/*
* Copyright (C) 2006, 2007, 2009-2011, 2013-2016 Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* $Id: gsstest.c,v 1.19 2011/11/30 00:48:51 marka Exp $ */
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <isc/app.h>
#include <isc/base64.h>
#include <isc/entropy.h>
#include <isc/log.h>
#include <isc/mem.h>
#include <isc/print.h>
#include <isc/sockaddr.h>
#include <isc/socket.h>
#include <isc/task.h>
#include <isc/timer.h>
#include <isc/util.h>
#include <dns/dispatch.h>
#include <dns/fixedname.h>
#include <dns/keyvalues.h>
#include <dns/log.h>
#include <dns/message.h>
#include <dns/name.h>
#include <dns/request.h>
#include <dns/result.h>
#include <dns/tkey.h>
#include <dns/tsig.h>
#include <dns/view.h>
#include <dns/dnssec.h>
#include <dns/events.h>
#include <dns/masterdump.h>
#include <dns/rdataset.h>
#include <dns/resolver.h>
#include <dns/types.h>
#include <dst/result.h>
#ifdef GSSAPI
#include ISC_PLATFORM_GSSAPIHEADER
struct dst_context {
unsigned int magic;
dst_key_t *key;
isc_mem_t *mctx;
void *opaque;
};
#define CHECK(str, x) { \
if ((x) != ISC_R_SUCCESS) { \
fprintf(stderr, "I:%d:%s: %s\n", __LINE__, (str), isc_result_totext(x)); \
goto end; \
} \
}
static dns_fixedname_t servername, gssname;
static isc_mem_t *mctx;
static dns_requestmgr_t *requestmgr;
static isc_sockaddr_t address;
static dns_tsig_keyring_t *ring;
static dns_tsigkey_t *tsigkey = NULL;
static gss_ctx_id_t gssctx;
static gss_ctx_id_t *gssctxp = &gssctx;
#define RUNCHECK(x) RUNTIME_CHECK((x) == ISC_R_SUCCESS)
#define PORT 53
#define TIMEOUT 30
static void initctx1(isc_task_t *task, isc_event_t *event);
static void sendquery(isc_task_t *task, isc_event_t *event);
static void setup();
static void
console(isc_task_t *task, isc_event_t *event)
{
char buf[32];
int c;
isc_event_t *ev = NULL;
isc_event_free(&event);
for (;;) {
printf("\nCommand => ");
c = scanf("%31s", buf);
if (c == EOF || strcmp(buf, "quit") == 0) {
isc_app_shutdown();
return;
}
if (strcmp(buf, "initctx") == 0) {
ev = isc_event_allocate(mctx, (void *)1, 1, initctx1,
NULL, sizeof(*event));
isc_task_send(task, &ev);
return;
}
if (strcmp(buf, "query") == 0) {
ev = isc_event_allocate(mctx, (void *)1, 1, sendquery,
NULL, sizeof(*event));
isc_task_send(task, &ev);
return;
}
printf("Unknown command\n");
}
}
static void
recvresponse(isc_task_t *task, isc_event_t *event) {
dns_requestevent_t *reqev = (dns_requestevent_t *)event;
isc_result_t result, result2;
dns_message_t *query = NULL, *response = NULL;
isc_buffer_t outtoken;
isc_buffer_t outbuf;
char output[10 * 1024];
unsigned char array[DNS_NAME_MAXTEXT + 1];
isc_buffer_init(&outtoken, array, sizeof(array));
UNUSED(task);
REQUIRE(reqev != NULL);
query = reqev->ev_arg;
if (reqev->result != ISC_R_SUCCESS) {
fprintf(stderr, "I:request event result: %s\n",
isc_result_totext(reqev->result));
goto end;
}
response = NULL;
result = dns_message_create(mctx, DNS_MESSAGE_INTENTPARSE, &response);
CHECK("dns_message_create", result);
printf("\nReceived Response:\n");
result2 = dns_request_getresponse(reqev->request, response,
DNS_MESSAGEPARSE_PRESERVEORDER);
isc_buffer_init(&outbuf, output, sizeof(output));
result = dns_message_totext(response, &dns_master_style_debug, 0,
&outbuf);
CHECK("dns_message_totext", result);
printf("%.*s\n", (int)isc_buffer_usedlength(&outbuf),
(char *)isc_buffer_base(&outbuf));
CHECK("dns_request_getresponse", result2);
if (response != NULL)
dns_message_destroy(&response);
end:
if (query != NULL)
dns_message_destroy(&query);
if (reqev->request != NULL)
dns_request_destroy(&reqev->request);
isc_event_free(&event);
event = isc_event_allocate(mctx, (void *)1, 1, console, NULL,
sizeof(*event));
isc_task_send(task, &event);
return;
}
static void
sendquery(isc_task_t *task, isc_event_t *event)
{
dns_request_t *request = NULL;
dns_message_t *message = NULL;
dns_name_t *qname = NULL;
dns_rdataset_t *qrdataset = NULL;
isc_result_t result;
dns_fixedname_t queryname;
isc_buffer_t buf;
isc_buffer_t outbuf;
char output[10 * 1024];
static char host[256];
int c;
isc_event_free(&event);
printf("Query => ");
c = scanf("%255s", host);
if (c == EOF)
return;
dns_fixedname_init(&queryname);
isc_buffer_init(&buf, host, strlen(host));
isc_buffer_add(&buf, strlen(host));
result = dns_name_fromtext(dns_fixedname_name(&queryname), &buf,
dns_rootname, 0, NULL);
CHECK("dns_name_fromtext", result);
result = dns_message_create(mctx, DNS_MESSAGE_INTENTRENDER, &message);
if (result != ISC_R_SUCCESS)
goto end;
message->opcode = dns_opcode_query;
message->rdclass = dns_rdataclass_in;
message->id = (unsigned short)(random() & 0xFFFF);
result = dns_message_gettempname(message, &qname);
if (result != ISC_R_SUCCESS)
goto end;
result = dns_message_gettemprdataset(message, &qrdataset);
if (result != ISC_R_SUCCESS)
goto end;
dns_name_init(qname, NULL);
dns_name_clone(dns_fixedname_name(&queryname), qname);
dns_rdataset_makequestion(qrdataset, dns_rdataclass_in,
dns_rdatatype_a);
ISC_LIST_APPEND(qname->list, qrdataset, link);
dns_message_addname(message, qname, DNS_SECTION_QUESTION);
result = dns_request_create(requestmgr, message, &address, 0, tsigkey,
TIMEOUT, task, recvresponse,
message, &request);
CHECK("dns_request_create", result);
printf("Submitting query:\n");
isc_buffer_init(&outbuf, output, sizeof(output));
result = dns_message_totext(message, &dns_master_style_debug, 0,
&outbuf);
CHECK("dns_message_totext", result);
printf("%.*s\n", (int)isc_buffer_usedlength(&outbuf),
(char *)isc_buffer_base(&outbuf));
return;
end:
if (qname != NULL)
dns_message_puttempname(message, &qname);
if (qrdataset != NULL)
dns_message_puttemprdataset(message, &qrdataset);
if (message != NULL)
dns_message_destroy(&message);
}
static void
initctx2(isc_task_t *task, isc_event_t *event) {
dns_requestevent_t *reqev = (dns_requestevent_t *)event;
isc_result_t result;
dns_message_t *query = NULL, *response = NULL;
isc_buffer_t outtoken;
unsigned char array[DNS_NAME_MAXTEXT + 1];
dns_rdataset_t *rdataset;
dns_rdatatype_t qtype;
dns_name_t *question_name;
UNUSED(task);
REQUIRE(reqev != NULL);
query = reqev->ev_arg;
if (reqev->result != ISC_R_SUCCESS) {
fprintf(stderr, "I:request event result: %s\n",
isc_result_totext(reqev->result));
goto end;
}
response = NULL;
result = dns_message_create(mctx, DNS_MESSAGE_INTENTPARSE, &response);
CHECK("dns_message_create", result);
result = dns_request_getresponse(reqev->request, response,
DNS_MESSAGEPARSE_PRESERVEORDER);
CHECK("dns_request_getresponse", result);
if (response->rcode != dns_rcode_noerror) {
result = ISC_RESULTCLASS_DNSRCODE + response->rcode;
fprintf(stderr, "I:response rcode: %s\n",
isc_result_totext(result));
goto end;
}
printf("Received token from server, calling gss_init_sec_context()\n");
isc_buffer_init(&outtoken, array, DNS_NAME_MAXTEXT + 1);
result = dns_tkey_processgssresponse(query, response,
dns_fixedname_name(&gssname),
&gssctx, &outtoken,
&tsigkey, ring, NULL);
gssctx = *gssctxp;
CHECK("dns_tkey_processgssresponse", result);
printf("Context accepted\n");
question_name = NULL;
dns_message_currentname(response, DNS_SECTION_ANSWER, &question_name);
rdataset = ISC_LIST_HEAD(question_name->list);
INSIST(rdataset != NULL);
qtype = rdataset->type;
if (qtype == dns_rdatatype_tkey) {
printf("Received TKEY response from server\n");
printf("Context completed\n");
} else {
printf("Did not receive TKEY response from server\n");
printf("Context not completed\n");
dns_tsigkey_detach(&tsigkey);
tsigkey = NULL;
}
dns_message_destroy(&response);
end:
if (query != NULL)
dns_message_destroy(&query);
if (reqev->request != NULL)
dns_request_destroy(&reqev->request);
isc_event_free(&event);
event = isc_event_allocate(mctx, (void *)1, 1, console, NULL,
sizeof(*event));
isc_task_send(task, &event);
return;
}
static void
initctx1(isc_task_t *task, isc_event_t *event) {
char gssid[512];
char contextname[512];
isc_result_t result;
isc_buffer_t buf;
dns_message_t *query;
dns_request_t *request;
int c;
isc_event_free(&event);
printf("Initctx - GSS name => ");
c = scanf("%511s", gssid);
if (c == EOF)
return;
snprintf(contextname, sizeof(contextname),
"gsstest.context.%d.", (int)time(NULL));
printf("Initctx - context name we're using: %s\n", contextname);
printf("Negotiating GSSAPI context: ");
printf("%s", gssid);
printf("\n");
/*
* Setup a GSSAPI context with the server
*/
dns_fixedname_init(&servername);
isc_buffer_init(&buf, contextname, strlen(contextname));
isc_buffer_add(&buf, strlen(contextname));
result = dns_name_fromtext(dns_fixedname_name(&servername), &buf,
dns_rootname, 0, NULL);
CHECK("dns_name_fromtext", result);
/* Make name happen */
dns_fixedname_init(&gssname);
isc_buffer_init(&buf, gssid, strlen(gssid));
isc_buffer_add(&buf, strlen(gssid));
result = dns_name_fromtext(dns_fixedname_name(&gssname), &buf,
dns_rootname, 0, NULL);
CHECK("dns_name_fromtext", result);
query = NULL;
result = dns_message_create(mctx, DNS_MESSAGE_INTENTRENDER, &query);
CHECK("dns_message_create", result);
printf("Calling gss_init_sec_context()\n");
gssctx = GSS_C_NO_CONTEXT;
result = dns_tkey_buildgssquery(query, dns_fixedname_name(&servername),
dns_fixedname_name(&gssname),
NULL, 36000, &gssctx, ISC_TRUE,
mctx, NULL);
CHECK("dns_tkey_buildgssquery", result);
printf("Sending context token to server\n");
request = NULL;
result = dns_request_create(requestmgr, query, &address, 0, NULL,
TIMEOUT, task, initctx2, query, &request);
CHECK("dns_request_create", result);
return;
end:
event = isc_event_allocate(mctx, (void *)1, 1, console, NULL,
sizeof(*event));
isc_task_send(task, &event);return;
}
static void
setup(void)
{
for (;;) {
char serveraddress[512];
struct in_addr inaddr;
int c;
printf("Server IP => ");
c = scanf("%511s", serveraddress);
if (c == EOF || strcmp(serveraddress, "quit") == 0) {
isc_app_shutdown();
return;
}
if (inet_pton(AF_INET, serveraddress, &inaddr) == 1) {
isc_sockaddr_fromin(&address, &inaddr, PORT);
return;
}
}
}
int
main(int argc, char *argv[]) {
isc_taskmgr_t *taskmgr;
isc_timermgr_t *timermgr;
isc_socketmgr_t *socketmgr;
isc_socket_t *sock;
unsigned int attrs, attrmask;
isc_sockaddr_t bind_any;
dns_dispatchmgr_t *dispatchmgr;
dns_dispatch_t *dispatchv4;
dns_view_t *view;
isc_entropy_t *ectx;
isc_task_t *task;
isc_log_t *lctx = NULL;
isc_logconfig_t *lcfg = NULL;
isc_logdestination_t destination;
UNUSED(argv);
UNUSED(argc);
RUNCHECK(isc_app_start());
dns_result_register();
mctx = NULL;
RUNCHECK(isc_mem_create(0, 0, &mctx));
RUNCHECK(isc_log_create(mctx, &lctx, &lcfg));
isc_log_setcontext(lctx);
dns_log_init(lctx);
dns_log_setcontext(lctx);
/*
* Create and install the default channel.
*/
destination.file.stream = stderr;
destination.file.name = NULL;
destination.file.versions = ISC_LOG_ROLLNEVER;
destination.file.maximum_size = 0;
RUNCHECK(isc_log_createchannel(lcfg, "_default",
ISC_LOG_TOFILEDESC,
ISC_LOG_DYNAMIC,
&destination, ISC_LOG_PRINTTIME));
RUNCHECK(isc_log_usechannel(lcfg, "_default", NULL, NULL));
isc_log_setdebuglevel(lctx, 9);
ectx = NULL;
RUNCHECK(isc_entropy_create(mctx, &ectx));
RUNCHECK(isc_entropy_createfilesource(ectx, "/dev/urandom"));
RUNCHECK(dst_lib_init(mctx, ectx, ISC_ENTROPY_GOODONLY));
taskmgr = NULL;
RUNCHECK(isc_taskmgr_create(mctx, 1, 0, &taskmgr));
task = NULL;
RUNCHECK(isc_task_create(taskmgr, 0, &task));
timermgr = NULL;
RUNCHECK(isc_timermgr_create(mctx, &timermgr));
socketmgr = NULL;
RUNCHECK(isc_socketmgr_create(mctx, &socketmgr));
dispatchmgr = NULL;
RUNCHECK(dns_dispatchmgr_create(mctx, ectx, &dispatchmgr));
isc_sockaddr_any(&bind_any);
attrs = DNS_DISPATCHATTR_UDP |
DNS_DISPATCHATTR_MAKEQUERY |
DNS_DISPATCHATTR_IPV4;
attrmask = DNS_DISPATCHATTR_UDP |
DNS_DISPATCHATTR_TCP |
DNS_DISPATCHATTR_IPV4 |
DNS_DISPATCHATTR_IPV6;
dispatchv4 = NULL;
RUNCHECK(dns_dispatch_getudp(dispatchmgr, socketmgr, taskmgr,
&bind_any, 4096, 4, 2, 3, 5,
attrs, attrmask, &dispatchv4));
requestmgr = NULL;
RUNCHECK(dns_requestmgr_create(mctx, timermgr, socketmgr, taskmgr,
dispatchmgr, dispatchv4, NULL,
&requestmgr));
ring = NULL;
RUNCHECK(dns_tsigkeyring_create(mctx, &ring));
view = NULL;
RUNCHECK(dns_view_create(mctx, 0, "_test", &view));
dns_view_setkeyring(view, ring);
sock = NULL;
RUNCHECK(isc_socket_create(socketmgr, PF_INET, isc_sockettype_udp,
&sock));
setup();
RUNCHECK(isc_app_onrun(mctx, task, console, NULL));
(void)isc_app_run();
if (tsigkey)
dns_tsigkey_detach(&tsigkey);
dns_requestmgr_shutdown(requestmgr);
dns_requestmgr_detach(&requestmgr);
dns_dispatch_detach(&dispatchv4);
dns_dispatchmgr_destroy(&dispatchmgr);
isc_timermgr_destroy(&timermgr);
isc_task_detach(&task);
isc_taskmgr_destroy(&taskmgr);
isc_socket_detach(&sock);
isc_socketmgr_destroy(&socketmgr);
isc_mem_stats(mctx, stdout);
dns_view_detach(&view);
dst_lib_destroy();
isc_entropy_detach(&ectx);
isc_mem_stats(mctx, stdout);
isc_mem_destroy(&mctx);
isc_app_finish();
return (0);
}
#else
int
main(int argc, char *argv[]) {
UNUSED(argc);
UNUSED(argv);
fprintf(stderr, "R:GSSAPIONLY\n");
return (0);
}
#endif