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Next set of additional error checks for invalid Mach-O files for bad LC_UUID

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load commands.  Added a missing check and made the check for more than
one like other other “more than one” checks.  And of course added test cases.

llvm-svn: 282104
This commit is contained in:
Kevin Enderby 2016-09-21 20:03:09 +00:00
parent f9ec13f3d1
commit 05fa86d006
4 changed files with 12 additions and 2 deletions
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8
lib/Object/MachOObjectFile.cpp
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@ -717,9 +717,13 @@ MachOObjectFile::MachOObjectFile(MemoryBufferRef Object, bool IsLittleEndian,
"LC_DYLD_INFO_ONLY")))
return;
} else if (Load.C.cmd == MachO::LC_UUID) {
// Multiple UUID load commands
if (Load.C.cmdsize != sizeof(MachO::uuid_command)) {
Err = malformedError("LC_UUID command " + Twine(I) + " has incorrect "
"cmdsize");
return;
}
if (UuidLoadCmd) {
Err = malformedError("Multiple UUID load commands");
Err = malformedError("more than one LC_UUID command");
return;
}
UuidLoadCmd = Load.Ptr;

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test/Object/Inputs/macho-invalid-uuid-bad-size Normal file
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test/Object/Inputs/macho-invalid-uuid-more-than-one Normal file
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6
test/Object/macho-invalid.test
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@ -283,3 +283,9 @@ INVALID-DYLIB-WRONG-FILETYPE: macho-invalid-dylib-wrong-filetype': truncated or
RUN: not llvm-objdump -macho -private-headers %p/Inputs/macho-invalid-dylib-no-id 2>&1 | FileCheck -check-prefix INVALID-DYLIB-NO-ID %s
INVALID-DYLIB-NO-ID: macho-invalid-dylib-no-id': truncated or malformed object (no LC_ID_DYLIB load command in dynamic library filetype)
RUN: not llvm-objdump -macho -private-headers %p/Inputs/macho-invalid-uuid-more-than-one 2>&1 | FileCheck -check-prefix INVALID-UUID-MORE-THAN-ONE %s
INVALID-UUID-MORE-THAN-ONE: macho-invalid-uuid-more-than-one': truncated or malformed object (more than one LC_UUID command)
RUN: not llvm-objdump -macho -private-headers %p/Inputs/macho-invalid-uuid-bad-size 2>&1 | FileCheck -check-prefix INVALID-UUID-BAD-SIZE %s
INVALID-UUID-BAD-SIZE: macho-invalid-uuid-bad-size': truncated or malformed object (LC_UUID command 0 has incorrect cmdsize)