[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 HAVE_CONFIG_H
#include "config.h"
#endif

#ifdef AROS
#include "aros_compat.h"
#endif

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

#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.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	*/
72897005 RS	17	#ifdef HAVE_CONFIG_H
	18	#include "config.h"
	19	#endif
	20
108c622a RS	21	#ifdef AROS
	22	#include "aros_compat.h"
	23	#endif
	24
a8a1b858 M	25	#ifdef WIN32
a8a1b858 M	26	#include "win32_compat.h"
6874f61e	27	#else
84004dbf	28	#include <strings.h>
67a9f57e	29	#include <sys/socket.h>
a8a1b858	30	#endif/WIN32/
6874f61e	31
72897005 RS	32	#ifdef HAVE_NETINET_IN_H
	33	#include <netinet/in.h>
	34	#endif
	35
6874f61e	36	#include <stdio.h>
98f5fee8	37	#include <stdlib.h>
763cd6e3	38	#include <string.h>
f3a75078	39	#include <assert.h>
a669857d	40	#include <errno.h>
84004dbf	41	#include "slist.h"
763cd6e3	42	#include "libnfs-zdr.h"
84004dbf RS	43	#include "libnfs.h"
	44	#include "libnfs-raw.h"
	45	#include "libnfs-private.h"
	46
763cd6e3	47	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	48	{
	49	struct rpc_pdu *pdu;
	50	struct rpc_msg msg;
	51
f3a75078	52	assert(rpc->magic == RPC_CONTEXT_MAGIC);
84004dbf RS	53
	54	pdu = malloc(sizeof(struct rpc_pdu));
	55	if (pdu == NULL) {
1896d37b	56	rpc_set_error(rpc, "Out of memory: Failed to allocate pdu structure");
84004dbf RS	57	return NULL;
84004dbf RS	58	}
ea98629a	59	memset(pdu, 0, sizeof(struct rpc_pdu));
84004dbf RS	60	pdu->xid = rpc->xid++;
	61	pdu->cb = cb;
	62	pdu->private_data = private_data;
763cd6e3 RS	63	pdu->zdr_decode_fn = zdr_decode_fn;
763cd6e3 RS	64	pdu->zdr_decode_bufsize = zdr_decode_bufsize;
84004dbf	65
763cd6e3	66	zdrmem_create(&pdu->zdr, rpc->encodebuf, rpc->encodebuflen, ZDR_ENCODE);
a1992412	67	if (rpc->is_udp == 0) {
763cd6e3	68	zdr_setpos(&pdu->zdr, 4); /* skip past the record marker */
a1992412	69	}
84004dbf	70
ea98629a	71	memset(&msg, 0, sizeof(struct rpc_msg));
aab6538b RS	72	msg.xid = pdu->xid;
	73	msg.direction = CALL;
	74	msg.body.cbody.rpcvers = RPC_MSG_VERSION;
	75	msg.body.cbody.prog = program;
	76	msg.body.cbody.vers = version;
	77	msg.body.cbody.proc = procedure;
	78	msg.body.cbody.cred = rpc->auth->ah_cred;
	79	msg.body.cbody.verf = rpc->auth->ah_verf;
84004dbf	80
763cd6e3 RS	81	if (zdr_callmsg(&pdu->zdr, &msg) == 0) {
	82	rpc_set_error(rpc, "zdr_callmsg failed");
	83	zdr_destroy(&pdu->zdr);
84004dbf RS	84	free(pdu);
	85	return NULL;
	86	}
	87
	88	return pdu;
	89	}
	90
f3a75078	91	void rpc_free_pdu(struct rpc_context rpc, struct rpc_pdu pdu)
84004dbf	92	{
f3a75078 RS	93	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	94
84004dbf RS	95	if (pdu->outdata.data != NULL) {
	96	free(pdu->outdata.data);
	97	pdu->outdata.data = NULL;
	98	}
	99
763cd6e3 RS	100	if (pdu->zdr_decode_buf != NULL) {
	101	zdr_free(pdu->zdr_decode_fn, pdu->zdr_decode_buf);
	102	free(pdu->zdr_decode_buf);
	103	pdu->zdr_decode_buf = NULL;
84004dbf RS	104	}
84004dbf RS	105
763cd6e3	106	zdr_destroy(&pdu->zdr);
df5af25f	107
84004dbf RS	108	free(pdu);
	109	}
	110
	111
	112	int rpc_queue_pdu(struct rpc_context rpc, struct rpc_pdu pdu)
	113	{
	114	int size, recordmarker;
	115
f3a75078 RS	116	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	117
763cd6e3	118	size = zdr_getpos(&pdu->zdr);
84004dbf	119
a669857d RS	120	/* for udp we dont queue, we just send it straight away */
a669857d RS	121	if (rpc->is_udp != 0) {
763cd6e3	122	// XXX add a rpc->udp_dest_sock_size and get rid of sys/socket.h and netinet/in.h
a669857d RS	123	if (sendto(rpc->fd, rpc->encodebuf, size, MSG_DONTWAIT, rpc->udp_dest, sizeof(struct sockaddr_in)) < 0) {
	124	rpc_set_error(rpc, "Sendto failed with errno %s", strerror(errno));
	125	rpc_free_pdu(rpc, pdu);
	126	return -1;
	127	}
	128	SLIST_ADD_END(&rpc->waitpdu, pdu);
	129	return 0;
	130	}
	131
84004dbf	132	/* write recordmarker */
763cd6e3	133	zdr_setpos(&pdu->zdr, 0);
84004dbf	134	recordmarker = (size - 4) \| 0x80000000;
763cd6e3	135	zdr_int(&pdu->zdr, &recordmarker);
84004dbf RS	136
	137	pdu->outdata.size = size;
	138	pdu->outdata.data = malloc(pdu->outdata.size);
	139	if (pdu->outdata.data == NULL) {
	140	rpc_set_error(rpc, "Out of memory. Failed to allocate buffer for pdu\n");
	141	rpc_free_pdu(rpc, pdu);
	142	return -1;
	143	}
	144
	145	memcpy(pdu->outdata.data, rpc->encodebuf, pdu->outdata.size);
	146	SLIST_ADD_END(&rpc->outqueue, pdu);
	147
	148	return 0;
	149	}
	150
	151	int rpc_get_pdu_size(char *buf)
	152	{
	153	uint32_t size;
	154
	155	size = ntohl((uint32_t )buf);
	156
84004dbf RS	157	return (size & 0x7fffffff) + 4;
	158	}
	159
763cd6e3	160	static int rpc_process_reply(struct rpc_context rpc, struct rpc_pdu pdu, ZDR *zdr)
84004dbf RS	161	{
	162	struct rpc_msg msg;
	163
f3a75078 RS	164	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	165
ea98629a	166	memset(&msg, 0, sizeof(struct rpc_msg));
aab6538b	167	msg.body.rbody.reply.areply.verf = _null_auth;
763cd6e3 RS	168	if (pdu->zdr_decode_bufsize > 0) {
	169	if (pdu->zdr_decode_buf != NULL) {
	170	free(pdu->zdr_decode_buf);
1b9917b8	171	}
763cd6e3 RS	172	pdu->zdr_decode_buf = malloc(pdu->zdr_decode_bufsize);
	173	if (pdu->zdr_decode_buf == NULL) {
	174	rpc_set_error(rpc, "zdr_replymsg failed in portmap_getport_reply");
	175	pdu->cb(rpc, RPC_STATUS_ERROR, "Failed to allocate buffer for decoding of ZDR reply", pdu->private_data);
84004dbf RS	176	return 0;
84004dbf RS	177	}
763cd6e3	178	memset(pdu->zdr_decode_buf, 0, pdu->zdr_decode_bufsize);
84004dbf	179	}
aab6538b RS	180	msg.body.rbody.reply.areply.reply_data.results.where = pdu->zdr_decode_buf;
aab6538b RS	181	msg.body.rbody.reply.areply.reply_data.results.proc = pdu->zdr_decode_fn;
84004dbf	182
763cd6e3 RS	183	if (zdr_replymsg(zdr, &msg) == 0) {
763cd6e3 RS	184	rpc_set_error(rpc, "zdr_replymsg failed in portmap_getport_reply");
84004dbf	185	pdu->cb(rpc, RPC_STATUS_ERROR, "Message rejected by server", pdu->private_data);
763cd6e3 RS	186	if (pdu->zdr_decode_buf != NULL) {
	187	free(pdu->zdr_decode_buf);
	188	pdu->zdr_decode_buf = NULL;
84004dbf RS	189	}
	190	return 0;
	191	}
aab6538b	192	if (msg.body.rbody.stat != MSG_ACCEPTED) {
84004dbf RS	193	pdu->cb(rpc, RPC_STATUS_ERROR, "RPC Packet not accepted by the server", pdu->private_data);
	194	return 0;
	195	}
aab6538b	196	switch (msg.body.rbody.reply.areply.stat) {
84004dbf	197	case SUCCESS:
763cd6e3	198	pdu->cb(rpc, RPC_STATUS_SUCCESS, pdu->zdr_decode_buf, pdu->private_data);
84004dbf RS	199	break;
	200	case PROG_UNAVAIL:
	201	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Program not available", pdu->private_data);
	202	break;
	203	case PROG_MISMATCH:
	204	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Program version mismatch", pdu->private_data);
	205	break;
	206	case PROC_UNAVAIL:
	207	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Procedure not available", pdu->private_data);
	208	break;
	209	case GARBAGE_ARGS:
	210	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Garbage arguments", pdu->private_data);
	211	break;
	212	case SYSTEM_ERR:
	213	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: System Error", pdu->private_data);
	214	break;
	215	default:
	216	pdu->cb(rpc, RPC_STATUS_ERROR, "Unknown rpc response from server", pdu->private_data);
	217	break;
	218	}
	219
	220	return 0;
	221	}
	222
	223	int rpc_process_pdu(struct rpc_context rpc, char buf, int size)
	224	{
	225	struct rpc_pdu *pdu;
763cd6e3	226	ZDR zdr;
d678b73e	227	int pos, recordmarker = 0;
84004dbf	228	unsigned int xid;
d678b73e	229	char *reasbuf = NULL;
84004dbf	230
f3a75078 RS	231	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	232
763cd6e3	233	memset(&zdr, 0, sizeof(ZDR));
84004dbf	234
763cd6e3	235	zdrmem_create(&zdr, buf, size, ZDR_DECODE);
a669857d	236	if (rpc->is_udp == 0) {
763cd6e3 RS	237	if (zdr_int(&zdr, &recordmarker) == 0) {
	238	rpc_set_error(rpc, "zdr_int reading recordmarker failed");
	239	zdr_destroy(&zdr);
a669857d RS	240	return -1;
a669857d RS	241	}
d678b73e	242	if (!(recordmarker&0x80000000)) {
763cd6e3	243	zdr_destroy(&zdr);
d678b73e RS	244	if (rpc_add_fragment(rpc, buf+4, size-4) != 0) {
	245	rpc_set_error(rpc, "Failed to queue fragment for reassembly.");
	246	return -1;
	247	}
	248	return 0;
	249	}
84004dbf	250	}
d678b73e RS	251
	252	/* reassembly */
	253	if (recordmarker != 0 && rpc->fragments != NULL) {
	254	struct rpc_fragment *fragment;
574095b9	255	uint32_t total = size - 4;
d678b73e RS	256	char *ptr;
d678b73e RS	257
763cd6e3	258	zdr_destroy(&zdr);
d678b73e RS	259	for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
	260	total += fragment->size;
	261	}
	262
	263	reasbuf = malloc(total);
	264	if (reasbuf == NULL) {
	265	rpc_set_error(rpc, "Failed to reassemble PDU");
	266	rpc_free_all_fragments(rpc);
	267	return -1;
	268	}
	269	ptr = reasbuf;
	270	for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
	271	memcpy(ptr, fragment->data, fragment->size);
	272	ptr += fragment->size;
	273	}
	274	memcpy(ptr, buf + 4, size - 4);
763cd6e3	275	zdrmem_create(&zdr, reasbuf, total, ZDR_DECODE);
d678b73e RS	276	rpc_free_all_fragments(rpc);
	277	}
	278
763cd6e3 RS	279	pos = zdr_getpos(&zdr);
	280	if (zdr_int(&zdr, (int *)&xid) == 0) {
	281	rpc_set_error(rpc, "zdr_int reading xid failed");
	282	zdr_destroy(&zdr);
d678b73e RS	283	if (reasbuf != NULL) {
	284	free(reasbuf);
	285	}
84004dbf RS	286	return -1;
84004dbf RS	287	}
763cd6e3	288	zdr_setpos(&zdr, pos);
84004dbf RS	289
	290	for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) {
	291	if (pdu->xid != xid) {
	292	continue;
	293	}
a669857d RS	294	if (rpc->is_udp == 0 \|\| rpc->is_broadcast == 0) {
	295	SLIST_REMOVE(&rpc->waitpdu, pdu);
	296	}
763cd6e3	297	if (rpc_process_reply(rpc, pdu, &zdr) != 0) {
1896d37b	298	rpc_set_error(rpc, "rpc_procdess_reply failed");
84004dbf	299	}
763cd6e3	300	zdr_destroy(&zdr);
a669857d RS	301	if (rpc->is_udp == 0 \|\| rpc->is_broadcast == 0) {
	302	rpc_free_pdu(rpc, pdu);
	303	}
d678b73e RS	304	if (reasbuf != NULL) {
	305	free(reasbuf);
	306	}
84004dbf RS	307	return 0;
84004dbf RS	308	}
1896d37b	309	rpc_set_error(rpc, "No matching pdu found for xid:%d", xid);
763cd6e3	310	zdr_destroy(&zdr);
d678b73e RS	311	if (reasbuf != NULL) {
	312	free(reasbuf);
	313	}
84004dbf RS	314	return -1;
	315	}
	316