Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #2502 from blender/fix/issue-2500
Use `objdump` to determine whether a binary blob from a compressed archive should be handled by Carthage.
- Loading branch information
Showing
8 changed files
with
313 additions
and
37 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| import Foundation | ||
| import MachO.loader | ||
| import ReactiveTask | ||
| import ReactiveSwift | ||
| import Result | ||
|
|
||
| /// Represents a Mach header | ||
| /// | ||
| /// Provides a unified structure for | ||
| /// `MachO.loader.mach_header` and `MachO.loader.mach_header_64` | ||
|
|
||
| struct MachHeader { | ||
|
|
||
| enum Endianness { | ||
| case little | ||
| case big | ||
| } | ||
|
|
||
| let magic: UInt32 | ||
| let cpuType: cpu_type_t | ||
| let cpuSubtype: cpu_type_t | ||
| let fileType: UInt32 | ||
| let ncmds: UInt32 | ||
| let sizeofcmds: UInt32 | ||
| let flags: UInt32 | ||
| let reserved: UInt32? | ||
|
|
||
| var is64BitHeader: Bool { | ||
|
|
||
| return magic == MH_MAGIC_64 || magic == MH_CIGAM_64 | ||
| } | ||
|
|
||
| var is32BitHeader: Bool { | ||
|
|
||
| return !is64BitHeader | ||
| } | ||
|
|
||
| var endianess: Endianness { | ||
|
|
||
| return magic == MH_CIGAM_64 || magic == MH_CIGAM ? .big : .little | ||
| } | ||
| } | ||
|
|
||
| extension MachHeader { | ||
|
|
||
| static let carthageSupportedFileTypes: Set<UInt32> = { | ||
| return Set([ | ||
| MH_OBJECT, // Carthage accepts static libraries | ||
| MH_BUNDLE, // Bundles https://github.com/ResearchKit/ResearchKit/blob/1.3.0/ResearchKit/Info.plist#L15-L16 | ||
| MH_DYLIB, // or dynamic shared libraries | ||
| ].map { UInt32($0) } | ||
| ) | ||
| }() | ||
| } | ||
|
|
||
| extension MachHeader { | ||
|
|
||
| /// Reads the Mach headers from a Mach-O file. | ||
| /// - Parameter url: The url of the Mach-O file | ||
| /// - Remark: Uses `objdump` to read the header and parse the output. | ||
| /// The output is composed of one or more sets of lines like the following: | ||
| /// | ||
| /// Mach header | ||
| /// magic cputype cpusubtype caps filetype ncmds sizeofcmds flags | ||
| /// 0xfeedfacf 16777223 3 0x00 1 8 1720 0x00002000 | ||
| /// | ||
| /// - See Also: [LLVM MachODump.cpp](https://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-objdump/MachODump.cpp?view=markup&pathrev=225383###see%C2%B7line%C2%B72745) | ||
|
|
||
| static func headers(forMachOFileAtUrl url: URL) -> SignalProducer<MachHeader, CarthageError> { | ||
|
|
||
| // This is the command `otool -h` actually invokes | ||
| let task = Task("/usr/bin/xcrun", arguments: [ | ||
| "objdump", | ||
| "-macho", | ||
| "-private-header", | ||
| "-non-verbose", | ||
| url.resolvingSymlinksInPath().path | ||
| ] | ||
| ) | ||
|
|
||
| return task.launch(standardInput: nil) | ||
| .ignoreTaskData() | ||
| .map { String(data: $0, encoding: .utf8) ?? "" } | ||
| .filter { !$0.isEmpty } | ||
| .flatMap(.merge) { (output: String) -> SignalProducer<(String, String), NoError> in | ||
| output.linesProducer.combinePrevious() | ||
| }.filterMap { (previousLine, currentLine) -> MachHeader? in | ||
|
|
||
| let previousLineComponents = previousLine | ||
| .components(separatedBy: CharacterSet.whitespaces) | ||
| .filter { !$0.isEmpty } | ||
| let currentLineComponents = currentLine | ||
| .components(separatedBy: CharacterSet.whitespaces) | ||
| .filter { !$0.isEmpty } | ||
|
|
||
| let strippedComponents = currentLineComponents | ||
| .map { $0.stripping(prefix: "0x")} | ||
|
|
||
| let magicIdentifiers = [ | ||
| MH_MAGIC_64, | ||
| MH_CIGAM_64, | ||
| MH_MAGIC, | ||
| MH_CIGAM, | ||
| ].lazy | ||
|
|
||
| guard previousLineComponents == [ | ||
| "magic", | ||
| "cputype", | ||
| "cpusubtype", | ||
| "caps", | ||
| "filetype", | ||
| "ncmds", | ||
| "sizeofcmds", | ||
| "flags" | ||
| ] | ||
| , !strippedComponents.isEmpty | ||
| , let magic = UInt32(strippedComponents.first!, radix:16) | ||
| , magicIdentifiers.first(where: { $0 == magic }) != nil else { | ||
| return nil | ||
| } | ||
|
|
||
| guard | ||
| let cpuType = cpu_type_t(strippedComponents[1], radix: 10), | ||
| let cpuSubtype = cpu_subtype_t(strippedComponents[2], radix: 10), | ||
| let fileType = UInt32(strippedComponents[4], radix: 10), | ||
| let ncmds = UInt32(strippedComponents[5], radix: 10), | ||
| let sizeofcmds = UInt32(strippedComponents[6], radix: 10), | ||
| let flags = UInt32(strippedComponents[7], radix: 16) | ||
| else { | ||
| return nil | ||
| } | ||
|
|
||
| return MachHeader( | ||
| magic: magic, | ||
| cpuType: cpuType, | ||
| cpuSubtype: cpuSubtype, | ||
| fileType: fileType, | ||
| ncmds: ncmds, | ||
| sizeofcmds: sizeofcmds, | ||
| flags: flags, | ||
| reserved: nil | ||
| ) | ||
| } | ||
| .mapError(CarthageError.taskError) | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.