testing the read-only permission of Pkg.add

[matthijscox-asml]

To make sure we never again miss something like https://github.com/ASML-Labs/PPTX.jl/issues/45

[codecov[bot]]

Codecov Report

Merging #47 (d4f9257) into main (1f1adda) will not change coverage. Report is 1 commits behind head on main. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main      #47   +/-   ##
=======================================
  Coverage   94.62%   94.62%           
=======================================
  Files          10       10           
  Lines         521      521           
=======================================
  Hits          493      493           
  Misses         28       28           

Files Changed	Coverage Δ
src/write.jl	87.70% <100.00%> (ø)

[matthijscox-asml]

Hmm, I cannot set chmod(edited_template_path, 0o444; recursive=true) on ubuntu in the test?

IOError: stat("/tmp/jl_MFdsV3/no-slides/[Content_Types].xml"): permission denied (EACCES)

[jaakkor2]

If chmod("/tmp/jl_MFdsV3/no-slides", 0o444, recursive=true) sets the directory first to be read-only, then stat("/tmp/jl_MFdsV3/no-slides/[Content_Types].xml") fails.

mkdir foo
touch > foo/bar
chmod u-x foo
stat foo/bar

gives me stat: cannot stat ‘foo/bar’: Permission denied. The directory needs to have execute bit in order to files be accessed.

One could set chmod(unzipped_dir, 0o770, recursive=true) to make sure files are writable and directories are executable in case the template was copied to the temp directory from files inside the PPTX-package (or some other directory without write bits.

Or maybe a bit better not to put execute bit on the files

for (root, dirs, files) in walkdir(unzipped_dir)
    for dir in dirs
        chmod(dir, 0x770)
    end
    for file in files
        chmod(file, 0o660)
    end
end

Addendum: On PPTX 0.6.5 that did not set the permissions on [Content_Types].xml

using PPTX
pres = Presentation()
write("foo.pptx", pres, template_path=joinpath(PPTX.TEMPLATE_DIR, "no-slides.pptx")) # works
write("foo.pptx", pres, template_path=joinpath(PPTX.TEMPLATE_DIR, "no-slides"))       # fails