[deb_libnfs.git] / lib / pdu.c

/*
   Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published by
   the Free Software Foundation; either version 2.1 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifdef AROS
#include "aros_compat.h"
#endif

#ifdef WIN32
#include "win32_compat.h"
#else
#include <strings.h>
#endif/*WIN32*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <assert.h>
#include <errno.h>
#include "slist.h"
#include "libnfs-zdr.h"
#include "libnfs.h"
#include "libnfs-raw.h"
#include "libnfs-private.h"

struct rpc_pdu *rpc_allocate_pdu(struct rpc_context *rpc, int program, int version, int procedure, rpc_cb cb, void *private_data, zdrproc_t zdr_decode_fn, int zdr_decode_bufsize)
{
	struct rpc_pdu *pdu;
	struct rpc_msg msg;

	assert(rpc->magic == RPC_CONTEXT_MAGIC);

	pdu = malloc(sizeof(struct rpc_pdu));
	if (pdu == NULL) {
		rpc_set_error(rpc, "Out of memory: Failed to allocate pdu structure");
		return NULL;
	}
	memset(pdu, 0, sizeof(struct rpc_pdu));
	pdu->xid                = rpc->xid++;
	pdu->cb                 = cb;
	pdu->private_data       = private_data;
	pdu->zdr_decode_fn      = zdr_decode_fn;
	pdu->zdr_decode_bufsize = zdr_decode_bufsize;

	zdrmem_create(&pdu->zdr, rpc->encodebuf, rpc->encodebuflen, ZDR_ENCODE);
	if (rpc->is_udp == 0) {
		zdr_setpos(&pdu->zdr, 4); /* skip past the record marker */
	}

	memset(&msg, 0, sizeof(struct rpc_msg));
	msg.xid                = pdu->xid;
        msg.direction          = CALL;
	msg.body.cbody.rpcvers = RPC_MSG_VERSION;
	msg.body.cbody.prog    = program;
	msg.body.cbody.vers    = version;
	msg.body.cbody.proc    = procedure;
	msg.body.cbody.cred    = rpc->auth->ah_cred;
	msg.body.cbody.verf    = rpc->auth->ah_verf;

	if (zdr_callmsg(&pdu->zdr, &msg) == 0) {
		rpc_set_error(rpc, "zdr_callmsg failed");
		zdr_destroy(&pdu->zdr);
		free(pdu);
		return NULL;
	}

	return pdu;
}

void rpc_free_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu)
{
	assert(rpc->magic == RPC_CONTEXT_MAGIC);

	if (pdu->outdata.data != NULL) {
		free(pdu->outdata.data);
		pdu->outdata.data = NULL;
	}

	if (pdu->zdr_decode_buf != NULL) {
		zdr_free(pdu->zdr_decode_fn, pdu->zdr_decode_buf);
		free(pdu->zdr_decode_buf);
		pdu->zdr_decode_buf = NULL;
	}

	zdr_destroy(&pdu->zdr);

	free(pdu);
}


int rpc_queue_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu)
{
	int size, recordmarker;

	assert(rpc->magic == RPC_CONTEXT_MAGIC);

	size = zdr_getpos(&pdu->zdr);

	/* for udp we dont queue, we just send it straight away */
	if (rpc->is_udp != 0) {
// XXX add a rpc->udp_dest_sock_size  and get rid of sys/socket.h and netinet/in.h
		if (sendto(rpc->fd, rpc->encodebuf, size, MSG_DONTWAIT, rpc->udp_dest, sizeof(struct sockaddr_in)) < 0) {
			rpc_set_error(rpc, "Sendto failed with errno %s", strerror(errno));
			rpc_free_pdu(rpc, pdu);
			return -1;
		}
		SLIST_ADD_END(&rpc->waitpdu, pdu);
		return 0;
	}

	/* write recordmarker */
	zdr_setpos(&pdu->zdr, 0);
	recordmarker = (size - 4) | 0x80000000;
	zdr_int(&pdu->zdr, &recordmarker);

	pdu->outdata.size = size;
	pdu->outdata.data = malloc(pdu->outdata.size);
	if (pdu->outdata.data == NULL) {
		rpc_set_error(rpc, "Out of memory. Failed to allocate buffer for pdu\n");
		rpc_free_pdu(rpc, pdu);
		return -1;
	}

	memcpy(pdu->outdata.data, rpc->encodebuf, pdu->outdata.size);
	SLIST_ADD_END(&rpc->outqueue, pdu);

	return 0;
}

int rpc_get_pdu_size(char *buf)
{
	uint32_t size;

	size = ntohl(*(uint32_t *)buf);

	return (size & 0x7fffffff) + 4;
}

static int rpc_process_reply(struct rpc_context *rpc, struct rpc_pdu *pdu, ZDR *zdr)
{
	struct rpc_msg msg;

	assert(rpc->magic == RPC_CONTEXT_MAGIC);

	memset(&msg, 0, sizeof(struct rpc_msg));
	msg.body.rbody.reply.areply.verf = _null_auth;
	if (pdu->zdr_decode_bufsize > 0) {
		if (pdu->zdr_decode_buf != NULL) {
			free(pdu->zdr_decode_buf);
		}
		pdu->zdr_decode_buf = malloc(pdu->zdr_decode_bufsize);
		if (pdu->zdr_decode_buf == NULL) {
			rpc_set_error(rpc, "zdr_replymsg failed in portmap_getport_reply");
			pdu->cb(rpc, RPC_STATUS_ERROR, "Failed to allocate buffer for decoding of ZDR reply", pdu->private_data);
			return 0;
		}
		memset(pdu->zdr_decode_buf, 0, pdu->zdr_decode_bufsize);
	}
	msg.body.rbody.reply.areply.reply_data.results.where = pdu->zdr_decode_buf;
	msg.body.rbody.reply.areply.reply_data.results.proc  = pdu->zdr_decode_fn;

	if (zdr_replymsg(zdr, &msg) == 0) {
		rpc_set_error(rpc, "zdr_replymsg failed in portmap_getport_reply");
		pdu->cb(rpc, RPC_STATUS_ERROR, "Message rejected by server", pdu->private_data);
		if (pdu->zdr_decode_buf != NULL) {
			free(pdu->zdr_decode_buf);
			pdu->zdr_decode_buf = NULL;
		}
		return 0;
	}
	if (msg.body.rbody.stat != MSG_ACCEPTED) {
		pdu->cb(rpc, RPC_STATUS_ERROR, "RPC Packet not accepted by the server", pdu->private_data);
		return 0;
	}
	switch (msg.body.rbody.reply.areply.stat) {
	case SUCCESS:
		pdu->cb(rpc, RPC_STATUS_SUCCESS, pdu->zdr_decode_buf, pdu->private_data);
		break;
	case PROG_UNAVAIL:
		pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Program not available", pdu->private_data);
		break;
	case PROG_MISMATCH:
		pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Program version mismatch", pdu->private_data);
		break;
	case PROC_UNAVAIL:
		pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Procedure not available", pdu->private_data);
		break;
	case GARBAGE_ARGS:
		pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Garbage arguments", pdu->private_data);
		break;
	case SYSTEM_ERR:
		pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: System Error", pdu->private_data);
		break;
	default:
		pdu->cb(rpc, RPC_STATUS_ERROR, "Unknown rpc response from server", pdu->private_data);
		break;
	}

	return 0;
}

int rpc_process_pdu(struct rpc_context *rpc, char *buf, int size)
{
	struct rpc_pdu *pdu;
	ZDR zdr;
	int pos, recordmarker = 0;
	unsigned int xid;
	char *reasbuf = NULL;

	assert(rpc->magic == RPC_CONTEXT_MAGIC);

	memset(&zdr, 0, sizeof(ZDR));

	zdrmem_create(&zdr, buf, size, ZDR_DECODE);
	if (rpc->is_udp == 0) {
		if (zdr_int(&zdr, &recordmarker) == 0) {
			rpc_set_error(rpc, "zdr_int reading recordmarker failed");
			zdr_destroy(&zdr);
			return -1;
		}
		if (!(recordmarker&0x80000000)) {
			zdr_destroy(&zdr);
			if (rpc_add_fragment(rpc, buf+4, size-4) != 0) {
				rpc_set_error(rpc, "Failed to queue fragment for reassembly.");
				return -1;
			}
			return 0;
		}
	}

	/* reassembly */
	if (recordmarker != 0 && rpc->fragments != NULL) {
		struct rpc_fragment *fragment;
		uint32_t total = size - 4;
		char *ptr;

		zdr_destroy(&zdr);
		for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
			total += fragment->size;
		}

		reasbuf = malloc(total);
		if (reasbuf == NULL) {
			rpc_set_error(rpc, "Failed to reassemble PDU");
			rpc_free_all_fragments(rpc);
			return -1;
		}
		ptr = reasbuf;
		for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
			memcpy(ptr, fragment->data, fragment->size);
			ptr += fragment->size;
		}
		memcpy(ptr, buf + 4, size - 4);
		zdrmem_create(&zdr, reasbuf, total, ZDR_DECODE);
		rpc_free_all_fragments(rpc);
	}

	pos = zdr_getpos(&zdr);
	if (zdr_int(&zdr, (int *)&xid) == 0) {
		rpc_set_error(rpc, "zdr_int reading xid failed");
		zdr_destroy(&zdr);
		if (reasbuf != NULL) {
			free(reasbuf);
		}
		return -1;
	}
	zdr_setpos(&zdr, pos);

	for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) {
		if (pdu->xid != xid) {
			continue;
		}
		if (rpc->is_udp == 0 || rpc->is_broadcast == 0) {
			SLIST_REMOVE(&rpc->waitpdu, pdu);
		}
		if (rpc_process_reply(rpc, pdu, &zdr) != 0) {
			rpc_set_error(rpc, "rpc_procdess_reply failed");
		}
		zdr_destroy(&zdr);
		if (rpc->is_udp == 0 || rpc->is_broadcast == 0) {
			rpc_free_pdu(rpc, pdu);
		}
		if (reasbuf != NULL) {
			free(reasbuf);
		}
		return 0;
	}
	rpc_set_error(rpc, "No matching pdu found for xid:%d", xid);
	zdr_destroy(&zdr);
	if (reasbuf != NULL) {
		free(reasbuf);
	}
	return -1;
}
Commit	Line	Data
84004dbf RS	1	/*
	2	Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
	3
	4	This program is free software; you can redistribute it and/or modify
	5	it under the terms of the GNU Lesser General Public License as published by
	6	the Free Software Foundation; either version 2.1 of the License, or
	7	(at your option) any later version.
	8
	9	This program is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	GNU Lesser General Public License for more details.
	13
	14	You should have received a copy of the GNU Lesser General Public License
	15	along with this program; if not, see <http://www.gnu.org/licenses/>.
	16	*/
108c622a RS	17	#ifdef AROS
	18	#include "aros_compat.h"
	19	#endif
	20
a8a1b858 M	21	#ifdef WIN32
a8a1b858 M	22	#include "win32_compat.h"
6874f61e	23	#else
84004dbf	24	#include <strings.h>
a8a1b858	25	#endif/WIN32/
6874f61e RS	26
6874f61e RS	27	#include <stdio.h>
98f5fee8	28	#include <stdlib.h>
763cd6e3 RS	29	#include <string.h>
	30	#include <sys/socket.h>
	31	#include <netinet/in.h>
f3a75078	32	#include <assert.h>
a669857d	33	#include <errno.h>
84004dbf	34	#include "slist.h"
763cd6e3	35	#include "libnfs-zdr.h"
84004dbf RS	36	#include "libnfs.h"
	37	#include "libnfs-raw.h"
	38	#include "libnfs-private.h"
	39
763cd6e3	40	struct rpc_pdu rpc_allocate_pdu(struct rpc_context rpc, int program, int version, int procedure, rpc_cb cb, void *private_data, zdrproc_t zdr_decode_fn, int zdr_decode_bufsize)
84004dbf RS	41	{
	42	struct rpc_pdu *pdu;
	43	struct rpc_msg msg;
	44
f3a75078	45	assert(rpc->magic == RPC_CONTEXT_MAGIC);
84004dbf RS	46
	47	pdu = malloc(sizeof(struct rpc_pdu));
	48	if (pdu == NULL) {
1896d37b	49	rpc_set_error(rpc, "Out of memory: Failed to allocate pdu structure");
84004dbf RS	50	return NULL;
84004dbf RS	51	}
ea98629a	52	memset(pdu, 0, sizeof(struct rpc_pdu));
84004dbf RS	53	pdu->xid = rpc->xid++;
	54	pdu->cb = cb;
	55	pdu->private_data = private_data;
763cd6e3 RS	56	pdu->zdr_decode_fn = zdr_decode_fn;
763cd6e3 RS	57	pdu->zdr_decode_bufsize = zdr_decode_bufsize;
84004dbf	58
763cd6e3	59	zdrmem_create(&pdu->zdr, rpc->encodebuf, rpc->encodebuflen, ZDR_ENCODE);
a1992412	60	if (rpc->is_udp == 0) {
763cd6e3	61	zdr_setpos(&pdu->zdr, 4); /* skip past the record marker */
a1992412	62	}
84004dbf	63
ea98629a	64	memset(&msg, 0, sizeof(struct rpc_msg));
aab6538b RS	65	msg.xid = pdu->xid;
	66	msg.direction = CALL;
	67	msg.body.cbody.rpcvers = RPC_MSG_VERSION;
	68	msg.body.cbody.prog = program;
	69	msg.body.cbody.vers = version;
	70	msg.body.cbody.proc = procedure;
	71	msg.body.cbody.cred = rpc->auth->ah_cred;
	72	msg.body.cbody.verf = rpc->auth->ah_verf;
84004dbf	73
763cd6e3 RS	74	if (zdr_callmsg(&pdu->zdr, &msg) == 0) {
	75	rpc_set_error(rpc, "zdr_callmsg failed");
	76	zdr_destroy(&pdu->zdr);
84004dbf RS	77	free(pdu);
	78	return NULL;
	79	}
	80
	81	return pdu;
	82	}
	83
f3a75078	84	void rpc_free_pdu(struct rpc_context rpc, struct rpc_pdu pdu)
84004dbf	85	{
f3a75078 RS	86	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	87
84004dbf RS	88	if (pdu->outdata.data != NULL) {
	89	free(pdu->outdata.data);
	90	pdu->outdata.data = NULL;
	91	}
	92
763cd6e3 RS	93	if (pdu->zdr_decode_buf != NULL) {
	94	zdr_free(pdu->zdr_decode_fn, pdu->zdr_decode_buf);
	95	free(pdu->zdr_decode_buf);
	96	pdu->zdr_decode_buf = NULL;
84004dbf RS	97	}
84004dbf RS	98
763cd6e3	99	zdr_destroy(&pdu->zdr);
df5af25f	100
84004dbf RS	101	free(pdu);
	102	}
	103
	104
	105	int rpc_queue_pdu(struct rpc_context rpc, struct rpc_pdu pdu)
	106	{
	107	int size, recordmarker;
	108
f3a75078 RS	109	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	110
763cd6e3	111	size = zdr_getpos(&pdu->zdr);
84004dbf	112
a669857d RS	113	/* for udp we dont queue, we just send it straight away */
a669857d RS	114	if (rpc->is_udp != 0) {
763cd6e3	115	// XXX add a rpc->udp_dest_sock_size and get rid of sys/socket.h and netinet/in.h
a669857d RS	116	if (sendto(rpc->fd, rpc->encodebuf, size, MSG_DONTWAIT, rpc->udp_dest, sizeof(struct sockaddr_in)) < 0) {
	117	rpc_set_error(rpc, "Sendto failed with errno %s", strerror(errno));
	118	rpc_free_pdu(rpc, pdu);
	119	return -1;
	120	}
	121	SLIST_ADD_END(&rpc->waitpdu, pdu);
	122	return 0;
	123	}
	124
84004dbf	125	/* write recordmarker */
763cd6e3	126	zdr_setpos(&pdu->zdr, 0);
84004dbf	127	recordmarker = (size - 4) \| 0x80000000;
763cd6e3	128	zdr_int(&pdu->zdr, &recordmarker);
84004dbf RS	129
	130	pdu->outdata.size = size;
	131	pdu->outdata.data = malloc(pdu->outdata.size);
	132	if (pdu->outdata.data == NULL) {
	133	rpc_set_error(rpc, "Out of memory. Failed to allocate buffer for pdu\n");
	134	rpc_free_pdu(rpc, pdu);
	135	return -1;
	136	}
	137
	138	memcpy(pdu->outdata.data, rpc->encodebuf, pdu->outdata.size);
	139	SLIST_ADD_END(&rpc->outqueue, pdu);
	140
	141	return 0;
	142	}
	143
	144	int rpc_get_pdu_size(char *buf)
	145	{
	146	uint32_t size;
	147
	148	size = ntohl((uint32_t )buf);
	149
84004dbf RS	150	return (size & 0x7fffffff) + 4;
	151	}
	152
763cd6e3	153	static int rpc_process_reply(struct rpc_context rpc, struct rpc_pdu pdu, ZDR *zdr)
84004dbf RS	154	{
	155	struct rpc_msg msg;
	156
f3a75078 RS	157	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	158
ea98629a	159	memset(&msg, 0, sizeof(struct rpc_msg));
aab6538b	160	msg.body.rbody.reply.areply.verf = _null_auth;
763cd6e3 RS	161	if (pdu->zdr_decode_bufsize > 0) {
	162	if (pdu->zdr_decode_buf != NULL) {
	163	free(pdu->zdr_decode_buf);
1b9917b8	164	}
763cd6e3 RS	165	pdu->zdr_decode_buf = malloc(pdu->zdr_decode_bufsize);
	166	if (pdu->zdr_decode_buf == NULL) {
	167	rpc_set_error(rpc, "zdr_replymsg failed in portmap_getport_reply");
	168	pdu->cb(rpc, RPC_STATUS_ERROR, "Failed to allocate buffer for decoding of ZDR reply", pdu->private_data);
84004dbf RS	169	return 0;
84004dbf RS	170	}
763cd6e3	171	memset(pdu->zdr_decode_buf, 0, pdu->zdr_decode_bufsize);
84004dbf	172	}
aab6538b RS	173	msg.body.rbody.reply.areply.reply_data.results.where = pdu->zdr_decode_buf;
aab6538b RS	174	msg.body.rbody.reply.areply.reply_data.results.proc = pdu->zdr_decode_fn;
84004dbf	175
763cd6e3 RS	176	if (zdr_replymsg(zdr, &msg) == 0) {
763cd6e3 RS	177	rpc_set_error(rpc, "zdr_replymsg failed in portmap_getport_reply");
84004dbf	178	pdu->cb(rpc, RPC_STATUS_ERROR, "Message rejected by server", pdu->private_data);
763cd6e3 RS	179	if (pdu->zdr_decode_buf != NULL) {
	180	free(pdu->zdr_decode_buf);
	181	pdu->zdr_decode_buf = NULL;
84004dbf RS	182	}
	183	return 0;
	184	}
aab6538b	185	if (msg.body.rbody.stat != MSG_ACCEPTED) {
84004dbf RS	186	pdu->cb(rpc, RPC_STATUS_ERROR, "RPC Packet not accepted by the server", pdu->private_data);
	187	return 0;
	188	}
aab6538b	189	switch (msg.body.rbody.reply.areply.stat) {
84004dbf	190	case SUCCESS:
763cd6e3	191	pdu->cb(rpc, RPC_STATUS_SUCCESS, pdu->zdr_decode_buf, pdu->private_data);
84004dbf RS	192	break;
	193	case PROG_UNAVAIL:
	194	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Program not available", pdu->private_data);
	195	break;
	196	case PROG_MISMATCH:
	197	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Program version mismatch", pdu->private_data);
	198	break;
	199	case PROC_UNAVAIL:
	200	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Procedure not available", pdu->private_data);
	201	break;
	202	case GARBAGE_ARGS:
	203	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Garbage arguments", pdu->private_data);
	204	break;
	205	case SYSTEM_ERR:
	206	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: System Error", pdu->private_data);
	207	break;
	208	default:
	209	pdu->cb(rpc, RPC_STATUS_ERROR, "Unknown rpc response from server", pdu->private_data);
	210	break;
	211	}
	212
	213	return 0;
	214	}
	215
	216	int rpc_process_pdu(struct rpc_context rpc, char buf, int size)
	217	{
	218	struct rpc_pdu *pdu;
763cd6e3	219	ZDR zdr;
d678b73e	220	int pos, recordmarker = 0;
84004dbf	221	unsigned int xid;
d678b73e	222	char *reasbuf = NULL;
84004dbf	223
f3a75078 RS	224	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	225
763cd6e3	226	memset(&zdr, 0, sizeof(ZDR));
84004dbf	227
763cd6e3	228	zdrmem_create(&zdr, buf, size, ZDR_DECODE);
a669857d	229	if (rpc->is_udp == 0) {
763cd6e3 RS	230	if (zdr_int(&zdr, &recordmarker) == 0) {
	231	rpc_set_error(rpc, "zdr_int reading recordmarker failed");
	232	zdr_destroy(&zdr);
a669857d RS	233	return -1;
a669857d RS	234	}
d678b73e	235	if (!(recordmarker&0x80000000)) {
763cd6e3	236	zdr_destroy(&zdr);
d678b73e RS	237	if (rpc_add_fragment(rpc, buf+4, size-4) != 0) {
	238	rpc_set_error(rpc, "Failed to queue fragment for reassembly.");
	239	return -1;
	240	}
	241	return 0;
	242	}
84004dbf	243	}
d678b73e RS	244
	245	/* reassembly */
	246	if (recordmarker != 0 && rpc->fragments != NULL) {
	247	struct rpc_fragment *fragment;
574095b9	248	uint32_t total = size - 4;
d678b73e RS	249	char *ptr;
d678b73e RS	250
763cd6e3	251	zdr_destroy(&zdr);
d678b73e RS	252	for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
	253	total += fragment->size;
	254	}
	255
	256	reasbuf = malloc(total);
	257	if (reasbuf == NULL) {
	258	rpc_set_error(rpc, "Failed to reassemble PDU");
	259	rpc_free_all_fragments(rpc);
	260	return -1;
	261	}
	262	ptr = reasbuf;
	263	for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
	264	memcpy(ptr, fragment->data, fragment->size);
	265	ptr += fragment->size;
	266	}
	267	memcpy(ptr, buf + 4, size - 4);
763cd6e3	268	zdrmem_create(&zdr, reasbuf, total, ZDR_DECODE);
d678b73e RS	269	rpc_free_all_fragments(rpc);
	270	}
	271
763cd6e3 RS	272	pos = zdr_getpos(&zdr);
	273	if (zdr_int(&zdr, (int *)&xid) == 0) {
	274	rpc_set_error(rpc, "zdr_int reading xid failed");
	275	zdr_destroy(&zdr);
d678b73e RS	276	if (reasbuf != NULL) {
	277	free(reasbuf);
	278	}
84004dbf RS	279	return -1;
84004dbf RS	280	}
763cd6e3	281	zdr_setpos(&zdr, pos);
84004dbf RS	282
	283	for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) {
	284	if (pdu->xid != xid) {
	285	continue;
	286	}
a669857d RS	287	if (rpc->is_udp == 0 \|\| rpc->is_broadcast == 0) {
	288	SLIST_REMOVE(&rpc->waitpdu, pdu);
	289	}
763cd6e3	290	if (rpc_process_reply(rpc, pdu, &zdr) != 0) {
1896d37b	291	rpc_set_error(rpc, "rpc_procdess_reply failed");
84004dbf	292	}
763cd6e3	293	zdr_destroy(&zdr);
a669857d RS	294	if (rpc->is_udp == 0 \|\| rpc->is_broadcast == 0) {
	295	rpc_free_pdu(rpc, pdu);
	296	}
d678b73e RS	297	if (reasbuf != NULL) {
	298	free(reasbuf);
	299	}
84004dbf RS	300	return 0;
84004dbf RS	301	}
1896d37b	302	rpc_set_error(rpc, "No matching pdu found for xid:%d", xid);
763cd6e3	303	zdr_destroy(&zdr);
d678b73e RS	304	if (reasbuf != NULL) {
	305	free(reasbuf);
	306	}
84004dbf RS	307	return -1;
	308	}
	309