1 /*
2 * Copyright (c) 2009, Sun Microsystems, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * - Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * - Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
12 * - Neither the name of Sun Microsystems, Inc. nor the names of its
13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 //#include <sys/cdefs.h>
30
31 /*
32 * xdr_stdio.c, XDR implementation on standard i/o file.
33 *
34 * Copyright (C) 1984, Sun Microsystems, Inc.
35 *
36 * This set of routines implements a XDR on a stdio stream.
37 * XDR_ENCODE serializes onto the stream, XDR_DECODE de-serializes
38 * from the stream.
39 */
40
41 #include <wintirpc.h>
42 #include "namespace.h"
43 #include <stdio.h>
44
45 //#include <arpa/inet.h>
46 #include <rpc/types.h>
47 #include <rpc/xdr.h>
48 #include "un-namespace.h"
49
50 static void xdrstdio_destroy(XDR *);
51 static bool_t xdrstdio_getlong(XDR *, long *);
52 static bool_t xdrstdio_putlong(XDR *, const long *);
53 static bool_t xdrstdio_getbytes(XDR *, char *, u_int);
54 static bool_t xdrstdio_putbytes(XDR *, const char *, u_int);
55 static u_int xdrstdio_getpos(XDR *);
56 static bool_t xdrstdio_setpos(XDR *, u_int);
57 static int32_t *xdrstdio_inline(XDR *, u_int);
58
59 /*
60 * Ops vector for stdio type XDR
61 */
62 static const struct xdr_ops xdrstdio_ops = {
63 xdrstdio_getlong, /* deseraialize a long int */
64 xdrstdio_putlong, /* seraialize a long int */
65 xdrstdio_getbytes, /* deserialize counted bytes */
66 xdrstdio_putbytes, /* serialize counted bytes */
67 xdrstdio_getpos, /* get offset in the stream */
68 xdrstdio_setpos, /* set offset in the stream */
69 xdrstdio_inline, /* prime stream for inline macros */
70 xdrstdio_destroy /* destroy stream */
71 };
72
73 /*
74 * Initialize a stdio xdr stream.
75 * Sets the xdr stream handle xdrs for use on the stream file.
76 * Operation flag is set to op.
77 */
78 void
xdrstdio_create(xdrs,file,op)79 xdrstdio_create(xdrs, file, op)
80 XDR *xdrs;
81 FILE *file;
82 enum xdr_op op;
83 {
84
85 xdrs->x_op = op;
86 xdrs->x_ops = &xdrstdio_ops;
87 xdrs->x_private = file;
88 xdrs->x_handy = 0;
89 xdrs->x_base = 0;
90 }
91
92 /*
93 * Destroy a stdio xdr stream.
94 * Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create.
95 */
96 static void
xdrstdio_destroy(xdrs)97 xdrstdio_destroy(xdrs)
98 XDR *xdrs;
99 {
100 (void)fflush((FILE *)xdrs->x_private);
101 /* XXX: should we close the file ?? */
102 }
103
104 static bool_t
xdrstdio_getlong(xdrs,lp)105 xdrstdio_getlong(xdrs, lp)
106 XDR *xdrs;
107 long *lp;
108 {
109
110 if (fread(lp, sizeof(int32_t), 1, (FILE *)xdrs->x_private) != 1)
111 return (FALSE);
112 *lp = (long)ntohl((u_int32_t)*lp);
113 return (TRUE);
114 }
115
116 static bool_t
xdrstdio_putlong(xdrs,lp)117 xdrstdio_putlong(xdrs, lp)
118 XDR *xdrs;
119 const long *lp;
120 {
121 long mycopy = (long)htonl((u_int32_t)*lp);
122
123 if (fwrite(&mycopy, sizeof(int32_t), 1, (FILE *)xdrs->x_private) != 1)
124 return (FALSE);
125 return (TRUE);
126 }
127
128 static bool_t
xdrstdio_getbytes(xdrs,addr,len)129 xdrstdio_getbytes(xdrs, addr, len)
130 XDR *xdrs;
131 char *addr;
132 u_int len;
133 {
134
135 if ((len != 0) && (fread(addr, (size_t)len, 1, (FILE *)xdrs->x_private) != 1))
136 return (FALSE);
137 return (TRUE);
138 }
139
140 static bool_t
xdrstdio_putbytes(xdrs,addr,len)141 xdrstdio_putbytes(xdrs, addr, len)
142 XDR *xdrs;
143 const char *addr;
144 u_int len;
145 {
146
147 if ((len != 0) && (fwrite(addr, (size_t)len, 1,
148 (FILE *)xdrs->x_private) != 1))
149 return (FALSE);
150 return (TRUE);
151 }
152
153 static u_int
xdrstdio_getpos(xdrs)154 xdrstdio_getpos(xdrs)
155 XDR *xdrs;
156 {
157
158 return ((u_int) ftell((FILE *)xdrs->x_private));
159 }
160
161 static bool_t
xdrstdio_setpos(xdrs,pos)162 xdrstdio_setpos(xdrs, pos)
163 XDR *xdrs;
164 u_int pos;
165 {
166
167 return ((fseek((FILE *)xdrs->x_private, (long)pos, 0) < 0) ?
168 FALSE : TRUE);
169 }
170
171 /* ARGSUSED */
172 static int32_t *
xdrstdio_inline(xdrs,len)173 xdrstdio_inline(xdrs, len)
174 XDR *xdrs;
175 u_int len;
176 {
177
178 /*
179 * Must do some work to implement this: must insure
180 * enough data in the underlying stdio buffer,
181 * that the buffer is aligned so that we can indirect through a
182 * long *, and stuff this pointer in xdrs->x_buf. Doing
183 * a fread or fwrite to a scratch buffer would defeat
184 * most of the gains to be had here and require storage
185 * management on this buffer, so we don't do this.
186 */
187 return (NULL);
188 }
189