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 28 Copyright 1987, 1994, 1998 The Open Group 29 30 Permission to use, copy, modify, distribute, and sell this software and its 31 documentation for any purpose is hereby granted without fee, provided that 32 the above copyright notice appear in all copies and that both that 33 copyright notice and this permission notice appear in supporting 34 documentation. 35 36 The above copyright notice and this permission notice shall be included in 37 all copies or substantial portions of the Software. 38 39 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 40 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 41 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 42 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 43 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 44 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 45 46 Except as contained in this notice, the name of The Open Group shall not be 47 used in advertising or otherwise to promote the sale, use or other dealings 48 in this Software without prior written authorization from The Open Group. 49 50 */ 51 52 /* 53 * FSlib internal decls 54 */ 55 #include <X11/Xos.h> 56 #include <stdio.h> 57 #include <sys/types.h> 58 59 #include "FSlib.h" 60 #include "FSlibos.h" 61 #include <errno.h> 62 #include <stddef.h> 63 64 typedef int (* FSIOErrorHandler)(FSServer *) _X_NORETURN; 65 typedef int (* FSErrorHandler)(FSServer *, FSErrorEvent *); 66 67 extern FSIOErrorHandler _FSIOErrorFunction; 68 extern FSErrorHandler _FSErrorFunction; 69 70 extern void _FSEatData ( FSServer *svr, unsigned long n ); 71 extern void _FSWaitForWritable ( FSServer *svr ); 72 extern void _FSWaitForReadable ( FSServer *svr ); 73 extern void _FSFlush ( FSServer *svr ); 74 extern void _FSRead ( FSServer *svr, char *data, long size ); 75 extern void _FSReadEvents ( FSServer *svr ); 76 extern void _FSReadPad ( FSServer *svr, char *data, long size ); 77 extern void _FSSend ( FSServer *svr, const char *data, long size ); 78 extern void _FSEnq ( FSServer *svr, fsEvent *event ); 79 extern void _FSFreeServerStructure ( FSServer *svr ); 80 extern int _FSError ( FSServer *svr, fsError *rep ); 81 extern int _FSReply ( FSServer *svr, fsReply *rep, int extra, int discard ); 82 extern XtransConnInfo _FSConnectServer ( char *server_name ); 83 extern void _FSDisconnectServer ( XtransConnInfo trans_conn ); 84 extern void _FSSendClientPrefix ( FSServer *svr, fsConnClientPrefix *client ); 85 extern unsigned long _FSSetLastRequestRead ( FSServer *svr, 86 fsGenericReply *rep ); 87 extern int _FSUnknownWireEvent ( FSServer *svr, FSEvent *re, fsEvent *event ); 88 extern int _FSUnknownNativeEvent ( FSServer *svr, FSEvent *re, 89 fsEvent *event ); 90 extern int _FSDefaultIOError ( FSServer *svr ) _X_NORETURN; 91 extern int _FSPrintDefaultError ( FSServer *svr, FSErrorEvent *event, 92 FILE *fp ); 93 extern int _FSDefaultError ( FSServer *svr, FSErrorEvent *event ); 94 extern void _FSFreeQ ( void ); 95 96 extern FSErrorHandler FSSetErrorHandler ( FSErrorHandler handler ); 97 extern FSIOErrorHandler FSSetIOErrorHandler ( FSIOErrorHandler handler ); 98 99 extern _FSQEvent *_FSqfree; 100 extern FSServer *_FSHeadOfServerList; 101 102 #ifndef BUFSIZE 103 #define BUFSIZE 2048 /* FS output buffer size. */ 104 #endif 105 106 /* 107 * server flags 108 */ 109 #define FSlibServerIOError (1L << 0) 110 #define FSlibServerClosing (1L << 1) 111 112 113 /* FSMaxRequestBytes - returns FSMaxRequestSize converted to bytes */ 114 #define FSMaxRequestBytes(svr) ((svr)->max_request_size << 2) 115 116 /* 117 * GetReq - Get the next available FS request packet in the buffer and 118 * return it. 119 * 120 * "name" is the name of the request, e.g. InternAtom, OpenFont, etc. 121 * "req" is the name of the request pointer. 122 * 123 */ 124 125 #define GetReq(name, req) \ 126 if ((svr->bufptr + SIZEOF(fs##name##Req)) > svr->bufmax)\ 127 _FSFlush(svr);\ 128 req = (fs##name##Req *)(svr->last_req = svr->bufptr);\ 129 req->reqType = FS_##name;\ 130 req->length = (SIZEOF(fs##name##Req))>>2;\ 131 svr->bufptr += SIZEOF(fs##name##Req);\ 132 svr->request++ 133 134 /* GetReqExtra is the same as GetReq, but allocates "n" additional 135 bytes after the request. "n" must be a multiple of 4! */ 136 137 #define GetReqExtra(name, n, req) \ 138 if ((svr->bufptr + SIZEOF(fs##name##Req) + n) > svr->bufmax)\ 139 _FSFlush(svr);\ 140 req = (fs##name##Req *)(svr->last_req = svr->bufptr);\ 141 req->reqType = FS_##name;\ 142 req->length = (SIZEOF(fs##name##Req) + n)>>2;\ 143 svr->bufptr += SIZEOF(fs##name##Req) + n;\ 144 svr->request++ 145 146 /* 147 * GetResReq is for those requests that have a resource ID 148 * (Window, Pixmap, GContext, etc.) as their single argument. 149 * "rid" is the name of the resource. 150 */ 151 152 #define GetResReq(name, rid, req) \ 153 if ((svr->bufptr + SIZEOF(fsResourceReq)) > svr->bufmax)\ 154 _FSFlush(svr);\ 155 req = (fsResourceReq *) (svr->last_req = svr->bufptr);\ 156 req->reqType = FS_##name;\ 157 req->length = 2;\ 158 req->id = (CARD32) (rid);\ 159 svr->bufptr += SIZEOF(fsResourceReq);\ 160 svr->request++ 161 162 /* 163 * GetEmptyReq is for those requests that have no arguments 164 * at all. 165 */ 166 167 #define GetEmptyReq(name, req) \ 168 if ((svr->bufptr + SIZEOF(fsReq)) > svr->bufmax)\ 169 _FSFlush(svr);\ 170 req = (fsReq *) (svr->last_req = svr->bufptr);\ 171 req->reqType = FS_##name;\ 172 req->length = 1;\ 173 svr->bufptr += SIZEOF(fsReq);\ 174 svr->request++ 175 176 #define SyncHandle() \ 177 if (svr->synchandler) (*svr->synchandler)(svr) 178 179 /* 180 * Data - Place data in the buffer and pad the end to provide 181 * 32 bit word alignment. Transmit if the buffer fills. 182 * 183 * "svr" is a pointer to a Display. 184 * "data" is a pinter to a data buffer. 185 * "len" is the length of the data buffer. 186 * we can presume buffer less than 2^16 bytes, so bcopy can be used safely. 187 */ 188 189 #ifdef DataRoutineIsProcedure 190 extern void Data(); 191 192 #else 193 #define Data(svr, data, len) \ 194 if (svr->bufptr + (len) <= svr->bufmax) {\ 195 memmove(svr->bufptr, data, len);\ 196 svr->bufptr += ((len) + 3) & ~3;\ 197 } else\ 198 _FSSend(svr, data, len) 199 #endif /* DataRoutineIsProcedure */ 200 201 202 /* Allocate bytes from the buffer. No padding is done, so if 203 * the length is not a multiple of 4, the caller must be 204 * careful to leave the buffer aligned after sending the 205 * current request. 206 * 207 * "type" is the type of the pointer being assigned to. 208 * "ptr" is the pointer being assigned to. 209 * "n" is the number of bytes to allocate. 210 * 211 * Example: 212 * xTextElt *elt; 213 * BufAlloc (xTextElt *, elt, nbytes) 214 */ 215 216 #define BufAlloc(type, ptr, n) \ 217 if (svr->bufptr + (n) > svr->bufmax) \ 218 _FSFlush (svr); \ 219 ptr = (type) svr->bufptr; \ 220 svr->bufptr += (n); 221 222 /* 223 * provide emulation routines for smaller architectures 224 */ 225 #define Data16(dpy, data, len) Data((dpy), (char *)(data), (len)) 226 #define Data32(dpy, data, len) Data((dpy), (char *)(data), (len)) 227 #define _FSRead16Pad(dpy, data, len) _FSReadPad((dpy), (char *)(data), (len)) 228 #define _FSRead16(dpy, data, len) _FSRead((dpy), (char *)(data), (len)) 229 #define _FSRead32(dpy, data, len) _FSRead((dpy), (char *)(data), (len)) 230 231 #define PackData16(dpy,data,len) Data16 (dpy, data, len) 232 #define PackData32(dpy,data,len) Data32 (dpy, data, len) 233 234 #define min(a,b) (((a) < (b)) ? (a) : (b)) 235 #define max(a,b) (((a) > (b)) ? (a) : (b)) 236 237 /* srcvar must be a variable for large architecture version */ 238 #define OneDataCard32(svr,dstaddr,srcvar) \ 239 { *(unsigned long *)(dstaddr) = (srcvar); } 240 241 #define STARTITERATE(tpvar,type,start,endcond,decr) \ 242 for (tpvar = (type *) start; endcond; tpvar++, decr) { 243 #define ENDITERATE } 244 245 246 #define FSCat(x,y) x##_##y 247 248 /* copy XCharInfo parts of a protocol reply into a FSXCharInfo */ 249 250 #define FSUnpack_XCharInfo(packet, structure) \ 251 (structure)->left = FSCat(packet,left); \ 252 (structure)->right = FSCat(packet,right); \ 253 (structure)->width = FSCat(packet,width); \ 254 (structure)->ascent = FSCat(packet,ascent); \ 255 (structure)->descent = FSCat(packet,descent); \ 256 (structure)->attributes = FSCat(packet,attributes) 257 258 259 /* copy XFontInfoHeader parts of a protocol reply into a FSXFontInfoHeader */ 260 261 #define FSUnpack_XFontInfoHeader(packet, structure, serverversion) \ 262 (structure)->flags = (packet)->font_header_flags; \ 263 (structure)->draw_direction = (packet)->font_header_draw_direction; \ 264 \ 265 if (serverversion > 1) { \ 266 (structure)->char_range.min_char.high = (packet)->font_hdr_char_range_min_char_high; \ 267 (structure)->char_range.min_char.low = (packet)->font_hdr_char_range_min_char_low; \ 268 (structure)->char_range.max_char.high = (packet)->font_hdr_char_range_max_char_high; \ 269 (structure)->char_range.max_char.low = (packet)->font_hdr_char_range_max_char_low; \ 270 (structure)->default_char.high = (packet)->font_header_default_char_high; \ 271 (structure)->default_char.low = (packet)->font_header_default_char_low; \ 272 } else { \ 273 (structure)->char_range.min_char.high = (packet)->font_hdr_char_range_min_char_low; \ 274 (structure)->char_range.min_char.low = (packet)->font_hdr_char_range_min_char_high; \ 275 (structure)->char_range.max_char.high = (packet)->font_hdr_char_range_max_char_low; \ 276 (structure)->char_range.max_char.low = (packet)->font_hdr_char_range_max_char_high; \ 277 (structure)->default_char.high = (packet)->font_header_default_char_low; \ 278 (structure)->default_char.low = (packet)->font_header_default_char_high; \ 279 } \ 280 \ 281 (structure)->font_ascent = (packet)->font_header_font_ascent; \ 282 (structure)->font_descent = (packet)->font_header_font_descent; \ 283 \ 284 FSUnpack_XCharInfo((packet)->font_header_min_bounds, &(structure)->min_bounds); \ 285 FSUnpack_XCharInfo((packet)->font_header_max_bounds, &(structure)->max_bounds) 286