chore: embed Info.plist in dylib

[ethanndickson]

Relates to coder/coder-desktop-macos#2

This embeds:

• "CoderVPN" as CFBundleName
• The build version, e.g. 2.18.1-devel+1317c3043 as CFBundleVersion
• The semantic version, e.g. 2.18.1 as CFBundleShortVersionString
• The bundle identifier, com.coder.Coder-Desktop.VPN.dylib as CFBundleIdentifier.

into the __TEXT __info_plist section of the Coder VPN .dylib. This allows the Desktop app to read the version of the dylib after it's been downloaded.

There exists a Swift API for reading this section: https://developer.apple.com/documentation/corefoundation/1537134-cfbundlecopyinfodictionaryforurl

... This function will attempt to read an information dictionary from the (__TEXT, __info_plist) section of the file

$ codesign -dvvvv ./coder-vpn_2.18.1-devel+a8155f75a_darwin_arm64.dylib
Identifier=com.coder.Coder-Desktop.VPN.dylib
[...]
Info.plist entries=4

$ codesign -dvvvv ./coder-vpn_2.18.1-devel+a8155f75a_darwin_amd64.dylib
Identifier=com.coder.Coder-Desktop.VPN.dylib
[...]
Info.plist entries=4

$ otool -X -s __TEXT __info_plist ./coder-vpn_2.18.1-devel+a8155f75a_darwin_amd64.dylib | xxd -r
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CFBundleName</key>
    <string>CoderVPN</string>
    <key>CFBundleIdentifier</key>
    <string>com.coder.Coder-Desktop.VPN.dylib</string>
    <key>CFBundleVersion</key>
    <string>2.18.1-devel+a8155f75a</string>
    <key>CFBundleShortVersionString</key>
    <string>2.18.1</string>
</dict>
</plist>

Note:
I initially tried to see if Info.plist could be embedded within the signature using rcodesign. It lets you supply an Info.plist but it would appear to only add the hash of the file to the signature, see example.
Inspecting the signature with codesign would return Info.plist=not bound.

[ethanndickson]

• chore: embed Info.plist in dylib #15907 👈 (View in Graphite)
• main

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