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res_query_dump: added comment with printable symbols

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This commit is contained in:
Dmitry Podgorny
2016-04-13 12:38:53 +00:00
parent e60895087e
commit 3aafeef215
1 changed files with 36 additions and 2 deletions
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38
tests/res_query_dump.c
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@@ -1,14 +1,41 @@
/* Simple program to dump res_query(3) response. */
/* res_query_dump.c
* Simple program to dump res_query(3) response
*
* Copyright (C) 2014 Dmitry Podgorny <pasis.ua@gmail.com>
*
* This software is provided AS-IS with no warranty, either express
* or implied.
*
* This program is dual licensed under the MIT and GPLv3 licenses.
*/
/* Linux and OSX:
* gcc -o res_query_dump tests/res_query_dump.c -lresolv
* *BSD:
* gcc -o res_query_dump tests/res_query_dump.c
* QNX:
* gcc -o res_query_dump tests/res_query_dump.c -lsocket
* Solaris:
* gcc -o res_query_dump tests/res_query_dump.c -lresolv -lsocket -lnsl
*/
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#define STEP 8
#ifndef T_SRV
#define T_SRV 33
#endif /* T_SRV */
#ifndef C_IN
#define C_IN 1
#endif /* C_IN */
#define STEP 10
int main(int argc, char **argv)
{
@@ -47,6 +74,13 @@ int main(int argc, char **argv)
for (j = i; j < len && j < i + STEP; ++j) {
printf(" 0x%02x,", buf[j]);
}
for (j = len; j < i + STEP; ++j) {
printf(" ");
}
printf(" // ");
for (j = i; j < len && j < i + STEP; ++j) {
printf("%c", isprint(buf[j]) ? buf[j] : '.');
}
printf("\n");
}
printf("};\n");