--- /dev/null
+/*
+ Copyright (C) by Ronnie Sahlberg <ronniesahlberg@gmail.com> 2010
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdio.h>
+#include <strings.h>
+#include <rpc/xdr.h>
+#include <rpc/rpc_msg.h>
+#include "dlinklist.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, xdrproc_t xdr_decode_fn, int xdr_decode_bufsize)
+{
+ struct rpc_pdu *pdu;
+ struct rpc_msg msg;
+
+ if (rpc == NULL) {
+ printf("trying to allocate rpc pdu on NULL context\n");
+ return NULL;
+ }
+
+ pdu = malloc(sizeof(struct rpc_pdu));
+ if (pdu == NULL) {
+ printf("Failed to allocate pdu structure\n");
+ return NULL;
+ }
+ bzero(pdu, sizeof(struct rpc_pdu));
+ pdu->xid = rpc->xid++;
+ pdu->cb = cb;
+ pdu->private_data = private_data;
+ pdu->xdr_decode_fn = xdr_decode_fn;
+ pdu->xdr_decode_bufsize = xdr_decode_bufsize;
+
+ xdrmem_create(&pdu->xdr, rpc->encodebuf, rpc->encodebuflen, XDR_ENCODE);
+ xdr_setpos(&pdu->xdr, 4); /* skip past the record marker */
+
+ bzero(&msg, sizeof(struct rpc_msg));
+ msg.rm_xid = pdu->xid;
+ msg.rm_direction = CALL;
+ msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
+ msg.rm_call.cb_prog = program;
+ msg.rm_call.cb_vers = version;
+ msg.rm_call.cb_proc = procedure;
+ msg.rm_call.cb_cred = rpc->auth->ah_cred;
+ msg.rm_call.cb_verf = rpc->auth->ah_verf;
+
+ if (xdr_callmsg(&pdu->xdr, &msg) == 0) {
+ printf("xdr_callmsg failed\n");
+ xdr_destroy(&pdu->xdr);
+ free(pdu);
+ return NULL;
+ }
+
+ return pdu;
+}
+
+void rpc_free_pdu(struct rpc_context *rpc _U_, struct rpc_pdu *pdu)
+{
+ if (pdu->outdata.data != NULL) {
+ free(pdu->outdata.data);
+ pdu->outdata.data = NULL;
+ }
+
+ if (pdu->xdr_decode_buf != NULL) {
+ xdr_free(pdu->xdr_decode_fn, pdu->xdr_decode_buf);
+ free(pdu->xdr_decode_buf);
+ pdu->xdr_decode_buf = NULL;
+ }
+
+ xdr_destroy(&pdu->xdr);
+ free(pdu);
+}
+
+
+int rpc_queue_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu)
+{
+ int size, recordmarker;
+
+ size = xdr_getpos(&pdu->xdr);
+
+ /* write recordmarker */
+ xdr_setpos(&pdu->xdr, 0);
+ recordmarker = (size - 4) | 0x80000000;
+ xdr_int(&pdu->xdr, &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);
+ DLIST_ADD_END(rpc->outqueue, pdu, NULL);
+
+ return 0;
+}
+
+int rpc_get_pdu_size(char *buf)
+{
+ uint32_t size;
+
+ size = ntohl(*(uint32_t *)buf);
+
+ if ((size & 0x80000000) == 0) {
+ printf("cant handle oncrpc fragments\n");
+ return -1;
+ }
+
+ return (size & 0x7fffffff) + 4;
+}
+
+static int rpc_process_reply(struct rpc_context *rpc, struct rpc_pdu *pdu, XDR *xdr)
+{
+ struct rpc_msg msg;
+
+ bzero(&msg, sizeof(struct rpc_msg));
+ msg.acpted_rply.ar_verf = _null_auth;
+ if (pdu->xdr_decode_bufsize > 0) {
+ pdu->xdr_decode_buf = malloc(pdu->xdr_decode_bufsize);
+ if (pdu->xdr_decode_buf == NULL) {
+ printf("xdr_replymsg failed in portmap_getport_reply\n");
+ pdu->cb(rpc, RPC_STATUS_ERROR, "Failed to allocate buffer for decoding of XDR reply", pdu->private_data);
+ return 0;
+ }
+ bzero(pdu->xdr_decode_buf, pdu->xdr_decode_bufsize);
+ }
+ msg.acpted_rply.ar_results.where = pdu->xdr_decode_buf;
+ msg.acpted_rply.ar_results.proc = pdu->xdr_decode_fn;
+
+ if (xdr_replymsg(xdr, &msg) == 0) {
+ printf("xdr_replymsg failed in portmap_getport_reply\n");
+ pdu->cb(rpc, RPC_STATUS_ERROR, "Message rejected by server", pdu->private_data);
+ if (pdu->xdr_decode_buf != NULL) {
+ free(pdu->xdr_decode_buf);
+ pdu->xdr_decode_buf = NULL;
+ }
+ return 0;
+ }
+ if (msg.rm_reply.rp_stat != MSG_ACCEPTED) {
+ pdu->cb(rpc, RPC_STATUS_ERROR, "RPC Packet not accepted by the server", pdu->private_data);
+ return 0;
+ }
+ switch (msg.rm_reply.rp_acpt.ar_stat) {
+ case SUCCESS:
+ pdu->cb(rpc, RPC_STATUS_SUCCESS, pdu->xdr_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;
+ XDR xdr;
+ int pos, recordmarker;
+ unsigned int xid;
+
+ bzero(&xdr, sizeof(XDR));
+
+ xdrmem_create(&xdr, buf, size, XDR_DECODE);
+ if (xdr_int(&xdr, &recordmarker) == 0) {
+ printf("xdr_int reading recordmarker failed\n");
+ xdr_destroy(&xdr);
+ return -1;
+ }
+ pos = xdr_getpos(&xdr);
+ if (xdr_int(&xdr, (int *)&xid) == 0) {
+ printf("xdr_int reading xid failed\n");
+ xdr_destroy(&xdr);
+ return -1;
+ }
+ xdr_setpos(&xdr, pos);
+
+ for (pdu=rpc->waitpdu; pdu; pdu=pdu->next) {
+ if (pdu->xid != xid) {
+ continue;
+ }
+ DLIST_REMOVE(rpc->waitpdu, pdu);
+ if (rpc_process_reply(rpc, pdu, &xdr) != 0) {
+ printf("rpc_procdess_reply failed\n");
+ }
+ xdr_destroy(&xdr);
+ rpc_free_pdu(rpc, pdu);
+ return 0;
+ }
+ printf("No matching pdu found for xid:%d\n", xid);
+ xdr_destroy(&xdr);
+ return -1;
+}
+
projects / ccan / blobdiff