/* packet-dns.c
* Routines for DNS packet disassembly
*
- * $Id: packet-dns.c,v 1.15 1999/01/28 21:29:35 gram Exp $
+ * $Id: packet-dns.c,v 1.16 1999/03/22 23:31:05 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.org>
/* type values */
#define T_A 1 /* host address */
-#define T_NS 2 /* authoritative server */
+#define T_NS 2 /* authoritative name server */
+#define T_MD 3 /* mail destination (obsolete) */
+#define T_MF 4 /* mail forwarder (obsolete) */
#define T_CNAME 5 /* canonical name */
#define T_SOA 6 /* start of authority zone */
+#define T_MB 7 /* mailbox domain name (experimental) */
+#define T_MG 8 /* mail group member (experimental) */
+#define T_MR 9 /* mail rename domain name (experimental) */
+#define T_NULL 10 /* null RR (experimental) */
#define T_WKS 11 /* well known service */
#define T_PTR 12 /* domain name pointer */
#define T_HINFO 13 /* host information */
+#define T_MINFO 14 /* mailbox or mail list information */
#define T_MX 15 /* mail routing information */
#define T_TXT 16 /* text strings */
-#define T_AAAA 28 /* IP6 Address */
+#define T_RP 17 /* responsible person (RFC 1183) */
+#define T_AFSDB 18 /* AFS data base location (RFC 1183) */
+#define T_X25 19 /* X.25 address (RFC 1183) */
+#define T_ISDN 20 /* ISDN address (RFC 1183) */
+#define T_RT 21 /* route-through (RFC 1183) */
+#define T_NSAP 22 /* OSI NSAP (RFC 1706) */
+#define T_NSAP_PTR 23 /* PTR equivalent for OSI NSAP (RFC 1348 - obsolete) */
+#define T_SIG 24 /* digital signature (RFC 2065) */
+#define T_KEY 25 /* public key (RFC 2065) */
+#define T_PX 26 /* pointer to X.400/RFC822 mapping info (RFC 1664) */
+#define T_GPOS 27 /* geographical position (RFC 1712) */
+#define T_AAAA 28 /* IPv6 address (RFC 1886) */
+#define T_LOC 29 /* geographical location (RFC 1876) */
+#define T_NXT 30 /* "next" name (RFC 2065) */
+#define T_EID 31 /* ??? (Nimrod?) */
+#define T_NIMLOC 32 /* ??? (Nimrod?) */
+#define T_SRV 33 /* service location (RFC 2052) */
+#define T_ATMA 34 /* ??? */
+#define T_NAPTR 35 /* naming authority pointer (RFC 2168) */
/* Bit fields in the flags */
#define F_RESPONSE (1<<15) /* packet is response */
#define RCODE_NOTIMPL (4<<0)
#define RCODE_REFUSED (5<<0)
+/* See RFC 1035 for all RR types for which no RFC is listed. */
static char *
dns_type_name (int type)
{
char *type_names[36] = {
- "unused", "A", "NS", "MD", "MF", "CNAME", "SOA", "MB", "MG", "MR",
- "NULL", "WKS", "PTR", "HINFO", "MINFO", "MX", "TXT", "RP", "AFSDB",
- "X25", "ISDN", "RT", "NSAP", "NSAP_PTR", "SIG", "KEY", "PX", "GPOS",
- "AAAA", "LOC", "NXT", "EID", "NIMLOC", "SRV", "ATMA", "NAPTR"
+ "unused",
+ "A",
+ "NS",
+ "MD",
+ "MF",
+ "CNAME",
+ "SOA",
+ "MB",
+ "MG",
+ "MR",
+ "NULL",
+ "WKS",
+ "PTR",
+ "HINFO",
+ "MINFO",
+ "MX",
+ "TXT",
+ "RP", /* RFC 1183 */
+ "AFSDB", /* RFC 1183 */
+ "X25", /* RFC 1183 */
+ "ISDN", /* RFC 1183 */
+ "RT", /* RFC 1183 */
+ "NSAP", /* RFC 1706 */
+ "NSAP-PTR", /* RFC 1348 */
+ "SIG", /* RFC 2065 */
+ "KEY", /* RFC 2065 */
+ "PX", /* RFC 1664 */
+ "GPOS", /* RFC 1712 */
+ "AAAA", /* RFC 1886 */
+ "LOC", /* RFC 1876 */
+ "NXT", /* RFC 2065 */
+ "EID",
+ "NIMLOC",
+ "SRV", /* RFC 2052 */
+ "ATMA",
+ "NAPTR" /* RFC 2168 */
};
if (type <= 35)
/* queries */
case 251:
- return "IXFR";
+ return "IXFR"; /* RFC 1995 */
case 252:
return "AXFR";
case 253:
}
+static char *
+dns_long_type_name (int type)
+{
+ char *type_names[36] = {
+ "unused",
+ "Host address",
+ "Authoritative name server",
+ "Mail destination",
+ "Mail forwarder",
+ "Canonical name for an alias",
+ "Start of zone of authority",
+ "Mailbox domain name",
+ "Mail group member",
+ "Mail rename domain name",
+ "Null resource record",
+ "Well-known service description",
+ "Domain name pointer",
+ "Host information",
+ "Mailbox or mail list information",
+ "Mail exchange",
+ "Text strings",
+ "Responsible person", /* RFC 1183 */
+ "AFS data base location", /* RFC 1183 */
+ "X.25 address", /* RFC 1183 */
+ "ISDN number", /* RFC 1183 */
+ "Route through", /* RFC 1183 */
+ "OSI NSAP", /* RFC 1706 */
+ "OSI NSAP name pointer", /* RFC 1348 */
+ "Signature", /* RFC 2065 */
+ "Public key", /* RFC 2065 */
+ "Pointer to X.400/RFC822 mapping info", /* RFC 1664 */
+ "Geographical position", /* RFC 1712 */
+ "IPv6 address", /* RFC 1886 */
+ "Location", /* RFC 1876 */
+ "Next", /* RFC 2065 */
+ "EID",
+ "NIMLOC",
+ "Service location", /* RFC 2052 */
+ "ATMA",
+ "Naming authority pointer" /* RFC 2168 */
+ };
+ static char unkbuf[7+1+2+1+4+1+1+10+1+1]; /* "Unknown RR type (%d)" */
+
+ if (type <= 35)
+ return type_names[type];
+
+ /* special cases */
+ switch (type)
+ {
+ /* non standard */
+ case 100:
+ return "UINFO";
+ case 101:
+ return "UID";
+ case 102:
+ return "GID";
+ case 103:
+ return "UNSPEC";
+
+ /* queries */
+ case 251:
+ return "Request for incremental zone transfer"; /* RFC 1995 */
+ case 252:
+ return "Request for full zone transfer";
+ case 253:
+ return "Request for mailbox-related records";
+ case 254:
+ return "Request for mail agent resource records";
+ case 255:
+ return "Request for all records";
+ }
+
+ sprintf(unkbuf, "Unknown RR type (%d)", type);
+ return unkbuf;
+}
+
+
char *
dns_class_name(int class)
{
int class;
char *class_name;
char *type_name;
+ char *long_type_name;
const u_char *dptr;
const u_char *data_start;
GtkWidget *q_tree, *tq;
type_name = dns_type_name(type);
class_name = dns_class_name(class);
+ long_type_name = dns_long_type_name(type);
tq = add_item_to_tree(dns_tree, offset, len, "%s: type %s, class %s",
name, type_name, class_name);
add_item_to_tree(q_tree, offset, name_len, "Name: %s", name);
offset += name_len;
- add_item_to_tree(q_tree, offset, 2, "Type: %s", type_name);
+ add_item_to_tree(q_tree, offset, 2, "Type: %s", long_type_name);
offset += 2;
add_item_to_tree(q_tree, offset, 2, "Class: %s", class_name);
int class;
char *class_name;
char *type_name;
+ char *long_type_name;
const u_char *dptr;
const u_char *data_start;
u_int ttl;
type_name = dns_type_name(type);
class_name = dns_class_name(class);
+ long_type_name = dns_long_type_name(type);
ttl = pntohl(dptr);
dptr += 4;
"%s: type %s, class %s, addr %s",
name, type_name, class_name,
ip_to_str((guint8 *)dptr));
- rr_tree = add_rr_to_tree(trr, ETT_DNS_RR, offset, name, name_len, type_name,
- class_name, ttl, data_len);
+ rr_tree = add_rr_to_tree(trr, ETT_DNS_RR, offset, name, name_len,
+ long_type_name, class_name, ttl, data_len);
offset += (dptr - data_start);
add_item_to_tree(rr_tree, offset, 4, "Addr: %s",
ip_to_str((guint8 *)dptr));
"%s: type %s, class %s, ns %s",
name, type_name, class_name, ns_name);
rr_tree = add_rr_to_tree(trr, ETT_DNS_RR, offset, name, name_len,
- type_name, class_name, ttl, data_len);
+ long_type_name, class_name, ttl, data_len);
offset += (dptr - data_start);
add_item_to_tree(rr_tree, offset, ns_name_len, "Name server: %s", ns_name);
}
break;
- /* TODO: parse more record types */
+ case T_CNAME: /* "CNAME" record */
+ {
+ char cname[MAXDNAME];
+ int cname_len;
+ cname_len = get_dns_name(dns_data_ptr, dptr, 0, cname, sizeof(cname));
+ trr = add_item_to_tree(dns_tree, offset, (dptr - data_start) + data_len,
+ "%s: type %s, class %s, cname %s",
+ name, type_name, class_name, cname);
+ rr_tree = add_rr_to_tree(trr, ETT_DNS_RR, offset, name, name_len,
+ long_type_name, class_name, ttl, data_len);
+ offset += (dptr - data_start);
+ add_item_to_tree(rr_tree, offset, data_len, "Primary name: %s", cname);
+ }
+ break;
+
+ case T_PTR: /* "PTR" record */
+ {
+ char pname[MAXDNAME];
+ int pname_len;
+
+ pname_len = get_dns_name(dns_data_ptr, dptr, 0, pname, sizeof(pname));
+ trr = add_item_to_tree(dns_tree, offset, (dptr - data_start) + data_len,
+ "%s: type %s, class %s, ptr %s",
+ name, type_name, class_name, pname);
+ rr_tree = add_rr_to_tree(trr, ETT_DNS_RR, offset, name, name_len,
+ long_type_name, class_name, ttl, data_len);
+ offset += (dptr - data_start);
+ add_item_to_tree(rr_tree, offset, data_len, "Domain name: %s", pname);
+ break;
+ }
+ break;
+
+ /* TODO: parse more record types */
+
default:
trr = add_item_to_tree(dns_tree, offset, (dptr - data_start) + data_len,
"%s: type %s, class %s",
name, type_name, class_name);
- rr_tree = add_rr_to_tree(trr, ETT_DNS_RR, offset, name, name_len, type_name,
- class_name, ttl, data_len);
+ rr_tree = add_rr_to_tree(trr, ETT_DNS_RR, offset, name, name_len,
+ long_type_name, class_name, ttl, data_len);
offset += (dptr - data_start);
add_item_to_tree(rr_tree, offset, data_len, "Data");
}
git.samba.org / metze / wireshark / wip.git / commitdiff