[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 WIN32
#include "win32_compat.h"
#ifndef MSG_DONTWAIT
#define MSG_DONTWAIT 0
#endif
#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"

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

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	*/
a8a1b858 M	17	#ifdef WIN32
	18	#include "win32_compat.h"
	19	#ifndef MSG_DONTWAIT
6874f61e	20	#define MSG_DONTWAIT 0
a8a1b858	21	#endif
6874f61e	22	#else
84004dbf	23	#include <strings.h>
a8a1b858	24	#endif/WIN32/
6874f61e RS	25
6874f61e RS	26	#include <stdio.h>
98f5fee8	27	#include <stdlib.h>
763cd6e3 RS	28	#include <string.h>
	29	#include <sys/socket.h>
	30	#include <netinet/in.h>
f3a75078	31	#include <assert.h>
a669857d	32	#include <errno.h>
84004dbf	33	#include "slist.h"
763cd6e3	34	#include "libnfs-zdr.h"
84004dbf RS	35	#include "libnfs.h"
	36	#include "libnfs-raw.h"
	37	#include "libnfs-private.h"
	38
e77d093c RS	39	#ifdef AROS
	40	#include "aros_compat.h"
	41	#endif
	42
763cd6e3	43	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	44	{
	45	struct rpc_pdu *pdu;
	46	struct rpc_msg msg;
	47
f3a75078	48	assert(rpc->magic == RPC_CONTEXT_MAGIC);
84004dbf RS	49
	50	pdu = malloc(sizeof(struct rpc_pdu));
	51	if (pdu == NULL) {
1896d37b	52	rpc_set_error(rpc, "Out of memory: Failed to allocate pdu structure");
84004dbf RS	53	return NULL;
84004dbf RS	54	}
ea98629a	55	memset(pdu, 0, sizeof(struct rpc_pdu));
84004dbf RS	56	pdu->xid = rpc->xid++;
	57	pdu->cb = cb;
	58	pdu->private_data = private_data;
763cd6e3 RS	59	pdu->zdr_decode_fn = zdr_decode_fn;
763cd6e3 RS	60	pdu->zdr_decode_bufsize = zdr_decode_bufsize;
84004dbf	61
763cd6e3	62	zdrmem_create(&pdu->zdr, rpc->encodebuf, rpc->encodebuflen, ZDR_ENCODE);
a1992412	63	if (rpc->is_udp == 0) {
763cd6e3	64	zdr_setpos(&pdu->zdr, 4); /* skip past the record marker */
a1992412	65	}
84004dbf	66
ea98629a	67	memset(&msg, 0, sizeof(struct rpc_msg));
aab6538b RS	68	msg.xid = pdu->xid;
	69	msg.direction = CALL;
	70	msg.body.cbody.rpcvers = RPC_MSG_VERSION;
	71	msg.body.cbody.prog = program;
	72	msg.body.cbody.vers = version;
	73	msg.body.cbody.proc = procedure;
	74	msg.body.cbody.cred = rpc->auth->ah_cred;
	75	msg.body.cbody.verf = rpc->auth->ah_verf;
84004dbf	76
763cd6e3 RS	77	if (zdr_callmsg(&pdu->zdr, &msg) == 0) {
	78	rpc_set_error(rpc, "zdr_callmsg failed");
	79	zdr_destroy(&pdu->zdr);
84004dbf RS	80	free(pdu);
	81	return NULL;
	82	}
	83
	84	return pdu;
	85	}
	86
f3a75078	87	void rpc_free_pdu(struct rpc_context rpc, struct rpc_pdu pdu)
84004dbf	88	{
f3a75078 RS	89	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	90
84004dbf RS	91	if (pdu->outdata.data != NULL) {
	92	free(pdu->outdata.data);
	93	pdu->outdata.data = NULL;
	94	}
	95
763cd6e3 RS	96	if (pdu->zdr_decode_buf != NULL) {
	97	zdr_free(pdu->zdr_decode_fn, pdu->zdr_decode_buf);
	98	free(pdu->zdr_decode_buf);
	99	pdu->zdr_decode_buf = NULL;
84004dbf RS	100	}
84004dbf RS	101
763cd6e3	102	zdr_destroy(&pdu->zdr);
df5af25f	103
84004dbf RS	104	free(pdu);
	105	}
	106
	107
	108	int rpc_queue_pdu(struct rpc_context rpc, struct rpc_pdu pdu)
	109	{
	110	int size, recordmarker;
	111
f3a75078 RS	112	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	113
763cd6e3	114	size = zdr_getpos(&pdu->zdr);
84004dbf	115
a669857d RS	116	/* for udp we dont queue, we just send it straight away */
a669857d RS	117	if (rpc->is_udp != 0) {
763cd6e3	118	// XXX add a rpc->udp_dest_sock_size and get rid of sys/socket.h and netinet/in.h
a669857d RS	119	if (sendto(rpc->fd, rpc->encodebuf, size, MSG_DONTWAIT, rpc->udp_dest, sizeof(struct sockaddr_in)) < 0) {
	120	rpc_set_error(rpc, "Sendto failed with errno %s", strerror(errno));
	121	rpc_free_pdu(rpc, pdu);
	122	return -1;
	123	}
	124	SLIST_ADD_END(&rpc->waitpdu, pdu);
	125	return 0;
	126	}
	127
84004dbf	128	/* write recordmarker */
763cd6e3	129	zdr_setpos(&pdu->zdr, 0);
84004dbf	130	recordmarker = (size - 4) \| 0x80000000;
763cd6e3	131	zdr_int(&pdu->zdr, &recordmarker);
84004dbf RS	132
	133	pdu->outdata.size = size;
	134	pdu->outdata.data = malloc(pdu->outdata.size);
	135	if (pdu->outdata.data == NULL) {
	136	rpc_set_error(rpc, "Out of memory. Failed to allocate buffer for pdu\n");
	137	rpc_free_pdu(rpc, pdu);
	138	return -1;
	139	}
	140
	141	memcpy(pdu->outdata.data, rpc->encodebuf, pdu->outdata.size);
	142	SLIST_ADD_END(&rpc->outqueue, pdu);
	143
	144	return 0;
	145	}
	146
	147	int rpc_get_pdu_size(char *buf)
	148	{
	149	uint32_t size;
	150
	151	size = ntohl((uint32_t )buf);
	152
84004dbf RS	153	return (size & 0x7fffffff) + 4;
	154	}
	155
763cd6e3	156	static int rpc_process_reply(struct rpc_context rpc, struct rpc_pdu pdu, ZDR *zdr)
84004dbf RS	157	{
	158	struct rpc_msg msg;
	159
f3a75078 RS	160	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	161
ea98629a	162	memset(&msg, 0, sizeof(struct rpc_msg));
aab6538b	163	msg.body.rbody.reply.areply.verf = _null_auth;
763cd6e3 RS	164	if (pdu->zdr_decode_bufsize > 0) {
	165	if (pdu->zdr_decode_buf != NULL) {
	166	free(pdu->zdr_decode_buf);
1b9917b8	167	}
763cd6e3 RS	168	pdu->zdr_decode_buf = malloc(pdu->zdr_decode_bufsize);
	169	if (pdu->zdr_decode_buf == NULL) {
	170	rpc_set_error(rpc, "zdr_replymsg failed in portmap_getport_reply");
	171	pdu->cb(rpc, RPC_STATUS_ERROR, "Failed to allocate buffer for decoding of ZDR reply", pdu->private_data);
84004dbf RS	172	return 0;
84004dbf RS	173	}
763cd6e3	174	memset(pdu->zdr_decode_buf, 0, pdu->zdr_decode_bufsize);
84004dbf	175	}
aab6538b RS	176	msg.body.rbody.reply.areply.reply_data.results.where = pdu->zdr_decode_buf;
aab6538b RS	177	msg.body.rbody.reply.areply.reply_data.results.proc = pdu->zdr_decode_fn;
84004dbf	178
763cd6e3 RS	179	if (zdr_replymsg(zdr, &msg) == 0) {
763cd6e3 RS	180	rpc_set_error(rpc, "zdr_replymsg failed in portmap_getport_reply");
84004dbf	181	pdu->cb(rpc, RPC_STATUS_ERROR, "Message rejected by server", pdu->private_data);
763cd6e3 RS	182	if (pdu->zdr_decode_buf != NULL) {
	183	free(pdu->zdr_decode_buf);
	184	pdu->zdr_decode_buf = NULL;
84004dbf RS	185	}
	186	return 0;
	187	}
aab6538b	188	if (msg.body.rbody.stat != MSG_ACCEPTED) {
84004dbf RS	189	pdu->cb(rpc, RPC_STATUS_ERROR, "RPC Packet not accepted by the server", pdu->private_data);
	190	return 0;
	191	}
aab6538b	192	switch (msg.body.rbody.reply.areply.stat) {
84004dbf	193	case SUCCESS:
763cd6e3	194	pdu->cb(rpc, RPC_STATUS_SUCCESS, pdu->zdr_decode_buf, pdu->private_data);
84004dbf RS	195	break;
	196	case PROG_UNAVAIL:
	197	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Program not available", pdu->private_data);
	198	break;
	199	case PROG_MISMATCH:
	200	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Program version mismatch", pdu->private_data);
	201	break;
	202	case PROC_UNAVAIL:
	203	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Procedure not available", pdu->private_data);
	204	break;
	205	case GARBAGE_ARGS:
	206	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: Garbage arguments", pdu->private_data);
	207	break;
	208	case SYSTEM_ERR:
	209	pdu->cb(rpc, RPC_STATUS_ERROR, "Server responded: System Error", pdu->private_data);
	210	break;
	211	default:
	212	pdu->cb(rpc, RPC_STATUS_ERROR, "Unknown rpc response from server", pdu->private_data);
	213	break;
	214	}
	215
	216	return 0;
	217	}
	218
	219	int rpc_process_pdu(struct rpc_context rpc, char buf, int size)
	220	{
	221	struct rpc_pdu *pdu;
763cd6e3	222	ZDR zdr;
d678b73e	223	int pos, recordmarker = 0;
84004dbf	224	unsigned int xid;
d678b73e	225	char *reasbuf = NULL;
84004dbf	226
f3a75078 RS	227	assert(rpc->magic == RPC_CONTEXT_MAGIC);
f3a75078 RS	228
763cd6e3	229	memset(&zdr, 0, sizeof(ZDR));
84004dbf	230
763cd6e3	231	zdrmem_create(&zdr, buf, size, ZDR_DECODE);
a669857d	232	if (rpc->is_udp == 0) {
763cd6e3 RS	233	if (zdr_int(&zdr, &recordmarker) == 0) {
	234	rpc_set_error(rpc, "zdr_int reading recordmarker failed");
	235	zdr_destroy(&zdr);
a669857d RS	236	return -1;
a669857d RS	237	}
d678b73e	238	if (!(recordmarker&0x80000000)) {
763cd6e3	239	zdr_destroy(&zdr);
d678b73e RS	240	if (rpc_add_fragment(rpc, buf+4, size-4) != 0) {
	241	rpc_set_error(rpc, "Failed to queue fragment for reassembly.");
	242	return -1;
	243	}
	244	return 0;
	245	}
84004dbf	246	}
d678b73e RS	247
	248	/* reassembly */
	249	if (recordmarker != 0 && rpc->fragments != NULL) {
	250	struct rpc_fragment *fragment;
574095b9	251	uint32_t total = size - 4;
d678b73e RS	252	char *ptr;
d678b73e RS	253
763cd6e3	254	zdr_destroy(&zdr);
d678b73e RS	255	for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
	256	total += fragment->size;
	257	}
	258
	259	reasbuf = malloc(total);
	260	if (reasbuf == NULL) {
	261	rpc_set_error(rpc, "Failed to reassemble PDU");
	262	rpc_free_all_fragments(rpc);
	263	return -1;
	264	}
	265	ptr = reasbuf;
	266	for (fragment = rpc->fragments; fragment; fragment = fragment->next) {
	267	memcpy(ptr, fragment->data, fragment->size);
	268	ptr += fragment->size;
	269	}
	270	memcpy(ptr, buf + 4, size - 4);
763cd6e3	271	zdrmem_create(&zdr, reasbuf, total, ZDR_DECODE);
d678b73e RS	272	rpc_free_all_fragments(rpc);
	273	}
	274
763cd6e3 RS	275	pos = zdr_getpos(&zdr);
	276	if (zdr_int(&zdr, (int *)&xid) == 0) {
	277	rpc_set_error(rpc, "zdr_int reading xid failed");
	278	zdr_destroy(&zdr);
d678b73e RS	279	if (reasbuf != NULL) {
	280	free(reasbuf);
	281	}
84004dbf RS	282	return -1;
84004dbf RS	283	}
763cd6e3	284	zdr_setpos(&zdr, pos);
84004dbf RS	285
	286	for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) {
	287	if (pdu->xid != xid) {
	288	continue;
	289	}
a669857d RS	290	if (rpc->is_udp == 0 \|\| rpc->is_broadcast == 0) {
	291	SLIST_REMOVE(&rpc->waitpdu, pdu);
	292	}
763cd6e3	293	if (rpc_process_reply(rpc, pdu, &zdr) != 0) {
1896d37b	294	rpc_set_error(rpc, "rpc_procdess_reply failed");
84004dbf	295	}
763cd6e3	296	zdr_destroy(&zdr);
a669857d RS	297	if (rpc->is_udp == 0 \|\| rpc->is_broadcast == 0) {
	298	rpc_free_pdu(rpc, pdu);
	299	}
d678b73e RS	300	if (reasbuf != NULL) {
	301	free(reasbuf);
	302	}
84004dbf RS	303	return 0;
84004dbf RS	304	}
1896d37b	305	rpc_set_error(rpc, "No matching pdu found for xid:%d", xid);
763cd6e3	306	zdr_destroy(&zdr);
d678b73e RS	307	if (reasbuf != NULL) {
	308	free(reasbuf);
	309	}
84004dbf RS	310	return -1;
	311	}
	312