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xserver/hw/xfree86/parser/InputClass.c
Peter Hutterer fc4fbe8224 xfree86: add NoMatchFoo directives for InputClass sections 
InputClass sections use various MatchFoo directives to decide which device to
apply to. This usually works fine for specific snippets but has drawbacks for
snippets that apply more generally to a multitude of devices.

This patch adds a NoMatchFoo directive to negate a match, thus allowing
snippets that only apply if a given condition is not set. Specifically, this
allows for more flexible fallback driver matching, it is now possible to use a
snippet that says "assign driver foo, but only if driver bar wasn't already
assigned to it". For example:

Section "InputClass"
   Identifier "libinput for tablets"
   MatchIsTablet "true"
   NoMatchDriver "wacom"
   Driver "libinput"
EndSection

The above only assigns libinput to tablet devices if wacom isn't already
assigned to this device, making it possible to select a specific driver by
installing/uninstalling it.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
2015-12-18 11:56:46 +10:00

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/*
* Copyright (c) 2009 Dan Nicholson
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* 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 AUTHORS OR COPYRIGHT
* HOLDERS 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.
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <string.h>
#include "os.h"
#include "xf86Parser.h"
#include "xf86tokens.h"
#include "Configint.h"
static
xf86ConfigSymTabRec InputClassTab[] = {
{ENDSECTION, "endsection"},
{IDENTIFIER, "identifier"},
{OPTION, "option"},
{DRIVER, "driver"},
{MATCH_PRODUCT, "matchproduct"},
{MATCH_VENDOR, "matchvendor"},
{MATCH_DEVICE_PATH, "matchdevicepath"},
{MATCH_OS, "matchos"},
{MATCH_PNPID, "matchpnpid"},
{MATCH_USBID, "matchusbid"},
{MATCH_DRIVER, "matchdriver"},
{MATCH_TAG, "matchtag"},
{MATCH_LAYOUT, "matchlayout"},
{MATCH_IS_KEYBOARD, "matchiskeyboard"},
{MATCH_IS_POINTER, "matchispointer"},
{MATCH_IS_JOYSTICK, "matchisjoystick"},
{MATCH_IS_TABLET, "matchistablet"},
{MATCH_IS_TOUCHPAD, "matchistouchpad"},
{MATCH_IS_TOUCHSCREEN, "matchistouchscreen"},
{NOMATCH_PRODUCT, "nomatchproduct"},
{NOMATCH_VENDOR, "nomatchvendor"},
{NOMATCH_DEVICE_PATH, "nomatchdevicepath"},
{NOMATCH_OS, "nomatchos"},
{NOMATCH_PNPID, "nomatchpnpid"},
{NOMATCH_USBID, "nomatchusbid"},
{NOMATCH_DRIVER, "nomatchdriver"},
{NOMATCH_TAG, "nomatchtag"},
{NOMATCH_LAYOUT, "nomatchlayout"},
{-1, ""},
};
static void
xf86freeInputClassList(XF86ConfInputClassPtr ptr)
{
XF86ConfInputClassPtr prev;
while (ptr) {
xf86MatchGroup *group, *next;
char **list;
TestFree(ptr->identifier);
TestFree(ptr->driver);
xorg_list_for_each_entry_safe(group, next, &ptr->match_product, entry) {
xorg_list_del(&group->entry);
for (list = group->values; *list; list++)
free(*list);
free(group);
}
xorg_list_for_each_entry_safe(group, next, &ptr->match_vendor, entry) {
xorg_list_del(&group->entry);
for (list = group->values; *list; list++)
free(*list);
free(group);
}
xorg_list_for_each_entry_safe(group, next, &ptr->match_device, entry) {
xorg_list_del(&group->entry);
for (list = group->values; *list; list++)
free(*list);
free(group);
}
xorg_list_for_each_entry_safe(group, next, &ptr->match_os, entry) {
xorg_list_del(&group->entry);
for (list = group->values; *list; list++)
free(*list);
free(group);
}
xorg_list_for_each_entry_safe(group, next, &ptr->match_pnpid, entry) {
xorg_list_del(&group->entry);
for (list = group->values; *list; list++)
free(*list);
free(group);
}
xorg_list_for_each_entry_safe(group, next, &ptr->match_usbid, entry) {
xorg_list_del(&group->entry);
for (list = group->values; *list; list++)
free(*list);
free(group);
}
xorg_list_for_each_entry_safe(group, next, &ptr->match_driver, entry) {
xorg_list_del(&group->entry);
for (list = group->values; *list; list++)
free(*list);
free(group);
}
xorg_list_for_each_entry_safe(group, next, &ptr->match_tag, entry) {
xorg_list_del(&group->entry);
for (list = group->values; *list; list++)
free(*list);
free(group);
}
xorg_list_for_each_entry_safe(group, next, &ptr->match_layout, entry) {
xorg_list_del(&group->entry);
for (list = group->values; *list; list++)
free(*list);
free(group);
}
TestFree(ptr->comment);
xf86optionListFree(ptr->option_lst);
prev = ptr;
ptr = ptr->list.next;
free(prev);
}
}
#define CLEANUP xf86freeInputClassList
#define TOKEN_SEP "|"
enum MatchType {
MATCH_NORMAL,
MATCH_NEGATED,
};
static void
add_group_entry(struct xorg_list *head, char **values, enum MatchType type)
{
xf86MatchGroup *group;
group = malloc(sizeof(*group));
if (group) {
group->is_negated = (type == MATCH_NEGATED);
group->values = values;
xorg_list_add(&group->entry, head);
}
}
XF86ConfInputClassPtr
xf86parseInputClassSection(void)
{
int has_ident = FALSE;
int token;
enum MatchType matchtype;
parsePrologue(XF86ConfInputClassPtr, XF86ConfInputClassRec)
/* Initialize MatchGroup lists */
xorg_list_init(&ptr->match_product);
xorg_list_init(&ptr->match_vendor);
xorg_list_init(&ptr->match_device);
xorg_list_init(&ptr->match_os);
xorg_list_init(&ptr->match_pnpid);
xorg_list_init(&ptr->match_usbid);
xorg_list_init(&ptr->match_driver);
xorg_list_init(&ptr->match_tag);
xorg_list_init(&ptr->match_layout);
while ((token = xf86getToken(InputClassTab)) != ENDSECTION) {
matchtype = MATCH_NORMAL;
switch (token) {
case COMMENT:
ptr->comment = xf86addComment(ptr->comment, xf86_lex_val.str);
break;
case IDENTIFIER:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "Identifier");
if (has_ident == TRUE)
Error(MULTIPLE_MSG, "Identifier");
ptr->identifier = xf86_lex_val.str;
has_ident = TRUE;
break;
case DRIVER:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "Driver");
if (strcmp(xf86_lex_val.str, "keyboard") == 0) {
ptr->driver = strdup("kbd");
free(xf86_lex_val.str);
}
else
ptr->driver = xf86_lex_val.str;
break;
case OPTION:
ptr->option_lst = xf86parseOption(ptr->option_lst);
break;
case NOMATCH_PRODUCT:
matchtype = MATCH_NEGATED;
/* fallthrough */
case MATCH_PRODUCT:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchProduct");
add_group_entry(&ptr->match_product,
xstrtokenize(xf86_lex_val.str, TOKEN_SEP),
matchtype);
free(xf86_lex_val.str);
break;
case NOMATCH_VENDOR:
matchtype = MATCH_NEGATED;
/* fallthrough */
case MATCH_VENDOR:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchVendor");
add_group_entry(&ptr->match_vendor,
xstrtokenize(xf86_lex_val.str, TOKEN_SEP),
matchtype);
free(xf86_lex_val.str);
break;
case NOMATCH_DEVICE_PATH:
matchtype = MATCH_NEGATED;
/* fallthrough */
case MATCH_DEVICE_PATH:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchDevicePath");
add_group_entry(&ptr->match_device,
xstrtokenize(xf86_lex_val.str, TOKEN_SEP),
matchtype);
free(xf86_lex_val.str);
break;
case NOMATCH_OS:
matchtype = MATCH_NEGATED;
/* fallthrough */
case MATCH_OS:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchOS");
add_group_entry(&ptr->match_os, xstrtokenize(xf86_lex_val.str,
TOKEN_SEP),
matchtype);
free(xf86_lex_val.str);
break;
case NOMATCH_PNPID:
matchtype = MATCH_NEGATED;
/* fallthrough */
case MATCH_PNPID:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchPnPID");
add_group_entry(&ptr->match_pnpid,
xstrtokenize(xf86_lex_val.str, TOKEN_SEP),
matchtype);
free(xf86_lex_val.str);
break;
case NOMATCH_USBID:
matchtype = MATCH_NEGATED;
/* fallthrough */
case MATCH_USBID:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchUSBID");
add_group_entry(&ptr->match_usbid,
xstrtokenize(xf86_lex_val.str, TOKEN_SEP),
matchtype);
free(xf86_lex_val.str);
break;
case NOMATCH_DRIVER:
matchtype = MATCH_NEGATED;
/* fallthrough */
case MATCH_DRIVER:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchDriver");
add_group_entry(&ptr->match_driver,
xstrtokenize(xf86_lex_val.str, TOKEN_SEP),
matchtype);
free(xf86_lex_val.str);
break;
case NOMATCH_TAG:
matchtype = MATCH_NEGATED;
/* fallthrough */
case MATCH_TAG:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchTag");
add_group_entry(&ptr->match_tag, xstrtokenize(xf86_lex_val.str,
TOKEN_SEP),
matchtype);
free(xf86_lex_val.str);
break;
case NOMATCH_LAYOUT:
matchtype = MATCH_NEGATED;
/* fallthrough */
case MATCH_LAYOUT:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchLayout");
add_group_entry(&ptr->match_layout,
xstrtokenize(xf86_lex_val.str, TOKEN_SEP),
matchtype);
free(xf86_lex_val.str);
break;
case MATCH_IS_KEYBOARD:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchIsKeyboard");
ptr->is_keyboard.set = xf86getBoolValue(&ptr->is_keyboard.val,
xf86_lex_val.str);
free(xf86_lex_val.str);
if (!ptr->is_keyboard.set)
Error(BOOL_MSG, "MatchIsKeyboard");
break;
case MATCH_IS_POINTER:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchIsPointer");
ptr->is_pointer.set = xf86getBoolValue(&ptr->is_pointer.val,
xf86_lex_val.str);
free(xf86_lex_val.str);
if (!ptr->is_pointer.set)
Error(BOOL_MSG, "MatchIsPointer");
break;
case MATCH_IS_JOYSTICK:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchIsJoystick");
ptr->is_joystick.set = xf86getBoolValue(&ptr->is_joystick.val,
xf86_lex_val.str);
free(xf86_lex_val.str);
if (!ptr->is_joystick.set)
Error(BOOL_MSG, "MatchIsJoystick");
break;
case MATCH_IS_TABLET:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchIsTablet");
ptr->is_tablet.set = xf86getBoolValue(&ptr->is_tablet.val, xf86_lex_val.str);
free(xf86_lex_val.str);
if (!ptr->is_tablet.set)
Error(BOOL_MSG, "MatchIsTablet");
break;
case MATCH_IS_TOUCHPAD:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchIsTouchpad");
ptr->is_touchpad.set = xf86getBoolValue(&ptr->is_touchpad.val,
xf86_lex_val.str);
free(xf86_lex_val.str);
if (!ptr->is_touchpad.set)
Error(BOOL_MSG, "MatchIsTouchpad");
break;
case MATCH_IS_TOUCHSCREEN:
if (xf86getSubToken(&(ptr->comment)) != STRING)
Error(QUOTE_MSG, "MatchIsTouchscreen");
ptr->is_touchscreen.set = xf86getBoolValue(&ptr->is_touchscreen.val,
xf86_lex_val.str);
free(xf86_lex_val.str);
if (!ptr->is_touchscreen.set)
Error(BOOL_MSG, "MatchIsTouchscreen");
break;
case EOF_TOKEN:
Error(UNEXPECTED_EOF_MSG);
break;
default:
Error(INVALID_KEYWORD_MSG, xf86tokenString());
break;
}
}
if (!has_ident)
Error(NO_IDENT_MSG);
#ifdef DEBUG
printf("InputClass section parsed\n");
#endif
return ptr;
}
void
xf86printInputClassSection(FILE * cf, XF86ConfInputClassPtr ptr)
{
const xf86MatchGroup *group;
char *const *cur;
while (ptr) {
fprintf(cf, "Section \"InputClass\"\n");
if (ptr->comment)
fprintf(cf, "%s", ptr->comment);
if (ptr->identifier)
fprintf(cf, "\tIdentifier \"%s\"\n", ptr->identifier);
if (ptr->driver)
fprintf(cf, "\tDriver \"%s\"\n", ptr->driver);
xorg_list_for_each_entry(group, &ptr->match_product, entry) {
fprintf(cf, "\tMatchProduct \"");
for (cur = group->values; *cur; cur++)
fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
*cur);
fprintf(cf, "\"\n");
}
xorg_list_for_each_entry(group, &ptr->match_vendor, entry) {
fprintf(cf, "\tMatchVendor \"");
for (cur = group->values; *cur; cur++)
fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
*cur);
fprintf(cf, "\"\n");
}
xorg_list_for_each_entry(group, &ptr->match_device, entry) {
fprintf(cf, "\tMatchDevicePath \"");
for (cur = group->values; *cur; cur++)
fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
*cur);
fprintf(cf, "\"\n");
}
xorg_list_for_each_entry(group, &ptr->match_os, entry) {
fprintf(cf, "\tMatchOS \"");
for (cur = group->values; *cur; cur++)
fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
*cur);
fprintf(cf, "\"\n");
}
xorg_list_for_each_entry(group, &ptr->match_pnpid, entry) {
fprintf(cf, "\tMatchPnPID \"");
for (cur = group->values; *cur; cur++)
fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
*cur);
fprintf(cf, "\"\n");
}
xorg_list_for_each_entry(group, &ptr->match_usbid, entry) {
fprintf(cf, "\tMatchUSBID \"");
for (cur = group->values; *cur; cur++)
fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
*cur);
fprintf(cf, "\"\n");
}
xorg_list_for_each_entry(group, &ptr->match_driver, entry) {
fprintf(cf, "\tMatchDriver \"");
for (cur = group->values; *cur; cur++)
fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
*cur);
fprintf(cf, "\"\n");
}
xorg_list_for_each_entry(group, &ptr->match_tag, entry) {
fprintf(cf, "\tMatchTag \"");
for (cur = group->values; *cur; cur++)
fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
*cur);
fprintf(cf, "\"\n");
}
xorg_list_for_each_entry(group, &ptr->match_layout, entry) {
fprintf(cf, "\tMatchLayout \"");
for (cur = group->values; *cur; cur++)
fprintf(cf, "%s%s", cur == group->values ? "" : TOKEN_SEP,
*cur);
fprintf(cf, "\"\n");
}
if (ptr->is_keyboard.set)
fprintf(cf, "\tIsKeyboard \"%s\"\n",
ptr->is_keyboard.val ? "yes" : "no");
if (ptr->is_pointer.set)
fprintf(cf, "\tIsPointer \"%s\"\n",
ptr->is_pointer.val ? "yes" : "no");
if (ptr->is_joystick.set)
fprintf(cf, "\tIsJoystick \"%s\"\n",
ptr->is_joystick.val ? "yes" : "no");
if (ptr->is_tablet.set)
fprintf(cf, "\tIsTablet \"%s\"\n",
ptr->is_tablet.val ? "yes" : "no");
if (ptr->is_touchpad.set)
fprintf(cf, "\tIsTouchpad \"%s\"\n",
ptr->is_touchpad.val ? "yes" : "no");
if (ptr->is_touchscreen.set)
fprintf(cf, "\tIsTouchscreen \"%s\"\n",
ptr->is_touchscreen.val ? "yes" : "no");
xf86printOptionList(cf, ptr->option_lst, 1);
fprintf(cf, "EndSection\n\n");
ptr = ptr->list.next;
}
}
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