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heif: fix -Wstringop-overread warning

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This commit is contained in:
Daniel Novomeský 2025-01-08 16:45:57 +01:00
parent bb10c4bd5c
commit bda8487147
1 changed files with 12 additions and 16 deletions
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28
src/imageformats/heif.cpp
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@ -345,31 +345,31 @@ bool HEIFHandler::isSupportedBMFFType(const QByteArray &header)
} }
const char *buffer = header.constData(); const char *buffer = header.constData();
if (qstrncmp(buffer + 4, "ftyp", 4) == 0) { if (memcmp(buffer + 4, "ftyp", 4) == 0) {
if (qstrncmp(buffer + 8, "heic", 4) == 0) { if (memcmp(buffer + 8, "heic", 4) == 0) {
return true; return true;
} }
if (qstrncmp(buffer + 8, "heis", 4) == 0) { if (memcmp(buffer + 8, "heis", 4) == 0) {
return true; return true;
} }
if (qstrncmp(buffer + 8, "heix", 4) == 0) { if (memcmp(buffer + 8, "heix", 4) == 0) {
return true; return true;
} }
/* we want to avoid loading AVIF files via this plugin */ /* we want to avoid loading AVIF files via this plugin */
if (qstrncmp(buffer + 8, "mif1", 4) == 0) { if (memcmp(buffer + 8, "mif1", 4) == 0) {
for (int offset = 16; offset <= 24; offset += 4) { for (int offset = 16; offset <= 24; offset += 4) {
if (qstrncmp(buffer + offset, "avif", 4) == 0) { if (memcmp(buffer + offset, "avif", 4) == 0) {
return false; return false;
} }
} }
return true; return true;
} }
if (qstrncmp(buffer + 8, "mif2", 4) == 0) { if (memcmp(buffer + 8, "mif2", 4) == 0) {
return true; return true;
} }
if (qstrncmp(buffer + 8, "msf1", 4) == 0) { if (memcmp(buffer + 8, "msf1", 4) == 0) {
return true; return true;
} }
} }
@ -384,10 +384,8 @@ bool HEIFHandler::isSupportedHEJ2(const QByteArray &header)
} }
const char *buffer = header.constData(); const char *buffer = header.constData();
if (qstrncmp(buffer + 4, "ftyp", 4) == 0) { if (memcmp(buffer + 4, "ftypj2ki", 8) == 0) {
if (qstrncmp(buffer + 8, "j2ki", 4) == 0) { return true;
return true;
}
} }
return false; return false;
@ -400,10 +398,8 @@ bool HEIFHandler::isSupportedAVCI(const QByteArray &header)
} }
const char *buffer = header.constData(); const char *buffer = header.constData();
if (qstrncmp(buffer + 4, "ftyp", 4) == 0) { if (memcmp(buffer + 4, "ftypavci", 8) == 0) {
if (qstrncmp(buffer + 8, "avci", 4) == 0) { return true;
return true;
}
} }
return false; return false;