return Error::success();
}
+static Error checkEncryptCommand(const MachOObjectFile *Obj,
+ const MachOObjectFile::LoadCommandInfo &Load,
+ uint32_t LoadCommandIndex,
+ uint64_t cryptoff, uint64_t cryptsize,
+ const char **LoadCmd, const char *CmdName) {
+ if (*LoadCmd != nullptr)
+ return malformedError("more than one LC_ENCRYPTION_INFO and or "
+ "LC_ENCRYPTION_INFO_64 command");
+ uint64_t FileSize = Obj->getData().size();
+ if (cryptoff > FileSize)
+ return malformedError("cryptoff field of " + Twine(CmdName) +
+ " command " + Twine(LoadCommandIndex) + " extends "
+ "past the end of the file");
+ uint64_t BigSize = cryptoff;
+ BigSize += cryptsize;
+ if (BigSize > FileSize)
+ return malformedError("cryptoff field plus cryptsize field of " +
+ Twine(CmdName) + " command " +
+ Twine(LoadCommandIndex) + " extends past the end of "
+ "the file");
+ *LoadCmd = Load.Ptr;
+ return Error::success();
+}
+
Expected<std::unique_ptr<MachOObjectFile>>
MachOObjectFile::create(MemoryBufferRef Object, bool IsLittleEndian,
bool Is64Bits) {
const char *VersLoadCmd = nullptr;
const char *SourceLoadCmd = nullptr;
const char *EntryPointLoadCmd = nullptr;
+ const char *EncryptLoadCmd = nullptr;
for (unsigned I = 0; I < LoadCommandCount; ++I) {
if (is64Bit()) {
if (Load.C.cmdsize % 8 != 0) {
return;
}
EntryPointLoadCmd = Load.Ptr;
+ } else if (Load.C.cmd == MachO::LC_ENCRYPTION_INFO) {
+ if (Load.C.cmdsize != sizeof(MachO::encryption_info_command)) {
+ Err = malformedError("LC_ENCRYPTION_INFO command " + Twine(I) +
+ " has incorrect cmdsize");
+ return;
+ }
+ MachO::encryption_info_command E =
+ getStruct<MachO::encryption_info_command>(this, Load.Ptr);
+ if ((Err = checkEncryptCommand(this, Load, I, E.cryptoff, E.cryptsize,
+ &EncryptLoadCmd, "LC_ENCRYPTION_INFO")))
+ return;
+ } else if (Load.C.cmd == MachO::LC_ENCRYPTION_INFO_64) {
+ if (Load.C.cmdsize != sizeof(MachO::encryption_info_command_64)) {
+ Err = malformedError("LC_ENCRYPTION_INFO_64 command " + Twine(I) +
+ " has incorrect cmdsize");
+ return;
+ }
+ MachO::encryption_info_command_64 E =
+ getStruct<MachO::encryption_info_command_64>(this, Load.Ptr);
+ if ((Err = checkEncryptCommand(this, Load, I, E.cryptoff, E.cryptsize,
+ &EncryptLoadCmd, "LC_ENCRYPTION_INFO_64")))
+ return;
}
if (I < LoadCommandCount - 1) {
if (auto LoadOrErr = getNextLoadCommandInfo(this, I, Load))
RUN: not llvm-objdump -macho -private-headers %p/Inputs/macho-invalid-entry-more-than-one 2>&1 | FileCheck -check-prefix INVALID-ENTRY-MORE-THAN-ONE %s
INVALID-ENTRY-MORE-THAN-ONE: macho-invalid-entry-more-than-one': truncated or malformed object (more than one LC_MAIN command)
+
+RUN: not llvm-objdump -macho -private-headers %p/Inputs/macho-invalid-encrypt-bad-size 2>&1 | FileCheck -check-prefix INVALID-ENCRYPT-BAD-SIZE %s
+INVALID-ENCRYPT-BAD-SIZE: macho-invalid-encrypt-bad-size': truncated or malformed object (LC_ENCRYPTION_INFO command 0 has incorrect cmdsize)
+
+RUN: not llvm-objdump -macho -private-headers %p/Inputs/macho-invalid-encrypt64-bad-size 2>&1 | FileCheck -check-prefix INVALID-ENCRYPT64-BAD-SIZE %s
+INVALID-ENCRYPT64-BAD-SIZE: macho-invalid-encrypt64-bad-size': truncated or malformed object (LC_ENCRYPTION_INFO_64 command 0 has incorrect cmdsize)
+
+RUN: not llvm-objdump -macho -private-headers %p/Inputs/macho-invalid-encrypt-more-than-one 2>&1 | FileCheck -check-prefix INVALID-ENCRYPT-MORE-THAN-ONE %s
+INVALID-ENCRYPT-MORE-THAN-ONE: macho-invalid-encrypt-more-than-one': truncated or malformed object (more than one LC_ENCRYPTION_INFO and or LC_ENCRYPTION_INFO_64 command)
+
+RUN: not llvm-objdump -macho -private-headers %p/Inputs/macho-invalid-encrypt-cryptoff 2>&1 | FileCheck -check-prefix INVALID-ENCRYPT-CRYPTOFF %s
+INVALID-ENCRYPT-CRYPTOFF: macho-invalid-encrypt-cryptoff': truncated or malformed object (cryptoff field of LC_ENCRYPTION_INFO command 0 extends past the end of the file)
+
+RUN: not llvm-objdump -macho -private-headers %p/Inputs/macho-invalid-encrypt64-cryptoff-cryptsize 2>&1 | FileCheck -check-prefix INVALID-ENCRYPT-CRYPTOFF-CRYPTSIZE %s
+INVALID-ENCRYPT-CRYPTOFF-CRYPTSIZE: macho-invalid-encrypt64-cryptoff-cryptsize': truncated or malformed object (cryptoff field plus cryptsize field of LC_ENCRYPTION_INFO_64 command 0 extends past the end of the file)