XKB: Remove component listing support

No-one uses this - not xkbcomp, not GNOME, not KDE.  The preferred way
to deal with component listing (which gives you RMLVO rather than
KcCGST) is to use the XML files on the client side.

Indeed, a couple of hours after making this commit, it emerged that all
*.dir files built with xkbcomp 1.1.1 (released two years ago) and later
have been catastrophically broken and nearly empty.  So I think that's
reasonable proof that no-one uses them.

Signed-off-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

3 files changed, 20 insertions, 335 deletions

diff --git a/xkb/Makefile.am b/xkb/Makefile.am
index fb3ccbf6f..e386ce5a2 100644
--- a/xkb/Makefile.am
+++ b/xkb/Makefile.am
@@ -6,8 +6,7 @@ DDX_SRCS = \
         ddxBeep.c \
         ddxCtrls.c \
         ddxLEDs.c \
-        ddxLoad.c \
-        ddxList.c
+        ddxLoad.c
 
 DIX_SRCS = \
         xkb.c \
diff --git a/xkb/ddxList.c b/xkb/ddxList.c
deleted file mode 100644
index 729c5aecf..000000000
--- a/xkb/ddxList.c
+++ /dev/null
@@ -1,302 +0,0 @@
-/************************************************************
-Copyright (c) 1995 by Silicon Graphics Computer Systems, Inc.
-
-Permission to use, copy, modify, and distribute this
-software and its documentation for any purpose and without
-fee is hereby granted, 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 Silicon Graphics not be 
-used in advertising or publicity pertaining to distribution 
-of the software without specific prior written permission.
-Silicon Graphics makes no representation about the suitability 
-of this software for any purpose. It is provided "as is"
-without any express or implied warranty.
-
-SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS 
-SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 
-AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
-GRAPHICS 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.
-
-********************************************************/
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <stdio.h>
-#include <ctype.h>
-#include <X11/X.h>
-#include <X11/Xos.h>
-#include <X11/Xproto.h>
-#include <X11/keysym.h>
-#include <X11/extensions/XKM.h>
-#include "inputstr.h"
-#include "scrnintstr.h"
-#include "windowstr.h"
-#define	XKBSRV_NEED_FILE_FUNCS
-#include <xkbsrv.h>
-#include <X11/extensions/XI.h>
-
-#ifdef WIN32
-/* from ddxLoad.c */
-#define W32_tmparg " '%s'"
-#define W32_tmpfile ,tmpname
-#define W32_tmplen strlen(tmpname)+3
-#else
-#define W32_tmparg
-#define W32_tmpfile
-#define W32_tmplen 0
-#endif
-
-/***====================================================================***/
-
-static const char *componentDirs[_XkbListNumComponents] = {
-    "keycodes", "types", "compat", "symbols", "geometry"
-};
-
-/***====================================================================***/
-
-static Status
-_AddListComponent(XkbSrvListInfoPtr list,
-                  int what, unsigned flags, char *str, ClientPtr client)
-{
-    int slen, wlen;
-    unsigned char *wire8;
-    unsigned short *wire16;
-    char *tmp;
-
-    if (list->nTotal >= list->maxRtrn) {
-        list->nTotal++;
-        return Success;
-    }
-    tmp = strchr(str, ')');
-    if ((tmp == NULL) && ((tmp = strchr(str, '(')) == NULL)) {
-        slen = strlen(str);
-        while ((slen > 0) && isspace(str[slen - 1])) {
-            slen--;
-        }
-    }
-    else {
-        slen = (tmp - str + 1);
-    }
-    wlen = (((slen + 1) / 2) * 2) + 4;  /* four bytes for flags and length, pad to */
-    /* 2-byte boundary */
-    if ((list->szPool - list->nPool) < wlen) {
-        if (wlen > 1024)
-            list->szPool += XkbPaddedSize(wlen * 2);
-        else
-            list->szPool += 1024;
-        list->pool = realloc(list->pool, list->szPool * sizeof(char));
-        if (!list->pool)
-            return BadAlloc;
-    }
-    wire16 = (unsigned short *) &list->pool[list->nPool];
-    wire8 = (unsigned char *) &wire16[2];
-    wire16[0] = flags;
-    wire16[1] = slen;
-    memcpy(wire8, str, slen);
-    if (client->swapped) {
-        swaps(&wire16[0]);
-        swaps(&wire16[1]);
-    }
-    list->nPool += wlen;
-    list->nFound[what]++;
-    list->nTotal++;
-    return Success;
-}
-
-/***====================================================================***/
-static Status
-XkbDDXListComponent(DeviceIntPtr dev,
-                    int what, XkbSrvListInfoPtr list, ClientPtr client)
-{
-    char *file, *map, *tmp, *buf = NULL;
-    FILE *in;
-    Status status;
-    Bool haveDir;
-
-#ifdef WIN32
-    char tmpname[PATH_MAX];
-#else
-    int rval;
-#endif
-
-    if ((list->pattern[what] == NULL) || (list->pattern[what][0] == '\0'))
-        return Success;
-    file = list->pattern[what];
-    map = strrchr(file, '(');
-    if (map != NULL) {
-        map++;
-        tmp = strrchr(map, ')');
-        if ((tmp == NULL) || (tmp[1] != '\0')) {
-            /* illegal pattern.  No error, but no match */
-            return Success;
-        }
-    }
-
-    in = NULL;
-    haveDir = TRUE;
-#ifdef WIN32
-    strcpy(tmpname, Win32TempDir());
-    strcat(tmpname, "\\xkb_XXXXXX");
-    (void) mktemp(tmpname);
-#endif
-    if (XkbBaseDirectory != NULL) {
-        if ((list->pattern[what][0] == '*') && (list->pattern[what][1] == '\0')) {
-            if (asprintf(&buf, "%s/%s.dir", XkbBaseDirectory,
-                         componentDirs[what]) == -1)
-                buf = NULL;
-            else
-                in = fopen(buf, "r");
-        }
-        if (!in) {
-            haveDir = FALSE;
-            free(buf);
-            if (asprintf
-                (&buf,
-                 "'%s/xkbcomp' '-R%s/%s' -w %ld -l -vlfhpR '%s'" W32_tmparg,
-                 XkbBinDirectory, XkbBaseDirectory, componentDirs[what],
-                 (long) ((xkbDebugFlags < 2) ? 1 :
-                         ((xkbDebugFlags > 10) ? 10 : xkbDebugFlags)),
-                 file W32_tmpfile) == -1)
-                buf = NULL;
-        }
-    }
-    else {
-        if ((list->pattern[what][0] == '*') && (list->pattern[what][1] == '\0')) {
-            if (asprintf(&buf, "%s.dir", componentDirs[what]) == -1)
-                buf = NULL;
-            else
-                in = fopen(buf, "r");
-        }
-        if (!in) {
-            haveDir = FALSE;
-            free(buf);
-            if (asprintf
-                (&buf,
-                 "xkbcomp -R%s -w %ld -l -vlfhpR '%s'" W32_tmparg,
-                 componentDirs[what],
-                 (long) ((xkbDebugFlags < 2) ? 1 :
-                         ((xkbDebugFlags > 10) ? 10 : xkbDebugFlags)),
-                 file W32_tmpfile) == -1)
-                buf = NULL;
-        }
-    }
-    status = Success;
-    if (!haveDir) {
-#ifndef WIN32
-        in = Popen(buf, "r");
-#else
-        if (xkbDebugFlags)
-            DebugF("[xkb] xkbList executes: %s\n", buf);
-        if (System(buf) < 0)
-            ErrorF("[xkb] Could not invoke keymap compiler\n");
-        else
-            in = fopen(tmpname, "r");
-#endif
-    }
-    if (!in) {
-        free(buf);
-#ifdef WIN32
-        unlink(tmpname);
-#endif
-        return BadImplementation;
-    }
-    list->nFound[what] = 0;
-    free(buf);
-    buf = malloc(PATH_MAX * sizeof(char));
-    if (!buf) {
-        fclose(in);
-#ifdef WIN32
-        unlink(tmpname);
-#endif
-        return BadAlloc;
-    }
-    while ((status == Success) && ((tmp = fgets(buf, PATH_MAX, in)) != NULL)) {
-        unsigned flags;
-        register unsigned int i;
-
-        if (*tmp == '#')        /* comment, skip it */
-            continue;
-        if (!strncmp(tmp, "Warning:", 8) || !strncmp(tmp, "        ", 8))
-            /* skip warnings too */
-            continue;
-        flags = 0;
-        /* each line in the listing is supposed to start with two */
-        /* groups of eight characters, which specify the general  */
-        /* flags and the flags that are specific to the component */
-        /* if they're missing, fail with BadImplementation        */
-        for (i = 0; (i < 8) && (status == Success); i++) {      /* read the general flags */
-            if (isalpha(*tmp))
-                flags |= (1L << i);
-            else if (*tmp != '-')
-                status = BadImplementation;
-            tmp++;
-        }
-        if (status != Success)
-            break;
-        if (!isspace(*tmp)) {
-            status = BadImplementation;
-            break;
-        }
-        else
-            tmp++;
-        for (i = 0; (i < 8) && (status == Success); i++) {      /* read the component flags */
-            if (isalpha(*tmp))
-                flags |= (1L << (i + 8));
-            else if (*tmp != '-')
-                status = BadImplementation;
-            tmp++;
-        }
-        if (status != Success)
-            break;
-        if (isspace(*tmp)) {
-            while (isspace(*tmp)) {
-                tmp++;
-            }
-        }
-        else {
-            status = BadImplementation;
-            break;
-        }
-        status = _AddListComponent(list, what, flags, tmp, client);
-    }
-#ifndef WIN32
-    if (haveDir)
-        fclose(in);
-    else if ((rval = Pclose(in)) != 0) {
-        if (xkbDebugFlags)
-            ErrorF("[xkb] xkbcomp returned exit code %d\n", rval);
-    }
-#else
-    fclose(in);
-    unlink(tmpname);
-#endif
-    free(buf);
-    return status;
-}
-
-/***====================================================================***/
-
-/* ARGSUSED */
-Status
-XkbDDXList(DeviceIntPtr dev, XkbSrvListInfoPtr list, ClientPtr client)
-{
-    Status status;
-
-    status = XkbDDXListComponent(dev, _XkbListKeycodes, list, client);
-    if (status == Success)
-        status = XkbDDXListComponent(dev, _XkbListTypes, list, client);
-    if (status == Success)
-        status = XkbDDXListComponent(dev, _XkbListCompat, list, client);
-    if (status == Success)
-        status = XkbDDXListComponent(dev, _XkbListSymbols, list, client);
-    if (status == Success)
-        status = XkbDDXListComponent(dev, _XkbListGeometry, list, client);
-    return status;
-}
diff --git a/xkb/xkb.c b/xkb/xkb.c
index efb178c7c..c67896f06 100644
--- a/xkb/xkb.c
+++ b/xkb/xkb.c
@@ -5620,9 +5620,9 @@ ProcXkbListComponents(ClientPtr client)
     DeviceIntPtr dev;
     xkbListComponentsReply rep;
     unsigned len;
-    int status;
     unsigned char *str;
-    XkbSrvListInfoRec list;
+    uint8_t size;
+    int i;
 
     REQUEST(xkbListComponentsReq);
     REQUEST_AT_LEAST_SIZE(xkbListComponentsReq);
@@ -5632,40 +5632,33 @@ ProcXkbListComponents(ClientPtr client)
 
     CHK_KBD_DEVICE(dev, stuff->deviceSpec, client, DixGetAttrAccess);
 
-    status = Success;
+    /* The request is followed by six Pascal strings (i.e. size in characters
+     * followed by a string pattern) describing what the client wants us to
+     * list.  We don't care, but might as well check they haven't got the
+     * length wrong. */
     str = (unsigned char *) &stuff[1];
-    memset(&list, 0, sizeof(XkbSrvListInfoRec));
-    list.maxRtrn = stuff->maxNames;
-    list.pattern[_XkbListKeycodes] = GetComponentSpec(&str, FALSE, &status);
-    list.pattern[_XkbListTypes] = GetComponentSpec(&str, FALSE, &status);
-    list.pattern[_XkbListCompat] = GetComponentSpec(&str, FALSE, &status);
-    list.pattern[_XkbListSymbols] = GetComponentSpec(&str, FALSE, &status);
-    list.pattern[_XkbListGeometry] = GetComponentSpec(&str, FALSE, &status);
-    if (status != Success)
-        return status;
-    len = str - ((unsigned char *) stuff);
+    for (i = 0; i < 6; i++) {
+        size = *((uint8_t *)str);
+        len = (str + size + 1) - ((unsigned char *) stuff);
+        if ((XkbPaddedSize(len) / 4) > stuff->length)
+            return BadLength;
+        str += (size + 1);
+    }
     if ((XkbPaddedSize(len) / 4) != stuff->length)
         return BadLength;
-    if ((status = XkbDDXList(dev, &list, client)) != Success) {
-        free(list.pool);
-        list.pool = NULL;
-        return status;
-    }
     rep = (xkbListComponentsReply) {
         .type = X_Reply,
         .deviceID = dev->id,
         .sequenceNumber = client->sequence,
-        .length = XkbPaddedSize(list.nPool) / 4,
+        .length = 0,
         .nKeymaps = 0,
-        .nKeycodes = list.nFound[_XkbListKeycodes],
-        .nTypes = list.nFound[_XkbListTypes],
-        .nCompatMaps = list.nFound[_XkbListCompat],
-        .nSymbols = list.nFound[_XkbListSymbols],
-        .nGeometries = list.nFound[_XkbListGeometry],
+        .nKeycodes = 0,
+        .nTypes = 0,
+        .nCompatMaps = 0,
+        .nSymbols = 0,
+        .nGeometries = 0,
         .extra = 0
     };
-    if (list.nTotal > list.maxRtrn)
-        rep.extra = (list.nTotal - list.maxRtrn);
     if (client->swapped) {
         swaps(&rep.sequenceNumber);
         swapl(&rep.length);
@@ -5678,11 +5671,6 @@ ProcXkbListComponents(ClientPtr client)
         swaps(&rep.extra);
     }
     WriteToClient(client, SIZEOF(xkbListComponentsReply), &rep);
-    if (list.nPool && list.pool) {
-        WriteToClient(client, XkbPaddedSize(list.nPool), list.pool);
-        free(list.pool);
-        list.pool = NULL;
-    }
     return Success;
 }