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xenocara/lib/libX11/modules/im/ximcp/imLcIm.c
matthieu 8ef0df6aa5 import from X.Org 7.2RC2
2006-11-25 16:33:55 +00:00

733 lines
20 KiB
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/* $Xorg: imLcIm.c,v 1.3 2000/08/17 19:45:14 cpqbld Exp $ */
/******************************************************************
Copyright 1992, 1993, 1994 by FUJITSU LIMITED
Copyright 1993 by Digital Equipment Corporation
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, and that the name of FUJITSU LIMITED and
Digital Equipment Corporation not be used in advertising or publicity
pertaining to distribution of the software without specific, written
prior permission. FUJITSU LIMITED and Digital Equipment Corporation
makes no representations about the suitability of this software for
any purpose. It is provided "as is" without express or implied
warranty.
FUJITSU LIMITED AND DIGITAL EQUIPMENT CORPORATION DISCLAIM ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
FUJITSU LIMITED AND DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR
ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.
Author: Takashi Fujiwara FUJITSU LIMITED
fujiwara@a80.tech.yk.fujitsu.co.jp
Modifier: Franky Ling Digital Equipment Corporation
frankyling@hgrd01.enet.dec.com
******************************************************************/
/* $XFree86: xc/lib/X11/imLcIm.c,v 1.12 2003/09/06 14:06:32 pascal Exp $ */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <X11/Xmd.h>
#include <X11/Xatom.h>
#include <X11/Xos.h>
#include "Xlibint.h"
#include "Xlcint.h"
#include "XlcPublic.h"
#include "XlcPubI.h"
#include "Ximint.h"
#include <ctype.h>
#include <assert.h>
#ifdef COMPOSECACHE
# include <sys/types.h>
# include <sys/stat.h>
# include <sys/mman.h>
# include <langinfo.h>
#endif
#ifdef COMPOSECACHE
/* include trailing '/' for cache directory, file prefix otherwise */
#define XIM_GLOBAL_CACHE_DIR "/var/cache/libx11/compose/"
#define XIM_HOME_CACHE_DIR "/.compose-cache/"
#define XIM_CACHE_MAGIC ('X' | 'i'<<8 | 'm'<<16 | 'C'<<24)
#define XIM_CACHE_VERSION 4
#define XIM_CACHE_TREE_ALIGNMENT 4
#define XIM_HASH_PRIME_1 13
#define XIM_HASH_PRIME_2 1234096939
typedef INT32 DTStructIndex;
struct _XimCacheStruct {
INT32 id;
INT32 version;
DTStructIndex tree;
DTStructIndex mb;
DTStructIndex wc;
DTStructIndex utf8;
DTStructIndex size;
DTIndex top;
DTIndex treeused;
DTCharIndex mbused;
DTCharIndex wcused;
DTCharIndex utf8used;
char fname[1];
/* char encoding[1] */
};
Private struct _XimCacheStruct* _XimCache_mmap = NULL;
Private DefTreeBase _XimCachedDefaultTreeBase;
Private int _XimCachedDefaultTreeRefcount = 0;
#endif
Public Bool
_XimCheckIfLocalProcessing(im)
Xim im;
{
FILE *fp;
char *name;
if(strcmp(im->core.im_name, "") == 0) {
name = _XlcFileName(im->core.lcd, COMPOSE_FILE);
if (name != (char *)NULL) {
fp = _XFopenFile (name, "r");
Xfree(name);
if (fp != (FILE *)NULL) {
fclose(fp);
return(True);
}
}
return(False);
} else if(strcmp(im->core.im_name, "local") == 0 ||
strcmp(im->core.im_name, "none" ) == 0 ) {
return(True);
}
return(False);
}
Private void
XimFreeDefaultTree(
DefTreeBase *b)
{
if (!b) return;
if (b->tree == NULL) return;
#ifdef COMPOSECACHE
if (b->tree == _XimCachedDefaultTreeBase.tree) {
_XimCachedDefaultTreeRefcount--;
/* No deleting, it's a cache after all. */
return;
}
#endif
Xfree (b->tree);
if (b->mb) Xfree (b->mb);
if (b->wc) Xfree (b->wc);
if (b->utf8) Xfree (b->utf8);
b->tree = NULL;
b->mb = NULL;
b->wc = NULL;
b->utf8 = NULL;
b->treeused = b->treesize = 0;
b->mbused = b->mbsize = 0;
b->wcused = b->wcsize = 0;
b->utf8used = b->utf8size = 0;
}
Public void
_XimLocalIMFree(
Xim im)
{
XimFreeDefaultTree(&im->private.local.base);
im->private.local.top = 0;
if(im->core.im_resources) {
Xfree(im->core.im_resources);
im->core.im_resources = NULL;
}
if(im->core.ic_resources) {
Xfree(im->core.ic_resources);
im->core.ic_resources = NULL;
}
if(im->core.im_values_list) {
Xfree(im->core.im_values_list);
im->core.im_values_list = NULL;
}
if(im->core.ic_values_list) {
Xfree(im->core.ic_values_list);
im->core.ic_values_list = NULL;
}
if(im->core.styles) {
Xfree(im->core.styles);
im->core.styles = NULL;
}
if(im->core.res_name) {
Xfree(im->core.res_name);
im->core.res_name = NULL;
}
if(im->core.res_class) {
Xfree(im->core.res_class);
im->core.res_class = NULL;
}
if(im->core.im_name) {
Xfree(im->core.im_name);
im->core.im_name = NULL;
}
if (im->private.local.ctom_conv) {
_XlcCloseConverter(im->private.local.ctom_conv);
im->private.local.ctom_conv = NULL;
}
if (im->private.local.ctow_conv) {
_XlcCloseConverter(im->private.local.ctow_conv);
im->private.local.ctow_conv = NULL;
}
if (im->private.local.ctoutf8_conv) {
_XlcCloseConverter(im->private.local.ctoutf8_conv);
im->private.local.ctoutf8_conv = NULL;
}
if (im->private.local.cstomb_conv) {
_XlcCloseConverter(im->private.local.cstomb_conv);
im->private.local.cstomb_conv = NULL;
}
if (im->private.local.cstowc_conv) {
_XlcCloseConverter(im->private.local.cstowc_conv);
im->private.local.cstowc_conv = NULL;
}
if (im->private.local.cstoutf8_conv) {
_XlcCloseConverter(im->private.local.cstoutf8_conv);
im->private.local.cstoutf8_conv = NULL;
}
if (im->private.local.ucstoc_conv) {
_XlcCloseConverter(im->private.local.ucstoc_conv);
im->private.local.ucstoc_conv = NULL;
}
if (im->private.local.ucstoutf8_conv) {
_XlcCloseConverter(im->private.local.ucstoutf8_conv);
im->private.local.ucstoutf8_conv = NULL;
}
return;
}
Private Status
_XimLocalCloseIM(
XIM xim)
{
Xim im = (Xim)xim;
XIC ic;
XIC next;
ic = im->core.ic_chain;
im->core.ic_chain = NULL;
while (ic) {
(*ic->methods->destroy) (ic);
next = ic->core.next;
Xfree ((char *) ic);
ic = next;
}
_XimLocalIMFree(im);
_XimDestroyIMStructureList(im);
return(True);
}
Public char *
_XimLocalGetIMValues(
XIM xim,
XIMArg *values)
{
Xim im = (Xim)xim;
XimDefIMValues im_values;
_XimGetCurrentIMValues(im, &im_values);
return(_XimGetIMValueData(im, (XPointer)&im_values, values,
im->core.im_resources, im->core.im_num_resources));
}
Public char *
_XimLocalSetIMValues(
XIM xim,
XIMArg *values)
{
Xim im = (Xim)xim;
XimDefIMValues im_values;
char *name = (char *)NULL;
_XimGetCurrentIMValues(im, &im_values);
name = _XimSetIMValueData(im, (XPointer)&im_values, values,
im->core.im_resources, im->core.im_num_resources);
_XimSetCurrentIMValues(im, &im_values);
return(name);
}
#ifdef COMPOSECACHE
Private Bool
_XimReadCachedDefaultTree(
int fd_cache,
const char *name,
const char *encoding,
DTStructIndex size)
{
struct _XimCacheStruct* m;
int namelen = strlen (name) + 1;
int encodinglen = strlen (encoding) + 1;
m = mmap (NULL, size, PROT_READ, MAP_PRIVATE, fd_cache, 0);
if (m == NULL || m == MAP_FAILED)
return False;
assert (m->id == XIM_CACHE_MAGIC);
assert (m->version == XIM_CACHE_VERSION);
if (size != m->size ||
size < XOffsetOf (struct _XimCacheStruct, fname) + namelen + encodinglen) {
fprintf (stderr, "Ignoring broken XimCache %s [%s]\n", name, encoding);
munmap (m, size);
return False;
}
if (strncmp (name, m->fname, namelen) != 0) {
/* m->fname may *not* be terminated - but who cares here */
fprintf (stderr, "Filename hash clash - expected %s, got %s\n",
name, m->fname);
munmap (m, size);
return False;
}
if (strncmp (encoding, m->fname + namelen, encodinglen) != 0) {
/* m->fname+namelen may *not* be terminated - but who cares here */
fprintf (stderr, "Enoding hash clash - expected %s, got %s\n",
encoding, m->fname + namelen);
munmap (m, size);
return False;
}
_XimCache_mmap = m;
_XimCachedDefaultTreeBase.tree = (DefTree *) (((char *) m) + m->tree);
_XimCachedDefaultTreeBase.mb = (((char *) m) + m->mb);
_XimCachedDefaultTreeBase.wc = (wchar_t *) (((char *) m) + m->wc);
_XimCachedDefaultTreeBase.utf8 = (((char *) m) + m->utf8);
_XimCachedDefaultTreeBase.treeused = m->treeused;
_XimCachedDefaultTreeBase.mbused = m->mbused;
_XimCachedDefaultTreeBase.wcused = m->wcused;
_XimCachedDefaultTreeBase.utf8used = m->utf8used;
/* treesize etc. is ignored because only used during parsing */
_XimCachedDefaultTreeRefcount = 0;
/* fprintf (stderr, "read cached tree at %p: %s\n", (void *) m, name); */
return True;
}
Private unsigned int strToHash (
const char *name)
{
unsigned int hash = 0;
while (*name)
hash = hash * XIM_HASH_PRIME_1 + *(unsigned const char *)name++;
return hash % XIM_HASH_PRIME_2;
}
/* Returns read-only fd of cache file, -1 if none.
* Sets *res to cache filename if safe. Sets *size to file size of cache. */
Private int _XimCachedFileName (
const char *dir, const char *name,
const char *intname, const char *encoding,
uid_t uid, int isglobal, char **res, off_t *size)
{
struct stat st_name, st;
int fd;
unsigned int len, hash, hash2;
struct _XimCacheStruct *m;
/* There are some races here with 'dir', but we are either in our own home
* or the global cache dir, and not inside some public writable dir */
/* fprintf (stderr, "XimCachedFileName for dir %s name %s intname %s encoding %s uid %d\n", dir, name, intname, encoding, uid); */
if (stat (name, &st_name) == -1 || ! S_ISREG (st_name.st_mode)
|| stat (dir, &st) == -1 || ! S_ISDIR (st.st_mode) || st.st_uid != uid
|| (st.st_mode & 0022) != 0000) {
*res = NULL;
return -1;
}
len = strlen (dir);
hash = strToHash (intname);
hash2 = strToHash (encoding);
*res = Xmalloc (len + 1 + 27 + 1); /* Max VERSION 9999 */
if (len == 0 || dir [len-1] != '/')
sprintf (*res, "%s/%c%d_%03x_%08x_%08x", dir, _XimGetMyEndian(),
XIM_CACHE_VERSION, sizeof (DefTree), hash, hash2);
else
sprintf (*res, "%s%c%d_%03x_%08x_%08x", dir, _XimGetMyEndian(),
XIM_CACHE_VERSION, sizeof (DefTree), hash, hash2);
/* fprintf (stderr, "-> %s\n", *res); */
if ( (fd = _XOpenFile (*res, O_RDONLY)) == -1)
return -1;
if (fstat (fd, &st) == -1) {
Xfree (*res);
*res = NULL;
close (fd);
return -1;
}
*size = st.st_size;
if (! S_ISREG (st.st_mode) || st.st_uid != uid
|| (st.st_mode & 0022) != 0000 || st.st_mtime <= st_name.st_mtime
|| (st.st_mtime < time (NULL) - 24*60*60 && ! isglobal)) {
close (fd);
if (unlink (*res) != 0) {
Xfree (*res);
*res = NULL; /* cache is not safe */
}
return -1;
}
m = mmap (NULL, sizeof (struct _XimCacheStruct), PROT_READ, MAP_PRIVATE,
fd, 0);
if (m == NULL || m == MAP_FAILED) {
close (fd);
Xfree (*res);
*res = NULL;
return -1;
}
if (*size < sizeof (struct _XimCacheStruct) || m->id != XIM_CACHE_MAGIC) {
munmap (m, sizeof (struct _XimCacheStruct));
close (fd);
fprintf (stderr, "Ignoring broken XimCache %s\n", *res);
Xfree (*res);
*res = NULL;
return -1;
}
if (m->version != XIM_CACHE_VERSION) {
munmap (m, sizeof (struct _XimCacheStruct));
close (fd);
if (unlink (*res) != 0) {
Xfree (*res);
*res = NULL; /* cache is not safe */
}
return -1;
}
munmap (m, sizeof (struct _XimCacheStruct));
return fd;
}
Private Bool _XimLoadCache (
int fd,
const char *name,
const char *encoding,
off_t size,
Xim im)
{
if (_XimCache_mmap ||
_XimReadCachedDefaultTree (fd, name, encoding, size)) {
_XimCachedDefaultTreeRefcount++;
memcpy (&im->private.local.base, &_XimCachedDefaultTreeBase,
sizeof (_XimCachedDefaultTreeBase));
im->private.local.top = _XimCache_mmap->top;
return True;
}
return False;
}
Private void
_XimWriteCachedDefaultTree(
const char *name,
const char *encoding,
const char *cachename,
Xim im)
{
int fd;
FILE *fp;
struct _XimCacheStruct *m;
int msize = (XOffsetOf(struct _XimCacheStruct, fname)
+ strlen(name) + strlen(encoding) + 2
+ XIM_CACHE_TREE_ALIGNMENT-1) & -XIM_CACHE_TREE_ALIGNMENT;
DefTreeBase *b = &im->private.local.base;
if (! b->tree && ! (b->tree = Xmalloc (sizeof(DefTree))) )
return;
if (! b->mb && ! (b->mb = Xmalloc (1)) )
return;
if (! b->wc && ! (b->wc = Xmalloc (sizeof(wchar_t))) )
return;
if (! b->utf8 && ! (b->utf8 = Xmalloc (1)) )
return;
/* First entry is always unused */
memset (b->tree, 0, sizeof(DefTree));
b->mb[0] = 0;
b->wc[0] = 0;
b->utf8[0] = 0;
m = Xmalloc (msize);
memset (m, 0, msize);
m->id = XIM_CACHE_MAGIC;
m->version = XIM_CACHE_VERSION;
m->top = im->private.local.top;
m->treeused = b->treeused;
m->mbused = b->mbused;
m->wcused = b->wcused;
m->utf8used = b->utf8used;
/* Tree first, then wide chars, then the rest due to alignment */
m->tree = msize;
m->wc = msize + sizeof (DefTree) * m->treeused;
m->mb = m->wc + sizeof (wchar_t) * m->wcused;
m->utf8 = m->mb + m->mbused;
m->size = m->utf8 + m->utf8used;
strcpy (m->fname, name);
strcpy (m->fname+strlen(name)+1, encoding);
/* This STILL might be racy on NFS */
if ( (fd = _XOpenFileMode (cachename, O_WRONLY | O_CREAT | O_EXCL,
0600)) < 0)
return;
if (! (fp = fdopen (fd, "wb")) ) {
close (fd);
return;
}
fwrite (m, msize, 1, fp);
fwrite (im->private.local.base.tree, sizeof(DefTree), m->treeused, fp);
fwrite (im->private.local.base.wc, sizeof(wchar_t), m->wcused, fp);
fwrite (im->private.local.base.mb, 1, m->mbused, fp);
fwrite (im->private.local.base.utf8, 1, m->utf8used, fp);
if (fclose (fp) != 0)
unlink (cachename);
_XimCache_mmap = m;
memcpy (&_XimCachedDefaultTreeBase, &im->private.local.base,
sizeof (_XimCachedDefaultTreeBase));
/* fprintf (stderr, "wrote tree %s size %ld to %s\n", name, m->size, cachename); */
}
#endif
Private void
_XimCreateDefaultTree(
Xim im)
{
FILE *fp = NULL;
char *name, *tmpname = NULL, *intname;
char *cachename = NULL;
/* Should use getpwent() instead of $HOME (cross-platform?) */
char *home = getenv("HOME");
char *cachedir = NULL;
char *tmpcachedir = NULL;
int hl = home ? strlen (home) : 0;
#ifdef COMPOSECACHE
const char *encoding = nl_langinfo (CODESET);
uid_t euid = geteuid ();
gid_t egid = getegid ();
int cachefd = -1;
off_t size;
#endif
name = getenv("XCOMPOSEFILE");
if (name == (char *) NULL) {
if (home != (char *) NULL) {
tmpname = name = Xmalloc(hl + 10 + 1);
if (name != (char *) NULL) {
int fd;
strcpy(name, home);
strcpy(name + hl, "/.XCompose");
if ( (fd = _XOpenFile (name, O_RDONLY)) < 0) {
Xfree (name);
name = tmpname = NULL;
} else
close (fd);
}
}
}
if (name == (char *) NULL) {
tmpname = name = _XlcFileName(im->core.lcd, COMPOSE_FILE);
}
intname = name;
#ifdef COMPOSECACHE
if (getuid () == euid && getgid () == egid && euid != 0) {
char *c;
/* Usage: XCOMPOSECACHE=<cachedir>[=<filename>]
* cachedir: directory of cache files
* filename: internally used name for cache file */
cachedir = getenv("XCOMPOSECACHE");
if (cachedir && (c = strchr (cachedir, '='))) {
tmpcachedir = strdup (cachedir);
intname = tmpcachedir + (c-cachedir) + 1;
tmpcachedir[c-cachedir] = '\0';
cachedir = tmpcachedir;
}
}
if (! cachedir) {
cachefd = _XimCachedFileName (XIM_GLOBAL_CACHE_DIR, name, intname,
encoding, 0, 1, &cachename, &size);
if (cachefd != -1) {
if (_XimLoadCache (cachefd, intname, encoding, size, im)) {
if (tmpcachedir)
Xfree (tmpcachedir);
if (tmpname)
Xfree (tmpname);
if (cachename)
Xfree (cachename);
close (cachefd);
return;
}
close (cachefd);
}
if (cachename)
Xfree (cachename);
cachename = NULL;
}
if (getuid () == euid && getgid () == egid && euid != 0 && home) {
if (! cachedir) {
tmpcachedir = cachedir = Xmalloc (hl+strlen(XIM_HOME_CACHE_DIR)+1);
strcpy (cachedir, home);
strcat (cachedir, XIM_HOME_CACHE_DIR);
}
cachefd = _XimCachedFileName (cachedir, name, intname, encoding,
euid, 0, &cachename, &size);
if (cachefd != -1) {
if (_XimLoadCache (cachefd, intname, encoding, size, im)) {
if (tmpcachedir)
Xfree (tmpcachedir);
if (tmpname)
Xfree (tmpname);
if (cachename)
Xfree (cachename);
close (cachefd);
return;
}
close (cachefd);
}
}
#endif
if (! (fp = _XFopenFile (name, "r"))) {
if (tmpcachedir)
Xfree (tmpcachedir);
if (tmpname)
Xfree (tmpname);
if (cachename)
Xfree (cachename);
return;
}
_XimParseStringFile(fp, im);
fclose(fp);
#ifdef COMPOSECACHE
if (cachename) {
assert (euid != 0);
_XimWriteCachedDefaultTree (intname, encoding, cachename, im);
}
#endif
if (tmpcachedir)
Xfree (tmpcachedir);
if (tmpname)
Xfree (tmpname);
if (cachename)
Xfree (cachename);
}
Private XIMMethodsRec Xim_im_local_methods = {
_XimLocalCloseIM, /* close */
_XimLocalSetIMValues, /* set_values */
_XimLocalGetIMValues, /* get_values */
_XimLocalCreateIC, /* create_ic */
_XimLcctstombs, /* ctstombs */
_XimLcctstowcs, /* ctstowcs */
_XimLcctstoutf8 /* ctstoutf8 */
};
Public Bool
_XimLocalOpenIM(
Xim im)
{
XLCd lcd = im->core.lcd;
XlcConv conv;
XimDefIMValues im_values;
XimLocalPrivateRec* private = &im->private.local;
_XimInitialResourceInfo();
if(_XimSetIMResourceList(&im->core.im_resources,
&im->core.im_num_resources) == False) {
goto Open_Error;
}
if(_XimSetICResourceList(&im->core.ic_resources,
&im->core.ic_num_resources) == False) {
goto Open_Error;
}
_XimSetIMMode(im->core.im_resources, im->core.im_num_resources);
_XimGetCurrentIMValues(im, &im_values);
if(_XimSetLocalIMDefaults(im, (XPointer)&im_values,
im->core.im_resources, im->core.im_num_resources) == False) {
goto Open_Error;
}
_XimSetCurrentIMValues(im, &im_values);
if (!(conv = _XlcOpenConverter(lcd, XlcNCompoundText, lcd, XlcNMultiByte)))
goto Open_Error;
private->ctom_conv = conv;
if (!(conv = _XlcOpenConverter(lcd, XlcNCompoundText, lcd, XlcNWideChar)))
goto Open_Error;
private->ctow_conv = conv;
if (!(conv = _XlcOpenConverter(lcd, XlcNCompoundText, lcd, XlcNUtf8String)))
goto Open_Error;
private->ctoutf8_conv = conv;
if (!(conv = _XlcOpenConverter(lcd, XlcNCharSet, lcd, XlcNMultiByte)))
goto Open_Error;
private->cstomb_conv = conv;
if (!(conv = _XlcOpenConverter(lcd, XlcNCharSet, lcd, XlcNWideChar)))
goto Open_Error;
private->cstowc_conv = conv;
if (!(conv = _XlcOpenConverter(lcd, XlcNCharSet, lcd, XlcNUtf8String)))
goto Open_Error;
private->cstoutf8_conv = conv;
if (!(conv = _XlcOpenConverter(lcd, XlcNUcsChar, lcd, XlcNChar)))
goto Open_Error;
private->ucstoc_conv = conv;
if (!(conv = _XlcOpenConverter(lcd, XlcNUcsChar, lcd, XlcNUtf8String)))
goto Open_Error;
private->ucstoutf8_conv = conv;
private->base.treeused = 1;
private->base.mbused = 1;
private->base.wcused = 1;
private->base.utf8used = 1;
_XimCreateDefaultTree(im);
im->methods = &Xim_im_local_methods;
private->current_ic = (XIC)NULL;
return(True);
Open_Error :
_XimLocalIMFree(im);
return(False);
}
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