Mesa (mesa_7_7_branch): progs/xdemos: Prevent possible string overflow.
Vinson Lee
vlee at kemper.freedesktop.org
Wed Jan 6 22:57:16 UTC 2010
Module: Mesa
Branch: mesa_7_7_branch
Commit: f4952f040bf61ea856cdcb9cdf8dbb02ff3a6f1e
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=f4952f040bf61ea856cdcb9cdf8dbb02ff3a6f1e
Author: Vinson Lee <vlee at vmware.com>
Date: Wed Jan 6 14:55:02 2010 -0800
progs/xdemos: Prevent possible string overflow.
---
progs/xdemos/glxheads.c | 28 +++++++++++++++++++++++++++-
1 files changed, 27 insertions(+), 1 deletions(-)
diff --git a/progs/xdemos/glxheads.c b/progs/xdemos/glxheads.c
index b1a63d3..be77ad6 100644
--- a/progs/xdemos/glxheads.c
+++ b/progs/xdemos/glxheads.c
@@ -145,14 +145,40 @@ AddHead(const char *displayName)
/* save the info for this head */
{
struct head *h = &Heads[NumHeads];
+ const char * tmp;
+
+ if (strlen(displayName) + 1 > sizeof(h->DisplayName)) {
+ Error(displayName, "displayName string length overflow");
+ return NULL;
+ }
strcpy(h->DisplayName, displayName);
+
h->Dpy = dpy;
h->Win = win;
h->Context = ctx;
h->Angle = 0.0;
- strcpy(h->Version, (char *) glGetString(GL_VERSION));
+
+ tmp = (char *) glGetString(GL_VERSION);
+ if (strlen(tmp) + 1 > sizeof(h->Version)) {
+ Error(displayName, "GL_VERSION string length overflow");
+ return NULL;
+ }
+ strcpy(h->Version, tmp);
+
+ tmp = (char *) glGetString(GL_VENDOR);
+ if (strlen(tmp) + 1 > sizeof(h->Vendor)) {
+ Error(displayName, "GL_VENDOR string length overflow");
+ return NULL;
+ }
strcpy(h->Vendor, (char *) glGetString(GL_VENDOR));
+
+ tmp = (char *) glGetString(GL_RENDERER);
+ if (strlen(tmp) + 1 > sizeof(h->Renderer)) {
+ Error(displayName, "GL_RENDERER string length overflow");
+ return NULL;
+ }
strcpy(h->Renderer, (char *) glGetString(GL_RENDERER));
+
NumHeads++;
return &Heads[NumHeads-1];
}
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