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[client] egl: use new util_hasGLExt helper to check extensions
We previously used strstr, which can be prone to false positives when the name of one extension is a substring of another extension. This commit creates the helper function util_hasGLExt, which asserts that the substring found in extension list is bounded by either spaces or the beginning/end of the string.
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@ -35,6 +35,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
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#include "egl_dynprocs.h"
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#include "common/types.h"
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#include "common/debug.h"
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#include "util.h"
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struct SDLDSState
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{
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@ -199,14 +200,14 @@ static EGLDisplay sdlGetEGLDisplay(void)
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const char *early_exts = eglQueryString(NULL, EGL_EXTENSIONS);
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if (strstr(early_exts, "EGL_KHR_platform_base") != NULL &&
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if (util_hasGLExt(early_exts, "EGL_KHR_platform_base") &&
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g_egl_dynProcs.eglGetPlatformDisplay)
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{
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DEBUG_INFO("Using eglGetPlatformDisplay");
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return g_egl_dynProcs.eglGetPlatformDisplay(platform, native, NULL);
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}
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if (strstr(early_exts, "EGL_EXT_platform_base") != NULL &&
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if (util_hasGLExt(early_exts, "EGL_EXT_platform_base") &&
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g_egl_dynProcs.eglGetPlatformDisplayEXT)
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{
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DEBUG_INFO("Using eglGetPlatformDisplayEXT");
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@ -28,6 +28,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
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#include "app.h"
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#include "common/debug.h"
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#include "util.h"
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#if defined(ENABLE_EGL) || defined(ENABLE_OPENGL)
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#include "egl_dynprocs.h"
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@ -49,14 +50,14 @@ EGLDisplay waylandGetEGLDisplay(void)
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const char *early_exts = eglQueryString(NULL, EGL_EXTENSIONS);
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if (strstr(early_exts, "EGL_KHR_platform_wayland") != NULL &&
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if (util_hasGLExt(early_exts, "EGL_KHR_platform_wayland") &&
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g_egl_dynProcs.eglGetPlatformDisplay)
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{
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DEBUG_INFO("Using eglGetPlatformDisplay");
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return g_egl_dynProcs.eglGetPlatformDisplay(EGL_PLATFORM_WAYLAND_KHR, native, NULL);
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}
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if (strstr(early_exts, "EGL_EXT_platform_wayland") != NULL &&
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if (util_hasGLExt(early_exts, "EGL_EXT_platform_wayland") &&
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g_egl_dynProcs.eglGetPlatformDisplayEXT)
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{
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DEBUG_INFO("Using eglGetPlatformDisplayEXT");
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@ -42,6 +42,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
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#include "app.h"
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#include "common/debug.h"
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#include "common/time.h"
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#include "util.h"
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#define _NET_WM_STATE_REMOVE 0
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#define _NET_WM_STATE_ADD 1
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@ -901,14 +902,14 @@ static EGLDisplay x11GetEGLDisplay(void)
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EGLDisplay ret;
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const char *early_exts = eglQueryString(NULL, EGL_EXTENSIONS);
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if (strstr(early_exts, "EGL_KHR_platform_base") != NULL &&
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if (util_hasGLExt(early_exts, "EGL_KHR_platform_base") &&
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g_egl_dynProcs.eglGetPlatformDisplay)
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{
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DEBUG_INFO("Using eglGetPlatformDisplay");
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ret = g_egl_dynProcs.eglGetPlatformDisplay(EGL_PLATFORM_X11_KHR,
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x11.display, NULL);
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}
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else if (strstr(early_exts, "EGL_EXT_platform_base") != NULL &&
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else if (util_hasGLExt(early_exts, "EGL_EXT_platform_base") &&
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g_egl_dynProcs.eglGetPlatformDisplayEXT)
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{
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DEBUG_INFO("Using eglGetPlatformDisplayEXT");
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@ -32,6 +32,7 @@ void util_cursorToInt(double ex, double ey, int *x, int *y);
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bool util_guestCurToLocal(struct DoublePoint *local);
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void util_localCurToGuest(struct DoublePoint *guest);
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void util_rotatePoint(struct DoublePoint *point);
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bool util_hasGLExt(const char * exts, const char * ext);
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static inline double util_clamp(double x, double min, double max)
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{
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@ -698,7 +698,7 @@ bool egl_render_startup(void * opaque)
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if (g_egl_dynProcs.glEGLImageTargetTexture2DOES)
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{
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if (strstr(client_exts, "EGL_EXT_image_dma_buf_import") != NULL)
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if (util_hasGLExt(client_exts, "EGL_EXT_image_dma_buf_import"))
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{
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/*
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* As of version 455.45.01 NVidia started advertising support for this
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@ -21,9 +21,11 @@ Place, Suite 330, Boston, MA 02111-1307 USA
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#include "main.h"
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#include "common/debug.h"
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#include "common/stringutils.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include <math.h>
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@ -207,3 +209,8 @@ void util_rotatePoint(struct DoublePoint *point)
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break;
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}
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}
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bool util_hasGLExt(const char * exts, const char * ext)
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{
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return str_containsValue(exts, ' ', ext);
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}
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@ -20,6 +20,8 @@ Place, Suite 330, Boston, MA 02111-1307 USA
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#ifndef _H_LG_COMMON_STRINGUTILS
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#define _H_LG_COMMON_STRINGUTILS
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#include <stdbool.h>
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// vsprintf but with buffer allocation
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int valloc_sprintf(char ** str, const char * format, va_list ap)
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__attribute__ ((format (printf, 2, 0)));
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@ -28,4 +30,7 @@ int valloc_sprintf(char ** str, const char * format, va_list ap)
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int alloc_sprintf(char ** str, const char * format, ...)
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__attribute__ ((format (printf, 2, 3)));
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// Find value in a list separated by delimiter.
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bool str_containsValue(const char * list, char delimiter, const char * value);
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#endif
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@ -17,9 +17,13 @@ this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include "common/stringutils.h"
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int valloc_sprintf(char ** str, const char * format, va_list ap)
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{
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@ -64,3 +68,23 @@ int alloc_sprintf(char ** str, const char * format, ...)
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va_end(ap);
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return ret;
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}
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bool str_containsValue(const char * list, char delimiter, const char * value)
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{
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size_t len = strlen(value);
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const char span[] = {delimiter, '\0'};
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while (*list)
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{
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if (*list == delimiter)
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{
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++list;
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continue;
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}
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size_t n = strcspn(list, span);
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if (n == len && strncmp(value, list, n) == 0)
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return true;
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list += n;
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}
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return false;
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}
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