3 Subroutines that support minires tracing... */
6 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
7 * Copyright (c) 2001-2003 by Internet Software Consortium
9 * Permission to use, copy, modify, and distribute this software for any
10 * purpose with or without fee is hereby granted, provided that the above
11 * copyright notice and this permission notice appear in all copies.
13 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
19 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 * Internet Systems Consortium, Inc.
23 * Redwood City, CA 94063
27 * This software has been written for Internet Systems Consortium
28 * by Ted Lemon, as part of a project for Nominum, Inc. To learn more
29 * about Internet Systems Consortium, see http://www.isc.org/. To
30 * learn more about Nominum, Inc., see ``http://www.nominum.com''.
33 #include <omapip/omapip_p.h>
35 #include "minires/minires.h"
36 #include "arpa/nameser.h"
38 static void trace_mr_output_input (trace_type_t *, unsigned, char *);
39 static void trace_mr_output_stop (trace_type_t *);
40 static void trace_mr_input_input (trace_type_t *, unsigned, char *);
41 static void trace_mr_input_stop (trace_type_t *);
42 static void trace_mr_statp_input (trace_type_t *, unsigned, char *);
43 static void trace_mr_statp_stop (trace_type_t *);
44 static void trace_mr_randomid_input (trace_type_t *, unsigned, char *);
45 static void trace_mr_randomid_stop (trace_type_t *);
46 trace_type_t *trace_mr_output;
47 trace_type_t *trace_mr_input;
48 trace_type_t *trace_mr_statp;
49 trace_type_t *trace_mr_randomid;
50 ssize_t trace_mr_send (int, void *, size_t, int);
51 ssize_t trace_mr_read_playback (struct sockaddr_in *, void *, size_t);
52 void trace_mr_read_record (struct sockaddr_in *, void *, ssize_t);
53 ssize_t trace_mr_recvfrom (int s, void *, size_t, int,
54 struct sockaddr *, SOCKLEN_T *);
55 ssize_t trace_mr_read (int, void *, size_t);
56 int trace_mr_connect (int s, struct sockaddr *, SOCKLEN_T);
57 int trace_mr_socket (int, int, int);
58 int trace_mr_bind (int, struct sockaddr *, SOCKLEN_T);
59 int trace_mr_close (int);
60 time_t trace_mr_time (time_t *);
61 int trace_mr_select (int, fd_set *, fd_set *, fd_set *, struct timeval *);
62 unsigned int trace_mr_res_randomid (unsigned int);
69 trace_mr_output = trace_type_register ("mr-output", (void *)0,
70 trace_mr_output_input,
71 trace_mr_output_stop, MDL);
72 trace_mr_input = trace_type_register ("mr-input", (void *)0,
74 trace_mr_input_stop, MDL);
75 trace_mr_statp = trace_type_register ("mr-statp", (void *)0,
77 trace_mr_statp_stop, MDL);
78 trace_mr_randomid = trace_type_register ("mr-randomid", (void *)0,
79 trace_mr_randomid_input,
80 trace_mr_randomid_stop, MDL);
83 void trace_mr_statp_setup (res_state statp)
86 char *buf = (char *)0;
91 if (trace_playback ()) {
93 status = trace_get_packet (&trace_mr_statp, &buflen, &buf);
94 if (status != ISC_R_SUCCESS) {
95 log_error ("trace_mr_statp: no statp packet found.");
98 nscount = buflen / sizeof (struct in_addr);
99 if (nscount * (sizeof (struct in_addr)) != buflen ||
101 log_error ("trace_mr_statp: bogus length: %d",
107 for (i = 0; i < nscount; i++) {
108 #if defined (HAVE_SA_LEN)
109 statp -> nsaddr_list [i].sin_len =
110 sizeof (struct sockaddr_in);
112 memset (&statp -> nsaddr_list [i].sin_zero, 0,
113 sizeof statp -> nsaddr_list [i].sin_zero);
114 statp -> nsaddr_list [i].sin_port = htons (53); /*XXX*/
115 statp -> nsaddr_list [i].sin_family = AF_INET;
116 memcpy (&statp -> nsaddr_list [i].sin_addr,
117 (buf + i * (sizeof (struct in_addr))),
118 sizeof (struct in_addr));
120 statp -> nscount = nscount;
124 if (trace_record ()) {
126 iov = dmalloc ((statp -> nscount *
127 sizeof (trace_iov_t)), MDL);
130 log_error ("No memory for statp iov.");
133 for (i = 0; i < statp -> nscount; i++) {
135 (char *)&statp -> nsaddr_list [i].sin_addr;
136 iov [i].len = sizeof (struct in_addr);
138 trace_write_packet_iov (trace_mr_statp, i, iov, MDL);
144 ssize_t trace_mr_send (int fd, void *msg, size_t len, int flags)
147 #if defined (TRACING)
150 char *inbuf = (char *)0;
154 if (trace_playback()) {
155 status = trace_get_packet (&trace_mr_output, &buflen, &inbuf);
156 if (status != ISC_R_SUCCESS) {
157 log_error ("trace_mr_recvfrom: no input found.");
158 errno = ECONNREFUSED;
161 if (buflen < sizeof result) {
162 log_error ("trace_mr_recvfrom: data too short.");
163 errno = ECONNREFUSED;
167 memcpy (&result, inbuf, sizeof result);
172 rv = send (fd, msg, len, flags);
173 #if defined (TRACING)
174 if (trace_record ()) {
177 sflags = htonl (flags);
178 iov [0].len = sizeof result;
179 iov [0].buf = (char *)&result;
180 iov [1].len = sizeof sflags;
181 iov [1].buf = (char *)&flags;
184 trace_write_packet_iov (trace_mr_output, 3, iov, MDL);
190 #if defined (TRACING)
191 ssize_t trace_mr_read_playback (struct sockaddr_in *from,
192 void *buf, size_t nbytes)
195 unsigned buflen = 0, left;
196 char *inbuf = (char *)0;
200 status = trace_get_packet (&trace_mr_input, &buflen, &inbuf);
201 if (status != ISC_R_SUCCESS) {
202 log_error ("trace_mr_recvfrom: no input found.");
203 errno = ECONNREFUSED;
206 if (buflen < sizeof result) {
207 log_error ("trace_mr_recvfrom: data too short.");
208 errno = ECONNREFUSED;
214 memcpy (&result, bufp, sizeof result);
215 result = ntohl (result);
216 bufp += sizeof result;
217 left -= sizeof result;
219 if (left < ((sizeof from -> sin_port) +
220 sizeof (from -> sin_addr))) {
221 log_error ("trace_mr_recvfrom: data too short.");
222 errno = ECONNREFUSED;
227 memcpy (&from -> sin_addr, bufp,
228 sizeof from -> sin_addr);
229 bufp += sizeof from -> sin_addr;
230 left -= sizeof from -> sin_addr;
232 memcpy (&from -> sin_port, bufp,
233 sizeof from -> sin_port);
234 bufp += sizeof from -> sin_port;
235 left -= sizeof from -> sin_port;
237 from -> sin_family = AF_INET;
238 #if defined(HAVE_SA_LEN)
239 from -> sin_len = sizeof (struct sockaddr_in);
241 memset (from -> sin_zero, 0, sizeof from -> sin_zero);
244 log_error ("trace_mr_recvfrom: too much%s",
246 errno = ECONNREFUSED;
250 memcpy (buf, bufp, left);
254 errno = ECONNREFUSED;
258 void trace_mr_read_record (struct sockaddr_in *from, void *buf, ssize_t rv)
263 static char zero [4] = { 0, 0, 0, 0 };
266 result = htonl (errno); /* XXX */
269 iov [iolen].buf = (char *)&result;
270 iov [iolen++].len = sizeof result;
273 iov [iolen].buf = (char *)&from -> sin_addr;
274 iov [iolen++].len = sizeof from -> sin_addr;
275 iov [iolen].buf = (char *)&from -> sin_port;
276 iov [iolen++].len = sizeof from -> sin_port;
278 iov [iolen].buf = zero;
279 iov [iolen++].len = sizeof from -> sin_addr;
280 iov [iolen].buf = zero;
281 iov [iolen++].len = sizeof from -> sin_port;
284 iov [iolen].buf = buf;
285 iov [iolen++].len = rv;
287 trace_write_packet_iov (trace_mr_input, iolen, iov, MDL);
291 ssize_t trace_mr_recvfrom (int s, void *buf, size_t len, int flags,
292 struct sockaddr *from, SOCKLEN_T *fromlen)
296 #if defined (TRACING)
297 if (trace_playback ())
298 rv = trace_mr_read_playback ((struct sockaddr_in *)from,
302 rv = recvfrom (s, buf, len, flags, from, fromlen);
303 #if defined (TRACING)
304 if (trace_record ()) {
305 trace_mr_read_record ((struct sockaddr_in *)from, buf, rv);
311 ssize_t trace_mr_read (int d, void *buf, size_t nbytes)
315 #if defined (TRACING)
316 if (trace_playback ())
317 rv = trace_mr_read_playback ((struct sockaddr_in *)0,
321 rv = read (d, buf, nbytes);
322 #if defined (TRACING)
323 if (trace_record ()) {
324 trace_mr_read_record ((struct sockaddr_in *)0, buf, rv);
330 int trace_mr_connect (int s, struct sockaddr *name, SOCKLEN_T namelen)
332 #if defined (TRACING)
333 if (!trace_playback ())
335 return connect (s, name, namelen);
336 #if defined (TRACING)
341 int trace_mr_socket (int domain, int type, int protocol)
343 #if defined (TRACING)
344 if (!trace_playback ())
346 return socket (domain, type, protocol);
347 #if defined (TRACING)
352 int trace_mr_bind (int s, struct sockaddr *name, SOCKLEN_T namelen)
354 #if defined (TRACING)
355 if (!trace_playback ())
357 return bind (s, name, namelen);
358 #if defined (TRACING)
363 int trace_mr_close (int s)
365 #if defined (TRACING)
366 if (!trace_playback ())
369 #if defined (TRACING)
374 time_t trace_mr_time (time_t *tp)
376 #if defined (TRACING)
377 if (trace_playback ()) {
386 int trace_mr_select (int s, fd_set *r, fd_set *w, fd_set *x, struct timeval *t)
388 #if defined (TRACING)
389 trace_type_t *ttp = (trace_type_t *)0;
391 if (trace_playback ()) {
392 time_t nct = trace_snoop_time (&ttp);
393 time_t secr = t -> tv_sec;
394 t -> tv_sec = nct - cur_time;
395 if (t -> tv_sec > secr)
397 if (ttp == trace_mr_input)
402 return select (s, r, w, x, t);
405 unsigned int trace_mr_res_randomid (unsigned int oldid)
409 #if defined (TRACING)
411 char *buf = (char *)0;
414 if (trace_playback ()) {
416 status = trace_get_packet (&trace_mr_randomid, &buflen, &buf);
417 if (status != ISC_R_SUCCESS) {
418 log_error ("trace_mr_statp: no statp packet found.");
421 if (buflen != sizeof id) {
422 log_error ("trace_mr_randomid: bogus length: %d",
426 memcpy (&id, buf, sizeof id);
431 if (trace_record ()) {
433 trace_write_packet (trace_mr_randomid,
434 sizeof id, (char *)&id, MDL);
440 #if defined (TRACING)
441 static void trace_mr_output_input (trace_type_t *ttype,
442 unsigned length, char *buf)
446 static void trace_mr_output_stop (trace_type_t *ttype)
450 static void trace_mr_input_input (trace_type_t *ttype,
451 unsigned length, char *buf)
453 log_error ("unaccounted-for minires input.");
456 static void trace_mr_input_stop (trace_type_t *ttype)
460 static void trace_mr_statp_input (trace_type_t *ttype,
461 unsigned length, char *buf)
463 log_error ("unaccounted-for minires statp input.");
466 static void trace_mr_statp_stop (trace_type_t *ttype)
470 static void trace_mr_randomid_input (trace_type_t *ttype,
471 unsigned length, char *buf)
473 log_error ("unaccounted-for minires randomid input.");
476 static void trace_mr_randomid_stop (trace_type_t *ttype)