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(svn r11601) -Codechange: more strict break conditions for _userstring, assert when it overflows anyway (eg. code change without proper check change)

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smatz 2007-12-08 18:50:39 +00:00
parent bfda3c82f1
commit 189771541e
3 changed files with 16 additions and 2 deletions
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6
src/misc_gui.cpp
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@ -772,7 +772,7 @@ static void DrawStationCoverageText(const AcceptedCargo accepts,
b = InlineString(b, STR_000D_ACCEPTS);
for (CargoID i = 0; i < NUM_CARGO; i++) {
if (b >= lastof(_userstring) - 5) break;
if (b >= lastof(_userstring) - (1 + 2 * 4)) break; // ',' or ' ' and two calls to Utf8Encode()
switch (sct) {
case SCT_PASSENGERS_ONLY: if (!IsCargoInClass(i, CC_PASSENGERS)) continue; break;
case SCT_NON_PASSENGERS_ONLY: if (IsCargoInClass(i, CC_PASSENGERS)) continue; break;
@ -795,6 +795,10 @@ static void DrawStationCoverageText(const AcceptedCargo accepts,
if (first) b = InlineString(b, STR_00D0_NOTHING);
*b = '\0';
/* Make sure we detect any buffer overflow */
assert(b < endof(_userstring));
DrawStringMultiLine(str_x, str_y, STR_SPEC_USERSTRING, 144);
}

6
src/station_gui.cpp
View File

@ -807,7 +807,7 @@ static void DrawStationViewWindow(Window *w)
b = InlineString(b, STR_000C_ACCEPTS);
for (CargoID i = 0; i < NUM_CARGO; i++) {
if (b >= endof(_userstring) - 5 - 1) break;
if (b >= lastof(_userstring) - (1 + 2 * 4)) break; // ',' or ' ' and two calls to Utf8Encode()
if (HasBit(st->goods[i].acceptance_pickup, GoodsEntry::ACCEPTANCE)) {
if (first) {
first = false;
@ -824,6 +824,10 @@ static void DrawStationViewWindow(Window *w)
if (first) b = InlineString(b, STR_00D0_NOTHING);
*b = '\0';
/* Make sure we detect any buffer overflow */
assert(b < endof(_userstring));
DrawStringMultiLine(2, 67, STR_SPEC_USERSTRING, 245);
} else { // extended window with list of cargo ratings
DrawString(2, 67, STR_3034_LOCAL_RATING_OF_TRANSPORT, TC_FROMSTRING);

6
src/vehicle_gui.cpp
View File

@ -506,6 +506,8 @@ uint ShowRefitOptionsList(int x, int y, uint w, EngineID engine)
for (CargoID cid = 0; cid < NUM_CARGO; cid++) {
if (!HasBit(cmask, cid)) continue;
if (b >= lastof(_userstring) - (2 + 2 * 4)) break; // ", " and two calls to Utf8Encode()
if (!first) b = strecpy(b, ", ", lastof(_userstring));
first = false;
@ -515,6 +517,10 @@ uint ShowRefitOptionsList(int x, int y, uint w, EngineID engine)
/* Terminate and display the completed string */
*b = '\0';
/* Make sure we detect any buffer overflow */
assert(b < endof(_userstring));
return DrawStringMultiLine(x, y, STR_SPEC_USERSTRING, w);
}