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S3M/IT/XM import: hardening

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tildearrow 2024-07-01 05:44:28 -05:00
parent 6b2c010afa
commit 6449bc9af2
3 changed files with 32 additions and 10 deletions
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13
src/engine/fileOps/it.cpp
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@ -547,7 +547,7 @@ bool DivEngine::loadIT(unsigned char* file, size_t len) {
reader.read(magic,4);
if (memcmp(magic,"IMPS",4)!=0) {
logE("invalid sample header!");
logW("invalid sample header!");
lastError="invalid sample header";
delete s;
delete[] file;
@ -575,7 +575,16 @@ bool DivEngine::loadIT(unsigned char* file, size_t len) {
s->depth=DIV_SAMPLE_DEPTH_8BIT;
}
s->init((unsigned int)reader.readI());
unsigned int sampleLen=reader.readI();
if (sampleLen>16777216) {
logE("abnormal sample size! %x",reader.tell());
lastError="bad sample size";
delete[] file;
return false;
}
s->init(sampleLen);
s->loopStart=reader.readI();
s->loopEnd=reader.readI();
s->centerRate=reader.readI()/2;