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Enforce string-length requirement.

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This commit is contained in:
Thomas Harte 2021-12-26 09:12:44 -05:00
parent 0433db0370
commit 28572d4392
1 changed files with 10 additions and 3 deletions
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13
Storage/Disk/DiskImage/Formats/IPF.cpp
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@ -12,9 +12,13 @@ using namespace Storage::Disk;
namespace {
constexpr uint32_t block(const char *src) {
static_assert(sizeof(int) >= sizeof(uint32_t));
return uint32_t((src[0] << 24) | (src[1] << 16) | (src[2] << 8) | src[3]);
constexpr uint32_t block(const char (& src)[5]) {
return uint32_t(
(uint32_t(src[0]) << 24) |
(uint32_t(src[1]) << 16) |
(uint32_t(src[2]) << 8) |
uint32_t(src[3])
);
}
}
@ -92,6 +96,9 @@ IPF::IPF(const std::string &file_name) : file_(file_name) {
// Ignore: disk number, creator ID, reserved area.
} break;
case block("IMGE"):
break;
case block("DATA"): {
length += file_.get32be();
printf("Handling DATA block at %ld of length %d\n", start_of_block, length);