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traceroute: simpler hexdump()

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function                                             old     new   delta
hexdump                                              270     239     -31

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2020-12-13 15:10:07 +01:00
parent b4b1828076
commit d067acb005
1 changed files with 5 additions and 9 deletions
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14
networking/traceroute.c
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@ -608,7 +608,7 @@ hexdump(const struct icmp *icp, int len)
const unsigned char *p;
int i;
printf("\n%d bytes from %s to %s: icmp type %d (%s) code %d\n",
printf("\n%d bytes from %s to %s: icmp type %u (%s) code %u\n",
len,
auto_string(xmalloc_sockaddr2dotted_noport(&G.from_lsa->u.sa)),
auto_string(xmalloc_sockaddr2dotted_noport(G.to)),
@ -617,13 +617,9 @@ hexdump(const struct icmp *icp, int len)
);
p = (const void *)icp;
for (i = 0; i < len; i++) {
if (i % 16 == 0)
printf("%04x:", i);
if (i % 4 == 0)
bb_putchar(' ');
printf("%02x", p[i]);
if ((i % 16 == 15) && (i + 1 < len))
bb_putchar('\n');
if (!(i & 0xf))
printf("\n%04x:" + (i==0), i);
printf(" %02x", p[i]);
}
bb_putchar('\n');
}
@ -706,7 +702,7 @@ packet4_ok(int read_len, int seq)
}
}
}
if (verbose)
if (verbose) /* testcase: traceroute -vI 127.0.0.1 (sees its own echo requests) */
hexdump(icp, read_len);
return 0;
}