printwire_tlvs(const char *fieldname, const u8 **cursor, size_t *plen,
if (!*cursor)
goto fail;
if (length > *plen) {
*plen = 0;
goto fail;
}
ptype = find_print_record_type(type, types, num_types);
if (ptype) {
size_t tlvlen = length;
@@ -195,9 +200,9 @@ void printwire_tlvs(const char *fieldname, const u8 **cursor, size_t *plen,
if (!*cursor)
goto fail;
printf("}\n");
*plen -= length;
} else
printf("**TYPE #%"PRIu64" UNKNOWN for TLV %s**\n", type, fieldname);
*plen -= length;
}
return;