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check_dns: allow returned addresses to be in any order

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This commit is contained in:
Rolf Eike Beer 2018-07-25 20:18:47 +02:00
parent e60c6c04f0
commit a03068743f
3 changed files with 11 additions and 5 deletions
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1
NEWS
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@ -5,6 +5,7 @@ This file documents the major additions and syntax changes between releases.
check_dns: allow 'expected address' (-a) to be specified in CIDR notation
(IPv4 only).
check_dns: allow for IPv6 RDNS
check_dns: allow unsorted addresses
check_apt: add --only-critical switch
check_apt: add -l/--list option to print packages

1
THANKS.in
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@ -356,3 +356,4 @@ Sven Geggus
Thomas Kurschel
Yannick Charton
Nicolai Søborg
Rolf Eike Beer

14
plugins/check_dns.c
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@ -230,10 +230,15 @@ main (int argc, char **argv)
temp_buffer = "";
for (i=0; i<expected_address_cnt; i++) {
int j;
/* check if we get a match on 'raw' ip or cidr */
if ( strcmp(address, expected_address[i]) == 0
|| ip_match_cidr(address, expected_address[i]) )
result = STATE_OK;
for (j=0; j<n_addresses; j++) {
if ( strcmp(addresses[j], expected_address[i]) == 0
|| ip_match_cidr(addresses[j], expected_address[i]) ) {
result = STATE_OK;
break;
}
}
/* prepare an error string */
xasprintf(&temp_buffer, "%s%s; ", temp_buffer, expected_address[i]);
@ -530,8 +535,7 @@ print_help (void)
printf (" -a, --expected-address=IP-ADDRESS|CIDR|HOST\n");
printf (" %s\n", _("Optional IP-ADDRESS/CIDR you expect the DNS server to return. HOST must end"));
printf (" %s\n", _("with a dot (.). This option can be repeated multiple times (Returns OK if any"));
printf (" %s\n", _("value match). If multiple addresses are returned at once, you have to match"));
printf (" %s\n", _("the whole string of addresses separated with commas (sorted alphabetically)."));
printf (" %s\n", _("value matches)."));
printf (" -A, --expect-authority\n");
printf (" %s\n", _("Optionally expect the DNS server to be authoritative for the lookup"));
printf (" -w, --warning=seconds\n");