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 void rpc_reset_queue(struct rpc_queue
*q
)
59 * Push to the tail end of the queue
61 void rpc_enqueue(struct rpc_queue
*q
, struct rpc_pdu
*pdu
)
71 * Push to the front/head of the queue
73 void rpc_return_to_queue(struct rpc_queue
*q
, struct rpc_pdu
*pdu
)
81 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
)
86 assert(rpc
->magic
== RPC_CONTEXT_MAGIC
);
88 pdu
= malloc(sizeof(struct rpc_pdu
));
90 rpc_set_error(rpc
, "Out of memory: Failed to allocate pdu structure");
93 memset(pdu
, 0, sizeof(struct rpc_pdu
));
94 pdu
->xid
= rpc
->xid
++;
96 pdu
->private_data
= private_data
;
97 pdu
->zdr_decode_fn
= zdr_decode_fn
;
98 pdu
->zdr_decode_bufsize
= zdr_decode_bufsize
;
100 zdrmem_create(&pdu
->zdr
, rpc
->encodebuf
, rpc
->encodebuflen
, ZDR_ENCODE
);
101 if (rpc
->is_udp
== 0) {
102 zdr_setpos(&pdu
->zdr
, 4); /* skip past the record marker */
105 memset(&msg
, 0, sizeof(struct rpc_msg
));
107 msg
.direction
= CALL
;
108 msg
.body
.cbody
.rpcvers
= RPC_MSG_VERSION
;
109 msg
.body
.cbody
.prog
= program
;
110 msg
.body
.cbody
.vers
= version
;
111 msg
.body
.cbody
.proc
= procedure
;
112 msg
.body
.cbody
.cred
= rpc
->auth
->ah_cred
;
113 msg
.body
.cbody
.verf
= rpc
->auth
->ah_verf
;
115 if (zdr_callmsg(rpc
, &pdu
->zdr
, &msg
) == 0) {
116 rpc_set_error(rpc
, "zdr_callmsg failed with %s",
118 zdr_destroy(&pdu
->zdr
);
126 void rpc_free_pdu(struct rpc_context
*rpc
, struct rpc_pdu
*pdu
)
128 assert(rpc
->magic
== RPC_CONTEXT_MAGIC
);
130 if (pdu
->outdata
.data
!= NULL
) {
131 free(pdu
->outdata
.data
);
132 pdu
->outdata
.data
= NULL
;
135 if (pdu
->zdr_decode_buf
!= NULL
) {
136 zdr_free(pdu
->zdr_decode_fn
, pdu
->zdr_decode_buf
);
137 free(pdu
->zdr_decode_buf
);
138 pdu
->zdr_decode_buf
= NULL
;
141 zdr_destroy(&pdu
->zdr
);
146 void rpc_set_next_xid(struct rpc_context
*rpc
, uint32_t xid
)
151 int rpc_queue_pdu(struct rpc_context
*rpc
, struct rpc_pdu
*pdu
)
153 int size
, recordmarker
;
155 assert(rpc
->magic
== RPC_CONTEXT_MAGIC
);
157 size
= zdr_getpos(&pdu
->zdr
);
159 /* for udp we dont queue, we just send it straight away */
160 if (rpc
->is_udp
!= 0) {
161 // XXX add a rpc->udp_dest_sock_size and get rid of sys/socket.h and netinet/in.h
162 if (sendto(rpc
->fd
, rpc
->encodebuf
, size
, MSG_DONTWAIT
, rpc
->udp_dest
, sizeof(struct sockaddr_in
)) < 0) {
163 rpc_set_error(rpc
, "Sendto failed with errno %s", strerror(errno
));
164 rpc_free_pdu(rpc
, pdu
);
167 rpc_enqueue(&rpc
->waitpdu
, pdu
);
171 /* write recordmarker */
172 zdr_setpos(&pdu
->zdr
, 0);
173 recordmarker
= (size
- 4) | 0x80000000;
174 zdr_int(&pdu
->zdr
, &recordmarker
);
176 pdu
->outdata
.size
= size
;
177 pdu
->outdata
.data
= malloc(pdu
->outdata
.size
);
178 if (pdu
->outdata
.data
== NULL
) {
179 rpc_set_error(rpc
, "Out of memory. Failed to allocate buffer for pdu\n");
180 rpc_free_pdu(rpc
, pdu
);
184 memcpy(pdu
->outdata
.data
, rpc
->encodebuf
, pdu
->outdata
.size
);
185 rpc_enqueue(&rpc
->outqueue
, pdu
);
190 int rpc_get_pdu_size(char *buf
)
194 size
= ntohl(*(uint32_t *)buf
);
196 return (size
& 0x7fffffff) + 4;
199 static int rpc_process_reply(struct rpc_context
*rpc
, struct rpc_pdu
*pdu
, ZDR
*zdr
)
203 assert(rpc
->magic
== RPC_CONTEXT_MAGIC
);
205 memset(&msg
, 0, sizeof(struct rpc_msg
));
206 msg
.body
.rbody
.reply
.areply
.verf
= _null_auth
;
207 if (pdu
->zdr_decode_bufsize
> 0) {
208 if (pdu
->zdr_decode_buf
!= NULL
) {
209 free(pdu
->zdr_decode_buf
);
211 pdu
->zdr_decode_buf
= malloc(pdu
->zdr_decode_bufsize
);
212 if (pdu
->zdr_decode_buf
== NULL
) {
213 rpc_set_error(rpc
, "Failed to allocate memory for "
214 "zdr_encode_buf in rpc_process_reply");
215 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Failed to allocate "
216 "buffer for decoding of ZDR reply",
220 memset(pdu
->zdr_decode_buf
, 0, pdu
->zdr_decode_bufsize
);
222 msg
.body
.rbody
.reply
.areply
.reply_data
.results
.where
= pdu
->zdr_decode_buf
;
223 msg
.body
.rbody
.reply
.areply
.reply_data
.results
.proc
= pdu
->zdr_decode_fn
;
225 if (zdr_replymsg(rpc
, zdr
, &msg
) == 0) {
226 rpc_set_error(rpc
, "zdr_replymsg failed in rpc_process_reply: "
227 "%s", rpc_get_error(rpc
));
228 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Message rejected by server",
230 if (pdu
->zdr_decode_buf
!= NULL
) {
231 free(pdu
->zdr_decode_buf
);
232 pdu
->zdr_decode_buf
= NULL
;
236 if (msg
.body
.rbody
.stat
!= MSG_ACCEPTED
) {
237 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "RPC Packet not accepted by the server", pdu
->private_data
);
240 switch (msg
.body
.rbody
.reply
.areply
.stat
) {
242 pdu
->cb(rpc
, RPC_STATUS_SUCCESS
, pdu
->zdr_decode_buf
, pdu
->private_data
);
245 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Server responded: Program not available", pdu
->private_data
);
248 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Server responded: Program version mismatch", pdu
->private_data
);
251 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Server responded: Procedure not available", pdu
->private_data
);
254 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Server responded: Garbage arguments", pdu
->private_data
);
257 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Server responded: System Error", pdu
->private_data
);
260 pdu
->cb(rpc
, RPC_STATUS_ERROR
, "Unknown rpc response from server", pdu
->private_data
);
267 int rpc_process_pdu(struct rpc_context
*rpc
, char *buf
, int size
)
269 struct rpc_pdu
*pdu
, *prev_pdu
;
271 int pos
, recordmarker
= 0;
273 char *reasbuf
= NULL
;
275 assert(rpc
->magic
== RPC_CONTEXT_MAGIC
);
277 memset(&zdr
, 0, sizeof(ZDR
));
279 zdrmem_create(&zdr
, buf
, size
, ZDR_DECODE
);
280 if (rpc
->is_udp
== 0) {
281 if (zdr_int(&zdr
, &recordmarker
) == 0) {
282 rpc_set_error(rpc
, "zdr_int reading recordmarker failed");
286 if (!(recordmarker
&0x80000000)) {
288 if (rpc_add_fragment(rpc
, buf
+4, size
-4) != 0) {
289 rpc_set_error(rpc
, "Failed to queue fragment for reassembly.");
297 if (recordmarker
!= 0 && rpc
->fragments
!= NULL
) {
298 struct rpc_fragment
*fragment
;
299 uint32_t total
= size
- 4;
303 for (fragment
= rpc
->fragments
; fragment
; fragment
= fragment
->next
) {
304 total
+= fragment
->size
;
307 reasbuf
= malloc(total
);
308 if (reasbuf
== NULL
) {
309 rpc_set_error(rpc
, "Failed to reassemble PDU");
310 rpc_free_all_fragments(rpc
);
314 for (fragment
= rpc
->fragments
; fragment
; fragment
= fragment
->next
) {
315 memcpy(ptr
, fragment
->data
, fragment
->size
);
316 ptr
+= fragment
->size
;
318 memcpy(ptr
, buf
+ 4, size
- 4);
319 zdrmem_create(&zdr
, reasbuf
, total
, ZDR_DECODE
);
320 rpc_free_all_fragments(rpc
);
323 pos
= zdr_getpos(&zdr
);
324 if (zdr_int(&zdr
, (int *)&xid
) == 0) {
325 rpc_set_error(rpc
, "zdr_int reading xid failed");
327 if (reasbuf
!= NULL
) {
332 zdr_setpos(&zdr
, pos
);
334 /* Linear traverse singly-linked list, but track previous
335 * entry for optimised removal */
337 for (pdu
=rpc
->waitpdu
.head
; pdu
; pdu
=pdu
->next
) {
338 if (pdu
->xid
!= xid
) {
342 if (rpc
->is_udp
== 0 || rpc
->is_broadcast
== 0) {
343 /* Singly-linked but we track head and tail */
344 if (pdu
== rpc
->waitpdu
.head
)
345 rpc
->waitpdu
.head
= pdu
->next
;
346 if (pdu
== rpc
->waitpdu
.tail
)
347 rpc
->waitpdu
.tail
= prev_pdu
;
348 if (prev_pdu
!= NULL
)
349 prev_pdu
->next
= pdu
->next
;
351 if (rpc_process_reply(rpc
, pdu
, &zdr
) != 0) {
352 rpc_set_error(rpc
, "rpc_procdess_reply failed");
355 if (rpc
->is_udp
== 0 || rpc
->is_broadcast
== 0) {
356 rpc_free_pdu(rpc
, pdu
);
358 if (reasbuf
!= NULL
) {
363 rpc_set_error(rpc
, "No matching pdu found for xid:%d", xid
);
365 if (reasbuf
!= NULL
) {