5def0bc5d9041363b2bc833b5f50677750e5c517
2 Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
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.
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.
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/>.
22 #include "aros_compat.h"
26 #include "win32_compat.h"
29 #ifdef HAVE_NETINET_IN_H
30 #include <netinet/in.h>
33 #ifdef HAVE_SYS_SOCKET_H
34 #include <sys/socket.h>
47 #include "libnfs-zdr.h"
49 #include "libnfs-raw.h"
50 #include "libnfs-private.h"
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
)
57 assert(rpc
->magic
== RPC_CONTEXT_MAGIC
);
59 pdu
= malloc(sizeof(struct rpc_pdu
));
61 rpc_set_error(rpc
, "Out of memory: Failed to allocate pdu structure");
64 memset(pdu
, 0, sizeof(struct rpc_pdu
));
65 pdu
->xid
= rpc
->xid
++;
67 pdu
->private_data
= private_data
;
68 pdu
->zdr_decode_fn
= zdr_decode_fn
;
69 pdu
->zdr_decode_bufsize
= zdr_decode_bufsize
;
71 zdrmem_create(&pdu
->zdr
, rpc
->encodebuf
, rpc
->encodebuflen
, ZDR_ENCODE
);
72 if (rpc
->is_udp
== 0) {
73 zdr_setpos(&pdu
->zdr
, 4); /* skip past the record marker */
76 memset(&msg
, 0, sizeof(struct rpc_msg
));
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
;
86 if (zdr_callmsg(rpc
, &pdu
->zdr
, &msg
) == 0) {
87 rpc_set_error(rpc
, "zdr_callmsg failed with %s",
89 zdr_destroy(&pdu
->zdr
);
97 void rpc_free_pdu(struct rpc_context
*rpc
, struct rpc_pdu
*pdu
)
99 assert(rpc
->magic
== RPC_CONTEXT_MAGIC
);
101 if (pdu
->outdata
.data
!= NULL
) {
102 free(pdu
->outdata
.data
);
103 pdu
->outdata
.data
= NULL
;
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
;
112 zdr_destroy(&pdu
->zdr
);
117 void rpc_set_next_xid(struct rpc_context
*rpc
, uint32_t xid
)
122 int rpc_queue_pdu(struct rpc_context
*rpc
, struct rpc_pdu
*pdu
)
124 int size
, recordmarker
;
126 assert(rpc
->magic
== RPC_CONTEXT_MAGIC
);
128 size
= zdr_getpos(&pdu
->zdr
);
130 /* for udp we dont queue, we just send it straight away */
131 if (rpc
->is_udp
!= 0) {
132 // XXX add a rpc->udp_dest_sock_size and get rid of sys/socket.h and netinet/in.h
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
);
138 SLIST_ADD_END(&rpc
->waitpdu
, pdu
);
142 /* write recordmarker */
143 zdr_setpos(&pdu
->zdr
, 0);
144 recordmarker
= (size
- 4) | 0x80000000;
145 zdr_int(&pdu
->zdr
, &recordmarker
);
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
);
155 memcpy(pdu
->outdata
.data
, rpc
->encodebuf
, pdu
->outdata
.size
);
156 SLIST_ADD_END(&rpc
->outqueue
, pdu
);
161 int rpc_get_pdu_size(char *buf
)
165 size
= ntohl(*(uint32_t *)buf
);
167 return (size
& 0x7fffffff) + 4;
170 static int rpc_process_reply(struct rpc_context
*rpc
, struct rpc_pdu
*pdu
, ZDR
*zdr
)
174 assert(rpc
->magic
== RPC_CONTEXT_MAGIC
);
176 memset(&msg
, 0, sizeof(struct rpc_msg
));
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
);
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",
191 memset(pdu
->zdr_decode_buf
, 0, pdu
->zdr_decode_bufsize
);
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
;
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",
201 if (pdu
->zdr_decode_buf
!= NULL
) {
202 free(pdu
->zdr_decode_buf
);
203 pdu
->zdr_decode_buf
= NULL
;
207 if (msg
.body
.rbody
.stat
!= MSG_ACCEPTED
) {
208 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "RPC Packet not accepted by the server", pdu
->private_data
);
211 switch (msg
.body
.rbody
.reply
.areply
.stat
) {
213 pdu
->cb(rpc
, RPC_STATUS_SUCCESS
, pdu
->zdr_decode_buf
, pdu
->private_data
);
216 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Server responded: Program not available", pdu
->private_data
);
219 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Server responded: Program version mismatch", pdu
->private_data
);
222 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Server responded: Procedure not available", pdu
->private_data
);
225 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Server responded: Garbage arguments", pdu
->private_data
);
228 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Server responded: System Error", pdu
->private_data
);
231 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Unknown rpc response from server", pdu
->private_data
);
238 int rpc_process_pdu(struct rpc_context
*rpc
, char *buf
, int size
)
242 int pos
, recordmarker
= 0;
244 char *reasbuf
= NULL
;
246 assert(rpc
->magic
== RPC_CONTEXT_MAGIC
);
248 memset(&zdr
, 0, sizeof(ZDR
));
250 zdrmem_create(&zdr
, buf
, size
, ZDR_DECODE
);
251 if (rpc
->is_udp
== 0) {
252 if (zdr_int(&zdr
, &recordmarker
) == 0) {
253 rpc_set_error(rpc
, "zdr_int reading recordmarker failed");
257 if (!(recordmarker
&0x80000000)) {
259 if (rpc_add_fragment(rpc
, buf
+4, size
-4) != 0) {
260 rpc_set_error(rpc
, "Failed to queue fragment for reassembly.");
268 if (recordmarker
!= 0 && rpc
->fragments
!= NULL
) {
269 struct rpc_fragment
*fragment
;
270 uint32_t total
= size
- 4;
274 for (fragment
= rpc
->fragments
; fragment
; fragment
= fragment
->next
) {
275 total
+= fragment
->size
;
278 reasbuf
= malloc(total
);
279 if (reasbuf
== NULL
) {
280 rpc_set_error(rpc
, "Failed to reassemble PDU");
281 rpc_free_all_fragments(rpc
);
285 for (fragment
= rpc
->fragments
; fragment
; fragment
= fragment
->next
) {
286 memcpy(ptr
, fragment
->data
, fragment
->size
);
287 ptr
+= fragment
->size
;
289 memcpy(ptr
, buf
+ 4, size
- 4);
290 zdrmem_create(&zdr
, reasbuf
, total
, ZDR_DECODE
);
291 rpc_free_all_fragments(rpc
);
294 pos
= zdr_getpos(&zdr
);
295 if (zdr_int(&zdr
, (int *)&xid
) == 0) {
296 rpc_set_error(rpc
, "zdr_int reading xid failed");
298 if (reasbuf
!= NULL
) {
303 zdr_setpos(&zdr
, pos
);
305 for (pdu
=rpc
->waitpdu
; pdu
; pdu
=pdu
->next
) {
306 if (pdu
->xid
!= xid
) {
309 if (rpc
->is_udp
== 0 || rpc
->is_broadcast
== 0) {
310 SLIST_REMOVE(&rpc
->waitpdu
, pdu
);
312 if (rpc_process_reply(rpc
, pdu
, &zdr
) != 0) {
313 rpc_set_error(rpc
, "rpc_procdess_reply failed");
316 if (rpc
->is_udp
== 0 || rpc
->is_broadcast
== 0) {
317 rpc_free_pdu(rpc
, pdu
);
319 if (reasbuf
!= NULL
) {
324 rpc_set_error(rpc
, "No matching pdu found for xid:%d", xid
);
326 if (reasbuf
!= NULL
) {