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Fix memory corruption bugs in structure limits code. Reported by several. 

git-svn-id: svn+ssh://svn.gna.org/svn/warzone/trunk@3865 4a71c877-e1ca-e34f-864e-861f7616d084
master
Per Inge Mathisen 2008-02-24 15:31:50 +00:00
parent f92b8fc5b4
commit d0a0b225ef
1 changed files with 9 additions and 31 deletions
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40
src/multilimit.c
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@ -51,11 +51,6 @@
#include "lib/ivis_common/piemode.h"
#include "lib/script/script.h"
// ////////////////////////////////////////////////////////////////////////////
// externs
extern void intDisplayPlainForm (WIDGET *psWidget, UDWORD xOffset,
UDWORD yOffset, PIELIGHT *pColours);
// ////////////////////////////////////////////////////////////////////////////
// defines
#define IDLIMITS 22000
@ -76,6 +71,7 @@ extern void intDisplayPlainForm (WIDGET *psWidget, UDWORD xOffset,
#define BARWIDTH 480
#define BARHEIGHT 40
#define BUTPERFORM 8
// ////////////////////////////////////////////////////////////////////////////
// protos.
@ -85,7 +81,7 @@ static void displayStructureBar(WIDGET *psWidget, UDWORD xOffset, UDWORD yOffset
static BOOL useStruct(UDWORD count,UDWORD i)
{
// STRUCTURE_STATS *pStat = asStructureStats+i;
ASSERT(i < numStructureStats, "Bad structure for structure limit: %d", (int)i);
if(count >= (4*BUTPERFORM))
{
@ -144,20 +140,6 @@ BOOL startLimitScreen(void)
widgAddForm(psWScreen, &sFormInit);
// return button.
// addMultiBut(psWScreen,IDLIMITS,IDLIMITS_RETURN,
// 8,5,
// iV_GetImageWidth(FrontImages,IMAGE_RETURN),
// iV_GetImageHeight(FrontImages,IMAGE_RETURN),
// _("Return To Previous Screen"),IMAGE_RETURN,IMAGE_RETURN_HI,TRUE);
// ok button
// addMultiBut(psWScreen,IDLIMITS,IDLIMITS_OK,
// LIMITS_OKX,LIMITS_OKY,
// iV_GetImageWidth(FrontImages,IMAGE_BIGOK),
// iV_GetImageHeight(FrontImages,IMAGE_BIGOK),
// _("Accept Settings"),IMAGE_BIGOK,IMAGE_BIGOK,TRUE);
addMultiBut(psWScreen,IDLIMITS,IDLIMITS_RETURN,
LIMITS_OKX-40,LIMITS_OKY,
iV_GetImageWidth(FrontImages,IMAGE_RETURN),
@ -172,8 +154,6 @@ BOOL startLimitScreen(void)
iV_GetImageHeight(FrontImages,IMAGE_BIGOK),
_("Accept Settings"),IMAGE_OK,IMAGE_OK,TRUE);
// Count the number of minor tabs needed
numButtons = 0;
@ -240,7 +220,6 @@ BOOL startLimitScreen(void)
asStructLimits[0][i].limit, 0);
sButInit.id ++;
if (sButInit.y + BARHEIGHT + 2 > (BUTPERFORM*(BARHEIGHT+2) - 4) )
{
sButInit.y = 5;
@ -283,14 +262,11 @@ void runLimitScreen(void)
case IDLIMITS_RETURN:
// reset the sliders..
eventReset();
// resReleaseBlockData(500);
resReleaseBlockData(501);
resReleaseBlockData(502);
// eventReset();
bForceEditorLoaded = FALSE;
changeTitleMode(MULTIOPTION);
// make some noize.
if(!ingame.localOptionsReceived)
{
@ -301,7 +277,6 @@ void runLimitScreen(void)
sendTextMessage("Limits Reset To Default Values",TRUE);
}
break;
case IDLIMITS_OK:
createLimitSet();
@ -318,7 +293,7 @@ void runLimitScreen(void)
// ////////////////////////////////////////////////////////////////////////////
void createLimitSet(void)
{
UDWORD i, numchanges = 0;
UDWORD i, numchanges = 0, bufSize;
MULTISTRUCTLIMITS *pEntry;
// Free the old set if required
@ -340,9 +315,12 @@ void createLimitSet(void)
}
// Allocate some memory for the changes
pEntry = malloc(numchanges * sizeof(MULTISTRUCTLIMITS));
bufSize = numStructureStats * sizeof(MULTISTRUCTLIMITS);
pEntry = malloc(bufSize);
memset(pEntry, 255, bufSize);
// Prepare chunk
ASSERT(numStructureStats < UBYTE_MAX, "Too many structure stats");
for (i = 0; i < numStructureStats; i++)
{
if (asStructLimits[0][i].limit != LOTS_OF)
@ -355,7 +333,7 @@ void createLimitSet(void)
ingame.numStructureLimits = numchanges;
ingame.pStructureLimits = pEntry;
sendOptions(0,0);
sendOptions(0, 0);
}
// ////////////////////////////////////////////////////////////////////////////
@ -372,7 +350,7 @@ void applyLimitSet(void)
// Get the limits and decode
for (i = 0; i < ingame.numStructureLimits; i++)
{
unsigned int id = pEntry[i].id;
UBYTE id = pEntry[i].id;
// So long as the ID is valid
if (id < numStructureStats)