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harden the file loader

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This commit is contained in:
tildearrow 2026-01-15 14:04:26 -05:00
parent 5e78a48921
commit 5e715f21ba
1 changed files with 27 additions and 0 deletions
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27
src/engine/song.cpp
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@ -476,6 +476,15 @@ bool DivSubSong::readData(SafeReader& reader, int version, int chans) {
patLen=reader.readS();
ordersLen=reader.readS();
if (patLen<1 || patLen>DIV_MAX_ROWS) {
logE("invalid pattern length!");
return false;
}
if (ordersLen<1 || ordersLen>256) {
logE("invalid orders count!");
return false;
}
hilightA=reader.readC();
hilightB=reader.readC();
@ -503,6 +512,10 @@ bool DivSubSong::readData(SafeReader& reader, int version, int chans) {
for (int i=0; i<chans; i++) {
pat[i].effectCols=reader.readC();
if (pat[i].effectCols<1 || pat[i].effectCols>8) {
logE("invalid effect column count!");
return false;
}
}
for (int i=0; i<chans; i++) {
@ -543,6 +556,15 @@ bool DivSubSong::readData(SafeReader& reader, int version, int chans) {
patLen=reader.readS();
ordersLen=reader.readS();
if (patLen<1 || patLen>DIV_MAX_ROWS) {
logE("invalid pattern length!");
return false;
}
if (ordersLen<1 || ordersLen>256) {
logE("invalid orders count!");
return false;
}
hilightA=reader.readC();
hilightB=reader.readC();
@ -568,6 +590,11 @@ bool DivSubSong::readData(SafeReader& reader, int version, int chans) {
for (int i=0; i<chans; i++) {
pat[i].effectCols=reader.readC();
if (pat[i].effectCols<1 || pat[i].effectCols>8) {
logE("invalid effect column count!");
return false;
}
}
for (int i=0; i<chans; i++) {