[iortcw] 128/152: All: Avoid undefined pointer below array bounds in snd_wavelet.c / Avoid array underflow in UI_BuildFindPlayerList From smcv
Simon McVittie
smcv at debian.org
Fri Sep 8 10:40:23 UTC 2017
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smcv pushed a commit to annotated tag 1.5a
in repository iortcw.
commit eec1be2868624761027ef911de5af4ef9a845a2e
Author: MAN-AT-ARMS <M4N4T4RMS at gmail.com>
Date: Tue Oct 4 13:36:30 2016 -0400
All: Avoid undefined pointer below array bounds in snd_wavelet.c / Avoid array underflow in UI_BuildFindPlayerList
From smcv
---
MP/code/client/snd_wavelet.c | 21 +++++++++++----------
MP/code/ui/ui_main.c | 8 ++++----
SP/code/client/snd_wavelet.c | 21 +++++++++++----------
SP/code/ui/ui_main.c | 8 ++++----
4 files changed, 30 insertions(+), 28 deletions(-)
diff --git a/MP/code/client/snd_wavelet.c b/MP/code/client/snd_wavelet.c
index 71da208..bc142ec 100644
--- a/MP/code/client/snd_wavelet.c
+++ b/MP/code/client/snd_wavelet.c
@@ -30,7 +30,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
void daub4(float b[], unsigned long n, int isign)
{
float wksp[4097] = { 0.0f };
- float *a=b-1; // numerical recipies so a[1] = b[0]
+#define a(x) b[(x)-1] // numerical recipies so a[1] = b[0]
unsigned long nh,nh1,i,j;
@@ -39,22 +39,23 @@ void daub4(float b[], unsigned long n, int isign)
nh1=(nh=n >> 1)+1;
if (isign >= 0) {
for (i=1,j=1;j<=n-3;j+=2,i++) {
- wksp[i] = C0*a[j]+C1*a[j+1]+C2*a[j+2]+C3*a[j+3];
- wksp[i+nh] = C3*a[j]-C2*a[j+1]+C1*a[j+2]-C0*a[j+3];
+ wksp[i] = C0*a(j)+C1*a(j+1)+C2*a(j+2)+C3*a(j+3);
+ wksp[i+nh] = C3*a(j)-C2*a(j+1)+C1*a(j+2)-C0*a(j+3);
}
- wksp[i ] = C0*a[n-1]+C1*a[n]+C2*a[1]+C3*a[2];
- wksp[i+nh] = C3*a[n-1]-C2*a[n]+C1*a[1]-C0*a[2];
+ wksp[i ] = C0*a(n-1)+C1*a(n)+C2*a(1)+C3*a(2);
+ wksp[i+nh] = C3*a(n-1)-C2*a(n)+C1*a(1)-C0*a(2);
} else {
- wksp[1] = C2*a[nh]+C1*a[n]+C0*a[1]+C3*a[nh1];
- wksp[2] = C3*a[nh]-C0*a[n]+C1*a[1]-C2*a[nh1];
+ wksp[1] = C2*a(nh)+C1*a(n)+C0*a(1)+C3*a(nh1);
+ wksp[2] = C3*a(nh)-C0*a(n)+C1*a(1)-C2*a(nh1);
for (i=1,j=3;i<nh;i++) {
- wksp[j++] = C2*a[i]+C1*a[i+nh]+C0*a[i+1]+C3*a[i+nh1];
- wksp[j++] = C3*a[i]-C0*a[i+nh]+C1*a[i+1]-C2*a[i+nh1];
+ wksp[j++] = C2*a(i)+C1*a(i+nh)+C0*a(i+1)+C3*a(i+nh1);
+ wksp[j++] = C3*a(i)-C0*a(i+nh)+C1*a(i+1)-C2*a(i+nh1);
}
}
for (i=1;i<=n;i++) {
- a[i]=wksp[i];
+ a(i)=wksp[i];
}
+#undef a
}
void wt1(float a[], unsigned long n, int isign)
diff --git a/MP/code/ui/ui_main.c b/MP/code/ui/ui_main.c
index 724c25e..e5f30d3 100644
--- a/MP/code/ui/ui_main.c
+++ b/MP/code/ui/ui_main.c
@@ -5831,11 +5831,11 @@ static void UI_BuildFindPlayerList( qboolean force ) {
} else {
// add a line that shows the number of servers found
if ( !uiInfo.numFoundPlayerServers ) {
- Com_sprintf( uiInfo.foundPlayerServerNames[uiInfo.numFoundPlayerServers - 1], sizeof( uiInfo.foundPlayerServerAddresses[0] ), "no servers found" );
+ Com_sprintf( uiInfo.foundPlayerServerNames[0], sizeof( uiInfo.foundPlayerServerNames[0] ), "no servers found" );
} else {
- Com_sprintf( uiInfo.foundPlayerServerNames[uiInfo.numFoundPlayerServers - 1], sizeof( uiInfo.foundPlayerServerAddresses[0] ),
- "%d server%s found with player %s", uiInfo.numFoundPlayerServers - 1,
- uiInfo.numFoundPlayerServers == 2 ? "" : "s", uiInfo.findPlayerName );
+ Com_sprintf( uiInfo.foundPlayerServerNames[uiInfo.numFoundPlayerServers-1], sizeof( uiInfo.foundPlayerServerNames[0] ),
+ "%d server%s found with player %s", uiInfo.numFoundPlayerServers - 1,
+ uiInfo.numFoundPlayerServers == 2 ? "" : "s", uiInfo.findPlayerName );
}
uiInfo.nextFindPlayerRefresh = 0;
// show the server status info for the selected server
diff --git a/SP/code/client/snd_wavelet.c b/SP/code/client/snd_wavelet.c
index 71da208..bc142ec 100644
--- a/SP/code/client/snd_wavelet.c
+++ b/SP/code/client/snd_wavelet.c
@@ -30,7 +30,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
void daub4(float b[], unsigned long n, int isign)
{
float wksp[4097] = { 0.0f };
- float *a=b-1; // numerical recipies so a[1] = b[0]
+#define a(x) b[(x)-1] // numerical recipies so a[1] = b[0]
unsigned long nh,nh1,i,j;
@@ -39,22 +39,23 @@ void daub4(float b[], unsigned long n, int isign)
nh1=(nh=n >> 1)+1;
if (isign >= 0) {
for (i=1,j=1;j<=n-3;j+=2,i++) {
- wksp[i] = C0*a[j]+C1*a[j+1]+C2*a[j+2]+C3*a[j+3];
- wksp[i+nh] = C3*a[j]-C2*a[j+1]+C1*a[j+2]-C0*a[j+3];
+ wksp[i] = C0*a(j)+C1*a(j+1)+C2*a(j+2)+C3*a(j+3);
+ wksp[i+nh] = C3*a(j)-C2*a(j+1)+C1*a(j+2)-C0*a(j+3);
}
- wksp[i ] = C0*a[n-1]+C1*a[n]+C2*a[1]+C3*a[2];
- wksp[i+nh] = C3*a[n-1]-C2*a[n]+C1*a[1]-C0*a[2];
+ wksp[i ] = C0*a(n-1)+C1*a(n)+C2*a(1)+C3*a(2);
+ wksp[i+nh] = C3*a(n-1)-C2*a(n)+C1*a(1)-C0*a(2);
} else {
- wksp[1] = C2*a[nh]+C1*a[n]+C0*a[1]+C3*a[nh1];
- wksp[2] = C3*a[nh]-C0*a[n]+C1*a[1]-C2*a[nh1];
+ wksp[1] = C2*a(nh)+C1*a(n)+C0*a(1)+C3*a(nh1);
+ wksp[2] = C3*a(nh)-C0*a(n)+C1*a(1)-C2*a(nh1);
for (i=1,j=3;i<nh;i++) {
- wksp[j++] = C2*a[i]+C1*a[i+nh]+C0*a[i+1]+C3*a[i+nh1];
- wksp[j++] = C3*a[i]-C0*a[i+nh]+C1*a[i+1]-C2*a[i+nh1];
+ wksp[j++] = C2*a(i)+C1*a(i+nh)+C0*a(i+1)+C3*a(i+nh1);
+ wksp[j++] = C3*a(i)-C0*a(i+nh)+C1*a(i+1)-C2*a(i+nh1);
}
}
for (i=1;i<=n;i++) {
- a[i]=wksp[i];
+ a(i)=wksp[i];
}
+#undef a
}
void wt1(float a[], unsigned long n, int isign)
diff --git a/SP/code/ui/ui_main.c b/SP/code/ui/ui_main.c
index 20ef0be..29fab69 100644
--- a/SP/code/ui/ui_main.c
+++ b/SP/code/ui/ui_main.c
@@ -5657,11 +5657,11 @@ static void UI_BuildFindPlayerList( qboolean force ) {
} else {
// add a line that shows the number of servers found
if ( !uiInfo.numFoundPlayerServers ) {
- Com_sprintf( uiInfo.foundPlayerServerNames[uiInfo.numFoundPlayerServers - 1], sizeof( uiInfo.foundPlayerServerAddresses[0] ), "no servers found" );
+ Com_sprintf( uiInfo.foundPlayerServerNames[0], sizeof( uiInfo.foundPlayerServerNames[0] ), "no servers found" );
} else {
- Com_sprintf( uiInfo.foundPlayerServerNames[uiInfo.numFoundPlayerServers - 1], sizeof( uiInfo.foundPlayerServerAddresses[0] ),
- "%d server%s found with player %s", uiInfo.numFoundPlayerServers - 1,
- uiInfo.numFoundPlayerServers == 2 ? "" : "s", uiInfo.findPlayerName );
+ Com_sprintf( uiInfo.foundPlayerServerNames[uiInfo.numFoundPlayerServers-1], sizeof( uiInfo.foundPlayerServerNames[0] ),
+ "%d server%s found with player %s", uiInfo.numFoundPlayerServers - 1,
+ uiInfo.numFoundPlayerServers == 2 ? "" : "s", uiInfo.findPlayerName );
}
uiInfo.nextFindPlayerRefresh = 0;
// show the server status info for the selected server
--
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