[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"
#endif

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

#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif

#ifdef HAVE_STRINGS_H
#include <strings.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(rpc, &pdu->zdr, &msg) == 0) {
		rpc_set_error(rpc, "zdr_callmsg failed with %s",
			      rpc_get_error(rpc));
		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);
}

void rpc_set_next_xid(struct rpc_context *rpc, uint32_t xid)
{
	rpc->xid = xid;
}

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, "Failed to allocate memory for "
				      "zdr_encode_buf in rpc_process_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(rpc, zdr, &msg) == 0) {
		rpc_set_error(rpc, "zdr_replymsg failed in rpc_process_reply: "
			      "%s", rpc_get_error(rpc));
		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;
	uint32_t 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
dabf4152 AM	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	*/
ee872606 RRS	17	#ifdef HAVE_CONFIG_H
	18	#include "config.h"
	19	#endif
	20
	21	#ifdef AROS
	22	#include "aros_compat.h"
	23	#endif
	24
5670ec6e AM	25	#ifdef WIN32
5670ec6e AM	26	#include "win32_compat.h"
5670ec6e	27	#endif
ee872606 RRS	28
	29	#ifdef HAVE_NETINET_IN_H
	30	#include <netinet/in.h>
	31	#endif
	32
	33	#ifdef HAVE_SYS_SOCKET_H
	34	#include <sys/socket.h>
	35	#endif
	36
	37	#ifdef HAVE_STRINGS_H
5670ec6e	38	#include <strings.h>
ee872606	39	#endif
dabf4152 AM	40
dabf4152 AM	41	#include <stdio.h>
dabf4152	42	#include <stdlib.h>
ee872606 RRS	43	#include <string.h>
ee872606 RRS	44	#include <assert.h>
dabf4152	45	#include <errno.h>
dabf4152	46	#include "slist.h"
ee872606	47	#include "libnfs-zdr.h"
dabf4152 AM	48	#include "libnfs.h"
	49	#include "libnfs-raw.h"
	50	#include "libnfs-private.h"
	51
ee872606	52	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)
dabf4152 AM	53	{
	54	struct rpc_pdu *pdu;
	55	struct rpc_msg msg;
	56
ee872606	57	assert(rpc->magic == RPC_CONTEXT_MAGIC);
dabf4152 AM	58
	59	pdu = malloc(sizeof(struct rpc_pdu));
	60	if (pdu == NULL) {
	61	rpc_set_error(rpc, "Out of memory: Failed to allocate pdu structure");
	62	return NULL;
	63	}
5670ec6e	64	memset(pdu, 0, sizeof(struct rpc_pdu));
dabf4152 AM	65	pdu->xid = rpc->xid++;
	66	pdu->cb = cb;
	67	pdu->private_data = private_data;
ee872606 RRS	68	pdu->zdr_decode_fn = zdr_decode_fn;
ee872606 RRS	69	pdu->zdr_decode_bufsize = zdr_decode_bufsize;
dabf4152	70
ee872606	71	zdrmem_create(&pdu->zdr, rpc->encodebuf, rpc->encodebuflen, ZDR_ENCODE);
dabf4152	72	if (rpc->is_udp == 0) {
ee872606	73	zdr_setpos(&pdu->zdr, 4); /* skip past the record marker */
dabf4152 AM	74	}
dabf4152 AM	75
5670ec6e	76	memset(&msg, 0, sizeof(struct rpc_msg));
ee872606 RRS	77	msg.xid = pdu->xid;
	78	msg.direction = CALL;
	79	msg.body.cbody.rpcvers = RPC_MSG_VERSION;
	80	msg.body.cbody.prog = program;
	81	msg.body.cbody.vers = version;
	82	msg.body.cbody.proc = procedure;
	83	msg.body.cbody.cred = rpc->auth->ah_cred;
	84	msg.body.cbody.verf = rpc->auth->ah_verf;
	85
	86	if (zdr_callmsg(rpc, &pdu->zdr, &msg) == 0) {
	87	rpc_set_error(rpc, "zdr_callmsg failed with %s",
	88	rpc_get_error(rpc));
	89	zdr_destroy(&pdu->zdr);
dabf4152 AM	90	free(pdu);
	91	return NULL;
	92	}
	93
	94	return pdu;
	95	}
	96
ee872606	97	void rpc_free_pdu(struct rpc_context rpc, struct rpc_pdu pdu)
dabf4152	98	{
ee872606 RRS	99	assert(rpc->magic == RPC_CONTEXT_MAGIC);
ee872606 RRS	100
dabf4152 AM	101	if (pdu->outdata.data != NULL) {
	102	free(pdu->outdata.data);
	103	pdu->outdata.data = NULL;
	104	}
	105
ee872606 RRS	106	if (pdu->zdr_decode_buf != NULL) {
	107	zdr_free(pdu->zdr_decode_fn, pdu->zdr_decode_buf);
	108	free(pdu->zdr_decode_buf);
	109	pdu->zdr_decode_buf = NULL;
dabf4152 AM	110	}
dabf4152 AM	111
ee872606	112	zdr_destroy(&pdu->zdr);
dabf4152 AM	113
	114	free(pdu);
	115	}
	116
ee872606 RRS	117	void rpc_set_next_xid(struct rpc_context *rpc, uint32_t xid)
	118	{
	119	rpc->xid = xid;
	120	}
dabf4152 AM	121
	122	int rpc_queue_pdu(struct rpc_context rpc, struct rpc_pdu pdu)
	123	{
	124	int size, recordmarker;
	125
ee872606 RRS	126	assert(rpc->magic == RPC_CONTEXT_MAGIC);
	127
	128	size = zdr_getpos(&pdu->zdr);
dabf4152 AM	129
	130	/* for udp we dont queue, we just send it straight away */
	131	if (rpc->is_udp != 0) {
ee872606	132	// XXX add a rpc->udp_dest_sock_size and get rid of sys/socket.h and netinet/in.h
dabf4152 AM	133	if (sendto(rpc->fd, rpc->encodebuf, size, MSG_DONTWAIT, rpc->udp_dest, sizeof(struct sockaddr_in)) < 0) {
	134	rpc_set_error(rpc, "Sendto failed with errno %s", strerror(errno));
	135	rpc_free_pdu(rpc, pdu);
	136	return -1;
	137	}
	138	SLIST_ADD_END(&rpc->waitpdu, pdu);
	139	return 0;
	140	}
	141
	142	/* write recordmarker */
ee872606	143	zdr_setpos(&pdu->zdr, 0);
dabf4152	144	recordmarker = (size - 4) \| 0x80000000;
ee872606	145	zdr_int(&pdu->zdr, &recordmarker);
dabf4152 AM	146
	147	pdu->outdata.size = size;
	148	pdu->outdata.data = malloc(pdu->outdata.size);
	149	if (pdu->outdata.data == NULL) {
	150	rpc_set_error(rpc, "Out of memory. Failed to allocate buffer for pdu\n");
	151	rpc_free_pdu(rpc, pdu);
	152	return -1;
	153	}
	154
	155	memcpy(pdu->outdata.data, rpc->encodebuf, pdu->outdata.size);
	156	SLIST_ADD_END(&rpc->outqueue, pdu);
	157
	158	return 0;
	159	}
	160
	161	int rpc_get_pdu_size(char *buf)
	162	{
	163	uint32_t size;
	164
	165	size = ntohl((uint32_t )buf);
	166
dabf4152 AM	167	return (size & 0x7fffffff) + 4;
	168	}
	169
ee872606	170	static int rpc_process_reply(struct rpc_context rpc, struct rpc_pdu pdu, ZDR *zdr)
dabf4152 AM	171	{
	172	struct rpc_msg msg;
	173
ee872606 RRS	174	assert(rpc->magic == RPC_CONTEXT_MAGIC);
ee872606 RRS	175
5670ec6e	176	memset(&msg, 0, sizeof(struct rpc_msg));
ee872606 RRS	177	msg.body.rbody.reply.areply.verf = _null_auth;
	178	if (pdu->zdr_decode_bufsize > 0) {
	179	if (pdu->zdr_decode_buf != NULL) {
	180	free(pdu->zdr_decode_buf);
dabf4152	181	}
ee872606 RRS	182	pdu->zdr_decode_buf = malloc(pdu->zdr_decode_bufsize);
	183	if (pdu->zdr_decode_buf == NULL) {
	184	rpc_set_error(rpc, "Failed to allocate memory for "
	185	"zdr_encode_buf in rpc_process_reply");
	186	pdu->cb(rpc, RPC_STATUS_ERROR, "Failed to allocate "
	187	"buffer for decoding of ZDR reply",
	188	pdu->private_data);
dabf4152 AM	189	return 0;
dabf4152 AM	190	}
ee872606	191	memset(pdu->zdr_decode_buf, 0, pdu->zdr_decode_bufsize);
dabf4152	192	}
ee872606 RRS	193	msg.body.rbody.reply.areply.reply_data.results.where = pdu->zdr_decode_buf;
	194	msg.body.rbody.reply.areply.reply_data.results.proc = pdu->zdr_decode_fn;
	195
	196	if (zdr_replymsg(rpc, zdr, &msg) == 0) {
	197	rpc_set_error(rpc, "zdr_replymsg failed in rpc_process_reply: "
	198	"%s", rpc_get_error(rpc));
	199	pdu->cb(rpc, RPC_STATUS_ERROR, "Message rejected by server",
	200	pdu->private_data);
	201	if (pdu->zdr_decode_buf != NULL) {
	202	free(pdu->zdr_decode_buf);
	203	pdu->zdr_decode_buf = NULL;
dabf4152 AM	204	}
	205	return 0;
	206	}
ee872606	207	if (msg.body.rbody.stat != MSG_ACCEPTED) {
dabf4152 AM	208	pdu->cb(rpc, RPC_STATUS_ERROR, "RPC Packet not accepted by the server", pdu->private_data);
	209	return 0;
	210	}
ee872606	211	switch (msg.body.rbody.reply.areply.stat) {
dabf4152	212	case SUCCESS:
ee872606	213	pdu->cb(rpc, RPC_STATUS_SUCCESS, pdu->zdr_decode_buf, pdu->private_data);
dabf4152 AM	214	break;
	215	case PROG_UNAVAIL:
	216	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Program not available", pdu->private_data);
	217	break;
	218	case PROG_MISMATCH:
	219	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Program version mismatch", pdu->private_data);
	220	break;
	221	case PROC_UNAVAIL:
	222	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Procedure not available", pdu->private_data);
	223	break;
	224	case GARBAGE_ARGS:
	225	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Garbage arguments", pdu->private_data);
	226	break;
	227	case SYSTEM_ERR:
	228	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: System Error", pdu->private_data);
	229	break;
	230	default:
	231	pdu->cb(rpc, RPC_STATUS_ERROR, "Unknown rpc response from server", pdu->private_data);
	232	break;
	233	}
	234
	235	return 0;
	236	}
	237
	238	int rpc_process_pdu(struct rpc_context rpc, char buf, int size)
	239	{
	240	struct rpc_pdu *pdu;
ee872606	241	ZDR zdr;
5670ec6e	242	int pos, recordmarker = 0;
ee872606	243	uint32_t xid;
5670ec6e	244	char *reasbuf = NULL;
dabf4152	245
ee872606 RRS	246	assert(rpc->magic == RPC_CONTEXT_MAGIC);
	247
	248	memset(&zdr, 0, sizeof(ZDR));
dabf4152	249
ee872606	250	zdrmem_create(&zdr, buf, size, ZDR_DECODE);
dabf4152	251	if (rpc->is_udp == 0) {
ee872606 RRS	252	if (zdr_int(&zdr, &recordmarker) == 0) {
	253	rpc_set_error(rpc, "zdr_int reading recordmarker failed");
	254	zdr_destroy(&zdr);
dabf4152 AM	255	return -1;
dabf4152 AM	256	}
5670ec6e	257	if (!(recordmarker&0x80000000)) {
ee872606	258	zdr_destroy(&zdr);
5670ec6e AM	259	if (rpc_add_fragment(rpc, buf+4, size-4) != 0) {
	260	rpc_set_error(rpc, "Failed to queue fragment for reassembly.");
	261	return -1;
	262	}
	263	return 0;
	264	}
dabf4152	265	}
5670ec6e AM	266
	267	/* reassembly */
	268	if (recordmarker != 0 && rpc->fragments != NULL) {
	269	struct rpc_fragment *fragment;
ee872606	270	uint32_t total = size - 4;
5670ec6e AM	271	char *ptr;
5670ec6e AM	272
ee872606	273	zdr_destroy(&zdr);
5670ec6e AM	274	for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
	275	total += fragment->size;
	276	}
	277
	278	reasbuf = malloc(total);
	279	if (reasbuf == NULL) {
	280	rpc_set_error(rpc, "Failed to reassemble PDU");
	281	rpc_free_all_fragments(rpc);
	282	return -1;
	283	}
	284	ptr = reasbuf;
	285	for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
	286	memcpy(ptr, fragment->data, fragment->size);
	287	ptr += fragment->size;
	288	}
	289	memcpy(ptr, buf + 4, size - 4);
ee872606	290	zdrmem_create(&zdr, reasbuf, total, ZDR_DECODE);
5670ec6e AM	291	rpc_free_all_fragments(rpc);
	292	}
	293
ee872606 RRS	294	pos = zdr_getpos(&zdr);
	295	if (zdr_int(&zdr, (int *)&xid) == 0) {
	296	rpc_set_error(rpc, "zdr_int reading xid failed");
	297	zdr_destroy(&zdr);
5670ec6e AM	298	if (reasbuf != NULL) {
	299	free(reasbuf);
	300	}
dabf4152 AM	301	return -1;
dabf4152 AM	302	}
ee872606	303	zdr_setpos(&zdr, pos);
dabf4152 AM	304
	305	for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) {
	306	if (pdu->xid != xid) {
	307	continue;
	308	}
	309	if (rpc->is_udp == 0 \|\| rpc->is_broadcast == 0) {
	310	SLIST_REMOVE(&rpc->waitpdu, pdu);
	311	}
ee872606	312	if (rpc_process_reply(rpc, pdu, &zdr) != 0) {
dabf4152 AM	313	rpc_set_error(rpc, "rpc_procdess_reply failed");
dabf4152 AM	314	}
ee872606	315	zdr_destroy(&zdr);
dabf4152 AM	316	if (rpc->is_udp == 0 \|\| rpc->is_broadcast == 0) {
	317	rpc_free_pdu(rpc, pdu);
	318	}
5670ec6e AM	319	if (reasbuf != NULL) {
	320	free(reasbuf);
	321	}
dabf4152 AM	322	return 0;
	323	}
	324	rpc_set_error(rpc, "No matching pdu found for xid:%d", xid);
ee872606	325	zdr_destroy(&zdr);
5670ec6e AM	326	if (reasbuf != NULL) {
	327	free(reasbuf);
	328	}
dabf4152 AM	329	return -1;
	330	}
	331