FSQXExt.c revision 1bedbe3f 
1/*
2 * Copyright 1990 Network Computing Devices;
3 * Portions Copyright 1987 by Digital Equipment Corporation
4 *
5 * Permission to use, copy, modify, distribute, and sell this software
6 * and its documentation for any purpose is hereby granted without fee,
7 * provided that the above copyright notice appear in all copies and
8 * that both that copyright notice and this permission notice appear
9 * in supporting documentation, and that the names of Network Computing
10 * Devices or Digital not be used in advertising or publicity pertaining
11 * to distribution of the software without specific, written prior
12 * permission. Network Computing Devices or Digital make no representations
13 * about the suitability of this software for any purpose.  It is provided
14 * "as is" without express or implied warranty.
15 *
16 * NETWORK COMPUTING DEVICES AND  DIGITAL DISCLAIM ALL WARRANTIES WITH
17 * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL NETWORK COMPUTING DEVICES
19 * OR DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES
20 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
21 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
22 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
23 * SOFTWARE.
24 */
25
26/*
27
28Copyright 1987, 1998  The Open Group
29
30Permission to use, copy, modify, distribute, and sell this software and its
31documentation for any purpose is hereby granted without fee, provided that
32the above copyright notice appear in all copies and that both that
33copyright notice and this permission notice appear in supporting
34documentation.
35
36The above copyright notice and this permission notice shall be included in
37all copies or substantial portions of the Software.
38
39THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
40IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
41FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
42OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
43AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
44CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
45
46Except as contained in this notice, the name of The Open Group shall not be
47used in advertising or otherwise to promote the sale, use or other dealings
48in this Software without prior written authorization from The Open Group.
49
50*/
51
52#ifdef HAVE_CONFIG_H
53#include <config.h>
54#endif
55#include "FSlibint.h"
56
57static void
58_FS_convert_char_info(fsXCharInfo *src, FSXCharInfo *dst)
59{
60    dst->ascent = src->ascent;
61    dst->descent = src->descent;
62    dst->left = src->left;
63    dst->right = src->right;
64    dst->width = src->width;
65    dst->attributes = src->attributes;
66}
67
68int
69FSQueryXExtents8(
70    FSServer		 *svr,
71    Font		  fid,
72    Bool		  range_type,
73    unsigned char	 *str,
74    unsigned long	  str_len,
75    FSXCharInfo		**extents)
76{
77    fsQueryXExtents8Req *req;
78    fsQueryXExtents8Reply reply;
79    FSXCharInfo *ext;
80    fsXCharInfo local_exts;
81    int         i;
82
83    GetReq(QueryXExtents8, req);
84    req->fid = fid;
85    req->range = range_type;
86    req->num_ranges = str_len;
87    req->length += (str_len + 3) >> 2;
88    _FSSend(svr, (char *) str, str_len);
89
90    /* get back the info */
91    if (!_FSReply(svr, (fsReply *) & reply,
92	       (SIZEOF(fsQueryXExtents8Reply) - SIZEOF(fsGenericReply)) >> 2,
93		  fsFalse))
94	return FSBadAlloc;
95
96#if SIZE_MAX <= UINT_MAX
97    if (reply.num_extents > SIZE_MAX / sizeof(FSXCharInfo))
98	return FSBadAlloc;
99#endif
100
101    ext = FSmalloc(sizeof(FSXCharInfo) * reply.num_extents);
102    *extents = ext;
103    if (!ext)
104	return FSBadAlloc;
105    for (i = 0; i < reply.num_extents; i++) {
106	_FSReadPad(svr, (char *) &local_exts, SIZEOF(fsXCharInfo));
107	_FS_convert_char_info(&local_exts, &ext[i]);
108    }
109
110    SyncHandle();
111    return FSSuccess;
112}
113
114int
115FSQueryXExtents16(
116    FSServer		 *svr,
117    Font		  fid,
118    Bool		  range_type,
119    FSChar2b		 *str,
120    unsigned long	  str_len,
121    FSXCharInfo		**extents)
122{
123    fsQueryXExtents16Req *req;
124    fsQueryXExtents16Reply reply;
125    FSXCharInfo *ext;
126    fsXCharInfo local_exts;
127    int         i;
128
129    GetReq(QueryXExtents16, req);
130    req->fid = fid;
131    req->range = range_type;
132    req->num_ranges = str_len;
133    req->length += ((str_len * SIZEOF(fsChar2b)) + 3) >> 2;
134    if (FSProtocolVersion(svr) == 1)
135    {
136	fsChar2b_version1 *swapped_str;
137
138	swapped_str = FSmalloc(SIZEOF(fsChar2b_version1) * str_len);
139	if (!swapped_str)
140	    return FSBadAlloc;
141	for (i = 0; i < str_len; i++) {
142	    swapped_str[i].low = str[i].low;
143	    swapped_str[i].high = str[i].high;
144	}
145	_FSSend(svr, (char *)swapped_str, (str_len*SIZEOF(fsChar2b_version1)));
146	FSfree(swapped_str);
147    } else
148	_FSSend(svr, (char *) str, (str_len * SIZEOF(fsChar2b)));
149
150    /* get back the info */
151    if (!_FSReply(svr, (fsReply *) & reply,
152	      (SIZEOF(fsQueryXExtents16Reply) - SIZEOF(fsGenericReply)) >> 2,
153		  fsFalse))
154	return FSBadAlloc;
155
156#if SIZE_MAX <= UINT_MAX
157    if (reply.num_extents > SIZE_MAX/sizeof(FSXCharInfo))
158	return FSBadAlloc;
159#endif
160
161    ext = FSmalloc(sizeof(FSXCharInfo) * reply.num_extents);
162    *extents = ext;
163    if (!ext)
164	return FSBadAlloc;
165    for (i = 0; i < reply.num_extents; i++) {
166	_FSReadPad(svr, (char *) &local_exts, SIZEOF(fsXCharInfo));
167	_FS_convert_char_info(&local_exts, &ext[i]);
168    }
169
170    SyncHandle();
171    return FSSuccess;
172}
173