mirror of
https://github.com/isc-projects/bind9.git
synced 2026-03-09 09:40:45 -04:00
Mostly functional version of host. Some limitations and formatting errors
still exist.
This commit is contained in:
Michael Sawyer
parent
98e8a46972
commit
3fbc17b5e3
1 changed files with 485 additions and 0 deletions
485
bin/dig/host.c
Normal file
485
bin/dig/host.c
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@ -0,0 +1,485 @@
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/*
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* Copyright (C) 2000 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#include <config.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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extern int h_errno;
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#include <isc/types.h>
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#include <isc/app.h>
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#include <isc/assertions.h>
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#include <isc/error.h>
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#include <isc/mem.h>
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#include <isc/net.h>
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#include <isc/netdb.h>
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#include <isc/result.h>
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#include <isc/sockaddr.h>
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#include <isc/socket.h>
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#include <isc/task.h>
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#include <isc/timer.h>
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#include <isc/time.h>
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#include <isc/buffer.h>
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#include <isc/list.h>
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#include <isc/util.h>
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#include <isc/commandline.h>
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#include <dns/types.h>
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#include <dns/message.h>
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#include <dns/name.h>
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#include <dns/fixedname.h>
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#include <dns/rdata.h>
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#include <dns/rdatalist.h>
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#include <dns/rdataset.h>
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#include <dns/rdataclass.h>
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#include <dns/rdatatype.h>
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#include <dns/result.h>
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#include <dig/dig.h>
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#include <dig/printmsg.h>
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extern ISC_LIST(dig_lookup_t) lookup_list;
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extern ISC_LIST(dig_server_t) server_list;
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extern isc_boolean_t tcp_mode,
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recurse,
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have_ipv6;
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extern in_port_t port;
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extern unsigned int timeout;
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extern isc_mem_t *mctx;
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extern isc_taskmgr_t *taskmgr;
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extern isc_task_t *task;
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extern isc_timermgr_t *timermgr;
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extern isc_socketmgr_t *socketmgr;
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extern dns_messageid_t id;
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extern dns_name_t rootorg;
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extern char *rootspace[BUFSIZE];
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extern isc_buffer_t rootbuf;
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extern int sendcount;
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isc_boolean_t short_form=ISC_TRUE,
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filter=ISC_FALSE;
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static char *opcodetext[] = {
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"QUERY",
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"IQUERY",
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"STATUS",
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"RESERVED3",
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"NOTIFY",
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"UPDATE",
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"RESERVED6",
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"RESERVED7",
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"RESERVED8",
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"RESERVED9",
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"RESERVED10",
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"RESERVED11",
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"RESERVED12",
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"RESERVED13",
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"RESERVED14",
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"RESERVED15"
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};
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static char *rcodetext[] = {
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"NOERROR",
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"FORMERR",
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"SERVFAIL",
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"NXDOMAIN",
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"NOTIMPL",
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"REFUSED",
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"YXDOMAIN",
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"YXRRSET",
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"NXRRSET",
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"NOTAUTH",
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"NOTZONE",
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"RESERVED11",
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"RESERVED12",
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"RESERVED13",
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"RESERVED14",
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"RESERVED15",
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"BADVERS"
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};
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void
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check_next_lookup (dig_lookup_t *lookup) {
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dig_lookup_t *next;
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dig_query_t *query;
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isc_boolean_t still_working=ISC_FALSE;
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#ifdef DEBUG
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puts ("In check_next_lookup");
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#endif
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for (query = ISC_LIST_HEAD(lookup->q);
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query != NULL;
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query = ISC_LIST_NEXT(query, link)) {
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if (query->working) {
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#ifdef DEBUG
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puts ("Still have a worker.");
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#endif
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still_working=ISC_TRUE;
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}
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}
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if (still_working)
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return;
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next = ISC_LIST_NEXT (lookup, link);
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if (next == NULL) {
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#ifdef DEBUG
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puts ("Shutting Down.");
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#endif
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isc_app_shutdown();
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return;
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}
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setup_lookup(next);
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#ifdef NEVER
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if (tcp_mode)
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do_lookup_tcp(next);
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else
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#endif
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do_lookup_udp(next);
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}
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static void
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show_usage() {
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fatal ("Usage.");
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}
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static void
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say_message(char *host, char *msg, dns_rdata_t *rdata, isc_buffer_t *target) {
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isc_region_t r;
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isc_result_t result;
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result = dns_rdata_totext( rdata, NULL, target);
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check_result(result, "dns_rdata_totext");
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isc_buffer_used(target, &r);
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printf ( "%s %s %.*s\n", host, msg, (int)r.length,
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(char *)r.base);
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}
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static isc_result_t
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printsection(dns_message_t *msg, dns_section_t sectionid, char *section_name,
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isc_boolean_t headers)
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{
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dns_name_t *name, *print_name;
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dns_rdataset_t *rdataset;
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dns_rdata_t rdata;
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isc_buffer_t target;
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isc_result_t result, loopresult;
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isc_region_t r;
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dns_name_t empty_name;
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char t[4096];
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isc_boolean_t first;
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isc_boolean_t no_rdata;
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if (sectionid == DNS_SECTION_QUESTION)
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no_rdata = ISC_TRUE;
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else
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no_rdata = ISC_FALSE;
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if (headers)
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printf(";; %s SECTION:\n", section_name);
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dns_name_init(&empty_name, NULL);
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result = dns_message_firstname(msg, sectionid);
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if (result == ISC_R_NOMORE)
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return (ISC_R_SUCCESS);
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else if (result != ISC_R_SUCCESS)
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return (result);
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for (;;) {
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name = NULL;
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dns_message_currentname(msg, sectionid, &name);
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isc_buffer_init(&target, t, sizeof t, ISC_BUFFERTYPE_TEXT);
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first = ISC_TRUE;
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print_name = name;
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for (rdataset = ISC_LIST_HEAD(name->list);
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rdataset != NULL;
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rdataset = ISC_LIST_NEXT(rdataset, link)) {
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if (!short_form) {
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result = dns_rdataset_totext(rdataset,
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print_name,
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ISC_FALSE,
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no_rdata,
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&target);
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if (result != ISC_R_SUCCESS)
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return (result);
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#ifdef USEINITALWS
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if (first) {
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print_name = &empty_name;
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first = ISC_FALSE;
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}
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#endif
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} else {
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loopresult = dns_rdataset_first(rdataset);
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while (loopresult == ISC_R_SUCCESS) {
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dns_rdataset_current(rdataset, &rdata);
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if (rdata.type == dns_rdatatype_a) {
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say_message ("Something",
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"has address",
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&rdata,
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&target);
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} else if
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(rdata.type == dns_rdatatype_mx) {
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say_message ("Something",
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"mail server",
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&rdata,
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&target);
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} else if
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(rdata.type == dns_rdatatype_ns) {
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say_message ("Something",
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"name server",
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&rdata,
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&target);
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}
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loopresult = dns_rdataset_next(
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rdataset);
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}
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}
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}
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if (!short_form) {
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isc_buffer_used(&target, &r);
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if (no_rdata)
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printf(";%.*s", (int)r.length,
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(char *)r.base);
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else
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printf("%.*s", (int)r.length, (char *)r.base);
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}
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result = dns_message_nextname(msg, sectionid);
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if (result == ISC_R_NOMORE)
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break;
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else if (result != ISC_R_SUCCESS)
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return (result);
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}
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return (ISC_R_SUCCESS);
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}
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static isc_result_t
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printrdata(dns_message_t *msg, dns_rdataset_t *rdataset, dns_name_t *owner,
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char *set_name, isc_boolean_t headers)
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{
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isc_buffer_t target;
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isc_result_t result;
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isc_region_t r;
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char t[4096];
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UNUSED(msg);
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if (headers)
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printf(";; %s SECTION:\n", set_name);
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isc_buffer_init(&target, t, sizeof t, ISC_BUFFERTYPE_TEXT);
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result = dns_rdataset_totext(rdataset, owner, ISC_FALSE, ISC_FALSE,
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&target);
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if (result != ISC_R_SUCCESS)
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return (result);
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isc_buffer_used(&target, &r);
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printf("%.*s", (int)r.length, (char *)r.base);
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return (ISC_R_SUCCESS);
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}
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isc_result_t
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printmessage(dns_message_t *msg, isc_boolean_t headers) {
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isc_boolean_t did_flag = ISC_FALSE;
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dns_rdataset_t *opt, *tsig;
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dns_name_t *tsigname;
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isc_result_t result;
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result = ISC_R_SUCCESS;
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if (!short_form) {
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printf(";; ->>HEADER<<- opcode: %s, status: %s, id: %u\n",
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opcodetext[msg->opcode], rcodetext[msg->rcode],
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msg->id);
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printf(";; flags: ");
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if ((msg->flags & DNS_MESSAGEFLAG_QR) != 0) {
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printf("qr");
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did_flag = ISC_TRUE;
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}
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if ((msg->flags & DNS_MESSAGEFLAG_AA) != 0) {
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printf("%saa", did_flag ? " " : "");
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did_flag = ISC_TRUE;
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}
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if ((msg->flags & DNS_MESSAGEFLAG_TC) != 0) {
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printf("%stc", did_flag ? " " : "");
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did_flag = ISC_TRUE;
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}
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if ((msg->flags & DNS_MESSAGEFLAG_RD) != 0) {
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printf("%srd", did_flag ? " " : "");
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did_flag = ISC_TRUE;
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}
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if ((msg->flags & DNS_MESSAGEFLAG_RA) != 0) {
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printf("%sra", did_flag ? " " : "");
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did_flag = ISC_TRUE;
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}
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if ((msg->flags & DNS_MESSAGEFLAG_AD) != 0) {
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printf("%sad", did_flag ? " " : "");
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did_flag = ISC_TRUE;
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}
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if ((msg->flags & DNS_MESSAGEFLAG_CD) != 0) {
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printf("%scd", did_flag ? " " : "");
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did_flag = ISC_TRUE;
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}
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printf("; QUERY: %u, ANSWER: %u, AUTHORITY: %u, ADDITIONAL: %u\n",
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msg->counts[DNS_SECTION_QUESTION],
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msg->counts[DNS_SECTION_ANSWER],
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msg->counts[DNS_SECTION_AUTHORITY],
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msg->counts[DNS_SECTION_ADDITIONAL]);
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opt = dns_message_getopt(msg);
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if (opt != NULL)
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printf(";; EDNS: version: %u, udp=%u\n",
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(unsigned int)((opt->ttl & 0x00ff0000) >> 16),
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(unsigned int)opt->rdclass);
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tsigname = NULL;
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tsig = dns_message_gettsig(msg, &tsigname);
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if (tsig != NULL)
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printf(";; PSEUDOSECTIONS: TSIG\n");
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}
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if (! ISC_LIST_EMPTY(msg->sections[DNS_SECTION_QUESTION]) &&
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!short_form ) {
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printf("\n");
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result = printsection(msg, DNS_SECTION_QUESTION, "QUESTION",
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ISC_TRUE);
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if (result != ISC_R_SUCCESS)
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return (result);
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}
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if (! ISC_LIST_EMPTY(msg->sections[DNS_SECTION_ANSWER])) {
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if (!short_form)
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printf("\n");
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result = printsection(msg, DNS_SECTION_ANSWER, "ANSWER",
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!short_form);
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if (result != ISC_R_SUCCESS)
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return (result);
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}
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if (! ISC_LIST_EMPTY(msg->sections[DNS_SECTION_AUTHORITY]) &&
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!short_form ) {
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printf("\n");
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result = printsection(msg, DNS_SECTION_AUTHORITY, "AUTHORITY",
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ISC_TRUE);
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if (result != ISC_R_SUCCESS)
|
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return (result);
|
||||
}
|
||||
if (! ISC_LIST_EMPTY(msg->sections[DNS_SECTION_ADDITIONAL]) &&
|
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!short_form ) {
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||||
printf("\n");
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result = printsection(msg, DNS_SECTION_ADDITIONAL,
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"ADDITIONAL", ISC_TRUE);
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if (result != ISC_R_SUCCESS)
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||||
return (result);
|
||||
}
|
||||
if ((tsig != NULL) && !short_form) {
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printf("\n");
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result = printrdata(msg, tsig, tsigname,
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"PSEUDOSECTION TSIG", ISC_TRUE);
|
||||
if (result != ISC_R_SUCCESS)
|
||||
return (result);
|
||||
}
|
||||
if (!short_form)
|
||||
printf("\n");
|
||||
|
||||
return (result);
|
||||
}
|
||||
|
||||
void
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parse_args(isc_boolean_t is_batchfile, int argc, char **argv) {
|
||||
isc_boolean_t have_host=ISC_FALSE,
|
||||
recursion=ISC_TRUE,
|
||||
xfr_mode=ISC_FALSE;
|
||||
char hostname[MXNAME];
|
||||
char servname[MXNAME];
|
||||
char querytype[32]="a";
|
||||
dig_server_t *srv;
|
||||
dig_lookup_t *lookup;
|
||||
int c;
|
||||
|
||||
while ((c = isc_commandline_parse(argc, argv,"lvwrdt:a")) != EOF) {
|
||||
switch (c) {
|
||||
case 'l':
|
||||
tcp_mode = ISC_TRUE;
|
||||
xfr_mode = ISC_TRUE;
|
||||
filter = ISC_TRUE;
|
||||
strcpy (querytype, "axfr");
|
||||
break;
|
||||
case 'v':
|
||||
case 'd':
|
||||
short_form = ISC_FALSE;
|
||||
break;
|
||||
case 'r':
|
||||
recursion = ISC_FALSE;
|
||||
break;
|
||||
case 't':
|
||||
strncpy (querytype, isc_commandline_argument, 32);
|
||||
break;
|
||||
case 'a':
|
||||
strcpy (querytype, "any");
|
||||
short_form = ISC_FALSE;
|
||||
break;
|
||||
case 'w':
|
||||
/* XXXMWS This should be a system-indep.
|
||||
thing! */
|
||||
timeout = 32767;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (isc_commandline_index >= argc) {
|
||||
show_usage();
|
||||
}
|
||||
strncpy (hostname, argv[isc_commandline_index], MXNAME);
|
||||
if (argc > isc_commandline_index+1) {
|
||||
srv=isc_mem_allocate(mctx, sizeof(struct dig_server));
|
||||
if (srv == NULL)
|
||||
fatal ("Memory allocation failure.");
|
||||
strncpy(srv->servername,
|
||||
argv[isc_commandline_index+1],MXNAME-1);
|
||||
#ifdef DEBUG
|
||||
fprintf (stderr, "Server is %s\n",srv->servername);
|
||||
#endif
|
||||
ISC_LIST_APPEND(server_list, srv, link);
|
||||
}
|
||||
|
||||
lookup = isc_mem_allocate (mctx,
|
||||
sizeof(struct dig_lookup));
|
||||
if (lookup == NULL)
|
||||
fatal ("Memory allocation failure.");
|
||||
lookup->pending = ISC_FALSE;
|
||||
strncpy (lookup->textname, hostname, MXNAME);
|
||||
strncpy (lookup->rttext, querytype, 32);
|
||||
strcpy (lookup->rctext,"in");
|
||||
lookup->namespace[0]=0;
|
||||
lookup->sendspace[0]=0;
|
||||
lookup->sendmsg=NULL;
|
||||
lookup->name=NULL;
|
||||
lookup->timer = NULL;
|
||||
lookup->xfr_q = NULL;
|
||||
lookup->doing_xfr = ISC_FALSE;
|
||||
ISC_LIST_INIT(lookup->q);
|
||||
ISC_LIST_APPEND(lookup_list, lookup, link);
|
||||
have_host = ISC_TRUE;
|
||||
}
|
||||
|
||||
Loading…
Reference in a new issue