Import ISC DHCP 3.0.1 RC6 client.

1 files changed, 488 insertions, 0 deletions

diff --git a/contrib/isc-dhcp/omapip/mrtrace.c b/contrib/isc-dhcp/omapip/mrtrace.c
new file mode 100644
index 000000000000..c3539900edfe
--- /dev/null
+++ b/contrib/isc-dhcp/omapip/mrtrace.c
@@ -0,0 +1,488 @@
+/* mrtrace.c
+
+   Subroutines that support minires tracing... */
+
+/*
+ * Copyright (c) 2001 Internet Software Consortium.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of The Internet Software Consortium nor the names
+ *    of its contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
+ * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This software has been written for the Internet Software Consortium
+ * by Ted Lemon, as part of a project for Nominum, Inc.   To learn more
+ * about the Internet Software Consortium, see http://www.isc.org/.  To
+ * learn more about Nominum, Inc., see ``http://www.nominum.com''.
+ */
+
+#include <omapip/omapip_p.h>
+
+#include "minires/minires.h"
+#include "arpa/nameser.h"
+
+static void trace_mr_output_input (trace_type_t *, unsigned, char *);
+static void trace_mr_output_stop (trace_type_t *);
+static void trace_mr_input_input (trace_type_t *, unsigned, char *);
+static void trace_mr_input_stop (trace_type_t *);
+static void trace_mr_statp_input (trace_type_t *, unsigned, char *);
+static void trace_mr_statp_stop (trace_type_t *);
+static void trace_mr_randomid_input (trace_type_t *, unsigned, char *);
+static void trace_mr_randomid_stop (trace_type_t *);
+trace_type_t *trace_mr_output;
+trace_type_t *trace_mr_input;
+trace_type_t *trace_mr_statp;
+trace_type_t *trace_mr_randomid;
+ssize_t trace_mr_send (int, void *, size_t, int);
+ssize_t trace_mr_read_playback (struct sockaddr_in *, void *, size_t);
+void trace_mr_read_record (struct sockaddr_in *, void *, ssize_t);
+ssize_t trace_mr_recvfrom (int s, void *, size_t, int,
+			   struct sockaddr *, SOCKLEN_T *);
+ssize_t trace_mr_read (int, void *, size_t);
+int trace_mr_connect (int s, struct sockaddr *, SOCKLEN_T);
+int trace_mr_socket (int, int, int);
+int trace_mr_bind (int, struct sockaddr *, SOCKLEN_T);
+int trace_mr_close (int);
+time_t trace_mr_time (time_t *);
+int trace_mr_select (int, fd_set *, fd_set *, fd_set *, struct timeval *);
+unsigned int trace_mr_res_randomid (unsigned int);
+
+extern time_t cur_time;
+
+#if defined (TRACING)
+void trace_mr_init ()
+{
+	trace_mr_output = trace_type_register ("mr-output", (void *)0,
+					       trace_mr_output_input,
+					       trace_mr_output_stop, MDL);
+	trace_mr_input = trace_type_register ("mr-input", (void *)0,
+					      trace_mr_input_input,
+					      trace_mr_input_stop, MDL);
+	trace_mr_statp = trace_type_register ("mr-statp", (void *)0,
+					      trace_mr_statp_input,
+					      trace_mr_statp_stop, MDL);
+	trace_mr_randomid = trace_type_register ("mr-randomid", (void *)0,
+						 trace_mr_randomid_input,
+						 trace_mr_randomid_stop, MDL);
+}
+
+void trace_mr_statp_setup (res_state statp)
+{
+	unsigned buflen = 0;
+	char *buf = (char *)0;
+	isc_result_t status;
+	u_int32_t id;
+	int i;
+
+	if (trace_playback ()) {
+		int nscount;
+		status = trace_get_packet (&trace_mr_statp, &buflen, &buf);
+		if (status != ISC_R_SUCCESS) {
+			log_error ("trace_mr_statp: no statp packet found.");
+			return;
+		}
+		nscount = buflen / sizeof (struct in_addr);
+		if (nscount * (sizeof (struct in_addr)) != buflen ||
+		    nscount < 1) {
+			log_error ("trace_mr_statp: bogus length: %d",
+				   buflen);
+			return;
+		}
+		if (nscount > MAXNS)
+			nscount = MAXNS;
+		for (i = 0; i < nscount; i++) {
+#if defined (HAVE_SA_LEN)
+			statp -> nsaddr_list [i].sin_len =
+				sizeof (struct sockaddr_in);
+#endif
+			memset (&statp -> nsaddr_list [i].sin_zero, 0,
+				sizeof statp -> nsaddr_list [i].sin_zero);
+			statp -> nsaddr_list [i].sin_port = htons (53); /*XXX*/
+			statp -> nsaddr_list [i].sin_family = AF_INET;
+			memcpy (&statp -> nsaddr_list [i].sin_addr,
+				(buf + i * (sizeof (struct in_addr))),
+				sizeof (struct in_addr));
+		}
+		statp -> nscount = nscount;
+		dfree (buf, MDL);
+		buf = (char *)0;
+	}
+	if (trace_record ()) {
+		trace_iov_t *iov;
+		iov = dmalloc ((statp -> nscount *
+				sizeof (trace_iov_t)), MDL);
+		if (!iov) {
+			trace_stop ();
+			log_error ("No memory for statp iov.");
+			return;
+		}
+		for (i = 0; i < statp -> nscount; i++) {
+			iov [i].buf =
+				(char *)&statp -> nsaddr_list [i].sin_addr;
+			iov [i].len = sizeof (struct in_addr);
+		}
+		trace_write_packet_iov (trace_mr_statp, i, iov, MDL);
+		dfree (iov, MDL);
+	}
+}
+#endif
+
+ssize_t trace_mr_send (int fd, void *msg, size_t len, int flags)
+{
+	ssize_t rv;
+#if defined (TRACING)
+	isc_result_t status;
+	unsigned buflen = 0;
+	char *inbuf = (char *)0;
+	u_int32_t result;
+	u_int32_t sflags;
+
+	if (trace_playback()) {
+		status = trace_get_packet (&trace_mr_output, &buflen, &inbuf);
+		if (status != ISC_R_SUCCESS) {
+			log_error ("trace_mr_recvfrom: no input found.");
+			errno = ECONNREFUSED;
+			return -1;
+		}
+		if (buflen < sizeof result) {
+			log_error ("trace_mr_recvfrom: data too short.");
+			errno = ECONNREFUSED;
+			dfree (inbuf, MDL);
+			return -1;
+		}
+		memcpy (&result, inbuf, sizeof result);
+		rv = ntohl (result);
+		dfree (inbuf, MDL);
+	} else
+#endif
+		rv = send (fd, msg, len, flags);
+#if defined (TRACING)
+	if (trace_record ()) {
+		trace_iov_t iov [3];
+		result = htonl (rv);
+		sflags = htonl (flags);
+		iov [0].len = sizeof result;
+		iov [0].buf = (char *)&result;
+		iov [1].len = sizeof sflags;
+		iov [1].buf = (char *)&flags;
+		iov [2].len = len;
+		iov [2].buf = msg;
+		trace_write_packet_iov (trace_mr_output, 2, iov, MDL);
+	}
+#endif
+	return rv;
+}
+
+#if defined (TRACING)
+ssize_t trace_mr_read_playback (struct sockaddr_in *from,
+				void *buf, size_t nbytes)
+{
+	isc_result_t status;
+	unsigned buflen = 0, left;
+	char *inbuf = (char *)0;
+	char *bufp;
+	u_int32_t result;
+
+	status = trace_get_packet (&trace_mr_input, &buflen, &inbuf);
+	if (status != ISC_R_SUCCESS) {
+		log_error ("trace_mr_recvfrom: no input found.");
+		errno = ECONNREFUSED;
+		return -1;
+	}
+	if (buflen < sizeof result) {
+		log_error ("trace_mr_recvfrom: data too short.");
+		errno = ECONNREFUSED;
+		dfree (inbuf, MDL);
+		return -1;
+	}
+	bufp = inbuf;
+	left = buflen;
+	memcpy (&result, bufp, sizeof result);
+	result = ntohl (result);
+	bufp += sizeof result;
+	left -= sizeof result;
+	if (result == 0) {
+		if (left < ((sizeof from -> sin_port) +
+			    sizeof (from -> sin_addr))) {
+			log_error ("trace_mr_recvfrom: data too short.");
+			errno = ECONNREFUSED;
+			dfree (inbuf, MDL);
+			return -1;
+		}
+		if (from)
+			memcpy (&from -> sin_addr, bufp,
+				sizeof from -> sin_addr);
+		bufp += sizeof from -> sin_addr;
+		left -= sizeof from -> sin_addr;
+		if (from)
+			memcpy (&from -> sin_port, bufp,
+				sizeof from -> sin_port);
+		bufp += sizeof from -> sin_port;
+		left -= sizeof from -> sin_port;
+		if (from) {
+			from -> sin_family = AF_INET;
+#if defined(HAVE_SA_LEN)
+			from -> sin_len = sizeof (struct sockaddr_in);
+#endif
+			memset (from -> sin_zero, 0, sizeof from -> sin_zero);
+		}
+		if (left > nbytes) {
+			log_error ("trace_mr_recvfrom: too much%s",
+				   " data.");
+			errno = ECONNREFUSED;
+			dfree (inbuf, MDL);
+			return -1;
+		}
+		memcpy (buf, bufp, left);
+		dfree (inbuf, MDL);
+		return left;
+	}
+	errno = ECONNREFUSED;
+	return -1;
+}
+
+void trace_mr_read_record (struct sockaddr_in *from, void *buf, ssize_t rv)
+{
+	trace_iov_t iov [4];
+	u_int32_t result;
+	int iolen = 0;
+	static char zero [4] = { 0, 0, 0, 0 };
+	
+	if (rv < 0)
+		result = htonl (errno);		/* XXX */
+	else
+		result = 0;
+	iov [iolen].buf = (char *)&result;
+	iov [iolen++].len = sizeof result;
+	if (rv > 0) {
+		if (from) {
+			iov [iolen].buf = (char *)&from -> sin_addr;
+			iov [iolen++].len = sizeof from -> sin_addr;
+			iov [iolen].buf = (char *)&from -> sin_port;
+			iov [iolen++].len = sizeof from -> sin_port;
+		} else {
+			iov [iolen].buf = zero;
+			iov [iolen++].len = sizeof from -> sin_addr;
+			iov [iolen].buf = zero;
+			iov [iolen++].len = sizeof from -> sin_port;
+		}
+
+		iov [iolen].buf = buf;
+		iov [iolen++].len = rv;
+	}
+	trace_write_packet_iov (trace_mr_input, iolen, iov, MDL);
+}
+#endif
+
+ssize_t trace_mr_recvfrom (int s, void *buf, size_t len, int flags,
+			   struct sockaddr *from, SOCKLEN_T *fromlen)
+{
+	ssize_t rv;
+
+#if defined (TRACING)
+	if (trace_playback ())
+		rv = trace_mr_read_playback ((struct sockaddr_in *)from,
+					     buf, len);
+	else
+#endif
+		rv = recvfrom (s, buf, len, flags, from, fromlen);
+#if defined (TRACING)
+	if (trace_record ()) {
+		trace_mr_read_record ((struct sockaddr_in *)from, buf, rv);
+	}
+#endif
+	return rv;
+}
+
+ssize_t trace_mr_read (int d, void *buf, size_t nbytes)
+{
+	ssize_t rv;
+
+#if defined (TRACING)
+	if (trace_playback ())
+		rv = trace_mr_read_playback ((struct sockaddr_in *)0,
+					     buf, nbytes);
+	else
+#endif
+		rv = read (d, buf, nbytes);
+#if defined (TRACING)
+	if (trace_record ()) {
+		trace_mr_read_record ((struct sockaddr_in *)0, buf, rv);
+	}
+#endif
+	return rv;
+}
+
+int trace_mr_connect (int s, struct sockaddr *name, SOCKLEN_T namelen)
+{
+#if defined (TRACING)
+	if (!trace_playback ())
+#endif
+		return connect (s, name, namelen);
+#if defined (TRACING)
+	return 0;
+#endif
+}
+
+int trace_mr_socket (int domain, int type, int protocol)
+{
+#if defined (TRACING)
+	if (!trace_playback ())
+#endif
+		return socket (domain, type, protocol);
+#if defined (TRACING)
+	return 100;
+#endif
+}
+
+int trace_mr_bind (int s, struct sockaddr *name, SOCKLEN_T namelen)
+{
+#if defined (TRACING)
+	if (!trace_playback ())
+#endif
+		return bind (s, name, namelen);
+#if defined (TRACING)
+	return 0;
+#endif
+}
+
+int trace_mr_close (int s)
+{
+#if defined (TRACING)
+	if (!trace_playback ())
+#endif
+		return close (s);
+#if defined (TRACING)
+	return 0;
+#endif
+}
+
+time_t trace_mr_time (time_t *tp)
+{
+#if defined (TRACING)
+	if (trace_playback ()) {
+		if (tp)
+			*tp = cur_time;
+		return cur_time;
+	}
+#endif
+	return time (tp);
+}
+
+int trace_mr_select (int s, fd_set *r, fd_set *w, fd_set *x, struct timeval *t)
+{
+#if defined (TRACING)
+	trace_type_t *ttp = (trace_type_t *)0;
+
+	if (trace_playback ()) {
+		time_t nct = trace_snoop_time (&ttp);
+		time_t secr = t -> tv_sec;
+		t -> tv_sec = nct - cur_time;
+		if (t -> tv_sec > secr)
+			return 0;
+		if (ttp == trace_mr_input)
+			return 1;
+		return 0;
+	}
+#endif
+	return select (s, r, w, x, t);
+}
+
+unsigned int trace_mr_res_randomid (unsigned int oldid)
+{
+	u_int32_t id;
+	int rid = oldid;
+#if defined (TRACING)
+	unsigned buflen = 0;
+	char *buf = (char *)0;
+	isc_result_t status;
+
+	if (trace_playback ()) {
+		int nscount;
+		status = trace_get_packet (&trace_mr_randomid, &buflen, &buf);
+		if (status != ISC_R_SUCCESS) {
+			log_error ("trace_mr_statp: no statp packet found.");
+			return oldid;
+		}
+		if (buflen != sizeof id) {
+			log_error ("trace_mr_randomid: bogus length: %d",
+				   buflen);
+			return oldid;
+		}
+		memcpy (&id, buf, sizeof id);
+		dfree (buf, MDL);
+		buf = (char *)0;
+		rid = ntohl (id);
+	}
+	if (trace_record ()) {
+		id = htonl (rid);
+		trace_write_packet (trace_mr_randomid,
+				    sizeof id, (char *)&id, MDL);
+	}
+#endif
+	return rid;
+}
+
+#if defined (TRACING)
+static void trace_mr_output_input (trace_type_t *ttype,
+				   unsigned length, char *buf)
+{
+}
+
+static void trace_mr_output_stop (trace_type_t *ttype)
+{
+}
+
+static void trace_mr_input_input (trace_type_t *ttype,
+				  unsigned length, char *buf)
+{
+	log_error ("unaccounted-for minires input.");
+}
+
+static void trace_mr_input_stop (trace_type_t *ttype)
+{
+}
+
+static void trace_mr_statp_input (trace_type_t *ttype,
+				  unsigned length, char *buf)
+{
+	log_error ("unaccounted-for minires statp input.");
+}
+
+static void trace_mr_statp_stop (trace_type_t *ttype)
+{
+}
+
+static void trace_mr_randomid_input (trace_type_t *ttype,
+				     unsigned length, char *buf)
+{
+	log_error ("unaccounted-for minires randomid input.");
+}
+
+static void trace_mr_randomid_stop (trace_type_t *ttype)
+{
+}
+#endif