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dig now does reverse IPv6 address lookup.

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This commit is contained in:
Brian Wellington
2000-08-14 20:23:39 +00:00
parent 18940d2cdf
commit 668bd3acee
1 changed files with 47 additions and 10 deletions
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57
bin/dig/dig.c
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@@ -15,16 +15,19 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: dig.c,v 1.86 2000/08/10 15:45:54 bwelling Exp $ */
/* $Id: dig.c,v 1.87 2000/08/14 20:23:39 bwelling Exp $ */
#include <config.h>
#include <stdlib.h>
#include <isc/app.h>
#include <isc/netaddr.h>
#include <isc/string.h>
#include <isc/util.h>
#include <isc/task.h>
#include <dns/byaddr.h>
#include <dns/fixedname.h>
#include <dns/message.h>
#include <dns/name.h>
#include <dns/rdata.h>
@@ -136,6 +139,7 @@ show_usage(void) {
" (Use ixfr=version for type ixfr)\n"
" q-opt is one of:\n"
" -x dot-notation (shortcut for in-addr lookups)\n"
" -n (nibble form for reverse IPv6 lookups)\n"
" -f filename (batch mode)\n"
" -p port (specify port number)\n"
" -t type (specify query type)\n"
@@ -578,6 +582,7 @@ parse_args(isc_boolean_t is_batchfile, isc_boolean_t config_only,
char *homedir;
char rcfile[132];
#endif
isc_boolean_t nibble = ISC_FALSE;
/*
* The semantics for parsing the args is a bit complex; if
@@ -968,19 +973,49 @@ parse_args(isc_boolean_t is_batchfile, isc_boolean_t config_only,
show_usage();
exit(1);
}
n = sscanf(rv[1], "%d.%d.%d.%d", &adrs[0], &adrs[1],
&adrs[2], &adrs[3]);
if (n == 0)
show_usage();
lookup = clone_lookup(default_lookup, ISC_TRUE);
for (i = n - 1; i >= 0; i--) {
snprintf(batchline, MXNAME/8, "%d.",
adrs[i]);
strncat(lookup->textname, batchline, MXNAME);
if (strchr(rv[1], ':') == NULL) {
n = sscanf(rv[1], "%d.%d.%d.%d",
&adrs[0], &adrs[1],
&adrs[2], &adrs[3]);
if (n == 0)
show_usage();
for (i = n - 1; i >= 0; i--) {
snprintf(batchline, MXNAME/8, "%d.",
adrs[i]);
strncat(lookup->textname, batchline,
MXNAME);
}
strncat(lookup->textname, "in-addr.arpa.",
MXNAME);
} else {
isc_netaddr_t addr;
dns_fixedname_t fname;
dns_name_t *name;
isc_buffer_t b;
addr.family = AF_INET6;
n = inet_pton(AF_INET6, rv[1], &addr.type.in6);
if (n <= 0)
show_usage();
dns_fixedname_init(&fname);
name = dns_fixedname_name(&fname);
lookup->nibble = nibble;
result = dns_byaddr_createptrname(&addr,
lookup->nibble,
name);
if (result != ISC_R_SUCCESS)
show_usage();
isc_buffer_init(&b, lookup->textname,
sizeof lookup->textname);
result = dns_name_totext(name, ISC_FALSE, &b);
isc_buffer_putuint8(&b, 0);
if (result != ISC_R_SUCCESS)
show_usage();
}
strncat(lookup->textname, "in-addr.arpa.", MXNAME);
debug("looking up %s", lookup->textname);
lookup->trace_root = ISC_TF(lookup->trace ||
lookup->ns_search_only);
@@ -991,6 +1026,8 @@ parse_args(isc_boolean_t is_batchfile, isc_boolean_t config_only,
ISC_LIST_APPEND(lookup_list, lookup, link);
rv++;
rc--;
} else if ((strncmp(rv[0], "-n", 2) == 0)) {
nibble = ISC_TRUE;
} else {
/*
* Anything which isn't an option