Update disassembler.c to display wildcard matches
This commit modifies disassembler.c to print an asterisk (*) when
encountering a value of 0xff, indicating a wildcard match. This
enhancement improves the clarity of the disassembled output, making it
easier to identify wildcard rules.
Example:
2265: jdnsqeq r0, 2377, 12, (*)(4)_SUB(12)_TESTSUBTYPE(4)_TCP(5)LOCAL(0)(0)
Test: TH
Change-Id: I9ccaa17ebc4fe0bd8d46249b8d6584804bc99aa7
diff --git a/disassembler.c b/disassembler.c
index 7cc4642..e201b49 100644
--- a/disassembler.c
+++ b/disassembler.c
@@ -353,10 +353,13 @@
}
while (*ptr2pc < end) {
uint8_t byte = program[(*ptr2pc)++];
+ // value == 0xff is a wildcard that consumes the whole label.
// values < 0x40 could be lengths, but - and 0..9 are in practice usually
// too long to be lengths so print them as characters. All other chars < 0x40
// are not valid in dns character.
- if (byte == '-' || (byte >= '0' && byte <= '9') || byte >= 0x40) {
+ if (byte == 0xff) {
+ bprintf("(*)");
+ } else if (byte == '-' || (byte >= '0' && byte <= '9') || byte >= 0x40) {
bprintf("%c", byte);
} else {
bprintf("(%d)", byte);
