diff options
Diffstat (limited to 'libX11/src/Font.c')
| -rw-r--r-- | libX11/src/Font.c | 1460 |
1 files changed, 730 insertions, 730 deletions
diff --git a/libX11/src/Font.c b/libX11/src/Font.c index 857136a34..7f56f686b 100644 --- a/libX11/src/Font.c +++ b/libX11/src/Font.c @@ -1,730 +1,730 @@ -/*
-
-Copyright 1986, 1998 The Open Group
-Copyright (c) 2000 The XFree86 Project, Inc.
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-X CONSORTIUM OR THE XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-
-Except as contained in this notice, the name of the X Consortium or of the
-XFree86 Project shall not be used in advertising or otherwise to promote the
-sale, use or other dealings in this Software without prior written
-authorization from the X Consortium and the XFree86 Project.
-
-*/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include "Xlibint.h"
-
-#if defined(XF86BIGFONT) && !defined(MUSTCOPY)
-#define USE_XF86BIGFONT
-#endif
-#ifdef USE_XF86BIGFONT
-#include <sys/types.h>
-#ifdef HAS_SHM
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <X11/extensions/xf86bigfstr.h>
-#endif
-
-#include "Xlcint.h"
-#include "XlcPubI.h"
-
-
-static XFontStruct *_XQueryFont(
- Display* /* dpy */,
- Font /* fid */,
- unsigned long /* seq */
-);
-
-#ifdef USE_XF86BIGFONT
-
-/* Private data for this extension. */
-typedef struct {
- XExtCodes *codes;
- CARD32 serverSignature;
- CARD32 serverCapabilities;
-} XF86BigfontCodes;
-
-/* Additional bit masks that can be set in serverCapabilities */
-#define CAP_VerifiedLocal 256
-
-static XF86BigfontCodes *_XF86BigfontCodes(
- Display* /* dpy */
-);
-
-static XFontStruct *_XF86BigfontQueryFont(
- Display* /* dpy */,
- XF86BigfontCodes* /* extcodes */,
- Font /* fid */,
- unsigned long /* seq */
-);
-
-void _XF86BigfontFreeFontMetrics(
- XFontStruct* /* fs */
-);
-
-#endif /* USE_XF86BIGFONT */
-
-
-XFontStruct *XLoadQueryFont(
- register Display *dpy,
- _Xconst char *name)
-{
- XFontStruct *font_result;
- register long nbytes;
- Font fid;
- xOpenFontReq *req;
- unsigned long seq;
-#ifdef USE_XF86BIGFONT
- XF86BigfontCodes *extcodes = _XF86BigfontCodes(dpy);
-#endif
-
- if (_XF86LoadQueryLocaleFont(dpy, name, &font_result, (Font *)0))
- return font_result;
- LockDisplay(dpy);
- GetReq(OpenFont, req);
- seq = dpy->request;
- nbytes = req->nbytes = name ? strlen(name) : 0;
- req->fid = fid = XAllocID(dpy);
- req->length += (nbytes+3)>>2;
- Data (dpy, name, nbytes);
- font_result = NULL;
-#ifdef USE_XF86BIGFONT
- if (extcodes) {
- font_result = _XF86BigfontQueryFont(dpy, extcodes, fid, seq);
- seq = 0;
- }
-#endif
- if (!font_result)
- font_result = _XQueryFont(dpy, fid, seq);
- UnlockDisplay(dpy);
- SyncHandle();
- return font_result;
-}
-
-XFontStruct *XQueryFont (
- register Display *dpy,
- Font fid)
-{
- XFontStruct *font_result;
-#ifdef USE_XF86BIGFONT
- XF86BigfontCodes *extcodes = _XF86BigfontCodes(dpy);
-#endif
-
- LockDisplay(dpy);
- font_result = NULL;
-#ifdef USE_XF86BIGFONT
- if (extcodes) {
- font_result = _XF86BigfontQueryFont(dpy, extcodes, fid, 0L);
- }
-#endif
- if (!font_result)
- font_result = _XQueryFont(dpy, fid, 0L);
- UnlockDisplay(dpy);
- SyncHandle();
- return font_result;
-}
-
-int
-XFreeFont(
- register Display *dpy,
- XFontStruct *fs)
-{
- register xResourceReq *req;
- register _XExtension *ext;
-
- LockDisplay(dpy);
- /* call out to any extensions interested */
- for (ext = dpy->ext_procs; ext; ext = ext->next)
- if (ext->free_Font) (*ext->free_Font)(dpy, fs, &ext->codes);
- GetResReq (CloseFont, fs->fid, req);
- UnlockDisplay(dpy);
- SyncHandle();
- if (fs->per_char) {
-#ifdef USE_XF86BIGFONT
- _XF86BigfontFreeFontMetrics(fs);
-#else
- Xfree ((char *) fs->per_char);
-#endif
- }
- _XFreeExtData(fs->ext_data);
- if (fs->properties)
- Xfree ((char *) fs->properties);
- Xfree ((char *) fs);
- return 1;
-}
-
-
-static XFontStruct *
-_XQueryFont (
- register Display *dpy,
- Font fid,
- unsigned long seq)
-{
- register XFontStruct *fs;
- register long nbytes;
- xQueryFontReply reply;
- register xResourceReq *req;
- register _XExtension *ext;
- _XAsyncHandler async;
- _XAsyncErrorState async_state;
-
- if (seq) {
- async_state.min_sequence_number = seq;
- async_state.max_sequence_number = seq;
- async_state.error_code = BadName;
- async_state.major_opcode = X_OpenFont;
- async_state.minor_opcode = 0;
- async_state.error_count = 0;
- async.next = dpy->async_handlers;
- async.handler = _XAsyncErrorHandler;
- async.data = (XPointer)&async_state;
- dpy->async_handlers = &async;
- }
- GetResReq(QueryFont, fid, req);
- if (!_XReply (dpy, (xReply *) &reply,
- ((SIZEOF(xQueryFontReply) - SIZEOF(xReply)) >> 2), xFalse)) {
- if (seq)
- DeqAsyncHandler(dpy, &async);
- return (XFontStruct *)NULL;
- }
- if (seq)
- DeqAsyncHandler(dpy, &async);
- if (! (fs = (XFontStruct *) Xmalloc (sizeof (XFontStruct)))) {
- _XEatData(dpy, (unsigned long)(reply.nFontProps * SIZEOF(xFontProp) +
- reply.nCharInfos * SIZEOF(xCharInfo)));
- return (XFontStruct *)NULL;
- }
- fs->ext_data = NULL;
- fs->fid = fid;
- fs->direction = reply.drawDirection;
- fs->min_char_or_byte2 = reply.minCharOrByte2;
- fs->max_char_or_byte2 = reply.maxCharOrByte2;
- fs->min_byte1 = reply.minByte1;
- fs->max_byte1 = reply.maxByte1;
- fs->default_char = reply.defaultChar;
- fs->all_chars_exist = reply.allCharsExist;
- fs->ascent = cvtINT16toInt (reply.fontAscent);
- fs->descent = cvtINT16toInt (reply.fontDescent);
-
-#ifdef MUSTCOPY
- {
- xCharInfo *xcip;
-
- xcip = (xCharInfo *) &reply.minBounds;
- fs->min_bounds.lbearing = cvtINT16toShort(xcip->leftSideBearing);
- fs->min_bounds.rbearing = cvtINT16toShort(xcip->rightSideBearing);
- fs->min_bounds.width = cvtINT16toShort(xcip->characterWidth);
- fs->min_bounds.ascent = cvtINT16toShort(xcip->ascent);
- fs->min_bounds.descent = cvtINT16toShort(xcip->descent);
- fs->min_bounds.attributes = xcip->attributes;
-
- xcip = (xCharInfo *) &reply.maxBounds;
- fs->max_bounds.lbearing = cvtINT16toShort(xcip->leftSideBearing);
- fs->max_bounds.rbearing = cvtINT16toShort(xcip->rightSideBearing);
- fs->max_bounds.width = cvtINT16toShort(xcip->characterWidth);
- fs->max_bounds.ascent = cvtINT16toShort(xcip->ascent);
- fs->max_bounds.descent = cvtINT16toShort(xcip->descent);
- fs->max_bounds.attributes = xcip->attributes;
- }
-#else
- /* XXX the next two statements won't work if short isn't 16 bits */
- fs->min_bounds = * (XCharStruct *) &reply.minBounds;
- fs->max_bounds = * (XCharStruct *) &reply.maxBounds;
-#endif /* MUSTCOPY */
-
- fs->n_properties = reply.nFontProps;
- /*
- * if no properties defined for the font, then it is bad
- * font, but shouldn't try to read nothing.
- */
- fs->properties = NULL;
- if (fs->n_properties > 0) {
- nbytes = reply.nFontProps * sizeof(XFontProp);
- fs->properties = (XFontProp *) Xmalloc ((unsigned) nbytes);
- nbytes = reply.nFontProps * SIZEOF(xFontProp);
- if (! fs->properties) {
- Xfree((char *) fs);
- _XEatData(dpy, (unsigned long)
- (nbytes + reply.nCharInfos * SIZEOF(xCharInfo)));
- return (XFontStruct *)NULL;
- }
- _XRead32 (dpy, (long *)fs->properties, nbytes);
- }
- /*
- * If no characters in font, then it is a bad font, but
- * shouldn't try to read nothing.
- */
- /* have to unpack charinfos on some machines (CRAY) */
- fs->per_char = NULL;
- if (reply.nCharInfos > 0){
- nbytes = reply.nCharInfos * sizeof(XCharStruct);
- if (! (fs->per_char = (XCharStruct *) Xmalloc ((unsigned) nbytes))) {
- if (fs->properties) Xfree((char *) fs->properties);
- Xfree((char *) fs);
- _XEatData(dpy, (unsigned long)
- (reply.nCharInfos * SIZEOF(xCharInfo)));
- return (XFontStruct *)NULL;
- }
-
-#ifdef MUSTCOPY
- {
- register XCharStruct *cs = fs->per_char;
- register int i;
-
- for (i = 0; i < reply.nCharInfos; i++, cs++) {
- xCharInfo xcip;
-
- _XRead(dpy, (char *)&xcip, SIZEOF(xCharInfo));
- cs->lbearing = cvtINT16toShort(xcip.leftSideBearing);
- cs->rbearing = cvtINT16toShort(xcip.rightSideBearing);
- cs->width = cvtINT16toShort(xcip.characterWidth);
- cs->ascent = cvtINT16toShort(xcip.ascent);
- cs->descent = cvtINT16toShort(xcip.descent);
- cs->attributes = xcip.attributes;
- }
- }
-#else
- nbytes = reply.nCharInfos * SIZEOF(xCharInfo);
- _XRead16 (dpy, (char *)fs->per_char, nbytes);
-#endif
- }
-
- /* call out to any extensions interested */
- for (ext = dpy->ext_procs; ext; ext = ext->next)
- if (ext->create_Font) (*ext->create_Font)(dpy, fs, &ext->codes);
- return fs;
-}
-
-#ifdef USE_XF86BIGFONT
-
-/* Magic cookie for finding the right XExtData structure on the display's
- extension list. */
-static int XF86BigfontNumber = 1040697125;
-
-static int
-_XF86BigfontFreeCodes (
- XExtData *extension)
-{
- /* Don't Xfree(extension->private_data) because it is on the same malloc
- chunk as extension. */
- /* Don't Xfree(extension->private_data->codes) because this is shared with
- the display's ext_procs list. */
- return 0;
-}
-
-static XF86BigfontCodes *
-_XF86BigfontCodes (
- register Display *dpy)
-{
- XEDataObject dpy_union;
- XExtData *pData;
- XF86BigfontCodes *pCodes;
- char *envval;
-
- dpy_union.display = dpy;
-
- /* If the server is known to support the XF86Bigfont extension,
- * return the extension codes. If the server is known to not support
- * the extension, don't bother checking again.
- */
- pData = XFindOnExtensionList(XEHeadOfExtensionList(dpy_union),
- XF86BigfontNumber);
- if (pData)
- return (XF86BigfontCodes *) pData->private_data;
-
- pData = (XExtData *) Xmalloc(sizeof(XExtData) + sizeof(XF86BigfontCodes));
- if (!pData) {
- /* Out of luck. */
- return (XF86BigfontCodes *) NULL;
- }
-
- /* See if the server supports the XF86Bigfont extension. */
- envval = getenv("XF86BIGFONT_DISABLE"); /* Let the user disable it. */
- if (envval != NULL && envval[0] != '\0')
- pCodes = NULL;
- else {
- XExtCodes *codes = XInitExtension(dpy, XF86BIGFONTNAME);
- if (codes == NULL)
- pCodes = NULL;
- else {
- pCodes = (XF86BigfontCodes *) &pData[1];
- pCodes->codes = codes;
- }
- }
- pData->number = XF86BigfontNumber;
- pData->private_data = (XPointer) pCodes;
- pData->free_private = _XF86BigfontFreeCodes;
- XAddToExtensionList(XEHeadOfExtensionList(dpy_union), pData);
- if (pCodes) {
- int result;
-
- /* See if the server supports the XF86BigfontQueryFont request. */
- xXF86BigfontQueryVersionReply reply;
- register xXF86BigfontQueryVersionReq *req;
-
- LockDisplay(dpy);
-
- GetReq(XF86BigfontQueryVersion, req);
- req->reqType = pCodes->codes->major_opcode;
- req->xf86bigfontReqType = X_XF86BigfontQueryVersion;
-
- result = _XReply (dpy, (xReply *) &reply,
- (SIZEOF(xXF86BigfontQueryVersionReply) - SIZEOF(xReply)) >> 2,
- xFalse);
-
- UnlockDisplay(dpy);
- SyncHandle();
-
- if(!result)
- goto ignore_extension;
-
- /* No need to provide backward compatibility with version 1.0. It
- was never widely distributed. */
- if (!(reply.majorVersion > 1
- || (reply.majorVersion == 1 && reply.minorVersion >= 1)))
- goto ignore_extension;
-
- pCodes->serverSignature = reply.signature;
- pCodes->serverCapabilities = reply.capabilities;
- }
- return pCodes;
-
- ignore_extension:
- /* No need to Xfree(pCodes) or Xfree(pCodes->codes), see
- _XF86BigfontFreeCodes comment. */
- pCodes = (XF86BigfontCodes *) NULL;
- pData->private_data = (XPointer) pCodes;
- return pCodes;
-}
-
-static int
-_XF86BigfontFreeNop (
- XExtData *extension)
-{
- return 0;
-}
-
-static XFontStruct *
-_XF86BigfontQueryFont (
- register Display *dpy,
- XF86BigfontCodes *extcodes,
- Font fid,
- unsigned long seq)
-{
- register XFontStruct *fs;
- register long nbytes;
- xXF86BigfontQueryFontReply reply;
- register xXF86BigfontQueryFontReq *req;
- register _XExtension *ext;
- _XAsyncHandler async1;
- _XAsyncErrorState async1_state;
- _XAsyncHandler async2;
- _XAsyncErrorState async2_state;
-
- if (seq) {
- async1_state.min_sequence_number = seq;
- async1_state.max_sequence_number = seq;
- async1_state.error_code = BadName;
- async1_state.major_opcode = X_OpenFont;
- async1_state.minor_opcode = 0;
- async1_state.error_count = 0;
- async1.next = dpy->async_handlers;
- async1.handler = _XAsyncErrorHandler;
- async1.data = (XPointer)&async1_state;
- dpy->async_handlers = &async1;
- }
-
- GetReq(XF86BigfontQueryFont, req);
- req->reqType = extcodes->codes->major_opcode;
- req->xf86bigfontReqType = X_XF86BigfontQueryFont;
- req->id = fid;
- req->flags = (extcodes->serverCapabilities & XF86Bigfont_CAP_LocalShm
- ? XF86Bigfont_FLAGS_Shm : 0);
-
- /* The function _XQueryFont benefits from a "magic" error handler for
- BadFont coming from a X_QueryFont request. (See function _XReply.)
- We have to establish an error handler ourselves. */
- async2_state.min_sequence_number = dpy->request;
- async2_state.max_sequence_number = dpy->request;
- async2_state.error_code = BadFont;
- async2_state.major_opcode = extcodes->codes->major_opcode;
- async2_state.minor_opcode = X_XF86BigfontQueryFont;
- async2_state.error_count = 0;
- async2.next = dpy->async_handlers;
- async2.handler = _XAsyncErrorHandler;
- async2.data = (XPointer)&async2_state;
- dpy->async_handlers = &async2;
-
- if (!_XReply (dpy, (xReply *) &reply,
- ((SIZEOF(xXF86BigfontQueryFontReply) - SIZEOF(xReply)) >> 2), xFalse)) {
- DeqAsyncHandler(dpy, &async2);
- if (seq)
- DeqAsyncHandler(dpy, &async1);
- return (XFontStruct *)NULL;
- }
- DeqAsyncHandler(dpy, &async2);
- if (seq)
- DeqAsyncHandler(dpy, &async1);
- if (! (fs = (XFontStruct *) Xmalloc (sizeof (XFontStruct)))) {
- _XEatData(dpy,
- reply.nFontProps * SIZEOF(xFontProp)
- + (reply.nCharInfos > 0 && reply.shmid == (CARD32)(-1)
- ? reply.nUniqCharInfos * SIZEOF(xCharInfo)
- + (reply.nCharInfos+1)/2 * 2 * sizeof(CARD16)
- : 0));
- return (XFontStruct *)NULL;
- }
- fs->ext_data = NULL;
- fs->fid = fid;
- fs->direction = reply.drawDirection;
- fs->min_char_or_byte2 = reply.minCharOrByte2;
- fs->max_char_or_byte2 = reply.maxCharOrByte2;
- fs->min_byte1 = reply.minByte1;
- fs->max_byte1 = reply.maxByte1;
- fs->default_char = reply.defaultChar;
- fs->all_chars_exist = reply.allCharsExist;
- fs->ascent = cvtINT16toInt (reply.fontAscent);
- fs->descent = cvtINT16toInt (reply.fontDescent);
-
- /* XXX the next two statements won't work if short isn't 16 bits */
- fs->min_bounds = * (XCharStruct *) &reply.minBounds;
- fs->max_bounds = * (XCharStruct *) &reply.maxBounds;
-
- fs->n_properties = reply.nFontProps;
- /*
- * if no properties defined for the font, then it is bad
- * font, but shouldn't try to read nothing.
- */
- fs->properties = NULL;
- if (fs->n_properties > 0) {
- nbytes = reply.nFontProps * sizeof(XFontProp);
- fs->properties = (XFontProp *) Xmalloc ((unsigned) nbytes);
- nbytes = reply.nFontProps * SIZEOF(xFontProp);
- if (! fs->properties) {
- Xfree((char *) fs);
- _XEatData(dpy,
- nbytes
- + (reply.nCharInfos > 0 && reply.shmid == (CARD32)(-1)
- ? reply.nUniqCharInfos * SIZEOF(xCharInfo)
- + (reply.nCharInfos+1)/2 * 2 * sizeof(CARD16)
- : 0));
- return (XFontStruct *)NULL;
- }
- _XRead32 (dpy, (long *)fs->properties, nbytes);
- }
-
- fs->per_char = NULL;
- if (reply.nCharInfos > 0) {
- /* fprintf(stderr, "received font metrics, nCharInfos = %d, nUniqCharInfos = %d, shmid = %d\n", reply.nCharInfos, reply.nUniqCharInfos, reply.shmid); */
- if (reply.shmid == (CARD32)(-1)) {
- xCharInfo* pUniqCI;
- CARD16* pIndex2UniqIndex;
- int i;
-
- nbytes = reply.nUniqCharInfos * SIZEOF(xCharInfo)
- + (reply.nCharInfos+1)/2 * 2 * sizeof(CARD16);
- pUniqCI = (xCharInfo *) Xmalloc (nbytes);
- if (!pUniqCI) {
- if (fs->properties) Xfree((char *) fs->properties);
- Xfree((char *) fs);
- _XEatData(dpy, nbytes);
- return (XFontStruct *)NULL;
- }
- if (! (fs->per_char = (XCharStruct *) Xmalloc (reply.nCharInfos * sizeof(XCharStruct)))) {
- Xfree((char *) pUniqCI);
- if (fs->properties) Xfree((char *) fs->properties);
- Xfree((char *) fs);
- _XEatData(dpy, nbytes);
- return (XFontStruct *)NULL;
- }
- _XRead16 (dpy, (char *) pUniqCI, nbytes);
- pIndex2UniqIndex = (CARD16*) (pUniqCI + reply.nUniqCharInfos);
- for (i = 0; i < reply.nCharInfos; i++) {
- if (pIndex2UniqIndex[i] >= reply.nUniqCharInfos) {
- fprintf(stderr, "_XF86BigfontQueryFont: server returned wrong data\n");
- Xfree((char *) pUniqCI);
- if (fs->properties) Xfree((char *) fs->properties);
- Xfree((char *) fs);
- return (XFontStruct *)NULL;
- }
- /* XXX the next statement won't work if short isn't 16 bits */
- fs->per_char[i] = * (XCharStruct *) &pUniqCI[pIndex2UniqIndex[i]];
- }
- Xfree((char *) pUniqCI);
- } else {
-#ifdef HAS_SHM
- XExtData *pData;
- XEDataObject fs_union;
- char *addr;
-
- pData = (XExtData *) Xmalloc(sizeof(XExtData));
- if (!pData) {
- if (fs->properties) Xfree((char *) fs->properties);
- Xfree((char *) fs);
- return (XFontStruct *)NULL;
- }
-
- /* In some cases (e.g. an ssh daemon forwarding an X session to
- a remote machine) it is possible that the X server thinks we
- are running on the same machine (because getpeername() and
- LocalClient() cannot know about the forwarding) but we are
- not really local. Therefore, when we attach the first shared
- memory segment, we verify that we are on the same machine as
- the X server by checking that 1. shmat() succeeds, 2. the
- segment has a sufficient size, 3. it contains the X server's
- signature. Then we set the CAP_VerifiedLocal bit to indicate
- the verification was successful. */
-
- if ((addr = shmat(reply.shmid, NULL, SHM_RDONLY)) == (char *)-1) {
- if (extcodes->serverCapabilities & CAP_VerifiedLocal)
- fprintf(stderr, "_XF86BigfontQueryFont: could not attach shm segment\n");
- Xfree((char *) pData);
- if (fs->properties) Xfree((char *) fs->properties);
- Xfree((char *) fs);
- /* Stop requesting shared memory transport from now on. */
- extcodes->serverCapabilities &= ~ XF86Bigfont_CAP_LocalShm;
- return (XFontStruct *)NULL;
- }
-
- if (!(extcodes->serverCapabilities & CAP_VerifiedLocal)) {
- struct shmid_ds buf;
- if (!(shmctl(reply.shmid, IPC_STAT, &buf) >= 0
- && buf.shm_segsz >= reply.shmsegoffset + reply.nCharInfos * sizeof(XCharStruct) + sizeof(CARD32)
- && *(CARD32 *)(addr + reply.shmsegoffset + reply.nCharInfos * sizeof(XCharStruct)) == extcodes->serverSignature)) {
- shmdt(addr);
- Xfree((char *) pData);
- if (fs->properties) Xfree((char *) fs->properties);
- Xfree((char *) fs);
- /* Stop requesting shared memory transport from now on. */
- extcodes->serverCapabilities &= ~ XF86Bigfont_CAP_LocalShm;
- return (XFontStruct *)NULL;
- }
- extcodes->serverCapabilities |= CAP_VerifiedLocal;
- }
-
- pData->number = XF86BigfontNumber;
- pData->private_data = (XPointer) addr;
- pData->free_private = _XF86BigfontFreeNop;
- fs_union.font = fs;
- XAddToExtensionList(XEHeadOfExtensionList(fs_union), pData);
-
- fs->per_char = (XCharStruct *) (addr + reply.shmsegoffset);
-#else
- fprintf(stderr, "_XF86BigfontQueryFont: try recompiling libX11 with HasShm, Xserver has shm support\n");
- if (fs->properties) Xfree((char *) fs->properties);
- Xfree((char *) fs);
- /* Stop requesting shared memory transport from now on. */
- extcodes->serverCapabilities &= ~ XF86Bigfont_CAP_LocalShm;
- return (XFontStruct *)NULL;
-#endif
- }
- }
-
- /* call out to any extensions interested */
- for (ext = dpy->ext_procs; ext; ext = ext->next)
- if (ext->create_Font) (*ext->create_Font)(dpy, fs, &ext->codes);
- return fs;
-}
-
-void
-_XF86BigfontFreeFontMetrics (XFontStruct *fs)
-{
-#ifdef HAS_SHM
- XExtData *pData;
- XEDataObject fs_union;
-
- fs_union.font = fs;
- if ((pData = XFindOnExtensionList(XEHeadOfExtensionList(fs_union),
- XF86BigfontNumber)))
- shmdt ((char *) pData->private_data);
- else
- Xfree ((char *) fs->per_char);
-#else
- Xfree ((char *) fs->per_char);
-#endif
-}
-
-#endif /* USE_XF86BIGFONT */
-
-int _XF86LoadQueryLocaleFont(
- Display *dpy,
- _Xconst char *name,
- XFontStruct **xfp,
- Font *fidp)
-{
- int l;
- const char *charset, *p;
- char buf[256];
- XFontStruct *fs;
- XLCd lcd;
-
- if (!name)
- return 0;
- l = strlen(name);
- if (l < 2 || name[l - 1] != '*' || name[l - 2] != '-')
- return 0;
- charset = NULL;
- /* next three lines stolen from _XkbGetCharset() */
- lcd = _XlcCurrentLC();
- if ((lcd = _XlcCurrentLC()) != 0)
- charset = XLC_PUBLIC(lcd, encoding_name);
- if (!charset || (p = strrchr(charset, '-')) == 0 || p == charset || p[1] == 0 || (p[1] == '*' && p[2] == 0)) {
- /* prefer latin1 if no encoding found */
- charset = "ISO8859-1";
- p = charset + 7;
- }
- if (l - 2 - (p - charset) < 0)
- return 0;
- if (_XlcNCompareISOLatin1(name + l - 2 - (p - charset), charset, p - charset))
- return 0;
- if (strlen(p + 1) + l - 1 >= sizeof(buf) - 1)
- return 0;
- strcpy(buf, name);
- strcpy(buf + l - 1, p + 1);
- fs = XLoadQueryFont(dpy, buf);
- if (!fs)
- return 0;
- if (xfp) {
- *xfp = fs;
- if (fidp)
- *fidp = fs->fid;
- } else if (fidp) {
- if (fs->per_char) {
-#ifdef USE_XF86BIGFONT
- _XF86BigfontFreeFontMetrics(fs);
-#else
- Xfree ((char *) fs->per_char);
-#endif
- }
- _XFreeExtData(fs->ext_data);
- if (fs->properties)
- Xfree ((char *) fs->properties);
- *fidp = fs->fid;
- Xfree ((char *) fs);
- } else {
- XFreeFont(dpy, fs);
- }
- return 1;
-}
+/* + +Copyright 1986, 1998 The Open Group +Copyright (c) 2000 The XFree86 Project, Inc. + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +X CONSORTIUM OR THE XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + +Except as contained in this notice, the name of the X Consortium or of the +XFree86 Project shall not be used in advertising or otherwise to promote the +sale, use or other dealings in this Software without prior written +authorization from the X Consortium and the XFree86 Project. + +*/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "Xlibint.h" + +#if defined(XF86BIGFONT) && !defined(MUSTCOPY) +#define USE_XF86BIGFONT +#endif +#ifdef USE_XF86BIGFONT +#include <sys/types.h> +#ifdef HAS_SHM +#include <sys/ipc.h> +#include <sys/shm.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <X11/extensions/xf86bigfproto.h> +#endif + +#include "Xlcint.h" +#include "XlcPubI.h" + + +static XFontStruct *_XQueryFont( + Display* /* dpy */, + Font /* fid */, + unsigned long /* seq */ +); + +#ifdef USE_XF86BIGFONT + +/* Private data for this extension. */ +typedef struct { + XExtCodes *codes; + CARD32 serverSignature; + CARD32 serverCapabilities; +} XF86BigfontCodes; + +/* Additional bit masks that can be set in serverCapabilities */ +#define CAP_VerifiedLocal 256 + +static XF86BigfontCodes *_XF86BigfontCodes( + Display* /* dpy */ +); + +static XFontStruct *_XF86BigfontQueryFont( + Display* /* dpy */, + XF86BigfontCodes* /* extcodes */, + Font /* fid */, + unsigned long /* seq */ +); + +void _XF86BigfontFreeFontMetrics( + XFontStruct* /* fs */ +); + +#endif /* USE_XF86BIGFONT */ + + +XFontStruct *XLoadQueryFont( + register Display *dpy, + _Xconst char *name) +{ + XFontStruct *font_result; + register long nbytes; + Font fid; + xOpenFontReq *req; + unsigned long seq; +#ifdef USE_XF86BIGFONT + XF86BigfontCodes *extcodes = _XF86BigfontCodes(dpy); +#endif + + if (_XF86LoadQueryLocaleFont(dpy, name, &font_result, (Font *)0)) + return font_result; + LockDisplay(dpy); + GetReq(OpenFont, req); + seq = dpy->request; + nbytes = req->nbytes = name ? strlen(name) : 0; + req->fid = fid = XAllocID(dpy); + req->length += (nbytes+3)>>2; + Data (dpy, name, nbytes); + font_result = NULL; +#ifdef USE_XF86BIGFONT + if (extcodes) { + font_result = _XF86BigfontQueryFont(dpy, extcodes, fid, seq); + seq = 0; + } +#endif + if (!font_result) + font_result = _XQueryFont(dpy, fid, seq); + UnlockDisplay(dpy); + SyncHandle(); + return font_result; +} + +XFontStruct *XQueryFont ( + register Display *dpy, + Font fid) +{ + XFontStruct *font_result; +#ifdef USE_XF86BIGFONT + XF86BigfontCodes *extcodes = _XF86BigfontCodes(dpy); +#endif + + LockDisplay(dpy); + font_result = NULL; +#ifdef USE_XF86BIGFONT + if (extcodes) { + font_result = _XF86BigfontQueryFont(dpy, extcodes, fid, 0L); + } +#endif + if (!font_result) + font_result = _XQueryFont(dpy, fid, 0L); + UnlockDisplay(dpy); + SyncHandle(); + return font_result; +} + +int +XFreeFont( + register Display *dpy, + XFontStruct *fs) +{ + register xResourceReq *req; + register _XExtension *ext; + + LockDisplay(dpy); + /* call out to any extensions interested */ + for (ext = dpy->ext_procs; ext; ext = ext->next) + if (ext->free_Font) (*ext->free_Font)(dpy, fs, &ext->codes); + GetResReq (CloseFont, fs->fid, req); + UnlockDisplay(dpy); + SyncHandle(); + if (fs->per_char) { +#ifdef USE_XF86BIGFONT + _XF86BigfontFreeFontMetrics(fs); +#else + Xfree ((char *) fs->per_char); +#endif + } + _XFreeExtData(fs->ext_data); + if (fs->properties) + Xfree ((char *) fs->properties); + Xfree ((char *) fs); + return 1; +} + + +static XFontStruct * +_XQueryFont ( + register Display *dpy, + Font fid, + unsigned long seq) +{ + register XFontStruct *fs; + register long nbytes; + xQueryFontReply reply; + register xResourceReq *req; + register _XExtension *ext; + _XAsyncHandler async; + _XAsyncErrorState async_state; + + if (seq) { + async_state.min_sequence_number = seq; + async_state.max_sequence_number = seq; + async_state.error_code = BadName; + async_state.major_opcode = X_OpenFont; + async_state.minor_opcode = 0; + async_state.error_count = 0; + async.next = dpy->async_handlers; + async.handler = _XAsyncErrorHandler; + async.data = (XPointer)&async_state; + dpy->async_handlers = &async; + } + GetResReq(QueryFont, fid, req); + if (!_XReply (dpy, (xReply *) &reply, + ((SIZEOF(xQueryFontReply) - SIZEOF(xReply)) >> 2), xFalse)) { + if (seq) + DeqAsyncHandler(dpy, &async); + return (XFontStruct *)NULL; + } + if (seq) + DeqAsyncHandler(dpy, &async); + if (! (fs = (XFontStruct *) Xmalloc (sizeof (XFontStruct)))) { + _XEatData(dpy, (unsigned long)(reply.nFontProps * SIZEOF(xFontProp) + + reply.nCharInfos * SIZEOF(xCharInfo))); + return (XFontStruct *)NULL; + } + fs->ext_data = NULL; + fs->fid = fid; + fs->direction = reply.drawDirection; + fs->min_char_or_byte2 = reply.minCharOrByte2; + fs->max_char_or_byte2 = reply.maxCharOrByte2; + fs->min_byte1 = reply.minByte1; + fs->max_byte1 = reply.maxByte1; + fs->default_char = reply.defaultChar; + fs->all_chars_exist = reply.allCharsExist; + fs->ascent = cvtINT16toInt (reply.fontAscent); + fs->descent = cvtINT16toInt (reply.fontDescent); + +#ifdef MUSTCOPY + { + xCharInfo *xcip; + + xcip = (xCharInfo *) &reply.minBounds; + fs->min_bounds.lbearing = cvtINT16toShort(xcip->leftSideBearing); + fs->min_bounds.rbearing = cvtINT16toShort(xcip->rightSideBearing); + fs->min_bounds.width = cvtINT16toShort(xcip->characterWidth); + fs->min_bounds.ascent = cvtINT16toShort(xcip->ascent); + fs->min_bounds.descent = cvtINT16toShort(xcip->descent); + fs->min_bounds.attributes = xcip->attributes; + + xcip = (xCharInfo *) &reply.maxBounds; + fs->max_bounds.lbearing = cvtINT16toShort(xcip->leftSideBearing); + fs->max_bounds.rbearing = cvtINT16toShort(xcip->rightSideBearing); + fs->max_bounds.width = cvtINT16toShort(xcip->characterWidth); + fs->max_bounds.ascent = cvtINT16toShort(xcip->ascent); + fs->max_bounds.descent = cvtINT16toShort(xcip->descent); + fs->max_bounds.attributes = xcip->attributes; + } +#else + /* XXX the next two statements won't work if short isn't 16 bits */ + fs->min_bounds = * (XCharStruct *) &reply.minBounds; + fs->max_bounds = * (XCharStruct *) &reply.maxBounds; +#endif /* MUSTCOPY */ + + fs->n_properties = reply.nFontProps; + /* + * if no properties defined for the font, then it is bad + * font, but shouldn't try to read nothing. + */ + fs->properties = NULL; + if (fs->n_properties > 0) { + nbytes = reply.nFontProps * sizeof(XFontProp); + fs->properties = (XFontProp *) Xmalloc ((unsigned) nbytes); + nbytes = reply.nFontProps * SIZEOF(xFontProp); + if (! fs->properties) { + Xfree((char *) fs); + _XEatData(dpy, (unsigned long) + (nbytes + reply.nCharInfos * SIZEOF(xCharInfo))); + return (XFontStruct *)NULL; + } + _XRead32 (dpy, (long *)fs->properties, nbytes); + } + /* + * If no characters in font, then it is a bad font, but + * shouldn't try to read nothing. + */ + /* have to unpack charinfos on some machines (CRAY) */ + fs->per_char = NULL; + if (reply.nCharInfos > 0){ + nbytes = reply.nCharInfos * sizeof(XCharStruct); + if (! (fs->per_char = (XCharStruct *) Xmalloc ((unsigned) nbytes))) { + if (fs->properties) Xfree((char *) fs->properties); + Xfree((char *) fs); + _XEatData(dpy, (unsigned long) + (reply.nCharInfos * SIZEOF(xCharInfo))); + return (XFontStruct *)NULL; + } + +#ifdef MUSTCOPY + { + register XCharStruct *cs = fs->per_char; + register int i; + + for (i = 0; i < reply.nCharInfos; i++, cs++) { + xCharInfo xcip; + + _XRead(dpy, (char *)&xcip, SIZEOF(xCharInfo)); + cs->lbearing = cvtINT16toShort(xcip.leftSideBearing); + cs->rbearing = cvtINT16toShort(xcip.rightSideBearing); + cs->width = cvtINT16toShort(xcip.characterWidth); + cs->ascent = cvtINT16toShort(xcip.ascent); + cs->descent = cvtINT16toShort(xcip.descent); + cs->attributes = xcip.attributes; + } + } +#else + nbytes = reply.nCharInfos * SIZEOF(xCharInfo); + _XRead16 (dpy, (char *)fs->per_char, nbytes); +#endif + } + + /* call out to any extensions interested */ + for (ext = dpy->ext_procs; ext; ext = ext->next) + if (ext->create_Font) (*ext->create_Font)(dpy, fs, &ext->codes); + return fs; +} + +#ifdef USE_XF86BIGFONT + +/* Magic cookie for finding the right XExtData structure on the display's + extension list. */ +static int XF86BigfontNumber = 1040697125; + +static int +_XF86BigfontFreeCodes ( + XExtData *extension) +{ + /* Don't Xfree(extension->private_data) because it is on the same malloc + chunk as extension. */ + /* Don't Xfree(extension->private_data->codes) because this is shared with + the display's ext_procs list. */ + return 0; +} + +static XF86BigfontCodes * +_XF86BigfontCodes ( + register Display *dpy) +{ + XEDataObject dpy_union; + XExtData *pData; + XF86BigfontCodes *pCodes; + char *envval; + + dpy_union.display = dpy; + + /* If the server is known to support the XF86Bigfont extension, + * return the extension codes. If the server is known to not support + * the extension, don't bother checking again. + */ + pData = XFindOnExtensionList(XEHeadOfExtensionList(dpy_union), + XF86BigfontNumber); + if (pData) + return (XF86BigfontCodes *) pData->private_data; + + pData = (XExtData *) Xmalloc(sizeof(XExtData) + sizeof(XF86BigfontCodes)); + if (!pData) { + /* Out of luck. */ + return (XF86BigfontCodes *) NULL; + } + + /* See if the server supports the XF86Bigfont extension. */ + envval = getenv("XF86BIGFONT_DISABLE"); /* Let the user disable it. */ + if (envval != NULL && envval[0] != '\0') + pCodes = NULL; + else { + XExtCodes *codes = XInitExtension(dpy, XF86BIGFONTNAME); + if (codes == NULL) + pCodes = NULL; + else { + pCodes = (XF86BigfontCodes *) &pData[1]; + pCodes->codes = codes; + } + } + pData->number = XF86BigfontNumber; + pData->private_data = (XPointer) pCodes; + pData->free_private = _XF86BigfontFreeCodes; + XAddToExtensionList(XEHeadOfExtensionList(dpy_union), pData); + if (pCodes) { + int result; + + /* See if the server supports the XF86BigfontQueryFont request. */ + xXF86BigfontQueryVersionReply reply; + register xXF86BigfontQueryVersionReq *req; + + LockDisplay(dpy); + + GetReq(XF86BigfontQueryVersion, req); + req->reqType = pCodes->codes->major_opcode; + req->xf86bigfontReqType = X_XF86BigfontQueryVersion; + + result = _XReply (dpy, (xReply *) &reply, + (SIZEOF(xXF86BigfontQueryVersionReply) - SIZEOF(xReply)) >> 2, + xFalse); + + UnlockDisplay(dpy); + SyncHandle(); + + if(!result) + goto ignore_extension; + + /* No need to provide backward compatibility with version 1.0. It + was never widely distributed. */ + if (!(reply.majorVersion > 1 + || (reply.majorVersion == 1 && reply.minorVersion >= 1))) + goto ignore_extension; + + pCodes->serverSignature = reply.signature; + pCodes->serverCapabilities = reply.capabilities; + } + return pCodes; + + ignore_extension: + /* No need to Xfree(pCodes) or Xfree(pCodes->codes), see + _XF86BigfontFreeCodes comment. */ + pCodes = (XF86BigfontCodes *) NULL; + pData->private_data = (XPointer) pCodes; + return pCodes; +} + +static int +_XF86BigfontFreeNop ( + XExtData *extension) +{ + return 0; +} + +static XFontStruct * +_XF86BigfontQueryFont ( + register Display *dpy, + XF86BigfontCodes *extcodes, + Font fid, + unsigned long seq) +{ + register XFontStruct *fs; + register long nbytes; + xXF86BigfontQueryFontReply reply; + register xXF86BigfontQueryFontReq *req; + register _XExtension *ext; + _XAsyncHandler async1; + _XAsyncErrorState async1_state; + _XAsyncHandler async2; + _XAsyncErrorState async2_state; + + if (seq) { + async1_state.min_sequence_number = seq; + async1_state.max_sequence_number = seq; + async1_state.error_code = BadName; + async1_state.major_opcode = X_OpenFont; + async1_state.minor_opcode = 0; + async1_state.error_count = 0; + async1.next = dpy->async_handlers; + async1.handler = _XAsyncErrorHandler; + async1.data = (XPointer)&async1_state; + dpy->async_handlers = &async1; + } + + GetReq(XF86BigfontQueryFont, req); + req->reqType = extcodes->codes->major_opcode; + req->xf86bigfontReqType = X_XF86BigfontQueryFont; + req->id = fid; + req->flags = (extcodes->serverCapabilities & XF86Bigfont_CAP_LocalShm + ? XF86Bigfont_FLAGS_Shm : 0); + + /* The function _XQueryFont benefits from a "magic" error handler for + BadFont coming from a X_QueryFont request. (See function _XReply.) + We have to establish an error handler ourselves. */ + async2_state.min_sequence_number = dpy->request; + async2_state.max_sequence_number = dpy->request; + async2_state.error_code = BadFont; + async2_state.major_opcode = extcodes->codes->major_opcode; + async2_state.minor_opcode = X_XF86BigfontQueryFont; + async2_state.error_count = 0; + async2.next = dpy->async_handlers; + async2.handler = _XAsyncErrorHandler; + async2.data = (XPointer)&async2_state; + dpy->async_handlers = &async2; + + if (!_XReply (dpy, (xReply *) &reply, + ((SIZEOF(xXF86BigfontQueryFontReply) - SIZEOF(xReply)) >> 2), xFalse)) { + DeqAsyncHandler(dpy, &async2); + if (seq) + DeqAsyncHandler(dpy, &async1); + return (XFontStruct *)NULL; + } + DeqAsyncHandler(dpy, &async2); + if (seq) + DeqAsyncHandler(dpy, &async1); + if (! (fs = (XFontStruct *) Xmalloc (sizeof (XFontStruct)))) { + _XEatData(dpy, + reply.nFontProps * SIZEOF(xFontProp) + + (reply.nCharInfos > 0 && reply.shmid == (CARD32)(-1) + ? reply.nUniqCharInfos * SIZEOF(xCharInfo) + + (reply.nCharInfos+1)/2 * 2 * sizeof(CARD16) + : 0)); + return (XFontStruct *)NULL; + } + fs->ext_data = NULL; + fs->fid = fid; + fs->direction = reply.drawDirection; + fs->min_char_or_byte2 = reply.minCharOrByte2; + fs->max_char_or_byte2 = reply.maxCharOrByte2; + fs->min_byte1 = reply.minByte1; + fs->max_byte1 = reply.maxByte1; + fs->default_char = reply.defaultChar; + fs->all_chars_exist = reply.allCharsExist; + fs->ascent = cvtINT16toInt (reply.fontAscent); + fs->descent = cvtINT16toInt (reply.fontDescent); + + /* XXX the next two statements won't work if short isn't 16 bits */ + fs->min_bounds = * (XCharStruct *) &reply.minBounds; + fs->max_bounds = * (XCharStruct *) &reply.maxBounds; + + fs->n_properties = reply.nFontProps; + /* + * if no properties defined for the font, then it is bad + * font, but shouldn't try to read nothing. + */ + fs->properties = NULL; + if (fs->n_properties > 0) { + nbytes = reply.nFontProps * sizeof(XFontProp); + fs->properties = (XFontProp *) Xmalloc ((unsigned) nbytes); + nbytes = reply.nFontProps * SIZEOF(xFontProp); + if (! fs->properties) { + Xfree((char *) fs); + _XEatData(dpy, + nbytes + + (reply.nCharInfos > 0 && reply.shmid == (CARD32)(-1) + ? reply.nUniqCharInfos * SIZEOF(xCharInfo) + + (reply.nCharInfos+1)/2 * 2 * sizeof(CARD16) + : 0)); + return (XFontStruct *)NULL; + } + _XRead32 (dpy, (long *)fs->properties, nbytes); + } + + fs->per_char = NULL; + if (reply.nCharInfos > 0) { + /* fprintf(stderr, "received font metrics, nCharInfos = %d, nUniqCharInfos = %d, shmid = %d\n", reply.nCharInfos, reply.nUniqCharInfos, reply.shmid); */ + if (reply.shmid == (CARD32)(-1)) { + xCharInfo* pUniqCI; + CARD16* pIndex2UniqIndex; + int i; + + nbytes = reply.nUniqCharInfos * SIZEOF(xCharInfo) + + (reply.nCharInfos+1)/2 * 2 * sizeof(CARD16); + pUniqCI = (xCharInfo *) Xmalloc (nbytes); + if (!pUniqCI) { + if (fs->properties) Xfree((char *) fs->properties); + Xfree((char *) fs); + _XEatData(dpy, nbytes); + return (XFontStruct *)NULL; + } + if (! (fs->per_char = (XCharStruct *) Xmalloc (reply.nCharInfos * sizeof(XCharStruct)))) { + Xfree((char *) pUniqCI); + if (fs->properties) Xfree((char *) fs->properties); + Xfree((char *) fs); + _XEatData(dpy, nbytes); + return (XFontStruct *)NULL; + } + _XRead16 (dpy, (char *) pUniqCI, nbytes); + pIndex2UniqIndex = (CARD16*) (pUniqCI + reply.nUniqCharInfos); + for (i = 0; i < reply.nCharInfos; i++) { + if (pIndex2UniqIndex[i] >= reply.nUniqCharInfos) { + fprintf(stderr, "_XF86BigfontQueryFont: server returned wrong data\n"); + Xfree((char *) pUniqCI); + if (fs->properties) Xfree((char *) fs->properties); + Xfree((char *) fs); + return (XFontStruct *)NULL; + } + /* XXX the next statement won't work if short isn't 16 bits */ + fs->per_char[i] = * (XCharStruct *) &pUniqCI[pIndex2UniqIndex[i]]; + } + Xfree((char *) pUniqCI); + } else { +#ifdef HAS_SHM + XExtData *pData; + XEDataObject fs_union; + char *addr; + + pData = (XExtData *) Xmalloc(sizeof(XExtData)); + if (!pData) { + if (fs->properties) Xfree((char *) fs->properties); + Xfree((char *) fs); + return (XFontStruct *)NULL; + } + + /* In some cases (e.g. an ssh daemon forwarding an X session to + a remote machine) it is possible that the X server thinks we + are running on the same machine (because getpeername() and + LocalClient() cannot know about the forwarding) but we are + not really local. Therefore, when we attach the first shared + memory segment, we verify that we are on the same machine as + the X server by checking that 1. shmat() succeeds, 2. the + segment has a sufficient size, 3. it contains the X server's + signature. Then we set the CAP_VerifiedLocal bit to indicate + the verification was successful. */ + + if ((addr = shmat(reply.shmid, NULL, SHM_RDONLY)) == (char *)-1) { + if (extcodes->serverCapabilities & CAP_VerifiedLocal) + fprintf(stderr, "_XF86BigfontQueryFont: could not attach shm segment\n"); + Xfree((char *) pData); + if (fs->properties) Xfree((char *) fs->properties); + Xfree((char *) fs); + /* Stop requesting shared memory transport from now on. */ + extcodes->serverCapabilities &= ~ XF86Bigfont_CAP_LocalShm; + return (XFontStruct *)NULL; + } + + if (!(extcodes->serverCapabilities & CAP_VerifiedLocal)) { + struct shmid_ds buf; + if (!(shmctl(reply.shmid, IPC_STAT, &buf) >= 0 + && buf.shm_segsz >= reply.shmsegoffset + reply.nCharInfos * sizeof(XCharStruct) + sizeof(CARD32) + && *(CARD32 *)(addr + reply.shmsegoffset + reply.nCharInfos * sizeof(XCharStruct)) == extcodes->serverSignature)) { + shmdt(addr); + Xfree((char *) pData); + if (fs->properties) Xfree((char *) fs->properties); + Xfree((char *) fs); + /* Stop requesting shared memory transport from now on. */ + extcodes->serverCapabilities &= ~ XF86Bigfont_CAP_LocalShm; + return (XFontStruct *)NULL; + } + extcodes->serverCapabilities |= CAP_VerifiedLocal; + } + + pData->number = XF86BigfontNumber; + pData->private_data = (XPointer) addr; + pData->free_private = _XF86BigfontFreeNop; + fs_union.font = fs; + XAddToExtensionList(XEHeadOfExtensionList(fs_union), pData); + + fs->per_char = (XCharStruct *) (addr + reply.shmsegoffset); +#else + fprintf(stderr, "_XF86BigfontQueryFont: try recompiling libX11 with HasShm, Xserver has shm support\n"); + if (fs->properties) Xfree((char *) fs->properties); + Xfree((char *) fs); + /* Stop requesting shared memory transport from now on. */ + extcodes->serverCapabilities &= ~ XF86Bigfont_CAP_LocalShm; + return (XFontStruct *)NULL; +#endif + } + } + + /* call out to any extensions interested */ + for (ext = dpy->ext_procs; ext; ext = ext->next) + if (ext->create_Font) (*ext->create_Font)(dpy, fs, &ext->codes); + return fs; +} + +void +_XF86BigfontFreeFontMetrics (XFontStruct *fs) +{ +#ifdef HAS_SHM + XExtData *pData; + XEDataObject fs_union; + + fs_union.font = fs; + if ((pData = XFindOnExtensionList(XEHeadOfExtensionList(fs_union), + XF86BigfontNumber))) + shmdt ((char *) pData->private_data); + else + Xfree ((char *) fs->per_char); +#else + Xfree ((char *) fs->per_char); +#endif +} + +#endif /* USE_XF86BIGFONT */ + +int _XF86LoadQueryLocaleFont( + Display *dpy, + _Xconst char *name, + XFontStruct **xfp, + Font *fidp) +{ + int l; + const char *charset, *p; + char buf[256]; + XFontStruct *fs; + XLCd lcd; + + if (!name) + return 0; + l = strlen(name); + if (l < 2 || name[l - 1] != '*' || name[l - 2] != '-') + return 0; + charset = NULL; + /* next three lines stolen from _XkbGetCharset() */ + lcd = _XlcCurrentLC(); + if ((lcd = _XlcCurrentLC()) != 0) + charset = XLC_PUBLIC(lcd, encoding_name); + if (!charset || (p = strrchr(charset, '-')) == 0 || p == charset || p[1] == 0 || (p[1] == '*' && p[2] == 0)) { + /* prefer latin1 if no encoding found */ + charset = "ISO8859-1"; + p = charset + 7; + } + if (l - 2 - (p - charset) < 0) + return 0; + if (_XlcNCompareISOLatin1(name + l - 2 - (p - charset), charset, p - charset)) + return 0; + if (strlen(p + 1) + l - 1 >= sizeof(buf) - 1) + return 0; + strcpy(buf, name); + strcpy(buf + l - 1, p + 1); + fs = XLoadQueryFont(dpy, buf); + if (!fs) + return 0; + if (xfp) { + *xfp = fs; + if (fidp) + *fidp = fs->fid; + } else if (fidp) { + if (fs->per_char) { +#ifdef USE_XF86BIGFONT + _XF86BigfontFreeFontMetrics(fs); +#else + Xfree ((char *) fs->per_char); +#endif + } + _XFreeExtData(fs->ext_data); + if (fs->properties) + Xfree ((char *) fs->properties); + *fidp = fs->fid; + Xfree ((char *) fs); + } else { + XFreeFont(dpy, fs); + } + return 1; +} |