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/*
* Copyright © 2011 Intel Corporation
*
* 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 (including the next
* paragraph) 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.
*/
/** @file glx-string-sanity.c
* Sanity check the various GLX extension strings that application can query.
*
* This test reproduces Mesa bug #56057.
*/
#include <stdbool.h>
#include "piglit-util-gl.h"
#include "piglit-glx-util.h"
static const char *
eat_whitespace(const char *s)
{
/* Page 17 of the GLX 1.4 spec says:
*
* "The string is zero-terminated and contains a space-seperated
* list of extension names."
*
* It doesn't say whitespace. It just says space.
*/
while (*s == ' ' && *s != '\0')
s++;
return s;
}
static const char *
eat_characters(const char *s)
{
while (*s != ' ' && *s != '\0')
s++;
return s;
}
static const char *
find_extension(const char *haystack, const char *needle, size_t needle_length)
{
while ((haystack = strstr(haystack, needle)) != NULL) {
if (haystack[needle_length] == '\0'
|| haystack[needle_length] == ' ')
break;
}
return haystack;
}
static bool
validate_string(const char *string, const char *name)
{
bool pass = true;
while (*string != '\0') {
string = eat_whitespace(string);
if (*string == '\0')
break;
if (strncmp("GLX_", string, 4) != 0) {
char junk[15];
/* Since the extension string may be very long, just
* log a few characters.
*/
strncpy(junk, string, sizeof(junk));
junk[sizeof(junk) - 1] = '\0';
fprintf(stderr, "%s contains junk: %s\n", name, junk);
pass = false;
}
string = eat_characters(string);
}
return pass;
}
int
main(int argc, char **argv)
{
bool pass = true;
const char *client_string;
const char *server_string;
const char *unified_string;
char *buf;
Display *dpy = XOpenDisplay(NULL);
if (dpy == NULL) {
fprintf(stderr, "couldn't open display\n");
piglit_report_result(PIGLIT_FAIL);
}
/* First, make sure that all the strings have the correct format.
*/
server_string = glXQueryServerString(dpy, 0, GLX_EXTENSIONS);
pass = validate_string(server_string, "server extensions string")
&& pass;
client_string = glXGetClientString(dpy, GLX_EXTENSIONS);
pass = validate_string(client_string, "client extensions string")
&& pass;
unified_string = glXQueryExtensionsString(dpy, 0);
pass = validate_string(unified_string, "unified extensions string")
&& pass;
/* Now make sure that any string listed in both the server string and
* the client string is listed in the unified string.
*
* Also make sure that any string *not* listed in the client string is
* *not* listed in the unified string. Since there are several
* "client only" extensions (e.g., GLX_ARB_get_proc_address), it is
* valid for a string to not be in the server string when it is listed
* in the unified string.
*/
buf = malloc(strlen(server_string) + 1);
while (*server_string != '\0') {
const char *client;
const char *end;
size_t bytes;
server_string = eat_whitespace(server_string);
if (*server_string == '\0')
break;
end = eat_characters(server_string);
bytes = (size_t)(end - server_string);
memcpy(buf, server_string, bytes);
buf[bytes] = '\0';
/* Try to find the extension in the client extension list.
*/
client = find_extension(client_string, buf, bytes);
if (client != NULL) {
if (find_extension(unified_string, buf, bytes) == NULL) {
fprintf(stderr,
"%s found in both client and server "
"extension strings, but missing from "
"unified string.\n",
buf);
pass = false;
}
} else {
if (find_extension(unified_string, buf, bytes) != NULL) {
fprintf(stderr,
"%s not found in client extension "
"string, but found in unified "
"string.\n",
buf);
pass = false;
}
}
server_string = end;
}
free(buf);
XCloseDisplay(dpy);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
return 0;
}
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